Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
33046fc9 RS |
2 | Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 1997 |
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" |
2a6b3537 | 34 | #include <paths.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 | ||
078e7b4a JB |
51 | #ifndef X_OK |
52 | #define X_OK 01 | |
53 | #endif | |
54 | ||
55 | #ifdef LISP_FLOAT_TYPE | |
93b91208 JB |
56 | #ifdef STDC_HEADERS |
57 | #include <stdlib.h> | |
58 | #endif | |
23a71bd6 | 59 | |
078e7b4a JB |
60 | #include <math.h> |
61 | #endif /* LISP_FLOAT_TYPE */ | |
62 | ||
c011e9a5 RS |
63 | #ifdef HAVE_SETLOCALE |
64 | #include <locale.h> | |
65 | #endif /* HAVE_SETLOCALE */ | |
66 | ||
f7d279f0 RS |
67 | #ifndef O_RDONLY |
68 | #define O_RDONLY 0 | |
69 | #endif | |
70 | ||
2c1b5dbe KH |
71 | extern int errno; |
72 | ||
8a1f1537 | 73 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 74 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 75 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 76 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 77 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
78 | |
79 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 80 | extern Lisp_Object Qfile_exists_p; |
078e7b4a JB |
81 | |
82 | /* non-zero if inside `load' */ | |
83 | int load_in_progress; | |
84 | ||
1521a8fa RS |
85 | /* Directory in which the sources were found. */ |
86 | Lisp_Object Vsource_directory; | |
87 | ||
078e7b4a JB |
88 | /* Search path for files to be loaded. */ |
89 | Lisp_Object Vload_path; | |
90 | ||
ae321d28 RS |
91 | /* This is the user-visible association list that maps features to |
92 | lists of defs in their load files. */ | |
93 | Lisp_Object Vload_history; | |
94 | ||
20ea2964 | 95 | /* This is used to build the load history. */ |
ae321d28 RS |
96 | Lisp_Object Vcurrent_load_list; |
97 | ||
4b104c41 RS |
98 | /* List of files that were preloaded. */ |
99 | Lisp_Object Vpreloaded_file_list; | |
100 | ||
20ea2964 RS |
101 | /* Name of file actually being read by `load'. */ |
102 | Lisp_Object Vload_file_name; | |
103 | ||
84a15045 RS |
104 | /* Function to use for reading, in `load' and friends. */ |
105 | Lisp_Object Vload_read_function; | |
106 | ||
4ad679f9 EN |
107 | /* The association list of objects read with the #n=object form. |
108 | Each member of the list has the form (n . object), and is used to | |
109 | look up the object for the corresponding #n# construct. | |
110 | It must be set to nil before all top-level calls to read0. */ | |
111 | Lisp_Object read_objects; | |
112 | ||
b2a30870 RS |
113 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
114 | static int load_force_doc_strings; | |
115 | ||
fe0e03f3 KH |
116 | /* Function to use for loading an Emacs lisp source file (not |
117 | compiled) instead of readevalloop. */ | |
118 | Lisp_Object Vload_source_file_function; | |
119 | ||
d2c6be7f RS |
120 | /* List of descriptors now open for Fload. */ |
121 | static Lisp_Object load_descriptor_list; | |
122 | ||
b2a30870 | 123 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
124 | static FILE *instream; |
125 | ||
126 | /* When nonzero, read conses in pure space */ | |
127 | static int read_pure; | |
128 | ||
b2a30870 | 129 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a JB |
130 | static int read_from_string_index; |
131 | static int read_from_string_limit; | |
17634846 | 132 | |
6f7f43d5 RS |
133 | /* Number of bytes left to read in the buffer character |
134 | that `readchar' has already advanced over. */ | |
135 | static int readchar_backlog; | |
136 | ||
d49f0c1a KH |
137 | /* This contains the last string skipped with #@, but only on some systems. |
138 | On other systems we can't put the string here. */ | |
b2a30870 RS |
139 | static char *saved_doc_string; |
140 | /* Length of buffer allocated in saved_doc_string. */ | |
141 | static int saved_doc_string_size; | |
142 | /* Length of actual data in saved_doc_string. */ | |
143 | static int saved_doc_string_length; | |
144 | /* This is the file position that string came from. */ | |
145 | static int saved_doc_string_position; | |
146 | ||
17634846 RS |
147 | /* Nonzero means inside a new-style backquote |
148 | with no surrounding parentheses. | |
149 | Fread initializes this to zero, so we need not specbind it | |
150 | or worry about what happens to it when there is an error. */ | |
151 | static int new_backquote_flag; | |
078e7b4a JB |
152 | \f |
153 | /* Handle unreading and rereading of characters. | |
154 | Write READCHAR to read a character, | |
fe0e03f3 KH |
155 | UNREAD(c) to unread c to be read again. |
156 | ||
157 | These macros actually read/unread a byte code, multibyte characters | |
158 | are not handled here. The caller should manage them if necessary. | |
159 | */ | |
078e7b4a JB |
160 | |
161 | #define READCHAR readchar (readcharfun) | |
162 | #define UNREAD(c) unreadchar (readcharfun, c) | |
163 | ||
164 | static int | |
165 | readchar (readcharfun) | |
166 | Lisp_Object readcharfun; | |
167 | { | |
168 | Lisp_Object tem; | |
169 | register struct buffer *inbuffer; | |
170 | register int c, mpos; | |
171 | ||
cfff016d | 172 | if (BUFFERP (readcharfun)) |
078e7b4a JB |
173 | { |
174 | inbuffer = XBUFFER (readcharfun); | |
175 | ||
6f7f43d5 RS |
176 | if (readchar_backlog == 0) |
177 | { | |
178 | int pt_byte = BUF_PT_BYTE (inbuffer); | |
179 | int orig_pt_byte = pt_byte; | |
180 | ||
181 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) | |
182 | return -1; | |
078e7b4a | 183 | |
6f7f43d5 RS |
184 | if (! NILP (inbuffer->enable_multibyte_characters)) |
185 | BUF_INC_POS (inbuffer, pt_byte); | |
186 | else | |
187 | pt_byte++; | |
188 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); | |
189 | readchar_backlog = pt_byte - orig_pt_byte; | |
190 | } | |
191 | ||
192 | /* We get the address of the byte just passed, | |
193 | which is the last byte of the character. | |
194 | The other bytes in this character are consecutive with it, | |
195 | because the gap can't be in the middle of a character. */ | |
196 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
197 | - --readchar_backlog); | |
078e7b4a | 198 | } |
cfff016d | 199 | if (MARKERP (readcharfun)) |
078e7b4a JB |
200 | { |
201 | inbuffer = XMARKER (readcharfun)->buffer; | |
202 | ||
6f7f43d5 RS |
203 | if (readchar_backlog == 0) |
204 | { | |
205 | int bytepos = marker_byte_position (readcharfun); | |
206 | int orig_bytepos = bytepos; | |
078e7b4a | 207 | |
6f7f43d5 RS |
208 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
209 | return -1; | |
210 | ||
6f7f43d5 RS |
211 | if (! NILP (inbuffer->enable_multibyte_characters)) |
212 | INC_POS (bytepos); | |
213 | else | |
214 | bytepos++; | |
a3123c13 | 215 | XMARKER (readcharfun)->bytepos = bytepos; |
6f7f43d5 RS |
216 | XMARKER (readcharfun)->charpos++; |
217 | ||
218 | readchar_backlog = bytepos - orig_bytepos; | |
219 | } | |
220 | ||
a3123c13 | 221 | return *(BUF_BEG_ADDR (inbuffer) + XMARKER (readcharfun)->bytepos |
6f7f43d5 | 222 | - readchar_backlog--); |
078e7b4a JB |
223 | } |
224 | if (EQ (readcharfun, Qget_file_char)) | |
2c1b5dbe KH |
225 | { |
226 | c = getc (instream); | |
227 | #ifdef EINTR | |
228 | /* Interrupted reads have been observed while reading over the network */ | |
229 | while (c == EOF && ferror (instream) && errno == EINTR) | |
230 | { | |
231 | clearerr (instream); | |
232 | c = getc (instream); | |
233 | } | |
234 | #endif | |
235 | return c; | |
236 | } | |
078e7b4a | 237 | |
cfff016d | 238 | if (STRINGP (readcharfun)) |
078e7b4a JB |
239 | { |
240 | register int c; | |
241 | /* This used to be return of a conditional expression, | |
242 | but that truncated -1 to a char on VMS. */ | |
243 | if (read_from_string_index < read_from_string_limit) | |
244 | c = XSTRING (readcharfun)->data[read_from_string_index++]; | |
245 | else | |
246 | c = -1; | |
6f7f43d5 | 247 | |
078e7b4a JB |
248 | return c; |
249 | } | |
250 | ||
251 | tem = call0 (readcharfun); | |
252 | ||
265a9e55 | 253 | if (NILP (tem)) |
078e7b4a JB |
254 | return -1; |
255 | return XINT (tem); | |
256 | } | |
257 | ||
258 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
259 | If the stream is a user function, call it with the char as argument. */ | |
260 | ||
261 | static void | |
262 | unreadchar (readcharfun, c) | |
263 | Lisp_Object readcharfun; | |
264 | int c; | |
265 | { | |
92fddec9 KH |
266 | if (c == -1) |
267 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
268 | since readchar didn't advance it when we read it. */ | |
269 | ; | |
cfff016d | 270 | else if (BUFFERP (readcharfun)) |
6f7f43d5 | 271 | readchar_backlog++; |
cfff016d | 272 | else if (MARKERP (readcharfun)) |
6f7f43d5 | 273 | readchar_backlog++; |
cfff016d | 274 | else if (STRINGP (readcharfun)) |
078e7b4a JB |
275 | read_from_string_index--; |
276 | else if (EQ (readcharfun, Qget_file_char)) | |
277 | ungetc (c, instream); | |
278 | else | |
279 | call1 (readcharfun, make_number (c)); | |
280 | } | |
281 | ||
282 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 283 | static int read_multibyte (); |
078e7b4a JB |
284 | \f |
285 | /* get a character from the tty */ | |
286 | ||
3d9b22be JB |
287 | extern Lisp_Object read_char (); |
288 | ||
f42be754 JB |
289 | /* Read input events until we get one that's acceptable for our purposes. |
290 | ||
291 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
292 | until we get a character we like, and then stuffed into | |
293 | unread_switch_frame. | |
294 | ||
295 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
296 | if the unmodified version of the symbol has a Qascii_character | |
297 | property, and use that character, if present. | |
298 | ||
299 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
300 | get isn't an ASCII character with modifiers. If it's zero but | |
301 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
302 | character. */ | |
cc39bc38 | 303 | |
f42be754 JB |
304 | Lisp_Object |
305 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii) | |
306 | int no_switch_frame, ascii_required, error_nonascii; | |
307 | { | |
308 | #ifdef standalone | |
309 | return make_number (getchar ()); | |
310 | #else | |
153a17b7 KH |
311 | register Lisp_Object val, delayed_switch_frame; |
312 | ||
313 | delayed_switch_frame = Qnil; | |
f42be754 JB |
314 | |
315 | /* Read until we get an acceptable event. */ | |
316 | retry: | |
317 | val = read_char (0, 0, 0, Qnil, 0); | |
318 | ||
cfff016d | 319 | if (BUFFERP (val)) |
6c82d689 KH |
320 | goto retry; |
321 | ||
f42be754 | 322 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 323 | character. This is better than signaling an error just because |
f42be754 JB |
324 | the last characters were typed to a separate minibuffer frame, |
325 | for example. Eventually, some code which can deal with | |
326 | switch-frame events will read it and process it. */ | |
327 | if (no_switch_frame | |
328 | && EVENT_HAS_PARAMETERS (val) | |
329 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
330 | { | |
331 | delayed_switch_frame = val; | |
332 | goto retry; | |
333 | } | |
334 | ||
335 | if (ascii_required) | |
336 | { | |
337 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 338 | if (SYMBOLP (val)) |
f42be754 JB |
339 | { |
340 | Lisp_Object tem, tem1, tem2; | |
341 | tem = Fget (val, Qevent_symbol_element_mask); | |
342 | if (!NILP (tem)) | |
343 | { | |
344 | tem1 = Fget (Fcar (tem), Qascii_character); | |
345 | /* Merge this symbol's modifier bits | |
346 | with the ASCII equivalent of its basic code. */ | |
347 | if (!NILP (tem1)) | |
baf69866 | 348 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
349 | } |
350 | } | |
351 | ||
352 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 353 | if (!INTEGERP (val)) |
f42be754 JB |
354 | { |
355 | if (error_nonascii) | |
356 | { | |
1ec84625 | 357 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
358 | error ("Non-character input-event"); |
359 | } | |
360 | else | |
361 | goto retry; | |
362 | } | |
363 | } | |
364 | ||
365 | if (! NILP (delayed_switch_frame)) | |
366 | unread_switch_frame = delayed_switch_frame; | |
367 | ||
368 | return val; | |
369 | #endif | |
370 | } | |
371 | ||
078e7b4a JB |
372 | DEFUN ("read-char", Fread_char, Sread_char, 0, 0, 0, |
373 | "Read a character from the command input (keyboard or macro).\n\ | |
e51e47f7 JB |
374 | It is returned as a number.\n\ |
375 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
376 | click or function key event), `read-char' signals an error. As an\n\ |
377 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
378 | be read.\n\ | |
379 | If you want to read non-character events, or ignore them, call\n\ | |
380 | `read-event' or `read-char-exclusive' instead.") | |
078e7b4a JB |
381 | () |
382 | { | |
f42be754 | 383 | return read_filtered_event (1, 1, 1); |
078e7b4a JB |
384 | } |
385 | ||
078e7b4a JB |
386 | DEFUN ("read-event", Fread_event, Sread_event, 0, 0, 0, |
387 | "Read an event object from the input stream.") | |
388 | () | |
389 | { | |
f42be754 | 390 | return read_filtered_event (0, 0, 0); |
078e7b4a JB |
391 | } |
392 | ||
393 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 0, 0, | |
394 | "Read a character from the command input (keyboard or macro).\n\ | |
cc39bc38 | 395 | It is returned as a number. Non-character events are ignored.") |
078e7b4a JB |
396 | () |
397 | { | |
f42be754 | 398 | return read_filtered_event (1, 1, 0); |
078e7b4a | 399 | } |
078e7b4a JB |
400 | |
401 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
402 | "Don't use this yourself.") | |
403 | () | |
404 | { | |
405 | register Lisp_Object val; | |
1805de4f | 406 | XSETINT (val, getc (instream)); |
078e7b4a JB |
407 | return val; |
408 | } | |
409 | \f | |
410 | static void readevalloop (); | |
411 | static Lisp_Object load_unwind (); | |
d2c6be7f | 412 | static Lisp_Object load_descriptor_unwind (); |
078e7b4a | 413 | |
f0a50954 | 414 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
415 | "Execute a file of Lisp code named FILE.\n\ |
416 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
417 | then try FILE unmodified.\n\ | |
418 | This function searches the directories in `load-path'.\n\ | |
419 | If optional second arg NOERROR is non-nil,\n\ | |
420 | report no error if FILE doesn't exist.\n\ | |
421 | Print messages at start and end of loading unless\n\ | |
422 | optional third arg NOMESSAGE is non-nil.\n\ | |
423 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
424 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 425 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 426 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 427 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 428 | Return t if file exists.") |
f0a50954 RS |
429 | (file, noerror, nomessage, nosuffix, must_suffix) |
430 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
431 | { |
432 | register FILE *stream; | |
433 | register int fd = -1; | |
434 | register Lisp_Object lispstream; | |
078e7b4a JB |
435 | int count = specpdl_ptr - specpdl; |
436 | Lisp_Object temp; | |
437 | struct gcpro gcpro1; | |
438 | Lisp_Object found; | |
04fc68e7 RS |
439 | /* 1 means we printed the ".el is newer" message. */ |
440 | int newer = 0; | |
441 | /* 1 means we are loading a compiled file. */ | |
442 | int compiled = 0; | |
c2225d00 | 443 | Lisp_Object handler; |
317073d5 | 444 | #ifdef DOS_NT |
23a71bd6 | 445 | char *dosmode = "rt"; |
317073d5 | 446 | #endif /* DOS_NT */ |
078e7b4a | 447 | |
0745dce9 | 448 | CHECK_STRING (file, 0); |
078e7b4a | 449 | |
c2225d00 | 450 | /* If file name is magic, call the handler. */ |
0745dce9 | 451 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 452 | if (!NILP (handler)) |
0745dce9 | 453 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 454 | |
07a0bda3 RS |
455 | /* Do this after the handler to avoid |
456 | the need to gcpro noerror, nomessage and nosuffix. | |
457 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 458 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 459 | |
078e7b4a JB |
460 | /* Avoid weird lossage with null string as arg, |
461 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 462 | if (XSTRING (file)->size > 0) |
078e7b4a | 463 | { |
211f7dcd RS |
464 | int size = XSTRING (file)->size; |
465 | ||
0745dce9 | 466 | GCPRO1 (file); |
211f7dcd RS |
467 | |
468 | if (! NILP (must_suffix)) | |
469 | { | |
470 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
471 | if (size > 3 | |
472 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
473 | must_suffix = Qnil; | |
474 | else if (size > 4 | |
475 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
476 | must_suffix = Qnil; | |
477 | /* Don't insist on adding a suffix | |
478 | if the argument includes a directory name. */ | |
479 | else if (! NILP (Ffile_name_directory (file))) | |
480 | must_suffix = Qnil; | |
481 | } | |
482 | ||
f0a50954 RS |
483 | fd = openp (Vload_path, file, |
484 | (!NILP (nosuffix) ? "" | |
485 | : ! NILP (must_suffix) ? ".elc:.el" | |
486 | : ".elc:.el:"), | |
078e7b4a | 487 | &found, 0); |
5a6e5452 | 488 | UNGCPRO; |
078e7b4a JB |
489 | } |
490 | ||
491 | if (fd < 0) | |
492 | { | |
265a9e55 | 493 | if (NILP (noerror)) |
078e7b4a JB |
494 | while (1) |
495 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 496 | Fcons (file, Qnil))); |
078e7b4a JB |
497 | else |
498 | return Qnil; | |
499 | } | |
500 | ||
74549846 RS |
501 | /* If FD is 0, that means openp found a remote file. */ |
502 | if (fd == 0) | |
503 | { | |
504 | handler = Ffind_file_name_handler (found, Qload); | |
505 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
506 | } | |
507 | ||
078e7b4a JB |
508 | if (!bcmp (&(XSTRING (found)->data[XSTRING (found)->size - 4]), |
509 | ".elc", 4)) | |
510 | { | |
511 | struct stat s1, s2; | |
512 | int result; | |
513 | ||
04fc68e7 RS |
514 | compiled = 1; |
515 | ||
317073d5 | 516 | #ifdef DOS_NT |
23a71bd6 | 517 | dosmode = "rb"; |
317073d5 | 518 | #endif /* DOS_NT */ |
4ff37b08 | 519 | stat ((char *)XSTRING (found)->data, &s1); |
078e7b4a | 520 | XSTRING (found)->data[XSTRING (found)->size - 1] = 0; |
4ff37b08 | 521 | result = stat ((char *)XSTRING (found)->data, &s2); |
078e7b4a | 522 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
51ac6f83 | 523 | { |
04fc68e7 RS |
524 | /* Make the progress messages mention that source is newer. */ |
525 | newer = 1; | |
526 | ||
527 | /* If we won't print another message, mention this anyway. */ | |
528 | if (! NILP (nomessage)) | |
e28552a4 RS |
529 | message_with_string ("Source file `%s' newer than byte-compiled file", |
530 | found, 1); | |
51ac6f83 | 531 | } |
078e7b4a JB |
532 | XSTRING (found)->data[XSTRING (found)->size - 1] = 'c'; |
533 | } | |
fe0e03f3 KH |
534 | else |
535 | { | |
536 | /* We are loading a source file (*.el). */ | |
537 | if (!NILP (Vload_source_file_function)) | |
538 | { | |
539 | close (fd); | |
7075e5a5 | 540 | return call4 (Vload_source_file_function, found, file, |
fe0e03f3 KH |
541 | NILP (noerror) ? Qnil : Qt, |
542 | NILP (nomessage) ? Qnil : Qt); | |
543 | } | |
544 | } | |
078e7b4a | 545 | |
317073d5 | 546 | #ifdef DOS_NT |
23a71bd6 RS |
547 | close (fd); |
548 | stream = fopen ((char *) XSTRING (found)->data, dosmode); | |
317073d5 | 549 | #else /* not DOS_NT */ |
078e7b4a | 550 | stream = fdopen (fd, "r"); |
317073d5 | 551 | #endif /* not DOS_NT */ |
078e7b4a JB |
552 | if (stream == 0) |
553 | { | |
554 | close (fd); | |
0745dce9 | 555 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
556 | } |
557 | ||
4b104c41 RS |
558 | if (! NILP (Vpurify_flag)) |
559 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
560 | ||
04fc68e7 RS |
561 | if (NILP (nomessage)) |
562 | { | |
db5cae4b | 563 | if (!compiled) |
e28552a4 | 564 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 565 | else if (newer) |
e28552a4 RS |
566 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
567 | file, 1); | |
db5cae4b | 568 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 569 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 570 | } |
078e7b4a | 571 | |
0745dce9 | 572 | GCPRO1 (file); |
838abf56 KH |
573 | lispstream = Fcons (Qnil, Qnil); |
574 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
575 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 576 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 577 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 578 | specbind (Qload_file_name, found); |
74549846 | 579 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
580 | load_descriptor_list |
581 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 582 | load_in_progress++; |
0745dce9 | 583 | readevalloop (Qget_file_char, stream, file, Feval, 0); |
078e7b4a JB |
584 | unbind_to (count, Qnil); |
585 | ||
586 | /* Run any load-hooks for this file. */ | |
0745dce9 | 587 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 588 | if (!NILP (temp)) |
078e7b4a JB |
589 | Fprogn (Fcdr (temp)); |
590 | UNGCPRO; | |
591 | ||
b2a30870 RS |
592 | if (saved_doc_string) |
593 | free (saved_doc_string); | |
594 | saved_doc_string = 0; | |
595 | saved_doc_string_size = 0; | |
596 | ||
265a9e55 | 597 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 598 | { |
db5cae4b | 599 | if (!compiled) |
e28552a4 | 600 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 601 | else if (newer) |
e28552a4 RS |
602 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
603 | file, 1); | |
db5cae4b | 604 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 605 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 606 | } |
078e7b4a JB |
607 | return Qt; |
608 | } | |
609 | ||
610 | static Lisp_Object | |
611 | load_unwind (stream) /* used as unwind-protect function in load */ | |
612 | Lisp_Object stream; | |
613 | { | |
c8bdaa8c RS |
614 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 |
615 | | XFASTINT (XCONS (stream)->cdr))); | |
078e7b4a JB |
616 | if (--load_in_progress < 0) load_in_progress = 0; |
617 | return Qnil; | |
618 | } | |
619 | ||
d2c6be7f RS |
620 | static Lisp_Object |
621 | load_descriptor_unwind (oldlist) | |
622 | Lisp_Object oldlist; | |
623 | { | |
624 | load_descriptor_list = oldlist; | |
838abf56 | 625 | return Qnil; |
d2c6be7f RS |
626 | } |
627 | ||
628 | /* Close all descriptors in use for Floads. | |
629 | This is used when starting a subprocess. */ | |
630 | ||
631 | void | |
632 | close_load_descs () | |
633 | { | |
f3849f25 | 634 | #ifndef WINDOWSNT |
d2c6be7f RS |
635 | Lisp_Object tail; |
636 | for (tail = load_descriptor_list; !NILP (tail); tail = XCONS (tail)->cdr) | |
637 | close (XFASTINT (XCONS (tail)->car)); | |
f3849f25 | 638 | #endif |
d2c6be7f | 639 | } |
078e7b4a JB |
640 | \f |
641 | static int | |
642 | complete_filename_p (pathname) | |
643 | Lisp_Object pathname; | |
644 | { | |
645 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
646 | return (IS_DIRECTORY_SEP (s[0]) |
647 | || (XSTRING (pathname)->size > 2 | |
648 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
649 | #ifdef ALTOS |
650 | || *s == '@' | |
651 | #endif | |
652 | #ifdef VMS | |
653 | || index (s, ':') | |
654 | #endif /* VMS */ | |
655 | ); | |
656 | } | |
657 | ||
658 | /* Search for a file whose name is STR, looking in directories | |
659 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
660 | SUFFIX is a string containing possible suffixes separated by colons. | |
661 | On success, returns a file descriptor. On failure, returns -1. | |
662 | ||
663 | EXEC_ONLY nonzero means don't open the files, | |
664 | just look for one that is executable. In this case, | |
665 | returns 1 on success. | |
666 | ||
667 | If STOREPTR is nonzero, it points to a slot where the name of | |
668 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
669 | nil is stored there on failure. |
670 | ||
671 | If the file we find is remote, return 0 | |
672 | but store the found remote file name in *STOREPTR. | |
673 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
674 | |
675 | int | |
676 | openp (path, str, suffix, storeptr, exec_only) | |
677 | Lisp_Object path, str; | |
678 | char *suffix; | |
679 | Lisp_Object *storeptr; | |
680 | int exec_only; | |
681 | { | |
682 | register int fd; | |
683 | int fn_size = 100; | |
684 | char buf[100]; | |
685 | register char *fn = buf; | |
686 | int absolute = 0; | |
687 | int want_size; | |
74549846 | 688 | Lisp_Object filename; |
078e7b4a | 689 | struct stat st; |
5a6e5452 | 690 | struct gcpro gcpro1; |
078e7b4a | 691 | |
5a6e5452 | 692 | GCPRO1 (str); |
078e7b4a JB |
693 | if (storeptr) |
694 | *storeptr = Qnil; | |
695 | ||
696 | if (complete_filename_p (str)) | |
697 | absolute = 1; | |
698 | ||
265a9e55 | 699 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
700 | { |
701 | char *nsuffix; | |
702 | ||
703 | filename = Fexpand_file_name (str, Fcar (path)); | |
704 | if (!complete_filename_p (filename)) | |
705 | /* If there are non-absolute elts in PATH (eg ".") */ | |
706 | /* Of course, this could conceivably lose if luser sets | |
707 | default-directory to be something non-absolute... */ | |
708 | { | |
709 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
710 | if (!complete_filename_p (filename)) | |
711 | /* Give up on this path element! */ | |
712 | continue; | |
713 | } | |
714 | ||
715 | /* Calculate maximum size of any filename made from | |
716 | this path element/specified file name and any possible suffix. */ | |
717 | want_size = strlen (suffix) + XSTRING (filename)->size + 1; | |
718 | if (fn_size < want_size) | |
719 | fn = (char *) alloca (fn_size = 100 + want_size); | |
720 | ||
721 | nsuffix = suffix; | |
722 | ||
723 | /* Loop over suffixes. */ | |
724 | while (1) | |
725 | { | |
726 | char *esuffix = (char *) index (nsuffix, ':'); | |
727 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 728 | Lisp_Object handler; |
078e7b4a | 729 | |
c49afcd7 RS |
730 | /* Concatenate path element/specified name with the suffix. |
731 | If the directory starts with /:, remove that. */ | |
732 | if (XSTRING (filename)->size > 2 | |
733 | && XSTRING (filename)->data[0] == '/' | |
734 | && XSTRING (filename)->data[1] == ':') | |
735 | { | |
736 | strncpy (fn, XSTRING (filename)->data + 2, | |
737 | XSTRING (filename)->size - 2); | |
738 | fn[XSTRING (filename)->size - 2] = 0; | |
739 | } | |
740 | else | |
741 | { | |
742 | strncpy (fn, XSTRING (filename)->data, XSTRING (filename)->size); | |
743 | fn[XSTRING (filename)->size] = 0; | |
744 | } | |
745 | ||
078e7b4a JB |
746 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
747 | strncat (fn, nsuffix, lsuffix); | |
748 | ||
74549846 RS |
749 | /* Check that the file exists and is not a directory. */ |
750 | if (absolute) | |
751 | handler = Qnil; | |
752 | else | |
753 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
754 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 755 | { |
74549846 RS |
756 | Lisp_Object string; |
757 | int exists; | |
078e7b4a | 758 | |
74549846 RS |
759 | string = build_string (fn); |
760 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
761 | : Ffile_readable_p (string)); | |
762 | if (exists | |
763 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
764 | exists = 0; | |
765 | ||
766 | if (exists) | |
078e7b4a JB |
767 | { |
768 | /* We succeeded; return this descriptor and filename. */ | |
769 | if (storeptr) | |
770 | *storeptr = build_string (fn); | |
5ef2a3c0 | 771 | UNGCPRO; |
74549846 RS |
772 | return 0; |
773 | } | |
774 | } | |
775 | else | |
776 | { | |
777 | int exists = (stat (fn, &st) >= 0 | |
778 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
779 | if (exists) | |
780 | { | |
781 | /* Check that we can access or open it. */ | |
782 | if (exec_only) | |
783 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
784 | else | |
785 | fd = open (fn, O_RDONLY, 0); | |
786 | ||
787 | if (fd >= 0) | |
788 | { | |
789 | /* We succeeded; return this descriptor and filename. */ | |
790 | if (storeptr) | |
791 | *storeptr = build_string (fn); | |
792 | UNGCPRO; | |
793 | return fd; | |
794 | } | |
078e7b4a JB |
795 | } |
796 | } | |
797 | ||
798 | /* Advance to next suffix. */ | |
799 | if (esuffix == 0) | |
800 | break; | |
801 | nsuffix += lsuffix + 1; | |
802 | } | |
5a6e5452 | 803 | if (absolute) |
5ef2a3c0 | 804 | break; |
078e7b4a JB |
805 | } |
806 | ||
5ef2a3c0 KH |
807 | UNGCPRO; |
808 | return -1; | |
078e7b4a JB |
809 | } |
810 | ||
811 | \f | |
ae321d28 RS |
812 | /* Merge the list we've accumulated of globals from the current input source |
813 | into the load_history variable. The details depend on whether | |
814 | the source has an associated file name or not. */ | |
815 | ||
816 | static void | |
817 | build_load_history (stream, source) | |
818 | FILE *stream; | |
819 | Lisp_Object source; | |
820 | { | |
821 | register Lisp_Object tail, prev, newelt; | |
822 | register Lisp_Object tem, tem2; | |
823 | register int foundit, loading; | |
824 | ||
8a1f1537 RS |
825 | /* Don't bother recording anything for preloaded files. */ |
826 | if (!NILP (Vpurify_flag)) | |
827 | return; | |
828 | ||
ae321d28 RS |
829 | loading = stream || !NARROWED; |
830 | ||
831 | tail = Vload_history; | |
832 | prev = Qnil; | |
833 | foundit = 0; | |
834 | while (!NILP (tail)) | |
835 | { | |
836 | tem = Fcar (tail); | |
837 | ||
838 | /* Find the feature's previous assoc list... */ | |
839 | if (!NILP (Fequal (source, Fcar (tem)))) | |
840 | { | |
841 | foundit = 1; | |
842 | ||
843 | /* If we're loading, remove it. */ | |
844 | if (loading) | |
845 | { | |
846 | if (NILP (prev)) | |
847 | Vload_history = Fcdr (tail); | |
848 | else | |
849 | Fsetcdr (prev, Fcdr (tail)); | |
850 | } | |
851 | ||
852 | /* Otherwise, cons on new symbols that are not already members. */ | |
853 | else | |
854 | { | |
855 | tem2 = Vcurrent_load_list; | |
856 | ||
857 | while (CONSP (tem2)) | |
858 | { | |
859 | newelt = Fcar (tem2); | |
860 | ||
861 | if (NILP (Fmemq (newelt, tem))) | |
862 | Fsetcar (tail, Fcons (Fcar (tem), | |
863 | Fcons (newelt, Fcdr (tem)))); | |
864 | ||
865 | tem2 = Fcdr (tem2); | |
866 | QUIT; | |
867 | } | |
868 | } | |
869 | } | |
870 | else | |
871 | prev = tail; | |
872 | tail = Fcdr (tail); | |
873 | QUIT; | |
874 | } | |
875 | ||
8a1f1537 RS |
876 | /* If we're loading, cons the new assoc onto the front of load-history, |
877 | the most-recently-loaded position. Also do this if we didn't find | |
878 | an existing member for the current source. */ | |
879 | if (loading || !foundit) | |
880 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
881 | Vload_history); | |
ae321d28 RS |
882 | } |
883 | ||
078e7b4a JB |
884 | Lisp_Object |
885 | unreadpure () /* Used as unwind-protect function in readevalloop */ | |
886 | { | |
887 | read_pure = 0; | |
888 | return Qnil; | |
889 | } | |
890 | ||
891 | static void | |
ae321d28 | 892 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag) |
078e7b4a | 893 | Lisp_Object readcharfun; |
ae321d28 RS |
894 | FILE *stream; |
895 | Lisp_Object sourcename; | |
078e7b4a JB |
896 | Lisp_Object (*evalfun) (); |
897 | int printflag; | |
898 | { | |
899 | register int c; | |
900 | register Lisp_Object val; | |
901 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 902 | struct gcpro gcpro1; |
49cf7ff4 RS |
903 | struct buffer *b = 0; |
904 | ||
905 | if (BUFFERP (readcharfun)) | |
906 | b = XBUFFER (readcharfun); | |
907 | else if (MARKERP (readcharfun)) | |
908 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
909 | |
910 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 911 | specbind (Qcurrent_load_list, Qnil); |
078e7b4a | 912 | |
6f7f43d5 RS |
913 | readchar_backlog = 0; |
914 | ||
8a1f1537 | 915 | GCPRO1 (sourcename); |
ae321d28 | 916 | |
ae321d28 RS |
917 | LOADHIST_ATTACH (sourcename); |
918 | ||
078e7b4a JB |
919 | while (1) |
920 | { | |
49cf7ff4 RS |
921 | if (b != 0 && NILP (b->name)) |
922 | error ("Reading from killed buffer"); | |
923 | ||
078e7b4a JB |
924 | instream = stream; |
925 | c = READCHAR; | |
926 | if (c == ';') | |
927 | { | |
928 | while ((c = READCHAR) != '\n' && c != -1); | |
929 | continue; | |
930 | } | |
931 | if (c < 0) break; | |
6069d957 RS |
932 | |
933 | /* Ignore whitespace here, so we can detect eof. */ | |
934 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
935 | continue; | |
078e7b4a | 936 | |
265a9e55 | 937 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 938 | { |
0e326373 | 939 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
940 | record_unwind_protect (unreadpure, Qnil); |
941 | val = read_list (-1, readcharfun); | |
0e326373 | 942 | unbind_to (count1, Qnil); |
078e7b4a JB |
943 | } |
944 | else | |
945 | { | |
946 | UNREAD (c); | |
4ad679f9 | 947 | read_objects = Qnil; |
84a15045 RS |
948 | if (NILP (Vload_read_function)) |
949 | val = read0 (readcharfun); | |
950 | else | |
951 | val = call1 (Vload_read_function, readcharfun); | |
078e7b4a JB |
952 | } |
953 | ||
954 | val = (*evalfun) (val); | |
955 | if (printflag) | |
956 | { | |
957 | Vvalues = Fcons (val, Vvalues); | |
958 | if (EQ (Vstandard_output, Qt)) | |
959 | Fprin1 (val, Qnil); | |
960 | else | |
961 | Fprint (val, Qnil); | |
962 | } | |
963 | } | |
964 | ||
ae321d28 | 965 | build_load_history (stream, sourcename); |
ae321d28 RS |
966 | UNGCPRO; |
967 | ||
078e7b4a JB |
968 | unbind_to (count, Qnil); |
969 | } | |
970 | ||
971 | #ifndef standalone | |
972 | ||
13febd85 | 973 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 3, "", |
94b304d7 RS |
974 | "Execute the current buffer as Lisp code.\n\ |
975 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
976 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
977 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
978 | nil means discard it; anything else is stream for print.\n\ |
979 | \n\ | |
13febd85 RS |
980 | If the optional third argument FILENAME is non-nil,\n\ |
981 | it specifies the file name to use for `load-history'.\n\ | |
982 | \n\ | |
d331bcad | 983 | This function preserves the position of point.") |
13febd85 RS |
984 | (buffer, printflag, filename) |
985 | Lisp_Object buffer, printflag, filename; | |
228d4b1c JA |
986 | { |
987 | int count = specpdl_ptr - specpdl; | |
988 | Lisp_Object tem, buf; | |
989 | ||
9391b698 | 990 | if (NILP (buffer)) |
228d4b1c JA |
991 | buf = Fcurrent_buffer (); |
992 | else | |
9391b698 | 993 | buf = Fget_buffer (buffer); |
dfdb645c | 994 | if (NILP (buf)) |
13febd85 | 995 | error ("No such buffer"); |
228d4b1c | 996 | |
dfdb645c | 997 | if (NILP (printflag)) |
228d4b1c JA |
998 | tem = Qsymbolp; |
999 | else | |
1000 | tem = printflag; | |
13febd85 RS |
1001 | |
1002 | if (NILP (filename)) | |
1003 | filename = XBUFFER (buf)->filename; | |
1004 | ||
228d4b1c JA |
1005 | specbind (Qstandard_output, tem); |
1006 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1007 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
13febd85 | 1008 | readevalloop (buf, 0, filename, Feval, !NILP (printflag)); |
cb09ab7a | 1009 | unbind_to (count, Qnil); |
228d4b1c JA |
1010 | |
1011 | return Qnil; | |
1012 | } | |
1013 | ||
1014 | #if 0 | |
c23edb78 | 1015 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1016 | "Execute the current buffer as Lisp code.\n\ |
1017 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1018 | nil means discard it; anything else is stream for print.\n\ | |
1019 | \n\ | |
1020 | If there is no error, point does not move. If there is an error,\n\ | |
1021 | point remains at the end of the last character read from the buffer.") | |
1022 | (printflag) | |
1023 | Lisp_Object printflag; | |
1024 | { | |
1025 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1026 | Lisp_Object tem, cbuf; |
1027 | ||
1028 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1029 | |
265a9e55 | 1030 | if (NILP (printflag)) |
078e7b4a JB |
1031 | tem = Qsymbolp; |
1032 | else | |
1033 | tem = printflag; | |
1034 | specbind (Qstandard_output, tem); | |
1035 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1036 | SET_PT (BEGV); | |
ae321d28 | 1037 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, !NILP (printflag)); |
078e7b4a JB |
1038 | return unbind_to (count, Qnil); |
1039 | } | |
228d4b1c | 1040 | #endif |
078e7b4a JB |
1041 | |
1042 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 3, "r", | |
1043 | "Execute the region as Lisp code.\n\ | |
1044 | When called from programs, expects two arguments,\n\ | |
1045 | giving starting and ending indices in the current buffer\n\ | |
1046 | of the text to be executed.\n\ | |
1047 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1048 | nil means discard it; anything else is stream for printing it.\n\ | |
1049 | \n\ | |
83f0c0c7 | 1050 | This function does not move point.") |
9391b698 EN |
1051 | (start, end, printflag) |
1052 | Lisp_Object start, end, printflag; | |
078e7b4a JB |
1053 | { |
1054 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1055 | Lisp_Object tem, cbuf; |
1056 | ||
1057 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1058 | |
265a9e55 | 1059 | if (NILP (printflag)) |
078e7b4a JB |
1060 | tem = Qsymbolp; |
1061 | else | |
1062 | tem = printflag; | |
1063 | specbind (Qstandard_output, tem); | |
1064 | ||
265a9e55 | 1065 | if (NILP (printflag)) |
078e7b4a JB |
1066 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1067 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1068 | ||
9391b698 EN |
1069 | /* This both uses start and checks its type. */ |
1070 | Fgoto_char (start); | |
1071 | Fnarrow_to_region (make_number (BEGV), end); | |
ae321d28 | 1072 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, !NILP (printflag)); |
078e7b4a JB |
1073 | |
1074 | return unbind_to (count, Qnil); | |
1075 | } | |
1076 | ||
1077 | #endif /* standalone */ | |
1078 | \f | |
1079 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1080 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1081 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1082 | STREAM or the value of `standard-input' may be:\n\ | |
1083 | a buffer (read from point and advance it)\n\ | |
1084 | a marker (read from where it points and advance it)\n\ | |
1085 | a function (call it with no arguments for each character,\n\ | |
1086 | call it with a char as argument to push a char back)\n\ | |
1087 | a string (takes text from string, starting at the beginning)\n\ | |
1088 | t (read text line using minibuffer and use it).") | |
5be02dff KH |
1089 | (stream) |
1090 | Lisp_Object stream; | |
078e7b4a JB |
1091 | { |
1092 | extern Lisp_Object Fread_minibuffer (); | |
1093 | ||
5be02dff KH |
1094 | if (NILP (stream)) |
1095 | stream = Vstandard_input; | |
1096 | if (EQ (stream, Qt)) | |
1097 | stream = Qread_char; | |
078e7b4a | 1098 | |
6f7f43d5 | 1099 | readchar_backlog = 0; |
17634846 | 1100 | new_backquote_flag = 0; |
4ad679f9 | 1101 | read_objects = Qnil; |
17634846 | 1102 | |
078e7b4a | 1103 | #ifndef standalone |
5be02dff | 1104 | if (EQ (stream, Qread_char)) |
078e7b4a JB |
1105 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
1106 | #endif | |
1107 | ||
5be02dff KH |
1108 | if (STRINGP (stream)) |
1109 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1110 | |
5be02dff | 1111 | return read0 (stream); |
078e7b4a JB |
1112 | } |
1113 | ||
1114 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1115 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1116 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1117 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1118 | they default to 0 and (length STRING) respectively.") | |
1119 | (string, start, end) | |
1120 | Lisp_Object string, start, end; | |
1121 | { | |
1122 | int startval, endval; | |
1123 | Lisp_Object tem; | |
1124 | ||
1125 | CHECK_STRING (string,0); | |
1126 | ||
265a9e55 | 1127 | if (NILP (end)) |
e28552a4 | 1128 | endval = XSTRING (string)->size_byte; |
078e7b4a | 1129 | else |
e28552a4 RS |
1130 | { |
1131 | CHECK_NUMBER (end, 2); | |
1132 | endval = string_char_to_byte (string, XINT (end)); | |
1133 | if (endval < 0 || endval > XSTRING (string)->size_byte) | |
078e7b4a JB |
1134 | args_out_of_range (string, end); |
1135 | } | |
1136 | ||
265a9e55 | 1137 | if (NILP (start)) |
078e7b4a JB |
1138 | startval = 0; |
1139 | else | |
e28552a4 RS |
1140 | { |
1141 | CHECK_NUMBER (start, 1); | |
1142 | startval = string_char_to_byte (string, XINT (start)); | |
078e7b4a JB |
1143 | if (startval < 0 || startval > endval) |
1144 | args_out_of_range (string, start); | |
1145 | } | |
1146 | ||
1147 | read_from_string_index = startval; | |
1148 | read_from_string_limit = endval; | |
1149 | ||
17634846 | 1150 | new_backquote_flag = 0; |
4ad679f9 | 1151 | read_objects = Qnil; |
17634846 | 1152 | |
078e7b4a | 1153 | tem = read0 (string); |
e28552a4 RS |
1154 | endval = string_byte_to_char (string, |
1155 | read_from_string_index); | |
1156 | return Fcons (tem, make_number (endval)); | |
078e7b4a JB |
1157 | } |
1158 | \f | |
6428369f KH |
1159 | /* Use this for recursive reads, in contexts where internal tokens |
1160 | are not allowed. */ | |
e28552a4 | 1161 | |
078e7b4a JB |
1162 | static Lisp_Object |
1163 | read0 (readcharfun) | |
1164 | Lisp_Object readcharfun; | |
1165 | { | |
1166 | register Lisp_Object val; | |
e28552a4 | 1167 | int c; |
078e7b4a | 1168 | |
17634846 | 1169 | val = read1 (readcharfun, &c, 0); |
6428369f | 1170 | if (c) |
e28552a4 RS |
1171 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (c), |
1172 | make_number (1)), | |
1173 | Qnil)); | |
078e7b4a JB |
1174 | |
1175 | return val; | |
1176 | } | |
1177 | \f | |
1178 | static int read_buffer_size; | |
1179 | static char *read_buffer; | |
1180 | ||
fe0e03f3 KH |
1181 | /* Read multibyte form and return it as a character. C is a first |
1182 | byte of multibyte form, and rest of them are read from | |
1183 | READCHARFUN. */ | |
6f7f43d5 | 1184 | |
fe0e03f3 KH |
1185 | static int |
1186 | read_multibyte (c, readcharfun) | |
1187 | register int c; | |
1188 | Lisp_Object readcharfun; | |
1189 | { | |
1190 | /* We need the actual character code of this multibyte | |
1191 | characters. */ | |
1192 | unsigned char str[MAX_LENGTH_OF_MULTI_BYTE_FORM]; | |
1193 | int len = 0; | |
1194 | ||
1195 | str[len++] = c; | |
1196 | while ((c = READCHAR) >= 0xA0 | |
1197 | && len < MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1198 | str[len++] = c; | |
1199 | UNREAD (c); | |
1200 | return STRING_CHAR (str, len); | |
1201 | } | |
1202 | ||
6f7f43d5 RS |
1203 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1204 | ||
078e7b4a | 1205 | static int |
e7fc914b | 1206 | read_escape (readcharfun, stringp) |
078e7b4a | 1207 | Lisp_Object readcharfun; |
e7fc914b | 1208 | int stringp; |
078e7b4a JB |
1209 | { |
1210 | register int c = READCHAR; | |
1211 | switch (c) | |
1212 | { | |
f3849f25 RS |
1213 | case -1: |
1214 | error ("End of file"); | |
1215 | ||
078e7b4a | 1216 | case 'a': |
265a9e55 | 1217 | return '\007'; |
078e7b4a JB |
1218 | case 'b': |
1219 | return '\b'; | |
f405a585 RS |
1220 | case 'd': |
1221 | return 0177; | |
078e7b4a JB |
1222 | case 'e': |
1223 | return 033; | |
1224 | case 'f': | |
1225 | return '\f'; | |
1226 | case 'n': | |
1227 | return '\n'; | |
1228 | case 'r': | |
1229 | return '\r'; | |
1230 | case 't': | |
1231 | return '\t'; | |
1232 | case 'v': | |
1233 | return '\v'; | |
1234 | case '\n': | |
1235 | return -1; | |
e28552a4 | 1236 | case ' ': |
e7fc914b KH |
1237 | if (stringp) |
1238 | return -1; | |
1239 | return ' '; | |
078e7b4a JB |
1240 | |
1241 | case 'M': | |
1242 | c = READCHAR; | |
1243 | if (c != '-') | |
1244 | error ("Invalid escape character syntax"); | |
1245 | c = READCHAR; | |
1246 | if (c == '\\') | |
e7fc914b | 1247 | c = read_escape (readcharfun, 0); |
7bd279cd | 1248 | return c | meta_modifier; |
f405a585 RS |
1249 | |
1250 | case 'S': | |
1251 | c = READCHAR; | |
1252 | if (c != '-') | |
1253 | error ("Invalid escape character syntax"); | |
1254 | c = READCHAR; | |
1255 | if (c == '\\') | |
e7fc914b | 1256 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1257 | return c | shift_modifier; |
1258 | ||
1259 | case 'H': | |
1260 | c = READCHAR; | |
1261 | if (c != '-') | |
1262 | error ("Invalid escape character syntax"); | |
1263 | c = READCHAR; | |
1264 | if (c == '\\') | |
e7fc914b | 1265 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1266 | return c | hyper_modifier; |
1267 | ||
1268 | case 'A': | |
1269 | c = READCHAR; | |
1270 | if (c != '-') | |
1271 | error ("Invalid escape character syntax"); | |
1272 | c = READCHAR; | |
1273 | if (c == '\\') | |
e7fc914b | 1274 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1275 | return c | alt_modifier; |
1276 | ||
1277 | case 's': | |
1278 | c = READCHAR; | |
1279 | if (c != '-') | |
1280 | error ("Invalid escape character syntax"); | |
1281 | c = READCHAR; | |
1282 | if (c == '\\') | |
e7fc914b | 1283 | c = read_escape (readcharfun, 0); |
7bd279cd | 1284 | return c | super_modifier; |
078e7b4a JB |
1285 | |
1286 | case 'C': | |
1287 | c = READCHAR; | |
1288 | if (c != '-') | |
1289 | error ("Invalid escape character syntax"); | |
1290 | case '^': | |
1291 | c = READCHAR; | |
1292 | if (c == '\\') | |
e7fc914b | 1293 | c = read_escape (readcharfun, 0); |
f405a585 RS |
1294 | if ((c & 0177) == '?') |
1295 | return 0177 | c; | |
1296 | /* ASCII control chars are made from letters (both cases), | |
1297 | as well as the non-letters within 0100...0137. */ | |
1298 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1299 | return (c & (037 | ~0177)); | |
1300 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1301 | return (c & (037 | ~0177)); | |
078e7b4a | 1302 | else |
7bd279cd | 1303 | return c | ctrl_modifier; |
078e7b4a JB |
1304 | |
1305 | case '0': | |
1306 | case '1': | |
1307 | case '2': | |
1308 | case '3': | |
1309 | case '4': | |
1310 | case '5': | |
1311 | case '6': | |
1312 | case '7': | |
1313 | /* An octal escape, as in ANSI C. */ | |
1314 | { | |
1315 | register int i = c - '0'; | |
1316 | register int count = 0; | |
1317 | while (++count < 3) | |
1318 | { | |
1319 | if ((c = READCHAR) >= '0' && c <= '7') | |
1320 | { | |
1321 | i *= 8; | |
1322 | i += c - '0'; | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | UNREAD (c); | |
1327 | break; | |
1328 | } | |
1329 | } | |
1330 | return i; | |
1331 | } | |
1332 | ||
1333 | case 'x': | |
1334 | /* A hex escape, as in ANSI C. */ | |
1335 | { | |
1336 | int i = 0; | |
1337 | while (1) | |
1338 | { | |
1339 | c = READCHAR; | |
1340 | if (c >= '0' && c <= '9') | |
1341 | { | |
1342 | i *= 16; | |
1343 | i += c - '0'; | |
1344 | } | |
1345 | else if ((c >= 'a' && c <= 'f') | |
1346 | || (c >= 'A' && c <= 'F')) | |
1347 | { | |
1348 | i *= 16; | |
1349 | if (c >= 'a' && c <= 'f') | |
1350 | i += c - 'a' + 10; | |
1351 | else | |
1352 | i += c - 'A' + 10; | |
1353 | } | |
1354 | else | |
1355 | { | |
1356 | UNREAD (c); | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | return i; | |
1361 | } | |
1362 | ||
1363 | default: | |
fe0e03f3 KH |
1364 | if (BASE_LEADING_CODE_P (c)) |
1365 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1366 | return c; |
1367 | } | |
1368 | } | |
1369 | ||
6428369f KH |
1370 | /* If the next token is ')' or ']' or '.', we store that character |
1371 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1372 | zero in *PCH and we read and return one lisp object. |
1373 | ||
1374 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1375 | ||
078e7b4a | 1376 | static Lisp_Object |
17634846 | 1377 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1378 | register Lisp_Object readcharfun; |
e28552a4 | 1379 | int *pch; |
17634846 | 1380 | int first_in_list; |
078e7b4a JB |
1381 | { |
1382 | register int c; | |
4ad679f9 EN |
1383 | int uninterned_symbol = 0; |
1384 | ||
6428369f | 1385 | *pch = 0; |
078e7b4a JB |
1386 | |
1387 | retry: | |
1388 | ||
1389 | c = READCHAR; | |
1390 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1391 | ||
1392 | switch (c) | |
1393 | { | |
1394 | case '(': | |
1395 | return read_list (0, readcharfun); | |
1396 | ||
1397 | case '[': | |
1398 | return read_vector (readcharfun); | |
1399 | ||
1400 | case ')': | |
1401 | case ']': | |
078e7b4a | 1402 | { |
6428369f KH |
1403 | *pch = c; |
1404 | return Qnil; | |
078e7b4a JB |
1405 | } |
1406 | ||
1407 | case '#': | |
200f684e | 1408 | c = READCHAR; |
c2390933 RS |
1409 | if (c == '^') |
1410 | { | |
1411 | c = READCHAR; | |
1412 | if (c == '[') | |
1413 | { | |
1414 | Lisp_Object tmp; | |
1415 | tmp = read_vector (readcharfun); | |
1416 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS | |
1417 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1418 | error ("Invalid size char-table"); | |
1419 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1420 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1421 | return tmp; |
1422 | } | |
3701b5de KH |
1423 | else if (c == '^') |
1424 | { | |
1425 | c = READCHAR; | |
1426 | if (c == '[') | |
1427 | { | |
1428 | Lisp_Object tmp; | |
1429 | tmp = read_vector (readcharfun); | |
1430 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) | |
1431 | error ("Invalid size char-table"); | |
1432 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1433 | XCHAR_TABLE (tmp)->top = Qnil; | |
1434 | return tmp; | |
1435 | } | |
1436 | Fsignal (Qinvalid_read_syntax, | |
1437 | Fcons (make_string ("#^^", 3), Qnil)); | |
1438 | } | |
c2390933 RS |
1439 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1440 | } | |
1441 | if (c == '&') | |
1442 | { | |
1443 | Lisp_Object length; | |
1444 | length = read1 (readcharfun, pch, first_in_list); | |
1445 | c = READCHAR; | |
1446 | if (c == '"') | |
1447 | { | |
1448 | Lisp_Object tmp, val; | |
90ed3ec5 | 1449 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1450 | / BITS_PER_CHAR); |
c2390933 RS |
1451 | |
1452 | UNREAD (c); | |
1453 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1454 | if (size_in_chars != XSTRING (tmp)->size |
1455 | /* We used to print 1 char too many | |
1456 | when the number of bits was a multiple of 8. | |
1457 | Accept such input in case it came from an old version. */ | |
1458 | && ! (XFASTINT (length) | |
1459 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1460 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1461 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1462 | |
1463 | val = Fmake_bool_vector (length, Qnil); | |
1464 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1465 | size_in_chars); | |
1466 | return val; | |
1467 | } | |
ec3bbd7d | 1468 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1469 | Qnil)); |
c2390933 | 1470 | } |
200f684e RS |
1471 | if (c == '[') |
1472 | { | |
1473 | /* Accept compiled functions at read-time so that we don't have to | |
1474 | build them using function calls. */ | |
748ef62f RS |
1475 | Lisp_Object tmp; |
1476 | tmp = read_vector (readcharfun); | |
1477 | return Fmake_byte_code (XVECTOR (tmp)->size, | |
1478 | XVECTOR (tmp)->contents); | |
200f684e | 1479 | } |
748ef62f RS |
1480 | #ifdef USE_TEXT_PROPERTIES |
1481 | if (c == '(') | |
1482 | { | |
1483 | Lisp_Object tmp; | |
1484 | struct gcpro gcpro1; | |
e28552a4 | 1485 | int ch; |
748ef62f RS |
1486 | |
1487 | /* Read the string itself. */ | |
17634846 | 1488 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1489 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1490 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1491 | GCPRO1 (tmp); | |
1492 | /* Read the intervals and their properties. */ | |
1493 | while (1) | |
1494 | { | |
1495 | Lisp_Object beg, end, plist; | |
1496 | ||
17634846 | 1497 | beg = read1 (readcharfun, &ch, 0); |
6428369f KH |
1498 | if (ch == ')') |
1499 | break; | |
1500 | if (ch == 0) | |
17634846 | 1501 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1502 | if (ch == 0) |
17634846 | 1503 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1504 | if (ch) |
748ef62f | 1505 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1506 | Fcons (build_string ("invalid string property list"), |
1507 | Qnil)); | |
748ef62f RS |
1508 | Fset_text_properties (beg, end, plist, tmp); |
1509 | } | |
1510 | UNGCPRO; | |
1511 | return tmp; | |
1512 | } | |
1513 | #endif | |
20ea2964 RS |
1514 | /* #@NUMBER is used to skip NUMBER following characters. |
1515 | That's used in .elc files to skip over doc strings | |
1516 | and function definitions. */ | |
1517 | if (c == '@') | |
1518 | { | |
1519 | int i, nskip = 0; | |
1520 | ||
1521 | /* Read a decimal integer. */ | |
1522 | while ((c = READCHAR) >= 0 | |
1523 | && c >= '0' && c <= '9') | |
1524 | { | |
1525 | nskip *= 10; | |
1526 | nskip += c - '0'; | |
1527 | } | |
1528 | if (c >= 0) | |
1529 | UNREAD (c); | |
1530 | ||
b2a30870 RS |
1531 | #ifndef DOS_NT /* I don't know if filepos works right on MSDOS and Windoze. */ |
1532 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) | |
1533 | { | |
1534 | /* If we are supposed to force doc strings into core right now, | |
1535 | record the last string that we skipped, | |
1536 | and record where in the file it comes from. */ | |
1537 | if (saved_doc_string_size == 0) | |
1538 | { | |
1539 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1540 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1541 | } |
1542 | if (nskip > saved_doc_string_size) | |
1543 | { | |
1544 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1545 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1546 | saved_doc_string_size); | |
b2a30870 RS |
1547 | } |
1548 | ||
1549 | saved_doc_string_position = ftell (instream); | |
1550 | ||
1551 | /* Copy that many characters into saved_doc_string. */ | |
1552 | for (i = 0; i < nskip && c >= 0; i++) | |
1553 | saved_doc_string[i] = c = READCHAR; | |
1554 | ||
1555 | saved_doc_string_length = i; | |
1556 | } | |
1557 | else | |
1558 | #endif /* not DOS_NT */ | |
1559 | { | |
1560 | /* Skip that many characters. */ | |
1561 | for (i = 0; i < nskip && c >= 0; i++) | |
1562 | c = READCHAR; | |
1563 | } | |
d49f0c1a | 1564 | |
20ea2964 RS |
1565 | goto retry; |
1566 | } | |
1567 | if (c == '$') | |
1568 | return Vload_file_name; | |
2b6cae0c RS |
1569 | if (c == '\'') |
1570 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1571 | /* #:foo is the uninterned symbol named foo. */ |
1572 | if (c == ':') | |
1573 | { | |
1574 | uninterned_symbol = 1; | |
1575 | c = READCHAR; | |
1576 | goto default_label; | |
1577 | } | |
1578 | /* Reader forms that can reuse previously read objects. */ | |
1579 | if (c >= '0' && c <= '9') | |
1580 | { | |
1581 | int n = 0; | |
1582 | Lisp_Object tem; | |
2b6cae0c | 1583 | |
4ad679f9 EN |
1584 | /* Read a non-negative integer. */ |
1585 | while (c >= '0' && c <= '9') | |
1586 | { | |
1587 | n *= 10; | |
1588 | n += c - '0'; | |
1589 | c = READCHAR; | |
1590 | } | |
1591 | /* #n=object returns object, but associates it with n for #n#. */ | |
1592 | if (c == '=') | |
1593 | { | |
1594 | tem = read0 (readcharfun); | |
1595 | read_objects = Fcons (Fcons (make_number (n), tem), read_objects); | |
1596 | return tem; | |
1597 | } | |
1598 | /* #n# returns a previously read object. */ | |
1599 | if (c == '#') | |
1600 | { | |
1601 | tem = Fassq (make_number (n), read_objects); | |
1602 | if (CONSP (tem)) | |
1603 | return XCDR (tem); | |
1604 | /* Fall through to error message. */ | |
1605 | } | |
1606 | /* Fall through to error message. */ | |
1607 | } | |
20ea2964 | 1608 | |
200f684e | 1609 | UNREAD (c); |
748ef62f | 1610 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
1611 | |
1612 | case ';': | |
1613 | while ((c = READCHAR) >= 0 && c != '\n'); | |
1614 | goto retry; | |
1615 | ||
1616 | case '\'': | |
1617 | { | |
1618 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
1619 | } | |
1620 | ||
17634846 RS |
1621 | case '`': |
1622 | if (first_in_list) | |
1623 | goto default_label; | |
1624 | else | |
1625 | { | |
1626 | Lisp_Object value; | |
1627 | ||
1628 | new_backquote_flag = 1; | |
1629 | value = read0 (readcharfun); | |
1630 | new_backquote_flag = 0; | |
1631 | ||
1632 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
1633 | } | |
1634 | ||
1635 | case ',': | |
1636 | if (new_backquote_flag) | |
1637 | { | |
1638 | Lisp_Object comma_type = Qnil; | |
1639 | Lisp_Object value; | |
1640 | int ch = READCHAR; | |
1641 | ||
1642 | if (ch == '@') | |
1643 | comma_type = Qcomma_at; | |
1644 | else if (ch == '.') | |
1645 | comma_type = Qcomma_dot; | |
1646 | else | |
1647 | { | |
1648 | if (ch >= 0) UNREAD (ch); | |
1649 | comma_type = Qcomma; | |
1650 | } | |
1651 | ||
1652 | new_backquote_flag = 0; | |
1653 | value = read0 (readcharfun); | |
1654 | new_backquote_flag = 1; | |
1655 | return Fcons (comma_type, Fcons (value, Qnil)); | |
1656 | } | |
1657 | else | |
1658 | goto default_label; | |
1659 | ||
078e7b4a JB |
1660 | case '?': |
1661 | { | |
1662 | register Lisp_Object val; | |
1663 | ||
1664 | c = READCHAR; | |
1665 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1666 | ||
1667 | if (c == '\\') | |
e7fc914b | 1668 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
1669 | else if (BASE_LEADING_CODE_P (c)) |
1670 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 1671 | |
6f7f43d5 | 1672 | return make_number (c); |
078e7b4a JB |
1673 | } |
1674 | ||
1675 | case '\"': | |
1676 | { | |
1677 | register char *p = read_buffer; | |
1678 | register char *end = read_buffer + read_buffer_size; | |
1679 | register int c; | |
e7fc914b KH |
1680 | /* Nonzero if we saw an escape sequence specifying |
1681 | a multibyte character. */ | |
1682 | int force_multibyte = 0; | |
1683 | /* Nonzero if we saw an escape sequence specifying | |
1684 | a single-byte character. */ | |
1685 | int force_singlebyte = 0; | |
078e7b4a | 1686 | int cancel = 0; |
e7fc914b | 1687 | int nchars; |
078e7b4a JB |
1688 | |
1689 | while ((c = READCHAR) >= 0 | |
1690 | && c != '\"') | |
1691 | { | |
1692 | if (p == end) | |
1693 | { | |
1694 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1695 | p += new - read_buffer; | |
1696 | read_buffer += new - read_buffer; | |
1697 | end = read_buffer + read_buffer_size; | |
1698 | } | |
1699 | if (c == '\\') | |
03e88613 | 1700 | { |
e7fc914b | 1701 | c = read_escape (readcharfun, 1); |
03e88613 RS |
1702 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_META))) |
1703 | { | |
d5b28a9d AS |
1704 | unsigned char workbuf[4]; |
1705 | unsigned char *str = workbuf; | |
03e88613 RS |
1706 | int length; |
1707 | ||
1708 | length = non_ascii_char_to_string (c, workbuf, &str); | |
e7fc914b KH |
1709 | if (length > 1) |
1710 | force_multibyte = 1; | |
03e88613 RS |
1711 | |
1712 | if (p + length > end) | |
1713 | { | |
1714 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1715 | p += new - read_buffer; | |
1716 | read_buffer += new - read_buffer; | |
1717 | end = read_buffer + read_buffer_size; | |
1718 | } | |
1719 | ||
1720 | bcopy (str, p, length); | |
1721 | p += length; | |
1722 | continue; | |
1723 | } | |
e7fc914b KH |
1724 | else if (! ASCII_BYTE_P (c)) |
1725 | force_singlebyte = 1; | |
03e88613 | 1726 | } |
6f7f43d5 | 1727 | |
078e7b4a | 1728 | /* c is -1 if \ newline has just been seen */ |
f405a585 | 1729 | if (c == -1) |
078e7b4a JB |
1730 | { |
1731 | if (p == read_buffer) | |
1732 | cancel = 1; | |
1733 | } | |
1734 | else | |
f943104a | 1735 | { |
988c2f83 RS |
1736 | /* Allow `\C- ' and `\C-?'. */ |
1737 | if (c == (CHAR_CTL | ' ')) | |
1738 | c = 0; | |
1739 | else if (c == (CHAR_CTL | '?')) | |
1740 | c = 127; | |
1741 | ||
f943104a KH |
1742 | if (c & CHAR_META) |
1743 | /* Move the meta bit to the right place for a string. */ | |
1744 | c = (c & ~CHAR_META) | 0x80; | |
1745 | if (c & ~0xff) | |
1746 | error ("Invalid modifier in string"); | |
1747 | *p++ = c; | |
1748 | } | |
078e7b4a | 1749 | } |
6f7f43d5 RS |
1750 | if (c < 0) |
1751 | return Fsignal (Qend_of_file, Qnil); | |
078e7b4a JB |
1752 | |
1753 | /* If purifying, and string starts with \ newline, | |
1754 | return zero instead. This is for doc strings | |
08564963 | 1755 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 1756 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
1757 | return make_number (0); |
1758 | ||
e7fc914b KH |
1759 | if (force_singlebyte && force_multibyte) |
1760 | error ("Multibyte and single-byte escapes in one string constant"); | |
1761 | ||
1762 | if (force_singlebyte) | |
1763 | nchars = p - read_buffer; | |
1764 | else if (! NILP (buffer_defaults.enable_multibyte_characters) | |
1765 | || force_multibyte) | |
1766 | nchars = chars_in_text (read_buffer, p - read_buffer); | |
e28552a4 | 1767 | else |
e7fc914b KH |
1768 | nchars = p - read_buffer; |
1769 | ||
1770 | if (read_pure) | |
1771 | return make_pure_string (read_buffer, nchars, p - read_buffer); | |
1772 | return make_multibyte_string (read_buffer, nchars, p - read_buffer); | |
078e7b4a JB |
1773 | } |
1774 | ||
109d300c JB |
1775 | case '.': |
1776 | { | |
1777 | #ifdef LISP_FLOAT_TYPE | |
1778 | /* If a period is followed by a number, then we should read it | |
1779 | as a floating point number. Otherwise, it denotes a dotted | |
1780 | pair. */ | |
1781 | int next_char = READCHAR; | |
1782 | UNREAD (next_char); | |
1783 | ||
075027b1 | 1784 | if (! (next_char >= '0' && next_char <= '9')) |
109d300c JB |
1785 | #endif |
1786 | { | |
6428369f KH |
1787 | *pch = c; |
1788 | return Qnil; | |
109d300c JB |
1789 | } |
1790 | ||
1791 | /* Otherwise, we fall through! Note that the atom-reading loop | |
1792 | below will now loop at least once, assuring that we will not | |
1793 | try to UNREAD two characters in a row. */ | |
1794 | } | |
078e7b4a | 1795 | default: |
17634846 | 1796 | default_label: |
078e7b4a JB |
1797 | if (c <= 040) goto retry; |
1798 | { | |
1799 | register char *p = read_buffer; | |
481c6336 | 1800 | int quoted = 0; |
078e7b4a JB |
1801 | |
1802 | { | |
1803 | register char *end = read_buffer + read_buffer_size; | |
1804 | ||
6f7f43d5 RS |
1805 | while (c > 040 |
1806 | && !(c == '\"' || c == '\'' || c == ';' || c == '?' | |
1807 | || c == '(' || c == ')' | |
109d300c | 1808 | #ifndef LISP_FLOAT_TYPE |
6f7f43d5 RS |
1809 | /* If we have floating-point support, then we need |
1810 | to allow <digits><dot><digits>. */ | |
1811 | || c =='.' | |
078e7b4a | 1812 | #endif /* not LISP_FLOAT_TYPE */ |
6f7f43d5 RS |
1813 | || c == '[' || c == ']' || c == '#' |
1814 | )) | |
078e7b4a JB |
1815 | { |
1816 | if (p == end) | |
1817 | { | |
1818 | register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1819 | p += new - read_buffer; | |
1820 | read_buffer += new - read_buffer; | |
1821 | end = read_buffer + read_buffer_size; | |
1822 | } | |
1823 | if (c == '\\') | |
481c6336 RS |
1824 | { |
1825 | c = READCHAR; | |
1826 | quoted = 1; | |
1827 | } | |
6f7f43d5 | 1828 | |
078e7b4a | 1829 | *p++ = c; |
6f7f43d5 | 1830 | |
078e7b4a JB |
1831 | c = READCHAR; |
1832 | } | |
1833 | ||
1834 | if (p == end) | |
1835 | { | |
1836 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1837 | p += new - read_buffer; | |
1838 | read_buffer += new - read_buffer; | |
1839 | /* end = read_buffer + read_buffer_size; */ | |
1840 | } | |
1841 | *p = 0; | |
1842 | if (c >= 0) | |
1843 | UNREAD (c); | |
1844 | } | |
1845 | ||
4ad679f9 | 1846 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
1847 | { |
1848 | register char *p1; | |
1849 | register Lisp_Object val; | |
1850 | p1 = read_buffer; | |
1851 | if (*p1 == '+' || *p1 == '-') p1++; | |
1852 | /* Is it an integer? */ | |
1853 | if (p1 != p) | |
1854 | { | |
1855 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
dbc4e1c1 | 1856 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
1857 | /* Integers can have trailing decimal points. */ |
1858 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
dbc4e1c1 | 1859 | #endif |
481c6336 RS |
1860 | if (p1 == p) |
1861 | /* It is an integer. */ | |
1862 | { | |
dbc4e1c1 | 1863 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
1864 | if (p1[-1] == '.') |
1865 | p1[-1] = '\0'; | |
dbc4e1c1 | 1866 | #endif |
faca07fb RS |
1867 | if (sizeof (int) == sizeof (EMACS_INT)) |
1868 | XSETINT (val, atoi (read_buffer)); | |
1869 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
1870 | XSETINT (val, atol (read_buffer)); | |
1871 | else | |
1872 | abort (); | |
481c6336 RS |
1873 | return val; |
1874 | } | |
1875 | } | |
078e7b4a | 1876 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
1877 | if (isfloat_string (read_buffer)) |
1878 | return make_float (atof (read_buffer)); | |
078e7b4a | 1879 | #endif |
481c6336 | 1880 | } |
078e7b4a | 1881 | |
4ad679f9 EN |
1882 | if (uninterned_symbol) |
1883 | return make_symbol (read_buffer); | |
1884 | else | |
1885 | return intern (read_buffer); | |
078e7b4a JB |
1886 | } |
1887 | } | |
1888 | } | |
1889 | \f | |
1890 | #ifdef LISP_FLOAT_TYPE | |
1891 | ||
078e7b4a JB |
1892 | #define LEAD_INT 1 |
1893 | #define DOT_CHAR 2 | |
1894 | #define TRAIL_INT 4 | |
1895 | #define E_CHAR 8 | |
1896 | #define EXP_INT 16 | |
1897 | ||
1898 | int | |
1899 | isfloat_string (cp) | |
1900 | register char *cp; | |
1901 | { | |
1902 | register state; | |
1903 | ||
1904 | state = 0; | |
1905 | if (*cp == '+' || *cp == '-') | |
1906 | cp++; | |
1907 | ||
075027b1 | 1908 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
1909 | { |
1910 | state |= LEAD_INT; | |
075027b1 RS |
1911 | while (*cp >= '0' && *cp <= '9') |
1912 | cp++; | |
078e7b4a JB |
1913 | } |
1914 | if (*cp == '.') | |
1915 | { | |
1916 | state |= DOT_CHAR; | |
1917 | cp++; | |
1918 | } | |
075027b1 | 1919 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
1920 | { |
1921 | state |= TRAIL_INT; | |
075027b1 | 1922 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
1923 | cp++; |
1924 | } | |
a35f88bf | 1925 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
1926 | { |
1927 | state |= E_CHAR; | |
1928 | cp++; | |
e73997a1 RS |
1929 | if (*cp == '+' || *cp == '-') |
1930 | cp++; | |
078e7b4a | 1931 | } |
078e7b4a | 1932 | |
075027b1 | 1933 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
1934 | { |
1935 | state |= EXP_INT; | |
075027b1 | 1936 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
1937 | cp++; |
1938 | } | |
37579d7c | 1939 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 1940 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 1941 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 1942 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
1943 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
1944 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a JB |
1945 | } |
1946 | #endif /* LISP_FLOAT_TYPE */ | |
1947 | \f | |
1948 | static Lisp_Object | |
1949 | read_vector (readcharfun) | |
1950 | Lisp_Object readcharfun; | |
1951 | { | |
1952 | register int i; | |
1953 | register int size; | |
1954 | register Lisp_Object *ptr; | |
1955 | register Lisp_Object tem, vector; | |
1956 | register struct Lisp_Cons *otem; | |
1957 | Lisp_Object len; | |
1958 | ||
1959 | tem = read_list (1, readcharfun); | |
1960 | len = Flength (tem); | |
1961 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
1962 | ||
1963 | ||
1964 | size = XVECTOR (vector)->size; | |
1965 | ptr = XVECTOR (vector)->contents; | |
1966 | for (i = 0; i < size; i++) | |
1967 | { | |
1968 | ptr[i] = read_pure ? Fpurecopy (Fcar (tem)) : Fcar (tem); | |
1969 | otem = XCONS (tem); | |
1970 | tem = Fcdr (tem); | |
1971 | free_cons (otem); | |
1972 | } | |
1973 | return vector; | |
1974 | } | |
1975 | ||
6f7f43d5 RS |
1976 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
1977 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
1978 | and make structure pure. */ |
1979 | ||
1980 | static Lisp_Object | |
1981 | read_list (flag, readcharfun) | |
1982 | int flag; | |
1983 | register Lisp_Object readcharfun; | |
1984 | { | |
1985 | /* -1 means check next element for defun, | |
1986 | 0 means don't check, | |
1987 | 1 means already checked and found defun. */ | |
1988 | int defunflag = flag < 0 ? -1 : 0; | |
1989 | Lisp_Object val, tail; | |
1990 | register Lisp_Object elt, tem; | |
1991 | struct gcpro gcpro1, gcpro2; | |
821d417e | 1992 | /* 0 is the normal case. |
b2a30870 RS |
1993 | 1 means this list is a doc reference; replace it with the number 0. |
1994 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 1995 | int doc_reference = 0; |
078e7b4a | 1996 | |
17634846 RS |
1997 | /* Initialize this to 1 if we are reading a list. */ |
1998 | int first_in_list = flag <= 0; | |
1999 | ||
078e7b4a JB |
2000 | val = Qnil; |
2001 | tail = Qnil; | |
2002 | ||
2003 | while (1) | |
2004 | { | |
e28552a4 | 2005 | int ch; |
078e7b4a | 2006 | GCPRO2 (val, tail); |
17634846 | 2007 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2008 | UNGCPRO; |
20ea2964 | 2009 | |
17634846 RS |
2010 | first_in_list = 0; |
2011 | ||
821d417e | 2012 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2013 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2014 | && ! NILP (elt) |
821d417e RS |
2015 | && !NILP (Vpurify_flag)) |
2016 | { | |
2017 | if (NILP (Vdoc_file_name)) | |
2018 | /* We have not yet called Snarf-documentation, so assume | |
2019 | this file is described in the DOC-MM.NN file | |
2020 | and Snarf-documentation will fill in the right value later. | |
2021 | For now, replace the whole list with 0. */ | |
2022 | doc_reference = 1; | |
2023 | else | |
2024 | /* We have already called Snarf-documentation, so make a relative | |
2025 | file name for this file, so it can be found properly | |
2026 | in the installed Lisp directory. | |
2027 | We don't use Fexpand_file_name because that would make | |
2028 | the directory absolute now. */ | |
2029 | elt = concat2 (build_string ("../lisp/"), | |
2030 | Ffile_name_nondirectory (elt)); | |
2031 | } | |
b2a30870 | 2032 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2033 | && ! NILP (elt) |
b2a30870 RS |
2034 | && load_force_doc_strings) |
2035 | doc_reference = 2; | |
20ea2964 | 2036 | |
6428369f | 2037 | if (ch) |
078e7b4a JB |
2038 | { |
2039 | if (flag > 0) | |
2040 | { | |
6428369f | 2041 | if (ch == ']') |
078e7b4a | 2042 | return val; |
821d417e RS |
2043 | Fsignal (Qinvalid_read_syntax, |
2044 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2045 | } |
6428369f | 2046 | if (ch == ')') |
078e7b4a | 2047 | return val; |
6428369f | 2048 | if (ch == '.') |
078e7b4a JB |
2049 | { |
2050 | GCPRO2 (val, tail); | |
265a9e55 | 2051 | if (!NILP (tail)) |
078e7b4a JB |
2052 | XCONS (tail)->cdr = read0 (readcharfun); |
2053 | else | |
2054 | val = read0 (readcharfun); | |
17634846 | 2055 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2056 | UNGCPRO; |
6428369f | 2057 | if (ch == ')') |
821d417e RS |
2058 | { |
2059 | if (doc_reference == 1) | |
2060 | return make_number (0); | |
b2a30870 RS |
2061 | if (doc_reference == 2) |
2062 | { | |
2063 | /* Get a doc string from the file we are loading. | |
2064 | If it's in saved_doc_string, get it from there. */ | |
2065 | int pos = XINT (XCONS (val)->cdr); | |
2066 | if (pos >= saved_doc_string_position | |
2067 | && pos < (saved_doc_string_position | |
2068 | + saved_doc_string_length)) | |
2069 | { | |
2070 | int start = pos - saved_doc_string_position; | |
2071 | int from, to; | |
2072 | ||
2073 | /* Process quoting with ^A, | |
2074 | and find the end of the string, | |
2075 | which is marked with ^_ (037). */ | |
2076 | for (from = start, to = start; | |
2077 | saved_doc_string[from] != 037;) | |
2078 | { | |
2079 | int c = saved_doc_string[from++]; | |
2080 | if (c == 1) | |
2081 | { | |
2082 | c = saved_doc_string[from++]; | |
2083 | if (c == 1) | |
2084 | saved_doc_string[to++] = c; | |
2085 | else if (c == '0') | |
2086 | saved_doc_string[to++] = 0; | |
2087 | else if (c == '_') | |
2088 | saved_doc_string[to++] = 037; | |
2089 | } | |
2090 | else | |
2091 | saved_doc_string[to++] = c; | |
2092 | } | |
2093 | ||
2094 | return make_string (saved_doc_string + start, | |
2095 | to - start); | |
2096 | } | |
2097 | else | |
2098 | return read_doc_string (val); | |
2099 | } | |
2100 | ||
821d417e RS |
2101 | return val; |
2102 | } | |
078e7b4a JB |
2103 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2104 | } | |
2105 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2106 | } | |
2107 | tem = (read_pure && flag <= 0 | |
2108 | ? pure_cons (elt, Qnil) | |
2109 | : Fcons (elt, Qnil)); | |
265a9e55 | 2110 | if (!NILP (tail)) |
078e7b4a JB |
2111 | XCONS (tail)->cdr = tem; |
2112 | else | |
2113 | val = tem; | |
2114 | tail = tem; | |
2115 | if (defunflag < 0) | |
2116 | defunflag = EQ (elt, Qdefun); | |
2117 | else if (defunflag > 0) | |
2118 | read_pure = 1; | |
2119 | } | |
2120 | } | |
2121 | \f | |
2122 | Lisp_Object Vobarray; | |
2123 | Lisp_Object initial_obarray; | |
2124 | ||
d007f5c8 RS |
2125 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2126 | ||
2127 | int oblookup_last_bucket_number; | |
2128 | ||
2129 | static int hash_string (); | |
2130 | Lisp_Object oblookup (); | |
2131 | ||
2132 | /* Get an error if OBARRAY is not an obarray. | |
2133 | If it is one, return it. */ | |
2134 | ||
078e7b4a JB |
2135 | Lisp_Object |
2136 | check_obarray (obarray) | |
2137 | Lisp_Object obarray; | |
2138 | { | |
cfff016d | 2139 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2140 | { |
2141 | /* If Vobarray is now invalid, force it to be valid. */ | |
2142 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2143 | ||
2144 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2145 | } | |
2146 | return obarray; | |
2147 | } | |
2148 | ||
d007f5c8 RS |
2149 | /* Intern the C string STR: return a symbol with that name, |
2150 | interned in the current obarray. */ | |
078e7b4a JB |
2151 | |
2152 | Lisp_Object | |
2153 | intern (str) | |
2154 | char *str; | |
2155 | { | |
2156 | Lisp_Object tem; | |
2157 | int len = strlen (str); | |
153a17b7 | 2158 | Lisp_Object obarray; |
078e7b4a | 2159 | |
153a17b7 | 2160 | obarray = Vobarray; |
cfff016d | 2161 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2162 | obarray = check_obarray (obarray); |
e28552a4 | 2163 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2164 | if (SYMBOLP (tem)) |
078e7b4a | 2165 | return tem; |
87631ef7 | 2166 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2167 | } |
4ad679f9 EN |
2168 | |
2169 | /* Create an uninterned symbol with name STR. */ | |
2170 | ||
2171 | Lisp_Object | |
2172 | make_symbol (str) | |
2173 | char *str; | |
2174 | { | |
2175 | int len = strlen (str); | |
2176 | ||
2177 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
e28552a4 | 2178 | ? make_pure_string (str, len, len) |
4ad679f9 EN |
2179 | : make_string (str, len))); |
2180 | } | |
d007f5c8 | 2181 | \f |
078e7b4a JB |
2182 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2183 | "Return the canonical symbol whose name is STRING.\n\ | |
2184 | If there is none, one is created by this function and returned.\n\ | |
2185 | A second optional argument specifies the obarray to use;\n\ | |
2186 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2187 | (string, obarray) |
2188 | Lisp_Object string, obarray; | |
078e7b4a JB |
2189 | { |
2190 | register Lisp_Object tem, sym, *ptr; | |
2191 | ||
265a9e55 | 2192 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2193 | obarray = check_obarray (obarray); |
2194 | ||
9391b698 | 2195 | CHECK_STRING (string, 0); |
078e7b4a | 2196 | |
e28552a4 RS |
2197 | tem = oblookup (obarray, XSTRING (string)->data, |
2198 | XSTRING (string)->size, | |
2199 | XSTRING (string)->size_byte); | |
cfff016d | 2200 | if (!INTEGERP (tem)) |
078e7b4a JB |
2201 | return tem; |
2202 | ||
265a9e55 | 2203 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2204 | string = Fpurecopy (string); |
2205 | sym = Fmake_symbol (string); | |
4ad679f9 | 2206 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2207 | |
a0549832 RS |
2208 | if (XSTRING (string)->data[0] == ':') |
2209 | XSYMBOL (sym)->value = sym; | |
2210 | ||
078e7b4a | 2211 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2212 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2213 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2214 | else | |
2215 | XSYMBOL (sym)->next = 0; | |
2216 | *ptr = sym; | |
2217 | return sym; | |
2218 | } | |
2219 | ||
2220 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
2221 | "Return the canonical symbol whose name is STRING, or nil if none exists.\n\ | |
2222 | A second optional argument specifies the obarray to use;\n\ | |
2223 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2224 | (string, obarray) |
2225 | Lisp_Object string, obarray; | |
078e7b4a JB |
2226 | { |
2227 | register Lisp_Object tem; | |
2228 | ||
265a9e55 | 2229 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2230 | obarray = check_obarray (obarray); |
2231 | ||
9391b698 | 2232 | CHECK_STRING (string, 0); |
078e7b4a | 2233 | |
e28552a4 RS |
2234 | tem = oblookup (obarray, XSTRING (string)->data, |
2235 | XSTRING (string)->size, | |
2236 | XSTRING (string)->size_byte); | |
cfff016d | 2237 | if (!INTEGERP (tem)) |
078e7b4a JB |
2238 | return tem; |
2239 | return Qnil; | |
2240 | } | |
d007f5c8 RS |
2241 | \f |
2242 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2243 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2244 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2245 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2246 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2247 | OBARRAY defaults to the value of the variable `obarray'.") | |
2248 | (name, obarray) | |
2249 | Lisp_Object name, obarray; | |
2250 | { | |
2251 | register Lisp_Object string, tem; | |
2252 | int hash; | |
2253 | ||
2254 | if (NILP (obarray)) obarray = Vobarray; | |
2255 | obarray = check_obarray (obarray); | |
2256 | ||
2257 | if (SYMBOLP (name)) | |
2258 | XSETSTRING (string, XSYMBOL (name)->name); | |
2259 | else | |
2260 | { | |
2261 | CHECK_STRING (name, 0); | |
2262 | string = name; | |
2263 | } | |
2264 | ||
e28552a4 RS |
2265 | tem = oblookup (obarray, XSTRING (string)->data, |
2266 | XSTRING (string)->size, | |
2267 | XSTRING (string)->size_byte); | |
d007f5c8 RS |
2268 | if (INTEGERP (tem)) |
2269 | return Qnil; | |
2270 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2271 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2272 | return Qnil; | |
2273 | ||
2274 | hash = oblookup_last_bucket_number; | |
2275 | ||
2276 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2277 | { |
2278 | if (XSYMBOL (tem)->next) | |
2279 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2280 | else | |
2281 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2282 | } | |
d007f5c8 RS |
2283 | else |
2284 | { | |
2285 | Lisp_Object tail, following; | |
2286 | ||
2287 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2288 | XSYMBOL (tail)->next; | |
2289 | tail = following) | |
2290 | { | |
2291 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2292 | if (EQ (following, tem)) | |
2293 | { | |
2294 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2295 | break; | |
2296 | } | |
2297 | } | |
2298 | } | |
2299 | ||
2300 | return Qt; | |
2301 | } | |
2302 | \f | |
2303 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
2304 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
2305 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
2306 | |
2307 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
2308 | |
2309 | Lisp_Object | |
e28552a4 | 2310 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
2311 | Lisp_Object obarray; |
2312 | register char *ptr; | |
e28552a4 | 2313 | int size, size_byte; |
078e7b4a | 2314 | { |
7a70b397 RS |
2315 | int hash; |
2316 | int obsize; | |
078e7b4a JB |
2317 | register Lisp_Object tail; |
2318 | Lisp_Object bucket, tem; | |
2319 | ||
cfff016d | 2320 | if (!VECTORP (obarray) |
7c79a684 | 2321 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
2322 | { |
2323 | obarray = check_obarray (obarray); | |
2324 | obsize = XVECTOR (obarray)->size; | |
2325 | } | |
519418b3 RS |
2326 | /* This is sometimes needed in the middle of GC. */ |
2327 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 2328 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 2329 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
2330 | hash %= obsize; |
2331 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 2332 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
2333 | if (XFASTINT (bucket) == 0) |
2334 | ; | |
cfff016d | 2335 | else if (!SYMBOLP (bucket)) |
078e7b4a | 2336 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
2337 | else |
2338 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 2339 | { |
e28552a4 RS |
2340 | if (XSYMBOL (tail)->name->size_byte == size_byte |
2341 | && XSYMBOL (tail)->name->size == size | |
2342 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
2343 | return tail; |
2344 | else if (XSYMBOL (tail)->next == 0) | |
2345 | break; | |
2346 | } | |
1805de4f | 2347 | XSETINT (tem, hash); |
078e7b4a JB |
2348 | return tem; |
2349 | } | |
2350 | ||
2351 | static int | |
2352 | hash_string (ptr, len) | |
2353 | unsigned char *ptr; | |
2354 | int len; | |
2355 | { | |
2356 | register unsigned char *p = ptr; | |
2357 | register unsigned char *end = p + len; | |
2358 | register unsigned char c; | |
2359 | register int hash = 0; | |
2360 | ||
2361 | while (p != end) | |
2362 | { | |
2363 | c = *p++; | |
2364 | if (c >= 0140) c -= 40; | |
2365 | hash = ((hash<<3) + (hash>>28) + c); | |
2366 | } | |
2367 | return hash & 07777777777; | |
2368 | } | |
d007f5c8 | 2369 | \f |
078e7b4a JB |
2370 | void |
2371 | map_obarray (obarray, fn, arg) | |
2372 | Lisp_Object obarray; | |
d5b28a9d | 2373 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
2374 | Lisp_Object arg; |
2375 | { | |
2376 | register int i; | |
2377 | register Lisp_Object tail; | |
2378 | CHECK_VECTOR (obarray, 1); | |
2379 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
2380 | { | |
2381 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 2382 | if (SYMBOLP (tail)) |
078e7b4a JB |
2383 | while (1) |
2384 | { | |
2385 | (*fn) (tail, arg); | |
2386 | if (XSYMBOL (tail)->next == 0) | |
2387 | break; | |
1805de4f | 2388 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
2389 | } |
2390 | } | |
2391 | } | |
2392 | ||
d5b28a9d | 2393 | void |
078e7b4a JB |
2394 | mapatoms_1 (sym, function) |
2395 | Lisp_Object sym, function; | |
2396 | { | |
2397 | call1 (function, sym); | |
2398 | } | |
2399 | ||
2400 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
2401 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
2402 | OBARRAY defaults to the value of `obarray'.") | |
2403 | (function, obarray) | |
2404 | Lisp_Object function, obarray; | |
2405 | { | |
2406 | Lisp_Object tem; | |
2407 | ||
265a9e55 | 2408 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2409 | obarray = check_obarray (obarray); |
2410 | ||
2411 | map_obarray (obarray, mapatoms_1, function); | |
2412 | return Qnil; | |
2413 | } | |
2414 | ||
5e88a39e | 2415 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
2416 | |
2417 | void | |
2418 | init_obarray () | |
2419 | { | |
2420 | Lisp_Object oblength; | |
2421 | int hash; | |
2422 | Lisp_Object *tem; | |
2423 | ||
baf69866 | 2424 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 2425 | |
e28552a4 | 2426 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3)); |
078e7b4a JB |
2427 | Vobarray = Fmake_vector (oblength, make_number (0)); |
2428 | initial_obarray = Vobarray; | |
2429 | staticpro (&initial_obarray); | |
2430 | /* Intern nil in the obarray */ | |
4ad679f9 | 2431 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
2432 | /* These locals are to kludge around a pyramid compiler bug. */ |
2433 | hash = hash_string ("nil", 3); | |
2434 | /* Separate statement here to avoid VAXC bug. */ | |
2435 | hash %= OBARRAY_SIZE; | |
2436 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
2437 | *tem = Qnil; | |
2438 | ||
e28552a4 | 2439 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7)); |
078e7b4a JB |
2440 | XSYMBOL (Qnil)->function = Qunbound; |
2441 | XSYMBOL (Qunbound)->value = Qunbound; | |
2442 | XSYMBOL (Qunbound)->function = Qunbound; | |
2443 | ||
2444 | Qt = intern ("t"); | |
2445 | XSYMBOL (Qnil)->value = Qnil; | |
2446 | XSYMBOL (Qnil)->plist = Qnil; | |
2447 | XSYMBOL (Qt)->value = Qt; | |
2448 | ||
2449 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
2450 | Vpurify_flag = Qt; | |
2451 | ||
2452 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 2453 | staticpro (&Qvariable_documentation); |
078e7b4a JB |
2454 | |
2455 | read_buffer_size = 100; | |
2456 | read_buffer = (char *) malloc (read_buffer_size); | |
2457 | } | |
2458 | \f | |
2459 | void | |
2460 | defsubr (sname) | |
2461 | struct Lisp_Subr *sname; | |
2462 | { | |
2463 | Lisp_Object sym; | |
2464 | sym = intern (sname->symbol_name); | |
1805de4f | 2465 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
2466 | } |
2467 | ||
2468 | #ifdef NOTDEF /* use fset in subr.el now */ | |
2469 | void | |
2470 | defalias (sname, string) | |
2471 | struct Lisp_Subr *sname; | |
2472 | char *string; | |
2473 | { | |
2474 | Lisp_Object sym; | |
2475 | sym = intern (string); | |
1805de4f | 2476 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
2477 | } |
2478 | #endif /* NOTDEF */ | |
2479 | ||
078e7b4a | 2480 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 2481 | to a C variable of type int. Sample call: */ |
950c215d | 2482 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 2483 | void |
e9e00ff2 | 2484 | defvar_int (namestring, address) |
078e7b4a JB |
2485 | char *namestring; |
2486 | int *address; | |
078e7b4a | 2487 | { |
1a0f90f7 | 2488 | Lisp_Object sym, val; |
078e7b4a | 2489 | sym = intern (namestring); |
1a0f90f7 | 2490 | val = allocate_misc (); |
47e28b2c | 2491 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 2492 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 2493 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2494 | } |
2495 | ||
2496 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 2497 | NIL if address contains 0 */ |
078e7b4a | 2498 | void |
e9e00ff2 | 2499 | defvar_bool (namestring, address) |
078e7b4a JB |
2500 | char *namestring; |
2501 | int *address; | |
078e7b4a | 2502 | { |
1a0f90f7 | 2503 | Lisp_Object sym, val; |
078e7b4a | 2504 | sym = intern (namestring); |
1a0f90f7 | 2505 | val = allocate_misc (); |
47e28b2c | 2506 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 2507 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 2508 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2509 | } |
2510 | ||
1a0f90f7 KH |
2511 | /* Similar but define a variable whose value is the Lisp Object stored |
2512 | at address. Two versions: with and without gc-marking of the C | |
2513 | variable. The nopro version is used when that variable will be | |
2514 | gc-marked for some other reason, since marking the same slot twice | |
2515 | can cause trouble with strings. */ | |
078e7b4a | 2516 | void |
1a0f90f7 | 2517 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
2518 | char *namestring; |
2519 | Lisp_Object *address; | |
078e7b4a | 2520 | { |
1a0f90f7 | 2521 | Lisp_Object sym, val; |
078e7b4a | 2522 | sym = intern (namestring); |
1a0f90f7 | 2523 | val = allocate_misc (); |
47e28b2c | 2524 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 2525 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 2526 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2527 | } |
2528 | ||
078e7b4a | 2529 | void |
1a0f90f7 | 2530 | defvar_lisp (namestring, address) |
078e7b4a JB |
2531 | char *namestring; |
2532 | Lisp_Object *address; | |
078e7b4a | 2533 | { |
1a0f90f7 KH |
2534 | defvar_lisp_nopro (namestring, address); |
2535 | staticpro (address); | |
078e7b4a JB |
2536 | } |
2537 | ||
2538 | #ifndef standalone | |
2539 | ||
2540 | /* Similar but define a variable whose value is the Lisp Object stored in | |
2836d9a4 KH |
2541 | the current buffer. address is the address of the slot in the buffer |
2542 | that is current now. */ | |
078e7b4a JB |
2543 | |
2544 | void | |
4360b0c6 | 2545 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
2546 | char *namestring; |
2547 | Lisp_Object *address; | |
4360b0c6 | 2548 | Lisp_Object type; |
078e7b4a JB |
2549 | char *doc; |
2550 | { | |
1a0f90f7 | 2551 | Lisp_Object sym, val; |
078e7b4a JB |
2552 | int offset; |
2553 | extern struct buffer buffer_local_symbols; | |
2554 | ||
2555 | sym = intern (namestring); | |
1a0f90f7 | 2556 | val = allocate_misc (); |
078e7b4a JB |
2557 | offset = (char *)address - (char *)current_buffer; |
2558 | ||
47e28b2c | 2559 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 2560 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 2561 | XSYMBOL (sym)->value = val; |
078e7b4a | 2562 | *(Lisp_Object *)(offset + (char *)&buffer_local_symbols) = sym; |
4360b0c6 | 2563 | *(Lisp_Object *)(offset + (char *)&buffer_local_types) = type; |
2836d9a4 | 2564 | if (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)) == 0) |
078e7b4a JB |
2565 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
2566 | slot of buffer_local_flags */ | |
2567 | abort (); | |
2568 | } | |
2569 | ||
2570 | #endif /* standalone */ | |
950c215d KH |
2571 | |
2572 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 2573 | at a particular offset in the current kboard object. */ |
950c215d KH |
2574 | |
2575 | void | |
4ac38690 | 2576 | defvar_kboard (namestring, offset) |
950c215d KH |
2577 | char *namestring; |
2578 | int offset; | |
2579 | { | |
2580 | Lisp_Object sym, val; | |
2581 | sym = intern (namestring); | |
2582 | val = allocate_misc (); | |
47e28b2c | 2583 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 2584 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
2585 | XSYMBOL (sym)->value = val; |
2586 | } | |
078e7b4a | 2587 | \f |
11938f10 KH |
2588 | /* Record the value of load-path used at the start of dumping |
2589 | so we can see if the site changed it later during dumping. */ | |
2590 | static Lisp_Object dump_path; | |
2591 | ||
d5b28a9d | 2592 | void |
279499f0 | 2593 | init_lread () |
078e7b4a | 2594 | { |
46947372 | 2595 | char *normal; |
e73997a1 | 2596 | int turn_off_warning = 0; |
078e7b4a | 2597 | |
9dff7c53 RS |
2598 | #ifdef HAVE_SETLOCALE |
2599 | /* Make sure numbers are parsed as we expect. */ | |
2600 | setlocale (LC_NUMERIC, "C"); | |
2601 | #endif /* HAVE_SETLOCALE */ | |
2602 | ||
279499f0 | 2603 | /* Compute the default load-path. */ |
46947372 JB |
2604 | #ifdef CANNOT_DUMP |
2605 | normal = PATH_LOADSEARCH; | |
e065a56e | 2606 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
2607 | #else |
2608 | if (NILP (Vpurify_flag)) | |
2609 | normal = PATH_LOADSEARCH; | |
279499f0 | 2610 | else |
46947372 | 2611 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 2612 | |
46947372 JB |
2613 | /* In a dumped Emacs, we normally have to reset the value of |
2614 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
2615 | uses ../lisp, instead of the path of the installed elisp | |
2616 | libraries. However, if it appears that Vload_path was changed | |
2617 | from the default before dumping, don't override that value. */ | |
4746118a JB |
2618 | if (initialized) |
2619 | { | |
4746118a | 2620 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
2621 | { |
2622 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 2623 | if (!NILP (Vinstallation_directory)) |
80667d53 | 2624 | { |
74180aa4 | 2625 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
2626 | installation dir, if it exists. */ |
2627 | Lisp_Object tem, tem1; | |
74180aa4 RS |
2628 | tem = Fexpand_file_name (build_string ("lisp"), |
2629 | Vinstallation_directory); | |
3a3056e5 RS |
2630 | tem1 = Ffile_exists_p (tem); |
2631 | if (!NILP (tem1)) | |
2632 | { | |
2633 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
2634 | { |
2635 | turn_off_warning = 1; | |
2636 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2637 | } | |
3a3056e5 RS |
2638 | } |
2639 | else | |
2640 | /* That dir doesn't exist, so add the build-time | |
2641 | Lisp dirs instead. */ | |
2642 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 2643 | |
9fbc0116 RS |
2644 | /* Add leim under the installation dir, if it exists. */ |
2645 | tem = Fexpand_file_name (build_string ("leim"), | |
2646 | Vinstallation_directory); | |
2647 | tem1 = Ffile_exists_p (tem); | |
2648 | if (!NILP (tem1)) | |
2649 | { | |
2650 | if (NILP (Fmember (tem, Vload_path))) | |
2651 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2652 | } | |
2653 | ||
c478f98c RS |
2654 | /* Add site-list under the installation dir, if it exists. */ |
2655 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
2656 | Vinstallation_directory); | |
2657 | tem1 = Ffile_exists_p (tem); | |
2658 | if (!NILP (tem1)) | |
2659 | { | |
2660 | if (NILP (Fmember (tem, Vload_path))) | |
2661 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2662 | } | |
0f337465 RS |
2663 | |
2664 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
2665 | and it is run from where it was built, add to load-path |
2666 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
2667 | |
2668 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
2669 | { | |
33046fc9 RS |
2670 | Lisp_Object tem2; |
2671 | ||
0f337465 RS |
2672 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
2673 | Vinstallation_directory); | |
2674 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
2675 | |
2676 | /* Don't be fooled if they moved the entire source tree | |
2677 | AFTER dumping Emacs. If the build directory is indeed | |
2678 | different from the source dir, src/Makefile.in and | |
2679 | src/Makefile will not be found together. */ | |
2680 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
2681 | Vinstallation_directory); | |
2682 | tem2 = Ffile_exists_p (tem); | |
2683 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
2684 | { |
2685 | tem = Fexpand_file_name (build_string ("lisp"), | |
2686 | Vsource_directory); | |
2687 | ||
2688 | if (NILP (Fmember (tem, Vload_path))) | |
2689 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2690 | ||
9fbc0116 RS |
2691 | tem = Fexpand_file_name (build_string ("leim"), |
2692 | Vsource_directory); | |
2693 | ||
2694 | if (NILP (Fmember (tem, Vload_path))) | |
2695 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2696 | ||
0f337465 RS |
2697 | tem = Fexpand_file_name (build_string ("site-lisp"), |
2698 | Vsource_directory); | |
2699 | ||
2700 | if (NILP (Fmember (tem, Vload_path))) | |
2701 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2702 | } | |
2703 | } | |
80667d53 RS |
2704 | } |
2705 | } | |
4746118a JB |
2706 | } |
2707 | else | |
11938f10 | 2708 | { |
7b396c6c RS |
2709 | /* NORMAL refers to the lisp dir in the source directory. */ |
2710 | /* We used to add ../lisp at the front here, but | |
2711 | that caused trouble because it was copied from dump_path | |
2712 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
2713 | It should be unnecessary. */ | |
2714 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
2715 | dump_path = Vload_path; |
2716 | } | |
46947372 | 2717 | #endif |
279499f0 | 2718 | |
317073d5 RS |
2719 | #ifndef WINDOWSNT |
2720 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
2721 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 2722 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
2723 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
2724 | ||
078e7b4a | 2725 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
2726 | if (!turn_off_warning) |
2727 | { | |
2728 | Lisp_Object path_tail; | |
078e7b4a | 2729 | |
e73997a1 RS |
2730 | for (path_tail = Vload_path; |
2731 | !NILP (path_tail); | |
2732 | path_tail = XCONS (path_tail)->cdr) | |
2733 | { | |
2734 | Lisp_Object dirfile; | |
2735 | dirfile = Fcar (path_tail); | |
2736 | if (STRINGP (dirfile)) | |
2737 | { | |
2738 | dirfile = Fdirectory_file_name (dirfile); | |
2739 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c RS |
2740 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
2741 | XCONS (path_tail)->car); | |
e73997a1 RS |
2742 | } |
2743 | } | |
2744 | } | |
317073d5 | 2745 | #endif /* WINDOWSNT */ |
46947372 JB |
2746 | |
2747 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
2748 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 2749 | #ifndef CANNOT_DUMP |
46947372 JB |
2750 | if (NILP (Vpurify_flag) |
2751 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 2752 | #endif |
279499f0 | 2753 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
2754 | |
2755 | Vvalues = Qnil; | |
2756 | ||
078e7b4a | 2757 | load_in_progress = 0; |
4e53f562 | 2758 | Vload_file_name = Qnil; |
d2c6be7f RS |
2759 | |
2760 | load_descriptor_list = Qnil; | |
078e7b4a JB |
2761 | } |
2762 | ||
85496b8c RS |
2763 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
2764 | does not exist. Print it on stderr and put it in *Message*. */ | |
2765 | ||
d5b28a9d | 2766 | void |
85496b8c RS |
2767 | dir_warning (format, dirname) |
2768 | char *format; | |
2769 | Lisp_Object dirname; | |
2770 | { | |
2771 | char *buffer | |
2772 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
2773 | ||
2774 | fprintf (stderr, format, XSTRING (dirname)->data); | |
2775 | sprintf (buffer, format, XSTRING (dirname)->data); | |
e28552a4 | 2776 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); |
85496b8c RS |
2777 | } |
2778 | ||
078e7b4a | 2779 | void |
279499f0 | 2780 | syms_of_lread () |
078e7b4a JB |
2781 | { |
2782 | defsubr (&Sread); | |
2783 | defsubr (&Sread_from_string); | |
2784 | defsubr (&Sintern); | |
2785 | defsubr (&Sintern_soft); | |
d007f5c8 | 2786 | defsubr (&Sunintern); |
078e7b4a | 2787 | defsubr (&Sload); |
228d4b1c | 2788 | defsubr (&Seval_buffer); |
078e7b4a JB |
2789 | defsubr (&Seval_region); |
2790 | defsubr (&Sread_char); | |
2791 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 2792 | defsubr (&Sread_event); |
078e7b4a JB |
2793 | defsubr (&Sget_file_char); |
2794 | defsubr (&Smapatoms); | |
2795 | ||
2796 | DEFVAR_LISP ("obarray", &Vobarray, | |
2797 | "Symbol table for use by `intern' and `read'.\n\ | |
2798 | It is a vector whose length ought to be prime for best results.\n\ | |
2799 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
2800 | to find all the symbols in an obarray, use `mapatoms'."); | |
2801 | ||
2802 | DEFVAR_LISP ("values", &Vvalues, | |
2803 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
2804 | Order is reverse chronological."); | |
2805 | ||
2806 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
2807 | "Stream for read to get input from.\n\ | |
2808 | See documentation of `read' for possible values."); | |
2809 | Vstandard_input = Qt; | |
2810 | ||
2811 | DEFVAR_LISP ("load-path", &Vload_path, | |
2812 | "*List of directories to search for files to load.\n\ | |
2813 | Each element is a string (directory name) or nil (try default directory).\n\ | |
2814 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
692f86ad | 2815 | otherwise to default specified by file `paths.h' when Emacs was built."); |
078e7b4a JB |
2816 | |
2817 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
2818 | "Non-nil iff inside of `load'."); | |
2819 | ||
2820 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
2821 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
2822 | Each element looks like (FILENAME FORMS...).\n\ | |
2823 | When `load' is run and the file-name argument is FILENAME,\n\ | |
2824 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
2825 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
2826 | with no directory specified, since that is how `load' is normally called.\n\ | |
2827 | An error in FORMS does not undo the load,\n\ | |
2828 | but does prevent execution of the rest of the FORMS."); | |
2829 | Vafter_load_alist = Qnil; | |
2830 | ||
ae321d28 RS |
2831 | DEFVAR_LISP ("load-history", &Vload_history, |
2832 | "Alist mapping source file names to symbols and features.\n\ | |
2833 | Each alist element is a list that starts with a file name,\n\ | |
2834 | except for one element (optional) that starts with nil and describes\n\ | |
2835 | definitions evaluated from buffers not visiting files.\n\ | |
2836 | The remaining elements of each list are symbols defined as functions\n\ | |
2837 | or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'."); | |
2838 | Vload_history = Qnil; | |
2839 | ||
20ea2964 RS |
2840 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
2841 | "Full name of file being loaded by `load'."); | |
2842 | Vload_file_name = Qnil; | |
2843 | ||
8a1f1537 RS |
2844 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
2845 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
2846 | Vcurrent_load_list = Qnil; |
2847 | ||
84a15045 RS |
2848 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
2849 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
2850 | The default is nil, which means use the function `read'."); | |
2851 | Vload_read_function = Qnil; | |
2852 | ||
fe0e03f3 KH |
2853 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
2854 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
2855 | This function is for doing code conversion before reading the source file.\n\ | |
2856 | If nil, loading is done without any code conversion.\n\ | |
2857 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
2858 | FULLNAME is the full name of FILE.\n\ | |
2859 | See `load' for the meaning of the remaining arguments."); | |
2860 | Vload_source_file_function = Qnil; | |
2861 | ||
b2a30870 RS |
2862 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
2863 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
2864 | This is useful when the file being loaded is a temporary copy."); | |
2865 | load_force_doc_strings = 0; | |
2866 | ||
1521a8fa RS |
2867 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
2868 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
2869 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
2870 | Vsource_directory |
2871 | = Fexpand_file_name (build_string ("../"), | |
2872 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
2873 | ||
4b104c41 RS |
2874 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
2875 | "List of files that were preloaded (when dumping Emacs)."); | |
2876 | Vpreloaded_file_list = Qnil; | |
2877 | ||
a90ba1e2 KH |
2878 | /* Vsource_directory was initialized in init_lread. */ |
2879 | ||
d2c6be7f RS |
2880 | load_descriptor_list = Qnil; |
2881 | staticpro (&load_descriptor_list); | |
2882 | ||
8a1f1537 RS |
2883 | Qcurrent_load_list = intern ("current-load-list"); |
2884 | staticpro (&Qcurrent_load_list); | |
2885 | ||
078e7b4a JB |
2886 | Qstandard_input = intern ("standard-input"); |
2887 | staticpro (&Qstandard_input); | |
2888 | ||
2889 | Qread_char = intern ("read-char"); | |
2890 | staticpro (&Qread_char); | |
2891 | ||
2892 | Qget_file_char = intern ("get-file-char"); | |
2893 | staticpro (&Qget_file_char); | |
7bd279cd | 2894 | |
17634846 RS |
2895 | Qbackquote = intern ("`"); |
2896 | staticpro (&Qbackquote); | |
2897 | Qcomma = intern (","); | |
2898 | staticpro (&Qcomma); | |
2899 | Qcomma_at = intern (",@"); | |
2900 | staticpro (&Qcomma_at); | |
2901 | Qcomma_dot = intern (",."); | |
2902 | staticpro (&Qcomma_dot); | |
2903 | ||
74549846 RS |
2904 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
2905 | staticpro (&Qinhibit_file_name_operation); | |
2906 | ||
7bd279cd RS |
2907 | Qascii_character = intern ("ascii-character"); |
2908 | staticpro (&Qascii_character); | |
c2225d00 | 2909 | |
2b6cae0c RS |
2910 | Qfunction = intern ("function"); |
2911 | staticpro (&Qfunction); | |
2912 | ||
c2225d00 RS |
2913 | Qload = intern ("load"); |
2914 | staticpro (&Qload); | |
20ea2964 RS |
2915 | |
2916 | Qload_file_name = intern ("load-file-name"); | |
2917 | staticpro (&Qload_file_name); | |
11938f10 KH |
2918 | |
2919 | staticpro (&dump_path); | |
4ad679f9 EN |
2920 | |
2921 | staticpro (&read_objects); | |
2922 | read_objects = Qnil; | |
078e7b4a | 2923 | } |