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 | ||
1ffcc3b1 DL |
130 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
131 | Lisp_Object Vbyte_boolean_vars; | |
132 | ||
d2c6be7f RS |
133 | /* List of descriptors now open for Fload. */ |
134 | static Lisp_Object load_descriptor_list; | |
135 | ||
b2a30870 | 136 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
137 | static FILE *instream; |
138 | ||
139 | /* When nonzero, read conses in pure space */ | |
140 | static int read_pure; | |
141 | ||
b2a30870 | 142 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 143 | static int read_from_string_index; |
bed23cb2 | 144 | static int read_from_string_index_byte; |
078e7b4a | 145 | static int read_from_string_limit; |
17634846 | 146 | |
6f7f43d5 RS |
147 | /* Number of bytes left to read in the buffer character |
148 | that `readchar' has already advanced over. */ | |
149 | static int readchar_backlog; | |
150 | ||
c15cfd1f | 151 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
152 | static char *saved_doc_string; |
153 | /* Length of buffer allocated in saved_doc_string. */ | |
154 | static int saved_doc_string_size; | |
155 | /* Length of actual data in saved_doc_string. */ | |
156 | static int saved_doc_string_length; | |
157 | /* This is the file position that string came from. */ | |
158 | static int saved_doc_string_position; | |
159 | ||
c15cfd1f RS |
160 | /* This contains the previous string skipped with #@. |
161 | We copy it from saved_doc_string when a new string | |
162 | is put in saved_doc_string. */ | |
163 | static char *prev_saved_doc_string; | |
164 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
165 | static int prev_saved_doc_string_size; | |
166 | /* Length of actual data in prev_saved_doc_string. */ | |
167 | static int prev_saved_doc_string_length; | |
168 | /* This is the file position that string came from. */ | |
169 | static int prev_saved_doc_string_position; | |
170 | ||
17634846 RS |
171 | /* Nonzero means inside a new-style backquote |
172 | with no surrounding parentheses. | |
173 | Fread initializes this to zero, so we need not specbind it | |
174 | or worry about what happens to it when there is an error. */ | |
175 | static int new_backquote_flag; | |
078e7b4a JB |
176 | \f |
177 | /* Handle unreading and rereading of characters. | |
178 | Write READCHAR to read a character, | |
fe0e03f3 KH |
179 | UNREAD(c) to unread c to be read again. |
180 | ||
181 | These macros actually read/unread a byte code, multibyte characters | |
182 | are not handled here. The caller should manage them if necessary. | |
183 | */ | |
078e7b4a JB |
184 | |
185 | #define READCHAR readchar (readcharfun) | |
186 | #define UNREAD(c) unreadchar (readcharfun, c) | |
187 | ||
188 | static int | |
189 | readchar (readcharfun) | |
190 | Lisp_Object readcharfun; | |
191 | { | |
192 | Lisp_Object tem; | |
078e7b4a JB |
193 | register int c, mpos; |
194 | ||
cfff016d | 195 | if (BUFFERP (readcharfun)) |
078e7b4a | 196 | { |
bed23cb2 | 197 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 198 | |
bed23cb2 RS |
199 | int pt_byte = BUF_PT_BYTE (inbuffer); |
200 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 201 | |
00a9a935 RS |
202 | if (readchar_backlog > 0) |
203 | /* We get the address of the byte just passed, | |
204 | which is the last byte of the character. | |
205 | The other bytes in this character are consecutive with it, | |
206 | because the gap can't be in the middle of a character. */ | |
207 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
208 | - --readchar_backlog); | |
209 | ||
bed23cb2 RS |
210 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
211 | return -1; | |
078e7b4a | 212 | |
00a9a935 RS |
213 | readchar_backlog = -1; |
214 | ||
bed23cb2 RS |
215 | if (! NILP (inbuffer->enable_multibyte_characters)) |
216 | { | |
00a9a935 RS |
217 | unsigned char workbuf[4]; |
218 | unsigned char *str = workbuf; | |
219 | int length; | |
220 | ||
221 | /* Fetch the character code from the buffer. */ | |
bed23cb2 RS |
222 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
223 | BUF_INC_POS (inbuffer, pt_byte); | |
224 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
00a9a935 RS |
225 | |
226 | /* Find the byte-sequence representation of that character. */ | |
227 | if (SINGLE_BYTE_CHAR_P (c)) | |
228 | length = 1, workbuf[0] = c; | |
229 | else | |
230 | length = non_ascii_char_to_string (c, workbuf, &str); | |
231 | ||
232 | /* If the bytes for this character in the buffer | |
233 | are not identical with what the character code implies, | |
234 | read the bytes one by one from the buffer. */ | |
235 | if (length != pt_byte - orig_pt_byte | |
236 | || (length == 1 ? *str != *p : bcmp (str, p, length))) | |
237 | { | |
238 | readchar_backlog = pt_byte - orig_pt_byte; | |
239 | c = BUF_FETCH_BYTE (inbuffer, orig_pt_byte); | |
240 | readchar_backlog--; | |
241 | } | |
bed23cb2 RS |
242 | } |
243 | else | |
244 | { | |
245 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
246 | pt_byte++; | |
6f7f43d5 | 247 | } |
bed23cb2 | 248 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 249 | |
bed23cb2 | 250 | return c; |
078e7b4a | 251 | } |
cfff016d | 252 | if (MARKERP (readcharfun)) |
078e7b4a | 253 | { |
bed23cb2 | 254 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 255 | |
bed23cb2 RS |
256 | int bytepos = marker_byte_position (readcharfun); |
257 | int orig_bytepos = bytepos; | |
6f7f43d5 | 258 | |
00a9a935 RS |
259 | if (readchar_backlog > 0) |
260 | /* We get the address of the byte just passed, | |
261 | which is the last byte of the character. | |
262 | The other bytes in this character are consecutive with it, | |
263 | because the gap can't be in the middle of a character. */ | |
264 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
265 | - --readchar_backlog); | |
266 | ||
bed23cb2 RS |
267 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
268 | return -1; | |
6f7f43d5 | 269 | |
00a9a935 RS |
270 | readchar_backlog = -1; |
271 | ||
bed23cb2 RS |
272 | if (! NILP (inbuffer->enable_multibyte_characters)) |
273 | { | |
00a9a935 RS |
274 | unsigned char workbuf[4]; |
275 | unsigned char *str = workbuf; | |
276 | int length; | |
277 | ||
278 | /* Fetch the character code from the buffer. */ | |
bed23cb2 RS |
279 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
280 | BUF_INC_POS (inbuffer, bytepos); | |
281 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
00a9a935 RS |
282 | |
283 | /* Find the byte-sequence representation of that character. */ | |
284 | if (SINGLE_BYTE_CHAR_P (c)) | |
285 | length = 1, workbuf[0] = c; | |
286 | else | |
287 | length = non_ascii_char_to_string (c, workbuf, &str); | |
288 | ||
289 | /* If the bytes for this character in the buffer | |
290 | are not identical with what the character code implies, | |
291 | read the bytes one by one from the buffer. */ | |
292 | if (length != bytepos - orig_bytepos | |
293 | || (length == 1 ? *str != *p : bcmp (str, p, length))) | |
294 | { | |
295 | readchar_backlog = bytepos - orig_bytepos; | |
296 | c = BUF_FETCH_BYTE (inbuffer, orig_bytepos); | |
297 | readchar_backlog--; | |
298 | } | |
bed23cb2 RS |
299 | } |
300 | else | |
301 | { | |
302 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
303 | bytepos++; | |
6f7f43d5 RS |
304 | } |
305 | ||
bed23cb2 RS |
306 | XMARKER (readcharfun)->bytepos = bytepos; |
307 | XMARKER (readcharfun)->charpos++; | |
308 | ||
309 | return c; | |
078e7b4a | 310 | } |
ad0153e4 RS |
311 | |
312 | if (EQ (readcharfun, Qlambda)) | |
313 | return read_bytecode_char (0); | |
314 | ||
078e7b4a | 315 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
316 | { |
317 | c = getc (instream); | |
318 | #ifdef EINTR | |
319 | /* Interrupted reads have been observed while reading over the network */ | |
320 | while (c == EOF && ferror (instream) && errno == EINTR) | |
321 | { | |
322 | clearerr (instream); | |
323 | c = getc (instream); | |
324 | } | |
325 | #endif | |
326 | return c; | |
327 | } | |
078e7b4a | 328 | |
cfff016d | 329 | if (STRINGP (readcharfun)) |
078e7b4a | 330 | { |
bed23cb2 | 331 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 332 | c = -1; |
bed23cb2 RS |
333 | else if (STRING_MULTIBYTE (readcharfun)) |
334 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, | |
335 | read_from_string_index, | |
336 | read_from_string_index_byte); | |
337 | else | |
338 | c = XSTRING (readcharfun)->data[read_from_string_index++]; | |
6f7f43d5 | 339 | |
078e7b4a JB |
340 | return c; |
341 | } | |
342 | ||
343 | tem = call0 (readcharfun); | |
344 | ||
265a9e55 | 345 | if (NILP (tem)) |
078e7b4a JB |
346 | return -1; |
347 | return XINT (tem); | |
348 | } | |
349 | ||
350 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
351 | If the stream is a user function, call it with the char as argument. */ | |
352 | ||
353 | static void | |
354 | unreadchar (readcharfun, c) | |
355 | Lisp_Object readcharfun; | |
356 | int c; | |
357 | { | |
92fddec9 KH |
358 | if (c == -1) |
359 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
360 | since readchar didn't advance it when we read it. */ | |
361 | ; | |
cfff016d | 362 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 363 | { |
bed23cb2 RS |
364 | struct buffer *b = XBUFFER (readcharfun); |
365 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 366 | |
00a9a935 RS |
367 | if (readchar_backlog >= 0) |
368 | readchar_backlog++; | |
bed23cb2 | 369 | else |
00a9a935 RS |
370 | { |
371 | BUF_PT (b)--; | |
372 | if (! NILP (b->enable_multibyte_characters)) | |
373 | BUF_DEC_POS (b, bytepos); | |
374 | else | |
375 | bytepos--; | |
d7760ca9 | 376 | |
00a9a935 RS |
377 | BUF_PT_BYTE (b) = bytepos; |
378 | } | |
d7760ca9 | 379 | } |
cfff016d | 380 | else if (MARKERP (readcharfun)) |
d7760ca9 | 381 | { |
bed23cb2 RS |
382 | struct buffer *b = XMARKER (readcharfun)->buffer; |
383 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 384 | |
00a9a935 RS |
385 | if (readchar_backlog >= 0) |
386 | readchar_backlog++; | |
bed23cb2 | 387 | else |
00a9a935 RS |
388 | { |
389 | XMARKER (readcharfun)->charpos--; | |
390 | if (! NILP (b->enable_multibyte_characters)) | |
391 | BUF_DEC_POS (b, bytepos); | |
392 | else | |
393 | bytepos--; | |
d7760ca9 | 394 | |
00a9a935 RS |
395 | XMARKER (readcharfun)->bytepos = bytepos; |
396 | } | |
d7760ca9 | 397 | } |
cfff016d | 398 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
399 | { |
400 | read_from_string_index--; | |
401 | read_from_string_index_byte | |
402 | = string_char_to_byte (readcharfun, read_from_string_index); | |
403 | } | |
ad0153e4 RS |
404 | else if (EQ (readcharfun, Qlambda)) |
405 | read_bytecode_char (1); | |
078e7b4a JB |
406 | else if (EQ (readcharfun, Qget_file_char)) |
407 | ungetc (c, instream); | |
408 | else | |
409 | call1 (readcharfun, make_number (c)); | |
410 | } | |
411 | ||
412 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 413 | static int read_multibyte (); |
9e062b6c RS |
414 | static Lisp_Object substitute_object_recurse (); |
415 | static void substitute_object_in_subtree (), substitute_in_interval (); | |
416 | ||
078e7b4a | 417 | \f |
bed23cb2 | 418 | /* Get a character from the tty. */ |
078e7b4a | 419 | |
3d9b22be JB |
420 | extern Lisp_Object read_char (); |
421 | ||
f42be754 JB |
422 | /* Read input events until we get one that's acceptable for our purposes. |
423 | ||
424 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
425 | until we get a character we like, and then stuffed into | |
426 | unread_switch_frame. | |
427 | ||
428 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
429 | if the unmodified version of the symbol has a Qascii_character | |
430 | property, and use that character, if present. | |
431 | ||
432 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
433 | get isn't an ASCII character with modifiers. If it's zero but | |
434 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
435 | character. |
436 | ||
437 | If INPUT_METHOD is nonzero, we invoke the current input method | |
438 | if the character warrants that. */ | |
cc39bc38 | 439 | |
f42be754 | 440 | Lisp_Object |
bb49a192 RS |
441 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
442 | input_method) | |
443 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 JB |
444 | { |
445 | #ifdef standalone | |
446 | return make_number (getchar ()); | |
447 | #else | |
153a17b7 KH |
448 | register Lisp_Object val, delayed_switch_frame; |
449 | ||
450 | delayed_switch_frame = Qnil; | |
f42be754 JB |
451 | |
452 | /* Read until we get an acceptable event. */ | |
453 | retry: | |
bb49a192 RS |
454 | val = read_char (0, 0, 0, |
455 | (input_method ? Qnil : Qt), | |
456 | 0); | |
f42be754 | 457 | |
cfff016d | 458 | if (BUFFERP (val)) |
6c82d689 KH |
459 | goto retry; |
460 | ||
f42be754 | 461 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 462 | character. This is better than signaling an error just because |
f42be754 JB |
463 | the last characters were typed to a separate minibuffer frame, |
464 | for example. Eventually, some code which can deal with | |
465 | switch-frame events will read it and process it. */ | |
466 | if (no_switch_frame | |
467 | && EVENT_HAS_PARAMETERS (val) | |
468 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
469 | { | |
470 | delayed_switch_frame = val; | |
471 | goto retry; | |
472 | } | |
473 | ||
474 | if (ascii_required) | |
475 | { | |
476 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 477 | if (SYMBOLP (val)) |
f42be754 JB |
478 | { |
479 | Lisp_Object tem, tem1, tem2; | |
480 | tem = Fget (val, Qevent_symbol_element_mask); | |
481 | if (!NILP (tem)) | |
482 | { | |
483 | tem1 = Fget (Fcar (tem), Qascii_character); | |
484 | /* Merge this symbol's modifier bits | |
485 | with the ASCII equivalent of its basic code. */ | |
486 | if (!NILP (tem1)) | |
baf69866 | 487 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
488 | } |
489 | } | |
490 | ||
491 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 492 | if (!INTEGERP (val)) |
f42be754 JB |
493 | { |
494 | if (error_nonascii) | |
495 | { | |
1ec84625 | 496 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
497 | error ("Non-character input-event"); |
498 | } | |
499 | else | |
500 | goto retry; | |
501 | } | |
502 | } | |
503 | ||
504 | if (! NILP (delayed_switch_frame)) | |
505 | unread_switch_frame = delayed_switch_frame; | |
506 | ||
507 | return val; | |
508 | #endif | |
509 | } | |
510 | ||
bb49a192 | 511 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
078e7b4a | 512 | "Read a character from the command input (keyboard or macro).\n\ |
e51e47f7 JB |
513 | It is returned as a number.\n\ |
514 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
515 | click or function key event), `read-char' signals an error. As an\n\ |
516 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
517 | be read.\n\ | |
518 | If you want to read non-character events, or ignore them, call\n\ | |
bb49a192 RS |
519 | `read-event' or `read-char-exclusive' instead.\n\ |
520 | \n\ | |
521 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
522 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
523 | input method is turned on in the current buffer, that input method\n\ | |
524 | is used for reading a character.") | |
525 | (prompt, inherit_input_method) | |
526 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 527 | { |
bb49a192 RS |
528 | if (! NILP (prompt)) |
529 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 530 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
531 | } |
532 | ||
bb49a192 RS |
533 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
534 | "Read an event object from the input stream.\n\ | |
535 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
536 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
537 | input method is turned on in the current buffer, that input method\n\ | |
538 | is used for reading a character.") | |
539 | (prompt, inherit_input_method) | |
540 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 541 | { |
bb49a192 RS |
542 | if (! NILP (prompt)) |
543 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 544 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
545 | } |
546 | ||
bb49a192 | 547 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
078e7b4a | 548 | "Read a character from the command input (keyboard or macro).\n\ |
bb49a192 RS |
549 | It is returned as a number. Non-character events are ignored.\n\ |
550 | \n\ | |
551 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
552 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
553 | input method is turned on in the current buffer, that input method\n\ | |
554 | is used for reading a character.") | |
555 | (prompt, inherit_input_method) | |
556 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 557 | { |
bb49a192 RS |
558 | if (! NILP (prompt)) |
559 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 560 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 561 | } |
078e7b4a JB |
562 | |
563 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
564 | "Don't use this yourself.") | |
565 | () | |
566 | { | |
567 | register Lisp_Object val; | |
1805de4f | 568 | XSETINT (val, getc (instream)); |
078e7b4a JB |
569 | return val; |
570 | } | |
571 | \f | |
572 | static void readevalloop (); | |
573 | static Lisp_Object load_unwind (); | |
d2c6be7f | 574 | static Lisp_Object load_descriptor_unwind (); |
078e7b4a | 575 | |
f0a50954 | 576 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
577 | "Execute a file of Lisp code named FILE.\n\ |
578 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
579 | then try FILE unmodified.\n\ | |
580 | This function searches the directories in `load-path'.\n\ | |
581 | If optional second arg NOERROR is non-nil,\n\ | |
582 | report no error if FILE doesn't exist.\n\ | |
583 | Print messages at start and end of loading unless\n\ | |
584 | optional third arg NOMESSAGE is non-nil.\n\ | |
585 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
586 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 587 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 588 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 589 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 590 | Return t if file exists.") |
f0a50954 RS |
591 | (file, noerror, nomessage, nosuffix, must_suffix) |
592 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
593 | { |
594 | register FILE *stream; | |
595 | register int fd = -1; | |
596 | register Lisp_Object lispstream; | |
078e7b4a JB |
597 | int count = specpdl_ptr - specpdl; |
598 | Lisp_Object temp; | |
599 | struct gcpro gcpro1; | |
600 | Lisp_Object found; | |
04fc68e7 RS |
601 | /* 1 means we printed the ".el is newer" message. */ |
602 | int newer = 0; | |
603 | /* 1 means we are loading a compiled file. */ | |
604 | int compiled = 0; | |
c2225d00 | 605 | Lisp_Object handler; |
229ba775 | 606 | char *fmode = "r"; |
317073d5 | 607 | #ifdef DOS_NT |
229ba775 | 608 | fmode = "rt"; |
317073d5 | 609 | #endif /* DOS_NT */ |
078e7b4a | 610 | |
0745dce9 | 611 | CHECK_STRING (file, 0); |
078e7b4a | 612 | |
c2225d00 | 613 | /* If file name is magic, call the handler. */ |
0745dce9 | 614 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 615 | if (!NILP (handler)) |
0745dce9 | 616 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 617 | |
07a0bda3 RS |
618 | /* Do this after the handler to avoid |
619 | the need to gcpro noerror, nomessage and nosuffix. | |
620 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 621 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 622 | |
078e7b4a JB |
623 | /* Avoid weird lossage with null string as arg, |
624 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 625 | if (XSTRING (file)->size > 0) |
078e7b4a | 626 | { |
211f7dcd RS |
627 | int size = XSTRING (file)->size; |
628 | ||
0745dce9 | 629 | GCPRO1 (file); |
211f7dcd RS |
630 | |
631 | if (! NILP (must_suffix)) | |
632 | { | |
633 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
634 | if (size > 3 | |
635 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
636 | must_suffix = Qnil; | |
637 | else if (size > 4 | |
638 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
639 | must_suffix = Qnil; | |
640 | /* Don't insist on adding a suffix | |
641 | if the argument includes a directory name. */ | |
642 | else if (! NILP (Ffile_name_directory (file))) | |
643 | must_suffix = Qnil; | |
644 | } | |
645 | ||
f0a50954 RS |
646 | fd = openp (Vload_path, file, |
647 | (!NILP (nosuffix) ? "" | |
648 | : ! NILP (must_suffix) ? ".elc:.el" | |
649 | : ".elc:.el:"), | |
078e7b4a | 650 | &found, 0); |
5a6e5452 | 651 | UNGCPRO; |
078e7b4a JB |
652 | } |
653 | ||
654 | if (fd < 0) | |
655 | { | |
265a9e55 | 656 | if (NILP (noerror)) |
078e7b4a JB |
657 | while (1) |
658 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 659 | Fcons (file, Qnil))); |
078e7b4a JB |
660 | else |
661 | return Qnil; | |
662 | } | |
663 | ||
4116ab9f KH |
664 | if (EQ (Qt, Vuser_init_file)) |
665 | Vuser_init_file = found; | |
666 | ||
5e24a1f7 | 667 | /* If FD is 0, that means openp found a magic file. */ |
74549846 RS |
668 | if (fd == 0) |
669 | { | |
5e24a1f7 KH |
670 | if (NILP (Fequal (found, file))) |
671 | /* If FOUND is a different file name from FILE, | |
672 | find its handler even if we have already inhibited | |
673 | the `load' operation on FILE. */ | |
674 | handler = Ffind_file_name_handler (found, Qt); | |
675 | else | |
676 | handler = Ffind_file_name_handler (found, Qload); | |
677 | if (! NILP (handler)) | |
678 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
679 | } |
680 | ||
5e24a1f7 KH |
681 | /* Load .elc files directly, but not when they are |
682 | remote and have no handler! */ | |
078e7b4a | 683 | if (!bcmp (&(XSTRING (found)->data[XSTRING (found)->size - 4]), |
5e24a1f7 KH |
684 | ".elc", 4) |
685 | && fd != 0) | |
078e7b4a JB |
686 | { |
687 | struct stat s1, s2; | |
688 | int result; | |
689 | ||
04fc68e7 RS |
690 | compiled = 1; |
691 | ||
317073d5 | 692 | #ifdef DOS_NT |
229ba775 | 693 | fmode = "rb"; |
317073d5 | 694 | #endif /* DOS_NT */ |
4ff37b08 | 695 | stat ((char *)XSTRING (found)->data, &s1); |
078e7b4a | 696 | XSTRING (found)->data[XSTRING (found)->size - 1] = 0; |
4ff37b08 | 697 | result = stat ((char *)XSTRING (found)->data, &s2); |
078e7b4a | 698 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
51ac6f83 | 699 | { |
04fc68e7 RS |
700 | /* Make the progress messages mention that source is newer. */ |
701 | newer = 1; | |
702 | ||
703 | /* If we won't print another message, mention this anyway. */ | |
704 | if (! NILP (nomessage)) | |
e28552a4 RS |
705 | message_with_string ("Source file `%s' newer than byte-compiled file", |
706 | found, 1); | |
51ac6f83 | 707 | } |
078e7b4a JB |
708 | XSTRING (found)->data[XSTRING (found)->size - 1] = 'c'; |
709 | } | |
fe0e03f3 KH |
710 | else |
711 | { | |
712 | /* We are loading a source file (*.el). */ | |
713 | if (!NILP (Vload_source_file_function)) | |
714 | { | |
5e24a1f7 KH |
715 | if (fd != 0) |
716 | close (fd); | |
7075e5a5 | 717 | return call4 (Vload_source_file_function, found, file, |
fe0e03f3 KH |
718 | NILP (noerror) ? Qnil : Qt, |
719 | NILP (nomessage) ? Qnil : Qt); | |
720 | } | |
721 | } | |
078e7b4a | 722 | |
229ba775 | 723 | #ifdef WINDOWSNT |
23a71bd6 | 724 | close (fd); |
229ba775 EZ |
725 | stream = fopen ((char *) XSTRING (found)->data, fmode); |
726 | #else /* not WINDOWSNT */ | |
727 | stream = fdopen (fd, fmode); | |
728 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
729 | if (stream == 0) |
730 | { | |
731 | close (fd); | |
0745dce9 | 732 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
733 | } |
734 | ||
4b104c41 RS |
735 | if (! NILP (Vpurify_flag)) |
736 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
737 | ||
04fc68e7 RS |
738 | if (NILP (nomessage)) |
739 | { | |
db5cae4b | 740 | if (!compiled) |
e28552a4 | 741 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 742 | else if (newer) |
e28552a4 RS |
743 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
744 | file, 1); | |
db5cae4b | 745 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 746 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 747 | } |
078e7b4a | 748 | |
0745dce9 | 749 | GCPRO1 (file); |
838abf56 KH |
750 | lispstream = Fcons (Qnil, Qnil); |
751 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
752 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 753 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 754 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 755 | specbind (Qload_file_name, found); |
74549846 | 756 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
757 | load_descriptor_list |
758 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 759 | load_in_progress++; |
976350af | 760 | readevalloop (Qget_file_char, stream, file, Feval, 0, Qnil, Qnil); |
078e7b4a JB |
761 | unbind_to (count, Qnil); |
762 | ||
763 | /* Run any load-hooks for this file. */ | |
0745dce9 | 764 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 765 | if (!NILP (temp)) |
078e7b4a JB |
766 | Fprogn (Fcdr (temp)); |
767 | UNGCPRO; | |
768 | ||
b2a30870 RS |
769 | if (saved_doc_string) |
770 | free (saved_doc_string); | |
771 | saved_doc_string = 0; | |
772 | saved_doc_string_size = 0; | |
773 | ||
c15cfd1f RS |
774 | if (prev_saved_doc_string) |
775 | free (prev_saved_doc_string); | |
776 | prev_saved_doc_string = 0; | |
777 | prev_saved_doc_string_size = 0; | |
778 | ||
265a9e55 | 779 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 780 | { |
db5cae4b | 781 | if (!compiled) |
e28552a4 | 782 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 783 | else if (newer) |
e28552a4 RS |
784 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
785 | file, 1); | |
db5cae4b | 786 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 787 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 788 | } |
078e7b4a JB |
789 | return Qt; |
790 | } | |
791 | ||
792 | static Lisp_Object | |
793 | load_unwind (stream) /* used as unwind-protect function in load */ | |
794 | Lisp_Object stream; | |
795 | { | |
c8bdaa8c RS |
796 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 |
797 | | XFASTINT (XCONS (stream)->cdr))); | |
078e7b4a JB |
798 | if (--load_in_progress < 0) load_in_progress = 0; |
799 | return Qnil; | |
800 | } | |
801 | ||
d2c6be7f RS |
802 | static Lisp_Object |
803 | load_descriptor_unwind (oldlist) | |
804 | Lisp_Object oldlist; | |
805 | { | |
806 | load_descriptor_list = oldlist; | |
838abf56 | 807 | return Qnil; |
d2c6be7f RS |
808 | } |
809 | ||
810 | /* Close all descriptors in use for Floads. | |
811 | This is used when starting a subprocess. */ | |
812 | ||
813 | void | |
814 | close_load_descs () | |
815 | { | |
f3849f25 | 816 | #ifndef WINDOWSNT |
d2c6be7f RS |
817 | Lisp_Object tail; |
818 | for (tail = load_descriptor_list; !NILP (tail); tail = XCONS (tail)->cdr) | |
819 | close (XFASTINT (XCONS (tail)->car)); | |
f3849f25 | 820 | #endif |
d2c6be7f | 821 | } |
078e7b4a JB |
822 | \f |
823 | static int | |
824 | complete_filename_p (pathname) | |
825 | Lisp_Object pathname; | |
826 | { | |
827 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
828 | return (IS_DIRECTORY_SEP (s[0]) |
829 | || (XSTRING (pathname)->size > 2 | |
830 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
831 | #ifdef ALTOS |
832 | || *s == '@' | |
833 | #endif | |
834 | #ifdef VMS | |
835 | || index (s, ':') | |
836 | #endif /* VMS */ | |
837 | ); | |
838 | } | |
839 | ||
840 | /* Search for a file whose name is STR, looking in directories | |
841 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
842 | SUFFIX is a string containing possible suffixes separated by colons. | |
843 | On success, returns a file descriptor. On failure, returns -1. | |
844 | ||
845 | EXEC_ONLY nonzero means don't open the files, | |
846 | just look for one that is executable. In this case, | |
847 | returns 1 on success. | |
848 | ||
849 | If STOREPTR is nonzero, it points to a slot where the name of | |
850 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
851 | nil is stored there on failure. |
852 | ||
853 | If the file we find is remote, return 0 | |
854 | but store the found remote file name in *STOREPTR. | |
855 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
856 | |
857 | int | |
858 | openp (path, str, suffix, storeptr, exec_only) | |
859 | Lisp_Object path, str; | |
860 | char *suffix; | |
861 | Lisp_Object *storeptr; | |
862 | int exec_only; | |
863 | { | |
864 | register int fd; | |
865 | int fn_size = 100; | |
866 | char buf[100]; | |
867 | register char *fn = buf; | |
868 | int absolute = 0; | |
869 | int want_size; | |
74549846 | 870 | Lisp_Object filename; |
078e7b4a | 871 | struct stat st; |
5a6e5452 | 872 | struct gcpro gcpro1; |
078e7b4a | 873 | |
5a6e5452 | 874 | GCPRO1 (str); |
078e7b4a JB |
875 | if (storeptr) |
876 | *storeptr = Qnil; | |
877 | ||
878 | if (complete_filename_p (str)) | |
879 | absolute = 1; | |
880 | ||
265a9e55 | 881 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
882 | { |
883 | char *nsuffix; | |
884 | ||
885 | filename = Fexpand_file_name (str, Fcar (path)); | |
886 | if (!complete_filename_p (filename)) | |
887 | /* If there are non-absolute elts in PATH (eg ".") */ | |
888 | /* Of course, this could conceivably lose if luser sets | |
889 | default-directory to be something non-absolute... */ | |
890 | { | |
891 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
892 | if (!complete_filename_p (filename)) | |
893 | /* Give up on this path element! */ | |
894 | continue; | |
895 | } | |
896 | ||
897 | /* Calculate maximum size of any filename made from | |
898 | this path element/specified file name and any possible suffix. */ | |
899 | want_size = strlen (suffix) + XSTRING (filename)->size + 1; | |
900 | if (fn_size < want_size) | |
901 | fn = (char *) alloca (fn_size = 100 + want_size); | |
902 | ||
903 | nsuffix = suffix; | |
904 | ||
905 | /* Loop over suffixes. */ | |
906 | while (1) | |
907 | { | |
908 | char *esuffix = (char *) index (nsuffix, ':'); | |
909 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 910 | Lisp_Object handler; |
078e7b4a | 911 | |
c49afcd7 RS |
912 | /* Concatenate path element/specified name with the suffix. |
913 | If the directory starts with /:, remove that. */ | |
914 | if (XSTRING (filename)->size > 2 | |
915 | && XSTRING (filename)->data[0] == '/' | |
916 | && XSTRING (filename)->data[1] == ':') | |
917 | { | |
918 | strncpy (fn, XSTRING (filename)->data + 2, | |
919 | XSTRING (filename)->size - 2); | |
920 | fn[XSTRING (filename)->size - 2] = 0; | |
921 | } | |
922 | else | |
923 | { | |
924 | strncpy (fn, XSTRING (filename)->data, XSTRING (filename)->size); | |
925 | fn[XSTRING (filename)->size] = 0; | |
926 | } | |
927 | ||
078e7b4a JB |
928 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
929 | strncat (fn, nsuffix, lsuffix); | |
930 | ||
74549846 RS |
931 | /* Check that the file exists and is not a directory. */ |
932 | if (absolute) | |
933 | handler = Qnil; | |
934 | else | |
935 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
936 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 937 | { |
74549846 RS |
938 | Lisp_Object string; |
939 | int exists; | |
078e7b4a | 940 | |
74549846 RS |
941 | string = build_string (fn); |
942 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
943 | : Ffile_readable_p (string)); | |
944 | if (exists | |
945 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
946 | exists = 0; | |
947 | ||
948 | if (exists) | |
078e7b4a JB |
949 | { |
950 | /* We succeeded; return this descriptor and filename. */ | |
951 | if (storeptr) | |
952 | *storeptr = build_string (fn); | |
5ef2a3c0 | 953 | UNGCPRO; |
74549846 RS |
954 | return 0; |
955 | } | |
956 | } | |
957 | else | |
958 | { | |
959 | int exists = (stat (fn, &st) >= 0 | |
960 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
961 | if (exists) | |
962 | { | |
963 | /* Check that we can access or open it. */ | |
964 | if (exec_only) | |
965 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
966 | else | |
967 | fd = open (fn, O_RDONLY, 0); | |
968 | ||
969 | if (fd >= 0) | |
970 | { | |
971 | /* We succeeded; return this descriptor and filename. */ | |
972 | if (storeptr) | |
973 | *storeptr = build_string (fn); | |
974 | UNGCPRO; | |
975 | return fd; | |
976 | } | |
078e7b4a JB |
977 | } |
978 | } | |
979 | ||
980 | /* Advance to next suffix. */ | |
981 | if (esuffix == 0) | |
982 | break; | |
983 | nsuffix += lsuffix + 1; | |
984 | } | |
5a6e5452 | 985 | if (absolute) |
5ef2a3c0 | 986 | break; |
078e7b4a JB |
987 | } |
988 | ||
5ef2a3c0 KH |
989 | UNGCPRO; |
990 | return -1; | |
078e7b4a JB |
991 | } |
992 | ||
993 | \f | |
ae321d28 RS |
994 | /* Merge the list we've accumulated of globals from the current input source |
995 | into the load_history variable. The details depend on whether | |
996 | the source has an associated file name or not. */ | |
997 | ||
998 | static void | |
999 | build_load_history (stream, source) | |
1000 | FILE *stream; | |
1001 | Lisp_Object source; | |
1002 | { | |
1003 | register Lisp_Object tail, prev, newelt; | |
1004 | register Lisp_Object tem, tem2; | |
1005 | register int foundit, loading; | |
1006 | ||
1007 | loading = stream || !NARROWED; | |
1008 | ||
1009 | tail = Vload_history; | |
1010 | prev = Qnil; | |
1011 | foundit = 0; | |
1012 | while (!NILP (tail)) | |
1013 | { | |
1014 | tem = Fcar (tail); | |
1015 | ||
1016 | /* Find the feature's previous assoc list... */ | |
1017 | if (!NILP (Fequal (source, Fcar (tem)))) | |
1018 | { | |
1019 | foundit = 1; | |
1020 | ||
1021 | /* If we're loading, remove it. */ | |
1022 | if (loading) | |
1023 | { | |
1024 | if (NILP (prev)) | |
1025 | Vload_history = Fcdr (tail); | |
1026 | else | |
1027 | Fsetcdr (prev, Fcdr (tail)); | |
1028 | } | |
1029 | ||
1030 | /* Otherwise, cons on new symbols that are not already members. */ | |
1031 | else | |
1032 | { | |
1033 | tem2 = Vcurrent_load_list; | |
1034 | ||
1035 | while (CONSP (tem2)) | |
1036 | { | |
1037 | newelt = Fcar (tem2); | |
1038 | ||
1039 | if (NILP (Fmemq (newelt, tem))) | |
1040 | Fsetcar (tail, Fcons (Fcar (tem), | |
1041 | Fcons (newelt, Fcdr (tem)))); | |
1042 | ||
1043 | tem2 = Fcdr (tem2); | |
1044 | QUIT; | |
1045 | } | |
1046 | } | |
1047 | } | |
1048 | else | |
1049 | prev = tail; | |
1050 | tail = Fcdr (tail); | |
1051 | QUIT; | |
1052 | } | |
1053 | ||
8a1f1537 RS |
1054 | /* If we're loading, cons the new assoc onto the front of load-history, |
1055 | the most-recently-loaded position. Also do this if we didn't find | |
1056 | an existing member for the current source. */ | |
1057 | if (loading || !foundit) | |
1058 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
1059 | Vload_history); | |
ae321d28 RS |
1060 | } |
1061 | ||
078e7b4a JB |
1062 | Lisp_Object |
1063 | unreadpure () /* Used as unwind-protect function in readevalloop */ | |
1064 | { | |
1065 | read_pure = 0; | |
1066 | return Qnil; | |
1067 | } | |
1068 | ||
94e554db RS |
1069 | static Lisp_Object |
1070 | readevalloop_1 (old) | |
1071 | Lisp_Object old; | |
1072 | { | |
1073 | load_convert_to_unibyte = ! NILP (old); | |
1074 | return Qnil; | |
1075 | } | |
1076 | ||
1077 | /* UNIBYTE specifies how to set load_convert_to_unibyte | |
976350af RS |
1078 | for this invocation. |
1079 | READFUN, if non-nil, is used instead of `read'. */ | |
94e554db | 1080 | |
078e7b4a | 1081 | static void |
976350af | 1082 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag, unibyte, readfun) |
078e7b4a | 1083 | Lisp_Object readcharfun; |
ae321d28 RS |
1084 | FILE *stream; |
1085 | Lisp_Object sourcename; | |
078e7b4a JB |
1086 | Lisp_Object (*evalfun) (); |
1087 | int printflag; | |
976350af | 1088 | Lisp_Object unibyte, readfun; |
078e7b4a JB |
1089 | { |
1090 | register int c; | |
1091 | register Lisp_Object val; | |
1092 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 1093 | struct gcpro gcpro1; |
49cf7ff4 RS |
1094 | struct buffer *b = 0; |
1095 | ||
1096 | if (BUFFERP (readcharfun)) | |
1097 | b = XBUFFER (readcharfun); | |
1098 | else if (MARKERP (readcharfun)) | |
1099 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
1100 | |
1101 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 1102 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1103 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1104 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1105 | |
00a9a935 | 1106 | readchar_backlog = -1; |
6f7f43d5 | 1107 | |
8a1f1537 | 1108 | GCPRO1 (sourcename); |
ae321d28 | 1109 | |
ae321d28 RS |
1110 | LOADHIST_ATTACH (sourcename); |
1111 | ||
078e7b4a JB |
1112 | while (1) |
1113 | { | |
49cf7ff4 RS |
1114 | if (b != 0 && NILP (b->name)) |
1115 | error ("Reading from killed buffer"); | |
1116 | ||
078e7b4a JB |
1117 | instream = stream; |
1118 | c = READCHAR; | |
1119 | if (c == ';') | |
1120 | { | |
1121 | while ((c = READCHAR) != '\n' && c != -1); | |
1122 | continue; | |
1123 | } | |
1124 | if (c < 0) break; | |
6069d957 RS |
1125 | |
1126 | /* Ignore whitespace here, so we can detect eof. */ | |
1127 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
1128 | continue; | |
078e7b4a | 1129 | |
265a9e55 | 1130 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1131 | { |
0e326373 | 1132 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
1133 | record_unwind_protect (unreadpure, Qnil); |
1134 | val = read_list (-1, readcharfun); | |
0e326373 | 1135 | unbind_to (count1, Qnil); |
078e7b4a JB |
1136 | } |
1137 | else | |
1138 | { | |
1139 | UNREAD (c); | |
4ad679f9 | 1140 | read_objects = Qnil; |
976350af RS |
1141 | if (! NILP (readfun)) |
1142 | val = call1 (readfun, readcharfun); | |
1143 | else if (! NILP (Vload_read_function)) | |
84a15045 | 1144 | val = call1 (Vload_read_function, readcharfun); |
976350af RS |
1145 | else |
1146 | val = read0 (readcharfun); | |
078e7b4a JB |
1147 | } |
1148 | ||
1149 | val = (*evalfun) (val); | |
1150 | if (printflag) | |
1151 | { | |
1152 | Vvalues = Fcons (val, Vvalues); | |
1153 | if (EQ (Vstandard_output, Qt)) | |
1154 | Fprin1 (val, Qnil); | |
1155 | else | |
1156 | Fprint (val, Qnil); | |
1157 | } | |
1158 | } | |
1159 | ||
ae321d28 | 1160 | build_load_history (stream, sourcename); |
ae321d28 RS |
1161 | UNGCPRO; |
1162 | ||
078e7b4a JB |
1163 | unbind_to (count, Qnil); |
1164 | } | |
1165 | ||
1166 | #ifndef standalone | |
1167 | ||
1076254d | 1168 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
94b304d7 RS |
1169 | "Execute the current buffer as Lisp code.\n\ |
1170 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
1171 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
1172 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
1173 | nil means discard it; anything else is stream for print.\n\ |
1174 | \n\ | |
13febd85 RS |
1175 | If the optional third argument FILENAME is non-nil,\n\ |
1176 | it specifies the file name to use for `load-history'.\n\ | |
1076254d RS |
1177 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'\n\ |
1178 | for this invocation.\n\ | |
1179 | \n\ | |
1180 | The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that\n\ | |
1181 | `print' and related functions should work normally even if PRINTFLAG is nil.\n\ | |
13febd85 | 1182 | \n\ |
d331bcad | 1183 | This function preserves the position of point.") |
1076254d RS |
1184 | (buffer, printflag, filename, unibyte, do_allow_print) |
1185 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; | |
228d4b1c JA |
1186 | { |
1187 | int count = specpdl_ptr - specpdl; | |
1188 | Lisp_Object tem, buf; | |
1189 | ||
9391b698 | 1190 | if (NILP (buffer)) |
228d4b1c JA |
1191 | buf = Fcurrent_buffer (); |
1192 | else | |
9391b698 | 1193 | buf = Fget_buffer (buffer); |
dfdb645c | 1194 | if (NILP (buf)) |
13febd85 | 1195 | error ("No such buffer"); |
228d4b1c | 1196 | |
1076254d | 1197 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1198 | tem = Qsymbolp; |
1199 | else | |
1200 | tem = printflag; | |
13febd85 RS |
1201 | |
1202 | if (NILP (filename)) | |
1203 | filename = XBUFFER (buf)->filename; | |
1204 | ||
228d4b1c JA |
1205 | specbind (Qstandard_output, tem); |
1206 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1207 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
976350af | 1208 | readevalloop (buf, 0, filename, Feval, !NILP (printflag), unibyte, Qnil); |
cb09ab7a | 1209 | unbind_to (count, Qnil); |
228d4b1c JA |
1210 | |
1211 | return Qnil; | |
1212 | } | |
1213 | ||
1214 | #if 0 | |
c23edb78 | 1215 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1216 | "Execute the current buffer as Lisp code.\n\ |
1217 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1218 | nil means discard it; anything else is stream for print.\n\ | |
1219 | \n\ | |
1220 | If there is no error, point does not move. If there is an error,\n\ | |
1221 | point remains at the end of the last character read from the buffer.") | |
1222 | (printflag) | |
1223 | Lisp_Object printflag; | |
1224 | { | |
1225 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1226 | Lisp_Object tem, cbuf; |
1227 | ||
1228 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1229 | |
265a9e55 | 1230 | if (NILP (printflag)) |
078e7b4a JB |
1231 | tem = Qsymbolp; |
1232 | else | |
1233 | tem = printflag; | |
1234 | specbind (Qstandard_output, tem); | |
1235 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1236 | SET_PT (BEGV); | |
94e554db | 1237 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1238 | !NILP (printflag), Qnil, Qnil); |
078e7b4a JB |
1239 | return unbind_to (count, Qnil); |
1240 | } | |
228d4b1c | 1241 | #endif |
078e7b4a | 1242 | |
976350af | 1243 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
078e7b4a JB |
1244 | "Execute the region as Lisp code.\n\ |
1245 | When called from programs, expects two arguments,\n\ | |
1246 | giving starting and ending indices in the current buffer\n\ | |
1247 | of the text to be executed.\n\ | |
1248 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1249 | nil means discard it; anything else is stream for printing it.\n\ | |
976350af RS |
1250 | Also the fourth argument READ-FUNCTION, if non-nil, is used\n\ |
1251 | instead of `read' to read each expression. It gets one argument\n\ | |
1252 | which is the input stream for reading characters.\n\ | |
078e7b4a | 1253 | \n\ |
83f0c0c7 | 1254 | This function does not move point.") |
976350af RS |
1255 | (start, end, printflag, read_function) |
1256 | Lisp_Object start, end, printflag, read_function; | |
078e7b4a JB |
1257 | { |
1258 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1259 | Lisp_Object tem, cbuf; |
1260 | ||
1261 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1262 | |
265a9e55 | 1263 | if (NILP (printflag)) |
078e7b4a JB |
1264 | tem = Qsymbolp; |
1265 | else | |
1266 | tem = printflag; | |
1267 | specbind (Qstandard_output, tem); | |
1268 | ||
265a9e55 | 1269 | if (NILP (printflag)) |
078e7b4a JB |
1270 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1271 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1272 | ||
9391b698 EN |
1273 | /* This both uses start and checks its type. */ |
1274 | Fgoto_char (start); | |
1275 | Fnarrow_to_region (make_number (BEGV), end); | |
94e554db | 1276 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1277 | !NILP (printflag), Qnil, read_function); |
078e7b4a JB |
1278 | |
1279 | return unbind_to (count, Qnil); | |
1280 | } | |
1281 | ||
1282 | #endif /* standalone */ | |
1283 | \f | |
1284 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1285 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1286 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1287 | STREAM or the value of `standard-input' may be:\n\ | |
1288 | a buffer (read from point and advance it)\n\ | |
1289 | a marker (read from where it points and advance it)\n\ | |
1290 | a function (call it with no arguments for each character,\n\ | |
1291 | call it with a char as argument to push a char back)\n\ | |
1292 | a string (takes text from string, starting at the beginning)\n\ | |
1293 | t (read text line using minibuffer and use it).") | |
5be02dff KH |
1294 | (stream) |
1295 | Lisp_Object stream; | |
078e7b4a JB |
1296 | { |
1297 | extern Lisp_Object Fread_minibuffer (); | |
1298 | ||
5be02dff KH |
1299 | if (NILP (stream)) |
1300 | stream = Vstandard_input; | |
1301 | if (EQ (stream, Qt)) | |
1302 | stream = Qread_char; | |
078e7b4a | 1303 | |
00a9a935 | 1304 | readchar_backlog = -1; |
17634846 | 1305 | new_backquote_flag = 0; |
4ad679f9 | 1306 | read_objects = Qnil; |
17634846 | 1307 | |
078e7b4a | 1308 | #ifndef standalone |
5be02dff | 1309 | if (EQ (stream, Qread_char)) |
078e7b4a JB |
1310 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
1311 | #endif | |
1312 | ||
5be02dff KH |
1313 | if (STRINGP (stream)) |
1314 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1315 | |
5be02dff | 1316 | return read0 (stream); |
078e7b4a JB |
1317 | } |
1318 | ||
1319 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1320 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1321 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1322 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1323 | they default to 0 and (length STRING) respectively.") | |
1324 | (string, start, end) | |
1325 | Lisp_Object string, start, end; | |
1326 | { | |
1327 | int startval, endval; | |
1328 | Lisp_Object tem; | |
1329 | ||
1330 | CHECK_STRING (string,0); | |
1331 | ||
265a9e55 | 1332 | if (NILP (end)) |
bed23cb2 | 1333 | endval = XSTRING (string)->size; |
078e7b4a | 1334 | else |
e28552a4 RS |
1335 | { |
1336 | CHECK_NUMBER (end, 2); | |
8028e0ed | 1337 | endval = XINT (end); |
bed23cb2 | 1338 | if (endval < 0 || endval > XSTRING (string)->size) |
078e7b4a JB |
1339 | args_out_of_range (string, end); |
1340 | } | |
1341 | ||
265a9e55 | 1342 | if (NILP (start)) |
078e7b4a JB |
1343 | startval = 0; |
1344 | else | |
e28552a4 RS |
1345 | { |
1346 | CHECK_NUMBER (start, 1); | |
8028e0ed | 1347 | startval = XINT (start); |
078e7b4a JB |
1348 | if (startval < 0 || startval > endval) |
1349 | args_out_of_range (string, start); | |
1350 | } | |
1351 | ||
1352 | read_from_string_index = startval; | |
bed23cb2 | 1353 | read_from_string_index_byte = string_char_to_byte (string, startval); |
078e7b4a JB |
1354 | read_from_string_limit = endval; |
1355 | ||
17634846 | 1356 | new_backquote_flag = 0; |
4ad679f9 | 1357 | read_objects = Qnil; |
17634846 | 1358 | |
078e7b4a | 1359 | tem = read0 (string); |
bed23cb2 | 1360 | return Fcons (tem, make_number (read_from_string_index)); |
078e7b4a JB |
1361 | } |
1362 | \f | |
6428369f KH |
1363 | /* Use this for recursive reads, in contexts where internal tokens |
1364 | are not allowed. */ | |
e28552a4 | 1365 | |
078e7b4a JB |
1366 | static Lisp_Object |
1367 | read0 (readcharfun) | |
1368 | Lisp_Object readcharfun; | |
1369 | { | |
1370 | register Lisp_Object val; | |
e28552a4 | 1371 | int c; |
078e7b4a | 1372 | |
17634846 | 1373 | val = read1 (readcharfun, &c, 0); |
6428369f | 1374 | if (c) |
93d75e4c RS |
1375 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1376 | make_number (c)), | |
e28552a4 | 1377 | Qnil)); |
078e7b4a JB |
1378 | |
1379 | return val; | |
1380 | } | |
1381 | \f | |
1382 | static int read_buffer_size; | |
1383 | static char *read_buffer; | |
1384 | ||
fe0e03f3 KH |
1385 | /* Read multibyte form and return it as a character. C is a first |
1386 | byte of multibyte form, and rest of them are read from | |
1387 | READCHARFUN. */ | |
6f7f43d5 | 1388 | |
fe0e03f3 KH |
1389 | static int |
1390 | read_multibyte (c, readcharfun) | |
1391 | register int c; | |
1392 | Lisp_Object readcharfun; | |
1393 | { | |
1394 | /* We need the actual character code of this multibyte | |
1395 | characters. */ | |
1396 | unsigned char str[MAX_LENGTH_OF_MULTI_BYTE_FORM]; | |
1397 | int len = 0; | |
1398 | ||
1399 | str[len++] = c; | |
1400 | while ((c = READCHAR) >= 0xA0 | |
1401 | && len < MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1402 | str[len++] = c; | |
1403 | UNREAD (c); | |
1404 | return STRING_CHAR (str, len); | |
1405 | } | |
1406 | ||
6f7f43d5 RS |
1407 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1408 | ||
078e7b4a | 1409 | static int |
e7fc914b | 1410 | read_escape (readcharfun, stringp) |
078e7b4a | 1411 | Lisp_Object readcharfun; |
e7fc914b | 1412 | int stringp; |
078e7b4a JB |
1413 | { |
1414 | register int c = READCHAR; | |
1415 | switch (c) | |
1416 | { | |
f3849f25 RS |
1417 | case -1: |
1418 | error ("End of file"); | |
1419 | ||
078e7b4a | 1420 | case 'a': |
265a9e55 | 1421 | return '\007'; |
078e7b4a JB |
1422 | case 'b': |
1423 | return '\b'; | |
f405a585 RS |
1424 | case 'd': |
1425 | return 0177; | |
078e7b4a JB |
1426 | case 'e': |
1427 | return 033; | |
1428 | case 'f': | |
1429 | return '\f'; | |
1430 | case 'n': | |
1431 | return '\n'; | |
1432 | case 'r': | |
1433 | return '\r'; | |
1434 | case 't': | |
1435 | return '\t'; | |
1436 | case 'v': | |
1437 | return '\v'; | |
1438 | case '\n': | |
1439 | return -1; | |
e28552a4 | 1440 | case ' ': |
e7fc914b KH |
1441 | if (stringp) |
1442 | return -1; | |
1443 | return ' '; | |
078e7b4a JB |
1444 | |
1445 | case 'M': | |
1446 | c = READCHAR; | |
1447 | if (c != '-') | |
1448 | error ("Invalid escape character syntax"); | |
1449 | c = READCHAR; | |
1450 | if (c == '\\') | |
e7fc914b | 1451 | c = read_escape (readcharfun, 0); |
7bd279cd | 1452 | return c | meta_modifier; |
f405a585 RS |
1453 | |
1454 | case 'S': | |
1455 | c = READCHAR; | |
1456 | if (c != '-') | |
1457 | error ("Invalid escape character syntax"); | |
1458 | c = READCHAR; | |
1459 | if (c == '\\') | |
e7fc914b | 1460 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1461 | return c | shift_modifier; |
1462 | ||
1463 | case 'H': | |
1464 | c = READCHAR; | |
1465 | if (c != '-') | |
1466 | error ("Invalid escape character syntax"); | |
1467 | c = READCHAR; | |
1468 | if (c == '\\') | |
e7fc914b | 1469 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1470 | return c | hyper_modifier; |
1471 | ||
1472 | case 'A': | |
1473 | c = READCHAR; | |
1474 | if (c != '-') | |
1475 | error ("Invalid escape character syntax"); | |
1476 | c = READCHAR; | |
1477 | if (c == '\\') | |
e7fc914b | 1478 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1479 | return c | alt_modifier; |
1480 | ||
1481 | case 's': | |
1482 | c = READCHAR; | |
1483 | if (c != '-') | |
1484 | error ("Invalid escape character syntax"); | |
1485 | c = READCHAR; | |
1486 | if (c == '\\') | |
e7fc914b | 1487 | c = read_escape (readcharfun, 0); |
7bd279cd | 1488 | return c | super_modifier; |
078e7b4a JB |
1489 | |
1490 | case 'C': | |
1491 | c = READCHAR; | |
1492 | if (c != '-') | |
1493 | error ("Invalid escape character syntax"); | |
1494 | case '^': | |
1495 | c = READCHAR; | |
1496 | if (c == '\\') | |
e7fc914b | 1497 | c = read_escape (readcharfun, 0); |
164d590d KH |
1498 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1499 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1500 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1501 | return c | ctrl_modifier; | |
f405a585 RS |
1502 | /* ASCII control chars are made from letters (both cases), |
1503 | as well as the non-letters within 0100...0137. */ | |
1504 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1505 | return (c & (037 | ~0177)); | |
1506 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1507 | return (c & (037 | ~0177)); | |
078e7b4a | 1508 | else |
7bd279cd | 1509 | return c | ctrl_modifier; |
078e7b4a JB |
1510 | |
1511 | case '0': | |
1512 | case '1': | |
1513 | case '2': | |
1514 | case '3': | |
1515 | case '4': | |
1516 | case '5': | |
1517 | case '6': | |
1518 | case '7': | |
1519 | /* An octal escape, as in ANSI C. */ | |
1520 | { | |
1521 | register int i = c - '0'; | |
1522 | register int count = 0; | |
1523 | while (++count < 3) | |
1524 | { | |
1525 | if ((c = READCHAR) >= '0' && c <= '7') | |
1526 | { | |
1527 | i *= 8; | |
1528 | i += c - '0'; | |
1529 | } | |
1530 | else | |
1531 | { | |
1532 | UNREAD (c); | |
1533 | break; | |
1534 | } | |
1535 | } | |
1536 | return i; | |
1537 | } | |
1538 | ||
1539 | case 'x': | |
1540 | /* A hex escape, as in ANSI C. */ | |
1541 | { | |
1542 | int i = 0; | |
1543 | while (1) | |
1544 | { | |
1545 | c = READCHAR; | |
1546 | if (c >= '0' && c <= '9') | |
1547 | { | |
1548 | i *= 16; | |
1549 | i += c - '0'; | |
1550 | } | |
1551 | else if ((c >= 'a' && c <= 'f') | |
1552 | || (c >= 'A' && c <= 'F')) | |
1553 | { | |
1554 | i *= 16; | |
1555 | if (c >= 'a' && c <= 'f') | |
1556 | i += c - 'a' + 10; | |
1557 | else | |
1558 | i += c - 'A' + 10; | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | UNREAD (c); | |
1563 | break; | |
1564 | } | |
1565 | } | |
1566 | return i; | |
1567 | } | |
1568 | ||
1569 | default: | |
fe0e03f3 KH |
1570 | if (BASE_LEADING_CODE_P (c)) |
1571 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1572 | return c; |
1573 | } | |
1574 | } | |
1575 | ||
6428369f KH |
1576 | /* If the next token is ')' or ']' or '.', we store that character |
1577 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1578 | zero in *PCH and we read and return one lisp object. |
1579 | ||
1580 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1581 | ||
078e7b4a | 1582 | static Lisp_Object |
17634846 | 1583 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1584 | register Lisp_Object readcharfun; |
e28552a4 | 1585 | int *pch; |
17634846 | 1586 | int first_in_list; |
078e7b4a JB |
1587 | { |
1588 | register int c; | |
4ad679f9 EN |
1589 | int uninterned_symbol = 0; |
1590 | ||
6428369f | 1591 | *pch = 0; |
078e7b4a JB |
1592 | |
1593 | retry: | |
1594 | ||
1595 | c = READCHAR; | |
1596 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1597 | ||
1598 | switch (c) | |
1599 | { | |
1600 | case '(': | |
1601 | return read_list (0, readcharfun); | |
1602 | ||
1603 | case '[': | |
c15cfd1f | 1604 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1605 | |
1606 | case ')': | |
1607 | case ']': | |
078e7b4a | 1608 | { |
6428369f KH |
1609 | *pch = c; |
1610 | return Qnil; | |
078e7b4a JB |
1611 | } |
1612 | ||
1613 | case '#': | |
200f684e | 1614 | c = READCHAR; |
c2390933 RS |
1615 | if (c == '^') |
1616 | { | |
1617 | c = READCHAR; | |
1618 | if (c == '[') | |
1619 | { | |
1620 | Lisp_Object tmp; | |
c15cfd1f | 1621 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
1622 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
1623 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1624 | error ("Invalid size char-table"); | |
1625 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1626 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1627 | return tmp; |
1628 | } | |
3701b5de KH |
1629 | else if (c == '^') |
1630 | { | |
1631 | c = READCHAR; | |
1632 | if (c == '[') | |
1633 | { | |
1634 | Lisp_Object tmp; | |
c15cfd1f | 1635 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
1636 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
1637 | error ("Invalid size char-table"); | |
1638 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1639 | XCHAR_TABLE (tmp)->top = Qnil; | |
1640 | return tmp; | |
1641 | } | |
1642 | Fsignal (Qinvalid_read_syntax, | |
1643 | Fcons (make_string ("#^^", 3), Qnil)); | |
1644 | } | |
c2390933 RS |
1645 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1646 | } | |
1647 | if (c == '&') | |
1648 | { | |
1649 | Lisp_Object length; | |
1650 | length = read1 (readcharfun, pch, first_in_list); | |
1651 | c = READCHAR; | |
1652 | if (c == '"') | |
1653 | { | |
1654 | Lisp_Object tmp, val; | |
90ed3ec5 | 1655 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1656 | / BITS_PER_CHAR); |
c2390933 RS |
1657 | |
1658 | UNREAD (c); | |
1659 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1660 | if (size_in_chars != XSTRING (tmp)->size |
1661 | /* We used to print 1 char too many | |
1662 | when the number of bits was a multiple of 8. | |
1663 | Accept such input in case it came from an old version. */ | |
1664 | && ! (XFASTINT (length) | |
1665 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1666 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1667 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1668 | |
1669 | val = Fmake_bool_vector (length, Qnil); | |
1670 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1671 | size_in_chars); | |
67d3b149 EZ |
1672 | /* Clear the extraneous bits in the last byte. */ |
1673 | if (XINT (length) != size_in_chars * BITS_PER_CHAR) | |
1674 | XBOOL_VECTOR (val)->data[size_in_chars - 1] | |
1675 | &= (1 << (XINT (length) % BITS_PER_CHAR)) - 1; | |
c2390933 RS |
1676 | return val; |
1677 | } | |
ec3bbd7d | 1678 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1679 | Qnil)); |
c2390933 | 1680 | } |
200f684e RS |
1681 | if (c == '[') |
1682 | { | |
1683 | /* Accept compiled functions at read-time so that we don't have to | |
1684 | build them using function calls. */ | |
748ef62f | 1685 | Lisp_Object tmp; |
c15cfd1f | 1686 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
1687 | return Fmake_byte_code (XVECTOR (tmp)->size, |
1688 | XVECTOR (tmp)->contents); | |
200f684e | 1689 | } |
748ef62f RS |
1690 | #ifdef USE_TEXT_PROPERTIES |
1691 | if (c == '(') | |
1692 | { | |
1693 | Lisp_Object tmp; | |
1694 | struct gcpro gcpro1; | |
e28552a4 | 1695 | int ch; |
748ef62f RS |
1696 | |
1697 | /* Read the string itself. */ | |
17634846 | 1698 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1699 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1700 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1701 | GCPRO1 (tmp); | |
1702 | /* Read the intervals and their properties. */ | |
1703 | while (1) | |
1704 | { | |
1705 | Lisp_Object beg, end, plist; | |
1706 | ||
17634846 | 1707 | beg = read1 (readcharfun, &ch, 0); |
6428369f KH |
1708 | if (ch == ')') |
1709 | break; | |
1710 | if (ch == 0) | |
17634846 | 1711 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1712 | if (ch == 0) |
17634846 | 1713 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1714 | if (ch) |
748ef62f | 1715 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1716 | Fcons (build_string ("invalid string property list"), |
1717 | Qnil)); | |
748ef62f RS |
1718 | Fset_text_properties (beg, end, plist, tmp); |
1719 | } | |
1720 | UNGCPRO; | |
1721 | return tmp; | |
1722 | } | |
1723 | #endif | |
20ea2964 RS |
1724 | /* #@NUMBER is used to skip NUMBER following characters. |
1725 | That's used in .elc files to skip over doc strings | |
1726 | and function definitions. */ | |
1727 | if (c == '@') | |
1728 | { | |
1729 | int i, nskip = 0; | |
1730 | ||
1731 | /* Read a decimal integer. */ | |
1732 | while ((c = READCHAR) >= 0 | |
1733 | && c >= '0' && c <= '9') | |
1734 | { | |
1735 | nskip *= 10; | |
1736 | nskip += c - '0'; | |
1737 | } | |
1738 | if (c >= 0) | |
1739 | UNREAD (c); | |
1740 | ||
b2a30870 RS |
1741 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
1742 | { | |
1743 | /* If we are supposed to force doc strings into core right now, | |
1744 | record the last string that we skipped, | |
1745 | and record where in the file it comes from. */ | |
c15cfd1f RS |
1746 | |
1747 | /* But first exchange saved_doc_string | |
1748 | with prev_saved_doc_string, so we save two strings. */ | |
1749 | { | |
1750 | char *temp = saved_doc_string; | |
1751 | int temp_size = saved_doc_string_size; | |
1752 | int temp_pos = saved_doc_string_position; | |
1753 | int temp_len = saved_doc_string_length; | |
1754 | ||
1755 | saved_doc_string = prev_saved_doc_string; | |
1756 | saved_doc_string_size = prev_saved_doc_string_size; | |
1757 | saved_doc_string_position = prev_saved_doc_string_position; | |
1758 | saved_doc_string_length = prev_saved_doc_string_length; | |
1759 | ||
1760 | prev_saved_doc_string = temp; | |
1761 | prev_saved_doc_string_size = temp_size; | |
1762 | prev_saved_doc_string_position = temp_pos; | |
1763 | prev_saved_doc_string_length = temp_len; | |
1764 | } | |
1765 | ||
b2a30870 RS |
1766 | if (saved_doc_string_size == 0) |
1767 | { | |
1768 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1769 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1770 | } |
1771 | if (nskip > saved_doc_string_size) | |
1772 | { | |
1773 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1774 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1775 | saved_doc_string_size); | |
b2a30870 RS |
1776 | } |
1777 | ||
1778 | saved_doc_string_position = ftell (instream); | |
1779 | ||
1780 | /* Copy that many characters into saved_doc_string. */ | |
1781 | for (i = 0; i < nskip && c >= 0; i++) | |
1782 | saved_doc_string[i] = c = READCHAR; | |
1783 | ||
1784 | saved_doc_string_length = i; | |
1785 | } | |
1786 | else | |
b2a30870 RS |
1787 | { |
1788 | /* Skip that many characters. */ | |
1789 | for (i = 0; i < nskip && c >= 0; i++) | |
1790 | c = READCHAR; | |
1791 | } | |
d49f0c1a | 1792 | |
20ea2964 RS |
1793 | goto retry; |
1794 | } | |
1795 | if (c == '$') | |
1796 | return Vload_file_name; | |
2b6cae0c RS |
1797 | if (c == '\'') |
1798 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1799 | /* #:foo is the uninterned symbol named foo. */ |
1800 | if (c == ':') | |
1801 | { | |
1802 | uninterned_symbol = 1; | |
1803 | c = READCHAR; | |
1804 | goto default_label; | |
1805 | } | |
1806 | /* Reader forms that can reuse previously read objects. */ | |
1807 | if (c >= '0' && c <= '9') | |
1808 | { | |
1809 | int n = 0; | |
1810 | Lisp_Object tem; | |
2b6cae0c | 1811 | |
4ad679f9 EN |
1812 | /* Read a non-negative integer. */ |
1813 | while (c >= '0' && c <= '9') | |
1814 | { | |
1815 | n *= 10; | |
1816 | n += c - '0'; | |
1817 | c = READCHAR; | |
1818 | } | |
1819 | /* #n=object returns object, but associates it with n for #n#. */ | |
1820 | if (c == '=') | |
1821 | { | |
9e062b6c RS |
1822 | /* Make a placeholder for #n# to use temporarily */ |
1823 | Lisp_Object placeholder; | |
1824 | Lisp_Object cell; | |
1825 | ||
1826 | placeholder = Fcons(Qnil, Qnil); | |
1827 | cell = Fcons (make_number (n), placeholder); | |
1828 | read_objects = Fcons (cell, read_objects); | |
1829 | ||
1830 | /* Read the object itself. */ | |
4ad679f9 | 1831 | tem = read0 (readcharfun); |
9e062b6c RS |
1832 | |
1833 | /* Now put it everywhere the placeholder was... */ | |
1834 | substitute_object_in_subtree (tem, placeholder); | |
1835 | ||
1836 | /* ...and #n# will use the real value from now on. */ | |
1837 | Fsetcdr (cell, tem); | |
1838 | ||
4ad679f9 EN |
1839 | return tem; |
1840 | } | |
1841 | /* #n# returns a previously read object. */ | |
1842 | if (c == '#') | |
1843 | { | |
1844 | tem = Fassq (make_number (n), read_objects); | |
1845 | if (CONSP (tem)) | |
1846 | return XCDR (tem); | |
1847 | /* Fall through to error message. */ | |
1848 | } | |
1849 | /* Fall through to error message. */ | |
1850 | } | |
20ea2964 | 1851 | |
200f684e | 1852 | UNREAD (c); |
748ef62f | 1853 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
1854 | |
1855 | case ';': | |
1856 | while ((c = READCHAR) >= 0 && c != '\n'); | |
1857 | goto retry; | |
1858 | ||
1859 | case '\'': | |
1860 | { | |
1861 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
1862 | } | |
1863 | ||
17634846 RS |
1864 | case '`': |
1865 | if (first_in_list) | |
1866 | goto default_label; | |
1867 | else | |
1868 | { | |
1869 | Lisp_Object value; | |
1870 | ||
1871 | new_backquote_flag = 1; | |
1872 | value = read0 (readcharfun); | |
1873 | new_backquote_flag = 0; | |
1874 | ||
1875 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
1876 | } | |
1877 | ||
1878 | case ',': | |
1879 | if (new_backquote_flag) | |
1880 | { | |
1881 | Lisp_Object comma_type = Qnil; | |
1882 | Lisp_Object value; | |
1883 | int ch = READCHAR; | |
1884 | ||
1885 | if (ch == '@') | |
1886 | comma_type = Qcomma_at; | |
1887 | else if (ch == '.') | |
1888 | comma_type = Qcomma_dot; | |
1889 | else | |
1890 | { | |
1891 | if (ch >= 0) UNREAD (ch); | |
1892 | comma_type = Qcomma; | |
1893 | } | |
1894 | ||
1895 | new_backquote_flag = 0; | |
1896 | value = read0 (readcharfun); | |
1897 | new_backquote_flag = 1; | |
1898 | return Fcons (comma_type, Fcons (value, Qnil)); | |
1899 | } | |
1900 | else | |
1901 | goto default_label; | |
1902 | ||
078e7b4a JB |
1903 | case '?': |
1904 | { | |
1905 | register Lisp_Object val; | |
1906 | ||
1907 | c = READCHAR; | |
1908 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1909 | ||
1910 | if (c == '\\') | |
e7fc914b | 1911 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
1912 | else if (BASE_LEADING_CODE_P (c)) |
1913 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 1914 | |
6f7f43d5 | 1915 | return make_number (c); |
078e7b4a JB |
1916 | } |
1917 | ||
00a9a935 | 1918 | case '"': |
078e7b4a JB |
1919 | { |
1920 | register char *p = read_buffer; | |
1921 | register char *end = read_buffer + read_buffer_size; | |
1922 | register int c; | |
e7fc914b KH |
1923 | /* Nonzero if we saw an escape sequence specifying |
1924 | a multibyte character. */ | |
1925 | int force_multibyte = 0; | |
1926 | /* Nonzero if we saw an escape sequence specifying | |
1927 | a single-byte character. */ | |
1928 | int force_singlebyte = 0; | |
078e7b4a | 1929 | int cancel = 0; |
e7fc914b | 1930 | int nchars; |
078e7b4a JB |
1931 | |
1932 | while ((c = READCHAR) >= 0 | |
1933 | && c != '\"') | |
1934 | { | |
bed23cb2 | 1935 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
1936 | { |
1937 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1938 | p += new - read_buffer; | |
1939 | read_buffer += new - read_buffer; | |
1940 | end = read_buffer + read_buffer_size; | |
1941 | } | |
bed23cb2 | 1942 | |
078e7b4a | 1943 | if (c == '\\') |
03e88613 | 1944 | { |
e7fc914b | 1945 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
1946 | |
1947 | /* C is -1 if \ newline has just been seen */ | |
1948 | if (c == -1) | |
03e88613 | 1949 | { |
bed23cb2 RS |
1950 | if (p == read_buffer) |
1951 | cancel = 1; | |
03e88613 RS |
1952 | continue; |
1953 | } | |
bed23cb2 | 1954 | |
94e554db RS |
1955 | /* If an escape specifies a non-ASCII single-byte character, |
1956 | this must be a unibyte string. */ | |
164d590d KH |
1957 | if (SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK)) |
1958 | && ! ASCII_BYTE_P ((c & ~CHAR_MODIFIER_MASK))) | |
e7fc914b | 1959 | force_singlebyte = 1; |
03e88613 | 1960 | } |
6f7f43d5 | 1961 | |
164d590d | 1962 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) |
078e7b4a | 1963 | { |
bed23cb2 RS |
1964 | unsigned char workbuf[4]; |
1965 | unsigned char *str = workbuf; | |
1966 | int length; | |
1967 | ||
164d590d KH |
1968 | /* Any modifiers for a multibyte character are invalid. */ |
1969 | if (c & CHAR_MODIFIER_MASK) | |
1970 | error ("Invalid modifier in string"); | |
bed23cb2 RS |
1971 | length = non_ascii_char_to_string (c, workbuf, &str); |
1972 | if (length > 1) | |
1973 | force_multibyte = 1; | |
1974 | ||
1975 | bcopy (str, p, length); | |
1976 | p += length; | |
078e7b4a JB |
1977 | } |
1978 | else | |
f943104a | 1979 | { |
988c2f83 RS |
1980 | /* Allow `\C- ' and `\C-?'. */ |
1981 | if (c == (CHAR_CTL | ' ')) | |
1982 | c = 0; | |
1983 | else if (c == (CHAR_CTL | '?')) | |
1984 | c = 127; | |
1985 | ||
164d590d KH |
1986 | if (c & CHAR_SHIFT) |
1987 | { | |
1988 | /* Shift modifier is valid only with [A-Za-z]. */ | |
1989 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
1990 | c &= ~CHAR_SHIFT; | |
1991 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
1992 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
1993 | } | |
1994 | ||
f943104a KH |
1995 | if (c & CHAR_META) |
1996 | /* Move the meta bit to the right place for a string. */ | |
1997 | c = (c & ~CHAR_META) | 0x80; | |
1998 | if (c & ~0xff) | |
1999 | error ("Invalid modifier in string"); | |
2000 | *p++ = c; | |
2001 | } | |
078e7b4a | 2002 | } |
6f7f43d5 RS |
2003 | if (c < 0) |
2004 | return Fsignal (Qend_of_file, Qnil); | |
078e7b4a JB |
2005 | |
2006 | /* If purifying, and string starts with \ newline, | |
2007 | return zero instead. This is for doc strings | |
08564963 | 2008 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2009 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2010 | return make_number (0); |
2011 | ||
6f46329a | 2012 | if (force_multibyte) |
1d10ac5b | 2013 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); |
6f46329a RS |
2014 | else if (force_singlebyte) |
2015 | nchars = p - read_buffer; | |
94e554db RS |
2016 | else if (load_convert_to_unibyte) |
2017 | { | |
2018 | Lisp_Object string; | |
2019 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); | |
2020 | if (p - read_buffer != nchars) | |
2021 | { | |
2022 | string = make_multibyte_string (read_buffer, nchars, | |
2023 | p - read_buffer); | |
2024 | return Fstring_make_unibyte (string); | |
2025 | } | |
2026 | } | |
8db9dc66 RS |
2027 | else if (EQ (readcharfun, Qget_file_char) |
2028 | || EQ (readcharfun, Qlambda)) | |
bed23cb2 RS |
2029 | /* Nowadays, reading directly from a file |
2030 | is used only for compiled Emacs Lisp files, | |
8db9dc66 RS |
2031 | and those always use the Emacs internal encoding. |
2032 | Meanwhile, Qlambda is used for reading dynamic byte code | |
2033 | (compiled with byte-compile-dynamic = t). */ | |
bed23cb2 | 2034 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); |
e28552a4 | 2035 | else |
bed23cb2 RS |
2036 | /* In all other cases, if we read these bytes as |
2037 | separate characters, treat them as separate characters now. */ | |
e7fc914b KH |
2038 | nchars = p - read_buffer; |
2039 | ||
2040 | if (read_pure) | |
491f16a2 RS |
2041 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
2042 | (force_multibyte | |
2043 | || (p - read_buffer != nchars))); | |
2044 | return make_specified_string (read_buffer, nchars, p - read_buffer, | |
2045 | (force_multibyte | |
2046 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2047 | } |
2048 | ||
109d300c JB |
2049 | case '.': |
2050 | { | |
2051 | #ifdef LISP_FLOAT_TYPE | |
2052 | /* If a period is followed by a number, then we should read it | |
2053 | as a floating point number. Otherwise, it denotes a dotted | |
2054 | pair. */ | |
2055 | int next_char = READCHAR; | |
2056 | UNREAD (next_char); | |
2057 | ||
075027b1 | 2058 | if (! (next_char >= '0' && next_char <= '9')) |
109d300c JB |
2059 | #endif |
2060 | { | |
6428369f KH |
2061 | *pch = c; |
2062 | return Qnil; | |
109d300c JB |
2063 | } |
2064 | ||
2065 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2066 | below will now loop at least once, assuring that we will not | |
2067 | try to UNREAD two characters in a row. */ | |
2068 | } | |
078e7b4a | 2069 | default: |
17634846 | 2070 | default_label: |
078e7b4a JB |
2071 | if (c <= 040) goto retry; |
2072 | { | |
2073 | register char *p = read_buffer; | |
481c6336 | 2074 | int quoted = 0; |
078e7b4a JB |
2075 | |
2076 | { | |
2077 | register char *end = read_buffer + read_buffer_size; | |
2078 | ||
6f7f43d5 RS |
2079 | while (c > 040 |
2080 | && !(c == '\"' || c == '\'' || c == ';' || c == '?' | |
2081 | || c == '(' || c == ')' | |
109d300c | 2082 | #ifndef LISP_FLOAT_TYPE |
6f7f43d5 RS |
2083 | /* If we have floating-point support, then we need |
2084 | to allow <digits><dot><digits>. */ | |
2085 | || c =='.' | |
078e7b4a | 2086 | #endif /* not LISP_FLOAT_TYPE */ |
6f7f43d5 RS |
2087 | || c == '[' || c == ']' || c == '#' |
2088 | )) | |
078e7b4a | 2089 | { |
bed23cb2 | 2090 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
2091 | { |
2092 | register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2093 | p += new - read_buffer; | |
2094 | read_buffer += new - read_buffer; | |
2095 | end = read_buffer + read_buffer_size; | |
2096 | } | |
2097 | if (c == '\\') | |
481c6336 RS |
2098 | { |
2099 | c = READCHAR; | |
2100 | quoted = 1; | |
2101 | } | |
6f7f43d5 | 2102 | |
bed23cb2 RS |
2103 | if (! SINGLE_BYTE_CHAR_P (c)) |
2104 | { | |
2105 | unsigned char workbuf[4]; | |
2106 | unsigned char *str = workbuf; | |
2107 | int length; | |
2108 | ||
2109 | length = non_ascii_char_to_string (c, workbuf, &str); | |
2110 | ||
2111 | bcopy (str, p, length); | |
2112 | p += length; | |
2113 | } | |
2114 | else | |
2115 | *p++ = c; | |
6f7f43d5 | 2116 | |
078e7b4a JB |
2117 | c = READCHAR; |
2118 | } | |
2119 | ||
2120 | if (p == end) | |
2121 | { | |
2122 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2123 | p += new - read_buffer; | |
2124 | read_buffer += new - read_buffer; | |
2125 | /* end = read_buffer + read_buffer_size; */ | |
2126 | } | |
2127 | *p = 0; | |
2128 | if (c >= 0) | |
2129 | UNREAD (c); | |
2130 | } | |
2131 | ||
4ad679f9 | 2132 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2133 | { |
2134 | register char *p1; | |
2135 | register Lisp_Object val; | |
2136 | p1 = read_buffer; | |
2137 | if (*p1 == '+' || *p1 == '-') p1++; | |
2138 | /* Is it an integer? */ | |
2139 | if (p1 != p) | |
2140 | { | |
2141 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
dbc4e1c1 | 2142 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
2143 | /* Integers can have trailing decimal points. */ |
2144 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
dbc4e1c1 | 2145 | #endif |
481c6336 RS |
2146 | if (p1 == p) |
2147 | /* It is an integer. */ | |
2148 | { | |
dbc4e1c1 | 2149 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
2150 | if (p1[-1] == '.') |
2151 | p1[-1] = '\0'; | |
dbc4e1c1 | 2152 | #endif |
faca07fb RS |
2153 | if (sizeof (int) == sizeof (EMACS_INT)) |
2154 | XSETINT (val, atoi (read_buffer)); | |
2155 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2156 | XSETINT (val, atol (read_buffer)); | |
2157 | else | |
2158 | abort (); | |
481c6336 RS |
2159 | return val; |
2160 | } | |
2161 | } | |
078e7b4a | 2162 | #ifdef LISP_FLOAT_TYPE |
481c6336 | 2163 | if (isfloat_string (read_buffer)) |
eb659c41 | 2164 | { |
a8972052 PE |
2165 | /* Compute NaN and infinities using 0.0 in a variable, |
2166 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2167 | than we are. */ |
3c329963 | 2168 | double zero = 0.0; |
a8972052 PE |
2169 | |
2170 | double value; | |
2171 | ||
2172 | /* Negate the value ourselves. This treats 0, NaNs, | |
2173 | and infinity properly on IEEE floating point hosts, | |
2174 | and works around a common bug where atof ("-0.0") | |
2175 | drops the sign. */ | |
2176 | int negative = read_buffer[0] == '-'; | |
2177 | ||
2178 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2179 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2180 | switch (p[-1]) |
eb659c41 | 2181 | { |
a8972052 PE |
2182 | case 'F': |
2183 | value = 1.0 / zero; | |
2184 | break; | |
2185 | case 'N': | |
2186 | value = zero / zero; | |
2187 | break; | |
2188 | default: | |
2189 | value = atof (read_buffer + negative); | |
2190 | break; | |
eb659c41 | 2191 | } |
a8972052 PE |
2192 | |
2193 | return make_float (negative ? - value : value); | |
eb659c41 | 2194 | } |
078e7b4a | 2195 | #endif |
481c6336 | 2196 | } |
078e7b4a | 2197 | |
4ad679f9 EN |
2198 | if (uninterned_symbol) |
2199 | return make_symbol (read_buffer); | |
2200 | else | |
2201 | return intern (read_buffer); | |
078e7b4a JB |
2202 | } |
2203 | } | |
2204 | } | |
2205 | \f | |
9e062b6c RS |
2206 | |
2207 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2208 | static Lisp_Object seen_list; | |
2209 | ||
2210 | static void | |
2211 | substitute_object_in_subtree (object, placeholder) | |
2212 | Lisp_Object object; | |
2213 | Lisp_Object placeholder; | |
2214 | { | |
2215 | Lisp_Object check_object; | |
2216 | ||
2217 | /* We haven't seen any objects when we start. */ | |
2218 | seen_list = Qnil; | |
2219 | ||
2220 | /* Make all the substitutions. */ | |
2221 | check_object | |
2222 | = substitute_object_recurse (object, placeholder, object); | |
2223 | ||
2224 | /* Clear seen_list because we're done with it. */ | |
2225 | seen_list = Qnil; | |
2226 | ||
2227 | /* The returned object here is expected to always eq the | |
2228 | original. */ | |
2229 | if (!EQ (check_object, object)) | |
2230 | error ("Unexpected mutation error in reader"); | |
2231 | } | |
2232 | ||
2233 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2234 | #define SUBSTITUTE(get_val, set_val) \ | |
2235 | { \ | |
2236 | Lisp_Object old_value = get_val; \ | |
2237 | Lisp_Object true_value \ | |
2238 | = substitute_object_recurse (object, placeholder,\ | |
2239 | old_value); \ | |
2240 | \ | |
2241 | if (!EQ (old_value, true_value)) \ | |
2242 | { \ | |
2243 | set_val; \ | |
2244 | } \ | |
2245 | } | |
2246 | ||
2247 | static Lisp_Object | |
2248 | substitute_object_recurse (object, placeholder, subtree) | |
2249 | Lisp_Object object; | |
2250 | Lisp_Object placeholder; | |
2251 | Lisp_Object subtree; | |
2252 | { | |
2253 | /* If we find the placeholder, return the target object. */ | |
2254 | if (EQ (placeholder, subtree)) | |
2255 | return object; | |
2256 | ||
2257 | /* If we've been to this node before, don't explore it again. */ | |
2258 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2259 | return subtree; | |
2260 | ||
2261 | /* If this node can be the entry point to a cycle, remember that | |
2262 | we've seen it. It can only be such an entry point if it was made | |
2263 | by #n=, which means that we can find it as a value in | |
2264 | read_objects. */ | |
2265 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2266 | seen_list = Fcons (subtree, seen_list); | |
2267 | ||
2268 | /* Recurse according to subtree's type. | |
2269 | Every branch must return a Lisp_Object. */ | |
2270 | switch (XTYPE (subtree)) | |
2271 | { | |
2272 | case Lisp_Vectorlike: | |
2273 | { | |
2274 | int i; | |
2275 | int length = Flength(subtree); | |
2276 | for (i = 0; i < length; i++) | |
2277 | { | |
2278 | Lisp_Object idx = make_number (i); | |
2279 | SUBSTITUTE (Faref (subtree, idx), | |
2280 | Faset (subtree, idx, true_value)); | |
2281 | } | |
2282 | return subtree; | |
2283 | } | |
2284 | ||
2285 | case Lisp_Cons: | |
2286 | { | |
2287 | SUBSTITUTE (Fcar_safe (subtree), | |
2288 | Fsetcar (subtree, true_value)); | |
2289 | SUBSTITUTE (Fcdr_safe (subtree), | |
2290 | Fsetcdr (subtree, true_value)); | |
2291 | return subtree; | |
2292 | } | |
2293 | ||
2294 | #ifdef USE_TEXT_PROPERTIES | |
2295 | case Lisp_String: | |
2296 | { | |
2297 | /* Check for text properties in each interval. | |
2298 | substitute_in_interval contains part of the logic. */ | |
2299 | ||
2300 | INTERVAL root_interval = XSTRING (subtree)->intervals; | |
2301 | Lisp_Object arg = Fcons (object, placeholder); | |
2302 | ||
2303 | traverse_intervals (root_interval, 1, 0, | |
2304 | &substitute_in_interval, arg); | |
2305 | ||
2306 | return subtree; | |
2307 | } | |
2308 | #endif /* defined USE_TEXT_PROPERTIES */ | |
2309 | ||
2310 | /* Other types don't recurse any further. */ | |
2311 | default: | |
2312 | return subtree; | |
2313 | } | |
2314 | } | |
2315 | ||
2316 | /* Helper function for substitute_object_recurse. */ | |
2317 | static void | |
2318 | substitute_in_interval (interval, arg) | |
2319 | INTERVAL interval; | |
2320 | Lisp_Object arg; | |
2321 | { | |
2322 | Lisp_Object object = Fcar (arg); | |
2323 | Lisp_Object placeholder = Fcdr (arg); | |
2324 | ||
2325 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2326 | } | |
2327 | ||
2328 | \f | |
078e7b4a JB |
2329 | #ifdef LISP_FLOAT_TYPE |
2330 | ||
078e7b4a JB |
2331 | #define LEAD_INT 1 |
2332 | #define DOT_CHAR 2 | |
2333 | #define TRAIL_INT 4 | |
2334 | #define E_CHAR 8 | |
2335 | #define EXP_INT 16 | |
2336 | ||
2337 | int | |
2338 | isfloat_string (cp) | |
2339 | register char *cp; | |
2340 | { | |
c1a2f60a | 2341 | register int state; |
078e7b4a | 2342 | |
d8578e58 RS |
2343 | char *start = cp; |
2344 | ||
078e7b4a JB |
2345 | state = 0; |
2346 | if (*cp == '+' || *cp == '-') | |
2347 | cp++; | |
2348 | ||
075027b1 | 2349 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2350 | { |
2351 | state |= LEAD_INT; | |
075027b1 RS |
2352 | while (*cp >= '0' && *cp <= '9') |
2353 | cp++; | |
078e7b4a JB |
2354 | } |
2355 | if (*cp == '.') | |
2356 | { | |
2357 | state |= DOT_CHAR; | |
2358 | cp++; | |
2359 | } | |
075027b1 | 2360 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2361 | { |
2362 | state |= TRAIL_INT; | |
075027b1 | 2363 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2364 | cp++; |
2365 | } | |
a35f88bf | 2366 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2367 | { |
2368 | state |= E_CHAR; | |
2369 | cp++; | |
e73997a1 RS |
2370 | if (*cp == '+' || *cp == '-') |
2371 | cp++; | |
078e7b4a | 2372 | } |
078e7b4a | 2373 | |
075027b1 | 2374 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2375 | { |
2376 | state |= EXP_INT; | |
075027b1 | 2377 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2378 | cp++; |
2379 | } | |
d8578e58 RS |
2380 | else if (cp == start) |
2381 | ; | |
eb659c41 RS |
2382 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2383 | { | |
2384 | state |= EXP_INT; | |
2385 | cp += 3; | |
2386 | } | |
2387 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2388 | { | |
2389 | state |= EXP_INT; | |
2390 | cp += 3; | |
2391 | } | |
2392 | ||
37579d7c | 2393 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2394 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2395 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2396 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2397 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2398 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a JB |
2399 | } |
2400 | #endif /* LISP_FLOAT_TYPE */ | |
2401 | \f | |
2402 | static Lisp_Object | |
c15cfd1f | 2403 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2404 | Lisp_Object readcharfun; |
c15cfd1f | 2405 | int bytecodeflag; |
078e7b4a JB |
2406 | { |
2407 | register int i; | |
2408 | register int size; | |
2409 | register Lisp_Object *ptr; | |
c15cfd1f | 2410 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2411 | register struct Lisp_Cons *otem; |
2412 | Lisp_Object len; | |
2413 | ||
2414 | tem = read_list (1, readcharfun); | |
2415 | len = Flength (tem); | |
2416 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2417 | ||
078e7b4a JB |
2418 | size = XVECTOR (vector)->size; |
2419 | ptr = XVECTOR (vector)->contents; | |
2420 | for (i = 0; i < size; i++) | |
2421 | { | |
c15cfd1f RS |
2422 | item = Fcar (tem); |
2423 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2424 | bytecode object, the docstring containing the bytecode and | |
2425 | constants values must be treated as unibyte and passed to | |
2426 | Fread, to get the actual bytecode string and constants vector. */ | |
2427 | if (bytecodeflag && load_force_doc_strings) | |
2428 | { | |
2429 | if (i == COMPILED_BYTECODE) | |
2430 | { | |
2431 | if (!STRINGP (item)) | |
2432 | error ("invalid byte code"); | |
2433 | ||
2434 | /* Delay handling the bytecode slot until we know whether | |
2435 | it is lazily-loaded (we can tell by whether the | |
2436 | constants slot is nil). */ | |
2437 | ptr[COMPILED_CONSTANTS] = item; | |
2438 | item = Qnil; | |
2439 | } | |
2440 | else if (i == COMPILED_CONSTANTS) | |
2441 | { | |
2442 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2443 | ||
2444 | if (NILP (item)) | |
2445 | { | |
2446 | /* Coerce string to unibyte (like string-as-unibyte, | |
2447 | but without generating extra garbage and | |
2448 | guaranteeing no change in the contents). */ | |
2449 | XSTRING (bytestr)->size = STRING_BYTES (XSTRING (bytestr)); | |
2450 | SET_STRING_BYTES (XSTRING (bytestr), -1); | |
2451 | ||
2452 | item = Fread (bytestr); | |
2453 | if (!CONSP (item)) | |
2454 | error ("invalid byte code"); | |
2455 | ||
2456 | otem = XCONS (item); | |
2457 | bytestr = XCONS (item)->car; | |
2458 | item = XCONS (item)->cdr; | |
2459 | free_cons (otem); | |
2460 | } | |
2461 | ||
2462 | /* Now handle the bytecode slot. */ | |
2463 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2464 | } | |
2465 | } | |
2466 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2467 | otem = XCONS (tem); |
2468 | tem = Fcdr (tem); | |
2469 | free_cons (otem); | |
2470 | } | |
2471 | return vector; | |
2472 | } | |
2473 | ||
6f7f43d5 RS |
2474 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2475 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2476 | and make structure pure. */ |
2477 | ||
2478 | static Lisp_Object | |
2479 | read_list (flag, readcharfun) | |
2480 | int flag; | |
2481 | register Lisp_Object readcharfun; | |
2482 | { | |
2483 | /* -1 means check next element for defun, | |
2484 | 0 means don't check, | |
2485 | 1 means already checked and found defun. */ | |
2486 | int defunflag = flag < 0 ? -1 : 0; | |
2487 | Lisp_Object val, tail; | |
2488 | register Lisp_Object elt, tem; | |
2489 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2490 | /* 0 is the normal case. |
b2a30870 RS |
2491 | 1 means this list is a doc reference; replace it with the number 0. |
2492 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 2493 | int doc_reference = 0; |
078e7b4a | 2494 | |
17634846 RS |
2495 | /* Initialize this to 1 if we are reading a list. */ |
2496 | int first_in_list = flag <= 0; | |
2497 | ||
078e7b4a JB |
2498 | val = Qnil; |
2499 | tail = Qnil; | |
2500 | ||
2501 | while (1) | |
2502 | { | |
e28552a4 | 2503 | int ch; |
078e7b4a | 2504 | GCPRO2 (val, tail); |
17634846 | 2505 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2506 | UNGCPRO; |
20ea2964 | 2507 | |
17634846 RS |
2508 | first_in_list = 0; |
2509 | ||
821d417e | 2510 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2511 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2512 | && ! NILP (elt) |
821d417e RS |
2513 | && !NILP (Vpurify_flag)) |
2514 | { | |
2515 | if (NILP (Vdoc_file_name)) | |
2516 | /* We have not yet called Snarf-documentation, so assume | |
2517 | this file is described in the DOC-MM.NN file | |
2518 | and Snarf-documentation will fill in the right value later. | |
2519 | For now, replace the whole list with 0. */ | |
2520 | doc_reference = 1; | |
2521 | else | |
2522 | /* We have already called Snarf-documentation, so make a relative | |
2523 | file name for this file, so it can be found properly | |
2524 | in the installed Lisp directory. | |
2525 | We don't use Fexpand_file_name because that would make | |
2526 | the directory absolute now. */ | |
2527 | elt = concat2 (build_string ("../lisp/"), | |
2528 | Ffile_name_nondirectory (elt)); | |
2529 | } | |
b2a30870 | 2530 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2531 | && ! NILP (elt) |
b2a30870 RS |
2532 | && load_force_doc_strings) |
2533 | doc_reference = 2; | |
20ea2964 | 2534 | |
6428369f | 2535 | if (ch) |
078e7b4a JB |
2536 | { |
2537 | if (flag > 0) | |
2538 | { | |
6428369f | 2539 | if (ch == ']') |
078e7b4a | 2540 | return val; |
821d417e RS |
2541 | Fsignal (Qinvalid_read_syntax, |
2542 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2543 | } |
6428369f | 2544 | if (ch == ')') |
078e7b4a | 2545 | return val; |
6428369f | 2546 | if (ch == '.') |
078e7b4a JB |
2547 | { |
2548 | GCPRO2 (val, tail); | |
265a9e55 | 2549 | if (!NILP (tail)) |
078e7b4a JB |
2550 | XCONS (tail)->cdr = read0 (readcharfun); |
2551 | else | |
2552 | val = read0 (readcharfun); | |
17634846 | 2553 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2554 | UNGCPRO; |
6428369f | 2555 | if (ch == ')') |
821d417e RS |
2556 | { |
2557 | if (doc_reference == 1) | |
2558 | return make_number (0); | |
b2a30870 RS |
2559 | if (doc_reference == 2) |
2560 | { | |
2561 | /* Get a doc string from the file we are loading. | |
2562 | If it's in saved_doc_string, get it from there. */ | |
2563 | int pos = XINT (XCONS (val)->cdr); | |
c15cfd1f RS |
2564 | /* Position is negative for user variables. */ |
2565 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
2566 | if (pos >= saved_doc_string_position |
2567 | && pos < (saved_doc_string_position | |
2568 | + saved_doc_string_length)) | |
2569 | { | |
2570 | int start = pos - saved_doc_string_position; | |
2571 | int from, to; | |
2572 | ||
2573 | /* Process quoting with ^A, | |
2574 | and find the end of the string, | |
2575 | which is marked with ^_ (037). */ | |
2576 | for (from = start, to = start; | |
2577 | saved_doc_string[from] != 037;) | |
2578 | { | |
2579 | int c = saved_doc_string[from++]; | |
2580 | if (c == 1) | |
2581 | { | |
2582 | c = saved_doc_string[from++]; | |
2583 | if (c == 1) | |
2584 | saved_doc_string[to++] = c; | |
2585 | else if (c == '0') | |
2586 | saved_doc_string[to++] = 0; | |
2587 | else if (c == '_') | |
2588 | saved_doc_string[to++] = 037; | |
2589 | } | |
2590 | else | |
2591 | saved_doc_string[to++] = c; | |
2592 | } | |
2593 | ||
2594 | return make_string (saved_doc_string + start, | |
2595 | to - start); | |
2596 | } | |
c15cfd1f RS |
2597 | /* Look in prev_saved_doc_string the same way. */ |
2598 | else if (pos >= prev_saved_doc_string_position | |
2599 | && pos < (prev_saved_doc_string_position | |
2600 | + prev_saved_doc_string_length)) | |
2601 | { | |
2602 | int start = pos - prev_saved_doc_string_position; | |
2603 | int from, to; | |
2604 | ||
2605 | /* Process quoting with ^A, | |
2606 | and find the end of the string, | |
2607 | which is marked with ^_ (037). */ | |
2608 | for (from = start, to = start; | |
2609 | prev_saved_doc_string[from] != 037;) | |
2610 | { | |
2611 | int c = prev_saved_doc_string[from++]; | |
2612 | if (c == 1) | |
2613 | { | |
2614 | c = prev_saved_doc_string[from++]; | |
2615 | if (c == 1) | |
2616 | prev_saved_doc_string[to++] = c; | |
2617 | else if (c == '0') | |
2618 | prev_saved_doc_string[to++] = 0; | |
2619 | else if (c == '_') | |
2620 | prev_saved_doc_string[to++] = 037; | |
2621 | } | |
2622 | else | |
2623 | prev_saved_doc_string[to++] = c; | |
2624 | } | |
2625 | ||
2626 | return make_string (prev_saved_doc_string + start, | |
2627 | to - start); | |
2628 | } | |
b2a30870 | 2629 | else |
6fe9cce5 | 2630 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
2631 | } |
2632 | ||
821d417e RS |
2633 | return val; |
2634 | } | |
078e7b4a JB |
2635 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2636 | } | |
2637 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2638 | } | |
2639 | tem = (read_pure && flag <= 0 | |
2640 | ? pure_cons (elt, Qnil) | |
2641 | : Fcons (elt, Qnil)); | |
265a9e55 | 2642 | if (!NILP (tail)) |
078e7b4a JB |
2643 | XCONS (tail)->cdr = tem; |
2644 | else | |
2645 | val = tem; | |
2646 | tail = tem; | |
2647 | if (defunflag < 0) | |
2648 | defunflag = EQ (elt, Qdefun); | |
2649 | else if (defunflag > 0) | |
2650 | read_pure = 1; | |
2651 | } | |
2652 | } | |
2653 | \f | |
2654 | Lisp_Object Vobarray; | |
2655 | Lisp_Object initial_obarray; | |
2656 | ||
d007f5c8 RS |
2657 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2658 | ||
2659 | int oblookup_last_bucket_number; | |
2660 | ||
2661 | static int hash_string (); | |
2662 | Lisp_Object oblookup (); | |
2663 | ||
2664 | /* Get an error if OBARRAY is not an obarray. | |
2665 | If it is one, return it. */ | |
2666 | ||
078e7b4a JB |
2667 | Lisp_Object |
2668 | check_obarray (obarray) | |
2669 | Lisp_Object obarray; | |
2670 | { | |
cfff016d | 2671 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2672 | { |
2673 | /* If Vobarray is now invalid, force it to be valid. */ | |
2674 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2675 | ||
2676 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2677 | } | |
2678 | return obarray; | |
2679 | } | |
2680 | ||
d007f5c8 RS |
2681 | /* Intern the C string STR: return a symbol with that name, |
2682 | interned in the current obarray. */ | |
078e7b4a JB |
2683 | |
2684 | Lisp_Object | |
2685 | intern (str) | |
2686 | char *str; | |
2687 | { | |
2688 | Lisp_Object tem; | |
2689 | int len = strlen (str); | |
153a17b7 | 2690 | Lisp_Object obarray; |
078e7b4a | 2691 | |
153a17b7 | 2692 | obarray = Vobarray; |
cfff016d | 2693 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2694 | obarray = check_obarray (obarray); |
e28552a4 | 2695 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2696 | if (SYMBOLP (tem)) |
078e7b4a | 2697 | return tem; |
87631ef7 | 2698 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2699 | } |
4ad679f9 EN |
2700 | |
2701 | /* Create an uninterned symbol with name STR. */ | |
2702 | ||
2703 | Lisp_Object | |
2704 | make_symbol (str) | |
2705 | char *str; | |
2706 | { | |
2707 | int len = strlen (str); | |
2708 | ||
2709 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 2710 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
2711 | : make_string (str, len))); |
2712 | } | |
d007f5c8 | 2713 | \f |
078e7b4a JB |
2714 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2715 | "Return the canonical symbol whose name is STRING.\n\ | |
2716 | If there is none, one is created by this function and returned.\n\ | |
2717 | A second optional argument specifies the obarray to use;\n\ | |
2718 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2719 | (string, obarray) |
2720 | Lisp_Object string, obarray; | |
078e7b4a JB |
2721 | { |
2722 | register Lisp_Object tem, sym, *ptr; | |
2723 | ||
265a9e55 | 2724 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2725 | obarray = check_obarray (obarray); |
2726 | ||
9391b698 | 2727 | CHECK_STRING (string, 0); |
078e7b4a | 2728 | |
e28552a4 RS |
2729 | tem = oblookup (obarray, XSTRING (string)->data, |
2730 | XSTRING (string)->size, | |
fc932ac6 | 2731 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2732 | if (!INTEGERP (tem)) |
078e7b4a JB |
2733 | return tem; |
2734 | ||
265a9e55 | 2735 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2736 | string = Fpurecopy (string); |
2737 | sym = Fmake_symbol (string); | |
4ad679f9 | 2738 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2739 | |
bdd47b1c | 2740 | if ((XSTRING (string)->data[0] == ':') |
a458d45d | 2741 | && EQ (obarray, initial_obarray)) |
a0549832 RS |
2742 | XSYMBOL (sym)->value = sym; |
2743 | ||
078e7b4a | 2744 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2745 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2746 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2747 | else | |
2748 | XSYMBOL (sym)->next = 0; | |
2749 | *ptr = sym; | |
2750 | return sym; | |
2751 | } | |
2752 | ||
2753 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
2754 | "Return the canonical symbol whose name is STRING, or nil if none exists.\n\ | |
2755 | A second optional argument specifies the obarray to use;\n\ | |
2756 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2757 | (string, obarray) |
2758 | Lisp_Object string, obarray; | |
078e7b4a JB |
2759 | { |
2760 | register Lisp_Object tem; | |
2761 | ||
265a9e55 | 2762 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2763 | obarray = check_obarray (obarray); |
2764 | ||
9391b698 | 2765 | CHECK_STRING (string, 0); |
078e7b4a | 2766 | |
e28552a4 RS |
2767 | tem = oblookup (obarray, XSTRING (string)->data, |
2768 | XSTRING (string)->size, | |
fc932ac6 | 2769 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2770 | if (!INTEGERP (tem)) |
078e7b4a JB |
2771 | return tem; |
2772 | return Qnil; | |
2773 | } | |
d007f5c8 RS |
2774 | \f |
2775 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2776 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2777 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2778 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2779 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2780 | OBARRAY defaults to the value of the variable `obarray'.") | |
2781 | (name, obarray) | |
2782 | Lisp_Object name, obarray; | |
2783 | { | |
2784 | register Lisp_Object string, tem; | |
2785 | int hash; | |
2786 | ||
2787 | if (NILP (obarray)) obarray = Vobarray; | |
2788 | obarray = check_obarray (obarray); | |
2789 | ||
2790 | if (SYMBOLP (name)) | |
2791 | XSETSTRING (string, XSYMBOL (name)->name); | |
2792 | else | |
2793 | { | |
2794 | CHECK_STRING (name, 0); | |
2795 | string = name; | |
2796 | } | |
2797 | ||
e28552a4 RS |
2798 | tem = oblookup (obarray, XSTRING (string)->data, |
2799 | XSTRING (string)->size, | |
fc932ac6 | 2800 | STRING_BYTES (XSTRING (string))); |
d007f5c8 RS |
2801 | if (INTEGERP (tem)) |
2802 | return Qnil; | |
2803 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2804 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2805 | return Qnil; | |
2806 | ||
ca69c42f RS |
2807 | XSYMBOL (tem)->obarray = Qnil; |
2808 | ||
d007f5c8 RS |
2809 | hash = oblookup_last_bucket_number; |
2810 | ||
2811 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2812 | { |
2813 | if (XSYMBOL (tem)->next) | |
2814 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2815 | else | |
2816 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2817 | } | |
d007f5c8 RS |
2818 | else |
2819 | { | |
2820 | Lisp_Object tail, following; | |
2821 | ||
2822 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2823 | XSYMBOL (tail)->next; | |
2824 | tail = following) | |
2825 | { | |
2826 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2827 | if (EQ (following, tem)) | |
2828 | { | |
2829 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2830 | break; | |
2831 | } | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | return Qt; | |
2836 | } | |
2837 | \f | |
2838 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
2839 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
2840 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
2841 | |
2842 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
2843 | |
2844 | Lisp_Object | |
e28552a4 | 2845 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
2846 | Lisp_Object obarray; |
2847 | register char *ptr; | |
e28552a4 | 2848 | int size, size_byte; |
078e7b4a | 2849 | { |
7a70b397 RS |
2850 | int hash; |
2851 | int obsize; | |
078e7b4a JB |
2852 | register Lisp_Object tail; |
2853 | Lisp_Object bucket, tem; | |
2854 | ||
cfff016d | 2855 | if (!VECTORP (obarray) |
7c79a684 | 2856 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
2857 | { |
2858 | obarray = check_obarray (obarray); | |
2859 | obsize = XVECTOR (obarray)->size; | |
2860 | } | |
519418b3 RS |
2861 | /* This is sometimes needed in the middle of GC. */ |
2862 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 2863 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 2864 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
2865 | hash %= obsize; |
2866 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 2867 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
2868 | if (XFASTINT (bucket) == 0) |
2869 | ; | |
cfff016d | 2870 | else if (!SYMBOLP (bucket)) |
078e7b4a | 2871 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
2872 | else |
2873 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 2874 | { |
fc932ac6 | 2875 | if (STRING_BYTES (XSYMBOL (tail)->name) == size_byte |
e28552a4 RS |
2876 | && XSYMBOL (tail)->name->size == size |
2877 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
2878 | return tail; |
2879 | else if (XSYMBOL (tail)->next == 0) | |
2880 | break; | |
2881 | } | |
1805de4f | 2882 | XSETINT (tem, hash); |
078e7b4a JB |
2883 | return tem; |
2884 | } | |
2885 | ||
2886 | static int | |
2887 | hash_string (ptr, len) | |
2888 | unsigned char *ptr; | |
2889 | int len; | |
2890 | { | |
2891 | register unsigned char *p = ptr; | |
2892 | register unsigned char *end = p + len; | |
2893 | register unsigned char c; | |
2894 | register int hash = 0; | |
2895 | ||
2896 | while (p != end) | |
2897 | { | |
2898 | c = *p++; | |
2899 | if (c >= 0140) c -= 40; | |
2900 | hash = ((hash<<3) + (hash>>28) + c); | |
2901 | } | |
2902 | return hash & 07777777777; | |
2903 | } | |
d007f5c8 | 2904 | \f |
078e7b4a JB |
2905 | void |
2906 | map_obarray (obarray, fn, arg) | |
2907 | Lisp_Object obarray; | |
d5b28a9d | 2908 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
2909 | Lisp_Object arg; |
2910 | { | |
2911 | register int i; | |
2912 | register Lisp_Object tail; | |
2913 | CHECK_VECTOR (obarray, 1); | |
2914 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
2915 | { | |
2916 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 2917 | if (SYMBOLP (tail)) |
078e7b4a JB |
2918 | while (1) |
2919 | { | |
2920 | (*fn) (tail, arg); | |
2921 | if (XSYMBOL (tail)->next == 0) | |
2922 | break; | |
1805de4f | 2923 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
2924 | } |
2925 | } | |
2926 | } | |
2927 | ||
d5b28a9d | 2928 | void |
078e7b4a JB |
2929 | mapatoms_1 (sym, function) |
2930 | Lisp_Object sym, function; | |
2931 | { | |
2932 | call1 (function, sym); | |
2933 | } | |
2934 | ||
2935 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
2936 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
2937 | OBARRAY defaults to the value of `obarray'.") | |
2938 | (function, obarray) | |
2939 | Lisp_Object function, obarray; | |
2940 | { | |
2941 | Lisp_Object tem; | |
2942 | ||
265a9e55 | 2943 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2944 | obarray = check_obarray (obarray); |
2945 | ||
2946 | map_obarray (obarray, mapatoms_1, function); | |
2947 | return Qnil; | |
2948 | } | |
2949 | ||
5e88a39e | 2950 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
2951 | |
2952 | void | |
2953 | init_obarray () | |
2954 | { | |
2955 | Lisp_Object oblength; | |
2956 | int hash; | |
2957 | Lisp_Object *tem; | |
2958 | ||
baf69866 | 2959 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 2960 | |
491f16a2 | 2961 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
2962 | Vobarray = Fmake_vector (oblength, make_number (0)); |
2963 | initial_obarray = Vobarray; | |
2964 | staticpro (&initial_obarray); | |
2965 | /* Intern nil in the obarray */ | |
4ad679f9 | 2966 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
2967 | /* These locals are to kludge around a pyramid compiler bug. */ |
2968 | hash = hash_string ("nil", 3); | |
2969 | /* Separate statement here to avoid VAXC bug. */ | |
2970 | hash %= OBARRAY_SIZE; | |
2971 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
2972 | *tem = Qnil; | |
2973 | ||
491f16a2 | 2974 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
2975 | XSYMBOL (Qnil)->function = Qunbound; |
2976 | XSYMBOL (Qunbound)->value = Qunbound; | |
2977 | XSYMBOL (Qunbound)->function = Qunbound; | |
2978 | ||
2979 | Qt = intern ("t"); | |
2980 | XSYMBOL (Qnil)->value = Qnil; | |
2981 | XSYMBOL (Qnil)->plist = Qnil; | |
2982 | XSYMBOL (Qt)->value = Qt; | |
2983 | ||
2984 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
2985 | Vpurify_flag = Qt; | |
2986 | ||
2987 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 2988 | staticpro (&Qvariable_documentation); |
078e7b4a | 2989 | |
bed23cb2 | 2990 | read_buffer_size = 100 + MAX_LENGTH_OF_MULTI_BYTE_FORM; |
078e7b4a JB |
2991 | read_buffer = (char *) malloc (read_buffer_size); |
2992 | } | |
2993 | \f | |
2994 | void | |
2995 | defsubr (sname) | |
2996 | struct Lisp_Subr *sname; | |
2997 | { | |
2998 | Lisp_Object sym; | |
2999 | sym = intern (sname->symbol_name); | |
1805de4f | 3000 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3001 | } |
3002 | ||
3003 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3004 | void | |
3005 | defalias (sname, string) | |
3006 | struct Lisp_Subr *sname; | |
3007 | char *string; | |
3008 | { | |
3009 | Lisp_Object sym; | |
3010 | sym = intern (string); | |
1805de4f | 3011 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3012 | } |
3013 | #endif /* NOTDEF */ | |
3014 | ||
078e7b4a | 3015 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3016 | to a C variable of type int. Sample call: */ |
950c215d | 3017 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3018 | void |
e9e00ff2 | 3019 | defvar_int (namestring, address) |
078e7b4a JB |
3020 | char *namestring; |
3021 | int *address; | |
078e7b4a | 3022 | { |
1a0f90f7 | 3023 | Lisp_Object sym, val; |
078e7b4a | 3024 | sym = intern (namestring); |
1a0f90f7 | 3025 | val = allocate_misc (); |
47e28b2c | 3026 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3027 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 3028 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3029 | } |
3030 | ||
3031 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 3032 | NIL if address contains 0 */ |
078e7b4a | 3033 | void |
e9e00ff2 | 3034 | defvar_bool (namestring, address) |
078e7b4a JB |
3035 | char *namestring; |
3036 | int *address; | |
078e7b4a | 3037 | { |
1a0f90f7 | 3038 | Lisp_Object sym, val; |
078e7b4a | 3039 | sym = intern (namestring); |
1a0f90f7 | 3040 | val = allocate_misc (); |
47e28b2c | 3041 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3042 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 3043 | XSYMBOL (sym)->value = val; |
1ffcc3b1 | 3044 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3045 | } |
3046 | ||
1a0f90f7 KH |
3047 | /* Similar but define a variable whose value is the Lisp Object stored |
3048 | at address. Two versions: with and without gc-marking of the C | |
3049 | variable. The nopro version is used when that variable will be | |
3050 | gc-marked for some other reason, since marking the same slot twice | |
3051 | can cause trouble with strings. */ | |
078e7b4a | 3052 | void |
1a0f90f7 | 3053 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3054 | char *namestring; |
3055 | Lisp_Object *address; | |
078e7b4a | 3056 | { |
1a0f90f7 | 3057 | Lisp_Object sym, val; |
078e7b4a | 3058 | sym = intern (namestring); |
1a0f90f7 | 3059 | val = allocate_misc (); |
47e28b2c | 3060 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3061 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 3062 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3063 | } |
3064 | ||
078e7b4a | 3065 | void |
1a0f90f7 | 3066 | defvar_lisp (namestring, address) |
078e7b4a JB |
3067 | char *namestring; |
3068 | Lisp_Object *address; | |
078e7b4a | 3069 | { |
1a0f90f7 KH |
3070 | defvar_lisp_nopro (namestring, address); |
3071 | staticpro (address); | |
078e7b4a JB |
3072 | } |
3073 | ||
3074 | #ifndef standalone | |
3075 | ||
3076 | /* Similar but define a variable whose value is the Lisp Object stored in | |
2836d9a4 KH |
3077 | the current buffer. address is the address of the slot in the buffer |
3078 | that is current now. */ | |
078e7b4a JB |
3079 | |
3080 | void | |
4360b0c6 | 3081 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3082 | char *namestring; |
3083 | Lisp_Object *address; | |
4360b0c6 | 3084 | Lisp_Object type; |
078e7b4a JB |
3085 | char *doc; |
3086 | { | |
1a0f90f7 | 3087 | Lisp_Object sym, val; |
078e7b4a JB |
3088 | int offset; |
3089 | extern struct buffer buffer_local_symbols; | |
3090 | ||
3091 | sym = intern (namestring); | |
1a0f90f7 | 3092 | val = allocate_misc (); |
078e7b4a JB |
3093 | offset = (char *)address - (char *)current_buffer; |
3094 | ||
47e28b2c | 3095 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3096 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 3097 | XSYMBOL (sym)->value = val; |
078e7b4a | 3098 | *(Lisp_Object *)(offset + (char *)&buffer_local_symbols) = sym; |
4360b0c6 | 3099 | *(Lisp_Object *)(offset + (char *)&buffer_local_types) = type; |
2836d9a4 | 3100 | if (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)) == 0) |
078e7b4a JB |
3101 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3102 | slot of buffer_local_flags */ | |
3103 | abort (); | |
3104 | } | |
3105 | ||
3106 | #endif /* standalone */ | |
950c215d KH |
3107 | |
3108 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3109 | at a particular offset in the current kboard object. */ |
950c215d KH |
3110 | |
3111 | void | |
4ac38690 | 3112 | defvar_kboard (namestring, offset) |
950c215d KH |
3113 | char *namestring; |
3114 | int offset; | |
3115 | { | |
3116 | Lisp_Object sym, val; | |
3117 | sym = intern (namestring); | |
3118 | val = allocate_misc (); | |
47e28b2c | 3119 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3120 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
3121 | XSYMBOL (sym)->value = val; |
3122 | } | |
078e7b4a | 3123 | \f |
11938f10 KH |
3124 | /* Record the value of load-path used at the start of dumping |
3125 | so we can see if the site changed it later during dumping. */ | |
3126 | static Lisp_Object dump_path; | |
3127 | ||
d5b28a9d | 3128 | void |
279499f0 | 3129 | init_lread () |
078e7b4a | 3130 | { |
46947372 | 3131 | char *normal; |
e73997a1 | 3132 | int turn_off_warning = 0; |
078e7b4a | 3133 | |
9dff7c53 RS |
3134 | #ifdef HAVE_SETLOCALE |
3135 | /* Make sure numbers are parsed as we expect. */ | |
3136 | setlocale (LC_NUMERIC, "C"); | |
3137 | #endif /* HAVE_SETLOCALE */ | |
3138 | ||
279499f0 | 3139 | /* Compute the default load-path. */ |
46947372 JB |
3140 | #ifdef CANNOT_DUMP |
3141 | normal = PATH_LOADSEARCH; | |
e065a56e | 3142 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3143 | #else |
3144 | if (NILP (Vpurify_flag)) | |
3145 | normal = PATH_LOADSEARCH; | |
279499f0 | 3146 | else |
46947372 | 3147 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3148 | |
46947372 JB |
3149 | /* In a dumped Emacs, we normally have to reset the value of |
3150 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3151 | uses ../lisp, instead of the path of the installed elisp | |
3152 | libraries. However, if it appears that Vload_path was changed | |
3153 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3154 | if (initialized) |
3155 | { | |
4746118a | 3156 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3157 | { |
3158 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3159 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3160 | { |
74180aa4 | 3161 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
3162 | installation dir, if it exists. */ |
3163 | Lisp_Object tem, tem1; | |
74180aa4 RS |
3164 | tem = Fexpand_file_name (build_string ("lisp"), |
3165 | Vinstallation_directory); | |
3a3056e5 RS |
3166 | tem1 = Ffile_exists_p (tem); |
3167 | if (!NILP (tem1)) | |
3168 | { | |
3169 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3170 | { |
3171 | turn_off_warning = 1; | |
3172 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3173 | } | |
3a3056e5 RS |
3174 | } |
3175 | else | |
3176 | /* That dir doesn't exist, so add the build-time | |
3177 | Lisp dirs instead. */ | |
3178 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3179 | |
9fbc0116 RS |
3180 | /* Add leim under the installation dir, if it exists. */ |
3181 | tem = Fexpand_file_name (build_string ("leim"), | |
3182 | Vinstallation_directory); | |
3183 | tem1 = Ffile_exists_p (tem); | |
3184 | if (!NILP (tem1)) | |
3185 | { | |
3186 | if (NILP (Fmember (tem, Vload_path))) | |
3187 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3188 | } | |
3189 | ||
c478f98c RS |
3190 | /* Add site-list under the installation dir, if it exists. */ |
3191 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3192 | Vinstallation_directory); | |
3193 | tem1 = Ffile_exists_p (tem); | |
3194 | if (!NILP (tem1)) | |
3195 | { | |
3196 | if (NILP (Fmember (tem, Vload_path))) | |
3197 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3198 | } | |
0f337465 RS |
3199 | |
3200 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3201 | and it is run from where it was built, add to load-path |
3202 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3203 | |
3204 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3205 | { | |
33046fc9 RS |
3206 | Lisp_Object tem2; |
3207 | ||
0f337465 RS |
3208 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3209 | Vinstallation_directory); | |
3210 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3211 | |
3212 | /* Don't be fooled if they moved the entire source tree | |
3213 | AFTER dumping Emacs. If the build directory is indeed | |
3214 | different from the source dir, src/Makefile.in and | |
3215 | src/Makefile will not be found together. */ | |
3216 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3217 | Vinstallation_directory); | |
3218 | tem2 = Ffile_exists_p (tem); | |
3219 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3220 | { |
3221 | tem = Fexpand_file_name (build_string ("lisp"), | |
3222 | Vsource_directory); | |
3223 | ||
3224 | if (NILP (Fmember (tem, Vload_path))) | |
3225 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3226 | ||
9fbc0116 RS |
3227 | tem = Fexpand_file_name (build_string ("leim"), |
3228 | Vsource_directory); | |
3229 | ||
3230 | if (NILP (Fmember (tem, Vload_path))) | |
3231 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3232 | ||
0f337465 RS |
3233 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3234 | Vsource_directory); | |
3235 | ||
3236 | if (NILP (Fmember (tem, Vload_path))) | |
3237 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3238 | } | |
3239 | } | |
80667d53 RS |
3240 | } |
3241 | } | |
4746118a JB |
3242 | } |
3243 | else | |
11938f10 | 3244 | { |
7b396c6c RS |
3245 | /* NORMAL refers to the lisp dir in the source directory. */ |
3246 | /* We used to add ../lisp at the front here, but | |
3247 | that caused trouble because it was copied from dump_path | |
3248 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3249 | It should be unnecessary. */ | |
3250 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3251 | dump_path = Vload_path; |
3252 | } | |
46947372 | 3253 | #endif |
279499f0 | 3254 | |
317073d5 RS |
3255 | #ifndef WINDOWSNT |
3256 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
3257 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3258 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
3259 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
3260 | ||
078e7b4a | 3261 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3262 | if (!turn_off_warning) |
3263 | { | |
3264 | Lisp_Object path_tail; | |
078e7b4a | 3265 | |
e73997a1 RS |
3266 | for (path_tail = Vload_path; |
3267 | !NILP (path_tail); | |
3268 | path_tail = XCONS (path_tail)->cdr) | |
3269 | { | |
3270 | Lisp_Object dirfile; | |
3271 | dirfile = Fcar (path_tail); | |
3272 | if (STRINGP (dirfile)) | |
3273 | { | |
3274 | dirfile = Fdirectory_file_name (dirfile); | |
3275 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c RS |
3276 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
3277 | XCONS (path_tail)->car); | |
e73997a1 RS |
3278 | } |
3279 | } | |
3280 | } | |
317073d5 | 3281 | #endif /* WINDOWSNT */ |
46947372 JB |
3282 | |
3283 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3284 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3285 | #ifndef CANNOT_DUMP |
46947372 JB |
3286 | if (NILP (Vpurify_flag) |
3287 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3288 | #endif |
279499f0 | 3289 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3290 | |
3291 | Vvalues = Qnil; | |
3292 | ||
078e7b4a | 3293 | load_in_progress = 0; |
4e53f562 | 3294 | Vload_file_name = Qnil; |
d2c6be7f RS |
3295 | |
3296 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3297 | |
3298 | Vstandard_input = Qt; | |
078e7b4a JB |
3299 | } |
3300 | ||
85496b8c RS |
3301 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3302 | does not exist. Print it on stderr and put it in *Message*. */ | |
3303 | ||
d5b28a9d | 3304 | void |
85496b8c RS |
3305 | dir_warning (format, dirname) |
3306 | char *format; | |
3307 | Lisp_Object dirname; | |
3308 | { | |
3309 | char *buffer | |
3310 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
3311 | ||
3312 | fprintf (stderr, format, XSTRING (dirname)->data); | |
3313 | sprintf (buffer, format, XSTRING (dirname)->data); | |
9b69357e GV |
3314 | /* Don't log the warning before we've initialized!! */ |
3315 | if (initialized) | |
3316 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3317 | } |
3318 | ||
078e7b4a | 3319 | void |
279499f0 | 3320 | syms_of_lread () |
078e7b4a JB |
3321 | { |
3322 | defsubr (&Sread); | |
3323 | defsubr (&Sread_from_string); | |
3324 | defsubr (&Sintern); | |
3325 | defsubr (&Sintern_soft); | |
d007f5c8 | 3326 | defsubr (&Sunintern); |
078e7b4a | 3327 | defsubr (&Sload); |
228d4b1c | 3328 | defsubr (&Seval_buffer); |
078e7b4a JB |
3329 | defsubr (&Seval_region); |
3330 | defsubr (&Sread_char); | |
3331 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3332 | defsubr (&Sread_event); |
078e7b4a JB |
3333 | defsubr (&Sget_file_char); |
3334 | defsubr (&Smapatoms); | |
3335 | ||
3336 | DEFVAR_LISP ("obarray", &Vobarray, | |
3337 | "Symbol table for use by `intern' and `read'.\n\ | |
3338 | It is a vector whose length ought to be prime for best results.\n\ | |
3339 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
3340 | to find all the symbols in an obarray, use `mapatoms'."); | |
3341 | ||
3342 | DEFVAR_LISP ("values", &Vvalues, | |
3343 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
3344 | Order is reverse chronological."); | |
3345 | ||
3346 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
3347 | "Stream for read to get input from.\n\ | |
3348 | See documentation of `read' for possible values."); | |
3349 | Vstandard_input = Qt; | |
3350 | ||
3351 | DEFVAR_LISP ("load-path", &Vload_path, | |
3352 | "*List of directories to search for files to load.\n\ | |
3353 | Each element is a string (directory name) or nil (try default directory).\n\ | |
3354 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
57bda87a | 3355 | otherwise to default specified by file `epaths.h' when Emacs was built."); |
078e7b4a JB |
3356 | |
3357 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
3358 | "Non-nil iff inside of `load'."); | |
3359 | ||
3360 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
3361 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
3362 | Each element looks like (FILENAME FORMS...).\n\ | |
3363 | When `load' is run and the file-name argument is FILENAME,\n\ | |
3364 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
3365 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
3366 | with no directory specified, since that is how `load' is normally called.\n\ | |
3367 | An error in FORMS does not undo the load,\n\ | |
3368 | but does prevent execution of the rest of the FORMS."); | |
3369 | Vafter_load_alist = Qnil; | |
3370 | ||
ae321d28 RS |
3371 | DEFVAR_LISP ("load-history", &Vload_history, |
3372 | "Alist mapping source file names to symbols and features.\n\ | |
3373 | Each alist element is a list that starts with a file name,\n\ | |
3374 | except for one element (optional) that starts with nil and describes\n\ | |
3375 | definitions evaluated from buffers not visiting files.\n\ | |
3376 | The remaining elements of each list are symbols defined as functions\n\ | |
3377 | or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'."); | |
3378 | Vload_history = Qnil; | |
3379 | ||
20ea2964 RS |
3380 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
3381 | "Full name of file being loaded by `load'."); | |
3382 | Vload_file_name = Qnil; | |
3383 | ||
4116ab9f KH |
3384 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
3385 | "File name, including directory, of user's initialization file."); | |
3386 | Vuser_init_file = Qnil; | |
3387 | ||
8a1f1537 RS |
3388 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
3389 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
3390 | Vcurrent_load_list = Qnil; |
3391 | ||
84a15045 RS |
3392 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
3393 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
3394 | The default is nil, which means use the function `read'."); | |
3395 | Vload_read_function = Qnil; | |
3396 | ||
fe0e03f3 KH |
3397 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
3398 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
3399 | This function is for doing code conversion before reading the source file.\n\ | |
3400 | If nil, loading is done without any code conversion.\n\ | |
3401 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
3402 | FULLNAME is the full name of FILE.\n\ | |
3403 | See `load' for the meaning of the remaining arguments."); | |
3404 | Vload_source_file_function = Qnil; | |
3405 | ||
b2a30870 RS |
3406 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
3407 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
3408 | This is useful when the file being loaded is a temporary copy."); | |
3409 | load_force_doc_strings = 0; | |
3410 | ||
94e554db RS |
3411 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
3412 | "Non-nil means `load' converts strings to unibyte whenever possible.\n\ | |
3413 | This is normally used in `load-with-code-conversion'\n\ | |
3414 | for loading non-compiled files."); | |
3415 | load_convert_to_unibyte = 0; | |
3416 | ||
1521a8fa RS |
3417 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
3418 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
3419 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
3420 | Vsource_directory |
3421 | = Fexpand_file_name (build_string ("../"), | |
3422 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3423 | ||
4b104c41 RS |
3424 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
3425 | "List of files that were preloaded (when dumping Emacs)."); | |
3426 | Vpreloaded_file_list = Qnil; | |
3427 | ||
1ffcc3b1 DL |
3428 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
3429 | "List of all DEFVAR_BOOL variables, used by the byte code optimizer."); | |
3430 | Vbyte_boolean_vars = Qnil; | |
3431 | ||
a90ba1e2 KH |
3432 | /* Vsource_directory was initialized in init_lread. */ |
3433 | ||
d2c6be7f RS |
3434 | load_descriptor_list = Qnil; |
3435 | staticpro (&load_descriptor_list); | |
3436 | ||
8a1f1537 RS |
3437 | Qcurrent_load_list = intern ("current-load-list"); |
3438 | staticpro (&Qcurrent_load_list); | |
3439 | ||
078e7b4a JB |
3440 | Qstandard_input = intern ("standard-input"); |
3441 | staticpro (&Qstandard_input); | |
3442 | ||
3443 | Qread_char = intern ("read-char"); | |
3444 | staticpro (&Qread_char); | |
3445 | ||
3446 | Qget_file_char = intern ("get-file-char"); | |
3447 | staticpro (&Qget_file_char); | |
7bd279cd | 3448 | |
17634846 RS |
3449 | Qbackquote = intern ("`"); |
3450 | staticpro (&Qbackquote); | |
3451 | Qcomma = intern (","); | |
3452 | staticpro (&Qcomma); | |
3453 | Qcomma_at = intern (",@"); | |
3454 | staticpro (&Qcomma_at); | |
3455 | Qcomma_dot = intern (",."); | |
3456 | staticpro (&Qcomma_dot); | |
3457 | ||
74549846 RS |
3458 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3459 | staticpro (&Qinhibit_file_name_operation); | |
3460 | ||
7bd279cd RS |
3461 | Qascii_character = intern ("ascii-character"); |
3462 | staticpro (&Qascii_character); | |
c2225d00 | 3463 | |
2b6cae0c RS |
3464 | Qfunction = intern ("function"); |
3465 | staticpro (&Qfunction); | |
3466 | ||
c2225d00 RS |
3467 | Qload = intern ("load"); |
3468 | staticpro (&Qload); | |
20ea2964 RS |
3469 | |
3470 | Qload_file_name = intern ("load-file-name"); | |
3471 | staticpro (&Qload_file_name); | |
11938f10 KH |
3472 | |
3473 | staticpro (&dump_path); | |
4ad679f9 EN |
3474 | |
3475 | staticpro (&read_objects); | |
3476 | read_objects = Qnil; | |
9e062b6c RS |
3477 | staticpro (&seen_list); |
3478 | ||
078e7b4a | 3479 | } |