Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
039c6cc3 | 2 | |
73b0cd50 | 3 | Copyright (C) 1985-1989, 1993-1995, 1997-2011 Free Software Foundation, Inc. |
078e7b4a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
078e7b4a | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
078e7b4a JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
078e7b4a JB |
19 | |
20 | ||
98280b76 | 21 | #include <config.h> |
078e7b4a JB |
22 | #include <stdio.h> |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/file.h> | |
2c1b5dbe | 26 | #include <errno.h> |
b3e6f69c | 27 | #include <setjmp.h> |
078e7b4a | 28 | #include "lisp.h" |
95384e1e | 29 | #include "intervals.h" |
078e7b4a | 30 | #include "buffer.h" |
1571601b | 31 | #include "character.h" |
fe0e03f3 | 32 | #include "charset.h" |
8792be66 | 33 | #include "coding.h" |
57bda87a | 34 | #include <epaths.h> |
078e7b4a | 35 | #include "commands.h" |
e37c0805 | 36 | #include "keyboard.h" |
428a555e | 37 | #include "frame.h" |
7bd279cd | 38 | #include "termhooks.h" |
eb191db2 | 39 | #include "coding.h" |
66cd0949 | 40 | #include "blockinput.h" |
078e7b4a | 41 | |
79051982 | 42 | #ifdef MSDOS |
79051982 RS |
43 | #include "msdos.h" |
44 | #endif | |
45 | ||
c1a2f60a | 46 | #include <unistd.h> |
078e7b4a | 47 | #include <math.h> |
078e7b4a | 48 | |
c011e9a5 RS |
49 | #ifdef HAVE_SETLOCALE |
50 | #include <locale.h> | |
51 | #endif /* HAVE_SETLOCALE */ | |
52 | ||
bcdec28b | 53 | #include <fcntl.h> |
f7d279f0 | 54 | |
79cf851c | 55 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
56 | #define file_offset off_t |
57 | #define file_tell ftello | |
58 | #else | |
59 | #define file_offset long | |
60 | #define file_tell ftell | |
61 | #endif | |
62 | ||
f19a0f5b TZ |
63 | /* hash table read constants */ |
64 | Lisp_Object Qhash_table, Qdata; | |
65 | Lisp_Object Qtest, Qsize; | |
66 | Lisp_Object Qweakness; | |
67 | Lisp_Object Qrehash_size; | |
68 | Lisp_Object Qrehash_threshold; | |
f19a0f5b | 69 | |
8a1f1537 | 70 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
29208e82 | 71 | Lisp_Object Qvariable_documentation; |
20ea2964 | 72 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 73 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 74 | Lisp_Object Qinhibit_file_name_operation; |
29208e82 | 75 | Lisp_Object Qeval_buffer_list; |
6bb6da3e | 76 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 77 | |
8792be66 KH |
78 | /* Used instead of Qget_file_char while loading *.elc files compiled |
79 | by Emacs 21 or older. */ | |
80 | static Lisp_Object Qget_emacs_mule_file_char; | |
81 | ||
82 | static Lisp_Object Qload_force_doc_strings; | |
83 | ||
2baf5e76 | 84 | static Lisp_Object Qload_in_progress; |
ece435a5 | 85 | |
4ad679f9 EN |
86 | /* The association list of objects read with the #n=object form. |
87 | Each member of the list has the form (n . object), and is used to | |
88 | look up the object for the corresponding #n# construct. | |
89 | It must be set to nil before all top-level calls to read0. */ | |
90 | Lisp_Object read_objects; | |
91 | ||
8792be66 KH |
92 | /* Nonzero means READCHAR should read bytes one by one (not character) |
93 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
94 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
95 | static int load_each_byte; | |
96 | ||
d2c6be7f RS |
97 | /* List of descriptors now open for Fload. */ |
98 | static Lisp_Object load_descriptor_list; | |
99 | ||
b2a30870 | 100 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
101 | static FILE *instream; |
102 | ||
103 | /* When nonzero, read conses in pure space */ | |
104 | static int read_pure; | |
105 | ||
b2a30870 | 106 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
da43f021 EZ |
107 | static EMACS_INT read_from_string_index; |
108 | static EMACS_INT read_from_string_index_byte; | |
109 | static EMACS_INT read_from_string_limit; | |
17634846 | 110 | |
abb13b09 CW |
111 | /* Number of characters read in the current call to Fread or |
112 | Fread_from_string. */ | |
da43f021 | 113 | static EMACS_INT readchar_count; |
6f7f43d5 | 114 | |
c15cfd1f | 115 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
116 | static char *saved_doc_string; |
117 | /* Length of buffer allocated in saved_doc_string. */ | |
118 | static int saved_doc_string_size; | |
119 | /* Length of actual data in saved_doc_string. */ | |
120 | static int saved_doc_string_length; | |
121 | /* This is the file position that string came from. */ | |
68c45bf0 | 122 | static file_offset saved_doc_string_position; |
b2a30870 | 123 | |
c15cfd1f RS |
124 | /* This contains the previous string skipped with #@. |
125 | We copy it from saved_doc_string when a new string | |
126 | is put in saved_doc_string. */ | |
127 | static char *prev_saved_doc_string; | |
128 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
129 | static int prev_saved_doc_string_size; | |
130 | /* Length of actual data in prev_saved_doc_string. */ | |
131 | static int prev_saved_doc_string_length; | |
132 | /* This is the file position that string came from. */ | |
68c45bf0 | 133 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 134 | |
17634846 RS |
135 | /* Nonzero means inside a new-style backquote |
136 | with no surrounding parentheses. | |
137 | Fread initializes this to zero, so we need not specbind it | |
138 | or worry about what happens to it when there is an error. */ | |
139 | static int new_backquote_flag; | |
29208e82 | 140 | static Lisp_Object Qold_style_backquotes; |
7ee3bd7b GM |
141 | |
142 | /* A list of file names for files being loaded in Fload. Used to | |
143 | check for recursive loads. */ | |
144 | ||
9942fa0c | 145 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 146 | |
f57e2426 J |
147 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
148 | Lisp_Object); | |
8792be66 | 149 | |
f57e2426 | 150 | static void readevalloop (Lisp_Object, FILE*, Lisp_Object, |
dd4c5104 | 151 | Lisp_Object (*) (Lisp_Object), int, |
f57e2426 J |
152 | Lisp_Object, Lisp_Object, |
153 | Lisp_Object, Lisp_Object); | |
154 | static Lisp_Object load_unwind (Lisp_Object); | |
155 | static Lisp_Object load_descriptor_unwind (Lisp_Object); | |
550a625e | 156 | |
f57e2426 | 157 | static void invalid_syntax (const char *, int) NO_RETURN; |
971de7fb | 158 | static void end_of_file_error (void) NO_RETURN; |
336d4a9c | 159 | |
078e7b4a | 160 | \f |
8792be66 KH |
161 | /* Functions that read one byte from the current source READCHARFUN |
162 | or unreads one byte. If the integer argument C is -1, it returns | |
163 | one read byte, or -1 when there's no more byte in the source. If C | |
164 | is 0 or positive, it unreads C, and the return value is not | |
165 | interesting. */ | |
166 | ||
f57e2426 J |
167 | static int readbyte_for_lambda (int, Lisp_Object); |
168 | static int readbyte_from_file (int, Lisp_Object); | |
169 | static int readbyte_from_string (int, Lisp_Object); | |
8792be66 | 170 | |
078e7b4a JB |
171 | /* Handle unreading and rereading of characters. |
172 | Write READCHAR to read a character, | |
fe0e03f3 KH |
173 | UNREAD(c) to unread c to be read again. |
174 | ||
8792be66 | 175 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 176 | |
1202434b | 177 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
178 | #define UNREAD(c) unreadchar (readcharfun, c) |
179 | ||
1202434b KH |
180 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
181 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
182 | ||
8792be66 | 183 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
184 | Qlambda, or a cons, we use this to keep an unread character because |
185 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
186 | means that there's no unread character. */ |
187 | static int unread_char; | |
188 | ||
078e7b4a | 189 | static int |
971de7fb | 190 | readchar (Lisp_Object readcharfun, int *multibyte) |
078e7b4a JB |
191 | { |
192 | Lisp_Object tem; | |
95384e1e | 193 | register int c; |
f57e2426 | 194 | int (*readbyte) (int, Lisp_Object); |
8792be66 KH |
195 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; |
196 | int i, len; | |
197 | int emacs_mule_encoding = 0; | |
078e7b4a | 198 | |
1202434b KH |
199 | if (multibyte) |
200 | *multibyte = 0; | |
201 | ||
abb13b09 | 202 | readchar_count++; |
177c0ea7 | 203 | |
cfff016d | 204 | if (BUFFERP (readcharfun)) |
078e7b4a | 205 | { |
bed23cb2 | 206 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 207 | |
da43f021 | 208 | EMACS_INT pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 209 | |
bed23cb2 RS |
210 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
211 | return -1; | |
078e7b4a | 212 | |
4b4deea2 | 213 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 214 | { |
00a9a935 | 215 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
216 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
217 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 218 | c = STRING_CHAR (p); |
1202434b KH |
219 | if (multibyte) |
220 | *multibyte = 1; | |
bed23cb2 RS |
221 | } |
222 | else | |
223 | { | |
224 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
225 | if (! ASCII_BYTE_P (c)) |
226 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 227 | pt_byte++; |
6f7f43d5 | 228 | } |
bed23cb2 | 229 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 230 | |
bed23cb2 | 231 | return c; |
078e7b4a | 232 | } |
cfff016d | 233 | if (MARKERP (readcharfun)) |
078e7b4a | 234 | { |
bed23cb2 | 235 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 236 | |
da43f021 | 237 | EMACS_INT bytepos = marker_byte_position (readcharfun); |
00a9a935 | 238 | |
bed23cb2 RS |
239 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
240 | return -1; | |
6f7f43d5 | 241 | |
4b4deea2 | 242 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 243 | { |
00a9a935 | 244 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
245 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
246 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 247 | c = STRING_CHAR (p); |
1202434b KH |
248 | if (multibyte) |
249 | *multibyte = 1; | |
bed23cb2 RS |
250 | } |
251 | else | |
252 | { | |
253 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
254 | if (! ASCII_BYTE_P (c)) |
255 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 256 | bytepos++; |
6f7f43d5 RS |
257 | } |
258 | ||
bed23cb2 RS |
259 | XMARKER (readcharfun)->bytepos = bytepos; |
260 | XMARKER (readcharfun)->charpos++; | |
261 | ||
262 | return c; | |
078e7b4a | 263 | } |
ad0153e4 RS |
264 | |
265 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
266 | { |
267 | readbyte = readbyte_for_lambda; | |
268 | goto read_multibyte; | |
269 | } | |
ad0153e4 | 270 | |
078e7b4a | 271 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 272 | { |
8792be66 KH |
273 | readbyte = readbyte_from_file; |
274 | goto read_multibyte; | |
2c1b5dbe | 275 | } |
078e7b4a | 276 | |
cfff016d | 277 | if (STRINGP (readcharfun)) |
078e7b4a | 278 | { |
bed23cb2 | 279 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 280 | c = -1; |
1202434b KH |
281 | else if (STRING_MULTIBYTE (readcharfun)) |
282 | { | |
283 | if (multibyte) | |
284 | *multibyte = 1; | |
285 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
286 | read_from_string_index, | |
287 | read_from_string_index_byte); | |
288 | } | |
f0354c03 | 289 | else |
1202434b KH |
290 | { |
291 | c = SREF (readcharfun, read_from_string_index_byte); | |
292 | read_from_string_index++; | |
293 | read_from_string_index_byte++; | |
294 | } | |
078e7b4a JB |
295 | return c; |
296 | } | |
297 | ||
8792be66 KH |
298 | if (CONSP (readcharfun)) |
299 | { | |
300 | /* This is the case that read_vector is reading from a unibyte | |
301 | string that contains a byte sequence previously skipped | |
302 | because of #@NUMBER. The car part of readcharfun is that | |
303 | string, and the cdr part is a value of readcharfun given to | |
304 | read_vector. */ | |
305 | readbyte = readbyte_from_string; | |
306 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
307 | emacs_mule_encoding = 1; | |
308 | goto read_multibyte; | |
309 | } | |
8f924df7 | 310 | |
8792be66 KH |
311 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
312 | { | |
313 | readbyte = readbyte_from_file; | |
314 | emacs_mule_encoding = 1; | |
315 | goto read_multibyte; | |
316 | } | |
078e7b4a JB |
317 | |
318 | tem = call0 (readcharfun); | |
319 | ||
265a9e55 | 320 | if (NILP (tem)) |
078e7b4a JB |
321 | return -1; |
322 | return XINT (tem); | |
8792be66 KH |
323 | |
324 | read_multibyte: | |
325 | if (unread_char >= 0) | |
326 | { | |
327 | c = unread_char; | |
328 | unread_char = -1; | |
329 | return c; | |
330 | } | |
331 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
332 | if (c < 0 || load_each_byte) |
333 | return c; | |
334 | if (multibyte) | |
335 | *multibyte = 1; | |
336 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
337 | return c; |
338 | if (emacs_mule_encoding) | |
339 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
340 | i = 0; | |
341 | buf[i++] = c; | |
342 | len = BYTES_BY_CHAR_HEAD (c); | |
343 | while (i < len) | |
344 | { | |
345 | c = (*readbyte) (-1, readcharfun); | |
346 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
347 | { | |
348 | while (--i > 1) | |
349 | (*readbyte) (buf[i], readcharfun); | |
350 | return BYTE8_TO_CHAR (buf[0]); | |
351 | } | |
352 | buf[i++] = c; | |
353 | } | |
62a6e103 | 354 | return STRING_CHAR (buf); |
078e7b4a JB |
355 | } |
356 | ||
357 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
358 | If the stream is a user function, call it with the char as argument. */ | |
359 | ||
360 | static void | |
971de7fb | 361 | unreadchar (Lisp_Object readcharfun, int c) |
078e7b4a | 362 | { |
abb13b09 | 363 | readchar_count--; |
92fddec9 KH |
364 | if (c == -1) |
365 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
366 | since readchar didn't advance it when we read it. */ | |
367 | ; | |
cfff016d | 368 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 369 | { |
bed23cb2 | 370 | struct buffer *b = XBUFFER (readcharfun); |
da43f021 | 371 | EMACS_INT bytepos = BUF_PT_BYTE (b); |
d7760ca9 | 372 | |
8792be66 | 373 | BUF_PT (b)--; |
4b4deea2 | 374 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 375 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 376 | else |
8792be66 | 377 | bytepos--; |
d7760ca9 | 378 | |
8792be66 | 379 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 380 | } |
cfff016d | 381 | else if (MARKERP (readcharfun)) |
d7760ca9 | 382 | { |
bed23cb2 | 383 | struct buffer *b = XMARKER (readcharfun)->buffer; |
da43f021 | 384 | EMACS_INT bytepos = XMARKER (readcharfun)->bytepos; |
d7760ca9 | 385 | |
8792be66 | 386 | XMARKER (readcharfun)->charpos--; |
4b4deea2 | 387 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 388 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 389 | else |
8792be66 | 390 | bytepos--; |
d7760ca9 | 391 | |
8792be66 | 392 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 393 | } |
cfff016d | 394 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
395 | { |
396 | read_from_string_index--; | |
397 | read_from_string_index_byte | |
398 | = string_char_to_byte (readcharfun, read_from_string_index); | |
399 | } | |
8792be66 KH |
400 | else if (CONSP (readcharfun)) |
401 | { | |
402 | unread_char = c; | |
403 | } | |
ad0153e4 | 404 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
405 | { |
406 | unread_char = c; | |
407 | } | |
408 | else if (EQ (readcharfun, Qget_file_char) | |
409 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
410 | { | |
411 | if (load_each_byte) | |
d85d3839 MB |
412 | { |
413 | BLOCK_INPUT; | |
414 | ungetc (c, instream); | |
415 | UNBLOCK_INPUT; | |
416 | } | |
8792be66 KH |
417 | else |
418 | unread_char = c; | |
419 | } | |
078e7b4a JB |
420 | else |
421 | call1 (readcharfun, make_number (c)); | |
422 | } | |
423 | ||
8792be66 | 424 | static int |
971de7fb | 425 | readbyte_for_lambda (int c, Lisp_Object readcharfun) |
8792be66 KH |
426 | { |
427 | return read_bytecode_char (c >= 0); | |
428 | } | |
429 | ||
430 | ||
431 | static int | |
971de7fb | 432 | readbyte_from_file (int c, Lisp_Object readcharfun) |
8792be66 KH |
433 | { |
434 | if (c >= 0) | |
435 | { | |
66cd0949 | 436 | BLOCK_INPUT; |
8792be66 | 437 | ungetc (c, instream); |
66cd0949 | 438 | UNBLOCK_INPUT; |
8792be66 KH |
439 | return 0; |
440 | } | |
441 | ||
d85d3839 | 442 | BLOCK_INPUT; |
8792be66 | 443 | c = getc (instream); |
d85d3839 | 444 | |
8792be66 | 445 | #ifdef EINTR |
d85d3839 MB |
446 | /* Interrupted reads have been observed while reading over the network */ |
447 | while (c == EOF && ferror (instream) && errno == EINTR) | |
448 | { | |
57cb2e6f | 449 | UNBLOCK_INPUT; |
d85d3839 | 450 | QUIT; |
d85d3839 | 451 | BLOCK_INPUT; |
57cb2e6f | 452 | clearerr (instream); |
d85d3839 | 453 | c = getc (instream); |
66cd0949 | 454 | } |
8792be66 | 455 | #endif |
d85d3839 | 456 | |
57cb2e6f MB |
457 | UNBLOCK_INPUT; |
458 | ||
8792be66 KH |
459 | return (c == EOF ? -1 : c); |
460 | } | |
461 | ||
462 | static int | |
971de7fb | 463 | readbyte_from_string (int c, Lisp_Object readcharfun) |
8792be66 KH |
464 | { |
465 | Lisp_Object string = XCAR (readcharfun); | |
466 | ||
467 | if (c >= 0) | |
468 | { | |
469 | read_from_string_index--; | |
470 | read_from_string_index_byte | |
471 | = string_char_to_byte (string, read_from_string_index); | |
472 | } | |
8f924df7 | 473 | |
8792be66 KH |
474 | if (read_from_string_index >= read_from_string_limit) |
475 | c = -1; | |
476 | else | |
477 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
478 | read_from_string_index, | |
479 | read_from_string_index_byte); | |
480 | return c; | |
481 | } | |
482 | ||
483 | ||
484 | /* Read one non-ASCII character from INSTREAM. The character is | |
485 | encoded in `emacs-mule' and the first byte is already read in | |
486 | C. */ | |
487 | ||
8792be66 | 488 | static int |
971de7fb | 489 | read_emacs_mule_char (int c, int (*readbyte) (int, Lisp_Object), Lisp_Object readcharfun) |
8792be66 KH |
490 | { |
491 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
492 | unsigned char buf[4]; | |
493 | int len = emacs_mule_bytes[c]; | |
494 | struct charset *charset; | |
495 | int i; | |
496 | unsigned code; | |
497 | ||
498 | if (len == 1) | |
499 | /* C is not a valid leading-code of `emacs-mule'. */ | |
500 | return BYTE8_TO_CHAR (c); | |
501 | ||
502 | i = 0; | |
503 | buf[i++] = c; | |
504 | while (i < len) | |
505 | { | |
506 | c = (*readbyte) (-1, readcharfun); | |
507 | if (c < 0xA0) | |
508 | { | |
509 | while (--i > 1) | |
510 | (*readbyte) (buf[i], readcharfun); | |
511 | return BYTE8_TO_CHAR (buf[0]); | |
512 | } | |
513 | buf[i++] = c; | |
514 | } | |
515 | ||
516 | if (len == 2) | |
517 | { | |
b84ae584 | 518 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
519 | code = buf[1] & 0x7F; |
520 | } | |
521 | else if (len == 3) | |
522 | { | |
523 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
524 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
525 | { | |
b84ae584 | 526 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8792be66 KH |
527 | code = buf[2] & 0x7F; |
528 | } | |
529 | else | |
530 | { | |
b84ae584 | 531 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
532 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; |
533 | } | |
534 | } | |
535 | else | |
536 | { | |
b84ae584 | 537 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8f924df7 | 538 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
539 | } |
540 | c = DECODE_CHAR (charset, code); | |
541 | if (c < 0) | |
542 | Fsignal (Qinvalid_read_syntax, | |
543 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
544 | return c; | |
545 | } | |
546 | ||
547 | ||
f57e2426 J |
548 | static Lisp_Object read_internal_start (Lisp_Object, Lisp_Object, |
549 | Lisp_Object); | |
550 | static Lisp_Object read0 (Lisp_Object); | |
551 | static Lisp_Object read1 (Lisp_Object, int *, int); | |
abb13b09 | 552 | |
f57e2426 J |
553 | static Lisp_Object read_list (int, Lisp_Object); |
554 | static Lisp_Object read_vector (Lisp_Object, int); | |
abb13b09 | 555 | |
f57e2426 J |
556 | static Lisp_Object substitute_object_recurse (Lisp_Object, Lisp_Object, |
557 | Lisp_Object); | |
558 | static void substitute_object_in_subtree (Lisp_Object, | |
559 | Lisp_Object); | |
560 | static void substitute_in_interval (INTERVAL, Lisp_Object); | |
9e062b6c | 561 | |
078e7b4a | 562 | \f |
bed23cb2 | 563 | /* Get a character from the tty. */ |
078e7b4a | 564 | |
f42be754 JB |
565 | /* Read input events until we get one that's acceptable for our purposes. |
566 | ||
567 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
568 | until we get a character we like, and then stuffed into | |
569 | unread_switch_frame. | |
570 | ||
571 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
572 | if the unmodified version of the symbol has a Qascii_character | |
573 | property, and use that character, if present. | |
574 | ||
575 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
576 | get isn't an ASCII character with modifiers. If it's zero but | |
577 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
578 | character. |
579 | ||
580 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
581 | if the character warrants that. |
582 | ||
583 | If SECONDS is a number, we wait that many seconds for input, and | |
584 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 585 | |
2f7c71a1 | 586 | static Lisp_Object |
d5a3eaaf AS |
587 | read_filtered_event (int no_switch_frame, int ascii_required, |
588 | int error_nonascii, int input_method, Lisp_Object seconds) | |
f42be754 | 589 | { |
4332cf50 | 590 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 591 | EMACS_TIME end_time; |
153a17b7 | 592 | |
5dbf89bc | 593 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
594 | if (display_hourglass_p) |
595 | cancel_hourglass (); | |
5dbf89bc | 596 | #endif |
177c0ea7 | 597 | |
153a17b7 | 598 | delayed_switch_frame = Qnil; |
f42be754 | 599 | |
50e48299 CY |
600 | /* Compute timeout. */ |
601 | if (NUMBERP (seconds)) | |
602 | { | |
603 | EMACS_TIME wait_time; | |
604 | int sec, usec; | |
51d8b30e | 605 | double duration = extract_float (seconds); |
50e48299 CY |
606 | |
607 | sec = (int) duration; | |
608 | usec = (duration - sec) * 1000000; | |
609 | EMACS_GET_TIME (end_time); | |
610 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
611 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
612 | } | |
613 | ||
251bc578 | 614 | /* Read until we get an acceptable event. */ |
f42be754 | 615 | retry: |
88852d45 | 616 | do |
251bc578 KL |
617 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
618 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 619 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 620 | |
cfff016d | 621 | if (BUFFERP (val)) |
6c82d689 KH |
622 | goto retry; |
623 | ||
f42be754 | 624 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 625 | character. This is better than signaling an error just because |
f42be754 JB |
626 | the last characters were typed to a separate minibuffer frame, |
627 | for example. Eventually, some code which can deal with | |
628 | switch-frame events will read it and process it. */ | |
629 | if (no_switch_frame | |
630 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 631 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
632 | { |
633 | delayed_switch_frame = val; | |
634 | goto retry; | |
635 | } | |
636 | ||
50e48299 | 637 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
638 | { |
639 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 640 | if (SYMBOLP (val)) |
f42be754 | 641 | { |
95384e1e | 642 | Lisp_Object tem, tem1; |
f42be754 JB |
643 | tem = Fget (val, Qevent_symbol_element_mask); |
644 | if (!NILP (tem)) | |
645 | { | |
646 | tem1 = Fget (Fcar (tem), Qascii_character); | |
647 | /* Merge this symbol's modifier bits | |
648 | with the ASCII equivalent of its basic code. */ | |
649 | if (!NILP (tem1)) | |
baf69866 | 650 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
651 | } |
652 | } | |
177c0ea7 | 653 | |
f42be754 | 654 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 655 | if (!INTEGERP (val)) |
f42be754 JB |
656 | { |
657 | if (error_nonascii) | |
658 | { | |
1ec84625 | 659 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
660 | error ("Non-character input-event"); |
661 | } | |
662 | else | |
663 | goto retry; | |
664 | } | |
665 | } | |
666 | ||
667 | if (! NILP (delayed_switch_frame)) | |
668 | unread_switch_frame = delayed_switch_frame; | |
669 | ||
67868d27 PJ |
670 | #if 0 |
671 | ||
5dbf89bc | 672 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
673 | if (display_hourglass_p) |
674 | start_hourglass (); | |
5dbf89bc | 675 | #endif |
67868d27 PJ |
676 | |
677 | #endif | |
678 | ||
f42be754 | 679 | return val; |
f42be754 JB |
680 | } |
681 | ||
50e48299 | 682 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
683 | doc: /* Read a character from the command input (keyboard or macro). |
684 | It is returned as a number. | |
fb26c2af KH |
685 | If the character has modifiers, they are resolved and reflected to the |
686 | character code if possible (e.g. C-SPC -> 0). | |
687 | ||
5de38842 PJ |
688 | If the user generates an event which is not a character (i.e. a mouse |
689 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
690 | exception, switch-frame events are put off until non-character events |
691 | can be read. | |
5de38842 PJ |
692 | If you want to read non-character events, or ignore them, call |
693 | `read-event' or `read-char-exclusive' instead. | |
694 | ||
695 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
696 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
697 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
698 | is used for reading a character. |
699 | If the optional argument SECONDS is non-nil, it should be a number | |
700 | specifying the maximum number of seconds to wait for input. If no | |
701 | input arrives in that time, return nil. SECONDS may be a | |
702 | floating-point value. */) | |
5842a27b | 703 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 704 | { |
fb26c2af | 705 | Lisp_Object val; |
fb26c2af | 706 | |
bb49a192 RS |
707 | if (! NILP (prompt)) |
708 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 709 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
710 | |
711 | return (NILP (val) ? Qnil | |
712 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
713 | } |
714 | ||
50e48299 | 715 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
716 | doc: /* Read an event object from the input stream. |
717 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
718 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
719 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
720 | is used for reading a character. |
721 | If the optional argument SECONDS is non-nil, it should be a number | |
722 | specifying the maximum number of seconds to wait for input. If no | |
723 | input arrives in that time, return nil. SECONDS may be a | |
724 | floating-point value. */) | |
5842a27b | 725 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 726 | { |
bb49a192 RS |
727 | if (! NILP (prompt)) |
728 | message_with_string ("%s", prompt, 0); | |
50e48299 | 729 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
730 | } |
731 | ||
50e48299 | 732 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
733 | doc: /* Read a character from the command input (keyboard or macro). |
734 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
735 | If the character has modifiers, they are resolved and reflected to the |
736 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
737 | |
738 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
739 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
740 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
741 | is used for reading a character. |
742 | If the optional argument SECONDS is non-nil, it should be a number | |
743 | specifying the maximum number of seconds to wait for input. If no | |
744 | input arrives in that time, return nil. SECONDS may be a | |
745 | floating-point value. */) | |
5842a27b | 746 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 747 | { |
fb26c2af | 748 | Lisp_Object val; |
fb26c2af | 749 | |
bb49a192 RS |
750 | if (! NILP (prompt)) |
751 | message_with_string ("%s", prompt, 0); | |
66c410ce | 752 | |
fb26c2af | 753 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
754 | |
755 | return (NILP (val) ? Qnil | |
756 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 757 | } |
078e7b4a JB |
758 | |
759 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 | 760 | doc: /* Don't use this yourself. */) |
5842a27b | 761 | (void) |
078e7b4a JB |
762 | { |
763 | register Lisp_Object val; | |
66cd0949 | 764 | BLOCK_INPUT; |
1805de4f | 765 | XSETINT (val, getc (instream)); |
66cd0949 | 766 | UNBLOCK_INPUT; |
078e7b4a JB |
767 | return val; |
768 | } | |
da84f340 GM |
769 | |
770 | ||
550a625e | 771 | \f |
8792be66 | 772 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 773 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
774 | safe to load. Only files compiled with Emacs are safe to load. |
775 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
776 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
777 | |
778 | static int | |
971de7fb | 779 | safe_to_load_p (int fd) |
da84f340 GM |
780 | { |
781 | char buf[512]; | |
782 | int nbytes, i; | |
783 | int safe_p = 1; | |
8f924df7 | 784 | int version = 1; |
da84f340 GM |
785 | |
786 | /* Read the first few bytes from the file, and look for a line | |
787 | specifying the byte compiler version used. */ | |
788 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
789 | if (nbytes > 0) | |
790 | { | |
791 | buf[nbytes] = '\0'; | |
792 | ||
793 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 794 | with NUL bytes following it, but note the version. */ |
da84f340 | 795 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 796 | if (i == 4) |
8792be66 | 797 | version = buf[i]; |
da84f340 | 798 | |
927f12da KH |
799 | if (i == nbytes |
800 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
801 | buf + i) < 0) |
802 | safe_p = 0; | |
803 | } | |
1da3b9e4 DL |
804 | if (safe_p) |
805 | safe_p = version; | |
da84f340 GM |
806 | |
807 | lseek (fd, 0, SEEK_SET); | |
808 | return safe_p; | |
809 | } | |
810 | ||
811 | ||
7ee3bd7b GM |
812 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
813 | after loading a file successfully. */ | |
814 | ||
815 | static Lisp_Object | |
971de7fb | 816 | record_load_unwind (Lisp_Object old) |
7ee3bd7b GM |
817 | { |
818 | return Vloads_in_progress = old; | |
819 | } | |
820 | ||
164c8bfe RS |
821 | /* This handler function is used via internal_condition_case_1. */ |
822 | ||
823 | static Lisp_Object | |
971de7fb | 824 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
825 | { |
826 | return Qnil; | |
827 | } | |
7ee3bd7b | 828 | |
1d064697 | 829 | static Lisp_Object |
971de7fb | 830 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
831 | { |
832 | if (!NILP (Vold_style_backquotes)) | |
833 | { | |
b636b4c1 | 834 | Lisp_Object args[2]; |
18a4a65e | 835 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
836 | args[1] = file; |
837 | Fmessage (2, args); | |
838 | } | |
839 | return Qnil; | |
840 | } | |
841 | ||
971a4293 LT |
842 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
843 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
844 | required. | |
845 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
5842a27b | 846 | (void) |
971a4293 LT |
847 | { |
848 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
849 | while (CONSP (suffixes)) | |
850 | { | |
851 | Lisp_Object exts = Vload_file_rep_suffixes; | |
852 | suffix = XCAR (suffixes); | |
853 | suffixes = XCDR (suffixes); | |
854 | while (CONSP (exts)) | |
855 | { | |
856 | ext = XCAR (exts); | |
857 | exts = XCDR (exts); | |
858 | lst = Fcons (concat2 (suffix, ext), lst); | |
859 | } | |
860 | } | |
861 | return Fnreverse (lst); | |
862 | } | |
863 | ||
f0a50954 | 864 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
865 | doc: /* Execute a file of Lisp code named FILE. |
866 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 867 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 868 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 869 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 870 | This function searches the directories in `load-path'. |
971a4293 | 871 | |
5de38842 | 872 | If optional second arg NOERROR is non-nil, |
971a4293 | 873 | report no error if FILE doesn't exist. |
5de38842 | 874 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
875 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
876 | overrides that). | |
5de38842 | 877 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 878 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 879 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
880 | the suffix `.elc' or `.el'; don't accept just FILE unless |
881 | it ends in one of those suffixes or includes a directory name. | |
882 | ||
883 | If this function fails to find a file, it may look for different | |
884 | representations of that file before trying another file. | |
885 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
886 | to the file name. Emacs uses this feature mainly to find compressed | |
887 | versions of files when Auto Compression mode is enabled. | |
888 | ||
889 | The exact suffixes that this function tries out, in the exact order, | |
890 | are given by the value of the variable `load-file-rep-suffixes' if | |
891 | NOSUFFIX is non-nil and by the return value of the function | |
892 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
893 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
894 | and then the former. | |
0fc213e9 RS |
895 | |
896 | Loading a file records its definitions, and its `provide' and | |
897 | `require' calls, in an element of `load-history' whose | |
898 | car is the file name loaded. See `load-history'. | |
899 | ||
c7926fe2 EZ |
900 | While the file is in the process of being loaded, the variable |
901 | `load-in-progress' is non-nil and the variable `load-file-name' | |
902 | is bound to the file's name. | |
903 | ||
971a4293 | 904 | Return t if the file exists and loads successfully. */) |
5842a27b | 905 | (Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage, Lisp_Object nosuffix, Lisp_Object must_suffix) |
078e7b4a JB |
906 | { |
907 | register FILE *stream; | |
908 | register int fd = -1; | |
aed13378 | 909 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
910 | struct gcpro gcpro1, gcpro2, gcpro3; |
911 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
912 | /* 1 means we printed the ".el is newer" message. */ |
913 | int newer = 0; | |
914 | /* 1 means we are loading a compiled file. */ | |
915 | int compiled = 0; | |
c2225d00 | 916 | Lisp_Object handler; |
456c67a4 | 917 | int safe_p = 1; |
8ea90aa3 | 918 | const char *fmode = "r"; |
6bb6da3e | 919 | Lisp_Object tmp[2]; |
8792be66 KH |
920 | int version; |
921 | ||
317073d5 | 922 | #ifdef DOS_NT |
229ba775 | 923 | fmode = "rt"; |
317073d5 | 924 | #endif /* DOS_NT */ |
078e7b4a | 925 | |
b7826503 | 926 | CHECK_STRING (file); |
078e7b4a | 927 | |
c2225d00 | 928 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
929 | /* This shouldn't be necessary any more now that `openp' handles it right. |
930 | handler = Ffind_file_name_handler (file, Qload); | |
931 | if (!NILP (handler)) | |
932 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 933 | |
07a0bda3 RS |
934 | /* Do this after the handler to avoid |
935 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
936 | (Below here, we care only whether they are nil or not.) |
937 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 938 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
939 | everywhere, it accidentally stayed here. Since then, enough people |
940 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
941 | that it seemed risky to remove. */ | |
164c8bfe RS |
942 | if (! NILP (noerror)) |
943 | { | |
944 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
945 | Qt, load_error_handler); | |
946 | if (NILP (file)) | |
947 | return Qnil; | |
948 | } | |
949 | else | |
950 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 951 | |
07a0bda3 | 952 | |
078e7b4a JB |
953 | /* Avoid weird lossage with null string as arg, |
954 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 955 | if (SCHARS (file) > 0) |
078e7b4a | 956 | { |
d5db4077 | 957 | int size = SBYTES (file); |
211f7dcd | 958 | |
0fc213e9 RS |
959 | found = Qnil; |
960 | GCPRO2 (file, found); | |
211f7dcd RS |
961 | |
962 | if (! NILP (must_suffix)) | |
963 | { | |
964 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
965 | if (size > 3 | |
42a5b22f | 966 | && !strcmp (SSDATA (file) + size - 3, ".el")) |
211f7dcd RS |
967 | must_suffix = Qnil; |
968 | else if (size > 4 | |
42a5b22f | 969 | && !strcmp (SSDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
970 | must_suffix = Qnil; |
971 | /* Don't insist on adding a suffix | |
972 | if the argument includes a directory name. */ | |
973 | else if (! NILP (Ffile_name_directory (file))) | |
974 | must_suffix = Qnil; | |
975 | } | |
976 | ||
f0a50954 | 977 | fd = openp (Vload_path, file, |
e61b9b87 | 978 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
979 | : !NILP (must_suffix) ? Fget_load_suffixes () |
980 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
981 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 982 | tmp))), |
86d00812 | 983 | &found, Qnil); |
5a6e5452 | 984 | UNGCPRO; |
078e7b4a JB |
985 | } |
986 | ||
96dc0f4e | 987 | if (fd == -1) |
078e7b4a | 988 | { |
265a9e55 | 989 | if (NILP (noerror)) |
336d4a9c KS |
990 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
991 | return Qnil; | |
078e7b4a JB |
992 | } |
993 | ||
ba0d1195 | 994 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
995 | if (EQ (Qt, Vuser_init_file)) |
996 | Vuser_init_file = found; | |
997 | ||
96dc0f4e MB |
998 | /* If FD is -2, that means openp found a magic file. */ |
999 | if (fd == -2) | |
74549846 | 1000 | { |
5e24a1f7 KH |
1001 | if (NILP (Fequal (found, file))) |
1002 | /* If FOUND is a different file name from FILE, | |
1003 | find its handler even if we have already inhibited | |
1004 | the `load' operation on FILE. */ | |
1005 | handler = Ffind_file_name_handler (found, Qt); | |
1006 | else | |
1007 | handler = Ffind_file_name_handler (found, Qload); | |
1008 | if (! NILP (handler)) | |
1009 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1010 | } |
1011 | ||
550a625e GM |
1012 | /* Check if we're stuck in a recursive load cycle. |
1013 | ||
1014 | 2000-09-21: It's not possible to just check for the file loaded | |
1015 | being a member of Vloads_in_progress. This fails because of the | |
1016 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1017 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1018 | leads to a certain amount of ``normal'' recursion. |
1019 | ||
1020 | Also, just loading a file recursively is not always an error in | |
1021 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1022 | { |
1023 | int count = 0; | |
1024 | Lisp_Object tem; | |
1025 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
8fc45744 JB |
1026 | if (!NILP (Fequal (found, XCAR (tem))) && (++count > 3)) |
1027 | { | |
1028 | if (fd >= 0) | |
1029 | emacs_close (fd); | |
1030 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1031 | } | |
3ba6fd9a RS |
1032 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1033 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1034 | } | |
7ee3bd7b | 1035 | |
6bb6da3e AM |
1036 | /* Get the name for load-history. */ |
1037 | hist_file_name = (! NILP (Vpurify_flag) | |
1038 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1039 | tmp[1] = Ffile_name_nondirectory (found), | |
1040 | tmp)) | |
1041 | : found) ; | |
1042 | ||
8792be66 | 1043 | version = -1; |
1bb9a689 | 1044 | |
88852d45 | 1045 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1046 | specbind (Qold_style_backquotes, Qnil); |
1047 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1048 | ||
72af86bd | 1049 | if (!memcmp (SDATA (found) + SBYTES (found) - 4, ".elc", 4) |
74327f7a | 1050 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1051 | /* Load .elc files directly, but not when they are |
1052 | remote and have no handler! */ | |
078e7b4a | 1053 | { |
96dc0f4e | 1054 | if (fd != -2) |
da84f340 | 1055 | { |
96dc0f4e MB |
1056 | struct stat s1, s2; |
1057 | int result; | |
da84f340 | 1058 | |
6bb6da3e | 1059 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1060 | |
8792be66 KH |
1061 | if (version < 0 |
1062 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1063 | { |
1064 | safe_p = 0; | |
1065 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1066 | { |
1067 | if (fd >= 0) | |
1068 | emacs_close (fd); | |
1069 | error ("File `%s' was not compiled in Emacs", | |
1070 | SDATA (found)); | |
1071 | } | |
beb0b7f9 | 1072 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1073 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1074 | } | |
04fc68e7 | 1075 | |
96dc0f4e MB |
1076 | compiled = 1; |
1077 | ||
eb191db2 EZ |
1078 | efound = ENCODE_FILE (found); |
1079 | ||
26fbf20b | 1080 | #ifdef DOS_NT |
96dc0f4e | 1081 | fmode = "rb"; |
26fbf20b | 1082 | #endif /* DOS_NT */ |
51b59d79 | 1083 | stat (SSDATA (efound), &s1); |
a1c89c0a | 1084 | SSET (efound, SBYTES (efound) - 1, 0); |
51b59d79 | 1085 | result = stat (SSDATA (efound), &s2); |
a1c89c0a | 1086 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1087 | |
96dc0f4e MB |
1088 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1089 | { | |
1090 | /* Make the progress messages mention that source is newer. */ | |
1091 | newer = 1; | |
04fc68e7 | 1092 | |
96dc0f4e | 1093 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1094 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1095 | { |
0fc213e9 RS |
1096 | Lisp_Object msg_file; |
1097 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1098 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1099 | msg_file, 1); |
714d8c39 | 1100 | } |
96dc0f4e | 1101 | } |
0fc213e9 | 1102 | UNGCPRO; |
51ac6f83 | 1103 | } |
078e7b4a | 1104 | } |
fe0e03f3 KH |
1105 | else |
1106 | { | |
1107 | /* We are loading a source file (*.el). */ | |
1108 | if (!NILP (Vload_source_file_function)) | |
1109 | { | |
7ee3bd7b | 1110 | Lisp_Object val; |
96dc0f4e MB |
1111 | |
1112 | if (fd >= 0) | |
68c45bf0 | 1113 | emacs_close (fd); |
6bb6da3e | 1114 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1115 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1116 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1117 | return unbind_to (count, val); |
fe0e03f3 KH |
1118 | } |
1119 | } | |
078e7b4a | 1120 | |
6bb6da3e | 1121 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1122 | |
229ba775 | 1123 | #ifdef WINDOWSNT |
68c45bf0 | 1124 | emacs_close (fd); |
eb191db2 | 1125 | efound = ENCODE_FILE (found); |
51b59d79 | 1126 | stream = fopen (SSDATA (efound), fmode); |
229ba775 EZ |
1127 | #else /* not WINDOWSNT */ |
1128 | stream = fdopen (fd, fmode); | |
1129 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1130 | if (stream == 0) |
1131 | { | |
68c45bf0 | 1132 | emacs_close (fd); |
d5db4077 | 1133 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1134 | } |
1135 | ||
4b104c41 | 1136 | if (! NILP (Vpurify_flag)) |
ca0a881a | 1137 | Vpreloaded_file_list = Fcons (Fpurecopy(file), Vpreloaded_file_list); |
4b104c41 | 1138 | |
beb0b7f9 | 1139 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1140 | { |
da84f340 GM |
1141 | if (!safe_p) |
1142 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1143 | file, 1); | |
1144 | else if (!compiled) | |
e28552a4 | 1145 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1146 | else if (newer) |
e28552a4 RS |
1147 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1148 | file, 1); | |
db5cae4b | 1149 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1150 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1151 | } |
078e7b4a | 1152 | |
c04d9e70 | 1153 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1154 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1155 | specbind (Qload_file_name, found); |
74549846 | 1156 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1157 | load_descriptor_list |
1158 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
2baf5e76 | 1159 | specbind (Qload_in_progress, Qt); |
ab2a47e1 | 1160 | if (! version || version >= 22) |
b883cdb2 | 1161 | readevalloop (Qget_file_char, stream, hist_file_name, |
6a2bd1a5 | 1162 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1163 | else |
1164 | { | |
1165 | /* We can't handle a file which was compiled with | |
1166 | byte-compile-dynamic by older version of Emacs. */ | |
1167 | specbind (Qload_force_doc_strings, Qt); | |
b883cdb2 | 1168 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, Feval, |
768d4533 | 1169 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1170 | } |
078e7b4a JB |
1171 | unbind_to (count, Qnil); |
1172 | ||
6bb6da3e | 1173 | /* Run any eval-after-load forms for this file */ |
428b13d6 | 1174 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1175 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1176 | ||
078e7b4a JB |
1177 | UNGCPRO; |
1178 | ||
97dead2d | 1179 | xfree (saved_doc_string); |
b2a30870 RS |
1180 | saved_doc_string = 0; |
1181 | saved_doc_string_size = 0; | |
1182 | ||
70fdbb46 | 1183 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1184 | prev_saved_doc_string = 0; |
1185 | prev_saved_doc_string_size = 0; | |
1186 | ||
beb0b7f9 | 1187 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1188 | { |
da84f340 GM |
1189 | if (!safe_p) |
1190 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1191 | file, 1); | |
1192 | else if (!compiled) | |
e28552a4 | 1193 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1194 | else if (newer) |
e28552a4 RS |
1195 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1196 | file, 1); | |
db5cae4b | 1197 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1198 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1199 | } |
7ee3bd7b | 1200 | |
078e7b4a JB |
1201 | return Qt; |
1202 | } | |
1203 | ||
1204 | static Lisp_Object | |
971de7fb | 1205 | load_unwind (Lisp_Object arg) /* used as unwind-protect function in load */ |
078e7b4a | 1206 | { |
ebfe97a2 KS |
1207 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1208 | if (stream != NULL) | |
66cd0949 YM |
1209 | { |
1210 | BLOCK_INPUT; | |
1211 | fclose (stream); | |
1212 | UNBLOCK_INPUT; | |
1213 | } | |
078e7b4a JB |
1214 | return Qnil; |
1215 | } | |
1216 | ||
d2c6be7f | 1217 | static Lisp_Object |
971de7fb | 1218 | load_descriptor_unwind (Lisp_Object oldlist) |
d2c6be7f RS |
1219 | { |
1220 | load_descriptor_list = oldlist; | |
838abf56 | 1221 | return Qnil; |
d2c6be7f RS |
1222 | } |
1223 | ||
1224 | /* Close all descriptors in use for Floads. | |
1225 | This is used when starting a subprocess. */ | |
1226 | ||
1227 | void | |
971de7fb | 1228 | close_load_descs (void) |
d2c6be7f | 1229 | { |
f3849f25 | 1230 | #ifndef WINDOWSNT |
d2c6be7f | 1231 | Lisp_Object tail; |
9beb8baa | 1232 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1233 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1234 | #endif |
d2c6be7f | 1235 | } |
078e7b4a JB |
1236 | \f |
1237 | static int | |
971de7fb | 1238 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1239 | { |
4b2dd274 | 1240 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1241 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1242 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1243 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1244 | } |
1245 | ||
86d00812 SM |
1246 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1247 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1248 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1249 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1250 | file name when searching. | |
1251 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1252 | PREDICATE can also be an integer to pass to the access(2) function, | |
1253 | in which case file-name-handlers are ignored. */) | |
5842a27b | 1254 | (Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate) |
86d00812 SM |
1255 | { |
1256 | Lisp_Object file; | |
1257 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1258 | if (NILP (predicate) && fd > 0) | |
1259 | close (fd); | |
1260 | return file; | |
1261 | } | |
1262 | ||
1263 | ||
078e7b4a JB |
1264 | /* Search for a file whose name is STR, looking in directories |
1265 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1266 | On success, returns a file descriptor. On failure, returns -1. |
1267 | ||
e61b9b87 | 1268 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1269 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1270 | |
86d00812 SM |
1271 | PREDICATE non-nil means don't open the files, |
1272 | just look for one that satisfies the predicate. In this case, | |
1273 | returns 1 on success. The predicate can be a lisp function or | |
1274 | an integer to pass to `access' (in which case file-name-handlers | |
1275 | are ignored). | |
078e7b4a JB |
1276 | |
1277 | If STOREPTR is nonzero, it points to a slot where the name of | |
1278 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1279 | nil is stored there on failure. |
1280 | ||
96dc0f4e | 1281 | If the file we find is remote, return -2 |
86d00812 | 1282 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1283 | |
1284 | int | |
971de7fb | 1285 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate) |
078e7b4a JB |
1286 | { |
1287 | register int fd; | |
1288 | int fn_size = 100; | |
1289 | char buf[100]; | |
1290 | register char *fn = buf; | |
1291 | int absolute = 0; | |
1292 | int want_size; | |
74549846 | 1293 | Lisp_Object filename; |
078e7b4a | 1294 | struct stat st; |
eb191db2 EZ |
1295 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1296 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1297 | int max_suffix_len = 0; |
1298 | ||
6f8eafd1 SM |
1299 | CHECK_STRING (str); |
1300 | ||
e61b9b87 SM |
1301 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1302 | { | |
f5df591a | 1303 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1304 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1305 | SBYTES (XCAR (tail))); |
e61b9b87 | 1306 | } |
078e7b4a | 1307 | |
8b9d426a | 1308 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1309 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1310 | ||
078e7b4a JB |
1311 | if (storeptr) |
1312 | *storeptr = Qnil; | |
1313 | ||
1314 | if (complete_filename_p (str)) | |
1315 | absolute = 1; | |
1316 | ||
e61b9b87 | 1317 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1318 | { |
e61b9b87 | 1319 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1320 | if (!complete_filename_p (filename)) |
1321 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1322 | /* Of course, this could conceivably lose if luser sets | |
1323 | default-directory to be something non-absolute... */ | |
1324 | { | |
4b4deea2 | 1325 | filename = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
078e7b4a JB |
1326 | if (!complete_filename_p (filename)) |
1327 | /* Give up on this path element! */ | |
1328 | continue; | |
1329 | } | |
1330 | ||
1331 | /* Calculate maximum size of any filename made from | |
1332 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1333 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1334 | if (fn_size < want_size) |
1335 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1336 | ||
078e7b4a | 1337 | /* Loop over suffixes. */ |
a74d1c97 | 1338 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1339 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1340 | { |
d5db4077 | 1341 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1342 | Lisp_Object handler; |
eb191db2 | 1343 | int exists; |
078e7b4a | 1344 | |
c49afcd7 RS |
1345 | /* Concatenate path element/specified name with the suffix. |
1346 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1347 | if (SCHARS (filename) > 2 |
1348 | && SREF (filename, 0) == '/' | |
1349 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1350 | { |
42a5b22f | 1351 | strncpy (fn, SSDATA (filename) + 2, |
d5db4077 KR |
1352 | SBYTES (filename) - 2); |
1353 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1354 | } |
1355 | else | |
1356 | { | |
42a5b22f | 1357 | strncpy (fn, SSDATA (filename), |
d5db4077 KR |
1358 | SBYTES (filename)); |
1359 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1360 | } |
1361 | ||
078e7b4a | 1362 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
42a5b22f | 1363 | strncat (fn, SSDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1364 | |
74549846 | 1365 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1366 | /* We used to only check for handlers on non-absolute file names: |
1367 | if (absolute) | |
1368 | handler = Qnil; | |
1369 | else | |
1370 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1371 | It's not clear why that was the case and it breaks things like | |
1372 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1373 | string = build_string (fn); |
4773b8ca | 1374 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1375 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1376 | { | |
1377 | if (NILP (predicate)) | |
1378 | exists = !NILP (Ffile_readable_p (string)); | |
1379 | else | |
1380 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1381 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1382 | exists = 0; |
1383 | ||
1384 | if (exists) | |
078e7b4a JB |
1385 | { |
1386 | /* We succeeded; return this descriptor and filename. */ | |
1387 | if (storeptr) | |
eb191db2 | 1388 | *storeptr = string; |
5ef2a3c0 | 1389 | UNGCPRO; |
96dc0f4e | 1390 | return -2; |
74549846 RS |
1391 | } |
1392 | } | |
1393 | else | |
1394 | { | |
4b2dd274 | 1395 | const char *pfn; |
eb191db2 EZ |
1396 | |
1397 | encoded_fn = ENCODE_FILE (string); | |
42a5b22f | 1398 | pfn = SSDATA (encoded_fn); |
eb191db2 EZ |
1399 | exists = (stat (pfn, &st) >= 0 |
1400 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1401 | if (exists) |
1402 | { | |
1403 | /* Check that we can access or open it. */ | |
86d00812 SM |
1404 | if (NATNUMP (predicate)) |
1405 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1406 | else |
eb191db2 | 1407 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1408 | |
1409 | if (fd >= 0) | |
1410 | { | |
1411 | /* We succeeded; return this descriptor and filename. */ | |
1412 | if (storeptr) | |
eb191db2 | 1413 | *storeptr = string; |
74549846 RS |
1414 | UNGCPRO; |
1415 | return fd; | |
1416 | } | |
078e7b4a JB |
1417 | } |
1418 | } | |
078e7b4a | 1419 | } |
5a6e5452 | 1420 | if (absolute) |
5ef2a3c0 | 1421 | break; |
078e7b4a JB |
1422 | } |
1423 | ||
5ef2a3c0 KH |
1424 | UNGCPRO; |
1425 | return -1; | |
078e7b4a JB |
1426 | } |
1427 | ||
1428 | \f | |
ae321d28 RS |
1429 | /* Merge the list we've accumulated of globals from the current input source |
1430 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1431 | the source has an associated file name or not. |
1432 | ||
1433 | FILENAME is the file name that we are loading from. | |
1434 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1435 | |
1436 | static void | |
971de7fb | 1437 | build_load_history (Lisp_Object filename, int entire) |
ae321d28 RS |
1438 | { |
1439 | register Lisp_Object tail, prev, newelt; | |
1440 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1441 | register int foundit = 0; |
ae321d28 RS |
1442 | |
1443 | tail = Vload_history; | |
1444 | prev = Qnil; | |
b502a9a1 | 1445 | |
86d00812 | 1446 | while (CONSP (tail)) |
ae321d28 | 1447 | { |
86d00812 | 1448 | tem = XCAR (tail); |
ae321d28 RS |
1449 | |
1450 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1451 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1452 | { |
1453 | foundit = 1; | |
1454 | ||
b502a9a1 RS |
1455 | /* If we're loading the entire file, remove old data. */ |
1456 | if (entire) | |
86d00812 | 1457 | { |
ae321d28 | 1458 | if (NILP (prev)) |
86d00812 | 1459 | Vload_history = XCDR (tail); |
ae321d28 | 1460 | else |
86d00812 | 1461 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1462 | } |
1463 | ||
1464 | /* Otherwise, cons on new symbols that are not already members. */ | |
1465 | else | |
1466 | { | |
1467 | tem2 = Vcurrent_load_list; | |
1468 | ||
1469 | while (CONSP (tem2)) | |
1470 | { | |
86d00812 | 1471 | newelt = XCAR (tem2); |
ae321d28 | 1472 | |
d642e4f9 | 1473 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1474 | Fsetcar (tail, Fcons (XCAR (tem), |
1475 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1476 | |
86d00812 | 1477 | tem2 = XCDR (tem2); |
ae321d28 RS |
1478 | QUIT; |
1479 | } | |
1480 | } | |
1481 | } | |
1482 | else | |
1483 | prev = tail; | |
86d00812 | 1484 | tail = XCDR (tail); |
ae321d28 RS |
1485 | QUIT; |
1486 | } | |
1487 | ||
b502a9a1 RS |
1488 | /* If we're loading an entire file, cons the new assoc onto the |
1489 | front of load-history, the most-recently-loaded position. Also | |
1490 | do this if we didn't find an existing member for the file. */ | |
1491 | if (entire || !foundit) | |
8a1f1537 RS |
1492 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1493 | Vload_history); | |
ae321d28 RS |
1494 | } |
1495 | ||
7d383292 | 1496 | static Lisp_Object |
971de7fb | 1497 | unreadpure (Lisp_Object junk) /* Used as unwind-protect function in readevalloop */ |
078e7b4a JB |
1498 | { |
1499 | read_pure = 0; | |
1500 | return Qnil; | |
1501 | } | |
1502 | ||
94e554db | 1503 | static Lisp_Object |
971de7fb | 1504 | readevalloop_1 (Lisp_Object old) |
94e554db RS |
1505 | { |
1506 | load_convert_to_unibyte = ! NILP (old); | |
1507 | return Qnil; | |
1508 | } | |
1509 | ||
9c97398c GM |
1510 | /* Signal an `end-of-file' error, if possible with file name |
1511 | information. */ | |
1512 | ||
1513 | static void | |
971de7fb | 1514 | end_of_file_error (void) |
9c97398c | 1515 | { |
9c97398c | 1516 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1517 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1518 | |
336d4a9c | 1519 | xsignal0 (Qend_of_file); |
9c97398c GM |
1520 | } |
1521 | ||
94e554db | 1522 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1523 | for this invocation. |
4c03c46d | 1524 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1525 | |
1526 | START, END specify region to read in current buffer (from eval-region). | |
1527 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1528 | |
078e7b4a | 1529 | static void |
dd4c5104 DN |
1530 | readevalloop (Lisp_Object readcharfun, |
1531 | FILE *stream, | |
1532 | Lisp_Object sourcename, | |
1533 | Lisp_Object (*evalfun) (Lisp_Object), | |
1534 | int printflag, | |
1535 | Lisp_Object unibyte, Lisp_Object readfun, | |
1536 | Lisp_Object start, Lisp_Object end) | |
078e7b4a JB |
1537 | { |
1538 | register int c; | |
1539 | register Lisp_Object val; | |
aed13378 | 1540 | int count = SPECPDL_INDEX (); |
0a37f512 | 1541 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1542 | struct buffer *b = 0; |
f38952fe | 1543 | int continue_reading_p; |
d11db2c8 RS |
1544 | /* Nonzero if reading an entire buffer. */ |
1545 | int whole_buffer = 0; | |
1546 | /* 1 on the first time around. */ | |
1547 | int first_sexp = 1; | |
1548 | ||
1549 | if (MARKERP (readcharfun)) | |
1550 | { | |
1551 | if (NILP (start)) | |
8878319c | 1552 | start = readcharfun; |
d11db2c8 | 1553 | } |
49cf7ff4 RS |
1554 | |
1555 | if (BUFFERP (readcharfun)) | |
1556 | b = XBUFFER (readcharfun); | |
1557 | else if (MARKERP (readcharfun)) | |
1558 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1559 | |
1ed7b9ae RS |
1560 | /* We assume START is nil when input is not from a buffer. */ |
1561 | if (! NILP (start) && !b) | |
1562 | abort (); | |
1563 | ||
0a37f512 | 1564 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1565 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1566 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1567 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1568 | |
0a37f512 | 1569 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1570 | |
6bb6da3e AM |
1571 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1572 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1573 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1574 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1575 | sourcename = call1 (Qfile_truename, sourcename) ; |
1576 | ||
ae321d28 RS |
1577 | LOADHIST_ATTACH (sourcename); |
1578 | ||
f38952fe GM |
1579 | continue_reading_p = 1; |
1580 | while (continue_reading_p) | |
078e7b4a | 1581 | { |
4c03c46d KS |
1582 | int count1 = SPECPDL_INDEX (); |
1583 | ||
4b4deea2 | 1584 | if (b != 0 && NILP (BVAR (b, name))) |
49cf7ff4 RS |
1585 | error ("Reading from killed buffer"); |
1586 | ||
4c03c46d KS |
1587 | if (!NILP (start)) |
1588 | { | |
721b7d9e | 1589 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1590 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1591 | set_buffer_internal (b); |
1592 | ||
1593 | /* Save point in it. */ | |
4c03c46d | 1594 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1595 | /* Save ZV in it. */ |
4c03c46d | 1596 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1597 | /* Those get unbound after we read one expression. */ |
1598 | ||
1599 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1600 | Fgoto_char (start); |
d11db2c8 RS |
1601 | if (!NILP (end)) |
1602 | Fnarrow_to_region (make_number (BEGV), end); | |
1603 | ||
1604 | /* Just for cleanliness, convert END to a marker | |
1605 | if it is an integer. */ | |
1606 | if (INTEGERP (end)) | |
1607 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1608 | } |
1609 | ||
d11db2c8 RS |
1610 | /* On the first cycle, we can easily test here |
1611 | whether we are reading the whole buffer. */ | |
1612 | if (b && first_sexp) | |
1613 | whole_buffer = (PT == BEG && ZV == Z); | |
1614 | ||
078e7b4a | 1615 | instream = stream; |
4c03c46d | 1616 | read_next: |
078e7b4a JB |
1617 | c = READCHAR; |
1618 | if (c == ';') | |
1619 | { | |
1620 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1621 | goto read_next; |
1622 | } | |
1623 | if (c < 0) | |
1624 | { | |
1625 | unbind_to (count1, Qnil); | |
1626 | break; | |
078e7b4a | 1627 | } |
6069d957 RS |
1628 | |
1629 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1630 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1631 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1632 | goto read_next; |
078e7b4a | 1633 | |
265a9e55 | 1634 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1635 | { |
1636 | record_unwind_protect (unreadpure, Qnil); | |
1637 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1638 | } |
1639 | else | |
1640 | { | |
1641 | UNREAD (c); | |
4ad679f9 | 1642 | read_objects = Qnil; |
f38952fe GM |
1643 | if (!NILP (readfun)) |
1644 | { | |
1645 | val = call1 (readfun, readcharfun); | |
1646 | ||
1647 | /* If READCHARFUN has set point to ZV, we should | |
1648 | stop reading, even if the form read sets point | |
1649 | to a different value when evaluated. */ | |
1650 | if (BUFFERP (readcharfun)) | |
1651 | { | |
1652 | struct buffer *b = XBUFFER (readcharfun); | |
1653 | if (BUF_PT (b) == BUF_ZV (b)) | |
1654 | continue_reading_p = 0; | |
1655 | } | |
1656 | } | |
976350af | 1657 | else if (! NILP (Vload_read_function)) |
84a15045 | 1658 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1659 | else |
abb13b09 | 1660 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1661 | } |
1662 | ||
4c03c46d KS |
1663 | if (!NILP (start) && continue_reading_p) |
1664 | start = Fpoint_marker (); | |
d11db2c8 RS |
1665 | |
1666 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1667 | unbind_to (count1, Qnil); |
1668 | ||
d11db2c8 | 1669 | /* Now eval what we just read. */ |
078e7b4a | 1670 | val = (*evalfun) (val); |
f38952fe | 1671 | |
078e7b4a JB |
1672 | if (printflag) |
1673 | { | |
1674 | Vvalues = Fcons (val, Vvalues); | |
1675 | if (EQ (Vstandard_output, Qt)) | |
1676 | Fprin1 (val, Qnil); | |
1677 | else | |
1678 | Fprint (val, Qnil); | |
1679 | } | |
d11db2c8 RS |
1680 | |
1681 | first_sexp = 0; | |
078e7b4a JB |
1682 | } |
1683 | ||
8878319c | 1684 | build_load_history (sourcename, |
d11db2c8 | 1685 | stream || whole_buffer); |
b502a9a1 | 1686 | |
ae321d28 RS |
1687 | UNGCPRO; |
1688 | ||
078e7b4a JB |
1689 | unbind_to (count, Qnil); |
1690 | } | |
1691 | ||
1076254d | 1692 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1693 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1694 | When called from a Lisp program (i.e., not interactively), this |
1695 | function accepts up to five optional arguments: | |
5de38842 PJ |
1696 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1697 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1698 | A value of nil means discard it; anything else is stream for print. |
1699 | FILENAME specifies the file name to use for `load-history'. | |
1700 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1701 | invocation. | |
1702 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1703 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1704 | |
1705 | This function preserves the position of point. */) | |
5842a27b | 1706 | (Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print) |
228d4b1c | 1707 | { |
aed13378 | 1708 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1709 | Lisp_Object tem, buf; |
1710 | ||
9391b698 | 1711 | if (NILP (buffer)) |
228d4b1c JA |
1712 | buf = Fcurrent_buffer (); |
1713 | else | |
9391b698 | 1714 | buf = Fget_buffer (buffer); |
dfdb645c | 1715 | if (NILP (buf)) |
13febd85 | 1716 | error ("No such buffer"); |
228d4b1c | 1717 | |
1076254d | 1718 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1719 | tem = Qsymbolp; |
1720 | else | |
1721 | tem = printflag; | |
13febd85 RS |
1722 | |
1723 | if (NILP (filename)) | |
4b4deea2 | 1724 | filename = BVAR (XBUFFER (buf), filename); |
13febd85 | 1725 | |
3f39f996 | 1726 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1727 | specbind (Qstandard_output, tem); |
1728 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1729 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
4c03c46d KS |
1730 | readevalloop (buf, 0, filename, Feval, |
1731 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1732 | unbind_to (count, Qnil); |
228d4b1c JA |
1733 | |
1734 | return Qnil; | |
1735 | } | |
1736 | ||
976350af | 1737 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1738 | doc: /* Execute the region as Lisp code. |
1739 | When called from programs, expects two arguments, | |
1740 | giving starting and ending indices in the current buffer | |
1741 | of the text to be executed. | |
1742 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1743 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1744 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1745 | instead of `read' to read each expression. It gets one argument | |
1746 | which is the input stream for reading characters. | |
1747 | ||
1748 | This function does not move point. */) | |
5842a27b | 1749 | (Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function) |
078e7b4a | 1750 | { |
aed13378 | 1751 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1752 | Lisp_Object tem, cbuf; |
1753 | ||
1754 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1755 | |
265a9e55 | 1756 | if (NILP (printflag)) |
078e7b4a JB |
1757 | tem = Qsymbolp; |
1758 | else | |
1759 | tem = printflag; | |
1760 | specbind (Qstandard_output, tem); | |
3f39f996 | 1761 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1762 | |
4c03c46d | 1763 | /* readevalloop calls functions which check the type of start and end. */ |
4b4deea2 | 1764 | readevalloop (cbuf, 0, BVAR (XBUFFER (cbuf), filename), Feval, |
4c03c46d KS |
1765 | !NILP (printflag), Qnil, read_function, |
1766 | start, end); | |
078e7b4a JB |
1767 | |
1768 | return unbind_to (count, Qnil); | |
1769 | } | |
1770 | ||
078e7b4a JB |
1771 | \f |
1772 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1773 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1774 | If STREAM is nil, use the value of `standard-input' (which see). | |
1775 | STREAM or the value of `standard-input' may be: | |
1776 | a buffer (read from point and advance it) | |
1777 | a marker (read from where it points and advance it) | |
1778 | a function (call it with no arguments for each character, | |
1779 | call it with a char as argument to push a char back) | |
1780 | a string (takes text from string, starting at the beginning) | |
1781 | t (read text line using minibuffer and use it, or read from | |
1782 | standard input in batch mode). */) | |
5842a27b | 1783 | (Lisp_Object stream) |
078e7b4a | 1784 | { |
5be02dff KH |
1785 | if (NILP (stream)) |
1786 | stream = Vstandard_input; | |
1787 | if (EQ (stream, Qt)) | |
1788 | stream = Qread_char; | |
5be02dff | 1789 | if (EQ (stream, Qread_char)) |
078e7b4a | 1790 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1791 | |
abb13b09 | 1792 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1793 | } |
1794 | ||
1795 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1796 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1797 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1798 | START and END optionally delimit a substring of STRING from which to read; | |
1799 | they default to 0 and (length STRING) respectively. */) | |
5842a27b | 1800 | (Lisp_Object string, Lisp_Object start, Lisp_Object end) |
078e7b4a | 1801 | { |
2530ceaf | 1802 | Lisp_Object ret; |
b7826503 | 1803 | CHECK_STRING (string); |
2530ceaf CW |
1804 | /* read_internal_start sets read_from_string_index. */ |
1805 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1806 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1807 | } |
078e7b4a | 1808 | |
abb13b09 CW |
1809 | /* Function to set up the global context we need in toplevel read |
1810 | calls. */ | |
1811 | static Lisp_Object | |
971de7fb | 1812 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
b8ce688b | 1813 | /* start, end only used when stream is a string. */ |
abb13b09 CW |
1814 | { |
1815 | Lisp_Object retval; | |
078e7b4a | 1816 | |
abb13b09 | 1817 | readchar_count = 0; |
17634846 | 1818 | new_backquote_flag = 0; |
4ad679f9 | 1819 | read_objects = Qnil; |
abb13b09 CW |
1820 | if (EQ (Vread_with_symbol_positions, Qt) |
1821 | || EQ (Vread_with_symbol_positions, stream)) | |
1822 | Vread_symbol_positions_list = Qnil; | |
1823 | ||
8f924df7 KH |
1824 | if (STRINGP (stream) |
1825 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 | 1826 | { |
da43f021 | 1827 | EMACS_INT startval, endval; |
8f924df7 | 1828 | Lisp_Object string; |
078e7b4a | 1829 | |
8f924df7 KH |
1830 | if (STRINGP (stream)) |
1831 | string = stream; | |
1832 | else | |
1833 | string = XCAR (stream); | |
078e7b4a | 1834 | |
abb13b09 | 1835 | if (NILP (end)) |
8f924df7 | 1836 | endval = SCHARS (string); |
abb13b09 CW |
1837 | else |
1838 | { | |
1839 | CHECK_NUMBER (end); | |
1840 | endval = XINT (end); | |
8f924df7 KH |
1841 | if (endval < 0 || endval > SCHARS (string)) |
1842 | args_out_of_range (string, end); | |
abb13b09 | 1843 | } |
17634846 | 1844 | |
abb13b09 CW |
1845 | if (NILP (start)) |
1846 | startval = 0; | |
1847 | else | |
1848 | { | |
1849 | CHECK_NUMBER (start); | |
1850 | startval = XINT (start); | |
1851 | if (startval < 0 || startval > endval) | |
8f924df7 | 1852 | args_out_of_range (string, start); |
abb13b09 CW |
1853 | } |
1854 | read_from_string_index = startval; | |
8f924df7 | 1855 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
1856 | read_from_string_limit = endval; |
1857 | } | |
177c0ea7 | 1858 | |
abb13b09 CW |
1859 | retval = read0 (stream); |
1860 | if (EQ (Vread_with_symbol_positions, Qt) | |
1861 | || EQ (Vread_with_symbol_positions, stream)) | |
1862 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1863 | return retval; | |
078e7b4a JB |
1864 | } |
1865 | \f | |
336d4a9c KS |
1866 | |
1867 | /* Signal Qinvalid_read_syntax error. | |
1868 | S is error string of length N (if > 0) */ | |
1869 | ||
1870 | static void | |
971de7fb | 1871 | invalid_syntax (const char *s, int n) |
336d4a9c KS |
1872 | { |
1873 | if (!n) | |
1874 | n = strlen (s); | |
1875 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
1876 | } | |
1877 | ||
1878 | ||
6428369f KH |
1879 | /* Use this for recursive reads, in contexts where internal tokens |
1880 | are not allowed. */ | |
e28552a4 | 1881 | |
078e7b4a | 1882 | static Lisp_Object |
971de7fb | 1883 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
1884 | { |
1885 | register Lisp_Object val; | |
e28552a4 | 1886 | int c; |
078e7b4a | 1887 | |
17634846 | 1888 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
1889 | if (!c) |
1890 | return val; | |
078e7b4a | 1891 | |
336d4a9c KS |
1892 | xsignal1 (Qinvalid_read_syntax, |
1893 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
1894 | } |
1895 | \f | |
1896 | static int read_buffer_size; | |
1897 | static char *read_buffer; | |
1898 | ||
f6f79b37 | 1899 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 1900 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 1901 | |
078e7b4a | 1902 | static int |
971de7fb | 1903 | read_escape (Lisp_Object readcharfun, int stringp) |
078e7b4a JB |
1904 | { |
1905 | register int c = READCHAR; | |
9735b9ce | 1906 | /* \u allows up to four hex digits, \U up to eight. Default to the |
fffa137c | 1907 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 1908 | int unicode_hex_count = 4; |
f6f79b37 | 1909 | |
078e7b4a JB |
1910 | switch (c) |
1911 | { | |
f3849f25 | 1912 | case -1: |
da3b886d | 1913 | end_of_file_error (); |
f3849f25 | 1914 | |
078e7b4a | 1915 | case 'a': |
265a9e55 | 1916 | return '\007'; |
078e7b4a JB |
1917 | case 'b': |
1918 | return '\b'; | |
f405a585 RS |
1919 | case 'd': |
1920 | return 0177; | |
078e7b4a JB |
1921 | case 'e': |
1922 | return 033; | |
1923 | case 'f': | |
1924 | return '\f'; | |
1925 | case 'n': | |
1926 | return '\n'; | |
1927 | case 'r': | |
1928 | return '\r'; | |
1929 | case 't': | |
1930 | return '\t'; | |
1931 | case 'v': | |
1932 | return '\v'; | |
1933 | case '\n': | |
1934 | return -1; | |
e28552a4 | 1935 | case ' ': |
e7fc914b KH |
1936 | if (stringp) |
1937 | return -1; | |
1938 | return ' '; | |
078e7b4a JB |
1939 | |
1940 | case 'M': | |
1941 | c = READCHAR; | |
1942 | if (c != '-') | |
1943 | error ("Invalid escape character syntax"); | |
1944 | c = READCHAR; | |
1945 | if (c == '\\') | |
8792be66 | 1946 | c = read_escape (readcharfun, 0); |
7bd279cd | 1947 | return c | meta_modifier; |
f405a585 RS |
1948 | |
1949 | case 'S': | |
1950 | c = READCHAR; | |
1951 | if (c != '-') | |
1952 | error ("Invalid escape character syntax"); | |
1953 | c = READCHAR; | |
1954 | if (c == '\\') | |
8792be66 | 1955 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1956 | return c | shift_modifier; |
1957 | ||
1958 | case 'H': | |
1959 | c = READCHAR; | |
1960 | if (c != '-') | |
1961 | error ("Invalid escape character syntax"); | |
1962 | c = READCHAR; | |
1963 | if (c == '\\') | |
8792be66 | 1964 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1965 | return c | hyper_modifier; |
1966 | ||
1967 | case 'A': | |
1968 | c = READCHAR; | |
1969 | if (c != '-') | |
1970 | error ("Invalid escape character syntax"); | |
1971 | c = READCHAR; | |
1972 | if (c == '\\') | |
8792be66 | 1973 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1974 | return c | alt_modifier; |
1975 | ||
1976 | case 's': | |
1977 | c = READCHAR; | |
4d7528d0 | 1978 | if (stringp || c != '-') |
010b7eac RS |
1979 | { |
1980 | UNREAD (c); | |
1981 | return ' '; | |
1982 | } | |
7bd279cd RS |
1983 | c = READCHAR; |
1984 | if (c == '\\') | |
8792be66 | 1985 | c = read_escape (readcharfun, 0); |
7bd279cd | 1986 | return c | super_modifier; |
078e7b4a JB |
1987 | |
1988 | case 'C': | |
1989 | c = READCHAR; | |
1990 | if (c != '-') | |
1991 | error ("Invalid escape character syntax"); | |
1992 | case '^': | |
1993 | c = READCHAR; | |
1994 | if (c == '\\') | |
8792be66 | 1995 | c = read_escape (readcharfun, 0); |
164d590d KH |
1996 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1997 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1998 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1999 | return c | ctrl_modifier; | |
f405a585 RS |
2000 | /* ASCII control chars are made from letters (both cases), |
2001 | as well as the non-letters within 0100...0137. */ | |
2002 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2003 | return (c & (037 | ~0177)); | |
2004 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2005 | return (c & (037 | ~0177)); | |
078e7b4a | 2006 | else |
7bd279cd | 2007 | return c | ctrl_modifier; |
078e7b4a JB |
2008 | |
2009 | case '0': | |
2010 | case '1': | |
2011 | case '2': | |
2012 | case '3': | |
2013 | case '4': | |
2014 | case '5': | |
2015 | case '6': | |
2016 | case '7': | |
2017 | /* An octal escape, as in ANSI C. */ | |
2018 | { | |
2019 | register int i = c - '0'; | |
2020 | register int count = 0; | |
2021 | while (++count < 3) | |
2022 | { | |
2023 | if ((c = READCHAR) >= '0' && c <= '7') | |
2024 | { | |
2025 | i *= 8; | |
2026 | i += c - '0'; | |
2027 | } | |
2028 | else | |
2029 | { | |
2030 | UNREAD (c); | |
2031 | break; | |
2032 | } | |
2033 | } | |
177c0ea7 | 2034 | |
8f924df7 | 2035 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2036 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2037 | return i; |
2038 | } | |
2039 | ||
2040 | case 'x': | |
2041 | /* A hex escape, as in ANSI C. */ | |
2042 | { | |
2043 | int i = 0; | |
1571601b | 2044 | int count = 0; |
078e7b4a JB |
2045 | while (1) |
2046 | { | |
2047 | c = READCHAR; | |
2048 | if (c >= '0' && c <= '9') | |
2049 | { | |
2050 | i *= 16; | |
2051 | i += c - '0'; | |
2052 | } | |
2053 | else if ((c >= 'a' && c <= 'f') | |
2054 | || (c >= 'A' && c <= 'F')) | |
2055 | { | |
2056 | i *= 16; | |
2057 | if (c >= 'a' && c <= 'f') | |
2058 | i += c - 'a' + 10; | |
2059 | else | |
2060 | i += c - 'A' + 10; | |
2061 | } | |
2062 | else | |
2063 | { | |
2064 | UNREAD (c); | |
2065 | break; | |
2066 | } | |
1571601b | 2067 | count++; |
078e7b4a | 2068 | } |
f6f79b37 | 2069 | |
1571601b | 2070 | if (count < 3 && i >= 0x80) |
8792be66 | 2071 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2072 | return i; |
2073 | } | |
2074 | ||
71b169b8 EZ |
2075 | case 'U': |
2076 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2077 | unicode_hex_count = 8; | |
2078 | case 'u': | |
2079 | ||
9735b9ce | 2080 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2081 | not arbitrarily in the source code, as in some other languages. */ |
2082 | { | |
a808f22d | 2083 | unsigned int i = 0; |
71b169b8 | 2084 | int count = 0; |
71b169b8 EZ |
2085 | |
2086 | while (++count <= unicode_hex_count) | |
2087 | { | |
2088 | c = READCHAR; | |
a3ac22e4 | 2089 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2090 | want. */ |
2091 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2092 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2093 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2094 | else | |
2095 | { | |
2096 | error ("Non-hex digit used for Unicode escape"); | |
2097 | break; | |
2098 | } | |
2099 | } | |
a808f22d KH |
2100 | if (i > 0x10FFFF) |
2101 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2102 | return i; |
71b169b8 EZ |
2103 | } |
2104 | ||
078e7b4a JB |
2105 | default: |
2106 | return c; | |
2107 | } | |
2108 | } | |
2109 | ||
bf5d1a17 GM |
2110 | /* Read an integer in radix RADIX using READCHARFUN to read |
2111 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2112 | read error is signaled . Value is the integer read. Signals an | |
2113 | error if encountering invalid read syntax or if RADIX is out of | |
2114 | range. */ | |
2115 | ||
2116 | static Lisp_Object | |
971de7fb | 2117 | read_integer (Lisp_Object readcharfun, int radix) |
bf5d1a17 | 2118 | { |
5e37dc22 | 2119 | int ndigits = 0, invalid_p, c, sign = 0; |
155a6764 SM |
2120 | /* We use a floating point number because */ |
2121 | double number = 0; | |
bf5d1a17 GM |
2122 | |
2123 | if (radix < 2 || radix > 36) | |
2124 | invalid_p = 1; | |
2125 | else | |
2126 | { | |
2127 | number = ndigits = invalid_p = 0; | |
2128 | sign = 1; | |
2129 | ||
2130 | c = READCHAR; | |
2131 | if (c == '-') | |
2132 | { | |
2133 | c = READCHAR; | |
2134 | sign = -1; | |
2135 | } | |
2136 | else if (c == '+') | |
2137 | c = READCHAR; | |
177c0ea7 | 2138 | |
bf5d1a17 GM |
2139 | while (c >= 0) |
2140 | { | |
2141 | int digit; | |
177c0ea7 | 2142 | |
bf5d1a17 GM |
2143 | if (c >= '0' && c <= '9') |
2144 | digit = c - '0'; | |
2145 | else if (c >= 'a' && c <= 'z') | |
2146 | digit = c - 'a' + 10; | |
2147 | else if (c >= 'A' && c <= 'Z') | |
2148 | digit = c - 'A' + 10; | |
2149 | else | |
b632fa48 GM |
2150 | { |
2151 | UNREAD (c); | |
2152 | break; | |
2153 | } | |
bf5d1a17 GM |
2154 | |
2155 | if (digit < 0 || digit >= radix) | |
2156 | invalid_p = 1; | |
2157 | ||
2158 | number = radix * number + digit; | |
2159 | ++ndigits; | |
2160 | c = READCHAR; | |
2161 | } | |
2162 | } | |
2163 | ||
2164 | if (ndigits == 0 || invalid_p) | |
2165 | { | |
2166 | char buf[50]; | |
2167 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2168 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2169 | } |
2170 | ||
155a6764 | 2171 | return make_fixnum_or_float (sign * number); |
bf5d1a17 GM |
2172 | } |
2173 | ||
2174 | ||
6428369f KH |
2175 | /* If the next token is ')' or ']' or '.', we store that character |
2176 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2177 | zero in *PCH and we read and return one lisp object. |
2178 | ||
2179 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2180 | ||
078e7b4a | 2181 | static Lisp_Object |
971de7fb | 2182 | read1 (register Lisp_Object readcharfun, int *pch, int first_in_list) |
078e7b4a JB |
2183 | { |
2184 | register int c; | |
4ad679f9 | 2185 | int uninterned_symbol = 0; |
1202434b | 2186 | int multibyte; |
4ad679f9 | 2187 | |
6428369f | 2188 | *pch = 0; |
8792be66 | 2189 | load_each_byte = 0; |
078e7b4a JB |
2190 | |
2191 | retry: | |
2192 | ||
1202434b | 2193 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2194 | if (c < 0) |
2195 | end_of_file_error (); | |
078e7b4a JB |
2196 | |
2197 | switch (c) | |
2198 | { | |
2199 | case '(': | |
2200 | return read_list (0, readcharfun); | |
2201 | ||
2202 | case '[': | |
c15cfd1f | 2203 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2204 | |
2205 | case ')': | |
2206 | case ']': | |
078e7b4a | 2207 | { |
6428369f KH |
2208 | *pch = c; |
2209 | return Qnil; | |
078e7b4a JB |
2210 | } |
2211 | ||
2212 | case '#': | |
200f684e | 2213 | c = READCHAR; |
f19a0f5b TZ |
2214 | if (c == 's') |
2215 | { | |
2216 | c = READCHAR; | |
2217 | if (c == '(') | |
2218 | { | |
2219 | /* Accept extended format for hashtables (extensible to | |
2220 | other types), e.g. | |
2221 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ | |
2222 | Lisp_Object tmp = read_list (0, readcharfun); | |
2223 | Lisp_Object head = CAR_SAFE (tmp); | |
2224 | Lisp_Object data = Qnil; | |
2225 | Lisp_Object val = Qnil; | |
2226 | /* The size is 2 * number of allowed keywords to | |
2227 | make-hash-table. */ | |
9735b9ce | 2228 | Lisp_Object params[10]; |
f19a0f5b TZ |
2229 | Lisp_Object ht; |
2230 | Lisp_Object key = Qnil; | |
2231 | int param_count = 0; | |
9735b9ce | 2232 | |
f19a0f5b TZ |
2233 | if (!EQ (head, Qhash_table)) |
2234 | error ("Invalid extended read marker at head of #s list " | |
2235 | "(only hash-table allowed)"); | |
9735b9ce | 2236 | |
f19a0f5b TZ |
2237 | tmp = CDR_SAFE (tmp); |
2238 | ||
2239 | /* This is repetitive but fast and simple. */ | |
2240 | params[param_count] = QCsize; | |
2241 | params[param_count+1] = Fplist_get (tmp, Qsize); | |
5721b4ed AS |
2242 | if (!NILP (params[param_count + 1])) |
2243 | param_count += 2; | |
f19a0f5b TZ |
2244 | |
2245 | params[param_count] = QCtest; | |
2246 | params[param_count+1] = Fplist_get (tmp, Qtest); | |
5721b4ed AS |
2247 | if (!NILP (params[param_count + 1])) |
2248 | param_count += 2; | |
f19a0f5b TZ |
2249 | |
2250 | params[param_count] = QCweakness; | |
2251 | params[param_count+1] = Fplist_get (tmp, Qweakness); | |
5721b4ed AS |
2252 | if (!NILP (params[param_count + 1])) |
2253 | param_count += 2; | |
f19a0f5b TZ |
2254 | |
2255 | params[param_count] = QCrehash_size; | |
2256 | params[param_count+1] = Fplist_get (tmp, Qrehash_size); | |
5721b4ed AS |
2257 | if (!NILP (params[param_count + 1])) |
2258 | param_count += 2; | |
f19a0f5b TZ |
2259 | |
2260 | params[param_count] = QCrehash_threshold; | |
2261 | params[param_count+1] = Fplist_get (tmp, Qrehash_threshold); | |
5721b4ed AS |
2262 | if (!NILP (params[param_count + 1])) |
2263 | param_count += 2; | |
f19a0f5b TZ |
2264 | |
2265 | /* This is the hashtable data. */ | |
2266 | data = Fplist_get (tmp, Qdata); | |
2267 | ||
2268 | /* Now use params to make a new hashtable and fill it. */ | |
2269 | ht = Fmake_hash_table (param_count, params); | |
9735b9ce | 2270 | |
f19a0f5b TZ |
2271 | while (CONSP (data)) |
2272 | { | |
2273 | key = XCAR (data); | |
2274 | data = XCDR (data); | |
2275 | if (!CONSP (data)) | |
2276 | error ("Odd number of elements in hashtable data"); | |
2277 | val = XCAR (data); | |
2278 | data = XCDR (data); | |
2279 | Fputhash (key, val, ht); | |
2280 | } | |
9735b9ce | 2281 | |
f19a0f5b TZ |
2282 | return ht; |
2283 | } | |
5721b4ed AS |
2284 | UNREAD (c); |
2285 | invalid_syntax ("#", 1); | |
f19a0f5b | 2286 | } |
c2390933 RS |
2287 | if (c == '^') |
2288 | { | |
2289 | c = READCHAR; | |
2290 | if (c == '[') | |
2291 | { | |
2292 | Lisp_Object tmp; | |
c15cfd1f | 2293 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2294 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2295 | error ("Invalid size char-table"); |
985773c9 | 2296 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2297 | return tmp; |
2298 | } | |
3701b5de KH |
2299 | else if (c == '^') |
2300 | { | |
2301 | c = READCHAR; | |
2302 | if (c == '[') | |
2303 | { | |
2304 | Lisp_Object tmp; | |
1571601b | 2305 | int depth, size; |
8f924df7 | 2306 | |
c15cfd1f | 2307 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2308 | if (!INTEGERP (AREF (tmp, 0))) |
2309 | error ("Invalid depth in char-table"); | |
2310 | depth = XINT (AREF (tmp, 0)); | |
2311 | if (depth < 1 || depth > 3) | |
2312 | error ("Invalid depth in char-table"); | |
41482d36 | 2313 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2314 | if (chartab_size [depth] != size) |
3701b5de | 2315 | error ("Invalid size char-table"); |
985773c9 | 2316 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2317 | return tmp; |
2318 | } | |
336d4a9c | 2319 | invalid_syntax ("#^^", 3); |
3701b5de | 2320 | } |
336d4a9c | 2321 | invalid_syntax ("#^", 2); |
c2390933 RS |
2322 | } |
2323 | if (c == '&') | |
2324 | { | |
2325 | Lisp_Object length; | |
2326 | length = read1 (readcharfun, pch, first_in_list); | |
2327 | c = READCHAR; | |
2328 | if (c == '"') | |
2329 | { | |
2330 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2331 | int size_in_chars |
2332 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2333 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2334 | |
2335 | UNREAD (c); | |
2336 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2337 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2338 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2339 | /* We used to print 1 char too many |
2340 | when the number of bits was a multiple of 8. | |
2341 | Accept such input in case it came from an old | |
2342 | version. */ | |
2343 | && ! (XFASTINT (length) | |
327719ee | 2344 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2345 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2346 | |
c2390933 | 2347 | val = Fmake_bool_vector (length, Qnil); |
72af86bd | 2348 | memcpy (XBOOL_VECTOR (val)->data, SDATA (tmp), size_in_chars); |
67d3b149 | 2349 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2350 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2351 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2352 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2353 | return val; |
2354 | } | |
336d4a9c | 2355 | invalid_syntax ("#&...", 5); |
c2390933 | 2356 | } |
200f684e RS |
2357 | if (c == '[') |
2358 | { | |
2359 | /* Accept compiled functions at read-time so that we don't have to | |
2360 | build them using function calls. */ | |
748ef62f | 2361 | Lisp_Object tmp; |
c15cfd1f | 2362 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2363 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2364 | XVECTOR (tmp)->contents); | |
200f684e | 2365 | } |
748ef62f RS |
2366 | if (c == '(') |
2367 | { | |
2368 | Lisp_Object tmp; | |
2369 | struct gcpro gcpro1; | |
e28552a4 | 2370 | int ch; |
748ef62f RS |
2371 | |
2372 | /* Read the string itself. */ | |
17634846 | 2373 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2374 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2375 | invalid_syntax ("#", 1); |
748ef62f RS |
2376 | GCPRO1 (tmp); |
2377 | /* Read the intervals and their properties. */ | |
2378 | while (1) | |
2379 | { | |
2380 | Lisp_Object beg, end, plist; | |
2381 | ||
17634846 | 2382 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2383 | end = plist = Qnil; |
6428369f KH |
2384 | if (ch == ')') |
2385 | break; | |
2386 | if (ch == 0) | |
17634846 | 2387 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2388 | if (ch == 0) |
17634846 | 2389 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2390 | if (ch) |
336d4a9c | 2391 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2392 | Fset_text_properties (beg, end, plist, tmp); |
2393 | } | |
2394 | UNGCPRO; | |
2395 | return tmp; | |
2396 | } | |
177c0ea7 | 2397 | |
20ea2964 RS |
2398 | /* #@NUMBER is used to skip NUMBER following characters. |
2399 | That's used in .elc files to skip over doc strings | |
2400 | and function definitions. */ | |
2401 | if (c == '@') | |
2402 | { | |
2403 | int i, nskip = 0; | |
2404 | ||
8792be66 | 2405 | load_each_byte = 1; |
20ea2964 RS |
2406 | /* Read a decimal integer. */ |
2407 | while ((c = READCHAR) >= 0 | |
2408 | && c >= '0' && c <= '9') | |
2409 | { | |
2410 | nskip *= 10; | |
2411 | nskip += c - '0'; | |
2412 | } | |
2413 | if (c >= 0) | |
2414 | UNREAD (c); | |
177c0ea7 | 2415 | |
8792be66 KH |
2416 | if (load_force_doc_strings |
2417 | && (EQ (readcharfun, Qget_file_char) | |
2418 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2419 | { |
2420 | /* If we are supposed to force doc strings into core right now, | |
2421 | record the last string that we skipped, | |
2422 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2423 | |
2424 | /* But first exchange saved_doc_string | |
2425 | with prev_saved_doc_string, so we save two strings. */ | |
2426 | { | |
2427 | char *temp = saved_doc_string; | |
2428 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2429 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2430 | int temp_len = saved_doc_string_length; |
2431 | ||
2432 | saved_doc_string = prev_saved_doc_string; | |
2433 | saved_doc_string_size = prev_saved_doc_string_size; | |
2434 | saved_doc_string_position = prev_saved_doc_string_position; | |
2435 | saved_doc_string_length = prev_saved_doc_string_length; | |
2436 | ||
2437 | prev_saved_doc_string = temp; | |
2438 | prev_saved_doc_string_size = temp_size; | |
2439 | prev_saved_doc_string_position = temp_pos; | |
2440 | prev_saved_doc_string_length = temp_len; | |
2441 | } | |
2442 | ||
b2a30870 RS |
2443 | if (saved_doc_string_size == 0) |
2444 | { | |
2445 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2446 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2447 | } |
2448 | if (nskip > saved_doc_string_size) | |
2449 | { | |
2450 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2451 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2452 | saved_doc_string_size); | |
b2a30870 RS |
2453 | } |
2454 | ||
68c45bf0 | 2455 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2456 | |
2457 | /* Copy that many characters into saved_doc_string. */ | |
2458 | for (i = 0; i < nskip && c >= 0; i++) | |
2459 | saved_doc_string[i] = c = READCHAR; | |
2460 | ||
2461 | saved_doc_string_length = i; | |
2462 | } | |
2463 | else | |
b2a30870 RS |
2464 | { |
2465 | /* Skip that many characters. */ | |
2466 | for (i = 0; i < nskip && c >= 0; i++) | |
2467 | c = READCHAR; | |
2468 | } | |
d49f0c1a | 2469 | |
8792be66 | 2470 | load_each_byte = 0; |
20ea2964 RS |
2471 | goto retry; |
2472 | } | |
e2518d02 RS |
2473 | if (c == '!') |
2474 | { | |
2475 | /* #! appears at the beginning of an executable file. | |
2476 | Skip the first line. */ | |
225c7a07 | 2477 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2478 | c = READCHAR; |
2479 | goto retry; | |
2480 | } | |
20ea2964 RS |
2481 | if (c == '$') |
2482 | return Vload_file_name; | |
2b6cae0c RS |
2483 | if (c == '\'') |
2484 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2485 | /* #:foo is the uninterned symbol named foo. */ |
2486 | if (c == ':') | |
2487 | { | |
2488 | uninterned_symbol = 1; | |
2489 | c = READCHAR; | |
2490 | goto default_label; | |
2491 | } | |
2492 | /* Reader forms that can reuse previously read objects. */ | |
2493 | if (c >= '0' && c <= '9') | |
2494 | { | |
2495 | int n = 0; | |
2496 | Lisp_Object tem; | |
2b6cae0c | 2497 | |
4ad679f9 EN |
2498 | /* Read a non-negative integer. */ |
2499 | while (c >= '0' && c <= '9') | |
2500 | { | |
2501 | n *= 10; | |
2502 | n += c - '0'; | |
2503 | c = READCHAR; | |
2504 | } | |
2505 | /* #n=object returns object, but associates it with n for #n#. */ | |
91f68422 | 2506 | if (c == '=' && !NILP (Vread_circle)) |
4ad679f9 | 2507 | { |
9e062b6c RS |
2508 | /* Make a placeholder for #n# to use temporarily */ |
2509 | Lisp_Object placeholder; | |
2510 | Lisp_Object cell; | |
2511 | ||
9735b9ce | 2512 | placeholder = Fcons (Qnil, Qnil); |
9e062b6c RS |
2513 | cell = Fcons (make_number (n), placeholder); |
2514 | read_objects = Fcons (cell, read_objects); | |
2515 | ||
2516 | /* Read the object itself. */ | |
4ad679f9 | 2517 | tem = read0 (readcharfun); |
9e062b6c RS |
2518 | |
2519 | /* Now put it everywhere the placeholder was... */ | |
2520 | substitute_object_in_subtree (tem, placeholder); | |
2521 | ||
2522 | /* ...and #n# will use the real value from now on. */ | |
2523 | Fsetcdr (cell, tem); | |
177c0ea7 | 2524 | |
4ad679f9 EN |
2525 | return tem; |
2526 | } | |
2527 | /* #n# returns a previously read object. */ | |
91f68422 | 2528 | if (c == '#' && !NILP (Vread_circle)) |
4ad679f9 EN |
2529 | { |
2530 | tem = Fassq (make_number (n), read_objects); | |
2531 | if (CONSP (tem)) | |
2532 | return XCDR (tem); | |
2533 | /* Fall through to error message. */ | |
2534 | } | |
bf5d1a17 GM |
2535 | else if (c == 'r' || c == 'R') |
2536 | return read_integer (readcharfun, n); | |
177c0ea7 | 2537 | |
4ad679f9 EN |
2538 | /* Fall through to error message. */ |
2539 | } | |
bf5d1a17 GM |
2540 | else if (c == 'x' || c == 'X') |
2541 | return read_integer (readcharfun, 16); | |
2542 | else if (c == 'o' || c == 'O') | |
2543 | return read_integer (readcharfun, 8); | |
2544 | else if (c == 'b' || c == 'B') | |
2545 | return read_integer (readcharfun, 2); | |
20ea2964 | 2546 | |
200f684e | 2547 | UNREAD (c); |
336d4a9c | 2548 | invalid_syntax ("#", 1); |
078e7b4a JB |
2549 | |
2550 | case ';': | |
2551 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2552 | goto retry; | |
2553 | ||
2554 | case '\'': | |
2555 | { | |
2556 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2557 | } | |
2558 | ||
17634846 | 2559 | case '`': |
9a39b306 TO |
2560 | { |
2561 | int next_char = READCHAR; | |
2562 | UNREAD (next_char); | |
2563 | /* Transition from old-style to new-style: | |
2564 | If we see "(`" it used to mean old-style, which usually works | |
2565 | fine because ` should almost never appear in such a position | |
2566 | for new-style. But occasionally we need "(`" to mean new | |
2567 | style, so we try to distinguish the two by the fact that we | |
2568 | can either write "( `foo" or "(` foo", where the first | |
2569 | intends to use new-style whereas the second intends to use | |
2570 | old-style. For Emacs-25, we should completely remove this | |
2571 | first_in_list exception (old-style can still be obtained via | |
2572 | "(\`" anyway). */ | |
bba3e508 | 2573 | if (!new_backquote_flag && first_in_list && next_char == ' ') |
9a39b306 TO |
2574 | { |
2575 | Vold_style_backquotes = Qt; | |
2576 | goto default_label; | |
2577 | } | |
2578 | else | |
2579 | { | |
2580 | Lisp_Object value; | |
17634846 | 2581 | |
9a39b306 TO |
2582 | new_backquote_flag++; |
2583 | value = read0 (readcharfun); | |
2584 | new_backquote_flag--; | |
17634846 | 2585 | |
9a39b306 TO |
2586 | return Fcons (Qbackquote, Fcons (value, Qnil)); |
2587 | } | |
2588 | } | |
17634846 | 2589 | case ',': |
bba3e508 SM |
2590 | { |
2591 | int next_char = READCHAR; | |
2592 | UNREAD (next_char); | |
2593 | /* Transition from old-style to new-style: | |
2594 | It used to be impossible to have a new-style , other than within | |
2595 | a new-style `. This is sufficient when ` and , are used in the | |
2596 | normal way, but ` and , can also appear in args to macros that | |
2597 | will not interpret them in the usual way, in which case , may be | |
2598 | used without any ` anywhere near. | |
2599 | So we now use the same heuristic as for backquote: old-style | |
2600 | unquotes are only recognized when first on a list, and when | |
2601 | followed by a space. | |
2602 | Because it's more difficult to peak 2 chars ahead, a new-style | |
2603 | ,@ can still not be used outside of a `, unless it's in the middle | |
2604 | of a list. */ | |
2605 | if (new_backquote_flag | |
2606 | || !first_in_list | |
2607 | || (next_char != ' ' && next_char != '@')) | |
2608 | { | |
2609 | Lisp_Object comma_type = Qnil; | |
2610 | Lisp_Object value; | |
2611 | int ch = READCHAR; | |
17634846 | 2612 | |
bba3e508 SM |
2613 | if (ch == '@') |
2614 | comma_type = Qcomma_at; | |
2615 | else if (ch == '.') | |
2616 | comma_type = Qcomma_dot; | |
2617 | else | |
2618 | { | |
2619 | if (ch >= 0) UNREAD (ch); | |
2620 | comma_type = Qcomma; | |
2621 | } | |
17634846 | 2622 | |
bba3e508 SM |
2623 | value = read0 (readcharfun); |
2624 | return Fcons (comma_type, Fcons (value, Qnil)); | |
2625 | } | |
2626 | else | |
2627 | { | |
2628 | Vold_style_backquotes = Qt; | |
2629 | goto default_label; | |
2630 | } | |
2631 | } | |
078e7b4a JB |
2632 | case '?': |
2633 | { | |
8792be66 | 2634 | int modifiers; |
df9c2be7 KS |
2635 | int next_char; |
2636 | int ok; | |
f6f79b37 | 2637 | |
078e7b4a | 2638 | c = READCHAR; |
9c97398c GM |
2639 | if (c < 0) |
2640 | end_of_file_error (); | |
078e7b4a | 2641 | |
b9284371 KS |
2642 | /* Accept `single space' syntax like (list ? x) where the |
2643 | whitespace character is SPC or TAB. | |
2644 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2645 | as there are well-established escape sequences for these. */ | |
2646 | if (c == ' ' || c == '\t') | |
2647 | return make_number (c); | |
2648 | ||
078e7b4a | 2649 | if (c == '\\') |
8792be66 KH |
2650 | c = read_escape (readcharfun, 0); |
2651 | modifiers = c & CHAR_MODIFIER_MASK; | |
2652 | c &= ~CHAR_MODIFIER_MASK; | |
2653 | if (CHAR_BYTE8_P (c)) | |
2654 | c = CHAR_TO_BYTE8 (c); | |
2655 | c |= modifiers; | |
078e7b4a | 2656 | |
df9c2be7 | 2657 | next_char = READCHAR; |
bba3e508 SM |
2658 | ok = (next_char <= 040 |
2659 | || (next_char < 0200 | |
2660 | && (strchr ("\"';()[]#?`,.", next_char)))); | |
df9c2be7 | 2661 | UNREAD (next_char); |
336d4a9c KS |
2662 | if (ok) |
2663 | return make_number (c); | |
37cd4238 | 2664 | |
336d4a9c | 2665 | invalid_syntax ("?", 1); |
078e7b4a JB |
2666 | } |
2667 | ||
00a9a935 | 2668 | case '"': |
078e7b4a | 2669 | { |
a742d646 GM |
2670 | char *p = read_buffer; |
2671 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2672 | register int c; |
1571601b KH |
2673 | /* Nonzero if we saw an escape sequence specifying |
2674 | a multibyte character. */ | |
e7fc914b | 2675 | int force_multibyte = 0; |
1571601b | 2676 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2677 | a single-byte character. */ |
2678 | int force_singlebyte = 0; | |
078e7b4a | 2679 | int cancel = 0; |
5150eeec | 2680 | int nchars = 0; |
078e7b4a JB |
2681 | |
2682 | while ((c = READCHAR) >= 0 | |
2683 | && c != '\"') | |
2684 | { | |
449fea39 | 2685 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2686 | { |
5d65df0d GM |
2687 | int offset = p - read_buffer; |
2688 | read_buffer = (char *) xrealloc (read_buffer, | |
2689 | read_buffer_size *= 2); | |
2690 | p = read_buffer + offset; | |
078e7b4a JB |
2691 | end = read_buffer + read_buffer_size; |
2692 | } | |
bed23cb2 | 2693 | |
078e7b4a | 2694 | if (c == '\\') |
03e88613 | 2695 | { |
1571601b | 2696 | int modifiers; |
f6f79b37 | 2697 | |
8792be66 | 2698 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2699 | |
2700 | /* C is -1 if \ newline has just been seen */ | |
2701 | if (c == -1) | |
03e88613 | 2702 | { |
bed23cb2 RS |
2703 | if (p == read_buffer) |
2704 | cancel = 1; | |
03e88613 RS |
2705 | continue; |
2706 | } | |
bed23cb2 | 2707 | |
1571601b KH |
2708 | modifiers = c & CHAR_MODIFIER_MASK; |
2709 | c = c & ~CHAR_MODIFIER_MASK; | |
2710 | ||
8792be66 | 2711 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2712 | force_singlebyte = 1; |
8792be66 | 2713 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2714 | force_multibyte = 1; |
8792be66 | 2715 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2716 | { |
2717 | /* Allow `\C- ' and `\C-?'. */ | |
2718 | if (modifiers == CHAR_CTL) | |
2719 | { | |
2720 | if (c == ' ') | |
2721 | c = 0, modifiers = 0; | |
2722 | else if (c == '?') | |
2723 | c = 127, modifiers = 0; | |
2724 | } | |
2725 | if (modifiers & CHAR_SHIFT) | |
2726 | { | |
2727 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2728 | if (c >= 'A' && c <= 'Z') | |
2729 | modifiers &= ~CHAR_SHIFT; | |
2730 | else if (c >= 'a' && c <= 'z') | |
2731 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2732 | } | |
2733 | ||
2734 | if (modifiers & CHAR_META) | |
2735 | { | |
2736 | /* Move the meta bit to the right place for a | |
2737 | string. */ | |
2738 | modifiers &= ~CHAR_META; | |
2739 | c = BYTE8_TO_CHAR (c | 0x80); | |
2740 | force_singlebyte = 1; | |
2741 | } | |
2742 | } | |
5150eeec | 2743 | |
1571601b KH |
2744 | /* Any modifiers remaining are invalid. */ |
2745 | if (modifiers) | |
2746 | error ("Invalid modifier in string"); | |
2747 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2748 | } |
8792be66 | 2749 | else |
5150eeec | 2750 | { |
1571601b | 2751 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2752 | if (CHAR_BYTE8_P (c)) |
2753 | force_singlebyte = 1; | |
2754 | else if (! ASCII_CHAR_P (c)) | |
2755 | force_multibyte = 1; | |
f943104a | 2756 | } |
5150eeec | 2757 | nchars++; |
078e7b4a | 2758 | } |
5150eeec | 2759 | |
6f7f43d5 | 2760 | if (c < 0) |
9c97398c | 2761 | end_of_file_error (); |
078e7b4a JB |
2762 | |
2763 | /* If purifying, and string starts with \ newline, | |
2764 | return zero instead. This is for doc strings | |
08564963 | 2765 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2766 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2767 | return make_number (0); |
2768 | ||
1571601b KH |
2769 | if (force_multibyte) |
2770 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2771 | ; |
1571601b | 2772 | else if (force_singlebyte) |
a742d646 | 2773 | { |
4a25e32a PE |
2774 | nchars = str_as_unibyte ((unsigned char *) read_buffer, |
2775 | p - read_buffer); | |
1571601b | 2776 | p = read_buffer + nchars; |
a742d646 | 2777 | } |
e28552a4 | 2778 | else |
1571601b | 2779 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2780 | ; |
e7fc914b | 2781 | |
abb13b09 CW |
2782 | /* We want readchar_count to be the number of characters, not |
2783 | bytes. Hence we adjust for multibyte characters in the | |
2784 | string. ... But it doesn't seem to be necessary, because | |
2785 | READCHAR *does* read multibyte characters from buffers. */ | |
2786 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2787 | if (read_pure) |
491f16a2 | 2788 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2789 | (force_multibyte |
2790 | || (p - read_buffer != nchars))); | |
491f16a2 | 2791 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2792 | (force_multibyte |
2793 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2794 | } |
2795 | ||
109d300c JB |
2796 | case '.': |
2797 | { | |
109d300c JB |
2798 | int next_char = READCHAR; |
2799 | UNREAD (next_char); | |
2800 | ||
035eec48 | 2801 | if (next_char <= 040 |
e613ea97 | 2802 | || (next_char < 0200 |
bba3e508 | 2803 | && (strchr ("\"';([#?`,", next_char)))) |
109d300c | 2804 | { |
6428369f KH |
2805 | *pch = c; |
2806 | return Qnil; | |
109d300c JB |
2807 | } |
2808 | ||
2809 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2810 | below will now loop at least once, assuring that we will not | |
2811 | try to UNREAD two characters in a row. */ | |
2812 | } | |
078e7b4a | 2813 | default: |
17634846 | 2814 | default_label: |
88852d45 | 2815 | if (c <= 040) goto retry; |
adef3de7 RS |
2816 | if (c == 0x8a0) /* NBSP */ |
2817 | goto retry; | |
078e7b4a | 2818 | { |
38404229 | 2819 | char *p = read_buffer; |
481c6336 | 2820 | int quoted = 0; |
078e7b4a JB |
2821 | |
2822 | { | |
38404229 | 2823 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2824 | |
ef1b0ba7 | 2825 | do |
078e7b4a | 2826 | { |
449fea39 | 2827 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2828 | { |
5d65df0d GM |
2829 | int offset = p - read_buffer; |
2830 | read_buffer = (char *) xrealloc (read_buffer, | |
2831 | read_buffer_size *= 2); | |
2832 | p = read_buffer + offset; | |
078e7b4a JB |
2833 | end = read_buffer + read_buffer_size; |
2834 | } | |
177c0ea7 | 2835 | |
078e7b4a | 2836 | if (c == '\\') |
481c6336 RS |
2837 | { |
2838 | c = READCHAR; | |
4ab11c09 GM |
2839 | if (c == -1) |
2840 | end_of_file_error (); | |
481c6336 RS |
2841 | quoted = 1; |
2842 | } | |
6f7f43d5 | 2843 | |
1202434b | 2844 | if (multibyte) |
4a25e32a | 2845 | p += CHAR_STRING (c, (unsigned char *) p); |
1202434b KH |
2846 | else |
2847 | *p++ = c; | |
078e7b4a | 2848 | c = READCHAR; |
ef1b0ba7 SM |
2849 | } while (c > 040 |
2850 | && c != 0x8a0 /* NBSP */ | |
2851 | && (c >= 0200 | |
2852 | || !(strchr ("\"';()[]#`,", c)))); | |
078e7b4a JB |
2853 | |
2854 | if (p == end) | |
2855 | { | |
5d65df0d GM |
2856 | int offset = p - read_buffer; |
2857 | read_buffer = (char *) xrealloc (read_buffer, | |
2858 | read_buffer_size *= 2); | |
2859 | p = read_buffer + offset; | |
2860 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2861 | } |
2862 | *p = 0; | |
2863 | if (c >= 0) | |
2864 | UNREAD (c); | |
2865 | } | |
2866 | ||
4ad679f9 | 2867 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2868 | { |
2869 | register char *p1; | |
481c6336 RS |
2870 | p1 = read_buffer; |
2871 | if (*p1 == '+' || *p1 == '-') p1++; | |
2872 | /* Is it an integer? */ | |
2873 | if (p1 != p) | |
2874 | { | |
2875 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2876 | /* Integers can have trailing decimal points. */ |
2877 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2878 | if (p1 == p) |
2879 | /* It is an integer. */ | |
2880 | { | |
481c6336 RS |
2881 | if (p1[-1] == '.') |
2882 | p1[-1] = '\0'; | |
155a6764 SM |
2883 | { |
2884 | /* EMACS_INT n = atol (read_buffer); */ | |
2885 | char *endptr = NULL; | |
2886 | EMACS_INT n = (errno = 0, | |
2887 | strtol (read_buffer, &endptr, 10)); | |
2888 | if (errno == ERANGE && endptr) | |
2889 | { | |
2890 | Lisp_Object args | |
2891 | = Fcons (make_string (read_buffer, | |
2892 | endptr - read_buffer), | |
2893 | Qnil); | |
2894 | xsignal (Qoverflow_error, args); | |
2895 | } | |
2896 | return make_fixnum_or_float (n); | |
2897 | } | |
481c6336 RS |
2898 | } |
2899 | } | |
be95bee9 | 2900 | if (isfloat_string (read_buffer, 0)) |
eb659c41 | 2901 | { |
a8972052 PE |
2902 | /* Compute NaN and infinities using 0.0 in a variable, |
2903 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2904 | than we are. */ |
3c329963 | 2905 | double zero = 0.0; |
a8972052 PE |
2906 | |
2907 | double value; | |
2908 | ||
2909 | /* Negate the value ourselves. This treats 0, NaNs, | |
2910 | and infinity properly on IEEE floating point hosts, | |
2911 | and works around a common bug where atof ("-0.0") | |
2912 | drops the sign. */ | |
2913 | int negative = read_buffer[0] == '-'; | |
2914 | ||
2915 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2916 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2917 | switch (p[-1]) |
eb659c41 | 2918 | { |
a8972052 PE |
2919 | case 'F': |
2920 | value = 1.0 / zero; | |
2921 | break; | |
2922 | case 'N': | |
2923 | value = zero / zero; | |
7690cbb0 RS |
2924 | |
2925 | /* If that made a "negative" NaN, negate it. */ | |
2926 | ||
2927 | { | |
2928 | int i; | |
2929 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2930 | ||
2931 | u_data.d = value; | |
2932 | u_minus_zero.d = - 0.0; | |
2933 | for (i = 0; i < sizeof (double); i++) | |
2934 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2935 | { | |
2936 | value = - value; | |
2937 | break; | |
2938 | } | |
2939 | } | |
2940 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2941 | break; |
2942 | default: | |
2943 | value = atof (read_buffer + negative); | |
2944 | break; | |
eb659c41 | 2945 | } |
a8972052 PE |
2946 | |
2947 | return make_float (negative ? - value : value); | |
eb659c41 | 2948 | } |
481c6336 | 2949 | } |
abb13b09 | 2950 | { |
e93abe3d KH |
2951 | Lisp_Object name, result; |
2952 | EMACS_INT nbytes = p - read_buffer; | |
2953 | EMACS_INT nchars | |
4a25e32a PE |
2954 | = (multibyte |
2955 | ? multibyte_chars_in_text ((unsigned char *) read_buffer, | |
2956 | nbytes) | |
e93abe3d KH |
2957 | : nbytes); |
2958 | ||
2959 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
2960 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
2961 | else | |
2962 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
2963 | result = (uninterned_symbol ? Fmake_symbol (name) | |
2964 | : Fintern (name, Qnil)); | |
1202434b | 2965 | |
abb13b09 CW |
2966 | if (EQ (Vread_with_symbol_positions, Qt) |
2967 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2968 | Vread_symbol_positions_list = |
abb13b09 CW |
2969 | /* Kind of a hack; this will probably fail if characters |
2970 | in the symbol name were escaped. Not really a big | |
2971 | deal, though. */ | |
f74db720 SM |
2972 | Fcons (Fcons (result, |
2973 | make_number (readchar_count | |
2974 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2975 | Vread_symbol_positions_list); |
2976 | return result; | |
2977 | } | |
078e7b4a JB |
2978 | } |
2979 | } | |
2980 | } | |
2981 | \f | |
9e062b6c RS |
2982 | |
2983 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2984 | static Lisp_Object seen_list; | |
2985 | ||
2986 | static void | |
971de7fb | 2987 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
2988 | { |
2989 | Lisp_Object check_object; | |
2990 | ||
2991 | /* We haven't seen any objects when we start. */ | |
2992 | seen_list = Qnil; | |
2993 | ||
2994 | /* Make all the substitutions. */ | |
2995 | check_object | |
2996 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2997 | |
9e062b6c RS |
2998 | /* Clear seen_list because we're done with it. */ |
2999 | seen_list = Qnil; | |
3000 | ||
3001 | /* The returned object here is expected to always eq the | |
3002 | original. */ | |
3003 | if (!EQ (check_object, object)) | |
3004 | error ("Unexpected mutation error in reader"); | |
3005 | } | |
3006 | ||
3007 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3008 | #define SUBSTITUTE(get_val, set_val) \ |
3009 | do { \ | |
3010 | Lisp_Object old_value = get_val; \ | |
3011 | Lisp_Object true_value \ | |
3012 | = substitute_object_recurse (object, placeholder, \ | |
3013 | old_value); \ | |
3014 | \ | |
3015 | if (!EQ (old_value, true_value)) \ | |
3016 | { \ | |
3017 | set_val; \ | |
3018 | } \ | |
3019 | } while (0) | |
9e062b6c RS |
3020 | |
3021 | static Lisp_Object | |
971de7fb | 3022 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c RS |
3023 | { |
3024 | /* If we find the placeholder, return the target object. */ | |
3025 | if (EQ (placeholder, subtree)) | |
3026 | return object; | |
3027 | ||
3028 | /* If we've been to this node before, don't explore it again. */ | |
3029 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3030 | return subtree; | |
3031 | ||
3032 | /* If this node can be the entry point to a cycle, remember that | |
3033 | we've seen it. It can only be such an entry point if it was made | |
3034 | by #n=, which means that we can find it as a value in | |
3035 | read_objects. */ | |
3036 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3037 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3038 | |
9e062b6c RS |
3039 | /* Recurse according to subtree's type. |
3040 | Every branch must return a Lisp_Object. */ | |
3041 | switch (XTYPE (subtree)) | |
3042 | { | |
3043 | case Lisp_Vectorlike: | |
3044 | { | |
7a3d90dc SM |
3045 | int i, length = 0; |
3046 | if (BOOL_VECTOR_P (subtree)) | |
3047 | return subtree; /* No sub-objects anyway. */ | |
3048 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3049 | || COMPILEDP (subtree)) | |
3050 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3051 | else if (VECTORP (subtree)) | |
3052 | length = ASIZE (subtree); | |
3053 | else | |
3054 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3055 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3056 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3057 | behavior. */ |
3058 | wrong_type_argument (Qsequencep, subtree); | |
3059 | ||
9e062b6c | 3060 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3061 | SUBSTITUTE (AREF (subtree, i), |
3062 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3063 | return subtree; |
3064 | } | |
3065 | ||
3066 | case Lisp_Cons: | |
3067 | { | |
7a3d90dc SM |
3068 | SUBSTITUTE (XCAR (subtree), |
3069 | XSETCAR (subtree, true_value)); | |
3070 | SUBSTITUTE (XCDR (subtree), | |
3071 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3072 | return subtree; |
3073 | } | |
3074 | ||
9e062b6c RS |
3075 | case Lisp_String: |
3076 | { | |
3077 | /* Check for text properties in each interval. | |
e61b9b87 | 3078 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3079 | |
d5db4077 | 3080 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3081 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3082 | |
0d74b006 SM |
3083 | traverse_intervals_noorder (root_interval, |
3084 | &substitute_in_interval, arg); | |
9e062b6c RS |
3085 | |
3086 | return subtree; | |
3087 | } | |
9e062b6c RS |
3088 | |
3089 | /* Other types don't recurse any further. */ | |
3090 | default: | |
3091 | return subtree; | |
3092 | } | |
3093 | } | |
3094 | ||
3095 | /* Helper function for substitute_object_recurse. */ | |
3096 | static void | |
971de7fb | 3097 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3098 | { |
3099 | Lisp_Object object = Fcar (arg); | |
3100 | Lisp_Object placeholder = Fcdr (arg); | |
3101 | ||
9735b9ce | 3102 | SUBSTITUTE (interval->plist, interval->plist = true_value); |
9e062b6c RS |
3103 | } |
3104 | ||
3105 | \f | |
078e7b4a JB |
3106 | #define LEAD_INT 1 |
3107 | #define DOT_CHAR 2 | |
3108 | #define TRAIL_INT 4 | |
3109 | #define E_CHAR 8 | |
3110 | #define EXP_INT 16 | |
3111 | ||
3112 | int | |
a8fe7202 | 3113 | isfloat_string (const char *cp, int ignore_trailing) |
078e7b4a | 3114 | { |
a8fe7202 AS |
3115 | int state; |
3116 | const char *start = cp; | |
d8578e58 | 3117 | |
078e7b4a JB |
3118 | state = 0; |
3119 | if (*cp == '+' || *cp == '-') | |
3120 | cp++; | |
3121 | ||
075027b1 | 3122 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3123 | { |
3124 | state |= LEAD_INT; | |
075027b1 RS |
3125 | while (*cp >= '0' && *cp <= '9') |
3126 | cp++; | |
078e7b4a JB |
3127 | } |
3128 | if (*cp == '.') | |
3129 | { | |
3130 | state |= DOT_CHAR; | |
3131 | cp++; | |
3132 | } | |
075027b1 | 3133 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3134 | { |
3135 | state |= TRAIL_INT; | |
075027b1 | 3136 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3137 | cp++; |
3138 | } | |
a35f88bf | 3139 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3140 | { |
3141 | state |= E_CHAR; | |
3142 | cp++; | |
e73997a1 RS |
3143 | if (*cp == '+' || *cp == '-') |
3144 | cp++; | |
078e7b4a | 3145 | } |
078e7b4a | 3146 | |
075027b1 | 3147 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3148 | { |
3149 | state |= EXP_INT; | |
075027b1 | 3150 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3151 | cp++; |
3152 | } | |
d8578e58 RS |
3153 | else if (cp == start) |
3154 | ; | |
eb659c41 RS |
3155 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3156 | { | |
3157 | state |= EXP_INT; | |
3158 | cp += 3; | |
3159 | } | |
3160 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3161 | { | |
3162 | state |= EXP_INT; | |
3163 | cp += 3; | |
3164 | } | |
3165 | ||
be95bee9 | 3166 | return ((ignore_trailing |
a8fe7202 AS |
3167 | || *cp == 0 || *cp == ' ' || *cp == '\t' || *cp == '\n' |
3168 | || *cp == '\r' || *cp == '\f') | |
078e7b4a | 3169 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3170 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3171 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3172 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3173 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3174 | } |
cc94f3b2 | 3175 | |
078e7b4a JB |
3176 | \f |
3177 | static Lisp_Object | |
971de7fb | 3178 | read_vector (Lisp_Object readcharfun, int bytecodeflag) |
078e7b4a JB |
3179 | { |
3180 | register int i; | |
3181 | register int size; | |
3182 | register Lisp_Object *ptr; | |
c15cfd1f | 3183 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3184 | register struct Lisp_Cons *otem; |
3185 | Lisp_Object len; | |
3186 | ||
3187 | tem = read_list (1, readcharfun); | |
3188 | len = Flength (tem); | |
3189 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3190 | ||
078e7b4a JB |
3191 | size = XVECTOR (vector)->size; |
3192 | ptr = XVECTOR (vector)->contents; | |
3193 | for (i = 0; i < size; i++) | |
3194 | { | |
c15cfd1f RS |
3195 | item = Fcar (tem); |
3196 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3197 | bytecode object, the docstring containing the bytecode and | |
3198 | constants values must be treated as unibyte and passed to | |
3199 | Fread, to get the actual bytecode string and constants vector. */ | |
3200 | if (bytecodeflag && load_force_doc_strings) | |
3201 | { | |
3202 | if (i == COMPILED_BYTECODE) | |
3203 | { | |
3204 | if (!STRINGP (item)) | |
6fa2b890 | 3205 | error ("Invalid byte code"); |
c15cfd1f RS |
3206 | |
3207 | /* Delay handling the bytecode slot until we know whether | |
3208 | it is lazily-loaded (we can tell by whether the | |
3209 | constants slot is nil). */ | |
3210 | ptr[COMPILED_CONSTANTS] = item; | |
3211 | item = Qnil; | |
3212 | } | |
3213 | else if (i == COMPILED_CONSTANTS) | |
3214 | { | |
3215 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3216 | ||
3217 | if (NILP (item)) | |
3218 | { | |
3219 | /* Coerce string to unibyte (like string-as-unibyte, | |
3220 | but without generating extra garbage and | |
3221 | guaranteeing no change in the contents). */ | |
bee91904 | 3222 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3223 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3224 | |
8792be66 | 3225 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3226 | if (!CONSP (item)) |
6fa2b890 | 3227 | error ("Invalid byte code"); |
c15cfd1f RS |
3228 | |
3229 | otem = XCONS (item); | |
c1d497be KR |
3230 | bytestr = XCAR (item); |
3231 | item = XCDR (item); | |
c15cfd1f RS |
3232 | free_cons (otem); |
3233 | } | |
3234 | ||
3235 | /* Now handle the bytecode slot. */ | |
3236 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3237 | } | |
8792be66 KH |
3238 | else if (i == COMPILED_DOC_STRING |
3239 | && STRINGP (item) | |
3240 | && ! STRING_MULTIBYTE (item)) | |
3241 | { | |
3242 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3243 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3244 | else | |
3245 | item = Fstring_as_multibyte (item); | |
3246 | } | |
c15cfd1f RS |
3247 | } |
3248 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3249 | otem = XCONS (tem); |
3250 | tem = Fcdr (tem); | |
3251 | free_cons (otem); | |
3252 | } | |
3253 | return vector; | |
3254 | } | |
177c0ea7 | 3255 | |
6f7f43d5 RS |
3256 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3257 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3258 | and make structure pure. */ |
3259 | ||
3260 | static Lisp_Object | |
971de7fb | 3261 | read_list (int flag, register Lisp_Object readcharfun) |
078e7b4a JB |
3262 | { |
3263 | /* -1 means check next element for defun, | |
3264 | 0 means don't check, | |
3265 | 1 means already checked and found defun. */ | |
3266 | int defunflag = flag < 0 ? -1 : 0; | |
3267 | Lisp_Object val, tail; | |
3268 | register Lisp_Object elt, tem; | |
3269 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3270 | /* 0 is the normal case. |
b2a30870 | 3271 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3272 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3273 | int doc_reference = 0; |
078e7b4a | 3274 | |
17634846 RS |
3275 | /* Initialize this to 1 if we are reading a list. */ |
3276 | int first_in_list = flag <= 0; | |
3277 | ||
078e7b4a JB |
3278 | val = Qnil; |
3279 | tail = Qnil; | |
3280 | ||
3281 | while (1) | |
3282 | { | |
e28552a4 | 3283 | int ch; |
078e7b4a | 3284 | GCPRO2 (val, tail); |
17634846 | 3285 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3286 | UNGCPRO; |
20ea2964 | 3287 | |
17634846 RS |
3288 | first_in_list = 0; |
3289 | ||
821d417e | 3290 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3291 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3292 | && ! NILP (elt) |
821d417e RS |
3293 | && !NILP (Vpurify_flag)) |
3294 | { | |
3295 | if (NILP (Vdoc_file_name)) | |
3296 | /* We have not yet called Snarf-documentation, so assume | |
3297 | this file is described in the DOC-MM.NN file | |
3298 | and Snarf-documentation will fill in the right value later. | |
3299 | For now, replace the whole list with 0. */ | |
3300 | doc_reference = 1; | |
3301 | else | |
3302 | /* We have already called Snarf-documentation, so make a relative | |
3303 | file name for this file, so it can be found properly | |
3304 | in the installed Lisp directory. | |
3305 | We don't use Fexpand_file_name because that would make | |
3306 | the directory absolute now. */ | |
3307 | elt = concat2 (build_string ("../lisp/"), | |
3308 | Ffile_name_nondirectory (elt)); | |
3309 | } | |
b2a30870 | 3310 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3311 | && ! NILP (elt) |
b2a30870 RS |
3312 | && load_force_doc_strings) |
3313 | doc_reference = 2; | |
20ea2964 | 3314 | |
6428369f | 3315 | if (ch) |
078e7b4a JB |
3316 | { |
3317 | if (flag > 0) | |
3318 | { | |
6428369f | 3319 | if (ch == ']') |
078e7b4a | 3320 | return val; |
336d4a9c | 3321 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3322 | } |
6428369f | 3323 | if (ch == ')') |
078e7b4a | 3324 | return val; |
6428369f | 3325 | if (ch == '.') |
078e7b4a JB |
3326 | { |
3327 | GCPRO2 (val, tail); | |
265a9e55 | 3328 | if (!NILP (tail)) |
f5df591a | 3329 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3330 | else |
3331 | val = read0 (readcharfun); | |
17634846 | 3332 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3333 | UNGCPRO; |
6428369f | 3334 | if (ch == ')') |
821d417e RS |
3335 | { |
3336 | if (doc_reference == 1) | |
3337 | return make_number (0); | |
b2a30870 RS |
3338 | if (doc_reference == 2) |
3339 | { | |
3340 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3341 | If it's in saved_doc_string, get it from there. |
3342 | ||
3343 | Here, we don't know if the string is a | |
3344 | bytecode string or a doc string. As a | |
3345 | bytecode string must be unibyte, we always | |
3346 | return a unibyte string. If it is actually a | |
3347 | doc string, caller must make it | |
3348 | multibyte. */ | |
8f924df7 | 3349 | |
c1d497be | 3350 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3351 | /* Position is negative for user variables. */ |
3352 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3353 | if (pos >= saved_doc_string_position |
3354 | && pos < (saved_doc_string_position | |
3355 | + saved_doc_string_length)) | |
3356 | { | |
3357 | int start = pos - saved_doc_string_position; | |
3358 | int from, to; | |
3359 | ||
3360 | /* Process quoting with ^A, | |
3361 | and find the end of the string, | |
3362 | which is marked with ^_ (037). */ | |
3363 | for (from = start, to = start; | |
3364 | saved_doc_string[from] != 037;) | |
3365 | { | |
3366 | int c = saved_doc_string[from++]; | |
3367 | if (c == 1) | |
3368 | { | |
3369 | c = saved_doc_string[from++]; | |
3370 | if (c == 1) | |
3371 | saved_doc_string[to++] = c; | |
3372 | else if (c == '0') | |
3373 | saved_doc_string[to++] = 0; | |
3374 | else if (c == '_') | |
3375 | saved_doc_string[to++] = 037; | |
3376 | } | |
3377 | else | |
3378 | saved_doc_string[to++] = c; | |
3379 | } | |
3380 | ||
8792be66 KH |
3381 | return make_unibyte_string (saved_doc_string + start, |
3382 | to - start); | |
b2a30870 | 3383 | } |
c15cfd1f RS |
3384 | /* Look in prev_saved_doc_string the same way. */ |
3385 | else if (pos >= prev_saved_doc_string_position | |
3386 | && pos < (prev_saved_doc_string_position | |
3387 | + prev_saved_doc_string_length)) | |
3388 | { | |
3389 | int start = pos - prev_saved_doc_string_position; | |
3390 | int from, to; | |
3391 | ||
3392 | /* Process quoting with ^A, | |
3393 | and find the end of the string, | |
3394 | which is marked with ^_ (037). */ | |
3395 | for (from = start, to = start; | |
3396 | prev_saved_doc_string[from] != 037;) | |
3397 | { | |
3398 | int c = prev_saved_doc_string[from++]; | |
3399 | if (c == 1) | |
3400 | { | |
3401 | c = prev_saved_doc_string[from++]; | |
3402 | if (c == 1) | |
3403 | prev_saved_doc_string[to++] = c; | |
3404 | else if (c == '0') | |
3405 | prev_saved_doc_string[to++] = 0; | |
3406 | else if (c == '_') | |
3407 | prev_saved_doc_string[to++] = 037; | |
3408 | } | |
3409 | else | |
3410 | prev_saved_doc_string[to++] = c; | |
3411 | } | |
3412 | ||
8792be66 KH |
3413 | return make_unibyte_string (prev_saved_doc_string |
3414 | + start, | |
3415 | to - start); | |
c15cfd1f | 3416 | } |
b2a30870 | 3417 | else |
8792be66 | 3418 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3419 | } |
3420 | ||
821d417e RS |
3421 | return val; |
3422 | } | |
336d4a9c | 3423 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3424 | } |
336d4a9c | 3425 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3426 | } |
3427 | tem = (read_pure && flag <= 0 | |
3428 | ? pure_cons (elt, Qnil) | |
3429 | : Fcons (elt, Qnil)); | |
265a9e55 | 3430 | if (!NILP (tail)) |
f5df591a | 3431 | XSETCDR (tail, tem); |
078e7b4a JB |
3432 | else |
3433 | val = tem; | |
3434 | tail = tem; | |
3435 | if (defunflag < 0) | |
3436 | defunflag = EQ (elt, Qdefun); | |
3437 | else if (defunflag > 0) | |
3438 | read_pure = 1; | |
3439 | } | |
3440 | } | |
3441 | \f | |
078e7b4a JB |
3442 | Lisp_Object initial_obarray; |
3443 | ||
d007f5c8 RS |
3444 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3445 | ||
3446 | int oblookup_last_bucket_number; | |
3447 | ||
4a25e32a | 3448 | static int hash_string (const char *ptr, int len); |
d007f5c8 RS |
3449 | |
3450 | /* Get an error if OBARRAY is not an obarray. | |
3451 | If it is one, return it. */ | |
3452 | ||
078e7b4a | 3453 | Lisp_Object |
971de7fb | 3454 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3455 | { |
8878319c | 3456 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3457 | { |
3458 | /* If Vobarray is now invalid, force it to be valid. */ | |
3459 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3460 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3461 | } |
3462 | return obarray; | |
3463 | } | |
3464 | ||
d007f5c8 RS |
3465 | /* Intern the C string STR: return a symbol with that name, |
3466 | interned in the current obarray. */ | |
078e7b4a JB |
3467 | |
3468 | Lisp_Object | |
971de7fb | 3469 | intern (const char *str) |
078e7b4a JB |
3470 | { |
3471 | Lisp_Object tem; | |
3472 | int len = strlen (str); | |
153a17b7 | 3473 | Lisp_Object obarray; |
078e7b4a | 3474 | |
153a17b7 | 3475 | obarray = Vobarray; |
cfff016d | 3476 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3477 | obarray = check_obarray (obarray); |
e28552a4 | 3478 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3479 | if (SYMBOLP (tem)) |
078e7b4a | 3480 | return tem; |
87631ef7 | 3481 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3482 | } |
4ad679f9 | 3483 | |
5e2327cf DN |
3484 | Lisp_Object |
3485 | intern_c_string (const char *str) | |
3486 | { | |
3487 | Lisp_Object tem; | |
3488 | int len = strlen (str); | |
3489 | Lisp_Object obarray; | |
3490 | ||
3491 | obarray = Vobarray; | |
3492 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) | |
3493 | obarray = check_obarray (obarray); | |
3494 | tem = oblookup (obarray, str, len, len); | |
3495 | if (SYMBOLP (tem)) | |
3496 | return tem; | |
3497 | ||
3498 | if (NILP (Vpurify_flag)) | |
3499 | /* Creating a non-pure string from a string literal not | |
3500 | implemented yet. We could just use make_string here and live | |
3501 | with the extra copy. */ | |
3502 | abort (); | |
3503 | ||
3504 | return Fintern (make_pure_c_string (str), obarray); | |
3505 | } | |
3506 | ||
4ad679f9 EN |
3507 | /* Create an uninterned symbol with name STR. */ |
3508 | ||
3509 | Lisp_Object | |
a8fe7202 | 3510 | make_symbol (const char *str) |
4ad679f9 EN |
3511 | { |
3512 | int len = strlen (str); | |
3513 | ||
a8fe7202 AS |
3514 | return Fmake_symbol (!NILP (Vpurify_flag) |
3515 | ? make_pure_string (str, len, len, 0) | |
3516 | : make_string (str, len)); | |
4ad679f9 | 3517 | } |
d007f5c8 | 3518 | \f |
078e7b4a | 3519 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3520 | doc: /* Return the canonical symbol whose name is STRING. |
3521 | If there is none, one is created by this function and returned. | |
3522 | A second optional argument specifies the obarray to use; | |
3523 | it defaults to the value of `obarray'. */) | |
5842a27b | 3524 | (Lisp_Object string, Lisp_Object obarray) |
078e7b4a JB |
3525 | { |
3526 | register Lisp_Object tem, sym, *ptr; | |
3527 | ||
265a9e55 | 3528 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3529 | obarray = check_obarray (obarray); |
3530 | ||
b7826503 | 3531 | CHECK_STRING (string); |
078e7b4a | 3532 | |
42a5b22f | 3533 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3534 | SCHARS (string), |
3535 | SBYTES (string)); | |
cfff016d | 3536 | if (!INTEGERP (tem)) |
078e7b4a JB |
3537 | return tem; |
3538 | ||
265a9e55 | 3539 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3540 | string = Fpurecopy (string); |
3541 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3542 | |
3543 | if (EQ (obarray, initial_obarray)) | |
3544 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3545 | else | |
3546 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3547 | |
d5db4077 | 3548 | if ((SREF (string, 0) == ':') |
a458d45d | 3549 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3550 | { |
3551 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3552 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3553 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3554 | } |
a0549832 | 3555 | |
078e7b4a | 3556 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3557 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3558 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3559 | else | |
3560 | XSYMBOL (sym)->next = 0; | |
3561 | *ptr = sym; | |
3562 | return sym; | |
3563 | } | |
3564 | ||
3565 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3566 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3567 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3568 | symbol is searched for. | |
3569 | A second optional argument specifies the obarray to use; | |
3570 | it defaults to the value of `obarray'. */) | |
5842a27b | 3571 | (Lisp_Object name, Lisp_Object obarray) |
078e7b4a | 3572 | { |
c2d47f4b | 3573 | register Lisp_Object tem, string; |
078e7b4a | 3574 | |
265a9e55 | 3575 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3576 | obarray = check_obarray (obarray); |
3577 | ||
b55048d4 GM |
3578 | if (!SYMBOLP (name)) |
3579 | { | |
b7826503 | 3580 | CHECK_STRING (name); |
c2d47f4b | 3581 | string = name; |
b55048d4 GM |
3582 | } |
3583 | else | |
c2d47f4b | 3584 | string = SYMBOL_NAME (name); |
078e7b4a | 3585 | |
42a5b22f | 3586 | tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3587 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3588 | return Qnil; | |
3589 | else | |
078e7b4a | 3590 | return tem; |
078e7b4a | 3591 | } |
d007f5c8 RS |
3592 | \f |
3593 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3594 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3595 | The value is t if a symbol was found and deleted, nil otherwise. | |
3596 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3597 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3598 | OBARRAY defaults to the value of the variable `obarray'. */) | |
5842a27b | 3599 | (Lisp_Object name, Lisp_Object obarray) |
d007f5c8 RS |
3600 | { |
3601 | register Lisp_Object string, tem; | |
3602 | int hash; | |
3603 | ||
3604 | if (NILP (obarray)) obarray = Vobarray; | |
3605 | obarray = check_obarray (obarray); | |
3606 | ||
3607 | if (SYMBOLP (name)) | |
d4c83cae | 3608 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3609 | else |
3610 | { | |
b7826503 | 3611 | CHECK_STRING (name); |
d007f5c8 RS |
3612 | string = name; |
3613 | } | |
3614 | ||
42a5b22f | 3615 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3616 | SCHARS (string), |
3617 | SBYTES (string)); | |
d007f5c8 RS |
3618 | if (INTEGERP (tem)) |
3619 | return Qnil; | |
3620 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3621 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3622 | return Qnil; | |
3623 | ||
8ab1650e SM |
3624 | /* There are plenty of other symbols which will screw up the Emacs |
3625 | session if we unintern them, as well as even more ways to use | |
3626 | `setq' or `fset' or whatnot to make the Emacs session | |
3627 | unusable. Let's not go down this silly road. --Stef */ | |
3628 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3629 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3630 | |
44c6c019 | 3631 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3632 | |
d007f5c8 RS |
3633 | hash = oblookup_last_bucket_number; |
3634 | ||
3635 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3636 | { |
3637 | if (XSYMBOL (tem)->next) | |
3638 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3639 | else | |
3640 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3641 | } | |
d007f5c8 RS |
3642 | else |
3643 | { | |
3644 | Lisp_Object tail, following; | |
3645 | ||
3646 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3647 | XSYMBOL (tail)->next; | |
3648 | tail = following) | |
3649 | { | |
3650 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3651 | if (EQ (following, tem)) | |
3652 | { | |
3653 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3654 | break; | |
3655 | } | |
3656 | } | |
3657 | } | |
3658 | ||
3659 | return Qt; | |
3660 | } | |
3661 | \f | |
3662 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3663 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3664 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3665 | |
3666 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3667 | |
3668 | Lisp_Object | |
40283062 | 3669 | oblookup (Lisp_Object obarray, register const char *ptr, EMACS_INT size, EMACS_INT size_byte) |
078e7b4a | 3670 | { |
7a70b397 RS |
3671 | int hash; |
3672 | int obsize; | |
078e7b4a JB |
3673 | register Lisp_Object tail; |
3674 | Lisp_Object bucket, tem; | |
3675 | ||
cfff016d | 3676 | if (!VECTORP (obarray) |
7c79a684 | 3677 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3678 | { |
3679 | obarray = check_obarray (obarray); | |
3680 | obsize = XVECTOR (obarray)->size; | |
3681 | } | |
519418b3 RS |
3682 | /* This is sometimes needed in the middle of GC. */ |
3683 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3684 | hash = hash_string (ptr, size_byte) % obsize; |
078e7b4a | 3685 | bucket = XVECTOR (obarray)->contents[hash]; |
d007f5c8 | 3686 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3687 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3688 | ; |
cfff016d | 3689 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3690 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3691 | else |
3692 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3693 | { |
d5db4077 KR |
3694 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3695 | && SCHARS (SYMBOL_NAME (tail)) == size | |
72af86bd | 3696 | && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) |
078e7b4a JB |
3697 | return tail; |
3698 | else if (XSYMBOL (tail)->next == 0) | |
3699 | break; | |
3700 | } | |
1805de4f | 3701 | XSETINT (tem, hash); |
078e7b4a JB |
3702 | return tem; |
3703 | } | |
3704 | ||
3705 | static int | |
4a25e32a | 3706 | hash_string (const char *ptr, int len) |
078e7b4a | 3707 | { |
4a25e32a PE |
3708 | register const char *p = ptr; |
3709 | register const char *end = p + len; | |
078e7b4a JB |
3710 | register unsigned char c; |
3711 | register int hash = 0; | |
3712 | ||
3713 | while (p != end) | |
3714 | { | |
3715 | c = *p++; | |
3716 | if (c >= 0140) c -= 40; | |
3717 | hash = ((hash<<3) + (hash>>28) + c); | |
3718 | } | |
3719 | return hash & 07777777777; | |
3720 | } | |
d007f5c8 | 3721 | \f |
078e7b4a | 3722 | void |
971de7fb | 3723 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a JB |
3724 | { |
3725 | register int i; | |
3726 | register Lisp_Object tail; | |
b7826503 | 3727 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3728 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3729 | { | |
3730 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3731 | if (SYMBOLP (tail)) |
078e7b4a JB |
3732 | while (1) |
3733 | { | |
3734 | (*fn) (tail, arg); | |
3735 | if (XSYMBOL (tail)->next == 0) | |
3736 | break; | |
1805de4f | 3737 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3738 | } |
3739 | } | |
3740 | } | |
3741 | ||
7d383292 | 3742 | static void |
971de7fb | 3743 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3744 | { |
3745 | call1 (function, sym); | |
3746 | } | |
3747 | ||
3748 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3749 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3750 | OBARRAY defaults to the value of `obarray'. */) | |
5842a27b | 3751 | (Lisp_Object function, Lisp_Object obarray) |
078e7b4a | 3752 | { |
265a9e55 | 3753 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3754 | obarray = check_obarray (obarray); |
3755 | ||
3756 | map_obarray (obarray, mapatoms_1, function); | |
3757 | return Qnil; | |
3758 | } | |
3759 | ||
5e88a39e | 3760 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3761 | |
3762 | void | |
971de7fb | 3763 | init_obarray (void) |
078e7b4a JB |
3764 | { |
3765 | Lisp_Object oblength; | |
078e7b4a | 3766 | |
baf69866 | 3767 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3768 | |
078e7b4a JB |
3769 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3770 | initial_obarray = Vobarray; | |
3771 | staticpro (&initial_obarray); | |
078e7b4a | 3772 | |
d67b4f80 | 3773 | Qunbound = Fmake_symbol (make_pure_c_string ("unbound")); |
ce5b453a SM |
3774 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
3775 | NILP (Vpurify_flag) check in intern_c_string. */ | |
3776 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
3777 | Qnil = intern_c_string ("nil"); | |
3778 | ||
3779 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
3780 | so those two need to be fixed manally. */ | |
3781 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); | |
078e7b4a | 3782 | XSYMBOL (Qunbound)->function = Qunbound; |
ce5b453a SM |
3783 | XSYMBOL (Qunbound)->plist = Qnil; |
3784 | /* XSYMBOL (Qnil)->function = Qunbound; */ | |
3785 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); | |
3786 | XSYMBOL (Qnil)->constant = 1; | |
3787 | XSYMBOL (Qnil)->plist = Qnil; | |
078e7b4a | 3788 | |
d67b4f80 | 3789 | Qt = intern_c_string ("t"); |
ce5b453a | 3790 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
44c6c019 | 3791 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3792 | |
3793 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3794 | Vpurify_flag = Qt; | |
3795 | ||
d67b4f80 | 3796 | Qvariable_documentation = intern_c_string ("variable-documentation"); |
0f73bb1c | 3797 | staticpro (&Qvariable_documentation); |
078e7b4a | 3798 | |
449fea39 | 3799 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3800 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3801 | } |
3802 | \f | |
3803 | void | |
971de7fb | 3804 | defsubr (struct Lisp_Subr *sname) |
078e7b4a JB |
3805 | { |
3806 | Lisp_Object sym; | |
d67b4f80 | 3807 | sym = intern_c_string (sname->symbol_name); |
5a6891e2 | 3808 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 3809 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3810 | } |
3811 | ||
3812 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3813 | void | |
3814 | defalias (sname, string) | |
3815 | struct Lisp_Subr *sname; | |
3816 | char *string; | |
3817 | { | |
3818 | Lisp_Object sym; | |
3819 | sym = intern (string); | |
1805de4f | 3820 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3821 | } |
3822 | #endif /* NOTDEF */ | |
3823 | ||
039c6cc3 GM |
3824 | /* Define an "integer variable"; a symbol whose value is forwarded to a |
3825 | C variable of type int. Sample call (munged w "xx" to fool make-docfile): | |
3826 | DEFxxVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 3827 | void |
ce5b453a SM |
3828 | defvar_int (struct Lisp_Intfwd *i_fwd, |
3829 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 3830 | { |
ce5b453a | 3831 | Lisp_Object sym; |
5e2327cf | 3832 | sym = intern_c_string (namestring); |
ce5b453a SM |
3833 | i_fwd->type = Lisp_Fwd_Int; |
3834 | i_fwd->intvar = address; | |
3835 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3836 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
3837 | } |
3838 | ||
f0529b5b | 3839 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 3840 | nil if address contains 0. */ |
078e7b4a | 3841 | void |
ce5b453a SM |
3842 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
3843 | const char *namestring, int *address) | |
078e7b4a | 3844 | { |
ce5b453a | 3845 | Lisp_Object sym; |
5e2327cf | 3846 | sym = intern_c_string (namestring); |
ce5b453a SM |
3847 | b_fwd->type = Lisp_Fwd_Bool; |
3848 | b_fwd->boolvar = address; | |
3849 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3850 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 3851 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3852 | } |
3853 | ||
1a0f90f7 KH |
3854 | /* Similar but define a variable whose value is the Lisp Object stored |
3855 | at address. Two versions: with and without gc-marking of the C | |
3856 | variable. The nopro version is used when that variable will be | |
3857 | gc-marked for some other reason, since marking the same slot twice | |
3858 | can cause trouble with strings. */ | |
078e7b4a | 3859 | void |
ce5b453a SM |
3860 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
3861 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 3862 | { |
ce5b453a | 3863 | Lisp_Object sym; |
5e2327cf | 3864 | sym = intern_c_string (namestring); |
ce5b453a SM |
3865 | o_fwd->type = Lisp_Fwd_Obj; |
3866 | o_fwd->objvar = address; | |
3867 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3868 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
3869 | } |
3870 | ||
078e7b4a | 3871 | void |
ce5b453a SM |
3872 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
3873 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 3874 | { |
ce5b453a | 3875 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 3876 | staticpro (address); |
078e7b4a JB |
3877 | } |
3878 | ||
950c215d | 3879 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 3880 | at a particular offset in the current kboard object. */ |
950c215d KH |
3881 | |
3882 | void | |
ce5b453a SM |
3883 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
3884 | const char *namestring, int offset) | |
950c215d | 3885 | { |
ce5b453a | 3886 | Lisp_Object sym; |
5e2327cf | 3887 | sym = intern_c_string (namestring); |
ce5b453a SM |
3888 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
3889 | ko_fwd->offset = offset; | |
3890 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; | |
3891 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 3892 | } |
078e7b4a | 3893 | \f |
11938f10 KH |
3894 | /* Record the value of load-path used at the start of dumping |
3895 | so we can see if the site changed it later during dumping. */ | |
3896 | static Lisp_Object dump_path; | |
3897 | ||
d5b28a9d | 3898 | void |
971de7fb | 3899 | init_lread (void) |
078e7b4a | 3900 | { |
8ea90aa3 | 3901 | const char *normal; |
e73997a1 | 3902 | int turn_off_warning = 0; |
078e7b4a | 3903 | |
279499f0 | 3904 | /* Compute the default load-path. */ |
46947372 JB |
3905 | #ifdef CANNOT_DUMP |
3906 | normal = PATH_LOADSEARCH; | |
e065a56e | 3907 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3908 | #else |
3909 | if (NILP (Vpurify_flag)) | |
3910 | normal = PATH_LOADSEARCH; | |
279499f0 | 3911 | else |
46947372 | 3912 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3913 | |
46947372 JB |
3914 | /* In a dumped Emacs, we normally have to reset the value of |
3915 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3916 | uses ../lisp, instead of the path of the installed elisp | |
3917 | libraries. However, if it appears that Vload_path was changed | |
3918 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3919 | if (initialized) |
3920 | { | |
4746118a | 3921 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3922 | { |
3923 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3924 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3925 | { |
3ddff138 RS |
3926 | Lisp_Object tem, tem1, sitelisp; |
3927 | ||
3928 | /* Remove site-lisp dirs from path temporarily and store | |
3929 | them in sitelisp, then conc them on at the end so | |
3930 | they're always first in path. */ | |
3931 | sitelisp = Qnil; | |
3932 | while (1) | |
3933 | { | |
3934 | tem = Fcar (Vload_path); | |
3935 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3936 | tem, Qnil); | |
3937 | if (!NILP (tem1)) | |
3938 | { | |
3939 | Vload_path = Fcdr (Vload_path); | |
3940 | sitelisp = Fcons (tem, sitelisp); | |
3941 | } | |
3942 | else | |
3943 | break; | |
3944 | } | |
3945 | ||
74180aa4 | 3946 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3947 | installation dir, if it exists. */ |
74180aa4 RS |
3948 | tem = Fexpand_file_name (build_string ("lisp"), |
3949 | Vinstallation_directory); | |
3a3056e5 RS |
3950 | tem1 = Ffile_exists_p (tem); |
3951 | if (!NILP (tem1)) | |
3952 | { | |
3953 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3954 | { |
3955 | turn_off_warning = 1; | |
3ddff138 | 3956 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3957 | } |
3a3056e5 RS |
3958 | } |
3959 | else | |
3960 | /* That dir doesn't exist, so add the build-time | |
3961 | Lisp dirs instead. */ | |
3962 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3963 | |
9fbc0116 RS |
3964 | /* Add leim under the installation dir, if it exists. */ |
3965 | tem = Fexpand_file_name (build_string ("leim"), | |
3966 | Vinstallation_directory); | |
3967 | tem1 = Ffile_exists_p (tem); | |
3968 | if (!NILP (tem1)) | |
3969 | { | |
3970 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3971 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3972 | } |
3973 | ||
88852d45 | 3974 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
3975 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3976 | Vinstallation_directory); | |
3977 | tem1 = Ffile_exists_p (tem); | |
3978 | if (!NILP (tem1)) | |
3979 | { | |
3980 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3981 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3982 | } |
0f337465 RS |
3983 | |
3984 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3985 | and it is run from where it was built, add to load-path |
3986 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3987 | |
3988 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3989 | { | |
33046fc9 RS |
3990 | Lisp_Object tem2; |
3991 | ||
0f337465 RS |
3992 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3993 | Vinstallation_directory); | |
3994 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3995 | |
3996 | /* Don't be fooled if they moved the entire source tree | |
3997 | AFTER dumping Emacs. If the build directory is indeed | |
3998 | different from the source dir, src/Makefile.in and | |
3999 | src/Makefile will not be found together. */ | |
4000 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4001 | Vinstallation_directory); | |
4002 | tem2 = Ffile_exists_p (tem); | |
4003 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4004 | { |
4005 | tem = Fexpand_file_name (build_string ("lisp"), | |
4006 | Vsource_directory); | |
4007 | ||
4008 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4009 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4010 | |
9fbc0116 RS |
4011 | tem = Fexpand_file_name (build_string ("leim"), |
4012 | Vsource_directory); | |
4013 | ||
4014 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4015 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4016 | |
0f337465 RS |
4017 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4018 | Vsource_directory); | |
4019 | ||
4020 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4021 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4022 | } |
4023 | } | |
66b7b0fe | 4024 | if (!NILP (sitelisp) && !no_site_lisp) |
3ddff138 | 4025 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); |
80667d53 RS |
4026 | } |
4027 | } | |
4746118a JB |
4028 | } |
4029 | else | |
11938f10 | 4030 | { |
7b396c6c RS |
4031 | /* NORMAL refers to the lisp dir in the source directory. */ |
4032 | /* We used to add ../lisp at the front here, but | |
4033 | that caused trouble because it was copied from dump_path | |
88852d45 | 4034 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4035 | It should be unnecessary. */ |
4036 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4037 | dump_path = Vload_path; |
4038 | } | |
46947372 | 4039 | #endif |
279499f0 | 4040 | |
9735b9ce | 4041 | #if (!(defined (WINDOWSNT) || (defined (HAVE_NS)))) |
177c0ea7 JB |
4042 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4043 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4044 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
9e2a2647 | 4045 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
317073d5 | 4046 | |
078e7b4a | 4047 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4048 | if (!turn_off_warning) |
4049 | { | |
4050 | Lisp_Object path_tail; | |
078e7b4a | 4051 | |
e73997a1 RS |
4052 | for (path_tail = Vload_path; |
4053 | !NILP (path_tail); | |
c1d497be | 4054 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4055 | { |
4056 | Lisp_Object dirfile; | |
4057 | dirfile = Fcar (path_tail); | |
4058 | if (STRINGP (dirfile)) | |
4059 | { | |
4060 | dirfile = Fdirectory_file_name (dirfile); | |
42a5b22f | 4061 | if (access (SSDATA (dirfile), 0) < 0) |
85496b8c | 4062 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4063 | XCAR (path_tail)); |
e73997a1 RS |
4064 | } |
4065 | } | |
4066 | } | |
9e2a2647 | 4067 | #endif /* !(WINDOWSNT || HAVE_NS) */ |
46947372 JB |
4068 | |
4069 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4070 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4071 | #ifndef CANNOT_DUMP |
46947372 JB |
4072 | if (NILP (Vpurify_flag) |
4073 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4074 | #endif |
279499f0 | 4075 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4076 | |
4077 | Vvalues = Qnil; | |
4078 | ||
078e7b4a | 4079 | load_in_progress = 0; |
4e53f562 | 4080 | Vload_file_name = Qnil; |
d2c6be7f RS |
4081 | |
4082 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4083 | |
4084 | Vstandard_input = Qt; | |
f74b0705 | 4085 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4086 | } |
4087 | ||
85496b8c | 4088 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4089 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4090 | |
d5b28a9d | 4091 | void |
a8fe7202 | 4092 | dir_warning (const char *format, Lisp_Object dirname) |
85496b8c RS |
4093 | { |
4094 | char *buffer | |
d5db4077 | 4095 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4096 | |
d5db4077 KR |
4097 | fprintf (stderr, format, SDATA (dirname)); |
4098 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4099 | /* Don't log the warning before we've initialized!! */ |
4100 | if (initialized) | |
4101 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4102 | } |
4103 | ||
078e7b4a | 4104 | void |
971de7fb | 4105 | syms_of_lread (void) |
078e7b4a JB |
4106 | { |
4107 | defsubr (&Sread); | |
4108 | defsubr (&Sread_from_string); | |
4109 | defsubr (&Sintern); | |
4110 | defsubr (&Sintern_soft); | |
d007f5c8 | 4111 | defsubr (&Sunintern); |
971a4293 | 4112 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4113 | defsubr (&Sload); |
228d4b1c | 4114 | defsubr (&Seval_buffer); |
078e7b4a JB |
4115 | defsubr (&Seval_region); |
4116 | defsubr (&Sread_char); | |
4117 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4118 | defsubr (&Sread_event); |
078e7b4a JB |
4119 | defsubr (&Sget_file_char); |
4120 | defsubr (&Smapatoms); | |
86d00812 | 4121 | defsubr (&Slocate_file_internal); |
078e7b4a | 4122 | |
29208e82 | 4123 | DEFVAR_LISP ("obarray", Vobarray, |
5de38842 PJ |
4124 | doc: /* Symbol table for use by `intern' and `read'. |
4125 | It is a vector whose length ought to be prime for best results. | |
4126 | The vector's contents don't make sense if examined from Lisp programs; | |
4127 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a | 4128 | |
29208e82 | 4129 | DEFVAR_LISP ("values", Vvalues, |
5de38842 PJ |
4130 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4131 | Order is reverse chronological. */); | |
078e7b4a | 4132 | |
29208e82 | 4133 | DEFVAR_LISP ("standard-input", Vstandard_input, |
5de38842 PJ |
4134 | doc: /* Stream for read to get input from. |
4135 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4136 | Vstandard_input = Qt; |
4137 | ||
29208e82 | 4138 | DEFVAR_LISP ("read-with-symbol-positions", Vread_with_symbol_positions, |
abb13b09 CW |
4139 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. |
4140 | ||
4141 | If this variable is a buffer, then only forms read from that buffer | |
4142 | will be added to `read-symbol-positions-list'. | |
4143 | If this variable is t, then all read forms will be added. | |
4144 | The effect of all other values other than nil are not currently | |
4145 | defined, although they may be in the future. | |
4146 | ||
4147 | The positions are relative to the last call to `read' or | |
4148 | `read-from-string'. It is probably a bad idea to set this variable at | |
4149 | the toplevel; bind it instead. */); | |
4150 | Vread_with_symbol_positions = Qnil; | |
4151 | ||
29208e82 | 4152 | DEFVAR_LISP ("read-symbol-positions-list", Vread_symbol_positions_list, |
d6567030 | 4153 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4154 | This variable is modified during calls to `read' or |
4155 | `read-from-string', but only when `read-with-symbol-positions' is | |
4156 | non-nil. | |
4157 | ||
4158 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4159 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4160 | symbol from the position where `read' or `read-from-string' started. |
4161 | ||
4162 | Note that a symbol will appear multiple times in this list, if it was | |
4163 | read multiple times. The list is in the same order as the symbols | |
4164 | were read in. */); | |
177c0ea7 | 4165 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4166 | |
29208e82 | 4167 | DEFVAR_LISP ("read-circle", Vread_circle, |
91f68422 CY |
4168 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); |
4169 | Vread_circle = Qt; | |
4170 | ||
29208e82 | 4171 | DEFVAR_LISP ("load-path", Vload_path, |
5de38842 PJ |
4172 | doc: /* *List of directories to search for files to load. |
4173 | Each element is a string (directory name) or nil (try default directory). | |
4174 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4175 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4176 | |
29208e82 | 4177 | DEFVAR_LISP ("load-suffixes", Vload_suffixes, |
971a4293 LT |
4178 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4179 | This list should not include the empty string. | |
4180 | `load' and related functions try to append these suffixes, in order, | |
4181 | to the specified file name if a Lisp suffix is allowed or required. */); | |
a4ada374 DN |
4182 | Vload_suffixes = Fcons (make_pure_c_string (".elc"), |
4183 | Fcons (make_pure_c_string (".el"), Qnil)); | |
29208e82 | 4184 | DEFVAR_LISP ("load-file-rep-suffixes", Vload_file_rep_suffixes, |
971a4293 LT |
4185 | doc: /* List of suffixes that indicate representations of \ |
4186 | the same file. | |
4187 | This list should normally start with the empty string. | |
4188 | ||
4189 | Enabling Auto Compression mode appends the suffixes in | |
4190 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4191 | mode removes them again. `load' and related functions use this list to | |
4192 | determine whether they should look for compressed versions of a file | |
4193 | and, if so, which suffixes they should try to append to the file name | |
4194 | in order to do so. However, if you want to customize which suffixes | |
4195 | the loading functions recognize as compression suffixes, you should | |
4196 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4197 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4198 | |
29208e82 | 4199 | DEFVAR_BOOL ("load-in-progress", load_in_progress, |
e0f24100 | 4200 | doc: /* Non-nil if inside of `load'. */); |
d67b4f80 | 4201 | Qload_in_progress = intern_c_string ("load-in-progress"); |
2baf5e76 | 4202 | staticpro (&Qload_in_progress); |
078e7b4a | 4203 | |
29208e82 | 4204 | DEFVAR_LISP ("after-load-alist", Vafter_load_alist, |
5de38842 | 4205 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4206 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4207 | ||
4208 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4209 | a symbol \(a feature name). | |
4210 | ||
4211 | When `load' is run and the file-name argument matches an element's | |
4212 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4213 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4214 | ||
4215 | An error in FORMS does not undo the load, but does prevent execution of | |
4216 | the rest of the FORMS. */); | |
078e7b4a JB |
4217 | Vafter_load_alist = Qnil; |
4218 | ||
29208e82 | 4219 | DEFVAR_LISP ("load-history", Vload_history, |
4801c5fa CY |
4220 | doc: /* Alist mapping loaded file names to symbols and features. |
4221 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4222 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4223 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4224 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4225 | for symbols and features not associated with any file. | |
4226 | ||
4227 | The remaining ENTRIES in the alist element describe the functions and | |
4228 | variables defined in that file, the features provided, and the | |
4229 | features required. Each entry has the form `(provide . FEATURE)', | |
4230 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
4231 | `(defface . SYMBOL)', or `(t . SYMBOL)'. In addition, an entry `(t | |
4232 | . SYMBOL)' may precede an entry `(defun . FUNCTION)', and means that | |
4233 | SYMBOL was an autoload before this file redefined it as a function. | |
0fc213e9 | 4234 | |
b502a9a1 RS |
4235 | During preloading, the file name recorded is relative to the main Lisp |
4236 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4237 | Vload_history = Qnil; |
4238 | ||
29208e82 | 4239 | DEFVAR_LISP ("load-file-name", Vload_file_name, |
5de38842 | 4240 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4241 | Vload_file_name = Qnil; |
4242 | ||
29208e82 | 4243 | DEFVAR_LISP ("user-init-file", Vuser_init_file, |
5de38842 | 4244 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4245 | If the file loaded had extension `.elc', and the corresponding source file |
4246 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4247 | by functions like `custom-save-all' which edit the init file. |
4248 | While Emacs loads and evaluates the init file, value is the real name | |
4249 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4250 | Vuser_init_file = Qnil; |
4251 | ||
29208e82 | 4252 | DEFVAR_LISP ("current-load-list", Vcurrent_load_list, |
5de38842 | 4253 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4254 | Vcurrent_load_list = Qnil; |
4255 | ||
29208e82 | 4256 | DEFVAR_LISP ("load-read-function", Vload_read_function, |
5de38842 PJ |
4257 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4258 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4259 | Vload_read_function = Qnil; |
4260 | ||
29208e82 | 4261 | DEFVAR_LISP ("load-source-file-function", Vload_source_file_function, |
9b33a603 | 4262 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4263 | This function is for doing code conversion before reading the source file. |
4264 | If nil, loading is done without any code conversion. | |
4265 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4266 | FULLNAME is the full name of FILE. | |
4267 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4268 | Vload_source_file_function = Qnil; |
4269 | ||
29208e82 | 4270 | DEFVAR_BOOL ("load-force-doc-strings", load_force_doc_strings, |
5de38842 PJ |
4271 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4272 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4273 | load_force_doc_strings = 0; |
4274 | ||
29208e82 | 4275 | DEFVAR_BOOL ("load-convert-to-unibyte", load_convert_to_unibyte, |
5de38842 PJ |
4276 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4277 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4278 | and is not meant for users to change. */); | |
94e554db RS |
4279 | load_convert_to_unibyte = 0; |
4280 | ||
29208e82 | 4281 | DEFVAR_LISP ("source-directory", Vsource_directory, |
5de38842 PJ |
4282 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4283 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4284 | Vsource_directory |
4285 | = Fexpand_file_name (build_string ("../"), | |
4286 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4287 | ||
29208e82 | 4288 | DEFVAR_LISP ("preloaded-file-list", Vpreloaded_file_list, |
5de38842 | 4289 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4290 | Vpreloaded_file_list = Qnil; |
4291 | ||
29208e82 | 4292 | DEFVAR_LISP ("byte-boolean-vars", Vbyte_boolean_vars, |
5de38842 | 4293 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4294 | Vbyte_boolean_vars = Qnil; |
4295 | ||
29208e82 | 4296 | DEFVAR_BOOL ("load-dangerous-libraries", load_dangerous_libraries, |
5de38842 PJ |
4297 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4298 | Some versions of XEmacs use different byte codes than Emacs. These | |
4299 | incompatible byte codes can make Emacs crash when it tries to execute | |
4300 | them. */); | |
da84f340 GM |
4301 | load_dangerous_libraries = 0; |
4302 | ||
29208e82 | 4303 | DEFVAR_BOOL ("force-load-messages", force_load_messages, |
beb0b7f9 EZ |
4304 | doc: /* Non-nil means force printing messages when loading Lisp files. |
4305 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4306 | force_load_messages = 0; | |
4307 | ||
29208e82 | 4308 | DEFVAR_LISP ("bytecomp-version-regexp", Vbytecomp_version_regexp, |
5de38842 PJ |
4309 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4310 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4311 | from the file, and matches them against this regular expression. | |
4312 | When the regular expression matches, the file is considered to be safe | |
4313 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4314 | Vbytecomp_version_regexp |
d67b4f80 | 4315 | = make_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4316 | |
29208e82 | 4317 | DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list, |
3f39f996 RS |
4318 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); |
4319 | Veval_buffer_list = Qnil; | |
4320 | ||
29208e82 | 4321 | DEFVAR_LISP ("old-style-backquotes", Vold_style_backquotes, |
5aa273b0 SM |
4322 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); |
4323 | Vold_style_backquotes = Qnil; | |
d67b4f80 | 4324 | Qold_style_backquotes = intern_c_string ("old-style-backquotes"); |
1d064697 | 4325 | staticpro (&Qold_style_backquotes); |
5aa273b0 | 4326 | |
a90ba1e2 KH |
4327 | /* Vsource_directory was initialized in init_lread. */ |
4328 | ||
d2c6be7f RS |
4329 | load_descriptor_list = Qnil; |
4330 | staticpro (&load_descriptor_list); | |
4331 | ||
d67b4f80 | 4332 | Qcurrent_load_list = intern_c_string ("current-load-list"); |
8a1f1537 RS |
4333 | staticpro (&Qcurrent_load_list); |
4334 | ||
d67b4f80 | 4335 | Qstandard_input = intern_c_string ("standard-input"); |
078e7b4a JB |
4336 | staticpro (&Qstandard_input); |
4337 | ||
d67b4f80 | 4338 | Qread_char = intern_c_string ("read-char"); |
078e7b4a JB |
4339 | staticpro (&Qread_char); |
4340 | ||
d67b4f80 | 4341 | Qget_file_char = intern_c_string ("get-file-char"); |
078e7b4a | 4342 | staticpro (&Qget_file_char); |
7bd279cd | 4343 | |
d67b4f80 | 4344 | Qget_emacs_mule_file_char = intern_c_string ("get-emacs-mule-file-char"); |
8792be66 KH |
4345 | staticpro (&Qget_emacs_mule_file_char); |
4346 | ||
d67b4f80 | 4347 | Qload_force_doc_strings = intern_c_string ("load-force-doc-strings"); |
8792be66 KH |
4348 | staticpro (&Qload_force_doc_strings); |
4349 | ||
d67b4f80 | 4350 | Qbackquote = intern_c_string ("`"); |
17634846 | 4351 | staticpro (&Qbackquote); |
d67b4f80 | 4352 | Qcomma = intern_c_string (","); |
17634846 | 4353 | staticpro (&Qcomma); |
d67b4f80 | 4354 | Qcomma_at = intern_c_string (",@"); |
17634846 | 4355 | staticpro (&Qcomma_at); |
d67b4f80 | 4356 | Qcomma_dot = intern_c_string (",."); |
17634846 RS |
4357 | staticpro (&Qcomma_dot); |
4358 | ||
d67b4f80 | 4359 | Qinhibit_file_name_operation = intern_c_string ("inhibit-file-name-operation"); |
74549846 RS |
4360 | staticpro (&Qinhibit_file_name_operation); |
4361 | ||
d67b4f80 | 4362 | Qascii_character = intern_c_string ("ascii-character"); |
7bd279cd | 4363 | staticpro (&Qascii_character); |
c2225d00 | 4364 | |
d67b4f80 | 4365 | Qfunction = intern_c_string ("function"); |
2b6cae0c RS |
4366 | staticpro (&Qfunction); |
4367 | ||
d67b4f80 | 4368 | Qload = intern_c_string ("load"); |
c2225d00 | 4369 | staticpro (&Qload); |
20ea2964 | 4370 | |
d67b4f80 | 4371 | Qload_file_name = intern_c_string ("load-file-name"); |
20ea2964 | 4372 | staticpro (&Qload_file_name); |
11938f10 | 4373 | |
d67b4f80 | 4374 | Qeval_buffer_list = intern_c_string ("eval-buffer-list"); |
3f39f996 RS |
4375 | staticpro (&Qeval_buffer_list); |
4376 | ||
d67b4f80 | 4377 | Qfile_truename = intern_c_string ("file-truename"); |
6bb6da3e AM |
4378 | staticpro (&Qfile_truename) ; |
4379 | ||
d67b4f80 | 4380 | Qdo_after_load_evaluation = intern_c_string ("do-after-load-evaluation"); |
6bb6da3e AM |
4381 | staticpro (&Qdo_after_load_evaluation) ; |
4382 | ||
11938f10 | 4383 | staticpro (&dump_path); |
4ad679f9 EN |
4384 | |
4385 | staticpro (&read_objects); | |
4386 | read_objects = Qnil; | |
9e062b6c | 4387 | staticpro (&seen_list); |
f153db13 | 4388 | seen_list = Qnil; |
177c0ea7 | 4389 | |
7ee3bd7b GM |
4390 | Vloads_in_progress = Qnil; |
4391 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4392 | |
d67b4f80 | 4393 | Qhash_table = intern_c_string ("hash-table"); |
f19a0f5b | 4394 | staticpro (&Qhash_table); |
d67b4f80 | 4395 | Qdata = intern_c_string ("data"); |
f19a0f5b | 4396 | staticpro (&Qdata); |
d67b4f80 | 4397 | Qtest = intern_c_string ("test"); |
f19a0f5b | 4398 | staticpro (&Qtest); |
d67b4f80 | 4399 | Qsize = intern_c_string ("size"); |
f19a0f5b | 4400 | staticpro (&Qsize); |
d67b4f80 | 4401 | Qweakness = intern_c_string ("weakness"); |
f19a0f5b | 4402 | staticpro (&Qweakness); |
d67b4f80 | 4403 | Qrehash_size = intern_c_string ("rehash-size"); |
f19a0f5b | 4404 | staticpro (&Qrehash_size); |
d67b4f80 | 4405 | Qrehash_threshold = intern_c_string ("rehash-threshold"); |
f19a0f5b | 4406 | staticpro (&Qrehash_threshold); |
078e7b4a | 4407 | } |