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