Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
31c8f881 | 2 | Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 1998 |
33046fc9 | 3 | Free Software Foundation, Inc. |
078e7b4a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
46947372 | 9 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
078e7b4a JB |
21 | |
22 | ||
98280b76 | 23 | #include <config.h> |
078e7b4a JB |
24 | #include <stdio.h> |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <sys/file.h> | |
2c1b5dbe | 28 | #include <errno.h> |
078e7b4a JB |
29 | #include "lisp.h" |
30 | ||
31 | #ifndef standalone | |
32 | #include "buffer.h" | |
fe0e03f3 | 33 | #include "charset.h" |
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 | ||
c1a2f60a AS |
51 | #ifdef HAVE_UNISTD_H |
52 | #include <unistd.h> | |
53 | #endif | |
54 | ||
078e7b4a JB |
55 | #ifndef X_OK |
56 | #define X_OK 01 | |
57 | #endif | |
58 | ||
59 | #ifdef LISP_FLOAT_TYPE | |
93b91208 JB |
60 | #ifdef STDC_HEADERS |
61 | #include <stdlib.h> | |
62 | #endif | |
23a71bd6 | 63 | |
078e7b4a JB |
64 | #include <math.h> |
65 | #endif /* LISP_FLOAT_TYPE */ | |
66 | ||
c011e9a5 RS |
67 | #ifdef HAVE_SETLOCALE |
68 | #include <locale.h> | |
69 | #endif /* HAVE_SETLOCALE */ | |
70 | ||
f7d279f0 RS |
71 | #ifndef O_RDONLY |
72 | #define O_RDONLY 0 | |
73 | #endif | |
74 | ||
2c1b5dbe KH |
75 | extern int errno; |
76 | ||
8a1f1537 | 77 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 78 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 79 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 80 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 81 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
82 | |
83 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 84 | extern Lisp_Object Qfile_exists_p; |
078e7b4a JB |
85 | |
86 | /* non-zero if inside `load' */ | |
87 | int load_in_progress; | |
88 | ||
1521a8fa RS |
89 | /* Directory in which the sources were found. */ |
90 | Lisp_Object Vsource_directory; | |
91 | ||
078e7b4a JB |
92 | /* Search path for files to be loaded. */ |
93 | Lisp_Object Vload_path; | |
94 | ||
ae321d28 RS |
95 | /* This is the user-visible association list that maps features to |
96 | lists of defs in their load files. */ | |
97 | Lisp_Object Vload_history; | |
98 | ||
20ea2964 | 99 | /* This is used to build the load history. */ |
ae321d28 RS |
100 | Lisp_Object Vcurrent_load_list; |
101 | ||
4b104c41 RS |
102 | /* List of files that were preloaded. */ |
103 | Lisp_Object Vpreloaded_file_list; | |
104 | ||
20ea2964 RS |
105 | /* Name of file actually being read by `load'. */ |
106 | Lisp_Object Vload_file_name; | |
107 | ||
84a15045 RS |
108 | /* Function to use for reading, in `load' and friends. */ |
109 | Lisp_Object Vload_read_function; | |
110 | ||
4ad679f9 EN |
111 | /* The association list of objects read with the #n=object form. |
112 | Each member of the list has the form (n . object), and is used to | |
113 | look up the object for the corresponding #n# construct. | |
114 | It must be set to nil before all top-level calls to read0. */ | |
115 | Lisp_Object read_objects; | |
116 | ||
b2a30870 RS |
117 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
118 | static int load_force_doc_strings; | |
119 | ||
94e554db RS |
120 | /* Nonzero means read should convert strings to unibyte. */ |
121 | static int load_convert_to_unibyte; | |
122 | ||
fe0e03f3 KH |
123 | /* Function to use for loading an Emacs lisp source file (not |
124 | compiled) instead of readevalloop. */ | |
125 | Lisp_Object Vload_source_file_function; | |
126 | ||
d2c6be7f RS |
127 | /* List of descriptors now open for Fload. */ |
128 | static Lisp_Object load_descriptor_list; | |
129 | ||
b2a30870 | 130 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
131 | static FILE *instream; |
132 | ||
133 | /* When nonzero, read conses in pure space */ | |
134 | static int read_pure; | |
135 | ||
b2a30870 | 136 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 137 | static int read_from_string_index; |
bed23cb2 | 138 | static int read_from_string_index_byte; |
078e7b4a | 139 | static int read_from_string_limit; |
17634846 | 140 | |
6f7f43d5 RS |
141 | /* Number of bytes left to read in the buffer character |
142 | that `readchar' has already advanced over. */ | |
143 | static int readchar_backlog; | |
144 | ||
d49f0c1a KH |
145 | /* This contains the last string skipped with #@, but only on some systems. |
146 | On other systems we can't put the string here. */ | |
b2a30870 RS |
147 | static char *saved_doc_string; |
148 | /* Length of buffer allocated in saved_doc_string. */ | |
149 | static int saved_doc_string_size; | |
150 | /* Length of actual data in saved_doc_string. */ | |
151 | static int saved_doc_string_length; | |
152 | /* This is the file position that string came from. */ | |
153 | static int saved_doc_string_position; | |
154 | ||
17634846 RS |
155 | /* Nonzero means inside a new-style backquote |
156 | with no surrounding parentheses. | |
157 | Fread initializes this to zero, so we need not specbind it | |
158 | or worry about what happens to it when there is an error. */ | |
159 | static int new_backquote_flag; | |
078e7b4a JB |
160 | \f |
161 | /* Handle unreading and rereading of characters. | |
162 | Write READCHAR to read a character, | |
fe0e03f3 KH |
163 | UNREAD(c) to unread c to be read again. |
164 | ||
165 | These macros actually read/unread a byte code, multibyte characters | |
166 | are not handled here. The caller should manage them if necessary. | |
167 | */ | |
078e7b4a JB |
168 | |
169 | #define READCHAR readchar (readcharfun) | |
170 | #define UNREAD(c) unreadchar (readcharfun, c) | |
171 | ||
172 | static int | |
173 | readchar (readcharfun) | |
174 | Lisp_Object readcharfun; | |
175 | { | |
176 | Lisp_Object tem; | |
078e7b4a JB |
177 | register int c, mpos; |
178 | ||
cfff016d | 179 | if (BUFFERP (readcharfun)) |
078e7b4a | 180 | { |
bed23cb2 | 181 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 182 | |
bed23cb2 RS |
183 | int pt_byte = BUF_PT_BYTE (inbuffer); |
184 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 185 | |
bed23cb2 RS |
186 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
187 | return -1; | |
078e7b4a | 188 | |
bed23cb2 RS |
189 | if (! NILP (inbuffer->enable_multibyte_characters)) |
190 | { | |
191 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); | |
192 | BUF_INC_POS (inbuffer, pt_byte); | |
193 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
194 | } | |
195 | else | |
196 | { | |
197 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
198 | pt_byte++; | |
6f7f43d5 | 199 | } |
bed23cb2 | 200 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 201 | |
bed23cb2 | 202 | return c; |
078e7b4a | 203 | } |
cfff016d | 204 | if (MARKERP (readcharfun)) |
078e7b4a | 205 | { |
bed23cb2 | 206 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 207 | |
bed23cb2 RS |
208 | int bytepos = marker_byte_position (readcharfun); |
209 | int orig_bytepos = bytepos; | |
6f7f43d5 | 210 | |
bed23cb2 RS |
211 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
212 | return -1; | |
6f7f43d5 | 213 | |
bed23cb2 RS |
214 | if (! NILP (inbuffer->enable_multibyte_characters)) |
215 | { | |
216 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); | |
217 | BUF_INC_POS (inbuffer, bytepos); | |
218 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
219 | } | |
220 | else | |
221 | { | |
222 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
223 | bytepos++; | |
6f7f43d5 RS |
224 | } |
225 | ||
bed23cb2 RS |
226 | XMARKER (readcharfun)->bytepos = bytepos; |
227 | XMARKER (readcharfun)->charpos++; | |
228 | ||
229 | return c; | |
078e7b4a JB |
230 | } |
231 | if (EQ (readcharfun, Qget_file_char)) | |
2c1b5dbe KH |
232 | { |
233 | c = getc (instream); | |
234 | #ifdef EINTR | |
235 | /* Interrupted reads have been observed while reading over the network */ | |
236 | while (c == EOF && ferror (instream) && errno == EINTR) | |
237 | { | |
238 | clearerr (instream); | |
239 | c = getc (instream); | |
240 | } | |
241 | #endif | |
242 | return c; | |
243 | } | |
078e7b4a | 244 | |
cfff016d | 245 | if (STRINGP (readcharfun)) |
078e7b4a | 246 | { |
bed23cb2 | 247 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 248 | c = -1; |
bed23cb2 RS |
249 | else if (STRING_MULTIBYTE (readcharfun)) |
250 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, | |
251 | read_from_string_index, | |
252 | read_from_string_index_byte); | |
253 | else | |
254 | c = XSTRING (readcharfun)->data[read_from_string_index++]; | |
6f7f43d5 | 255 | |
078e7b4a JB |
256 | return c; |
257 | } | |
258 | ||
259 | tem = call0 (readcharfun); | |
260 | ||
265a9e55 | 261 | if (NILP (tem)) |
078e7b4a JB |
262 | return -1; |
263 | return XINT (tem); | |
264 | } | |
265 | ||
266 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
267 | If the stream is a user function, call it with the char as argument. */ | |
268 | ||
269 | static void | |
270 | unreadchar (readcharfun, c) | |
271 | Lisp_Object readcharfun; | |
272 | int c; | |
273 | { | |
92fddec9 KH |
274 | if (c == -1) |
275 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
276 | since readchar didn't advance it when we read it. */ | |
277 | ; | |
cfff016d | 278 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 279 | { |
bed23cb2 RS |
280 | struct buffer *b = XBUFFER (readcharfun); |
281 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 282 | |
bed23cb2 RS |
283 | BUF_PT (b)--; |
284 | if (! NILP (b->enable_multibyte_characters)) | |
285 | BUF_DEC_POS (b, bytepos); | |
286 | else | |
287 | bytepos--; | |
d7760ca9 | 288 | |
bed23cb2 | 289 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 290 | } |
cfff016d | 291 | else if (MARKERP (readcharfun)) |
d7760ca9 | 292 | { |
bed23cb2 RS |
293 | struct buffer *b = XMARKER (readcharfun)->buffer; |
294 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 295 | |
bed23cb2 RS |
296 | XMARKER (readcharfun)->charpos--; |
297 | if (! NILP (b->enable_multibyte_characters)) | |
298 | BUF_DEC_POS (b, bytepos); | |
299 | else | |
300 | bytepos--; | |
d7760ca9 | 301 | |
bed23cb2 | 302 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 303 | } |
cfff016d | 304 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
305 | { |
306 | read_from_string_index--; | |
307 | read_from_string_index_byte | |
308 | = string_char_to_byte (readcharfun, read_from_string_index); | |
309 | } | |
078e7b4a JB |
310 | else if (EQ (readcharfun, Qget_file_char)) |
311 | ungetc (c, instream); | |
312 | else | |
313 | call1 (readcharfun, make_number (c)); | |
314 | } | |
315 | ||
316 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 317 | static int read_multibyte (); |
078e7b4a | 318 | \f |
bed23cb2 | 319 | /* Get a character from the tty. */ |
078e7b4a | 320 | |
3d9b22be JB |
321 | extern Lisp_Object read_char (); |
322 | ||
f42be754 JB |
323 | /* Read input events until we get one that's acceptable for our purposes. |
324 | ||
325 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
326 | until we get a character we like, and then stuffed into | |
327 | unread_switch_frame. | |
328 | ||
329 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
330 | if the unmodified version of the symbol has a Qascii_character | |
331 | property, and use that character, if present. | |
332 | ||
333 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
334 | get isn't an ASCII character with modifiers. If it's zero but | |
335 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
336 | character. */ | |
cc39bc38 | 337 | |
f42be754 JB |
338 | Lisp_Object |
339 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii) | |
340 | int no_switch_frame, ascii_required, error_nonascii; | |
341 | { | |
342 | #ifdef standalone | |
343 | return make_number (getchar ()); | |
344 | #else | |
153a17b7 KH |
345 | register Lisp_Object val, delayed_switch_frame; |
346 | ||
347 | delayed_switch_frame = Qnil; | |
f42be754 JB |
348 | |
349 | /* Read until we get an acceptable event. */ | |
350 | retry: | |
351 | val = read_char (0, 0, 0, Qnil, 0); | |
352 | ||
cfff016d | 353 | if (BUFFERP (val)) |
6c82d689 KH |
354 | goto retry; |
355 | ||
f42be754 | 356 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 357 | character. This is better than signaling an error just because |
f42be754 JB |
358 | the last characters were typed to a separate minibuffer frame, |
359 | for example. Eventually, some code which can deal with | |
360 | switch-frame events will read it and process it. */ | |
361 | if (no_switch_frame | |
362 | && EVENT_HAS_PARAMETERS (val) | |
363 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
364 | { | |
365 | delayed_switch_frame = val; | |
366 | goto retry; | |
367 | } | |
368 | ||
369 | if (ascii_required) | |
370 | { | |
371 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 372 | if (SYMBOLP (val)) |
f42be754 JB |
373 | { |
374 | Lisp_Object tem, tem1, tem2; | |
375 | tem = Fget (val, Qevent_symbol_element_mask); | |
376 | if (!NILP (tem)) | |
377 | { | |
378 | tem1 = Fget (Fcar (tem), Qascii_character); | |
379 | /* Merge this symbol's modifier bits | |
380 | with the ASCII equivalent of its basic code. */ | |
381 | if (!NILP (tem1)) | |
baf69866 | 382 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
383 | } |
384 | } | |
385 | ||
386 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 387 | if (!INTEGERP (val)) |
f42be754 JB |
388 | { |
389 | if (error_nonascii) | |
390 | { | |
1ec84625 | 391 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
392 | error ("Non-character input-event"); |
393 | } | |
394 | else | |
395 | goto retry; | |
396 | } | |
397 | } | |
398 | ||
399 | if (! NILP (delayed_switch_frame)) | |
400 | unread_switch_frame = delayed_switch_frame; | |
401 | ||
402 | return val; | |
403 | #endif | |
404 | } | |
405 | ||
078e7b4a JB |
406 | DEFUN ("read-char", Fread_char, Sread_char, 0, 0, 0, |
407 | "Read a character from the command input (keyboard or macro).\n\ | |
e51e47f7 JB |
408 | It is returned as a number.\n\ |
409 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
410 | click or function key event), `read-char' signals an error. As an\n\ |
411 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
412 | be read.\n\ | |
413 | If you want to read non-character events, or ignore them, call\n\ | |
414 | `read-event' or `read-char-exclusive' instead.") | |
078e7b4a JB |
415 | () |
416 | { | |
f42be754 | 417 | return read_filtered_event (1, 1, 1); |
078e7b4a JB |
418 | } |
419 | ||
078e7b4a JB |
420 | DEFUN ("read-event", Fread_event, Sread_event, 0, 0, 0, |
421 | "Read an event object from the input stream.") | |
422 | () | |
423 | { | |
f42be754 | 424 | return read_filtered_event (0, 0, 0); |
078e7b4a JB |
425 | } |
426 | ||
427 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 0, 0, | |
428 | "Read a character from the command input (keyboard or macro).\n\ | |
cc39bc38 | 429 | It is returned as a number. Non-character events are ignored.") |
078e7b4a JB |
430 | () |
431 | { | |
f42be754 | 432 | return read_filtered_event (1, 1, 0); |
078e7b4a | 433 | } |
078e7b4a JB |
434 | |
435 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
436 | "Don't use this yourself.") | |
437 | () | |
438 | { | |
439 | register Lisp_Object val; | |
1805de4f | 440 | XSETINT (val, getc (instream)); |
078e7b4a JB |
441 | return val; |
442 | } | |
443 | \f | |
444 | static void readevalloop (); | |
445 | static Lisp_Object load_unwind (); | |
d2c6be7f | 446 | static Lisp_Object load_descriptor_unwind (); |
078e7b4a | 447 | |
f0a50954 | 448 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
449 | "Execute a file of Lisp code named FILE.\n\ |
450 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
451 | then try FILE unmodified.\n\ | |
452 | This function searches the directories in `load-path'.\n\ | |
453 | If optional second arg NOERROR is non-nil,\n\ | |
454 | report no error if FILE doesn't exist.\n\ | |
455 | Print messages at start and end of loading unless\n\ | |
456 | optional third arg NOMESSAGE is non-nil.\n\ | |
457 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
458 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 459 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 460 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 461 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 462 | Return t if file exists.") |
f0a50954 RS |
463 | (file, noerror, nomessage, nosuffix, must_suffix) |
464 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
465 | { |
466 | register FILE *stream; | |
467 | register int fd = -1; | |
468 | register Lisp_Object lispstream; | |
078e7b4a JB |
469 | int count = specpdl_ptr - specpdl; |
470 | Lisp_Object temp; | |
471 | struct gcpro gcpro1; | |
472 | Lisp_Object found; | |
04fc68e7 RS |
473 | /* 1 means we printed the ".el is newer" message. */ |
474 | int newer = 0; | |
475 | /* 1 means we are loading a compiled file. */ | |
476 | int compiled = 0; | |
c2225d00 | 477 | Lisp_Object handler; |
317073d5 | 478 | #ifdef DOS_NT |
23a71bd6 | 479 | char *dosmode = "rt"; |
317073d5 | 480 | #endif /* DOS_NT */ |
078e7b4a | 481 | |
0745dce9 | 482 | CHECK_STRING (file, 0); |
078e7b4a | 483 | |
c2225d00 | 484 | /* If file name is magic, call the handler. */ |
0745dce9 | 485 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 486 | if (!NILP (handler)) |
0745dce9 | 487 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 488 | |
07a0bda3 RS |
489 | /* Do this after the handler to avoid |
490 | the need to gcpro noerror, nomessage and nosuffix. | |
491 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 492 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 493 | |
078e7b4a JB |
494 | /* Avoid weird lossage with null string as arg, |
495 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 496 | if (XSTRING (file)->size > 0) |
078e7b4a | 497 | { |
211f7dcd RS |
498 | int size = XSTRING (file)->size; |
499 | ||
0745dce9 | 500 | GCPRO1 (file); |
211f7dcd RS |
501 | |
502 | if (! NILP (must_suffix)) | |
503 | { | |
504 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
505 | if (size > 3 | |
506 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
507 | must_suffix = Qnil; | |
508 | else if (size > 4 | |
509 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
510 | must_suffix = Qnil; | |
511 | /* Don't insist on adding a suffix | |
512 | if the argument includes a directory name. */ | |
513 | else if (! NILP (Ffile_name_directory (file))) | |
514 | must_suffix = Qnil; | |
515 | } | |
516 | ||
f0a50954 RS |
517 | fd = openp (Vload_path, file, |
518 | (!NILP (nosuffix) ? "" | |
519 | : ! NILP (must_suffix) ? ".elc:.el" | |
520 | : ".elc:.el:"), | |
078e7b4a | 521 | &found, 0); |
5a6e5452 | 522 | UNGCPRO; |
078e7b4a JB |
523 | } |
524 | ||
525 | if (fd < 0) | |
526 | { | |
265a9e55 | 527 | if (NILP (noerror)) |
078e7b4a JB |
528 | while (1) |
529 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 530 | Fcons (file, Qnil))); |
078e7b4a JB |
531 | else |
532 | return Qnil; | |
533 | } | |
534 | ||
74549846 RS |
535 | /* If FD is 0, that means openp found a remote file. */ |
536 | if (fd == 0) | |
537 | { | |
538 | handler = Ffind_file_name_handler (found, Qload); | |
539 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
540 | } | |
541 | ||
078e7b4a JB |
542 | if (!bcmp (&(XSTRING (found)->data[XSTRING (found)->size - 4]), |
543 | ".elc", 4)) | |
544 | { | |
545 | struct stat s1, s2; | |
546 | int result; | |
547 | ||
04fc68e7 RS |
548 | compiled = 1; |
549 | ||
317073d5 | 550 | #ifdef DOS_NT |
23a71bd6 | 551 | dosmode = "rb"; |
317073d5 | 552 | #endif /* DOS_NT */ |
4ff37b08 | 553 | stat ((char *)XSTRING (found)->data, &s1); |
078e7b4a | 554 | XSTRING (found)->data[XSTRING (found)->size - 1] = 0; |
4ff37b08 | 555 | result = stat ((char *)XSTRING (found)->data, &s2); |
078e7b4a | 556 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
51ac6f83 | 557 | { |
04fc68e7 RS |
558 | /* Make the progress messages mention that source is newer. */ |
559 | newer = 1; | |
560 | ||
561 | /* If we won't print another message, mention this anyway. */ | |
562 | if (! NILP (nomessage)) | |
e28552a4 RS |
563 | message_with_string ("Source file `%s' newer than byte-compiled file", |
564 | found, 1); | |
51ac6f83 | 565 | } |
078e7b4a JB |
566 | XSTRING (found)->data[XSTRING (found)->size - 1] = 'c'; |
567 | } | |
fe0e03f3 KH |
568 | else |
569 | { | |
570 | /* We are loading a source file (*.el). */ | |
571 | if (!NILP (Vload_source_file_function)) | |
572 | { | |
573 | close (fd); | |
7075e5a5 | 574 | return call4 (Vload_source_file_function, found, file, |
fe0e03f3 KH |
575 | NILP (noerror) ? Qnil : Qt, |
576 | NILP (nomessage) ? Qnil : Qt); | |
577 | } | |
578 | } | |
078e7b4a | 579 | |
317073d5 | 580 | #ifdef DOS_NT |
23a71bd6 RS |
581 | close (fd); |
582 | stream = fopen ((char *) XSTRING (found)->data, dosmode); | |
317073d5 | 583 | #else /* not DOS_NT */ |
078e7b4a | 584 | stream = fdopen (fd, "r"); |
317073d5 | 585 | #endif /* not DOS_NT */ |
078e7b4a JB |
586 | if (stream == 0) |
587 | { | |
588 | close (fd); | |
0745dce9 | 589 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
590 | } |
591 | ||
4b104c41 RS |
592 | if (! NILP (Vpurify_flag)) |
593 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
594 | ||
04fc68e7 RS |
595 | if (NILP (nomessage)) |
596 | { | |
db5cae4b | 597 | if (!compiled) |
e28552a4 | 598 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 599 | else if (newer) |
e28552a4 RS |
600 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
601 | file, 1); | |
db5cae4b | 602 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 603 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 604 | } |
078e7b4a | 605 | |
0745dce9 | 606 | GCPRO1 (file); |
838abf56 KH |
607 | lispstream = Fcons (Qnil, Qnil); |
608 | XSETFASTINT (XCONS (lispstream)->car, (EMACS_UINT)stream >> 16); | |
609 | XSETFASTINT (XCONS (lispstream)->cdr, (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 610 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 611 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 612 | specbind (Qload_file_name, found); |
74549846 | 613 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
614 | load_descriptor_list |
615 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 616 | load_in_progress++; |
94e554db | 617 | readevalloop (Qget_file_char, stream, file, Feval, 0, Qnil); |
078e7b4a JB |
618 | unbind_to (count, Qnil); |
619 | ||
620 | /* Run any load-hooks for this file. */ | |
0745dce9 | 621 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 622 | if (!NILP (temp)) |
078e7b4a JB |
623 | Fprogn (Fcdr (temp)); |
624 | UNGCPRO; | |
625 | ||
b2a30870 RS |
626 | if (saved_doc_string) |
627 | free (saved_doc_string); | |
628 | saved_doc_string = 0; | |
629 | saved_doc_string_size = 0; | |
630 | ||
265a9e55 | 631 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 632 | { |
db5cae4b | 633 | if (!compiled) |
e28552a4 | 634 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 635 | else if (newer) |
e28552a4 RS |
636 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
637 | file, 1); | |
db5cae4b | 638 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 639 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 640 | } |
078e7b4a JB |
641 | return Qt; |
642 | } | |
643 | ||
644 | static Lisp_Object | |
645 | load_unwind (stream) /* used as unwind-protect function in load */ | |
646 | Lisp_Object stream; | |
647 | { | |
c8bdaa8c RS |
648 | fclose ((FILE *) (XFASTINT (XCONS (stream)->car) << 16 |
649 | | XFASTINT (XCONS (stream)->cdr))); | |
078e7b4a JB |
650 | if (--load_in_progress < 0) load_in_progress = 0; |
651 | return Qnil; | |
652 | } | |
653 | ||
d2c6be7f RS |
654 | static Lisp_Object |
655 | load_descriptor_unwind (oldlist) | |
656 | Lisp_Object oldlist; | |
657 | { | |
658 | load_descriptor_list = oldlist; | |
838abf56 | 659 | return Qnil; |
d2c6be7f RS |
660 | } |
661 | ||
662 | /* Close all descriptors in use for Floads. | |
663 | This is used when starting a subprocess. */ | |
664 | ||
665 | void | |
666 | close_load_descs () | |
667 | { | |
f3849f25 | 668 | #ifndef WINDOWSNT |
d2c6be7f RS |
669 | Lisp_Object tail; |
670 | for (tail = load_descriptor_list; !NILP (tail); tail = XCONS (tail)->cdr) | |
671 | close (XFASTINT (XCONS (tail)->car)); | |
f3849f25 | 672 | #endif |
d2c6be7f | 673 | } |
078e7b4a JB |
674 | \f |
675 | static int | |
676 | complete_filename_p (pathname) | |
677 | Lisp_Object pathname; | |
678 | { | |
679 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
680 | return (IS_DIRECTORY_SEP (s[0]) |
681 | || (XSTRING (pathname)->size > 2 | |
682 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
683 | #ifdef ALTOS |
684 | || *s == '@' | |
685 | #endif | |
686 | #ifdef VMS | |
687 | || index (s, ':') | |
688 | #endif /* VMS */ | |
689 | ); | |
690 | } | |
691 | ||
692 | /* Search for a file whose name is STR, looking in directories | |
693 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
694 | SUFFIX is a string containing possible suffixes separated by colons. | |
695 | On success, returns a file descriptor. On failure, returns -1. | |
696 | ||
697 | EXEC_ONLY nonzero means don't open the files, | |
698 | just look for one that is executable. In this case, | |
699 | returns 1 on success. | |
700 | ||
701 | If STOREPTR is nonzero, it points to a slot where the name of | |
702 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
703 | nil is stored there on failure. |
704 | ||
705 | If the file we find is remote, return 0 | |
706 | but store the found remote file name in *STOREPTR. | |
707 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
708 | |
709 | int | |
710 | openp (path, str, suffix, storeptr, exec_only) | |
711 | Lisp_Object path, str; | |
712 | char *suffix; | |
713 | Lisp_Object *storeptr; | |
714 | int exec_only; | |
715 | { | |
716 | register int fd; | |
717 | int fn_size = 100; | |
718 | char buf[100]; | |
719 | register char *fn = buf; | |
720 | int absolute = 0; | |
721 | int want_size; | |
74549846 | 722 | Lisp_Object filename; |
078e7b4a | 723 | struct stat st; |
5a6e5452 | 724 | struct gcpro gcpro1; |
078e7b4a | 725 | |
5a6e5452 | 726 | GCPRO1 (str); |
078e7b4a JB |
727 | if (storeptr) |
728 | *storeptr = Qnil; | |
729 | ||
730 | if (complete_filename_p (str)) | |
731 | absolute = 1; | |
732 | ||
265a9e55 | 733 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
734 | { |
735 | char *nsuffix; | |
736 | ||
737 | filename = Fexpand_file_name (str, Fcar (path)); | |
738 | if (!complete_filename_p (filename)) | |
739 | /* If there are non-absolute elts in PATH (eg ".") */ | |
740 | /* Of course, this could conceivably lose if luser sets | |
741 | default-directory to be something non-absolute... */ | |
742 | { | |
743 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
744 | if (!complete_filename_p (filename)) | |
745 | /* Give up on this path element! */ | |
746 | continue; | |
747 | } | |
748 | ||
749 | /* Calculate maximum size of any filename made from | |
750 | this path element/specified file name and any possible suffix. */ | |
751 | want_size = strlen (suffix) + XSTRING (filename)->size + 1; | |
752 | if (fn_size < want_size) | |
753 | fn = (char *) alloca (fn_size = 100 + want_size); | |
754 | ||
755 | nsuffix = suffix; | |
756 | ||
757 | /* Loop over suffixes. */ | |
758 | while (1) | |
759 | { | |
760 | char *esuffix = (char *) index (nsuffix, ':'); | |
761 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 762 | Lisp_Object handler; |
078e7b4a | 763 | |
c49afcd7 RS |
764 | /* Concatenate path element/specified name with the suffix. |
765 | If the directory starts with /:, remove that. */ | |
766 | if (XSTRING (filename)->size > 2 | |
767 | && XSTRING (filename)->data[0] == '/' | |
768 | && XSTRING (filename)->data[1] == ':') | |
769 | { | |
770 | strncpy (fn, XSTRING (filename)->data + 2, | |
771 | XSTRING (filename)->size - 2); | |
772 | fn[XSTRING (filename)->size - 2] = 0; | |
773 | } | |
774 | else | |
775 | { | |
776 | strncpy (fn, XSTRING (filename)->data, XSTRING (filename)->size); | |
777 | fn[XSTRING (filename)->size] = 0; | |
778 | } | |
779 | ||
078e7b4a JB |
780 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
781 | strncat (fn, nsuffix, lsuffix); | |
782 | ||
74549846 RS |
783 | /* Check that the file exists and is not a directory. */ |
784 | if (absolute) | |
785 | handler = Qnil; | |
786 | else | |
787 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
788 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 789 | { |
74549846 RS |
790 | Lisp_Object string; |
791 | int exists; | |
078e7b4a | 792 | |
74549846 RS |
793 | string = build_string (fn); |
794 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
795 | : Ffile_readable_p (string)); | |
796 | if (exists | |
797 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
798 | exists = 0; | |
799 | ||
800 | if (exists) | |
078e7b4a JB |
801 | { |
802 | /* We succeeded; return this descriptor and filename. */ | |
803 | if (storeptr) | |
804 | *storeptr = build_string (fn); | |
5ef2a3c0 | 805 | UNGCPRO; |
74549846 RS |
806 | return 0; |
807 | } | |
808 | } | |
809 | else | |
810 | { | |
811 | int exists = (stat (fn, &st) >= 0 | |
812 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
813 | if (exists) | |
814 | { | |
815 | /* Check that we can access or open it. */ | |
816 | if (exec_only) | |
817 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
818 | else | |
819 | fd = open (fn, O_RDONLY, 0); | |
820 | ||
821 | if (fd >= 0) | |
822 | { | |
823 | /* We succeeded; return this descriptor and filename. */ | |
824 | if (storeptr) | |
825 | *storeptr = build_string (fn); | |
826 | UNGCPRO; | |
827 | return fd; | |
828 | } | |
078e7b4a JB |
829 | } |
830 | } | |
831 | ||
832 | /* Advance to next suffix. */ | |
833 | if (esuffix == 0) | |
834 | break; | |
835 | nsuffix += lsuffix + 1; | |
836 | } | |
5a6e5452 | 837 | if (absolute) |
5ef2a3c0 | 838 | break; |
078e7b4a JB |
839 | } |
840 | ||
5ef2a3c0 KH |
841 | UNGCPRO; |
842 | return -1; | |
078e7b4a JB |
843 | } |
844 | ||
845 | \f | |
ae321d28 RS |
846 | /* Merge the list we've accumulated of globals from the current input source |
847 | into the load_history variable. The details depend on whether | |
848 | the source has an associated file name or not. */ | |
849 | ||
850 | static void | |
851 | build_load_history (stream, source) | |
852 | FILE *stream; | |
853 | Lisp_Object source; | |
854 | { | |
855 | register Lisp_Object tail, prev, newelt; | |
856 | register Lisp_Object tem, tem2; | |
857 | register int foundit, loading; | |
858 | ||
8a1f1537 RS |
859 | /* Don't bother recording anything for preloaded files. */ |
860 | if (!NILP (Vpurify_flag)) | |
861 | return; | |
862 | ||
ae321d28 RS |
863 | loading = stream || !NARROWED; |
864 | ||
865 | tail = Vload_history; | |
866 | prev = Qnil; | |
867 | foundit = 0; | |
868 | while (!NILP (tail)) | |
869 | { | |
870 | tem = Fcar (tail); | |
871 | ||
872 | /* Find the feature's previous assoc list... */ | |
873 | if (!NILP (Fequal (source, Fcar (tem)))) | |
874 | { | |
875 | foundit = 1; | |
876 | ||
877 | /* If we're loading, remove it. */ | |
878 | if (loading) | |
879 | { | |
880 | if (NILP (prev)) | |
881 | Vload_history = Fcdr (tail); | |
882 | else | |
883 | Fsetcdr (prev, Fcdr (tail)); | |
884 | } | |
885 | ||
886 | /* Otherwise, cons on new symbols that are not already members. */ | |
887 | else | |
888 | { | |
889 | tem2 = Vcurrent_load_list; | |
890 | ||
891 | while (CONSP (tem2)) | |
892 | { | |
893 | newelt = Fcar (tem2); | |
894 | ||
895 | if (NILP (Fmemq (newelt, tem))) | |
896 | Fsetcar (tail, Fcons (Fcar (tem), | |
897 | Fcons (newelt, Fcdr (tem)))); | |
898 | ||
899 | tem2 = Fcdr (tem2); | |
900 | QUIT; | |
901 | } | |
902 | } | |
903 | } | |
904 | else | |
905 | prev = tail; | |
906 | tail = Fcdr (tail); | |
907 | QUIT; | |
908 | } | |
909 | ||
8a1f1537 RS |
910 | /* If we're loading, cons the new assoc onto the front of load-history, |
911 | the most-recently-loaded position. Also do this if we didn't find | |
912 | an existing member for the current source. */ | |
913 | if (loading || !foundit) | |
914 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
915 | Vload_history); | |
ae321d28 RS |
916 | } |
917 | ||
078e7b4a JB |
918 | Lisp_Object |
919 | unreadpure () /* Used as unwind-protect function in readevalloop */ | |
920 | { | |
921 | read_pure = 0; | |
922 | return Qnil; | |
923 | } | |
924 | ||
94e554db RS |
925 | static Lisp_Object |
926 | readevalloop_1 (old) | |
927 | Lisp_Object old; | |
928 | { | |
929 | load_convert_to_unibyte = ! NILP (old); | |
930 | return Qnil; | |
931 | } | |
932 | ||
933 | /* UNIBYTE specifies how to set load_convert_to_unibyte | |
934 | for this invocation. */ | |
935 | ||
078e7b4a | 936 | static void |
94e554db | 937 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag, unibyte) |
078e7b4a | 938 | Lisp_Object readcharfun; |
ae321d28 RS |
939 | FILE *stream; |
940 | Lisp_Object sourcename; | |
078e7b4a JB |
941 | Lisp_Object (*evalfun) (); |
942 | int printflag; | |
6c478f93 | 943 | Lisp_Object unibyte; |
078e7b4a JB |
944 | { |
945 | register int c; | |
946 | register Lisp_Object val; | |
947 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 948 | struct gcpro gcpro1; |
49cf7ff4 RS |
949 | struct buffer *b = 0; |
950 | ||
951 | if (BUFFERP (readcharfun)) | |
952 | b = XBUFFER (readcharfun); | |
953 | else if (MARKERP (readcharfun)) | |
954 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
955 | |
956 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 957 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
958 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
959 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 960 | |
6f7f43d5 RS |
961 | readchar_backlog = 0; |
962 | ||
8a1f1537 | 963 | GCPRO1 (sourcename); |
ae321d28 | 964 | |
ae321d28 RS |
965 | LOADHIST_ATTACH (sourcename); |
966 | ||
078e7b4a JB |
967 | while (1) |
968 | { | |
49cf7ff4 RS |
969 | if (b != 0 && NILP (b->name)) |
970 | error ("Reading from killed buffer"); | |
971 | ||
078e7b4a JB |
972 | instream = stream; |
973 | c = READCHAR; | |
974 | if (c == ';') | |
975 | { | |
976 | while ((c = READCHAR) != '\n' && c != -1); | |
977 | continue; | |
978 | } | |
979 | if (c < 0) break; | |
6069d957 RS |
980 | |
981 | /* Ignore whitespace here, so we can detect eof. */ | |
982 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
983 | continue; | |
078e7b4a | 984 | |
265a9e55 | 985 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 986 | { |
0e326373 | 987 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
988 | record_unwind_protect (unreadpure, Qnil); |
989 | val = read_list (-1, readcharfun); | |
0e326373 | 990 | unbind_to (count1, Qnil); |
078e7b4a JB |
991 | } |
992 | else | |
993 | { | |
994 | UNREAD (c); | |
4ad679f9 | 995 | read_objects = Qnil; |
84a15045 RS |
996 | if (NILP (Vload_read_function)) |
997 | val = read0 (readcharfun); | |
998 | else | |
999 | val = call1 (Vload_read_function, readcharfun); | |
078e7b4a JB |
1000 | } |
1001 | ||
1002 | val = (*evalfun) (val); | |
1003 | if (printflag) | |
1004 | { | |
1005 | Vvalues = Fcons (val, Vvalues); | |
1006 | if (EQ (Vstandard_output, Qt)) | |
1007 | Fprin1 (val, Qnil); | |
1008 | else | |
1009 | Fprint (val, Qnil); | |
1010 | } | |
1011 | } | |
1012 | ||
ae321d28 | 1013 | build_load_history (stream, sourcename); |
ae321d28 RS |
1014 | UNGCPRO; |
1015 | ||
078e7b4a JB |
1016 | unbind_to (count, Qnil); |
1017 | } | |
1018 | ||
1019 | #ifndef standalone | |
1020 | ||
94e554db | 1021 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 4, "", |
94b304d7 RS |
1022 | "Execute the current buffer as Lisp code.\n\ |
1023 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
1024 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
1025 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
1026 | nil means discard it; anything else is stream for print.\n\ |
1027 | \n\ | |
13febd85 RS |
1028 | If the optional third argument FILENAME is non-nil,\n\ |
1029 | it specifies the file name to use for `load-history'.\n\ | |
1030 | \n\ | |
d331bcad | 1031 | This function preserves the position of point.") |
94e554db RS |
1032 | (buffer, printflag, filename, unibyte) |
1033 | Lisp_Object buffer, printflag, filename, unibyte; | |
228d4b1c JA |
1034 | { |
1035 | int count = specpdl_ptr - specpdl; | |
1036 | Lisp_Object tem, buf; | |
1037 | ||
9391b698 | 1038 | if (NILP (buffer)) |
228d4b1c JA |
1039 | buf = Fcurrent_buffer (); |
1040 | else | |
9391b698 | 1041 | buf = Fget_buffer (buffer); |
dfdb645c | 1042 | if (NILP (buf)) |
13febd85 | 1043 | error ("No such buffer"); |
228d4b1c | 1044 | |
dfdb645c | 1045 | if (NILP (printflag)) |
228d4b1c JA |
1046 | tem = Qsymbolp; |
1047 | else | |
1048 | tem = printflag; | |
13febd85 RS |
1049 | |
1050 | if (NILP (filename)) | |
1051 | filename = XBUFFER (buf)->filename; | |
1052 | ||
228d4b1c JA |
1053 | specbind (Qstandard_output, tem); |
1054 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1055 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
94e554db | 1056 | readevalloop (buf, 0, filename, Feval, !NILP (printflag), unibyte); |
cb09ab7a | 1057 | unbind_to (count, Qnil); |
228d4b1c JA |
1058 | |
1059 | return Qnil; | |
1060 | } | |
1061 | ||
1062 | #if 0 | |
c23edb78 | 1063 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1064 | "Execute the current buffer as Lisp code.\n\ |
1065 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1066 | nil means discard it; anything else is stream for print.\n\ | |
1067 | \n\ | |
1068 | If there is no error, point does not move. If there is an error,\n\ | |
1069 | point remains at the end of the last character read from the buffer.") | |
1070 | (printflag) | |
1071 | Lisp_Object printflag; | |
1072 | { | |
1073 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1074 | Lisp_Object tem, cbuf; |
1075 | ||
1076 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1077 | |
265a9e55 | 1078 | if (NILP (printflag)) |
078e7b4a JB |
1079 | tem = Qsymbolp; |
1080 | else | |
1081 | tem = printflag; | |
1082 | specbind (Qstandard_output, tem); | |
1083 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1084 | SET_PT (BEGV); | |
94e554db RS |
1085 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
1086 | !NILP (printflag), Qnil); | |
078e7b4a JB |
1087 | return unbind_to (count, Qnil); |
1088 | } | |
228d4b1c | 1089 | #endif |
078e7b4a JB |
1090 | |
1091 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 3, "r", | |
1092 | "Execute the region as Lisp code.\n\ | |
1093 | When called from programs, expects two arguments,\n\ | |
1094 | giving starting and ending indices in the current buffer\n\ | |
1095 | of the text to be executed.\n\ | |
1096 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1097 | nil means discard it; anything else is stream for printing it.\n\ | |
1098 | \n\ | |
83f0c0c7 | 1099 | This function does not move point.") |
9391b698 EN |
1100 | (start, end, printflag) |
1101 | Lisp_Object start, end, printflag; | |
078e7b4a JB |
1102 | { |
1103 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1104 | Lisp_Object tem, cbuf; |
1105 | ||
1106 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1107 | |
265a9e55 | 1108 | if (NILP (printflag)) |
078e7b4a JB |
1109 | tem = Qsymbolp; |
1110 | else | |
1111 | tem = printflag; | |
1112 | specbind (Qstandard_output, tem); | |
1113 | ||
265a9e55 | 1114 | if (NILP (printflag)) |
078e7b4a JB |
1115 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1116 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1117 | ||
9391b698 EN |
1118 | /* This both uses start and checks its type. */ |
1119 | Fgoto_char (start); | |
1120 | Fnarrow_to_region (make_number (BEGV), end); | |
94e554db RS |
1121 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
1122 | !NILP (printflag), Qnil); | |
078e7b4a JB |
1123 | |
1124 | return unbind_to (count, Qnil); | |
1125 | } | |
1126 | ||
1127 | #endif /* standalone */ | |
1128 | \f | |
1129 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1130 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1131 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1132 | STREAM or the value of `standard-input' may be:\n\ | |
1133 | a buffer (read from point and advance it)\n\ | |
1134 | a marker (read from where it points and advance it)\n\ | |
1135 | a function (call it with no arguments for each character,\n\ | |
1136 | call it with a char as argument to push a char back)\n\ | |
1137 | a string (takes text from string, starting at the beginning)\n\ | |
1138 | t (read text line using minibuffer and use it).") | |
5be02dff KH |
1139 | (stream) |
1140 | Lisp_Object stream; | |
078e7b4a JB |
1141 | { |
1142 | extern Lisp_Object Fread_minibuffer (); | |
1143 | ||
5be02dff KH |
1144 | if (NILP (stream)) |
1145 | stream = Vstandard_input; | |
1146 | if (EQ (stream, Qt)) | |
1147 | stream = Qread_char; | |
078e7b4a | 1148 | |
6f7f43d5 | 1149 | readchar_backlog = 0; |
17634846 | 1150 | new_backquote_flag = 0; |
4ad679f9 | 1151 | read_objects = Qnil; |
17634846 | 1152 | |
078e7b4a | 1153 | #ifndef standalone |
5be02dff | 1154 | if (EQ (stream, Qread_char)) |
078e7b4a JB |
1155 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
1156 | #endif | |
1157 | ||
5be02dff KH |
1158 | if (STRINGP (stream)) |
1159 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1160 | |
5be02dff | 1161 | return read0 (stream); |
078e7b4a JB |
1162 | } |
1163 | ||
1164 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1165 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1166 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1167 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1168 | they default to 0 and (length STRING) respectively.") | |
1169 | (string, start, end) | |
1170 | Lisp_Object string, start, end; | |
1171 | { | |
1172 | int startval, endval; | |
1173 | Lisp_Object tem; | |
1174 | ||
1175 | CHECK_STRING (string,0); | |
1176 | ||
265a9e55 | 1177 | if (NILP (end)) |
bed23cb2 | 1178 | endval = XSTRING (string)->size; |
078e7b4a | 1179 | else |
e28552a4 RS |
1180 | { |
1181 | CHECK_NUMBER (end, 2); | |
8028e0ed | 1182 | endval = XINT (end); |
bed23cb2 | 1183 | if (endval < 0 || endval > XSTRING (string)->size) |
078e7b4a JB |
1184 | args_out_of_range (string, end); |
1185 | } | |
1186 | ||
265a9e55 | 1187 | if (NILP (start)) |
078e7b4a JB |
1188 | startval = 0; |
1189 | else | |
e28552a4 RS |
1190 | { |
1191 | CHECK_NUMBER (start, 1); | |
8028e0ed | 1192 | startval = XINT (start); |
078e7b4a JB |
1193 | if (startval < 0 || startval > endval) |
1194 | args_out_of_range (string, start); | |
1195 | } | |
1196 | ||
1197 | read_from_string_index = startval; | |
bed23cb2 | 1198 | read_from_string_index_byte = string_char_to_byte (string, startval); |
078e7b4a JB |
1199 | read_from_string_limit = endval; |
1200 | ||
17634846 | 1201 | new_backquote_flag = 0; |
4ad679f9 | 1202 | read_objects = Qnil; |
17634846 | 1203 | |
078e7b4a | 1204 | tem = read0 (string); |
bed23cb2 | 1205 | return Fcons (tem, make_number (read_from_string_index)); |
078e7b4a JB |
1206 | } |
1207 | \f | |
6428369f KH |
1208 | /* Use this for recursive reads, in contexts where internal tokens |
1209 | are not allowed. */ | |
e28552a4 | 1210 | |
078e7b4a JB |
1211 | static Lisp_Object |
1212 | read0 (readcharfun) | |
1213 | Lisp_Object readcharfun; | |
1214 | { | |
1215 | register Lisp_Object val; | |
e28552a4 | 1216 | int c; |
078e7b4a | 1217 | |
17634846 | 1218 | val = read1 (readcharfun, &c, 0); |
6428369f | 1219 | if (c) |
93d75e4c RS |
1220 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1221 | make_number (c)), | |
e28552a4 | 1222 | Qnil)); |
078e7b4a JB |
1223 | |
1224 | return val; | |
1225 | } | |
1226 | \f | |
1227 | static int read_buffer_size; | |
1228 | static char *read_buffer; | |
1229 | ||
fe0e03f3 KH |
1230 | /* Read multibyte form and return it as a character. C is a first |
1231 | byte of multibyte form, and rest of them are read from | |
1232 | READCHARFUN. */ | |
6f7f43d5 | 1233 | |
fe0e03f3 KH |
1234 | static int |
1235 | read_multibyte (c, readcharfun) | |
1236 | register int c; | |
1237 | Lisp_Object readcharfun; | |
1238 | { | |
1239 | /* We need the actual character code of this multibyte | |
1240 | characters. */ | |
1241 | unsigned char str[MAX_LENGTH_OF_MULTI_BYTE_FORM]; | |
1242 | int len = 0; | |
1243 | ||
1244 | str[len++] = c; | |
1245 | while ((c = READCHAR) >= 0xA0 | |
1246 | && len < MAX_LENGTH_OF_MULTI_BYTE_FORM) | |
1247 | str[len++] = c; | |
1248 | UNREAD (c); | |
1249 | return STRING_CHAR (str, len); | |
1250 | } | |
1251 | ||
6f7f43d5 RS |
1252 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1253 | ||
078e7b4a | 1254 | static int |
e7fc914b | 1255 | read_escape (readcharfun, stringp) |
078e7b4a | 1256 | Lisp_Object readcharfun; |
e7fc914b | 1257 | int stringp; |
078e7b4a JB |
1258 | { |
1259 | register int c = READCHAR; | |
1260 | switch (c) | |
1261 | { | |
f3849f25 RS |
1262 | case -1: |
1263 | error ("End of file"); | |
1264 | ||
078e7b4a | 1265 | case 'a': |
265a9e55 | 1266 | return '\007'; |
078e7b4a JB |
1267 | case 'b': |
1268 | return '\b'; | |
f405a585 RS |
1269 | case 'd': |
1270 | return 0177; | |
078e7b4a JB |
1271 | case 'e': |
1272 | return 033; | |
1273 | case 'f': | |
1274 | return '\f'; | |
1275 | case 'n': | |
1276 | return '\n'; | |
1277 | case 'r': | |
1278 | return '\r'; | |
1279 | case 't': | |
1280 | return '\t'; | |
1281 | case 'v': | |
1282 | return '\v'; | |
1283 | case '\n': | |
1284 | return -1; | |
e28552a4 | 1285 | case ' ': |
e7fc914b KH |
1286 | if (stringp) |
1287 | return -1; | |
1288 | return ' '; | |
078e7b4a JB |
1289 | |
1290 | case 'M': | |
1291 | c = READCHAR; | |
1292 | if (c != '-') | |
1293 | error ("Invalid escape character syntax"); | |
1294 | c = READCHAR; | |
1295 | if (c == '\\') | |
e7fc914b | 1296 | c = read_escape (readcharfun, 0); |
7bd279cd | 1297 | return c | meta_modifier; |
f405a585 RS |
1298 | |
1299 | case 'S': | |
1300 | c = READCHAR; | |
1301 | if (c != '-') | |
1302 | error ("Invalid escape character syntax"); | |
1303 | c = READCHAR; | |
1304 | if (c == '\\') | |
e7fc914b | 1305 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1306 | return c | shift_modifier; |
1307 | ||
1308 | case 'H': | |
1309 | c = READCHAR; | |
1310 | if (c != '-') | |
1311 | error ("Invalid escape character syntax"); | |
1312 | c = READCHAR; | |
1313 | if (c == '\\') | |
e7fc914b | 1314 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1315 | return c | hyper_modifier; |
1316 | ||
1317 | case 'A': | |
1318 | c = READCHAR; | |
1319 | if (c != '-') | |
1320 | error ("Invalid escape character syntax"); | |
1321 | c = READCHAR; | |
1322 | if (c == '\\') | |
e7fc914b | 1323 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1324 | return c | alt_modifier; |
1325 | ||
1326 | case 's': | |
1327 | c = READCHAR; | |
1328 | if (c != '-') | |
1329 | error ("Invalid escape character syntax"); | |
1330 | c = READCHAR; | |
1331 | if (c == '\\') | |
e7fc914b | 1332 | c = read_escape (readcharfun, 0); |
7bd279cd | 1333 | return c | super_modifier; |
078e7b4a JB |
1334 | |
1335 | case 'C': | |
1336 | c = READCHAR; | |
1337 | if (c != '-') | |
1338 | error ("Invalid escape character syntax"); | |
1339 | case '^': | |
1340 | c = READCHAR; | |
1341 | if (c == '\\') | |
e7fc914b | 1342 | c = read_escape (readcharfun, 0); |
f405a585 RS |
1343 | if ((c & 0177) == '?') |
1344 | return 0177 | c; | |
1345 | /* ASCII control chars are made from letters (both cases), | |
1346 | as well as the non-letters within 0100...0137. */ | |
1347 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1348 | return (c & (037 | ~0177)); | |
1349 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1350 | return (c & (037 | ~0177)); | |
078e7b4a | 1351 | else |
7bd279cd | 1352 | return c | ctrl_modifier; |
078e7b4a JB |
1353 | |
1354 | case '0': | |
1355 | case '1': | |
1356 | case '2': | |
1357 | case '3': | |
1358 | case '4': | |
1359 | case '5': | |
1360 | case '6': | |
1361 | case '7': | |
1362 | /* An octal escape, as in ANSI C. */ | |
1363 | { | |
1364 | register int i = c - '0'; | |
1365 | register int count = 0; | |
1366 | while (++count < 3) | |
1367 | { | |
1368 | if ((c = READCHAR) >= '0' && c <= '7') | |
1369 | { | |
1370 | i *= 8; | |
1371 | i += c - '0'; | |
1372 | } | |
1373 | else | |
1374 | { | |
1375 | UNREAD (c); | |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | return i; | |
1380 | } | |
1381 | ||
1382 | case 'x': | |
1383 | /* A hex escape, as in ANSI C. */ | |
1384 | { | |
1385 | int i = 0; | |
1386 | while (1) | |
1387 | { | |
1388 | c = READCHAR; | |
1389 | if (c >= '0' && c <= '9') | |
1390 | { | |
1391 | i *= 16; | |
1392 | i += c - '0'; | |
1393 | } | |
1394 | else if ((c >= 'a' && c <= 'f') | |
1395 | || (c >= 'A' && c <= 'F')) | |
1396 | { | |
1397 | i *= 16; | |
1398 | if (c >= 'a' && c <= 'f') | |
1399 | i += c - 'a' + 10; | |
1400 | else | |
1401 | i += c - 'A' + 10; | |
1402 | } | |
1403 | else | |
1404 | { | |
1405 | UNREAD (c); | |
1406 | break; | |
1407 | } | |
1408 | } | |
1409 | return i; | |
1410 | } | |
1411 | ||
1412 | default: | |
fe0e03f3 KH |
1413 | if (BASE_LEADING_CODE_P (c)) |
1414 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1415 | return c; |
1416 | } | |
1417 | } | |
1418 | ||
6428369f KH |
1419 | /* If the next token is ')' or ']' or '.', we store that character |
1420 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1421 | zero in *PCH and we read and return one lisp object. |
1422 | ||
1423 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1424 | ||
078e7b4a | 1425 | static Lisp_Object |
17634846 | 1426 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1427 | register Lisp_Object readcharfun; |
e28552a4 | 1428 | int *pch; |
17634846 | 1429 | int first_in_list; |
078e7b4a JB |
1430 | { |
1431 | register int c; | |
4ad679f9 EN |
1432 | int uninterned_symbol = 0; |
1433 | ||
6428369f | 1434 | *pch = 0; |
078e7b4a JB |
1435 | |
1436 | retry: | |
1437 | ||
1438 | c = READCHAR; | |
1439 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1440 | ||
1441 | switch (c) | |
1442 | { | |
1443 | case '(': | |
1444 | return read_list (0, readcharfun); | |
1445 | ||
1446 | case '[': | |
1447 | return read_vector (readcharfun); | |
1448 | ||
1449 | case ')': | |
1450 | case ']': | |
078e7b4a | 1451 | { |
6428369f KH |
1452 | *pch = c; |
1453 | return Qnil; | |
078e7b4a JB |
1454 | } |
1455 | ||
1456 | case '#': | |
200f684e | 1457 | c = READCHAR; |
c2390933 RS |
1458 | if (c == '^') |
1459 | { | |
1460 | c = READCHAR; | |
1461 | if (c == '[') | |
1462 | { | |
1463 | Lisp_Object tmp; | |
1464 | tmp = read_vector (readcharfun); | |
1465 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS | |
1466 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1467 | error ("Invalid size char-table"); | |
1468 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1469 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1470 | return tmp; |
1471 | } | |
3701b5de KH |
1472 | else if (c == '^') |
1473 | { | |
1474 | c = READCHAR; | |
1475 | if (c == '[') | |
1476 | { | |
1477 | Lisp_Object tmp; | |
1478 | tmp = read_vector (readcharfun); | |
1479 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) | |
1480 | error ("Invalid size char-table"); | |
1481 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1482 | XCHAR_TABLE (tmp)->top = Qnil; | |
1483 | return tmp; | |
1484 | } | |
1485 | Fsignal (Qinvalid_read_syntax, | |
1486 | Fcons (make_string ("#^^", 3), Qnil)); | |
1487 | } | |
c2390933 RS |
1488 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1489 | } | |
1490 | if (c == '&') | |
1491 | { | |
1492 | Lisp_Object length; | |
1493 | length = read1 (readcharfun, pch, first_in_list); | |
1494 | c = READCHAR; | |
1495 | if (c == '"') | |
1496 | { | |
1497 | Lisp_Object tmp, val; | |
90ed3ec5 | 1498 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1499 | / BITS_PER_CHAR); |
c2390933 RS |
1500 | |
1501 | UNREAD (c); | |
1502 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1503 | if (size_in_chars != XSTRING (tmp)->size |
1504 | /* We used to print 1 char too many | |
1505 | when the number of bits was a multiple of 8. | |
1506 | Accept such input in case it came from an old version. */ | |
1507 | && ! (XFASTINT (length) | |
1508 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1509 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1510 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1511 | |
1512 | val = Fmake_bool_vector (length, Qnil); | |
1513 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1514 | size_in_chars); | |
1515 | return val; | |
1516 | } | |
ec3bbd7d | 1517 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1518 | Qnil)); |
c2390933 | 1519 | } |
200f684e RS |
1520 | if (c == '[') |
1521 | { | |
1522 | /* Accept compiled functions at read-time so that we don't have to | |
1523 | build them using function calls. */ | |
748ef62f RS |
1524 | Lisp_Object tmp; |
1525 | tmp = read_vector (readcharfun); | |
1526 | return Fmake_byte_code (XVECTOR (tmp)->size, | |
1527 | XVECTOR (tmp)->contents); | |
200f684e | 1528 | } |
748ef62f RS |
1529 | #ifdef USE_TEXT_PROPERTIES |
1530 | if (c == '(') | |
1531 | { | |
1532 | Lisp_Object tmp; | |
1533 | struct gcpro gcpro1; | |
e28552a4 | 1534 | int ch; |
748ef62f RS |
1535 | |
1536 | /* Read the string itself. */ | |
17634846 | 1537 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1538 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1539 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1540 | GCPRO1 (tmp); | |
1541 | /* Read the intervals and their properties. */ | |
1542 | while (1) | |
1543 | { | |
1544 | Lisp_Object beg, end, plist; | |
1545 | ||
17634846 | 1546 | beg = read1 (readcharfun, &ch, 0); |
6428369f KH |
1547 | if (ch == ')') |
1548 | break; | |
1549 | if (ch == 0) | |
17634846 | 1550 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1551 | if (ch == 0) |
17634846 | 1552 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1553 | if (ch) |
748ef62f | 1554 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1555 | Fcons (build_string ("invalid string property list"), |
1556 | Qnil)); | |
748ef62f RS |
1557 | Fset_text_properties (beg, end, plist, tmp); |
1558 | } | |
1559 | UNGCPRO; | |
1560 | return tmp; | |
1561 | } | |
1562 | #endif | |
20ea2964 RS |
1563 | /* #@NUMBER is used to skip NUMBER following characters. |
1564 | That's used in .elc files to skip over doc strings | |
1565 | and function definitions. */ | |
1566 | if (c == '@') | |
1567 | { | |
1568 | int i, nskip = 0; | |
1569 | ||
1570 | /* Read a decimal integer. */ | |
1571 | while ((c = READCHAR) >= 0 | |
1572 | && c >= '0' && c <= '9') | |
1573 | { | |
1574 | nskip *= 10; | |
1575 | nskip += c - '0'; | |
1576 | } | |
1577 | if (c >= 0) | |
1578 | UNREAD (c); | |
1579 | ||
b2a30870 RS |
1580 | #ifndef DOS_NT /* I don't know if filepos works right on MSDOS and Windoze. */ |
1581 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) | |
1582 | { | |
1583 | /* If we are supposed to force doc strings into core right now, | |
1584 | record the last string that we skipped, | |
1585 | and record where in the file it comes from. */ | |
1586 | if (saved_doc_string_size == 0) | |
1587 | { | |
1588 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1589 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1590 | } |
1591 | if (nskip > saved_doc_string_size) | |
1592 | { | |
1593 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1594 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1595 | saved_doc_string_size); | |
b2a30870 RS |
1596 | } |
1597 | ||
1598 | saved_doc_string_position = ftell (instream); | |
1599 | ||
1600 | /* Copy that many characters into saved_doc_string. */ | |
1601 | for (i = 0; i < nskip && c >= 0; i++) | |
1602 | saved_doc_string[i] = c = READCHAR; | |
1603 | ||
1604 | saved_doc_string_length = i; | |
1605 | } | |
1606 | else | |
1607 | #endif /* not DOS_NT */ | |
1608 | { | |
1609 | /* Skip that many characters. */ | |
1610 | for (i = 0; i < nskip && c >= 0; i++) | |
1611 | c = READCHAR; | |
1612 | } | |
d49f0c1a | 1613 | |
20ea2964 RS |
1614 | goto retry; |
1615 | } | |
1616 | if (c == '$') | |
1617 | return Vload_file_name; | |
2b6cae0c RS |
1618 | if (c == '\'') |
1619 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1620 | /* #:foo is the uninterned symbol named foo. */ |
1621 | if (c == ':') | |
1622 | { | |
1623 | uninterned_symbol = 1; | |
1624 | c = READCHAR; | |
1625 | goto default_label; | |
1626 | } | |
1627 | /* Reader forms that can reuse previously read objects. */ | |
1628 | if (c >= '0' && c <= '9') | |
1629 | { | |
1630 | int n = 0; | |
1631 | Lisp_Object tem; | |
2b6cae0c | 1632 | |
4ad679f9 EN |
1633 | /* Read a non-negative integer. */ |
1634 | while (c >= '0' && c <= '9') | |
1635 | { | |
1636 | n *= 10; | |
1637 | n += c - '0'; | |
1638 | c = READCHAR; | |
1639 | } | |
1640 | /* #n=object returns object, but associates it with n for #n#. */ | |
1641 | if (c == '=') | |
1642 | { | |
1643 | tem = read0 (readcharfun); | |
1644 | read_objects = Fcons (Fcons (make_number (n), tem), read_objects); | |
1645 | return tem; | |
1646 | } | |
1647 | /* #n# returns a previously read object. */ | |
1648 | if (c == '#') | |
1649 | { | |
1650 | tem = Fassq (make_number (n), read_objects); | |
1651 | if (CONSP (tem)) | |
1652 | return XCDR (tem); | |
1653 | /* Fall through to error message. */ | |
1654 | } | |
1655 | /* Fall through to error message. */ | |
1656 | } | |
20ea2964 | 1657 | |
200f684e | 1658 | UNREAD (c); |
748ef62f | 1659 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
1660 | |
1661 | case ';': | |
1662 | while ((c = READCHAR) >= 0 && c != '\n'); | |
1663 | goto retry; | |
1664 | ||
1665 | case '\'': | |
1666 | { | |
1667 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
1668 | } | |
1669 | ||
17634846 RS |
1670 | case '`': |
1671 | if (first_in_list) | |
1672 | goto default_label; | |
1673 | else | |
1674 | { | |
1675 | Lisp_Object value; | |
1676 | ||
1677 | new_backquote_flag = 1; | |
1678 | value = read0 (readcharfun); | |
1679 | new_backquote_flag = 0; | |
1680 | ||
1681 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
1682 | } | |
1683 | ||
1684 | case ',': | |
1685 | if (new_backquote_flag) | |
1686 | { | |
1687 | Lisp_Object comma_type = Qnil; | |
1688 | Lisp_Object value; | |
1689 | int ch = READCHAR; | |
1690 | ||
1691 | if (ch == '@') | |
1692 | comma_type = Qcomma_at; | |
1693 | else if (ch == '.') | |
1694 | comma_type = Qcomma_dot; | |
1695 | else | |
1696 | { | |
1697 | if (ch >= 0) UNREAD (ch); | |
1698 | comma_type = Qcomma; | |
1699 | } | |
1700 | ||
1701 | new_backquote_flag = 0; | |
1702 | value = read0 (readcharfun); | |
1703 | new_backquote_flag = 1; | |
1704 | return Fcons (comma_type, Fcons (value, Qnil)); | |
1705 | } | |
1706 | else | |
1707 | goto default_label; | |
1708 | ||
078e7b4a JB |
1709 | case '?': |
1710 | { | |
1711 | register Lisp_Object val; | |
1712 | ||
1713 | c = READCHAR; | |
1714 | if (c < 0) return Fsignal (Qend_of_file, Qnil); | |
1715 | ||
1716 | if (c == '\\') | |
e7fc914b | 1717 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
1718 | else if (BASE_LEADING_CODE_P (c)) |
1719 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 1720 | |
6f7f43d5 | 1721 | return make_number (c); |
078e7b4a JB |
1722 | } |
1723 | ||
1724 | case '\"': | |
1725 | { | |
1726 | register char *p = read_buffer; | |
1727 | register char *end = read_buffer + read_buffer_size; | |
1728 | register int c; | |
e7fc914b KH |
1729 | /* Nonzero if we saw an escape sequence specifying |
1730 | a multibyte character. */ | |
1731 | int force_multibyte = 0; | |
1732 | /* Nonzero if we saw an escape sequence specifying | |
1733 | a single-byte character. */ | |
1734 | int force_singlebyte = 0; | |
078e7b4a | 1735 | int cancel = 0; |
e7fc914b | 1736 | int nchars; |
078e7b4a JB |
1737 | |
1738 | while ((c = READCHAR) >= 0 | |
1739 | && c != '\"') | |
1740 | { | |
bed23cb2 | 1741 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
1742 | { |
1743 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1744 | p += new - read_buffer; | |
1745 | read_buffer += new - read_buffer; | |
1746 | end = read_buffer + read_buffer_size; | |
1747 | } | |
bed23cb2 | 1748 | |
078e7b4a | 1749 | if (c == '\\') |
03e88613 | 1750 | { |
e7fc914b | 1751 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
1752 | |
1753 | /* C is -1 if \ newline has just been seen */ | |
1754 | if (c == -1) | |
03e88613 | 1755 | { |
bed23cb2 RS |
1756 | if (p == read_buffer) |
1757 | cancel = 1; | |
03e88613 RS |
1758 | continue; |
1759 | } | |
bed23cb2 | 1760 | |
94e554db RS |
1761 | /* If an escape specifies a non-ASCII single-byte character, |
1762 | this must be a unibyte string. */ | |
bed23cb2 RS |
1763 | if (SINGLE_BYTE_CHAR_P ((c & ~CHAR_META)) |
1764 | && ! ASCII_BYTE_P (c)) | |
e7fc914b | 1765 | force_singlebyte = 1; |
03e88613 | 1766 | } |
6f7f43d5 | 1767 | |
bed23cb2 | 1768 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_META))) |
078e7b4a | 1769 | { |
bed23cb2 RS |
1770 | unsigned char workbuf[4]; |
1771 | unsigned char *str = workbuf; | |
1772 | int length; | |
1773 | ||
1774 | length = non_ascii_char_to_string (c, workbuf, &str); | |
1775 | if (length > 1) | |
1776 | force_multibyte = 1; | |
1777 | ||
1778 | bcopy (str, p, length); | |
1779 | p += length; | |
078e7b4a JB |
1780 | } |
1781 | else | |
f943104a | 1782 | { |
988c2f83 RS |
1783 | /* Allow `\C- ' and `\C-?'. */ |
1784 | if (c == (CHAR_CTL | ' ')) | |
1785 | c = 0; | |
1786 | else if (c == (CHAR_CTL | '?')) | |
1787 | c = 127; | |
1788 | ||
f943104a KH |
1789 | if (c & CHAR_META) |
1790 | /* Move the meta bit to the right place for a string. */ | |
1791 | c = (c & ~CHAR_META) | 0x80; | |
1792 | if (c & ~0xff) | |
1793 | error ("Invalid modifier in string"); | |
1794 | *p++ = c; | |
1795 | } | |
078e7b4a | 1796 | } |
6f7f43d5 RS |
1797 | if (c < 0) |
1798 | return Fsignal (Qend_of_file, Qnil); | |
078e7b4a JB |
1799 | |
1800 | /* If purifying, and string starts with \ newline, | |
1801 | return zero instead. This is for doc strings | |
08564963 | 1802 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 1803 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
1804 | return make_number (0); |
1805 | ||
6f46329a | 1806 | if (force_multibyte) |
1d10ac5b | 1807 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); |
6f46329a RS |
1808 | else if (force_singlebyte) |
1809 | nchars = p - read_buffer; | |
94e554db RS |
1810 | else if (load_convert_to_unibyte) |
1811 | { | |
1812 | Lisp_Object string; | |
1813 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); | |
1814 | if (p - read_buffer != nchars) | |
1815 | { | |
1816 | string = make_multibyte_string (read_buffer, nchars, | |
1817 | p - read_buffer); | |
1818 | return Fstring_make_unibyte (string); | |
1819 | } | |
1820 | } | |
bed23cb2 RS |
1821 | else if (EQ (readcharfun, Qget_file_char)) |
1822 | /* Nowadays, reading directly from a file | |
1823 | is used only for compiled Emacs Lisp files, | |
1824 | and those always use the Emacs internal encoding. */ | |
1825 | nchars = multibyte_chars_in_text (read_buffer, p - read_buffer); | |
e28552a4 | 1826 | else |
bed23cb2 RS |
1827 | /* In all other cases, if we read these bytes as |
1828 | separate characters, treat them as separate characters now. */ | |
e7fc914b KH |
1829 | nchars = p - read_buffer; |
1830 | ||
1831 | if (read_pure) | |
491f16a2 RS |
1832 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1833 | (force_multibyte | |
1834 | || (p - read_buffer != nchars))); | |
1835 | return make_specified_string (read_buffer, nchars, p - read_buffer, | |
1836 | (force_multibyte | |
1837 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
1838 | } |
1839 | ||
109d300c JB |
1840 | case '.': |
1841 | { | |
1842 | #ifdef LISP_FLOAT_TYPE | |
1843 | /* If a period is followed by a number, then we should read it | |
1844 | as a floating point number. Otherwise, it denotes a dotted | |
1845 | pair. */ | |
1846 | int next_char = READCHAR; | |
1847 | UNREAD (next_char); | |
1848 | ||
075027b1 | 1849 | if (! (next_char >= '0' && next_char <= '9')) |
109d300c JB |
1850 | #endif |
1851 | { | |
6428369f KH |
1852 | *pch = c; |
1853 | return Qnil; | |
109d300c JB |
1854 | } |
1855 | ||
1856 | /* Otherwise, we fall through! Note that the atom-reading loop | |
1857 | below will now loop at least once, assuring that we will not | |
1858 | try to UNREAD two characters in a row. */ | |
1859 | } | |
078e7b4a | 1860 | default: |
17634846 | 1861 | default_label: |
078e7b4a JB |
1862 | if (c <= 040) goto retry; |
1863 | { | |
1864 | register char *p = read_buffer; | |
481c6336 | 1865 | int quoted = 0; |
078e7b4a JB |
1866 | |
1867 | { | |
1868 | register char *end = read_buffer + read_buffer_size; | |
1869 | ||
6f7f43d5 RS |
1870 | while (c > 040 |
1871 | && !(c == '\"' || c == '\'' || c == ';' || c == '?' | |
1872 | || c == '(' || c == ')' | |
109d300c | 1873 | #ifndef LISP_FLOAT_TYPE |
6f7f43d5 RS |
1874 | /* If we have floating-point support, then we need |
1875 | to allow <digits><dot><digits>. */ | |
1876 | || c =='.' | |
078e7b4a | 1877 | #endif /* not LISP_FLOAT_TYPE */ |
6f7f43d5 RS |
1878 | || c == '[' || c == ']' || c == '#' |
1879 | )) | |
078e7b4a | 1880 | { |
bed23cb2 | 1881 | if (end - p < MAX_LENGTH_OF_MULTI_BYTE_FORM) |
078e7b4a JB |
1882 | { |
1883 | register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1884 | p += new - read_buffer; | |
1885 | read_buffer += new - read_buffer; | |
1886 | end = read_buffer + read_buffer_size; | |
1887 | } | |
1888 | if (c == '\\') | |
481c6336 RS |
1889 | { |
1890 | c = READCHAR; | |
1891 | quoted = 1; | |
1892 | } | |
6f7f43d5 | 1893 | |
bed23cb2 RS |
1894 | if (! SINGLE_BYTE_CHAR_P (c)) |
1895 | { | |
1896 | unsigned char workbuf[4]; | |
1897 | unsigned char *str = workbuf; | |
1898 | int length; | |
1899 | ||
1900 | length = non_ascii_char_to_string (c, workbuf, &str); | |
1901 | ||
1902 | bcopy (str, p, length); | |
1903 | p += length; | |
1904 | } | |
1905 | else | |
1906 | *p++ = c; | |
6f7f43d5 | 1907 | |
078e7b4a JB |
1908 | c = READCHAR; |
1909 | } | |
1910 | ||
1911 | if (p == end) | |
1912 | { | |
1913 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
1914 | p += new - read_buffer; | |
1915 | read_buffer += new - read_buffer; | |
1916 | /* end = read_buffer + read_buffer_size; */ | |
1917 | } | |
1918 | *p = 0; | |
1919 | if (c >= 0) | |
1920 | UNREAD (c); | |
1921 | } | |
1922 | ||
4ad679f9 | 1923 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
1924 | { |
1925 | register char *p1; | |
1926 | register Lisp_Object val; | |
1927 | p1 = read_buffer; | |
1928 | if (*p1 == '+' || *p1 == '-') p1++; | |
1929 | /* Is it an integer? */ | |
1930 | if (p1 != p) | |
1931 | { | |
1932 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
dbc4e1c1 | 1933 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
1934 | /* Integers can have trailing decimal points. */ |
1935 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
dbc4e1c1 | 1936 | #endif |
481c6336 RS |
1937 | if (p1 == p) |
1938 | /* It is an integer. */ | |
1939 | { | |
dbc4e1c1 | 1940 | #ifdef LISP_FLOAT_TYPE |
481c6336 RS |
1941 | if (p1[-1] == '.') |
1942 | p1[-1] = '\0'; | |
dbc4e1c1 | 1943 | #endif |
faca07fb RS |
1944 | if (sizeof (int) == sizeof (EMACS_INT)) |
1945 | XSETINT (val, atoi (read_buffer)); | |
1946 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
1947 | XSETINT (val, atol (read_buffer)); | |
1948 | else | |
1949 | abort (); | |
481c6336 RS |
1950 | return val; |
1951 | } | |
1952 | } | |
078e7b4a | 1953 | #ifdef LISP_FLOAT_TYPE |
481c6336 | 1954 | if (isfloat_string (read_buffer)) |
eb659c41 | 1955 | { |
3c329963 | 1956 | double zero = 0.0; |
eb659c41 RS |
1957 | double value = atof (read_buffer); |
1958 | if (read_buffer[0] == '-' && value == 0.0) | |
1959 | value *= -1.0; | |
1960 | /* The only way this can be true, after isfloat_string | |
1961 | returns 1, is if the input ends in e+INF or e+NaN. */ | |
1962 | if (p[-1] == 'F' || p[-1] == 'N') | |
1963 | { | |
1964 | if (p[-1] == 'N') | |
3c329963 | 1965 | value = zero / zero; |
eb659c41 | 1966 | else if (read_buffer[0] == '-') |
3c329963 | 1967 | value = - 1.0 / zero; |
eb659c41 | 1968 | else |
3c329963 | 1969 | value = 1.0 / zero; |
eb659c41 RS |
1970 | } |
1971 | return make_float (value); | |
1972 | } | |
078e7b4a | 1973 | #endif |
481c6336 | 1974 | } |
078e7b4a | 1975 | |
4ad679f9 EN |
1976 | if (uninterned_symbol) |
1977 | return make_symbol (read_buffer); | |
1978 | else | |
1979 | return intern (read_buffer); | |
078e7b4a JB |
1980 | } |
1981 | } | |
1982 | } | |
1983 | \f | |
1984 | #ifdef LISP_FLOAT_TYPE | |
1985 | ||
078e7b4a JB |
1986 | #define LEAD_INT 1 |
1987 | #define DOT_CHAR 2 | |
1988 | #define TRAIL_INT 4 | |
1989 | #define E_CHAR 8 | |
1990 | #define EXP_INT 16 | |
1991 | ||
1992 | int | |
1993 | isfloat_string (cp) | |
1994 | register char *cp; | |
1995 | { | |
c1a2f60a | 1996 | register int state; |
078e7b4a JB |
1997 | |
1998 | state = 0; | |
1999 | if (*cp == '+' || *cp == '-') | |
2000 | cp++; | |
2001 | ||
075027b1 | 2002 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2003 | { |
2004 | state |= LEAD_INT; | |
075027b1 RS |
2005 | while (*cp >= '0' && *cp <= '9') |
2006 | cp++; | |
078e7b4a JB |
2007 | } |
2008 | if (*cp == '.') | |
2009 | { | |
2010 | state |= DOT_CHAR; | |
2011 | cp++; | |
2012 | } | |
075027b1 | 2013 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2014 | { |
2015 | state |= TRAIL_INT; | |
075027b1 | 2016 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2017 | cp++; |
2018 | } | |
a35f88bf | 2019 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2020 | { |
2021 | state |= E_CHAR; | |
2022 | cp++; | |
e73997a1 RS |
2023 | if (*cp == '+' || *cp == '-') |
2024 | cp++; | |
078e7b4a | 2025 | } |
078e7b4a | 2026 | |
075027b1 | 2027 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2028 | { |
2029 | state |= EXP_INT; | |
075027b1 | 2030 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2031 | cp++; |
2032 | } | |
eb659c41 RS |
2033 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2034 | { | |
2035 | state |= EXP_INT; | |
2036 | cp += 3; | |
2037 | } | |
2038 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2039 | { | |
2040 | state |= EXP_INT; | |
2041 | cp += 3; | |
2042 | } | |
2043 | ||
37579d7c | 2044 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2045 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2046 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2047 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2048 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2049 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a JB |
2050 | } |
2051 | #endif /* LISP_FLOAT_TYPE */ | |
2052 | \f | |
2053 | static Lisp_Object | |
2054 | read_vector (readcharfun) | |
2055 | Lisp_Object readcharfun; | |
2056 | { | |
2057 | register int i; | |
2058 | register int size; | |
2059 | register Lisp_Object *ptr; | |
2060 | register Lisp_Object tem, vector; | |
2061 | register struct Lisp_Cons *otem; | |
2062 | Lisp_Object len; | |
2063 | ||
2064 | tem = read_list (1, readcharfun); | |
2065 | len = Flength (tem); | |
2066 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2067 | ||
2068 | ||
2069 | size = XVECTOR (vector)->size; | |
2070 | ptr = XVECTOR (vector)->contents; | |
2071 | for (i = 0; i < size; i++) | |
2072 | { | |
2073 | ptr[i] = read_pure ? Fpurecopy (Fcar (tem)) : Fcar (tem); | |
2074 | otem = XCONS (tem); | |
2075 | tem = Fcdr (tem); | |
2076 | free_cons (otem); | |
2077 | } | |
2078 | return vector; | |
2079 | } | |
2080 | ||
6f7f43d5 RS |
2081 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2082 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2083 | and make structure pure. */ |
2084 | ||
2085 | static Lisp_Object | |
2086 | read_list (flag, readcharfun) | |
2087 | int flag; | |
2088 | register Lisp_Object readcharfun; | |
2089 | { | |
2090 | /* -1 means check next element for defun, | |
2091 | 0 means don't check, | |
2092 | 1 means already checked and found defun. */ | |
2093 | int defunflag = flag < 0 ? -1 : 0; | |
2094 | Lisp_Object val, tail; | |
2095 | register Lisp_Object elt, tem; | |
2096 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2097 | /* 0 is the normal case. |
b2a30870 RS |
2098 | 1 means this list is a doc reference; replace it with the number 0. |
2099 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 2100 | int doc_reference = 0; |
078e7b4a | 2101 | |
17634846 RS |
2102 | /* Initialize this to 1 if we are reading a list. */ |
2103 | int first_in_list = flag <= 0; | |
2104 | ||
078e7b4a JB |
2105 | val = Qnil; |
2106 | tail = Qnil; | |
2107 | ||
2108 | while (1) | |
2109 | { | |
e28552a4 | 2110 | int ch; |
078e7b4a | 2111 | GCPRO2 (val, tail); |
17634846 | 2112 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2113 | UNGCPRO; |
20ea2964 | 2114 | |
17634846 RS |
2115 | first_in_list = 0; |
2116 | ||
821d417e | 2117 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2118 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2119 | && ! NILP (elt) |
821d417e RS |
2120 | && !NILP (Vpurify_flag)) |
2121 | { | |
2122 | if (NILP (Vdoc_file_name)) | |
2123 | /* We have not yet called Snarf-documentation, so assume | |
2124 | this file is described in the DOC-MM.NN file | |
2125 | and Snarf-documentation will fill in the right value later. | |
2126 | For now, replace the whole list with 0. */ | |
2127 | doc_reference = 1; | |
2128 | else | |
2129 | /* We have already called Snarf-documentation, so make a relative | |
2130 | file name for this file, so it can be found properly | |
2131 | in the installed Lisp directory. | |
2132 | We don't use Fexpand_file_name because that would make | |
2133 | the directory absolute now. */ | |
2134 | elt = concat2 (build_string ("../lisp/"), | |
2135 | Ffile_name_nondirectory (elt)); | |
2136 | } | |
b2a30870 | 2137 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2138 | && ! NILP (elt) |
b2a30870 RS |
2139 | && load_force_doc_strings) |
2140 | doc_reference = 2; | |
20ea2964 | 2141 | |
6428369f | 2142 | if (ch) |
078e7b4a JB |
2143 | { |
2144 | if (flag > 0) | |
2145 | { | |
6428369f | 2146 | if (ch == ']') |
078e7b4a | 2147 | return val; |
821d417e RS |
2148 | Fsignal (Qinvalid_read_syntax, |
2149 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2150 | } |
6428369f | 2151 | if (ch == ')') |
078e7b4a | 2152 | return val; |
6428369f | 2153 | if (ch == '.') |
078e7b4a JB |
2154 | { |
2155 | GCPRO2 (val, tail); | |
265a9e55 | 2156 | if (!NILP (tail)) |
078e7b4a JB |
2157 | XCONS (tail)->cdr = read0 (readcharfun); |
2158 | else | |
2159 | val = read0 (readcharfun); | |
17634846 | 2160 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2161 | UNGCPRO; |
6428369f | 2162 | if (ch == ')') |
821d417e RS |
2163 | { |
2164 | if (doc_reference == 1) | |
2165 | return make_number (0); | |
b2a30870 RS |
2166 | if (doc_reference == 2) |
2167 | { | |
2168 | /* Get a doc string from the file we are loading. | |
2169 | If it's in saved_doc_string, get it from there. */ | |
2170 | int pos = XINT (XCONS (val)->cdr); | |
2171 | if (pos >= saved_doc_string_position | |
2172 | && pos < (saved_doc_string_position | |
2173 | + saved_doc_string_length)) | |
2174 | { | |
2175 | int start = pos - saved_doc_string_position; | |
2176 | int from, to; | |
2177 | ||
2178 | /* Process quoting with ^A, | |
2179 | and find the end of the string, | |
2180 | which is marked with ^_ (037). */ | |
2181 | for (from = start, to = start; | |
2182 | saved_doc_string[from] != 037;) | |
2183 | { | |
2184 | int c = saved_doc_string[from++]; | |
2185 | if (c == 1) | |
2186 | { | |
2187 | c = saved_doc_string[from++]; | |
2188 | if (c == 1) | |
2189 | saved_doc_string[to++] = c; | |
2190 | else if (c == '0') | |
2191 | saved_doc_string[to++] = 0; | |
2192 | else if (c == '_') | |
2193 | saved_doc_string[to++] = 037; | |
2194 | } | |
2195 | else | |
2196 | saved_doc_string[to++] = c; | |
2197 | } | |
2198 | ||
2199 | return make_string (saved_doc_string + start, | |
2200 | to - start); | |
2201 | } | |
2202 | else | |
2203 | return read_doc_string (val); | |
2204 | } | |
2205 | ||
821d417e RS |
2206 | return val; |
2207 | } | |
078e7b4a JB |
2208 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2209 | } | |
2210 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2211 | } | |
2212 | tem = (read_pure && flag <= 0 | |
2213 | ? pure_cons (elt, Qnil) | |
2214 | : Fcons (elt, Qnil)); | |
265a9e55 | 2215 | if (!NILP (tail)) |
078e7b4a JB |
2216 | XCONS (tail)->cdr = tem; |
2217 | else | |
2218 | val = tem; | |
2219 | tail = tem; | |
2220 | if (defunflag < 0) | |
2221 | defunflag = EQ (elt, Qdefun); | |
2222 | else if (defunflag > 0) | |
2223 | read_pure = 1; | |
2224 | } | |
2225 | } | |
2226 | \f | |
2227 | Lisp_Object Vobarray; | |
2228 | Lisp_Object initial_obarray; | |
2229 | ||
d007f5c8 RS |
2230 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2231 | ||
2232 | int oblookup_last_bucket_number; | |
2233 | ||
2234 | static int hash_string (); | |
2235 | Lisp_Object oblookup (); | |
2236 | ||
2237 | /* Get an error if OBARRAY is not an obarray. | |
2238 | If it is one, return it. */ | |
2239 | ||
078e7b4a JB |
2240 | Lisp_Object |
2241 | check_obarray (obarray) | |
2242 | Lisp_Object obarray; | |
2243 | { | |
cfff016d | 2244 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2245 | { |
2246 | /* If Vobarray is now invalid, force it to be valid. */ | |
2247 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2248 | ||
2249 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2250 | } | |
2251 | return obarray; | |
2252 | } | |
2253 | ||
d007f5c8 RS |
2254 | /* Intern the C string STR: return a symbol with that name, |
2255 | interned in the current obarray. */ | |
078e7b4a JB |
2256 | |
2257 | Lisp_Object | |
2258 | intern (str) | |
2259 | char *str; | |
2260 | { | |
2261 | Lisp_Object tem; | |
2262 | int len = strlen (str); | |
153a17b7 | 2263 | Lisp_Object obarray; |
078e7b4a | 2264 | |
153a17b7 | 2265 | obarray = Vobarray; |
cfff016d | 2266 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2267 | obarray = check_obarray (obarray); |
e28552a4 | 2268 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2269 | if (SYMBOLP (tem)) |
078e7b4a | 2270 | return tem; |
87631ef7 | 2271 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2272 | } |
4ad679f9 EN |
2273 | |
2274 | /* Create an uninterned symbol with name STR. */ | |
2275 | ||
2276 | Lisp_Object | |
2277 | make_symbol (str) | |
2278 | char *str; | |
2279 | { | |
2280 | int len = strlen (str); | |
2281 | ||
2282 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 2283 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
2284 | : make_string (str, len))); |
2285 | } | |
d007f5c8 | 2286 | \f |
078e7b4a JB |
2287 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2288 | "Return the canonical symbol whose name is STRING.\n\ | |
2289 | If there is none, one is created by this function and returned.\n\ | |
2290 | A second optional argument specifies the obarray to use;\n\ | |
2291 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2292 | (string, obarray) |
2293 | Lisp_Object string, obarray; | |
078e7b4a JB |
2294 | { |
2295 | register Lisp_Object tem, sym, *ptr; | |
2296 | ||
265a9e55 | 2297 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2298 | obarray = check_obarray (obarray); |
2299 | ||
9391b698 | 2300 | CHECK_STRING (string, 0); |
078e7b4a | 2301 | |
e28552a4 RS |
2302 | tem = oblookup (obarray, XSTRING (string)->data, |
2303 | XSTRING (string)->size, | |
fc932ac6 | 2304 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2305 | if (!INTEGERP (tem)) |
078e7b4a JB |
2306 | return tem; |
2307 | ||
265a9e55 | 2308 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2309 | string = Fpurecopy (string); |
2310 | sym = Fmake_symbol (string); | |
4ad679f9 | 2311 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2312 | |
bdd47b1c RS |
2313 | if ((XSTRING (string)->data[0] == ':') |
2314 | && obarray == initial_obarray) | |
a0549832 RS |
2315 | XSYMBOL (sym)->value = sym; |
2316 | ||
078e7b4a | 2317 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2318 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2319 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2320 | else | |
2321 | XSYMBOL (sym)->next = 0; | |
2322 | *ptr = sym; | |
2323 | return sym; | |
2324 | } | |
2325 | ||
2326 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
2327 | "Return the canonical symbol whose name is STRING, or nil if none exists.\n\ | |
2328 | A second optional argument specifies the obarray to use;\n\ | |
2329 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2330 | (string, obarray) |
2331 | Lisp_Object string, obarray; | |
078e7b4a JB |
2332 | { |
2333 | register Lisp_Object tem; | |
2334 | ||
265a9e55 | 2335 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2336 | obarray = check_obarray (obarray); |
2337 | ||
9391b698 | 2338 | CHECK_STRING (string, 0); |
078e7b4a | 2339 | |
e28552a4 RS |
2340 | tem = oblookup (obarray, XSTRING (string)->data, |
2341 | XSTRING (string)->size, | |
fc932ac6 | 2342 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2343 | if (!INTEGERP (tem)) |
078e7b4a JB |
2344 | return tem; |
2345 | return Qnil; | |
2346 | } | |
d007f5c8 RS |
2347 | \f |
2348 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2349 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2350 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2351 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2352 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2353 | OBARRAY defaults to the value of the variable `obarray'.") | |
2354 | (name, obarray) | |
2355 | Lisp_Object name, obarray; | |
2356 | { | |
2357 | register Lisp_Object string, tem; | |
2358 | int hash; | |
2359 | ||
2360 | if (NILP (obarray)) obarray = Vobarray; | |
2361 | obarray = check_obarray (obarray); | |
2362 | ||
2363 | if (SYMBOLP (name)) | |
2364 | XSETSTRING (string, XSYMBOL (name)->name); | |
2365 | else | |
2366 | { | |
2367 | CHECK_STRING (name, 0); | |
2368 | string = name; | |
2369 | } | |
2370 | ||
e28552a4 RS |
2371 | tem = oblookup (obarray, XSTRING (string)->data, |
2372 | XSTRING (string)->size, | |
fc932ac6 | 2373 | STRING_BYTES (XSTRING (string))); |
d007f5c8 RS |
2374 | if (INTEGERP (tem)) |
2375 | return Qnil; | |
2376 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2377 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2378 | return Qnil; | |
2379 | ||
ca69c42f RS |
2380 | XSYMBOL (tem)->obarray = Qnil; |
2381 | ||
d007f5c8 RS |
2382 | hash = oblookup_last_bucket_number; |
2383 | ||
2384 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2385 | { |
2386 | if (XSYMBOL (tem)->next) | |
2387 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2388 | else | |
2389 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2390 | } | |
d007f5c8 RS |
2391 | else |
2392 | { | |
2393 | Lisp_Object tail, following; | |
2394 | ||
2395 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2396 | XSYMBOL (tail)->next; | |
2397 | tail = following) | |
2398 | { | |
2399 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2400 | if (EQ (following, tem)) | |
2401 | { | |
2402 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2403 | break; | |
2404 | } | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | return Qt; | |
2409 | } | |
2410 | \f | |
2411 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
2412 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
2413 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
2414 | |
2415 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
2416 | |
2417 | Lisp_Object | |
e28552a4 | 2418 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
2419 | Lisp_Object obarray; |
2420 | register char *ptr; | |
e28552a4 | 2421 | int size, size_byte; |
078e7b4a | 2422 | { |
7a70b397 RS |
2423 | int hash; |
2424 | int obsize; | |
078e7b4a JB |
2425 | register Lisp_Object tail; |
2426 | Lisp_Object bucket, tem; | |
2427 | ||
cfff016d | 2428 | if (!VECTORP (obarray) |
7c79a684 | 2429 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
2430 | { |
2431 | obarray = check_obarray (obarray); | |
2432 | obsize = XVECTOR (obarray)->size; | |
2433 | } | |
519418b3 RS |
2434 | /* This is sometimes needed in the middle of GC. */ |
2435 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 2436 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 2437 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
2438 | hash %= obsize; |
2439 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 2440 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
2441 | if (XFASTINT (bucket) == 0) |
2442 | ; | |
cfff016d | 2443 | else if (!SYMBOLP (bucket)) |
078e7b4a | 2444 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
2445 | else |
2446 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 2447 | { |
fc932ac6 | 2448 | if (STRING_BYTES (XSYMBOL (tail)->name) == size_byte |
e28552a4 RS |
2449 | && XSYMBOL (tail)->name->size == size |
2450 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
2451 | return tail; |
2452 | else if (XSYMBOL (tail)->next == 0) | |
2453 | break; | |
2454 | } | |
1805de4f | 2455 | XSETINT (tem, hash); |
078e7b4a JB |
2456 | return tem; |
2457 | } | |
2458 | ||
2459 | static int | |
2460 | hash_string (ptr, len) | |
2461 | unsigned char *ptr; | |
2462 | int len; | |
2463 | { | |
2464 | register unsigned char *p = ptr; | |
2465 | register unsigned char *end = p + len; | |
2466 | register unsigned char c; | |
2467 | register int hash = 0; | |
2468 | ||
2469 | while (p != end) | |
2470 | { | |
2471 | c = *p++; | |
2472 | if (c >= 0140) c -= 40; | |
2473 | hash = ((hash<<3) + (hash>>28) + c); | |
2474 | } | |
2475 | return hash & 07777777777; | |
2476 | } | |
d007f5c8 | 2477 | \f |
078e7b4a JB |
2478 | void |
2479 | map_obarray (obarray, fn, arg) | |
2480 | Lisp_Object obarray; | |
d5b28a9d | 2481 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
2482 | Lisp_Object arg; |
2483 | { | |
2484 | register int i; | |
2485 | register Lisp_Object tail; | |
2486 | CHECK_VECTOR (obarray, 1); | |
2487 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
2488 | { | |
2489 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 2490 | if (SYMBOLP (tail)) |
078e7b4a JB |
2491 | while (1) |
2492 | { | |
2493 | (*fn) (tail, arg); | |
2494 | if (XSYMBOL (tail)->next == 0) | |
2495 | break; | |
1805de4f | 2496 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
2497 | } |
2498 | } | |
2499 | } | |
2500 | ||
d5b28a9d | 2501 | void |
078e7b4a JB |
2502 | mapatoms_1 (sym, function) |
2503 | Lisp_Object sym, function; | |
2504 | { | |
2505 | call1 (function, sym); | |
2506 | } | |
2507 | ||
2508 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
2509 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
2510 | OBARRAY defaults to the value of `obarray'.") | |
2511 | (function, obarray) | |
2512 | Lisp_Object function, obarray; | |
2513 | { | |
2514 | Lisp_Object tem; | |
2515 | ||
265a9e55 | 2516 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2517 | obarray = check_obarray (obarray); |
2518 | ||
2519 | map_obarray (obarray, mapatoms_1, function); | |
2520 | return Qnil; | |
2521 | } | |
2522 | ||
5e88a39e | 2523 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
2524 | |
2525 | void | |
2526 | init_obarray () | |
2527 | { | |
2528 | Lisp_Object oblength; | |
2529 | int hash; | |
2530 | Lisp_Object *tem; | |
2531 | ||
baf69866 | 2532 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 2533 | |
491f16a2 | 2534 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
2535 | Vobarray = Fmake_vector (oblength, make_number (0)); |
2536 | initial_obarray = Vobarray; | |
2537 | staticpro (&initial_obarray); | |
2538 | /* Intern nil in the obarray */ | |
4ad679f9 | 2539 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
2540 | /* These locals are to kludge around a pyramid compiler bug. */ |
2541 | hash = hash_string ("nil", 3); | |
2542 | /* Separate statement here to avoid VAXC bug. */ | |
2543 | hash %= OBARRAY_SIZE; | |
2544 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
2545 | *tem = Qnil; | |
2546 | ||
491f16a2 | 2547 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
2548 | XSYMBOL (Qnil)->function = Qunbound; |
2549 | XSYMBOL (Qunbound)->value = Qunbound; | |
2550 | XSYMBOL (Qunbound)->function = Qunbound; | |
2551 | ||
2552 | Qt = intern ("t"); | |
2553 | XSYMBOL (Qnil)->value = Qnil; | |
2554 | XSYMBOL (Qnil)->plist = Qnil; | |
2555 | XSYMBOL (Qt)->value = Qt; | |
2556 | ||
2557 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
2558 | Vpurify_flag = Qt; | |
2559 | ||
2560 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 2561 | staticpro (&Qvariable_documentation); |
078e7b4a | 2562 | |
bed23cb2 | 2563 | read_buffer_size = 100 + MAX_LENGTH_OF_MULTI_BYTE_FORM; |
078e7b4a JB |
2564 | read_buffer = (char *) malloc (read_buffer_size); |
2565 | } | |
2566 | \f | |
2567 | void | |
2568 | defsubr (sname) | |
2569 | struct Lisp_Subr *sname; | |
2570 | { | |
2571 | Lisp_Object sym; | |
2572 | sym = intern (sname->symbol_name); | |
1805de4f | 2573 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
2574 | } |
2575 | ||
2576 | #ifdef NOTDEF /* use fset in subr.el now */ | |
2577 | void | |
2578 | defalias (sname, string) | |
2579 | struct Lisp_Subr *sname; | |
2580 | char *string; | |
2581 | { | |
2582 | Lisp_Object sym; | |
2583 | sym = intern (string); | |
1805de4f | 2584 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
2585 | } |
2586 | #endif /* NOTDEF */ | |
2587 | ||
078e7b4a | 2588 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 2589 | to a C variable of type int. Sample call: */ |
950c215d | 2590 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 2591 | void |
e9e00ff2 | 2592 | defvar_int (namestring, address) |
078e7b4a JB |
2593 | char *namestring; |
2594 | int *address; | |
078e7b4a | 2595 | { |
1a0f90f7 | 2596 | Lisp_Object sym, val; |
078e7b4a | 2597 | sym = intern (namestring); |
1a0f90f7 | 2598 | val = allocate_misc (); |
47e28b2c | 2599 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 2600 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 2601 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2602 | } |
2603 | ||
2604 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 2605 | NIL if address contains 0 */ |
078e7b4a | 2606 | void |
e9e00ff2 | 2607 | defvar_bool (namestring, address) |
078e7b4a JB |
2608 | char *namestring; |
2609 | int *address; | |
078e7b4a | 2610 | { |
1a0f90f7 | 2611 | Lisp_Object sym, val; |
078e7b4a | 2612 | sym = intern (namestring); |
1a0f90f7 | 2613 | val = allocate_misc (); |
47e28b2c | 2614 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 2615 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 2616 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2617 | } |
2618 | ||
1a0f90f7 KH |
2619 | /* Similar but define a variable whose value is the Lisp Object stored |
2620 | at address. Two versions: with and without gc-marking of the C | |
2621 | variable. The nopro version is used when that variable will be | |
2622 | gc-marked for some other reason, since marking the same slot twice | |
2623 | can cause trouble with strings. */ | |
078e7b4a | 2624 | void |
1a0f90f7 | 2625 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
2626 | char *namestring; |
2627 | Lisp_Object *address; | |
078e7b4a | 2628 | { |
1a0f90f7 | 2629 | Lisp_Object sym, val; |
078e7b4a | 2630 | sym = intern (namestring); |
1a0f90f7 | 2631 | val = allocate_misc (); |
47e28b2c | 2632 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 2633 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 2634 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
2635 | } |
2636 | ||
078e7b4a | 2637 | void |
1a0f90f7 | 2638 | defvar_lisp (namestring, address) |
078e7b4a JB |
2639 | char *namestring; |
2640 | Lisp_Object *address; | |
078e7b4a | 2641 | { |
1a0f90f7 KH |
2642 | defvar_lisp_nopro (namestring, address); |
2643 | staticpro (address); | |
078e7b4a JB |
2644 | } |
2645 | ||
2646 | #ifndef standalone | |
2647 | ||
2648 | /* Similar but define a variable whose value is the Lisp Object stored in | |
2836d9a4 KH |
2649 | the current buffer. address is the address of the slot in the buffer |
2650 | that is current now. */ | |
078e7b4a JB |
2651 | |
2652 | void | |
4360b0c6 | 2653 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
2654 | char *namestring; |
2655 | Lisp_Object *address; | |
4360b0c6 | 2656 | Lisp_Object type; |
078e7b4a JB |
2657 | char *doc; |
2658 | { | |
1a0f90f7 | 2659 | Lisp_Object sym, val; |
078e7b4a JB |
2660 | int offset; |
2661 | extern struct buffer buffer_local_symbols; | |
2662 | ||
2663 | sym = intern (namestring); | |
1a0f90f7 | 2664 | val = allocate_misc (); |
078e7b4a JB |
2665 | offset = (char *)address - (char *)current_buffer; |
2666 | ||
47e28b2c | 2667 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 2668 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 2669 | XSYMBOL (sym)->value = val; |
078e7b4a | 2670 | *(Lisp_Object *)(offset + (char *)&buffer_local_symbols) = sym; |
4360b0c6 | 2671 | *(Lisp_Object *)(offset + (char *)&buffer_local_types) = type; |
2836d9a4 | 2672 | if (XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)) == 0) |
078e7b4a JB |
2673 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
2674 | slot of buffer_local_flags */ | |
2675 | abort (); | |
2676 | } | |
2677 | ||
2678 | #endif /* standalone */ | |
950c215d KH |
2679 | |
2680 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 2681 | at a particular offset in the current kboard object. */ |
950c215d KH |
2682 | |
2683 | void | |
4ac38690 | 2684 | defvar_kboard (namestring, offset) |
950c215d KH |
2685 | char *namestring; |
2686 | int offset; | |
2687 | { | |
2688 | Lisp_Object sym, val; | |
2689 | sym = intern (namestring); | |
2690 | val = allocate_misc (); | |
47e28b2c | 2691 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 2692 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
2693 | XSYMBOL (sym)->value = val; |
2694 | } | |
078e7b4a | 2695 | \f |
11938f10 KH |
2696 | /* Record the value of load-path used at the start of dumping |
2697 | so we can see if the site changed it later during dumping. */ | |
2698 | static Lisp_Object dump_path; | |
2699 | ||
d5b28a9d | 2700 | void |
279499f0 | 2701 | init_lread () |
078e7b4a | 2702 | { |
46947372 | 2703 | char *normal; |
e73997a1 | 2704 | int turn_off_warning = 0; |
078e7b4a | 2705 | |
9dff7c53 RS |
2706 | #ifdef HAVE_SETLOCALE |
2707 | /* Make sure numbers are parsed as we expect. */ | |
2708 | setlocale (LC_NUMERIC, "C"); | |
2709 | #endif /* HAVE_SETLOCALE */ | |
2710 | ||
279499f0 | 2711 | /* Compute the default load-path. */ |
46947372 JB |
2712 | #ifdef CANNOT_DUMP |
2713 | normal = PATH_LOADSEARCH; | |
e065a56e | 2714 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
2715 | #else |
2716 | if (NILP (Vpurify_flag)) | |
2717 | normal = PATH_LOADSEARCH; | |
279499f0 | 2718 | else |
46947372 | 2719 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 2720 | |
46947372 JB |
2721 | /* In a dumped Emacs, we normally have to reset the value of |
2722 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
2723 | uses ../lisp, instead of the path of the installed elisp | |
2724 | libraries. However, if it appears that Vload_path was changed | |
2725 | from the default before dumping, don't override that value. */ | |
4746118a JB |
2726 | if (initialized) |
2727 | { | |
4746118a | 2728 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
2729 | { |
2730 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 2731 | if (!NILP (Vinstallation_directory)) |
80667d53 | 2732 | { |
74180aa4 | 2733 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
2734 | installation dir, if it exists. */ |
2735 | Lisp_Object tem, tem1; | |
74180aa4 RS |
2736 | tem = Fexpand_file_name (build_string ("lisp"), |
2737 | Vinstallation_directory); | |
3a3056e5 RS |
2738 | tem1 = Ffile_exists_p (tem); |
2739 | if (!NILP (tem1)) | |
2740 | { | |
2741 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
2742 | { |
2743 | turn_off_warning = 1; | |
2744 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2745 | } | |
3a3056e5 RS |
2746 | } |
2747 | else | |
2748 | /* That dir doesn't exist, so add the build-time | |
2749 | Lisp dirs instead. */ | |
2750 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 2751 | |
9fbc0116 RS |
2752 | /* Add leim under the installation dir, if it exists. */ |
2753 | tem = Fexpand_file_name (build_string ("leim"), | |
2754 | Vinstallation_directory); | |
2755 | tem1 = Ffile_exists_p (tem); | |
2756 | if (!NILP (tem1)) | |
2757 | { | |
2758 | if (NILP (Fmember (tem, Vload_path))) | |
2759 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2760 | } | |
2761 | ||
c478f98c RS |
2762 | /* Add site-list under the installation dir, if it exists. */ |
2763 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
2764 | Vinstallation_directory); | |
2765 | tem1 = Ffile_exists_p (tem); | |
2766 | if (!NILP (tem1)) | |
2767 | { | |
2768 | if (NILP (Fmember (tem, Vload_path))) | |
2769 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2770 | } | |
0f337465 RS |
2771 | |
2772 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
2773 | and it is run from where it was built, add to load-path |
2774 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
2775 | |
2776 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
2777 | { | |
33046fc9 RS |
2778 | Lisp_Object tem2; |
2779 | ||
0f337465 RS |
2780 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
2781 | Vinstallation_directory); | |
2782 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
2783 | |
2784 | /* Don't be fooled if they moved the entire source tree | |
2785 | AFTER dumping Emacs. If the build directory is indeed | |
2786 | different from the source dir, src/Makefile.in and | |
2787 | src/Makefile will not be found together. */ | |
2788 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
2789 | Vinstallation_directory); | |
2790 | tem2 = Ffile_exists_p (tem); | |
2791 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
2792 | { |
2793 | tem = Fexpand_file_name (build_string ("lisp"), | |
2794 | Vsource_directory); | |
2795 | ||
2796 | if (NILP (Fmember (tem, Vload_path))) | |
2797 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2798 | ||
9fbc0116 RS |
2799 | tem = Fexpand_file_name (build_string ("leim"), |
2800 | Vsource_directory); | |
2801 | ||
2802 | if (NILP (Fmember (tem, Vload_path))) | |
2803 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2804 | ||
0f337465 RS |
2805 | tem = Fexpand_file_name (build_string ("site-lisp"), |
2806 | Vsource_directory); | |
2807 | ||
2808 | if (NILP (Fmember (tem, Vload_path))) | |
2809 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
2810 | } | |
2811 | } | |
80667d53 RS |
2812 | } |
2813 | } | |
4746118a JB |
2814 | } |
2815 | else | |
11938f10 | 2816 | { |
7b396c6c RS |
2817 | /* NORMAL refers to the lisp dir in the source directory. */ |
2818 | /* We used to add ../lisp at the front here, but | |
2819 | that caused trouble because it was copied from dump_path | |
2820 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
2821 | It should be unnecessary. */ | |
2822 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
2823 | dump_path = Vload_path; |
2824 | } | |
46947372 | 2825 | #endif |
279499f0 | 2826 | |
317073d5 RS |
2827 | #ifndef WINDOWSNT |
2828 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
2829 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 2830 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
2831 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
2832 | ||
078e7b4a | 2833 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
2834 | if (!turn_off_warning) |
2835 | { | |
2836 | Lisp_Object path_tail; | |
078e7b4a | 2837 | |
e73997a1 RS |
2838 | for (path_tail = Vload_path; |
2839 | !NILP (path_tail); | |
2840 | path_tail = XCONS (path_tail)->cdr) | |
2841 | { | |
2842 | Lisp_Object dirfile; | |
2843 | dirfile = Fcar (path_tail); | |
2844 | if (STRINGP (dirfile)) | |
2845 | { | |
2846 | dirfile = Fdirectory_file_name (dirfile); | |
2847 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c RS |
2848 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
2849 | XCONS (path_tail)->car); | |
e73997a1 RS |
2850 | } |
2851 | } | |
2852 | } | |
317073d5 | 2853 | #endif /* WINDOWSNT */ |
46947372 JB |
2854 | |
2855 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
2856 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 2857 | #ifndef CANNOT_DUMP |
46947372 JB |
2858 | if (NILP (Vpurify_flag) |
2859 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 2860 | #endif |
279499f0 | 2861 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
2862 | |
2863 | Vvalues = Qnil; | |
2864 | ||
078e7b4a | 2865 | load_in_progress = 0; |
4e53f562 | 2866 | Vload_file_name = Qnil; |
d2c6be7f RS |
2867 | |
2868 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
2869 | |
2870 | Vstandard_input = Qt; | |
078e7b4a JB |
2871 | } |
2872 | ||
85496b8c RS |
2873 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
2874 | does not exist. Print it on stderr and put it in *Message*. */ | |
2875 | ||
d5b28a9d | 2876 | void |
85496b8c RS |
2877 | dir_warning (format, dirname) |
2878 | char *format; | |
2879 | Lisp_Object dirname; | |
2880 | { | |
2881 | char *buffer | |
2882 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
2883 | ||
2884 | fprintf (stderr, format, XSTRING (dirname)->data); | |
2885 | sprintf (buffer, format, XSTRING (dirname)->data); | |
9b69357e GV |
2886 | /* Don't log the warning before we've initialized!! */ |
2887 | if (initialized) | |
2888 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
2889 | } |
2890 | ||
078e7b4a | 2891 | void |
279499f0 | 2892 | syms_of_lread () |
078e7b4a JB |
2893 | { |
2894 | defsubr (&Sread); | |
2895 | defsubr (&Sread_from_string); | |
2896 | defsubr (&Sintern); | |
2897 | defsubr (&Sintern_soft); | |
d007f5c8 | 2898 | defsubr (&Sunintern); |
078e7b4a | 2899 | defsubr (&Sload); |
228d4b1c | 2900 | defsubr (&Seval_buffer); |
078e7b4a JB |
2901 | defsubr (&Seval_region); |
2902 | defsubr (&Sread_char); | |
2903 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 2904 | defsubr (&Sread_event); |
078e7b4a JB |
2905 | defsubr (&Sget_file_char); |
2906 | defsubr (&Smapatoms); | |
2907 | ||
2908 | DEFVAR_LISP ("obarray", &Vobarray, | |
2909 | "Symbol table for use by `intern' and `read'.\n\ | |
2910 | It is a vector whose length ought to be prime for best results.\n\ | |
2911 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
2912 | to find all the symbols in an obarray, use `mapatoms'."); | |
2913 | ||
2914 | DEFVAR_LISP ("values", &Vvalues, | |
2915 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
2916 | Order is reverse chronological."); | |
2917 | ||
2918 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
2919 | "Stream for read to get input from.\n\ | |
2920 | See documentation of `read' for possible values."); | |
2921 | Vstandard_input = Qt; | |
2922 | ||
2923 | DEFVAR_LISP ("load-path", &Vload_path, | |
2924 | "*List of directories to search for files to load.\n\ | |
2925 | Each element is a string (directory name) or nil (try default directory).\n\ | |
2926 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
692f86ad | 2927 | otherwise to default specified by file `paths.h' when Emacs was built."); |
078e7b4a JB |
2928 | |
2929 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
2930 | "Non-nil iff inside of `load'."); | |
2931 | ||
2932 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
2933 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
2934 | Each element looks like (FILENAME FORMS...).\n\ | |
2935 | When `load' is run and the file-name argument is FILENAME,\n\ | |
2936 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
2937 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
2938 | with no directory specified, since that is how `load' is normally called.\n\ | |
2939 | An error in FORMS does not undo the load,\n\ | |
2940 | but does prevent execution of the rest of the FORMS."); | |
2941 | Vafter_load_alist = Qnil; | |
2942 | ||
ae321d28 RS |
2943 | DEFVAR_LISP ("load-history", &Vload_history, |
2944 | "Alist mapping source file names to symbols and features.\n\ | |
2945 | Each alist element is a list that starts with a file name,\n\ | |
2946 | except for one element (optional) that starts with nil and describes\n\ | |
2947 | definitions evaluated from buffers not visiting files.\n\ | |
2948 | The remaining elements of each list are symbols defined as functions\n\ | |
2949 | or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'."); | |
2950 | Vload_history = Qnil; | |
2951 | ||
20ea2964 RS |
2952 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
2953 | "Full name of file being loaded by `load'."); | |
2954 | Vload_file_name = Qnil; | |
2955 | ||
8a1f1537 RS |
2956 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
2957 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
2958 | Vcurrent_load_list = Qnil; |
2959 | ||
84a15045 RS |
2960 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
2961 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
2962 | The default is nil, which means use the function `read'."); | |
2963 | Vload_read_function = Qnil; | |
2964 | ||
fe0e03f3 KH |
2965 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
2966 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
2967 | This function is for doing code conversion before reading the source file.\n\ | |
2968 | If nil, loading is done without any code conversion.\n\ | |
2969 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
2970 | FULLNAME is the full name of FILE.\n\ | |
2971 | See `load' for the meaning of the remaining arguments."); | |
2972 | Vload_source_file_function = Qnil; | |
2973 | ||
b2a30870 RS |
2974 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
2975 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
2976 | This is useful when the file being loaded is a temporary copy."); | |
2977 | load_force_doc_strings = 0; | |
2978 | ||
94e554db RS |
2979 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
2980 | "Non-nil means `load' converts strings to unibyte whenever possible.\n\ | |
2981 | This is normally used in `load-with-code-conversion'\n\ | |
2982 | for loading non-compiled files."); | |
2983 | load_convert_to_unibyte = 0; | |
2984 | ||
1521a8fa RS |
2985 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
2986 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
2987 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
2988 | Vsource_directory |
2989 | = Fexpand_file_name (build_string ("../"), | |
2990 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
2991 | ||
4b104c41 RS |
2992 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
2993 | "List of files that were preloaded (when dumping Emacs)."); | |
2994 | Vpreloaded_file_list = Qnil; | |
2995 | ||
a90ba1e2 KH |
2996 | /* Vsource_directory was initialized in init_lread. */ |
2997 | ||
d2c6be7f RS |
2998 | load_descriptor_list = Qnil; |
2999 | staticpro (&load_descriptor_list); | |
3000 | ||
8a1f1537 RS |
3001 | Qcurrent_load_list = intern ("current-load-list"); |
3002 | staticpro (&Qcurrent_load_list); | |
3003 | ||
078e7b4a JB |
3004 | Qstandard_input = intern ("standard-input"); |
3005 | staticpro (&Qstandard_input); | |
3006 | ||
3007 | Qread_char = intern ("read-char"); | |
3008 | staticpro (&Qread_char); | |
3009 | ||
3010 | Qget_file_char = intern ("get-file-char"); | |
3011 | staticpro (&Qget_file_char); | |
7bd279cd | 3012 | |
17634846 RS |
3013 | Qbackquote = intern ("`"); |
3014 | staticpro (&Qbackquote); | |
3015 | Qcomma = intern (","); | |
3016 | staticpro (&Qcomma); | |
3017 | Qcomma_at = intern (",@"); | |
3018 | staticpro (&Qcomma_at); | |
3019 | Qcomma_dot = intern (",."); | |
3020 | staticpro (&Qcomma_dot); | |
3021 | ||
74549846 RS |
3022 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3023 | staticpro (&Qinhibit_file_name_operation); | |
3024 | ||
7bd279cd RS |
3025 | Qascii_character = intern ("ascii-character"); |
3026 | staticpro (&Qascii_character); | |
c2225d00 | 3027 | |
2b6cae0c RS |
3028 | Qfunction = intern ("function"); |
3029 | staticpro (&Qfunction); | |
3030 | ||
c2225d00 RS |
3031 | Qload = intern ("load"); |
3032 | staticpro (&Qload); | |
20ea2964 RS |
3033 | |
3034 | Qload_file_name = intern ("load-file-name"); | |
3035 | staticpro (&Qload_file_name); | |
11938f10 KH |
3036 | |
3037 | staticpro (&dump_path); | |
4ad679f9 EN |
3038 | |
3039 | staticpro (&read_objects); | |
3040 | read_objects = Qnil; | |
078e7b4a | 3041 | } |