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428
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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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32 #include "elhash.h"
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33 #include "lstream.h"
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34 #include "opaque.h"
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35 #ifdef FILE_CODING
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36 #include "file-coding.h"
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37 #endif
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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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50 /*
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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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56 XEmacs:
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57 Nested backquotes are perfectly legal and fail utterly with
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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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61 #endif
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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 Qfset;
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67
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68 /* Hash-table that maps directory names to hashes of their contents. */
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69 static Lisp_Object Vlocate_file_hash_table;
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70
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71 Lisp_Object Qexists, Qreadable, Qwritable, Qexecutable;
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72
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73 /* See read_escape() for an explanation of this. */
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74 #if 0
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75 int fail_on_bucky_bit_character_escapes;
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76 #endif
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77
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78 /* This symbol is also used in fns.c */
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79 #define FEATUREP_SYNTAX
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80
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81 #ifdef FEATUREP_SYNTAX
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82 Lisp_Object Qfeaturep;
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83 #endif
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84
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85 /* non-zero if inside `load' */
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86 int load_in_progress;
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87
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88 /* Whether Fload_internal() should check whether the .el is newer
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89 when loading .elc */
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90 int load_warn_when_source_newer;
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91 /* Whether Fload_internal() should check whether the .elc doesn't exist */
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92 int load_warn_when_source_only;
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93 /* Whether Fload_internal() should ignore .elc files when no suffix is given */
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94 int load_ignore_elc_files;
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95
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96 /* Search path for files to be loaded. */
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97 Lisp_Object Vload_path;
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98
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99 /* Search path for files when dumping. */
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100 /* Lisp_Object Vdump_load_path; */
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101
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102 /* This is the user-visible association list that maps features to
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103 lists of defs in their load files. */
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104 Lisp_Object Vload_history;
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105
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106 /* This is used to build the load history. */
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107 Lisp_Object Vcurrent_load_list;
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108
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109 /* Name of file actually being read by `load'. */
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110 Lisp_Object Vload_file_name;
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111
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112 /* Same as Vload_file_name but not Lisp-accessible. This ensures that
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113 our #$ checks are reliable. */
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114 Lisp_Object Vload_file_name_internal;
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115
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116 Lisp_Object Vload_file_name_internal_the_purecopy;
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117
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118 /* Function to use for reading, in `load' and friends. */
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119 Lisp_Object Vload_read_function;
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120
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121 /* The association list of objects read with the #n=object form.
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122 Each member of the list has the form (n . object), and is used to
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123 look up the object for the corresponding #n# construct.
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124 It must be set to nil before all top-level calls to read0. */
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125 Lisp_Object Vread_objects;
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126
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127 /* Nonzero means load should forcibly load all dynamic doc strings. */
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128 /* Note that this always happens (with some special behavior) when
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129 purify_flag is set. */
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130 static int load_force_doc_strings;
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131
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132 /* List of descriptors now open for Fload_internal. */
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133 static Lisp_Object Vload_descriptor_list;
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134
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135 /* In order to implement "load_force_doc_strings", we keep
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136 a list of all the compiled-function objects and such
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137 that we have created in the process of loading this file.
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138 See the rant below.
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139
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140 We specbind this just like Vload_file_name, so there's no
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141 problems with recursive loading. */
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142 static Lisp_Object Vload_force_doc_string_list;
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143
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144 /* A resizing-buffer stream used to temporarily hold data while reading */
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145 static Lisp_Object Vread_buffer_stream;
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146
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147 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
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148 Lisp_Object Vcurrent_compiled_function_annotation;
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149 #endif
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150
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151 static int load_byte_code_version;
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152
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153 /* An array describing all known built-in structure types */
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154 static structure_type_dynarr *the_structure_type_dynarr;
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155
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156 #if 0 /* FSF defun hack */
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157 /* When nonzero, read conses in pure space */
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158 static int read_pure;
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159 #endif
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160
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161 #if 0 /* FSF stuff */
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162 /* For use within read-from-string (this reader is non-reentrant!!) */
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163 static int read_from_string_index;
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164 static int read_from_string_limit;
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165 #endif
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166
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167 #if 0 /* More FSF implementation kludges. */
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168 /* In order to implement load-force-doc-string, FSF saves the
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169 #@-quoted string when it's seen, and goes back and retrieves
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170 it later.
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171
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172 This approach is not only kludgy, but it in general won't work
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173 correctly because there's no stack of remembered #@-quoted-strings
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174 and those strings don't generally appear in the file in the same
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175 order as their #$ references. (Yes, that is amazingly stupid too.
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176
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177 It would be trivially easy to always encode the #@ string
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178 [which is a comment, anyway] in the middle of the (#$ . INT) cons
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179 reference. That way, it would be really easy to implement
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180 load-force-doc-string in a non-kludgy way by just retrieving the
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181 string immediately, because it's delivered on a silver platter.)
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182
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183 And finally, this stupid approach doesn't work under Mule, or
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184 under MS-DOS or Windows NT, or under VMS, or any other place
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185 where you either can't do an ftell() or don't get back a byte
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186 count.
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187
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188 Oh, and one more lossage in this approach: If you attempt to
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189 dump any ELC files that were compiled with `byte-compile-dynamic'
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190 (as opposed to just `byte-compile-dynamic-docstring'), you
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191 get hosed. FMH! (as the illustrious JWZ was prone to utter)
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192
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193 The approach we use is clean, solves all of these problems, and is
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194 probably easier to implement anyway. We just save a list of all
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195 the containing objects that have (#$ . INT) conses in them (this
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196 will only be compiled-function objects and lists), and when the
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197 file is finished loading, we go through and fill in all the
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198 doc strings at once. */
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199
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200 /* This contains the last string skipped with #@. */
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201 static char *saved_doc_string;
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202 /* Length of buffer allocated in saved_doc_string. */
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203 static int saved_doc_string_size;
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204 /* Length of actual data in saved_doc_string. */
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205 static int saved_doc_string_length;
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206 /* This is the file position that string came from. */
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207 static int saved_doc_string_position;
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208 #endif
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209
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210 EXFUN (Fread_from_string, 3);
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211
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212 /* When errors are signaled, the actual readcharfun should not be used
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213 as an argument if it is an lstream, so that lstreams don't escape
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214 to the Lisp level. */
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215 #define READCHARFUN_MAYBE(x) (LSTREAMP (x) \
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216 ? (build_string ("internal input stream")) \
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217 : (x))
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218
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219
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220 static DOESNT_RETURN
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442
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221 read_syntax_error (const char *string)
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428
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222 {
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223 signal_error (Qinvalid_read_syntax,
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224 list1 (build_translated_string (string)));
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225 }
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226
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227 static Lisp_Object
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442
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228 continuable_read_syntax_error (const char *string)
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428
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229 {
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230 return Fsignal (Qinvalid_read_syntax,
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231 list1 (build_translated_string (string)));
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232 }
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233
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234
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235 /* Handle unreading and rereading of characters. */
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236 static Emchar
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237 readchar (Lisp_Object readcharfun)
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238 {
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239 /* This function can GC */
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240
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241 if (BUFFERP (readcharfun))
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242 {
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243 Emchar c;
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244 struct buffer *b = XBUFFER (readcharfun);
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245
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246 if (!BUFFER_LIVE_P (b))
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247 error ("Reading from killed buffer");
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248
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249 if (BUF_PT (b) >= BUF_ZV (b))
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250 return -1;
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251 c = BUF_FETCH_CHAR (b, BUF_PT (b));
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252 BUF_SET_PT (b, BUF_PT (b) + 1);
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253
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254 return c;
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255 }
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256 else if (LSTREAMP (readcharfun))
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257 {
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258 Emchar c = Lstream_get_emchar (XLSTREAM (readcharfun));
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259 #ifdef DEBUG_XEMACS /* testing Mule */
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260 static int testing_mule = 0; /* Change via debugger */
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444
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261 if (testing_mule)
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262 {
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263 if (c >= 0x20 && c <= 0x7E) stderr_out ("%c", c);
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264 else if (c == '\n') stderr_out ("\\n\n");
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265 else stderr_out ("\\%o ", c);
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266 }
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267 #endif /* testing Mule */
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428
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268 return c;
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269 }
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270 else if (MARKERP (readcharfun))
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271 {
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272 Emchar c;
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273 Bufpos mpos = marker_position (readcharfun);
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274 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
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275
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276 if (mpos >= BUF_ZV (inbuffer))
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277 return -1;
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278 c = BUF_FETCH_CHAR (inbuffer, mpos);
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279 set_marker_position (readcharfun, mpos + 1);
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280 return c;
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281 }
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282 else
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283 {
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284 Lisp_Object tem = call0 (readcharfun);
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285
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286 if (!CHAR_OR_CHAR_INTP (tem))
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287 return -1;
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288 return XCHAR_OR_CHAR_INT (tem);
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289 }
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290 }
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291
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292 /* Unread the character C in the way appropriate for the stream READCHARFUN.
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293 If the stream is a user function, call it with the char as argument. */
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294
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295 static void
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296 unreadchar (Lisp_Object readcharfun, Emchar c)
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297 {
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298 if (c == -1)
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299 /* Don't back up the pointer if we're unreading the end-of-input mark,
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300 since readchar didn't advance it when we read it. */
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301 ;
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302 else if (BUFFERP (readcharfun))
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303 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
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304 else if (LSTREAMP (readcharfun))
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305 {
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306 Lstream_unget_emchar (XLSTREAM (readcharfun), c);
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307 #ifdef DEBUG_XEMACS /* testing Mule */
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308 {
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309 static int testing_mule = 0; /* Set this using debugger */
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310 if (testing_mule)
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311 fprintf (stderr,
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312 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
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313 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
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314 }
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315 #endif
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316 }
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317 else if (MARKERP (readcharfun))
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318 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
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319 else
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320 call1 (readcharfun, make_char (c));
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321 }
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322
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323 static Lisp_Object read0 (Lisp_Object readcharfun);
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324 static Lisp_Object read1 (Lisp_Object readcharfun);
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325 /* allow_dotted_lists means that something like (foo bar . baz)
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326 is acceptable. If -1, means check for starting with defun
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327 and make structure pure. (not implemented, probably for very
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328 good reasons)
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329 */
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330 /*
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331 If check_for_doc_references, look for (#$ . INT) doc references
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332 in the list and record if load_force_doc_strings is non-zero.
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333 (Such doc references will be destroyed during the loadup phase
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334 by replacing with Qzero, because Snarf-documentation will fill
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335 them in again.)
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336
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337 WARNING: If you set this, you sure as hell better not call
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338 free_list() on the returned list here. */
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339
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340 static Lisp_Object read_list (Lisp_Object readcharfun,
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341 Emchar terminator,
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342 int allow_dotted_lists,
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343 int check_for_doc_references);
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344
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345 static void readevalloop (Lisp_Object readcharfun,
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346 Lisp_Object sourcefile,
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347 Lisp_Object (*evalfun) (Lisp_Object),
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348 int printflag);
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349
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350 static Lisp_Object
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351 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
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352 {
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353 Lstream_close (XLSTREAM (stream));
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354 if (--load_in_progress < 0)
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355 load_in_progress = 0;
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356 return Qnil;
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357 }
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358
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359 static Lisp_Object
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360 load_descriptor_unwind (Lisp_Object oldlist)
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361 {
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362 Vload_descriptor_list = oldlist;
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363 return Qnil;
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364 }
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365
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366 static Lisp_Object
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367 load_file_name_internal_unwind (Lisp_Object oldval)
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368 {
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369 Vload_file_name_internal = oldval;
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370 return Qnil;
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371 }
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372
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373 static Lisp_Object
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374 load_file_name_internal_the_purecopy_unwind (Lisp_Object oldval)
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375 {
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376 Vload_file_name_internal_the_purecopy = oldval;
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377 return Qnil;
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378 }
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379
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380 static Lisp_Object
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381 load_byte_code_version_unwind (Lisp_Object oldval)
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382 {
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383 load_byte_code_version = XINT (oldval);
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384 return Qnil;
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385 }
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386
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387 /* The plague is coming.
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388
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389 Ring around the rosy, pocket full of posy,
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390 Ashes ashes, they all fall down.
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391 */
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392 void
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393 ebolify_bytecode_constants (Lisp_Object vector)
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394 {
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395 int len = XVECTOR_LENGTH (vector);
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396 int i;
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397
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398 for (i = 0; i < len; i++)
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399 {
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400 Lisp_Object el = XVECTOR_DATA (vector)[i];
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401
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402 /* We don't check for `eq', `equal', and the others that have
|
|
|
403 bytecode opcodes. This might lose if someone passes #'eq or
|
|
|
404 something to `funcall', but who would really do that? As
|
|
|
405 they say in law, we've made a "good-faith effort" to
|
|
|
406 unfuckify ourselves. And doing it this way avoids screwing
|
|
|
407 up args to `make-hash-table' and such. As it is, we have to
|
|
|
408 add an extra Ebola check in decode_weak_list_type(). --ben */
|
|
|
409 if (EQ (el, Qassoc)) el = Qold_assoc;
|
|
|
410 else if (EQ (el, Qdelq)) el = Qold_delq;
|
|
|
411 #if 0
|
|
|
412 /* I think this is a bad idea because it will probably mess
|
|
|
413 with keymap code. */
|
|
|
414 else if (EQ (el, Qdelete)) el = Qold_delete;
|
|
|
415 #endif
|
|
|
416 else if (EQ (el, Qrassq)) el = Qold_rassq;
|
|
|
417 else if (EQ (el, Qrassoc)) el = Qold_rassoc;
|
|
|
418
|
|
|
419 XVECTOR_DATA (vector)[i] = el;
|
|
|
420 }
|
|
|
421 }
|
|
|
422
|
|
|
423 static Lisp_Object
|
|
|
424 pas_de_lache_ici (int fd, Lisp_Object victim)
|
|
|
425 {
|
|
|
426 Lisp_Object tem;
|
|
|
427 EMACS_INT pos;
|
|
|
428
|
|
|
429 if (!INTP (XCDR (victim)))
|
|
|
430 signal_simple_error ("Bogus doc string reference", victim);
|
|
|
431 pos = XINT (XCDR (victim));
|
|
|
432 if (pos < 0)
|
|
|
433 pos = -pos; /* kludge to mark a user variable */
|
|
|
434 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal);
|
|
|
435 if (!STRINGP (tem))
|
|
|
436 signal_error (Qerror, tem);
|
|
|
437 return tem;
|
|
|
438 }
|
|
|
439
|
|
|
440 static Lisp_Object
|
|
|
441 load_force_doc_string_unwind (Lisp_Object oldlist)
|
|
|
442 {
|
|
|
443 struct gcpro gcpro1;
|
|
|
444 Lisp_Object list = Vload_force_doc_string_list;
|
|
|
445 Lisp_Object tail;
|
|
|
446 int fd = XINT (XCAR (Vload_descriptor_list));
|
|
|
447
|
|
|
448 GCPRO1 (list);
|
|
|
449 /* restore the old value first just in case an error occurs. */
|
|
|
450 Vload_force_doc_string_list = oldlist;
|
|
|
451
|
|
|
452 LIST_LOOP (tail, list)
|
|
|
453 {
|
|
|
454 Lisp_Object john = Fcar (tail);
|
|
|
455 if (CONSP (john))
|
|
|
456 {
|
|
|
457 assert (CONSP (XCAR (john)));
|
|
|
458 assert (!purify_flag); /* should have been handled in read_list() */
|
|
|
459 XCAR (john) = pas_de_lache_ici (fd, XCAR (john));
|
|
|
460 }
|
|
|
461 else
|
|
|
462 {
|
|
|
463 Lisp_Object doc;
|
|
|
464
|
|
|
465 assert (COMPILED_FUNCTIONP (john));
|
|
|
466 if (CONSP (XCOMPILED_FUNCTION (john)->instructions))
|
|
|
467 {
|
|
|
468 struct gcpro ngcpro1;
|
|
|
469 Lisp_Object juan = (pas_de_lache_ici
|
|
|
470 (fd, XCOMPILED_FUNCTION (john)->instructions));
|
|
|
471 Lisp_Object ivan;
|
|
|
472
|
|
|
473 NGCPRO1 (juan);
|
|
|
474 ivan = Fread (juan);
|
|
|
475 if (!CONSP (ivan))
|
|
|
476 signal_simple_error ("invalid lazy-loaded byte code", ivan);
|
|
|
477 XCOMPILED_FUNCTION (john)->instructions = XCAR (ivan);
|
|
|
478 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
479 if (XCOMPILED_FUNCTION (john)->flags.ebolified
|
|
|
480 && VECTORP (XCDR (ivan)))
|
|
|
481 ebolify_bytecode_constants (XCDR (ivan));
|
|
|
482 XCOMPILED_FUNCTION (john)->constants = XCDR (ivan);
|
|
|
483 NUNGCPRO;
|
|
|
484 }
|
|
|
485 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
486 if (CONSP (doc))
|
|
|
487 {
|
|
|
488 assert (!purify_flag); /* should have been handled in
|
|
|
489 read_compiled_function() */
|
|
|
490 doc = pas_de_lache_ici (fd, doc);
|
|
|
491 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
492 doc);
|
|
|
493 }
|
|
|
494 }
|
|
|
495 }
|
|
|
496
|
|
|
497 if (!NILP (list))
|
|
|
498 free_list (list);
|
|
|
499
|
|
|
500 UNGCPRO;
|
|
|
501 return Qnil;
|
|
|
502 }
|
|
|
503
|
|
|
504 /* Close all descriptors in use for Fload_internal.
|
|
|
505 This is used when starting a subprocess. */
|
|
|
506
|
|
|
507 void
|
|
|
508 close_load_descs (void)
|
|
|
509 {
|
|
|
510 Lisp_Object tail;
|
|
|
511 LIST_LOOP (tail, Vload_descriptor_list)
|
|
|
512 close (XINT (XCAR (tail)));
|
|
|
513 }
|
|
|
514
|
|
|
515 #ifdef I18N3
|
|
|
516 Lisp_Object Vfile_domain;
|
|
|
517
|
|
|
518 Lisp_Object
|
|
|
519 restore_file_domain (Lisp_Object val)
|
|
|
520 {
|
|
|
521 Vfile_domain = val;
|
|
|
522 return Qnil;
|
|
|
523 }
|
|
|
524 #endif /* I18N3 */
|
|
|
525
|
|
|
526 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /*
|
|
|
527 Execute a file of Lisp code named FILE; no coding-system frobbing.
|
|
|
528 This function is identical to `load' except for the handling of the
|
|
|
529 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule
|
|
|
530 support is not present, both functions are identical and ignore the
|
|
|
531 CODESYS and USED-CODESYS arguments.)
|
|
|
532
|
|
|
533 If support for Mule exists in this Emacs, the file is decoded
|
|
|
534 according to CODESYS; if omitted, no conversion happens. If
|
|
|
535 USED-CODESYS is non-nil, it should be a symbol, and the actual coding
|
|
|
536 system that was used for the decoding is stored into it. It will in
|
|
|
537 general be different from CODESYS if CODESYS specifies automatic
|
|
|
538 encoding detection or end-of-line detection.
|
|
|
539 */
|
|
444
|
540 (file, noerror, nomessage, nosuffix, codesys, used_codesys))
|
|
428
|
541 {
|
|
|
542 /* This function can GC */
|
|
|
543 int fd = -1;
|
|
|
544 int speccount = specpdl_depth ();
|
|
|
545 int source_only = 0;
|
|
|
546 Lisp_Object newer = Qnil;
|
|
|
547 Lisp_Object handler = Qnil;
|
|
|
548 Lisp_Object found = Qnil;
|
|
|
549 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
550 int reading_elc = 0;
|
|
|
551 int message_p = NILP (nomessage);
|
|
|
552 /*#ifdef DEBUG_XEMACS*/
|
|
|
553 static Lisp_Object last_file_loaded;
|
|
|
554 /*#endif*/
|
|
|
555 struct stat s1, s2;
|
|
|
556 GCPRO3 (file, newer, found);
|
|
|
557
|
|
|
558 CHECK_STRING (file);
|
|
|
559
|
|
|
560 /*#ifdef DEBUG_XEMACS*/
|
|
|
561 if (purify_flag && noninteractive)
|
|
|
562 {
|
|
|
563 message_p = 1;
|
|
|
564 last_file_loaded = file;
|
|
|
565 }
|
|
|
566 /*#endif / * DEBUG_XEMACS */
|
|
|
567
|
|
|
568 /* If file name is magic, call the handler. */
|
|
|
569 handler = Ffind_file_name_handler (file, Qload);
|
|
|
570 if (!NILP (handler))
|
|
444
|
571 RETURN_UNGCPRO (call5 (handler, Qload, file, noerror,
|
|
428
|
572 nomessage, nosuffix));
|
|
|
573
|
|
|
574 /* Do this after the handler to avoid
|
|
|
575 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
576 (Below here, we care only whether they are nil or not.) */
|
|
|
577 file = Fsubstitute_in_file_name (file);
|
|
|
578 #ifdef FILE_CODING
|
|
|
579 if (!NILP (used_codesys))
|
|
|
580 CHECK_SYMBOL (used_codesys);
|
|
|
581 #endif
|
|
|
582
|
|
|
583 /* Avoid weird lossage with null string as arg,
|
|
|
584 since it would try to load a directory as a Lisp file.
|
|
|
585 Unix truly sucks. */
|
|
|
586 if (XSTRING_LENGTH (file) > 0)
|
|
|
587 {
|
|
|
588 char *foundstr;
|
|
|
589 int foundlen;
|
|
|
590
|
|
|
591 fd = locate_file (Vload_path, file,
|
|
|
592 ((!NILP (nosuffix)) ? Qnil :
|
|
|
593 build_string (load_ignore_elc_files ? ".el:" :
|
|
|
594 ".elc:.el:")),
|
|
|
595 &found,
|
|
|
596 -1);
|
|
|
597
|
|
|
598 if (fd < 0)
|
|
|
599 {
|
|
444
|
600 if (NILP (noerror))
|
|
428
|
601 signal_file_error ("Cannot open load file", file);
|
|
|
602 else
|
|
|
603 {
|
|
|
604 UNGCPRO;
|
|
|
605 return Qnil;
|
|
|
606 }
|
|
|
607 }
|
|
|
608
|
|
|
609 foundstr = (char *) alloca (XSTRING_LENGTH (found) + 1);
|
|
|
610 strcpy (foundstr, (char *) XSTRING_DATA (found));
|
|
|
611 foundlen = strlen (foundstr);
|
|
|
612
|
|
|
613 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
614 differ. --ben */
|
|
|
615 if (load_ignore_elc_files)
|
|
|
616 {
|
|
|
617 newer = Ffile_name_nondirectory (found);
|
|
|
618 }
|
|
|
619 else if (load_warn_when_source_newer &&
|
|
|
620 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
621 {
|
|
|
622 if (! fstat (fd, &s1)) /* can't fail, right? */
|
|
|
623 {
|
|
|
624 int result;
|
|
|
625 /* temporarily hack the 'c' off the end of the filename */
|
|
|
626 foundstr[foundlen - 1] = '\0';
|
|
442
|
627 result = xemacs_stat (foundstr, &s2);
|
|
428
|
628 if (result >= 0 &&
|
|
|
629 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
|
630 {
|
|
|
631 Lisp_Object newer_name = make_string ((Bufbyte *) foundstr,
|
|
|
632 foundlen - 1);
|
|
|
633 struct gcpro nngcpro1;
|
|
|
634 NNGCPRO1 (newer_name);
|
|
|
635 newer = Ffile_name_nondirectory (newer_name);
|
|
|
636 NNUNGCPRO;
|
|
|
637 }
|
|
|
638 /* put the 'c' back on (kludge-o-rama) */
|
|
|
639 foundstr[foundlen - 1] = 'c';
|
|
|
640 }
|
|
|
641 }
|
|
|
642 else if (load_warn_when_source_only &&
|
|
|
643 /* `found' ends in ".el" */
|
|
|
644 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
645 /* `file' does not end in ".el" */
|
|
|
646 memcmp (".el",
|
|
|
647 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
|
648 3))
|
|
|
649 {
|
|
|
650 source_only = 1;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
654 reading_elc = 1;
|
|
|
655 }
|
|
|
656
|
|
|
657 #define PRINT_LOADING_MESSAGE(done) do { \
|
|
|
658 if (load_ignore_elc_files) \
|
|
|
659 { \
|
|
|
660 if (message_p) \
|
|
|
661 message ("Loading %s..." done, XSTRING_DATA (newer)); \
|
|
|
662 } \
|
|
|
663 else if (!NILP (newer)) \
|
|
|
664 message ("Loading %s..." done " (file %s is newer)", \
|
|
|
665 XSTRING_DATA (file), \
|
|
|
666 XSTRING_DATA (newer)); \
|
|
|
667 else if (source_only) \
|
|
|
668 message ("Loading %s..." done " (file %s.elc does not exist)", \
|
|
|
669 XSTRING_DATA (file), \
|
|
|
670 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
671 else if (message_p) \
|
|
|
672 message ("Loading %s..." done, XSTRING_DATA (file)); \
|
|
|
673 } while (0)
|
|
|
674
|
|
|
675 PRINT_LOADING_MESSAGE ("");
|
|
|
676
|
|
|
677 {
|
|
|
678 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
679 Lisp_Object lispstream = Qnil;
|
|
442
|
680 const int block_size = 8192;
|
|
428
|
681 struct gcpro ngcpro1;
|
|
|
682
|
|
|
683 NGCPRO1 (lispstream);
|
|
|
684 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
685 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
686 files aren't really all that big. */
|
|
|
687 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
688 block_size);
|
|
|
689 #ifdef FILE_CODING
|
|
|
690 lispstream = make_decoding_input_stream
|
|
|
691 (XLSTREAM (lispstream), Fget_coding_system (codesys));
|
|
|
692 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
693 block_size);
|
|
|
694 #endif
|
|
|
695 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
|
696 record_unwind_protect (load_unwind, lispstream);
|
|
|
697 record_unwind_protect (load_descriptor_unwind, Vload_descriptor_list);
|
|
|
698 record_unwind_protect (load_file_name_internal_unwind,
|
|
|
699 Vload_file_name_internal);
|
|
|
700 record_unwind_protect (load_file_name_internal_the_purecopy_unwind,
|
|
|
701 Vload_file_name_internal_the_purecopy);
|
|
|
702 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
703 Vload_force_doc_string_list);
|
|
|
704 Vload_file_name_internal = found;
|
|
|
705 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
706 specbind (Qload_file_name, found);
|
|
|
707 Vload_descriptor_list = Fcons (make_int (fd), Vload_descriptor_list);
|
|
|
708 Vload_force_doc_string_list = Qnil;
|
|
|
709 #ifdef I18N3
|
|
|
710 record_unwind_protect (restore_file_domain, Vfile_domain);
|
|
|
711 Vfile_domain = Qnil; /* set it to nil; a call to #'domain will set it. */
|
|
|
712 #endif
|
|
|
713 load_in_progress++;
|
|
|
714
|
|
|
715 /* Now determine what sort of ELC file we're reading in. */
|
|
|
716 record_unwind_protect (load_byte_code_version_unwind,
|
|
|
717 make_int (load_byte_code_version));
|
|
|
718 if (reading_elc)
|
|
|
719 {
|
|
|
720 char elc_header[8];
|
|
|
721 int num_read;
|
|
|
722
|
|
|
723 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8);
|
|
|
724 if (num_read < 8
|
|
|
725 || strncmp (elc_header, ";ELC", 4))
|
|
|
726 {
|
|
|
727 /* Huh? Probably not a valid ELC file. */
|
|
|
728 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
729 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read);
|
|
|
730 }
|
|
|
731 else
|
|
|
732 load_byte_code_version = elc_header[4];
|
|
|
733 }
|
|
|
734 else
|
|
|
735 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
736
|
|
|
737 readevalloop (lispstream, file, Feval, 0);
|
|
|
738 #ifdef FILE_CODING
|
|
|
739 if (!NILP (used_codesys))
|
|
|
740 Fset (used_codesys,
|
|
|
741 XCODING_SYSTEM_NAME
|
|
|
742 (decoding_stream_coding_system (XLSTREAM (lispstream))));
|
|
|
743 #endif
|
|
|
744 unbind_to (speccount, Qnil);
|
|
|
745
|
|
|
746 NUNGCPRO;
|
|
|
747 }
|
|
|
748
|
|
|
749 {
|
|
|
750 Lisp_Object tem;
|
|
|
751 /* #### Disgusting kludge */
|
|
|
752 /* Run any load-hooks for this file. */
|
|
|
753 /* #### An even more disgusting kludge. There is horrible code */
|
|
|
754 /* that is relying on the fact that dumped lisp files are found */
|
|
|
755 /* via `load-path' search. */
|
|
|
756 Lisp_Object name = file;
|
|
|
757
|
|
|
758 if (!NILP(Ffile_name_absolute_p(file)))
|
|
|
759 {
|
|
|
760 name = Ffile_name_nondirectory(file);
|
|
|
761 }
|
|
|
762
|
|
|
763 {
|
|
|
764 struct gcpro ngcpro1;
|
|
|
765
|
|
|
766 NGCPRO1 (name);
|
|
|
767 tem = Fassoc (name, Vafter_load_alist);
|
|
|
768 NUNGCPRO;
|
|
|
769 }
|
|
|
770 if (!NILP (tem))
|
|
|
771 {
|
|
|
772 struct gcpro ngcpro1;
|
|
|
773
|
|
|
774 NGCPRO1 (tem);
|
|
|
775 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
776 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
777 Feval (tem);
|
|
|
778 NUNGCPRO;
|
|
|
779 }
|
|
|
780 }
|
|
|
781
|
|
|
782 /*#ifdef DEBUG_XEMACS*/
|
|
|
783 if (purify_flag && noninteractive)
|
|
|
784 {
|
|
|
785 if (!EQ (last_file_loaded, file))
|
|
|
786 message ("Loading %s ...done", XSTRING_DATA (file));
|
|
|
787 }
|
|
|
788 /*#endif / * DEBUG_XEMACS */
|
|
|
789
|
|
|
790 if (!noninteractive)
|
|
|
791 PRINT_LOADING_MESSAGE ("done");
|
|
|
792
|
|
|
793 UNGCPRO;
|
|
|
794 return Qt;
|
|
|
795 }
|
|
|
796
|
|
|
797
|
|
|
798 /* ------------------------------- */
|
|
|
799 /* locate_file */
|
|
|
800 /* ------------------------------- */
|
|
|
801
|
|
|
802 static int
|
|
|
803 decode_mode_1 (Lisp_Object mode)
|
|
|
804 {
|
|
|
805 if (EQ (mode, Qexists))
|
|
|
806 return F_OK;
|
|
|
807 else if (EQ (mode, Qexecutable))
|
|
|
808 return X_OK;
|
|
|
809 else if (EQ (mode, Qwritable))
|
|
|
810 return W_OK;
|
|
|
811 else if (EQ (mode, Qreadable))
|
|
|
812 return R_OK;
|
|
|
813 else if (INTP (mode))
|
|
|
814 {
|
|
|
815 check_int_range (XINT (mode), 0, 7);
|
|
|
816 return XINT (mode);
|
|
|
817 }
|
|
|
818 else
|
|
|
819 signal_simple_error ("Invalid value", mode);
|
|
|
820 return 0; /* unreached */
|
|
|
821 }
|
|
|
822
|
|
|
823 static int
|
|
|
824 decode_mode (Lisp_Object mode)
|
|
|
825 {
|
|
|
826 if (NILP (mode))
|
|
|
827 return R_OK;
|
|
|
828 else if (CONSP (mode))
|
|
|
829 {
|
|
|
830 Lisp_Object tail;
|
|
|
831 int mask = 0;
|
|
|
832 EXTERNAL_LIST_LOOP (tail, mode)
|
|
|
833 mask |= decode_mode_1 (XCAR (tail));
|
|
|
834 return mask;
|
|
|
835 }
|
|
|
836 else
|
|
|
837 return decode_mode_1 (mode);
|
|
|
838 }
|
|
|
839
|
|
|
840 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /*
|
|
|
841 Search for FILENAME through PATH-LIST.
|
|
|
842
|
|
|
843 If SUFFIXES is non-nil, it should be a list of suffixes to append to
|
|
|
844 file name when searching.
|
|
|
845
|
|
|
846 If MODE is non-nil, it should be a symbol or a list of symbol representing
|
|
|
847 requirements. Allowed symbols are `exists', `executable', `writable', and
|
|
|
848 `readable'. If MODE is nil, it defaults to `readable'.
|
|
|
849
|
|
|
850 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
851 in order to speed things up. It tries valiantly to not get confused in
|
|
|
852 the face of a changing and unpredictable environment, but can occasionally
|
|
|
853 get tripped up. In this case, you will have to call
|
|
|
854 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
855 for details.
|
|
|
856 */
|
|
|
857 (filename, path_list, suffixes, mode))
|
|
|
858 {
|
|
|
859 /* This function can GC */
|
|
|
860 Lisp_Object tp;
|
|
|
861
|
|
|
862 CHECK_STRING (filename);
|
|
|
863
|
|
|
864 if (LISTP (suffixes))
|
|
|
865 {
|
|
|
866 Lisp_Object tail;
|
|
|
867 EXTERNAL_LIST_LOOP (tail, suffixes)
|
|
|
868 CHECK_STRING (XCAR (tail));
|
|
|
869 }
|
|
|
870 else
|
|
|
871 CHECK_STRING (suffixes);
|
|
|
872
|
|
|
873 locate_file (path_list, filename, suffixes, &tp, decode_mode (mode));
|
|
|
874 return tp;
|
|
|
875 }
|
|
|
876
|
|
|
877 /* Recalculate the hash table for the given string. DIRECTORY should
|
|
|
878 better have been through Fexpand_file_name() by now. */
|
|
|
879
|
|
|
880 static Lisp_Object
|
|
|
881 locate_file_refresh_hashing (Lisp_Object directory)
|
|
|
882 {
|
|
|
883 Lisp_Object hash =
|
|
|
884 make_directory_hash_table ((char *) XSTRING_DATA (directory));
|
|
|
885
|
|
|
886 if (!NILP (hash))
|
|
|
887 Fputhash (directory, hash, Vlocate_file_hash_table);
|
|
|
888 return hash;
|
|
|
889 }
|
|
|
890
|
|
|
891 /* find the hash table for the given directory, recalculating if necessary */
|
|
|
892
|
|
|
893 static Lisp_Object
|
|
|
894 locate_file_find_directory_hash_table (Lisp_Object directory)
|
|
|
895 {
|
|
|
896 Lisp_Object hash = Fgethash (directory, Vlocate_file_hash_table, Qnil);
|
|
|
897 if (NILP (hash))
|
|
|
898 return locate_file_refresh_hashing (directory);
|
|
|
899 else
|
|
|
900 return hash;
|
|
|
901 }
|
|
|
902
|
|
|
903 /* The SUFFIXES argument in any of the locate_file* functions can be
|
|
|
904 nil, a list, or a string (for backward compatibility), with the
|
|
|
905 following semantics:
|
|
|
906
|
|
|
907 a) nil - no suffix, just search for file name intact
|
|
|
908 (semantically different from "empty suffix list", which
|
|
|
909 would be meaningless.)
|
|
|
910 b) list - list of suffixes to append to file name. Each of these
|
|
|
911 must be a string.
|
|
|
912 c) string - colon-separated suffixes to append to file name (backward
|
|
|
913 compatibility).
|
|
|
914
|
|
|
915 All of this got hairy, so I decided to use a mapper. Calling a
|
|
|
916 function for each suffix shouldn't slow things down, since
|
|
|
917 locate_file is rarely called with enough suffixes for funcalls to
|
|
|
918 make any difference. */
|
|
|
919
|
|
|
920 /* Map FUN over SUFFIXES, as described above. FUN will be called with a
|
|
|
921 char * containing the current file name, and ARG. Mapping stops when
|
|
|
922 FUN returns non-zero. */
|
|
|
923 static void
|
|
|
924 locate_file_map_suffixes (Lisp_Object filename, Lisp_Object suffixes,
|
|
|
925 int (*fun) (char *, void *),
|
|
|
926 void *arg)
|
|
|
927 {
|
|
|
928 /* This function can GC */
|
|
|
929 char *fn;
|
|
|
930 int fn_len, max;
|
|
|
931
|
|
|
932 /* Calculate maximum size of any filename made from
|
|
|
933 this path element/specified file name and any possible suffix. */
|
|
|
934 if (CONSP (suffixes))
|
|
|
935 {
|
|
|
936 /* We must traverse the list, so why not do it right. */
|
|
|
937 Lisp_Object tail;
|
|
|
938 max = 0;
|
|
|
939 LIST_LOOP (tail, suffixes)
|
|
|
940 {
|
|
|
941 if (XSTRING_LENGTH (XCAR (tail)) > max)
|
|
|
942 max = XSTRING_LENGTH (XCAR (tail));
|
|
|
943 }
|
|
|
944 }
|
|
|
945 else if (NILP (suffixes))
|
|
|
946 max = 0;
|
|
|
947 else
|
|
|
948 /* Just take the easy way out */
|
|
|
949 max = XSTRING_LENGTH (suffixes);
|
|
|
950
|
|
|
951 fn_len = XSTRING_LENGTH (filename);
|
|
|
952 fn = (char *) alloca (max + fn_len + 1);
|
|
|
953 memcpy (fn, (char *) XSTRING_DATA (filename), fn_len);
|
|
|
954
|
|
|
955 /* Loop over suffixes. */
|
|
|
956 if (!STRINGP (suffixes))
|
|
|
957 {
|
|
|
958 if (NILP (suffixes))
|
|
|
959 {
|
|
|
960 /* Case a) discussed in the comment above. */
|
|
|
961 fn[fn_len] = 0;
|
|
|
962 if ((*fun) (fn, arg))
|
|
|
963 return;
|
|
|
964 }
|
|
|
965 else
|
|
|
966 {
|
|
|
967 /* Case b) */
|
|
|
968 Lisp_Object tail;
|
|
|
969 LIST_LOOP (tail, suffixes)
|
|
|
970 {
|
|
|
971 memcpy (fn + fn_len, XSTRING_DATA (XCAR (tail)),
|
|
|
972 XSTRING_LENGTH (XCAR (tail)));
|
|
|
973 fn[fn_len + XSTRING_LENGTH (XCAR (tail))] = 0;
|
|
|
974 if ((*fun) (fn, arg))
|
|
|
975 return;
|
|
|
976 }
|
|
|
977 }
|
|
|
978 }
|
|
|
979 else
|
|
|
980 {
|
|
|
981 /* Case c) */
|
|
442
|
982 const char *nsuffix = (const char *) XSTRING_DATA (suffixes);
|
|
428
|
983
|
|
|
984 while (1)
|
|
|
985 {
|
|
|
986 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
442
|
987 int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix);
|
|
428
|
988
|
|
|
989 /* Concatenate path element/specified name with the suffix. */
|
|
|
990 strncpy (fn + fn_len, nsuffix, lsuffix);
|
|
|
991 fn[fn_len + lsuffix] = 0;
|
|
|
992
|
|
|
993 if ((*fun) (fn, arg))
|
|
|
994 return;
|
|
|
995
|
|
|
996 /* Advance to next suffix. */
|
|
|
997 if (esuffix == 0)
|
|
|
998 break;
|
|
|
999 nsuffix += lsuffix + 1;
|
|
|
1000 }
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 struct locate_file_in_directory_mapper_closure {
|
|
|
1005 int fd;
|
|
|
1006 Lisp_Object *storeptr;
|
|
|
1007 int mode;
|
|
|
1008 };
|
|
|
1009
|
|
|
1010 static int
|
|
|
1011 locate_file_in_directory_mapper (char *fn, void *arg)
|
|
|
1012 {
|
|
|
1013 struct locate_file_in_directory_mapper_closure *closure =
|
|
|
1014 (struct locate_file_in_directory_mapper_closure *)arg;
|
|
|
1015 struct stat st;
|
|
|
1016
|
|
|
1017 /* Ignore file if it's a directory. */
|
|
442
|
1018 if (xemacs_stat (fn, &st) >= 0
|
|
428
|
1019 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
1020 {
|
|
|
1021 /* Check that we can access or open it. */
|
|
|
1022 if (closure->mode >= 0)
|
|
|
1023 closure->fd = access (fn, closure->mode);
|
|
|
1024 else
|
|
|
1025 closure->fd = open (fn, O_RDONLY | OPEN_BINARY, 0);
|
|
|
1026
|
|
|
1027 if (closure->fd >= 0)
|
|
|
1028 {
|
|
|
1029 /* We succeeded; return this descriptor and filename. */
|
|
|
1030 if (closure->storeptr)
|
|
|
1031 *closure->storeptr = build_string (fn);
|
|
|
1032
|
|
442
|
1033 #ifndef WIN32_NATIVE
|
|
428
|
1034 /* If we actually opened the file, set close-on-exec flag
|
|
|
1035 on the new descriptor so that subprocesses can't whack
|
|
|
1036 at it. */
|
|
|
1037 if (closure->mode < 0)
|
|
|
1038 (void) fcntl (closure->fd, F_SETFD, FD_CLOEXEC);
|
|
|
1039 #endif
|
|
|
1040
|
|
|
1041 return 1;
|
|
|
1042 }
|
|
|
1043 }
|
|
|
1044 /* Keep mapping. */
|
|
|
1045 return 0;
|
|
|
1046 }
|
|
|
1047
|
|
|
1048
|
|
|
1049 /* look for STR in PATH, optionally adding SUFFIXES. DIRECTORY need
|
|
|
1050 not have been expanded. */
|
|
|
1051
|
|
|
1052 static int
|
|
|
1053 locate_file_in_directory (Lisp_Object directory, Lisp_Object str,
|
|
|
1054 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1055 int mode)
|
|
|
1056 {
|
|
|
1057 /* This function can GC */
|
|
|
1058 struct locate_file_in_directory_mapper_closure closure;
|
|
|
1059 Lisp_Object filename = Qnil;
|
|
|
1060 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1061
|
|
|
1062 GCPRO3 (directory, str, filename);
|
|
|
1063
|
|
|
1064 filename = Fexpand_file_name (str, directory);
|
|
|
1065 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
1066 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
1067 /* Of course, this could conceivably lose if luser sets
|
|
|
1068 default-directory to be something non-absolute ... */
|
|
|
1069 {
|
|
|
1070 if (NILP (filename))
|
|
|
1071 /* NIL means current directory */
|
|
|
1072 filename = current_buffer->directory;
|
|
|
1073 else
|
|
|
1074 filename = Fexpand_file_name (filename,
|
|
|
1075 current_buffer->directory);
|
|
|
1076 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
1077 {
|
|
|
1078 /* Give up on this directory! */
|
|
|
1079 UNGCPRO;
|
|
|
1080 return -1;
|
|
|
1081 }
|
|
|
1082 }
|
|
|
1083
|
|
|
1084 closure.fd = -1;
|
|
|
1085 closure.storeptr = storeptr;
|
|
|
1086 closure.mode = mode;
|
|
|
1087
|
|
|
1088 locate_file_map_suffixes (filename, suffixes, locate_file_in_directory_mapper,
|
|
|
1089 &closure);
|
|
|
1090
|
|
|
1091 UNGCPRO;
|
|
|
1092 return closure.fd;
|
|
|
1093 }
|
|
|
1094
|
|
|
1095 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
1096
|
|
|
1097 static int
|
|
|
1098 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
1099 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1100 int mode)
|
|
|
1101 {
|
|
|
1102 /* This function can GC */
|
|
|
1103 int absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
1104
|
|
|
1105 EXTERNAL_LIST_LOOP (path, path)
|
|
|
1106 {
|
|
|
1107 int val = locate_file_in_directory (XCAR (path), str, suffixes, storeptr,
|
|
|
1108 mode);
|
|
|
1109 if (val >= 0)
|
|
|
1110 return val;
|
|
|
1111 if (absolute)
|
|
|
1112 break;
|
|
|
1113 }
|
|
|
1114 return -1;
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 static int
|
|
|
1118 locate_file_construct_suffixed_files_mapper (char *fn, void *arg)
|
|
|
1119 {
|
|
|
1120 Lisp_Object *tail = (Lisp_Object *)arg;
|
|
|
1121 *tail = Fcons (build_string (fn), *tail);
|
|
|
1122 return 0;
|
|
|
1123 }
|
|
|
1124
|
|
|
1125 /* Construct a list of all files to search for.
|
|
|
1126 It makes sense to have this despite locate_file_map_suffixes()
|
|
|
1127 because we need Lisp strings to access the hash-table, and it would
|
|
|
1128 be inefficient to create them on the fly, again and again for each
|
|
|
1129 path component. See locate_file(). */
|
|
|
1130
|
|
|
1131 static Lisp_Object
|
|
|
1132 locate_file_construct_suffixed_files (Lisp_Object filename,
|
|
|
1133 Lisp_Object suffixes)
|
|
|
1134 {
|
|
|
1135 Lisp_Object tail = Qnil;
|
|
|
1136 struct gcpro gcpro1;
|
|
|
1137 GCPRO1 (tail);
|
|
|
1138
|
|
|
1139 locate_file_map_suffixes (filename, suffixes,
|
|
|
1140 locate_file_construct_suffixed_files_mapper,
|
|
|
1141 &tail);
|
|
|
1142
|
|
|
1143 UNGCPRO;
|
|
|
1144 return Fnreverse (tail);
|
|
|
1145 }
|
|
|
1146
|
|
|
1147 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /*
|
|
|
1148 Clear the hash records for the specified list of directories.
|
|
|
1149 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1150 track the following environmental changes:
|
|
|
1151
|
|
|
1152 -- changes of any sort to the list of directories to be searched.
|
|
|
1153 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1154 directories in the list.
|
|
|
1155 -- byte-compilation of a .el file into a .elc file.
|
|
|
1156
|
|
|
1157 `locate-file' will primarily get confused if you add a file that shadows
|
|
|
1158 \(i.e. has the same name as) another file further down in the directory list.
|
|
|
1159 In this case, you must call `locate-file-clear-hashing'.
|
|
|
1160
|
|
|
1161 If PATH is t, it means to fully clear all the accumulated hashes. This
|
|
|
1162 can be used if the internal tables grow too large, or when dumping.
|
|
|
1163 */
|
|
|
1164 (path))
|
|
|
1165 {
|
|
|
1166 if (EQ (path, Qt))
|
|
|
1167 Fclrhash (Vlocate_file_hash_table);
|
|
|
1168 else
|
|
|
1169 {
|
|
|
1170 Lisp_Object pathtail;
|
|
|
1171 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1172 {
|
|
|
1173 Lisp_Object pathel = Fexpand_file_name (XCAR (pathtail), Qnil);
|
|
|
1174 Fremhash (pathel, Vlocate_file_hash_table);
|
|
|
1175 }
|
|
|
1176 }
|
|
|
1177 return Qnil;
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 /* Search for a file whose name is STR, looking in directories
|
|
|
1181 in the Lisp list PATH, and trying suffixes from SUFFIXES.
|
|
|
1182 SUFFIXES is a list of possible suffixes, or (for backward
|
|
|
1183 compatibility) a string containing possible suffixes separated by
|
|
|
1184 colons.
|
|
|
1185 On success, returns a file descriptor. On failure, returns -1.
|
|
|
1186
|
|
|
1187 MODE nonnegative means don't open the files,
|
|
|
1188 just look for one for which access(file,MODE) succeeds. In this case,
|
|
|
1189 returns 1 on success.
|
|
|
1190
|
|
|
1191 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
1192 the file actually found should be stored as a Lisp string.
|
|
|
1193 Nil is stored there on failure.
|
|
|
1194
|
|
|
1195 Called openp() in FSFmacs. */
|
|
|
1196
|
|
|
1197 int
|
|
|
1198 locate_file (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes,
|
|
|
1199 Lisp_Object *storeptr, int mode)
|
|
|
1200 {
|
|
|
1201 /* This function can GC */
|
|
|
1202 Lisp_Object suffixtab = Qnil;
|
|
|
1203 Lisp_Object pathtail, pathel_expanded;
|
|
|
1204 int val;
|
|
|
1205 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
1206
|
|
|
1207 if (storeptr)
|
|
|
1208 *storeptr = Qnil;
|
|
|
1209
|
|
|
1210 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
1211 unless some caller has fucked up. There are known instances that
|
|
|
1212 call us with build_string("foo:bar") as SUFFIXES, though. */
|
|
|
1213 GCPRO4 (path, str, suffixes, suffixtab);
|
|
|
1214
|
|
|
1215 /* if this filename has directory components, it's too complicated
|
|
|
1216 to try and use the hash tables. */
|
|
|
1217 if (!NILP (Ffile_name_directory (str)))
|
|
|
1218 {
|
|
|
1219 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1220 UNGCPRO;
|
|
|
1221 return val;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 suffixtab = locate_file_construct_suffixed_files (str, suffixes);
|
|
|
1225
|
|
|
1226 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1227 {
|
|
|
1228 Lisp_Object pathel = XCAR (pathtail);
|
|
|
1229 Lisp_Object hash_table;
|
|
|
1230 Lisp_Object tail;
|
|
|
1231 int found = 0;
|
|
|
1232
|
|
|
1233 /* If this path element is relative, we have to look by hand. */
|
|
442
|
1234 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel)))
|
|
428
|
1235 {
|
|
|
1236 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1237 mode);
|
|
|
1238 if (val >= 0)
|
|
|
1239 {
|
|
|
1240 UNGCPRO;
|
|
|
1241 return val;
|
|
|
1242 }
|
|
|
1243 continue;
|
|
|
1244 }
|
|
|
1245
|
|
|
1246 pathel_expanded = Fexpand_file_name (pathel, Qnil);
|
|
|
1247 hash_table = locate_file_find_directory_hash_table (pathel_expanded);
|
|
|
1248
|
|
|
1249 if (!NILP (hash_table))
|
|
|
1250 {
|
|
|
1251 /* Loop over suffixes. */
|
|
|
1252 LIST_LOOP (tail, suffixtab)
|
|
|
1253 if (!NILP (Fgethash (XCAR (tail), hash_table, Qnil)))
|
|
|
1254 {
|
|
|
1255 found = 1;
|
|
|
1256 break;
|
|
|
1257 }
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 if (found)
|
|
|
1261 {
|
|
|
1262 /* This is a likely candidate. Look by hand in this directory
|
|
|
1263 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1264 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1265 mode);
|
|
|
1266 if (val >= 0)
|
|
|
1267 {
|
|
|
1268 UNGCPRO;
|
|
|
1269 return val;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1273 a directory ...) So refresh our hashing. */
|
|
|
1274 locate_file_refresh_hashing (pathel_expanded);
|
|
|
1275 }
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 /* File is probably not there, but check the hard way just in case. */
|
|
|
1279 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1280 if (val >= 0)
|
|
|
1281 {
|
|
|
1282 /* Sneaky user added a file without telling us. */
|
|
|
1283 Flocate_file_clear_hashing (path);
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 UNGCPRO;
|
|
|
1287 return val;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290
|
|
|
1291 #ifdef LOADHIST
|
|
|
1292
|
|
|
1293 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1294 into the load_history variable. The details depend on whether
|
|
|
1295 the source has an associated file name or not. */
|
|
|
1296
|
|
|
1297 static void
|
|
|
1298 build_load_history (int loading, Lisp_Object source)
|
|
|
1299 {
|
|
|
1300 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1301 REGISTER Lisp_Object tem, tem2;
|
|
|
1302 int foundit;
|
|
|
1303
|
|
|
1304 #if !defined(LOADHIST_DUMPED)
|
|
|
1305 /* Don't bother recording anything for preloaded files. */
|
|
|
1306 if (purify_flag)
|
|
|
1307 return;
|
|
|
1308 #endif
|
|
|
1309
|
|
|
1310 tail = Vload_history;
|
|
|
1311 prev = Qnil;
|
|
|
1312 foundit = 0;
|
|
|
1313 while (!NILP (tail))
|
|
|
1314 {
|
|
|
1315 tem = Fcar (tail);
|
|
|
1316
|
|
|
1317 /* Find the feature's previous assoc list... */
|
|
|
1318 if (internal_equal (source, Fcar (tem), 0))
|
|
|
1319 {
|
|
|
1320 foundit = 1;
|
|
|
1321
|
|
|
1322 /* If we're loading, remove it. */
|
|
|
1323 if (loading)
|
|
|
1324 {
|
|
|
1325 if (NILP (prev))
|
|
|
1326 Vload_history = Fcdr (tail);
|
|
|
1327 else
|
|
|
1328 Fsetcdr (prev, Fcdr (tail));
|
|
|
1329 }
|
|
|
1330
|
|
|
1331 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1332 else
|
|
|
1333 {
|
|
|
1334 tem2 = Vcurrent_load_list;
|
|
|
1335
|
|
|
1336 while (CONSP (tem2))
|
|
|
1337 {
|
|
|
1338 newelt = XCAR (tem2);
|
|
|
1339
|
|
|
1340 if (NILP (Fmemq (newelt, tem)))
|
|
|
1341 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1342 Fcons (newelt, Fcdr (tem))));
|
|
|
1343
|
|
|
1344 tem2 = XCDR (tem2);
|
|
|
1345 QUIT;
|
|
|
1346 }
|
|
|
1347 }
|
|
|
1348 }
|
|
|
1349 else
|
|
|
1350 prev = tail;
|
|
|
1351 tail = Fcdr (tail);
|
|
|
1352 QUIT;
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1356 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1357 an existing member for the current source. */
|
|
|
1358 if (loading || !foundit)
|
|
|
1359 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1360 Vload_history);
|
|
|
1361 }
|
|
|
1362
|
|
|
1363 #else /* !LOADHIST */
|
|
|
1364 #define build_load_history(x,y)
|
|
|
1365 #endif /* !LOADHIST */
|
|
|
1366
|
|
|
1367
|
|
|
1368 #if 0 /* FSFmacs defun hack */
|
|
|
1369 Lisp_Object
|
|
|
1370 unreadpure (void) /* Used as unwind-protect function in readevalloop */
|
|
|
1371 {
|
|
|
1372 read_pure = 0;
|
|
|
1373 return Qnil;
|
|
|
1374 }
|
|
|
1375 #endif /* 0 */
|
|
|
1376
|
|
|
1377 static void
|
|
|
1378 readevalloop (Lisp_Object readcharfun,
|
|
|
1379 Lisp_Object sourcename,
|
|
|
1380 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1381 int printflag)
|
|
|
1382 {
|
|
|
1383 /* This function can GC */
|
|
|
1384 REGISTER Emchar c;
|
|
|
1385 REGISTER Lisp_Object val = Qnil;
|
|
|
1386 int speccount = specpdl_depth ();
|
|
|
1387 struct gcpro gcpro1, gcpro2;
|
|
|
1388 struct buffer *b = 0;
|
|
|
1389
|
|
|
1390 if (BUFFERP (readcharfun))
|
|
|
1391 b = XBUFFER (readcharfun);
|
|
|
1392 else if (MARKERP (readcharfun))
|
|
|
1393 b = XMARKER (readcharfun)->buffer;
|
|
|
1394
|
|
|
1395 /* Don't do this. It is not necessary, and it needlessly exposes
|
|
|
1396 READCHARFUN (which can be a stream) to Lisp. --hniksic */
|
|
|
1397 /*specbind (Qstandard_input, readcharfun);*/
|
|
|
1398
|
|
|
1399 specbind (Qcurrent_load_list, Qnil);
|
|
|
1400
|
|
|
1401 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1402 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1403 #endif
|
|
|
1404 GCPRO2 (val, sourcename);
|
|
|
1405
|
|
|
1406 LOADHIST_ATTACH (sourcename);
|
|
|
1407
|
|
|
1408 while (1)
|
|
|
1409 {
|
|
|
1410 QUIT;
|
|
|
1411
|
|
|
1412 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
|
1413 error ("Reading from killed buffer");
|
|
|
1414
|
|
|
1415 c = readchar (readcharfun);
|
|
|
1416 if (c == ';')
|
|
|
1417 {
|
|
|
1418 /* Skip comment */
|
|
|
1419 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1420 QUIT;
|
|
|
1421 continue;
|
|
|
1422 }
|
|
|
1423 if (c < 0)
|
|
|
1424 break;
|
|
|
1425
|
|
|
1426 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1427 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1428 continue;
|
|
|
1429
|
|
|
1430 #if 0 /* FSFmacs defun hack */
|
|
|
1431 if (purify_flag && c == '(')
|
|
|
1432 {
|
|
|
1433 int count1 = specpdl_depth ();
|
|
|
1434 record_unwind_protect (unreadpure, Qnil);
|
|
|
1435 val = read_list (readcharfun, ')', -1, 1);
|
|
|
1436 unbind_to (count1, Qnil);
|
|
|
1437 }
|
|
|
1438 else
|
|
|
1439 #else /* No "defun hack" -- Emacs 19 uses read-time syntax for bytecodes */
|
|
|
1440 {
|
|
|
1441 unreadchar (readcharfun, c);
|
|
|
1442 Vread_objects = Qnil;
|
|
|
1443 if (NILP (Vload_read_function))
|
|
|
1444 val = read0 (readcharfun);
|
|
|
1445 else
|
|
|
1446 val = call1 (Vload_read_function, readcharfun);
|
|
|
1447 }
|
|
|
1448 #endif
|
|
|
1449 val = (*evalfun) (val);
|
|
|
1450 if (printflag)
|
|
|
1451 {
|
|
|
1452 Vvalues = Fcons (val, Vvalues);
|
|
|
1453 if (EQ (Vstandard_output, Qt))
|
|
|
1454 Fprin1 (val, Qnil);
|
|
|
1455 else
|
|
|
1456 Fprint (val, Qnil);
|
|
|
1457 }
|
|
|
1458 }
|
|
|
1459
|
|
|
1460 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1461 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1462 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1463 sourcename);
|
|
|
1464 UNGCPRO;
|
|
|
1465
|
|
|
1466 unbind_to (speccount, Qnil);
|
|
|
1467 }
|
|
|
1468
|
|
|
1469 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /*
|
|
|
1470 Execute BUFFER as Lisp code.
|
|
|
1471 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1472 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1473 PRINTFLAG controls printing of output:
|
|
444
|
1474 nil means discard it; anything else is a stream for printing.
|
|
428
|
1475
|
|
|
1476 If there is no error, point does not move. If there is an error,
|
|
|
1477 point remains at the end of the last character read from the buffer.
|
|
|
1478 */
|
|
444
|
1479 (buffer, printflag))
|
|
428
|
1480 {
|
|
|
1481 /* This function can GC */
|
|
|
1482 int speccount = specpdl_depth ();
|
|
|
1483 Lisp_Object tem, buf;
|
|
|
1484
|
|
444
|
1485 if (NILP (buffer))
|
|
428
|
1486 buf = Fcurrent_buffer ();
|
|
|
1487 else
|
|
444
|
1488 buf = Fget_buffer (buffer);
|
|
428
|
1489 if (NILP (buf))
|
|
|
1490 error ("No such buffer.");
|
|
|
1491
|
|
|
1492 if (NILP (printflag))
|
|
|
1493 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1494 else
|
|
|
1495 tem = printflag;
|
|
|
1496 specbind (Qstandard_output, tem);
|
|
|
1497 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1498 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1499 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1500 !NILP (printflag));
|
|
|
1501
|
|
|
1502 return unbind_to (speccount, Qnil);
|
|
|
1503 }
|
|
|
1504
|
|
|
1505 #if 0
|
|
|
1506 xxDEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /*
|
|
|
1507 Execute the current buffer as Lisp code.
|
|
|
1508 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1509 nil means discard it; anything else is stream for print.
|
|
|
1510
|
|
|
1511 If there is no error, point does not move. If there is an error,
|
|
|
1512 point remains at the end of the last character read from the buffer.
|
|
|
1513 */
|
|
|
1514 (printflag))
|
|
|
1515 {
|
|
|
1516 code omitted;
|
|
|
1517 }
|
|
|
1518 #endif /* 0 */
|
|
|
1519
|
|
|
1520 DEFUN ("eval-region", Feval_region, 2, 3, "r", /*
|
|
|
1521 Execute the region as Lisp code.
|
|
444
|
1522 When called from programs, expects two arguments START and END
|
|
428
|
1523 giving starting and ending indices in the current buffer
|
|
|
1524 of the text to be executed.
|
|
444
|
1525 Programs can pass third optional argument STREAM which controls output:
|
|
428
|
1526 nil means discard it; anything else is stream for printing it.
|
|
|
1527
|
|
|
1528 If there is no error, point does not move. If there is an error,
|
|
|
1529 point remains at the end of the last character read from the buffer.
|
|
|
1530
|
|
|
1531 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1532 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1533 see some text temporarily disappear because of this.
|
|
|
1534 */
|
|
444
|
1535 (start, end, stream))
|
|
428
|
1536 {
|
|
|
1537 /* This function can GC */
|
|
|
1538 int speccount = specpdl_depth ();
|
|
|
1539 Lisp_Object tem;
|
|
|
1540 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1541
|
|
444
|
1542 if (NILP (stream))
|
|
428
|
1543 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1544 else
|
|
444
|
1545 tem = stream;
|
|
428
|
1546 specbind (Qstandard_output, tem);
|
|
|
1547
|
|
444
|
1548 if (NILP (stream))
|
|
428
|
1549 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1550 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1551
|
|
444
|
1552 /* This both uses start and checks its type. */
|
|
|
1553 Fgoto_char (start, cbuf);
|
|
|
1554 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), end, cbuf);
|
|
428
|
1555 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
444
|
1556 !NILP (stream));
|
|
428
|
1557
|
|
|
1558 return unbind_to (speccount, Qnil);
|
|
|
1559 }
|
|
|
1560
|
|
|
1561 DEFUN ("read", Fread, 0, 1, 0, /*
|
|
|
1562 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1563 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1564 STREAM or the value of `standard-input' may be:
|
|
|
1565 a buffer (read from point and advance it)
|
|
|
1566 a marker (read from where it points and advance it)
|
|
|
1567 a function (call it with no arguments for each character,
|
|
|
1568 call it with a char as argument to push a char back)
|
|
|
1569 a string (takes text from string, starting at the beginning)
|
|
|
1570 t (read text line using minibuffer and use it).
|
|
|
1571 */
|
|
|
1572 (stream))
|
|
|
1573 {
|
|
|
1574 if (NILP (stream))
|
|
|
1575 stream = Vstandard_input;
|
|
|
1576 if (EQ (stream, Qt))
|
|
|
1577 stream = Qread_char;
|
|
|
1578
|
|
|
1579 Vread_objects = Qnil;
|
|
|
1580
|
|
|
1581 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1582 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1583 #endif
|
|
|
1584 if (EQ (stream, Qread_char))
|
|
|
1585 {
|
|
|
1586 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
|
1587 build_translated_string ("Lisp expression: "));
|
|
|
1588 return Fcar (Fread_from_string (val, Qnil, Qnil));
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 if (STRINGP (stream))
|
|
|
1592 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1593
|
|
|
1594 return read0 (stream);
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /*
|
|
|
1598 Read one Lisp expression which is represented as text by STRING.
|
|
|
1599 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1600 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1601 they default to 0 and (length STRING) respectively.
|
|
|
1602 */
|
|
|
1603 (string, start, end))
|
|
|
1604 {
|
|
|
1605 Bytecount startval, endval;
|
|
|
1606 Lisp_Object tem;
|
|
|
1607 Lisp_Object lispstream = Qnil;
|
|
|
1608 struct gcpro gcpro1;
|
|
|
1609
|
|
|
1610 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1611 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1612 #endif
|
|
|
1613 GCPRO1 (lispstream);
|
|
|
1614 CHECK_STRING (string);
|
|
|
1615 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1616 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1617 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1618 endval - startval);
|
|
|
1619
|
|
|
1620 Vread_objects = Qnil;
|
|
|
1621
|
|
|
1622 tem = read0 (lispstream);
|
|
|
1623 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1624 At least our reader is reentrant ... */
|
|
|
1625 tem =
|
|
|
1626 (Fcons (tem, make_int
|
|
|
1627 (bytecount_to_charcount
|
|
|
1628 (XSTRING_DATA (string),
|
|
|
1629 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1630 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1631 UNGCPRO;
|
|
|
1632 return tem;
|
|
|
1633 }
|
|
|
1634
|
|
|
1635
|
|
|
1636 #ifdef LISP_BACKQUOTES
|
|
|
1637
|
|
|
1638 static Lisp_Object
|
|
|
1639 backquote_unwind (Lisp_Object ptr)
|
|
|
1640 { /* used as unwind-protect function in read0() */
|
|
|
1641 int *counter = (int *) get_opaque_ptr (ptr);
|
|
|
1642 if (--*counter < 0)
|
|
|
1643 *counter = 0;
|
|
|
1644 free_opaque_ptr (ptr);
|
|
|
1645 return Qnil;
|
|
|
1646 }
|
|
|
1647
|
|
|
1648 #endif
|
|
|
1649
|
|
|
1650 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1651 are not allowed. See also read1(). */
|
|
|
1652 static Lisp_Object
|
|
|
1653 read0 (Lisp_Object readcharfun)
|
|
|
1654 {
|
|
|
1655 Lisp_Object val = read1 (readcharfun);
|
|
|
1656
|
|
|
1657 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1658 {
|
|
|
1659 Emchar c = XCHAR (XCDR (val));
|
|
|
1660 free_cons (XCONS (val));
|
|
|
1661 return Fsignal (Qinvalid_read_syntax,
|
|
|
1662 list1 (Fchar_to_string (make_char (c))));
|
|
|
1663 }
|
|
|
1664
|
|
|
1665 return val;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 static Emchar
|
|
|
1669 read_escape (Lisp_Object readcharfun)
|
|
|
1670 {
|
|
|
1671 /* This function can GC */
|
|
|
1672 Emchar c = readchar (readcharfun);
|
|
|
1673
|
|
|
1674 if (c < 0)
|
|
|
1675 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1676
|
|
|
1677 switch (c)
|
|
|
1678 {
|
|
|
1679 case 'a': return '\007';
|
|
|
1680 case 'b': return '\b';
|
|
|
1681 case 'd': return 0177;
|
|
|
1682 case 'e': return 033;
|
|
|
1683 case 'f': return '\f';
|
|
|
1684 case 'n': return '\n';
|
|
|
1685 case 'r': return '\r';
|
|
|
1686 case 't': return '\t';
|
|
|
1687 case 'v': return '\v';
|
|
|
1688 case '\n': return -1;
|
|
|
1689
|
|
|
1690 case 'M':
|
|
|
1691 c = readchar (readcharfun);
|
|
|
1692 if (c < 0)
|
|
|
1693 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1694 if (c != '-')
|
|
|
1695 error ("Invalid escape character syntax");
|
|
|
1696 c = readchar (readcharfun);
|
|
|
1697 if (c < 0)
|
|
|
1698 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1699 if (c == '\\')
|
|
|
1700 c = read_escape (readcharfun);
|
|
|
1701 return c | 0200;
|
|
|
1702
|
|
|
1703 /* Originally, FSF_KEYS provided a degree of FSF Emacs
|
|
|
1704 compatibility by defining character "modifiers" alt, super,
|
|
|
1705 hyper and shift to infest the characters (i.e. integers).
|
|
|
1706
|
|
|
1707 However, this doesn't cut it for XEmacs 20, which
|
|
|
1708 distinguishes characters from integers. Without Mule, ?\H-a
|
|
|
1709 simply returns ?a because every character is clipped into
|
|
|
1710 0-255. Under Mule it is much worse -- ?\H-a with FSF_KEYS
|
|
|
1711 produces an illegal character, and moves us to crash-land.
|
|
|
1712
|
|
|
1713 For these reasons, FSF_KEYS hack is useless and without hope
|
|
|
1714 of ever working under XEmacs 20. */
|
|
|
1715 #undef FSF_KEYS
|
|
|
1716
|
|
|
1717 #ifdef FSF_KEYS
|
|
|
1718 #define alt_modifier (0x040000)
|
|
|
1719 #define super_modifier (0x080000)
|
|
|
1720 #define hyper_modifier (0x100000)
|
|
|
1721 #define shift_modifier (0x200000)
|
|
|
1722 /* fsf uses a different modifiers for meta and control. Possibly
|
|
|
1723 byte_compiled code will still work fsfmacs, though... --Stig
|
|
|
1724
|
|
|
1725 #define ctl_modifier (0x400000)
|
|
|
1726 #define meta_modifier (0x800000)
|
|
|
1727 */
|
|
|
1728 #define FSF_LOSSAGE(mask) \
|
|
|
1729 if (fail_on_bucky_bit_character_escapes || \
|
|
|
1730 ((c = readchar (readcharfun)) != '-')) \
|
|
|
1731 error ("Invalid escape character syntax"); \
|
|
|
1732 c = readchar (readcharfun); \
|
|
|
1733 if (c < 0) \
|
|
|
1734 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun))); \
|
|
|
1735 if (c == '\\') \
|
|
|
1736 c = read_escape (readcharfun); \
|
|
|
1737 return c | mask
|
|
|
1738
|
|
|
1739 case 'S': FSF_LOSSAGE (shift_modifier);
|
|
|
1740 case 'H': FSF_LOSSAGE (hyper_modifier);
|
|
|
1741 case 'A': FSF_LOSSAGE (alt_modifier);
|
|
|
1742 case 's': FSF_LOSSAGE (super_modifier);
|
|
|
1743 #undef alt_modifier
|
|
|
1744 #undef super_modifier
|
|
|
1745 #undef hyper_modifier
|
|
|
1746 #undef shift_modifier
|
|
|
1747 #undef FSF_LOSSAGE
|
|
|
1748
|
|
|
1749 #endif /* FSF_KEYS */
|
|
|
1750
|
|
|
1751 case 'C':
|
|
|
1752 c = readchar (readcharfun);
|
|
|
1753 if (c < 0)
|
|
|
1754 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1755 if (c != '-')
|
|
|
1756 error ("Invalid escape character syntax");
|
|
|
1757 case '^':
|
|
|
1758 c = readchar (readcharfun);
|
|
|
1759 if (c < 0)
|
|
|
1760 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1761 if (c == '\\')
|
|
|
1762 c = read_escape (readcharfun);
|
|
|
1763 /* FSFmacs junk for non-ASCII controls.
|
|
|
1764 Not used here. */
|
|
|
1765 if (c == '?')
|
|
|
1766 return 0177;
|
|
|
1767 else
|
|
|
1768 return c & (0200 | 037);
|
|
|
1769
|
|
|
1770 case '0':
|
|
|
1771 case '1':
|
|
|
1772 case '2':
|
|
|
1773 case '3':
|
|
|
1774 case '4':
|
|
|
1775 case '5':
|
|
|
1776 case '6':
|
|
|
1777 case '7':
|
|
|
1778 /* An octal escape, as in ANSI C. */
|
|
|
1779 {
|
|
|
1780 REGISTER Emchar i = c - '0';
|
|
|
1781 REGISTER int count = 0;
|
|
|
1782 while (++count < 3)
|
|
|
1783 {
|
|
|
1784 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1785 i = (i << 3) + (c - '0');
|
|
|
1786 else
|
|
|
1787 {
|
|
|
1788 unreadchar (readcharfun, c);
|
|
|
1789 break;
|
|
|
1790 }
|
|
|
1791 }
|
|
|
1792 return i;
|
|
|
1793 }
|
|
|
1794
|
|
|
1795 case 'x':
|
|
|
1796 /* A hex escape, as in ANSI C, except that we only allow latin-1
|
|
|
1797 characters to be read this way. What is "\x4e03" supposed to
|
|
|
1798 mean, anyways, if the internal representation is hidden?
|
|
|
1799 This is also consistent with the treatment of octal escapes. */
|
|
|
1800 {
|
|
|
1801 REGISTER Emchar i = 0;
|
|
|
1802 REGISTER int count = 0;
|
|
|
1803 while (++count <= 2)
|
|
|
1804 {
|
|
|
1805 c = readchar (readcharfun);
|
|
|
1806 /* Remember, can't use isdigit(), isalpha() etc. on Emchars */
|
|
|
1807 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1808 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1809 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1810 else
|
|
|
1811 {
|
|
|
1812 unreadchar (readcharfun, c);
|
|
|
1813 break;
|
|
|
1814 }
|
|
|
1815 }
|
|
|
1816 return i;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 #ifdef MULE
|
|
|
1820 /* #### need some way of reading an extended character with
|
|
|
1821 an escape sequence. */
|
|
|
1822 #endif
|
|
|
1823
|
|
|
1824 default:
|
|
|
1825 return c;
|
|
|
1826 }
|
|
|
1827 }
|
|
|
1828
|
|
|
1829
|
|
|
1830
|
|
|
1831 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1832 static Bytecount
|
|
|
1833 read_atom_0 (Lisp_Object readcharfun, Emchar firstchar, int *saw_a_backslash)
|
|
|
1834 {
|
|
|
1835 /* This function can GC */
|
|
|
1836 Emchar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
|
1837 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1838
|
|
|
1839 *saw_a_backslash = 0;
|
|
|
1840
|
|
|
1841 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1842 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1843 || c == '(' || c == ')'
|
|
|
1844 #ifndef LISP_FLOAT_TYPE
|
|
|
1845 /* If we have floating-point support, then we need
|
|
|
1846 to allow <digits><dot><digits>. */
|
|
|
1847 || c =='.'
|
|
|
1848 #endif /* not LISP_FLOAT_TYPE */
|
|
|
1849 || c == '[' || c == ']' || c == '#'
|
|
|
1850 ))
|
|
|
1851 {
|
|
|
1852 if (c == '\\')
|
|
|
1853 {
|
|
|
1854 c = readchar (readcharfun);
|
|
|
1855 if (c < 0)
|
|
|
1856 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1857 *saw_a_backslash = 1;
|
|
|
1858 }
|
|
|
1859 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
1860 QUIT;
|
|
|
1861 c = readchar (readcharfun);
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 if (c >= 0)
|
|
|
1865 unreadchar (readcharfun, c);
|
|
|
1866 /* blasted terminating 0 */
|
|
|
1867 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), 0);
|
|
|
1868 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1869
|
|
|
1870 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1;
|
|
|
1871 }
|
|
|
1872
|
|
442
|
1873 static Lisp_Object parse_integer (const Bufbyte *buf, Bytecount len, int base);
|
|
428
|
1874
|
|
|
1875 static Lisp_Object
|
|
|
1876 read_atom (Lisp_Object readcharfun,
|
|
|
1877 Emchar firstchar,
|
|
|
1878 int uninterned_symbol)
|
|
|
1879 {
|
|
|
1880 /* This function can GC */
|
|
|
1881 int saw_a_backslash;
|
|
|
1882 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1883 char *read_ptr = (char *)
|
|
|
1884 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1885
|
|
|
1886 /* Is it an integer? */
|
|
|
1887 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1888 {
|
|
|
1889 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1890 being an integer or a float. This means that 123\456 is a
|
|
|
1891 symbol, as is \123 (which is the way (intern "123") prints).
|
|
|
1892 Also, if token was preceded by #:, it's always a symbol.
|
|
|
1893 */
|
|
|
1894 char *p = read_ptr + len;
|
|
|
1895 char *p1 = read_ptr;
|
|
|
1896
|
|
|
1897 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1898 if (p1 != p)
|
|
|
1899 {
|
|
|
1900 int c;
|
|
|
1901
|
|
|
1902 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1903 p1++;
|
|
|
1904 #ifdef LISP_FLOAT_TYPE
|
|
|
1905 /* Integers can have trailing decimal points. */
|
|
|
1906 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1907 p1++;
|
|
|
1908 #endif
|
|
|
1909 if (p1 == p)
|
|
|
1910 {
|
|
|
1911 /* It is an integer. */
|
|
|
1912 #ifdef LISP_FLOAT_TYPE
|
|
|
1913 if (p1[-1] == '.')
|
|
|
1914 p1[-1] = '\0';
|
|
|
1915 #endif
|
|
|
1916 #if 0
|
|
|
1917 {
|
|
|
1918 int number = 0;
|
|
|
1919 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1920 number = atoi (read_buffer);
|
|
|
1921 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1922 number = atol (read_buffer);
|
|
|
1923 else
|
|
|
1924 abort ();
|
|
|
1925 return make_int (number);
|
|
|
1926 }
|
|
|
1927 #else
|
|
|
1928 return parse_integer ((Bufbyte *) read_ptr, len, 10);
|
|
|
1929 #endif
|
|
|
1930 }
|
|
|
1931 }
|
|
|
1932 #ifdef LISP_FLOAT_TYPE
|
|
|
1933 if (isfloat_string (read_ptr))
|
|
|
1934 return make_float (atof (read_ptr));
|
|
|
1935 #endif
|
|
|
1936 }
|
|
|
1937
|
|
|
1938 {
|
|
|
1939 Lisp_Object sym;
|
|
|
1940 if (uninterned_symbol)
|
|
|
1941 sym = Fmake_symbol ( make_string ((Bufbyte *) read_ptr, len));
|
|
|
1942 else
|
|
|
1943 {
|
|
|
1944 Lisp_Object name = make_string ((Bufbyte *) read_ptr, len);
|
|
|
1945 sym = Fintern (name, Qnil);
|
|
|
1946 }
|
|
|
1947 return sym;
|
|
|
1948 }
|
|
|
1949 }
|
|
|
1950
|
|
|
1951
|
|
|
1952 static Lisp_Object
|
|
442
|
1953 parse_integer (const Bufbyte *buf, Bytecount len, int base)
|
|
428
|
1954 {
|
|
442
|
1955 const Bufbyte *lim = buf + len;
|
|
|
1956 const Bufbyte *p = buf;
|
|
428
|
1957 EMACS_UINT num = 0;
|
|
|
1958 int negativland = 0;
|
|
|
1959
|
|
|
1960 if (*p == '-')
|
|
|
1961 {
|
|
|
1962 negativland = 1;
|
|
|
1963 p++;
|
|
|
1964 }
|
|
|
1965 else if (*p == '+')
|
|
|
1966 {
|
|
|
1967 p++;
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 if (p == lim)
|
|
|
1971 goto loser;
|
|
|
1972
|
|
|
1973 for (; (p < lim) && (*p != '\0'); p++)
|
|
|
1974 {
|
|
|
1975 int c = *p;
|
|
|
1976 EMACS_UINT onum;
|
|
|
1977
|
|
|
1978 if (isdigit (c))
|
|
|
1979 c = c - '0';
|
|
|
1980 else if (isupper (c))
|
|
|
1981 c = c - 'A' + 10;
|
|
|
1982 else if (islower (c))
|
|
|
1983 c = c - 'a' + 10;
|
|
|
1984 else
|
|
|
1985 goto loser;
|
|
|
1986
|
|
|
1987 if (c < 0 || c >= base)
|
|
|
1988 goto loser;
|
|
|
1989
|
|
|
1990 onum = num;
|
|
|
1991 num = num * base + c;
|
|
|
1992 if (num < onum)
|
|
|
1993 goto overflow;
|
|
|
1994 }
|
|
|
1995
|
|
|
1996 {
|
|
|
1997 EMACS_INT int_result = negativland ? - (EMACS_INT) num : (EMACS_INT) num;
|
|
|
1998 Lisp_Object result = make_int (int_result);
|
|
|
1999 if (num && ((XINT (result) < 0) != negativland))
|
|
|
2000 goto overflow;
|
|
|
2001 if (XINT (result) != int_result)
|
|
|
2002 goto overflow;
|
|
|
2003 return result;
|
|
|
2004 }
|
|
|
2005 overflow:
|
|
|
2006 return Fsignal (Qinvalid_read_syntax,
|
|
|
2007 list3 (build_translated_string
|
|
|
2008 ("Integer constant overflow in reader"),
|
|
|
2009 make_string (buf, len),
|
|
|
2010 make_int (base)));
|
|
|
2011 loser:
|
|
|
2012 return Fsignal (Qinvalid_read_syntax,
|
|
|
2013 list3 (build_translated_string
|
|
|
2014 ("Invalid integer constant in reader"),
|
|
|
2015 make_string (buf, len),
|
|
|
2016 make_int (base)));
|
|
|
2017 }
|
|
|
2018
|
|
|
2019
|
|
|
2020 static Lisp_Object
|
|
|
2021 read_integer (Lisp_Object readcharfun, int base)
|
|
|
2022 {
|
|
|
2023 /* This function can GC */
|
|
|
2024 int saw_a_backslash;
|
|
|
2025 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
2026 return (parse_integer
|
|
|
2027 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2028 ((saw_a_backslash)
|
|
|
2029 ? 0 /* make parse_integer signal error */
|
|
|
2030 : len),
|
|
|
2031 base));
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 static Lisp_Object
|
|
|
2035 read_bit_vector (Lisp_Object readcharfun)
|
|
|
2036 {
|
|
|
2037 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char);
|
|
440
|
2038 Lisp_Object val;
|
|
428
|
2039
|
|
|
2040 while (1)
|
|
|
2041 {
|
|
444
|
2042 unsigned char bit;
|
|
|
2043 Emchar c = readchar (readcharfun);
|
|
|
2044 if (c == '0')
|
|
|
2045 bit = 0;
|
|
|
2046 else if (c == '1')
|
|
|
2047 bit = 1;
|
|
|
2048 else
|
|
|
2049 {
|
|
|
2050 if (c >= 0)
|
|
|
2051 unreadchar (readcharfun, c);
|
|
|
2052 break;
|
|
|
2053 }
|
|
|
2054 Dynarr_add (dyn, bit);
|
|
428
|
2055 }
|
|
|
2056
|
|
440
|
2057 val = make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
2058 Dynarr_length (dyn));
|
|
|
2059 Dynarr_free (dyn);
|
|
|
2060
|
|
|
2061 return val;
|
|
428
|
2062 }
|
|
|
2063
|
|
|
2064
|
|
|
2065
|
|
|
2066 /* structures */
|
|
|
2067
|
|
|
2068 struct structure_type *
|
|
|
2069 define_structure_type (Lisp_Object type,
|
|
|
2070 int (*validate) (Lisp_Object data,
|
|
|
2071 Error_behavior errb),
|
|
|
2072 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
2073 {
|
|
|
2074 struct structure_type st;
|
|
|
2075
|
|
|
2076 st.type = type;
|
|
|
2077 st.keywords = Dynarr_new (structure_keyword_entry);
|
|
|
2078 st.validate = validate;
|
|
|
2079 st.instantiate = instantiate;
|
|
|
2080 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
2081
|
|
|
2082 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
2083 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
2084 }
|
|
|
2085
|
|
|
2086 void
|
|
|
2087 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
2088 int (*validate) (Lisp_Object keyword,
|
|
|
2089 Lisp_Object value,
|
|
|
2090 Error_behavior errb))
|
|
|
2091 {
|
|
|
2092 struct structure_keyword_entry en;
|
|
|
2093
|
|
|
2094 en.keyword = keyword;
|
|
|
2095 en.validate = validate;
|
|
|
2096 Dynarr_add (st->keywords, en);
|
|
|
2097 }
|
|
|
2098
|
|
|
2099 static struct structure_type *
|
|
|
2100 recognized_structure_type (Lisp_Object type)
|
|
|
2101 {
|
|
|
2102 int i;
|
|
|
2103
|
|
|
2104 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
2105 {
|
|
|
2106 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
2107 if (EQ (st->type, type))
|
|
|
2108 return st;
|
|
|
2109 }
|
|
|
2110
|
|
|
2111 return 0;
|
|
|
2112 }
|
|
|
2113
|
|
|
2114 static Lisp_Object
|
|
|
2115 read_structure (Lisp_Object readcharfun)
|
|
|
2116 {
|
|
|
2117 Emchar c = readchar (readcharfun);
|
|
|
2118 Lisp_Object list = Qnil;
|
|
|
2119 Lisp_Object orig_list = Qnil;
|
|
|
2120 Lisp_Object already_seen = Qnil;
|
|
|
2121 int keyword_count;
|
|
|
2122 struct structure_type *st;
|
|
|
2123 struct gcpro gcpro1, gcpro2;
|
|
|
2124
|
|
|
2125 GCPRO2 (orig_list, already_seen);
|
|
|
2126 if (c != '(')
|
|
442
|
2127 RETURN_UNGCPRO (continuable_read_syntax_error ("#s not followed by paren"));
|
|
428
|
2128 list = read_list (readcharfun, ')', 0, 0);
|
|
|
2129 orig_list = list;
|
|
|
2130 {
|
|
|
2131 int len = XINT (Flength (list));
|
|
|
2132 if (len == 0)
|
|
442
|
2133 RETURN_UNGCPRO (continuable_read_syntax_error
|
|
428
|
2134 ("structure type not specified"));
|
|
|
2135 if (!(len & 1))
|
|
|
2136 RETURN_UNGCPRO
|
|
442
|
2137 (continuable_read_syntax_error
|
|
428
|
2138 ("structures must have alternating keyword/value pairs"));
|
|
|
2139 }
|
|
|
2140
|
|
|
2141 st = recognized_structure_type (XCAR (list));
|
|
|
2142 if (!st)
|
|
|
2143 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2144 list2 (build_translated_string
|
|
|
2145 ("unrecognized structure type"),
|
|
|
2146 XCAR (list))));
|
|
|
2147
|
|
|
2148 list = Fcdr (list);
|
|
|
2149 keyword_count = Dynarr_length (st->keywords);
|
|
|
2150 while (!NILP (list))
|
|
|
2151 {
|
|
|
2152 Lisp_Object keyword, value;
|
|
|
2153 int i;
|
|
|
2154 struct structure_keyword_entry *en = NULL;
|
|
|
2155
|
|
|
2156 keyword = Fcar (list);
|
|
|
2157 list = Fcdr (list);
|
|
|
2158 value = Fcar (list);
|
|
|
2159 list = Fcdr (list);
|
|
|
2160
|
|
|
2161 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
|
2162 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2163 list2 (build_translated_string
|
|
|
2164 ("structure keyword already seen"),
|
|
|
2165 keyword)));
|
|
|
2166
|
|
|
2167 for (i = 0; i < keyword_count; i++)
|
|
|
2168 {
|
|
|
2169 en = Dynarr_atp (st->keywords, i);
|
|
|
2170 if (EQ (keyword, en->keyword))
|
|
|
2171 break;
|
|
|
2172 }
|
|
|
2173
|
|
|
2174 if (i == keyword_count)
|
|
|
2175 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2176 list2 (build_translated_string
|
|
|
2177 ("unrecognized structure keyword"),
|
|
|
2178 keyword)));
|
|
|
2179
|
|
|
2180 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
2181 RETURN_UNGCPRO
|
|
|
2182 (Fsignal (Qinvalid_read_syntax,
|
|
|
2183 list3 (build_translated_string
|
|
|
2184 ("invalid value for structure keyword"),
|
|
|
2185 keyword, value)));
|
|
|
2186
|
|
|
2187 already_seen = Fcons (keyword, already_seen);
|
|
|
2188 }
|
|
|
2189
|
|
|
2190 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
|
2191 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2192 list2 (build_translated_string
|
|
|
2193 ("invalid structure initializer"),
|
|
|
2194 orig_list)));
|
|
|
2195
|
|
|
2196 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
|
2197 }
|
|
|
2198
|
|
|
2199
|
|
|
2200 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
2201 int terminator);
|
|
|
2202 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
2203
|
|
|
2204 /* Get the next character; filter out whitespace and comments */
|
|
|
2205
|
|
|
2206 static Emchar
|
|
|
2207 reader_nextchar (Lisp_Object readcharfun)
|
|
|
2208 {
|
|
|
2209 /* This function can GC */
|
|
|
2210 Emchar c;
|
|
|
2211
|
|
|
2212 retry:
|
|
|
2213 QUIT;
|
|
|
2214 c = readchar (readcharfun);
|
|
|
2215 if (c < 0)
|
|
|
2216 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2217
|
|
|
2218 switch (c)
|
|
|
2219 {
|
|
|
2220 default:
|
|
|
2221 {
|
|
|
2222 /* Ignore whitespace and control characters */
|
|
|
2223 if (c <= 040)
|
|
|
2224 goto retry;
|
|
|
2225 return c;
|
|
|
2226 }
|
|
|
2227
|
|
|
2228 case ';':
|
|
|
2229 {
|
|
|
2230 /* Comment */
|
|
|
2231 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2232 QUIT;
|
|
|
2233 goto retry;
|
|
|
2234 }
|
|
|
2235 }
|
|
|
2236 }
|
|
|
2237
|
|
|
2238 #if 0
|
|
|
2239 static Lisp_Object
|
|
|
2240 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2241 {
|
|
|
2242 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b);
|
|
|
2243 }
|
|
|
2244 #endif
|
|
|
2245
|
|
|
2246 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2247 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2248 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2249 or dot followed by a non-number). To filter this stuff out,
|
|
|
2250 use read0(). */
|
|
|
2251
|
|
|
2252 static Lisp_Object
|
|
|
2253 read1 (Lisp_Object readcharfun)
|
|
|
2254 {
|
|
|
2255 Emchar c;
|
|
|
2256
|
|
|
2257 retry:
|
|
|
2258 c = reader_nextchar (readcharfun);
|
|
|
2259
|
|
|
2260 switch (c)
|
|
|
2261 {
|
|
|
2262 case '(':
|
|
|
2263 {
|
|
|
2264 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2265 /* if this is disabled, then other code in eval.c must be enabled */
|
|
|
2266 Emchar ch = reader_nextchar (readcharfun);
|
|
|
2267 switch (ch)
|
|
|
2268 {
|
|
|
2269 case '`':
|
|
|
2270 {
|
|
|
2271 Lisp_Object tem;
|
|
|
2272 int speccount = specpdl_depth ();
|
|
|
2273 ++old_backquote_flag;
|
|
|
2274 record_unwind_protect (backquote_unwind,
|
|
|
2275 make_opaque_ptr (&old_backquote_flag));
|
|
|
2276 tem = read0 (readcharfun);
|
|
|
2277 unbind_to (speccount, Qnil);
|
|
|
2278 ch = reader_nextchar (readcharfun);
|
|
|
2279 if (ch != ')')
|
|
|
2280 {
|
|
|
2281 unreadchar (readcharfun, ch);
|
|
|
2282 return Fsignal (Qinvalid_read_syntax,
|
|
|
2283 list1 (build_string
|
|
|
2284 ("Weird old-backquote syntax")));
|
|
|
2285 }
|
|
|
2286 return list2 (Qbacktick, tem);
|
|
|
2287 }
|
|
|
2288 case ',':
|
|
|
2289 {
|
|
|
2290 if (old_backquote_flag)
|
|
|
2291 {
|
|
|
2292 Lisp_Object tem, comma_type;
|
|
|
2293 ch = readchar (readcharfun);
|
|
|
2294 if (ch == '@')
|
|
|
2295 comma_type = Qcomma_at;
|
|
|
2296 else
|
|
|
2297 {
|
|
|
2298 if (ch >= 0)
|
|
|
2299 unreadchar (readcharfun, ch);
|
|
|
2300 comma_type = Qcomma;
|
|
|
2301 }
|
|
|
2302 tem = read0 (readcharfun);
|
|
|
2303 ch = reader_nextchar (readcharfun);
|
|
|
2304 if (ch != ')')
|
|
|
2305 {
|
|
|
2306 unreadchar (readcharfun, ch);
|
|
|
2307 return Fsignal (Qinvalid_read_syntax,
|
|
|
2308 list1 (build_string
|
|
|
2309 ("Weird old-backquote syntax")));
|
|
|
2310 }
|
|
|
2311 return list2 (comma_type, tem);
|
|
|
2312 }
|
|
|
2313 else
|
|
|
2314 {
|
|
|
2315 unreadchar (readcharfun, ch);
|
|
|
2316 #if 0
|
|
|
2317 return Fsignal (Qinvalid_read_syntax,
|
|
|
2318 list1 (build_string ("Comma outside of backquote")));
|
|
|
2319 #else
|
|
|
2320 /* #### - yuck....but this is reverse compatible. */
|
|
|
2321 /* mostly this is required by edebug, which does its own
|
|
|
2322 annotated reading. We need to have an annotated_read
|
|
|
2323 function that records (with markers) the buffer
|
|
|
2324 positions of the elements that make up lists, then that
|
|
|
2325 can be used in edebug and bytecomp and the check above
|
|
|
2326 can go back in. --Stig */
|
|
|
2327 break;
|
|
|
2328 #endif
|
|
|
2329 }
|
|
|
2330 }
|
|
|
2331 default:
|
|
|
2332 unreadchar (readcharfun, ch);
|
|
|
2333 } /* switch(ch) */
|
|
|
2334 #endif /* old backquote crap... */
|
|
|
2335 return read_list (readcharfun, ')', 1, 1);
|
|
|
2336 }
|
|
|
2337 case '[':
|
|
|
2338 return read_vector (readcharfun, ']');
|
|
|
2339
|
|
|
2340 case ')':
|
|
|
2341 case ']':
|
|
|
2342 /* #### - huh? these don't do what they seem... */
|
|
|
2343 return noseeum_cons (Qunbound, make_char (c));
|
|
|
2344 case '.':
|
|
|
2345 {
|
|
|
2346 #ifdef LISP_FLOAT_TYPE
|
|
|
2347 /* If a period is followed by a number, then we should read it
|
|
|
2348 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2349 pair.
|
|
|
2350 */
|
|
|
2351 c = readchar (readcharfun);
|
|
|
2352 unreadchar (readcharfun, c);
|
|
|
2353
|
|
|
2354 /* Can't use isdigit on Emchars */
|
|
|
2355 if (c < '0' || c > '9')
|
|
|
2356 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2357
|
|
|
2358 /* Note that read_atom will loop
|
|
|
2359 at least once, assuring that we will not try to UNREAD
|
|
|
2360 two characters in a row.
|
|
|
2361 (I think this doesn't matter anymore because there should
|
|
|
2362 be no more danger in unreading multiple characters) */
|
|
|
2363 return read_atom (readcharfun, '.', 0);
|
|
|
2364
|
|
|
2365 #else /* ! LISP_FLOAT_TYPE */
|
|
|
2366 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2367 #endif /* ! LISP_FLOAT_TYPE */
|
|
|
2368 }
|
|
|
2369
|
|
|
2370 case '#':
|
|
|
2371 {
|
|
|
2372 c = readchar (readcharfun);
|
|
|
2373 switch (c)
|
|
|
2374 {
|
|
|
2375 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2376 case '^':
|
|
|
2377 #endif
|
|
|
2378 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2379 case '&':
|
|
|
2380 #endif
|
|
|
2381 /* "#["-- byte-code constant syntax */
|
|
|
2382 /* purecons #[...] syntax */
|
|
|
2383 case '[': return read_compiled_function (readcharfun, ']'
|
|
|
2384 /*, purify_flag */ );
|
|
|
2385 /* "#:"-- gensym syntax */
|
|
|
2386 case ':': return read_atom (readcharfun, -1, 1);
|
|
|
2387 /* #'x => (function x) */
|
|
|
2388 case '\'': return list2 (Qfunction, read0 (readcharfun));
|
|
|
2389 #if 0
|
|
|
2390 /* RMS uses this syntax for fat-strings.
|
|
|
2391 If we use it for vectors, then obscure bugs happen.
|
|
|
2392 */
|
|
|
2393 /* "#(" -- Scheme/CL vector syntax */
|
|
|
2394 case '(': return read_vector (readcharfun, ')');
|
|
|
2395 #endif
|
|
|
2396 #if 0 /* FSFmacs */
|
|
|
2397 case '(':
|
|
|
2398 {
|
|
|
2399 Lisp_Object tmp;
|
|
|
2400 struct gcpro gcpro1;
|
|
|
2401
|
|
|
2402 /* Read the string itself. */
|
|
|
2403 tmp = read1 (readcharfun);
|
|
|
2404 if (!STRINGP (tmp))
|
|
|
2405 {
|
|
|
2406 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
|
2407 free_cons (XCONS (tmp));
|
|
|
2408 return Fsignal (Qinvalid_read_syntax,
|
|
|
2409 list1 (build_string ("#")));
|
|
|
2410 }
|
|
|
2411 GCPRO1 (tmp);
|
|
|
2412 /* Read the intervals and their properties. */
|
|
|
2413 while (1)
|
|
|
2414 {
|
|
|
2415 Lisp_Object beg, end, plist;
|
|
|
2416 Emchar ch;
|
|
|
2417 int invalid = 0;
|
|
|
2418
|
|
|
2419 beg = read1 (readcharfun);
|
|
|
2420 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2421 {
|
|
|
2422 ch = XCHAR (XCDR (beg));
|
|
|
2423 free_cons (XCONS (beg));
|
|
|
2424 if (ch == ')')
|
|
|
2425 break;
|
|
|
2426 else
|
|
|
2427 invalid = 1;
|
|
|
2428 }
|
|
|
2429 if (!invalid)
|
|
|
2430 {
|
|
|
2431 end = read1 (readcharfun);
|
|
|
2432 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2433 {
|
|
|
2434 free_cons (XCONS (end));
|
|
|
2435 invalid = 1;
|
|
|
2436 }
|
|
|
2437 }
|
|
|
2438 if (!invalid)
|
|
|
2439 {
|
|
|
2440 plist = read1 (readcharfun);
|
|
|
2441 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2442 {
|
|
|
2443 free_cons (XCONS (plist));
|
|
|
2444 invalid = 1;
|
|
|
2445 }
|
|
|
2446 }
|
|
|
2447 if (invalid)
|
|
|
2448 RETURN_UNGCPRO
|
|
|
2449 (Fsignal (Qinvalid_read_syntax,
|
|
|
2450 list2
|
|
|
2451 (build_string ("invalid string property list"),
|
|
|
2452 XCDR (plist))));
|
|
|
2453 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2454 }
|
|
|
2455 UNGCPRO;
|
|
|
2456 return tmp;
|
|
|
2457 }
|
|
|
2458 #endif /* 0 */
|
|
|
2459 case '@':
|
|
|
2460 {
|
|
|
2461 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2462 That's used in .elc files to skip over doc strings
|
|
|
2463 and function definitions. */
|
|
|
2464 int i, nskip = 0;
|
|
|
2465
|
|
|
2466 /* Read a decimal integer. */
|
|
|
2467 while ((c = readchar (readcharfun)) >= 0
|
|
|
2468 && c >= '0' && c <= '9')
|
|
|
2469 nskip = (10 * nskip) + (c - '0');
|
|
|
2470 if (c >= 0)
|
|
|
2471 unreadchar (readcharfun, c);
|
|
|
2472
|
|
|
2473 /* FSF has code here that maybe caches the skipped
|
|
|
2474 string. See above for why this is totally
|
|
|
2475 losing. We handle this differently. */
|
|
|
2476
|
|
|
2477 /* Skip that many characters. */
|
|
|
2478 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2479 c = readchar (readcharfun);
|
|
|
2480
|
|
|
2481 goto retry;
|
|
|
2482 }
|
|
|
2483 case '$': return Vload_file_name_internal;
|
|
|
2484 /* bit vectors */
|
|
|
2485 case '*': return read_bit_vector (readcharfun);
|
|
|
2486 /* #o10 => 8 -- octal constant syntax */
|
|
|
2487 case 'o': return read_integer (readcharfun, 8);
|
|
|
2488 /* #xdead => 57005 -- hex constant syntax */
|
|
|
2489 case 'x': return read_integer (readcharfun, 16);
|
|
|
2490 /* #b010 => 2 -- binary constant syntax */
|
|
|
2491 case 'b': return read_integer (readcharfun, 2);
|
|
|
2492 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
|
2493 case 's': return read_structure (readcharfun);
|
|
|
2494 case '<':
|
|
|
2495 {
|
|
|
2496 unreadchar (readcharfun, c);
|
|
|
2497 return Fsignal (Qinvalid_read_syntax,
|
|
|
2498 list1 (build_string ("Cannot read unreadable object")));
|
|
|
2499 }
|
|
|
2500 #ifdef FEATUREP_SYNTAX
|
|
|
2501 case '+':
|
|
|
2502 case '-':
|
|
|
2503 {
|
|
456
|
2504 Lisp_Object feature_exp, obj, tem;
|
|
428
|
2505 struct gcpro gcpro1, gcpro2;
|
|
|
2506
|
|
456
|
2507 feature_exp = read0(readcharfun);
|
|
428
|
2508 obj = read0(readcharfun);
|
|
|
2509
|
|
|
2510 /* the call to `featurep' may GC. */
|
|
456
|
2511 GCPRO2 (feature_exp, obj);
|
|
|
2512 tem = call1 (Qfeaturep, feature_exp);
|
|
428
|
2513 UNGCPRO;
|
|
|
2514
|
|
|
2515 if (c == '+' && NILP(tem)) goto retry;
|
|
|
2516 if (c == '-' && !NILP(tem)) goto retry;
|
|
|
2517 return obj;
|
|
|
2518 }
|
|
|
2519 #endif
|
|
|
2520 case '0': case '1': case '2': case '3': case '4':
|
|
|
2521 case '5': case '6': case '7': case '8': case '9':
|
|
|
2522 /* Reader forms that can reuse previously read objects. */
|
|
|
2523 {
|
|
|
2524 int n = 0;
|
|
|
2525 Lisp_Object found;
|
|
|
2526
|
|
|
2527 /* Using read_integer() here is impossible, because it
|
|
|
2528 chokes on `='. Using parse_integer() is too hard.
|
|
|
2529 So we simply read it in, and ignore overflows, which
|
|
|
2530 is safe. */
|
|
|
2531 while (c >= '0' && c <= '9')
|
|
|
2532 {
|
|
|
2533 n *= 10;
|
|
|
2534 n += c - '0';
|
|
|
2535 c = readchar (readcharfun);
|
|
|
2536 }
|
|
|
2537 found = assq_no_quit (make_int (n), Vread_objects);
|
|
|
2538 if (c == '=')
|
|
|
2539 {
|
|
|
2540 /* #n=object returns object, but associates it with
|
|
|
2541 n for #n#. */
|
|
|
2542 Lisp_Object obj;
|
|
|
2543 if (CONSP (found))
|
|
|
2544 return Fsignal (Qinvalid_read_syntax,
|
|
|
2545 list2 (build_translated_string
|
|
|
2546 ("Multiply defined symbol label"),
|
|
|
2547 make_int (n)));
|
|
|
2548 obj = read0 (readcharfun);
|
|
|
2549 Vread_objects = Fcons (Fcons (make_int (n), obj),
|
|
|
2550 Vread_objects);
|
|
|
2551 return obj;
|
|
|
2552 }
|
|
|
2553 else if (c == '#')
|
|
|
2554 {
|
|
|
2555 /* #n# returns a previously read object. */
|
|
|
2556 if (CONSP (found))
|
|
|
2557 return XCDR (found);
|
|
|
2558 else
|
|
|
2559 return Fsignal (Qinvalid_read_syntax,
|
|
|
2560 list2 (build_translated_string
|
|
|
2561 ("Undefined symbol label"),
|
|
|
2562 make_int (n)));
|
|
|
2563 }
|
|
|
2564 return Fsignal (Qinvalid_read_syntax,
|
|
|
2565 list1 (build_string ("#")));
|
|
|
2566 }
|
|
|
2567 default:
|
|
|
2568 {
|
|
|
2569 unreadchar (readcharfun, c);
|
|
|
2570 return Fsignal (Qinvalid_read_syntax,
|
|
|
2571 list1 (build_string ("#")));
|
|
|
2572 }
|
|
|
2573 }
|
|
|
2574 }
|
|
|
2575
|
|
|
2576 /* Quote */
|
|
|
2577 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2578
|
|
|
2579 #ifdef LISP_BACKQUOTES
|
|
|
2580 case '`':
|
|
|
2581 {
|
|
|
2582 Lisp_Object tem;
|
|
|
2583 int speccount = specpdl_depth ();
|
|
|
2584 ++new_backquote_flag;
|
|
|
2585 record_unwind_protect (backquote_unwind,
|
|
|
2586 make_opaque_ptr (&new_backquote_flag));
|
|
|
2587 tem = read0 (readcharfun);
|
|
|
2588 unbind_to (speccount, Qnil);
|
|
|
2589 return list2 (Qbackquote, tem);
|
|
|
2590 }
|
|
|
2591
|
|
|
2592 case ',':
|
|
|
2593 {
|
|
|
2594 if (new_backquote_flag)
|
|
|
2595 {
|
|
|
2596 Lisp_Object comma_type = Qnil;
|
|
|
2597 int ch = readchar (readcharfun);
|
|
|
2598
|
|
|
2599 if (ch == '@')
|
|
|
2600 comma_type = Qcomma_at;
|
|
|
2601 else if (ch == '.')
|
|
|
2602 comma_type = Qcomma_dot;
|
|
|
2603 else
|
|
|
2604 {
|
|
|
2605 if (ch >= 0)
|
|
|
2606 unreadchar (readcharfun, ch);
|
|
|
2607 comma_type = Qcomma;
|
|
|
2608 }
|
|
|
2609 return list2 (comma_type, read0 (readcharfun));
|
|
|
2610 }
|
|
|
2611 else
|
|
|
2612 {
|
|
|
2613 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2614 Thing(tm) is to signal an error here, because it's
|
|
|
2615 really invalid read syntax. Instead, this permits
|
|
|
2616 commas to begin symbols (unless they're inside
|
|
|
2617 backquotes). If an error is signalled here in the
|
|
|
2618 future, then commas should be invalid read syntax
|
|
|
2619 outside of backquotes anywhere they're found (i.e.
|
|
|
2620 they must be quoted in symbols) -- Stig */
|
|
|
2621 return read_atom (readcharfun, c, 0);
|
|
|
2622 }
|
|
|
2623 }
|
|
|
2624 #endif
|
|
|
2625
|
|
|
2626 case '?':
|
|
|
2627 {
|
|
|
2628 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2629 c = readchar (readcharfun);
|
|
|
2630 if (c < 0)
|
|
|
2631 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2632
|
|
|
2633 if (c == '\\')
|
|
|
2634 c = read_escape (readcharfun);
|
|
|
2635 return make_char (c);
|
|
|
2636 }
|
|
|
2637
|
|
|
2638 case '\"':
|
|
|
2639 {
|
|
|
2640 /* String */
|
|
|
2641 #ifdef I18N3
|
|
|
2642 /* #### If the input stream is translating, then the string
|
|
|
2643 should be marked as translatable by setting its
|
|
|
2644 `string-translatable' property to t. .el and .elc files
|
|
|
2645 normally are translating input streams. See Fgettext()
|
|
|
2646 and print_internal(). */
|
|
|
2647 #endif
|
|
|
2648 int cancel = 0;
|
|
|
2649
|
|
|
2650 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2651 while ((c = readchar (readcharfun)) >= 0
|
|
|
2652 && c != '\"')
|
|
|
2653 {
|
|
|
2654 if (c == '\\')
|
|
|
2655 c = read_escape (readcharfun);
|
|
|
2656 /* c is -1 if \ newline has just been seen */
|
|
|
2657 if (c == -1)
|
|
|
2658 {
|
|
|
2659 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2660 cancel = 1;
|
|
|
2661 }
|
|
|
2662 else
|
|
|
2663 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
2664 QUIT;
|
|
|
2665 }
|
|
|
2666 if (c < 0)
|
|
|
2667 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2668
|
|
|
2669 /* If purifying, and string starts with \ newline,
|
|
|
2670 return zero instead. This is for doc strings
|
|
|
2671 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2672 if (purify_flag && NILP (Vinternal_doc_file_name) && cancel)
|
|
|
2673 return Qzero;
|
|
|
2674
|
|
|
2675 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2676 return
|
|
|
2677 make_string
|
|
|
2678 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2679 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2680 }
|
|
|
2681
|
|
|
2682 default:
|
|
|
2683 {
|
|
|
2684 /* Ignore whitespace and control characters */
|
|
|
2685 if (c <= 040)
|
|
|
2686 goto retry;
|
|
|
2687 return read_atom (readcharfun, c, 0);
|
|
|
2688 }
|
|
|
2689 }
|
|
|
2690 }
|
|
|
2691
|
|
|
2692
|
|
|
2693
|
|
|
2694 #ifdef LISP_FLOAT_TYPE
|
|
|
2695
|
|
|
2696 #define LEAD_INT 1
|
|
|
2697 #define DOT_CHAR 2
|
|
|
2698 #define TRAIL_INT 4
|
|
|
2699 #define E_CHAR 8
|
|
|
2700 #define EXP_INT 16
|
|
|
2701
|
|
|
2702 int
|
|
442
|
2703 isfloat_string (const char *cp)
|
|
428
|
2704 {
|
|
|
2705 int state = 0;
|
|
442
|
2706 const Bufbyte *ucp = (const Bufbyte *) cp;
|
|
428
|
2707
|
|
|
2708 if (*ucp == '+' || *ucp == '-')
|
|
|
2709 ucp++;
|
|
|
2710
|
|
|
2711 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2712 {
|
|
|
2713 state |= LEAD_INT;
|
|
|
2714 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2715 ucp++;
|
|
|
2716 }
|
|
|
2717 if (*ucp == '.')
|
|
|
2718 {
|
|
|
2719 state |= DOT_CHAR;
|
|
|
2720 ucp++;
|
|
|
2721 }
|
|
|
2722 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2723 {
|
|
|
2724 state |= TRAIL_INT;
|
|
|
2725 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2726 ucp++;
|
|
|
2727 }
|
|
|
2728 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2729 {
|
|
|
2730 state |= E_CHAR;
|
|
|
2731 ucp++;
|
|
|
2732 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2733 ucp++;
|
|
|
2734 }
|
|
|
2735
|
|
|
2736 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2737 {
|
|
|
2738 state |= EXP_INT;
|
|
|
2739 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2740 ucp++;
|
|
|
2741 }
|
|
|
2742 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2743 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2744 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2745 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2746 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2747 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2748 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2749 }
|
|
|
2750 #endif /* LISP_FLOAT_TYPE */
|
|
|
2751
|
|
|
2752 static void *
|
|
|
2753 sequence_reader (Lisp_Object readcharfun,
|
|
|
2754 Emchar terminator,
|
|
|
2755 void *state,
|
|
|
2756 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2757 void *state, Charcount len))
|
|
|
2758 {
|
|
|
2759 Charcount len;
|
|
|
2760
|
|
|
2761 for (len = 0; ; len++)
|
|
|
2762 {
|
|
|
2763 Emchar ch;
|
|
|
2764
|
|
|
2765 QUIT;
|
|
|
2766 ch = reader_nextchar (readcharfun);
|
|
|
2767
|
|
|
2768 if (ch == terminator)
|
|
|
2769 return state;
|
|
|
2770 else
|
|
|
2771 unreadchar (readcharfun, ch);
|
|
|
2772 #ifdef FEATUREP_SYNTAX
|
|
|
2773 if (ch == ']')
|
|
442
|
2774 read_syntax_error ("\"]\" in a list");
|
|
428
|
2775 else if (ch == ')')
|
|
442
|
2776 read_syntax_error ("\")\" in a vector");
|
|
428
|
2777 #endif
|
|
|
2778 state = ((conser) (readcharfun, state, len));
|
|
|
2779 }
|
|
|
2780 }
|
|
|
2781
|
|
|
2782
|
|
|
2783 struct read_list_state
|
|
|
2784 {
|
|
|
2785 Lisp_Object head;
|
|
|
2786 Lisp_Object tail;
|
|
|
2787 int length;
|
|
|
2788 int allow_dotted_lists;
|
|
|
2789 Emchar terminator;
|
|
|
2790 };
|
|
|
2791
|
|
|
2792 static void *
|
|
|
2793 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2794 {
|
|
|
2795 struct read_list_state *s = (struct read_list_state *) state;
|
|
|
2796 Lisp_Object elt;
|
|
|
2797
|
|
|
2798 elt = read1 (readcharfun);
|
|
|
2799
|
|
|
2800 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2801 {
|
|
|
2802 Lisp_Object tem = elt;
|
|
|
2803 Emchar ch;
|
|
|
2804
|
|
|
2805 elt = XCDR (elt);
|
|
|
2806 free_cons (XCONS (tem));
|
|
|
2807 tem = Qnil;
|
|
|
2808 ch = XCHAR (elt);
|
|
|
2809 #ifdef FEATUREP_SYNTAX
|
|
|
2810 if (ch == s->terminator) /* deal with #+, #- reader macros */
|
|
|
2811 {
|
|
|
2812 unreadchar (readcharfun, s->terminator);
|
|
|
2813 goto done;
|
|
|
2814 }
|
|
|
2815 else if (ch == ']')
|
|
442
|
2816 read_syntax_error ("']' in a list");
|
|
428
|
2817 else if (ch == ')')
|
|
442
|
2818 read_syntax_error ("')' in a vector");
|
|
428
|
2819 else
|
|
|
2820 #endif
|
|
|
2821 if (ch != '.')
|
|
|
2822 signal_simple_error ("BUG! Internal reader error", elt);
|
|
|
2823 else if (!s->allow_dotted_lists)
|
|
442
|
2824 read_syntax_error ("\".\" in a vector");
|
|
428
|
2825 else
|
|
|
2826 {
|
|
|
2827 if (!NILP (s->tail))
|
|
|
2828 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2829 else
|
|
|
2830 s->head = read0 (readcharfun);
|
|
|
2831 elt = read1 (readcharfun);
|
|
|
2832 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2833 {
|
|
|
2834 ch = XCHAR (XCDR (elt));
|
|
|
2835 free_cons (XCONS (elt));
|
|
|
2836 if (ch == s->terminator)
|
|
|
2837 {
|
|
|
2838 unreadchar (readcharfun, s->terminator);
|
|
|
2839 goto done;
|
|
|
2840 }
|
|
|
2841 }
|
|
442
|
2842 read_syntax_error (". in wrong context");
|
|
428
|
2843 }
|
|
|
2844 }
|
|
|
2845
|
|
|
2846 #if 0 /* FSFmacs defun hack, or something ... */
|
|
|
2847 if (NILP (tail) && defun_hack && EQ (elt, Qdefun) && !read_pure)
|
|
|
2848 {
|
|
|
2849 record_unwind_protect (unreadpure, Qzero);
|
|
|
2850 read_pure = 1;
|
|
|
2851 }
|
|
|
2852 #endif
|
|
|
2853
|
|
|
2854 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2855 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2856 {
|
|
|
2857 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2858 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2859 else
|
|
|
2860 Vcurrent_compiled_function_annotation = elt;
|
|
|
2861 }
|
|
|
2862 #endif
|
|
|
2863
|
|
|
2864 elt = Fcons (elt, Qnil);
|
|
|
2865 if (!NILP (s->tail))
|
|
|
2866 XCDR (s->tail) = elt;
|
|
|
2867 else
|
|
|
2868 s->head = elt;
|
|
|
2869 s->tail = elt;
|
|
|
2870 done:
|
|
|
2871 s->length++;
|
|
|
2872 return s;
|
|
|
2873 }
|
|
|
2874
|
|
|
2875
|
|
|
2876 #if 0 /* FSFmacs defun hack */
|
|
|
2877 /* -1 for allow_dotted_lists means allow_dotted_lists and check
|
|
|
2878 for starting with defun and make structure pure. */
|
|
|
2879 #endif
|
|
|
2880
|
|
|
2881 static Lisp_Object
|
|
|
2882 read_list (Lisp_Object readcharfun,
|
|
|
2883 Emchar terminator,
|
|
|
2884 int allow_dotted_lists,
|
|
|
2885 int check_for_doc_references)
|
|
|
2886 {
|
|
|
2887 struct read_list_state s;
|
|
|
2888 struct gcpro gcpro1, gcpro2;
|
|
|
2889 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2890 Lisp_Object old_compiled_function_annotation =
|
|
|
2891 Vcurrent_compiled_function_annotation;
|
|
|
2892 #endif
|
|
|
2893
|
|
|
2894 s.head = Qnil;
|
|
|
2895 s.tail = Qnil;
|
|
|
2896 s.length = 0;
|
|
|
2897 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2898 s.terminator = terminator;
|
|
|
2899 GCPRO2 (s.head, s.tail);
|
|
|
2900
|
|
|
2901 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2902 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2903 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2904 #endif
|
|
|
2905
|
|
|
2906 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2907 {
|
|
|
2908 /* check now for any doc string references and record them
|
|
|
2909 for later. */
|
|
|
2910 Lisp_Object tail;
|
|
|
2911
|
|
|
2912 /* We might be dealing with an imperfect list so don't
|
|
|
2913 use LIST_LOOP */
|
|
|
2914 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2915 {
|
|
|
2916 Lisp_Object holding_cons = Qnil;
|
|
|
2917
|
|
|
2918 {
|
|
|
2919 Lisp_Object elem = XCAR (tail);
|
|
|
2920 /* elem might be (#$ . INT) ... */
|
|
|
2921 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2922 holding_cons = tail;
|
|
|
2923 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2924 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2925 `autoload' (autoload evaluates its arguments, while
|
|
|
2926 `defvar', `defun', etc. don't). */
|
|
|
2927 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2928 && CONSP (XCDR (elem)))
|
|
|
2929 {
|
|
|
2930 elem = XCAR (XCDR (elem));
|
|
|
2931 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2932 holding_cons = XCDR (XCAR (tail));
|
|
|
2933 }
|
|
|
2934 }
|
|
|
2935
|
|
|
2936 if (CONSP (holding_cons))
|
|
|
2937 {
|
|
|
2938 if (purify_flag)
|
|
|
2939 {
|
|
|
2940 if (NILP (Vinternal_doc_file_name))
|
|
|
2941 /* We have not yet called Snarf-documentation, so
|
|
|
2942 assume this file is described in the DOC file
|
|
|
2943 and Snarf-documentation will fill in the right
|
|
|
2944 value later. For now, replace the whole list
|
|
|
2945 with 0. */
|
|
|
2946 XCAR (holding_cons) = Qzero;
|
|
|
2947 else
|
|
|
2948 /* We have already called Snarf-documentation, so
|
|
|
2949 make a relative file name for this file, so it
|
|
|
2950 can be found properly in the installed Lisp
|
|
|
2951 directory. We don't use Fexpand_file_name
|
|
|
2952 because that would make the directory absolute
|
|
|
2953 now. */
|
|
|
2954 XCAR (XCAR (holding_cons)) =
|
|
|
2955 concat2 (build_string ("../lisp/"),
|
|
|
2956 Ffile_name_nondirectory
|
|
|
2957 (Vload_file_name_internal));
|
|
|
2958 }
|
|
|
2959 else
|
|
|
2960 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2961 and the string will be filled in properly in
|
|
|
2962 load_force_doc_string_unwind(). */
|
|
|
2963 Vload_force_doc_string_list =
|
|
|
2964 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2965 can modify it in-place. */
|
|
|
2966 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2967 }
|
|
|
2968 }
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 UNGCPRO;
|
|
|
2972 return s.head;
|
|
|
2973 }
|
|
|
2974
|
|
|
2975 static Lisp_Object
|
|
|
2976 read_vector (Lisp_Object readcharfun,
|
|
|
2977 Emchar terminator)
|
|
|
2978 {
|
|
|
2979 Lisp_Object tem;
|
|
|
2980 Lisp_Object *p;
|
|
|
2981 int len;
|
|
|
2982 int i;
|
|
|
2983 struct read_list_state s;
|
|
|
2984 struct gcpro gcpro1, gcpro2;
|
|
|
2985
|
|
|
2986 s.head = Qnil;
|
|
|
2987 s.tail = Qnil;
|
|
|
2988 s.length = 0;
|
|
|
2989 s.allow_dotted_lists = 0;
|
|
|
2990 GCPRO2 (s.head, s.tail);
|
|
|
2991
|
|
|
2992 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2993
|
|
|
2994 UNGCPRO;
|
|
|
2995 tem = s.head;
|
|
|
2996 len = XINT (Flength (tem));
|
|
|
2997
|
|
|
2998 #if 0 /* FSFmacs defun hack */
|
|
|
2999 if (read_pure)
|
|
|
3000 s.head = make_pure_vector (len, Qnil);
|
|
|
3001 else
|
|
|
3002 #endif
|
|
|
3003 s.head = make_vector (len, Qnil);
|
|
|
3004
|
|
|
3005 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]);
|
|
|
3006 i < len;
|
|
|
3007 i++, p++)
|
|
|
3008 {
|
|
440
|
3009 Lisp_Cons *otem = XCONS (tem);
|
|
428
|
3010 tem = Fcar (tem);
|
|
|
3011 *p = tem;
|
|
|
3012 tem = otem->cdr;
|
|
|
3013 free_cons (otem);
|
|
|
3014 }
|
|
|
3015 return s.head;
|
|
|
3016 }
|
|
|
3017
|
|
|
3018 static Lisp_Object
|
|
|
3019 read_compiled_function (Lisp_Object readcharfun, Emchar terminator)
|
|
|
3020 {
|
|
|
3021 /* Accept compiled functions at read-time so that we don't
|
|
|
3022 have to build them at load-time. */
|
|
|
3023 Lisp_Object stuff;
|
|
|
3024 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
3025 struct gcpro gcpro1;
|
|
|
3026 int len;
|
|
|
3027 int iii;
|
|
|
3028 int saw_a_doc_ref = 0;
|
|
|
3029
|
|
|
3030 /* Note: we tell read_list not to search for doc references
|
|
|
3031 because we need to handle the "doc reference" for the
|
|
|
3032 instructions and constants differently. */
|
|
|
3033 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
3034 len = XINT (Flength (stuff));
|
|
|
3035 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
3036 return
|
|
442
|
3037 continuable_read_syntax_error ("#[...] used with wrong number of elements");
|
|
428
|
3038
|
|
|
3039 for (iii = 0; CONSP (stuff); iii++)
|
|
|
3040 {
|
|
440
|
3041 Lisp_Cons *victim = XCONS (stuff);
|
|
428
|
3042 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
3043 if ((purify_flag || load_force_doc_strings)
|
|
|
3044 && CONSP (make_byte_code_args[iii])
|
|
|
3045 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
3046 {
|
|
|
3047 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
3048 {
|
|
|
3049 /* same as in read_list(). */
|
|
|
3050 if (NILP (Vinternal_doc_file_name))
|
|
|
3051 make_byte_code_args[iii] = Qzero;
|
|
|
3052 else
|
|
|
3053 XCAR (make_byte_code_args[iii]) =
|
|
|
3054 concat2 (build_string ("../lisp/"),
|
|
|
3055 Ffile_name_nondirectory
|
|
|
3056 (Vload_file_name_internal));
|
|
|
3057 }
|
|
|
3058 else
|
|
|
3059 saw_a_doc_ref = 1;
|
|
|
3060 }
|
|
|
3061 stuff = Fcdr (stuff);
|
|
|
3062 free_cons (victim);
|
|
|
3063 }
|
|
|
3064 GCPRO1 (make_byte_code_args[0]);
|
|
|
3065 gcpro1.nvars = len;
|
|
|
3066
|
|
|
3067 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
3068 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2]))
|
|
|
3069 ebolify_bytecode_constants (make_byte_code_args[2]);
|
|
|
3070
|
|
|
3071 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
3072 * value as our "read-pure" argument */
|
|
|
3073 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
|
3074 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20);
|
|
|
3075 if (saw_a_doc_ref)
|
|
|
3076 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
3077 UNGCPRO;
|
|
|
3078 return stuff;
|
|
|
3079 }
|
|
|
3080
|
|
|
3081
|
|
|
3082
|
|
|
3083 void
|
|
|
3084 init_lread (void)
|
|
|
3085 {
|
|
|
3086 Vvalues = Qnil;
|
|
|
3087
|
|
|
3088 load_in_progress = 0;
|
|
|
3089
|
|
|
3090 Vload_descriptor_list = Qnil;
|
|
|
3091
|
|
|
3092 /* kludge: locate-file does not work for a null load-path, even if
|
|
|
3093 the file name is absolute. */
|
|
|
3094
|
|
|
3095 Vload_path = Fcons (build_string (""), Qnil);
|
|
|
3096
|
|
|
3097 /* This used to get initialized in init_lread because all streams
|
|
|
3098 got closed when dumping occurs. This is no longer true --
|
|
|
3099 Vread_buffer_stream is a resizing output stream, and there is no
|
|
|
3100 reason to close it at dump-time.
|
|
|
3101
|
|
|
3102 Vread_buffer_stream is set to Qnil in vars_of_lread, and this
|
|
|
3103 will initialize it only once, at dump-time. */
|
|
|
3104 if (NILP (Vread_buffer_stream))
|
|
|
3105 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
|
3106
|
|
|
3107 Vload_force_doc_string_list = Qnil;
|
|
|
3108 }
|
|
|
3109
|
|
|
3110 void
|
|
|
3111 syms_of_lread (void)
|
|
|
3112 {
|
|
|
3113 DEFSUBR (Fread);
|
|
|
3114 DEFSUBR (Fread_from_string);
|
|
|
3115 DEFSUBR (Fload_internal);
|
|
|
3116 DEFSUBR (Flocate_file);
|
|
|
3117 DEFSUBR (Flocate_file_clear_hashing);
|
|
|
3118 DEFSUBR (Feval_buffer);
|
|
|
3119 DEFSUBR (Feval_region);
|
|
|
3120
|
|
|
3121 defsymbol (&Qstandard_input, "standard-input");
|
|
|
3122 defsymbol (&Qread_char, "read-char");
|
|
|
3123 defsymbol (&Qcurrent_load_list, "current-load-list");
|
|
|
3124 defsymbol (&Qload, "load");
|
|
|
3125 defsymbol (&Qload_file_name, "load-file-name");
|
|
|
3126 defsymbol (&Qfset, "fset");
|
|
|
3127
|
|
|
3128 #ifdef LISP_BACKQUOTES
|
|
|
3129 defsymbol (&Qbackquote, "backquote");
|
|
|
3130 defsymbol (&Qbacktick, "`");
|
|
|
3131 defsymbol (&Qcomma, ",");
|
|
|
3132 defsymbol (&Qcomma_at, ",@");
|
|
|
3133 defsymbol (&Qcomma_dot, ",.");
|
|
|
3134 #endif
|
|
|
3135
|
|
|
3136 defsymbol (&Qexists, "exists");
|
|
|
3137 defsymbol (&Qreadable, "readable");
|
|
|
3138 defsymbol (&Qwritable, "writable");
|
|
|
3139 defsymbol (&Qexecutable, "executable");
|
|
|
3140 }
|
|
|
3141
|
|
|
3142 void
|
|
|
3143 structure_type_create (void)
|
|
|
3144 {
|
|
|
3145 the_structure_type_dynarr = Dynarr_new (structure_type);
|
|
|
3146 }
|
|
|
3147
|
|
|
3148 void
|
|
|
3149 reinit_vars_of_lread (void)
|
|
|
3150 {
|
|
|
3151 Vread_buffer_stream = Qnil;
|
|
|
3152 staticpro_nodump (&Vread_buffer_stream);
|
|
|
3153 }
|
|
|
3154
|
|
|
3155 void
|
|
|
3156 vars_of_lread (void)
|
|
|
3157 {
|
|
|
3158 reinit_vars_of_lread ();
|
|
|
3159
|
|
|
3160 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
3161 List of values of all expressions which were read, evaluated and printed.
|
|
|
3162 Order is reverse chronological.
|
|
|
3163 */ );
|
|
|
3164
|
|
|
3165 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
3166 Stream for read to get input from.
|
|
|
3167 See documentation of `read' for possible values.
|
|
|
3168 */ );
|
|
|
3169 Vstandard_input = Qt;
|
|
|
3170
|
|
|
3171 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
3172 *List of directories to search for files to load.
|
|
|
3173 Each element is a string (directory name) or nil (try default directory).
|
|
|
3174
|
|
|
3175 Note that the elements of this list *may not* begin with "~", so you must
|
|
|
3176 call `expand-file-name' on them before adding them to this list.
|
|
|
3177
|
|
|
3178 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
3179 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
3180 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
3181 value for this variable by looking around in the file-system near the
|
|
|
3182 directory in which the XEmacs executable resides.
|
|
|
3183 */ );
|
|
|
3184 Vload_path = Qnil;
|
|
|
3185
|
|
|
3186 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
3187 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
3188
|
|
|
3189 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
3190 Non-nil iff inside of `load'.
|
|
|
3191 */ );
|
|
|
3192
|
|
|
3193 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
3194 An alist of expressions to be evalled when particular files are loaded.
|
|
|
3195 Each element looks like (FILENAME FORMS...).
|
|
|
3196 When `load' is run and the file-name argument is FILENAME,
|
|
|
3197 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
3198
|
|
|
3199 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
3200 with no directory specified, since that is how `load' is normally called.
|
|
|
3201 An error in FORMS does not undo the load,
|
|
|
3202 but does prevent execution of the rest of the FORMS.
|
|
|
3203 */ );
|
|
|
3204 Vafter_load_alist = Qnil;
|
|
|
3205
|
|
|
3206 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
3207 *Whether `load' should check whether the source is newer than the binary.
|
|
|
3208 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
3209 corresponding `.el' is newer, a warning message will be printed.
|
|
|
3210 */ );
|
|
|
3211 load_warn_when_source_newer = 0;
|
|
|
3212
|
|
|
3213 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
3214 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
3215 If this variable is true, then when `load' is called with a filename without
|
|
|
3216 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
3217 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
3218 no warning will be printed.
|
|
|
3219 */ );
|
|
|
3220 load_warn_when_source_only = 0;
|
|
|
3221
|
|
|
3222 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
3223 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
3224 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
3225 */ );
|
|
|
3226 load_ignore_elc_files = 0;
|
|
|
3227
|
|
|
3228 #ifdef LOADHIST
|
|
|
3229 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
3230 Alist mapping source file names to symbols and features.
|
|
|
3231 Each alist element is a list that starts with a file name,
|
|
|
3232 except for one element (optional) that starts with nil and describes
|
|
|
3233 definitions evaluated from buffers not visiting files.
|
|
|
3234 The remaining elements of each list are symbols defined as functions
|
|
|
3235 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
3236 */ );
|
|
|
3237 Vload_history = Qnil;
|
|
|
3238
|
|
|
3239 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
3240 Used for internal purposes by `load'.
|
|
|
3241 */ );
|
|
|
3242 Vcurrent_load_list = Qnil;
|
|
|
3243 #endif
|
|
|
3244
|
|
|
3245 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
3246 Full name of file being loaded by `load'.
|
|
|
3247 */ );
|
|
|
3248 Vload_file_name = Qnil;
|
|
|
3249
|
|
|
3250 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
3251 Function used by `load' and `eval-region' for reading expressions.
|
|
|
3252 The default is nil, which means use the function `read'.
|
|
|
3253 */ );
|
|
|
3254 Vload_read_function = Qnil;
|
|
|
3255
|
|
|
3256 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
3257 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
3258 This is useful when the file being loaded is a temporary copy.
|
|
|
3259 */ );
|
|
|
3260 load_force_doc_strings = 0;
|
|
|
3261
|
|
|
3262 /* See read_escape(). */
|
|
|
3263 #if 0
|
|
|
3264 /* Used to be named `puke-on-fsf-keys' */
|
|
|
3265 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes",
|
|
|
3266 &fail_on_bucky_bit_character_escapes /*
|
|
|
3267 Whether `read' should signal an error when it encounters unsupported
|
|
|
3268 character escape syntaxes or just read them incorrectly.
|
|
|
3269 */ );
|
|
|
3270 fail_on_bucky_bit_character_escapes = 0;
|
|
|
3271 #endif
|
|
|
3272
|
|
|
3273 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3274 with values saved when the image is dumped. */
|
|
|
3275 staticpro (&Vload_descriptor_list);
|
|
|
3276
|
|
|
3277 /* Initialized in init_lread. */
|
|
|
3278 staticpro (&Vload_force_doc_string_list);
|
|
|
3279
|
|
|
3280 Vload_file_name_internal = Qnil;
|
|
|
3281 staticpro (&Vload_file_name_internal);
|
|
|
3282
|
|
|
3283 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3284 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3285
|
|
|
3286 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3287 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3288 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3289 #endif
|
|
|
3290
|
|
|
3291 /* So that early-early stuff will work */
|
|
|
3292 Ffset (Qload, intern ("load-internal"));
|
|
|
3293
|
|
|
3294 #ifdef FEATUREP_SYNTAX
|
|
|
3295 defsymbol (&Qfeaturep, "featurep");
|
|
|
3296 Fprovide(intern("xemacs"));
|
|
|
3297 #ifdef INFODOCK
|
|
|
3298 Fprovide(intern("infodock"));
|
|
|
3299 #endif /* INFODOCK */
|
|
|
3300 #endif /* FEATUREP_SYNTAX */
|
|
|
3301
|
|
|
3302 #ifdef LISP_BACKQUOTES
|
|
|
3303 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3304 #endif
|
|
|
3305
|
|
|
3306 #ifdef I18N3
|
|
|
3307 Vfile_domain = Qnil;
|
|
|
3308 #endif
|
|
|
3309
|
|
|
3310 Vread_objects = Qnil;
|
|
|
3311 staticpro (&Vread_objects);
|
|
|
3312
|
|
|
3313 Vlocate_file_hash_table = make_lisp_hash_table (200,
|
|
|
3314 HASH_TABLE_NON_WEAK,
|
|
|
3315 HASH_TABLE_EQUAL);
|
|
|
3316 staticpro (&Vlocate_file_hash_table);
|
|
|
3317 #ifdef DEBUG_XEMACS
|
|
|
3318 symbol_value (XSYMBOL (intern ("Vlocate-file-hash-table")))
|
|
|
3319 = Vlocate_file_hash_table;
|
|
|
3320 #endif
|
|
|
3321 }
|
