annotate src/eval.c @ 2297:13a418960a88

[xemacs-hg @ 2004-09-22 02:05:42 by stephent] various doc patches <87isa7awrh.fsf@tleepslib.sk.tsukuba.ac.jp>
author stephent
date Wed, 22 Sep 2004 02:06:52 +0000
parents 04bc9d2f42c7
children ecf1ebac70d8
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1 /* Evaluator for XEmacs Lisp interpreter.
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2 Copyright (C) 1985-1987, 1992-1994 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4 Copyright (C) 2000, 2001, 2002, 2003 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: FSF 19.30 (except for Fsignal), Mule 2.0. */
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24
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25 /* Authorship:
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26
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27 Based on code from pre-release FSF 19, c. 1991.
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28 Some work by Richard Mlynarik long ago (c. 1993?) --
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29 added call-with-condition-handler; synch. up to released FSF 19.7
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30 for lemacs 19.8. some signal changes.
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31 Various work by Ben Wing, 1995-1996:
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32 added all stuff dealing with trapping errors, suspended-errors, etc.
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33 added most Fsignal front ends.
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34 added warning code.
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35 reworked the Fsignal code and synched the rest up to FSF 19.30.
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36 Some changes by Martin Buchholz c. 1999?
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37 e.g. PRIMITIVE_FUNCALL macros.
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38 New call_trapping_problems code and large comments below
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39 by Ben Wing, Mar-Apr 2000.
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40 */
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41
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42 /* This file has been Mule-ized. */
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43
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44 /* What is in this file?
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45
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46 This file contains the engine for the ELisp interpreter in XEmacs.
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47 The engine does the actual work of implementing function calls,
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48 form evaluation, non-local exits (catch, throw, signal,
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49 condition-case, call-with-condition-handler), unwind-protects,
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50 dynamic bindings, let constructs, backtraces, etc. You might say
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51 that this module is the very heart of XEmacs, and everything else
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52 in XEmacs is merely an auxiliary module implementing some specific
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53 functionality that may be called from the heart at an appropriate
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54 time.
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55
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56 The only exception is the alloc.c module, which implements the
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57 framework upon which this module (eval.c) works. alloc.c works
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58 with creating the actual Lisp objects themselves and garbage
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59 collecting them as necessary, presenting a nice, high-level
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60 interface for object creation, deletion, access, and modification.
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61
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62 The only other exception that could be cited is the event-handling
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63 module in event-stream.c. From its perspective, it is also the
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64 heart of XEmacs, and controls exactly what gets done at what time.
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65 From its perspective, eval.c is merely one of the auxiliary modules
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66 out there that can be invoked by event-stream.c.
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67
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68 Although the event-stream-centric view is a convenient fiction that
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69 makes sense particularly from the user's perspective and from the
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70 perspective of time, the engine-centric view is actually closest to
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71 the truth, because anywhere within the event-stream module, you are
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72 still somewhere in a Lisp backtrace, and event-loops are begun by
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73 functions such as `command-loop-1', a Lisp function.
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74
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75 As the Lisp engine is doing its thing, it maintains the state of
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76 the engine primarily in five list-like items, which are:
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77
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78 -- the backtrace list
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79 -- the catchtag list
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80 -- the condition-handler list
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81 -- the specbind list
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82 -- the GCPRO list.
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83
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84 These are described in detail in the next comment.
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85
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86 --ben
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87 */
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88
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89 /* Note that there are five separate lists used to maintain state in
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90 the evaluator. All of them conceptually are stacks (last-in,
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91 first-out). All non-local exits happen ultimately through the
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92 catch/throw mechanism, which uses one of the five lists (the
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93 catchtag list) and records the current state of the others in each
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94 frame of the list (some other information is recorded and restored
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95 as well, such as the current eval depth), so that all the state of
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96 the evaluator is restored properly when a non-local exit occurs.
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97 (Note that the current state of the condition-handler list is not
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98 recorded in the catchtag list. Instead, when a condition-case or
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99 call-with-condition-handler is set up, it installs an
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100 unwind-protect on the specbind list to restore the appropriate
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101 setting for the condition-handler list. During the course of
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102 handling the non-local exit, all entries on the specbind list that
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103 are past the location stored in the catch frame are "unwound"
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104 (i.e. variable bindings are restored and unwind-protects are
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105 executed), so the condition-handler list gets reset properly.
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106
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107 The five lists are
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108
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109 1. The backtrace list, which is chained through `struct backtrace's
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110 declared in the stack frames of various primitives, and keeps
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111 track of all Lisp function call entries and exits.
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112 2. The catchtag list, which is chained through `struct catchtag's
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113 declared in the stack frames of internal_catch and condition_case_1,
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114 and keeps track of information needed to reset the internal state
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115 of the evaluator to the state that was current when the catch or
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116 condition-case were established, in the event of a non-local exit.
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117 3. The condition-handler list, which is a simple Lisp list with new
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118 entries consed onto the front of the list. It records condition-cases
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119 and call-with-condition-handlers established either from C or from
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120 Lisp. Unlike with the other lists (but similar to everything else
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121 of a similar nature in the rest of the C and Lisp code), it takes care
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122 of restoring itself appropriately in the event of a non-local exit
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123 through the use of the unwind-protect mechanism.
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124 4. The specbind list, which is a contiguous array of `struct specbinding's,
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125 expanded as necessary using realloc(). It holds dynamic variable
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126 bindings (the only kind we currently have in ELisp) and unwind-protects.
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127 5. The GCPRO list, which is chained through `struct gcpro's declared in
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128 the stack frames of any functions that need to GC-protect Lisp_Objects
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129 declared on the stack. This is one of the most fragile areas of the
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130 entire scheme -- you must not forget to UNGCPRO at the end of your
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131 function, you must make sure you GCPRO in many circumstances you don't
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132 think you have to, etc. See the internals manual for more information
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133 about this.
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134
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135 --ben
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136 */
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137
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138 #include <config.h>
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139 #include "lisp.h"
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140
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141 #include "commands.h"
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142 #include "backtrace.h"
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143 #include "bytecode.h"
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144 #include "buffer.h"
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145 #include "console-impl.h"
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146 #include "device.h"
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147 #include "frame.h"
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148 #include "lstream.h"
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149 #include "opaque.h"
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150 #include "profile.h"
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151 #include "window.h"
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152
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153 struct backtrace *backtrace_list;
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154
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155 /* Macros for calling subrs with an argument list whose length is only
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156 known at runtime. See EXFUN and DEFUN for similar hackery. */
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157
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158 #define AV_0(av)
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159 #define AV_1(av) av[0]
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160 #define AV_2(av) AV_1(av), av[1]
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161 #define AV_3(av) AV_2(av), av[2]
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162 #define AV_4(av) AV_3(av), av[3]
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163 #define AV_5(av) AV_4(av), av[4]
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164 #define AV_6(av) AV_5(av), av[5]
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165 #define AV_7(av) AV_6(av), av[6]
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166 #define AV_8(av) AV_7(av), av[7]
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167
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168 #define PRIMITIVE_FUNCALL_1(fn, av, ac) \
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169 (((Lisp_Object (*)(EXFUN_##ac)) (fn)) (AV_##ac (av)))
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170
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171 /* If subrs take more than 8 arguments, more cases need to be added
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172 to this switch. (But wait - don't do it - if you really need
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173 a SUBR with more than 8 arguments, use max_args == MANY.
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174 Or better, considering using a property list as one of your args.
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175 See the DEFUN macro in lisp.h) */
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176 #define PRIMITIVE_FUNCALL(rv, fn, av, ac) do { \
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177 void (*PF_fn)(void) = (void (*)(void)) fn; \
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178 Lisp_Object *PF_av = (av); \
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179 switch (ac) \
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180 { \
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181 default:rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 0); break; \
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182 case 1: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 1); break; \
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183 case 2: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 2); break; \
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184 case 3: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 3); break; \
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185 case 4: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 4); break; \
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186 case 5: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 5); break; \
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187 case 6: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 6); break; \
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188 case 7: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 7); break; \
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189 case 8: rv = PRIMITIVE_FUNCALL_1(PF_fn, PF_av, 8); break; \
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190 } \
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191 } while (0)
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192
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193 #define FUNCALL_SUBR(rv, subr, av, ac) \
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194 PRIMITIVE_FUNCALL (rv, subr_function (subr), av, ac);
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195
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196
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197 /* This is the list of current catches (and also condition-cases).
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198 This is a stack: the most recent catch is at the head of the list.
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199 The list is threaded through the stack frames of the C functions
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200 that set up the catches; this is similar to the way the GCPRO list
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201 is handled, but different from the condition-handler list (which is
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202 a simple Lisp list) and the specbind stack, which is a contiguous
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203 array of `struct specbinding's, grown (using realloc()) as
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204 necessary. (Note that all four of these lists behave as a stacks.)
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205
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206 Catches are created by declaring a 'struct catchtag' locally,
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207 filling the .TAG field in with the tag, and doing a setjmp() on
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208 .JMP. Fthrow() will store the value passed to it in .VAL and
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209 longjmp() back to .JMP, back to the function that established the
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210 catch. This will always be either internal_catch() (catches
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211 established internally or through `catch') or condition_case_1
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212 (condition-cases established internally or through
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213 `condition-case').
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214
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215 The catchtag also records the current position in the
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216 call stack (stored in BACKTRACE_LIST), the current position
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217 in the specpdl stack (used for variable bindings and
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218 unwind-protects), the value of LISP_EVAL_DEPTH, and the
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219 current position in the GCPRO stack. All of these are
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220 restored by Fthrow().
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221 */
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222
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223 struct catchtag *catchlist;
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224
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225 /* A special tag that can be used internally from C code to catch
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226 every attempt to throw past this level. */
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227 Lisp_Object Vcatch_everything_tag;
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228
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229 Lisp_Object Qautoload, Qmacro, Qexit;
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230 Lisp_Object Qinteractive, Qcommandp, Qdefun, Qprogn, Qvalues;
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231 Lisp_Object Vquit_flag, Vinhibit_quit;
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232 Lisp_Object Qand_rest, Qand_optional;
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233 Lisp_Object Qdebug_on_error, Qstack_trace_on_error;
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234 Lisp_Object Qdebug_on_signal, Qstack_trace_on_signal;
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235 Lisp_Object Qdebugger;
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236 Lisp_Object Qinhibit_quit;
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237 Lisp_Object Qfinalize_list;
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238 Lisp_Object Qrun_hooks;
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239 Lisp_Object Qsetq;
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240 Lisp_Object Qdisplay_warning;
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241 Lisp_Object Vpending_warnings, Vpending_warnings_tail;
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242 Lisp_Object Qif;
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243
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244 /* Flags specifying which operations are currently inhibited. */
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245 int inhibit_flags;
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246
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247 /* Buffers, frames, windows, devices, and consoles created since most
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248 recent active
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249 call_trapping_problems (INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION).
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250 */
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251 Lisp_Object Vdeletable_permanent_display_objects;
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252
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253 /* Buffers created since most recent active
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254 call_trapping_problems (INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION). */
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255 Lisp_Object Vmodifiable_buffers;
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256
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257 /* Minimum level at which warnings are logged. Below this, they're ignored
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258 entirely -- not even generated. */
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259 Lisp_Object Vlog_warning_minimum_level;
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260
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261 /* Non-nil means record all fset's and provide's, to be undone
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262 if the file being autoloaded is not fully loaded.
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263 They are recorded by being consed onto the front of Vautoload_queue:
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264 (FUN . ODEF) for a defun, (OFEATURES . nil) for a provide. */
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265 Lisp_Object Vautoload_queue;
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266
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267 /* Current number of specbindings allocated in specpdl. */
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268 int specpdl_size;
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269
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270 /* Pointer to beginning of specpdl. */
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271 struct specbinding *specpdl;
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272
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273 /* Pointer to first unused element in specpdl. */
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274 struct specbinding *specpdl_ptr;
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275
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276 /* specpdl_ptr - specpdl */
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277 int specpdl_depth_counter;
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278
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279 /* Maximum size allowed for specpdl allocation */
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280 Fixnum max_specpdl_size;
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281
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282 /* Depth in Lisp evaluations and function calls. */
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283 int lisp_eval_depth;
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284
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285 /* Maximum allowed depth in Lisp evaluations and function calls. */
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286 Fixnum max_lisp_eval_depth;
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287
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288 /* Nonzero means enter debugger before next function call */
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289 static int debug_on_next_call;
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290
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291 int backtrace_with_internal_sections;
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292
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293 /* List of conditions (non-nil atom means all) which cause a backtrace
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294 if an error is handled by the command loop's error handler. */
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295 Lisp_Object Vstack_trace_on_error;
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296
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297 /* List of conditions (non-nil atom means all) which enter the debugger
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298 if an error is handled by the command loop's error handler. */
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299 Lisp_Object Vdebug_on_error;
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300
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301 /* List of conditions and regexps specifying error messages which
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302 do not enter the debugger even if Vdebug_on_error says they should. */
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303 Lisp_Object Vdebug_ignored_errors;
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304
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305 /* List of conditions (non-nil atom means all) which cause a backtrace
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306 if any error is signalled. */
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307 Lisp_Object Vstack_trace_on_signal;
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308
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309 /* List of conditions (non-nil atom means all) which enter the debugger
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310 if any error is signalled. */
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311 Lisp_Object Vdebug_on_signal;
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312
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313 /* Nonzero means enter debugger if a quit signal
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314 is handled by the command loop's error handler.
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315
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316 From lisp, this is a boolean variable and may have the values 0 and 1.
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317 But, eval.c temporarily uses the second bit of this variable to indicate
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318 that a critical_quit is in progress. The second bit is reset immediately
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319 after it is processed in signal_call_debugger(). */
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320 int debug_on_quit;
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321
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322 #if 0 /* FSFmacs */
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323 /* entering_debugger is basically equivalent */
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324 /* The value of num_nonmacro_input_chars as of the last time we
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325 started to enter the debugger. If we decide to enter the debugger
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326 again when this is still equal to num_nonmacro_input_chars, then we
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327 know that the debugger itself has an error, and we should just
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328 signal the error instead of entering an infinite loop of debugger
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329 invocations. */
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330 int when_entered_debugger;
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331 #endif
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332
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333 /* Nonzero means we are trying to enter the debugger.
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334 This is to prevent recursive attempts.
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335 Cleared by the debugger calling Fbacktrace */
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336 static int entering_debugger;
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337
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338 /* Function to call to invoke the debugger */
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339 Lisp_Object Vdebugger;
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340
853
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341 /* List of condition handlers currently in effect.
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342 The elements of this lists were at one point in the past
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343 threaded through the stack frames of Fcondition_case and
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344 related functions, but now are stored separately in a normal
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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345 stack. When an error is signaled (by calling Fsignal, below),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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346 this list is searched for an element that applies.
428
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347
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348 Each element of this list is one of the following:
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349
853
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350 -- A list of a handler function and possibly args to pass to the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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351 function. This is a handler established with the Lisp primitive
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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352 `call-with-condition-handler' or related C function
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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353 call_with_condition_handler():
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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354
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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355 If the handler function is an opaque ptr object, it is a handler
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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356 that was established in C using call_with_condition_handler(),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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357 and the contents of the object are a function pointer which takes
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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358 three arguments, the signal name and signal data (same arguments
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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359 passed to `signal') and a third Lisp_Object argument, specified
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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360 in the call to call_with_condition_handler() and stored as the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
361 second element of the list containing the handler functionl.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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362
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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363 If the handler function is a regular Lisp_Object, it is a handler
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
364 that was established using `call-with-condition-handler'.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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365 Currently there are no more arguments in the list containing the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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366 handler function, and only one argument is passed to the handler
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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367 function: a cons of the signal name and signal data arguments
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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368 passed to `signal'.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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369
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370 -- A list whose car is Qunbound and whose cdr is Qt. This is a
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
371 special condition-case handler established by C code with
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
372 condition_case_1(). All errors are trapped; the debugger is not
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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373 invoked even if `debug-on-error' was set.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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374
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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375 -- A list whose car is Qunbound and whose cdr is Qerror. This is a
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
376 special condition-case handler established by C code with
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
377 condition_case_1(). It is like Qt except that the debugger is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
378 invoked normally if it is called for.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
379
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
380 -- A list whose car is Qunbound and whose cdr is a list of lists
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
381 (CONDITION-NAME BODY ...) exactly as in `condition-case'. This is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
382 a normal `condition-case' handler.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
383
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
384 Note that in all cases *except* the first, there is a corresponding
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
385 catch, whose TAG is the value of Vcondition_handlers just after the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
386 handler data just described is pushed onto it. The reason is that
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
387 `condition-case' handlers need to throw back to the place where the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
388 handler was installed before invoking it, while
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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389 `call-with-condition-handler' handlers are invoked in the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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390 environment that `signal' was invoked in. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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diff changeset
391
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
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392
428
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393 static Lisp_Object Vcondition_handlers;
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394
853
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diff changeset
395 /* I think we should keep this enabled all the time, not just when
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
396 error checking is enabled, because if one of these puppies pops up,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
397 it will trash the stack if not caught, making it that much harder to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
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diff changeset
398 debug. It doesn't cause speed loss. */
442
abe6d1db359e Import from CVS: tag r21-2-36
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parents: 440
diff changeset
399 #define DEFEND_AGAINST_THROW_RECURSION
abe6d1db359e Import from CVS: tag r21-2-36
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parents: 440
diff changeset
400
abe6d1db359e Import from CVS: tag r21-2-36
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parents: 440
diff changeset
401 #ifdef DEFEND_AGAINST_THROW_RECURSION
428
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parents:
diff changeset
402 /* Used for error catching purposes by throw_or_bomb_out */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
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403 static int throw_level;
442
abe6d1db359e Import from CVS: tag r21-2-36
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parents: 440
diff changeset
404 #endif
abe6d1db359e Import from CVS: tag r21-2-36
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parents: 440
diff changeset
405
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
406 static int warning_will_be_discarded (Lisp_Object level);
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
407
428
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408
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409 /************************************************************************/
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parents:
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410 /* The subr object type */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
411 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
412
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parents:
diff changeset
413 static void
2286
04bc9d2f42c7 [xemacs-hg @ 2004-09-20 19:18:55 by james]
james
parents: 2268
diff changeset
414 print_subr (Lisp_Object obj, Lisp_Object printcharfun, int UNUSED (escapeflag))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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415 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
416 Lisp_Subr *subr = XSUBR (obj);
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
417 const CIbyte *header =
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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418 (subr->max_args == UNEVALLED) ? "#<special-form " : "#<subr ";
867
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parents: 853
diff changeset
419 const CIbyte *name = subr_name (subr);
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
420 const CIbyte *trailer = subr->prompt ? " (interactive)>" : ">";
428
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421
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parents:
diff changeset
422 if (print_readably)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
423 printing_unreadable_object ("%s%s%s", header, name, trailer);
428
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parents:
diff changeset
424
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
425 write_c_string (printcharfun, header);
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ben
parents: 814
diff changeset
426 write_c_string (printcharfun, name);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
427 write_c_string (printcharfun, trailer);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
428 }
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diff changeset
429
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
430 static const struct memory_description subr_description[] = {
1598
ac1be85b4a5f [xemacs-hg @ 2003-07-31 13:32:24 by crestani]
crestani
parents: 1333
diff changeset
431 { XD_DOC_STRING, offsetof (Lisp_Subr, doc), 0, 0, XD_FLAG_NO_KKCC },
428
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432 { XD_END }
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433 };
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
434
938
0391335b65dc [xemacs-hg @ 2002-07-31 07:14:49 by michaels]
michaels
parents: 930
diff changeset
435 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("subr", subr,
0391335b65dc [xemacs-hg @ 2002-07-31 07:14:49 by michaels]
michaels
parents: 930
diff changeset
436 1, /*dumpable-flag*/
0391335b65dc [xemacs-hg @ 2002-07-31 07:14:49 by michaels]
michaels
parents: 930
diff changeset
437 0, print_subr, 0, 0, 0,
0391335b65dc [xemacs-hg @ 2002-07-31 07:14:49 by michaels]
michaels
parents: 930
diff changeset
438 subr_description,
0391335b65dc [xemacs-hg @ 2002-07-31 07:14:49 by michaels]
michaels
parents: 930
diff changeset
439 Lisp_Subr);
428
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440
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441 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
442 /* Entering the debugger */
3ecd8885ac67 Import from CVS: tag r21-2-22
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443 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
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444
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
445 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
446 current_warning_level (void)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
447 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
448 if (inhibit_flags & ISSUE_WARNINGS_AT_DEBUG_LEVEL)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
449 return Qdebug;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
450 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
451 return Qwarning;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
452 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
453
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
454 /* Actually call the debugger. ARG is a list of args that will be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
455 passed to the debugger function, as follows;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
456
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
457 If due to frame exit, args are `exit' and the value being returned;
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458 this function's value will be returned instead of that.
3ecd8885ac67 Import from CVS: tag r21-2-22
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459 If due to error, args are `error' and a list of the args to `signal'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
460 If due to `apply' or `funcall' entry, one arg, `lambda'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
461 If due to `eval' entry, one arg, t.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
462
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
463 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
464
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
465 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
466 call_debugger_259 (Lisp_Object arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
467 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
468 return apply1 (Vdebugger, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
469 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
470
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
471 /* Call the debugger, doing some encapsulation. We make sure we have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
472 some room on the eval and specpdl stacks, and bind entering_debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
473 to 1 during this call. This is used to trap errors that may occur
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
474 when entering the debugger (e.g. the value of `debugger' is invalid),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
475 so that the debugger will not be recursively entered if debug-on-error
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
476 is set. (Otherwise, XEmacs would infinitely recurse, attempting to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
477 enter the debugger.) entering_debugger gets reset to 0 as soon
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
478 as a backtrace is displayed, so that further errors can indeed be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
479 handled normally.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
480
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
481 We also establish a catch for 'debugger. If the debugger function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
482 throws to this instead of returning a value, it means that the user
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
483 pressed 'c' (pretend like the debugger was never entered). The
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
484 function then returns Qunbound. (If the user pressed 'r', for
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
485 return a value, then the debugger function returns normally with
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
486 this value.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
487
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
488 The difference between 'c' and 'r' is as follows:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
489
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
490 debug-on-call:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
491 No difference. The call proceeds as normal.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
492 debug-on-exit:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
493 With 'r', the specified value is returned as the function's
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
494 return value. With 'c', the value that would normally be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
495 returned is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
496 signal:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
497 With 'r', the specified value is returned as the return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
498 value of `signal'. (This is the only time that `signal'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
499 can return, instead of making a non-local exit.) With `c',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
500 `signal' will continue looking for handlers as if the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
501 debugger was never entered, and will probably end up
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
502 throwing to a handler or to top-level.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
503 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
504
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
505 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
506 call_debugger (Lisp_Object arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
507 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
508 int threw;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
509 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
510 int speccount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
511
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
512 debug_on_next_call = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
513
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
514 if (inhibit_flags & INHIBIT_ENTERING_DEBUGGER)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
515 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
516 if (!(inhibit_flags & INHIBIT_WARNING_ISSUE))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
517 warn_when_safe
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
518 (Qdebugger, current_warning_level (),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
519 "Unable to enter debugger within critical section");
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
520 return Qunbound;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
521 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
522
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
523 if (lisp_eval_depth + 20 > max_lisp_eval_depth)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
524 max_lisp_eval_depth = lisp_eval_depth + 20;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
525 if (specpdl_size + 40 > max_specpdl_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
526 max_specpdl_size = specpdl_size + 40;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
527
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
528 speccount = internal_bind_int (&entering_debugger, 1);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
529 val = internal_catch (Qdebugger, call_debugger_259, arg, &threw, 0);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
530
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
531 return unbind_to_1 (speccount, ((threw)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
532 ? Qunbound /* Not returning a value */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
533 : val));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
534 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
535
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
536 /* Called when debug-on-exit behavior is called for. Enter the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
537 with the appropriate args for this. VAL is the exit value that is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
538 about to be returned. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
539
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
540 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
541 do_debug_on_exit (Lisp_Object val)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
542 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
543 /* This is falsified by call_debugger */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
544 Lisp_Object v = call_debugger (list2 (Qexit, val));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
545
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
546 return !UNBOUNDP (v) ? v : val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
547 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
548
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
549 /* Called when debug-on-call behavior is called for. Enter the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
550 with the appropriate args for this. VAL is either t for a call
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
551 through `eval' or 'lambda for a call through `funcall'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
552
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
553 #### The differentiation here between EVAL and FUNCALL is bogus.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
554 FUNCALL can be defined as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
555
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
556 (defmacro func (fun &rest args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
557 (cons (eval fun) args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
558
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
559 and should be treated as such.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
560 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
561
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
562 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
563 do_debug_on_call (Lisp_Object code)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
564 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
565 debug_on_next_call = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
566 backtrace_list->debug_on_exit = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
567 call_debugger (list1 (code));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
568 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
569
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
570 /* LIST is the value of one of the variables `debug-on-error',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
571 `debug-on-signal', `stack-trace-on-error', or `stack-trace-on-signal',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
572 and CONDITIONS is the list of error conditions associated with
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
573 the error being signalled. This returns non-nil if LIST
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
574 matches CONDITIONS. (A nil value for LIST does not match
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
575 CONDITIONS. A non-list value for LIST does match CONDITIONS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
576 A list matches CONDITIONS when one of the symbols in LIST is the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
577 same as one of the symbols in CONDITIONS.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
578
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
579 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
580 wants_debugger (Lisp_Object list, Lisp_Object conditions)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
581 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
582 if (NILP (list))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
583 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
584 if (! CONSP (list))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
585 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
586
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
587 while (CONSP (conditions))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
588 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
589 Lisp_Object this, tail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
590 this = XCAR (conditions);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
591 for (tail = list; CONSP (tail); tail = XCDR (tail))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
592 if (EQ (XCAR (tail), this))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
593 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
594 conditions = XCDR (conditions);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
595 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
596 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
597 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
598
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
599
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
600 /* Return 1 if an error with condition-symbols CONDITIONS,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
601 and described by SIGNAL-DATA, should skip the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
602 according to debugger-ignore-errors. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
603
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
604 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
605 skip_debugger (Lisp_Object conditions, Lisp_Object data)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
606 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
607 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
608 Lisp_Object tail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
609 int first_string = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
610 Lisp_Object error_message = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
611
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
612 for (tail = Vdebug_ignored_errors; CONSP (tail); tail = XCDR (tail))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
613 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
614 if (STRINGP (XCAR (tail)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
615 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
616 if (first_string)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
617 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
618 error_message = Ferror_message_string (data);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
619 first_string = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
620 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
621 if (fast_lisp_string_match (XCAR (tail), error_message) >= 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
622 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
623 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
624 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
625 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
626 Lisp_Object contail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
627
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
628 for (contail = conditions; CONSP (contail); contail = XCDR (contail))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
629 if (EQ (XCAR (tail), XCAR (contail)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
630 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
631 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
632 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
633
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
634 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
635 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
636
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
637 /* Actually generate a backtrace on STREAM. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
638
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
639 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
640 backtrace_259 (Lisp_Object stream)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
641 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
642 return Fbacktrace (stream, Qt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
643 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
644
1130
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
645 #ifdef DEBUG_XEMACS
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
646
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
647 static void
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
648 trace_out_and_die (Lisp_Object err)
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
649 {
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
650 Fdisplay_error (err, Qt);
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
651 backtrace_259 (Qnil);
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
652 stderr_out ("XEmacs exiting to debugger.\n");
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
653 Fforce_debugging_signal (Qt);
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
654 /* Unlikely to be reached */
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
655 }
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
656
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
657 #endif
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
658
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
659 /* An error was signaled. Maybe call the debugger, if the `debug-on-error'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
660 etc. variables call for this. CONDITIONS is the list of conditions
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
661 associated with the error being signalled. SIG is the actual error
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
662 being signalled, and DATA is the associated data (these are exactly
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
663 the same as the arguments to `signal'). ACTIVE_HANDLERS is the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
664 list of error handlers that are to be put in place while the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
665 is called. This is generally the remaining handlers that are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
666 outside of the innermost handler trapping this error. This way,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
667 if the same error occurs inside of the debugger, you usually don't get
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
668 the debugger entered recursively.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
669
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
670 This function returns Qunbound if it didn't call the debugger or if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
671 the user asked (through 'c') that XEmacs should pretend like the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
672 debugger was never entered. Otherwise, it returns the value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
673 that the user specified with `r'. (Note that much of the time,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
674 the user will abort with C-], and we will never have a chance to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
675 return anything at all.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
676
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
677 SIGNAL_VARS_ONLY means we should only look at debug-on-signal
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
678 and stack-trace-on-signal to control whether we do anything.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
679 This is so that debug-on-error doesn't make handled errors
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
680 cause the debugger to get invoked.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
681
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
682 STACK_TRACE_DISPLAYED and DEBUGGER_ENTERED are used so that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
683 those functions aren't done more than once in a single `signal'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
684 session. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
685
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
686 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
687 signal_call_debugger (Lisp_Object conditions,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
688 Lisp_Object sig, Lisp_Object data,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
689 Lisp_Object active_handlers,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
690 int signal_vars_only,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
691 int *stack_trace_displayed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
692 int *debugger_entered)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
693 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
694 #ifdef PIGS_FLY_AND_ALL_C_CODE_CAN_HANDLE_GC_OCCURRING_ALMOST_ANYWHERE
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
695 /* This function can GC */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
696 #else /* reality check */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
697 /* This function cannot GC because it inhibits GC during its operation */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
698 #endif
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
699
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
700 Lisp_Object val = Qunbound;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
701 Lisp_Object all_handlers = Vcondition_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
702 Lisp_Object temp_data = Qnil;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
703 int outer_speccount = specpdl_depth();
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
704 int speccount;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
705
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
706 #ifdef PIGS_FLY_AND_ALL_C_CODE_CAN_HANDLE_GC_OCCURRING_ALMOST_ANYWHERE
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
707 struct gcpro gcpro1, gcpro2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
708 GCPRO2 (all_handlers, temp_data);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
709 #else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
710 begin_gc_forbidden ();
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
711 #endif
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
712
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
713 speccount = specpdl_depth();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
714
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
715 Vcondition_handlers = active_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
716
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
717 temp_data = Fcons (sig, data); /* needed for skip_debugger */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
718
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
719 if (!entering_debugger && !*stack_trace_displayed && !signal_vars_only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
720 && wants_debugger (Vstack_trace_on_error, conditions)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
721 && !skip_debugger (conditions, temp_data))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
722 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
723 specbind (Qdebug_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
724 specbind (Qstack_trace_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
725 specbind (Qdebug_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
726 specbind (Qstack_trace_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
727
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
728 if (!noninteractive)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
729 internal_with_output_to_temp_buffer (build_string ("*Backtrace*"),
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
730 backtrace_259,
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
731 Qnil,
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
732 Qnil);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
733 else /* in batch mode, we want this going to stderr. */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
734 backtrace_259 (Qnil);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
735 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
736 *stack_trace_displayed = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
737 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
738
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
739 if (!entering_debugger && !*debugger_entered && !signal_vars_only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
740 && (EQ (sig, Qquit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
741 ? debug_on_quit
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
742 : wants_debugger (Vdebug_on_error, conditions))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
743 && !skip_debugger (conditions, temp_data))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
744 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
745 debug_on_quit &= ~2; /* reset critical bit */
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
746
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
747 specbind (Qdebug_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
748 specbind (Qstack_trace_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
749 specbind (Qdebug_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
750 specbind (Qstack_trace_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
751
1130
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
752 #ifdef DEBUG_XEMACS
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
753 if (noninteractive)
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
754 trace_out_and_die (Fcons (sig, data));
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
755 #endif
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
756
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
757 val = call_debugger (list2 (Qerror, (Fcons (sig, data))));
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
758 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
759 *debugger_entered = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
760 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
761
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
762 if (!entering_debugger && !*stack_trace_displayed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
763 && wants_debugger (Vstack_trace_on_signal, conditions))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
764 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
765 specbind (Qdebug_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
766 specbind (Qstack_trace_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
767 specbind (Qdebug_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
768 specbind (Qstack_trace_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
769
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
770 if (!noninteractive)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
771 internal_with_output_to_temp_buffer (build_string ("*Backtrace*"),
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
772 backtrace_259,
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
773 Qnil,
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
774 Qnil);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
775 else /* in batch mode, we want this going to stderr. */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
776 backtrace_259 (Qnil);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
777 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
778 *stack_trace_displayed = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
779 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
780
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
781 if (!entering_debugger && !*debugger_entered
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
782 && (EQ (sig, Qquit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
783 ? debug_on_quit
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
784 : wants_debugger (Vdebug_on_signal, conditions)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
785 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
786 debug_on_quit &= ~2; /* reset critical bit */
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
787
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
788 specbind (Qdebug_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
789 specbind (Qstack_trace_on_error, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
790 specbind (Qdebug_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
791 specbind (Qstack_trace_on_signal, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
792
1130
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
793 #ifdef DEBUG_XEMACS
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
794 if (noninteractive)
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
795 trace_out_and_die (Fcons (sig, data));
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
796 #endif
ccd0667b4764 [xemacs-hg @ 2002-11-30 08:10:24 by ben]
ben
parents: 1123
diff changeset
797
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
798 val = call_debugger (list2 (Qerror, (Fcons (sig, data))));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
799 *debugger_entered = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
800 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
801
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
802 #ifdef PIGS_FLY_AND_ALL_C_CODE_CAN_HANDLE_GC_OCCURRING_ALMOST_ANYWHERE
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
803 UNGCPRO;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
804 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
805 Vcondition_handlers = all_handlers;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
806 return unbind_to_1 (outer_speccount, val);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
807 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
808
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
809
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
810 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
811 /* The basic special forms */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
812 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
813
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
814 /* Except for Fprogn(), the basic special forms below are only called
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
815 from interpreted code. The byte compiler turns them into bytecodes. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
816
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
817 DEFUN ("or", For, 0, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
818 Eval args until one of them yields non-nil, then return that value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
819 The remaining args are not evalled at all.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
820 If all args return nil, return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
821 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
822 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
823 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
824 /* This function can GC */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
825 REGISTER Lisp_Object val;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
826
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
827 LIST_LOOP_2 (arg, args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
828 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
829 if (!NILP (val = Feval (arg)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
830 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
831 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
832
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
833 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
834 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
835
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
836 DEFUN ("and", Fand, 0, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
837 Eval args until one of them yields nil, then return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
838 The remaining args are not evalled at all.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
839 If no arg yields nil, return the last arg's value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
840 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
841 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
842 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
843 /* This function can GC */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
844 REGISTER Lisp_Object val = Qt;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
846 LIST_LOOP_2 (arg, args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
847 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
848 if (NILP (val = Feval (arg)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
849 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
850 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
851
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
852 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
853 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
854
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
855 DEFUN ("if", Fif, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
856 \(if COND THEN ELSE...): if COND yields non-nil, do THEN, else do ELSE...
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
857 Returns the value of THEN or the value of the last of the ELSE's.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
858 THEN must be one expression, but ELSE... can be zero or more expressions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
859 If COND yields nil, and there are no ELSE's, the value is nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
860 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
861 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
862 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
863 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
864 Lisp_Object condition = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
865 Lisp_Object then_form = XCAR (XCDR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
866 Lisp_Object else_forms = XCDR (XCDR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
867
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
868 if (!NILP (Feval (condition)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
869 return Feval (then_form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
870 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
871 return Fprogn (else_forms);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
872 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
873
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
874 /* Macros `when' and `unless' are trivially defined in Lisp,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
875 but it helps for bootstrapping to have them ALWAYS defined. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
876
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
877 DEFUN ("when", Fwhen, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
878 \(when COND BODY...): if COND yields non-nil, do BODY, else return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
879 BODY can be zero or more expressions. If BODY is nil, return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
880 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
881 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
882 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
883 Lisp_Object cond = args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
884 Lisp_Object body;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
885
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
886 switch (nargs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
887 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
888 case 1: body = Qnil; break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
889 case 2: body = args[1]; break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
890 default: body = Fcons (Qprogn, Flist (nargs-1, args+1)); break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
891 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
892
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
893 return list3 (Qif, cond, body);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
894 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
895
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
896 DEFUN ("unless", Funless, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
897 \(unless COND BODY...): if COND yields nil, do BODY, else return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
898 BODY can be zero or more expressions. If BODY is nil, return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
899 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
900 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
901 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
902 Lisp_Object cond = args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
903 Lisp_Object body = Flist (nargs-1, args+1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
904 return Fcons (Qif, Fcons (cond, Fcons (Qnil, body)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
905 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
906
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
907 DEFUN ("cond", Fcond, 0, UNEVALLED, 0, /*
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
908 \(cond CLAUSES...): try each clause until one succeeds.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
909 Each clause looks like (CONDITION BODY...). CONDITION is evaluated
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
910 and, if the value is non-nil, this clause succeeds:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
911 then the expressions in BODY are evaluated and the last one's
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
912 value is the value of the cond-form.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
913 If no clause succeeds, cond returns nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
914 If a clause has one element, as in (CONDITION),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
915 CONDITION's value if non-nil is returned from the cond-form.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
916 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
917 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
918 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
919 /* This function can GC */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
920 REGISTER Lisp_Object val;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
921
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
922 LIST_LOOP_2 (clause, args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
923 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
924 CHECK_CONS (clause);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
925 if (!NILP (val = Feval (XCAR (clause))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
926 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
927 if (!NILP (clause = XCDR (clause)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
928 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
929 CHECK_TRUE_LIST (clause);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
930 val = Fprogn (clause);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
931 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
932 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
933 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
934 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
935
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
936 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
937 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
938
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
939 DEFUN ("progn", Fprogn, 0, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
940 \(progn BODY...): eval BODY forms sequentially and return value of last one.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
941 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
942 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
943 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
944 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
945 /* Caller must provide a true list in ARGS */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
946 REGISTER Lisp_Object val = Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
947 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
948
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
949 GCPRO1 (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
950
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
951 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
952 LIST_LOOP_2 (form, args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
953 val = Feval (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
954 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
956 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
957 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
958 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
959
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
960 /* Fprog1() is the canonical example of a function that must GCPRO a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
961 Lisp_Object across calls to Feval(). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
962
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
963 DEFUN ("prog1", Fprog1, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
964 Similar to `progn', but the value of the first form is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
965 \(prog1 FIRST BODY...): All the arguments are evaluated sequentially.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
966 The value of FIRST is saved during evaluation of the remaining args,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
967 whose values are discarded.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
968 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
969 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
970 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
971 /* This function can GC */
1849
21549d437f09 [xemacs-hg @ 2004-01-03 21:54:41 by james]
james
parents: 1737
diff changeset
972 Lisp_Object val;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
973 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
974
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
975 val = Feval (XCAR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
976
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
977 GCPRO1 (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
978
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
979 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
980 LIST_LOOP_2 (form, XCDR (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
981 Feval (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
982 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
983
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
984 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
985 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
986 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
987
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
988 DEFUN ("prog2", Fprog2, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
989 Similar to `progn', but the value of the second form is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
990 \(prog2 FIRST SECOND BODY...): All the arguments are evaluated sequentially.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
991 The value of SECOND is saved during evaluation of the remaining args,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
992 whose values are discarded.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
993 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
994 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
995 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
996 /* This function can GC */
1849
21549d437f09 [xemacs-hg @ 2004-01-03 21:54:41 by james]
james
parents: 1737
diff changeset
997 Lisp_Object val;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
998 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
999
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1000 Feval (XCAR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1001 args = XCDR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1002 val = Feval (XCAR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1003 args = XCDR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1004
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1005 GCPRO1 (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1006
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1007 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1008 LIST_LOOP_2 (form, args)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1009 Feval (form);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1010 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1011
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1012 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1013 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1014 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1015
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1016 DEFUN ("let*", FletX, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1017 \(let* VARLIST BODY...): bind variables according to VARLIST then eval BODY.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1018 The value of the last form in BODY is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1019 Each element of VARLIST is a symbol (which is bound to nil)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1020 or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1021 Each VALUEFORM can refer to the symbols already bound by this VARLIST.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1022 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1023 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1024 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1025 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1026 Lisp_Object varlist = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1027 Lisp_Object body = XCDR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1028 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1029
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1030 EXTERNAL_LIST_LOOP_3 (var, varlist, tail)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1031 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1032 Lisp_Object symbol, value, tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1033 if (SYMBOLP (var))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1034 symbol = var, value = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1035 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1036 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1037 CHECK_CONS (var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1038 symbol = XCAR (var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1039 tem = XCDR (var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1040 if (NILP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1041 value = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1042 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1043 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1044 CHECK_CONS (tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1045 value = Feval (XCAR (tem));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1046 if (!NILP (XCDR (tem)))
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
1047 sferror
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1048 ("`let' bindings can have only one value-form", var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1049 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1050 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1051 specbind (symbol, value);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1052 }
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1053 return unbind_to_1 (speccount, Fprogn (body));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1054 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1055
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1056 DEFUN ("let", Flet, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1057 \(let VARLIST BODY...): bind variables according to VARLIST then eval BODY.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1058 The value of the last form in BODY is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1059 Each element of VARLIST is a symbol (which is bound to nil)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1060 or a list (SYMBOL VALUEFORM) (which binds SYMBOL to the value of VALUEFORM).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1061 All the VALUEFORMs are evalled before any symbols are bound.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1062 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1063 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1064 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1065 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1066 Lisp_Object varlist = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1067 Lisp_Object body = XCDR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1068 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1069 Lisp_Object *temps;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1070 int idx;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1071 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1072
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1073 /* Make space to hold the values to give the bound variables. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1074 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1075 int varcount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1076 GET_EXTERNAL_LIST_LENGTH (varlist, varcount);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1077 temps = alloca_array (Lisp_Object, varcount);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1078 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1079
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1080 /* Compute the values and store them in `temps' */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1081 GCPRO1 (*temps);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1082 gcpro1.nvars = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1083
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1084 idx = 0;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1085 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1086 LIST_LOOP_2 (var, varlist)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1087 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1088 Lisp_Object *value = &temps[idx++];
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1089 if (SYMBOLP (var))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1090 *value = Qnil;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1091 else
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1092 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1093 Lisp_Object tem;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1094 CHECK_CONS (var);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1095 tem = XCDR (var);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1096 if (NILP (tem))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1097 *value = Qnil;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1098 else
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1099 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1100 CHECK_CONS (tem);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1101 *value = Feval (XCAR (tem));
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1102 gcpro1.nvars = idx;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1103
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1104 if (!NILP (XCDR (tem)))
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
1105 sferror
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1106 ("`let' bindings can have only one value-form", var);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1107 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1108 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1109 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1110 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1111
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1112 idx = 0;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1113 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1114 LIST_LOOP_2 (var, varlist)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1115 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1116 specbind (SYMBOLP (var) ? var : XCAR (var), temps[idx++]);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1117 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1118 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1119
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1120 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1121
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1122 return unbind_to_1 (speccount, Fprogn (body));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1123 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1124
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1125 DEFUN ("while", Fwhile, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1126 \(while TEST BODY...): if TEST yields non-nil, eval BODY... and repeat.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1127 The order of execution is thus TEST, BODY, TEST, BODY and so on
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1128 until TEST returns nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1129 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1130 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1131 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1132 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1133 Lisp_Object test = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1134 Lisp_Object body = XCDR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1135
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1136 while (!NILP (Feval (test)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1137 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1138 QUIT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1139 Fprogn (body);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1140 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1141
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1142 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1143 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1144
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1145 DEFUN ("setq", Fsetq, 0, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1146 \(setq SYM VAL SYM VAL ...): set each SYM to the value of its VAL.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1147 The symbols SYM are variables; they are literal (not evaluated).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1148 The values VAL are expressions; they are evaluated.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1149 Thus, (setq x (1+ y)) sets `x' to the value of `(1+ y)'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1150 The second VAL is not computed until after the first SYM is set, and so on;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1151 each VAL can use the new value of variables set earlier in the `setq'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1152 The return value of the `setq' form is the value of the last VAL.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1153 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1154 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1155 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1156 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1157 Lisp_Object symbol, tail, val = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1158 int nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1159 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1160
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1161 GET_LIST_LENGTH (args, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1162
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1163 if (nargs & 1) /* Odd number of arguments? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1164 Fsignal (Qwrong_number_of_arguments, list2 (Qsetq, make_int (nargs)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1165
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1166 GCPRO1 (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1167
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1168 PROPERTY_LIST_LOOP (tail, symbol, val, args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1169 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1170 val = Feval (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1171 Fset (symbol, val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1172 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1173
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1174 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1175 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1176 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1177
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1178 DEFUN ("quote", Fquote, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1179 Return the argument, without evaluating it. `(quote x)' yields `x'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1180 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1181 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1182 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1183 return XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1184 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1185
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1186 DEFUN ("function", Ffunction, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1187 Like `quote', but preferred for objects which are functions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1188 In byte compilation, `function' causes its argument to be compiled.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1189 `quote' cannot do that.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1190 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1191 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1192 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1193 return XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1194 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1195
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1196
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1197 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1198 /* Defining functions/variables */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1199 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1200 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1201 define_function (Lisp_Object name, Lisp_Object defn)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1202 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1203 Ffset (name, defn);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1204 LOADHIST_ATTACH (name);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1205 return name;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1206 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1207
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1208 DEFUN ("defun", Fdefun, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1209 \(defun NAME ARGLIST [DOCSTRING] BODY...): define NAME as a function.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1210 The definition is (lambda ARGLIST [DOCSTRING] BODY...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1211 See also the function `interactive'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1212 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1213 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1214 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1215 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1216 return define_function (XCAR (args),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1217 Fcons (Qlambda, XCDR (args)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1218 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1219
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1220 DEFUN ("defmacro", Fdefmacro, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1221 \(defmacro NAME ARGLIST [DOCSTRING] BODY...): define NAME as a macro.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1222 The definition is (macro lambda ARGLIST [DOCSTRING] BODY...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1223 When the macro is called, as in (NAME ARGS...),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1224 the function (lambda ARGLIST BODY...) is applied to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1225 the list ARGS... as it appears in the expression,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1226 and the result should be a form to be evaluated instead of the original.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1227 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1228 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1229 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1230 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1231 return define_function (XCAR (args),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1232 Fcons (Qmacro, Fcons (Qlambda, XCDR (args))));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1233 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1234
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1235 DEFUN ("defvar", Fdefvar, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1236 \(defvar SYMBOL INITVALUE DOCSTRING): define SYMBOL as a variable.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1237 You are not required to define a variable in order to use it,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1238 but the definition can supply documentation and an initial value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1239 in a way that tags can recognize.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1240
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1241 INITVALUE is evaluated, and used to set SYMBOL, only if SYMBOL's value is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1242 void. (However, when you evaluate a defvar interactively, it acts like a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1243 defconst: SYMBOL's value is always set regardless of whether it's currently
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1244 void.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1245 If SYMBOL is buffer-local, its default value is what is set;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1246 buffer-local values are not affected.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1247 INITVALUE and DOCSTRING are optional.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1248 If DOCSTRING starts with *, this variable is identified as a user option.
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1249 This means that M-x set-variable recognizes it.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1250 If INITVALUE is missing, SYMBOL's value is not set.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1251
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1252 In lisp-interaction-mode defvar is treated as defconst.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1253 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1254 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1255 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1256 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1257 Lisp_Object sym = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1258
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1259 if (!NILP (args = XCDR (args)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1260 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1261 Lisp_Object val = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1262
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1263 if (NILP (Fdefault_boundp (sym)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1264 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1265 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1266 GCPRO1 (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1267 val = Feval (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1268 Fset_default (sym, val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1269 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1270 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1271
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1272 if (!NILP (args = XCDR (args)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1273 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1274 Lisp_Object doc = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1275 Fput (sym, Qvariable_documentation, doc);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1276 if (!NILP (args = XCDR (args)))
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
1277 signal_error (Qwrong_number_of_arguments, "too many arguments", Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1278 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1279 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1280
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1281 #ifdef I18N3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1282 if (!NILP (Vfile_domain))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1283 Fput (sym, Qvariable_domain, Vfile_domain);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1284 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1285
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1286 LOADHIST_ATTACH (sym);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1287 return sym;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1288 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1289
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1290 DEFUN ("defconst", Fdefconst, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1291 \(defconst SYMBOL INITVALUE DOCSTRING): define SYMBOL as a constant
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1292 variable.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1293 The intent is that programs do not change this value, but users may.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1294 Always sets the value of SYMBOL to the result of evalling INITVALUE.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1295 If SYMBOL is buffer-local, its default value is what is set;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1296 buffer-local values are not affected.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1297 DOCSTRING is optional.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1298 If DOCSTRING starts with *, this variable is identified as a user option.
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1299 This means that M-x set-variable recognizes it.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1300
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1301 Note: do not use `defconst' for user options in libraries that are not
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1302 normally loaded, since it is useful for users to be able to specify
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1303 their own values for such variables before loading the library.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1304 Since `defconst' unconditionally assigns the variable,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1305 it would override the user's choice.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1306 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1307 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1308 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1309 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1310 Lisp_Object sym = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1311 Lisp_Object val = Feval (XCAR (args = XCDR (args)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1312 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1313
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1314 GCPRO1 (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1315
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1316 Fset_default (sym, val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1317
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1318 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1319
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1320 if (!NILP (args = XCDR (args)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1321 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1322 Lisp_Object doc = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1323 Fput (sym, Qvariable_documentation, doc);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1324 if (!NILP (args = XCDR (args)))
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
1325 signal_error (Qwrong_number_of_arguments, "too many arguments", Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1326 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1327
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1328 #ifdef I18N3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1329 if (!NILP (Vfile_domain))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1330 Fput (sym, Qvariable_domain, Vfile_domain);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1331 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1332
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1333 LOADHIST_ATTACH (sym);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1334 return sym;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1335 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1336
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1337 DEFUN ("user-variable-p", Fuser_variable_p, 1, 1, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1338 Return t if VARIABLE is intended to be set and modified by users.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1339 \(The alternative is a variable used internally in a Lisp program.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1340 Determined by whether the first character of the documentation
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1341 for the variable is `*'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1342 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1343 (variable))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1344 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1345 Lisp_Object documentation = Fget (variable, Qvariable_documentation, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1346
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1347 return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1348 ((INTP (documentation) && XINT (documentation) < 0) ||
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1349
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1350 (STRINGP (documentation) &&
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1351 (string_byte (documentation, 0) == '*')) ||
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1352
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1353 /* If (STRING . INTEGER), a negative integer means a user variable. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1354 (CONSP (documentation)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1355 && STRINGP (XCAR (documentation))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1356 && INTP (XCDR (documentation))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1357 && XINT (XCDR (documentation)) < 0)) ?
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1358 Qt : Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1359 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1361 DEFUN ("macroexpand-internal", Fmacroexpand_internal, 1, 2, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1362 Return result of expanding macros at top level of FORM.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1363 If FORM is not a macro call, it is returned unchanged.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1364 Otherwise, the macro is expanded and the expansion is considered
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1365 in place of FORM. When a non-macro-call results, it is returned.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1366
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1367 The second optional arg ENVIRONMENT specifies an environment of macro
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1368 definitions to shadow the loaded ones for use in file byte-compilation.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1369 */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1370 (form, environment))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1371 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1372 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1373 /* With cleanups from Hallvard Furuseth. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1374 REGISTER Lisp_Object expander, sym, def, tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1375
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1376 while (1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1377 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1378 /* Come back here each time we expand a macro call,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1379 in case it expands into another macro call. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1380 if (!CONSP (form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1381 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1382 /* Set SYM, give DEF and TEM right values in case SYM is not a symbol. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1383 def = sym = XCAR (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1384 tem = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1385 /* Trace symbols aliases to other symbols
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1386 until we get a symbol that is not an alias. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1387 while (SYMBOLP (def))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1388 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1389 QUIT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1390 sym = def;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1391 tem = Fassq (sym, environment);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1392 if (NILP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1393 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1394 def = XSYMBOL (sym)->function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1395 if (!UNBOUNDP (def))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1396 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1397 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1398 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1399 }
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1400 /* Right now TEM is the result from SYM in ENVIRONMENT,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1401 and if TEM is nil then DEF is SYM's function definition. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1402 if (NILP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1403 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1404 /* SYM is not mentioned in ENVIRONMENT.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1405 Look at its function definition. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1406 if (UNBOUNDP (def)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1407 || !CONSP (def))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1408 /* Not defined or definition not suitable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1409 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1410 if (EQ (XCAR (def), Qautoload))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1411 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1412 /* Autoloading function: will it be a macro when loaded? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1413 tem = Felt (def, make_int (4));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1414 if (EQ (tem, Qt) || EQ (tem, Qmacro))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1415 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1416 /* Yes, load it and try again. */
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
1417 /* do_autoload GCPROs both arguments */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1418 do_autoload (def, sym);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1419 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1420 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1421 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1422 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1423 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1424 else if (!EQ (XCAR (def), Qmacro))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1425 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1426 else expander = XCDR (def);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1427 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1428 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1429 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1430 expander = XCDR (tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1431 if (NILP (expander))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1432 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1433 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1434 form = apply1 (expander, XCDR (form));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1435 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1436 return form;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1437 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1438
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1439
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1440 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1441 /* Non-local exits */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1442 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1443
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1444 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1445
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1446 int
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1447 proper_redisplay_wrapping_in_place (void)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1448 {
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1449 return !in_display
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1450 || ((get_inhibit_flags () & INTERNAL_INHIBIT_ERRORS)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1451 && (get_inhibit_flags () & INTERNAL_INHIBIT_THROWS));
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1452 }
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1453
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1454 static void
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1455 check_proper_critical_section_nonlocal_exit_protection (void)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1456 {
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1457 assert_with_message
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1458 (proper_redisplay_wrapping_in_place (),
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1459 "Attempted non-local exit from within redisplay without being properly wrapped");
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1460 }
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1461
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1462 static void
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1463 check_proper_critical_section_lisp_protection (void)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1464 {
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1465 assert_with_message
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1466 (proper_redisplay_wrapping_in_place (),
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1467 "Attempt to call Lisp code from within redisplay without being properly wrapped");
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1468 }
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1469
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1470 #endif /* ERROR_CHECK_TRAPPING_PROBLEMS */
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1471
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1472 DEFUN ("catch", Fcatch, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1473 \(catch TAG BODY...): eval BODY allowing nonlocal exits using `throw'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1474 TAG is evalled to get the tag to use. Then the BODY is executed.
2297
13a418960a88 [xemacs-hg @ 2004-09-22 02:05:42 by stephent]
stephent
parents: 2286
diff changeset
1475 Within BODY, (throw TAG) with same (`eq') tag exits BODY and this `catch'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1476 If no throw happens, `catch' returns the value of the last BODY form.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1477 If a throw happens, it specifies the value to return from `catch'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1478 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1479 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1480 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1481 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1482 Lisp_Object tag = Feval (XCAR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1483 Lisp_Object body = XCDR (args);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1484 return internal_catch (tag, Fprogn, body, 0, 0);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1485 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1486
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1487 /* Set up a catch, then call C function FUNC on argument ARG.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1488 FUNC should return a Lisp_Object.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1489 This is how catches are done from within C code. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1490
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1491 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1492 internal_catch (Lisp_Object tag,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1493 Lisp_Object (*func) (Lisp_Object arg),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1494 Lisp_Object arg,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1495 int * volatile threw,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1496 Lisp_Object * volatile thrown_tag)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1497 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1498 /* This structure is made part of the chain `catchlist'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1499 struct catchtag c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1500
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1501 /* Fill in the components of c, and put it on the list. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1502 c.next = catchlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1503 c.tag = tag;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1504 c.actual_tag = Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1505 c.val = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1506 c.backlist = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1507 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1508 /* #### */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1509 c.handlerlist = handlerlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1510 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1511 c.lisp_eval_depth = lisp_eval_depth;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1512 c.pdlcount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1513 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1514 c.poll_suppress_count = async_timer_suppress_count;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1515 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1516 c.gcpro = gcprolist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1517 catchlist = &c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1518
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1519 /* Call FUNC. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1520 if (SETJMP (c.jmp))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1521 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1522 /* Throw works by a longjmp that comes right here. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1523 if (threw) *threw = 1;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1524 if (thrown_tag) *thrown_tag = c.actual_tag;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1525 return c.val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1526 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1527 c.val = (*func) (arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1528 if (threw) *threw = 0;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1529 if (thrown_tag) *thrown_tag = Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1530 catchlist = c.next;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1531 check_catchlist_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1532 return c.val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1533 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1534
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1535
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1536 /* Unwind the specbind, catch, and handler stacks back to CATCH, and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1537 jump to that CATCH, returning VALUE as the value of that catch.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1538
2297
13a418960a88 [xemacs-hg @ 2004-09-22 02:05:42 by stephent]
stephent
parents: 2286
diff changeset
1539 This is the guts of Fthrow and Fsignal; they differ only in the
13a418960a88 [xemacs-hg @ 2004-09-22 02:05:42 by stephent]
stephent
parents: 2286
diff changeset
1540 way they choose the catch tag to throw to. A catch tag for a
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1541 condition-case form has a TAG of Qnil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1542
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1543 Before each catch is discarded, unbind all special bindings and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1544 execute all unwind-protect clauses made above that catch. Unwind
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1545 the handler stack as we go, so that the proper handlers are in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1546 effect for each unwind-protect clause we run. At the end, restore
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1547 some static info saved in CATCH, and longjmp to the location
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1548 specified in the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1549
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1550 This is used for correct unwinding in Fthrow and Fsignal. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1551
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1552 static DECLARE_DOESNT_RETURN (unwind_to_catch (struct catchtag *, Lisp_Object,
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1553 Lisp_Object));
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1554
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1555 static DOESNT_RETURN
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1556 unwind_to_catch (struct catchtag *c, Lisp_Object val, Lisp_Object tag)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1557 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1558 REGISTER int last_time;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1559
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1560 /* Unwind the specbind, catch, and handler stacks back to CATCH
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1561 Before each catch is discarded, unbind all special bindings
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1562 and execute all unwind-protect clauses made above that catch.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1563 At the end, restore some static info saved in CATCH,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1564 and longjmp to the location specified.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1565 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1566
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1567 /* Save the value somewhere it will be GC'ed.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1568 (Can't overwrite tag slot because an unwind-protect may
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1569 want to throw to this same tag, which isn't yet invalid.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1570 c->val = val;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1571 c->actual_tag = tag;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1572
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1573 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1574 /* Restore the polling-suppression count. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1575 set_poll_suppress_count (catch->poll_suppress_count);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1576 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1577
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1578 #if 1
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1579 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1580 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1581 last_time = catchlist == c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1582
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1583 /* Unwind the specpdl stack, and then restore the proper set of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1584 handlers. */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1585 unbind_to (catchlist->pdlcount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1586 catchlist = catchlist->next;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1587 check_catchlist_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1588 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1589 while (! last_time);
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1590 #else
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1591 /* Former XEmacs code. This is definitely not as correct because
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1592 there may be a number of catches we're unwinding, and a number
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1593 of unwind-protects in the process. By not undoing the catches till
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1594 the end, there may be invalid catches still current. (This would
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1595 be a particular problem with code like this:
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1596
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1597 (catch 'foo
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1598 (call-some-code-which-does...
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1599 (catch 'bar
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1600 (unwind-protect
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1601 (call-some-code-which-does...
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1602 (catch 'bar
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1603 (call-some-code-which-does...
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1604 (throw 'foo nil))))
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1605 (throw 'bar nil)))))
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1606
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1607 This would try to throw to the inner (catch 'bar)!
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1608
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1609 --ben
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1610 */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1611 /* Unwind the specpdl stack */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1612 unbind_to (c->pdlcount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1613 catchlist = c->next;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1614 check_catchlist_sanity ();
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1615 #endif /* Former code */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1616
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
1617 UNWIND_GCPRO_TO (c->gcpro);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1618 if (profiling_active)
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1619 {
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1620 while (backtrace_list != c->backlist)
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1621 {
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1622 profile_record_unwind (backtrace_list);
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1623 backtrace_list = backtrace_list->next;
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1624 }
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1625 }
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1626 else
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1627 backtrace_list = c->backlist;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1628 lisp_eval_depth = c->lisp_eval_depth;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1629
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1630 #ifdef DEFEND_AGAINST_THROW_RECURSION
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1631 throw_level = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1632 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1633 LONGJMP (c->jmp, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1634 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1635
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1636 static DECLARE_DOESNT_RETURN (throw_or_bomb_out (Lisp_Object, Lisp_Object, int,
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1637 Lisp_Object, Lisp_Object));
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1638
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1639 static DOESNT_RETURN
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1640 throw_or_bomb_out (Lisp_Object tag, Lisp_Object val, int bomb_out_p,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1641 Lisp_Object sig, Lisp_Object data)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1642 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1643 #ifdef DEFEND_AGAINST_THROW_RECURSION
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1644 /* die if we recurse more than is reasonable */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1645 if (++throw_level > 20)
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
1646 abort ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1647 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1648
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1649 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
1650 check_proper_critical_section_nonlocal_exit_protection ();
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
1651 #endif
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
1652
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1653 /* If bomb_out_p is t, this is being called from Fsignal as a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1654 "last resort" when there is no handler for this error and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1655 the debugger couldn't be invoked, so we are throwing to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1656 'top-level. If this tag doesn't exist (happens during the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1657 initialization stages) we would get in an infinite recursive
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1658 Fsignal/Fthrow loop, so instead we bomb out to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1659 really-early-error-handler.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1660
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1661 Note that in fact the only time that the "last resort"
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1662 occurs is when there's no catch for 'top-level -- the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1663 'top-level catch and the catch-all error handler are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1664 established at the same time, in initial_command_loop/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1665 top_level_1.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1666
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1667 [[#### Fix this horrifitude!]]
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1668
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1669 I don't think this is horrifitude, just defensive programming. --ben
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1670 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1671
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1672 while (1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1673 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1674 REGISTER struct catchtag *c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1675
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1676 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1677 if (!NILP (tag)) /* #### */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1678 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1679 for (c = catchlist; c; c = c->next)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1680 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1681 if (EQ (c->tag, tag) || EQ (c->tag, Vcatch_everything_tag))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1682 unwind_to_catch (c, val, tag);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1683 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1684 if (!bomb_out_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1685 tag = Fsignal (Qno_catch, list2 (tag, val));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1686 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1687 call1 (Qreally_early_error_handler, Fcons (sig, data));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1688 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1689 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1690
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1691 /* See above, where CATCHLIST is defined, for a description of how
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1692 Fthrow() works.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1693
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1694 Fthrow() is also called by Fsignal(), to do a non-local jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1695 back to the appropriate condition-case handler after (maybe)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1696 the debugger is entered. In that case, TAG is the value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1697 of Vcondition_handlers that was in place just after the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1698 condition-case handler was set up. The car of this will be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1699 some data referring to the handler: Its car will be Qunbound
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1700 (thus, this tag can never be generated by Lisp code), and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1701 its CDR will be the HANDLERS argument to condition_case_1()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1702 (either Qerror, Qt, or a list of handlers as in `condition-case').
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1703 This works fine because Fthrow() does not care what TAG was
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1704 passed to it: it just looks up the catch list for something
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1705 that is EQ() to TAG. When it finds it, it will longjmp()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1706 back to the place that established the catch (in this case,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1707 condition_case_1). See below for more info.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1708 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1709
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1710 DEFUN_NORETURN ("throw", Fthrow, 2, 2, 0, /*
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
1711 Throw to the catch for TAG and return VALUE from it.
2297
13a418960a88 [xemacs-hg @ 2004-09-22 02:05:42 by stephent]
stephent
parents: 2286
diff changeset
1712 Both TAG and VALUE are evalled. Tags are the same iff they are `eq'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1713 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
1714 (tag, value))
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
1715 {
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
1716 throw_or_bomb_out (tag, value, 0, Qnil, Qnil); /* Doesn't return */
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
1717 RETURN_NOT_REACHED (Qnil);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1718 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1719
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1720 DEFUN ("unwind-protect", Funwind_protect, 1, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1721 Do BODYFORM, protecting with UNWINDFORMS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1722 Usage looks like (unwind-protect BODYFORM UNWINDFORMS...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1723 If BODYFORM completes normally, its value is returned
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1724 after executing the UNWINDFORMS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1725 If BODYFORM exits nonlocally, the UNWINDFORMS are executed anyway.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1726 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1727 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1728 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1729 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1730 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1731
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1732 record_unwind_protect (Fprogn, XCDR (args));
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1733 return unbind_to_1 (speccount, Feval (XCAR (args)));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1734 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1735
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1736
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1737 /************************************************************************/
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
1738 /* Trapping errors */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1739 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1740
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1741 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1742 condition_bind_unwind (Lisp_Object loser)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1743 {
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1744 /* There is no problem freeing stuff here like there is in
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1745 condition_case_unwind(), because there are no outside pointers
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1746 (like the tag below in the catchlist) pointing to the objects. */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1747
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1748 /* ((handler-fun . handler-args) ... other handlers) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1749 Lisp_Object tem = XCAR (loser);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1750 int first = 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1751
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1752 while (CONSP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1753 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1754 Lisp_Object victim = tem;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1755 if (first && OPAQUE_PTRP (XCAR (victim)))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1756 free_opaque_ptr (XCAR (victim));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1757 first = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1758 tem = XCDR (victim);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1759 free_cons (victim);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1760 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1761
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1762 if (EQ (loser, Vcondition_handlers)) /* may have been rebound to some tail */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1763 Vcondition_handlers = XCDR (loser);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1764
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1765 free_cons (loser);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1766 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1767 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1768
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1769 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1770 condition_case_unwind (Lisp_Object loser)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1771 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1772 /* ((<unbound> . clauses) ... other handlers */
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1773 /* NO! Doing this now leaves the tag deleted in a still-active
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1774 catch. With the recent changes to unwind_to_catch(), the
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1775 evil situation might not happen any more; it certainly could
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1776 happen before because it did. But it's very precarious to rely
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1777 on something like this. #### Instead we should rewrite, adopting
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1778 the FSF's mechanism with a struct handler instead of
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1779 Vcondition_handlers; then we have NO Lisp-object structures used
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1780 to hold all of the values, and there's no possibility either of
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1781 crashes from freeing objects too quickly, or objects not getting
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1782 freed and hanging around till the next GC.
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1783
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1784 In practice, the extra consing here should not matter because
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1785 it only happens when we throw past the condition-case, which almost
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1786 always is the result of an error. Most of the time, there will be
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1787 no error, and we will free the objects below in the main function.
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1788
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1789 --ben
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1790
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1791 DO NOT DO: free_cons (XCAR (loser));
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1792 */
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1793
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1794 if (EQ (loser, Vcondition_handlers)) /* may have been rebound to some tail */
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1795 Vcondition_handlers = XCDR (loser);
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1796
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1797 /* DO NOT DO: free_cons (loser); */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1798 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1799 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1800
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1801 /* Split out from condition_case_3 so that primitive C callers
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1802 don't have to cons up a lisp handler form to be evaluated. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1803
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1804 /* Call a function BFUN of one argument BARG, trapping errors as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1805 specified by HANDLERS. If no error occurs that is indicated by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1806 HANDLERS as something to be caught, the return value of this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1807 function is the return value from BFUN. If such an error does
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1808 occur, HFUN is called, and its return value becomes the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1809 return value of condition_case_1(). The second argument passed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1810 to HFUN will always be HARG. The first argument depends on
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1811 HANDLERS:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1812
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1813 If HANDLERS is Qt, all errors (this includes QUIT, but not
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1814 non-local exits with `throw') cause HFUN to be invoked, and VAL
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1815 (the first argument to HFUN) is a cons (SIG . DATA) of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1816 arguments passed to `signal'. The debugger is not invoked even if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1817 `debug-on-error' was set.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1818
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1819 A HANDLERS value of Qerror is the same as Qt except that the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1820 debugger is invoked if `debug-on-error' was set.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1821
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1822 Otherwise, HANDLERS should be a list of lists (CONDITION-NAME BODY ...)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1823 exactly as in `condition-case', and errors will be trapped
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1824 as indicated in HANDLERS. VAL (the first argument to HFUN) will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1825 be a cons whose car is the cons (SIG . DATA) and whose CDR is the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1826 list (BODY ...) from the appropriate slot in HANDLERS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1827
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1828 This function pushes HANDLERS onto the front of Vcondition_handlers
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1829 (actually with a Qunbound marker as well -- see Fthrow() above
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1830 for why), establishes a catch whose tag is this new value of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1831 Vcondition_handlers, and calls BFUN. When Fsignal() is called,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1832 it calls Fthrow(), setting TAG to this same new value of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1833 Vcondition_handlers and setting VAL to the same thing that will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1834 be passed to HFUN, as above. Fthrow() longjmp()s back to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1835 jump point we just established, and we in turn just call the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1836 HFUN and return its value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1837
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1838 For a real condition-case, HFUN will always be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1839 run_condition_case_handlers() and HARG is the argument VAR
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1840 to condition-case. That function just binds VAR to the cons
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1841 (SIG . DATA) that is the CAR of VAL, and calls the handler
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1842 (BODY ...) that is the CDR of VAL. Note that before calling
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1843 Fthrow(), Fsignal() restored Vcondition_handlers to the value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1844 it had *before* condition_case_1() was called. This maintains
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1845 consistency (so that the state of things at exit of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1846 condition_case_1() is the same as at entry), and implies
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1847 that the handler can signal the same error again (possibly
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1848 after processing of its own), without getting in an infinite
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1849 loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1850
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1851 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1852 condition_case_1 (Lisp_Object handlers,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1853 Lisp_Object (*bfun) (Lisp_Object barg),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1854 Lisp_Object barg,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1855 Lisp_Object (*hfun) (Lisp_Object val, Lisp_Object harg),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1856 Lisp_Object harg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1857 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1858 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1859 struct catchtag c;
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1860 struct gcpro gcpro1, gcpro2, gcpro3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1861
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1862 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1863 c.tag = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1864 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1865 /* Do consing now so out-of-memory error happens up front */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1866 /* (unbound . stuff) is a special condition-case kludge marker
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1867 which is known specially by Fsignal.
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1868 [[ This is an abomination, but to fix it would require either
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1869 making condition_case cons (a union of the conditions of the clauses)
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1870 or changing the byte-compiler output (no thanks).]]
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1871
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1872 The above comment is clearly wrong. FSF does not do it this way
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1873 and did not change the byte-compiler output. Instead they use a
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1874 `struct handler' to hold the various values (in place of our
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1875 Vcondition_handlers) and chain them together, with pointers from
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1876 the `struct catchtag' to the `struct handler'. We should perhaps
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1877 consider moving to something similar, but not before I merge my
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1878 stderr-proc workspace, which contains changes to these
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1879 functions. --ben */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1880 c.tag = noseeum_cons (noseeum_cons (Qunbound, handlers),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1881 Vcondition_handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1882 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1883 c.val = Qnil;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1884 c.actual_tag = Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1885 c.backlist = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1886 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1887 /* #### */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1888 c.handlerlist = handlerlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1889 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1890 c.lisp_eval_depth = lisp_eval_depth;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1891 c.pdlcount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1892 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1893 c.poll_suppress_count = async_timer_suppress_count;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1894 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1895 c.gcpro = gcprolist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1896 /* #### FSFmacs does the following statement *after* the setjmp(). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1897 c.next = catchlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1898
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1899 if (SETJMP (c.jmp))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1900 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1901 /* throw does ungcpro, etc */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1902 return (*hfun) (c.val, harg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1903 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1904
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1905 record_unwind_protect (condition_case_unwind, c.tag);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1906
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1907 catchlist = &c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1908 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1909 h.handler = handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1910 h.var = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1911 h.next = handlerlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1912 h.tag = &c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1913 handlerlist = &h;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1914 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1915 Vcondition_handlers = c.tag;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1916 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1917 GCPRO1 (harg); /* Somebody has to gc-protect */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1918 c.val = ((*bfun) (barg));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1919 UNGCPRO;
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1920
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1921 /* Once we change `catchlist' below, the stuff in c will not be GCPRO'd. */
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1922 GCPRO3 (harg, c.val, c.tag);
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1923
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1924 catchlist = c.next;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1925 check_catchlist_sanity ();
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1926 /* Note: The unbind also resets Vcondition_handlers. Maybe we should
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1927 delete this here. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1928 Vcondition_handlers = XCDR (c.tag);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1929 unbind_to (speccount);
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1930
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1931 UNGCPRO;
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1932 /* free the conses *after* the unbind, because the unbind will run
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1933 condition_case_unwind above. */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1934 free_cons (XCAR (c.tag));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
1935 free_cons (c.tag);
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
1936 return c.val;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1937 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1938
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1939 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1940 run_condition_case_handlers (Lisp_Object val, Lisp_Object var)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1941 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1942 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1943 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1944 if (!NILP (h.var))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1945 specbind (h.var, c.val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1946 val = Fprogn (Fcdr (h.chosen_clause));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1947
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1948 /* Note that this just undoes the binding of h.var; whoever
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1949 longjmp()ed to us unwound the stack to c.pdlcount before
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1950 throwing. */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1951 unbind_to (c.pdlcount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1952 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1953 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1954 int speccount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1956 CHECK_TRUE_LIST (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1957 if (NILP (var))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1958 return Fprogn (Fcdr (val)); /* tail call */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1959
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1960 speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1961 specbind (var, Fcar (val));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1962 val = Fprogn (Fcdr (val));
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
1963 return unbind_to_1 (speccount, val);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1964 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1965 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1966
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1967 /* Here for bytecode to call non-consfully. This is exactly like
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1968 condition-case except that it takes three arguments rather
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1969 than a single list of arguments. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1970 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1971 condition_case_3 (Lisp_Object bodyform, Lisp_Object var, Lisp_Object handlers)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1972 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1973 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1974 EXTERNAL_LIST_LOOP_2 (handler, handlers)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1975 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1976 if (NILP (handler))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1977 ;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1978 else if (CONSP (handler))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1979 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1980 Lisp_Object conditions = XCAR (handler);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1981 /* CONDITIONS must a condition name or a list of condition names */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1982 if (SYMBOLP (conditions))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1983 ;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1984 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1985 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1986 EXTERNAL_LIST_LOOP_2 (condition, conditions)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1987 if (!SYMBOLP (condition))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1988 goto invalid_condition_handler;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1989 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1990 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1991 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1992 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1993 invalid_condition_handler:
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
1994 sferror ("Invalid condition handler", handler);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1995 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1996 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1997
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1998 CHECK_SYMBOL (var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1999
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2000 return condition_case_1 (handlers,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2001 Feval, bodyform,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2002 run_condition_case_handlers,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2003 var);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2004 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2005
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2006 DEFUN ("condition-case", Fcondition_case, 2, UNEVALLED, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2007 Regain control when an error is signalled.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2008 Usage looks like (condition-case VAR BODYFORM HANDLERS...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2009 Executes BODYFORM and returns its value if no error happens.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2010 Each element of HANDLERS looks like (CONDITION-NAME BODY...)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2011 where the BODY is made of Lisp expressions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2012
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2013 A typical usage of `condition-case' looks like this:
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2014
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2015 (condition-case nil
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2016 ;; you need a progn here if you want more than one statement ...
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2017 (progn
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2018 (do-something)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2019 (do-something-else))
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2020 (error
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2021 (issue-warning-or)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2022 ;; but strangely, you don't need one here.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2023 (return-a-value-etc)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2024 ))
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2025
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2026 A handler is applicable to an error if CONDITION-NAME is one of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2027 error's condition names. If an error happens, the first applicable
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2028 handler is run. As a special case, a CONDITION-NAME of t matches
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2029 all errors, even those without the `error' condition name on them
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2030 \(e.g. `quit').
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2031
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2032 The car of a handler may be a list of condition names
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2033 instead of a single condition name.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2034
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2035 When a handler handles an error,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2036 control returns to the condition-case and the handler BODY... is executed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2037 with VAR bound to (SIGNALED-CONDITIONS . SIGNAL-DATA).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2038 VAR may be nil; then you do not get access to the signal information.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2039
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2040 The value of the last BODY form is returned from the condition-case.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2041 See also the function `signal' for more info.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2042
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2043 Note that at the time the condition handler is invoked, the Lisp stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2044 and the current catches, condition-cases, and bindings have all been
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2045 popped back to the state they were in just before the call to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2046 `condition-case'. This means that resignalling the error from
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2047 within the handler will not result in an infinite loop.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2048
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2049 If you want to establish an error handler that is called with the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2050 Lisp stack, bindings, etc. as they were when `signal' was called,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2051 rather than when the handler was set, use `call-with-condition-handler'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2052 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2053 (args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2054 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2055 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2056 Lisp_Object var = XCAR (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2057 Lisp_Object bodyform = XCAR (XCDR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2058 Lisp_Object handlers = XCDR (XCDR (args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2059 return condition_case_3 (bodyform, var, handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2060 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2061
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2062 DEFUN ("call-with-condition-handler", Fcall_with_condition_handler, 2, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2063 Regain control when an error is signalled, without popping the stack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2064 Usage looks like (call-with-condition-handler HANDLER FUNCTION &rest ARGS).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2065 This function is similar to `condition-case', but the handler is invoked
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2066 with the same environment (Lisp stack, bindings, catches, condition-cases)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2067 that was current when `signal' was called, rather than when the handler
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2068 was established.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2069
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2070 HANDLER should be a function of one argument, which is a cons of the args
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2071 \(SIG . DATA) that were passed to `signal'. It is invoked whenever
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2072 `signal' is called (this differs from `condition-case', which allows
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2073 you to specify which errors are trapped). If the handler function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2074 returns, `signal' continues as if the handler were never invoked.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2075 \(It continues to look for handlers established earlier than this one,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2076 and invokes the standard error-handler if none is found.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2077 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2078 (int nargs, Lisp_Object *args)) /* Note! Args side-effected! */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2079 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2080 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2081 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2082 Lisp_Object tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2083
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2084 tem = Ffunction_max_args (args[0]);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2085 if (! (XINT (Ffunction_min_args (args[0])) <= 1
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2086 && (NILP (tem) || 1 <= XINT (tem))))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2087 invalid_argument ("Must be function of one argument", args[0]);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2088
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2089 /* (handler-fun . handler-args) but currently there are no handler-args */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2090 tem = noseeum_cons (list1 (args[0]), Vcondition_handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2091 record_unwind_protect (condition_bind_unwind, tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2092 Vcondition_handlers = tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2093
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2094 /* Caller should have GC-protected args */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2095 return unbind_to_1 (speccount, Ffuncall (nargs - 1, args + 1));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2096 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2097
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2098 /* This is the C version of the above function. It calls FUN, passing it
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2099 ARG, first setting up HANDLER to catch signals in the environment in
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2100 which they were signalled. (HANDLER is only invoked if there was no
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2101 handler (either from condition-case or call-with-condition-handler) set
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2102 later on that handled the signal; therefore, this is a real error.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2103
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2104 HANDLER is invoked with three arguments: the ERROR-SYMBOL and DATA as
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2105 passed to `signal', and HANDLER_ARG. Originally I made HANDLER_ARG and
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2106 ARG be void * to facilitate passing structures, but I changed to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2107 Lisp_Objects because all the other C interfaces to catch/condition-case/etc.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2108 take Lisp_Objects, and it is easy enough to use make_opaque_ptr() et al.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2109 to convert between Lisp_Objects and structure pointers. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2110
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2111 Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2112 call_with_condition_handler (Lisp_Object (*handler) (Lisp_Object, Lisp_Object,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2113 Lisp_Object),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2114 Lisp_Object handler_arg,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2115 Lisp_Object (*fun) (Lisp_Object),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2116 Lisp_Object arg)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2117 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2118 /* This function can GC */
1111
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
2119 int speccount = specpdl_depth ();
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2120 Lisp_Object tem;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2121
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2122 /* ((handler-fun . (handler-arg . nil)) ... ) */
1111
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
2123 tem = noseeum_cons (noseeum_cons (make_opaque_ptr ((void *) handler),
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2124 noseeum_cons (handler_arg, Qnil)),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2125 Vcondition_handlers);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2126 record_unwind_protect (condition_bind_unwind, tem);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2127 Vcondition_handlers = tem;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2128
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2129 return unbind_to_1 (speccount, (*fun) (arg));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2130 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2131
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2132 static int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2133 condition_type_p (Lisp_Object type, Lisp_Object conditions)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2134 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2135 if (EQ (type, Qt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2136 /* (condition-case c # (t c)) catches -all- signals
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2137 * Use with caution! */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2138 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2139
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2140 if (SYMBOLP (type))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2141 return !NILP (Fmemq (type, conditions));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2142
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2143 for (; CONSP (type); type = XCDR (type))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2144 if (!NILP (Fmemq (XCAR (type), conditions)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2145 return 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2146
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2147 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2148 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2149
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2150 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2151 return_from_signal (Lisp_Object value)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2152 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2153 #if 1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2154 /* Most callers are not prepared to handle gc if this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2155 returns. So, since this feature is not very useful,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2156 take it out. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2157 /* Have called debugger; return value to signaller */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2158 return value;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2159 #else /* But the reality is that that stinks, because: */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2160 /* GACK!!! Really want some way for debug-on-quit errors
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2161 to be continuable!! */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2162 signal_error (Qunimplemented,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2163 "Returning a value from an error is no longer supported",
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2164 Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2165 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2166 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2167
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2168
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2169 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2170 /* the workhorse error-signaling function */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2171 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2172
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2173 /* This exists only for debugging purposes, as a place to put a breakpoint
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2174 that won't get signalled for errors occurring when
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2175 call_with_suspended_errors() was invoked. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2176
872
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
2177 /* Don't make static or it might be compiled away */
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
2178 void signal_1 (void);
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
2179
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
2180 void
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2181 signal_1 (void)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2182 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2183 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2184
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2185 /* #### This function has not been synched with FSF. It diverges
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2186 significantly. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2187
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2188 /* The simplest external error function: it would be called
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2189 signal_continuable_error() in the terminology below, but it's
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2190 Lisp-callable. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2191
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2192 DEFUN ("signal", Fsignal, 2, 2, 0, /*
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2193 Signal a continuable error. Args are ERROR-SYMBOL, and associated DATA.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2194 An error symbol is a symbol defined using `define-error'.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2195 DATA should be a list. Its elements are printed as part of the error message.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2196 If the signal is handled, DATA is made available to the handler.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2197 See also the function `signal-error', and the functions to handle errors:
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2198 `condition-case' and `call-with-condition-handler'.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2199
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2200 Note that this function can return, if the debugger is invoked and the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2201 user invokes the "return from signal" option.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2202 */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2203 (error_symbol, data))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2204 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2205 /* This function can GC */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2206 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2207 Lisp_Object conditions = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2208 Lisp_Object handlers = Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2209 /* signal_call_debugger() could get called more than once
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2210 (once when a call-with-condition-handler is about to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2211 be dealt with, and another when a condition-case handler
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2212 is about to be invoked). So make sure the debugger and/or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2213 stack trace aren't done more than once. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2214 int stack_trace_displayed = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2215 int debugger_entered = 0;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2216
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2217 /* Fsignal() is one of these functions that's called all the time
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2218 with newly-created Lisp objects. We allow this; but we must GC-
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2219 protect the objects because all sorts of weird stuff could
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2220 happen. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2221
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2222 GCPRO4 (conditions, handlers, error_symbol, data);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2223
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2224 if (!(inhibit_flags & CALL_WITH_SUSPENDED_ERRORS))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2225 signal_1 ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2226
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2227 if (!initialized)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2228 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2229 /* who knows how much has been initialized? Safest bet is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2230 just to bomb out immediately. */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2231 stderr_out ("Error before initialization is complete!\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2232 abort ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2233 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2234
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2235 assert (!gc_in_progress);
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2236
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2237 /* We abort if in_display and we are not protected, as garbage
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2238 collections and non-local exits will invariably be fatal, but in
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2239 messy, difficult-to-debug ways. See enter_redisplay_critical_section().
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2240 */
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2241
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
2242 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
2243 check_proper_critical_section_nonlocal_exit_protection ();
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
2244 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2245
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2246 conditions = Fget (error_symbol, Qerror_conditions, Qnil);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2247
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2248 for (handlers = Vcondition_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2249 CONSP (handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2250 handlers = XCDR (handlers))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2251 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2252 Lisp_Object handler_fun = XCAR (XCAR (handlers));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2253 Lisp_Object handler_data = XCDR (XCAR (handlers));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2254 Lisp_Object outer_handlers = XCDR (handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2255
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2256 if (!UNBOUNDP (handler_fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2257 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2258 /* call-with-condition-handler */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2259 Lisp_Object tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2260 Lisp_Object all_handlers = Vcondition_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2261 struct gcpro ngcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2262 NGCPRO1 (all_handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2263 Vcondition_handlers = outer_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2264
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2265 tem = signal_call_debugger (conditions, error_symbol, data,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2266 outer_handlers, 1,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2267 &stack_trace_displayed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2268 &debugger_entered);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2269 if (!UNBOUNDP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2270 RETURN_NUNGCPRO (return_from_signal (tem));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2271
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2272 if (OPAQUE_PTRP (handler_fun))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2273 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2274 if (NILP (handler_data))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2275 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2276 Lisp_Object (*hfun) (Lisp_Object, Lisp_Object) =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2277 (Lisp_Object (*) (Lisp_Object, Lisp_Object))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2278 (get_opaque_ptr (handler_fun));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2279
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2280 tem = (*hfun) (error_symbol, data);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2281 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2282 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2283 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2284 Lisp_Object (*hfun) (Lisp_Object, Lisp_Object, Lisp_Object) =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2285 (Lisp_Object (*) (Lisp_Object, Lisp_Object, Lisp_Object))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2286 (get_opaque_ptr (handler_fun));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2287
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2288 assert (NILP (XCDR (handler_data)));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2289 tem = (*hfun) (error_symbol, data, XCAR (handler_data));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2290 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2291 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2292 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2293 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2294 tem = Fcons (error_symbol, data);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2295 if (NILP (handler_data))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2296 tem = call1 (handler_fun, tem);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2297 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2298 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2299 /* (This code won't be used (for now?).) */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2300 struct gcpro nngcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2301 Lisp_Object args[3];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2302 NNGCPRO1 (args[0]);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2303 nngcpro1.nvars = 3;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2304 args[0] = handler_fun;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2305 args[1] = tem;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2306 args[2] = handler_data;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2307 nngcpro1.var = args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2308 tem = Fapply (3, args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2309 NNUNGCPRO;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2310 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2311 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2312 NUNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2313 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2314 if (!EQ (tem, Qsignal))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2315 return return_from_signal (tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2316 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2317 /* If handler didn't throw, try another handler */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2318 Vcondition_handlers = all_handlers;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2319 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2320
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2321 /* It's a condition-case handler */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2323 /* t is used by handlers for all conditions, set up by C code.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2324 * debugger is not called even if debug_on_error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2325 else if (EQ (handler_data, Qt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2326 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2327 UNGCPRO;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2328 return Fthrow (handlers, Fcons (error_symbol, data));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2329 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2330 /* `error' is used similarly to the way `t' is used, but in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2331 addition it invokes the debugger if debug_on_error.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2332 This is normally used for the outer command-loop error
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2333 handler. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2334 else if (EQ (handler_data, Qerror))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2335 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2336 Lisp_Object tem = signal_call_debugger (conditions, error_symbol,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2337 data,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2338 outer_handlers, 0,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2339 &stack_trace_displayed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2340 &debugger_entered);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2341
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2342 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2343 if (!UNBOUNDP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2344 return return_from_signal (tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2345
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2346 tem = Fcons (error_symbol, data);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2347 return Fthrow (handlers, tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2348 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2349 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2350 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2351 /* handler established by real (Lisp) condition-case */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2352 Lisp_Object h;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2353
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2354 for (h = handler_data; CONSP (h); h = Fcdr (h))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2355 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2356 Lisp_Object clause = Fcar (h);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2357 Lisp_Object tem = Fcar (clause);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2358
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2359 if (condition_type_p (tem, conditions))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2360 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2361 tem = signal_call_debugger (conditions, error_symbol, data,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2362 outer_handlers, 1,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2363 &stack_trace_displayed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2364 &debugger_entered);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2365 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2366 if (!UNBOUNDP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2367 return return_from_signal (tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2368
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2369 /* Doesn't return */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2370 tem = Fcons (Fcons (error_symbol, data), Fcdr (clause));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2371 return Fthrow (handlers, tem);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2372 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2373 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2374 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2375 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2376
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2377 /* If no handler is present now, try to run the debugger,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2378 and if that fails, throw to top level.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2379
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2380 #### The only time that no handler is present is during
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2381 temacs or perhaps very early in XEmacs. In both cases,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2382 there is no 'top-level catch. (That's why the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2383 "bomb-out" hack was added.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2384
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2385 [[#### Fix this horrifitude!]]
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2386
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2387 I don't think this is horrifitude, but just defensive coding. --ben */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2388
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2389 signal_call_debugger (conditions, error_symbol, data, Qnil, 0,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2390 &stack_trace_displayed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2391 &debugger_entered);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2392 UNGCPRO;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2393 throw_or_bomb_out (Qtop_level, Qt, 1, error_symbol,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2394 data); /* Doesn't return */
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
2395 RETURN_NOT_REACHED (Qnil);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2396 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2397
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2398 /****************** Error functions class 1 ******************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2399
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2400 /* Class 1: General functions that signal an error.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2401 These functions take an error type and a list of associated error
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2402 data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2403
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2404 /* No signal_continuable_error_1(); it's called Fsignal(). */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2405
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2406 /* Signal a non-continuable error. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2407
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2408 DOESNT_RETURN
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2409 signal_error_1 (Lisp_Object sig, Lisp_Object data)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2410 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2411 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2412 Fsignal (sig, data);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2413 }
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2414
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2415 #ifdef ERROR_CHECK_CATCH
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2416
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2417 void
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2418 check_catchlist_sanity (void)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2419 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2420 #if 0
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2421 /* vou me tomar no cu! i just masked andy's missing-unbind
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2422 bug! */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2423 struct catchtag *c;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2424 int found_error_tag = 0;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2425
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2426 for (c = catchlist; c; c = c->next)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2427 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2428 if (EQ (c->tag, Qunbound_suspended_errors_tag))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2429 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2430 found_error_tag = 1;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2431 break;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2432 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2433 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2434
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2435 assert (found_error_tag || NILP (Vcurrent_error_state));
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2436 #endif /* vou me tomar no cul */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2437 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2438
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2439 void
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2440 check_specbind_stack_sanity (void)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2441 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2442 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2443
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2444 #endif /* ERROR_CHECK_CATCH */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2445
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2446 /* Signal a non-continuable error or display a warning or do nothing,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2447 according to ERRB. CLASS is the class of warning and should
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2448 refer to what sort of operation is being done (e.g. Qtoolbar,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2449 Qresource, etc.). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2450
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2451 void
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2452 maybe_signal_error_1 (Lisp_Object sig, Lisp_Object data, Lisp_Object class_,
578
190b164ddcac [xemacs-hg @ 2001-05-25 11:26:50 by ben]
ben
parents: 563
diff changeset
2453 Error_Behavior errb)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2454 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2455 if (ERRB_EQ (errb, ERROR_ME_NOT))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2456 return;
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
2457 else if (ERRB_EQ (errb, ERROR_ME_DEBUG_WARN))
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2458 warn_when_safe_lispobj (class_, Qdebug, Fcons (sig, data));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2459 else if (ERRB_EQ (errb, ERROR_ME_WARN))
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2460 warn_when_safe_lispobj (class_, Qwarning, Fcons (sig, data));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2461 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2462 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2463 Fsignal (sig, data);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2464 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2465
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2466 /* Signal a continuable error or display a warning or do nothing,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2467 according to ERRB. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2468
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2469 Lisp_Object
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2470 maybe_signal_continuable_error_1 (Lisp_Object sig, Lisp_Object data,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2471 Lisp_Object class_, Error_Behavior errb)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2472 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2473 if (ERRB_EQ (errb, ERROR_ME_NOT))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2474 return Qnil;
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
2475 else if (ERRB_EQ (errb, ERROR_ME_DEBUG_WARN))
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
2476 {
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2477 warn_when_safe_lispobj (class_, Qdebug, Fcons (sig, data));
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
2478 return Qnil;
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
2479 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2480 else if (ERRB_EQ (errb, ERROR_ME_WARN))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2481 {
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2482 warn_when_safe_lispobj (class_, Qwarning, Fcons (sig, data));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2483 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2484 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2485 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2486 return Fsignal (sig, data);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2487 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2488
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2489
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2490 /****************** Error functions class 2 ******************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2491
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2492 /* Class 2: Signal an error with a string and an associated object.
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2493 Normally these functions are used to attach one associated object,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2494 but to attach no objects, specify Qunbound for FROB, and for more
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2495 than one object, make a list of the objects with Qunbound as the
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2496 first element. (If you have specifically two objects to attach,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2497 consider using the function in class 3 below.) These functions
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2498 signal an error of a specified type, whose data is one or more
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2499 objects (usually two), a string the related Lisp object(s)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2500 specified as FROB. */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2501
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2502 /* Out of REASON and FROB, return a list of elements suitable for passing
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2503 to signal_error_1(). */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2504
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2505 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2506 build_error_data (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2507 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2508 if (EQ (frob, Qunbound))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2509 frob = Qnil;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2510 else if (CONSP (frob) && EQ (XCAR (frob), Qunbound))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2511 frob = XCDR (frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2512 else
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2513 frob = list1 (frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2514 if (!reason)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2515 return frob;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2516 else
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2517 return Fcons (build_msg_string (reason), frob);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2518 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2519
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2520 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2521 signal_error (Lisp_Object type, const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2522 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2523 signal_error_1 (type, build_error_data (reason, frob));
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2524 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2525
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2526 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2527 maybe_signal_error (Lisp_Object type, const CIbyte *reason,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2528 Lisp_Object frob, Lisp_Object class_,
578
190b164ddcac [xemacs-hg @ 2001-05-25 11:26:50 by ben]
ben
parents: 563
diff changeset
2529 Error_Behavior errb)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2530 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2531 /* Optimization: */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2532 if (ERRB_EQ (errb, ERROR_ME_NOT))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2533 return;
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2534 maybe_signal_error_1 (type, build_error_data (reason, frob), class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2535 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2536
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2537 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2538 signal_continuable_error (Lisp_Object type, const CIbyte *reason,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2539 Lisp_Object frob)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2540 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2541 return Fsignal (type, build_error_data (reason, frob));
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2542 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2543
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2544 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2545 maybe_signal_continuable_error (Lisp_Object type, const CIbyte *reason,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2546 Lisp_Object frob, Lisp_Object class_,
578
190b164ddcac [xemacs-hg @ 2001-05-25 11:26:50 by ben]
ben
parents: 563
diff changeset
2547 Error_Behavior errb)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2548 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2549 /* Optimization: */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2550 if (ERRB_EQ (errb, ERROR_ME_NOT))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2551 return Qnil;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2552 return maybe_signal_continuable_error_1 (type,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2553 build_error_data (reason, frob),
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2554 class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2555 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2556
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2557
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2558 /****************** Error functions class 3 ******************/
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2559
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2560 /* Class 3: Signal an error with a string and two associated objects.
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2561 These functions signal an error of a specified type, whose data
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2562 is three objects, a string and two related Lisp objects.
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2563 (The equivalent could be accomplished using the class 2 functions,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2564 but these are more convenient in this particular case.) */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2565
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2566 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2567 signal_error_2 (Lisp_Object type, const CIbyte *reason,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2568 Lisp_Object frob0, Lisp_Object frob1)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2569 {
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2570 signal_error_1 (type, list3 (build_msg_string (reason), frob0,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2571 frob1));
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2572 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2573
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2574 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2575 maybe_signal_error_2 (Lisp_Object type, const CIbyte *reason,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2576 Lisp_Object frob0, Lisp_Object frob1,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2577 Lisp_Object class_, Error_Behavior errb)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2578 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2579 /* Optimization: */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2580 if (ERRB_EQ (errb, ERROR_ME_NOT))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2581 return;
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2582 maybe_signal_error_1 (type, list3 (build_msg_string (reason), frob0,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2583 frob1), class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2584 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2585
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2586 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2587 signal_continuable_error_2 (Lisp_Object type, const CIbyte *reason,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2588 Lisp_Object frob0, Lisp_Object frob1)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2589 {
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2590 return Fsignal (type, list3 (build_msg_string (reason), frob0,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2591 frob1));
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2592 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2593
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2594 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2595 maybe_signal_continuable_error_2 (Lisp_Object type, const CIbyte *reason,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2596 Lisp_Object frob0, Lisp_Object frob1,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2597 Lisp_Object class_, Error_Behavior errb)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2598 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2599 /* Optimization: */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2600 if (ERRB_EQ (errb, ERROR_ME_NOT))
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2601 return Qnil;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2602 return maybe_signal_continuable_error_1
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2603 (type, list3 (build_msg_string (reason), frob0, frob1),
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2604 class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2605 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2606
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2607
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2608 /****************** Error functions class 4 ******************/
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2609
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2610 /* Class 4: Printf-like functions that signal an error.
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2611 These functions signal an error of a specified type, whose data
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2612 is a single string, created using the arguments. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2613
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2614 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2615 signal_ferror (Lisp_Object type, const CIbyte *fmt, ...)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2616 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2617 Lisp_Object obj;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2618 va_list args;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2619
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2620 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2621 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2622 va_end (args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2623
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2624 /* Fsignal GC-protects its args */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2625 signal_error (type, 0, obj);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2626 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2627
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2628 void
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2629 maybe_signal_ferror (Lisp_Object type, Lisp_Object class_, Error_Behavior errb,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2630 const CIbyte *fmt, ...)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2631 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2632 Lisp_Object obj;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2633 va_list args;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2634
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2635 /* Optimization: */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2636 if (ERRB_EQ (errb, ERROR_ME_NOT))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2637 return;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2638
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2639 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2640 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2641 va_end (args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2642
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2643 /* Fsignal GC-protects its args */
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2644 maybe_signal_error (type, 0, obj, class_, errb);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2645 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2646
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2647 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2648 signal_continuable_ferror (Lisp_Object type, const CIbyte *fmt, ...)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2649 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2650 Lisp_Object obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2651 va_list args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2652
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2653 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2654 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2655 va_end (args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2656
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2657 /* Fsignal GC-protects its args */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2658 return Fsignal (type, list1 (obj));
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2659 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2660
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2661 Lisp_Object
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2662 maybe_signal_continuable_ferror (Lisp_Object type, Lisp_Object class_,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2663 Error_Behavior errb, const CIbyte *fmt, ...)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2664 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2665 Lisp_Object obj;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2666 va_list args;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2667
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2668 /* Optimization: */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2669 if (ERRB_EQ (errb, ERROR_ME_NOT))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2670 return Qnil;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2671
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2672 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2673 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2674 va_end (args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2675
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2676 /* Fsignal GC-protects its args */
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2677 return maybe_signal_continuable_error (type, 0, obj, class_, errb);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2678 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2679
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2680
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2681 /****************** Error functions class 5 ******************/
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2682
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2683 /* Class 5: Printf-like functions that signal an error.
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2684 These functions signal an error of a specified type, whose data
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2685 is a one or more objects, a string (created using the arguments)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2686 and additional Lisp objects specified in FROB. (The syntax of FROB
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2687 is the same as for class 2.)
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2688
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2689 There is no need for a class 6 because you can always attach 2
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2690 objects using class 5 (for FROB, specify a list with three
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2691 elements, the first of which is Qunbound), and these functions are
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2692 not commonly used.
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2693 */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2694
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2695 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2696 signal_ferror_with_frob (Lisp_Object type, Lisp_Object frob, const CIbyte *fmt,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2697 ...)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2698 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2699 Lisp_Object obj;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2700 va_list args;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2701
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2702 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2703 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2704 va_end (args);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2705
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2706 /* Fsignal GC-protects its args */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2707 signal_error_1 (type, Fcons (obj, build_error_data (0, frob)));
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2708 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2709
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2710 void
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2711 maybe_signal_ferror_with_frob (Lisp_Object type, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2712 Lisp_Object class_, Error_Behavior errb,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2713 const CIbyte *fmt, ...)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2714 {
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2715 Lisp_Object obj;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2716 va_list args;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2717
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2718 /* Optimization: */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2719 if (ERRB_EQ (errb, ERROR_ME_NOT))
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2720 return;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2721
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2722 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2723 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2724 va_end (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2725
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2726 /* Fsignal GC-protects its args */
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2727 maybe_signal_error_1 (type, Fcons (obj, build_error_data (0, frob)), class_,
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2728 errb);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2729 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2730
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2731 Lisp_Object
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2732 signal_continuable_ferror_with_frob (Lisp_Object type, Lisp_Object frob,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2733 const CIbyte *fmt, ...)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2734 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2735 Lisp_Object obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2736 va_list args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2737
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2738 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2739 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2740 va_end (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2741
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2742 /* Fsignal GC-protects its args */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2743 return Fsignal (type, Fcons (obj, build_error_data (0, frob)));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2744 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2745
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2746 Lisp_Object
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2747 maybe_signal_continuable_ferror_with_frob (Lisp_Object type, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2748 Lisp_Object class_,
578
190b164ddcac [xemacs-hg @ 2001-05-25 11:26:50 by ben]
ben
parents: 563
diff changeset
2749 Error_Behavior errb,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2750 const CIbyte *fmt, ...)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2751 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2752 Lisp_Object obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2753 va_list args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2754
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2755 /* Optimization: */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2756 if (ERRB_EQ (errb, ERROR_ME_NOT))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2757 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2758
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2759 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2760 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2761 va_end (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2762
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2763 /* Fsignal GC-protects its args */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2764 return maybe_signal_continuable_error_1 (type,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2765 Fcons (obj,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2766 build_error_data (0, frob)),
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2767 class_, errb);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2768 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2769
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2770
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2771 /* This is what the QUIT macro calls to signal a quit */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2772 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2773 signal_quit (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2774 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2775 /* This function cannot GC. GC is prohibited because most callers do
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2776 not expect GC occurring in QUIT. Remove this if/when that gets fixed.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2777 --ben */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2778
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2779 int count;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2780
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2781 if (EQ (Vquit_flag, Qcritical))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2782 debug_on_quit |= 2; /* set critical bit. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2783 Vquit_flag = Qnil;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2784 count = begin_gc_forbidden ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2785 /* note that this is continuable. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2786 Fsignal (Qquit, Qnil);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
2787 unbind_to (count);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2788 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2789
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2790
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2791 /************************ convenience error functions ***********************/
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2792
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2793 Lisp_Object
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2794 signal_void_function_error (Lisp_Object function)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2795 {
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2796 return Fsignal (Qvoid_function, list1 (function));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2797 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2798
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2799 Lisp_Object
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2800 signal_invalid_function_error (Lisp_Object function)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2801 {
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2802 return Fsignal (Qinvalid_function, list1 (function));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2803 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2804
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2805 Lisp_Object
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2806 signal_wrong_number_of_arguments_error (Lisp_Object function, int nargs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2807 {
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2808 return Fsignal (Qwrong_number_of_arguments,
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2809 list2 (function, make_int (nargs)));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2810 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2811
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2812 /* Used in list traversal macros for efficiency. */
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2813 DOESNT_RETURN
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2814 signal_malformed_list_error (Lisp_Object list)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2815 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2816 signal_error (Qmalformed_list, 0, list);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2817 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2818
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2819 DOESNT_RETURN
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2820 signal_malformed_property_list_error (Lisp_Object list)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2821 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2822 signal_error (Qmalformed_property_list, 0, list);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2823 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2824
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2825 DOESNT_RETURN
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2826 signal_circular_list_error (Lisp_Object list)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2827 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2828 signal_error (Qcircular_list, 0, list);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2829 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2830
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
2831 DOESNT_RETURN
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2832 signal_circular_property_list_error (Lisp_Object list)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2833 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2834 signal_error (Qcircular_property_list, 0, list);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2835 }
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2836
2267
5753220a0f80 [xemacs-hg @ 2004-09-14 02:53:13 by james]
james
parents: 2238
diff changeset
2837 /* Called from within emacs_doprnt_1, so REASON is not formatted. */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2838 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2839 syntax_error (const CIbyte *reason, Lisp_Object frob)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2840 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2841 signal_error (Qsyntax_error, reason, frob);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2842 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2843
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2844 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2845 syntax_error_2 (const CIbyte *reason, Lisp_Object frob1, Lisp_Object frob2)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2846 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2847 signal_error_2 (Qsyntax_error, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2848 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2849
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2850 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2851 maybe_syntax_error (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2852 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2853 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2854 maybe_signal_error (Qsyntax_error, reason, frob, class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2855 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2856
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2857 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2858 sferror (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2859 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2860 signal_error (Qstructure_formation_error, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2861 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2862
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2863 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2864 sferror_2 (const CIbyte *reason, Lisp_Object frob1, Lisp_Object frob2)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2865 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2866 signal_error_2 (Qstructure_formation_error, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2867 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2868
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2869 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2870 maybe_sferror (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2871 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2872 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2873 maybe_signal_error (Qstructure_formation_error, reason, frob, class_, errb);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2874 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2875
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2876 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2877 invalid_argument (const CIbyte *reason, Lisp_Object frob)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2878 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2879 signal_error (Qinvalid_argument, reason, frob);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2880 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2881
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2882 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2883 invalid_argument_2 (const CIbyte *reason, Lisp_Object frob1,
609
13e3d7ae7155 [xemacs-hg @ 2001-06-06 12:34:42 by ben]
ben
parents: 578
diff changeset
2884 Lisp_Object frob2)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2885 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2886 signal_error_2 (Qinvalid_argument, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2887 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2888
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2889 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2890 maybe_invalid_argument (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2891 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2892 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2893 maybe_signal_error (Qinvalid_argument, reason, frob, class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2894 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2895
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2896 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2897 invalid_constant (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2898 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2899 signal_error (Qinvalid_constant, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2900 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2901
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2902 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2903 invalid_constant_2 (const CIbyte *reason, Lisp_Object frob1,
609
13e3d7ae7155 [xemacs-hg @ 2001-06-06 12:34:42 by ben]
ben
parents: 578
diff changeset
2904 Lisp_Object frob2)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2905 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2906 signal_error_2 (Qinvalid_constant, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2907 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2908
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2909 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2910 maybe_invalid_constant (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2911 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2912 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2913 maybe_signal_error (Qinvalid_constant, reason, frob, class_, errb);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2914 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2915
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2916 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2917 invalid_operation (const CIbyte *reason, Lisp_Object frob)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2918 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2919 signal_error (Qinvalid_operation, reason, frob);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2920 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2921
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2922 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2923 invalid_operation_2 (const CIbyte *reason, Lisp_Object frob1,
609
13e3d7ae7155 [xemacs-hg @ 2001-06-06 12:34:42 by ben]
ben
parents: 578
diff changeset
2924 Lisp_Object frob2)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2925 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2926 signal_error_2 (Qinvalid_operation, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2927 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2928
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2929 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2930 maybe_invalid_operation (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2931 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2932 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2933 maybe_signal_error (Qinvalid_operation, reason, frob, class_, errb);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2934 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2935
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2936 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2937 invalid_change (const CIbyte *reason, Lisp_Object frob)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2938 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2939 signal_error (Qinvalid_change, reason, frob);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2940 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2941
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2942 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2943 invalid_change_2 (const CIbyte *reason, Lisp_Object frob1, Lisp_Object frob2)
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2944 {
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2945 signal_error_2 (Qinvalid_change, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2946 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2947
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2948 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2949 maybe_invalid_change (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2950 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2951 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2952 maybe_signal_error (Qinvalid_change, reason, frob, class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2953 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2954
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2955 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2956 invalid_state (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2957 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2958 signal_error (Qinvalid_state, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2959 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2960
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2961 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2962 invalid_state_2 (const CIbyte *reason, Lisp_Object frob1, Lisp_Object frob2)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2963 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2964 signal_error_2 (Qinvalid_state, reason, frob1, frob2);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2965 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2966
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2967 void
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2968 maybe_invalid_state (const CIbyte *reason, Lisp_Object frob,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2969 Lisp_Object class_, Error_Behavior errb)
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2970 {
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
2971 maybe_signal_error (Qinvalid_state, reason, frob, class_, errb);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2972 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2973
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2974 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2975 wtaerror (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2976 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2977 signal_error (Qwrong_type_argument, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2978 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2979
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2980 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2981 stack_overflow (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2982 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2983 signal_error (Qstack_overflow, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2984 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2985
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2986 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2987 out_of_memory (const CIbyte *reason, Lisp_Object frob)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2988 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2989 signal_error (Qout_of_memory, reason, frob);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2990 }
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2991
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2992 DOESNT_RETURN
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
2993 printing_unreadable_object (const CIbyte *fmt, ...)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2994 {
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2995 Lisp_Object obj;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2996 va_list args;
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2997
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
2998 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
2999 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3000 va_end (args);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3001
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3002 /* Fsignal GC-protects its args */
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3003 signal_error (Qprinting_unreadable_object, 0, obj);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3004 }
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3005
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3006
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3007 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3008 /* User commands */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3009 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3010
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3011 DEFUN ("commandp", Fcommandp, 1, 1, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3012 Return t if FUNCTION makes provisions for interactive calling.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3013 This means it contains a description for how to read arguments to give it.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3014 The value is nil for an invalid function or a symbol with no function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3015 definition.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3016
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3017 Interactively callable functions include
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3018
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3019 -- strings and vectors (treated as keyboard macros)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3020 -- lambda-expressions that contain a top-level call to `interactive'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3021 -- autoload definitions made by `autoload' with non-nil fourth argument
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3022 (i.e. the interactive flag)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3023 -- compiled-function objects with a non-nil `compiled-function-interactive'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3024 value
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3025 -- subrs (built-in functions) that are interactively callable
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3026
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3027 Also, a symbol satisfies `commandp' if its function definition does so.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3028 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3029 (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3030 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3031 Lisp_Object fun = indirect_function (function, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3032
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3033 if (COMPILED_FUNCTIONP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3034 return XCOMPILED_FUNCTION (fun)->flags.interactivep ? Qt : Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3035
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3036 /* Lists may represent commands. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3037 if (CONSP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3038 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3039 Lisp_Object funcar = XCAR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3040 if (EQ (funcar, Qlambda))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3041 return Fassq (Qinteractive, Fcdr (Fcdr (fun)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3042 if (EQ (funcar, Qautoload))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3043 return Fcar (Fcdr (Fcdr (Fcdr (fun))));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3044 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3045 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3046 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3047
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3048 /* Emacs primitives are interactive if their DEFUN specifies an
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3049 interactive spec. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3050 if (SUBRP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3051 return XSUBR (fun)->prompt ? Qt : Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3052
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3053 /* Strings and vectors are keyboard macros. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3054 if (VECTORP (fun) || STRINGP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3055 return Qt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3056
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3057 /* Everything else (including Qunbound) is not a command. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3058 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3059 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3060
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3061 DEFUN ("command-execute", Fcommand_execute, 1, 3, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3062 Execute CMD as an editor command.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3063 CMD must be an object that satisfies the `commandp' predicate.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3064 Optional second arg RECORD-FLAG is as in `call-interactively'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3065 The argument KEYS specifies the value to use instead of (this-command-keys)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3066 when reading the arguments.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3067 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3068 (cmd, record_flag, keys))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3069 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3070 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3071 Lisp_Object prefixarg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3072 Lisp_Object final = cmd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3073 struct backtrace backtrace;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3074 struct console *con = XCONSOLE (Vselected_console);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3075
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3076 prefixarg = con->prefix_arg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3077 con->prefix_arg = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3078 Vcurrent_prefix_arg = prefixarg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3079 debug_on_next_call = 0; /* #### from FSFmacs; correct? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3080
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3081 if (SYMBOLP (cmd) && !NILP (Fget (cmd, Qdisabled, Qnil)))
733
b1f74adcc1ff [xemacs-hg @ 2002-01-22 20:40:00 by janv]
janv
parents: 665
diff changeset
3082 return run_hook (Qdisabled_command_hook);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3083
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3084 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3085 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3086 final = indirect_function (cmd, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3087 if (CONSP (final) && EQ (Fcar (final), Qautoload))
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3088 {
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3089 /* do_autoload GCPROs both arguments */
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3090 do_autoload (final, cmd);
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3091 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3092 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3093 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3094 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3095
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3096 if (CONSP (final) || SUBRP (final) || COMPILED_FUNCTIONP (final))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3097 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3098 backtrace.function = &Qcall_interactively;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3099 backtrace.args = &cmd;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3100 backtrace.nargs = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3101 backtrace.evalargs = 0;
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3102 backtrace.pdlcount = specpdl_depth ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3103 backtrace.debug_on_exit = 0;
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3104 backtrace.function_being_called = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3105 PUSH_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3106
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3107 PROFILE_ENTER_FUNCTION ();
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3108 final = Fcall_interactively (cmd, record_flag, keys);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3109 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3110
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3111 POP_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3112 return final;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3113 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3114 else if (STRINGP (final) || VECTORP (final))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3115 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3116 return Fexecute_kbd_macro (final, prefixarg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3117 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3118 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3119 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3120 Fsignal (Qwrong_type_argument,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3121 Fcons (Qcommandp,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3122 (EQ (cmd, final)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3123 ? list1 (cmd)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3124 : list2 (cmd, final))));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3125 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3126 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3127 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3128
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3129 DEFUN ("interactive-p", Finteractive_p, 0, 0, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3130 Return t if function in which this appears was called interactively.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3131 This means that the function was called with call-interactively (which
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3132 includes being called as the binding of a key)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3133 and input is currently coming from the keyboard (not in keyboard macro).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3134 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3135 ())
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3136 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3137 REGISTER struct backtrace *btp;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3138 REGISTER Lisp_Object fun;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3139
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3140 if (!INTERACTIVE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3141 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3142
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3143 /* Unless the object was compiled, skip the frame of interactive-p itself
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3144 (if interpreted) or the frame of byte-code (if called from a compiled
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3145 function). Note that *btp->function may be a symbol pointing at a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3146 compiled function. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3147 btp = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3148
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3149 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3150
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3151 /* #### FSFmacs does the following instead. I can't figure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3152 out which one is more correct. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3153 /* If this isn't a byte-compiled function, there may be a frame at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3154 the top for Finteractive_p itself. If so, skip it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3155 fun = Findirect_function (*btp->function);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3156 if (SUBRP (fun) && XSUBR (fun) == &Sinteractive_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3157 btp = btp->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3158
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3159 /* If we're running an Emacs 18-style byte-compiled function, there
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3160 may be a frame for Fbyte_code. Now, given the strictest
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3161 definition, this function isn't really being called
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3162 interactively, but because that's the way Emacs 18 always builds
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3163 byte-compiled functions, we'll accept it for now. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3164 if (EQ (*btp->function, Qbyte_code))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3165 btp = btp->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3166
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3167 /* If this isn't a byte-compiled function, then we may now be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3168 looking at several frames for special forms. Skip past them. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3169 while (btp &&
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3170 btp->nargs == UNEVALLED)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3171 btp = btp->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3172
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3173 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3174
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3175 if (! (COMPILED_FUNCTIONP (Findirect_function (*btp->function))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3176 btp = btp->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3177 for (;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3178 btp && (btp->nargs == UNEVALLED
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3179 || EQ (*btp->function, Qbyte_code));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3180 btp = btp->next)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3181 {}
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3182 /* btp now points at the frame of the innermost function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3183 that DOES eval its args.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3184 If it is a built-in function (such as load or eval-region)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3185 return nil. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3186 /* Beats me why this is necessary, but it is */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3187 if (btp && EQ (*btp->function, Qcall_interactively))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3188 return Qt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3189
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3190 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3191
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3192 fun = Findirect_function (*btp->function);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3193 if (SUBRP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3194 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3195 /* btp points to the frame of a Lisp function that called interactive-p.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3196 Return t if that function was called interactively. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3197 if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3198 return Qt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3199 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3200 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3201
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3202
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3203 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3204 /* Autoloading */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3205 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3206
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3207 DEFUN ("autoload", Fautoload, 2, 5, 0, /*
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3208 Define FUNCTION to autoload from FILENAME.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3209 FUNCTION is a symbol; FILENAME is a file name string to pass to `load'.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3210 The remaining optional arguments provide additional info about the
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3211 real definition.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3212 DOCSTRING is documentation for FUNCTION.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3213 INTERACTIVE, if non-nil, says FUNCTION can be called interactively.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3214 TYPE indicates the type of the object:
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3215 nil or omitted says FUNCTION is a function,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3216 `keymap' says FUNCTION is really a keymap, and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3217 `macro' or t says FUNCTION is really a macro.
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3218 If FUNCTION already has a non-void function definition that is not an
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3219 autoload object, this function does nothing and returns nil.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3220 */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3221 (function, filename, docstring, interactive, type))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3222 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3223 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3224 CHECK_SYMBOL (function);
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3225 CHECK_STRING (filename);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3226
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3227 /* If function is defined and not as an autoload, don't override */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3228 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3229 Lisp_Object f = XSYMBOL (function)->function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3230 if (!UNBOUNDP (f) && !(CONSP (f) && EQ (XCAR (f), Qautoload)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3231 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3232 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3233
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3234 if (purify_flag)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3235 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3236 /* Attempt to avoid consing identical (string=) pure strings. */
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3237 filename = Fsymbol_name (Fintern (filename, Qnil));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3238 }
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 438
diff changeset
3239
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
3240 return Ffset (function, Fcons (Qautoload, list4 (filename,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3241 docstring,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3242 interactive,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3243 type)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3244 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3245
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3246 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3247 un_autoload (Lisp_Object oldqueue)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3248 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3249 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3250 REGISTER Lisp_Object queue, first, second;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3251
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3252 /* Queue to unwind is current value of Vautoload_queue.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3253 oldqueue is the shadowed value to leave in Vautoload_queue. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3254 queue = Vautoload_queue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3255 Vautoload_queue = oldqueue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3256 while (CONSP (queue))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3257 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3258 first = XCAR (queue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3259 second = Fcdr (first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3260 first = Fcar (first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3261 if (NILP (second))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3262 Vfeatures = first;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3263 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3264 Ffset (first, second);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3265 queue = Fcdr (queue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3266 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3267 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3268 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3269
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3270 /* do_autoload GCPROs both arguments */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3271 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3272 do_autoload (Lisp_Object fundef,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3273 Lisp_Object funname)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3274 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3275 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3276 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3277 Lisp_Object fun = funname;
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3278 struct gcpro gcpro1, gcpro2, gcpro3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3279
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3280 CHECK_SYMBOL (funname);
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3281 GCPRO3 (fundef, funname, fun);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3282
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3283 /* Value saved here is to be restored into Vautoload_queue */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3284 record_unwind_protect (un_autoload, Vautoload_queue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3285 Vautoload_queue = Qt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3286 call4 (Qload, Fcar (Fcdr (fundef)), Qnil, noninteractive ? Qt : Qnil, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3287
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3288 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3289 Lisp_Object queue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3290
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3291 /* Save the old autoloads, in case we ever do an unload. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3292 for (queue = Vautoload_queue; CONSP (queue); queue = XCDR (queue))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3293 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3294 Lisp_Object first = XCAR (queue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3295 Lisp_Object second = Fcdr (first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3296
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3297 first = Fcar (first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3298
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3299 /* Note: This test is subtle. The cdr of an autoload-queue entry
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3300 may be an atom if the autoload entry was generated by a defalias
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3301 or fset. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3302 if (CONSP (second))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3303 Fput (first, Qautoload, (XCDR (second)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3304 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3305 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3306
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3307 /* Once loading finishes, don't undo it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3308 Vautoload_queue = Qt;
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
3309 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3310
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3311 fun = indirect_function (fun, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3312
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3313 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3314 if (!NILP (Fequal (fun, fundef)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3315 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3316 if (UNBOUNDP (fun)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3317 || (CONSP (fun)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3318 && EQ (XCAR (fun), Qautoload)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3319 #endif
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3320 invalid_state ("Autoloading failed to define function", funname);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3321 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3322 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3323
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3324
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3325 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3326 /* eval, funcall, apply */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3327 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3328
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3329 /* NOTE: If you are hearing the endless complaint that function calls in
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3330 elisp are extremely slow, it just isn't true any more! The stuff below
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3331 -- in particular, the calling of subrs and compiled functions, the most
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3332 common cases -- has been highly optimized. There isn't a whole lot left
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3333 to do to squeeze more speed out except by switching to lexical
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3334 variables, which would eliminate the specbind loop. (But the real gain
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3335 from lexical variables would come from better optimization -- with
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3336 dynamic binding, you have the constant problem that any function call
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3337 that you haven't explicitly proven to be side-effect-free might
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3338 potentially side effect your local variables, which makes optimization
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3339 extremely difficult when there are function calls anywhere in a chunk of
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3340 code to be optimized. Even worse, you don't know that *your* local
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3341 variables aren't side-effecting an outer function's local variables, so
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3342 it's impossible to optimize away almost *any* variable assignment.) */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3343
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3344 static Lisp_Object funcall_lambda (Lisp_Object fun,
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3345 int nargs, Lisp_Object args[]);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3346 static int in_warnings;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3347
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3348
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3349 void handle_compiled_function_with_and_rest (Lisp_Compiled_Function *f,
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3350 int nargs,
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3351 Lisp_Object args[]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3352
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3353 /* The theory behind making this a separate function is to shrink
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3354 funcall_compiled_function() so as to increase the likelihood of a cache
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3355 hit in the L1 cache -- &rest processing is not going to be fast anyway.
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3356 The idea is the same as with execute_rare_opcode() in bytecode.c. We
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3357 make this non-static to ensure the compiler doesn't inline it. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3358
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3359 void
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3360 handle_compiled_function_with_and_rest (Lisp_Compiled_Function *f, int nargs,
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3361 Lisp_Object args[])
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3362 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3363 REGISTER int i = 0;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3364 int max_non_rest_args = f->args_in_array - 1;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3365 int bindargs = min (nargs, max_non_rest_args);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3366
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3367 for (i = 0; i < bindargs; i++)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3368 SPECBIND_FAST_UNSAFE (f->args[i], args[i]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3369 for (i = bindargs; i < max_non_rest_args; i++)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3370 SPECBIND_FAST_UNSAFE (f->args[i], Qnil);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3371 SPECBIND_FAST_UNSAFE
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3372 (f->args[max_non_rest_args],
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3373 nargs > max_non_rest_args ?
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3374 Flist (nargs - max_non_rest_args, &args[max_non_rest_args]) :
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3375 Qnil);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3376 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3377
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3378 /* Apply compiled-function object FUN to the NARGS evaluated arguments
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3379 in ARGS, and return the result of evaluation. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3380 inline static Lisp_Object
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3381 funcall_compiled_function (Lisp_Object fun, int nargs, Lisp_Object args[])
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3382 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3383 /* This function can GC */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3384 int speccount = specpdl_depth();
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3385 REGISTER int i = 0;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3386 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3387
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3388 if (!OPAQUEP (f->instructions))
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3389 /* Lazily munge the instructions into a more efficient form */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3390 optimize_compiled_function (fun);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3391
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3392 /* optimize_compiled_function() guaranteed that f->specpdl_depth is
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3393 the required space on the specbinding stack for binding the args
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3394 and local variables of fun. So just reserve it once. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3395 SPECPDL_RESERVE (f->specpdl_depth);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3396
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3397 if (nargs == f->max_args) /* Optimize for the common case -- no unspecified
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3398 optional arguments. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3399 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3400 #if 1
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3401 for (i = 0; i < nargs; i++)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3402 SPECBIND_FAST_UNSAFE (f->args[i], args[i]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3403 #else
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3404 /* Here's an alternate way to write the loop that tries to further
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3405 optimize funcalls for functions with few arguments by partially
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3406 unrolling the loop. It's not clear whether this is a win since it
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3407 increases the size of the function and the possibility of L1 cache
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3408 misses. (Microsoft VC++ 6 with /O2 /G5 generates 0x90 == 144 bytes
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3409 per SPECBIND_FAST_UNSAFE().) Tests under VC++ 6, running the byte
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3410 compiler repeatedly and looking at the total time, show very
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3411 little difference between the simple loop above, the unrolled code
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3412 below, and a "partly unrolled" solution with only cases 0-2 below
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3413 instead of 0-4. Therefore, I'm keeping it at the simple loop
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3414 because it's smaller. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3415 switch (nargs)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3416 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3417 default:
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3418 for (i = nargs - 1; i >= 4; i--)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3419 SPECBIND_FAST_UNSAFE (f->args[i], args[i]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3420 case 4: SPECBIND_FAST_UNSAFE (f->args[3], args[3]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3421 case 3: SPECBIND_FAST_UNSAFE (f->args[2], args[2]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3422 case 2: SPECBIND_FAST_UNSAFE (f->args[1], args[1]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3423 case 1: SPECBIND_FAST_UNSAFE (f->args[0], args[0]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3424 case 0: break;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3425 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3426 #endif
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3427 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3428 else if (nargs < f->min_args)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3429 goto wrong_number_of_arguments;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3430 else if (nargs < f->max_args)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3431 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3432 for (i = 0; i < nargs; i++)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3433 SPECBIND_FAST_UNSAFE (f->args[i], args[i]);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3434 for (i = nargs; i < f->max_args; i++)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3435 SPECBIND_FAST_UNSAFE (f->args[i], Qnil);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3436 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3437 else if (f->max_args == MANY)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3438 handle_compiled_function_with_and_rest (f, nargs, args);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3439 else
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3440 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3441 wrong_number_of_arguments:
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3442 /* The actual printed compiled_function object is incomprehensible.
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3443 Check the backtrace to see if we can get a more meaningful symbol. */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3444 if (EQ (fun, indirect_function (*backtrace_list->function, 0)))
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3445 fun = *backtrace_list->function;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3446 return Fsignal (Qwrong_number_of_arguments,
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3447 list2 (fun, make_int (nargs)));
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3448 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3449
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3450 {
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3451 Lisp_Object value =
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3452 execute_optimized_program ((Opbyte *) XOPAQUE_DATA (f->instructions),
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3453 f->stack_depth,
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3454 XVECTOR_DATA (f->constants));
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3455
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3456 /* The attempt to optimize this by only unbinding variables failed
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3457 because using buffer-local variables as function parameters
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3458 leads to specpdl_ptr->func != 0 */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3459 /* UNBIND_TO_GCPRO_VARIABLES_ONLY (speccount, value); */
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3460 UNBIND_TO_GCPRO (speccount, value);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3461 return value;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3462 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3463 }
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3464
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3465 DEFUN ("eval", Feval, 1, 1, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3466 Evaluate FORM and return its value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3467 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3468 (form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3469 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3470 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3471 Lisp_Object fun, val, original_fun, original_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3472 int nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3473 struct backtrace backtrace;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3474
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3475 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3476 check_proper_critical_section_lisp_protection ();
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3477 #endif
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3478
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3479 /* I think this is a pretty safe place to call Lisp code, don't you? */
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3480 while (!in_warnings && !NILP (Vpending_warnings)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3481 /* well, perhaps not so safe after all! */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3482 && !(inhibit_flags & INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3483 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3484 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
3485 Lisp_Object this_warning_cons, this_warning, class_, level, messij;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3486 int speccount = internal_bind_int (&in_warnings, 1);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3487
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3488 this_warning_cons = Vpending_warnings;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3489 this_warning = XCAR (this_warning_cons);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3490 /* in case an error occurs in the warn function, at least
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3491 it won't happen infinitely */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3492 Vpending_warnings = XCDR (Vpending_warnings);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
3493 free_cons (this_warning_cons);
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
3494 class_ = XCAR (this_warning);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3495 level = XCAR (XCDR (this_warning));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3496 messij = XCAR (XCDR (XCDR (this_warning)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3497 free_list (this_warning);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3498
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3499 if (NILP (Vpending_warnings))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3500 Vpending_warnings_tail = Qnil; /* perhaps not strictly necessary,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3501 but safer */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3502
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
3503 GCPRO4 (form, class_, level, messij);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3504 if (!STRINGP (messij))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3505 messij = Fprin1_to_string (messij, Qnil);
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
3506 call3 (Qdisplay_warning, class_, messij, level);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3507 UNGCPRO;
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
3508 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3509 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3510
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3511 if (!CONSP (form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3512 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3513 if (SYMBOLP (form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3514 return Fsymbol_value (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3515 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3516 return form;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3517 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3518
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3519 QUIT;
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3520 if (need_to_garbage_collect)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3521 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3522 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3523 GCPRO1 (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3524 garbage_collect_1 ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3525 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3526 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3527
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3528 if (++lisp_eval_depth > max_lisp_eval_depth)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3529 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3530 if (max_lisp_eval_depth < 100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3531 max_lisp_eval_depth = 100;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3532 if (lisp_eval_depth > max_lisp_eval_depth)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3533 stack_overflow ("Lisp nesting exceeds `max-lisp-eval-depth'",
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3534 Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3535 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3536
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3537 /* We guaranteed CONSP (form) above */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3538 original_fun = XCAR (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3539 original_args = XCDR (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3540
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3541 GET_EXTERNAL_LIST_LENGTH (original_args, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3542
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3543 backtrace.pdlcount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3544 backtrace.function = &original_fun; /* This also protects them from gc */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3545 backtrace.args = &original_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3546 backtrace.nargs = UNEVALLED;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3547 backtrace.evalargs = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3548 backtrace.debug_on_exit = 0;
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3549 backtrace.function_being_called = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3550 PUSH_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3551
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3552 if (debug_on_next_call)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3553 do_debug_on_call (Qt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3554
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3555 /* At this point, only original_fun and original_args
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3556 have values that will be used below. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3557 retry:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3558 fun = indirect_function (original_fun, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3559
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3560 if (SUBRP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3561 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3562 Lisp_Subr *subr = XSUBR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3563 int max_args = subr->max_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3564
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3565 if (nargs < subr->min_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3566 goto wrong_number_of_arguments;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3567
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3568 if (max_args == UNEVALLED) /* Optimize for the common case */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3569 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3570 backtrace.evalargs = 0;
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3571 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3572 val = (((Lisp_Object (*) (Lisp_Object)) subr_function (subr))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3573 (original_args));
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3574 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3575 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3576 else if (nargs <= max_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3577 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3578 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3579 Lisp_Object args[SUBR_MAX_ARGS];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3580 REGISTER Lisp_Object *p = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3581
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3582 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3583 gcpro1.nvars = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3584
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3585 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3586 LIST_LOOP_2 (arg, original_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3587 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3588 *p++ = Feval (arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3589 gcpro1.nvars++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3590 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3591 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3592
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3593 /* &optional args default to nil. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3594 while (p - args < max_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3595 *p++ = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3596
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3597 backtrace.args = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3598 backtrace.nargs = nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3599
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3600 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3601 FUNCALL_SUBR (val, subr, args, max_args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3602 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3603
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3604 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3605 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3606 else if (max_args == MANY)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3607 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3608 /* Pass a vector of evaluated arguments */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3609 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3610 Lisp_Object *args = alloca_array (Lisp_Object, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3611 REGISTER Lisp_Object *p = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3612
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3613 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3614 gcpro1.nvars = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3615
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3616 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3617 LIST_LOOP_2 (arg, original_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3618 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3619 *p++ = Feval (arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3620 gcpro1.nvars++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3621 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3622 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3623
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3624 backtrace.args = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3625 backtrace.nargs = nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3626
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3627 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3628 val = (((Lisp_Object (*) (int, Lisp_Object *)) subr_function (subr))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3629 (nargs, args));
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3630 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3631
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3632 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3633 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3634 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3635 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3636 wrong_number_of_arguments:
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 438
diff changeset
3637 val = signal_wrong_number_of_arguments_error (original_fun, nargs);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3638 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3639 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3640 else if (COMPILED_FUNCTIONP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3641 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3642 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3643 Lisp_Object *args = alloca_array (Lisp_Object, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3644 REGISTER Lisp_Object *p = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3645
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3646 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3647 gcpro1.nvars = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3648
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3649 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3650 LIST_LOOP_2 (arg, original_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3651 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3652 *p++ = Feval (arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3653 gcpro1.nvars++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3654 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3655 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3656
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3657 backtrace.args = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3658 backtrace.nargs = nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3659 backtrace.evalargs = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3660
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3661 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3662 val = funcall_compiled_function (fun, nargs, args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3663 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3664
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3665 /* Do the debug-on-exit now, while args is still GCPROed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3666 if (backtrace.debug_on_exit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3667 val = do_debug_on_exit (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3668 /* Don't do it again when we return to eval. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3669 backtrace.debug_on_exit = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3670
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3671 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3672 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3673 else if (CONSP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3674 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3675 Lisp_Object funcar = XCAR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3676
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3677 if (EQ (funcar, Qautoload))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3678 {
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3679 /* do_autoload GCPROs both arguments */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3680 do_autoload (fun, original_fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3681 goto retry;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3682 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3683 else if (EQ (funcar, Qmacro))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3684 {
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3685 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3686 val = Feval (apply1 (XCDR (fun), original_args));
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3687 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3688 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3689 else if (EQ (funcar, Qlambda))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3690 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3691 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3692 Lisp_Object *args = alloca_array (Lisp_Object, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3693 REGISTER Lisp_Object *p = args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3694
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3695 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3696 gcpro1.nvars = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3697
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3698 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3699 LIST_LOOP_2 (arg, original_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3700 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3701 *p++ = Feval (arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3702 gcpro1.nvars++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3703 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3704 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3705
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3706 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3707
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3708 backtrace.args = args; /* this also GCPROs `args' */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3709 backtrace.nargs = nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3710 backtrace.evalargs = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3711
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3712 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3713 val = funcall_lambda (fun, nargs, args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3714 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3715
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3716 /* Do the debug-on-exit now, while args is still GCPROed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3717 if (backtrace.debug_on_exit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3718 val = do_debug_on_exit (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3719 /* Don't do it again when we return to eval. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3720 backtrace.debug_on_exit = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3721 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3722 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3723 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3724 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3725 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3726 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3727 else /* ! (SUBRP (fun) || COMPILED_FUNCTIONP (fun) || CONSP (fun)) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3728 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3729 invalid_function:
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3730 val = signal_invalid_function_error (fun);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3731 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3732
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3733 lisp_eval_depth--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3734 if (backtrace.debug_on_exit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3735 val = do_debug_on_exit (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3736 POP_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3737 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3738 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3739
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3740
1111
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3741
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3742 static void
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3743 run_post_gc_hook (void)
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3744 {
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3745 Lisp_Object args[2];
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3746
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3747 args[0] = Qpost_gc_hook;
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3748 args[1] = Fcons (Fcons (Qfinalize_list, zap_finalize_list ()), Qnil);
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3749
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3750 run_hook_with_args_trapping_problems
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
3751 (Qgarbage_collecting, 2, args, RUN_HOOKS_TO_COMPLETION,
1111
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3752 INHIBIT_QUIT | NO_INHIBIT_ERRORS);
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3753 }
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3754
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3755 DEFUN ("funcall", Ffuncall, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3756 Call first argument as a function, passing the remaining arguments to it.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3757 Thus, (funcall 'cons 'x 'y) returns (x . y).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3758 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3759 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3760 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3761 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3762 Lisp_Object fun;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3763 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3764 struct backtrace backtrace;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3765 int fun_nargs = nargs - 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3766 Lisp_Object *fun_args = args + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3767
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3768 /* QUIT will check for proper redisplay wrapping */
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
3769
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3770 QUIT;
851
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3771
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3772 if (funcall_allocation_flag)
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3773 {
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3774 if (need_to_garbage_collect)
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3775 /* Callers should gcpro lexpr args */
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3776 garbage_collect_1 ();
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3777 if (need_to_check_c_alloca)
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3778 {
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3779 if (++funcall_alloca_count >= MAX_FUNCALLS_BETWEEN_ALLOCA_CLEANUP)
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3780 {
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3781 xemacs_c_alloca (0);
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3782 funcall_alloca_count = 0;
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3783 }
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3784 }
887
ccc3177ef10b [xemacs-hg @ 2002-06-28 14:21:41 by michaels]
michaels
parents: 872
diff changeset
3785 if (need_to_signal_post_gc)
ccc3177ef10b [xemacs-hg @ 2002-06-28 14:21:41 by michaels]
michaels
parents: 872
diff changeset
3786 {
ccc3177ef10b [xemacs-hg @ 2002-06-28 14:21:41 by michaels]
michaels
parents: 872
diff changeset
3787 need_to_signal_post_gc = 0;
1111
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3788 recompute_funcall_allocation_flag ();
184461bc8de4 [xemacs-hg @ 2002-11-18 06:52:23 by ben]
ben
parents: 970
diff changeset
3789 run_post_gc_hook ();
887
ccc3177ef10b [xemacs-hg @ 2002-06-28 14:21:41 by michaels]
michaels
parents: 872
diff changeset
3790 }
851
e7ee5f8bde58 [xemacs-hg @ 2002-05-23 11:46:08 by ben]
ben
parents: 826
diff changeset
3791 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3792
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3793 if (++lisp_eval_depth > max_lisp_eval_depth)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3794 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3795 if (max_lisp_eval_depth < 100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3796 max_lisp_eval_depth = 100;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3797 if (lisp_eval_depth > max_lisp_eval_depth)
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3798 stack_overflow ("Lisp nesting exceeds `max-lisp-eval-depth'",
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
3799 Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3800 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3801
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3802 backtrace.pdlcount = specpdl_depth ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3803 backtrace.function = &args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3804 backtrace.args = fun_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3805 backtrace.nargs = fun_nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3806 backtrace.evalargs = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3807 backtrace.debug_on_exit = 0;
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3808 backtrace.function_being_called = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3809 PUSH_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3810
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3811 if (debug_on_next_call)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3812 do_debug_on_call (Qlambda);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3813
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3814 retry:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3815
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3816 fun = args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3817
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3818 /* We could call indirect_function directly, but profiling shows
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3819 this is worth optimizing by partially unrolling the loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3820 if (SYMBOLP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3821 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3822 fun = XSYMBOL (fun)->function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3823 if (SYMBOLP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3824 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3825 fun = XSYMBOL (fun)->function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3826 if (SYMBOLP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3827 fun = indirect_function (fun, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3828 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3829 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3830
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3831 if (SUBRP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3832 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3833 Lisp_Subr *subr = XSUBR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3834 int max_args = subr->max_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3835 Lisp_Object spacious_args[SUBR_MAX_ARGS];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3836
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3837 if (fun_nargs == max_args) /* Optimize for the common case */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3838 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3839 funcall_subr:
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3840 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3841 FUNCALL_SUBR (val, subr, fun_args, max_args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3842 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3843 }
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3844 else if (fun_nargs < subr->min_args)
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3845 {
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3846 goto wrong_number_of_arguments;
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3847 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3848 else if (fun_nargs < max_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3849 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3850 Lisp_Object *p = spacious_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3851
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3852 /* Default optionals to nil */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3853 while (fun_nargs--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3854 *p++ = *fun_args++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3855 while (p - spacious_args < max_args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3856 *p++ = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3857
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3858 fun_args = spacious_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3859 goto funcall_subr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3860 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3861 else if (max_args == MANY)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3862 {
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3863 PROFILE_ENTER_FUNCTION ();
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3864 val = SUBR_FUNCTION (subr, MANY) (fun_nargs, fun_args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3865 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3866 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3867 else if (max_args == UNEVALLED) /* Can't funcall a special form */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3868 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3869 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3870 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3871 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3872 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3873 wrong_number_of_arguments:
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3874 val = signal_wrong_number_of_arguments_error (fun, fun_nargs);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3875 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3876 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3877 else if (COMPILED_FUNCTIONP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3878 {
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3879 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3880 val = funcall_compiled_function (fun, fun_nargs, fun_args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3881 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3882 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3883 else if (CONSP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3884 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3885 Lisp_Object funcar = XCAR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3886
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3887 if (EQ (funcar, Qlambda))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3888 {
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3889 PROFILE_ENTER_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3890 val = funcall_lambda (fun, fun_nargs, fun_args);
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
3891 PROFILE_EXIT_FUNCTION ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3892 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3893 else if (EQ (funcar, Qautoload))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3894 {
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3895 /* do_autoload GCPROs both arguments */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3896 do_autoload (fun, args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3897 goto retry;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3898 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3899 else /* Can't funcall a macro */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3900 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3901 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3902 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3903 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3904 else if (UNBOUNDP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3905 {
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3906 val = signal_void_function_error (args[0]);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3907 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3908 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3909 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3910 invalid_function:
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
3911 val = signal_invalid_function_error (fun);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3912 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3913
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3914 lisp_eval_depth--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3915 if (backtrace.debug_on_exit)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3916 val = do_debug_on_exit (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3917 POP_BACKTRACE (backtrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3918 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3919 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3920
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3921 DEFUN ("functionp", Ffunctionp, 1, 1, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3922 Return t if OBJECT can be called as a function, else nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3923 A function is an object that can be applied to arguments,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3924 using for example `funcall' or `apply'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3925 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3926 (object))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3927 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3928 if (SYMBOLP (object))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3929 object = indirect_function (object, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3930
919
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3931 if (COMPILED_FUNCTIONP (object) || SUBRP (object))
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3932 return Qt;
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3933 if (CONSP (object))
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3934 {
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3935 Lisp_Object car = XCAR (object);
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3936 if (EQ (car, Qlambda))
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3937 return Qt;
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3938 if (EQ (car, Qautoload)
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3939 && NILP (Fcar_safe (Fcdr_safe (Fcdr_safe (Fcdr_safe (XCDR (object)))))))
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3940 return Qt;
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3941 }
111c4f2ed9c9 [xemacs-hg @ 2002-07-14 09:43:52 by adrian]
adrian
parents: 887
diff changeset
3942 return Qnil;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3943 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3944
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3945 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3946 function_argcount (Lisp_Object function, int function_min_args_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3947 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3948 Lisp_Object orig_function = function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3949 Lisp_Object arglist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3950
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3951 retry:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3952
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3953 if (SYMBOLP (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3954 function = indirect_function (function, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3956 if (SUBRP (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3957 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3958 /* Using return with the ?: operator tickles a DEC CC compiler bug. */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3959 if (function_min_args_p)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3960 return Fsubr_min_args (function);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3961 else
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3962 return Fsubr_max_args (function);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3963 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3964 else if (COMPILED_FUNCTIONP (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3965 {
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3966 Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (function);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3967
1737
68ed93de81b7 [xemacs-hg @ 2003-10-10 11:50:56 by stephent]
stephent
parents: 1726
diff changeset
3968 if (!OPAQUEP (f->instructions))
68ed93de81b7 [xemacs-hg @ 2003-10-10 11:50:56 by stephent]
stephent
parents: 1726
diff changeset
3969 /* Lazily munge the instructions into a more efficient form */
68ed93de81b7 [xemacs-hg @ 2003-10-10 11:50:56 by stephent]
stephent
parents: 1726
diff changeset
3970 /* Needed to set max_args */
68ed93de81b7 [xemacs-hg @ 2003-10-10 11:50:56 by stephent]
stephent
parents: 1726
diff changeset
3971 optimize_compiled_function (function);
68ed93de81b7 [xemacs-hg @ 2003-10-10 11:50:56 by stephent]
stephent
parents: 1726
diff changeset
3972
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3973 if (function_min_args_p)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3974 return make_int (f->min_args);
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3975 else if (f->max_args == MANY)
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3976 return Qnil;
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3977 else
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
3978 return make_int (f->max_args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3979 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3980 else if (CONSP (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3981 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3982 Lisp_Object funcar = XCAR (function);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3983
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3984 if (EQ (funcar, Qmacro))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3985 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3986 function = XCDR (function);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3987 goto retry;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3988 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3989 else if (EQ (funcar, Qautoload))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3990 {
970
0dc7756a58c4 [xemacs-hg @ 2002-08-22 11:31:39 by stephent]
stephent
parents: 938
diff changeset
3991 /* do_autoload GCPROs both arguments */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3992 do_autoload (function, orig_function);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3993 function = orig_function;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3994 goto retry;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3995 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3996 else if (EQ (funcar, Qlambda))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3997 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3998 arglist = Fcar (XCDR (function));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3999 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4000 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4001 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4002 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4003 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4004 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4005 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4006 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4007 invalid_function:
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4008 return signal_invalid_function_error (orig_function);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4009 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4010
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4011 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4012 int argcount = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4013
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4014 EXTERNAL_LIST_LOOP_2 (arg, arglist)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4015 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4016 if (EQ (arg, Qand_optional))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4017 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4018 if (function_min_args_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4019 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4020 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4021 else if (EQ (arg, Qand_rest))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4022 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4023 if (function_min_args_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4024 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4025 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4026 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4027 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4028 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4029 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4030 argcount++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4031 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4032 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4033
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4034 return make_int (argcount);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4035 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4036 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4037
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4038 DEFUN ("function-min-args", Ffunction_min_args, 1, 1, 0, /*
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
4039 Return the minimum number of arguments a function may be called with.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4040 The function may be any form that can be passed to `funcall',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4041 any special form, or any macro.
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4042
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4043 To check if a function can be called with a specified number of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4044 arguments, use `function-allows-args'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4045 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4046 (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4047 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4048 return function_argcount (function, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4049 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4050
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4051 DEFUN ("function-max-args", Ffunction_max_args, 1, 1, 0, /*
617
af57a77cbc92 [xemacs-hg @ 2001-06-18 07:09:50 by ben]
ben
parents: 609
diff changeset
4052 Return the maximum number of arguments a function may be called with.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4053 The function may be any form that can be passed to `funcall',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4054 any special form, or any macro.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4055 If the function takes an arbitrary number of arguments or is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4056 a built-in special form, nil is returned.
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4057
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4058 To check if a function can be called with a specified number of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4059 arguments, use `function-allows-args'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4060 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4061 (function))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4062 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4063 return function_argcount (function, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4064 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4065
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4066
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4067 DEFUN ("apply", Fapply, 2, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4068 Call FUNCTION with the remaining args, using the last arg as a list of args.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4069 Thus, (apply '+ 1 2 '(3 4)) returns 10.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4070 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4071 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4072 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4073 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4074 Lisp_Object fun = args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4075 Lisp_Object spread_arg = args [nargs - 1];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4076 int numargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4077 int funcall_nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4078
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4079 GET_EXTERNAL_LIST_LENGTH (spread_arg, numargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4080
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4081 if (numargs == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4082 /* (apply foo 0 1 '()) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4083 return Ffuncall (nargs - 1, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4084 else if (numargs == 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4085 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4086 /* (apply foo 0 1 '(2)) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4087 args [nargs - 1] = XCAR (spread_arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4088 return Ffuncall (nargs, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4089 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4090
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4091 /* -1 for function, -1 for spread arg */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4092 numargs = nargs - 2 + numargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4093 /* +1 for function */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4094 funcall_nargs = 1 + numargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4095
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4096 if (SYMBOLP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4097 fun = indirect_function (fun, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4098
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4099 if (SUBRP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4100 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4101 Lisp_Subr *subr = XSUBR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4102 int max_args = subr->max_args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4103
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4104 if (numargs < subr->min_args
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4105 || (max_args >= 0 && max_args < numargs))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4106 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4107 /* Let funcall get the error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4108 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4109 else if (max_args > numargs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4110 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4111 /* Avoid having funcall cons up yet another new vector of arguments
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4112 by explicitly supplying nil's for optional values */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4113 funcall_nargs += (max_args - numargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4114 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4115 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4116 else if (UNBOUNDP (fun))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4117 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4118 /* Let funcall get the error */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4119 fun = args[0];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4120 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4121
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4122 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4123 REGISTER int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4124 Lisp_Object *funcall_args = alloca_array (Lisp_Object, funcall_nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4125 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4126
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4127 GCPRO1 (*funcall_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4128 gcpro1.nvars = funcall_nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4129
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4130 /* Copy in the unspread args */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4131 memcpy (funcall_args, args, (nargs - 1) * sizeof (Lisp_Object));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4132 /* Spread the last arg we got. Its first element goes in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4133 the slot that it used to occupy, hence this value of I. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4134 for (i = nargs - 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4135 !NILP (spread_arg); /* i < 1 + numargs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4136 i++, spread_arg = XCDR (spread_arg))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4137 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4138 funcall_args [i] = XCAR (spread_arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4139 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4140 /* Supply nil for optional args (to subrs) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4141 for (; i < funcall_nargs; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4142 funcall_args[i] = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4143
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4144
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4145 RETURN_UNGCPRO (Ffuncall (funcall_nargs, funcall_args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4146 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4147 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4148
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4149
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4150 /* Apply lambda list FUN to the NARGS evaluated arguments in ARGS and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4151 return the result of evaluation. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4152
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4153 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4154 funcall_lambda (Lisp_Object fun, int nargs, Lisp_Object args[])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4155 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4156 /* This function can GC */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4157 Lisp_Object arglist, body, tail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4158 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4159 REGISTER int i = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4160
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4161 tail = XCDR (fun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4162
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4163 if (!CONSP (tail))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4164 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4165
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4166 arglist = XCAR (tail);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4167 body = XCDR (tail);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4168
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4169 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4170 int optional = 0, rest = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4171
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4172 EXTERNAL_LIST_LOOP_2 (symbol, arglist)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4173 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4174 if (!SYMBOLP (symbol))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4175 goto invalid_function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4176 if (EQ (symbol, Qand_rest))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4177 rest = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4178 else if (EQ (symbol, Qand_optional))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4179 optional = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4180 else if (rest)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4181 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4182 specbind (symbol, Flist (nargs - i, &args[i]));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4183 i = nargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4184 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4185 else if (i < nargs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4186 specbind (symbol, args[i++]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4187 else if (!optional)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4188 goto wrong_number_of_arguments;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4189 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4190 specbind (symbol, Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4191 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4192 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4193
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4194 if (i < nargs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4195 goto wrong_number_of_arguments;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4196
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4197 return unbind_to_1 (speccount, Fprogn (body));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4198
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4199 wrong_number_of_arguments:
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
4200 return signal_wrong_number_of_arguments_error (fun, nargs);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4201
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4202 invalid_function:
436
080151679be2 Import from CVS: tag r21-2-26
cvs
parents: 428
diff changeset
4203 return signal_invalid_function_error (fun);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4204 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4205
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4206
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4207 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4208 /* Run hook variables in various ways. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4209 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4210
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4211 DEFUN ("run-hooks", Frun_hooks, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4212 Run each hook in HOOKS. Major mode functions use this.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4213 Each argument should be a symbol, a hook variable.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4214 These symbols are processed in the order specified.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4215 If a hook symbol has a non-nil value, that value may be a function
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4216 or a list of functions to be called to run the hook.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4217 If the value is a function, it is called with no arguments.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4218 If it is a list, the elements are called, in order, with no arguments.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4219
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4220 To make a hook variable buffer-local, use `make-local-hook',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4221 not `make-local-variable'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4222 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4223 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4224 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4225 REGISTER int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4226
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4227 for (i = 0; i < nargs; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4228 run_hook_with_args (1, args + i, RUN_HOOKS_TO_COMPLETION);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4229
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4230 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4231 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4232
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4233 DEFUN ("run-hook-with-args", Frun_hook_with_args, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4234 Run HOOK with the specified arguments ARGS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4235 HOOK should be a symbol, a hook variable. If HOOK has a non-nil
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4236 value, that value may be a function or a list of functions to be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4237 called to run the hook. If the value is a function, it is called with
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4238 the given arguments and its return value is returned. If it is a list
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4239 of functions, those functions are called, in order,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4240 with the given arguments ARGS.
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
4241 It is best not to depend on the value returned by `run-hook-with-args',
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4242 as that may change.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4243
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4244 To make a hook variable buffer-local, use `make-local-hook',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4245 not `make-local-variable'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4246 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4247 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4248 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4249 return run_hook_with_args (nargs, args, RUN_HOOKS_TO_COMPLETION);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4250 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4251
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4252 DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4253 Run HOOK with the specified arguments ARGS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4254 HOOK should be a symbol, a hook variable. Its value should
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4255 be a list of functions. We call those functions, one by one,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4256 passing arguments ARGS to each of them, until one of them
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4257 returns a non-nil value. Then we return that value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4258 If all the functions return nil, we return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4259
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4260 To make a hook variable buffer-local, use `make-local-hook',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4261 not `make-local-variable'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4262 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4263 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4264 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4265 return run_hook_with_args (nargs, args, RUN_HOOKS_UNTIL_SUCCESS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4266 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4267
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4268 DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure, 1, MANY, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4269 Run HOOK with the specified arguments ARGS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4270 HOOK should be a symbol, a hook variable. Its value should
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4271 be a list of functions. We call those functions, one by one,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4272 passing arguments ARGS to each of them, until one of them
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4273 returns nil. Then we return nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4274 If all the functions return non-nil, we return non-nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4275
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4276 To make a hook variable buffer-local, use `make-local-hook',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4277 not `make-local-variable'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4278 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4279 (int nargs, Lisp_Object *args))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4280 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4281 return run_hook_with_args (nargs, args, RUN_HOOKS_UNTIL_FAILURE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4282 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4283
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4284 /* ARGS[0] should be a hook symbol.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4285 Call each of the functions in the hook value, passing each of them
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4286 as arguments all the rest of ARGS (all NARGS - 1 elements).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4287 COND specifies a condition to test after each call
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4288 to decide whether to stop.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4289 The caller (or its caller, etc) must gcpro all of ARGS,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4290 except that it isn't necessary to gcpro ARGS[0]. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4291
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4292 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4293 run_hook_with_args_in_buffer (struct buffer *buf, int nargs, Lisp_Object *args,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4294 enum run_hooks_condition cond)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4295 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4296 Lisp_Object sym, val, ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4297
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4298 if (!initialized || preparing_for_armageddon)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4299 /* We need to bail out of here pronto. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4300 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4301
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4302 /* Whenever gc_in_progress is true, preparing_for_armageddon
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4303 will also be true unless something is really hosed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4304 assert (!gc_in_progress);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4305
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4306 sym = args[0];
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4307 val = symbol_value_in_buffer (sym, wrap_buffer (buf));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4308 ret = (cond == RUN_HOOKS_UNTIL_FAILURE ? Qt : Qnil);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4309
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4310 if (UNBOUNDP (val) || NILP (val))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4311 return ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4312 else if (!CONSP (val) || EQ (XCAR (val), Qlambda))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4313 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4314 args[0] = val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4315 return Ffuncall (nargs, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4316 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4317 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4318 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4319 struct gcpro gcpro1, gcpro2, gcpro3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4320 Lisp_Object globals = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4321 GCPRO3 (sym, val, globals);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4323 for (;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4324 CONSP (val) && ((cond == RUN_HOOKS_TO_COMPLETION)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4325 || (cond == RUN_HOOKS_UNTIL_SUCCESS ? NILP (ret)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4326 : !NILP (ret)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4327 val = XCDR (val))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4328 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4329 if (EQ (XCAR (val), Qt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4330 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4331 /* t indicates this hook has a local binding;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4332 it means to run the global binding too. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4333 globals = Fdefault_value (sym);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4334
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4335 if ((! CONSP (globals) || EQ (XCAR (globals), Qlambda)) &&
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4336 ! NILP (globals))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4337 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4338 args[0] = globals;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4339 ret = Ffuncall (nargs, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4340 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4341 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4342 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4343 for (;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4344 CONSP (globals) && ((cond == RUN_HOOKS_TO_COMPLETION)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4345 || (cond == RUN_HOOKS_UNTIL_SUCCESS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4346 ? NILP (ret)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4347 : !NILP (ret)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4348 globals = XCDR (globals))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4349 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4350 args[0] = XCAR (globals);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4351 /* In a global value, t should not occur. If it does, we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4352 must ignore it to avoid an endless loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4353 if (!EQ (args[0], Qt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4354 ret = Ffuncall (nargs, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4355 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4356 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4357 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4358 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4359 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4360 args[0] = XCAR (val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4361 ret = Ffuncall (nargs, args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4362 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4363 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4364
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4365 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4366 return ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4367 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4368 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4369
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4370 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4371 run_hook_with_args (int nargs, Lisp_Object *args,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4372 enum run_hooks_condition cond)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4373 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4374 return run_hook_with_args_in_buffer (current_buffer, nargs, args, cond);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4375 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4376
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4377 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4378
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4379 /* From FSF 19.30, not currently used; seems like a big kludge. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4380
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4381 /* Run a hook symbol ARGS[0], but use FUNLIST instead of the actual
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4382 present value of that symbol.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4383 Call each element of FUNLIST,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4384 passing each of them the rest of ARGS.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4385 The caller (or its caller, etc) must gcpro all of ARGS,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4386 except that it isn't necessary to gcpro ARGS[0]. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4387
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4388 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4389 run_hook_list_with_args (Lisp_Object funlist, int nargs, Lisp_Object *args)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4390 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4391 omitted;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4392 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4393
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4394 #endif /* 0 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4395
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4396 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4397 va_run_hook_with_args (Lisp_Object hook_var, int nargs, ...)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4398 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4399 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4400 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4401 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4402 va_list vargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4403 Lisp_Object *funcall_args = alloca_array (Lisp_Object, 1 + nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4404
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4405 va_start (vargs, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4406 funcall_args[0] = hook_var;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4407 for (i = 0; i < nargs; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4408 funcall_args[i + 1] = va_arg (vargs, Lisp_Object);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4409 va_end (vargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4410
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4411 GCPRO1 (*funcall_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4412 gcpro1.nvars = nargs + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4413 run_hook_with_args (nargs + 1, funcall_args, RUN_HOOKS_TO_COMPLETION);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4414 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4415 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4416
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4417 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4418 va_run_hook_with_args_in_buffer (struct buffer *buf, Lisp_Object hook_var,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4419 int nargs, ...)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4420 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4421 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4422 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4423 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4424 va_list vargs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4425 Lisp_Object *funcall_args = alloca_array (Lisp_Object, 1 + nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4426
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4427 va_start (vargs, nargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4428 funcall_args[0] = hook_var;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4429 for (i = 0; i < nargs; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4430 funcall_args[i + 1] = va_arg (vargs, Lisp_Object);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4431 va_end (vargs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4432
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4433 GCPRO1 (*funcall_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4434 gcpro1.nvars = nargs + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4435 run_hook_with_args_in_buffer (buf, nargs + 1, funcall_args,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4436 RUN_HOOKS_TO_COMPLETION);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4437 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4438 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4439
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4440 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4441 run_hook (Lisp_Object hook)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4442 {
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4443 return run_hook_with_args (1, &hook, RUN_HOOKS_TO_COMPLETION);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4444 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4445
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4446
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4447 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4448 /* Front-ends to eval, funcall, apply */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4449 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4450
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4451 /* Apply fn to arg */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4452 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4453 apply1 (Lisp_Object fn, Lisp_Object arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4454 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4455 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4456 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4457 Lisp_Object args[2];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4458
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4459 if (NILP (arg))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4460 return Ffuncall (1, &fn);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4461 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4462 gcpro1.nvars = 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4463 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4464 args[1] = arg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4465 RETURN_UNGCPRO (Fapply (2, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4466 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4467
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4468 /* Call function fn on no arguments */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4469 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4470 call0 (Lisp_Object fn)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4471 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4472 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4473 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4474
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4475 GCPRO1 (fn);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4476 RETURN_UNGCPRO (Ffuncall (1, &fn));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4477 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4478
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4479 /* Call function fn with argument arg0 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4480 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4481 call1 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4482 Lisp_Object arg0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4483 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4484 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4485 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4486 Lisp_Object args[2];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4487 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4488 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4489 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4490 gcpro1.nvars = 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4491 RETURN_UNGCPRO (Ffuncall (2, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4492 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4493
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4494 /* Call function fn with arguments arg0, arg1 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4495 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4496 call2 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4497 Lisp_Object arg0, Lisp_Object arg1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4498 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4499 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4500 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4501 Lisp_Object args[3];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4502 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4503 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4504 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4505 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4506 gcpro1.nvars = 3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4507 RETURN_UNGCPRO (Ffuncall (3, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4508 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4509
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4510 /* Call function fn with arguments arg0, arg1, arg2 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4511 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4512 call3 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4513 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4514 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4515 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4516 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4517 Lisp_Object args[4];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4518 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4519 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4520 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4521 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4522 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4523 gcpro1.nvars = 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4524 RETURN_UNGCPRO (Ffuncall (4, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4525 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4526
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4527 /* Call function fn with arguments arg0, arg1, arg2, arg3 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4528 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4529 call4 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4530 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4531 Lisp_Object arg3)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4532 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4533 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4534 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4535 Lisp_Object args[5];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4536 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4537 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4538 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4539 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4540 args[4] = arg3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4541 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4542 gcpro1.nvars = 5;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4543 RETURN_UNGCPRO (Ffuncall (5, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4544 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4545
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4546 /* Call function fn with arguments arg0, arg1, arg2, arg3, arg4 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4547 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4548 call5 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4549 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4550 Lisp_Object arg3, Lisp_Object arg4)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4551 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4552 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4553 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4554 Lisp_Object args[6];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4555 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4556 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4557 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4558 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4559 args[4] = arg3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4560 args[5] = arg4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4561 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4562 gcpro1.nvars = 6;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4563 RETURN_UNGCPRO (Ffuncall (6, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4564 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4565
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4566 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4567 call6 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4568 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4569 Lisp_Object arg3, Lisp_Object arg4, Lisp_Object arg5)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4570 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4571 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4572 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4573 Lisp_Object args[7];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4574 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4575 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4576 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4577 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4578 args[4] = arg3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4579 args[5] = arg4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4580 args[6] = arg5;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4581 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4582 gcpro1.nvars = 7;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4583 RETURN_UNGCPRO (Ffuncall (7, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4584 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4585
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4586 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4587 call7 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4588 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4589 Lisp_Object arg3, Lisp_Object arg4, Lisp_Object arg5,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4590 Lisp_Object arg6)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4591 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4592 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4593 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4594 Lisp_Object args[8];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4595 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4596 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4597 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4598 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4599 args[4] = arg3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4600 args[5] = arg4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4601 args[6] = arg5;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4602 args[7] = arg6;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4603 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4604 gcpro1.nvars = 8;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4605 RETURN_UNGCPRO (Ffuncall (8, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4606 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4607
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4608 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4609 call8 (Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4610 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4611 Lisp_Object arg3, Lisp_Object arg4, Lisp_Object arg5,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4612 Lisp_Object arg6, Lisp_Object arg7)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4613 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4614 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4615 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4616 Lisp_Object args[9];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4617 args[0] = fn;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4618 args[1] = arg0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4619 args[2] = arg1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4620 args[3] = arg2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4621 args[4] = arg3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4622 args[5] = arg4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4623 args[6] = arg5;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4624 args[7] = arg6;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4625 args[8] = arg7;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4626 GCPRO1 (args[0]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4627 gcpro1.nvars = 9;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4628 RETURN_UNGCPRO (Ffuncall (9, args));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4629 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4630
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4631 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4632 call0_in_buffer (struct buffer *buf, Lisp_Object fn)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4633 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4634 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4635 return call0 (fn);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4636 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4637 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4638 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4639 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4640 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4641 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4642 val = call0 (fn);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4643 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4644 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4645 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4646 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4647
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4648 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4649 call1_in_buffer (struct buffer *buf, Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4650 Lisp_Object arg0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4651 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4652 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4653 return call1 (fn, arg0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4654 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4655 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4656 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4657 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4658 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4659 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4660 val = call1 (fn, arg0);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4661 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4662 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4663 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4664 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4665
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4666 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4667 call2_in_buffer (struct buffer *buf, Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4668 Lisp_Object arg0, Lisp_Object arg1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4669 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4670 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4671 return call2 (fn, arg0, arg1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4672 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4673 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4674 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4675 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4676 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4677 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4678 val = call2 (fn, arg0, arg1);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4679 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4680 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4681 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4682 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4683
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4684 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4685 call3_in_buffer (struct buffer *buf, Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4686 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4687 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4688 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4689 return call3 (fn, arg0, arg1, arg2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4690 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4691 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4692 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4693 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4694 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4695 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4696 val = call3 (fn, arg0, arg1, arg2);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4697 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4698 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4699 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4700 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4701
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4702 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4703 call4_in_buffer (struct buffer *buf, Lisp_Object fn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4704 Lisp_Object arg0, Lisp_Object arg1, Lisp_Object arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4705 Lisp_Object arg3)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4706 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4707 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4708 return call4 (fn, arg0, arg1, arg2, arg3);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4709 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4710 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4711 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4712 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4713 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4714 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4715 val = call4 (fn, arg0, arg1, arg2, arg3);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4716 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4717 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4718 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4719 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4720
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4721 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4722 eval_in_buffer (struct buffer *buf, Lisp_Object form)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4723 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4724 if (current_buffer == buf)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4725 return Feval (form);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4726 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4727 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4728 Lisp_Object val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4729 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4730 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4731 set_buffer_internal (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4732 val = Feval (form);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
4733 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4734 return val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4735 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4736 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4737
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4738
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4739 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4740 /* Error-catching front-ends to eval, funcall, apply */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4741 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4742
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4743 int
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4744 get_inhibit_flags (void)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4745 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4746 return inhibit_flags;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4747 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4748
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4749 void
2286
04bc9d2f42c7 [xemacs-hg @ 2004-09-20 19:18:55 by james]
james
parents: 2268
diff changeset
4750 check_allowed_operation (int what, Lisp_Object obj, Lisp_Object UNUSED (prop))
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4751 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4752 if (inhibit_flags & INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4753 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4754 if (what == OPERATION_MODIFY_BUFFER_TEXT && BUFFERP (obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4755 && NILP (memq_no_quit (obj, Vmodifiable_buffers)))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4756 invalid_change
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4757 ("Modification of this buffer not currently permitted", obj);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4758 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4759 if (inhibit_flags & INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4760 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4761 if (what == OPERATION_DELETE_OBJECT
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4762 && (BUFFERP (obj) || WINDOWP (obj) || FRAMEP (obj) || DEVICEP (obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4763 || CONSOLEP (obj))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4764 && NILP (memq_no_quit (obj, Vdeletable_permanent_display_objects)))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4765 invalid_change
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4766 ("Deletion of this object not currently permitted", obj);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4767 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4768 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4769
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4770 void
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4771 note_object_created (Lisp_Object obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4772 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4773 if (inhibit_flags & INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4774 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4775 if (BUFFERP (obj))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4776 Vmodifiable_buffers = Fcons (obj, Vmodifiable_buffers);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4777 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4778 if (inhibit_flags & INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4779 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4780 if (BUFFERP (obj) || WINDOWP (obj) || FRAMEP (obj) || DEVICEP (obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4781 || CONSOLEP (obj))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4782 Vdeletable_permanent_display_objects =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4783 Fcons (obj, Vdeletable_permanent_display_objects);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4784 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4785 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4786
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4787 void
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4788 note_object_deleted (Lisp_Object obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4789 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4790 if (inhibit_flags & INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4791 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4792 if (BUFFERP (obj))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4793 Vmodifiable_buffers = delq_no_quit (obj, Vmodifiable_buffers);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4794 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4795 if (inhibit_flags & INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4796 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4797 if (BUFFERP (obj) || WINDOWP (obj) || FRAMEP (obj) || DEVICEP (obj)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4798 || CONSOLEP (obj))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4799 Vdeletable_permanent_display_objects =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4800 delq_no_quit (obj, Vdeletable_permanent_display_objects);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4801 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4802 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4803
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4804 struct call_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4805 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4806 Lisp_Object catchtag;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4807 Lisp_Object error_conditions;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4808 Lisp_Object data;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4809 Lisp_Object backtrace;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4810 Lisp_Object warning_class;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4811
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
4812 const CIbyte *warning_string;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4813 Lisp_Object (*fun) (void *);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4814 void *arg;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4815 };
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4816
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
4817 static DECLARE_DOESNT_RETURN_TYPE
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
4818 (Lisp_Object, flagged_a_squirmer (Lisp_Object, Lisp_Object, Lisp_Object));
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
4819
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
4820 static DOESNT_RETURN_TYPE (Lisp_Object)
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4821 flagged_a_squirmer (Lisp_Object error_conditions, Lisp_Object data,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4822 Lisp_Object opaque)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4823 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4824 struct call_trapping_problems *p =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4825 (struct call_trapping_problems *) get_opaque_ptr (opaque);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4826
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
4827 if (!(inhibit_flags & INHIBIT_WARNING_ISSUE)
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
4828 && !warning_will_be_discarded (current_warning_level ()))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4829 {
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4830 struct gcpro gcpro1;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4831 Lisp_Object lstream = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4832 int speccount = specpdl_depth ();
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4833
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4834 /* We're no longer protected against errors or quit here, so at
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4835 least let's temporarily inhibit quit. We definitely do not
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4836 want to inhibit quit during the calling of the function
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4837 itself!!!!!!!!!!! */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4838
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4839 specbind (Qinhibit_quit, Qt);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4840
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4841 GCPRO1 (lstream);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4842 lstream = make_resizing_buffer_output_stream ();
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4843 Fbacktrace (lstream, Qt);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4844 Lstream_flush (XLSTREAM (lstream));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4845 p->backtrace = resizing_buffer_to_lisp_string (XLSTREAM (lstream));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4846 Lstream_delete (XLSTREAM (lstream));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4847 UNGCPRO;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4848
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4849 unbind_to (speccount);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4850 }
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4851 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4852 p->backtrace = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4854 p->error_conditions = error_conditions;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4855 p->data = data;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4856
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4857 Fthrow (p->catchtag, Qnil);
2268
61855263cb07 [xemacs-hg @ 2004-09-14 14:32:29 by james]
james
parents: 2267
diff changeset
4858 RETURN_NOT_REACHED (Qnil);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4859 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4860
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4861 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4862 call_trapping_problems_2 (Lisp_Object opaque)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4863 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4864 struct call_trapping_problems *p =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4865 (struct call_trapping_problems *) get_opaque_ptr (opaque);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4866
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4867 return (p->fun) (p->arg);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4868 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4869
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4870 static Lisp_Object
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4871 call_trapping_problems_1 (Lisp_Object opaque)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4872 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4873 return call_with_condition_handler (flagged_a_squirmer, opaque,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4874 call_trapping_problems_2, opaque);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4875 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4876
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4877 static void
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4878 issue_call_trapping_problems_warning (Lisp_Object warning_class,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4879 const CIbyte *warning_string,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4880 struct call_trapping_problems_result *p)
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4881 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4882 if (!warning_will_be_discarded (current_warning_level ()))
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4883 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4884 int depth = specpdl_depth ();
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4885
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4886 /* We're no longer protected against errors or quit here, so at
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4887 least let's temporarily inhibit quit. */
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4888 specbind (Qinhibit_quit, Qt);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4889
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4890 if (p->caught_throw)
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4891 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4892 Lisp_Object errstr =
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4893 emacs_sprintf_string_lisp
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4894 ("%s: Attempt to throw outside of function "
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4895 "to catch `%s' with value `%s'",
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4896 Qnil, 3,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4897 build_msg_string (warning_string ? warning_string : "error"),
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4898 p->thrown_tag, p->thrown_value);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4899 warn_when_safe_lispobj (Qerror, current_warning_level (), errstr);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4900 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4901 else if (p->caught_error)
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4902 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4903 Lisp_Object errstr;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4904 /* #### This should call
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4905 (with-output-to-string (display-error (cons error_conditions
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4906 data))
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4907 but that stuff is all in Lisp currently. */
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4908 errstr =
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4909 emacs_sprintf_string_lisp
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4910 ("%s: (%s %s)\n\nBacktrace follows:\n\n%s",
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4911 Qnil, 4,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4912 build_msg_string (warning_string ? warning_string : "error"),
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4913 p->error_conditions, p->data, p->backtrace);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4914
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4915 warn_when_safe_lispobj (warning_class, current_warning_level (),
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4916 errstr);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4917 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4918
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4919 unbind_to (depth);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4920 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4921 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4922
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4923 /* Turn on the trapping flags in FLAGS -- see call_trapping_problems().
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4924 This cannot handle INTERNAL_INHIBIT_THROWS() or INTERNAL_INHIBIT_ERRORS
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4925 (because they ultimately boil down to a setjmp()!) -- you must directly
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4926 use call_trapping_problems() for that. Turn the flags off with
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4927 unbind_to(). Returns the "canonicalized" flags (particularly in the
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4928 case of INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY, which is shorthand for
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4929 various other flags). */
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4930
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4931 int
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4932 set_trapping_problems_flags (int flags)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4933 {
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4934 int new_inhibit_flags;
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4935
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4936 if (flags & INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4937 flags |= INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4938 | INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4939 | INHIBIT_ENTERING_DEBUGGER
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4940 | INHIBIT_WARNING_ISSUE
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4941 | INHIBIT_GC;
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4942
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4943 new_inhibit_flags = inhibit_flags | flags;
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4944 if (new_inhibit_flags != inhibit_flags)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4945 internal_bind_int (&inhibit_flags, new_inhibit_flags);
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4946
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4947 if (flags & INHIBIT_QUIT)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4948 specbind (Qinhibit_quit, Qt);
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4949
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4950 if (flags & UNINHIBIT_QUIT)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4951 begin_do_check_for_quit ();
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4952
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4953 if (flags & INHIBIT_GC)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4954 begin_gc_forbidden ();
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4955
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4956 /* #### If we have nested calls to call_trapping_problems(), and the
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4957 inner one creates some buffers/etc., should the outer one be able
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4958 to delete them? I think so, but it means we need to combine rather
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4959 than just reset the value. */
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4960 if (flags & INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4961 internal_bind_lisp_object (&Vdeletable_permanent_display_objects, Qnil);
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4962
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4963 if (flags & INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION)
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4964 internal_bind_lisp_object (&Vmodifiable_buffers, Qnil);
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4965
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4966 return flags;
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4967 }
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
4968
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4969 /* This is equivalent to (*fun) (arg), except that various conditions
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4970 can be trapped or inhibited, according to FLAGS.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4971
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4972 If FLAGS does not contain NO_INHIBIT_ERRORS, when an error occurs,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4973 the error is caught and a warning is issued, specifying the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4974 specific error that occurred and a backtrace. In that case,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4975 WARNING_STRING should be given, and will be printed at the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4976 beginning of the error to indicate where the error occurred.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4977
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4978 If FLAGS does not contain NO_INHIBIT_THROWS, all attempts to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4979 `throw' out of the function being called are trapped, and a warning
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4980 issued. (Again, WARNING_STRING should be given.)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4981
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4982 (If FLAGS contains INHIBIT_WARNING_ISSUE, no warnings are issued;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4983 this applies to recursive invocations of call_trapping_problems, too.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4984
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4985 If FLAGS contains POSTPONE_WARNING_ISSUE, no warnings are issued;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4986 but values useful for generating a warning are still computed (in
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4987 particular, the backtrace), so that the calling function can issue
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4988 a warning.
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
4989
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4990 If FLAGS contains ISSUE_WARNINGS_AT_DEBUG_LEVEL, warnings will be
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4991 issued, but at level `debug', which normally is below the minimum
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4992 specified by `log-warning-minimum-level', meaning such warnings will
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4993 be ignored entirely. The user can change this variable, however,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4994 to see the warnings.)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4995
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4996 Note: If neither of NO_INHIBIT_THROWS or NO_INHIBIT_ERRORS is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4997 given, you are *guaranteed* that there will be no non-local exits
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4998 out of this function.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
4999
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5000 If FLAGS contains INHIBIT_QUIT, QUIT using C-g is inhibited. (This
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5001 is *rarely* a good idea. Unless you use NO_INHIBIT_ERRORS, QUIT is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5002 automatically caught as well, and treated as an error; you can
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5003 check for this using EQ (problems->error_conditions, Qquit).
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5004
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5005 If FLAGS contains UNINHIBIT_QUIT, QUIT checking will be explicitly
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5006 turned on. (It will abort the code being called, but will still be
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5007 trapped and reported as an error, unless NO_INHIBIT_ERRORS is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5008 given.) This is useful when QUIT checking has been turned off by a
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5009 higher-level caller.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5010
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5011 If FLAGS contains INHIBIT_GC, garbage collection is inhibited.
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
5012 This is useful for Lisp called within redisplay, for example.
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5013
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5014 If FLAGS contains INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5015 Lisp code is not allowed to delete any window, buffers, frames, devices,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5016 or consoles that were already in existence at the time this function
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5017 was called. (However, it's perfectly legal for code to create a new
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5018 buffer and then delete it.)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5019
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5020 #### It might be useful to have a flag that inhibits deletion of a
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5021 specific permanent display object and everything it's attached to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5022 (e.g. a window, and the buffer, frame, device, and console it's
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5023 attached to.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5024
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5025 If FLAGS contains INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION, Lisp
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5026 code is not allowed to modify the text of any buffers that were
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5027 already in existence at the time this function was called.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5028 (However, it's perfectly legal for code to create a new buffer and
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5029 then modify its text.)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5030
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5031 [These last two flags are implemented using global variables
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5032 Vdeletable_permanent_display_objects and Vmodifiable_buffers,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5033 which keep track of a list of all buffers or permanent display
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5034 objects created since the last time one of these flags was set.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5035 The code that deletes buffers, etc. and modifies buffers checks
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5036
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5037 (1) if the corresponding flag is set (through the global variable
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5038 inhibit_flags or its accessor function get_inhibit_flags()), and
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5039
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5040 (2) if the object to be modified or deleted is not in the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5041 appropriate list.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5042
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5043 If so, it signals an error.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5044
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5045 Recursive calls to call_trapping_problems() are allowed. In
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5046 the case of the two flags mentioned above, the current values
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5047 of the global variables are stored in an unwind-protect, and
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5048 they're reset to nil.]
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5049
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5050 If FLAGS contains INHIBIT_ENTERING_DEBUGGER, the debugger will not
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5051 be entered if an error occurs inside the Lisp code being called,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5052 even when the user has requested an error. In such case, a warning
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5053 is issued stating that access to the debugger is denied, unless
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5054 INHIBIT_WARNING_ISSUE has also been supplied. This is useful when
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5055 calling Lisp code inside redisplay, in menu callbacks, etc. because
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5056 in such cases either the display is in an inconsistent state or
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5057 doing window operations is explicitly forbidden by the OS, and the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5058 debugger would causes visual changes on the screen and might create
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5059 another frame.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5060
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5061 If FLAGS contains INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY, no
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5062 changes of any sort to extents, faces, glyphs, buffer text,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5063 specifiers relating to display, other variables relating to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5064 display, splitting, deleting, or resizing windows or frames,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5065 deleting buffers, windows, frames, devices, or consoles, etc. is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5066 allowed. This is for things called absolutely in the middle of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5067 redisplay, which expects things to be *exactly* the same after the
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5068 call as before. This isn't completely implemented and needs to be
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5069 thought out some more to determine exactly what its semantics are.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5070 For the moment, turning on this flag also turns on
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5071
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5072 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5073 INHIBIT_EXISTING_BUFFER_TEXT_MODIFICATION
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5074 INHIBIT_ENTERING_DEBUGGER
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5075 INHIBIT_WARNING_ISSUE
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5076 INHIBIT_GC
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5077
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5078 #### The following five flags are defined, but unimplemented:
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5079
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5080 #define INHIBIT_EXISTING_CODING_SYSTEM_DELETION (1<<6)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5081 #define INHIBIT_EXISTING_CHARSET_DELETION (1<<7)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5082 #define INHIBIT_PERMANENT_DISPLAY_OBJECT_CREATION (1<<8)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5083 #define INHIBIT_CODING_SYSTEM_CREATION (1<<9)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5084 #define INHIBIT_CHARSET_CREATION (1<<10)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5085
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5086 FLAGS containing CALL_WITH_SUSPENDED_ERRORS is a sign that
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5087 call_with_suspended_errors() was invoked. This exists only for
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5088 debugging purposes -- often we want to break when a signal happens,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5089 but ignore signals from call_with_suspended_errors(), because they
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5090 occur often and for legitimate reasons.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5091
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5092 If PROBLEM is non-zero, it should be a pointer to a structure into
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5093 which exact information about any occurring problems (either an
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5094 error or an attempted throw past this boundary).
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5095
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5096 If a problem occurred and aborted operation (error, quit, or
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5097 invalid throw), Qunbound is returned. Otherwise the return value
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5098 from the call to (*fun) (arg) is returned. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5099
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5100 Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5101 call_trapping_problems (Lisp_Object warning_class,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5102 const CIbyte *warning_string,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5103 int flags,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5104 struct call_trapping_problems_result *problem,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5105 Lisp_Object (*fun) (void *),
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5106 void *arg)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5107 {
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
5108 int speccount = specpdl_depth ();
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5109 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5110 struct call_trapping_problems package;
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5111 struct call_trapping_problems_result real_problem;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5112 Lisp_Object opaque, thrown_tag, tem;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5113 int thrown = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5114
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5115 assert (SYMBOLP (warning_class)); /* sanity-check */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5116 assert (!NILP (warning_class));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5117
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5118 flags ^= INTERNAL_INHIBIT_ERRORS | INTERNAL_INHIBIT_THROWS;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5119
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5120 package.warning_class = warning_class;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5121 package.warning_string = warning_string;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5122 package.fun = fun;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5123 package.arg = arg;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5124 package.catchtag =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5125 flags & INTERNAL_INHIBIT_THROWS ? Vcatch_everything_tag :
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5126 flags & INTERNAL_INHIBIT_ERRORS ? make_opaque_ptr (0) :
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5127 Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5128 package.error_conditions = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5129 package.data = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5130 package.backtrace = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5131
1318
b531bf8658e9 [xemacs-hg @ 2003-02-21 06:56:46 by ben]
ben
parents: 1313
diff changeset
5132 flags = set_trapping_problems_flags (flags);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5133
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5134 if (flags & (INTERNAL_INHIBIT_THROWS | INTERNAL_INHIBIT_ERRORS))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5135 opaque = make_opaque_ptr (&package);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5136 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5137 opaque = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5138
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5139 GCPRO5 (package.catchtag, package.error_conditions, package.data,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5140 package.backtrace, opaque);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5141
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5142 if (flags & INTERNAL_INHIBIT_ERRORS)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5143 /* We need a catch so that our condition-handler can throw back here
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5144 after printing the warning. (We print the warning in the stack
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5145 context of the error, so we can get a backtrace.) */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5146 tem = internal_catch (package.catchtag, call_trapping_problems_1, opaque,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5147 &thrown, &thrown_tag);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5148 else if (flags & INTERNAL_INHIBIT_THROWS)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5149 /* We skip over the first wrapper, which traps errors. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5150 tem = internal_catch (package.catchtag, call_trapping_problems_2, opaque,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5151 &thrown, &thrown_tag);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5152 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5153 /* Nothing special. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5154 tem = (fun) (arg);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5155
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5156 if (!problem)
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5157 problem = &real_problem;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5158
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5159 if (!thrown)
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5160 {
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5161 problem->caught_error = 0;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5162 problem->caught_throw = 0;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5163 problem->error_conditions = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5164 problem->data = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5165 problem->backtrace = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5166 problem->thrown_tag = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5167 problem->thrown_value = Qnil;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5168 }
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5169 else if (EQ (thrown_tag, package.catchtag))
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5170 {
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5171 problem->caught_error = 1;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5172 problem->caught_throw = 0;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5173 problem->error_conditions = package.error_conditions;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5174 problem->data = package.data;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5175 problem->backtrace = package.backtrace;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5176 problem->thrown_tag = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5177 problem->thrown_value = Qnil;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5178 }
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5179 else
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5180 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5181 problem->caught_error = 0;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5182 problem->caught_throw = 1;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5183 problem->error_conditions = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5184 problem->data = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5185 problem->backtrace = Qnil;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5186 problem->thrown_tag = thrown_tag;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5187 problem->thrown_value = tem;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5188 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5189
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5190 if (!(flags & INHIBIT_WARNING_ISSUE) && !(flags & POSTPONE_WARNING_ISSUE))
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5191 issue_call_trapping_problems_warning (warning_class, warning_string,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5192 problem);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5193
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5194 if (!NILP (package.catchtag) &&
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5195 !EQ (package.catchtag, Vcatch_everything_tag))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5196 free_opaque_ptr (package.catchtag);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5197
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5198 if (!NILP (opaque))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5199 free_opaque_ptr (opaque);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5200
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5201 unbind_to (speccount);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5202 RETURN_UNGCPRO (thrown ? Qunbound : tem);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5203 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5204
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5205 struct va_call_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5206 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5207 lisp_fn_t fun;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5208 int nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5209 Lisp_Object *args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5210 };
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5211
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5212 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5213 va_call_trapping_problems_1 (void *ai_mi_madre)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5214 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5215 struct va_call_trapping_problems *ai_no_corrida =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5216 (struct va_call_trapping_problems *) ai_mi_madre;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5217 Lisp_Object pegar_no_bumbum;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5218
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5219 PRIMITIVE_FUNCALL (pegar_no_bumbum, ai_no_corrida->fun,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5220 ai_no_corrida->args, ai_no_corrida->nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5221 return pegar_no_bumbum;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5222 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5223
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5224 /* #### document me. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5225
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5226 Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5227 va_call_trapping_problems (Lisp_Object warning_class,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5228 const CIbyte *warning_string,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5229 int flags,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5230 struct call_trapping_problems_result *problem,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5231 lisp_fn_t fun, int nargs, ...)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5232 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5233 va_list vargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5234 Lisp_Object args[20];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5235 int i;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5236 struct va_call_trapping_problems fazer_invocacao_atrapalhando_problemas;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5237 struct gcpro gcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5238
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5239 assert (nargs >= 0 && nargs < 20);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5240
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5241 va_start (vargs, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5242 for (i = 0; i < nargs; i++)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5243 args[i] = va_arg (vargs, Lisp_Object);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5244 va_end (vargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5245
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5246 fazer_invocacao_atrapalhando_problemas.fun = fun;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5247 fazer_invocacao_atrapalhando_problemas.nargs = nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5248 fazer_invocacao_atrapalhando_problemas.args = args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5249
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5250 GCPRO1_ARRAY (args, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5251 RETURN_UNGCPRO
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5252 (call_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5253 (warning_class, warning_string, flags, problem,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5254 va_call_trapping_problems_1, &fazer_invocacao_atrapalhando_problemas));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5255 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5256
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5257 /* this is an older interface, barely different from
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5258 va_call_trapping_problems.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5259
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5260 #### eliminate this or at least merge the ERROR_BEHAVIOR stuff into
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5261 va_call_trapping_problems(). */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5262
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5263 Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5264 call_with_suspended_errors (lisp_fn_t fun, Lisp_Object retval,
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
5265 Lisp_Object class_, Error_Behavior errb,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5266 int nargs, ...)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5267 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5268 va_list vargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5269 Lisp_Object args[20];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5270 int i;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5271 struct va_call_trapping_problems fazer_invocacao_atrapalhando_problemas;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5272 int flags;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5273 struct gcpro gcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5274
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
5275 assert (SYMBOLP (class_)); /* sanity-check */
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
5276 assert (!NILP (class_));
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5277 assert (nargs >= 0 && nargs < 20);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5278
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5279 va_start (vargs, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5280 for (i = 0; i < nargs; i++)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5281 args[i] = va_arg (vargs, Lisp_Object);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5282 va_end (vargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5283
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5284 /* If error-checking is not disabled, just call the function. */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5285
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5286 if (ERRB_EQ (errb, ERROR_ME))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5287 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5288 Lisp_Object val;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5289 PRIMITIVE_FUNCALL (val, fun, args, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5290 return val;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5291 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5292
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5293 if (ERRB_EQ (errb, ERROR_ME_NOT)) /* person wants no warnings */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5294 flags = INHIBIT_WARNING_ISSUE | INHIBIT_ENTERING_DEBUGGER;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5295 else if (ERRB_EQ (errb, ERROR_ME_DEBUG_WARN))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5296 flags = ISSUE_WARNINGS_AT_DEBUG_LEVEL | INHIBIT_ENTERING_DEBUGGER;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5297 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5298 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5299 assert (ERRB_EQ (errb, ERROR_ME_WARN));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5300 flags = INHIBIT_ENTERING_DEBUGGER;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5301 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5302
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5303 flags |= CALL_WITH_SUSPENDED_ERRORS;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5304
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5305 fazer_invocacao_atrapalhando_problemas.fun = fun;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5306 fazer_invocacao_atrapalhando_problemas.nargs = nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5307 fazer_invocacao_atrapalhando_problemas.args = args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5308
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5309 GCPRO1_ARRAY (args, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5310 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5311 Lisp_Object its_way_too_goddamn_late =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5312 call_trapping_problems
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
5313 (class_, 0, flags, 0, va_call_trapping_problems_1,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5314 &fazer_invocacao_atrapalhando_problemas);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5315 UNGCPRO;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5316 if (UNBOUNDP (its_way_too_goddamn_late))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5317 return retval;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5318 else
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5319 return its_way_too_goddamn_late;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5320 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5321 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5322
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5323 struct calln_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5324 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5325 int nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5326 Lisp_Object *args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5327 };
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5328
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5329 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5330 calln_trapping_problems_1 (void *puta)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5331 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5332 struct calln_trapping_problems *p = (struct calln_trapping_problems *) puta;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5333
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5334 return Ffuncall (p->nargs, p->args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5335 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5336
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5337 static Lisp_Object
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5338 calln_trapping_problems (Lisp_Object warning_class,
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5339 const CIbyte *warning_string, int flags,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5340 struct call_trapping_problems_result *problem,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5341 int nargs, Lisp_Object *args)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5342 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5343 struct calln_trapping_problems foo;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5344 struct gcpro gcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5345
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5346 if (SYMBOLP (args[0]))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5347 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5348 Lisp_Object tem = XSYMBOL (args[0])->function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5349 if (NILP (tem) || UNBOUNDP (tem))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5350 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5351 if (problem)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5352 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5353 problem->caught_error = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5354 problem->caught_throw = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5355 problem->error_conditions = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5356 problem->data = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5357 problem->backtrace = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5358 problem->thrown_tag = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5359 problem->thrown_value = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5360 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5361 return Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5362 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5363 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5364
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5365 foo.nargs = nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5366 foo.args = args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5367
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5368 GCPRO1_ARRAY (args, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5369 RETURN_UNGCPRO (call_trapping_problems (warning_class, warning_string,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5370 flags, problem,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5371 calln_trapping_problems_1,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5372 &foo));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5373 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5374
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5375 /* #### fix these functions to follow the calling convention of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5376 call_trapping_problems! */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5377
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5378 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5379 call0_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5380 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5381 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5382 return calln_trapping_problems (Qerror, warning_string, flags, 0, 1,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5383 &function);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5384 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5385
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5386 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5387 call1_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5388 Lisp_Object object, int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5389 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5390 Lisp_Object args[2];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5391
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5392 args[0] = function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5393 args[1] = object;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5394
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5395 return calln_trapping_problems (Qerror, warning_string, flags, 0, 2,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5396 args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5397 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5398
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5399 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5400 call2_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5401 Lisp_Object object1, Lisp_Object object2,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5402 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5403 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5404 Lisp_Object args[3];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5405
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5406 args[0] = function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5407 args[1] = object1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5408 args[2] = object2;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5409
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5410 return calln_trapping_problems (Qerror, warning_string, flags, 0, 3,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5411 args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5412 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5413
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5414 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5415 call3_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5416 Lisp_Object object1, Lisp_Object object2,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5417 Lisp_Object object3, int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5418 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5419 Lisp_Object args[4];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5420
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5421 args[0] = function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5422 args[1] = object1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5423 args[2] = object2;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5424 args[3] = object3;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5425
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5426 return calln_trapping_problems (Qerror, warning_string, flags, 0, 4,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5427 args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5428 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5429
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5430 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5431 call4_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5432 Lisp_Object object1, Lisp_Object object2,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5433 Lisp_Object object3, Lisp_Object object4,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5434 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5435 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5436 Lisp_Object args[5];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5437
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5438 args[0] = function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5439 args[1] = object1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5440 args[2] = object2;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5441 args[3] = object3;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5442 args[4] = object4;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5443
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5444 return calln_trapping_problems (Qerror, warning_string, flags, 0, 5,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5445 args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5446 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5447
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5448 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5449 call5_trapping_problems (const CIbyte *warning_string, Lisp_Object function,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5450 Lisp_Object object1, Lisp_Object object2,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5451 Lisp_Object object3, Lisp_Object object4,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5452 Lisp_Object object5, int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5453 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5454 Lisp_Object args[6];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5455
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5456 args[0] = function;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5457 args[1] = object1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5458 args[2] = object2;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5459 args[3] = object3;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5460 args[4] = object4;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5461 args[5] = object5;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5462
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5463 return calln_trapping_problems (Qerror, warning_string, flags, 0, 6,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5464 args);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5465 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5466
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5467 struct eval_in_buffer_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5468 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5469 struct buffer *buf;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5470 Lisp_Object form;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5471 };
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5472
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5473 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5474 eval_in_buffer_trapping_problems_1 (void *arg)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5475 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5476 struct eval_in_buffer_trapping_problems *p =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5477 (struct eval_in_buffer_trapping_problems *) arg;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5478
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5479 return eval_in_buffer (p->buf, p->form);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5480 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5481
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5482 /* #### fix these functions to follow the calling convention of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5483 call_trapping_problems! */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5484
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5485 Lisp_Object
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 853
diff changeset
5486 eval_in_buffer_trapping_problems (const CIbyte *warning_string,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5487 struct buffer *buf, Lisp_Object form,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5488 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5489 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5490 struct eval_in_buffer_trapping_problems p;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5491 Lisp_Object buffer = wrap_buffer (buf);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5492 struct gcpro gcpro1, gcpro2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5493
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5494 GCPRO2 (buffer, form);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5495 p.buf = buf;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5496 p.form = form;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5497 RETURN_UNGCPRO (call_trapping_problems (Qerror, warning_string, flags, 0,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5498 eval_in_buffer_trapping_problems_1,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5499 &p));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5500 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5501
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5502 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5503 run_hook_trapping_problems (Lisp_Object warning_class,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5504 Lisp_Object hook_symbol,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5505 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5506 {
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5507 return run_hook_with_args_trapping_problems (warning_class, 1, &hook_symbol,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5508 RUN_HOOKS_TO_COMPLETION,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5509 flags);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5510 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5511
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5512 static Lisp_Object
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5513 safe_run_hook_trapping_problems_1 (void *puta)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5514 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5515 Lisp_Object hook = VOID_TO_LISP (puta);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5516
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5517 run_hook (hook);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5518 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5519 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5520
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5521 /* Same as run_hook_trapping_problems() but also set the hook to nil
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5522 if an error occurs (but not a quit). */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5523
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5524 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5525 safe_run_hook_trapping_problems (Lisp_Object warning_class,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5526 Lisp_Object hook_symbol, int flags)
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5527 {
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5528 Lisp_Object tem;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5529 struct gcpro gcpro1, gcpro2;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5530 struct call_trapping_problems_result prob;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5531
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5532 if (!initialized || preparing_for_armageddon)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5533 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5534 tem = find_symbol_value (hook_symbol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5535 if (NILP (tem) || UNBOUNDP (tem))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5536 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5537
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5538 GCPRO2 (hook_symbol, tem);
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5539 tem = call_trapping_problems (Qerror, NULL,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5540 flags | POSTPONE_WARNING_ISSUE,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5541 &prob,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5542 safe_run_hook_trapping_problems_1,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5543 LISP_TO_VOID (hook_symbol));
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5544 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5545 Lisp_Object hook_name = XSYMBOL_NAME (hook_symbol);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5546 Ibyte *hook_str = XSTRING_DATA (hook_name);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5547 Ibyte *err = alloca_ibytes (XSTRING_LENGTH (hook_name) + 100);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5548
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5549 if (prob.caught_throw || (prob.caught_error && !EQ (prob.error_conditions,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5550 Qquit)))
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5551 {
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5552 Fset (hook_symbol, Qnil);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5553 qxesprintf (err, "Error in `%s' (resetting to nil)", hook_str);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5554 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5555 else
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5556 qxesprintf (err, "Quit in `%s'", hook_str);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5557
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5558
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5559 issue_call_trapping_problems_warning (warning_class, (CIbyte *) err,
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5560 &prob);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5561 }
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5562
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5563 UNGCPRO;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5564 return tem;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5565 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5566
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5567 struct run_hook_with_args_in_buffer_trapping_problems
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5568 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5569 struct buffer *buf;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5570 int nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5571 Lisp_Object *args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5572 enum run_hooks_condition cond;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5573 };
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5574
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5575 static Lisp_Object
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5576 run_hook_with_args_in_buffer_trapping_problems_1 (void *puta)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5577 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5578 struct run_hook_with_args_in_buffer_trapping_problems *porra =
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5579 (struct run_hook_with_args_in_buffer_trapping_problems *) puta;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5580
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5581 return run_hook_with_args_in_buffer (porra->buf, porra->nargs, porra->args,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5582 porra->cond);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5583 }
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5584
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5585 /* #### fix these functions to follow the calling convention of
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5586 call_trapping_problems! */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5587
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5588 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5589 run_hook_with_args_in_buffer_trapping_problems (Lisp_Object warning_class,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5590 struct buffer *buf, int nargs,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5591 Lisp_Object *args,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5592 enum run_hooks_condition cond,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5593 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5594 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5595 Lisp_Object sym, val, ret;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5596 struct run_hook_with_args_in_buffer_trapping_problems diversity_and_distrust;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5597 struct gcpro gcpro1;
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5598 Lisp_Object hook_name;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5599 Ibyte *hook_str;
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5600 Ibyte *err;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5601
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5602 if (!initialized || preparing_for_armageddon)
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5603 /* We need to bail out of here pronto. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5604 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5605
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5606 GCPRO1_ARRAY (args, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5607
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5608 sym = args[0];
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5609 val = symbol_value_in_buffer (sym, wrap_buffer (buf));
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5610 ret = (cond == RUN_HOOKS_UNTIL_FAILURE ? Qt : Qnil);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5611
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5612 if (UNBOUNDP (val) || NILP (val))
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5613 RETURN_UNGCPRO (ret);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5614
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5615 diversity_and_distrust.buf = buf;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5616 diversity_and_distrust.nargs = nargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5617 diversity_and_distrust.args = args;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5618 diversity_and_distrust.cond = cond;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5619
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5620 hook_name = XSYMBOL_NAME (args[0]);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5621 hook_str = XSTRING_DATA (hook_name);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5622 err = alloca_ibytes (XSTRING_LENGTH (hook_name) + 100);
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5623 qxesprintf (err, "Error in `%s'", hook_str);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5624 RETURN_UNGCPRO
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5625 (call_trapping_problems
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5626 (warning_class, (CIbyte *) err, flags, 0,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5627 run_hook_with_args_in_buffer_trapping_problems_1,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5628 &diversity_and_distrust));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5629 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5630
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5631 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5632 run_hook_with_args_trapping_problems (Lisp_Object warning_class,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5633 int nargs,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5634 Lisp_Object *args,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5635 enum run_hooks_condition cond,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5636 int flags)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5637 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5638 return run_hook_with_args_in_buffer_trapping_problems
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5639 (warning_class, current_buffer, nargs, args, cond, flags);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5640 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5641
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5642 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5643 va_run_hook_with_args_trapping_problems (Lisp_Object warning_class,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5644 Lisp_Object hook_var,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5645 int nargs, ...)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5646 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5647 /* This function can GC */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5648 struct gcpro gcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5649 int i;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5650 va_list vargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5651 Lisp_Object *funcall_args = alloca_array (Lisp_Object, 1 + nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5652 int flags;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5653
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5654 va_start (vargs, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5655 funcall_args[0] = hook_var;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5656 for (i = 0; i < nargs; i++)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5657 funcall_args[i + 1] = va_arg (vargs, Lisp_Object);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5658 flags = va_arg (vargs, int);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5659 va_end (vargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5660
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5661 GCPRO1_ARRAY (funcall_args, nargs + 1);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5662 RETURN_UNGCPRO (run_hook_with_args_in_buffer_trapping_problems
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5663 (warning_class, current_buffer, nargs + 1, funcall_args,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5664 RUN_HOOKS_TO_COMPLETION, flags));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5665 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5666
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5667 Lisp_Object
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5668 va_run_hook_with_args_in_buffer_trapping_problems (Lisp_Object warning_class,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5669 struct buffer *buf,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5670 Lisp_Object hook_var,
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5671 int nargs, ...)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5672 {
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5673 /* This function can GC */
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5674 struct gcpro gcpro1;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5675 int i;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5676 va_list vargs;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5677 Lisp_Object *funcall_args = alloca_array (Lisp_Object, 1 + nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5678 int flags;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5679
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5680 va_start (vargs, nargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5681 funcall_args[0] = hook_var;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5682 for (i = 0; i < nargs; i++)
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5683 funcall_args[i + 1] = va_arg (vargs, Lisp_Object);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5684 flags = va_arg (vargs, int);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5685 va_end (vargs);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5686
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5687 GCPRO1_ARRAY (funcall_args, nargs + 1);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5688 RETURN_UNGCPRO (run_hook_with_args_in_buffer_trapping_problems
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5689 (warning_class, buf, nargs + 1, funcall_args,
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5690 RUN_HOOKS_TO_COMPLETION, flags));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5691 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5692
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5693
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5694 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5695 /* The special binding stack */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5696 /* Most C code should simply use specbind() and unbind_to_1(). */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5697 /* When performance is critical, use the macros in backtrace.h. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5698 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5699
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5700 #define min_max_specpdl_size 400
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5701
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5702 void
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 617
diff changeset
5703 grow_specpdl (EMACS_INT reserved)
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 617
diff changeset
5704 {
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 617
diff changeset
5705 EMACS_INT size_needed = specpdl_depth() + reserved;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5706 if (size_needed >= max_specpdl_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5707 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5708 if (max_specpdl_size < min_max_specpdl_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5709 max_specpdl_size = min_max_specpdl_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5710 if (size_needed >= max_specpdl_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5711 {
1951
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5712 /* Leave room for some specpdl in the debugger. */
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5713 max_specpdl_size = size_needed + 100;
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5714 if (max_specpdl_size > specpdl_size)
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5715 {
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5716 specpdl_size = max_specpdl_size;
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5717 XREALLOC_ARRAY (specpdl, struct specbinding, specpdl_size);
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5718 specpdl_ptr = specpdl + specpdl_depth();
31d5f86eb303 [xemacs-hg @ 2004-03-15 18:01:37 by james]
james
parents: 1849
diff changeset
5719 }
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
5720 signal_continuable_error
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
5721 (Qstack_overflow,
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
5722 "Variable binding depth exceeds max-specpdl-size", Qunbound);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5723 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5724 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5725 while (specpdl_size < size_needed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5726 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5727 specpdl_size *= 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5728 if (specpdl_size > max_specpdl_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5729 specpdl_size = max_specpdl_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5730 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5731 XREALLOC_ARRAY (specpdl, struct specbinding, specpdl_size);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5732 specpdl_ptr = specpdl + specpdl_depth();
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5733 check_specbind_stack_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5734 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5735
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5736
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5737 /* Handle unbinding buffer-local variables */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5738 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5739 specbind_unwind_local (Lisp_Object ovalue)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5740 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5741 Lisp_Object current = Fcurrent_buffer ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5742 Lisp_Object symbol = specpdl_ptr->symbol;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5743 Lisp_Object victim = ovalue;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5744 Lisp_Object buf = get_buffer (XCAR (victim), 0);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5745 ovalue = XCDR (victim);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5746
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5747 free_cons (victim);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5748
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5749 if (NILP (buf))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5750 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5751 /* Deleted buffer -- do nothing */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5752 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5753 else if (symbol_value_buffer_local_info (symbol, XBUFFER (buf)) == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5754 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5755 /* Was buffer-local when binding was made, now no longer is.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5756 * (kill-local-variable can do this.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5757 * Do nothing in this case.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5758 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5759 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5760 else if (EQ (buf, current))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5761 Fset (symbol, ovalue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5762 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5763 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5764 /* Urk! Somebody switched buffers */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5765 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5766 GCPRO1 (current);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5767 Fset_buffer (buf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5768 Fset (symbol, ovalue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5769 Fset_buffer (current);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5770 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5771 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5772 return symbol;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5773 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5774
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5775 static Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5776 specbind_unwind_wasnt_local (Lisp_Object buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5777 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5778 Lisp_Object current = Fcurrent_buffer ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5779 Lisp_Object symbol = specpdl_ptr->symbol;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5780
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5781 buffer = get_buffer (buffer, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5782 if (NILP (buffer))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5783 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5784 /* Deleted buffer -- do nothing */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5785 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5786 else if (symbol_value_buffer_local_info (symbol, XBUFFER (buffer)) == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5787 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5788 /* Was buffer-local when binding was made, now no longer is.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5789 * (kill-local-variable can do this.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5790 * Do nothing in this case.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5791 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5792 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5793 else if (EQ (buffer, current))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5794 Fkill_local_variable (symbol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5795 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5796 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5797 /* Urk! Somebody switched buffers */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5798 struct gcpro gcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5799 GCPRO1 (current);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5800 Fset_buffer (buffer);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5801 Fkill_local_variable (symbol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5802 Fset_buffer (current);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5803 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5804 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5805 return symbol;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5806 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5807
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5808
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5809 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5810 specbind (Lisp_Object symbol, Lisp_Object value)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5811 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5812 SPECBIND (symbol, value);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5813
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5814 check_specbind_stack_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5815 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5816
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5817 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5818 specbind_magic (Lisp_Object symbol, Lisp_Object value)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5819 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5820 int buffer_local =
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5821 symbol_value_buffer_local_info (symbol, current_buffer);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5822
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5823 if (buffer_local == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5824 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5825 specpdl_ptr->old_value = find_symbol_value (symbol);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5826 specpdl_ptr->func = 0; /* Handled specially by unbind_to_1 */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5827 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5828 else if (buffer_local > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5829 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5830 /* Already buffer-local */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5831 specpdl_ptr->old_value = noseeum_cons (Fcurrent_buffer (),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5832 find_symbol_value (symbol));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5833 specpdl_ptr->func = specbind_unwind_local;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5834 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5835 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5836 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5837 /* About to become buffer-local */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5838 specpdl_ptr->old_value = Fcurrent_buffer ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5839 specpdl_ptr->func = specbind_unwind_wasnt_local;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5840 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5841
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5842 specpdl_ptr->symbol = symbol;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5843 specpdl_ptr++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5844 specpdl_depth_counter++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5846 Fset (symbol, value);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5847
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5848 check_specbind_stack_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5849 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5850
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5851 /* Record an unwind-protect -- FUNCTION will be called with ARG no matter
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5852 whether a normal or non-local exit occurs. (You need to call unbind_to_1()
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5853 before your function returns normally, passing in the integer returned
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5854 by this function.) Note: As long as the unwind-protect exists, ARG is
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5855 automatically GCPRO'd. The return value from FUNCTION is completely
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5856 ignored. #### We should eliminate it entirely. */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5857
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5858 int
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5859 record_unwind_protect (Lisp_Object (*function) (Lisp_Object arg),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5860 Lisp_Object arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5861 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5862 SPECPDL_RESERVE (1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5863 specpdl_ptr->func = function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5864 specpdl_ptr->symbol = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5865 specpdl_ptr->old_value = arg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5866 specpdl_ptr++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5867 specpdl_depth_counter++;
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5868 check_specbind_stack_sanity ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5869 return specpdl_depth_counter - 1;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5870 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5871
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5872 static Lisp_Object
802
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5873 restore_lisp_object (Lisp_Object cons)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5874 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5875 Lisp_Object opaque = XCAR (cons);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5876 Lisp_Object *addr = (Lisp_Object *) get_opaque_ptr (opaque);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5877 *addr = XCDR (cons);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5878 free_opaque_ptr (opaque);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5879 free_cons (cons);
802
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5880 return Qnil;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5881 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5882
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5883 /* Establish an unwind-protect which will restore the Lisp_Object pointed to
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5884 by ADDR with the value VAL. */
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
5885 static int
802
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5886 record_unwind_protect_restoring_lisp_object (Lisp_Object *addr,
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5887 Lisp_Object val)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5888 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5889 Lisp_Object opaque = make_opaque_ptr (addr);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5890 return record_unwind_protect (restore_lisp_object,
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5891 noseeum_cons (opaque, val));
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5892 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5893
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5894 /* Similar to specbind() but for any C variable whose value is a
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5895 Lisp_Object. Sets up an unwind-protect to restore the variable
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5896 pointed to by ADDR to its existing value, and then changes its
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5897 value to NEWVAL. Returns the previous value of specpdl_depth();
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5898 pass this to unbind_to() after you are done. */
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5899 int
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5900 internal_bind_lisp_object (Lisp_Object *addr, Lisp_Object newval)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5901 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5902 int count = specpdl_depth ();
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5903 record_unwind_protect_restoring_lisp_object (addr, *addr);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5904 *addr = newval;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5905 return count;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5906 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5907
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5908 static Lisp_Object
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5909 restore_int (Lisp_Object cons)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5910 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5911 Lisp_Object opaque = XCAR (cons);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5912 Lisp_Object lval = XCDR (cons);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5913 int *addr = (int *) get_opaque_ptr (opaque);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5914 int val;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5915
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5916 if (INTP (lval))
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5917 val = XINT (lval);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5918 else
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5919 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5920 val = (int) get_opaque_ptr (lval);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5921 free_opaque_ptr (lval);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5922 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5923
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5924 *addr = val;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5925 free_opaque_ptr (opaque);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
5926 free_cons (cons);
802
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5927 return Qnil;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5928 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5929
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5930 /* Establish an unwind-protect which will restore the int pointed to
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5931 by ADDR with the value VAL. This function works correctly with
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5932 all ints, even those that don't fit into a Lisp integer. */
1333
1b0339b048ce [xemacs-hg @ 2003-03-02 09:38:37 by ben]
ben
parents: 1322
diff changeset
5933 int
802
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5934 record_unwind_protect_restoring_int (int *addr, int val)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5935 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5936 Lisp_Object opaque = make_opaque_ptr (addr);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5937 Lisp_Object lval;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5938
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5939 if (NUMBER_FITS_IN_AN_EMACS_INT (val))
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5940 lval = make_int (val);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5941 else
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5942 lval = make_opaque_ptr ((void *) val);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5943 return record_unwind_protect (restore_int, noseeum_cons (opaque, lval));
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5944 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5945
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5946 /* Similar to specbind() but for any C variable whose value is an int.
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5947 Sets up an unwind-protect to restore the variable pointed to by
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5948 ADDR to its existing value, and then changes its value to NEWVAL.
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5949 Returns the previous value of specpdl_depth(); pass this to
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5950 unbind_to() after you are done. This function works correctly with
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5951 all ints, even those that don't fit into a Lisp integer. */
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5952 int
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5953 internal_bind_int (int *addr, int newval)
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5954 {
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5955 int count = specpdl_depth ();
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5956 record_unwind_protect_restoring_int (addr, *addr);
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5957 *addr = newval;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5958 return count;
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5959 }
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5960
19dfb459d51a [xemacs-hg @ 2002-04-03 10:47:37 by ben]
ben
parents: 801
diff changeset
5961 static Lisp_Object
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5962 free_pointer (Lisp_Object opaque)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5963 {
1726
a8d8f419b459 [xemacs-hg @ 2003-09-30 15:26:34 by james]
james
parents: 1598
diff changeset
5964 xfree (get_opaque_ptr (opaque), void *);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5965 free_opaque_ptr (opaque);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5966 return Qnil;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5967 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5968
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5969 /* Establish an unwind-protect which will free the specified block.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5970 */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5971 int
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5972 record_unwind_protect_freeing (void *ptr)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5973 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5974 Lisp_Object opaque = make_opaque_ptr (ptr);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5975 return record_unwind_protect (free_pointer, opaque);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5976 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5977
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5978 static Lisp_Object
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5979 free_dynarr (Lisp_Object opaque)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5980 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5981 Dynarr_free (get_opaque_ptr (opaque));
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5982 free_opaque_ptr (opaque);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5983 return Qnil;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5984 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5985
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5986 int
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5987 record_unwind_protect_freeing_dynarr (void *ptr)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5988 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5989 Lisp_Object opaque = make_opaque_ptr (ptr);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5990 return record_unwind_protect (free_dynarr, opaque);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5991 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5992
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5993 /* Unwind the stack till specpdl_depth() == COUNT.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5994 VALUE is not used, except that, purely as a convenience to the
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5995 caller, it is protected from garbage-protection and returned. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5996 Lisp_Object
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
5997 unbind_to_1 (int count, Lisp_Object value)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5998 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5999 UNBIND_TO_GCPRO (count, value);
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6000 check_specbind_stack_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6001 return value;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6002 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6003
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6004 /* Don't call this directly.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6005 Only for use by UNBIND_TO* macros in backtrace.h */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6006 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6007 unbind_to_hairy (int count)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6008 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6009 ++specpdl_ptr;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6010 ++specpdl_depth_counter;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6011
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6012 while (specpdl_depth_counter != count)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6013 {
1313
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6014 Lisp_Object oquit = Qunbound;
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6015
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6016 /* Do this check BEFORE decrementing the values below, because once
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6017 they're decremented, GC protection is lost on
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6018 specpdl_ptr->old_value. */
1322
0e48d8b45bdb [xemacs-hg @ 2003-02-23 10:58:01 by ben]
ben
parents: 1318
diff changeset
6019 if (specpdl_ptr[-1].func == Fprogn)
1313
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6020 {
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6021 /* Allow QUIT within unwind-protect routines, but defer any
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6022 existing QUIT until afterwards. Only do this, however, for
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6023 unwind-protects established by Lisp code, not by C code
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6024 (e.g. free_opaque_ptr() or something), because the act of
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6025 checking for QUIT can cause all sorts of weird things to
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6026 happen, since it churns the event loop -- redisplay, running
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6027 Lisp, etc. Code should not have to worry about this just
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6028 because of establishing an unwind-protect. */
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6029 check_quit (); /* make Vquit_flag accurate */
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6030 oquit = Vquit_flag;
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6031 Vquit_flag = Qnil;
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6032 }
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6033
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6034 --specpdl_ptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6035 --specpdl_depth_counter;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6036
1313
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6037 /* #### At this point, there is no GC protection on old_value. This
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6038 could be a real problem, depending on what unwind-protect function
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6039 is called. It looks like it just so happens that the ones
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6040 actually called don't have a problem with this, e.g. Fprogn. But
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6041 we should look into fixing this. (Many unwind-protect functions
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6042 free values. Is it a problem if freed values are
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6043 GC-protected?) */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6044 if (specpdl_ptr->func != 0)
1313
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6045 {
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6046 /* An unwind-protect */
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6047 (*specpdl_ptr->func) (specpdl_ptr->old_value);
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6048 }
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6049
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6050 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6051 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6052 /* We checked symbol for validity when we specbound it,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6053 so only need to call Fset if symbol has magic value. */
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 438
diff changeset
6054 Lisp_Symbol *sym = XSYMBOL (specpdl_ptr->symbol);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6055 if (!SYMBOL_VALUE_MAGIC_P (sym->value))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6056 sym->value = specpdl_ptr->old_value;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6057 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6058 Fset (specpdl_ptr->symbol, specpdl_ptr->old_value);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6059 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6060
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6061 #if 0 /* martin */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6062 #ifndef EXCEEDINGLY_QUESTIONABLE_CODE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6063 /* There should never be anything here for us to remove.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6064 If so, it indicates a logic error in Emacs. Catches
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6065 should get removed when a throw or signal occurs, or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6066 when a catch or condition-case exits normally. But
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6067 it's too dangerous to just remove this code. --ben */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6068
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6069 /* Furthermore, this code is not in FSFmacs!!!
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6070 Braino on mly's part? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6071 /* If we're unwound past the pdlcount of a catch frame,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6072 that catch can't possibly still be valid. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6073 while (catchlist && catchlist->pdlcount > specpdl_depth_counter)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6074 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6075 catchlist = catchlist->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6076 /* Don't mess with gcprolist, backtrace_list here */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6077 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6078 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6079 #endif
1313
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6080
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6081 if (!UNBOUNDP (oquit))
671b65f2b075 [xemacs-hg @ 2003-02-20 01:12:25 by ben]
ben
parents: 1292
diff changeset
6082 Vquit_flag = oquit;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6083 }
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6084 check_specbind_stack_sanity ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6085 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6086
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6087
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6088
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6089 /* Get the value of symbol's global binding, even if that binding is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6090 not now dynamically visible. May return Qunbound or magic values. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6091
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6092 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6093 top_level_value (Lisp_Object symbol)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6094 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6095 REGISTER struct specbinding *ptr = specpdl;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6096
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6097 CHECK_SYMBOL (symbol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6098 for (; ptr != specpdl_ptr; ptr++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6099 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6100 if (EQ (ptr->symbol, symbol))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6101 return ptr->old_value;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6102 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6103 return XSYMBOL (symbol)->value;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6104 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6105
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6106 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6107
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6108 Lisp_Object
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6109 top_level_set (Lisp_Object symbol, Lisp_Object newval)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6110 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6111 REGISTER struct specbinding *ptr = specpdl;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6112
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6113 CHECK_SYMBOL (symbol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6114 for (; ptr != specpdl_ptr; ptr++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6115 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6116 if (EQ (ptr->symbol, symbol))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6117 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6118 ptr->old_value = newval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6119 return newval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6120 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6121 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6122 return Fset (symbol, newval);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6123 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6124
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6125 #endif /* 0 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6126
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6127
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6128 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6129 /* Backtraces */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6130 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6131
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6132 DEFUN ("backtrace-debug", Fbacktrace_debug, 2, 2, 0, /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6133 Set the debug-on-exit flag of eval frame LEVEL levels down to FLAG.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6134 The debugger is entered when that frame exits, if the flag is non-nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6135 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6136 (level, flag))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6137 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6138 REGISTER struct backtrace *backlist = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6139 REGISTER int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6140
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6141 CHECK_INT (level);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6142
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6143 for (i = 0; backlist && i < XINT (level); i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6144 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6145 backlist = backlist->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6146 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6147
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6148 if (backlist)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6149 backlist->debug_on_exit = !NILP (flag);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6150
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6151 return flag;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6152 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6153
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6154 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6155 backtrace_specials (int speccount, int speclimit, Lisp_Object stream)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6156 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6157 int printing_bindings = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6158
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6159 for (; speccount > speclimit; speccount--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6160 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6161 if (specpdl[speccount - 1].func == 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6162 || specpdl[speccount - 1].func == specbind_unwind_local
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6163 || specpdl[speccount - 1].func == specbind_unwind_wasnt_local)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6164 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6165 write_c_string (stream, !printing_bindings ? " # bind (" : " ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6166 Fprin1 (specpdl[speccount - 1].symbol, stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6167 printing_bindings = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6168 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6169 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6170 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6171 if (printing_bindings) write_c_string (stream, ")\n");
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6172 write_c_string (stream, " # (unwind-protect ...)\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6173 printing_bindings = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6174 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6175 }
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6176 if (printing_bindings) write_c_string (stream, ")\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6177 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6178
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6179 static Lisp_Object
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6180 backtrace_unevalled_args (Lisp_Object *args)
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6181 {
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6182 if (args)
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6183 return *args;
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6184 else
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6185 return list1 (build_string ("[internal]"));
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6186 }
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6187
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6188 DEFUN ("backtrace", Fbacktrace, 0, 2, "", /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6189 Print a trace of Lisp function calls currently active.
438
84b14dcb0985 Import from CVS: tag r21-2-27
cvs
parents: 436
diff changeset
6190 Optional arg STREAM specifies the output stream to send the backtrace to,
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6191 and defaults to the value of `standard-output'.
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6192 Optional second arg DETAILED non-nil means show places where currently
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6193 active variable bindings, catches, condition-cases, and
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6194 unwind-protects, as well as function calls, were made.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6195 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6196 (stream, detailed))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6197 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6198 /* This function can GC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6199 struct backtrace *backlist = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6200 struct catchtag *catches = catchlist;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6201 int speccount = specpdl_depth();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6202
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6203 int old_nl = print_escape_newlines;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6204 int old_pr = print_readably;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6205 Lisp_Object old_level = Vprint_level;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6206 Lisp_Object oiq = Vinhibit_quit;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6207 struct gcpro gcpro1, gcpro2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6208
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6209 /* We can't allow quits in here because that could cause the values
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6210 of print_readably and print_escape_newlines to get screwed up.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6211 Normally we would use a record_unwind_protect but that would
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6212 screw up the functioning of this function. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6213 Vinhibit_quit = Qt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6214
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6215 entering_debugger = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6216
872
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
6217 if (!NILP (detailed))
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
6218 Vprint_level = make_int (50);
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
6219 else
79c6ff3eef26 [xemacs-hg @ 2002-06-20 21:18:01 by ben]
ben
parents: 867
diff changeset
6220 Vprint_level = make_int (3);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6221 print_readably = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6222 print_escape_newlines = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6223
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6224 GCPRO2 (stream, old_level);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6225
1261
465bd3c7d932 [xemacs-hg @ 2003-02-06 06:35:47 by ben]
ben
parents: 1204
diff changeset
6226 stream = canonicalize_printcharfun (stream);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6227
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6228 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6229 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6230 if (!NILP (detailed) && catches && catches->backlist == backlist)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6231 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6232 int catchpdl = catches->pdlcount;
438
84b14dcb0985 Import from CVS: tag r21-2-27
cvs
parents: 436
diff changeset
6233 if (speccount > catchpdl
84b14dcb0985 Import from CVS: tag r21-2-27
cvs
parents: 436
diff changeset
6234 && specpdl[catchpdl].func == condition_case_unwind)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6235 /* This is a condition-case catchpoint */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6236 catchpdl = catchpdl + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6237
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6238 backtrace_specials (speccount, catchpdl, stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6239
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6240 speccount = catches->pdlcount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6241 if (catchpdl == speccount)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6242 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6243 write_c_string (stream, " # (catch ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6244 Fprin1 (catches->tag, stream);
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6245 write_c_string (stream, " ...)\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6246 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6247 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6248 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6249 write_c_string (stream, " # (condition-case ... . ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6250 Fprin1 (Fcdr (Fcar (catches->tag)), stream);
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6251 write_c_string (stream, ")\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6252 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6253 catches = catches->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6254 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6255 else if (!backlist)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6256 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6257 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6258 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6259 if (!NILP (detailed) && backlist->pdlcount < speccount)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6260 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6261 backtrace_specials (speccount, backlist->pdlcount, stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6262 speccount = backlist->pdlcount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6263 }
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6264 write_c_string (stream, backlist->debug_on_exit ? "* " : " ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6265 if (backlist->nargs == UNEVALLED)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6266 {
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6267 Fprin1 (Fcons (*backlist->function,
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6268 backtrace_unevalled_args (backlist->args)),
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6269 stream);
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6270 write_c_string (stream, "\n"); /* from FSFmacs 19.30 */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6271 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6272 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6273 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6274 Lisp_Object tem = *backlist->function;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6275 Fprin1 (tem, stream); /* This can QUIT */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6276 write_c_string (stream, "(");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6277 if (backlist->nargs == MANY)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6278 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6279 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6280 Lisp_Object tail = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6281 struct gcpro ngcpro1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6282
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6283 NGCPRO1 (tail);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6284 for (tail = *backlist->args, i = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6285 !NILP (tail);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6286 tail = Fcdr (tail), i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6287 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6288 if (i != 0) write_c_string (stream, " ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6289 Fprin1 (Fcar (tail), stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6290 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6291 NUNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6292 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6293 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6294 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6295 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6296 for (i = 0; i < backlist->nargs; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6297 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6298 if (!i && EQ (tem, Qbyte_code))
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6299 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6300 write_c_string (stream, "\"...\"");
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6301 continue;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6302 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6303 if (i != 0) write_c_string (stream, " ");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6304 Fprin1 (backlist->args[i], stream);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6305 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6306 }
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
6307 write_c_string (stream, ")\n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6308 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6309 backlist = backlist->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6310 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6311 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6312 Vprint_level = old_level;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6313 print_readably = old_pr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6314 print_escape_newlines = old_nl;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6315 UNGCPRO;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6316 Vinhibit_quit = oiq;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6317 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6318 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6319
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6320
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6321 DEFUN ("backtrace-frame", Fbacktrace_frame, 1, 1, 0, /*
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6322 Return the function and arguments NFRAMES up from current execution point.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6323 If that frame has not evaluated the arguments yet (or is a special form),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6324 the value is (nil FUNCTION ARG-FORMS...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6325 If that frame has evaluated its arguments and called its function already,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6326 the value is (t FUNCTION ARG-VALUES...).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6327 A &rest arg is represented as the tail of the list ARG-VALUES.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6328 FUNCTION is whatever was supplied as car of evaluated list,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6329 or a lambda expression for macro calls.
444
576fb035e263 Import from CVS: tag r21-2-37
cvs
parents: 442
diff changeset
6330 If NFRAMES is more than the number of frames, the value is nil.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6331 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6332 (nframes))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6333 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6334 REGISTER struct backtrace *backlist = backtrace_list;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6335 REGISTER int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6336 Lisp_Object tem;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6337
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6338 CHECK_NATNUM (nframes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6339
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6340 /* Find the frame requested. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6341 for (i = XINT (nframes); backlist && (i-- > 0);)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6342 backlist = backlist->next;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6343
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6344 if (!backlist)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6345 return Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6346 if (backlist->nargs == UNEVALLED)
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6347 return Fcons (Qnil, Fcons (*backlist->function,
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6348 backtrace_unevalled_args (backlist->args)));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6349 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6350 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6351 if (backlist->nargs == MANY)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6352 tem = *backlist->args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6353 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6354 tem = Flist (backlist->nargs, backlist->args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6355
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6356 return Fcons (Qt, Fcons (*backlist->function, tem));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6357 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6358 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6359
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6361 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6362 /* Warnings */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6363 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6364
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6365 static int
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6366 warning_will_be_discarded (Lisp_Object level)
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6367 {
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6368 /* Don't even generate debug warnings if they're going to be discarded,
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6369 to avoid excessive consing. */
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6370 return (EQ (level, Qdebug) && !NILP (Vlog_warning_minimum_level) &&
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6371 !EQ (Vlog_warning_minimum_level, Qdebug));
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6372 }
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6373
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6374 void
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
6375 warn_when_safe_lispobj (Lisp_Object class_, Lisp_Object level,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6376 Lisp_Object obj)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6377 {
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6378 if (warning_will_be_discarded (level))
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
6379 return;
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6380
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
6381 obj = list1 (list3 (class_, level, obj));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6382 if (NILP (Vpending_warnings))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6383 Vpending_warnings = Vpending_warnings_tail = obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6384 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6385 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6386 Fsetcdr (Vpending_warnings_tail, obj);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6387 Vpending_warnings_tail = obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6388 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6389 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6390
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6391 /* #### This should probably accept Lisp objects; but then we have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6392 to make sure that Feval() isn't called, since it might not be safe.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6393
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6394 An alternative approach is to just pass some non-string type of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6395 Lisp_Object to warn_when_safe_lispobj(); `prin1-to-string' will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6396 automatically be called when it is safe to do so. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6397
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6398 void
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
6399 warn_when_safe (Lisp_Object class_, Lisp_Object level, const CIbyte *fmt, ...)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6400 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6401 Lisp_Object obj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6402 va_list args;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6403
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6404 if (warning_will_be_discarded (level))
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
6405 return;
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6406
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6407 va_start (args, fmt);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
6408 obj = emacs_vsprintf_string (CGETTEXT (fmt), args);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6409 va_end (args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6410
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
6411 warn_when_safe_lispobj (class_, level, obj);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6412 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6414
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6415
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6416
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6417 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6418 /* Initialization */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6419 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6420
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6421 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6422 syms_of_eval (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6423 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6424 INIT_LRECORD_IMPLEMENTATION (subr);
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6425
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6426 DEFSYMBOL (Qinhibit_quit);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6427 DEFSYMBOL (Qautoload);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6428 DEFSYMBOL (Qdebug_on_error);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6429 DEFSYMBOL (Qstack_trace_on_error);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6430 DEFSYMBOL (Qdebug_on_signal);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6431 DEFSYMBOL (Qstack_trace_on_signal);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6432 DEFSYMBOL (Qdebugger);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6433 DEFSYMBOL (Qmacro);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6434 defsymbol (&Qand_rest, "&rest");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6435 defsymbol (&Qand_optional, "&optional");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6436 /* Note that the process code also uses Qexit */
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6437 DEFSYMBOL (Qexit);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6438 DEFSYMBOL (Qsetq);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6439 DEFSYMBOL (Qinteractive);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6440 DEFSYMBOL (Qcommandp);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6441 DEFSYMBOL (Qdefun);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6442 DEFSYMBOL (Qprogn);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6443 DEFSYMBOL (Qvalues);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6444 DEFSYMBOL (Qdisplay_warning);
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6445 DEFSYMBOL (Qrun_hooks);
887
ccc3177ef10b [xemacs-hg @ 2002-06-28 14:21:41 by michaels]
michaels
parents: 872
diff changeset
6446 DEFSYMBOL (Qfinalize_list);
563
183866b06e0b [xemacs-hg @ 2001-05-24 07:50:48 by ben]
ben
parents: 546
diff changeset
6447 DEFSYMBOL (Qif);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6448
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6449 DEFSUBR (For);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6450 DEFSUBR (Fand);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6451 DEFSUBR (Fif);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6452 DEFSUBR_MACRO (Fwhen);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6453 DEFSUBR_MACRO (Funless);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6454 DEFSUBR (Fcond);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6455 DEFSUBR (Fprogn);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6456 DEFSUBR (Fprog1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6457 DEFSUBR (Fprog2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6458 DEFSUBR (Fsetq);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6459 DEFSUBR (Fquote);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6460 DEFSUBR (Ffunction);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6461 DEFSUBR (Fdefun);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6462 DEFSUBR (Fdefmacro);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6463 DEFSUBR (Fdefvar);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6464 DEFSUBR (Fdefconst);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6465 DEFSUBR (Fuser_variable_p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6466 DEFSUBR (Flet);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6467 DEFSUBR (FletX);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6468 DEFSUBR (Fwhile);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6469 DEFSUBR (Fmacroexpand_internal);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6470 DEFSUBR (Fcatch);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6471 DEFSUBR (Fthrow);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6472 DEFSUBR (Funwind_protect);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6473 DEFSUBR (Fcondition_case);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6474 DEFSUBR (Fcall_with_condition_handler);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6475 DEFSUBR (Fsignal);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6476 DEFSUBR (Finteractive_p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6477 DEFSUBR (Fcommandp);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6478 DEFSUBR (Fcommand_execute);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6479 DEFSUBR (Fautoload);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6480 DEFSUBR (Feval);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6481 DEFSUBR (Fapply);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6482 DEFSUBR (Ffuncall);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6483 DEFSUBR (Ffunctionp);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6484 DEFSUBR (Ffunction_min_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6485 DEFSUBR (Ffunction_max_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6486 DEFSUBR (Frun_hooks);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6487 DEFSUBR (Frun_hook_with_args);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6488 DEFSUBR (Frun_hook_with_args_until_success);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6489 DEFSUBR (Frun_hook_with_args_until_failure);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6490 DEFSUBR (Fbacktrace_debug);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6491 DEFSUBR (Fbacktrace);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6492 DEFSUBR (Fbacktrace_frame);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6493 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6494
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6495 void
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 802
diff changeset
6496 init_eval_semi_early (void)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6497 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6498 specpdl_ptr = specpdl;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6499 specpdl_depth_counter = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6500 catchlist = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6501 Vcondition_handlers = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6502 backtrace_list = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6503 Vquit_flag = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6504 debug_on_next_call = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6505 lisp_eval_depth = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6506 entering_debugger = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6507 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6508
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6509 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6510 reinit_vars_of_eval (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6511 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6512 preparing_for_armageddon = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6513 in_warnings = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6514 specpdl_size = 50;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6515 specpdl = xnew_array (struct specbinding, specpdl_size);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6516 /* XEmacs change: increase these values. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6517 max_specpdl_size = 3000;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6518 max_lisp_eval_depth = 1000;
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6519 #ifdef DEFEND_AGAINST_THROW_RECURSION
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6520 throw_level = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6521 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6522 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6523
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6524 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6525 vars_of_eval (void)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6526 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6527 reinit_vars_of_eval ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6528
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6529 DEFVAR_INT ("max-specpdl-size", &max_specpdl_size /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6530 Limit on number of Lisp variable bindings & unwind-protects before error.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6531 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6532
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6533 DEFVAR_INT ("max-lisp-eval-depth", &max_lisp_eval_depth /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6534 Limit on depth in `eval', `apply' and `funcall' before error.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6535 This limit is to catch infinite recursions for you before they cause
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6536 actual stack overflow in C, which would be fatal for Emacs.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6537 You can safely make it considerably larger than its default value,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6538 if that proves inconveniently small.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6539 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6540
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6541 DEFVAR_LISP ("quit-flag", &Vquit_flag /*
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6542 t causes running Lisp code to abort, unless `inhibit-quit' is non-nil.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6543 `critical' causes running Lisp code to abort regardless of `inhibit-quit'.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6544 Normally, you do not need to set this value yourself. It is set to
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6545 t each time a Control-G is detected, and to `critical' each time a
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6546 Shift-Control-G is detected. The XEmacs core C code is littered with
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6547 calls to the QUIT; macro, which check the values of `quit-flag' and
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6548 `inhibit-quit' and abort (or more accurately, call (signal 'quit)) if
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6549 it's correct to do so.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6550 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6551 Vquit_flag = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6552
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6553 DEFVAR_LISP ("inhibit-quit", &Vinhibit_quit /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6554 Non-nil inhibits C-g quitting from happening immediately.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6555 Note that `quit-flag' will still be set by typing C-g,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6556 so a quit will be signalled as soon as `inhibit-quit' is nil.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6557 To prevent this happening, set `quit-flag' to nil
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6558 before making `inhibit-quit' nil.
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6559
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6560 The value of `inhibit-quit' is ignored if a critical quit is
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6561 requested by typing control-shift-G in a window-system frame;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6562 this is explained in more detail in `quit-flag'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6563 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6564 Vinhibit_quit = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6565
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6566 DEFVAR_LISP ("stack-trace-on-error", &Vstack_trace_on_error /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6567 *Non-nil means automatically display a backtrace buffer
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6568 after any error that is not handled by a `condition-case'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6569 If the value is a list, an error only means to display a backtrace
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6570 if one of its condition symbols appears in the list.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6571 See also variable `stack-trace-on-signal'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6572 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6573 Vstack_trace_on_error = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6574
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6575 DEFVAR_LISP ("stack-trace-on-signal", &Vstack_trace_on_signal /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6576 *Non-nil means automatically display a backtrace buffer
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6577 after any error that is signalled, whether or not it is handled by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6578 a `condition-case'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6579 If the value is a list, an error only means to display a backtrace
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6580 if one of its condition symbols appears in the list.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6581 See also variable `stack-trace-on-error'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6582 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6583 Vstack_trace_on_signal = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6584
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6585 DEFVAR_LISP ("debug-ignored-errors", &Vdebug_ignored_errors /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6586 *List of errors for which the debugger should not be called.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6587 Each element may be a condition-name or a regexp that matches error messages.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6588 If any element applies to a given error, that error skips the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6589 and just returns to top level.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6590 This overrides the variable `debug-on-error'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6591 It does not apply to errors handled by `condition-case'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6592 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6593 Vdebug_ignored_errors = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6594
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6595 DEFVAR_LISP ("debug-on-error", &Vdebug_on_error /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6596 *Non-nil means enter debugger if an unhandled error is signalled.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6597 The debugger will not be entered if the error is handled by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6598 a `condition-case'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6599 If the value is a list, an error only means to enter the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6600 if one of its condition symbols appears in the list.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6601 This variable is overridden by `debug-ignored-errors'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6602 See also variables `debug-on-quit' and `debug-on-signal'.
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6603
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6604 If this variable is set while XEmacs is running noninteractively (using
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6605 `-batch'), and XEmacs was configured with `--debug' (#define XEMACS_DEBUG
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6606 in the C code), instead of trying to invoke the Lisp debugger (which
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6607 obviously won't work), XEmacs will break out to a C debugger using
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6608 \(force-debugging-signal t). This is useful because debugging
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6609 noninteractive runs of XEmacs is often very difficult, since they typically
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6610 happen as part of sometimes large and complex make suites (e.g. rebuilding
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6611 the XEmacs packages). NOTE: This runs abort()!!! (As well as and after
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6612 executing INT 3 under MS Windows, which should invoke a debugger if it's
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6613 active.) This is guaranteed to kill XEmacs! (But in this situation, XEmacs
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6614 is about to die anyway, and if no debugger is present, this will usefully
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6615 dump core.) The most useful way to set this flag when debugging
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6616 noninteractive runs, especially in makefiles, is using the environment
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6617 variable XEMACSDEBUG, like this:
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
6618
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
6619 \(using csh) setenv XEMACSDEBUG '(setq debug-on-error t)'
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 733
diff changeset
6620 \(using bash) export XEMACSDEBUG='(setq debug-on-error t)'
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6621 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6622 Vdebug_on_error = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6623
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6624 DEFVAR_LISP ("debug-on-signal", &Vdebug_on_signal /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6625 *Non-nil means enter debugger if an error is signalled.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6626 The debugger will be entered whether or not the error is handled by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6627 a `condition-case'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6628 If the value is a list, an error only means to enter the debugger
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6629 if one of its condition symbols appears in the list.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6630 See also variable `debug-on-quit'.
1123
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6631
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6632 This will attempt to enter a C debugger when XEmacs is run noninteractively
37bdd24225ef [xemacs-hg @ 2002-11-27 07:15:02 by ben]
ben
parents: 1111
diff changeset
6633 and under the same conditions as described in `debug-on-error'.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6634 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6635 Vdebug_on_signal = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6636
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6637 DEFVAR_BOOL ("debug-on-quit", &debug_on_quit /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6638 *Non-nil means enter debugger if quit is signalled (C-G, for example).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6639 Does not apply if quit is handled by a `condition-case'. Entering the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6640 debugger can also be achieved at any time (for X11 console) by typing
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6641 control-shift-G to signal a critical quit.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6642 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6643 debug_on_quit = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6644
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6645 DEFVAR_BOOL ("debug-on-next-call", &debug_on_next_call /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6646 Non-nil means enter debugger before next `eval', `apply' or `funcall'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6647 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6648
1292
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6649 DEFVAR_BOOL ("backtrace-with-interal-sections",
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6650 &backtrace_with_internal_sections /*
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6651 Non-nil means backtraces will contain additional information indicating
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6652 when particular sections of the C code have been entered, e.g. redisplay(),
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6653 byte-char conversion, internal-external conversion, etc. This can be
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6654 particularly useful when XEmacs crashes, in helping to pinpoint the problem.
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6655 */ );
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6656 #ifdef ERROR_CHECK_STRUCTURES
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6657 backtrace_with_internal_sections = 1;
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6658 #else
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6659 backtrace_with_internal_sections = 0;
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6660 #endif
f3437b56874d [xemacs-hg @ 2003-02-13 09:57:04 by ben]
ben
parents: 1261
diff changeset
6661
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6662 DEFVAR_LISP ("debugger", &Vdebugger /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6663 Function to call to invoke debugger.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6664 If due to frame exit, args are `exit' and the value being returned;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6665 this function's value will be returned instead of that.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6666 If due to error, args are `error' and a list of the args to `signal'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6667 If due to `apply' or `funcall' entry, one arg, `lambda'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6668 If due to `eval' entry, one arg, t.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6669 */ );
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6670 Vdebugger = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6671
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6672 staticpro (&Vcatch_everything_tag);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6673 Vcatch_everything_tag = make_opaque (OPAQUE_CLEAR, 0);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6674
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6675 staticpro (&Vpending_warnings);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6676 Vpending_warnings = Qnil;
1204
e22b0213b713 [xemacs-hg @ 2003-01-12 11:07:58 by michaels]
michaels
parents: 1130
diff changeset
6677 dump_add_root_lisp_object (&Vpending_warnings_tail);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6678 Vpending_warnings_tail = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6679
793
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
6680 DEFVAR_LISP ("log-warning-minimum-level", &Vlog_warning_minimum_level);
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
6681 Vlog_warning_minimum_level = Qinfo;
e38acbeb1cae [xemacs-hg @ 2002-03-29 04:46:17 by ben]
ben
parents: 771
diff changeset
6682
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6683 staticpro (&Vautoload_queue);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6684 Vautoload_queue = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6685
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6686 staticpro (&Vcondition_handlers);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6687
853
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6688 staticpro (&Vdeletable_permanent_display_objects);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6689 Vdeletable_permanent_display_objects = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6690
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6691 staticpro (&Vmodifiable_buffers);
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6692 Vmodifiable_buffers = Qnil;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6693
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6694 inhibit_flags = 0;
2b6fa2618f76 [xemacs-hg @ 2002-05-28 08:44:22 by ben]
ben
parents: 851
diff changeset
6695 }