Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
68c45bf0 | 2 | Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 1999 |
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 | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
fe0e03f3 | 32 | #include "charset.h" |
57bda87a | 33 | #include <epaths.h> |
078e7b4a | 34 | #include "commands.h" |
e37c0805 | 35 | #include "keyboard.h" |
7bd279cd | 36 | #include "termhooks.h" |
078e7b4a JB |
37 | |
38 | #ifdef lint | |
39 | #include <sys/inode.h> | |
40 | #endif /* lint */ | |
41 | ||
79051982 RS |
42 | #ifdef MSDOS |
43 | #if __DJGPP__ < 2 | |
44 | #include <unistd.h> /* to get X_OK */ | |
45 | #endif | |
46 | #include "msdos.h" | |
47 | #endif | |
48 | ||
c1a2f60a AS |
49 | #ifdef HAVE_UNISTD_H |
50 | #include <unistd.h> | |
51 | #endif | |
52 | ||
078e7b4a JB |
53 | #ifndef X_OK |
54 | #define X_OK 01 | |
55 | #endif | |
56 | ||
078e7b4a | 57 | #include <math.h> |
078e7b4a | 58 | |
c011e9a5 RS |
59 | #ifdef HAVE_SETLOCALE |
60 | #include <locale.h> | |
61 | #endif /* HAVE_SETLOCALE */ | |
62 | ||
f7d279f0 RS |
63 | #ifndef O_RDONLY |
64 | #define O_RDONLY 0 | |
65 | #endif | |
66 | ||
68c45bf0 PE |
67 | #ifdef HAVE_FTELLO |
68 | #define file_offset off_t | |
69 | #define file_tell ftello | |
70 | #else | |
71 | #define file_offset long | |
72 | #define file_tell ftell | |
73 | #endif | |
74 | ||
03695ace | 75 | #ifndef USE_CRT_DLL |
2c1b5dbe | 76 | extern int errno; |
03695ace | 77 | #endif |
2c1b5dbe | 78 | |
8a1f1537 | 79 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 80 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 81 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 82 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 83 | Lisp_Object Qinhibit_file_name_operation; |
7bd279cd RS |
84 | |
85 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 86 | extern Lisp_Object Qfile_exists_p; |
078e7b4a JB |
87 | |
88 | /* non-zero if inside `load' */ | |
89 | int load_in_progress; | |
90 | ||
1521a8fa RS |
91 | /* Directory in which the sources were found. */ |
92 | Lisp_Object Vsource_directory; | |
93 | ||
078e7b4a JB |
94 | /* Search path for files to be loaded. */ |
95 | Lisp_Object Vload_path; | |
96 | ||
4116ab9f KH |
97 | /* File name of user's init file. */ |
98 | Lisp_Object Vuser_init_file; | |
99 | ||
ae321d28 RS |
100 | /* This is the user-visible association list that maps features to |
101 | lists of defs in their load files. */ | |
102 | Lisp_Object Vload_history; | |
103 | ||
20ea2964 | 104 | /* This is used to build the load history. */ |
ae321d28 RS |
105 | Lisp_Object Vcurrent_load_list; |
106 | ||
4b104c41 RS |
107 | /* List of files that were preloaded. */ |
108 | Lisp_Object Vpreloaded_file_list; | |
109 | ||
20ea2964 RS |
110 | /* Name of file actually being read by `load'. */ |
111 | Lisp_Object Vload_file_name; | |
112 | ||
84a15045 RS |
113 | /* Function to use for reading, in `load' and friends. */ |
114 | Lisp_Object Vload_read_function; | |
115 | ||
4ad679f9 EN |
116 | /* The association list of objects read with the #n=object form. |
117 | Each member of the list has the form (n . object), and is used to | |
118 | look up the object for the corresponding #n# construct. | |
119 | It must be set to nil before all top-level calls to read0. */ | |
120 | Lisp_Object read_objects; | |
121 | ||
b2a30870 RS |
122 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
123 | static int load_force_doc_strings; | |
124 | ||
94e554db RS |
125 | /* Nonzero means read should convert strings to unibyte. */ |
126 | static int load_convert_to_unibyte; | |
127 | ||
fe0e03f3 KH |
128 | /* Function to use for loading an Emacs lisp source file (not |
129 | compiled) instead of readevalloop. */ | |
130 | Lisp_Object Vload_source_file_function; | |
131 | ||
1ffcc3b1 DL |
132 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
133 | Lisp_Object Vbyte_boolean_vars; | |
134 | ||
d2c6be7f RS |
135 | /* List of descriptors now open for Fload. */ |
136 | static Lisp_Object load_descriptor_list; | |
137 | ||
b2a30870 | 138 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
139 | static FILE *instream; |
140 | ||
141 | /* When nonzero, read conses in pure space */ | |
142 | static int read_pure; | |
143 | ||
b2a30870 | 144 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 145 | static int read_from_string_index; |
bed23cb2 | 146 | static int read_from_string_index_byte; |
078e7b4a | 147 | static int read_from_string_limit; |
17634846 | 148 | |
6f7f43d5 RS |
149 | /* Number of bytes left to read in the buffer character |
150 | that `readchar' has already advanced over. */ | |
151 | static int readchar_backlog; | |
152 | ||
c15cfd1f | 153 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
154 | static char *saved_doc_string; |
155 | /* Length of buffer allocated in saved_doc_string. */ | |
156 | static int saved_doc_string_size; | |
157 | /* Length of actual data in saved_doc_string. */ | |
158 | static int saved_doc_string_length; | |
159 | /* This is the file position that string came from. */ | |
68c45bf0 | 160 | static file_offset saved_doc_string_position; |
b2a30870 | 161 | |
c15cfd1f RS |
162 | /* This contains the previous string skipped with #@. |
163 | We copy it from saved_doc_string when a new string | |
164 | is put in saved_doc_string. */ | |
165 | static char *prev_saved_doc_string; | |
166 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
167 | static int prev_saved_doc_string_size; | |
168 | /* Length of actual data in prev_saved_doc_string. */ | |
169 | static int prev_saved_doc_string_length; | |
170 | /* This is the file position that string came from. */ | |
68c45bf0 | 171 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 172 | |
17634846 RS |
173 | /* Nonzero means inside a new-style backquote |
174 | with no surrounding parentheses. | |
175 | Fread initializes this to zero, so we need not specbind it | |
176 | or worry about what happens to it when there is an error. */ | |
177 | static int new_backquote_flag; | |
078e7b4a JB |
178 | \f |
179 | /* Handle unreading and rereading of characters. | |
180 | Write READCHAR to read a character, | |
fe0e03f3 KH |
181 | UNREAD(c) to unread c to be read again. |
182 | ||
183 | These macros actually read/unread a byte code, multibyte characters | |
184 | are not handled here. The caller should manage them if necessary. | |
185 | */ | |
078e7b4a JB |
186 | |
187 | #define READCHAR readchar (readcharfun) | |
188 | #define UNREAD(c) unreadchar (readcharfun, c) | |
189 | ||
190 | static int | |
191 | readchar (readcharfun) | |
192 | Lisp_Object readcharfun; | |
193 | { | |
194 | Lisp_Object tem; | |
95384e1e | 195 | register int c; |
078e7b4a | 196 | |
cfff016d | 197 | if (BUFFERP (readcharfun)) |
078e7b4a | 198 | { |
bed23cb2 | 199 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 200 | |
bed23cb2 RS |
201 | int pt_byte = BUF_PT_BYTE (inbuffer); |
202 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 203 | |
00a9a935 RS |
204 | if (readchar_backlog > 0) |
205 | /* We get the address of the byte just passed, | |
206 | which is the last byte of the character. | |
207 | The other bytes in this character are consecutive with it, | |
208 | because the gap can't be in the middle of a character. */ | |
209 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
210 | - --readchar_backlog); | |
211 | ||
bed23cb2 RS |
212 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
213 | return -1; | |
078e7b4a | 214 | |
00a9a935 RS |
215 | readchar_backlog = -1; |
216 | ||
bed23cb2 RS |
217 | if (! NILP (inbuffer->enable_multibyte_characters)) |
218 | { | |
00a9a935 | 219 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
220 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
221 | BUF_INC_POS (inbuffer, pt_byte); | |
222 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
223 | } | |
224 | else | |
225 | { | |
226 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
227 | pt_byte++; | |
6f7f43d5 | 228 | } |
bed23cb2 | 229 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 230 | |
bed23cb2 | 231 | return c; |
078e7b4a | 232 | } |
cfff016d | 233 | if (MARKERP (readcharfun)) |
078e7b4a | 234 | { |
bed23cb2 | 235 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 236 | |
bed23cb2 RS |
237 | int bytepos = marker_byte_position (readcharfun); |
238 | int orig_bytepos = bytepos; | |
6f7f43d5 | 239 | |
00a9a935 RS |
240 | if (readchar_backlog > 0) |
241 | /* We get the address of the byte just passed, | |
242 | which is the last byte of the character. | |
243 | The other bytes in this character are consecutive with it, | |
244 | because the gap can't be in the middle of a character. */ | |
245 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
246 | - --readchar_backlog); | |
247 | ||
bed23cb2 RS |
248 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
249 | return -1; | |
6f7f43d5 | 250 | |
00a9a935 RS |
251 | readchar_backlog = -1; |
252 | ||
bed23cb2 RS |
253 | if (! NILP (inbuffer->enable_multibyte_characters)) |
254 | { | |
00a9a935 | 255 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
256 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
257 | BUF_INC_POS (inbuffer, bytepos); | |
258 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
259 | } | |
260 | else | |
261 | { | |
262 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
263 | bytepos++; | |
6f7f43d5 RS |
264 | } |
265 | ||
bed23cb2 RS |
266 | XMARKER (readcharfun)->bytepos = bytepos; |
267 | XMARKER (readcharfun)->charpos++; | |
268 | ||
269 | return c; | |
078e7b4a | 270 | } |
ad0153e4 RS |
271 | |
272 | if (EQ (readcharfun, Qlambda)) | |
273 | return read_bytecode_char (0); | |
274 | ||
078e7b4a | 275 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
276 | { |
277 | c = getc (instream); | |
278 | #ifdef EINTR | |
279 | /* Interrupted reads have been observed while reading over the network */ | |
280 | while (c == EOF && ferror (instream) && errno == EINTR) | |
281 | { | |
282 | clearerr (instream); | |
283 | c = getc (instream); | |
284 | } | |
285 | #endif | |
286 | return c; | |
287 | } | |
078e7b4a | 288 | |
cfff016d | 289 | if (STRINGP (readcharfun)) |
078e7b4a | 290 | { |
bed23cb2 | 291 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 292 | c = -1; |
f0354c03 | 293 | else |
bed23cb2 RS |
294 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
295 | read_from_string_index, | |
296 | read_from_string_index_byte); | |
6f7f43d5 | 297 | |
078e7b4a JB |
298 | return c; |
299 | } | |
300 | ||
301 | tem = call0 (readcharfun); | |
302 | ||
265a9e55 | 303 | if (NILP (tem)) |
078e7b4a JB |
304 | return -1; |
305 | return XINT (tem); | |
306 | } | |
307 | ||
308 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
309 | If the stream is a user function, call it with the char as argument. */ | |
310 | ||
311 | static void | |
312 | unreadchar (readcharfun, c) | |
313 | Lisp_Object readcharfun; | |
314 | int c; | |
315 | { | |
92fddec9 KH |
316 | if (c == -1) |
317 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
318 | since readchar didn't advance it when we read it. */ | |
319 | ; | |
cfff016d | 320 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 321 | { |
bed23cb2 RS |
322 | struct buffer *b = XBUFFER (readcharfun); |
323 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 324 | |
00a9a935 RS |
325 | if (readchar_backlog >= 0) |
326 | readchar_backlog++; | |
bed23cb2 | 327 | else |
00a9a935 RS |
328 | { |
329 | BUF_PT (b)--; | |
330 | if (! NILP (b->enable_multibyte_characters)) | |
331 | BUF_DEC_POS (b, bytepos); | |
332 | else | |
333 | bytepos--; | |
d7760ca9 | 334 | |
00a9a935 RS |
335 | BUF_PT_BYTE (b) = bytepos; |
336 | } | |
d7760ca9 | 337 | } |
cfff016d | 338 | else if (MARKERP (readcharfun)) |
d7760ca9 | 339 | { |
bed23cb2 RS |
340 | struct buffer *b = XMARKER (readcharfun)->buffer; |
341 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 342 | |
00a9a935 RS |
343 | if (readchar_backlog >= 0) |
344 | readchar_backlog++; | |
bed23cb2 | 345 | else |
00a9a935 RS |
346 | { |
347 | XMARKER (readcharfun)->charpos--; | |
348 | if (! NILP (b->enable_multibyte_characters)) | |
349 | BUF_DEC_POS (b, bytepos); | |
350 | else | |
351 | bytepos--; | |
d7760ca9 | 352 | |
00a9a935 RS |
353 | XMARKER (readcharfun)->bytepos = bytepos; |
354 | } | |
d7760ca9 | 355 | } |
cfff016d | 356 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
357 | { |
358 | read_from_string_index--; | |
359 | read_from_string_index_byte | |
360 | = string_char_to_byte (readcharfun, read_from_string_index); | |
361 | } | |
ad0153e4 RS |
362 | else if (EQ (readcharfun, Qlambda)) |
363 | read_bytecode_char (1); | |
078e7b4a JB |
364 | else if (EQ (readcharfun, Qget_file_char)) |
365 | ungetc (c, instream); | |
366 | else | |
367 | call1 (readcharfun, make_number (c)); | |
368 | } | |
369 | ||
370 | static Lisp_Object read0 (), read1 (), read_list (), read_vector (); | |
6f7f43d5 | 371 | static int read_multibyte (); |
9e062b6c RS |
372 | static Lisp_Object substitute_object_recurse (); |
373 | static void substitute_object_in_subtree (), substitute_in_interval (); | |
374 | ||
078e7b4a | 375 | \f |
bed23cb2 | 376 | /* Get a character from the tty. */ |
078e7b4a | 377 | |
3d9b22be JB |
378 | extern Lisp_Object read_char (); |
379 | ||
f42be754 JB |
380 | /* Read input events until we get one that's acceptable for our purposes. |
381 | ||
382 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
383 | until we get a character we like, and then stuffed into | |
384 | unread_switch_frame. | |
385 | ||
386 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
387 | if the unmodified version of the symbol has a Qascii_character | |
388 | property, and use that character, if present. | |
389 | ||
390 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
391 | get isn't an ASCII character with modifiers. If it's zero but | |
392 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
393 | character. |
394 | ||
395 | If INPUT_METHOD is nonzero, we invoke the current input method | |
396 | if the character warrants that. */ | |
cc39bc38 | 397 | |
f42be754 | 398 | Lisp_Object |
bb49a192 RS |
399 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
400 | input_method) | |
401 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 402 | { |
153a17b7 KH |
403 | register Lisp_Object val, delayed_switch_frame; |
404 | ||
5dbf89bc GM |
405 | #ifdef HAVE_WINDOW_SYSTEM |
406 | if (display_busy_cursor_p) | |
407 | cancel_busy_cursor (); | |
408 | #endif | |
409 | ||
153a17b7 | 410 | delayed_switch_frame = Qnil; |
f42be754 JB |
411 | |
412 | /* Read until we get an acceptable event. */ | |
413 | retry: | |
bb49a192 RS |
414 | val = read_char (0, 0, 0, |
415 | (input_method ? Qnil : Qt), | |
416 | 0); | |
f42be754 | 417 | |
cfff016d | 418 | if (BUFFERP (val)) |
6c82d689 KH |
419 | goto retry; |
420 | ||
f42be754 | 421 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 422 | character. This is better than signaling an error just because |
f42be754 JB |
423 | the last characters were typed to a separate minibuffer frame, |
424 | for example. Eventually, some code which can deal with | |
425 | switch-frame events will read it and process it. */ | |
426 | if (no_switch_frame | |
427 | && EVENT_HAS_PARAMETERS (val) | |
428 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
429 | { | |
430 | delayed_switch_frame = val; | |
431 | goto retry; | |
432 | } | |
433 | ||
434 | if (ascii_required) | |
435 | { | |
436 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 437 | if (SYMBOLP (val)) |
f42be754 | 438 | { |
95384e1e | 439 | Lisp_Object tem, tem1; |
f42be754 JB |
440 | tem = Fget (val, Qevent_symbol_element_mask); |
441 | if (!NILP (tem)) | |
442 | { | |
443 | tem1 = Fget (Fcar (tem), Qascii_character); | |
444 | /* Merge this symbol's modifier bits | |
445 | with the ASCII equivalent of its basic code. */ | |
446 | if (!NILP (tem1)) | |
baf69866 | 447 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
448 | } |
449 | } | |
450 | ||
451 | /* If we don't have a character now, deal with it appropriately. */ | |
cfff016d | 452 | if (!INTEGERP (val)) |
f42be754 JB |
453 | { |
454 | if (error_nonascii) | |
455 | { | |
1ec84625 | 456 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
457 | error ("Non-character input-event"); |
458 | } | |
459 | else | |
460 | goto retry; | |
461 | } | |
462 | } | |
463 | ||
464 | if (! NILP (delayed_switch_frame)) | |
465 | unread_switch_frame = delayed_switch_frame; | |
466 | ||
5dbf89bc GM |
467 | #ifdef HAVE_WINDOW_SYSTEM |
468 | if (display_busy_cursor_p) | |
469 | start_busy_cursor (); | |
470 | #endif | |
f42be754 | 471 | return val; |
f42be754 JB |
472 | } |
473 | ||
bb49a192 | 474 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
078e7b4a | 475 | "Read a character from the command input (keyboard or macro).\n\ |
e51e47f7 JB |
476 | It is returned as a number.\n\ |
477 | If the user generates an event which is not a character (i.e. a mouse\n\ | |
e37c0805 JB |
478 | click or function key event), `read-char' signals an error. As an\n\ |
479 | exception, switch-frame events are put off until non-ASCII events can\n\ | |
480 | be read.\n\ | |
481 | If you want to read non-character events, or ignore them, call\n\ | |
bb49a192 RS |
482 | `read-event' or `read-char-exclusive' instead.\n\ |
483 | \n\ | |
484 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
485 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
486 | input method is turned on in the current buffer, that input method\n\ | |
487 | is used for reading a character.") | |
488 | (prompt, inherit_input_method) | |
489 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 490 | { |
bb49a192 RS |
491 | if (! NILP (prompt)) |
492 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 493 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
494 | } |
495 | ||
bb49a192 RS |
496 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
497 | "Read an event object from the input stream.\n\ | |
498 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
499 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
500 | input method is turned on in the current buffer, that input method\n\ | |
501 | is used for reading a character.") | |
502 | (prompt, inherit_input_method) | |
503 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 504 | { |
bb49a192 RS |
505 | if (! NILP (prompt)) |
506 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 507 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
508 | } |
509 | ||
bb49a192 | 510 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
078e7b4a | 511 | "Read a character from the command input (keyboard or macro).\n\ |
bb49a192 RS |
512 | It is returned as a number. Non-character events are ignored.\n\ |
513 | \n\ | |
514 | If the optional argument PROMPT is non-nil, display that as a prompt.\n\ | |
fc351d2f KH |
515 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some\n\ |
516 | input method is turned on in the current buffer, that input method\n\ | |
517 | is used for reading a character.") | |
518 | (prompt, inherit_input_method) | |
519 | Lisp_Object prompt, inherit_input_method; | |
078e7b4a | 520 | { |
bb49a192 RS |
521 | if (! NILP (prompt)) |
522 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 523 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 524 | } |
078e7b4a JB |
525 | |
526 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
527 | "Don't use this yourself.") | |
528 | () | |
529 | { | |
530 | register Lisp_Object val; | |
1805de4f | 531 | XSETINT (val, getc (instream)); |
078e7b4a JB |
532 | return val; |
533 | } | |
534 | \f | |
232ccf27 DL |
535 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
536 | Lisp_Object (*) (), int, | |
537 | Lisp_Object, Lisp_Object)); | |
538 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
539 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
078e7b4a | 540 | |
da84f340 GM |
541 | /* Non-zero means load dangerous compiled Lisp files. */ |
542 | ||
543 | int load_dangerous_libraries; | |
544 | ||
545 | /* A regular expression used to detect files compiled with Emacs. */ | |
546 | ||
547 | static Lisp_Object Vbytecomp_version_regexp; | |
548 | ||
549 | ||
550 | /* Value is non-zero if the file asswociated with file descriptor FD | |
551 | is a compiled Lisp file that's safe to load. Only files compiled | |
552 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
553 | to a crash in Fbyte_code because of an incompatible change in the | |
554 | byte compiler. */ | |
555 | ||
556 | static int | |
557 | safe_to_load_p (fd) | |
558 | int fd; | |
559 | { | |
560 | char buf[512]; | |
561 | int nbytes, i; | |
562 | int safe_p = 1; | |
563 | ||
564 | /* Read the first few bytes from the file, and look for a line | |
565 | specifying the byte compiler version used. */ | |
566 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
567 | if (nbytes > 0) | |
568 | { | |
569 | buf[nbytes] = '\0'; | |
570 | ||
571 | /* Skip to the next newline, skipping over the initial `ELC' | |
572 | with NUL bytes following it. */ | |
573 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
574 | ; | |
575 | ||
576 | if (i < nbytes | |
577 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
578 | buf + i) < 0) | |
579 | safe_p = 0; | |
580 | } | |
581 | ||
582 | lseek (fd, 0, SEEK_SET); | |
583 | return safe_p; | |
584 | } | |
585 | ||
586 | ||
f0a50954 | 587 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
078e7b4a JB |
588 | "Execute a file of Lisp code named FILE.\n\ |
589 | First try FILE with `.elc' appended, then try with `.el',\n\ | |
590 | then try FILE unmodified.\n\ | |
591 | This function searches the directories in `load-path'.\n\ | |
592 | If optional second arg NOERROR is non-nil,\n\ | |
593 | report no error if FILE doesn't exist.\n\ | |
594 | Print messages at start and end of loading unless\n\ | |
595 | optional third arg NOMESSAGE is non-nil.\n\ | |
596 | If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\ | |
597 | suffixes `.elc' or `.el' to the specified name FILE.\n\ | |
211f7dcd | 598 | If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\ |
7b88a4cf | 599 | the suffix `.elc' or `.el'; don't accept just FILE unless\n\ |
211f7dcd | 600 | it ends in one of those suffixes or includes a directory name.\n\ |
078e7b4a | 601 | Return t if file exists.") |
f0a50954 RS |
602 | (file, noerror, nomessage, nosuffix, must_suffix) |
603 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; | |
078e7b4a JB |
604 | { |
605 | register FILE *stream; | |
606 | register int fd = -1; | |
607 | register Lisp_Object lispstream; | |
078e7b4a JB |
608 | int count = specpdl_ptr - specpdl; |
609 | Lisp_Object temp; | |
610 | struct gcpro gcpro1; | |
611 | Lisp_Object found; | |
04fc68e7 RS |
612 | /* 1 means we printed the ".el is newer" message. */ |
613 | int newer = 0; | |
614 | /* 1 means we are loading a compiled file. */ | |
615 | int compiled = 0; | |
c2225d00 | 616 | Lisp_Object handler; |
456c67a4 | 617 | int safe_p = 1; |
229ba775 | 618 | char *fmode = "r"; |
317073d5 | 619 | #ifdef DOS_NT |
229ba775 | 620 | fmode = "rt"; |
317073d5 | 621 | #endif /* DOS_NT */ |
078e7b4a | 622 | |
0745dce9 | 623 | CHECK_STRING (file, 0); |
078e7b4a | 624 | |
c2225d00 | 625 | /* If file name is magic, call the handler. */ |
0745dce9 | 626 | handler = Ffind_file_name_handler (file, Qload); |
c2225d00 | 627 | if (!NILP (handler)) |
0745dce9 | 628 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); |
c2225d00 | 629 | |
07a0bda3 RS |
630 | /* Do this after the handler to avoid |
631 | the need to gcpro noerror, nomessage and nosuffix. | |
632 | (Below here, we care only whether they are nil or not.) */ | |
0745dce9 | 633 | file = Fsubstitute_in_file_name (file); |
07a0bda3 | 634 | |
078e7b4a JB |
635 | /* Avoid weird lossage with null string as arg, |
636 | since it would try to load a directory as a Lisp file */ | |
0745dce9 | 637 | if (XSTRING (file)->size > 0) |
078e7b4a | 638 | { |
471aa4a0 | 639 | int size = STRING_BYTES (XSTRING (file)); |
211f7dcd | 640 | |
0745dce9 | 641 | GCPRO1 (file); |
211f7dcd RS |
642 | |
643 | if (! NILP (must_suffix)) | |
644 | { | |
645 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
646 | if (size > 3 | |
647 | && !strcmp (XSTRING (file)->data + size - 3, ".el")) | |
648 | must_suffix = Qnil; | |
649 | else if (size > 4 | |
650 | && !strcmp (XSTRING (file)->data + size - 4, ".elc")) | |
651 | must_suffix = Qnil; | |
652 | /* Don't insist on adding a suffix | |
653 | if the argument includes a directory name. */ | |
654 | else if (! NILP (Ffile_name_directory (file))) | |
655 | must_suffix = Qnil; | |
656 | } | |
657 | ||
f0a50954 RS |
658 | fd = openp (Vload_path, file, |
659 | (!NILP (nosuffix) ? "" | |
9b7c9ebd DL |
660 | : ! NILP (must_suffix) ? ".elc.gz:.elc:.el.gz:.el" |
661 | : ".elc:.elc.gz:.el.gz:.el:"), | |
078e7b4a | 662 | &found, 0); |
5a6e5452 | 663 | UNGCPRO; |
078e7b4a JB |
664 | } |
665 | ||
666 | if (fd < 0) | |
667 | { | |
265a9e55 | 668 | if (NILP (noerror)) |
078e7b4a JB |
669 | while (1) |
670 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), | |
0745dce9 | 671 | Fcons (file, Qnil))); |
078e7b4a JB |
672 | else |
673 | return Qnil; | |
674 | } | |
675 | ||
ba0d1195 | 676 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
677 | if (EQ (Qt, Vuser_init_file)) |
678 | Vuser_init_file = found; | |
679 | ||
5e24a1f7 | 680 | /* If FD is 0, that means openp found a magic file. */ |
74549846 RS |
681 | if (fd == 0) |
682 | { | |
5e24a1f7 KH |
683 | if (NILP (Fequal (found, file))) |
684 | /* If FOUND is a different file name from FILE, | |
685 | find its handler even if we have already inhibited | |
686 | the `load' operation on FILE. */ | |
687 | handler = Ffind_file_name_handler (found, Qt); | |
688 | else | |
689 | handler = Ffind_file_name_handler (found, Qload); | |
690 | if (! NILP (handler)) | |
691 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
692 | } |
693 | ||
5e24a1f7 KH |
694 | /* Load .elc files directly, but not when they are |
695 | remote and have no handler! */ | |
471aa4a0 | 696 | if (!bcmp (&(XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 4]), |
5e24a1f7 KH |
697 | ".elc", 4) |
698 | && fd != 0) | |
078e7b4a JB |
699 | { |
700 | struct stat s1, s2; | |
701 | int result; | |
702 | ||
da84f340 GM |
703 | if (!safe_to_load_p (fd)) |
704 | { | |
705 | safe_p = 0; | |
706 | if (!load_dangerous_libraries) | |
707 | error ("File `%s' was not compiled in Emacs", | |
708 | XSTRING (found)->data); | |
709 | else if (!NILP (nomessage)) | |
710 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
711 | } | |
712 | ||
04fc68e7 RS |
713 | compiled = 1; |
714 | ||
317073d5 | 715 | #ifdef DOS_NT |
229ba775 | 716 | fmode = "rb"; |
317073d5 | 717 | #endif /* DOS_NT */ |
4ff37b08 | 718 | stat ((char *)XSTRING (found)->data, &s1); |
471aa4a0 | 719 | XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 0; |
4ff37b08 | 720 | result = stat ((char *)XSTRING (found)->data, &s2); |
078e7b4a | 721 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
51ac6f83 | 722 | { |
04fc68e7 RS |
723 | /* Make the progress messages mention that source is newer. */ |
724 | newer = 1; | |
725 | ||
726 | /* If we won't print another message, mention this anyway. */ | |
727 | if (! NILP (nomessage)) | |
e28552a4 RS |
728 | message_with_string ("Source file `%s' newer than byte-compiled file", |
729 | found, 1); | |
51ac6f83 | 730 | } |
471aa4a0 | 731 | XSTRING (found)->data[STRING_BYTES (XSTRING (found)) - 1] = 'c'; |
078e7b4a | 732 | } |
fe0e03f3 KH |
733 | else |
734 | { | |
da84f340 GM |
735 | load_source: |
736 | ||
fe0e03f3 KH |
737 | /* We are loading a source file (*.el). */ |
738 | if (!NILP (Vload_source_file_function)) | |
739 | { | |
5e24a1f7 | 740 | if (fd != 0) |
68c45bf0 | 741 | emacs_close (fd); |
7075e5a5 | 742 | return call4 (Vload_source_file_function, found, file, |
fe0e03f3 KH |
743 | NILP (noerror) ? Qnil : Qt, |
744 | NILP (nomessage) ? Qnil : Qt); | |
745 | } | |
746 | } | |
078e7b4a | 747 | |
229ba775 | 748 | #ifdef WINDOWSNT |
68c45bf0 | 749 | emacs_close (fd); |
229ba775 EZ |
750 | stream = fopen ((char *) XSTRING (found)->data, fmode); |
751 | #else /* not WINDOWSNT */ | |
752 | stream = fdopen (fd, fmode); | |
753 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
754 | if (stream == 0) |
755 | { | |
68c45bf0 | 756 | emacs_close (fd); |
0745dce9 | 757 | error ("Failure to create stdio stream for %s", XSTRING (file)->data); |
078e7b4a JB |
758 | } |
759 | ||
4b104c41 RS |
760 | if (! NILP (Vpurify_flag)) |
761 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
762 | ||
04fc68e7 RS |
763 | if (NILP (nomessage)) |
764 | { | |
da84f340 GM |
765 | if (!safe_p) |
766 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
767 | file, 1); | |
768 | else if (!compiled) | |
e28552a4 | 769 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 770 | else if (newer) |
e28552a4 RS |
771 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
772 | file, 1); | |
db5cae4b | 773 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 774 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 775 | } |
078e7b4a | 776 | |
0745dce9 | 777 | GCPRO1 (file); |
838abf56 | 778 | lispstream = Fcons (Qnil, Qnil); |
c1d497be KR |
779 | XSETFASTINT (XCAR (lispstream), (EMACS_UINT)stream >> 16); |
780 | XSETFASTINT (XCDR (lispstream), (EMACS_UINT)stream & 0xffff); | |
078e7b4a | 781 | record_unwind_protect (load_unwind, lispstream); |
d2c6be7f | 782 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 783 | specbind (Qload_file_name, found); |
74549846 | 784 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
785 | load_descriptor_list |
786 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 787 | load_in_progress++; |
976350af | 788 | readevalloop (Qget_file_char, stream, file, Feval, 0, Qnil, Qnil); |
078e7b4a JB |
789 | unbind_to (count, Qnil); |
790 | ||
791 | /* Run any load-hooks for this file. */ | |
0745dce9 | 792 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 793 | if (!NILP (temp)) |
078e7b4a JB |
794 | Fprogn (Fcdr (temp)); |
795 | UNGCPRO; | |
796 | ||
b2a30870 RS |
797 | if (saved_doc_string) |
798 | free (saved_doc_string); | |
799 | saved_doc_string = 0; | |
800 | saved_doc_string_size = 0; | |
801 | ||
c15cfd1f | 802 | if (prev_saved_doc_string) |
3cb65b0e | 803 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
804 | prev_saved_doc_string = 0; |
805 | prev_saved_doc_string_size = 0; | |
806 | ||
265a9e55 | 807 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 808 | { |
da84f340 GM |
809 | if (!safe_p) |
810 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
811 | file, 1); | |
812 | else if (!compiled) | |
e28552a4 | 813 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 814 | else if (newer) |
e28552a4 RS |
815 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
816 | file, 1); | |
db5cae4b | 817 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 818 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 819 | } |
078e7b4a JB |
820 | return Qt; |
821 | } | |
822 | ||
823 | static Lisp_Object | |
824 | load_unwind (stream) /* used as unwind-protect function in load */ | |
825 | Lisp_Object stream; | |
826 | { | |
c1d497be KR |
827 | fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16 |
828 | | XFASTINT (XCDR (stream)))); | |
078e7b4a JB |
829 | if (--load_in_progress < 0) load_in_progress = 0; |
830 | return Qnil; | |
831 | } | |
832 | ||
d2c6be7f RS |
833 | static Lisp_Object |
834 | load_descriptor_unwind (oldlist) | |
835 | Lisp_Object oldlist; | |
836 | { | |
837 | load_descriptor_list = oldlist; | |
838abf56 | 838 | return Qnil; |
d2c6be7f RS |
839 | } |
840 | ||
841 | /* Close all descriptors in use for Floads. | |
842 | This is used when starting a subprocess. */ | |
843 | ||
844 | void | |
845 | close_load_descs () | |
846 | { | |
f3849f25 | 847 | #ifndef WINDOWSNT |
d2c6be7f | 848 | Lisp_Object tail; |
c1d497be | 849 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 850 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 851 | #endif |
d2c6be7f | 852 | } |
078e7b4a JB |
853 | \f |
854 | static int | |
855 | complete_filename_p (pathname) | |
856 | Lisp_Object pathname; | |
857 | { | |
858 | register unsigned char *s = XSTRING (pathname)->data; | |
317073d5 RS |
859 | return (IS_DIRECTORY_SEP (s[0]) |
860 | || (XSTRING (pathname)->size > 2 | |
861 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) | |
078e7b4a JB |
862 | #ifdef ALTOS |
863 | || *s == '@' | |
864 | #endif | |
865 | #ifdef VMS | |
866 | || index (s, ':') | |
867 | #endif /* VMS */ | |
868 | ); | |
869 | } | |
870 | ||
871 | /* Search for a file whose name is STR, looking in directories | |
872 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
873 | SUFFIX is a string containing possible suffixes separated by colons. | |
874 | On success, returns a file descriptor. On failure, returns -1. | |
875 | ||
876 | EXEC_ONLY nonzero means don't open the files, | |
877 | just look for one that is executable. In this case, | |
878 | returns 1 on success. | |
879 | ||
880 | If STOREPTR is nonzero, it points to a slot where the name of | |
881 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
882 | nil is stored there on failure. |
883 | ||
884 | If the file we find is remote, return 0 | |
885 | but store the found remote file name in *STOREPTR. | |
886 | We do not check for remote files if EXEC_ONLY is nonzero. */ | |
078e7b4a JB |
887 | |
888 | int | |
889 | openp (path, str, suffix, storeptr, exec_only) | |
890 | Lisp_Object path, str; | |
891 | char *suffix; | |
892 | Lisp_Object *storeptr; | |
893 | int exec_only; | |
894 | { | |
895 | register int fd; | |
896 | int fn_size = 100; | |
897 | char buf[100]; | |
898 | register char *fn = buf; | |
899 | int absolute = 0; | |
900 | int want_size; | |
74549846 | 901 | Lisp_Object filename; |
078e7b4a | 902 | struct stat st; |
5a6e5452 | 903 | struct gcpro gcpro1; |
078e7b4a | 904 | |
5a6e5452 | 905 | GCPRO1 (str); |
078e7b4a JB |
906 | if (storeptr) |
907 | *storeptr = Qnil; | |
908 | ||
909 | if (complete_filename_p (str)) | |
910 | absolute = 1; | |
911 | ||
265a9e55 | 912 | for (; !NILP (path); path = Fcdr (path)) |
078e7b4a JB |
913 | { |
914 | char *nsuffix; | |
915 | ||
916 | filename = Fexpand_file_name (str, Fcar (path)); | |
917 | if (!complete_filename_p (filename)) | |
918 | /* If there are non-absolute elts in PATH (eg ".") */ | |
919 | /* Of course, this could conceivably lose if luser sets | |
920 | default-directory to be something non-absolute... */ | |
921 | { | |
922 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
923 | if (!complete_filename_p (filename)) | |
924 | /* Give up on this path element! */ | |
925 | continue; | |
926 | } | |
927 | ||
928 | /* Calculate maximum size of any filename made from | |
929 | this path element/specified file name and any possible suffix. */ | |
471aa4a0 | 930 | want_size = strlen (suffix) + STRING_BYTES (XSTRING (filename)) + 1; |
078e7b4a JB |
931 | if (fn_size < want_size) |
932 | fn = (char *) alloca (fn_size = 100 + want_size); | |
933 | ||
934 | nsuffix = suffix; | |
935 | ||
936 | /* Loop over suffixes. */ | |
937 | while (1) | |
938 | { | |
939 | char *esuffix = (char *) index (nsuffix, ':'); | |
940 | int lsuffix = esuffix ? esuffix - nsuffix : strlen (nsuffix); | |
74549846 | 941 | Lisp_Object handler; |
078e7b4a | 942 | |
c49afcd7 RS |
943 | /* Concatenate path element/specified name with the suffix. |
944 | If the directory starts with /:, remove that. */ | |
945 | if (XSTRING (filename)->size > 2 | |
946 | && XSTRING (filename)->data[0] == '/' | |
947 | && XSTRING (filename)->data[1] == ':') | |
948 | { | |
949 | strncpy (fn, XSTRING (filename)->data + 2, | |
471aa4a0 KH |
950 | STRING_BYTES (XSTRING (filename)) - 2); |
951 | fn[STRING_BYTES (XSTRING (filename)) - 2] = 0; | |
c49afcd7 RS |
952 | } |
953 | else | |
954 | { | |
471aa4a0 KH |
955 | strncpy (fn, XSTRING (filename)->data, |
956 | STRING_BYTES (XSTRING (filename))); | |
957 | fn[STRING_BYTES (XSTRING (filename))] = 0; | |
c49afcd7 RS |
958 | } |
959 | ||
078e7b4a JB |
960 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
961 | strncat (fn, nsuffix, lsuffix); | |
962 | ||
74549846 RS |
963 | /* Check that the file exists and is not a directory. */ |
964 | if (absolute) | |
965 | handler = Qnil; | |
966 | else | |
967 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
968 | if (! NILP (handler) && ! exec_only) | |
078e7b4a | 969 | { |
74549846 RS |
970 | Lisp_Object string; |
971 | int exists; | |
078e7b4a | 972 | |
74549846 RS |
973 | string = build_string (fn); |
974 | exists = ! NILP (exec_only ? Ffile_executable_p (string) | |
975 | : Ffile_readable_p (string)); | |
976 | if (exists | |
977 | && ! NILP (Ffile_directory_p (build_string (fn)))) | |
978 | exists = 0; | |
979 | ||
980 | if (exists) | |
078e7b4a JB |
981 | { |
982 | /* We succeeded; return this descriptor and filename. */ | |
983 | if (storeptr) | |
984 | *storeptr = build_string (fn); | |
5ef2a3c0 | 985 | UNGCPRO; |
74549846 RS |
986 | return 0; |
987 | } | |
988 | } | |
989 | else | |
990 | { | |
991 | int exists = (stat (fn, &st) >= 0 | |
992 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
993 | if (exists) | |
994 | { | |
995 | /* Check that we can access or open it. */ | |
996 | if (exec_only) | |
997 | fd = (access (fn, X_OK) == 0) ? 1 : -1; | |
998 | else | |
68c45bf0 | 999 | fd = emacs_open (fn, O_RDONLY, 0); |
74549846 RS |
1000 | |
1001 | if (fd >= 0) | |
1002 | { | |
1003 | /* We succeeded; return this descriptor and filename. */ | |
1004 | if (storeptr) | |
1005 | *storeptr = build_string (fn); | |
1006 | UNGCPRO; | |
1007 | return fd; | |
1008 | } | |
078e7b4a JB |
1009 | } |
1010 | } | |
1011 | ||
1012 | /* Advance to next suffix. */ | |
1013 | if (esuffix == 0) | |
1014 | break; | |
1015 | nsuffix += lsuffix + 1; | |
1016 | } | |
5a6e5452 | 1017 | if (absolute) |
5ef2a3c0 | 1018 | break; |
078e7b4a JB |
1019 | } |
1020 | ||
5ef2a3c0 KH |
1021 | UNGCPRO; |
1022 | return -1; | |
078e7b4a JB |
1023 | } |
1024 | ||
1025 | \f | |
ae321d28 RS |
1026 | /* Merge the list we've accumulated of globals from the current input source |
1027 | into the load_history variable. The details depend on whether | |
1028 | the source has an associated file name or not. */ | |
1029 | ||
1030 | static void | |
1031 | build_load_history (stream, source) | |
1032 | FILE *stream; | |
1033 | Lisp_Object source; | |
1034 | { | |
1035 | register Lisp_Object tail, prev, newelt; | |
1036 | register Lisp_Object tem, tem2; | |
1037 | register int foundit, loading; | |
1038 | ||
1039 | loading = stream || !NARROWED; | |
1040 | ||
1041 | tail = Vload_history; | |
1042 | prev = Qnil; | |
1043 | foundit = 0; | |
1044 | while (!NILP (tail)) | |
1045 | { | |
1046 | tem = Fcar (tail); | |
1047 | ||
1048 | /* Find the feature's previous assoc list... */ | |
1049 | if (!NILP (Fequal (source, Fcar (tem)))) | |
1050 | { | |
1051 | foundit = 1; | |
1052 | ||
1053 | /* If we're loading, remove it. */ | |
1054 | if (loading) | |
1055 | { | |
1056 | if (NILP (prev)) | |
1057 | Vload_history = Fcdr (tail); | |
1058 | else | |
1059 | Fsetcdr (prev, Fcdr (tail)); | |
1060 | } | |
1061 | ||
1062 | /* Otherwise, cons on new symbols that are not already members. */ | |
1063 | else | |
1064 | { | |
1065 | tem2 = Vcurrent_load_list; | |
1066 | ||
1067 | while (CONSP (tem2)) | |
1068 | { | |
1069 | newelt = Fcar (tem2); | |
1070 | ||
1071 | if (NILP (Fmemq (newelt, tem))) | |
1072 | Fsetcar (tail, Fcons (Fcar (tem), | |
1073 | Fcons (newelt, Fcdr (tem)))); | |
1074 | ||
1075 | tem2 = Fcdr (tem2); | |
1076 | QUIT; | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | else | |
1081 | prev = tail; | |
1082 | tail = Fcdr (tail); | |
1083 | QUIT; | |
1084 | } | |
1085 | ||
8a1f1537 RS |
1086 | /* If we're loading, cons the new assoc onto the front of load-history, |
1087 | the most-recently-loaded position. Also do this if we didn't find | |
1088 | an existing member for the current source. */ | |
1089 | if (loading || !foundit) | |
1090 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), | |
1091 | Vload_history); | |
ae321d28 RS |
1092 | } |
1093 | ||
078e7b4a | 1094 | Lisp_Object |
232ccf27 DL |
1095 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1096 | Lisp_Object junk; | |
078e7b4a JB |
1097 | { |
1098 | read_pure = 0; | |
1099 | return Qnil; | |
1100 | } | |
1101 | ||
94e554db RS |
1102 | static Lisp_Object |
1103 | readevalloop_1 (old) | |
1104 | Lisp_Object old; | |
1105 | { | |
1106 | load_convert_to_unibyte = ! NILP (old); | |
1107 | return Qnil; | |
1108 | } | |
1109 | ||
9c97398c GM |
1110 | /* Signal an `end-of-file' error, if possible with file name |
1111 | information. */ | |
1112 | ||
1113 | static void | |
1114 | end_of_file_error () | |
1115 | { | |
1116 | Lisp_Object data; | |
1117 | ||
1118 | if (STRINGP (Vload_file_name)) | |
1119 | data = Fcons (Vload_file_name, Qnil); | |
1120 | else | |
1121 | data = Qnil; | |
1122 | ||
1123 | Fsignal (Qend_of_file, data); | |
1124 | } | |
1125 | ||
94e554db | 1126 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af RS |
1127 | for this invocation. |
1128 | READFUN, if non-nil, is used instead of `read'. */ | |
94e554db | 1129 | |
078e7b4a | 1130 | static void |
976350af | 1131 | readevalloop (readcharfun, stream, sourcename, evalfun, printflag, unibyte, readfun) |
078e7b4a | 1132 | Lisp_Object readcharfun; |
ae321d28 RS |
1133 | FILE *stream; |
1134 | Lisp_Object sourcename; | |
078e7b4a JB |
1135 | Lisp_Object (*evalfun) (); |
1136 | int printflag; | |
976350af | 1137 | Lisp_Object unibyte, readfun; |
078e7b4a JB |
1138 | { |
1139 | register int c; | |
1140 | register Lisp_Object val; | |
1141 | int count = specpdl_ptr - specpdl; | |
8a1f1537 | 1142 | struct gcpro gcpro1; |
49cf7ff4 | 1143 | struct buffer *b = 0; |
f38952fe | 1144 | int continue_reading_p; |
49cf7ff4 RS |
1145 | |
1146 | if (BUFFERP (readcharfun)) | |
1147 | b = XBUFFER (readcharfun); | |
1148 | else if (MARKERP (readcharfun)) | |
1149 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a JB |
1150 | |
1151 | specbind (Qstandard_input, readcharfun); | |
8a1f1537 | 1152 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1153 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1154 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1155 | |
00a9a935 | 1156 | readchar_backlog = -1; |
6f7f43d5 | 1157 | |
8a1f1537 | 1158 | GCPRO1 (sourcename); |
ae321d28 | 1159 | |
ae321d28 RS |
1160 | LOADHIST_ATTACH (sourcename); |
1161 | ||
f38952fe GM |
1162 | continue_reading_p = 1; |
1163 | while (continue_reading_p) | |
078e7b4a | 1164 | { |
49cf7ff4 RS |
1165 | if (b != 0 && NILP (b->name)) |
1166 | error ("Reading from killed buffer"); | |
1167 | ||
078e7b4a JB |
1168 | instream = stream; |
1169 | c = READCHAR; | |
1170 | if (c == ';') | |
1171 | { | |
1172 | while ((c = READCHAR) != '\n' && c != -1); | |
1173 | continue; | |
1174 | } | |
1175 | if (c < 0) break; | |
6069d957 RS |
1176 | |
1177 | /* Ignore whitespace here, so we can detect eof. */ | |
1178 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
1179 | continue; | |
078e7b4a | 1180 | |
265a9e55 | 1181 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1182 | { |
0e326373 | 1183 | int count1 = specpdl_ptr - specpdl; |
078e7b4a JB |
1184 | record_unwind_protect (unreadpure, Qnil); |
1185 | val = read_list (-1, readcharfun); | |
0e326373 | 1186 | unbind_to (count1, Qnil); |
078e7b4a JB |
1187 | } |
1188 | else | |
1189 | { | |
1190 | UNREAD (c); | |
4ad679f9 | 1191 | read_objects = Qnil; |
f38952fe GM |
1192 | if (!NILP (readfun)) |
1193 | { | |
1194 | val = call1 (readfun, readcharfun); | |
1195 | ||
1196 | /* If READCHARFUN has set point to ZV, we should | |
1197 | stop reading, even if the form read sets point | |
1198 | to a different value when evaluated. */ | |
1199 | if (BUFFERP (readcharfun)) | |
1200 | { | |
1201 | struct buffer *b = XBUFFER (readcharfun); | |
1202 | if (BUF_PT (b) == BUF_ZV (b)) | |
1203 | continue_reading_p = 0; | |
1204 | } | |
1205 | } | |
976350af | 1206 | else if (! NILP (Vload_read_function)) |
84a15045 | 1207 | val = call1 (Vload_read_function, readcharfun); |
976350af RS |
1208 | else |
1209 | val = read0 (readcharfun); | |
078e7b4a JB |
1210 | } |
1211 | ||
1212 | val = (*evalfun) (val); | |
f38952fe | 1213 | |
078e7b4a JB |
1214 | if (printflag) |
1215 | { | |
1216 | Vvalues = Fcons (val, Vvalues); | |
1217 | if (EQ (Vstandard_output, Qt)) | |
1218 | Fprin1 (val, Qnil); | |
1219 | else | |
1220 | Fprint (val, Qnil); | |
1221 | } | |
1222 | } | |
1223 | ||
ae321d28 | 1224 | build_load_history (stream, sourcename); |
ae321d28 RS |
1225 | UNGCPRO; |
1226 | ||
078e7b4a JB |
1227 | unbind_to (count, Qnil); |
1228 | } | |
1229 | ||
1076254d | 1230 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
94b304d7 RS |
1231 | "Execute the current buffer as Lisp code.\n\ |
1232 | Programs can pass two arguments, BUFFER and PRINTFLAG.\n\ | |
1233 | BUFFER is the buffer to evaluate (nil means use current buffer).\n\ | |
1234 | PRINTFLAG controls printing of output:\n\ | |
228d4b1c JA |
1235 | nil means discard it; anything else is stream for print.\n\ |
1236 | \n\ | |
13febd85 RS |
1237 | If the optional third argument FILENAME is non-nil,\n\ |
1238 | it specifies the file name to use for `load-history'.\n\ | |
1076254d RS |
1239 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'\n\ |
1240 | for this invocation.\n\ | |
1241 | \n\ | |
1242 | The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that\n\ | |
1243 | `print' and related functions should work normally even if PRINTFLAG is nil.\n\ | |
13febd85 | 1244 | \n\ |
d331bcad | 1245 | This function preserves the position of point.") |
1076254d RS |
1246 | (buffer, printflag, filename, unibyte, do_allow_print) |
1247 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; | |
228d4b1c JA |
1248 | { |
1249 | int count = specpdl_ptr - specpdl; | |
1250 | Lisp_Object tem, buf; | |
1251 | ||
9391b698 | 1252 | if (NILP (buffer)) |
228d4b1c JA |
1253 | buf = Fcurrent_buffer (); |
1254 | else | |
9391b698 | 1255 | buf = Fget_buffer (buffer); |
dfdb645c | 1256 | if (NILP (buf)) |
13febd85 | 1257 | error ("No such buffer"); |
228d4b1c | 1258 | |
1076254d | 1259 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1260 | tem = Qsymbolp; |
1261 | else | |
1262 | tem = printflag; | |
13febd85 RS |
1263 | |
1264 | if (NILP (filename)) | |
1265 | filename = XBUFFER (buf)->filename; | |
1266 | ||
228d4b1c JA |
1267 | specbind (Qstandard_output, tem); |
1268 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1269 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
976350af | 1270 | readevalloop (buf, 0, filename, Feval, !NILP (printflag), unibyte, Qnil); |
cb09ab7a | 1271 | unbind_to (count, Qnil); |
228d4b1c JA |
1272 | |
1273 | return Qnil; | |
1274 | } | |
1275 | ||
1276 | #if 0 | |
c23edb78 | 1277 | XDEFUN ("eval-current-buffer", Feval_current_buffer, Seval_current_buffer, 0, 1, "", |
078e7b4a JB |
1278 | "Execute the current buffer as Lisp code.\n\ |
1279 | Programs can pass argument PRINTFLAG which controls printing of output:\n\ | |
1280 | nil means discard it; anything else is stream for print.\n\ | |
1281 | \n\ | |
1282 | If there is no error, point does not move. If there is an error,\n\ | |
1283 | point remains at the end of the last character read from the buffer.") | |
1284 | (printflag) | |
1285 | Lisp_Object printflag; | |
1286 | { | |
1287 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1288 | Lisp_Object tem, cbuf; |
1289 | ||
1290 | cbuf = Fcurrent_buffer () | |
078e7b4a | 1291 | |
265a9e55 | 1292 | if (NILP (printflag)) |
078e7b4a JB |
1293 | tem = Qsymbolp; |
1294 | else | |
1295 | tem = printflag; | |
1296 | specbind (Qstandard_output, tem); | |
1297 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1298 | SET_PT (BEGV); | |
94e554db | 1299 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1300 | !NILP (printflag), Qnil, Qnil); |
078e7b4a JB |
1301 | return unbind_to (count, Qnil); |
1302 | } | |
228d4b1c | 1303 | #endif |
078e7b4a | 1304 | |
976350af | 1305 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
078e7b4a JB |
1306 | "Execute the region as Lisp code.\n\ |
1307 | When called from programs, expects two arguments,\n\ | |
1308 | giving starting and ending indices in the current buffer\n\ | |
1309 | of the text to be executed.\n\ | |
1310 | Programs can pass third argument PRINTFLAG which controls output:\n\ | |
1311 | nil means discard it; anything else is stream for printing it.\n\ | |
976350af RS |
1312 | Also the fourth argument READ-FUNCTION, if non-nil, is used\n\ |
1313 | instead of `read' to read each expression. It gets one argument\n\ | |
1314 | which is the input stream for reading characters.\n\ | |
078e7b4a | 1315 | \n\ |
83f0c0c7 | 1316 | This function does not move point.") |
976350af RS |
1317 | (start, end, printflag, read_function) |
1318 | Lisp_Object start, end, printflag, read_function; | |
078e7b4a JB |
1319 | { |
1320 | int count = specpdl_ptr - specpdl; | |
ae321d28 RS |
1321 | Lisp_Object tem, cbuf; |
1322 | ||
1323 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1324 | |
265a9e55 | 1325 | if (NILP (printflag)) |
078e7b4a JB |
1326 | tem = Qsymbolp; |
1327 | else | |
1328 | tem = printflag; | |
1329 | specbind (Qstandard_output, tem); | |
1330 | ||
265a9e55 | 1331 | if (NILP (printflag)) |
078e7b4a JB |
1332 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
1333 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); | |
1334 | ||
9391b698 EN |
1335 | /* This both uses start and checks its type. */ |
1336 | Fgoto_char (start); | |
1337 | Fnarrow_to_region (make_number (BEGV), end); | |
94e554db | 1338 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
976350af | 1339 | !NILP (printflag), Qnil, read_function); |
078e7b4a JB |
1340 | |
1341 | return unbind_to (count, Qnil); | |
1342 | } | |
1343 | ||
078e7b4a JB |
1344 | \f |
1345 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
1346 | "Read one Lisp expression as text from STREAM, return as Lisp object.\n\ | |
1347 | If STREAM is nil, use the value of `standard-input' (which see).\n\ | |
1348 | STREAM or the value of `standard-input' may be:\n\ | |
1349 | a buffer (read from point and advance it)\n\ | |
1350 | a marker (read from where it points and advance it)\n\ | |
1351 | a function (call it with no arguments for each character,\n\ | |
1352 | call it with a char as argument to push a char back)\n\ | |
1353 | a string (takes text from string, starting at the beginning)\n\ | |
dcd46557 DL |
1354 | t (read text line using minibuffer and use it, or read from\n\ |
1355 | standard input in batch mode).") | |
5be02dff KH |
1356 | (stream) |
1357 | Lisp_Object stream; | |
078e7b4a JB |
1358 | { |
1359 | extern Lisp_Object Fread_minibuffer (); | |
1360 | ||
5be02dff KH |
1361 | if (NILP (stream)) |
1362 | stream = Vstandard_input; | |
1363 | if (EQ (stream, Qt)) | |
1364 | stream = Qread_char; | |
078e7b4a | 1365 | |
00a9a935 | 1366 | readchar_backlog = -1; |
17634846 | 1367 | new_backquote_flag = 0; |
4ad679f9 | 1368 | read_objects = Qnil; |
17634846 | 1369 | |
5be02dff | 1370 | if (EQ (stream, Qread_char)) |
078e7b4a | 1371 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1372 | |
5be02dff KH |
1373 | if (STRINGP (stream)) |
1374 | return Fcar (Fread_from_string (stream, Qnil, Qnil)); | |
078e7b4a | 1375 | |
5be02dff | 1376 | return read0 (stream); |
078e7b4a JB |
1377 | } |
1378 | ||
1379 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
1380 | "Read one Lisp expression which is represented as text by STRING.\n\ | |
1381 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\ | |
1382 | START and END optionally delimit a substring of STRING from which to read;\n\ | |
1383 | they default to 0 and (length STRING) respectively.") | |
1384 | (string, start, end) | |
1385 | Lisp_Object string, start, end; | |
1386 | { | |
1387 | int startval, endval; | |
1388 | Lisp_Object tem; | |
1389 | ||
1390 | CHECK_STRING (string,0); | |
1391 | ||
265a9e55 | 1392 | if (NILP (end)) |
bed23cb2 | 1393 | endval = XSTRING (string)->size; |
078e7b4a | 1394 | else |
e28552a4 RS |
1395 | { |
1396 | CHECK_NUMBER (end, 2); | |
8028e0ed | 1397 | endval = XINT (end); |
bed23cb2 | 1398 | if (endval < 0 || endval > XSTRING (string)->size) |
078e7b4a JB |
1399 | args_out_of_range (string, end); |
1400 | } | |
1401 | ||
265a9e55 | 1402 | if (NILP (start)) |
078e7b4a JB |
1403 | startval = 0; |
1404 | else | |
e28552a4 RS |
1405 | { |
1406 | CHECK_NUMBER (start, 1); | |
8028e0ed | 1407 | startval = XINT (start); |
078e7b4a JB |
1408 | if (startval < 0 || startval > endval) |
1409 | args_out_of_range (string, start); | |
1410 | } | |
1411 | ||
1412 | read_from_string_index = startval; | |
bed23cb2 | 1413 | read_from_string_index_byte = string_char_to_byte (string, startval); |
078e7b4a JB |
1414 | read_from_string_limit = endval; |
1415 | ||
17634846 | 1416 | new_backquote_flag = 0; |
4ad679f9 | 1417 | read_objects = Qnil; |
17634846 | 1418 | |
078e7b4a | 1419 | tem = read0 (string); |
bed23cb2 | 1420 | return Fcons (tem, make_number (read_from_string_index)); |
078e7b4a JB |
1421 | } |
1422 | \f | |
6428369f KH |
1423 | /* Use this for recursive reads, in contexts where internal tokens |
1424 | are not allowed. */ | |
e28552a4 | 1425 | |
078e7b4a JB |
1426 | static Lisp_Object |
1427 | read0 (readcharfun) | |
1428 | Lisp_Object readcharfun; | |
1429 | { | |
1430 | register Lisp_Object val; | |
e28552a4 | 1431 | int c; |
078e7b4a | 1432 | |
17634846 | 1433 | val = read1 (readcharfun, &c, 0); |
6428369f | 1434 | if (c) |
93d75e4c RS |
1435 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1436 | make_number (c)), | |
e28552a4 | 1437 | Qnil)); |
078e7b4a JB |
1438 | |
1439 | return val; | |
1440 | } | |
1441 | \f | |
1442 | static int read_buffer_size; | |
1443 | static char *read_buffer; | |
1444 | ||
fe0e03f3 KH |
1445 | /* Read multibyte form and return it as a character. C is a first |
1446 | byte of multibyte form, and rest of them are read from | |
1447 | READCHARFUN. */ | |
6f7f43d5 | 1448 | |
fe0e03f3 KH |
1449 | static int |
1450 | read_multibyte (c, readcharfun) | |
1451 | register int c; | |
1452 | Lisp_Object readcharfun; | |
1453 | { | |
1454 | /* We need the actual character code of this multibyte | |
1455 | characters. */ | |
449fea39 | 1456 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 KH |
1457 | int len = 0; |
1458 | ||
1459 | str[len++] = c; | |
1460 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1461 | && len < MAX_MULTIBYTE_LENGTH) |
fe0e03f3 KH |
1462 | str[len++] = c; |
1463 | UNREAD (c); | |
1464 | return STRING_CHAR (str, len); | |
1465 | } | |
1466 | ||
6f7f43d5 RS |
1467 | /* Read a \-escape sequence, assuming we already read the `\'. */ |
1468 | ||
078e7b4a | 1469 | static int |
e7fc914b | 1470 | read_escape (readcharfun, stringp) |
078e7b4a | 1471 | Lisp_Object readcharfun; |
e7fc914b | 1472 | int stringp; |
078e7b4a JB |
1473 | { |
1474 | register int c = READCHAR; | |
1475 | switch (c) | |
1476 | { | |
f3849f25 RS |
1477 | case -1: |
1478 | error ("End of file"); | |
1479 | ||
078e7b4a | 1480 | case 'a': |
265a9e55 | 1481 | return '\007'; |
078e7b4a JB |
1482 | case 'b': |
1483 | return '\b'; | |
f405a585 RS |
1484 | case 'd': |
1485 | return 0177; | |
078e7b4a JB |
1486 | case 'e': |
1487 | return 033; | |
1488 | case 'f': | |
1489 | return '\f'; | |
1490 | case 'n': | |
1491 | return '\n'; | |
1492 | case 'r': | |
1493 | return '\r'; | |
1494 | case 't': | |
1495 | return '\t'; | |
1496 | case 'v': | |
1497 | return '\v'; | |
1498 | case '\n': | |
1499 | return -1; | |
e28552a4 | 1500 | case ' ': |
e7fc914b KH |
1501 | if (stringp) |
1502 | return -1; | |
1503 | return ' '; | |
078e7b4a JB |
1504 | |
1505 | case 'M': | |
1506 | c = READCHAR; | |
1507 | if (c != '-') | |
1508 | error ("Invalid escape character syntax"); | |
1509 | c = READCHAR; | |
1510 | if (c == '\\') | |
e7fc914b | 1511 | c = read_escape (readcharfun, 0); |
7bd279cd | 1512 | return c | meta_modifier; |
f405a585 RS |
1513 | |
1514 | case 'S': | |
1515 | c = READCHAR; | |
1516 | if (c != '-') | |
1517 | error ("Invalid escape character syntax"); | |
1518 | c = READCHAR; | |
1519 | if (c == '\\') | |
e7fc914b | 1520 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1521 | return c | shift_modifier; |
1522 | ||
1523 | case 'H': | |
1524 | c = READCHAR; | |
1525 | if (c != '-') | |
1526 | error ("Invalid escape character syntax"); | |
1527 | c = READCHAR; | |
1528 | if (c == '\\') | |
e7fc914b | 1529 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1530 | return c | hyper_modifier; |
1531 | ||
1532 | case 'A': | |
1533 | c = READCHAR; | |
1534 | if (c != '-') | |
1535 | error ("Invalid escape character syntax"); | |
1536 | c = READCHAR; | |
1537 | if (c == '\\') | |
e7fc914b | 1538 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
1539 | return c | alt_modifier; |
1540 | ||
1541 | case 's': | |
1542 | c = READCHAR; | |
1543 | if (c != '-') | |
1544 | error ("Invalid escape character syntax"); | |
1545 | c = READCHAR; | |
1546 | if (c == '\\') | |
e7fc914b | 1547 | c = read_escape (readcharfun, 0); |
7bd279cd | 1548 | return c | super_modifier; |
078e7b4a JB |
1549 | |
1550 | case 'C': | |
1551 | c = READCHAR; | |
1552 | if (c != '-') | |
1553 | error ("Invalid escape character syntax"); | |
1554 | case '^': | |
1555 | c = READCHAR; | |
1556 | if (c == '\\') | |
e7fc914b | 1557 | c = read_escape (readcharfun, 0); |
164d590d KH |
1558 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1559 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1560 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1561 | return c | ctrl_modifier; | |
f405a585 RS |
1562 | /* ASCII control chars are made from letters (both cases), |
1563 | as well as the non-letters within 0100...0137. */ | |
1564 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1565 | return (c & (037 | ~0177)); | |
1566 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1567 | return (c & (037 | ~0177)); | |
078e7b4a | 1568 | else |
7bd279cd | 1569 | return c | ctrl_modifier; |
078e7b4a JB |
1570 | |
1571 | case '0': | |
1572 | case '1': | |
1573 | case '2': | |
1574 | case '3': | |
1575 | case '4': | |
1576 | case '5': | |
1577 | case '6': | |
1578 | case '7': | |
1579 | /* An octal escape, as in ANSI C. */ | |
1580 | { | |
1581 | register int i = c - '0'; | |
1582 | register int count = 0; | |
1583 | while (++count < 3) | |
1584 | { | |
1585 | if ((c = READCHAR) >= '0' && c <= '7') | |
1586 | { | |
1587 | i *= 8; | |
1588 | i += c - '0'; | |
1589 | } | |
1590 | else | |
1591 | { | |
1592 | UNREAD (c); | |
1593 | break; | |
1594 | } | |
1595 | } | |
1596 | return i; | |
1597 | } | |
1598 | ||
1599 | case 'x': | |
1600 | /* A hex escape, as in ANSI C. */ | |
1601 | { | |
1602 | int i = 0; | |
1603 | while (1) | |
1604 | { | |
1605 | c = READCHAR; | |
1606 | if (c >= '0' && c <= '9') | |
1607 | { | |
1608 | i *= 16; | |
1609 | i += c - '0'; | |
1610 | } | |
1611 | else if ((c >= 'a' && c <= 'f') | |
1612 | || (c >= 'A' && c <= 'F')) | |
1613 | { | |
1614 | i *= 16; | |
1615 | if (c >= 'a' && c <= 'f') | |
1616 | i += c - 'a' + 10; | |
1617 | else | |
1618 | i += c - 'A' + 10; | |
1619 | } | |
1620 | else | |
1621 | { | |
1622 | UNREAD (c); | |
1623 | break; | |
1624 | } | |
1625 | } | |
1626 | return i; | |
1627 | } | |
1628 | ||
1629 | default: | |
fe0e03f3 KH |
1630 | if (BASE_LEADING_CODE_P (c)) |
1631 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1632 | return c; |
1633 | } | |
1634 | } | |
1635 | ||
bf5d1a17 GM |
1636 | |
1637 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1638 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1639 | read error is signaled . Value is the integer read. Signals an | |
1640 | error if encountering invalid read syntax or if RADIX is out of | |
1641 | range. */ | |
1642 | ||
1643 | static Lisp_Object | |
1644 | read_integer (readcharfun, radix) | |
1645 | Lisp_Object readcharfun; | |
1646 | int radix; | |
1647 | { | |
1648 | int number, ndigits, invalid_p, c, sign; | |
1649 | ||
1650 | if (radix < 2 || radix > 36) | |
1651 | invalid_p = 1; | |
1652 | else | |
1653 | { | |
1654 | number = ndigits = invalid_p = 0; | |
1655 | sign = 1; | |
1656 | ||
1657 | c = READCHAR; | |
1658 | if (c == '-') | |
1659 | { | |
1660 | c = READCHAR; | |
1661 | sign = -1; | |
1662 | } | |
1663 | else if (c == '+') | |
1664 | c = READCHAR; | |
1665 | ||
1666 | while (c >= 0) | |
1667 | { | |
1668 | int digit; | |
1669 | ||
1670 | if (c >= '0' && c <= '9') | |
1671 | digit = c - '0'; | |
1672 | else if (c >= 'a' && c <= 'z') | |
1673 | digit = c - 'a' + 10; | |
1674 | else if (c >= 'A' && c <= 'Z') | |
1675 | digit = c - 'A' + 10; | |
1676 | else | |
b632fa48 GM |
1677 | { |
1678 | UNREAD (c); | |
1679 | break; | |
1680 | } | |
bf5d1a17 GM |
1681 | |
1682 | if (digit < 0 || digit >= radix) | |
1683 | invalid_p = 1; | |
1684 | ||
1685 | number = radix * number + digit; | |
1686 | ++ndigits; | |
1687 | c = READCHAR; | |
1688 | } | |
1689 | } | |
1690 | ||
1691 | if (ndigits == 0 || invalid_p) | |
1692 | { | |
1693 | char buf[50]; | |
1694 | sprintf (buf, "integer, radix %d", radix); | |
1695 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
1696 | } | |
1697 | ||
1698 | return make_number (sign * number); | |
1699 | } | |
1700 | ||
1701 | ||
6428369f KH |
1702 | /* If the next token is ')' or ']' or '.', we store that character |
1703 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1704 | zero in *PCH and we read and return one lisp object. |
1705 | ||
1706 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1707 | ||
078e7b4a | 1708 | static Lisp_Object |
17634846 | 1709 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1710 | register Lisp_Object readcharfun; |
e28552a4 | 1711 | int *pch; |
17634846 | 1712 | int first_in_list; |
078e7b4a JB |
1713 | { |
1714 | register int c; | |
4ad679f9 EN |
1715 | int uninterned_symbol = 0; |
1716 | ||
6428369f | 1717 | *pch = 0; |
078e7b4a JB |
1718 | |
1719 | retry: | |
1720 | ||
1721 | c = READCHAR; | |
9c97398c GM |
1722 | if (c < 0) |
1723 | end_of_file_error (); | |
078e7b4a JB |
1724 | |
1725 | switch (c) | |
1726 | { | |
1727 | case '(': | |
1728 | return read_list (0, readcharfun); | |
1729 | ||
1730 | case '[': | |
c15cfd1f | 1731 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1732 | |
1733 | case ')': | |
1734 | case ']': | |
078e7b4a | 1735 | { |
6428369f KH |
1736 | *pch = c; |
1737 | return Qnil; | |
078e7b4a JB |
1738 | } |
1739 | ||
1740 | case '#': | |
200f684e | 1741 | c = READCHAR; |
c2390933 RS |
1742 | if (c == '^') |
1743 | { | |
1744 | c = READCHAR; | |
1745 | if (c == '[') | |
1746 | { | |
1747 | Lisp_Object tmp; | |
c15cfd1f | 1748 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
1749 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
1750 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
1751 | error ("Invalid size char-table"); | |
1752 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 1753 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
1754 | return tmp; |
1755 | } | |
3701b5de KH |
1756 | else if (c == '^') |
1757 | { | |
1758 | c = READCHAR; | |
1759 | if (c == '[') | |
1760 | { | |
1761 | Lisp_Object tmp; | |
c15cfd1f | 1762 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
1763 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
1764 | error ("Invalid size char-table"); | |
1765 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
1766 | XCHAR_TABLE (tmp)->top = Qnil; | |
1767 | return tmp; | |
1768 | } | |
1769 | Fsignal (Qinvalid_read_syntax, | |
1770 | Fcons (make_string ("#^^", 3), Qnil)); | |
1771 | } | |
c2390933 RS |
1772 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
1773 | } | |
1774 | if (c == '&') | |
1775 | { | |
1776 | Lisp_Object length; | |
1777 | length = read1 (readcharfun, pch, first_in_list); | |
1778 | c = READCHAR; | |
1779 | if (c == '"') | |
1780 | { | |
1781 | Lisp_Object tmp, val; | |
90ed3ec5 | 1782 | int size_in_chars = ((XFASTINT (length) + BITS_PER_CHAR - 1) |
68be917d | 1783 | / BITS_PER_CHAR); |
c2390933 RS |
1784 | |
1785 | UNREAD (c); | |
1786 | tmp = read1 (readcharfun, pch, first_in_list); | |
90ed3ec5 RS |
1787 | if (size_in_chars != XSTRING (tmp)->size |
1788 | /* We used to print 1 char too many | |
1789 | when the number of bits was a multiple of 8. | |
1790 | Accept such input in case it came from an old version. */ | |
1791 | && ! (XFASTINT (length) | |
1792 | == (XSTRING (tmp)->size - 1) * BITS_PER_CHAR)) | |
c2390933 | 1793 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 1794 | Fcons (make_string ("#&...", 5), Qnil)); |
c2390933 RS |
1795 | |
1796 | val = Fmake_bool_vector (length, Qnil); | |
1797 | bcopy (XSTRING (tmp)->data, XBOOL_VECTOR (val)->data, | |
1798 | size_in_chars); | |
67d3b149 EZ |
1799 | /* Clear the extraneous bits in the last byte. */ |
1800 | if (XINT (length) != size_in_chars * BITS_PER_CHAR) | |
1801 | XBOOL_VECTOR (val)->data[size_in_chars - 1] | |
1802 | &= (1 << (XINT (length) % BITS_PER_CHAR)) - 1; | |
c2390933 RS |
1803 | return val; |
1804 | } | |
ec3bbd7d | 1805 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 1806 | Qnil)); |
c2390933 | 1807 | } |
200f684e RS |
1808 | if (c == '[') |
1809 | { | |
1810 | /* Accept compiled functions at read-time so that we don't have to | |
1811 | build them using function calls. */ | |
748ef62f | 1812 | Lisp_Object tmp; |
c15cfd1f | 1813 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
1814 | return Fmake_byte_code (XVECTOR (tmp)->size, |
1815 | XVECTOR (tmp)->contents); | |
200f684e | 1816 | } |
748ef62f RS |
1817 | if (c == '(') |
1818 | { | |
1819 | Lisp_Object tmp; | |
1820 | struct gcpro gcpro1; | |
e28552a4 | 1821 | int ch; |
748ef62f RS |
1822 | |
1823 | /* Read the string itself. */ | |
17634846 | 1824 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 1825 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
1826 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
1827 | GCPRO1 (tmp); | |
1828 | /* Read the intervals and their properties. */ | |
1829 | while (1) | |
1830 | { | |
1831 | Lisp_Object beg, end, plist; | |
1832 | ||
17634846 | 1833 | beg = read1 (readcharfun, &ch, 0); |
6428369f KH |
1834 | if (ch == ')') |
1835 | break; | |
1836 | if (ch == 0) | |
17634846 | 1837 | end = read1 (readcharfun, &ch, 0); |
6428369f | 1838 | if (ch == 0) |
17634846 | 1839 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 1840 | if (ch) |
748ef62f | 1841 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
1842 | Fcons (build_string ("invalid string property list"), |
1843 | Qnil)); | |
748ef62f RS |
1844 | Fset_text_properties (beg, end, plist, tmp); |
1845 | } | |
1846 | UNGCPRO; | |
1847 | return tmp; | |
1848 | } | |
339ee979 | 1849 | |
20ea2964 RS |
1850 | /* #@NUMBER is used to skip NUMBER following characters. |
1851 | That's used in .elc files to skip over doc strings | |
1852 | and function definitions. */ | |
1853 | if (c == '@') | |
1854 | { | |
1855 | int i, nskip = 0; | |
1856 | ||
1857 | /* Read a decimal integer. */ | |
1858 | while ((c = READCHAR) >= 0 | |
1859 | && c >= '0' && c <= '9') | |
1860 | { | |
1861 | nskip *= 10; | |
1862 | nskip += c - '0'; | |
1863 | } | |
1864 | if (c >= 0) | |
1865 | UNREAD (c); | |
1866 | ||
b2a30870 RS |
1867 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
1868 | { | |
1869 | /* If we are supposed to force doc strings into core right now, | |
1870 | record the last string that we skipped, | |
1871 | and record where in the file it comes from. */ | |
c15cfd1f RS |
1872 | |
1873 | /* But first exchange saved_doc_string | |
1874 | with prev_saved_doc_string, so we save two strings. */ | |
1875 | { | |
1876 | char *temp = saved_doc_string; | |
1877 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 1878 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
1879 | int temp_len = saved_doc_string_length; |
1880 | ||
1881 | saved_doc_string = prev_saved_doc_string; | |
1882 | saved_doc_string_size = prev_saved_doc_string_size; | |
1883 | saved_doc_string_position = prev_saved_doc_string_position; | |
1884 | saved_doc_string_length = prev_saved_doc_string_length; | |
1885 | ||
1886 | prev_saved_doc_string = temp; | |
1887 | prev_saved_doc_string_size = temp_size; | |
1888 | prev_saved_doc_string_position = temp_pos; | |
1889 | prev_saved_doc_string_length = temp_len; | |
1890 | } | |
1891 | ||
b2a30870 RS |
1892 | if (saved_doc_string_size == 0) |
1893 | { | |
1894 | saved_doc_string_size = nskip + 100; | |
11938f10 | 1895 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
1896 | } |
1897 | if (nskip > saved_doc_string_size) | |
1898 | { | |
1899 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
1900 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
1901 | saved_doc_string_size); | |
b2a30870 RS |
1902 | } |
1903 | ||
68c45bf0 | 1904 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
1905 | |
1906 | /* Copy that many characters into saved_doc_string. */ | |
1907 | for (i = 0; i < nskip && c >= 0; i++) | |
1908 | saved_doc_string[i] = c = READCHAR; | |
1909 | ||
1910 | saved_doc_string_length = i; | |
1911 | } | |
1912 | else | |
b2a30870 RS |
1913 | { |
1914 | /* Skip that many characters. */ | |
1915 | for (i = 0; i < nskip && c >= 0; i++) | |
1916 | c = READCHAR; | |
1917 | } | |
d49f0c1a | 1918 | |
20ea2964 RS |
1919 | goto retry; |
1920 | } | |
1921 | if (c == '$') | |
1922 | return Vload_file_name; | |
2b6cae0c RS |
1923 | if (c == '\'') |
1924 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
1925 | /* #:foo is the uninterned symbol named foo. */ |
1926 | if (c == ':') | |
1927 | { | |
1928 | uninterned_symbol = 1; | |
1929 | c = READCHAR; | |
1930 | goto default_label; | |
1931 | } | |
1932 | /* Reader forms that can reuse previously read objects. */ | |
1933 | if (c >= '0' && c <= '9') | |
1934 | { | |
1935 | int n = 0; | |
1936 | Lisp_Object tem; | |
2b6cae0c | 1937 | |
4ad679f9 EN |
1938 | /* Read a non-negative integer. */ |
1939 | while (c >= '0' && c <= '9') | |
1940 | { | |
1941 | n *= 10; | |
1942 | n += c - '0'; | |
1943 | c = READCHAR; | |
1944 | } | |
1945 | /* #n=object returns object, but associates it with n for #n#. */ | |
1946 | if (c == '=') | |
1947 | { | |
9e062b6c RS |
1948 | /* Make a placeholder for #n# to use temporarily */ |
1949 | Lisp_Object placeholder; | |
1950 | Lisp_Object cell; | |
1951 | ||
1952 | placeholder = Fcons(Qnil, Qnil); | |
1953 | cell = Fcons (make_number (n), placeholder); | |
1954 | read_objects = Fcons (cell, read_objects); | |
1955 | ||
1956 | /* Read the object itself. */ | |
4ad679f9 | 1957 | tem = read0 (readcharfun); |
9e062b6c RS |
1958 | |
1959 | /* Now put it everywhere the placeholder was... */ | |
1960 | substitute_object_in_subtree (tem, placeholder); | |
1961 | ||
1962 | /* ...and #n# will use the real value from now on. */ | |
1963 | Fsetcdr (cell, tem); | |
1964 | ||
4ad679f9 EN |
1965 | return tem; |
1966 | } | |
1967 | /* #n# returns a previously read object. */ | |
1968 | if (c == '#') | |
1969 | { | |
1970 | tem = Fassq (make_number (n), read_objects); | |
1971 | if (CONSP (tem)) | |
1972 | return XCDR (tem); | |
1973 | /* Fall through to error message. */ | |
1974 | } | |
bf5d1a17 GM |
1975 | else if (c == 'r' || c == 'R') |
1976 | return read_integer (readcharfun, n); | |
1977 | ||
4ad679f9 EN |
1978 | /* Fall through to error message. */ |
1979 | } | |
bf5d1a17 GM |
1980 | else if (c == 'x' || c == 'X') |
1981 | return read_integer (readcharfun, 16); | |
1982 | else if (c == 'o' || c == 'O') | |
1983 | return read_integer (readcharfun, 8); | |
1984 | else if (c == 'b' || c == 'B') | |
1985 | return read_integer (readcharfun, 2); | |
20ea2964 | 1986 | |
200f684e | 1987 | UNREAD (c); |
748ef62f | 1988 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
1989 | |
1990 | case ';': | |
1991 | while ((c = READCHAR) >= 0 && c != '\n'); | |
1992 | goto retry; | |
1993 | ||
1994 | case '\'': | |
1995 | { | |
1996 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
1997 | } | |
1998 | ||
17634846 RS |
1999 | case '`': |
2000 | if (first_in_list) | |
2001 | goto default_label; | |
2002 | else | |
2003 | { | |
2004 | Lisp_Object value; | |
2005 | ||
2006 | new_backquote_flag = 1; | |
2007 | value = read0 (readcharfun); | |
2008 | new_backquote_flag = 0; | |
2009 | ||
2010 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2011 | } | |
2012 | ||
2013 | case ',': | |
2014 | if (new_backquote_flag) | |
2015 | { | |
2016 | Lisp_Object comma_type = Qnil; | |
2017 | Lisp_Object value; | |
2018 | int ch = READCHAR; | |
2019 | ||
2020 | if (ch == '@') | |
2021 | comma_type = Qcomma_at; | |
2022 | else if (ch == '.') | |
2023 | comma_type = Qcomma_dot; | |
2024 | else | |
2025 | { | |
2026 | if (ch >= 0) UNREAD (ch); | |
2027 | comma_type = Qcomma; | |
2028 | } | |
2029 | ||
2030 | new_backquote_flag = 0; | |
2031 | value = read0 (readcharfun); | |
2032 | new_backquote_flag = 1; | |
2033 | return Fcons (comma_type, Fcons (value, Qnil)); | |
2034 | } | |
2035 | else | |
2036 | goto default_label; | |
2037 | ||
078e7b4a JB |
2038 | case '?': |
2039 | { | |
078e7b4a | 2040 | c = READCHAR; |
9c97398c GM |
2041 | if (c < 0) |
2042 | end_of_file_error (); | |
078e7b4a JB |
2043 | |
2044 | if (c == '\\') | |
e7fc914b | 2045 | c = read_escape (readcharfun, 0); |
fe0e03f3 KH |
2046 | else if (BASE_LEADING_CODE_P (c)) |
2047 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2048 | |
6f7f43d5 | 2049 | return make_number (c); |
078e7b4a JB |
2050 | } |
2051 | ||
00a9a935 | 2052 | case '"': |
078e7b4a JB |
2053 | { |
2054 | register char *p = read_buffer; | |
2055 | register char *end = read_buffer + read_buffer_size; | |
2056 | register int c; | |
e7fc914b KH |
2057 | /* Nonzero if we saw an escape sequence specifying |
2058 | a multibyte character. */ | |
2059 | int force_multibyte = 0; | |
2060 | /* Nonzero if we saw an escape sequence specifying | |
2061 | a single-byte character. */ | |
2062 | int force_singlebyte = 0; | |
078e7b4a | 2063 | int cancel = 0; |
e7fc914b | 2064 | int nchars; |
078e7b4a JB |
2065 | |
2066 | while ((c = READCHAR) >= 0 | |
2067 | && c != '\"') | |
2068 | { | |
449fea39 | 2069 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a JB |
2070 | { |
2071 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2072 | p += new - read_buffer; | |
2073 | read_buffer += new - read_buffer; | |
2074 | end = read_buffer + read_buffer_size; | |
2075 | } | |
bed23cb2 | 2076 | |
078e7b4a | 2077 | if (c == '\\') |
03e88613 | 2078 | { |
e7fc914b | 2079 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2080 | |
2081 | /* C is -1 if \ newline has just been seen */ | |
2082 | if (c == -1) | |
03e88613 | 2083 | { |
bed23cb2 RS |
2084 | if (p == read_buffer) |
2085 | cancel = 1; | |
03e88613 RS |
2086 | continue; |
2087 | } | |
bed23cb2 | 2088 | |
94e554db RS |
2089 | /* If an escape specifies a non-ASCII single-byte character, |
2090 | this must be a unibyte string. */ | |
164d590d KH |
2091 | if (SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK)) |
2092 | && ! ASCII_BYTE_P ((c & ~CHAR_MODIFIER_MASK))) | |
e7fc914b | 2093 | force_singlebyte = 1; |
03e88613 | 2094 | } |
6f7f43d5 | 2095 | |
164d590d | 2096 | if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) |
078e7b4a | 2097 | { |
164d590d KH |
2098 | /* Any modifiers for a multibyte character are invalid. */ |
2099 | if (c & CHAR_MODIFIER_MASK) | |
2100 | error ("Invalid modifier in string"); | |
449fea39 KH |
2101 | p += CHAR_STRING (c, p); |
2102 | force_multibyte = 1; | |
078e7b4a JB |
2103 | } |
2104 | else | |
f943104a | 2105 | { |
988c2f83 RS |
2106 | /* Allow `\C- ' and `\C-?'. */ |
2107 | if (c == (CHAR_CTL | ' ')) | |
2108 | c = 0; | |
2109 | else if (c == (CHAR_CTL | '?')) | |
2110 | c = 127; | |
2111 | ||
164d590d KH |
2112 | if (c & CHAR_SHIFT) |
2113 | { | |
2114 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2115 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2116 | c &= ~CHAR_SHIFT; | |
2117 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2118 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
2119 | } | |
2120 | ||
f943104a KH |
2121 | if (c & CHAR_META) |
2122 | /* Move the meta bit to the right place for a string. */ | |
2123 | c = (c & ~CHAR_META) | 0x80; | |
2124 | if (c & ~0xff) | |
2125 | error ("Invalid modifier in string"); | |
2126 | *p++ = c; | |
2127 | } | |
078e7b4a | 2128 | } |
6f7f43d5 | 2129 | if (c < 0) |
9c97398c | 2130 | end_of_file_error (); |
078e7b4a JB |
2131 | |
2132 | /* If purifying, and string starts with \ newline, | |
2133 | return zero instead. This is for doc strings | |
08564963 | 2134 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2135 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2136 | return make_number (0); |
2137 | ||
6f46329a | 2138 | if (force_multibyte) |
f0354c03 KH |
2139 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, |
2140 | p - read_buffer, &nchars); | |
6f46329a RS |
2141 | else if (force_singlebyte) |
2142 | nchars = p - read_buffer; | |
94e554db RS |
2143 | else if (load_convert_to_unibyte) |
2144 | { | |
2145 | Lisp_Object string; | |
f0354c03 KH |
2146 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, |
2147 | p - read_buffer, &nchars); | |
94e554db RS |
2148 | if (p - read_buffer != nchars) |
2149 | { | |
2150 | string = make_multibyte_string (read_buffer, nchars, | |
2151 | p - read_buffer); | |
2152 | return Fstring_make_unibyte (string); | |
2153 | } | |
2154 | } | |
8db9dc66 RS |
2155 | else if (EQ (readcharfun, Qget_file_char) |
2156 | || EQ (readcharfun, Qlambda)) | |
f0354c03 KH |
2157 | /* Nowadays, reading directly from a file is used only for |
2158 | compiled Emacs Lisp files, and those always use the | |
2159 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2160 | for reading dynamic byte code (compiled with | |
2161 | byte-compile-dynamic = t). */ | |
2162 | p = read_buffer + str_as_multibyte (read_buffer, end - read_buffer, | |
2163 | p - read_buffer, &nchars); | |
e28552a4 | 2164 | else |
bed23cb2 RS |
2165 | /* In all other cases, if we read these bytes as |
2166 | separate characters, treat them as separate characters now. */ | |
e7fc914b KH |
2167 | nchars = p - read_buffer; |
2168 | ||
2169 | if (read_pure) | |
491f16a2 RS |
2170 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
2171 | (force_multibyte | |
2172 | || (p - read_buffer != nchars))); | |
2173 | return make_specified_string (read_buffer, nchars, p - read_buffer, | |
2174 | (force_multibyte | |
2175 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2176 | } |
2177 | ||
109d300c JB |
2178 | case '.': |
2179 | { | |
109d300c JB |
2180 | int next_char = READCHAR; |
2181 | UNREAD (next_char); | |
2182 | ||
035eec48 GM |
2183 | if (next_char <= 040 |
2184 | || index ("\"'`,(", next_char)) | |
109d300c | 2185 | { |
6428369f KH |
2186 | *pch = c; |
2187 | return Qnil; | |
109d300c JB |
2188 | } |
2189 | ||
2190 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2191 | below will now loop at least once, assuring that we will not | |
2192 | try to UNREAD two characters in a row. */ | |
2193 | } | |
078e7b4a | 2194 | default: |
17634846 | 2195 | default_label: |
078e7b4a JB |
2196 | if (c <= 040) goto retry; |
2197 | { | |
2198 | register char *p = read_buffer; | |
481c6336 | 2199 | int quoted = 0; |
078e7b4a JB |
2200 | |
2201 | { | |
2202 | register char *end = read_buffer + read_buffer_size; | |
2203 | ||
6f7f43d5 RS |
2204 | while (c > 040 |
2205 | && !(c == '\"' || c == '\'' || c == ';' || c == '?' | |
2206 | || c == '(' || c == ')' | |
6f7f43d5 RS |
2207 | || c == '[' || c == ']' || c == '#' |
2208 | )) | |
078e7b4a | 2209 | { |
449fea39 | 2210 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a JB |
2211 | { |
2212 | register char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2213 | p += new - read_buffer; | |
2214 | read_buffer += new - read_buffer; | |
2215 | end = read_buffer + read_buffer_size; | |
2216 | } | |
2217 | if (c == '\\') | |
481c6336 RS |
2218 | { |
2219 | c = READCHAR; | |
2220 | quoted = 1; | |
2221 | } | |
6f7f43d5 | 2222 | |
bed23cb2 | 2223 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2224 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2225 | else |
2226 | *p++ = c; | |
6f7f43d5 | 2227 | |
078e7b4a JB |
2228 | c = READCHAR; |
2229 | } | |
2230 | ||
2231 | if (p == end) | |
2232 | { | |
2233 | char *new = (char *) xrealloc (read_buffer, read_buffer_size *= 2); | |
2234 | p += new - read_buffer; | |
2235 | read_buffer += new - read_buffer; | |
2236 | /* end = read_buffer + read_buffer_size; */ | |
2237 | } | |
2238 | *p = 0; | |
2239 | if (c >= 0) | |
2240 | UNREAD (c); | |
2241 | } | |
2242 | ||
4ad679f9 | 2243 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2244 | { |
2245 | register char *p1; | |
2246 | register Lisp_Object val; | |
2247 | p1 = read_buffer; | |
2248 | if (*p1 == '+' || *p1 == '-') p1++; | |
2249 | /* Is it an integer? */ | |
2250 | if (p1 != p) | |
2251 | { | |
2252 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2253 | /* Integers can have trailing decimal points. */ |
2254 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2255 | if (p1 == p) |
2256 | /* It is an integer. */ | |
2257 | { | |
481c6336 RS |
2258 | if (p1[-1] == '.') |
2259 | p1[-1] = '\0'; | |
faca07fb RS |
2260 | if (sizeof (int) == sizeof (EMACS_INT)) |
2261 | XSETINT (val, atoi (read_buffer)); | |
2262 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2263 | XSETINT (val, atol (read_buffer)); | |
2264 | else | |
2265 | abort (); | |
481c6336 RS |
2266 | return val; |
2267 | } | |
2268 | } | |
481c6336 | 2269 | if (isfloat_string (read_buffer)) |
eb659c41 | 2270 | { |
a8972052 PE |
2271 | /* Compute NaN and infinities using 0.0 in a variable, |
2272 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2273 | than we are. */ |
3c329963 | 2274 | double zero = 0.0; |
a8972052 PE |
2275 | |
2276 | double value; | |
2277 | ||
2278 | /* Negate the value ourselves. This treats 0, NaNs, | |
2279 | and infinity properly on IEEE floating point hosts, | |
2280 | and works around a common bug where atof ("-0.0") | |
2281 | drops the sign. */ | |
2282 | int negative = read_buffer[0] == '-'; | |
2283 | ||
2284 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2285 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2286 | switch (p[-1]) |
eb659c41 | 2287 | { |
a8972052 PE |
2288 | case 'F': |
2289 | value = 1.0 / zero; | |
2290 | break; | |
2291 | case 'N': | |
2292 | value = zero / zero; | |
2293 | break; | |
2294 | default: | |
2295 | value = atof (read_buffer + negative); | |
2296 | break; | |
eb659c41 | 2297 | } |
a8972052 PE |
2298 | |
2299 | return make_float (negative ? - value : value); | |
eb659c41 | 2300 | } |
481c6336 | 2301 | } |
078e7b4a | 2302 | |
4ad679f9 EN |
2303 | if (uninterned_symbol) |
2304 | return make_symbol (read_buffer); | |
2305 | else | |
2306 | return intern (read_buffer); | |
078e7b4a JB |
2307 | } |
2308 | } | |
2309 | } | |
2310 | \f | |
9e062b6c RS |
2311 | |
2312 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2313 | static Lisp_Object seen_list; | |
2314 | ||
2315 | static void | |
2316 | substitute_object_in_subtree (object, placeholder) | |
2317 | Lisp_Object object; | |
2318 | Lisp_Object placeholder; | |
2319 | { | |
2320 | Lisp_Object check_object; | |
2321 | ||
2322 | /* We haven't seen any objects when we start. */ | |
2323 | seen_list = Qnil; | |
2324 | ||
2325 | /* Make all the substitutions. */ | |
2326 | check_object | |
2327 | = substitute_object_recurse (object, placeholder, object); | |
2328 | ||
2329 | /* Clear seen_list because we're done with it. */ | |
2330 | seen_list = Qnil; | |
2331 | ||
2332 | /* The returned object here is expected to always eq the | |
2333 | original. */ | |
2334 | if (!EQ (check_object, object)) | |
2335 | error ("Unexpected mutation error in reader"); | |
2336 | } | |
2337 | ||
2338 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2339 | #define SUBSTITUTE(get_val, set_val) \ | |
2340 | { \ | |
2341 | Lisp_Object old_value = get_val; \ | |
2342 | Lisp_Object true_value \ | |
2343 | = substitute_object_recurse (object, placeholder,\ | |
2344 | old_value); \ | |
2345 | \ | |
2346 | if (!EQ (old_value, true_value)) \ | |
2347 | { \ | |
2348 | set_val; \ | |
2349 | } \ | |
2350 | } | |
2351 | ||
2352 | static Lisp_Object | |
2353 | substitute_object_recurse (object, placeholder, subtree) | |
2354 | Lisp_Object object; | |
2355 | Lisp_Object placeholder; | |
2356 | Lisp_Object subtree; | |
2357 | { | |
2358 | /* If we find the placeholder, return the target object. */ | |
2359 | if (EQ (placeholder, subtree)) | |
2360 | return object; | |
2361 | ||
2362 | /* If we've been to this node before, don't explore it again. */ | |
2363 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2364 | return subtree; | |
2365 | ||
2366 | /* If this node can be the entry point to a cycle, remember that | |
2367 | we've seen it. It can only be such an entry point if it was made | |
2368 | by #n=, which means that we can find it as a value in | |
2369 | read_objects. */ | |
2370 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2371 | seen_list = Fcons (subtree, seen_list); | |
2372 | ||
2373 | /* Recurse according to subtree's type. | |
2374 | Every branch must return a Lisp_Object. */ | |
2375 | switch (XTYPE (subtree)) | |
2376 | { | |
2377 | case Lisp_Vectorlike: | |
2378 | { | |
2379 | int i; | |
7c752c80 | 2380 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2381 | for (i = 0; i < length; i++) |
2382 | { | |
2383 | Lisp_Object idx = make_number (i); | |
2384 | SUBSTITUTE (Faref (subtree, idx), | |
2385 | Faset (subtree, idx, true_value)); | |
2386 | } | |
2387 | return subtree; | |
2388 | } | |
2389 | ||
2390 | case Lisp_Cons: | |
2391 | { | |
2392 | SUBSTITUTE (Fcar_safe (subtree), | |
2393 | Fsetcar (subtree, true_value)); | |
2394 | SUBSTITUTE (Fcdr_safe (subtree), | |
2395 | Fsetcdr (subtree, true_value)); | |
2396 | return subtree; | |
2397 | } | |
2398 | ||
9e062b6c RS |
2399 | case Lisp_String: |
2400 | { | |
2401 | /* Check for text properties in each interval. | |
2402 | substitute_in_interval contains part of the logic. */ | |
2403 | ||
2404 | INTERVAL root_interval = XSTRING (subtree)->intervals; | |
2405 | Lisp_Object arg = Fcons (object, placeholder); | |
2406 | ||
2407 | traverse_intervals (root_interval, 1, 0, | |
2408 | &substitute_in_interval, arg); | |
2409 | ||
2410 | return subtree; | |
2411 | } | |
9e062b6c RS |
2412 | |
2413 | /* Other types don't recurse any further. */ | |
2414 | default: | |
2415 | return subtree; | |
2416 | } | |
2417 | } | |
2418 | ||
2419 | /* Helper function for substitute_object_recurse. */ | |
2420 | static void | |
2421 | substitute_in_interval (interval, arg) | |
2422 | INTERVAL interval; | |
2423 | Lisp_Object arg; | |
2424 | { | |
2425 | Lisp_Object object = Fcar (arg); | |
2426 | Lisp_Object placeholder = Fcdr (arg); | |
2427 | ||
2428 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2429 | } | |
2430 | ||
2431 | \f | |
078e7b4a JB |
2432 | #define LEAD_INT 1 |
2433 | #define DOT_CHAR 2 | |
2434 | #define TRAIL_INT 4 | |
2435 | #define E_CHAR 8 | |
2436 | #define EXP_INT 16 | |
2437 | ||
2438 | int | |
2439 | isfloat_string (cp) | |
2440 | register char *cp; | |
2441 | { | |
c1a2f60a | 2442 | register int state; |
078e7b4a | 2443 | |
d8578e58 RS |
2444 | char *start = cp; |
2445 | ||
078e7b4a JB |
2446 | state = 0; |
2447 | if (*cp == '+' || *cp == '-') | |
2448 | cp++; | |
2449 | ||
075027b1 | 2450 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2451 | { |
2452 | state |= LEAD_INT; | |
075027b1 RS |
2453 | while (*cp >= '0' && *cp <= '9') |
2454 | cp++; | |
078e7b4a JB |
2455 | } |
2456 | if (*cp == '.') | |
2457 | { | |
2458 | state |= DOT_CHAR; | |
2459 | cp++; | |
2460 | } | |
075027b1 | 2461 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2462 | { |
2463 | state |= TRAIL_INT; | |
075027b1 | 2464 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2465 | cp++; |
2466 | } | |
a35f88bf | 2467 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2468 | { |
2469 | state |= E_CHAR; | |
2470 | cp++; | |
e73997a1 RS |
2471 | if (*cp == '+' || *cp == '-') |
2472 | cp++; | |
078e7b4a | 2473 | } |
078e7b4a | 2474 | |
075027b1 | 2475 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2476 | { |
2477 | state |= EXP_INT; | |
075027b1 | 2478 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2479 | cp++; |
2480 | } | |
d8578e58 RS |
2481 | else if (cp == start) |
2482 | ; | |
eb659c41 RS |
2483 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2484 | { | |
2485 | state |= EXP_INT; | |
2486 | cp += 3; | |
2487 | } | |
2488 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2489 | { | |
2490 | state |= EXP_INT; | |
2491 | cp += 3; | |
2492 | } | |
2493 | ||
37579d7c | 2494 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2495 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2496 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2497 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2498 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2499 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2500 | } |
cc94f3b2 | 2501 | |
078e7b4a JB |
2502 | \f |
2503 | static Lisp_Object | |
c15cfd1f | 2504 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2505 | Lisp_Object readcharfun; |
c15cfd1f | 2506 | int bytecodeflag; |
078e7b4a JB |
2507 | { |
2508 | register int i; | |
2509 | register int size; | |
2510 | register Lisp_Object *ptr; | |
c15cfd1f | 2511 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2512 | register struct Lisp_Cons *otem; |
2513 | Lisp_Object len; | |
2514 | ||
2515 | tem = read_list (1, readcharfun); | |
2516 | len = Flength (tem); | |
2517 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2518 | ||
078e7b4a JB |
2519 | size = XVECTOR (vector)->size; |
2520 | ptr = XVECTOR (vector)->contents; | |
2521 | for (i = 0; i < size; i++) | |
2522 | { | |
c15cfd1f RS |
2523 | item = Fcar (tem); |
2524 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2525 | bytecode object, the docstring containing the bytecode and | |
2526 | constants values must be treated as unibyte and passed to | |
2527 | Fread, to get the actual bytecode string and constants vector. */ | |
2528 | if (bytecodeflag && load_force_doc_strings) | |
2529 | { | |
2530 | if (i == COMPILED_BYTECODE) | |
2531 | { | |
2532 | if (!STRINGP (item)) | |
2533 | error ("invalid byte code"); | |
2534 | ||
2535 | /* Delay handling the bytecode slot until we know whether | |
2536 | it is lazily-loaded (we can tell by whether the | |
2537 | constants slot is nil). */ | |
2538 | ptr[COMPILED_CONSTANTS] = item; | |
2539 | item = Qnil; | |
2540 | } | |
2541 | else if (i == COMPILED_CONSTANTS) | |
2542 | { | |
2543 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2544 | ||
2545 | if (NILP (item)) | |
2546 | { | |
2547 | /* Coerce string to unibyte (like string-as-unibyte, | |
2548 | but without generating extra garbage and | |
2549 | guaranteeing no change in the contents). */ | |
2550 | XSTRING (bytestr)->size = STRING_BYTES (XSTRING (bytestr)); | |
2551 | SET_STRING_BYTES (XSTRING (bytestr), -1); | |
2552 | ||
2553 | item = Fread (bytestr); | |
2554 | if (!CONSP (item)) | |
2555 | error ("invalid byte code"); | |
2556 | ||
2557 | otem = XCONS (item); | |
c1d497be KR |
2558 | bytestr = XCAR (item); |
2559 | item = XCDR (item); | |
c15cfd1f RS |
2560 | free_cons (otem); |
2561 | } | |
2562 | ||
2563 | /* Now handle the bytecode slot. */ | |
2564 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2565 | } | |
2566 | } | |
2567 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2568 | otem = XCONS (tem); |
2569 | tem = Fcdr (tem); | |
2570 | free_cons (otem); | |
2571 | } | |
2572 | return vector; | |
2573 | } | |
2574 | ||
6f7f43d5 RS |
2575 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2576 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2577 | and make structure pure. */ |
2578 | ||
2579 | static Lisp_Object | |
2580 | read_list (flag, readcharfun) | |
2581 | int flag; | |
2582 | register Lisp_Object readcharfun; | |
2583 | { | |
2584 | /* -1 means check next element for defun, | |
2585 | 0 means don't check, | |
2586 | 1 means already checked and found defun. */ | |
2587 | int defunflag = flag < 0 ? -1 : 0; | |
2588 | Lisp_Object val, tail; | |
2589 | register Lisp_Object elt, tem; | |
2590 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2591 | /* 0 is the normal case. |
b2a30870 RS |
2592 | 1 means this list is a doc reference; replace it with the number 0. |
2593 | 2 means this list is a doc reference; replace it with the doc string. */ | |
821d417e | 2594 | int doc_reference = 0; |
078e7b4a | 2595 | |
17634846 RS |
2596 | /* Initialize this to 1 if we are reading a list. */ |
2597 | int first_in_list = flag <= 0; | |
2598 | ||
078e7b4a JB |
2599 | val = Qnil; |
2600 | tail = Qnil; | |
2601 | ||
2602 | while (1) | |
2603 | { | |
e28552a4 | 2604 | int ch; |
078e7b4a | 2605 | GCPRO2 (val, tail); |
17634846 | 2606 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2607 | UNGCPRO; |
20ea2964 | 2608 | |
17634846 RS |
2609 | first_in_list = 0; |
2610 | ||
821d417e | 2611 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2612 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2613 | && ! NILP (elt) |
821d417e RS |
2614 | && !NILP (Vpurify_flag)) |
2615 | { | |
2616 | if (NILP (Vdoc_file_name)) | |
2617 | /* We have not yet called Snarf-documentation, so assume | |
2618 | this file is described in the DOC-MM.NN file | |
2619 | and Snarf-documentation will fill in the right value later. | |
2620 | For now, replace the whole list with 0. */ | |
2621 | doc_reference = 1; | |
2622 | else | |
2623 | /* We have already called Snarf-documentation, so make a relative | |
2624 | file name for this file, so it can be found properly | |
2625 | in the installed Lisp directory. | |
2626 | We don't use Fexpand_file_name because that would make | |
2627 | the directory absolute now. */ | |
2628 | elt = concat2 (build_string ("../lisp/"), | |
2629 | Ffile_name_nondirectory (elt)); | |
2630 | } | |
b2a30870 | 2631 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2632 | && ! NILP (elt) |
b2a30870 RS |
2633 | && load_force_doc_strings) |
2634 | doc_reference = 2; | |
20ea2964 | 2635 | |
6428369f | 2636 | if (ch) |
078e7b4a JB |
2637 | { |
2638 | if (flag > 0) | |
2639 | { | |
6428369f | 2640 | if (ch == ']') |
078e7b4a | 2641 | return val; |
821d417e RS |
2642 | Fsignal (Qinvalid_read_syntax, |
2643 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 2644 | } |
6428369f | 2645 | if (ch == ')') |
078e7b4a | 2646 | return val; |
6428369f | 2647 | if (ch == '.') |
078e7b4a JB |
2648 | { |
2649 | GCPRO2 (val, tail); | |
265a9e55 | 2650 | if (!NILP (tail)) |
c1d497be | 2651 | XCDR (tail) = read0 (readcharfun); |
078e7b4a JB |
2652 | else |
2653 | val = read0 (readcharfun); | |
17634846 | 2654 | read1 (readcharfun, &ch, 0); |
078e7b4a | 2655 | UNGCPRO; |
6428369f | 2656 | if (ch == ')') |
821d417e RS |
2657 | { |
2658 | if (doc_reference == 1) | |
2659 | return make_number (0); | |
b2a30870 RS |
2660 | if (doc_reference == 2) |
2661 | { | |
2662 | /* Get a doc string from the file we are loading. | |
2663 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 2664 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
2665 | /* Position is negative for user variables. */ |
2666 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
2667 | if (pos >= saved_doc_string_position |
2668 | && pos < (saved_doc_string_position | |
2669 | + saved_doc_string_length)) | |
2670 | { | |
2671 | int start = pos - saved_doc_string_position; | |
2672 | int from, to; | |
2673 | ||
2674 | /* Process quoting with ^A, | |
2675 | and find the end of the string, | |
2676 | which is marked with ^_ (037). */ | |
2677 | for (from = start, to = start; | |
2678 | saved_doc_string[from] != 037;) | |
2679 | { | |
2680 | int c = saved_doc_string[from++]; | |
2681 | if (c == 1) | |
2682 | { | |
2683 | c = saved_doc_string[from++]; | |
2684 | if (c == 1) | |
2685 | saved_doc_string[to++] = c; | |
2686 | else if (c == '0') | |
2687 | saved_doc_string[to++] = 0; | |
2688 | else if (c == '_') | |
2689 | saved_doc_string[to++] = 037; | |
2690 | } | |
2691 | else | |
2692 | saved_doc_string[to++] = c; | |
2693 | } | |
2694 | ||
2695 | return make_string (saved_doc_string + start, | |
2696 | to - start); | |
2697 | } | |
c15cfd1f RS |
2698 | /* Look in prev_saved_doc_string the same way. */ |
2699 | else if (pos >= prev_saved_doc_string_position | |
2700 | && pos < (prev_saved_doc_string_position | |
2701 | + prev_saved_doc_string_length)) | |
2702 | { | |
2703 | int start = pos - prev_saved_doc_string_position; | |
2704 | int from, to; | |
2705 | ||
2706 | /* Process quoting with ^A, | |
2707 | and find the end of the string, | |
2708 | which is marked with ^_ (037). */ | |
2709 | for (from = start, to = start; | |
2710 | prev_saved_doc_string[from] != 037;) | |
2711 | { | |
2712 | int c = prev_saved_doc_string[from++]; | |
2713 | if (c == 1) | |
2714 | { | |
2715 | c = prev_saved_doc_string[from++]; | |
2716 | if (c == 1) | |
2717 | prev_saved_doc_string[to++] = c; | |
2718 | else if (c == '0') | |
2719 | prev_saved_doc_string[to++] = 0; | |
2720 | else if (c == '_') | |
2721 | prev_saved_doc_string[to++] = 037; | |
2722 | } | |
2723 | else | |
2724 | prev_saved_doc_string[to++] = c; | |
2725 | } | |
2726 | ||
2727 | return make_string (prev_saved_doc_string + start, | |
2728 | to - start); | |
2729 | } | |
b2a30870 | 2730 | else |
6fe9cce5 | 2731 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
2732 | } |
2733 | ||
821d417e RS |
2734 | return val; |
2735 | } | |
078e7b4a JB |
2736 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
2737 | } | |
2738 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
2739 | } | |
2740 | tem = (read_pure && flag <= 0 | |
2741 | ? pure_cons (elt, Qnil) | |
2742 | : Fcons (elt, Qnil)); | |
265a9e55 | 2743 | if (!NILP (tail)) |
c1d497be | 2744 | XCDR (tail) = tem; |
078e7b4a JB |
2745 | else |
2746 | val = tem; | |
2747 | tail = tem; | |
2748 | if (defunflag < 0) | |
2749 | defunflag = EQ (elt, Qdefun); | |
2750 | else if (defunflag > 0) | |
2751 | read_pure = 1; | |
2752 | } | |
2753 | } | |
2754 | \f | |
2755 | Lisp_Object Vobarray; | |
2756 | Lisp_Object initial_obarray; | |
2757 | ||
d007f5c8 RS |
2758 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
2759 | ||
2760 | int oblookup_last_bucket_number; | |
2761 | ||
2762 | static int hash_string (); | |
2763 | Lisp_Object oblookup (); | |
2764 | ||
2765 | /* Get an error if OBARRAY is not an obarray. | |
2766 | If it is one, return it. */ | |
2767 | ||
078e7b4a JB |
2768 | Lisp_Object |
2769 | check_obarray (obarray) | |
2770 | Lisp_Object obarray; | |
2771 | { | |
cfff016d | 2772 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
2773 | { |
2774 | /* If Vobarray is now invalid, force it to be valid. */ | |
2775 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
2776 | ||
2777 | obarray = wrong_type_argument (Qvectorp, obarray); | |
2778 | } | |
2779 | return obarray; | |
2780 | } | |
2781 | ||
d007f5c8 RS |
2782 | /* Intern the C string STR: return a symbol with that name, |
2783 | interned in the current obarray. */ | |
078e7b4a JB |
2784 | |
2785 | Lisp_Object | |
2786 | intern (str) | |
2787 | char *str; | |
2788 | { | |
2789 | Lisp_Object tem; | |
2790 | int len = strlen (str); | |
153a17b7 | 2791 | Lisp_Object obarray; |
078e7b4a | 2792 | |
153a17b7 | 2793 | obarray = Vobarray; |
cfff016d | 2794 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 2795 | obarray = check_obarray (obarray); |
e28552a4 | 2796 | tem = oblookup (obarray, str, len, len); |
cfff016d | 2797 | if (SYMBOLP (tem)) |
078e7b4a | 2798 | return tem; |
87631ef7 | 2799 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 2800 | } |
4ad679f9 EN |
2801 | |
2802 | /* Create an uninterned symbol with name STR. */ | |
2803 | ||
2804 | Lisp_Object | |
2805 | make_symbol (str) | |
2806 | char *str; | |
2807 | { | |
2808 | int len = strlen (str); | |
2809 | ||
2810 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 2811 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
2812 | : make_string (str, len))); |
2813 | } | |
d007f5c8 | 2814 | \f |
078e7b4a JB |
2815 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
2816 | "Return the canonical symbol whose name is STRING.\n\ | |
2817 | If there is none, one is created by this function and returned.\n\ | |
2818 | A second optional argument specifies the obarray to use;\n\ | |
2819 | it defaults to the value of `obarray'.") | |
9391b698 EN |
2820 | (string, obarray) |
2821 | Lisp_Object string, obarray; | |
078e7b4a JB |
2822 | { |
2823 | register Lisp_Object tem, sym, *ptr; | |
2824 | ||
265a9e55 | 2825 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2826 | obarray = check_obarray (obarray); |
2827 | ||
9391b698 | 2828 | CHECK_STRING (string, 0); |
078e7b4a | 2829 | |
e28552a4 RS |
2830 | tem = oblookup (obarray, XSTRING (string)->data, |
2831 | XSTRING (string)->size, | |
fc932ac6 | 2832 | STRING_BYTES (XSTRING (string))); |
cfff016d | 2833 | if (!INTEGERP (tem)) |
078e7b4a JB |
2834 | return tem; |
2835 | ||
265a9e55 | 2836 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
2837 | string = Fpurecopy (string); |
2838 | sym = Fmake_symbol (string); | |
4ad679f9 | 2839 | XSYMBOL (sym)->obarray = obarray; |
078e7b4a | 2840 | |
bdd47b1c | 2841 | if ((XSTRING (string)->data[0] == ':') |
a458d45d | 2842 | && EQ (obarray, initial_obarray)) |
a0549832 RS |
2843 | XSYMBOL (sym)->value = sym; |
2844 | ||
078e7b4a | 2845 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 2846 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
2847 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
2848 | else | |
2849 | XSYMBOL (sym)->next = 0; | |
2850 | *ptr = sym; | |
2851 | return sym; | |
2852 | } | |
2853 | ||
2854 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
b55048d4 | 2855 | "Return the canonical symbol named NAME, or nil if none exists.\n\ |
3ccf78e0 DL |
2856 | NAME may be a string or a symbol. If it is a symbol, that exact\n\ |
2857 | symbol is searched for.\n\ | |
078e7b4a JB |
2858 | A second optional argument specifies the obarray to use;\n\ |
2859 | it defaults to the value of `obarray'.") | |
b55048d4 GM |
2860 | (name, obarray) |
2861 | Lisp_Object name, obarray; | |
078e7b4a JB |
2862 | { |
2863 | register Lisp_Object tem; | |
b55048d4 | 2864 | struct Lisp_String *string; |
078e7b4a | 2865 | |
265a9e55 | 2866 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
2867 | obarray = check_obarray (obarray); |
2868 | ||
b55048d4 GM |
2869 | if (!SYMBOLP (name)) |
2870 | { | |
2871 | CHECK_STRING (name, 0); | |
2872 | string = XSTRING (name); | |
2873 | } | |
2874 | else | |
2875 | string = XSYMBOL (name)->name; | |
078e7b4a | 2876 | |
b55048d4 GM |
2877 | tem = oblookup (obarray, string->data, string->size, STRING_BYTES (string)); |
2878 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) | |
2879 | return Qnil; | |
2880 | else | |
078e7b4a | 2881 | return tem; |
078e7b4a | 2882 | } |
d007f5c8 RS |
2883 | \f |
2884 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
2885 | "Delete the symbol named NAME, if any, from OBARRAY.\n\ | |
2886 | The value is t if a symbol was found and deleted, nil otherwise.\n\ | |
2887 | NAME may be a string or a symbol. If it is a symbol, that symbol\n\ | |
2888 | is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\ | |
2889 | OBARRAY defaults to the value of the variable `obarray'.") | |
2890 | (name, obarray) | |
2891 | Lisp_Object name, obarray; | |
2892 | { | |
2893 | register Lisp_Object string, tem; | |
2894 | int hash; | |
2895 | ||
2896 | if (NILP (obarray)) obarray = Vobarray; | |
2897 | obarray = check_obarray (obarray); | |
2898 | ||
2899 | if (SYMBOLP (name)) | |
2900 | XSETSTRING (string, XSYMBOL (name)->name); | |
2901 | else | |
2902 | { | |
2903 | CHECK_STRING (name, 0); | |
2904 | string = name; | |
2905 | } | |
2906 | ||
e28552a4 RS |
2907 | tem = oblookup (obarray, XSTRING (string)->data, |
2908 | XSTRING (string)->size, | |
fc932ac6 | 2909 | STRING_BYTES (XSTRING (string))); |
d007f5c8 RS |
2910 | if (INTEGERP (tem)) |
2911 | return Qnil; | |
2912 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
2913 | if (SYMBOLP (name) && !EQ (name, tem)) | |
2914 | return Qnil; | |
2915 | ||
ca69c42f RS |
2916 | XSYMBOL (tem)->obarray = Qnil; |
2917 | ||
d007f5c8 RS |
2918 | hash = oblookup_last_bucket_number; |
2919 | ||
2920 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
2921 | { |
2922 | if (XSYMBOL (tem)->next) | |
2923 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
2924 | else | |
2925 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
2926 | } | |
d007f5c8 RS |
2927 | else |
2928 | { | |
2929 | Lisp_Object tail, following; | |
2930 | ||
2931 | for (tail = XVECTOR (obarray)->contents[hash]; | |
2932 | XSYMBOL (tail)->next; | |
2933 | tail = following) | |
2934 | { | |
2935 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
2936 | if (EQ (following, tem)) | |
2937 | { | |
2938 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
2939 | break; | |
2940 | } | |
2941 | } | |
2942 | } | |
2943 | ||
2944 | return Qt; | |
2945 | } | |
2946 | \f | |
2947 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
2948 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
2949 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
2950 | |
2951 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
2952 | |
2953 | Lisp_Object | |
e28552a4 | 2954 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a JB |
2955 | Lisp_Object obarray; |
2956 | register char *ptr; | |
e28552a4 | 2957 | int size, size_byte; |
078e7b4a | 2958 | { |
7a70b397 RS |
2959 | int hash; |
2960 | int obsize; | |
078e7b4a JB |
2961 | register Lisp_Object tail; |
2962 | Lisp_Object bucket, tem; | |
2963 | ||
cfff016d | 2964 | if (!VECTORP (obarray) |
7c79a684 | 2965 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
2966 | { |
2967 | obarray = check_obarray (obarray); | |
2968 | obsize = XVECTOR (obarray)->size; | |
2969 | } | |
519418b3 RS |
2970 | /* This is sometimes needed in the middle of GC. */ |
2971 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 2972 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 2973 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
2974 | hash %= obsize; |
2975 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 2976 | oblookup_last_bucket_number = hash; |
078e7b4a JB |
2977 | if (XFASTINT (bucket) == 0) |
2978 | ; | |
cfff016d | 2979 | else if (!SYMBOLP (bucket)) |
078e7b4a | 2980 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
2981 | else |
2982 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 2983 | { |
fc932ac6 | 2984 | if (STRING_BYTES (XSYMBOL (tail)->name) == size_byte |
e28552a4 RS |
2985 | && XSYMBOL (tail)->name->size == size |
2986 | && !bcmp (XSYMBOL (tail)->name->data, ptr, size_byte)) | |
078e7b4a JB |
2987 | return tail; |
2988 | else if (XSYMBOL (tail)->next == 0) | |
2989 | break; | |
2990 | } | |
1805de4f | 2991 | XSETINT (tem, hash); |
078e7b4a JB |
2992 | return tem; |
2993 | } | |
2994 | ||
2995 | static int | |
2996 | hash_string (ptr, len) | |
2997 | unsigned char *ptr; | |
2998 | int len; | |
2999 | { | |
3000 | register unsigned char *p = ptr; | |
3001 | register unsigned char *end = p + len; | |
3002 | register unsigned char c; | |
3003 | register int hash = 0; | |
3004 | ||
3005 | while (p != end) | |
3006 | { | |
3007 | c = *p++; | |
3008 | if (c >= 0140) c -= 40; | |
3009 | hash = ((hash<<3) + (hash>>28) + c); | |
3010 | } | |
3011 | return hash & 07777777777; | |
3012 | } | |
d007f5c8 | 3013 | \f |
078e7b4a JB |
3014 | void |
3015 | map_obarray (obarray, fn, arg) | |
3016 | Lisp_Object obarray; | |
d5b28a9d | 3017 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3018 | Lisp_Object arg; |
3019 | { | |
3020 | register int i; | |
3021 | register Lisp_Object tail; | |
3022 | CHECK_VECTOR (obarray, 1); | |
3023 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) | |
3024 | { | |
3025 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3026 | if (SYMBOLP (tail)) |
078e7b4a JB |
3027 | while (1) |
3028 | { | |
3029 | (*fn) (tail, arg); | |
3030 | if (XSYMBOL (tail)->next == 0) | |
3031 | break; | |
1805de4f | 3032 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3033 | } |
3034 | } | |
3035 | } | |
3036 | ||
d5b28a9d | 3037 | void |
078e7b4a JB |
3038 | mapatoms_1 (sym, function) |
3039 | Lisp_Object sym, function; | |
3040 | { | |
3041 | call1 (function, sym); | |
3042 | } | |
3043 | ||
3044 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
3045 | "Call FUNCTION on every symbol in OBARRAY.\n\ | |
3046 | OBARRAY defaults to the value of `obarray'.") | |
3047 | (function, obarray) | |
3048 | Lisp_Object function, obarray; | |
3049 | { | |
265a9e55 | 3050 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3051 | obarray = check_obarray (obarray); |
3052 | ||
3053 | map_obarray (obarray, mapatoms_1, function); | |
3054 | return Qnil; | |
3055 | } | |
3056 | ||
5e88a39e | 3057 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3058 | |
3059 | void | |
3060 | init_obarray () | |
3061 | { | |
3062 | Lisp_Object oblength; | |
3063 | int hash; | |
3064 | Lisp_Object *tem; | |
3065 | ||
baf69866 | 3066 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3067 | |
491f16a2 | 3068 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3069 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3070 | initial_obarray = Vobarray; | |
3071 | staticpro (&initial_obarray); | |
3072 | /* Intern nil in the obarray */ | |
4ad679f9 | 3073 | XSYMBOL (Qnil)->obarray = Vobarray; |
078e7b4a JB |
3074 | /* These locals are to kludge around a pyramid compiler bug. */ |
3075 | hash = hash_string ("nil", 3); | |
3076 | /* Separate statement here to avoid VAXC bug. */ | |
3077 | hash %= OBARRAY_SIZE; | |
3078 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3079 | *tem = Qnil; | |
3080 | ||
491f16a2 | 3081 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3082 | XSYMBOL (Qnil)->function = Qunbound; |
3083 | XSYMBOL (Qunbound)->value = Qunbound; | |
3084 | XSYMBOL (Qunbound)->function = Qunbound; | |
3085 | ||
3086 | Qt = intern ("t"); | |
3087 | XSYMBOL (Qnil)->value = Qnil; | |
3088 | XSYMBOL (Qnil)->plist = Qnil; | |
3089 | XSYMBOL (Qt)->value = Qt; | |
3090 | ||
3091 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3092 | Vpurify_flag = Qt; | |
3093 | ||
3094 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3095 | staticpro (&Qvariable_documentation); |
078e7b4a | 3096 | |
449fea39 | 3097 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3098 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3099 | } |
3100 | \f | |
3101 | void | |
3102 | defsubr (sname) | |
3103 | struct Lisp_Subr *sname; | |
3104 | { | |
3105 | Lisp_Object sym; | |
3106 | sym = intern (sname->symbol_name); | |
1805de4f | 3107 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3108 | } |
3109 | ||
3110 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3111 | void | |
3112 | defalias (sname, string) | |
3113 | struct Lisp_Subr *sname; | |
3114 | char *string; | |
3115 | { | |
3116 | Lisp_Object sym; | |
3117 | sym = intern (string); | |
1805de4f | 3118 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3119 | } |
3120 | #endif /* NOTDEF */ | |
3121 | ||
078e7b4a | 3122 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3123 | to a C variable of type int. Sample call: */ |
950c215d | 3124 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3125 | void |
e9e00ff2 | 3126 | defvar_int (namestring, address) |
078e7b4a JB |
3127 | char *namestring; |
3128 | int *address; | |
078e7b4a | 3129 | { |
1a0f90f7 | 3130 | Lisp_Object sym, val; |
078e7b4a | 3131 | sym = intern (namestring); |
1a0f90f7 | 3132 | val = allocate_misc (); |
47e28b2c | 3133 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3134 | XINTFWD (val)->intvar = address; |
1a0f90f7 | 3135 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3136 | } |
3137 | ||
3138 | /* Similar but define a variable whose value is T if address contains 1, | |
1a0f90f7 | 3139 | NIL if address contains 0 */ |
078e7b4a | 3140 | void |
e9e00ff2 | 3141 | defvar_bool (namestring, address) |
078e7b4a JB |
3142 | char *namestring; |
3143 | int *address; | |
078e7b4a | 3144 | { |
1a0f90f7 | 3145 | Lisp_Object sym, val; |
078e7b4a | 3146 | sym = intern (namestring); |
1a0f90f7 | 3147 | val = allocate_misc (); |
47e28b2c | 3148 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3149 | XBOOLFWD (val)->boolvar = address; |
1a0f90f7 | 3150 | XSYMBOL (sym)->value = val; |
1ffcc3b1 | 3151 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3152 | } |
3153 | ||
1a0f90f7 KH |
3154 | /* Similar but define a variable whose value is the Lisp Object stored |
3155 | at address. Two versions: with and without gc-marking of the C | |
3156 | variable. The nopro version is used when that variable will be | |
3157 | gc-marked for some other reason, since marking the same slot twice | |
3158 | can cause trouble with strings. */ | |
078e7b4a | 3159 | void |
1a0f90f7 | 3160 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3161 | char *namestring; |
3162 | Lisp_Object *address; | |
078e7b4a | 3163 | { |
1a0f90f7 | 3164 | Lisp_Object sym, val; |
078e7b4a | 3165 | sym = intern (namestring); |
1a0f90f7 | 3166 | val = allocate_misc (); |
47e28b2c | 3167 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3168 | XOBJFWD (val)->objvar = address; |
1a0f90f7 | 3169 | XSYMBOL (sym)->value = val; |
078e7b4a JB |
3170 | } |
3171 | ||
078e7b4a | 3172 | void |
1a0f90f7 | 3173 | defvar_lisp (namestring, address) |
078e7b4a JB |
3174 | char *namestring; |
3175 | Lisp_Object *address; | |
078e7b4a | 3176 | { |
1a0f90f7 KH |
3177 | defvar_lisp_nopro (namestring, address); |
3178 | staticpro (address); | |
078e7b4a JB |
3179 | } |
3180 | ||
078e7b4a | 3181 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3182 | the current buffer. address is the address of the slot in the buffer |
3183 | that is current now. */ | |
078e7b4a JB |
3184 | |
3185 | void | |
4360b0c6 | 3186 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3187 | char *namestring; |
3188 | Lisp_Object *address; | |
4360b0c6 | 3189 | Lisp_Object type; |
078e7b4a JB |
3190 | char *doc; |
3191 | { | |
1a0f90f7 | 3192 | Lisp_Object sym, val; |
078e7b4a JB |
3193 | int offset; |
3194 | extern struct buffer buffer_local_symbols; | |
3195 | ||
3196 | sym = intern (namestring); | |
1a0f90f7 | 3197 | val = allocate_misc (); |
078e7b4a JB |
3198 | offset = (char *)address - (char *)current_buffer; |
3199 | ||
47e28b2c | 3200 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3201 | XBUFFER_OBJFWD (val)->offset = offset; |
1a0f90f7 | 3202 | XSYMBOL (sym)->value = val; |
11fd416e GM |
3203 | PER_BUFFER_SYMBOL (offset) = sym; |
3204 | PER_BUFFER_TYPE (offset) = type; | |
cf611f01 | 3205 | |
11fd416e | 3206 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3207 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3208 | slot of buffer_local_flags */ | |
3209 | abort (); | |
3210 | } | |
3211 | ||
950c215d KH |
3212 | |
3213 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3214 | at a particular offset in the current kboard object. */ |
950c215d KH |
3215 | |
3216 | void | |
4ac38690 | 3217 | defvar_kboard (namestring, offset) |
950c215d KH |
3218 | char *namestring; |
3219 | int offset; | |
3220 | { | |
3221 | Lisp_Object sym, val; | |
3222 | sym = intern (namestring); | |
3223 | val = allocate_misc (); | |
47e28b2c | 3224 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3225 | XKBOARD_OBJFWD (val)->offset = offset; |
950c215d KH |
3226 | XSYMBOL (sym)->value = val; |
3227 | } | |
078e7b4a | 3228 | \f |
11938f10 KH |
3229 | /* Record the value of load-path used at the start of dumping |
3230 | so we can see if the site changed it later during dumping. */ | |
3231 | static Lisp_Object dump_path; | |
3232 | ||
d5b28a9d | 3233 | void |
279499f0 | 3234 | init_lread () |
078e7b4a | 3235 | { |
46947372 | 3236 | char *normal; |
e73997a1 | 3237 | int turn_off_warning = 0; |
078e7b4a | 3238 | |
279499f0 | 3239 | /* Compute the default load-path. */ |
46947372 JB |
3240 | #ifdef CANNOT_DUMP |
3241 | normal = PATH_LOADSEARCH; | |
e065a56e | 3242 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3243 | #else |
3244 | if (NILP (Vpurify_flag)) | |
3245 | normal = PATH_LOADSEARCH; | |
279499f0 | 3246 | else |
46947372 | 3247 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3248 | |
46947372 JB |
3249 | /* In a dumped Emacs, we normally have to reset the value of |
3250 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3251 | uses ../lisp, instead of the path of the installed elisp | |
3252 | libraries. However, if it appears that Vload_path was changed | |
3253 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3254 | if (initialized) |
3255 | { | |
4746118a | 3256 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3257 | { |
3258 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3259 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3260 | { |
74180aa4 | 3261 | /* Add to the path the lisp subdir of the |
3a3056e5 RS |
3262 | installation dir, if it exists. */ |
3263 | Lisp_Object tem, tem1; | |
74180aa4 RS |
3264 | tem = Fexpand_file_name (build_string ("lisp"), |
3265 | Vinstallation_directory); | |
3a3056e5 RS |
3266 | tem1 = Ffile_exists_p (tem); |
3267 | if (!NILP (tem1)) | |
3268 | { | |
3269 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3270 | { |
3271 | turn_off_warning = 1; | |
3272 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3273 | } | |
3a3056e5 RS |
3274 | } |
3275 | else | |
3276 | /* That dir doesn't exist, so add the build-time | |
3277 | Lisp dirs instead. */ | |
3278 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3279 | |
9fbc0116 RS |
3280 | /* Add leim under the installation dir, if it exists. */ |
3281 | tem = Fexpand_file_name (build_string ("leim"), | |
3282 | Vinstallation_directory); | |
3283 | tem1 = Ffile_exists_p (tem); | |
3284 | if (!NILP (tem1)) | |
3285 | { | |
3286 | if (NILP (Fmember (tem, Vload_path))) | |
3287 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3288 | } | |
3289 | ||
c478f98c RS |
3290 | /* Add site-list under the installation dir, if it exists. */ |
3291 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3292 | Vinstallation_directory); | |
3293 | tem1 = Ffile_exists_p (tem); | |
3294 | if (!NILP (tem1)) | |
3295 | { | |
3296 | if (NILP (Fmember (tem, Vload_path))) | |
3297 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3298 | } | |
0f337465 RS |
3299 | |
3300 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3301 | and it is run from where it was built, add to load-path |
3302 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3303 | |
3304 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3305 | { | |
33046fc9 RS |
3306 | Lisp_Object tem2; |
3307 | ||
0f337465 RS |
3308 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3309 | Vinstallation_directory); | |
3310 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3311 | |
3312 | /* Don't be fooled if they moved the entire source tree | |
3313 | AFTER dumping Emacs. If the build directory is indeed | |
3314 | different from the source dir, src/Makefile.in and | |
3315 | src/Makefile will not be found together. */ | |
3316 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3317 | Vinstallation_directory); | |
3318 | tem2 = Ffile_exists_p (tem); | |
3319 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3320 | { |
3321 | tem = Fexpand_file_name (build_string ("lisp"), | |
3322 | Vsource_directory); | |
3323 | ||
3324 | if (NILP (Fmember (tem, Vload_path))) | |
3325 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3326 | ||
9fbc0116 RS |
3327 | tem = Fexpand_file_name (build_string ("leim"), |
3328 | Vsource_directory); | |
3329 | ||
3330 | if (NILP (Fmember (tem, Vload_path))) | |
3331 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3332 | ||
0f337465 RS |
3333 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3334 | Vsource_directory); | |
3335 | ||
3336 | if (NILP (Fmember (tem, Vload_path))) | |
3337 | Vload_path = nconc2 (Vload_path, Fcons (tem, Qnil)); | |
3338 | } | |
3339 | } | |
80667d53 RS |
3340 | } |
3341 | } | |
4746118a JB |
3342 | } |
3343 | else | |
11938f10 | 3344 | { |
7b396c6c RS |
3345 | /* NORMAL refers to the lisp dir in the source directory. */ |
3346 | /* We used to add ../lisp at the front here, but | |
3347 | that caused trouble because it was copied from dump_path | |
3348 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3349 | It should be unnecessary. */ | |
3350 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3351 | dump_path = Vload_path; |
3352 | } | |
46947372 | 3353 | #endif |
279499f0 | 3354 | |
317073d5 RS |
3355 | #ifndef WINDOWSNT |
3356 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is | |
3357 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3358 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
317073d5 RS |
3359 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
3360 | ||
078e7b4a | 3361 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3362 | if (!turn_off_warning) |
3363 | { | |
3364 | Lisp_Object path_tail; | |
078e7b4a | 3365 | |
e73997a1 RS |
3366 | for (path_tail = Vload_path; |
3367 | !NILP (path_tail); | |
c1d497be | 3368 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3369 | { |
3370 | Lisp_Object dirfile; | |
3371 | dirfile = Fcar (path_tail); | |
3372 | if (STRINGP (dirfile)) | |
3373 | { | |
3374 | dirfile = Fdirectory_file_name (dirfile); | |
3375 | if (access (XSTRING (dirfile)->data, 0) < 0) | |
85496b8c | 3376 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3377 | XCAR (path_tail)); |
e73997a1 RS |
3378 | } |
3379 | } | |
3380 | } | |
317073d5 | 3381 | #endif /* WINDOWSNT */ |
46947372 JB |
3382 | |
3383 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3384 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3385 | #ifndef CANNOT_DUMP |
46947372 JB |
3386 | if (NILP (Vpurify_flag) |
3387 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3388 | #endif |
279499f0 | 3389 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3390 | |
3391 | Vvalues = Qnil; | |
3392 | ||
078e7b4a | 3393 | load_in_progress = 0; |
4e53f562 | 3394 | Vload_file_name = Qnil; |
d2c6be7f RS |
3395 | |
3396 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3397 | |
3398 | Vstandard_input = Qt; | |
078e7b4a JB |
3399 | } |
3400 | ||
85496b8c RS |
3401 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3402 | does not exist. Print it on stderr and put it in *Message*. */ | |
3403 | ||
d5b28a9d | 3404 | void |
85496b8c RS |
3405 | dir_warning (format, dirname) |
3406 | char *format; | |
3407 | Lisp_Object dirname; | |
3408 | { | |
3409 | char *buffer | |
3410 | = (char *) alloca (XSTRING (dirname)->size + strlen (format) + 5); | |
3411 | ||
3412 | fprintf (stderr, format, XSTRING (dirname)->data); | |
3413 | sprintf (buffer, format, XSTRING (dirname)->data); | |
9b69357e GV |
3414 | /* Don't log the warning before we've initialized!! */ |
3415 | if (initialized) | |
3416 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3417 | } |
3418 | ||
078e7b4a | 3419 | void |
279499f0 | 3420 | syms_of_lread () |
078e7b4a JB |
3421 | { |
3422 | defsubr (&Sread); | |
3423 | defsubr (&Sread_from_string); | |
3424 | defsubr (&Sintern); | |
3425 | defsubr (&Sintern_soft); | |
d007f5c8 | 3426 | defsubr (&Sunintern); |
078e7b4a | 3427 | defsubr (&Sload); |
228d4b1c | 3428 | defsubr (&Seval_buffer); |
078e7b4a JB |
3429 | defsubr (&Seval_region); |
3430 | defsubr (&Sread_char); | |
3431 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3432 | defsubr (&Sread_event); |
078e7b4a JB |
3433 | defsubr (&Sget_file_char); |
3434 | defsubr (&Smapatoms); | |
3435 | ||
3436 | DEFVAR_LISP ("obarray", &Vobarray, | |
3437 | "Symbol table for use by `intern' and `read'.\n\ | |
3438 | It is a vector whose length ought to be prime for best results.\n\ | |
3439 | The vector's contents don't make sense if examined from Lisp programs;\n\ | |
3440 | to find all the symbols in an obarray, use `mapatoms'."); | |
3441 | ||
3442 | DEFVAR_LISP ("values", &Vvalues, | |
3443 | "List of values of all expressions which were read, evaluated and printed.\n\ | |
3444 | Order is reverse chronological."); | |
3445 | ||
3446 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
3447 | "Stream for read to get input from.\n\ | |
3448 | See documentation of `read' for possible values."); | |
3449 | Vstandard_input = Qt; | |
3450 | ||
3451 | DEFVAR_LISP ("load-path", &Vload_path, | |
3452 | "*List of directories to search for files to load.\n\ | |
3453 | Each element is a string (directory name) or nil (try default directory).\n\ | |
3454 | Initialized based on EMACSLOADPATH environment variable, if any,\n\ | |
57bda87a | 3455 | otherwise to default specified by file `epaths.h' when Emacs was built."); |
078e7b4a JB |
3456 | |
3457 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, | |
3458 | "Non-nil iff inside of `load'."); | |
3459 | ||
3460 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
3461 | "An alist of expressions to be evalled when particular files are loaded.\n\ | |
3462 | Each element looks like (FILENAME FORMS...).\n\ | |
3463 | When `load' is run and the file-name argument is FILENAME,\n\ | |
3464 | the FORMS in the corresponding element are executed at the end of loading.\n\n\ | |
3465 | FILENAME must match exactly! Normally FILENAME is the name of a library,\n\ | |
3466 | with no directory specified, since that is how `load' is normally called.\n\ | |
3467 | An error in FORMS does not undo the load,\n\ | |
3468 | but does prevent execution of the rest of the FORMS."); | |
3469 | Vafter_load_alist = Qnil; | |
3470 | ||
ae321d28 RS |
3471 | DEFVAR_LISP ("load-history", &Vload_history, |
3472 | "Alist mapping source file names to symbols and features.\n\ | |
3473 | Each alist element is a list that starts with a file name,\n\ | |
3474 | except for one element (optional) that starts with nil and describes\n\ | |
3475 | definitions evaluated from buffers not visiting files.\n\ | |
3476 | The remaining elements of each list are symbols defined as functions\n\ | |
e8c7d424 | 3477 | or variables, and cons cells `(provide . FEATURE)', `(require . FEATURE)',\n\ |
7973e637 | 3478 | and `(autoload . SYMBOL)'."); |
ae321d28 RS |
3479 | Vload_history = Qnil; |
3480 | ||
20ea2964 RS |
3481 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
3482 | "Full name of file being loaded by `load'."); | |
3483 | Vload_file_name = Qnil; | |
3484 | ||
4116ab9f | 3485 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
d750b1f5 AI |
3486 | "File name, including directory, of user's initialization file.\n\ |
3487 | If the file loaded had extension `.elc' and there was a corresponding `.el'\n\ | |
3488 | file, this variable contains the name of the .el file, suitable for use\n\ | |
d826d78b | 3489 | by functions like `custom-save-all' which edit the init file."); |
4116ab9f KH |
3490 | Vuser_init_file = Qnil; |
3491 | ||
8a1f1537 RS |
3492 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
3493 | "Used for internal purposes by `load'."); | |
ae321d28 RS |
3494 | Vcurrent_load_list = Qnil; |
3495 | ||
84a15045 RS |
3496 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
3497 | "Function used by `load' and `eval-region' for reading expressions.\n\ | |
3498 | The default is nil, which means use the function `read'."); | |
3499 | Vload_read_function = Qnil; | |
3500 | ||
fe0e03f3 KH |
3501 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
3502 | "Function called in `load' for loading an Emacs lisp source file.\n\ | |
3503 | This function is for doing code conversion before reading the source file.\n\ | |
3504 | If nil, loading is done without any code conversion.\n\ | |
3505 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\ | |
3506 | FULLNAME is the full name of FILE.\n\ | |
3507 | See `load' for the meaning of the remaining arguments."); | |
3508 | Vload_source_file_function = Qnil; | |
3509 | ||
b2a30870 RS |
3510 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
3511 | "Non-nil means `load' should force-load all dynamic doc strings.\n\ | |
3512 | This is useful when the file being loaded is a temporary copy."); | |
3513 | load_force_doc_strings = 0; | |
3514 | ||
94e554db | 3515 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
afdca070 RS |
3516 | "Non-nil means `read' converts strings to unibyte whenever possible.\n\ |
3517 | This is normally bound by `load' and `eval-buffer' to control `read',\n\ | |
3518 | and is not meant for users to change."); | |
94e554db RS |
3519 | load_convert_to_unibyte = 0; |
3520 | ||
1521a8fa RS |
3521 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
3522 | "Directory in which Emacs sources were found when Emacs was built.\n\ | |
3523 | You cannot count on them to still be there!"); | |
a90ba1e2 KH |
3524 | Vsource_directory |
3525 | = Fexpand_file_name (build_string ("../"), | |
3526 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3527 | ||
4b104c41 RS |
3528 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
3529 | "List of files that were preloaded (when dumping Emacs)."); | |
3530 | Vpreloaded_file_list = Qnil; | |
3531 | ||
1ffcc3b1 DL |
3532 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
3533 | "List of all DEFVAR_BOOL variables, used by the byte code optimizer."); | |
3534 | Vbyte_boolean_vars = Qnil; | |
3535 | ||
da84f340 GM |
3536 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
3537 | "Non-nil means load dangerous compiled Lisp files.\n\ | |
3538 | Some versions of XEmacs use different byte codes than Emacs. These\n\ | |
3539 | incompatible byte codes can make Emacs crash when it tries to execute\n\ | |
3540 | them."); | |
3541 | load_dangerous_libraries = 0; | |
3542 | ||
3543 | Vbytecomp_version_regexp = build_string ("^;;;.in Emacs version"); | |
3544 | staticpro (&Vbytecomp_version_regexp); | |
3545 | ||
a90ba1e2 KH |
3546 | /* Vsource_directory was initialized in init_lread. */ |
3547 | ||
d2c6be7f RS |
3548 | load_descriptor_list = Qnil; |
3549 | staticpro (&load_descriptor_list); | |
3550 | ||
8a1f1537 RS |
3551 | Qcurrent_load_list = intern ("current-load-list"); |
3552 | staticpro (&Qcurrent_load_list); | |
3553 | ||
078e7b4a JB |
3554 | Qstandard_input = intern ("standard-input"); |
3555 | staticpro (&Qstandard_input); | |
3556 | ||
3557 | Qread_char = intern ("read-char"); | |
3558 | staticpro (&Qread_char); | |
3559 | ||
3560 | Qget_file_char = intern ("get-file-char"); | |
3561 | staticpro (&Qget_file_char); | |
7bd279cd | 3562 | |
17634846 RS |
3563 | Qbackquote = intern ("`"); |
3564 | staticpro (&Qbackquote); | |
3565 | Qcomma = intern (","); | |
3566 | staticpro (&Qcomma); | |
3567 | Qcomma_at = intern (",@"); | |
3568 | staticpro (&Qcomma_at); | |
3569 | Qcomma_dot = intern (",."); | |
3570 | staticpro (&Qcomma_dot); | |
3571 | ||
74549846 RS |
3572 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
3573 | staticpro (&Qinhibit_file_name_operation); | |
3574 | ||
7bd279cd RS |
3575 | Qascii_character = intern ("ascii-character"); |
3576 | staticpro (&Qascii_character); | |
c2225d00 | 3577 | |
2b6cae0c RS |
3578 | Qfunction = intern ("function"); |
3579 | staticpro (&Qfunction); | |
3580 | ||
c2225d00 RS |
3581 | Qload = intern ("load"); |
3582 | staticpro (&Qload); | |
20ea2964 RS |
3583 | |
3584 | Qload_file_name = intern ("load-file-name"); | |
3585 | staticpro (&Qload_file_name); | |
11938f10 KH |
3586 | |
3587 | staticpro (&dump_path); | |
4ad679f9 EN |
3588 | |
3589 | staticpro (&read_objects); | |
3590 | read_objects = Qnil; | |
9e062b6c RS |
3591 | staticpro (&seen_list); |
3592 | ||
078e7b4a | 3593 | } |