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0
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1 /* Lisp parsing and input streams.
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2 Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems.
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4 Copyright (C) 1996 Ben Wing.
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Mule 2.0, FSF 19.30. */
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24
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25 /* This file has been Mule-ized. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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30 #ifndef standalone
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31 #include "buffer.h"
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32 #include "bytecode.h"
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33 #include "commands.h"
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34 #include "insdel.h"
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35 #include "lstream.h"
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36 #include "opaque.h"
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37 #include "paths.h"
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38 #endif
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39
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40 #include "sysfile.h"
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41
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42 #ifdef LISP_FLOAT_TYPE
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43 #define THIS_FILENAME lread
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44 #include "sysfloat.h"
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45 #endif /* LISP_FLOAT_TYPE */
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46
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47 Lisp_Object Qread_char, Qstandard_input;
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48 Lisp_Object Qvariable_documentation;
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49 #define LISP_BACKQUOTES
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50 #ifdef LISP_BACKQUOTES
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51 /* FSFmacs says:
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52
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53 Nonzero means inside a new-style backquote
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54 with no surrounding parentheses.
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55 Fread initializes this to zero, so we need not specbind it
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56 or worry about what happens to it when there is an error.
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57
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58 But this is fucking typical Stallman bogosity. Nested
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59 backquotes are perfectly legal and fail utterly with
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60 this silliness. */
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61 static int new_backquote_flag, old_backquote_flag;
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62 Lisp_Object Qbackquote, Qbacktick, Qcomma, Qcomma_at, Qcomma_dot;
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63 #endif
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64 Lisp_Object Qvariable_domain; /* I18N3 */
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65 Lisp_Object Vvalues, Vstandard_input, Vafter_load_alist;
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66 Lisp_Object Qcurrent_load_list;
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67 Lisp_Object Qload, Qload_file_name;
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68 Lisp_Object Qlocate_file_hash_table;
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69 Lisp_Object Qfset;
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70
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71 int puke_on_fsf_keys;
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72
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73 /* non-zero if inside `load' */
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74 int load_in_progress;
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75
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76 /* Whether Fload_internal() should check whether the .el is newer
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77 when loading .elc */
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78 int load_warn_when_source_newer;
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79 /* Whether Fload_internal() should check whether the .elc doesn't exist */
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80 int load_warn_when_source_only;
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81 /* Whether Fload_internal() should ignore .elc files when no suffix is given */
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82 int load_ignore_elc_files;
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83
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84 /* Directory in which the sources were found. */
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85 Lisp_Object Vsource_directory;
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86
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87 /* Search path for files to be loaded. */
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88 Lisp_Object Vload_path;
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89
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90 /* Search path for files when dumping. */
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91 /* Lisp_Object Vdump_load_path; */
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92
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93 /* This is the user-visible association list that maps features to
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94 lists of defs in their load files. */
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95 Lisp_Object Vload_history;
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96
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97 /* This is used to build the load history. */
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98 Lisp_Object Vcurrent_load_list;
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99
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100 /* Name of file actually being read by `load'. */
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101 Lisp_Object Vload_file_name;
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102
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103 /* Same as Vload_file_name but not Lisp-accessible. This ensures that
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104 our #$ checks are reliable. */
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105 Lisp_Object Vload_file_name_internal;
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106
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107 Lisp_Object Vload_file_name_internal_the_purecopy;
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108
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109 /* Function to use for reading, in `load' and friends. */
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110 Lisp_Object Vload_read_function;
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111
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112 /* Nonzero means load should forcibly load all dynamic doc strings. */
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113 /* Note that this always happens (with some special behavior) when
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114 purify_flag is set. */
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115 static int load_force_doc_strings;
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116
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117 /* List of descriptors now open for Fload_internal. */
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118 static Lisp_Object Vload_descriptor_list;
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119
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120 /* In order to implement "load_force_doc_strings", we keep
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121 a list of all the compiled-function objects and such
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122 that we have created in the process of loading this file.
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123 See the rant below.
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124
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125 We specbind this just like Vload_file_name, so there's no
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126 problems with recursive loading. */
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127 static Lisp_Object Vload_force_doc_string_list;
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128
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129 /* A resizing-buffer stream used to temporarily hold data while reading */
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130 static Lisp_Object Vread_buffer_stream;
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131
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132 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
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133 Lisp_Object Vcurrent_compiled_function_annotation;
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134 #endif
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135
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16
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136 static int load_byte_code_version;
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137
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0
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138 /* An array describing all known built-in structure types */
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139 static Structure_type_dynarr *the_structure_type_dynarr;
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140
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141 #if 0 /* FSFmacs defun hack */
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142 /* When nonzero, read conses in pure space */
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143 static int read_pure;
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144 #endif
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145
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146 #if 0 /* FSFmacs bogosity */
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147 /* For use within read-from-string (this reader is non-reentrant!!) */
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148 static int read_from_string_index;
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149 static int read_from_string_limit;
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150 #endif
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151
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152 #if 0 /* More FSF implementation kludges. */
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153 /* In order to implement load-force-doc-string, FSF saves the
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154 #@-quoted string when it's seen, and goes back and retrieves
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155 it later.
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156
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157 This approach is not only kludgy, but it in general won't work
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158 correctly because there's no stack of remembered #@-quoted-strings
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159 and those strings don't generally appear in the file in the same
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160 order as their #$ references. (Yes, that is amazingly stupid too.
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161 WHY IN THE FUCKING HELL CAN'T RMS EVER IMPLEMENT ANYTHING IN A SANE
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162 WAY? It would be trivially easy to always encode the #@ string
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163 [which is a comment, anyway] in the middle of the (#$ . INT) cons
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164 reference. That way, it would be really easy to implement
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165 load-force-doc-string in a non-kludgy way by just retrieving the
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166 string immediately, because it's delivered on a silver platter.)
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167
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168 And finally, this stupid approach doesn't work under Mule, or
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169 under MS-DOS or Windows NT, or under VMS, or any other place
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170 where you either can't do an ftell() or don't get back a byte
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171 count.
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172
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173 Oh, and one more lossage in this approach: If you attempt to
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174 dump any ELC files that were compiled with `byte-compile-dynamic'
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175 (as opposed to just `byte-compile-dynamic-docstring'), you
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176 get hosed. FMH! (as the illustrious JWZ was prone to utter)
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177
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178 The approach we use is clean, solves all of these problems, and is
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179 probably easier to implement anyway. We just save a list of all
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180 the containing objects that have (#$ . INT) conses in them (this
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181 will only be compiled-function objects and lists), and when the
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182 file is finished loading, we go through and fill in all the
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183 doc strings at once. */
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184
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185 /* This contains the last string skipped with #@. */
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186 static char *saved_doc_string;
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187 /* Length of buffer allocated in saved_doc_string. */
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188 static int saved_doc_string_size;
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189 /* Length of actual data in saved_doc_string. */
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190 static int saved_doc_string_length;
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191 /* This is the file position that string came from. */
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192 static int saved_doc_string_position;
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193 #endif
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194
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195
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196
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197 static DOESNT_RETURN
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198 syntax_error (CONST char *string)
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199 {
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200 signal_error (Qinvalid_read_syntax,
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201 list1 (build_translated_string (string)));
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202 }
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203
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204 static Lisp_Object
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205 continuable_syntax_error (CONST char *string)
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206 {
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207 return Fsignal (Qinvalid_read_syntax,
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208 list1 (build_translated_string (string)));
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209 }
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210
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211
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212 /* Handle unreading and rereading of characters. */
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213 static Emchar
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214 readchar (Lisp_Object readcharfun)
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215 {
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216 /* This function can GC */
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217
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218 if (BUFFERP (readcharfun))
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219 {
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220 Emchar c;
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221 struct buffer *b = XBUFFER (readcharfun);
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222
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223 if (!BUFFER_LIVE_P (b))
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224 error ("Reading from killed buffer");
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225
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226 if (BUF_PT (b) >= BUF_ZV (b))
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227 return -1;
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228 c = BUF_FETCH_CHAR (b, BUF_PT (b));
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229 BUF_SET_PT (b, BUF_PT (b) + 1);
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230
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231 return c;
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232 }
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233 else if (LSTREAMP (readcharfun))
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234 {
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16
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235 Emchar c = Lstream_get_emchar (XLSTREAM (readcharfun));
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236 #ifdef DEBUG_XEMACS /* testing Mule */
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237 static int testing_mule = 0; /* Change via debugger */
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238 if (testing_mule) {
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239 if (c >= 0x20 && c <= 0x7E) fprintf (stderr, "%c", c);
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240 else if (c == '\n') fprintf (stderr, "\\n\n");
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241 else fprintf (stderr, "\\%o ", c);
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242 }
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243 #endif
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244 return c;
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0
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245 }
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246 else if (MARKERP (readcharfun))
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247 {
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248 Emchar c;
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249 Bufpos mpos = marker_position (readcharfun);
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250 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
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251
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252 if (mpos >= BUF_ZV (inbuffer))
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253 return -1;
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254 c = BUF_FETCH_CHAR (inbuffer, mpos);
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255 set_marker_position (readcharfun, mpos + 1);
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256 return c;
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257 }
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258 else
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259 {
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260 Lisp_Object tem = call0 (readcharfun);
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261
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262 if (!CHAR_OR_CHAR_INTP (tem))
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263 return -1;
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264 return XCHAR_OR_CHAR_INT (tem);
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265 }
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266 }
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267
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268 /* Unread the character C in the way appropriate for the stream READCHARFUN.
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269 If the stream is a user function, call it with the char as argument. */
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270
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271 static void
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272 unreadchar (Lisp_Object readcharfun, Emchar c)
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273 {
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274 if (c == -1)
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275 /* Don't back up the pointer if we're unreading the end-of-input mark,
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276 since readchar didn't advance it when we read it. */
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277 ;
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278 else if (BUFFERP (readcharfun))
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279 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
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280 else if (LSTREAMP (readcharfun))
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281 {
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282 Lstream_unget_emchar (XLSTREAM (readcharfun), c);
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16
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283 #ifdef DEBUG_XEMACS /* testing Mule */
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284 {
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285 static int testing_mule = 0; /* Set this using debugger */
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286 if (testing_mule)
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287 fprintf (stderr,
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288 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
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289 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
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290 }
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291 #endif
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0
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292 }
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293 else if (MARKERP (readcharfun))
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294 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
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295 else
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296 call1 (readcharfun, make_char (c));
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297 }
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298
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299 static Lisp_Object read0 (Lisp_Object readcharfun);
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300 static Lisp_Object read1 (Lisp_Object readcharfun);
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301 /* allow_dotted_lists means that something like (foo bar . baz)
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302 is acceptable. If -1, means check for starting with defun
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303 and make structure pure. (not implemented, probably for very
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304 good reasons)
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305 */
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306 /*
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307 If check_for_doc_references, look for (#$ . INT) doc references
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308 in the list and record if load_force_doc_strings is non-zero.
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309 (Such doc references will be destroyed during the loadup phase
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310 by replacing with Qzero, because Snarf-documentation will fill
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311 them in again.)
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312
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313 WARNING: If you set this, you sure as hell better not call
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314 free_list() on the returned list here. */
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315
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316 static Lisp_Object read_list (Lisp_Object readcharfun,
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317 Emchar terminator,
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318 int allow_dotted_lists,
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319 int check_for_doc_references);
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320
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321 /* get a character from the tty */
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322
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323 #ifdef standalone /* This primitive is normally not defined */
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324
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325 #define kludge DEFUN /* to keep this away from make-docfile... */
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326 kludge ("read-char", Fread_char, Sread_char, 0, 0, 0, "") ()
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327 {
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328 return getchar ();
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329 }
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330 #undef kludge
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331 #endif /* standalone */
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332
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333
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334
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335 static void readevalloop (Lisp_Object readcharfun,
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336 Lisp_Object sourcefile,
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337 Lisp_Object (*evalfun) (Lisp_Object),
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338 int printflag);
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339
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340 static Lisp_Object
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341 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
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342 {
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343 Lstream_close (XLSTREAM (stream));
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344 if (--load_in_progress < 0)
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345 load_in_progress = 0;
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346 return Qnil;
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347 }
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348
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349 static Lisp_Object
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350 load_descriptor_unwind (Lisp_Object oldlist)
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351 {
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352 Vload_descriptor_list = oldlist;
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353 return Qnil;
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354 }
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355
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356 static Lisp_Object
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357 load_file_name_internal_unwind (Lisp_Object oldval)
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358 {
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359 Vload_file_name_internal = oldval;
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360 return Qnil;
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361 }
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362
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363 static Lisp_Object
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364 load_file_name_internal_the_purecopy_unwind (Lisp_Object oldval)
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365 {
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366 Vload_file_name_internal_the_purecopy = oldval;
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367 return Qnil;
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368 }
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369
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370 static Lisp_Object
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371 pas_de_lache_ici (int fd, Lisp_Object victim)
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372 {
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373 Lisp_Object tem;
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374 EMACS_INT pos;
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375
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376 if (!INTP (XCDR (victim)))
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377 signal_simple_error ("Bogus doc string reference", victim);
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378 pos = XINT (XCDR (victim));
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379 if (pos < 0)
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380 pos = -pos; /* kludge to mark a user variable */
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381 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal);
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382 if (!STRINGP (tem))
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383 signal_error (Qerror, tem);
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384 return tem;
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385 }
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386
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387 static Lisp_Object
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388 load_force_doc_string_unwind (Lisp_Object oldlist)
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389 {
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390 struct gcpro gcpro1;
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391 Lisp_Object list = Vload_force_doc_string_list;
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392 Lisp_Object tail;
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393 int fd = XINT (XCAR (Vload_descriptor_list));
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394 /* NOTE: If purify_flag is true, we're in-place modifying objects that
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395 may be in purespace (and if not, they will be). Therefore, we have
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396 to be VERY careful to make sure that all objects that we create
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397 are purecopied -- objects in purespace are not marked for GC, and
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398 if we leave any impure objects inside of pure ones, we're really
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399 screwed. */
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400
|
|
|
401 GCPRO1 (list);
|
|
|
402 /* restore the old value first just in case an error occurs. */
|
|
|
403 Vload_force_doc_string_list = oldlist;
|
|
|
404
|
|
|
405 LIST_LOOP (tail, list)
|
|
|
406 {
|
|
|
407 Lisp_Object john = Fcar (tail);
|
|
|
408 if (CONSP (john))
|
|
|
409 {
|
|
|
410 assert (CONSP (XCAR (john)));
|
|
|
411 assert (!purify_flag); /* should have been handled in read_list() */
|
|
|
412 XCAR (john) = pas_de_lache_ici (fd, XCAR (john));
|
|
|
413 }
|
|
|
414 else
|
|
|
415 {
|
|
|
416 Lisp_Object doc;
|
|
|
417
|
|
|
418 assert (COMPILED_FUNCTIONP (john));
|
|
|
419 if (CONSP (XCOMPILED_FUNCTION (john)->bytecodes))
|
|
|
420 {
|
|
|
421 struct gcpro ngcpro1;
|
|
|
422 Lisp_Object juan = (pas_de_lache_ici
|
|
|
423 (fd, XCOMPILED_FUNCTION (john)->bytecodes));
|
|
|
424 Lisp_Object ivan;
|
|
|
425
|
|
|
426 NGCPRO1 (juan);
|
|
|
427 ivan = Fread (juan);
|
|
|
428 if (!CONSP (ivan))
|
|
|
429 signal_simple_error ("invalid lazy-loaded byte code", ivan);
|
|
|
430 /* Remember to purecopy; see above. */
|
|
|
431 XCOMPILED_FUNCTION (john)->bytecodes = Fpurecopy (XCAR (ivan));
|
|
|
432 XCOMPILED_FUNCTION (john)->constants = Fpurecopy (XCDR (ivan));
|
|
|
433 NUNGCPRO;
|
|
|
434 }
|
|
|
435 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
436 if (CONSP (doc))
|
|
|
437 {
|
|
|
438 assert (!purify_flag); /* should have been handled in
|
|
|
439 read_compiled_function() */
|
|
|
440 doc = pas_de_lache_ici (fd, doc);
|
|
|
441 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
442 doc);
|
|
|
443 }
|
|
|
444 }
|
|
|
445 }
|
|
|
446
|
|
|
447 if (!NILP (list))
|
|
|
448 free_list (list);
|
|
|
449
|
|
|
450 UNGCPRO;
|
|
|
451 return Qnil;
|
|
|
452 }
|
|
|
453
|
|
|
454 /* Close all descriptors in use for Fload_internal.
|
|
|
455 This is used when starting a subprocess. */
|
|
|
456
|
|
|
457 void
|
|
|
458 close_load_descs (void)
|
|
|
459 {
|
|
|
460 Lisp_Object tail;
|
|
|
461 LIST_LOOP (tail, Vload_descriptor_list)
|
|
|
462 close (XINT (XCAR (tail)));
|
|
|
463 }
|
|
|
464
|
|
|
465 #ifdef I18N3
|
|
|
466 Lisp_Object Vfile_domain;
|
|
|
467
|
|
|
468 Lisp_Object
|
|
|
469 restore_file_domain (Lisp_Object val)
|
|
|
470 {
|
|
|
471 Vfile_domain = val;
|
|
|
472 return Qnil;
|
|
|
473 }
|
|
|
474 #endif /* I18N3 */
|
|
|
475
|
|
|
476 DEFUN ("load-internal", Fload_internal, Sload_internal, 1, 4, 0 /*
|
|
|
477 Execute a file of Lisp code named FILE.
|
|
|
478 First try FILE with `.elc' appended, then try with `.el',
|
|
|
479 then try FILE unmodified.
|
|
|
480 This function searches the directories in `load-path'.
|
|
|
481 If optional second arg NOERROR is non-nil,
|
|
|
482 report no error if FILE doesn't exist.
|
|
|
483 Print messages at start and end of loading unless
|
|
|
484 optional third arg NOMESSAGE is non-nil (ignored in -batch mode).
|
|
|
485 If optional fourth arg NOSUFFIX is non-nil, don't try adding
|
|
|
486 suffixes `.elc' or `.el' to the specified name FILE.
|
|
|
487 Return t if file exists.
|
|
|
488 */ )
|
|
|
489 (file, no_error, nomessage, nosuffix)
|
|
|
490 Lisp_Object file, no_error, nomessage, nosuffix;
|
|
|
491 {
|
|
|
492 /* This function can GC */
|
|
|
493 int fd = -1;
|
|
|
494 int speccount = specpdl_depth ();
|
|
|
495 int source_only = 0;
|
|
|
496 Lisp_Object newer = Qnil;
|
|
|
497 Lisp_Object handler = Qnil;
|
|
|
498 Lisp_Object found = Qnil;
|
|
|
499 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
16
|
500 int reading_elc = 0;
|
|
|
501 int message_p = NILP (nomessage);
|
|
0
|
502 #ifdef DEBUG_XEMACS
|
|
16
|
503 static Lisp_Object last_file_loaded;
|
|
0
|
504 int pure_usage = 0;
|
|
|
505 #endif
|
|
|
506 #ifdef DOS_NT
|
|
|
507 int dosmode = O_TEXT;
|
|
|
508 #endif /* DOS_NT */
|
|
|
509 GCPRO3 (file, newer, found);
|
|
|
510
|
|
|
511 CHECK_STRING (file);
|
|
|
512
|
|
|
513 #ifdef DEBUG_XEMACS
|
|
|
514 if (purify_flag && noninteractive)
|
|
16
|
515 {
|
|
|
516 message_p = 1;
|
|
|
517 last_file_loaded = file;
|
|
|
518 pure_usage = purespace_usage ();
|
|
|
519 }
|
|
|
520 #endif /* DEBUG_XEMACS */
|
|
0
|
521
|
|
|
522 /* If file name is magic, call the handler. */
|
|
|
523 handler = Ffind_file_name_handler (file, Qload);
|
|
|
524 if (!NILP (handler))
|
|
16
|
525 RETURN_UNGCPRO (call5 (handler, Qload, file, no_error,
|
|
|
526 nomessage, nosuffix));
|
|
0
|
527
|
|
|
528 /* Do this after the handler to avoid
|
|
|
529 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
530 (Below here, we care only whether they are nil or not.) */
|
|
|
531 file = Fsubstitute_in_file_name (file);
|
|
|
532
|
|
16
|
533
|
|
0
|
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. */
|
|
16
|
537 if (XSTRING_LENGTH (file) > 0)
|
|
0
|
538 {
|
|
|
539 char *foundstr;
|
|
|
540 int foundlen;
|
|
|
541
|
|
|
542 fd = locate_file (Vload_path, file,
|
|
|
543 ((!NILP (nosuffix)) ? "" :
|
|
|
544 load_ignore_elc_files ? ".el:" :
|
|
|
545 ".elc:.el:"),
|
|
|
546 &found,
|
|
|
547 -1);
|
|
|
548
|
|
|
549 if (fd < 0)
|
|
|
550 {
|
|
|
551 if (NILP (no_error))
|
|
|
552 signal_file_error ("Cannot open load file", file);
|
|
|
553 else
|
|
|
554 {
|
|
|
555 UNGCPRO;
|
|
|
556 return Qnil;
|
|
|
557 }
|
|
|
558 }
|
|
|
559
|
|
16
|
560 foundstr = (char *) alloca (XSTRING_LENGTH (found) + 1);
|
|
|
561 strcpy (foundstr, (char *) XSTRING_DATA (found));
|
|
0
|
562 foundlen = strlen (foundstr);
|
|
|
563
|
|
|
564 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
565 differ. --ben */
|
|
|
566 if (load_ignore_elc_files)
|
|
|
567 {
|
|
|
568 newer = Ffile_name_nondirectory (found);
|
|
|
569 }
|
|
|
570 else if (load_warn_when_source_newer &&
|
|
|
571 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
572 {
|
|
|
573 struct stat s1, s2;
|
|
|
574 if (! fstat (fd, &s1)) /* can't fail, right? */
|
|
|
575 {
|
|
|
576 int result;
|
|
|
577 /* temporarily hack the 'c' off the end of the filename */
|
|
|
578 foundstr[foundlen - 1] = '\0';
|
|
|
579 result = stat (foundstr, &s2);
|
|
|
580 if (result >= 0 &&
|
|
|
581 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
|
582 {
|
|
|
583 Lisp_Object newer_name = make_string ((Bufbyte *) foundstr,
|
|
|
584 foundlen - 1);
|
|
|
585 struct gcpro nngcpro1;
|
|
|
586 NNGCPRO1 (newer_name);
|
|
|
587 newer = Ffile_name_nondirectory (newer_name);
|
|
|
588 NNUNGCPRO;
|
|
|
589 }
|
|
|
590 /* put the 'c' back on (kludge-o-rama) */
|
|
|
591 foundstr[foundlen - 1] = 'c';
|
|
|
592 }
|
|
|
593 }
|
|
|
594 else if (load_warn_when_source_only &&
|
|
|
595 /* `found' ends in ".el" */
|
|
|
596 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
597 /* `file' does not end in ".el" */
|
|
|
598 memcmp (".el",
|
|
16
|
599 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
0
|
600 3))
|
|
|
601 {
|
|
|
602 source_only = 1;
|
|
|
603 }
|
|
16
|
604
|
|
|
605 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
606 reading_elc = 1;
|
|
0
|
607 }
|
|
|
608
|
|
|
609 #ifdef DOS_NT
|
|
|
610 /* The file was opened as binary, because that's what we'll
|
|
|
611 encounter most of the time. If we're loading a .el, we need
|
|
|
612 to reopen it in text mode. */
|
|
16
|
613 if (!reading_elc)
|
|
0
|
614 fd = open (foundstr, O_RDONLY | O_TEXT);
|
|
16
|
615 #endif /* DOS_NT */
|
|
|
616
|
|
|
617 #define PRINT_LOADING_MESSAGE(done) do { \
|
|
|
618 if (load_ignore_elc_files) \
|
|
|
619 { \
|
|
|
620 if (message_p) \
|
|
|
621 message ("Loading %s..." done, XSTRING_DATA (newer)); \
|
|
|
622 } \
|
|
|
623 else if (!NILP (newer)) \
|
|
|
624 message ("Loading %s..." done " (file %s is newer)", \
|
|
|
625 XSTRING_DATA (file), \
|
|
|
626 XSTRING_DATA (newer)); \
|
|
|
627 else if (source_only) \
|
|
|
628 message ("Loading %s..." done " (file %s.elc does not exist)", \
|
|
|
629 XSTRING_DATA (file), \
|
|
|
630 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
631 else if (message_p) \
|
|
|
632 message ("Loading %s..." done, XSTRING_DATA (file)); \
|
|
|
633 } while (0)
|
|
|
634
|
|
|
635 PRINT_LOADING_MESSAGE ("");
|
|
0
|
636
|
|
|
637 {
|
|
|
638 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
639 Lisp_Object lispstream = Qnil;
|
|
|
640 CONST int block_size = 8192;
|
|
|
641 struct gcpro ngcpro1;
|
|
|
642
|
|
|
643 NGCPRO1 (lispstream);
|
|
|
644 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
645 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
646 files aren't really all that big. */
|
|
|
647 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
648 block_size);
|
|
|
649
|
|
|
650 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
|
651 record_unwind_protect (load_unwind, lispstream);
|
|
|
652 record_unwind_protect (load_descriptor_unwind, Vload_descriptor_list);
|
|
|
653 record_unwind_protect (load_file_name_internal_unwind,
|
|
|
654 Vload_file_name_internal);
|
|
|
655 record_unwind_protect (load_file_name_internal_the_purecopy_unwind,
|
|
|
656 Vload_file_name_internal_the_purecopy);
|
|
|
657 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
658 Vload_force_doc_string_list);
|
|
|
659 Vload_file_name_internal = found;
|
|
|
660 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
661 specbind (Qload_file_name, found);
|
|
16
|
662 Vload_descriptor_list = Fcons (make_int (fd), Vload_descriptor_list);
|
|
0
|
663 Vload_force_doc_string_list = Qnil;
|
|
|
664 #ifdef I18N3
|
|
|
665 record_unwind_protect (restore_file_domain, Vfile_domain);
|
|
|
666 Vfile_domain = Qnil; /* set it to nil; a call to #'domain will set it. */
|
|
|
667 #endif
|
|
|
668 load_in_progress++;
|
|
|
669 readevalloop (lispstream, file, Feval, 0);
|
|
|
670 unbind_to (speccount, Qnil);
|
|
|
671
|
|
|
672 NUNGCPRO;
|
|
|
673 }
|
|
|
674
|
|
|
675 {
|
|
|
676 Lisp_Object tem;
|
|
|
677 /* #### Disgusting kludge */
|
|
|
678 /* Run any load-hooks for this file. */
|
|
|
679 tem = Fassoc (file, Vafter_load_alist);
|
|
|
680 if (!NILP (tem))
|
|
|
681 {
|
|
|
682 struct gcpro ngcpro1;
|
|
|
683
|
|
|
684 NGCPRO1 (tem);
|
|
|
685 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
686 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
687 Feval (tem);
|
|
|
688 NUNGCPRO;
|
|
|
689 }
|
|
|
690 }
|
|
|
691
|
|
|
692 #ifdef DEBUG_XEMACS
|
|
16
|
693 if (purify_flag && noninteractive)
|
|
0
|
694 {
|
|
16
|
695 if (EQ (last_file_loaded, file))
|
|
|
696 message_append (" (%d)", purespace_usage() - pure_usage);
|
|
|
697 else
|
|
|
698 message ("Loading %s ...done (%d)", XSTRING_DATA (file),
|
|
|
699 purespace_usage() - pure_usage);
|
|
0
|
700 }
|
|
|
701 #endif
|
|
|
702
|
|
16
|
703 if (!noninteractive)
|
|
|
704 PRINT_LOADING_MESSAGE ("done");
|
|
|
705
|
|
0
|
706 UNGCPRO;
|
|
|
707 return Qt;
|
|
|
708 }
|
|
|
709
|
|
|
710
|
|
|
711 #if 0 /* FSFmacs */
|
|
|
712 /* not used */
|
|
|
713 static int
|
|
|
714 complete_filename_p (Lisp_Object pathname)
|
|
|
715 {
|
|
16
|
716 REGISTER unsigned char *s = XSTRING_DATA (pathname);
|
|
0
|
717 return (IS_DIRECTORY_SEP (s[0])
|
|
16
|
718 || (XSTRING_LENGTH (pathname) > 2
|
|
0
|
719 && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))
|
|
|
720 #ifdef ALTOS
|
|
|
721 || *s == '@'
|
|
|
722 #endif
|
|
|
723 #ifdef VMS
|
|
|
724 || strchr (s, ':')
|
|
|
725 #endif /* VMS */
|
|
|
726 );
|
|
|
727 }
|
|
|
728 #endif /* 0 */
|
|
|
729
|
|
|
730 DEFUN ("locate-file", Flocate_file, Slocate_file, 2, 4, 0 /*
|
|
|
731 Search for FILENAME through PATH-LIST, expanded by one of the optional
|
|
|
732 SUFFIXES (string of suffixes separated by \":\"s), checking for access
|
|
|
733 MODE (0|1|2|4 = exists|executable|writeable|readable), default readable.
|
|
|
734
|
|
|
735 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
736 in order to speed things up. It tries valiantly to not get confused in
|
|
|
737 the face of a changing and unpredictable environment, but can occasionally
|
|
|
738 get tripped up. In this case, you will have to call
|
|
|
739 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
740 for details.
|
|
|
741 */ )
|
|
|
742 (filename, path_list, suffixes, mode)
|
|
|
743 Lisp_Object filename, path_list, suffixes, mode;
|
|
|
744 {
|
|
|
745 /* This function can GC */
|
|
|
746 Lisp_Object tp;
|
|
|
747
|
|
|
748 CHECK_STRING (filename);
|
|
|
749 if (!NILP (suffixes))
|
|
|
750 {
|
|
|
751 CHECK_STRING (suffixes);
|
|
|
752 }
|
|
|
753 if (!(NILP (mode) || (INTP (mode) && XINT (mode) >= 0)))
|
|
|
754 mode = wrong_type_argument (Qnatnump, mode);
|
|
|
755 locate_file (path_list, filename,
|
|
|
756 ((NILP (suffixes)) ? "" :
|
|
16
|
757 (char *) (XSTRING_DATA (suffixes))),
|
|
0
|
758 &tp, (NILP (mode) ? R_OK : XINT (mode)));
|
|
|
759 return tp;
|
|
|
760 }
|
|
|
761
|
|
|
762 /* recalculate the hash table for the given string */
|
|
|
763
|
|
|
764 static Lisp_Object
|
|
|
765 locate_file_refresh_hashing (Lisp_Object str)
|
|
|
766 {
|
|
|
767 Lisp_Object hash =
|
|
16
|
768 make_directory_hash_table ((char *) XSTRING_DATA (str));
|
|
0
|
769 Fput (str, Qlocate_file_hash_table, hash);
|
|
|
770 return hash;
|
|
|
771 }
|
|
|
772
|
|
|
773 /* find the hash table for the given string, recalculating if necessary */
|
|
|
774
|
|
|
775 static Lisp_Object
|
|
|
776 locate_file_find_directory_hash_table (Lisp_Object str)
|
|
|
777 {
|
|
|
778 Lisp_Object hash = Fget (str, Qlocate_file_hash_table, Qnil);
|
|
|
779 if (NILP (Fhashtablep (hash)))
|
|
|
780 return locate_file_refresh_hashing (str);
|
|
|
781 return hash;
|
|
|
782 }
|
|
|
783
|
|
|
784 /* look for STR in PATH, optionally adding suffixes in SUFFIX */
|
|
|
785
|
|
|
786 static int
|
|
|
787 locate_file_in_directory (Lisp_Object path, Lisp_Object str,
|
|
|
788 CONST char *suffix, Lisp_Object *storeptr,
|
|
|
789 int mode)
|
|
|
790 {
|
|
|
791 /* This function can GC */
|
|
|
792 int fd;
|
|
|
793 int fn_size = 100;
|
|
|
794 char buf[100];
|
|
|
795 char *fn = buf;
|
|
|
796 int want_size;
|
|
|
797 struct stat st;
|
|
|
798 Lisp_Object filename = Qnil;
|
|
|
799 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
800 CONST char *nsuffix;
|
|
|
801
|
|
|
802 GCPRO3 (path, str, filename);
|
|
|
803
|
|
|
804 filename = Fexpand_file_name (str, path);
|
|
|
805 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
806 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
807 /* Of course, this could conceivably lose if luser sets
|
|
|
808 default-directory to be something non-absolute ... */
|
|
|
809 {
|
|
|
810 if (NILP (filename))
|
|
|
811 /* NIL means current dirctory */
|
|
|
812 filename = current_buffer->directory;
|
|
|
813 else
|
|
|
814 filename = Fexpand_file_name (filename,
|
|
|
815 current_buffer->directory);
|
|
|
816 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
817 {
|
|
|
818 /* Give up on this path element! */
|
|
|
819 UNGCPRO;
|
|
|
820 return -1;
|
|
|
821 }
|
|
|
822 }
|
|
|
823 /* Calculate maximum size of any filename made from
|
|
|
824 this path element/specified file name and any possible suffix. */
|
|
16
|
825 want_size = strlen (suffix) + XSTRING_LENGTH (filename) + 1;
|
|
0
|
826 if (fn_size < want_size)
|
|
|
827 fn = (char *) alloca (fn_size = 100 + want_size);
|
|
|
828
|
|
|
829 nsuffix = suffix;
|
|
|
830
|
|
|
831 /* Loop over suffixes. */
|
|
|
832 while (1)
|
|
|
833 {
|
|
|
834 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
|
835 int lsuffix = ((esuffix) ? (esuffix - nsuffix) : strlen (nsuffix));
|
|
|
836
|
|
|
837 /* Concatenate path element/specified name with the suffix. */
|
|
16
|
838 strncpy (fn, (char *) XSTRING_DATA (filename),
|
|
|
839 XSTRING_LENGTH (filename));
|
|
|
840 fn[XSTRING_LENGTH (filename)] = 0;
|
|
0
|
841 if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
|
|
|
842 strncat (fn, nsuffix, lsuffix);
|
|
|
843
|
|
|
844 /* Ignore file if it's a directory. */
|
|
|
845 if (stat (fn, &st) >= 0
|
|
|
846 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
847 {
|
|
|
848 /* Check that we can access or open it. */
|
|
|
849 if (mode >= 0)
|
|
|
850 fd = access (fn, mode);
|
|
|
851 else
|
|
|
852 #ifdef DOS_NT
|
|
|
853 fd = open (fn, O_RDONLY | O_BINARY, 0);
|
|
|
854 #else
|
|
|
855 fd = open (fn, O_RDONLY, 0);
|
|
|
856 #endif
|
|
|
857
|
|
|
858 if (fd >= 0)
|
|
|
859 {
|
|
|
860 /* We succeeded; return this descriptor and filename. */
|
|
|
861 if (storeptr)
|
|
|
862 *storeptr = build_string (fn);
|
|
|
863 UNGCPRO;
|
|
|
864
|
|
|
865 /* If we actually opened the file, set close-on-exec flag
|
|
|
866 on the new descriptor so that subprocesses can't whack
|
|
|
867 at it. */
|
|
|
868 if (mode < 0)
|
|
|
869 (void) fcntl (fd, F_SETFD, FD_CLOEXEC);
|
|
|
870
|
|
|
871 return fd;
|
|
|
872 }
|
|
|
873 }
|
|
|
874
|
|
|
875 /* Advance to next suffix. */
|
|
|
876 if (esuffix == 0)
|
|
|
877 break;
|
|
|
878 nsuffix += lsuffix + 1;
|
|
|
879 }
|
|
|
880
|
|
|
881 UNGCPRO;
|
|
|
882 return -1;
|
|
|
883 }
|
|
|
884
|
|
|
885 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
886
|
|
|
887 static int
|
|
|
888 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
889 CONST char *suffix, Lisp_Object *storeptr,
|
|
|
890 int mode)
|
|
|
891 {
|
|
|
892 /* This function can GC */
|
|
|
893 int absolute;
|
|
|
894 struct gcpro gcpro1;
|
|
|
895
|
|
|
896 /* is this necessary? */
|
|
|
897 GCPRO1 (path);
|
|
|
898
|
|
|
899 absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
900
|
|
|
901 for (; !NILP (path); path = Fcdr (path))
|
|
|
902 {
|
|
|
903 int val = locate_file_in_directory (Fcar (path), str, suffix,
|
|
|
904 storeptr, mode);
|
|
|
905 if (val >= 0)
|
|
|
906 {
|
|
|
907 UNGCPRO;
|
|
|
908 return val;
|
|
|
909 }
|
|
|
910 if (absolute)
|
|
|
911 break;
|
|
|
912 }
|
|
|
913
|
|
|
914 UNGCPRO;
|
|
|
915 return -1;
|
|
|
916 }
|
|
|
917
|
|
|
918 /* Construct a list of all files to search for. */
|
|
|
919
|
|
|
920 static Lisp_Object
|
|
|
921 locate_file_construct_suffixed_files (Lisp_Object str, CONST char *suffix)
|
|
|
922 {
|
|
|
923 int want_size;
|
|
|
924 int fn_size = 100;
|
|
|
925 char buf[100];
|
|
|
926 char *fn = buf;
|
|
|
927 CONST char *nsuffix;
|
|
|
928 Lisp_Object suffixtab = Qnil;
|
|
|
929
|
|
|
930 /* Calculate maximum size of any filename made from
|
|
|
931 this path element/specified file name and any possible suffix. */
|
|
16
|
932 want_size = strlen (suffix) + XSTRING_LENGTH (str) + 1;
|
|
0
|
933 if (fn_size < want_size)
|
|
|
934 fn = (char *) alloca (fn_size = 100 + want_size);
|
|
|
935
|
|
|
936 nsuffix = suffix;
|
|
|
937
|
|
|
938 while (1)
|
|
|
939 {
|
|
|
940 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
|
941 int lsuffix = ((esuffix) ? (esuffix - nsuffix) : strlen (nsuffix));
|
|
|
942
|
|
|
943 /* Concatenate path element/specified name with the suffix. */
|
|
16
|
944 strncpy (fn, (char *) XSTRING_DATA (str), XSTRING_LENGTH (str));
|
|
|
945 fn[XSTRING_LENGTH (str)] = 0;
|
|
0
|
946 if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */
|
|
|
947 strncat (fn, nsuffix, lsuffix);
|
|
|
948
|
|
|
949 suffixtab = Fcons (build_string (fn), suffixtab);
|
|
|
950 /* Advance to next suffix. */
|
|
|
951 if (esuffix == 0)
|
|
|
952 break;
|
|
|
953 nsuffix += lsuffix + 1;
|
|
|
954 }
|
|
|
955 return Fnreverse (suffixtab);
|
|
|
956 }
|
|
|
957
|
|
|
958 /* Search for a file whose name is STR, looking in directories
|
|
|
959 in the Lisp list PATH, and trying suffixes from SUFFIX.
|
|
|
960 SUFFIX is a string containing possible suffixes separated by colons.
|
|
|
961 On success, returns a file descriptor. On failure, returns -1.
|
|
|
962
|
|
|
963 MODE nonnegative means don't open the files,
|
|
|
964 just look for one for which access(file,MODE) succeeds. In this case,
|
|
|
965 returns 1 on success.
|
|
|
966
|
|
|
967 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
968 the file actually found should be stored as a Lisp string.
|
|
|
969 Nil is stored there on failure.
|
|
|
970
|
|
|
971 Called openp() in FSFmacs. */
|
|
|
972
|
|
|
973 int
|
|
|
974 locate_file (Lisp_Object path, Lisp_Object str, CONST char *suffix,
|
|
|
975 Lisp_Object *storeptr, int mode)
|
|
|
976 {
|
|
|
977 /* This function can GC */
|
|
|
978 Lisp_Object suffixtab = Qnil;
|
|
|
979 Lisp_Object pathtail;
|
|
|
980 int val;
|
|
|
981 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
982
|
|
|
983 if (storeptr)
|
|
|
984 *storeptr = Qnil;
|
|
|
985
|
|
|
986 /* if this filename has directory components, it's too complicated
|
|
|
987 to try and use the hash tables. */
|
|
|
988 if (!NILP (Ffile_name_directory (str)))
|
|
|
989 return locate_file_without_hash (path, str, suffix, storeptr,
|
|
|
990 mode);
|
|
|
991
|
|
|
992 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
993 unless some caller has fucked up. */
|
|
|
994 GCPRO3 (path, str, suffixtab);
|
|
|
995
|
|
|
996 suffixtab = locate_file_construct_suffixed_files (str, suffix);
|
|
|
997
|
|
|
998 for (pathtail = path; !NILP (pathtail); pathtail = Fcdr (pathtail))
|
|
|
999 {
|
|
|
1000 Lisp_Object pathel = Fcar (pathtail);
|
|
|
1001 Lisp_Object hashtab;
|
|
|
1002 Lisp_Object tail;
|
|
|
1003 int found;
|
|
|
1004
|
|
|
1005 /* If this path element is relative, we have to look by hand.
|
|
|
1006 Can't set string property in a pure string. */
|
|
|
1007 if (NILP (pathel) || NILP (Ffile_name_absolute_p (pathel)) ||
|
|
|
1008 purified (pathel))
|
|
|
1009 {
|
|
|
1010 val = locate_file_in_directory (pathel, str, suffix, storeptr,
|
|
|
1011 mode);
|
|
|
1012 if (val >= 0)
|
|
|
1013 {
|
|
|
1014 UNGCPRO;
|
|
|
1015 return val;
|
|
|
1016 }
|
|
|
1017 continue;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 hashtab = locate_file_find_directory_hash_table (pathel);
|
|
|
1021
|
|
|
1022 /* Loop over suffixes. */
|
|
|
1023 for (tail = suffixtab, found = 0; !NILP (tail) && !found;
|
|
|
1024 tail = Fcdr (tail))
|
|
|
1025 {
|
|
|
1026 if (!NILP (Fgethash (Fcar (tail), hashtab, Qnil)))
|
|
|
1027 found = 1;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (found)
|
|
|
1031 {
|
|
|
1032 /* This is a likely candidate. Look by hand in this directory
|
|
|
1033 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1034 val = locate_file_in_directory (pathel, str, suffix, storeptr,
|
|
|
1035 mode);
|
|
|
1036 if (val >= 0)
|
|
|
1037 {
|
|
|
1038 UNGCPRO;
|
|
|
1039 return val;
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1043 a directory ...) So refresh our hashing. */
|
|
|
1044 locate_file_refresh_hashing (pathel);
|
|
|
1045 }
|
|
|
1046 }
|
|
|
1047
|
|
|
1048 /* File is probably not there, but check the hard way just in case. */
|
|
|
1049 val = locate_file_without_hash (path, str, suffix, storeptr,
|
|
|
1050 mode);
|
|
|
1051 if (val >= 0)
|
|
|
1052 {
|
|
|
1053 /* Sneaky user added a file without telling us. */
|
|
|
1054 Flocate_file_clear_hashing (path);
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 UNGCPRO;
|
|
|
1058 return val;
|
|
|
1059 }
|
|
|
1060
|
|
|
1061 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing,
|
|
|
1062 Slocate_file_clear_hashing, 1, 1, 0 /*
|
|
|
1063 Clear the hash records for the specified list of directories.
|
|
|
1064 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1065 track the following environmental changes:
|
|
|
1066
|
|
|
1067 -- changes of any sort to the list of directories to be searched.
|
|
|
1068 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1069 directories in the list.
|
|
|
1070 -- byte-compilation of a .el file into a .elc file.
|
|
|
1071
|
|
|
1072 `locate-file' will primarily get confused if you add a file that shadows
|
|
|
1073 (i.e. has the same name as) another file further down in the directory list.
|
|
|
1074 In this case, you must call `locate-file-clear-hashing'.
|
|
|
1075 */ )
|
|
|
1076 (path)
|
|
|
1077 Lisp_Object path;
|
|
|
1078 {
|
|
|
1079 Lisp_Object pathtail;
|
|
|
1080
|
|
|
1081 for (pathtail = path; !NILP (pathtail); pathtail = Fcdr (pathtail))
|
|
|
1082 {
|
|
|
1083 Lisp_Object pathel = Fcar (pathtail);
|
|
|
1084 if (!purified (pathel))
|
|
|
1085 Fput (pathel, Qlocate_file_hash_table, Qnil);
|
|
|
1086 }
|
|
|
1087 return Qnil;
|
|
|
1088 }
|
|
|
1089
|
|
|
1090 #ifdef LOADHIST
|
|
|
1091
|
|
|
1092 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1093 into the load_history variable. The details depend on whether
|
|
|
1094 the source has an associated file name or not. */
|
|
|
1095
|
|
|
1096 static void
|
|
|
1097 build_load_history (int loading, Lisp_Object source)
|
|
|
1098 {
|
|
|
1099 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1100 REGISTER Lisp_Object tem, tem2;
|
|
|
1101 int foundit;
|
|
|
1102
|
|
|
1103 /* Don't bother recording anything for preloaded files. */
|
|
|
1104 if (purify_flag)
|
|
|
1105 return;
|
|
|
1106
|
|
|
1107 tail = Vload_history;
|
|
|
1108 prev = Qnil;
|
|
|
1109 foundit = 0;
|
|
|
1110 while (!NILP (tail))
|
|
|
1111 {
|
|
|
1112 tem = Fcar (tail);
|
|
|
1113
|
|
|
1114 /* Find the feature's previous assoc list... */
|
|
|
1115 if (!NILP (Fequal (source, Fcar (tem))))
|
|
|
1116 {
|
|
|
1117 foundit = 1;
|
|
|
1118
|
|
|
1119 /* If we're loading, remove it. */
|
|
|
1120 if (loading)
|
|
|
1121 {
|
|
|
1122 if (NILP (prev))
|
|
|
1123 Vload_history = Fcdr (tail);
|
|
|
1124 else
|
|
|
1125 Fsetcdr (prev, Fcdr (tail));
|
|
|
1126 }
|
|
|
1127
|
|
|
1128 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1129 else
|
|
|
1130 {
|
|
|
1131 tem2 = Vcurrent_load_list;
|
|
|
1132
|
|
|
1133 while (CONSP (tem2))
|
|
|
1134 {
|
|
|
1135 newelt = Fcar (tem2);
|
|
|
1136
|
|
|
1137 if (NILP (Fmemq (newelt, tem)))
|
|
|
1138 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1139 Fcons (newelt, Fcdr (tem))));
|
|
|
1140
|
|
|
1141 tem2 = Fcdr (tem2);
|
|
|
1142 QUIT;
|
|
|
1143 }
|
|
|
1144 }
|
|
|
1145 }
|
|
|
1146 else
|
|
|
1147 prev = tail;
|
|
|
1148 tail = Fcdr (tail);
|
|
|
1149 QUIT;
|
|
|
1150 }
|
|
|
1151
|
|
|
1152 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1153 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1154 an existing member for the current source. */
|
|
|
1155 if (loading || !foundit)
|
|
|
1156 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1157 Vload_history);
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 #else /* !LOADHIST */
|
|
|
1161 #define build_load_history(x,y)
|
|
|
1162 #endif /* !LOADHIST */
|
|
|
1163
|
|
|
1164
|
|
|
1165 #if 0 /* FSFmacs defun hack */
|
|
|
1166 Lisp_Object
|
|
|
1167 unreadpure (void) /* Used as unwind-protect function in readevalloop */
|
|
|
1168 {
|
|
|
1169 read_pure = 0;
|
|
|
1170 return Qnil;
|
|
|
1171 }
|
|
|
1172 #endif /* 0 */
|
|
|
1173
|
|
|
1174 static void
|
|
|
1175 readevalloop (Lisp_Object readcharfun,
|
|
|
1176 Lisp_Object sourcename,
|
|
|
1177 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1178 int printflag)
|
|
|
1179 {
|
|
|
1180 /* This function can GC */
|
|
|
1181 REGISTER Emchar c;
|
|
|
1182 REGISTER Lisp_Object val;
|
|
|
1183 int speccount = specpdl_depth ();
|
|
|
1184 struct gcpro gcpro1;
|
|
|
1185 struct buffer *b = 0;
|
|
|
1186
|
|
|
1187 if (BUFFERP (readcharfun))
|
|
|
1188 b = XBUFFER (readcharfun);
|
|
|
1189 else if (MARKERP (readcharfun))
|
|
|
1190 b = XMARKER (readcharfun)->buffer;
|
|
|
1191
|
|
|
1192 specbind (Qstandard_input, readcharfun);
|
|
|
1193 specbind (Qcurrent_load_list, Qnil);
|
|
|
1194
|
|
|
1195 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1196 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1197 #endif
|
|
|
1198 GCPRO1 (sourcename);
|
|
|
1199
|
|
|
1200 LOADHIST_ATTACH (sourcename);
|
|
|
1201
|
|
|
1202 while (1)
|
|
|
1203 {
|
|
|
1204 QUIT;
|
|
|
1205
|
|
|
1206 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
|
1207 error ("Reading from killed buffer");
|
|
|
1208
|
|
|
1209 c = readchar (readcharfun);
|
|
|
1210 if (c == ';')
|
|
|
1211 {
|
|
|
1212 /* Skip comment */
|
|
|
1213 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1214 QUIT;
|
|
|
1215 continue;
|
|
|
1216 }
|
|
|
1217 if (c < 0)
|
|
|
1218 break;
|
|
|
1219
|
|
|
1220 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1221 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1222 continue;
|
|
|
1223
|
|
|
1224 #if 0 /* FSFmacs defun hack */
|
|
|
1225 if (purify_flag && c == '(')
|
|
|
1226 {
|
|
|
1227 int count1 = specpdl_depth ();
|
|
|
1228 record_unwind_protect (unreadpure, Qnil);
|
|
|
1229 val = read_list (readcharfun, ')', -1, 1);
|
|
|
1230 unbind_to (count1, Qnil);
|
|
|
1231 }
|
|
|
1232 else
|
|
|
1233 #else /* No "defun hack" -- Emacs 19 uses read-time syntax for bytecodes */
|
|
|
1234 {
|
|
|
1235 unreadchar (readcharfun, c);
|
|
|
1236 if (NILP (Vload_read_function))
|
|
|
1237 val = read0 (readcharfun);
|
|
|
1238 else
|
|
|
1239 val = call1 (Vload_read_function, readcharfun);
|
|
|
1240 }
|
|
|
1241 #endif
|
|
|
1242 val = (*evalfun) (val);
|
|
|
1243 if (printflag)
|
|
|
1244 {
|
|
|
1245 Vvalues = Fcons (val, Vvalues);
|
|
|
1246 if (EQ (Vstandard_output, Qt))
|
|
|
1247 Fprin1 (val, Qnil);
|
|
|
1248 else
|
|
|
1249 Fprint (val, Qnil);
|
|
|
1250 }
|
|
|
1251 }
|
|
|
1252
|
|
|
1253 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1254 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1255 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1256 sourcename);
|
|
|
1257 UNGCPRO;
|
|
|
1258
|
|
|
1259 unbind_to (speccount, Qnil);
|
|
|
1260 }
|
|
|
1261
|
|
|
1262 #ifndef standalone
|
|
|
1263
|
|
|
1264 DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 2, "bBuffer: " /*
|
|
|
1265 Execute BUFFER as Lisp code.
|
|
|
1266 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1267 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1268 PRINTFLAG controls printing of output:
|
|
|
1269 nil means discard it; anything else is stream for print.
|
|
|
1270
|
|
|
1271 If there is no error, point does not move. If there is an error,
|
|
|
1272 point remains at the end of the last character read from the buffer.
|
|
|
1273 Execute BUFFER as Lisp code.
|
|
|
1274 */ )
|
|
|
1275 (bufname, printflag)
|
|
|
1276 Lisp_Object bufname, printflag;
|
|
|
1277 {
|
|
|
1278 /* This function can GC */
|
|
|
1279 int speccount = specpdl_depth ();
|
|
|
1280 Lisp_Object tem, buf;
|
|
|
1281
|
|
|
1282 if (NILP (bufname))
|
|
|
1283 buf = Fcurrent_buffer ();
|
|
|
1284 else
|
|
|
1285 buf = Fget_buffer (bufname);
|
|
|
1286 if (NILP (buf))
|
|
|
1287 error ("No such buffer.");
|
|
|
1288
|
|
|
1289 if (NILP (printflag))
|
|
|
1290 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1291 else
|
|
|
1292 tem = printflag;
|
|
|
1293 specbind (Qstandard_output, tem);
|
|
|
1294 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1295 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1296 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1297 !NILP (printflag));
|
|
|
1298
|
|
|
1299 return unbind_to (speccount, Qnil);
|
|
|
1300 }
|
|
|
1301
|
|
|
1302 #if 0
|
|
|
1303 xxDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "" /*
|
|
|
1304 Execute the current buffer as Lisp code.
|
|
|
1305 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1306 nil means discard it; anything else is stream for print.
|
|
|
1307
|
|
|
1308 If there is no error, point does not move. If there is an error,
|
|
|
1309 point remains at the end of the last character read from the buffer.
|
|
|
1310 */ )
|
|
|
1311 (printflag)
|
|
|
1312 Lisp_Object printflag;
|
|
|
1313 {
|
|
|
1314 code omitted;
|
|
|
1315 }
|
|
|
1316 #endif
|
|
|
1317
|
|
|
1318 DEFUN ("eval-region", Feval_region, Seval_region, 2, 3, "r" /*
|
|
|
1319 Execute the region as Lisp code.
|
|
|
1320 When called from programs, expects two arguments,
|
|
|
1321 giving starting and ending indices in the current buffer
|
|
|
1322 of the text to be executed.
|
|
|
1323 Programs can pass third argument PRINTFLAG which controls output:
|
|
|
1324 nil means discard it; anything else is stream for printing it.
|
|
|
1325
|
|
|
1326 If there is no error, point does not move. If there is an error,
|
|
|
1327 point remains at the end of the last character read from the buffer.
|
|
|
1328
|
|
|
1329 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1330 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1331 see some text temporarily disappear because of this.
|
|
|
1332 */ )
|
|
|
1333 (b, e, printflag)
|
|
|
1334 Lisp_Object b, e, printflag;
|
|
|
1335 {
|
|
|
1336 /* This function can GC */
|
|
|
1337 int speccount = specpdl_depth ();
|
|
|
1338 Lisp_Object tem;
|
|
|
1339 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1340
|
|
|
1341 if (NILP (printflag))
|
|
|
1342 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1343 else
|
|
|
1344 tem = printflag;
|
|
|
1345 specbind (Qstandard_output, tem);
|
|
|
1346
|
|
|
1347 if (NILP (printflag))
|
|
|
1348 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1349 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1350
|
|
|
1351 /* This both uses b and checks its type. */
|
|
|
1352 Fgoto_char (b, cbuf);
|
|
|
1353 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), e, cbuf);
|
|
|
1354 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
|
1355 !NILP (printflag));
|
|
|
1356
|
|
|
1357 return unbind_to (speccount, Qnil);
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 #endif /* standalone */
|
|
|
1361
|
|
|
1362 DEFUN ("read", Fread, Sread, 0, 1, 0 /*
|
|
|
1363 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1364 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1365 STREAM or the value of `standard-input' may be:
|
|
|
1366 a buffer (read from point and advance it)
|
|
|
1367 a marker (read from where it points and advance it)
|
|
|
1368 a function (call it with no arguments for each character,
|
|
|
1369 call it with a char as argument to push a char back)
|
|
|
1370 a string (takes text from string, starting at the beginning)
|
|
|
1371 t (read text line using minibuffer and use it).
|
|
|
1372 */ )
|
|
|
1373 (stream)
|
|
|
1374 Lisp_Object stream;
|
|
|
1375 {
|
|
|
1376 if (NILP (stream))
|
|
|
1377 stream = Vstandard_input;
|
|
|
1378 if (EQ (stream, Qt))
|
|
|
1379 stream = Qread_char;
|
|
|
1380
|
|
|
1381 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1382 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1383 #endif
|
|
|
1384 #ifndef standalone
|
|
|
1385 if (EQ (stream, Qread_char))
|
|
|
1386 {
|
|
|
1387 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
|
1388 build_translated_string ("Lisp expression: "));
|
|
|
1389 return (Fcar (Fread_from_string (val, Qnil, Qnil)));
|
|
|
1390 }
|
|
|
1391 #endif
|
|
|
1392
|
|
|
1393 if (STRINGP (stream))
|
|
|
1394 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1395
|
|
|
1396 return read0 (stream);
|
|
|
1397 }
|
|
|
1398
|
|
|
1399 DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0 /*
|
|
|
1400 Read one Lisp expression which is represented as text by STRING.
|
|
|
1401 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1402 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1403 they default to 0 and (length STRING) respectively.
|
|
|
1404 */ )
|
|
|
1405 (string, start, end)
|
|
|
1406 Lisp_Object string, start, end;
|
|
|
1407 {
|
|
|
1408 Bytecount startval, endval;
|
|
|
1409 Lisp_Object tem;
|
|
|
1410 Lisp_Object lispstream = Qnil;
|
|
|
1411 struct gcpro gcpro1;
|
|
|
1412
|
|
|
1413 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1414 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1415 #endif
|
|
|
1416 GCPRO1 (lispstream);
|
|
|
1417 CHECK_STRING (string);
|
|
|
1418 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1419 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1420 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1421 endval - startval);
|
|
|
1422
|
|
|
1423 tem = read0 (lispstream);
|
|
|
1424 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1425 At least our reader is reentrant ... */
|
|
|
1426 tem =
|
|
|
1427 (Fcons (tem, make_int
|
|
|
1428 (bytecount_to_charcount
|
|
16
|
1429 (XSTRING_DATA (string),
|
|
0
|
1430 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1431 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1432 UNGCPRO;
|
|
|
1433 return tem;
|
|
|
1434 }
|
|
|
1435
|
|
|
1436
|
|
|
1437 #ifdef LISP_BACKQUOTES
|
|
|
1438
|
|
|
1439 static Lisp_Object
|
|
|
1440 backquote_unwind (Lisp_Object ptr)
|
|
|
1441 { /* used as unwind-protect function in read0() */
|
|
|
1442 int *counter = (int *) get_opaque_ptr (ptr);
|
|
|
1443 if (--*counter < 0)
|
|
|
1444 *counter = 0;
|
|
|
1445 free_opaque_ptr (ptr);
|
|
|
1446 return Qnil;
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 #endif
|
|
|
1450
|
|
|
1451 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1452 are not allowed. See also read1(). */
|
|
|
1453 static Lisp_Object
|
|
|
1454 read0 (Lisp_Object readcharfun)
|
|
|
1455 {
|
|
|
1456 Lisp_Object val;
|
|
|
1457
|
|
|
1458 val = read1 (readcharfun);
|
|
|
1459 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1460 {
|
|
|
1461 Emchar c = XCHAR (XCDR (val));
|
|
|
1462 free_cons (XCONS (val));
|
|
|
1463 return Fsignal (Qinvalid_read_syntax,
|
|
|
1464 list1 (Fchar_to_string (make_char (c))));
|
|
|
1465 }
|
|
|
1466
|
|
|
1467 return val;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 static Emchar
|
|
|
1471 read_escape (Lisp_Object readcharfun)
|
|
|
1472 {
|
|
|
1473 /* This function can GC */
|
|
|
1474 Emchar c = readchar (readcharfun);
|
|
|
1475 switch (c)
|
|
|
1476 {
|
|
|
1477 case 'a': return '\007';
|
|
|
1478 case 'b': return '\b';
|
|
|
1479 case 'd': return 0177;
|
|
|
1480 case 'e': return 033;
|
|
|
1481 case 'f': return '\f';
|
|
|
1482 case 'n': return '\n';
|
|
|
1483 case 'r': return '\r';
|
|
|
1484 case 't': return '\t';
|
|
|
1485 case 'v': return '\v';
|
|
|
1486 case '\n': return -1;
|
|
|
1487
|
|
|
1488 case 'M':
|
|
|
1489 c = readchar (readcharfun);
|
|
|
1490 if (c != '-')
|
|
|
1491 error ("Invalid escape character syntax");
|
|
|
1492 c = readchar (readcharfun);
|
|
|
1493 if (c == '\\')
|
|
|
1494 c = read_escape (readcharfun);
|
|
|
1495 return c | 0200;
|
|
|
1496
|
|
|
1497 #define FSF_KEYS
|
|
|
1498 #ifdef FSF_KEYS
|
|
|
1499
|
|
|
1500 #define alt_modifier (0x040000)
|
|
|
1501 #define super_modifier (0x080000)
|
|
|
1502 #define hyper_modifier (0x100000)
|
|
|
1503 #define shift_modifier (0x200000)
|
|
|
1504 /* fsf uses a different modifiers for meta and control. Possibly
|
|
|
1505 byte_compiled code will still work fsfmacs, though... --Stig
|
|
|
1506
|
|
|
1507 #define ctl_modifier (0x400000)
|
|
|
1508 #define meta_modifier (0x800000)
|
|
|
1509 */
|
|
|
1510 #define FSF_LOSSAGE(mask) \
|
|
|
1511 if (puke_on_fsf_keys || ((c = readchar (readcharfun)) != '-')) \
|
|
|
1512 error ("Invalid escape character syntax"); \
|
|
|
1513 if ((c = readchar (readcharfun)) == '\\') \
|
|
|
1514 c = read_escape (readcharfun); \
|
|
|
1515 return c | mask
|
|
|
1516
|
|
|
1517 case 'S': FSF_LOSSAGE (shift_modifier);
|
|
|
1518 case 'H': FSF_LOSSAGE (hyper_modifier);
|
|
|
1519 case 'A': FSF_LOSSAGE (alt_modifier);
|
|
|
1520 case 's': FSF_LOSSAGE (super_modifier);
|
|
|
1521 #undef alt_modifier
|
|
|
1522 #undef super_modifier
|
|
|
1523 #undef hyper_modifier
|
|
|
1524 #undef shift_modifier
|
|
|
1525 #undef FSF_LOSSAGE
|
|
|
1526
|
|
|
1527 #endif /* FSF_KEYS */
|
|
|
1528
|
|
|
1529 case 'C':
|
|
|
1530 c = readchar (readcharfun);
|
|
|
1531 if (c != '-')
|
|
|
1532 error ("Invalid escape character syntax");
|
|
|
1533 case '^':
|
|
|
1534 c = readchar (readcharfun);
|
|
|
1535 if (c == '\\')
|
|
|
1536 c = read_escape (readcharfun);
|
|
|
1537 /* FSFmacs junk for non-ASCII controls.
|
|
|
1538 Not used here. */
|
|
|
1539 if (c == '?')
|
|
|
1540 return 0177;
|
|
|
1541 else
|
|
|
1542 return (c & (0200 | 037));
|
|
|
1543
|
|
|
1544 case '0':
|
|
|
1545 case '1':
|
|
|
1546 case '2':
|
|
|
1547 case '3':
|
|
|
1548 case '4':
|
|
|
1549 case '5':
|
|
|
1550 case '6':
|
|
|
1551 case '7':
|
|
|
1552 /* An octal escape, as in ANSI C. */
|
|
|
1553 {
|
|
|
1554 REGISTER Emchar i = c - '0';
|
|
|
1555 REGISTER int count = 0;
|
|
|
1556 while (++count < 3)
|
|
|
1557 {
|
|
|
1558 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1559 i = (i << 3) + (c - '0');
|
|
|
1560 else
|
|
|
1561 {
|
|
|
1562 unreadchar (readcharfun, c);
|
|
|
1563 break;
|
|
|
1564 }
|
|
|
1565 }
|
|
|
1566 return i;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 case 'x':
|
|
|
1570 /* A hex escape, as in ANSI C. */
|
|
|
1571 {
|
|
|
1572 REGISTER Emchar i = 0;
|
|
|
1573 while (1)
|
|
|
1574 {
|
|
|
1575 c = readchar (readcharfun);
|
|
|
1576 /* Remember, can't use isdigit(), isalpha() etc. on Emchars */
|
|
|
1577 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1578 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1579 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1580 else
|
|
|
1581 {
|
|
|
1582 unreadchar (readcharfun, c);
|
|
|
1583 break;
|
|
|
1584 }
|
|
|
1585 }
|
|
|
1586 return i;
|
|
|
1587 }
|
|
|
1588
|
|
16
|
1589
|
|
0
|
1590 default:
|
|
|
1591 return c;
|
|
|
1592 }
|
|
|
1593 }
|
|
|
1594
|
|
|
1595
|
|
|
1596
|
|
|
1597 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1598 static Bytecount
|
|
|
1599 read_atom_0 (Lisp_Object readcharfun, Emchar firstchar, int *saw_a_backslash)
|
|
|
1600 {
|
|
|
1601 /* This function can GC */
|
|
|
1602 Emchar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
|
1603 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1604
|
|
|
1605 *saw_a_backslash = 0;
|
|
|
1606
|
|
|
1607 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1608 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1609 || c == '(' || c == ')'
|
|
|
1610 #ifndef LISP_FLOAT_TYPE
|
|
|
1611 /* If we have floating-point support, then we need
|
|
|
1612 to allow <digits><dot><digits>. */
|
|
|
1613 || c =='.'
|
|
|
1614 #endif /* not LISP_FLOAT_TYPE */
|
|
|
1615 || c == '[' || c == ']' || c == '#'
|
|
|
1616 ))
|
|
|
1617 {
|
|
|
1618 if (c == '\\')
|
|
|
1619 {
|
|
|
1620 c = readchar (readcharfun);
|
|
|
1621 *saw_a_backslash = 1;
|
|
|
1622 }
|
|
|
1623 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
1624 QUIT;
|
|
|
1625 c = readchar (readcharfun);
|
|
|
1626 }
|
|
|
1627
|
|
|
1628 if (c >= 0)
|
|
|
1629 unreadchar (readcharfun, c);
|
|
|
1630 /* blasted terminating 0 */
|
|
|
1631 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), 0);
|
|
|
1632 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1633
|
|
|
1634 return (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1);
|
|
|
1635 }
|
|
|
1636
|
|
|
1637 static Lisp_Object parse_integer (CONST Bufbyte *buf, Bytecount len, int base);
|
|
|
1638
|
|
|
1639 static Lisp_Object
|
|
|
1640 read_atom (Lisp_Object readcharfun,
|
|
|
1641 Emchar firstchar,
|
|
|
1642 int uninterned_symbol)
|
|
|
1643 {
|
|
|
1644 /* This function can GC */
|
|
|
1645 int saw_a_backslash;
|
|
|
1646 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1647 char *read_ptr = (char *)
|
|
|
1648 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1649
|
|
|
1650 /* Is it an integer? */
|
|
|
1651 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1652 {
|
|
|
1653 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1654 being an integer or a float. This means that 123\456 is a
|
|
|
1655 symbol, as is \123 (which is the way (intern "123") prints).
|
|
|
1656 Also, if token was preceeded by #:, it's always a symbol.
|
|
|
1657 */
|
|
|
1658 char *p = read_ptr + len;
|
|
|
1659 char *p1 = read_ptr;
|
|
|
1660
|
|
|
1661 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1662 if (p1 != p)
|
|
|
1663 {
|
|
|
1664 int c;
|
|
|
1665
|
|
|
1666 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1667 p1++;
|
|
|
1668 #ifdef LISP_FLOAT_TYPE
|
|
|
1669 /* Integers can have trailing decimal points. */
|
|
|
1670 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1671 p1++;
|
|
|
1672 #endif
|
|
|
1673 if (p1 == p)
|
|
|
1674 {
|
|
|
1675 /* It is an integer. */
|
|
|
1676 #ifdef LISP_FLOAT_TYPE
|
|
|
1677 if (p1[-1] == '.')
|
|
|
1678 p1[-1] = '\0';
|
|
|
1679 #endif
|
|
|
1680 #if 0
|
|
|
1681 {
|
|
|
1682 int number = 0;
|
|
|
1683 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1684 number = atoi (read_buffer);
|
|
|
1685 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1686 number = atol (read_buffer);
|
|
|
1687 else
|
|
|
1688 abort ();
|
|
|
1689 return (make_int (number));
|
|
|
1690 }
|
|
|
1691 #else
|
|
|
1692 return (parse_integer ((Bufbyte *) read_ptr, len, 10));
|
|
|
1693 #endif
|
|
|
1694 }
|
|
|
1695 }
|
|
|
1696 #ifdef LISP_FLOAT_TYPE
|
|
|
1697 if (isfloat_string (read_ptr))
|
|
|
1698 return make_float (atof (read_ptr));
|
|
|
1699 #endif
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 {
|
|
|
1703 Lisp_Object sym;
|
|
|
1704 if (uninterned_symbol)
|
|
|
1705 sym = (Fmake_symbol ((purify_flag)
|
|
|
1706 ? make_pure_pname ((Bufbyte *) read_ptr, len, 0)
|
|
|
1707 : make_string ((Bufbyte *) read_ptr, len)));
|
|
|
1708 else
|
|
|
1709 {
|
|
|
1710 /* intern will purecopy pname if necessary */
|
|
|
1711 Lisp_Object name = make_string ((Bufbyte *) read_ptr, len);
|
|
|
1712 sym = Fintern (name, Qnil);
|
|
|
1713 }
|
|
|
1714 if (SYMBOL_IS_KEYWORD (sym))
|
|
|
1715 {
|
|
|
1716 /* the LISP way is to put keywords in their own package, but we don't
|
|
|
1717 have packages, so we do something simpler. Someday, maybe we'll
|
|
|
1718 have packages and then this will be reworked. --Stig. */
|
|
|
1719 XSYMBOL (sym)->value = sym;
|
|
|
1720 }
|
|
|
1721 return (sym);
|
|
|
1722 }
|
|
|
1723 }
|
|
|
1724
|
|
|
1725
|
|
|
1726 static Lisp_Object
|
|
|
1727 parse_integer (CONST Bufbyte *buf, Bytecount len, int base)
|
|
|
1728 {
|
|
|
1729 CONST Bufbyte *lim = buf + len;
|
|
|
1730 CONST Bufbyte *p = buf;
|
|
|
1731 unsigned EMACS_INT num = 0;
|
|
|
1732 int negativland = 0;
|
|
|
1733
|
|
|
1734 if (*p == '-')
|
|
|
1735 {
|
|
|
1736 negativland = 1;
|
|
|
1737 p++;
|
|
|
1738 }
|
|
|
1739 else if (*p == '+')
|
|
|
1740 {
|
|
|
1741 p++;
|
|
|
1742 }
|
|
|
1743
|
|
|
1744 if (p == lim)
|
|
|
1745 goto loser;
|
|
|
1746
|
|
|
1747 for (; p < lim; p++)
|
|
|
1748 {
|
|
|
1749 int c = *p;
|
|
|
1750 unsigned EMACS_INT onum;
|
|
|
1751
|
|
|
1752 if (isdigit (c))
|
|
|
1753 c = c - '0';
|
|
|
1754 else if (isupper (c))
|
|
|
1755 c = c - 'A' + 10;
|
|
|
1756 else if (islower (c))
|
|
|
1757 c = c - 'a' + 10;
|
|
|
1758 else
|
|
|
1759 goto loser;
|
|
|
1760
|
|
|
1761 if (c < 0 || c >= base)
|
|
|
1762 goto loser;
|
|
|
1763
|
|
|
1764 onum = num;
|
|
|
1765 num = num * base + c;
|
|
|
1766 if (num < onum)
|
|
|
1767 goto overflow;
|
|
|
1768 }
|
|
|
1769
|
|
|
1770 {
|
|
|
1771 Lisp_Object result = make_int ((negativland) ? -num : num);
|
|
|
1772 if (num && ((XINT (result) < 0) != negativland))
|
|
|
1773 goto overflow;
|
|
|
1774 if (XINT (result) != ((negativland) ? -num : num))
|
|
|
1775 goto overflow;
|
|
|
1776 return (result);
|
|
|
1777 }
|
|
|
1778 overflow:
|
|
|
1779 return Fsignal (Qinvalid_read_syntax,
|
|
|
1780 list3 (build_translated_string
|
|
|
1781 ("Integer constant overflow in reader"),
|
|
|
1782 make_string (buf, len),
|
|
|
1783 make_int (base)));
|
|
|
1784 loser:
|
|
|
1785 return Fsignal (Qinvalid_read_syntax,
|
|
|
1786 list3 (build_translated_string
|
|
|
1787 ("Invalid integer constant in reader"),
|
|
|
1788 make_string (buf, len),
|
|
|
1789 make_int (base)));
|
|
|
1790 }
|
|
|
1791
|
|
|
1792
|
|
|
1793 static Lisp_Object
|
|
|
1794 read_integer (Lisp_Object readcharfun, int base)
|
|
|
1795 {
|
|
|
1796 /* This function can GC */
|
|
|
1797 int saw_a_backslash;
|
|
|
1798 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
1799 return (parse_integer
|
|
|
1800 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
1801 ((saw_a_backslash)
|
|
|
1802 ? 0 /* make parse_integer signal error */
|
|
|
1803 : len),
|
|
|
1804 base));
|
|
|
1805 }
|
|
|
1806
|
|
|
1807 static Lisp_Object
|
|
|
1808 read_bit_vector (Lisp_Object readcharfun)
|
|
|
1809 {
|
|
|
1810 unsigned_char_dynarr *dyn = Dynarr_new (unsigned char);
|
|
|
1811 Emchar c;
|
|
|
1812
|
|
|
1813 while (1)
|
|
|
1814 {
|
|
|
1815 c = readchar (readcharfun);
|
|
|
1816 if (c != '0' && c != '1')
|
|
|
1817 break;
|
|
|
1818 Dynarr_add (dyn, (unsigned char) (c - '0'));
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 if (c >= 0)
|
|
|
1822 unreadchar (readcharfun, c);
|
|
|
1823
|
|
|
1824 return make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
1825 Dynarr_length (dyn));
|
|
|
1826 }
|
|
|
1827
|
|
|
1828
|
|
|
1829
|
|
|
1830 /* structures */
|
|
|
1831
|
|
|
1832 struct structure_type *
|
|
|
1833 define_structure_type (Lisp_Object type,
|
|
|
1834 int (*validate) (Lisp_Object data,
|
|
|
1835 Error_behavior errb),
|
|
|
1836 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
1837 {
|
|
|
1838 struct structure_type st;
|
|
|
1839
|
|
|
1840 st.type = type;
|
|
|
1841 st.keywords = Dynarr_new (struct structure_keyword_entry);
|
|
|
1842 st.validate = validate;
|
|
|
1843 st.instantiate = instantiate;
|
|
|
1844 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
1845
|
|
|
1846 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
1847 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
1848 }
|
|
|
1849
|
|
|
1850 void
|
|
|
1851 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
1852 int (*validate) (Lisp_Object keyword,
|
|
|
1853 Lisp_Object value,
|
|
|
1854 Error_behavior errb))
|
|
|
1855 {
|
|
|
1856 struct structure_keyword_entry en;
|
|
|
1857
|
|
|
1858 en.keyword = keyword;
|
|
|
1859 en.validate = validate;
|
|
|
1860 Dynarr_add (st->keywords, en);
|
|
|
1861 }
|
|
|
1862
|
|
|
1863 static struct structure_type *
|
|
|
1864 recognized_structure_type (Lisp_Object type)
|
|
|
1865 {
|
|
|
1866 int i;
|
|
|
1867
|
|
|
1868 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
1869 {
|
|
|
1870 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
1871 if (EQ (st->type, type))
|
|
|
1872 return st;
|
|
|
1873 }
|
|
|
1874
|
|
|
1875 return 0;
|
|
|
1876 }
|
|
|
1877
|
|
|
1878 static Lisp_Object
|
|
|
1879 read_structure (Lisp_Object readcharfun)
|
|
|
1880 {
|
|
|
1881 Emchar c = readchar (readcharfun);
|
|
|
1882 Lisp_Object list = Qnil;
|
|
|
1883 Lisp_Object orig_list = Qnil;
|
|
|
1884 Lisp_Object already_seen = Qnil;
|
|
|
1885 struct structure_type *st;
|
|
|
1886 struct gcpro gcpro1, gcpro2;
|
|
|
1887
|
|
|
1888 GCPRO2 (orig_list, already_seen);
|
|
|
1889 if (c != '(')
|
|
|
1890 RETURN_UNGCPRO (continuable_syntax_error ("#s not followed by paren"));
|
|
|
1891 list = read_list (readcharfun, ')', 0, 0);
|
|
|
1892 orig_list = list;
|
|
|
1893 {
|
|
|
1894 int len = XINT (Flength (list));
|
|
|
1895 if (len == 0)
|
|
|
1896 RETURN_UNGCPRO (continuable_syntax_error
|
|
|
1897 ("structure type not specified"));
|
|
|
1898 if (!(len & 1))
|
|
|
1899 RETURN_UNGCPRO
|
|
|
1900 (continuable_syntax_error
|
|
|
1901 ("structures must have alternating keyword/value pairs"));
|
|
|
1902 }
|
|
|
1903
|
|
|
1904 st = recognized_structure_type (XCAR (list));
|
|
|
1905 if (!st)
|
|
|
1906 {
|
|
|
1907 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
1908 list2 (build_translated_string
|
|
|
1909 ("unrecognized structure type"),
|
|
|
1910 XCAR (list))));
|
|
|
1911 }
|
|
|
1912
|
|
|
1913 list = Fcdr (list);
|
|
|
1914 while (!NILP (list))
|
|
|
1915 {
|
|
|
1916 Lisp_Object keyword, value;
|
|
|
1917 int i;
|
|
|
1918 struct structure_keyword_entry *en;
|
|
|
1919
|
|
|
1920 keyword = Fcar (list);
|
|
|
1921 list = Fcdr (list);
|
|
|
1922 value = Fcar (list);
|
|
|
1923 list = Fcdr (list);
|
|
|
1924
|
|
|
1925 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
|
1926 {
|
|
|
1927 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
1928 list2 (build_translated_string
|
|
|
1929 ("structure keyword already seen"),
|
|
|
1930 keyword)));
|
|
|
1931 }
|
|
|
1932
|
|
|
1933 for (i = 0; i < Dynarr_length (st->keywords); i++)
|
|
|
1934 {
|
|
|
1935 en = Dynarr_atp (st->keywords, i);
|
|
|
1936 if (EQ (keyword, en->keyword))
|
|
|
1937 break;
|
|
|
1938 }
|
|
|
1939
|
|
|
1940 if (i == Dynarr_length (st->keywords))
|
|
|
1941 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
1942 list2 (build_translated_string
|
|
|
1943 ("unrecognized structure keyword"),
|
|
|
1944 keyword)));
|
|
|
1945
|
|
|
1946 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
1947 RETURN_UNGCPRO
|
|
|
1948 (Fsignal (Qinvalid_read_syntax,
|
|
|
1949 list3 (build_translated_string
|
|
|
1950 ("invalid value for structure keyword"),
|
|
|
1951 keyword, value)));
|
|
|
1952
|
|
|
1953 already_seen = Fcons (keyword, already_seen);
|
|
|
1954 }
|
|
|
1955
|
|
|
1956 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
|
1957 RETURN_UNGCPRO
|
|
|
1958 (Fsignal (Qinvalid_read_syntax,
|
|
|
1959 list2 (build_translated_string
|
|
|
1960 ("invalid structure initializer"),
|
|
|
1961 orig_list)));
|
|
|
1962
|
|
|
1963 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
|
1964 }
|
|
|
1965
|
|
|
1966
|
|
|
1967 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
1968 int terminator);
|
|
|
1969 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
1970
|
|
|
1971 /* Get the next character; filter out whitespace and comments */
|
|
|
1972
|
|
|
1973 static Emchar
|
|
|
1974 reader_nextchar (Lisp_Object readcharfun)
|
|
|
1975 {
|
|
|
1976 /* This function can GC */
|
|
|
1977 Emchar c;
|
|
|
1978
|
|
|
1979 retry:
|
|
|
1980 QUIT;
|
|
|
1981 c = readchar (readcharfun);
|
|
|
1982 if (c < 0)
|
|
|
1983 {
|
|
|
1984 if (LSTREAMP (readcharfun))
|
|
|
1985 signal_error (Qend_of_file,
|
|
|
1986 list1 (build_string ("internal input stream")));
|
|
|
1987 else
|
|
|
1988 signal_error (Qend_of_file, list1 (readcharfun));
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 switch (c)
|
|
|
1992 {
|
|
|
1993 default:
|
|
|
1994 {
|
|
|
1995 /* Ignore whitespace and control characters */
|
|
|
1996 if (c <= 040)
|
|
|
1997 goto retry;
|
|
|
1998 return (c);
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 case ';':
|
|
|
2002 {
|
|
|
2003 /* Comment */
|
|
|
2004 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2005 QUIT;
|
|
|
2006 goto retry;
|
|
|
2007 }
|
|
|
2008 }
|
|
|
2009 }
|
|
|
2010
|
|
|
2011 #if 0
|
|
|
2012 static Lisp_Object
|
|
|
2013 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2014 {
|
|
|
2015 if (pure)
|
|
|
2016 return (pure_cons (a, pure_cons (b, Qnil)));
|
|
|
2017 else
|
|
|
2018 return (list2 (a, b));
|
|
|
2019 }
|
|
|
2020 #endif
|
|
|
2021
|
|
|
2022 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2023 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2024 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2025 or dot followed by a non-number). To filter this stuff out,
|
|
|
2026 use read0(). */
|
|
|
2027
|
|
|
2028 static Lisp_Object
|
|
|
2029 read1 (Lisp_Object readcharfun)
|
|
|
2030 {
|
|
|
2031 Emchar c;
|
|
|
2032
|
|
|
2033 retry:
|
|
|
2034 c = reader_nextchar (readcharfun);
|
|
|
2035
|
|
|
2036 switch (c)
|
|
|
2037 {
|
|
|
2038 case '(':
|
|
|
2039 {
|
|
|
2040 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2041 /* if this is disabled, then other code in eval.c must be enabled */
|
|
|
2042 Emchar ch = reader_nextchar (readcharfun);
|
|
|
2043 switch (ch)
|
|
|
2044 {
|
|
|
2045 case '`':
|
|
|
2046 {
|
|
|
2047 Lisp_Object tem;
|
|
|
2048 int speccount = specpdl_depth ();
|
|
|
2049 ++old_backquote_flag;
|
|
|
2050 record_unwind_protect (backquote_unwind,
|
|
|
2051 make_opaque_ptr (&old_backquote_flag));
|
|
|
2052 tem = read0 (readcharfun);
|
|
|
2053 unbind_to (speccount, Qnil);
|
|
|
2054 ch = reader_nextchar (readcharfun);
|
|
|
2055 if (ch != ')')
|
|
|
2056 {
|
|
|
2057 unreadchar (readcharfun, ch);
|
|
|
2058 return Fsignal (Qinvalid_read_syntax,
|
|
|
2059 list1 (build_string
|
|
|
2060 ("Weird old-backquote syntax")));
|
|
|
2061 }
|
|
|
2062 return list2 (Qbacktick, tem);
|
|
|
2063 }
|
|
|
2064 case ',':
|
|
|
2065 {
|
|
|
2066 if (old_backquote_flag)
|
|
|
2067 {
|
|
|
2068 Lisp_Object tem, comma_type;
|
|
|
2069 ch = readchar (readcharfun);
|
|
|
2070 if (ch == '@')
|
|
|
2071 comma_type = Qcomma_at;
|
|
|
2072 else
|
|
|
2073 {
|
|
|
2074 if (ch >= 0)
|
|
|
2075 unreadchar (readcharfun, ch);
|
|
|
2076 comma_type = Qcomma;
|
|
|
2077 }
|
|
|
2078 tem = read0 (readcharfun);
|
|
|
2079 ch = reader_nextchar (readcharfun);
|
|
|
2080 if (ch != ')')
|
|
|
2081 {
|
|
|
2082 unreadchar (readcharfun, ch);
|
|
|
2083 return Fsignal (Qinvalid_read_syntax,
|
|
|
2084 list1 (build_string
|
|
|
2085 ("Weird old-backquote syntax")));
|
|
|
2086 }
|
|
|
2087 return list2 (comma_type, tem);
|
|
|
2088 }
|
|
|
2089 else
|
|
|
2090 {
|
|
|
2091 unreadchar (readcharfun, ch);
|
|
|
2092 #if 0
|
|
|
2093 return Fsignal (Qinvalid_read_syntax,
|
|
|
2094 list1 (build_string ("Comma outside of backquote")));
|
|
|
2095 #else
|
|
|
2096 /* #### - yuck....but this is reverse compatible. */
|
|
|
2097 /* mostly this is required by edebug, which does it's own
|
|
|
2098 annotated reading. We need to have an annotated_read
|
|
|
2099 function that records (with markers) the buffer
|
|
|
2100 positions of the elements that make up lists, then that
|
|
|
2101 can be used in edebug and bytecomp and the check above
|
|
|
2102 can go back in. --Stig */
|
|
|
2103 break;
|
|
|
2104 #endif
|
|
|
2105 }
|
|
|
2106 }
|
|
|
2107 default:
|
|
|
2108 unreadchar (readcharfun, ch);
|
|
|
2109 } /* switch(ch) */
|
|
|
2110 #endif /* old backquote crap... */
|
|
|
2111 return read_list (readcharfun, ')', 1, 1);
|
|
|
2112 }
|
|
|
2113 case '[':
|
|
|
2114 return (read_vector (readcharfun, ']'));
|
|
|
2115
|
|
|
2116 case ')':
|
|
|
2117 case ']':
|
|
|
2118 /* #### - huh? these don't do what they seem... */
|
|
|
2119 return (noseeum_cons (Qunbound, make_char (c)));
|
|
|
2120 case '.':
|
|
|
2121 {
|
|
|
2122 #ifdef LISP_FLOAT_TYPE
|
|
|
2123 /* If a period is followed by a number, then we should read it
|
|
|
2124 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2125 pair.
|
|
|
2126 */
|
|
|
2127 c = readchar (readcharfun);
|
|
|
2128 unreadchar (readcharfun, c);
|
|
|
2129
|
|
|
2130 /* Can't use isdigit on Emchars */
|
|
|
2131 if (c < '0' || c > '9')
|
|
|
2132 return (noseeum_cons (Qunbound, make_char ('.')));
|
|
|
2133
|
|
|
2134 /* Note that read_atom will loop
|
|
|
2135 at least once, assuring that we will not try to UNREAD
|
|
|
2136 two characters in a row.
|
|
|
2137 (I think this doesn't matter anymore because there should
|
|
|
2138 be no more danger in unreading multiple characters) */
|
|
|
2139 return (read_atom (readcharfun, '.', 0));
|
|
|
2140
|
|
|
2141 #else /* ! LISP_FLOAT_TYPE */
|
|
|
2142 return (noseeum_cons (Qunbound, make_char ('.')));
|
|
|
2143 #endif /* ! LISP_FLOAT_TYPE */
|
|
|
2144 }
|
|
|
2145
|
|
|
2146 case '#':
|
|
|
2147 {
|
|
|
2148 c = readchar (readcharfun);
|
|
|
2149 switch (c)
|
|
|
2150 {
|
|
|
2151 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2152 case '^':
|
|
|
2153 #endif
|
|
|
2154 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2155 case '&':
|
|
|
2156 #endif
|
|
|
2157 /* "#["-- byte-code constant syntax */
|
|
|
2158 /* purecons #[...] syntax */
|
|
|
2159 case '[': return (read_compiled_function (readcharfun, ']'
|
|
|
2160 /*, purify_flag */ ));
|
|
|
2161 /* "#:"-- quasi-implemented gensym syntax */
|
|
|
2162 case ':': return (read_atom (readcharfun, -1, 1));
|
|
|
2163 /* #'x => (function x) */
|
|
|
2164 case '\'': return (list2 (Qfunction, read0 (readcharfun)));
|
|
|
2165 #if 0
|
|
|
2166 /* RMS uses this syntax for fat-strings.
|
|
|
2167 If we use it for vectors, then obscure bugs happen.
|
|
|
2168 */
|
|
|
2169 /* "#(" -- Scheme/CL vector syntax */
|
|
|
2170 case '(': return (read_vector (readcharfun, ')'));
|
|
|
2171 #endif
|
|
|
2172 #if 0 /* FSFmacs */
|
|
|
2173 case '(':
|
|
|
2174 {
|
|
|
2175 Lisp_Object tmp;
|
|
|
2176 struct gcpro gcpro1;
|
|
|
2177
|
|
|
2178 /* Read the string itself. */
|
|
|
2179 tmp = read1 (readcharfun);
|
|
|
2180 if (!STRINGP (tmp))
|
|
|
2181 {
|
|
|
2182 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
|
2183 free_cons (XCONS (tmp));
|
|
|
2184 return (Fsignal (Qinvalid_read_syntax,
|
|
|
2185 list1 (build_string ("#"))));
|
|
|
2186 }
|
|
|
2187 GCPRO1 (tmp);
|
|
|
2188 /* Read the intervals and their properties. */
|
|
|
2189 while (1)
|
|
|
2190 {
|
|
|
2191 Lisp_Object beg, end, plist;
|
|
|
2192 Emchar ch;
|
|
|
2193 int invalid = 0;
|
|
|
2194
|
|
|
2195 beg = read1 (readcharfun);
|
|
|
2196 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2197 {
|
|
|
2198 ch = XCHAR (XCDR (beg));
|
|
|
2199 free_cons (XCONS (beg));
|
|
|
2200 if (ch == ')')
|
|
|
2201 break;
|
|
|
2202 else
|
|
|
2203 invalid = 1;
|
|
|
2204 }
|
|
|
2205 if (!invalid)
|
|
|
2206 {
|
|
|
2207 end = read1 (readcharfun);
|
|
|
2208 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2209 {
|
|
|
2210 free_cons (XCONS (end));
|
|
|
2211 invalid = 1;
|
|
|
2212 }
|
|
|
2213 }
|
|
|
2214 if (!invalid)
|
|
|
2215 {
|
|
|
2216 plist = read1 (readcharfun);
|
|
|
2217 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2218 {
|
|
|
2219 free_cons (XCONS (plist));
|
|
|
2220 invalid = 1;
|
|
|
2221 }
|
|
|
2222 }
|
|
|
2223 if (invalid)
|
|
|
2224 RETURN_UNGCPRO
|
|
|
2225 (Fsignal (Qinvalid_read_syntax,
|
|
|
2226 list2
|
|
|
2227 (build_string ("invalid string property list"),
|
|
|
2228 XCDR (plist))));
|
|
|
2229 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2230 }
|
|
|
2231 UNGCPRO;
|
|
|
2232 return tmp;
|
|
|
2233 }
|
|
|
2234 #endif /* 0 */
|
|
|
2235 case '@':
|
|
|
2236 {
|
|
|
2237 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2238 That's used in .elc files to skip over doc strings
|
|
|
2239 and function definitions. */
|
|
|
2240 int i, nskip = 0;
|
|
|
2241
|
|
|
2242 /* Read a decimal integer. */
|
|
|
2243 while ((c = readchar (readcharfun)) >= 0
|
|
|
2244 && c >= '0' && c <= '9')
|
|
|
2245 nskip = (10 * nskip) + (c - '0');
|
|
|
2246 if (c >= 0)
|
|
|
2247 unreadchar (readcharfun, c);
|
|
|
2248
|
|
|
2249 /* FSF has code here that maybe caches the skipped
|
|
|
2250 string. See above for why this is totally
|
|
|
2251 losing. We handle this differently. */
|
|
|
2252
|
|
|
2253 /* Skip that many characters. */
|
|
|
2254 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2255 c = readchar (readcharfun);
|
|
|
2256
|
|
|
2257 goto retry;
|
|
|
2258 }
|
|
|
2259 case '$': return Vload_file_name_internal;
|
|
|
2260 /* bit vectors */
|
|
|
2261 case '*': return (read_bit_vector (readcharfun));
|
|
|
2262 /* #o10 => 8 -- octal constant syntax */
|
|
|
2263 case 'o': return (read_integer (readcharfun, 8));
|
|
|
2264 /* #xdead => 57005 -- hex constant syntax */
|
|
|
2265 case 'x': return (read_integer (readcharfun, 16));
|
|
|
2266 /* #b010 => 2 -- binary constant syntax */
|
|
|
2267 case 'b': return (read_integer (readcharfun, 2));
|
|
|
2268 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
|
2269 case 's': return (read_structure (readcharfun));
|
|
|
2270 case '<':
|
|
|
2271 {
|
|
|
2272 unreadchar (readcharfun, c);
|
|
|
2273 return Fsignal (Qinvalid_read_syntax,
|
|
|
2274 list1 (build_string ("Cannot read unreadable object")));
|
|
|
2275 }
|
|
|
2276
|
|
|
2277 default:
|
|
|
2278 {
|
|
|
2279 unreadchar (readcharfun, c);
|
|
|
2280 return Fsignal (Qinvalid_read_syntax,
|
|
|
2281 list1 (build_string ("#")));
|
|
|
2282 }
|
|
|
2283 }
|
|
|
2284 }
|
|
|
2285
|
|
|
2286 /* Quote */
|
|
|
2287 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2288
|
|
|
2289 #ifdef LISP_BACKQUOTES
|
|
|
2290 case '`':
|
|
|
2291 {
|
|
|
2292 Lisp_Object tem;
|
|
|
2293 int speccount = specpdl_depth ();
|
|
|
2294 ++new_backquote_flag;
|
|
|
2295 record_unwind_protect (backquote_unwind,
|
|
|
2296 make_opaque_ptr (&new_backquote_flag));
|
|
|
2297 tem = read0 (readcharfun);
|
|
|
2298 unbind_to (speccount, Qnil);
|
|
|
2299 return list2 (Qbackquote, tem);
|
|
|
2300 }
|
|
|
2301
|
|
|
2302 case ',':
|
|
|
2303 {
|
|
|
2304 if (new_backquote_flag)
|
|
|
2305 {
|
|
|
2306 Lisp_Object comma_type = Qnil;
|
|
|
2307 int ch = readchar (readcharfun);
|
|
|
2308
|
|
|
2309 if (ch == '@')
|
|
|
2310 comma_type = Qcomma_at;
|
|
|
2311 else if (ch == '.')
|
|
|
2312 comma_type = Qcomma_dot;
|
|
|
2313 else
|
|
|
2314 {
|
|
|
2315 if (ch >= 0)
|
|
|
2316 unreadchar (readcharfun, ch);
|
|
|
2317 comma_type = Qcomma;
|
|
|
2318 }
|
|
|
2319 return list2 (comma_type, read0 (readcharfun));
|
|
|
2320 }
|
|
|
2321 else
|
|
|
2322 {
|
|
|
2323 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2324 Thing(tm) is to signal an error here, because it's
|
|
|
2325 really invalid read syntax. Instead, this permits
|
|
|
2326 commas to begin symbols (unless they're inside
|
|
|
2327 backquotes). If an error is signalled here in the
|
|
|
2328 future, then commas should be invalid read syntax
|
|
|
2329 outside of backquotes anywhere they're found (i.e.
|
|
|
2330 they must be quoted in symbols) -- Stig */
|
|
|
2331 return (read_atom (readcharfun, c, 0));
|
|
|
2332 }
|
|
|
2333 }
|
|
|
2334 #endif
|
|
|
2335
|
|
|
2336 case '?':
|
|
|
2337 {
|
|
|
2338 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2339 c = readchar (readcharfun);
|
|
|
2340 if (c < 0)
|
|
|
2341 return Fsignal (Qend_of_file, list1 (readcharfun));
|
|
|
2342
|
|
|
2343 if (c == '\\')
|
|
|
2344 c = read_escape (readcharfun);
|
|
|
2345 return (make_char (c));
|
|
|
2346 }
|
|
|
2347
|
|
|
2348 case '\"':
|
|
|
2349 {
|
|
|
2350 /* String */
|
|
|
2351 #ifdef I18N3
|
|
|
2352 /* #### If the input stream is translating, then the string
|
|
|
2353 should be marked as translatable by setting its
|
|
|
2354 `string-translatable' property to t. .el and .elc files
|
|
|
2355 normally are translating input streams. See Fgettext()
|
|
|
2356 and print_internal(). */
|
|
|
2357 #endif
|
|
|
2358 int cancel = 0;
|
|
|
2359
|
|
|
2360 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2361 while ((c = readchar (readcharfun)) >= 0
|
|
|
2362 && c != '\"')
|
|
|
2363 {
|
|
|
2364 if (c == '\\')
|
|
|
2365 c = read_escape (readcharfun);
|
|
|
2366 /* c is -1 if \ newline has just been seen */
|
|
|
2367 if (c == -1)
|
|
|
2368 {
|
|
|
2369 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2370 cancel = 1;
|
|
|
2371 }
|
|
|
2372 else
|
|
|
2373 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
2374 QUIT;
|
|
|
2375 }
|
|
|
2376 if (c < 0)
|
|
|
2377 return Fsignal (Qend_of_file, list1 (readcharfun));
|
|
|
2378
|
|
|
2379 /* If purifying, and string starts with \ newline,
|
|
|
2380 return zero instead. This is for doc strings
|
|
|
2381 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2382 if (purify_flag && NILP (Vdoc_file_name) && cancel)
|
|
|
2383 return (Qzero);
|
|
|
2384
|
|
|
2385 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2386 #if 0 /* FSFmacs defun hack */
|
|
|
2387 if (read_pure)
|
|
|
2388 return
|
|
|
2389 make_pure_string
|
|
|
2390 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2391 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2392 else
|
|
|
2393 #endif
|
|
|
2394 return
|
|
|
2395 make_string
|
|
|
2396 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2397 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2398 }
|
|
|
2399
|
|
|
2400 default:
|
|
|
2401 {
|
|
|
2402 /* Ignore whitespace and control characters */
|
|
|
2403 if (c <= 040)
|
|
|
2404 goto retry;
|
|
|
2405 return (read_atom (readcharfun, c, 0));
|
|
|
2406 }
|
|
|
2407 }
|
|
|
2408 }
|
|
|
2409
|
|
|
2410
|
|
|
2411
|
|
|
2412 #ifdef LISP_FLOAT_TYPE
|
|
|
2413
|
|
|
2414 #define LEAD_INT 1
|
|
|
2415 #define DOT_CHAR 2
|
|
|
2416 #define TRAIL_INT 4
|
|
|
2417 #define E_CHAR 8
|
|
|
2418 #define EXP_INT 16
|
|
|
2419
|
|
|
2420 int
|
|
|
2421 isfloat_string (CONST char *cp)
|
|
|
2422 {
|
|
|
2423 int state = 0;
|
|
|
2424 CONST Bufbyte *ucp = (CONST Bufbyte *) cp;
|
|
|
2425
|
|
|
2426 if (*ucp == '+' || *ucp == '-')
|
|
|
2427 ucp++;
|
|
|
2428
|
|
|
2429 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2430 {
|
|
|
2431 state |= LEAD_INT;
|
|
|
2432 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2433 ucp++;
|
|
|
2434 }
|
|
|
2435 if (*ucp == '.')
|
|
|
2436 {
|
|
|
2437 state |= DOT_CHAR;
|
|
|
2438 ucp++;
|
|
|
2439 }
|
|
|
2440 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2441 {
|
|
|
2442 state |= TRAIL_INT;
|
|
|
2443 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2444 ucp++;
|
|
|
2445 }
|
|
|
2446 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2447 {
|
|
|
2448 state |= E_CHAR;
|
|
|
2449 ucp++;
|
|
|
2450 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2451 ucp++;
|
|
|
2452 }
|
|
|
2453
|
|
|
2454 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2455 {
|
|
|
2456 state |= EXP_INT;
|
|
|
2457 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2458 ucp++;
|
|
|
2459 }
|
|
|
2460 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2461 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2462 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2463 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2464 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2465 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2466 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2467 }
|
|
|
2468 #endif /* LISP_FLOAT_TYPE */
|
|
|
2469
|
|
|
2470 static void *
|
|
|
2471 sequence_reader (Lisp_Object readcharfun,
|
|
|
2472 Emchar terminator,
|
|
|
2473 void *state,
|
|
|
2474 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2475 void *state, Charcount len))
|
|
|
2476 {
|
|
|
2477 Charcount len;
|
|
|
2478
|
|
|
2479 for (len = 0; ; len++)
|
|
|
2480 {
|
|
|
2481 Emchar ch;
|
|
|
2482
|
|
|
2483 QUIT;
|
|
|
2484 ch = reader_nextchar (readcharfun);
|
|
|
2485
|
|
|
2486 if (ch == terminator)
|
|
|
2487 return (state);
|
|
|
2488 else
|
|
|
2489 unreadchar (readcharfun, ch);
|
|
|
2490 if (ch == ']')
|
|
|
2491 syntax_error ("\"]\" in a list");
|
|
|
2492 else if (ch == ')')
|
|
|
2493 syntax_error ("\")\" in a vector");
|
|
|
2494 state = ((conser) (readcharfun, state, len));
|
|
|
2495 }
|
|
|
2496 }
|
|
|
2497
|
|
|
2498
|
|
|
2499 struct read_list_state
|
|
|
2500 {
|
|
|
2501 Lisp_Object head;
|
|
|
2502 Lisp_Object tail;
|
|
|
2503 int length;
|
|
|
2504 int allow_dotted_lists;
|
|
|
2505 Emchar terminator;
|
|
|
2506 };
|
|
|
2507
|
|
|
2508 static void *
|
|
|
2509 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2510 {
|
|
|
2511 struct read_list_state *s = state;
|
|
|
2512 Lisp_Object elt;
|
|
|
2513
|
|
|
2514 elt = read1 (readcharfun);
|
|
|
2515
|
|
|
2516 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2517 {
|
|
|
2518 Lisp_Object tem = elt;
|
|
|
2519 Emchar ch;
|
|
|
2520
|
|
|
2521 elt = XCDR (elt);
|
|
|
2522 free_cons (XCONS (tem));
|
|
|
2523 tem = Qnil;
|
|
|
2524 ch = XCHAR (elt);
|
|
|
2525 if (ch != '.')
|
|
|
2526 signal_simple_error ("BUG! Internal reader error", elt);
|
|
|
2527 else if (!s->allow_dotted_lists)
|
|
|
2528 syntax_error ("\".\" in a vector");
|
|
|
2529 else
|
|
|
2530 {
|
|
|
2531 if (!NILP (s->tail))
|
|
|
2532 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2533 else
|
|
|
2534 s->head = read0 (readcharfun);
|
|
|
2535 elt = read1 (readcharfun);
|
|
|
2536 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2537 {
|
|
|
2538 ch = XCHAR (XCDR (elt));
|
|
|
2539 free_cons (XCONS (elt));
|
|
|
2540 if (ch == s->terminator)
|
|
|
2541 {
|
|
|
2542 unreadchar (readcharfun, s->terminator);
|
|
|
2543 goto done;
|
|
|
2544 }
|
|
|
2545 }
|
|
|
2546 syntax_error (". in wrong context");
|
|
|
2547 }
|
|
|
2548 }
|
|
|
2549
|
|
|
2550 #if 0 /* FSFmacs defun hack, or something ... */
|
|
|
2551 if (NILP (tail) && defun_hack && EQ (elt, Qdefun) && !read_pure)
|
|
|
2552 {
|
|
|
2553 record_unwind_protect (unreadpure, Qzero);
|
|
|
2554 read_pure = 1;
|
|
|
2555 }
|
|
|
2556 #endif
|
|
|
2557
|
|
|
2558 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2559 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2560 {
|
|
|
2561 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2562 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2563 else
|
|
|
2564 Vcurrent_compiled_function_annotation = elt;
|
|
|
2565 }
|
|
|
2566 #endif
|
|
|
2567
|
|
|
2568 elt = Fcons (elt, Qnil);
|
|
|
2569 if (!NILP (s->tail))
|
|
|
2570 XCDR (s->tail) = elt;
|
|
|
2571 else
|
|
|
2572 s->head = elt;
|
|
|
2573 s->tail = elt;
|
|
|
2574 done:
|
|
|
2575 s->length++;
|
|
|
2576 return (s);
|
|
|
2577 }
|
|
|
2578
|
|
|
2579
|
|
|
2580 #if 0 /* FSFmacs defun hack */
|
|
|
2581 /* -1 for allow_dotted_lists means allow_dotted_lists and check
|
|
|
2582 for starting with defun and make structure pure. */
|
|
|
2583 #endif
|
|
|
2584
|
|
|
2585 static Lisp_Object
|
|
|
2586 read_list (Lisp_Object readcharfun,
|
|
|
2587 Emchar terminator,
|
|
|
2588 int allow_dotted_lists,
|
|
|
2589 int check_for_doc_references)
|
|
|
2590 {
|
|
|
2591 struct read_list_state s;
|
|
|
2592 struct gcpro gcpro1, gcpro2;
|
|
|
2593 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2594 Lisp_Object old_compiled_function_annotation =
|
|
|
2595 Vcurrent_compiled_function_annotation;
|
|
|
2596 #endif
|
|
|
2597
|
|
|
2598 s.head = Qnil;
|
|
|
2599 s.tail = Qnil;
|
|
|
2600 s.length = 0;
|
|
|
2601 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2602 s.terminator = terminator;
|
|
|
2603 GCPRO2 (s.head, s.tail);
|
|
|
2604
|
|
|
2605 (void) sequence_reader (readcharfun,
|
|
|
2606 terminator,
|
|
|
2607 &s,
|
|
|
2608 read_list_conser);
|
|
|
2609 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2610 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2611 #endif
|
|
|
2612
|
|
|
2613 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2614 {
|
|
|
2615 /* check now for any doc string references and record them
|
|
|
2616 for later. */
|
|
|
2617 Lisp_Object tail;
|
|
|
2618
|
|
|
2619 /* We might be dealing with an imperfect list so don't
|
|
|
2620 use LIST_LOOP */
|
|
|
2621 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2622 {
|
|
|
2623 Lisp_Object holding_cons = Qnil;
|
|
|
2624
|
|
|
2625 {
|
|
|
2626 Lisp_Object elem = XCAR (tail);
|
|
|
2627 /* elem might be (#$ . INT) ... */
|
|
|
2628 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2629 holding_cons = tail;
|
|
|
2630 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2631 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2632 `autoload' (autoload evaluates its arguments, while
|
|
|
2633 `defvar', `defun', etc. don't). */
|
|
|
2634 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2635 && CONSP (XCDR (elem)))
|
|
|
2636 {
|
|
|
2637 elem = XCAR (XCDR (elem));
|
|
|
2638 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2639 holding_cons = XCDR (XCAR (tail));
|
|
|
2640 }
|
|
|
2641 }
|
|
|
2642
|
|
|
2643 if (CONSP (holding_cons))
|
|
|
2644 {
|
|
|
2645 if (purify_flag)
|
|
|
2646 {
|
|
|
2647 if (NILP (Vdoc_file_name))
|
|
|
2648 /* We have not yet called Snarf-documentation, so
|
|
16
|
2649 assume this file is described in the DOC file
|
|
|
2650 and Snarf-documentation will fill in the right
|
|
|
2651 value later. For now, replace the whole list
|
|
|
2652 with 0. */
|
|
0
|
2653 XCAR (holding_cons) = Qzero;
|
|
|
2654 else
|
|
|
2655 /* We have already called Snarf-documentation, so
|
|
|
2656 make a relative file name for this file, so it
|
|
|
2657 can be found properly in the installed Lisp
|
|
|
2658 directory. We don't use Fexpand_file_name
|
|
|
2659 because that would make the directory absolute
|
|
|
2660 now. */
|
|
|
2661 XCAR (XCAR (holding_cons)) =
|
|
|
2662 concat2 (build_string ("../lisp/"),
|
|
|
2663 Ffile_name_nondirectory
|
|
|
2664 (Vload_file_name_internal));
|
|
|
2665 }
|
|
|
2666 else
|
|
|
2667 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2668 and the string will be filled in properly in
|
|
|
2669 load_force_doc_string_unwind(). */
|
|
|
2670 Vload_force_doc_string_list =
|
|
|
2671 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2672 can modify it in-place. */
|
|
|
2673 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2674 }
|
|
|
2675 }
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 UNGCPRO;
|
|
|
2679 return (s.head);
|
|
|
2680 }
|
|
|
2681
|
|
|
2682 static Lisp_Object
|
|
|
2683 read_vector (Lisp_Object readcharfun,
|
|
|
2684 Emchar terminator)
|
|
|
2685 {
|
|
|
2686 Lisp_Object tem;
|
|
|
2687 Lisp_Object *p;
|
|
|
2688 int len;
|
|
|
2689 int i;
|
|
|
2690 struct read_list_state s;
|
|
|
2691 struct gcpro gcpro1, gcpro2;
|
|
|
2692
|
|
|
2693
|
|
|
2694 s.head = Qnil;
|
|
|
2695 s.tail = Qnil;
|
|
|
2696 s.length = 0;
|
|
|
2697 s.allow_dotted_lists = 0;
|
|
|
2698 GCPRO2 (s.head, s.tail);
|
|
|
2699
|
|
|
2700 (void) sequence_reader (readcharfun,
|
|
|
2701 terminator,
|
|
|
2702 &s,
|
|
|
2703 read_list_conser);
|
|
|
2704 UNGCPRO;
|
|
|
2705 tem = s.head;
|
|
|
2706 len = XINT (Flength (tem));
|
|
|
2707
|
|
|
2708 #if 0 /* FSFmacs defun hack */
|
|
|
2709 if (read_pure)
|
|
|
2710 s.head = make_pure_vector (len, Qnil);
|
|
|
2711 else
|
|
|
2712 #endif
|
|
|
2713 s.head = make_vector (len, Qnil);
|
|
|
2714
|
|
|
2715 for (i = 0, p = &(vector_data (XVECTOR (s.head))[0]);
|
|
|
2716 i < len;
|
|
|
2717 i++, p++)
|
|
|
2718 {
|
|
|
2719 struct Lisp_Cons *otem = XCONS (tem);
|
|
|
2720 #if 0 /* FSFmacs defun hack */
|
|
|
2721 if (read_pure)
|
|
|
2722 tem = Fpurecopy (Fcar (tem));
|
|
|
2723 else
|
|
|
2724 #endif
|
|
|
2725 tem = Fcar (tem);
|
|
|
2726 *p = tem;
|
|
|
2727 tem = otem->cdr;
|
|
|
2728 free_cons (otem);
|
|
|
2729 }
|
|
|
2730 return (s.head);
|
|
|
2731 }
|
|
|
2732
|
|
|
2733 static Lisp_Object
|
|
|
2734 read_compiled_function (Lisp_Object readcharfun, Emchar terminator)
|
|
|
2735 {
|
|
|
2736 /* Accept compiled functions at read-time so that we don't
|
|
|
2737 have to build them at load-time. */
|
|
|
2738 Lisp_Object stuff;
|
|
|
2739 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
2740 struct gcpro gcpro1;
|
|
|
2741 int len;
|
|
|
2742 int iii;
|
|
|
2743 int saw_a_doc_ref = 0;
|
|
|
2744
|
|
|
2745 /* Note: we tell read_list not to search for doc references
|
|
|
2746 because we need to handle the "doc reference" for the
|
|
|
2747 instructions and constants differently. */
|
|
|
2748 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
2749 len = XINT (Flength (stuff));
|
|
|
2750 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
2751 return
|
|
|
2752 continuable_syntax_error ("#[...] used with wrong number of elements");
|
|
|
2753
|
|
|
2754 for (iii = 0; CONSP (stuff); iii++)
|
|
|
2755 {
|
|
|
2756 struct Lisp_Cons *victim = XCONS (stuff);
|
|
|
2757 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
2758 if ((purify_flag || load_force_doc_strings)
|
|
|
2759 && CONSP (make_byte_code_args[iii])
|
|
|
2760 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
2761 {
|
|
|
2762 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
2763 {
|
|
|
2764 /* same as in read_list(). */
|
|
|
2765 if (NILP (Vdoc_file_name))
|
|
|
2766 make_byte_code_args[iii] = Qzero;
|
|
|
2767 else
|
|
|
2768 XCAR (make_byte_code_args[iii]) =
|
|
|
2769 concat2 (build_string ("../lisp/"),
|
|
|
2770 Ffile_name_nondirectory
|
|
|
2771 (Vload_file_name_internal));
|
|
|
2772 }
|
|
|
2773 else
|
|
|
2774 saw_a_doc_ref = 1;
|
|
|
2775 }
|
|
|
2776 stuff = Fcdr (stuff);
|
|
|
2777 free_cons (victim);
|
|
|
2778 }
|
|
|
2779 GCPRO1 (make_byte_code_args[0]);
|
|
|
2780 gcpro1.nvars = len;
|
|
|
2781
|
|
|
2782 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
2783 * value as our "read-pure" argument */
|
|
|
2784 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
|
2785 if (saw_a_doc_ref)
|
|
|
2786 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
2787 UNGCPRO;
|
|
|
2788 return stuff;
|
|
|
2789 }
|
|
|
2790
|
|
|
2791
|
|
|
2792
|
|
|
2793 void
|
|
|
2794 init_lread (void)
|
|
|
2795 {
|
|
|
2796 #ifdef PATH_LOADSEARCH
|
|
|
2797 CONST char *normal = PATH_LOADSEARCH;
|
|
|
2798
|
|
|
2799 /* Don't print this warning. If the hardcoded paths don't exist, then
|
|
|
2800 startup.el will try and deduce one. If it fails, it knows how to
|
|
|
2801 handle things. */
|
|
|
2802 #if 0
|
|
|
2803 #ifndef WINDOWSNT
|
|
|
2804 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
|
|
|
2805 almost never correct, thereby causing a warning to be printed out that
|
|
|
2806 confuses users. Since PATH_LOADSEARCH is always overriden by the
|
|
|
2807 EMACSLOADPATH environment variable below, disable the warning on NT. */
|
|
|
2808
|
|
|
2809 /* Warn if dirs in the *standard* path don't exist. */
|
|
|
2810 if (!turn_off_warning)
|
|
|
2811 {
|
|
|
2812 Lisp_Object normal_path = decode_env_path (0, normal);
|
|
|
2813 for (; !NILP (normal_path); normal_path = XCDR (normal_path))
|
|
|
2814 {
|
|
|
2815 Lisp_Object dirfile;
|
|
|
2816 dirfile = Fcar (normal_path);
|
|
|
2817 if (!NILP (dirfile))
|
|
|
2818 {
|
|
|
2819 dirfile = Fdirectory_file_name (dirfile);
|
|
16
|
2820 if (access ((char *) XSTRING_DATA (dirfile), 0) < 0)
|
|
0
|
2821 stdout_out ("Warning: lisp library (%s) does not exist.\n",
|
|
16
|
2822 XSTRING_DATA (Fcar (normal_path)));
|
|
0
|
2823 }
|
|
|
2824 }
|
|
|
2825 }
|
|
|
2826 #endif /* WINDOWSNT */
|
|
|
2827 #endif /* 0 */
|
|
|
2828 #else /* !PATH_LOADSEARCH */
|
|
|
2829 CONST char *normal = 0;
|
|
|
2830 #endif /* !PATH_LOADSEARCH */
|
|
|
2831 Vvalues = Qnil;
|
|
|
2832
|
|
|
2833 /* further frobbed by startup.el if nil. */
|
|
|
2834 Vload_path = decode_env_path ("EMACSLOADPATH", normal);
|
|
|
2835
|
|
|
2836 /* Vdump_load_path = Qnil; */
|
|
|
2837 #ifndef CANNOT_DUMP
|
|
|
2838 if (purify_flag && NILP (Vload_path))
|
|
|
2839 {
|
|
|
2840 /* loadup.el will frob this some more. */
|
|
|
2841 /* #### unix-specific */
|
|
|
2842 Vload_path = Fcons (build_string ("../lisp/prim"), Vload_path);
|
|
|
2843 }
|
|
|
2844 #endif /* not CANNOT_DUMP */
|
|
|
2845 load_in_progress = 0;
|
|
|
2846
|
|
|
2847 Vload_descriptor_list = Qnil;
|
|
|
2848
|
|
|
2849 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
|
2850
|
|
|
2851 Vload_force_doc_string_list = Qnil;
|
|
|
2852 }
|
|
|
2853
|
|
|
2854 void
|
|
|
2855 syms_of_lread (void)
|
|
|
2856 {
|
|
|
2857 defsubr (&Sread);
|
|
|
2858 defsubr (&Sread_from_string);
|
|
|
2859 defsubr (&Sload_internal);
|
|
|
2860 defsubr (&Slocate_file);
|
|
|
2861 defsubr (&Slocate_file_clear_hashing);
|
|
|
2862 defsubr (&Seval_buffer);
|
|
|
2863 defsubr (&Seval_region);
|
|
|
2864 #ifdef standalone
|
|
|
2865 defsubr (&Sread_char);
|
|
|
2866 #endif
|
|
|
2867
|
|
|
2868 defsymbol (&Qstandard_input, "standard-input");
|
|
|
2869 defsymbol (&Qread_char, "read-char");
|
|
|
2870 defsymbol (&Qcurrent_load_list, "current-load-list");
|
|
|
2871 defsymbol (&Qload, "load");
|
|
|
2872 defsymbol (&Qload_file_name, "load-file-name");
|
|
|
2873 defsymbol (&Qlocate_file_hash_table, "locate-file-hash-table");
|
|
|
2874 defsymbol (&Qfset, "fset");
|
|
|
2875
|
|
|
2876 #ifdef LISP_BACKQUOTES
|
|
|
2877 defsymbol (&Qbackquote, "backquote");
|
|
|
2878 defsymbol (&Qbacktick, "`");
|
|
|
2879 defsymbol (&Qcomma, ",");
|
|
|
2880 defsymbol (&Qcomma_at, ",@");
|
|
|
2881 defsymbol (&Qcomma_dot, ",.");
|
|
|
2882 #endif
|
|
|
2883 }
|
|
|
2884
|
|
|
2885 void
|
|
|
2886 structure_type_create (void)
|
|
|
2887 {
|
|
|
2888 the_structure_type_dynarr = Dynarr_new (struct structure_type);
|
|
|
2889 }
|
|
|
2890
|
|
|
2891 void
|
|
|
2892 vars_of_lread (void)
|
|
|
2893 {
|
|
|
2894 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
2895 List of values of all expressions which were read, evaluated and printed.
|
|
|
2896 Order is reverse chronological.
|
|
|
2897 */ );
|
|
|
2898
|
|
|
2899 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
2900 Stream for read to get input from.
|
|
|
2901 See documentation of `read' for possible values.
|
|
|
2902 */ );
|
|
|
2903 Vstandard_input = Qt;
|
|
|
2904
|
|
|
2905 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
2906 *List of directories to search for files to load.
|
|
|
2907 Each element is a string (directory name) or nil (try default directory).
|
|
|
2908
|
|
|
2909 Note that the elements of this list *may not* begin with \"~\", so you must
|
|
|
2910 call `expand-file-name' on them before adding them to this list.
|
|
|
2911
|
|
|
2912 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
2913 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
2914 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
2915 value for this variable by looking around in the file-system near the
|
|
|
2916 directory in which the XEmacs executable resides.
|
|
|
2917 */ );
|
|
|
2918
|
|
|
2919 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
2920 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
2921
|
|
|
2922 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
2923 Non-nil iff inside of `load'.
|
|
|
2924 */ );
|
|
|
2925
|
|
|
2926 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
2927 An alist of expressions to be evalled when particular files are loaded.
|
|
|
2928 Each element looks like (FILENAME FORMS...).
|
|
|
2929 When `load' is run and the file-name argument is FILENAME,
|
|
|
2930 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
2931
|
|
|
2932 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
2933 with no directory specified, since that is how `load' is normally called.
|
|
|
2934 An error in FORMS does not undo the load,
|
|
|
2935 but does prevent execution of the rest of the FORMS.
|
|
|
2936 */ );
|
|
|
2937 Vafter_load_alist = Qnil;
|
|
|
2938
|
|
|
2939 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
2940 *Whether `load' should check whether the source is newer than the binary.
|
|
|
2941 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
2942 corresponding `.el' is newer, a warning message will be printed.
|
|
|
2943 */ );
|
|
|
2944 load_warn_when_source_newer = 0;
|
|
|
2945
|
|
|
2946 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
2947 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
2948 If this variable is true, then when `load' is called with a filename without
|
|
|
2949 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
2950 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
2951 no warning will be printed.
|
|
|
2952 */ );
|
|
|
2953 load_warn_when_source_only = 0;
|
|
|
2954
|
|
|
2955 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
2956 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
2957 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
2958 */ );
|
|
|
2959 load_ignore_elc_files = 0;
|
|
|
2960
|
|
|
2961 #ifdef LOADHIST
|
|
|
2962 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
2963 Alist mapping source file names to symbols and features.
|
|
|
2964 Each alist element is a list that starts with a file name,
|
|
|
2965 except for one element (optional) that starts with nil and describes
|
|
|
2966 definitions evaluated from buffers not visiting files.
|
|
|
2967 The remaining elements of each list are symbols defined as functions
|
|
|
2968 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
2969 */ );
|
|
|
2970 Vload_history = Qnil;
|
|
|
2971
|
|
|
2972 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
2973 Used for internal purposes by `load'.
|
|
|
2974 */ );
|
|
|
2975 Vcurrent_load_list = Qnil;
|
|
|
2976 #endif
|
|
|
2977
|
|
|
2978 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
2979 Full name of file being loaded by `load'.
|
|
|
2980 */ );
|
|
|
2981 Vload_file_name = Qnil;
|
|
|
2982
|
|
|
2983 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
2984 "Function used by `load' and `eval-region' for reading expressions.
|
|
|
2985 The default is nil, which means use the function `read'.
|
|
|
2986 */ );
|
|
|
2987 Vload_read_function = Qnil;
|
|
|
2988
|
|
|
2989 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
2990 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
2991 This is useful when the file being loaded is a temporary copy.
|
|
|
2992 */ );
|
|
|
2993 load_force_doc_strings = 0;
|
|
|
2994
|
|
|
2995 DEFVAR_LISP ("source-directory", &Vsource_directory /*
|
|
|
2996 Directory in which XEmacs sources were found when XEmacs was built.
|
|
|
2997 You cannot count on them to still be there!
|
|
|
2998 */ );
|
|
|
2999 Vsource_directory = Qnil;
|
|
|
3000
|
|
|
3001 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes", &puke_on_fsf_keys /*
|
|
|
3002 Whether `read' should signal an error when it encounters unsupported
|
|
|
3003 character escape syntaxes or just read them incorrectly.
|
|
|
3004 */ );
|
|
|
3005 puke_on_fsf_keys = 0;
|
|
|
3006
|
|
|
3007 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3008 with values saved when the image is dumped. */
|
|
|
3009 staticpro (&Vload_descriptor_list);
|
|
|
3010
|
|
|
3011 /* This gets initialized in init_lread because all streams get closed
|
|
|
3012 when dumping occurs */
|
|
|
3013 staticpro (&Vread_buffer_stream);
|
|
|
3014
|
|
|
3015 /* Initialized in init_lread. */
|
|
|
3016 staticpro (&Vload_force_doc_string_list);
|
|
|
3017
|
|
|
3018 Vload_file_name_internal = Qnil;
|
|
|
3019 staticpro (&Vload_file_name_internal);
|
|
|
3020
|
|
|
3021 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3022 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3023
|
|
|
3024 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3025 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3026 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3027 #endif
|
|
|
3028
|
|
|
3029 /* So that early-early stuff will work */
|
|
|
3030 Ffset (Qload, intern ("load-internal"));
|
|
|
3031
|
|
|
3032 #ifdef LISP_BACKQUOTES
|
|
|
3033 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3034 #endif
|
|
|
3035
|
|
|
3036 #ifdef I18N3
|
|
|
3037 Vfile_domain = Qnil;
|
|
|
3038 #endif
|
|
|
3039 }
|
