Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
039c6cc3 | 2 | |
acaf905b | 3 | Copyright (C) 1985-1989, 1993-1995, 1997-2012 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> |
9660f5fc | 27 | #include <limits.h> /* For CHAR_BIT. */ |
b3e6f69c | 28 | #include <setjmp.h> |
39adff0d | 29 | #include <stat-time.h> |
078e7b4a | 30 | #include "lisp.h" |
95384e1e | 31 | #include "intervals.h" |
1571601b | 32 | #include "character.h" |
e5560ff7 | 33 | #include "buffer.h" |
fe0e03f3 | 34 | #include "charset.h" |
8792be66 | 35 | #include "coding.h" |
57bda87a | 36 | #include <epaths.h> |
078e7b4a | 37 | #include "commands.h" |
e37c0805 | 38 | #include "keyboard.h" |
428a555e | 39 | #include "frame.h" |
7bd279cd | 40 | #include "termhooks.h" |
eb191db2 | 41 | #include "coding.h" |
66cd0949 | 42 | #include "blockinput.h" |
078e7b4a | 43 | |
79051982 | 44 | #ifdef MSDOS |
79051982 RS |
45 | #include "msdos.h" |
46 | #endif | |
47 | ||
9e059e3f GM |
48 | #ifdef HAVE_NS |
49 | #include "nsterm.h" | |
50 | #endif | |
51 | ||
c1a2f60a | 52 | #include <unistd.h> |
078e7b4a | 53 | #include <math.h> |
078e7b4a | 54 | |
c011e9a5 RS |
55 | #ifdef HAVE_SETLOCALE |
56 | #include <locale.h> | |
57 | #endif /* HAVE_SETLOCALE */ | |
58 | ||
bcdec28b | 59 | #include <fcntl.h> |
f7d279f0 | 60 | |
79cf851c | 61 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
62 | #define file_offset off_t |
63 | #define file_tell ftello | |
64 | #else | |
65 | #define file_offset long | |
66 | #define file_tell ftell | |
67 | #endif | |
68 | ||
48def666 | 69 | /* Hash table read constants. */ |
955cbe7b PE |
70 | static Lisp_Object Qhash_table, Qdata; |
71 | static Lisp_Object Qtest, Qsize; | |
72 | static Lisp_Object Qweakness; | |
73 | static Lisp_Object Qrehash_size; | |
74 | static Lisp_Object Qrehash_threshold; | |
75 | ||
76 | static Lisp_Object Qread_char, Qget_file_char, Qcurrent_load_list; | |
77 | Lisp_Object Qstandard_input; | |
29208e82 | 78 | Lisp_Object Qvariable_documentation; |
955cbe7b | 79 | static Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 80 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
955cbe7b PE |
81 | static Lisp_Object Qinhibit_file_name_operation; |
82 | static Lisp_Object Qeval_buffer_list; | |
83 | static Lisp_Object Qlexical_binding; | |
84 | static Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ | |
7bd279cd | 85 | |
8792be66 KH |
86 | /* Used instead of Qget_file_char while loading *.elc files compiled |
87 | by Emacs 21 or older. */ | |
88 | static Lisp_Object Qget_emacs_mule_file_char; | |
89 | ||
90 | static Lisp_Object Qload_force_doc_strings; | |
91 | ||
b9598260 | 92 | extern Lisp_Object Qinternal_interpreter_environment; |
078e7b4a | 93 | |
2baf5e76 | 94 | static Lisp_Object Qload_in_progress; |
ece435a5 | 95 | |
4ad679f9 EN |
96 | /* The association list of objects read with the #n=object form. |
97 | Each member of the list has the form (n . object), and is used to | |
98 | look up the object for the corresponding #n# construct. | |
99 | It must be set to nil before all top-level calls to read0. */ | |
1e3890d1 | 100 | static Lisp_Object read_objects; |
4ad679f9 | 101 | |
8792be66 KH |
102 | /* Nonzero means READCHAR should read bytes one by one (not character) |
103 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
104 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
105 | static int load_each_byte; | |
106 | ||
d2c6be7f RS |
107 | /* List of descriptors now open for Fload. */ |
108 | static Lisp_Object load_descriptor_list; | |
109 | ||
b2a30870 | 110 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
111 | static FILE *instream; |
112 | ||
b2a30870 | 113 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
d311d28c PE |
114 | static ptrdiff_t read_from_string_index; |
115 | static ptrdiff_t read_from_string_index_byte; | |
116 | static ptrdiff_t read_from_string_limit; | |
17634846 | 117 | |
abb13b09 | 118 | /* Number of characters read in the current call to Fread or |
48def666 | 119 | Fread_from_string. */ |
da43f021 | 120 | static EMACS_INT readchar_count; |
6f7f43d5 | 121 | |
c15cfd1f | 122 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
123 | static char *saved_doc_string; |
124 | /* Length of buffer allocated in saved_doc_string. */ | |
bfbbd7e7 | 125 | static ptrdiff_t saved_doc_string_size; |
b2a30870 | 126 | /* Length of actual data in saved_doc_string. */ |
bfbbd7e7 | 127 | static ptrdiff_t saved_doc_string_length; |
b2a30870 | 128 | /* This is the file position that string came from. */ |
68c45bf0 | 129 | static file_offset saved_doc_string_position; |
b2a30870 | 130 | |
c15cfd1f RS |
131 | /* This contains the previous string skipped with #@. |
132 | We copy it from saved_doc_string when a new string | |
133 | is put in saved_doc_string. */ | |
134 | static char *prev_saved_doc_string; | |
135 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
bfbbd7e7 | 136 | static ptrdiff_t prev_saved_doc_string_size; |
c15cfd1f | 137 | /* Length of actual data in prev_saved_doc_string. */ |
bfbbd7e7 | 138 | static ptrdiff_t prev_saved_doc_string_length; |
c15cfd1f | 139 | /* This is the file position that string came from. */ |
68c45bf0 | 140 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 141 | |
17634846 RS |
142 | /* Nonzero means inside a new-style backquote |
143 | with no surrounding parentheses. | |
144 | Fread initializes this to zero, so we need not specbind it | |
145 | or worry about what happens to it when there is an error. */ | |
146 | static int new_backquote_flag; | |
29208e82 | 147 | static Lisp_Object Qold_style_backquotes; |
7ee3bd7b GM |
148 | |
149 | /* A list of file names for files being loaded in Fload. Used to | |
150 | check for recursive loads. */ | |
151 | ||
9942fa0c | 152 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 153 | |
f57e2426 J |
154 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
155 | Lisp_Object); | |
8792be66 | 156 | |
defb1411 | 157 | static void readevalloop (Lisp_Object, FILE*, Lisp_Object, int, |
f57e2426 J |
158 | Lisp_Object, Lisp_Object, |
159 | Lisp_Object, Lisp_Object); | |
160 | static Lisp_Object load_unwind (Lisp_Object); | |
161 | static Lisp_Object load_descriptor_unwind (Lisp_Object); | |
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 | |
48def666 | 188 | means that there's no unread character. */ |
8792be66 KH |
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 | |
d311d28c | 210 | ptrdiff_t 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 | |
d311d28c | 239 | ptrdiff_t 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); |
d311d28c PE |
373 | ptrdiff_t charpos = BUF_PT (b); |
374 | ptrdiff_t bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 375 | |
4b4deea2 | 376 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 377 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 378 | else |
8792be66 | 379 | bytepos--; |
d7760ca9 | 380 | |
cffc6f3b | 381 | SET_BUF_PT_BOTH (b, charpos - 1, bytepos); |
d7760ca9 | 382 | } |
cfff016d | 383 | else if (MARKERP (readcharfun)) |
d7760ca9 | 384 | { |
bed23cb2 | 385 | struct buffer *b = XMARKER (readcharfun)->buffer; |
d311d28c | 386 | ptrdiff_t 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 |
48def666 | 448 | /* Interrupted reads have been observed while reading over the network. */ |
d85d3839 MB |
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 | { | |
51d8b30e | 605 | double duration = extract_float (seconds); |
d35af63c | 606 | EMACS_TIME wait_time = EMACS_TIME_FROM_DOUBLE (duration); |
e9a9ae03 | 607 | end_time = add_emacs_time (current_emacs_time (), wait_time); |
50e48299 CY |
608 | } |
609 | ||
251bc578 | 610 | /* Read until we get an acceptable event. */ |
f42be754 | 611 | retry: |
88852d45 | 612 | do |
251bc578 KL |
613 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
614 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 615 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 616 | |
cfff016d | 617 | if (BUFFERP (val)) |
6c82d689 KH |
618 | goto retry; |
619 | ||
f42be754 | 620 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 621 | character. This is better than signaling an error just because |
f42be754 JB |
622 | the last characters were typed to a separate minibuffer frame, |
623 | for example. Eventually, some code which can deal with | |
624 | switch-frame events will read it and process it. */ | |
625 | if (no_switch_frame | |
626 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 627 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
628 | { |
629 | delayed_switch_frame = val; | |
630 | goto retry; | |
631 | } | |
632 | ||
50e48299 | 633 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
634 | { |
635 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 636 | if (SYMBOLP (val)) |
f42be754 | 637 | { |
95384e1e | 638 | Lisp_Object tem, tem1; |
f42be754 JB |
639 | tem = Fget (val, Qevent_symbol_element_mask); |
640 | if (!NILP (tem)) | |
641 | { | |
642 | tem1 = Fget (Fcar (tem), Qascii_character); | |
643 | /* Merge this symbol's modifier bits | |
644 | with the ASCII equivalent of its basic code. */ | |
645 | if (!NILP (tem1)) | |
baf69866 | 646 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
647 | } |
648 | } | |
177c0ea7 | 649 | |
f42be754 | 650 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 651 | if (!INTEGERP (val)) |
f42be754 JB |
652 | { |
653 | if (error_nonascii) | |
654 | { | |
1ec84625 | 655 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
656 | error ("Non-character input-event"); |
657 | } | |
658 | else | |
659 | goto retry; | |
660 | } | |
661 | } | |
662 | ||
663 | if (! NILP (delayed_switch_frame)) | |
664 | unread_switch_frame = delayed_switch_frame; | |
665 | ||
67868d27 PJ |
666 | #if 0 |
667 | ||
5dbf89bc | 668 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
669 | if (display_hourglass_p) |
670 | start_hourglass (); | |
5dbf89bc | 671 | #endif |
67868d27 PJ |
672 | |
673 | #endif | |
674 | ||
f42be754 | 675 | return val; |
f42be754 JB |
676 | } |
677 | ||
a7ca3326 | 678 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
679 | doc: /* Read a character from the command input (keyboard or macro). |
680 | It is returned as a number. | |
fb26c2af KH |
681 | If the character has modifiers, they are resolved and reflected to the |
682 | character code if possible (e.g. C-SPC -> 0). | |
683 | ||
5de38842 PJ |
684 | If the user generates an event which is not a character (i.e. a mouse |
685 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
686 | exception, switch-frame events are put off until non-character events |
687 | can be read. | |
5de38842 PJ |
688 | If you want to read non-character events, or ignore them, call |
689 | `read-event' or `read-char-exclusive' instead. | |
690 | ||
691 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
692 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
693 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
694 | is used for reading a character. |
695 | If the optional argument SECONDS is non-nil, it should be a number | |
696 | specifying the maximum number of seconds to wait for input. If no | |
697 | input arrives in that time, return nil. SECONDS may be a | |
698 | floating-point value. */) | |
5842a27b | 699 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 700 | { |
fb26c2af | 701 | Lisp_Object val; |
fb26c2af | 702 | |
bb49a192 RS |
703 | if (! NILP (prompt)) |
704 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 705 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
706 | |
707 | return (NILP (val) ? Qnil | |
708 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
709 | } |
710 | ||
a7ca3326 | 711 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
712 | doc: /* Read an event object from the input stream. |
713 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
714 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
715 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
716 | is used for reading a character. |
717 | If the optional argument SECONDS is non-nil, it should be a number | |
718 | specifying the maximum number of seconds to wait for input. If no | |
719 | input arrives in that time, return nil. SECONDS may be a | |
720 | floating-point value. */) | |
5842a27b | 721 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 722 | { |
bb49a192 RS |
723 | if (! NILP (prompt)) |
724 | message_with_string ("%s", prompt, 0); | |
50e48299 | 725 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
726 | } |
727 | ||
50e48299 | 728 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
729 | doc: /* Read a character from the command input (keyboard or macro). |
730 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
731 | If the character has modifiers, they are resolved and reflected to the |
732 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
733 | |
734 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
735 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
736 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
737 | is used for reading a character. |
738 | If the optional argument SECONDS is non-nil, it should be a number | |
739 | specifying the maximum number of seconds to wait for input. If no | |
740 | input arrives in that time, return nil. SECONDS may be a | |
741 | floating-point value. */) | |
5842a27b | 742 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 743 | { |
fb26c2af | 744 | Lisp_Object val; |
fb26c2af | 745 | |
bb49a192 RS |
746 | if (! NILP (prompt)) |
747 | message_with_string ("%s", prompt, 0); | |
66c410ce | 748 | |
fb26c2af | 749 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
750 | |
751 | return (NILP (val) ? Qnil | |
752 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 753 | } |
078e7b4a JB |
754 | |
755 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 | 756 | doc: /* Don't use this yourself. */) |
5842a27b | 757 | (void) |
078e7b4a JB |
758 | { |
759 | register Lisp_Object val; | |
66cd0949 | 760 | BLOCK_INPUT; |
1805de4f | 761 | XSETINT (val, getc (instream)); |
66cd0949 | 762 | UNBLOCK_INPUT; |
078e7b4a JB |
763 | return val; |
764 | } | |
da84f340 GM |
765 | |
766 | ||
550a625e | 767 | \f |
b9598260 SM |
768 | |
769 | /* Return true if the lisp code read using READCHARFUN defines a non-nil | |
770 | `lexical-binding' file variable. After returning, the stream is | |
771 | positioned following the first line, if it is a comment, otherwise | |
772 | nothing is read. */ | |
773 | ||
774 | static int | |
c566235d | 775 | lisp_file_lexically_bound_p (Lisp_Object readcharfun) |
b9598260 SM |
776 | { |
777 | int ch = READCHAR; | |
778 | if (ch != ';') | |
779 | /* The first line isn't a comment, just give up. */ | |
780 | { | |
781 | UNREAD (ch); | |
782 | return 0; | |
783 | } | |
784 | else | |
785 | /* Look for an appropriate file-variable in the first line. */ | |
786 | { | |
787 | int rv = 0; | |
788 | enum { | |
789 | NOMINAL, AFTER_FIRST_DASH, AFTER_ASTERIX, | |
790 | } beg_end_state = NOMINAL; | |
791 | int in_file_vars = 0; | |
792 | ||
7200d79c SM |
793 | #define UPDATE_BEG_END_STATE(ch) \ |
794 | if (beg_end_state == NOMINAL) \ | |
795 | beg_end_state = (ch == '-' ? AFTER_FIRST_DASH : NOMINAL); \ | |
796 | else if (beg_end_state == AFTER_FIRST_DASH) \ | |
797 | beg_end_state = (ch == '*' ? AFTER_ASTERIX : NOMINAL); \ | |
798 | else if (beg_end_state == AFTER_ASTERIX) \ | |
799 | { \ | |
800 | if (ch == '-') \ | |
801 | in_file_vars = !in_file_vars; \ | |
802 | beg_end_state = NOMINAL; \ | |
b9598260 SM |
803 | } |
804 | ||
805 | /* Skip until we get to the file vars, if any. */ | |
806 | do | |
807 | { | |
808 | ch = READCHAR; | |
809 | UPDATE_BEG_END_STATE (ch); | |
810 | } | |
811 | while (!in_file_vars && ch != '\n' && ch != EOF); | |
812 | ||
813 | while (in_file_vars) | |
814 | { | |
06a0259a | 815 | char var[100], val[100]; |
3c346cc3 | 816 | unsigned i; |
b9598260 SM |
817 | |
818 | ch = READCHAR; | |
819 | ||
820 | /* Read a variable name. */ | |
821 | while (ch == ' ' || ch == '\t') | |
822 | ch = READCHAR; | |
823 | ||
06a0259a | 824 | i = 0; |
db7a0b4f | 825 | while (ch != ':' && ch != '\n' && ch != EOF && in_file_vars) |
b9598260 | 826 | { |
06a0259a PE |
827 | if (i < sizeof var - 1) |
828 | var[i++] = ch; | |
b9598260 SM |
829 | UPDATE_BEG_END_STATE (ch); |
830 | ch = READCHAR; | |
831 | } | |
7200d79c | 832 | |
db7a0b4f | 833 | /* Stop scanning if no colon was found before end marker. */ |
ad3a2b41 | 834 | if (!in_file_vars || ch == '\n' || ch == EOF) |
db7a0b4f AS |
835 | break; |
836 | ||
06a0259a PE |
837 | while (i > 0 && (var[i - 1] == ' ' || var[i - 1] == '\t')) |
838 | i--; | |
839 | var[i] = '\0'; | |
b9598260 SM |
840 | |
841 | if (ch == ':') | |
842 | { | |
843 | /* Read a variable value. */ | |
844 | ch = READCHAR; | |
845 | ||
846 | while (ch == ' ' || ch == '\t') | |
847 | ch = READCHAR; | |
848 | ||
06a0259a | 849 | i = 0; |
b9598260 SM |
850 | while (ch != ';' && ch != '\n' && ch != EOF && in_file_vars) |
851 | { | |
06a0259a PE |
852 | if (i < sizeof val - 1) |
853 | val[i++] = ch; | |
b9598260 SM |
854 | UPDATE_BEG_END_STATE (ch); |
855 | ch = READCHAR; | |
856 | } | |
857 | if (! in_file_vars) | |
ad3a2b41 | 858 | /* The value was terminated by an end-marker, which remove. */ |
06a0259a PE |
859 | i -= 3; |
860 | while (i > 0 && (val[i - 1] == ' ' || val[i - 1] == '\t')) | |
861 | i--; | |
862 | val[i] = '\0'; | |
b9598260 SM |
863 | |
864 | if (strcmp (var, "lexical-binding") == 0) | |
865 | /* This is it... */ | |
866 | { | |
867 | rv = (strcmp (val, "nil") != 0); | |
868 | break; | |
869 | } | |
870 | } | |
871 | } | |
872 | ||
873 | while (ch != '\n' && ch != EOF) | |
874 | ch = READCHAR; | |
875 | ||
876 | return rv; | |
877 | } | |
878 | } | |
b9598260 | 879 | \f |
8792be66 | 880 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 881 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
882 | safe to load. Only files compiled with Emacs are safe to load. |
883 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
884 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
885 | |
886 | static int | |
971de7fb | 887 | safe_to_load_p (int fd) |
da84f340 GM |
888 | { |
889 | char buf[512]; | |
890 | int nbytes, i; | |
891 | int safe_p = 1; | |
8f924df7 | 892 | int version = 1; |
da84f340 GM |
893 | |
894 | /* Read the first few bytes from the file, and look for a line | |
895 | specifying the byte compiler version used. */ | |
896 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
897 | if (nbytes > 0) | |
898 | { | |
899 | buf[nbytes] = '\0'; | |
900 | ||
901 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 902 | with NUL bytes following it, but note the version. */ |
da84f340 | 903 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 904 | if (i == 4) |
8792be66 | 905 | version = buf[i]; |
da84f340 | 906 | |
e6eb4e9e | 907 | if (i >= nbytes |
927f12da | 908 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, |
d923b542 | 909 | buf + i, nbytes - i) < 0) |
da84f340 GM |
910 | safe_p = 0; |
911 | } | |
1da3b9e4 DL |
912 | if (safe_p) |
913 | safe_p = version; | |
da84f340 GM |
914 | |
915 | lseek (fd, 0, SEEK_SET); | |
916 | return safe_p; | |
917 | } | |
918 | ||
919 | ||
7ee3bd7b GM |
920 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
921 | after loading a file successfully. */ | |
922 | ||
923 | static Lisp_Object | |
971de7fb | 924 | record_load_unwind (Lisp_Object old) |
7ee3bd7b GM |
925 | { |
926 | return Vloads_in_progress = old; | |
927 | } | |
928 | ||
164c8bfe RS |
929 | /* This handler function is used via internal_condition_case_1. */ |
930 | ||
931 | static Lisp_Object | |
971de7fb | 932 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
933 | { |
934 | return Qnil; | |
935 | } | |
7ee3bd7b | 936 | |
1d064697 | 937 | static Lisp_Object |
971de7fb | 938 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
939 | { |
940 | if (!NILP (Vold_style_backquotes)) | |
941 | { | |
b636b4c1 | 942 | Lisp_Object args[2]; |
18a4a65e | 943 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
944 | args[1] = file; |
945 | Fmessage (2, args); | |
946 | } | |
947 | return Qnil; | |
948 | } | |
949 | ||
a7ca3326 | 950 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
971a4293 LT |
951 | doc: /* Return the suffixes that `load' should try if a suffix is \ |
952 | required. | |
953 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
5842a27b | 954 | (void) |
971a4293 LT |
955 | { |
956 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
957 | while (CONSP (suffixes)) | |
958 | { | |
959 | Lisp_Object exts = Vload_file_rep_suffixes; | |
960 | suffix = XCAR (suffixes); | |
961 | suffixes = XCDR (suffixes); | |
962 | while (CONSP (exts)) | |
963 | { | |
964 | ext = XCAR (exts); | |
965 | exts = XCDR (exts); | |
966 | lst = Fcons (concat2 (suffix, ext), lst); | |
967 | } | |
968 | } | |
969 | return Fnreverse (lst); | |
970 | } | |
971 | ||
a7ca3326 | 972 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
973 | doc: /* Execute a file of Lisp code named FILE. |
974 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 975 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 976 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 977 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 978 | This function searches the directories in `load-path'. |
971a4293 | 979 | |
5de38842 | 980 | If optional second arg NOERROR is non-nil, |
971a4293 | 981 | report no error if FILE doesn't exist. |
5de38842 | 982 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
983 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
984 | overrides that). | |
5de38842 | 985 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 986 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 987 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
988 | the suffix `.elc' or `.el'; don't accept just FILE unless |
989 | it ends in one of those suffixes or includes a directory name. | |
990 | ||
991 | If this function fails to find a file, it may look for different | |
992 | representations of that file before trying another file. | |
993 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
994 | to the file name. Emacs uses this feature mainly to find compressed | |
995 | versions of files when Auto Compression mode is enabled. | |
996 | ||
997 | The exact suffixes that this function tries out, in the exact order, | |
998 | are given by the value of the variable `load-file-rep-suffixes' if | |
999 | NOSUFFIX is non-nil and by the return value of the function | |
1000 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
1001 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
1002 | and then the former. | |
0fc213e9 RS |
1003 | |
1004 | Loading a file records its definitions, and its `provide' and | |
1005 | `require' calls, in an element of `load-history' whose | |
1006 | car is the file name loaded. See `load-history'. | |
1007 | ||
c7926fe2 EZ |
1008 | While the file is in the process of being loaded, the variable |
1009 | `load-in-progress' is non-nil and the variable `load-file-name' | |
1010 | is bound to the file's name. | |
1011 | ||
971a4293 | 1012 | Return t if the file exists and loads successfully. */) |
5842a27b | 1013 | (Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage, Lisp_Object nosuffix, Lisp_Object must_suffix) |
078e7b4a JB |
1014 | { |
1015 | register FILE *stream; | |
1016 | register int fd = -1; | |
d311d28c | 1017 | ptrdiff_t count = SPECPDL_INDEX (); |
6bb6da3e AM |
1018 | struct gcpro gcpro1, gcpro2, gcpro3; |
1019 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
1020 | /* 1 means we printed the ".el is newer" message. */ |
1021 | int newer = 0; | |
1022 | /* 1 means we are loading a compiled file. */ | |
1023 | int compiled = 0; | |
c2225d00 | 1024 | Lisp_Object handler; |
456c67a4 | 1025 | int safe_p = 1; |
8ea90aa3 | 1026 | const char *fmode = "r"; |
6bb6da3e | 1027 | Lisp_Object tmp[2]; |
8792be66 KH |
1028 | int version; |
1029 | ||
317073d5 | 1030 | #ifdef DOS_NT |
229ba775 | 1031 | fmode = "rt"; |
317073d5 | 1032 | #endif /* DOS_NT */ |
078e7b4a | 1033 | |
b7826503 | 1034 | CHECK_STRING (file); |
078e7b4a | 1035 | |
c2225d00 | 1036 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1037 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1038 | handler = Ffind_file_name_handler (file, Qload); | |
1039 | if (!NILP (handler)) | |
1040 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1041 | |
07a0bda3 RS |
1042 | /* Do this after the handler to avoid |
1043 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1044 | (Below here, we care only whether they are nil or not.) |
1045 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1046 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1047 | everywhere, it accidentally stayed here. Since then, enough people |
1048 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1049 | that it seemed risky to remove. */ | |
164c8bfe RS |
1050 | if (! NILP (noerror)) |
1051 | { | |
1052 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1053 | Qt, load_error_handler); | |
1054 | if (NILP (file)) | |
1055 | return Qnil; | |
1056 | } | |
1057 | else | |
1058 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1059 | |
07a0bda3 | 1060 | |
078e7b4a | 1061 | /* Avoid weird lossage with null string as arg, |
48def666 | 1062 | since it would try to load a directory as a Lisp file. */ |
82cb60d3 | 1063 | if (SBYTES (file) > 0) |
078e7b4a | 1064 | { |
82cb60d3 | 1065 | ptrdiff_t size = SBYTES (file); |
211f7dcd | 1066 | |
0fc213e9 RS |
1067 | found = Qnil; |
1068 | GCPRO2 (file, found); | |
211f7dcd RS |
1069 | |
1070 | if (! NILP (must_suffix)) | |
1071 | { | |
1072 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1073 | if (size > 3 | |
42a5b22f | 1074 | && !strcmp (SSDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1075 | must_suffix = Qnil; |
1076 | else if (size > 4 | |
42a5b22f | 1077 | && !strcmp (SSDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1078 | must_suffix = Qnil; |
1079 | /* Don't insist on adding a suffix | |
1080 | if the argument includes a directory name. */ | |
1081 | else if (! NILP (Ffile_name_directory (file))) | |
1082 | must_suffix = Qnil; | |
1083 | } | |
1084 | ||
f0a50954 | 1085 | fd = openp (Vload_path, file, |
e61b9b87 | 1086 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1087 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1088 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1089 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1090 | tmp))), |
86d00812 | 1091 | &found, Qnil); |
5a6e5452 | 1092 | UNGCPRO; |
078e7b4a JB |
1093 | } |
1094 | ||
96dc0f4e | 1095 | if (fd == -1) |
078e7b4a | 1096 | { |
265a9e55 | 1097 | if (NILP (noerror)) |
336d4a9c KS |
1098 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1099 | return Qnil; | |
078e7b4a JB |
1100 | } |
1101 | ||
ba0d1195 | 1102 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1103 | if (EQ (Qt, Vuser_init_file)) |
1104 | Vuser_init_file = found; | |
1105 | ||
96dc0f4e MB |
1106 | /* If FD is -2, that means openp found a magic file. */ |
1107 | if (fd == -2) | |
74549846 | 1108 | { |
5e24a1f7 KH |
1109 | if (NILP (Fequal (found, file))) |
1110 | /* If FOUND is a different file name from FILE, | |
1111 | find its handler even if we have already inhibited | |
1112 | the `load' operation on FILE. */ | |
1113 | handler = Ffind_file_name_handler (found, Qt); | |
1114 | else | |
1115 | handler = Ffind_file_name_handler (found, Qload); | |
1116 | if (! NILP (handler)) | |
1117 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
35774242 EZ |
1118 | #ifdef DOS_NT |
1119 | /* Tramp has to deal with semi-broken packages that prepend | |
1120 | drive letters to remote files. For that reason, Tramp | |
1121 | catches file operations that test for file existence, which | |
1122 | makes openp think X:/foo.elc files are remote. However, | |
1123 | Tramp does not catch `load' operations for such files, so we | |
1124 | end up with a nil as the `load' handler above. If we would | |
1125 | continue with fd = -2, we will behave wrongly, and in | |
1126 | particular try reading a .elc file in the "rt" mode instead | |
1127 | of "rb". See bug #9311 for the results. To work around | |
1128 | this, we try to open the file locally, and go with that if it | |
1129 | succeeds. */ | |
1130 | fd = emacs_open (SSDATA (ENCODE_FILE (found)), O_RDONLY, 0); | |
1131 | if (fd == -1) | |
1132 | fd = -2; | |
1133 | #endif | |
74549846 RS |
1134 | } |
1135 | ||
550a625e GM |
1136 | /* Check if we're stuck in a recursive load cycle. |
1137 | ||
1138 | 2000-09-21: It's not possible to just check for the file loaded | |
1139 | being a member of Vloads_in_progress. This fails because of the | |
1140 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1141 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1142 | leads to a certain amount of ``normal'' recursion. |
1143 | ||
1144 | Also, just loading a file recursively is not always an error in | |
1145 | the general case; the second load may do something different. */ | |
3ba6fd9a | 1146 | { |
0902fe45 | 1147 | int load_count = 0; |
3ba6fd9a RS |
1148 | Lisp_Object tem; |
1149 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
0902fe45 | 1150 | if (!NILP (Fequal (found, XCAR (tem))) && (++load_count > 3)) |
8fc45744 JB |
1151 | { |
1152 | if (fd >= 0) | |
1153 | emacs_close (fd); | |
1154 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1155 | } | |
3ba6fd9a RS |
1156 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1157 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1158 | } | |
7ee3bd7b | 1159 | |
b9598260 SM |
1160 | /* All loads are by default dynamic, unless the file itself specifies |
1161 | otherwise using a file-variable in the first line. This is bound here | |
1162 | so that it takes effect whether or not we use | |
1163 | Vload_source_file_function. */ | |
1164 | specbind (Qlexical_binding, Qnil); | |
1165 | ||
48def666 | 1166 | /* Get the name for load-history. */ |
6bb6da3e AM |
1167 | hist_file_name = (! NILP (Vpurify_flag) |
1168 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1169 | tmp[1] = Ffile_name_nondirectory (found), | |
1170 | tmp)) | |
1171 | : found) ; | |
1172 | ||
8792be66 | 1173 | version = -1; |
1bb9a689 | 1174 | |
88852d45 | 1175 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1176 | specbind (Qold_style_backquotes, Qnil); |
1177 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1178 | ||
72af86bd | 1179 | if (!memcmp (SDATA (found) + SBYTES (found) - 4, ".elc", 4) |
74327f7a | 1180 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1181 | /* Load .elc files directly, but not when they are |
1182 | remote and have no handler! */ | |
078e7b4a | 1183 | { |
96dc0f4e | 1184 | if (fd != -2) |
da84f340 | 1185 | { |
96dc0f4e MB |
1186 | struct stat s1, s2; |
1187 | int result; | |
da84f340 | 1188 | |
6bb6da3e | 1189 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1190 | |
8792be66 KH |
1191 | if (version < 0 |
1192 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1193 | { |
1194 | safe_p = 0; | |
1195 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1196 | { |
1197 | if (fd >= 0) | |
1198 | emacs_close (fd); | |
1199 | error ("File `%s' was not compiled in Emacs", | |
1200 | SDATA (found)); | |
1201 | } | |
beb0b7f9 | 1202 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1203 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1204 | } | |
04fc68e7 | 1205 | |
96dc0f4e MB |
1206 | compiled = 1; |
1207 | ||
eb191db2 EZ |
1208 | efound = ENCODE_FILE (found); |
1209 | ||
26fbf20b | 1210 | #ifdef DOS_NT |
96dc0f4e | 1211 | fmode = "rb"; |
26fbf20b | 1212 | #endif /* DOS_NT */ |
e5533da6 PE |
1213 | result = stat (SSDATA (efound), &s1); |
1214 | if (result == 0) | |
1215 | { | |
1216 | SSET (efound, SBYTES (efound) - 1, 0); | |
1217 | result = stat (SSDATA (efound), &s2); | |
1218 | SSET (efound, SBYTES (efound) - 1, 'c'); | |
1219 | } | |
eb191db2 | 1220 | |
39adff0d PE |
1221 | if (result == 0 |
1222 | && EMACS_TIME_LT (get_stat_mtime (&s1), get_stat_mtime (&s2))) | |
96dc0f4e MB |
1223 | { |
1224 | /* Make the progress messages mention that source is newer. */ | |
1225 | newer = 1; | |
04fc68e7 | 1226 | |
96dc0f4e | 1227 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1228 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1229 | { |
0fc213e9 RS |
1230 | Lisp_Object msg_file; |
1231 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1232 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1233 | msg_file, 1); |
714d8c39 | 1234 | } |
96dc0f4e | 1235 | } |
0fc213e9 | 1236 | UNGCPRO; |
51ac6f83 | 1237 | } |
078e7b4a | 1238 | } |
fe0e03f3 KH |
1239 | else |
1240 | { | |
1241 | /* We are loading a source file (*.el). */ | |
1242 | if (!NILP (Vload_source_file_function)) | |
1243 | { | |
7ee3bd7b | 1244 | Lisp_Object val; |
96dc0f4e MB |
1245 | |
1246 | if (fd >= 0) | |
68c45bf0 | 1247 | emacs_close (fd); |
6bb6da3e | 1248 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1249 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1250 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1251 | return unbind_to (count, val); |
fe0e03f3 KH |
1252 | } |
1253 | } | |
078e7b4a | 1254 | |
6bb6da3e | 1255 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1256 | |
229ba775 | 1257 | #ifdef WINDOWSNT |
eb191db2 | 1258 | efound = ENCODE_FILE (found); |
35774242 EZ |
1259 | /* If we somehow got here with fd == -2, meaning the file is deemed |
1260 | to be remote, don't even try to reopen the file locally; just | |
1261 | force a failure instead. */ | |
1262 | if (fd >= 0) | |
1263 | { | |
1264 | emacs_close (fd); | |
1265 | stream = fopen (SSDATA (efound), fmode); | |
1266 | } | |
1267 | else | |
1268 | stream = NULL; | |
229ba775 EZ |
1269 | #else /* not WINDOWSNT */ |
1270 | stream = fdopen (fd, fmode); | |
1271 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1272 | if (stream == 0) |
1273 | { | |
68c45bf0 | 1274 | emacs_close (fd); |
d5db4077 | 1275 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1276 | } |
1277 | ||
4b104c41 | 1278 | if (! NILP (Vpurify_flag)) |
5e617bc2 | 1279 | Vpreloaded_file_list = Fcons (Fpurecopy (file), Vpreloaded_file_list); |
4b104c41 | 1280 | |
beb0b7f9 | 1281 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1282 | { |
da84f340 GM |
1283 | if (!safe_p) |
1284 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1285 | file, 1); | |
1286 | else if (!compiled) | |
e28552a4 | 1287 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1288 | else if (newer) |
e28552a4 RS |
1289 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1290 | file, 1); | |
db5cae4b | 1291 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1292 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1293 | } |
078e7b4a | 1294 | |
c04d9e70 | 1295 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1296 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1297 | specbind (Qload_file_name, found); |
74549846 | 1298 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1299 | load_descriptor_list |
1300 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
2baf5e76 | 1301 | specbind (Qload_in_progress, Qt); |
b9598260 SM |
1302 | |
1303 | instream = stream; | |
1304 | if (lisp_file_lexically_bound_p (Qget_file_char)) | |
1305 | Fset (Qlexical_binding, Qt); | |
1306 | ||
ab2a47e1 | 1307 | if (! version || version >= 22) |
b883cdb2 | 1308 | readevalloop (Qget_file_char, stream, hist_file_name, |
defb1411 | 1309 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1310 | else |
1311 | { | |
1312 | /* We can't handle a file which was compiled with | |
1313 | byte-compile-dynamic by older version of Emacs. */ | |
1314 | specbind (Qload_force_doc_strings, Qt); | |
defb1411 | 1315 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, |
768d4533 | 1316 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1317 | } |
078e7b4a JB |
1318 | unbind_to (count, Qnil); |
1319 | ||
48def666 | 1320 | /* Run any eval-after-load forms for this file. */ |
428b13d6 | 1321 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1322 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1323 | ||
078e7b4a JB |
1324 | UNGCPRO; |
1325 | ||
97dead2d | 1326 | xfree (saved_doc_string); |
b2a30870 RS |
1327 | saved_doc_string = 0; |
1328 | saved_doc_string_size = 0; | |
1329 | ||
70fdbb46 | 1330 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1331 | prev_saved_doc_string = 0; |
1332 | prev_saved_doc_string_size = 0; | |
1333 | ||
beb0b7f9 | 1334 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1335 | { |
da84f340 GM |
1336 | if (!safe_p) |
1337 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1338 | file, 1); | |
1339 | else if (!compiled) | |
e28552a4 | 1340 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1341 | else if (newer) |
e28552a4 RS |
1342 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1343 | file, 1); | |
db5cae4b | 1344 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1345 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1346 | } |
7ee3bd7b | 1347 | |
078e7b4a JB |
1348 | return Qt; |
1349 | } | |
1350 | ||
1351 | static Lisp_Object | |
48def666 | 1352 | load_unwind (Lisp_Object arg) /* Used as unwind-protect function in load. */ |
078e7b4a | 1353 | { |
ebfe97a2 KS |
1354 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1355 | if (stream != NULL) | |
66cd0949 YM |
1356 | { |
1357 | BLOCK_INPUT; | |
1358 | fclose (stream); | |
1359 | UNBLOCK_INPUT; | |
1360 | } | |
078e7b4a JB |
1361 | return Qnil; |
1362 | } | |
1363 | ||
d2c6be7f | 1364 | static Lisp_Object |
971de7fb | 1365 | load_descriptor_unwind (Lisp_Object oldlist) |
d2c6be7f RS |
1366 | { |
1367 | load_descriptor_list = oldlist; | |
838abf56 | 1368 | return Qnil; |
d2c6be7f RS |
1369 | } |
1370 | ||
1371 | /* Close all descriptors in use for Floads. | |
1372 | This is used when starting a subprocess. */ | |
1373 | ||
1374 | void | |
971de7fb | 1375 | close_load_descs (void) |
d2c6be7f | 1376 | { |
f3849f25 | 1377 | #ifndef WINDOWSNT |
d2c6be7f | 1378 | Lisp_Object tail; |
9beb8baa | 1379 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1380 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1381 | #endif |
d2c6be7f | 1382 | } |
078e7b4a JB |
1383 | \f |
1384 | static int | |
971de7fb | 1385 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1386 | { |
4b2dd274 | 1387 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1388 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1389 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1390 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1391 | } |
1392 | ||
86d00812 SM |
1393 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1394 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1395 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1396 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1397 | file name when searching. | |
1398 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1399 | PREDICATE can also be an integer to pass to the access(2) function, | |
aa56f361 SM |
1400 | in which case file-name-handlers are ignored. |
1401 | This function will normally skip directories, so if you want it to find | |
1402 | directories, make sure the PREDICATE function returns `dir-ok' for them. */) | |
5842a27b | 1403 | (Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate) |
86d00812 SM |
1404 | { |
1405 | Lisp_Object file; | |
1406 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1407 | if (NILP (predicate) && fd > 0) | |
1408 | close (fd); | |
1409 | return file; | |
1410 | } | |
1411 | ||
aa56f361 | 1412 | static Lisp_Object Qdir_ok; |
86d00812 | 1413 | |
078e7b4a JB |
1414 | /* Search for a file whose name is STR, looking in directories |
1415 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1416 | On success, returns a file descriptor. On failure, returns -1. |
1417 | ||
e61b9b87 | 1418 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1419 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1420 | |
86d00812 SM |
1421 | PREDICATE non-nil means don't open the files, |
1422 | just look for one that satisfies the predicate. In this case, | |
1423 | returns 1 on success. The predicate can be a lisp function or | |
1424 | an integer to pass to `access' (in which case file-name-handlers | |
1425 | are ignored). | |
078e7b4a JB |
1426 | |
1427 | If STOREPTR is nonzero, it points to a slot where the name of | |
1428 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1429 | nil is stored there on failure. |
1430 | ||
96dc0f4e | 1431 | If the file we find is remote, return -2 |
86d00812 | 1432 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1433 | |
1434 | int | |
971de7fb | 1435 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate) |
078e7b4a JB |
1436 | { |
1437 | register int fd; | |
d311d28c | 1438 | ptrdiff_t fn_size = 100; |
078e7b4a JB |
1439 | char buf[100]; |
1440 | register char *fn = buf; | |
1441 | int absolute = 0; | |
d311d28c | 1442 | ptrdiff_t want_length; |
74549846 | 1443 | Lisp_Object filename; |
078e7b4a | 1444 | struct stat st; |
eb191db2 EZ |
1445 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1446 | Lisp_Object string, tail, encoded_fn; | |
d311d28c | 1447 | ptrdiff_t max_suffix_len = 0; |
e61b9b87 | 1448 | |
6f8eafd1 SM |
1449 | CHECK_STRING (str); |
1450 | ||
e61b9b87 SM |
1451 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1452 | { | |
f5df591a | 1453 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1454 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1455 | SBYTES (XCAR (tail))); |
e61b9b87 | 1456 | } |
078e7b4a | 1457 | |
8b9d426a | 1458 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1459 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1460 | ||
078e7b4a JB |
1461 | if (storeptr) |
1462 | *storeptr = Qnil; | |
1463 | ||
1464 | if (complete_filename_p (str)) | |
1465 | absolute = 1; | |
1466 | ||
e61b9b87 | 1467 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1468 | { |
e61b9b87 | 1469 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a | 1470 | if (!complete_filename_p (filename)) |
48def666 | 1471 | /* If there are non-absolute elts in PATH (eg "."). */ |
078e7b4a | 1472 | /* Of course, this could conceivably lose if luser sets |
48def666 | 1473 | default-directory to be something non-absolute... */ |
078e7b4a | 1474 | { |
4b4deea2 | 1475 | filename = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
078e7b4a | 1476 | if (!complete_filename_p (filename)) |
48def666 | 1477 | /* Give up on this path element! */ |
078e7b4a JB |
1478 | continue; |
1479 | } | |
1480 | ||
640ee02d | 1481 | /* Calculate maximum length of any filename made from |
078e7b4a | 1482 | this path element/specified file name and any possible suffix. */ |
640ee02d PE |
1483 | want_length = max_suffix_len + SBYTES (filename); |
1484 | if (fn_size <= want_length) | |
38182d90 | 1485 | fn = alloca (fn_size = 100 + want_length); |
078e7b4a | 1486 | |
078e7b4a | 1487 | /* Loop over suffixes. */ |
a74d1c97 | 1488 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1489 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1490 | { |
cb1caeaf | 1491 | ptrdiff_t fnlen, lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1492 | Lisp_Object handler; |
eb191db2 | 1493 | int exists; |
078e7b4a | 1494 | |
c49afcd7 RS |
1495 | /* Concatenate path element/specified name with the suffix. |
1496 | If the directory starts with /:, remove that. */ | |
e99a530f PE |
1497 | int prefixlen = ((SCHARS (filename) > 2 |
1498 | && SREF (filename, 0) == '/' | |
1499 | && SREF (filename, 1) == ':') | |
1500 | ? 2 : 0); | |
1501 | fnlen = SBYTES (filename) - prefixlen; | |
1502 | memcpy (fn, SDATA (filename) + prefixlen, fnlen); | |
1503 | memcpy (fn + fnlen, SDATA (XCAR (tail)), lsuffix + 1); | |
1504 | fnlen += lsuffix; | |
74549846 | 1505 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1506 | /* We used to only check for handlers on non-absolute file names: |
1507 | if (absolute) | |
1508 | handler = Qnil; | |
1509 | else | |
1510 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1511 | It's not clear why that was the case and it breaks things like | |
1512 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
cb1caeaf | 1513 | string = make_string (fn, fnlen); |
4773b8ca | 1514 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1515 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1516 | { | |
1517 | if (NILP (predicate)) | |
1518 | exists = !NILP (Ffile_readable_p (string)); | |
1519 | else | |
aa56f361 SM |
1520 | { |
1521 | Lisp_Object tmp = call1 (predicate, string); | |
1522 | exists = !NILP (tmp) | |
1523 | && (EQ (tmp, Qdir_ok) | |
aa0f73d1 | 1524 | || NILP (Ffile_directory_p (string))); |
aa56f361 | 1525 | } |
74549846 RS |
1526 | |
1527 | if (exists) | |
078e7b4a JB |
1528 | { |
1529 | /* We succeeded; return this descriptor and filename. */ | |
1530 | if (storeptr) | |
eb191db2 | 1531 | *storeptr = string; |
5ef2a3c0 | 1532 | UNGCPRO; |
96dc0f4e | 1533 | return -2; |
74549846 RS |
1534 | } |
1535 | } | |
1536 | else | |
1537 | { | |
4b2dd274 | 1538 | const char *pfn; |
eb191db2 EZ |
1539 | |
1540 | encoded_fn = ENCODE_FILE (string); | |
42a5b22f | 1541 | pfn = SSDATA (encoded_fn); |
f68c809d | 1542 | exists = (stat (pfn, &st) == 0 && ! S_ISDIR (st.st_mode)); |
74549846 RS |
1543 | if (exists) |
1544 | { | |
1545 | /* Check that we can access or open it. */ | |
86d00812 | 1546 | if (NATNUMP (predicate)) |
d311d28c PE |
1547 | fd = (((XFASTINT (predicate) & ~INT_MAX) == 0 |
1548 | && access (pfn, XFASTINT (predicate)) == 0) | |
1549 | ? 1 : -1); | |
74549846 | 1550 | else |
eb191db2 | 1551 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1552 | |
1553 | if (fd >= 0) | |
1554 | { | |
1555 | /* We succeeded; return this descriptor and filename. */ | |
1556 | if (storeptr) | |
eb191db2 | 1557 | *storeptr = string; |
74549846 RS |
1558 | UNGCPRO; |
1559 | return fd; | |
1560 | } | |
078e7b4a JB |
1561 | } |
1562 | } | |
078e7b4a | 1563 | } |
5a6e5452 | 1564 | if (absolute) |
5ef2a3c0 | 1565 | break; |
078e7b4a JB |
1566 | } |
1567 | ||
5ef2a3c0 KH |
1568 | UNGCPRO; |
1569 | return -1; | |
078e7b4a JB |
1570 | } |
1571 | ||
1572 | \f | |
ae321d28 RS |
1573 | /* Merge the list we've accumulated of globals from the current input source |
1574 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1575 | the source has an associated file name or not. |
1576 | ||
1577 | FILENAME is the file name that we are loading from. | |
1578 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1579 | |
1580 | static void | |
971de7fb | 1581 | build_load_history (Lisp_Object filename, int entire) |
ae321d28 RS |
1582 | { |
1583 | register Lisp_Object tail, prev, newelt; | |
1584 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1585 | register int foundit = 0; |
ae321d28 RS |
1586 | |
1587 | tail = Vload_history; | |
1588 | prev = Qnil; | |
b502a9a1 | 1589 | |
86d00812 | 1590 | while (CONSP (tail)) |
ae321d28 | 1591 | { |
86d00812 | 1592 | tem = XCAR (tail); |
ae321d28 | 1593 | |
48def666 | 1594 | /* Find the feature's previous assoc list... */ |
b502a9a1 | 1595 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1596 | { |
1597 | foundit = 1; | |
1598 | ||
48def666 | 1599 | /* If we're loading the entire file, remove old data. */ |
b502a9a1 | 1600 | if (entire) |
86d00812 | 1601 | { |
ae321d28 | 1602 | if (NILP (prev)) |
86d00812 | 1603 | Vload_history = XCDR (tail); |
ae321d28 | 1604 | else |
86d00812 | 1605 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1606 | } |
1607 | ||
1608 | /* Otherwise, cons on new symbols that are not already members. */ | |
1609 | else | |
1610 | { | |
1611 | tem2 = Vcurrent_load_list; | |
1612 | ||
1613 | while (CONSP (tem2)) | |
1614 | { | |
86d00812 | 1615 | newelt = XCAR (tem2); |
ae321d28 | 1616 | |
d642e4f9 | 1617 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1618 | Fsetcar (tail, Fcons (XCAR (tem), |
1619 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1620 | |
86d00812 | 1621 | tem2 = XCDR (tem2); |
ae321d28 RS |
1622 | QUIT; |
1623 | } | |
1624 | } | |
1625 | } | |
1626 | else | |
1627 | prev = tail; | |
86d00812 | 1628 | tail = XCDR (tail); |
ae321d28 RS |
1629 | QUIT; |
1630 | } | |
1631 | ||
b502a9a1 RS |
1632 | /* If we're loading an entire file, cons the new assoc onto the |
1633 | front of load-history, the most-recently-loaded position. Also | |
1634 | do this if we didn't find an existing member for the file. */ | |
1635 | if (entire || !foundit) | |
8a1f1537 RS |
1636 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1637 | Vload_history); | |
ae321d28 RS |
1638 | } |
1639 | ||
94e554db | 1640 | static Lisp_Object |
971de7fb | 1641 | readevalloop_1 (Lisp_Object old) |
94e554db RS |
1642 | { |
1643 | load_convert_to_unibyte = ! NILP (old); | |
1644 | return Qnil; | |
1645 | } | |
1646 | ||
9c97398c GM |
1647 | /* Signal an `end-of-file' error, if possible with file name |
1648 | information. */ | |
1649 | ||
845ca893 | 1650 | static _Noreturn void |
971de7fb | 1651 | end_of_file_error (void) |
9c97398c | 1652 | { |
9c97398c | 1653 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1654 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1655 | |
336d4a9c | 1656 | xsignal0 (Qend_of_file); |
9c97398c GM |
1657 | } |
1658 | ||
94e554db | 1659 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1660 | for this invocation. |
4c03c46d | 1661 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1662 | |
1663 | START, END specify region to read in current buffer (from eval-region). | |
1664 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1665 | |
078e7b4a | 1666 | static void |
dd4c5104 DN |
1667 | readevalloop (Lisp_Object readcharfun, |
1668 | FILE *stream, | |
1669 | Lisp_Object sourcename, | |
dd4c5104 DN |
1670 | int printflag, |
1671 | Lisp_Object unibyte, Lisp_Object readfun, | |
1672 | Lisp_Object start, Lisp_Object end) | |
078e7b4a JB |
1673 | { |
1674 | register int c; | |
1675 | register Lisp_Object val; | |
d311d28c | 1676 | ptrdiff_t count = SPECPDL_INDEX (); |
0a37f512 | 1677 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1678 | struct buffer *b = 0; |
f38952fe | 1679 | int continue_reading_p; |
b9598260 | 1680 | Lisp_Object lex_bound; |
d11db2c8 RS |
1681 | /* Nonzero if reading an entire buffer. */ |
1682 | int whole_buffer = 0; | |
1683 | /* 1 on the first time around. */ | |
1684 | int first_sexp = 1; | |
1685 | ||
1686 | if (MARKERP (readcharfun)) | |
1687 | { | |
1688 | if (NILP (start)) | |
8878319c | 1689 | start = readcharfun; |
d11db2c8 | 1690 | } |
49cf7ff4 RS |
1691 | |
1692 | if (BUFFERP (readcharfun)) | |
1693 | b = XBUFFER (readcharfun); | |
1694 | else if (MARKERP (readcharfun)) | |
1695 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1696 | |
1ed7b9ae RS |
1697 | /* We assume START is nil when input is not from a buffer. */ |
1698 | if (! NILP (start) && !b) | |
1699 | abort (); | |
1700 | ||
0a37f512 | 1701 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1702 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1703 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1704 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1705 | |
b9598260 SM |
1706 | /* If lexical binding is active (either because it was specified in |
1707 | the file's header, or via a buffer-local variable), create an empty | |
1708 | lexical environment, otherwise, turn off lexical binding. */ | |
1709 | lex_bound = find_symbol_value (Qlexical_binding); | |
f07a954e SM |
1710 | specbind (Qinternal_interpreter_environment, |
1711 | NILP (lex_bound) || EQ (lex_bound, Qunbound) | |
1712 | ? Qnil : Fcons (Qt, Qnil)); | |
b9598260 | 1713 | |
0a37f512 | 1714 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1715 | |
48def666 | 1716 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
6bb6da3e | 1717 | if (NILP (Vpurify_flag) |
91fe9496 SM |
1718 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1719 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1720 | sourcename = call1 (Qfile_truename, sourcename) ; |
1721 | ||
ae321d28 RS |
1722 | LOADHIST_ATTACH (sourcename); |
1723 | ||
f38952fe GM |
1724 | continue_reading_p = 1; |
1725 | while (continue_reading_p) | |
078e7b4a | 1726 | { |
d311d28c | 1727 | ptrdiff_t count1 = SPECPDL_INDEX (); |
4c03c46d | 1728 | |
4b4deea2 | 1729 | if (b != 0 && NILP (BVAR (b, name))) |
49cf7ff4 RS |
1730 | error ("Reading from killed buffer"); |
1731 | ||
4c03c46d KS |
1732 | if (!NILP (start)) |
1733 | { | |
721b7d9e | 1734 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1735 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1736 | set_buffer_internal (b); |
1737 | ||
1738 | /* Save point in it. */ | |
4c03c46d | 1739 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1740 | /* Save ZV in it. */ |
4c03c46d | 1741 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1742 | /* Those get unbound after we read one expression. */ |
1743 | ||
1744 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1745 | Fgoto_char (start); |
d11db2c8 RS |
1746 | if (!NILP (end)) |
1747 | Fnarrow_to_region (make_number (BEGV), end); | |
1748 | ||
1749 | /* Just for cleanliness, convert END to a marker | |
1750 | if it is an integer. */ | |
1751 | if (INTEGERP (end)) | |
1752 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1753 | } |
1754 | ||
d11db2c8 RS |
1755 | /* On the first cycle, we can easily test here |
1756 | whether we are reading the whole buffer. */ | |
1757 | if (b && first_sexp) | |
1758 | whole_buffer = (PT == BEG && ZV == Z); | |
1759 | ||
078e7b4a | 1760 | instream = stream; |
4c03c46d | 1761 | read_next: |
078e7b4a JB |
1762 | c = READCHAR; |
1763 | if (c == ';') | |
1764 | { | |
1765 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1766 | goto read_next; |
1767 | } | |
1768 | if (c < 0) | |
1769 | { | |
1770 | unbind_to (count1, Qnil); | |
1771 | break; | |
078e7b4a | 1772 | } |
6069d957 RS |
1773 | |
1774 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 | 1775 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
ed497dd4 | 1776 | || c == 0xa0) /* NBSP */ |
4c03c46d | 1777 | goto read_next; |
078e7b4a | 1778 | |
265a9e55 | 1779 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1780 | { |
48def666 | 1781 | val = read_list (0, readcharfun); |
078e7b4a JB |
1782 | } |
1783 | else | |
1784 | { | |
1785 | UNREAD (c); | |
4ad679f9 | 1786 | read_objects = Qnil; |
f38952fe GM |
1787 | if (!NILP (readfun)) |
1788 | { | |
1789 | val = call1 (readfun, readcharfun); | |
1790 | ||
1791 | /* If READCHARFUN has set point to ZV, we should | |
1792 | stop reading, even if the form read sets point | |
1793 | to a different value when evaluated. */ | |
1794 | if (BUFFERP (readcharfun)) | |
1795 | { | |
0902fe45 PE |
1796 | struct buffer *buf = XBUFFER (readcharfun); |
1797 | if (BUF_PT (buf) == BUF_ZV (buf)) | |
f38952fe GM |
1798 | continue_reading_p = 0; |
1799 | } | |
1800 | } | |
976350af | 1801 | else if (! NILP (Vload_read_function)) |
84a15045 | 1802 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1803 | else |
abb13b09 | 1804 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1805 | } |
1806 | ||
4c03c46d KS |
1807 | if (!NILP (start) && continue_reading_p) |
1808 | start = Fpoint_marker (); | |
d11db2c8 RS |
1809 | |
1810 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1811 | unbind_to (count1, Qnil); |
1812 | ||
d11db2c8 | 1813 | /* Now eval what we just read. */ |
defb1411 | 1814 | val = eval_sub (val); |
f38952fe | 1815 | |
078e7b4a JB |
1816 | if (printflag) |
1817 | { | |
1818 | Vvalues = Fcons (val, Vvalues); | |
1819 | if (EQ (Vstandard_output, Qt)) | |
1820 | Fprin1 (val, Qnil); | |
1821 | else | |
1822 | Fprint (val, Qnil); | |
1823 | } | |
d11db2c8 RS |
1824 | |
1825 | first_sexp = 0; | |
078e7b4a JB |
1826 | } |
1827 | ||
8878319c | 1828 | build_load_history (sourcename, |
d11db2c8 | 1829 | stream || whole_buffer); |
b502a9a1 | 1830 | |
ae321d28 RS |
1831 | UNGCPRO; |
1832 | ||
078e7b4a JB |
1833 | unbind_to (count, Qnil); |
1834 | } | |
1835 | ||
1076254d | 1836 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1837 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1838 | When called from a Lisp program (i.e., not interactively), this |
1839 | function accepts up to five optional arguments: | |
5de38842 PJ |
1840 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1841 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1842 | A value of nil means discard it; anything else is stream for print. |
1843 | FILENAME specifies the file name to use for `load-history'. | |
1844 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1845 | invocation. | |
1846 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1847 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1848 | |
1849 | This function preserves the position of point. */) | |
5842a27b | 1850 | (Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print) |
228d4b1c | 1851 | { |
d311d28c | 1852 | ptrdiff_t count = SPECPDL_INDEX (); |
228d4b1c JA |
1853 | Lisp_Object tem, buf; |
1854 | ||
9391b698 | 1855 | if (NILP (buffer)) |
228d4b1c JA |
1856 | buf = Fcurrent_buffer (); |
1857 | else | |
9391b698 | 1858 | buf = Fget_buffer (buffer); |
dfdb645c | 1859 | if (NILP (buf)) |
13febd85 | 1860 | error ("No such buffer"); |
228d4b1c | 1861 | |
1076254d | 1862 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1863 | tem = Qsymbolp; |
1864 | else | |
1865 | tem = printflag; | |
13febd85 RS |
1866 | |
1867 | if (NILP (filename)) | |
4b4deea2 | 1868 | filename = BVAR (XBUFFER (buf), filename); |
13febd85 | 1869 | |
3f39f996 | 1870 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1871 | specbind (Qstandard_output, tem); |
1872 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1873 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
7200d79c | 1874 | specbind (Qlexical_binding, lisp_file_lexically_bound_p (buf) ? Qt : Qnil); |
defb1411 | 1875 | readevalloop (buf, 0, filename, |
4c03c46d | 1876 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); |
cb09ab7a | 1877 | unbind_to (count, Qnil); |
228d4b1c JA |
1878 | |
1879 | return Qnil; | |
1880 | } | |
1881 | ||
976350af | 1882 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1883 | doc: /* Execute the region as Lisp code. |
1884 | When called from programs, expects two arguments, | |
1885 | giving starting and ending indices in the current buffer | |
1886 | of the text to be executed. | |
1887 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1888 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1889 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1890 | instead of `read' to read each expression. It gets one argument | |
1891 | which is the input stream for reading characters. | |
1892 | ||
1893 | This function does not move point. */) | |
5842a27b | 1894 | (Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function) |
078e7b4a | 1895 | { |
e4769531 | 1896 | /* FIXME: Do the eval-sexp-add-defvars dance! */ |
d311d28c | 1897 | ptrdiff_t count = SPECPDL_INDEX (); |
ae321d28 RS |
1898 | Lisp_Object tem, cbuf; |
1899 | ||
1900 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1901 | |
265a9e55 | 1902 | if (NILP (printflag)) |
078e7b4a JB |
1903 | tem = Qsymbolp; |
1904 | else | |
1905 | tem = printflag; | |
1906 | specbind (Qstandard_output, tem); | |
3f39f996 | 1907 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1908 | |
48def666 | 1909 | /* `readevalloop' calls functions which check the type of start and end. */ |
f619ad4c | 1910 | readevalloop (cbuf, 0, BVAR (XBUFFER (cbuf), filename), |
4c03c46d KS |
1911 | !NILP (printflag), Qnil, read_function, |
1912 | start, end); | |
078e7b4a JB |
1913 | |
1914 | return unbind_to (count, Qnil); | |
1915 | } | |
1916 | ||
078e7b4a | 1917 | \f |
a7ca3326 | 1918 | DEFUN ("read", Fread, Sread, 0, 1, 0, |
5de38842 PJ |
1919 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1920 | If STREAM is nil, use the value of `standard-input' (which see). | |
1921 | STREAM or the value of `standard-input' may be: | |
1922 | a buffer (read from point and advance it) | |
1923 | a marker (read from where it points and advance it) | |
1924 | a function (call it with no arguments for each character, | |
1925 | call it with a char as argument to push a char back) | |
1926 | a string (takes text from string, starting at the beginning) | |
1927 | t (read text line using minibuffer and use it, or read from | |
1928 | standard input in batch mode). */) | |
5842a27b | 1929 | (Lisp_Object stream) |
078e7b4a | 1930 | { |
5be02dff KH |
1931 | if (NILP (stream)) |
1932 | stream = Vstandard_input; | |
1933 | if (EQ (stream, Qt)) | |
1934 | stream = Qread_char; | |
5be02dff | 1935 | if (EQ (stream, Qread_char)) |
078e7b4a | 1936 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1937 | |
abb13b09 | 1938 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1939 | } |
1940 | ||
a7ca3326 | 1941 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, |
5de38842 PJ |
1942 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1943 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
a4824228 | 1944 | FINAL-STRING-INDEX is an integer giving the position of the next |
a239d4e9 | 1945 | remaining character in STRING. |
5de38842 PJ |
1946 | START and END optionally delimit a substring of STRING from which to read; |
1947 | they default to 0 and (length STRING) respectively. */) | |
5842a27b | 1948 | (Lisp_Object string, Lisp_Object start, Lisp_Object end) |
078e7b4a | 1949 | { |
2530ceaf | 1950 | Lisp_Object ret; |
b7826503 | 1951 | CHECK_STRING (string); |
48def666 | 1952 | /* `read_internal_start' sets `read_from_string_index'. */ |
2530ceaf | 1953 | ret = read_internal_start (string, start, end); |
5135ab39 | 1954 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1955 | } |
078e7b4a | 1956 | |
abb13b09 | 1957 | /* Function to set up the global context we need in toplevel read |
48def666 | 1958 | calls. */ |
abb13b09 | 1959 | static Lisp_Object |
971de7fb | 1960 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
48def666 | 1961 | /* `start', `end' only used when stream is a string. */ |
abb13b09 CW |
1962 | { |
1963 | Lisp_Object retval; | |
078e7b4a | 1964 | |
abb13b09 | 1965 | readchar_count = 0; |
17634846 | 1966 | new_backquote_flag = 0; |
4ad679f9 | 1967 | read_objects = Qnil; |
abb13b09 CW |
1968 | if (EQ (Vread_with_symbol_positions, Qt) |
1969 | || EQ (Vread_with_symbol_positions, stream)) | |
1970 | Vread_symbol_positions_list = Qnil; | |
1971 | ||
8f924df7 KH |
1972 | if (STRINGP (stream) |
1973 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 | 1974 | { |
d311d28c | 1975 | ptrdiff_t startval, endval; |
8f924df7 | 1976 | Lisp_Object string; |
078e7b4a | 1977 | |
8f924df7 KH |
1978 | if (STRINGP (stream)) |
1979 | string = stream; | |
1980 | else | |
1981 | string = XCAR (stream); | |
078e7b4a | 1982 | |
abb13b09 | 1983 | if (NILP (end)) |
8f924df7 | 1984 | endval = SCHARS (string); |
abb13b09 CW |
1985 | else |
1986 | { | |
1987 | CHECK_NUMBER (end); | |
d311d28c | 1988 | if (! (0 <= XINT (end) && XINT (end) <= SCHARS (string))) |
8f924df7 | 1989 | args_out_of_range (string, end); |
d311d28c | 1990 | endval = XINT (end); |
abb13b09 | 1991 | } |
17634846 | 1992 | |
abb13b09 CW |
1993 | if (NILP (start)) |
1994 | startval = 0; | |
1995 | else | |
1996 | { | |
1997 | CHECK_NUMBER (start); | |
d311d28c | 1998 | if (! (0 <= XINT (start) && XINT (start) <= endval)) |
8f924df7 | 1999 | args_out_of_range (string, start); |
d311d28c | 2000 | startval = XINT (start); |
abb13b09 CW |
2001 | } |
2002 | read_from_string_index = startval; | |
8f924df7 | 2003 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
2004 | read_from_string_limit = endval; |
2005 | } | |
177c0ea7 | 2006 | |
abb13b09 CW |
2007 | retval = read0 (stream); |
2008 | if (EQ (Vread_with_symbol_positions, Qt) | |
2009 | || EQ (Vread_with_symbol_positions, stream)) | |
2010 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
2011 | return retval; | |
078e7b4a JB |
2012 | } |
2013 | \f | |
336d4a9c KS |
2014 | |
2015 | /* Signal Qinvalid_read_syntax error. | |
2016 | S is error string of length N (if > 0) */ | |
2017 | ||
845ca893 | 2018 | static _Noreturn void |
e4d29b33 | 2019 | invalid_syntax (const char *s) |
336d4a9c | 2020 | { |
e4d29b33 | 2021 | xsignal1 (Qinvalid_read_syntax, build_string (s)); |
336d4a9c KS |
2022 | } |
2023 | ||
2024 | ||
6428369f | 2025 | /* Use this for recursive reads, in contexts where internal tokens |
48def666 | 2026 | are not allowed. */ |
e28552a4 | 2027 | |
078e7b4a | 2028 | static Lisp_Object |
971de7fb | 2029 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
2030 | { |
2031 | register Lisp_Object val; | |
e28552a4 | 2032 | int c; |
078e7b4a | 2033 | |
17634846 | 2034 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2035 | if (!c) |
2036 | return val; | |
078e7b4a | 2037 | |
336d4a9c KS |
2038 | xsignal1 (Qinvalid_read_syntax, |
2039 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2040 | } |
2041 | \f | |
82cb60d3 | 2042 | static ptrdiff_t read_buffer_size; |
078e7b4a JB |
2043 | static char *read_buffer; |
2044 | ||
f6f79b37 | 2045 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2046 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2047 | |
078e7b4a | 2048 | static int |
971de7fb | 2049 | read_escape (Lisp_Object readcharfun, int stringp) |
078e7b4a JB |
2050 | { |
2051 | register int c = READCHAR; | |
9735b9ce | 2052 | /* \u allows up to four hex digits, \U up to eight. Default to the |
48def666 | 2053 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 2054 | int unicode_hex_count = 4; |
f6f79b37 | 2055 | |
078e7b4a JB |
2056 | switch (c) |
2057 | { | |
f3849f25 | 2058 | case -1: |
da3b886d | 2059 | end_of_file_error (); |
f3849f25 | 2060 | |
078e7b4a | 2061 | case 'a': |
265a9e55 | 2062 | return '\007'; |
078e7b4a JB |
2063 | case 'b': |
2064 | return '\b'; | |
f405a585 RS |
2065 | case 'd': |
2066 | return 0177; | |
078e7b4a JB |
2067 | case 'e': |
2068 | return 033; | |
2069 | case 'f': | |
2070 | return '\f'; | |
2071 | case 'n': | |
2072 | return '\n'; | |
2073 | case 'r': | |
2074 | return '\r'; | |
2075 | case 't': | |
2076 | return '\t'; | |
2077 | case 'v': | |
2078 | return '\v'; | |
2079 | case '\n': | |
2080 | return -1; | |
e28552a4 | 2081 | case ' ': |
e7fc914b KH |
2082 | if (stringp) |
2083 | return -1; | |
2084 | return ' '; | |
078e7b4a JB |
2085 | |
2086 | case 'M': | |
2087 | c = READCHAR; | |
2088 | if (c != '-') | |
2089 | error ("Invalid escape character syntax"); | |
2090 | c = READCHAR; | |
2091 | if (c == '\\') | |
8792be66 | 2092 | c = read_escape (readcharfun, 0); |
7bd279cd | 2093 | return c | meta_modifier; |
f405a585 RS |
2094 | |
2095 | case 'S': | |
2096 | c = READCHAR; | |
2097 | if (c != '-') | |
2098 | error ("Invalid escape character syntax"); | |
2099 | c = READCHAR; | |
2100 | if (c == '\\') | |
8792be66 | 2101 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2102 | return c | shift_modifier; |
2103 | ||
2104 | case 'H': | |
2105 | c = READCHAR; | |
2106 | if (c != '-') | |
2107 | error ("Invalid escape character syntax"); | |
2108 | c = READCHAR; | |
2109 | if (c == '\\') | |
8792be66 | 2110 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2111 | return c | hyper_modifier; |
2112 | ||
2113 | case 'A': | |
2114 | c = READCHAR; | |
2115 | if (c != '-') | |
2116 | error ("Invalid escape character syntax"); | |
2117 | c = READCHAR; | |
2118 | if (c == '\\') | |
8792be66 | 2119 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2120 | return c | alt_modifier; |
2121 | ||
2122 | case 's': | |
2123 | c = READCHAR; | |
4d7528d0 | 2124 | if (stringp || c != '-') |
010b7eac RS |
2125 | { |
2126 | UNREAD (c); | |
2127 | return ' '; | |
2128 | } | |
7bd279cd RS |
2129 | c = READCHAR; |
2130 | if (c == '\\') | |
8792be66 | 2131 | c = read_escape (readcharfun, 0); |
7bd279cd | 2132 | return c | super_modifier; |
078e7b4a JB |
2133 | |
2134 | case 'C': | |
2135 | c = READCHAR; | |
2136 | if (c != '-') | |
2137 | error ("Invalid escape character syntax"); | |
2138 | case '^': | |
2139 | c = READCHAR; | |
2140 | if (c == '\\') | |
8792be66 | 2141 | c = read_escape (readcharfun, 0); |
164d590d KH |
2142 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2143 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2144 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2145 | return c | ctrl_modifier; | |
f405a585 RS |
2146 | /* ASCII control chars are made from letters (both cases), |
2147 | as well as the non-letters within 0100...0137. */ | |
2148 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2149 | return (c & (037 | ~0177)); | |
2150 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2151 | return (c & (037 | ~0177)); | |
078e7b4a | 2152 | else |
7bd279cd | 2153 | return c | ctrl_modifier; |
078e7b4a JB |
2154 | |
2155 | case '0': | |
2156 | case '1': | |
2157 | case '2': | |
2158 | case '3': | |
2159 | case '4': | |
2160 | case '5': | |
2161 | case '6': | |
2162 | case '7': | |
2163 | /* An octal escape, as in ANSI C. */ | |
2164 | { | |
2165 | register int i = c - '0'; | |
2166 | register int count = 0; | |
2167 | while (++count < 3) | |
2168 | { | |
2169 | if ((c = READCHAR) >= '0' && c <= '7') | |
2170 | { | |
2171 | i *= 8; | |
2172 | i += c - '0'; | |
2173 | } | |
2174 | else | |
2175 | { | |
2176 | UNREAD (c); | |
2177 | break; | |
2178 | } | |
2179 | } | |
177c0ea7 | 2180 | |
8f924df7 | 2181 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2182 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2183 | return i; |
2184 | } | |
2185 | ||
2186 | case 'x': | |
2187 | /* A hex escape, as in ANSI C. */ | |
2188 | { | |
0324f3af | 2189 | unsigned int i = 0; |
1571601b | 2190 | int count = 0; |
078e7b4a JB |
2191 | while (1) |
2192 | { | |
2193 | c = READCHAR; | |
2194 | if (c >= '0' && c <= '9') | |
2195 | { | |
2196 | i *= 16; | |
2197 | i += c - '0'; | |
2198 | } | |
2199 | else if ((c >= 'a' && c <= 'f') | |
2200 | || (c >= 'A' && c <= 'F')) | |
2201 | { | |
2202 | i *= 16; | |
2203 | if (c >= 'a' && c <= 'f') | |
2204 | i += c - 'a' + 10; | |
2205 | else | |
2206 | i += c - 'A' + 10; | |
2207 | } | |
2208 | else | |
2209 | { | |
2210 | UNREAD (c); | |
2211 | break; | |
2212 | } | |
0324f3af PE |
2213 | /* Allow hex escapes as large as ?\xfffffff, because some |
2214 | packages use them to denote characters with modifiers. */ | |
2215 | if ((CHAR_META | (CHAR_META - 1)) < i) | |
39019e54 | 2216 | error ("Hex character out of range: \\x%x...", i); |
82cb60d3 | 2217 | count += count < 3; |
078e7b4a | 2218 | } |
f6f79b37 | 2219 | |
1571601b | 2220 | if (count < 3 && i >= 0x80) |
8792be66 | 2221 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2222 | return i; |
2223 | } | |
2224 | ||
71b169b8 EZ |
2225 | case 'U': |
2226 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2227 | unicode_hex_count = 8; | |
2228 | case 'u': | |
2229 | ||
9735b9ce | 2230 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2231 | not arbitrarily in the source code, as in some other languages. */ |
2232 | { | |
a808f22d | 2233 | unsigned int i = 0; |
71b169b8 | 2234 | int count = 0; |
71b169b8 EZ |
2235 | |
2236 | while (++count <= unicode_hex_count) | |
2237 | { | |
2238 | c = READCHAR; | |
48def666 SM |
2239 | /* `isdigit' and `isalpha' may be locale-specific, which we don't |
2240 | want. */ | |
71b169b8 EZ |
2241 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); |
2242 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2243 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2244 | else | |
39019e54 | 2245 | error ("Non-hex digit used for Unicode escape"); |
71b169b8 | 2246 | } |
a808f22d KH |
2247 | if (i > 0x10FFFF) |
2248 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2249 | return i; |
71b169b8 EZ |
2250 | } |
2251 | ||
078e7b4a JB |
2252 | default: |
2253 | return c; | |
2254 | } | |
2255 | } | |
2256 | ||
a108c10b PE |
2257 | /* Return the digit that CHARACTER stands for in the given BASE. |
2258 | Return -1 if CHARACTER is out of range for BASE, | |
2259 | and -2 if CHARACTER is not valid for any supported BASE. */ | |
2260 | static inline int | |
2261 | digit_to_number (int character, int base) | |
2262 | { | |
2263 | int digit; | |
2264 | ||
2265 | if ('0' <= character && character <= '9') | |
2266 | digit = character - '0'; | |
2267 | else if ('a' <= character && character <= 'z') | |
2268 | digit = character - 'a' + 10; | |
2269 | else if ('A' <= character && character <= 'Z') | |
2270 | digit = character - 'A' + 10; | |
2271 | else | |
2272 | return -2; | |
2273 | ||
2274 | return digit < base ? digit : -1; | |
2275 | } | |
2276 | ||
bf5d1a17 GM |
2277 | /* Read an integer in radix RADIX using READCHARFUN to read |
2278 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2279 | read error is signaled . Value is the integer read. Signals an | |
2280 | error if encountering invalid read syntax or if RADIX is out of | |
2281 | range. */ | |
2282 | ||
2283 | static Lisp_Object | |
8b9ac8b4 | 2284 | read_integer (Lisp_Object readcharfun, EMACS_INT radix) |
bf5d1a17 | 2285 | { |
8b9ac8b4 PE |
2286 | /* Room for sign, leading 0, other digits, trailing null byte. |
2287 | Also, room for invalid syntax diagnostic. */ | |
2288 | char buf[max (1 + 1 + sizeof (uintmax_t) * CHAR_BIT + 1, | |
2289 | sizeof "integer, radix " + INT_STRLEN_BOUND (EMACS_INT))]; | |
a108c10b PE |
2290 | |
2291 | int valid = -1; /* 1 if valid, 0 if not, -1 if incomplete. */ | |
bf5d1a17 GM |
2292 | |
2293 | if (radix < 2 || radix > 36) | |
a108c10b | 2294 | valid = 0; |
bf5d1a17 GM |
2295 | else |
2296 | { | |
a108c10b PE |
2297 | char *p = buf; |
2298 | int c, digit; | |
bf5d1a17 GM |
2299 | |
2300 | c = READCHAR; | |
a108c10b | 2301 | if (c == '-' || c == '+') |
bf5d1a17 | 2302 | { |
a108c10b | 2303 | *p++ = c; |
bf5d1a17 | 2304 | c = READCHAR; |
bf5d1a17 | 2305 | } |
177c0ea7 | 2306 | |
a108c10b | 2307 | if (c == '0') |
bf5d1a17 | 2308 | { |
a108c10b PE |
2309 | *p++ = c; |
2310 | valid = 1; | |
bf5d1a17 | 2311 | |
a108c10b PE |
2312 | /* Ignore redundant leading zeros, so the buffer doesn't |
2313 | fill up with them. */ | |
2314 | do | |
2315 | c = READCHAR; | |
2316 | while (c == '0'); | |
2317 | } | |
2318 | ||
2319 | while (-1 <= (digit = digit_to_number (c, radix))) | |
2320 | { | |
2321 | if (digit == -1) | |
2322 | valid = 0; | |
2323 | if (valid < 0) | |
2324 | valid = 1; | |
2325 | ||
2326 | if (p < buf + sizeof buf - 1) | |
2327 | *p++ = c; | |
2328 | else | |
2329 | valid = 0; | |
bf5d1a17 | 2330 | |
bf5d1a17 GM |
2331 | c = READCHAR; |
2332 | } | |
a108c10b | 2333 | |
0a6a104b | 2334 | UNREAD (c); |
a108c10b | 2335 | *p = '\0'; |
bf5d1a17 GM |
2336 | } |
2337 | ||
a108c10b | 2338 | if (! valid) |
bf5d1a17 | 2339 | { |
8b9ac8b4 | 2340 | sprintf (buf, "integer, radix %"pI"d", radix); |
e4d29b33 | 2341 | invalid_syntax (buf); |
bf5d1a17 GM |
2342 | } |
2343 | ||
a108c10b | 2344 | return string_to_number (buf, radix, 0); |
bf5d1a17 GM |
2345 | } |
2346 | ||
2347 | ||
6428369f KH |
2348 | /* If the next token is ')' or ']' or '.', we store that character |
2349 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2350 | zero in *PCH and we read and return one lisp object. |
2351 | ||
2352 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2353 | ||
078e7b4a | 2354 | static Lisp_Object |
971de7fb | 2355 | read1 (register Lisp_Object readcharfun, int *pch, int first_in_list) |
078e7b4a JB |
2356 | { |
2357 | register int c; | |
3c346cc3 | 2358 | unsigned uninterned_symbol = 0; |
1202434b | 2359 | int multibyte; |
4ad679f9 | 2360 | |
6428369f | 2361 | *pch = 0; |
8792be66 | 2362 | load_each_byte = 0; |
078e7b4a JB |
2363 | |
2364 | retry: | |
2365 | ||
1202434b | 2366 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2367 | if (c < 0) |
2368 | end_of_file_error (); | |
078e7b4a JB |
2369 | |
2370 | switch (c) | |
2371 | { | |
2372 | case '(': | |
2373 | return read_list (0, readcharfun); | |
2374 | ||
2375 | case '[': | |
c15cfd1f | 2376 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2377 | |
2378 | case ')': | |
2379 | case ']': | |
078e7b4a | 2380 | { |
6428369f KH |
2381 | *pch = c; |
2382 | return Qnil; | |
078e7b4a JB |
2383 | } |
2384 | ||
2385 | case '#': | |
200f684e | 2386 | c = READCHAR; |
f19a0f5b TZ |
2387 | if (c == 's') |
2388 | { | |
2389 | c = READCHAR; | |
2390 | if (c == '(') | |
2391 | { | |
2392 | /* Accept extended format for hashtables (extensible to | |
2393 | other types), e.g. | |
48def666 | 2394 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ |
f19a0f5b TZ |
2395 | Lisp_Object tmp = read_list (0, readcharfun); |
2396 | Lisp_Object head = CAR_SAFE (tmp); | |
2397 | Lisp_Object data = Qnil; | |
2398 | Lisp_Object val = Qnil; | |
2399 | /* The size is 2 * number of allowed keywords to | |
48def666 | 2400 | make-hash-table. */ |
9735b9ce | 2401 | Lisp_Object params[10]; |
f19a0f5b TZ |
2402 | Lisp_Object ht; |
2403 | Lisp_Object key = Qnil; | |
2404 | int param_count = 0; | |
9735b9ce | 2405 | |
f19a0f5b TZ |
2406 | if (!EQ (head, Qhash_table)) |
2407 | error ("Invalid extended read marker at head of #s list " | |
2408 | "(only hash-table allowed)"); | |
9735b9ce | 2409 | |
f19a0f5b TZ |
2410 | tmp = CDR_SAFE (tmp); |
2411 | ||
48def666 | 2412 | /* This is repetitive but fast and simple. */ |
f19a0f5b | 2413 | params[param_count] = QCsize; |
48def666 | 2414 | params[param_count + 1] = Fplist_get (tmp, Qsize); |
5721b4ed AS |
2415 | if (!NILP (params[param_count + 1])) |
2416 | param_count += 2; | |
f19a0f5b TZ |
2417 | |
2418 | params[param_count] = QCtest; | |
48def666 | 2419 | params[param_count + 1] = Fplist_get (tmp, Qtest); |
5721b4ed AS |
2420 | if (!NILP (params[param_count + 1])) |
2421 | param_count += 2; | |
f19a0f5b TZ |
2422 | |
2423 | params[param_count] = QCweakness; | |
48def666 | 2424 | params[param_count + 1] = Fplist_get (tmp, Qweakness); |
5721b4ed AS |
2425 | if (!NILP (params[param_count + 1])) |
2426 | param_count += 2; | |
f19a0f5b TZ |
2427 | |
2428 | params[param_count] = QCrehash_size; | |
48def666 | 2429 | params[param_count + 1] = Fplist_get (tmp, Qrehash_size); |
5721b4ed AS |
2430 | if (!NILP (params[param_count + 1])) |
2431 | param_count += 2; | |
f19a0f5b TZ |
2432 | |
2433 | params[param_count] = QCrehash_threshold; | |
48def666 | 2434 | params[param_count + 1] = Fplist_get (tmp, Qrehash_threshold); |
5721b4ed AS |
2435 | if (!NILP (params[param_count + 1])) |
2436 | param_count += 2; | |
f19a0f5b | 2437 | |
48def666 | 2438 | /* This is the hashtable data. */ |
f19a0f5b TZ |
2439 | data = Fplist_get (tmp, Qdata); |
2440 | ||
48def666 | 2441 | /* Now use params to make a new hashtable and fill it. */ |
f19a0f5b | 2442 | ht = Fmake_hash_table (param_count, params); |
9735b9ce | 2443 | |
f19a0f5b TZ |
2444 | while (CONSP (data)) |
2445 | { | |
2446 | key = XCAR (data); | |
2447 | data = XCDR (data); | |
2448 | if (!CONSP (data)) | |
2449 | error ("Odd number of elements in hashtable data"); | |
2450 | val = XCAR (data); | |
2451 | data = XCDR (data); | |
2452 | Fputhash (key, val, ht); | |
2453 | } | |
9735b9ce | 2454 | |
f19a0f5b TZ |
2455 | return ht; |
2456 | } | |
5721b4ed | 2457 | UNREAD (c); |
e4d29b33 | 2458 | invalid_syntax ("#"); |
f19a0f5b | 2459 | } |
c2390933 RS |
2460 | if (c == '^') |
2461 | { | |
2462 | c = READCHAR; | |
2463 | if (c == '[') | |
2464 | { | |
2465 | Lisp_Object tmp; | |
c15cfd1f | 2466 | tmp = read_vector (readcharfun, 0); |
77b37c05 | 2467 | if (ASIZE (tmp) < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2468 | error ("Invalid size char-table"); |
985773c9 | 2469 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2470 | return tmp; |
2471 | } | |
3701b5de KH |
2472 | else if (c == '^') |
2473 | { | |
2474 | c = READCHAR; | |
2475 | if (c == '[') | |
2476 | { | |
2477 | Lisp_Object tmp; | |
d311d28c PE |
2478 | int depth; |
2479 | ptrdiff_t size; | |
8f924df7 | 2480 | |
c15cfd1f | 2481 | tmp = read_vector (readcharfun, 0); |
6efdadfd PE |
2482 | size = ASIZE (tmp); |
2483 | if (size == 0) | |
2484 | error ("Invalid size char-table"); | |
d311d28c | 2485 | if (! RANGED_INTEGERP (1, AREF (tmp, 0), 3)) |
1571601b KH |
2486 | error ("Invalid depth in char-table"); |
2487 | depth = XINT (AREF (tmp, 0)); | |
6efdadfd | 2488 | if (chartab_size[depth] != size - 2) |
3701b5de | 2489 | error ("Invalid size char-table"); |
985773c9 | 2490 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2491 | return tmp; |
2492 | } | |
e4d29b33 | 2493 | invalid_syntax ("#^^"); |
3701b5de | 2494 | } |
e4d29b33 | 2495 | invalid_syntax ("#^"); |
c2390933 RS |
2496 | } |
2497 | if (c == '&') | |
2498 | { | |
2499 | Lisp_Object length; | |
2500 | length = read1 (readcharfun, pch, first_in_list); | |
2501 | c = READCHAR; | |
2502 | if (c == '"') | |
2503 | { | |
2504 | Lisp_Object tmp, val; | |
82cb60d3 | 2505 | EMACS_INT size_in_chars |
d1ca81d9 AS |
2506 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) |
2507 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2508 | |
2509 | UNREAD (c); | |
2510 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2511 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2512 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2513 | /* We used to print 1 char too many |
2514 | when the number of bits was a multiple of 8. | |
2515 | Accept such input in case it came from an old | |
2516 | version. */ | |
2517 | && ! (XFASTINT (length) | |
327719ee | 2518 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
e4d29b33 | 2519 | invalid_syntax ("#&..."); |
177c0ea7 | 2520 | |
c2390933 | 2521 | val = Fmake_bool_vector (length, Qnil); |
72af86bd | 2522 | memcpy (XBOOL_VECTOR (val)->data, SDATA (tmp), size_in_chars); |
67d3b149 | 2523 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2524 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2525 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2526 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2527 | return val; |
2528 | } | |
e4d29b33 | 2529 | invalid_syntax ("#&..."); |
c2390933 | 2530 | } |
200f684e | 2531 | if (c == '[') |
876c194c SM |
2532 | { |
2533 | /* Accept compiled functions at read-time so that we don't have to | |
2534 | build them using function calls. */ | |
2535 | Lisp_Object tmp; | |
2536 | tmp = read_vector (readcharfun, 1); | |
3017f87f SM |
2537 | make_byte_code (XVECTOR (tmp)); |
2538 | return tmp; | |
876c194c | 2539 | } |
748ef62f RS |
2540 | if (c == '(') |
2541 | { | |
2542 | Lisp_Object tmp; | |
2543 | struct gcpro gcpro1; | |
e28552a4 | 2544 | int ch; |
748ef62f RS |
2545 | |
2546 | /* Read the string itself. */ | |
17634846 | 2547 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2548 | if (ch != 0 || !STRINGP (tmp)) |
e4d29b33 | 2549 | invalid_syntax ("#"); |
748ef62f RS |
2550 | GCPRO1 (tmp); |
2551 | /* Read the intervals and their properties. */ | |
2552 | while (1) | |
2553 | { | |
2554 | Lisp_Object beg, end, plist; | |
2555 | ||
17634846 | 2556 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2557 | end = plist = Qnil; |
6428369f KH |
2558 | if (ch == ')') |
2559 | break; | |
2560 | if (ch == 0) | |
17634846 | 2561 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2562 | if (ch == 0) |
17634846 | 2563 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2564 | if (ch) |
e4d29b33 | 2565 | invalid_syntax ("Invalid string property list"); |
748ef62f RS |
2566 | Fset_text_properties (beg, end, plist, tmp); |
2567 | } | |
2568 | UNGCPRO; | |
2569 | return tmp; | |
2570 | } | |
177c0ea7 | 2571 | |
20ea2964 RS |
2572 | /* #@NUMBER is used to skip NUMBER following characters. |
2573 | That's used in .elc files to skip over doc strings | |
2574 | and function definitions. */ | |
2575 | if (c == '@') | |
2576 | { | |
bfbbd7e7 PE |
2577 | enum { extra = 100 }; |
2578 | ptrdiff_t i, nskip = 0; | |
20ea2964 | 2579 | |
8792be66 | 2580 | load_each_byte = 1; |
20ea2964 RS |
2581 | /* Read a decimal integer. */ |
2582 | while ((c = READCHAR) >= 0 | |
2583 | && c >= '0' && c <= '9') | |
2584 | { | |
bfbbd7e7 PE |
2585 | if ((STRING_BYTES_BOUND - extra) / 10 <= nskip) |
2586 | string_overflow (); | |
20ea2964 RS |
2587 | nskip *= 10; |
2588 | nskip += c - '0'; | |
2589 | } | |
0a6a104b | 2590 | UNREAD (c); |
177c0ea7 | 2591 | |
8792be66 KH |
2592 | if (load_force_doc_strings |
2593 | && (EQ (readcharfun, Qget_file_char) | |
2594 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2595 | { |
2596 | /* If we are supposed to force doc strings into core right now, | |
2597 | record the last string that we skipped, | |
2598 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2599 | |
2600 | /* But first exchange saved_doc_string | |
2601 | with prev_saved_doc_string, so we save two strings. */ | |
2602 | { | |
2603 | char *temp = saved_doc_string; | |
bfbbd7e7 | 2604 | ptrdiff_t temp_size = saved_doc_string_size; |
68c45bf0 | 2605 | file_offset temp_pos = saved_doc_string_position; |
bfbbd7e7 | 2606 | ptrdiff_t temp_len = saved_doc_string_length; |
c15cfd1f RS |
2607 | |
2608 | saved_doc_string = prev_saved_doc_string; | |
2609 | saved_doc_string_size = prev_saved_doc_string_size; | |
2610 | saved_doc_string_position = prev_saved_doc_string_position; | |
2611 | saved_doc_string_length = prev_saved_doc_string_length; | |
2612 | ||
2613 | prev_saved_doc_string = temp; | |
2614 | prev_saved_doc_string_size = temp_size; | |
2615 | prev_saved_doc_string_position = temp_pos; | |
2616 | prev_saved_doc_string_length = temp_len; | |
2617 | } | |
2618 | ||
b2a30870 RS |
2619 | if (saved_doc_string_size == 0) |
2620 | { | |
23f86fce | 2621 | saved_doc_string = xmalloc (nskip + extra); |
bfbbd7e7 | 2622 | saved_doc_string_size = nskip + extra; |
b2a30870 RS |
2623 | } |
2624 | if (nskip > saved_doc_string_size) | |
2625 | { | |
38182d90 | 2626 | saved_doc_string = xrealloc (saved_doc_string, nskip + extra); |
37d0112b | 2627 | saved_doc_string_size = nskip + extra; |
b2a30870 RS |
2628 | } |
2629 | ||
68c45bf0 | 2630 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2631 | |
2632 | /* Copy that many characters into saved_doc_string. */ | |
2633 | for (i = 0; i < nskip && c >= 0; i++) | |
2634 | saved_doc_string[i] = c = READCHAR; | |
2635 | ||
2636 | saved_doc_string_length = i; | |
2637 | } | |
2638 | else | |
b2a30870 RS |
2639 | { |
2640 | /* Skip that many characters. */ | |
2641 | for (i = 0; i < nskip && c >= 0; i++) | |
2642 | c = READCHAR; | |
2643 | } | |
d49f0c1a | 2644 | |
8792be66 | 2645 | load_each_byte = 0; |
20ea2964 RS |
2646 | goto retry; |
2647 | } | |
e2518d02 RS |
2648 | if (c == '!') |
2649 | { | |
2650 | /* #! appears at the beginning of an executable file. | |
2651 | Skip the first line. */ | |
225c7a07 | 2652 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2653 | c = READCHAR; |
2654 | goto retry; | |
2655 | } | |
20ea2964 RS |
2656 | if (c == '$') |
2657 | return Vload_file_name; | |
2b6cae0c RS |
2658 | if (c == '\'') |
2659 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2660 | /* #:foo is the uninterned symbol named foo. */ |
2661 | if (c == ':') | |
2662 | { | |
2663 | uninterned_symbol = 1; | |
2664 | c = READCHAR; | |
52968808 | 2665 | if (!(c > 040 |
ed497dd4 | 2666 | && c != 0xa0 /* NBSP */ |
52968808 | 2667 | && (c >= 0200 |
0a6a104b | 2668 | || strchr ("\"';()[]#`,", c) == NULL))) |
52968808 AS |
2669 | { |
2670 | /* No symbol character follows, this is the empty | |
2671 | symbol. */ | |
0a6a104b | 2672 | UNREAD (c); |
4a7edc24 | 2673 | return Fmake_symbol (empty_unibyte_string); |
52968808 AS |
2674 | } |
2675 | goto read_symbol; | |
4ad679f9 | 2676 | } |
9a79b20c AS |
2677 | /* ## is the empty symbol. */ |
2678 | if (c == '#') | |
4a7edc24 | 2679 | return Fintern (empty_unibyte_string, Qnil); |
4ad679f9 EN |
2680 | /* Reader forms that can reuse previously read objects. */ |
2681 | if (c >= '0' && c <= '9') | |
2682 | { | |
8b9ac8b4 | 2683 | EMACS_INT n = 0; |
4ad679f9 | 2684 | Lisp_Object tem; |
2b6cae0c | 2685 | |
4ad679f9 EN |
2686 | /* Read a non-negative integer. */ |
2687 | while (c >= '0' && c <= '9') | |
2688 | { | |
8b9ac8b4 PE |
2689 | if (MOST_POSITIVE_FIXNUM / 10 < n |
2690 | || MOST_POSITIVE_FIXNUM < n * 10 + c - '0') | |
2691 | n = MOST_POSITIVE_FIXNUM + 1; | |
2692 | else | |
2693 | n = n * 10 + c - '0'; | |
4ad679f9 EN |
2694 | c = READCHAR; |
2695 | } | |
8b9ac8b4 PE |
2696 | |
2697 | if (n <= MOST_POSITIVE_FIXNUM) | |
4ad679f9 | 2698 | { |
8b9ac8b4 PE |
2699 | if (c == 'r' || c == 'R') |
2700 | return read_integer (readcharfun, n); | |
9e062b6c | 2701 | |
8b9ac8b4 PE |
2702 | if (! NILP (Vread_circle)) |
2703 | { | |
2704 | /* #n=object returns object, but associates it with | |
2705 | n for #n#. */ | |
2706 | if (c == '=') | |
2707 | { | |
48def666 | 2708 | /* Make a placeholder for #n# to use temporarily. */ |
8b9ac8b4 PE |
2709 | Lisp_Object placeholder; |
2710 | Lisp_Object cell; | |
9e062b6c | 2711 | |
8b9ac8b4 PE |
2712 | placeholder = Fcons (Qnil, Qnil); |
2713 | cell = Fcons (make_number (n), placeholder); | |
2714 | read_objects = Fcons (cell, read_objects); | |
9e062b6c | 2715 | |
48def666 | 2716 | /* Read the object itself. */ |
8b9ac8b4 | 2717 | tem = read0 (readcharfun); |
9e062b6c | 2718 | |
48def666 | 2719 | /* Now put it everywhere the placeholder was... */ |
8b9ac8b4 | 2720 | substitute_object_in_subtree (tem, placeholder); |
177c0ea7 | 2721 | |
8b9ac8b4 PE |
2722 | /* ...and #n# will use the real value from now on. */ |
2723 | Fsetcdr (cell, tem); | |
177c0ea7 | 2724 | |
8b9ac8b4 PE |
2725 | return tem; |
2726 | } | |
2727 | ||
2728 | /* #n# returns a previously read object. */ | |
2729 | if (c == '#') | |
2730 | { | |
2731 | tem = Fassq (make_number (n), read_objects); | |
2732 | if (CONSP (tem)) | |
2733 | return XCDR (tem); | |
2734 | } | |
2735 | } | |
2736 | } | |
4ad679f9 EN |
2737 | /* Fall through to error message. */ |
2738 | } | |
bf5d1a17 GM |
2739 | else if (c == 'x' || c == 'X') |
2740 | return read_integer (readcharfun, 16); | |
2741 | else if (c == 'o' || c == 'O') | |
2742 | return read_integer (readcharfun, 8); | |
2743 | else if (c == 'b' || c == 'B') | |
2744 | return read_integer (readcharfun, 2); | |
20ea2964 | 2745 | |
200f684e | 2746 | UNREAD (c); |
e4d29b33 | 2747 | invalid_syntax ("#"); |
078e7b4a JB |
2748 | |
2749 | case ';': | |
2750 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2751 | goto retry; | |
2752 | ||
2753 | case '\'': | |
2754 | { | |
2755 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2756 | } | |
2757 | ||
17634846 | 2758 | case '`': |
9a39b306 TO |
2759 | { |
2760 | int next_char = READCHAR; | |
2761 | UNREAD (next_char); | |
2762 | /* Transition from old-style to new-style: | |
2763 | If we see "(`" it used to mean old-style, which usually works | |
2764 | fine because ` should almost never appear in such a position | |
2765 | for new-style. But occasionally we need "(`" to mean new | |
2766 | style, so we try to distinguish the two by the fact that we | |
2767 | can either write "( `foo" or "(` foo", where the first | |
2768 | intends to use new-style whereas the second intends to use | |
2769 | old-style. For Emacs-25, we should completely remove this | |
2770 | first_in_list exception (old-style can still be obtained via | |
2771 | "(\`" anyway). */ | |
bba3e508 | 2772 | if (!new_backquote_flag && first_in_list && next_char == ' ') |
9a39b306 TO |
2773 | { |
2774 | Vold_style_backquotes = Qt; | |
2775 | goto default_label; | |
2776 | } | |
2777 | else | |
2778 | { | |
2779 | Lisp_Object value; | |
17634846 | 2780 | |
9a39b306 TO |
2781 | new_backquote_flag++; |
2782 | value = read0 (readcharfun); | |
2783 | new_backquote_flag--; | |
17634846 | 2784 | |
9a39b306 TO |
2785 | return Fcons (Qbackquote, Fcons (value, Qnil)); |
2786 | } | |
2787 | } | |
17634846 | 2788 | case ',': |
bba3e508 SM |
2789 | { |
2790 | int next_char = READCHAR; | |
2791 | UNREAD (next_char); | |
2792 | /* Transition from old-style to new-style: | |
2793 | It used to be impossible to have a new-style , other than within | |
2794 | a new-style `. This is sufficient when ` and , are used in the | |
2795 | normal way, but ` and , can also appear in args to macros that | |
2796 | will not interpret them in the usual way, in which case , may be | |
2797 | used without any ` anywhere near. | |
2798 | So we now use the same heuristic as for backquote: old-style | |
2799 | unquotes are only recognized when first on a list, and when | |
2800 | followed by a space. | |
333f9019 | 2801 | Because it's more difficult to peek 2 chars ahead, a new-style |
bba3e508 SM |
2802 | ,@ can still not be used outside of a `, unless it's in the middle |
2803 | of a list. */ | |
2804 | if (new_backquote_flag | |
2805 | || !first_in_list | |
2806 | || (next_char != ' ' && next_char != '@')) | |
2807 | { | |
2808 | Lisp_Object comma_type = Qnil; | |
2809 | Lisp_Object value; | |
2810 | int ch = READCHAR; | |
17634846 | 2811 | |
bba3e508 SM |
2812 | if (ch == '@') |
2813 | comma_type = Qcomma_at; | |
2814 | else if (ch == '.') | |
2815 | comma_type = Qcomma_dot; | |
2816 | else | |
2817 | { | |
2818 | if (ch >= 0) UNREAD (ch); | |
2819 | comma_type = Qcomma; | |
2820 | } | |
17634846 | 2821 | |
bba3e508 SM |
2822 | value = read0 (readcharfun); |
2823 | return Fcons (comma_type, Fcons (value, Qnil)); | |
2824 | } | |
2825 | else | |
2826 | { | |
2827 | Vold_style_backquotes = Qt; | |
2828 | goto default_label; | |
2829 | } | |
2830 | } | |
078e7b4a JB |
2831 | case '?': |
2832 | { | |
8792be66 | 2833 | int modifiers; |
df9c2be7 KS |
2834 | int next_char; |
2835 | int ok; | |
f6f79b37 | 2836 | |
078e7b4a | 2837 | c = READCHAR; |
9c97398c GM |
2838 | if (c < 0) |
2839 | end_of_file_error (); | |
078e7b4a | 2840 | |
b9284371 KS |
2841 | /* Accept `single space' syntax like (list ? x) where the |
2842 | whitespace character is SPC or TAB. | |
2843 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2844 | as there are well-established escape sequences for these. */ | |
2845 | if (c == ' ' || c == '\t') | |
2846 | return make_number (c); | |
2847 | ||
078e7b4a | 2848 | if (c == '\\') |
8792be66 KH |
2849 | c = read_escape (readcharfun, 0); |
2850 | modifiers = c & CHAR_MODIFIER_MASK; | |
2851 | c &= ~CHAR_MODIFIER_MASK; | |
2852 | if (CHAR_BYTE8_P (c)) | |
2853 | c = CHAR_TO_BYTE8 (c); | |
2854 | c |= modifiers; | |
078e7b4a | 2855 | |
df9c2be7 | 2856 | next_char = READCHAR; |
bba3e508 SM |
2857 | ok = (next_char <= 040 |
2858 | || (next_char < 0200 | |
0a6a104b | 2859 | && strchr ("\"';()[]#?`,.", next_char) != NULL)); |
df9c2be7 | 2860 | UNREAD (next_char); |
336d4a9c KS |
2861 | if (ok) |
2862 | return make_number (c); | |
37cd4238 | 2863 | |
e4d29b33 | 2864 | invalid_syntax ("?"); |
078e7b4a JB |
2865 | } |
2866 | ||
00a9a935 | 2867 | case '"': |
078e7b4a | 2868 | { |
a742d646 GM |
2869 | char *p = read_buffer; |
2870 | char *end = read_buffer + read_buffer_size; | |
0902fe45 | 2871 | register int ch; |
1571601b KH |
2872 | /* Nonzero if we saw an escape sequence specifying |
2873 | a multibyte character. */ | |
e7fc914b | 2874 | int force_multibyte = 0; |
1571601b | 2875 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2876 | a single-byte character. */ |
2877 | int force_singlebyte = 0; | |
078e7b4a | 2878 | int cancel = 0; |
82cb60d3 | 2879 | ptrdiff_t nchars = 0; |
078e7b4a | 2880 | |
0902fe45 PE |
2881 | while ((ch = READCHAR) >= 0 |
2882 | && ch != '\"') | |
078e7b4a | 2883 | { |
449fea39 | 2884 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2885 | { |
82cb60d3 | 2886 | ptrdiff_t offset = p - read_buffer; |
20270765 PE |
2887 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
2888 | memory_full (SIZE_MAX); | |
38182d90 | 2889 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 2890 | read_buffer_size *= 2; |
5d65df0d | 2891 | p = read_buffer + offset; |
078e7b4a JB |
2892 | end = read_buffer + read_buffer_size; |
2893 | } | |
bed23cb2 | 2894 | |
0902fe45 | 2895 | if (ch == '\\') |
03e88613 | 2896 | { |
1571601b | 2897 | int modifiers; |
f6f79b37 | 2898 | |
0902fe45 | 2899 | ch = read_escape (readcharfun, 1); |
bed23cb2 | 2900 | |
48def666 | 2901 | /* CH is -1 if \ newline has just been seen. */ |
0902fe45 | 2902 | if (ch == -1) |
03e88613 | 2903 | { |
bed23cb2 RS |
2904 | if (p == read_buffer) |
2905 | cancel = 1; | |
03e88613 RS |
2906 | continue; |
2907 | } | |
bed23cb2 | 2908 | |
0902fe45 PE |
2909 | modifiers = ch & CHAR_MODIFIER_MASK; |
2910 | ch = ch & ~CHAR_MODIFIER_MASK; | |
1571601b | 2911 | |
0902fe45 | 2912 | if (CHAR_BYTE8_P (ch)) |
e7fc914b | 2913 | force_singlebyte = 1; |
0902fe45 | 2914 | else if (! ASCII_CHAR_P (ch)) |
f6f79b37 | 2915 | force_multibyte = 1; |
48def666 | 2916 | else /* I.e. ASCII_CHAR_P (ch). */ |
1571601b KH |
2917 | { |
2918 | /* Allow `\C- ' and `\C-?'. */ | |
2919 | if (modifiers == CHAR_CTL) | |
2920 | { | |
0902fe45 PE |
2921 | if (ch == ' ') |
2922 | ch = 0, modifiers = 0; | |
2923 | else if (ch == '?') | |
2924 | ch = 127, modifiers = 0; | |
1571601b KH |
2925 | } |
2926 | if (modifiers & CHAR_SHIFT) | |
2927 | { | |
2928 | /* Shift modifier is valid only with [A-Za-z]. */ | |
0902fe45 | 2929 | if (ch >= 'A' && ch <= 'Z') |
1571601b | 2930 | modifiers &= ~CHAR_SHIFT; |
0902fe45 PE |
2931 | else if (ch >= 'a' && ch <= 'z') |
2932 | ch -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
1571601b KH |
2933 | } |
2934 | ||
2935 | if (modifiers & CHAR_META) | |
2936 | { | |
2937 | /* Move the meta bit to the right place for a | |
2938 | string. */ | |
2939 | modifiers &= ~CHAR_META; | |
0902fe45 | 2940 | ch = BYTE8_TO_CHAR (ch | 0x80); |
1571601b KH |
2941 | force_singlebyte = 1; |
2942 | } | |
2943 | } | |
5150eeec | 2944 | |
1571601b KH |
2945 | /* Any modifiers remaining are invalid. */ |
2946 | if (modifiers) | |
2947 | error ("Invalid modifier in string"); | |
0902fe45 | 2948 | p += CHAR_STRING (ch, (unsigned char *) p); |
078e7b4a | 2949 | } |
8792be66 | 2950 | else |
5150eeec | 2951 | { |
0902fe45 PE |
2952 | p += CHAR_STRING (ch, (unsigned char *) p); |
2953 | if (CHAR_BYTE8_P (ch)) | |
988f7a0c | 2954 | force_singlebyte = 1; |
0902fe45 | 2955 | else if (! ASCII_CHAR_P (ch)) |
988f7a0c | 2956 | force_multibyte = 1; |
f943104a | 2957 | } |
5150eeec | 2958 | nchars++; |
078e7b4a | 2959 | } |
5150eeec | 2960 | |
0902fe45 | 2961 | if (ch < 0) |
9c97398c | 2962 | end_of_file_error (); |
078e7b4a JB |
2963 | |
2964 | /* If purifying, and string starts with \ newline, | |
2965 | return zero instead. This is for doc strings | |
61b108cc | 2966 | that we are really going to find in etc/DOC.nn.nn. */ |
265a9e55 | 2967 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2968 | return make_number (0); |
2969 | ||
4cfd81f6 | 2970 | if (! force_multibyte && force_singlebyte) |
a742d646 | 2971 | { |
4cfd81f6 PE |
2972 | /* READ_BUFFER contains raw 8-bit bytes and no multibyte |
2973 | forms. Convert it to unibyte. */ | |
4a25e32a PE |
2974 | nchars = str_as_unibyte ((unsigned char *) read_buffer, |
2975 | p - read_buffer); | |
1571601b | 2976 | p = read_buffer + nchars; |
a742d646 | 2977 | } |
e7fc914b | 2978 | |
491f16a2 | 2979 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2980 | (force_multibyte |
2981 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2982 | } |
2983 | ||
109d300c JB |
2984 | case '.': |
2985 | { | |
109d300c JB |
2986 | int next_char = READCHAR; |
2987 | UNREAD (next_char); | |
2988 | ||
035eec48 | 2989 | if (next_char <= 040 |
e613ea97 | 2990 | || (next_char < 0200 |
0a6a104b | 2991 | && strchr ("\"';([#?`,", next_char) != NULL)) |
109d300c | 2992 | { |
6428369f KH |
2993 | *pch = c; |
2994 | return Qnil; | |
109d300c JB |
2995 | } |
2996 | ||
2997 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2998 | below will now loop at least once, assuring that we will not | |
2999 | try to UNREAD two characters in a row. */ | |
3000 | } | |
078e7b4a | 3001 | default: |
17634846 | 3002 | default_label: |
88852d45 | 3003 | if (c <= 040) goto retry; |
ed497dd4 | 3004 | if (c == 0xa0) /* NBSP */ |
adef3de7 | 3005 | goto retry; |
52968808 AS |
3006 | |
3007 | read_symbol: | |
078e7b4a | 3008 | { |
38404229 | 3009 | char *p = read_buffer; |
481c6336 | 3010 | int quoted = 0; |
46cfea45 | 3011 | EMACS_INT start_position = readchar_count - 1; |
078e7b4a JB |
3012 | |
3013 | { | |
38404229 | 3014 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 3015 | |
ef1b0ba7 | 3016 | do |
078e7b4a | 3017 | { |
449fea39 | 3018 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 3019 | { |
82cb60d3 | 3020 | ptrdiff_t offset = p - read_buffer; |
20270765 PE |
3021 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
3022 | memory_full (SIZE_MAX); | |
38182d90 | 3023 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 3024 | read_buffer_size *= 2; |
5d65df0d | 3025 | p = read_buffer + offset; |
078e7b4a JB |
3026 | end = read_buffer + read_buffer_size; |
3027 | } | |
177c0ea7 | 3028 | |
078e7b4a | 3029 | if (c == '\\') |
481c6336 RS |
3030 | { |
3031 | c = READCHAR; | |
4ab11c09 GM |
3032 | if (c == -1) |
3033 | end_of_file_error (); | |
481c6336 RS |
3034 | quoted = 1; |
3035 | } | |
6f7f43d5 | 3036 | |
1202434b | 3037 | if (multibyte) |
4a25e32a | 3038 | p += CHAR_STRING (c, (unsigned char *) p); |
1202434b KH |
3039 | else |
3040 | *p++ = c; | |
078e7b4a | 3041 | c = READCHAR; |
0a6a104b AS |
3042 | } |
3043 | while (c > 040 | |
ed497dd4 | 3044 | && c != 0xa0 /* NBSP */ |
0a6a104b AS |
3045 | && (c >= 0200 |
3046 | || strchr ("\"';()[]#`,", c) == NULL)); | |
078e7b4a JB |
3047 | |
3048 | if (p == end) | |
3049 | { | |
82cb60d3 | 3050 | ptrdiff_t offset = p - read_buffer; |
20270765 PE |
3051 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
3052 | memory_full (SIZE_MAX); | |
38182d90 | 3053 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 3054 | read_buffer_size *= 2; |
5d65df0d GM |
3055 | p = read_buffer + offset; |
3056 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
3057 | } |
3058 | *p = 0; | |
0a6a104b | 3059 | UNREAD (c); |
078e7b4a JB |
3060 | } |
3061 | ||
4ad679f9 | 3062 | if (!quoted && !uninterned_symbol) |
481c6336 | 3063 | { |
452f4150 PE |
3064 | Lisp_Object result = string_to_number (read_buffer, 10, 0); |
3065 | if (! NILP (result)) | |
8b9587d7 | 3066 | return result; |
481c6336 | 3067 | } |
abb13b09 | 3068 | { |
e93abe3d | 3069 | Lisp_Object name, result; |
d311d28c PE |
3070 | ptrdiff_t nbytes = p - read_buffer; |
3071 | ptrdiff_t nchars | |
4a25e32a PE |
3072 | = (multibyte |
3073 | ? multibyte_chars_in_text ((unsigned char *) read_buffer, | |
3074 | nbytes) | |
e93abe3d KH |
3075 | : nbytes); |
3076 | ||
61b108cc SM |
3077 | name = ((uninterned_symbol && ! NILP (Vpurify_flag) |
3078 | ? make_pure_string : make_specified_string) | |
3079 | (read_buffer, nchars, nbytes, multibyte)); | |
e93abe3d KH |
3080 | result = (uninterned_symbol ? Fmake_symbol (name) |
3081 | : Fintern (name, Qnil)); | |
1202434b | 3082 | |
abb13b09 CW |
3083 | if (EQ (Vread_with_symbol_positions, Qt) |
3084 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
61b108cc SM |
3085 | Vread_symbol_positions_list |
3086 | = Fcons (Fcons (result, make_number (start_position)), | |
3087 | Vread_symbol_positions_list); | |
abb13b09 CW |
3088 | return result; |
3089 | } | |
078e7b4a JB |
3090 | } |
3091 | } | |
3092 | } | |
3093 | \f | |
9e062b6c | 3094 | |
48def666 | 3095 | /* List of nodes we've seen during substitute_object_in_subtree. */ |
9e062b6c RS |
3096 | static Lisp_Object seen_list; |
3097 | ||
3098 | static void | |
971de7fb | 3099 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
3100 | { |
3101 | Lisp_Object check_object; | |
3102 | ||
48def666 | 3103 | /* We haven't seen any objects when we start. */ |
9e062b6c RS |
3104 | seen_list = Qnil; |
3105 | ||
48def666 | 3106 | /* Make all the substitutions. */ |
9e062b6c RS |
3107 | check_object |
3108 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3109 | |
48def666 | 3110 | /* Clear seen_list because we're done with it. */ |
9e062b6c RS |
3111 | seen_list = Qnil; |
3112 | ||
3113 | /* The returned object here is expected to always eq the | |
48def666 | 3114 | original. */ |
9e062b6c RS |
3115 | if (!EQ (check_object, object)) |
3116 | error ("Unexpected mutation error in reader"); | |
3117 | } | |
3118 | ||
48def666 | 3119 | /* Feval doesn't get called from here, so no gc protection is needed. */ |
7a3d90dc SM |
3120 | #define SUBSTITUTE(get_val, set_val) \ |
3121 | do { \ | |
3122 | Lisp_Object old_value = get_val; \ | |
3123 | Lisp_Object true_value \ | |
3124 | = substitute_object_recurse (object, placeholder, \ | |
3125 | old_value); \ | |
3126 | \ | |
3127 | if (!EQ (old_value, true_value)) \ | |
3128 | { \ | |
3129 | set_val; \ | |
3130 | } \ | |
3131 | } while (0) | |
9e062b6c RS |
3132 | |
3133 | static Lisp_Object | |
971de7fb | 3134 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c | 3135 | { |
48def666 | 3136 | /* If we find the placeholder, return the target object. */ |
9e062b6c RS |
3137 | if (EQ (placeholder, subtree)) |
3138 | return object; | |
3139 | ||
48def666 | 3140 | /* If we've been to this node before, don't explore it again. */ |
9e062b6c RS |
3141 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) |
3142 | return subtree; | |
3143 | ||
3144 | /* If this node can be the entry point to a cycle, remember that | |
3145 | we've seen it. It can only be such an entry point if it was made | |
3146 | by #n=, which means that we can find it as a value in | |
3147 | read_objects. */ | |
3148 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3149 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3150 | |
9e062b6c RS |
3151 | /* Recurse according to subtree's type. |
3152 | Every branch must return a Lisp_Object. */ | |
3153 | switch (XTYPE (subtree)) | |
3154 | { | |
3155 | case Lisp_Vectorlike: | |
3156 | { | |
82cb60d3 | 3157 | ptrdiff_t i, length = 0; |
7a3d90dc SM |
3158 | if (BOOL_VECTOR_P (subtree)) |
3159 | return subtree; /* No sub-objects anyway. */ | |
3160 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3161 | || COMPILEDP (subtree)) | |
3162 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3163 | else if (VECTORP (subtree)) | |
3164 | length = ASIZE (subtree); | |
3165 | else | |
3166 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3167 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3168 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3169 | behavior. */ |
3170 | wrong_type_argument (Qsequencep, subtree); | |
3171 | ||
9e062b6c | 3172 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3173 | SUBSTITUTE (AREF (subtree, i), |
3174 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3175 | return subtree; |
3176 | } | |
3177 | ||
3178 | case Lisp_Cons: | |
3179 | { | |
7a3d90dc SM |
3180 | SUBSTITUTE (XCAR (subtree), |
3181 | XSETCAR (subtree, true_value)); | |
3182 | SUBSTITUTE (XCDR (subtree), | |
3183 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3184 | return subtree; |
3185 | } | |
3186 | ||
9e062b6c RS |
3187 | case Lisp_String: |
3188 | { | |
3189 | /* Check for text properties in each interval. | |
48def666 | 3190 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3191 | |
ad8c997f | 3192 | INTERVAL root_interval = string_get_intervals (subtree); |
9e062b6c | 3193 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3194 | |
0d74b006 SM |
3195 | traverse_intervals_noorder (root_interval, |
3196 | &substitute_in_interval, arg); | |
9e062b6c RS |
3197 | |
3198 | return subtree; | |
3199 | } | |
9e062b6c | 3200 | |
48def666 | 3201 | /* Other types don't recurse any further. */ |
9e062b6c RS |
3202 | default: |
3203 | return subtree; | |
3204 | } | |
3205 | } | |
3206 | ||
3207 | /* Helper function for substitute_object_recurse. */ | |
3208 | static void | |
971de7fb | 3209 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3210 | { |
3211 | Lisp_Object object = Fcar (arg); | |
3212 | Lisp_Object placeholder = Fcdr (arg); | |
3213 | ||
6a3d20cc | 3214 | SUBSTITUTE (interval->plist, interval_set_plist (interval, true_value)); |
9e062b6c RS |
3215 | } |
3216 | ||
3217 | \f | |
078e7b4a JB |
3218 | #define LEAD_INT 1 |
3219 | #define DOT_CHAR 2 | |
3220 | #define TRAIL_INT 4 | |
452f4150 | 3221 | #define E_EXP 16 |
078e7b4a | 3222 | |
8b9587d7 | 3223 | |
452f4150 PE |
3224 | /* Convert STRING to a number, assuming base BASE. Return a fixnum if CP has |
3225 | integer syntax and fits in a fixnum, else return the nearest float if CP has | |
3226 | either floating point or integer syntax and BASE is 10, else return nil. If | |
3227 | IGNORE_TRAILING is nonzero, consider just the longest prefix of CP that has | |
3228 | valid floating point syntax. Signal an overflow if BASE is not 10 and the | |
3229 | number has integer syntax but does not fit. */ | |
8b9587d7 PE |
3230 | |
3231 | Lisp_Object | |
452f4150 | 3232 | string_to_number (char const *string, int base, int ignore_trailing) |
078e7b4a | 3233 | { |
a8fe7202 | 3234 | int state; |
452f4150 PE |
3235 | char const *cp = string; |
3236 | int leading_digit; | |
3237 | int float_syntax = 0; | |
3238 | double value = 0; | |
d8578e58 | 3239 | |
8b9587d7 PE |
3240 | /* Compute NaN and infinities using a variable, to cope with compilers that |
3241 | think they are smarter than we are. */ | |
3242 | double zero = 0; | |
3243 | ||
3244 | /* Negate the value ourselves. This treats 0, NaNs, and infinity properly on | |
3245 | IEEE floating point hosts, and works around a formerly-common bug where | |
3246 | atof ("-0.0") drops the sign. */ | |
3247 | int negative = *cp == '-'; | |
3248 | ||
452f4150 PE |
3249 | int signedp = negative || *cp == '+'; |
3250 | cp += signedp; | |
8b9587d7 | 3251 | |
078e7b4a | 3252 | state = 0; |
078e7b4a | 3253 | |
452f4150 PE |
3254 | leading_digit = digit_to_number (*cp, base); |
3255 | if (0 <= leading_digit) | |
078e7b4a JB |
3256 | { |
3257 | state |= LEAD_INT; | |
452f4150 PE |
3258 | do |
3259 | ++cp; | |
3260 | while (0 <= digit_to_number (*cp, base)); | |
078e7b4a JB |
3261 | } |
3262 | if (*cp == '.') | |
3263 | { | |
3264 | state |= DOT_CHAR; | |
3265 | cp++; | |
3266 | } | |
078e7b4a | 3267 | |
452f4150 | 3268 | if (base == 10) |
eb659c41 | 3269 | { |
452f4150 PE |
3270 | if ('0' <= *cp && *cp <= '9') |
3271 | { | |
3272 | state |= TRAIL_INT; | |
3273 | do | |
3274 | cp++; | |
3275 | while ('0' <= *cp && *cp <= '9'); | |
3276 | } | |
3277 | if (*cp == 'e' || *cp == 'E') | |
3278 | { | |
3279 | char const *ecp = cp; | |
3280 | cp++; | |
3281 | if (*cp == '+' || *cp == '-') | |
3282 | cp++; | |
3283 | if ('0' <= *cp && *cp <= '9') | |
3284 | { | |
3285 | state |= E_EXP; | |
3286 | do | |
3287 | cp++; | |
3288 | while ('0' <= *cp && *cp <= '9'); | |
3289 | } | |
3290 | else if (cp[-1] == '+' | |
3291 | && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') | |
3292 | { | |
3293 | state |= E_EXP; | |
3294 | cp += 3; | |
3295 | value = 1.0 / zero; | |
3296 | } | |
3297 | else if (cp[-1] == '+' | |
3298 | && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3299 | { | |
3300 | state |= E_EXP; | |
3301 | cp += 3; | |
3302 | value = zero / zero; | |
3303 | ||
3304 | /* If that made a "negative" NaN, negate it. */ | |
3305 | { | |
3306 | int i; | |
3307 | union { double d; char c[sizeof (double)]; } | |
3308 | u_data, u_minus_zero; | |
3309 | u_data.d = value; | |
3310 | u_minus_zero.d = -0.0; | |
3311 | for (i = 0; i < sizeof (double); i++) | |
3312 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3313 | { | |
3314 | value = -value; | |
3315 | break; | |
3316 | } | |
3317 | } | |
3318 | /* Now VALUE is a positive NaN. */ | |
3319 | } | |
3320 | else | |
3321 | cp = ecp; | |
3322 | } | |
3323 | ||
3324 | float_syntax = ((state & (DOT_CHAR|TRAIL_INT)) == (DOT_CHAR|TRAIL_INT) | |
3325 | || state == (LEAD_INT|E_EXP)); | |
eb659c41 | 3326 | } |
8b9587d7 | 3327 | |
452f4150 PE |
3328 | /* Return nil if the number uses invalid syntax. If IGNORE_TRAILING, accept |
3329 | any prefix that matches. Otherwise, the entire string must match. */ | |
3330 | if (! (ignore_trailing | |
3331 | ? ((state & LEAD_INT) != 0 || float_syntax) | |
3332 | : (!*cp && ((state & ~DOT_CHAR) == LEAD_INT || float_syntax)))) | |
3333 | return Qnil; | |
8b9587d7 | 3334 | |
d78050d6 PE |
3335 | /* If the number uses integer and not float syntax, and is in C-language |
3336 | range, use its value, preferably as a fixnum. */ | |
452f4150 PE |
3337 | if (0 <= leading_digit && ! float_syntax) |
3338 | { | |
d78050d6 PE |
3339 | uintmax_t n; |
3340 | ||
3341 | /* Fast special case for single-digit integers. This also avoids a | |
3342 | glitch when BASE is 16 and IGNORE_TRAILING is nonzero, because in that | |
3343 | case some versions of strtoumax accept numbers like "0x1" that Emacs | |
3344 | does not allow. */ | |
3345 | if (digit_to_number (string[signedp + 1], base) < 0) | |
3346 | return make_number (negative ? -leading_digit : leading_digit); | |
3347 | ||
3348 | errno = 0; | |
3349 | n = strtoumax (string + signedp, NULL, base); | |
3350 | if (errno == ERANGE) | |
452f4150 | 3351 | { |
d78050d6 PE |
3352 | /* Unfortunately there's no simple and accurate way to convert |
3353 | non-base-10 numbers that are out of C-language range. */ | |
3354 | if (base != 10) | |
f14ed477 | 3355 | xsignal1 (Qoverflow_error, build_string (string)); |
452f4150 | 3356 | } |
d78050d6 PE |
3357 | else if (n <= (negative ? -MOST_NEGATIVE_FIXNUM : MOST_POSITIVE_FIXNUM)) |
3358 | { | |
3359 | EMACS_INT signed_n = n; | |
3360 | return make_number (negative ? -signed_n : signed_n); | |
3361 | } | |
3362 | else | |
3363 | value = n; | |
452f4150 | 3364 | } |
8b9587d7 | 3365 | |
452f4150 PE |
3366 | /* Either the number uses float syntax, or it does not fit into a fixnum. |
3367 | Convert it from string to floating point, unless the value is already | |
d78050d6 PE |
3368 | known because it is an infinity, a NAN, or its absolute value fits in |
3369 | uintmax_t. */ | |
8b9587d7 | 3370 | if (! value) |
452f4150 PE |
3371 | value = atof (string + signedp); |
3372 | ||
d78050d6 | 3373 | return make_float (negative ? -value : value); |
078e7b4a | 3374 | } |
cc94f3b2 | 3375 | |
078e7b4a JB |
3376 | \f |
3377 | static Lisp_Object | |
876c194c | 3378 | read_vector (Lisp_Object readcharfun, int bytecodeflag) |
078e7b4a | 3379 | { |
82cb60d3 | 3380 | ptrdiff_t i, size; |
078e7b4a | 3381 | register Lisp_Object *ptr; |
c15cfd1f | 3382 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3383 | register struct Lisp_Cons *otem; |
3384 | Lisp_Object len; | |
3385 | ||
3386 | tem = read_list (1, readcharfun); | |
3387 | len = Flength (tem); | |
48def666 | 3388 | vector = Fmake_vector (len, Qnil); |
078e7b4a | 3389 | |
77b37c05 | 3390 | size = ASIZE (vector); |
078e7b4a JB |
3391 | ptr = XVECTOR (vector)->contents; |
3392 | for (i = 0; i < size; i++) | |
3393 | { | |
c15cfd1f RS |
3394 | item = Fcar (tem); |
3395 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3396 | bytecode object, the docstring containing the bytecode and | |
3397 | constants values must be treated as unibyte and passed to | |
3398 | Fread, to get the actual bytecode string and constants vector. */ | |
876c194c | 3399 | if (bytecodeflag && load_force_doc_strings) |
c15cfd1f RS |
3400 | { |
3401 | if (i == COMPILED_BYTECODE) | |
3402 | { | |
3403 | if (!STRINGP (item)) | |
6fa2b890 | 3404 | error ("Invalid byte code"); |
c15cfd1f RS |
3405 | |
3406 | /* Delay handling the bytecode slot until we know whether | |
3407 | it is lazily-loaded (we can tell by whether the | |
3408 | constants slot is nil). */ | |
3409 | ptr[COMPILED_CONSTANTS] = item; | |
3410 | item = Qnil; | |
3411 | } | |
3412 | else if (i == COMPILED_CONSTANTS) | |
3413 | { | |
3414 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3415 | ||
3416 | if (NILP (item)) | |
3417 | { | |
3418 | /* Coerce string to unibyte (like string-as-unibyte, | |
3419 | but without generating extra garbage and | |
3420 | guaranteeing no change in the contents). */ | |
bee91904 | 3421 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3422 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3423 | |
8792be66 | 3424 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3425 | if (!CONSP (item)) |
6fa2b890 | 3426 | error ("Invalid byte code"); |
c15cfd1f RS |
3427 | |
3428 | otem = XCONS (item); | |
c1d497be KR |
3429 | bytestr = XCAR (item); |
3430 | item = XCDR (item); | |
c15cfd1f RS |
3431 | free_cons (otem); |
3432 | } | |
3433 | ||
3434 | /* Now handle the bytecode slot. */ | |
48def666 | 3435 | ptr[COMPILED_BYTECODE] = bytestr; |
c15cfd1f | 3436 | } |
8792be66 KH |
3437 | else if (i == COMPILED_DOC_STRING |
3438 | && STRINGP (item) | |
3439 | && ! STRING_MULTIBYTE (item)) | |
3440 | { | |
3441 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3442 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3443 | else | |
3444 | item = Fstring_as_multibyte (item); | |
3445 | } | |
c15cfd1f | 3446 | } |
48def666 | 3447 | ptr[i] = item; |
078e7b4a JB |
3448 | otem = XCONS (tem); |
3449 | tem = Fcdr (tem); | |
3450 | free_cons (otem); | |
3451 | } | |
3452 | return vector; | |
3453 | } | |
177c0ea7 | 3454 | |
48def666 | 3455 | /* FLAG = 1 means check for ] to terminate rather than ) and . */ |
078e7b4a JB |
3456 | |
3457 | static Lisp_Object | |
971de7fb | 3458 | read_list (int flag, register Lisp_Object readcharfun) |
078e7b4a | 3459 | { |
078e7b4a JB |
3460 | Lisp_Object val, tail; |
3461 | register Lisp_Object elt, tem; | |
3462 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3463 | /* 0 is the normal case. |
b2a30870 | 3464 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3465 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3466 | int doc_reference = 0; |
078e7b4a | 3467 | |
17634846 RS |
3468 | /* Initialize this to 1 if we are reading a list. */ |
3469 | int first_in_list = flag <= 0; | |
3470 | ||
078e7b4a JB |
3471 | val = Qnil; |
3472 | tail = Qnil; | |
3473 | ||
3474 | while (1) | |
3475 | { | |
e28552a4 | 3476 | int ch; |
078e7b4a | 3477 | GCPRO2 (val, tail); |
17634846 | 3478 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3479 | UNGCPRO; |
20ea2964 | 3480 | |
17634846 RS |
3481 | first_in_list = 0; |
3482 | ||
821d417e | 3483 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3484 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3485 | && ! NILP (elt) |
821d417e RS |
3486 | && !NILP (Vpurify_flag)) |
3487 | { | |
3488 | if (NILP (Vdoc_file_name)) | |
3489 | /* We have not yet called Snarf-documentation, so assume | |
3490 | this file is described in the DOC-MM.NN file | |
3491 | and Snarf-documentation will fill in the right value later. | |
3492 | For now, replace the whole list with 0. */ | |
3493 | doc_reference = 1; | |
3494 | else | |
3495 | /* We have already called Snarf-documentation, so make a relative | |
3496 | file name for this file, so it can be found properly | |
3497 | in the installed Lisp directory. | |
3498 | We don't use Fexpand_file_name because that would make | |
3499 | the directory absolute now. */ | |
3500 | elt = concat2 (build_string ("../lisp/"), | |
61b108cc | 3501 | Ffile_name_nondirectory (elt)); |
821d417e | 3502 | } |
b2a30870 | 3503 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3504 | && ! NILP (elt) |
b2a30870 RS |
3505 | && load_force_doc_strings) |
3506 | doc_reference = 2; | |
20ea2964 | 3507 | |
6428369f | 3508 | if (ch) |
078e7b4a JB |
3509 | { |
3510 | if (flag > 0) | |
3511 | { | |
6428369f | 3512 | if (ch == ']') |
078e7b4a | 3513 | return val; |
e4d29b33 | 3514 | invalid_syntax (") or . in a vector"); |
078e7b4a | 3515 | } |
6428369f | 3516 | if (ch == ')') |
078e7b4a | 3517 | return val; |
6428369f | 3518 | if (ch == '.') |
078e7b4a JB |
3519 | { |
3520 | GCPRO2 (val, tail); | |
265a9e55 | 3521 | if (!NILP (tail)) |
f5df591a | 3522 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3523 | else |
3524 | val = read0 (readcharfun); | |
17634846 | 3525 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3526 | UNGCPRO; |
6428369f | 3527 | if (ch == ')') |
821d417e RS |
3528 | { |
3529 | if (doc_reference == 1) | |
3530 | return make_number (0); | |
b2a30870 RS |
3531 | if (doc_reference == 2) |
3532 | { | |
3533 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3534 | If it's in saved_doc_string, get it from there. |
3535 | ||
3536 | Here, we don't know if the string is a | |
3537 | bytecode string or a doc string. As a | |
3538 | bytecode string must be unibyte, we always | |
3539 | return a unibyte string. If it is actually a | |
3540 | doc string, caller must make it | |
3541 | multibyte. */ | |
8f924df7 | 3542 | |
bfbbd7e7 | 3543 | EMACS_INT pos = XINT (XCDR (val)); |
c15cfd1f RS |
3544 | /* Position is negative for user variables. */ |
3545 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3546 | if (pos >= saved_doc_string_position |
3547 | && pos < (saved_doc_string_position | |
3548 | + saved_doc_string_length)) | |
3549 | { | |
82cb60d3 PE |
3550 | ptrdiff_t start = pos - saved_doc_string_position; |
3551 | ptrdiff_t from, to; | |
b2a30870 RS |
3552 | |
3553 | /* Process quoting with ^A, | |
3554 | and find the end of the string, | |
3555 | which is marked with ^_ (037). */ | |
3556 | for (from = start, to = start; | |
3557 | saved_doc_string[from] != 037;) | |
3558 | { | |
3559 | int c = saved_doc_string[from++]; | |
3560 | if (c == 1) | |
3561 | { | |
3562 | c = saved_doc_string[from++]; | |
3563 | if (c == 1) | |
3564 | saved_doc_string[to++] = c; | |
3565 | else if (c == '0') | |
3566 | saved_doc_string[to++] = 0; | |
3567 | else if (c == '_') | |
3568 | saved_doc_string[to++] = 037; | |
3569 | } | |
3570 | else | |
3571 | saved_doc_string[to++] = c; | |
3572 | } | |
3573 | ||
8792be66 KH |
3574 | return make_unibyte_string (saved_doc_string + start, |
3575 | to - start); | |
b2a30870 | 3576 | } |
c15cfd1f RS |
3577 | /* Look in prev_saved_doc_string the same way. */ |
3578 | else if (pos >= prev_saved_doc_string_position | |
3579 | && pos < (prev_saved_doc_string_position | |
3580 | + prev_saved_doc_string_length)) | |
3581 | { | |
82cb60d3 PE |
3582 | ptrdiff_t start = |
3583 | pos - prev_saved_doc_string_position; | |
3584 | ptrdiff_t from, to; | |
c15cfd1f RS |
3585 | |
3586 | /* Process quoting with ^A, | |
3587 | and find the end of the string, | |
3588 | which is marked with ^_ (037). */ | |
3589 | for (from = start, to = start; | |
3590 | prev_saved_doc_string[from] != 037;) | |
3591 | { | |
3592 | int c = prev_saved_doc_string[from++]; | |
3593 | if (c == 1) | |
3594 | { | |
3595 | c = prev_saved_doc_string[from++]; | |
3596 | if (c == 1) | |
3597 | prev_saved_doc_string[to++] = c; | |
3598 | else if (c == '0') | |
3599 | prev_saved_doc_string[to++] = 0; | |
3600 | else if (c == '_') | |
3601 | prev_saved_doc_string[to++] = 037; | |
3602 | } | |
3603 | else | |
3604 | prev_saved_doc_string[to++] = c; | |
3605 | } | |
3606 | ||
8792be66 KH |
3607 | return make_unibyte_string (prev_saved_doc_string |
3608 | + start, | |
3609 | to - start); | |
c15cfd1f | 3610 | } |
b2a30870 | 3611 | else |
8792be66 | 3612 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3613 | } |
3614 | ||
821d417e RS |
3615 | return val; |
3616 | } | |
e4d29b33 | 3617 | invalid_syntax (". in wrong context"); |
078e7b4a | 3618 | } |
e4d29b33 | 3619 | invalid_syntax ("] in a list"); |
078e7b4a | 3620 | } |
48def666 | 3621 | tem = Fcons (elt, Qnil); |
265a9e55 | 3622 | if (!NILP (tail)) |
f5df591a | 3623 | XSETCDR (tail, tem); |
078e7b4a JB |
3624 | else |
3625 | val = tem; | |
3626 | tail = tem; | |
078e7b4a JB |
3627 | } |
3628 | } | |
3629 | \f | |
1e3890d1 | 3630 | static Lisp_Object initial_obarray; |
078e7b4a | 3631 | |
48def666 | 3632 | /* `oblookup' stores the bucket number here, for the sake of Funintern. */ |
d007f5c8 | 3633 | |
2f30ecd0 | 3634 | static size_t oblookup_last_bucket_number; |
d007f5c8 | 3635 | |
d007f5c8 RS |
3636 | /* Get an error if OBARRAY is not an obarray. |
3637 | If it is one, return it. */ | |
3638 | ||
078e7b4a | 3639 | Lisp_Object |
971de7fb | 3640 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3641 | { |
77b37c05 | 3642 | if (!VECTORP (obarray) || ASIZE (obarray) == 0) |
078e7b4a JB |
3643 | { |
3644 | /* If Vobarray is now invalid, force it to be valid. */ | |
3645 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3646 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3647 | } |
3648 | return obarray; | |
3649 | } | |
3650 | ||
d007f5c8 RS |
3651 | /* Intern the C string STR: return a symbol with that name, |
3652 | interned in the current obarray. */ | |
078e7b4a JB |
3653 | |
3654 | Lisp_Object | |
e8df9267 | 3655 | intern_1 (const char *str, ptrdiff_t len) |
078e7b4a | 3656 | { |
e8df9267 DA |
3657 | Lisp_Object obarray = check_obarray (Vobarray); |
3658 | Lisp_Object tem = oblookup (obarray, str, len, len); | |
078e7b4a | 3659 | |
e8df9267 | 3660 | return SYMBOLP (tem) ? tem : Fintern (make_string (str, len), obarray); |
078e7b4a | 3661 | } |
4ad679f9 | 3662 | |
5e2327cf | 3663 | Lisp_Object |
e8df9267 | 3664 | intern_c_string_1 (const char *str, ptrdiff_t len) |
5e2327cf | 3665 | { |
e8df9267 DA |
3666 | Lisp_Object obarray = check_obarray (Vobarray); |
3667 | Lisp_Object tem = oblookup (obarray, str, len, len); | |
5e2327cf | 3668 | |
5e2327cf DN |
3669 | if (SYMBOLP (tem)) |
3670 | return tem; | |
3671 | ||
3672 | if (NILP (Vpurify_flag)) | |
3673 | /* Creating a non-pure string from a string literal not | |
3674 | implemented yet. We could just use make_string here and live | |
3675 | with the extra copy. */ | |
3676 | abort (); | |
3677 | ||
2a0213a6 | 3678 | return Fintern (make_pure_c_string (str, len), obarray); |
5e2327cf | 3679 | } |
d007f5c8 | 3680 | \f |
a7ca3326 | 3681 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3682 | doc: /* Return the canonical symbol whose name is STRING. |
3683 | If there is none, one is created by this function and returned. | |
3684 | A second optional argument specifies the obarray to use; | |
3685 | it defaults to the value of `obarray'. */) | |
5842a27b | 3686 | (Lisp_Object string, Lisp_Object obarray) |
078e7b4a JB |
3687 | { |
3688 | register Lisp_Object tem, sym, *ptr; | |
3689 | ||
265a9e55 | 3690 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3691 | obarray = check_obarray (obarray); |
3692 | ||
b7826503 | 3693 | CHECK_STRING (string); |
078e7b4a | 3694 | |
42a5b22f | 3695 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3696 | SCHARS (string), |
3697 | SBYTES (string)); | |
cfff016d | 3698 | if (!INTEGERP (tem)) |
078e7b4a JB |
3699 | return tem; |
3700 | ||
265a9e55 | 3701 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3702 | string = Fpurecopy (string); |
3703 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3704 | |
3705 | if (EQ (obarray, initial_obarray)) | |
3706 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3707 | else | |
3708 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3709 | |
d5db4077 | 3710 | if ((SREF (string, 0) == ':') |
a458d45d | 3711 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3712 | { |
3713 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3714 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3715 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3716 | } |
a0549832 | 3717 | |
4939150c | 3718 | ptr = aref_addr (obarray, XINT(tem)); |
cfff016d | 3719 | if (SYMBOLP (*ptr)) |
c644523b | 3720 | set_symbol_next (sym, XSYMBOL (*ptr)); |
078e7b4a | 3721 | else |
c644523b | 3722 | set_symbol_next (sym, NULL); |
078e7b4a JB |
3723 | *ptr = sym; |
3724 | return sym; | |
3725 | } | |
3726 | ||
a7ca3326 | 3727 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, |
5de38842 PJ |
3728 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3729 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3730 | symbol is searched for. | |
3731 | A second optional argument specifies the obarray to use; | |
3732 | it defaults to the value of `obarray'. */) | |
5842a27b | 3733 | (Lisp_Object name, Lisp_Object obarray) |
078e7b4a | 3734 | { |
c2d47f4b | 3735 | register Lisp_Object tem, string; |
078e7b4a | 3736 | |
265a9e55 | 3737 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3738 | obarray = check_obarray (obarray); |
3739 | ||
b55048d4 GM |
3740 | if (!SYMBOLP (name)) |
3741 | { | |
b7826503 | 3742 | CHECK_STRING (name); |
c2d47f4b | 3743 | string = name; |
b55048d4 GM |
3744 | } |
3745 | else | |
c2d47f4b | 3746 | string = SYMBOL_NAME (name); |
078e7b4a | 3747 | |
42a5b22f | 3748 | tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3749 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3750 | return Qnil; | |
3751 | else | |
078e7b4a | 3752 | return tem; |
078e7b4a | 3753 | } |
d007f5c8 | 3754 | \f |
a7ca3326 | 3755 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, |
5de38842 PJ |
3756 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3757 | The value is t if a symbol was found and deleted, nil otherwise. | |
3758 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3759 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3760 | OBARRAY defaults to the value of the variable `obarray'. */) | |
5842a27b | 3761 | (Lisp_Object name, Lisp_Object obarray) |
d007f5c8 RS |
3762 | { |
3763 | register Lisp_Object string, tem; | |
2f30ecd0 | 3764 | size_t hash; |
d007f5c8 RS |
3765 | |
3766 | if (NILP (obarray)) obarray = Vobarray; | |
3767 | obarray = check_obarray (obarray); | |
3768 | ||
3769 | if (SYMBOLP (name)) | |
d4c83cae | 3770 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3771 | else |
3772 | { | |
b7826503 | 3773 | CHECK_STRING (name); |
d007f5c8 RS |
3774 | string = name; |
3775 | } | |
3776 | ||
42a5b22f | 3777 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3778 | SCHARS (string), |
3779 | SBYTES (string)); | |
d007f5c8 RS |
3780 | if (INTEGERP (tem)) |
3781 | return Qnil; | |
3782 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3783 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3784 | return Qnil; | |
3785 | ||
8ab1650e SM |
3786 | /* There are plenty of other symbols which will screw up the Emacs |
3787 | session if we unintern them, as well as even more ways to use | |
3788 | `setq' or `fset' or whatnot to make the Emacs session | |
3789 | unusable. Let's not go down this silly road. --Stef */ | |
3790 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3791 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3792 | |
44c6c019 | 3793 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3794 | |
d007f5c8 RS |
3795 | hash = oblookup_last_bucket_number; |
3796 | ||
28be1ada | 3797 | if (EQ (AREF (obarray, hash), tem)) |
b2a30870 RS |
3798 | { |
3799 | if (XSYMBOL (tem)->next) | |
4939150c PE |
3800 | { |
3801 | Lisp_Object sym; | |
3802 | XSETSYMBOL (sym, XSYMBOL (tem)->next); | |
3803 | ASET (obarray, hash, sym); | |
3804 | } | |
b2a30870 | 3805 | else |
4939150c | 3806 | ASET (obarray, hash, make_number (0)); |
b2a30870 | 3807 | } |
d007f5c8 RS |
3808 | else |
3809 | { | |
3810 | Lisp_Object tail, following; | |
3811 | ||
28be1ada | 3812 | for (tail = AREF (obarray, hash); |
d007f5c8 RS |
3813 | XSYMBOL (tail)->next; |
3814 | tail = following) | |
3815 | { | |
3816 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3817 | if (EQ (following, tem)) | |
3818 | { | |
c644523b | 3819 | set_symbol_next (tail, XSYMBOL (following)->next); |
d007f5c8 RS |
3820 | break; |
3821 | } | |
3822 | } | |
3823 | } | |
3824 | ||
3825 | return Qt; | |
3826 | } | |
3827 | \f | |
3828 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3829 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3830 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3831 | |
3832 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3833 | |
3834 | Lisp_Object | |
d311d28c | 3835 | oblookup (Lisp_Object obarray, register const char *ptr, ptrdiff_t size, ptrdiff_t size_byte) |
078e7b4a | 3836 | { |
2f30ecd0 PE |
3837 | size_t hash; |
3838 | size_t obsize; | |
078e7b4a JB |
3839 | register Lisp_Object tail; |
3840 | Lisp_Object bucket, tem; | |
3841 | ||
2bce5643 DA |
3842 | obarray = check_obarray (obarray); |
3843 | obsize = ASIZE (obarray); | |
3844 | ||
519418b3 RS |
3845 | /* This is sometimes needed in the middle of GC. */ |
3846 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3847 | hash = hash_string (ptr, size_byte) % obsize; |
28be1ada | 3848 | bucket = AREF (obarray, hash); |
d007f5c8 | 3849 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3850 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3851 | ; |
cfff016d | 3852 | else if (!SYMBOLP (bucket)) |
48def666 | 3853 | error ("Bad data in guts of obarray"); /* Like CADR error message. */ |
d007f5c8 RS |
3854 | else |
3855 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3856 | { |
d5db4077 KR |
3857 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3858 | && SCHARS (SYMBOL_NAME (tail)) == size | |
72af86bd | 3859 | && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) |
078e7b4a JB |
3860 | return tail; |
3861 | else if (XSYMBOL (tail)->next == 0) | |
3862 | break; | |
3863 | } | |
1805de4f | 3864 | XSETINT (tem, hash); |
078e7b4a JB |
3865 | return tem; |
3866 | } | |
d007f5c8 | 3867 | \f |
078e7b4a | 3868 | void |
971de7fb | 3869 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a | 3870 | { |
82cb60d3 | 3871 | ptrdiff_t i; |
078e7b4a | 3872 | register Lisp_Object tail; |
b7826503 | 3873 | CHECK_VECTOR (obarray); |
77b37c05 | 3874 | for (i = ASIZE (obarray) - 1; i >= 0; i--) |
078e7b4a | 3875 | { |
28be1ada | 3876 | tail = AREF (obarray, i); |
4f5c4403 | 3877 | if (SYMBOLP (tail)) |
078e7b4a JB |
3878 | while (1) |
3879 | { | |
3880 | (*fn) (tail, arg); | |
3881 | if (XSYMBOL (tail)->next == 0) | |
3882 | break; | |
1805de4f | 3883 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3884 | } |
3885 | } | |
3886 | } | |
3887 | ||
7d383292 | 3888 | static void |
971de7fb | 3889 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3890 | { |
3891 | call1 (function, sym); | |
3892 | } | |
3893 | ||
3894 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3895 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3896 | OBARRAY defaults to the value of `obarray'. */) | |
5842a27b | 3897 | (Lisp_Object function, Lisp_Object obarray) |
078e7b4a | 3898 | { |
265a9e55 | 3899 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3900 | obarray = check_obarray (obarray); |
3901 | ||
3902 | map_obarray (obarray, mapatoms_1, function); | |
3903 | return Qnil; | |
3904 | } | |
3905 | ||
5e88a39e | 3906 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3907 | |
3908 | void | |
971de7fb | 3909 | init_obarray (void) |
078e7b4a JB |
3910 | { |
3911 | Lisp_Object oblength; | |
37d0112b | 3912 | ptrdiff_t size = 100 + MAX_MULTIBYTE_LENGTH; |
078e7b4a | 3913 | |
baf69866 | 3914 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3915 | |
078e7b4a JB |
3916 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3917 | initial_obarray = Vobarray; | |
3918 | staticpro (&initial_obarray); | |
078e7b4a | 3919 | |
2a0213a6 | 3920 | Qunbound = Fmake_symbol (build_pure_c_string ("unbound")); |
ce5b453a SM |
3921 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
3922 | NILP (Vpurify_flag) check in intern_c_string. */ | |
3923 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
3924 | Qnil = intern_c_string ("nil"); | |
3925 | ||
3926 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
53964682 | 3927 | so those two need to be fixed manually. */ |
ce5b453a | 3928 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); |
c644523b DA |
3929 | set_symbol_function (Qunbound, Qunbound); |
3930 | set_symbol_plist (Qunbound, Qnil); | |
ce5b453a SM |
3931 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); |
3932 | XSYMBOL (Qnil)->constant = 1; | |
9660f5fc | 3933 | XSYMBOL (Qnil)->declared_special = 1; |
c644523b | 3934 | set_symbol_plist (Qnil, Qnil); |
078e7b4a | 3935 | |
d67b4f80 | 3936 | Qt = intern_c_string ("t"); |
ce5b453a | 3937 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
9660f5fc | 3938 | XSYMBOL (Qnil)->declared_special = 1; |
44c6c019 | 3939 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3940 | |
3941 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3942 | Vpurify_flag = Qt; | |
3943 | ||
cd3520a4 | 3944 | DEFSYM (Qvariable_documentation, "variable-documentation"); |
078e7b4a | 3945 | |
23f86fce | 3946 | read_buffer = xmalloc (size); |
37d0112b | 3947 | read_buffer_size = size; |
078e7b4a JB |
3948 | } |
3949 | \f | |
3950 | void | |
971de7fb | 3951 | defsubr (struct Lisp_Subr *sname) |
078e7b4a | 3952 | { |
c644523b | 3953 | Lisp_Object sym, tem; |
d67b4f80 | 3954 | sym = intern_c_string (sname->symbol_name); |
eab3844f | 3955 | XSETTYPED_PVECTYPE (sname, size, PVEC_SUBR); |
c644523b DA |
3956 | XSETSUBR (tem, sname); |
3957 | set_symbol_function (sym, tem); | |
078e7b4a JB |
3958 | } |
3959 | ||
48def666 | 3960 | #ifdef NOTDEF /* Use fset in subr.el now! */ |
078e7b4a | 3961 | void |
1dae0f0a | 3962 | defalias (struct Lisp_Subr *sname, char *string) |
078e7b4a JB |
3963 | { |
3964 | Lisp_Object sym; | |
3965 | sym = intern (string); | |
1805de4f | 3966 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3967 | } |
3968 | #endif /* NOTDEF */ | |
3969 | ||
039c6cc3 | 3970 | /* Define an "integer variable"; a symbol whose value is forwarded to a |
82cb60d3 | 3971 | C variable of type EMACS_INT. Sample call (with "xx" to fool make-docfile): |
039c6cc3 | 3972 | DEFxxVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ |
078e7b4a | 3973 | void |
ce5b453a SM |
3974 | defvar_int (struct Lisp_Intfwd *i_fwd, |
3975 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 3976 | { |
ce5b453a | 3977 | Lisp_Object sym; |
5e2327cf | 3978 | sym = intern_c_string (namestring); |
ce5b453a SM |
3979 | i_fwd->type = Lisp_Fwd_Int; |
3980 | i_fwd->intvar = address; | |
b9598260 | 3981 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
3982 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
3983 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
3984 | } |
3985 | ||
f0529b5b | 3986 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 3987 | nil if address contains 0. */ |
078e7b4a | 3988 | void |
ce5b453a | 3989 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
f5d9e83a | 3990 | const char *namestring, bool *address) |
078e7b4a | 3991 | { |
ce5b453a | 3992 | Lisp_Object sym; |
5e2327cf | 3993 | sym = intern_c_string (namestring); |
ce5b453a SM |
3994 | b_fwd->type = Lisp_Fwd_Bool; |
3995 | b_fwd->boolvar = address; | |
b9598260 | 3996 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
3997 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
3998 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 3999 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
4000 | } |
4001 | ||
1a0f90f7 KH |
4002 | /* Similar but define a variable whose value is the Lisp Object stored |
4003 | at address. Two versions: with and without gc-marking of the C | |
4004 | variable. The nopro version is used when that variable will be | |
4005 | gc-marked for some other reason, since marking the same slot twice | |
4006 | can cause trouble with strings. */ | |
078e7b4a | 4007 | void |
ce5b453a SM |
4008 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
4009 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4010 | { |
ce5b453a | 4011 | Lisp_Object sym; |
5e2327cf | 4012 | sym = intern_c_string (namestring); |
ce5b453a SM |
4013 | o_fwd->type = Lisp_Fwd_Obj; |
4014 | o_fwd->objvar = address; | |
b9598260 | 4015 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4016 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4017 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
4018 | } |
4019 | ||
078e7b4a | 4020 | void |
ce5b453a SM |
4021 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
4022 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4023 | { |
ce5b453a | 4024 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 4025 | staticpro (address); |
078e7b4a JB |
4026 | } |
4027 | ||
950c215d | 4028 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 4029 | at a particular offset in the current kboard object. */ |
950c215d KH |
4030 | |
4031 | void | |
ce5b453a SM |
4032 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
4033 | const char *namestring, int offset) | |
950c215d | 4034 | { |
ce5b453a | 4035 | Lisp_Object sym; |
5e2327cf | 4036 | sym = intern_c_string (namestring); |
ce5b453a SM |
4037 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
4038 | ko_fwd->offset = offset; | |
b9598260 | 4039 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4040 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4041 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 4042 | } |
078e7b4a | 4043 | \f |
929e7845 GM |
4044 | /* Check that the elements of Vload_path exist. */ |
4045 | ||
b3350bf9 | 4046 | static void |
929e7845 GM |
4047 | load_path_check (void) |
4048 | { | |
4049 | Lisp_Object path_tail; | |
4050 | ||
4051 | /* The only elements that might not exist are those from | |
4052 | PATH_LOADSEARCH, EMACSLOADPATH. Anything else is only added if | |
4053 | it exists. */ | |
4054 | for (path_tail = Vload_path; !NILP (path_tail); path_tail = XCDR (path_tail)) | |
4055 | { | |
4056 | Lisp_Object dirfile; | |
4057 | dirfile = Fcar (path_tail); | |
4058 | if (STRINGP (dirfile)) | |
4059 | { | |
4060 | dirfile = Fdirectory_file_name (dirfile); | |
4061 | if (access (SSDATA (dirfile), 0) < 0) | |
4062 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", | |
4063 | XCAR (path_tail)); | |
4064 | } | |
4065 | } | |
4066 | } | |
4067 | ||
11938f10 KH |
4068 | /* Record the value of load-path used at the start of dumping |
4069 | so we can see if the site changed it later during dumping. */ | |
4070 | static Lisp_Object dump_path; | |
4071 | ||
929e7845 GM |
4072 | /* Compute the default Vload_path, with the following logic: |
4073 | If CANNOT_DUMP: | |
4074 | use EMACSLOADPATH env-var if set; otherwise use PATH_LOADSEARCH, | |
4075 | prepending PATH_SITELOADSEARCH unless --no-site-lisp. | |
4076 | The remainder is what happens when dumping works: | |
4077 | If purify-flag (ie dumping) just use PATH_DUMPLOADSEARCH. | |
4078 | Otherwise use EMACSLOADPATH if set, else PATH_LOADSEARCH. | |
4079 | ||
4080 | If !initialized, then just set both Vload_path and dump_path. | |
4081 | If initialized, then if Vload_path != dump_path, do nothing. | |
4082 | (Presumably the load-path has already been changed by something. | |
4083 | This can only be from a site-load file during dumping, | |
4084 | or because EMACSLOADPATH is set.) | |
4085 | If Vinstallation_directory is not nil (ie, running uninstalled): | |
4086 | If installation-dir/lisp exists and not already a member, | |
4087 | we must be running uninstalled. Reset the load-path | |
4088 | to just installation-dir/lisp. (The default PATH_LOADSEARCH | |
4089 | refers to the eventual installation directories. Since we | |
4090 | are not yet installed, we should not use them, even if they exist.) | |
4091 | If installation-dir/lisp does not exist, just add dump_path at the | |
4092 | end instead. | |
4093 | Add installation-dir/leim (if exists and not already a member) at the front. | |
4094 | Add installation-dir/site-lisp (if !no_site_lisp, and exists | |
4095 | and not already a member) at the front. | |
4096 | If installation-dir != source-dir (ie running an uninstalled, | |
4097 | out-of-tree build) AND install-dir/src/Makefile exists BUT | |
4098 | install-dir/src/Makefile.in does NOT exist (this is a sanity | |
4099 | check), then repeat the above steps for source-dir/lisp, | |
4100 | leim and site-lisp. | |
4101 | Finally, add the site-lisp directories at the front (if !no_site_lisp). | |
4102 | */ | |
4103 | ||
d5b28a9d | 4104 | void |
971de7fb | 4105 | init_lread (void) |
078e7b4a | 4106 | { |
8ea90aa3 | 4107 | const char *normal; |
ca26824c | 4108 | |
46947372 | 4109 | #ifdef CANNOT_DUMP |
9e059e3f GM |
4110 | #ifdef HAVE_NS |
4111 | const char *loadpath = ns_load_path (); | |
4112 | #endif | |
4113 | ||
46947372 | 4114 | normal = PATH_LOADSEARCH; |
9e059e3f GM |
4115 | #ifdef HAVE_NS |
4116 | Vload_path = decode_env_path ("EMACSLOADPATH", loadpath ? loadpath : normal); | |
4117 | #else | |
929e7845 | 4118 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
9e059e3f | 4119 | #endif |
929e7845 GM |
4120 | |
4121 | load_path_check (); | |
4122 | ||
4123 | /* FIXME CANNOT_DUMP platforms should get source-dir/lisp etc added | |
4124 | to their load-path too, AFAICS. I don't think we can tell the | |
4125 | difference between initialized and !initialized in this case, | |
4126 | so we'll have to do it unconditionally when Vinstallation_directory | |
4127 | is non-nil. */ | |
4128 | if (!no_site_lisp && !egetenv ("EMACSLOADPATH")) | |
ca26824c GM |
4129 | { |
4130 | Lisp_Object sitelisp; | |
4131 | sitelisp = decode_env_path (0, PATH_SITELOADSEARCH); | |
4132 | if (! NILP (sitelisp)) Vload_path = nconc2 (sitelisp, Vload_path); | |
4133 | } | |
76151e2c | 4134 | #else /* !CANNOT_DUMP */ |
46947372 | 4135 | if (NILP (Vpurify_flag)) |
929e7845 GM |
4136 | { |
4137 | normal = PATH_LOADSEARCH; | |
4138 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4139 | This doesn't apply if we're dumping. */ | |
4140 | if (egetenv ("EMACSLOADPATH")) | |
4141 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); | |
4142 | } | |
279499f0 | 4143 | else |
46947372 | 4144 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 4145 | |
9d8d07e5 GM |
4146 | /* In a dumped Emacs, we normally reset the value of Vload_path using |
4147 | PATH_LOADSEARCH, since the value that was dumped uses lisp/ in | |
4148 | the source directory, instead of the path of the installed elisp | |
4149 | libraries. However, if it appears that Vload_path has already been | |
4150 | changed from the default that was saved before dumping, don't | |
929e7845 GM |
4151 | change it further. Changes can only be due to EMACSLOADPATH, or |
4152 | site-lisp files that were processed during dumping. */ | |
4746118a JB |
4153 | if (initialized) |
4154 | { | |
929e7845 GM |
4155 | if (NILP (Fequal (dump_path, Vload_path))) |
4156 | { | |
4157 | /* Do not make any changes, just check the elements exist. */ | |
4158 | /* Note: --no-site-lisp is ignored. | |
4159 | I don't know what to do about this. */ | |
4160 | load_path_check (); | |
4161 | } | |
4162 | else | |
80667d53 | 4163 | { |
9e059e3f GM |
4164 | #ifdef HAVE_NS |
4165 | const char *loadpath = ns_load_path (); | |
4166 | Vload_path = decode_env_path (0, loadpath ? loadpath : normal); | |
4167 | #else | |
80667d53 | 4168 | Vload_path = decode_env_path (0, normal); |
9e059e3f | 4169 | #endif |
ca26824c | 4170 | if (!NILP (Vinstallation_directory)) |
80667d53 | 4171 | { |
ca26824c GM |
4172 | Lisp_Object tem, tem1; |
4173 | ||
929e7845 GM |
4174 | /* Add to the path the lisp subdir of the installation |
4175 | dir, if it exists. Note: in out-of-tree builds, | |
4176 | this directory is empty save for Makefile. */ | |
ca26824c GM |
4177 | tem = Fexpand_file_name (build_string ("lisp"), |
4178 | Vinstallation_directory); | |
4179 | tem1 = Ffile_exists_p (tem); | |
4180 | if (!NILP (tem1)) | |
4181 | { | |
4182 | if (NILP (Fmember (tem, Vload_path))) | |
4183 | { | |
929e7845 GM |
4184 | /* We are running uninstalled. The default load-path |
4185 | points to the eventual installed lisp, leim | |
4186 | directories. We should not use those now, even | |
4187 | if they exist, so start over from a clean slate. */ | |
4188 | Vload_path = Fcons (tem, Qnil); | |
ca26824c GM |
4189 | } |
4190 | } | |
4191 | else | |
4192 | /* That dir doesn't exist, so add the build-time | |
4193 | Lisp dirs instead. */ | |
4194 | Vload_path = nconc2 (Vload_path, dump_path); | |
4195 | ||
4196 | /* Add leim under the installation dir, if it exists. */ | |
4197 | tem = Fexpand_file_name (build_string ("leim"), | |
4198 | Vinstallation_directory); | |
4199 | tem1 = Ffile_exists_p (tem); | |
4200 | if (!NILP (tem1)) | |
4201 | { | |
4202 | if (NILP (Fmember (tem, Vload_path))) | |
4203 | Vload_path = Fcons (tem, Vload_path); | |
4204 | } | |
4205 | ||
4206 | /* Add site-lisp under the installation dir, if it exists. */ | |
4207 | if (!no_site_lisp) | |
4208 | { | |
4209 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
4210 | Vinstallation_directory); | |
4211 | tem1 = Ffile_exists_p (tem); | |
4212 | if (!NILP (tem1)) | |
4213 | { | |
4214 | if (NILP (Fmember (tem, Vload_path))) | |
4215 | Vload_path = Fcons (tem, Vload_path); | |
4216 | } | |
4217 | } | |
4218 | ||
4219 | /* If Emacs was not built in the source directory, | |
4220 | and it is run from where it was built, add to load-path | |
4221 | the lisp, leim and site-lisp dirs under that directory. */ | |
4222 | ||
4223 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4224 | { | |
4225 | Lisp_Object tem2; | |
4226 | ||
4227 | tem = Fexpand_file_name (build_string ("src/Makefile"), | |
4228 | Vinstallation_directory); | |
4229 | tem1 = Ffile_exists_p (tem); | |
4230 | ||
4231 | /* Don't be fooled if they moved the entire source tree | |
4232 | AFTER dumping Emacs. If the build directory is indeed | |
4233 | different from the source dir, src/Makefile.in and | |
4234 | src/Makefile will not be found together. */ | |
4235 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4236 | Vinstallation_directory); | |
4237 | tem2 = Ffile_exists_p (tem); | |
4238 | if (!NILP (tem1) && NILP (tem2)) | |
4239 | { | |
4240 | tem = Fexpand_file_name (build_string ("lisp"), | |
4241 | Vsource_directory); | |
4242 | ||
4243 | if (NILP (Fmember (tem, Vload_path))) | |
4244 | Vload_path = Fcons (tem, Vload_path); | |
4245 | ||
4246 | tem = Fexpand_file_name (build_string ("leim"), | |
4247 | Vsource_directory); | |
4248 | ||
4249 | if (NILP (Fmember (tem, Vload_path))) | |
4250 | Vload_path = Fcons (tem, Vload_path); | |
4251 | ||
4252 | if (!no_site_lisp) | |
4253 | { | |
4254 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
4255 | Vsource_directory); | |
4256 | ||
4257 | if (NILP (Fmember (tem, Vload_path))) | |
4258 | Vload_path = Fcons (tem, Vload_path); | |
4259 | } | |
4260 | } | |
4261 | } /* Vinstallation_directory != Vsource_directory */ | |
4262 | ||
4263 | } /* if Vinstallation_directory */ | |
4264 | ||
929e7845 GM |
4265 | /* Check before adding the site-lisp directories. |
4266 | The install should have created them, but they are not | |
4267 | required, so no need to warn if they are absent. | |
4268 | Or we might be running before installation. */ | |
4269 | load_path_check (); | |
4270 | ||
ca26824c | 4271 | /* Add the site-lisp directories at the front. */ |
ca26824c GM |
4272 | if (!no_site_lisp) |
4273 | { | |
4274 | Lisp_Object sitelisp; | |
4275 | sitelisp = decode_env_path (0, PATH_SITELOADSEARCH); | |
4276 | if (! NILP (sitelisp)) Vload_path = nconc2 (sitelisp, Vload_path); | |
4277 | } | |
4278 | } /* if dump_path == Vload_path */ | |
4746118a | 4279 | } |
9d8d07e5 | 4280 | else /* !initialized */ |
11938f10 | 4281 | { |
929e7845 GM |
4282 | /* NORMAL refers to PATH_DUMPLOADSEARCH, ie the lisp dir in the |
4283 | source directory. We used to add ../lisp (ie the lisp dir in | |
4284 | the build directory) at the front here, but that caused trouble | |
4285 | because it was copied from dump_path into Vload_path, above, | |
4286 | when Vinstallation_directory was non-nil. It should not be | |
4287 | necessary, since in out of tree builds lisp/ is empty, save | |
4288 | for Makefile. */ | |
7b396c6c | 4289 | Vload_path = decode_env_path (0, normal); |
11938f10 | 4290 | dump_path = Vload_path; |
929e7845 GM |
4291 | /* No point calling load_path_check; load-path only contains essential |
4292 | elements from the source directory at this point. They cannot | |
4293 | be missing unless something went extremely (and improbably) | |
4294 | wrong, in which case the build will fail in obvious ways. */ | |
11938f10 | 4295 | } |
76151e2c | 4296 | #endif /* !CANNOT_DUMP */ |
279499f0 | 4297 | |
279499f0 JB |
4298 | Vvalues = Qnil; |
4299 | ||
078e7b4a | 4300 | load_in_progress = 0; |
4e53f562 | 4301 | Vload_file_name = Qnil; |
d2c6be7f RS |
4302 | |
4303 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4304 | |
4305 | Vstandard_input = Qt; | |
f74b0705 | 4306 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4307 | } |
4308 | ||
85496b8c | 4309 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4310 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4311 | |
d5b28a9d | 4312 | void |
a8fe7202 | 4313 | dir_warning (const char *format, Lisp_Object dirname) |
85496b8c | 4314 | { |
d5db4077 | 4315 | fprintf (stderr, format, SDATA (dirname)); |
0df02bf3 | 4316 | |
48def666 | 4317 | /* Don't log the warning before we've initialized!! */ |
9b69357e | 4318 | if (initialized) |
0df02bf3 | 4319 | { |
0df02bf3 | 4320 | USE_SAFE_ALLOCA; |
98c6f1e3 PE |
4321 | char *buffer = SAFE_ALLOCA (SBYTES (dirname) |
4322 | + strlen (format) - (sizeof "%s" - 1) + 1); | |
4323 | ptrdiff_t message_len = esprintf (buffer, format, SDATA (dirname)); | |
0df02bf3 PE |
4324 | message_dolog (buffer, message_len, 0, STRING_MULTIBYTE (dirname)); |
4325 | SAFE_FREE (); | |
4326 | } | |
85496b8c RS |
4327 | } |
4328 | ||
078e7b4a | 4329 | void |
971de7fb | 4330 | syms_of_lread (void) |
078e7b4a JB |
4331 | { |
4332 | defsubr (&Sread); | |
4333 | defsubr (&Sread_from_string); | |
4334 | defsubr (&Sintern); | |
4335 | defsubr (&Sintern_soft); | |
d007f5c8 | 4336 | defsubr (&Sunintern); |
971a4293 | 4337 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4338 | defsubr (&Sload); |
228d4b1c | 4339 | defsubr (&Seval_buffer); |
078e7b4a JB |
4340 | defsubr (&Seval_region); |
4341 | defsubr (&Sread_char); | |
4342 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4343 | defsubr (&Sread_event); |
078e7b4a JB |
4344 | defsubr (&Sget_file_char); |
4345 | defsubr (&Smapatoms); | |
86d00812 | 4346 | defsubr (&Slocate_file_internal); |
078e7b4a | 4347 | |
29208e82 | 4348 | DEFVAR_LISP ("obarray", Vobarray, |
5de38842 PJ |
4349 | doc: /* Symbol table for use by `intern' and `read'. |
4350 | It is a vector whose length ought to be prime for best results. | |
4351 | The vector's contents don't make sense if examined from Lisp programs; | |
4352 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a | 4353 | |
29208e82 | 4354 | DEFVAR_LISP ("values", Vvalues, |
5de38842 | 4355 | doc: /* List of values of all expressions which were read, evaluated and printed. |
513749ee SM |
4356 | Order is reverse chronological. */); |
4357 | XSYMBOL (intern ("values"))->declared_special = 0; | |
078e7b4a | 4358 | |
29208e82 | 4359 | DEFVAR_LISP ("standard-input", Vstandard_input, |
5de38842 PJ |
4360 | doc: /* Stream for read to get input from. |
4361 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4362 | Vstandard_input = Qt; |
4363 | ||
29208e82 | 4364 | DEFVAR_LISP ("read-with-symbol-positions", Vread_with_symbol_positions, |
abb13b09 CW |
4365 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. |
4366 | ||
4367 | If this variable is a buffer, then only forms read from that buffer | |
4368 | will be added to `read-symbol-positions-list'. | |
4369 | If this variable is t, then all read forms will be added. | |
4370 | The effect of all other values other than nil are not currently | |
4371 | defined, although they may be in the future. | |
4372 | ||
4373 | The positions are relative to the last call to `read' or | |
4374 | `read-from-string'. It is probably a bad idea to set this variable at | |
513749ee | 4375 | the toplevel; bind it instead. */); |
abb13b09 CW |
4376 | Vread_with_symbol_positions = Qnil; |
4377 | ||
29208e82 | 4378 | DEFVAR_LISP ("read-symbol-positions-list", Vread_symbol_positions_list, |
d6567030 | 4379 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4380 | This variable is modified during calls to `read' or |
4381 | `read-from-string', but only when `read-with-symbol-positions' is | |
4382 | non-nil. | |
4383 | ||
4384 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4385 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4386 | symbol from the position where `read' or `read-from-string' started. |
4387 | ||
4388 | Note that a symbol will appear multiple times in this list, if it was | |
4389 | read multiple times. The list is in the same order as the symbols | |
513749ee | 4390 | were read in. */); |
177c0ea7 | 4391 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4392 | |
29208e82 | 4393 | DEFVAR_LISP ("read-circle", Vread_circle, |
91f68422 CY |
4394 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); |
4395 | Vread_circle = Qt; | |
4396 | ||
29208e82 | 4397 | DEFVAR_LISP ("load-path", Vload_path, |
fb7ada5f | 4398 | doc: /* List of directories to search for files to load. |
5de38842 PJ |
4399 | Each element is a string (directory name) or nil (try default directory). |
4400 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4401 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4402 | |
29208e82 | 4403 | DEFVAR_LISP ("load-suffixes", Vload_suffixes, |
971a4293 LT |
4404 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4405 | This list should not include the empty string. | |
4406 | `load' and related functions try to append these suffixes, in order, | |
4407 | to the specified file name if a Lisp suffix is allowed or required. */); | |
2a0213a6 DA |
4408 | Vload_suffixes = Fcons (build_pure_c_string (".elc"), |
4409 | Fcons (build_pure_c_string (".el"), Qnil)); | |
29208e82 | 4410 | DEFVAR_LISP ("load-file-rep-suffixes", Vload_file_rep_suffixes, |
971a4293 LT |
4411 | doc: /* List of suffixes that indicate representations of \ |
4412 | the same file. | |
4413 | This list should normally start with the empty string. | |
4414 | ||
4415 | Enabling Auto Compression mode appends the suffixes in | |
4416 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4417 | mode removes them again. `load' and related functions use this list to | |
4418 | determine whether they should look for compressed versions of a file | |
4419 | and, if so, which suffixes they should try to append to the file name | |
4420 | in order to do so. However, if you want to customize which suffixes | |
4421 | the loading functions recognize as compression suffixes, you should | |
4422 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4423 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4424 | |
29208e82 | 4425 | DEFVAR_BOOL ("load-in-progress", load_in_progress, |
e0f24100 | 4426 | doc: /* Non-nil if inside of `load'. */); |
cd3520a4 | 4427 | DEFSYM (Qload_in_progress, "load-in-progress"); |
078e7b4a | 4428 | |
29208e82 | 4429 | DEFVAR_LISP ("after-load-alist", Vafter_load_alist, |
5de38842 | 4430 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4431 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4432 | ||
4433 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4434 | a symbol \(a feature name). | |
4435 | ||
4436 | When `load' is run and the file-name argument matches an element's | |
4437 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4438 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4439 | ||
4440 | An error in FORMS does not undo the load, but does prevent execution of | |
4441 | the rest of the FORMS. */); | |
078e7b4a JB |
4442 | Vafter_load_alist = Qnil; |
4443 | ||
29208e82 | 4444 | DEFVAR_LISP ("load-history", Vload_history, |
4801c5fa CY |
4445 | doc: /* Alist mapping loaded file names to symbols and features. |
4446 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4447 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4448 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4449 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4450 | for symbols and features not associated with any file. | |
4451 | ||
4452 | The remaining ENTRIES in the alist element describe the functions and | |
4453 | variables defined in that file, the features provided, and the | |
4454 | features required. Each entry has the form `(provide . FEATURE)', | |
4455 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
69bb1ef7 LMI |
4456 | `(defface . SYMBOL)', or `(t . SYMBOL)'. Entries like `(t . SYMBOL)' |
4457 | may precede a `(defun . FUNCTION)' entry, and means that SYMBOL was an | |
4458 | autoload before this file redefined it as a function. In addition, | |
4459 | entries may also be single symbols, which means that SYMBOL was | |
4460 | defined by `defvar' or `defconst'. | |
0fc213e9 | 4461 | |
b502a9a1 RS |
4462 | During preloading, the file name recorded is relative to the main Lisp |
4463 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4464 | Vload_history = Qnil; |
4465 | ||
29208e82 | 4466 | DEFVAR_LISP ("load-file-name", Vload_file_name, |
5de38842 | 4467 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4468 | Vload_file_name = Qnil; |
4469 | ||
29208e82 | 4470 | DEFVAR_LISP ("user-init-file", Vuser_init_file, |
5de38842 | 4471 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4472 | If the file loaded had extension `.elc', and the corresponding source file |
4473 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4474 | by functions like `custom-save-all' which edit the init file. |
4475 | While Emacs loads and evaluates the init file, value is the real name | |
4476 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4477 | Vuser_init_file = Qnil; |
4478 | ||
29208e82 | 4479 | DEFVAR_LISP ("current-load-list", Vcurrent_load_list, |
5de38842 | 4480 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4481 | Vcurrent_load_list = Qnil; |
4482 | ||
29208e82 | 4483 | DEFVAR_LISP ("load-read-function", Vload_read_function, |
5de38842 PJ |
4484 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4485 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4486 | Vload_read_function = Qnil; |
4487 | ||
29208e82 | 4488 | DEFVAR_LISP ("load-source-file-function", Vload_source_file_function, |
9b33a603 | 4489 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4490 | This function is for doing code conversion before reading the source file. |
4491 | If nil, loading is done without any code conversion. | |
4492 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4493 | FULLNAME is the full name of FILE. | |
4494 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4495 | Vload_source_file_function = Qnil; |
4496 | ||
29208e82 | 4497 | DEFVAR_BOOL ("load-force-doc-strings", load_force_doc_strings, |
5de38842 PJ |
4498 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4499 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4500 | load_force_doc_strings = 0; |
4501 | ||
29208e82 | 4502 | DEFVAR_BOOL ("load-convert-to-unibyte", load_convert_to_unibyte, |
5de38842 PJ |
4503 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4504 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4505 | and is not meant for users to change. */); | |
94e554db RS |
4506 | load_convert_to_unibyte = 0; |
4507 | ||
29208e82 | 4508 | DEFVAR_LISP ("source-directory", Vsource_directory, |
5de38842 PJ |
4509 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4510 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4511 | Vsource_directory |
4512 | = Fexpand_file_name (build_string ("../"), | |
4513 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4514 | ||
29208e82 | 4515 | DEFVAR_LISP ("preloaded-file-list", Vpreloaded_file_list, |
5de38842 | 4516 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4517 | Vpreloaded_file_list = Qnil; |
4518 | ||
29208e82 | 4519 | DEFVAR_LISP ("byte-boolean-vars", Vbyte_boolean_vars, |
5de38842 | 4520 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4521 | Vbyte_boolean_vars = Qnil; |
4522 | ||
29208e82 | 4523 | DEFVAR_BOOL ("load-dangerous-libraries", load_dangerous_libraries, |
5de38842 PJ |
4524 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4525 | Some versions of XEmacs use different byte codes than Emacs. These | |
4526 | incompatible byte codes can make Emacs crash when it tries to execute | |
4527 | them. */); | |
da84f340 GM |
4528 | load_dangerous_libraries = 0; |
4529 | ||
29208e82 | 4530 | DEFVAR_BOOL ("force-load-messages", force_load_messages, |
beb0b7f9 EZ |
4531 | doc: /* Non-nil means force printing messages when loading Lisp files. |
4532 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4533 | force_load_messages = 0; | |
4534 | ||
29208e82 | 4535 | DEFVAR_LISP ("bytecomp-version-regexp", Vbytecomp_version_regexp, |
5de38842 PJ |
4536 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4537 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4538 | from the file, and matches them against this regular expression. | |
4539 | When the regular expression matches, the file is considered to be safe | |
4540 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4541 | Vbytecomp_version_regexp |
2a0213a6 | 4542 | = build_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4543 | |
14ae4239 | 4544 | DEFSYM (Qlexical_binding, "lexical-binding"); |
8f1d2ef6 | 4545 | DEFVAR_LISP ("lexical-binding", Vlexical_binding, |
f41628b2 LMI |
4546 | doc: /* Whether to use lexical binding when evaluating code. |
4547 | Non-nil means that the code in the current buffer should be evaluated | |
4548 | with lexical binding. | |
1d698799 | 4549 | This variable is automatically set from the file variables of an |
48da7392 GM |
4550 | interpreted Lisp file read using `load'. Unlike other file local |
4551 | variables, this must be set in the first line of a file. */); | |
14ae4239 | 4552 | Vlexical_binding = Qnil; |
b9598260 SM |
4553 | Fmake_variable_buffer_local (Qlexical_binding); |
4554 | ||
29208e82 | 4555 | DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list, |
3f39f996 RS |
4556 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); |
4557 | Veval_buffer_list = Qnil; | |
4558 | ||
29208e82 | 4559 | DEFVAR_LISP ("old-style-backquotes", Vold_style_backquotes, |
5aa273b0 SM |
4560 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); |
4561 | Vold_style_backquotes = Qnil; | |
cd3520a4 | 4562 | DEFSYM (Qold_style_backquotes, "old-style-backquotes"); |
5aa273b0 | 4563 | |
a90ba1e2 KH |
4564 | /* Vsource_directory was initialized in init_lread. */ |
4565 | ||
d2c6be7f RS |
4566 | load_descriptor_list = Qnil; |
4567 | staticpro (&load_descriptor_list); | |
4568 | ||
cd3520a4 JB |
4569 | DEFSYM (Qcurrent_load_list, "current-load-list"); |
4570 | DEFSYM (Qstandard_input, "standard-input"); | |
4571 | DEFSYM (Qread_char, "read-char"); | |
4572 | DEFSYM (Qget_file_char, "get-file-char"); | |
4573 | DEFSYM (Qget_emacs_mule_file_char, "get-emacs-mule-file-char"); | |
4574 | DEFSYM (Qload_force_doc_strings, "load-force-doc-strings"); | |
4575 | ||
4576 | DEFSYM (Qbackquote, "`"); | |
4577 | DEFSYM (Qcomma, ","); | |
4578 | DEFSYM (Qcomma_at, ",@"); | |
4579 | DEFSYM (Qcomma_dot, ",."); | |
4580 | ||
4581 | DEFSYM (Qinhibit_file_name_operation, "inhibit-file-name-operation"); | |
4582 | DEFSYM (Qascii_character, "ascii-character"); | |
4583 | DEFSYM (Qfunction, "function"); | |
4584 | DEFSYM (Qload, "load"); | |
4585 | DEFSYM (Qload_file_name, "load-file-name"); | |
4586 | DEFSYM (Qeval_buffer_list, "eval-buffer-list"); | |
4587 | DEFSYM (Qfile_truename, "file-truename"); | |
4588 | DEFSYM (Qdir_ok, "dir-ok"); | |
4589 | DEFSYM (Qdo_after_load_evaluation, "do-after-load-evaluation"); | |
6bb6da3e | 4590 | |
11938f10 | 4591 | staticpro (&dump_path); |
4ad679f9 EN |
4592 | |
4593 | staticpro (&read_objects); | |
4594 | read_objects = Qnil; | |
9e062b6c | 4595 | staticpro (&seen_list); |
f153db13 | 4596 | seen_list = Qnil; |
177c0ea7 | 4597 | |
7ee3bd7b GM |
4598 | Vloads_in_progress = Qnil; |
4599 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4600 | |
cd3520a4 JB |
4601 | DEFSYM (Qhash_table, "hash-table"); |
4602 | DEFSYM (Qdata, "data"); | |
4603 | DEFSYM (Qtest, "test"); | |
4604 | DEFSYM (Qsize, "size"); | |
4605 | DEFSYM (Qweakness, "weakness"); | |
4606 | DEFSYM (Qrehash_size, "rehash-size"); | |
4607 | DEFSYM (Qrehash_threshold, "rehash-threshold"); | |
078e7b4a | 4608 | } |