Commit | Line | Data |
---|---|---|
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; |
b9598260 | 76 | Lisp_Object Qlexical_binding; |
6bb6da3e | 77 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 78 | |
8792be66 KH |
79 | /* Used instead of Qget_file_char while loading *.elc files compiled |
80 | by Emacs 21 or older. */ | |
81 | static Lisp_Object Qget_emacs_mule_file_char; | |
82 | ||
83 | static Lisp_Object Qload_force_doc_strings; | |
84 | ||
b9598260 | 85 | extern Lisp_Object Qinternal_interpreter_environment; |
078e7b4a | 86 | |
2baf5e76 | 87 | static Lisp_Object Qload_in_progress; |
ece435a5 | 88 | |
4ad679f9 EN |
89 | /* The association list of objects read with the #n=object form. |
90 | Each member of the list has the form (n . object), and is used to | |
91 | look up the object for the corresponding #n# construct. | |
92 | It must be set to nil before all top-level calls to read0. */ | |
93 | Lisp_Object read_objects; | |
94 | ||
8792be66 KH |
95 | /* Nonzero means READCHAR should read bytes one by one (not character) |
96 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
97 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
98 | static int load_each_byte; | |
99 | ||
d2c6be7f RS |
100 | /* List of descriptors now open for Fload. */ |
101 | static Lisp_Object load_descriptor_list; | |
102 | ||
b2a30870 | 103 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
104 | static FILE *instream; |
105 | ||
106 | /* When nonzero, read conses in pure space */ | |
107 | static int read_pure; | |
108 | ||
b2a30870 | 109 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
da43f021 EZ |
110 | static EMACS_INT read_from_string_index; |
111 | static EMACS_INT read_from_string_index_byte; | |
112 | static EMACS_INT read_from_string_limit; | |
17634846 | 113 | |
abb13b09 CW |
114 | /* Number of characters read in the current call to Fread or |
115 | Fread_from_string. */ | |
da43f021 | 116 | static EMACS_INT readchar_count; |
6f7f43d5 | 117 | |
c15cfd1f | 118 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
119 | static char *saved_doc_string; |
120 | /* Length of buffer allocated in saved_doc_string. */ | |
121 | static int saved_doc_string_size; | |
122 | /* Length of actual data in saved_doc_string. */ | |
123 | static int saved_doc_string_length; | |
124 | /* This is the file position that string came from. */ | |
68c45bf0 | 125 | static file_offset saved_doc_string_position; |
b2a30870 | 126 | |
c15cfd1f RS |
127 | /* This contains the previous string skipped with #@. |
128 | We copy it from saved_doc_string when a new string | |
129 | is put in saved_doc_string. */ | |
130 | static char *prev_saved_doc_string; | |
131 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
132 | static int prev_saved_doc_string_size; | |
133 | /* Length of actual data in prev_saved_doc_string. */ | |
134 | static int prev_saved_doc_string_length; | |
135 | /* This is the file position that string came from. */ | |
68c45bf0 | 136 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 137 | |
17634846 RS |
138 | /* Nonzero means inside a new-style backquote |
139 | with no surrounding parentheses. | |
140 | Fread initializes this to zero, so we need not specbind it | |
141 | or worry about what happens to it when there is an error. */ | |
142 | static int new_backquote_flag; | |
29208e82 | 143 | static Lisp_Object Qold_style_backquotes; |
7ee3bd7b GM |
144 | |
145 | /* A list of file names for files being loaded in Fload. Used to | |
146 | check for recursive loads. */ | |
147 | ||
9942fa0c | 148 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 149 | |
f57e2426 J |
150 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
151 | Lisp_Object); | |
8792be66 | 152 | |
defb1411 | 153 | static void readevalloop (Lisp_Object, FILE*, Lisp_Object, int, |
f57e2426 J |
154 | Lisp_Object, Lisp_Object, |
155 | Lisp_Object, Lisp_Object); | |
156 | static Lisp_Object load_unwind (Lisp_Object); | |
157 | static Lisp_Object load_descriptor_unwind (Lisp_Object); | |
550a625e | 158 | |
f57e2426 | 159 | static void invalid_syntax (const char *, int) NO_RETURN; |
971de7fb | 160 | static void end_of_file_error (void) NO_RETURN; |
336d4a9c | 161 | |
078e7b4a | 162 | \f |
8792be66 KH |
163 | /* Functions that read one byte from the current source READCHARFUN |
164 | or unreads one byte. If the integer argument C is -1, it returns | |
165 | one read byte, or -1 when there's no more byte in the source. If C | |
166 | is 0 or positive, it unreads C, and the return value is not | |
167 | interesting. */ | |
168 | ||
f57e2426 J |
169 | static int readbyte_for_lambda (int, Lisp_Object); |
170 | static int readbyte_from_file (int, Lisp_Object); | |
171 | static int readbyte_from_string (int, Lisp_Object); | |
8792be66 | 172 | |
078e7b4a JB |
173 | /* Handle unreading and rereading of characters. |
174 | Write READCHAR to read a character, | |
fe0e03f3 KH |
175 | UNREAD(c) to unread c to be read again. |
176 | ||
8792be66 | 177 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 178 | |
1202434b | 179 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
180 | #define UNREAD(c) unreadchar (readcharfun, c) |
181 | ||
1202434b KH |
182 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
183 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
184 | ||
8792be66 | 185 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
186 | Qlambda, or a cons, we use this to keep an unread character because |
187 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
188 | means that there's no unread character. */ |
189 | static int unread_char; | |
190 | ||
078e7b4a | 191 | static int |
971de7fb | 192 | readchar (Lisp_Object readcharfun, int *multibyte) |
078e7b4a JB |
193 | { |
194 | Lisp_Object tem; | |
95384e1e | 195 | register int c; |
f57e2426 | 196 | int (*readbyte) (int, Lisp_Object); |
8792be66 KH |
197 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; |
198 | int i, len; | |
199 | int emacs_mule_encoding = 0; | |
078e7b4a | 200 | |
1202434b KH |
201 | if (multibyte) |
202 | *multibyte = 0; | |
203 | ||
abb13b09 | 204 | readchar_count++; |
177c0ea7 | 205 | |
cfff016d | 206 | if (BUFFERP (readcharfun)) |
078e7b4a | 207 | { |
bed23cb2 | 208 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 209 | |
da43f021 | 210 | EMACS_INT pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 211 | |
bed23cb2 RS |
212 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
213 | return -1; | |
078e7b4a | 214 | |
4b4deea2 | 215 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 216 | { |
00a9a935 | 217 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
218 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
219 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 220 | c = STRING_CHAR (p); |
1202434b KH |
221 | if (multibyte) |
222 | *multibyte = 1; | |
bed23cb2 RS |
223 | } |
224 | else | |
225 | { | |
226 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
227 | if (! ASCII_BYTE_P (c)) |
228 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 229 | pt_byte++; |
6f7f43d5 | 230 | } |
bed23cb2 | 231 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 232 | |
bed23cb2 | 233 | return c; |
078e7b4a | 234 | } |
cfff016d | 235 | if (MARKERP (readcharfun)) |
078e7b4a | 236 | { |
bed23cb2 | 237 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 238 | |
da43f021 | 239 | EMACS_INT bytepos = marker_byte_position (readcharfun); |
00a9a935 | 240 | |
bed23cb2 RS |
241 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
242 | return -1; | |
6f7f43d5 | 243 | |
4b4deea2 | 244 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 245 | { |
00a9a935 | 246 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
247 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
248 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 249 | c = STRING_CHAR (p); |
1202434b KH |
250 | if (multibyte) |
251 | *multibyte = 1; | |
bed23cb2 RS |
252 | } |
253 | else | |
254 | { | |
255 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
256 | if (! ASCII_BYTE_P (c)) |
257 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 258 | bytepos++; |
6f7f43d5 RS |
259 | } |
260 | ||
bed23cb2 RS |
261 | XMARKER (readcharfun)->bytepos = bytepos; |
262 | XMARKER (readcharfun)->charpos++; | |
263 | ||
264 | return c; | |
078e7b4a | 265 | } |
ad0153e4 RS |
266 | |
267 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
268 | { |
269 | readbyte = readbyte_for_lambda; | |
270 | goto read_multibyte; | |
271 | } | |
ad0153e4 | 272 | |
078e7b4a | 273 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 274 | { |
8792be66 KH |
275 | readbyte = readbyte_from_file; |
276 | goto read_multibyte; | |
2c1b5dbe | 277 | } |
078e7b4a | 278 | |
cfff016d | 279 | if (STRINGP (readcharfun)) |
078e7b4a | 280 | { |
bed23cb2 | 281 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 282 | c = -1; |
1202434b KH |
283 | else if (STRING_MULTIBYTE (readcharfun)) |
284 | { | |
285 | if (multibyte) | |
286 | *multibyte = 1; | |
287 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
288 | read_from_string_index, | |
289 | read_from_string_index_byte); | |
290 | } | |
f0354c03 | 291 | else |
1202434b KH |
292 | { |
293 | c = SREF (readcharfun, read_from_string_index_byte); | |
294 | read_from_string_index++; | |
295 | read_from_string_index_byte++; | |
296 | } | |
078e7b4a JB |
297 | return c; |
298 | } | |
299 | ||
8792be66 KH |
300 | if (CONSP (readcharfun)) |
301 | { | |
302 | /* This is the case that read_vector is reading from a unibyte | |
303 | string that contains a byte sequence previously skipped | |
304 | because of #@NUMBER. The car part of readcharfun is that | |
305 | string, and the cdr part is a value of readcharfun given to | |
306 | read_vector. */ | |
307 | readbyte = readbyte_from_string; | |
308 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
309 | emacs_mule_encoding = 1; | |
310 | goto read_multibyte; | |
311 | } | |
8f924df7 | 312 | |
8792be66 KH |
313 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
314 | { | |
315 | readbyte = readbyte_from_file; | |
316 | emacs_mule_encoding = 1; | |
317 | goto read_multibyte; | |
318 | } | |
078e7b4a JB |
319 | |
320 | tem = call0 (readcharfun); | |
321 | ||
265a9e55 | 322 | if (NILP (tem)) |
078e7b4a JB |
323 | return -1; |
324 | return XINT (tem); | |
8792be66 KH |
325 | |
326 | read_multibyte: | |
327 | if (unread_char >= 0) | |
328 | { | |
329 | c = unread_char; | |
330 | unread_char = -1; | |
331 | return c; | |
332 | } | |
333 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
334 | if (c < 0 || load_each_byte) |
335 | return c; | |
336 | if (multibyte) | |
337 | *multibyte = 1; | |
338 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
339 | return c; |
340 | if (emacs_mule_encoding) | |
341 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
342 | i = 0; | |
343 | buf[i++] = c; | |
344 | len = BYTES_BY_CHAR_HEAD (c); | |
345 | while (i < len) | |
346 | { | |
347 | c = (*readbyte) (-1, readcharfun); | |
348 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
349 | { | |
350 | while (--i > 1) | |
351 | (*readbyte) (buf[i], readcharfun); | |
352 | return BYTE8_TO_CHAR (buf[0]); | |
353 | } | |
354 | buf[i++] = c; | |
355 | } | |
62a6e103 | 356 | return STRING_CHAR (buf); |
078e7b4a JB |
357 | } |
358 | ||
359 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
360 | If the stream is a user function, call it with the char as argument. */ | |
361 | ||
362 | static void | |
971de7fb | 363 | unreadchar (Lisp_Object readcharfun, int c) |
078e7b4a | 364 | { |
abb13b09 | 365 | readchar_count--; |
92fddec9 KH |
366 | if (c == -1) |
367 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
368 | since readchar didn't advance it when we read it. */ | |
369 | ; | |
cfff016d | 370 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 371 | { |
bed23cb2 | 372 | struct buffer *b = XBUFFER (readcharfun); |
da43f021 | 373 | EMACS_INT bytepos = BUF_PT_BYTE (b); |
d7760ca9 | 374 | |
8792be66 | 375 | BUF_PT (b)--; |
4b4deea2 | 376 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 377 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 378 | else |
8792be66 | 379 | bytepos--; |
d7760ca9 | 380 | |
8792be66 | 381 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 382 | } |
cfff016d | 383 | else if (MARKERP (readcharfun)) |
d7760ca9 | 384 | { |
bed23cb2 | 385 | struct buffer *b = XMARKER (readcharfun)->buffer; |
da43f021 | 386 | EMACS_INT bytepos = XMARKER (readcharfun)->bytepos; |
d7760ca9 | 387 | |
8792be66 | 388 | XMARKER (readcharfun)->charpos--; |
4b4deea2 | 389 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 390 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 391 | else |
8792be66 | 392 | bytepos--; |
d7760ca9 | 393 | |
8792be66 | 394 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 395 | } |
cfff016d | 396 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
397 | { |
398 | read_from_string_index--; | |
399 | read_from_string_index_byte | |
400 | = string_char_to_byte (readcharfun, read_from_string_index); | |
401 | } | |
8792be66 KH |
402 | else if (CONSP (readcharfun)) |
403 | { | |
404 | unread_char = c; | |
405 | } | |
ad0153e4 | 406 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
407 | { |
408 | unread_char = c; | |
409 | } | |
410 | else if (EQ (readcharfun, Qget_file_char) | |
411 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
412 | { | |
413 | if (load_each_byte) | |
d85d3839 MB |
414 | { |
415 | BLOCK_INPUT; | |
416 | ungetc (c, instream); | |
417 | UNBLOCK_INPUT; | |
418 | } | |
8792be66 KH |
419 | else |
420 | unread_char = c; | |
421 | } | |
078e7b4a JB |
422 | else |
423 | call1 (readcharfun, make_number (c)); | |
424 | } | |
425 | ||
8792be66 | 426 | static int |
971de7fb | 427 | readbyte_for_lambda (int c, Lisp_Object readcharfun) |
8792be66 KH |
428 | { |
429 | return read_bytecode_char (c >= 0); | |
430 | } | |
431 | ||
432 | ||
433 | static int | |
971de7fb | 434 | readbyte_from_file (int c, Lisp_Object readcharfun) |
8792be66 KH |
435 | { |
436 | if (c >= 0) | |
437 | { | |
66cd0949 | 438 | BLOCK_INPUT; |
8792be66 | 439 | ungetc (c, instream); |
66cd0949 | 440 | UNBLOCK_INPUT; |
8792be66 KH |
441 | return 0; |
442 | } | |
443 | ||
d85d3839 | 444 | BLOCK_INPUT; |
8792be66 | 445 | c = getc (instream); |
d85d3839 | 446 | |
8792be66 | 447 | #ifdef EINTR |
d85d3839 MB |
448 | /* Interrupted reads have been observed while reading over the network */ |
449 | while (c == EOF && ferror (instream) && errno == EINTR) | |
450 | { | |
57cb2e6f | 451 | UNBLOCK_INPUT; |
d85d3839 | 452 | QUIT; |
d85d3839 | 453 | BLOCK_INPUT; |
57cb2e6f | 454 | clearerr (instream); |
d85d3839 | 455 | c = getc (instream); |
66cd0949 | 456 | } |
8792be66 | 457 | #endif |
d85d3839 | 458 | |
57cb2e6f MB |
459 | UNBLOCK_INPUT; |
460 | ||
8792be66 KH |
461 | return (c == EOF ? -1 : c); |
462 | } | |
463 | ||
464 | static int | |
971de7fb | 465 | readbyte_from_string (int c, Lisp_Object readcharfun) |
8792be66 KH |
466 | { |
467 | Lisp_Object string = XCAR (readcharfun); | |
468 | ||
469 | if (c >= 0) | |
470 | { | |
471 | read_from_string_index--; | |
472 | read_from_string_index_byte | |
473 | = string_char_to_byte (string, read_from_string_index); | |
474 | } | |
8f924df7 | 475 | |
8792be66 KH |
476 | if (read_from_string_index >= read_from_string_limit) |
477 | c = -1; | |
478 | else | |
479 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
480 | read_from_string_index, | |
481 | read_from_string_index_byte); | |
482 | return c; | |
483 | } | |
484 | ||
485 | ||
486 | /* Read one non-ASCII character from INSTREAM. The character is | |
487 | encoded in `emacs-mule' and the first byte is already read in | |
488 | C. */ | |
489 | ||
8792be66 | 490 | static int |
971de7fb | 491 | read_emacs_mule_char (int c, int (*readbyte) (int, Lisp_Object), Lisp_Object readcharfun) |
8792be66 KH |
492 | { |
493 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
494 | unsigned char buf[4]; | |
495 | int len = emacs_mule_bytes[c]; | |
496 | struct charset *charset; | |
497 | int i; | |
498 | unsigned code; | |
499 | ||
500 | if (len == 1) | |
501 | /* C is not a valid leading-code of `emacs-mule'. */ | |
502 | return BYTE8_TO_CHAR (c); | |
503 | ||
504 | i = 0; | |
505 | buf[i++] = c; | |
506 | while (i < len) | |
507 | { | |
508 | c = (*readbyte) (-1, readcharfun); | |
509 | if (c < 0xA0) | |
510 | { | |
511 | while (--i > 1) | |
512 | (*readbyte) (buf[i], readcharfun); | |
513 | return BYTE8_TO_CHAR (buf[0]); | |
514 | } | |
515 | buf[i++] = c; | |
516 | } | |
517 | ||
518 | if (len == 2) | |
519 | { | |
b84ae584 | 520 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
521 | code = buf[1] & 0x7F; |
522 | } | |
523 | else if (len == 3) | |
524 | { | |
525 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
526 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
527 | { | |
b84ae584 | 528 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8792be66 KH |
529 | code = buf[2] & 0x7F; |
530 | } | |
531 | else | |
532 | { | |
b84ae584 | 533 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
534 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; |
535 | } | |
536 | } | |
537 | else | |
538 | { | |
b84ae584 | 539 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8f924df7 | 540 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
541 | } |
542 | c = DECODE_CHAR (charset, code); | |
543 | if (c < 0) | |
544 | Fsignal (Qinvalid_read_syntax, | |
545 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
546 | return c; | |
547 | } | |
548 | ||
549 | ||
f57e2426 J |
550 | static Lisp_Object read_internal_start (Lisp_Object, Lisp_Object, |
551 | Lisp_Object); | |
552 | static Lisp_Object read0 (Lisp_Object); | |
553 | static Lisp_Object read1 (Lisp_Object, int *, int); | |
abb13b09 | 554 | |
f57e2426 J |
555 | static Lisp_Object read_list (int, Lisp_Object); |
556 | static Lisp_Object read_vector (Lisp_Object, int); | |
abb13b09 | 557 | |
f57e2426 J |
558 | static Lisp_Object substitute_object_recurse (Lisp_Object, Lisp_Object, |
559 | Lisp_Object); | |
560 | static void substitute_object_in_subtree (Lisp_Object, | |
561 | Lisp_Object); | |
562 | static void substitute_in_interval (INTERVAL, Lisp_Object); | |
9e062b6c | 563 | |
078e7b4a | 564 | \f |
bed23cb2 | 565 | /* Get a character from the tty. */ |
078e7b4a | 566 | |
f42be754 JB |
567 | /* Read input events until we get one that's acceptable for our purposes. |
568 | ||
569 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
570 | until we get a character we like, and then stuffed into | |
571 | unread_switch_frame. | |
572 | ||
573 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
574 | if the unmodified version of the symbol has a Qascii_character | |
575 | property, and use that character, if present. | |
576 | ||
577 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
578 | get isn't an ASCII character with modifiers. If it's zero but | |
579 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
580 | character. |
581 | ||
582 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
583 | if the character warrants that. |
584 | ||
585 | If SECONDS is a number, we wait that many seconds for input, and | |
586 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 587 | |
2f7c71a1 | 588 | static Lisp_Object |
d5a3eaaf AS |
589 | read_filtered_event (int no_switch_frame, int ascii_required, |
590 | int error_nonascii, int input_method, Lisp_Object seconds) | |
f42be754 | 591 | { |
4332cf50 | 592 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 593 | EMACS_TIME end_time; |
153a17b7 | 594 | |
5dbf89bc | 595 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
596 | if (display_hourglass_p) |
597 | cancel_hourglass (); | |
5dbf89bc | 598 | #endif |
177c0ea7 | 599 | |
153a17b7 | 600 | delayed_switch_frame = Qnil; |
f42be754 | 601 | |
50e48299 CY |
602 | /* Compute timeout. */ |
603 | if (NUMBERP (seconds)) | |
604 | { | |
605 | EMACS_TIME wait_time; | |
606 | int sec, usec; | |
51d8b30e | 607 | double duration = extract_float (seconds); |
50e48299 CY |
608 | |
609 | sec = (int) duration; | |
610 | usec = (duration - sec) * 1000000; | |
611 | EMACS_GET_TIME (end_time); | |
612 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
613 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
614 | } | |
615 | ||
251bc578 | 616 | /* Read until we get an acceptable event. */ |
f42be754 | 617 | retry: |
88852d45 | 618 | do |
251bc578 KL |
619 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
620 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 621 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 622 | |
cfff016d | 623 | if (BUFFERP (val)) |
6c82d689 KH |
624 | goto retry; |
625 | ||
f42be754 | 626 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 627 | character. This is better than signaling an error just because |
f42be754 JB |
628 | the last characters were typed to a separate minibuffer frame, |
629 | for example. Eventually, some code which can deal with | |
630 | switch-frame events will read it and process it. */ | |
631 | if (no_switch_frame | |
632 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 633 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
634 | { |
635 | delayed_switch_frame = val; | |
636 | goto retry; | |
637 | } | |
638 | ||
50e48299 | 639 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
640 | { |
641 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 642 | if (SYMBOLP (val)) |
f42be754 | 643 | { |
95384e1e | 644 | Lisp_Object tem, tem1; |
f42be754 JB |
645 | tem = Fget (val, Qevent_symbol_element_mask); |
646 | if (!NILP (tem)) | |
647 | { | |
648 | tem1 = Fget (Fcar (tem), Qascii_character); | |
649 | /* Merge this symbol's modifier bits | |
650 | with the ASCII equivalent of its basic code. */ | |
651 | if (!NILP (tem1)) | |
baf69866 | 652 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
653 | } |
654 | } | |
177c0ea7 | 655 | |
f42be754 | 656 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 657 | if (!INTEGERP (val)) |
f42be754 JB |
658 | { |
659 | if (error_nonascii) | |
660 | { | |
1ec84625 | 661 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
662 | error ("Non-character input-event"); |
663 | } | |
664 | else | |
665 | goto retry; | |
666 | } | |
667 | } | |
668 | ||
669 | if (! NILP (delayed_switch_frame)) | |
670 | unread_switch_frame = delayed_switch_frame; | |
671 | ||
67868d27 PJ |
672 | #if 0 |
673 | ||
5dbf89bc | 674 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
675 | if (display_hourglass_p) |
676 | start_hourglass (); | |
5dbf89bc | 677 | #endif |
67868d27 PJ |
678 | |
679 | #endif | |
680 | ||
f42be754 | 681 | return val; |
f42be754 JB |
682 | } |
683 | ||
50e48299 | 684 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
685 | doc: /* Read a character from the command input (keyboard or macro). |
686 | It is returned as a number. | |
fb26c2af KH |
687 | If the character has modifiers, they are resolved and reflected to the |
688 | character code if possible (e.g. C-SPC -> 0). | |
689 | ||
5de38842 PJ |
690 | If the user generates an event which is not a character (i.e. a mouse |
691 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
692 | exception, switch-frame events are put off until non-character events |
693 | can be read. | |
5de38842 PJ |
694 | If you want to read non-character events, or ignore them, call |
695 | `read-event' or `read-char-exclusive' instead. | |
696 | ||
697 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
698 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
699 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
700 | is used for reading a character. |
701 | If the optional argument SECONDS is non-nil, it should be a number | |
702 | specifying the maximum number of seconds to wait for input. If no | |
703 | input arrives in that time, return nil. SECONDS may be a | |
704 | floating-point value. */) | |
5842a27b | 705 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 706 | { |
fb26c2af | 707 | Lisp_Object val; |
fb26c2af | 708 | |
bb49a192 RS |
709 | if (! NILP (prompt)) |
710 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 711 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
712 | |
713 | return (NILP (val) ? Qnil | |
714 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
715 | } |
716 | ||
50e48299 | 717 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
718 | doc: /* Read an event object from the input stream. |
719 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
720 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
721 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
722 | is used for reading a character. |
723 | If the optional argument SECONDS is non-nil, it should be a number | |
724 | specifying the maximum number of seconds to wait for input. If no | |
725 | input arrives in that time, return nil. SECONDS may be a | |
726 | floating-point value. */) | |
5842a27b | 727 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 728 | { |
bb49a192 RS |
729 | if (! NILP (prompt)) |
730 | message_with_string ("%s", prompt, 0); | |
50e48299 | 731 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
732 | } |
733 | ||
50e48299 | 734 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
735 | doc: /* Read a character from the command input (keyboard or macro). |
736 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
737 | If the character has modifiers, they are resolved and reflected to the |
738 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
739 | |
740 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
741 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
742 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
743 | is used for reading a character. |
744 | If the optional argument SECONDS is non-nil, it should be a number | |
745 | specifying the maximum number of seconds to wait for input. If no | |
746 | input arrives in that time, return nil. SECONDS may be a | |
747 | floating-point value. */) | |
5842a27b | 748 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 749 | { |
fb26c2af | 750 | Lisp_Object val; |
fb26c2af | 751 | |
bb49a192 RS |
752 | if (! NILP (prompt)) |
753 | message_with_string ("%s", prompt, 0); | |
66c410ce | 754 | |
fb26c2af | 755 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
756 | |
757 | return (NILP (val) ? Qnil | |
758 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 759 | } |
078e7b4a JB |
760 | |
761 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 | 762 | doc: /* Don't use this yourself. */) |
5842a27b | 763 | (void) |
078e7b4a JB |
764 | { |
765 | register Lisp_Object val; | |
66cd0949 | 766 | BLOCK_INPUT; |
1805de4f | 767 | XSETINT (val, getc (instream)); |
66cd0949 | 768 | UNBLOCK_INPUT; |
078e7b4a JB |
769 | return val; |
770 | } | |
da84f340 GM |
771 | |
772 | ||
550a625e | 773 | \f |
b9598260 SM |
774 | |
775 | /* Return true if the lisp code read using READCHARFUN defines a non-nil | |
776 | `lexical-binding' file variable. After returning, the stream is | |
777 | positioned following the first line, if it is a comment, otherwise | |
778 | nothing is read. */ | |
779 | ||
780 | static int | |
c566235d | 781 | lisp_file_lexically_bound_p (Lisp_Object readcharfun) |
b9598260 SM |
782 | { |
783 | int ch = READCHAR; | |
784 | if (ch != ';') | |
785 | /* The first line isn't a comment, just give up. */ | |
786 | { | |
787 | UNREAD (ch); | |
788 | return 0; | |
789 | } | |
790 | else | |
791 | /* Look for an appropriate file-variable in the first line. */ | |
792 | { | |
793 | int rv = 0; | |
794 | enum { | |
795 | NOMINAL, AFTER_FIRST_DASH, AFTER_ASTERIX, | |
796 | } beg_end_state = NOMINAL; | |
797 | int in_file_vars = 0; | |
798 | ||
799 | #define UPDATE_BEG_END_STATE(ch) \ | |
800 | if (beg_end_state == NOMINAL) \ | |
801 | beg_end_state = (ch == '-' ? AFTER_FIRST_DASH : NOMINAL); \ | |
802 | else if (beg_end_state == AFTER_FIRST_DASH) \ | |
803 | beg_end_state = (ch == '*' ? AFTER_ASTERIX : NOMINAL); \ | |
804 | else if (beg_end_state == AFTER_ASTERIX) \ | |
805 | { \ | |
806 | if (ch == '-') \ | |
807 | in_file_vars = !in_file_vars; \ | |
808 | beg_end_state = NOMINAL; \ | |
809 | } | |
810 | ||
811 | /* Skip until we get to the file vars, if any. */ | |
812 | do | |
813 | { | |
814 | ch = READCHAR; | |
815 | UPDATE_BEG_END_STATE (ch); | |
816 | } | |
817 | while (!in_file_vars && ch != '\n' && ch != EOF); | |
818 | ||
819 | while (in_file_vars) | |
820 | { | |
821 | char var[100], *var_end, val[100], *val_end; | |
822 | ||
823 | ch = READCHAR; | |
824 | ||
825 | /* Read a variable name. */ | |
826 | while (ch == ' ' || ch == '\t') | |
827 | ch = READCHAR; | |
828 | ||
829 | var_end = var; | |
830 | while (ch != ':' && ch != '\n' && ch != EOF) | |
831 | { | |
832 | if (var_end < var + sizeof var - 1) | |
833 | *var_end++ = ch; | |
834 | UPDATE_BEG_END_STATE (ch); | |
835 | ch = READCHAR; | |
836 | } | |
837 | ||
838 | while (var_end > var | |
839 | && (var_end[-1] == ' ' || var_end[-1] == '\t')) | |
840 | var_end--; | |
841 | *var_end = '\0'; | |
842 | ||
843 | if (ch == ':') | |
844 | { | |
845 | /* Read a variable value. */ | |
846 | ch = READCHAR; | |
847 | ||
848 | while (ch == ' ' || ch == '\t') | |
849 | ch = READCHAR; | |
850 | ||
851 | val_end = val; | |
852 | while (ch != ';' && ch != '\n' && ch != EOF && in_file_vars) | |
853 | { | |
854 | if (val_end < val + sizeof val - 1) | |
855 | *val_end++ = ch; | |
856 | UPDATE_BEG_END_STATE (ch); | |
857 | ch = READCHAR; | |
858 | } | |
859 | if (! in_file_vars) | |
860 | /* The value was terminated by an end-marker, which | |
861 | remove. */ | |
862 | val_end -= 3; | |
863 | while (val_end > val | |
864 | && (val_end[-1] == ' ' || val_end[-1] == '\t')) | |
865 | val_end--; | |
866 | *val_end = '\0'; | |
867 | ||
868 | if (strcmp (var, "lexical-binding") == 0) | |
869 | /* This is it... */ | |
870 | { | |
871 | rv = (strcmp (val, "nil") != 0); | |
872 | break; | |
873 | } | |
874 | } | |
875 | } | |
876 | ||
877 | while (ch != '\n' && ch != EOF) | |
878 | ch = READCHAR; | |
879 | ||
880 | return rv; | |
881 | } | |
882 | } | |
883 | ||
884 | \f | |
8792be66 | 885 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 886 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
887 | safe to load. Only files compiled with Emacs are safe to load. |
888 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
889 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
890 | |
891 | static int | |
971de7fb | 892 | safe_to_load_p (int fd) |
da84f340 GM |
893 | { |
894 | char buf[512]; | |
895 | int nbytes, i; | |
896 | int safe_p = 1; | |
8f924df7 | 897 | int version = 1; |
da84f340 GM |
898 | |
899 | /* Read the first few bytes from the file, and look for a line | |
900 | specifying the byte compiler version used. */ | |
901 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
902 | if (nbytes > 0) | |
903 | { | |
904 | buf[nbytes] = '\0'; | |
905 | ||
906 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 907 | with NUL bytes following it, but note the version. */ |
da84f340 | 908 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 909 | if (i == 4) |
8792be66 | 910 | version = buf[i]; |
da84f340 | 911 | |
927f12da KH |
912 | if (i == nbytes |
913 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
914 | buf + i) < 0) |
915 | safe_p = 0; | |
916 | } | |
1da3b9e4 DL |
917 | if (safe_p) |
918 | safe_p = version; | |
da84f340 GM |
919 | |
920 | lseek (fd, 0, SEEK_SET); | |
921 | return safe_p; | |
922 | } | |
923 | ||
924 | ||
7ee3bd7b GM |
925 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
926 | after loading a file successfully. */ | |
927 | ||
928 | static Lisp_Object | |
971de7fb | 929 | record_load_unwind (Lisp_Object old) |
7ee3bd7b GM |
930 | { |
931 | return Vloads_in_progress = old; | |
932 | } | |
933 | ||
164c8bfe RS |
934 | /* This handler function is used via internal_condition_case_1. */ |
935 | ||
936 | static Lisp_Object | |
971de7fb | 937 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
938 | { |
939 | return Qnil; | |
940 | } | |
7ee3bd7b | 941 | |
1d064697 | 942 | static Lisp_Object |
971de7fb | 943 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
944 | { |
945 | if (!NILP (Vold_style_backquotes)) | |
946 | { | |
b636b4c1 | 947 | Lisp_Object args[2]; |
18a4a65e | 948 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
949 | args[1] = file; |
950 | Fmessage (2, args); | |
951 | } | |
952 | return Qnil; | |
953 | } | |
954 | ||
971a4293 LT |
955 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
956 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
957 | required. | |
958 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
5842a27b | 959 | (void) |
971a4293 LT |
960 | { |
961 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
962 | while (CONSP (suffixes)) | |
963 | { | |
964 | Lisp_Object exts = Vload_file_rep_suffixes; | |
965 | suffix = XCAR (suffixes); | |
966 | suffixes = XCDR (suffixes); | |
967 | while (CONSP (exts)) | |
968 | { | |
969 | ext = XCAR (exts); | |
970 | exts = XCDR (exts); | |
971 | lst = Fcons (concat2 (suffix, ext), lst); | |
972 | } | |
973 | } | |
974 | return Fnreverse (lst); | |
975 | } | |
976 | ||
f0a50954 | 977 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
978 | doc: /* Execute a file of Lisp code named FILE. |
979 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 980 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 981 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 982 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 983 | This function searches the directories in `load-path'. |
971a4293 | 984 | |
5de38842 | 985 | If optional second arg NOERROR is non-nil, |
971a4293 | 986 | report no error if FILE doesn't exist. |
5de38842 | 987 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
988 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
989 | overrides that). | |
5de38842 | 990 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 991 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 992 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
993 | the suffix `.elc' or `.el'; don't accept just FILE unless |
994 | it ends in one of those suffixes or includes a directory name. | |
995 | ||
996 | If this function fails to find a file, it may look for different | |
997 | representations of that file before trying another file. | |
998 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
999 | to the file name. Emacs uses this feature mainly to find compressed | |
1000 | versions of files when Auto Compression mode is enabled. | |
1001 | ||
1002 | The exact suffixes that this function tries out, in the exact order, | |
1003 | are given by the value of the variable `load-file-rep-suffixes' if | |
1004 | NOSUFFIX is non-nil and by the return value of the function | |
1005 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
1006 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
1007 | and then the former. | |
0fc213e9 RS |
1008 | |
1009 | Loading a file records its definitions, and its `provide' and | |
1010 | `require' calls, in an element of `load-history' whose | |
1011 | car is the file name loaded. See `load-history'. | |
1012 | ||
c7926fe2 EZ |
1013 | While the file is in the process of being loaded, the variable |
1014 | `load-in-progress' is non-nil and the variable `load-file-name' | |
1015 | is bound to the file's name. | |
1016 | ||
971a4293 | 1017 | Return t if the file exists and loads successfully. */) |
5842a27b | 1018 | (Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage, Lisp_Object nosuffix, Lisp_Object must_suffix) |
078e7b4a JB |
1019 | { |
1020 | register FILE *stream; | |
1021 | register int fd = -1; | |
aed13378 | 1022 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
1023 | struct gcpro gcpro1, gcpro2, gcpro3; |
1024 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
1025 | /* 1 means we printed the ".el is newer" message. */ |
1026 | int newer = 0; | |
1027 | /* 1 means we are loading a compiled file. */ | |
1028 | int compiled = 0; | |
c2225d00 | 1029 | Lisp_Object handler; |
456c67a4 | 1030 | int safe_p = 1; |
8ea90aa3 | 1031 | const char *fmode = "r"; |
6bb6da3e | 1032 | Lisp_Object tmp[2]; |
8792be66 KH |
1033 | int version; |
1034 | ||
317073d5 | 1035 | #ifdef DOS_NT |
229ba775 | 1036 | fmode = "rt"; |
317073d5 | 1037 | #endif /* DOS_NT */ |
078e7b4a | 1038 | |
b7826503 | 1039 | CHECK_STRING (file); |
078e7b4a | 1040 | |
c2225d00 | 1041 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1042 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1043 | handler = Ffind_file_name_handler (file, Qload); | |
1044 | if (!NILP (handler)) | |
1045 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1046 | |
07a0bda3 RS |
1047 | /* Do this after the handler to avoid |
1048 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1049 | (Below here, we care only whether they are nil or not.) |
1050 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1051 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1052 | everywhere, it accidentally stayed here. Since then, enough people |
1053 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1054 | that it seemed risky to remove. */ | |
164c8bfe RS |
1055 | if (! NILP (noerror)) |
1056 | { | |
1057 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1058 | Qt, load_error_handler); | |
1059 | if (NILP (file)) | |
1060 | return Qnil; | |
1061 | } | |
1062 | else | |
1063 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1064 | |
07a0bda3 | 1065 | |
078e7b4a JB |
1066 | /* Avoid weird lossage with null string as arg, |
1067 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 1068 | if (SCHARS (file) > 0) |
078e7b4a | 1069 | { |
d5db4077 | 1070 | int size = SBYTES (file); |
211f7dcd | 1071 | |
0fc213e9 RS |
1072 | found = Qnil; |
1073 | GCPRO2 (file, found); | |
211f7dcd RS |
1074 | |
1075 | if (! NILP (must_suffix)) | |
1076 | { | |
1077 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1078 | if (size > 3 | |
42a5b22f | 1079 | && !strcmp (SSDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1080 | must_suffix = Qnil; |
1081 | else if (size > 4 | |
42a5b22f | 1082 | && !strcmp (SSDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1083 | must_suffix = Qnil; |
1084 | /* Don't insist on adding a suffix | |
1085 | if the argument includes a directory name. */ | |
1086 | else if (! NILP (Ffile_name_directory (file))) | |
1087 | must_suffix = Qnil; | |
1088 | } | |
1089 | ||
f0a50954 | 1090 | fd = openp (Vload_path, file, |
e61b9b87 | 1091 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1092 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1093 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1094 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1095 | tmp))), |
86d00812 | 1096 | &found, Qnil); |
5a6e5452 | 1097 | UNGCPRO; |
078e7b4a JB |
1098 | } |
1099 | ||
96dc0f4e | 1100 | if (fd == -1) |
078e7b4a | 1101 | { |
265a9e55 | 1102 | if (NILP (noerror)) |
336d4a9c KS |
1103 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1104 | return Qnil; | |
078e7b4a JB |
1105 | } |
1106 | ||
ba0d1195 | 1107 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1108 | if (EQ (Qt, Vuser_init_file)) |
1109 | Vuser_init_file = found; | |
1110 | ||
96dc0f4e MB |
1111 | /* If FD is -2, that means openp found a magic file. */ |
1112 | if (fd == -2) | |
74549846 | 1113 | { |
5e24a1f7 KH |
1114 | if (NILP (Fequal (found, file))) |
1115 | /* If FOUND is a different file name from FILE, | |
1116 | find its handler even if we have already inhibited | |
1117 | the `load' operation on FILE. */ | |
1118 | handler = Ffind_file_name_handler (found, Qt); | |
1119 | else | |
1120 | handler = Ffind_file_name_handler (found, Qload); | |
1121 | if (! NILP (handler)) | |
1122 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1123 | } |
1124 | ||
550a625e GM |
1125 | /* Check if we're stuck in a recursive load cycle. |
1126 | ||
1127 | 2000-09-21: It's not possible to just check for the file loaded | |
1128 | being a member of Vloads_in_progress. This fails because of the | |
1129 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1130 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1131 | leads to a certain amount of ``normal'' recursion. |
1132 | ||
1133 | Also, just loading a file recursively is not always an error in | |
1134 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1135 | { |
1136 | int count = 0; | |
1137 | Lisp_Object tem; | |
1138 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
8fc45744 JB |
1139 | if (!NILP (Fequal (found, XCAR (tem))) && (++count > 3)) |
1140 | { | |
1141 | if (fd >= 0) | |
1142 | emacs_close (fd); | |
1143 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1144 | } | |
3ba6fd9a RS |
1145 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1146 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1147 | } | |
7ee3bd7b | 1148 | |
b9598260 SM |
1149 | /* All loads are by default dynamic, unless the file itself specifies |
1150 | otherwise using a file-variable in the first line. This is bound here | |
1151 | so that it takes effect whether or not we use | |
1152 | Vload_source_file_function. */ | |
1153 | specbind (Qlexical_binding, Qnil); | |
1154 | ||
6bb6da3e AM |
1155 | /* Get the name for load-history. */ |
1156 | hist_file_name = (! NILP (Vpurify_flag) | |
1157 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1158 | tmp[1] = Ffile_name_nondirectory (found), | |
1159 | tmp)) | |
1160 | : found) ; | |
1161 | ||
8792be66 | 1162 | version = -1; |
1bb9a689 | 1163 | |
88852d45 | 1164 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1165 | specbind (Qold_style_backquotes, Qnil); |
1166 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1167 | ||
72af86bd | 1168 | if (!memcmp (SDATA (found) + SBYTES (found) - 4, ".elc", 4) |
74327f7a | 1169 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1170 | /* Load .elc files directly, but not when they are |
1171 | remote and have no handler! */ | |
078e7b4a | 1172 | { |
96dc0f4e | 1173 | if (fd != -2) |
da84f340 | 1174 | { |
96dc0f4e MB |
1175 | struct stat s1, s2; |
1176 | int result; | |
da84f340 | 1177 | |
6bb6da3e | 1178 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1179 | |
8792be66 KH |
1180 | if (version < 0 |
1181 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1182 | { |
1183 | safe_p = 0; | |
1184 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1185 | { |
1186 | if (fd >= 0) | |
1187 | emacs_close (fd); | |
1188 | error ("File `%s' was not compiled in Emacs", | |
1189 | SDATA (found)); | |
1190 | } | |
beb0b7f9 | 1191 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1192 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1193 | } | |
04fc68e7 | 1194 | |
96dc0f4e MB |
1195 | compiled = 1; |
1196 | ||
eb191db2 EZ |
1197 | efound = ENCODE_FILE (found); |
1198 | ||
26fbf20b | 1199 | #ifdef DOS_NT |
96dc0f4e | 1200 | fmode = "rb"; |
26fbf20b | 1201 | #endif /* DOS_NT */ |
51b59d79 | 1202 | stat (SSDATA (efound), &s1); |
a1c89c0a | 1203 | SSET (efound, SBYTES (efound) - 1, 0); |
51b59d79 | 1204 | result = stat (SSDATA (efound), &s2); |
a1c89c0a | 1205 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1206 | |
96dc0f4e MB |
1207 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1208 | { | |
1209 | /* Make the progress messages mention that source is newer. */ | |
1210 | newer = 1; | |
04fc68e7 | 1211 | |
96dc0f4e | 1212 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1213 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1214 | { |
0fc213e9 RS |
1215 | Lisp_Object msg_file; |
1216 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1217 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1218 | msg_file, 1); |
714d8c39 | 1219 | } |
96dc0f4e | 1220 | } |
0fc213e9 | 1221 | UNGCPRO; |
51ac6f83 | 1222 | } |
078e7b4a | 1223 | } |
fe0e03f3 KH |
1224 | else |
1225 | { | |
1226 | /* We are loading a source file (*.el). */ | |
1227 | if (!NILP (Vload_source_file_function)) | |
1228 | { | |
7ee3bd7b | 1229 | Lisp_Object val; |
96dc0f4e MB |
1230 | |
1231 | if (fd >= 0) | |
68c45bf0 | 1232 | emacs_close (fd); |
6bb6da3e | 1233 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1234 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1235 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1236 | return unbind_to (count, val); |
fe0e03f3 KH |
1237 | } |
1238 | } | |
078e7b4a | 1239 | |
6bb6da3e | 1240 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1241 | |
229ba775 | 1242 | #ifdef WINDOWSNT |
68c45bf0 | 1243 | emacs_close (fd); |
eb191db2 | 1244 | efound = ENCODE_FILE (found); |
51b59d79 | 1245 | stream = fopen (SSDATA (efound), fmode); |
229ba775 EZ |
1246 | #else /* not WINDOWSNT */ |
1247 | stream = fdopen (fd, fmode); | |
1248 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1249 | if (stream == 0) |
1250 | { | |
68c45bf0 | 1251 | emacs_close (fd); |
d5db4077 | 1252 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1253 | } |
1254 | ||
4b104c41 | 1255 | if (! NILP (Vpurify_flag)) |
ca0a881a | 1256 | Vpreloaded_file_list = Fcons (Fpurecopy(file), Vpreloaded_file_list); |
4b104c41 | 1257 | |
beb0b7f9 | 1258 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1259 | { |
da84f340 GM |
1260 | if (!safe_p) |
1261 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1262 | file, 1); | |
1263 | else if (!compiled) | |
e28552a4 | 1264 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1265 | else if (newer) |
e28552a4 RS |
1266 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1267 | file, 1); | |
db5cae4b | 1268 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1269 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1270 | } |
078e7b4a | 1271 | |
c04d9e70 | 1272 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1273 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1274 | specbind (Qload_file_name, found); |
74549846 | 1275 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1276 | load_descriptor_list |
1277 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
b9598260 | 1278 | |
2baf5e76 | 1279 | specbind (Qload_in_progress, Qt); |
b9598260 SM |
1280 | |
1281 | instream = stream; | |
1282 | if (lisp_file_lexically_bound_p (Qget_file_char)) | |
1283 | Fset (Qlexical_binding, Qt); | |
1284 | ||
ab2a47e1 | 1285 | if (! version || version >= 22) |
b883cdb2 | 1286 | readevalloop (Qget_file_char, stream, hist_file_name, |
defb1411 | 1287 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1288 | else |
1289 | { | |
1290 | /* We can't handle a file which was compiled with | |
1291 | byte-compile-dynamic by older version of Emacs. */ | |
1292 | specbind (Qload_force_doc_strings, Qt); | |
defb1411 | 1293 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, |
768d4533 | 1294 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1295 | } |
078e7b4a JB |
1296 | unbind_to (count, Qnil); |
1297 | ||
6bb6da3e | 1298 | /* Run any eval-after-load forms for this file */ |
428b13d6 | 1299 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1300 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1301 | ||
078e7b4a JB |
1302 | UNGCPRO; |
1303 | ||
97dead2d | 1304 | xfree (saved_doc_string); |
b2a30870 RS |
1305 | saved_doc_string = 0; |
1306 | saved_doc_string_size = 0; | |
1307 | ||
70fdbb46 | 1308 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1309 | prev_saved_doc_string = 0; |
1310 | prev_saved_doc_string_size = 0; | |
1311 | ||
beb0b7f9 | 1312 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1313 | { |
da84f340 GM |
1314 | if (!safe_p) |
1315 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1316 | file, 1); | |
1317 | else if (!compiled) | |
e28552a4 | 1318 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1319 | else if (newer) |
e28552a4 RS |
1320 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1321 | file, 1); | |
db5cae4b | 1322 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1323 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1324 | } |
7ee3bd7b | 1325 | |
078e7b4a JB |
1326 | return Qt; |
1327 | } | |
1328 | ||
1329 | static Lisp_Object | |
971de7fb | 1330 | load_unwind (Lisp_Object arg) /* used as unwind-protect function in load */ |
078e7b4a | 1331 | { |
ebfe97a2 KS |
1332 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1333 | if (stream != NULL) | |
66cd0949 YM |
1334 | { |
1335 | BLOCK_INPUT; | |
1336 | fclose (stream); | |
1337 | UNBLOCK_INPUT; | |
1338 | } | |
078e7b4a JB |
1339 | return Qnil; |
1340 | } | |
1341 | ||
d2c6be7f | 1342 | static Lisp_Object |
971de7fb | 1343 | load_descriptor_unwind (Lisp_Object oldlist) |
d2c6be7f RS |
1344 | { |
1345 | load_descriptor_list = oldlist; | |
838abf56 | 1346 | return Qnil; |
d2c6be7f RS |
1347 | } |
1348 | ||
1349 | /* Close all descriptors in use for Floads. | |
1350 | This is used when starting a subprocess. */ | |
1351 | ||
1352 | void | |
971de7fb | 1353 | close_load_descs (void) |
d2c6be7f | 1354 | { |
f3849f25 | 1355 | #ifndef WINDOWSNT |
d2c6be7f | 1356 | Lisp_Object tail; |
9beb8baa | 1357 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1358 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1359 | #endif |
d2c6be7f | 1360 | } |
078e7b4a JB |
1361 | \f |
1362 | static int | |
971de7fb | 1363 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1364 | { |
4b2dd274 | 1365 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1366 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1367 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1368 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1369 | } |
1370 | ||
86d00812 SM |
1371 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1372 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1373 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1374 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1375 | file name when searching. | |
1376 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1377 | PREDICATE can also be an integer to pass to the access(2) function, | |
aa56f361 SM |
1378 | in which case file-name-handlers are ignored. |
1379 | This function will normally skip directories, so if you want it to find | |
1380 | directories, make sure the PREDICATE function returns `dir-ok' for them. */) | |
5842a27b | 1381 | (Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate) |
86d00812 SM |
1382 | { |
1383 | Lisp_Object file; | |
1384 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1385 | if (NILP (predicate) && fd > 0) | |
1386 | close (fd); | |
1387 | return file; | |
1388 | } | |
1389 | ||
aa56f361 | 1390 | static Lisp_Object Qdir_ok; |
86d00812 | 1391 | |
078e7b4a JB |
1392 | /* Search for a file whose name is STR, looking in directories |
1393 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1394 | On success, returns a file descriptor. On failure, returns -1. |
1395 | ||
e61b9b87 | 1396 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1397 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1398 | |
86d00812 SM |
1399 | PREDICATE non-nil means don't open the files, |
1400 | just look for one that satisfies the predicate. In this case, | |
1401 | returns 1 on success. The predicate can be a lisp function or | |
1402 | an integer to pass to `access' (in which case file-name-handlers | |
1403 | are ignored). | |
078e7b4a JB |
1404 | |
1405 | If STOREPTR is nonzero, it points to a slot where the name of | |
1406 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1407 | nil is stored there on failure. |
1408 | ||
96dc0f4e | 1409 | If the file we find is remote, return -2 |
86d00812 | 1410 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1411 | |
1412 | int | |
971de7fb | 1413 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate) |
078e7b4a JB |
1414 | { |
1415 | register int fd; | |
1416 | int fn_size = 100; | |
1417 | char buf[100]; | |
1418 | register char *fn = buf; | |
1419 | int absolute = 0; | |
1420 | int want_size; | |
74549846 | 1421 | Lisp_Object filename; |
078e7b4a | 1422 | struct stat st; |
eb191db2 EZ |
1423 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1424 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1425 | int max_suffix_len = 0; |
1426 | ||
6f8eafd1 SM |
1427 | CHECK_STRING (str); |
1428 | ||
e61b9b87 SM |
1429 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1430 | { | |
f5df591a | 1431 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1432 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1433 | SBYTES (XCAR (tail))); |
e61b9b87 | 1434 | } |
078e7b4a | 1435 | |
8b9d426a | 1436 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1437 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1438 | ||
078e7b4a JB |
1439 | if (storeptr) |
1440 | *storeptr = Qnil; | |
1441 | ||
1442 | if (complete_filename_p (str)) | |
1443 | absolute = 1; | |
1444 | ||
e61b9b87 | 1445 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1446 | { |
e61b9b87 | 1447 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1448 | if (!complete_filename_p (filename)) |
1449 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1450 | /* Of course, this could conceivably lose if luser sets | |
1451 | default-directory to be something non-absolute... */ | |
1452 | { | |
4b4deea2 | 1453 | filename = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
078e7b4a JB |
1454 | if (!complete_filename_p (filename)) |
1455 | /* Give up on this path element! */ | |
1456 | continue; | |
1457 | } | |
1458 | ||
1459 | /* Calculate maximum size of any filename made from | |
1460 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1461 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1462 | if (fn_size < want_size) |
1463 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1464 | ||
078e7b4a | 1465 | /* Loop over suffixes. */ |
a74d1c97 | 1466 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1467 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1468 | { |
d5db4077 | 1469 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1470 | Lisp_Object handler; |
eb191db2 | 1471 | int exists; |
078e7b4a | 1472 | |
c49afcd7 RS |
1473 | /* Concatenate path element/specified name with the suffix. |
1474 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1475 | if (SCHARS (filename) > 2 |
1476 | && SREF (filename, 0) == '/' | |
1477 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1478 | { |
42a5b22f | 1479 | strncpy (fn, SSDATA (filename) + 2, |
d5db4077 KR |
1480 | SBYTES (filename) - 2); |
1481 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1482 | } |
1483 | else | |
1484 | { | |
42a5b22f | 1485 | strncpy (fn, SSDATA (filename), |
d5db4077 KR |
1486 | SBYTES (filename)); |
1487 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1488 | } |
1489 | ||
078e7b4a | 1490 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
42a5b22f | 1491 | strncat (fn, SSDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1492 | |
74549846 | 1493 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1494 | /* We used to only check for handlers on non-absolute file names: |
1495 | if (absolute) | |
1496 | handler = Qnil; | |
1497 | else | |
1498 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1499 | It's not clear why that was the case and it breaks things like | |
1500 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1501 | string = build_string (fn); |
4773b8ca | 1502 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1503 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1504 | { | |
1505 | if (NILP (predicate)) | |
1506 | exists = !NILP (Ffile_readable_p (string)); | |
1507 | else | |
aa56f361 SM |
1508 | { |
1509 | Lisp_Object tmp = call1 (predicate, string); | |
1510 | exists = !NILP (tmp) | |
1511 | && (EQ (tmp, Qdir_ok) | |
1512 | || !NILP (Ffile_directory_p (string))); | |
1513 | } | |
74549846 RS |
1514 | |
1515 | if (exists) | |
078e7b4a JB |
1516 | { |
1517 | /* We succeeded; return this descriptor and filename. */ | |
1518 | if (storeptr) | |
eb191db2 | 1519 | *storeptr = string; |
5ef2a3c0 | 1520 | UNGCPRO; |
96dc0f4e | 1521 | return -2; |
74549846 RS |
1522 | } |
1523 | } | |
1524 | else | |
1525 | { | |
4b2dd274 | 1526 | const char *pfn; |
eb191db2 EZ |
1527 | |
1528 | encoded_fn = ENCODE_FILE (string); | |
42a5b22f | 1529 | pfn = SSDATA (encoded_fn); |
eb191db2 EZ |
1530 | exists = (stat (pfn, &st) >= 0 |
1531 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1532 | if (exists) |
1533 | { | |
1534 | /* Check that we can access or open it. */ | |
86d00812 SM |
1535 | if (NATNUMP (predicate)) |
1536 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1537 | else |
eb191db2 | 1538 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1539 | |
1540 | if (fd >= 0) | |
1541 | { | |
1542 | /* We succeeded; return this descriptor and filename. */ | |
1543 | if (storeptr) | |
eb191db2 | 1544 | *storeptr = string; |
74549846 RS |
1545 | UNGCPRO; |
1546 | return fd; | |
1547 | } | |
078e7b4a JB |
1548 | } |
1549 | } | |
078e7b4a | 1550 | } |
5a6e5452 | 1551 | if (absolute) |
5ef2a3c0 | 1552 | break; |
078e7b4a JB |
1553 | } |
1554 | ||
5ef2a3c0 KH |
1555 | UNGCPRO; |
1556 | return -1; | |
078e7b4a JB |
1557 | } |
1558 | ||
1559 | \f | |
ae321d28 RS |
1560 | /* Merge the list we've accumulated of globals from the current input source |
1561 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1562 | the source has an associated file name or not. |
1563 | ||
1564 | FILENAME is the file name that we are loading from. | |
1565 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1566 | |
1567 | static void | |
971de7fb | 1568 | build_load_history (Lisp_Object filename, int entire) |
ae321d28 RS |
1569 | { |
1570 | register Lisp_Object tail, prev, newelt; | |
1571 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1572 | register int foundit = 0; |
ae321d28 RS |
1573 | |
1574 | tail = Vload_history; | |
1575 | prev = Qnil; | |
b502a9a1 | 1576 | |
86d00812 | 1577 | while (CONSP (tail)) |
ae321d28 | 1578 | { |
86d00812 | 1579 | tem = XCAR (tail); |
ae321d28 RS |
1580 | |
1581 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1582 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1583 | { |
1584 | foundit = 1; | |
1585 | ||
b502a9a1 RS |
1586 | /* If we're loading the entire file, remove old data. */ |
1587 | if (entire) | |
86d00812 | 1588 | { |
ae321d28 | 1589 | if (NILP (prev)) |
86d00812 | 1590 | Vload_history = XCDR (tail); |
ae321d28 | 1591 | else |
86d00812 | 1592 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1593 | } |
1594 | ||
1595 | /* Otherwise, cons on new symbols that are not already members. */ | |
1596 | else | |
1597 | { | |
1598 | tem2 = Vcurrent_load_list; | |
1599 | ||
1600 | while (CONSP (tem2)) | |
1601 | { | |
86d00812 | 1602 | newelt = XCAR (tem2); |
ae321d28 | 1603 | |
d642e4f9 | 1604 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1605 | Fsetcar (tail, Fcons (XCAR (tem), |
1606 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1607 | |
86d00812 | 1608 | tem2 = XCDR (tem2); |
ae321d28 RS |
1609 | QUIT; |
1610 | } | |
1611 | } | |
1612 | } | |
1613 | else | |
1614 | prev = tail; | |
86d00812 | 1615 | tail = XCDR (tail); |
ae321d28 RS |
1616 | QUIT; |
1617 | } | |
1618 | ||
b502a9a1 RS |
1619 | /* If we're loading an entire file, cons the new assoc onto the |
1620 | front of load-history, the most-recently-loaded position. Also | |
1621 | do this if we didn't find an existing member for the file. */ | |
1622 | if (entire || !foundit) | |
8a1f1537 RS |
1623 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1624 | Vload_history); | |
ae321d28 RS |
1625 | } |
1626 | ||
7d383292 | 1627 | static Lisp_Object |
971de7fb | 1628 | unreadpure (Lisp_Object junk) /* Used as unwind-protect function in readevalloop */ |
078e7b4a JB |
1629 | { |
1630 | read_pure = 0; | |
1631 | return Qnil; | |
1632 | } | |
1633 | ||
94e554db | 1634 | static Lisp_Object |
971de7fb | 1635 | readevalloop_1 (Lisp_Object old) |
94e554db RS |
1636 | { |
1637 | load_convert_to_unibyte = ! NILP (old); | |
1638 | return Qnil; | |
1639 | } | |
1640 | ||
9c97398c GM |
1641 | /* Signal an `end-of-file' error, if possible with file name |
1642 | information. */ | |
1643 | ||
1644 | static void | |
971de7fb | 1645 | end_of_file_error (void) |
9c97398c | 1646 | { |
9c97398c | 1647 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1648 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1649 | |
336d4a9c | 1650 | xsignal0 (Qend_of_file); |
9c97398c GM |
1651 | } |
1652 | ||
94e554db | 1653 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1654 | for this invocation. |
4c03c46d | 1655 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1656 | |
1657 | START, END specify region to read in current buffer (from eval-region). | |
1658 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1659 | |
078e7b4a | 1660 | static void |
dd4c5104 DN |
1661 | readevalloop (Lisp_Object readcharfun, |
1662 | FILE *stream, | |
1663 | Lisp_Object sourcename, | |
dd4c5104 DN |
1664 | int printflag, |
1665 | Lisp_Object unibyte, Lisp_Object readfun, | |
1666 | Lisp_Object start, Lisp_Object end) | |
078e7b4a JB |
1667 | { |
1668 | register int c; | |
1669 | register Lisp_Object val; | |
aed13378 | 1670 | int count = SPECPDL_INDEX (); |
0a37f512 | 1671 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1672 | struct buffer *b = 0; |
f38952fe | 1673 | int continue_reading_p; |
b9598260 | 1674 | Lisp_Object lex_bound; |
d11db2c8 RS |
1675 | /* Nonzero if reading an entire buffer. */ |
1676 | int whole_buffer = 0; | |
1677 | /* 1 on the first time around. */ | |
1678 | int first_sexp = 1; | |
1679 | ||
1680 | if (MARKERP (readcharfun)) | |
1681 | { | |
1682 | if (NILP (start)) | |
8878319c | 1683 | start = readcharfun; |
d11db2c8 | 1684 | } |
49cf7ff4 RS |
1685 | |
1686 | if (BUFFERP (readcharfun)) | |
1687 | b = XBUFFER (readcharfun); | |
1688 | else if (MARKERP (readcharfun)) | |
1689 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1690 | |
1ed7b9ae RS |
1691 | /* We assume START is nil when input is not from a buffer. */ |
1692 | if (! NILP (start) && !b) | |
1693 | abort (); | |
1694 | ||
0a37f512 | 1695 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1696 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1697 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1698 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1699 | |
b9598260 SM |
1700 | /* If lexical binding is active (either because it was specified in |
1701 | the file's header, or via a buffer-local variable), create an empty | |
1702 | lexical environment, otherwise, turn off lexical binding. */ | |
1703 | lex_bound = find_symbol_value (Qlexical_binding); | |
f07a954e SM |
1704 | specbind (Qinternal_interpreter_environment, |
1705 | NILP (lex_bound) || EQ (lex_bound, Qunbound) | |
1706 | ? Qnil : Fcons (Qt, Qnil)); | |
b9598260 | 1707 | |
0a37f512 | 1708 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1709 | |
6bb6da3e AM |
1710 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1711 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1712 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1713 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1714 | sourcename = call1 (Qfile_truename, sourcename) ; |
1715 | ||
ae321d28 RS |
1716 | LOADHIST_ATTACH (sourcename); |
1717 | ||
f38952fe GM |
1718 | continue_reading_p = 1; |
1719 | while (continue_reading_p) | |
078e7b4a | 1720 | { |
4c03c46d KS |
1721 | int count1 = SPECPDL_INDEX (); |
1722 | ||
4b4deea2 | 1723 | if (b != 0 && NILP (BVAR (b, name))) |
49cf7ff4 RS |
1724 | error ("Reading from killed buffer"); |
1725 | ||
4c03c46d KS |
1726 | if (!NILP (start)) |
1727 | { | |
721b7d9e | 1728 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1729 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1730 | set_buffer_internal (b); |
1731 | ||
1732 | /* Save point in it. */ | |
4c03c46d | 1733 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1734 | /* Save ZV in it. */ |
4c03c46d | 1735 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1736 | /* Those get unbound after we read one expression. */ |
1737 | ||
1738 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1739 | Fgoto_char (start); |
d11db2c8 RS |
1740 | if (!NILP (end)) |
1741 | Fnarrow_to_region (make_number (BEGV), end); | |
1742 | ||
1743 | /* Just for cleanliness, convert END to a marker | |
1744 | if it is an integer. */ | |
1745 | if (INTEGERP (end)) | |
1746 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1747 | } |
1748 | ||
d11db2c8 RS |
1749 | /* On the first cycle, we can easily test here |
1750 | whether we are reading the whole buffer. */ | |
1751 | if (b && first_sexp) | |
1752 | whole_buffer = (PT == BEG && ZV == Z); | |
1753 | ||
078e7b4a | 1754 | instream = stream; |
4c03c46d | 1755 | read_next: |
078e7b4a JB |
1756 | c = READCHAR; |
1757 | if (c == ';') | |
1758 | { | |
1759 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1760 | goto read_next; |
1761 | } | |
1762 | if (c < 0) | |
1763 | { | |
1764 | unbind_to (count1, Qnil); | |
1765 | break; | |
078e7b4a | 1766 | } |
6069d957 RS |
1767 | |
1768 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1769 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1770 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1771 | goto read_next; |
078e7b4a | 1772 | |
265a9e55 | 1773 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1774 | { |
1775 | record_unwind_protect (unreadpure, Qnil); | |
1776 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1777 | } |
1778 | else | |
1779 | { | |
1780 | UNREAD (c); | |
4ad679f9 | 1781 | read_objects = Qnil; |
f38952fe GM |
1782 | if (!NILP (readfun)) |
1783 | { | |
1784 | val = call1 (readfun, readcharfun); | |
1785 | ||
1786 | /* If READCHARFUN has set point to ZV, we should | |
1787 | stop reading, even if the form read sets point | |
1788 | to a different value when evaluated. */ | |
1789 | if (BUFFERP (readcharfun)) | |
1790 | { | |
1791 | struct buffer *b = XBUFFER (readcharfun); | |
1792 | if (BUF_PT (b) == BUF_ZV (b)) | |
1793 | continue_reading_p = 0; | |
1794 | } | |
1795 | } | |
976350af | 1796 | else if (! NILP (Vload_read_function)) |
84a15045 | 1797 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1798 | else |
abb13b09 | 1799 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1800 | } |
1801 | ||
4c03c46d KS |
1802 | if (!NILP (start) && continue_reading_p) |
1803 | start = Fpoint_marker (); | |
d11db2c8 RS |
1804 | |
1805 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1806 | unbind_to (count1, Qnil); |
1807 | ||
d11db2c8 | 1808 | /* Now eval what we just read. */ |
defb1411 | 1809 | val = eval_sub (val); |
f38952fe | 1810 | |
078e7b4a JB |
1811 | if (printflag) |
1812 | { | |
1813 | Vvalues = Fcons (val, Vvalues); | |
1814 | if (EQ (Vstandard_output, Qt)) | |
1815 | Fprin1 (val, Qnil); | |
1816 | else | |
1817 | Fprint (val, Qnil); | |
1818 | } | |
d11db2c8 RS |
1819 | |
1820 | first_sexp = 0; | |
078e7b4a JB |
1821 | } |
1822 | ||
8878319c | 1823 | build_load_history (sourcename, |
d11db2c8 | 1824 | stream || whole_buffer); |
b502a9a1 | 1825 | |
ae321d28 RS |
1826 | UNGCPRO; |
1827 | ||
078e7b4a JB |
1828 | unbind_to (count, Qnil); |
1829 | } | |
1830 | ||
1076254d | 1831 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1832 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1833 | When called from a Lisp program (i.e., not interactively), this |
1834 | function accepts up to five optional arguments: | |
5de38842 PJ |
1835 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1836 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1837 | A value of nil means discard it; anything else is stream for print. |
1838 | FILENAME specifies the file name to use for `load-history'. | |
1839 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1840 | invocation. | |
1841 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1842 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1843 | |
1844 | This function preserves the position of point. */) | |
5842a27b | 1845 | (Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print) |
228d4b1c | 1846 | { |
aed13378 | 1847 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1848 | Lisp_Object tem, buf; |
1849 | ||
9391b698 | 1850 | if (NILP (buffer)) |
228d4b1c JA |
1851 | buf = Fcurrent_buffer (); |
1852 | else | |
9391b698 | 1853 | buf = Fget_buffer (buffer); |
dfdb645c | 1854 | if (NILP (buf)) |
13febd85 | 1855 | error ("No such buffer"); |
228d4b1c | 1856 | |
1076254d | 1857 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1858 | tem = Qsymbolp; |
1859 | else | |
1860 | tem = printflag; | |
13febd85 RS |
1861 | |
1862 | if (NILP (filename)) | |
4b4deea2 | 1863 | filename = BVAR (XBUFFER (buf), filename); |
13febd85 | 1864 | |
3f39f996 | 1865 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c | 1866 | specbind (Qstandard_output, tem); |
b9598260 | 1867 | specbind (Qlexical_binding, Qnil); |
228d4b1c | 1868 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
bf1c0f27 | 1869 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
b9598260 SM |
1870 | if (lisp_file_lexically_bound_p (buf)) |
1871 | Fset (Qlexical_binding, Qt); | |
defb1411 | 1872 | readevalloop (buf, 0, filename, |
4c03c46d | 1873 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); |
cb09ab7a | 1874 | unbind_to (count, Qnil); |
228d4b1c JA |
1875 | |
1876 | return Qnil; | |
1877 | } | |
1878 | ||
976350af | 1879 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1880 | doc: /* Execute the region as Lisp code. |
1881 | When called from programs, expects two arguments, | |
1882 | giving starting and ending indices in the current buffer | |
1883 | of the text to be executed. | |
1884 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1885 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1886 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1887 | instead of `read' to read each expression. It gets one argument | |
1888 | which is the input stream for reading characters. | |
1889 | ||
1890 | This function does not move point. */) | |
5842a27b | 1891 | (Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function) |
078e7b4a | 1892 | { |
aed13378 | 1893 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1894 | Lisp_Object tem, cbuf; |
1895 | ||
1896 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1897 | |
265a9e55 | 1898 | if (NILP (printflag)) |
078e7b4a JB |
1899 | tem = Qsymbolp; |
1900 | else | |
1901 | tem = printflag; | |
1902 | specbind (Qstandard_output, tem); | |
3f39f996 | 1903 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1904 | |
4c03c46d | 1905 | /* readevalloop calls functions which check the type of start and end. */ |
f619ad4c | 1906 | readevalloop (cbuf, 0, BVAR (XBUFFER (cbuf), filename), |
4c03c46d KS |
1907 | !NILP (printflag), Qnil, read_function, |
1908 | start, end); | |
078e7b4a JB |
1909 | |
1910 | return unbind_to (count, Qnil); | |
1911 | } | |
1912 | ||
078e7b4a JB |
1913 | \f |
1914 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1915 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1916 | If STREAM is nil, use the value of `standard-input' (which see). | |
1917 | STREAM or the value of `standard-input' may be: | |
1918 | a buffer (read from point and advance it) | |
1919 | a marker (read from where it points and advance it) | |
1920 | a function (call it with no arguments for each character, | |
1921 | call it with a char as argument to push a char back) | |
1922 | a string (takes text from string, starting at the beginning) | |
1923 | t (read text line using minibuffer and use it, or read from | |
1924 | standard input in batch mode). */) | |
5842a27b | 1925 | (Lisp_Object stream) |
078e7b4a | 1926 | { |
5be02dff KH |
1927 | if (NILP (stream)) |
1928 | stream = Vstandard_input; | |
1929 | if (EQ (stream, Qt)) | |
1930 | stream = Qread_char; | |
5be02dff | 1931 | if (EQ (stream, Qread_char)) |
078e7b4a | 1932 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1933 | |
abb13b09 | 1934 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1935 | } |
1936 | ||
1937 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1938 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1939 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1940 | START and END optionally delimit a substring of STRING from which to read; | |
1941 | they default to 0 and (length STRING) respectively. */) | |
5842a27b | 1942 | (Lisp_Object string, Lisp_Object start, Lisp_Object end) |
078e7b4a | 1943 | { |
2530ceaf | 1944 | Lisp_Object ret; |
b7826503 | 1945 | CHECK_STRING (string); |
2530ceaf CW |
1946 | /* read_internal_start sets read_from_string_index. */ |
1947 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1948 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1949 | } |
078e7b4a | 1950 | |
abb13b09 CW |
1951 | /* Function to set up the global context we need in toplevel read |
1952 | calls. */ | |
1953 | static Lisp_Object | |
971de7fb | 1954 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
b8ce688b | 1955 | /* start, end only used when stream is a string. */ |
abb13b09 CW |
1956 | { |
1957 | Lisp_Object retval; | |
078e7b4a | 1958 | |
abb13b09 | 1959 | readchar_count = 0; |
17634846 | 1960 | new_backquote_flag = 0; |
4ad679f9 | 1961 | read_objects = Qnil; |
abb13b09 CW |
1962 | if (EQ (Vread_with_symbol_positions, Qt) |
1963 | || EQ (Vread_with_symbol_positions, stream)) | |
1964 | Vread_symbol_positions_list = Qnil; | |
1965 | ||
8f924df7 KH |
1966 | if (STRINGP (stream) |
1967 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 | 1968 | { |
da43f021 | 1969 | EMACS_INT startval, endval; |
8f924df7 | 1970 | Lisp_Object string; |
078e7b4a | 1971 | |
8f924df7 KH |
1972 | if (STRINGP (stream)) |
1973 | string = stream; | |
1974 | else | |
1975 | string = XCAR (stream); | |
078e7b4a | 1976 | |
abb13b09 | 1977 | if (NILP (end)) |
8f924df7 | 1978 | endval = SCHARS (string); |
abb13b09 CW |
1979 | else |
1980 | { | |
1981 | CHECK_NUMBER (end); | |
1982 | endval = XINT (end); | |
8f924df7 KH |
1983 | if (endval < 0 || endval > SCHARS (string)) |
1984 | args_out_of_range (string, end); | |
abb13b09 | 1985 | } |
17634846 | 1986 | |
abb13b09 CW |
1987 | if (NILP (start)) |
1988 | startval = 0; | |
1989 | else | |
1990 | { | |
1991 | CHECK_NUMBER (start); | |
1992 | startval = XINT (start); | |
1993 | if (startval < 0 || startval > endval) | |
8f924df7 | 1994 | args_out_of_range (string, start); |
abb13b09 CW |
1995 | } |
1996 | read_from_string_index = startval; | |
8f924df7 | 1997 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
1998 | read_from_string_limit = endval; |
1999 | } | |
177c0ea7 | 2000 | |
abb13b09 CW |
2001 | retval = read0 (stream); |
2002 | if (EQ (Vread_with_symbol_positions, Qt) | |
2003 | || EQ (Vread_with_symbol_positions, stream)) | |
2004 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
2005 | return retval; | |
078e7b4a JB |
2006 | } |
2007 | \f | |
336d4a9c KS |
2008 | |
2009 | /* Signal Qinvalid_read_syntax error. | |
2010 | S is error string of length N (if > 0) */ | |
2011 | ||
2012 | static void | |
971de7fb | 2013 | invalid_syntax (const char *s, int n) |
336d4a9c KS |
2014 | { |
2015 | if (!n) | |
2016 | n = strlen (s); | |
2017 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
2018 | } | |
2019 | ||
2020 | ||
6428369f KH |
2021 | /* Use this for recursive reads, in contexts where internal tokens |
2022 | are not allowed. */ | |
e28552a4 | 2023 | |
078e7b4a | 2024 | static Lisp_Object |
971de7fb | 2025 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
2026 | { |
2027 | register Lisp_Object val; | |
e28552a4 | 2028 | int c; |
078e7b4a | 2029 | |
17634846 | 2030 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2031 | if (!c) |
2032 | return val; | |
078e7b4a | 2033 | |
336d4a9c KS |
2034 | xsignal1 (Qinvalid_read_syntax, |
2035 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2036 | } |
2037 | \f | |
2038 | static int read_buffer_size; | |
2039 | static char *read_buffer; | |
2040 | ||
f6f79b37 | 2041 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2042 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2043 | |
078e7b4a | 2044 | static int |
971de7fb | 2045 | read_escape (Lisp_Object readcharfun, int stringp) |
078e7b4a JB |
2046 | { |
2047 | register int c = READCHAR; | |
9735b9ce | 2048 | /* \u allows up to four hex digits, \U up to eight. Default to the |
fffa137c | 2049 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 2050 | int unicode_hex_count = 4; |
f6f79b37 | 2051 | |
078e7b4a JB |
2052 | switch (c) |
2053 | { | |
f3849f25 | 2054 | case -1: |
da3b886d | 2055 | end_of_file_error (); |
f3849f25 | 2056 | |
078e7b4a | 2057 | case 'a': |
265a9e55 | 2058 | return '\007'; |
078e7b4a JB |
2059 | case 'b': |
2060 | return '\b'; | |
f405a585 RS |
2061 | case 'd': |
2062 | return 0177; | |
078e7b4a JB |
2063 | case 'e': |
2064 | return 033; | |
2065 | case 'f': | |
2066 | return '\f'; | |
2067 | case 'n': | |
2068 | return '\n'; | |
2069 | case 'r': | |
2070 | return '\r'; | |
2071 | case 't': | |
2072 | return '\t'; | |
2073 | case 'v': | |
2074 | return '\v'; | |
2075 | case '\n': | |
2076 | return -1; | |
e28552a4 | 2077 | case ' ': |
e7fc914b KH |
2078 | if (stringp) |
2079 | return -1; | |
2080 | return ' '; | |
078e7b4a JB |
2081 | |
2082 | case 'M': | |
2083 | c = READCHAR; | |
2084 | if (c != '-') | |
2085 | error ("Invalid escape character syntax"); | |
2086 | c = READCHAR; | |
2087 | if (c == '\\') | |
8792be66 | 2088 | c = read_escape (readcharfun, 0); |
7bd279cd | 2089 | return c | meta_modifier; |
f405a585 RS |
2090 | |
2091 | case 'S': | |
2092 | c = READCHAR; | |
2093 | if (c != '-') | |
2094 | error ("Invalid escape character syntax"); | |
2095 | c = READCHAR; | |
2096 | if (c == '\\') | |
8792be66 | 2097 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2098 | return c | shift_modifier; |
2099 | ||
2100 | case 'H': | |
2101 | c = READCHAR; | |
2102 | if (c != '-') | |
2103 | error ("Invalid escape character syntax"); | |
2104 | c = READCHAR; | |
2105 | if (c == '\\') | |
8792be66 | 2106 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2107 | return c | hyper_modifier; |
2108 | ||
2109 | case 'A': | |
2110 | c = READCHAR; | |
2111 | if (c != '-') | |
2112 | error ("Invalid escape character syntax"); | |
2113 | c = READCHAR; | |
2114 | if (c == '\\') | |
8792be66 | 2115 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2116 | return c | alt_modifier; |
2117 | ||
2118 | case 's': | |
2119 | c = READCHAR; | |
4d7528d0 | 2120 | if (stringp || c != '-') |
010b7eac RS |
2121 | { |
2122 | UNREAD (c); | |
2123 | return ' '; | |
2124 | } | |
7bd279cd RS |
2125 | c = READCHAR; |
2126 | if (c == '\\') | |
8792be66 | 2127 | c = read_escape (readcharfun, 0); |
7bd279cd | 2128 | return c | super_modifier; |
078e7b4a JB |
2129 | |
2130 | case 'C': | |
2131 | c = READCHAR; | |
2132 | if (c != '-') | |
2133 | error ("Invalid escape character syntax"); | |
2134 | case '^': | |
2135 | c = READCHAR; | |
2136 | if (c == '\\') | |
8792be66 | 2137 | c = read_escape (readcharfun, 0); |
164d590d KH |
2138 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2139 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2140 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2141 | return c | ctrl_modifier; | |
f405a585 RS |
2142 | /* ASCII control chars are made from letters (both cases), |
2143 | as well as the non-letters within 0100...0137. */ | |
2144 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2145 | return (c & (037 | ~0177)); | |
2146 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2147 | return (c & (037 | ~0177)); | |
078e7b4a | 2148 | else |
7bd279cd | 2149 | return c | ctrl_modifier; |
078e7b4a JB |
2150 | |
2151 | case '0': | |
2152 | case '1': | |
2153 | case '2': | |
2154 | case '3': | |
2155 | case '4': | |
2156 | case '5': | |
2157 | case '6': | |
2158 | case '7': | |
2159 | /* An octal escape, as in ANSI C. */ | |
2160 | { | |
2161 | register int i = c - '0'; | |
2162 | register int count = 0; | |
2163 | while (++count < 3) | |
2164 | { | |
2165 | if ((c = READCHAR) >= '0' && c <= '7') | |
2166 | { | |
2167 | i *= 8; | |
2168 | i += c - '0'; | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | UNREAD (c); | |
2173 | break; | |
2174 | } | |
2175 | } | |
177c0ea7 | 2176 | |
8f924df7 | 2177 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2178 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2179 | return i; |
2180 | } | |
2181 | ||
2182 | case 'x': | |
2183 | /* A hex escape, as in ANSI C. */ | |
2184 | { | |
2185 | int i = 0; | |
1571601b | 2186 | int count = 0; |
078e7b4a JB |
2187 | while (1) |
2188 | { | |
2189 | c = READCHAR; | |
2190 | if (c >= '0' && c <= '9') | |
2191 | { | |
2192 | i *= 16; | |
2193 | i += c - '0'; | |
2194 | } | |
2195 | else if ((c >= 'a' && c <= 'f') | |
2196 | || (c >= 'A' && c <= 'F')) | |
2197 | { | |
2198 | i *= 16; | |
2199 | if (c >= 'a' && c <= 'f') | |
2200 | i += c - 'a' + 10; | |
2201 | else | |
2202 | i += c - 'A' + 10; | |
2203 | } | |
2204 | else | |
2205 | { | |
2206 | UNREAD (c); | |
2207 | break; | |
2208 | } | |
1571601b | 2209 | count++; |
078e7b4a | 2210 | } |
f6f79b37 | 2211 | |
1571601b | 2212 | if (count < 3 && i >= 0x80) |
8792be66 | 2213 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2214 | return i; |
2215 | } | |
2216 | ||
71b169b8 EZ |
2217 | case 'U': |
2218 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2219 | unicode_hex_count = 8; | |
2220 | case 'u': | |
2221 | ||
9735b9ce | 2222 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2223 | not arbitrarily in the source code, as in some other languages. */ |
2224 | { | |
a808f22d | 2225 | unsigned int i = 0; |
71b169b8 | 2226 | int count = 0; |
71b169b8 EZ |
2227 | |
2228 | while (++count <= unicode_hex_count) | |
2229 | { | |
2230 | c = READCHAR; | |
a3ac22e4 | 2231 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2232 | want. */ |
2233 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2234 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2235 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2236 | else | |
2237 | { | |
2238 | error ("Non-hex digit used for Unicode escape"); | |
2239 | break; | |
2240 | } | |
2241 | } | |
a808f22d KH |
2242 | if (i > 0x10FFFF) |
2243 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2244 | return i; |
71b169b8 EZ |
2245 | } |
2246 | ||
078e7b4a JB |
2247 | default: |
2248 | return c; | |
2249 | } | |
2250 | } | |
2251 | ||
bf5d1a17 GM |
2252 | /* Read an integer in radix RADIX using READCHARFUN to read |
2253 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2254 | read error is signaled . Value is the integer read. Signals an | |
2255 | error if encountering invalid read syntax or if RADIX is out of | |
2256 | range. */ | |
2257 | ||
2258 | static Lisp_Object | |
971de7fb | 2259 | read_integer (Lisp_Object readcharfun, int radix) |
bf5d1a17 | 2260 | { |
5e37dc22 | 2261 | int ndigits = 0, invalid_p, c, sign = 0; |
155a6764 SM |
2262 | /* We use a floating point number because */ |
2263 | double number = 0; | |
bf5d1a17 GM |
2264 | |
2265 | if (radix < 2 || radix > 36) | |
2266 | invalid_p = 1; | |
2267 | else | |
2268 | { | |
2269 | number = ndigits = invalid_p = 0; | |
2270 | sign = 1; | |
2271 | ||
2272 | c = READCHAR; | |
2273 | if (c == '-') | |
2274 | { | |
2275 | c = READCHAR; | |
2276 | sign = -1; | |
2277 | } | |
2278 | else if (c == '+') | |
2279 | c = READCHAR; | |
177c0ea7 | 2280 | |
bf5d1a17 GM |
2281 | while (c >= 0) |
2282 | { | |
2283 | int digit; | |
177c0ea7 | 2284 | |
bf5d1a17 GM |
2285 | if (c >= '0' && c <= '9') |
2286 | digit = c - '0'; | |
2287 | else if (c >= 'a' && c <= 'z') | |
2288 | digit = c - 'a' + 10; | |
2289 | else if (c >= 'A' && c <= 'Z') | |
2290 | digit = c - 'A' + 10; | |
2291 | else | |
b632fa48 GM |
2292 | { |
2293 | UNREAD (c); | |
2294 | break; | |
2295 | } | |
bf5d1a17 GM |
2296 | |
2297 | if (digit < 0 || digit >= radix) | |
2298 | invalid_p = 1; | |
2299 | ||
2300 | number = radix * number + digit; | |
2301 | ++ndigits; | |
2302 | c = READCHAR; | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | if (ndigits == 0 || invalid_p) | |
2307 | { | |
2308 | char buf[50]; | |
2309 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2310 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2311 | } |
2312 | ||
155a6764 | 2313 | return make_fixnum_or_float (sign * number); |
bf5d1a17 GM |
2314 | } |
2315 | ||
2316 | ||
6428369f KH |
2317 | /* If the next token is ')' or ']' or '.', we store that character |
2318 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2319 | zero in *PCH and we read and return one lisp object. |
2320 | ||
2321 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2322 | ||
078e7b4a | 2323 | static Lisp_Object |
971de7fb | 2324 | read1 (register Lisp_Object readcharfun, int *pch, int first_in_list) |
078e7b4a JB |
2325 | { |
2326 | register int c; | |
4ad679f9 | 2327 | int uninterned_symbol = 0; |
1202434b | 2328 | int multibyte; |
4ad679f9 | 2329 | |
6428369f | 2330 | *pch = 0; |
8792be66 | 2331 | load_each_byte = 0; |
078e7b4a JB |
2332 | |
2333 | retry: | |
2334 | ||
1202434b | 2335 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2336 | if (c < 0) |
2337 | end_of_file_error (); | |
078e7b4a JB |
2338 | |
2339 | switch (c) | |
2340 | { | |
2341 | case '(': | |
2342 | return read_list (0, readcharfun); | |
2343 | ||
2344 | case '[': | |
c15cfd1f | 2345 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2346 | |
2347 | case ')': | |
2348 | case ']': | |
078e7b4a | 2349 | { |
6428369f KH |
2350 | *pch = c; |
2351 | return Qnil; | |
078e7b4a JB |
2352 | } |
2353 | ||
2354 | case '#': | |
200f684e | 2355 | c = READCHAR; |
f19a0f5b TZ |
2356 | if (c == 's') |
2357 | { | |
2358 | c = READCHAR; | |
2359 | if (c == '(') | |
2360 | { | |
2361 | /* Accept extended format for hashtables (extensible to | |
2362 | other types), e.g. | |
2363 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ | |
2364 | Lisp_Object tmp = read_list (0, readcharfun); | |
2365 | Lisp_Object head = CAR_SAFE (tmp); | |
2366 | Lisp_Object data = Qnil; | |
2367 | Lisp_Object val = Qnil; | |
2368 | /* The size is 2 * number of allowed keywords to | |
2369 | make-hash-table. */ | |
9735b9ce | 2370 | Lisp_Object params[10]; |
f19a0f5b TZ |
2371 | Lisp_Object ht; |
2372 | Lisp_Object key = Qnil; | |
2373 | int param_count = 0; | |
9735b9ce | 2374 | |
f19a0f5b TZ |
2375 | if (!EQ (head, Qhash_table)) |
2376 | error ("Invalid extended read marker at head of #s list " | |
2377 | "(only hash-table allowed)"); | |
9735b9ce | 2378 | |
f19a0f5b TZ |
2379 | tmp = CDR_SAFE (tmp); |
2380 | ||
2381 | /* This is repetitive but fast and simple. */ | |
2382 | params[param_count] = QCsize; | |
2383 | params[param_count+1] = Fplist_get (tmp, Qsize); | |
5721b4ed AS |
2384 | if (!NILP (params[param_count + 1])) |
2385 | param_count += 2; | |
f19a0f5b TZ |
2386 | |
2387 | params[param_count] = QCtest; | |
2388 | params[param_count+1] = Fplist_get (tmp, Qtest); | |
5721b4ed AS |
2389 | if (!NILP (params[param_count + 1])) |
2390 | param_count += 2; | |
f19a0f5b TZ |
2391 | |
2392 | params[param_count] = QCweakness; | |
2393 | params[param_count+1] = Fplist_get (tmp, Qweakness); | |
5721b4ed AS |
2394 | if (!NILP (params[param_count + 1])) |
2395 | param_count += 2; | |
f19a0f5b TZ |
2396 | |
2397 | params[param_count] = QCrehash_size; | |
2398 | params[param_count+1] = Fplist_get (tmp, Qrehash_size); | |
5721b4ed AS |
2399 | if (!NILP (params[param_count + 1])) |
2400 | param_count += 2; | |
f19a0f5b TZ |
2401 | |
2402 | params[param_count] = QCrehash_threshold; | |
2403 | params[param_count+1] = Fplist_get (tmp, Qrehash_threshold); | |
5721b4ed AS |
2404 | if (!NILP (params[param_count + 1])) |
2405 | param_count += 2; | |
f19a0f5b TZ |
2406 | |
2407 | /* This is the hashtable data. */ | |
2408 | data = Fplist_get (tmp, Qdata); | |
2409 | ||
2410 | /* Now use params to make a new hashtable and fill it. */ | |
2411 | ht = Fmake_hash_table (param_count, params); | |
9735b9ce | 2412 | |
f19a0f5b TZ |
2413 | while (CONSP (data)) |
2414 | { | |
2415 | key = XCAR (data); | |
2416 | data = XCDR (data); | |
2417 | if (!CONSP (data)) | |
2418 | error ("Odd number of elements in hashtable data"); | |
2419 | val = XCAR (data); | |
2420 | data = XCDR (data); | |
2421 | Fputhash (key, val, ht); | |
2422 | } | |
9735b9ce | 2423 | |
f19a0f5b TZ |
2424 | return ht; |
2425 | } | |
5721b4ed AS |
2426 | UNREAD (c); |
2427 | invalid_syntax ("#", 1); | |
f19a0f5b | 2428 | } |
c2390933 RS |
2429 | if (c == '^') |
2430 | { | |
2431 | c = READCHAR; | |
2432 | if (c == '[') | |
2433 | { | |
2434 | Lisp_Object tmp; | |
c15cfd1f | 2435 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2436 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2437 | error ("Invalid size char-table"); |
985773c9 | 2438 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2439 | return tmp; |
2440 | } | |
3701b5de KH |
2441 | else if (c == '^') |
2442 | { | |
2443 | c = READCHAR; | |
2444 | if (c == '[') | |
2445 | { | |
2446 | Lisp_Object tmp; | |
1571601b | 2447 | int depth, size; |
8f924df7 | 2448 | |
c15cfd1f | 2449 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2450 | if (!INTEGERP (AREF (tmp, 0))) |
2451 | error ("Invalid depth in char-table"); | |
2452 | depth = XINT (AREF (tmp, 0)); | |
2453 | if (depth < 1 || depth > 3) | |
2454 | error ("Invalid depth in char-table"); | |
41482d36 | 2455 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2456 | if (chartab_size [depth] != size) |
3701b5de | 2457 | error ("Invalid size char-table"); |
985773c9 | 2458 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2459 | return tmp; |
2460 | } | |
336d4a9c | 2461 | invalid_syntax ("#^^", 3); |
3701b5de | 2462 | } |
336d4a9c | 2463 | invalid_syntax ("#^", 2); |
c2390933 RS |
2464 | } |
2465 | if (c == '&') | |
2466 | { | |
2467 | Lisp_Object length; | |
2468 | length = read1 (readcharfun, pch, first_in_list); | |
2469 | c = READCHAR; | |
2470 | if (c == '"') | |
2471 | { | |
2472 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2473 | int size_in_chars |
2474 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2475 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2476 | |
2477 | UNREAD (c); | |
2478 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2479 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2480 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2481 | /* We used to print 1 char too many |
2482 | when the number of bits was a multiple of 8. | |
2483 | Accept such input in case it came from an old | |
2484 | version. */ | |
2485 | && ! (XFASTINT (length) | |
327719ee | 2486 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2487 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2488 | |
c2390933 | 2489 | val = Fmake_bool_vector (length, Qnil); |
72af86bd | 2490 | memcpy (XBOOL_VECTOR (val)->data, SDATA (tmp), size_in_chars); |
67d3b149 | 2491 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2492 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2493 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2494 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2495 | return val; |
2496 | } | |
336d4a9c | 2497 | invalid_syntax ("#&...", 5); |
c2390933 | 2498 | } |
200f684e | 2499 | if (c == '[') |
876c194c SM |
2500 | { |
2501 | /* Accept compiled functions at read-time so that we don't have to | |
2502 | build them using function calls. */ | |
2503 | Lisp_Object tmp; | |
2504 | tmp = read_vector (readcharfun, 1); | |
2505 | return Fmake_byte_code (XVECTOR (tmp)->size, | |
2506 | XVECTOR (tmp)->contents); | |
2507 | } | |
748ef62f RS |
2508 | if (c == '(') |
2509 | { | |
2510 | Lisp_Object tmp; | |
2511 | struct gcpro gcpro1; | |
e28552a4 | 2512 | int ch; |
748ef62f RS |
2513 | |
2514 | /* Read the string itself. */ | |
17634846 | 2515 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2516 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2517 | invalid_syntax ("#", 1); |
748ef62f RS |
2518 | GCPRO1 (tmp); |
2519 | /* Read the intervals and their properties. */ | |
2520 | while (1) | |
2521 | { | |
2522 | Lisp_Object beg, end, plist; | |
2523 | ||
17634846 | 2524 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2525 | end = plist = Qnil; |
6428369f KH |
2526 | if (ch == ')') |
2527 | break; | |
2528 | if (ch == 0) | |
17634846 | 2529 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2530 | if (ch == 0) |
17634846 | 2531 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2532 | if (ch) |
336d4a9c | 2533 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2534 | Fset_text_properties (beg, end, plist, tmp); |
2535 | } | |
2536 | UNGCPRO; | |
2537 | return tmp; | |
2538 | } | |
177c0ea7 | 2539 | |
20ea2964 RS |
2540 | /* #@NUMBER is used to skip NUMBER following characters. |
2541 | That's used in .elc files to skip over doc strings | |
2542 | and function definitions. */ | |
2543 | if (c == '@') | |
2544 | { | |
2545 | int i, nskip = 0; | |
2546 | ||
8792be66 | 2547 | load_each_byte = 1; |
20ea2964 RS |
2548 | /* Read a decimal integer. */ |
2549 | while ((c = READCHAR) >= 0 | |
2550 | && c >= '0' && c <= '9') | |
2551 | { | |
2552 | nskip *= 10; | |
2553 | nskip += c - '0'; | |
2554 | } | |
2555 | if (c >= 0) | |
2556 | UNREAD (c); | |
177c0ea7 | 2557 | |
8792be66 KH |
2558 | if (load_force_doc_strings |
2559 | && (EQ (readcharfun, Qget_file_char) | |
2560 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2561 | { |
2562 | /* If we are supposed to force doc strings into core right now, | |
2563 | record the last string that we skipped, | |
2564 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2565 | |
2566 | /* But first exchange saved_doc_string | |
2567 | with prev_saved_doc_string, so we save two strings. */ | |
2568 | { | |
2569 | char *temp = saved_doc_string; | |
2570 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2571 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2572 | int temp_len = saved_doc_string_length; |
2573 | ||
2574 | saved_doc_string = prev_saved_doc_string; | |
2575 | saved_doc_string_size = prev_saved_doc_string_size; | |
2576 | saved_doc_string_position = prev_saved_doc_string_position; | |
2577 | saved_doc_string_length = prev_saved_doc_string_length; | |
2578 | ||
2579 | prev_saved_doc_string = temp; | |
2580 | prev_saved_doc_string_size = temp_size; | |
2581 | prev_saved_doc_string_position = temp_pos; | |
2582 | prev_saved_doc_string_length = temp_len; | |
2583 | } | |
2584 | ||
b2a30870 RS |
2585 | if (saved_doc_string_size == 0) |
2586 | { | |
2587 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2588 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2589 | } |
2590 | if (nskip > saved_doc_string_size) | |
2591 | { | |
2592 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2593 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2594 | saved_doc_string_size); | |
b2a30870 RS |
2595 | } |
2596 | ||
68c45bf0 | 2597 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2598 | |
2599 | /* Copy that many characters into saved_doc_string. */ | |
2600 | for (i = 0; i < nskip && c >= 0; i++) | |
2601 | saved_doc_string[i] = c = READCHAR; | |
2602 | ||
2603 | saved_doc_string_length = i; | |
2604 | } | |
2605 | else | |
b2a30870 RS |
2606 | { |
2607 | /* Skip that many characters. */ | |
2608 | for (i = 0; i < nskip && c >= 0; i++) | |
2609 | c = READCHAR; | |
2610 | } | |
d49f0c1a | 2611 | |
8792be66 | 2612 | load_each_byte = 0; |
20ea2964 RS |
2613 | goto retry; |
2614 | } | |
e2518d02 RS |
2615 | if (c == '!') |
2616 | { | |
2617 | /* #! appears at the beginning of an executable file. | |
2618 | Skip the first line. */ | |
225c7a07 | 2619 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2620 | c = READCHAR; |
2621 | goto retry; | |
2622 | } | |
20ea2964 RS |
2623 | if (c == '$') |
2624 | return Vload_file_name; | |
2b6cae0c RS |
2625 | if (c == '\'') |
2626 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2627 | /* #:foo is the uninterned symbol named foo. */ |
2628 | if (c == ':') | |
2629 | { | |
2630 | uninterned_symbol = 1; | |
2631 | c = READCHAR; | |
2632 | goto default_label; | |
2633 | } | |
2634 | /* Reader forms that can reuse previously read objects. */ | |
2635 | if (c >= '0' && c <= '9') | |
2636 | { | |
2637 | int n = 0; | |
2638 | Lisp_Object tem; | |
2b6cae0c | 2639 | |
4ad679f9 EN |
2640 | /* Read a non-negative integer. */ |
2641 | while (c >= '0' && c <= '9') | |
2642 | { | |
2643 | n *= 10; | |
2644 | n += c - '0'; | |
2645 | c = READCHAR; | |
2646 | } | |
2647 | /* #n=object returns object, but associates it with n for #n#. */ | |
91f68422 | 2648 | if (c == '=' && !NILP (Vread_circle)) |
4ad679f9 | 2649 | { |
9e062b6c RS |
2650 | /* Make a placeholder for #n# to use temporarily */ |
2651 | Lisp_Object placeholder; | |
2652 | Lisp_Object cell; | |
2653 | ||
9735b9ce | 2654 | placeholder = Fcons (Qnil, Qnil); |
9e062b6c RS |
2655 | cell = Fcons (make_number (n), placeholder); |
2656 | read_objects = Fcons (cell, read_objects); | |
2657 | ||
2658 | /* Read the object itself. */ | |
4ad679f9 | 2659 | tem = read0 (readcharfun); |
9e062b6c RS |
2660 | |
2661 | /* Now put it everywhere the placeholder was... */ | |
2662 | substitute_object_in_subtree (tem, placeholder); | |
2663 | ||
2664 | /* ...and #n# will use the real value from now on. */ | |
2665 | Fsetcdr (cell, tem); | |
177c0ea7 | 2666 | |
4ad679f9 EN |
2667 | return tem; |
2668 | } | |
2669 | /* #n# returns a previously read object. */ | |
91f68422 | 2670 | if (c == '#' && !NILP (Vread_circle)) |
4ad679f9 EN |
2671 | { |
2672 | tem = Fassq (make_number (n), read_objects); | |
2673 | if (CONSP (tem)) | |
2674 | return XCDR (tem); | |
2675 | /* Fall through to error message. */ | |
2676 | } | |
bf5d1a17 GM |
2677 | else if (c == 'r' || c == 'R') |
2678 | return read_integer (readcharfun, n); | |
177c0ea7 | 2679 | |
4ad679f9 EN |
2680 | /* Fall through to error message. */ |
2681 | } | |
bf5d1a17 GM |
2682 | else if (c == 'x' || c == 'X') |
2683 | return read_integer (readcharfun, 16); | |
2684 | else if (c == 'o' || c == 'O') | |
2685 | return read_integer (readcharfun, 8); | |
2686 | else if (c == 'b' || c == 'B') | |
2687 | return read_integer (readcharfun, 2); | |
20ea2964 | 2688 | |
200f684e | 2689 | UNREAD (c); |
336d4a9c | 2690 | invalid_syntax ("#", 1); |
078e7b4a JB |
2691 | |
2692 | case ';': | |
2693 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2694 | goto retry; | |
2695 | ||
2696 | case '\'': | |
2697 | { | |
2698 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2699 | } | |
2700 | ||
17634846 | 2701 | case '`': |
9a39b306 TO |
2702 | { |
2703 | int next_char = READCHAR; | |
2704 | UNREAD (next_char); | |
2705 | /* Transition from old-style to new-style: | |
2706 | If we see "(`" it used to mean old-style, which usually works | |
2707 | fine because ` should almost never appear in such a position | |
2708 | for new-style. But occasionally we need "(`" to mean new | |
2709 | style, so we try to distinguish the two by the fact that we | |
2710 | can either write "( `foo" or "(` foo", where the first | |
2711 | intends to use new-style whereas the second intends to use | |
2712 | old-style. For Emacs-25, we should completely remove this | |
2713 | first_in_list exception (old-style can still be obtained via | |
2714 | "(\`" anyway). */ | |
bba3e508 | 2715 | if (!new_backquote_flag && first_in_list && next_char == ' ') |
9a39b306 TO |
2716 | { |
2717 | Vold_style_backquotes = Qt; | |
2718 | goto default_label; | |
2719 | } | |
2720 | else | |
2721 | { | |
2722 | Lisp_Object value; | |
17634846 | 2723 | |
9a39b306 TO |
2724 | new_backquote_flag++; |
2725 | value = read0 (readcharfun); | |
2726 | new_backquote_flag--; | |
17634846 | 2727 | |
9a39b306 TO |
2728 | return Fcons (Qbackquote, Fcons (value, Qnil)); |
2729 | } | |
2730 | } | |
17634846 | 2731 | case ',': |
bba3e508 SM |
2732 | { |
2733 | int next_char = READCHAR; | |
2734 | UNREAD (next_char); | |
2735 | /* Transition from old-style to new-style: | |
2736 | It used to be impossible to have a new-style , other than within | |
2737 | a new-style `. This is sufficient when ` and , are used in the | |
2738 | normal way, but ` and , can also appear in args to macros that | |
2739 | will not interpret them in the usual way, in which case , may be | |
2740 | used without any ` anywhere near. | |
2741 | So we now use the same heuristic as for backquote: old-style | |
2742 | unquotes are only recognized when first on a list, and when | |
2743 | followed by a space. | |
2744 | Because it's more difficult to peak 2 chars ahead, a new-style | |
2745 | ,@ can still not be used outside of a `, unless it's in the middle | |
2746 | of a list. */ | |
2747 | if (new_backquote_flag | |
2748 | || !first_in_list | |
2749 | || (next_char != ' ' && next_char != '@')) | |
2750 | { | |
2751 | Lisp_Object comma_type = Qnil; | |
2752 | Lisp_Object value; | |
2753 | int ch = READCHAR; | |
17634846 | 2754 | |
bba3e508 SM |
2755 | if (ch == '@') |
2756 | comma_type = Qcomma_at; | |
2757 | else if (ch == '.') | |
2758 | comma_type = Qcomma_dot; | |
2759 | else | |
2760 | { | |
2761 | if (ch >= 0) UNREAD (ch); | |
2762 | comma_type = Qcomma; | |
2763 | } | |
17634846 | 2764 | |
bba3e508 SM |
2765 | value = read0 (readcharfun); |
2766 | return Fcons (comma_type, Fcons (value, Qnil)); | |
2767 | } | |
2768 | else | |
2769 | { | |
2770 | Vold_style_backquotes = Qt; | |
2771 | goto default_label; | |
2772 | } | |
2773 | } | |
078e7b4a JB |
2774 | case '?': |
2775 | { | |
8792be66 | 2776 | int modifiers; |
df9c2be7 KS |
2777 | int next_char; |
2778 | int ok; | |
f6f79b37 | 2779 | |
078e7b4a | 2780 | c = READCHAR; |
9c97398c GM |
2781 | if (c < 0) |
2782 | end_of_file_error (); | |
078e7b4a | 2783 | |
b9284371 KS |
2784 | /* Accept `single space' syntax like (list ? x) where the |
2785 | whitespace character is SPC or TAB. | |
2786 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2787 | as there are well-established escape sequences for these. */ | |
2788 | if (c == ' ' || c == '\t') | |
2789 | return make_number (c); | |
2790 | ||
078e7b4a | 2791 | if (c == '\\') |
8792be66 KH |
2792 | c = read_escape (readcharfun, 0); |
2793 | modifiers = c & CHAR_MODIFIER_MASK; | |
2794 | c &= ~CHAR_MODIFIER_MASK; | |
2795 | if (CHAR_BYTE8_P (c)) | |
2796 | c = CHAR_TO_BYTE8 (c); | |
2797 | c |= modifiers; | |
078e7b4a | 2798 | |
df9c2be7 | 2799 | next_char = READCHAR; |
bba3e508 SM |
2800 | ok = (next_char <= 040 |
2801 | || (next_char < 0200 | |
2802 | && (strchr ("\"';()[]#?`,.", next_char)))); | |
df9c2be7 | 2803 | UNREAD (next_char); |
336d4a9c KS |
2804 | if (ok) |
2805 | return make_number (c); | |
37cd4238 | 2806 | |
336d4a9c | 2807 | invalid_syntax ("?", 1); |
078e7b4a JB |
2808 | } |
2809 | ||
00a9a935 | 2810 | case '"': |
078e7b4a | 2811 | { |
a742d646 GM |
2812 | char *p = read_buffer; |
2813 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2814 | register int c; |
1571601b KH |
2815 | /* Nonzero if we saw an escape sequence specifying |
2816 | a multibyte character. */ | |
e7fc914b | 2817 | int force_multibyte = 0; |
1571601b | 2818 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2819 | a single-byte character. */ |
2820 | int force_singlebyte = 0; | |
078e7b4a | 2821 | int cancel = 0; |
5150eeec | 2822 | int nchars = 0; |
078e7b4a JB |
2823 | |
2824 | while ((c = READCHAR) >= 0 | |
2825 | && c != '\"') | |
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 | } | |
bed23cb2 | 2835 | |
078e7b4a | 2836 | if (c == '\\') |
03e88613 | 2837 | { |
1571601b | 2838 | int modifiers; |
f6f79b37 | 2839 | |
8792be66 | 2840 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2841 | |
2842 | /* C is -1 if \ newline has just been seen */ | |
2843 | if (c == -1) | |
03e88613 | 2844 | { |
bed23cb2 RS |
2845 | if (p == read_buffer) |
2846 | cancel = 1; | |
03e88613 RS |
2847 | continue; |
2848 | } | |
bed23cb2 | 2849 | |
1571601b KH |
2850 | modifiers = c & CHAR_MODIFIER_MASK; |
2851 | c = c & ~CHAR_MODIFIER_MASK; | |
2852 | ||
8792be66 | 2853 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2854 | force_singlebyte = 1; |
8792be66 | 2855 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2856 | force_multibyte = 1; |
8792be66 | 2857 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2858 | { |
2859 | /* Allow `\C- ' and `\C-?'. */ | |
2860 | if (modifiers == CHAR_CTL) | |
2861 | { | |
2862 | if (c == ' ') | |
2863 | c = 0, modifiers = 0; | |
2864 | else if (c == '?') | |
2865 | c = 127, modifiers = 0; | |
2866 | } | |
2867 | if (modifiers & CHAR_SHIFT) | |
2868 | { | |
2869 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2870 | if (c >= 'A' && c <= 'Z') | |
2871 | modifiers &= ~CHAR_SHIFT; | |
2872 | else if (c >= 'a' && c <= 'z') | |
2873 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2874 | } | |
2875 | ||
2876 | if (modifiers & CHAR_META) | |
2877 | { | |
2878 | /* Move the meta bit to the right place for a | |
2879 | string. */ | |
2880 | modifiers &= ~CHAR_META; | |
2881 | c = BYTE8_TO_CHAR (c | 0x80); | |
2882 | force_singlebyte = 1; | |
2883 | } | |
2884 | } | |
5150eeec | 2885 | |
1571601b KH |
2886 | /* Any modifiers remaining are invalid. */ |
2887 | if (modifiers) | |
2888 | error ("Invalid modifier in string"); | |
2889 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2890 | } |
8792be66 | 2891 | else |
5150eeec | 2892 | { |
1571601b | 2893 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2894 | if (CHAR_BYTE8_P (c)) |
2895 | force_singlebyte = 1; | |
2896 | else if (! ASCII_CHAR_P (c)) | |
2897 | force_multibyte = 1; | |
f943104a | 2898 | } |
5150eeec | 2899 | nchars++; |
078e7b4a | 2900 | } |
5150eeec | 2901 | |
6f7f43d5 | 2902 | if (c < 0) |
9c97398c | 2903 | end_of_file_error (); |
078e7b4a JB |
2904 | |
2905 | /* If purifying, and string starts with \ newline, | |
2906 | return zero instead. This is for doc strings | |
08564963 | 2907 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2908 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2909 | return make_number (0); |
2910 | ||
1571601b KH |
2911 | if (force_multibyte) |
2912 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2913 | ; |
1571601b | 2914 | else if (force_singlebyte) |
a742d646 | 2915 | { |
4a25e32a PE |
2916 | nchars = str_as_unibyte ((unsigned char *) read_buffer, |
2917 | p - read_buffer); | |
1571601b | 2918 | p = read_buffer + nchars; |
a742d646 | 2919 | } |
e28552a4 | 2920 | else |
1571601b | 2921 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2922 | ; |
e7fc914b | 2923 | |
abb13b09 CW |
2924 | /* We want readchar_count to be the number of characters, not |
2925 | bytes. Hence we adjust for multibyte characters in the | |
2926 | string. ... But it doesn't seem to be necessary, because | |
2927 | READCHAR *does* read multibyte characters from buffers. */ | |
2928 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2929 | if (read_pure) |
491f16a2 | 2930 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2931 | (force_multibyte |
2932 | || (p - read_buffer != nchars))); | |
491f16a2 | 2933 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2934 | (force_multibyte |
2935 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2936 | } |
2937 | ||
109d300c JB |
2938 | case '.': |
2939 | { | |
109d300c JB |
2940 | int next_char = READCHAR; |
2941 | UNREAD (next_char); | |
2942 | ||
035eec48 | 2943 | if (next_char <= 040 |
e613ea97 | 2944 | || (next_char < 0200 |
bba3e508 | 2945 | && (strchr ("\"';([#?`,", next_char)))) |
109d300c | 2946 | { |
6428369f KH |
2947 | *pch = c; |
2948 | return Qnil; | |
109d300c JB |
2949 | } |
2950 | ||
2951 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2952 | below will now loop at least once, assuring that we will not | |
2953 | try to UNREAD two characters in a row. */ | |
2954 | } | |
078e7b4a | 2955 | default: |
17634846 | 2956 | default_label: |
88852d45 | 2957 | if (c <= 040) goto retry; |
adef3de7 RS |
2958 | if (c == 0x8a0) /* NBSP */ |
2959 | goto retry; | |
078e7b4a | 2960 | { |
38404229 | 2961 | char *p = read_buffer; |
481c6336 | 2962 | int quoted = 0; |
078e7b4a JB |
2963 | |
2964 | { | |
38404229 | 2965 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2966 | |
ef1b0ba7 | 2967 | do |
078e7b4a | 2968 | { |
449fea39 | 2969 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2970 | { |
5d65df0d GM |
2971 | int offset = p - read_buffer; |
2972 | read_buffer = (char *) xrealloc (read_buffer, | |
2973 | read_buffer_size *= 2); | |
2974 | p = read_buffer + offset; | |
078e7b4a JB |
2975 | end = read_buffer + read_buffer_size; |
2976 | } | |
177c0ea7 | 2977 | |
078e7b4a | 2978 | if (c == '\\') |
481c6336 RS |
2979 | { |
2980 | c = READCHAR; | |
4ab11c09 GM |
2981 | if (c == -1) |
2982 | end_of_file_error (); | |
481c6336 RS |
2983 | quoted = 1; |
2984 | } | |
6f7f43d5 | 2985 | |
1202434b | 2986 | if (multibyte) |
4a25e32a | 2987 | p += CHAR_STRING (c, (unsigned char *) p); |
1202434b KH |
2988 | else |
2989 | *p++ = c; | |
078e7b4a | 2990 | c = READCHAR; |
ef1b0ba7 SM |
2991 | } while (c > 040 |
2992 | && c != 0x8a0 /* NBSP */ | |
2993 | && (c >= 0200 | |
2994 | || !(strchr ("\"';()[]#`,", c)))); | |
078e7b4a JB |
2995 | |
2996 | if (p == end) | |
2997 | { | |
5d65df0d GM |
2998 | int offset = p - read_buffer; |
2999 | read_buffer = (char *) xrealloc (read_buffer, | |
3000 | read_buffer_size *= 2); | |
3001 | p = read_buffer + offset; | |
3002 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
3003 | } |
3004 | *p = 0; | |
3005 | if (c >= 0) | |
3006 | UNREAD (c); | |
3007 | } | |
3008 | ||
4ad679f9 | 3009 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
3010 | { |
3011 | register char *p1; | |
481c6336 RS |
3012 | p1 = read_buffer; |
3013 | if (*p1 == '+' || *p1 == '-') p1++; | |
3014 | /* Is it an integer? */ | |
3015 | if (p1 != p) | |
3016 | { | |
3017 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
3018 | /* Integers can have trailing decimal points. */ |
3019 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
3020 | if (p1 == p) |
3021 | /* It is an integer. */ | |
3022 | { | |
481c6336 RS |
3023 | if (p1[-1] == '.') |
3024 | p1[-1] = '\0'; | |
155a6764 SM |
3025 | { |
3026 | /* EMACS_INT n = atol (read_buffer); */ | |
3027 | char *endptr = NULL; | |
3028 | EMACS_INT n = (errno = 0, | |
3029 | strtol (read_buffer, &endptr, 10)); | |
3030 | if (errno == ERANGE && endptr) | |
3031 | { | |
3032 | Lisp_Object args | |
3033 | = Fcons (make_string (read_buffer, | |
3034 | endptr - read_buffer), | |
3035 | Qnil); | |
3036 | xsignal (Qoverflow_error, args); | |
3037 | } | |
3038 | return make_fixnum_or_float (n); | |
3039 | } | |
481c6336 RS |
3040 | } |
3041 | } | |
be95bee9 | 3042 | if (isfloat_string (read_buffer, 0)) |
eb659c41 | 3043 | { |
a8972052 PE |
3044 | /* Compute NaN and infinities using 0.0 in a variable, |
3045 | to cope with compilers that think they are smarter | |
5e24a1f7 | 3046 | than we are. */ |
3c329963 | 3047 | double zero = 0.0; |
a8972052 PE |
3048 | |
3049 | double value; | |
3050 | ||
3051 | /* Negate the value ourselves. This treats 0, NaNs, | |
3052 | and infinity properly on IEEE floating point hosts, | |
3053 | and works around a common bug where atof ("-0.0") | |
3054 | drops the sign. */ | |
3055 | int negative = read_buffer[0] == '-'; | |
3056 | ||
3057 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 3058 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 3059 | switch (p[-1]) |
eb659c41 | 3060 | { |
a8972052 PE |
3061 | case 'F': |
3062 | value = 1.0 / zero; | |
3063 | break; | |
3064 | case 'N': | |
3065 | value = zero / zero; | |
7690cbb0 RS |
3066 | |
3067 | /* If that made a "negative" NaN, negate it. */ | |
3068 | ||
3069 | { | |
3070 | int i; | |
3071 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
3072 | ||
3073 | u_data.d = value; | |
3074 | u_minus_zero.d = - 0.0; | |
3075 | for (i = 0; i < sizeof (double); i++) | |
3076 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3077 | { | |
3078 | value = - value; | |
3079 | break; | |
3080 | } | |
3081 | } | |
3082 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
3083 | break; |
3084 | default: | |
3085 | value = atof (read_buffer + negative); | |
3086 | break; | |
eb659c41 | 3087 | } |
a8972052 PE |
3088 | |
3089 | return make_float (negative ? - value : value); | |
eb659c41 | 3090 | } |
481c6336 | 3091 | } |
abb13b09 | 3092 | { |
e93abe3d KH |
3093 | Lisp_Object name, result; |
3094 | EMACS_INT nbytes = p - read_buffer; | |
3095 | EMACS_INT nchars | |
4a25e32a PE |
3096 | = (multibyte |
3097 | ? multibyte_chars_in_text ((unsigned char *) read_buffer, | |
3098 | nbytes) | |
e93abe3d KH |
3099 | : nbytes); |
3100 | ||
3101 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
3102 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
3103 | else | |
3104 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
3105 | result = (uninterned_symbol ? Fmake_symbol (name) | |
3106 | : Fintern (name, Qnil)); | |
1202434b | 3107 | |
abb13b09 CW |
3108 | if (EQ (Vread_with_symbol_positions, Qt) |
3109 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 3110 | Vread_symbol_positions_list = |
abb13b09 CW |
3111 | /* Kind of a hack; this will probably fail if characters |
3112 | in the symbol name were escaped. Not really a big | |
3113 | deal, though. */ | |
f74db720 SM |
3114 | Fcons (Fcons (result, |
3115 | make_number (readchar_count | |
3116 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
3117 | Vread_symbol_positions_list); |
3118 | return result; | |
3119 | } | |
078e7b4a JB |
3120 | } |
3121 | } | |
3122 | } | |
3123 | \f | |
9e062b6c RS |
3124 | |
3125 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
3126 | static Lisp_Object seen_list; | |
3127 | ||
3128 | static void | |
971de7fb | 3129 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
3130 | { |
3131 | Lisp_Object check_object; | |
3132 | ||
3133 | /* We haven't seen any objects when we start. */ | |
3134 | seen_list = Qnil; | |
3135 | ||
3136 | /* Make all the substitutions. */ | |
3137 | check_object | |
3138 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3139 | |
9e062b6c RS |
3140 | /* Clear seen_list because we're done with it. */ |
3141 | seen_list = Qnil; | |
3142 | ||
3143 | /* The returned object here is expected to always eq the | |
3144 | original. */ | |
3145 | if (!EQ (check_object, object)) | |
3146 | error ("Unexpected mutation error in reader"); | |
3147 | } | |
3148 | ||
3149 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3150 | #define SUBSTITUTE(get_val, set_val) \ |
3151 | do { \ | |
3152 | Lisp_Object old_value = get_val; \ | |
3153 | Lisp_Object true_value \ | |
3154 | = substitute_object_recurse (object, placeholder, \ | |
3155 | old_value); \ | |
3156 | \ | |
3157 | if (!EQ (old_value, true_value)) \ | |
3158 | { \ | |
3159 | set_val; \ | |
3160 | } \ | |
3161 | } while (0) | |
9e062b6c RS |
3162 | |
3163 | static Lisp_Object | |
971de7fb | 3164 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c RS |
3165 | { |
3166 | /* If we find the placeholder, return the target object. */ | |
3167 | if (EQ (placeholder, subtree)) | |
3168 | return object; | |
3169 | ||
3170 | /* If we've been to this node before, don't explore it again. */ | |
3171 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3172 | return subtree; | |
3173 | ||
3174 | /* If this node can be the entry point to a cycle, remember that | |
3175 | we've seen it. It can only be such an entry point if it was made | |
3176 | by #n=, which means that we can find it as a value in | |
3177 | read_objects. */ | |
3178 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3179 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3180 | |
9e062b6c RS |
3181 | /* Recurse according to subtree's type. |
3182 | Every branch must return a Lisp_Object. */ | |
3183 | switch (XTYPE (subtree)) | |
3184 | { | |
3185 | case Lisp_Vectorlike: | |
3186 | { | |
7a3d90dc SM |
3187 | int i, length = 0; |
3188 | if (BOOL_VECTOR_P (subtree)) | |
3189 | return subtree; /* No sub-objects anyway. */ | |
3190 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3191 | || COMPILEDP (subtree)) | |
3192 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3193 | else if (VECTORP (subtree)) | |
3194 | length = ASIZE (subtree); | |
3195 | else | |
3196 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3197 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3198 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3199 | behavior. */ |
3200 | wrong_type_argument (Qsequencep, subtree); | |
3201 | ||
9e062b6c | 3202 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3203 | SUBSTITUTE (AREF (subtree, i), |
3204 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3205 | return subtree; |
3206 | } | |
3207 | ||
3208 | case Lisp_Cons: | |
3209 | { | |
7a3d90dc SM |
3210 | SUBSTITUTE (XCAR (subtree), |
3211 | XSETCAR (subtree, true_value)); | |
3212 | SUBSTITUTE (XCDR (subtree), | |
3213 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3214 | return subtree; |
3215 | } | |
3216 | ||
9e062b6c RS |
3217 | case Lisp_String: |
3218 | { | |
3219 | /* Check for text properties in each interval. | |
e61b9b87 | 3220 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3221 | |
d5db4077 | 3222 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3223 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3224 | |
0d74b006 SM |
3225 | traverse_intervals_noorder (root_interval, |
3226 | &substitute_in_interval, arg); | |
9e062b6c RS |
3227 | |
3228 | return subtree; | |
3229 | } | |
9e062b6c RS |
3230 | |
3231 | /* Other types don't recurse any further. */ | |
3232 | default: | |
3233 | return subtree; | |
3234 | } | |
3235 | } | |
3236 | ||
3237 | /* Helper function for substitute_object_recurse. */ | |
3238 | static void | |
971de7fb | 3239 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3240 | { |
3241 | Lisp_Object object = Fcar (arg); | |
3242 | Lisp_Object placeholder = Fcdr (arg); | |
3243 | ||
9735b9ce | 3244 | SUBSTITUTE (interval->plist, interval->plist = true_value); |
9e062b6c RS |
3245 | } |
3246 | ||
3247 | \f | |
078e7b4a JB |
3248 | #define LEAD_INT 1 |
3249 | #define DOT_CHAR 2 | |
3250 | #define TRAIL_INT 4 | |
3251 | #define E_CHAR 8 | |
3252 | #define EXP_INT 16 | |
3253 | ||
3254 | int | |
a8fe7202 | 3255 | isfloat_string (const char *cp, int ignore_trailing) |
078e7b4a | 3256 | { |
a8fe7202 AS |
3257 | int state; |
3258 | const char *start = cp; | |
d8578e58 | 3259 | |
078e7b4a JB |
3260 | state = 0; |
3261 | if (*cp == '+' || *cp == '-') | |
3262 | cp++; | |
3263 | ||
075027b1 | 3264 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3265 | { |
3266 | state |= LEAD_INT; | |
075027b1 RS |
3267 | while (*cp >= '0' && *cp <= '9') |
3268 | cp++; | |
078e7b4a JB |
3269 | } |
3270 | if (*cp == '.') | |
3271 | { | |
3272 | state |= DOT_CHAR; | |
3273 | cp++; | |
3274 | } | |
075027b1 | 3275 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3276 | { |
3277 | state |= TRAIL_INT; | |
075027b1 | 3278 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3279 | cp++; |
3280 | } | |
a35f88bf | 3281 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3282 | { |
3283 | state |= E_CHAR; | |
3284 | cp++; | |
e73997a1 RS |
3285 | if (*cp == '+' || *cp == '-') |
3286 | cp++; | |
078e7b4a | 3287 | } |
078e7b4a | 3288 | |
075027b1 | 3289 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3290 | { |
3291 | state |= EXP_INT; | |
075027b1 | 3292 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3293 | cp++; |
3294 | } | |
d8578e58 RS |
3295 | else if (cp == start) |
3296 | ; | |
eb659c41 RS |
3297 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3298 | { | |
3299 | state |= EXP_INT; | |
3300 | cp += 3; | |
3301 | } | |
3302 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3303 | { | |
3304 | state |= EXP_INT; | |
3305 | cp += 3; | |
3306 | } | |
3307 | ||
be95bee9 | 3308 | return ((ignore_trailing |
a8fe7202 AS |
3309 | || *cp == 0 || *cp == ' ' || *cp == '\t' || *cp == '\n' |
3310 | || *cp == '\r' || *cp == '\f') | |
078e7b4a | 3311 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3312 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3313 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3314 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3315 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3316 | } |
cc94f3b2 | 3317 | |
078e7b4a JB |
3318 | \f |
3319 | static Lisp_Object | |
876c194c | 3320 | read_vector (Lisp_Object readcharfun, int bytecodeflag) |
078e7b4a JB |
3321 | { |
3322 | register int i; | |
3323 | register int size; | |
3324 | register Lisp_Object *ptr; | |
c15cfd1f | 3325 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3326 | register struct Lisp_Cons *otem; |
3327 | Lisp_Object len; | |
3328 | ||
3329 | tem = read_list (1, readcharfun); | |
3330 | len = Flength (tem); | |
3331 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3332 | ||
078e7b4a JB |
3333 | size = XVECTOR (vector)->size; |
3334 | ptr = XVECTOR (vector)->contents; | |
3335 | for (i = 0; i < size; i++) | |
3336 | { | |
c15cfd1f | 3337 | item = Fcar (tem); |
b9598260 | 3338 | |
c15cfd1f RS |
3339 | /* If `load-force-doc-strings' is t when reading a lazily-loaded |
3340 | bytecode object, the docstring containing the bytecode and | |
3341 | constants values must be treated as unibyte and passed to | |
3342 | Fread, to get the actual bytecode string and constants vector. */ | |
876c194c | 3343 | if (bytecodeflag && load_force_doc_strings) |
c15cfd1f RS |
3344 | { |
3345 | if (i == COMPILED_BYTECODE) | |
3346 | { | |
3347 | if (!STRINGP (item)) | |
6fa2b890 | 3348 | error ("Invalid byte code"); |
c15cfd1f RS |
3349 | |
3350 | /* Delay handling the bytecode slot until we know whether | |
3351 | it is lazily-loaded (we can tell by whether the | |
3352 | constants slot is nil). */ | |
3353 | ptr[COMPILED_CONSTANTS] = item; | |
3354 | item = Qnil; | |
3355 | } | |
3356 | else if (i == COMPILED_CONSTANTS) | |
3357 | { | |
3358 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3359 | ||
3360 | if (NILP (item)) | |
3361 | { | |
3362 | /* Coerce string to unibyte (like string-as-unibyte, | |
3363 | but without generating extra garbage and | |
3364 | guaranteeing no change in the contents). */ | |
bee91904 | 3365 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3366 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3367 | |
8792be66 | 3368 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3369 | if (!CONSP (item)) |
6fa2b890 | 3370 | error ("Invalid byte code"); |
c15cfd1f RS |
3371 | |
3372 | otem = XCONS (item); | |
c1d497be KR |
3373 | bytestr = XCAR (item); |
3374 | item = XCDR (item); | |
c15cfd1f RS |
3375 | free_cons (otem); |
3376 | } | |
3377 | ||
3378 | /* Now handle the bytecode slot. */ | |
3379 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3380 | } | |
8792be66 KH |
3381 | else if (i == COMPILED_DOC_STRING |
3382 | && STRINGP (item) | |
3383 | && ! STRING_MULTIBYTE (item)) | |
3384 | { | |
3385 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3386 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3387 | else | |
3388 | item = Fstring_as_multibyte (item); | |
3389 | } | |
c15cfd1f RS |
3390 | } |
3391 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3392 | otem = XCONS (tem); |
3393 | tem = Fcdr (tem); | |
3394 | free_cons (otem); | |
3395 | } | |
b9598260 | 3396 | |
078e7b4a JB |
3397 | return vector; |
3398 | } | |
177c0ea7 | 3399 | |
6f7f43d5 RS |
3400 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3401 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3402 | and make structure pure. */ |
3403 | ||
3404 | static Lisp_Object | |
971de7fb | 3405 | read_list (int flag, register Lisp_Object readcharfun) |
078e7b4a JB |
3406 | { |
3407 | /* -1 means check next element for defun, | |
3408 | 0 means don't check, | |
3409 | 1 means already checked and found defun. */ | |
3410 | int defunflag = flag < 0 ? -1 : 0; | |
3411 | Lisp_Object val, tail; | |
3412 | register Lisp_Object elt, tem; | |
3413 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3414 | /* 0 is the normal case. |
b2a30870 | 3415 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3416 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3417 | int doc_reference = 0; |
078e7b4a | 3418 | |
17634846 RS |
3419 | /* Initialize this to 1 if we are reading a list. */ |
3420 | int first_in_list = flag <= 0; | |
3421 | ||
078e7b4a JB |
3422 | val = Qnil; |
3423 | tail = Qnil; | |
3424 | ||
3425 | while (1) | |
3426 | { | |
e28552a4 | 3427 | int ch; |
078e7b4a | 3428 | GCPRO2 (val, tail); |
17634846 | 3429 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3430 | UNGCPRO; |
20ea2964 | 3431 | |
17634846 RS |
3432 | first_in_list = 0; |
3433 | ||
821d417e | 3434 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3435 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3436 | && ! NILP (elt) |
821d417e RS |
3437 | && !NILP (Vpurify_flag)) |
3438 | { | |
3439 | if (NILP (Vdoc_file_name)) | |
3440 | /* We have not yet called Snarf-documentation, so assume | |
3441 | this file is described in the DOC-MM.NN file | |
3442 | and Snarf-documentation will fill in the right value later. | |
3443 | For now, replace the whole list with 0. */ | |
3444 | doc_reference = 1; | |
3445 | else | |
3446 | /* We have already called Snarf-documentation, so make a relative | |
3447 | file name for this file, so it can be found properly | |
3448 | in the installed Lisp directory. | |
3449 | We don't use Fexpand_file_name because that would make | |
3450 | the directory absolute now. */ | |
3451 | elt = concat2 (build_string ("../lisp/"), | |
3452 | Ffile_name_nondirectory (elt)); | |
3453 | } | |
b2a30870 | 3454 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3455 | && ! NILP (elt) |
b2a30870 RS |
3456 | && load_force_doc_strings) |
3457 | doc_reference = 2; | |
20ea2964 | 3458 | |
6428369f | 3459 | if (ch) |
078e7b4a JB |
3460 | { |
3461 | if (flag > 0) | |
3462 | { | |
6428369f | 3463 | if (ch == ']') |
078e7b4a | 3464 | return val; |
336d4a9c | 3465 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3466 | } |
6428369f | 3467 | if (ch == ')') |
078e7b4a | 3468 | return val; |
6428369f | 3469 | if (ch == '.') |
078e7b4a JB |
3470 | { |
3471 | GCPRO2 (val, tail); | |
265a9e55 | 3472 | if (!NILP (tail)) |
f5df591a | 3473 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3474 | else |
3475 | val = read0 (readcharfun); | |
17634846 | 3476 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3477 | UNGCPRO; |
6428369f | 3478 | if (ch == ')') |
821d417e RS |
3479 | { |
3480 | if (doc_reference == 1) | |
3481 | return make_number (0); | |
b2a30870 RS |
3482 | if (doc_reference == 2) |
3483 | { | |
3484 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3485 | If it's in saved_doc_string, get it from there. |
3486 | ||
3487 | Here, we don't know if the string is a | |
3488 | bytecode string or a doc string. As a | |
3489 | bytecode string must be unibyte, we always | |
3490 | return a unibyte string. If it is actually a | |
3491 | doc string, caller must make it | |
3492 | multibyte. */ | |
8f924df7 | 3493 | |
c1d497be | 3494 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3495 | /* Position is negative for user variables. */ |
3496 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3497 | if (pos >= saved_doc_string_position |
3498 | && pos < (saved_doc_string_position | |
3499 | + saved_doc_string_length)) | |
3500 | { | |
3501 | int start = pos - saved_doc_string_position; | |
3502 | int from, to; | |
3503 | ||
3504 | /* Process quoting with ^A, | |
3505 | and find the end of the string, | |
3506 | which is marked with ^_ (037). */ | |
3507 | for (from = start, to = start; | |
3508 | saved_doc_string[from] != 037;) | |
3509 | { | |
3510 | int c = saved_doc_string[from++]; | |
3511 | if (c == 1) | |
3512 | { | |
3513 | c = saved_doc_string[from++]; | |
3514 | if (c == 1) | |
3515 | saved_doc_string[to++] = c; | |
3516 | else if (c == '0') | |
3517 | saved_doc_string[to++] = 0; | |
3518 | else if (c == '_') | |
3519 | saved_doc_string[to++] = 037; | |
3520 | } | |
3521 | else | |
3522 | saved_doc_string[to++] = c; | |
3523 | } | |
3524 | ||
8792be66 KH |
3525 | return make_unibyte_string (saved_doc_string + start, |
3526 | to - start); | |
b2a30870 | 3527 | } |
c15cfd1f RS |
3528 | /* Look in prev_saved_doc_string the same way. */ |
3529 | else if (pos >= prev_saved_doc_string_position | |
3530 | && pos < (prev_saved_doc_string_position | |
3531 | + prev_saved_doc_string_length)) | |
3532 | { | |
3533 | int start = pos - prev_saved_doc_string_position; | |
3534 | int from, to; | |
3535 | ||
3536 | /* Process quoting with ^A, | |
3537 | and find the end of the string, | |
3538 | which is marked with ^_ (037). */ | |
3539 | for (from = start, to = start; | |
3540 | prev_saved_doc_string[from] != 037;) | |
3541 | { | |
3542 | int c = prev_saved_doc_string[from++]; | |
3543 | if (c == 1) | |
3544 | { | |
3545 | c = prev_saved_doc_string[from++]; | |
3546 | if (c == 1) | |
3547 | prev_saved_doc_string[to++] = c; | |
3548 | else if (c == '0') | |
3549 | prev_saved_doc_string[to++] = 0; | |
3550 | else if (c == '_') | |
3551 | prev_saved_doc_string[to++] = 037; | |
3552 | } | |
3553 | else | |
3554 | prev_saved_doc_string[to++] = c; | |
3555 | } | |
3556 | ||
8792be66 KH |
3557 | return make_unibyte_string (prev_saved_doc_string |
3558 | + start, | |
3559 | to - start); | |
c15cfd1f | 3560 | } |
b2a30870 | 3561 | else |
8792be66 | 3562 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3563 | } |
3564 | ||
821d417e RS |
3565 | return val; |
3566 | } | |
336d4a9c | 3567 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3568 | } |
336d4a9c | 3569 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3570 | } |
3571 | tem = (read_pure && flag <= 0 | |
3572 | ? pure_cons (elt, Qnil) | |
3573 | : Fcons (elt, Qnil)); | |
265a9e55 | 3574 | if (!NILP (tail)) |
f5df591a | 3575 | XSETCDR (tail, tem); |
078e7b4a JB |
3576 | else |
3577 | val = tem; | |
3578 | tail = tem; | |
3579 | if (defunflag < 0) | |
3580 | defunflag = EQ (elt, Qdefun); | |
3581 | else if (defunflag > 0) | |
3582 | read_pure = 1; | |
3583 | } | |
3584 | } | |
3585 | \f | |
078e7b4a JB |
3586 | Lisp_Object initial_obarray; |
3587 | ||
d007f5c8 RS |
3588 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3589 | ||
3590 | int oblookup_last_bucket_number; | |
3591 | ||
4a25e32a | 3592 | static int hash_string (const char *ptr, int len); |
d007f5c8 RS |
3593 | |
3594 | /* Get an error if OBARRAY is not an obarray. | |
3595 | If it is one, return it. */ | |
3596 | ||
078e7b4a | 3597 | Lisp_Object |
971de7fb | 3598 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3599 | { |
8878319c | 3600 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3601 | { |
3602 | /* If Vobarray is now invalid, force it to be valid. */ | |
3603 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3604 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3605 | } |
3606 | return obarray; | |
3607 | } | |
3608 | ||
d007f5c8 RS |
3609 | /* Intern the C string STR: return a symbol with that name, |
3610 | interned in the current obarray. */ | |
078e7b4a JB |
3611 | |
3612 | Lisp_Object | |
971de7fb | 3613 | intern (const char *str) |
078e7b4a JB |
3614 | { |
3615 | Lisp_Object tem; | |
3616 | int len = strlen (str); | |
153a17b7 | 3617 | Lisp_Object obarray; |
078e7b4a | 3618 | |
153a17b7 | 3619 | obarray = Vobarray; |
cfff016d | 3620 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3621 | obarray = check_obarray (obarray); |
e28552a4 | 3622 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3623 | if (SYMBOLP (tem)) |
078e7b4a | 3624 | return tem; |
87631ef7 | 3625 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3626 | } |
4ad679f9 | 3627 | |
5e2327cf DN |
3628 | Lisp_Object |
3629 | intern_c_string (const char *str) | |
3630 | { | |
3631 | Lisp_Object tem; | |
3632 | int len = strlen (str); | |
3633 | Lisp_Object obarray; | |
3634 | ||
3635 | obarray = Vobarray; | |
3636 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) | |
3637 | obarray = check_obarray (obarray); | |
3638 | tem = oblookup (obarray, str, len, len); | |
3639 | if (SYMBOLP (tem)) | |
3640 | return tem; | |
3641 | ||
3642 | if (NILP (Vpurify_flag)) | |
3643 | /* Creating a non-pure string from a string literal not | |
3644 | implemented yet. We could just use make_string here and live | |
3645 | with the extra copy. */ | |
3646 | abort (); | |
3647 | ||
3648 | return Fintern (make_pure_c_string (str), obarray); | |
3649 | } | |
3650 | ||
4ad679f9 EN |
3651 | /* Create an uninterned symbol with name STR. */ |
3652 | ||
3653 | Lisp_Object | |
a8fe7202 | 3654 | make_symbol (const char *str) |
4ad679f9 EN |
3655 | { |
3656 | int len = strlen (str); | |
3657 | ||
a8fe7202 AS |
3658 | return Fmake_symbol (!NILP (Vpurify_flag) |
3659 | ? make_pure_string (str, len, len, 0) | |
3660 | : make_string (str, len)); | |
4ad679f9 | 3661 | } |
d007f5c8 | 3662 | \f |
078e7b4a | 3663 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3664 | doc: /* Return the canonical symbol whose name is STRING. |
3665 | If there is none, one is created by this function and returned. | |
3666 | A second optional argument specifies the obarray to use; | |
3667 | it defaults to the value of `obarray'. */) | |
5842a27b | 3668 | (Lisp_Object string, Lisp_Object obarray) |
078e7b4a JB |
3669 | { |
3670 | register Lisp_Object tem, sym, *ptr; | |
3671 | ||
265a9e55 | 3672 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3673 | obarray = check_obarray (obarray); |
3674 | ||
b7826503 | 3675 | CHECK_STRING (string); |
078e7b4a | 3676 | |
42a5b22f | 3677 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3678 | SCHARS (string), |
3679 | SBYTES (string)); | |
cfff016d | 3680 | if (!INTEGERP (tem)) |
078e7b4a JB |
3681 | return tem; |
3682 | ||
265a9e55 | 3683 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3684 | string = Fpurecopy (string); |
3685 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3686 | |
3687 | if (EQ (obarray, initial_obarray)) | |
3688 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3689 | else | |
3690 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3691 | |
d5db4077 | 3692 | if ((SREF (string, 0) == ':') |
a458d45d | 3693 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3694 | { |
3695 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3696 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3697 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3698 | } |
a0549832 | 3699 | |
078e7b4a | 3700 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3701 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3702 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3703 | else | |
3704 | XSYMBOL (sym)->next = 0; | |
3705 | *ptr = sym; | |
3706 | return sym; | |
3707 | } | |
3708 | ||
3709 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3710 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3711 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3712 | symbol is searched for. | |
3713 | A second optional argument specifies the obarray to use; | |
3714 | it defaults to the value of `obarray'. */) | |
5842a27b | 3715 | (Lisp_Object name, Lisp_Object obarray) |
078e7b4a | 3716 | { |
c2d47f4b | 3717 | register Lisp_Object tem, string; |
078e7b4a | 3718 | |
265a9e55 | 3719 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3720 | obarray = check_obarray (obarray); |
3721 | ||
b55048d4 GM |
3722 | if (!SYMBOLP (name)) |
3723 | { | |
b7826503 | 3724 | CHECK_STRING (name); |
c2d47f4b | 3725 | string = name; |
b55048d4 GM |
3726 | } |
3727 | else | |
c2d47f4b | 3728 | string = SYMBOL_NAME (name); |
078e7b4a | 3729 | |
42a5b22f | 3730 | tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3731 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3732 | return Qnil; | |
3733 | else | |
078e7b4a | 3734 | return tem; |
078e7b4a | 3735 | } |
d007f5c8 RS |
3736 | \f |
3737 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3738 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3739 | The value is t if a symbol was found and deleted, nil otherwise. | |
3740 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3741 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3742 | OBARRAY defaults to the value of the variable `obarray'. */) | |
5842a27b | 3743 | (Lisp_Object name, Lisp_Object obarray) |
d007f5c8 RS |
3744 | { |
3745 | register Lisp_Object string, tem; | |
3746 | int hash; | |
3747 | ||
3748 | if (NILP (obarray)) obarray = Vobarray; | |
3749 | obarray = check_obarray (obarray); | |
3750 | ||
3751 | if (SYMBOLP (name)) | |
d4c83cae | 3752 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3753 | else |
3754 | { | |
b7826503 | 3755 | CHECK_STRING (name); |
d007f5c8 RS |
3756 | string = name; |
3757 | } | |
3758 | ||
42a5b22f | 3759 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3760 | SCHARS (string), |
3761 | SBYTES (string)); | |
d007f5c8 RS |
3762 | if (INTEGERP (tem)) |
3763 | return Qnil; | |
3764 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3765 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3766 | return Qnil; | |
3767 | ||
8ab1650e SM |
3768 | /* There are plenty of other symbols which will screw up the Emacs |
3769 | session if we unintern them, as well as even more ways to use | |
3770 | `setq' or `fset' or whatnot to make the Emacs session | |
3771 | unusable. Let's not go down this silly road. --Stef */ | |
3772 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3773 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3774 | |
44c6c019 | 3775 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3776 | |
d007f5c8 RS |
3777 | hash = oblookup_last_bucket_number; |
3778 | ||
3779 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3780 | { |
3781 | if (XSYMBOL (tem)->next) | |
3782 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3783 | else | |
3784 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3785 | } | |
d007f5c8 RS |
3786 | else |
3787 | { | |
3788 | Lisp_Object tail, following; | |
3789 | ||
3790 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3791 | XSYMBOL (tail)->next; | |
3792 | tail = following) | |
3793 | { | |
3794 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3795 | if (EQ (following, tem)) | |
3796 | { | |
3797 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3798 | break; | |
3799 | } | |
3800 | } | |
3801 | } | |
3802 | ||
3803 | return Qt; | |
3804 | } | |
3805 | \f | |
3806 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3807 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3808 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3809 | |
3810 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3811 | |
3812 | Lisp_Object | |
40283062 | 3813 | oblookup (Lisp_Object obarray, register const char *ptr, EMACS_INT size, EMACS_INT size_byte) |
078e7b4a | 3814 | { |
7a70b397 RS |
3815 | int hash; |
3816 | int obsize; | |
078e7b4a JB |
3817 | register Lisp_Object tail; |
3818 | Lisp_Object bucket, tem; | |
3819 | ||
cfff016d | 3820 | if (!VECTORP (obarray) |
7c79a684 | 3821 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3822 | { |
3823 | obarray = check_obarray (obarray); | |
3824 | obsize = XVECTOR (obarray)->size; | |
3825 | } | |
519418b3 RS |
3826 | /* This is sometimes needed in the middle of GC. */ |
3827 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3828 | hash = hash_string (ptr, size_byte) % obsize; |
078e7b4a | 3829 | bucket = XVECTOR (obarray)->contents[hash]; |
d007f5c8 | 3830 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3831 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3832 | ; |
cfff016d | 3833 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3834 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3835 | else |
3836 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3837 | { |
d5db4077 KR |
3838 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3839 | && SCHARS (SYMBOL_NAME (tail)) == size | |
72af86bd | 3840 | && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) |
078e7b4a JB |
3841 | return tail; |
3842 | else if (XSYMBOL (tail)->next == 0) | |
3843 | break; | |
3844 | } | |
1805de4f | 3845 | XSETINT (tem, hash); |
078e7b4a JB |
3846 | return tem; |
3847 | } | |
3848 | ||
3849 | static int | |
4a25e32a | 3850 | hash_string (const char *ptr, int len) |
078e7b4a | 3851 | { |
4a25e32a PE |
3852 | register const char *p = ptr; |
3853 | register const char *end = p + len; | |
078e7b4a JB |
3854 | register unsigned char c; |
3855 | register int hash = 0; | |
3856 | ||
3857 | while (p != end) | |
3858 | { | |
3859 | c = *p++; | |
3860 | if (c >= 0140) c -= 40; | |
3861 | hash = ((hash<<3) + (hash>>28) + c); | |
3862 | } | |
3863 | return hash & 07777777777; | |
3864 | } | |
d007f5c8 | 3865 | \f |
078e7b4a | 3866 | void |
971de7fb | 3867 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a JB |
3868 | { |
3869 | register int i; | |
3870 | register Lisp_Object tail; | |
b7826503 | 3871 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3872 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3873 | { | |
3874 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3875 | if (SYMBOLP (tail)) |
078e7b4a JB |
3876 | while (1) |
3877 | { | |
3878 | (*fn) (tail, arg); | |
3879 | if (XSYMBOL (tail)->next == 0) | |
3880 | break; | |
1805de4f | 3881 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3882 | } |
3883 | } | |
3884 | } | |
3885 | ||
7d383292 | 3886 | static void |
971de7fb | 3887 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3888 | { |
3889 | call1 (function, sym); | |
3890 | } | |
3891 | ||
3892 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3893 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3894 | OBARRAY defaults to the value of `obarray'. */) | |
5842a27b | 3895 | (Lisp_Object function, Lisp_Object obarray) |
078e7b4a | 3896 | { |
265a9e55 | 3897 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3898 | obarray = check_obarray (obarray); |
3899 | ||
3900 | map_obarray (obarray, mapatoms_1, function); | |
3901 | return Qnil; | |
3902 | } | |
3903 | ||
5e88a39e | 3904 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3905 | |
3906 | void | |
971de7fb | 3907 | init_obarray (void) |
078e7b4a JB |
3908 | { |
3909 | Lisp_Object oblength; | |
078e7b4a | 3910 | |
baf69866 | 3911 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3912 | |
078e7b4a JB |
3913 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3914 | initial_obarray = Vobarray; | |
3915 | staticpro (&initial_obarray); | |
078e7b4a | 3916 | |
d67b4f80 | 3917 | Qunbound = Fmake_symbol (make_pure_c_string ("unbound")); |
ce5b453a SM |
3918 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
3919 | NILP (Vpurify_flag) check in intern_c_string. */ | |
3920 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
3921 | Qnil = intern_c_string ("nil"); | |
3922 | ||
3923 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
3924 | so those two need to be fixed manally. */ | |
3925 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); | |
078e7b4a | 3926 | XSYMBOL (Qunbound)->function = Qunbound; |
ce5b453a SM |
3927 | XSYMBOL (Qunbound)->plist = Qnil; |
3928 | /* XSYMBOL (Qnil)->function = Qunbound; */ | |
3929 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); | |
3930 | XSYMBOL (Qnil)->constant = 1; | |
3931 | XSYMBOL (Qnil)->plist = Qnil; | |
078e7b4a | 3932 | |
d67b4f80 | 3933 | Qt = intern_c_string ("t"); |
ce5b453a | 3934 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
44c6c019 | 3935 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3936 | |
3937 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3938 | Vpurify_flag = Qt; | |
3939 | ||
d67b4f80 | 3940 | Qvariable_documentation = intern_c_string ("variable-documentation"); |
0f73bb1c | 3941 | staticpro (&Qvariable_documentation); |
078e7b4a | 3942 | |
449fea39 | 3943 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3944 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3945 | } |
3946 | \f | |
3947 | void | |
971de7fb | 3948 | defsubr (struct Lisp_Subr *sname) |
078e7b4a JB |
3949 | { |
3950 | Lisp_Object sym; | |
d67b4f80 | 3951 | sym = intern_c_string (sname->symbol_name); |
5a6891e2 | 3952 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 3953 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3954 | } |
3955 | ||
3956 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3957 | void | |
3958 | defalias (sname, string) | |
3959 | struct Lisp_Subr *sname; | |
3960 | char *string; | |
3961 | { | |
3962 | Lisp_Object sym; | |
3963 | sym = intern (string); | |
1805de4f | 3964 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3965 | } |
3966 | #endif /* NOTDEF */ | |
3967 | ||
039c6cc3 GM |
3968 | /* Define an "integer variable"; a symbol whose value is forwarded to a |
3969 | C variable of type int. Sample call (munged w "xx" to fool make-docfile): | |
3970 | DEFxxVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 3971 | void |
ce5b453a SM |
3972 | defvar_int (struct Lisp_Intfwd *i_fwd, |
3973 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 3974 | { |
ce5b453a | 3975 | Lisp_Object sym; |
5e2327cf | 3976 | sym = intern_c_string (namestring); |
ce5b453a SM |
3977 | i_fwd->type = Lisp_Fwd_Int; |
3978 | i_fwd->intvar = address; | |
b9598260 | 3979 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
3980 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
3981 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
3982 | } |
3983 | ||
f0529b5b | 3984 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 3985 | nil if address contains 0. */ |
078e7b4a | 3986 | void |
ce5b453a SM |
3987 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
3988 | const char *namestring, int *address) | |
078e7b4a | 3989 | { |
ce5b453a | 3990 | Lisp_Object sym; |
5e2327cf | 3991 | sym = intern_c_string (namestring); |
ce5b453a SM |
3992 | b_fwd->type = Lisp_Fwd_Bool; |
3993 | b_fwd->boolvar = address; | |
b9598260 | 3994 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
3995 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
3996 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 3997 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3998 | } |
3999 | ||
1a0f90f7 KH |
4000 | /* Similar but define a variable whose value is the Lisp Object stored |
4001 | at address. Two versions: with and without gc-marking of the C | |
4002 | variable. The nopro version is used when that variable will be | |
4003 | gc-marked for some other reason, since marking the same slot twice | |
4004 | can cause trouble with strings. */ | |
078e7b4a | 4005 | void |
ce5b453a SM |
4006 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
4007 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4008 | { |
ce5b453a | 4009 | Lisp_Object sym; |
5e2327cf | 4010 | sym = intern_c_string (namestring); |
ce5b453a SM |
4011 | o_fwd->type = Lisp_Fwd_Obj; |
4012 | o_fwd->objvar = address; | |
b9598260 | 4013 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4014 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4015 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
4016 | } |
4017 | ||
078e7b4a | 4018 | void |
ce5b453a SM |
4019 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
4020 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4021 | { |
ce5b453a | 4022 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 4023 | staticpro (address); |
078e7b4a JB |
4024 | } |
4025 | ||
b9598260 | 4026 | |
950c215d | 4027 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 4028 | at a particular offset in the current kboard object. */ |
950c215d KH |
4029 | |
4030 | void | |
ce5b453a SM |
4031 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
4032 | const char *namestring, int offset) | |
950c215d | 4033 | { |
ce5b453a | 4034 | Lisp_Object sym; |
5e2327cf | 4035 | sym = intern_c_string (namestring); |
ce5b453a SM |
4036 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
4037 | ko_fwd->offset = offset; | |
b9598260 | 4038 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4039 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4040 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 4041 | } |
078e7b4a | 4042 | \f |
11938f10 KH |
4043 | /* Record the value of load-path used at the start of dumping |
4044 | so we can see if the site changed it later during dumping. */ | |
4045 | static Lisp_Object dump_path; | |
4046 | ||
d5b28a9d | 4047 | void |
971de7fb | 4048 | init_lread (void) |
078e7b4a | 4049 | { |
8ea90aa3 | 4050 | const char *normal; |
e73997a1 | 4051 | int turn_off_warning = 0; |
078e7b4a | 4052 | |
279499f0 | 4053 | /* Compute the default load-path. */ |
46947372 JB |
4054 | #ifdef CANNOT_DUMP |
4055 | normal = PATH_LOADSEARCH; | |
e065a56e | 4056 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
4057 | #else |
4058 | if (NILP (Vpurify_flag)) | |
4059 | normal = PATH_LOADSEARCH; | |
279499f0 | 4060 | else |
46947372 | 4061 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 4062 | |
46947372 JB |
4063 | /* In a dumped Emacs, we normally have to reset the value of |
4064 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
4065 | uses ../lisp, instead of the path of the installed elisp | |
4066 | libraries. However, if it appears that Vload_path was changed | |
4067 | from the default before dumping, don't override that value. */ | |
4746118a JB |
4068 | if (initialized) |
4069 | { | |
4746118a | 4070 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
4071 | { |
4072 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 4073 | if (!NILP (Vinstallation_directory)) |
80667d53 | 4074 | { |
3ddff138 RS |
4075 | Lisp_Object tem, tem1, sitelisp; |
4076 | ||
4077 | /* Remove site-lisp dirs from path temporarily and store | |
4078 | them in sitelisp, then conc them on at the end so | |
4079 | they're always first in path. */ | |
4080 | sitelisp = Qnil; | |
4081 | while (1) | |
4082 | { | |
4083 | tem = Fcar (Vload_path); | |
4084 | tem1 = Fstring_match (build_string ("site-lisp"), | |
4085 | tem, Qnil); | |
4086 | if (!NILP (tem1)) | |
4087 | { | |
4088 | Vload_path = Fcdr (Vload_path); | |
4089 | sitelisp = Fcons (tem, sitelisp); | |
4090 | } | |
4091 | else | |
4092 | break; | |
4093 | } | |
4094 | ||
74180aa4 | 4095 | /* Add to the path the lisp subdir of the |
3a3056e5 | 4096 | installation dir, if it exists. */ |
74180aa4 RS |
4097 | tem = Fexpand_file_name (build_string ("lisp"), |
4098 | Vinstallation_directory); | |
3a3056e5 RS |
4099 | tem1 = Ffile_exists_p (tem); |
4100 | if (!NILP (tem1)) | |
4101 | { | |
4102 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
4103 | { |
4104 | turn_off_warning = 1; | |
3ddff138 | 4105 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 4106 | } |
3a3056e5 RS |
4107 | } |
4108 | else | |
4109 | /* That dir doesn't exist, so add the build-time | |
4110 | Lisp dirs instead. */ | |
4111 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 4112 | |
9fbc0116 RS |
4113 | /* Add leim under the installation dir, if it exists. */ |
4114 | tem = Fexpand_file_name (build_string ("leim"), | |
4115 | Vinstallation_directory); | |
4116 | tem1 = Ffile_exists_p (tem); | |
4117 | if (!NILP (tem1)) | |
4118 | { | |
4119 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4120 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
4121 | } |
4122 | ||
88852d45 | 4123 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
4124 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4125 | Vinstallation_directory); | |
4126 | tem1 = Ffile_exists_p (tem); | |
4127 | if (!NILP (tem1)) | |
4128 | { | |
4129 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4130 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 4131 | } |
0f337465 RS |
4132 | |
4133 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
4134 | and it is run from where it was built, add to load-path |
4135 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
4136 | |
4137 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4138 | { | |
33046fc9 RS |
4139 | Lisp_Object tem2; |
4140 | ||
0f337465 RS |
4141 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
4142 | Vinstallation_directory); | |
4143 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
4144 | |
4145 | /* Don't be fooled if they moved the entire source tree | |
4146 | AFTER dumping Emacs. If the build directory is indeed | |
4147 | different from the source dir, src/Makefile.in and | |
4148 | src/Makefile will not be found together. */ | |
4149 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4150 | Vinstallation_directory); | |
4151 | tem2 = Ffile_exists_p (tem); | |
4152 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4153 | { |
4154 | tem = Fexpand_file_name (build_string ("lisp"), | |
4155 | Vsource_directory); | |
4156 | ||
4157 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4158 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4159 | |
9fbc0116 RS |
4160 | tem = Fexpand_file_name (build_string ("leim"), |
4161 | Vsource_directory); | |
4162 | ||
4163 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4164 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4165 | |
0f337465 RS |
4166 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4167 | Vsource_directory); | |
4168 | ||
4169 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4170 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4171 | } |
4172 | } | |
66b7b0fe | 4173 | if (!NILP (sitelisp) && !no_site_lisp) |
3ddff138 | 4174 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); |
80667d53 RS |
4175 | } |
4176 | } | |
4746118a JB |
4177 | } |
4178 | else | |
11938f10 | 4179 | { |
7b396c6c RS |
4180 | /* NORMAL refers to the lisp dir in the source directory. */ |
4181 | /* We used to add ../lisp at the front here, but | |
4182 | that caused trouble because it was copied from dump_path | |
88852d45 | 4183 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4184 | It should be unnecessary. */ |
4185 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4186 | dump_path = Vload_path; |
4187 | } | |
46947372 | 4188 | #endif |
279499f0 | 4189 | |
9735b9ce | 4190 | #if (!(defined (WINDOWSNT) || (defined (HAVE_NS)))) |
177c0ea7 JB |
4191 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4192 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4193 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
9e2a2647 | 4194 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
317073d5 | 4195 | |
078e7b4a | 4196 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4197 | if (!turn_off_warning) |
4198 | { | |
4199 | Lisp_Object path_tail; | |
078e7b4a | 4200 | |
e73997a1 RS |
4201 | for (path_tail = Vload_path; |
4202 | !NILP (path_tail); | |
c1d497be | 4203 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4204 | { |
4205 | Lisp_Object dirfile; | |
4206 | dirfile = Fcar (path_tail); | |
4207 | if (STRINGP (dirfile)) | |
4208 | { | |
4209 | dirfile = Fdirectory_file_name (dirfile); | |
42a5b22f | 4210 | if (access (SSDATA (dirfile), 0) < 0) |
85496b8c | 4211 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4212 | XCAR (path_tail)); |
e73997a1 RS |
4213 | } |
4214 | } | |
4215 | } | |
9e2a2647 | 4216 | #endif /* !(WINDOWSNT || HAVE_NS) */ |
46947372 JB |
4217 | |
4218 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4219 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4220 | #ifndef CANNOT_DUMP |
46947372 JB |
4221 | if (NILP (Vpurify_flag) |
4222 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4223 | #endif |
279499f0 | 4224 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4225 | |
4226 | Vvalues = Qnil; | |
4227 | ||
078e7b4a | 4228 | load_in_progress = 0; |
4e53f562 | 4229 | Vload_file_name = Qnil; |
d2c6be7f RS |
4230 | |
4231 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4232 | |
4233 | Vstandard_input = Qt; | |
f74b0705 | 4234 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4235 | } |
4236 | ||
85496b8c | 4237 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4238 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4239 | |
d5b28a9d | 4240 | void |
a8fe7202 | 4241 | dir_warning (const char *format, Lisp_Object dirname) |
85496b8c RS |
4242 | { |
4243 | char *buffer | |
d5db4077 | 4244 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4245 | |
d5db4077 KR |
4246 | fprintf (stderr, format, SDATA (dirname)); |
4247 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4248 | /* Don't log the warning before we've initialized!! */ |
4249 | if (initialized) | |
4250 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4251 | } |
4252 | ||
078e7b4a | 4253 | void |
971de7fb | 4254 | syms_of_lread (void) |
078e7b4a JB |
4255 | { |
4256 | defsubr (&Sread); | |
4257 | defsubr (&Sread_from_string); | |
4258 | defsubr (&Sintern); | |
4259 | defsubr (&Sintern_soft); | |
d007f5c8 | 4260 | defsubr (&Sunintern); |
971a4293 | 4261 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4262 | defsubr (&Sload); |
228d4b1c | 4263 | defsubr (&Seval_buffer); |
078e7b4a JB |
4264 | defsubr (&Seval_region); |
4265 | defsubr (&Sread_char); | |
4266 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4267 | defsubr (&Sread_event); |
078e7b4a JB |
4268 | defsubr (&Sget_file_char); |
4269 | defsubr (&Smapatoms); | |
86d00812 | 4270 | defsubr (&Slocate_file_internal); |
078e7b4a | 4271 | |
29208e82 | 4272 | DEFVAR_LISP ("obarray", Vobarray, |
5de38842 PJ |
4273 | doc: /* Symbol table for use by `intern' and `read'. |
4274 | It is a vector whose length ought to be prime for best results. | |
4275 | The vector's contents don't make sense if examined from Lisp programs; | |
4276 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a | 4277 | |
29208e82 | 4278 | DEFVAR_LISP ("values", Vvalues, |
5de38842 PJ |
4279 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4280 | Order is reverse chronological. */); | |
078e7b4a | 4281 | |
29208e82 | 4282 | DEFVAR_LISP ("standard-input", Vstandard_input, |
5de38842 PJ |
4283 | doc: /* Stream for read to get input from. |
4284 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4285 | Vstandard_input = Qt; |
4286 | ||
29208e82 | 4287 | DEFVAR_LISP ("read-with-symbol-positions", Vread_with_symbol_positions, |
abb13b09 CW |
4288 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. |
4289 | ||
4290 | If this variable is a buffer, then only forms read from that buffer | |
4291 | will be added to `read-symbol-positions-list'. | |
4292 | If this variable is t, then all read forms will be added. | |
4293 | The effect of all other values other than nil are not currently | |
4294 | defined, although they may be in the future. | |
4295 | ||
4296 | The positions are relative to the last call to `read' or | |
4297 | `read-from-string'. It is probably a bad idea to set this variable at | |
4298 | the toplevel; bind it instead. */); | |
4299 | Vread_with_symbol_positions = Qnil; | |
4300 | ||
29208e82 | 4301 | DEFVAR_LISP ("read-symbol-positions-list", Vread_symbol_positions_list, |
d6567030 | 4302 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4303 | This variable is modified during calls to `read' or |
4304 | `read-from-string', but only when `read-with-symbol-positions' is | |
4305 | non-nil. | |
4306 | ||
4307 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4308 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4309 | symbol from the position where `read' or `read-from-string' started. |
4310 | ||
4311 | Note that a symbol will appear multiple times in this list, if it was | |
4312 | read multiple times. The list is in the same order as the symbols | |
4313 | were read in. */); | |
177c0ea7 | 4314 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4315 | |
29208e82 | 4316 | DEFVAR_LISP ("read-circle", Vread_circle, |
91f68422 CY |
4317 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); |
4318 | Vread_circle = Qt; | |
4319 | ||
29208e82 | 4320 | DEFVAR_LISP ("load-path", Vload_path, |
5de38842 PJ |
4321 | doc: /* *List of directories to search for files to load. |
4322 | Each element is a string (directory name) or nil (try default directory). | |
4323 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4324 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4325 | |
29208e82 | 4326 | DEFVAR_LISP ("load-suffixes", Vload_suffixes, |
971a4293 LT |
4327 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4328 | This list should not include the empty string. | |
4329 | `load' and related functions try to append these suffixes, in order, | |
4330 | to the specified file name if a Lisp suffix is allowed or required. */); | |
a4ada374 DN |
4331 | Vload_suffixes = Fcons (make_pure_c_string (".elc"), |
4332 | Fcons (make_pure_c_string (".el"), Qnil)); | |
29208e82 | 4333 | DEFVAR_LISP ("load-file-rep-suffixes", Vload_file_rep_suffixes, |
971a4293 LT |
4334 | doc: /* List of suffixes that indicate representations of \ |
4335 | the same file. | |
4336 | This list should normally start with the empty string. | |
4337 | ||
4338 | Enabling Auto Compression mode appends the suffixes in | |
4339 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4340 | mode removes them again. `load' and related functions use this list to | |
4341 | determine whether they should look for compressed versions of a file | |
4342 | and, if so, which suffixes they should try to append to the file name | |
4343 | in order to do so. However, if you want to customize which suffixes | |
4344 | the loading functions recognize as compression suffixes, you should | |
4345 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4346 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4347 | |
29208e82 | 4348 | DEFVAR_BOOL ("load-in-progress", load_in_progress, |
e0f24100 | 4349 | doc: /* Non-nil if inside of `load'. */); |
d67b4f80 | 4350 | Qload_in_progress = intern_c_string ("load-in-progress"); |
2baf5e76 | 4351 | staticpro (&Qload_in_progress); |
078e7b4a | 4352 | |
29208e82 | 4353 | DEFVAR_LISP ("after-load-alist", Vafter_load_alist, |
5de38842 | 4354 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4355 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4356 | ||
4357 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4358 | a symbol \(a feature name). | |
4359 | ||
4360 | When `load' is run and the file-name argument matches an element's | |
4361 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4362 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4363 | ||
4364 | An error in FORMS does not undo the load, but does prevent execution of | |
4365 | the rest of the FORMS. */); | |
078e7b4a JB |
4366 | Vafter_load_alist = Qnil; |
4367 | ||
29208e82 | 4368 | DEFVAR_LISP ("load-history", Vload_history, |
4801c5fa CY |
4369 | doc: /* Alist mapping loaded file names to symbols and features. |
4370 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4371 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4372 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4373 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4374 | for symbols and features not associated with any file. | |
4375 | ||
4376 | The remaining ENTRIES in the alist element describe the functions and | |
4377 | variables defined in that file, the features provided, and the | |
4378 | features required. Each entry has the form `(provide . FEATURE)', | |
4379 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
4380 | `(defface . SYMBOL)', or `(t . SYMBOL)'. In addition, an entry `(t | |
4381 | . SYMBOL)' may precede an entry `(defun . FUNCTION)', and means that | |
4382 | SYMBOL was an autoload before this file redefined it as a function. | |
0fc213e9 | 4383 | |
b502a9a1 RS |
4384 | During preloading, the file name recorded is relative to the main Lisp |
4385 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4386 | Vload_history = Qnil; |
4387 | ||
29208e82 | 4388 | DEFVAR_LISP ("load-file-name", Vload_file_name, |
5de38842 | 4389 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4390 | Vload_file_name = Qnil; |
4391 | ||
29208e82 | 4392 | DEFVAR_LISP ("user-init-file", Vuser_init_file, |
5de38842 | 4393 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4394 | If the file loaded had extension `.elc', and the corresponding source file |
4395 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4396 | by functions like `custom-save-all' which edit the init file. |
4397 | While Emacs loads and evaluates the init file, value is the real name | |
4398 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4399 | Vuser_init_file = Qnil; |
4400 | ||
29208e82 | 4401 | DEFVAR_LISP ("current-load-list", Vcurrent_load_list, |
5de38842 | 4402 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4403 | Vcurrent_load_list = Qnil; |
4404 | ||
29208e82 | 4405 | DEFVAR_LISP ("load-read-function", Vload_read_function, |
5de38842 PJ |
4406 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4407 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4408 | Vload_read_function = Qnil; |
4409 | ||
29208e82 | 4410 | DEFVAR_LISP ("load-source-file-function", Vload_source_file_function, |
9b33a603 | 4411 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4412 | This function is for doing code conversion before reading the source file. |
4413 | If nil, loading is done without any code conversion. | |
4414 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4415 | FULLNAME is the full name of FILE. | |
4416 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4417 | Vload_source_file_function = Qnil; |
4418 | ||
29208e82 | 4419 | DEFVAR_BOOL ("load-force-doc-strings", load_force_doc_strings, |
5de38842 PJ |
4420 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4421 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4422 | load_force_doc_strings = 0; |
4423 | ||
29208e82 | 4424 | DEFVAR_BOOL ("load-convert-to-unibyte", load_convert_to_unibyte, |
5de38842 PJ |
4425 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4426 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4427 | and is not meant for users to change. */); | |
94e554db RS |
4428 | load_convert_to_unibyte = 0; |
4429 | ||
29208e82 | 4430 | DEFVAR_LISP ("source-directory", Vsource_directory, |
5de38842 PJ |
4431 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4432 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4433 | Vsource_directory |
4434 | = Fexpand_file_name (build_string ("../"), | |
4435 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4436 | ||
29208e82 | 4437 | DEFVAR_LISP ("preloaded-file-list", Vpreloaded_file_list, |
5de38842 | 4438 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4439 | Vpreloaded_file_list = Qnil; |
4440 | ||
29208e82 | 4441 | DEFVAR_LISP ("byte-boolean-vars", Vbyte_boolean_vars, |
5de38842 | 4442 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4443 | Vbyte_boolean_vars = Qnil; |
4444 | ||
29208e82 | 4445 | DEFVAR_BOOL ("load-dangerous-libraries", load_dangerous_libraries, |
5de38842 PJ |
4446 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4447 | Some versions of XEmacs use different byte codes than Emacs. These | |
4448 | incompatible byte codes can make Emacs crash when it tries to execute | |
4449 | them. */); | |
da84f340 GM |
4450 | load_dangerous_libraries = 0; |
4451 | ||
29208e82 | 4452 | DEFVAR_BOOL ("force-load-messages", force_load_messages, |
beb0b7f9 EZ |
4453 | doc: /* Non-nil means force printing messages when loading Lisp files. |
4454 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4455 | force_load_messages = 0; | |
4456 | ||
29208e82 | 4457 | DEFVAR_LISP ("bytecomp-version-regexp", Vbytecomp_version_regexp, |
5de38842 PJ |
4458 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4459 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4460 | from the file, and matches them against this regular expression. | |
4461 | When the regular expression matches, the file is considered to be safe | |
4462 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4463 | Vbytecomp_version_regexp |
d67b4f80 | 4464 | = make_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4465 | |
b9598260 SM |
4466 | Qlexical_binding = intern ("lexical-binding"); |
4467 | staticpro (&Qlexical_binding); | |
8f1d2ef6 | 4468 | DEFVAR_LISP ("lexical-binding", Vlexical_binding, |
b9598260 SM |
4469 | doc: /* If non-nil, use lexical binding when evaluating code. |
4470 | This only applies to code evaluated by `eval-buffer' and `eval-region'. | |
4471 | This variable is automatically set from the file variables of an interpreted | |
2c302df3 | 4472 | lisp file read using `load'. */); |
b9598260 SM |
4473 | Fmake_variable_buffer_local (Qlexical_binding); |
4474 | ||
29208e82 | 4475 | DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list, |
3f39f996 RS |
4476 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); |
4477 | Veval_buffer_list = Qnil; | |
4478 | ||
29208e82 | 4479 | DEFVAR_LISP ("old-style-backquotes", Vold_style_backquotes, |
5aa273b0 SM |
4480 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); |
4481 | Vold_style_backquotes = Qnil; | |
d67b4f80 | 4482 | Qold_style_backquotes = intern_c_string ("old-style-backquotes"); |
1d064697 | 4483 | staticpro (&Qold_style_backquotes); |
5aa273b0 | 4484 | |
a90ba1e2 KH |
4485 | /* Vsource_directory was initialized in init_lread. */ |
4486 | ||
d2c6be7f RS |
4487 | load_descriptor_list = Qnil; |
4488 | staticpro (&load_descriptor_list); | |
4489 | ||
d67b4f80 | 4490 | Qcurrent_load_list = intern_c_string ("current-load-list"); |
8a1f1537 RS |
4491 | staticpro (&Qcurrent_load_list); |
4492 | ||
d67b4f80 | 4493 | Qstandard_input = intern_c_string ("standard-input"); |
078e7b4a JB |
4494 | staticpro (&Qstandard_input); |
4495 | ||
d67b4f80 | 4496 | Qread_char = intern_c_string ("read-char"); |
078e7b4a JB |
4497 | staticpro (&Qread_char); |
4498 | ||
d67b4f80 | 4499 | Qget_file_char = intern_c_string ("get-file-char"); |
078e7b4a | 4500 | staticpro (&Qget_file_char); |
7bd279cd | 4501 | |
d67b4f80 | 4502 | Qget_emacs_mule_file_char = intern_c_string ("get-emacs-mule-file-char"); |
8792be66 KH |
4503 | staticpro (&Qget_emacs_mule_file_char); |
4504 | ||
d67b4f80 | 4505 | Qload_force_doc_strings = intern_c_string ("load-force-doc-strings"); |
8792be66 KH |
4506 | staticpro (&Qload_force_doc_strings); |
4507 | ||
d67b4f80 | 4508 | Qbackquote = intern_c_string ("`"); |
17634846 | 4509 | staticpro (&Qbackquote); |
d67b4f80 | 4510 | Qcomma = intern_c_string (","); |
17634846 | 4511 | staticpro (&Qcomma); |
d67b4f80 | 4512 | Qcomma_at = intern_c_string (",@"); |
17634846 | 4513 | staticpro (&Qcomma_at); |
d67b4f80 | 4514 | Qcomma_dot = intern_c_string (",."); |
17634846 RS |
4515 | staticpro (&Qcomma_dot); |
4516 | ||
d67b4f80 | 4517 | Qinhibit_file_name_operation = intern_c_string ("inhibit-file-name-operation"); |
74549846 RS |
4518 | staticpro (&Qinhibit_file_name_operation); |
4519 | ||
d67b4f80 | 4520 | Qascii_character = intern_c_string ("ascii-character"); |
7bd279cd | 4521 | staticpro (&Qascii_character); |
c2225d00 | 4522 | |
d67b4f80 | 4523 | Qfunction = intern_c_string ("function"); |
2b6cae0c RS |
4524 | staticpro (&Qfunction); |
4525 | ||
d67b4f80 | 4526 | Qload = intern_c_string ("load"); |
c2225d00 | 4527 | staticpro (&Qload); |
20ea2964 | 4528 | |
d67b4f80 | 4529 | Qload_file_name = intern_c_string ("load-file-name"); |
20ea2964 | 4530 | staticpro (&Qload_file_name); |
11938f10 | 4531 | |
d67b4f80 | 4532 | Qeval_buffer_list = intern_c_string ("eval-buffer-list"); |
3f39f996 RS |
4533 | staticpro (&Qeval_buffer_list); |
4534 | ||
d67b4f80 | 4535 | Qfile_truename = intern_c_string ("file-truename"); |
6bb6da3e AM |
4536 | staticpro (&Qfile_truename) ; |
4537 | ||
aa56f361 SM |
4538 | Qdir_ok = intern_c_string ("dir-ok"); |
4539 | staticpro (&Qdir_ok); | |
4540 | ||
d67b4f80 | 4541 | Qdo_after_load_evaluation = intern_c_string ("do-after-load-evaluation"); |
6bb6da3e AM |
4542 | staticpro (&Qdo_after_load_evaluation) ; |
4543 | ||
11938f10 | 4544 | staticpro (&dump_path); |
4ad679f9 EN |
4545 | |
4546 | staticpro (&read_objects); | |
4547 | read_objects = Qnil; | |
9e062b6c | 4548 | staticpro (&seen_list); |
f153db13 | 4549 | seen_list = Qnil; |
177c0ea7 | 4550 | |
7ee3bd7b GM |
4551 | Vloads_in_progress = Qnil; |
4552 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4553 | |
d67b4f80 | 4554 | Qhash_table = intern_c_string ("hash-table"); |
f19a0f5b | 4555 | staticpro (&Qhash_table); |
d67b4f80 | 4556 | Qdata = intern_c_string ("data"); |
f19a0f5b | 4557 | staticpro (&Qdata); |
d67b4f80 | 4558 | Qtest = intern_c_string ("test"); |
f19a0f5b | 4559 | staticpro (&Qtest); |
d67b4f80 | 4560 | Qsize = intern_c_string ("size"); |
f19a0f5b | 4561 | staticpro (&Qsize); |
d67b4f80 | 4562 | Qweakness = intern_c_string ("weakness"); |
f19a0f5b | 4563 | staticpro (&Qweakness); |
d67b4f80 | 4564 | Qrehash_size = intern_c_string ("rehash-size"); |
f19a0f5b | 4565 | staticpro (&Qrehash_size); |
d67b4f80 | 4566 | Qrehash_threshold = intern_c_string ("rehash-threshold"); |
f19a0f5b | 4567 | staticpro (&Qrehash_threshold); |
078e7b4a | 4568 | } |