Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
114f9c96 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
078e7b4a | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
078e7b4a JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
078e7b4a JB |
20 | |
21 | ||
98280b76 | 22 | #include <config.h> |
078e7b4a JB |
23 | #include <stdio.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/file.h> | |
2c1b5dbe | 27 | #include <errno.h> |
b3e6f69c | 28 | #include <setjmp.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
1571601b | 32 | #include "character.h" |
fe0e03f3 | 33 | #include "charset.h" |
8792be66 | 34 | #include "coding.h" |
57bda87a | 35 | #include <epaths.h> |
078e7b4a | 36 | #include "commands.h" |
e37c0805 | 37 | #include "keyboard.h" |
428a555e | 38 | #include "frame.h" |
7bd279cd | 39 | #include "termhooks.h" |
eb191db2 | 40 | #include "coding.h" |
66cd0949 | 41 | #include "blockinput.h" |
078e7b4a | 42 | |
79051982 | 43 | #ifdef MSDOS |
79051982 RS |
44 | #include "msdos.h" |
45 | #endif | |
46 | ||
c1a2f60a AS |
47 | #ifdef HAVE_UNISTD_H |
48 | #include <unistd.h> | |
49 | #endif | |
50 | ||
078e7b4a | 51 | #include <math.h> |
078e7b4a | 52 | |
c011e9a5 RS |
53 | #ifdef HAVE_SETLOCALE |
54 | #include <locale.h> | |
55 | #endif /* HAVE_SETLOCALE */ | |
56 | ||
bcdec28b DL |
57 | #ifdef HAVE_FCNTL_H |
58 | #include <fcntl.h> | |
59 | #endif | |
f7d279f0 RS |
60 | #ifndef O_RDONLY |
61 | #define O_RDONLY 0 | |
62 | #endif | |
63 | ||
79cf851c | 64 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
65 | #define file_offset off_t |
66 | #define file_tell ftello | |
67 | #else | |
68 | #define file_offset long | |
69 | #define file_tell ftell | |
70 | #endif | |
71 | ||
f19a0f5b TZ |
72 | /* hash table read constants */ |
73 | Lisp_Object Qhash_table, Qdata; | |
74 | Lisp_Object Qtest, Qsize; | |
75 | Lisp_Object Qweakness; | |
76 | Lisp_Object Qrehash_size; | |
77 | Lisp_Object Qrehash_threshold; | |
78 | extern Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; | |
79 | ||
8a1f1537 | 80 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 81 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 82 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 83 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 84 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 85 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
6bb6da3e | 86 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 87 | |
8792be66 KH |
88 | /* Used instead of Qget_file_char while loading *.elc files compiled |
89 | by Emacs 21 or older. */ | |
90 | static Lisp_Object Qget_emacs_mule_file_char; | |
91 | ||
92 | static Lisp_Object Qload_force_doc_strings; | |
93 | ||
7bd279cd | 94 | extern Lisp_Object Qevent_symbol_element_mask; |
74549846 | 95 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 96 | |
e0f24100 | 97 | /* non-zero if inside `load' */ |
078e7b4a | 98 | int load_in_progress; |
2baf5e76 | 99 | static Lisp_Object Qload_in_progress; |
ece435a5 | 100 | |
1521a8fa RS |
101 | /* Directory in which the sources were found. */ |
102 | Lisp_Object Vsource_directory; | |
103 | ||
e61b9b87 | 104 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 105 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 106 | |
4116ab9f KH |
107 | /* File name of user's init file. */ |
108 | Lisp_Object Vuser_init_file; | |
109 | ||
ae321d28 RS |
110 | /* This is the user-visible association list that maps features to |
111 | lists of defs in their load files. */ | |
112 | Lisp_Object Vload_history; | |
113 | ||
20ea2964 | 114 | /* This is used to build the load history. */ |
ae321d28 RS |
115 | Lisp_Object Vcurrent_load_list; |
116 | ||
4b104c41 RS |
117 | /* List of files that were preloaded. */ |
118 | Lisp_Object Vpreloaded_file_list; | |
119 | ||
20ea2964 RS |
120 | /* Name of file actually being read by `load'. */ |
121 | Lisp_Object Vload_file_name; | |
122 | ||
84a15045 RS |
123 | /* Function to use for reading, in `load' and friends. */ |
124 | Lisp_Object Vload_read_function; | |
125 | ||
91f68422 CY |
126 | /* Non-nil means read recursive structures using #n= and #n# syntax. */ |
127 | Lisp_Object Vread_circle; | |
128 | ||
4ad679f9 EN |
129 | /* The association list of objects read with the #n=object form. |
130 | Each member of the list has the form (n . object), and is used to | |
131 | look up the object for the corresponding #n# construct. | |
132 | It must be set to nil before all top-level calls to read0. */ | |
133 | Lisp_Object read_objects; | |
134 | ||
b2a30870 RS |
135 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
136 | static int load_force_doc_strings; | |
137 | ||
94e554db RS |
138 | /* Nonzero means read should convert strings to unibyte. */ |
139 | static int load_convert_to_unibyte; | |
140 | ||
8792be66 KH |
141 | /* Nonzero means READCHAR should read bytes one by one (not character) |
142 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
143 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
144 | static int load_each_byte; | |
145 | ||
9b33a603 | 146 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
147 | compiled) instead of readevalloop. */ |
148 | Lisp_Object Vload_source_file_function; | |
149 | ||
1ffcc3b1 DL |
150 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
151 | Lisp_Object Vbyte_boolean_vars; | |
152 | ||
abb13b09 CW |
153 | /* Whether or not to add a `read-positions' property to symbols |
154 | read. */ | |
155 | Lisp_Object Vread_with_symbol_positions; | |
156 | ||
157 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
158 | Lisp_Object Vread_symbol_positions_list; | |
159 | ||
d2c6be7f RS |
160 | /* List of descriptors now open for Fload. */ |
161 | static Lisp_Object load_descriptor_list; | |
162 | ||
b2a30870 | 163 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
164 | static FILE *instream; |
165 | ||
166 | /* When nonzero, read conses in pure space */ | |
167 | static int read_pure; | |
168 | ||
b2a30870 | 169 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 170 | static int read_from_string_index; |
bed23cb2 | 171 | static int read_from_string_index_byte; |
078e7b4a | 172 | static int read_from_string_limit; |
17634846 | 173 | |
abb13b09 CW |
174 | /* Number of characters read in the current call to Fread or |
175 | Fread_from_string. */ | |
176 | static int readchar_count; | |
6f7f43d5 | 177 | |
c15cfd1f | 178 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
179 | static char *saved_doc_string; |
180 | /* Length of buffer allocated in saved_doc_string. */ | |
181 | static int saved_doc_string_size; | |
182 | /* Length of actual data in saved_doc_string. */ | |
183 | static int saved_doc_string_length; | |
184 | /* This is the file position that string came from. */ | |
68c45bf0 | 185 | static file_offset saved_doc_string_position; |
b2a30870 | 186 | |
c15cfd1f RS |
187 | /* This contains the previous string skipped with #@. |
188 | We copy it from saved_doc_string when a new string | |
189 | is put in saved_doc_string. */ | |
190 | static char *prev_saved_doc_string; | |
191 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
192 | static int prev_saved_doc_string_size; | |
193 | /* Length of actual data in prev_saved_doc_string. */ | |
194 | static int prev_saved_doc_string_length; | |
195 | /* This is the file position that string came from. */ | |
68c45bf0 | 196 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 197 | |
17634846 RS |
198 | /* Nonzero means inside a new-style backquote |
199 | with no surrounding parentheses. | |
200 | Fread initializes this to zero, so we need not specbind it | |
201 | or worry about what happens to it when there is an error. */ | |
202 | static int new_backquote_flag; | |
1d064697 | 203 | static Lisp_Object Vold_style_backquotes, Qold_style_backquotes; |
7ee3bd7b GM |
204 | |
205 | /* A list of file names for files being loaded in Fload. Used to | |
206 | check for recursive loads. */ | |
207 | ||
9942fa0c | 208 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 209 | |
550a625e GM |
210 | /* Non-zero means load dangerous compiled Lisp files. */ |
211 | ||
212 | int load_dangerous_libraries; | |
213 | ||
beb0b7f9 EZ |
214 | /* Non-zero means force printing messages when loading Lisp files. */ |
215 | ||
216 | int force_load_messages; | |
217 | ||
550a625e GM |
218 | /* A regular expression used to detect files compiled with Emacs. */ |
219 | ||
220 | static Lisp_Object Vbytecomp_version_regexp; | |
221 | ||
f57e2426 J |
222 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
223 | Lisp_Object); | |
8792be66 | 224 | |
f57e2426 J |
225 | static void readevalloop (Lisp_Object, FILE*, Lisp_Object, |
226 | Lisp_Object (*) (), int, | |
227 | Lisp_Object, Lisp_Object, | |
228 | Lisp_Object, Lisp_Object); | |
229 | static Lisp_Object load_unwind (Lisp_Object); | |
230 | static Lisp_Object load_descriptor_unwind (Lisp_Object); | |
550a625e | 231 | |
f57e2426 | 232 | static void invalid_syntax (const char *, int) NO_RETURN; |
971de7fb | 233 | static void end_of_file_error (void) NO_RETURN; |
336d4a9c | 234 | |
078e7b4a | 235 | \f |
8792be66 KH |
236 | /* Functions that read one byte from the current source READCHARFUN |
237 | or unreads one byte. If the integer argument C is -1, it returns | |
238 | one read byte, or -1 when there's no more byte in the source. If C | |
239 | is 0 or positive, it unreads C, and the return value is not | |
240 | interesting. */ | |
241 | ||
f57e2426 J |
242 | static int readbyte_for_lambda (int, Lisp_Object); |
243 | static int readbyte_from_file (int, Lisp_Object); | |
244 | static int readbyte_from_string (int, Lisp_Object); | |
8792be66 | 245 | |
078e7b4a JB |
246 | /* Handle unreading and rereading of characters. |
247 | Write READCHAR to read a character, | |
fe0e03f3 KH |
248 | UNREAD(c) to unread c to be read again. |
249 | ||
8792be66 | 250 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 251 | |
1202434b | 252 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
253 | #define UNREAD(c) unreadchar (readcharfun, c) |
254 | ||
1202434b KH |
255 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
256 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
257 | ||
8792be66 | 258 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
259 | Qlambda, or a cons, we use this to keep an unread character because |
260 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
261 | means that there's no unread character. */ |
262 | static int unread_char; | |
263 | ||
078e7b4a | 264 | static int |
971de7fb | 265 | readchar (Lisp_Object readcharfun, int *multibyte) |
078e7b4a JB |
266 | { |
267 | Lisp_Object tem; | |
95384e1e | 268 | register int c; |
f57e2426 | 269 | int (*readbyte) (int, Lisp_Object); |
8792be66 KH |
270 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; |
271 | int i, len; | |
272 | int emacs_mule_encoding = 0; | |
078e7b4a | 273 | |
1202434b KH |
274 | if (multibyte) |
275 | *multibyte = 0; | |
276 | ||
abb13b09 | 277 | readchar_count++; |
177c0ea7 | 278 | |
cfff016d | 279 | if (BUFFERP (readcharfun)) |
078e7b4a | 280 | { |
bed23cb2 | 281 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 282 | |
bed23cb2 | 283 | int pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 284 | |
bed23cb2 RS |
285 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
286 | return -1; | |
078e7b4a | 287 | |
bed23cb2 RS |
288 | if (! NILP (inbuffer->enable_multibyte_characters)) |
289 | { | |
00a9a935 | 290 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
291 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
292 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 293 | c = STRING_CHAR (p); |
1202434b KH |
294 | if (multibyte) |
295 | *multibyte = 1; | |
bed23cb2 RS |
296 | } |
297 | else | |
298 | { | |
299 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
300 | if (! ASCII_BYTE_P (c)) |
301 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 302 | pt_byte++; |
6f7f43d5 | 303 | } |
bed23cb2 | 304 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 305 | |
bed23cb2 | 306 | return c; |
078e7b4a | 307 | } |
cfff016d | 308 | if (MARKERP (readcharfun)) |
078e7b4a | 309 | { |
bed23cb2 | 310 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 311 | |
bed23cb2 | 312 | int bytepos = marker_byte_position (readcharfun); |
00a9a935 | 313 | |
bed23cb2 RS |
314 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
315 | return -1; | |
6f7f43d5 | 316 | |
bed23cb2 RS |
317 | if (! NILP (inbuffer->enable_multibyte_characters)) |
318 | { | |
00a9a935 | 319 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
320 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
321 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 322 | c = STRING_CHAR (p); |
1202434b KH |
323 | if (multibyte) |
324 | *multibyte = 1; | |
bed23cb2 RS |
325 | } |
326 | else | |
327 | { | |
328 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
329 | if (! ASCII_BYTE_P (c)) |
330 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 331 | bytepos++; |
6f7f43d5 RS |
332 | } |
333 | ||
bed23cb2 RS |
334 | XMARKER (readcharfun)->bytepos = bytepos; |
335 | XMARKER (readcharfun)->charpos++; | |
336 | ||
337 | return c; | |
078e7b4a | 338 | } |
ad0153e4 RS |
339 | |
340 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
341 | { |
342 | readbyte = readbyte_for_lambda; | |
343 | goto read_multibyte; | |
344 | } | |
ad0153e4 | 345 | |
078e7b4a | 346 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 347 | { |
8792be66 KH |
348 | readbyte = readbyte_from_file; |
349 | goto read_multibyte; | |
2c1b5dbe | 350 | } |
078e7b4a | 351 | |
cfff016d | 352 | if (STRINGP (readcharfun)) |
078e7b4a | 353 | { |
bed23cb2 | 354 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 355 | c = -1; |
1202434b KH |
356 | else if (STRING_MULTIBYTE (readcharfun)) |
357 | { | |
358 | if (multibyte) | |
359 | *multibyte = 1; | |
360 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
361 | read_from_string_index, | |
362 | read_from_string_index_byte); | |
363 | } | |
f0354c03 | 364 | else |
1202434b KH |
365 | { |
366 | c = SREF (readcharfun, read_from_string_index_byte); | |
367 | read_from_string_index++; | |
368 | read_from_string_index_byte++; | |
369 | } | |
078e7b4a JB |
370 | return c; |
371 | } | |
372 | ||
8792be66 KH |
373 | if (CONSP (readcharfun)) |
374 | { | |
375 | /* This is the case that read_vector is reading from a unibyte | |
376 | string that contains a byte sequence previously skipped | |
377 | because of #@NUMBER. The car part of readcharfun is that | |
378 | string, and the cdr part is a value of readcharfun given to | |
379 | read_vector. */ | |
380 | readbyte = readbyte_from_string; | |
381 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
382 | emacs_mule_encoding = 1; | |
383 | goto read_multibyte; | |
384 | } | |
8f924df7 | 385 | |
8792be66 KH |
386 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
387 | { | |
388 | readbyte = readbyte_from_file; | |
389 | emacs_mule_encoding = 1; | |
390 | goto read_multibyte; | |
391 | } | |
078e7b4a JB |
392 | |
393 | tem = call0 (readcharfun); | |
394 | ||
265a9e55 | 395 | if (NILP (tem)) |
078e7b4a JB |
396 | return -1; |
397 | return XINT (tem); | |
8792be66 KH |
398 | |
399 | read_multibyte: | |
400 | if (unread_char >= 0) | |
401 | { | |
402 | c = unread_char; | |
403 | unread_char = -1; | |
404 | return c; | |
405 | } | |
406 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
407 | if (c < 0 || load_each_byte) |
408 | return c; | |
409 | if (multibyte) | |
410 | *multibyte = 1; | |
411 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
412 | return c; |
413 | if (emacs_mule_encoding) | |
414 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
415 | i = 0; | |
416 | buf[i++] = c; | |
417 | len = BYTES_BY_CHAR_HEAD (c); | |
418 | while (i < len) | |
419 | { | |
420 | c = (*readbyte) (-1, readcharfun); | |
421 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
422 | { | |
423 | while (--i > 1) | |
424 | (*readbyte) (buf[i], readcharfun); | |
425 | return BYTE8_TO_CHAR (buf[0]); | |
426 | } | |
427 | buf[i++] = c; | |
428 | } | |
62a6e103 | 429 | return STRING_CHAR (buf); |
078e7b4a JB |
430 | } |
431 | ||
432 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
433 | If the stream is a user function, call it with the char as argument. */ | |
434 | ||
435 | static void | |
971de7fb | 436 | unreadchar (Lisp_Object readcharfun, int c) |
078e7b4a | 437 | { |
abb13b09 | 438 | readchar_count--; |
92fddec9 KH |
439 | if (c == -1) |
440 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
441 | since readchar didn't advance it when we read it. */ | |
442 | ; | |
cfff016d | 443 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 444 | { |
bed23cb2 RS |
445 | struct buffer *b = XBUFFER (readcharfun); |
446 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 447 | |
8792be66 KH |
448 | BUF_PT (b)--; |
449 | if (! NILP (b->enable_multibyte_characters)) | |
450 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 451 | else |
8792be66 | 452 | bytepos--; |
d7760ca9 | 453 | |
8792be66 | 454 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 455 | } |
cfff016d | 456 | else if (MARKERP (readcharfun)) |
d7760ca9 | 457 | { |
bed23cb2 RS |
458 | struct buffer *b = XMARKER (readcharfun)->buffer; |
459 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 460 | |
8792be66 KH |
461 | XMARKER (readcharfun)->charpos--; |
462 | if (! NILP (b->enable_multibyte_characters)) | |
463 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 464 | else |
8792be66 | 465 | bytepos--; |
d7760ca9 | 466 | |
8792be66 | 467 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 468 | } |
cfff016d | 469 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
470 | { |
471 | read_from_string_index--; | |
472 | read_from_string_index_byte | |
473 | = string_char_to_byte (readcharfun, read_from_string_index); | |
474 | } | |
8792be66 KH |
475 | else if (CONSP (readcharfun)) |
476 | { | |
477 | unread_char = c; | |
478 | } | |
ad0153e4 | 479 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
480 | { |
481 | unread_char = c; | |
482 | } | |
483 | else if (EQ (readcharfun, Qget_file_char) | |
484 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
485 | { | |
486 | if (load_each_byte) | |
d85d3839 MB |
487 | { |
488 | BLOCK_INPUT; | |
489 | ungetc (c, instream); | |
490 | UNBLOCK_INPUT; | |
491 | } | |
8792be66 KH |
492 | else |
493 | unread_char = c; | |
494 | } | |
078e7b4a JB |
495 | else |
496 | call1 (readcharfun, make_number (c)); | |
497 | } | |
498 | ||
8792be66 | 499 | static int |
971de7fb | 500 | readbyte_for_lambda (int c, Lisp_Object readcharfun) |
8792be66 KH |
501 | { |
502 | return read_bytecode_char (c >= 0); | |
503 | } | |
504 | ||
505 | ||
506 | static int | |
971de7fb | 507 | readbyte_from_file (int c, Lisp_Object readcharfun) |
8792be66 KH |
508 | { |
509 | if (c >= 0) | |
510 | { | |
66cd0949 | 511 | BLOCK_INPUT; |
8792be66 | 512 | ungetc (c, instream); |
66cd0949 | 513 | UNBLOCK_INPUT; |
8792be66 KH |
514 | return 0; |
515 | } | |
516 | ||
d85d3839 | 517 | BLOCK_INPUT; |
8792be66 | 518 | c = getc (instream); |
d85d3839 | 519 | |
8792be66 | 520 | #ifdef EINTR |
d85d3839 MB |
521 | /* Interrupted reads have been observed while reading over the network */ |
522 | while (c == EOF && ferror (instream) && errno == EINTR) | |
523 | { | |
57cb2e6f | 524 | UNBLOCK_INPUT; |
d85d3839 | 525 | QUIT; |
d85d3839 | 526 | BLOCK_INPUT; |
57cb2e6f | 527 | clearerr (instream); |
d85d3839 | 528 | c = getc (instream); |
66cd0949 | 529 | } |
8792be66 | 530 | #endif |
d85d3839 | 531 | |
57cb2e6f MB |
532 | UNBLOCK_INPUT; |
533 | ||
8792be66 KH |
534 | return (c == EOF ? -1 : c); |
535 | } | |
536 | ||
537 | static int | |
971de7fb | 538 | readbyte_from_string (int c, Lisp_Object readcharfun) |
8792be66 KH |
539 | { |
540 | Lisp_Object string = XCAR (readcharfun); | |
541 | ||
542 | if (c >= 0) | |
543 | { | |
544 | read_from_string_index--; | |
545 | read_from_string_index_byte | |
546 | = string_char_to_byte (string, read_from_string_index); | |
547 | } | |
8f924df7 | 548 | |
8792be66 KH |
549 | if (read_from_string_index >= read_from_string_limit) |
550 | c = -1; | |
551 | else | |
552 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
553 | read_from_string_index, | |
554 | read_from_string_index_byte); | |
555 | return c; | |
556 | } | |
557 | ||
558 | ||
559 | /* Read one non-ASCII character from INSTREAM. The character is | |
560 | encoded in `emacs-mule' and the first byte is already read in | |
561 | C. */ | |
562 | ||
563 | extern char emacs_mule_bytes[256]; | |
564 | ||
565 | static int | |
971de7fb | 566 | read_emacs_mule_char (int c, int (*readbyte) (int, Lisp_Object), Lisp_Object readcharfun) |
8792be66 KH |
567 | { |
568 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
569 | unsigned char buf[4]; | |
570 | int len = emacs_mule_bytes[c]; | |
571 | struct charset *charset; | |
572 | int i; | |
573 | unsigned code; | |
574 | ||
575 | if (len == 1) | |
576 | /* C is not a valid leading-code of `emacs-mule'. */ | |
577 | return BYTE8_TO_CHAR (c); | |
578 | ||
579 | i = 0; | |
580 | buf[i++] = c; | |
581 | while (i < len) | |
582 | { | |
583 | c = (*readbyte) (-1, readcharfun); | |
584 | if (c < 0xA0) | |
585 | { | |
586 | while (--i > 1) | |
587 | (*readbyte) (buf[i], readcharfun); | |
588 | return BYTE8_TO_CHAR (buf[0]); | |
589 | } | |
590 | buf[i++] = c; | |
591 | } | |
592 | ||
593 | if (len == 2) | |
594 | { | |
da6b532c | 595 | charset = emacs_mule_charset[buf[0]]; |
8792be66 KH |
596 | code = buf[1] & 0x7F; |
597 | } | |
598 | else if (len == 3) | |
599 | { | |
600 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
601 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
602 | { | |
603 | charset = emacs_mule_charset[buf[1]]; | |
604 | code = buf[2] & 0x7F; | |
605 | } | |
606 | else | |
607 | { | |
608 | charset = emacs_mule_charset[buf[0]]; | |
609 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; | |
610 | } | |
611 | } | |
612 | else | |
613 | { | |
614 | charset = emacs_mule_charset[buf[1]]; | |
8f924df7 | 615 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
616 | } |
617 | c = DECODE_CHAR (charset, code); | |
618 | if (c < 0) | |
619 | Fsignal (Qinvalid_read_syntax, | |
620 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
621 | return c; | |
622 | } | |
623 | ||
624 | ||
f57e2426 J |
625 | static Lisp_Object read_internal_start (Lisp_Object, Lisp_Object, |
626 | Lisp_Object); | |
627 | static Lisp_Object read0 (Lisp_Object); | |
628 | static Lisp_Object read1 (Lisp_Object, int *, int); | |
abb13b09 | 629 | |
f57e2426 J |
630 | static Lisp_Object read_list (int, Lisp_Object); |
631 | static Lisp_Object read_vector (Lisp_Object, int); | |
abb13b09 | 632 | |
f57e2426 J |
633 | static Lisp_Object substitute_object_recurse (Lisp_Object, Lisp_Object, |
634 | Lisp_Object); | |
635 | static void substitute_object_in_subtree (Lisp_Object, | |
636 | Lisp_Object); | |
637 | static void substitute_in_interval (INTERVAL, Lisp_Object); | |
9e062b6c | 638 | |
078e7b4a | 639 | \f |
bed23cb2 | 640 | /* Get a character from the tty. */ |
078e7b4a | 641 | |
f42be754 JB |
642 | /* Read input events until we get one that's acceptable for our purposes. |
643 | ||
644 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
645 | until we get a character we like, and then stuffed into | |
646 | unread_switch_frame. | |
647 | ||
648 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
649 | if the unmodified version of the symbol has a Qascii_character | |
650 | property, and use that character, if present. | |
651 | ||
652 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
653 | get isn't an ASCII character with modifiers. If it's zero but | |
654 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
655 | character. |
656 | ||
657 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
658 | if the character warrants that. |
659 | ||
660 | If SECONDS is a number, we wait that many seconds for input, and | |
661 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 662 | |
f42be754 | 663 | Lisp_Object |
bb49a192 | 664 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
50e48299 | 665 | input_method, seconds) |
bb49a192 | 666 | int no_switch_frame, ascii_required, error_nonascii, input_method; |
50e48299 | 667 | Lisp_Object seconds; |
f42be754 | 668 | { |
4332cf50 | 669 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 670 | EMACS_TIME end_time; |
153a17b7 | 671 | |
5dbf89bc | 672 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
673 | if (display_hourglass_p) |
674 | cancel_hourglass (); | |
5dbf89bc | 675 | #endif |
177c0ea7 | 676 | |
153a17b7 | 677 | delayed_switch_frame = Qnil; |
f42be754 | 678 | |
50e48299 CY |
679 | /* Compute timeout. */ |
680 | if (NUMBERP (seconds)) | |
681 | { | |
682 | EMACS_TIME wait_time; | |
683 | int sec, usec; | |
51d8b30e | 684 | double duration = extract_float (seconds); |
50e48299 CY |
685 | |
686 | sec = (int) duration; | |
687 | usec = (duration - sec) * 1000000; | |
688 | EMACS_GET_TIME (end_time); | |
689 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
690 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
691 | } | |
692 | ||
251bc578 | 693 | /* Read until we get an acceptable event. */ |
f42be754 | 694 | retry: |
88852d45 | 695 | do |
251bc578 KL |
696 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
697 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 698 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 699 | |
cfff016d | 700 | if (BUFFERP (val)) |
6c82d689 KH |
701 | goto retry; |
702 | ||
f42be754 | 703 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 704 | character. This is better than signaling an error just because |
f42be754 JB |
705 | the last characters were typed to a separate minibuffer frame, |
706 | for example. Eventually, some code which can deal with | |
707 | switch-frame events will read it and process it. */ | |
708 | if (no_switch_frame | |
709 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 710 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
711 | { |
712 | delayed_switch_frame = val; | |
713 | goto retry; | |
714 | } | |
715 | ||
50e48299 | 716 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
717 | { |
718 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 719 | if (SYMBOLP (val)) |
f42be754 | 720 | { |
95384e1e | 721 | Lisp_Object tem, tem1; |
f42be754 JB |
722 | tem = Fget (val, Qevent_symbol_element_mask); |
723 | if (!NILP (tem)) | |
724 | { | |
725 | tem1 = Fget (Fcar (tem), Qascii_character); | |
726 | /* Merge this symbol's modifier bits | |
727 | with the ASCII equivalent of its basic code. */ | |
728 | if (!NILP (tem1)) | |
baf69866 | 729 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
730 | } |
731 | } | |
177c0ea7 | 732 | |
f42be754 | 733 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 734 | if (!INTEGERP (val)) |
f42be754 JB |
735 | { |
736 | if (error_nonascii) | |
737 | { | |
1ec84625 | 738 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
739 | error ("Non-character input-event"); |
740 | } | |
741 | else | |
742 | goto retry; | |
743 | } | |
744 | } | |
745 | ||
746 | if (! NILP (delayed_switch_frame)) | |
747 | unread_switch_frame = delayed_switch_frame; | |
748 | ||
67868d27 PJ |
749 | #if 0 |
750 | ||
5dbf89bc | 751 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
752 | if (display_hourglass_p) |
753 | start_hourglass (); | |
5dbf89bc | 754 | #endif |
67868d27 PJ |
755 | |
756 | #endif | |
757 | ||
f42be754 | 758 | return val; |
f42be754 JB |
759 | } |
760 | ||
50e48299 | 761 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
762 | doc: /* Read a character from the command input (keyboard or macro). |
763 | It is returned as a number. | |
fb26c2af KH |
764 | If the character has modifiers, they are resolved and reflected to the |
765 | character code if possible (e.g. C-SPC -> 0). | |
766 | ||
5de38842 PJ |
767 | If the user generates an event which is not a character (i.e. a mouse |
768 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
769 | exception, switch-frame events are put off until non-character events |
770 | can be read. | |
5de38842 PJ |
771 | If you want to read non-character events, or ignore them, call |
772 | `read-event' or `read-char-exclusive' instead. | |
773 | ||
774 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
775 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
776 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
777 | is used for reading a character. |
778 | If the optional argument SECONDS is non-nil, it should be a number | |
779 | specifying the maximum number of seconds to wait for input. If no | |
780 | input arrives in that time, return nil. SECONDS may be a | |
781 | floating-point value. */) | |
782 | (prompt, inherit_input_method, seconds) | |
783 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 784 | { |
fb26c2af | 785 | Lisp_Object val; |
fb26c2af | 786 | |
bb49a192 RS |
787 | if (! NILP (prompt)) |
788 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 789 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
790 | |
791 | return (NILP (val) ? Qnil | |
792 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
793 | } |
794 | ||
50e48299 | 795 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
796 | doc: /* Read an event object from the input stream. |
797 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
798 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
799 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
800 | is used for reading a character. |
801 | If the optional argument SECONDS is non-nil, it should be a number | |
802 | specifying the maximum number of seconds to wait for input. If no | |
803 | input arrives in that time, return nil. SECONDS may be a | |
804 | floating-point value. */) | |
805 | (prompt, inherit_input_method, seconds) | |
806 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 807 | { |
bb49a192 RS |
808 | if (! NILP (prompt)) |
809 | message_with_string ("%s", prompt, 0); | |
50e48299 | 810 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
811 | } |
812 | ||
50e48299 | 813 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
814 | doc: /* Read a character from the command input (keyboard or macro). |
815 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
816 | If the character has modifiers, they are resolved and reflected to the |
817 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
818 | |
819 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
820 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
821 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
822 | is used for reading a character. |
823 | If the optional argument SECONDS is non-nil, it should be a number | |
824 | specifying the maximum number of seconds to wait for input. If no | |
825 | input arrives in that time, return nil. SECONDS may be a | |
826 | floating-point value. */) | |
827 | (prompt, inherit_input_method, seconds) | |
828 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 829 | { |
fb26c2af | 830 | Lisp_Object val; |
fb26c2af | 831 | |
bb49a192 RS |
832 | if (! NILP (prompt)) |
833 | message_with_string ("%s", prompt, 0); | |
66c410ce | 834 | |
fb26c2af | 835 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
836 | |
837 | return (NILP (val) ? Qnil | |
838 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 839 | } |
078e7b4a JB |
840 | |
841 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
842 | doc: /* Don't use this yourself. */) |
843 | () | |
078e7b4a JB |
844 | { |
845 | register Lisp_Object val; | |
66cd0949 | 846 | BLOCK_INPUT; |
1805de4f | 847 | XSETINT (val, getc (instream)); |
66cd0949 | 848 | UNBLOCK_INPUT; |
078e7b4a JB |
849 | return val; |
850 | } | |
da84f340 GM |
851 | |
852 | ||
550a625e | 853 | \f |
8792be66 | 854 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 855 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
856 | safe to load. Only files compiled with Emacs are safe to load. |
857 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
858 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
859 | |
860 | static int | |
971de7fb | 861 | safe_to_load_p (int fd) |
da84f340 GM |
862 | { |
863 | char buf[512]; | |
864 | int nbytes, i; | |
865 | int safe_p = 1; | |
8f924df7 | 866 | int version = 1; |
da84f340 GM |
867 | |
868 | /* Read the first few bytes from the file, and look for a line | |
869 | specifying the byte compiler version used. */ | |
870 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
871 | if (nbytes > 0) | |
872 | { | |
873 | buf[nbytes] = '\0'; | |
874 | ||
875 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 876 | with NUL bytes following it, but note the version. */ |
da84f340 | 877 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 878 | if (i == 4) |
8792be66 | 879 | version = buf[i]; |
da84f340 | 880 | |
927f12da KH |
881 | if (i == nbytes |
882 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
883 | buf + i) < 0) |
884 | safe_p = 0; | |
885 | } | |
1da3b9e4 DL |
886 | if (safe_p) |
887 | safe_p = version; | |
da84f340 GM |
888 | |
889 | lseek (fd, 0, SEEK_SET); | |
890 | return safe_p; | |
891 | } | |
892 | ||
893 | ||
7ee3bd7b GM |
894 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
895 | after loading a file successfully. */ | |
896 | ||
897 | static Lisp_Object | |
971de7fb | 898 | record_load_unwind (Lisp_Object old) |
7ee3bd7b GM |
899 | { |
900 | return Vloads_in_progress = old; | |
901 | } | |
902 | ||
164c8bfe RS |
903 | /* This handler function is used via internal_condition_case_1. */ |
904 | ||
905 | static Lisp_Object | |
971de7fb | 906 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
907 | { |
908 | return Qnil; | |
909 | } | |
7ee3bd7b | 910 | |
1d064697 | 911 | static Lisp_Object |
971de7fb | 912 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
913 | { |
914 | if (!NILP (Vold_style_backquotes)) | |
915 | { | |
b636b4c1 | 916 | Lisp_Object args[2]; |
18a4a65e | 917 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
918 | args[1] = file; |
919 | Fmessage (2, args); | |
920 | } | |
921 | return Qnil; | |
922 | } | |
923 | ||
971a4293 LT |
924 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
925 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
926 | required. | |
927 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
928 | () | |
929 | { | |
930 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
931 | while (CONSP (suffixes)) | |
932 | { | |
933 | Lisp_Object exts = Vload_file_rep_suffixes; | |
934 | suffix = XCAR (suffixes); | |
935 | suffixes = XCDR (suffixes); | |
936 | while (CONSP (exts)) | |
937 | { | |
938 | ext = XCAR (exts); | |
939 | exts = XCDR (exts); | |
940 | lst = Fcons (concat2 (suffix, ext), lst); | |
941 | } | |
942 | } | |
943 | return Fnreverse (lst); | |
944 | } | |
945 | ||
f0a50954 | 946 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
947 | doc: /* Execute a file of Lisp code named FILE. |
948 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 949 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 950 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 951 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 952 | This function searches the directories in `load-path'. |
971a4293 | 953 | |
5de38842 | 954 | If optional second arg NOERROR is non-nil, |
971a4293 | 955 | report no error if FILE doesn't exist. |
5de38842 | 956 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
957 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
958 | overrides that). | |
5de38842 | 959 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 960 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 961 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
962 | the suffix `.elc' or `.el'; don't accept just FILE unless |
963 | it ends in one of those suffixes or includes a directory name. | |
964 | ||
965 | If this function fails to find a file, it may look for different | |
966 | representations of that file before trying another file. | |
967 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
968 | to the file name. Emacs uses this feature mainly to find compressed | |
969 | versions of files when Auto Compression mode is enabled. | |
970 | ||
971 | The exact suffixes that this function tries out, in the exact order, | |
972 | are given by the value of the variable `load-file-rep-suffixes' if | |
973 | NOSUFFIX is non-nil and by the return value of the function | |
974 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
975 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
976 | and then the former. | |
0fc213e9 RS |
977 | |
978 | Loading a file records its definitions, and its `provide' and | |
979 | `require' calls, in an element of `load-history' whose | |
980 | car is the file name loaded. See `load-history'. | |
981 | ||
971a4293 | 982 | Return t if the file exists and loads successfully. */) |
5de38842 | 983 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 984 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
985 | { |
986 | register FILE *stream; | |
987 | register int fd = -1; | |
aed13378 | 988 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
989 | struct gcpro gcpro1, gcpro2, gcpro3; |
990 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
991 | /* 1 means we printed the ".el is newer" message. */ |
992 | int newer = 0; | |
993 | /* 1 means we are loading a compiled file. */ | |
994 | int compiled = 0; | |
c2225d00 | 995 | Lisp_Object handler; |
456c67a4 | 996 | int safe_p = 1; |
229ba775 | 997 | char *fmode = "r"; |
6bb6da3e | 998 | Lisp_Object tmp[2]; |
8792be66 KH |
999 | int version; |
1000 | ||
317073d5 | 1001 | #ifdef DOS_NT |
229ba775 | 1002 | fmode = "rt"; |
317073d5 | 1003 | #endif /* DOS_NT */ |
078e7b4a | 1004 | |
b7826503 | 1005 | CHECK_STRING (file); |
078e7b4a | 1006 | |
c2225d00 | 1007 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1008 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1009 | handler = Ffind_file_name_handler (file, Qload); | |
1010 | if (!NILP (handler)) | |
1011 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1012 | |
07a0bda3 RS |
1013 | /* Do this after the handler to avoid |
1014 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1015 | (Below here, we care only whether they are nil or not.) |
1016 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1017 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1018 | everywhere, it accidentally stayed here. Since then, enough people |
1019 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1020 | that it seemed risky to remove. */ | |
164c8bfe RS |
1021 | if (! NILP (noerror)) |
1022 | { | |
1023 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1024 | Qt, load_error_handler); | |
1025 | if (NILP (file)) | |
1026 | return Qnil; | |
1027 | } | |
1028 | else | |
1029 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1030 | |
07a0bda3 | 1031 | |
078e7b4a JB |
1032 | /* Avoid weird lossage with null string as arg, |
1033 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 1034 | if (SCHARS (file) > 0) |
078e7b4a | 1035 | { |
d5db4077 | 1036 | int size = SBYTES (file); |
211f7dcd | 1037 | |
0fc213e9 RS |
1038 | found = Qnil; |
1039 | GCPRO2 (file, found); | |
211f7dcd RS |
1040 | |
1041 | if (! NILP (must_suffix)) | |
1042 | { | |
1043 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1044 | if (size > 3 | |
d5db4077 | 1045 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1046 | must_suffix = Qnil; |
1047 | else if (size > 4 | |
d5db4077 | 1048 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1049 | must_suffix = Qnil; |
1050 | /* Don't insist on adding a suffix | |
1051 | if the argument includes a directory name. */ | |
1052 | else if (! NILP (Ffile_name_directory (file))) | |
1053 | must_suffix = Qnil; | |
1054 | } | |
1055 | ||
f0a50954 | 1056 | fd = openp (Vload_path, file, |
e61b9b87 | 1057 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1058 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1059 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1060 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1061 | tmp))), |
86d00812 | 1062 | &found, Qnil); |
5a6e5452 | 1063 | UNGCPRO; |
078e7b4a JB |
1064 | } |
1065 | ||
96dc0f4e | 1066 | if (fd == -1) |
078e7b4a | 1067 | { |
265a9e55 | 1068 | if (NILP (noerror)) |
336d4a9c KS |
1069 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1070 | return Qnil; | |
078e7b4a JB |
1071 | } |
1072 | ||
ba0d1195 | 1073 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1074 | if (EQ (Qt, Vuser_init_file)) |
1075 | Vuser_init_file = found; | |
1076 | ||
96dc0f4e MB |
1077 | /* If FD is -2, that means openp found a magic file. */ |
1078 | if (fd == -2) | |
74549846 | 1079 | { |
5e24a1f7 KH |
1080 | if (NILP (Fequal (found, file))) |
1081 | /* If FOUND is a different file name from FILE, | |
1082 | find its handler even if we have already inhibited | |
1083 | the `load' operation on FILE. */ | |
1084 | handler = Ffind_file_name_handler (found, Qt); | |
1085 | else | |
1086 | handler = Ffind_file_name_handler (found, Qload); | |
1087 | if (! NILP (handler)) | |
1088 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1089 | } |
1090 | ||
550a625e GM |
1091 | /* Check if we're stuck in a recursive load cycle. |
1092 | ||
1093 | 2000-09-21: It's not possible to just check for the file loaded | |
1094 | being a member of Vloads_in_progress. This fails because of the | |
1095 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1096 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1097 | leads to a certain amount of ``normal'' recursion. |
1098 | ||
1099 | Also, just loading a file recursively is not always an error in | |
1100 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1101 | { |
1102 | int count = 0; | |
1103 | Lisp_Object tem; | |
1104 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
8fc45744 JB |
1105 | if (!NILP (Fequal (found, XCAR (tem))) && (++count > 3)) |
1106 | { | |
1107 | if (fd >= 0) | |
1108 | emacs_close (fd); | |
1109 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1110 | } | |
3ba6fd9a RS |
1111 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1112 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1113 | } | |
7ee3bd7b | 1114 | |
6bb6da3e AM |
1115 | /* Get the name for load-history. */ |
1116 | hist_file_name = (! NILP (Vpurify_flag) | |
1117 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1118 | tmp[1] = Ffile_name_nondirectory (found), | |
1119 | tmp)) | |
1120 | : found) ; | |
1121 | ||
8792be66 | 1122 | version = -1; |
1bb9a689 | 1123 | |
88852d45 | 1124 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1125 | specbind (Qold_style_backquotes, Qnil); |
1126 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1127 | ||
a1c89c0a | 1128 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
8792be66 | 1129 | ".elc", 4) |
74327f7a | 1130 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1131 | /* Load .elc files directly, but not when they are |
1132 | remote and have no handler! */ | |
078e7b4a | 1133 | { |
96dc0f4e | 1134 | if (fd != -2) |
da84f340 | 1135 | { |
96dc0f4e MB |
1136 | struct stat s1, s2; |
1137 | int result; | |
da84f340 | 1138 | |
6bb6da3e | 1139 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1140 | |
8792be66 KH |
1141 | if (version < 0 |
1142 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1143 | { |
1144 | safe_p = 0; | |
1145 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1146 | { |
1147 | if (fd >= 0) | |
1148 | emacs_close (fd); | |
1149 | error ("File `%s' was not compiled in Emacs", | |
1150 | SDATA (found)); | |
1151 | } | |
beb0b7f9 | 1152 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1153 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1154 | } | |
04fc68e7 | 1155 | |
96dc0f4e MB |
1156 | compiled = 1; |
1157 | ||
eb191db2 EZ |
1158 | efound = ENCODE_FILE (found); |
1159 | ||
26fbf20b | 1160 | #ifdef DOS_NT |
96dc0f4e | 1161 | fmode = "rb"; |
26fbf20b | 1162 | #endif /* DOS_NT */ |
d5db4077 | 1163 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 1164 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 1165 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 1166 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1167 | |
96dc0f4e MB |
1168 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1169 | { | |
1170 | /* Make the progress messages mention that source is newer. */ | |
1171 | newer = 1; | |
04fc68e7 | 1172 | |
96dc0f4e | 1173 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1174 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1175 | { |
0fc213e9 RS |
1176 | Lisp_Object msg_file; |
1177 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1178 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1179 | msg_file, 1); |
714d8c39 | 1180 | } |
96dc0f4e | 1181 | } |
0fc213e9 | 1182 | UNGCPRO; |
51ac6f83 | 1183 | } |
078e7b4a | 1184 | } |
fe0e03f3 KH |
1185 | else |
1186 | { | |
1187 | /* We are loading a source file (*.el). */ | |
1188 | if (!NILP (Vload_source_file_function)) | |
1189 | { | |
7ee3bd7b | 1190 | Lisp_Object val; |
96dc0f4e MB |
1191 | |
1192 | if (fd >= 0) | |
68c45bf0 | 1193 | emacs_close (fd); |
6bb6da3e | 1194 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1195 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1196 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1197 | return unbind_to (count, val); |
fe0e03f3 KH |
1198 | } |
1199 | } | |
078e7b4a | 1200 | |
6bb6da3e | 1201 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1202 | |
229ba775 | 1203 | #ifdef WINDOWSNT |
68c45bf0 | 1204 | emacs_close (fd); |
eb191db2 | 1205 | efound = ENCODE_FILE (found); |
d5db4077 | 1206 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
1207 | #else /* not WINDOWSNT */ |
1208 | stream = fdopen (fd, fmode); | |
1209 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1210 | if (stream == 0) |
1211 | { | |
68c45bf0 | 1212 | emacs_close (fd); |
d5db4077 | 1213 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1214 | } |
1215 | ||
4b104c41 | 1216 | if (! NILP (Vpurify_flag)) |
ca0a881a | 1217 | Vpreloaded_file_list = Fcons (Fpurecopy(file), Vpreloaded_file_list); |
4b104c41 | 1218 | |
beb0b7f9 | 1219 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1220 | { |
da84f340 GM |
1221 | if (!safe_p) |
1222 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1223 | file, 1); | |
1224 | else if (!compiled) | |
e28552a4 | 1225 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1226 | else if (newer) |
e28552a4 RS |
1227 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1228 | file, 1); | |
db5cae4b | 1229 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1230 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1231 | } |
078e7b4a | 1232 | |
c04d9e70 | 1233 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1234 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1235 | specbind (Qload_file_name, found); |
74549846 | 1236 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1237 | load_descriptor_list |
1238 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
2baf5e76 | 1239 | specbind (Qload_in_progress, Qt); |
ab2a47e1 | 1240 | if (! version || version >= 22) |
b883cdb2 | 1241 | readevalloop (Qget_file_char, stream, hist_file_name, |
6a2bd1a5 | 1242 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1243 | else |
1244 | { | |
1245 | /* We can't handle a file which was compiled with | |
1246 | byte-compile-dynamic by older version of Emacs. */ | |
1247 | specbind (Qload_force_doc_strings, Qt); | |
b883cdb2 | 1248 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, Feval, |
768d4533 | 1249 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1250 | } |
078e7b4a JB |
1251 | unbind_to (count, Qnil); |
1252 | ||
6bb6da3e | 1253 | /* Run any eval-after-load forms for this file */ |
428b13d6 | 1254 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1255 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1256 | ||
078e7b4a JB |
1257 | UNGCPRO; |
1258 | ||
97dead2d | 1259 | xfree (saved_doc_string); |
b2a30870 RS |
1260 | saved_doc_string = 0; |
1261 | saved_doc_string_size = 0; | |
1262 | ||
70fdbb46 | 1263 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1264 | prev_saved_doc_string = 0; |
1265 | prev_saved_doc_string_size = 0; | |
1266 | ||
beb0b7f9 | 1267 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1268 | { |
da84f340 GM |
1269 | if (!safe_p) |
1270 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1271 | file, 1); | |
1272 | else if (!compiled) | |
e28552a4 | 1273 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1274 | else if (newer) |
e28552a4 RS |
1275 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1276 | file, 1); | |
db5cae4b | 1277 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1278 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1279 | } |
7ee3bd7b | 1280 | |
078e7b4a JB |
1281 | return Qt; |
1282 | } | |
1283 | ||
1284 | static Lisp_Object | |
971de7fb DN |
1285 | load_unwind (Lisp_Object arg) /* used as unwind-protect function in load */ |
1286 | ||
078e7b4a | 1287 | { |
ebfe97a2 KS |
1288 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1289 | if (stream != NULL) | |
66cd0949 YM |
1290 | { |
1291 | BLOCK_INPUT; | |
1292 | fclose (stream); | |
1293 | UNBLOCK_INPUT; | |
1294 | } | |
078e7b4a JB |
1295 | return Qnil; |
1296 | } | |
1297 | ||
d2c6be7f | 1298 | static Lisp_Object |
971de7fb | 1299 | load_descriptor_unwind (Lisp_Object oldlist) |
d2c6be7f RS |
1300 | { |
1301 | load_descriptor_list = oldlist; | |
838abf56 | 1302 | return Qnil; |
d2c6be7f RS |
1303 | } |
1304 | ||
1305 | /* Close all descriptors in use for Floads. | |
1306 | This is used when starting a subprocess. */ | |
1307 | ||
1308 | void | |
971de7fb | 1309 | close_load_descs (void) |
d2c6be7f | 1310 | { |
f3849f25 | 1311 | #ifndef WINDOWSNT |
d2c6be7f | 1312 | Lisp_Object tail; |
9beb8baa | 1313 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1314 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1315 | #endif |
d2c6be7f | 1316 | } |
078e7b4a JB |
1317 | \f |
1318 | static int | |
971de7fb | 1319 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1320 | { |
4b2dd274 | 1321 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1322 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1323 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1324 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1325 | } |
1326 | ||
86d00812 SM |
1327 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1328 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1329 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1330 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1331 | file name when searching. | |
1332 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1333 | PREDICATE can also be an integer to pass to the access(2) function, | |
1334 | in which case file-name-handlers are ignored. */) | |
1335 | (filename, path, suffixes, predicate) | |
1336 | Lisp_Object filename, path, suffixes, predicate; | |
1337 | { | |
1338 | Lisp_Object file; | |
1339 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1340 | if (NILP (predicate) && fd > 0) | |
1341 | close (fd); | |
1342 | return file; | |
1343 | } | |
1344 | ||
1345 | ||
078e7b4a JB |
1346 | /* Search for a file whose name is STR, looking in directories |
1347 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1348 | On success, returns a file descriptor. On failure, returns -1. |
1349 | ||
e61b9b87 | 1350 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1351 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1352 | |
86d00812 SM |
1353 | PREDICATE non-nil means don't open the files, |
1354 | just look for one that satisfies the predicate. In this case, | |
1355 | returns 1 on success. The predicate can be a lisp function or | |
1356 | an integer to pass to `access' (in which case file-name-handlers | |
1357 | are ignored). | |
078e7b4a JB |
1358 | |
1359 | If STOREPTR is nonzero, it points to a slot where the name of | |
1360 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1361 | nil is stored there on failure. |
1362 | ||
96dc0f4e | 1363 | If the file we find is remote, return -2 |
86d00812 | 1364 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1365 | |
1366 | int | |
971de7fb | 1367 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate) |
078e7b4a JB |
1368 | { |
1369 | register int fd; | |
1370 | int fn_size = 100; | |
1371 | char buf[100]; | |
1372 | register char *fn = buf; | |
1373 | int absolute = 0; | |
1374 | int want_size; | |
74549846 | 1375 | Lisp_Object filename; |
078e7b4a | 1376 | struct stat st; |
eb191db2 EZ |
1377 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1378 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1379 | int max_suffix_len = 0; |
1380 | ||
6f8eafd1 SM |
1381 | CHECK_STRING (str); |
1382 | ||
e61b9b87 SM |
1383 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1384 | { | |
f5df591a | 1385 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1386 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1387 | SBYTES (XCAR (tail))); |
e61b9b87 | 1388 | } |
078e7b4a | 1389 | |
8b9d426a | 1390 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1391 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1392 | ||
078e7b4a JB |
1393 | if (storeptr) |
1394 | *storeptr = Qnil; | |
1395 | ||
1396 | if (complete_filename_p (str)) | |
1397 | absolute = 1; | |
1398 | ||
e61b9b87 | 1399 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1400 | { |
e61b9b87 | 1401 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1402 | if (!complete_filename_p (filename)) |
1403 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1404 | /* Of course, this could conceivably lose if luser sets | |
1405 | default-directory to be something non-absolute... */ | |
1406 | { | |
1407 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1408 | if (!complete_filename_p (filename)) | |
1409 | /* Give up on this path element! */ | |
1410 | continue; | |
1411 | } | |
1412 | ||
1413 | /* Calculate maximum size of any filename made from | |
1414 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1415 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1416 | if (fn_size < want_size) |
1417 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1418 | ||
078e7b4a | 1419 | /* Loop over suffixes. */ |
a74d1c97 | 1420 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1421 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1422 | { |
d5db4077 | 1423 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1424 | Lisp_Object handler; |
eb191db2 | 1425 | int exists; |
078e7b4a | 1426 | |
c49afcd7 RS |
1427 | /* Concatenate path element/specified name with the suffix. |
1428 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1429 | if (SCHARS (filename) > 2 |
1430 | && SREF (filename, 0) == '/' | |
1431 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1432 | { |
d5db4077 KR |
1433 | strncpy (fn, SDATA (filename) + 2, |
1434 | SBYTES (filename) - 2); | |
1435 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1436 | } |
1437 | else | |
1438 | { | |
d5db4077 KR |
1439 | strncpy (fn, SDATA (filename), |
1440 | SBYTES (filename)); | |
1441 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1442 | } |
1443 | ||
078e7b4a | 1444 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1445 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1446 | |
74549846 | 1447 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1448 | /* We used to only check for handlers on non-absolute file names: |
1449 | if (absolute) | |
1450 | handler = Qnil; | |
1451 | else | |
1452 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1453 | It's not clear why that was the case and it breaks things like | |
1454 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1455 | string = build_string (fn); |
4773b8ca | 1456 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1457 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1458 | { | |
1459 | if (NILP (predicate)) | |
1460 | exists = !NILP (Ffile_readable_p (string)); | |
1461 | else | |
1462 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1463 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1464 | exists = 0; |
1465 | ||
1466 | if (exists) | |
078e7b4a JB |
1467 | { |
1468 | /* We succeeded; return this descriptor and filename. */ | |
1469 | if (storeptr) | |
eb191db2 | 1470 | *storeptr = string; |
5ef2a3c0 | 1471 | UNGCPRO; |
96dc0f4e | 1472 | return -2; |
74549846 RS |
1473 | } |
1474 | } | |
1475 | else | |
1476 | { | |
4b2dd274 | 1477 | const char *pfn; |
eb191db2 EZ |
1478 | |
1479 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1480 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1481 | exists = (stat (pfn, &st) >= 0 |
1482 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1483 | if (exists) |
1484 | { | |
1485 | /* Check that we can access or open it. */ | |
86d00812 SM |
1486 | if (NATNUMP (predicate)) |
1487 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1488 | else |
eb191db2 | 1489 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1490 | |
1491 | if (fd >= 0) | |
1492 | { | |
1493 | /* We succeeded; return this descriptor and filename. */ | |
1494 | if (storeptr) | |
eb191db2 | 1495 | *storeptr = string; |
74549846 RS |
1496 | UNGCPRO; |
1497 | return fd; | |
1498 | } | |
078e7b4a JB |
1499 | } |
1500 | } | |
078e7b4a | 1501 | } |
5a6e5452 | 1502 | if (absolute) |
5ef2a3c0 | 1503 | break; |
078e7b4a JB |
1504 | } |
1505 | ||
5ef2a3c0 KH |
1506 | UNGCPRO; |
1507 | return -1; | |
078e7b4a JB |
1508 | } |
1509 | ||
1510 | \f | |
ae321d28 RS |
1511 | /* Merge the list we've accumulated of globals from the current input source |
1512 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1513 | the source has an associated file name or not. |
1514 | ||
1515 | FILENAME is the file name that we are loading from. | |
1516 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1517 | |
1518 | static void | |
971de7fb | 1519 | build_load_history (Lisp_Object filename, int entire) |
ae321d28 RS |
1520 | { |
1521 | register Lisp_Object tail, prev, newelt; | |
1522 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1523 | register int foundit = 0; |
ae321d28 RS |
1524 | |
1525 | tail = Vload_history; | |
1526 | prev = Qnil; | |
b502a9a1 | 1527 | |
86d00812 | 1528 | while (CONSP (tail)) |
ae321d28 | 1529 | { |
86d00812 | 1530 | tem = XCAR (tail); |
ae321d28 RS |
1531 | |
1532 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1533 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1534 | { |
1535 | foundit = 1; | |
1536 | ||
b502a9a1 RS |
1537 | /* If we're loading the entire file, remove old data. */ |
1538 | if (entire) | |
86d00812 | 1539 | { |
ae321d28 | 1540 | if (NILP (prev)) |
86d00812 | 1541 | Vload_history = XCDR (tail); |
ae321d28 | 1542 | else |
86d00812 | 1543 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1544 | } |
1545 | ||
1546 | /* Otherwise, cons on new symbols that are not already members. */ | |
1547 | else | |
1548 | { | |
1549 | tem2 = Vcurrent_load_list; | |
1550 | ||
1551 | while (CONSP (tem2)) | |
1552 | { | |
86d00812 | 1553 | newelt = XCAR (tem2); |
ae321d28 | 1554 | |
d642e4f9 | 1555 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1556 | Fsetcar (tail, Fcons (XCAR (tem), |
1557 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1558 | |
86d00812 | 1559 | tem2 = XCDR (tem2); |
ae321d28 RS |
1560 | QUIT; |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | else | |
1565 | prev = tail; | |
86d00812 | 1566 | tail = XCDR (tail); |
ae321d28 RS |
1567 | QUIT; |
1568 | } | |
1569 | ||
b502a9a1 RS |
1570 | /* If we're loading an entire file, cons the new assoc onto the |
1571 | front of load-history, the most-recently-loaded position. Also | |
1572 | do this if we didn't find an existing member for the file. */ | |
1573 | if (entire || !foundit) | |
8a1f1537 RS |
1574 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1575 | Vload_history); | |
ae321d28 RS |
1576 | } |
1577 | ||
078e7b4a | 1578 | Lisp_Object |
971de7fb DN |
1579 | unreadpure (Lisp_Object junk) /* Used as unwind-protect function in readevalloop */ |
1580 | ||
078e7b4a JB |
1581 | { |
1582 | read_pure = 0; | |
1583 | return Qnil; | |
1584 | } | |
1585 | ||
94e554db | 1586 | static Lisp_Object |
971de7fb | 1587 | readevalloop_1 (Lisp_Object old) |
94e554db RS |
1588 | { |
1589 | load_convert_to_unibyte = ! NILP (old); | |
1590 | return Qnil; | |
1591 | } | |
1592 | ||
9c97398c GM |
1593 | /* Signal an `end-of-file' error, if possible with file name |
1594 | information. */ | |
1595 | ||
1596 | static void | |
971de7fb | 1597 | end_of_file_error (void) |
9c97398c | 1598 | { |
9c97398c | 1599 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1600 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1601 | |
336d4a9c | 1602 | xsignal0 (Qend_of_file); |
9c97398c GM |
1603 | } |
1604 | ||
94e554db | 1605 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1606 | for this invocation. |
4c03c46d | 1607 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1608 | |
1609 | START, END specify region to read in current buffer (from eval-region). | |
1610 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1611 | |
078e7b4a | 1612 | static void |
4c03c46d KS |
1613 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1614 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1615 | Lisp_Object readcharfun; |
ae321d28 RS |
1616 | FILE *stream; |
1617 | Lisp_Object sourcename; | |
078e7b4a JB |
1618 | Lisp_Object (*evalfun) (); |
1619 | int printflag; | |
976350af | 1620 | Lisp_Object unibyte, readfun; |
4c03c46d | 1621 | Lisp_Object start, end; |
078e7b4a JB |
1622 | { |
1623 | register int c; | |
1624 | register Lisp_Object val; | |
aed13378 | 1625 | int count = SPECPDL_INDEX (); |
0a37f512 | 1626 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1627 | struct buffer *b = 0; |
f38952fe | 1628 | int continue_reading_p; |
d11db2c8 RS |
1629 | /* Nonzero if reading an entire buffer. */ |
1630 | int whole_buffer = 0; | |
1631 | /* 1 on the first time around. */ | |
1632 | int first_sexp = 1; | |
1633 | ||
1634 | if (MARKERP (readcharfun)) | |
1635 | { | |
1636 | if (NILP (start)) | |
8878319c | 1637 | start = readcharfun; |
d11db2c8 | 1638 | } |
49cf7ff4 RS |
1639 | |
1640 | if (BUFFERP (readcharfun)) | |
1641 | b = XBUFFER (readcharfun); | |
1642 | else if (MARKERP (readcharfun)) | |
1643 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1644 | |
1ed7b9ae RS |
1645 | /* We assume START is nil when input is not from a buffer. */ |
1646 | if (! NILP (start) && !b) | |
1647 | abort (); | |
1648 | ||
0a37f512 | 1649 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1650 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1651 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1652 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1653 | |
0a37f512 | 1654 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1655 | |
6bb6da3e AM |
1656 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1657 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1658 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1659 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1660 | sourcename = call1 (Qfile_truename, sourcename) ; |
1661 | ||
ae321d28 RS |
1662 | LOADHIST_ATTACH (sourcename); |
1663 | ||
f38952fe GM |
1664 | continue_reading_p = 1; |
1665 | while (continue_reading_p) | |
078e7b4a | 1666 | { |
4c03c46d KS |
1667 | int count1 = SPECPDL_INDEX (); |
1668 | ||
49cf7ff4 RS |
1669 | if (b != 0 && NILP (b->name)) |
1670 | error ("Reading from killed buffer"); | |
1671 | ||
4c03c46d KS |
1672 | if (!NILP (start)) |
1673 | { | |
721b7d9e | 1674 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1675 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1676 | set_buffer_internal (b); |
1677 | ||
1678 | /* Save point in it. */ | |
4c03c46d | 1679 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1680 | /* Save ZV in it. */ |
4c03c46d | 1681 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1682 | /* Those get unbound after we read one expression. */ |
1683 | ||
1684 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1685 | Fgoto_char (start); |
d11db2c8 RS |
1686 | if (!NILP (end)) |
1687 | Fnarrow_to_region (make_number (BEGV), end); | |
1688 | ||
1689 | /* Just for cleanliness, convert END to a marker | |
1690 | if it is an integer. */ | |
1691 | if (INTEGERP (end)) | |
1692 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1693 | } |
1694 | ||
d11db2c8 RS |
1695 | /* On the first cycle, we can easily test here |
1696 | whether we are reading the whole buffer. */ | |
1697 | if (b && first_sexp) | |
1698 | whole_buffer = (PT == BEG && ZV == Z); | |
1699 | ||
078e7b4a | 1700 | instream = stream; |
4c03c46d | 1701 | read_next: |
078e7b4a JB |
1702 | c = READCHAR; |
1703 | if (c == ';') | |
1704 | { | |
1705 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1706 | goto read_next; |
1707 | } | |
1708 | if (c < 0) | |
1709 | { | |
1710 | unbind_to (count1, Qnil); | |
1711 | break; | |
078e7b4a | 1712 | } |
6069d957 RS |
1713 | |
1714 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1715 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1716 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1717 | goto read_next; |
078e7b4a | 1718 | |
265a9e55 | 1719 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1720 | { |
1721 | record_unwind_protect (unreadpure, Qnil); | |
1722 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1723 | } |
1724 | else | |
1725 | { | |
1726 | UNREAD (c); | |
4ad679f9 | 1727 | read_objects = Qnil; |
f38952fe GM |
1728 | if (!NILP (readfun)) |
1729 | { | |
1730 | val = call1 (readfun, readcharfun); | |
1731 | ||
1732 | /* If READCHARFUN has set point to ZV, we should | |
1733 | stop reading, even if the form read sets point | |
1734 | to a different value when evaluated. */ | |
1735 | if (BUFFERP (readcharfun)) | |
1736 | { | |
1737 | struct buffer *b = XBUFFER (readcharfun); | |
1738 | if (BUF_PT (b) == BUF_ZV (b)) | |
1739 | continue_reading_p = 0; | |
1740 | } | |
1741 | } | |
976350af | 1742 | else if (! NILP (Vload_read_function)) |
84a15045 | 1743 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1744 | else |
abb13b09 | 1745 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1746 | } |
1747 | ||
4c03c46d KS |
1748 | if (!NILP (start) && continue_reading_p) |
1749 | start = Fpoint_marker (); | |
d11db2c8 RS |
1750 | |
1751 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1752 | unbind_to (count1, Qnil); |
1753 | ||
d11db2c8 | 1754 | /* Now eval what we just read. */ |
078e7b4a | 1755 | val = (*evalfun) (val); |
f38952fe | 1756 | |
078e7b4a JB |
1757 | if (printflag) |
1758 | { | |
1759 | Vvalues = Fcons (val, Vvalues); | |
1760 | if (EQ (Vstandard_output, Qt)) | |
1761 | Fprin1 (val, Qnil); | |
1762 | else | |
1763 | Fprint (val, Qnil); | |
1764 | } | |
d11db2c8 RS |
1765 | |
1766 | first_sexp = 0; | |
078e7b4a JB |
1767 | } |
1768 | ||
8878319c | 1769 | build_load_history (sourcename, |
d11db2c8 | 1770 | stream || whole_buffer); |
b502a9a1 | 1771 | |
ae321d28 RS |
1772 | UNGCPRO; |
1773 | ||
078e7b4a JB |
1774 | unbind_to (count, Qnil); |
1775 | } | |
1776 | ||
1076254d | 1777 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1778 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1779 | When called from a Lisp program (i.e., not interactively), this |
1780 | function accepts up to five optional arguments: | |
5de38842 PJ |
1781 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1782 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1783 | A value of nil means discard it; anything else is stream for print. |
1784 | FILENAME specifies the file name to use for `load-history'. | |
1785 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1786 | invocation. | |
1787 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1788 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1789 | |
1790 | This function preserves the position of point. */) | |
1791 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1792 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1793 | { |
aed13378 | 1794 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1795 | Lisp_Object tem, buf; |
1796 | ||
9391b698 | 1797 | if (NILP (buffer)) |
228d4b1c JA |
1798 | buf = Fcurrent_buffer (); |
1799 | else | |
9391b698 | 1800 | buf = Fget_buffer (buffer); |
dfdb645c | 1801 | if (NILP (buf)) |
13febd85 | 1802 | error ("No such buffer"); |
228d4b1c | 1803 | |
1076254d | 1804 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1805 | tem = Qsymbolp; |
1806 | else | |
1807 | tem = printflag; | |
13febd85 RS |
1808 | |
1809 | if (NILP (filename)) | |
1810 | filename = XBUFFER (buf)->filename; | |
1811 | ||
3f39f996 | 1812 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1813 | specbind (Qstandard_output, tem); |
1814 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1815 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
4c03c46d KS |
1816 | readevalloop (buf, 0, filename, Feval, |
1817 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1818 | unbind_to (count, Qnil); |
228d4b1c JA |
1819 | |
1820 | return Qnil; | |
1821 | } | |
1822 | ||
976350af | 1823 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1824 | doc: /* Execute the region as Lisp code. |
1825 | When called from programs, expects two arguments, | |
1826 | giving starting and ending indices in the current buffer | |
1827 | of the text to be executed. | |
1828 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1829 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1830 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1831 | instead of `read' to read each expression. It gets one argument | |
1832 | which is the input stream for reading characters. | |
1833 | ||
1834 | This function does not move point. */) | |
1835 | (start, end, printflag, read_function) | |
976350af | 1836 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1837 | { |
aed13378 | 1838 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1839 | Lisp_Object tem, cbuf; |
1840 | ||
1841 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1842 | |
265a9e55 | 1843 | if (NILP (printflag)) |
078e7b4a JB |
1844 | tem = Qsymbolp; |
1845 | else | |
1846 | tem = printflag; | |
1847 | specbind (Qstandard_output, tem); | |
3f39f996 | 1848 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1849 | |
4c03c46d | 1850 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1851 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1852 | !NILP (printflag), Qnil, read_function, |
1853 | start, end); | |
078e7b4a JB |
1854 | |
1855 | return unbind_to (count, Qnil); | |
1856 | } | |
1857 | ||
078e7b4a JB |
1858 | \f |
1859 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1860 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1861 | If STREAM is nil, use the value of `standard-input' (which see). | |
1862 | STREAM or the value of `standard-input' may be: | |
1863 | a buffer (read from point and advance it) | |
1864 | a marker (read from where it points and advance it) | |
1865 | a function (call it with no arguments for each character, | |
1866 | call it with a char as argument to push a char back) | |
1867 | a string (takes text from string, starting at the beginning) | |
1868 | t (read text line using minibuffer and use it, or read from | |
1869 | standard input in batch mode). */) | |
1870 | (stream) | |
5be02dff | 1871 | Lisp_Object stream; |
078e7b4a | 1872 | { |
5be02dff KH |
1873 | if (NILP (stream)) |
1874 | stream = Vstandard_input; | |
1875 | if (EQ (stream, Qt)) | |
1876 | stream = Qread_char; | |
5be02dff | 1877 | if (EQ (stream, Qread_char)) |
078e7b4a | 1878 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1879 | |
abb13b09 | 1880 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1881 | } |
1882 | ||
1883 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1884 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1885 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1886 | START and END optionally delimit a substring of STRING from which to read; | |
1887 | they default to 0 and (length STRING) respectively. */) | |
1888 | (string, start, end) | |
078e7b4a JB |
1889 | Lisp_Object string, start, end; |
1890 | { | |
2530ceaf | 1891 | Lisp_Object ret; |
b7826503 | 1892 | CHECK_STRING (string); |
2530ceaf CW |
1893 | /* read_internal_start sets read_from_string_index. */ |
1894 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1895 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1896 | } |
078e7b4a | 1897 | |
abb13b09 CW |
1898 | /* Function to set up the global context we need in toplevel read |
1899 | calls. */ | |
1900 | static Lisp_Object | |
971de7fb DN |
1901 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
1902 | ||
1903 | /* Only used when stream is a string. */ | |
1904 | /* Only used when stream is a string. */ | |
abb13b09 CW |
1905 | { |
1906 | Lisp_Object retval; | |
078e7b4a | 1907 | |
abb13b09 | 1908 | readchar_count = 0; |
17634846 | 1909 | new_backquote_flag = 0; |
4ad679f9 | 1910 | read_objects = Qnil; |
abb13b09 CW |
1911 | if (EQ (Vread_with_symbol_positions, Qt) |
1912 | || EQ (Vread_with_symbol_positions, stream)) | |
1913 | Vread_symbol_positions_list = Qnil; | |
1914 | ||
8f924df7 KH |
1915 | if (STRINGP (stream) |
1916 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 CW |
1917 | { |
1918 | int startval, endval; | |
8f924df7 | 1919 | Lisp_Object string; |
078e7b4a | 1920 | |
8f924df7 KH |
1921 | if (STRINGP (stream)) |
1922 | string = stream; | |
1923 | else | |
1924 | string = XCAR (stream); | |
078e7b4a | 1925 | |
abb13b09 | 1926 | if (NILP (end)) |
8f924df7 | 1927 | endval = SCHARS (string); |
abb13b09 CW |
1928 | else |
1929 | { | |
1930 | CHECK_NUMBER (end); | |
1931 | endval = XINT (end); | |
8f924df7 KH |
1932 | if (endval < 0 || endval > SCHARS (string)) |
1933 | args_out_of_range (string, end); | |
abb13b09 | 1934 | } |
17634846 | 1935 | |
abb13b09 CW |
1936 | if (NILP (start)) |
1937 | startval = 0; | |
1938 | else | |
1939 | { | |
1940 | CHECK_NUMBER (start); | |
1941 | startval = XINT (start); | |
1942 | if (startval < 0 || startval > endval) | |
8f924df7 | 1943 | args_out_of_range (string, start); |
abb13b09 CW |
1944 | } |
1945 | read_from_string_index = startval; | |
8f924df7 | 1946 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
1947 | read_from_string_limit = endval; |
1948 | } | |
177c0ea7 | 1949 | |
abb13b09 CW |
1950 | retval = read0 (stream); |
1951 | if (EQ (Vread_with_symbol_positions, Qt) | |
1952 | || EQ (Vread_with_symbol_positions, stream)) | |
1953 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1954 | return retval; | |
078e7b4a JB |
1955 | } |
1956 | \f | |
336d4a9c KS |
1957 | |
1958 | /* Signal Qinvalid_read_syntax error. | |
1959 | S is error string of length N (if > 0) */ | |
1960 | ||
1961 | static void | |
971de7fb | 1962 | invalid_syntax (const char *s, int n) |
336d4a9c KS |
1963 | { |
1964 | if (!n) | |
1965 | n = strlen (s); | |
1966 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
1967 | } | |
1968 | ||
1969 | ||
6428369f KH |
1970 | /* Use this for recursive reads, in contexts where internal tokens |
1971 | are not allowed. */ | |
e28552a4 | 1972 | |
078e7b4a | 1973 | static Lisp_Object |
971de7fb | 1974 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
1975 | { |
1976 | register Lisp_Object val; | |
e28552a4 | 1977 | int c; |
078e7b4a | 1978 | |
17634846 | 1979 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
1980 | if (!c) |
1981 | return val; | |
078e7b4a | 1982 | |
336d4a9c KS |
1983 | xsignal1 (Qinvalid_read_syntax, |
1984 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
1985 | } |
1986 | \f | |
1987 | static int read_buffer_size; | |
1988 | static char *read_buffer; | |
1989 | ||
f6f79b37 | 1990 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 1991 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 1992 | |
078e7b4a | 1993 | static int |
971de7fb | 1994 | read_escape (Lisp_Object readcharfun, int stringp) |
078e7b4a JB |
1995 | { |
1996 | register int c = READCHAR; | |
9735b9ce | 1997 | /* \u allows up to four hex digits, \U up to eight. Default to the |
fffa137c | 1998 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 1999 | int unicode_hex_count = 4; |
f6f79b37 | 2000 | |
078e7b4a JB |
2001 | switch (c) |
2002 | { | |
f3849f25 | 2003 | case -1: |
da3b886d | 2004 | end_of_file_error (); |
f3849f25 | 2005 | |
078e7b4a | 2006 | case 'a': |
265a9e55 | 2007 | return '\007'; |
078e7b4a JB |
2008 | case 'b': |
2009 | return '\b'; | |
f405a585 RS |
2010 | case 'd': |
2011 | return 0177; | |
078e7b4a JB |
2012 | case 'e': |
2013 | return 033; | |
2014 | case 'f': | |
2015 | return '\f'; | |
2016 | case 'n': | |
2017 | return '\n'; | |
2018 | case 'r': | |
2019 | return '\r'; | |
2020 | case 't': | |
2021 | return '\t'; | |
2022 | case 'v': | |
2023 | return '\v'; | |
2024 | case '\n': | |
2025 | return -1; | |
e28552a4 | 2026 | case ' ': |
e7fc914b KH |
2027 | if (stringp) |
2028 | return -1; | |
2029 | return ' '; | |
078e7b4a JB |
2030 | |
2031 | case 'M': | |
2032 | c = READCHAR; | |
2033 | if (c != '-') | |
2034 | error ("Invalid escape character syntax"); | |
2035 | c = READCHAR; | |
2036 | if (c == '\\') | |
8792be66 | 2037 | c = read_escape (readcharfun, 0); |
7bd279cd | 2038 | return c | meta_modifier; |
f405a585 RS |
2039 | |
2040 | case 'S': | |
2041 | c = READCHAR; | |
2042 | if (c != '-') | |
2043 | error ("Invalid escape character syntax"); | |
2044 | c = READCHAR; | |
2045 | if (c == '\\') | |
8792be66 | 2046 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2047 | return c | shift_modifier; |
2048 | ||
2049 | case 'H': | |
2050 | c = READCHAR; | |
2051 | if (c != '-') | |
2052 | error ("Invalid escape character syntax"); | |
2053 | c = READCHAR; | |
2054 | if (c == '\\') | |
8792be66 | 2055 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2056 | return c | hyper_modifier; |
2057 | ||
2058 | case 'A': | |
2059 | c = READCHAR; | |
2060 | if (c != '-') | |
2061 | error ("Invalid escape character syntax"); | |
2062 | c = READCHAR; | |
2063 | if (c == '\\') | |
8792be66 | 2064 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2065 | return c | alt_modifier; |
2066 | ||
2067 | case 's': | |
2068 | c = READCHAR; | |
4d7528d0 | 2069 | if (stringp || c != '-') |
010b7eac RS |
2070 | { |
2071 | UNREAD (c); | |
2072 | return ' '; | |
2073 | } | |
7bd279cd RS |
2074 | c = READCHAR; |
2075 | if (c == '\\') | |
8792be66 | 2076 | c = read_escape (readcharfun, 0); |
7bd279cd | 2077 | return c | super_modifier; |
078e7b4a JB |
2078 | |
2079 | case 'C': | |
2080 | c = READCHAR; | |
2081 | if (c != '-') | |
2082 | error ("Invalid escape character syntax"); | |
2083 | case '^': | |
2084 | c = READCHAR; | |
2085 | if (c == '\\') | |
8792be66 | 2086 | c = read_escape (readcharfun, 0); |
164d590d KH |
2087 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2088 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2089 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2090 | return c | ctrl_modifier; | |
f405a585 RS |
2091 | /* ASCII control chars are made from letters (both cases), |
2092 | as well as the non-letters within 0100...0137. */ | |
2093 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2094 | return (c & (037 | ~0177)); | |
2095 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2096 | return (c & (037 | ~0177)); | |
078e7b4a | 2097 | else |
7bd279cd | 2098 | return c | ctrl_modifier; |
078e7b4a JB |
2099 | |
2100 | case '0': | |
2101 | case '1': | |
2102 | case '2': | |
2103 | case '3': | |
2104 | case '4': | |
2105 | case '5': | |
2106 | case '6': | |
2107 | case '7': | |
2108 | /* An octal escape, as in ANSI C. */ | |
2109 | { | |
2110 | register int i = c - '0'; | |
2111 | register int count = 0; | |
2112 | while (++count < 3) | |
2113 | { | |
2114 | if ((c = READCHAR) >= '0' && c <= '7') | |
2115 | { | |
2116 | i *= 8; | |
2117 | i += c - '0'; | |
2118 | } | |
2119 | else | |
2120 | { | |
2121 | UNREAD (c); | |
2122 | break; | |
2123 | } | |
2124 | } | |
177c0ea7 | 2125 | |
8f924df7 | 2126 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2127 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2128 | return i; |
2129 | } | |
2130 | ||
2131 | case 'x': | |
2132 | /* A hex escape, as in ANSI C. */ | |
2133 | { | |
2134 | int i = 0; | |
1571601b | 2135 | int count = 0; |
078e7b4a JB |
2136 | while (1) |
2137 | { | |
2138 | c = READCHAR; | |
2139 | if (c >= '0' && c <= '9') | |
2140 | { | |
2141 | i *= 16; | |
2142 | i += c - '0'; | |
2143 | } | |
2144 | else if ((c >= 'a' && c <= 'f') | |
2145 | || (c >= 'A' && c <= 'F')) | |
2146 | { | |
2147 | i *= 16; | |
2148 | if (c >= 'a' && c <= 'f') | |
2149 | i += c - 'a' + 10; | |
2150 | else | |
2151 | i += c - 'A' + 10; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | UNREAD (c); | |
2156 | break; | |
2157 | } | |
1571601b | 2158 | count++; |
078e7b4a | 2159 | } |
f6f79b37 | 2160 | |
1571601b | 2161 | if (count < 3 && i >= 0x80) |
8792be66 | 2162 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2163 | return i; |
2164 | } | |
2165 | ||
71b169b8 EZ |
2166 | case 'U': |
2167 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2168 | unicode_hex_count = 8; | |
2169 | case 'u': | |
2170 | ||
9735b9ce | 2171 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2172 | not arbitrarily in the source code, as in some other languages. */ |
2173 | { | |
a808f22d | 2174 | unsigned int i = 0; |
71b169b8 | 2175 | int count = 0; |
71b169b8 EZ |
2176 | |
2177 | while (++count <= unicode_hex_count) | |
2178 | { | |
2179 | c = READCHAR; | |
a3ac22e4 | 2180 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2181 | want. */ |
2182 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2183 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2184 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2185 | else | |
2186 | { | |
2187 | error ("Non-hex digit used for Unicode escape"); | |
2188 | break; | |
2189 | } | |
2190 | } | |
a808f22d KH |
2191 | if (i > 0x10FFFF) |
2192 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2193 | return i; |
71b169b8 EZ |
2194 | } |
2195 | ||
078e7b4a JB |
2196 | default: |
2197 | return c; | |
2198 | } | |
2199 | } | |
2200 | ||
bf5d1a17 GM |
2201 | /* Read an integer in radix RADIX using READCHARFUN to read |
2202 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2203 | read error is signaled . Value is the integer read. Signals an | |
2204 | error if encountering invalid read syntax or if RADIX is out of | |
2205 | range. */ | |
2206 | ||
2207 | static Lisp_Object | |
971de7fb | 2208 | read_integer (Lisp_Object readcharfun, int radix) |
bf5d1a17 | 2209 | { |
5e37dc22 | 2210 | int ndigits = 0, invalid_p, c, sign = 0; |
155a6764 SM |
2211 | /* We use a floating point number because */ |
2212 | double number = 0; | |
bf5d1a17 GM |
2213 | |
2214 | if (radix < 2 || radix > 36) | |
2215 | invalid_p = 1; | |
2216 | else | |
2217 | { | |
2218 | number = ndigits = invalid_p = 0; | |
2219 | sign = 1; | |
2220 | ||
2221 | c = READCHAR; | |
2222 | if (c == '-') | |
2223 | { | |
2224 | c = READCHAR; | |
2225 | sign = -1; | |
2226 | } | |
2227 | else if (c == '+') | |
2228 | c = READCHAR; | |
177c0ea7 | 2229 | |
bf5d1a17 GM |
2230 | while (c >= 0) |
2231 | { | |
2232 | int digit; | |
177c0ea7 | 2233 | |
bf5d1a17 GM |
2234 | if (c >= '0' && c <= '9') |
2235 | digit = c - '0'; | |
2236 | else if (c >= 'a' && c <= 'z') | |
2237 | digit = c - 'a' + 10; | |
2238 | else if (c >= 'A' && c <= 'Z') | |
2239 | digit = c - 'A' + 10; | |
2240 | else | |
b632fa48 GM |
2241 | { |
2242 | UNREAD (c); | |
2243 | break; | |
2244 | } | |
bf5d1a17 GM |
2245 | |
2246 | if (digit < 0 || digit >= radix) | |
2247 | invalid_p = 1; | |
2248 | ||
2249 | number = radix * number + digit; | |
2250 | ++ndigits; | |
2251 | c = READCHAR; | |
2252 | } | |
2253 | } | |
2254 | ||
2255 | if (ndigits == 0 || invalid_p) | |
2256 | { | |
2257 | char buf[50]; | |
2258 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2259 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2260 | } |
2261 | ||
155a6764 | 2262 | return make_fixnum_or_float (sign * number); |
bf5d1a17 GM |
2263 | } |
2264 | ||
2265 | ||
6428369f KH |
2266 | /* If the next token is ')' or ']' or '.', we store that character |
2267 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2268 | zero in *PCH and we read and return one lisp object. |
2269 | ||
2270 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2271 | ||
078e7b4a | 2272 | static Lisp_Object |
971de7fb | 2273 | read1 (register Lisp_Object readcharfun, int *pch, int first_in_list) |
078e7b4a JB |
2274 | { |
2275 | register int c; | |
4ad679f9 | 2276 | int uninterned_symbol = 0; |
1202434b | 2277 | int multibyte; |
4ad679f9 | 2278 | |
6428369f | 2279 | *pch = 0; |
8792be66 | 2280 | load_each_byte = 0; |
078e7b4a JB |
2281 | |
2282 | retry: | |
2283 | ||
1202434b | 2284 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2285 | if (c < 0) |
2286 | end_of_file_error (); | |
078e7b4a JB |
2287 | |
2288 | switch (c) | |
2289 | { | |
2290 | case '(': | |
2291 | return read_list (0, readcharfun); | |
2292 | ||
2293 | case '[': | |
c15cfd1f | 2294 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2295 | |
2296 | case ')': | |
2297 | case ']': | |
078e7b4a | 2298 | { |
6428369f KH |
2299 | *pch = c; |
2300 | return Qnil; | |
078e7b4a JB |
2301 | } |
2302 | ||
2303 | case '#': | |
200f684e | 2304 | c = READCHAR; |
f19a0f5b TZ |
2305 | if (c == 's') |
2306 | { | |
2307 | c = READCHAR; | |
2308 | if (c == '(') | |
2309 | { | |
2310 | /* Accept extended format for hashtables (extensible to | |
2311 | other types), e.g. | |
2312 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ | |
2313 | Lisp_Object tmp = read_list (0, readcharfun); | |
2314 | Lisp_Object head = CAR_SAFE (tmp); | |
2315 | Lisp_Object data = Qnil; | |
2316 | Lisp_Object val = Qnil; | |
2317 | /* The size is 2 * number of allowed keywords to | |
2318 | make-hash-table. */ | |
9735b9ce | 2319 | Lisp_Object params[10]; |
f19a0f5b TZ |
2320 | Lisp_Object ht; |
2321 | Lisp_Object key = Qnil; | |
2322 | int param_count = 0; | |
9735b9ce | 2323 | |
f19a0f5b TZ |
2324 | if (!EQ (head, Qhash_table)) |
2325 | error ("Invalid extended read marker at head of #s list " | |
2326 | "(only hash-table allowed)"); | |
9735b9ce | 2327 | |
f19a0f5b TZ |
2328 | tmp = CDR_SAFE (tmp); |
2329 | ||
2330 | /* This is repetitive but fast and simple. */ | |
2331 | params[param_count] = QCsize; | |
2332 | params[param_count+1] = Fplist_get (tmp, Qsize); | |
2333 | if (!NILP (params[param_count+1])) | |
2334 | param_count+=2; | |
2335 | ||
2336 | params[param_count] = QCtest; | |
2337 | params[param_count+1] = Fplist_get (tmp, Qtest); | |
2338 | if (!NILP (params[param_count+1])) | |
2339 | param_count+=2; | |
2340 | ||
2341 | params[param_count] = QCweakness; | |
2342 | params[param_count+1] = Fplist_get (tmp, Qweakness); | |
2343 | if (!NILP (params[param_count+1])) | |
2344 | param_count+=2; | |
2345 | ||
2346 | params[param_count] = QCrehash_size; | |
2347 | params[param_count+1] = Fplist_get (tmp, Qrehash_size); | |
2348 | if (!NILP (params[param_count+1])) | |
2349 | param_count+=2; | |
2350 | ||
2351 | params[param_count] = QCrehash_threshold; | |
2352 | params[param_count+1] = Fplist_get (tmp, Qrehash_threshold); | |
2353 | if (!NILP (params[param_count+1])) | |
2354 | param_count+=2; | |
2355 | ||
2356 | /* This is the hashtable data. */ | |
2357 | data = Fplist_get (tmp, Qdata); | |
2358 | ||
2359 | /* Now use params to make a new hashtable and fill it. */ | |
2360 | ht = Fmake_hash_table (param_count, params); | |
9735b9ce | 2361 | |
f19a0f5b TZ |
2362 | while (CONSP (data)) |
2363 | { | |
2364 | key = XCAR (data); | |
2365 | data = XCDR (data); | |
2366 | if (!CONSP (data)) | |
2367 | error ("Odd number of elements in hashtable data"); | |
2368 | val = XCAR (data); | |
2369 | data = XCDR (data); | |
2370 | Fputhash (key, val, ht); | |
2371 | } | |
9735b9ce | 2372 | |
f19a0f5b TZ |
2373 | return ht; |
2374 | } | |
2375 | } | |
c2390933 RS |
2376 | if (c == '^') |
2377 | { | |
2378 | c = READCHAR; | |
2379 | if (c == '[') | |
2380 | { | |
2381 | Lisp_Object tmp; | |
c15cfd1f | 2382 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2383 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2384 | error ("Invalid size char-table"); |
985773c9 | 2385 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2386 | return tmp; |
2387 | } | |
3701b5de KH |
2388 | else if (c == '^') |
2389 | { | |
2390 | c = READCHAR; | |
2391 | if (c == '[') | |
2392 | { | |
2393 | Lisp_Object tmp; | |
1571601b | 2394 | int depth, size; |
8f924df7 | 2395 | |
c15cfd1f | 2396 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2397 | if (!INTEGERP (AREF (tmp, 0))) |
2398 | error ("Invalid depth in char-table"); | |
2399 | depth = XINT (AREF (tmp, 0)); | |
2400 | if (depth < 1 || depth > 3) | |
2401 | error ("Invalid depth in char-table"); | |
41482d36 | 2402 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2403 | if (chartab_size [depth] != size) |
3701b5de | 2404 | error ("Invalid size char-table"); |
985773c9 | 2405 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2406 | return tmp; |
2407 | } | |
336d4a9c | 2408 | invalid_syntax ("#^^", 3); |
3701b5de | 2409 | } |
336d4a9c | 2410 | invalid_syntax ("#^", 2); |
c2390933 RS |
2411 | } |
2412 | if (c == '&') | |
2413 | { | |
2414 | Lisp_Object length; | |
2415 | length = read1 (readcharfun, pch, first_in_list); | |
2416 | c = READCHAR; | |
2417 | if (c == '"') | |
2418 | { | |
2419 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2420 | int size_in_chars |
2421 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2422 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2423 | |
2424 | UNREAD (c); | |
2425 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2426 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2427 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2428 | /* We used to print 1 char too many |
2429 | when the number of bits was a multiple of 8. | |
2430 | Accept such input in case it came from an old | |
2431 | version. */ | |
2432 | && ! (XFASTINT (length) | |
327719ee | 2433 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2434 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2435 | |
c2390933 | 2436 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2437 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2438 | size_in_chars); |
67d3b149 | 2439 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2440 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2441 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2442 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2443 | return val; |
2444 | } | |
336d4a9c | 2445 | invalid_syntax ("#&...", 5); |
c2390933 | 2446 | } |
200f684e RS |
2447 | if (c == '[') |
2448 | { | |
2449 | /* Accept compiled functions at read-time so that we don't have to | |
2450 | build them using function calls. */ | |
748ef62f | 2451 | Lisp_Object tmp; |
c15cfd1f | 2452 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2453 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2454 | XVECTOR (tmp)->contents); | |
200f684e | 2455 | } |
748ef62f RS |
2456 | if (c == '(') |
2457 | { | |
2458 | Lisp_Object tmp; | |
2459 | struct gcpro gcpro1; | |
e28552a4 | 2460 | int ch; |
748ef62f RS |
2461 | |
2462 | /* Read the string itself. */ | |
17634846 | 2463 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2464 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2465 | invalid_syntax ("#", 1); |
748ef62f RS |
2466 | GCPRO1 (tmp); |
2467 | /* Read the intervals and their properties. */ | |
2468 | while (1) | |
2469 | { | |
2470 | Lisp_Object beg, end, plist; | |
2471 | ||
17634846 | 2472 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2473 | end = plist = Qnil; |
6428369f KH |
2474 | if (ch == ')') |
2475 | break; | |
2476 | if (ch == 0) | |
17634846 | 2477 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2478 | if (ch == 0) |
17634846 | 2479 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2480 | if (ch) |
336d4a9c | 2481 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2482 | Fset_text_properties (beg, end, plist, tmp); |
2483 | } | |
2484 | UNGCPRO; | |
2485 | return tmp; | |
2486 | } | |
177c0ea7 | 2487 | |
20ea2964 RS |
2488 | /* #@NUMBER is used to skip NUMBER following characters. |
2489 | That's used in .elc files to skip over doc strings | |
2490 | and function definitions. */ | |
2491 | if (c == '@') | |
2492 | { | |
2493 | int i, nskip = 0; | |
2494 | ||
8792be66 | 2495 | load_each_byte = 1; |
20ea2964 RS |
2496 | /* Read a decimal integer. */ |
2497 | while ((c = READCHAR) >= 0 | |
2498 | && c >= '0' && c <= '9') | |
2499 | { | |
2500 | nskip *= 10; | |
2501 | nskip += c - '0'; | |
2502 | } | |
2503 | if (c >= 0) | |
2504 | UNREAD (c); | |
177c0ea7 | 2505 | |
8792be66 KH |
2506 | if (load_force_doc_strings |
2507 | && (EQ (readcharfun, Qget_file_char) | |
2508 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2509 | { |
2510 | /* If we are supposed to force doc strings into core right now, | |
2511 | record the last string that we skipped, | |
2512 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2513 | |
2514 | /* But first exchange saved_doc_string | |
2515 | with prev_saved_doc_string, so we save two strings. */ | |
2516 | { | |
2517 | char *temp = saved_doc_string; | |
2518 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2519 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2520 | int temp_len = saved_doc_string_length; |
2521 | ||
2522 | saved_doc_string = prev_saved_doc_string; | |
2523 | saved_doc_string_size = prev_saved_doc_string_size; | |
2524 | saved_doc_string_position = prev_saved_doc_string_position; | |
2525 | saved_doc_string_length = prev_saved_doc_string_length; | |
2526 | ||
2527 | prev_saved_doc_string = temp; | |
2528 | prev_saved_doc_string_size = temp_size; | |
2529 | prev_saved_doc_string_position = temp_pos; | |
2530 | prev_saved_doc_string_length = temp_len; | |
2531 | } | |
2532 | ||
b2a30870 RS |
2533 | if (saved_doc_string_size == 0) |
2534 | { | |
2535 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2536 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2537 | } |
2538 | if (nskip > saved_doc_string_size) | |
2539 | { | |
2540 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2541 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2542 | saved_doc_string_size); | |
b2a30870 RS |
2543 | } |
2544 | ||
68c45bf0 | 2545 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2546 | |
2547 | /* Copy that many characters into saved_doc_string. */ | |
2548 | for (i = 0; i < nskip && c >= 0; i++) | |
2549 | saved_doc_string[i] = c = READCHAR; | |
2550 | ||
2551 | saved_doc_string_length = i; | |
2552 | } | |
2553 | else | |
b2a30870 RS |
2554 | { |
2555 | /* Skip that many characters. */ | |
2556 | for (i = 0; i < nskip && c >= 0; i++) | |
2557 | c = READCHAR; | |
2558 | } | |
d49f0c1a | 2559 | |
8792be66 | 2560 | load_each_byte = 0; |
20ea2964 RS |
2561 | goto retry; |
2562 | } | |
e2518d02 RS |
2563 | if (c == '!') |
2564 | { | |
2565 | /* #! appears at the beginning of an executable file. | |
2566 | Skip the first line. */ | |
225c7a07 | 2567 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2568 | c = READCHAR; |
2569 | goto retry; | |
2570 | } | |
20ea2964 RS |
2571 | if (c == '$') |
2572 | return Vload_file_name; | |
2b6cae0c RS |
2573 | if (c == '\'') |
2574 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2575 | /* #:foo is the uninterned symbol named foo. */ |
2576 | if (c == ':') | |
2577 | { | |
2578 | uninterned_symbol = 1; | |
2579 | c = READCHAR; | |
2580 | goto default_label; | |
2581 | } | |
2582 | /* Reader forms that can reuse previously read objects. */ | |
2583 | if (c >= '0' && c <= '9') | |
2584 | { | |
2585 | int n = 0; | |
2586 | Lisp_Object tem; | |
2b6cae0c | 2587 | |
4ad679f9 EN |
2588 | /* Read a non-negative integer. */ |
2589 | while (c >= '0' && c <= '9') | |
2590 | { | |
2591 | n *= 10; | |
2592 | n += c - '0'; | |
2593 | c = READCHAR; | |
2594 | } | |
2595 | /* #n=object returns object, but associates it with n for #n#. */ | |
91f68422 | 2596 | if (c == '=' && !NILP (Vread_circle)) |
4ad679f9 | 2597 | { |
9e062b6c RS |
2598 | /* Make a placeholder for #n# to use temporarily */ |
2599 | Lisp_Object placeholder; | |
2600 | Lisp_Object cell; | |
2601 | ||
9735b9ce | 2602 | placeholder = Fcons (Qnil, Qnil); |
9e062b6c RS |
2603 | cell = Fcons (make_number (n), placeholder); |
2604 | read_objects = Fcons (cell, read_objects); | |
2605 | ||
2606 | /* Read the object itself. */ | |
4ad679f9 | 2607 | tem = read0 (readcharfun); |
9e062b6c RS |
2608 | |
2609 | /* Now put it everywhere the placeholder was... */ | |
2610 | substitute_object_in_subtree (tem, placeholder); | |
2611 | ||
2612 | /* ...and #n# will use the real value from now on. */ | |
2613 | Fsetcdr (cell, tem); | |
177c0ea7 | 2614 | |
4ad679f9 EN |
2615 | return tem; |
2616 | } | |
2617 | /* #n# returns a previously read object. */ | |
91f68422 | 2618 | if (c == '#' && !NILP (Vread_circle)) |
4ad679f9 EN |
2619 | { |
2620 | tem = Fassq (make_number (n), read_objects); | |
2621 | if (CONSP (tem)) | |
2622 | return XCDR (tem); | |
2623 | /* Fall through to error message. */ | |
2624 | } | |
bf5d1a17 GM |
2625 | else if (c == 'r' || c == 'R') |
2626 | return read_integer (readcharfun, n); | |
177c0ea7 | 2627 | |
4ad679f9 EN |
2628 | /* Fall through to error message. */ |
2629 | } | |
bf5d1a17 GM |
2630 | else if (c == 'x' || c == 'X') |
2631 | return read_integer (readcharfun, 16); | |
2632 | else if (c == 'o' || c == 'O') | |
2633 | return read_integer (readcharfun, 8); | |
2634 | else if (c == 'b' || c == 'B') | |
2635 | return read_integer (readcharfun, 2); | |
20ea2964 | 2636 | |
200f684e | 2637 | UNREAD (c); |
336d4a9c | 2638 | invalid_syntax ("#", 1); |
078e7b4a JB |
2639 | |
2640 | case ';': | |
2641 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2642 | goto retry; | |
2643 | ||
2644 | case '\'': | |
2645 | { | |
2646 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2647 | } | |
2648 | ||
17634846 | 2649 | case '`': |
288cf4e9 SM |
2650 | /* Transition from old-style to new-style: |
2651 | If we see "(`" it used to mean old-style, which usually works | |
2652 | fine because ` should almost never appear in such a position | |
2653 | for new-style. But occasionally we need "(`" to mean new | |
2654 | style, so we try to distinguish the two by the fact that we | |
2655 | can either write "( `foo" or "(` foo", where the first | |
2656 | intends to use new-style whereas the second intends to use | |
2657 | old-style. For Emacs-25, we should completely remove this | |
2658 | first_in_list exception (old-style can still be obtained via | |
2659 | "(\`" anyway). */ | |
2660 | if (first_in_list && (c = READCHAR, UNREAD (c), c == ' ')) | |
9ecb827b SM |
2661 | { |
2662 | Vold_style_backquotes = Qt; | |
2663 | goto default_label; | |
2664 | } | |
17634846 RS |
2665 | else |
2666 | { | |
2667 | Lisp_Object value; | |
2668 | ||
0ffbbdeb | 2669 | new_backquote_flag++; |
17634846 | 2670 | value = read0 (readcharfun); |
0ffbbdeb | 2671 | new_backquote_flag--; |
17634846 RS |
2672 | |
2673 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2674 | } | |
2675 | ||
2676 | case ',': | |
2677 | if (new_backquote_flag) | |
2678 | { | |
2679 | Lisp_Object comma_type = Qnil; | |
2680 | Lisp_Object value; | |
2681 | int ch = READCHAR; | |
2682 | ||
2683 | if (ch == '@') | |
2684 | comma_type = Qcomma_at; | |
2685 | else if (ch == '.') | |
2686 | comma_type = Qcomma_dot; | |
2687 | else | |
2688 | { | |
2689 | if (ch >= 0) UNREAD (ch); | |
2690 | comma_type = Qcomma; | |
2691 | } | |
2692 | ||
0ffbbdeb | 2693 | new_backquote_flag--; |
17634846 | 2694 | value = read0 (readcharfun); |
0ffbbdeb | 2695 | new_backquote_flag++; |
17634846 RS |
2696 | return Fcons (comma_type, Fcons (value, Qnil)); |
2697 | } | |
2698 | else | |
9ecb827b SM |
2699 | { |
2700 | Vold_style_backquotes = Qt; | |
2701 | goto default_label; | |
2702 | } | |
17634846 | 2703 | |
078e7b4a JB |
2704 | case '?': |
2705 | { | |
8792be66 | 2706 | int modifiers; |
df9c2be7 KS |
2707 | int next_char; |
2708 | int ok; | |
f6f79b37 | 2709 | |
078e7b4a | 2710 | c = READCHAR; |
9c97398c GM |
2711 | if (c < 0) |
2712 | end_of_file_error (); | |
078e7b4a | 2713 | |
b9284371 KS |
2714 | /* Accept `single space' syntax like (list ? x) where the |
2715 | whitespace character is SPC or TAB. | |
2716 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2717 | as there are well-established escape sequences for these. */ | |
2718 | if (c == ' ' || c == '\t') | |
2719 | return make_number (c); | |
2720 | ||
078e7b4a | 2721 | if (c == '\\') |
8792be66 KH |
2722 | c = read_escape (readcharfun, 0); |
2723 | modifiers = c & CHAR_MODIFIER_MASK; | |
2724 | c &= ~CHAR_MODIFIER_MASK; | |
2725 | if (CHAR_BYTE8_P (c)) | |
2726 | c = CHAR_TO_BYTE8 (c); | |
2727 | c |= modifiers; | |
078e7b4a | 2728 | |
df9c2be7 KS |
2729 | next_char = READCHAR; |
2730 | if (next_char == '.') | |
2731 | { | |
2732 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2733 | int next_next_char = READCHAR; | |
2734 | UNREAD (next_next_char); | |
2735 | ||
2736 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2737 | || (next_next_char < 0200 |
2738 | && (index ("\"';([#?", next_next_char) | |
2739 | || (!first_in_list && next_next_char == '`') | |
2740 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2741 | } |
2742 | else | |
2743 | { | |
2744 | ok = (next_char <= 040 | |
e613ea97 KH |
2745 | || (next_char < 0200 |
2746 | && (index ("\"';()[]#?", next_char) | |
2747 | || (!first_in_list && next_char == '`') | |
2748 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2749 | } |
2750 | UNREAD (next_char); | |
336d4a9c KS |
2751 | if (ok) |
2752 | return make_number (c); | |
37cd4238 | 2753 | |
336d4a9c | 2754 | invalid_syntax ("?", 1); |
078e7b4a JB |
2755 | } |
2756 | ||
00a9a935 | 2757 | case '"': |
078e7b4a | 2758 | { |
a742d646 GM |
2759 | char *p = read_buffer; |
2760 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2761 | register int c; |
1571601b KH |
2762 | /* Nonzero if we saw an escape sequence specifying |
2763 | a multibyte character. */ | |
e7fc914b | 2764 | int force_multibyte = 0; |
1571601b | 2765 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2766 | a single-byte character. */ |
2767 | int force_singlebyte = 0; | |
078e7b4a | 2768 | int cancel = 0; |
5150eeec | 2769 | int nchars = 0; |
078e7b4a JB |
2770 | |
2771 | while ((c = READCHAR) >= 0 | |
2772 | && c != '\"') | |
2773 | { | |
449fea39 | 2774 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2775 | { |
5d65df0d GM |
2776 | int offset = p - read_buffer; |
2777 | read_buffer = (char *) xrealloc (read_buffer, | |
2778 | read_buffer_size *= 2); | |
2779 | p = read_buffer + offset; | |
078e7b4a JB |
2780 | end = read_buffer + read_buffer_size; |
2781 | } | |
bed23cb2 | 2782 | |
078e7b4a | 2783 | if (c == '\\') |
03e88613 | 2784 | { |
1571601b | 2785 | int modifiers; |
f6f79b37 | 2786 | |
8792be66 | 2787 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2788 | |
2789 | /* C is -1 if \ newline has just been seen */ | |
2790 | if (c == -1) | |
03e88613 | 2791 | { |
bed23cb2 RS |
2792 | if (p == read_buffer) |
2793 | cancel = 1; | |
03e88613 RS |
2794 | continue; |
2795 | } | |
bed23cb2 | 2796 | |
1571601b KH |
2797 | modifiers = c & CHAR_MODIFIER_MASK; |
2798 | c = c & ~CHAR_MODIFIER_MASK; | |
2799 | ||
8792be66 | 2800 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2801 | force_singlebyte = 1; |
8792be66 | 2802 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2803 | force_multibyte = 1; |
8792be66 | 2804 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2805 | { |
2806 | /* Allow `\C- ' and `\C-?'. */ | |
2807 | if (modifiers == CHAR_CTL) | |
2808 | { | |
2809 | if (c == ' ') | |
2810 | c = 0, modifiers = 0; | |
2811 | else if (c == '?') | |
2812 | c = 127, modifiers = 0; | |
2813 | } | |
2814 | if (modifiers & CHAR_SHIFT) | |
2815 | { | |
2816 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2817 | if (c >= 'A' && c <= 'Z') | |
2818 | modifiers &= ~CHAR_SHIFT; | |
2819 | else if (c >= 'a' && c <= 'z') | |
2820 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2821 | } | |
2822 | ||
2823 | if (modifiers & CHAR_META) | |
2824 | { | |
2825 | /* Move the meta bit to the right place for a | |
2826 | string. */ | |
2827 | modifiers &= ~CHAR_META; | |
2828 | c = BYTE8_TO_CHAR (c | 0x80); | |
2829 | force_singlebyte = 1; | |
2830 | } | |
2831 | } | |
5150eeec | 2832 | |
1571601b KH |
2833 | /* Any modifiers remaining are invalid. */ |
2834 | if (modifiers) | |
2835 | error ("Invalid modifier in string"); | |
2836 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2837 | } |
8792be66 | 2838 | else |
5150eeec | 2839 | { |
1571601b | 2840 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2841 | if (CHAR_BYTE8_P (c)) |
2842 | force_singlebyte = 1; | |
2843 | else if (! ASCII_CHAR_P (c)) | |
2844 | force_multibyte = 1; | |
f943104a | 2845 | } |
5150eeec | 2846 | nchars++; |
078e7b4a | 2847 | } |
5150eeec | 2848 | |
6f7f43d5 | 2849 | if (c < 0) |
9c97398c | 2850 | end_of_file_error (); |
078e7b4a JB |
2851 | |
2852 | /* If purifying, and string starts with \ newline, | |
2853 | return zero instead. This is for doc strings | |
08564963 | 2854 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2855 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2856 | return make_number (0); |
2857 | ||
1571601b KH |
2858 | if (force_multibyte) |
2859 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2860 | ; |
1571601b | 2861 | else if (force_singlebyte) |
a742d646 | 2862 | { |
1571601b KH |
2863 | nchars = str_as_unibyte (read_buffer, p - read_buffer); |
2864 | p = read_buffer + nchars; | |
a742d646 | 2865 | } |
e28552a4 | 2866 | else |
1571601b | 2867 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2868 | ; |
e7fc914b | 2869 | |
abb13b09 CW |
2870 | /* We want readchar_count to be the number of characters, not |
2871 | bytes. Hence we adjust for multibyte characters in the | |
2872 | string. ... But it doesn't seem to be necessary, because | |
2873 | READCHAR *does* read multibyte characters from buffers. */ | |
2874 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2875 | if (read_pure) |
491f16a2 | 2876 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2877 | (force_multibyte |
2878 | || (p - read_buffer != nchars))); | |
491f16a2 | 2879 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2880 | (force_multibyte |
2881 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2882 | } |
2883 | ||
109d300c JB |
2884 | case '.': |
2885 | { | |
109d300c JB |
2886 | int next_char = READCHAR; |
2887 | UNREAD (next_char); | |
2888 | ||
035eec48 | 2889 | if (next_char <= 040 |
e613ea97 | 2890 | || (next_char < 0200 |
95af0924 KS |
2891 | && (index ("\"';([#?", next_char) |
2892 | || (!first_in_list && next_char == '`') | |
2893 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2894 | { |
6428369f KH |
2895 | *pch = c; |
2896 | return Qnil; | |
109d300c JB |
2897 | } |
2898 | ||
2899 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2900 | below will now loop at least once, assuring that we will not | |
2901 | try to UNREAD two characters in a row. */ | |
2902 | } | |
078e7b4a | 2903 | default: |
17634846 | 2904 | default_label: |
88852d45 | 2905 | if (c <= 040) goto retry; |
adef3de7 RS |
2906 | if (c == 0x8a0) /* NBSP */ |
2907 | goto retry; | |
078e7b4a | 2908 | { |
38404229 | 2909 | char *p = read_buffer; |
481c6336 | 2910 | int quoted = 0; |
078e7b4a JB |
2911 | |
2912 | { | |
38404229 | 2913 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2914 | |
6f7f43d5 | 2915 | while (c > 040 |
adef3de7 | 2916 | && c != 0x8a0 /* NBSP */ |
e613ea97 KH |
2917 | && (c >= 0200 |
2918 | || (!index ("\"';()[]#", c) | |
2919 | && !(!first_in_list && c == '`') | |
2920 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2921 | { |
449fea39 | 2922 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2923 | { |
5d65df0d GM |
2924 | int offset = p - read_buffer; |
2925 | read_buffer = (char *) xrealloc (read_buffer, | |
2926 | read_buffer_size *= 2); | |
2927 | p = read_buffer + offset; | |
078e7b4a JB |
2928 | end = read_buffer + read_buffer_size; |
2929 | } | |
177c0ea7 | 2930 | |
078e7b4a | 2931 | if (c == '\\') |
481c6336 RS |
2932 | { |
2933 | c = READCHAR; | |
4ab11c09 GM |
2934 | if (c == -1) |
2935 | end_of_file_error (); | |
481c6336 RS |
2936 | quoted = 1; |
2937 | } | |
6f7f43d5 | 2938 | |
1202434b KH |
2939 | if (multibyte) |
2940 | p += CHAR_STRING (c, p); | |
2941 | else | |
2942 | *p++ = c; | |
078e7b4a JB |
2943 | c = READCHAR; |
2944 | } | |
2945 | ||
2946 | if (p == end) | |
2947 | { | |
5d65df0d GM |
2948 | int offset = p - read_buffer; |
2949 | read_buffer = (char *) xrealloc (read_buffer, | |
2950 | read_buffer_size *= 2); | |
2951 | p = read_buffer + offset; | |
2952 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2953 | } |
2954 | *p = 0; | |
2955 | if (c >= 0) | |
2956 | UNREAD (c); | |
2957 | } | |
2958 | ||
4ad679f9 | 2959 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2960 | { |
2961 | register char *p1; | |
481c6336 RS |
2962 | p1 = read_buffer; |
2963 | if (*p1 == '+' || *p1 == '-') p1++; | |
2964 | /* Is it an integer? */ | |
2965 | if (p1 != p) | |
2966 | { | |
2967 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2968 | /* Integers can have trailing decimal points. */ |
2969 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2970 | if (p1 == p) |
2971 | /* It is an integer. */ | |
2972 | { | |
481c6336 RS |
2973 | if (p1[-1] == '.') |
2974 | p1[-1] = '\0'; | |
155a6764 SM |
2975 | { |
2976 | /* EMACS_INT n = atol (read_buffer); */ | |
2977 | char *endptr = NULL; | |
2978 | EMACS_INT n = (errno = 0, | |
2979 | strtol (read_buffer, &endptr, 10)); | |
2980 | if (errno == ERANGE && endptr) | |
2981 | { | |
2982 | Lisp_Object args | |
2983 | = Fcons (make_string (read_buffer, | |
2984 | endptr - read_buffer), | |
2985 | Qnil); | |
2986 | xsignal (Qoverflow_error, args); | |
2987 | } | |
2988 | return make_fixnum_or_float (n); | |
2989 | } | |
481c6336 RS |
2990 | } |
2991 | } | |
be95bee9 | 2992 | if (isfloat_string (read_buffer, 0)) |
eb659c41 | 2993 | { |
a8972052 PE |
2994 | /* Compute NaN and infinities using 0.0 in a variable, |
2995 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2996 | than we are. */ |
3c329963 | 2997 | double zero = 0.0; |
a8972052 PE |
2998 | |
2999 | double value; | |
3000 | ||
3001 | /* Negate the value ourselves. This treats 0, NaNs, | |
3002 | and infinity properly on IEEE floating point hosts, | |
3003 | and works around a common bug where atof ("-0.0") | |
3004 | drops the sign. */ | |
3005 | int negative = read_buffer[0] == '-'; | |
3006 | ||
3007 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 3008 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 3009 | switch (p[-1]) |
eb659c41 | 3010 | { |
a8972052 PE |
3011 | case 'F': |
3012 | value = 1.0 / zero; | |
3013 | break; | |
3014 | case 'N': | |
3015 | value = zero / zero; | |
7690cbb0 RS |
3016 | |
3017 | /* If that made a "negative" NaN, negate it. */ | |
3018 | ||
3019 | { | |
3020 | int i; | |
3021 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
3022 | ||
3023 | u_data.d = value; | |
3024 | u_minus_zero.d = - 0.0; | |
3025 | for (i = 0; i < sizeof (double); i++) | |
3026 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3027 | { | |
3028 | value = - value; | |
3029 | break; | |
3030 | } | |
3031 | } | |
3032 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
3033 | break; |
3034 | default: | |
3035 | value = atof (read_buffer + negative); | |
3036 | break; | |
eb659c41 | 3037 | } |
a8972052 PE |
3038 | |
3039 | return make_float (negative ? - value : value); | |
eb659c41 | 3040 | } |
481c6336 | 3041 | } |
abb13b09 | 3042 | { |
e93abe3d KH |
3043 | Lisp_Object name, result; |
3044 | EMACS_INT nbytes = p - read_buffer; | |
3045 | EMACS_INT nchars | |
3046 | = (multibyte ? multibyte_chars_in_text (read_buffer, nbytes) | |
3047 | : nbytes); | |
3048 | ||
3049 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
3050 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
3051 | else | |
3052 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
3053 | result = (uninterned_symbol ? Fmake_symbol (name) | |
3054 | : Fintern (name, Qnil)); | |
1202434b | 3055 | |
abb13b09 CW |
3056 | if (EQ (Vread_with_symbol_positions, Qt) |
3057 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 3058 | Vread_symbol_positions_list = |
abb13b09 CW |
3059 | /* Kind of a hack; this will probably fail if characters |
3060 | in the symbol name were escaped. Not really a big | |
3061 | deal, though. */ | |
f74db720 SM |
3062 | Fcons (Fcons (result, |
3063 | make_number (readchar_count | |
3064 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
3065 | Vread_symbol_positions_list); |
3066 | return result; | |
3067 | } | |
078e7b4a JB |
3068 | } |
3069 | } | |
3070 | } | |
3071 | \f | |
9e062b6c RS |
3072 | |
3073 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
3074 | static Lisp_Object seen_list; | |
3075 | ||
3076 | static void | |
971de7fb | 3077 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
3078 | { |
3079 | Lisp_Object check_object; | |
3080 | ||
3081 | /* We haven't seen any objects when we start. */ | |
3082 | seen_list = Qnil; | |
3083 | ||
3084 | /* Make all the substitutions. */ | |
3085 | check_object | |
3086 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3087 | |
9e062b6c RS |
3088 | /* Clear seen_list because we're done with it. */ |
3089 | seen_list = Qnil; | |
3090 | ||
3091 | /* The returned object here is expected to always eq the | |
3092 | original. */ | |
3093 | if (!EQ (check_object, object)) | |
3094 | error ("Unexpected mutation error in reader"); | |
3095 | } | |
3096 | ||
3097 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3098 | #define SUBSTITUTE(get_val, set_val) \ |
3099 | do { \ | |
3100 | Lisp_Object old_value = get_val; \ | |
3101 | Lisp_Object true_value \ | |
3102 | = substitute_object_recurse (object, placeholder, \ | |
3103 | old_value); \ | |
3104 | \ | |
3105 | if (!EQ (old_value, true_value)) \ | |
3106 | { \ | |
3107 | set_val; \ | |
3108 | } \ | |
3109 | } while (0) | |
9e062b6c RS |
3110 | |
3111 | static Lisp_Object | |
971de7fb | 3112 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c RS |
3113 | { |
3114 | /* If we find the placeholder, return the target object. */ | |
3115 | if (EQ (placeholder, subtree)) | |
3116 | return object; | |
3117 | ||
3118 | /* If we've been to this node before, don't explore it again. */ | |
3119 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3120 | return subtree; | |
3121 | ||
3122 | /* If this node can be the entry point to a cycle, remember that | |
3123 | we've seen it. It can only be such an entry point if it was made | |
3124 | by #n=, which means that we can find it as a value in | |
3125 | read_objects. */ | |
3126 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3127 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3128 | |
9e062b6c RS |
3129 | /* Recurse according to subtree's type. |
3130 | Every branch must return a Lisp_Object. */ | |
3131 | switch (XTYPE (subtree)) | |
3132 | { | |
3133 | case Lisp_Vectorlike: | |
3134 | { | |
7a3d90dc SM |
3135 | int i, length = 0; |
3136 | if (BOOL_VECTOR_P (subtree)) | |
3137 | return subtree; /* No sub-objects anyway. */ | |
3138 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3139 | || COMPILEDP (subtree)) | |
3140 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3141 | else if (VECTORP (subtree)) | |
3142 | length = ASIZE (subtree); | |
3143 | else | |
3144 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3145 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3146 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3147 | behavior. */ |
3148 | wrong_type_argument (Qsequencep, subtree); | |
3149 | ||
9e062b6c | 3150 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3151 | SUBSTITUTE (AREF (subtree, i), |
3152 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3153 | return subtree; |
3154 | } | |
3155 | ||
3156 | case Lisp_Cons: | |
3157 | { | |
7a3d90dc SM |
3158 | SUBSTITUTE (XCAR (subtree), |
3159 | XSETCAR (subtree, true_value)); | |
3160 | SUBSTITUTE (XCDR (subtree), | |
3161 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3162 | return subtree; |
3163 | } | |
3164 | ||
9e062b6c RS |
3165 | case Lisp_String: |
3166 | { | |
3167 | /* Check for text properties in each interval. | |
e61b9b87 | 3168 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3169 | |
d5db4077 | 3170 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3171 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3172 | |
0d74b006 SM |
3173 | traverse_intervals_noorder (root_interval, |
3174 | &substitute_in_interval, arg); | |
9e062b6c RS |
3175 | |
3176 | return subtree; | |
3177 | } | |
9e062b6c RS |
3178 | |
3179 | /* Other types don't recurse any further. */ | |
3180 | default: | |
3181 | return subtree; | |
3182 | } | |
3183 | } | |
3184 | ||
3185 | /* Helper function for substitute_object_recurse. */ | |
3186 | static void | |
971de7fb | 3187 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3188 | { |
3189 | Lisp_Object object = Fcar (arg); | |
3190 | Lisp_Object placeholder = Fcdr (arg); | |
3191 | ||
9735b9ce | 3192 | SUBSTITUTE (interval->plist, interval->plist = true_value); |
9e062b6c RS |
3193 | } |
3194 | ||
3195 | \f | |
078e7b4a JB |
3196 | #define LEAD_INT 1 |
3197 | #define DOT_CHAR 2 | |
3198 | #define TRAIL_INT 4 | |
3199 | #define E_CHAR 8 | |
3200 | #define EXP_INT 16 | |
3201 | ||
3202 | int | |
971de7fb | 3203 | isfloat_string (register char *cp, int ignore_trailing) |
078e7b4a | 3204 | { |
c1a2f60a | 3205 | register int state; |
177c0ea7 | 3206 | |
d8578e58 RS |
3207 | char *start = cp; |
3208 | ||
078e7b4a JB |
3209 | state = 0; |
3210 | if (*cp == '+' || *cp == '-') | |
3211 | cp++; | |
3212 | ||
075027b1 | 3213 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3214 | { |
3215 | state |= LEAD_INT; | |
075027b1 RS |
3216 | while (*cp >= '0' && *cp <= '9') |
3217 | cp++; | |
078e7b4a JB |
3218 | } |
3219 | if (*cp == '.') | |
3220 | { | |
3221 | state |= DOT_CHAR; | |
3222 | cp++; | |
3223 | } | |
075027b1 | 3224 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3225 | { |
3226 | state |= TRAIL_INT; | |
075027b1 | 3227 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3228 | cp++; |
3229 | } | |
a35f88bf | 3230 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3231 | { |
3232 | state |= E_CHAR; | |
3233 | cp++; | |
e73997a1 RS |
3234 | if (*cp == '+' || *cp == '-') |
3235 | cp++; | |
078e7b4a | 3236 | } |
078e7b4a | 3237 | |
075027b1 | 3238 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3239 | { |
3240 | state |= EXP_INT; | |
075027b1 | 3241 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3242 | cp++; |
3243 | } | |
d8578e58 RS |
3244 | else if (cp == start) |
3245 | ; | |
eb659c41 RS |
3246 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3247 | { | |
3248 | state |= EXP_INT; | |
3249 | cp += 3; | |
3250 | } | |
3251 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3252 | { | |
3253 | state |= EXP_INT; | |
3254 | cp += 3; | |
3255 | } | |
3256 | ||
be95bee9 JB |
3257 | return ((ignore_trailing |
3258 | || (*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) | |
078e7b4a | 3259 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3260 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3261 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3262 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3263 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3264 | } |
cc94f3b2 | 3265 | |
078e7b4a JB |
3266 | \f |
3267 | static Lisp_Object | |
971de7fb | 3268 | read_vector (Lisp_Object readcharfun, int bytecodeflag) |
078e7b4a JB |
3269 | { |
3270 | register int i; | |
3271 | register int size; | |
3272 | register Lisp_Object *ptr; | |
c15cfd1f | 3273 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3274 | register struct Lisp_Cons *otem; |
3275 | Lisp_Object len; | |
3276 | ||
3277 | tem = read_list (1, readcharfun); | |
3278 | len = Flength (tem); | |
3279 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3280 | ||
078e7b4a JB |
3281 | size = XVECTOR (vector)->size; |
3282 | ptr = XVECTOR (vector)->contents; | |
3283 | for (i = 0; i < size; i++) | |
3284 | { | |
c15cfd1f RS |
3285 | item = Fcar (tem); |
3286 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3287 | bytecode object, the docstring containing the bytecode and | |
3288 | constants values must be treated as unibyte and passed to | |
3289 | Fread, to get the actual bytecode string and constants vector. */ | |
3290 | if (bytecodeflag && load_force_doc_strings) | |
3291 | { | |
3292 | if (i == COMPILED_BYTECODE) | |
3293 | { | |
3294 | if (!STRINGP (item)) | |
6fa2b890 | 3295 | error ("Invalid byte code"); |
c15cfd1f RS |
3296 | |
3297 | /* Delay handling the bytecode slot until we know whether | |
3298 | it is lazily-loaded (we can tell by whether the | |
3299 | constants slot is nil). */ | |
3300 | ptr[COMPILED_CONSTANTS] = item; | |
3301 | item = Qnil; | |
3302 | } | |
3303 | else if (i == COMPILED_CONSTANTS) | |
3304 | { | |
3305 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3306 | ||
3307 | if (NILP (item)) | |
3308 | { | |
3309 | /* Coerce string to unibyte (like string-as-unibyte, | |
3310 | but without generating extra garbage and | |
3311 | guaranteeing no change in the contents). */ | |
bee91904 | 3312 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3313 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3314 | |
8792be66 | 3315 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3316 | if (!CONSP (item)) |
6fa2b890 | 3317 | error ("Invalid byte code"); |
c15cfd1f RS |
3318 | |
3319 | otem = XCONS (item); | |
c1d497be KR |
3320 | bytestr = XCAR (item); |
3321 | item = XCDR (item); | |
c15cfd1f RS |
3322 | free_cons (otem); |
3323 | } | |
3324 | ||
3325 | /* Now handle the bytecode slot. */ | |
3326 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3327 | } | |
8792be66 KH |
3328 | else if (i == COMPILED_DOC_STRING |
3329 | && STRINGP (item) | |
3330 | && ! STRING_MULTIBYTE (item)) | |
3331 | { | |
3332 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3333 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3334 | else | |
3335 | item = Fstring_as_multibyte (item); | |
3336 | } | |
c15cfd1f RS |
3337 | } |
3338 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3339 | otem = XCONS (tem); |
3340 | tem = Fcdr (tem); | |
3341 | free_cons (otem); | |
3342 | } | |
3343 | return vector; | |
3344 | } | |
177c0ea7 | 3345 | |
6f7f43d5 RS |
3346 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3347 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3348 | and make structure pure. */ |
3349 | ||
3350 | static Lisp_Object | |
971de7fb | 3351 | read_list (int flag, register Lisp_Object readcharfun) |
078e7b4a JB |
3352 | { |
3353 | /* -1 means check next element for defun, | |
3354 | 0 means don't check, | |
3355 | 1 means already checked and found defun. */ | |
3356 | int defunflag = flag < 0 ? -1 : 0; | |
3357 | Lisp_Object val, tail; | |
3358 | register Lisp_Object elt, tem; | |
3359 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3360 | /* 0 is the normal case. |
b2a30870 | 3361 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3362 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3363 | int doc_reference = 0; |
078e7b4a | 3364 | |
17634846 RS |
3365 | /* Initialize this to 1 if we are reading a list. */ |
3366 | int first_in_list = flag <= 0; | |
3367 | ||
078e7b4a JB |
3368 | val = Qnil; |
3369 | tail = Qnil; | |
3370 | ||
3371 | while (1) | |
3372 | { | |
e28552a4 | 3373 | int ch; |
078e7b4a | 3374 | GCPRO2 (val, tail); |
17634846 | 3375 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3376 | UNGCPRO; |
20ea2964 | 3377 | |
17634846 RS |
3378 | first_in_list = 0; |
3379 | ||
821d417e | 3380 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3381 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3382 | && ! NILP (elt) |
821d417e RS |
3383 | && !NILP (Vpurify_flag)) |
3384 | { | |
3385 | if (NILP (Vdoc_file_name)) | |
3386 | /* We have not yet called Snarf-documentation, so assume | |
3387 | this file is described in the DOC-MM.NN file | |
3388 | and Snarf-documentation will fill in the right value later. | |
3389 | For now, replace the whole list with 0. */ | |
3390 | doc_reference = 1; | |
3391 | else | |
3392 | /* We have already called Snarf-documentation, so make a relative | |
3393 | file name for this file, so it can be found properly | |
3394 | in the installed Lisp directory. | |
3395 | We don't use Fexpand_file_name because that would make | |
3396 | the directory absolute now. */ | |
3397 | elt = concat2 (build_string ("../lisp/"), | |
3398 | Ffile_name_nondirectory (elt)); | |
3399 | } | |
b2a30870 | 3400 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3401 | && ! NILP (elt) |
b2a30870 RS |
3402 | && load_force_doc_strings) |
3403 | doc_reference = 2; | |
20ea2964 | 3404 | |
6428369f | 3405 | if (ch) |
078e7b4a JB |
3406 | { |
3407 | if (flag > 0) | |
3408 | { | |
6428369f | 3409 | if (ch == ']') |
078e7b4a | 3410 | return val; |
336d4a9c | 3411 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3412 | } |
6428369f | 3413 | if (ch == ')') |
078e7b4a | 3414 | return val; |
6428369f | 3415 | if (ch == '.') |
078e7b4a JB |
3416 | { |
3417 | GCPRO2 (val, tail); | |
265a9e55 | 3418 | if (!NILP (tail)) |
f5df591a | 3419 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3420 | else |
3421 | val = read0 (readcharfun); | |
17634846 | 3422 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3423 | UNGCPRO; |
6428369f | 3424 | if (ch == ')') |
821d417e RS |
3425 | { |
3426 | if (doc_reference == 1) | |
3427 | return make_number (0); | |
b2a30870 RS |
3428 | if (doc_reference == 2) |
3429 | { | |
3430 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3431 | If it's in saved_doc_string, get it from there. |
3432 | ||
3433 | Here, we don't know if the string is a | |
3434 | bytecode string or a doc string. As a | |
3435 | bytecode string must be unibyte, we always | |
3436 | return a unibyte string. If it is actually a | |
3437 | doc string, caller must make it | |
3438 | multibyte. */ | |
8f924df7 | 3439 | |
c1d497be | 3440 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3441 | /* Position is negative for user variables. */ |
3442 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3443 | if (pos >= saved_doc_string_position |
3444 | && pos < (saved_doc_string_position | |
3445 | + saved_doc_string_length)) | |
3446 | { | |
3447 | int start = pos - saved_doc_string_position; | |
3448 | int from, to; | |
3449 | ||
3450 | /* Process quoting with ^A, | |
3451 | and find the end of the string, | |
3452 | which is marked with ^_ (037). */ | |
3453 | for (from = start, to = start; | |
3454 | saved_doc_string[from] != 037;) | |
3455 | { | |
3456 | int c = saved_doc_string[from++]; | |
3457 | if (c == 1) | |
3458 | { | |
3459 | c = saved_doc_string[from++]; | |
3460 | if (c == 1) | |
3461 | saved_doc_string[to++] = c; | |
3462 | else if (c == '0') | |
3463 | saved_doc_string[to++] = 0; | |
3464 | else if (c == '_') | |
3465 | saved_doc_string[to++] = 037; | |
3466 | } | |
3467 | else | |
3468 | saved_doc_string[to++] = c; | |
3469 | } | |
3470 | ||
8792be66 KH |
3471 | return make_unibyte_string (saved_doc_string + start, |
3472 | to - start); | |
b2a30870 | 3473 | } |
c15cfd1f RS |
3474 | /* Look in prev_saved_doc_string the same way. */ |
3475 | else if (pos >= prev_saved_doc_string_position | |
3476 | && pos < (prev_saved_doc_string_position | |
3477 | + prev_saved_doc_string_length)) | |
3478 | { | |
3479 | int start = pos - prev_saved_doc_string_position; | |
3480 | int from, to; | |
3481 | ||
3482 | /* Process quoting with ^A, | |
3483 | and find the end of the string, | |
3484 | which is marked with ^_ (037). */ | |
3485 | for (from = start, to = start; | |
3486 | prev_saved_doc_string[from] != 037;) | |
3487 | { | |
3488 | int c = prev_saved_doc_string[from++]; | |
3489 | if (c == 1) | |
3490 | { | |
3491 | c = prev_saved_doc_string[from++]; | |
3492 | if (c == 1) | |
3493 | prev_saved_doc_string[to++] = c; | |
3494 | else if (c == '0') | |
3495 | prev_saved_doc_string[to++] = 0; | |
3496 | else if (c == '_') | |
3497 | prev_saved_doc_string[to++] = 037; | |
3498 | } | |
3499 | else | |
3500 | prev_saved_doc_string[to++] = c; | |
3501 | } | |
3502 | ||
8792be66 KH |
3503 | return make_unibyte_string (prev_saved_doc_string |
3504 | + start, | |
3505 | to - start); | |
c15cfd1f | 3506 | } |
b2a30870 | 3507 | else |
8792be66 | 3508 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3509 | } |
3510 | ||
821d417e RS |
3511 | return val; |
3512 | } | |
336d4a9c | 3513 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3514 | } |
336d4a9c | 3515 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3516 | } |
3517 | tem = (read_pure && flag <= 0 | |
3518 | ? pure_cons (elt, Qnil) | |
3519 | : Fcons (elt, Qnil)); | |
265a9e55 | 3520 | if (!NILP (tail)) |
f5df591a | 3521 | XSETCDR (tail, tem); |
078e7b4a JB |
3522 | else |
3523 | val = tem; | |
3524 | tail = tem; | |
3525 | if (defunflag < 0) | |
3526 | defunflag = EQ (elt, Qdefun); | |
3527 | else if (defunflag > 0) | |
3528 | read_pure = 1; | |
3529 | } | |
3530 | } | |
3531 | \f | |
3532 | Lisp_Object Vobarray; | |
3533 | Lisp_Object initial_obarray; | |
3534 | ||
d007f5c8 RS |
3535 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3536 | ||
3537 | int oblookup_last_bucket_number; | |
3538 | ||
971de7fb | 3539 | static int hash_string (const unsigned char *ptr, int len); |
d007f5c8 RS |
3540 | |
3541 | /* Get an error if OBARRAY is not an obarray. | |
3542 | If it is one, return it. */ | |
3543 | ||
078e7b4a | 3544 | Lisp_Object |
971de7fb | 3545 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3546 | { |
8878319c | 3547 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3548 | { |
3549 | /* If Vobarray is now invalid, force it to be valid. */ | |
3550 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3551 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3552 | } |
3553 | return obarray; | |
3554 | } | |
3555 | ||
d007f5c8 RS |
3556 | /* Intern the C string STR: return a symbol with that name, |
3557 | interned in the current obarray. */ | |
078e7b4a JB |
3558 | |
3559 | Lisp_Object | |
971de7fb | 3560 | intern (const char *str) |
078e7b4a JB |
3561 | { |
3562 | Lisp_Object tem; | |
3563 | int len = strlen (str); | |
153a17b7 | 3564 | Lisp_Object obarray; |
078e7b4a | 3565 | |
153a17b7 | 3566 | obarray = Vobarray; |
cfff016d | 3567 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3568 | obarray = check_obarray (obarray); |
e28552a4 | 3569 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3570 | if (SYMBOLP (tem)) |
078e7b4a | 3571 | return tem; |
87631ef7 | 3572 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3573 | } |
4ad679f9 | 3574 | |
5e2327cf DN |
3575 | Lisp_Object |
3576 | intern_c_string (const char *str) | |
3577 | { | |
3578 | Lisp_Object tem; | |
3579 | int len = strlen (str); | |
3580 | Lisp_Object obarray; | |
3581 | ||
3582 | obarray = Vobarray; | |
3583 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) | |
3584 | obarray = check_obarray (obarray); | |
3585 | tem = oblookup (obarray, str, len, len); | |
3586 | if (SYMBOLP (tem)) | |
3587 | return tem; | |
3588 | ||
3589 | if (NILP (Vpurify_flag)) | |
3590 | /* Creating a non-pure string from a string literal not | |
3591 | implemented yet. We could just use make_string here and live | |
3592 | with the extra copy. */ | |
3593 | abort (); | |
3594 | ||
3595 | return Fintern (make_pure_c_string (str), obarray); | |
3596 | } | |
3597 | ||
4ad679f9 EN |
3598 | /* Create an uninterned symbol with name STR. */ |
3599 | ||
3600 | Lisp_Object | |
971de7fb | 3601 | make_symbol (char *str) |
4ad679f9 EN |
3602 | { |
3603 | int len = strlen (str); | |
3604 | ||
3605 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3606 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3607 | : make_string (str, len))); |
3608 | } | |
d007f5c8 | 3609 | \f |
078e7b4a | 3610 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3611 | doc: /* Return the canonical symbol whose name is STRING. |
3612 | If there is none, one is created by this function and returned. | |
3613 | A second optional argument specifies the obarray to use; | |
3614 | it defaults to the value of `obarray'. */) | |
3615 | (string, obarray) | |
9391b698 | 3616 | Lisp_Object string, obarray; |
078e7b4a JB |
3617 | { |
3618 | register Lisp_Object tem, sym, *ptr; | |
3619 | ||
265a9e55 | 3620 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3621 | obarray = check_obarray (obarray); |
3622 | ||
b7826503 | 3623 | CHECK_STRING (string); |
078e7b4a | 3624 | |
d5db4077 KR |
3625 | tem = oblookup (obarray, SDATA (string), |
3626 | SCHARS (string), | |
3627 | SBYTES (string)); | |
cfff016d | 3628 | if (!INTEGERP (tem)) |
078e7b4a JB |
3629 | return tem; |
3630 | ||
265a9e55 | 3631 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3632 | string = Fpurecopy (string); |
3633 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3634 | |
3635 | if (EQ (obarray, initial_obarray)) | |
3636 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3637 | else | |
3638 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3639 | |
d5db4077 | 3640 | if ((SREF (string, 0) == ':') |
a458d45d | 3641 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3642 | { |
3643 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3644 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3645 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3646 | } |
a0549832 | 3647 | |
078e7b4a | 3648 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3649 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3650 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3651 | else | |
3652 | XSYMBOL (sym)->next = 0; | |
3653 | *ptr = sym; | |
3654 | return sym; | |
3655 | } | |
3656 | ||
3657 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3658 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3659 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3660 | symbol is searched for. | |
3661 | A second optional argument specifies the obarray to use; | |
3662 | it defaults to the value of `obarray'. */) | |
3663 | (name, obarray) | |
b55048d4 | 3664 | Lisp_Object name, obarray; |
078e7b4a | 3665 | { |
c2d47f4b | 3666 | register Lisp_Object tem, string; |
078e7b4a | 3667 | |
265a9e55 | 3668 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3669 | obarray = check_obarray (obarray); |
3670 | ||
b55048d4 GM |
3671 | if (!SYMBOLP (name)) |
3672 | { | |
b7826503 | 3673 | CHECK_STRING (name); |
c2d47f4b | 3674 | string = name; |
b55048d4 GM |
3675 | } |
3676 | else | |
c2d47f4b | 3677 | string = SYMBOL_NAME (name); |
078e7b4a | 3678 | |
c2d47f4b | 3679 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3680 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3681 | return Qnil; | |
3682 | else | |
078e7b4a | 3683 | return tem; |
078e7b4a | 3684 | } |
d007f5c8 RS |
3685 | \f |
3686 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3687 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3688 | The value is t if a symbol was found and deleted, nil otherwise. | |
3689 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3690 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3691 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3692 | (name, obarray) | |
d007f5c8 RS |
3693 | Lisp_Object name, obarray; |
3694 | { | |
3695 | register Lisp_Object string, tem; | |
3696 | int hash; | |
3697 | ||
3698 | if (NILP (obarray)) obarray = Vobarray; | |
3699 | obarray = check_obarray (obarray); | |
3700 | ||
3701 | if (SYMBOLP (name)) | |
d4c83cae | 3702 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3703 | else |
3704 | { | |
b7826503 | 3705 | CHECK_STRING (name); |
d007f5c8 RS |
3706 | string = name; |
3707 | } | |
3708 | ||
d5db4077 KR |
3709 | tem = oblookup (obarray, SDATA (string), |
3710 | SCHARS (string), | |
3711 | SBYTES (string)); | |
d007f5c8 RS |
3712 | if (INTEGERP (tem)) |
3713 | return Qnil; | |
3714 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3715 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3716 | return Qnil; | |
3717 | ||
8ab1650e SM |
3718 | /* There are plenty of other symbols which will screw up the Emacs |
3719 | session if we unintern them, as well as even more ways to use | |
3720 | `setq' or `fset' or whatnot to make the Emacs session | |
3721 | unusable. Let's not go down this silly road. --Stef */ | |
3722 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3723 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3724 | |
44c6c019 | 3725 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3726 | |
d007f5c8 RS |
3727 | hash = oblookup_last_bucket_number; |
3728 | ||
3729 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3730 | { |
3731 | if (XSYMBOL (tem)->next) | |
3732 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3733 | else | |
3734 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3735 | } | |
d007f5c8 RS |
3736 | else |
3737 | { | |
3738 | Lisp_Object tail, following; | |
3739 | ||
3740 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3741 | XSYMBOL (tail)->next; | |
3742 | tail = following) | |
3743 | { | |
3744 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3745 | if (EQ (following, tem)) | |
3746 | { | |
3747 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3748 | break; | |
3749 | } | |
3750 | } | |
3751 | } | |
3752 | ||
3753 | return Qt; | |
3754 | } | |
3755 | \f | |
3756 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3757 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3758 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3759 | |
3760 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3761 | |
3762 | Lisp_Object | |
971de7fb | 3763 | oblookup (Lisp_Object obarray, register const char *ptr, int size, int size_byte) |
078e7b4a | 3764 | { |
7a70b397 RS |
3765 | int hash; |
3766 | int obsize; | |
078e7b4a JB |
3767 | register Lisp_Object tail; |
3768 | Lisp_Object bucket, tem; | |
3769 | ||
cfff016d | 3770 | if (!VECTORP (obarray) |
7c79a684 | 3771 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3772 | { |
3773 | obarray = check_obarray (obarray); | |
3774 | obsize = XVECTOR (obarray)->size; | |
3775 | } | |
519418b3 RS |
3776 | /* This is sometimes needed in the middle of GC. */ |
3777 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3778 | hash = hash_string (ptr, size_byte) % obsize; |
078e7b4a | 3779 | bucket = XVECTOR (obarray)->contents[hash]; |
d007f5c8 | 3780 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3781 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3782 | ; |
cfff016d | 3783 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3784 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3785 | else |
3786 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3787 | { |
d5db4077 KR |
3788 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3789 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3790 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3791 | return tail; |
3792 | else if (XSYMBOL (tail)->next == 0) | |
3793 | break; | |
3794 | } | |
1805de4f | 3795 | XSETINT (tem, hash); |
078e7b4a JB |
3796 | return tem; |
3797 | } | |
3798 | ||
3799 | static int | |
971de7fb | 3800 | hash_string (const unsigned char *ptr, int len) |
078e7b4a | 3801 | { |
4b2dd274 KR |
3802 | register const unsigned char *p = ptr; |
3803 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3804 | register unsigned char c; |
3805 | register int hash = 0; | |
3806 | ||
3807 | while (p != end) | |
3808 | { | |
3809 | c = *p++; | |
3810 | if (c >= 0140) c -= 40; | |
3811 | hash = ((hash<<3) + (hash>>28) + c); | |
3812 | } | |
3813 | return hash & 07777777777; | |
3814 | } | |
d007f5c8 | 3815 | \f |
078e7b4a | 3816 | void |
971de7fb | 3817 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a JB |
3818 | { |
3819 | register int i; | |
3820 | register Lisp_Object tail; | |
b7826503 | 3821 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3822 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3823 | { | |
3824 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3825 | if (SYMBOLP (tail)) |
078e7b4a JB |
3826 | while (1) |
3827 | { | |
3828 | (*fn) (tail, arg); | |
3829 | if (XSYMBOL (tail)->next == 0) | |
3830 | break; | |
1805de4f | 3831 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3832 | } |
3833 | } | |
3834 | } | |
3835 | ||
d5b28a9d | 3836 | void |
971de7fb | 3837 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3838 | { |
3839 | call1 (function, sym); | |
3840 | } | |
3841 | ||
3842 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3843 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3844 | OBARRAY defaults to the value of `obarray'. */) | |
3845 | (function, obarray) | |
078e7b4a JB |
3846 | Lisp_Object function, obarray; |
3847 | { | |
265a9e55 | 3848 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3849 | obarray = check_obarray (obarray); |
3850 | ||
3851 | map_obarray (obarray, mapatoms_1, function); | |
3852 | return Qnil; | |
3853 | } | |
3854 | ||
5e88a39e | 3855 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3856 | |
3857 | void | |
971de7fb | 3858 | init_obarray (void) |
078e7b4a JB |
3859 | { |
3860 | Lisp_Object oblength; | |
078e7b4a | 3861 | |
baf69866 | 3862 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3863 | |
078e7b4a JB |
3864 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3865 | initial_obarray = Vobarray; | |
3866 | staticpro (&initial_obarray); | |
078e7b4a | 3867 | |
d67b4f80 | 3868 | Qunbound = Fmake_symbol (make_pure_c_string ("unbound")); |
ce5b453a SM |
3869 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
3870 | NILP (Vpurify_flag) check in intern_c_string. */ | |
3871 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
3872 | Qnil = intern_c_string ("nil"); | |
3873 | ||
3874 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
3875 | so those two need to be fixed manally. */ | |
3876 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); | |
078e7b4a | 3877 | XSYMBOL (Qunbound)->function = Qunbound; |
ce5b453a SM |
3878 | XSYMBOL (Qunbound)->plist = Qnil; |
3879 | /* XSYMBOL (Qnil)->function = Qunbound; */ | |
3880 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); | |
3881 | XSYMBOL (Qnil)->constant = 1; | |
3882 | XSYMBOL (Qnil)->plist = Qnil; | |
078e7b4a | 3883 | |
d67b4f80 | 3884 | Qt = intern_c_string ("t"); |
ce5b453a | 3885 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
44c6c019 | 3886 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3887 | |
3888 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3889 | Vpurify_flag = Qt; | |
3890 | ||
d67b4f80 | 3891 | Qvariable_documentation = intern_c_string ("variable-documentation"); |
0f73bb1c | 3892 | staticpro (&Qvariable_documentation); |
078e7b4a | 3893 | |
449fea39 | 3894 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3895 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3896 | } |
3897 | \f | |
3898 | void | |
971de7fb | 3899 | defsubr (struct Lisp_Subr *sname) |
078e7b4a JB |
3900 | { |
3901 | Lisp_Object sym; | |
d67b4f80 | 3902 | sym = intern_c_string (sname->symbol_name); |
5a6891e2 | 3903 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 3904 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3905 | } |
3906 | ||
3907 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3908 | void | |
3909 | defalias (sname, string) | |
3910 | struct Lisp_Subr *sname; | |
3911 | char *string; | |
3912 | { | |
3913 | Lisp_Object sym; | |
3914 | sym = intern (string); | |
1805de4f | 3915 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3916 | } |
3917 | #endif /* NOTDEF */ | |
3918 | ||
078e7b4a | 3919 | /* Define an "integer variable"; a symbol whose value is forwarded |
0f011df0 JB |
3920 | to a C variable of type int. Sample call: |
3921 | DEFVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 3922 | void |
ce5b453a SM |
3923 | defvar_int (struct Lisp_Intfwd *i_fwd, |
3924 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 3925 | { |
ce5b453a | 3926 | Lisp_Object sym; |
5e2327cf | 3927 | sym = intern_c_string (namestring); |
ce5b453a SM |
3928 | i_fwd->type = Lisp_Fwd_Int; |
3929 | i_fwd->intvar = address; | |
3930 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3931 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
3932 | } |
3933 | ||
f0529b5b | 3934 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 3935 | nil if address contains 0. */ |
078e7b4a | 3936 | void |
ce5b453a SM |
3937 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
3938 | const char *namestring, int *address) | |
078e7b4a | 3939 | { |
ce5b453a | 3940 | Lisp_Object sym; |
5e2327cf | 3941 | sym = intern_c_string (namestring); |
ce5b453a SM |
3942 | b_fwd->type = Lisp_Fwd_Bool; |
3943 | b_fwd->boolvar = address; | |
3944 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3945 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 3946 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3947 | } |
3948 | ||
1a0f90f7 KH |
3949 | /* Similar but define a variable whose value is the Lisp Object stored |
3950 | at address. Two versions: with and without gc-marking of the C | |
3951 | variable. The nopro version is used when that variable will be | |
3952 | gc-marked for some other reason, since marking the same slot twice | |
3953 | can cause trouble with strings. */ | |
078e7b4a | 3954 | void |
ce5b453a SM |
3955 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
3956 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 3957 | { |
ce5b453a | 3958 | Lisp_Object sym; |
5e2327cf | 3959 | sym = intern_c_string (namestring); |
ce5b453a SM |
3960 | o_fwd->type = Lisp_Fwd_Obj; |
3961 | o_fwd->objvar = address; | |
3962 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3963 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
3964 | } |
3965 | ||
078e7b4a | 3966 | void |
ce5b453a SM |
3967 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
3968 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 3969 | { |
ce5b453a | 3970 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 3971 | staticpro (address); |
078e7b4a JB |
3972 | } |
3973 | ||
950c215d | 3974 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 3975 | at a particular offset in the current kboard object. */ |
950c215d KH |
3976 | |
3977 | void | |
ce5b453a SM |
3978 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
3979 | const char *namestring, int offset) | |
950c215d | 3980 | { |
ce5b453a | 3981 | Lisp_Object sym; |
5e2327cf | 3982 | sym = intern_c_string (namestring); |
ce5b453a SM |
3983 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
3984 | ko_fwd->offset = offset; | |
3985 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3986 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 3987 | } |
078e7b4a | 3988 | \f |
11938f10 KH |
3989 | /* Record the value of load-path used at the start of dumping |
3990 | so we can see if the site changed it later during dumping. */ | |
3991 | static Lisp_Object dump_path; | |
3992 | ||
d5b28a9d | 3993 | void |
971de7fb | 3994 | init_lread (void) |
078e7b4a | 3995 | { |
46947372 | 3996 | char *normal; |
e73997a1 | 3997 | int turn_off_warning = 0; |
078e7b4a | 3998 | |
279499f0 | 3999 | /* Compute the default load-path. */ |
46947372 JB |
4000 | #ifdef CANNOT_DUMP |
4001 | normal = PATH_LOADSEARCH; | |
e065a56e | 4002 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
4003 | #else |
4004 | if (NILP (Vpurify_flag)) | |
4005 | normal = PATH_LOADSEARCH; | |
279499f0 | 4006 | else |
46947372 | 4007 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 4008 | |
46947372 JB |
4009 | /* In a dumped Emacs, we normally have to reset the value of |
4010 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
4011 | uses ../lisp, instead of the path of the installed elisp | |
4012 | libraries. However, if it appears that Vload_path was changed | |
4013 | from the default before dumping, don't override that value. */ | |
4746118a JB |
4014 | if (initialized) |
4015 | { | |
4746118a | 4016 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
4017 | { |
4018 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 4019 | if (!NILP (Vinstallation_directory)) |
80667d53 | 4020 | { |
3ddff138 RS |
4021 | Lisp_Object tem, tem1, sitelisp; |
4022 | ||
4023 | /* Remove site-lisp dirs from path temporarily and store | |
4024 | them in sitelisp, then conc them on at the end so | |
4025 | they're always first in path. */ | |
4026 | sitelisp = Qnil; | |
4027 | while (1) | |
4028 | { | |
4029 | tem = Fcar (Vload_path); | |
4030 | tem1 = Fstring_match (build_string ("site-lisp"), | |
4031 | tem, Qnil); | |
4032 | if (!NILP (tem1)) | |
4033 | { | |
4034 | Vload_path = Fcdr (Vload_path); | |
4035 | sitelisp = Fcons (tem, sitelisp); | |
4036 | } | |
4037 | else | |
4038 | break; | |
4039 | } | |
4040 | ||
74180aa4 | 4041 | /* Add to the path the lisp subdir of the |
3a3056e5 | 4042 | installation dir, if it exists. */ |
74180aa4 RS |
4043 | tem = Fexpand_file_name (build_string ("lisp"), |
4044 | Vinstallation_directory); | |
3a3056e5 RS |
4045 | tem1 = Ffile_exists_p (tem); |
4046 | if (!NILP (tem1)) | |
4047 | { | |
4048 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
4049 | { |
4050 | turn_off_warning = 1; | |
3ddff138 | 4051 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 4052 | } |
3a3056e5 RS |
4053 | } |
4054 | else | |
4055 | /* That dir doesn't exist, so add the build-time | |
4056 | Lisp dirs instead. */ | |
4057 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 4058 | |
9fbc0116 RS |
4059 | /* Add leim under the installation dir, if it exists. */ |
4060 | tem = Fexpand_file_name (build_string ("leim"), | |
4061 | Vinstallation_directory); | |
4062 | tem1 = Ffile_exists_p (tem); | |
4063 | if (!NILP (tem1)) | |
4064 | { | |
4065 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4066 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
4067 | } |
4068 | ||
88852d45 | 4069 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
4070 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4071 | Vinstallation_directory); | |
4072 | tem1 = Ffile_exists_p (tem); | |
4073 | if (!NILP (tem1)) | |
4074 | { | |
4075 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4076 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 4077 | } |
0f337465 RS |
4078 | |
4079 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
4080 | and it is run from where it was built, add to load-path |
4081 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
4082 | |
4083 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4084 | { | |
33046fc9 RS |
4085 | Lisp_Object tem2; |
4086 | ||
0f337465 RS |
4087 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
4088 | Vinstallation_directory); | |
4089 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
4090 | |
4091 | /* Don't be fooled if they moved the entire source tree | |
4092 | AFTER dumping Emacs. If the build directory is indeed | |
4093 | different from the source dir, src/Makefile.in and | |
4094 | src/Makefile will not be found together. */ | |
4095 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4096 | Vinstallation_directory); | |
4097 | tem2 = Ffile_exists_p (tem); | |
4098 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4099 | { |
4100 | tem = Fexpand_file_name (build_string ("lisp"), | |
4101 | Vsource_directory); | |
4102 | ||
4103 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4104 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4105 | |
9fbc0116 RS |
4106 | tem = Fexpand_file_name (build_string ("leim"), |
4107 | Vsource_directory); | |
4108 | ||
4109 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4110 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4111 | |
0f337465 RS |
4112 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4113 | Vsource_directory); | |
4114 | ||
4115 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4116 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4117 | } |
4118 | } | |
3ddff138 RS |
4119 | if (!NILP (sitelisp)) |
4120 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
4121 | } |
4122 | } | |
4746118a JB |
4123 | } |
4124 | else | |
11938f10 | 4125 | { |
7b396c6c RS |
4126 | /* NORMAL refers to the lisp dir in the source directory. */ |
4127 | /* We used to add ../lisp at the front here, but | |
4128 | that caused trouble because it was copied from dump_path | |
88852d45 | 4129 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4130 | It should be unnecessary. */ |
4131 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4132 | dump_path = Vload_path; |
4133 | } | |
46947372 | 4134 | #endif |
279499f0 | 4135 | |
9735b9ce | 4136 | #if (!(defined (WINDOWSNT) || (defined (HAVE_NS)))) |
177c0ea7 JB |
4137 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4138 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4139 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
9e2a2647 | 4140 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
317073d5 | 4141 | |
078e7b4a | 4142 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4143 | if (!turn_off_warning) |
4144 | { | |
4145 | Lisp_Object path_tail; | |
078e7b4a | 4146 | |
e73997a1 RS |
4147 | for (path_tail = Vload_path; |
4148 | !NILP (path_tail); | |
c1d497be | 4149 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4150 | { |
4151 | Lisp_Object dirfile; | |
4152 | dirfile = Fcar (path_tail); | |
4153 | if (STRINGP (dirfile)) | |
4154 | { | |
4155 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 4156 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 4157 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4158 | XCAR (path_tail)); |
e73997a1 RS |
4159 | } |
4160 | } | |
4161 | } | |
9e2a2647 | 4162 | #endif /* !(WINDOWSNT || HAVE_NS) */ |
46947372 JB |
4163 | |
4164 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4165 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4166 | #ifndef CANNOT_DUMP |
46947372 JB |
4167 | if (NILP (Vpurify_flag) |
4168 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4169 | #endif |
279499f0 | 4170 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4171 | |
4172 | Vvalues = Qnil; | |
4173 | ||
078e7b4a | 4174 | load_in_progress = 0; |
4e53f562 | 4175 | Vload_file_name = Qnil; |
d2c6be7f RS |
4176 | |
4177 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4178 | |
4179 | Vstandard_input = Qt; | |
f74b0705 | 4180 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4181 | } |
4182 | ||
85496b8c | 4183 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4184 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4185 | |
d5b28a9d | 4186 | void |
971de7fb | 4187 | dir_warning (char *format, Lisp_Object dirname) |
85496b8c RS |
4188 | { |
4189 | char *buffer | |
d5db4077 | 4190 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4191 | |
d5db4077 KR |
4192 | fprintf (stderr, format, SDATA (dirname)); |
4193 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4194 | /* Don't log the warning before we've initialized!! */ |
4195 | if (initialized) | |
4196 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4197 | } |
4198 | ||
078e7b4a | 4199 | void |
971de7fb | 4200 | syms_of_lread (void) |
078e7b4a JB |
4201 | { |
4202 | defsubr (&Sread); | |
4203 | defsubr (&Sread_from_string); | |
4204 | defsubr (&Sintern); | |
4205 | defsubr (&Sintern_soft); | |
d007f5c8 | 4206 | defsubr (&Sunintern); |
971a4293 | 4207 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4208 | defsubr (&Sload); |
228d4b1c | 4209 | defsubr (&Seval_buffer); |
078e7b4a JB |
4210 | defsubr (&Seval_region); |
4211 | defsubr (&Sread_char); | |
4212 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4213 | defsubr (&Sread_event); |
078e7b4a JB |
4214 | defsubr (&Sget_file_char); |
4215 | defsubr (&Smapatoms); | |
86d00812 | 4216 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
4217 | |
4218 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
4219 | doc: /* Symbol table for use by `intern' and `read'. |
4220 | It is a vector whose length ought to be prime for best results. | |
4221 | The vector's contents don't make sense if examined from Lisp programs; | |
4222 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
4223 | |
4224 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
4225 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4226 | Order is reverse chronological. */); | |
078e7b4a JB |
4227 | |
4228 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
4229 | doc: /* Stream for read to get input from. |
4230 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4231 | Vstandard_input = Qt; |
4232 | ||
abb13b09 CW |
4233 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4234 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4235 | ||
4236 | If this variable is a buffer, then only forms read from that buffer | |
4237 | will be added to `read-symbol-positions-list'. | |
4238 | If this variable is t, then all read forms will be added. | |
4239 | The effect of all other values other than nil are not currently | |
4240 | defined, although they may be in the future. | |
4241 | ||
4242 | The positions are relative to the last call to `read' or | |
4243 | `read-from-string'. It is probably a bad idea to set this variable at | |
4244 | the toplevel; bind it instead. */); | |
4245 | Vread_with_symbol_positions = Qnil; | |
4246 | ||
4247 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4248 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4249 | This variable is modified during calls to `read' or |
4250 | `read-from-string', but only when `read-with-symbol-positions' is | |
4251 | non-nil. | |
4252 | ||
4253 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4254 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4255 | symbol from the position where `read' or `read-from-string' started. |
4256 | ||
4257 | Note that a symbol will appear multiple times in this list, if it was | |
4258 | read multiple times. The list is in the same order as the symbols | |
4259 | were read in. */); | |
177c0ea7 | 4260 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4261 | |
91f68422 CY |
4262 | DEFVAR_LISP ("read-circle", &Vread_circle, |
4263 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); | |
4264 | Vread_circle = Qt; | |
4265 | ||
078e7b4a | 4266 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4267 | doc: /* *List of directories to search for files to load. |
4268 | Each element is a string (directory name) or nil (try default directory). | |
4269 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4270 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4271 | |
e61b9b87 | 4272 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4273 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4274 | This list should not include the empty string. | |
4275 | `load' and related functions try to append these suffixes, in order, | |
4276 | to the specified file name if a Lisp suffix is allowed or required. */); | |
a4ada374 DN |
4277 | Vload_suffixes = Fcons (make_pure_c_string (".elc"), |
4278 | Fcons (make_pure_c_string (".el"), Qnil)); | |
971a4293 LT |
4279 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4280 | doc: /* List of suffixes that indicate representations of \ | |
4281 | the same file. | |
4282 | This list should normally start with the empty string. | |
4283 | ||
4284 | Enabling Auto Compression mode appends the suffixes in | |
4285 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4286 | mode removes them again. `load' and related functions use this list to | |
4287 | determine whether they should look for compressed versions of a file | |
4288 | and, if so, which suffixes they should try to append to the file name | |
4289 | in order to do so. However, if you want to customize which suffixes | |
4290 | the loading functions recognize as compression suffixes, you should | |
4291 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4292 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4293 | |
078e7b4a | 4294 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
e0f24100 | 4295 | doc: /* Non-nil if inside of `load'. */); |
d67b4f80 | 4296 | Qload_in_progress = intern_c_string ("load-in-progress"); |
2baf5e76 | 4297 | staticpro (&Qload_in_progress); |
078e7b4a JB |
4298 | |
4299 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4300 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4301 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4302 | ||
4303 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4304 | a symbol \(a feature name). | |
4305 | ||
4306 | When `load' is run and the file-name argument matches an element's | |
4307 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4308 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4309 | ||
4310 | An error in FORMS does not undo the load, but does prevent execution of | |
4311 | the rest of the FORMS. */); | |
078e7b4a JB |
4312 | Vafter_load_alist = Qnil; |
4313 | ||
ae321d28 | 4314 | DEFVAR_LISP ("load-history", &Vload_history, |
4801c5fa CY |
4315 | doc: /* Alist mapping loaded file names to symbols and features. |
4316 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4317 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4318 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4319 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4320 | for symbols and features not associated with any file. | |
4321 | ||
4322 | The remaining ENTRIES in the alist element describe the functions and | |
4323 | variables defined in that file, the features provided, and the | |
4324 | features required. Each entry has the form `(provide . FEATURE)', | |
4325 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
4326 | `(defface . SYMBOL)', or `(t . SYMBOL)'. In addition, an entry `(t | |
4327 | . SYMBOL)' may precede an entry `(defun . FUNCTION)', and means that | |
4328 | SYMBOL was an autoload before this file redefined it as a function. | |
0fc213e9 | 4329 | |
b502a9a1 RS |
4330 | During preloading, the file name recorded is relative to the main Lisp |
4331 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4332 | Vload_history = Qnil; |
4333 | ||
20ea2964 | 4334 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4335 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4336 | Vload_file_name = Qnil; |
4337 | ||
4116ab9f | 4338 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4339 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4340 | If the file loaded had extension `.elc', and the corresponding source file |
4341 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4342 | by functions like `custom-save-all' which edit the init file. |
4343 | While Emacs loads and evaluates the init file, value is the real name | |
4344 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4345 | Vuser_init_file = Qnil; |
4346 | ||
8a1f1537 | 4347 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4348 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4349 | Vcurrent_load_list = Qnil; |
4350 | ||
84a15045 | 4351 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4352 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4353 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4354 | Vload_read_function = Qnil; |
4355 | ||
fe0e03f3 | 4356 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4357 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4358 | This function is for doing code conversion before reading the source file. |
4359 | If nil, loading is done without any code conversion. | |
4360 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4361 | FULLNAME is the full name of FILE. | |
4362 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4363 | Vload_source_file_function = Qnil; |
4364 | ||
b2a30870 | 4365 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4366 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4367 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4368 | load_force_doc_strings = 0; |
4369 | ||
94e554db | 4370 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4371 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4372 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4373 | and is not meant for users to change. */); | |
94e554db RS |
4374 | load_convert_to_unibyte = 0; |
4375 | ||
1521a8fa | 4376 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4377 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4378 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4379 | Vsource_directory |
4380 | = Fexpand_file_name (build_string ("../"), | |
4381 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4382 | ||
4b104c41 | 4383 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4384 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4385 | Vpreloaded_file_list = Qnil; |
4386 | ||
1ffcc3b1 | 4387 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4388 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4389 | Vbyte_boolean_vars = Qnil; |
4390 | ||
da84f340 | 4391 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4392 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4393 | Some versions of XEmacs use different byte codes than Emacs. These | |
4394 | incompatible byte codes can make Emacs crash when it tries to execute | |
4395 | them. */); | |
da84f340 GM |
4396 | load_dangerous_libraries = 0; |
4397 | ||
beb0b7f9 EZ |
4398 | DEFVAR_BOOL ("force-load-messages", &force_load_messages, |
4399 | doc: /* Non-nil means force printing messages when loading Lisp files. | |
4400 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4401 | force_load_messages = 0; | |
4402 | ||
bb970e67 | 4403 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4404 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4405 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4406 | from the file, and matches them against this regular expression. | |
4407 | When the regular expression matches, the file is considered to be safe | |
4408 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4409 | Vbytecomp_version_regexp |
d67b4f80 | 4410 | = make_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4411 | |
3f39f996 RS |
4412 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4413 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4414 | Veval_buffer_list = Qnil; | |
4415 | ||
5aa273b0 SM |
4416 | DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes, |
4417 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); | |
4418 | Vold_style_backquotes = Qnil; | |
d67b4f80 | 4419 | Qold_style_backquotes = intern_c_string ("old-style-backquotes"); |
1d064697 | 4420 | staticpro (&Qold_style_backquotes); |
5aa273b0 | 4421 | |
a90ba1e2 KH |
4422 | /* Vsource_directory was initialized in init_lread. */ |
4423 | ||
d2c6be7f RS |
4424 | load_descriptor_list = Qnil; |
4425 | staticpro (&load_descriptor_list); | |
4426 | ||
d67b4f80 | 4427 | Qcurrent_load_list = intern_c_string ("current-load-list"); |
8a1f1537 RS |
4428 | staticpro (&Qcurrent_load_list); |
4429 | ||
d67b4f80 | 4430 | Qstandard_input = intern_c_string ("standard-input"); |
078e7b4a JB |
4431 | staticpro (&Qstandard_input); |
4432 | ||
d67b4f80 | 4433 | Qread_char = intern_c_string ("read-char"); |
078e7b4a JB |
4434 | staticpro (&Qread_char); |
4435 | ||
d67b4f80 | 4436 | Qget_file_char = intern_c_string ("get-file-char"); |
078e7b4a | 4437 | staticpro (&Qget_file_char); |
7bd279cd | 4438 | |
d67b4f80 | 4439 | Qget_emacs_mule_file_char = intern_c_string ("get-emacs-mule-file-char"); |
8792be66 KH |
4440 | staticpro (&Qget_emacs_mule_file_char); |
4441 | ||
d67b4f80 | 4442 | Qload_force_doc_strings = intern_c_string ("load-force-doc-strings"); |
8792be66 KH |
4443 | staticpro (&Qload_force_doc_strings); |
4444 | ||
d67b4f80 | 4445 | Qbackquote = intern_c_string ("`"); |
17634846 | 4446 | staticpro (&Qbackquote); |
d67b4f80 | 4447 | Qcomma = intern_c_string (","); |
17634846 | 4448 | staticpro (&Qcomma); |
d67b4f80 | 4449 | Qcomma_at = intern_c_string (",@"); |
17634846 | 4450 | staticpro (&Qcomma_at); |
d67b4f80 | 4451 | Qcomma_dot = intern_c_string (",."); |
17634846 RS |
4452 | staticpro (&Qcomma_dot); |
4453 | ||
d67b4f80 | 4454 | Qinhibit_file_name_operation = intern_c_string ("inhibit-file-name-operation"); |
74549846 RS |
4455 | staticpro (&Qinhibit_file_name_operation); |
4456 | ||
d67b4f80 | 4457 | Qascii_character = intern_c_string ("ascii-character"); |
7bd279cd | 4458 | staticpro (&Qascii_character); |
c2225d00 | 4459 | |
d67b4f80 | 4460 | Qfunction = intern_c_string ("function"); |
2b6cae0c RS |
4461 | staticpro (&Qfunction); |
4462 | ||
d67b4f80 | 4463 | Qload = intern_c_string ("load"); |
c2225d00 | 4464 | staticpro (&Qload); |
20ea2964 | 4465 | |
d67b4f80 | 4466 | Qload_file_name = intern_c_string ("load-file-name"); |
20ea2964 | 4467 | staticpro (&Qload_file_name); |
11938f10 | 4468 | |
d67b4f80 | 4469 | Qeval_buffer_list = intern_c_string ("eval-buffer-list"); |
3f39f996 RS |
4470 | staticpro (&Qeval_buffer_list); |
4471 | ||
d67b4f80 | 4472 | Qfile_truename = intern_c_string ("file-truename"); |
6bb6da3e AM |
4473 | staticpro (&Qfile_truename) ; |
4474 | ||
d67b4f80 | 4475 | Qdo_after_load_evaluation = intern_c_string ("do-after-load-evaluation"); |
6bb6da3e AM |
4476 | staticpro (&Qdo_after_load_evaluation) ; |
4477 | ||
11938f10 | 4478 | staticpro (&dump_path); |
4ad679f9 EN |
4479 | |
4480 | staticpro (&read_objects); | |
4481 | read_objects = Qnil; | |
9e062b6c | 4482 | staticpro (&seen_list); |
f153db13 | 4483 | seen_list = Qnil; |
177c0ea7 | 4484 | |
7ee3bd7b GM |
4485 | Vloads_in_progress = Qnil; |
4486 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4487 | |
d67b4f80 | 4488 | Qhash_table = intern_c_string ("hash-table"); |
f19a0f5b | 4489 | staticpro (&Qhash_table); |
d67b4f80 | 4490 | Qdata = intern_c_string ("data"); |
f19a0f5b | 4491 | staticpro (&Qdata); |
d67b4f80 | 4492 | Qtest = intern_c_string ("test"); |
f19a0f5b | 4493 | staticpro (&Qtest); |
d67b4f80 | 4494 | Qsize = intern_c_string ("size"); |
f19a0f5b | 4495 | staticpro (&Qsize); |
d67b4f80 | 4496 | Qweakness = intern_c_string ("weakness"); |
f19a0f5b | 4497 | staticpro (&Qweakness); |
d67b4f80 | 4498 | Qrehash_size = intern_c_string ("rehash-size"); |
f19a0f5b | 4499 | staticpro (&Qrehash_size); |
d67b4f80 | 4500 | Qrehash_threshold = intern_c_string ("rehash-threshold"); |
f19a0f5b | 4501 | staticpro (&Qrehash_threshold); |
078e7b4a | 4502 | } |
6b61353c KH |
4503 | |
4504 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4505 | (do not change this comment) */ |