Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
5df4f04c | 4 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
078e7b4a | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
078e7b4a JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
078e7b4a JB |
20 | |
21 | ||
98280b76 | 22 | #include <config.h> |
078e7b4a JB |
23 | #include <stdio.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/file.h> | |
2c1b5dbe | 27 | #include <errno.h> |
b3e6f69c | 28 | #include <setjmp.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
1571601b | 32 | #include "character.h" |
fe0e03f3 | 33 | #include "charset.h" |
8792be66 | 34 | #include "coding.h" |
57bda87a | 35 | #include <epaths.h> |
078e7b4a | 36 | #include "commands.h" |
e37c0805 | 37 | #include "keyboard.h" |
428a555e | 38 | #include "frame.h" |
7bd279cd | 39 | #include "termhooks.h" |
eb191db2 | 40 | #include "coding.h" |
66cd0949 | 41 | #include "blockinput.h" |
078e7b4a | 42 | |
79051982 RS |
43 | #ifdef MSDOS |
44 | #if __DJGPP__ < 2 | |
45 | #include <unistd.h> /* to get X_OK */ | |
46 | #endif | |
47 | #include "msdos.h" | |
48 | #endif | |
49 | ||
c1a2f60a AS |
50 | #ifdef HAVE_UNISTD_H |
51 | #include <unistd.h> | |
52 | #endif | |
53 | ||
078e7b4a JB |
54 | #ifndef X_OK |
55 | #define X_OK 01 | |
56 | #endif | |
57 | ||
078e7b4a | 58 | #include <math.h> |
078e7b4a | 59 | |
c011e9a5 RS |
60 | #ifdef HAVE_SETLOCALE |
61 | #include <locale.h> | |
62 | #endif /* HAVE_SETLOCALE */ | |
63 | ||
bcdec28b DL |
64 | #ifdef HAVE_FCNTL_H |
65 | #include <fcntl.h> | |
66 | #endif | |
f7d279f0 RS |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
79cf851c | 71 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
72 | #define file_offset off_t |
73 | #define file_tell ftello | |
74 | #else | |
75 | #define file_offset long | |
76 | #define file_tell ftell | |
77 | #endif | |
78 | ||
03695ace | 79 | #ifndef USE_CRT_DLL |
2c1b5dbe | 80 | extern int errno; |
03695ace | 81 | #endif |
2c1b5dbe | 82 | |
f19a0f5b TZ |
83 | /* hash table read constants */ |
84 | Lisp_Object Qhash_table, Qdata; | |
85 | Lisp_Object Qtest, Qsize; | |
86 | Lisp_Object Qweakness; | |
87 | Lisp_Object Qrehash_size; | |
88 | Lisp_Object Qrehash_threshold; | |
89 | extern Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; | |
90 | ||
8a1f1537 | 91 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 92 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 93 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 94 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 95 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 96 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
6bb6da3e | 97 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 98 | |
8792be66 KH |
99 | /* Used instead of Qget_file_char while loading *.elc files compiled |
100 | by Emacs 21 or older. */ | |
101 | static Lisp_Object Qget_emacs_mule_file_char; | |
102 | ||
103 | static Lisp_Object Qload_force_doc_strings; | |
104 | ||
7bd279cd | 105 | extern Lisp_Object Qevent_symbol_element_mask; |
74549846 | 106 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 107 | |
e0f24100 | 108 | /* non-zero if inside `load' */ |
078e7b4a | 109 | int load_in_progress; |
2baf5e76 | 110 | static Lisp_Object Qload_in_progress; |
ece435a5 | 111 | |
1521a8fa RS |
112 | /* Directory in which the sources were found. */ |
113 | Lisp_Object Vsource_directory; | |
114 | ||
e61b9b87 | 115 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 116 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 117 | |
4116ab9f KH |
118 | /* File name of user's init file. */ |
119 | Lisp_Object Vuser_init_file; | |
120 | ||
ae321d28 RS |
121 | /* This is the user-visible association list that maps features to |
122 | lists of defs in their load files. */ | |
123 | Lisp_Object Vload_history; | |
124 | ||
20ea2964 | 125 | /* This is used to build the load history. */ |
ae321d28 RS |
126 | Lisp_Object Vcurrent_load_list; |
127 | ||
4b104c41 RS |
128 | /* List of files that were preloaded. */ |
129 | Lisp_Object Vpreloaded_file_list; | |
130 | ||
20ea2964 RS |
131 | /* Name of file actually being read by `load'. */ |
132 | Lisp_Object Vload_file_name; | |
133 | ||
84a15045 RS |
134 | /* Function to use for reading, in `load' and friends. */ |
135 | Lisp_Object Vload_read_function; | |
136 | ||
91f68422 CY |
137 | /* Non-nil means read recursive structures using #n= and #n# syntax. */ |
138 | Lisp_Object Vread_circle; | |
139 | ||
4ad679f9 EN |
140 | /* The association list of objects read with the #n=object form. |
141 | Each member of the list has the form (n . object), and is used to | |
142 | look up the object for the corresponding #n# construct. | |
143 | It must be set to nil before all top-level calls to read0. */ | |
144 | Lisp_Object read_objects; | |
145 | ||
b2a30870 RS |
146 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
147 | static int load_force_doc_strings; | |
148 | ||
94e554db RS |
149 | /* Nonzero means read should convert strings to unibyte. */ |
150 | static int load_convert_to_unibyte; | |
151 | ||
8792be66 KH |
152 | /* Nonzero means READCHAR should read bytes one by one (not character) |
153 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
154 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
155 | static int load_each_byte; | |
156 | ||
9b33a603 | 157 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
158 | compiled) instead of readevalloop. */ |
159 | Lisp_Object Vload_source_file_function; | |
160 | ||
1ffcc3b1 DL |
161 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
162 | Lisp_Object Vbyte_boolean_vars; | |
163 | ||
abb13b09 CW |
164 | /* Whether or not to add a `read-positions' property to symbols |
165 | read. */ | |
166 | Lisp_Object Vread_with_symbol_positions; | |
167 | ||
168 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
169 | Lisp_Object Vread_symbol_positions_list; | |
170 | ||
d2c6be7f RS |
171 | /* List of descriptors now open for Fload. */ |
172 | static Lisp_Object load_descriptor_list; | |
173 | ||
b2a30870 | 174 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
175 | static FILE *instream; |
176 | ||
177 | /* When nonzero, read conses in pure space */ | |
178 | static int read_pure; | |
179 | ||
b2a30870 | 180 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 181 | static int read_from_string_index; |
bed23cb2 | 182 | static int read_from_string_index_byte; |
078e7b4a | 183 | static int read_from_string_limit; |
17634846 | 184 | |
abb13b09 CW |
185 | /* Number of characters read in the current call to Fread or |
186 | Fread_from_string. */ | |
187 | static int readchar_count; | |
6f7f43d5 | 188 | |
c15cfd1f | 189 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
190 | static char *saved_doc_string; |
191 | /* Length of buffer allocated in saved_doc_string. */ | |
192 | static int saved_doc_string_size; | |
193 | /* Length of actual data in saved_doc_string. */ | |
194 | static int saved_doc_string_length; | |
195 | /* This is the file position that string came from. */ | |
68c45bf0 | 196 | static file_offset saved_doc_string_position; |
b2a30870 | 197 | |
c15cfd1f RS |
198 | /* This contains the previous string skipped with #@. |
199 | We copy it from saved_doc_string when a new string | |
200 | is put in saved_doc_string. */ | |
201 | static char *prev_saved_doc_string; | |
202 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
203 | static int prev_saved_doc_string_size; | |
204 | /* Length of actual data in prev_saved_doc_string. */ | |
205 | static int prev_saved_doc_string_length; | |
206 | /* This is the file position that string came from. */ | |
68c45bf0 | 207 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 208 | |
17634846 RS |
209 | /* Nonzero means inside a new-style backquote |
210 | with no surrounding parentheses. | |
211 | Fread initializes this to zero, so we need not specbind it | |
212 | or worry about what happens to it when there is an error. */ | |
213 | static int new_backquote_flag; | |
1d064697 | 214 | static Lisp_Object Vold_style_backquotes, Qold_style_backquotes; |
7ee3bd7b GM |
215 | |
216 | /* A list of file names for files being loaded in Fload. Used to | |
217 | check for recursive loads. */ | |
218 | ||
9942fa0c | 219 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 220 | |
550a625e GM |
221 | /* Non-zero means load dangerous compiled Lisp files. */ |
222 | ||
223 | int load_dangerous_libraries; | |
224 | ||
beb0b7f9 EZ |
225 | /* Non-zero means force printing messages when loading Lisp files. */ |
226 | ||
227 | int force_load_messages; | |
228 | ||
550a625e GM |
229 | /* A regular expression used to detect files compiled with Emacs. */ |
230 | ||
231 | static Lisp_Object Vbytecomp_version_regexp; | |
232 | ||
8792be66 KH |
233 | static int read_emacs_mule_char P_ ((int, int (*) (int, Lisp_Object), |
234 | Lisp_Object)); | |
235 | ||
11d89e5d | 236 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 237 | Lisp_Object (*) (), int, |
4c03c46d | 238 | Lisp_Object, Lisp_Object, |
550a625e GM |
239 | Lisp_Object, Lisp_Object)); |
240 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
241 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
242 | ||
336d4a9c | 243 | static void invalid_syntax P_ ((const char *, int)) NO_RETURN; |
2381d38d | 244 | static void end_of_file_error P_ (()) NO_RETURN; |
336d4a9c | 245 | |
078e7b4a | 246 | \f |
8792be66 KH |
247 | /* Functions that read one byte from the current source READCHARFUN |
248 | or unreads one byte. If the integer argument C is -1, it returns | |
249 | one read byte, or -1 when there's no more byte in the source. If C | |
250 | is 0 or positive, it unreads C, and the return value is not | |
251 | interesting. */ | |
252 | ||
253 | static int readbyte_for_lambda P_ ((int, Lisp_Object)); | |
254 | static int readbyte_from_file P_ ((int, Lisp_Object)); | |
255 | static int readbyte_from_string P_ ((int, Lisp_Object)); | |
256 | ||
078e7b4a JB |
257 | /* Handle unreading and rereading of characters. |
258 | Write READCHAR to read a character, | |
fe0e03f3 KH |
259 | UNREAD(c) to unread c to be read again. |
260 | ||
8792be66 | 261 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 262 | |
1202434b | 263 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
264 | #define UNREAD(c) unreadchar (readcharfun, c) |
265 | ||
1202434b KH |
266 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
267 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
268 | ||
8792be66 | 269 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
270 | Qlambda, or a cons, we use this to keep an unread character because |
271 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
272 | means that there's no unread character. */ |
273 | static int unread_char; | |
274 | ||
078e7b4a | 275 | static int |
1202434b | 276 | readchar (readcharfun, multibyte) |
078e7b4a | 277 | Lisp_Object readcharfun; |
1202434b | 278 | int *multibyte; |
078e7b4a JB |
279 | { |
280 | Lisp_Object tem; | |
95384e1e | 281 | register int c; |
8792be66 KH |
282 | int (*readbyte) P_ ((int, Lisp_Object)); |
283 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; | |
284 | int i, len; | |
285 | int emacs_mule_encoding = 0; | |
078e7b4a | 286 | |
1202434b KH |
287 | if (multibyte) |
288 | *multibyte = 0; | |
289 | ||
abb13b09 | 290 | readchar_count++; |
177c0ea7 | 291 | |
cfff016d | 292 | if (BUFFERP (readcharfun)) |
078e7b4a | 293 | { |
bed23cb2 | 294 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 295 | |
bed23cb2 | 296 | int pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 297 | |
bed23cb2 RS |
298 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
299 | return -1; | |
078e7b4a | 300 | |
bed23cb2 RS |
301 | if (! NILP (inbuffer->enable_multibyte_characters)) |
302 | { | |
00a9a935 | 303 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
304 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
305 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 306 | c = STRING_CHAR (p); |
1202434b KH |
307 | if (multibyte) |
308 | *multibyte = 1; | |
bed23cb2 RS |
309 | } |
310 | else | |
311 | { | |
312 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
313 | if (! ASCII_BYTE_P (c)) |
314 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 315 | pt_byte++; |
6f7f43d5 | 316 | } |
bed23cb2 | 317 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 318 | |
bed23cb2 | 319 | return c; |
078e7b4a | 320 | } |
cfff016d | 321 | if (MARKERP (readcharfun)) |
078e7b4a | 322 | { |
bed23cb2 | 323 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 324 | |
bed23cb2 | 325 | int bytepos = marker_byte_position (readcharfun); |
00a9a935 | 326 | |
bed23cb2 RS |
327 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
328 | return -1; | |
6f7f43d5 | 329 | |
bed23cb2 RS |
330 | if (! NILP (inbuffer->enable_multibyte_characters)) |
331 | { | |
00a9a935 | 332 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
333 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
334 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 335 | c = STRING_CHAR (p); |
1202434b KH |
336 | if (multibyte) |
337 | *multibyte = 1; | |
bed23cb2 RS |
338 | } |
339 | else | |
340 | { | |
341 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
342 | if (! ASCII_BYTE_P (c)) |
343 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 344 | bytepos++; |
6f7f43d5 RS |
345 | } |
346 | ||
bed23cb2 RS |
347 | XMARKER (readcharfun)->bytepos = bytepos; |
348 | XMARKER (readcharfun)->charpos++; | |
349 | ||
350 | return c; | |
078e7b4a | 351 | } |
ad0153e4 RS |
352 | |
353 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
354 | { |
355 | readbyte = readbyte_for_lambda; | |
356 | goto read_multibyte; | |
357 | } | |
ad0153e4 | 358 | |
078e7b4a | 359 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 360 | { |
8792be66 KH |
361 | readbyte = readbyte_from_file; |
362 | goto read_multibyte; | |
2c1b5dbe | 363 | } |
078e7b4a | 364 | |
cfff016d | 365 | if (STRINGP (readcharfun)) |
078e7b4a | 366 | { |
bed23cb2 | 367 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 368 | c = -1; |
1202434b KH |
369 | else if (STRING_MULTIBYTE (readcharfun)) |
370 | { | |
371 | if (multibyte) | |
372 | *multibyte = 1; | |
373 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
374 | read_from_string_index, | |
375 | read_from_string_index_byte); | |
376 | } | |
f0354c03 | 377 | else |
1202434b KH |
378 | { |
379 | c = SREF (readcharfun, read_from_string_index_byte); | |
380 | read_from_string_index++; | |
381 | read_from_string_index_byte++; | |
382 | } | |
078e7b4a JB |
383 | return c; |
384 | } | |
385 | ||
8792be66 KH |
386 | if (CONSP (readcharfun)) |
387 | { | |
388 | /* This is the case that read_vector is reading from a unibyte | |
389 | string that contains a byte sequence previously skipped | |
390 | because of #@NUMBER. The car part of readcharfun is that | |
391 | string, and the cdr part is a value of readcharfun given to | |
392 | read_vector. */ | |
393 | readbyte = readbyte_from_string; | |
394 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
395 | emacs_mule_encoding = 1; | |
396 | goto read_multibyte; | |
397 | } | |
8f924df7 | 398 | |
8792be66 KH |
399 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
400 | { | |
401 | readbyte = readbyte_from_file; | |
402 | emacs_mule_encoding = 1; | |
403 | goto read_multibyte; | |
404 | } | |
078e7b4a JB |
405 | |
406 | tem = call0 (readcharfun); | |
407 | ||
265a9e55 | 408 | if (NILP (tem)) |
078e7b4a JB |
409 | return -1; |
410 | return XINT (tem); | |
8792be66 KH |
411 | |
412 | read_multibyte: | |
413 | if (unread_char >= 0) | |
414 | { | |
415 | c = unread_char; | |
416 | unread_char = -1; | |
417 | return c; | |
418 | } | |
419 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
420 | if (c < 0 || load_each_byte) |
421 | return c; | |
422 | if (multibyte) | |
423 | *multibyte = 1; | |
424 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
425 | return c; |
426 | if (emacs_mule_encoding) | |
427 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
428 | i = 0; | |
429 | buf[i++] = c; | |
430 | len = BYTES_BY_CHAR_HEAD (c); | |
431 | while (i < len) | |
432 | { | |
433 | c = (*readbyte) (-1, readcharfun); | |
434 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
435 | { | |
436 | while (--i > 1) | |
437 | (*readbyte) (buf[i], readcharfun); | |
438 | return BYTE8_TO_CHAR (buf[0]); | |
439 | } | |
440 | buf[i++] = c; | |
441 | } | |
62a6e103 | 442 | return STRING_CHAR (buf); |
078e7b4a JB |
443 | } |
444 | ||
445 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
446 | If the stream is a user function, call it with the char as argument. */ | |
447 | ||
448 | static void | |
449 | unreadchar (readcharfun, c) | |
450 | Lisp_Object readcharfun; | |
451 | int c; | |
452 | { | |
abb13b09 | 453 | readchar_count--; |
92fddec9 KH |
454 | if (c == -1) |
455 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
456 | since readchar didn't advance it when we read it. */ | |
457 | ; | |
cfff016d | 458 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 459 | { |
bed23cb2 RS |
460 | struct buffer *b = XBUFFER (readcharfun); |
461 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 462 | |
8792be66 KH |
463 | BUF_PT (b)--; |
464 | if (! NILP (b->enable_multibyte_characters)) | |
465 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 466 | else |
8792be66 | 467 | bytepos--; |
d7760ca9 | 468 | |
8792be66 | 469 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 470 | } |
cfff016d | 471 | else if (MARKERP (readcharfun)) |
d7760ca9 | 472 | { |
bed23cb2 RS |
473 | struct buffer *b = XMARKER (readcharfun)->buffer; |
474 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 475 | |
8792be66 KH |
476 | XMARKER (readcharfun)->charpos--; |
477 | if (! NILP (b->enable_multibyte_characters)) | |
478 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 479 | else |
8792be66 | 480 | bytepos--; |
d7760ca9 | 481 | |
8792be66 | 482 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 483 | } |
cfff016d | 484 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
485 | { |
486 | read_from_string_index--; | |
487 | read_from_string_index_byte | |
488 | = string_char_to_byte (readcharfun, read_from_string_index); | |
489 | } | |
8792be66 KH |
490 | else if (CONSP (readcharfun)) |
491 | { | |
492 | unread_char = c; | |
493 | } | |
ad0153e4 | 494 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
495 | { |
496 | unread_char = c; | |
497 | } | |
498 | else if (EQ (readcharfun, Qget_file_char) | |
499 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
500 | { | |
501 | if (load_each_byte) | |
d85d3839 MB |
502 | { |
503 | BLOCK_INPUT; | |
504 | ungetc (c, instream); | |
505 | UNBLOCK_INPUT; | |
506 | } | |
8792be66 KH |
507 | else |
508 | unread_char = c; | |
509 | } | |
078e7b4a JB |
510 | else |
511 | call1 (readcharfun, make_number (c)); | |
512 | } | |
513 | ||
8792be66 KH |
514 | static int |
515 | readbyte_for_lambda (c, readcharfun) | |
516 | int c; | |
517 | Lisp_Object readcharfun; | |
518 | { | |
519 | return read_bytecode_char (c >= 0); | |
520 | } | |
521 | ||
522 | ||
523 | static int | |
524 | readbyte_from_file (c, readcharfun) | |
525 | int c; | |
526 | Lisp_Object readcharfun; | |
527 | { | |
528 | if (c >= 0) | |
529 | { | |
66cd0949 | 530 | BLOCK_INPUT; |
8792be66 | 531 | ungetc (c, instream); |
66cd0949 | 532 | UNBLOCK_INPUT; |
8792be66 KH |
533 | return 0; |
534 | } | |
535 | ||
d85d3839 | 536 | BLOCK_INPUT; |
8792be66 | 537 | c = getc (instream); |
d85d3839 | 538 | |
8792be66 | 539 | #ifdef EINTR |
d85d3839 MB |
540 | /* Interrupted reads have been observed while reading over the network */ |
541 | while (c == EOF && ferror (instream) && errno == EINTR) | |
542 | { | |
57cb2e6f | 543 | UNBLOCK_INPUT; |
d85d3839 | 544 | QUIT; |
d85d3839 | 545 | BLOCK_INPUT; |
57cb2e6f | 546 | clearerr (instream); |
d85d3839 | 547 | c = getc (instream); |
66cd0949 | 548 | } |
8792be66 | 549 | #endif |
d85d3839 | 550 | |
57cb2e6f MB |
551 | UNBLOCK_INPUT; |
552 | ||
8792be66 KH |
553 | return (c == EOF ? -1 : c); |
554 | } | |
555 | ||
556 | static int | |
557 | readbyte_from_string (c, readcharfun) | |
558 | int c; | |
559 | Lisp_Object readcharfun; | |
560 | { | |
561 | Lisp_Object string = XCAR (readcharfun); | |
562 | ||
563 | if (c >= 0) | |
564 | { | |
565 | read_from_string_index--; | |
566 | read_from_string_index_byte | |
567 | = string_char_to_byte (string, read_from_string_index); | |
568 | } | |
8f924df7 | 569 | |
8792be66 KH |
570 | if (read_from_string_index >= read_from_string_limit) |
571 | c = -1; | |
572 | else | |
573 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
574 | read_from_string_index, | |
575 | read_from_string_index_byte); | |
576 | return c; | |
577 | } | |
578 | ||
579 | ||
580 | /* Read one non-ASCII character from INSTREAM. The character is | |
581 | encoded in `emacs-mule' and the first byte is already read in | |
582 | C. */ | |
583 | ||
584 | extern char emacs_mule_bytes[256]; | |
585 | ||
586 | static int | |
587 | read_emacs_mule_char (c, readbyte, readcharfun) | |
588 | int c; | |
589 | int (*readbyte) P_ ((int, Lisp_Object)); | |
590 | Lisp_Object readcharfun; | |
591 | { | |
592 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
593 | unsigned char buf[4]; | |
594 | int len = emacs_mule_bytes[c]; | |
595 | struct charset *charset; | |
596 | int i; | |
597 | unsigned code; | |
598 | ||
599 | if (len == 1) | |
600 | /* C is not a valid leading-code of `emacs-mule'. */ | |
601 | return BYTE8_TO_CHAR (c); | |
602 | ||
603 | i = 0; | |
604 | buf[i++] = c; | |
605 | while (i < len) | |
606 | { | |
607 | c = (*readbyte) (-1, readcharfun); | |
608 | if (c < 0xA0) | |
609 | { | |
610 | while (--i > 1) | |
611 | (*readbyte) (buf[i], readcharfun); | |
612 | return BYTE8_TO_CHAR (buf[0]); | |
613 | } | |
614 | buf[i++] = c; | |
615 | } | |
616 | ||
617 | if (len == 2) | |
618 | { | |
b84ae584 | 619 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
620 | code = buf[1] & 0x7F; |
621 | } | |
622 | else if (len == 3) | |
623 | { | |
624 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
625 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
626 | { | |
b84ae584 | 627 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8792be66 KH |
628 | code = buf[2] & 0x7F; |
629 | } | |
630 | else | |
631 | { | |
b84ae584 | 632 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
633 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; |
634 | } | |
635 | } | |
636 | else | |
637 | { | |
b84ae584 | 638 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8f924df7 | 639 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
640 | } |
641 | c = DECODE_CHAR (charset, code); | |
642 | if (c < 0) | |
643 | Fsignal (Qinvalid_read_syntax, | |
644 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
645 | return c; | |
646 | } | |
647 | ||
648 | ||
abb13b09 CW |
649 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
650 | Lisp_Object)); | |
651 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 652 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
653 | |
654 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
655 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
abb13b09 CW |
656 | |
657 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
658 | Lisp_Object)); | |
659 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
660 | Lisp_Object)); | |
661 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 662 | |
078e7b4a | 663 | \f |
bed23cb2 | 664 | /* Get a character from the tty. */ |
078e7b4a | 665 | |
f42be754 JB |
666 | /* Read input events until we get one that's acceptable for our purposes. |
667 | ||
668 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
669 | until we get a character we like, and then stuffed into | |
670 | unread_switch_frame. | |
671 | ||
672 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
673 | if the unmodified version of the symbol has a Qascii_character | |
674 | property, and use that character, if present. | |
675 | ||
676 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
677 | get isn't an ASCII character with modifiers. If it's zero but | |
678 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
679 | character. |
680 | ||
681 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
682 | if the character warrants that. |
683 | ||
684 | If SECONDS is a number, we wait that many seconds for input, and | |
685 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 686 | |
f42be754 | 687 | Lisp_Object |
bb49a192 | 688 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
50e48299 | 689 | input_method, seconds) |
bb49a192 | 690 | int no_switch_frame, ascii_required, error_nonascii, input_method; |
50e48299 | 691 | Lisp_Object seconds; |
f42be754 | 692 | { |
4332cf50 | 693 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 694 | EMACS_TIME end_time; |
153a17b7 | 695 | |
5dbf89bc | 696 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
697 | if (display_hourglass_p) |
698 | cancel_hourglass (); | |
5dbf89bc | 699 | #endif |
177c0ea7 | 700 | |
153a17b7 | 701 | delayed_switch_frame = Qnil; |
f42be754 | 702 | |
50e48299 CY |
703 | /* Compute timeout. */ |
704 | if (NUMBERP (seconds)) | |
705 | { | |
706 | EMACS_TIME wait_time; | |
707 | int sec, usec; | |
51d8b30e | 708 | double duration = extract_float (seconds); |
50e48299 CY |
709 | |
710 | sec = (int) duration; | |
711 | usec = (duration - sec) * 1000000; | |
712 | EMACS_GET_TIME (end_time); | |
713 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
714 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
715 | } | |
716 | ||
251bc578 | 717 | /* Read until we get an acceptable event. */ |
f42be754 | 718 | retry: |
88852d45 | 719 | do |
251bc578 KL |
720 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
721 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 722 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 723 | |
cfff016d | 724 | if (BUFFERP (val)) |
6c82d689 KH |
725 | goto retry; |
726 | ||
f42be754 | 727 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 728 | character. This is better than signaling an error just because |
f42be754 JB |
729 | the last characters were typed to a separate minibuffer frame, |
730 | for example. Eventually, some code which can deal with | |
731 | switch-frame events will read it and process it. */ | |
732 | if (no_switch_frame | |
733 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 734 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
735 | { |
736 | delayed_switch_frame = val; | |
737 | goto retry; | |
738 | } | |
739 | ||
50e48299 | 740 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
741 | { |
742 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 743 | if (SYMBOLP (val)) |
f42be754 | 744 | { |
95384e1e | 745 | Lisp_Object tem, tem1; |
f42be754 JB |
746 | tem = Fget (val, Qevent_symbol_element_mask); |
747 | if (!NILP (tem)) | |
748 | { | |
749 | tem1 = Fget (Fcar (tem), Qascii_character); | |
750 | /* Merge this symbol's modifier bits | |
751 | with the ASCII equivalent of its basic code. */ | |
752 | if (!NILP (tem1)) | |
baf69866 | 753 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
754 | } |
755 | } | |
177c0ea7 | 756 | |
f42be754 | 757 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 758 | if (!INTEGERP (val)) |
f42be754 JB |
759 | { |
760 | if (error_nonascii) | |
761 | { | |
1ec84625 | 762 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
763 | error ("Non-character input-event"); |
764 | } | |
765 | else | |
766 | goto retry; | |
767 | } | |
768 | } | |
769 | ||
770 | if (! NILP (delayed_switch_frame)) | |
771 | unread_switch_frame = delayed_switch_frame; | |
772 | ||
67868d27 PJ |
773 | #if 0 |
774 | ||
5dbf89bc | 775 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
776 | if (display_hourglass_p) |
777 | start_hourglass (); | |
5dbf89bc | 778 | #endif |
67868d27 PJ |
779 | |
780 | #endif | |
781 | ||
f42be754 | 782 | return val; |
f42be754 JB |
783 | } |
784 | ||
50e48299 | 785 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
786 | doc: /* Read a character from the command input (keyboard or macro). |
787 | It is returned as a number. | |
fb26c2af KH |
788 | If the character has modifiers, they are resolved and reflected to the |
789 | character code if possible (e.g. C-SPC -> 0). | |
790 | ||
5de38842 PJ |
791 | If the user generates an event which is not a character (i.e. a mouse |
792 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
793 | exception, switch-frame events are put off until non-character events |
794 | can be read. | |
5de38842 PJ |
795 | If you want to read non-character events, or ignore them, call |
796 | `read-event' or `read-char-exclusive' instead. | |
797 | ||
798 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
799 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
800 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
801 | is used for reading a character. |
802 | If the optional argument SECONDS is non-nil, it should be a number | |
803 | specifying the maximum number of seconds to wait for input. If no | |
804 | input arrives in that time, return nil. SECONDS may be a | |
805 | floating-point value. */) | |
806 | (prompt, inherit_input_method, seconds) | |
807 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 808 | { |
fb26c2af | 809 | Lisp_Object val; |
fb26c2af | 810 | |
bb49a192 RS |
811 | if (! NILP (prompt)) |
812 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 813 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
814 | |
815 | return (NILP (val) ? Qnil | |
816 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
817 | } |
818 | ||
50e48299 | 819 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
820 | doc: /* Read an event object from the input stream. |
821 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
822 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
823 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
824 | is used for reading a character. |
825 | If the optional argument SECONDS is non-nil, it should be a number | |
826 | specifying the maximum number of seconds to wait for input. If no | |
827 | input arrives in that time, return nil. SECONDS may be a | |
828 | floating-point value. */) | |
829 | (prompt, inherit_input_method, seconds) | |
830 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 831 | { |
bb49a192 RS |
832 | if (! NILP (prompt)) |
833 | message_with_string ("%s", prompt, 0); | |
50e48299 | 834 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
835 | } |
836 | ||
50e48299 | 837 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
838 | doc: /* Read a character from the command input (keyboard or macro). |
839 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
840 | If the character has modifiers, they are resolved and reflected to the |
841 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
842 | |
843 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
844 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
845 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
846 | is used for reading a character. |
847 | If the optional argument SECONDS is non-nil, it should be a number | |
848 | specifying the maximum number of seconds to wait for input. If no | |
849 | input arrives in that time, return nil. SECONDS may be a | |
850 | floating-point value. */) | |
851 | (prompt, inherit_input_method, seconds) | |
852 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 853 | { |
fb26c2af | 854 | Lisp_Object val; |
fb26c2af | 855 | |
bb49a192 RS |
856 | if (! NILP (prompt)) |
857 | message_with_string ("%s", prompt, 0); | |
66c410ce | 858 | |
fb26c2af | 859 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
860 | |
861 | return (NILP (val) ? Qnil | |
862 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 863 | } |
078e7b4a JB |
864 | |
865 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
866 | doc: /* Don't use this yourself. */) |
867 | () | |
078e7b4a JB |
868 | { |
869 | register Lisp_Object val; | |
66cd0949 | 870 | BLOCK_INPUT; |
1805de4f | 871 | XSETINT (val, getc (instream)); |
66cd0949 | 872 | UNBLOCK_INPUT; |
078e7b4a JB |
873 | return val; |
874 | } | |
da84f340 GM |
875 | |
876 | ||
550a625e | 877 | \f |
8792be66 | 878 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 879 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
880 | safe to load. Only files compiled with Emacs are safe to load. |
881 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
882 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
883 | |
884 | static int | |
885 | safe_to_load_p (fd) | |
886 | int fd; | |
887 | { | |
888 | char buf[512]; | |
889 | int nbytes, i; | |
890 | int safe_p = 1; | |
8f924df7 | 891 | int version = 1; |
da84f340 GM |
892 | |
893 | /* Read the first few bytes from the file, and look for a line | |
894 | specifying the byte compiler version used. */ | |
895 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
896 | if (nbytes > 0) | |
897 | { | |
898 | buf[nbytes] = '\0'; | |
899 | ||
900 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 901 | with NUL bytes following it, but note the version. */ |
da84f340 | 902 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 903 | if (i == 4) |
8792be66 | 904 | version = buf[i]; |
da84f340 | 905 | |
927f12da KH |
906 | if (i == nbytes |
907 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
908 | buf + i) < 0) |
909 | safe_p = 0; | |
910 | } | |
1da3b9e4 DL |
911 | if (safe_p) |
912 | safe_p = version; | |
da84f340 GM |
913 | |
914 | lseek (fd, 0, SEEK_SET); | |
915 | return safe_p; | |
916 | } | |
917 | ||
918 | ||
7ee3bd7b GM |
919 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
920 | after loading a file successfully. */ | |
921 | ||
922 | static Lisp_Object | |
923 | record_load_unwind (old) | |
924 | Lisp_Object old; | |
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 | |
932 | load_error_handler (data) | |
933 | Lisp_Object data; | |
934 | { | |
935 | return Qnil; | |
936 | } | |
7ee3bd7b | 937 | |
1d064697 SM |
938 | static Lisp_Object |
939 | load_warn_old_style_backquotes (file) | |
940 | Lisp_Object file; | |
941 | { | |
942 | if (!NILP (Vold_style_backquotes)) | |
943 | { | |
b636b4c1 | 944 | Lisp_Object args[2]; |
18a4a65e | 945 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
946 | args[1] = file; |
947 | Fmessage (2, args); | |
948 | } | |
949 | return Qnil; | |
950 | } | |
951 | ||
971a4293 LT |
952 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
953 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
954 | required. | |
955 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
956 | () | |
957 | { | |
958 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
959 | while (CONSP (suffixes)) | |
960 | { | |
961 | Lisp_Object exts = Vload_file_rep_suffixes; | |
962 | suffix = XCAR (suffixes); | |
963 | suffixes = XCDR (suffixes); | |
964 | while (CONSP (exts)) | |
965 | { | |
966 | ext = XCAR (exts); | |
967 | exts = XCDR (exts); | |
968 | lst = Fcons (concat2 (suffix, ext), lst); | |
969 | } | |
970 | } | |
971 | return Fnreverse (lst); | |
972 | } | |
973 | ||
f0a50954 | 974 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
975 | doc: /* Execute a file of Lisp code named FILE. |
976 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 977 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 978 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 979 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 980 | This function searches the directories in `load-path'. |
971a4293 | 981 | |
5de38842 | 982 | If optional second arg NOERROR is non-nil, |
971a4293 | 983 | report no error if FILE doesn't exist. |
5de38842 | 984 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
985 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
986 | overrides that). | |
5de38842 | 987 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 988 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 989 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
990 | the suffix `.elc' or `.el'; don't accept just FILE unless |
991 | it ends in one of those suffixes or includes a directory name. | |
992 | ||
993 | If this function fails to find a file, it may look for different | |
994 | representations of that file before trying another file. | |
995 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
996 | to the file name. Emacs uses this feature mainly to find compressed | |
997 | versions of files when Auto Compression mode is enabled. | |
998 | ||
999 | The exact suffixes that this function tries out, in the exact order, | |
1000 | are given by the value of the variable `load-file-rep-suffixes' if | |
1001 | NOSUFFIX is non-nil and by the return value of the function | |
1002 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
1003 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
1004 | and then the former. | |
0fc213e9 RS |
1005 | |
1006 | Loading a file records its definitions, and its `provide' and | |
1007 | `require' calls, in an element of `load-history' whose | |
1008 | car is the file name loaded. See `load-history'. | |
1009 | ||
c7926fe2 EZ |
1010 | While the file is in the process of being loaded, the variable |
1011 | `load-in-progress' is non-nil and the variable `load-file-name' | |
1012 | is bound to the file's name. | |
1013 | ||
971a4293 | 1014 | Return t if the file exists and loads successfully. */) |
5de38842 | 1015 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 1016 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
1017 | { |
1018 | register FILE *stream; | |
1019 | register int fd = -1; | |
aed13378 | 1020 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
1021 | struct gcpro gcpro1, gcpro2, gcpro3; |
1022 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
1023 | /* 1 means we printed the ".el is newer" message. */ |
1024 | int newer = 0; | |
1025 | /* 1 means we are loading a compiled file. */ | |
1026 | int compiled = 0; | |
c2225d00 | 1027 | Lisp_Object handler; |
456c67a4 | 1028 | int safe_p = 1; |
229ba775 | 1029 | char *fmode = "r"; |
6bb6da3e | 1030 | Lisp_Object tmp[2]; |
8792be66 KH |
1031 | int version; |
1032 | ||
317073d5 | 1033 | #ifdef DOS_NT |
229ba775 | 1034 | fmode = "rt"; |
317073d5 | 1035 | #endif /* DOS_NT */ |
078e7b4a | 1036 | |
b7826503 | 1037 | CHECK_STRING (file); |
078e7b4a | 1038 | |
c2225d00 | 1039 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1040 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1041 | handler = Ffind_file_name_handler (file, Qload); | |
1042 | if (!NILP (handler)) | |
1043 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1044 | |
07a0bda3 RS |
1045 | /* Do this after the handler to avoid |
1046 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1047 | (Below here, we care only whether they are nil or not.) |
1048 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1049 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1050 | everywhere, it accidentally stayed here. Since then, enough people |
1051 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1052 | that it seemed risky to remove. */ | |
164c8bfe RS |
1053 | if (! NILP (noerror)) |
1054 | { | |
1055 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1056 | Qt, load_error_handler); | |
1057 | if (NILP (file)) | |
1058 | return Qnil; | |
1059 | } | |
1060 | else | |
1061 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1062 | |
07a0bda3 | 1063 | |
078e7b4a JB |
1064 | /* Avoid weird lossage with null string as arg, |
1065 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 1066 | if (SCHARS (file) > 0) |
078e7b4a | 1067 | { |
d5db4077 | 1068 | int size = SBYTES (file); |
211f7dcd | 1069 | |
0fc213e9 RS |
1070 | found = Qnil; |
1071 | GCPRO2 (file, found); | |
211f7dcd RS |
1072 | |
1073 | if (! NILP (must_suffix)) | |
1074 | { | |
1075 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1076 | if (size > 3 | |
d5db4077 | 1077 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1078 | must_suffix = Qnil; |
1079 | else if (size > 4 | |
d5db4077 | 1080 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1081 | must_suffix = Qnil; |
1082 | /* Don't insist on adding a suffix | |
1083 | if the argument includes a directory name. */ | |
1084 | else if (! NILP (Ffile_name_directory (file))) | |
1085 | must_suffix = Qnil; | |
1086 | } | |
1087 | ||
f0a50954 | 1088 | fd = openp (Vload_path, file, |
e61b9b87 | 1089 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1090 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1091 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1092 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1093 | tmp))), |
86d00812 | 1094 | &found, Qnil); |
5a6e5452 | 1095 | UNGCPRO; |
078e7b4a JB |
1096 | } |
1097 | ||
96dc0f4e | 1098 | if (fd == -1) |
078e7b4a | 1099 | { |
265a9e55 | 1100 | if (NILP (noerror)) |
336d4a9c KS |
1101 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1102 | return Qnil; | |
078e7b4a JB |
1103 | } |
1104 | ||
ba0d1195 | 1105 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1106 | if (EQ (Qt, Vuser_init_file)) |
1107 | Vuser_init_file = found; | |
1108 | ||
96dc0f4e MB |
1109 | /* If FD is -2, that means openp found a magic file. */ |
1110 | if (fd == -2) | |
74549846 | 1111 | { |
5e24a1f7 KH |
1112 | if (NILP (Fequal (found, file))) |
1113 | /* If FOUND is a different file name from FILE, | |
1114 | find its handler even if we have already inhibited | |
1115 | the `load' operation on FILE. */ | |
1116 | handler = Ffind_file_name_handler (found, Qt); | |
1117 | else | |
1118 | handler = Ffind_file_name_handler (found, Qload); | |
1119 | if (! NILP (handler)) | |
1120 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1121 | } |
1122 | ||
550a625e GM |
1123 | /* Check if we're stuck in a recursive load cycle. |
1124 | ||
1125 | 2000-09-21: It's not possible to just check for the file loaded | |
1126 | being a member of Vloads_in_progress. This fails because of the | |
1127 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1128 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1129 | leads to a certain amount of ``normal'' recursion. |
1130 | ||
1131 | Also, just loading a file recursively is not always an error in | |
1132 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1133 | { |
1134 | int count = 0; | |
1135 | Lisp_Object tem; | |
1136 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
8fc45744 JB |
1137 | if (!NILP (Fequal (found, XCAR (tem))) && (++count > 3)) |
1138 | { | |
1139 | if (fd >= 0) | |
1140 | emacs_close (fd); | |
1141 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1142 | } | |
3ba6fd9a RS |
1143 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1144 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1145 | } | |
7ee3bd7b | 1146 | |
6bb6da3e AM |
1147 | /* Get the name for load-history. */ |
1148 | hist_file_name = (! NILP (Vpurify_flag) | |
1149 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1150 | tmp[1] = Ffile_name_nondirectory (found), | |
1151 | tmp)) | |
1152 | : found) ; | |
1153 | ||
8792be66 | 1154 | version = -1; |
1bb9a689 | 1155 | |
88852d45 | 1156 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1157 | specbind (Qold_style_backquotes, Qnil); |
1158 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1159 | ||
a1c89c0a | 1160 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
8792be66 | 1161 | ".elc", 4) |
74327f7a | 1162 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1163 | /* Load .elc files directly, but not when they are |
1164 | remote and have no handler! */ | |
078e7b4a | 1165 | { |
96dc0f4e | 1166 | if (fd != -2) |
da84f340 | 1167 | { |
96dc0f4e MB |
1168 | struct stat s1, s2; |
1169 | int result; | |
da84f340 | 1170 | |
6bb6da3e | 1171 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1172 | |
8792be66 KH |
1173 | if (version < 0 |
1174 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1175 | { |
1176 | safe_p = 0; | |
1177 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1178 | { |
1179 | if (fd >= 0) | |
1180 | emacs_close (fd); | |
1181 | error ("File `%s' was not compiled in Emacs", | |
1182 | SDATA (found)); | |
1183 | } | |
beb0b7f9 | 1184 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1185 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1186 | } | |
04fc68e7 | 1187 | |
96dc0f4e MB |
1188 | compiled = 1; |
1189 | ||
eb191db2 EZ |
1190 | efound = ENCODE_FILE (found); |
1191 | ||
26fbf20b | 1192 | #ifdef DOS_NT |
96dc0f4e | 1193 | fmode = "rb"; |
26fbf20b | 1194 | #endif /* DOS_NT */ |
d5db4077 | 1195 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 1196 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 1197 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 1198 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1199 | |
96dc0f4e MB |
1200 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1201 | { | |
1202 | /* Make the progress messages mention that source is newer. */ | |
1203 | newer = 1; | |
04fc68e7 | 1204 | |
96dc0f4e | 1205 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1206 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1207 | { |
0fc213e9 RS |
1208 | Lisp_Object msg_file; |
1209 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1210 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1211 | msg_file, 1); |
714d8c39 | 1212 | } |
96dc0f4e | 1213 | } |
0fc213e9 | 1214 | UNGCPRO; |
51ac6f83 | 1215 | } |
078e7b4a | 1216 | } |
fe0e03f3 KH |
1217 | else |
1218 | { | |
1219 | /* We are loading a source file (*.el). */ | |
1220 | if (!NILP (Vload_source_file_function)) | |
1221 | { | |
7ee3bd7b | 1222 | Lisp_Object val; |
96dc0f4e MB |
1223 | |
1224 | if (fd >= 0) | |
68c45bf0 | 1225 | emacs_close (fd); |
6bb6da3e | 1226 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1227 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1228 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1229 | return unbind_to (count, val); |
fe0e03f3 KH |
1230 | } |
1231 | } | |
078e7b4a | 1232 | |
6bb6da3e | 1233 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1234 | |
229ba775 | 1235 | #ifdef WINDOWSNT |
68c45bf0 | 1236 | emacs_close (fd); |
eb191db2 | 1237 | efound = ENCODE_FILE (found); |
d5db4077 | 1238 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
1239 | #else /* not WINDOWSNT */ |
1240 | stream = fdopen (fd, fmode); | |
1241 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1242 | if (stream == 0) |
1243 | { | |
68c45bf0 | 1244 | emacs_close (fd); |
d5db4077 | 1245 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1246 | } |
1247 | ||
4b104c41 | 1248 | if (! NILP (Vpurify_flag)) |
ca0a881a | 1249 | Vpreloaded_file_list = Fcons (Fpurecopy(file), Vpreloaded_file_list); |
4b104c41 | 1250 | |
beb0b7f9 | 1251 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1252 | { |
da84f340 GM |
1253 | if (!safe_p) |
1254 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1255 | file, 1); | |
1256 | else if (!compiled) | |
e28552a4 | 1257 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1258 | else if (newer) |
e28552a4 RS |
1259 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1260 | file, 1); | |
db5cae4b | 1261 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1262 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1263 | } |
078e7b4a | 1264 | |
c04d9e70 | 1265 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1266 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1267 | specbind (Qload_file_name, found); |
74549846 | 1268 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1269 | load_descriptor_list |
1270 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
2baf5e76 | 1271 | specbind (Qload_in_progress, Qt); |
ab2a47e1 | 1272 | if (! version || version >= 22) |
b883cdb2 | 1273 | readevalloop (Qget_file_char, stream, hist_file_name, |
6a2bd1a5 | 1274 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1275 | else |
1276 | { | |
1277 | /* We can't handle a file which was compiled with | |
1278 | byte-compile-dynamic by older version of Emacs. */ | |
1279 | specbind (Qload_force_doc_strings, Qt); | |
b883cdb2 | 1280 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, Feval, |
768d4533 | 1281 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1282 | } |
078e7b4a JB |
1283 | unbind_to (count, Qnil); |
1284 | ||
6bb6da3e | 1285 | /* Run any eval-after-load forms for this file */ |
428b13d6 | 1286 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1287 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1288 | ||
078e7b4a JB |
1289 | UNGCPRO; |
1290 | ||
97dead2d | 1291 | xfree (saved_doc_string); |
b2a30870 RS |
1292 | saved_doc_string = 0; |
1293 | saved_doc_string_size = 0; | |
1294 | ||
70fdbb46 | 1295 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1296 | prev_saved_doc_string = 0; |
1297 | prev_saved_doc_string_size = 0; | |
1298 | ||
beb0b7f9 | 1299 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1300 | { |
da84f340 GM |
1301 | if (!safe_p) |
1302 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1303 | file, 1); | |
1304 | else if (!compiled) | |
e28552a4 | 1305 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1306 | else if (newer) |
e28552a4 RS |
1307 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1308 | file, 1); | |
db5cae4b | 1309 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1310 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1311 | } |
7ee3bd7b | 1312 | |
078e7b4a JB |
1313 | return Qt; |
1314 | } | |
1315 | ||
1316 | static Lisp_Object | |
ebfe97a2 KS |
1317 | load_unwind (arg) /* used as unwind-protect function in load */ |
1318 | Lisp_Object arg; | |
078e7b4a | 1319 | { |
ebfe97a2 KS |
1320 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1321 | if (stream != NULL) | |
66cd0949 YM |
1322 | { |
1323 | BLOCK_INPUT; | |
1324 | fclose (stream); | |
1325 | UNBLOCK_INPUT; | |
1326 | } | |
078e7b4a JB |
1327 | return Qnil; |
1328 | } | |
1329 | ||
d2c6be7f RS |
1330 | static Lisp_Object |
1331 | load_descriptor_unwind (oldlist) | |
1332 | Lisp_Object oldlist; | |
1333 | { | |
1334 | load_descriptor_list = oldlist; | |
838abf56 | 1335 | return Qnil; |
d2c6be7f RS |
1336 | } |
1337 | ||
1338 | /* Close all descriptors in use for Floads. | |
1339 | This is used when starting a subprocess. */ | |
1340 | ||
1341 | void | |
1342 | close_load_descs () | |
1343 | { | |
f3849f25 | 1344 | #ifndef WINDOWSNT |
d2c6be7f | 1345 | Lisp_Object tail; |
9beb8baa | 1346 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1347 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1348 | #endif |
d2c6be7f | 1349 | } |
078e7b4a JB |
1350 | \f |
1351 | static int | |
1352 | complete_filename_p (pathname) | |
1353 | Lisp_Object pathname; | |
1354 | { | |
4b2dd274 | 1355 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1356 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1357 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1358 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1359 | } |
1360 | ||
86d00812 SM |
1361 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1362 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1363 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1364 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1365 | file name when searching. | |
1366 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1367 | PREDICATE can also be an integer to pass to the access(2) function, | |
1368 | in which case file-name-handlers are ignored. */) | |
1369 | (filename, path, suffixes, predicate) | |
1370 | Lisp_Object filename, path, suffixes, predicate; | |
1371 | { | |
1372 | Lisp_Object file; | |
1373 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1374 | if (NILP (predicate) && fd > 0) | |
1375 | close (fd); | |
1376 | return file; | |
1377 | } | |
1378 | ||
1379 | ||
078e7b4a JB |
1380 | /* Search for a file whose name is STR, looking in directories |
1381 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1382 | On success, returns a file descriptor. On failure, returns -1. |
1383 | ||
e61b9b87 | 1384 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1385 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1386 | |
86d00812 SM |
1387 | PREDICATE non-nil means don't open the files, |
1388 | just look for one that satisfies the predicate. In this case, | |
1389 | returns 1 on success. The predicate can be a lisp function or | |
1390 | an integer to pass to `access' (in which case file-name-handlers | |
1391 | are ignored). | |
078e7b4a JB |
1392 | |
1393 | If STOREPTR is nonzero, it points to a slot where the name of | |
1394 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1395 | nil is stored there on failure. |
1396 | ||
96dc0f4e | 1397 | If the file we find is remote, return -2 |
86d00812 | 1398 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1399 | |
1400 | int | |
86d00812 | 1401 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1402 | Lisp_Object path, str; |
e61b9b87 | 1403 | Lisp_Object suffixes; |
078e7b4a | 1404 | Lisp_Object *storeptr; |
86d00812 | 1405 | Lisp_Object predicate; |
078e7b4a JB |
1406 | { |
1407 | register int fd; | |
1408 | int fn_size = 100; | |
1409 | char buf[100]; | |
1410 | register char *fn = buf; | |
1411 | int absolute = 0; | |
1412 | int want_size; | |
74549846 | 1413 | Lisp_Object filename; |
078e7b4a | 1414 | struct stat st; |
eb191db2 EZ |
1415 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1416 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1417 | int max_suffix_len = 0; |
1418 | ||
6f8eafd1 SM |
1419 | CHECK_STRING (str); |
1420 | ||
e61b9b87 SM |
1421 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1422 | { | |
f5df591a | 1423 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1424 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1425 | SBYTES (XCAR (tail))); |
e61b9b87 | 1426 | } |
078e7b4a | 1427 | |
8b9d426a | 1428 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1429 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1430 | ||
078e7b4a JB |
1431 | if (storeptr) |
1432 | *storeptr = Qnil; | |
1433 | ||
1434 | if (complete_filename_p (str)) | |
1435 | absolute = 1; | |
1436 | ||
e61b9b87 | 1437 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1438 | { |
e61b9b87 | 1439 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1440 | if (!complete_filename_p (filename)) |
1441 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1442 | /* Of course, this could conceivably lose if luser sets | |
1443 | default-directory to be something non-absolute... */ | |
1444 | { | |
1445 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1446 | if (!complete_filename_p (filename)) | |
1447 | /* Give up on this path element! */ | |
1448 | continue; | |
1449 | } | |
1450 | ||
1451 | /* Calculate maximum size of any filename made from | |
1452 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1453 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1454 | if (fn_size < want_size) |
1455 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1456 | ||
078e7b4a | 1457 | /* Loop over suffixes. */ |
a74d1c97 | 1458 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1459 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1460 | { |
d5db4077 | 1461 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1462 | Lisp_Object handler; |
eb191db2 | 1463 | int exists; |
078e7b4a | 1464 | |
c49afcd7 RS |
1465 | /* Concatenate path element/specified name with the suffix. |
1466 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1467 | if (SCHARS (filename) > 2 |
1468 | && SREF (filename, 0) == '/' | |
1469 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1470 | { |
d5db4077 KR |
1471 | strncpy (fn, SDATA (filename) + 2, |
1472 | SBYTES (filename) - 2); | |
1473 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1474 | } |
1475 | else | |
1476 | { | |
d5db4077 KR |
1477 | strncpy (fn, SDATA (filename), |
1478 | SBYTES (filename)); | |
1479 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1480 | } |
1481 | ||
078e7b4a | 1482 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1483 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1484 | |
74549846 | 1485 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1486 | /* We used to only check for handlers on non-absolute file names: |
1487 | if (absolute) | |
1488 | handler = Qnil; | |
1489 | else | |
1490 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1491 | It's not clear why that was the case and it breaks things like | |
1492 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1493 | string = build_string (fn); |
4773b8ca | 1494 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1495 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1496 | { | |
1497 | if (NILP (predicate)) | |
1498 | exists = !NILP (Ffile_readable_p (string)); | |
1499 | else | |
1500 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1501 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1502 | exists = 0; |
1503 | ||
1504 | if (exists) | |
078e7b4a JB |
1505 | { |
1506 | /* We succeeded; return this descriptor and filename. */ | |
1507 | if (storeptr) | |
eb191db2 | 1508 | *storeptr = string; |
5ef2a3c0 | 1509 | UNGCPRO; |
96dc0f4e | 1510 | return -2; |
74549846 RS |
1511 | } |
1512 | } | |
1513 | else | |
1514 | { | |
4b2dd274 | 1515 | const char *pfn; |
eb191db2 EZ |
1516 | |
1517 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1518 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1519 | exists = (stat (pfn, &st) >= 0 |
1520 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1521 | if (exists) |
1522 | { | |
1523 | /* Check that we can access or open it. */ | |
86d00812 SM |
1524 | if (NATNUMP (predicate)) |
1525 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1526 | else |
eb191db2 | 1527 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1528 | |
1529 | if (fd >= 0) | |
1530 | { | |
1531 | /* We succeeded; return this descriptor and filename. */ | |
1532 | if (storeptr) | |
eb191db2 | 1533 | *storeptr = string; |
74549846 RS |
1534 | UNGCPRO; |
1535 | return fd; | |
1536 | } | |
078e7b4a JB |
1537 | } |
1538 | } | |
078e7b4a | 1539 | } |
5a6e5452 | 1540 | if (absolute) |
5ef2a3c0 | 1541 | break; |
078e7b4a JB |
1542 | } |
1543 | ||
5ef2a3c0 KH |
1544 | UNGCPRO; |
1545 | return -1; | |
078e7b4a JB |
1546 | } |
1547 | ||
1548 | \f | |
ae321d28 RS |
1549 | /* Merge the list we've accumulated of globals from the current input source |
1550 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1551 | the source has an associated file name or not. |
1552 | ||
1553 | FILENAME is the file name that we are loading from. | |
1554 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1555 | |
1556 | static void | |
b502a9a1 RS |
1557 | build_load_history (filename, entire) |
1558 | Lisp_Object filename; | |
1559 | int entire; | |
ae321d28 RS |
1560 | { |
1561 | register Lisp_Object tail, prev, newelt; | |
1562 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1563 | register int foundit = 0; |
ae321d28 RS |
1564 | |
1565 | tail = Vload_history; | |
1566 | prev = Qnil; | |
b502a9a1 | 1567 | |
86d00812 | 1568 | while (CONSP (tail)) |
ae321d28 | 1569 | { |
86d00812 | 1570 | tem = XCAR (tail); |
ae321d28 RS |
1571 | |
1572 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1573 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1574 | { |
1575 | foundit = 1; | |
1576 | ||
b502a9a1 RS |
1577 | /* If we're loading the entire file, remove old data. */ |
1578 | if (entire) | |
86d00812 | 1579 | { |
ae321d28 | 1580 | if (NILP (prev)) |
86d00812 | 1581 | Vload_history = XCDR (tail); |
ae321d28 | 1582 | else |
86d00812 | 1583 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1584 | } |
1585 | ||
1586 | /* Otherwise, cons on new symbols that are not already members. */ | |
1587 | else | |
1588 | { | |
1589 | tem2 = Vcurrent_load_list; | |
1590 | ||
1591 | while (CONSP (tem2)) | |
1592 | { | |
86d00812 | 1593 | newelt = XCAR (tem2); |
ae321d28 | 1594 | |
d642e4f9 | 1595 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1596 | Fsetcar (tail, Fcons (XCAR (tem), |
1597 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1598 | |
86d00812 | 1599 | tem2 = XCDR (tem2); |
ae321d28 RS |
1600 | QUIT; |
1601 | } | |
1602 | } | |
1603 | } | |
1604 | else | |
1605 | prev = tail; | |
86d00812 | 1606 | tail = XCDR (tail); |
ae321d28 RS |
1607 | QUIT; |
1608 | } | |
1609 | ||
b502a9a1 RS |
1610 | /* If we're loading an entire file, cons the new assoc onto the |
1611 | front of load-history, the most-recently-loaded position. Also | |
1612 | do this if we didn't find an existing member for the file. */ | |
1613 | if (entire || !foundit) | |
8a1f1537 RS |
1614 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1615 | Vload_history); | |
ae321d28 RS |
1616 | } |
1617 | ||
078e7b4a | 1618 | Lisp_Object |
232ccf27 DL |
1619 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1620 | Lisp_Object junk; | |
078e7b4a JB |
1621 | { |
1622 | read_pure = 0; | |
1623 | return Qnil; | |
1624 | } | |
1625 | ||
94e554db RS |
1626 | static Lisp_Object |
1627 | readevalloop_1 (old) | |
1628 | Lisp_Object old; | |
1629 | { | |
1630 | load_convert_to_unibyte = ! NILP (old); | |
1631 | return Qnil; | |
1632 | } | |
1633 | ||
9c97398c GM |
1634 | /* Signal an `end-of-file' error, if possible with file name |
1635 | information. */ | |
1636 | ||
1637 | static void | |
1638 | end_of_file_error () | |
1639 | { | |
9c97398c | 1640 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1641 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1642 | |
336d4a9c | 1643 | xsignal0 (Qend_of_file); |
9c97398c GM |
1644 | } |
1645 | ||
94e554db | 1646 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1647 | for this invocation. |
4c03c46d | 1648 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1649 | |
1650 | START, END specify region to read in current buffer (from eval-region). | |
1651 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1652 | |
078e7b4a | 1653 | static void |
4c03c46d KS |
1654 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1655 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1656 | Lisp_Object readcharfun; |
ae321d28 RS |
1657 | FILE *stream; |
1658 | Lisp_Object sourcename; | |
078e7b4a JB |
1659 | Lisp_Object (*evalfun) (); |
1660 | int printflag; | |
976350af | 1661 | Lisp_Object unibyte, readfun; |
4c03c46d | 1662 | Lisp_Object start, end; |
078e7b4a JB |
1663 | { |
1664 | register int c; | |
1665 | register Lisp_Object val; | |
aed13378 | 1666 | int count = SPECPDL_INDEX (); |
0a37f512 | 1667 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1668 | struct buffer *b = 0; |
f38952fe | 1669 | int continue_reading_p; |
d11db2c8 RS |
1670 | /* Nonzero if reading an entire buffer. */ |
1671 | int whole_buffer = 0; | |
1672 | /* 1 on the first time around. */ | |
1673 | int first_sexp = 1; | |
1674 | ||
1675 | if (MARKERP (readcharfun)) | |
1676 | { | |
1677 | if (NILP (start)) | |
8878319c | 1678 | start = readcharfun; |
d11db2c8 | 1679 | } |
49cf7ff4 RS |
1680 | |
1681 | if (BUFFERP (readcharfun)) | |
1682 | b = XBUFFER (readcharfun); | |
1683 | else if (MARKERP (readcharfun)) | |
1684 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1685 | |
1ed7b9ae RS |
1686 | /* We assume START is nil when input is not from a buffer. */ |
1687 | if (! NILP (start) && !b) | |
1688 | abort (); | |
1689 | ||
0a37f512 | 1690 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1691 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1692 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1693 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1694 | |
0a37f512 | 1695 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1696 | |
6bb6da3e AM |
1697 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1698 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1699 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1700 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1701 | sourcename = call1 (Qfile_truename, sourcename) ; |
1702 | ||
ae321d28 RS |
1703 | LOADHIST_ATTACH (sourcename); |
1704 | ||
f38952fe GM |
1705 | continue_reading_p = 1; |
1706 | while (continue_reading_p) | |
078e7b4a | 1707 | { |
4c03c46d KS |
1708 | int count1 = SPECPDL_INDEX (); |
1709 | ||
49cf7ff4 RS |
1710 | if (b != 0 && NILP (b->name)) |
1711 | error ("Reading from killed buffer"); | |
1712 | ||
4c03c46d KS |
1713 | if (!NILP (start)) |
1714 | { | |
721b7d9e | 1715 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1716 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1717 | set_buffer_internal (b); |
1718 | ||
1719 | /* Save point in it. */ | |
4c03c46d | 1720 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1721 | /* Save ZV in it. */ |
4c03c46d | 1722 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1723 | /* Those get unbound after we read one expression. */ |
1724 | ||
1725 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1726 | Fgoto_char (start); |
d11db2c8 RS |
1727 | if (!NILP (end)) |
1728 | Fnarrow_to_region (make_number (BEGV), end); | |
1729 | ||
1730 | /* Just for cleanliness, convert END to a marker | |
1731 | if it is an integer. */ | |
1732 | if (INTEGERP (end)) | |
1733 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1734 | } |
1735 | ||
d11db2c8 RS |
1736 | /* On the first cycle, we can easily test here |
1737 | whether we are reading the whole buffer. */ | |
1738 | if (b && first_sexp) | |
1739 | whole_buffer = (PT == BEG && ZV == Z); | |
1740 | ||
078e7b4a | 1741 | instream = stream; |
4c03c46d | 1742 | read_next: |
078e7b4a JB |
1743 | c = READCHAR; |
1744 | if (c == ';') | |
1745 | { | |
1746 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1747 | goto read_next; |
1748 | } | |
1749 | if (c < 0) | |
1750 | { | |
1751 | unbind_to (count1, Qnil); | |
1752 | break; | |
078e7b4a | 1753 | } |
6069d957 RS |
1754 | |
1755 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1756 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1757 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1758 | goto read_next; |
078e7b4a | 1759 | |
265a9e55 | 1760 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1761 | { |
1762 | record_unwind_protect (unreadpure, Qnil); | |
1763 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1764 | } |
1765 | else | |
1766 | { | |
1767 | UNREAD (c); | |
4ad679f9 | 1768 | read_objects = Qnil; |
f38952fe GM |
1769 | if (!NILP (readfun)) |
1770 | { | |
1771 | val = call1 (readfun, readcharfun); | |
1772 | ||
1773 | /* If READCHARFUN has set point to ZV, we should | |
1774 | stop reading, even if the form read sets point | |
1775 | to a different value when evaluated. */ | |
1776 | if (BUFFERP (readcharfun)) | |
1777 | { | |
1778 | struct buffer *b = XBUFFER (readcharfun); | |
1779 | if (BUF_PT (b) == BUF_ZV (b)) | |
1780 | continue_reading_p = 0; | |
1781 | } | |
1782 | } | |
976350af | 1783 | else if (! NILP (Vload_read_function)) |
84a15045 | 1784 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1785 | else |
abb13b09 | 1786 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1787 | } |
1788 | ||
4c03c46d KS |
1789 | if (!NILP (start) && continue_reading_p) |
1790 | start = Fpoint_marker (); | |
d11db2c8 RS |
1791 | |
1792 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1793 | unbind_to (count1, Qnil); |
1794 | ||
d11db2c8 | 1795 | /* Now eval what we just read. */ |
078e7b4a | 1796 | val = (*evalfun) (val); |
f38952fe | 1797 | |
078e7b4a JB |
1798 | if (printflag) |
1799 | { | |
1800 | Vvalues = Fcons (val, Vvalues); | |
1801 | if (EQ (Vstandard_output, Qt)) | |
1802 | Fprin1 (val, Qnil); | |
1803 | else | |
1804 | Fprint (val, Qnil); | |
1805 | } | |
d11db2c8 RS |
1806 | |
1807 | first_sexp = 0; | |
078e7b4a JB |
1808 | } |
1809 | ||
8878319c | 1810 | build_load_history (sourcename, |
d11db2c8 | 1811 | stream || whole_buffer); |
b502a9a1 | 1812 | |
ae321d28 RS |
1813 | UNGCPRO; |
1814 | ||
078e7b4a JB |
1815 | unbind_to (count, Qnil); |
1816 | } | |
1817 | ||
1076254d | 1818 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1819 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1820 | When called from a Lisp program (i.e., not interactively), this |
1821 | function accepts up to five optional arguments: | |
5de38842 PJ |
1822 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1823 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1824 | A value of nil means discard it; anything else is stream for print. |
1825 | FILENAME specifies the file name to use for `load-history'. | |
1826 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1827 | invocation. | |
1828 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1829 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1830 | |
1831 | This function preserves the position of point. */) | |
1832 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1833 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1834 | { |
aed13378 | 1835 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1836 | Lisp_Object tem, buf; |
1837 | ||
9391b698 | 1838 | if (NILP (buffer)) |
228d4b1c JA |
1839 | buf = Fcurrent_buffer (); |
1840 | else | |
9391b698 | 1841 | buf = Fget_buffer (buffer); |
dfdb645c | 1842 | if (NILP (buf)) |
13febd85 | 1843 | error ("No such buffer"); |
228d4b1c | 1844 | |
1076254d | 1845 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1846 | tem = Qsymbolp; |
1847 | else | |
1848 | tem = printflag; | |
13febd85 RS |
1849 | |
1850 | if (NILP (filename)) | |
1851 | filename = XBUFFER (buf)->filename; | |
1852 | ||
3f39f996 | 1853 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1854 | specbind (Qstandard_output, tem); |
1855 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1856 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
4c03c46d KS |
1857 | readevalloop (buf, 0, filename, Feval, |
1858 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1859 | unbind_to (count, Qnil); |
228d4b1c JA |
1860 | |
1861 | return Qnil; | |
1862 | } | |
1863 | ||
976350af | 1864 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1865 | doc: /* Execute the region as Lisp code. |
1866 | When called from programs, expects two arguments, | |
1867 | giving starting and ending indices in the current buffer | |
1868 | of the text to be executed. | |
1869 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1870 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1871 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1872 | instead of `read' to read each expression. It gets one argument | |
1873 | which is the input stream for reading characters. | |
1874 | ||
1875 | This function does not move point. */) | |
1876 | (start, end, printflag, read_function) | |
976350af | 1877 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1878 | { |
aed13378 | 1879 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1880 | Lisp_Object tem, cbuf; |
1881 | ||
1882 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1883 | |
265a9e55 | 1884 | if (NILP (printflag)) |
078e7b4a JB |
1885 | tem = Qsymbolp; |
1886 | else | |
1887 | tem = printflag; | |
1888 | specbind (Qstandard_output, tem); | |
3f39f996 | 1889 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1890 | |
4c03c46d | 1891 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1892 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1893 | !NILP (printflag), Qnil, read_function, |
1894 | start, end); | |
078e7b4a JB |
1895 | |
1896 | return unbind_to (count, Qnil); | |
1897 | } | |
1898 | ||
078e7b4a JB |
1899 | \f |
1900 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1901 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1902 | If STREAM is nil, use the value of `standard-input' (which see). | |
1903 | STREAM or the value of `standard-input' may be: | |
1904 | a buffer (read from point and advance it) | |
1905 | a marker (read from where it points and advance it) | |
1906 | a function (call it with no arguments for each character, | |
1907 | call it with a char as argument to push a char back) | |
1908 | a string (takes text from string, starting at the beginning) | |
1909 | t (read text line using minibuffer and use it, or read from | |
1910 | standard input in batch mode). */) | |
1911 | (stream) | |
5be02dff | 1912 | Lisp_Object stream; |
078e7b4a | 1913 | { |
5be02dff KH |
1914 | if (NILP (stream)) |
1915 | stream = Vstandard_input; | |
1916 | if (EQ (stream, Qt)) | |
1917 | stream = Qread_char; | |
5be02dff | 1918 | if (EQ (stream, Qread_char)) |
078e7b4a | 1919 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1920 | |
abb13b09 | 1921 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1922 | } |
1923 | ||
1924 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1925 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1926 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1927 | START and END optionally delimit a substring of STRING from which to read; | |
1928 | they default to 0 and (length STRING) respectively. */) | |
1929 | (string, start, end) | |
078e7b4a JB |
1930 | Lisp_Object string, start, end; |
1931 | { | |
2530ceaf | 1932 | Lisp_Object ret; |
b7826503 | 1933 | CHECK_STRING (string); |
2530ceaf CW |
1934 | /* read_internal_start sets read_from_string_index. */ |
1935 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1936 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1937 | } |
078e7b4a | 1938 | |
abb13b09 CW |
1939 | /* Function to set up the global context we need in toplevel read |
1940 | calls. */ | |
1941 | static Lisp_Object | |
1942 | read_internal_start (stream, start, end) | |
1943 | Lisp_Object stream; | |
1944 | Lisp_Object start; /* Only used when stream is a string. */ | |
1945 | Lisp_Object end; /* Only used when stream is a string. */ | |
1946 | { | |
1947 | Lisp_Object retval; | |
078e7b4a | 1948 | |
abb13b09 | 1949 | readchar_count = 0; |
17634846 | 1950 | new_backquote_flag = 0; |
4ad679f9 | 1951 | read_objects = Qnil; |
abb13b09 CW |
1952 | if (EQ (Vread_with_symbol_positions, Qt) |
1953 | || EQ (Vread_with_symbol_positions, stream)) | |
1954 | Vread_symbol_positions_list = Qnil; | |
1955 | ||
8f924df7 KH |
1956 | if (STRINGP (stream) |
1957 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 CW |
1958 | { |
1959 | int startval, endval; | |
8f924df7 | 1960 | Lisp_Object string; |
078e7b4a | 1961 | |
8f924df7 KH |
1962 | if (STRINGP (stream)) |
1963 | string = stream; | |
1964 | else | |
1965 | string = XCAR (stream); | |
078e7b4a | 1966 | |
abb13b09 | 1967 | if (NILP (end)) |
8f924df7 | 1968 | endval = SCHARS (string); |
abb13b09 CW |
1969 | else |
1970 | { | |
1971 | CHECK_NUMBER (end); | |
1972 | endval = XINT (end); | |
8f924df7 KH |
1973 | if (endval < 0 || endval > SCHARS (string)) |
1974 | args_out_of_range (string, end); | |
abb13b09 | 1975 | } |
17634846 | 1976 | |
abb13b09 CW |
1977 | if (NILP (start)) |
1978 | startval = 0; | |
1979 | else | |
1980 | { | |
1981 | CHECK_NUMBER (start); | |
1982 | startval = XINT (start); | |
1983 | if (startval < 0 || startval > endval) | |
8f924df7 | 1984 | args_out_of_range (string, start); |
abb13b09 CW |
1985 | } |
1986 | read_from_string_index = startval; | |
8f924df7 | 1987 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
1988 | read_from_string_limit = endval; |
1989 | } | |
177c0ea7 | 1990 | |
abb13b09 CW |
1991 | retval = read0 (stream); |
1992 | if (EQ (Vread_with_symbol_positions, Qt) | |
1993 | || EQ (Vread_with_symbol_positions, stream)) | |
1994 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1995 | return retval; | |
078e7b4a JB |
1996 | } |
1997 | \f | |
336d4a9c KS |
1998 | |
1999 | /* Signal Qinvalid_read_syntax error. | |
2000 | S is error string of length N (if > 0) */ | |
2001 | ||
2002 | static void | |
2003 | invalid_syntax (s, n) | |
2004 | const char *s; | |
2005 | int n; | |
2006 | { | |
2007 | if (!n) | |
2008 | n = strlen (s); | |
2009 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
2010 | } | |
2011 | ||
2012 | ||
6428369f KH |
2013 | /* Use this for recursive reads, in contexts where internal tokens |
2014 | are not allowed. */ | |
e28552a4 | 2015 | |
078e7b4a JB |
2016 | static Lisp_Object |
2017 | read0 (readcharfun) | |
2018 | Lisp_Object readcharfun; | |
2019 | { | |
2020 | register Lisp_Object val; | |
e28552a4 | 2021 | int c; |
078e7b4a | 2022 | |
17634846 | 2023 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2024 | if (!c) |
2025 | return val; | |
078e7b4a | 2026 | |
336d4a9c KS |
2027 | xsignal1 (Qinvalid_read_syntax, |
2028 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2029 | } |
2030 | \f | |
2031 | static int read_buffer_size; | |
2032 | static char *read_buffer; | |
2033 | ||
f6f79b37 | 2034 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2035 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2036 | |
078e7b4a | 2037 | static int |
8792be66 | 2038 | read_escape (readcharfun, stringp) |
078e7b4a | 2039 | Lisp_Object readcharfun; |
e7fc914b | 2040 | int stringp; |
078e7b4a JB |
2041 | { |
2042 | register int c = READCHAR; | |
9735b9ce | 2043 | /* \u allows up to four hex digits, \U up to eight. Default to the |
fffa137c | 2044 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 2045 | int unicode_hex_count = 4; |
f6f79b37 | 2046 | |
078e7b4a JB |
2047 | switch (c) |
2048 | { | |
f3849f25 | 2049 | case -1: |
da3b886d | 2050 | end_of_file_error (); |
f3849f25 | 2051 | |
078e7b4a | 2052 | case 'a': |
265a9e55 | 2053 | return '\007'; |
078e7b4a JB |
2054 | case 'b': |
2055 | return '\b'; | |
f405a585 RS |
2056 | case 'd': |
2057 | return 0177; | |
078e7b4a JB |
2058 | case 'e': |
2059 | return 033; | |
2060 | case 'f': | |
2061 | return '\f'; | |
2062 | case 'n': | |
2063 | return '\n'; | |
2064 | case 'r': | |
2065 | return '\r'; | |
2066 | case 't': | |
2067 | return '\t'; | |
2068 | case 'v': | |
2069 | return '\v'; | |
2070 | case '\n': | |
2071 | return -1; | |
e28552a4 | 2072 | case ' ': |
e7fc914b KH |
2073 | if (stringp) |
2074 | return -1; | |
2075 | return ' '; | |
078e7b4a JB |
2076 | |
2077 | case 'M': | |
2078 | c = READCHAR; | |
2079 | if (c != '-') | |
2080 | error ("Invalid escape character syntax"); | |
2081 | c = READCHAR; | |
2082 | if (c == '\\') | |
8792be66 | 2083 | c = read_escape (readcharfun, 0); |
7bd279cd | 2084 | return c | meta_modifier; |
f405a585 RS |
2085 | |
2086 | case 'S': | |
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 RS |
2093 | return c | shift_modifier; |
2094 | ||
2095 | case 'H': | |
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 | hyper_modifier; |
2103 | ||
2104 | case 'A': | |
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 | alt_modifier; |
2112 | ||
2113 | case 's': | |
2114 | c = READCHAR; | |
4d7528d0 | 2115 | if (stringp || c != '-') |
010b7eac RS |
2116 | { |
2117 | UNREAD (c); | |
2118 | return ' '; | |
2119 | } | |
7bd279cd RS |
2120 | c = READCHAR; |
2121 | if (c == '\\') | |
8792be66 | 2122 | c = read_escape (readcharfun, 0); |
7bd279cd | 2123 | return c | super_modifier; |
078e7b4a JB |
2124 | |
2125 | case 'C': | |
2126 | c = READCHAR; | |
2127 | if (c != '-') | |
2128 | error ("Invalid escape character syntax"); | |
2129 | case '^': | |
2130 | c = READCHAR; | |
2131 | if (c == '\\') | |
8792be66 | 2132 | c = read_escape (readcharfun, 0); |
164d590d KH |
2133 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2134 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2135 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2136 | return c | ctrl_modifier; | |
f405a585 RS |
2137 | /* ASCII control chars are made from letters (both cases), |
2138 | as well as the non-letters within 0100...0137. */ | |
2139 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2140 | return (c & (037 | ~0177)); | |
2141 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2142 | return (c & (037 | ~0177)); | |
078e7b4a | 2143 | else |
7bd279cd | 2144 | return c | ctrl_modifier; |
078e7b4a JB |
2145 | |
2146 | case '0': | |
2147 | case '1': | |
2148 | case '2': | |
2149 | case '3': | |
2150 | case '4': | |
2151 | case '5': | |
2152 | case '6': | |
2153 | case '7': | |
2154 | /* An octal escape, as in ANSI C. */ | |
2155 | { | |
2156 | register int i = c - '0'; | |
2157 | register int count = 0; | |
2158 | while (++count < 3) | |
2159 | { | |
2160 | if ((c = READCHAR) >= '0' && c <= '7') | |
2161 | { | |
2162 | i *= 8; | |
2163 | i += c - '0'; | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | UNREAD (c); | |
2168 | break; | |
2169 | } | |
2170 | } | |
177c0ea7 | 2171 | |
8f924df7 | 2172 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2173 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2174 | return i; |
2175 | } | |
2176 | ||
2177 | case 'x': | |
2178 | /* A hex escape, as in ANSI C. */ | |
2179 | { | |
2180 | int i = 0; | |
1571601b | 2181 | int count = 0; |
078e7b4a JB |
2182 | while (1) |
2183 | { | |
2184 | c = READCHAR; | |
2185 | if (c >= '0' && c <= '9') | |
2186 | { | |
2187 | i *= 16; | |
2188 | i += c - '0'; | |
2189 | } | |
2190 | else if ((c >= 'a' && c <= 'f') | |
2191 | || (c >= 'A' && c <= 'F')) | |
2192 | { | |
2193 | i *= 16; | |
2194 | if (c >= 'a' && c <= 'f') | |
2195 | i += c - 'a' + 10; | |
2196 | else | |
2197 | i += c - 'A' + 10; | |
2198 | } | |
2199 | else | |
2200 | { | |
2201 | UNREAD (c); | |
2202 | break; | |
2203 | } | |
1571601b | 2204 | count++; |
078e7b4a | 2205 | } |
f6f79b37 | 2206 | |
1571601b | 2207 | if (count < 3 && i >= 0x80) |
8792be66 | 2208 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2209 | return i; |
2210 | } | |
2211 | ||
71b169b8 EZ |
2212 | case 'U': |
2213 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2214 | unicode_hex_count = 8; | |
2215 | case 'u': | |
2216 | ||
9735b9ce | 2217 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2218 | not arbitrarily in the source code, as in some other languages. */ |
2219 | { | |
a808f22d | 2220 | unsigned int i = 0; |
71b169b8 | 2221 | int count = 0; |
71b169b8 EZ |
2222 | |
2223 | while (++count <= unicode_hex_count) | |
2224 | { | |
2225 | c = READCHAR; | |
a3ac22e4 | 2226 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2227 | want. */ |
2228 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2229 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2230 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2231 | else | |
2232 | { | |
2233 | error ("Non-hex digit used for Unicode escape"); | |
2234 | break; | |
2235 | } | |
2236 | } | |
a808f22d KH |
2237 | if (i > 0x10FFFF) |
2238 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2239 | return i; |
71b169b8 EZ |
2240 | } |
2241 | ||
078e7b4a JB |
2242 | default: |
2243 | return c; | |
2244 | } | |
2245 | } | |
2246 | ||
bf5d1a17 GM |
2247 | /* Read an integer in radix RADIX using READCHARFUN to read |
2248 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2249 | read error is signaled . Value is the integer read. Signals an | |
2250 | error if encountering invalid read syntax or if RADIX is out of | |
2251 | range. */ | |
2252 | ||
2253 | static Lisp_Object | |
2254 | read_integer (readcharfun, radix) | |
2255 | Lisp_Object readcharfun; | |
2256 | int radix; | |
2257 | { | |
5e37dc22 | 2258 | int ndigits = 0, invalid_p, c, sign = 0; |
155a6764 SM |
2259 | /* We use a floating point number because */ |
2260 | double number = 0; | |
bf5d1a17 GM |
2261 | |
2262 | if (radix < 2 || radix > 36) | |
2263 | invalid_p = 1; | |
2264 | else | |
2265 | { | |
2266 | number = ndigits = invalid_p = 0; | |
2267 | sign = 1; | |
2268 | ||
2269 | c = READCHAR; | |
2270 | if (c == '-') | |
2271 | { | |
2272 | c = READCHAR; | |
2273 | sign = -1; | |
2274 | } | |
2275 | else if (c == '+') | |
2276 | c = READCHAR; | |
177c0ea7 | 2277 | |
bf5d1a17 GM |
2278 | while (c >= 0) |
2279 | { | |
2280 | int digit; | |
177c0ea7 | 2281 | |
bf5d1a17 GM |
2282 | if (c >= '0' && c <= '9') |
2283 | digit = c - '0'; | |
2284 | else if (c >= 'a' && c <= 'z') | |
2285 | digit = c - 'a' + 10; | |
2286 | else if (c >= 'A' && c <= 'Z') | |
2287 | digit = c - 'A' + 10; | |
2288 | else | |
b632fa48 GM |
2289 | { |
2290 | UNREAD (c); | |
2291 | break; | |
2292 | } | |
bf5d1a17 GM |
2293 | |
2294 | if (digit < 0 || digit >= radix) | |
2295 | invalid_p = 1; | |
2296 | ||
2297 | number = radix * number + digit; | |
2298 | ++ndigits; | |
2299 | c = READCHAR; | |
2300 | } | |
2301 | } | |
2302 | ||
2303 | if (ndigits == 0 || invalid_p) | |
2304 | { | |
2305 | char buf[50]; | |
2306 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2307 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2308 | } |
2309 | ||
155a6764 | 2310 | return make_fixnum_or_float (sign * number); |
bf5d1a17 GM |
2311 | } |
2312 | ||
2313 | ||
6428369f KH |
2314 | /* If the next token is ')' or ']' or '.', we store that character |
2315 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2316 | zero in *PCH and we read and return one lisp object. |
2317 | ||
2318 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2319 | ||
078e7b4a | 2320 | static Lisp_Object |
17634846 | 2321 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 2322 | register Lisp_Object readcharfun; |
e28552a4 | 2323 | int *pch; |
17634846 | 2324 | int first_in_list; |
078e7b4a JB |
2325 | { |
2326 | register int c; | |
4ad679f9 | 2327 | int uninterned_symbol = 0; |
1202434b | 2328 | int multibyte; |
4ad679f9 | 2329 | |
6428369f | 2330 | *pch = 0; |
8792be66 | 2331 | load_each_byte = 0; |
078e7b4a JB |
2332 | |
2333 | retry: | |
2334 | ||
1202434b | 2335 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2336 | if (c < 0) |
2337 | end_of_file_error (); | |
078e7b4a JB |
2338 | |
2339 | switch (c) | |
2340 | { | |
2341 | case '(': | |
2342 | return read_list (0, readcharfun); | |
2343 | ||
2344 | case '[': | |
c15cfd1f | 2345 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2346 | |
2347 | case ')': | |
2348 | case ']': | |
078e7b4a | 2349 | { |
6428369f KH |
2350 | *pch = c; |
2351 | return Qnil; | |
078e7b4a JB |
2352 | } |
2353 | ||
2354 | case '#': | |
200f684e | 2355 | c = READCHAR; |
f19a0f5b TZ |
2356 | if (c == 's') |
2357 | { | |
2358 | c = READCHAR; | |
2359 | if (c == '(') | |
2360 | { | |
2361 | /* Accept extended format for hashtables (extensible to | |
2362 | other types), e.g. | |
2363 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ | |
2364 | Lisp_Object tmp = read_list (0, readcharfun); | |
2365 | Lisp_Object head = CAR_SAFE (tmp); | |
2366 | Lisp_Object data = Qnil; | |
2367 | Lisp_Object val = Qnil; | |
2368 | /* The size is 2 * number of allowed keywords to | |
2369 | make-hash-table. */ | |
9735b9ce | 2370 | Lisp_Object params[10]; |
f19a0f5b TZ |
2371 | Lisp_Object ht; |
2372 | Lisp_Object key = Qnil; | |
2373 | int param_count = 0; | |
9735b9ce | 2374 | |
f19a0f5b TZ |
2375 | if (!EQ (head, Qhash_table)) |
2376 | error ("Invalid extended read marker at head of #s list " | |
2377 | "(only hash-table allowed)"); | |
9735b9ce | 2378 | |
f19a0f5b TZ |
2379 | tmp = CDR_SAFE (tmp); |
2380 | ||
2381 | /* This is repetitive but fast and simple. */ | |
2382 | params[param_count] = QCsize; | |
2383 | params[param_count+1] = Fplist_get (tmp, Qsize); | |
5721b4ed AS |
2384 | if (!NILP (params[param_count + 1])) |
2385 | param_count += 2; | |
f19a0f5b TZ |
2386 | |
2387 | params[param_count] = QCtest; | |
2388 | params[param_count+1] = Fplist_get (tmp, Qtest); | |
5721b4ed AS |
2389 | if (!NILP (params[param_count + 1])) |
2390 | param_count += 2; | |
f19a0f5b TZ |
2391 | |
2392 | params[param_count] = QCweakness; | |
2393 | params[param_count+1] = Fplist_get (tmp, Qweakness); | |
5721b4ed AS |
2394 | if (!NILP (params[param_count + 1])) |
2395 | param_count += 2; | |
f19a0f5b TZ |
2396 | |
2397 | params[param_count] = QCrehash_size; | |
2398 | params[param_count+1] = Fplist_get (tmp, Qrehash_size); | |
5721b4ed AS |
2399 | if (!NILP (params[param_count + 1])) |
2400 | param_count += 2; | |
f19a0f5b TZ |
2401 | |
2402 | params[param_count] = QCrehash_threshold; | |
2403 | params[param_count+1] = Fplist_get (tmp, Qrehash_threshold); | |
5721b4ed AS |
2404 | if (!NILP (params[param_count + 1])) |
2405 | param_count += 2; | |
f19a0f5b TZ |
2406 | |
2407 | /* This is the hashtable data. */ | |
2408 | data = Fplist_get (tmp, Qdata); | |
2409 | ||
2410 | /* Now use params to make a new hashtable and fill it. */ | |
2411 | ht = Fmake_hash_table (param_count, params); | |
9735b9ce | 2412 | |
f19a0f5b TZ |
2413 | while (CONSP (data)) |
2414 | { | |
2415 | key = XCAR (data); | |
2416 | data = XCDR (data); | |
2417 | if (!CONSP (data)) | |
2418 | error ("Odd number of elements in hashtable data"); | |
2419 | val = XCAR (data); | |
2420 | data = XCDR (data); | |
2421 | Fputhash (key, val, ht); | |
2422 | } | |
9735b9ce | 2423 | |
f19a0f5b TZ |
2424 | return ht; |
2425 | } | |
5721b4ed AS |
2426 | UNREAD (c); |
2427 | invalid_syntax ("#", 1); | |
f19a0f5b | 2428 | } |
c2390933 RS |
2429 | if (c == '^') |
2430 | { | |
2431 | c = READCHAR; | |
2432 | if (c == '[') | |
2433 | { | |
2434 | Lisp_Object tmp; | |
c15cfd1f | 2435 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2436 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2437 | error ("Invalid size char-table"); |
985773c9 | 2438 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2439 | return tmp; |
2440 | } | |
3701b5de KH |
2441 | else if (c == '^') |
2442 | { | |
2443 | c = READCHAR; | |
2444 | if (c == '[') | |
2445 | { | |
2446 | Lisp_Object tmp; | |
1571601b | 2447 | int depth, size; |
8f924df7 | 2448 | |
c15cfd1f | 2449 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2450 | if (!INTEGERP (AREF (tmp, 0))) |
2451 | error ("Invalid depth in char-table"); | |
2452 | depth = XINT (AREF (tmp, 0)); | |
2453 | if (depth < 1 || depth > 3) | |
2454 | error ("Invalid depth in char-table"); | |
41482d36 | 2455 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2456 | if (chartab_size [depth] != size) |
3701b5de | 2457 | error ("Invalid size char-table"); |
985773c9 | 2458 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2459 | return tmp; |
2460 | } | |
336d4a9c | 2461 | invalid_syntax ("#^^", 3); |
3701b5de | 2462 | } |
336d4a9c | 2463 | invalid_syntax ("#^", 2); |
c2390933 RS |
2464 | } |
2465 | if (c == '&') | |
2466 | { | |
2467 | Lisp_Object length; | |
2468 | length = read1 (readcharfun, pch, first_in_list); | |
2469 | c = READCHAR; | |
2470 | if (c == '"') | |
2471 | { | |
2472 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2473 | int size_in_chars |
2474 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2475 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2476 | |
2477 | UNREAD (c); | |
2478 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2479 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2480 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2481 | /* We used to print 1 char too many |
2482 | when the number of bits was a multiple of 8. | |
2483 | Accept such input in case it came from an old | |
2484 | version. */ | |
2485 | && ! (XFASTINT (length) | |
327719ee | 2486 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2487 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2488 | |
c2390933 | 2489 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2490 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2491 | size_in_chars); |
67d3b149 | 2492 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2493 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2494 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2495 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2496 | return val; |
2497 | } | |
336d4a9c | 2498 | invalid_syntax ("#&...", 5); |
c2390933 | 2499 | } |
200f684e RS |
2500 | if (c == '[') |
2501 | { | |
2502 | /* Accept compiled functions at read-time so that we don't have to | |
2503 | build them using function calls. */ | |
748ef62f | 2504 | Lisp_Object tmp; |
c15cfd1f | 2505 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2506 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2507 | XVECTOR (tmp)->contents); | |
200f684e | 2508 | } |
748ef62f RS |
2509 | if (c == '(') |
2510 | { | |
2511 | Lisp_Object tmp; | |
2512 | struct gcpro gcpro1; | |
e28552a4 | 2513 | int ch; |
748ef62f RS |
2514 | |
2515 | /* Read the string itself. */ | |
17634846 | 2516 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2517 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2518 | invalid_syntax ("#", 1); |
748ef62f RS |
2519 | GCPRO1 (tmp); |
2520 | /* Read the intervals and their properties. */ | |
2521 | while (1) | |
2522 | { | |
2523 | Lisp_Object beg, end, plist; | |
2524 | ||
17634846 | 2525 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2526 | end = plist = Qnil; |
6428369f KH |
2527 | if (ch == ')') |
2528 | break; | |
2529 | if (ch == 0) | |
17634846 | 2530 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2531 | if (ch == 0) |
17634846 | 2532 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2533 | if (ch) |
336d4a9c | 2534 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2535 | Fset_text_properties (beg, end, plist, tmp); |
2536 | } | |
2537 | UNGCPRO; | |
2538 | return tmp; | |
2539 | } | |
177c0ea7 | 2540 | |
20ea2964 RS |
2541 | /* #@NUMBER is used to skip NUMBER following characters. |
2542 | That's used in .elc files to skip over doc strings | |
2543 | and function definitions. */ | |
2544 | if (c == '@') | |
2545 | { | |
2546 | int i, nskip = 0; | |
2547 | ||
8792be66 | 2548 | load_each_byte = 1; |
20ea2964 RS |
2549 | /* Read a decimal integer. */ |
2550 | while ((c = READCHAR) >= 0 | |
2551 | && c >= '0' && c <= '9') | |
2552 | { | |
2553 | nskip *= 10; | |
2554 | nskip += c - '0'; | |
2555 | } | |
2556 | if (c >= 0) | |
2557 | UNREAD (c); | |
177c0ea7 | 2558 | |
8792be66 KH |
2559 | if (load_force_doc_strings |
2560 | && (EQ (readcharfun, Qget_file_char) | |
2561 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2562 | { |
2563 | /* If we are supposed to force doc strings into core right now, | |
2564 | record the last string that we skipped, | |
2565 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2566 | |
2567 | /* But first exchange saved_doc_string | |
2568 | with prev_saved_doc_string, so we save two strings. */ | |
2569 | { | |
2570 | char *temp = saved_doc_string; | |
2571 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2572 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2573 | int temp_len = saved_doc_string_length; |
2574 | ||
2575 | saved_doc_string = prev_saved_doc_string; | |
2576 | saved_doc_string_size = prev_saved_doc_string_size; | |
2577 | saved_doc_string_position = prev_saved_doc_string_position; | |
2578 | saved_doc_string_length = prev_saved_doc_string_length; | |
2579 | ||
2580 | prev_saved_doc_string = temp; | |
2581 | prev_saved_doc_string_size = temp_size; | |
2582 | prev_saved_doc_string_position = temp_pos; | |
2583 | prev_saved_doc_string_length = temp_len; | |
2584 | } | |
2585 | ||
b2a30870 RS |
2586 | if (saved_doc_string_size == 0) |
2587 | { | |
2588 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2589 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2590 | } |
2591 | if (nskip > saved_doc_string_size) | |
2592 | { | |
2593 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2594 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2595 | saved_doc_string_size); | |
b2a30870 RS |
2596 | } |
2597 | ||
68c45bf0 | 2598 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2599 | |
2600 | /* Copy that many characters into saved_doc_string. */ | |
2601 | for (i = 0; i < nskip && c >= 0; i++) | |
2602 | saved_doc_string[i] = c = READCHAR; | |
2603 | ||
2604 | saved_doc_string_length = i; | |
2605 | } | |
2606 | else | |
b2a30870 RS |
2607 | { |
2608 | /* Skip that many characters. */ | |
2609 | for (i = 0; i < nskip && c >= 0; i++) | |
2610 | c = READCHAR; | |
2611 | } | |
d49f0c1a | 2612 | |
8792be66 | 2613 | load_each_byte = 0; |
20ea2964 RS |
2614 | goto retry; |
2615 | } | |
e2518d02 RS |
2616 | if (c == '!') |
2617 | { | |
2618 | /* #! appears at the beginning of an executable file. | |
2619 | Skip the first line. */ | |
225c7a07 | 2620 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2621 | c = READCHAR; |
2622 | goto retry; | |
2623 | } | |
20ea2964 RS |
2624 | if (c == '$') |
2625 | return Vload_file_name; | |
2b6cae0c RS |
2626 | if (c == '\'') |
2627 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2628 | /* #:foo is the uninterned symbol named foo. */ |
2629 | if (c == ':') | |
2630 | { | |
2631 | uninterned_symbol = 1; | |
2632 | c = READCHAR; | |
2633 | goto default_label; | |
2634 | } | |
2635 | /* Reader forms that can reuse previously read objects. */ | |
2636 | if (c >= '0' && c <= '9') | |
2637 | { | |
2638 | int n = 0; | |
2639 | Lisp_Object tem; | |
2b6cae0c | 2640 | |
4ad679f9 EN |
2641 | /* Read a non-negative integer. */ |
2642 | while (c >= '0' && c <= '9') | |
2643 | { | |
2644 | n *= 10; | |
2645 | n += c - '0'; | |
2646 | c = READCHAR; | |
2647 | } | |
2648 | /* #n=object returns object, but associates it with n for #n#. */ | |
91f68422 | 2649 | if (c == '=' && !NILP (Vread_circle)) |
4ad679f9 | 2650 | { |
9e062b6c RS |
2651 | /* Make a placeholder for #n# to use temporarily */ |
2652 | Lisp_Object placeholder; | |
2653 | Lisp_Object cell; | |
2654 | ||
9735b9ce | 2655 | placeholder = Fcons (Qnil, Qnil); |
9e062b6c RS |
2656 | cell = Fcons (make_number (n), placeholder); |
2657 | read_objects = Fcons (cell, read_objects); | |
2658 | ||
2659 | /* Read the object itself. */ | |
4ad679f9 | 2660 | tem = read0 (readcharfun); |
9e062b6c RS |
2661 | |
2662 | /* Now put it everywhere the placeholder was... */ | |
2663 | substitute_object_in_subtree (tem, placeholder); | |
2664 | ||
2665 | /* ...and #n# will use the real value from now on. */ | |
2666 | Fsetcdr (cell, tem); | |
177c0ea7 | 2667 | |
4ad679f9 EN |
2668 | return tem; |
2669 | } | |
2670 | /* #n# returns a previously read object. */ | |
91f68422 | 2671 | if (c == '#' && !NILP (Vread_circle)) |
4ad679f9 EN |
2672 | { |
2673 | tem = Fassq (make_number (n), read_objects); | |
2674 | if (CONSP (tem)) | |
2675 | return XCDR (tem); | |
2676 | /* Fall through to error message. */ | |
2677 | } | |
bf5d1a17 GM |
2678 | else if (c == 'r' || c == 'R') |
2679 | return read_integer (readcharfun, n); | |
177c0ea7 | 2680 | |
4ad679f9 EN |
2681 | /* Fall through to error message. */ |
2682 | } | |
bf5d1a17 GM |
2683 | else if (c == 'x' || c == 'X') |
2684 | return read_integer (readcharfun, 16); | |
2685 | else if (c == 'o' || c == 'O') | |
2686 | return read_integer (readcharfun, 8); | |
2687 | else if (c == 'b' || c == 'B') | |
2688 | return read_integer (readcharfun, 2); | |
20ea2964 | 2689 | |
200f684e | 2690 | UNREAD (c); |
336d4a9c | 2691 | invalid_syntax ("#", 1); |
078e7b4a JB |
2692 | |
2693 | case ';': | |
2694 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2695 | goto retry; | |
2696 | ||
2697 | case '\'': | |
2698 | { | |
2699 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2700 | } | |
2701 | ||
17634846 RS |
2702 | case '`': |
2703 | if (first_in_list) | |
9ecb827b SM |
2704 | { |
2705 | Vold_style_backquotes = Qt; | |
2706 | goto default_label; | |
2707 | } | |
17634846 RS |
2708 | else |
2709 | { | |
2710 | Lisp_Object value; | |
2711 | ||
0ffbbdeb | 2712 | new_backquote_flag++; |
17634846 | 2713 | value = read0 (readcharfun); |
0ffbbdeb | 2714 | new_backquote_flag--; |
17634846 RS |
2715 | |
2716 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2717 | } | |
2718 | ||
2719 | case ',': | |
2720 | if (new_backquote_flag) | |
2721 | { | |
2722 | Lisp_Object comma_type = Qnil; | |
2723 | Lisp_Object value; | |
2724 | int ch = READCHAR; | |
2725 | ||
2726 | if (ch == '@') | |
2727 | comma_type = Qcomma_at; | |
2728 | else if (ch == '.') | |
2729 | comma_type = Qcomma_dot; | |
2730 | else | |
2731 | { | |
2732 | if (ch >= 0) UNREAD (ch); | |
2733 | comma_type = Qcomma; | |
2734 | } | |
2735 | ||
0ffbbdeb | 2736 | new_backquote_flag--; |
17634846 | 2737 | value = read0 (readcharfun); |
0ffbbdeb | 2738 | new_backquote_flag++; |
17634846 RS |
2739 | return Fcons (comma_type, Fcons (value, Qnil)); |
2740 | } | |
2741 | else | |
9ecb827b SM |
2742 | { |
2743 | Vold_style_backquotes = Qt; | |
2744 | goto default_label; | |
2745 | } | |
17634846 | 2746 | |
078e7b4a JB |
2747 | case '?': |
2748 | { | |
8792be66 | 2749 | int modifiers; |
df9c2be7 KS |
2750 | int next_char; |
2751 | int ok; | |
f6f79b37 | 2752 | |
078e7b4a | 2753 | c = READCHAR; |
9c97398c GM |
2754 | if (c < 0) |
2755 | end_of_file_error (); | |
078e7b4a | 2756 | |
b9284371 KS |
2757 | /* Accept `single space' syntax like (list ? x) where the |
2758 | whitespace character is SPC or TAB. | |
2759 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2760 | as there are well-established escape sequences for these. */ | |
2761 | if (c == ' ' || c == '\t') | |
2762 | return make_number (c); | |
2763 | ||
078e7b4a | 2764 | if (c == '\\') |
8792be66 KH |
2765 | c = read_escape (readcharfun, 0); |
2766 | modifiers = c & CHAR_MODIFIER_MASK; | |
2767 | c &= ~CHAR_MODIFIER_MASK; | |
2768 | if (CHAR_BYTE8_P (c)) | |
2769 | c = CHAR_TO_BYTE8 (c); | |
2770 | c |= modifiers; | |
078e7b4a | 2771 | |
df9c2be7 KS |
2772 | next_char = READCHAR; |
2773 | if (next_char == '.') | |
2774 | { | |
2775 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2776 | int next_next_char = READCHAR; | |
2777 | UNREAD (next_next_char); | |
2778 | ||
2779 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2780 | || (next_next_char < 0200 |
2781 | && (index ("\"';([#?", next_next_char) | |
2782 | || (!first_in_list && next_next_char == '`') | |
2783 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2784 | } |
2785 | else | |
2786 | { | |
2787 | ok = (next_char <= 040 | |
e613ea97 KH |
2788 | || (next_char < 0200 |
2789 | && (index ("\"';()[]#?", next_char) | |
2790 | || (!first_in_list && next_char == '`') | |
2791 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2792 | } |
2793 | UNREAD (next_char); | |
336d4a9c KS |
2794 | if (ok) |
2795 | return make_number (c); | |
37cd4238 | 2796 | |
336d4a9c | 2797 | invalid_syntax ("?", 1); |
078e7b4a JB |
2798 | } |
2799 | ||
00a9a935 | 2800 | case '"': |
078e7b4a | 2801 | { |
a742d646 GM |
2802 | char *p = read_buffer; |
2803 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2804 | register int c; |
1571601b KH |
2805 | /* Nonzero if we saw an escape sequence specifying |
2806 | a multibyte character. */ | |
e7fc914b | 2807 | int force_multibyte = 0; |
1571601b | 2808 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2809 | a single-byte character. */ |
2810 | int force_singlebyte = 0; | |
078e7b4a | 2811 | int cancel = 0; |
5150eeec | 2812 | int nchars = 0; |
078e7b4a JB |
2813 | |
2814 | while ((c = READCHAR) >= 0 | |
2815 | && c != '\"') | |
2816 | { | |
449fea39 | 2817 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2818 | { |
5d65df0d GM |
2819 | int offset = p - read_buffer; |
2820 | read_buffer = (char *) xrealloc (read_buffer, | |
2821 | read_buffer_size *= 2); | |
2822 | p = read_buffer + offset; | |
078e7b4a JB |
2823 | end = read_buffer + read_buffer_size; |
2824 | } | |
bed23cb2 | 2825 | |
078e7b4a | 2826 | if (c == '\\') |
03e88613 | 2827 | { |
1571601b | 2828 | int modifiers; |
f6f79b37 | 2829 | |
8792be66 | 2830 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2831 | |
2832 | /* C is -1 if \ newline has just been seen */ | |
2833 | if (c == -1) | |
03e88613 | 2834 | { |
bed23cb2 RS |
2835 | if (p == read_buffer) |
2836 | cancel = 1; | |
03e88613 RS |
2837 | continue; |
2838 | } | |
bed23cb2 | 2839 | |
1571601b KH |
2840 | modifiers = c & CHAR_MODIFIER_MASK; |
2841 | c = c & ~CHAR_MODIFIER_MASK; | |
2842 | ||
8792be66 | 2843 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2844 | force_singlebyte = 1; |
8792be66 | 2845 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2846 | force_multibyte = 1; |
8792be66 | 2847 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2848 | { |
2849 | /* Allow `\C- ' and `\C-?'. */ | |
2850 | if (modifiers == CHAR_CTL) | |
2851 | { | |
2852 | if (c == ' ') | |
2853 | c = 0, modifiers = 0; | |
2854 | else if (c == '?') | |
2855 | c = 127, modifiers = 0; | |
2856 | } | |
2857 | if (modifiers & CHAR_SHIFT) | |
2858 | { | |
2859 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2860 | if (c >= 'A' && c <= 'Z') | |
2861 | modifiers &= ~CHAR_SHIFT; | |
2862 | else if (c >= 'a' && c <= 'z') | |
2863 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2864 | } | |
2865 | ||
2866 | if (modifiers & CHAR_META) | |
2867 | { | |
2868 | /* Move the meta bit to the right place for a | |
2869 | string. */ | |
2870 | modifiers &= ~CHAR_META; | |
2871 | c = BYTE8_TO_CHAR (c | 0x80); | |
2872 | force_singlebyte = 1; | |
2873 | } | |
2874 | } | |
5150eeec | 2875 | |
1571601b KH |
2876 | /* Any modifiers remaining are invalid. */ |
2877 | if (modifiers) | |
2878 | error ("Invalid modifier in string"); | |
2879 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2880 | } |
8792be66 | 2881 | else |
5150eeec | 2882 | { |
1571601b | 2883 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2884 | if (CHAR_BYTE8_P (c)) |
2885 | force_singlebyte = 1; | |
2886 | else if (! ASCII_CHAR_P (c)) | |
2887 | force_multibyte = 1; | |
f943104a | 2888 | } |
5150eeec | 2889 | nchars++; |
078e7b4a | 2890 | } |
5150eeec | 2891 | |
6f7f43d5 | 2892 | if (c < 0) |
9c97398c | 2893 | end_of_file_error (); |
078e7b4a JB |
2894 | |
2895 | /* If purifying, and string starts with \ newline, | |
2896 | return zero instead. This is for doc strings | |
08564963 | 2897 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2898 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2899 | return make_number (0); |
2900 | ||
1571601b KH |
2901 | if (force_multibyte) |
2902 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2903 | ; |
1571601b | 2904 | else if (force_singlebyte) |
a742d646 | 2905 | { |
1571601b KH |
2906 | nchars = str_as_unibyte (read_buffer, p - read_buffer); |
2907 | p = read_buffer + nchars; | |
a742d646 | 2908 | } |
e28552a4 | 2909 | else |
1571601b | 2910 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2911 | ; |
e7fc914b | 2912 | |
abb13b09 CW |
2913 | /* We want readchar_count to be the number of characters, not |
2914 | bytes. Hence we adjust for multibyte characters in the | |
2915 | string. ... But it doesn't seem to be necessary, because | |
2916 | READCHAR *does* read multibyte characters from buffers. */ | |
2917 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2918 | if (read_pure) |
491f16a2 | 2919 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2920 | (force_multibyte |
2921 | || (p - read_buffer != nchars))); | |
491f16a2 | 2922 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2923 | (force_multibyte |
2924 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2925 | } |
2926 | ||
109d300c JB |
2927 | case '.': |
2928 | { | |
109d300c JB |
2929 | int next_char = READCHAR; |
2930 | UNREAD (next_char); | |
2931 | ||
035eec48 | 2932 | if (next_char <= 040 |
e613ea97 | 2933 | || (next_char < 0200 |
95af0924 KS |
2934 | && (index ("\"';([#?", next_char) |
2935 | || (!first_in_list && next_char == '`') | |
2936 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2937 | { |
6428369f KH |
2938 | *pch = c; |
2939 | return Qnil; | |
109d300c JB |
2940 | } |
2941 | ||
2942 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2943 | below will now loop at least once, assuring that we will not | |
2944 | try to UNREAD two characters in a row. */ | |
2945 | } | |
078e7b4a | 2946 | default: |
17634846 | 2947 | default_label: |
88852d45 | 2948 | if (c <= 040) goto retry; |
adef3de7 RS |
2949 | if (c == 0x8a0) /* NBSP */ |
2950 | goto retry; | |
078e7b4a | 2951 | { |
38404229 | 2952 | char *p = read_buffer; |
481c6336 | 2953 | int quoted = 0; |
078e7b4a JB |
2954 | |
2955 | { | |
38404229 | 2956 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2957 | |
6f7f43d5 | 2958 | while (c > 040 |
adef3de7 | 2959 | && c != 0x8a0 /* NBSP */ |
e613ea97 KH |
2960 | && (c >= 0200 |
2961 | || (!index ("\"';()[]#", c) | |
2962 | && !(!first_in_list && c == '`') | |
2963 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2964 | { |
449fea39 | 2965 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2966 | { |
5d65df0d GM |
2967 | int offset = p - read_buffer; |
2968 | read_buffer = (char *) xrealloc (read_buffer, | |
2969 | read_buffer_size *= 2); | |
2970 | p = read_buffer + offset; | |
078e7b4a JB |
2971 | end = read_buffer + read_buffer_size; |
2972 | } | |
177c0ea7 | 2973 | |
078e7b4a | 2974 | if (c == '\\') |
481c6336 RS |
2975 | { |
2976 | c = READCHAR; | |
4ab11c09 GM |
2977 | if (c == -1) |
2978 | end_of_file_error (); | |
481c6336 RS |
2979 | quoted = 1; |
2980 | } | |
6f7f43d5 | 2981 | |
1202434b KH |
2982 | if (multibyte) |
2983 | p += CHAR_STRING (c, p); | |
2984 | else | |
2985 | *p++ = c; | |
078e7b4a JB |
2986 | c = READCHAR; |
2987 | } | |
2988 | ||
2989 | if (p == end) | |
2990 | { | |
5d65df0d GM |
2991 | int offset = p - read_buffer; |
2992 | read_buffer = (char *) xrealloc (read_buffer, | |
2993 | read_buffer_size *= 2); | |
2994 | p = read_buffer + offset; | |
2995 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2996 | } |
2997 | *p = 0; | |
2998 | if (c >= 0) | |
2999 | UNREAD (c); | |
3000 | } | |
3001 | ||
4ad679f9 | 3002 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
3003 | { |
3004 | register char *p1; | |
481c6336 RS |
3005 | p1 = read_buffer; |
3006 | if (*p1 == '+' || *p1 == '-') p1++; | |
3007 | /* Is it an integer? */ | |
3008 | if (p1 != p) | |
3009 | { | |
3010 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
3011 | /* Integers can have trailing decimal points. */ |
3012 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
3013 | if (p1 == p) |
3014 | /* It is an integer. */ | |
3015 | { | |
481c6336 RS |
3016 | if (p1[-1] == '.') |
3017 | p1[-1] = '\0'; | |
155a6764 SM |
3018 | { |
3019 | /* EMACS_INT n = atol (read_buffer); */ | |
3020 | char *endptr = NULL; | |
3021 | EMACS_INT n = (errno = 0, | |
3022 | strtol (read_buffer, &endptr, 10)); | |
3023 | if (errno == ERANGE && endptr) | |
3024 | { | |
3025 | Lisp_Object args | |
3026 | = Fcons (make_string (read_buffer, | |
3027 | endptr - read_buffer), | |
3028 | Qnil); | |
3029 | xsignal (Qoverflow_error, args); | |
3030 | } | |
3031 | return make_fixnum_or_float (n); | |
3032 | } | |
481c6336 RS |
3033 | } |
3034 | } | |
be95bee9 | 3035 | if (isfloat_string (read_buffer, 0)) |
eb659c41 | 3036 | { |
a8972052 PE |
3037 | /* Compute NaN and infinities using 0.0 in a variable, |
3038 | to cope with compilers that think they are smarter | |
5e24a1f7 | 3039 | than we are. */ |
3c329963 | 3040 | double zero = 0.0; |
a8972052 PE |
3041 | |
3042 | double value; | |
3043 | ||
3044 | /* Negate the value ourselves. This treats 0, NaNs, | |
3045 | and infinity properly on IEEE floating point hosts, | |
3046 | and works around a common bug where atof ("-0.0") | |
3047 | drops the sign. */ | |
3048 | int negative = read_buffer[0] == '-'; | |
3049 | ||
3050 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 3051 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 3052 | switch (p[-1]) |
eb659c41 | 3053 | { |
a8972052 PE |
3054 | case 'F': |
3055 | value = 1.0 / zero; | |
3056 | break; | |
3057 | case 'N': | |
3058 | value = zero / zero; | |
7690cbb0 RS |
3059 | |
3060 | /* If that made a "negative" NaN, negate it. */ | |
3061 | ||
3062 | { | |
3063 | int i; | |
3064 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
3065 | ||
3066 | u_data.d = value; | |
3067 | u_minus_zero.d = - 0.0; | |
3068 | for (i = 0; i < sizeof (double); i++) | |
3069 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3070 | { | |
3071 | value = - value; | |
3072 | break; | |
3073 | } | |
3074 | } | |
3075 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
3076 | break; |
3077 | default: | |
3078 | value = atof (read_buffer + negative); | |
3079 | break; | |
eb659c41 | 3080 | } |
a8972052 PE |
3081 | |
3082 | return make_float (negative ? - value : value); | |
eb659c41 | 3083 | } |
481c6336 | 3084 | } |
abb13b09 | 3085 | { |
e93abe3d KH |
3086 | Lisp_Object name, result; |
3087 | EMACS_INT nbytes = p - read_buffer; | |
3088 | EMACS_INT nchars | |
3089 | = (multibyte ? multibyte_chars_in_text (read_buffer, nbytes) | |
3090 | : nbytes); | |
3091 | ||
3092 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
3093 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
3094 | else | |
3095 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
3096 | result = (uninterned_symbol ? Fmake_symbol (name) | |
3097 | : Fintern (name, Qnil)); | |
1202434b | 3098 | |
abb13b09 CW |
3099 | if (EQ (Vread_with_symbol_positions, Qt) |
3100 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 3101 | Vread_symbol_positions_list = |
abb13b09 CW |
3102 | /* Kind of a hack; this will probably fail if characters |
3103 | in the symbol name were escaped. Not really a big | |
3104 | deal, though. */ | |
f74db720 SM |
3105 | Fcons (Fcons (result, |
3106 | make_number (readchar_count | |
3107 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
3108 | Vread_symbol_positions_list); |
3109 | return result; | |
3110 | } | |
078e7b4a JB |
3111 | } |
3112 | } | |
3113 | } | |
3114 | \f | |
9e062b6c RS |
3115 | |
3116 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
3117 | static Lisp_Object seen_list; | |
3118 | ||
3119 | static void | |
3120 | substitute_object_in_subtree (object, placeholder) | |
3121 | Lisp_Object object; | |
3122 | Lisp_Object placeholder; | |
3123 | { | |
3124 | Lisp_Object check_object; | |
3125 | ||
3126 | /* We haven't seen any objects when we start. */ | |
3127 | seen_list = Qnil; | |
3128 | ||
3129 | /* Make all the substitutions. */ | |
3130 | check_object | |
3131 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3132 | |
9e062b6c RS |
3133 | /* Clear seen_list because we're done with it. */ |
3134 | seen_list = Qnil; | |
3135 | ||
3136 | /* The returned object here is expected to always eq the | |
3137 | original. */ | |
3138 | if (!EQ (check_object, object)) | |
3139 | error ("Unexpected mutation error in reader"); | |
3140 | } | |
3141 | ||
3142 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3143 | #define SUBSTITUTE(get_val, set_val) \ |
3144 | do { \ | |
3145 | Lisp_Object old_value = get_val; \ | |
3146 | Lisp_Object true_value \ | |
3147 | = substitute_object_recurse (object, placeholder, \ | |
3148 | old_value); \ | |
3149 | \ | |
3150 | if (!EQ (old_value, true_value)) \ | |
3151 | { \ | |
3152 | set_val; \ | |
3153 | } \ | |
3154 | } while (0) | |
9e062b6c RS |
3155 | |
3156 | static Lisp_Object | |
3157 | substitute_object_recurse (object, placeholder, subtree) | |
3158 | Lisp_Object object; | |
3159 | Lisp_Object placeholder; | |
3160 | Lisp_Object subtree; | |
3161 | { | |
3162 | /* If we find the placeholder, return the target object. */ | |
3163 | if (EQ (placeholder, subtree)) | |
3164 | return object; | |
3165 | ||
3166 | /* If we've been to this node before, don't explore it again. */ | |
3167 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3168 | return subtree; | |
3169 | ||
3170 | /* If this node can be the entry point to a cycle, remember that | |
3171 | we've seen it. It can only be such an entry point if it was made | |
3172 | by #n=, which means that we can find it as a value in | |
3173 | read_objects. */ | |
3174 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3175 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3176 | |
9e062b6c RS |
3177 | /* Recurse according to subtree's type. |
3178 | Every branch must return a Lisp_Object. */ | |
3179 | switch (XTYPE (subtree)) | |
3180 | { | |
3181 | case Lisp_Vectorlike: | |
3182 | { | |
7a3d90dc SM |
3183 | int i, length = 0; |
3184 | if (BOOL_VECTOR_P (subtree)) | |
3185 | return subtree; /* No sub-objects anyway. */ | |
3186 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3187 | || COMPILEDP (subtree)) | |
3188 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3189 | else if (VECTORP (subtree)) | |
3190 | length = ASIZE (subtree); | |
3191 | else | |
3192 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3193 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3194 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3195 | behavior. */ |
3196 | wrong_type_argument (Qsequencep, subtree); | |
3197 | ||
9e062b6c | 3198 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3199 | SUBSTITUTE (AREF (subtree, i), |
3200 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3201 | return subtree; |
3202 | } | |
3203 | ||
3204 | case Lisp_Cons: | |
3205 | { | |
7a3d90dc SM |
3206 | SUBSTITUTE (XCAR (subtree), |
3207 | XSETCAR (subtree, true_value)); | |
3208 | SUBSTITUTE (XCDR (subtree), | |
3209 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3210 | return subtree; |
3211 | } | |
3212 | ||
9e062b6c RS |
3213 | case Lisp_String: |
3214 | { | |
3215 | /* Check for text properties in each interval. | |
e61b9b87 | 3216 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3217 | |
d5db4077 | 3218 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3219 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3220 | |
0d74b006 SM |
3221 | traverse_intervals_noorder (root_interval, |
3222 | &substitute_in_interval, arg); | |
9e062b6c RS |
3223 | |
3224 | return subtree; | |
3225 | } | |
9e062b6c RS |
3226 | |
3227 | /* Other types don't recurse any further. */ | |
3228 | default: | |
3229 | return subtree; | |
3230 | } | |
3231 | } | |
3232 | ||
3233 | /* Helper function for substitute_object_recurse. */ | |
3234 | static void | |
3235 | substitute_in_interval (interval, arg) | |
3236 | INTERVAL interval; | |
3237 | Lisp_Object arg; | |
3238 | { | |
3239 | Lisp_Object object = Fcar (arg); | |
3240 | Lisp_Object placeholder = Fcdr (arg); | |
3241 | ||
9735b9ce | 3242 | SUBSTITUTE (interval->plist, interval->plist = true_value); |
9e062b6c RS |
3243 | } |
3244 | ||
3245 | \f | |
078e7b4a JB |
3246 | #define LEAD_INT 1 |
3247 | #define DOT_CHAR 2 | |
3248 | #define TRAIL_INT 4 | |
3249 | #define E_CHAR 8 | |
3250 | #define EXP_INT 16 | |
3251 | ||
3252 | int | |
be95bee9 | 3253 | isfloat_string (cp, ignore_trailing) |
078e7b4a | 3254 | register char *cp; |
be95bee9 | 3255 | int ignore_trailing; |
078e7b4a | 3256 | { |
c1a2f60a | 3257 | register int state; |
177c0ea7 | 3258 | |
d8578e58 RS |
3259 | char *start = cp; |
3260 | ||
078e7b4a JB |
3261 | state = 0; |
3262 | if (*cp == '+' || *cp == '-') | |
3263 | cp++; | |
3264 | ||
075027b1 | 3265 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3266 | { |
3267 | state |= LEAD_INT; | |
075027b1 RS |
3268 | while (*cp >= '0' && *cp <= '9') |
3269 | cp++; | |
078e7b4a JB |
3270 | } |
3271 | if (*cp == '.') | |
3272 | { | |
3273 | state |= DOT_CHAR; | |
3274 | cp++; | |
3275 | } | |
075027b1 | 3276 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3277 | { |
3278 | state |= TRAIL_INT; | |
075027b1 | 3279 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3280 | cp++; |
3281 | } | |
a35f88bf | 3282 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3283 | { |
3284 | state |= E_CHAR; | |
3285 | cp++; | |
e73997a1 RS |
3286 | if (*cp == '+' || *cp == '-') |
3287 | cp++; | |
078e7b4a | 3288 | } |
078e7b4a | 3289 | |
075027b1 | 3290 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3291 | { |
3292 | state |= EXP_INT; | |
075027b1 | 3293 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3294 | cp++; |
3295 | } | |
d8578e58 RS |
3296 | else if (cp == start) |
3297 | ; | |
eb659c41 RS |
3298 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3299 | { | |
3300 | state |= EXP_INT; | |
3301 | cp += 3; | |
3302 | } | |
3303 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3304 | { | |
3305 | state |= EXP_INT; | |
3306 | cp += 3; | |
3307 | } | |
3308 | ||
be95bee9 JB |
3309 | return ((ignore_trailing |
3310 | || (*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) | |
078e7b4a | 3311 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3312 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3313 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3314 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3315 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3316 | } |
cc94f3b2 | 3317 | |
078e7b4a JB |
3318 | \f |
3319 | static Lisp_Object | |
c15cfd1f | 3320 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 3321 | Lisp_Object readcharfun; |
c15cfd1f | 3322 | int bytecodeflag; |
078e7b4a JB |
3323 | { |
3324 | register int i; | |
3325 | register int size; | |
3326 | register Lisp_Object *ptr; | |
c15cfd1f | 3327 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3328 | register struct Lisp_Cons *otem; |
3329 | Lisp_Object len; | |
3330 | ||
3331 | tem = read_list (1, readcharfun); | |
3332 | len = Flength (tem); | |
3333 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3334 | ||
078e7b4a JB |
3335 | size = XVECTOR (vector)->size; |
3336 | ptr = XVECTOR (vector)->contents; | |
3337 | for (i = 0; i < size; i++) | |
3338 | { | |
c15cfd1f RS |
3339 | item = Fcar (tem); |
3340 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3341 | bytecode object, the docstring containing the bytecode and | |
3342 | constants values must be treated as unibyte and passed to | |
3343 | Fread, to get the actual bytecode string and constants vector. */ | |
3344 | if (bytecodeflag && load_force_doc_strings) | |
3345 | { | |
3346 | if (i == COMPILED_BYTECODE) | |
3347 | { | |
3348 | if (!STRINGP (item)) | |
6fa2b890 | 3349 | error ("Invalid byte code"); |
c15cfd1f RS |
3350 | |
3351 | /* Delay handling the bytecode slot until we know whether | |
3352 | it is lazily-loaded (we can tell by whether the | |
3353 | constants slot is nil). */ | |
3354 | ptr[COMPILED_CONSTANTS] = item; | |
3355 | item = Qnil; | |
3356 | } | |
3357 | else if (i == COMPILED_CONSTANTS) | |
3358 | { | |
3359 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3360 | ||
3361 | if (NILP (item)) | |
3362 | { | |
3363 | /* Coerce string to unibyte (like string-as-unibyte, | |
3364 | but without generating extra garbage and | |
3365 | guaranteeing no change in the contents). */ | |
bee91904 | 3366 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3367 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3368 | |
8792be66 | 3369 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3370 | if (!CONSP (item)) |
6fa2b890 | 3371 | error ("Invalid byte code"); |
c15cfd1f RS |
3372 | |
3373 | otem = XCONS (item); | |
c1d497be KR |
3374 | bytestr = XCAR (item); |
3375 | item = XCDR (item); | |
c15cfd1f RS |
3376 | free_cons (otem); |
3377 | } | |
3378 | ||
3379 | /* Now handle the bytecode slot. */ | |
3380 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3381 | } | |
8792be66 KH |
3382 | else if (i == COMPILED_DOC_STRING |
3383 | && STRINGP (item) | |
3384 | && ! STRING_MULTIBYTE (item)) | |
3385 | { | |
3386 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3387 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3388 | else | |
3389 | item = Fstring_as_multibyte (item); | |
3390 | } | |
c15cfd1f RS |
3391 | } |
3392 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3393 | otem = XCONS (tem); |
3394 | tem = Fcdr (tem); | |
3395 | free_cons (otem); | |
3396 | } | |
3397 | return vector; | |
3398 | } | |
177c0ea7 | 3399 | |
6f7f43d5 RS |
3400 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3401 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3402 | and make structure pure. */ |
3403 | ||
3404 | static Lisp_Object | |
3405 | read_list (flag, readcharfun) | |
3406 | int flag; | |
3407 | register Lisp_Object readcharfun; | |
3408 | { | |
3409 | /* -1 means check next element for defun, | |
3410 | 0 means don't check, | |
3411 | 1 means already checked and found defun. */ | |
3412 | int defunflag = flag < 0 ? -1 : 0; | |
3413 | Lisp_Object val, tail; | |
3414 | register Lisp_Object elt, tem; | |
3415 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3416 | /* 0 is the normal case. |
b2a30870 | 3417 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3418 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3419 | int doc_reference = 0; |
078e7b4a | 3420 | |
17634846 RS |
3421 | /* Initialize this to 1 if we are reading a list. */ |
3422 | int first_in_list = flag <= 0; | |
3423 | ||
078e7b4a JB |
3424 | val = Qnil; |
3425 | tail = Qnil; | |
3426 | ||
3427 | while (1) | |
3428 | { | |
e28552a4 | 3429 | int ch; |
078e7b4a | 3430 | GCPRO2 (val, tail); |
17634846 | 3431 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3432 | UNGCPRO; |
20ea2964 | 3433 | |
17634846 RS |
3434 | first_in_list = 0; |
3435 | ||
821d417e | 3436 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3437 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3438 | && ! NILP (elt) |
821d417e RS |
3439 | && !NILP (Vpurify_flag)) |
3440 | { | |
3441 | if (NILP (Vdoc_file_name)) | |
3442 | /* We have not yet called Snarf-documentation, so assume | |
3443 | this file is described in the DOC-MM.NN file | |
3444 | and Snarf-documentation will fill in the right value later. | |
3445 | For now, replace the whole list with 0. */ | |
3446 | doc_reference = 1; | |
3447 | else | |
3448 | /* We have already called Snarf-documentation, so make a relative | |
3449 | file name for this file, so it can be found properly | |
3450 | in the installed Lisp directory. | |
3451 | We don't use Fexpand_file_name because that would make | |
3452 | the directory absolute now. */ | |
3453 | elt = concat2 (build_string ("../lisp/"), | |
3454 | Ffile_name_nondirectory (elt)); | |
3455 | } | |
b2a30870 | 3456 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3457 | && ! NILP (elt) |
b2a30870 RS |
3458 | && load_force_doc_strings) |
3459 | doc_reference = 2; | |
20ea2964 | 3460 | |
6428369f | 3461 | if (ch) |
078e7b4a JB |
3462 | { |
3463 | if (flag > 0) | |
3464 | { | |
6428369f | 3465 | if (ch == ']') |
078e7b4a | 3466 | return val; |
336d4a9c | 3467 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3468 | } |
6428369f | 3469 | if (ch == ')') |
078e7b4a | 3470 | return val; |
6428369f | 3471 | if (ch == '.') |
078e7b4a JB |
3472 | { |
3473 | GCPRO2 (val, tail); | |
265a9e55 | 3474 | if (!NILP (tail)) |
f5df591a | 3475 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3476 | else |
3477 | val = read0 (readcharfun); | |
17634846 | 3478 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3479 | UNGCPRO; |
6428369f | 3480 | if (ch == ')') |
821d417e RS |
3481 | { |
3482 | if (doc_reference == 1) | |
3483 | return make_number (0); | |
b2a30870 RS |
3484 | if (doc_reference == 2) |
3485 | { | |
3486 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3487 | If it's in saved_doc_string, get it from there. |
3488 | ||
3489 | Here, we don't know if the string is a | |
3490 | bytecode string or a doc string. As a | |
3491 | bytecode string must be unibyte, we always | |
3492 | return a unibyte string. If it is actually a | |
3493 | doc string, caller must make it | |
3494 | multibyte. */ | |
8f924df7 | 3495 | |
c1d497be | 3496 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3497 | /* Position is negative for user variables. */ |
3498 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3499 | if (pos >= saved_doc_string_position |
3500 | && pos < (saved_doc_string_position | |
3501 | + saved_doc_string_length)) | |
3502 | { | |
3503 | int start = pos - saved_doc_string_position; | |
3504 | int from, to; | |
3505 | ||
3506 | /* Process quoting with ^A, | |
3507 | and find the end of the string, | |
3508 | which is marked with ^_ (037). */ | |
3509 | for (from = start, to = start; | |
3510 | saved_doc_string[from] != 037;) | |
3511 | { | |
3512 | int c = saved_doc_string[from++]; | |
3513 | if (c == 1) | |
3514 | { | |
3515 | c = saved_doc_string[from++]; | |
3516 | if (c == 1) | |
3517 | saved_doc_string[to++] = c; | |
3518 | else if (c == '0') | |
3519 | saved_doc_string[to++] = 0; | |
3520 | else if (c == '_') | |
3521 | saved_doc_string[to++] = 037; | |
3522 | } | |
3523 | else | |
3524 | saved_doc_string[to++] = c; | |
3525 | } | |
3526 | ||
8792be66 KH |
3527 | return make_unibyte_string (saved_doc_string + start, |
3528 | to - start); | |
b2a30870 | 3529 | } |
c15cfd1f RS |
3530 | /* Look in prev_saved_doc_string the same way. */ |
3531 | else if (pos >= prev_saved_doc_string_position | |
3532 | && pos < (prev_saved_doc_string_position | |
3533 | + prev_saved_doc_string_length)) | |
3534 | { | |
3535 | int start = pos - prev_saved_doc_string_position; | |
3536 | int from, to; | |
3537 | ||
3538 | /* Process quoting with ^A, | |
3539 | and find the end of the string, | |
3540 | which is marked with ^_ (037). */ | |
3541 | for (from = start, to = start; | |
3542 | prev_saved_doc_string[from] != 037;) | |
3543 | { | |
3544 | int c = prev_saved_doc_string[from++]; | |
3545 | if (c == 1) | |
3546 | { | |
3547 | c = prev_saved_doc_string[from++]; | |
3548 | if (c == 1) | |
3549 | prev_saved_doc_string[to++] = c; | |
3550 | else if (c == '0') | |
3551 | prev_saved_doc_string[to++] = 0; | |
3552 | else if (c == '_') | |
3553 | prev_saved_doc_string[to++] = 037; | |
3554 | } | |
3555 | else | |
3556 | prev_saved_doc_string[to++] = c; | |
3557 | } | |
3558 | ||
8792be66 KH |
3559 | return make_unibyte_string (prev_saved_doc_string |
3560 | + start, | |
3561 | to - start); | |
c15cfd1f | 3562 | } |
b2a30870 | 3563 | else |
8792be66 | 3564 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3565 | } |
3566 | ||
821d417e RS |
3567 | return val; |
3568 | } | |
336d4a9c | 3569 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3570 | } |
336d4a9c | 3571 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3572 | } |
3573 | tem = (read_pure && flag <= 0 | |
3574 | ? pure_cons (elt, Qnil) | |
3575 | : Fcons (elt, Qnil)); | |
265a9e55 | 3576 | if (!NILP (tail)) |
f5df591a | 3577 | XSETCDR (tail, tem); |
078e7b4a JB |
3578 | else |
3579 | val = tem; | |
3580 | tail = tem; | |
3581 | if (defunflag < 0) | |
3582 | defunflag = EQ (elt, Qdefun); | |
3583 | else if (defunflag > 0) | |
3584 | read_pure = 1; | |
3585 | } | |
3586 | } | |
3587 | \f | |
3588 | Lisp_Object Vobarray; | |
3589 | Lisp_Object initial_obarray; | |
3590 | ||
d007f5c8 RS |
3591 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3592 | ||
3593 | int oblookup_last_bucket_number; | |
3594 | ||
3595 | static int hash_string (); | |
d007f5c8 RS |
3596 | |
3597 | /* Get an error if OBARRAY is not an obarray. | |
3598 | If it is one, return it. */ | |
3599 | ||
078e7b4a JB |
3600 | Lisp_Object |
3601 | check_obarray (obarray) | |
3602 | Lisp_Object obarray; | |
3603 | { | |
8878319c | 3604 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3605 | { |
3606 | /* If Vobarray is now invalid, force it to be valid. */ | |
3607 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3608 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3609 | } |
3610 | return obarray; | |
3611 | } | |
3612 | ||
d007f5c8 RS |
3613 | /* Intern the C string STR: return a symbol with that name, |
3614 | interned in the current obarray. */ | |
078e7b4a JB |
3615 | |
3616 | Lisp_Object | |
3617 | intern (str) | |
4b2dd274 | 3618 | const char *str; |
078e7b4a JB |
3619 | { |
3620 | Lisp_Object tem; | |
3621 | int len = strlen (str); | |
153a17b7 | 3622 | Lisp_Object obarray; |
078e7b4a | 3623 | |
153a17b7 | 3624 | obarray = Vobarray; |
cfff016d | 3625 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3626 | obarray = check_obarray (obarray); |
e28552a4 | 3627 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3628 | if (SYMBOLP (tem)) |
078e7b4a | 3629 | return tem; |
87631ef7 | 3630 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3631 | } |
4ad679f9 | 3632 | |
5e2327cf DN |
3633 | Lisp_Object |
3634 | intern_c_string (const char *str) | |
3635 | { | |
3636 | Lisp_Object tem; | |
3637 | int len = strlen (str); | |
3638 | Lisp_Object obarray; | |
3639 | ||
3640 | obarray = Vobarray; | |
3641 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) | |
3642 | obarray = check_obarray (obarray); | |
3643 | tem = oblookup (obarray, str, len, len); | |
3644 | if (SYMBOLP (tem)) | |
3645 | return tem; | |
3646 | ||
3647 | if (NILP (Vpurify_flag)) | |
3648 | /* Creating a non-pure string from a string literal not | |
3649 | implemented yet. We could just use make_string here and live | |
3650 | with the extra copy. */ | |
3651 | abort (); | |
3652 | ||
3653 | return Fintern (make_pure_c_string (str), obarray); | |
3654 | } | |
3655 | ||
4ad679f9 EN |
3656 | /* Create an uninterned symbol with name STR. */ |
3657 | ||
3658 | Lisp_Object | |
3659 | make_symbol (str) | |
3660 | char *str; | |
3661 | { | |
3662 | int len = strlen (str); | |
3663 | ||
3664 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3665 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3666 | : make_string (str, len))); |
3667 | } | |
d007f5c8 | 3668 | \f |
078e7b4a | 3669 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3670 | doc: /* Return the canonical symbol whose name is STRING. |
3671 | If there is none, one is created by this function and returned. | |
3672 | A second optional argument specifies the obarray to use; | |
3673 | it defaults to the value of `obarray'. */) | |
3674 | (string, obarray) | |
9391b698 | 3675 | Lisp_Object string, obarray; |
078e7b4a JB |
3676 | { |
3677 | register Lisp_Object tem, sym, *ptr; | |
3678 | ||
265a9e55 | 3679 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3680 | obarray = check_obarray (obarray); |
3681 | ||
b7826503 | 3682 | CHECK_STRING (string); |
078e7b4a | 3683 | |
d5db4077 KR |
3684 | tem = oblookup (obarray, SDATA (string), |
3685 | SCHARS (string), | |
3686 | SBYTES (string)); | |
cfff016d | 3687 | if (!INTEGERP (tem)) |
078e7b4a JB |
3688 | return tem; |
3689 | ||
265a9e55 | 3690 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3691 | string = Fpurecopy (string); |
3692 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3693 | |
3694 | if (EQ (obarray, initial_obarray)) | |
3695 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3696 | else | |
3697 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3698 | |
d5db4077 | 3699 | if ((SREF (string, 0) == ':') |
a458d45d | 3700 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3701 | { |
3702 | XSYMBOL (sym)->constant = 1; | |
3703 | XSYMBOL (sym)->value = sym; | |
3704 | } | |
a0549832 | 3705 | |
078e7b4a | 3706 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3707 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3708 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3709 | else | |
3710 | XSYMBOL (sym)->next = 0; | |
3711 | *ptr = sym; | |
3712 | return sym; | |
3713 | } | |
3714 | ||
3715 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3716 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3717 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3718 | symbol is searched for. | |
3719 | A second optional argument specifies the obarray to use; | |
3720 | it defaults to the value of `obarray'. */) | |
3721 | (name, obarray) | |
b55048d4 | 3722 | Lisp_Object name, obarray; |
078e7b4a | 3723 | { |
c2d47f4b | 3724 | register Lisp_Object tem, string; |
078e7b4a | 3725 | |
265a9e55 | 3726 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3727 | obarray = check_obarray (obarray); |
3728 | ||
b55048d4 GM |
3729 | if (!SYMBOLP (name)) |
3730 | { | |
b7826503 | 3731 | CHECK_STRING (name); |
c2d47f4b | 3732 | string = name; |
b55048d4 GM |
3733 | } |
3734 | else | |
c2d47f4b | 3735 | string = SYMBOL_NAME (name); |
078e7b4a | 3736 | |
c2d47f4b | 3737 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3738 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3739 | return Qnil; | |
3740 | else | |
078e7b4a | 3741 | return tem; |
078e7b4a | 3742 | } |
d007f5c8 RS |
3743 | \f |
3744 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3745 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3746 | The value is t if a symbol was found and deleted, nil otherwise. | |
3747 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3748 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3749 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3750 | (name, obarray) | |
d007f5c8 RS |
3751 | Lisp_Object name, obarray; |
3752 | { | |
3753 | register Lisp_Object string, tem; | |
3754 | int hash; | |
3755 | ||
3756 | if (NILP (obarray)) obarray = Vobarray; | |
3757 | obarray = check_obarray (obarray); | |
3758 | ||
3759 | if (SYMBOLP (name)) | |
d4c83cae | 3760 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3761 | else |
3762 | { | |
b7826503 | 3763 | CHECK_STRING (name); |
d007f5c8 RS |
3764 | string = name; |
3765 | } | |
3766 | ||
d5db4077 KR |
3767 | tem = oblookup (obarray, SDATA (string), |
3768 | SCHARS (string), | |
3769 | SBYTES (string)); | |
d007f5c8 RS |
3770 | if (INTEGERP (tem)) |
3771 | return Qnil; | |
3772 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3773 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3774 | return Qnil; | |
3775 | ||
8ab1650e SM |
3776 | /* There are plenty of other symbols which will screw up the Emacs |
3777 | session if we unintern them, as well as even more ways to use | |
3778 | `setq' or `fset' or whatnot to make the Emacs session | |
3779 | unusable. Let's not go down this silly road. --Stef */ | |
3780 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3781 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3782 | |
44c6c019 GM |
3783 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3784 | XSYMBOL (tem)->constant = 0; | |
3785 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3786 | |
d007f5c8 RS |
3787 | hash = oblookup_last_bucket_number; |
3788 | ||
3789 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3790 | { |
3791 | if (XSYMBOL (tem)->next) | |
3792 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3793 | else | |
3794 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3795 | } | |
d007f5c8 RS |
3796 | else |
3797 | { | |
3798 | Lisp_Object tail, following; | |
3799 | ||
3800 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3801 | XSYMBOL (tail)->next; | |
3802 | tail = following) | |
3803 | { | |
3804 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3805 | if (EQ (following, tem)) | |
3806 | { | |
3807 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3808 | break; | |
3809 | } | |
3810 | } | |
3811 | } | |
3812 | ||
3813 | return Qt; | |
3814 | } | |
3815 | \f | |
3816 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3817 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3818 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3819 | |
3820 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3821 | |
3822 | Lisp_Object | |
e28552a4 | 3823 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3824 | Lisp_Object obarray; |
4b2dd274 | 3825 | register const char *ptr; |
e28552a4 | 3826 | int size, size_byte; |
078e7b4a | 3827 | { |
7a70b397 RS |
3828 | int hash; |
3829 | int obsize; | |
078e7b4a JB |
3830 | register Lisp_Object tail; |
3831 | Lisp_Object bucket, tem; | |
3832 | ||
cfff016d | 3833 | if (!VECTORP (obarray) |
7c79a684 | 3834 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3835 | { |
3836 | obarray = check_obarray (obarray); | |
3837 | obsize = XVECTOR (obarray)->size; | |
3838 | } | |
519418b3 RS |
3839 | /* This is sometimes needed in the middle of GC. */ |
3840 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3841 | hash = hash_string (ptr, size_byte) % obsize; |
078e7b4a | 3842 | bucket = XVECTOR (obarray)->contents[hash]; |
d007f5c8 | 3843 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3844 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3845 | ; |
cfff016d | 3846 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3847 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3848 | else |
3849 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3850 | { |
d5db4077 KR |
3851 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3852 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3853 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3854 | return tail; |
3855 | else if (XSYMBOL (tail)->next == 0) | |
3856 | break; | |
3857 | } | |
1805de4f | 3858 | XSETINT (tem, hash); |
078e7b4a JB |
3859 | return tem; |
3860 | } | |
3861 | ||
3862 | static int | |
3863 | hash_string (ptr, len) | |
4b2dd274 | 3864 | const unsigned char *ptr; |
078e7b4a JB |
3865 | int len; |
3866 | { | |
4b2dd274 KR |
3867 | register const unsigned char *p = ptr; |
3868 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3869 | register unsigned char c; |
3870 | register int hash = 0; | |
3871 | ||
3872 | while (p != end) | |
3873 | { | |
3874 | c = *p++; | |
3875 | if (c >= 0140) c -= 40; | |
3876 | hash = ((hash<<3) + (hash>>28) + c); | |
3877 | } | |
3878 | return hash & 07777777777; | |
3879 | } | |
d007f5c8 | 3880 | \f |
078e7b4a JB |
3881 | void |
3882 | map_obarray (obarray, fn, arg) | |
3883 | Lisp_Object obarray; | |
d5b28a9d | 3884 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3885 | Lisp_Object arg; |
3886 | { | |
3887 | register int i; | |
3888 | register Lisp_Object tail; | |
b7826503 | 3889 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3890 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3891 | { | |
3892 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3893 | if (SYMBOLP (tail)) |
078e7b4a JB |
3894 | while (1) |
3895 | { | |
3896 | (*fn) (tail, arg); | |
3897 | if (XSYMBOL (tail)->next == 0) | |
3898 | break; | |
1805de4f | 3899 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3900 | } |
3901 | } | |
3902 | } | |
3903 | ||
d5b28a9d | 3904 | void |
078e7b4a JB |
3905 | mapatoms_1 (sym, function) |
3906 | Lisp_Object sym, function; | |
3907 | { | |
3908 | call1 (function, sym); | |
3909 | } | |
3910 | ||
3911 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3912 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3913 | OBARRAY defaults to the value of `obarray'. */) | |
3914 | (function, obarray) | |
078e7b4a JB |
3915 | Lisp_Object function, obarray; |
3916 | { | |
265a9e55 | 3917 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3918 | obarray = check_obarray (obarray); |
3919 | ||
3920 | map_obarray (obarray, mapatoms_1, function); | |
3921 | return Qnil; | |
3922 | } | |
3923 | ||
5e88a39e | 3924 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3925 | |
3926 | void | |
3927 | init_obarray () | |
3928 | { | |
3929 | Lisp_Object oblength; | |
3930 | int hash; | |
3931 | Lisp_Object *tem; | |
3932 | ||
baf69866 | 3933 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3934 | |
d67b4f80 | 3935 | Qnil = Fmake_symbol (make_pure_c_string ("nil")); |
078e7b4a JB |
3936 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3937 | initial_obarray = Vobarray; | |
3938 | staticpro (&initial_obarray); | |
3939 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3940 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3941 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3942 | |
078e7b4a JB |
3943 | /* These locals are to kludge around a pyramid compiler bug. */ |
3944 | hash = hash_string ("nil", 3); | |
3945 | /* Separate statement here to avoid VAXC bug. */ | |
3946 | hash %= OBARRAY_SIZE; | |
3947 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3948 | *tem = Qnil; | |
3949 | ||
d67b4f80 | 3950 | Qunbound = Fmake_symbol (make_pure_c_string ("unbound")); |
078e7b4a JB |
3951 | XSYMBOL (Qnil)->function = Qunbound; |
3952 | XSYMBOL (Qunbound)->value = Qunbound; | |
3953 | XSYMBOL (Qunbound)->function = Qunbound; | |
3954 | ||
d67b4f80 | 3955 | Qt = intern_c_string ("t"); |
078e7b4a JB |
3956 | XSYMBOL (Qnil)->value = Qnil; |
3957 | XSYMBOL (Qnil)->plist = Qnil; | |
3958 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3959 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3960 | |
3961 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3962 | Vpurify_flag = Qt; | |
3963 | ||
d67b4f80 | 3964 | Qvariable_documentation = intern_c_string ("variable-documentation"); |
0f73bb1c | 3965 | staticpro (&Qvariable_documentation); |
078e7b4a | 3966 | |
449fea39 | 3967 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3968 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3969 | } |
3970 | \f | |
3971 | void | |
3972 | defsubr (sname) | |
3973 | struct Lisp_Subr *sname; | |
3974 | { | |
3975 | Lisp_Object sym; | |
d67b4f80 | 3976 | sym = intern_c_string (sname->symbol_name); |
5a6891e2 | 3977 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 3978 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3979 | } |
3980 | ||
3981 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3982 | void | |
3983 | defalias (sname, string) | |
3984 | struct Lisp_Subr *sname; | |
3985 | char *string; | |
3986 | { | |
3987 | Lisp_Object sym; | |
3988 | sym = intern (string); | |
1805de4f | 3989 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3990 | } |
3991 | #endif /* NOTDEF */ | |
3992 | ||
078e7b4a | 3993 | /* Define an "integer variable"; a symbol whose value is forwarded |
0f011df0 JB |
3994 | to a C variable of type int. Sample call: |
3995 | DEFVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 3996 | void |
5e2327cf | 3997 | defvar_int (const char *namestring, EMACS_INT *address) |
078e7b4a | 3998 | { |
1a0f90f7 | 3999 | Lisp_Object sym, val; |
5e2327cf | 4000 | sym = intern_c_string (namestring); |
1a0f90f7 | 4001 | val = allocate_misc (); |
47e28b2c | 4002 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 4003 | XINTFWD (val)->intvar = address; |
44c6c019 | 4004 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
4005 | } |
4006 | ||
f0529b5b | 4007 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 4008 | nil if address contains 0. */ |
078e7b4a | 4009 | void |
5e2327cf | 4010 | defvar_bool (const char *namestring, int *address) |
078e7b4a | 4011 | { |
1a0f90f7 | 4012 | Lisp_Object sym, val; |
5e2327cf | 4013 | sym = intern_c_string (namestring); |
1a0f90f7 | 4014 | val = allocate_misc (); |
47e28b2c | 4015 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 4016 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 4017 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 4018 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
4019 | } |
4020 | ||
1a0f90f7 KH |
4021 | /* Similar but define a variable whose value is the Lisp Object stored |
4022 | at address. Two versions: with and without gc-marking of the C | |
4023 | variable. The nopro version is used when that variable will be | |
4024 | gc-marked for some other reason, since marking the same slot twice | |
4025 | can cause trouble with strings. */ | |
078e7b4a | 4026 | void |
5e2327cf | 4027 | defvar_lisp_nopro (const char *namestring, Lisp_Object *address) |
078e7b4a | 4028 | { |
1a0f90f7 | 4029 | Lisp_Object sym, val; |
5e2327cf | 4030 | sym = intern_c_string (namestring); |
1a0f90f7 | 4031 | val = allocate_misc (); |
47e28b2c | 4032 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 4033 | XOBJFWD (val)->objvar = address; |
44c6c019 | 4034 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
4035 | } |
4036 | ||
078e7b4a | 4037 | void |
5e2327cf | 4038 | defvar_lisp (const char *namestring, Lisp_Object *address) |
078e7b4a | 4039 | { |
1a0f90f7 KH |
4040 | defvar_lisp_nopro (namestring, address); |
4041 | staticpro (address); | |
078e7b4a JB |
4042 | } |
4043 | ||
950c215d | 4044 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 4045 | at a particular offset in the current kboard object. */ |
950c215d KH |
4046 | |
4047 | void | |
5e2327cf | 4048 | defvar_kboard (const char *namestring, int offset) |
950c215d KH |
4049 | { |
4050 | Lisp_Object sym, val; | |
5e2327cf | 4051 | sym = intern_c_string (namestring); |
950c215d | 4052 | val = allocate_misc (); |
47e28b2c | 4053 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 4054 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 4055 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 4056 | } |
078e7b4a | 4057 | \f |
11938f10 KH |
4058 | /* Record the value of load-path used at the start of dumping |
4059 | so we can see if the site changed it later during dumping. */ | |
4060 | static Lisp_Object dump_path; | |
4061 | ||
d5b28a9d | 4062 | void |
279499f0 | 4063 | init_lread () |
078e7b4a | 4064 | { |
46947372 | 4065 | char *normal; |
e73997a1 | 4066 | int turn_off_warning = 0; |
078e7b4a | 4067 | |
279499f0 | 4068 | /* Compute the default load-path. */ |
46947372 JB |
4069 | #ifdef CANNOT_DUMP |
4070 | normal = PATH_LOADSEARCH; | |
e065a56e | 4071 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
4072 | #else |
4073 | if (NILP (Vpurify_flag)) | |
4074 | normal = PATH_LOADSEARCH; | |
279499f0 | 4075 | else |
46947372 | 4076 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 4077 | |
46947372 JB |
4078 | /* In a dumped Emacs, we normally have to reset the value of |
4079 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
4080 | uses ../lisp, instead of the path of the installed elisp | |
4081 | libraries. However, if it appears that Vload_path was changed | |
4082 | from the default before dumping, don't override that value. */ | |
4746118a JB |
4083 | if (initialized) |
4084 | { | |
4746118a | 4085 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
4086 | { |
4087 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 4088 | if (!NILP (Vinstallation_directory)) |
80667d53 | 4089 | { |
3ddff138 RS |
4090 | Lisp_Object tem, tem1, sitelisp; |
4091 | ||
4092 | /* Remove site-lisp dirs from path temporarily and store | |
4093 | them in sitelisp, then conc them on at the end so | |
4094 | they're always first in path. */ | |
4095 | sitelisp = Qnil; | |
4096 | while (1) | |
4097 | { | |
4098 | tem = Fcar (Vload_path); | |
4099 | tem1 = Fstring_match (build_string ("site-lisp"), | |
4100 | tem, Qnil); | |
4101 | if (!NILP (tem1)) | |
4102 | { | |
4103 | Vload_path = Fcdr (Vload_path); | |
4104 | sitelisp = Fcons (tem, sitelisp); | |
4105 | } | |
4106 | else | |
4107 | break; | |
4108 | } | |
4109 | ||
74180aa4 | 4110 | /* Add to the path the lisp subdir of the |
3a3056e5 | 4111 | installation dir, if it exists. */ |
74180aa4 RS |
4112 | tem = Fexpand_file_name (build_string ("lisp"), |
4113 | Vinstallation_directory); | |
3a3056e5 RS |
4114 | tem1 = Ffile_exists_p (tem); |
4115 | if (!NILP (tem1)) | |
4116 | { | |
4117 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
4118 | { |
4119 | turn_off_warning = 1; | |
3ddff138 | 4120 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 4121 | } |
3a3056e5 RS |
4122 | } |
4123 | else | |
4124 | /* That dir doesn't exist, so add the build-time | |
4125 | Lisp dirs instead. */ | |
4126 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 4127 | |
9fbc0116 RS |
4128 | /* Add leim under the installation dir, if it exists. */ |
4129 | tem = Fexpand_file_name (build_string ("leim"), | |
4130 | Vinstallation_directory); | |
4131 | tem1 = Ffile_exists_p (tem); | |
4132 | if (!NILP (tem1)) | |
4133 | { | |
4134 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4135 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
4136 | } |
4137 | ||
88852d45 | 4138 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
4139 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4140 | Vinstallation_directory); | |
4141 | tem1 = Ffile_exists_p (tem); | |
4142 | if (!NILP (tem1)) | |
4143 | { | |
4144 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4145 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 4146 | } |
0f337465 RS |
4147 | |
4148 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
4149 | and it is run from where it was built, add to load-path |
4150 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
4151 | |
4152 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4153 | { | |
33046fc9 RS |
4154 | Lisp_Object tem2; |
4155 | ||
0f337465 RS |
4156 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
4157 | Vinstallation_directory); | |
4158 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
4159 | |
4160 | /* Don't be fooled if they moved the entire source tree | |
4161 | AFTER dumping Emacs. If the build directory is indeed | |
4162 | different from the source dir, src/Makefile.in and | |
4163 | src/Makefile will not be found together. */ | |
4164 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4165 | Vinstallation_directory); | |
4166 | tem2 = Ffile_exists_p (tem); | |
4167 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4168 | { |
4169 | tem = Fexpand_file_name (build_string ("lisp"), | |
4170 | Vsource_directory); | |
4171 | ||
4172 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4173 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4174 | |
9fbc0116 RS |
4175 | tem = Fexpand_file_name (build_string ("leim"), |
4176 | Vsource_directory); | |
4177 | ||
4178 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4179 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4180 | |
0f337465 RS |
4181 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4182 | Vsource_directory); | |
4183 | ||
4184 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4185 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4186 | } |
4187 | } | |
3ddff138 RS |
4188 | if (!NILP (sitelisp)) |
4189 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
4190 | } |
4191 | } | |
4746118a JB |
4192 | } |
4193 | else | |
11938f10 | 4194 | { |
7b396c6c RS |
4195 | /* NORMAL refers to the lisp dir in the source directory. */ |
4196 | /* We used to add ../lisp at the front here, but | |
4197 | that caused trouble because it was copied from dump_path | |
88852d45 | 4198 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4199 | It should be unnecessary. */ |
4200 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4201 | dump_path = Vload_path; |
4202 | } | |
46947372 | 4203 | #endif |
279499f0 | 4204 | |
9735b9ce | 4205 | #if (!(defined (WINDOWSNT) || (defined (HAVE_NS)))) |
177c0ea7 JB |
4206 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4207 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4208 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
9e2a2647 | 4209 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
317073d5 | 4210 | |
078e7b4a | 4211 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4212 | if (!turn_off_warning) |
4213 | { | |
4214 | Lisp_Object path_tail; | |
078e7b4a | 4215 | |
e73997a1 RS |
4216 | for (path_tail = Vload_path; |
4217 | !NILP (path_tail); | |
c1d497be | 4218 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4219 | { |
4220 | Lisp_Object dirfile; | |
4221 | dirfile = Fcar (path_tail); | |
4222 | if (STRINGP (dirfile)) | |
4223 | { | |
4224 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 4225 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 4226 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4227 | XCAR (path_tail)); |
e73997a1 RS |
4228 | } |
4229 | } | |
4230 | } | |
9e2a2647 | 4231 | #endif /* !(WINDOWSNT || HAVE_NS) */ |
46947372 JB |
4232 | |
4233 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4234 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4235 | #ifndef CANNOT_DUMP |
46947372 JB |
4236 | if (NILP (Vpurify_flag) |
4237 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4238 | #endif |
279499f0 | 4239 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4240 | |
4241 | Vvalues = Qnil; | |
4242 | ||
078e7b4a | 4243 | load_in_progress = 0; |
4e53f562 | 4244 | Vload_file_name = Qnil; |
d2c6be7f RS |
4245 | |
4246 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4247 | |
4248 | Vstandard_input = Qt; | |
f74b0705 | 4249 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4250 | } |
4251 | ||
85496b8c | 4252 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4253 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4254 | |
d5b28a9d | 4255 | void |
85496b8c RS |
4256 | dir_warning (format, dirname) |
4257 | char *format; | |
4258 | Lisp_Object dirname; | |
4259 | { | |
4260 | char *buffer | |
d5db4077 | 4261 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4262 | |
d5db4077 KR |
4263 | fprintf (stderr, format, SDATA (dirname)); |
4264 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4265 | /* Don't log the warning before we've initialized!! */ |
4266 | if (initialized) | |
4267 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4268 | } |
4269 | ||
078e7b4a | 4270 | void |
279499f0 | 4271 | syms_of_lread () |
078e7b4a JB |
4272 | { |
4273 | defsubr (&Sread); | |
4274 | defsubr (&Sread_from_string); | |
4275 | defsubr (&Sintern); | |
4276 | defsubr (&Sintern_soft); | |
d007f5c8 | 4277 | defsubr (&Sunintern); |
971a4293 | 4278 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4279 | defsubr (&Sload); |
228d4b1c | 4280 | defsubr (&Seval_buffer); |
078e7b4a JB |
4281 | defsubr (&Seval_region); |
4282 | defsubr (&Sread_char); | |
4283 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4284 | defsubr (&Sread_event); |
078e7b4a JB |
4285 | defsubr (&Sget_file_char); |
4286 | defsubr (&Smapatoms); | |
86d00812 | 4287 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
4288 | |
4289 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
4290 | doc: /* Symbol table for use by `intern' and `read'. |
4291 | It is a vector whose length ought to be prime for best results. | |
4292 | The vector's contents don't make sense if examined from Lisp programs; | |
4293 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
4294 | |
4295 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
4296 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4297 | Order is reverse chronological. */); | |
078e7b4a JB |
4298 | |
4299 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
4300 | doc: /* Stream for read to get input from. |
4301 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4302 | Vstandard_input = Qt; |
4303 | ||
abb13b09 CW |
4304 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4305 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4306 | ||
4307 | If this variable is a buffer, then only forms read from that buffer | |
4308 | will be added to `read-symbol-positions-list'. | |
4309 | If this variable is t, then all read forms will be added. | |
4310 | The effect of all other values other than nil are not currently | |
4311 | defined, although they may be in the future. | |
4312 | ||
4313 | The positions are relative to the last call to `read' or | |
4314 | `read-from-string'. It is probably a bad idea to set this variable at | |
4315 | the toplevel; bind it instead. */); | |
4316 | Vread_with_symbol_positions = Qnil; | |
4317 | ||
4318 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4319 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4320 | This variable is modified during calls to `read' or |
4321 | `read-from-string', but only when `read-with-symbol-positions' is | |
4322 | non-nil. | |
4323 | ||
4324 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4325 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4326 | symbol from the position where `read' or `read-from-string' started. |
4327 | ||
4328 | Note that a symbol will appear multiple times in this list, if it was | |
4329 | read multiple times. The list is in the same order as the symbols | |
4330 | were read in. */); | |
177c0ea7 | 4331 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4332 | |
91f68422 CY |
4333 | DEFVAR_LISP ("read-circle", &Vread_circle, |
4334 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); | |
4335 | Vread_circle = Qt; | |
4336 | ||
078e7b4a | 4337 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4338 | doc: /* *List of directories to search for files to load. |
4339 | Each element is a string (directory name) or nil (try default directory). | |
4340 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4341 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4342 | |
e61b9b87 | 4343 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4344 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4345 | This list should not include the empty string. | |
4346 | `load' and related functions try to append these suffixes, in order, | |
4347 | to the specified file name if a Lisp suffix is allowed or required. */); | |
a4ada374 DN |
4348 | Vload_suffixes = Fcons (make_pure_c_string (".elc"), |
4349 | Fcons (make_pure_c_string (".el"), Qnil)); | |
971a4293 LT |
4350 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4351 | doc: /* List of suffixes that indicate representations of \ | |
4352 | the same file. | |
4353 | This list should normally start with the empty string. | |
4354 | ||
4355 | Enabling Auto Compression mode appends the suffixes in | |
4356 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4357 | mode removes them again. `load' and related functions use this list to | |
4358 | determine whether they should look for compressed versions of a file | |
4359 | and, if so, which suffixes they should try to append to the file name | |
4360 | in order to do so. However, if you want to customize which suffixes | |
4361 | the loading functions recognize as compression suffixes, you should | |
4362 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4363 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4364 | |
078e7b4a | 4365 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
e0f24100 | 4366 | doc: /* Non-nil if inside of `load'. */); |
d67b4f80 | 4367 | Qload_in_progress = intern_c_string ("load-in-progress"); |
2baf5e76 | 4368 | staticpro (&Qload_in_progress); |
078e7b4a JB |
4369 | |
4370 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4371 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4372 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4373 | ||
4374 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4375 | a symbol \(a feature name). | |
4376 | ||
4377 | When `load' is run and the file-name argument matches an element's | |
4378 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4379 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4380 | ||
4381 | An error in FORMS does not undo the load, but does prevent execution of | |
4382 | the rest of the FORMS. */); | |
078e7b4a JB |
4383 | Vafter_load_alist = Qnil; |
4384 | ||
ae321d28 | 4385 | DEFVAR_LISP ("load-history", &Vload_history, |
4801c5fa CY |
4386 | doc: /* Alist mapping loaded file names to symbols and features. |
4387 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4388 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4389 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4390 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4391 | for symbols and features not associated with any file. | |
4392 | ||
4393 | The remaining ENTRIES in the alist element describe the functions and | |
4394 | variables defined in that file, the features provided, and the | |
4395 | features required. Each entry has the form `(provide . FEATURE)', | |
4396 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
4397 | `(defface . SYMBOL)', or `(t . SYMBOL)'. In addition, an entry `(t | |
4398 | . SYMBOL)' may precede an entry `(defun . FUNCTION)', and means that | |
4399 | SYMBOL was an autoload before this file redefined it as a function. | |
0fc213e9 | 4400 | |
b502a9a1 RS |
4401 | During preloading, the file name recorded is relative to the main Lisp |
4402 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4403 | Vload_history = Qnil; |
4404 | ||
20ea2964 | 4405 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4406 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4407 | Vload_file_name = Qnil; |
4408 | ||
4116ab9f | 4409 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4410 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4411 | If the file loaded had extension `.elc', and the corresponding source file |
4412 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4413 | by functions like `custom-save-all' which edit the init file. |
4414 | While Emacs loads and evaluates the init file, value is the real name | |
4415 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4416 | Vuser_init_file = Qnil; |
4417 | ||
8a1f1537 | 4418 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4419 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4420 | Vcurrent_load_list = Qnil; |
4421 | ||
84a15045 | 4422 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4423 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4424 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4425 | Vload_read_function = Qnil; |
4426 | ||
fe0e03f3 | 4427 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4428 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4429 | This function is for doing code conversion before reading the source file. |
4430 | If nil, loading is done without any code conversion. | |
4431 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4432 | FULLNAME is the full name of FILE. | |
4433 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4434 | Vload_source_file_function = Qnil; |
4435 | ||
b2a30870 | 4436 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4437 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4438 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4439 | load_force_doc_strings = 0; |
4440 | ||
94e554db | 4441 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4442 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4443 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4444 | and is not meant for users to change. */); | |
94e554db RS |
4445 | load_convert_to_unibyte = 0; |
4446 | ||
1521a8fa | 4447 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4448 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4449 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4450 | Vsource_directory |
4451 | = Fexpand_file_name (build_string ("../"), | |
4452 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4453 | ||
4b104c41 | 4454 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4455 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4456 | Vpreloaded_file_list = Qnil; |
4457 | ||
1ffcc3b1 | 4458 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4459 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4460 | Vbyte_boolean_vars = Qnil; |
4461 | ||
da84f340 | 4462 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4463 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4464 | Some versions of XEmacs use different byte codes than Emacs. These | |
4465 | incompatible byte codes can make Emacs crash when it tries to execute | |
4466 | them. */); | |
da84f340 GM |
4467 | load_dangerous_libraries = 0; |
4468 | ||
beb0b7f9 EZ |
4469 | DEFVAR_BOOL ("force-load-messages", &force_load_messages, |
4470 | doc: /* Non-nil means force printing messages when loading Lisp files. | |
4471 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4472 | force_load_messages = 0; | |
4473 | ||
bb970e67 | 4474 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4475 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4476 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4477 | from the file, and matches them against this regular expression. | |
4478 | When the regular expression matches, the file is considered to be safe | |
4479 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4480 | Vbytecomp_version_regexp |
d67b4f80 | 4481 | = make_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4482 | |
3f39f996 RS |
4483 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4484 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4485 | Veval_buffer_list = Qnil; | |
4486 | ||
5aa273b0 SM |
4487 | DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes, |
4488 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); | |
4489 | Vold_style_backquotes = Qnil; | |
d67b4f80 | 4490 | Qold_style_backquotes = intern_c_string ("old-style-backquotes"); |
1d064697 | 4491 | staticpro (&Qold_style_backquotes); |
5aa273b0 | 4492 | |
a90ba1e2 KH |
4493 | /* Vsource_directory was initialized in init_lread. */ |
4494 | ||
d2c6be7f RS |
4495 | load_descriptor_list = Qnil; |
4496 | staticpro (&load_descriptor_list); | |
4497 | ||
d67b4f80 | 4498 | Qcurrent_load_list = intern_c_string ("current-load-list"); |
8a1f1537 RS |
4499 | staticpro (&Qcurrent_load_list); |
4500 | ||
d67b4f80 | 4501 | Qstandard_input = intern_c_string ("standard-input"); |
078e7b4a JB |
4502 | staticpro (&Qstandard_input); |
4503 | ||
d67b4f80 | 4504 | Qread_char = intern_c_string ("read-char"); |
078e7b4a JB |
4505 | staticpro (&Qread_char); |
4506 | ||
d67b4f80 | 4507 | Qget_file_char = intern_c_string ("get-file-char"); |
078e7b4a | 4508 | staticpro (&Qget_file_char); |
7bd279cd | 4509 | |
d67b4f80 | 4510 | Qget_emacs_mule_file_char = intern_c_string ("get-emacs-mule-file-char"); |
8792be66 KH |
4511 | staticpro (&Qget_emacs_mule_file_char); |
4512 | ||
d67b4f80 | 4513 | Qload_force_doc_strings = intern_c_string ("load-force-doc-strings"); |
8792be66 KH |
4514 | staticpro (&Qload_force_doc_strings); |
4515 | ||
d67b4f80 | 4516 | Qbackquote = intern_c_string ("`"); |
17634846 | 4517 | staticpro (&Qbackquote); |
d67b4f80 | 4518 | Qcomma = intern_c_string (","); |
17634846 | 4519 | staticpro (&Qcomma); |
d67b4f80 | 4520 | Qcomma_at = intern_c_string (",@"); |
17634846 | 4521 | staticpro (&Qcomma_at); |
d67b4f80 | 4522 | Qcomma_dot = intern_c_string (",."); |
17634846 RS |
4523 | staticpro (&Qcomma_dot); |
4524 | ||
d67b4f80 | 4525 | Qinhibit_file_name_operation = intern_c_string ("inhibit-file-name-operation"); |
74549846 RS |
4526 | staticpro (&Qinhibit_file_name_operation); |
4527 | ||
d67b4f80 | 4528 | Qascii_character = intern_c_string ("ascii-character"); |
7bd279cd | 4529 | staticpro (&Qascii_character); |
c2225d00 | 4530 | |
d67b4f80 | 4531 | Qfunction = intern_c_string ("function"); |
2b6cae0c RS |
4532 | staticpro (&Qfunction); |
4533 | ||
d67b4f80 | 4534 | Qload = intern_c_string ("load"); |
c2225d00 | 4535 | staticpro (&Qload); |
20ea2964 | 4536 | |
d67b4f80 | 4537 | Qload_file_name = intern_c_string ("load-file-name"); |
20ea2964 | 4538 | staticpro (&Qload_file_name); |
11938f10 | 4539 | |
d67b4f80 | 4540 | Qeval_buffer_list = intern_c_string ("eval-buffer-list"); |
3f39f996 RS |
4541 | staticpro (&Qeval_buffer_list); |
4542 | ||
d67b4f80 | 4543 | Qfile_truename = intern_c_string ("file-truename"); |
6bb6da3e AM |
4544 | staticpro (&Qfile_truename) ; |
4545 | ||
d67b4f80 | 4546 | Qdo_after_load_evaluation = intern_c_string ("do-after-load-evaluation"); |
6bb6da3e AM |
4547 | staticpro (&Qdo_after_load_evaluation) ; |
4548 | ||
11938f10 | 4549 | staticpro (&dump_path); |
4ad679f9 EN |
4550 | |
4551 | staticpro (&read_objects); | |
4552 | read_objects = Qnil; | |
9e062b6c | 4553 | staticpro (&seen_list); |
f153db13 | 4554 | seen_list = Qnil; |
177c0ea7 | 4555 | |
7ee3bd7b GM |
4556 | Vloads_in_progress = Qnil; |
4557 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4558 | |
d67b4f80 | 4559 | Qhash_table = intern_c_string ("hash-table"); |
f19a0f5b | 4560 | staticpro (&Qhash_table); |
d67b4f80 | 4561 | Qdata = intern_c_string ("data"); |
f19a0f5b | 4562 | staticpro (&Qdata); |
d67b4f80 | 4563 | Qtest = intern_c_string ("test"); |
f19a0f5b | 4564 | staticpro (&Qtest); |
d67b4f80 | 4565 | Qsize = intern_c_string ("size"); |
f19a0f5b | 4566 | staticpro (&Qsize); |
d67b4f80 | 4567 | Qweakness = intern_c_string ("weakness"); |
f19a0f5b | 4568 | staticpro (&Qweakness); |
d67b4f80 | 4569 | Qrehash_size = intern_c_string ("rehash-size"); |
f19a0f5b | 4570 | staticpro (&Qrehash_size); |
d67b4f80 | 4571 | Qrehash_threshold = intern_c_string ("rehash-threshold"); |
f19a0f5b | 4572 | staticpro (&Qrehash_threshold); |
078e7b4a | 4573 | } |
6b61353c KH |
4574 | |
4575 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4576 | (do not change this comment) */ |