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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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780
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4 Copyright (C) 1996, 2001, 2002 Ben Wing.
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428
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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 #include "file-coding.h"
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36
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37 #include "sysfile.h"
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38 #include "sysfloat.h"
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771
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39 #ifdef WIN32_NATIVE
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40 #include "syswindows.h"
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41 #endif
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428
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42
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43 Lisp_Object Qread_char, Qstandard_input;
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44 Lisp_Object Qvariable_documentation;
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45 #define LISP_BACKQUOTES
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46 #ifdef LISP_BACKQUOTES
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47 /*
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48 Nonzero means inside a new-style backquote
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49 with no surrounding parentheses.
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50 Fread initializes this to zero, so we need not specbind it
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51 or worry about what happens to it when there is an error.
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52
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53 XEmacs:
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54 Nested backquotes are perfectly legal and fail utterly with
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55 this silliness. */
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56 static int new_backquote_flag, old_backquote_flag;
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57 Lisp_Object Qbackquote, Qbacktick, Qcomma, Qcomma_at, Qcomma_dot;
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58 #endif
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59 Lisp_Object Qvariable_domain; /* I18N3 */
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60 Lisp_Object Vvalues, Vstandard_input, Vafter_load_alist;
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61 Lisp_Object Qcurrent_load_list;
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62 Lisp_Object Qload, Qload_file_name;
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63 Lisp_Object Qfset;
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64
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65 /* Hash-table that maps directory names to hashes of their contents. */
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66 static Lisp_Object Vlocate_file_hash_table;
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67
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68 Lisp_Object Qexists, Qreadable, Qwritable, Qexecutable;
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69
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70 /* See read_escape() for an explanation of this. */
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71 #if 0
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72 int fail_on_bucky_bit_character_escapes;
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73 #endif
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74
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75 /* This symbol is also used in fns.c */
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76 #define FEATUREP_SYNTAX
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77
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78 #ifdef FEATUREP_SYNTAX
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79 Lisp_Object Qfeaturep;
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80 #endif
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81
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82 /* non-zero if inside `load' */
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83 int load_in_progress;
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84
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85 /* Whether Fload_internal() should check whether the .el is newer
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86 when loading .elc */
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87 int load_warn_when_source_newer;
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88 /* Whether Fload_internal() should check whether the .elc doesn't exist */
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89 int load_warn_when_source_only;
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90 /* Whether Fload_internal() should ignore .elc files when no suffix is given */
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91 int load_ignore_elc_files;
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1123
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92 /* Whether Fload_internal() should ignore out-of-date .elc files when no
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93 suffix is given */
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94 int load_ignore_out_of_date_elc_files;
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95 /* Always display messages showing when a file is loaded, regardless of
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96 whether the flag to `load' tries to suppress them. */
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97 int load_always_display_messages;
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98 /* Show the full path in loading messages. */
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99 int load_show_full_path_in_messages;
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428
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100
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101 /* Search path for files to be loaded. */
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102 Lisp_Object Vload_path;
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103
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104 /* Search path for files when dumping. */
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105 /* Lisp_Object Vdump_load_path; */
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106
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107 /* This is the user-visible association list that maps features to
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108 lists of defs in their load files. */
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109 Lisp_Object Vload_history;
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110
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111 /* This is used to build the load history. */
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112 Lisp_Object Vcurrent_load_list;
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113
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114 /* Name of file actually being read by `load'. */
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115 Lisp_Object Vload_file_name;
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116
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117 /* Same as Vload_file_name but not Lisp-accessible. This ensures that
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118 our #$ checks are reliable. */
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119 Lisp_Object Vload_file_name_internal;
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120
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121 Lisp_Object Vload_file_name_internal_the_purecopy;
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122
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123 /* Function to use for reading, in `load' and friends. */
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124 Lisp_Object Vload_read_function;
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125
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126 /* The association list of objects read with the #n=object form.
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127 Each member of the list has the form (n . object), and is used to
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128 look up the object for the corresponding #n# construct.
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129 It must be set to nil before all top-level calls to read0. */
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130 Lisp_Object Vread_objects;
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131
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132 /* Nonzero means load should forcibly load all dynamic doc strings. */
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133 /* Note that this always happens (with some special behavior) when
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134 purify_flag is set. */
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135 static int load_force_doc_strings;
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136
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137 /* List of descriptors now open for Fload_internal. */
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138 static Lisp_Object Vload_descriptor_list;
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139
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140 /* In order to implement "load_force_doc_strings", we keep
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141 a list of all the compiled-function objects and such
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142 that we have created in the process of loading this file.
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143 See the rant below.
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144
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145 We specbind this just like Vload_file_name, so there's no
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146 problems with recursive loading. */
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147 static Lisp_Object Vload_force_doc_string_list;
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148
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149 /* A resizing-buffer stream used to temporarily hold data while reading */
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150 static Lisp_Object Vread_buffer_stream;
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151
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152 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
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153 Lisp_Object Vcurrent_compiled_function_annotation;
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154 #endif
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155
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156 static int load_byte_code_version;
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157
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158 /* An array describing all known built-in structure types */
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159 static structure_type_dynarr *the_structure_type_dynarr;
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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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814
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198 doc strings at once. --ben */
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428
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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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|
1123
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210 static int locate_file_open_or_access_file (Ibyte *fn, int access_mode);
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428
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211 EXFUN (Fread_from_string, 3);
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212
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213 /* When errors are signaled, the actual readcharfun should not be used
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214 as an argument if it is an lstream, so that lstreams don't escape
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215 to the Lisp level. */
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216 #define READCHARFUN_MAYBE(x) (LSTREAMP (x) \
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771
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217 ? (build_msg_string ("internal input stream")) \
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428
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218 : (x))
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219
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220
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221 static DOESNT_RETURN
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442
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222 read_syntax_error (const char *string)
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428
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223 {
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563
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224 signal_error (Qinvalid_read_syntax, string, Qunbound);
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428
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225 }
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226
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227 static Lisp_Object
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442
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228 continuable_read_syntax_error (const char *string)
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428
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229 {
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563
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230 return signal_continuable_error (Qinvalid_read_syntax, string, Qunbound);
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428
|
231 }
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232
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233
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234 /* Handle unreading and rereading of characters. */
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867
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235 static Ichar
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428
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236 readchar (Lisp_Object readcharfun)
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237 {
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238 /* This function can GC */
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239
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240 if (BUFFERP (readcharfun))
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241 {
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867
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242 Ichar c;
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428
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243 struct buffer *b = XBUFFER (readcharfun);
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244
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245 if (!BUFFER_LIVE_P (b))
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563
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246 invalid_operation ("Reading from killed buffer", Qunbound);
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428
|
247
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248 if (BUF_PT (b) >= BUF_ZV (b))
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249 return -1;
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250 c = BUF_FETCH_CHAR (b, BUF_PT (b));
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251 BUF_SET_PT (b, BUF_PT (b) + 1);
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252
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253 return c;
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254 }
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255 else if (LSTREAMP (readcharfun))
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256 {
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|
867
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257 Ichar c = Lstream_get_ichar (XLSTREAM (readcharfun));
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428
|
258 #ifdef DEBUG_XEMACS /* testing Mule */
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259 static int testing_mule = 0; /* Change via debugger */
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444
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260 if (testing_mule)
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261 {
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262 if (c >= 0x20 && c <= 0x7E) stderr_out ("%c", c);
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263 else if (c == '\n') stderr_out ("\\n\n");
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264 else stderr_out ("\\%o ", c);
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265 }
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266 #endif /* testing Mule */
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428
|
267 return c;
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268 }
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269 else if (MARKERP (readcharfun))
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270 {
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867
|
271 Ichar c;
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|
665
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272 Charbpos mpos = marker_position (readcharfun);
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428
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273 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
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274
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275 if (mpos >= BUF_ZV (inbuffer))
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276 return -1;
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277 c = BUF_FETCH_CHAR (inbuffer, mpos);
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278 set_marker_position (readcharfun, mpos + 1);
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279 return c;
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280 }
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281 else
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282 {
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283 Lisp_Object tem = call0 (readcharfun);
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284
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285 if (!CHAR_OR_CHAR_INTP (tem))
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286 return -1;
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287 return XCHAR_OR_CHAR_INT (tem);
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|
288 }
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|
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289 }
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290
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291 /* Unread the character C in the way appropriate for the stream READCHARFUN.
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292 If the stream is a user function, call it with the char as argument. */
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293
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294 static void
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867
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295 unreadchar (Lisp_Object readcharfun, Ichar c)
|
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428
|
296 {
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|
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297 if (c == -1)
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298 /* Don't back up the pointer if we're unreading the end-of-input mark,
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299 since readchar didn't advance it when we read it. */
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300 ;
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301 else if (BUFFERP (readcharfun))
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302 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
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303 else if (LSTREAMP (readcharfun))
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304 {
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|
867
|
305 Lstream_unget_ichar (XLSTREAM (readcharfun), c);
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428
|
306 #ifdef DEBUG_XEMACS /* testing Mule */
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|
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307 {
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|
|
308 static int testing_mule = 0; /* Set this using debugger */
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|
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309 if (testing_mule)
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|
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310 fprintf (stderr,
|
|
|
311 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
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|
312 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
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|
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313 }
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|
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314 #endif
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315 }
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316 else if (MARKERP (readcharfun))
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317 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
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318 else
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|
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319 call1 (readcharfun, make_char (c));
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|
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320 }
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|
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321
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|
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322 static Lisp_Object read0 (Lisp_Object readcharfun);
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|
323 static Lisp_Object read1 (Lisp_Object readcharfun);
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|
|
324 static Lisp_Object read_list (Lisp_Object readcharfun,
|
|
867
|
325 Ichar terminator,
|
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428
|
326 int allow_dotted_lists,
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|
327 int check_for_doc_references);
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|
328
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|
|
329 static void readevalloop (Lisp_Object readcharfun,
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330 Lisp_Object sourcefile,
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|
331 Lisp_Object (*evalfun) (Lisp_Object),
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332 int printflag);
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333
|
|
|
334 static Lisp_Object
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|
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335 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
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|
|
336 {
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|
|
337 Lstream_close (XLSTREAM (stream));
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|
|
338 return Qnil;
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|
|
339 }
|
|
|
340
|
|
|
341 /* The plague is coming.
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|
|
342
|
|
|
343 Ring around the rosy, pocket full of posy,
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|
|
344 Ashes ashes, they all fall down.
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|
|
345 */
|
|
|
346 void
|
|
|
347 ebolify_bytecode_constants (Lisp_Object vector)
|
|
|
348 {
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|
|
349 int len = XVECTOR_LENGTH (vector);
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|
|
350 int i;
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|
|
351
|
|
|
352 for (i = 0; i < len; i++)
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|
|
353 {
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|
|
354 Lisp_Object el = XVECTOR_DATA (vector)[i];
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|
|
355
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|
|
356 /* We don't check for `eq', `equal', and the others that have
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|
|
357 bytecode opcodes. This might lose if someone passes #'eq or
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|
|
358 something to `funcall', but who would really do that? As
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|
|
359 they say in law, we've made a "good-faith effort" to
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|
|
360 unfuckify ourselves. And doing it this way avoids screwing
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|
|
361 up args to `make-hash-table' and such. As it is, we have to
|
|
|
362 add an extra Ebola check in decode_weak_list_type(). --ben */
|
|
|
363 if (EQ (el, Qassoc)) el = Qold_assoc;
|
|
|
364 else if (EQ (el, Qdelq)) el = Qold_delq;
|
|
|
365 #if 0
|
|
|
366 /* I think this is a bad idea because it will probably mess
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|
|
367 with keymap code. */
|
|
|
368 else if (EQ (el, Qdelete)) el = Qold_delete;
|
|
|
369 #endif
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|
|
370 else if (EQ (el, Qrassq)) el = Qold_rassq;
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|
|
371 else if (EQ (el, Qrassoc)) el = Qold_rassoc;
|
|
|
372
|
|
|
373 XVECTOR_DATA (vector)[i] = el;
|
|
|
374 }
|
|
|
375 }
|
|
|
376
|
|
|
377 static Lisp_Object
|
|
558
|
378 pas_de_holgazan_ici (int fd, Lisp_Object victim)
|
|
428
|
379 {
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|
|
380 Lisp_Object tem;
|
|
|
381 EMACS_INT pos;
|
|
|
382
|
|
|
383 if (!INTP (XCDR (victim)))
|
|
563
|
384 invalid_byte_code ("Bogus doc string reference", victim);
|
|
428
|
385 pos = XINT (XCDR (victim));
|
|
|
386 if (pos < 0)
|
|
|
387 pos = -pos; /* kludge to mark a user variable */
|
|
814
|
388 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal, 0);
|
|
428
|
389 if (!STRINGP (tem))
|
|
563
|
390 signal_error_1 (Qinvalid_byte_code, tem);
|
|
428
|
391 return tem;
|
|
|
392 }
|
|
|
393
|
|
|
394 static Lisp_Object
|
|
|
395 load_force_doc_string_unwind (Lisp_Object oldlist)
|
|
|
396 {
|
|
|
397 struct gcpro gcpro1;
|
|
|
398 Lisp_Object list = Vload_force_doc_string_list;
|
|
|
399 Lisp_Object tail;
|
|
|
400 int fd = XINT (XCAR (Vload_descriptor_list));
|
|
|
401
|
|
|
402 GCPRO1 (list);
|
|
|
403 /* restore the old value first just in case an error occurs. */
|
|
|
404 Vload_force_doc_string_list = oldlist;
|
|
|
405
|
|
|
406 LIST_LOOP (tail, list)
|
|
|
407 {
|
|
|
408 Lisp_Object john = Fcar (tail);
|
|
|
409 if (CONSP (john))
|
|
|
410 {
|
|
|
411 assert (CONSP (XCAR (john)));
|
|
|
412 assert (!purify_flag); /* should have been handled in read_list() */
|
|
558
|
413 XCAR (john) = pas_de_holgazan_ici (fd, XCAR (john));
|
|
428
|
414 }
|
|
|
415 else
|
|
|
416 {
|
|
|
417 Lisp_Object doc;
|
|
|
418
|
|
|
419 assert (COMPILED_FUNCTIONP (john));
|
|
|
420 if (CONSP (XCOMPILED_FUNCTION (john)->instructions))
|
|
|
421 {
|
|
|
422 struct gcpro ngcpro1;
|
|
558
|
423 Lisp_Object juan = (pas_de_holgazan_ici
|
|
814
|
424 (fd,
|
|
|
425 XCOMPILED_FUNCTION (john)->instructions));
|
|
428
|
426 Lisp_Object ivan;
|
|
|
427
|
|
|
428 NGCPRO1 (juan);
|
|
|
429 ivan = Fread (juan);
|
|
|
430 if (!CONSP (ivan))
|
|
563
|
431 invalid_byte_code ("invalid lazy-loaded byte code", ivan);
|
|
428
|
432 XCOMPILED_FUNCTION (john)->instructions = XCAR (ivan);
|
|
|
433 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
434 if (XCOMPILED_FUNCTION (john)->flags.ebolified
|
|
|
435 && VECTORP (XCDR (ivan)))
|
|
|
436 ebolify_bytecode_constants (XCDR (ivan));
|
|
|
437 XCOMPILED_FUNCTION (john)->constants = XCDR (ivan);
|
|
|
438 NUNGCPRO;
|
|
|
439 }
|
|
|
440 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
441 if (CONSP (doc))
|
|
|
442 {
|
|
|
443 assert (!purify_flag); /* should have been handled in
|
|
|
444 read_compiled_function() */
|
|
558
|
445 doc = pas_de_holgazan_ici (fd, doc);
|
|
428
|
446 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
447 doc);
|
|
|
448 }
|
|
|
449 }
|
|
|
450 }
|
|
|
451
|
|
|
452 if (!NILP (list))
|
|
|
453 free_list (list);
|
|
|
454
|
|
|
455 UNGCPRO;
|
|
|
456 return Qnil;
|
|
|
457 }
|
|
|
458
|
|
|
459 /* Close all descriptors in use for Fload_internal.
|
|
|
460 This is used when starting a subprocess. */
|
|
|
461
|
|
|
462 void
|
|
|
463 close_load_descs (void)
|
|
|
464 {
|
|
|
465 Lisp_Object tail;
|
|
|
466 LIST_LOOP (tail, Vload_descriptor_list)
|
|
771
|
467 retry_close (XINT (XCAR (tail)));
|
|
428
|
468 }
|
|
|
469
|
|
|
470 #ifdef I18N3
|
|
|
471 Lisp_Object Vfile_domain;
|
|
|
472 #endif /* I18N3 */
|
|
|
473
|
|
|
474 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /*
|
|
|
475 Execute a file of Lisp code named FILE; no coding-system frobbing.
|
|
|
476 This function is identical to `load' except for the handling of the
|
|
|
477 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule
|
|
|
478 support is not present, both functions are identical and ignore the
|
|
|
479 CODESYS and USED-CODESYS arguments.)
|
|
|
480
|
|
|
481 If support for Mule exists in this Emacs, the file is decoded
|
|
|
482 according to CODESYS; if omitted, no conversion happens. If
|
|
|
483 USED-CODESYS is non-nil, it should be a symbol, and the actual coding
|
|
|
484 system that was used for the decoding is stored into it. It will in
|
|
|
485 general be different from CODESYS if CODESYS specifies automatic
|
|
|
486 encoding detection or end-of-line detection.
|
|
|
487 */
|
|
444
|
488 (file, noerror, nomessage, nosuffix, codesys, used_codesys))
|
|
428
|
489 {
|
|
|
490 /* This function can GC */
|
|
|
491 int fd = -1;
|
|
|
492 int speccount = specpdl_depth ();
|
|
|
493 int source_only = 0;
|
|
1123
|
494 /* NEWER and OLDER are filenames w/o directory, used in loading messages
|
|
|
495 to e.g. warn of newer .el files when the .elc is being loaded. */
|
|
428
|
496 Lisp_Object newer = Qnil;
|
|
1123
|
497 Lisp_Object older = Qnil;
|
|
428
|
498 Lisp_Object handler = Qnil;
|
|
|
499 Lisp_Object found = Qnil;
|
|
1123
|
500 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
428
|
501 int reading_elc = 0;
|
|
780
|
502 int from_require = EQ (nomessage, Qrequire);
|
|
1123
|
503 int message_p =
|
|
|
504 NILP (nomessage) || from_require || load_always_display_messages;
|
|
428
|
505 /*#ifdef DEBUG_XEMACS*/
|
|
|
506 static Lisp_Object last_file_loaded;
|
|
|
507 /*#endif*/
|
|
|
508 struct stat s1, s2;
|
|
1123
|
509 GCPRO4 (file, newer, older, found);
|
|
428
|
510
|
|
|
511 CHECK_STRING (file);
|
|
|
512
|
|
|
513 /*#ifdef DEBUG_XEMACS*/
|
|
|
514 if (purify_flag && noninteractive)
|
|
|
515 {
|
|
|
516 message_p = 1;
|
|
|
517 last_file_loaded = file;
|
|
|
518 }
|
|
|
519 /*#endif / * DEBUG_XEMACS */
|
|
|
520
|
|
|
521 /* If file name is magic, call the handler. */
|
|
|
522 handler = Ffind_file_name_handler (file, Qload);
|
|
|
523 if (!NILP (handler))
|
|
444
|
524 RETURN_UNGCPRO (call5 (handler, Qload, file, noerror,
|
|
428
|
525 nomessage, nosuffix));
|
|
|
526
|
|
|
527 /* Do this after the handler to avoid
|
|
|
528 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
529 (Below here, we care only whether they are nil or not.) */
|
|
|
530 file = Fsubstitute_in_file_name (file);
|
|
|
531 if (!NILP (used_codesys))
|
|
|
532 CHECK_SYMBOL (used_codesys);
|
|
|
533
|
|
|
534 /* Avoid weird lossage with null string as arg,
|
|
|
535 since it would try to load a directory as a Lisp file.
|
|
|
536 Unix truly sucks. */
|
|
|
537 if (XSTRING_LENGTH (file) > 0)
|
|
|
538 {
|
|
867
|
539 Ibyte *foundstr;
|
|
428
|
540 int foundlen;
|
|
|
541
|
|
|
542 fd = locate_file (Vload_path, file,
|
|
|
543 ((!NILP (nosuffix)) ? Qnil :
|
|
|
544 build_string (load_ignore_elc_files ? ".el:" :
|
|
|
545 ".elc:.el:")),
|
|
|
546 &found,
|
|
|
547 -1);
|
|
|
548
|
|
|
549 if (fd < 0)
|
|
|
550 {
|
|
444
|
551 if (NILP (noerror))
|
|
563
|
552 signal_error (Qfile_error, "Cannot open load file", file);
|
|
428
|
553 else
|
|
|
554 {
|
|
|
555 UNGCPRO;
|
|
|
556 return Qnil;
|
|
|
557 }
|
|
|
558 }
|
|
|
559
|
|
867
|
560 foundstr = (Ibyte *) ALLOCA (XSTRING_LENGTH (found) + 1);
|
|
771
|
561 qxestrcpy (foundstr, XSTRING_DATA (found));
|
|
|
562 foundlen = qxestrlen (foundstr);
|
|
428
|
563
|
|
|
564 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
565 differ. --ben */
|
|
|
566 if (load_ignore_elc_files)
|
|
1123
|
567 newer = Ffile_name_nondirectory (found);
|
|
|
568 else if ((load_warn_when_source_newer ||
|
|
|
569 load_ignore_out_of_date_elc_files) &&
|
|
428
|
570 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
571 {
|
|
771
|
572 if (! qxe_fstat (fd, &s1)) /* can't fail, right? */
|
|
428
|
573 {
|
|
|
574 int result;
|
|
|
575 /* temporarily hack the 'c' off the end of the filename */
|
|
|
576 foundstr[foundlen - 1] = '\0';
|
|
771
|
577 result = qxe_stat (foundstr, &s2);
|
|
428
|
578 if (result >= 0 &&
|
|
|
579 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
1123
|
580 {
|
|
|
581 /* .elc exists and is out-of-date wrt .el */
|
|
|
582 Lisp_Object el_name = make_string (foundstr, foundlen - 1);
|
|
|
583 struct gcpro nngcpro1;
|
|
|
584 NNGCPRO1 (el_name);
|
|
|
585 newer = Ffile_name_nondirectory (el_name);
|
|
|
586 if (load_ignore_out_of_date_elc_files)
|
|
|
587 {
|
|
|
588 int newfd =
|
|
|
589 locate_file_open_or_access_file
|
|
|
590 (XSTRING_DATA (el_name), -1);
|
|
|
591
|
|
|
592 if (newfd >= 0)
|
|
|
593 {
|
|
|
594 older = Ffile_name_nondirectory (found);
|
|
|
595 found = el_name;
|
|
|
596 retry_close (fd);
|
|
|
597 fd = newfd;
|
|
|
598 }
|
|
|
599 }
|
|
|
600 NNUNGCPRO;
|
|
|
601 }
|
|
428
|
602 /* put the 'c' back on (kludge-o-rama) */
|
|
|
603 foundstr[foundlen - 1] = 'c';
|
|
|
604 }
|
|
|
605 }
|
|
|
606 else if (load_warn_when_source_only &&
|
|
|
607 /* `found' ends in ".el" */
|
|
|
608 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
609 /* `file' does not end in ".el" */
|
|
|
610 memcmp (".el",
|
|
|
611 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
|
612 3))
|
|
1123
|
613 source_only = 1;
|
|
428
|
614
|
|
|
615 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
616 reading_elc = 1;
|
|
|
617 }
|
|
|
618
|
|
1123
|
619 #define PRINT_LOADING_MESSAGE_1(loading, done) \
|
|
|
620 do { \
|
|
|
621 if (load_ignore_elc_files) \
|
|
|
622 { \
|
|
|
623 if (message_p) \
|
|
|
624 message (loading done, \
|
|
|
625 XSTRING_DATA (load_show_full_path_in_messages ? \
|
|
|
626 found : newer)); \
|
|
|
627 } \
|
|
|
628 else if (!NILP (older)) \
|
|
|
629 { \
|
|
|
630 assert (load_ignore_out_of_date_elc_files); \
|
|
|
631 message (loading done " (file %s is out-of-date)", \
|
|
|
632 XSTRING_DATA (load_show_full_path_in_messages ? \
|
|
|
633 found : newer), \
|
|
|
634 XSTRING_DATA (older)); \
|
|
|
635 } \
|
|
|
636 else if (!NILP (newer)) \
|
|
|
637 message (loading done " (file %s is newer)", \
|
|
|
638 XSTRING_DATA (load_show_full_path_in_messages ? \
|
|
|
639 found : file), \
|
|
|
640 XSTRING_DATA (newer)); \
|
|
|
641 else if (source_only) \
|
|
|
642 message (loading done " (file %s.elc does not exist)", \
|
|
|
643 XSTRING_DATA (load_show_full_path_in_messages ? \
|
|
|
644 found : file), \
|
|
|
645 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
646 else if (message_p) \
|
|
|
647 message (loading done, \
|
|
|
648 XSTRING_DATA (load_show_full_path_in_messages ? \
|
|
|
649 found : file)); \
|
|
428
|
650 } while (0)
|
|
|
651
|
|
780
|
652 #define PRINT_LOADING_MESSAGE(done) \
|
|
|
653 do { \
|
|
|
654 if (from_require) \
|
|
|
655 PRINT_LOADING_MESSAGE_1 ("Requiring %s...", done); \
|
|
|
656 else \
|
|
|
657 PRINT_LOADING_MESSAGE_1 ("Loading %s...", done); \
|
|
|
658 } while (0)
|
|
|
659
|
|
428
|
660 PRINT_LOADING_MESSAGE ("");
|
|
|
661
|
|
|
662 {
|
|
|
663 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
664 Lisp_Object lispstream = Qnil;
|
|
442
|
665 const int block_size = 8192;
|
|
428
|
666 struct gcpro ngcpro1;
|
|
|
667
|
|
|
668 NGCPRO1 (lispstream);
|
|
|
669 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
670 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
671 files aren't really all that big. */
|
|
|
672 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
673 block_size);
|
|
771
|
674 lispstream = make_coding_input_stream
|
|
|
675 (XLSTREAM (lispstream), get_coding_system_for_text_file (codesys, 1),
|
|
800
|
676 CODING_DECODE, 0);
|
|
428
|
677 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
678 block_size);
|
|
|
679 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
853
|
680 internal_bind_int (&load_in_progress, 1 + load_in_progress);
|
|
428
|
681 record_unwind_protect (load_unwind, lispstream);
|
|
853
|
682 internal_bind_lisp_object (&Vload_descriptor_list,
|
|
|
683 Fcons (make_int (fd), Vload_descriptor_list));
|
|
|
684 internal_bind_lisp_object (&Vload_file_name_internal, found);
|
|
|
685 internal_bind_lisp_object (&Vload_file_name_internal_the_purecopy, Qnil);
|
|
|
686 /* this is not a simple internal_bind. */
|
|
428
|
687 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
688 Vload_force_doc_string_list);
|
|
853
|
689 Vload_force_doc_string_list = Qnil;
|
|
428
|
690 specbind (Qload_file_name, found);
|
|
|
691 #ifdef I18N3
|
|
853
|
692 /* set it to nil; a call to #'domain will set it. */
|
|
|
693 internal_bind_lisp_object (&Vfile_domain, Qnil);
|
|
428
|
694 #endif
|
|
|
695
|
|
|
696 /* Now determine what sort of ELC file we're reading in. */
|
|
853
|
697 internal_bind_int (&load_byte_code_version, load_byte_code_version);
|
|
428
|
698 if (reading_elc)
|
|
|
699 {
|
|
|
700 char elc_header[8];
|
|
|
701 int num_read;
|
|
|
702
|
|
|
703 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8);
|
|
|
704 if (num_read < 8
|
|
|
705 || strncmp (elc_header, ";ELC", 4))
|
|
|
706 {
|
|
|
707 /* Huh? Probably not a valid ELC file. */
|
|
|
708 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
709 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read);
|
|
|
710 }
|
|
|
711 else
|
|
|
712 load_byte_code_version = elc_header[4];
|
|
|
713 }
|
|
|
714 else
|
|
|
715 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
716
|
|
|
717 readevalloop (lispstream, file, Feval, 0);
|
|
|
718 if (!NILP (used_codesys))
|
|
|
719 Fset (used_codesys,
|
|
|
720 XCODING_SYSTEM_NAME
|
|
771
|
721 (coding_stream_detected_coding_system (XLSTREAM (lispstream))));
|
|
|
722 unbind_to (speccount);
|
|
428
|
723
|
|
|
724 NUNGCPRO;
|
|
|
725 }
|
|
|
726
|
|
|
727 {
|
|
|
728 Lisp_Object tem;
|
|
|
729 /* #### Disgusting kludge */
|
|
|
730 /* Run any load-hooks for this file. */
|
|
|
731 /* #### An even more disgusting kludge. There is horrible code */
|
|
|
732 /* that is relying on the fact that dumped lisp files are found */
|
|
|
733 /* via `load-path' search. */
|
|
|
734 Lisp_Object name = file;
|
|
|
735
|
|
1123
|
736 if (!NILP (Ffile_name_absolute_p (file)))
|
|
|
737 name = Ffile_name_nondirectory (file);
|
|
428
|
738
|
|
|
739 {
|
|
|
740 struct gcpro ngcpro1;
|
|
|
741
|
|
|
742 NGCPRO1 (name);
|
|
|
743 tem = Fassoc (name, Vafter_load_alist);
|
|
|
744 NUNGCPRO;
|
|
|
745 }
|
|
|
746 if (!NILP (tem))
|
|
|
747 {
|
|
|
748 struct gcpro ngcpro1;
|
|
|
749
|
|
|
750 NGCPRO1 (tem);
|
|
|
751 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
752 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
753 Feval (tem);
|
|
|
754 NUNGCPRO;
|
|
|
755 }
|
|
|
756 }
|
|
|
757
|
|
1123
|
758 /* #ifdef DEBUG_XEMACS */
|
|
428
|
759 if (purify_flag && noninteractive)
|
|
|
760 {
|
|
|
761 if (!EQ (last_file_loaded, file))
|
|
|
762 message ("Loading %s ...done", XSTRING_DATA (file));
|
|
|
763 }
|
|
1123
|
764 /* #endif / * DEBUG_XEMACS */
|
|
428
|
765
|
|
|
766 if (!noninteractive)
|
|
|
767 PRINT_LOADING_MESSAGE ("done");
|
|
|
768
|
|
|
769 UNGCPRO;
|
|
|
770 return Qt;
|
|
|
771 }
|
|
|
772
|
|
|
773
|
|
|
774 /* ------------------------------- */
|
|
|
775 /* locate_file */
|
|
|
776 /* ------------------------------- */
|
|
|
777
|
|
|
778 static int
|
|
|
779 decode_mode_1 (Lisp_Object mode)
|
|
|
780 {
|
|
|
781 if (EQ (mode, Qexists))
|
|
|
782 return F_OK;
|
|
|
783 else if (EQ (mode, Qexecutable))
|
|
|
784 return X_OK;
|
|
|
785 else if (EQ (mode, Qwritable))
|
|
|
786 return W_OK;
|
|
|
787 else if (EQ (mode, Qreadable))
|
|
|
788 return R_OK;
|
|
|
789 else if (INTP (mode))
|
|
|
790 {
|
|
|
791 check_int_range (XINT (mode), 0, 7);
|
|
|
792 return XINT (mode);
|
|
|
793 }
|
|
|
794 else
|
|
563
|
795 invalid_argument ("Invalid value", mode);
|
|
428
|
796 return 0; /* unreached */
|
|
|
797 }
|
|
|
798
|
|
|
799 static int
|
|
|
800 decode_mode (Lisp_Object mode)
|
|
|
801 {
|
|
|
802 if (NILP (mode))
|
|
|
803 return R_OK;
|
|
|
804 else if (CONSP (mode))
|
|
|
805 {
|
|
|
806 Lisp_Object tail;
|
|
|
807 int mask = 0;
|
|
|
808 EXTERNAL_LIST_LOOP (tail, mode)
|
|
|
809 mask |= decode_mode_1 (XCAR (tail));
|
|
|
810 return mask;
|
|
|
811 }
|
|
|
812 else
|
|
|
813 return decode_mode_1 (mode);
|
|
|
814 }
|
|
|
815
|
|
|
816 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /*
|
|
|
817 Search for FILENAME through PATH-LIST.
|
|
|
818
|
|
|
819 If SUFFIXES is non-nil, it should be a list of suffixes to append to
|
|
|
820 file name when searching.
|
|
|
821
|
|
|
822 If MODE is non-nil, it should be a symbol or a list of symbol representing
|
|
|
823 requirements. Allowed symbols are `exists', `executable', `writable', and
|
|
|
824 `readable'. If MODE is nil, it defaults to `readable'.
|
|
|
825
|
|
|
826 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
827 in order to speed things up. It tries valiantly to not get confused in
|
|
|
828 the face of a changing and unpredictable environment, but can occasionally
|
|
|
829 get tripped up. In this case, you will have to call
|
|
|
830 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
831 for details.
|
|
|
832 */
|
|
|
833 (filename, path_list, suffixes, mode))
|
|
|
834 {
|
|
|
835 /* This function can GC */
|
|
|
836 Lisp_Object tp;
|
|
|
837
|
|
|
838 CHECK_STRING (filename);
|
|
|
839
|
|
|
840 if (LISTP (suffixes))
|
|
|
841 {
|
|
|
842 Lisp_Object tail;
|
|
|
843 EXTERNAL_LIST_LOOP (tail, suffixes)
|
|
|
844 CHECK_STRING (XCAR (tail));
|
|
|
845 }
|
|
|
846 else
|
|
|
847 CHECK_STRING (suffixes);
|
|
|
848
|
|
|
849 locate_file (path_list, filename, suffixes, &tp, decode_mode (mode));
|
|
|
850 return tp;
|
|
|
851 }
|
|
|
852
|
|
|
853 /* Recalculate the hash table for the given string. DIRECTORY should
|
|
|
854 better have been through Fexpand_file_name() by now. */
|
|
|
855
|
|
|
856 static Lisp_Object
|
|
|
857 locate_file_refresh_hashing (Lisp_Object directory)
|
|
|
858 {
|
|
|
859 Lisp_Object hash =
|
|
771
|
860 make_directory_hash_table (XSTRING_DATA (directory));
|
|
428
|
861
|
|
|
862 if (!NILP (hash))
|
|
|
863 Fputhash (directory, hash, Vlocate_file_hash_table);
|
|
|
864 return hash;
|
|
|
865 }
|
|
|
866
|
|
|
867 /* find the hash table for the given directory, recalculating if necessary */
|
|
|
868
|
|
|
869 static Lisp_Object
|
|
|
870 locate_file_find_directory_hash_table (Lisp_Object directory)
|
|
|
871 {
|
|
|
872 Lisp_Object hash = Fgethash (directory, Vlocate_file_hash_table, Qnil);
|
|
|
873 if (NILP (hash))
|
|
|
874 return locate_file_refresh_hashing (directory);
|
|
|
875 else
|
|
|
876 return hash;
|
|
|
877 }
|
|
|
878
|
|
|
879 /* The SUFFIXES argument in any of the locate_file* functions can be
|
|
|
880 nil, a list, or a string (for backward compatibility), with the
|
|
|
881 following semantics:
|
|
|
882
|
|
|
883 a) nil - no suffix, just search for file name intact
|
|
|
884 (semantically different from "empty suffix list", which
|
|
|
885 would be meaningless.)
|
|
|
886 b) list - list of suffixes to append to file name. Each of these
|
|
|
887 must be a string.
|
|
|
888 c) string - colon-separated suffixes to append to file name (backward
|
|
|
889 compatibility).
|
|
|
890
|
|
|
891 All of this got hairy, so I decided to use a mapper. Calling a
|
|
|
892 function for each suffix shouldn't slow things down, since
|
|
|
893 locate_file is rarely called with enough suffixes for funcalls to
|
|
|
894 make any difference. */
|
|
|
895
|
|
|
896 /* Map FUN over SUFFIXES, as described above. FUN will be called with a
|
|
|
897 char * containing the current file name, and ARG. Mapping stops when
|
|
|
898 FUN returns non-zero. */
|
|
|
899 static void
|
|
|
900 locate_file_map_suffixes (Lisp_Object filename, Lisp_Object suffixes,
|
|
867
|
901 int (*fun) (Ibyte *, void *),
|
|
428
|
902 void *arg)
|
|
|
903 {
|
|
|
904 /* This function can GC */
|
|
867
|
905 Ibyte *fn;
|
|
428
|
906 int fn_len, max;
|
|
|
907
|
|
|
908 /* Calculate maximum size of any filename made from
|
|
|
909 this path element/specified file name and any possible suffix. */
|
|
|
910 if (CONSP (suffixes))
|
|
|
911 {
|
|
|
912 /* We must traverse the list, so why not do it right. */
|
|
|
913 Lisp_Object tail;
|
|
|
914 max = 0;
|
|
|
915 LIST_LOOP (tail, suffixes)
|
|
|
916 {
|
|
|
917 if (XSTRING_LENGTH (XCAR (tail)) > max)
|
|
|
918 max = XSTRING_LENGTH (XCAR (tail));
|
|
|
919 }
|
|
|
920 }
|
|
|
921 else if (NILP (suffixes))
|
|
|
922 max = 0;
|
|
|
923 else
|
|
|
924 /* Just take the easy way out */
|
|
|
925 max = XSTRING_LENGTH (suffixes);
|
|
|
926
|
|
|
927 fn_len = XSTRING_LENGTH (filename);
|
|
867
|
928 fn = (Ibyte *) ALLOCA (max + fn_len + 1);
|
|
771
|
929 memcpy (fn, XSTRING_DATA (filename), fn_len);
|
|
428
|
930
|
|
|
931 /* Loop over suffixes. */
|
|
|
932 if (!STRINGP (suffixes))
|
|
|
933 {
|
|
|
934 if (NILP (suffixes))
|
|
|
935 {
|
|
|
936 /* Case a) discussed in the comment above. */
|
|
|
937 fn[fn_len] = 0;
|
|
|
938 if ((*fun) (fn, arg))
|
|
|
939 return;
|
|
|
940 }
|
|
|
941 else
|
|
|
942 {
|
|
|
943 /* Case b) */
|
|
|
944 Lisp_Object tail;
|
|
|
945 LIST_LOOP (tail, suffixes)
|
|
|
946 {
|
|
|
947 memcpy (fn + fn_len, XSTRING_DATA (XCAR (tail)),
|
|
|
948 XSTRING_LENGTH (XCAR (tail)));
|
|
|
949 fn[fn_len + XSTRING_LENGTH (XCAR (tail))] = 0;
|
|
|
950 if ((*fun) (fn, arg))
|
|
|
951 return;
|
|
|
952 }
|
|
|
953 }
|
|
|
954 }
|
|
|
955 else
|
|
|
956 {
|
|
|
957 /* Case c) */
|
|
867
|
958 const Ibyte *nsuffix = XSTRING_DATA (suffixes);
|
|
428
|
959
|
|
|
960 while (1)
|
|
|
961 {
|
|
867
|
962 Ibyte *esuffix = qxestrchr (nsuffix, ':');
|
|
771
|
963 Bytecount lsuffix = esuffix ? esuffix - nsuffix :
|
|
|
964 qxestrlen (nsuffix);
|
|
428
|
965
|
|
|
966 /* Concatenate path element/specified name with the suffix. */
|
|
771
|
967 qxestrncpy (fn + fn_len, nsuffix, lsuffix);
|
|
428
|
968 fn[fn_len + lsuffix] = 0;
|
|
|
969
|
|
|
970 if ((*fun) (fn, arg))
|
|
|
971 return;
|
|
|
972
|
|
|
973 /* Advance to next suffix. */
|
|
|
974 if (esuffix == 0)
|
|
|
975 break;
|
|
|
976 nsuffix += lsuffix + 1;
|
|
|
977 }
|
|
|
978 }
|
|
|
979 }
|
|
|
980
|
|
771
|
981 struct locate_file_in_directory_mapper_closure
|
|
|
982 {
|
|
428
|
983 int fd;
|
|
|
984 Lisp_Object *storeptr;
|
|
|
985 int mode;
|
|
|
986 };
|
|
|
987
|
|
1123
|
988 /* open() or access() a file to be returned by locate_file(). if
|
|
|
989 ACCESS_MODE >= 0, do an access() with that mode, else open(). Does
|
|
|
990 various magic, e.g. opening the file read-only and binary and setting
|
|
|
991 the close-on-exec flag on the file. */
|
|
|
992
|
|
|
993 static int
|
|
|
994 locate_file_open_or_access_file (Ibyte *fn, int access_mode)
|
|
|
995 {
|
|
|
996 int val;
|
|
|
997
|
|
|
998 /* Check that we can access or open it. */
|
|
|
999 if (access_mode >= 0)
|
|
|
1000 val = qxe_access (fn, access_mode);
|
|
|
1001 else
|
|
|
1002 {
|
|
|
1003 val = qxe_open (fn, O_RDONLY | OPEN_BINARY, 0);
|
|
|
1004
|
|
|
1005 #ifndef WIN32_NATIVE
|
|
|
1006 if (val >= 0)
|
|
|
1007 /* If we actually opened the file, set close-on-exec flag
|
|
|
1008 on the new descriptor so that subprocesses can't whack
|
|
|
1009 at it. */
|
|
|
1010 (void) fcntl (val, F_SETFD, FD_CLOEXEC);
|
|
|
1011 #endif
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 return val;
|
|
|
1015 }
|
|
|
1016
|
|
428
|
1017 static int
|
|
867
|
1018 locate_file_in_directory_mapper (Ibyte *fn, void *arg)
|
|
428
|
1019 {
|
|
|
1020 struct locate_file_in_directory_mapper_closure *closure =
|
|
771
|
1021 (struct locate_file_in_directory_mapper_closure *) arg;
|
|
428
|
1022 struct stat st;
|
|
|
1023
|
|
|
1024 /* Ignore file if it's a directory. */
|
|
771
|
1025 if (qxe_stat (fn, &st) >= 0
|
|
428
|
1026 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
1027 {
|
|
|
1028 /* Check that we can access or open it. */
|
|
1123
|
1029 closure->fd = locate_file_open_or_access_file (fn, closure->mode);
|
|
428
|
1030
|
|
|
1031 if (closure->fd >= 0)
|
|
|
1032 {
|
|
|
1033 /* We succeeded; return this descriptor and filename. */
|
|
|
1034 if (closure->storeptr)
|
|
771
|
1035 *closure->storeptr = build_intstring (fn);
|
|
428
|
1036
|
|
|
1037 return 1;
|
|
|
1038 }
|
|
|
1039 }
|
|
|
1040 /* Keep mapping. */
|
|
|
1041 return 0;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044
|
|
|
1045 /* look for STR in PATH, optionally adding SUFFIXES. DIRECTORY need
|
|
|
1046 not have been expanded. */
|
|
|
1047
|
|
|
1048 static int
|
|
|
1049 locate_file_in_directory (Lisp_Object directory, Lisp_Object str,
|
|
|
1050 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1051 int mode)
|
|
|
1052 {
|
|
|
1053 /* This function can GC */
|
|
|
1054 struct locate_file_in_directory_mapper_closure closure;
|
|
|
1055 Lisp_Object filename = Qnil;
|
|
|
1056 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1057
|
|
|
1058 GCPRO3 (directory, str, filename);
|
|
|
1059
|
|
|
1060 filename = Fexpand_file_name (str, directory);
|
|
|
1061 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
1062 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
1063 /* Of course, this could conceivably lose if luser sets
|
|
|
1064 default-directory to be something non-absolute ... */
|
|
|
1065 {
|
|
|
1066 if (NILP (filename))
|
|
|
1067 /* NIL means current directory */
|
|
|
1068 filename = current_buffer->directory;
|
|
|
1069 else
|
|
|
1070 filename = Fexpand_file_name (filename,
|
|
|
1071 current_buffer->directory);
|
|
|
1072 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
1073 {
|
|
|
1074 /* Give up on this directory! */
|
|
|
1075 UNGCPRO;
|
|
|
1076 return -1;
|
|
|
1077 }
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 closure.fd = -1;
|
|
|
1081 closure.storeptr = storeptr;
|
|
|
1082 closure.mode = mode;
|
|
|
1083
|
|
771
|
1084 locate_file_map_suffixes (filename, suffixes,
|
|
|
1085 locate_file_in_directory_mapper,
|
|
428
|
1086 &closure);
|
|
|
1087
|
|
|
1088 UNGCPRO;
|
|
|
1089 return closure.fd;
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
1093
|
|
|
1094 static int
|
|
|
1095 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
1096 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1097 int mode)
|
|
|
1098 {
|
|
|
1099 /* This function can GC */
|
|
|
1100 int absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
1101
|
|
|
1102 EXTERNAL_LIST_LOOP (path, path)
|
|
|
1103 {
|
|
|
1104 int val = locate_file_in_directory (XCAR (path), str, suffixes, storeptr,
|
|
|
1105 mode);
|
|
|
1106 if (val >= 0)
|
|
|
1107 return val;
|
|
|
1108 if (absolute)
|
|
|
1109 break;
|
|
|
1110 }
|
|
|
1111 return -1;
|
|
|
1112 }
|
|
|
1113
|
|
|
1114 static int
|
|
867
|
1115 locate_file_construct_suffixed_files_mapper (Ibyte *fn, void *arg)
|
|
428
|
1116 {
|
|
771
|
1117 Lisp_Object *tail = (Lisp_Object *) arg;
|
|
|
1118 *tail = Fcons (build_intstring (fn), *tail);
|
|
428
|
1119 return 0;
|
|
|
1120 }
|
|
|
1121
|
|
|
1122 /* Construct a list of all files to search for.
|
|
|
1123 It makes sense to have this despite locate_file_map_suffixes()
|
|
|
1124 because we need Lisp strings to access the hash-table, and it would
|
|
|
1125 be inefficient to create them on the fly, again and again for each
|
|
|
1126 path component. See locate_file(). */
|
|
|
1127
|
|
|
1128 static Lisp_Object
|
|
|
1129 locate_file_construct_suffixed_files (Lisp_Object filename,
|
|
|
1130 Lisp_Object suffixes)
|
|
|
1131 {
|
|
|
1132 Lisp_Object tail = Qnil;
|
|
|
1133 struct gcpro gcpro1;
|
|
|
1134 GCPRO1 (tail);
|
|
|
1135
|
|
|
1136 locate_file_map_suffixes (filename, suffixes,
|
|
|
1137 locate_file_construct_suffixed_files_mapper,
|
|
|
1138 &tail);
|
|
|
1139
|
|
|
1140 UNGCPRO;
|
|
|
1141 return Fnreverse (tail);
|
|
|
1142 }
|
|
|
1143
|
|
|
1144 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /*
|
|
|
1145 Clear the hash records for the specified list of directories.
|
|
|
1146 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1147 track the following environmental changes:
|
|
|
1148
|
|
|
1149 -- changes of any sort to the list of directories to be searched.
|
|
|
1150 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1151 directories in the list.
|
|
|
1152 -- byte-compilation of a .el file into a .elc file.
|
|
|
1153
|
|
|
1154 `locate-file' will primarily get confused if you add a file that shadows
|
|
|
1155 \(i.e. has the same name as) another file further down in the directory list.
|
|
|
1156 In this case, you must call `locate-file-clear-hashing'.
|
|
|
1157
|
|
|
1158 If PATH is t, it means to fully clear all the accumulated hashes. This
|
|
|
1159 can be used if the internal tables grow too large, or when dumping.
|
|
|
1160 */
|
|
|
1161 (path))
|
|
|
1162 {
|
|
|
1163 if (EQ (path, Qt))
|
|
|
1164 Fclrhash (Vlocate_file_hash_table);
|
|
|
1165 else
|
|
|
1166 {
|
|
|
1167 Lisp_Object pathtail;
|
|
|
1168 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1169 {
|
|
|
1170 Lisp_Object pathel = Fexpand_file_name (XCAR (pathtail), Qnil);
|
|
|
1171 Fremhash (pathel, Vlocate_file_hash_table);
|
|
|
1172 }
|
|
|
1173 }
|
|
|
1174 return Qnil;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 /* Search for a file whose name is STR, looking in directories
|
|
|
1178 in the Lisp list PATH, and trying suffixes from SUFFIXES.
|
|
|
1179 SUFFIXES is a list of possible suffixes, or (for backward
|
|
|
1180 compatibility) a string containing possible suffixes separated by
|
|
|
1181 colons.
|
|
|
1182 On success, returns a file descriptor. On failure, returns -1.
|
|
|
1183
|
|
|
1184 MODE nonnegative means don't open the files,
|
|
|
1185 just look for one for which access(file,MODE) succeeds. In this case,
|
|
951
|
1186 returns a nonnegative value on success. On failure, returns -1.
|
|
428
|
1187
|
|
|
1188 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
1189 the file actually found should be stored as a Lisp string.
|
|
|
1190 Nil is stored there on failure.
|
|
|
1191
|
|
|
1192 Called openp() in FSFmacs. */
|
|
|
1193
|
|
|
1194 int
|
|
|
1195 locate_file (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes,
|
|
|
1196 Lisp_Object *storeptr, int mode)
|
|
|
1197 {
|
|
|
1198 /* This function can GC */
|
|
|
1199 Lisp_Object suffixtab = Qnil;
|
|
|
1200 Lisp_Object pathtail, pathel_expanded;
|
|
|
1201 int val;
|
|
|
1202 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
1203
|
|
|
1204 if (storeptr)
|
|
|
1205 *storeptr = Qnil;
|
|
|
1206
|
|
|
1207 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
1208 unless some caller has fucked up. There are known instances that
|
|
|
1209 call us with build_string("foo:bar") as SUFFIXES, though. */
|
|
|
1210 GCPRO4 (path, str, suffixes, suffixtab);
|
|
|
1211
|
|
|
1212 /* if this filename has directory components, it's too complicated
|
|
|
1213 to try and use the hash tables. */
|
|
|
1214 if (!NILP (Ffile_name_directory (str)))
|
|
|
1215 {
|
|
|
1216 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1217 UNGCPRO;
|
|
|
1218 return val;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 suffixtab = locate_file_construct_suffixed_files (str, suffixes);
|
|
|
1222
|
|
|
1223 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1224 {
|
|
|
1225 Lisp_Object pathel = XCAR (pathtail);
|
|
|
1226 Lisp_Object hash_table;
|
|
|
1227 Lisp_Object tail;
|
|
|
1228 int found = 0;
|
|
|
1229
|
|
|
1230 /* If this path element is relative, we have to look by hand. */
|
|
442
|
1231 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel)))
|
|
428
|
1232 {
|
|
|
1233 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1234 mode);
|
|
|
1235 if (val >= 0)
|
|
|
1236 {
|
|
|
1237 UNGCPRO;
|
|
|
1238 return val;
|
|
|
1239 }
|
|
|
1240 continue;
|
|
|
1241 }
|
|
|
1242
|
|
|
1243 pathel_expanded = Fexpand_file_name (pathel, Qnil);
|
|
|
1244 hash_table = locate_file_find_directory_hash_table (pathel_expanded);
|
|
|
1245
|
|
|
1246 if (!NILP (hash_table))
|
|
|
1247 {
|
|
|
1248 /* Loop over suffixes. */
|
|
|
1249 LIST_LOOP (tail, suffixtab)
|
|
|
1250 if (!NILP (Fgethash (XCAR (tail), hash_table, Qnil)))
|
|
|
1251 {
|
|
|
1252 found = 1;
|
|
|
1253 break;
|
|
|
1254 }
|
|
|
1255 }
|
|
|
1256
|
|
|
1257 if (found)
|
|
|
1258 {
|
|
|
1259 /* This is a likely candidate. Look by hand in this directory
|
|
|
1260 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1261 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1262 mode);
|
|
|
1263 if (val >= 0)
|
|
|
1264 {
|
|
|
1265 UNGCPRO;
|
|
|
1266 return val;
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1270 a directory ...) So refresh our hashing. */
|
|
|
1271 locate_file_refresh_hashing (pathel_expanded);
|
|
|
1272 }
|
|
|
1273 }
|
|
|
1274
|
|
|
1275 /* File is probably not there, but check the hard way just in case. */
|
|
|
1276 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1277 if (val >= 0)
|
|
|
1278 {
|
|
|
1279 /* Sneaky user added a file without telling us. */
|
|
|
1280 Flocate_file_clear_hashing (path);
|
|
|
1281 }
|
|
|
1282
|
|
|
1283 UNGCPRO;
|
|
|
1284 return val;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287
|
|
|
1288 #ifdef LOADHIST
|
|
|
1289
|
|
|
1290 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1291 into the load_history variable. The details depend on whether
|
|
|
1292 the source has an associated file name or not. */
|
|
|
1293
|
|
|
1294 static void
|
|
|
1295 build_load_history (int loading, Lisp_Object source)
|
|
|
1296 {
|
|
|
1297 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1298 REGISTER Lisp_Object tem, tem2;
|
|
|
1299 int foundit;
|
|
|
1300
|
|
|
1301 #if !defined(LOADHIST_DUMPED)
|
|
|
1302 /* Don't bother recording anything for preloaded files. */
|
|
|
1303 if (purify_flag)
|
|
|
1304 return;
|
|
|
1305 #endif
|
|
|
1306
|
|
|
1307 tail = Vload_history;
|
|
|
1308 prev = Qnil;
|
|
|
1309 foundit = 0;
|
|
|
1310 while (!NILP (tail))
|
|
|
1311 {
|
|
|
1312 tem = Fcar (tail);
|
|
|
1313
|
|
|
1314 /* Find the feature's previous assoc list... */
|
|
|
1315 if (internal_equal (source, Fcar (tem), 0))
|
|
|
1316 {
|
|
|
1317 foundit = 1;
|
|
|
1318
|
|
|
1319 /* If we're loading, remove it. */
|
|
|
1320 if (loading)
|
|
|
1321 {
|
|
|
1322 if (NILP (prev))
|
|
|
1323 Vload_history = Fcdr (tail);
|
|
|
1324 else
|
|
|
1325 Fsetcdr (prev, Fcdr (tail));
|
|
|
1326 }
|
|
|
1327
|
|
|
1328 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1329 else
|
|
|
1330 {
|
|
|
1331 tem2 = Vcurrent_load_list;
|
|
|
1332
|
|
|
1333 while (CONSP (tem2))
|
|
|
1334 {
|
|
|
1335 newelt = XCAR (tem2);
|
|
|
1336
|
|
|
1337 if (NILP (Fmemq (newelt, tem)))
|
|
|
1338 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1339 Fcons (newelt, Fcdr (tem))));
|
|
|
1340
|
|
|
1341 tem2 = XCDR (tem2);
|
|
|
1342 QUIT;
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345 }
|
|
|
1346 else
|
|
|
1347 prev = tail;
|
|
|
1348 tail = Fcdr (tail);
|
|
|
1349 QUIT;
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1353 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1354 an existing member for the current source. */
|
|
|
1355 if (loading || !foundit)
|
|
|
1356 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1357 Vload_history);
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 #else /* !LOADHIST */
|
|
|
1361 #define build_load_history(x,y)
|
|
|
1362 #endif /* !LOADHIST */
|
|
|
1363
|
|
|
1364
|
|
|
1365 static void
|
|
|
1366 readevalloop (Lisp_Object readcharfun,
|
|
|
1367 Lisp_Object sourcename,
|
|
|
1368 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1369 int printflag)
|
|
|
1370 {
|
|
|
1371 /* This function can GC */
|
|
867
|
1372 REGISTER Ichar c;
|
|
428
|
1373 REGISTER Lisp_Object val = Qnil;
|
|
|
1374 int speccount = specpdl_depth ();
|
|
|
1375 struct gcpro gcpro1, gcpro2;
|
|
|
1376 struct buffer *b = 0;
|
|
|
1377
|
|
|
1378 if (BUFFERP (readcharfun))
|
|
|
1379 b = XBUFFER (readcharfun);
|
|
|
1380 else if (MARKERP (readcharfun))
|
|
|
1381 b = XMARKER (readcharfun)->buffer;
|
|
|
1382
|
|
|
1383 /* Don't do this. It is not necessary, and it needlessly exposes
|
|
|
1384 READCHARFUN (which can be a stream) to Lisp. --hniksic */
|
|
|
1385 /*specbind (Qstandard_input, readcharfun);*/
|
|
|
1386
|
|
|
1387 specbind (Qcurrent_load_list, Qnil);
|
|
|
1388
|
|
|
1389 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1390 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1391 #endif
|
|
|
1392 GCPRO2 (val, sourcename);
|
|
|
1393
|
|
|
1394 LOADHIST_ATTACH (sourcename);
|
|
|
1395
|
|
|
1396 while (1)
|
|
|
1397 {
|
|
|
1398 QUIT;
|
|
|
1399
|
|
|
1400 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
563
|
1401 invalid_operation ("Reading from killed buffer", Qunbound);
|
|
428
|
1402
|
|
|
1403 c = readchar (readcharfun);
|
|
|
1404 if (c == ';')
|
|
|
1405 {
|
|
|
1406 /* Skip comment */
|
|
|
1407 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1408 QUIT;
|
|
|
1409 continue;
|
|
|
1410 }
|
|
|
1411 if (c < 0)
|
|
|
1412 break;
|
|
|
1413
|
|
|
1414 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1415 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1416 continue;
|
|
|
1417
|
|
814
|
1418 unreadchar (readcharfun, c);
|
|
|
1419 Vread_objects = Qnil;
|
|
|
1420 if (NILP (Vload_read_function))
|
|
|
1421 val = read0 (readcharfun);
|
|
428
|
1422 else
|
|
814
|
1423 val = call1 (Vload_read_function, readcharfun);
|
|
428
|
1424 val = (*evalfun) (val);
|
|
|
1425 if (printflag)
|
|
|
1426 {
|
|
|
1427 Vvalues = Fcons (val, Vvalues);
|
|
|
1428 if (EQ (Vstandard_output, Qt))
|
|
|
1429 Fprin1 (val, Qnil);
|
|
|
1430 else
|
|
|
1431 Fprint (val, Qnil);
|
|
|
1432 }
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1436 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1437 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1438 sourcename);
|
|
|
1439 UNGCPRO;
|
|
|
1440
|
|
771
|
1441 unbind_to (speccount);
|
|
428
|
1442 }
|
|
|
1443
|
|
|
1444 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /*
|
|
|
1445 Execute BUFFER as Lisp code.
|
|
|
1446 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1447 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1448 PRINTFLAG controls printing of output:
|
|
444
|
1449 nil means discard it; anything else is a stream for printing.
|
|
428
|
1450
|
|
|
1451 If there is no error, point does not move. If there is an error,
|
|
|
1452 point remains at the end of the last character read from the buffer.
|
|
|
1453 */
|
|
444
|
1454 (buffer, printflag))
|
|
428
|
1455 {
|
|
|
1456 /* This function can GC */
|
|
|
1457 int speccount = specpdl_depth ();
|
|
|
1458 Lisp_Object tem, buf;
|
|
|
1459
|
|
444
|
1460 if (NILP (buffer))
|
|
428
|
1461 buf = Fcurrent_buffer ();
|
|
|
1462 else
|
|
444
|
1463 buf = Fget_buffer (buffer);
|
|
428
|
1464 if (NILP (buf))
|
|
563
|
1465 invalid_argument ("No such buffer", Qunbound);
|
|
428
|
1466
|
|
|
1467 if (NILP (printflag))
|
|
|
1468 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1469 else
|
|
|
1470 tem = printflag;
|
|
|
1471 specbind (Qstandard_output, tem);
|
|
|
1472 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1473 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1474 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1475 !NILP (printflag));
|
|
|
1476
|
|
771
|
1477 return unbind_to (speccount);
|
|
428
|
1478 }
|
|
|
1479
|
|
|
1480 #if 0
|
|
826
|
1481 DEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /*
|
|
428
|
1482 Execute the current buffer as Lisp code.
|
|
|
1483 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1484 nil means discard it; anything else is stream for print.
|
|
|
1485
|
|
|
1486 If there is no error, point does not move. If there is an error,
|
|
|
1487 point remains at the end of the last character read from the buffer.
|
|
|
1488 */
|
|
|
1489 (printflag))
|
|
|
1490 {
|
|
|
1491 code omitted;
|
|
|
1492 }
|
|
|
1493 #endif /* 0 */
|
|
|
1494
|
|
|
1495 DEFUN ("eval-region", Feval_region, 2, 3, "r", /*
|
|
|
1496 Execute the region as Lisp code.
|
|
444
|
1497 When called from programs, expects two arguments START and END
|
|
428
|
1498 giving starting and ending indices in the current buffer
|
|
|
1499 of the text to be executed.
|
|
444
|
1500 Programs can pass third optional argument STREAM which controls output:
|
|
428
|
1501 nil means discard it; anything else is stream for printing it.
|
|
|
1502
|
|
|
1503 If there is no error, point does not move. If there is an error,
|
|
|
1504 point remains at the end of the last character read from the buffer.
|
|
|
1505
|
|
|
1506 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1507 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1508 see some text temporarily disappear because of this.
|
|
|
1509 */
|
|
444
|
1510 (start, end, stream))
|
|
428
|
1511 {
|
|
|
1512 /* This function can GC */
|
|
|
1513 int speccount = specpdl_depth ();
|
|
|
1514 Lisp_Object tem;
|
|
|
1515 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1516
|
|
444
|
1517 if (NILP (stream))
|
|
428
|
1518 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1519 else
|
|
444
|
1520 tem = stream;
|
|
428
|
1521 specbind (Qstandard_output, tem);
|
|
|
1522
|
|
444
|
1523 if (NILP (stream))
|
|
428
|
1524 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
844
|
1525 record_unwind_protect (save_restriction_restore,
|
|
|
1526 save_restriction_save (current_buffer));
|
|
428
|
1527
|
|
444
|
1528 /* This both uses start and checks its type. */
|
|
|
1529 Fgoto_char (start, cbuf);
|
|
|
1530 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), end, cbuf);
|
|
428
|
1531 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
444
|
1532 !NILP (stream));
|
|
428
|
1533
|
|
771
|
1534 return unbind_to (speccount);
|
|
428
|
1535 }
|
|
|
1536
|
|
|
1537 DEFUN ("read", Fread, 0, 1, 0, /*
|
|
|
1538 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1539 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1540 STREAM or the value of `standard-input' may be:
|
|
|
1541 a buffer (read from point and advance it)
|
|
|
1542 a marker (read from where it points and advance it)
|
|
|
1543 a function (call it with no arguments for each character,
|
|
|
1544 call it with a char as argument to push a char back)
|
|
|
1545 a string (takes text from string, starting at the beginning)
|
|
|
1546 t (read text line using minibuffer and use it).
|
|
|
1547 */
|
|
|
1548 (stream))
|
|
|
1549 {
|
|
|
1550 if (NILP (stream))
|
|
|
1551 stream = Vstandard_input;
|
|
|
1552 if (EQ (stream, Qt))
|
|
|
1553 stream = Qread_char;
|
|
|
1554
|
|
|
1555 Vread_objects = Qnil;
|
|
|
1556
|
|
|
1557 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1558 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1559 #endif
|
|
|
1560 if (EQ (stream, Qread_char))
|
|
|
1561 {
|
|
|
1562 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
771
|
1563 build_msg_string ("Lisp expression: "));
|
|
428
|
1564 return Fcar (Fread_from_string (val, Qnil, Qnil));
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 if (STRINGP (stream))
|
|
|
1568 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1569
|
|
|
1570 return read0 (stream);
|
|
|
1571 }
|
|
|
1572
|
|
|
1573 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /*
|
|
|
1574 Read one Lisp expression which is represented as text by STRING.
|
|
|
1575 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1576 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1577 they default to 0 and (length STRING) respectively.
|
|
|
1578 */
|
|
|
1579 (string, start, end))
|
|
|
1580 {
|
|
|
1581 Bytecount startval, endval;
|
|
|
1582 Lisp_Object tem;
|
|
|
1583 Lisp_Object lispstream = Qnil;
|
|
|
1584 struct gcpro gcpro1;
|
|
|
1585
|
|
|
1586 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1587 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1588 #endif
|
|
|
1589 GCPRO1 (lispstream);
|
|
|
1590 CHECK_STRING (string);
|
|
|
1591 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1592 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1593 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1594 endval - startval);
|
|
|
1595
|
|
|
1596 Vread_objects = Qnil;
|
|
|
1597
|
|
|
1598 tem = read0 (lispstream);
|
|
|
1599 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1600 At least our reader is reentrant ... */
|
|
|
1601 tem =
|
|
|
1602 (Fcons (tem, make_int
|
|
793
|
1603 (string_index_byte_to_char
|
|
771
|
1604 (string,
|
|
428
|
1605 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1606 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1607 UNGCPRO;
|
|
|
1608 return tem;
|
|
|
1609 }
|
|
|
1610
|
|
|
1611
|
|
|
1612
|
|
|
1613 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1614 are not allowed. See also read1(). */
|
|
|
1615 static Lisp_Object
|
|
|
1616 read0 (Lisp_Object readcharfun)
|
|
|
1617 {
|
|
|
1618 Lisp_Object val = read1 (readcharfun);
|
|
|
1619
|
|
|
1620 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1621 {
|
|
867
|
1622 Ichar c = XCHAR (XCDR (val));
|
|
853
|
1623 free_cons (val);
|
|
428
|
1624 return Fsignal (Qinvalid_read_syntax,
|
|
|
1625 list1 (Fchar_to_string (make_char (c))));
|
|
|
1626 }
|
|
|
1627
|
|
|
1628 return val;
|
|
|
1629 }
|
|
|
1630
|
|
867
|
1631 static Ichar
|
|
428
|
1632 read_escape (Lisp_Object readcharfun)
|
|
|
1633 {
|
|
|
1634 /* This function can GC */
|
|
867
|
1635 Ichar c = readchar (readcharfun);
|
|
428
|
1636
|
|
|
1637 if (c < 0)
|
|
563
|
1638 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1639
|
|
|
1640 switch (c)
|
|
|
1641 {
|
|
|
1642 case 'a': return '\007';
|
|
|
1643 case 'b': return '\b';
|
|
|
1644 case 'd': return 0177;
|
|
|
1645 case 'e': return 033;
|
|
|
1646 case 'f': return '\f';
|
|
|
1647 case 'n': return '\n';
|
|
|
1648 case 'r': return '\r';
|
|
|
1649 case 't': return '\t';
|
|
|
1650 case 'v': return '\v';
|
|
|
1651 case '\n': return -1;
|
|
|
1652
|
|
|
1653 case 'M':
|
|
|
1654 c = readchar (readcharfun);
|
|
|
1655 if (c < 0)
|
|
563
|
1656 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1657 if (c != '-')
|
|
563
|
1658 syntax_error ("Invalid escape character syntax", Qunbound);
|
|
428
|
1659 c = readchar (readcharfun);
|
|
|
1660 if (c < 0)
|
|
563
|
1661 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1662 if (c == '\\')
|
|
|
1663 c = read_escape (readcharfun);
|
|
|
1664 return c | 0200;
|
|
|
1665
|
|
|
1666 /* Originally, FSF_KEYS provided a degree of FSF Emacs
|
|
|
1667 compatibility by defining character "modifiers" alt, super,
|
|
|
1668 hyper and shift to infest the characters (i.e. integers).
|
|
|
1669
|
|
|
1670 However, this doesn't cut it for XEmacs 20, which
|
|
|
1671 distinguishes characters from integers. Without Mule, ?\H-a
|
|
|
1672 simply returns ?a because every character is clipped into
|
|
|
1673 0-255. Under Mule it is much worse -- ?\H-a with FSF_KEYS
|
|
|
1674 produces an illegal character, and moves us to crash-land.
|
|
|
1675
|
|
|
1676 For these reasons, FSF_KEYS hack is useless and without hope
|
|
|
1677 of ever working under XEmacs 20. */
|
|
|
1678 #ifdef FSF_KEYS
|
|
831
|
1679 /* Deleted */
|
|
|
1680 #endif
|
|
428
|
1681
|
|
|
1682 case 'C':
|
|
|
1683 c = readchar (readcharfun);
|
|
|
1684 if (c < 0)
|
|
563
|
1685 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1686 if (c != '-')
|
|
563
|
1687 syntax_error ("Invalid escape character syntax", Qunbound);
|
|
428
|
1688 case '^':
|
|
|
1689 c = readchar (readcharfun);
|
|
|
1690 if (c < 0)
|
|
563
|
1691 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1692 if (c == '\\')
|
|
|
1693 c = read_escape (readcharfun);
|
|
|
1694 /* FSFmacs junk for non-ASCII controls.
|
|
|
1695 Not used here. */
|
|
|
1696 if (c == '?')
|
|
|
1697 return 0177;
|
|
|
1698 else
|
|
|
1699 return c & (0200 | 037);
|
|
|
1700
|
|
|
1701 case '0':
|
|
|
1702 case '1':
|
|
|
1703 case '2':
|
|
|
1704 case '3':
|
|
|
1705 case '4':
|
|
|
1706 case '5':
|
|
|
1707 case '6':
|
|
|
1708 case '7':
|
|
|
1709 /* An octal escape, as in ANSI C. */
|
|
|
1710 {
|
|
867
|
1711 REGISTER Ichar i = c - '0';
|
|
428
|
1712 REGISTER int count = 0;
|
|
|
1713 while (++count < 3)
|
|
|
1714 {
|
|
|
1715 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1716 i = (i << 3) + (c - '0');
|
|
|
1717 else
|
|
|
1718 {
|
|
|
1719 unreadchar (readcharfun, c);
|
|
|
1720 break;
|
|
|
1721 }
|
|
|
1722 }
|
|
831
|
1723 if (i >= 0400)
|
|
|
1724 syntax_error ("Attempt to create non-ASCII/ISO-8859-1 character",
|
|
|
1725 make_int (i));
|
|
428
|
1726 return i;
|
|
|
1727 }
|
|
|
1728
|
|
|
1729 case 'x':
|
|
|
1730 /* A hex escape, as in ANSI C, except that we only allow latin-1
|
|
|
1731 characters to be read this way. What is "\x4e03" supposed to
|
|
|
1732 mean, anyways, if the internal representation is hidden?
|
|
|
1733 This is also consistent with the treatment of octal escapes. */
|
|
|
1734 {
|
|
867
|
1735 REGISTER Ichar i = 0;
|
|
428
|
1736 REGISTER int count = 0;
|
|
|
1737 while (++count <= 2)
|
|
|
1738 {
|
|
|
1739 c = readchar (readcharfun);
|
|
867
|
1740 /* Remember, can't use isdigit(), isalpha() etc. on Ichars */
|
|
428
|
1741 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1742 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1743 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1744 else
|
|
|
1745 {
|
|
|
1746 unreadchar (readcharfun, c);
|
|
|
1747 break;
|
|
|
1748 }
|
|
|
1749 }
|
|
|
1750 return i;
|
|
|
1751 }
|
|
|
1752
|
|
|
1753 #ifdef MULE
|
|
|
1754 /* #### need some way of reading an extended character with
|
|
|
1755 an escape sequence. */
|
|
|
1756 #endif
|
|
|
1757
|
|
|
1758 default:
|
|
|
1759 return c;
|
|
|
1760 }
|
|
|
1761 }
|
|
|
1762
|
|
|
1763
|
|
|
1764
|
|
|
1765 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1766 static Bytecount
|
|
867
|
1767 read_atom_0 (Lisp_Object readcharfun, Ichar firstchar, int *saw_a_backslash)
|
|
428
|
1768 {
|
|
|
1769 /* This function can GC */
|
|
867
|
1770 Ichar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
428
|
1771 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1772
|
|
|
1773 *saw_a_backslash = 0;
|
|
|
1774
|
|
|
1775 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1776 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1777 || c == '(' || c == ')'
|
|
|
1778 || c == '[' || c == ']' || c == '#'
|
|
|
1779 ))
|
|
|
1780 {
|
|
|
1781 if (c == '\\')
|
|
|
1782 {
|
|
|
1783 c = readchar (readcharfun);
|
|
|
1784 if (c < 0)
|
|
563
|
1785 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
1786 *saw_a_backslash = 1;
|
|
|
1787 }
|
|
867
|
1788 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), c);
|
|
428
|
1789 QUIT;
|
|
|
1790 c = readchar (readcharfun);
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 if (c >= 0)
|
|
|
1794 unreadchar (readcharfun, c);
|
|
|
1795 /* blasted terminating 0 */
|
|
867
|
1796 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), 0);
|
|
428
|
1797 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1798
|
|
|
1799 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1;
|
|
|
1800 }
|
|
|
1801
|
|
867
|
1802 static Lisp_Object parse_integer (const Ibyte *buf, Bytecount len, int base);
|
|
428
|
1803
|
|
|
1804 static Lisp_Object
|
|
|
1805 read_atom (Lisp_Object readcharfun,
|
|
867
|
1806 Ichar firstchar,
|
|
428
|
1807 int uninterned_symbol)
|
|
|
1808 {
|
|
|
1809 /* This function can GC */
|
|
|
1810 int saw_a_backslash;
|
|
|
1811 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1812 char *read_ptr = (char *)
|
|
|
1813 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1814
|
|
|
1815 /* Is it an integer? */
|
|
|
1816 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1817 {
|
|
|
1818 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1819 being an integer or a float. This means that 123\456 is a
|
|
|
1820 symbol, as is \123 (which is the way (intern "123") prints).
|
|
|
1821 Also, if token was preceded by #:, it's always a symbol.
|
|
|
1822 */
|
|
|
1823 char *p = read_ptr + len;
|
|
|
1824 char *p1 = read_ptr;
|
|
|
1825
|
|
|
1826 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1827 if (p1 != p)
|
|
|
1828 {
|
|
|
1829 int c;
|
|
|
1830
|
|
|
1831 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1832 p1++;
|
|
|
1833 /* Integers can have trailing decimal points. */
|
|
|
1834 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1835 p1++;
|
|
|
1836 if (p1 == p)
|
|
|
1837 {
|
|
|
1838 /* It is an integer. */
|
|
|
1839 if (p1[-1] == '.')
|
|
|
1840 p1[-1] = '\0';
|
|
|
1841 #if 0
|
|
|
1842 {
|
|
|
1843 int number = 0;
|
|
|
1844 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1845 number = atoi (read_buffer);
|
|
|
1846 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1847 number = atol (read_buffer);
|
|
|
1848 else
|
|
|
1849 abort ();
|
|
|
1850 return make_int (number);
|
|
|
1851 }
|
|
|
1852 #else
|
|
867
|
1853 return parse_integer ((Ibyte *) read_ptr, len, 10);
|
|
428
|
1854 #endif
|
|
|
1855 }
|
|
|
1856 }
|
|
|
1857 if (isfloat_string (read_ptr))
|
|
|
1858 return make_float (atof (read_ptr));
|
|
|
1859 }
|
|
|
1860
|
|
|
1861 {
|
|
|
1862 Lisp_Object sym;
|
|
|
1863 if (uninterned_symbol)
|
|
867
|
1864 sym = Fmake_symbol ( make_string ((Ibyte *) read_ptr, len));
|
|
428
|
1865 else
|
|
|
1866 {
|
|
867
|
1867 Lisp_Object name = make_string ((Ibyte *) read_ptr, len);
|
|
428
|
1868 sym = Fintern (name, Qnil);
|
|
|
1869 }
|
|
|
1870 return sym;
|
|
|
1871 }
|
|
|
1872 }
|
|
|
1873
|
|
|
1874
|
|
|
1875 static Lisp_Object
|
|
867
|
1876 parse_integer (const Ibyte *buf, Bytecount len, int base)
|
|
428
|
1877 {
|
|
867
|
1878 const Ibyte *lim = buf + len;
|
|
|
1879 const Ibyte *p = buf;
|
|
428
|
1880 EMACS_UINT num = 0;
|
|
|
1881 int negativland = 0;
|
|
|
1882
|
|
|
1883 if (*p == '-')
|
|
|
1884 {
|
|
|
1885 negativland = 1;
|
|
|
1886 p++;
|
|
|
1887 }
|
|
|
1888 else if (*p == '+')
|
|
|
1889 {
|
|
|
1890 p++;
|
|
|
1891 }
|
|
|
1892
|
|
|
1893 if (p == lim)
|
|
|
1894 goto loser;
|
|
|
1895
|
|
|
1896 for (; (p < lim) && (*p != '\0'); p++)
|
|
|
1897 {
|
|
|
1898 int c = *p;
|
|
|
1899 EMACS_UINT onum;
|
|
|
1900
|
|
|
1901 if (isdigit (c))
|
|
|
1902 c = c - '0';
|
|
|
1903 else if (isupper (c))
|
|
|
1904 c = c - 'A' + 10;
|
|
|
1905 else if (islower (c))
|
|
|
1906 c = c - 'a' + 10;
|
|
|
1907 else
|
|
|
1908 goto loser;
|
|
|
1909
|
|
|
1910 if (c < 0 || c >= base)
|
|
|
1911 goto loser;
|
|
|
1912
|
|
|
1913 onum = num;
|
|
|
1914 num = num * base + c;
|
|
|
1915 if (num < onum)
|
|
|
1916 goto overflow;
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 {
|
|
|
1920 EMACS_INT int_result = negativland ? - (EMACS_INT) num : (EMACS_INT) num;
|
|
|
1921 Lisp_Object result = make_int (int_result);
|
|
|
1922 if (num && ((XINT (result) < 0) != negativland))
|
|
|
1923 goto overflow;
|
|
|
1924 if (XINT (result) != int_result)
|
|
|
1925 goto overflow;
|
|
|
1926 return result;
|
|
|
1927 }
|
|
|
1928 overflow:
|
|
|
1929 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
1930 list3 (build_msg_string
|
|
428
|
1931 ("Integer constant overflow in reader"),
|
|
|
1932 make_string (buf, len),
|
|
|
1933 make_int (base)));
|
|
|
1934 loser:
|
|
|
1935 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
1936 list3 (build_msg_string
|
|
428
|
1937 ("Invalid integer constant in reader"),
|
|
|
1938 make_string (buf, len),
|
|
|
1939 make_int (base)));
|
|
|
1940 }
|
|
|
1941
|
|
|
1942
|
|
|
1943 static Lisp_Object
|
|
|
1944 read_integer (Lisp_Object readcharfun, int base)
|
|
|
1945 {
|
|
|
1946 /* This function can GC */
|
|
|
1947 int saw_a_backslash;
|
|
|
1948 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
1949 return (parse_integer
|
|
|
1950 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
1951 ((saw_a_backslash)
|
|
|
1952 ? 0 /* make parse_integer signal error */
|
|
|
1953 : len),
|
|
|
1954 base));
|
|
|
1955 }
|
|
|
1956
|
|
|
1957 static Lisp_Object
|
|
|
1958 read_bit_vector (Lisp_Object readcharfun)
|
|
|
1959 {
|
|
|
1960 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char);
|
|
440
|
1961 Lisp_Object val;
|
|
428
|
1962
|
|
|
1963 while (1)
|
|
|
1964 {
|
|
444
|
1965 unsigned char bit;
|
|
867
|
1966 Ichar c = readchar (readcharfun);
|
|
444
|
1967 if (c == '0')
|
|
|
1968 bit = 0;
|
|
|
1969 else if (c == '1')
|
|
|
1970 bit = 1;
|
|
|
1971 else
|
|
|
1972 {
|
|
|
1973 if (c >= 0)
|
|
|
1974 unreadchar (readcharfun, c);
|
|
|
1975 break;
|
|
|
1976 }
|
|
|
1977 Dynarr_add (dyn, bit);
|
|
428
|
1978 }
|
|
|
1979
|
|
440
|
1980 val = make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
1981 Dynarr_length (dyn));
|
|
|
1982 Dynarr_free (dyn);
|
|
|
1983
|
|
|
1984 return val;
|
|
428
|
1985 }
|
|
|
1986
|
|
|
1987
|
|
|
1988
|
|
|
1989 /* structures */
|
|
|
1990
|
|
|
1991 struct structure_type *
|
|
|
1992 define_structure_type (Lisp_Object type,
|
|
|
1993 int (*validate) (Lisp_Object data,
|
|
578
|
1994 Error_Behavior errb),
|
|
428
|
1995 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
1996 {
|
|
|
1997 struct structure_type st;
|
|
|
1998
|
|
|
1999 st.type = type;
|
|
|
2000 st.keywords = Dynarr_new (structure_keyword_entry);
|
|
|
2001 st.validate = validate;
|
|
|
2002 st.instantiate = instantiate;
|
|
|
2003 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
2004
|
|
|
2005 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
2006 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
2007 }
|
|
|
2008
|
|
|
2009 void
|
|
|
2010 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
2011 int (*validate) (Lisp_Object keyword,
|
|
|
2012 Lisp_Object value,
|
|
578
|
2013 Error_Behavior errb))
|
|
428
|
2014 {
|
|
|
2015 struct structure_keyword_entry en;
|
|
|
2016
|
|
|
2017 en.keyword = keyword;
|
|
|
2018 en.validate = validate;
|
|
|
2019 Dynarr_add (st->keywords, en);
|
|
|
2020 }
|
|
|
2021
|
|
|
2022 static struct structure_type *
|
|
|
2023 recognized_structure_type (Lisp_Object type)
|
|
|
2024 {
|
|
|
2025 int i;
|
|
|
2026
|
|
|
2027 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
2028 {
|
|
|
2029 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
2030 if (EQ (st->type, type))
|
|
|
2031 return st;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 return 0;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037 static Lisp_Object
|
|
|
2038 read_structure (Lisp_Object readcharfun)
|
|
|
2039 {
|
|
867
|
2040 Ichar c = readchar (readcharfun);
|
|
428
|
2041 Lisp_Object list = Qnil;
|
|
|
2042 Lisp_Object orig_list = Qnil;
|
|
|
2043 Lisp_Object already_seen = Qnil;
|
|
|
2044 int keyword_count;
|
|
|
2045 struct structure_type *st;
|
|
|
2046 struct gcpro gcpro1, gcpro2;
|
|
|
2047
|
|
|
2048 GCPRO2 (orig_list, already_seen);
|
|
|
2049 if (c != '(')
|
|
442
|
2050 RETURN_UNGCPRO (continuable_read_syntax_error ("#s not followed by paren"));
|
|
428
|
2051 list = read_list (readcharfun, ')', 0, 0);
|
|
|
2052 orig_list = list;
|
|
|
2053 {
|
|
|
2054 int len = XINT (Flength (list));
|
|
|
2055 if (len == 0)
|
|
442
|
2056 RETURN_UNGCPRO (continuable_read_syntax_error
|
|
428
|
2057 ("structure type not specified"));
|
|
|
2058 if (!(len & 1))
|
|
|
2059 RETURN_UNGCPRO
|
|
442
|
2060 (continuable_read_syntax_error
|
|
428
|
2061 ("structures must have alternating keyword/value pairs"));
|
|
|
2062 }
|
|
|
2063
|
|
|
2064 st = recognized_structure_type (XCAR (list));
|
|
|
2065 if (!st)
|
|
|
2066 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
771
|
2067 list2 (build_msg_string
|
|
428
|
2068 ("unrecognized structure type"),
|
|
|
2069 XCAR (list))));
|
|
|
2070
|
|
|
2071 list = Fcdr (list);
|
|
|
2072 keyword_count = Dynarr_length (st->keywords);
|
|
|
2073 while (!NILP (list))
|
|
|
2074 {
|
|
|
2075 Lisp_Object keyword, value;
|
|
|
2076 int i;
|
|
|
2077 struct structure_keyword_entry *en = NULL;
|
|
|
2078
|
|
|
2079 keyword = Fcar (list);
|
|
|
2080 list = Fcdr (list);
|
|
|
2081 value = Fcar (list);
|
|
|
2082 list = Fcdr (list);
|
|
|
2083
|
|
|
2084 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
|
2085 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
771
|
2086 list2 (build_msg_string
|
|
428
|
2087 ("structure keyword already seen"),
|
|
|
2088 keyword)));
|
|
|
2089
|
|
|
2090 for (i = 0; i < keyword_count; i++)
|
|
|
2091 {
|
|
|
2092 en = Dynarr_atp (st->keywords, i);
|
|
|
2093 if (EQ (keyword, en->keyword))
|
|
|
2094 break;
|
|
|
2095 }
|
|
|
2096
|
|
|
2097 if (i == keyword_count)
|
|
|
2098 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
771
|
2099 list2 (build_msg_string
|
|
428
|
2100 ("unrecognized structure keyword"),
|
|
|
2101 keyword)));
|
|
|
2102
|
|
|
2103 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
2104 RETURN_UNGCPRO
|
|
|
2105 (Fsignal (Qinvalid_read_syntax,
|
|
771
|
2106 list3 (build_msg_string
|
|
428
|
2107 ("invalid value for structure keyword"),
|
|
|
2108 keyword, value)));
|
|
|
2109
|
|
|
2110 already_seen = Fcons (keyword, already_seen);
|
|
|
2111 }
|
|
|
2112
|
|
|
2113 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
|
2114 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
771
|
2115 list2 (build_msg_string
|
|
428
|
2116 ("invalid structure initializer"),
|
|
|
2117 orig_list)));
|
|
|
2118
|
|
|
2119 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
|
2120 }
|
|
|
2121
|
|
|
2122
|
|
|
2123 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
2124 int terminator);
|
|
|
2125 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
2126
|
|
|
2127 /* Get the next character; filter out whitespace and comments */
|
|
|
2128
|
|
867
|
2129 static Ichar
|
|
428
|
2130 reader_nextchar (Lisp_Object readcharfun)
|
|
|
2131 {
|
|
|
2132 /* This function can GC */
|
|
867
|
2133 Ichar c;
|
|
428
|
2134
|
|
|
2135 retry:
|
|
|
2136 QUIT;
|
|
|
2137 c = readchar (readcharfun);
|
|
|
2138 if (c < 0)
|
|
563
|
2139 signal_error (Qend_of_file, 0, READCHARFUN_MAYBE (readcharfun));
|
|
428
|
2140
|
|
|
2141 switch (c)
|
|
|
2142 {
|
|
|
2143 default:
|
|
|
2144 {
|
|
|
2145 /* Ignore whitespace and control characters */
|
|
|
2146 if (c <= 040)
|
|
|
2147 goto retry;
|
|
|
2148 return c;
|
|
|
2149 }
|
|
|
2150
|
|
|
2151 case ';':
|
|
|
2152 {
|
|
|
2153 /* Comment */
|
|
|
2154 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2155 QUIT;
|
|
|
2156 goto retry;
|
|
|
2157 }
|
|
|
2158 }
|
|
|
2159 }
|
|
|
2160
|
|
|
2161 #if 0
|
|
|
2162 static Lisp_Object
|
|
|
2163 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2164 {
|
|
|
2165 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b);
|
|
|
2166 }
|
|
|
2167 #endif
|
|
|
2168
|
|
|
2169 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2170 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2171 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2172 or dot followed by a non-number). To filter this stuff out,
|
|
|
2173 use read0(). */
|
|
|
2174
|
|
|
2175 static Lisp_Object
|
|
|
2176 read1 (Lisp_Object readcharfun)
|
|
|
2177 {
|
|
867
|
2178 Ichar c;
|
|
428
|
2179
|
|
|
2180 retry:
|
|
|
2181 c = reader_nextchar (readcharfun);
|
|
|
2182
|
|
|
2183 switch (c)
|
|
|
2184 {
|
|
|
2185 case '(':
|
|
|
2186 {
|
|
|
2187 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2188 /* if this is disabled, then other code in eval.c must be enabled */
|
|
867
|
2189 Ichar ch = reader_nextchar (readcharfun);
|
|
428
|
2190 switch (ch)
|
|
|
2191 {
|
|
|
2192 case '`':
|
|
|
2193 {
|
|
|
2194 Lisp_Object tem;
|
|
853
|
2195 int speccount = internal_bind_int (&old_backquote_flag,
|
|
|
2196 1 + old_backquote_flag);
|
|
428
|
2197 tem = read0 (readcharfun);
|
|
771
|
2198 unbind_to (speccount);
|
|
428
|
2199 ch = reader_nextchar (readcharfun);
|
|
|
2200 if (ch != ')')
|
|
|
2201 {
|
|
|
2202 unreadchar (readcharfun, ch);
|
|
|
2203 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2204 list1 (build_msg_string
|
|
428
|
2205 ("Weird old-backquote syntax")));
|
|
|
2206 }
|
|
|
2207 return list2 (Qbacktick, tem);
|
|
|
2208 }
|
|
|
2209 case ',':
|
|
|
2210 {
|
|
|
2211 if (old_backquote_flag)
|
|
|
2212 {
|
|
|
2213 Lisp_Object tem, comma_type;
|
|
|
2214 ch = readchar (readcharfun);
|
|
|
2215 if (ch == '@')
|
|
|
2216 comma_type = Qcomma_at;
|
|
|
2217 else
|
|
|
2218 {
|
|
|
2219 if (ch >= 0)
|
|
|
2220 unreadchar (readcharfun, ch);
|
|
|
2221 comma_type = Qcomma;
|
|
|
2222 }
|
|
|
2223 tem = read0 (readcharfun);
|
|
|
2224 ch = reader_nextchar (readcharfun);
|
|
|
2225 if (ch != ')')
|
|
|
2226 {
|
|
|
2227 unreadchar (readcharfun, ch);
|
|
|
2228 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2229 list1 (build_msg_string
|
|
428
|
2230 ("Weird old-backquote syntax")));
|
|
|
2231 }
|
|
|
2232 return list2 (comma_type, tem);
|
|
|
2233 }
|
|
|
2234 else
|
|
|
2235 {
|
|
|
2236 unreadchar (readcharfun, ch);
|
|
|
2237 #if 0
|
|
|
2238 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2239 list1 (build_msg_string ("Comma outside of backquote")));
|
|
428
|
2240 #else
|
|
|
2241 /* #### - yuck....but this is reverse compatible. */
|
|
|
2242 /* mostly this is required by edebug, which does its own
|
|
|
2243 annotated reading. We need to have an annotated_read
|
|
|
2244 function that records (with markers) the buffer
|
|
|
2245 positions of the elements that make up lists, then that
|
|
|
2246 can be used in edebug and bytecomp and the check above
|
|
|
2247 can go back in. --Stig */
|
|
|
2248 break;
|
|
|
2249 #endif
|
|
|
2250 }
|
|
|
2251 }
|
|
|
2252 default:
|
|
|
2253 unreadchar (readcharfun, ch);
|
|
|
2254 } /* switch(ch) */
|
|
|
2255 #endif /* old backquote crap... */
|
|
|
2256 return read_list (readcharfun, ')', 1, 1);
|
|
|
2257 }
|
|
|
2258 case '[':
|
|
|
2259 return read_vector (readcharfun, ']');
|
|
|
2260
|
|
|
2261 case ')':
|
|
|
2262 case ']':
|
|
|
2263 /* #### - huh? these don't do what they seem... */
|
|
|
2264 return noseeum_cons (Qunbound, make_char (c));
|
|
|
2265 case '.':
|
|
|
2266 {
|
|
|
2267 /* If a period is followed by a number, then we should read it
|
|
|
2268 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2269 pair.
|
|
|
2270 */
|
|
|
2271 c = readchar (readcharfun);
|
|
|
2272 unreadchar (readcharfun, c);
|
|
|
2273
|
|
867
|
2274 /* Can't use isdigit on Ichars */
|
|
428
|
2275 if (c < '0' || c > '9')
|
|
|
2276 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2277
|
|
|
2278 /* Note that read_atom will loop
|
|
|
2279 at least once, assuring that we will not try to UNREAD
|
|
|
2280 two characters in a row.
|
|
|
2281 (I think this doesn't matter anymore because there should
|
|
|
2282 be no more danger in unreading multiple characters) */
|
|
|
2283 return read_atom (readcharfun, '.', 0);
|
|
|
2284 }
|
|
|
2285
|
|
|
2286 case '#':
|
|
|
2287 {
|
|
|
2288 c = readchar (readcharfun);
|
|
|
2289 switch (c)
|
|
|
2290 {
|
|
|
2291 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2292 case '^':
|
|
|
2293 #endif
|
|
|
2294 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2295 case '&':
|
|
|
2296 #endif
|
|
|
2297 /* "#["-- byte-code constant syntax */
|
|
|
2298 /* purecons #[...] syntax */
|
|
|
2299 case '[': return read_compiled_function (readcharfun, ']'
|
|
|
2300 /*, purify_flag */ );
|
|
|
2301 /* "#:"-- gensym syntax */
|
|
|
2302 case ':': return read_atom (readcharfun, -1, 1);
|
|
|
2303 /* #'x => (function x) */
|
|
|
2304 case '\'': return list2 (Qfunction, read0 (readcharfun));
|
|
|
2305 #if 0
|
|
|
2306 /* RMS uses this syntax for fat-strings.
|
|
|
2307 If we use it for vectors, then obscure bugs happen.
|
|
|
2308 */
|
|
|
2309 /* "#(" -- Scheme/CL vector syntax */
|
|
|
2310 case '(': return read_vector (readcharfun, ')');
|
|
|
2311 #endif
|
|
|
2312 #if 0 /* FSFmacs */
|
|
|
2313 case '(':
|
|
|
2314 {
|
|
|
2315 Lisp_Object tmp;
|
|
|
2316 struct gcpro gcpro1;
|
|
|
2317
|
|
|
2318 /* Read the string itself. */
|
|
|
2319 tmp = read1 (readcharfun);
|
|
|
2320 if (!STRINGP (tmp))
|
|
|
2321 {
|
|
|
2322 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
853
|
2323 free_cons (tmp);
|
|
428
|
2324 return Fsignal (Qinvalid_read_syntax,
|
|
|
2325 list1 (build_string ("#")));
|
|
|
2326 }
|
|
|
2327 GCPRO1 (tmp);
|
|
|
2328 /* Read the intervals and their properties. */
|
|
|
2329 while (1)
|
|
|
2330 {
|
|
|
2331 Lisp_Object beg, end, plist;
|
|
867
|
2332 Ichar ch;
|
|
428
|
2333 int invalid = 0;
|
|
|
2334
|
|
|
2335 beg = read1 (readcharfun);
|
|
|
2336 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2337 {
|
|
|
2338 ch = XCHAR (XCDR (beg));
|
|
853
|
2339 free_cons (beg);
|
|
428
|
2340 if (ch == ')')
|
|
|
2341 break;
|
|
|
2342 else
|
|
|
2343 invalid = 1;
|
|
|
2344 }
|
|
|
2345 if (!invalid)
|
|
|
2346 {
|
|
|
2347 end = read1 (readcharfun);
|
|
|
2348 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2349 {
|
|
853
|
2350 free_cons (end);
|
|
428
|
2351 invalid = 1;
|
|
|
2352 }
|
|
|
2353 }
|
|
|
2354 if (!invalid)
|
|
|
2355 {
|
|
|
2356 plist = read1 (readcharfun);
|
|
|
2357 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2358 {
|
|
853
|
2359 free_cons (plist);
|
|
428
|
2360 invalid = 1;
|
|
|
2361 }
|
|
|
2362 }
|
|
|
2363 if (invalid)
|
|
|
2364 RETURN_UNGCPRO
|
|
|
2365 (Fsignal (Qinvalid_read_syntax,
|
|
|
2366 list2
|
|
771
|
2367 (build_msg_string ("invalid string property list"),
|
|
428
|
2368 XCDR (plist))));
|
|
|
2369 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2370 }
|
|
|
2371 UNGCPRO;
|
|
|
2372 return tmp;
|
|
|
2373 }
|
|
|
2374 #endif /* 0 */
|
|
|
2375 case '@':
|
|
|
2376 {
|
|
|
2377 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2378 That's used in .elc files to skip over doc strings
|
|
|
2379 and function definitions. */
|
|
|
2380 int i, nskip = 0;
|
|
|
2381
|
|
|
2382 /* Read a decimal integer. */
|
|
|
2383 while ((c = readchar (readcharfun)) >= 0
|
|
|
2384 && c >= '0' && c <= '9')
|
|
|
2385 nskip = (10 * nskip) + (c - '0');
|
|
|
2386 if (c >= 0)
|
|
|
2387 unreadchar (readcharfun, c);
|
|
|
2388
|
|
|
2389 /* FSF has code here that maybe caches the skipped
|
|
|
2390 string. See above for why this is totally
|
|
|
2391 losing. We handle this differently. */
|
|
|
2392
|
|
|
2393 /* Skip that many characters. */
|
|
|
2394 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2395 c = readchar (readcharfun);
|
|
|
2396
|
|
|
2397 goto retry;
|
|
|
2398 }
|
|
|
2399 case '$': return Vload_file_name_internal;
|
|
|
2400 /* bit vectors */
|
|
|
2401 case '*': return read_bit_vector (readcharfun);
|
|
|
2402 /* #o10 => 8 -- octal constant syntax */
|
|
|
2403 case 'o': return read_integer (readcharfun, 8);
|
|
|
2404 /* #xdead => 57005 -- hex constant syntax */
|
|
|
2405 case 'x': return read_integer (readcharfun, 16);
|
|
|
2406 /* #b010 => 2 -- binary constant syntax */
|
|
|
2407 case 'b': return read_integer (readcharfun, 2);
|
|
|
2408 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
|
2409 case 's': return read_structure (readcharfun);
|
|
|
2410 case '<':
|
|
|
2411 {
|
|
|
2412 unreadchar (readcharfun, c);
|
|
|
2413 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2414 list1 (build_msg_string ("Cannot read unreadable object")));
|
|
428
|
2415 }
|
|
|
2416 #ifdef FEATUREP_SYNTAX
|
|
|
2417 case '+':
|
|
|
2418 case '-':
|
|
|
2419 {
|
|
456
|
2420 Lisp_Object feature_exp, obj, tem;
|
|
428
|
2421 struct gcpro gcpro1, gcpro2;
|
|
|
2422
|
|
456
|
2423 feature_exp = read0(readcharfun);
|
|
428
|
2424 obj = read0(readcharfun);
|
|
|
2425
|
|
|
2426 /* the call to `featurep' may GC. */
|
|
456
|
2427 GCPRO2 (feature_exp, obj);
|
|
|
2428 tem = call1 (Qfeaturep, feature_exp);
|
|
428
|
2429 UNGCPRO;
|
|
|
2430
|
|
|
2431 if (c == '+' && NILP(tem)) goto retry;
|
|
|
2432 if (c == '-' && !NILP(tem)) goto retry;
|
|
|
2433 return obj;
|
|
|
2434 }
|
|
|
2435 #endif
|
|
|
2436 case '0': case '1': case '2': case '3': case '4':
|
|
|
2437 case '5': case '6': case '7': case '8': case '9':
|
|
|
2438 /* Reader forms that can reuse previously read objects. */
|
|
|
2439 {
|
|
|
2440 int n = 0;
|
|
|
2441 Lisp_Object found;
|
|
|
2442
|
|
|
2443 /* Using read_integer() here is impossible, because it
|
|
|
2444 chokes on `='. Using parse_integer() is too hard.
|
|
|
2445 So we simply read it in, and ignore overflows, which
|
|
|
2446 is safe. */
|
|
|
2447 while (c >= '0' && c <= '9')
|
|
|
2448 {
|
|
|
2449 n *= 10;
|
|
|
2450 n += c - '0';
|
|
|
2451 c = readchar (readcharfun);
|
|
|
2452 }
|
|
|
2453 found = assq_no_quit (make_int (n), Vread_objects);
|
|
|
2454 if (c == '=')
|
|
|
2455 {
|
|
|
2456 /* #n=object returns object, but associates it with
|
|
|
2457 n for #n#. */
|
|
|
2458 Lisp_Object obj;
|
|
|
2459 if (CONSP (found))
|
|
|
2460 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2461 list2 (build_msg_string
|
|
428
|
2462 ("Multiply defined symbol label"),
|
|
|
2463 make_int (n)));
|
|
|
2464 obj = read0 (readcharfun);
|
|
|
2465 Vread_objects = Fcons (Fcons (make_int (n), obj),
|
|
|
2466 Vread_objects);
|
|
|
2467 return obj;
|
|
|
2468 }
|
|
|
2469 else if (c == '#')
|
|
|
2470 {
|
|
|
2471 /* #n# returns a previously read object. */
|
|
|
2472 if (CONSP (found))
|
|
|
2473 return XCDR (found);
|
|
|
2474 else
|
|
|
2475 return Fsignal (Qinvalid_read_syntax,
|
|
771
|
2476 list2 (build_msg_string
|
|
428
|
2477 ("Undefined symbol label"),
|
|
|
2478 make_int (n)));
|
|
|
2479 }
|
|
|
2480 return Fsignal (Qinvalid_read_syntax,
|
|
|
2481 list1 (build_string ("#")));
|
|
|
2482 }
|
|
|
2483 default:
|
|
|
2484 {
|
|
|
2485 unreadchar (readcharfun, c);
|
|
|
2486 return Fsignal (Qinvalid_read_syntax,
|
|
|
2487 list1 (build_string ("#")));
|
|
|
2488 }
|
|
|
2489 }
|
|
|
2490 }
|
|
|
2491
|
|
|
2492 /* Quote */
|
|
|
2493 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2494
|
|
|
2495 #ifdef LISP_BACKQUOTES
|
|
|
2496 case '`':
|
|
|
2497 {
|
|
|
2498 Lisp_Object tem;
|
|
853
|
2499 int speccount = internal_bind_int (&new_backquote_flag,
|
|
|
2500 1 + new_backquote_flag);
|
|
428
|
2501 tem = read0 (readcharfun);
|
|
771
|
2502 unbind_to (speccount);
|
|
428
|
2503 return list2 (Qbackquote, tem);
|
|
|
2504 }
|
|
|
2505
|
|
|
2506 case ',':
|
|
|
2507 {
|
|
|
2508 if (new_backquote_flag)
|
|
|
2509 {
|
|
|
2510 Lisp_Object comma_type = Qnil;
|
|
|
2511 int ch = readchar (readcharfun);
|
|
|
2512
|
|
|
2513 if (ch == '@')
|
|
|
2514 comma_type = Qcomma_at;
|
|
|
2515 else if (ch == '.')
|
|
|
2516 comma_type = Qcomma_dot;
|
|
|
2517 else
|
|
|
2518 {
|
|
|
2519 if (ch >= 0)
|
|
|
2520 unreadchar (readcharfun, ch);
|
|
|
2521 comma_type = Qcomma;
|
|
|
2522 }
|
|
|
2523 return list2 (comma_type, read0 (readcharfun));
|
|
|
2524 }
|
|
|
2525 else
|
|
|
2526 {
|
|
|
2527 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2528 Thing(tm) is to signal an error here, because it's
|
|
|
2529 really invalid read syntax. Instead, this permits
|
|
|
2530 commas to begin symbols (unless they're inside
|
|
|
2531 backquotes). If an error is signalled here in the
|
|
|
2532 future, then commas should be invalid read syntax
|
|
|
2533 outside of backquotes anywhere they're found (i.e.
|
|
|
2534 they must be quoted in symbols) -- Stig */
|
|
|
2535 return read_atom (readcharfun, c, 0);
|
|
|
2536 }
|
|
|
2537 }
|
|
|
2538 #endif
|
|
|
2539
|
|
|
2540 case '?':
|
|
|
2541 {
|
|
|
2542 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2543 c = readchar (readcharfun);
|
|
|
2544 if (c < 0)
|
|
|
2545 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2546
|
|
|
2547 if (c == '\\')
|
|
|
2548 c = read_escape (readcharfun);
|
|
|
2549 return make_char (c);
|
|
|
2550 }
|
|
|
2551
|
|
|
2552 case '\"':
|
|
|
2553 {
|
|
|
2554 /* String */
|
|
|
2555 #ifdef I18N3
|
|
|
2556 /* #### If the input stream is translating, then the string
|
|
|
2557 should be marked as translatable by setting its
|
|
|
2558 `string-translatable' property to t. .el and .elc files
|
|
|
2559 normally are translating input streams. See Fgettext()
|
|
|
2560 and print_internal(). */
|
|
|
2561 #endif
|
|
|
2562 int cancel = 0;
|
|
|
2563
|
|
|
2564 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2565 while ((c = readchar (readcharfun)) >= 0
|
|
|
2566 && c != '\"')
|
|
|
2567 {
|
|
|
2568 if (c == '\\')
|
|
|
2569 c = read_escape (readcharfun);
|
|
|
2570 /* c is -1 if \ newline has just been seen */
|
|
|
2571 if (c == -1)
|
|
|
2572 {
|
|
|
2573 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2574 cancel = 1;
|
|
|
2575 }
|
|
|
2576 else
|
|
867
|
2577 Lstream_put_ichar (XLSTREAM (Vread_buffer_stream), c);
|
|
428
|
2578 QUIT;
|
|
|
2579 }
|
|
|
2580 if (c < 0)
|
|
|
2581 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2582
|
|
|
2583 /* If purifying, and string starts with \ newline,
|
|
|
2584 return zero instead. This is for doc strings
|
|
|
2585 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2586 if (purify_flag && NILP (Vinternal_doc_file_name) && cancel)
|
|
|
2587 return Qzero;
|
|
|
2588
|
|
|
2589 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2590 return
|
|
|
2591 make_string
|
|
|
2592 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2593 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2594 }
|
|
|
2595
|
|
|
2596 default:
|
|
|
2597 {
|
|
|
2598 /* Ignore whitespace and control characters */
|
|
|
2599 if (c <= 040)
|
|
|
2600 goto retry;
|
|
|
2601 return read_atom (readcharfun, c, 0);
|
|
|
2602 }
|
|
|
2603 }
|
|
|
2604 }
|
|
|
2605
|
|
|
2606
|
|
|
2607
|
|
|
2608 #define LEAD_INT 1
|
|
|
2609 #define DOT_CHAR 2
|
|
|
2610 #define TRAIL_INT 4
|
|
|
2611 #define E_CHAR 8
|
|
|
2612 #define EXP_INT 16
|
|
|
2613
|
|
|
2614 int
|
|
442
|
2615 isfloat_string (const char *cp)
|
|
428
|
2616 {
|
|
|
2617 int state = 0;
|
|
867
|
2618 const Ibyte *ucp = (const Ibyte *) cp;
|
|
428
|
2619
|
|
|
2620 if (*ucp == '+' || *ucp == '-')
|
|
|
2621 ucp++;
|
|
|
2622
|
|
|
2623 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2624 {
|
|
|
2625 state |= LEAD_INT;
|
|
|
2626 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2627 ucp++;
|
|
|
2628 }
|
|
|
2629 if (*ucp == '.')
|
|
|
2630 {
|
|
|
2631 state |= DOT_CHAR;
|
|
|
2632 ucp++;
|
|
|
2633 }
|
|
|
2634 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2635 {
|
|
|
2636 state |= TRAIL_INT;
|
|
|
2637 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2638 ucp++;
|
|
|
2639 }
|
|
|
2640 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2641 {
|
|
|
2642 state |= E_CHAR;
|
|
|
2643 ucp++;
|
|
|
2644 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2645 ucp++;
|
|
|
2646 }
|
|
|
2647
|
|
|
2648 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2649 {
|
|
|
2650 state |= EXP_INT;
|
|
|
2651 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2652 ucp++;
|
|
|
2653 }
|
|
|
2654 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2655 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2656 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2657 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2658 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2659 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2660 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2661 }
|
|
|
2662
|
|
|
2663 static void *
|
|
|
2664 sequence_reader (Lisp_Object readcharfun,
|
|
867
|
2665 Ichar terminator,
|
|
428
|
2666 void *state,
|
|
|
2667 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2668 void *state, Charcount len))
|
|
|
2669 {
|
|
|
2670 Charcount len;
|
|
|
2671
|
|
|
2672 for (len = 0; ; len++)
|
|
|
2673 {
|
|
867
|
2674 Ichar ch;
|
|
428
|
2675
|
|
|
2676 QUIT;
|
|
|
2677 ch = reader_nextchar (readcharfun);
|
|
|
2678
|
|
|
2679 if (ch == terminator)
|
|
|
2680 return state;
|
|
|
2681 else
|
|
|
2682 unreadchar (readcharfun, ch);
|
|
|
2683 #ifdef FEATUREP_SYNTAX
|
|
|
2684 if (ch == ']')
|
|
442
|
2685 read_syntax_error ("\"]\" in a list");
|
|
428
|
2686 else if (ch == ')')
|
|
442
|
2687 read_syntax_error ("\")\" in a vector");
|
|
428
|
2688 #endif
|
|
|
2689 state = ((conser) (readcharfun, state, len));
|
|
|
2690 }
|
|
|
2691 }
|
|
|
2692
|
|
|
2693
|
|
|
2694 struct read_list_state
|
|
|
2695 {
|
|
|
2696 Lisp_Object head;
|
|
|
2697 Lisp_Object tail;
|
|
|
2698 int length;
|
|
|
2699 int allow_dotted_lists;
|
|
867
|
2700 Ichar terminator;
|
|
428
|
2701 };
|
|
|
2702
|
|
|
2703 static void *
|
|
|
2704 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2705 {
|
|
|
2706 struct read_list_state *s = (struct read_list_state *) state;
|
|
|
2707 Lisp_Object elt;
|
|
|
2708
|
|
|
2709 elt = read1 (readcharfun);
|
|
|
2710
|
|
|
2711 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2712 {
|
|
|
2713 Lisp_Object tem = elt;
|
|
867
|
2714 Ichar ch;
|
|
428
|
2715
|
|
|
2716 elt = XCDR (elt);
|
|
853
|
2717 free_cons (tem);
|
|
428
|
2718 tem = Qnil;
|
|
|
2719 ch = XCHAR (elt);
|
|
|
2720 #ifdef FEATUREP_SYNTAX
|
|
|
2721 if (ch == s->terminator) /* deal with #+, #- reader macros */
|
|
|
2722 {
|
|
|
2723 unreadchar (readcharfun, s->terminator);
|
|
|
2724 goto done;
|
|
|
2725 }
|
|
|
2726 else if (ch == ']')
|
|
442
|
2727 read_syntax_error ("']' in a list");
|
|
428
|
2728 else if (ch == ')')
|
|
442
|
2729 read_syntax_error ("')' in a vector");
|
|
428
|
2730 else
|
|
|
2731 #endif
|
|
|
2732 if (ch != '.')
|
|
563
|
2733 signal_error (Qinternal_error, "BUG! Internal reader error", elt);
|
|
428
|
2734 else if (!s->allow_dotted_lists)
|
|
442
|
2735 read_syntax_error ("\".\" in a vector");
|
|
428
|
2736 else
|
|
|
2737 {
|
|
|
2738 if (!NILP (s->tail))
|
|
|
2739 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2740 else
|
|
|
2741 s->head = read0 (readcharfun);
|
|
|
2742 elt = read1 (readcharfun);
|
|
|
2743 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2744 {
|
|
|
2745 ch = XCHAR (XCDR (elt));
|
|
853
|
2746 free_cons (elt);
|
|
428
|
2747 if (ch == s->terminator)
|
|
|
2748 {
|
|
|
2749 unreadchar (readcharfun, s->terminator);
|
|
|
2750 goto done;
|
|
|
2751 }
|
|
|
2752 }
|
|
442
|
2753 read_syntax_error (". in wrong context");
|
|
428
|
2754 }
|
|
|
2755 }
|
|
|
2756
|
|
|
2757 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2758 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2759 {
|
|
|
2760 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2761 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2762 else
|
|
|
2763 Vcurrent_compiled_function_annotation = elt;
|
|
|
2764 }
|
|
|
2765 #endif
|
|
|
2766
|
|
|
2767 elt = Fcons (elt, Qnil);
|
|
|
2768 if (!NILP (s->tail))
|
|
|
2769 XCDR (s->tail) = elt;
|
|
|
2770 else
|
|
|
2771 s->head = elt;
|
|
|
2772 s->tail = elt;
|
|
|
2773 done:
|
|
|
2774 s->length++;
|
|
|
2775 return s;
|
|
|
2776 }
|
|
|
2777
|
|
|
2778
|
|
814
|
2779 /* allow_dotted_lists means that something like (foo bar . baz)
|
|
|
2780 is acceptable. If -1, means check for starting with defun
|
|
|
2781 and make structure pure. (not implemented, probably for very
|
|
|
2782 good reasons)
|
|
|
2783
|
|
|
2784 If check_for_doc_references, look for (#$ . INT) doc references
|
|
|
2785 in the list and record if load_force_doc_strings is non-zero.
|
|
|
2786 (Such doc references will be destroyed during the loadup phase
|
|
|
2787 by replacing with Qzero, because Snarf-documentation will fill
|
|
|
2788 them in again.)
|
|
|
2789
|
|
|
2790 WARNING: If you set this, you sure as hell better not call
|
|
|
2791 free_list() on the returned list here.
|
|
|
2792 */
|
|
428
|
2793
|
|
|
2794 static Lisp_Object
|
|
|
2795 read_list (Lisp_Object readcharfun,
|
|
867
|
2796 Ichar terminator,
|
|
428
|
2797 int allow_dotted_lists,
|
|
|
2798 int check_for_doc_references)
|
|
|
2799 {
|
|
|
2800 struct read_list_state s;
|
|
|
2801 struct gcpro gcpro1, gcpro2;
|
|
|
2802 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2803 Lisp_Object old_compiled_function_annotation =
|
|
|
2804 Vcurrent_compiled_function_annotation;
|
|
|
2805 #endif
|
|
|
2806
|
|
|
2807 s.head = Qnil;
|
|
|
2808 s.tail = Qnil;
|
|
|
2809 s.length = 0;
|
|
|
2810 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2811 s.terminator = terminator;
|
|
|
2812 GCPRO2 (s.head, s.tail);
|
|
|
2813
|
|
|
2814 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2815 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2816 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2817 #endif
|
|
|
2818
|
|
|
2819 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2820 {
|
|
|
2821 /* check now for any doc string references and record them
|
|
|
2822 for later. */
|
|
|
2823 Lisp_Object tail;
|
|
|
2824
|
|
|
2825 /* We might be dealing with an imperfect list so don't
|
|
|
2826 use LIST_LOOP */
|
|
|
2827 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2828 {
|
|
|
2829 Lisp_Object holding_cons = Qnil;
|
|
|
2830
|
|
|
2831 {
|
|
|
2832 Lisp_Object elem = XCAR (tail);
|
|
|
2833 /* elem might be (#$ . INT) ... */
|
|
|
2834 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2835 holding_cons = tail;
|
|
|
2836 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2837 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2838 `autoload' (autoload evaluates its arguments, while
|
|
|
2839 `defvar', `defun', etc. don't). */
|
|
|
2840 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2841 && CONSP (XCDR (elem)))
|
|
|
2842 {
|
|
|
2843 elem = XCAR (XCDR (elem));
|
|
|
2844 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2845 holding_cons = XCDR (XCAR (tail));
|
|
|
2846 }
|
|
|
2847 }
|
|
|
2848
|
|
|
2849 if (CONSP (holding_cons))
|
|
|
2850 {
|
|
|
2851 if (purify_flag)
|
|
|
2852 {
|
|
|
2853 if (NILP (Vinternal_doc_file_name))
|
|
|
2854 /* We have not yet called Snarf-documentation, so
|
|
|
2855 assume this file is described in the DOC file
|
|
|
2856 and Snarf-documentation will fill in the right
|
|
|
2857 value later. For now, replace the whole list
|
|
|
2858 with 0. */
|
|
|
2859 XCAR (holding_cons) = Qzero;
|
|
|
2860 else
|
|
|
2861 /* We have already called Snarf-documentation, so
|
|
|
2862 make a relative file name for this file, so it
|
|
|
2863 can be found properly in the installed Lisp
|
|
|
2864 directory. We don't use Fexpand_file_name
|
|
|
2865 because that would make the directory absolute
|
|
|
2866 now. */
|
|
|
2867 XCAR (XCAR (holding_cons)) =
|
|
|
2868 concat2 (build_string ("../lisp/"),
|
|
|
2869 Ffile_name_nondirectory
|
|
|
2870 (Vload_file_name_internal));
|
|
|
2871 }
|
|
|
2872 else
|
|
|
2873 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2874 and the string will be filled in properly in
|
|
|
2875 load_force_doc_string_unwind(). */
|
|
|
2876 Vload_force_doc_string_list =
|
|
|
2877 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2878 can modify it in-place. */
|
|
|
2879 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2880 }
|
|
|
2881 }
|
|
|
2882 }
|
|
|
2883
|
|
|
2884 UNGCPRO;
|
|
|
2885 return s.head;
|
|
|
2886 }
|
|
|
2887
|
|
|
2888 static Lisp_Object
|
|
|
2889 read_vector (Lisp_Object readcharfun,
|
|
867
|
2890 Ichar terminator)
|
|
428
|
2891 {
|
|
|
2892 Lisp_Object tem;
|
|
|
2893 Lisp_Object *p;
|
|
|
2894 int len;
|
|
|
2895 int i;
|
|
|
2896 struct read_list_state s;
|
|
|
2897 struct gcpro gcpro1, gcpro2;
|
|
|
2898
|
|
|
2899 s.head = Qnil;
|
|
|
2900 s.tail = Qnil;
|
|
|
2901 s.length = 0;
|
|
|
2902 s.allow_dotted_lists = 0;
|
|
|
2903 GCPRO2 (s.head, s.tail);
|
|
|
2904
|
|
|
2905 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2906
|
|
|
2907 UNGCPRO;
|
|
|
2908 tem = s.head;
|
|
|
2909 len = XINT (Flength (tem));
|
|
|
2910
|
|
814
|
2911 s.head = make_vector (len, Qnil);
|
|
428
|
2912
|
|
|
2913 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]);
|
|
|
2914 i < len;
|
|
|
2915 i++, p++)
|
|
|
2916 {
|
|
853
|
2917 Lisp_Object otem = tem;
|
|
428
|
2918 tem = Fcar (tem);
|
|
|
2919 *p = tem;
|
|
853
|
2920 tem = XCDR (otem);
|
|
428
|
2921 free_cons (otem);
|
|
|
2922 }
|
|
|
2923 return s.head;
|
|
|
2924 }
|
|
|
2925
|
|
|
2926 static Lisp_Object
|
|
867
|
2927 read_compiled_function (Lisp_Object readcharfun, Ichar terminator)
|
|
428
|
2928 {
|
|
|
2929 /* Accept compiled functions at read-time so that we don't
|
|
|
2930 have to build them at load-time. */
|
|
|
2931 Lisp_Object stuff;
|
|
|
2932 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
2933 struct gcpro gcpro1;
|
|
|
2934 int len;
|
|
|
2935 int iii;
|
|
|
2936 int saw_a_doc_ref = 0;
|
|
|
2937
|
|
|
2938 /* Note: we tell read_list not to search for doc references
|
|
|
2939 because we need to handle the "doc reference" for the
|
|
|
2940 instructions and constants differently. */
|
|
|
2941 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
2942 len = XINT (Flength (stuff));
|
|
|
2943 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
2944 return
|
|
442
|
2945 continuable_read_syntax_error ("#[...] used with wrong number of elements");
|
|
428
|
2946
|
|
|
2947 for (iii = 0; CONSP (stuff); iii++)
|
|
|
2948 {
|
|
853
|
2949 Lisp_Object victim = stuff;
|
|
428
|
2950 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
2951 if ((purify_flag || load_force_doc_strings)
|
|
|
2952 && CONSP (make_byte_code_args[iii])
|
|
|
2953 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
2954 {
|
|
|
2955 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
2956 {
|
|
|
2957 /* same as in read_list(). */
|
|
|
2958 if (NILP (Vinternal_doc_file_name))
|
|
|
2959 make_byte_code_args[iii] = Qzero;
|
|
|
2960 else
|
|
|
2961 XCAR (make_byte_code_args[iii]) =
|
|
|
2962 concat2 (build_string ("../lisp/"),
|
|
|
2963 Ffile_name_nondirectory
|
|
|
2964 (Vload_file_name_internal));
|
|
|
2965 }
|
|
|
2966 else
|
|
|
2967 saw_a_doc_ref = 1;
|
|
|
2968 }
|
|
|
2969 stuff = Fcdr (stuff);
|
|
|
2970 free_cons (victim);
|
|
|
2971 }
|
|
|
2972 GCPRO1 (make_byte_code_args[0]);
|
|
|
2973 gcpro1.nvars = len;
|
|
|
2974
|
|
|
2975 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
2976 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2]))
|
|
|
2977 ebolify_bytecode_constants (make_byte_code_args[2]);
|
|
|
2978
|
|
|
2979 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
2980 * value as our "read-pure" argument */
|
|
|
2981 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
|
2982 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20);
|
|
|
2983 if (saw_a_doc_ref)
|
|
|
2984 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
2985 UNGCPRO;
|
|
|
2986 return stuff;
|
|
|
2987 }
|
|
|
2988
|
|
|
2989
|
|
|
2990
|
|
|
2991 void
|
|
|
2992 init_lread (void)
|
|
|
2993 {
|
|
|
2994 Vvalues = Qnil;
|
|
|
2995
|
|
|
2996 load_in_progress = 0;
|
|
|
2997
|
|
|
2998 Vload_descriptor_list = Qnil;
|
|
|
2999
|
|
|
3000 /* kludge: locate-file does not work for a null load-path, even if
|
|
|
3001 the file name is absolute. */
|
|
|
3002
|
|
|
3003 Vload_path = Fcons (build_string (""), Qnil);
|
|
|
3004
|
|
|
3005 /* This used to get initialized in init_lread because all streams
|
|
|
3006 got closed when dumping occurs. This is no longer true --
|
|
|
3007 Vread_buffer_stream is a resizing output stream, and there is no
|
|
|
3008 reason to close it at dump-time.
|
|
|
3009
|
|
|
3010 Vread_buffer_stream is set to Qnil in vars_of_lread, and this
|
|
|
3011 will initialize it only once, at dump-time. */
|
|
|
3012 if (NILP (Vread_buffer_stream))
|
|
|
3013 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
|
3014
|
|
|
3015 Vload_force_doc_string_list = Qnil;
|
|
|
3016 }
|
|
|
3017
|
|
|
3018 void
|
|
|
3019 syms_of_lread (void)
|
|
|
3020 {
|
|
|
3021 DEFSUBR (Fread);
|
|
|
3022 DEFSUBR (Fread_from_string);
|
|
|
3023 DEFSUBR (Fload_internal);
|
|
|
3024 DEFSUBR (Flocate_file);
|
|
|
3025 DEFSUBR (Flocate_file_clear_hashing);
|
|
|
3026 DEFSUBR (Feval_buffer);
|
|
|
3027 DEFSUBR (Feval_region);
|
|
|
3028
|
|
563
|
3029 DEFSYMBOL (Qstandard_input);
|
|
|
3030 DEFSYMBOL (Qread_char);
|
|
|
3031 DEFSYMBOL (Qcurrent_load_list);
|
|
|
3032 DEFSYMBOL (Qload);
|
|
|
3033 DEFSYMBOL (Qload_file_name);
|
|
|
3034 DEFSYMBOL (Qfset);
|
|
428
|
3035
|
|
|
3036 #ifdef LISP_BACKQUOTES
|
|
563
|
3037 DEFSYMBOL (Qbackquote);
|
|
428
|
3038 defsymbol (&Qbacktick, "`");
|
|
|
3039 defsymbol (&Qcomma, ",");
|
|
|
3040 defsymbol (&Qcomma_at, ",@");
|
|
|
3041 defsymbol (&Qcomma_dot, ",.");
|
|
|
3042 #endif
|
|
|
3043
|
|
563
|
3044 DEFSYMBOL (Qexists);
|
|
|
3045 DEFSYMBOL (Qreadable);
|
|
|
3046 DEFSYMBOL (Qwritable);
|
|
|
3047 DEFSYMBOL (Qexecutable);
|
|
428
|
3048 }
|
|
|
3049
|
|
|
3050 void
|
|
|
3051 structure_type_create (void)
|
|
|
3052 {
|
|
|
3053 the_structure_type_dynarr = Dynarr_new (structure_type);
|
|
|
3054 }
|
|
|
3055
|
|
|
3056 void
|
|
|
3057 reinit_vars_of_lread (void)
|
|
|
3058 {
|
|
|
3059 Vread_buffer_stream = Qnil;
|
|
|
3060 staticpro_nodump (&Vread_buffer_stream);
|
|
|
3061 }
|
|
|
3062
|
|
|
3063 void
|
|
|
3064 vars_of_lread (void)
|
|
|
3065 {
|
|
|
3066 reinit_vars_of_lread ();
|
|
|
3067
|
|
|
3068 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
3069 List of values of all expressions which were read, evaluated and printed.
|
|
|
3070 Order is reverse chronological.
|
|
|
3071 */ );
|
|
|
3072
|
|
|
3073 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
3074 Stream for read to get input from.
|
|
|
3075 See documentation of `read' for possible values.
|
|
|
3076 */ );
|
|
|
3077 Vstandard_input = Qt;
|
|
|
3078
|
|
|
3079 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
3080 *List of directories to search for files to load.
|
|
|
3081 Each element is a string (directory name) or nil (try default directory).
|
|
|
3082
|
|
|
3083 Note that the elements of this list *may not* begin with "~", so you must
|
|
|
3084 call `expand-file-name' on them before adding them to this list.
|
|
|
3085
|
|
|
3086 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
3087 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
3088 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
3089 value for this variable by looking around in the file-system near the
|
|
|
3090 directory in which the XEmacs executable resides.
|
|
|
3091 */ );
|
|
|
3092 Vload_path = Qnil;
|
|
|
3093
|
|
|
3094 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
3095 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
3096
|
|
|
3097 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
3098 Non-nil iff inside of `load'.
|
|
|
3099 */ );
|
|
|
3100
|
|
|
3101 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
3102 An alist of expressions to be evalled when particular files are loaded.
|
|
|
3103 Each element looks like (FILENAME FORMS...).
|
|
|
3104 When `load' is run and the file-name argument is FILENAME,
|
|
|
3105 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
3106
|
|
|
3107 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
3108 with no directory specified, since that is how `load' is normally called.
|
|
|
3109 An error in FORMS does not undo the load,
|
|
|
3110 but does prevent execution of the rest of the FORMS.
|
|
|
3111 */ );
|
|
|
3112 Vafter_load_alist = Qnil;
|
|
|
3113
|
|
|
3114 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
3115 *Whether `load' should check whether the source is newer than the binary.
|
|
|
3116 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
3117 corresponding `.el' is newer, a warning message will be printed.
|
|
|
3118 */ );
|
|
|
3119 load_warn_when_source_newer = 0;
|
|
|
3120
|
|
|
3121 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
3122 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
3123 If this variable is true, then when `load' is called with a filename without
|
|
|
3124 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
3125 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
3126 no warning will be printed.
|
|
|
3127 */ );
|
|
|
3128 load_warn_when_source_only = 0;
|
|
|
3129
|
|
|
3130 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
3131 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
3132 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
3133 */ );
|
|
|
3134 load_ignore_elc_files = 0;
|
|
|
3135
|
|
1123
|
3136 DEFVAR_BOOL ("load-ignore-out-of-date-elc-files",
|
|
|
3137 &load_ignore_out_of_date_elc_files /*
|
|
|
3138 *Whether `load' should ignore out-of-date `.elc' files when no suffix is given.
|
|
|
3139 This is normally used when compiling packages of elisp files that may have
|
|
|
3140 complex dependencies. Ignoring all elc files with `load-ignore-elc-files'
|
|
|
3141 would also be safe, but much slower.
|
|
|
3142 */ );
|
|
|
3143 load_ignore_out_of_date_elc_files = 0;
|
|
|
3144
|
|
|
3145 DEFVAR_BOOL ("load-always-display-messages",
|
|
|
3146 &load_always_display_messages /*
|
|
|
3147 *Whether `load' should always display loading messages.
|
|
|
3148 If this is true, every file loaded will be shown, regardless of the setting
|
|
|
3149 of the NOMESSAGE parameter, and even when files are loaded indirectly, e.g.
|
|
|
3150 due to `requre'.
|
|
|
3151 */ );
|
|
|
3152 load_always_display_messages = 0;
|
|
|
3153
|
|
|
3154 DEFVAR_BOOL ("load-show-full-path-in-messages",
|
|
|
3155 &load_show_full_path_in_messages /*
|
|
|
3156 *Whether `load' should show the full path in all loading messages.
|
|
|
3157 */ );
|
|
|
3158 load_show_full_path_in_messages = 0;
|
|
|
3159
|
|
428
|
3160 #ifdef LOADHIST
|
|
|
3161 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
3162 Alist mapping source file names to symbols and features.
|
|
|
3163 Each alist element is a list that starts with a file name,
|
|
|
3164 except for one element (optional) that starts with nil and describes
|
|
|
3165 definitions evaluated from buffers not visiting files.
|
|
|
3166 The remaining elements of each list are symbols defined as functions
|
|
|
3167 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
3168 */ );
|
|
|
3169 Vload_history = Qnil;
|
|
|
3170
|
|
|
3171 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
3172 Used for internal purposes by `load'.
|
|
|
3173 */ );
|
|
|
3174 Vcurrent_load_list = Qnil;
|
|
|
3175 #endif
|
|
|
3176
|
|
|
3177 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
3178 Full name of file being loaded by `load'.
|
|
|
3179 */ );
|
|
|
3180 Vload_file_name = Qnil;
|
|
|
3181
|
|
|
3182 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
3183 Function used by `load' and `eval-region' for reading expressions.
|
|
|
3184 The default is nil, which means use the function `read'.
|
|
|
3185 */ );
|
|
|
3186 Vload_read_function = Qnil;
|
|
|
3187
|
|
|
3188 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
3189 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
3190 This is useful when the file being loaded is a temporary copy.
|
|
|
3191 */ );
|
|
|
3192 load_force_doc_strings = 0;
|
|
|
3193
|
|
|
3194 /* See read_escape(). */
|
|
|
3195 #if 0
|
|
|
3196 /* Used to be named `puke-on-fsf-keys' */
|
|
|
3197 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes",
|
|
|
3198 &fail_on_bucky_bit_character_escapes /*
|
|
|
3199 Whether `read' should signal an error when it encounters unsupported
|
|
|
3200 character escape syntaxes or just read them incorrectly.
|
|
|
3201 */ );
|
|
|
3202 fail_on_bucky_bit_character_escapes = 0;
|
|
|
3203 #endif
|
|
|
3204
|
|
|
3205 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3206 with values saved when the image is dumped. */
|
|
|
3207 staticpro (&Vload_descriptor_list);
|
|
|
3208
|
|
|
3209 /* Initialized in init_lread. */
|
|
|
3210 staticpro (&Vload_force_doc_string_list);
|
|
|
3211
|
|
|
3212 Vload_file_name_internal = Qnil;
|
|
|
3213 staticpro (&Vload_file_name_internal);
|
|
|
3214
|
|
|
3215 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3216 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3217
|
|
|
3218 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3219 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3220 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3221 #endif
|
|
|
3222
|
|
|
3223 /* So that early-early stuff will work */
|
|
|
3224 Ffset (Qload, intern ("load-internal"));
|
|
|
3225
|
|
|
3226 #ifdef FEATUREP_SYNTAX
|
|
563
|
3227 DEFSYMBOL (Qfeaturep);
|
|
771
|
3228 Fprovide (intern ("xemacs"));
|
|
428
|
3229 #ifdef INFODOCK
|
|
771
|
3230 Fprovide (intern ("infodock"));
|
|
428
|
3231 #endif /* INFODOCK */
|
|
|
3232 #endif /* FEATUREP_SYNTAX */
|
|
|
3233
|
|
|
3234 #ifdef LISP_BACKQUOTES
|
|
|
3235 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3236 #endif
|
|
|
3237
|
|
|
3238 #ifdef I18N3
|
|
|
3239 Vfile_domain = Qnil;
|
|
|
3240 #endif
|
|
|
3241
|
|
|
3242 Vread_objects = Qnil;
|
|
|
3243 staticpro (&Vread_objects);
|
|
|
3244
|
|
|
3245 Vlocate_file_hash_table = make_lisp_hash_table (200,
|
|
|
3246 HASH_TABLE_NON_WEAK,
|
|
|
3247 HASH_TABLE_EQUAL);
|
|
|
3248 staticpro (&Vlocate_file_hash_table);
|
|
|
3249 #ifdef DEBUG_XEMACS
|
|
|
3250 symbol_value (XSYMBOL (intern ("Vlocate-file-hash-table")))
|
|
|
3251 = Vlocate_file_hash_table;
|
|
|
3252 #endif
|
|
|
3253 }
|
