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0
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1 /* Lisp parsing and input streams.
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2 Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems.
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4 Copyright (C) 1996 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: Mule 2.0, FSF 19.30. */
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24
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25 /* This file has been Mule-ized. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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30 #ifndef standalone
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31 #include "buffer.h"
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32 #include "bytecode.h"
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33 #include "commands.h"
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34 #include "insdel.h"
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35 #include "lstream.h"
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36 #include "opaque.h"
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159
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37 #include <paths.h>
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0
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38 #endif
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70
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39 #ifdef MULE
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40 #include "mule-coding.h"
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41 #endif
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0
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42
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43 #include "sysfile.h"
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44
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45 #ifdef LISP_FLOAT_TYPE
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46 #define THIS_FILENAME lread
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47 #include "sysfloat.h"
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48 #endif /* LISP_FLOAT_TYPE */
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49
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50 Lisp_Object Qread_char, Qstandard_input;
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51 Lisp_Object Qvariable_documentation;
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52 #define LISP_BACKQUOTES
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53 #ifdef LISP_BACKQUOTES
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54 /* FSFmacs says:
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55
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56 Nonzero means inside a new-style backquote
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57 with no surrounding parentheses.
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58 Fread initializes this to zero, so we need not specbind it
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59 or worry about what happens to it when there is an error.
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60
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61 But this is fucking typical Stallman bogosity. Nested
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62 backquotes are perfectly legal and fail utterly with
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63 this silliness. */
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64 static int new_backquote_flag, old_backquote_flag;
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65 Lisp_Object Qbackquote, Qbacktick, Qcomma, Qcomma_at, Qcomma_dot;
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173
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66 #endif
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0
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67 Lisp_Object Qvariable_domain; /* I18N3 */
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68 Lisp_Object Vvalues, Vstandard_input, Vafter_load_alist;
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69 Lisp_Object Qcurrent_load_list;
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70 Lisp_Object Qload, Qload_file_name;
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71 Lisp_Object Qlocate_file_hash_table;
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72 Lisp_Object Qfset;
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73
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74 int puke_on_fsf_keys;
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75
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140
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76 /* This symbol is also used in fns.c */
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77 #define FEATUREP_SYNTAX
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78
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79 #ifdef FEATUREP_SYNTAX
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209
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80 Lisp_Object Qfeaturep;
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140
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81 #endif
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82
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0
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83 /* non-zero if inside `load' */
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84 int load_in_progress;
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85
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86 /* Whether Fload_internal() should check whether the .el is newer
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87 when loading .elc */
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88 int load_warn_when_source_newer;
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89 /* Whether Fload_internal() should check whether the .elc doesn't exist */
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90 int load_warn_when_source_only;
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91 /* Whether Fload_internal() should ignore .elc files when no suffix is given */
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92 int load_ignore_elc_files;
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93
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94 /* Directory in which the sources were found. */
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95 Lisp_Object Vsource_directory;
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96
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97 /* Search path for files to be loaded. */
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98 Lisp_Object Vload_path;
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99
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100 /* Search path for files when dumping. */
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101 /* Lisp_Object Vdump_load_path; */
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102
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103 /* This is the user-visible association list that maps features to
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104 lists of defs in their load files. */
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105 Lisp_Object Vload_history;
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106
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107 /* This is used to build the load history. */
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108 Lisp_Object Vcurrent_load_list;
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109
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110 /* Name of file actually being read by `load'. */
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111 Lisp_Object Vload_file_name;
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112
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113 /* Same as Vload_file_name but not Lisp-accessible. This ensures that
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114 our #$ checks are reliable. */
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115 Lisp_Object Vload_file_name_internal;
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116
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117 Lisp_Object Vload_file_name_internal_the_purecopy;
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118
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119 /* Function to use for reading, in `load' and friends. */
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120 Lisp_Object Vload_read_function;
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121
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245
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122 /* The association list of objects read with the #n=object form.
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123 Each member of the list has the form (n . object), and is used to
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124 look up the object for the corresponding #n# construct.
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125 It must be set to nil before all top-level calls to read0. */
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126 Lisp_Object read_objects;
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127
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0
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128 /* Nonzero means load should forcibly load all dynamic doc strings. */
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129 /* Note that this always happens (with some special behavior) when
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130 purify_flag is set. */
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131 static int load_force_doc_strings;
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132
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133 /* List of descriptors now open for Fload_internal. */
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134 static Lisp_Object Vload_descriptor_list;
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135
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136 /* In order to implement "load_force_doc_strings", we keep
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137 a list of all the compiled-function objects and such
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138 that we have created in the process of loading this file.
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139 See the rant below.
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140
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141 We specbind this just like Vload_file_name, so there's no
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142 problems with recursive loading. */
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143 static Lisp_Object Vload_force_doc_string_list;
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144
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145 /* A resizing-buffer stream used to temporarily hold data while reading */
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146 static Lisp_Object Vread_buffer_stream;
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147
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148 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
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149 Lisp_Object Vcurrent_compiled_function_annotation;
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150 #endif
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151
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16
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152 static int load_byte_code_version;
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153
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0
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154 /* An array describing all known built-in structure types */
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185
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155 static structure_type_dynarr *the_structure_type_dynarr;
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0
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156
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157 #if 0 /* FSFmacs defun hack */
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158 /* When nonzero, read conses in pure space */
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159 static int read_pure;
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160 #endif
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161
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162 #if 0 /* FSFmacs bogosity */
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163 /* For use within read-from-string (this reader is non-reentrant!!) */
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164 static int read_from_string_index;
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165 static int read_from_string_limit;
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166 #endif
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167
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168 #if 0 /* More FSF implementation kludges. */
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169 /* In order to implement load-force-doc-string, FSF saves the
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170 #@-quoted string when it's seen, and goes back and retrieves
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171 it later.
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172
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173 This approach is not only kludgy, but it in general won't work
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174 correctly because there's no stack of remembered #@-quoted-strings
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175 and those strings don't generally appear in the file in the same
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176 order as their #$ references. (Yes, that is amazingly stupid too.
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177 WHY IN THE FUCKING HELL CAN'T RMS EVER IMPLEMENT ANYTHING IN A SANE
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178 WAY? It would be trivially easy to always encode the #@ string
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179 [which is a comment, anyway] in the middle of the (#$ . INT) cons
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180 reference. That way, it would be really easy to implement
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181 load-force-doc-string in a non-kludgy way by just retrieving the
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182 string immediately, because it's delivered on a silver platter.)
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183
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184 And finally, this stupid approach doesn't work under Mule, or
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185 under MS-DOS or Windows NT, or under VMS, or any other place
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186 where you either can't do an ftell() or don't get back a byte
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187 count.
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188
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189 Oh, and one more lossage in this approach: If you attempt to
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190 dump any ELC files that were compiled with `byte-compile-dynamic'
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191 (as opposed to just `byte-compile-dynamic-docstring'), you
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192 get hosed. FMH! (as the illustrious JWZ was prone to utter)
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193
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194 The approach we use is clean, solves all of these problems, and is
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195 probably easier to implement anyway. We just save a list of all
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196 the containing objects that have (#$ . INT) conses in them (this
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197 will only be compiled-function objects and lists), and when the
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198 file is finished loading, we go through and fill in all the
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199 doc strings at once. */
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200
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201 /* This contains the last string skipped with #@. */
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202 static char *saved_doc_string;
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203 /* Length of buffer allocated in saved_doc_string. */
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204 static int saved_doc_string_size;
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205 /* Length of actual data in saved_doc_string. */
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206 static int saved_doc_string_length;
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207 /* This is the file position that string came from. */
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208 static int saved_doc_string_position;
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209 #endif
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210
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211
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212
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213 static DOESNT_RETURN
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214 syntax_error (CONST char *string)
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215 {
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216 signal_error (Qinvalid_read_syntax,
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217 list1 (build_translated_string (string)));
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218 }
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219
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220 static Lisp_Object
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221 continuable_syntax_error (CONST char *string)
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222 {
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223 return Fsignal (Qinvalid_read_syntax,
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224 list1 (build_translated_string (string)));
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225 }
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226
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227
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228 /* Handle unreading and rereading of characters. */
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229 static Emchar
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230 readchar (Lisp_Object readcharfun)
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231 {
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232 /* This function can GC */
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233
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234 if (BUFFERP (readcharfun))
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235 {
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236 Emchar c;
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237 struct buffer *b = XBUFFER (readcharfun);
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173
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238
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0
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239 if (!BUFFER_LIVE_P (b))
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240 error ("Reading from killed buffer");
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241
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242 if (BUF_PT (b) >= BUF_ZV (b))
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243 return -1;
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244 c = BUF_FETCH_CHAR (b, BUF_PT (b));
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245 BUF_SET_PT (b, BUF_PT (b) + 1);
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246
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247 return c;
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248 }
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249 else if (LSTREAMP (readcharfun))
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250 {
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16
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251 Emchar c = Lstream_get_emchar (XLSTREAM (readcharfun));
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252 #ifdef DEBUG_XEMACS /* testing Mule */
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253 static int testing_mule = 0; /* Change via debugger */
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254 if (testing_mule) {
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255 if (c >= 0x20 && c <= 0x7E) fprintf (stderr, "%c", c);
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256 else if (c == '\n') fprintf (stderr, "\\n\n");
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257 else fprintf (stderr, "\\%o ", c);
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258 }
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259 #endif
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260 return c;
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0
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261 }
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262 else if (MARKERP (readcharfun))
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263 {
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264 Emchar c;
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265 Bufpos mpos = marker_position (readcharfun);
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266 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
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267
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268 if (mpos >= BUF_ZV (inbuffer))
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269 return -1;
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270 c = BUF_FETCH_CHAR (inbuffer, mpos);
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271 set_marker_position (readcharfun, mpos + 1);
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272 return c;
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273 }
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274 else
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275 {
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276 Lisp_Object tem = call0 (readcharfun);
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277
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278 if (!CHAR_OR_CHAR_INTP (tem))
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279 return -1;
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280 return XCHAR_OR_CHAR_INT (tem);
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281 }
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282 }
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283
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284 /* Unread the character C in the way appropriate for the stream READCHARFUN.
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285 If the stream is a user function, call it with the char as argument. */
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286
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287 static void
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288 unreadchar (Lisp_Object readcharfun, Emchar c)
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289 {
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290 if (c == -1)
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291 /* Don't back up the pointer if we're unreading the end-of-input mark,
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292 since readchar didn't advance it when we read it. */
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293 ;
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294 else if (BUFFERP (readcharfun))
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295 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
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296 else if (LSTREAMP (readcharfun))
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297 {
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298 Lstream_unget_emchar (XLSTREAM (readcharfun), c);
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16
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299 #ifdef DEBUG_XEMACS /* testing Mule */
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300 {
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301 static int testing_mule = 0; /* Set this using debugger */
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302 if (testing_mule)
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303 fprintf (stderr,
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304 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
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305 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
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306 }
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307 #endif
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0
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308 }
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309 else if (MARKERP (readcharfun))
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310 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
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311 else
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312 call1 (readcharfun, make_char (c));
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313 }
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314
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315 static Lisp_Object read0 (Lisp_Object readcharfun);
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316 static Lisp_Object read1 (Lisp_Object readcharfun);
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317 /* allow_dotted_lists means that something like (foo bar . baz)
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318 is acceptable. If -1, means check for starting with defun
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319 and make structure pure. (not implemented, probably for very
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320 good reasons)
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321 */
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322 /*
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323 If check_for_doc_references, look for (#$ . INT) doc references
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324 in the list and record if load_force_doc_strings is non-zero.
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325 (Such doc references will be destroyed during the loadup phase
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326 by replacing with Qzero, because Snarf-documentation will fill
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327 them in again.)
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328
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329 WARNING: If you set this, you sure as hell better not call
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330 free_list() on the returned list here. */
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331
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332 static Lisp_Object read_list (Lisp_Object readcharfun,
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333 Emchar terminator,
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334 int allow_dotted_lists,
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335 int check_for_doc_references);
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336
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337 /* get a character from the tty */
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338
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339 #ifdef standalone /* This primitive is normally not defined */
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340
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341 #define kludge DEFUN /* to keep this away from make-docfile... */
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342 kludge ("read-char", Fread_char, Sread_char, 0, 0, 0, "") ()
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343 {
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344 return getchar ();
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345 }
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346 #undef kludge
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347 #endif /* standalone */
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348
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349
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350
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173
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351 static void readevalloop (Lisp_Object readcharfun,
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0
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352 Lisp_Object sourcefile,
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353 Lisp_Object (*evalfun) (Lisp_Object),
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354 int printflag);
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355
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356 static Lisp_Object
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357 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
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358 {
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359 Lstream_close (XLSTREAM (stream));
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360 if (--load_in_progress < 0)
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361 load_in_progress = 0;
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362 return Qnil;
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363 }
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364
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365 static Lisp_Object
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366 load_descriptor_unwind (Lisp_Object oldlist)
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367 {
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368 Vload_descriptor_list = oldlist;
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369 return Qnil;
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370 }
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371
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372 static Lisp_Object
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373 load_file_name_internal_unwind (Lisp_Object oldval)
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374 {
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375 Vload_file_name_internal = oldval;
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376 return Qnil;
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377 }
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378
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379 static Lisp_Object
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380 load_file_name_internal_the_purecopy_unwind (Lisp_Object oldval)
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381 {
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382 Vload_file_name_internal_the_purecopy = oldval;
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383 return Qnil;
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384 }
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385
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386 static Lisp_Object
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70
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387 load_byte_code_version_unwind (Lisp_Object oldval)
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388 {
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389 load_byte_code_version = XINT (oldval);
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390 return Qnil;
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391 }
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392
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393 /* The plague is coming.
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394
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395 Ring around the rosy, pocket full of posy,
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396 Ashes ashes, they all fall down.
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397 */
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398 void
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399 ebolify_bytecode_constants (Lisp_Object vector)
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400 {
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173
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401 int len = XVECTOR_LENGTH (vector);
|
|
70
|
402 int i;
|
|
|
403
|
|
|
404 for (i = 0; i < len; i++)
|
|
|
405 {
|
|
173
|
406 Lisp_Object el = XVECTOR_DATA (vector)[i];
|
|
70
|
407
|
|
|
408 /* We don't check for `eq', `equal', and the others that have
|
|
|
409 bytecode opcodes. This might lose if someone passes #'eq or
|
|
|
410 something to `funcall', but who would really do that? As
|
|
|
411 they say in law, we've made a "good-faith effort" to
|
|
|
412 unfuckify ourselves. And doing it this way avoids screwing
|
|
|
413 up args to `make-hashtable' and such. As it is, we have to
|
|
|
414 add an extra Ebola check in decode_weak_list_type(). --ben */
|
|
|
415 if (EQ (el, Qassoc))
|
|
|
416 el = Qold_assoc;
|
|
|
417 if (EQ (el, Qdelq))
|
|
|
418 el = Qold_delq;
|
|
|
419 #if 0
|
|
|
420 /* I think this is a bad idea because it will probably mess
|
|
|
421 with keymap code. */
|
|
|
422 if (EQ (el, Qdelete))
|
|
|
423 el = Qold_delete;
|
|
|
424 #endif
|
|
|
425 if (EQ (el, Qrassq))
|
|
|
426 el = Qold_rassq;
|
|
|
427 if (EQ (el, Qrassoc))
|
|
|
428 el = Qold_rassoc;
|
|
173
|
429 XVECTOR_DATA (vector)[i] = el;
|
|
70
|
430 }
|
|
|
431 }
|
|
|
432
|
|
|
433 static Lisp_Object
|
|
0
|
434 pas_de_lache_ici (int fd, Lisp_Object victim)
|
|
|
435 {
|
|
|
436 Lisp_Object tem;
|
|
|
437 EMACS_INT pos;
|
|
|
438
|
|
|
439 if (!INTP (XCDR (victim)))
|
|
|
440 signal_simple_error ("Bogus doc string reference", victim);
|
|
|
441 pos = XINT (XCDR (victim));
|
|
|
442 if (pos < 0)
|
|
|
443 pos = -pos; /* kludge to mark a user variable */
|
|
|
444 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal);
|
|
|
445 if (!STRINGP (tem))
|
|
|
446 signal_error (Qerror, tem);
|
|
|
447 return tem;
|
|
|
448 }
|
|
|
449
|
|
|
450 static Lisp_Object
|
|
|
451 load_force_doc_string_unwind (Lisp_Object oldlist)
|
|
|
452 {
|
|
|
453 struct gcpro gcpro1;
|
|
|
454 Lisp_Object list = Vload_force_doc_string_list;
|
|
|
455 Lisp_Object tail;
|
|
|
456 int fd = XINT (XCAR (Vload_descriptor_list));
|
|
|
457 /* NOTE: If purify_flag is true, we're in-place modifying objects that
|
|
|
458 may be in purespace (and if not, they will be). Therefore, we have
|
|
|
459 to be VERY careful to make sure that all objects that we create
|
|
|
460 are purecopied -- objects in purespace are not marked for GC, and
|
|
|
461 if we leave any impure objects inside of pure ones, we're really
|
|
|
462 screwed. */
|
|
|
463
|
|
|
464 GCPRO1 (list);
|
|
|
465 /* restore the old value first just in case an error occurs. */
|
|
|
466 Vload_force_doc_string_list = oldlist;
|
|
|
467
|
|
|
468 LIST_LOOP (tail, list)
|
|
|
469 {
|
|
|
470 Lisp_Object john = Fcar (tail);
|
|
|
471 if (CONSP (john))
|
|
|
472 {
|
|
|
473 assert (CONSP (XCAR (john)));
|
|
|
474 assert (!purify_flag); /* should have been handled in read_list() */
|
|
|
475 XCAR (john) = pas_de_lache_ici (fd, XCAR (john));
|
|
|
476 }
|
|
|
477 else
|
|
|
478 {
|
|
|
479 Lisp_Object doc;
|
|
|
480
|
|
|
481 assert (COMPILED_FUNCTIONP (john));
|
|
|
482 if (CONSP (XCOMPILED_FUNCTION (john)->bytecodes))
|
|
|
483 {
|
|
|
484 struct gcpro ngcpro1;
|
|
|
485 Lisp_Object juan = (pas_de_lache_ici
|
|
|
486 (fd, XCOMPILED_FUNCTION (john)->bytecodes));
|
|
|
487 Lisp_Object ivan;
|
|
|
488
|
|
|
489 NGCPRO1 (juan);
|
|
|
490 ivan = Fread (juan);
|
|
|
491 if (!CONSP (ivan))
|
|
|
492 signal_simple_error ("invalid lazy-loaded byte code", ivan);
|
|
|
493 /* Remember to purecopy; see above. */
|
|
|
494 XCOMPILED_FUNCTION (john)->bytecodes = Fpurecopy (XCAR (ivan));
|
|
70
|
495 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
496 if (XCOMPILED_FUNCTION (john)->flags.ebolified
|
|
|
497 && VECTORP (XCDR (ivan)))
|
|
|
498 ebolify_bytecode_constants (XCDR (ivan));
|
|
0
|
499 XCOMPILED_FUNCTION (john)->constants = Fpurecopy (XCDR (ivan));
|
|
|
500 NUNGCPRO;
|
|
|
501 }
|
|
|
502 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
503 if (CONSP (doc))
|
|
|
504 {
|
|
|
505 assert (!purify_flag); /* should have been handled in
|
|
|
506 read_compiled_function() */
|
|
|
507 doc = pas_de_lache_ici (fd, doc);
|
|
|
508 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
509 doc);
|
|
|
510 }
|
|
|
511 }
|
|
|
512 }
|
|
|
513
|
|
|
514 if (!NILP (list))
|
|
|
515 free_list (list);
|
|
|
516
|
|
|
517 UNGCPRO;
|
|
|
518 return Qnil;
|
|
|
519 }
|
|
|
520
|
|
|
521 /* Close all descriptors in use for Fload_internal.
|
|
|
522 This is used when starting a subprocess. */
|
|
|
523
|
|
|
524 void
|
|
|
525 close_load_descs (void)
|
|
|
526 {
|
|
|
527 Lisp_Object tail;
|
|
|
528 LIST_LOOP (tail, Vload_descriptor_list)
|
|
|
529 close (XINT (XCAR (tail)));
|
|
|
530 }
|
|
|
531
|
|
|
532 #ifdef I18N3
|
|
|
533 Lisp_Object Vfile_domain;
|
|
|
534
|
|
|
535 Lisp_Object
|
|
|
536 restore_file_domain (Lisp_Object val)
|
|
|
537 {
|
|
|
538 Vfile_domain = val;
|
|
|
539 return Qnil;
|
|
|
540 }
|
|
|
541 #endif /* I18N3 */
|
|
|
542
|
|
70
|
543 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /*
|
|
|
544 Execute a file of Lisp code named FILE; no coding-system frobbing.
|
|
|
545 This function is identical to `load' except for the handling of the
|
|
|
546 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule
|
|
|
547 support is not present, both functions are identical and ignore the
|
|
|
548 CODESYS and USED-CODESYS arguments.)
|
|
|
549
|
|
|
550 If support for Mule exists in this Emacs, the file is decoded
|
|
|
551 according to CODESYS; if omitted, no conversion happens. If
|
|
|
552 USED-CODESYS is non-nil, it should be a symbol, and the actual coding
|
|
|
553 system that was used for the decoding is stored into it. It will in
|
|
|
554 general be different from CODESYS if CODESYS specifies automatic
|
|
|
555 encoding detection or end-of-line detection.
|
|
20
|
556 */
|
|
70
|
557 (file, no_error, nomessage, nosuffix, codesys, used_codesys))
|
|
0
|
558 {
|
|
|
559 /* This function can GC */
|
|
|
560 int fd = -1;
|
|
|
561 int speccount = specpdl_depth ();
|
|
|
562 int source_only = 0;
|
|
|
563 Lisp_Object newer = Qnil;
|
|
|
564 Lisp_Object handler = Qnil;
|
|
|
565 Lisp_Object found = Qnil;
|
|
|
566 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
16
|
567 int reading_elc = 0;
|
|
|
568 int message_p = NILP (nomessage);
|
|
0
|
569 #ifdef DEBUG_XEMACS
|
|
16
|
570 static Lisp_Object last_file_loaded;
|
|
0
|
571 int pure_usage = 0;
|
|
|
572 #endif
|
|
|
573 #ifdef DOS_NT
|
|
|
574 int dosmode = O_TEXT;
|
|
|
575 #endif /* DOS_NT */
|
|
118
|
576 struct stat s1, s2;
|
|
0
|
577 GCPRO3 (file, newer, found);
|
|
|
578
|
|
|
579 CHECK_STRING (file);
|
|
|
580
|
|
|
581 #ifdef DEBUG_XEMACS
|
|
|
582 if (purify_flag && noninteractive)
|
|
16
|
583 {
|
|
|
584 message_p = 1;
|
|
|
585 last_file_loaded = file;
|
|
|
586 pure_usage = purespace_usage ();
|
|
|
587 }
|
|
|
588 #endif /* DEBUG_XEMACS */
|
|
0
|
589
|
|
|
590 /* If file name is magic, call the handler. */
|
|
|
591 handler = Ffind_file_name_handler (file, Qload);
|
|
|
592 if (!NILP (handler))
|
|
74
|
593 RETURN_UNGCPRO (call5 (handler, Qload, file, no_error,
|
|
82
|
594 nomessage, nosuffix));
|
|
0
|
595
|
|
|
596 /* Do this after the handler to avoid
|
|
|
597 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
598 (Below here, we care only whether they are nil or not.) */
|
|
|
599 file = Fsubstitute_in_file_name (file);
|
|
|
600
|
|
70
|
601 #ifdef MULE
|
|
|
602 if (!NILP (used_codesys))
|
|
|
603 CHECK_SYMBOL (used_codesys);
|
|
|
604 #endif
|
|
16
|
605
|
|
0
|
606 /* Avoid weird lossage with null string as arg,
|
|
|
607 since it would try to load a directory as a Lisp file.
|
|
|
608 Unix truly sucks. */
|
|
16
|
609 if (XSTRING_LENGTH (file) > 0)
|
|
0
|
610 {
|
|
|
611 char *foundstr;
|
|
|
612 int foundlen;
|
|
|
613
|
|
173
|
614 fd = locate_file (Vload_path, file,
|
|
0
|
615 ((!NILP (nosuffix)) ? "" :
|
|
|
616 load_ignore_elc_files ? ".el:" :
|
|
|
617 ".elc:.el:"),
|
|
|
618 &found,
|
|
|
619 -1);
|
|
|
620
|
|
|
621 if (fd < 0)
|
|
|
622 {
|
|
|
623 if (NILP (no_error))
|
|
|
624 signal_file_error ("Cannot open load file", file);
|
|
|
625 else
|
|
|
626 {
|
|
|
627 UNGCPRO;
|
|
|
628 return Qnil;
|
|
|
629 }
|
|
|
630 }
|
|
|
631
|
|
16
|
632 foundstr = (char *) alloca (XSTRING_LENGTH (found) + 1);
|
|
|
633 strcpy (foundstr, (char *) XSTRING_DATA (found));
|
|
0
|
634 foundlen = strlen (foundstr);
|
|
|
635
|
|
|
636 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
637 differ. --ben */
|
|
|
638 if (load_ignore_elc_files)
|
|
|
639 {
|
|
|
640 newer = Ffile_name_nondirectory (found);
|
|
|
641 }
|
|
|
642 else if (load_warn_when_source_newer &&
|
|
|
643 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
644 {
|
|
|
645 if (! fstat (fd, &s1)) /* can't fail, right? */
|
|
|
646 {
|
|
|
647 int result;
|
|
|
648 /* temporarily hack the 'c' off the end of the filename */
|
|
|
649 foundstr[foundlen - 1] = '\0';
|
|
|
650 result = stat (foundstr, &s2);
|
|
|
651 if (result >= 0 &&
|
|
|
652 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
|
653 {
|
|
|
654 Lisp_Object newer_name = make_string ((Bufbyte *) foundstr,
|
|
|
655 foundlen - 1);
|
|
|
656 struct gcpro nngcpro1;
|
|
|
657 NNGCPRO1 (newer_name);
|
|
|
658 newer = Ffile_name_nondirectory (newer_name);
|
|
|
659 NNUNGCPRO;
|
|
|
660 }
|
|
|
661 /* put the 'c' back on (kludge-o-rama) */
|
|
|
662 foundstr[foundlen - 1] = 'c';
|
|
|
663 }
|
|
|
664 }
|
|
|
665 else if (load_warn_when_source_only &&
|
|
|
666 /* `found' ends in ".el" */
|
|
|
667 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
668 /* `file' does not end in ".el" */
|
|
|
669 memcmp (".el",
|
|
16
|
670 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
0
|
671 3))
|
|
|
672 {
|
|
|
673 source_only = 1;
|
|
|
674 }
|
|
16
|
675
|
|
|
676 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
677 reading_elc = 1;
|
|
0
|
678
|
|
|
679 #ifdef DOS_NT
|
|
|
680 /* The file was opened as binary, because that's what we'll
|
|
|
681 encounter most of the time. If we're loading a .el, we need
|
|
|
682 to reopen it in text mode. */
|
|
118
|
683 if (!reading_elc)
|
|
239
|
684 {
|
|
|
685 /* #### I would simply call _setmode (fd, O_RDONLY | O_TEXT).
|
|
|
686 This is ok on NT but maybe breaks DOS. Is there
|
|
|
687 any "DOS" still alive? - kkm */
|
|
|
688 close (fd);
|
|
|
689 fd = open (foundstr, O_RDONLY | O_TEXT);
|
|
|
690 if (fd < 0)
|
|
|
691 {
|
|
|
692 if (NILP (no_error))
|
|
|
693 signal_file_error ("Cannot open load file", file);
|
|
|
694 else
|
|
|
695 {
|
|
|
696 UNGCPRO;
|
|
|
697 return Qnil;
|
|
|
698 }
|
|
|
699 }
|
|
|
700 }
|
|
16
|
701 #endif /* DOS_NT */
|
|
118
|
702 }
|
|
16
|
703
|
|
82
|
704 #define PRINT_LOADING_MESSAGE(done) do { \
|
|
|
705 if (load_ignore_elc_files) \
|
|
|
706 { \
|
|
|
707 if (message_p) \
|
|
|
708 message ("Loading %s..." done, XSTRING_DATA (newer)); \
|
|
|
709 } \
|
|
|
710 else if (!NILP (newer)) \
|
|
|
711 message ("Loading %s..." done " (file %s is newer)", \
|
|
|
712 XSTRING_DATA (file), \
|
|
|
713 XSTRING_DATA (newer)); \
|
|
|
714 else if (source_only) \
|
|
16
|
715 message ("Loading %s..." done " (file %s.elc does not exist)", \
|
|
82
|
716 XSTRING_DATA (file), \
|
|
|
717 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
718 else if (message_p) \
|
|
|
719 message ("Loading %s..." done, XSTRING_DATA (file)); \
|
|
16
|
720 } while (0)
|
|
|
721
|
|
|
722 PRINT_LOADING_MESSAGE ("");
|
|
0
|
723
|
|
|
724 {
|
|
|
725 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
726 Lisp_Object lispstream = Qnil;
|
|
|
727 CONST int block_size = 8192;
|
|
|
728 struct gcpro ngcpro1;
|
|
|
729
|
|
|
730 NGCPRO1 (lispstream);
|
|
|
731 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
732 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
733 files aren't really all that big. */
|
|
|
734 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
735 block_size);
|
|
70
|
736 #ifdef MULE
|
|
|
737 lispstream = make_decoding_input_stream
|
|
|
738 (XLSTREAM (lispstream), Fget_coding_system (codesys));
|
|
|
739 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
740 block_size);
|
|
|
741 #endif /* MULE */
|
|
0
|
742
|
|
|
743 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
|
744 record_unwind_protect (load_unwind, lispstream);
|
|
|
745 record_unwind_protect (load_descriptor_unwind, Vload_descriptor_list);
|
|
|
746 record_unwind_protect (load_file_name_internal_unwind,
|
|
|
747 Vload_file_name_internal);
|
|
|
748 record_unwind_protect (load_file_name_internal_the_purecopy_unwind,
|
|
|
749 Vload_file_name_internal_the_purecopy);
|
|
|
750 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
751 Vload_force_doc_string_list);
|
|
|
752 Vload_file_name_internal = found;
|
|
|
753 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
754 specbind (Qload_file_name, found);
|
|
16
|
755 Vload_descriptor_list = Fcons (make_int (fd), Vload_descriptor_list);
|
|
0
|
756 Vload_force_doc_string_list = Qnil;
|
|
|
757 #ifdef I18N3
|
|
|
758 record_unwind_protect (restore_file_domain, Vfile_domain);
|
|
|
759 Vfile_domain = Qnil; /* set it to nil; a call to #'domain will set it. */
|
|
|
760 #endif
|
|
|
761 load_in_progress++;
|
|
70
|
762
|
|
|
763 /* Now determine what sort of ELC file we're reading in. */
|
|
|
764 record_unwind_protect (load_byte_code_version_unwind,
|
|
|
765 make_int (load_byte_code_version));
|
|
|
766 if (reading_elc)
|
|
|
767 {
|
|
|
768 char elc_header[8];
|
|
|
769 int num_read;
|
|
|
770
|
|
|
771 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8);
|
|
|
772 if (num_read < 8
|
|
|
773 || strncmp (elc_header, ";ELC", 4))
|
|
|
774 {
|
|
|
775 /* Huh? Probably not a valid ELC file. */
|
|
|
776 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
777 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read);
|
|
|
778 }
|
|
|
779 else
|
|
|
780 load_byte_code_version = elc_header[4];
|
|
|
781 }
|
|
|
782 else
|
|
|
783 load_byte_code_version = 100; /* no Ebolification needed */
|
|
173
|
784
|
|
0
|
785 readevalloop (lispstream, file, Feval, 0);
|
|
70
|
786 #ifdef MULE
|
|
|
787 if (!NILP (used_codesys))
|
|
|
788 Fset (used_codesys,
|
|
|
789 XCODING_SYSTEM_NAME
|
|
|
790 (decoding_stream_coding_system (XLSTREAM (lispstream))));
|
|
|
791 #endif /* MULE */
|
|
0
|
792 unbind_to (speccount, Qnil);
|
|
|
793
|
|
|
794 NUNGCPRO;
|
|
|
795 }
|
|
|
796
|
|
|
797 {
|
|
|
798 Lisp_Object tem;
|
|
|
799 /* #### Disgusting kludge */
|
|
|
800 /* Run any load-hooks for this file. */
|
|
229
|
801 /* #### An even more disgusting kludge. There is horrible code */
|
|
|
802 /* this is relying on the fact that dumped lisp files are found */
|
|
|
803 /* via `load-path' search. */
|
|
|
804 Lisp_Object name = file;
|
|
|
805
|
|
|
806 if (!NILP(Ffile_name_absolute_p(file)))
|
|
|
807 {
|
|
|
808 name = Ffile_name_nondirectory(file);
|
|
|
809 }
|
|
|
810
|
|
|
811 tem = Fassoc (name, Vafter_load_alist);
|
|
0
|
812 if (!NILP (tem))
|
|
|
813 {
|
|
|
814 struct gcpro ngcpro1;
|
|
|
815
|
|
|
816 NGCPRO1 (tem);
|
|
|
817 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
818 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
819 Feval (tem);
|
|
|
820 NUNGCPRO;
|
|
|
821 }
|
|
|
822 }
|
|
|
823
|
|
|
824 #ifdef DEBUG_XEMACS
|
|
16
|
825 if (purify_flag && noninteractive)
|
|
0
|
826 {
|
|
16
|
827 if (EQ (last_file_loaded, file))
|
|
|
828 message_append (" (%d)", purespace_usage() - pure_usage);
|
|
|
829 else
|
|
80
|
830 message ("Loading %s ...done (%d)", XSTRING_DATA (file),
|
|
16
|
831 purespace_usage() - pure_usage);
|
|
0
|
832 }
|
|
70
|
833 #endif /* DEBUG_XEMACS */
|
|
0
|
834
|
|
16
|
835 if (!noninteractive)
|
|
|
836 PRINT_LOADING_MESSAGE ("done");
|
|
173
|
837
|
|
0
|
838 UNGCPRO;
|
|
|
839 return Qt;
|
|
|
840 }
|
|
|
841
|
|
|
842
|
|
|
843 #if 0 /* FSFmacs */
|
|
|
844 /* not used */
|
|
|
845 static int
|
|
|
846 complete_filename_p (Lisp_Object pathname)
|
|
|
847 {
|
|
16
|
848 REGISTER unsigned char *s = XSTRING_DATA (pathname);
|
|
0
|
849 return (IS_DIRECTORY_SEP (s[0])
|
|
16
|
850 || (XSTRING_LENGTH (pathname) > 2
|
|
0
|
851 && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))
|
|
|
852 #ifdef ALTOS
|
|
|
853 || *s == '@'
|
|
|
854 #endif
|
|
|
855 );
|
|
|
856 }
|
|
|
857 #endif /* 0 */
|
|
|
858
|
|
20
|
859 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /*
|
|
0
|
860 Search for FILENAME through PATH-LIST, expanded by one of the optional
|
|
185
|
861 SUFFIXES (string of suffixes separated by ":"s), checking for access
|
|
0
|
862 MODE (0|1|2|4 = exists|executable|writeable|readable), default readable.
|
|
|
863
|
|
|
864 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
865 in order to speed things up. It tries valiantly to not get confused in
|
|
|
866 the face of a changing and unpredictable environment, but can occasionally
|
|
|
867 get tripped up. In this case, you will have to call
|
|
|
868 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
869 for details.
|
|
20
|
870 */
|
|
|
871 (filename, path_list, suffixes, mode))
|
|
0
|
872 {
|
|
|
873 /* This function can GC */
|
|
|
874 Lisp_Object tp;
|
|
|
875
|
|
|
876 CHECK_STRING (filename);
|
|
|
877 if (!NILP (suffixes))
|
|
|
878 {
|
|
|
879 CHECK_STRING (suffixes);
|
|
|
880 }
|
|
|
881 if (!(NILP (mode) || (INTP (mode) && XINT (mode) >= 0)))
|
|
|
882 mode = wrong_type_argument (Qnatnump, mode);
|
|
173
|
883 locate_file (path_list, filename,
|
|
0
|
884 ((NILP (suffixes)) ? "" :
|
|
16
|
885 (char *) (XSTRING_DATA (suffixes))),
|
|
0
|
886 &tp, (NILP (mode) ? R_OK : XINT (mode)));
|
|
|
887 return tp;
|
|
|
888 }
|
|
|
889
|
|
|
890 /* recalculate the hash table for the given string */
|
|
|
891
|
|
|
892 static Lisp_Object
|
|
|
893 locate_file_refresh_hashing (Lisp_Object str)
|
|
|
894 {
|
|
|
895 Lisp_Object hash =
|
|
16
|
896 make_directory_hash_table ((char *) XSTRING_DATA (str));
|
|
0
|
897 Fput (str, Qlocate_file_hash_table, hash);
|
|
|
898 return hash;
|
|
|
899 }
|
|
|
900
|
|
|
901 /* find the hash table for the given string, recalculating if necessary */
|
|
|
902
|
|
|
903 static Lisp_Object
|
|
|
904 locate_file_find_directory_hash_table (Lisp_Object str)
|
|
|
905 {
|
|
|
906 Lisp_Object hash = Fget (str, Qlocate_file_hash_table, Qnil);
|
|
|
907 if (NILP (Fhashtablep (hash)))
|
|
|
908 return locate_file_refresh_hashing (str);
|
|
|
909 return hash;
|
|
|
910 }
|
|
|
911
|
|
|
912 /* look for STR in PATH, optionally adding suffixes in SUFFIX */
|
|
|
913
|
|
|
914 static int
|
|
|
915 locate_file_in_directory (Lisp_Object path, Lisp_Object str,
|
|
|
916 CONST char *suffix, Lisp_Object *storeptr,
|
|
|
917 int mode)
|
|
|
918 {
|
|
|
919 /* This function can GC */
|
|
|
920 int fd;
|
|
|
921 int fn_size = 100;
|
|
|
922 char buf[100];
|
|
|
923 char *fn = buf;
|
|
|
924 int want_size;
|
|
|
925 struct stat st;
|
|
|
926 Lisp_Object filename = Qnil;
|
|
|
927 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
928 CONST char *nsuffix;
|
|
|
929
|
|
|
930 GCPRO3 (path, str, filename);
|
|
|
931
|
|
|
932 filename = Fexpand_file_name (str, path);
|
|
|
933 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
934 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
935 /* Of course, this could conceivably lose if luser sets
|
|
|
936 default-directory to be something non-absolute ... */
|
|
|
937 {
|
|
|
938 if (NILP (filename))
|
|
|
939 /* NIL means current dirctory */
|
|
|
940 filename = current_buffer->directory;
|
|
|
941 else
|
|
|
942 filename = Fexpand_file_name (filename,
|
|
|
943 current_buffer->directory);
|
|
|
944 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
945 {
|
|
|
946 /* Give up on this path element! */
|
|
|
947 UNGCPRO;
|
|
|
948 return -1;
|
|
|
949 }
|
|
|
950 }
|
|
|
951 /* Calculate maximum size of any filename made from
|
|
|
952 this path element/specified file name and any possible suffix. */
|
|
16
|
953 want_size = strlen (suffix) + XSTRING_LENGTH (filename) + 1;
|
|
0
|
954 if (fn_size < want_size)
|
|
|
955 fn = (char *) alloca (fn_size = 100 + want_size);
|
|
173
|
956
|
|
0
|
957 nsuffix = suffix;
|
|
173
|
958
|
|
0
|
959 /* Loop over suffixes. */
|
|
|
960 while (1)
|
|
|
961 {
|
|
|
962 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
|
963 int lsuffix = ((esuffix) ? (esuffix - nsuffix) : strlen (nsuffix));
|
|
173
|
964
|
|
0
|
965 /* Concatenate path element/specified name with the suffix. */
|
|
173
|
966 strncpy (fn, (char *) XSTRING_DATA (filename),
|
|
16
|
967 XSTRING_LENGTH (filename));
|
|
|
968 fn[XSTRING_LENGTH (filename)] = 0;
|
|
0
|
969 if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
|
|
|
970 strncat (fn, nsuffix, lsuffix);
|
|
173
|
971
|
|
0
|
972 /* Ignore file if it's a directory. */
|
|
|
973 if (stat (fn, &st) >= 0
|
|
|
974 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
975 {
|
|
|
976 /* Check that we can access or open it. */
|
|
|
977 if (mode >= 0)
|
|
|
978 fd = access (fn, mode);
|
|
|
979 else
|
|
|
980 #ifdef DOS_NT
|
|
|
981 fd = open (fn, O_RDONLY | O_BINARY, 0);
|
|
|
982 #else
|
|
|
983 fd = open (fn, O_RDONLY, 0);
|
|
|
984 #endif
|
|
173
|
985
|
|
0
|
986 if (fd >= 0)
|
|
|
987 {
|
|
|
988 /* We succeeded; return this descriptor and filename. */
|
|
|
989 if (storeptr)
|
|
|
990 *storeptr = build_string (fn);
|
|
|
991 UNGCPRO;
|
|
173
|
992
|
|
118
|
993 /* XXX FIX ME
|
|
|
994 Not sure about this on NT yet. Do nothing for now.
|
|
|
995 --marcpa */
|
|
173
|
996 #ifndef DOS_NT
|
|
0
|
997 /* If we actually opened the file, set close-on-exec flag
|
|
|
998 on the new descriptor so that subprocesses can't whack
|
|
|
999 at it. */
|
|
|
1000 if (mode < 0)
|
|
|
1001 (void) fcntl (fd, F_SETFD, FD_CLOEXEC);
|
|
118
|
1002 #endif
|
|
173
|
1003
|
|
0
|
1004 return fd;
|
|
|
1005 }
|
|
|
1006 }
|
|
173
|
1007
|
|
0
|
1008 /* Advance to next suffix. */
|
|
|
1009 if (esuffix == 0)
|
|
|
1010 break;
|
|
|
1011 nsuffix += lsuffix + 1;
|
|
|
1012 }
|
|
173
|
1013
|
|
0
|
1014 UNGCPRO;
|
|
|
1015 return -1;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
1019
|
|
|
1020 static int
|
|
|
1021 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
1022 CONST char *suffix, Lisp_Object *storeptr,
|
|
|
1023 int mode)
|
|
|
1024 {
|
|
|
1025 /* This function can GC */
|
|
|
1026 int absolute;
|
|
|
1027 struct gcpro gcpro1;
|
|
|
1028
|
|
|
1029 /* is this necessary? */
|
|
|
1030 GCPRO1 (path);
|
|
|
1031
|
|
|
1032 absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
1033
|
|
|
1034 for (; !NILP (path); path = Fcdr (path))
|
|
|
1035 {
|
|
|
1036 int val = locate_file_in_directory (Fcar (path), str, suffix,
|
|
|
1037 storeptr, mode);
|
|
|
1038 if (val >= 0)
|
|
|
1039 {
|
|
|
1040 UNGCPRO;
|
|
|
1041 return val;
|
|
|
1042 }
|
|
|
1043 if (absolute)
|
|
|
1044 break;
|
|
|
1045 }
|
|
173
|
1046
|
|
0
|
1047 UNGCPRO;
|
|
|
1048 return -1;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 /* Construct a list of all files to search for. */
|
|
|
1052
|
|
|
1053 static Lisp_Object
|
|
|
1054 locate_file_construct_suffixed_files (Lisp_Object str, CONST char *suffix)
|
|
|
1055 {
|
|
|
1056 int want_size;
|
|
|
1057 int fn_size = 100;
|
|
|
1058 char buf[100];
|
|
|
1059 char *fn = buf;
|
|
|
1060 CONST char *nsuffix;
|
|
|
1061 Lisp_Object suffixtab = Qnil;
|
|
173
|
1062
|
|
0
|
1063 /* Calculate maximum size of any filename made from
|
|
|
1064 this path element/specified file name and any possible suffix. */
|
|
16
|
1065 want_size = strlen (suffix) + XSTRING_LENGTH (str) + 1;
|
|
0
|
1066 if (fn_size < want_size)
|
|
|
1067 fn = (char *) alloca (fn_size = 100 + want_size);
|
|
173
|
1068
|
|
0
|
1069 nsuffix = suffix;
|
|
173
|
1070
|
|
0
|
1071 while (1)
|
|
|
1072 {
|
|
|
1073 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
|
1074 int lsuffix = ((esuffix) ? (esuffix - nsuffix) : strlen (nsuffix));
|
|
173
|
1075
|
|
0
|
1076 /* Concatenate path element/specified name with the suffix. */
|
|
16
|
1077 strncpy (fn, (char *) XSTRING_DATA (str), XSTRING_LENGTH (str));
|
|
|
1078 fn[XSTRING_LENGTH (str)] = 0;
|
|
0
|
1079 if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
|
|
|
1080 strncat (fn, nsuffix, lsuffix);
|
|
173
|
1081
|
|
0
|
1082 suffixtab = Fcons (build_string (fn), suffixtab);
|
|
|
1083 /* Advance to next suffix. */
|
|
|
1084 if (esuffix == 0)
|
|
|
1085 break;
|
|
|
1086 nsuffix += lsuffix + 1;
|
|
|
1087 }
|
|
|
1088 return Fnreverse (suffixtab);
|
|
|
1089 }
|
|
|
1090
|
|
|
1091 /* Search for a file whose name is STR, looking in directories
|
|
|
1092 in the Lisp list PATH, and trying suffixes from SUFFIX.
|
|
|
1093 SUFFIX is a string containing possible suffixes separated by colons.
|
|
|
1094 On success, returns a file descriptor. On failure, returns -1.
|
|
|
1095
|
|
|
1096 MODE nonnegative means don't open the files,
|
|
|
1097 just look for one for which access(file,MODE) succeeds. In this case,
|
|
|
1098 returns 1 on success.
|
|
|
1099
|
|
|
1100 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
1101 the file actually found should be stored as a Lisp string.
|
|
|
1102 Nil is stored there on failure.
|
|
|
1103
|
|
|
1104 Called openp() in FSFmacs. */
|
|
|
1105
|
|
|
1106 int
|
|
|
1107 locate_file (Lisp_Object path, Lisp_Object str, CONST char *suffix,
|
|
|
1108 Lisp_Object *storeptr, int mode)
|
|
|
1109 {
|
|
|
1110 /* This function can GC */
|
|
|
1111 Lisp_Object suffixtab = Qnil;
|
|
|
1112 Lisp_Object pathtail;
|
|
|
1113 int val;
|
|
|
1114 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1115
|
|
|
1116 if (storeptr)
|
|
|
1117 *storeptr = Qnil;
|
|
|
1118
|
|
|
1119 /* if this filename has directory components, it's too complicated
|
|
|
1120 to try and use the hash tables. */
|
|
|
1121 if (!NILP (Ffile_name_directory (str)))
|
|
|
1122 return locate_file_without_hash (path, str, suffix, storeptr,
|
|
|
1123 mode);
|
|
|
1124
|
|
|
1125 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
1126 unless some caller has fucked up. */
|
|
|
1127 GCPRO3 (path, str, suffixtab);
|
|
|
1128
|
|
|
1129 suffixtab = locate_file_construct_suffixed_files (str, suffix);
|
|
|
1130
|
|
|
1131 for (pathtail = path; !NILP (pathtail); pathtail = Fcdr (pathtail))
|
|
|
1132 {
|
|
|
1133 Lisp_Object pathel = Fcar (pathtail);
|
|
|
1134 Lisp_Object hashtab;
|
|
|
1135 Lisp_Object tail;
|
|
|
1136 int found;
|
|
|
1137
|
|
|
1138 /* If this path element is relative, we have to look by hand.
|
|
|
1139 Can't set string property in a pure string. */
|
|
|
1140 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel)) ||
|
|
|
1141 purified (pathel))
|
|
|
1142 {
|
|
|
1143 val = locate_file_in_directory (pathel, str, suffix, storeptr,
|
|
|
1144 mode);
|
|
|
1145 if (val >= 0)
|
|
|
1146 {
|
|
|
1147 UNGCPRO;
|
|
|
1148 return val;
|
|
|
1149 }
|
|
|
1150 continue;
|
|
|
1151 }
|
|
|
1152
|
|
|
1153 hashtab = locate_file_find_directory_hash_table (pathel);
|
|
|
1154
|
|
|
1155 /* Loop over suffixes. */
|
|
195
|
1156 for (tail = suffixtab, found = 0; !found && CONSP (tail);
|
|
|
1157 tail = XCDR (tail))
|
|
0
|
1158 {
|
|
195
|
1159 if (!NILP (Fgethash (XCAR (tail), hashtab, Qnil)))
|
|
0
|
1160 found = 1;
|
|
|
1161 }
|
|
|
1162
|
|
|
1163 if (found)
|
|
|
1164 {
|
|
|
1165 /* This is a likely candidate. Look by hand in this directory
|
|
|
1166 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1167 val = locate_file_in_directory (pathel, str, suffix, storeptr,
|
|
|
1168 mode);
|
|
|
1169 if (val >= 0)
|
|
|
1170 {
|
|
|
1171 UNGCPRO;
|
|
|
1172 return val;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1176 a directory ...) So refresh our hashing. */
|
|
|
1177 locate_file_refresh_hashing (pathel);
|
|
|
1178 }
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 /* File is probably not there, but check the hard way just in case. */
|
|
|
1182 val = locate_file_without_hash (path, str, suffix, storeptr,
|
|
|
1183 mode);
|
|
|
1184 if (val >= 0)
|
|
|
1185 {
|
|
|
1186 /* Sneaky user added a file without telling us. */
|
|
|
1187 Flocate_file_clear_hashing (path);
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 UNGCPRO;
|
|
|
1191 return val;
|
|
|
1192 }
|
|
|
1193
|
|
20
|
1194 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /*
|
|
0
|
1195 Clear the hash records for the specified list of directories.
|
|
|
1196 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1197 track the following environmental changes:
|
|
|
1198
|
|
|
1199 -- changes of any sort to the list of directories to be searched.
|
|
|
1200 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1201 directories in the list.
|
|
|
1202 -- byte-compilation of a .el file into a .elc file.
|
|
|
1203
|
|
|
1204 `locate-file' will primarily get confused if you add a file that shadows
|
|
181
|
1205 \(i.e. has the same name as) another file further down in the directory list.
|
|
0
|
1206 In this case, you must call `locate-file-clear-hashing'.
|
|
20
|
1207 */
|
|
181
|
1208 (path))
|
|
0
|
1209 {
|
|
|
1210 Lisp_Object pathtail;
|
|
|
1211
|
|
|
1212 for (pathtail = path; !NILP (pathtail); pathtail = Fcdr (pathtail))
|
|
|
1213 {
|
|
|
1214 Lisp_Object pathel = Fcar (pathtail);
|
|
|
1215 if (!purified (pathel))
|
|
|
1216 Fput (pathel, Qlocate_file_hash_table, Qnil);
|
|
|
1217 }
|
|
|
1218 return Qnil;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 #ifdef LOADHIST
|
|
|
1222
|
|
|
1223 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1224 into the load_history variable. The details depend on whether
|
|
|
1225 the source has an associated file name or not. */
|
|
|
1226
|
|
|
1227 static void
|
|
|
1228 build_load_history (int loading, Lisp_Object source)
|
|
|
1229 {
|
|
|
1230 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1231 REGISTER Lisp_Object tem, tem2;
|
|
|
1232 int foundit;
|
|
|
1233
|
|
233
|
1234 #if !defined(LOADHIST_DUMPED)
|
|
0
|
1235 /* Don't bother recording anything for preloaded files. */
|
|
|
1236 if (purify_flag)
|
|
|
1237 return;
|
|
233
|
1238 #endif
|
|
0
|
1239
|
|
|
1240 tail = Vload_history;
|
|
|
1241 prev = Qnil;
|
|
|
1242 foundit = 0;
|
|
|
1243 while (!NILP (tail))
|
|
|
1244 {
|
|
|
1245 tem = Fcar (tail);
|
|
|
1246
|
|
|
1247 /* Find the feature's previous assoc list... */
|
|
195
|
1248 if (internal_equal (source, Fcar (tem), 0))
|
|
0
|
1249 {
|
|
|
1250 foundit = 1;
|
|
|
1251
|
|
|
1252 /* If we're loading, remove it. */
|
|
|
1253 if (loading)
|
|
173
|
1254 {
|
|
0
|
1255 if (NILP (prev))
|
|
|
1256 Vload_history = Fcdr (tail);
|
|
|
1257 else
|
|
|
1258 Fsetcdr (prev, Fcdr (tail));
|
|
|
1259 }
|
|
|
1260
|
|
|
1261 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1262 else
|
|
|
1263 {
|
|
|
1264 tem2 = Vcurrent_load_list;
|
|
|
1265
|
|
|
1266 while (CONSP (tem2))
|
|
|
1267 {
|
|
195
|
1268 newelt = XCAR (tem2);
|
|
0
|
1269
|
|
|
1270 if (NILP (Fmemq (newelt, tem)))
|
|
|
1271 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1272 Fcons (newelt, Fcdr (tem))));
|
|
|
1273
|
|
195
|
1274 tem2 = XCDR (tem2);
|
|
0
|
1275 QUIT;
|
|
|
1276 }
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279 else
|
|
|
1280 prev = tail;
|
|
|
1281 tail = Fcdr (tail);
|
|
|
1282 QUIT;
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1286 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1287 an existing member for the current source. */
|
|
|
1288 if (loading || !foundit)
|
|
|
1289 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1290 Vload_history);
|
|
|
1291 }
|
|
|
1292
|
|
|
1293 #else /* !LOADHIST */
|
|
|
1294 #define build_load_history(x,y)
|
|
|
1295 #endif /* !LOADHIST */
|
|
|
1296
|
|
|
1297
|
|
|
1298 #if 0 /* FSFmacs defun hack */
|
|
|
1299 Lisp_Object
|
|
|
1300 unreadpure (void) /* Used as unwind-protect function in readevalloop */
|
|
|
1301 {
|
|
|
1302 read_pure = 0;
|
|
|
1303 return Qnil;
|
|
|
1304 }
|
|
|
1305 #endif /* 0 */
|
|
|
1306
|
|
|
1307 static void
|
|
173
|
1308 readevalloop (Lisp_Object readcharfun,
|
|
0
|
1309 Lisp_Object sourcename,
|
|
|
1310 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1311 int printflag)
|
|
|
1312 {
|
|
|
1313 /* This function can GC */
|
|
|
1314 REGISTER Emchar c;
|
|
|
1315 REGISTER Lisp_Object val;
|
|
|
1316 int speccount = specpdl_depth ();
|
|
|
1317 struct gcpro gcpro1;
|
|
|
1318 struct buffer *b = 0;
|
|
|
1319
|
|
|
1320 if (BUFFERP (readcharfun))
|
|
|
1321 b = XBUFFER (readcharfun);
|
|
|
1322 else if (MARKERP (readcharfun))
|
|
|
1323 b = XMARKER (readcharfun)->buffer;
|
|
|
1324
|
|
|
1325 specbind (Qstandard_input, readcharfun);
|
|
|
1326 specbind (Qcurrent_load_list, Qnil);
|
|
|
1327
|
|
|
1328 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1329 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1330 #endif
|
|
|
1331 GCPRO1 (sourcename);
|
|
|
1332
|
|
|
1333 LOADHIST_ATTACH (sourcename);
|
|
|
1334
|
|
|
1335 while (1)
|
|
|
1336 {
|
|
|
1337 QUIT;
|
|
|
1338
|
|
|
1339 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
|
1340 error ("Reading from killed buffer");
|
|
|
1341
|
|
|
1342 c = readchar (readcharfun);
|
|
|
1343 if (c == ';')
|
|
|
1344 {
|
|
|
1345 /* Skip comment */
|
|
|
1346 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1347 QUIT;
|
|
|
1348 continue;
|
|
|
1349 }
|
|
|
1350 if (c < 0)
|
|
|
1351 break;
|
|
|
1352
|
|
|
1353 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1354 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1355 continue;
|
|
|
1356
|
|
|
1357 #if 0 /* FSFmacs defun hack */
|
|
|
1358 if (purify_flag && c == '(')
|
|
|
1359 {
|
|
|
1360 int count1 = specpdl_depth ();
|
|
|
1361 record_unwind_protect (unreadpure, Qnil);
|
|
|
1362 val = read_list (readcharfun, ')', -1, 1);
|
|
|
1363 unbind_to (count1, Qnil);
|
|
|
1364 }
|
|
|
1365 else
|
|
|
1366 #else /* No "defun hack" -- Emacs 19 uses read-time syntax for bytecodes */
|
|
|
1367 {
|
|
|
1368 unreadchar (readcharfun, c);
|
|
245
|
1369 read_objects = Qnil;
|
|
0
|
1370 if (NILP (Vload_read_function))
|
|
|
1371 val = read0 (readcharfun);
|
|
|
1372 else
|
|
|
1373 val = call1 (Vload_read_function, readcharfun);
|
|
|
1374 }
|
|
|
1375 #endif
|
|
|
1376 val = (*evalfun) (val);
|
|
|
1377 if (printflag)
|
|
|
1378 {
|
|
|
1379 Vvalues = Fcons (val, Vvalues);
|
|
|
1380 if (EQ (Vstandard_output, Qt))
|
|
|
1381 Fprin1 (val, Qnil);
|
|
|
1382 else
|
|
|
1383 Fprint (val, Qnil);
|
|
|
1384 }
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1388 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1389 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1390 sourcename);
|
|
|
1391 UNGCPRO;
|
|
|
1392
|
|
|
1393 unbind_to (speccount, Qnil);
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 #ifndef standalone
|
|
|
1397
|
|
20
|
1398 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /*
|
|
0
|
1399 Execute BUFFER as Lisp code.
|
|
|
1400 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1401 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1402 PRINTFLAG controls printing of output:
|
|
|
1403 nil means discard it; anything else is stream for print.
|
|
|
1404
|
|
|
1405 If there is no error, point does not move. If there is an error,
|
|
|
1406 point remains at the end of the last character read from the buffer.
|
|
|
1407 Execute BUFFER as Lisp code.
|
|
20
|
1408 */
|
|
|
1409 (bufname, printflag))
|
|
0
|
1410 {
|
|
|
1411 /* This function can GC */
|
|
|
1412 int speccount = specpdl_depth ();
|
|
|
1413 Lisp_Object tem, buf;
|
|
|
1414
|
|
|
1415 if (NILP (bufname))
|
|
|
1416 buf = Fcurrent_buffer ();
|
|
|
1417 else
|
|
|
1418 buf = Fget_buffer (bufname);
|
|
|
1419 if (NILP (buf))
|
|
|
1420 error ("No such buffer.");
|
|
|
1421
|
|
|
1422 if (NILP (printflag))
|
|
|
1423 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1424 else
|
|
|
1425 tem = printflag;
|
|
|
1426 specbind (Qstandard_output, tem);
|
|
|
1427 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1428 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1429 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1430 !NILP (printflag));
|
|
|
1431
|
|
|
1432 return unbind_to (speccount, Qnil);
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 #if 0
|
|
149
|
1436 xxDEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /*
|
|
0
|
1437 Execute the current buffer as Lisp code.
|
|
|
1438 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1439 nil means discard it; anything else is stream for print.
|
|
|
1440
|
|
|
1441 If there is no error, point does not move. If there is an error,
|
|
|
1442 point remains at the end of the last character read from the buffer.
|
|
149
|
1443 */
|
|
|
1444 (printflag))
|
|
0
|
1445 {
|
|
|
1446 code omitted;
|
|
|
1447 }
|
|
149
|
1448 #endif /* 0 */
|
|
0
|
1449
|
|
20
|
1450 DEFUN ("eval-region", Feval_region, 2, 3, "r", /*
|
|
0
|
1451 Execute the region as Lisp code.
|
|
|
1452 When called from programs, expects two arguments,
|
|
|
1453 giving starting and ending indices in the current buffer
|
|
|
1454 of the text to be executed.
|
|
|
1455 Programs can pass third argument PRINTFLAG which controls output:
|
|
|
1456 nil means discard it; anything else is stream for printing it.
|
|
|
1457
|
|
|
1458 If there is no error, point does not move. If there is an error,
|
|
|
1459 point remains at the end of the last character read from the buffer.
|
|
|
1460
|
|
|
1461 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1462 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1463 see some text temporarily disappear because of this.
|
|
20
|
1464 */
|
|
|
1465 (b, e, printflag))
|
|
0
|
1466 {
|
|
|
1467 /* This function can GC */
|
|
|
1468 int speccount = specpdl_depth ();
|
|
|
1469 Lisp_Object tem;
|
|
|
1470 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1471
|
|
|
1472 if (NILP (printflag))
|
|
|
1473 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1474 else
|
|
|
1475 tem = printflag;
|
|
|
1476 specbind (Qstandard_output, tem);
|
|
|
1477
|
|
|
1478 if (NILP (printflag))
|
|
|
1479 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1480 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1481
|
|
|
1482 /* This both uses b and checks its type. */
|
|
|
1483 Fgoto_char (b, cbuf);
|
|
|
1484 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), e, cbuf);
|
|
|
1485 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
|
1486 !NILP (printflag));
|
|
|
1487
|
|
|
1488 return unbind_to (speccount, Qnil);
|
|
|
1489 }
|
|
|
1490
|
|
|
1491 #endif /* standalone */
|
|
|
1492
|
|
20
|
1493 DEFUN ("read", Fread, 0, 1, 0, /*
|
|
0
|
1494 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1495 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1496 STREAM or the value of `standard-input' may be:
|
|
|
1497 a buffer (read from point and advance it)
|
|
|
1498 a marker (read from where it points and advance it)
|
|
|
1499 a function (call it with no arguments for each character,
|
|
|
1500 call it with a char as argument to push a char back)
|
|
|
1501 a string (takes text from string, starting at the beginning)
|
|
|
1502 t (read text line using minibuffer and use it).
|
|
20
|
1503 */
|
|
|
1504 (stream))
|
|
0
|
1505 {
|
|
|
1506 if (NILP (stream))
|
|
|
1507 stream = Vstandard_input;
|
|
|
1508 if (EQ (stream, Qt))
|
|
|
1509 stream = Qread_char;
|
|
|
1510
|
|
245
|
1511 read_objects = Qnil;
|
|
|
1512
|
|
0
|
1513 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1514 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1515 #endif
|
|
|
1516 #ifndef standalone
|
|
|
1517 if (EQ (stream, Qread_char))
|
|
|
1518 {
|
|
173
|
1519 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
0
|
1520 build_translated_string ("Lisp expression: "));
|
|
173
|
1521 return Fcar (Fread_from_string (val, Qnil, Qnil));
|
|
0
|
1522 }
|
|
|
1523 #endif
|
|
|
1524
|
|
|
1525 if (STRINGP (stream))
|
|
|
1526 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1527
|
|
|
1528 return read0 (stream);
|
|
|
1529 }
|
|
|
1530
|
|
20
|
1531 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /*
|
|
0
|
1532 Read one Lisp expression which is represented as text by STRING.
|
|
|
1533 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1534 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1535 they default to 0 and (length STRING) respectively.
|
|
20
|
1536 */
|
|
|
1537 (string, start, end))
|
|
0
|
1538 {
|
|
|
1539 Bytecount startval, endval;
|
|
|
1540 Lisp_Object tem;
|
|
|
1541 Lisp_Object lispstream = Qnil;
|
|
|
1542 struct gcpro gcpro1;
|
|
|
1543
|
|
|
1544 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1545 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1546 #endif
|
|
|
1547 GCPRO1 (lispstream);
|
|
|
1548 CHECK_STRING (string);
|
|
|
1549 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1550 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1551 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1552 endval - startval);
|
|
|
1553
|
|
245
|
1554 read_objects = Qnil;
|
|
|
1555
|
|
0
|
1556 tem = read0 (lispstream);
|
|
|
1557 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1558 At least our reader is reentrant ... */
|
|
|
1559 tem =
|
|
|
1560 (Fcons (tem, make_int
|
|
|
1561 (bytecount_to_charcount
|
|
16
|
1562 (XSTRING_DATA (string),
|
|
0
|
1563 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1564 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1565 UNGCPRO;
|
|
|
1566 return tem;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569
|
|
|
1570 #ifdef LISP_BACKQUOTES
|
|
|
1571
|
|
|
1572 static Lisp_Object
|
|
|
1573 backquote_unwind (Lisp_Object ptr)
|
|
|
1574 { /* used as unwind-protect function in read0() */
|
|
|
1575 int *counter = (int *) get_opaque_ptr (ptr);
|
|
|
1576 if (--*counter < 0)
|
|
173
|
1577 *counter = 0;
|
|
0
|
1578 free_opaque_ptr (ptr);
|
|
|
1579 return Qnil;
|
|
|
1580 }
|
|
|
1581
|
|
173
|
1582 #endif
|
|
0
|
1583
|
|
|
1584 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1585 are not allowed. See also read1(). */
|
|
|
1586 static Lisp_Object
|
|
|
1587 read0 (Lisp_Object readcharfun)
|
|
|
1588 {
|
|
|
1589 Lisp_Object val;
|
|
|
1590
|
|
|
1591 val = read1 (readcharfun);
|
|
|
1592 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1593 {
|
|
|
1594 Emchar c = XCHAR (XCDR (val));
|
|
|
1595 free_cons (XCONS (val));
|
|
|
1596 return Fsignal (Qinvalid_read_syntax,
|
|
|
1597 list1 (Fchar_to_string (make_char (c))));
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 return val;
|
|
|
1601 }
|
|
|
1602
|
|
|
1603 static Emchar
|
|
|
1604 read_escape (Lisp_Object readcharfun)
|
|
|
1605 {
|
|
|
1606 /* This function can GC */
|
|
|
1607 Emchar c = readchar (readcharfun);
|
|
|
1608 switch (c)
|
|
|
1609 {
|
|
|
1610 case 'a': return '\007';
|
|
|
1611 case 'b': return '\b';
|
|
|
1612 case 'd': return 0177;
|
|
|
1613 case 'e': return 033;
|
|
|
1614 case 'f': return '\f';
|
|
|
1615 case 'n': return '\n';
|
|
|
1616 case 'r': return '\r';
|
|
|
1617 case 't': return '\t';
|
|
|
1618 case 'v': return '\v';
|
|
|
1619 case '\n': return -1;
|
|
|
1620
|
|
|
1621 case 'M':
|
|
|
1622 c = readchar (readcharfun);
|
|
|
1623 if (c != '-')
|
|
|
1624 error ("Invalid escape character syntax");
|
|
|
1625 c = readchar (readcharfun);
|
|
|
1626 if (c == '\\')
|
|
|
1627 c = read_escape (readcharfun);
|
|
|
1628 return c | 0200;
|
|
|
1629
|
|
|
1630 #define FSF_KEYS
|
|
|
1631 #ifdef FSF_KEYS
|
|
|
1632
|
|
|
1633 #define alt_modifier (0x040000)
|
|
|
1634 #define super_modifier (0x080000)
|
|
|
1635 #define hyper_modifier (0x100000)
|
|
|
1636 #define shift_modifier (0x200000)
|
|
|
1637 /* fsf uses a different modifiers for meta and control. Possibly
|
|
173
|
1638 byte_compiled code will still work fsfmacs, though... --Stig
|
|
0
|
1639
|
|
|
1640 #define ctl_modifier (0x400000)
|
|
173
|
1641 #define meta_modifier (0x800000)
|
|
0
|
1642 */
|
|
|
1643 #define FSF_LOSSAGE(mask) \
|
|
|
1644 if (puke_on_fsf_keys || ((c = readchar (readcharfun)) != '-')) \
|
|
|
1645 error ("Invalid escape character syntax"); \
|
|
|
1646 if ((c = readchar (readcharfun)) == '\\') \
|
|
|
1647 c = read_escape (readcharfun); \
|
|
|
1648 return c | mask
|
|
|
1649
|
|
|
1650 case 'S': FSF_LOSSAGE (shift_modifier);
|
|
|
1651 case 'H': FSF_LOSSAGE (hyper_modifier);
|
|
|
1652 case 'A': FSF_LOSSAGE (alt_modifier);
|
|
|
1653 case 's': FSF_LOSSAGE (super_modifier);
|
|
|
1654 #undef alt_modifier
|
|
|
1655 #undef super_modifier
|
|
|
1656 #undef hyper_modifier
|
|
|
1657 #undef shift_modifier
|
|
|
1658 #undef FSF_LOSSAGE
|
|
|
1659
|
|
|
1660 #endif /* FSF_KEYS */
|
|
|
1661
|
|
|
1662 case 'C':
|
|
|
1663 c = readchar (readcharfun);
|
|
|
1664 if (c != '-')
|
|
|
1665 error ("Invalid escape character syntax");
|
|
|
1666 case '^':
|
|
|
1667 c = readchar (readcharfun);
|
|
|
1668 if (c == '\\')
|
|
|
1669 c = read_escape (readcharfun);
|
|
|
1670 /* FSFmacs junk for non-ASCII controls.
|
|
|
1671 Not used here. */
|
|
|
1672 if (c == '?')
|
|
|
1673 return 0177;
|
|
|
1674 else
|
|
173
|
1675 return c & (0200 | 037);
|
|
|
1676
|
|
0
|
1677 case '0':
|
|
|
1678 case '1':
|
|
|
1679 case '2':
|
|
|
1680 case '3':
|
|
|
1681 case '4':
|
|
|
1682 case '5':
|
|
|
1683 case '6':
|
|
|
1684 case '7':
|
|
|
1685 /* An octal escape, as in ANSI C. */
|
|
|
1686 {
|
|
|
1687 REGISTER Emchar i = c - '0';
|
|
|
1688 REGISTER int count = 0;
|
|
|
1689 while (++count < 3)
|
|
|
1690 {
|
|
|
1691 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1692 i = (i << 3) + (c - '0');
|
|
|
1693 else
|
|
|
1694 {
|
|
|
1695 unreadchar (readcharfun, c);
|
|
|
1696 break;
|
|
|
1697 }
|
|
|
1698 }
|
|
|
1699 return i;
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 case 'x':
|
|
|
1703 /* A hex escape, as in ANSI C. */
|
|
|
1704 {
|
|
|
1705 REGISTER Emchar i = 0;
|
|
|
1706 while (1)
|
|
|
1707 {
|
|
|
1708 c = readchar (readcharfun);
|
|
|
1709 /* Remember, can't use isdigit(), isalpha() etc. on Emchars */
|
|
|
1710 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1711 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1712 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1713 else
|
|
|
1714 {
|
|
|
1715 unreadchar (readcharfun, c);
|
|
|
1716 break;
|
|
|
1717 }
|
|
|
1718 }
|
|
|
1719 return i;
|
|
|
1720 }
|
|
|
1721
|
|
70
|
1722 #ifdef MULE
|
|
|
1723 /* #### need some way of reading an extended character with
|
|
|
1724 an escape sequence. */
|
|
|
1725 #endif
|
|
16
|
1726
|
|
0
|
1727 default:
|
|
|
1728 return c;
|
|
|
1729 }
|
|
|
1730 }
|
|
|
1731
|
|
|
1732
|
|
|
1733
|
|
|
1734 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1735 static Bytecount
|
|
|
1736 read_atom_0 (Lisp_Object readcharfun, Emchar firstchar, int *saw_a_backslash)
|
|
|
1737 {
|
|
|
1738 /* This function can GC */
|
|
|
1739 Emchar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
|
1740 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1741
|
|
|
1742 *saw_a_backslash = 0;
|
|
|
1743
|
|
|
1744 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1745 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1746 || c == '(' || c == ')'
|
|
|
1747 #ifndef LISP_FLOAT_TYPE
|
|
|
1748 /* If we have floating-point support, then we need
|
|
|
1749 to allow <digits><dot><digits>. */
|
|
|
1750 || c =='.'
|
|
|
1751 #endif /* not LISP_FLOAT_TYPE */
|
|
|
1752 || c == '[' || c == ']' || c == '#'
|
|
|
1753 ))
|
|
|
1754 {
|
|
|
1755 if (c == '\\')
|
|
|
1756 {
|
|
|
1757 c = readchar (readcharfun);
|
|
|
1758 *saw_a_backslash = 1;
|
|
|
1759 }
|
|
|
1760 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
1761 QUIT;
|
|
|
1762 c = readchar (readcharfun);
|
|
|
1763 }
|
|
|
1764
|
|
|
1765 if (c >= 0)
|
|
|
1766 unreadchar (readcharfun, c);
|
|
|
1767 /* blasted terminating 0 */
|
|
|
1768 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), 0);
|
|
|
1769 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1770
|
|
173
|
1771 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1;
|
|
0
|
1772 }
|
|
|
1773
|
|
|
1774 static Lisp_Object parse_integer (CONST Bufbyte *buf, Bytecount len, int base);
|
|
|
1775
|
|
|
1776 static Lisp_Object
|
|
|
1777 read_atom (Lisp_Object readcharfun,
|
|
|
1778 Emchar firstchar,
|
|
|
1779 int uninterned_symbol)
|
|
|
1780 {
|
|
|
1781 /* This function can GC */
|
|
|
1782 int saw_a_backslash;
|
|
|
1783 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1784 char *read_ptr = (char *)
|
|
|
1785 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1786
|
|
|
1787 /* Is it an integer? */
|
|
|
1788 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1789 {
|
|
|
1790 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1791 being an integer or a float. This means that 123\456 is a
|
|
|
1792 symbol, as is \123 (which is the way (intern "123") prints).
|
|
110
|
1793 Also, if token was preceded by #:, it's always a symbol.
|
|
0
|
1794 */
|
|
|
1795 char *p = read_ptr + len;
|
|
|
1796 char *p1 = read_ptr;
|
|
|
1797
|
|
|
1798 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1799 if (p1 != p)
|
|
|
1800 {
|
|
|
1801 int c;
|
|
|
1802
|
|
|
1803 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1804 p1++;
|
|
|
1805 #ifdef LISP_FLOAT_TYPE
|
|
|
1806 /* Integers can have trailing decimal points. */
|
|
|
1807 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1808 p1++;
|
|
|
1809 #endif
|
|
|
1810 if (p1 == p)
|
|
|
1811 {
|
|
|
1812 /* It is an integer. */
|
|
|
1813 #ifdef LISP_FLOAT_TYPE
|
|
|
1814 if (p1[-1] == '.')
|
|
|
1815 p1[-1] = '\0';
|
|
|
1816 #endif
|
|
|
1817 #if 0
|
|
|
1818 {
|
|
|
1819 int number = 0;
|
|
|
1820 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1821 number = atoi (read_buffer);
|
|
|
1822 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1823 number = atol (read_buffer);
|
|
|
1824 else
|
|
|
1825 abort ();
|
|
173
|
1826 return make_int (number);
|
|
0
|
1827 }
|
|
|
1828 #else
|
|
173
|
1829 return parse_integer ((Bufbyte *) read_ptr, len, 10);
|
|
0
|
1830 #endif
|
|
|
1831 }
|
|
|
1832 }
|
|
|
1833 #ifdef LISP_FLOAT_TYPE
|
|
|
1834 if (isfloat_string (read_ptr))
|
|
|
1835 return make_float (atof (read_ptr));
|
|
|
1836 #endif
|
|
|
1837 }
|
|
|
1838
|
|
|
1839 {
|
|
|
1840 Lisp_Object sym;
|
|
|
1841 if (uninterned_symbol)
|
|
173
|
1842 sym = (Fmake_symbol ((purify_flag)
|
|
0
|
1843 ? make_pure_pname ((Bufbyte *) read_ptr, len, 0)
|
|
|
1844 : make_string ((Bufbyte *) read_ptr, len)));
|
|
|
1845 else
|
|
|
1846 {
|
|
|
1847 /* intern will purecopy pname if necessary */
|
|
|
1848 Lisp_Object name = make_string ((Bufbyte *) read_ptr, len);
|
|
|
1849 sym = Fintern (name, Qnil);
|
|
|
1850 }
|
|
|
1851 if (SYMBOL_IS_KEYWORD (sym))
|
|
|
1852 {
|
|
|
1853 /* the LISP way is to put keywords in their own package, but we don't
|
|
|
1854 have packages, so we do something simpler. Someday, maybe we'll
|
|
|
1855 have packages and then this will be reworked. --Stig. */
|
|
|
1856 XSYMBOL (sym)->value = sym;
|
|
|
1857 }
|
|
173
|
1858 return sym;
|
|
0
|
1859 }
|
|
|
1860 }
|
|
|
1861
|
|
|
1862
|
|
|
1863 static Lisp_Object
|
|
|
1864 parse_integer (CONST Bufbyte *buf, Bytecount len, int base)
|
|
|
1865 {
|
|
|
1866 CONST Bufbyte *lim = buf + len;
|
|
|
1867 CONST Bufbyte *p = buf;
|
|
|
1868 unsigned EMACS_INT num = 0;
|
|
|
1869 int negativland = 0;
|
|
|
1870
|
|
|
1871 if (*p == '-')
|
|
|
1872 {
|
|
|
1873 negativland = 1;
|
|
|
1874 p++;
|
|
|
1875 }
|
|
|
1876 else if (*p == '+')
|
|
|
1877 {
|
|
|
1878 p++;
|
|
|
1879 }
|
|
|
1880
|
|
|
1881 if (p == lim)
|
|
|
1882 goto loser;
|
|
|
1883
|
|
142
|
1884 for (; (p < lim) && (*p != '\0'); p++)
|
|
0
|
1885 {
|
|
|
1886 int c = *p;
|
|
|
1887 unsigned EMACS_INT onum;
|
|
|
1888
|
|
|
1889 if (isdigit (c))
|
|
|
1890 c = c - '0';
|
|
|
1891 else if (isupper (c))
|
|
|
1892 c = c - 'A' + 10;
|
|
|
1893 else if (islower (c))
|
|
|
1894 c = c - 'a' + 10;
|
|
|
1895 else
|
|
|
1896 goto loser;
|
|
173
|
1897
|
|
0
|
1898 if (c < 0 || c >= base)
|
|
|
1899 goto loser;
|
|
|
1900
|
|
|
1901 onum = num;
|
|
|
1902 num = num * base + c;
|
|
|
1903 if (num < onum)
|
|
|
1904 goto overflow;
|
|
|
1905 }
|
|
|
1906
|
|
|
1907 {
|
|
|
1908 Lisp_Object result = make_int ((negativland) ? -num : num);
|
|
|
1909 if (num && ((XINT (result) < 0) != negativland))
|
|
|
1910 goto overflow;
|
|
|
1911 if (XINT (result) != ((negativland) ? -num : num))
|
|
|
1912 goto overflow;
|
|
173
|
1913 return result;
|
|
0
|
1914 }
|
|
|
1915 overflow:
|
|
173
|
1916 return Fsignal (Qinvalid_read_syntax,
|
|
0
|
1917 list3 (build_translated_string
|
|
|
1918 ("Integer constant overflow in reader"),
|
|
|
1919 make_string (buf, len),
|
|
|
1920 make_int (base)));
|
|
|
1921 loser:
|
|
173
|
1922 return Fsignal (Qinvalid_read_syntax,
|
|
0
|
1923 list3 (build_translated_string
|
|
|
1924 ("Invalid integer constant in reader"),
|
|
|
1925 make_string (buf, len),
|
|
|
1926 make_int (base)));
|
|
|
1927 }
|
|
|
1928
|
|
|
1929
|
|
|
1930 static Lisp_Object
|
|
|
1931 read_integer (Lisp_Object readcharfun, int base)
|
|
|
1932 {
|
|
|
1933 /* This function can GC */
|
|
|
1934 int saw_a_backslash;
|
|
|
1935 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
1936 return (parse_integer
|
|
|
1937 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
1938 ((saw_a_backslash)
|
|
|
1939 ? 0 /* make parse_integer signal error */
|
|
|
1940 : len),
|
|
|
1941 base));
|
|
|
1942 }
|
|
|
1943
|
|
|
1944 static Lisp_Object
|
|
|
1945 read_bit_vector (Lisp_Object readcharfun)
|
|
|
1946 {
|
|
185
|
1947 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char);
|
|
0
|
1948 Emchar c;
|
|
|
1949
|
|
|
1950 while (1)
|
|
|
1951 {
|
|
|
1952 c = readchar (readcharfun);
|
|
|
1953 if (c != '0' && c != '1')
|
|
|
1954 break;
|
|
|
1955 Dynarr_add (dyn, (unsigned char) (c - '0'));
|
|
|
1956 }
|
|
|
1957
|
|
|
1958 if (c >= 0)
|
|
|
1959 unreadchar (readcharfun, c);
|
|
|
1960
|
|
|
1961 return make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
1962 Dynarr_length (dyn));
|
|
|
1963 }
|
|
|
1964
|
|
|
1965
|
|
|
1966
|
|
|
1967 /* structures */
|
|
|
1968
|
|
|
1969 struct structure_type *
|
|
|
1970 define_structure_type (Lisp_Object type,
|
|
|
1971 int (*validate) (Lisp_Object data,
|
|
|
1972 Error_behavior errb),
|
|
|
1973 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
1974 {
|
|
|
1975 struct structure_type st;
|
|
|
1976
|
|
|
1977 st.type = type;
|
|
185
|
1978 st.keywords = Dynarr_new (structure_keyword_entry);
|
|
0
|
1979 st.validate = validate;
|
|
|
1980 st.instantiate = instantiate;
|
|
|
1981 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
1982
|
|
|
1983 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
1984 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
1985 }
|
|
|
1986
|
|
|
1987 void
|
|
|
1988 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
1989 int (*validate) (Lisp_Object keyword,
|
|
|
1990 Lisp_Object value,
|
|
|
1991 Error_behavior errb))
|
|
|
1992 {
|
|
|
1993 struct structure_keyword_entry en;
|
|
|
1994
|
|
|
1995 en.keyword = keyword;
|
|
|
1996 en.validate = validate;
|
|
|
1997 Dynarr_add (st->keywords, en);
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 static struct structure_type *
|
|
|
2001 recognized_structure_type (Lisp_Object type)
|
|
|
2002 {
|
|
|
2003 int i;
|
|
|
2004
|
|
|
2005 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
2006 {
|
|
|
2007 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
2008 if (EQ (st->type, type))
|
|
|
2009 return st;
|
|
|
2010 }
|
|
|
2011
|
|
|
2012 return 0;
|
|
|
2013 }
|
|
|
2014
|
|
|
2015 static Lisp_Object
|
|
|
2016 read_structure (Lisp_Object readcharfun)
|
|
|
2017 {
|
|
|
2018 Emchar c = readchar (readcharfun);
|
|
|
2019 Lisp_Object list = Qnil;
|
|
|
2020 Lisp_Object orig_list = Qnil;
|
|
|
2021 Lisp_Object already_seen = Qnil;
|
|
173
|
2022 int keyword_count;
|
|
0
|
2023 struct structure_type *st;
|
|
|
2024 struct gcpro gcpro1, gcpro2;
|
|
|
2025
|
|
|
2026 GCPRO2 (orig_list, already_seen);
|
|
|
2027 if (c != '(')
|
|
|
2028 RETURN_UNGCPRO (continuable_syntax_error ("#s not followed by paren"));
|
|
|
2029 list = read_list (readcharfun, ')', 0, 0);
|
|
|
2030 orig_list = list;
|
|
|
2031 {
|
|
|
2032 int len = XINT (Flength (list));
|
|
|
2033 if (len == 0)
|
|
|
2034 RETURN_UNGCPRO (continuable_syntax_error
|
|
|
2035 ("structure type not specified"));
|
|
|
2036 if (!(len & 1))
|
|
|
2037 RETURN_UNGCPRO
|
|
|
2038 (continuable_syntax_error
|
|
|
2039 ("structures must have alternating keyword/value pairs"));
|
|
|
2040 }
|
|
173
|
2041
|
|
0
|
2042 st = recognized_structure_type (XCAR (list));
|
|
|
2043 if (!st)
|
|
173
|
2044 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2045 list2 (build_translated_string
|
|
|
2046 ("unrecognized structure type"),
|
|
|
2047 XCAR (list))));
|
|
0
|
2048
|
|
|
2049 list = Fcdr (list);
|
|
173
|
2050 keyword_count = Dynarr_length (st->keywords);
|
|
0
|
2051 while (!NILP (list))
|
|
|
2052 {
|
|
|
2053 Lisp_Object keyword, value;
|
|
|
2054 int i;
|
|
173
|
2055 struct structure_keyword_entry *en = NULL;
|
|
|
2056
|
|
0
|
2057 keyword = Fcar (list);
|
|
|
2058 list = Fcdr (list);
|
|
|
2059 value = Fcar (list);
|
|
|
2060 list = Fcdr (list);
|
|
173
|
2061
|
|
0
|
2062 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
173
|
2063 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2064 list2 (build_translated_string
|
|
|
2065 ("structure keyword already seen"),
|
|
|
2066 keyword)));
|
|
|
2067
|
|
|
2068 for (i = 0; i < keyword_count; i++)
|
|
0
|
2069 {
|
|
|
2070 en = Dynarr_atp (st->keywords, i);
|
|
|
2071 if (EQ (keyword, en->keyword))
|
|
|
2072 break;
|
|
|
2073 }
|
|
|
2074
|
|
173
|
2075 if (i == keyword_count)
|
|
0
|
2076 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2077 list2 (build_translated_string
|
|
|
2078 ("unrecognized structure keyword"),
|
|
|
2079 keyword)));
|
|
|
2080
|
|
|
2081 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
2082 RETURN_UNGCPRO
|
|
|
2083 (Fsignal (Qinvalid_read_syntax,
|
|
|
2084 list3 (build_translated_string
|
|
|
2085 ("invalid value for structure keyword"),
|
|
|
2086 keyword, value)));
|
|
|
2087
|
|
|
2088 already_seen = Fcons (keyword, already_seen);
|
|
|
2089 }
|
|
|
2090
|
|
|
2091 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
173
|
2092 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2093 list2 (build_translated_string
|
|
|
2094 ("invalid structure initializer"),
|
|
|
2095 orig_list)));
|
|
0
|
2096
|
|
|
2097 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
173
|
2098 }
|
|
0
|
2099
|
|
|
2100
|
|
|
2101 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
2102 int terminator);
|
|
|
2103 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
2104
|
|
|
2105 /* Get the next character; filter out whitespace and comments */
|
|
|
2106
|
|
|
2107 static Emchar
|
|
|
2108 reader_nextchar (Lisp_Object readcharfun)
|
|
|
2109 {
|
|
|
2110 /* This function can GC */
|
|
|
2111 Emchar c;
|
|
|
2112
|
|
|
2113 retry:
|
|
|
2114 QUIT;
|
|
|
2115 c = readchar (readcharfun);
|
|
|
2116 if (c < 0)
|
|
|
2117 {
|
|
|
2118 if (LSTREAMP (readcharfun))
|
|
|
2119 signal_error (Qend_of_file,
|
|
|
2120 list1 (build_string ("internal input stream")));
|
|
|
2121 else
|
|
|
2122 signal_error (Qend_of_file, list1 (readcharfun));
|
|
|
2123 }
|
|
|
2124
|
|
|
2125 switch (c)
|
|
|
2126 {
|
|
|
2127 default:
|
|
|
2128 {
|
|
|
2129 /* Ignore whitespace and control characters */
|
|
|
2130 if (c <= 040)
|
|
|
2131 goto retry;
|
|
173
|
2132 return c;
|
|
0
|
2133 }
|
|
|
2134
|
|
|
2135 case ';':
|
|
|
2136 {
|
|
|
2137 /* Comment */
|
|
|
2138 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2139 QUIT;
|
|
|
2140 goto retry;
|
|
|
2141 }
|
|
|
2142 }
|
|
|
2143 }
|
|
|
2144
|
|
|
2145 #if 0
|
|
|
2146 static Lisp_Object
|
|
|
2147 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2148 {
|
|
173
|
2149 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b);
|
|
0
|
2150 }
|
|
|
2151 #endif
|
|
|
2152
|
|
|
2153 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2154 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2155 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2156 or dot followed by a non-number). To filter this stuff out,
|
|
|
2157 use read0(). */
|
|
173
|
2158
|
|
0
|
2159 static Lisp_Object
|
|
|
2160 read1 (Lisp_Object readcharfun)
|
|
|
2161 {
|
|
|
2162 Emchar c;
|
|
|
2163
|
|
|
2164 retry:
|
|
|
2165 c = reader_nextchar (readcharfun);
|
|
|
2166
|
|
|
2167 switch (c)
|
|
|
2168 {
|
|
|
2169 case '(':
|
|
|
2170 {
|
|
|
2171 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2172 /* if this is disabled, then other code in eval.c must be enabled */
|
|
|
2173 Emchar ch = reader_nextchar (readcharfun);
|
|
|
2174 switch (ch)
|
|
|
2175 {
|
|
|
2176 case '`':
|
|
|
2177 {
|
|
|
2178 Lisp_Object tem;
|
|
|
2179 int speccount = specpdl_depth ();
|
|
|
2180 ++old_backquote_flag;
|
|
|
2181 record_unwind_protect (backquote_unwind,
|
|
|
2182 make_opaque_ptr (&old_backquote_flag));
|
|
|
2183 tem = read0 (readcharfun);
|
|
|
2184 unbind_to (speccount, Qnil);
|
|
|
2185 ch = reader_nextchar (readcharfun);
|
|
|
2186 if (ch != ')')
|
|
|
2187 {
|
|
|
2188 unreadchar (readcharfun, ch);
|
|
|
2189 return Fsignal (Qinvalid_read_syntax,
|
|
|
2190 list1 (build_string
|
|
|
2191 ("Weird old-backquote syntax")));
|
|
|
2192 }
|
|
|
2193 return list2 (Qbacktick, tem);
|
|
|
2194 }
|
|
|
2195 case ',':
|
|
|
2196 {
|
|
|
2197 if (old_backquote_flag)
|
|
|
2198 {
|
|
|
2199 Lisp_Object tem, comma_type;
|
|
|
2200 ch = readchar (readcharfun);
|
|
|
2201 if (ch == '@')
|
|
|
2202 comma_type = Qcomma_at;
|
|
|
2203 else
|
|
|
2204 {
|
|
|
2205 if (ch >= 0)
|
|
|
2206 unreadchar (readcharfun, ch);
|
|
|
2207 comma_type = Qcomma;
|
|
|
2208 }
|
|
|
2209 tem = read0 (readcharfun);
|
|
|
2210 ch = reader_nextchar (readcharfun);
|
|
|
2211 if (ch != ')')
|
|
|
2212 {
|
|
|
2213 unreadchar (readcharfun, ch);
|
|
|
2214 return Fsignal (Qinvalid_read_syntax,
|
|
|
2215 list1 (build_string
|
|
|
2216 ("Weird old-backquote syntax")));
|
|
|
2217 }
|
|
|
2218 return list2 (comma_type, tem);
|
|
|
2219 }
|
|
|
2220 else
|
|
|
2221 {
|
|
|
2222 unreadchar (readcharfun, ch);
|
|
|
2223 #if 0
|
|
|
2224 return Fsignal (Qinvalid_read_syntax,
|
|
|
2225 list1 (build_string ("Comma outside of backquote")));
|
|
|
2226 #else
|
|
|
2227 /* #### - yuck....but this is reverse compatible. */
|
|
|
2228 /* mostly this is required by edebug, which does it's own
|
|
|
2229 annotated reading. We need to have an annotated_read
|
|
|
2230 function that records (with markers) the buffer
|
|
|
2231 positions of the elements that make up lists, then that
|
|
|
2232 can be used in edebug and bytecomp and the check above
|
|
|
2233 can go back in. --Stig */
|
|
|
2234 break;
|
|
|
2235 #endif
|
|
|
2236 }
|
|
|
2237 }
|
|
|
2238 default:
|
|
|
2239 unreadchar (readcharfun, ch);
|
|
|
2240 } /* switch(ch) */
|
|
|
2241 #endif /* old backquote crap... */
|
|
|
2242 return read_list (readcharfun, ')', 1, 1);
|
|
|
2243 }
|
|
|
2244 case '[':
|
|
173
|
2245 return read_vector (readcharfun, ']');
|
|
0
|
2246
|
|
|
2247 case ')':
|
|
|
2248 case ']':
|
|
|
2249 /* #### - huh? these don't do what they seem... */
|
|
173
|
2250 return noseeum_cons (Qunbound, make_char (c));
|
|
0
|
2251 case '.':
|
|
|
2252 {
|
|
|
2253 #ifdef LISP_FLOAT_TYPE
|
|
|
2254 /* If a period is followed by a number, then we should read it
|
|
|
2255 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2256 pair.
|
|
|
2257 */
|
|
|
2258 c = readchar (readcharfun);
|
|
|
2259 unreadchar (readcharfun, c);
|
|
|
2260
|
|
|
2261 /* Can't use isdigit on Emchars */
|
|
|
2262 if (c < '0' || c > '9')
|
|
173
|
2263 return noseeum_cons (Qunbound, make_char ('.'));
|
|
0
|
2264
|
|
|
2265 /* Note that read_atom will loop
|
|
|
2266 at least once, assuring that we will not try to UNREAD
|
|
|
2267 two characters in a row.
|
|
|
2268 (I think this doesn't matter anymore because there should
|
|
|
2269 be no more danger in unreading multiple characters) */
|
|
173
|
2270 return read_atom (readcharfun, '.', 0);
|
|
0
|
2271
|
|
|
2272 #else /* ! LISP_FLOAT_TYPE */
|
|
173
|
2273 return noseeum_cons (Qunbound, make_char ('.'));
|
|
0
|
2274 #endif /* ! LISP_FLOAT_TYPE */
|
|
|
2275 }
|
|
|
2276
|
|
|
2277 case '#':
|
|
|
2278 {
|
|
|
2279 c = readchar (readcharfun);
|
|
|
2280 switch (c)
|
|
|
2281 {
|
|
|
2282 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2283 case '^':
|
|
|
2284 #endif
|
|
|
2285 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2286 case '&':
|
|
|
2287 #endif
|
|
|
2288 /* "#["-- byte-code constant syntax */
|
|
|
2289 /* purecons #[...] syntax */
|
|
173
|
2290 case '[': return read_compiled_function (readcharfun, ']'
|
|
|
2291 /*, purify_flag */ );
|
|
0
|
2292 /* "#:"-- quasi-implemented gensym syntax */
|
|
173
|
2293 case ':': return read_atom (readcharfun, -1, 1);
|
|
0
|
2294 /* #'x => (function x) */
|
|
173
|
2295 case '\'': return list2 (Qfunction, read0 (readcharfun));
|
|
0
|
2296 #if 0
|
|
|
2297 /* RMS uses this syntax for fat-strings.
|
|
|
2298 If we use it for vectors, then obscure bugs happen.
|
|
|
2299 */
|
|
|
2300 /* "#(" -- Scheme/CL vector syntax */
|
|
173
|
2301 case '(': return read_vector (readcharfun, ')');
|
|
0
|
2302 #endif
|
|
|
2303 #if 0 /* FSFmacs */
|
|
|
2304 case '(':
|
|
|
2305 {
|
|
|
2306 Lisp_Object tmp;
|
|
|
2307 struct gcpro gcpro1;
|
|
|
2308
|
|
|
2309 /* Read the string itself. */
|
|
|
2310 tmp = read1 (readcharfun);
|
|
|
2311 if (!STRINGP (tmp))
|
|
|
2312 {
|
|
|
2313 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
|
2314 free_cons (XCONS (tmp));
|
|
173
|
2315 return Fsignal (Qinvalid_read_syntax,
|
|
|
2316 list1 (build_string ("#")));
|
|
0
|
2317 }
|
|
|
2318 GCPRO1 (tmp);
|
|
|
2319 /* Read the intervals and their properties. */
|
|
|
2320 while (1)
|
|
|
2321 {
|
|
|
2322 Lisp_Object beg, end, plist;
|
|
|
2323 Emchar ch;
|
|
|
2324 int invalid = 0;
|
|
173
|
2325
|
|
0
|
2326 beg = read1 (readcharfun);
|
|
|
2327 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2328 {
|
|
|
2329 ch = XCHAR (XCDR (beg));
|
|
|
2330 free_cons (XCONS (beg));
|
|
|
2331 if (ch == ')')
|
|
|
2332 break;
|
|
|
2333 else
|
|
|
2334 invalid = 1;
|
|
|
2335 }
|
|
|
2336 if (!invalid)
|
|
|
2337 {
|
|
|
2338 end = read1 (readcharfun);
|
|
|
2339 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2340 {
|
|
|
2341 free_cons (XCONS (end));
|
|
|
2342 invalid = 1;
|
|
|
2343 }
|
|
|
2344 }
|
|
|
2345 if (!invalid)
|
|
|
2346 {
|
|
|
2347 plist = read1 (readcharfun);
|
|
|
2348 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2349 {
|
|
|
2350 free_cons (XCONS (plist));
|
|
|
2351 invalid = 1;
|
|
|
2352 }
|
|
|
2353 }
|
|
|
2354 if (invalid)
|
|
|
2355 RETURN_UNGCPRO
|
|
|
2356 (Fsignal (Qinvalid_read_syntax,
|
|
|
2357 list2
|
|
|
2358 (build_string ("invalid string property list"),
|
|
|
2359 XCDR (plist))));
|
|
|
2360 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2361 }
|
|
|
2362 UNGCPRO;
|
|
|
2363 return tmp;
|
|
|
2364 }
|
|
|
2365 #endif /* 0 */
|
|
|
2366 case '@':
|
|
|
2367 {
|
|
|
2368 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2369 That's used in .elc files to skip over doc strings
|
|
|
2370 and function definitions. */
|
|
|
2371 int i, nskip = 0;
|
|
|
2372
|
|
|
2373 /* Read a decimal integer. */
|
|
|
2374 while ((c = readchar (readcharfun)) >= 0
|
|
|
2375 && c >= '0' && c <= '9')
|
|
|
2376 nskip = (10 * nskip) + (c - '0');
|
|
|
2377 if (c >= 0)
|
|
|
2378 unreadchar (readcharfun, c);
|
|
|
2379
|
|
|
2380 /* FSF has code here that maybe caches the skipped
|
|
|
2381 string. See above for why this is totally
|
|
|
2382 losing. We handle this differently. */
|
|
|
2383
|
|
|
2384 /* Skip that many characters. */
|
|
|
2385 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2386 c = readchar (readcharfun);
|
|
|
2387
|
|
|
2388 goto retry;
|
|
|
2389 }
|
|
|
2390 case '$': return Vload_file_name_internal;
|
|
|
2391 /* bit vectors */
|
|
173
|
2392 case '*': return read_bit_vector (readcharfun);
|
|
0
|
2393 /* #o10 => 8 -- octal constant syntax */
|
|
173
|
2394 case 'o': return read_integer (readcharfun, 8);
|
|
0
|
2395 /* #xdead => 57005 -- hex constant syntax */
|
|
173
|
2396 case 'x': return read_integer (readcharfun, 16);
|
|
0
|
2397 /* #b010 => 2 -- binary constant syntax */
|
|
173
|
2398 case 'b': return read_integer (readcharfun, 2);
|
|
0
|
2399 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
173
|
2400 case 's': return read_structure (readcharfun);
|
|
0
|
2401 case '<':
|
|
|
2402 {
|
|
|
2403 unreadchar (readcharfun, c);
|
|
|
2404 return Fsignal (Qinvalid_read_syntax,
|
|
|
2405 list1 (build_string ("Cannot read unreadable object")));
|
|
|
2406 }
|
|
140
|
2407 #ifdef FEATUREP_SYNTAX
|
|
|
2408 case '+':
|
|
|
2409 case '-':
|
|
|
2410 {
|
|
|
2411 Lisp_Object fexp, obj, tem;
|
|
|
2412 struct gcpro gcpro1, gcpro2;
|
|
|
2413
|
|
|
2414 fexp = read0(readcharfun);
|
|
|
2415 obj = read0(readcharfun);
|
|
|
2416
|
|
|
2417 /* the call to `featurep' may GC. */
|
|
|
2418 GCPRO2(fexp, obj);
|
|
|
2419 tem = call1(Qfeaturep, fexp);
|
|
|
2420 UNGCPRO;
|
|
|
2421
|
|
|
2422 if (c == '+' && NILP(tem)) goto retry;
|
|
|
2423 if (c == '-' && !NILP(tem)) goto retry;
|
|
|
2424 return obj;
|
|
|
2425 }
|
|
|
2426 #endif
|
|
245
|
2427 case '0': case '1': case '2': case '3': case '4':
|
|
|
2428 case '5': case '6': case '7': case '8': case '9':
|
|
|
2429 /* Reader forms that can reuse previously read objects. */
|
|
|
2430 {
|
|
|
2431 int n = 0;
|
|
|
2432 Lisp_Object found;
|
|
|
2433
|
|
|
2434 /* Using read_integer() here is impossible, because it
|
|
|
2435 chokes on `='. Using parse_integer() is too hard.
|
|
|
2436 So we simply read it in, and ignore overflows, which
|
|
|
2437 is safe. */
|
|
|
2438 while (c >= '0' && c <= '9')
|
|
|
2439 {
|
|
|
2440 n *= 10;
|
|
|
2441 n += c - '0';
|
|
|
2442 c = readchar (readcharfun);
|
|
|
2443 }
|
|
|
2444 found = assq_no_quit (make_int (n), read_objects);
|
|
|
2445 if (c == '=')
|
|
|
2446 {
|
|
|
2447 /* #n=object returns object, but associates it with
|
|
|
2448 n for #n#. */
|
|
|
2449 Lisp_Object obj;
|
|
|
2450 if (CONSP (found))
|
|
|
2451 return Fsignal (Qinvalid_read_syntax,
|
|
|
2452 list2 (build_translated_string
|
|
|
2453 ("Multiply defined symbol label"),
|
|
|
2454 make_int (n)));
|
|
|
2455 obj = read0 (readcharfun);
|
|
|
2456 read_objects = Fcons (Fcons (make_int (n), obj), read_objects);
|
|
|
2457 return obj;
|
|
|
2458 }
|
|
|
2459 else if (c == '#')
|
|
|
2460 {
|
|
|
2461 /* #n# returns a previously read object. */
|
|
|
2462 if (CONSP (found))
|
|
|
2463 return XCDR (found);
|
|
|
2464 else
|
|
|
2465 return Fsignal (Qinvalid_read_syntax,
|
|
|
2466 list2 (build_translated_string
|
|
|
2467 ("Undefined symbol label"),
|
|
|
2468 make_int (n)));
|
|
|
2469 }
|
|
|
2470 return Fsignal (Qinvalid_read_syntax,
|
|
|
2471 list1 (build_string ("#")));
|
|
|
2472 }
|
|
0
|
2473 default:
|
|
|
2474 {
|
|
|
2475 unreadchar (readcharfun, c);
|
|
|
2476 return Fsignal (Qinvalid_read_syntax,
|
|
|
2477 list1 (build_string ("#")));
|
|
|
2478 }
|
|
|
2479 }
|
|
|
2480 }
|
|
|
2481
|
|
|
2482 /* Quote */
|
|
|
2483 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2484
|
|
|
2485 #ifdef LISP_BACKQUOTES
|
|
|
2486 case '`':
|
|
|
2487 {
|
|
|
2488 Lisp_Object tem;
|
|
|
2489 int speccount = specpdl_depth ();
|
|
|
2490 ++new_backquote_flag;
|
|
|
2491 record_unwind_protect (backquote_unwind,
|
|
|
2492 make_opaque_ptr (&new_backquote_flag));
|
|
|
2493 tem = read0 (readcharfun);
|
|
|
2494 unbind_to (speccount, Qnil);
|
|
|
2495 return list2 (Qbackquote, tem);
|
|
|
2496 }
|
|
|
2497
|
|
|
2498 case ',':
|
|
|
2499 {
|
|
|
2500 if (new_backquote_flag)
|
|
|
2501 {
|
|
|
2502 Lisp_Object comma_type = Qnil;
|
|
|
2503 int ch = readchar (readcharfun);
|
|
|
2504
|
|
|
2505 if (ch == '@')
|
|
|
2506 comma_type = Qcomma_at;
|
|
|
2507 else if (ch == '.')
|
|
|
2508 comma_type = Qcomma_dot;
|
|
|
2509 else
|
|
|
2510 {
|
|
|
2511 if (ch >= 0)
|
|
|
2512 unreadchar (readcharfun, ch);
|
|
|
2513 comma_type = Qcomma;
|
|
|
2514 }
|
|
|
2515 return list2 (comma_type, read0 (readcharfun));
|
|
|
2516 }
|
|
|
2517 else
|
|
|
2518 {
|
|
|
2519 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2520 Thing(tm) is to signal an error here, because it's
|
|
|
2521 really invalid read syntax. Instead, this permits
|
|
|
2522 commas to begin symbols (unless they're inside
|
|
|
2523 backquotes). If an error is signalled here in the
|
|
|
2524 future, then commas should be invalid read syntax
|
|
|
2525 outside of backquotes anywhere they're found (i.e.
|
|
|
2526 they must be quoted in symbols) -- Stig */
|
|
173
|
2527 return read_atom (readcharfun, c, 0);
|
|
0
|
2528 }
|
|
|
2529 }
|
|
|
2530 #endif
|
|
|
2531
|
|
|
2532 case '?':
|
|
|
2533 {
|
|
|
2534 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2535 c = readchar (readcharfun);
|
|
|
2536 if (c < 0)
|
|
|
2537 return Fsignal (Qend_of_file, list1 (readcharfun));
|
|
|
2538
|
|
|
2539 if (c == '\\')
|
|
|
2540 c = read_escape (readcharfun);
|
|
173
|
2541 return make_char (c);
|
|
0
|
2542 }
|
|
|
2543
|
|
|
2544 case '\"':
|
|
|
2545 {
|
|
|
2546 /* String */
|
|
|
2547 #ifdef I18N3
|
|
|
2548 /* #### If the input stream is translating, then the string
|
|
|
2549 should be marked as translatable by setting its
|
|
|
2550 `string-translatable' property to t. .el and .elc files
|
|
|
2551 normally are translating input streams. See Fgettext()
|
|
|
2552 and print_internal(). */
|
|
|
2553 #endif
|
|
|
2554 int cancel = 0;
|
|
|
2555
|
|
|
2556 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2557 while ((c = readchar (readcharfun)) >= 0
|
|
|
2558 && c != '\"')
|
|
|
2559 {
|
|
|
2560 if (c == '\\')
|
|
|
2561 c = read_escape (readcharfun);
|
|
|
2562 /* c is -1 if \ newline has just been seen */
|
|
|
2563 if (c == -1)
|
|
|
2564 {
|
|
|
2565 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2566 cancel = 1;
|
|
|
2567 }
|
|
|
2568 else
|
|
|
2569 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
2570 QUIT;
|
|
|
2571 }
|
|
|
2572 if (c < 0)
|
|
|
2573 return Fsignal (Qend_of_file, list1 (readcharfun));
|
|
|
2574
|
|
|
2575 /* If purifying, and string starts with \ newline,
|
|
|
2576 return zero instead. This is for doc strings
|
|
|
2577 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2578 if (purify_flag && NILP (Vdoc_file_name) && cancel)
|
|
173
|
2579 return Qzero;
|
|
0
|
2580
|
|
|
2581 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2582 #if 0 /* FSFmacs defun hack */
|
|
|
2583 if (read_pure)
|
|
|
2584 return
|
|
|
2585 make_pure_string
|
|
|
2586 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2587 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2588 else
|
|
|
2589 #endif
|
|
|
2590 return
|
|
|
2591 make_string
|
|
|
2592 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2593 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2594 }
|
|
|
2595
|
|
|
2596 default:
|
|
|
2597 {
|
|
|
2598 /* Ignore whitespace and control characters */
|
|
|
2599 if (c <= 040)
|
|
|
2600 goto retry;
|
|
173
|
2601 return read_atom (readcharfun, c, 0);
|
|
0
|
2602 }
|
|
|
2603 }
|
|
|
2604 }
|
|
|
2605
|
|
|
2606
|
|
|
2607
|
|
|
2608 #ifdef LISP_FLOAT_TYPE
|
|
|
2609
|
|
|
2610 #define LEAD_INT 1
|
|
|
2611 #define DOT_CHAR 2
|
|
|
2612 #define TRAIL_INT 4
|
|
|
2613 #define E_CHAR 8
|
|
|
2614 #define EXP_INT 16
|
|
|
2615
|
|
|
2616 int
|
|
|
2617 isfloat_string (CONST char *cp)
|
|
|
2618 {
|
|
|
2619 int state = 0;
|
|
|
2620 CONST Bufbyte *ucp = (CONST Bufbyte *) cp;
|
|
173
|
2621
|
|
0
|
2622 if (*ucp == '+' || *ucp == '-')
|
|
|
2623 ucp++;
|
|
|
2624
|
|
|
2625 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2626 {
|
|
|
2627 state |= LEAD_INT;
|
|
|
2628 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2629 ucp++;
|
|
|
2630 }
|
|
|
2631 if (*ucp == '.')
|
|
|
2632 {
|
|
|
2633 state |= DOT_CHAR;
|
|
|
2634 ucp++;
|
|
|
2635 }
|
|
|
2636 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2637 {
|
|
|
2638 state |= TRAIL_INT;
|
|
|
2639 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2640 ucp++;
|
|
|
2641 }
|
|
|
2642 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2643 {
|
|
|
2644 state |= E_CHAR;
|
|
|
2645 ucp++;
|
|
|
2646 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2647 ucp++;
|
|
|
2648 }
|
|
|
2649
|
|
|
2650 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2651 {
|
|
|
2652 state |= EXP_INT;
|
|
|
2653 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2654 ucp++;
|
|
|
2655 }
|
|
|
2656 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2657 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2658 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2659 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2660 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2661 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2662 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2663 }
|
|
|
2664 #endif /* LISP_FLOAT_TYPE */
|
|
|
2665
|
|
|
2666 static void *
|
|
|
2667 sequence_reader (Lisp_Object readcharfun,
|
|
|
2668 Emchar terminator,
|
|
|
2669 void *state,
|
|
|
2670 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2671 void *state, Charcount len))
|
|
|
2672 {
|
|
|
2673 Charcount len;
|
|
|
2674
|
|
|
2675 for (len = 0; ; len++)
|
|
|
2676 {
|
|
|
2677 Emchar ch;
|
|
|
2678
|
|
|
2679 QUIT;
|
|
|
2680 ch = reader_nextchar (readcharfun);
|
|
|
2681
|
|
|
2682 if (ch == terminator)
|
|
173
|
2683 return state;
|
|
0
|
2684 else
|
|
|
2685 unreadchar (readcharfun, ch);
|
|
140
|
2686 #ifdef FEATUREP_SYNTAX
|
|
0
|
2687 if (ch == ']')
|
|
|
2688 syntax_error ("\"]\" in a list");
|
|
|
2689 else if (ch == ')')
|
|
|
2690 syntax_error ("\")\" in a vector");
|
|
140
|
2691 #endif
|
|
0
|
2692 state = ((conser) (readcharfun, state, len));
|
|
|
2693 }
|
|
|
2694 }
|
|
|
2695
|
|
|
2696
|
|
173
|
2697 struct read_list_state
|
|
0
|
2698 {
|
|
|
2699 Lisp_Object head;
|
|
|
2700 Lisp_Object tail;
|
|
|
2701 int length;
|
|
|
2702 int allow_dotted_lists;
|
|
|
2703 Emchar terminator;
|
|
|
2704 };
|
|
|
2705
|
|
|
2706 static void *
|
|
|
2707 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2708 {
|
|
185
|
2709 struct read_list_state *s = (struct read_list_state *) state;
|
|
0
|
2710 Lisp_Object elt;
|
|
|
2711
|
|
|
2712 elt = read1 (readcharfun);
|
|
|
2713
|
|
|
2714 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2715 {
|
|
|
2716 Lisp_Object tem = elt;
|
|
|
2717 Emchar ch;
|
|
173
|
2718
|
|
0
|
2719 elt = XCDR (elt);
|
|
|
2720 free_cons (XCONS (tem));
|
|
|
2721 tem = Qnil;
|
|
|
2722 ch = XCHAR (elt);
|
|
140
|
2723 #ifdef FEATUREP_SYNTAX
|
|
|
2724 if (ch == s->terminator) /* deal with #+, #- reader macros */
|
|
|
2725 {
|
|
|
2726 unreadchar (readcharfun, s->terminator);
|
|
|
2727 goto done;
|
|
|
2728 }
|
|
|
2729 else if (ch == ']')
|
|
|
2730 syntax_error ("']' in a list");
|
|
|
2731 else if (ch == ')')
|
|
|
2732 syntax_error ("')' in a vector");
|
|
|
2733 else
|
|
|
2734 #endif
|
|
0
|
2735 if (ch != '.')
|
|
|
2736 signal_simple_error ("BUG! Internal reader error", elt);
|
|
|
2737 else if (!s->allow_dotted_lists)
|
|
|
2738 syntax_error ("\".\" in a vector");
|
|
|
2739 else
|
|
|
2740 {
|
|
|
2741 if (!NILP (s->tail))
|
|
|
2742 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2743 else
|
|
|
2744 s->head = read0 (readcharfun);
|
|
|
2745 elt = read1 (readcharfun);
|
|
|
2746 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2747 {
|
|
|
2748 ch = XCHAR (XCDR (elt));
|
|
|
2749 free_cons (XCONS (elt));
|
|
|
2750 if (ch == s->terminator)
|
|
|
2751 {
|
|
|
2752 unreadchar (readcharfun, s->terminator);
|
|
|
2753 goto done;
|
|
|
2754 }
|
|
|
2755 }
|
|
|
2756 syntax_error (". in wrong context");
|
|
|
2757 }
|
|
|
2758 }
|
|
|
2759
|
|
|
2760 #if 0 /* FSFmacs defun hack, or something ... */
|
|
|
2761 if (NILP (tail) && defun_hack && EQ (elt, Qdefun) && !read_pure)
|
|
|
2762 {
|
|
|
2763 record_unwind_protect (unreadpure, Qzero);
|
|
|
2764 read_pure = 1;
|
|
|
2765 }
|
|
|
2766 #endif
|
|
|
2767
|
|
|
2768 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2769 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2770 {
|
|
|
2771 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2772 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2773 else
|
|
|
2774 Vcurrent_compiled_function_annotation = elt;
|
|
|
2775 }
|
|
|
2776 #endif
|
|
|
2777
|
|
|
2778 elt = Fcons (elt, Qnil);
|
|
|
2779 if (!NILP (s->tail))
|
|
|
2780 XCDR (s->tail) = elt;
|
|
|
2781 else
|
|
|
2782 s->head = elt;
|
|
|
2783 s->tail = elt;
|
|
|
2784 done:
|
|
|
2785 s->length++;
|
|
173
|
2786 return s;
|
|
0
|
2787 }
|
|
|
2788
|
|
|
2789
|
|
|
2790 #if 0 /* FSFmacs defun hack */
|
|
|
2791 /* -1 for allow_dotted_lists means allow_dotted_lists and check
|
|
|
2792 for starting with defun and make structure pure. */
|
|
|
2793 #endif
|
|
|
2794
|
|
|
2795 static Lisp_Object
|
|
|
2796 read_list (Lisp_Object readcharfun,
|
|
|
2797 Emchar terminator,
|
|
|
2798 int allow_dotted_lists,
|
|
|
2799 int check_for_doc_references)
|
|
|
2800 {
|
|
|
2801 struct read_list_state s;
|
|
|
2802 struct gcpro gcpro1, gcpro2;
|
|
|
2803 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2804 Lisp_Object old_compiled_function_annotation =
|
|
|
2805 Vcurrent_compiled_function_annotation;
|
|
|
2806 #endif
|
|
|
2807
|
|
|
2808 s.head = Qnil;
|
|
|
2809 s.tail = Qnil;
|
|
|
2810 s.length = 0;
|
|
|
2811 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2812 s.terminator = terminator;
|
|
|
2813 GCPRO2 (s.head, s.tail);
|
|
|
2814
|
|
181
|
2815 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
0
|
2816 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2817 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2818 #endif
|
|
|
2819
|
|
|
2820 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2821 {
|
|
|
2822 /* check now for any doc string references and record them
|
|
|
2823 for later. */
|
|
|
2824 Lisp_Object tail;
|
|
|
2825
|
|
|
2826 /* We might be dealing with an imperfect list so don't
|
|
|
2827 use LIST_LOOP */
|
|
|
2828 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2829 {
|
|
|
2830 Lisp_Object holding_cons = Qnil;
|
|
|
2831
|
|
|
2832 {
|
|
|
2833 Lisp_Object elem = XCAR (tail);
|
|
|
2834 /* elem might be (#$ . INT) ... */
|
|
|
2835 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2836 holding_cons = tail;
|
|
|
2837 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2838 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2839 `autoload' (autoload evaluates its arguments, while
|
|
|
2840 `defvar', `defun', etc. don't). */
|
|
|
2841 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2842 && CONSP (XCDR (elem)))
|
|
|
2843 {
|
|
|
2844 elem = XCAR (XCDR (elem));
|
|
|
2845 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2846 holding_cons = XCDR (XCAR (tail));
|
|
|
2847 }
|
|
|
2848 }
|
|
|
2849
|
|
|
2850 if (CONSP (holding_cons))
|
|
|
2851 {
|
|
|
2852 if (purify_flag)
|
|
|
2853 {
|
|
|
2854 if (NILP (Vdoc_file_name))
|
|
|
2855 /* We have not yet called Snarf-documentation, so
|
|
80
|
2856 assume this file is described in the DOC file
|
|
|
2857 and Snarf-documentation will fill in the right
|
|
|
2858 value later. For now, replace the whole list
|
|
|
2859 with 0. */
|
|
0
|
2860 XCAR (holding_cons) = Qzero;
|
|
|
2861 else
|
|
|
2862 /* We have already called Snarf-documentation, so
|
|
|
2863 make a relative file name for this file, so it
|
|
|
2864 can be found properly in the installed Lisp
|
|
|
2865 directory. We don't use Fexpand_file_name
|
|
|
2866 because that would make the directory absolute
|
|
|
2867 now. */
|
|
|
2868 XCAR (XCAR (holding_cons)) =
|
|
|
2869 concat2 (build_string ("../lisp/"),
|
|
|
2870 Ffile_name_nondirectory
|
|
|
2871 (Vload_file_name_internal));
|
|
|
2872 }
|
|
|
2873 else
|
|
|
2874 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2875 and the string will be filled in properly in
|
|
|
2876 load_force_doc_string_unwind(). */
|
|
|
2877 Vload_force_doc_string_list =
|
|
|
2878 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2879 can modify it in-place. */
|
|
|
2880 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2881 }
|
|
|
2882 }
|
|
|
2883 }
|
|
173
|
2884
|
|
0
|
2885 UNGCPRO;
|
|
173
|
2886 return s.head;
|
|
0
|
2887 }
|
|
|
2888
|
|
|
2889 static Lisp_Object
|
|
|
2890 read_vector (Lisp_Object readcharfun,
|
|
|
2891 Emchar terminator)
|
|
|
2892 {
|
|
|
2893 Lisp_Object tem;
|
|
|
2894 Lisp_Object *p;
|
|
|
2895 int len;
|
|
|
2896 int i;
|
|
|
2897 struct read_list_state s;
|
|
|
2898 struct gcpro gcpro1, gcpro2;
|
|
|
2899
|
|
|
2900 s.head = Qnil;
|
|
|
2901 s.tail = Qnil;
|
|
|
2902 s.length = 0;
|
|
|
2903 s.allow_dotted_lists = 0;
|
|
|
2904 GCPRO2 (s.head, s.tail);
|
|
173
|
2905
|
|
181
|
2906 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
185
|
2907
|
|
0
|
2908 UNGCPRO;
|
|
|
2909 tem = s.head;
|
|
|
2910 len = XINT (Flength (tem));
|
|
|
2911
|
|
|
2912 #if 0 /* FSFmacs defun hack */
|
|
|
2913 if (read_pure)
|
|
|
2914 s.head = make_pure_vector (len, Qnil);
|
|
|
2915 else
|
|
|
2916 #endif
|
|
|
2917 s.head = make_vector (len, Qnil);
|
|
|
2918
|
|
173
|
2919 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]);
|
|
0
|
2920 i < len;
|
|
|
2921 i++, p++)
|
|
|
2922 {
|
|
|
2923 struct Lisp_Cons *otem = XCONS (tem);
|
|
|
2924 #if 0 /* FSFmacs defun hack */
|
|
|
2925 if (read_pure)
|
|
|
2926 tem = Fpurecopy (Fcar (tem));
|
|
|
2927 else
|
|
|
2928 #endif
|
|
|
2929 tem = Fcar (tem);
|
|
|
2930 *p = tem;
|
|
|
2931 tem = otem->cdr;
|
|
|
2932 free_cons (otem);
|
|
|
2933 }
|
|
173
|
2934 return s.head;
|
|
0
|
2935 }
|
|
|
2936
|
|
|
2937 static Lisp_Object
|
|
|
2938 read_compiled_function (Lisp_Object readcharfun, Emchar terminator)
|
|
|
2939 {
|
|
173
|
2940 /* Accept compiled functions at read-time so that we don't
|
|
0
|
2941 have to build them at load-time. */
|
|
|
2942 Lisp_Object stuff;
|
|
|
2943 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
2944 struct gcpro gcpro1;
|
|
|
2945 int len;
|
|
|
2946 int iii;
|
|
|
2947 int saw_a_doc_ref = 0;
|
|
|
2948
|
|
|
2949 /* Note: we tell read_list not to search for doc references
|
|
|
2950 because we need to handle the "doc reference" for the
|
|
|
2951 instructions and constants differently. */
|
|
|
2952 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
2953 len = XINT (Flength (stuff));
|
|
|
2954 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
2955 return
|
|
|
2956 continuable_syntax_error ("#[...] used with wrong number of elements");
|
|
|
2957
|
|
|
2958 for (iii = 0; CONSP (stuff); iii++)
|
|
|
2959 {
|
|
|
2960 struct Lisp_Cons *victim = XCONS (stuff);
|
|
|
2961 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
2962 if ((purify_flag || load_force_doc_strings)
|
|
|
2963 && CONSP (make_byte_code_args[iii])
|
|
|
2964 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
2965 {
|
|
|
2966 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
2967 {
|
|
|
2968 /* same as in read_list(). */
|
|
|
2969 if (NILP (Vdoc_file_name))
|
|
|
2970 make_byte_code_args[iii] = Qzero;
|
|
|
2971 else
|
|
|
2972 XCAR (make_byte_code_args[iii]) =
|
|
|
2973 concat2 (build_string ("../lisp/"),
|
|
|
2974 Ffile_name_nondirectory
|
|
|
2975 (Vload_file_name_internal));
|
|
|
2976 }
|
|
|
2977 else
|
|
|
2978 saw_a_doc_ref = 1;
|
|
|
2979 }
|
|
|
2980 stuff = Fcdr (stuff);
|
|
|
2981 free_cons (victim);
|
|
|
2982 }
|
|
|
2983 GCPRO1 (make_byte_code_args[0]);
|
|
|
2984 gcpro1.nvars = len;
|
|
|
2985
|
|
70
|
2986 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
2987 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2]))
|
|
|
2988 ebolify_bytecode_constants (make_byte_code_args[2]);
|
|
|
2989
|
|
0
|
2990 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
2991 * value as our "read-pure" argument */
|
|
|
2992 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
70
|
2993 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20);
|
|
0
|
2994 if (saw_a_doc_ref)
|
|
|
2995 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
2996 UNGCPRO;
|
|
|
2997 return stuff;
|
|
|
2998 }
|
|
|
2999
|
|
|
3000
|
|
|
3001
|
|
|
3002 void
|
|
|
3003 init_lread (void)
|
|
|
3004 {
|
|
|
3005 #ifdef PATH_LOADSEARCH
|
|
|
3006 CONST char *normal = PATH_LOADSEARCH;
|
|
|
3007
|
|
|
3008 /* Don't print this warning. If the hardcoded paths don't exist, then
|
|
|
3009 startup.el will try and deduce one. If it fails, it knows how to
|
|
|
3010 handle things. */
|
|
|
3011 #if 0
|
|
|
3012 #ifndef WINDOWSNT
|
|
173
|
3013 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
|
|
185
|
3014 almost never correct, thereby causing a warning to be printed out that
|
|
0
|
3015 confuses users. Since PATH_LOADSEARCH is always overriden by the
|
|
|
3016 EMACSLOADPATH environment variable below, disable the warning on NT. */
|
|
|
3017
|
|
|
3018 /* Warn if dirs in the *standard* path don't exist. */
|
|
|
3019 if (!turn_off_warning)
|
|
|
3020 {
|
|
|
3021 Lisp_Object normal_path = decode_env_path (0, normal);
|
|
|
3022 for (; !NILP (normal_path); normal_path = XCDR (normal_path))
|
|
|
3023 {
|
|
|
3024 Lisp_Object dirfile;
|
|
|
3025 dirfile = Fcar (normal_path);
|
|
|
3026 if (!NILP (dirfile))
|
|
|
3027 {
|
|
|
3028 dirfile = Fdirectory_file_name (dirfile);
|
|
16
|
3029 if (access ((char *) XSTRING_DATA (dirfile), 0) < 0)
|
|
0
|
3030 stdout_out ("Warning: lisp library (%s) does not exist.\n",
|
|
16
|
3031 XSTRING_DATA (Fcar (normal_path)));
|
|
0
|
3032 }
|
|
|
3033 }
|
|
|
3034 }
|
|
|
3035 #endif /* WINDOWSNT */
|
|
|
3036 #endif /* 0 */
|
|
|
3037 #else /* !PATH_LOADSEARCH */
|
|
|
3038 CONST char *normal = 0;
|
|
|
3039 #endif /* !PATH_LOADSEARCH */
|
|
|
3040 Vvalues = Qnil;
|
|
|
3041
|
|
|
3042 /* further frobbed by startup.el if nil. */
|
|
|
3043 Vload_path = decode_env_path ("EMACSLOADPATH", normal);
|
|
|
3044
|
|
|
3045 /* Vdump_load_path = Qnil; */
|
|
|
3046 if (purify_flag && NILP (Vload_path))
|
|
|
3047 {
|
|
|
3048 /* loadup.el will frob this some more. */
|
|
|
3049 /* #### unix-specific */
|
|
209
|
3050 Vload_path = Fcons (build_string ("../lisp/"), Vload_path);
|
|
0
|
3051 }
|
|
|
3052 load_in_progress = 0;
|
|
|
3053
|
|
|
3054 Vload_descriptor_list = Qnil;
|
|
|
3055
|
|
231
|
3056 /* This used to get initialized in init_lread because all streams
|
|
|
3057 got closed when dumping occurs. This is no longer true --
|
|
|
3058 Vread_buffer_stream is a resizing output stream, and there is no
|
|
|
3059 reason to close it at dump-time.
|
|
|
3060
|
|
|
3061 Vread_buffer_stream is set to Qnil in vars_of_lread, and this
|
|
|
3062 will initialize it only once, at dump-time. */
|
|
|
3063 if (NILP (Vread_buffer_stream))
|
|
|
3064 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
0
|
3065
|
|
|
3066 Vload_force_doc_string_list = Qnil;
|
|
|
3067 }
|
|
|
3068
|
|
|
3069 void
|
|
|
3070 syms_of_lread (void)
|
|
|
3071 {
|
|
20
|
3072 DEFSUBR (Fread);
|
|
|
3073 DEFSUBR (Fread_from_string);
|
|
|
3074 DEFSUBR (Fload_internal);
|
|
|
3075 DEFSUBR (Flocate_file);
|
|
|
3076 DEFSUBR (Flocate_file_clear_hashing);
|
|
|
3077 DEFSUBR (Feval_buffer);
|
|
|
3078 DEFSUBR (Feval_region);
|
|
0
|
3079 #ifdef standalone
|
|
20
|
3080 DEFSUBR (Fread_char);
|
|
0
|
3081 #endif
|
|
|
3082
|
|
|
3083 defsymbol (&Qstandard_input, "standard-input");
|
|
|
3084 defsymbol (&Qread_char, "read-char");
|
|
|
3085 defsymbol (&Qcurrent_load_list, "current-load-list");
|
|
|
3086 defsymbol (&Qload, "load");
|
|
|
3087 defsymbol (&Qload_file_name, "load-file-name");
|
|
|
3088 defsymbol (&Qlocate_file_hash_table, "locate-file-hash-table");
|
|
|
3089 defsymbol (&Qfset, "fset");
|
|
|
3090
|
|
|
3091 #ifdef LISP_BACKQUOTES
|
|
|
3092 defsymbol (&Qbackquote, "backquote");
|
|
|
3093 defsymbol (&Qbacktick, "`");
|
|
|
3094 defsymbol (&Qcomma, ",");
|
|
|
3095 defsymbol (&Qcomma_at, ",@");
|
|
|
3096 defsymbol (&Qcomma_dot, ",.");
|
|
|
3097 #endif
|
|
|
3098 }
|
|
|
3099
|
|
|
3100 void
|
|
|
3101 structure_type_create (void)
|
|
|
3102 {
|
|
185
|
3103 the_structure_type_dynarr = Dynarr_new (structure_type);
|
|
0
|
3104 }
|
|
|
3105
|
|
|
3106 void
|
|
|
3107 vars_of_lread (void)
|
|
|
3108 {
|
|
|
3109 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
3110 List of values of all expressions which were read, evaluated and printed.
|
|
|
3111 Order is reverse chronological.
|
|
|
3112 */ );
|
|
|
3113
|
|
|
3114 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
3115 Stream for read to get input from.
|
|
|
3116 See documentation of `read' for possible values.
|
|
|
3117 */ );
|
|
|
3118 Vstandard_input = Qt;
|
|
|
3119
|
|
|
3120 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
3121 *List of directories to search for files to load.
|
|
|
3122 Each element is a string (directory name) or nil (try default directory).
|
|
|
3123
|
|
185
|
3124 Note that the elements of this list *may not* begin with "~", so you must
|
|
0
|
3125 call `expand-file-name' on them before adding them to this list.
|
|
|
3126
|
|
|
3127 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
3128 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
3129 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
3130 value for this variable by looking around in the file-system near the
|
|
|
3131 directory in which the XEmacs executable resides.
|
|
|
3132 */ );
|
|
|
3133
|
|
|
3134 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
3135 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
3136
|
|
|
3137 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
3138 Non-nil iff inside of `load'.
|
|
|
3139 */ );
|
|
|
3140
|
|
|
3141 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
3142 An alist of expressions to be evalled when particular files are loaded.
|
|
|
3143 Each element looks like (FILENAME FORMS...).
|
|
|
3144 When `load' is run and the file-name argument is FILENAME,
|
|
|
3145 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
3146
|
|
|
3147 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
3148 with no directory specified, since that is how `load' is normally called.
|
|
|
3149 An error in FORMS does not undo the load,
|
|
|
3150 but does prevent execution of the rest of the FORMS.
|
|
|
3151 */ );
|
|
|
3152 Vafter_load_alist = Qnil;
|
|
|
3153
|
|
|
3154 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
3155 *Whether `load' should check whether the source is newer than the binary.
|
|
|
3156 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
3157 corresponding `.el' is newer, a warning message will be printed.
|
|
|
3158 */ );
|
|
|
3159 load_warn_when_source_newer = 0;
|
|
|
3160
|
|
|
3161 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
3162 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
3163 If this variable is true, then when `load' is called with a filename without
|
|
|
3164 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
3165 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
3166 no warning will be printed.
|
|
|
3167 */ );
|
|
|
3168 load_warn_when_source_only = 0;
|
|
|
3169
|
|
|
3170 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
3171 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
3172 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
3173 */ );
|
|
|
3174 load_ignore_elc_files = 0;
|
|
|
3175
|
|
|
3176 #ifdef LOADHIST
|
|
|
3177 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
3178 Alist mapping source file names to symbols and features.
|
|
|
3179 Each alist element is a list that starts with a file name,
|
|
|
3180 except for one element (optional) that starts with nil and describes
|
|
|
3181 definitions evaluated from buffers not visiting files.
|
|
|
3182 The remaining elements of each list are symbols defined as functions
|
|
|
3183 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
3184 */ );
|
|
|
3185 Vload_history = Qnil;
|
|
|
3186
|
|
|
3187 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
3188 Used for internal purposes by `load'.
|
|
|
3189 */ );
|
|
|
3190 Vcurrent_load_list = Qnil;
|
|
|
3191 #endif
|
|
|
3192
|
|
|
3193 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
3194 Full name of file being loaded by `load'.
|
|
|
3195 */ );
|
|
|
3196 Vload_file_name = Qnil;
|
|
|
3197
|
|
|
3198 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
3199 "Function used by `load' and `eval-region' for reading expressions.
|
|
|
3200 The default is nil, which means use the function `read'.
|
|
|
3201 */ );
|
|
|
3202 Vload_read_function = Qnil;
|
|
|
3203
|
|
|
3204 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
3205 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
3206 This is useful when the file being loaded is a temporary copy.
|
|
|
3207 */ );
|
|
|
3208 load_force_doc_strings = 0;
|
|
|
3209
|
|
|
3210 DEFVAR_LISP ("source-directory", &Vsource_directory /*
|
|
|
3211 Directory in which XEmacs sources were found when XEmacs was built.
|
|
|
3212 You cannot count on them to still be there!
|
|
|
3213 */ );
|
|
|
3214 Vsource_directory = Qnil;
|
|
|
3215
|
|
|
3216 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes", &puke_on_fsf_keys /*
|
|
|
3217 Whether `read' should signal an error when it encounters unsupported
|
|
|
3218 character escape syntaxes or just read them incorrectly.
|
|
|
3219 */ );
|
|
|
3220 puke_on_fsf_keys = 0;
|
|
|
3221
|
|
|
3222 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3223 with values saved when the image is dumped. */
|
|
|
3224 staticpro (&Vload_descriptor_list);
|
|
|
3225
|
|
231
|
3226 Vread_buffer_stream = Qnil;
|
|
0
|
3227 staticpro (&Vread_buffer_stream);
|
|
|
3228
|
|
|
3229 /* Initialized in init_lread. */
|
|
|
3230 staticpro (&Vload_force_doc_string_list);
|
|
|
3231
|
|
|
3232 Vload_file_name_internal = Qnil;
|
|
|
3233 staticpro (&Vload_file_name_internal);
|
|
|
3234
|
|
|
3235 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3236 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3237
|
|
|
3238 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3239 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3240 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3241 #endif
|
|
|
3242
|
|
|
3243 /* So that early-early stuff will work */
|
|
|
3244 Ffset (Qload, intern ("load-internal"));
|
|
|
3245
|
|
140
|
3246 #ifdef FEATUREP_SYNTAX
|
|
207
|
3247 defsymbol (&Qfeaturep, "featurep");
|
|
140
|
3248 Fprovide(intern("xemacs"));
|
|
155
|
3249 #ifdef INFODOCK
|
|
|
3250 Fprovide(intern("infodock"));
|
|
231
|
3251 #endif /* INFODOCK */
|
|
|
3252 #endif /* FEATUREP_SYNTAX */
|
|
140
|
3253
|
|
0
|
3254 #ifdef LISP_BACKQUOTES
|
|
|
3255 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3256 #endif
|
|
185
|
3257
|
|
0
|
3258 #ifdef I18N3
|
|
|
3259 Vfile_domain = Qnil;
|
|
|
3260 #endif
|
|
245
|
3261
|
|
|
3262 read_objects = Qnil;
|
|
|
3263 staticpro (&read_objects);
|
|
0
|
3264 }
|
