Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
495bf630 | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, 1997, 1998, |
9942fa0c | 3 | 1999, 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc. |
078e7b4a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
46947372 | 9 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
078e7b4a JB |
21 | |
22 | ||
98280b76 | 23 | #include <config.h> |
078e7b4a JB |
24 | #include <stdio.h> |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/file.h> | |
2c1b5dbe | 28 | #include <errno.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
fe0e03f3 | 32 | #include "charset.h" |
57bda87a | 33 | #include <epaths.h> |
078e7b4a | 34 | #include "commands.h" |
e37c0805 | 35 | #include "keyboard.h" |
7bd279cd | 36 | #include "termhooks.h" |
eb191db2 | 37 | #include "coding.h" |
078e7b4a JB |
38 | |
39 | #ifdef lint | |
40 | #include <sys/inode.h> | |
41 | #endif /* lint */ | |
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 | |
8a1f1537 | 83 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 84 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 85 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 86 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 87 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
88 | |
89 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 90 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 91 | |
9942fa0c | 92 | /* non-zero iff inside `load' */ |
078e7b4a JB |
93 | int load_in_progress; |
94 | ||
1521a8fa RS |
95 | /* Directory in which the sources were found. */ |
96 | Lisp_Object Vsource_directory; | |
97 | ||
e61b9b87 SM |
98 | /* Search path and suffixes for files to be loaded. */ |
99 | Lisp_Object Vload_path, Vload_suffixes, default_suffixes; | |
078e7b4a | 100 | |
4116ab9f KH |
101 | /* File name of user's init file. */ |
102 | Lisp_Object Vuser_init_file; | |
103 | ||
ae321d28 RS |
104 | /* This is the user-visible association list that maps features to |
105 | lists of defs in their load files. */ | |
106 | Lisp_Object Vload_history; | |
107 | ||
20ea2964 | 108 | /* This is used to build the load history. */ |
ae321d28 RS |
109 | Lisp_Object Vcurrent_load_list; |
110 | ||
4b104c41 RS |
111 | /* List of files that were preloaded. */ |
112 | Lisp_Object Vpreloaded_file_list; | |
113 | ||
20ea2964 RS |
114 | /* Name of file actually being read by `load'. */ |
115 | Lisp_Object Vload_file_name; | |
116 | ||
84a15045 RS |
117 | /* Function to use for reading, in `load' and friends. */ |
118 | Lisp_Object Vload_read_function; | |
119 | ||
4ad679f9 EN |
120 | /* The association list of objects read with the #n=object form. |
121 | Each member of the list has the form (n . object), and is used to | |
122 | look up the object for the corresponding #n# construct. | |
123 | It must be set to nil before all top-level calls to read0. */ | |
124 | Lisp_Object read_objects; | |
125 | ||
b2a30870 RS |
126 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
127 | static int load_force_doc_strings; | |
128 | ||
94e554db RS |
129 | /* Nonzero means read should convert strings to unibyte. */ |
130 | static int load_convert_to_unibyte; | |
131 | ||
fe0e03f3 KH |
132 | /* Function to use for loading an Emacs lisp source file (not |
133 | compiled) instead of readevalloop. */ | |
134 | Lisp_Object Vload_source_file_function; | |
135 | ||
1ffcc3b1 DL |
136 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
137 | Lisp_Object Vbyte_boolean_vars; | |
138 | ||
abb13b09 CW |
139 | /* Whether or not to add a `read-positions' property to symbols |
140 | read. */ | |
141 | Lisp_Object Vread_with_symbol_positions; | |
142 | ||
143 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
144 | Lisp_Object Vread_symbol_positions_list; | |
145 | ||
d2c6be7f RS |
146 | /* List of descriptors now open for Fload. */ |
147 | static Lisp_Object load_descriptor_list; | |
148 | ||
b2a30870 | 149 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
150 | static FILE *instream; |
151 | ||
152 | /* When nonzero, read conses in pure space */ | |
153 | static int read_pure; | |
154 | ||
b2a30870 | 155 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 156 | static int read_from_string_index; |
bed23cb2 | 157 | static int read_from_string_index_byte; |
078e7b4a | 158 | static int read_from_string_limit; |
17634846 | 159 | |
6f7f43d5 RS |
160 | /* Number of bytes left to read in the buffer character |
161 | that `readchar' has already advanced over. */ | |
162 | static int readchar_backlog; | |
abb13b09 CW |
163 | /* Number of characters read in the current call to Fread or |
164 | Fread_from_string. */ | |
165 | static int readchar_count; | |
6f7f43d5 | 166 | |
c15cfd1f | 167 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
168 | static char *saved_doc_string; |
169 | /* Length of buffer allocated in saved_doc_string. */ | |
170 | static int saved_doc_string_size; | |
171 | /* Length of actual data in saved_doc_string. */ | |
172 | static int saved_doc_string_length; | |
173 | /* This is the file position that string came from. */ | |
68c45bf0 | 174 | static file_offset saved_doc_string_position; |
b2a30870 | 175 | |
c15cfd1f RS |
176 | /* This contains the previous string skipped with #@. |
177 | We copy it from saved_doc_string when a new string | |
178 | is put in saved_doc_string. */ | |
179 | static char *prev_saved_doc_string; | |
180 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
181 | static int prev_saved_doc_string_size; | |
182 | /* Length of actual data in prev_saved_doc_string. */ | |
183 | static int prev_saved_doc_string_length; | |
184 | /* This is the file position that string came from. */ | |
68c45bf0 | 185 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 186 | |
17634846 RS |
187 | /* Nonzero means inside a new-style backquote |
188 | with no surrounding parentheses. | |
189 | Fread initializes this to zero, so we need not specbind it | |
190 | or worry about what happens to it when there is an error. */ | |
191 | static int new_backquote_flag; | |
7ee3bd7b GM |
192 | |
193 | /* A list of file names for files being loaded in Fload. Used to | |
194 | check for recursive loads. */ | |
195 | ||
9942fa0c | 196 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 197 | |
550a625e GM |
198 | /* Non-zero means load dangerous compiled Lisp files. */ |
199 | ||
200 | int load_dangerous_libraries; | |
201 | ||
202 | /* A regular expression used to detect files compiled with Emacs. */ | |
203 | ||
204 | static Lisp_Object Vbytecomp_version_regexp; | |
205 | ||
a742d646 | 206 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 207 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 208 | Lisp_Object (*) (), int, |
4c03c46d | 209 | Lisp_Object, Lisp_Object, |
550a625e GM |
210 | Lisp_Object, Lisp_Object)); |
211 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
212 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
213 | ||
078e7b4a JB |
214 | \f |
215 | /* Handle unreading and rereading of characters. | |
216 | Write READCHAR to read a character, | |
fe0e03f3 KH |
217 | UNREAD(c) to unread c to be read again. |
218 | ||
abb13b09 CW |
219 | The READCHAR and UNREAD macros are meant for reading/unreading a |
220 | byte code; they do not handle multibyte characters. The caller | |
221 | should manage them if necessary. | |
177c0ea7 | 222 | |
abb13b09 CW |
223 | [ Actually that seems to be a lie; READCHAR will definitely read |
224 | multibyte characters from buffer sources, at least. Is the | |
225 | comment just out of date? | |
226 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 227 | */ |
078e7b4a JB |
228 | |
229 | #define READCHAR readchar (readcharfun) | |
230 | #define UNREAD(c) unreadchar (readcharfun, c) | |
231 | ||
232 | static int | |
233 | readchar (readcharfun) | |
234 | Lisp_Object readcharfun; | |
235 | { | |
236 | Lisp_Object tem; | |
95384e1e | 237 | register int c; |
078e7b4a | 238 | |
abb13b09 | 239 | readchar_count++; |
177c0ea7 | 240 | |
cfff016d | 241 | if (BUFFERP (readcharfun)) |
078e7b4a | 242 | { |
bed23cb2 | 243 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 244 | |
bed23cb2 RS |
245 | int pt_byte = BUF_PT_BYTE (inbuffer); |
246 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 247 | |
00a9a935 RS |
248 | if (readchar_backlog > 0) |
249 | /* We get the address of the byte just passed, | |
250 | which is the last byte of the character. | |
251 | The other bytes in this character are consecutive with it, | |
252 | because the gap can't be in the middle of a character. */ | |
253 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
254 | - --readchar_backlog); | |
255 | ||
bed23cb2 RS |
256 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
257 | return -1; | |
078e7b4a | 258 | |
00a9a935 RS |
259 | readchar_backlog = -1; |
260 | ||
bed23cb2 RS |
261 | if (! NILP (inbuffer->enable_multibyte_characters)) |
262 | { | |
00a9a935 | 263 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
264 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
265 | BUF_INC_POS (inbuffer, pt_byte); | |
266 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
267 | } | |
268 | else | |
269 | { | |
270 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
271 | pt_byte++; | |
6f7f43d5 | 272 | } |
bed23cb2 | 273 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 274 | |
bed23cb2 | 275 | return c; |
078e7b4a | 276 | } |
cfff016d | 277 | if (MARKERP (readcharfun)) |
078e7b4a | 278 | { |
bed23cb2 | 279 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 280 | |
bed23cb2 RS |
281 | int bytepos = marker_byte_position (readcharfun); |
282 | int orig_bytepos = bytepos; | |
6f7f43d5 | 283 | |
00a9a935 RS |
284 | if (readchar_backlog > 0) |
285 | /* We get the address of the byte just passed, | |
286 | which is the last byte of the character. | |
287 | The other bytes in this character are consecutive with it, | |
288 | because the gap can't be in the middle of a character. */ | |
289 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
290 | - --readchar_backlog); | |
291 | ||
bed23cb2 RS |
292 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
293 | return -1; | |
6f7f43d5 | 294 | |
00a9a935 RS |
295 | readchar_backlog = -1; |
296 | ||
bed23cb2 RS |
297 | if (! NILP (inbuffer->enable_multibyte_characters)) |
298 | { | |
00a9a935 | 299 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
300 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
301 | BUF_INC_POS (inbuffer, bytepos); | |
302 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
303 | } | |
304 | else | |
305 | { | |
306 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
307 | bytepos++; | |
6f7f43d5 RS |
308 | } |
309 | ||
bed23cb2 RS |
310 | XMARKER (readcharfun)->bytepos = bytepos; |
311 | XMARKER (readcharfun)->charpos++; | |
312 | ||
313 | return c; | |
078e7b4a | 314 | } |
ad0153e4 RS |
315 | |
316 | if (EQ (readcharfun, Qlambda)) | |
317 | return read_bytecode_char (0); | |
318 | ||
078e7b4a | 319 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
320 | { |
321 | c = getc (instream); | |
322 | #ifdef EINTR | |
323 | /* Interrupted reads have been observed while reading over the network */ | |
324 | while (c == EOF && ferror (instream) && errno == EINTR) | |
325 | { | |
495bf630 | 326 | QUIT; |
2c1b5dbe KH |
327 | clearerr (instream); |
328 | c = getc (instream); | |
329 | } | |
330 | #endif | |
331 | return c; | |
332 | } | |
078e7b4a | 333 | |
cfff016d | 334 | if (STRINGP (readcharfun)) |
078e7b4a | 335 | { |
bed23cb2 | 336 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 337 | c = -1; |
f0354c03 | 338 | else |
bed23cb2 RS |
339 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
340 | read_from_string_index, | |
341 | read_from_string_index_byte); | |
6f7f43d5 | 342 | |
078e7b4a JB |
343 | return c; |
344 | } | |
345 | ||
346 | tem = call0 (readcharfun); | |
347 | ||
265a9e55 | 348 | if (NILP (tem)) |
078e7b4a JB |
349 | return -1; |
350 | return XINT (tem); | |
351 | } | |
352 | ||
353 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
354 | If the stream is a user function, call it with the char as argument. */ | |
355 | ||
356 | static void | |
357 | unreadchar (readcharfun, c) | |
358 | Lisp_Object readcharfun; | |
359 | int c; | |
360 | { | |
abb13b09 | 361 | readchar_count--; |
92fddec9 KH |
362 | if (c == -1) |
363 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
364 | since readchar didn't advance it when we read it. */ | |
365 | ; | |
cfff016d | 366 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 367 | { |
bed23cb2 RS |
368 | struct buffer *b = XBUFFER (readcharfun); |
369 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 370 | |
00a9a935 RS |
371 | if (readchar_backlog >= 0) |
372 | readchar_backlog++; | |
bed23cb2 | 373 | else |
00a9a935 RS |
374 | { |
375 | BUF_PT (b)--; | |
376 | if (! NILP (b->enable_multibyte_characters)) | |
377 | BUF_DEC_POS (b, bytepos); | |
378 | else | |
379 | bytepos--; | |
d7760ca9 | 380 | |
00a9a935 RS |
381 | BUF_PT_BYTE (b) = bytepos; |
382 | } | |
d7760ca9 | 383 | } |
cfff016d | 384 | else if (MARKERP (readcharfun)) |
d7760ca9 | 385 | { |
bed23cb2 RS |
386 | struct buffer *b = XMARKER (readcharfun)->buffer; |
387 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 388 | |
00a9a935 RS |
389 | if (readchar_backlog >= 0) |
390 | readchar_backlog++; | |
bed23cb2 | 391 | else |
00a9a935 RS |
392 | { |
393 | XMARKER (readcharfun)->charpos--; | |
394 | if (! NILP (b->enable_multibyte_characters)) | |
395 | BUF_DEC_POS (b, bytepos); | |
396 | else | |
397 | bytepos--; | |
d7760ca9 | 398 | |
00a9a935 RS |
399 | XMARKER (readcharfun)->bytepos = bytepos; |
400 | } | |
d7760ca9 | 401 | } |
cfff016d | 402 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
403 | { |
404 | read_from_string_index--; | |
405 | read_from_string_index_byte | |
406 | = string_char_to_byte (readcharfun, read_from_string_index); | |
407 | } | |
ad0153e4 RS |
408 | else if (EQ (readcharfun, Qlambda)) |
409 | read_bytecode_char (1); | |
078e7b4a JB |
410 | else if (EQ (readcharfun, Qget_file_char)) |
411 | ungetc (c, instream); | |
412 | else | |
413 | call1 (readcharfun, make_number (c)); | |
414 | } | |
415 | ||
abb13b09 CW |
416 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
417 | Lisp_Object)); | |
418 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 419 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
420 | |
421 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
422 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
423 | static int read_multibyte P_ ((int, Lisp_Object)); | |
424 | ||
425 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
426 | Lisp_Object)); | |
427 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
428 | Lisp_Object)); | |
429 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 430 | |
078e7b4a | 431 | \f |
bed23cb2 | 432 | /* Get a character from the tty. */ |
078e7b4a | 433 | |
3d9b22be JB |
434 | extern Lisp_Object read_char (); |
435 | ||
f42be754 JB |
436 | /* Read input events until we get one that's acceptable for our purposes. |
437 | ||
438 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
439 | until we get a character we like, and then stuffed into | |
440 | unread_switch_frame. | |
441 | ||
442 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
443 | if the unmodified version of the symbol has a Qascii_character | |
444 | property, and use that character, if present. | |
445 | ||
446 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
447 | get isn't an ASCII character with modifiers. If it's zero but | |
448 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
449 | character. |
450 | ||
451 | If INPUT_METHOD is nonzero, we invoke the current input method | |
452 | if the character warrants that. */ | |
cc39bc38 | 453 | |
f42be754 | 454 | Lisp_Object |
bb49a192 RS |
455 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
456 | input_method) | |
457 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 458 | { |
153a17b7 KH |
459 | register Lisp_Object val, delayed_switch_frame; |
460 | ||
5dbf89bc | 461 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
462 | if (display_hourglass_p) |
463 | cancel_hourglass (); | |
5dbf89bc | 464 | #endif |
177c0ea7 | 465 | |
153a17b7 | 466 | delayed_switch_frame = Qnil; |
f42be754 JB |
467 | |
468 | /* Read until we get an acceptable event. */ | |
469 | retry: | |
bb49a192 RS |
470 | val = read_char (0, 0, 0, |
471 | (input_method ? Qnil : Qt), | |
472 | 0); | |
f42be754 | 473 | |
cfff016d | 474 | if (BUFFERP (val)) |
6c82d689 KH |
475 | goto retry; |
476 | ||
f42be754 | 477 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 478 | character. This is better than signaling an error just because |
f42be754 JB |
479 | the last characters were typed to a separate minibuffer frame, |
480 | for example. Eventually, some code which can deal with | |
481 | switch-frame events will read it and process it. */ | |
482 | if (no_switch_frame | |
483 | && EVENT_HAS_PARAMETERS (val) | |
484 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
485 | { | |
486 | delayed_switch_frame = val; | |
487 | goto retry; | |
488 | } | |
489 | ||
490 | if (ascii_required) | |
491 | { | |
492 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 493 | if (SYMBOLP (val)) |
f42be754 | 494 | { |
95384e1e | 495 | Lisp_Object tem, tem1; |
f42be754 JB |
496 | tem = Fget (val, Qevent_symbol_element_mask); |
497 | if (!NILP (tem)) | |
498 | { | |
499 | tem1 = Fget (Fcar (tem), Qascii_character); | |
500 | /* Merge this symbol's modifier bits | |
501 | with the ASCII equivalent of its basic code. */ | |
502 | if (!NILP (tem1)) | |
baf69866 | 503 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
504 | } |
505 | } | |
177c0ea7 | 506 | |
f42be754 | 507 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 508 | if (!INTEGERP (val)) |
f42be754 JB |
509 | { |
510 | if (error_nonascii) | |
511 | { | |
1ec84625 | 512 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
513 | error ("Non-character input-event"); |
514 | } | |
515 | else | |
516 | goto retry; | |
517 | } | |
518 | } | |
519 | ||
520 | if (! NILP (delayed_switch_frame)) | |
521 | unread_switch_frame = delayed_switch_frame; | |
522 | ||
67868d27 PJ |
523 | #if 0 |
524 | ||
5dbf89bc | 525 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
526 | if (display_hourglass_p) |
527 | start_hourglass (); | |
5dbf89bc | 528 | #endif |
67868d27 PJ |
529 | |
530 | #endif | |
531 | ||
f42be754 | 532 | return val; |
f42be754 JB |
533 | } |
534 | ||
bb49a192 | 535 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
5de38842 PJ |
536 | doc: /* Read a character from the command input (keyboard or macro). |
537 | It is returned as a number. | |
538 | If the user generates an event which is not a character (i.e. a mouse | |
539 | click or function key event), `read-char' signals an error. As an | |
540 | exception, switch-frame events are put off until non-ASCII events can | |
541 | be read. | |
542 | If you want to read non-character events, or ignore them, call | |
543 | `read-event' or `read-char-exclusive' instead. | |
544 | ||
545 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
546 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
547 | input method is turned on in the current buffer, that input method | |
548 | is used for reading a character. */) | |
549 | (prompt, inherit_input_method) | |
fc351d2f | 550 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 551 | { |
bb49a192 RS |
552 | if (! NILP (prompt)) |
553 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 554 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
555 | } |
556 | ||
bb49a192 | 557 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
5de38842 PJ |
558 | doc: /* Read an event object from the input stream. |
559 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
560 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
561 | input method is turned on in the current buffer, that input method | |
562 | is used for reading a character. */) | |
563 | (prompt, inherit_input_method) | |
fc351d2f | 564 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 565 | { |
bb49a192 RS |
566 | if (! NILP (prompt)) |
567 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 568 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
569 | } |
570 | ||
bb49a192 | 571 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
5de38842 PJ |
572 | doc: /* Read a character from the command input (keyboard or macro). |
573 | It is returned as a number. Non-character events are ignored. | |
574 | ||
575 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
576 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
577 | input method is turned on in the current buffer, that input method | |
578 | is used for reading a character. */) | |
579 | (prompt, inherit_input_method) | |
fc351d2f | 580 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 581 | { |
bb49a192 RS |
582 | if (! NILP (prompt)) |
583 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 584 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 585 | } |
078e7b4a JB |
586 | |
587 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
588 | doc: /* Don't use this yourself. */) |
589 | () | |
078e7b4a JB |
590 | { |
591 | register Lisp_Object val; | |
1805de4f | 592 | XSETINT (val, getc (instream)); |
078e7b4a JB |
593 | return val; |
594 | } | |
da84f340 GM |
595 | |
596 | ||
550a625e | 597 | \f |
da84f340 GM |
598 | /* Value is non-zero if the file asswociated with file descriptor FD |
599 | is a compiled Lisp file that's safe to load. Only files compiled | |
600 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
601 | to a crash in Fbyte_code because of an incompatible change in the | |
602 | byte compiler. */ | |
603 | ||
604 | static int | |
605 | safe_to_load_p (fd) | |
606 | int fd; | |
607 | { | |
608 | char buf[512]; | |
609 | int nbytes, i; | |
610 | int safe_p = 1; | |
611 | ||
612 | /* Read the first few bytes from the file, and look for a line | |
613 | specifying the byte compiler version used. */ | |
614 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
615 | if (nbytes > 0) | |
616 | { | |
617 | buf[nbytes] = '\0'; | |
618 | ||
619 | /* Skip to the next newline, skipping over the initial `ELC' | |
620 | with NUL bytes following it. */ | |
621 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
622 | ; | |
623 | ||
624 | if (i < nbytes | |
625 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
626 | buf + i) < 0) | |
627 | safe_p = 0; | |
628 | } | |
629 | ||
630 | lseek (fd, 0, SEEK_SET); | |
631 | return safe_p; | |
632 | } | |
633 | ||
634 | ||
7ee3bd7b GM |
635 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
636 | after loading a file successfully. */ | |
637 | ||
638 | static Lisp_Object | |
639 | record_load_unwind (old) | |
640 | Lisp_Object old; | |
641 | { | |
642 | return Vloads_in_progress = old; | |
643 | } | |
644 | ||
164c8bfe RS |
645 | /* This handler function is used via internal_condition_case_1. */ |
646 | ||
647 | static Lisp_Object | |
648 | load_error_handler (data) | |
649 | Lisp_Object data; | |
650 | { | |
651 | return Qnil; | |
652 | } | |
7ee3bd7b | 653 | |
f0a50954 | 654 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
655 | doc: /* Execute a file of Lisp code named FILE. |
656 | First try FILE with `.elc' appended, then try with `.el', | |
d77b70e5 MR |
657 | then try FILE unmodified (the exact suffixes are determined by |
658 | `load-suffixes'). Environment variable references in FILE | |
5de38842 PJ |
659 | are replaced with their values by calling `substitute-in-file-name'. |
660 | This function searches the directories in `load-path'. | |
661 | If optional second arg NOERROR is non-nil, | |
662 | report no error if FILE doesn't exist. | |
663 | Print messages at start and end of loading unless | |
664 | optional third arg NOMESSAGE is non-nil. | |
665 | If optional fourth arg NOSUFFIX is non-nil, don't try adding | |
666 | suffixes `.elc' or `.el' to the specified name FILE. | |
667 | If optional fifth arg MUST-SUFFIX is non-nil, insist on | |
668 | the suffix `.elc' or `.el'; don't accept just FILE unless | |
669 | it ends in one of those suffixes or includes a directory name. | |
670 | Return t if file exists. */) | |
671 | (file, noerror, nomessage, nosuffix, must_suffix) | |
f0a50954 | 672 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
673 | { |
674 | register FILE *stream; | |
675 | register int fd = -1; | |
676 | register Lisp_Object lispstream; | |
aed13378 | 677 | int count = SPECPDL_INDEX (); |
078e7b4a JB |
678 | Lisp_Object temp; |
679 | struct gcpro gcpro1; | |
eb191db2 | 680 | Lisp_Object found, efound; |
04fc68e7 RS |
681 | /* 1 means we printed the ".el is newer" message. */ |
682 | int newer = 0; | |
683 | /* 1 means we are loading a compiled file. */ | |
684 | int compiled = 0; | |
c2225d00 | 685 | Lisp_Object handler; |
456c67a4 | 686 | int safe_p = 1; |
229ba775 | 687 | char *fmode = "r"; |
317073d5 | 688 | #ifdef DOS_NT |
229ba775 | 689 | fmode = "rt"; |
317073d5 | 690 | #endif /* DOS_NT */ |
078e7b4a | 691 | |
b7826503 | 692 | CHECK_STRING (file); |
078e7b4a | 693 | |
c2225d00 | 694 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
695 | /* This shouldn't be necessary any more now that `openp' handles it right. |
696 | handler = Ffind_file_name_handler (file, Qload); | |
697 | if (!NILP (handler)) | |
698 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 699 | |
07a0bda3 RS |
700 | /* Do this after the handler to avoid |
701 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
702 | (Below here, we care only whether they are nil or not.) |
703 | The presence of this call is the result of a historical accident: | |
704 | it used to be in every file-operations and when it got removed | |
705 | everywhere, it accidentally stayed here. Since then, enough people | |
706 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
707 | that it seemed risky to remove. */ | |
164c8bfe RS |
708 | if (! NILP (noerror)) |
709 | { | |
710 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
711 | Qt, load_error_handler); | |
712 | if (NILP (file)) | |
713 | return Qnil; | |
714 | } | |
715 | else | |
716 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 717 | |
07a0bda3 | 718 | |
078e7b4a JB |
719 | /* Avoid weird lossage with null string as arg, |
720 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 721 | if (SCHARS (file) > 0) |
078e7b4a | 722 | { |
d5db4077 | 723 | int size = SBYTES (file); |
e61b9b87 | 724 | Lisp_Object tmp[2]; |
211f7dcd | 725 | |
0745dce9 | 726 | GCPRO1 (file); |
211f7dcd RS |
727 | |
728 | if (! NILP (must_suffix)) | |
729 | { | |
730 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
731 | if (size > 3 | |
d5db4077 | 732 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
733 | must_suffix = Qnil; |
734 | else if (size > 4 | |
d5db4077 | 735 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
736 | must_suffix = Qnil; |
737 | /* Don't insist on adding a suffix | |
738 | if the argument includes a directory name. */ | |
739 | else if (! NILP (Ffile_name_directory (file))) | |
740 | must_suffix = Qnil; | |
741 | } | |
742 | ||
f0a50954 | 743 | fd = openp (Vload_path, file, |
e61b9b87 SM |
744 | (!NILP (nosuffix) ? Qnil |
745 | : !NILP (must_suffix) ? Vload_suffixes | |
746 | : Fappend (2, (tmp[0] = Vload_suffixes, | |
747 | tmp[1] = default_suffixes, | |
748 | tmp))), | |
86d00812 | 749 | &found, Qnil); |
5a6e5452 | 750 | UNGCPRO; |
078e7b4a JB |
751 | } |
752 | ||
96dc0f4e | 753 | if (fd == -1) |
078e7b4a | 754 | { |
265a9e55 | 755 | if (NILP (noerror)) |
164c8bfe RS |
756 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), |
757 | Fcons (file, Qnil))); | |
078e7b4a JB |
758 | else |
759 | return Qnil; | |
760 | } | |
761 | ||
ba0d1195 | 762 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
763 | if (EQ (Qt, Vuser_init_file)) |
764 | Vuser_init_file = found; | |
765 | ||
96dc0f4e MB |
766 | /* If FD is -2, that means openp found a magic file. */ |
767 | if (fd == -2) | |
74549846 | 768 | { |
5e24a1f7 KH |
769 | if (NILP (Fequal (found, file))) |
770 | /* If FOUND is a different file name from FILE, | |
771 | find its handler even if we have already inhibited | |
772 | the `load' operation on FILE. */ | |
773 | handler = Ffind_file_name_handler (found, Qt); | |
774 | else | |
775 | handler = Ffind_file_name_handler (found, Qload); | |
776 | if (! NILP (handler)) | |
777 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
778 | } |
779 | ||
550a625e GM |
780 | /* Check if we're stuck in a recursive load cycle. |
781 | ||
782 | 2000-09-21: It's not possible to just check for the file loaded | |
783 | being a member of Vloads_in_progress. This fails because of the | |
784 | way the byte compiler currently works; `provide's are not | |
785 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
786 | leads to a certain amount of ``normal'' recursion. | |
787 | ||
788 | Also, just loading a file recursively is not always an error in | |
789 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
790 | { |
791 | int count = 0; | |
792 | Lisp_Object tem; | |
793 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
794 | if (!NILP (Fequal (found, XCAR (tem)))) | |
795 | count++; | |
796 | if (count > 3) | |
797 | Fsignal (Qerror, Fcons (build_string ("Recursive load"), | |
798 | Fcons (found, Vloads_in_progress))); | |
799 | record_unwind_protect (record_load_unwind, Vloads_in_progress); | |
800 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
801 | } | |
7ee3bd7b | 802 | |
a1c89c0a | 803 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
804 | ".elc", 4)) |
805 | /* Load .elc files directly, but not when they are | |
806 | remote and have no handler! */ | |
078e7b4a | 807 | { |
96dc0f4e | 808 | if (fd != -2) |
da84f340 | 809 | { |
96dc0f4e MB |
810 | struct stat s1, s2; |
811 | int result; | |
da84f340 | 812 | |
96dc0f4e MB |
813 | if (!safe_to_load_p (fd)) |
814 | { | |
815 | safe_p = 0; | |
816 | if (!load_dangerous_libraries) | |
e63304b7 DL |
817 | { |
818 | if (fd >= 0) | |
819 | emacs_close (fd); | |
820 | error ("File `%s' was not compiled in Emacs", | |
821 | SDATA (found)); | |
822 | } | |
96dc0f4e MB |
823 | else if (!NILP (nomessage)) |
824 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
825 | } | |
04fc68e7 | 826 | |
96dc0f4e MB |
827 | compiled = 1; |
828 | ||
eb191db2 EZ |
829 | GCPRO1 (efound); |
830 | efound = ENCODE_FILE (found); | |
831 | ||
26fbf20b | 832 | #ifdef DOS_NT |
96dc0f4e | 833 | fmode = "rb"; |
26fbf20b | 834 | #endif /* DOS_NT */ |
d5db4077 | 835 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 836 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 837 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 838 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 EZ |
839 | UNGCPRO; |
840 | ||
96dc0f4e MB |
841 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
842 | { | |
843 | /* Make the progress messages mention that source is newer. */ | |
844 | newer = 1; | |
04fc68e7 | 845 | |
96dc0f4e | 846 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
847 | if (!NILP (nomessage)) |
848 | { | |
849 | Lisp_Object file; | |
850 | file = Fsubstring (found, make_number (0), make_number (-1)); | |
851 | message_with_string ("Source file `%s' newer than byte-compiled file", | |
c33ef7c4 | 852 | file, 1); |
714d8c39 | 853 | } |
96dc0f4e | 854 | } |
51ac6f83 | 855 | } |
078e7b4a | 856 | } |
fe0e03f3 KH |
857 | else |
858 | { | |
859 | /* We are loading a source file (*.el). */ | |
860 | if (!NILP (Vload_source_file_function)) | |
861 | { | |
7ee3bd7b | 862 | Lisp_Object val; |
96dc0f4e MB |
863 | |
864 | if (fd >= 0) | |
68c45bf0 | 865 | emacs_close (fd); |
7ee3bd7b GM |
866 | val = call4 (Vload_source_file_function, found, file, |
867 | NILP (noerror) ? Qnil : Qt, | |
868 | NILP (nomessage) ? Qnil : Qt); | |
869 | return unbind_to (count, val); | |
fe0e03f3 KH |
870 | } |
871 | } | |
078e7b4a | 872 | |
229ba775 | 873 | #ifdef WINDOWSNT |
68c45bf0 | 874 | emacs_close (fd); |
eb191db2 EZ |
875 | GCPRO1 (efound); |
876 | efound = ENCODE_FILE (found); | |
d5db4077 | 877 | stream = fopen ((char *) SDATA (efound), fmode); |
eb191db2 | 878 | UNGCPRO; |
229ba775 EZ |
879 | #else /* not WINDOWSNT */ |
880 | stream = fdopen (fd, fmode); | |
881 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
882 | if (stream == 0) |
883 | { | |
68c45bf0 | 884 | emacs_close (fd); |
d5db4077 | 885 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
886 | } |
887 | ||
4b104c41 RS |
888 | if (! NILP (Vpurify_flag)) |
889 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
890 | ||
04fc68e7 RS |
891 | if (NILP (nomessage)) |
892 | { | |
da84f340 GM |
893 | if (!safe_p) |
894 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
895 | file, 1); | |
896 | else if (!compiled) | |
e28552a4 | 897 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 898 | else if (newer) |
e28552a4 RS |
899 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
900 | file, 1); | |
db5cae4b | 901 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 902 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 903 | } |
078e7b4a | 904 | |
0745dce9 | 905 | GCPRO1 (file); |
838abf56 | 906 | lispstream = Fcons (Qnil, Qnil); |
f5df591a KR |
907 | XSETCARFASTINT (lispstream, (EMACS_UINT)stream >> 16); |
908 | XSETCDRFASTINT (lispstream, (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 909 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 910 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 911 | specbind (Qload_file_name, found); |
74549846 | 912 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
913 | load_descriptor_list |
914 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 915 | load_in_progress++; |
4c03c46d KS |
916 | readevalloop (Qget_file_char, stream, file, Feval, |
917 | 0, Qnil, Qnil, Qnil, Qnil); | |
078e7b4a JB |
918 | unbind_to (count, Qnil); |
919 | ||
920 | /* Run any load-hooks for this file. */ | |
0745dce9 | 921 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 922 | if (!NILP (temp)) |
078e7b4a JB |
923 | Fprogn (Fcdr (temp)); |
924 | UNGCPRO; | |
925 | ||
b2a30870 RS |
926 | if (saved_doc_string) |
927 | free (saved_doc_string); | |
928 | saved_doc_string = 0; | |
929 | saved_doc_string_size = 0; | |
930 | ||
c15cfd1f | 931 | if (prev_saved_doc_string) |
3cb65b0e | 932 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
933 | prev_saved_doc_string = 0; |
934 | prev_saved_doc_string_size = 0; | |
935 | ||
265a9e55 | 936 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 937 | { |
da84f340 GM |
938 | if (!safe_p) |
939 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
940 | file, 1); | |
941 | else if (!compiled) | |
e28552a4 | 942 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 943 | else if (newer) |
e28552a4 RS |
944 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
945 | file, 1); | |
db5cae4b | 946 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 947 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 948 | } |
7ee3bd7b | 949 | |
11810d78 SM |
950 | if (!NILP (Fequal (build_string ("obsolete"), |
951 | Ffile_name_nondirectory | |
952 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
953 | message_with_string ("Package %s is obsolete", file, 1); | |
954 | ||
078e7b4a JB |
955 | return Qt; |
956 | } | |
957 | ||
958 | static Lisp_Object | |
959 | load_unwind (stream) /* used as unwind-protect function in load */ | |
960 | Lisp_Object stream; | |
961 | { | |
c1d497be KR |
962 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
963 | | XFASTINT (XCDR (stream)))); | |
078e7b4a JB |
964 | if (--load_in_progress < 0) load_in_progress = 0; |
965 | return Qnil; | |
966 | } | |
967 | ||
d2c6be7f RS |
968 | static Lisp_Object |
969 | load_descriptor_unwind (oldlist) | |
970 | Lisp_Object oldlist; | |
971 | { | |
972 | load_descriptor_list = oldlist; | |
838abf56 | 973 | return Qnil; |
d2c6be7f RS |
974 | } |
975 | ||
976 | /* Close all descriptors in use for Floads. | |
977 | This is used when starting a subprocess. */ | |
978 | ||
979 | void | |
980 | close_load_descs () | |
981 | { | |
f3849f25 | 982 | #ifndef WINDOWSNT |
d2c6be7f | 983 | Lisp_Object tail; |
c1d497be | 984 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 985 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 986 | #endif |
d2c6be7f | 987 | } |
078e7b4a JB |
988 | \f |
989 | static int | |
990 | complete_filename_p (pathname) | |
991 | Lisp_Object pathname; | |
992 | { | |
4b2dd274 | 993 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 994 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 995 | || (SCHARS (pathname) > 2 |
317073d5 | 996 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
997 | #ifdef ALTOS |
998 | || *s == '@' | |
999 | #endif | |
1000 | #ifdef VMS | |
1001 | || index (s, ':') | |
1002 | #endif /* VMS */ | |
1003 | ); | |
1004 | } | |
1005 | ||
86d00812 SM |
1006 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1007 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1008 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1009 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1010 | file name when searching. | |
1011 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1012 | PREDICATE can also be an integer to pass to the access(2) function, | |
1013 | in which case file-name-handlers are ignored. */) | |
1014 | (filename, path, suffixes, predicate) | |
1015 | Lisp_Object filename, path, suffixes, predicate; | |
1016 | { | |
1017 | Lisp_Object file; | |
1018 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1019 | if (NILP (predicate) && fd > 0) | |
1020 | close (fd); | |
1021 | return file; | |
1022 | } | |
1023 | ||
1024 | ||
078e7b4a JB |
1025 | /* Search for a file whose name is STR, looking in directories |
1026 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1027 | On success, returns a file descriptor. On failure, returns -1. |
1028 | ||
e61b9b87 SM |
1029 | SUFFIXES is a list of strings containing possible suffixes. |
1030 | The empty suffix is automatically added iff the list is empty. | |
1031 | ||
86d00812 SM |
1032 | PREDICATE non-nil means don't open the files, |
1033 | just look for one that satisfies the predicate. In this case, | |
1034 | returns 1 on success. The predicate can be a lisp function or | |
1035 | an integer to pass to `access' (in which case file-name-handlers | |
1036 | are ignored). | |
078e7b4a JB |
1037 | |
1038 | If STOREPTR is nonzero, it points to a slot where the name of | |
1039 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1040 | nil is stored there on failure. |
1041 | ||
96dc0f4e | 1042 | If the file we find is remote, return -2 |
86d00812 | 1043 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1044 | |
1045 | int | |
86d00812 | 1046 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1047 | Lisp_Object path, str; |
e61b9b87 | 1048 | Lisp_Object suffixes; |
078e7b4a | 1049 | Lisp_Object *storeptr; |
86d00812 | 1050 | Lisp_Object predicate; |
078e7b4a JB |
1051 | { |
1052 | register int fd; | |
1053 | int fn_size = 100; | |
1054 | char buf[100]; | |
1055 | register char *fn = buf; | |
1056 | int absolute = 0; | |
1057 | int want_size; | |
74549846 | 1058 | Lisp_Object filename; |
078e7b4a | 1059 | struct stat st; |
eb191db2 EZ |
1060 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1061 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1062 | int max_suffix_len = 0; |
1063 | ||
6f8eafd1 SM |
1064 | CHECK_STRING (str); |
1065 | ||
e61b9b87 SM |
1066 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1067 | { | |
f5df591a | 1068 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1069 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1070 | SBYTES (XCAR (tail))); |
e61b9b87 | 1071 | } |
078e7b4a | 1072 | |
990ff03c | 1073 | string = filename = Qnil; |
eb191db2 EZ |
1074 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1075 | ||
078e7b4a JB |
1076 | if (storeptr) |
1077 | *storeptr = Qnil; | |
1078 | ||
1079 | if (complete_filename_p (str)) | |
1080 | absolute = 1; | |
1081 | ||
e61b9b87 | 1082 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1083 | { |
e61b9b87 | 1084 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1085 | if (!complete_filename_p (filename)) |
1086 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1087 | /* Of course, this could conceivably lose if luser sets | |
1088 | default-directory to be something non-absolute... */ | |
1089 | { | |
1090 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1091 | if (!complete_filename_p (filename)) | |
1092 | /* Give up on this path element! */ | |
1093 | continue; | |
1094 | } | |
1095 | ||
1096 | /* Calculate maximum size of any filename made from | |
1097 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1098 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1099 | if (fn_size < want_size) |
1100 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1101 | ||
078e7b4a | 1102 | /* Loop over suffixes. */ |
e61b9b87 SM |
1103 | for (tail = NILP (suffixes) ? default_suffixes : suffixes; |
1104 | CONSP (tail); tail = XCDR (tail)) | |
078e7b4a | 1105 | { |
d5db4077 | 1106 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1107 | Lisp_Object handler; |
eb191db2 | 1108 | int exists; |
078e7b4a | 1109 | |
c49afcd7 RS |
1110 | /* Concatenate path element/specified name with the suffix. |
1111 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1112 | if (SCHARS (filename) > 2 |
1113 | && SREF (filename, 0) == '/' | |
1114 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1115 | { |
d5db4077 KR |
1116 | strncpy (fn, SDATA (filename) + 2, |
1117 | SBYTES (filename) - 2); | |
1118 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1119 | } |
1120 | else | |
1121 | { | |
d5db4077 KR |
1122 | strncpy (fn, SDATA (filename), |
1123 | SBYTES (filename)); | |
1124 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1125 | } |
1126 | ||
078e7b4a | 1127 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1128 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1129 | |
74549846 | 1130 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1131 | /* We used to only check for handlers on non-absolute file names: |
1132 | if (absolute) | |
1133 | handler = Qnil; | |
1134 | else | |
1135 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1136 | It's not clear why that was the case and it breaks things like | |
1137 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1138 | string = build_string (fn); |
4773b8ca | 1139 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1140 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1141 | { | |
1142 | if (NILP (predicate)) | |
1143 | exists = !NILP (Ffile_readable_p (string)); | |
1144 | else | |
1145 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1146 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1147 | exists = 0; |
1148 | ||
1149 | if (exists) | |
078e7b4a JB |
1150 | { |
1151 | /* We succeeded; return this descriptor and filename. */ | |
1152 | if (storeptr) | |
eb191db2 | 1153 | *storeptr = string; |
5ef2a3c0 | 1154 | UNGCPRO; |
96dc0f4e | 1155 | return -2; |
74549846 RS |
1156 | } |
1157 | } | |
1158 | else | |
1159 | { | |
4b2dd274 | 1160 | const char *pfn; |
eb191db2 EZ |
1161 | |
1162 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1163 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1164 | exists = (stat (pfn, &st) >= 0 |
1165 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1166 | if (exists) |
1167 | { | |
1168 | /* Check that we can access or open it. */ | |
86d00812 SM |
1169 | if (NATNUMP (predicate)) |
1170 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1171 | else |
eb191db2 | 1172 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1173 | |
1174 | if (fd >= 0) | |
1175 | { | |
1176 | /* We succeeded; return this descriptor and filename. */ | |
1177 | if (storeptr) | |
eb191db2 | 1178 | *storeptr = string; |
74549846 RS |
1179 | UNGCPRO; |
1180 | return fd; | |
1181 | } | |
078e7b4a JB |
1182 | } |
1183 | } | |
078e7b4a | 1184 | } |
5a6e5452 | 1185 | if (absolute) |
5ef2a3c0 | 1186 | break; |
078e7b4a JB |
1187 | } |
1188 | ||
5ef2a3c0 KH |
1189 | UNGCPRO; |
1190 | return -1; | |
078e7b4a JB |
1191 | } |
1192 | ||
1193 | \f | |
ae321d28 RS |
1194 | /* Merge the list we've accumulated of globals from the current input source |
1195 | into the load_history variable. The details depend on whether | |
1196 | the source has an associated file name or not. */ | |
1197 | ||
1198 | static void | |
1199 | build_load_history (stream, source) | |
1200 | FILE *stream; | |
1201 | Lisp_Object source; | |
1202 | { | |
1203 | register Lisp_Object tail, prev, newelt; | |
1204 | register Lisp_Object tem, tem2; | |
1205 | register int foundit, loading; | |
1206 | ||
1207 | loading = stream || !NARROWED; | |
1208 | ||
1209 | tail = Vload_history; | |
1210 | prev = Qnil; | |
1211 | foundit = 0; | |
86d00812 | 1212 | while (CONSP (tail)) |
ae321d28 | 1213 | { |
86d00812 | 1214 | tem = XCAR (tail); |
ae321d28 RS |
1215 | |
1216 | /* Find the feature's previous assoc list... */ | |
1217 | if (!NILP (Fequal (source, Fcar (tem)))) | |
1218 | { | |
1219 | foundit = 1; | |
1220 | ||
1221 | /* If we're loading, remove it. */ | |
1222 | if (loading) | |
86d00812 | 1223 | { |
ae321d28 | 1224 | if (NILP (prev)) |
86d00812 | 1225 | Vload_history = XCDR (tail); |
ae321d28 | 1226 | else |
86d00812 | 1227 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1228 | } |
1229 | ||
1230 | /* Otherwise, cons on new symbols that are not already members. */ | |
1231 | else | |
1232 | { | |
1233 | tem2 = Vcurrent_load_list; | |
1234 | ||
1235 | while (CONSP (tem2)) | |
1236 | { | |
86d00812 | 1237 | newelt = XCAR (tem2); |
ae321d28 | 1238 | |
d642e4f9 | 1239 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1240 | Fsetcar (tail, Fcons (XCAR (tem), |
1241 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1242 | |
86d00812 | 1243 | tem2 = XCDR (tem2); |
ae321d28 RS |
1244 | QUIT; |
1245 | } | |
1246 | } | |
1247 | } | |
1248 | else | |
1249 | prev = tail; | |
86d00812 | 1250 | tail = XCDR (tail); |
ae321d28 RS |
1251 | QUIT; |
1252 | } | |
1253 | ||
8a1f1537 RS |
1254 | /* If we're loading, cons the new assoc onto the front of load-history, |
1255 | the most-recently-loaded position. Also do this if we didn't find | |
1256 | an existing member for the current source. */ | |
1257 | if (loading || !foundit) | |
1258 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
1259 | Vload_history); | |
ae321d28 RS |
1260 | } |
1261 | ||
078e7b4a | 1262 | Lisp_Object |
232ccf27 DL |
1263 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1264 | Lisp_Object junk; | |
078e7b4a JB |
1265 | { |
1266 | read_pure = 0; | |
1267 | return Qnil; | |
1268 | } | |
1269 | ||
94e554db RS |
1270 | static Lisp_Object |
1271 | readevalloop_1 (old) | |
1272 | Lisp_Object old; | |
1273 | { | |
1274 | load_convert_to_unibyte = ! NILP (old); | |
1275 | return Qnil; | |
1276 | } | |
1277 | ||
9c97398c GM |
1278 | /* Signal an `end-of-file' error, if possible with file name |
1279 | information. */ | |
1280 | ||
1281 | static void | |
1282 | end_of_file_error () | |
1283 | { | |
1284 | Lisp_Object data; | |
1285 | ||
1286 | if (STRINGP (Vload_file_name)) | |
1287 | data = Fcons (Vload_file_name, Qnil); | |
1288 | else | |
1289 | data = Qnil; | |
1290 | ||
1291 | Fsignal (Qend_of_file, data); | |
1292 | } | |
1293 | ||
94e554db | 1294 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1295 | for this invocation. |
4c03c46d KS |
1296 | READFUN, if non-nil, is used instead of `read'. |
1297 | START, END is region in current buffer (from eval-region). */ | |
94e554db | 1298 | |
078e7b4a | 1299 | static void |
4c03c46d KS |
1300 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1301 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1302 | Lisp_Object readcharfun; |
ae321d28 RS |
1303 | FILE *stream; |
1304 | Lisp_Object sourcename; | |
078e7b4a JB |
1305 | Lisp_Object (*evalfun) (); |
1306 | int printflag; | |
976350af | 1307 | Lisp_Object unibyte, readfun; |
4c03c46d | 1308 | Lisp_Object start, end; |
078e7b4a JB |
1309 | { |
1310 | register int c; | |
1311 | register Lisp_Object val; | |
aed13378 | 1312 | int count = SPECPDL_INDEX (); |
8a1f1537 | 1313 | struct gcpro gcpro1; |
49cf7ff4 | 1314 | struct buffer *b = 0; |
f38952fe | 1315 | int continue_reading_p; |
49cf7ff4 RS |
1316 | |
1317 | if (BUFFERP (readcharfun)) | |
1318 | b = XBUFFER (readcharfun); | |
1319 | else if (MARKERP (readcharfun)) | |
1320 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
1321 | |
1322 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 1323 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1324 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1325 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1326 | |
00a9a935 | 1327 | readchar_backlog = -1; |
6f7f43d5 | 1328 | |
8a1f1537 | 1329 | GCPRO1 (sourcename); |
ae321d28 | 1330 | |
ae321d28 RS |
1331 | LOADHIST_ATTACH (sourcename); |
1332 | ||
f38952fe GM |
1333 | continue_reading_p = 1; |
1334 | while (continue_reading_p) | |
078e7b4a | 1335 | { |
4c03c46d KS |
1336 | int count1 = SPECPDL_INDEX (); |
1337 | ||
49cf7ff4 RS |
1338 | if (b != 0 && NILP (b->name)) |
1339 | error ("Reading from killed buffer"); | |
1340 | ||
4c03c46d KS |
1341 | if (!NILP (start)) |
1342 | { | |
1343 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1344 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1345 | Fgoto_char (start); | |
1346 | Fnarrow_to_region (make_number (BEGV), end); | |
1347 | } | |
1348 | ||
078e7b4a | 1349 | instream = stream; |
4c03c46d | 1350 | read_next: |
078e7b4a JB |
1351 | c = READCHAR; |
1352 | if (c == ';') | |
1353 | { | |
1354 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1355 | goto read_next; |
1356 | } | |
1357 | if (c < 0) | |
1358 | { | |
1359 | unbind_to (count1, Qnil); | |
1360 | break; | |
078e7b4a | 1361 | } |
6069d957 RS |
1362 | |
1363 | /* Ignore whitespace here, so we can detect eof. */ | |
1364 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1365 | goto read_next; |
078e7b4a | 1366 | |
265a9e55 | 1367 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1368 | { |
1369 | record_unwind_protect (unreadpure, Qnil); | |
1370 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1371 | } |
1372 | else | |
1373 | { | |
1374 | UNREAD (c); | |
4ad679f9 | 1375 | read_objects = Qnil; |
f38952fe GM |
1376 | if (!NILP (readfun)) |
1377 | { | |
1378 | val = call1 (readfun, readcharfun); | |
1379 | ||
1380 | /* If READCHARFUN has set point to ZV, we should | |
1381 | stop reading, even if the form read sets point | |
1382 | to a different value when evaluated. */ | |
1383 | if (BUFFERP (readcharfun)) | |
1384 | { | |
1385 | struct buffer *b = XBUFFER (readcharfun); | |
1386 | if (BUF_PT (b) == BUF_ZV (b)) | |
1387 | continue_reading_p = 0; | |
1388 | } | |
1389 | } | |
976350af | 1390 | else if (! NILP (Vload_read_function)) |
84a15045 | 1391 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1392 | else |
abb13b09 | 1393 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1394 | } |
1395 | ||
4c03c46d KS |
1396 | if (!NILP (start) && continue_reading_p) |
1397 | start = Fpoint_marker (); | |
1398 | unbind_to (count1, Qnil); | |
1399 | ||
078e7b4a | 1400 | val = (*evalfun) (val); |
f38952fe | 1401 | |
078e7b4a JB |
1402 | if (printflag) |
1403 | { | |
1404 | Vvalues = Fcons (val, Vvalues); | |
1405 | if (EQ (Vstandard_output, Qt)) | |
1406 | Fprin1 (val, Qnil); | |
1407 | else | |
1408 | Fprint (val, Qnil); | |
1409 | } | |
1410 | } | |
1411 | ||
ae321d28 | 1412 | build_load_history (stream, sourcename); |
ae321d28 RS |
1413 | UNGCPRO; |
1414 | ||
078e7b4a JB |
1415 | unbind_to (count, Qnil); |
1416 | } | |
1417 | ||
1076254d | 1418 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1419 | doc: /* Execute the current buffer as Lisp code. |
1420 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1421 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1422 | PRINTFLAG controls printing of output: | |
1423 | nil means discard it; anything else is stream for print. | |
1424 | ||
1425 | If the optional third argument FILENAME is non-nil, | |
1426 | it specifies the file name to use for `load-history'. | |
1427 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1428 | for this invocation. | |
1429 | ||
3f9ab804 | 1430 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1431 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1432 | ||
1433 | This function preserves the position of point. */) | |
1434 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1435 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1436 | { |
aed13378 | 1437 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1438 | Lisp_Object tem, buf; |
1439 | ||
9391b698 | 1440 | if (NILP (buffer)) |
228d4b1c JA |
1441 | buf = Fcurrent_buffer (); |
1442 | else | |
9391b698 | 1443 | buf = Fget_buffer (buffer); |
dfdb645c | 1444 | if (NILP (buf)) |
13febd85 | 1445 | error ("No such buffer"); |
228d4b1c | 1446 | |
1076254d | 1447 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1448 | tem = Qsymbolp; |
1449 | else | |
1450 | tem = printflag; | |
13febd85 RS |
1451 | |
1452 | if (NILP (filename)) | |
1453 | filename = XBUFFER (buf)->filename; | |
1454 | ||
228d4b1c JA |
1455 | specbind (Qstandard_output, tem); |
1456 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1457 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1458 | readevalloop (buf, 0, filename, Feval, |
1459 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1460 | unbind_to (count, Qnil); |
228d4b1c JA |
1461 | |
1462 | return Qnil; | |
1463 | } | |
1464 | ||
976350af | 1465 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1466 | doc: /* Execute the region as Lisp code. |
1467 | When called from programs, expects two arguments, | |
1468 | giving starting and ending indices in the current buffer | |
1469 | of the text to be executed. | |
1470 | Programs can pass third argument PRINTFLAG which controls output: | |
1471 | nil means discard it; anything else is stream for printing it. | |
1472 | Also the fourth argument READ-FUNCTION, if non-nil, is used | |
1473 | instead of `read' to read each expression. It gets one argument | |
1474 | which is the input stream for reading characters. | |
1475 | ||
1476 | This function does not move point. */) | |
1477 | (start, end, printflag, read_function) | |
976350af | 1478 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1479 | { |
aed13378 | 1480 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1481 | Lisp_Object tem, cbuf; |
1482 | ||
1483 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1484 | |
265a9e55 | 1485 | if (NILP (printflag)) |
078e7b4a JB |
1486 | tem = Qsymbolp; |
1487 | else | |
1488 | tem = printflag; | |
1489 | specbind (Qstandard_output, tem); | |
1490 | ||
4c03c46d | 1491 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1492 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1493 | !NILP (printflag), Qnil, read_function, |
1494 | start, end); | |
078e7b4a JB |
1495 | |
1496 | return unbind_to (count, Qnil); | |
1497 | } | |
1498 | ||
078e7b4a JB |
1499 | \f |
1500 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1501 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1502 | If STREAM is nil, use the value of `standard-input' (which see). | |
1503 | STREAM or the value of `standard-input' may be: | |
1504 | a buffer (read from point and advance it) | |
1505 | a marker (read from where it points and advance it) | |
1506 | a function (call it with no arguments for each character, | |
1507 | call it with a char as argument to push a char back) | |
1508 | a string (takes text from string, starting at the beginning) | |
1509 | t (read text line using minibuffer and use it, or read from | |
1510 | standard input in batch mode). */) | |
1511 | (stream) | |
5be02dff | 1512 | Lisp_Object stream; |
078e7b4a | 1513 | { |
5be02dff KH |
1514 | if (NILP (stream)) |
1515 | stream = Vstandard_input; | |
1516 | if (EQ (stream, Qt)) | |
1517 | stream = Qread_char; | |
5be02dff | 1518 | if (EQ (stream, Qread_char)) |
078e7b4a | 1519 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1520 | |
abb13b09 | 1521 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1522 | } |
1523 | ||
1524 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1525 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1526 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1527 | START and END optionally delimit a substring of STRING from which to read; | |
1528 | they default to 0 and (length STRING) respectively. */) | |
1529 | (string, start, end) | |
078e7b4a JB |
1530 | Lisp_Object string, start, end; |
1531 | { | |
2530ceaf | 1532 | Lisp_Object ret; |
b7826503 | 1533 | CHECK_STRING (string); |
2530ceaf CW |
1534 | /* read_internal_start sets read_from_string_index. */ |
1535 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1536 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1537 | } |
078e7b4a | 1538 | |
abb13b09 CW |
1539 | /* Function to set up the global context we need in toplevel read |
1540 | calls. */ | |
1541 | static Lisp_Object | |
1542 | read_internal_start (stream, start, end) | |
1543 | Lisp_Object stream; | |
1544 | Lisp_Object start; /* Only used when stream is a string. */ | |
1545 | Lisp_Object end; /* Only used when stream is a string. */ | |
1546 | { | |
1547 | Lisp_Object retval; | |
078e7b4a | 1548 | |
abb13b09 CW |
1549 | readchar_backlog = -1; |
1550 | readchar_count = 0; | |
17634846 | 1551 | new_backquote_flag = 0; |
4ad679f9 | 1552 | read_objects = Qnil; |
abb13b09 CW |
1553 | if (EQ (Vread_with_symbol_positions, Qt) |
1554 | || EQ (Vread_with_symbol_positions, stream)) | |
1555 | Vread_symbol_positions_list = Qnil; | |
1556 | ||
1557 | if (STRINGP (stream)) | |
1558 | { | |
1559 | int startval, endval; | |
1560 | if (NILP (end)) | |
d5db4077 | 1561 | endval = SCHARS (stream); |
abb13b09 CW |
1562 | else |
1563 | { | |
1564 | CHECK_NUMBER (end); | |
1565 | endval = XINT (end); | |
d5db4077 | 1566 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1567 | args_out_of_range (stream, end); |
1568 | } | |
17634846 | 1569 | |
abb13b09 CW |
1570 | if (NILP (start)) |
1571 | startval = 0; | |
1572 | else | |
1573 | { | |
1574 | CHECK_NUMBER (start); | |
1575 | startval = XINT (start); | |
1576 | if (startval < 0 || startval > endval) | |
1577 | args_out_of_range (stream, start); | |
1578 | } | |
1579 | read_from_string_index = startval; | |
1580 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1581 | read_from_string_limit = endval; | |
1582 | } | |
177c0ea7 | 1583 | |
abb13b09 CW |
1584 | retval = read0 (stream); |
1585 | if (EQ (Vread_with_symbol_positions, Qt) | |
1586 | || EQ (Vread_with_symbol_positions, stream)) | |
1587 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1588 | return retval; | |
078e7b4a JB |
1589 | } |
1590 | \f | |
6428369f KH |
1591 | /* Use this for recursive reads, in contexts where internal tokens |
1592 | are not allowed. */ | |
e28552a4 | 1593 | |
078e7b4a JB |
1594 | static Lisp_Object |
1595 | read0 (readcharfun) | |
1596 | Lisp_Object readcharfun; | |
1597 | { | |
1598 | register Lisp_Object val; | |
e28552a4 | 1599 | int c; |
078e7b4a | 1600 | |
17634846 | 1601 | val = read1 (readcharfun, &c, 0); |
6428369f | 1602 | if (c) |
93d75e4c RS |
1603 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1604 | make_number (c)), | |
e28552a4 | 1605 | Qnil)); |
078e7b4a JB |
1606 | |
1607 | return val; | |
1608 | } | |
1609 | \f | |
1610 | static int read_buffer_size; | |
1611 | static char *read_buffer; | |
1612 | ||
fe0e03f3 KH |
1613 | /* Read multibyte form and return it as a character. C is a first |
1614 | byte of multibyte form, and rest of them are read from | |
1615 | READCHARFUN. */ | |
6f7f43d5 | 1616 | |
fe0e03f3 KH |
1617 | static int |
1618 | read_multibyte (c, readcharfun) | |
1619 | register int c; | |
1620 | Lisp_Object readcharfun; | |
1621 | { | |
1622 | /* We need the actual character code of this multibyte | |
1623 | characters. */ | |
449fea39 | 1624 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1625 | int len = 0; |
0d5e5843 | 1626 | int bytes; |
fe0e03f3 | 1627 | |
abb13b09 CW |
1628 | if (c < 0) |
1629 | return c; | |
1630 | ||
fe0e03f3 KH |
1631 | str[len++] = c; |
1632 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1633 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1634 | { |
1635 | str[len++] = c; | |
1636 | readchar_count--; | |
1637 | } | |
fe0e03f3 | 1638 | UNREAD (c); |
0d5e5843 KH |
1639 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1640 | return STRING_CHAR (str, len); | |
1641 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1642 | but the first one, and return the first byte. */ | |
1643 | while (--len > 0) | |
1644 | UNREAD (str[len]); | |
1645 | return str[0]; | |
fe0e03f3 KH |
1646 | } |
1647 | ||
f6f79b37 RS |
1648 | /* Read a \-escape sequence, assuming we already read the `\'. |
1649 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1650 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1651 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1652 | |
078e7b4a | 1653 | static int |
f6f79b37 | 1654 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1655 | Lisp_Object readcharfun; |
e7fc914b | 1656 | int stringp; |
f6f79b37 | 1657 | int *byterep; |
078e7b4a JB |
1658 | { |
1659 | register int c = READCHAR; | |
f6f79b37 RS |
1660 | |
1661 | *byterep = 0; | |
1662 | ||
078e7b4a JB |
1663 | switch (c) |
1664 | { | |
f3849f25 | 1665 | case -1: |
da3b886d | 1666 | end_of_file_error (); |
f3849f25 | 1667 | |
078e7b4a | 1668 | case 'a': |
265a9e55 | 1669 | return '\007'; |
078e7b4a JB |
1670 | case 'b': |
1671 | return '\b'; | |
f405a585 RS |
1672 | case 'd': |
1673 | return 0177; | |
078e7b4a JB |
1674 | case 'e': |
1675 | return 033; | |
1676 | case 'f': | |
1677 | return '\f'; | |
1678 | case 'n': | |
1679 | return '\n'; | |
1680 | case 'r': | |
1681 | return '\r'; | |
1682 | case 't': | |
1683 | return '\t'; | |
1684 | case 'v': | |
1685 | return '\v'; | |
1686 | case '\n': | |
1687 | return -1; | |
e28552a4 | 1688 | case ' ': |
e7fc914b KH |
1689 | if (stringp) |
1690 | return -1; | |
1691 | return ' '; | |
078e7b4a JB |
1692 | |
1693 | case 'M': | |
1694 | c = READCHAR; | |
1695 | if (c != '-') | |
1696 | error ("Invalid escape character syntax"); | |
1697 | c = READCHAR; | |
1698 | if (c == '\\') | |
f6f79b37 | 1699 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1700 | return c | meta_modifier; |
f405a585 RS |
1701 | |
1702 | case 'S': | |
1703 | c = READCHAR; | |
1704 | if (c != '-') | |
1705 | error ("Invalid escape character syntax"); | |
1706 | c = READCHAR; | |
1707 | if (c == '\\') | |
f6f79b37 | 1708 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1709 | return c | shift_modifier; |
1710 | ||
1711 | case 'H': | |
1712 | c = READCHAR; | |
1713 | if (c != '-') | |
1714 | error ("Invalid escape character syntax"); | |
1715 | c = READCHAR; | |
1716 | if (c == '\\') | |
f6f79b37 | 1717 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1718 | return c | hyper_modifier; |
1719 | ||
1720 | case 'A': | |
1721 | c = READCHAR; | |
1722 | if (c != '-') | |
1723 | error ("Invalid escape character syntax"); | |
1724 | c = READCHAR; | |
1725 | if (c == '\\') | |
f6f79b37 | 1726 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1727 | return c | alt_modifier; |
1728 | ||
1729 | case 's': | |
37cd4238 KS |
1730 | if (stringp) |
1731 | return ' '; | |
7bd279cd | 1732 | c = READCHAR; |
37cd4238 KS |
1733 | if (c != '-') { |
1734 | UNREAD (c); | |
1735 | return ' '; | |
1736 | } | |
7bd279cd RS |
1737 | c = READCHAR; |
1738 | if (c == '\\') | |
f6f79b37 | 1739 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1740 | return c | super_modifier; |
078e7b4a JB |
1741 | |
1742 | case 'C': | |
1743 | c = READCHAR; | |
1744 | if (c != '-') | |
1745 | error ("Invalid escape character syntax"); | |
1746 | case '^': | |
1747 | c = READCHAR; | |
1748 | if (c == '\\') | |
f6f79b37 | 1749 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1750 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1751 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1752 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1753 | return c | ctrl_modifier; | |
f405a585 RS |
1754 | /* ASCII control chars are made from letters (both cases), |
1755 | as well as the non-letters within 0100...0137. */ | |
1756 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1757 | return (c & (037 | ~0177)); | |
1758 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1759 | return (c & (037 | ~0177)); | |
078e7b4a | 1760 | else |
7bd279cd | 1761 | return c | ctrl_modifier; |
078e7b4a JB |
1762 | |
1763 | case '0': | |
1764 | case '1': | |
1765 | case '2': | |
1766 | case '3': | |
1767 | case '4': | |
1768 | case '5': | |
1769 | case '6': | |
1770 | case '7': | |
1771 | /* An octal escape, as in ANSI C. */ | |
1772 | { | |
1773 | register int i = c - '0'; | |
1774 | register int count = 0; | |
1775 | while (++count < 3) | |
1776 | { | |
1777 | if ((c = READCHAR) >= '0' && c <= '7') | |
1778 | { | |
1779 | i *= 8; | |
1780 | i += c - '0'; | |
1781 | } | |
1782 | else | |
1783 | { | |
1784 | UNREAD (c); | |
1785 | break; | |
1786 | } | |
1787 | } | |
177c0ea7 | 1788 | |
f6f79b37 | 1789 | *byterep = 1; |
078e7b4a JB |
1790 | return i; |
1791 | } | |
1792 | ||
1793 | case 'x': | |
1794 | /* A hex escape, as in ANSI C. */ | |
1795 | { | |
1796 | int i = 0; | |
1797 | while (1) | |
1798 | { | |
1799 | c = READCHAR; | |
1800 | if (c >= '0' && c <= '9') | |
1801 | { | |
1802 | i *= 16; | |
1803 | i += c - '0'; | |
1804 | } | |
1805 | else if ((c >= 'a' && c <= 'f') | |
1806 | || (c >= 'A' && c <= 'F')) | |
1807 | { | |
1808 | i *= 16; | |
1809 | if (c >= 'a' && c <= 'f') | |
1810 | i += c - 'a' + 10; | |
1811 | else | |
1812 | i += c - 'A' + 10; | |
1813 | } | |
1814 | else | |
1815 | { | |
1816 | UNREAD (c); | |
1817 | break; | |
1818 | } | |
1819 | } | |
f6f79b37 RS |
1820 | |
1821 | *byterep = 2; | |
078e7b4a JB |
1822 | return i; |
1823 | } | |
1824 | ||
1825 | default: | |
fe0e03f3 KH |
1826 | if (BASE_LEADING_CODE_P (c)) |
1827 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1828 | return c; |
1829 | } | |
1830 | } | |
1831 | ||
bf5d1a17 GM |
1832 | |
1833 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1834 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1835 | read error is signaled . Value is the integer read. Signals an | |
1836 | error if encountering invalid read syntax or if RADIX is out of | |
1837 | range. */ | |
1838 | ||
1839 | static Lisp_Object | |
1840 | read_integer (readcharfun, radix) | |
1841 | Lisp_Object readcharfun; | |
1842 | int radix; | |
1843 | { | |
5e37dc22 GM |
1844 | int ndigits = 0, invalid_p, c, sign = 0; |
1845 | EMACS_INT number = 0; | |
bf5d1a17 GM |
1846 | |
1847 | if (radix < 2 || radix > 36) | |
1848 | invalid_p = 1; | |
1849 | else | |
1850 | { | |
1851 | number = ndigits = invalid_p = 0; | |
1852 | sign = 1; | |
1853 | ||
1854 | c = READCHAR; | |
1855 | if (c == '-') | |
1856 | { | |
1857 | c = READCHAR; | |
1858 | sign = -1; | |
1859 | } | |
1860 | else if (c == '+') | |
1861 | c = READCHAR; | |
177c0ea7 | 1862 | |
bf5d1a17 GM |
1863 | while (c >= 0) |
1864 | { | |
1865 | int digit; | |
177c0ea7 | 1866 | |
bf5d1a17 GM |
1867 | if (c >= '0' && c <= '9') |
1868 | digit = c - '0'; | |
1869 | else if (c >= 'a' && c <= 'z') | |
1870 | digit = c - 'a' + 10; | |
1871 | else if (c >= 'A' && c <= 'Z') | |
1872 | digit = c - 'A' + 10; | |
1873 | else | |
b632fa48 GM |
1874 | { |
1875 | UNREAD (c); | |
1876 | break; | |
1877 | } | |
bf5d1a17 GM |
1878 | |
1879 | if (digit < 0 || digit >= radix) | |
1880 | invalid_p = 1; | |
1881 | ||
1882 | number = radix * number + digit; | |
1883 | ++ndigits; | |
1884 | c = READCHAR; | |
1885 | } | |
1886 | } | |
1887 | ||
1888 | if (ndigits == 0 || invalid_p) | |
1889 | { | |
1890 | char buf[50]; | |
1891 | sprintf (buf, "integer, radix %d", radix); | |
1892 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
1893 | } | |
1894 | ||
1895 | return make_number (sign * number); | |
1896 | } | |
1897 | ||
1898 | ||
a742d646 GM |
1899 | /* Convert unibyte text in read_buffer to multibyte. |
1900 | ||
1901 | Initially, *P is a pointer after the end of the unibyte text, and | |
1902 | the pointer *END points after the end of read_buffer. | |
1903 | ||
1904 | If read_buffer doesn't have enough room to hold the result | |
1905 | of the conversion, reallocate it and adjust *P and *END. | |
1906 | ||
1907 | At the end, make *P point after the result of the conversion, and | |
1908 | return in *NCHARS the number of characters in the converted | |
1909 | text. */ | |
1910 | ||
1911 | static void | |
1912 | to_multibyte (p, end, nchars) | |
1913 | char **p, **end; | |
1914 | int *nchars; | |
1915 | { | |
1916 | int nbytes; | |
1917 | ||
1918 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 1919 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
1920 | { |
1921 | int offset = *p - read_buffer; | |
fe957e65 | 1922 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
1923 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
1924 | *p = read_buffer + offset; | |
1925 | *end = read_buffer + read_buffer_size; | |
1926 | } | |
1927 | ||
1928 | if (nbytes != *nchars) | |
1929 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
1930 | *p - read_buffer, nchars); | |
177c0ea7 | 1931 | |
a742d646 GM |
1932 | *p = read_buffer + nbytes; |
1933 | } | |
1934 | ||
1935 | ||
6428369f KH |
1936 | /* If the next token is ')' or ']' or '.', we store that character |
1937 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1938 | zero in *PCH and we read and return one lisp object. |
1939 | ||
1940 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1941 | ||
078e7b4a | 1942 | static Lisp_Object |
17634846 | 1943 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1944 | register Lisp_Object readcharfun; |
e28552a4 | 1945 | int *pch; |
17634846 | 1946 | int first_in_list; |
078e7b4a JB |
1947 | { |
1948 | register int c; | |
4ad679f9 EN |
1949 | int uninterned_symbol = 0; |
1950 | ||
6428369f | 1951 | *pch = 0; |
078e7b4a JB |
1952 | |
1953 | retry: | |
1954 | ||
1955 | c = READCHAR; | |
9c97398c GM |
1956 | if (c < 0) |
1957 | end_of_file_error (); | |
078e7b4a JB |
1958 | |
1959 | switch (c) | |
1960 | { | |
1961 | case '(': | |
1962 | return read_list (0, readcharfun); | |
1963 | ||
1964 | case '[': | |
c15cfd1f | 1965 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1966 | |
1967 | case ')': | |
1968 | case ']': | |
078e7b4a | 1969 | { |
6428369f KH |
1970 | *pch = c; |
1971 | return Qnil; | |
078e7b4a JB |
1972 | } |
1973 | ||
1974 | case '#': | |
200f684e | 1975 | c = READCHAR; |
c2390933 RS |
1976 | if (c == '^') |
1977 | { | |
1978 | c = READCHAR; | |
1979 | if (c == '[') | |
1980 | { | |
1981 | Lisp_Object tmp; | |
c15cfd1f | 1982 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
1983 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
1984 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1985 | error ("Invalid size char-table"); | |
1986 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1987 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1988 | return tmp; |
1989 | } | |
3701b5de KH |
1990 | else if (c == '^') |
1991 | { | |
1992 | c = READCHAR; | |
1993 | if (c == '[') | |
1994 | { | |
1995 | Lisp_Object tmp; | |
c15cfd1f | 1996 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
1997 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
1998 | error ("Invalid size char-table"); | |
1999 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2000 | XCHAR_TABLE (tmp)->top = Qnil; | |
2001 | return tmp; | |
2002 | } | |
2003 | Fsignal (Qinvalid_read_syntax, | |
2004 | Fcons (make_string ("#^^", 3), Qnil)); | |
2005 | } | |
c2390933 RS |
2006 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
2007 | } | |
2008 | if (c == '&') | |
2009 | { | |
2010 | Lisp_Object length; | |
2011 | length = read1 (readcharfun, pch, first_in_list); | |
2012 | c = READCHAR; | |
2013 | if (c == '"') | |
2014 | { | |
2015 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2016 | int size_in_chars |
2017 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2018 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2019 | |
2020 | UNREAD (c); | |
2021 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2022 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2023 | /* We used to print 1 char too many |
2024 | when the number of bits was a multiple of 8. | |
2025 | Accept such input in case it came from an old version. */ | |
2026 | && ! (XFASTINT (length) | |
d1ca81d9 | 2027 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
c2390933 | 2028 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 2029 | Fcons (make_string ("#&...", 5), Qnil)); |
177c0ea7 | 2030 | |
c2390933 | 2031 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2032 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2033 | size_in_chars); |
67d3b149 | 2034 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2035 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2036 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2037 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2038 | return val; |
2039 | } | |
ec3bbd7d | 2040 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 2041 | Qnil)); |
c2390933 | 2042 | } |
200f684e RS |
2043 | if (c == '[') |
2044 | { | |
2045 | /* Accept compiled functions at read-time so that we don't have to | |
2046 | build them using function calls. */ | |
748ef62f | 2047 | Lisp_Object tmp; |
c15cfd1f | 2048 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2049 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2050 | XVECTOR (tmp)->contents); | |
200f684e | 2051 | } |
748ef62f RS |
2052 | if (c == '(') |
2053 | { | |
2054 | Lisp_Object tmp; | |
2055 | struct gcpro gcpro1; | |
e28552a4 | 2056 | int ch; |
748ef62f RS |
2057 | |
2058 | /* Read the string itself. */ | |
17634846 | 2059 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2060 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
2061 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
2062 | GCPRO1 (tmp); | |
2063 | /* Read the intervals and their properties. */ | |
2064 | while (1) | |
2065 | { | |
2066 | Lisp_Object beg, end, plist; | |
2067 | ||
17634846 | 2068 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2069 | end = plist = Qnil; |
6428369f KH |
2070 | if (ch == ')') |
2071 | break; | |
2072 | if (ch == 0) | |
17634846 | 2073 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2074 | if (ch == 0) |
17634846 | 2075 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2076 | if (ch) |
748ef62f | 2077 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
2078 | Fcons (build_string ("invalid string property list"), |
2079 | Qnil)); | |
748ef62f RS |
2080 | Fset_text_properties (beg, end, plist, tmp); |
2081 | } | |
2082 | UNGCPRO; | |
2083 | return tmp; | |
2084 | } | |
177c0ea7 | 2085 | |
20ea2964 RS |
2086 | /* #@NUMBER is used to skip NUMBER following characters. |
2087 | That's used in .elc files to skip over doc strings | |
2088 | and function definitions. */ | |
2089 | if (c == '@') | |
2090 | { | |
2091 | int i, nskip = 0; | |
2092 | ||
2093 | /* Read a decimal integer. */ | |
2094 | while ((c = READCHAR) >= 0 | |
2095 | && c >= '0' && c <= '9') | |
2096 | { | |
2097 | nskip *= 10; | |
2098 | nskip += c - '0'; | |
2099 | } | |
2100 | if (c >= 0) | |
2101 | UNREAD (c); | |
177c0ea7 | 2102 | |
b2a30870 RS |
2103 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2104 | { | |
2105 | /* If we are supposed to force doc strings into core right now, | |
2106 | record the last string that we skipped, | |
2107 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2108 | |
2109 | /* But first exchange saved_doc_string | |
2110 | with prev_saved_doc_string, so we save two strings. */ | |
2111 | { | |
2112 | char *temp = saved_doc_string; | |
2113 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2114 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2115 | int temp_len = saved_doc_string_length; |
2116 | ||
2117 | saved_doc_string = prev_saved_doc_string; | |
2118 | saved_doc_string_size = prev_saved_doc_string_size; | |
2119 | saved_doc_string_position = prev_saved_doc_string_position; | |
2120 | saved_doc_string_length = prev_saved_doc_string_length; | |
2121 | ||
2122 | prev_saved_doc_string = temp; | |
2123 | prev_saved_doc_string_size = temp_size; | |
2124 | prev_saved_doc_string_position = temp_pos; | |
2125 | prev_saved_doc_string_length = temp_len; | |
2126 | } | |
2127 | ||
b2a30870 RS |
2128 | if (saved_doc_string_size == 0) |
2129 | { | |
2130 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2131 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2132 | } |
2133 | if (nskip > saved_doc_string_size) | |
2134 | { | |
2135 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2136 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2137 | saved_doc_string_size); | |
b2a30870 RS |
2138 | } |
2139 | ||
68c45bf0 | 2140 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2141 | |
2142 | /* Copy that many characters into saved_doc_string. */ | |
2143 | for (i = 0; i < nskip && c >= 0; i++) | |
2144 | saved_doc_string[i] = c = READCHAR; | |
2145 | ||
2146 | saved_doc_string_length = i; | |
2147 | } | |
2148 | else | |
b2a30870 RS |
2149 | { |
2150 | /* Skip that many characters. */ | |
2151 | for (i = 0; i < nskip && c >= 0; i++) | |
2152 | c = READCHAR; | |
2153 | } | |
d49f0c1a | 2154 | |
20ea2964 RS |
2155 | goto retry; |
2156 | } | |
e2518d02 RS |
2157 | if (c == '!') |
2158 | { | |
2159 | /* #! appears at the beginning of an executable file. | |
2160 | Skip the first line. */ | |
225c7a07 | 2161 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2162 | c = READCHAR; |
2163 | goto retry; | |
2164 | } | |
20ea2964 RS |
2165 | if (c == '$') |
2166 | return Vload_file_name; | |
2b6cae0c RS |
2167 | if (c == '\'') |
2168 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2169 | /* #:foo is the uninterned symbol named foo. */ |
2170 | if (c == ':') | |
2171 | { | |
2172 | uninterned_symbol = 1; | |
2173 | c = READCHAR; | |
2174 | goto default_label; | |
2175 | } | |
2176 | /* Reader forms that can reuse previously read objects. */ | |
2177 | if (c >= '0' && c <= '9') | |
2178 | { | |
2179 | int n = 0; | |
2180 | Lisp_Object tem; | |
2b6cae0c | 2181 | |
4ad679f9 EN |
2182 | /* Read a non-negative integer. */ |
2183 | while (c >= '0' && c <= '9') | |
2184 | { | |
2185 | n *= 10; | |
2186 | n += c - '0'; | |
2187 | c = READCHAR; | |
2188 | } | |
2189 | /* #n=object returns object, but associates it with n for #n#. */ | |
2190 | if (c == '=') | |
2191 | { | |
9e062b6c RS |
2192 | /* Make a placeholder for #n# to use temporarily */ |
2193 | Lisp_Object placeholder; | |
2194 | Lisp_Object cell; | |
2195 | ||
2196 | placeholder = Fcons(Qnil, Qnil); | |
2197 | cell = Fcons (make_number (n), placeholder); | |
2198 | read_objects = Fcons (cell, read_objects); | |
2199 | ||
2200 | /* Read the object itself. */ | |
4ad679f9 | 2201 | tem = read0 (readcharfun); |
9e062b6c RS |
2202 | |
2203 | /* Now put it everywhere the placeholder was... */ | |
2204 | substitute_object_in_subtree (tem, placeholder); | |
2205 | ||
2206 | /* ...and #n# will use the real value from now on. */ | |
2207 | Fsetcdr (cell, tem); | |
177c0ea7 | 2208 | |
4ad679f9 EN |
2209 | return tem; |
2210 | } | |
2211 | /* #n# returns a previously read object. */ | |
2212 | if (c == '#') | |
2213 | { | |
2214 | tem = Fassq (make_number (n), read_objects); | |
2215 | if (CONSP (tem)) | |
2216 | return XCDR (tem); | |
2217 | /* Fall through to error message. */ | |
2218 | } | |
bf5d1a17 GM |
2219 | else if (c == 'r' || c == 'R') |
2220 | return read_integer (readcharfun, n); | |
177c0ea7 | 2221 | |
4ad679f9 EN |
2222 | /* Fall through to error message. */ |
2223 | } | |
bf5d1a17 GM |
2224 | else if (c == 'x' || c == 'X') |
2225 | return read_integer (readcharfun, 16); | |
2226 | else if (c == 'o' || c == 'O') | |
2227 | return read_integer (readcharfun, 8); | |
2228 | else if (c == 'b' || c == 'B') | |
2229 | return read_integer (readcharfun, 2); | |
20ea2964 | 2230 | |
200f684e | 2231 | UNREAD (c); |
748ef62f | 2232 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
2233 | |
2234 | case ';': | |
2235 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2236 | goto retry; | |
2237 | ||
2238 | case '\'': | |
2239 | { | |
2240 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2241 | } | |
2242 | ||
17634846 RS |
2243 | case '`': |
2244 | if (first_in_list) | |
2245 | goto default_label; | |
2246 | else | |
2247 | { | |
2248 | Lisp_Object value; | |
2249 | ||
0ffbbdeb | 2250 | new_backquote_flag++; |
17634846 | 2251 | value = read0 (readcharfun); |
0ffbbdeb | 2252 | new_backquote_flag--; |
17634846 RS |
2253 | |
2254 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2255 | } | |
2256 | ||
2257 | case ',': | |
2258 | if (new_backquote_flag) | |
2259 | { | |
2260 | Lisp_Object comma_type = Qnil; | |
2261 | Lisp_Object value; | |
2262 | int ch = READCHAR; | |
2263 | ||
2264 | if (ch == '@') | |
2265 | comma_type = Qcomma_at; | |
2266 | else if (ch == '.') | |
2267 | comma_type = Qcomma_dot; | |
2268 | else | |
2269 | { | |
2270 | if (ch >= 0) UNREAD (ch); | |
2271 | comma_type = Qcomma; | |
2272 | } | |
2273 | ||
0ffbbdeb | 2274 | new_backquote_flag--; |
17634846 | 2275 | value = read0 (readcharfun); |
0ffbbdeb | 2276 | new_backquote_flag++; |
17634846 RS |
2277 | return Fcons (comma_type, Fcons (value, Qnil)); |
2278 | } | |
2279 | else | |
2280 | goto default_label; | |
2281 | ||
078e7b4a JB |
2282 | case '?': |
2283 | { | |
f6f79b37 | 2284 | int discard; |
df9c2be7 KS |
2285 | int next_char; |
2286 | int ok; | |
f6f79b37 | 2287 | |
078e7b4a | 2288 | c = READCHAR; |
9c97398c GM |
2289 | if (c < 0) |
2290 | end_of_file_error (); | |
078e7b4a | 2291 | |
b9284371 KS |
2292 | /* Accept `single space' syntax like (list ? x) where the |
2293 | whitespace character is SPC or TAB. | |
2294 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2295 | as there are well-established escape sequences for these. */ | |
2296 | if (c == ' ' || c == '\t') | |
2297 | return make_number (c); | |
2298 | ||
078e7b4a | 2299 | if (c == '\\') |
f6f79b37 | 2300 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2301 | else if (BASE_LEADING_CODE_P (c)) |
2302 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2303 | |
df9c2be7 KS |
2304 | next_char = READCHAR; |
2305 | if (next_char == '.') | |
2306 | { | |
2307 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2308 | int next_next_char = READCHAR; | |
2309 | UNREAD (next_next_char); | |
2310 | ||
2311 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2312 | || (next_next_char < 0200 |
2313 | && (index ("\"';([#?", next_next_char) | |
2314 | || (!first_in_list && next_next_char == '`') | |
2315 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2316 | } |
2317 | else | |
2318 | { | |
2319 | ok = (next_char <= 040 | |
e613ea97 KH |
2320 | || (next_char < 0200 |
2321 | && (index ("\"';()[]#?", next_char) | |
2322 | || (!first_in_list && next_char == '`') | |
2323 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2324 | } |
2325 | UNREAD (next_char); | |
2326 | if (!ok) | |
37cd4238 KS |
2327 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("?", 1), Qnil)); |
2328 | ||
6f7f43d5 | 2329 | return make_number (c); |
078e7b4a JB |
2330 | } |
2331 | ||
00a9a935 | 2332 | case '"': |
078e7b4a | 2333 | { |
a742d646 GM |
2334 | char *p = read_buffer; |
2335 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2336 | register int c; |
5150eeec RS |
2337 | /* 1 if we saw an escape sequence specifying |
2338 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2339 | int force_multibyte = 0; |
5150eeec | 2340 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2341 | a single-byte character. */ |
2342 | int force_singlebyte = 0; | |
5150eeec RS |
2343 | /* 1 if read_buffer contains multibyte text now. */ |
2344 | int is_multibyte = 0; | |
078e7b4a | 2345 | int cancel = 0; |
5150eeec | 2346 | int nchars = 0; |
078e7b4a JB |
2347 | |
2348 | while ((c = READCHAR) >= 0 | |
2349 | && c != '\"') | |
2350 | { | |
449fea39 | 2351 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2352 | { |
5d65df0d GM |
2353 | int offset = p - read_buffer; |
2354 | read_buffer = (char *) xrealloc (read_buffer, | |
2355 | read_buffer_size *= 2); | |
2356 | p = read_buffer + offset; | |
078e7b4a JB |
2357 | end = read_buffer + read_buffer_size; |
2358 | } | |
bed23cb2 | 2359 | |
078e7b4a | 2360 | if (c == '\\') |
03e88613 | 2361 | { |
f6f79b37 RS |
2362 | int byterep; |
2363 | ||
2364 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2365 | |
2366 | /* C is -1 if \ newline has just been seen */ | |
2367 | if (c == -1) | |
03e88613 | 2368 | { |
bed23cb2 RS |
2369 | if (p == read_buffer) |
2370 | cancel = 1; | |
03e88613 RS |
2371 | continue; |
2372 | } | |
bed23cb2 | 2373 | |
f6f79b37 | 2374 | if (byterep == 1) |
e7fc914b | 2375 | force_singlebyte = 1; |
f6f79b37 RS |
2376 | else if (byterep == 2) |
2377 | force_multibyte = 1; | |
03e88613 | 2378 | } |
6f7f43d5 | 2379 | |
5150eeec RS |
2380 | /* A character that must be multibyte forces multibyte. */ |
2381 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2382 | force_multibyte = 1; | |
2383 | ||
2384 | /* If we just discovered the need to be multibyte, | |
2385 | convert the text accumulated thus far. */ | |
2386 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2387 | { |
5150eeec RS |
2388 | is_multibyte = 1; |
2389 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2390 | } |
988c2f83 | 2391 | |
5150eeec RS |
2392 | /* Allow `\C- ' and `\C-?'. */ |
2393 | if (c == (CHAR_CTL | ' ')) | |
2394 | c = 0; | |
2395 | else if (c == (CHAR_CTL | '?')) | |
2396 | c = 127; | |
95af0924 | 2397 | |
5150eeec RS |
2398 | if (c & CHAR_SHIFT) |
2399 | { | |
2400 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2401 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2402 | c &= ~CHAR_SHIFT; | |
2403 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2404 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2405 | } |
5150eeec RS |
2406 | |
2407 | if (c & CHAR_META) | |
2408 | /* Move the meta bit to the right place for a string. */ | |
2409 | c = (c & ~CHAR_META) | 0x80; | |
2410 | if (c & CHAR_MODIFIER_MASK) | |
2411 | error ("Invalid modifier in string"); | |
2412 | ||
2413 | if (is_multibyte) | |
2414 | p += CHAR_STRING (c, p); | |
2415 | else | |
2416 | *p++ = c; | |
2417 | ||
2418 | nchars++; | |
078e7b4a | 2419 | } |
5150eeec | 2420 | |
6f7f43d5 | 2421 | if (c < 0) |
9c97398c | 2422 | end_of_file_error (); |
078e7b4a JB |
2423 | |
2424 | /* If purifying, and string starts with \ newline, | |
2425 | return zero instead. This is for doc strings | |
08564963 | 2426 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2427 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2428 | return make_number (0); |
2429 | ||
5150eeec RS |
2430 | if (is_multibyte || force_singlebyte) |
2431 | ; | |
94e554db RS |
2432 | else if (load_convert_to_unibyte) |
2433 | { | |
2434 | Lisp_Object string; | |
a742d646 | 2435 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2436 | if (p - read_buffer != nchars) |
2437 | { | |
2438 | string = make_multibyte_string (read_buffer, nchars, | |
2439 | p - read_buffer); | |
2440 | return Fstring_make_unibyte (string); | |
2441 | } | |
5150eeec RS |
2442 | /* We can make a unibyte string directly. */ |
2443 | is_multibyte = 0; | |
94e554db | 2444 | } |
8db9dc66 RS |
2445 | else if (EQ (readcharfun, Qget_file_char) |
2446 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2447 | { |
2448 | /* Nowadays, reading directly from a file is used only for | |
2449 | compiled Emacs Lisp files, and those always use the | |
2450 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2451 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2452 | byte-compile-dynamic = t). So make the string multibyte |
2453 | if the string contains any multibyte sequences. | |
2454 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2455 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2456 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2457 | } |
e28552a4 | 2458 | else |
bed23cb2 RS |
2459 | /* In all other cases, if we read these bytes as |
2460 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2461 | ; |
e7fc914b | 2462 | |
abb13b09 CW |
2463 | /* We want readchar_count to be the number of characters, not |
2464 | bytes. Hence we adjust for multibyte characters in the | |
2465 | string. ... But it doesn't seem to be necessary, because | |
2466 | READCHAR *does* read multibyte characters from buffers. */ | |
2467 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2468 | if (read_pure) |
491f16a2 | 2469 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2470 | is_multibyte); |
491f16a2 | 2471 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2472 | is_multibyte); |
078e7b4a JB |
2473 | } |
2474 | ||
109d300c JB |
2475 | case '.': |
2476 | { | |
109d300c JB |
2477 | int next_char = READCHAR; |
2478 | UNREAD (next_char); | |
2479 | ||
035eec48 | 2480 | if (next_char <= 040 |
e613ea97 | 2481 | || (next_char < 0200 |
95af0924 KS |
2482 | && (index ("\"';([#?", next_char) |
2483 | || (!first_in_list && next_char == '`') | |
2484 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2485 | { |
6428369f KH |
2486 | *pch = c; |
2487 | return Qnil; | |
109d300c JB |
2488 | } |
2489 | ||
2490 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2491 | below will now loop at least once, assuring that we will not | |
2492 | try to UNREAD two characters in a row. */ | |
2493 | } | |
078e7b4a | 2494 | default: |
17634846 | 2495 | default_label: |
078e7b4a JB |
2496 | if (c <= 040) goto retry; |
2497 | { | |
38404229 | 2498 | char *p = read_buffer; |
481c6336 | 2499 | int quoted = 0; |
078e7b4a JB |
2500 | |
2501 | { | |
38404229 | 2502 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2503 | |
6f7f43d5 | 2504 | while (c > 040 |
e613ea97 KH |
2505 | && (c >= 0200 |
2506 | || (!index ("\"';()[]#", c) | |
2507 | && !(!first_in_list && c == '`') | |
2508 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2509 | { |
449fea39 | 2510 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2511 | { |
5d65df0d GM |
2512 | int offset = p - read_buffer; |
2513 | read_buffer = (char *) xrealloc (read_buffer, | |
2514 | read_buffer_size *= 2); | |
2515 | p = read_buffer + offset; | |
078e7b4a JB |
2516 | end = read_buffer + read_buffer_size; |
2517 | } | |
177c0ea7 | 2518 | |
078e7b4a | 2519 | if (c == '\\') |
481c6336 RS |
2520 | { |
2521 | c = READCHAR; | |
4ab11c09 GM |
2522 | if (c == -1) |
2523 | end_of_file_error (); | |
481c6336 RS |
2524 | quoted = 1; |
2525 | } | |
6f7f43d5 | 2526 | |
bed23cb2 | 2527 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2528 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2529 | else |
2530 | *p++ = c; | |
6f7f43d5 | 2531 | |
078e7b4a JB |
2532 | c = READCHAR; |
2533 | } | |
2534 | ||
2535 | if (p == end) | |
2536 | { | |
5d65df0d GM |
2537 | int offset = p - read_buffer; |
2538 | read_buffer = (char *) xrealloc (read_buffer, | |
2539 | read_buffer_size *= 2); | |
2540 | p = read_buffer + offset; | |
2541 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2542 | } |
2543 | *p = 0; | |
2544 | if (c >= 0) | |
2545 | UNREAD (c); | |
2546 | } | |
2547 | ||
4ad679f9 | 2548 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2549 | { |
2550 | register char *p1; | |
2551 | register Lisp_Object val; | |
2552 | p1 = read_buffer; | |
2553 | if (*p1 == '+' || *p1 == '-') p1++; | |
2554 | /* Is it an integer? */ | |
2555 | if (p1 != p) | |
2556 | { | |
2557 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2558 | /* Integers can have trailing decimal points. */ |
2559 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2560 | if (p1 == p) |
2561 | /* It is an integer. */ | |
2562 | { | |
481c6336 RS |
2563 | if (p1[-1] == '.') |
2564 | p1[-1] = '\0'; | |
faca07fb RS |
2565 | if (sizeof (int) == sizeof (EMACS_INT)) |
2566 | XSETINT (val, atoi (read_buffer)); | |
2567 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2568 | XSETINT (val, atol (read_buffer)); | |
2569 | else | |
2570 | abort (); | |
481c6336 RS |
2571 | return val; |
2572 | } | |
2573 | } | |
481c6336 | 2574 | if (isfloat_string (read_buffer)) |
eb659c41 | 2575 | { |
a8972052 PE |
2576 | /* Compute NaN and infinities using 0.0 in a variable, |
2577 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2578 | than we are. */ |
3c329963 | 2579 | double zero = 0.0; |
a8972052 PE |
2580 | |
2581 | double value; | |
2582 | ||
2583 | /* Negate the value ourselves. This treats 0, NaNs, | |
2584 | and infinity properly on IEEE floating point hosts, | |
2585 | and works around a common bug where atof ("-0.0") | |
2586 | drops the sign. */ | |
2587 | int negative = read_buffer[0] == '-'; | |
2588 | ||
2589 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2590 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2591 | switch (p[-1]) |
eb659c41 | 2592 | { |
a8972052 PE |
2593 | case 'F': |
2594 | value = 1.0 / zero; | |
2595 | break; | |
2596 | case 'N': | |
2597 | value = zero / zero; | |
2598 | break; | |
2599 | default: | |
2600 | value = atof (read_buffer + negative); | |
2601 | break; | |
eb659c41 | 2602 | } |
a8972052 PE |
2603 | |
2604 | return make_float (negative ? - value : value); | |
eb659c41 | 2605 | } |
481c6336 | 2606 | } |
abb13b09 CW |
2607 | { |
2608 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2609 | : intern (read_buffer); | |
2610 | if (EQ (Vread_with_symbol_positions, Qt) | |
2611 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2612 | Vread_symbol_positions_list = |
abb13b09 CW |
2613 | /* Kind of a hack; this will probably fail if characters |
2614 | in the symbol name were escaped. Not really a big | |
2615 | deal, though. */ | |
f74db720 SM |
2616 | Fcons (Fcons (result, |
2617 | make_number (readchar_count | |
2618 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2619 | Vread_symbol_positions_list); |
2620 | return result; | |
2621 | } | |
078e7b4a JB |
2622 | } |
2623 | } | |
2624 | } | |
2625 | \f | |
9e062b6c RS |
2626 | |
2627 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2628 | static Lisp_Object seen_list; | |
2629 | ||
2630 | static void | |
2631 | substitute_object_in_subtree (object, placeholder) | |
2632 | Lisp_Object object; | |
2633 | Lisp_Object placeholder; | |
2634 | { | |
2635 | Lisp_Object check_object; | |
2636 | ||
2637 | /* We haven't seen any objects when we start. */ | |
2638 | seen_list = Qnil; | |
2639 | ||
2640 | /* Make all the substitutions. */ | |
2641 | check_object | |
2642 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2643 | |
9e062b6c RS |
2644 | /* Clear seen_list because we're done with it. */ |
2645 | seen_list = Qnil; | |
2646 | ||
2647 | /* The returned object here is expected to always eq the | |
2648 | original. */ | |
2649 | if (!EQ (check_object, object)) | |
2650 | error ("Unexpected mutation error in reader"); | |
2651 | } | |
2652 | ||
2653 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2654 | #define SUBSTITUTE(get_val, set_val) \ | |
2655 | { \ | |
2656 | Lisp_Object old_value = get_val; \ | |
2657 | Lisp_Object true_value \ | |
2658 | = substitute_object_recurse (object, placeholder,\ | |
2659 | old_value); \ | |
2660 | \ | |
2661 | if (!EQ (old_value, true_value)) \ | |
2662 | { \ | |
2663 | set_val; \ | |
2664 | } \ | |
2665 | } | |
2666 | ||
2667 | static Lisp_Object | |
2668 | substitute_object_recurse (object, placeholder, subtree) | |
2669 | Lisp_Object object; | |
2670 | Lisp_Object placeholder; | |
2671 | Lisp_Object subtree; | |
2672 | { | |
2673 | /* If we find the placeholder, return the target object. */ | |
2674 | if (EQ (placeholder, subtree)) | |
2675 | return object; | |
2676 | ||
2677 | /* If we've been to this node before, don't explore it again. */ | |
2678 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2679 | return subtree; | |
2680 | ||
2681 | /* If this node can be the entry point to a cycle, remember that | |
2682 | we've seen it. It can only be such an entry point if it was made | |
2683 | by #n=, which means that we can find it as a value in | |
2684 | read_objects. */ | |
2685 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2686 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2687 | |
9e062b6c RS |
2688 | /* Recurse according to subtree's type. |
2689 | Every branch must return a Lisp_Object. */ | |
2690 | switch (XTYPE (subtree)) | |
2691 | { | |
2692 | case Lisp_Vectorlike: | |
2693 | { | |
2694 | int i; | |
7c752c80 | 2695 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2696 | for (i = 0; i < length; i++) |
2697 | { | |
2698 | Lisp_Object idx = make_number (i); | |
2699 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2700 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2701 | } |
2702 | return subtree; | |
2703 | } | |
2704 | ||
2705 | case Lisp_Cons: | |
2706 | { | |
2707 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2708 | Fsetcar (subtree, true_value)); |
9e062b6c | 2709 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2710 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2711 | return subtree; |
2712 | } | |
2713 | ||
9e062b6c RS |
2714 | case Lisp_String: |
2715 | { | |
2716 | /* Check for text properties in each interval. | |
e61b9b87 | 2717 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2718 | |
d5db4077 | 2719 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2720 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2721 | |
0d74b006 SM |
2722 | traverse_intervals_noorder (root_interval, |
2723 | &substitute_in_interval, arg); | |
9e062b6c RS |
2724 | |
2725 | return subtree; | |
2726 | } | |
9e062b6c RS |
2727 | |
2728 | /* Other types don't recurse any further. */ | |
2729 | default: | |
2730 | return subtree; | |
2731 | } | |
2732 | } | |
2733 | ||
2734 | /* Helper function for substitute_object_recurse. */ | |
2735 | static void | |
2736 | substitute_in_interval (interval, arg) | |
2737 | INTERVAL interval; | |
2738 | Lisp_Object arg; | |
2739 | { | |
2740 | Lisp_Object object = Fcar (arg); | |
2741 | Lisp_Object placeholder = Fcdr (arg); | |
2742 | ||
2743 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2744 | } | |
2745 | ||
2746 | \f | |
078e7b4a JB |
2747 | #define LEAD_INT 1 |
2748 | #define DOT_CHAR 2 | |
2749 | #define TRAIL_INT 4 | |
2750 | #define E_CHAR 8 | |
2751 | #define EXP_INT 16 | |
2752 | ||
2753 | int | |
2754 | isfloat_string (cp) | |
2755 | register char *cp; | |
2756 | { | |
c1a2f60a | 2757 | register int state; |
177c0ea7 | 2758 | |
d8578e58 RS |
2759 | char *start = cp; |
2760 | ||
078e7b4a JB |
2761 | state = 0; |
2762 | if (*cp == '+' || *cp == '-') | |
2763 | cp++; | |
2764 | ||
075027b1 | 2765 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2766 | { |
2767 | state |= LEAD_INT; | |
075027b1 RS |
2768 | while (*cp >= '0' && *cp <= '9') |
2769 | cp++; | |
078e7b4a JB |
2770 | } |
2771 | if (*cp == '.') | |
2772 | { | |
2773 | state |= DOT_CHAR; | |
2774 | cp++; | |
2775 | } | |
075027b1 | 2776 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2777 | { |
2778 | state |= TRAIL_INT; | |
075027b1 | 2779 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2780 | cp++; |
2781 | } | |
a35f88bf | 2782 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2783 | { |
2784 | state |= E_CHAR; | |
2785 | cp++; | |
e73997a1 RS |
2786 | if (*cp == '+' || *cp == '-') |
2787 | cp++; | |
078e7b4a | 2788 | } |
078e7b4a | 2789 | |
075027b1 | 2790 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2791 | { |
2792 | state |= EXP_INT; | |
075027b1 | 2793 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2794 | cp++; |
2795 | } | |
d8578e58 RS |
2796 | else if (cp == start) |
2797 | ; | |
eb659c41 RS |
2798 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2799 | { | |
2800 | state |= EXP_INT; | |
2801 | cp += 3; | |
2802 | } | |
2803 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2804 | { | |
2805 | state |= EXP_INT; | |
2806 | cp += 3; | |
2807 | } | |
2808 | ||
37579d7c | 2809 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2810 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2811 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2812 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2813 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2814 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2815 | } |
cc94f3b2 | 2816 | |
078e7b4a JB |
2817 | \f |
2818 | static Lisp_Object | |
c15cfd1f | 2819 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2820 | Lisp_Object readcharfun; |
c15cfd1f | 2821 | int bytecodeflag; |
078e7b4a JB |
2822 | { |
2823 | register int i; | |
2824 | register int size; | |
2825 | register Lisp_Object *ptr; | |
c15cfd1f | 2826 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2827 | register struct Lisp_Cons *otem; |
2828 | Lisp_Object len; | |
2829 | ||
2830 | tem = read_list (1, readcharfun); | |
2831 | len = Flength (tem); | |
2832 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2833 | ||
078e7b4a JB |
2834 | size = XVECTOR (vector)->size; |
2835 | ptr = XVECTOR (vector)->contents; | |
2836 | for (i = 0; i < size; i++) | |
2837 | { | |
c15cfd1f RS |
2838 | item = Fcar (tem); |
2839 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2840 | bytecode object, the docstring containing the bytecode and | |
2841 | constants values must be treated as unibyte and passed to | |
2842 | Fread, to get the actual bytecode string and constants vector. */ | |
2843 | if (bytecodeflag && load_force_doc_strings) | |
2844 | { | |
2845 | if (i == COMPILED_BYTECODE) | |
2846 | { | |
2847 | if (!STRINGP (item)) | |
2848 | error ("invalid byte code"); | |
2849 | ||
2850 | /* Delay handling the bytecode slot until we know whether | |
2851 | it is lazily-loaded (we can tell by whether the | |
2852 | constants slot is nil). */ | |
2853 | ptr[COMPILED_CONSTANTS] = item; | |
2854 | item = Qnil; | |
2855 | } | |
2856 | else if (i == COMPILED_CONSTANTS) | |
2857 | { | |
2858 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2859 | ||
2860 | if (NILP (item)) | |
2861 | { | |
2862 | /* Coerce string to unibyte (like string-as-unibyte, | |
2863 | but without generating extra garbage and | |
2864 | guaranteeing no change in the contents). */ | |
bee91904 | 2865 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 2866 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
2867 | |
2868 | item = Fread (bytestr); | |
2869 | if (!CONSP (item)) | |
2870 | error ("invalid byte code"); | |
2871 | ||
2872 | otem = XCONS (item); | |
c1d497be KR |
2873 | bytestr = XCAR (item); |
2874 | item = XCDR (item); | |
c15cfd1f RS |
2875 | free_cons (otem); |
2876 | } | |
2877 | ||
2878 | /* Now handle the bytecode slot. */ | |
2879 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2880 | } | |
2881 | } | |
2882 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2883 | otem = XCONS (tem); |
2884 | tem = Fcdr (tem); | |
2885 | free_cons (otem); | |
2886 | } | |
2887 | return vector; | |
2888 | } | |
177c0ea7 | 2889 | |
6f7f43d5 RS |
2890 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2891 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2892 | and make structure pure. */ |
2893 | ||
2894 | static Lisp_Object | |
2895 | read_list (flag, readcharfun) | |
2896 | int flag; | |
2897 | register Lisp_Object readcharfun; | |
2898 | { | |
2899 | /* -1 means check next element for defun, | |
2900 | 0 means don't check, | |
2901 | 1 means already checked and found defun. */ | |
2902 | int defunflag = flag < 0 ? -1 : 0; | |
2903 | Lisp_Object val, tail; | |
2904 | register Lisp_Object elt, tem; | |
2905 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2906 | /* 0 is the normal case. |
b2a30870 | 2907 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 2908 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 2909 | int doc_reference = 0; |
078e7b4a | 2910 | |
17634846 RS |
2911 | /* Initialize this to 1 if we are reading a list. */ |
2912 | int first_in_list = flag <= 0; | |
2913 | ||
078e7b4a JB |
2914 | val = Qnil; |
2915 | tail = Qnil; | |
2916 | ||
2917 | while (1) | |
2918 | { | |
e28552a4 | 2919 | int ch; |
078e7b4a | 2920 | GCPRO2 (val, tail); |
17634846 | 2921 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2922 | UNGCPRO; |
20ea2964 | 2923 | |
17634846 RS |
2924 | first_in_list = 0; |
2925 | ||
821d417e | 2926 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2927 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2928 | && ! NILP (elt) |
821d417e RS |
2929 | && !NILP (Vpurify_flag)) |
2930 | { | |
2931 | if (NILP (Vdoc_file_name)) | |
2932 | /* We have not yet called Snarf-documentation, so assume | |
2933 | this file is described in the DOC-MM.NN file | |
2934 | and Snarf-documentation will fill in the right value later. | |
2935 | For now, replace the whole list with 0. */ | |
2936 | doc_reference = 1; | |
2937 | else | |
2938 | /* We have already called Snarf-documentation, so make a relative | |
2939 | file name for this file, so it can be found properly | |
2940 | in the installed Lisp directory. | |
2941 | We don't use Fexpand_file_name because that would make | |
2942 | the directory absolute now. */ | |
2943 | elt = concat2 (build_string ("../lisp/"), | |
2944 | Ffile_name_nondirectory (elt)); | |
2945 | } | |
b2a30870 | 2946 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2947 | && ! NILP (elt) |
b2a30870 RS |
2948 | && load_force_doc_strings) |
2949 | doc_reference = 2; | |
20ea2964 | 2950 | |
6428369f | 2951 | if (ch) |
078e7b4a JB |
2952 | { |
2953 | if (flag > 0) | |
2954 | { | |
6428369f | 2955 | if (ch == ']') |
078e7b4a | 2956 | return val; |
821d417e RS |
2957 | Fsignal (Qinvalid_read_syntax, |
2958 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2959 | } |
6428369f | 2960 | if (ch == ')') |
078e7b4a | 2961 | return val; |
6428369f | 2962 | if (ch == '.') |
078e7b4a JB |
2963 | { |
2964 | GCPRO2 (val, tail); | |
265a9e55 | 2965 | if (!NILP (tail)) |
f5df591a | 2966 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
2967 | else |
2968 | val = read0 (readcharfun); | |
17634846 | 2969 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2970 | UNGCPRO; |
6428369f | 2971 | if (ch == ')') |
821d417e RS |
2972 | { |
2973 | if (doc_reference == 1) | |
2974 | return make_number (0); | |
b2a30870 RS |
2975 | if (doc_reference == 2) |
2976 | { | |
2977 | /* Get a doc string from the file we are loading. | |
2978 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 2979 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
2980 | /* Position is negative for user variables. */ |
2981 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
2982 | if (pos >= saved_doc_string_position |
2983 | && pos < (saved_doc_string_position | |
2984 | + saved_doc_string_length)) | |
2985 | { | |
2986 | int start = pos - saved_doc_string_position; | |
2987 | int from, to; | |
2988 | ||
2989 | /* Process quoting with ^A, | |
2990 | and find the end of the string, | |
2991 | which is marked with ^_ (037). */ | |
2992 | for (from = start, to = start; | |
2993 | saved_doc_string[from] != 037;) | |
2994 | { | |
2995 | int c = saved_doc_string[from++]; | |
2996 | if (c == 1) | |
2997 | { | |
2998 | c = saved_doc_string[from++]; | |
2999 | if (c == 1) | |
3000 | saved_doc_string[to++] = c; | |
3001 | else if (c == '0') | |
3002 | saved_doc_string[to++] = 0; | |
3003 | else if (c == '_') | |
3004 | saved_doc_string[to++] = 037; | |
3005 | } | |
3006 | else | |
3007 | saved_doc_string[to++] = c; | |
3008 | } | |
3009 | ||
3010 | return make_string (saved_doc_string + start, | |
3011 | to - start); | |
3012 | } | |
c15cfd1f RS |
3013 | /* Look in prev_saved_doc_string the same way. */ |
3014 | else if (pos >= prev_saved_doc_string_position | |
3015 | && pos < (prev_saved_doc_string_position | |
3016 | + prev_saved_doc_string_length)) | |
3017 | { | |
3018 | int start = pos - prev_saved_doc_string_position; | |
3019 | int from, to; | |
3020 | ||
3021 | /* Process quoting with ^A, | |
3022 | and find the end of the string, | |
3023 | which is marked with ^_ (037). */ | |
3024 | for (from = start, to = start; | |
3025 | prev_saved_doc_string[from] != 037;) | |
3026 | { | |
3027 | int c = prev_saved_doc_string[from++]; | |
3028 | if (c == 1) | |
3029 | { | |
3030 | c = prev_saved_doc_string[from++]; | |
3031 | if (c == 1) | |
3032 | prev_saved_doc_string[to++] = c; | |
3033 | else if (c == '0') | |
3034 | prev_saved_doc_string[to++] = 0; | |
3035 | else if (c == '_') | |
3036 | prev_saved_doc_string[to++] = 037; | |
3037 | } | |
3038 | else | |
3039 | prev_saved_doc_string[to++] = c; | |
3040 | } | |
3041 | ||
3042 | return make_string (prev_saved_doc_string + start, | |
3043 | to - start); | |
3044 | } | |
b2a30870 | 3045 | else |
6fe9cce5 | 3046 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3047 | } |
3048 | ||
821d417e RS |
3049 | return val; |
3050 | } | |
078e7b4a JB |
3051 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
3052 | } | |
3053 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
3054 | } | |
3055 | tem = (read_pure && flag <= 0 | |
3056 | ? pure_cons (elt, Qnil) | |
3057 | : Fcons (elt, Qnil)); | |
265a9e55 | 3058 | if (!NILP (tail)) |
f5df591a | 3059 | XSETCDR (tail, tem); |
078e7b4a JB |
3060 | else |
3061 | val = tem; | |
3062 | tail = tem; | |
3063 | if (defunflag < 0) | |
3064 | defunflag = EQ (elt, Qdefun); | |
3065 | else if (defunflag > 0) | |
3066 | read_pure = 1; | |
3067 | } | |
3068 | } | |
3069 | \f | |
3070 | Lisp_Object Vobarray; | |
3071 | Lisp_Object initial_obarray; | |
3072 | ||
d007f5c8 RS |
3073 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3074 | ||
3075 | int oblookup_last_bucket_number; | |
3076 | ||
3077 | static int hash_string (); | |
d007f5c8 RS |
3078 | |
3079 | /* Get an error if OBARRAY is not an obarray. | |
3080 | If it is one, return it. */ | |
3081 | ||
078e7b4a JB |
3082 | Lisp_Object |
3083 | check_obarray (obarray) | |
3084 | Lisp_Object obarray; | |
3085 | { | |
cfff016d | 3086 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3087 | { |
3088 | /* If Vobarray is now invalid, force it to be valid. */ | |
3089 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
3090 | ||
3091 | obarray = wrong_type_argument (Qvectorp, obarray); | |
3092 | } | |
3093 | return obarray; | |
3094 | } | |
3095 | ||
d007f5c8 RS |
3096 | /* Intern the C string STR: return a symbol with that name, |
3097 | interned in the current obarray. */ | |
078e7b4a JB |
3098 | |
3099 | Lisp_Object | |
3100 | intern (str) | |
4b2dd274 | 3101 | const char *str; |
078e7b4a JB |
3102 | { |
3103 | Lisp_Object tem; | |
3104 | int len = strlen (str); | |
153a17b7 | 3105 | Lisp_Object obarray; |
078e7b4a | 3106 | |
153a17b7 | 3107 | obarray = Vobarray; |
cfff016d | 3108 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3109 | obarray = check_obarray (obarray); |
e28552a4 | 3110 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3111 | if (SYMBOLP (tem)) |
078e7b4a | 3112 | return tem; |
87631ef7 | 3113 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3114 | } |
4ad679f9 EN |
3115 | |
3116 | /* Create an uninterned symbol with name STR. */ | |
3117 | ||
3118 | Lisp_Object | |
3119 | make_symbol (str) | |
3120 | char *str; | |
3121 | { | |
3122 | int len = strlen (str); | |
3123 | ||
3124 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3125 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3126 | : make_string (str, len))); |
3127 | } | |
d007f5c8 | 3128 | \f |
078e7b4a | 3129 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3130 | doc: /* Return the canonical symbol whose name is STRING. |
3131 | If there is none, one is created by this function and returned. | |
3132 | A second optional argument specifies the obarray to use; | |
3133 | it defaults to the value of `obarray'. */) | |
3134 | (string, obarray) | |
9391b698 | 3135 | Lisp_Object string, obarray; |
078e7b4a JB |
3136 | { |
3137 | register Lisp_Object tem, sym, *ptr; | |
3138 | ||
265a9e55 | 3139 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3140 | obarray = check_obarray (obarray); |
3141 | ||
b7826503 | 3142 | CHECK_STRING (string); |
078e7b4a | 3143 | |
d5db4077 KR |
3144 | tem = oblookup (obarray, SDATA (string), |
3145 | SCHARS (string), | |
3146 | SBYTES (string)); | |
cfff016d | 3147 | if (!INTEGERP (tem)) |
078e7b4a JB |
3148 | return tem; |
3149 | ||
265a9e55 | 3150 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3151 | string = Fpurecopy (string); |
3152 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3153 | |
3154 | if (EQ (obarray, initial_obarray)) | |
3155 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3156 | else | |
3157 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3158 | |
d5db4077 | 3159 | if ((SREF (string, 0) == ':') |
a458d45d | 3160 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3161 | { |
3162 | XSYMBOL (sym)->constant = 1; | |
3163 | XSYMBOL (sym)->value = sym; | |
3164 | } | |
a0549832 | 3165 | |
078e7b4a | 3166 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3167 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3168 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3169 | else | |
3170 | XSYMBOL (sym)->next = 0; | |
3171 | *ptr = sym; | |
3172 | return sym; | |
3173 | } | |
3174 | ||
3175 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3176 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3177 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3178 | symbol is searched for. | |
3179 | A second optional argument specifies the obarray to use; | |
3180 | it defaults to the value of `obarray'. */) | |
3181 | (name, obarray) | |
b55048d4 | 3182 | Lisp_Object name, obarray; |
078e7b4a | 3183 | { |
c2d47f4b | 3184 | register Lisp_Object tem, string; |
078e7b4a | 3185 | |
265a9e55 | 3186 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3187 | obarray = check_obarray (obarray); |
3188 | ||
b55048d4 GM |
3189 | if (!SYMBOLP (name)) |
3190 | { | |
b7826503 | 3191 | CHECK_STRING (name); |
c2d47f4b | 3192 | string = name; |
b55048d4 GM |
3193 | } |
3194 | else | |
c2d47f4b | 3195 | string = SYMBOL_NAME (name); |
078e7b4a | 3196 | |
c2d47f4b | 3197 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3198 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3199 | return Qnil; | |
3200 | else | |
078e7b4a | 3201 | return tem; |
078e7b4a | 3202 | } |
d007f5c8 RS |
3203 | \f |
3204 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3205 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3206 | The value is t if a symbol was found and deleted, nil otherwise. | |
3207 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3208 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3209 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3210 | (name, obarray) | |
d007f5c8 RS |
3211 | Lisp_Object name, obarray; |
3212 | { | |
3213 | register Lisp_Object string, tem; | |
3214 | int hash; | |
3215 | ||
3216 | if (NILP (obarray)) obarray = Vobarray; | |
3217 | obarray = check_obarray (obarray); | |
3218 | ||
3219 | if (SYMBOLP (name)) | |
d4c83cae | 3220 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3221 | else |
3222 | { | |
b7826503 | 3223 | CHECK_STRING (name); |
d007f5c8 RS |
3224 | string = name; |
3225 | } | |
3226 | ||
d5db4077 KR |
3227 | tem = oblookup (obarray, SDATA (string), |
3228 | SCHARS (string), | |
3229 | SBYTES (string)); | |
d007f5c8 RS |
3230 | if (INTEGERP (tem)) |
3231 | return Qnil; | |
3232 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3233 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3234 | return Qnil; | |
3235 | ||
44c6c019 GM |
3236 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3237 | XSYMBOL (tem)->constant = 0; | |
3238 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3239 | |
d007f5c8 RS |
3240 | hash = oblookup_last_bucket_number; |
3241 | ||
3242 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3243 | { |
3244 | if (XSYMBOL (tem)->next) | |
3245 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3246 | else | |
3247 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3248 | } | |
d007f5c8 RS |
3249 | else |
3250 | { | |
3251 | Lisp_Object tail, following; | |
3252 | ||
3253 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3254 | XSYMBOL (tail)->next; | |
3255 | tail = following) | |
3256 | { | |
3257 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3258 | if (EQ (following, tem)) | |
3259 | { | |
3260 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3261 | break; | |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | ||
3266 | return Qt; | |
3267 | } | |
3268 | \f | |
3269 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3270 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3271 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3272 | |
3273 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3274 | |
3275 | Lisp_Object | |
e28552a4 | 3276 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3277 | Lisp_Object obarray; |
4b2dd274 | 3278 | register const char *ptr; |
e28552a4 | 3279 | int size, size_byte; |
078e7b4a | 3280 | { |
7a70b397 RS |
3281 | int hash; |
3282 | int obsize; | |
078e7b4a JB |
3283 | register Lisp_Object tail; |
3284 | Lisp_Object bucket, tem; | |
3285 | ||
cfff016d | 3286 | if (!VECTORP (obarray) |
7c79a684 | 3287 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3288 | { |
3289 | obarray = check_obarray (obarray); | |
3290 | obsize = XVECTOR (obarray)->size; | |
3291 | } | |
519418b3 RS |
3292 | /* This is sometimes needed in the middle of GC. */ |
3293 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3294 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3295 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3296 | hash %= obsize; |
3297 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3298 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3299 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3300 | ; |
cfff016d | 3301 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3302 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3303 | else |
3304 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3305 | { |
d5db4077 KR |
3306 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3307 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3308 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3309 | return tail; |
3310 | else if (XSYMBOL (tail)->next == 0) | |
3311 | break; | |
3312 | } | |
1805de4f | 3313 | XSETINT (tem, hash); |
078e7b4a JB |
3314 | return tem; |
3315 | } | |
3316 | ||
3317 | static int | |
3318 | hash_string (ptr, len) | |
4b2dd274 | 3319 | const unsigned char *ptr; |
078e7b4a JB |
3320 | int len; |
3321 | { | |
4b2dd274 KR |
3322 | register const unsigned char *p = ptr; |
3323 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3324 | register unsigned char c; |
3325 | register int hash = 0; | |
3326 | ||
3327 | while (p != end) | |
3328 | { | |
3329 | c = *p++; | |
3330 | if (c >= 0140) c -= 40; | |
3331 | hash = ((hash<<3) + (hash>>28) + c); | |
3332 | } | |
3333 | return hash & 07777777777; | |
3334 | } | |
d007f5c8 | 3335 | \f |
078e7b4a JB |
3336 | void |
3337 | map_obarray (obarray, fn, arg) | |
3338 | Lisp_Object obarray; | |
d5b28a9d | 3339 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3340 | Lisp_Object arg; |
3341 | { | |
3342 | register int i; | |
3343 | register Lisp_Object tail; | |
b7826503 | 3344 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3345 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3346 | { | |
3347 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3348 | if (SYMBOLP (tail)) |
078e7b4a JB |
3349 | while (1) |
3350 | { | |
3351 | (*fn) (tail, arg); | |
3352 | if (XSYMBOL (tail)->next == 0) | |
3353 | break; | |
1805de4f | 3354 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3355 | } |
3356 | } | |
3357 | } | |
3358 | ||
d5b28a9d | 3359 | void |
078e7b4a JB |
3360 | mapatoms_1 (sym, function) |
3361 | Lisp_Object sym, function; | |
3362 | { | |
3363 | call1 (function, sym); | |
3364 | } | |
3365 | ||
3366 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3367 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3368 | OBARRAY defaults to the value of `obarray'. */) | |
3369 | (function, obarray) | |
078e7b4a JB |
3370 | Lisp_Object function, obarray; |
3371 | { | |
265a9e55 | 3372 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3373 | obarray = check_obarray (obarray); |
3374 | ||
3375 | map_obarray (obarray, mapatoms_1, function); | |
3376 | return Qnil; | |
3377 | } | |
3378 | ||
5e88a39e | 3379 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3380 | |
3381 | void | |
3382 | init_obarray () | |
3383 | { | |
3384 | Lisp_Object oblength; | |
3385 | int hash; | |
3386 | Lisp_Object *tem; | |
3387 | ||
baf69866 | 3388 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3389 | |
491f16a2 | 3390 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3391 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3392 | initial_obarray = Vobarray; | |
3393 | staticpro (&initial_obarray); | |
3394 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3395 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3396 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3397 | |
078e7b4a JB |
3398 | /* These locals are to kludge around a pyramid compiler bug. */ |
3399 | hash = hash_string ("nil", 3); | |
3400 | /* Separate statement here to avoid VAXC bug. */ | |
3401 | hash %= OBARRAY_SIZE; | |
3402 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3403 | *tem = Qnil; | |
3404 | ||
491f16a2 | 3405 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3406 | XSYMBOL (Qnil)->function = Qunbound; |
3407 | XSYMBOL (Qunbound)->value = Qunbound; | |
3408 | XSYMBOL (Qunbound)->function = Qunbound; | |
3409 | ||
3410 | Qt = intern ("t"); | |
3411 | XSYMBOL (Qnil)->value = Qnil; | |
3412 | XSYMBOL (Qnil)->plist = Qnil; | |
3413 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3414 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3415 | |
3416 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3417 | Vpurify_flag = Qt; | |
3418 | ||
3419 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3420 | staticpro (&Qvariable_documentation); |
078e7b4a | 3421 | |
449fea39 | 3422 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3423 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3424 | } |
3425 | \f | |
3426 | void | |
3427 | defsubr (sname) | |
3428 | struct Lisp_Subr *sname; | |
3429 | { | |
3430 | Lisp_Object sym; | |
3431 | sym = intern (sname->symbol_name); | |
1805de4f | 3432 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3433 | } |
3434 | ||
3435 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3436 | void | |
3437 | defalias (sname, string) | |
3438 | struct Lisp_Subr *sname; | |
3439 | char *string; | |
3440 | { | |
3441 | Lisp_Object sym; | |
3442 | sym = intern (string); | |
1805de4f | 3443 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3444 | } |
3445 | #endif /* NOTDEF */ | |
3446 | ||
078e7b4a | 3447 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3448 | to a C variable of type int. Sample call: */ |
5de38842 | 3449 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3450 | void |
e9e00ff2 | 3451 | defvar_int (namestring, address) |
078e7b4a | 3452 | char *namestring; |
31ade731 | 3453 | EMACS_INT *address; |
078e7b4a | 3454 | { |
1a0f90f7 | 3455 | Lisp_Object sym, val; |
078e7b4a | 3456 | sym = intern (namestring); |
1a0f90f7 | 3457 | val = allocate_misc (); |
47e28b2c | 3458 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3459 | XINTFWD (val)->intvar = address; |
44c6c019 | 3460 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3461 | } |
3462 | ||
f0529b5b PJ |
3463 | /* Similar but define a variable whose value is t if address contains 1, |
3464 | nil if address contains 0 */ | |
078e7b4a | 3465 | void |
e9e00ff2 | 3466 | defvar_bool (namestring, address) |
078e7b4a JB |
3467 | char *namestring; |
3468 | int *address; | |
078e7b4a | 3469 | { |
1a0f90f7 | 3470 | Lisp_Object sym, val; |
078e7b4a | 3471 | sym = intern (namestring); |
1a0f90f7 | 3472 | val = allocate_misc (); |
47e28b2c | 3473 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3474 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3475 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3476 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3477 | } |
3478 | ||
1a0f90f7 KH |
3479 | /* Similar but define a variable whose value is the Lisp Object stored |
3480 | at address. Two versions: with and without gc-marking of the C | |
3481 | variable. The nopro version is used when that variable will be | |
3482 | gc-marked for some other reason, since marking the same slot twice | |
3483 | can cause trouble with strings. */ | |
078e7b4a | 3484 | void |
1a0f90f7 | 3485 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3486 | char *namestring; |
3487 | Lisp_Object *address; | |
078e7b4a | 3488 | { |
1a0f90f7 | 3489 | Lisp_Object sym, val; |
078e7b4a | 3490 | sym = intern (namestring); |
1a0f90f7 | 3491 | val = allocate_misc (); |
47e28b2c | 3492 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3493 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3494 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3495 | } |
3496 | ||
078e7b4a | 3497 | void |
1a0f90f7 | 3498 | defvar_lisp (namestring, address) |
078e7b4a JB |
3499 | char *namestring; |
3500 | Lisp_Object *address; | |
078e7b4a | 3501 | { |
1a0f90f7 KH |
3502 | defvar_lisp_nopro (namestring, address); |
3503 | staticpro (address); | |
078e7b4a JB |
3504 | } |
3505 | ||
078e7b4a | 3506 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3507 | the current buffer. address is the address of the slot in the buffer |
3508 | that is current now. */ | |
078e7b4a JB |
3509 | |
3510 | void | |
4360b0c6 | 3511 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3512 | char *namestring; |
3513 | Lisp_Object *address; | |
4360b0c6 | 3514 | Lisp_Object type; |
078e7b4a JB |
3515 | char *doc; |
3516 | { | |
1a0f90f7 | 3517 | Lisp_Object sym, val; |
078e7b4a | 3518 | int offset; |
078e7b4a JB |
3519 | |
3520 | sym = intern (namestring); | |
1a0f90f7 | 3521 | val = allocate_misc (); |
078e7b4a JB |
3522 | offset = (char *)address - (char *)current_buffer; |
3523 | ||
47e28b2c | 3524 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3525 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3526 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3527 | PER_BUFFER_SYMBOL (offset) = sym; |
3528 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3529 | |
11fd416e | 3530 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3531 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3532 | slot of buffer_local_flags */ | |
3533 | abort (); | |
3534 | } | |
3535 | ||
950c215d KH |
3536 | |
3537 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3538 | at a particular offset in the current kboard object. */ |
950c215d KH |
3539 | |
3540 | void | |
4ac38690 | 3541 | defvar_kboard (namestring, offset) |
950c215d KH |
3542 | char *namestring; |
3543 | int offset; | |
3544 | { | |
3545 | Lisp_Object sym, val; | |
3546 | sym = intern (namestring); | |
3547 | val = allocate_misc (); | |
47e28b2c | 3548 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3549 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3550 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3551 | } |
078e7b4a | 3552 | \f |
11938f10 KH |
3553 | /* Record the value of load-path used at the start of dumping |
3554 | so we can see if the site changed it later during dumping. */ | |
3555 | static Lisp_Object dump_path; | |
3556 | ||
d5b28a9d | 3557 | void |
279499f0 | 3558 | init_lread () |
078e7b4a | 3559 | { |
46947372 | 3560 | char *normal; |
e73997a1 | 3561 | int turn_off_warning = 0; |
078e7b4a | 3562 | |
279499f0 | 3563 | /* Compute the default load-path. */ |
46947372 JB |
3564 | #ifdef CANNOT_DUMP |
3565 | normal = PATH_LOADSEARCH; | |
e065a56e | 3566 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3567 | #else |
3568 | if (NILP (Vpurify_flag)) | |
3569 | normal = PATH_LOADSEARCH; | |
279499f0 | 3570 | else |
46947372 | 3571 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3572 | |
46947372 JB |
3573 | /* In a dumped Emacs, we normally have to reset the value of |
3574 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3575 | uses ../lisp, instead of the path of the installed elisp | |
3576 | libraries. However, if it appears that Vload_path was changed | |
3577 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3578 | if (initialized) |
3579 | { | |
4746118a | 3580 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3581 | { |
3582 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3583 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3584 | { |
3ddff138 RS |
3585 | Lisp_Object tem, tem1, sitelisp; |
3586 | ||
3587 | /* Remove site-lisp dirs from path temporarily and store | |
3588 | them in sitelisp, then conc them on at the end so | |
3589 | they're always first in path. */ | |
3590 | sitelisp = Qnil; | |
3591 | while (1) | |
3592 | { | |
3593 | tem = Fcar (Vload_path); | |
3594 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3595 | tem, Qnil); | |
3596 | if (!NILP (tem1)) | |
3597 | { | |
3598 | Vload_path = Fcdr (Vload_path); | |
3599 | sitelisp = Fcons (tem, sitelisp); | |
3600 | } | |
3601 | else | |
3602 | break; | |
3603 | } | |
3604 | ||
74180aa4 | 3605 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3606 | installation dir, if it exists. */ |
74180aa4 RS |
3607 | tem = Fexpand_file_name (build_string ("lisp"), |
3608 | Vinstallation_directory); | |
3a3056e5 RS |
3609 | tem1 = Ffile_exists_p (tem); |
3610 | if (!NILP (tem1)) | |
3611 | { | |
3612 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3613 | { |
3614 | turn_off_warning = 1; | |
3ddff138 | 3615 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3616 | } |
3a3056e5 RS |
3617 | } |
3618 | else | |
3619 | /* That dir doesn't exist, so add the build-time | |
3620 | Lisp dirs instead. */ | |
3621 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3622 | |
9fbc0116 RS |
3623 | /* Add leim under the installation dir, if it exists. */ |
3624 | tem = Fexpand_file_name (build_string ("leim"), | |
3625 | Vinstallation_directory); | |
3626 | tem1 = Ffile_exists_p (tem); | |
3627 | if (!NILP (tem1)) | |
3628 | { | |
3629 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3630 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3631 | } |
3632 | ||
c478f98c RS |
3633 | /* Add site-list under the installation dir, if it exists. */ |
3634 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3635 | Vinstallation_directory); | |
3636 | tem1 = Ffile_exists_p (tem); | |
3637 | if (!NILP (tem1)) | |
3638 | { | |
3639 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3640 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3641 | } |
0f337465 RS |
3642 | |
3643 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3644 | and it is run from where it was built, add to load-path |
3645 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3646 | |
3647 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3648 | { | |
33046fc9 RS |
3649 | Lisp_Object tem2; |
3650 | ||
0f337465 RS |
3651 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3652 | Vinstallation_directory); | |
3653 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3654 | |
3655 | /* Don't be fooled if they moved the entire source tree | |
3656 | AFTER dumping Emacs. If the build directory is indeed | |
3657 | different from the source dir, src/Makefile.in and | |
3658 | src/Makefile will not be found together. */ | |
3659 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3660 | Vinstallation_directory); | |
3661 | tem2 = Ffile_exists_p (tem); | |
3662 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3663 | { |
3664 | tem = Fexpand_file_name (build_string ("lisp"), | |
3665 | Vsource_directory); | |
3666 | ||
3667 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3668 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3669 | |
9fbc0116 RS |
3670 | tem = Fexpand_file_name (build_string ("leim"), |
3671 | Vsource_directory); | |
3672 | ||
3673 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3674 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3675 | |
0f337465 RS |
3676 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3677 | Vsource_directory); | |
3678 | ||
3679 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3680 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3681 | } |
3682 | } | |
3ddff138 RS |
3683 | if (!NILP (sitelisp)) |
3684 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3685 | } |
3686 | } | |
4746118a JB |
3687 | } |
3688 | else | |
11938f10 | 3689 | { |
7b396c6c RS |
3690 | /* NORMAL refers to the lisp dir in the source directory. */ |
3691 | /* We used to add ../lisp at the front here, but | |
3692 | that caused trouble because it was copied from dump_path | |
3693 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3694 | It should be unnecessary. */ | |
3695 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3696 | dump_path = Vload_path; |
3697 | } | |
46947372 | 3698 | #endif |
279499f0 | 3699 | |
536d6baa | 3700 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3701 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3702 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3703 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3704 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3705 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3706 | the "standard" paths may not exist and would be overridden by | |
3707 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3708 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3709 | |
078e7b4a | 3710 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3711 | if (!turn_off_warning) |
3712 | { | |
3713 | Lisp_Object path_tail; | |
078e7b4a | 3714 | |
e73997a1 RS |
3715 | for (path_tail = Vload_path; |
3716 | !NILP (path_tail); | |
c1d497be | 3717 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3718 | { |
3719 | Lisp_Object dirfile; | |
3720 | dirfile = Fcar (path_tail); | |
3721 | if (STRINGP (dirfile)) | |
3722 | { | |
3723 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3724 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3725 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3726 | XCAR (path_tail)); |
e73997a1 RS |
3727 | } |
3728 | } | |
3729 | } | |
536d6baa | 3730 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3731 | |
3732 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3733 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3734 | #ifndef CANNOT_DUMP |
46947372 JB |
3735 | if (NILP (Vpurify_flag) |
3736 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3737 | #endif |
279499f0 | 3738 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3739 | |
3740 | Vvalues = Qnil; | |
3741 | ||
078e7b4a | 3742 | load_in_progress = 0; |
4e53f562 | 3743 | Vload_file_name = Qnil; |
d2c6be7f RS |
3744 | |
3745 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3746 | |
3747 | Vstandard_input = Qt; | |
f74b0705 | 3748 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3749 | } |
3750 | ||
85496b8c RS |
3751 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3752 | does not exist. Print it on stderr and put it in *Message*. */ | |
3753 | ||
d5b28a9d | 3754 | void |
85496b8c RS |
3755 | dir_warning (format, dirname) |
3756 | char *format; | |
3757 | Lisp_Object dirname; | |
3758 | { | |
3759 | char *buffer | |
d5db4077 | 3760 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3761 | |
d5db4077 KR |
3762 | fprintf (stderr, format, SDATA (dirname)); |
3763 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
3764 | /* Don't log the warning before we've initialized!! */ |
3765 | if (initialized) | |
3766 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3767 | } |
3768 | ||
078e7b4a | 3769 | void |
279499f0 | 3770 | syms_of_lread () |
078e7b4a JB |
3771 | { |
3772 | defsubr (&Sread); | |
3773 | defsubr (&Sread_from_string); | |
3774 | defsubr (&Sintern); | |
3775 | defsubr (&Sintern_soft); | |
d007f5c8 | 3776 | defsubr (&Sunintern); |
078e7b4a | 3777 | defsubr (&Sload); |
228d4b1c | 3778 | defsubr (&Seval_buffer); |
078e7b4a JB |
3779 | defsubr (&Seval_region); |
3780 | defsubr (&Sread_char); | |
3781 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3782 | defsubr (&Sread_event); |
078e7b4a JB |
3783 | defsubr (&Sget_file_char); |
3784 | defsubr (&Smapatoms); | |
86d00812 | 3785 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
3786 | |
3787 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
3788 | doc: /* Symbol table for use by `intern' and `read'. |
3789 | It is a vector whose length ought to be prime for best results. | |
3790 | The vector's contents don't make sense if examined from Lisp programs; | |
3791 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
3792 | |
3793 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
3794 | doc: /* List of values of all expressions which were read, evaluated and printed. |
3795 | Order is reverse chronological. */); | |
078e7b4a JB |
3796 | |
3797 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
3798 | doc: /* Stream for read to get input from. |
3799 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
3800 | Vstandard_input = Qt; |
3801 | ||
abb13b09 CW |
3802 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
3803 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
3804 | ||
3805 | If this variable is a buffer, then only forms read from that buffer | |
3806 | will be added to `read-symbol-positions-list'. | |
3807 | If this variable is t, then all read forms will be added. | |
3808 | The effect of all other values other than nil are not currently | |
3809 | defined, although they may be in the future. | |
3810 | ||
3811 | The positions are relative to the last call to `read' or | |
3812 | `read-from-string'. It is probably a bad idea to set this variable at | |
3813 | the toplevel; bind it instead. */); | |
3814 | Vread_with_symbol_positions = Qnil; | |
3815 | ||
3816 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 3817 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
3818 | This variable is modified during calls to `read' or |
3819 | `read-from-string', but only when `read-with-symbol-positions' is | |
3820 | non-nil. | |
3821 | ||
3822 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 3823 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
3824 | symbol from the position where `read' or `read-from-string' started. |
3825 | ||
3826 | Note that a symbol will appear multiple times in this list, if it was | |
3827 | read multiple times. The list is in the same order as the symbols | |
3828 | were read in. */); | |
177c0ea7 | 3829 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 3830 | |
078e7b4a | 3831 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
3832 | doc: /* *List of directories to search for files to load. |
3833 | Each element is a string (directory name) or nil (try default directory). | |
3834 | Initialized based on EMACSLOADPATH environment variable, if any, | |
3835 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 3836 | |
e61b9b87 | 3837 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
5de38842 PJ |
3838 | doc: /* *List of suffixes to try for files to load. |
3839 | This list should not include the empty string. */); | |
e61b9b87 SM |
3840 | Vload_suffixes = Fcons (build_string (".elc"), |
3841 | Fcons (build_string (".el"), Qnil)); | |
ddb716ef SM |
3842 | /* We don't use empty_string because it's not initialized yet. */ |
3843 | default_suffixes = Fcons (build_string (""), Qnil); | |
e61b9b87 SM |
3844 | staticpro (&default_suffixes); |
3845 | ||
078e7b4a | 3846 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
5de38842 | 3847 | doc: /* Non-nil iff inside of `load'. */); |
078e7b4a JB |
3848 | |
3849 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 PJ |
3850 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
3851 | Each element looks like (FILENAME FORMS...). | |
3852 | When `load' is run and the file-name argument is FILENAME, | |
3853 | the FORMS in the corresponding element are executed at the end of loading. | |
3854 | ||
3855 | FILENAME must match exactly! Normally FILENAME is the name of a library, | |
3856 | with no directory specified, since that is how `load' is normally called. | |
3857 | An error in FORMS does not undo the load, | |
3858 | but does prevent execution of the rest of the FORMS. | |
3859 | FILENAME can also be a symbol (a feature) and FORMS are then executed | |
3860 | when the corresponding call to `provide' is made. */); | |
078e7b4a JB |
3861 | Vafter_load_alist = Qnil; |
3862 | ||
ae321d28 | 3863 | DEFVAR_LISP ("load-history", &Vload_history, |
5de38842 PJ |
3864 | doc: /* Alist mapping source file names to symbols and features. |
3865 | Each alist element is a list that starts with a file name, | |
3866 | except for one element (optional) that starts with nil and describes | |
3867 | definitions evaluated from buffers not visiting files. | |
1bc2cdb1 | 3868 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 3869 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
1bc2cdb1 RS |
3870 | `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'. |
3871 | An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)', | |
6042a06e RS |
3872 | and means that SYMBOL was an autoload before this file redefined it |
3873 | as a function. */); | |
ae321d28 RS |
3874 | Vload_history = Qnil; |
3875 | ||
20ea2964 | 3876 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 3877 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
3878 | Vload_file_name = Qnil; |
3879 | ||
4116ab9f | 3880 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 3881 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
3882 | If the file loaded had extension `.elc', and the corresponding source file |
3883 | exists, this variable contains the name of source file, suitable for use | |
5de38842 | 3884 | by functions like `custom-save-all' which edit the init file. */); |
4116ab9f KH |
3885 | Vuser_init_file = Qnil; |
3886 | ||
8a1f1537 | 3887 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 3888 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
3889 | Vcurrent_load_list = Qnil; |
3890 | ||
84a15045 | 3891 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
3892 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
3893 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
3894 | Vload_read_function = Qnil; |
3895 | ||
fe0e03f3 | 3896 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
5de38842 PJ |
3897 | doc: /* Function called in `load' for loading an Emacs lisp source file. |
3898 | This function is for doing code conversion before reading the source file. | |
3899 | If nil, loading is done without any code conversion. | |
3900 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
3901 | FULLNAME is the full name of FILE. | |
3902 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
3903 | Vload_source_file_function = Qnil; |
3904 | ||
b2a30870 | 3905 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
3906 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
3907 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
3908 | load_force_doc_strings = 0; |
3909 | ||
94e554db | 3910 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
3911 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
3912 | This is normally bound by `load' and `eval-buffer' to control `read', | |
3913 | and is not meant for users to change. */); | |
94e554db RS |
3914 | load_convert_to_unibyte = 0; |
3915 | ||
1521a8fa | 3916 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
3917 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
3918 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
3919 | Vsource_directory |
3920 | = Fexpand_file_name (build_string ("../"), | |
3921 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3922 | ||
4b104c41 | 3923 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 3924 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
3925 | Vpreloaded_file_list = Qnil; |
3926 | ||
1ffcc3b1 | 3927 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 3928 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
3929 | Vbyte_boolean_vars = Qnil; |
3930 | ||
da84f340 | 3931 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
3932 | doc: /* Non-nil means load dangerous compiled Lisp files. |
3933 | Some versions of XEmacs use different byte codes than Emacs. These | |
3934 | incompatible byte codes can make Emacs crash when it tries to execute | |
3935 | them. */); | |
da84f340 GM |
3936 | load_dangerous_libraries = 0; |
3937 | ||
bb970e67 | 3938 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
3939 | doc: /* Regular expression matching safe to load compiled Lisp files. |
3940 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
3941 | from the file, and matches them against this regular expression. | |
3942 | When the regular expression matches, the file is considered to be safe | |
3943 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 3944 | Vbytecomp_version_regexp |
f2e7d5eb | 3945 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 3946 | |
a90ba1e2 KH |
3947 | /* Vsource_directory was initialized in init_lread. */ |
3948 | ||
d2c6be7f RS |
3949 | load_descriptor_list = Qnil; |
3950 | staticpro (&load_descriptor_list); | |
3951 | ||
8a1f1537 RS |
3952 | Qcurrent_load_list = intern ("current-load-list"); |
3953 | staticpro (&Qcurrent_load_list); | |
3954 | ||
078e7b4a JB |
3955 | Qstandard_input = intern ("standard-input"); |
3956 | staticpro (&Qstandard_input); | |
3957 | ||
3958 | Qread_char = intern ("read-char"); | |
3959 | staticpro (&Qread_char); | |
3960 | ||
3961 | Qget_file_char = intern ("get-file-char"); | |
3962 | staticpro (&Qget_file_char); | |
7bd279cd | 3963 | |
17634846 RS |
3964 | Qbackquote = intern ("`"); |
3965 | staticpro (&Qbackquote); | |
3966 | Qcomma = intern (","); | |
3967 | staticpro (&Qcomma); | |
3968 | Qcomma_at = intern (",@"); | |
3969 | staticpro (&Qcomma_at); | |
3970 | Qcomma_dot = intern (",."); | |
3971 | staticpro (&Qcomma_dot); | |
3972 | ||
74549846 RS |
3973 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3974 | staticpro (&Qinhibit_file_name_operation); | |
3975 | ||
7bd279cd RS |
3976 | Qascii_character = intern ("ascii-character"); |
3977 | staticpro (&Qascii_character); | |
c2225d00 | 3978 | |
2b6cae0c RS |
3979 | Qfunction = intern ("function"); |
3980 | staticpro (&Qfunction); | |
3981 | ||
c2225d00 RS |
3982 | Qload = intern ("load"); |
3983 | staticpro (&Qload); | |
20ea2964 RS |
3984 | |
3985 | Qload_file_name = intern ("load-file-name"); | |
3986 | staticpro (&Qload_file_name); | |
11938f10 KH |
3987 | |
3988 | staticpro (&dump_path); | |
4ad679f9 EN |
3989 | |
3990 | staticpro (&read_objects); | |
3991 | read_objects = Qnil; | |
9e062b6c | 3992 | staticpro (&seen_list); |
177c0ea7 | 3993 | |
7ee3bd7b GM |
3994 | Vloads_in_progress = Qnil; |
3995 | staticpro (&Vloads_in_progress); | |
078e7b4a | 3996 | } |
ab5796a9 MB |
3997 | |
3998 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
3999 | (do not change this comment) */ |