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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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563
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223 signal_error (Qinvalid_read_syntax, string, Qunbound);
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428
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224 }
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225
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226 static Lisp_Object
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442
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227 continuable_read_syntax_error (const char *string)
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428
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228 {
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563
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229 return signal_continuable_error (Qinvalid_read_syntax, string, Qunbound);
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428
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230 }
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231
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232
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233 /* Handle unreading and rereading of characters. */
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234 static Emchar
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235 readchar (Lisp_Object readcharfun)
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236 {
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237 /* This function can GC */
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238
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239 if (BUFFERP (readcharfun))
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240 {
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241 Emchar c;
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242 struct buffer *b = XBUFFER (readcharfun);
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243
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244 if (!BUFFER_LIVE_P (b))
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563
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245 invalid_operation ("Reading from killed buffer", Qunbound);
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428
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246
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247 if (BUF_PT (b) >= BUF_ZV (b))
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248 return -1;
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249 c = BUF_FETCH_CHAR (b, BUF_PT (b));
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250 BUF_SET_PT (b, BUF_PT (b) + 1);
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251
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252 return c;
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253 }
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254 else if (LSTREAMP (readcharfun))
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255 {
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256 Emchar c = Lstream_get_emchar (XLSTREAM (readcharfun));
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257 #ifdef DEBUG_XEMACS /* testing Mule */
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258 static int testing_mule = 0; /* Change via debugger */
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444
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259 if (testing_mule)
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260 {
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261 if (c >= 0x20 && c <= 0x7E) stderr_out ("%c", c);
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262 else if (c == '\n') stderr_out ("\\n\n");
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263 else stderr_out ("\\%o ", c);
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264 }
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265 #endif /* testing Mule */
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428
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266 return c;
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267 }
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268 else if (MARKERP (readcharfun))
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269 {
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270 Emchar c;
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271 Bufpos mpos = marker_position (readcharfun);
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272 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
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273
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274 if (mpos >= BUF_ZV (inbuffer))
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275 return -1;
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276 c = BUF_FETCH_CHAR (inbuffer, mpos);
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277 set_marker_position (readcharfun, mpos + 1);
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278 return c;
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279 }
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280 else
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281 {
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282 Lisp_Object tem = call0 (readcharfun);
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283
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284 if (!CHAR_OR_CHAR_INTP (tem))
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285 return -1;
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286 return XCHAR_OR_CHAR_INT (tem);
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287 }
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288 }
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289
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290 /* Unread the character C in the way appropriate for the stream READCHARFUN.
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291 If the stream is a user function, call it with the char as argument. */
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292
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293 static void
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294 unreadchar (Lisp_Object readcharfun, Emchar c)
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295 {
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296 if (c == -1)
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297 /* Don't back up the pointer if we're unreading the end-of-input mark,
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298 since readchar didn't advance it when we read it. */
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299 ;
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300 else if (BUFFERP (readcharfun))
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301 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
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302 else if (LSTREAMP (readcharfun))
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303 {
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304 Lstream_unget_emchar (XLSTREAM (readcharfun), c);
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305 #ifdef DEBUG_XEMACS /* testing Mule */
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306 {
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307 static int testing_mule = 0; /* Set this using debugger */
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308 if (testing_mule)
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309 fprintf (stderr,
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310 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
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311 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
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312 }
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313 #endif
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314 }
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315 else if (MARKERP (readcharfun))
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316 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
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317 else
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318 call1 (readcharfun, make_char (c));
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319 }
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320
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321 static Lisp_Object read0 (Lisp_Object readcharfun);
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322 static Lisp_Object read1 (Lisp_Object readcharfun);
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323 /* allow_dotted_lists means that something like (foo bar . baz)
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324 is acceptable. If -1, means check for starting with defun
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325 and make structure pure. (not implemented, probably for very
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326 good reasons)
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327 */
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328 /*
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329 If check_for_doc_references, look for (#$ . INT) doc references
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330 in the list and record if load_force_doc_strings is non-zero.
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331 (Such doc references will be destroyed during the loadup phase
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332 by replacing with Qzero, because Snarf-documentation will fill
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333 them in again.)
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334
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335 WARNING: If you set this, you sure as hell better not call
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336 free_list() on the returned list here. */
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337
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338 static Lisp_Object read_list (Lisp_Object readcharfun,
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339 Emchar terminator,
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340 int allow_dotted_lists,
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341 int check_for_doc_references);
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342
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343 static void readevalloop (Lisp_Object readcharfun,
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344 Lisp_Object sourcefile,
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345 Lisp_Object (*evalfun) (Lisp_Object),
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346 int printflag);
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347
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348 static Lisp_Object
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349 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
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350 {
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351 Lstream_close (XLSTREAM (stream));
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352 if (--load_in_progress < 0)
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353 load_in_progress = 0;
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354 return Qnil;
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355 }
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356
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357 static Lisp_Object
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358 load_descriptor_unwind (Lisp_Object oldlist)
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359 {
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360 Vload_descriptor_list = oldlist;
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361 return Qnil;
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362 }
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363
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364 static Lisp_Object
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365 load_file_name_internal_unwind (Lisp_Object oldval)
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366 {
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367 Vload_file_name_internal = oldval;
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368 return Qnil;
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369 }
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370
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371 static Lisp_Object
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372 load_file_name_internal_the_purecopy_unwind (Lisp_Object oldval)
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373 {
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374 Vload_file_name_internal_the_purecopy = oldval;
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375 return Qnil;
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376 }
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377
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378 static Lisp_Object
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379 load_byte_code_version_unwind (Lisp_Object oldval)
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380 {
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381 load_byte_code_version = XINT (oldval);
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382 return Qnil;
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383 }
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384
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385 /* The plague is coming.
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386
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387 Ring around the rosy, pocket full of posy,
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388 Ashes ashes, they all fall down.
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389 */
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390 void
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391 ebolify_bytecode_constants (Lisp_Object vector)
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|
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392 {
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393 int len = XVECTOR_LENGTH (vector);
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394 int i;
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395
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396 for (i = 0; i < len; i++)
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397 {
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398 Lisp_Object el = XVECTOR_DATA (vector)[i];
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399
|
|
|
400 /* We don't check for `eq', `equal', and the others that have
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|
|
401 bytecode opcodes. This might lose if someone passes #'eq or
|
|
|
402 something to `funcall', but who would really do that? As
|
|
|
403 they say in law, we've made a "good-faith effort" to
|
|
|
404 unfuckify ourselves. And doing it this way avoids screwing
|
|
|
405 up args to `make-hash-table' and such. As it is, we have to
|
|
|
406 add an extra Ebola check in decode_weak_list_type(). --ben */
|
|
|
407 if (EQ (el, Qassoc)) el = Qold_assoc;
|
|
|
408 else if (EQ (el, Qdelq)) el = Qold_delq;
|
|
|
409 #if 0
|
|
|
410 /* I think this is a bad idea because it will probably mess
|
|
|
411 with keymap code. */
|
|
|
412 else if (EQ (el, Qdelete)) el = Qold_delete;
|
|
|
413 #endif
|
|
|
414 else if (EQ (el, Qrassq)) el = Qold_rassq;
|
|
|
415 else if (EQ (el, Qrassoc)) el = Qold_rassoc;
|
|
|
416
|
|
|
417 XVECTOR_DATA (vector)[i] = el;
|
|
|
418 }
|
|
|
419 }
|
|
|
420
|
|
|
421 static Lisp_Object
|
|
558
|
422 pas_de_holgazan_ici (int fd, Lisp_Object victim)
|
|
428
|
423 {
|
|
|
424 Lisp_Object tem;
|
|
|
425 EMACS_INT pos;
|
|
|
426
|
|
|
427 if (!INTP (XCDR (victim)))
|
|
563
|
428 invalid_byte_code ("Bogus doc string reference", victim);
|
|
428
|
429 pos = XINT (XCDR (victim));
|
|
|
430 if (pos < 0)
|
|
|
431 pos = -pos; /* kludge to mark a user variable */
|
|
|
432 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal);
|
|
|
433 if (!STRINGP (tem))
|
|
563
|
434 signal_error_1 (Qinvalid_byte_code, tem);
|
|
428
|
435 return tem;
|
|
|
436 }
|
|
|
437
|
|
|
438 static Lisp_Object
|
|
|
439 load_force_doc_string_unwind (Lisp_Object oldlist)
|
|
|
440 {
|
|
|
441 struct gcpro gcpro1;
|
|
|
442 Lisp_Object list = Vload_force_doc_string_list;
|
|
|
443 Lisp_Object tail;
|
|
|
444 int fd = XINT (XCAR (Vload_descriptor_list));
|
|
|
445
|
|
|
446 GCPRO1 (list);
|
|
|
447 /* restore the old value first just in case an error occurs. */
|
|
|
448 Vload_force_doc_string_list = oldlist;
|
|
|
449
|
|
|
450 LIST_LOOP (tail, list)
|
|
|
451 {
|
|
|
452 Lisp_Object john = Fcar (tail);
|
|
|
453 if (CONSP (john))
|
|
|
454 {
|
|
|
455 assert (CONSP (XCAR (john)));
|
|
|
456 assert (!purify_flag); /* should have been handled in read_list() */
|
|
558
|
457 XCAR (john) = pas_de_holgazan_ici (fd, XCAR (john));
|
|
428
|
458 }
|
|
|
459 else
|
|
|
460 {
|
|
|
461 Lisp_Object doc;
|
|
|
462
|
|
|
463 assert (COMPILED_FUNCTIONP (john));
|
|
|
464 if (CONSP (XCOMPILED_FUNCTION (john)->instructions))
|
|
|
465 {
|
|
|
466 struct gcpro ngcpro1;
|
|
558
|
467 Lisp_Object juan = (pas_de_holgazan_ici
|
|
428
|
468 (fd, XCOMPILED_FUNCTION (john)->instructions));
|
|
|
469 Lisp_Object ivan;
|
|
|
470
|
|
|
471 NGCPRO1 (juan);
|
|
|
472 ivan = Fread (juan);
|
|
|
473 if (!CONSP (ivan))
|
|
563
|
474 invalid_byte_code ("invalid lazy-loaded byte code", ivan);
|
|
428
|
475 XCOMPILED_FUNCTION (john)->instructions = XCAR (ivan);
|
|
|
476 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
477 if (XCOMPILED_FUNCTION (john)->flags.ebolified
|
|
|
478 && VECTORP (XCDR (ivan)))
|
|
|
479 ebolify_bytecode_constants (XCDR (ivan));
|
|
|
480 XCOMPILED_FUNCTION (john)->constants = XCDR (ivan);
|
|
|
481 NUNGCPRO;
|
|
|
482 }
|
|
|
483 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
484 if (CONSP (doc))
|
|
|
485 {
|
|
|
486 assert (!purify_flag); /* should have been handled in
|
|
|
487 read_compiled_function() */
|
|
558
|
488 doc = pas_de_holgazan_ici (fd, doc);
|
|
428
|
489 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
490 doc);
|
|
|
491 }
|
|
|
492 }
|
|
|
493 }
|
|
|
494
|
|
|
495 if (!NILP (list))
|
|
|
496 free_list (list);
|
|
|
497
|
|
|
498 UNGCPRO;
|
|
|
499 return Qnil;
|
|
|
500 }
|
|
|
501
|
|
|
502 /* Close all descriptors in use for Fload_internal.
|
|
|
503 This is used when starting a subprocess. */
|
|
|
504
|
|
|
505 void
|
|
|
506 close_load_descs (void)
|
|
|
507 {
|
|
|
508 Lisp_Object tail;
|
|
|
509 LIST_LOOP (tail, Vload_descriptor_list)
|
|
|
510 close (XINT (XCAR (tail)));
|
|
|
511 }
|
|
|
512
|
|
|
513 #ifdef I18N3
|
|
|
514 Lisp_Object Vfile_domain;
|
|
|
515
|
|
|
516 Lisp_Object
|
|
|
517 restore_file_domain (Lisp_Object val)
|
|
|
518 {
|
|
|
519 Vfile_domain = val;
|
|
|
520 return Qnil;
|
|
|
521 }
|
|
|
522 #endif /* I18N3 */
|
|
|
523
|
|
|
524 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /*
|
|
|
525 Execute a file of Lisp code named FILE; no coding-system frobbing.
|
|
|
526 This function is identical to `load' except for the handling of the
|
|
|
527 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule
|
|
|
528 support is not present, both functions are identical and ignore the
|
|
|
529 CODESYS and USED-CODESYS arguments.)
|
|
|
530
|
|
|
531 If support for Mule exists in this Emacs, the file is decoded
|
|
|
532 according to CODESYS; if omitted, no conversion happens. If
|
|
|
533 USED-CODESYS is non-nil, it should be a symbol, and the actual coding
|
|
|
534 system that was used for the decoding is stored into it. It will in
|
|
|
535 general be different from CODESYS if CODESYS specifies automatic
|
|
|
536 encoding detection or end-of-line detection.
|
|
|
537 */
|
|
444
|
538 (file, noerror, nomessage, nosuffix, codesys, used_codesys))
|
|
428
|
539 {
|
|
|
540 /* This function can GC */
|
|
|
541 int fd = -1;
|
|
|
542 int speccount = specpdl_depth ();
|
|
|
543 int source_only = 0;
|
|
|
544 Lisp_Object newer = Qnil;
|
|
|
545 Lisp_Object handler = Qnil;
|
|
|
546 Lisp_Object found = Qnil;
|
|
|
547 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
548 int reading_elc = 0;
|
|
|
549 int message_p = NILP (nomessage);
|
|
|
550 /*#ifdef DEBUG_XEMACS*/
|
|
|
551 static Lisp_Object last_file_loaded;
|
|
|
552 /*#endif*/
|
|
|
553 struct stat s1, s2;
|
|
|
554 GCPRO3 (file, newer, found);
|
|
|
555
|
|
|
556 CHECK_STRING (file);
|
|
|
557
|
|
|
558 /*#ifdef DEBUG_XEMACS*/
|
|
|
559 if (purify_flag && noninteractive)
|
|
|
560 {
|
|
|
561 message_p = 1;
|
|
|
562 last_file_loaded = file;
|
|
|
563 }
|
|
|
564 /*#endif / * DEBUG_XEMACS */
|
|
|
565
|
|
|
566 /* If file name is magic, call the handler. */
|
|
|
567 handler = Ffind_file_name_handler (file, Qload);
|
|
|
568 if (!NILP (handler))
|
|
444
|
569 RETURN_UNGCPRO (call5 (handler, Qload, file, noerror,
|
|
428
|
570 nomessage, nosuffix));
|
|
|
571
|
|
|
572 /* Do this after the handler to avoid
|
|
|
573 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
574 (Below here, we care only whether they are nil or not.) */
|
|
|
575 file = Fsubstitute_in_file_name (file);
|
|
|
576 #ifdef FILE_CODING
|
|
|
577 if (!NILP (used_codesys))
|
|
|
578 CHECK_SYMBOL (used_codesys);
|
|
|
579 #endif
|
|
|
580
|
|
|
581 /* Avoid weird lossage with null string as arg,
|
|
|
582 since it would try to load a directory as a Lisp file.
|
|
|
583 Unix truly sucks. */
|
|
|
584 if (XSTRING_LENGTH (file) > 0)
|
|
|
585 {
|
|
|
586 char *foundstr;
|
|
|
587 int foundlen;
|
|
|
588
|
|
|
589 fd = locate_file (Vload_path, file,
|
|
|
590 ((!NILP (nosuffix)) ? Qnil :
|
|
|
591 build_string (load_ignore_elc_files ? ".el:" :
|
|
|
592 ".elc:.el:")),
|
|
|
593 &found,
|
|
|
594 -1);
|
|
|
595
|
|
|
596 if (fd < 0)
|
|
|
597 {
|
|
444
|
598 if (NILP (noerror))
|
|
563
|
599 signal_error (Qfile_error, "Cannot open load file", file);
|
|
428
|
600 else
|
|
|
601 {
|
|
|
602 UNGCPRO;
|
|
|
603 return Qnil;
|
|
|
604 }
|
|
|
605 }
|
|
|
606
|
|
|
607 foundstr = (char *) alloca (XSTRING_LENGTH (found) + 1);
|
|
|
608 strcpy (foundstr, (char *) XSTRING_DATA (found));
|
|
|
609 foundlen = strlen (foundstr);
|
|
|
610
|
|
|
611 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
612 differ. --ben */
|
|
|
613 if (load_ignore_elc_files)
|
|
|
614 {
|
|
|
615 newer = Ffile_name_nondirectory (found);
|
|
|
616 }
|
|
|
617 else if (load_warn_when_source_newer &&
|
|
|
618 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
619 {
|
|
|
620 if (! fstat (fd, &s1)) /* can't fail, right? */
|
|
|
621 {
|
|
|
622 int result;
|
|
|
623 /* temporarily hack the 'c' off the end of the filename */
|
|
|
624 foundstr[foundlen - 1] = '\0';
|
|
442
|
625 result = xemacs_stat (foundstr, &s2);
|
|
428
|
626 if (result >= 0 &&
|
|
|
627 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
|
628 {
|
|
|
629 Lisp_Object newer_name = make_string ((Bufbyte *) foundstr,
|
|
|
630 foundlen - 1);
|
|
|
631 struct gcpro nngcpro1;
|
|
|
632 NNGCPRO1 (newer_name);
|
|
|
633 newer = Ffile_name_nondirectory (newer_name);
|
|
|
634 NNUNGCPRO;
|
|
|
635 }
|
|
|
636 /* put the 'c' back on (kludge-o-rama) */
|
|
|
637 foundstr[foundlen - 1] = 'c';
|
|
|
638 }
|
|
|
639 }
|
|
|
640 else if (load_warn_when_source_only &&
|
|
|
641 /* `found' ends in ".el" */
|
|
|
642 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
643 /* `file' does not end in ".el" */
|
|
|
644 memcmp (".el",
|
|
|
645 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
|
646 3))
|
|
|
647 {
|
|
|
648 source_only = 1;
|
|
|
649 }
|
|
|
650
|
|
|
651 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
652 reading_elc = 1;
|
|
|
653 }
|
|
|
654
|
|
|
655 #define PRINT_LOADING_MESSAGE(done) do { \
|
|
|
656 if (load_ignore_elc_files) \
|
|
|
657 { \
|
|
|
658 if (message_p) \
|
|
|
659 message ("Loading %s..." done, XSTRING_DATA (newer)); \
|
|
|
660 } \
|
|
|
661 else if (!NILP (newer)) \
|
|
|
662 message ("Loading %s..." done " (file %s is newer)", \
|
|
|
663 XSTRING_DATA (file), \
|
|
|
664 XSTRING_DATA (newer)); \
|
|
|
665 else if (source_only) \
|
|
|
666 message ("Loading %s..." done " (file %s.elc does not exist)", \
|
|
|
667 XSTRING_DATA (file), \
|
|
|
668 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
669 else if (message_p) \
|
|
|
670 message ("Loading %s..." done, XSTRING_DATA (file)); \
|
|
|
671 } while (0)
|
|
|
672
|
|
|
673 PRINT_LOADING_MESSAGE ("");
|
|
|
674
|
|
|
675 {
|
|
|
676 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
677 Lisp_Object lispstream = Qnil;
|
|
442
|
678 const int block_size = 8192;
|
|
428
|
679 struct gcpro ngcpro1;
|
|
|
680
|
|
|
681 NGCPRO1 (lispstream);
|
|
|
682 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
683 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
684 files aren't really all that big. */
|
|
|
685 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
686 block_size);
|
|
|
687 #ifdef FILE_CODING
|
|
|
688 lispstream = make_decoding_input_stream
|
|
|
689 (XLSTREAM (lispstream), Fget_coding_system (codesys));
|
|
|
690 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
691 block_size);
|
|
|
692 #endif
|
|
|
693 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
|
694 record_unwind_protect (load_unwind, lispstream);
|
|
|
695 record_unwind_protect (load_descriptor_unwind, Vload_descriptor_list);
|
|
|
696 record_unwind_protect (load_file_name_internal_unwind,
|
|
|
697 Vload_file_name_internal);
|
|
|
698 record_unwind_protect (load_file_name_internal_the_purecopy_unwind,
|
|
|
699 Vload_file_name_internal_the_purecopy);
|
|
|
700 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
701 Vload_force_doc_string_list);
|
|
|
702 Vload_file_name_internal = found;
|
|
|
703 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
704 specbind (Qload_file_name, found);
|
|
|
705 Vload_descriptor_list = Fcons (make_int (fd), Vload_descriptor_list);
|
|
|
706 Vload_force_doc_string_list = Qnil;
|
|
|
707 #ifdef I18N3
|
|
|
708 record_unwind_protect (restore_file_domain, Vfile_domain);
|
|
|
709 Vfile_domain = Qnil; /* set it to nil; a call to #'domain will set it. */
|
|
|
710 #endif
|
|
|
711 load_in_progress++;
|
|
|
712
|
|
|
713 /* Now determine what sort of ELC file we're reading in. */
|
|
|
714 record_unwind_protect (load_byte_code_version_unwind,
|
|
|
715 make_int (load_byte_code_version));
|
|
|
716 if (reading_elc)
|
|
|
717 {
|
|
|
718 char elc_header[8];
|
|
|
719 int num_read;
|
|
|
720
|
|
|
721 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8);
|
|
|
722 if (num_read < 8
|
|
|
723 || strncmp (elc_header, ";ELC", 4))
|
|
|
724 {
|
|
|
725 /* Huh? Probably not a valid ELC file. */
|
|
|
726 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
727 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read);
|
|
|
728 }
|
|
|
729 else
|
|
|
730 load_byte_code_version = elc_header[4];
|
|
|
731 }
|
|
|
732 else
|
|
|
733 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
734
|
|
|
735 readevalloop (lispstream, file, Feval, 0);
|
|
|
736 #ifdef FILE_CODING
|
|
|
737 if (!NILP (used_codesys))
|
|
|
738 Fset (used_codesys,
|
|
|
739 XCODING_SYSTEM_NAME
|
|
|
740 (decoding_stream_coding_system (XLSTREAM (lispstream))));
|
|
|
741 #endif
|
|
|
742 unbind_to (speccount, Qnil);
|
|
|
743
|
|
|
744 NUNGCPRO;
|
|
|
745 }
|
|
|
746
|
|
|
747 {
|
|
|
748 Lisp_Object tem;
|
|
|
749 /* #### Disgusting kludge */
|
|
|
750 /* Run any load-hooks for this file. */
|
|
|
751 /* #### An even more disgusting kludge. There is horrible code */
|
|
|
752 /* that is relying on the fact that dumped lisp files are found */
|
|
|
753 /* via `load-path' search. */
|
|
|
754 Lisp_Object name = file;
|
|
|
755
|
|
|
756 if (!NILP(Ffile_name_absolute_p(file)))
|
|
|
757 {
|
|
|
758 name = Ffile_name_nondirectory(file);
|
|
|
759 }
|
|
|
760
|
|
|
761 {
|
|
|
762 struct gcpro ngcpro1;
|
|
|
763
|
|
|
764 NGCPRO1 (name);
|
|
|
765 tem = Fassoc (name, Vafter_load_alist);
|
|
|
766 NUNGCPRO;
|
|
|
767 }
|
|
|
768 if (!NILP (tem))
|
|
|
769 {
|
|
|
770 struct gcpro ngcpro1;
|
|
|
771
|
|
|
772 NGCPRO1 (tem);
|
|
|
773 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
774 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
775 Feval (tem);
|
|
|
776 NUNGCPRO;
|
|
|
777 }
|
|
|
778 }
|
|
|
779
|
|
|
780 /*#ifdef DEBUG_XEMACS*/
|
|
|
781 if (purify_flag && noninteractive)
|
|
|
782 {
|
|
|
783 if (!EQ (last_file_loaded, file))
|
|
|
784 message ("Loading %s ...done", XSTRING_DATA (file));
|
|
|
785 }
|
|
|
786 /*#endif / * DEBUG_XEMACS */
|
|
|
787
|
|
|
788 if (!noninteractive)
|
|
|
789 PRINT_LOADING_MESSAGE ("done");
|
|
|
790
|
|
|
791 UNGCPRO;
|
|
|
792 return Qt;
|
|
|
793 }
|
|
|
794
|
|
|
795
|
|
|
796 /* ------------------------------- */
|
|
|
797 /* locate_file */
|
|
|
798 /* ------------------------------- */
|
|
|
799
|
|
|
800 static int
|
|
|
801 decode_mode_1 (Lisp_Object mode)
|
|
|
802 {
|
|
|
803 if (EQ (mode, Qexists))
|
|
|
804 return F_OK;
|
|
|
805 else if (EQ (mode, Qexecutable))
|
|
|
806 return X_OK;
|
|
|
807 else if (EQ (mode, Qwritable))
|
|
|
808 return W_OK;
|
|
|
809 else if (EQ (mode, Qreadable))
|
|
|
810 return R_OK;
|
|
|
811 else if (INTP (mode))
|
|
|
812 {
|
|
|
813 check_int_range (XINT (mode), 0, 7);
|
|
|
814 return XINT (mode);
|
|
|
815 }
|
|
|
816 else
|
|
563
|
817 invalid_argument ("Invalid value", mode);
|
|
428
|
818 return 0; /* unreached */
|
|
|
819 }
|
|
|
820
|
|
|
821 static int
|
|
|
822 decode_mode (Lisp_Object mode)
|
|
|
823 {
|
|
|
824 if (NILP (mode))
|
|
|
825 return R_OK;
|
|
|
826 else if (CONSP (mode))
|
|
|
827 {
|
|
|
828 Lisp_Object tail;
|
|
|
829 int mask = 0;
|
|
|
830 EXTERNAL_LIST_LOOP (tail, mode)
|
|
|
831 mask |= decode_mode_1 (XCAR (tail));
|
|
|
832 return mask;
|
|
|
833 }
|
|
|
834 else
|
|
|
835 return decode_mode_1 (mode);
|
|
|
836 }
|
|
|
837
|
|
|
838 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /*
|
|
|
839 Search for FILENAME through PATH-LIST.
|
|
|
840
|
|
|
841 If SUFFIXES is non-nil, it should be a list of suffixes to append to
|
|
|
842 file name when searching.
|
|
|
843
|
|
|
844 If MODE is non-nil, it should be a symbol or a list of symbol representing
|
|
|
845 requirements. Allowed symbols are `exists', `executable', `writable', and
|
|
|
846 `readable'. If MODE is nil, it defaults to `readable'.
|
|
|
847
|
|
|
848 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
849 in order to speed things up. It tries valiantly to not get confused in
|
|
|
850 the face of a changing and unpredictable environment, but can occasionally
|
|
|
851 get tripped up. In this case, you will have to call
|
|
|
852 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
853 for details.
|
|
|
854 */
|
|
|
855 (filename, path_list, suffixes, mode))
|
|
|
856 {
|
|
|
857 /* This function can GC */
|
|
|
858 Lisp_Object tp;
|
|
|
859
|
|
|
860 CHECK_STRING (filename);
|
|
|
861
|
|
|
862 if (LISTP (suffixes))
|
|
|
863 {
|
|
|
864 Lisp_Object tail;
|
|
|
865 EXTERNAL_LIST_LOOP (tail, suffixes)
|
|
|
866 CHECK_STRING (XCAR (tail));
|
|
|
867 }
|
|
|
868 else
|
|
|
869 CHECK_STRING (suffixes);
|
|
|
870
|
|
|
871 locate_file (path_list, filename, suffixes, &tp, decode_mode (mode));
|
|
|
872 return tp;
|
|
|
873 }
|
|
|
874
|
|
|
875 /* Recalculate the hash table for the given string. DIRECTORY should
|
|
|
876 better have been through Fexpand_file_name() by now. */
|
|
|
877
|
|
|
878 static Lisp_Object
|
|
|
879 locate_file_refresh_hashing (Lisp_Object directory)
|
|
|
880 {
|
|
|
881 Lisp_Object hash =
|
|
|
882 make_directory_hash_table ((char *) XSTRING_DATA (directory));
|
|
|
883
|
|
|
884 if (!NILP (hash))
|
|
|
885 Fputhash (directory, hash, Vlocate_file_hash_table);
|
|
|
886 return hash;
|
|
|
887 }
|
|
|
888
|
|
|
889 /* find the hash table for the given directory, recalculating if necessary */
|
|
|
890
|
|
|
891 static Lisp_Object
|
|
|
892 locate_file_find_directory_hash_table (Lisp_Object directory)
|
|
|
893 {
|
|
|
894 Lisp_Object hash = Fgethash (directory, Vlocate_file_hash_table, Qnil);
|
|
|
895 if (NILP (hash))
|
|
|
896 return locate_file_refresh_hashing (directory);
|
|
|
897 else
|
|
|
898 return hash;
|
|
|
899 }
|
|
|
900
|
|
|
901 /* The SUFFIXES argument in any of the locate_file* functions can be
|
|
|
902 nil, a list, or a string (for backward compatibility), with the
|
|
|
903 following semantics:
|
|
|
904
|
|
|
905 a) nil - no suffix, just search for file name intact
|
|
|
906 (semantically different from "empty suffix list", which
|
|
|
907 would be meaningless.)
|
|
|
908 b) list - list of suffixes to append to file name. Each of these
|
|
|
909 must be a string.
|
|
|
910 c) string - colon-separated suffixes to append to file name (backward
|
|
|
911 compatibility).
|
|
|
912
|
|
|
913 All of this got hairy, so I decided to use a mapper. Calling a
|
|
|
914 function for each suffix shouldn't slow things down, since
|
|
|
915 locate_file is rarely called with enough suffixes for funcalls to
|
|
|
916 make any difference. */
|
|
|
917
|
|
|
918 /* Map FUN over SUFFIXES, as described above. FUN will be called with a
|
|
|
919 char * containing the current file name, and ARG. Mapping stops when
|
|
|
920 FUN returns non-zero. */
|
|
|
921 static void
|
|
|
922 locate_file_map_suffixes (Lisp_Object filename, Lisp_Object suffixes,
|
|
|
923 int (*fun) (char *, void *),
|
|
|
924 void *arg)
|
|
|
925 {
|
|
|
926 /* This function can GC */
|
|
|
927 char *fn;
|
|
|
928 int fn_len, max;
|
|
|
929
|
|
|
930 /* Calculate maximum size of any filename made from
|
|
|
931 this path element/specified file name and any possible suffix. */
|
|
|
932 if (CONSP (suffixes))
|
|
|
933 {
|
|
|
934 /* We must traverse the list, so why not do it right. */
|
|
|
935 Lisp_Object tail;
|
|
|
936 max = 0;
|
|
|
937 LIST_LOOP (tail, suffixes)
|
|
|
938 {
|
|
|
939 if (XSTRING_LENGTH (XCAR (tail)) > max)
|
|
|
940 max = XSTRING_LENGTH (XCAR (tail));
|
|
|
941 }
|
|
|
942 }
|
|
|
943 else if (NILP (suffixes))
|
|
|
944 max = 0;
|
|
|
945 else
|
|
|
946 /* Just take the easy way out */
|
|
|
947 max = XSTRING_LENGTH (suffixes);
|
|
|
948
|
|
|
949 fn_len = XSTRING_LENGTH (filename);
|
|
|
950 fn = (char *) alloca (max + fn_len + 1);
|
|
|
951 memcpy (fn, (char *) XSTRING_DATA (filename), fn_len);
|
|
|
952
|
|
|
953 /* Loop over suffixes. */
|
|
|
954 if (!STRINGP (suffixes))
|
|
|
955 {
|
|
|
956 if (NILP (suffixes))
|
|
|
957 {
|
|
|
958 /* Case a) discussed in the comment above. */
|
|
|
959 fn[fn_len] = 0;
|
|
|
960 if ((*fun) (fn, arg))
|
|
|
961 return;
|
|
|
962 }
|
|
|
963 else
|
|
|
964 {
|
|
|
965 /* Case b) */
|
|
|
966 Lisp_Object tail;
|
|
|
967 LIST_LOOP (tail, suffixes)
|
|
|
968 {
|
|
|
969 memcpy (fn + fn_len, XSTRING_DATA (XCAR (tail)),
|
|
|
970 XSTRING_LENGTH (XCAR (tail)));
|
|
|
971 fn[fn_len + XSTRING_LENGTH (XCAR (tail))] = 0;
|
|
|
972 if ((*fun) (fn, arg))
|
|
|
973 return;
|
|
|
974 }
|
|
|
975 }
|
|
|
976 }
|
|
|
977 else
|
|
|
978 {
|
|
|
979 /* Case c) */
|
|
442
|
980 const char *nsuffix = (const char *) XSTRING_DATA (suffixes);
|
|
428
|
981
|
|
|
982 while (1)
|
|
|
983 {
|
|
|
984 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
442
|
985 int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix);
|
|
428
|
986
|
|
|
987 /* Concatenate path element/specified name with the suffix. */
|
|
|
988 strncpy (fn + fn_len, nsuffix, lsuffix);
|
|
|
989 fn[fn_len + lsuffix] = 0;
|
|
|
990
|
|
|
991 if ((*fun) (fn, arg))
|
|
|
992 return;
|
|
|
993
|
|
|
994 /* Advance to next suffix. */
|
|
|
995 if (esuffix == 0)
|
|
|
996 break;
|
|
|
997 nsuffix += lsuffix + 1;
|
|
|
998 }
|
|
|
999 }
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 struct locate_file_in_directory_mapper_closure {
|
|
|
1003 int fd;
|
|
|
1004 Lisp_Object *storeptr;
|
|
|
1005 int mode;
|
|
|
1006 };
|
|
|
1007
|
|
|
1008 static int
|
|
|
1009 locate_file_in_directory_mapper (char *fn, void *arg)
|
|
|
1010 {
|
|
|
1011 struct locate_file_in_directory_mapper_closure *closure =
|
|
|
1012 (struct locate_file_in_directory_mapper_closure *)arg;
|
|
|
1013 struct stat st;
|
|
|
1014
|
|
|
1015 /* Ignore file if it's a directory. */
|
|
442
|
1016 if (xemacs_stat (fn, &st) >= 0
|
|
428
|
1017 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
1018 {
|
|
|
1019 /* Check that we can access or open it. */
|
|
|
1020 if (closure->mode >= 0)
|
|
|
1021 closure->fd = access (fn, closure->mode);
|
|
|
1022 else
|
|
|
1023 closure->fd = open (fn, O_RDONLY | OPEN_BINARY, 0);
|
|
|
1024
|
|
|
1025 if (closure->fd >= 0)
|
|
|
1026 {
|
|
|
1027 /* We succeeded; return this descriptor and filename. */
|
|
|
1028 if (closure->storeptr)
|
|
|
1029 *closure->storeptr = build_string (fn);
|
|
|
1030
|
|
442
|
1031 #ifndef WIN32_NATIVE
|
|
428
|
1032 /* If we actually opened the file, set close-on-exec flag
|
|
|
1033 on the new descriptor so that subprocesses can't whack
|
|
|
1034 at it. */
|
|
|
1035 if (closure->mode < 0)
|
|
|
1036 (void) fcntl (closure->fd, F_SETFD, FD_CLOEXEC);
|
|
|
1037 #endif
|
|
|
1038
|
|
|
1039 return 1;
|
|
|
1040 }
|
|
|
1041 }
|
|
|
1042 /* Keep mapping. */
|
|
|
1043 return 0;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046
|
|
|
1047 /* look for STR in PATH, optionally adding SUFFIXES. DIRECTORY need
|
|
|
1048 not have been expanded. */
|
|
|
1049
|
|
|
1050 static int
|
|
|
1051 locate_file_in_directory (Lisp_Object directory, Lisp_Object str,
|
|
|
1052 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1053 int mode)
|
|
|
1054 {
|
|
|
1055 /* This function can GC */
|
|
|
1056 struct locate_file_in_directory_mapper_closure closure;
|
|
|
1057 Lisp_Object filename = Qnil;
|
|
|
1058 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1059
|
|
|
1060 GCPRO3 (directory, str, filename);
|
|
|
1061
|
|
|
1062 filename = Fexpand_file_name (str, directory);
|
|
|
1063 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
1064 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
1065 /* Of course, this could conceivably lose if luser sets
|
|
|
1066 default-directory to be something non-absolute ... */
|
|
|
1067 {
|
|
|
1068 if (NILP (filename))
|
|
|
1069 /* NIL means current directory */
|
|
|
1070 filename = current_buffer->directory;
|
|
|
1071 else
|
|
|
1072 filename = Fexpand_file_name (filename,
|
|
|
1073 current_buffer->directory);
|
|
|
1074 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
1075 {
|
|
|
1076 /* Give up on this directory! */
|
|
|
1077 UNGCPRO;
|
|
|
1078 return -1;
|
|
|
1079 }
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 closure.fd = -1;
|
|
|
1083 closure.storeptr = storeptr;
|
|
|
1084 closure.mode = mode;
|
|
|
1085
|
|
|
1086 locate_file_map_suffixes (filename, suffixes, locate_file_in_directory_mapper,
|
|
|
1087 &closure);
|
|
|
1088
|
|
|
1089 UNGCPRO;
|
|
|
1090 return closure.fd;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
1094
|
|
|
1095 static int
|
|
|
1096 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
1097 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1098 int mode)
|
|
|
1099 {
|
|
|
1100 /* This function can GC */
|
|
|
1101 int absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
1102
|
|
|
1103 EXTERNAL_LIST_LOOP (path, path)
|
|
|
1104 {
|
|
|
1105 int val = locate_file_in_directory (XCAR (path), str, suffixes, storeptr,
|
|
|
1106 mode);
|
|
|
1107 if (val >= 0)
|
|
|
1108 return val;
|
|
|
1109 if (absolute)
|
|
|
1110 break;
|
|
|
1111 }
|
|
|
1112 return -1;
|
|
|
1113 }
|
|
|
1114
|
|
|
1115 static int
|
|
|
1116 locate_file_construct_suffixed_files_mapper (char *fn, void *arg)
|
|
|
1117 {
|
|
|
1118 Lisp_Object *tail = (Lisp_Object *)arg;
|
|
|
1119 *tail = Fcons (build_string (fn), *tail);
|
|
|
1120 return 0;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 /* Construct a list of all files to search for.
|
|
|
1124 It makes sense to have this despite locate_file_map_suffixes()
|
|
|
1125 because we need Lisp strings to access the hash-table, and it would
|
|
|
1126 be inefficient to create them on the fly, again and again for each
|
|
|
1127 path component. See locate_file(). */
|
|
|
1128
|
|
|
1129 static Lisp_Object
|
|
|
1130 locate_file_construct_suffixed_files (Lisp_Object filename,
|
|
|
1131 Lisp_Object suffixes)
|
|
|
1132 {
|
|
|
1133 Lisp_Object tail = Qnil;
|
|
|
1134 struct gcpro gcpro1;
|
|
|
1135 GCPRO1 (tail);
|
|
|
1136
|
|
|
1137 locate_file_map_suffixes (filename, suffixes,
|
|
|
1138 locate_file_construct_suffixed_files_mapper,
|
|
|
1139 &tail);
|
|
|
1140
|
|
|
1141 UNGCPRO;
|
|
|
1142 return Fnreverse (tail);
|
|
|
1143 }
|
|
|
1144
|
|
|
1145 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /*
|
|
|
1146 Clear the hash records for the specified list of directories.
|
|
|
1147 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1148 track the following environmental changes:
|
|
|
1149
|
|
|
1150 -- changes of any sort to the list of directories to be searched.
|
|
|
1151 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1152 directories in the list.
|
|
|
1153 -- byte-compilation of a .el file into a .elc file.
|
|
|
1154
|
|
|
1155 `locate-file' will primarily get confused if you add a file that shadows
|
|
|
1156 \(i.e. has the same name as) another file further down in the directory list.
|
|
|
1157 In this case, you must call `locate-file-clear-hashing'.
|
|
|
1158
|
|
|
1159 If PATH is t, it means to fully clear all the accumulated hashes. This
|
|
|
1160 can be used if the internal tables grow too large, or when dumping.
|
|
|
1161 */
|
|
|
1162 (path))
|
|
|
1163 {
|
|
|
1164 if (EQ (path, Qt))
|
|
|
1165 Fclrhash (Vlocate_file_hash_table);
|
|
|
1166 else
|
|
|
1167 {
|
|
|
1168 Lisp_Object pathtail;
|
|
|
1169 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1170 {
|
|
|
1171 Lisp_Object pathel = Fexpand_file_name (XCAR (pathtail), Qnil);
|
|
|
1172 Fremhash (pathel, Vlocate_file_hash_table);
|
|
|
1173 }
|
|
|
1174 }
|
|
|
1175 return Qnil;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 /* Search for a file whose name is STR, looking in directories
|
|
|
1179 in the Lisp list PATH, and trying suffixes from SUFFIXES.
|
|
|
1180 SUFFIXES is a list of possible suffixes, or (for backward
|
|
|
1181 compatibility) a string containing possible suffixes separated by
|
|
|
1182 colons.
|
|
|
1183 On success, returns a file descriptor. On failure, returns -1.
|
|
|
1184
|
|
|
1185 MODE nonnegative means don't open the files,
|
|
|
1186 just look for one for which access(file,MODE) succeeds. In this case,
|
|
|
1187 returns 1 on success.
|
|
|
1188
|
|
|
1189 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
1190 the file actually found should be stored as a Lisp string.
|
|
|
1191 Nil is stored there on failure.
|
|
|
1192
|
|
|
1193 Called openp() in FSFmacs. */
|
|
|
1194
|
|
|
1195 int
|
|
|
1196 locate_file (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes,
|
|
|
1197 Lisp_Object *storeptr, int mode)
|
|
|
1198 {
|
|
|
1199 /* This function can GC */
|
|
|
1200 Lisp_Object suffixtab = Qnil;
|
|
|
1201 Lisp_Object pathtail, pathel_expanded;
|
|
|
1202 int val;
|
|
|
1203 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
1204
|
|
|
1205 if (storeptr)
|
|
|
1206 *storeptr = Qnil;
|
|
|
1207
|
|
|
1208 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
1209 unless some caller has fucked up. There are known instances that
|
|
|
1210 call us with build_string("foo:bar") as SUFFIXES, though. */
|
|
|
1211 GCPRO4 (path, str, suffixes, suffixtab);
|
|
|
1212
|
|
|
1213 /* if this filename has directory components, it's too complicated
|
|
|
1214 to try and use the hash tables. */
|
|
|
1215 if (!NILP (Ffile_name_directory (str)))
|
|
|
1216 {
|
|
|
1217 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1218 UNGCPRO;
|
|
|
1219 return val;
|
|
|
1220 }
|
|
|
1221
|
|
|
1222 suffixtab = locate_file_construct_suffixed_files (str, suffixes);
|
|
|
1223
|
|
|
1224 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1225 {
|
|
|
1226 Lisp_Object pathel = XCAR (pathtail);
|
|
|
1227 Lisp_Object hash_table;
|
|
|
1228 Lisp_Object tail;
|
|
|
1229 int found = 0;
|
|
|
1230
|
|
|
1231 /* If this path element is relative, we have to look by hand. */
|
|
442
|
1232 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel)))
|
|
428
|
1233 {
|
|
|
1234 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1235 mode);
|
|
|
1236 if (val >= 0)
|
|
|
1237 {
|
|
|
1238 UNGCPRO;
|
|
|
1239 return val;
|
|
|
1240 }
|
|
|
1241 continue;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 pathel_expanded = Fexpand_file_name (pathel, Qnil);
|
|
|
1245 hash_table = locate_file_find_directory_hash_table (pathel_expanded);
|
|
|
1246
|
|
|
1247 if (!NILP (hash_table))
|
|
|
1248 {
|
|
|
1249 /* Loop over suffixes. */
|
|
|
1250 LIST_LOOP (tail, suffixtab)
|
|
|
1251 if (!NILP (Fgethash (XCAR (tail), hash_table, Qnil)))
|
|
|
1252 {
|
|
|
1253 found = 1;
|
|
|
1254 break;
|
|
|
1255 }
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 if (found)
|
|
|
1259 {
|
|
|
1260 /* This is a likely candidate. Look by hand in this directory
|
|
|
1261 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1262 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1263 mode);
|
|
|
1264 if (val >= 0)
|
|
|
1265 {
|
|
|
1266 UNGCPRO;
|
|
|
1267 return val;
|
|
|
1268 }
|
|
|
1269
|
|
|
1270 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1271 a directory ...) So refresh our hashing. */
|
|
|
1272 locate_file_refresh_hashing (pathel_expanded);
|
|
|
1273 }
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 /* File is probably not there, but check the hard way just in case. */
|
|
|
1277 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1278 if (val >= 0)
|
|
|
1279 {
|
|
|
1280 /* Sneaky user added a file without telling us. */
|
|
|
1281 Flocate_file_clear_hashing (path);
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 UNGCPRO;
|
|
|
1285 return val;
|
|
|
1286 }
|
|
|
1287
|
|
|
1288
|
|
|
1289 #ifdef LOADHIST
|
|
|
1290
|
|
|
1291 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1292 into the load_history variable. The details depend on whether
|
|
|
1293 the source has an associated file name or not. */
|
|
|
1294
|
|
|
1295 static void
|
|
|
1296 build_load_history (int loading, Lisp_Object source)
|
|
|
1297 {
|
|
|
1298 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1299 REGISTER Lisp_Object tem, tem2;
|
|
|
1300 int foundit;
|
|
|
1301
|
|
|
1302 #if !defined(LOADHIST_DUMPED)
|
|
|
1303 /* Don't bother recording anything for preloaded files. */
|
|
|
1304 if (purify_flag)
|
|
|
1305 return;
|
|
|
1306 #endif
|
|
|
1307
|
|
|
1308 tail = Vload_history;
|
|
|
1309 prev = Qnil;
|
|
|
1310 foundit = 0;
|
|
|
1311 while (!NILP (tail))
|
|
|
1312 {
|
|
|
1313 tem = Fcar (tail);
|
|
|
1314
|
|
|
1315 /* Find the feature's previous assoc list... */
|
|
|
1316 if (internal_equal (source, Fcar (tem), 0))
|
|
|
1317 {
|
|
|
1318 foundit = 1;
|
|
|
1319
|
|
|
1320 /* If we're loading, remove it. */
|
|
|
1321 if (loading)
|
|
|
1322 {
|
|
|
1323 if (NILP (prev))
|
|
|
1324 Vload_history = Fcdr (tail);
|
|
|
1325 else
|
|
|
1326 Fsetcdr (prev, Fcdr (tail));
|
|
|
1327 }
|
|
|
1328
|
|
|
1329 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1330 else
|
|
|
1331 {
|
|
|
1332 tem2 = Vcurrent_load_list;
|
|
|
1333
|
|
|
1334 while (CONSP (tem2))
|
|
|
1335 {
|
|
|
1336 newelt = XCAR (tem2);
|
|
|
1337
|
|
|
1338 if (NILP (Fmemq (newelt, tem)))
|
|
|
1339 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1340 Fcons (newelt, Fcdr (tem))));
|
|
|
1341
|
|
|
1342 tem2 = XCDR (tem2);
|
|
|
1343 QUIT;
|
|
|
1344 }
|
|
|
1345 }
|
|
|
1346 }
|
|
|
1347 else
|
|
|
1348 prev = tail;
|
|
|
1349 tail = Fcdr (tail);
|
|
|
1350 QUIT;
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1354 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1355 an existing member for the current source. */
|
|
|
1356 if (loading || !foundit)
|
|
|
1357 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1358 Vload_history);
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 #else /* !LOADHIST */
|
|
|
1362 #define build_load_history(x,y)
|
|
|
1363 #endif /* !LOADHIST */
|
|
|
1364
|
|
|
1365
|
|
|
1366 #if 0 /* FSFmacs defun hack */
|
|
|
1367 Lisp_Object
|
|
|
1368 unreadpure (void) /* Used as unwind-protect function in readevalloop */
|
|
|
1369 {
|
|
|
1370 read_pure = 0;
|
|
|
1371 return Qnil;
|
|
|
1372 }
|
|
|
1373 #endif /* 0 */
|
|
|
1374
|
|
|
1375 static void
|
|
|
1376 readevalloop (Lisp_Object readcharfun,
|
|
|
1377 Lisp_Object sourcename,
|
|
|
1378 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1379 int printflag)
|
|
|
1380 {
|
|
|
1381 /* This function can GC */
|
|
|
1382 REGISTER Emchar c;
|
|
|
1383 REGISTER Lisp_Object val = Qnil;
|
|
|
1384 int speccount = specpdl_depth ();
|
|
|
1385 struct gcpro gcpro1, gcpro2;
|
|
|
1386 struct buffer *b = 0;
|
|
|
1387
|
|
|
1388 if (BUFFERP (readcharfun))
|
|
|
1389 b = XBUFFER (readcharfun);
|
|
|
1390 else if (MARKERP (readcharfun))
|
|
|
1391 b = XMARKER (readcharfun)->buffer;
|
|
|
1392
|
|
|
1393 /* Don't do this. It is not necessary, and it needlessly exposes
|
|
|
1394 READCHARFUN (which can be a stream) to Lisp. --hniksic */
|
|
|
1395 /*specbind (Qstandard_input, readcharfun);*/
|
|
|
1396
|
|
|
1397 specbind (Qcurrent_load_list, Qnil);
|
|
|
1398
|
|
|
1399 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1400 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1401 #endif
|
|
|
1402 GCPRO2 (val, sourcename);
|
|
|
1403
|
|
|
1404 LOADHIST_ATTACH (sourcename);
|
|
|
1405
|
|
|
1406 while (1)
|
|
|
1407 {
|
|
|
1408 QUIT;
|
|
|
1409
|
|
|
1410 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
563
|
1411 invalid_operation ("Reading from killed buffer", Qunbound);
|
|
428
|
1412
|
|
|
1413 c = readchar (readcharfun);
|
|
|
1414 if (c == ';')
|
|
|
1415 {
|
|
|
1416 /* Skip comment */
|
|
|
1417 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1418 QUIT;
|
|
|
1419 continue;
|
|
|
1420 }
|
|
|
1421 if (c < 0)
|
|
|
1422 break;
|
|
|
1423
|
|
|
1424 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1425 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1426 continue;
|
|
|
1427
|
|
|
1428 #if 0 /* FSFmacs defun hack */
|
|
|
1429 if (purify_flag && c == '(')
|
|
|
1430 {
|
|
|
1431 int count1 = specpdl_depth ();
|
|
|
1432 record_unwind_protect (unreadpure, Qnil);
|
|
|
1433 val = read_list (readcharfun, ')', -1, 1);
|
|
|
1434 unbind_to (count1, Qnil);
|
|
|
1435 }
|
|
|
1436 else
|
|
|
1437 #else /* No "defun hack" -- Emacs 19 uses read-time syntax for bytecodes */
|
|
|
1438 {
|
|
|
1439 unreadchar (readcharfun, c);
|
|
|
1440 Vread_objects = Qnil;
|
|
|
1441 if (NILP (Vload_read_function))
|
|
|
1442 val = read0 (readcharfun);
|
|
|
1443 else
|
|
|
1444 val = call1 (Vload_read_function, readcharfun);
|
|
|
1445 }
|
|
|
1446 #endif
|
|
|
1447 val = (*evalfun) (val);
|
|
|
1448 if (printflag)
|
|
|
1449 {
|
|
|
1450 Vvalues = Fcons (val, Vvalues);
|
|
|
1451 if (EQ (Vstandard_output, Qt))
|
|
|
1452 Fprin1 (val, Qnil);
|
|
|
1453 else
|
|
|
1454 Fprint (val, Qnil);
|
|
|
1455 }
|
|
|
1456 }
|
|
|
1457
|
|
|
1458 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1459 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1460 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1461 sourcename);
|
|
|
1462 UNGCPRO;
|
|
|
1463
|
|
|
1464 unbind_to (speccount, Qnil);
|
|
|
1465 }
|
|
|
1466
|
|
|
1467 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /*
|
|
|
1468 Execute BUFFER as Lisp code.
|
|
|
1469 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1470 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1471 PRINTFLAG controls printing of output:
|
|
444
|
1472 nil means discard it; anything else is a stream for printing.
|
|
428
|
1473
|
|
|
1474 If there is no error, point does not move. If there is an error,
|
|
|
1475 point remains at the end of the last character read from the buffer.
|
|
|
1476 */
|
|
444
|
1477 (buffer, printflag))
|
|
428
|
1478 {
|
|
|
1479 /* This function can GC */
|
|
|
1480 int speccount = specpdl_depth ();
|
|
|
1481 Lisp_Object tem, buf;
|
|
|
1482
|
|
444
|
1483 if (NILP (buffer))
|
|
428
|
1484 buf = Fcurrent_buffer ();
|
|
|
1485 else
|
|
444
|
1486 buf = Fget_buffer (buffer);
|
|
428
|
1487 if (NILP (buf))
|
|
563
|
1488 invalid_argument ("No such buffer", Qunbound);
|
|
428
|
1489
|
|
|
1490 if (NILP (printflag))
|
|
|
1491 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1492 else
|
|
|
1493 tem = printflag;
|
|
|
1494 specbind (Qstandard_output, tem);
|
|
|
1495 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1496 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1497 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1498 !NILP (printflag));
|
|
|
1499
|
|
|
1500 return unbind_to (speccount, Qnil);
|
|
|
1501 }
|
|
|
1502
|
|
|
1503 #if 0
|
|
|
1504 xxDEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /*
|
|
|
1505 Execute the current buffer as Lisp code.
|
|
|
1506 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1507 nil means discard it; anything else is stream for print.
|
|
|
1508
|
|
|
1509 If there is no error, point does not move. If there is an error,
|
|
|
1510 point remains at the end of the last character read from the buffer.
|
|
|
1511 */
|
|
|
1512 (printflag))
|
|
|
1513 {
|
|
|
1514 code omitted;
|
|
|
1515 }
|
|
|
1516 #endif /* 0 */
|
|
|
1517
|
|
|
1518 DEFUN ("eval-region", Feval_region, 2, 3, "r", /*
|
|
|
1519 Execute the region as Lisp code.
|
|
444
|
1520 When called from programs, expects two arguments START and END
|
|
428
|
1521 giving starting and ending indices in the current buffer
|
|
|
1522 of the text to be executed.
|
|
444
|
1523 Programs can pass third optional argument STREAM which controls output:
|
|
428
|
1524 nil means discard it; anything else is stream for printing it.
|
|
|
1525
|
|
|
1526 If there is no error, point does not move. If there is an error,
|
|
|
1527 point remains at the end of the last character read from the buffer.
|
|
|
1528
|
|
|
1529 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1530 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1531 see some text temporarily disappear because of this.
|
|
|
1532 */
|
|
444
|
1533 (start, end, stream))
|
|
428
|
1534 {
|
|
|
1535 /* This function can GC */
|
|
|
1536 int speccount = specpdl_depth ();
|
|
|
1537 Lisp_Object tem;
|
|
|
1538 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1539
|
|
444
|
1540 if (NILP (stream))
|
|
428
|
1541 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1542 else
|
|
444
|
1543 tem = stream;
|
|
428
|
1544 specbind (Qstandard_output, tem);
|
|
|
1545
|
|
444
|
1546 if (NILP (stream))
|
|
428
|
1547 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1548 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1549
|
|
444
|
1550 /* This both uses start and checks its type. */
|
|
|
1551 Fgoto_char (start, cbuf);
|
|
|
1552 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), end, cbuf);
|
|
428
|
1553 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
444
|
1554 !NILP (stream));
|
|
428
|
1555
|
|
|
1556 return unbind_to (speccount, Qnil);
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 DEFUN ("read", Fread, 0, 1, 0, /*
|
|
|
1560 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1561 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1562 STREAM or the value of `standard-input' may be:
|
|
|
1563 a buffer (read from point and advance it)
|
|
|
1564 a marker (read from where it points and advance it)
|
|
|
1565 a function (call it with no arguments for each character,
|
|
|
1566 call it with a char as argument to push a char back)
|
|
|
1567 a string (takes text from string, starting at the beginning)
|
|
|
1568 t (read text line using minibuffer and use it).
|
|
|
1569 */
|
|
|
1570 (stream))
|
|
|
1571 {
|
|
|
1572 if (NILP (stream))
|
|
|
1573 stream = Vstandard_input;
|
|
|
1574 if (EQ (stream, Qt))
|
|
|
1575 stream = Qread_char;
|
|
|
1576
|
|
|
1577 Vread_objects = Qnil;
|
|
|
1578
|
|
|
1579 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1580 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1581 #endif
|
|
|
1582 if (EQ (stream, Qread_char))
|
|
|
1583 {
|
|
|
1584 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
|
1585 build_translated_string ("Lisp expression: "));
|
|
|
1586 return Fcar (Fread_from_string (val, Qnil, Qnil));
|
|
|
1587 }
|
|
|
1588
|
|
|
1589 if (STRINGP (stream))
|
|
|
1590 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1591
|
|
|
1592 return read0 (stream);
|
|
|
1593 }
|
|
|
1594
|
|
|
1595 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /*
|
|
|
1596 Read one Lisp expression which is represented as text by STRING.
|
|
|
1597 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1598 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1599 they default to 0 and (length STRING) respectively.
|
|
|
1600 */
|
|
|
1601 (string, start, end))
|
|
|
1602 {
|
|
|
1603 Bytecount startval, endval;
|
|
|
1604 Lisp_Object tem;
|
|
|
1605 Lisp_Object lispstream = Qnil;
|
|
|
1606 struct gcpro gcpro1;
|
|
|
1607
|
|
|
1608 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1609 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1610 #endif
|
|
|
1611 GCPRO1 (lispstream);
|
|
|
1612 CHECK_STRING (string);
|
|
|
1613 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1614 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1615 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1616 endval - startval);
|
|
|
1617
|
|
|
1618 Vread_objects = Qnil;
|
|
|
1619
|
|
|
1620 tem = read0 (lispstream);
|
|
|
1621 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1622 At least our reader is reentrant ... */
|
|
|
1623 tem =
|
|
|
1624 (Fcons (tem, make_int
|
|
|
1625 (bytecount_to_charcount
|
|
|
1626 (XSTRING_DATA (string),
|
|
|
1627 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1628 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1629 UNGCPRO;
|
|
|
1630 return tem;
|
|
|
1631 }
|
|
|
1632
|
|
|
1633
|
|
|
1634 #ifdef LISP_BACKQUOTES
|
|
|
1635
|
|
|
1636 static Lisp_Object
|
|
|
1637 backquote_unwind (Lisp_Object ptr)
|
|
|
1638 { /* used as unwind-protect function in read0() */
|
|
|
1639 int *counter = (int *) get_opaque_ptr (ptr);
|
|
|
1640 if (--*counter < 0)
|
|
|
1641 *counter = 0;
|
|
|
1642 free_opaque_ptr (ptr);
|
|
|
1643 return Qnil;
|
|
|
1644 }
|
|
|
1645
|
|
|
1646 #endif
|
|
|
1647
|
|
|
1648 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1649 are not allowed. See also read1(). */
|
|
|
1650 static Lisp_Object
|
|
|
1651 read0 (Lisp_Object readcharfun)
|
|
|
1652 {
|
|
|
1653 Lisp_Object val = read1 (readcharfun);
|
|
|
1654
|
|
|
1655 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1656 {
|
|
|
1657 Emchar c = XCHAR (XCDR (val));
|
|
|
1658 free_cons (XCONS (val));
|
|
|
1659 return Fsignal (Qinvalid_read_syntax,
|
|
|
1660 list1 (Fchar_to_string (make_char (c))));
|
|
|
1661 }
|
|
|
1662
|
|
|
1663 return val;
|
|
|
1664 }
|
|
|
1665
|
|
|
1666 static Emchar
|
|
|
1667 read_escape (Lisp_Object readcharfun)
|
|
|
1668 {
|
|
|
1669 /* This function can GC */
|
|
|
1670 Emchar c = readchar (readcharfun);
|
|
|
1671
|
|
|
1672 if (c < 0)
|
|
563
|
1673 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1674
|
|
|
1675 switch (c)
|
|
|
1676 {
|
|
|
1677 case 'a': return '\007';
|
|
|
1678 case 'b': return '\b';
|
|
|
1679 case 'd': return 0177;
|
|
|
1680 case 'e': return 033;
|
|
|
1681 case 'f': return '\f';
|
|
|
1682 case 'n': return '\n';
|
|
|
1683 case 'r': return '\r';
|
|
|
1684 case 't': return '\t';
|
|
|
1685 case 'v': return '\v';
|
|
|
1686 case '\n': return -1;
|
|
|
1687
|
|
|
1688 case 'M':
|
|
|
1689 c = readchar (readcharfun);
|
|
|
1690 if (c < 0)
|
|
563
|
1691 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1692 if (c != '-')
|
|
563
|
1693 syntax_error ("Invalid escape character syntax", Qunbound);
|
|
428
|
1694 c = readchar (readcharfun);
|
|
|
1695 if (c < 0)
|
|
563
|
1696 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1697 if (c == '\\')
|
|
|
1698 c = read_escape (readcharfun);
|
|
|
1699 return c | 0200;
|
|
|
1700
|
|
|
1701 /* Originally, FSF_KEYS provided a degree of FSF Emacs
|
|
|
1702 compatibility by defining character "modifiers" alt, super,
|
|
|
1703 hyper and shift to infest the characters (i.e. integers).
|
|
|
1704
|
|
|
1705 However, this doesn't cut it for XEmacs 20, which
|
|
|
1706 distinguishes characters from integers. Without Mule, ?\H-a
|
|
|
1707 simply returns ?a because every character is clipped into
|
|
|
1708 0-255. Under Mule it is much worse -- ?\H-a with FSF_KEYS
|
|
|
1709 produces an illegal character, and moves us to crash-land.
|
|
|
1710
|
|
|
1711 For these reasons, FSF_KEYS hack is useless and without hope
|
|
|
1712 of ever working under XEmacs 20. */
|
|
|
1713 #undef FSF_KEYS
|
|
|
1714
|
|
|
1715 #ifdef FSF_KEYS
|
|
|
1716 #define alt_modifier (0x040000)
|
|
|
1717 #define super_modifier (0x080000)
|
|
|
1718 #define hyper_modifier (0x100000)
|
|
|
1719 #define shift_modifier (0x200000)
|
|
|
1720 /* fsf uses a different modifiers for meta and control. Possibly
|
|
|
1721 byte_compiled code will still work fsfmacs, though... --Stig
|
|
|
1722
|
|
|
1723 #define ctl_modifier (0x400000)
|
|
|
1724 #define meta_modifier (0x800000)
|
|
|
1725 */
|
|
563
|
1726 #define FSF_LOSSAGE(mask) \
|
|
|
1727 if (fail_on_bucky_bit_character_escapes || \
|
|
|
1728 ((c = readchar (readcharfun)) != '-')) \
|
|
|
1729 syntax_error ("Invalid escape character syntax", Qunbound); \
|
|
|
1730 c = readchar (readcharfun); \
|
|
|
1731 if (c < 0) \
|
|
|
1732 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun)); \
|
|
|
1733 if (c == '\\') \
|
|
|
1734 c = read_escape (readcharfun); \
|
|
428
|
1735 return c | mask
|
|
|
1736
|
|
|
1737 case 'S': FSF_LOSSAGE (shift_modifier);
|
|
|
1738 case 'H': FSF_LOSSAGE (hyper_modifier);
|
|
|
1739 case 'A': FSF_LOSSAGE (alt_modifier);
|
|
|
1740 case 's': FSF_LOSSAGE (super_modifier);
|
|
|
1741 #undef alt_modifier
|
|
|
1742 #undef super_modifier
|
|
|
1743 #undef hyper_modifier
|
|
|
1744 #undef shift_modifier
|
|
|
1745 #undef FSF_LOSSAGE
|
|
|
1746
|
|
|
1747 #endif /* FSF_KEYS */
|
|
|
1748
|
|
|
1749 case 'C':
|
|
|
1750 c = readchar (readcharfun);
|
|
|
1751 if (c < 0)
|
|
563
|
1752 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1753 if (c != '-')
|
|
563
|
1754 syntax_error ("Invalid escape character syntax", Qunbound);
|
|
428
|
1755 case '^':
|
|
|
1756 c = readchar (readcharfun);
|
|
|
1757 if (c < 0)
|
|
563
|
1758 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1759 if (c == '\\')
|
|
|
1760 c = read_escape (readcharfun);
|
|
|
1761 /* FSFmacs junk for non-ASCII controls.
|
|
|
1762 Not used here. */
|
|
|
1763 if (c == '?')
|
|
|
1764 return 0177;
|
|
|
1765 else
|
|
|
1766 return c & (0200 | 037);
|
|
|
1767
|
|
|
1768 case '0':
|
|
|
1769 case '1':
|
|
|
1770 case '2':
|
|
|
1771 case '3':
|
|
|
1772 case '4':
|
|
|
1773 case '5':
|
|
|
1774 case '6':
|
|
|
1775 case '7':
|
|
|
1776 /* An octal escape, as in ANSI C. */
|
|
|
1777 {
|
|
|
1778 REGISTER Emchar i = c - '0';
|
|
|
1779 REGISTER int count = 0;
|
|
|
1780 while (++count < 3)
|
|
|
1781 {
|
|
|
1782 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1783 i = (i << 3) + (c - '0');
|
|
|
1784 else
|
|
|
1785 {
|
|
|
1786 unreadchar (readcharfun, c);
|
|
|
1787 break;
|
|
|
1788 }
|
|
|
1789 }
|
|
|
1790 return i;
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 case 'x':
|
|
|
1794 /* A hex escape, as in ANSI C, except that we only allow latin-1
|
|
|
1795 characters to be read this way. What is "\x4e03" supposed to
|
|
|
1796 mean, anyways, if the internal representation is hidden?
|
|
|
1797 This is also consistent with the treatment of octal escapes. */
|
|
|
1798 {
|
|
|
1799 REGISTER Emchar i = 0;
|
|
|
1800 REGISTER int count = 0;
|
|
|
1801 while (++count <= 2)
|
|
|
1802 {
|
|
|
1803 c = readchar (readcharfun);
|
|
|
1804 /* Remember, can't use isdigit(), isalpha() etc. on Emchars */
|
|
|
1805 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1806 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1807 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1808 else
|
|
|
1809 {
|
|
|
1810 unreadchar (readcharfun, c);
|
|
|
1811 break;
|
|
|
1812 }
|
|
|
1813 }
|
|
|
1814 return i;
|
|
|
1815 }
|
|
|
1816
|
|
|
1817 #ifdef MULE
|
|
|
1818 /* #### need some way of reading an extended character with
|
|
|
1819 an escape sequence. */
|
|
|
1820 #endif
|
|
|
1821
|
|
|
1822 default:
|
|
|
1823 return c;
|
|
|
1824 }
|
|
|
1825 }
|
|
|
1826
|
|
|
1827
|
|
|
1828
|
|
|
1829 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1830 static Bytecount
|
|
|
1831 read_atom_0 (Lisp_Object readcharfun, Emchar firstchar, int *saw_a_backslash)
|
|
|
1832 {
|
|
|
1833 /* This function can GC */
|
|
|
1834 Emchar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
|
1835 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1836
|
|
|
1837 *saw_a_backslash = 0;
|
|
|
1838
|
|
|
1839 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1840 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1841 || c == '(' || c == ')'
|
|
|
1842 #ifndef LISP_FLOAT_TYPE
|
|
|
1843 /* If we have floating-point support, then we need
|
|
|
1844 to allow <digits><dot><digits>. */
|
|
|
1845 || c =='.'
|
|
|
1846 #endif /* not LISP_FLOAT_TYPE */
|
|
|
1847 || c == '[' || c == ']' || c == '#'
|
|
|
1848 ))
|
|
|
1849 {
|
|
|
1850 if (c == '\\')
|
|
|
1851 {
|
|
|
1852 c = readchar (readcharfun);
|
|
|
1853 if (c < 0)
|
|
563
|
1854 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1855 *saw_a_backslash = 1;
|
|
|
1856 }
|
|
|
1857 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
1858 QUIT;
|
|
|
1859 c = readchar (readcharfun);
|
|
|
1860 }
|
|
|
1861
|
|
|
1862 if (c >= 0)
|
|
|
1863 unreadchar (readcharfun, c);
|
|
|
1864 /* blasted terminating 0 */
|
|
|
1865 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), 0);
|
|
|
1866 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1867
|
|
|
1868 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1;
|
|
|
1869 }
|
|
|
1870
|
|
442
|
1871 static Lisp_Object parse_integer (const Bufbyte *buf, Bytecount len, int base);
|
|
428
|
1872
|
|
|
1873 static Lisp_Object
|
|
|
1874 read_atom (Lisp_Object readcharfun,
|
|
|
1875 Emchar firstchar,
|
|
|
1876 int uninterned_symbol)
|
|
|
1877 {
|
|
|
1878 /* This function can GC */
|
|
|
1879 int saw_a_backslash;
|
|
|
1880 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1881 char *read_ptr = (char *)
|
|
|
1882 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1883
|
|
|
1884 /* Is it an integer? */
|
|
|
1885 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1886 {
|
|
|
1887 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1888 being an integer or a float. This means that 123\456 is a
|
|
|
1889 symbol, as is \123 (which is the way (intern "123") prints).
|
|
|
1890 Also, if token was preceded by #:, it's always a symbol.
|
|
|
1891 */
|
|
|
1892 char *p = read_ptr + len;
|
|
|
1893 char *p1 = read_ptr;
|
|
|
1894
|
|
|
1895 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1896 if (p1 != p)
|
|
|
1897 {
|
|
|
1898 int c;
|
|
|
1899
|
|
|
1900 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1901 p1++;
|
|
|
1902 #ifdef LISP_FLOAT_TYPE
|
|
|
1903 /* Integers can have trailing decimal points. */
|
|
|
1904 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1905 p1++;
|
|
|
1906 #endif
|
|
|
1907 if (p1 == p)
|
|
|
1908 {
|
|
|
1909 /* It is an integer. */
|
|
|
1910 #ifdef LISP_FLOAT_TYPE
|
|
|
1911 if (p1[-1] == '.')
|
|
|
1912 p1[-1] = '\0';
|
|
|
1913 #endif
|
|
|
1914 #if 0
|
|
|
1915 {
|
|
|
1916 int number = 0;
|
|
|
1917 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1918 number = atoi (read_buffer);
|
|
|
1919 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1920 number = atol (read_buffer);
|
|
|
1921 else
|
|
|
1922 abort ();
|
|
|
1923 return make_int (number);
|
|
|
1924 }
|
|
|
1925 #else
|
|
|
1926 return parse_integer ((Bufbyte *) read_ptr, len, 10);
|
|
|
1927 #endif
|
|
|
1928 }
|
|
|
1929 }
|
|
|
1930 #ifdef LISP_FLOAT_TYPE
|
|
|
1931 if (isfloat_string (read_ptr))
|
|
|
1932 return make_float (atof (read_ptr));
|
|
|
1933 #endif
|
|
|
1934 }
|
|
|
1935
|
|
|
1936 {
|
|
|
1937 Lisp_Object sym;
|
|
|
1938 if (uninterned_symbol)
|
|
|
1939 sym = Fmake_symbol ( make_string ((Bufbyte *) read_ptr, len));
|
|
|
1940 else
|
|
|
1941 {
|
|
|
1942 Lisp_Object name = make_string ((Bufbyte *) read_ptr, len);
|
|
|
1943 sym = Fintern (name, Qnil);
|
|
|
1944 }
|
|
|
1945 return sym;
|
|
|
1946 }
|
|
|
1947 }
|
|
|
1948
|
|
|
1949
|
|
|
1950 static Lisp_Object
|
|
442
|
1951 parse_integer (const Bufbyte *buf, Bytecount len, int base)
|
|
428
|
1952 {
|
|
442
|
1953 const Bufbyte *lim = buf + len;
|
|
|
1954 const Bufbyte *p = buf;
|
|
428
|
1955 EMACS_UINT num = 0;
|
|
|
1956 int negativland = 0;
|
|
|
1957
|
|
|
1958 if (*p == '-')
|
|
|
1959 {
|
|
|
1960 negativland = 1;
|
|
|
1961 p++;
|
|
|
1962 }
|
|
|
1963 else if (*p == '+')
|
|
|
1964 {
|
|
|
1965 p++;
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 if (p == lim)
|
|
|
1969 goto loser;
|
|
|
1970
|
|
|
1971 for (; (p < lim) && (*p != '\0'); p++)
|
|
|
1972 {
|
|
|
1973 int c = *p;
|
|
|
1974 EMACS_UINT onum;
|
|
|
1975
|
|
|
1976 if (isdigit (c))
|
|
|
1977 c = c - '0';
|
|
|
1978 else if (isupper (c))
|
|
|
1979 c = c - 'A' + 10;
|
|
|
1980 else if (islower (c))
|
|
|
1981 c = c - 'a' + 10;
|
|
|
1982 else
|
|
|
1983 goto loser;
|
|
|
1984
|
|
|
1985 if (c < 0 || c >= base)
|
|
|
1986 goto loser;
|
|
|
1987
|
|
|
1988 onum = num;
|
|
|
1989 num = num * base + c;
|
|
|
1990 if (num < onum)
|
|
|
1991 goto overflow;
|
|
|
1992 }
|
|
|
1993
|
|
|
1994 {
|
|
|
1995 EMACS_INT int_result = negativland ? - (EMACS_INT) num : (EMACS_INT) num;
|
|
|
1996 Lisp_Object result = make_int (int_result);
|
|
|
1997 if (num && ((XINT (result) < 0) != negativland))
|
|
|
1998 goto overflow;
|
|
|
1999 if (XINT (result) != int_result)
|
|
|
2000 goto overflow;
|
|
|
2001 return result;
|
|
|
2002 }
|
|
|
2003 overflow:
|
|
|
2004 return Fsignal (Qinvalid_read_syntax,
|
|
|
2005 list3 (build_translated_string
|
|
|
2006 ("Integer constant overflow in reader"),
|
|
|
2007 make_string (buf, len),
|
|
|
2008 make_int (base)));
|
|
|
2009 loser:
|
|
|
2010 return Fsignal (Qinvalid_read_syntax,
|
|
|
2011 list3 (build_translated_string
|
|
|
2012 ("Invalid integer constant in reader"),
|
|
|
2013 make_string (buf, len),
|
|
|
2014 make_int (base)));
|
|
|
2015 }
|
|
|
2016
|
|
|
2017
|
|
|
2018 static Lisp_Object
|
|
|
2019 read_integer (Lisp_Object readcharfun, int base)
|
|
|
2020 {
|
|
|
2021 /* This function can GC */
|
|
|
2022 int saw_a_backslash;
|
|
|
2023 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
2024 return (parse_integer
|
|
|
2025 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2026 ((saw_a_backslash)
|
|
|
2027 ? 0 /* make parse_integer signal error */
|
|
|
2028 : len),
|
|
|
2029 base));
|
|
|
2030 }
|
|
|
2031
|
|
|
2032 static Lisp_Object
|
|
|
2033 read_bit_vector (Lisp_Object readcharfun)
|
|
|
2034 {
|
|
|
2035 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char);
|
|
440
|
2036 Lisp_Object val;
|
|
428
|
2037
|
|
|
2038 while (1)
|
|
|
2039 {
|
|
444
|
2040 unsigned char bit;
|
|
|
2041 Emchar c = readchar (readcharfun);
|
|
|
2042 if (c == '0')
|
|
|
2043 bit = 0;
|
|
|
2044 else if (c == '1')
|
|
|
2045 bit = 1;
|
|
|
2046 else
|
|
|
2047 {
|
|
|
2048 if (c >= 0)
|
|
|
2049 unreadchar (readcharfun, c);
|
|
|
2050 break;
|
|
|
2051 }
|
|
|
2052 Dynarr_add (dyn, bit);
|
|
428
|
2053 }
|
|
|
2054
|
|
440
|
2055 val = make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
2056 Dynarr_length (dyn));
|
|
|
2057 Dynarr_free (dyn);
|
|
|
2058
|
|
|
2059 return val;
|
|
428
|
2060 }
|
|
|
2061
|
|
|
2062
|
|
|
2063
|
|
|
2064 /* structures */
|
|
|
2065
|
|
|
2066 struct structure_type *
|
|
|
2067 define_structure_type (Lisp_Object type,
|
|
|
2068 int (*validate) (Lisp_Object data,
|
|
578
|
2069 Error_Behavior errb),
|
|
428
|
2070 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
2071 {
|
|
|
2072 struct structure_type st;
|
|
|
2073
|
|
|
2074 st.type = type;
|
|
|
2075 st.keywords = Dynarr_new (structure_keyword_entry);
|
|
|
2076 st.validate = validate;
|
|
|
2077 st.instantiate = instantiate;
|
|
|
2078 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
2079
|
|
|
2080 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
2081 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
2082 }
|
|
|
2083
|
|
|
2084 void
|
|
|
2085 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
2086 int (*validate) (Lisp_Object keyword,
|
|
|
2087 Lisp_Object value,
|
|
578
|
2088 Error_Behavior errb))
|
|
428
|
2089 {
|
|
|
2090 struct structure_keyword_entry en;
|
|
|
2091
|
|
|
2092 en.keyword = keyword;
|
|
|
2093 en.validate = validate;
|
|
|
2094 Dynarr_add (st->keywords, en);
|
|
|
2095 }
|
|
|
2096
|
|
|
2097 static struct structure_type *
|
|
|
2098 recognized_structure_type (Lisp_Object type)
|
|
|
2099 {
|
|
|
2100 int i;
|
|
|
2101
|
|
|
2102 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
2103 {
|
|
|
2104 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
2105 if (EQ (st->type, type))
|
|
|
2106 return st;
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 return 0;
|
|
|
2110 }
|
|
|
2111
|
|
|
2112 static Lisp_Object
|
|
|
2113 read_structure (Lisp_Object readcharfun)
|
|
|
2114 {
|
|
|
2115 Emchar c = readchar (readcharfun);
|
|
|
2116 Lisp_Object list = Qnil;
|
|
|
2117 Lisp_Object orig_list = Qnil;
|
|
|
2118 Lisp_Object already_seen = Qnil;
|
|
|
2119 int keyword_count;
|
|
|
2120 struct structure_type *st;
|
|
|
2121 struct gcpro gcpro1, gcpro2;
|
|
|
2122
|
|
|
2123 GCPRO2 (orig_list, already_seen);
|
|
|
2124 if (c != '(')
|
|
442
|
2125 RETURN_UNGCPRO (continuable_read_syntax_error ("#s not followed by paren"));
|
|
428
|
2126 list = read_list (readcharfun, ')', 0, 0);
|
|
|
2127 orig_list = list;
|
|
|
2128 {
|
|
|
2129 int len = XINT (Flength (list));
|
|
|
2130 if (len == 0)
|
|
442
|
2131 RETURN_UNGCPRO (continuable_read_syntax_error
|
|
428
|
2132 ("structure type not specified"));
|
|
|
2133 if (!(len & 1))
|
|
|
2134 RETURN_UNGCPRO
|
|
442
|
2135 (continuable_read_syntax_error
|
|
428
|
2136 ("structures must have alternating keyword/value pairs"));
|
|
|
2137 }
|
|
|
2138
|
|
|
2139 st = recognized_structure_type (XCAR (list));
|
|
|
2140 if (!st)
|
|
|
2141 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2142 list2 (build_translated_string
|
|
|
2143 ("unrecognized structure type"),
|
|
|
2144 XCAR (list))));
|
|
|
2145
|
|
|
2146 list = Fcdr (list);
|
|
|
2147 keyword_count = Dynarr_length (st->keywords);
|
|
|
2148 while (!NILP (list))
|
|
|
2149 {
|
|
|
2150 Lisp_Object keyword, value;
|
|
|
2151 int i;
|
|
|
2152 struct structure_keyword_entry *en = NULL;
|
|
|
2153
|
|
|
2154 keyword = Fcar (list);
|
|
|
2155 list = Fcdr (list);
|
|
|
2156 value = Fcar (list);
|
|
|
2157 list = Fcdr (list);
|
|
|
2158
|
|
|
2159 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
|
2160 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2161 list2 (build_translated_string
|
|
|
2162 ("structure keyword already seen"),
|
|
|
2163 keyword)));
|
|
|
2164
|
|
|
2165 for (i = 0; i < keyword_count; i++)
|
|
|
2166 {
|
|
|
2167 en = Dynarr_atp (st->keywords, i);
|
|
|
2168 if (EQ (keyword, en->keyword))
|
|
|
2169 break;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172 if (i == keyword_count)
|
|
|
2173 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2174 list2 (build_translated_string
|
|
|
2175 ("unrecognized structure keyword"),
|
|
|
2176 keyword)));
|
|
|
2177
|
|
|
2178 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
2179 RETURN_UNGCPRO
|
|
|
2180 (Fsignal (Qinvalid_read_syntax,
|
|
|
2181 list3 (build_translated_string
|
|
|
2182 ("invalid value for structure keyword"),
|
|
|
2183 keyword, value)));
|
|
|
2184
|
|
|
2185 already_seen = Fcons (keyword, already_seen);
|
|
|
2186 }
|
|
|
2187
|
|
|
2188 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
|
2189 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2190 list2 (build_translated_string
|
|
|
2191 ("invalid structure initializer"),
|
|
|
2192 orig_list)));
|
|
|
2193
|
|
|
2194 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
|
2195 }
|
|
|
2196
|
|
|
2197
|
|
|
2198 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
2199 int terminator);
|
|
|
2200 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
2201
|
|
|
2202 /* Get the next character; filter out whitespace and comments */
|
|
|
2203
|
|
|
2204 static Emchar
|
|
|
2205 reader_nextchar (Lisp_Object readcharfun)
|
|
|
2206 {
|
|
|
2207 /* This function can GC */
|
|
|
2208 Emchar c;
|
|
|
2209
|
|
|
2210 retry:
|
|
|
2211 QUIT;
|
|
|
2212 c = readchar (readcharfun);
|
|
|
2213 if (c < 0)
|
|
563
|
2214 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
2215
|
|
|
2216 switch (c)
|
|
|
2217 {
|
|
|
2218 default:
|
|
|
2219 {
|
|
|
2220 /* Ignore whitespace and control characters */
|
|
|
2221 if (c <= 040)
|
|
|
2222 goto retry;
|
|
|
2223 return c;
|
|
|
2224 }
|
|
|
2225
|
|
|
2226 case ';':
|
|
|
2227 {
|
|
|
2228 /* Comment */
|
|
|
2229 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2230 QUIT;
|
|
|
2231 goto retry;
|
|
|
2232 }
|
|
|
2233 }
|
|
|
2234 }
|
|
|
2235
|
|
|
2236 #if 0
|
|
|
2237 static Lisp_Object
|
|
|
2238 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2239 {
|
|
|
2240 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b);
|
|
|
2241 }
|
|
|
2242 #endif
|
|
|
2243
|
|
|
2244 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2245 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2246 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2247 or dot followed by a non-number). To filter this stuff out,
|
|
|
2248 use read0(). */
|
|
|
2249
|
|
|
2250 static Lisp_Object
|
|
|
2251 read1 (Lisp_Object readcharfun)
|
|
|
2252 {
|
|
|
2253 Emchar c;
|
|
|
2254
|
|
|
2255 retry:
|
|
|
2256 c = reader_nextchar (readcharfun);
|
|
|
2257
|
|
|
2258 switch (c)
|
|
|
2259 {
|
|
|
2260 case '(':
|
|
|
2261 {
|
|
|
2262 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2263 /* if this is disabled, then other code in eval.c must be enabled */
|
|
|
2264 Emchar ch = reader_nextchar (readcharfun);
|
|
|
2265 switch (ch)
|
|
|
2266 {
|
|
|
2267 case '`':
|
|
|
2268 {
|
|
|
2269 Lisp_Object tem;
|
|
|
2270 int speccount = specpdl_depth ();
|
|
|
2271 ++old_backquote_flag;
|
|
|
2272 record_unwind_protect (backquote_unwind,
|
|
|
2273 make_opaque_ptr (&old_backquote_flag));
|
|
|
2274 tem = read0 (readcharfun);
|
|
|
2275 unbind_to (speccount, Qnil);
|
|
|
2276 ch = reader_nextchar (readcharfun);
|
|
|
2277 if (ch != ')')
|
|
|
2278 {
|
|
|
2279 unreadchar (readcharfun, ch);
|
|
|
2280 return Fsignal (Qinvalid_read_syntax,
|
|
|
2281 list1 (build_string
|
|
|
2282 ("Weird old-backquote syntax")));
|
|
|
2283 }
|
|
|
2284 return list2 (Qbacktick, tem);
|
|
|
2285 }
|
|
|
2286 case ',':
|
|
|
2287 {
|
|
|
2288 if (old_backquote_flag)
|
|
|
2289 {
|
|
|
2290 Lisp_Object tem, comma_type;
|
|
|
2291 ch = readchar (readcharfun);
|
|
|
2292 if (ch == '@')
|
|
|
2293 comma_type = Qcomma_at;
|
|
|
2294 else
|
|
|
2295 {
|
|
|
2296 if (ch >= 0)
|
|
|
2297 unreadchar (readcharfun, ch);
|
|
|
2298 comma_type = Qcomma;
|
|
|
2299 }
|
|
|
2300 tem = read0 (readcharfun);
|
|
|
2301 ch = reader_nextchar (readcharfun);
|
|
|
2302 if (ch != ')')
|
|
|
2303 {
|
|
|
2304 unreadchar (readcharfun, ch);
|
|
|
2305 return Fsignal (Qinvalid_read_syntax,
|
|
|
2306 list1 (build_string
|
|
|
2307 ("Weird old-backquote syntax")));
|
|
|
2308 }
|
|
|
2309 return list2 (comma_type, tem);
|
|
|
2310 }
|
|
|
2311 else
|
|
|
2312 {
|
|
|
2313 unreadchar (readcharfun, ch);
|
|
|
2314 #if 0
|
|
|
2315 return Fsignal (Qinvalid_read_syntax,
|
|
|
2316 list1 (build_string ("Comma outside of backquote")));
|
|
|
2317 #else
|
|
|
2318 /* #### - yuck....but this is reverse compatible. */
|
|
|
2319 /* mostly this is required by edebug, which does its own
|
|
|
2320 annotated reading. We need to have an annotated_read
|
|
|
2321 function that records (with markers) the buffer
|
|
|
2322 positions of the elements that make up lists, then that
|
|
|
2323 can be used in edebug and bytecomp and the check above
|
|
|
2324 can go back in. --Stig */
|
|
|
2325 break;
|
|
|
2326 #endif
|
|
|
2327 }
|
|
|
2328 }
|
|
|
2329 default:
|
|
|
2330 unreadchar (readcharfun, ch);
|
|
|
2331 } /* switch(ch) */
|
|
|
2332 #endif /* old backquote crap... */
|
|
|
2333 return read_list (readcharfun, ')', 1, 1);
|
|
|
2334 }
|
|
|
2335 case '[':
|
|
|
2336 return read_vector (readcharfun, ']');
|
|
|
2337
|
|
|
2338 case ')':
|
|
|
2339 case ']':
|
|
|
2340 /* #### - huh? these don't do what they seem... */
|
|
|
2341 return noseeum_cons (Qunbound, make_char (c));
|
|
|
2342 case '.':
|
|
|
2343 {
|
|
|
2344 #ifdef LISP_FLOAT_TYPE
|
|
|
2345 /* If a period is followed by a number, then we should read it
|
|
|
2346 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2347 pair.
|
|
|
2348 */
|
|
|
2349 c = readchar (readcharfun);
|
|
|
2350 unreadchar (readcharfun, c);
|
|
|
2351
|
|
|
2352 /* Can't use isdigit on Emchars */
|
|
|
2353 if (c < '0' || c > '9')
|
|
|
2354 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2355
|
|
|
2356 /* Note that read_atom will loop
|
|
|
2357 at least once, assuring that we will not try to UNREAD
|
|
|
2358 two characters in a row.
|
|
|
2359 (I think this doesn't matter anymore because there should
|
|
|
2360 be no more danger in unreading multiple characters) */
|
|
|
2361 return read_atom (readcharfun, '.', 0);
|
|
|
2362
|
|
|
2363 #else /* ! LISP_FLOAT_TYPE */
|
|
|
2364 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2365 #endif /* ! LISP_FLOAT_TYPE */
|
|
|
2366 }
|
|
|
2367
|
|
|
2368 case '#':
|
|
|
2369 {
|
|
|
2370 c = readchar (readcharfun);
|
|
|
2371 switch (c)
|
|
|
2372 {
|
|
|
2373 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2374 case '^':
|
|
|
2375 #endif
|
|
|
2376 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2377 case '&':
|
|
|
2378 #endif
|
|
|
2379 /* "#["-- byte-code constant syntax */
|
|
|
2380 /* purecons #[...] syntax */
|
|
|
2381 case '[': return read_compiled_function (readcharfun, ']'
|
|
|
2382 /*, purify_flag */ );
|
|
|
2383 /* "#:"-- gensym syntax */
|
|
|
2384 case ':': return read_atom (readcharfun, -1, 1);
|
|
|
2385 /* #'x => (function x) */
|
|
|
2386 case '\'': return list2 (Qfunction, read0 (readcharfun));
|
|
|
2387 #if 0
|
|
|
2388 /* RMS uses this syntax for fat-strings.
|
|
|
2389 If we use it for vectors, then obscure bugs happen.
|
|
|
2390 */
|
|
|
2391 /* "#(" -- Scheme/CL vector syntax */
|
|
|
2392 case '(': return read_vector (readcharfun, ')');
|
|
|
2393 #endif
|
|
|
2394 #if 0 /* FSFmacs */
|
|
|
2395 case '(':
|
|
|
2396 {
|
|
|
2397 Lisp_Object tmp;
|
|
|
2398 struct gcpro gcpro1;
|
|
|
2399
|
|
|
2400 /* Read the string itself. */
|
|
|
2401 tmp = read1 (readcharfun);
|
|
|
2402 if (!STRINGP (tmp))
|
|
|
2403 {
|
|
|
2404 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
|
2405 free_cons (XCONS (tmp));
|
|
|
2406 return Fsignal (Qinvalid_read_syntax,
|
|
|
2407 list1 (build_string ("#")));
|
|
|
2408 }
|
|
|
2409 GCPRO1 (tmp);
|
|
|
2410 /* Read the intervals and their properties. */
|
|
|
2411 while (1)
|
|
|
2412 {
|
|
|
2413 Lisp_Object beg, end, plist;
|
|
|
2414 Emchar ch;
|
|
|
2415 int invalid = 0;
|
|
|
2416
|
|
|
2417 beg = read1 (readcharfun);
|
|
|
2418 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2419 {
|
|
|
2420 ch = XCHAR (XCDR (beg));
|
|
|
2421 free_cons (XCONS (beg));
|
|
|
2422 if (ch == ')')
|
|
|
2423 break;
|
|
|
2424 else
|
|
|
2425 invalid = 1;
|
|
|
2426 }
|
|
|
2427 if (!invalid)
|
|
|
2428 {
|
|
|
2429 end = read1 (readcharfun);
|
|
|
2430 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2431 {
|
|
|
2432 free_cons (XCONS (end));
|
|
|
2433 invalid = 1;
|
|
|
2434 }
|
|
|
2435 }
|
|
|
2436 if (!invalid)
|
|
|
2437 {
|
|
|
2438 plist = read1 (readcharfun);
|
|
|
2439 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2440 {
|
|
|
2441 free_cons (XCONS (plist));
|
|
|
2442 invalid = 1;
|
|
|
2443 }
|
|
|
2444 }
|
|
|
2445 if (invalid)
|
|
|
2446 RETURN_UNGCPRO
|
|
|
2447 (Fsignal (Qinvalid_read_syntax,
|
|
|
2448 list2
|
|
|
2449 (build_string ("invalid string property list"),
|
|
|
2450 XCDR (plist))));
|
|
|
2451 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2452 }
|
|
|
2453 UNGCPRO;
|
|
|
2454 return tmp;
|
|
|
2455 }
|
|
|
2456 #endif /* 0 */
|
|
|
2457 case '@':
|
|
|
2458 {
|
|
|
2459 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2460 That's used in .elc files to skip over doc strings
|
|
|
2461 and function definitions. */
|
|
|
2462 int i, nskip = 0;
|
|
|
2463
|
|
|
2464 /* Read a decimal integer. */
|
|
|
2465 while ((c = readchar (readcharfun)) >= 0
|
|
|
2466 && c >= '0' && c <= '9')
|
|
|
2467 nskip = (10 * nskip) + (c - '0');
|
|
|
2468 if (c >= 0)
|
|
|
2469 unreadchar (readcharfun, c);
|
|
|
2470
|
|
|
2471 /* FSF has code here that maybe caches the skipped
|
|
|
2472 string. See above for why this is totally
|
|
|
2473 losing. We handle this differently. */
|
|
|
2474
|
|
|
2475 /* Skip that many characters. */
|
|
|
2476 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2477 c = readchar (readcharfun);
|
|
|
2478
|
|
|
2479 goto retry;
|
|
|
2480 }
|
|
|
2481 case '$': return Vload_file_name_internal;
|
|
|
2482 /* bit vectors */
|
|
|
2483 case '*': return read_bit_vector (readcharfun);
|
|
|
2484 /* #o10 => 8 -- octal constant syntax */
|
|
|
2485 case 'o': return read_integer (readcharfun, 8);
|
|
|
2486 /* #xdead => 57005 -- hex constant syntax */
|
|
|
2487 case 'x': return read_integer (readcharfun, 16);
|
|
|
2488 /* #b010 => 2 -- binary constant syntax */
|
|
|
2489 case 'b': return read_integer (readcharfun, 2);
|
|
|
2490 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
|
2491 case 's': return read_structure (readcharfun);
|
|
|
2492 case '<':
|
|
|
2493 {
|
|
|
2494 unreadchar (readcharfun, c);
|
|
|
2495 return Fsignal (Qinvalid_read_syntax,
|
|
|
2496 list1 (build_string ("Cannot read unreadable object")));
|
|
|
2497 }
|
|
|
2498 #ifdef FEATUREP_SYNTAX
|
|
|
2499 case '+':
|
|
|
2500 case '-':
|
|
|
2501 {
|
|
456
|
2502 Lisp_Object feature_exp, obj, tem;
|
|
428
|
2503 struct gcpro gcpro1, gcpro2;
|
|
|
2504
|
|
456
|
2505 feature_exp = read0(readcharfun);
|
|
428
|
2506 obj = read0(readcharfun);
|
|
|
2507
|
|
|
2508 /* the call to `featurep' may GC. */
|
|
456
|
2509 GCPRO2 (feature_exp, obj);
|
|
|
2510 tem = call1 (Qfeaturep, feature_exp);
|
|
428
|
2511 UNGCPRO;
|
|
|
2512
|
|
|
2513 if (c == '+' && NILP(tem)) goto retry;
|
|
|
2514 if (c == '-' && !NILP(tem)) goto retry;
|
|
|
2515 return obj;
|
|
|
2516 }
|
|
|
2517 #endif
|
|
|
2518 case '0': case '1': case '2': case '3': case '4':
|
|
|
2519 case '5': case '6': case '7': case '8': case '9':
|
|
|
2520 /* Reader forms that can reuse previously read objects. */
|
|
|
2521 {
|
|
|
2522 int n = 0;
|
|
|
2523 Lisp_Object found;
|
|
|
2524
|
|
|
2525 /* Using read_integer() here is impossible, because it
|
|
|
2526 chokes on `='. Using parse_integer() is too hard.
|
|
|
2527 So we simply read it in, and ignore overflows, which
|
|
|
2528 is safe. */
|
|
|
2529 while (c >= '0' && c <= '9')
|
|
|
2530 {
|
|
|
2531 n *= 10;
|
|
|
2532 n += c - '0';
|
|
|
2533 c = readchar (readcharfun);
|
|
|
2534 }
|
|
|
2535 found = assq_no_quit (make_int (n), Vread_objects);
|
|
|
2536 if (c == '=')
|
|
|
2537 {
|
|
|
2538 /* #n=object returns object, but associates it with
|
|
|
2539 n for #n#. */
|
|
|
2540 Lisp_Object obj;
|
|
|
2541 if (CONSP (found))
|
|
|
2542 return Fsignal (Qinvalid_read_syntax,
|
|
|
2543 list2 (build_translated_string
|
|
|
2544 ("Multiply defined symbol label"),
|
|
|
2545 make_int (n)));
|
|
|
2546 obj = read0 (readcharfun);
|
|
|
2547 Vread_objects = Fcons (Fcons (make_int (n), obj),
|
|
|
2548 Vread_objects);
|
|
|
2549 return obj;
|
|
|
2550 }
|
|
|
2551 else if (c == '#')
|
|
|
2552 {
|
|
|
2553 /* #n# returns a previously read object. */
|
|
|
2554 if (CONSP (found))
|
|
|
2555 return XCDR (found);
|
|
|
2556 else
|
|
|
2557 return Fsignal (Qinvalid_read_syntax,
|
|
|
2558 list2 (build_translated_string
|
|
|
2559 ("Undefined symbol label"),
|
|
|
2560 make_int (n)));
|
|
|
2561 }
|
|
|
2562 return Fsignal (Qinvalid_read_syntax,
|
|
|
2563 list1 (build_string ("#")));
|
|
|
2564 }
|
|
|
2565 default:
|
|
|
2566 {
|
|
|
2567 unreadchar (readcharfun, c);
|
|
|
2568 return Fsignal (Qinvalid_read_syntax,
|
|
|
2569 list1 (build_string ("#")));
|
|
|
2570 }
|
|
|
2571 }
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 /* Quote */
|
|
|
2575 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2576
|
|
|
2577 #ifdef LISP_BACKQUOTES
|
|
|
2578 case '`':
|
|
|
2579 {
|
|
|
2580 Lisp_Object tem;
|
|
|
2581 int speccount = specpdl_depth ();
|
|
|
2582 ++new_backquote_flag;
|
|
|
2583 record_unwind_protect (backquote_unwind,
|
|
|
2584 make_opaque_ptr (&new_backquote_flag));
|
|
|
2585 tem = read0 (readcharfun);
|
|
|
2586 unbind_to (speccount, Qnil);
|
|
|
2587 return list2 (Qbackquote, tem);
|
|
|
2588 }
|
|
|
2589
|
|
|
2590 case ',':
|
|
|
2591 {
|
|
|
2592 if (new_backquote_flag)
|
|
|
2593 {
|
|
|
2594 Lisp_Object comma_type = Qnil;
|
|
|
2595 int ch = readchar (readcharfun);
|
|
|
2596
|
|
|
2597 if (ch == '@')
|
|
|
2598 comma_type = Qcomma_at;
|
|
|
2599 else if (ch == '.')
|
|
|
2600 comma_type = Qcomma_dot;
|
|
|
2601 else
|
|
|
2602 {
|
|
|
2603 if (ch >= 0)
|
|
|
2604 unreadchar (readcharfun, ch);
|
|
|
2605 comma_type = Qcomma;
|
|
|
2606 }
|
|
|
2607 return list2 (comma_type, read0 (readcharfun));
|
|
|
2608 }
|
|
|
2609 else
|
|
|
2610 {
|
|
|
2611 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2612 Thing(tm) is to signal an error here, because it's
|
|
|
2613 really invalid read syntax. Instead, this permits
|
|
|
2614 commas to begin symbols (unless they're inside
|
|
|
2615 backquotes). If an error is signalled here in the
|
|
|
2616 future, then commas should be invalid read syntax
|
|
|
2617 outside of backquotes anywhere they're found (i.e.
|
|
|
2618 they must be quoted in symbols) -- Stig */
|
|
|
2619 return read_atom (readcharfun, c, 0);
|
|
|
2620 }
|
|
|
2621 }
|
|
|
2622 #endif
|
|
|
2623
|
|
|
2624 case '?':
|
|
|
2625 {
|
|
|
2626 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2627 c = readchar (readcharfun);
|
|
|
2628 if (c < 0)
|
|
|
2629 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2630
|
|
|
2631 if (c == '\\')
|
|
|
2632 c = read_escape (readcharfun);
|
|
|
2633 return make_char (c);
|
|
|
2634 }
|
|
|
2635
|
|
|
2636 case '\"':
|
|
|
2637 {
|
|
|
2638 /* String */
|
|
|
2639 #ifdef I18N3
|
|
|
2640 /* #### If the input stream is translating, then the string
|
|
|
2641 should be marked as translatable by setting its
|
|
|
2642 `string-translatable' property to t. .el and .elc files
|
|
|
2643 normally are translating input streams. See Fgettext()
|
|
|
2644 and print_internal(). */
|
|
|
2645 #endif
|
|
|
2646 int cancel = 0;
|
|
|
2647
|
|
|
2648 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2649 while ((c = readchar (readcharfun)) >= 0
|
|
|
2650 && c != '\"')
|
|
|
2651 {
|
|
|
2652 if (c == '\\')
|
|
|
2653 c = read_escape (readcharfun);
|
|
|
2654 /* c is -1 if \ newline has just been seen */
|
|
|
2655 if (c == -1)
|
|
|
2656 {
|
|
|
2657 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2658 cancel = 1;
|
|
|
2659 }
|
|
|
2660 else
|
|
|
2661 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
2662 QUIT;
|
|
|
2663 }
|
|
|
2664 if (c < 0)
|
|
|
2665 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2666
|
|
|
2667 /* If purifying, and string starts with \ newline,
|
|
|
2668 return zero instead. This is for doc strings
|
|
|
2669 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2670 if (purify_flag && NILP (Vinternal_doc_file_name) && cancel)
|
|
|
2671 return Qzero;
|
|
|
2672
|
|
|
2673 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2674 return
|
|
|
2675 make_string
|
|
|
2676 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2677 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2678 }
|
|
|
2679
|
|
|
2680 default:
|
|
|
2681 {
|
|
|
2682 /* Ignore whitespace and control characters */
|
|
|
2683 if (c <= 040)
|
|
|
2684 goto retry;
|
|
|
2685 return read_atom (readcharfun, c, 0);
|
|
|
2686 }
|
|
|
2687 }
|
|
|
2688 }
|
|
|
2689
|
|
|
2690
|
|
|
2691
|
|
|
2692 #ifdef LISP_FLOAT_TYPE
|
|
|
2693
|
|
|
2694 #define LEAD_INT 1
|
|
|
2695 #define DOT_CHAR 2
|
|
|
2696 #define TRAIL_INT 4
|
|
|
2697 #define E_CHAR 8
|
|
|
2698 #define EXP_INT 16
|
|
|
2699
|
|
|
2700 int
|
|
442
|
2701 isfloat_string (const char *cp)
|
|
428
|
2702 {
|
|
|
2703 int state = 0;
|
|
442
|
2704 const Bufbyte *ucp = (const Bufbyte *) cp;
|
|
428
|
2705
|
|
|
2706 if (*ucp == '+' || *ucp == '-')
|
|
|
2707 ucp++;
|
|
|
2708
|
|
|
2709 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2710 {
|
|
|
2711 state |= LEAD_INT;
|
|
|
2712 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2713 ucp++;
|
|
|
2714 }
|
|
|
2715 if (*ucp == '.')
|
|
|
2716 {
|
|
|
2717 state |= DOT_CHAR;
|
|
|
2718 ucp++;
|
|
|
2719 }
|
|
|
2720 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2721 {
|
|
|
2722 state |= TRAIL_INT;
|
|
|
2723 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2724 ucp++;
|
|
|
2725 }
|
|
|
2726 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2727 {
|
|
|
2728 state |= E_CHAR;
|
|
|
2729 ucp++;
|
|
|
2730 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2731 ucp++;
|
|
|
2732 }
|
|
|
2733
|
|
|
2734 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2735 {
|
|
|
2736 state |= EXP_INT;
|
|
|
2737 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2738 ucp++;
|
|
|
2739 }
|
|
|
2740 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2741 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2742 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2743 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2744 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2745 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2746 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2747 }
|
|
|
2748 #endif /* LISP_FLOAT_TYPE */
|
|
|
2749
|
|
|
2750 static void *
|
|
|
2751 sequence_reader (Lisp_Object readcharfun,
|
|
|
2752 Emchar terminator,
|
|
|
2753 void *state,
|
|
|
2754 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2755 void *state, Charcount len))
|
|
|
2756 {
|
|
|
2757 Charcount len;
|
|
|
2758
|
|
|
2759 for (len = 0; ; len++)
|
|
|
2760 {
|
|
|
2761 Emchar ch;
|
|
|
2762
|
|
|
2763 QUIT;
|
|
|
2764 ch = reader_nextchar (readcharfun);
|
|
|
2765
|
|
|
2766 if (ch == terminator)
|
|
|
2767 return state;
|
|
|
2768 else
|
|
|
2769 unreadchar (readcharfun, ch);
|
|
|
2770 #ifdef FEATUREP_SYNTAX
|
|
|
2771 if (ch == ']')
|
|
442
|
2772 read_syntax_error ("\"]\" in a list");
|
|
428
|
2773 else if (ch == ')')
|
|
442
|
2774 read_syntax_error ("\")\" in a vector");
|
|
428
|
2775 #endif
|
|
|
2776 state = ((conser) (readcharfun, state, len));
|
|
|
2777 }
|
|
|
2778 }
|
|
|
2779
|
|
|
2780
|
|
|
2781 struct read_list_state
|
|
|
2782 {
|
|
|
2783 Lisp_Object head;
|
|
|
2784 Lisp_Object tail;
|
|
|
2785 int length;
|
|
|
2786 int allow_dotted_lists;
|
|
|
2787 Emchar terminator;
|
|
|
2788 };
|
|
|
2789
|
|
|
2790 static void *
|
|
|
2791 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2792 {
|
|
|
2793 struct read_list_state *s = (struct read_list_state *) state;
|
|
|
2794 Lisp_Object elt;
|
|
|
2795
|
|
|
2796 elt = read1 (readcharfun);
|
|
|
2797
|
|
|
2798 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2799 {
|
|
|
2800 Lisp_Object tem = elt;
|
|
|
2801 Emchar ch;
|
|
|
2802
|
|
|
2803 elt = XCDR (elt);
|
|
|
2804 free_cons (XCONS (tem));
|
|
|
2805 tem = Qnil;
|
|
|
2806 ch = XCHAR (elt);
|
|
|
2807 #ifdef FEATUREP_SYNTAX
|
|
|
2808 if (ch == s->terminator) /* deal with #+, #- reader macros */
|
|
|
2809 {
|
|
|
2810 unreadchar (readcharfun, s->terminator);
|
|
|
2811 goto done;
|
|
|
2812 }
|
|
|
2813 else if (ch == ']')
|
|
442
|
2814 read_syntax_error ("']' in a list");
|
|
428
|
2815 else if (ch == ')')
|
|
442
|
2816 read_syntax_error ("')' in a vector");
|
|
428
|
2817 else
|
|
|
2818 #endif
|
|
|
2819 if (ch != '.')
|
|
563
|
2820 signal_error (Qinternal_error, "BUG! Internal reader error", elt);
|
|
428
|
2821 else if (!s->allow_dotted_lists)
|
|
442
|
2822 read_syntax_error ("\".\" in a vector");
|
|
428
|
2823 else
|
|
|
2824 {
|
|
|
2825 if (!NILP (s->tail))
|
|
|
2826 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2827 else
|
|
|
2828 s->head = read0 (readcharfun);
|
|
|
2829 elt = read1 (readcharfun);
|
|
|
2830 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2831 {
|
|
|
2832 ch = XCHAR (XCDR (elt));
|
|
|
2833 free_cons (XCONS (elt));
|
|
|
2834 if (ch == s->terminator)
|
|
|
2835 {
|
|
|
2836 unreadchar (readcharfun, s->terminator);
|
|
|
2837 goto done;
|
|
|
2838 }
|
|
|
2839 }
|
|
442
|
2840 read_syntax_error (". in wrong context");
|
|
428
|
2841 }
|
|
|
2842 }
|
|
|
2843
|
|
|
2844 #if 0 /* FSFmacs defun hack, or something ... */
|
|
|
2845 if (NILP (tail) && defun_hack && EQ (elt, Qdefun) && !read_pure)
|
|
|
2846 {
|
|
|
2847 record_unwind_protect (unreadpure, Qzero);
|
|
|
2848 read_pure = 1;
|
|
|
2849 }
|
|
|
2850 #endif
|
|
|
2851
|
|
|
2852 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2853 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2854 {
|
|
|
2855 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2856 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2857 else
|
|
|
2858 Vcurrent_compiled_function_annotation = elt;
|
|
|
2859 }
|
|
|
2860 #endif
|
|
|
2861
|
|
|
2862 elt = Fcons (elt, Qnil);
|
|
|
2863 if (!NILP (s->tail))
|
|
|
2864 XCDR (s->tail) = elt;
|
|
|
2865 else
|
|
|
2866 s->head = elt;
|
|
|
2867 s->tail = elt;
|
|
|
2868 done:
|
|
|
2869 s->length++;
|
|
|
2870 return s;
|
|
|
2871 }
|
|
|
2872
|
|
|
2873
|
|
|
2874 #if 0 /* FSFmacs defun hack */
|
|
|
2875 /* -1 for allow_dotted_lists means allow_dotted_lists and check
|
|
|
2876 for starting with defun and make structure pure. */
|
|
|
2877 #endif
|
|
|
2878
|
|
|
2879 static Lisp_Object
|
|
|
2880 read_list (Lisp_Object readcharfun,
|
|
|
2881 Emchar terminator,
|
|
|
2882 int allow_dotted_lists,
|
|
|
2883 int check_for_doc_references)
|
|
|
2884 {
|
|
|
2885 struct read_list_state s;
|
|
|
2886 struct gcpro gcpro1, gcpro2;
|
|
|
2887 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2888 Lisp_Object old_compiled_function_annotation =
|
|
|
2889 Vcurrent_compiled_function_annotation;
|
|
|
2890 #endif
|
|
|
2891
|
|
|
2892 s.head = Qnil;
|
|
|
2893 s.tail = Qnil;
|
|
|
2894 s.length = 0;
|
|
|
2895 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2896 s.terminator = terminator;
|
|
|
2897 GCPRO2 (s.head, s.tail);
|
|
|
2898
|
|
|
2899 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2900 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2901 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2902 #endif
|
|
|
2903
|
|
|
2904 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2905 {
|
|
|
2906 /* check now for any doc string references and record them
|
|
|
2907 for later. */
|
|
|
2908 Lisp_Object tail;
|
|
|
2909
|
|
|
2910 /* We might be dealing with an imperfect list so don't
|
|
|
2911 use LIST_LOOP */
|
|
|
2912 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2913 {
|
|
|
2914 Lisp_Object holding_cons = Qnil;
|
|
|
2915
|
|
|
2916 {
|
|
|
2917 Lisp_Object elem = XCAR (tail);
|
|
|
2918 /* elem might be (#$ . INT) ... */
|
|
|
2919 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2920 holding_cons = tail;
|
|
|
2921 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2922 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2923 `autoload' (autoload evaluates its arguments, while
|
|
|
2924 `defvar', `defun', etc. don't). */
|
|
|
2925 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2926 && CONSP (XCDR (elem)))
|
|
|
2927 {
|
|
|
2928 elem = XCAR (XCDR (elem));
|
|
|
2929 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2930 holding_cons = XCDR (XCAR (tail));
|
|
|
2931 }
|
|
|
2932 }
|
|
|
2933
|
|
|
2934 if (CONSP (holding_cons))
|
|
|
2935 {
|
|
|
2936 if (purify_flag)
|
|
|
2937 {
|
|
|
2938 if (NILP (Vinternal_doc_file_name))
|
|
|
2939 /* We have not yet called Snarf-documentation, so
|
|
|
2940 assume this file is described in the DOC file
|
|
|
2941 and Snarf-documentation will fill in the right
|
|
|
2942 value later. For now, replace the whole list
|
|
|
2943 with 0. */
|
|
|
2944 XCAR (holding_cons) = Qzero;
|
|
|
2945 else
|
|
|
2946 /* We have already called Snarf-documentation, so
|
|
|
2947 make a relative file name for this file, so it
|
|
|
2948 can be found properly in the installed Lisp
|
|
|
2949 directory. We don't use Fexpand_file_name
|
|
|
2950 because that would make the directory absolute
|
|
|
2951 now. */
|
|
|
2952 XCAR (XCAR (holding_cons)) =
|
|
|
2953 concat2 (build_string ("../lisp/"),
|
|
|
2954 Ffile_name_nondirectory
|
|
|
2955 (Vload_file_name_internal));
|
|
|
2956 }
|
|
|
2957 else
|
|
|
2958 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2959 and the string will be filled in properly in
|
|
|
2960 load_force_doc_string_unwind(). */
|
|
|
2961 Vload_force_doc_string_list =
|
|
|
2962 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2963 can modify it in-place. */
|
|
|
2964 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2965 }
|
|
|
2966 }
|
|
|
2967 }
|
|
|
2968
|
|
|
2969 UNGCPRO;
|
|
|
2970 return s.head;
|
|
|
2971 }
|
|
|
2972
|
|
|
2973 static Lisp_Object
|
|
|
2974 read_vector (Lisp_Object readcharfun,
|
|
|
2975 Emchar terminator)
|
|
|
2976 {
|
|
|
2977 Lisp_Object tem;
|
|
|
2978 Lisp_Object *p;
|
|
|
2979 int len;
|
|
|
2980 int i;
|
|
|
2981 struct read_list_state s;
|
|
|
2982 struct gcpro gcpro1, gcpro2;
|
|
|
2983
|
|
|
2984 s.head = Qnil;
|
|
|
2985 s.tail = Qnil;
|
|
|
2986 s.length = 0;
|
|
|
2987 s.allow_dotted_lists = 0;
|
|
|
2988 GCPRO2 (s.head, s.tail);
|
|
|
2989
|
|
|
2990 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2991
|
|
|
2992 UNGCPRO;
|
|
|
2993 tem = s.head;
|
|
|
2994 len = XINT (Flength (tem));
|
|
|
2995
|
|
|
2996 #if 0 /* FSFmacs defun hack */
|
|
|
2997 if (read_pure)
|
|
|
2998 s.head = make_pure_vector (len, Qnil);
|
|
|
2999 else
|
|
|
3000 #endif
|
|
|
3001 s.head = make_vector (len, Qnil);
|
|
|
3002
|
|
|
3003 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]);
|
|
|
3004 i < len;
|
|
|
3005 i++, p++)
|
|
|
3006 {
|
|
440
|
3007 Lisp_Cons *otem = XCONS (tem);
|
|
428
|
3008 tem = Fcar (tem);
|
|
|
3009 *p = tem;
|
|
|
3010 tem = otem->cdr;
|
|
|
3011 free_cons (otem);
|
|
|
3012 }
|
|
|
3013 return s.head;
|
|
|
3014 }
|
|
|
3015
|
|
|
3016 static Lisp_Object
|
|
|
3017 read_compiled_function (Lisp_Object readcharfun, Emchar terminator)
|
|
|
3018 {
|
|
|
3019 /* Accept compiled functions at read-time so that we don't
|
|
|
3020 have to build them at load-time. */
|
|
|
3021 Lisp_Object stuff;
|
|
|
3022 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
3023 struct gcpro gcpro1;
|
|
|
3024 int len;
|
|
|
3025 int iii;
|
|
|
3026 int saw_a_doc_ref = 0;
|
|
|
3027
|
|
|
3028 /* Note: we tell read_list not to search for doc references
|
|
|
3029 because we need to handle the "doc reference" for the
|
|
|
3030 instructions and constants differently. */
|
|
|
3031 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
3032 len = XINT (Flength (stuff));
|
|
|
3033 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
3034 return
|
|
442
|
3035 continuable_read_syntax_error ("#[...] used with wrong number of elements");
|
|
428
|
3036
|
|
|
3037 for (iii = 0; CONSP (stuff); iii++)
|
|
|
3038 {
|
|
440
|
3039 Lisp_Cons *victim = XCONS (stuff);
|
|
428
|
3040 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
3041 if ((purify_flag || load_force_doc_strings)
|
|
|
3042 && CONSP (make_byte_code_args[iii])
|
|
|
3043 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
3044 {
|
|
|
3045 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
3046 {
|
|
|
3047 /* same as in read_list(). */
|
|
|
3048 if (NILP (Vinternal_doc_file_name))
|
|
|
3049 make_byte_code_args[iii] = Qzero;
|
|
|
3050 else
|
|
|
3051 XCAR (make_byte_code_args[iii]) =
|
|
|
3052 concat2 (build_string ("../lisp/"),
|
|
|
3053 Ffile_name_nondirectory
|
|
|
3054 (Vload_file_name_internal));
|
|
|
3055 }
|
|
|
3056 else
|
|
|
3057 saw_a_doc_ref = 1;
|
|
|
3058 }
|
|
|
3059 stuff = Fcdr (stuff);
|
|
|
3060 free_cons (victim);
|
|
|
3061 }
|
|
|
3062 GCPRO1 (make_byte_code_args[0]);
|
|
|
3063 gcpro1.nvars = len;
|
|
|
3064
|
|
|
3065 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
3066 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2]))
|
|
|
3067 ebolify_bytecode_constants (make_byte_code_args[2]);
|
|
|
3068
|
|
|
3069 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
3070 * value as our "read-pure" argument */
|
|
|
3071 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
|
3072 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20);
|
|
|
3073 if (saw_a_doc_ref)
|
|
|
3074 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
3075 UNGCPRO;
|
|
|
3076 return stuff;
|
|
|
3077 }
|
|
|
3078
|
|
|
3079
|
|
|
3080
|
|
|
3081 void
|
|
|
3082 init_lread (void)
|
|
|
3083 {
|
|
|
3084 Vvalues = Qnil;
|
|
|
3085
|
|
|
3086 load_in_progress = 0;
|
|
|
3087
|
|
|
3088 Vload_descriptor_list = Qnil;
|
|
|
3089
|
|
|
3090 /* kludge: locate-file does not work for a null load-path, even if
|
|
|
3091 the file name is absolute. */
|
|
|
3092
|
|
|
3093 Vload_path = Fcons (build_string (""), Qnil);
|
|
|
3094
|
|
|
3095 /* This used to get initialized in init_lread because all streams
|
|
|
3096 got closed when dumping occurs. This is no longer true --
|
|
|
3097 Vread_buffer_stream is a resizing output stream, and there is no
|
|
|
3098 reason to close it at dump-time.
|
|
|
3099
|
|
|
3100 Vread_buffer_stream is set to Qnil in vars_of_lread, and this
|
|
|
3101 will initialize it only once, at dump-time. */
|
|
|
3102 if (NILP (Vread_buffer_stream))
|
|
|
3103 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
|
3104
|
|
|
3105 Vload_force_doc_string_list = Qnil;
|
|
|
3106 }
|
|
|
3107
|
|
|
3108 void
|
|
|
3109 syms_of_lread (void)
|
|
|
3110 {
|
|
|
3111 DEFSUBR (Fread);
|
|
|
3112 DEFSUBR (Fread_from_string);
|
|
|
3113 DEFSUBR (Fload_internal);
|
|
|
3114 DEFSUBR (Flocate_file);
|
|
|
3115 DEFSUBR (Flocate_file_clear_hashing);
|
|
|
3116 DEFSUBR (Feval_buffer);
|
|
|
3117 DEFSUBR (Feval_region);
|
|
|
3118
|
|
563
|
3119 DEFSYMBOL (Qstandard_input);
|
|
|
3120 DEFSYMBOL (Qread_char);
|
|
|
3121 DEFSYMBOL (Qcurrent_load_list);
|
|
|
3122 DEFSYMBOL (Qload);
|
|
|
3123 DEFSYMBOL (Qload_file_name);
|
|
|
3124 DEFSYMBOL (Qfset);
|
|
428
|
3125
|
|
|
3126 #ifdef LISP_BACKQUOTES
|
|
563
|
3127 DEFSYMBOL (Qbackquote);
|
|
428
|
3128 defsymbol (&Qbacktick, "`");
|
|
|
3129 defsymbol (&Qcomma, ",");
|
|
|
3130 defsymbol (&Qcomma_at, ",@");
|
|
|
3131 defsymbol (&Qcomma_dot, ",.");
|
|
|
3132 #endif
|
|
|
3133
|
|
563
|
3134 DEFSYMBOL (Qexists);
|
|
|
3135 DEFSYMBOL (Qreadable);
|
|
|
3136 DEFSYMBOL (Qwritable);
|
|
|
3137 DEFSYMBOL (Qexecutable);
|
|
428
|
3138 }
|
|
|
3139
|
|
|
3140 void
|
|
|
3141 structure_type_create (void)
|
|
|
3142 {
|
|
|
3143 the_structure_type_dynarr = Dynarr_new (structure_type);
|
|
|
3144 }
|
|
|
3145
|
|
|
3146 void
|
|
|
3147 reinit_vars_of_lread (void)
|
|
|
3148 {
|
|
|
3149 Vread_buffer_stream = Qnil;
|
|
|
3150 staticpro_nodump (&Vread_buffer_stream);
|
|
|
3151 }
|
|
|
3152
|
|
|
3153 void
|
|
|
3154 vars_of_lread (void)
|
|
|
3155 {
|
|
|
3156 reinit_vars_of_lread ();
|
|
|
3157
|
|
|
3158 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
3159 List of values of all expressions which were read, evaluated and printed.
|
|
|
3160 Order is reverse chronological.
|
|
|
3161 */ );
|
|
|
3162
|
|
|
3163 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
3164 Stream for read to get input from.
|
|
|
3165 See documentation of `read' for possible values.
|
|
|
3166 */ );
|
|
|
3167 Vstandard_input = Qt;
|
|
|
3168
|
|
|
3169 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
3170 *List of directories to search for files to load.
|
|
|
3171 Each element is a string (directory name) or nil (try default directory).
|
|
|
3172
|
|
|
3173 Note that the elements of this list *may not* begin with "~", so you must
|
|
|
3174 call `expand-file-name' on them before adding them to this list.
|
|
|
3175
|
|
|
3176 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
3177 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
3178 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
3179 value for this variable by looking around in the file-system near the
|
|
|
3180 directory in which the XEmacs executable resides.
|
|
|
3181 */ );
|
|
|
3182 Vload_path = Qnil;
|
|
|
3183
|
|
|
3184 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
3185 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
3186
|
|
|
3187 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
3188 Non-nil iff inside of `load'.
|
|
|
3189 */ );
|
|
|
3190
|
|
|
3191 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
3192 An alist of expressions to be evalled when particular files are loaded.
|
|
|
3193 Each element looks like (FILENAME FORMS...).
|
|
|
3194 When `load' is run and the file-name argument is FILENAME,
|
|
|
3195 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
3196
|
|
|
3197 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
3198 with no directory specified, since that is how `load' is normally called.
|
|
|
3199 An error in FORMS does not undo the load,
|
|
|
3200 but does prevent execution of the rest of the FORMS.
|
|
|
3201 */ );
|
|
|
3202 Vafter_load_alist = Qnil;
|
|
|
3203
|
|
|
3204 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
3205 *Whether `load' should check whether the source is newer than the binary.
|
|
|
3206 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
3207 corresponding `.el' is newer, a warning message will be printed.
|
|
|
3208 */ );
|
|
|
3209 load_warn_when_source_newer = 0;
|
|
|
3210
|
|
|
3211 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
3212 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
3213 If this variable is true, then when `load' is called with a filename without
|
|
|
3214 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
3215 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
3216 no warning will be printed.
|
|
|
3217 */ );
|
|
|
3218 load_warn_when_source_only = 0;
|
|
|
3219
|
|
|
3220 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
3221 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
3222 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
3223 */ );
|
|
|
3224 load_ignore_elc_files = 0;
|
|
|
3225
|
|
|
3226 #ifdef LOADHIST
|
|
|
3227 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
3228 Alist mapping source file names to symbols and features.
|
|
|
3229 Each alist element is a list that starts with a file name,
|
|
|
3230 except for one element (optional) that starts with nil and describes
|
|
|
3231 definitions evaluated from buffers not visiting files.
|
|
|
3232 The remaining elements of each list are symbols defined as functions
|
|
|
3233 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
3234 */ );
|
|
|
3235 Vload_history = Qnil;
|
|
|
3236
|
|
|
3237 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
3238 Used for internal purposes by `load'.
|
|
|
3239 */ );
|
|
|
3240 Vcurrent_load_list = Qnil;
|
|
|
3241 #endif
|
|
|
3242
|
|
|
3243 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
3244 Full name of file being loaded by `load'.
|
|
|
3245 */ );
|
|
|
3246 Vload_file_name = Qnil;
|
|
|
3247
|
|
|
3248 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
3249 Function used by `load' and `eval-region' for reading expressions.
|
|
|
3250 The default is nil, which means use the function `read'.
|
|
|
3251 */ );
|
|
|
3252 Vload_read_function = Qnil;
|
|
|
3253
|
|
|
3254 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
3255 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
3256 This is useful when the file being loaded is a temporary copy.
|
|
|
3257 */ );
|
|
|
3258 load_force_doc_strings = 0;
|
|
|
3259
|
|
|
3260 /* See read_escape(). */
|
|
|
3261 #if 0
|
|
|
3262 /* Used to be named `puke-on-fsf-keys' */
|
|
|
3263 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes",
|
|
|
3264 &fail_on_bucky_bit_character_escapes /*
|
|
|
3265 Whether `read' should signal an error when it encounters unsupported
|
|
|
3266 character escape syntaxes or just read them incorrectly.
|
|
|
3267 */ );
|
|
|
3268 fail_on_bucky_bit_character_escapes = 0;
|
|
|
3269 #endif
|
|
|
3270
|
|
|
3271 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3272 with values saved when the image is dumped. */
|
|
|
3273 staticpro (&Vload_descriptor_list);
|
|
|
3274
|
|
|
3275 /* Initialized in init_lread. */
|
|
|
3276 staticpro (&Vload_force_doc_string_list);
|
|
|
3277
|
|
|
3278 Vload_file_name_internal = Qnil;
|
|
|
3279 staticpro (&Vload_file_name_internal);
|
|
|
3280
|
|
|
3281 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3282 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3283
|
|
|
3284 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3285 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3286 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3287 #endif
|
|
|
3288
|
|
|
3289 /* So that early-early stuff will work */
|
|
|
3290 Ffset (Qload, intern ("load-internal"));
|
|
|
3291
|
|
|
3292 #ifdef FEATUREP_SYNTAX
|
|
563
|
3293 DEFSYMBOL (Qfeaturep);
|
|
428
|
3294 Fprovide(intern("xemacs"));
|
|
|
3295 #ifdef INFODOCK
|
|
|
3296 Fprovide(intern("infodock"));
|
|
|
3297 #endif /* INFODOCK */
|
|
|
3298 #endif /* FEATUREP_SYNTAX */
|
|
|
3299
|
|
|
3300 #ifdef LISP_BACKQUOTES
|
|
|
3301 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3302 #endif
|
|
|
3303
|
|
|
3304 #ifdef I18N3
|
|
|
3305 Vfile_domain = Qnil;
|
|
|
3306 #endif
|
|
|
3307
|
|
|
3308 Vread_objects = Qnil;
|
|
|
3309 staticpro (&Vread_objects);
|
|
|
3310
|
|
|
3311 Vlocate_file_hash_table = make_lisp_hash_table (200,
|
|
|
3312 HASH_TABLE_NON_WEAK,
|
|
|
3313 HASH_TABLE_EQUAL);
|
|
|
3314 staticpro (&Vlocate_file_hash_table);
|
|
|
3315 #ifdef DEBUG_XEMACS
|
|
|
3316 symbol_value (XSYMBOL (intern ("Vlocate-file-hash-table")))
|
|
|
3317 = Vlocate_file_hash_table;
|
|
|
3318 #endif
|
|
|
3319 }
|
