Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
31c8f881 | 2 | Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 1998 |
33046fc9 | 3 | 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 JB |
29 | #include "lisp.h" |
30 | ||
31 | #ifndef standalone | |
32 | #include "buffer.h" | |
fe0e03f3 | 33 | #include "charset.h" |
57bda87a | 34 | #include <epaths.h> |
078e7b4a | 35 | #include "commands.h" |
e37c0805 | 36 | #include "keyboard.h" |
7bd279cd | 37 | #include "termhooks.h" |
078e7b4a JB |
38 | #endif |
39 | ||
40 | #ifdef lint | |
41 | #include <sys/inode.h> | |
42 | #endif /* lint */ | |
43 | ||
79051982 RS |
44 | #ifdef MSDOS |
45 | #if __DJGPP__ < 2 | |
46 | #include <unistd.h> /* to get X_OK */ | |
47 | #endif | |
48 | #include "msdos.h" | |
49 | #endif | |
50 | ||
c1a2f60a AS |
51 | #ifdef HAVE_UNISTD_H |
52 | #include <unistd.h> | |
53 | #endif | |
54 | ||
078e7b4a JB |
55 | #ifndef X_OK |
56 | #define X_OK 01 | |
57 | #endif | |
58 | ||
59 | #ifdef LISP_FLOAT_TYPE | |
93b91208 JB |
60 | #ifdef STDC_HEADERS |
61 | #include <stdlib.h> | |
62 | #endif | |
23a71bd6 | 63 | |
078e7b4a JB |
64 | #include <math.h> |
65 | #endif /* LISP_FLOAT_TYPE */ | |
66 | ||
c011e9a5 RS |
67 | #ifdef HAVE_SETLOCALE |
68 | #include <locale.h> | |
69 | #endif /* HAVE_SETLOCALE */ | |
70 | ||
f7d279f0 RS |
71 | #ifndef O_RDONLY |
72 | #define O_RDONLY 0 | |
73 | #endif | |
74 | ||
2c1b5dbe KH |
75 | extern int errno; |
76 | ||
8a1f1537 | 77 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 78 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 79 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 80 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 81 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
82 | |
83 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 84 | extern Lisp_Object Qfile_exists_p; |
078e7b4a JB |
85 | |
86 | /* non-zero if inside `load' */ | |
87 | int load_in_progress; | |
88 | ||
1521a8fa RS |
89 | /* Directory in which the sources were found. */ |
90 | Lisp_Object Vsource_directory; | |
91 | ||
078e7b4a JB |
92 | /* Search path for files to be loaded. */ |
93 | Lisp_Object Vload_path; | |
94 | ||
4116ab9f KH |
95 | /* File name of user's init file. */ |
96 | Lisp_Object Vuser_init_file; | |
97 | ||
ae321d28 RS |
98 | /* This is the user-visible association list that maps features to |
99 | lists of defs in their load files. */ | |
100 | Lisp_Object Vload_history; | |
101 | ||
20ea2964 | 102 | /* This is used to build the load history. */ |
ae321d28 RS |
103 | Lisp_Object Vcurrent_load_list; |
104 | ||
4b104c41 RS |
105 | /* List of files that were preloaded. */ |
106 | Lisp_Object Vpreloaded_file_list; | |
107 | ||
20ea2964 RS |
108 | /* Name of file actually being read by `load'. */ |
109 | Lisp_Object Vload_file_name; | |
110 | ||
84a15045 RS |
111 | /* Function to use for reading, in `load' and friends. */ |
112 | Lisp_Object Vload_read_function; | |
113 | ||
4ad679f9 EN |
114 | /* The association list of objects read with the #n=object form. |
115 | Each member of the list has the form (n . object), and is used to | |
116 | look up the object for the corresponding #n# construct. | |
117 | It must be set to nil before all top-level calls to read0. */ | |
118 | Lisp_Object read_objects; | |
119 | ||
b2a30870 RS |
120 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
121 | static int load_force_doc_strings; | |
122 | ||
94e554db RS |
123 | /* Nonzero means read should convert strings to unibyte. */ |
124 | static int load_convert_to_unibyte; | |
125 | ||
fe0e03f3 KH |
126 | /* Function to use for loading an Emacs lisp source file (not |
127 | compiled) instead of readevalloop. */ | |
128 | Lisp_Object Vload_source_file_function; | |
129 | ||
d2c6be7f RS |
130 | /* List of descriptors now open for Fload. */ |
131 | static Lisp_Object load_descriptor_list; | |
132 | ||
b2a30870 | 133 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
134 | static FILE *instream; |
135 | ||
136 | /* When nonzero, read conses in pure space */ | |
137 | static int read_pure; | |
138 | ||
b2a30870 | 139 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 140 | static int read_from_string_index; |
bed23cb2 | 141 | static int read_from_string_index_byte; |
078e7b4a | 142 | static int read_from_string_limit; |
17634846 | 143 | |
6f7f43d5 RS |
144 | /* Number of bytes left to read in the buffer character |
145 | that `readchar' has already advanced over. */ | |
146 | static int readchar_backlog; | |
147 | ||
c15cfd1f | 148 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
149 | static char *saved_doc_string; |
150 | /* Length of buffer allocated in saved_doc_string. */ | |
151 | static int saved_doc_string_size; | |
152 | /* Length of actual data in saved_doc_string. */ | |
153 | static int saved_doc_string_length; | |
154 | /* This is the file position that string came from. */ | |
155 | static int saved_doc_string_position; | |
156 | ||
c15cfd1f RS |
157 | /* This contains the previous string skipped with #@. |
158 | We copy it from saved_doc_string when a new string | |
159 | is put in saved_doc_string. */ | |
160 | static char *prev_saved_doc_string; | |
161 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
162 | static int prev_saved_doc_string_size; | |
163 | /* Length of actual data in prev_saved_doc_string. */ | |
164 | static int prev_saved_doc_string_length; | |
165 | /* This is the file position that string came from. */ | |
166 | static int prev_saved_doc_string_position; | |
167 | ||
17634846 RS |
168 | /* Nonzero means inside a new-style backquote |
169 | with no surrounding parentheses. | |
170 | Fread initializes this to zero, so we need not specbind it | |
171 | or worry about what happens to it when there is an error. */ | |
172 | static int new_backquote_flag; | |
078e7b4a JB |
173 | \f |
174 | /* Handle unreading and rereading of characters. | |
175 | Write READCHAR to read a character, | |
fe0e03f3 KH |
176 | UNREAD(c) to unread c to be read again. |
177 | ||
178 | These macros actually read/unread a byte code, multibyte characters | |
179 | are not handled here. The caller should manage them if necessary. | |
180 | */ | |
078e7b4a JB |
181 | |
182 | #define READCHAR readchar (readcharfun) | |
183 | #define UNREAD(c) unreadchar (readcharfun, c) | |
184 | ||
185 | static int | |
186 | readchar (readcharfun) | |
187 | Lisp_Object readcharfun; | |
188 | { | |
189 | Lisp_Object tem; | |
078e7b4a JB |
190 | register int c, mpos; |
191 | ||
cfff016d | 192 | if (BUFFERP (readcharfun)) |
078e7b4a | 193 | { |
bed23cb2 | 194 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 195 | |
bed23cb2 RS |
196 | int pt_byte = BUF_PT_BYTE (inbuffer); |
197 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 198 | |
00a9a935 RS |
199 | if (readchar_backlog > 0) |
200 | /* We get the address of the byte just passed, | |
201 | which is the last byte of the character. | |
202 | The other bytes in this character are consecutive with it, | |
203 | because the gap can't be in the middle of a character. */ | |
204 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
205 | - --readchar_backlog); | |
206 | ||
bed23cb2 RS |
207 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
208 | return -1; | |
078e7b4a | 209 | |
00a9a935 RS |
210 | readchar_backlog = -1; |
211 | ||
bed23cb2 RS |
212 | if (! NILP (inbuffer->enable_multibyte_characters)) |
213 | { | |
00a9a935 RS |
214 | unsigned char workbuf[4]; |
215 | unsigned char *str = workbuf; | |
216 | int length; | |
217 | ||
218 | /* Fetch the character code from the buffer. */ | |
bed23cb2 RS |
219 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
220 | BUF_INC_POS (inbuffer, pt_byte); | |
221 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
00a9a935 RS |
222 | |
223 | /* Find the byte-sequence representation of that character. */ | |
224 | if (SINGLE_BYTE_CHAR_P (c)) | |
225 | length = 1, workbuf[0] = c; | |
226 | else | |
227 | length = non_ascii_char_to_string (c, workbuf, &str); | |
228 | ||
229 | /* If the bytes for this character in the buffer | |
230 | are not identical with what the character code implies, | |
231 | read the bytes one by one from the buffer. */ | |
232 | if (length != pt_byte - orig_pt_byte | |
233 | || (length == 1 ? *str != *p : bcmp (str, p, length))) | |
234 | { | |
235 | readchar_backlog = pt_byte - orig_pt_byte; | |
236 | c = BUF_FETCH_BYTE (inbuffer, orig_pt_byte); | |
237 | readchar_backlog--; | |
238 | } | |
bed23cb2 RS |
239 | } |
240 | else | |
241 | { | |
242 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
243 | pt_byte++; | |
6f7f43d5 | 244 | } |
bed23cb2 | 245 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 246 | |
bed23cb2 | 247 | return c; |
078e7b4a | 248 | } |
cfff016d | 249 | if (MARKERP (readcharfun)) |
078e7b4a | 250 | { |
bed23cb2 | 251 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 252 | |
bed23cb2 RS |
253 | int bytepos = marker_byte_position (readcharfun); |
254 | int orig_bytepos = bytepos; | |
6f7f43d5 | 255 | |
00a9a935 RS |
256 | if (readchar_backlog > 0) |
257 | /* We get the address of the byte just passed, | |
258 | which is the last byte of the character. | |
259 | The other bytes in this character are consecutive with it, | |
260 | because the gap can't be in the middle of a character. */ | |
261 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
262 | - --readchar_backlog); | |
263 | ||
bed23cb2 RS |
264 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
265 | return -1; | |
6f7f43d5 | 266 | |
00a9a935 RS |
267 | readchar_backlog = -1; |
268 | ||
bed23cb2 RS |
269 | if (! NILP (inbuffer->enable_multibyte_characters)) |
270 | { | |
00a9a935 RS |
271 | unsigned char workbuf[4]; |
272 | unsigned char *str = workbuf; | |
273 | int length; | |
274 | ||
275 | /* Fetch the character code from the buffer. */ | |
bed23cb2 RS |
276 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
277 | BUF_INC_POS (inbuffer, bytepos); | |
278 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
00a9a935 RS |
279 | |
280 | /* Find the byte-sequence representation of that character. */ | |
281 | if (SINGLE_BYTE_CHAR_P (c)) | |
282 | length = 1, workbuf[0] = c; | |
283 | else | |
284 | length = non_ascii_char_to_string (c, workbuf, &str); | |
285 | ||
286 | /* If the bytes for this character in the buffer | |
287 | are not identical with what the character code implies, | |
288 | read the bytes one by one from the buffer. */ | |
289 | if (length != bytepos - orig_bytepos | |
290 | || (length == 1 ? *str != *p : bcmp (str, p, length))) | |
291 | { | |
292 | readchar_backlog = bytepos - orig_bytepos; | |
293 | c = BUF_FETCH_BYTE (inbuffer, orig_bytepos); | |
294 | readchar_backlog--; | |
295 | } | |
bed23cb2 RS |
296 | } |
297 | else | |
298 | { | |
299 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
300 | bytepos++; | |
6f7f43d5 RS |
301 | } |
302 | ||
bed23cb2 RS |
303 | XMARKER (readcharfun)->bytepos = bytepos; |
304 | XMARKER (readcharfun)->charpos++; | |
305 | ||
306 | return c; | |
078e7b4a | 307 | } |
ad0153e4 RS |
308 | |
309 | if (EQ (readcharfun, Qlambda)) | |
310 | return read_bytecode_char (0); | |
311 | ||
078e7b4a | 312 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
313 | { |
314 | c = getc (instream); | |
315 | #ifdef EINTR | |
316 | /* Interrupted reads have been observed while reading over the network */ | |
317 | while (c == EOF && ferror (instream) && errno == EINTR) | |
318 | { | |
319 | clearerr (instream); | |
320 | c = getc (instream); | |
321 | } | |
322 | #endif | |
323 | return c; | |
324 | } | |
078e7b4a | 325 | |
cfff016d | 326 | if (STRINGP (readcharfun)) |
078e7b4a | 327 | { |
bed23cb2 | 328 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 329 | c = -1; |
bed23cb2 RS |
330 | else if (STRING_MULTIBYTE (readcharfun)) |
331 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, | |
332 | read_from_string_index, | |
333 | read_from_string_index_byte); | |
334 | else | |
335 | c = XSTRING (readcharfun)->data[read_from_string_index++]; | |
6f7f43d5 | 336 | |
078e7b4a JB |
337 | return c; |
338 | } | |
339 | ||
340 | tem = call0 (readcharfun); | |
341 | ||
265a9e55 | 342 | if (NILP (tem)) |
078e7b4a JB |
343 | return -1; |
344 | return XINT (tem); | |
345 | } | |
346 | ||
347 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
348 | If the stream is a user function, call it with the char as argument. */ | |
349 | ||
350 | static void | |
351 | unreadchar (readcharfun, c) | |
352 | Lisp_Object readcharfun; | |
353 | int c; | |
354 | { | |
92fddec9 KH |
355 | if (c == -1) |
356 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
357 | since readchar didn't advance it when we read it. */ | |
358 | ; | |
cfff016d | 359 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 360 | { |
bed23cb2 RS |
361 | struct buffer *b = XBUFFER (readcharfun); |
362 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 363 | |
00a9a935 RS |
364 | if (readchar_backlog >= 0) |
365 | readchar_backlog++; | |
bed23cb2 | 366 | else |
00a9a935 RS |
367 | { |
368 | BUF_PT (b)--; | |
369 | if (! NILP (b->enable_multibyte_characters)) | |
370 | BUF_DEC_POS (b, bytepos); | |
371 | else | |
372 | bytepos--; | |
d7760ca9 | 373 | |
00a9a935 RS |
374 | BUF_PT_BYTE (b) = bytepos; |
375 | } | |
d7760ca9 | 376 | } |
cfff016d | 377 | else if (MARKERP (readcharfun)) |
d7760ca9 | 378 | { |
bed23cb2 RS |
379 | struct buffer *b = XMARKER (readcharfun)->buffer; |
380 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 381 | |
00a9a935 RS |
382 | if (readchar_backlog >= 0) |
383 | readchar_backlog++; | |
bed23cb2 | 384 | else |
00a9a935 RS |
385 | { |
386 | XMARKER (readcharfun)->charpos--; | |
387 | if (! NILP (b->enable_multibyte_characters)) | |
388 | BUF_DEC_POS (b, bytepos); | |
389 | else | |
390 | bytepos--; | |
d7760ca9 | 391 | |
00a9a935 RS |
392 | XMARKER (readcharfun)->bytepos = bytepos; |
393 | } | |
d7760ca9 | 394 | } |
cfff016d | 395 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
396 | { |
397 | read_from_string_index--; | |
398 | read_from_string_index_byte | |
399 | = string_char_to_byte (readcharfun, read_from_string_index); | |
400 | } | |
ad0153e4 RS |
401 | else if (EQ (readcharfun, Qlambda)) |
402 | read_bytecode_char (1); | |
078e7b4a JB |
403 | else if (EQ (readcharfun, Qget_file_char)) |
404 | ungetc (c, instream); | |
405 | else | |
406 | call1 (readcharfun, make_number (c)); | |
407 | } | |
408 | ||
409 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 410 | static int read_multibyte (); |
9e062b6c RS |
411 | static Lisp_Object substitute_object_recurse (); |
412 | static void substitute_object_in_subtree (), substitute_in_interval (); | |
413 | ||
078e7b4a | 414 | \f |
bed23cb2 | 415 | /* Get a character from the tty. */ |
078e7b4a | 416 | |
3d9b22be JB |
417 | extern Lisp_Object read_char (); |
418 | ||
f42be754 JB |
419 | /* Read input events until we get one that's acceptable for our purposes. |
420 | ||
421 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
422 | until we get a character we like, and then stuffed into | |
423 | unread_switch_frame. | |
424 | ||
425 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
426 | if the unmodified version of the symbol has a Qascii_character | |
427 | property, and use that character, if present. | |
428 | ||
429 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
430 | get isn't an ASCII character with modifiers. If it's zero but | |
431 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
432 | character. |
433 | ||
434 | If INPUT_METHOD is nonzero, we invoke the current input method | |
435 | if the character warrants that. */ | |
cc39bc38 | 436 | |
f42be754 | 437 | Lisp_Object |
bb49a192 RS |
438 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
439 | input_method) | |
440 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 JB |
441 | { |
442 | #ifdef standalone | |
443 | return make_number (getchar ()); | |
444 | #else | |
153a17b7 KH |
445 | register Lisp_Object val, delayed_switch_frame; |
446 | ||
447 | delayed_switch_frame = Qnil; | |
f42be754 JB |
448 | |
449 | /* Read until we get an acceptable event. */ | |
450 | retry: | |
bb49a192 RS |
451 | val = read_char (0, 0, 0, |
452 | (input_method ? Qnil : Qt), | |
453 | 0); | |
f42be754 | 454 | |
cfff016d | 455 | if (BUFFERP (val)) |
6c82d689 KH |
456 | goto retry; |
457 | ||
f42be754 | 458 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 459 | character. This is better than signaling an error just because |
f42be754 JB |
460 | the last characters were typed to a separate minibuffer frame, |
461 | for example. Eventually, some code which can deal with | |
462 | switch-frame events will read it and process it. */ | |
463 | if (no_switch_frame | |
464 | && EVENT_HAS_PARAMETERS (val) | |
465 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
466 | { | |
467 | delayed_switch_frame = val; | |
468 | goto retry; | |
469 | } | |
470 | ||
471 | if (ascii_required) | |
472 | { | |
473 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 474 | if (SYMBOLP (val)) |
f42be754 JB |
475 | { |
476 | Lisp_Object tem, tem1, tem2; | |
477 | tem = Fget (val, Qevent_symbol_element_mask); | |
478 | if (!NILP (tem)) | |
479 | { | |
480 | tem1 = Fget (Fcar (tem), Qascii_character); | |
481 | /* Merge this symbol's modifier bits | |
482 | with the ASCII equivalent of its basic code. */ | |
483 | if (!NILP (tem1)) | |
baf69866 | 484 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
485 | } |
486 | } | |
487 | ||
488 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 489 | if (!INTEGERP (val)) |
f42be754 JB |
490 | { |
491 | if (error_nonascii) | |
492 | { | |
1ec84625 | 493 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
494 | error ("Non-character input-event"); |
495 | } | |
496 | else | |
497 | goto retry; | |
498 | } | |
499 | } | |
500 | ||
501 | if (! NILP (delayed_switch_frame)) | |
502 | unread_switch_frame = delayed_switch_frame; | |
503 | ||
504 | return val; | |
505 | #endif | |
506 | } | |
507 | ||
bb49a192 | 508 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
078e7b4a | 509 | "Read a character from the command input (keyboard or macro).\n\ |
e51e47f7 JB |
510 | It is returned as a number.\n\ |
511 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
512 | click or function key event), `read-char' signals an error. As an\n\ |
513 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
514 | be read.\n\ | |
515 | If you want to read non-character events, or ignore them, call\n\ | |
bb49a192 RS |
516 | `read-event' or `read-char-exclusive' instead.\n\ |
517 | \n\ | |
518 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
519 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
520 | input method is turned on in the current buffer, that input method\n\ | |
521 | is used for reading a character.") | |
522 | (prompt, inherit_input_method) | |
523 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 524 | { |
bb49a192 RS |
525 | if (! NILP (prompt)) |
526 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 527 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
528 | } |
529 | ||
bb49a192 RS |
530 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
531 | "Read an event object from the input stream.\n\ | |
532 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
533 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
534 | input method is turned on in the current buffer, that input method\n\ | |
535 | is used for reading a character.") | |
536 | (prompt, inherit_input_method) | |
537 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 538 | { |
bb49a192 RS |
539 | if (! NILP (prompt)) |
540 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 541 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
542 | } |
543 | ||
bb49a192 | 544 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
078e7b4a | 545 | "Read a character from the command input (keyboard or macro).\n\ |
bb49a192 RS |
546 | It is returned as a number. Non-character events are ignored.\n\ |
547 | \n\ | |
548 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
549 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
550 | input method is turned on in the current buffer, that input method\n\ | |
551 | is used for reading a character.") | |
552 | (prompt, inherit_input_method) | |
553 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 554 | { |
bb49a192 RS |
555 | if (! NILP (prompt)) |
556 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 557 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 558 | } |
078e7b4a JB |
559 | |
560 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
561 | "Don't use this yourself.") | |
562 | () | |
563 | { | |
564 | register Lisp_Object val; | |
1805de4f | 565 | XSETINT (val, getc (instream)); |
078e7b4a JB |
566 | return val; |
567 | } | |
568 | \f | |
569 | static void readevalloop (); | |
570 | static Lisp_Object load_unwind (); | |
d2c6be7f | 571 | static Lisp_Object load_descriptor_unwind (); |
078e7b4a | 572 | |
f0a50954 | 573 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
574 | "Execute a file of Lisp code named FILE.\n\ |
575 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
576 | then try FILE unmodified.\n\ | |
577 | This function searches the directories in `load-path'.\n\ | |
578 | If optional second arg NOERROR is non-nil,\n\ | |
579 | report no error if FILE doesn't exist.\n\ | |
580 | Print messages at start and end of loading unless\n\ | |
581 | optional third arg NOMESSAGE is non-nil.\n\ | |
582 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
583 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 584 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 585 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 586 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 587 | Return t if file exists.") |
f0a50954 RS |
588 | (file, noerror, nomessage, nosuffix, must_suffix) |
589 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
590 | { |
591 | register FILE *stream; | |
592 | register int fd = -1; | |
593 | register Lisp_Object lispstream; | |
078e7b4a JB |
594 | int count = specpdl_ptr - specpdl; |
595 | Lisp_Object temp; | |
596 | struct gcpro gcpro1; | |
597 | Lisp_Object found; | |
04fc68e7 RS |
598 | /* 1 means we printed the ".el is newer" message. */ |
599 | int newer = 0; | |
600 | /* 1 means we are loading a compiled file. */ | |
601 | int compiled = 0; | |
c2225d00 | 602 | Lisp_Object handler; |
229ba775 | 603 | char *fmode = "r"; |
317073d5 | 604 | #ifdef DOS_NT |
229ba775 | 605 | fmode = "rt"; |
317073d5 | 606 | #endif /* DOS_NT */ |
078e7b4a | 607 | |
0745dce9 | 608 | CHECK_STRING (file, 0); |
078e7b4a | 609 | |
c2225d00 | 610 | /* If file name is magic, call the handler. */ |
0745dce9 | 611 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 612 | if (!NILP (handler)) |
0745dce9 | 613 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 614 | |
07a0bda3 RS |
615 | /* Do this after the handler to avoid |
616 | the need to gcpro noerror, nomessage and nosuffix. | |
617 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 618 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 619 | |
078e7b4a JB |
620 | /* Avoid weird lossage with null string as arg, |
621 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 622 | if (XSTRING (file)->size > 0) |
078e7b4a | 623 | { |
211f7dcd RS |
624 | int size = XSTRING (file)->size; |
625 | ||
0745dce9 | 626 | GCPRO1 (file); |
211f7dcd RS |
627 | |
628 | if (! NILP (must_suffix)) | |
629 | { | |
630 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
631 | if (size > 3 | |
632 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
633 | must_suffix = Qnil; | |
634 | else if (size > 4 | |
635 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
636 | must_suffix = Qnil; | |
637 | /* Don't insist on adding a suffix | |
638 | if the argument includes a directory name. */ | |
639 | else if (! NILP (Ffile_name_directory (file))) | |
640 | must_suffix = Qnil; | |
641 | } | |
642 | ||
f0a50954 RS |
643 | fd = openp (Vload_path, file, |
644 | (!NILP (nosuffix) ? "" | |
645 | : ! NILP (must_suffix) ? ".elc:.el" | |
646 | : ".elc:.el:"), | |
078e7b4a | 647 | &found, 0); |
5a6e5452 | 648 | UNGCPRO; |
078e7b4a JB |
649 | } |
650 | ||
651 | if (fd < 0) | |
652 | { | |
265a9e55 | 653 | if (NILP (noerror)) |
078e7b4a JB |
654 | while (1) |
655 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 656 | Fcons (file, Qnil))); |
078e7b4a JB |
657 | else |
658 | return Qnil; | |
659 | } | |
660 | ||
4116ab9f KH |
661 | if (EQ (Qt, Vuser_init_file)) |
662 | Vuser_init_file = found; | |
663 | ||
5e24a1f7 | 664 | /* If FD is 0, that means openp found a magic file. */ |
74549846 RS |
665 | if (fd == 0) |
666 | { | |
5e24a1f7 KH |
667 | if (NILP (Fequal (found, file))) |
668 | /* If FOUND is a different file name from FILE, | |
669 | find its handler even if we have already inhibited | |
670 | the `load' operation on FILE. */ | |
671 | handler = Ffind_file_name_handler (found, Qt); | |
672 | else | |
673 | handler = Ffind_file_name_handler (found, Qload); | |
674 | if (! NILP (handler)) | |
675 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
676 | } |
677 | ||
5e24a1f7 KH |
678 | /* Load .elc files directly, but not when they are |
679 | remote and have no handler! */ | |
078e7b4a | 680 | if (!bcmp (&(XSTRING (found)->data[XSTRING (found)->size - 4]), |
5e24a1f7 KH |
681 | ".elc", 4) |
682 | && fd != 0) | |
078e7b4a JB |
683 | { |
684 | struct stat s1, s2; | |
685 | int result; | |
686 | ||
04fc68e7 RS |
687 | compiled = 1; |
688 | ||
317073d5 | 689 | #ifdef DOS_NT |
229ba775 | 690 | fmode = "rb"; |
317073d5 | 691 | #endif /* DOS_NT */ |
4ff37b08 | 692 | stat ((char *)XSTRING (found)->data, &s1); |
078e7b4a | 693 | XSTRING (found)->data[XSTRING (found)->size - 1] = 0; |
4ff37b08 | 694 | result = stat ((char *)XSTRING (found)->data, &s2); |
078e7b4a | 695 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
51ac6f83 | 696 | { |
04fc68e7 RS |
697 | /* Make the progress messages mention that source is newer. */ |
698 | newer = 1; | |
699 | ||
700 | /* If we won't print another message, mention this anyway. */ | |
701 | if (! NILP (nomessage)) | |
e28552a4 RS |
702 | message_with_string ("Source file `%s' newer than byte-compiled file", |
703 | found, 1); | |
51ac6f83 | 704 | } |
078e7b4a JB |
705 | XSTRING (found)->data[XSTRING (found)->size - 1] = 'c'; |
706 | } | |
fe0e03f3 KH |
707 | else |
708 | { | |
709 | /* We are loading a source file (*.el). */ | |
710 | if (!NILP (Vload_source_file_function)) | |
711 | { | |
5e24a1f7 KH |
712 | if (fd != 0) |
713 | close (fd); | |
7075e5a5 | 714 | return call4 (Vload_source_file_function, found, file, |
fe0e03f3 KH |
715 | NILP (noerror) ? Qnil : Qt, |
716 | NILP (nomessage) ? Qnil : Qt); | |
717 | } | |
718 | } | |
078e7b4a | 719 | |
229ba775 | 720 | #ifdef WINDOWSNT |
23a71bd6 | 721 | close (fd); |
229ba775 EZ |
722 | stream = fopen ((char *) XSTRING (found)->data, fmode); |
723 | #else /* not WINDOWSNT */ | |
724 | stream = fdopen (fd, fmode); | |
725 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
726 | if (stream == 0) |
727 | { | |
728 | close (fd); | |
0745dce9 | 729 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
730 | } |
731 | ||
4b104c41 RS |
732 | if (! NILP (Vpurify_flag)) |
733 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
734 | ||
04fc68e7 RS |
735 | if (NILP (nomessage)) |
736 | { | |
db5cae4b | 737 | if (!compiled) |
e28552a4 | 738 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 739 | else if (newer) |
e28552a4 RS |
740 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
741 | file, 1); | |
db5cae4b | 742 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 743 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 744 | } |
078e7b4a | 745 | |
0745dce9 | 746 | GCPRO1 (file); |
838abf56 KH |
747 | lispstream = Fcons (Qnil, Qnil); |
748 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
749 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 750 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 751 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 752 | specbind (Qload_file_name, found); |
74549846 | 753 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
754 | load_descriptor_list |
755 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 756 | load_in_progress++; |
976350af | 757 | readevalloop (Qget_file_char, stream, file, Feval, 0, Qnil, Qnil); |
078e7b4a JB |
758 | unbind_to (count, Qnil); |
759 | ||
760 | /* Run any load-hooks for this file. */ | |
0745dce9 | 761 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 762 | if (!NILP (temp)) |
078e7b4a JB |
763 | Fprogn (Fcdr (temp)); |
764 | UNGCPRO; | |
765 | ||
b2a30870 RS |
766 | if (saved_doc_string) |
767 | free (saved_doc_string); | |
768 | saved_doc_string = 0; | |
769 | saved_doc_string_size = 0; | |
770 | ||
c15cfd1f RS |
771 | if (prev_saved_doc_string) |
772 | free (prev_saved_doc_string); | |
773 | prev_saved_doc_string = 0; | |
774 | prev_saved_doc_string_size = 0; | |
775 | ||
265a9e55 | 776 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 777 | { |
db5cae4b | 778 | if (!compiled) |
e28552a4 | 779 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 780 | else if (newer) |
e28552a4 RS |
781 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
782 | file, 1); | |
db5cae4b | 783 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 784 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 785 | } |
078e7b4a JB |
786 | return Qt; |
787 | } | |
788 | ||
789 | static Lisp_Object | |
790 | load_unwind (stream) /* used as unwind-protect function in load */ | |
791 | Lisp_Object stream; | |
792 | { | |
c8bdaa8c RS |
793 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 |
794 | | XFASTINT (XCONS (stream)->cdr))); | |
078e7b4a JB |
795 | if (--load_in_progress < 0) load_in_progress = 0; |
796 | return Qnil; | |
797 | } | |
798 | ||
d2c6be7f RS |
799 | static Lisp_Object |
800 | load_descriptor_unwind (oldlist) | |
801 | Lisp_Object oldlist; | |
802 | { | |
803 | load_descriptor_list = oldlist; | |
838abf56 | 804 | return Qnil; |
d2c6be7f RS |
805 | } |
806 | ||
807 | /* Close all descriptors in use for Floads. | |
808 | This is used when starting a subprocess. */ | |
809 | ||
810 | void | |
811 | close_load_descs () | |
812 | { | |
f3849f25 | 813 | #ifndef WINDOWSNT |
d2c6be7f RS |
814 | Lisp_Object tail; |
815 | for (tail = load_descriptor_list; !NILP (tail); tail = XCONS (tail)->cdr) | |
816 | close (XFASTINT (XCONS (tail)->car)); | |
f3849f25 | 817 | #endif |
d2c6be7f | 818 | } |
078e7b4a JB |
819 | \f |
820 | static int | |
821 | complete_filename_p (pathname) | |
822 | Lisp_Object pathname; | |
823 | { | |
824 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
825 | return (IS_DIRECTORY_SEP (s[0]) |
826 | || (XSTRING (pathname)->size > 2 | |
827 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
828 | #ifdef ALTOS |
829 | || *s == '@' | |
830 | #endif | |
831 | #ifdef VMS | |
832 | || index (s, ':') | |
833 | #endif /* VMS */ | |
834 | ); | |
835 | } | |
836 | ||
837 | /* Search for a file whose name is STR, looking in directories | |
838 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
839 | SUFFIX is a string containing possible suffixes separated by colons. | |
840 | On success, returns a file descriptor. On failure, returns -1. | |
841 | ||
842 | EXEC_ONLY nonzero means don't open the files, | |
843 | just look for one that is executable. In this case, | |
844 | returns 1 on success. | |
845 | ||
846 | If STOREPTR is nonzero, it points to a slot where the name of | |
847 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
848 | nil is stored there on failure. |
849 | ||
850 | If the file we find is remote, return 0 | |
851 | but store the found remote file name in *STOREPTR. | |
852 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
853 | |
854 | int | |
855 | openp (path, str, suffix, storeptr, exec_only) | |
856 | Lisp_Object path, str; | |
857 | char *suffix; | |
858 | Lisp_Object *storeptr; | |
859 | int exec_only; | |
860 | { | |
861 | register int fd; | |
862 | int fn_size = 100; | |
863 | char buf[100]; | |
864 | register char *fn = buf; | |
865 | int absolute = 0; | |
866 | int want_size; | |
74549846 | 867 | Lisp_Object filename; |
078e7b4a | 868 | struct stat st; |
5a6e5452 | 869 | struct gcpro gcpro1; |
078e7b4a | 870 | |
5a6e5452 | 871 | GCPRO1 (str); |
078e7b4a JB |
872 | if (storeptr) |
873 | *storeptr = Qnil; | |
874 | ||
875 | if (complete_filename_p (str)) | |
876 | absolute = 1; | |
877 | ||
265a9e55 | 878 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
879 | { |
880 | char *nsuffix; | |
881 | ||
882 | filename = Fexpand_file_name (str, Fcar (path)); | |
883 | if (!complete_filename_p (filename)) | |
884 | /* If there are non-absolute elts in PATH (eg ".") */ | |
885 | /* Of course, this could conceivably lose if luser sets | |
886 | default-directory to be something non-absolute... */ | |
887 | { | |
888 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
889 | if (!complete_filename_p (filename)) | |
890 | /* Give up on this path element! */ | |
891 | continue; | |
892 | } | |
893 | ||
894 | /* Calculate maximum size of any filename made from | |
895 | this path element/specified file name and any possible suffix. */ | |
896 | want_size = strlen (suffix) + XSTRING (filename)->size + 1; | |
897 | if (fn_size < want_size) | |
898 | fn = (char *) alloca (fn_size = 100 + want_size); | |
899 | ||
900 | nsuffix = suffix; | |
901 | ||
902 | /* Loop over suffixes. */ | |
903 | while (1) | |
904 | { | |
905 | char *esuffix = (char *) index (nsuffix, ':'); | |
906 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 907 | Lisp_Object handler; |
078e7b4a | 908 | |
c49afcd7 RS |
909 | /* Concatenate path element/specified name with the suffix. |
910 | If the directory starts with /:, remove that. */ | |
911 | if (XSTRING (filename)->size > 2 | |
912 | && XSTRING (filename)->data[0] == '/' | |
913 | && XSTRING (filename)->data[1] == ':') | |
914 | { | |
915 | strncpy (fn, XSTRING (filename)->data + 2, | |
916 | XSTRING (filename)->size - 2); | |
917 | fn[XSTRING (filename)->size - 2] = 0; | |
918 | } | |
919 | else | |
920 | { | |
921 | strncpy (fn, XSTRING (filename)->data, XSTRING (filename)->size); | |
922 | fn[XSTRING (filename)->size] = 0; | |
923 | } | |
924 | ||
078e7b4a JB |
925 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
926 | strncat (fn, nsuffix, lsuffix); | |
927 | ||
74549846 RS |
928 | /* Check that the file exists and is not a directory. */ |
929 | if (absolute) | |
930 | handler = Qnil; | |
931 | else | |
932 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
933 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 934 | { |
74549846 RS |
935 | Lisp_Object string; |
936 | int exists; | |
078e7b4a | 937 | |
74549846 RS |
938 | string = build_string (fn); |
939 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
940 | : Ffile_readable_p (string)); | |
941 | if (exists | |
942 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
943 | exists = 0; | |
944 | ||
945 | if (exists) | |
078e7b4a JB |
946 | { |
947 | /* We succeeded; return this descriptor and filename. */ | |
948 | if (storeptr) | |
949 | *storeptr = build_string (fn); | |
5ef2a3c0 | 950 | UNGCPRO; |
74549846 RS |
951 | return 0; |
952 | } | |
953 | } | |
954 | else | |
955 | { | |
956 | int exists = (stat (fn, &st) >= 0 | |
957 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
958 | if (exists) | |
959 | { | |
960 | /* Check that we can access or open it. */ | |
961 | if (exec_only) | |
962 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
963 | else | |
964 | fd = open (fn, O_RDONLY, 0); | |
965 | ||
966 | if (fd >= 0) | |
967 | { | |
968 | /* We succeeded; return this descriptor and filename. */ | |
969 | if (storeptr) | |
970 | *storeptr = build_string (fn); | |
971 | UNGCPRO; | |
972 | return fd; | |
973 | } | |
078e7b4a JB |
974 | } |
975 | } | |
976 | ||
977 | /* Advance to next suffix. */ | |
978 | if (esuffix == 0) | |
979 | break; | |
980 | nsuffix += lsuffix + 1; | |
981 | } | |
5a6e5452 | 982 | if (absolute) |
5ef2a3c0 | 983 | break; |
078e7b4a JB |
984 | } |
985 | ||
5ef2a3c0 KH |
986 | UNGCPRO; |
987 | return -1; | |
078e7b4a JB |
988 | } |
989 | ||
990 | \f | |
ae321d28 RS |
991 | /* Merge the list we've accumulated of globals from the current input source |
992 | into the load_history variable. The details depend on whether | |
993 | the source has an associated file name or not. */ | |
994 | ||
995 | static void | |
996 | build_load_history (stream, source) | |
997 | FILE *stream; | |
998 | Lisp_Object source; | |
999 | { | |
1000 | register Lisp_Object tail, prev, newelt; | |
1001 | register Lisp_Object tem, tem2; | |
1002 | register int foundit, loading; | |
1003 | ||
1004 | loading = stream || !NARROWED; | |
1005 | ||
1006 | tail = Vload_history; | |
1007 | prev = Qnil; | |
1008 | foundit = 0; | |
1009 | while (!NILP (tail)) | |
1010 | { | |
1011 | tem = Fcar (tail); | |
1012 | ||
1013 | /* Find the feature's previous assoc list... */ | |
1014 | if (!NILP (Fequal (source, Fcar (tem)))) | |
1015 | { | |
1016 | foundit = 1; | |
1017 | ||
1018 | /* If we're loading, remove it. */ | |
1019 | if (loading) | |
1020 | { | |
1021 | if (NILP (prev)) | |
1022 | Vload_history = Fcdr (tail); | |
1023 | else | |
1024 | Fsetcdr (prev, Fcdr (tail)); | |
1025 | } | |
1026 | ||
1027 | /* Otherwise, cons on new symbols that are not already members. */ | |
1028 | else | |
1029 | { | |
1030 | tem2 = Vcurrent_load_list; | |
1031 | ||
1032 | while (CONSP (tem2)) | |
1033 | { | |
1034 | newelt = Fcar (tem2); | |
1035 | ||
1036 | if (NILP (Fmemq (newelt, tem))) | |
1037 | Fsetcar (tail, Fcons (Fcar (tem), | |
1038 | Fcons (newelt, Fcdr (tem)))); | |
1039 | ||
1040 | tem2 = Fcdr (tem2); | |
1041 | QUIT; | |
1042 | } | |
1043 | } | |
1044 | } | |
1045 | else | |
1046 | prev = tail; | |
1047 | tail = Fcdr (tail); | |
1048 | QUIT; | |
1049 | } | |
1050 | ||
8a1f1537 RS |
1051 | /* If we're loading, cons the new assoc onto the front of load-history, |
1052 | the most-recently-loaded position. Also do this if we didn't find | |
1053 | an existing member for the current source. */ | |
1054 | if (loading || !foundit) | |
1055 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
1056 | Vload_history); | |
ae321d28 RS |
1057 | } |
1058 | ||
078e7b4a JB |
1059 | Lisp_Object |
1060 | unreadpure () /* Used as unwind-protect function in readevalloop */ | |
1061 | { | |
1062 | read_pure = 0; | |
1063 | return Qnil; | |
1064 | } | |
1065 | ||
94e554db RS |
1066 | static Lisp_Object |
1067 | readevalloop_1 (old) | |
1068 | Lisp_Object old; | |
1069 | { | |
1070 | load_convert_to_unibyte = ! NILP (old); | |
1071 | return Qnil; | |
1072 | } | |
1073 | ||
1074 | /* UNIBYTE specifies how to set load_convert_to_unibyte | |
976350af RS |
1075 | for this invocation. |
1076 | READFUN, if non-nil, is used instead of `read'. */ | |
94e554db | 1077 | |
078e7b4a | 1078 | static void |
976350af | 1079 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag, unibyte, readfun) |
078e7b4a | 1080 | Lisp_Object readcharfun; |
ae321d28 RS |
1081 | FILE *stream; |
1082 | Lisp_Object sourcename; | |
078e7b4a JB |
1083 | Lisp_Object (*evalfun) (); |
1084 | int printflag; | |
976350af | 1085 | Lisp_Object unibyte, readfun; |
078e7b4a JB |
1086 | { |
1087 | register int c; | |
1088 | register Lisp_Object val; | |
1089 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 1090 | struct gcpro gcpro1; |
49cf7ff4 RS |
1091 | struct buffer *b = 0; |
1092 | ||
1093 | if (BUFFERP (readcharfun)) | |
1094 | b = XBUFFER (readcharfun); | |
1095 | else if (MARKERP (readcharfun)) | |
1096 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
1097 | |
1098 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 1099 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1100 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1101 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1102 | |
00a9a935 | 1103 | readchar_backlog = -1; |
6f7f43d5 | 1104 | |
8a1f1537 | 1105 | GCPRO1 (sourcename); |
ae321d28 | 1106 | |
ae321d28 RS |
1107 | LOADHIST_ATTACH (sourcename); |
1108 | ||
078e7b4a JB |
1109 | while (1) |
1110 | { | |
49cf7ff4 RS |
1111 | if (b != 0 && NILP (b->name)) |
1112 | error ("Reading from killed buffer"); | |
1113 | ||
078e7b4a JB |
1114 | instream = stream; |
1115 | c = READCHAR; | |
1116 | if (c == ';') | |
1117 | { | |
1118 | while ((c = READCHAR) != '\n' && c != -1); | |
1119 | continue; | |
1120 | } | |
1121 | if (c < 0) break; | |
6069d957 RS |
1122 | |
1123 | /* Ignore whitespace here, so we can detect eof. */ | |
1124 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
1125 | continue; | |
078e7b4a | 1126 | |
265a9e55 | 1127 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1128 | { |
0e326373 | 1129 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
1130 | record_unwind_protect (unreadpure, Qnil); |
1131 | val = read_list (-1, readcharfun); | |
0e326373 | 1132 | unbind_to (count1, Qnil); |
078e7b4a JB |
1133 | } |
1134 | else | |
1135 | { | |
1136 | UNREAD (c); | |
4ad679f9 | 1137 | read_objects = Qnil; |
976350af RS |
1138 | if (! NILP (readfun)) |
1139 | val = call1 (readfun, readcharfun); | |
1140 | else if (! NILP (Vload_read_function)) | |
84a15045 | 1141 | val = call1 (Vload_read_function, readcharfun); |
976350af RS |
1142 | else |
1143 | val = read0 (readcharfun); | |
078e7b4a JB |
1144 | } |
1145 | ||
1146 | val = (*evalfun) (val); | |
1147 | if (printflag) | |
1148 | { | |
1149 | Vvalues = Fcons (val, Vvalues); | |
1150 | if (EQ (Vstandard_output, Qt)) | |
1151 | Fprin1 (val, Qnil); | |
1152 | else | |
1153 | Fprint (val, Qnil); | |
1154 | } | |
1155 | } | |
1156 | ||
ae321d28 | 1157 | build_load_history (stream, sourcename); |
ae321d28 RS |
1158 | UNGCPRO; |
1159 | ||
078e7b4a JB |
1160 | unbind_to (count, Qnil); |
1161 | } | |
1162 | ||
1163 | #ifndef standalone | |
1164 | ||
1076254d | 1165 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
94b304d7 RS |
1166 | "Execute the current buffer as Lisp code.\n\ |
1167 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
1168 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
1169 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
1170 | nil means discard it; anything else is stream for print.\n\ |
1171 | \n\ | |
13febd85 RS |
1172 | If the optional third argument FILENAME is non-nil,\n\ |
1173 | it specifies the file name to use for `load-history'.\n\ | |
1076254d RS |
1174 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'\n\ |
1175 | for this invocation.\n\ | |
1176 | \n\ | |
1177 | The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that\n\ | |
1178 | `print' and related functions should work normally even if PRINTFLAG is nil.\n\ | |
13febd85 | 1179 | \n\ |
d331bcad | 1180 | This function preserves the position of point.") |
1076254d RS |
1181 | (buffer, printflag, filename, unibyte, do_allow_print) |
1182 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; | |
228d4b1c JA |
1183 | { |
1184 | int count = specpdl_ptr - specpdl; | |
1185 | Lisp_Object tem, buf; | |
1186 | ||
9391b698 | 1187 | if (NILP (buffer)) |
228d4b1c JA |
1188 | buf = Fcurrent_buffer (); |
1189 | else | |
9391b698 | 1190 | buf = Fget_buffer (buffer); |
dfdb645c | 1191 | if (NILP (buf)) |
13febd85 | 1192 | error ("No such buffer"); |
228d4b1c | 1193 | |
1076254d | 1194 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1195 | tem = Qsymbolp; |
1196 | else | |
1197 | tem = printflag; | |
13febd85 RS |
1198 | |
1199 | if (NILP (filename)) | |
1200 | filename = XBUFFER (buf)->filename; | |
1201 | ||
228d4b1c JA |
1202 | specbind (Qstandard_output, tem); |
1203 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1204 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
976350af | 1205 | readevalloop (buf, 0, filename, Feval, !NILP (printflag), unibyte, Qnil); |
cb09ab7a | 1206 | unbind_to (count, Qnil); |
228d4b1c JA |
1207 | |
1208 | return Qnil; | |
1209 | } | |
1210 | ||
1211 | #if 0 | |
c23edb78 | 1212 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1213 | "Execute the current buffer as Lisp code.\n\ |
1214 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1215 | nil means discard it; anything else is stream for print.\n\ | |
1216 | \n\ | |
1217 | If there is no error, point does not move. If there is an error,\n\ | |
1218 | point remains at the end of the last character read from the buffer.") | |
1219 | (printflag) | |
1220 | Lisp_Object printflag; | |
1221 | { | |
1222 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1223 | Lisp_Object tem, cbuf; |
1224 | ||
1225 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1226 | |
265a9e55 | 1227 | if (NILP (printflag)) |
078e7b4a JB |
1228 | tem = Qsymbolp; |
1229 | else | |
1230 | tem = printflag; | |
1231 | specbind (Qstandard_output, tem); | |
1232 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1233 | SET_PT (BEGV); | |
94e554db | 1234 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1235 | !NILP (printflag), Qnil, Qnil); |
078e7b4a JB |
1236 | return unbind_to (count, Qnil); |
1237 | } | |
228d4b1c | 1238 | #endif |
078e7b4a | 1239 | |
976350af | 1240 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
078e7b4a JB |
1241 | "Execute the region as Lisp code.\n\ |
1242 | When called from programs, expects two arguments,\n\ | |
1243 | giving starting and ending indices in the current buffer\n\ | |
1244 | of the text to be executed.\n\ | |
1245 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1246 | nil means discard it; anything else is stream for printing it.\n\ | |
976350af RS |
1247 | Also the fourth argument READ-FUNCTION, if non-nil, is used\n\ |
1248 | instead of `read' to read each expression. It gets one argument\n\ | |
1249 | which is the input stream for reading characters.\n\ | |
078e7b4a | 1250 | \n\ |
83f0c0c7 | 1251 | This function does not move point.") |
976350af RS |
1252 | (start, end, printflag, read_function) |
1253 | Lisp_Object start, end, printflag, read_function; | |
078e7b4a JB |
1254 | { |
1255 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1256 | Lisp_Object tem, cbuf; |
1257 | ||
1258 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1259 | |
265a9e55 | 1260 | if (NILP (printflag)) |
078e7b4a JB |
1261 | tem = Qsymbolp; |
1262 | else | |
1263 | tem = printflag; | |
1264 | specbind (Qstandard_output, tem); | |
1265 | ||
265a9e55 | 1266 | if (NILP (printflag)) |
078e7b4a JB |
1267 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1268 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1269 | ||
9391b698 EN |
1270 | /* This both uses start and checks its type. */ |
1271 | Fgoto_char (start); | |
1272 | Fnarrow_to_region (make_number (BEGV), end); | |
94e554db | 1273 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1274 | !NILP (printflag), Qnil, read_function); |
078e7b4a JB |
1275 | |
1276 | return unbind_to (count, Qnil); | |
1277 | } | |
1278 | ||
1279 | #endif /* standalone */ | |
1280 | \f | |
1281 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1282 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1283 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1284 | STREAM or the value of `standard-input' may be:\n\ | |
1285 | a buffer (read from point and advance it)\n\ | |
1286 | a marker (read from where it points and advance it)\n\ | |
1287 | a function (call it with no arguments for each character,\n\ | |
1288 | call it with a char as argument to push a char back)\n\ | |
1289 | a string (takes text from string, starting at the beginning)\n\ | |
1290 | t (read text line using minibuffer and use it).") | |
5be02dff KH |
1291 | (stream) |
1292 | Lisp_Object stream; | |
078e7b4a JB |
1293 | { |
1294 | extern Lisp_Object Fread_minibuffer (); | |
1295 | ||
5be02dff KH |
1296 | if (NILP (stream)) |
1297 | stream = Vstandard_input; | |
1298 | if (EQ (stream, Qt)) | |
1299 | stream = Qread_char; | |
078e7b4a | 1300 | |
00a9a935 | 1301 | readchar_backlog = -1; |
17634846 | 1302 | new_backquote_flag = 0; |
4ad679f9 | 1303 | read_objects = Qnil; |
17634846 | 1304 | |
078e7b4a | 1305 | #ifndef standalone |
5be02dff | 1306 | if (EQ (stream, Qread_char)) |
078e7b4a JB |
1307 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
1308 | #endif | |
1309 | ||
5be02dff KH |
1310 | if (STRINGP (stream)) |
1311 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1312 | |
5be02dff | 1313 | return read0 (stream); |
078e7b4a JB |
1314 | } |
1315 | ||
1316 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1317 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1318 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1319 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1320 | they default to 0 and (length STRING) respectively.") | |
1321 | (string, start, end) | |
1322 | Lisp_Object string, start, end; | |
1323 | { | |
1324 | int startval, endval; | |
1325 | Lisp_Object tem; | |
1326 | ||
1327 | CHECK_STRING (string,0); | |
1328 | ||
265a9e55 | 1329 | if (NILP (end)) |
bed23cb2 | 1330 | endval = XSTRING (string)->size; |
078e7b4a | 1331 | else |
e28552a4 RS |
1332 | { |
1333 | CHECK_NUMBER (end, 2); | |
8028e0ed | 1334 | endval = XINT (end); |
bed23cb2 | 1335 | if (endval < 0 || endval > XSTRING (string)->size) |
078e7b4a JB |
1336 | args_out_of_range (string, end); |
1337 | } | |
1338 | ||
265a9e55 | 1339 | if (NILP (start)) |
078e7b4a JB |
1340 | startval = 0; |
1341 | else | |
e28552a4 RS |
1342 | { |
1343 | CHECK_NUMBER (start, 1); | |
8028e0ed | 1344 | startval = XINT (start); |
078e7b4a JB |
1345 | if (startval < 0 || startval > endval) |
1346 | args_out_of_range (string, start); | |
1347 | } | |
1348 | ||
1349 | read_from_string_index = startval; | |
bed23cb2 | 1350 | read_from_string_index_byte = string_char_to_byte (string, startval); |
078e7b4a JB |
1351 | read_from_string_limit = endval; |
1352 | ||
17634846 | 1353 | new_backquote_flag = 0; |
4ad679f9 | 1354 | read_objects = Qnil; |
17634846 | 1355 | |
078e7b4a | 1356 | tem = read0 (string); |
bed23cb2 | 1357 | return Fcons (tem, make_number (read_from_string_index)); |
078e7b4a JB |
1358 | } |
1359 | \f | |
6428369f KH |
1360 | /* Use this for recursive reads, in contexts where internal tokens |
1361 | are not allowed. */ | |
e28552a4 | 1362 | |
078e7b4a JB |
1363 | static Lisp_Object |
1364 | read0 (readcharfun) | |
1365 | Lisp_Object readcharfun; | |
1366 | { | |
1367 | register Lisp_Object val; | |
e28552a4 | 1368 | int c; |
078e7b4a | 1369 | |
17634846 | 1370 | val = read1 (readcharfun, &c, 0); |
6428369f | 1371 | if (c) |
93d75e4c RS |
1372 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1373 | make_number (c)), | |
e28552a4 | 1374 | Qnil)); |
078e7b4a JB |
1375 | |
1376 | return val; | |
1377 | } | |
1378 | \f | |
1379 | static int read_buffer_size; | |
1380 | static char *read_buffer; | |
1381 | ||
fe0e03f3 KH |
1382 | /* Read multibyte form and return it as a character. C is a first |
1383 | byte of multibyte form, and rest of them are read from | |
1384 | READCHARFUN. */ | |
6f7f43d5 | 1385 | |
fe0e03f3 KH |
1386 | static int |
1387 | read_multibyte (c, readcharfun) | |
1388 | register int c; | |
1389 | Lisp_Object readcharfun; | |
1390 | { | |
1391 | /* We need the actual character code of this multibyte | |
1392 | characters. */ | |
1393 | unsigned char str[MAX_LENGTH_OF_MULTI_BYTE_FORM]; | |
1394 | int len = 0; | |
1395 | ||
1396 | str[len++] = c; | |
1397 | while ((c = READCHAR) >= 0xA0 | |
1398 | && len < MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1399 | str[len++] = c; | |
1400 | UNREAD (c); | |
1401 | return STRING_CHAR (str, len); | |
1402 | } | |
1403 | ||
6f7f43d5 RS |
1404 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1405 | ||
078e7b4a | 1406 | static int |
e7fc914b | 1407 | read_escape (readcharfun, stringp) |
078e7b4a | 1408 | Lisp_Object readcharfun; |
e7fc914b | 1409 | int stringp; |
078e7b4a JB |
1410 | { |
1411 | register int c = READCHAR; | |
1412 | switch (c) | |
1413 | { | |
f3849f25 RS |
1414 | case -1: |
1415 | error ("End of file"); | |
1416 | ||
078e7b4a | 1417 | case 'a': |
265a9e55 | 1418 | return '\007'; |
078e7b4a JB |
1419 | case 'b': |
1420 | return '\b'; | |
f405a585 RS |
1421 | case 'd': |
1422 | return 0177; | |
078e7b4a JB |
1423 | case 'e': |
1424 | return 033; | |
1425 | case 'f': | |
1426 | return '\f'; | |
1427 | case 'n': | |
1428 | return '\n'; | |
1429 | case 'r': | |
1430 | return '\r'; | |
1431 | case 't': | |
1432 | return '\t'; | |
1433 | case 'v': | |
1434 | return '\v'; | |
1435 | case '\n': | |
1436 | return -1; | |
e28552a4 | 1437 | case ' ': |
e7fc914b KH |
1438 | if (stringp) |
1439 | return -1; | |
1440 | return ' '; | |
078e7b4a JB |
1441 | |
1442 | case 'M': | |
1443 | c = READCHAR; | |
1444 | if (c != '-') | |
1445 | error ("Invalid escape character syntax"); | |
1446 | c = READCHAR; | |
1447 | if (c == '\\') | |
e7fc914b | 1448 | c = read_escape (readcharfun, 0); |
7bd279cd | 1449 | return c | meta_modifier; |
f405a585 RS |
1450 | |
1451 | case 'S': | |
1452 | c = READCHAR; | |
1453 | if (c != '-') | |
1454 | error ("Invalid escape character syntax"); | |
1455 | c = READCHAR; | |
1456 | if (c == '\\') | |
e7fc914b | 1457 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1458 | return c | shift_modifier; |
1459 | ||
1460 | case 'H': | |
1461 | c = READCHAR; | |
1462 | if (c != '-') | |
1463 | error ("Invalid escape character syntax"); | |
1464 | c = READCHAR; | |
1465 | if (c == '\\') | |
e7fc914b | 1466 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1467 | return c | hyper_modifier; |
1468 | ||
1469 | case 'A': | |
1470 | c = READCHAR; | |
1471 | if (c != '-') | |
1472 | error ("Invalid escape character syntax"); | |
1473 | c = READCHAR; | |
1474 | if (c == '\\') | |
e7fc914b | 1475 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1476 | return c | alt_modifier; |
1477 | ||
1478 | case 's': | |
1479 | c = READCHAR; | |
1480 | if (c != '-') | |
1481 | error ("Invalid escape character syntax"); | |
1482 | c = READCHAR; | |
1483 | if (c == '\\') | |
e7fc914b | 1484 | c = read_escape (readcharfun, 0); |
7bd279cd | 1485 | return c | super_modifier; |
078e7b4a JB |
1486 | |
1487 | case 'C': | |
1488 | c = READCHAR; | |
1489 | if (c != '-') | |
1490 | error ("Invalid escape character syntax"); | |
1491 | case '^': | |
1492 | c = READCHAR; | |
1493 | if (c == '\\') | |
e7fc914b | 1494 | c = read_escape (readcharfun, 0); |
164d590d KH |
1495 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1496 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1497 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1498 | return c | ctrl_modifier; | |
f405a585 RS |
1499 | /* ASCII control chars are made from letters (both cases), |
1500 | as well as the non-letters within 0100...0137. */ | |
1501 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1502 | return (c & (037 | ~0177)); | |
1503 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1504 | return (c & (037 | ~0177)); | |
078e7b4a | 1505 | else |
7bd279cd | 1506 | return c | ctrl_modifier; |
078e7b4a JB |
1507 | |
1508 | case '0': | |
1509 | case '1': | |
1510 | case '2': | |
1511 | case '3': | |
1512 | case '4': | |
1513 | case '5': | |
1514 | case '6': | |
1515 | case '7': | |
1516 | /* An octal escape, as in ANSI C. */ | |
1517 | { | |
1518 | register int i = c - '0'; | |
1519 | register int count = 0; | |
1520 | while (++count < 3) | |
1521 | { | |
1522 | if ((c = READCHAR) >= '0' && c <= '7') | |
1523 | { | |
1524 | i *= 8; | |
1525 | i += c - '0'; | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | UNREAD (c); | |
1530 | break; | |
1531 | } | |
1532 | } | |
1533 | return i; | |
1534 | } | |
1535 | ||
1536 | case 'x': | |
1537 | /* A hex escape, as in ANSI C. */ | |
1538 | { | |
1539 | int i = 0; | |
1540 | while (1) | |
1541 | { | |
1542 | c = READCHAR; | |
1543 | if (c >= '0' && c <= '9') | |
1544 | { | |
1545 | i *= 16; | |
1546 | i += c - '0'; | |
1547 | } | |
1548 | else if ((c >= 'a' && c <= 'f') | |
1549 | || (c >= 'A' && c <= 'F')) | |
1550 | { | |
1551 | i *= 16; | |
1552 | if (c >= 'a' && c <= 'f') | |
1553 | i += c - 'a' + 10; | |
1554 | else | |
1555 | i += c - 'A' + 10; | |
1556 | } | |
1557 | else | |
1558 | { | |
1559 | UNREAD (c); | |
1560 | break; | |
1561 | } | |
1562 | } | |
1563 | return i; | |
1564 | } | |
1565 | ||
1566 | default: | |
fe0e03f3 KH |
1567 | if (BASE_LEADING_CODE_P (c)) |
1568 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1569 | return c; |
1570 | } | |
1571 | } | |
1572 | ||
6428369f KH |
1573 | /* If the next token is ')' or ']' or '.', we store that character |
1574 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1575 | zero in *PCH and we read and return one lisp object. |
1576 | ||
1577 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1578 | ||
078e7b4a | 1579 | static Lisp_Object |
17634846 | 1580 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1581 | register Lisp_Object readcharfun; |
e28552a4 | 1582 | int *pch; |
17634846 | 1583 | int first_in_list; |
078e7b4a JB |
1584 | { |
1585 | register int c; | |
4ad679f9 EN |
1586 | int uninterned_symbol = 0; |
1587 | ||
6428369f | 1588 | *pch = 0; |
078e7b4a JB |
1589 | |
1590 | retry: | |
1591 | ||
1592 | c = READCHAR; | |
1593 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1594 | ||
1595 | switch (c) | |
1596 | { | |
1597 | case '(': | |
1598 | return read_list (0, readcharfun); | |
1599 | ||
1600 | case '[': | |
c15cfd1f | 1601 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1602 | |
1603 | case ')': | |
1604 | case ']': | |
078e7b4a | 1605 | { |
6428369f KH |
1606 | *pch = c; |
1607 | return Qnil; | |
078e7b4a JB |
1608 | } |
1609 | ||
1610 | case '#': | |
200f684e | 1611 | c = READCHAR; |
c2390933 RS |
1612 | if (c == '^') |
1613 | { | |
1614 | c = READCHAR; | |
1615 | if (c == '[') | |
1616 | { | |
1617 | Lisp_Object tmp; | |
c15cfd1f | 1618 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
1619 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
1620 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1621 | error ("Invalid size char-table"); | |
1622 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1623 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1624 | return tmp; |
1625 | } | |
3701b5de KH |
1626 | else if (c == '^') |
1627 | { | |
1628 | c = READCHAR; | |
1629 | if (c == '[') | |
1630 | { | |
1631 | Lisp_Object tmp; | |
c15cfd1f | 1632 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
1633 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
1634 | error ("Invalid size char-table"); | |
1635 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1636 | XCHAR_TABLE (tmp)->top = Qnil; | |
1637 | return tmp; | |
1638 | } | |
1639 | Fsignal (Qinvalid_read_syntax, | |
1640 | Fcons (make_string ("#^^", 3), Qnil)); | |
1641 | } | |
c2390933 RS |
1642 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1643 | } | |
1644 | if (c == '&') | |
1645 | { | |
1646 | Lisp_Object length; | |
1647 | length = read1 (readcharfun, pch, first_in_list); | |
1648 | c = READCHAR; | |
1649 | if (c == '"') | |
1650 | { | |
1651 | Lisp_Object tmp, val; | |
90ed3ec5 | 1652 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1653 | / BITS_PER_CHAR); |
c2390933 RS |
1654 | |
1655 | UNREAD (c); | |
1656 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1657 | if (size_in_chars != XSTRING (tmp)->size |
1658 | /* We used to print 1 char too many | |
1659 | when the number of bits was a multiple of 8. | |
1660 | Accept such input in case it came from an old version. */ | |
1661 | && ! (XFASTINT (length) | |
1662 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1663 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1664 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1665 | |
1666 | val = Fmake_bool_vector (length, Qnil); | |
1667 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1668 | size_in_chars); | |
67d3b149 EZ |
1669 | /* Clear the extraneous bits in the last byte. */ |
1670 | if (XINT (length) != size_in_chars * BITS_PER_CHAR) | |
1671 | XBOOL_VECTOR (val)->data[size_in_chars - 1] | |
1672 | &= (1 << (XINT (length) % BITS_PER_CHAR)) - 1; | |
c2390933 RS |
1673 | return val; |
1674 | } | |
ec3bbd7d | 1675 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1676 | Qnil)); |
c2390933 | 1677 | } |
200f684e RS |
1678 | if (c == '[') |
1679 | { | |
1680 | /* Accept compiled functions at read-time so that we don't have to | |
1681 | build them using function calls. */ | |
748ef62f | 1682 | Lisp_Object tmp; |
c15cfd1f | 1683 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
1684 | return Fmake_byte_code (XVECTOR (tmp)->size, |
1685 | XVECTOR (tmp)->contents); | |
200f684e | 1686 | } |
748ef62f RS |
1687 | #ifdef USE_TEXT_PROPERTIES |
1688 | if (c == '(') | |
1689 | { | |
1690 | Lisp_Object tmp; | |
1691 | struct gcpro gcpro1; | |
e28552a4 | 1692 | int ch; |
748ef62f RS |
1693 | |
1694 | /* Read the string itself. */ | |
17634846 | 1695 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1696 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1697 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1698 | GCPRO1 (tmp); | |
1699 | /* Read the intervals and their properties. */ | |
1700 | while (1) | |
1701 | { | |
1702 | Lisp_Object beg, end, plist; | |
1703 | ||
17634846 | 1704 | beg = read1 (readcharfun, &ch, 0); |
6428369f KH |
1705 | if (ch == ')') |
1706 | break; | |
1707 | if (ch == 0) | |
17634846 | 1708 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1709 | if (ch == 0) |
17634846 | 1710 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1711 | if (ch) |
748ef62f | 1712 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1713 | Fcons (build_string ("invalid string property list"), |
1714 | Qnil)); | |
748ef62f RS |
1715 | Fset_text_properties (beg, end, plist, tmp); |
1716 | } | |
1717 | UNGCPRO; | |
1718 | return tmp; | |
1719 | } | |
1720 | #endif | |
20ea2964 RS |
1721 | /* #@NUMBER is used to skip NUMBER following characters. |
1722 | That's used in .elc files to skip over doc strings | |
1723 | and function definitions. */ | |
1724 | if (c == '@') | |
1725 | { | |
1726 | int i, nskip = 0; | |
1727 | ||
1728 | /* Read a decimal integer. */ | |
1729 | while ((c = READCHAR) >= 0 | |
1730 | && c >= '0' && c <= '9') | |
1731 | { | |
1732 | nskip *= 10; | |
1733 | nskip += c - '0'; | |
1734 | } | |
1735 | if (c >= 0) | |
1736 | UNREAD (c); | |
1737 | ||
b2a30870 RS |
1738 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
1739 | { | |
1740 | /* If we are supposed to force doc strings into core right now, | |
1741 | record the last string that we skipped, | |
1742 | and record where in the file it comes from. */ | |
c15cfd1f RS |
1743 | |
1744 | /* But first exchange saved_doc_string | |
1745 | with prev_saved_doc_string, so we save two strings. */ | |
1746 | { | |
1747 | char *temp = saved_doc_string; | |
1748 | int temp_size = saved_doc_string_size; | |
1749 | int temp_pos = saved_doc_string_position; | |
1750 | int temp_len = saved_doc_string_length; | |
1751 | ||
1752 | saved_doc_string = prev_saved_doc_string; | |
1753 | saved_doc_string_size = prev_saved_doc_string_size; | |
1754 | saved_doc_string_position = prev_saved_doc_string_position; | |
1755 | saved_doc_string_length = prev_saved_doc_string_length; | |
1756 | ||
1757 | prev_saved_doc_string = temp; | |
1758 | prev_saved_doc_string_size = temp_size; | |
1759 | prev_saved_doc_string_position = temp_pos; | |
1760 | prev_saved_doc_string_length = temp_len; | |
1761 | } | |
1762 | ||
b2a30870 RS |
1763 | if (saved_doc_string_size == 0) |
1764 | { | |
1765 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1766 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1767 | } |
1768 | if (nskip > saved_doc_string_size) | |
1769 | { | |
1770 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1771 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1772 | saved_doc_string_size); | |
b2a30870 RS |
1773 | } |
1774 | ||
1775 | saved_doc_string_position = ftell (instream); | |
1776 | ||
1777 | /* Copy that many characters into saved_doc_string. */ | |
1778 | for (i = 0; i < nskip && c >= 0; i++) | |
1779 | saved_doc_string[i] = c = READCHAR; | |
1780 | ||
1781 | saved_doc_string_length = i; | |
1782 | } | |
1783 | else | |
b2a30870 RS |
1784 | { |
1785 | /* Skip that many characters. */ | |
1786 | for (i = 0; i < nskip && c >= 0; i++) | |
1787 | c = READCHAR; | |
1788 | } | |
d49f0c1a | 1789 | |
20ea2964 RS |
1790 | goto retry; |
1791 | } | |
1792 | if (c == '$') | |
1793 | return Vload_file_name; | |
2b6cae0c RS |
1794 | if (c == '\'') |
1795 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1796 | /* #:foo is the uninterned symbol named foo. */ |
1797 | if (c == ':') | |
1798 | { | |
1799 | uninterned_symbol = 1; | |
1800 | c = READCHAR; | |
1801 | goto default_label; | |
1802 | } | |
1803 | /* Reader forms that can reuse previously read objects. */ | |
1804 | if (c >= '0' && c <= '9') | |
1805 | { | |
1806 | int n = 0; | |
1807 | Lisp_Object tem; | |
2b6cae0c | 1808 | |
4ad679f9 EN |
1809 | /* Read a non-negative integer. */ |
1810 | while (c >= '0' && c <= '9') | |
1811 | { | |
1812 | n *= 10; | |
1813 | n += c - '0'; | |
1814 | c = READCHAR; | |
1815 | } | |
1816 | /* #n=object returns object, but associates it with n for #n#. */ | |
1817 | if (c == '=') | |
1818 | { | |
9e062b6c RS |
1819 | /* Make a placeholder for #n# to use temporarily */ |
1820 | Lisp_Object placeholder; | |
1821 | Lisp_Object cell; | |
1822 | ||
1823 | placeholder = Fcons(Qnil, Qnil); | |
1824 | cell = Fcons (make_number (n), placeholder); | |
1825 | read_objects = Fcons (cell, read_objects); | |
1826 | ||
1827 | /* Read the object itself. */ | |
4ad679f9 | 1828 | tem = read0 (readcharfun); |
9e062b6c RS |
1829 | |
1830 | /* Now put it everywhere the placeholder was... */ | |
1831 | substitute_object_in_subtree (tem, placeholder); | |
1832 | ||
1833 | /* ...and #n# will use the real value from now on. */ | |
1834 | Fsetcdr (cell, tem); | |
1835 | ||
4ad679f9 EN |
1836 | return tem; |
1837 | } | |
1838 | /* #n# returns a previously read object. */ | |
1839 | if (c == '#') | |
1840 | { | |
1841 | tem = Fassq (make_number (n), read_objects); | |
1842 | if (CONSP (tem)) | |
1843 | return XCDR (tem); | |
1844 | /* Fall through to error message. */ | |
1845 | } | |
1846 | /* Fall through to error message. */ | |
1847 | } | |
20ea2964 | 1848 | |
200f684e | 1849 | UNREAD (c); |
748ef62f | 1850 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
1851 | |
1852 | case ';': | |
1853 | while ((c = READCHAR) >= 0 && c != '\n'); | |
1854 | goto retry; | |
1855 | ||
1856 | case '\'': | |
1857 | { | |
1858 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
1859 | } | |
1860 | ||
17634846 RS |
1861 | case '`': |
1862 | if (first_in_list) | |
1863 | goto default_label; | |
1864 | else | |
1865 | { | |
1866 | Lisp_Object value; | |
1867 | ||
1868 | new_backquote_flag = 1; | |
1869 | value = read0 (readcharfun); | |
1870 | new_backquote_flag = 0; | |
1871 | ||
1872 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
1873 | } | |
1874 | ||
1875 | case ',': | |
1876 | if (new_backquote_flag) | |
1877 | { | |
1878 | Lisp_Object comma_type = Qnil; | |
1879 | Lisp_Object value; | |
1880 | int ch = READCHAR; | |
1881 | ||
1882 | if (ch == '@') | |
1883 | comma_type = Qcomma_at; | |
1884 | else if (ch == '.') | |
1885 | comma_type = Qcomma_dot; | |
1886 | else | |
1887 | { | |
1888 | if (ch >= 0) UNREAD (ch); | |
1889 | comma_type = Qcomma; | |
1890 | } | |
1891 | ||
1892 | new_backquote_flag = 0; | |
1893 | value = read0 (readcharfun); | |
1894 | new_backquote_flag = 1; | |
1895 | return Fcons (comma_type, Fcons (value, Qnil)); | |
1896 | } | |
1897 | else | |
1898 | goto default_label; | |
1899 | ||
078e7b4a JB |
1900 | case '?': |
1901 | { | |
1902 | register Lisp_Object val; | |
1903 | ||
1904 | c = READCHAR; | |
1905 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1906 | ||
1907 | if (c == '\\') | |
e7fc914b | 1908 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
1909 | else if (BASE_LEADING_CODE_P (c)) |
1910 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 1911 | |
6f7f43d5 | 1912 | return make_number (c); |
078e7b4a JB |
1913 | } |
1914 | ||
00a9a935 | 1915 | case '"': |
078e7b4a JB |
1916 | { |
1917 | register char *p = read_buffer; | |
1918 | register char *end = read_buffer + read_buffer_size; | |
1919 | register int c; | |
e7fc914b KH |
1920 | /* Nonzero if we saw an escape sequence specifying |
1921 | a multibyte character. */ | |
1922 | int force_multibyte = 0; | |
1923 | /* Nonzero if we saw an escape sequence specifying | |
1924 | a single-byte character. */ | |
1925 | int force_singlebyte = 0; | |
078e7b4a | 1926 | int cancel = 0; |
e7fc914b | 1927 | int nchars; |
078e7b4a JB |
1928 | |
1929 | while ((c = READCHAR) >= 0 | |
1930 | && c != '\"') | |
1931 | { | |
bed23cb2 | 1932 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
1933 | { |
1934 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1935 | p += new - read_buffer; | |
1936 | read_buffer += new - read_buffer; | |
1937 | end = read_buffer + read_buffer_size; | |
1938 | } | |
bed23cb2 | 1939 | |
078e7b4a | 1940 | if (c == '\\') |
03e88613 | 1941 | { |
e7fc914b | 1942 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
1943 | |
1944 | /* C is -1 if \ newline has just been seen */ | |
1945 | if (c == -1) | |
03e88613 | 1946 | { |
bed23cb2 RS |
1947 | if (p == read_buffer) |
1948 | cancel = 1; | |
03e88613 RS |
1949 | continue; |
1950 | } | |
bed23cb2 | 1951 | |
94e554db RS |
1952 | /* If an escape specifies a non-ASCII single-byte character, |
1953 | this must be a unibyte string. */ | |
164d590d KH |
1954 | if (SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK)) |
1955 | && ! ASCII_BYTE_P ((c & ~CHAR_MODIFIER_MASK))) | |
e7fc914b | 1956 | force_singlebyte = 1; |
03e88613 | 1957 | } |
6f7f43d5 | 1958 | |
164d590d | 1959 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) |
078e7b4a | 1960 | { |
bed23cb2 RS |
1961 | unsigned char workbuf[4]; |
1962 | unsigned char *str = workbuf; | |
1963 | int length; | |
1964 | ||
164d590d KH |
1965 | /* Any modifiers for a multibyte character are invalid. */ |
1966 | if (c & CHAR_MODIFIER_MASK) | |
1967 | error ("Invalid modifier in string"); | |
bed23cb2 RS |
1968 | length = non_ascii_char_to_string (c, workbuf, &str); |
1969 | if (length > 1) | |
1970 | force_multibyte = 1; | |
1971 | ||
1972 | bcopy (str, p, length); | |
1973 | p += length; | |
078e7b4a JB |
1974 | } |
1975 | else | |
f943104a | 1976 | { |
988c2f83 RS |
1977 | /* Allow `\C- ' and `\C-?'. */ |
1978 | if (c == (CHAR_CTL | ' ')) | |
1979 | c = 0; | |
1980 | else if (c == (CHAR_CTL | '?')) | |
1981 | c = 127; | |
1982 | ||
164d590d KH |
1983 | if (c & CHAR_SHIFT) |
1984 | { | |
1985 | /* Shift modifier is valid only with [A-Za-z]. */ | |
1986 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
1987 | c &= ~CHAR_SHIFT; | |
1988 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
1989 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
1990 | } | |
1991 | ||
f943104a KH |
1992 | if (c & CHAR_META) |
1993 | /* Move the meta bit to the right place for a string. */ | |
1994 | c = (c & ~CHAR_META) | 0x80; | |
1995 | if (c & ~0xff) | |
1996 | error ("Invalid modifier in string"); | |
1997 | *p++ = c; | |
1998 | } | |
078e7b4a | 1999 | } |
6f7f43d5 RS |
2000 | if (c < 0) |
2001 | return Fsignal (Qend_of_file, Qnil); | |
078e7b4a JB |
2002 | |
2003 | /* If purifying, and string starts with \ newline, | |
2004 | return zero instead. This is for doc strings | |
08564963 | 2005 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2006 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2007 | return make_number (0); |
2008 | ||
6f46329a | 2009 | if (force_multibyte) |
1d10ac5b | 2010 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); |
6f46329a RS |
2011 | else if (force_singlebyte) |
2012 | nchars = p - read_buffer; | |
94e554db RS |
2013 | else if (load_convert_to_unibyte) |
2014 | { | |
2015 | Lisp_Object string; | |
2016 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); | |
2017 | if (p - read_buffer != nchars) | |
2018 | { | |
2019 | string = make_multibyte_string (read_buffer, nchars, | |
2020 | p - read_buffer); | |
2021 | return Fstring_make_unibyte (string); | |
2022 | } | |
2023 | } | |
8db9dc66 RS |
2024 | else if (EQ (readcharfun, Qget_file_char) |
2025 | || EQ (readcharfun, Qlambda)) | |
bed23cb2 RS |
2026 | /* Nowadays, reading directly from a file |
2027 | is used only for compiled Emacs Lisp files, | |
8db9dc66 RS |
2028 | and those always use the Emacs internal encoding. |
2029 | Meanwhile, Qlambda is used for reading dynamic byte code | |
2030 | (compiled with byte-compile-dynamic = t). */ | |
bed23cb2 | 2031 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); |
e28552a4 | 2032 | else |
bed23cb2 RS |
2033 | /* In all other cases, if we read these bytes as |
2034 | separate characters, treat them as separate characters now. */ | |
e7fc914b KH |
2035 | nchars = p - read_buffer; |
2036 | ||
2037 | if (read_pure) | |
491f16a2 RS |
2038 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
2039 | (force_multibyte | |
2040 | || (p - read_buffer != nchars))); | |
2041 | return make_specified_string (read_buffer, nchars, p - read_buffer, | |
2042 | (force_multibyte | |
2043 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2044 | } |
2045 | ||
109d300c JB |
2046 | case '.': |
2047 | { | |
2048 | #ifdef LISP_FLOAT_TYPE | |
2049 | /* If a period is followed by a number, then we should read it | |
2050 | as a floating point number. Otherwise, it denotes a dotted | |
2051 | pair. */ | |
2052 | int next_char = READCHAR; | |
2053 | UNREAD (next_char); | |
2054 | ||
075027b1 | 2055 | if (! (next_char >= '0' && next_char <= '9')) |
109d300c JB |
2056 | #endif |
2057 | { | |
6428369f KH |
2058 | *pch = c; |
2059 | return Qnil; | |
109d300c JB |
2060 | } |
2061 | ||
2062 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2063 | below will now loop at least once, assuring that we will not | |
2064 | try to UNREAD two characters in a row. */ | |
2065 | } | |
078e7b4a | 2066 | default: |
17634846 | 2067 | default_label: |
078e7b4a JB |
2068 | if (c <= 040) goto retry; |
2069 | { | |
2070 | register char *p = read_buffer; | |
481c6336 | 2071 | int quoted = 0; |
078e7b4a JB |
2072 | |
2073 | { | |
2074 | register char *end = read_buffer + read_buffer_size; | |
2075 | ||
6f7f43d5 RS |
2076 | while (c > 040 |
2077 | && !(c == '\"' || c == '\'' || c == ';' || c == '?' | |
2078 | || c == '(' || c == ')' | |
109d300c | 2079 | #ifndef LISP_FLOAT_TYPE |
6f7f43d5 RS |
2080 | /* If we have floating-point support, then we need |
2081 | to allow <digits><dot><digits>. */ | |
2082 | || c =='.' | |
078e7b4a | 2083 | #endif /* not LISP_FLOAT_TYPE */ |
6f7f43d5 RS |
2084 | || c == '[' || c == ']' || c == '#' |
2085 | )) | |
078e7b4a | 2086 | { |
bed23cb2 | 2087 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
2088 | { |
2089 | register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2090 | p += new - read_buffer; | |
2091 | read_buffer += new - read_buffer; | |
2092 | end = read_buffer + read_buffer_size; | |
2093 | } | |
2094 | if (c == '\\') | |
481c6336 RS |
2095 | { |
2096 | c = READCHAR; | |
2097 | quoted = 1; | |
2098 | } | |
6f7f43d5 | 2099 | |
bed23cb2 RS |
2100 | if (! SINGLE_BYTE_CHAR_P (c)) |
2101 | { | |
2102 | unsigned char workbuf[4]; | |
2103 | unsigned char *str = workbuf; | |
2104 | int length; | |
2105 | ||
2106 | length = non_ascii_char_to_string (c, workbuf, &str); | |
2107 | ||
2108 | bcopy (str, p, length); | |
2109 | p += length; | |
2110 | } | |
2111 | else | |
2112 | *p++ = c; | |
6f7f43d5 | 2113 | |
078e7b4a JB |
2114 | c = READCHAR; |
2115 | } | |
2116 | ||
2117 | if (p == end) | |
2118 | { | |
2119 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2120 | p += new - read_buffer; | |
2121 | read_buffer += new - read_buffer; | |
2122 | /* end = read_buffer + read_buffer_size; */ | |
2123 | } | |
2124 | *p = 0; | |
2125 | if (c >= 0) | |
2126 | UNREAD (c); | |
2127 | } | |
2128 | ||
4ad679f9 | 2129 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2130 | { |
2131 | register char *p1; | |
2132 | register Lisp_Object val; | |
2133 | p1 = read_buffer; | |
2134 | if (*p1 == '+' || *p1 == '-') p1++; | |
2135 | /* Is it an integer? */ | |
2136 | if (p1 != p) | |
2137 | { | |
2138 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
dbc4e1c1 | 2139 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
2140 | /* Integers can have trailing decimal points. */ |
2141 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
dbc4e1c1 | 2142 | #endif |
481c6336 RS |
2143 | if (p1 == p) |
2144 | /* It is an integer. */ | |
2145 | { | |
dbc4e1c1 | 2146 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
2147 | if (p1[-1] == '.') |
2148 | p1[-1] = '\0'; | |
dbc4e1c1 | 2149 | #endif |
faca07fb RS |
2150 | if (sizeof (int) == sizeof (EMACS_INT)) |
2151 | XSETINT (val, atoi (read_buffer)); | |
2152 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2153 | XSETINT (val, atol (read_buffer)); | |
2154 | else | |
2155 | abort (); | |
481c6336 RS |
2156 | return val; |
2157 | } | |
2158 | } | |
078e7b4a | 2159 | #ifdef LISP_FLOAT_TYPE |
481c6336 | 2160 | if (isfloat_string (read_buffer)) |
eb659c41 | 2161 | { |
a8972052 PE |
2162 | /* Compute NaN and infinities using 0.0 in a variable, |
2163 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2164 | than we are. */ |
3c329963 | 2165 | double zero = 0.0; |
a8972052 PE |
2166 | |
2167 | double value; | |
2168 | ||
2169 | /* Negate the value ourselves. This treats 0, NaNs, | |
2170 | and infinity properly on IEEE floating point hosts, | |
2171 | and works around a common bug where atof ("-0.0") | |
2172 | drops the sign. */ | |
2173 | int negative = read_buffer[0] == '-'; | |
2174 | ||
2175 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2176 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2177 | switch (p[-1]) |
eb659c41 | 2178 | { |
a8972052 PE |
2179 | case 'F': |
2180 | value = 1.0 / zero; | |
2181 | break; | |
2182 | case 'N': | |
2183 | value = zero / zero; | |
2184 | break; | |
2185 | default: | |
2186 | value = atof (read_buffer + negative); | |
2187 | break; | |
eb659c41 | 2188 | } |
a8972052 PE |
2189 | |
2190 | return make_float (negative ? - value : value); | |
eb659c41 | 2191 | } |
078e7b4a | 2192 | #endif |
481c6336 | 2193 | } |
078e7b4a | 2194 | |
4ad679f9 EN |
2195 | if (uninterned_symbol) |
2196 | return make_symbol (read_buffer); | |
2197 | else | |
2198 | return intern (read_buffer); | |
078e7b4a JB |
2199 | } |
2200 | } | |
2201 | } | |
2202 | \f | |
9e062b6c RS |
2203 | |
2204 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2205 | static Lisp_Object seen_list; | |
2206 | ||
2207 | static void | |
2208 | substitute_object_in_subtree (object, placeholder) | |
2209 | Lisp_Object object; | |
2210 | Lisp_Object placeholder; | |
2211 | { | |
2212 | Lisp_Object check_object; | |
2213 | ||
2214 | /* We haven't seen any objects when we start. */ | |
2215 | seen_list = Qnil; | |
2216 | ||
2217 | /* Make all the substitutions. */ | |
2218 | check_object | |
2219 | = substitute_object_recurse (object, placeholder, object); | |
2220 | ||
2221 | /* Clear seen_list because we're done with it. */ | |
2222 | seen_list = Qnil; | |
2223 | ||
2224 | /* The returned object here is expected to always eq the | |
2225 | original. */ | |
2226 | if (!EQ (check_object, object)) | |
2227 | error ("Unexpected mutation error in reader"); | |
2228 | } | |
2229 | ||
2230 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2231 | #define SUBSTITUTE(get_val, set_val) \ | |
2232 | { \ | |
2233 | Lisp_Object old_value = get_val; \ | |
2234 | Lisp_Object true_value \ | |
2235 | = substitute_object_recurse (object, placeholder,\ | |
2236 | old_value); \ | |
2237 | \ | |
2238 | if (!EQ (old_value, true_value)) \ | |
2239 | { \ | |
2240 | set_val; \ | |
2241 | } \ | |
2242 | } | |
2243 | ||
2244 | static Lisp_Object | |
2245 | substitute_object_recurse (object, placeholder, subtree) | |
2246 | Lisp_Object object; | |
2247 | Lisp_Object placeholder; | |
2248 | Lisp_Object subtree; | |
2249 | { | |
2250 | /* If we find the placeholder, return the target object. */ | |
2251 | if (EQ (placeholder, subtree)) | |
2252 | return object; | |
2253 | ||
2254 | /* If we've been to this node before, don't explore it again. */ | |
2255 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2256 | return subtree; | |
2257 | ||
2258 | /* If this node can be the entry point to a cycle, remember that | |
2259 | we've seen it. It can only be such an entry point if it was made | |
2260 | by #n=, which means that we can find it as a value in | |
2261 | read_objects. */ | |
2262 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2263 | seen_list = Fcons (subtree, seen_list); | |
2264 | ||
2265 | /* Recurse according to subtree's type. | |
2266 | Every branch must return a Lisp_Object. */ | |
2267 | switch (XTYPE (subtree)) | |
2268 | { | |
2269 | case Lisp_Vectorlike: | |
2270 | { | |
2271 | int i; | |
2272 | int length = Flength(subtree); | |
2273 | for (i = 0; i < length; i++) | |
2274 | { | |
2275 | Lisp_Object idx = make_number (i); | |
2276 | SUBSTITUTE (Faref (subtree, idx), | |
2277 | Faset (subtree, idx, true_value)); | |
2278 | } | |
2279 | return subtree; | |
2280 | } | |
2281 | ||
2282 | case Lisp_Cons: | |
2283 | { | |
2284 | SUBSTITUTE (Fcar_safe (subtree), | |
2285 | Fsetcar (subtree, true_value)); | |
2286 | SUBSTITUTE (Fcdr_safe (subtree), | |
2287 | Fsetcdr (subtree, true_value)); | |
2288 | return subtree; | |
2289 | } | |
2290 | ||
2291 | #ifdef USE_TEXT_PROPERTIES | |
2292 | case Lisp_String: | |
2293 | { | |
2294 | /* Check for text properties in each interval. | |
2295 | substitute_in_interval contains part of the logic. */ | |
2296 | ||
2297 | INTERVAL root_interval = XSTRING (subtree)->intervals; | |
2298 | Lisp_Object arg = Fcons (object, placeholder); | |
2299 | ||
2300 | traverse_intervals (root_interval, 1, 0, | |
2301 | &substitute_in_interval, arg); | |
2302 | ||
2303 | return subtree; | |
2304 | } | |
2305 | #endif /* defined USE_TEXT_PROPERTIES */ | |
2306 | ||
2307 | /* Other types don't recurse any further. */ | |
2308 | default: | |
2309 | return subtree; | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | /* Helper function for substitute_object_recurse. */ | |
2314 | static void | |
2315 | substitute_in_interval (interval, arg) | |
2316 | INTERVAL interval; | |
2317 | Lisp_Object arg; | |
2318 | { | |
2319 | Lisp_Object object = Fcar (arg); | |
2320 | Lisp_Object placeholder = Fcdr (arg); | |
2321 | ||
2322 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2323 | } | |
2324 | ||
2325 | \f | |
078e7b4a JB |
2326 | #ifdef LISP_FLOAT_TYPE |
2327 | ||
078e7b4a JB |
2328 | #define LEAD_INT 1 |
2329 | #define DOT_CHAR 2 | |
2330 | #define TRAIL_INT 4 | |
2331 | #define E_CHAR 8 | |
2332 | #define EXP_INT 16 | |
2333 | ||
2334 | int | |
2335 | isfloat_string (cp) | |
2336 | register char *cp; | |
2337 | { | |
c1a2f60a | 2338 | register int state; |
078e7b4a | 2339 | |
d8578e58 RS |
2340 | char *start = cp; |
2341 | ||
078e7b4a JB |
2342 | state = 0; |
2343 | if (*cp == '+' || *cp == '-') | |
2344 | cp++; | |
2345 | ||
075027b1 | 2346 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2347 | { |
2348 | state |= LEAD_INT; | |
075027b1 RS |
2349 | while (*cp >= '0' && *cp <= '9') |
2350 | cp++; | |
078e7b4a JB |
2351 | } |
2352 | if (*cp == '.') | |
2353 | { | |
2354 | state |= DOT_CHAR; | |
2355 | cp++; | |
2356 | } | |
075027b1 | 2357 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2358 | { |
2359 | state |= TRAIL_INT; | |
075027b1 | 2360 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2361 | cp++; |
2362 | } | |
a35f88bf | 2363 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2364 | { |
2365 | state |= E_CHAR; | |
2366 | cp++; | |
e73997a1 RS |
2367 | if (*cp == '+' || *cp == '-') |
2368 | cp++; | |
078e7b4a | 2369 | } |
078e7b4a | 2370 | |
075027b1 | 2371 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2372 | { |
2373 | state |= EXP_INT; | |
075027b1 | 2374 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2375 | cp++; |
2376 | } | |
d8578e58 RS |
2377 | else if (cp == start) |
2378 | ; | |
eb659c41 RS |
2379 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2380 | { | |
2381 | state |= EXP_INT; | |
2382 | cp += 3; | |
2383 | } | |
2384 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2385 | { | |
2386 | state |= EXP_INT; | |
2387 | cp += 3; | |
2388 | } | |
2389 | ||
37579d7c | 2390 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2391 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2392 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2393 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2394 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2395 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a JB |
2396 | } |
2397 | #endif /* LISP_FLOAT_TYPE */ | |
2398 | \f | |
2399 | static Lisp_Object | |
c15cfd1f | 2400 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2401 | Lisp_Object readcharfun; |
c15cfd1f | 2402 | int bytecodeflag; |
078e7b4a JB |
2403 | { |
2404 | register int i; | |
2405 | register int size; | |
2406 | register Lisp_Object *ptr; | |
c15cfd1f | 2407 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2408 | register struct Lisp_Cons *otem; |
2409 | Lisp_Object len; | |
2410 | ||
2411 | tem = read_list (1, readcharfun); | |
2412 | len = Flength (tem); | |
2413 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2414 | ||
078e7b4a JB |
2415 | size = XVECTOR (vector)->size; |
2416 | ptr = XVECTOR (vector)->contents; | |
2417 | for (i = 0; i < size; i++) | |
2418 | { | |
c15cfd1f RS |
2419 | item = Fcar (tem); |
2420 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2421 | bytecode object, the docstring containing the bytecode and | |
2422 | constants values must be treated as unibyte and passed to | |
2423 | Fread, to get the actual bytecode string and constants vector. */ | |
2424 | if (bytecodeflag && load_force_doc_strings) | |
2425 | { | |
2426 | if (i == COMPILED_BYTECODE) | |
2427 | { | |
2428 | if (!STRINGP (item)) | |
2429 | error ("invalid byte code"); | |
2430 | ||
2431 | /* Delay handling the bytecode slot until we know whether | |
2432 | it is lazily-loaded (we can tell by whether the | |
2433 | constants slot is nil). */ | |
2434 | ptr[COMPILED_CONSTANTS] = item; | |
2435 | item = Qnil; | |
2436 | } | |
2437 | else if (i == COMPILED_CONSTANTS) | |
2438 | { | |
2439 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2440 | ||
2441 | if (NILP (item)) | |
2442 | { | |
2443 | /* Coerce string to unibyte (like string-as-unibyte, | |
2444 | but without generating extra garbage and | |
2445 | guaranteeing no change in the contents). */ | |
2446 | XSTRING (bytestr)->size = STRING_BYTES (XSTRING (bytestr)); | |
2447 | SET_STRING_BYTES (XSTRING (bytestr), -1); | |
2448 | ||
2449 | item = Fread (bytestr); | |
2450 | if (!CONSP (item)) | |
2451 | error ("invalid byte code"); | |
2452 | ||
2453 | otem = XCONS (item); | |
2454 | bytestr = XCONS (item)->car; | |
2455 | item = XCONS (item)->cdr; | |
2456 | free_cons (otem); | |
2457 | } | |
2458 | ||
2459 | /* Now handle the bytecode slot. */ | |
2460 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2461 | } | |
2462 | } | |
2463 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2464 | otem = XCONS (tem); |
2465 | tem = Fcdr (tem); | |
2466 | free_cons (otem); | |
2467 | } | |
2468 | return vector; | |
2469 | } | |
2470 | ||
6f7f43d5 RS |
2471 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2472 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2473 | and make structure pure. */ |
2474 | ||
2475 | static Lisp_Object | |
2476 | read_list (flag, readcharfun) | |
2477 | int flag; | |
2478 | register Lisp_Object readcharfun; | |
2479 | { | |
2480 | /* -1 means check next element for defun, | |
2481 | 0 means don't check, | |
2482 | 1 means already checked and found defun. */ | |
2483 | int defunflag = flag < 0 ? -1 : 0; | |
2484 | Lisp_Object val, tail; | |
2485 | register Lisp_Object elt, tem; | |
2486 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2487 | /* 0 is the normal case. |
b2a30870 RS |
2488 | 1 means this list is a doc reference; replace it with the number 0. |
2489 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 2490 | int doc_reference = 0; |
078e7b4a | 2491 | |
17634846 RS |
2492 | /* Initialize this to 1 if we are reading a list. */ |
2493 | int first_in_list = flag <= 0; | |
2494 | ||
078e7b4a JB |
2495 | val = Qnil; |
2496 | tail = Qnil; | |
2497 | ||
2498 | while (1) | |
2499 | { | |
e28552a4 | 2500 | int ch; |
078e7b4a | 2501 | GCPRO2 (val, tail); |
17634846 | 2502 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2503 | UNGCPRO; |
20ea2964 | 2504 | |
17634846 RS |
2505 | first_in_list = 0; |
2506 | ||
821d417e | 2507 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2508 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2509 | && ! NILP (elt) |
821d417e RS |
2510 | && !NILP (Vpurify_flag)) |
2511 | { | |
2512 | if (NILP (Vdoc_file_name)) | |
2513 | /* We have not yet called Snarf-documentation, so assume | |
2514 | this file is described in the DOC-MM.NN file | |
2515 | and Snarf-documentation will fill in the right value later. | |
2516 | For now, replace the whole list with 0. */ | |
2517 | doc_reference = 1; | |
2518 | else | |
2519 | /* We have already called Snarf-documentation, so make a relative | |
2520 | file name for this file, so it can be found properly | |
2521 | in the installed Lisp directory. | |
2522 | We don't use Fexpand_file_name because that would make | |
2523 | the directory absolute now. */ | |
2524 | elt = concat2 (build_string ("../lisp/"), | |
2525 | Ffile_name_nondirectory (elt)); | |
2526 | } | |
b2a30870 | 2527 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2528 | && ! NILP (elt) |
b2a30870 RS |
2529 | && load_force_doc_strings) |
2530 | doc_reference = 2; | |
20ea2964 | 2531 | |
6428369f | 2532 | if (ch) |
078e7b4a JB |
2533 | { |
2534 | if (flag > 0) | |
2535 | { | |
6428369f | 2536 | if (ch == ']') |
078e7b4a | 2537 | return val; |
821d417e RS |
2538 | Fsignal (Qinvalid_read_syntax, |
2539 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2540 | } |
6428369f | 2541 | if (ch == ')') |
078e7b4a | 2542 | return val; |
6428369f | 2543 | if (ch == '.') |
078e7b4a JB |
2544 | { |
2545 | GCPRO2 (val, tail); | |
265a9e55 | 2546 | if (!NILP (tail)) |
078e7b4a JB |
2547 | XCONS (tail)->cdr = read0 (readcharfun); |
2548 | else | |
2549 | val = read0 (readcharfun); | |
17634846 | 2550 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2551 | UNGCPRO; |
6428369f | 2552 | if (ch == ')') |
821d417e RS |
2553 | { |
2554 | if (doc_reference == 1) | |
2555 | return make_number (0); | |
b2a30870 RS |
2556 | if (doc_reference == 2) |
2557 | { | |
2558 | /* Get a doc string from the file we are loading. | |
2559 | If it's in saved_doc_string, get it from there. */ | |
2560 | int pos = XINT (XCONS (val)->cdr); | |
c15cfd1f RS |
2561 | /* Position is negative for user variables. */ |
2562 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
2563 | if (pos >= saved_doc_string_position |
2564 | && pos < (saved_doc_string_position | |
2565 | + saved_doc_string_length)) | |
2566 | { | |
2567 | int start = pos - saved_doc_string_position; | |
2568 | int from, to; | |
2569 | ||
2570 | /* Process quoting with ^A, | |
2571 | and find the end of the string, | |
2572 | which is marked with ^_ (037). */ | |
2573 | for (from = start, to = start; | |
2574 | saved_doc_string[from] != 037;) | |
2575 | { | |
2576 | int c = saved_doc_string[from++]; | |
2577 | if (c == 1) | |
2578 | { | |
2579 | c = saved_doc_string[from++]; | |
2580 | if (c == 1) | |
2581 | saved_doc_string[to++] = c; | |
2582 | else if (c == '0') | |
2583 | saved_doc_string[to++] = 0; | |
2584 | else if (c == '_') | |
2585 | saved_doc_string[to++] = 037; | |
2586 | } | |
2587 | else | |
2588 | saved_doc_string[to++] = c; | |
2589 | } | |
2590 | ||
2591 | return make_string (saved_doc_string + start, | |
2592 | to - start); | |
2593 | } | |
c15cfd1f RS |
2594 | /* Look in prev_saved_doc_string the same way. */ |
2595 | else if (pos >= prev_saved_doc_string_position | |
2596 | && pos < (prev_saved_doc_string_position | |
2597 | + prev_saved_doc_string_length)) | |
2598 | { | |
2599 | int start = pos - prev_saved_doc_string_position; | |
2600 | int from, to; | |
2601 | ||
2602 | /* Process quoting with ^A, | |
2603 | and find the end of the string, | |
2604 | which is marked with ^_ (037). */ | |
2605 | for (from = start, to = start; | |
2606 | prev_saved_doc_string[from] != 037;) | |
2607 | { | |
2608 | int c = prev_saved_doc_string[from++]; | |
2609 | if (c == 1) | |
2610 | { | |
2611 | c = prev_saved_doc_string[from++]; | |
2612 | if (c == 1) | |
2613 | prev_saved_doc_string[to++] = c; | |
2614 | else if (c == '0') | |
2615 | prev_saved_doc_string[to++] = 0; | |
2616 | else if (c == '_') | |
2617 | prev_saved_doc_string[to++] = 037; | |
2618 | } | |
2619 | else | |
2620 | prev_saved_doc_string[to++] = c; | |
2621 | } | |
2622 | ||
2623 | return make_string (prev_saved_doc_string + start, | |
2624 | to - start); | |
2625 | } | |
b2a30870 | 2626 | else |
6fe9cce5 | 2627 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
2628 | } |
2629 | ||
821d417e RS |
2630 | return val; |
2631 | } | |
078e7b4a JB |
2632 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2633 | } | |
2634 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2635 | } | |
2636 | tem = (read_pure && flag <= 0 | |
2637 | ? pure_cons (elt, Qnil) | |
2638 | : Fcons (elt, Qnil)); | |
265a9e55 | 2639 | if (!NILP (tail)) |
078e7b4a JB |
2640 | XCONS (tail)->cdr = tem; |
2641 | else | |
2642 | val = tem; | |
2643 | tail = tem; | |
2644 | if (defunflag < 0) | |
2645 | defunflag = EQ (elt, Qdefun); | |
2646 | else if (defunflag > 0) | |
2647 | read_pure = 1; | |
2648 | } | |
2649 | } | |
2650 | \f | |
2651 | Lisp_Object Vobarray; | |
2652 | Lisp_Object initial_obarray; | |
2653 | ||
d007f5c8 RS |
2654 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2655 | ||
2656 | int oblookup_last_bucket_number; | |
2657 | ||
2658 | static int hash_string (); | |
2659 | Lisp_Object oblookup (); | |
2660 | ||
2661 | /* Get an error if OBARRAY is not an obarray. | |
2662 | If it is one, return it. */ | |
2663 | ||
078e7b4a JB |
2664 | Lisp_Object |
2665 | check_obarray (obarray) | |
2666 | Lisp_Object obarray; | |
2667 | { | |
cfff016d | 2668 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2669 | { |
2670 | /* If Vobarray is now invalid, force it to be valid. */ | |
2671 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2672 | ||
2673 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2674 | } | |
2675 | return obarray; | |
2676 | } | |
2677 | ||
d007f5c8 RS |
2678 | /* Intern the C string STR: return a symbol with that name, |
2679 | interned in the current obarray. */ | |
078e7b4a JB |
2680 | |
2681 | Lisp_Object | |
2682 | intern (str) | |
2683 | char *str; | |
2684 | { | |
2685 | Lisp_Object tem; | |
2686 | int len = strlen (str); | |
153a17b7 | 2687 | Lisp_Object obarray; |
078e7b4a | 2688 | |
153a17b7 | 2689 | obarray = Vobarray; |
cfff016d | 2690 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2691 | obarray = check_obarray (obarray); |
e28552a4 | 2692 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2693 | if (SYMBOLP (tem)) |
078e7b4a | 2694 | return tem; |
87631ef7 | 2695 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2696 | } |
4ad679f9 EN |
2697 | |
2698 | /* Create an uninterned symbol with name STR. */ | |
2699 | ||
2700 | Lisp_Object | |
2701 | make_symbol (str) | |
2702 | char *str; | |
2703 | { | |
2704 | int len = strlen (str); | |
2705 | ||
2706 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 2707 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
2708 | : make_string (str, len))); |
2709 | } | |
d007f5c8 | 2710 | \f |
078e7b4a JB |
2711 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2712 | "Return the canonical symbol whose name is STRING.\n\ | |
2713 | If there is none, one is created by this function and returned.\n\ | |
2714 | A second optional argument specifies the obarray to use;\n\ | |
2715 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2716 | (string, obarray) |
2717 | Lisp_Object string, obarray; | |
078e7b4a JB |
2718 | { |
2719 | register Lisp_Object tem, sym, *ptr; | |
2720 | ||
265a9e55 | 2721 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2722 | obarray = check_obarray (obarray); |
2723 | ||
9391b698 | 2724 | CHECK_STRING (string, 0); |
078e7b4a | 2725 | |
e28552a4 RS |
2726 | tem = oblookup (obarray, XSTRING (string)->data, |
2727 | XSTRING (string)->size, | |
fc932ac6 | 2728 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2729 | if (!INTEGERP (tem)) |
078e7b4a JB |
2730 | return tem; |
2731 | ||
265a9e55 | 2732 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2733 | string = Fpurecopy (string); |
2734 | sym = Fmake_symbol (string); | |
4ad679f9 | 2735 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2736 | |
bdd47b1c | 2737 | if ((XSTRING (string)->data[0] == ':') |
a458d45d | 2738 | && EQ (obarray, initial_obarray)) |
a0549832 RS |
2739 | XSYMBOL (sym)->value = sym; |
2740 | ||
078e7b4a | 2741 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2742 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2743 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2744 | else | |
2745 | XSYMBOL (sym)->next = 0; | |
2746 | *ptr = sym; | |
2747 | return sym; | |
2748 | } | |
2749 | ||
2750 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
2751 | "Return the canonical symbol whose name is STRING, or nil if none exists.\n\ | |
2752 | A second optional argument specifies the obarray to use;\n\ | |
2753 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2754 | (string, obarray) |
2755 | Lisp_Object string, obarray; | |
078e7b4a JB |
2756 | { |
2757 | register Lisp_Object tem; | |
2758 | ||
265a9e55 | 2759 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2760 | obarray = check_obarray (obarray); |
2761 | ||
9391b698 | 2762 | CHECK_STRING (string, 0); |
078e7b4a | 2763 | |
e28552a4 RS |
2764 | tem = oblookup (obarray, XSTRING (string)->data, |
2765 | XSTRING (string)->size, | |
fc932ac6 | 2766 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2767 | if (!INTEGERP (tem)) |
078e7b4a JB |
2768 | return tem; |
2769 | return Qnil; | |
2770 | } | |
d007f5c8 RS |
2771 | \f |
2772 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2773 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2774 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2775 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2776 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2777 | OBARRAY defaults to the value of the variable `obarray'.") | |
2778 | (name, obarray) | |
2779 | Lisp_Object name, obarray; | |
2780 | { | |
2781 | register Lisp_Object string, tem; | |
2782 | int hash; | |
2783 | ||
2784 | if (NILP (obarray)) obarray = Vobarray; | |
2785 | obarray = check_obarray (obarray); | |
2786 | ||
2787 | if (SYMBOLP (name)) | |
2788 | XSETSTRING (string, XSYMBOL (name)->name); | |
2789 | else | |
2790 | { | |
2791 | CHECK_STRING (name, 0); | |
2792 | string = name; | |
2793 | } | |
2794 | ||
e28552a4 RS |
2795 | tem = oblookup (obarray, XSTRING (string)->data, |
2796 | XSTRING (string)->size, | |
fc932ac6 | 2797 | STRING_BYTES (XSTRING (string))); |
d007f5c8 RS |
2798 | if (INTEGERP (tem)) |
2799 | return Qnil; | |
2800 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2801 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2802 | return Qnil; | |
2803 | ||
ca69c42f RS |
2804 | XSYMBOL (tem)->obarray = Qnil; |
2805 | ||
d007f5c8 RS |
2806 | hash = oblookup_last_bucket_number; |
2807 | ||
2808 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2809 | { |
2810 | if (XSYMBOL (tem)->next) | |
2811 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2812 | else | |
2813 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2814 | } | |
d007f5c8 RS |
2815 | else |
2816 | { | |
2817 | Lisp_Object tail, following; | |
2818 | ||
2819 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2820 | XSYMBOL (tail)->next; | |
2821 | tail = following) | |
2822 | { | |
2823 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2824 | if (EQ (following, tem)) | |
2825 | { | |
2826 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2827 | break; | |
2828 | } | |
2829 | } | |
2830 | } | |
2831 | ||
2832 | return Qt; | |
2833 | } | |
2834 | \f | |
2835 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
2836 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
2837 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
2838 | |
2839 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
2840 | |
2841 | Lisp_Object | |
e28552a4 | 2842 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
2843 | Lisp_Object obarray; |
2844 | register char *ptr; | |
e28552a4 | 2845 | int size, size_byte; |
078e7b4a | 2846 | { |
7a70b397 RS |
2847 | int hash; |
2848 | int obsize; | |
078e7b4a JB |
2849 | register Lisp_Object tail; |
2850 | Lisp_Object bucket, tem; | |
2851 | ||
cfff016d | 2852 | if (!VECTORP (obarray) |
7c79a684 | 2853 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
2854 | { |
2855 | obarray = check_obarray (obarray); | |
2856 | obsize = XVECTOR (obarray)->size; | |
2857 | } | |
519418b3 RS |
2858 | /* This is sometimes needed in the middle of GC. */ |
2859 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 2860 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 2861 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
2862 | hash %= obsize; |
2863 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 2864 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
2865 | if (XFASTINT (bucket) == 0) |
2866 | ; | |
cfff016d | 2867 | else if (!SYMBOLP (bucket)) |
078e7b4a | 2868 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
2869 | else |
2870 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 2871 | { |
fc932ac6 | 2872 | if (STRING_BYTES (XSYMBOL (tail)->name) == size_byte |
e28552a4 RS |
2873 | && XSYMBOL (tail)->name->size == size |
2874 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
2875 | return tail; |
2876 | else if (XSYMBOL (tail)->next == 0) | |
2877 | break; | |
2878 | } | |
1805de4f | 2879 | XSETINT (tem, hash); |
078e7b4a JB |
2880 | return tem; |
2881 | } | |
2882 | ||
2883 | static int | |
2884 | hash_string (ptr, len) | |
2885 | unsigned char *ptr; | |
2886 | int len; | |
2887 | { | |
2888 | register unsigned char *p = ptr; | |
2889 | register unsigned char *end = p + len; | |
2890 | register unsigned char c; | |
2891 | register int hash = 0; | |
2892 | ||
2893 | while (p != end) | |
2894 | { | |
2895 | c = *p++; | |
2896 | if (c >= 0140) c -= 40; | |
2897 | hash = ((hash<<3) + (hash>>28) + c); | |
2898 | } | |
2899 | return hash & 07777777777; | |
2900 | } | |
d007f5c8 | 2901 | \f |
078e7b4a JB |
2902 | void |
2903 | map_obarray (obarray, fn, arg) | |
2904 | Lisp_Object obarray; | |
d5b28a9d | 2905 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
2906 | Lisp_Object arg; |
2907 | { | |
2908 | register int i; | |
2909 | register Lisp_Object tail; | |
2910 | CHECK_VECTOR (obarray, 1); | |
2911 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
2912 | { | |
2913 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 2914 | if (SYMBOLP (tail)) |
078e7b4a JB |
2915 | while (1) |
2916 | { | |
2917 | (*fn) (tail, arg); | |
2918 | if (XSYMBOL (tail)->next == 0) | |
2919 | break; | |
1805de4f | 2920 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
2921 | } |
2922 | } | |
2923 | } | |
2924 | ||
d5b28a9d | 2925 | void |
078e7b4a JB |
2926 | mapatoms_1 (sym, function) |
2927 | Lisp_Object sym, function; | |
2928 | { | |
2929 | call1 (function, sym); | |
2930 | } | |
2931 | ||
2932 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
2933 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
2934 | OBARRAY defaults to the value of `obarray'.") | |
2935 | (function, obarray) | |
2936 | Lisp_Object function, obarray; | |
2937 | { | |
2938 | Lisp_Object tem; | |
2939 | ||
265a9e55 | 2940 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2941 | obarray = check_obarray (obarray); |
2942 | ||
2943 | map_obarray (obarray, mapatoms_1, function); | |
2944 | return Qnil; | |
2945 | } | |
2946 | ||
5e88a39e | 2947 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
2948 | |
2949 | void | |
2950 | init_obarray () | |
2951 | { | |
2952 | Lisp_Object oblength; | |
2953 | int hash; | |
2954 | Lisp_Object *tem; | |
2955 | ||
baf69866 | 2956 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 2957 | |
491f16a2 | 2958 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
2959 | Vobarray = Fmake_vector (oblength, make_number (0)); |
2960 | initial_obarray = Vobarray; | |
2961 | staticpro (&initial_obarray); | |
2962 | /* Intern nil in the obarray */ | |
4ad679f9 | 2963 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
2964 | /* These locals are to kludge around a pyramid compiler bug. */ |
2965 | hash = hash_string ("nil", 3); | |
2966 | /* Separate statement here to avoid VAXC bug. */ | |
2967 | hash %= OBARRAY_SIZE; | |
2968 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
2969 | *tem = Qnil; | |
2970 | ||
491f16a2 | 2971 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
2972 | XSYMBOL (Qnil)->function = Qunbound; |
2973 | XSYMBOL (Qunbound)->value = Qunbound; | |
2974 | XSYMBOL (Qunbound)->function = Qunbound; | |
2975 | ||
2976 | Qt = intern ("t"); | |
2977 | XSYMBOL (Qnil)->value = Qnil; | |
2978 | XSYMBOL (Qnil)->plist = Qnil; | |
2979 | XSYMBOL (Qt)->value = Qt; | |
2980 | ||
2981 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
2982 | Vpurify_flag = Qt; | |
2983 | ||
2984 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 2985 | staticpro (&Qvariable_documentation); |
078e7b4a | 2986 | |
bed23cb2 | 2987 | read_buffer_size = 100 + MAX_LENGTH_OF_MULTI_BYTE_FORM; |
078e7b4a JB |
2988 | read_buffer = (char *) malloc (read_buffer_size); |
2989 | } | |
2990 | \f | |
2991 | void | |
2992 | defsubr (sname) | |
2993 | struct Lisp_Subr *sname; | |
2994 | { | |
2995 | Lisp_Object sym; | |
2996 | sym = intern (sname->symbol_name); | |
1805de4f | 2997 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
2998 | } |
2999 | ||
3000 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3001 | void | |
3002 | defalias (sname, string) | |
3003 | struct Lisp_Subr *sname; | |
3004 | char *string; | |
3005 | { | |
3006 | Lisp_Object sym; | |
3007 | sym = intern (string); | |
1805de4f | 3008 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3009 | } |
3010 | #endif /* NOTDEF */ | |
3011 | ||
078e7b4a | 3012 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3013 | to a C variable of type int. Sample call: */ |
950c215d | 3014 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3015 | void |
e9e00ff2 | 3016 | defvar_int (namestring, address) |
078e7b4a JB |
3017 | char *namestring; |
3018 | int *address; | |
078e7b4a | 3019 | { |
1a0f90f7 | 3020 | Lisp_Object sym, val; |
078e7b4a | 3021 | sym = intern (namestring); |
1a0f90f7 | 3022 | val = allocate_misc (); |
47e28b2c | 3023 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3024 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 3025 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3026 | } |
3027 | ||
3028 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 3029 | NIL if address contains 0 */ |
078e7b4a | 3030 | void |
e9e00ff2 | 3031 | defvar_bool (namestring, address) |
078e7b4a JB |
3032 | char *namestring; |
3033 | int *address; | |
078e7b4a | 3034 | { |
1a0f90f7 | 3035 | Lisp_Object sym, val; |
078e7b4a | 3036 | sym = intern (namestring); |
1a0f90f7 | 3037 | val = allocate_misc (); |
47e28b2c | 3038 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3039 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 3040 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3041 | } |
3042 | ||
1a0f90f7 KH |
3043 | /* Similar but define a variable whose value is the Lisp Object stored |
3044 | at address. Two versions: with and without gc-marking of the C | |
3045 | variable. The nopro version is used when that variable will be | |
3046 | gc-marked for some other reason, since marking the same slot twice | |
3047 | can cause trouble with strings. */ | |
078e7b4a | 3048 | void |
1a0f90f7 | 3049 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3050 | char *namestring; |
3051 | Lisp_Object *address; | |
078e7b4a | 3052 | { |
1a0f90f7 | 3053 | Lisp_Object sym, val; |
078e7b4a | 3054 | sym = intern (namestring); |
1a0f90f7 | 3055 | val = allocate_misc (); |
47e28b2c | 3056 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3057 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 3058 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3059 | } |
3060 | ||
078e7b4a | 3061 | void |
1a0f90f7 | 3062 | defvar_lisp (namestring, address) |
078e7b4a JB |
3063 | char *namestring; |
3064 | Lisp_Object *address; | |
078e7b4a | 3065 | { |
1a0f90f7 KH |
3066 | defvar_lisp_nopro (namestring, address); |
3067 | staticpro (address); | |
078e7b4a JB |
3068 | } |
3069 | ||
3070 | #ifndef standalone | |
3071 | ||
3072 | /* Similar but define a variable whose value is the Lisp Object stored in | |
2836d9a4 KH |
3073 | the current buffer. address is the address of the slot in the buffer |
3074 | that is current now. */ | |
078e7b4a JB |
3075 | |
3076 | void | |
4360b0c6 | 3077 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3078 | char *namestring; |
3079 | Lisp_Object *address; | |
4360b0c6 | 3080 | Lisp_Object type; |
078e7b4a JB |
3081 | char *doc; |
3082 | { | |
1a0f90f7 | 3083 | Lisp_Object sym, val; |
078e7b4a JB |
3084 | int offset; |
3085 | extern struct buffer buffer_local_symbols; | |
3086 | ||
3087 | sym = intern (namestring); | |
1a0f90f7 | 3088 | val = allocate_misc (); |
078e7b4a JB |
3089 | offset = (char *)address - (char *)current_buffer; |
3090 | ||
47e28b2c | 3091 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3092 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 3093 | XSYMBOL (sym)->value = val; |
078e7b4a | 3094 | *(Lisp_Object *)(offset + (char *)&buffer_local_symbols) = sym; |
4360b0c6 | 3095 | *(Lisp_Object *)(offset + (char *)&buffer_local_types) = type; |
2836d9a4 | 3096 | if (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)) == 0) |
078e7b4a JB |
3097 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3098 | slot of buffer_local_flags */ | |
3099 | abort (); | |
3100 | } | |
3101 | ||
3102 | #endif /* standalone */ | |
950c215d KH |
3103 | |
3104 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3105 | at a particular offset in the current kboard object. */ |
950c215d KH |
3106 | |
3107 | void | |
4ac38690 | 3108 | defvar_kboard (namestring, offset) |
950c215d KH |
3109 | char *namestring; |
3110 | int offset; | |
3111 | { | |
3112 | Lisp_Object sym, val; | |
3113 | sym = intern (namestring); | |
3114 | val = allocate_misc (); | |
47e28b2c | 3115 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3116 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
3117 | XSYMBOL (sym)->value = val; |
3118 | } | |
078e7b4a | 3119 | \f |
11938f10 KH |
3120 | /* Record the value of load-path used at the start of dumping |
3121 | so we can see if the site changed it later during dumping. */ | |
3122 | static Lisp_Object dump_path; | |
3123 | ||
d5b28a9d | 3124 | void |
279499f0 | 3125 | init_lread () |
078e7b4a | 3126 | { |
46947372 | 3127 | char *normal; |
e73997a1 | 3128 | int turn_off_warning = 0; |
078e7b4a | 3129 | |
9dff7c53 RS |
3130 | #ifdef HAVE_SETLOCALE |
3131 | /* Make sure numbers are parsed as we expect. */ | |
3132 | setlocale (LC_NUMERIC, "C"); | |
3133 | #endif /* HAVE_SETLOCALE */ | |
3134 | ||
279499f0 | 3135 | /* Compute the default load-path. */ |
46947372 JB |
3136 | #ifdef CANNOT_DUMP |
3137 | normal = PATH_LOADSEARCH; | |
e065a56e | 3138 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3139 | #else |
3140 | if (NILP (Vpurify_flag)) | |
3141 | normal = PATH_LOADSEARCH; | |
279499f0 | 3142 | else |
46947372 | 3143 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3144 | |
46947372 JB |
3145 | /* In a dumped Emacs, we normally have to reset the value of |
3146 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3147 | uses ../lisp, instead of the path of the installed elisp | |
3148 | libraries. However, if it appears that Vload_path was changed | |
3149 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3150 | if (initialized) |
3151 | { | |
4746118a | 3152 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3153 | { |
3154 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3155 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3156 | { |
74180aa4 | 3157 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
3158 | installation dir, if it exists. */ |
3159 | Lisp_Object tem, tem1; | |
74180aa4 RS |
3160 | tem = Fexpand_file_name (build_string ("lisp"), |
3161 | Vinstallation_directory); | |
3a3056e5 RS |
3162 | tem1 = Ffile_exists_p (tem); |
3163 | if (!NILP (tem1)) | |
3164 | { | |
3165 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3166 | { |
3167 | turn_off_warning = 1; | |
3168 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3169 | } | |
3a3056e5 RS |
3170 | } |
3171 | else | |
3172 | /* That dir doesn't exist, so add the build-time | |
3173 | Lisp dirs instead. */ | |
3174 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3175 | |
9fbc0116 RS |
3176 | /* Add leim under the installation dir, if it exists. */ |
3177 | tem = Fexpand_file_name (build_string ("leim"), | |
3178 | Vinstallation_directory); | |
3179 | tem1 = Ffile_exists_p (tem); | |
3180 | if (!NILP (tem1)) | |
3181 | { | |
3182 | if (NILP (Fmember (tem, Vload_path))) | |
3183 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3184 | } | |
3185 | ||
c478f98c RS |
3186 | /* Add site-list under the installation dir, if it exists. */ |
3187 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3188 | Vinstallation_directory); | |
3189 | tem1 = Ffile_exists_p (tem); | |
3190 | if (!NILP (tem1)) | |
3191 | { | |
3192 | if (NILP (Fmember (tem, Vload_path))) | |
3193 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3194 | } | |
0f337465 RS |
3195 | |
3196 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3197 | and it is run from where it was built, add to load-path |
3198 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3199 | |
3200 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3201 | { | |
33046fc9 RS |
3202 | Lisp_Object tem2; |
3203 | ||
0f337465 RS |
3204 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3205 | Vinstallation_directory); | |
3206 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3207 | |
3208 | /* Don't be fooled if they moved the entire source tree | |
3209 | AFTER dumping Emacs. If the build directory is indeed | |
3210 | different from the source dir, src/Makefile.in and | |
3211 | src/Makefile will not be found together. */ | |
3212 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3213 | Vinstallation_directory); | |
3214 | tem2 = Ffile_exists_p (tem); | |
3215 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3216 | { |
3217 | tem = Fexpand_file_name (build_string ("lisp"), | |
3218 | Vsource_directory); | |
3219 | ||
3220 | if (NILP (Fmember (tem, Vload_path))) | |
3221 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3222 | ||
9fbc0116 RS |
3223 | tem = Fexpand_file_name (build_string ("leim"), |
3224 | Vsource_directory); | |
3225 | ||
3226 | if (NILP (Fmember (tem, Vload_path))) | |
3227 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3228 | ||
0f337465 RS |
3229 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3230 | Vsource_directory); | |
3231 | ||
3232 | if (NILP (Fmember (tem, Vload_path))) | |
3233 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3234 | } | |
3235 | } | |
80667d53 RS |
3236 | } |
3237 | } | |
4746118a JB |
3238 | } |
3239 | else | |
11938f10 | 3240 | { |
7b396c6c RS |
3241 | /* NORMAL refers to the lisp dir in the source directory. */ |
3242 | /* We used to add ../lisp at the front here, but | |
3243 | that caused trouble because it was copied from dump_path | |
3244 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3245 | It should be unnecessary. */ | |
3246 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3247 | dump_path = Vload_path; |
3248 | } | |
46947372 | 3249 | #endif |
279499f0 | 3250 | |
317073d5 RS |
3251 | #ifndef WINDOWSNT |
3252 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
3253 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3254 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
3255 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
3256 | ||
078e7b4a | 3257 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3258 | if (!turn_off_warning) |
3259 | { | |
3260 | Lisp_Object path_tail; | |
078e7b4a | 3261 | |
e73997a1 RS |
3262 | for (path_tail = Vload_path; |
3263 | !NILP (path_tail); | |
3264 | path_tail = XCONS (path_tail)->cdr) | |
3265 | { | |
3266 | Lisp_Object dirfile; | |
3267 | dirfile = Fcar (path_tail); | |
3268 | if (STRINGP (dirfile)) | |
3269 | { | |
3270 | dirfile = Fdirectory_file_name (dirfile); | |
3271 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c RS |
3272 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
3273 | XCONS (path_tail)->car); | |
e73997a1 RS |
3274 | } |
3275 | } | |
3276 | } | |
317073d5 | 3277 | #endif /* WINDOWSNT */ |
46947372 JB |
3278 | |
3279 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3280 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3281 | #ifndef CANNOT_DUMP |
46947372 JB |
3282 | if (NILP (Vpurify_flag) |
3283 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3284 | #endif |
279499f0 | 3285 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3286 | |
3287 | Vvalues = Qnil; | |
3288 | ||
078e7b4a | 3289 | load_in_progress = 0; |
4e53f562 | 3290 | Vload_file_name = Qnil; |
d2c6be7f RS |
3291 | |
3292 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3293 | |
3294 | Vstandard_input = Qt; | |
078e7b4a JB |
3295 | } |
3296 | ||
85496b8c RS |
3297 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3298 | does not exist. Print it on stderr and put it in *Message*. */ | |
3299 | ||
d5b28a9d | 3300 | void |
85496b8c RS |
3301 | dir_warning (format, dirname) |
3302 | char *format; | |
3303 | Lisp_Object dirname; | |
3304 | { | |
3305 | char *buffer | |
3306 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
3307 | ||
3308 | fprintf (stderr, format, XSTRING (dirname)->data); | |
3309 | sprintf (buffer, format, XSTRING (dirname)->data); | |
9b69357e GV |
3310 | /* Don't log the warning before we've initialized!! */ |
3311 | if (initialized) | |
3312 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3313 | } |
3314 | ||
078e7b4a | 3315 | void |
279499f0 | 3316 | syms_of_lread () |
078e7b4a JB |
3317 | { |
3318 | defsubr (&Sread); | |
3319 | defsubr (&Sread_from_string); | |
3320 | defsubr (&Sintern); | |
3321 | defsubr (&Sintern_soft); | |
d007f5c8 | 3322 | defsubr (&Sunintern); |
078e7b4a | 3323 | defsubr (&Sload); |
228d4b1c | 3324 | defsubr (&Seval_buffer); |
078e7b4a JB |
3325 | defsubr (&Seval_region); |
3326 | defsubr (&Sread_char); | |
3327 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3328 | defsubr (&Sread_event); |
078e7b4a JB |
3329 | defsubr (&Sget_file_char); |
3330 | defsubr (&Smapatoms); | |
3331 | ||
3332 | DEFVAR_LISP ("obarray", &Vobarray, | |
3333 | "Symbol table for use by `intern' and `read'.\n\ | |
3334 | It is a vector whose length ought to be prime for best results.\n\ | |
3335 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
3336 | to find all the symbols in an obarray, use `mapatoms'."); | |
3337 | ||
3338 | DEFVAR_LISP ("values", &Vvalues, | |
3339 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
3340 | Order is reverse chronological."); | |
3341 | ||
3342 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
3343 | "Stream for read to get input from.\n\ | |
3344 | See documentation of `read' for possible values."); | |
3345 | Vstandard_input = Qt; | |
3346 | ||
3347 | DEFVAR_LISP ("load-path", &Vload_path, | |
3348 | "*List of directories to search for files to load.\n\ | |
3349 | Each element is a string (directory name) or nil (try default directory).\n\ | |
3350 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
57bda87a | 3351 | otherwise to default specified by file `epaths.h' when Emacs was built."); |
078e7b4a JB |
3352 | |
3353 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
3354 | "Non-nil iff inside of `load'."); | |
3355 | ||
3356 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
3357 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
3358 | Each element looks like (FILENAME FORMS...).\n\ | |
3359 | When `load' is run and the file-name argument is FILENAME,\n\ | |
3360 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
3361 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
3362 | with no directory specified, since that is how `load' is normally called.\n\ | |
3363 | An error in FORMS does not undo the load,\n\ | |
3364 | but does prevent execution of the rest of the FORMS."); | |
3365 | Vafter_load_alist = Qnil; | |
3366 | ||
ae321d28 RS |
3367 | DEFVAR_LISP ("load-history", &Vload_history, |
3368 | "Alist mapping source file names to symbols and features.\n\ | |
3369 | Each alist element is a list that starts with a file name,\n\ | |
3370 | except for one element (optional) that starts with nil and describes\n\ | |
3371 | definitions evaluated from buffers not visiting files.\n\ | |
3372 | The remaining elements of each list are symbols defined as functions\n\ | |
3373 | or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'."); | |
3374 | Vload_history = Qnil; | |
3375 | ||
20ea2964 RS |
3376 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
3377 | "Full name of file being loaded by `load'."); | |
3378 | Vload_file_name = Qnil; | |
3379 | ||
4116ab9f KH |
3380 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
3381 | "File name, including directory, of user's initialization file."); | |
3382 | Vuser_init_file = Qnil; | |
3383 | ||
8a1f1537 RS |
3384 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
3385 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
3386 | Vcurrent_load_list = Qnil; |
3387 | ||
84a15045 RS |
3388 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
3389 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
3390 | The default is nil, which means use the function `read'."); | |
3391 | Vload_read_function = Qnil; | |
3392 | ||
fe0e03f3 KH |
3393 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
3394 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
3395 | This function is for doing code conversion before reading the source file.\n\ | |
3396 | If nil, loading is done without any code conversion.\n\ | |
3397 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
3398 | FULLNAME is the full name of FILE.\n\ | |
3399 | See `load' for the meaning of the remaining arguments."); | |
3400 | Vload_source_file_function = Qnil; | |
3401 | ||
b2a30870 RS |
3402 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
3403 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
3404 | This is useful when the file being loaded is a temporary copy."); | |
3405 | load_force_doc_strings = 0; | |
3406 | ||
94e554db RS |
3407 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
3408 | "Non-nil means `load' converts strings to unibyte whenever possible.\n\ | |
3409 | This is normally used in `load-with-code-conversion'\n\ | |
3410 | for loading non-compiled files."); | |
3411 | load_convert_to_unibyte = 0; | |
3412 | ||
1521a8fa RS |
3413 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
3414 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
3415 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
3416 | Vsource_directory |
3417 | = Fexpand_file_name (build_string ("../"), | |
3418 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3419 | ||
4b104c41 RS |
3420 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
3421 | "List of files that were preloaded (when dumping Emacs)."); | |
3422 | Vpreloaded_file_list = Qnil; | |
3423 | ||
a90ba1e2 KH |
3424 | /* Vsource_directory was initialized in init_lread. */ |
3425 | ||
d2c6be7f RS |
3426 | load_descriptor_list = Qnil; |
3427 | staticpro (&load_descriptor_list); | |
3428 | ||
8a1f1537 RS |
3429 | Qcurrent_load_list = intern ("current-load-list"); |
3430 | staticpro (&Qcurrent_load_list); | |
3431 | ||
078e7b4a JB |
3432 | Qstandard_input = intern ("standard-input"); |
3433 | staticpro (&Qstandard_input); | |
3434 | ||
3435 | Qread_char = intern ("read-char"); | |
3436 | staticpro (&Qread_char); | |
3437 | ||
3438 | Qget_file_char = intern ("get-file-char"); | |
3439 | staticpro (&Qget_file_char); | |
7bd279cd | 3440 | |
17634846 RS |
3441 | Qbackquote = intern ("`"); |
3442 | staticpro (&Qbackquote); | |
3443 | Qcomma = intern (","); | |
3444 | staticpro (&Qcomma); | |
3445 | Qcomma_at = intern (",@"); | |
3446 | staticpro (&Qcomma_at); | |
3447 | Qcomma_dot = intern (",."); | |
3448 | staticpro (&Qcomma_dot); | |
3449 | ||
74549846 RS |
3450 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3451 | staticpro (&Qinhibit_file_name_operation); | |
3452 | ||
7bd279cd RS |
3453 | Qascii_character = intern ("ascii-character"); |
3454 | staticpro (&Qascii_character); | |
c2225d00 | 3455 | |
2b6cae0c RS |
3456 | Qfunction = intern ("function"); |
3457 | staticpro (&Qfunction); | |
3458 | ||
c2225d00 RS |
3459 | Qload = intern ("load"); |
3460 | staticpro (&Qload); | |
20ea2964 RS |
3461 | |
3462 | Qload_file_name = intern ("load-file-name"); | |
3463 | staticpro (&Qload_file_name); | |
11938f10 KH |
3464 | |
3465 | staticpro (&dump_path); | |
4ad679f9 EN |
3466 | |
3467 | staticpro (&read_objects); | |
3468 | read_objects = Qnil; | |
9e062b6c RS |
3469 | staticpro (&seen_list); |
3470 | ||
078e7b4a | 3471 | } |