Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
aaef169d | 4 | 2005, 2006 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
46947372 | 10 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
078e7b4a JB |
22 | |
23 | ||
98280b76 | 24 | #include <config.h> |
078e7b4a JB |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/file.h> | |
2c1b5dbe | 29 | #include <errno.h> |
078e7b4a | 30 | #include "lisp.h" |
95384e1e | 31 | #include "intervals.h" |
078e7b4a | 32 | #include "buffer.h" |
fe0e03f3 | 33 | #include "charset.h" |
57bda87a | 34 | #include <epaths.h> |
078e7b4a | 35 | #include "commands.h" |
e37c0805 | 36 | #include "keyboard.h" |
7bd279cd | 37 | #include "termhooks.h" |
eb191db2 | 38 | #include "coding.h" |
078e7b4a JB |
39 | |
40 | #ifdef lint | |
41 | #include <sys/inode.h> | |
42 | #endif /* lint */ | |
43 | ||
79051982 RS |
44 | #ifdef MSDOS |
45 | #if __DJGPP__ < 2 | |
46 | #include <unistd.h> /* to get X_OK */ | |
47 | #endif | |
48 | #include "msdos.h" | |
49 | #endif | |
50 | ||
c1a2f60a AS |
51 | #ifdef HAVE_UNISTD_H |
52 | #include <unistd.h> | |
53 | #endif | |
54 | ||
078e7b4a JB |
55 | #ifndef X_OK |
56 | #define X_OK 01 | |
57 | #endif | |
58 | ||
078e7b4a | 59 | #include <math.h> |
078e7b4a | 60 | |
c011e9a5 RS |
61 | #ifdef HAVE_SETLOCALE |
62 | #include <locale.h> | |
63 | #endif /* HAVE_SETLOCALE */ | |
64 | ||
bcdec28b DL |
65 | #ifdef HAVE_FCNTL_H |
66 | #include <fcntl.h> | |
67 | #endif | |
f7d279f0 RS |
68 | #ifndef O_RDONLY |
69 | #define O_RDONLY 0 | |
70 | #endif | |
71 | ||
79cf851c | 72 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
73 | #define file_offset off_t |
74 | #define file_tell ftello | |
75 | #else | |
76 | #define file_offset long | |
77 | #define file_tell ftell | |
78 | #endif | |
79 | ||
03695ace | 80 | #ifndef USE_CRT_DLL |
2c1b5dbe | 81 | extern int errno; |
03695ace | 82 | #endif |
2c1b5dbe | 83 | |
8a1f1537 | 84 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 85 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 86 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 87 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 88 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 89 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
7bd279cd RS |
90 | |
91 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 92 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 93 | |
9942fa0c | 94 | /* non-zero iff inside `load' */ |
078e7b4a JB |
95 | int load_in_progress; |
96 | ||
1521a8fa RS |
97 | /* Directory in which the sources were found. */ |
98 | Lisp_Object Vsource_directory; | |
99 | ||
e61b9b87 SM |
100 | /* Search path and suffixes for files to be loaded. */ |
101 | Lisp_Object Vload_path, Vload_suffixes, default_suffixes; | |
078e7b4a | 102 | |
4116ab9f KH |
103 | /* File name of user's init file. */ |
104 | Lisp_Object Vuser_init_file; | |
105 | ||
ae321d28 RS |
106 | /* This is the user-visible association list that maps features to |
107 | lists of defs in their load files. */ | |
108 | Lisp_Object Vload_history; | |
109 | ||
20ea2964 | 110 | /* This is used to build the load history. */ |
ae321d28 RS |
111 | Lisp_Object Vcurrent_load_list; |
112 | ||
4b104c41 RS |
113 | /* List of files that were preloaded. */ |
114 | Lisp_Object Vpreloaded_file_list; | |
115 | ||
20ea2964 RS |
116 | /* Name of file actually being read by `load'. */ |
117 | Lisp_Object Vload_file_name; | |
118 | ||
84a15045 RS |
119 | /* Function to use for reading, in `load' and friends. */ |
120 | Lisp_Object Vload_read_function; | |
121 | ||
4ad679f9 EN |
122 | /* The association list of objects read with the #n=object form. |
123 | Each member of the list has the form (n . object), and is used to | |
124 | look up the object for the corresponding #n# construct. | |
125 | It must be set to nil before all top-level calls to read0. */ | |
126 | Lisp_Object read_objects; | |
127 | ||
b2a30870 RS |
128 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
129 | static int load_force_doc_strings; | |
130 | ||
94e554db RS |
131 | /* Nonzero means read should convert strings to unibyte. */ |
132 | static int load_convert_to_unibyte; | |
133 | ||
fe0e03f3 KH |
134 | /* Function to use for loading an Emacs lisp source file (not |
135 | compiled) instead of readevalloop. */ | |
136 | Lisp_Object Vload_source_file_function; | |
137 | ||
1ffcc3b1 DL |
138 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
139 | Lisp_Object Vbyte_boolean_vars; | |
140 | ||
abb13b09 CW |
141 | /* Whether or not to add a `read-positions' property to symbols |
142 | read. */ | |
143 | Lisp_Object Vread_with_symbol_positions; | |
144 | ||
145 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
146 | Lisp_Object Vread_symbol_positions_list; | |
147 | ||
d2c6be7f RS |
148 | /* List of descriptors now open for Fload. */ |
149 | static Lisp_Object load_descriptor_list; | |
150 | ||
b2a30870 | 151 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
152 | static FILE *instream; |
153 | ||
154 | /* When nonzero, read conses in pure space */ | |
155 | static int read_pure; | |
156 | ||
b2a30870 | 157 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 158 | static int read_from_string_index; |
bed23cb2 | 159 | static int read_from_string_index_byte; |
078e7b4a | 160 | static int read_from_string_limit; |
17634846 | 161 | |
6f7f43d5 RS |
162 | /* Number of bytes left to read in the buffer character |
163 | that `readchar' has already advanced over. */ | |
164 | static int readchar_backlog; | |
abb13b09 CW |
165 | /* Number of characters read in the current call to Fread or |
166 | Fread_from_string. */ | |
167 | static int readchar_count; | |
6f7f43d5 | 168 | |
c15cfd1f | 169 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
170 | static char *saved_doc_string; |
171 | /* Length of buffer allocated in saved_doc_string. */ | |
172 | static int saved_doc_string_size; | |
173 | /* Length of actual data in saved_doc_string. */ | |
174 | static int saved_doc_string_length; | |
175 | /* This is the file position that string came from. */ | |
68c45bf0 | 176 | static file_offset saved_doc_string_position; |
b2a30870 | 177 | |
c15cfd1f RS |
178 | /* This contains the previous string skipped with #@. |
179 | We copy it from saved_doc_string when a new string | |
180 | is put in saved_doc_string. */ | |
181 | static char *prev_saved_doc_string; | |
182 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
183 | static int prev_saved_doc_string_size; | |
184 | /* Length of actual data in prev_saved_doc_string. */ | |
185 | static int prev_saved_doc_string_length; | |
186 | /* This is the file position that string came from. */ | |
68c45bf0 | 187 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 188 | |
17634846 RS |
189 | /* Nonzero means inside a new-style backquote |
190 | with no surrounding parentheses. | |
191 | Fread initializes this to zero, so we need not specbind it | |
192 | or worry about what happens to it when there is an error. */ | |
193 | static int new_backquote_flag; | |
7ee3bd7b GM |
194 | |
195 | /* A list of file names for files being loaded in Fload. Used to | |
196 | check for recursive loads. */ | |
197 | ||
9942fa0c | 198 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 199 | |
550a625e GM |
200 | /* Non-zero means load dangerous compiled Lisp files. */ |
201 | ||
202 | int load_dangerous_libraries; | |
203 | ||
204 | /* A regular expression used to detect files compiled with Emacs. */ | |
205 | ||
206 | static Lisp_Object Vbytecomp_version_regexp; | |
207 | ||
a742d646 | 208 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 209 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 210 | Lisp_Object (*) (), int, |
4c03c46d | 211 | Lisp_Object, Lisp_Object, |
550a625e GM |
212 | Lisp_Object, Lisp_Object)); |
213 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
214 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
215 | ||
078e7b4a JB |
216 | \f |
217 | /* Handle unreading and rereading of characters. | |
218 | Write READCHAR to read a character, | |
fe0e03f3 KH |
219 | UNREAD(c) to unread c to be read again. |
220 | ||
abb13b09 CW |
221 | The READCHAR and UNREAD macros are meant for reading/unreading a |
222 | byte code; they do not handle multibyte characters. The caller | |
223 | should manage them if necessary. | |
177c0ea7 | 224 | |
abb13b09 CW |
225 | [ Actually that seems to be a lie; READCHAR will definitely read |
226 | multibyte characters from buffer sources, at least. Is the | |
227 | comment just out of date? | |
228 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 229 | */ |
078e7b4a JB |
230 | |
231 | #define READCHAR readchar (readcharfun) | |
232 | #define UNREAD(c) unreadchar (readcharfun, c) | |
233 | ||
234 | static int | |
235 | readchar (readcharfun) | |
236 | Lisp_Object readcharfun; | |
237 | { | |
238 | Lisp_Object tem; | |
95384e1e | 239 | register int c; |
078e7b4a | 240 | |
abb13b09 | 241 | readchar_count++; |
177c0ea7 | 242 | |
cfff016d | 243 | if (BUFFERP (readcharfun)) |
078e7b4a | 244 | { |
bed23cb2 | 245 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 246 | |
bed23cb2 RS |
247 | int pt_byte = BUF_PT_BYTE (inbuffer); |
248 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 249 | |
00a9a935 RS |
250 | if (readchar_backlog > 0) |
251 | /* We get the address of the byte just passed, | |
252 | which is the last byte of the character. | |
253 | The other bytes in this character are consecutive with it, | |
254 | because the gap can't be in the middle of a character. */ | |
255 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
256 | - --readchar_backlog); | |
257 | ||
bed23cb2 RS |
258 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
259 | return -1; | |
078e7b4a | 260 | |
00a9a935 RS |
261 | readchar_backlog = -1; |
262 | ||
bed23cb2 RS |
263 | if (! NILP (inbuffer->enable_multibyte_characters)) |
264 | { | |
00a9a935 | 265 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
266 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
267 | BUF_INC_POS (inbuffer, pt_byte); | |
268 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
269 | } | |
270 | else | |
271 | { | |
272 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
273 | pt_byte++; | |
6f7f43d5 | 274 | } |
bed23cb2 | 275 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 276 | |
bed23cb2 | 277 | return c; |
078e7b4a | 278 | } |
cfff016d | 279 | if (MARKERP (readcharfun)) |
078e7b4a | 280 | { |
bed23cb2 | 281 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 282 | |
bed23cb2 RS |
283 | int bytepos = marker_byte_position (readcharfun); |
284 | int orig_bytepos = bytepos; | |
6f7f43d5 | 285 | |
00a9a935 RS |
286 | if (readchar_backlog > 0) |
287 | /* We get the address of the byte just passed, | |
288 | which is the last byte of the character. | |
289 | The other bytes in this character are consecutive with it, | |
290 | because the gap can't be in the middle of a character. */ | |
291 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
292 | - --readchar_backlog); | |
293 | ||
bed23cb2 RS |
294 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
295 | return -1; | |
6f7f43d5 | 296 | |
00a9a935 RS |
297 | readchar_backlog = -1; |
298 | ||
bed23cb2 RS |
299 | if (! NILP (inbuffer->enable_multibyte_characters)) |
300 | { | |
00a9a935 | 301 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
302 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
303 | BUF_INC_POS (inbuffer, bytepos); | |
304 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
305 | } | |
306 | else | |
307 | { | |
308 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
309 | bytepos++; | |
6f7f43d5 RS |
310 | } |
311 | ||
bed23cb2 RS |
312 | XMARKER (readcharfun)->bytepos = bytepos; |
313 | XMARKER (readcharfun)->charpos++; | |
314 | ||
315 | return c; | |
078e7b4a | 316 | } |
ad0153e4 RS |
317 | |
318 | if (EQ (readcharfun, Qlambda)) | |
319 | return read_bytecode_char (0); | |
320 | ||
078e7b4a | 321 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
322 | { |
323 | c = getc (instream); | |
324 | #ifdef EINTR | |
325 | /* Interrupted reads have been observed while reading over the network */ | |
326 | while (c == EOF && ferror (instream) && errno == EINTR) | |
327 | { | |
495bf630 | 328 | QUIT; |
2c1b5dbe KH |
329 | clearerr (instream); |
330 | c = getc (instream); | |
331 | } | |
332 | #endif | |
333 | return c; | |
334 | } | |
078e7b4a | 335 | |
cfff016d | 336 | if (STRINGP (readcharfun)) |
078e7b4a | 337 | { |
bed23cb2 | 338 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 339 | c = -1; |
f0354c03 | 340 | else |
bed23cb2 RS |
341 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
342 | read_from_string_index, | |
343 | read_from_string_index_byte); | |
6f7f43d5 | 344 | |
078e7b4a JB |
345 | return c; |
346 | } | |
347 | ||
348 | tem = call0 (readcharfun); | |
349 | ||
265a9e55 | 350 | if (NILP (tem)) |
078e7b4a JB |
351 | return -1; |
352 | return XINT (tem); | |
353 | } | |
354 | ||
355 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
356 | If the stream is a user function, call it with the char as argument. */ | |
357 | ||
358 | static void | |
359 | unreadchar (readcharfun, c) | |
360 | Lisp_Object readcharfun; | |
361 | int c; | |
362 | { | |
abb13b09 | 363 | readchar_count--; |
92fddec9 KH |
364 | if (c == -1) |
365 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
366 | since readchar didn't advance it when we read it. */ | |
367 | ; | |
cfff016d | 368 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 369 | { |
bed23cb2 RS |
370 | struct buffer *b = XBUFFER (readcharfun); |
371 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 372 | |
00a9a935 RS |
373 | if (readchar_backlog >= 0) |
374 | readchar_backlog++; | |
bed23cb2 | 375 | else |
00a9a935 RS |
376 | { |
377 | BUF_PT (b)--; | |
378 | if (! NILP (b->enable_multibyte_characters)) | |
379 | BUF_DEC_POS (b, bytepos); | |
380 | else | |
381 | bytepos--; | |
d7760ca9 | 382 | |
00a9a935 RS |
383 | BUF_PT_BYTE (b) = bytepos; |
384 | } | |
d7760ca9 | 385 | } |
cfff016d | 386 | else if (MARKERP (readcharfun)) |
d7760ca9 | 387 | { |
bed23cb2 RS |
388 | struct buffer *b = XMARKER (readcharfun)->buffer; |
389 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 390 | |
00a9a935 RS |
391 | if (readchar_backlog >= 0) |
392 | readchar_backlog++; | |
bed23cb2 | 393 | else |
00a9a935 RS |
394 | { |
395 | XMARKER (readcharfun)->charpos--; | |
396 | if (! NILP (b->enable_multibyte_characters)) | |
397 | BUF_DEC_POS (b, bytepos); | |
398 | else | |
399 | bytepos--; | |
d7760ca9 | 400 | |
00a9a935 RS |
401 | XMARKER (readcharfun)->bytepos = bytepos; |
402 | } | |
d7760ca9 | 403 | } |
cfff016d | 404 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
405 | { |
406 | read_from_string_index--; | |
407 | read_from_string_index_byte | |
408 | = string_char_to_byte (readcharfun, read_from_string_index); | |
409 | } | |
ad0153e4 RS |
410 | else if (EQ (readcharfun, Qlambda)) |
411 | read_bytecode_char (1); | |
078e7b4a JB |
412 | else if (EQ (readcharfun, Qget_file_char)) |
413 | ungetc (c, instream); | |
414 | else | |
415 | call1 (readcharfun, make_number (c)); | |
416 | } | |
417 | ||
abb13b09 CW |
418 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
419 | Lisp_Object)); | |
420 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 421 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
422 | |
423 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
424 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
425 | static int read_multibyte P_ ((int, Lisp_Object)); | |
426 | ||
427 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
428 | Lisp_Object)); | |
429 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
430 | Lisp_Object)); | |
431 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 432 | |
078e7b4a | 433 | \f |
bed23cb2 | 434 | /* Get a character from the tty. */ |
078e7b4a | 435 | |
3d9b22be JB |
436 | extern Lisp_Object read_char (); |
437 | ||
f42be754 JB |
438 | /* Read input events until we get one that's acceptable for our purposes. |
439 | ||
440 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
441 | until we get a character we like, and then stuffed into | |
442 | unread_switch_frame. | |
443 | ||
444 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
445 | if the unmodified version of the symbol has a Qascii_character | |
446 | property, and use that character, if present. | |
447 | ||
448 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
449 | get isn't an ASCII character with modifiers. If it's zero but | |
450 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
451 | character. |
452 | ||
453 | If INPUT_METHOD is nonzero, we invoke the current input method | |
454 | if the character warrants that. */ | |
cc39bc38 | 455 | |
f42be754 | 456 | Lisp_Object |
bb49a192 RS |
457 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
458 | input_method) | |
459 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 460 | { |
153a17b7 KH |
461 | register Lisp_Object val, delayed_switch_frame; |
462 | ||
5dbf89bc | 463 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
464 | if (display_hourglass_p) |
465 | cancel_hourglass (); | |
5dbf89bc | 466 | #endif |
177c0ea7 | 467 | |
153a17b7 | 468 | delayed_switch_frame = Qnil; |
f42be754 JB |
469 | |
470 | /* Read until we get an acceptable event. */ | |
471 | retry: | |
bb49a192 RS |
472 | val = read_char (0, 0, 0, |
473 | (input_method ? Qnil : Qt), | |
474 | 0); | |
f42be754 | 475 | |
cfff016d | 476 | if (BUFFERP (val)) |
6c82d689 KH |
477 | goto retry; |
478 | ||
f42be754 | 479 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 480 | character. This is better than signaling an error just because |
f42be754 JB |
481 | the last characters were typed to a separate minibuffer frame, |
482 | for example. Eventually, some code which can deal with | |
483 | switch-frame events will read it and process it. */ | |
484 | if (no_switch_frame | |
485 | && EVENT_HAS_PARAMETERS (val) | |
486 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
487 | { | |
488 | delayed_switch_frame = val; | |
489 | goto retry; | |
490 | } | |
491 | ||
492 | if (ascii_required) | |
493 | { | |
494 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 495 | if (SYMBOLP (val)) |
f42be754 | 496 | { |
95384e1e | 497 | Lisp_Object tem, tem1; |
f42be754 JB |
498 | tem = Fget (val, Qevent_symbol_element_mask); |
499 | if (!NILP (tem)) | |
500 | { | |
501 | tem1 = Fget (Fcar (tem), Qascii_character); | |
502 | /* Merge this symbol's modifier bits | |
503 | with the ASCII equivalent of its basic code. */ | |
504 | if (!NILP (tem1)) | |
baf69866 | 505 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
506 | } |
507 | } | |
177c0ea7 | 508 | |
f42be754 | 509 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 510 | if (!INTEGERP (val)) |
f42be754 JB |
511 | { |
512 | if (error_nonascii) | |
513 | { | |
1ec84625 | 514 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
515 | error ("Non-character input-event"); |
516 | } | |
517 | else | |
518 | goto retry; | |
519 | } | |
520 | } | |
521 | ||
522 | if (! NILP (delayed_switch_frame)) | |
523 | unread_switch_frame = delayed_switch_frame; | |
524 | ||
67868d27 PJ |
525 | #if 0 |
526 | ||
5dbf89bc | 527 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
528 | if (display_hourglass_p) |
529 | start_hourglass (); | |
5dbf89bc | 530 | #endif |
67868d27 PJ |
531 | |
532 | #endif | |
533 | ||
f42be754 | 534 | return val; |
f42be754 JB |
535 | } |
536 | ||
bb49a192 | 537 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
5de38842 PJ |
538 | doc: /* Read a character from the command input (keyboard or macro). |
539 | It is returned as a number. | |
540 | If the user generates an event which is not a character (i.e. a mouse | |
541 | click or function key event), `read-char' signals an error. As an | |
542 | exception, switch-frame events are put off until non-ASCII events can | |
543 | be read. | |
544 | If you want to read non-character events, or ignore them, call | |
545 | `read-event' or `read-char-exclusive' instead. | |
546 | ||
547 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
548 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
549 | input method is turned on in the current buffer, that input method | |
550 | is used for reading a character. */) | |
551 | (prompt, inherit_input_method) | |
fc351d2f | 552 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 553 | { |
bb49a192 RS |
554 | if (! NILP (prompt)) |
555 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 556 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
557 | } |
558 | ||
bb49a192 | 559 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
5de38842 PJ |
560 | doc: /* Read an event object from the input stream. |
561 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
562 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
563 | input method is turned on in the current buffer, that input method | |
564 | is used for reading a character. */) | |
565 | (prompt, inherit_input_method) | |
fc351d2f | 566 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 567 | { |
bb49a192 RS |
568 | if (! NILP (prompt)) |
569 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 570 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
571 | } |
572 | ||
bb49a192 | 573 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
5de38842 PJ |
574 | doc: /* Read a character from the command input (keyboard or macro). |
575 | It is returned as a number. Non-character events are ignored. | |
576 | ||
577 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
578 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
579 | input method is turned on in the current buffer, that input method | |
580 | is used for reading a character. */) | |
581 | (prompt, inherit_input_method) | |
fc351d2f | 582 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 583 | { |
bb49a192 RS |
584 | if (! NILP (prompt)) |
585 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 586 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 587 | } |
078e7b4a JB |
588 | |
589 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
590 | doc: /* Don't use this yourself. */) |
591 | () | |
078e7b4a JB |
592 | { |
593 | register Lisp_Object val; | |
1805de4f | 594 | XSETINT (val, getc (instream)); |
078e7b4a JB |
595 | return val; |
596 | } | |
da84f340 GM |
597 | |
598 | ||
550a625e | 599 | \f |
da84f340 GM |
600 | /* Value is non-zero if the file asswociated with file descriptor FD |
601 | is a compiled Lisp file that's safe to load. Only files compiled | |
602 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
603 | to a crash in Fbyte_code because of an incompatible change in the | |
604 | byte compiler. */ | |
605 | ||
606 | static int | |
607 | safe_to_load_p (fd) | |
608 | int fd; | |
609 | { | |
610 | char buf[512]; | |
611 | int nbytes, i; | |
612 | int safe_p = 1; | |
613 | ||
614 | /* Read the first few bytes from the file, and look for a line | |
615 | specifying the byte compiler version used. */ | |
616 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
617 | if (nbytes > 0) | |
618 | { | |
619 | buf[nbytes] = '\0'; | |
620 | ||
621 | /* Skip to the next newline, skipping over the initial `ELC' | |
622 | with NUL bytes following it. */ | |
623 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
624 | ; | |
625 | ||
626 | if (i < nbytes | |
627 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
628 | buf + i) < 0) | |
629 | safe_p = 0; | |
630 | } | |
631 | ||
632 | lseek (fd, 0, SEEK_SET); | |
633 | return safe_p; | |
634 | } | |
635 | ||
636 | ||
7ee3bd7b GM |
637 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
638 | after loading a file successfully. */ | |
639 | ||
640 | static Lisp_Object | |
641 | record_load_unwind (old) | |
642 | Lisp_Object old; | |
643 | { | |
644 | return Vloads_in_progress = old; | |
645 | } | |
646 | ||
164c8bfe RS |
647 | /* This handler function is used via internal_condition_case_1. */ |
648 | ||
649 | static Lisp_Object | |
650 | load_error_handler (data) | |
651 | Lisp_Object data; | |
652 | { | |
653 | return Qnil; | |
654 | } | |
7ee3bd7b | 655 | |
f0a50954 | 656 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
657 | doc: /* Execute a file of Lisp code named FILE. |
658 | First try FILE with `.elc' appended, then try with `.el', | |
d77b70e5 MR |
659 | then try FILE unmodified (the exact suffixes are determined by |
660 | `load-suffixes'). Environment variable references in FILE | |
5de38842 PJ |
661 | are replaced with their values by calling `substitute-in-file-name'. |
662 | This function searches the directories in `load-path'. | |
663 | If optional second arg NOERROR is non-nil, | |
664 | report no error if FILE doesn't exist. | |
665 | Print messages at start and end of loading unless | |
666 | optional third arg NOMESSAGE is non-nil. | |
667 | If optional fourth arg NOSUFFIX is non-nil, don't try adding | |
668 | suffixes `.elc' or `.el' to the specified name FILE. | |
669 | If optional fifth arg MUST-SUFFIX is non-nil, insist on | |
670 | the suffix `.elc' or `.el'; don't accept just FILE unless | |
671 | it ends in one of those suffixes or includes a directory name. | |
0fc213e9 RS |
672 | |
673 | Loading a file records its definitions, and its `provide' and | |
674 | `require' calls, in an element of `load-history' whose | |
675 | car is the file name loaded. See `load-history'. | |
676 | ||
5de38842 PJ |
677 | Return t if file exists. */) |
678 | (file, noerror, nomessage, nosuffix, must_suffix) | |
f0a50954 | 679 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
680 | { |
681 | register FILE *stream; | |
682 | register int fd = -1; | |
aed13378 | 683 | int count = SPECPDL_INDEX (); |
078e7b4a | 684 | Lisp_Object temp; |
0fc213e9 | 685 | struct gcpro gcpro1, gcpro2; |
eb191db2 | 686 | Lisp_Object found, efound; |
04fc68e7 RS |
687 | /* 1 means we printed the ".el is newer" message. */ |
688 | int newer = 0; | |
689 | /* 1 means we are loading a compiled file. */ | |
690 | int compiled = 0; | |
c2225d00 | 691 | Lisp_Object handler; |
456c67a4 | 692 | int safe_p = 1; |
229ba775 | 693 | char *fmode = "r"; |
317073d5 | 694 | #ifdef DOS_NT |
229ba775 | 695 | fmode = "rt"; |
317073d5 | 696 | #endif /* DOS_NT */ |
078e7b4a | 697 | |
b7826503 | 698 | CHECK_STRING (file); |
078e7b4a | 699 | |
c2225d00 | 700 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
701 | /* This shouldn't be necessary any more now that `openp' handles it right. |
702 | handler = Ffind_file_name_handler (file, Qload); | |
703 | if (!NILP (handler)) | |
704 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 705 | |
07a0bda3 RS |
706 | /* Do this after the handler to avoid |
707 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
708 | (Below here, we care only whether they are nil or not.) |
709 | The presence of this call is the result of a historical accident: | |
710 | it used to be in every file-operations and when it got removed | |
711 | everywhere, it accidentally stayed here. Since then, enough people | |
712 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
713 | that it seemed risky to remove. */ | |
164c8bfe RS |
714 | if (! NILP (noerror)) |
715 | { | |
716 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
717 | Qt, load_error_handler); | |
718 | if (NILP (file)) | |
719 | return Qnil; | |
720 | } | |
721 | else | |
722 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 723 | |
07a0bda3 | 724 | |
078e7b4a JB |
725 | /* Avoid weird lossage with null string as arg, |
726 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 727 | if (SCHARS (file) > 0) |
078e7b4a | 728 | { |
d5db4077 | 729 | int size = SBYTES (file); |
e61b9b87 | 730 | Lisp_Object tmp[2]; |
211f7dcd | 731 | |
0fc213e9 RS |
732 | found = Qnil; |
733 | GCPRO2 (file, found); | |
211f7dcd RS |
734 | |
735 | if (! NILP (must_suffix)) | |
736 | { | |
737 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
738 | if (size > 3 | |
d5db4077 | 739 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
740 | must_suffix = Qnil; |
741 | else if (size > 4 | |
d5db4077 | 742 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
743 | must_suffix = Qnil; |
744 | /* Don't insist on adding a suffix | |
745 | if the argument includes a directory name. */ | |
746 | else if (! NILP (Ffile_name_directory (file))) | |
747 | must_suffix = Qnil; | |
748 | } | |
749 | ||
f0a50954 | 750 | fd = openp (Vload_path, file, |
e61b9b87 SM |
751 | (!NILP (nosuffix) ? Qnil |
752 | : !NILP (must_suffix) ? Vload_suffixes | |
753 | : Fappend (2, (tmp[0] = Vload_suffixes, | |
754 | tmp[1] = default_suffixes, | |
755 | tmp))), | |
86d00812 | 756 | &found, Qnil); |
5a6e5452 | 757 | UNGCPRO; |
078e7b4a JB |
758 | } |
759 | ||
96dc0f4e | 760 | if (fd == -1) |
078e7b4a | 761 | { |
265a9e55 | 762 | if (NILP (noerror)) |
164c8bfe RS |
763 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), |
764 | Fcons (file, Qnil))); | |
078e7b4a JB |
765 | else |
766 | return Qnil; | |
767 | } | |
768 | ||
ba0d1195 | 769 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
770 | if (EQ (Qt, Vuser_init_file)) |
771 | Vuser_init_file = found; | |
772 | ||
96dc0f4e MB |
773 | /* If FD is -2, that means openp found a magic file. */ |
774 | if (fd == -2) | |
74549846 | 775 | { |
5e24a1f7 KH |
776 | if (NILP (Fequal (found, file))) |
777 | /* If FOUND is a different file name from FILE, | |
778 | find its handler even if we have already inhibited | |
779 | the `load' operation on FILE. */ | |
780 | handler = Ffind_file_name_handler (found, Qt); | |
781 | else | |
782 | handler = Ffind_file_name_handler (found, Qload); | |
783 | if (! NILP (handler)) | |
784 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
785 | } |
786 | ||
550a625e GM |
787 | /* Check if we're stuck in a recursive load cycle. |
788 | ||
789 | 2000-09-21: It's not possible to just check for the file loaded | |
790 | being a member of Vloads_in_progress. This fails because of the | |
791 | way the byte compiler currently works; `provide's are not | |
792 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
793 | leads to a certain amount of ``normal'' recursion. | |
794 | ||
795 | Also, just loading a file recursively is not always an error in | |
796 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
797 | { |
798 | int count = 0; | |
799 | Lisp_Object tem; | |
800 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
801 | if (!NILP (Fequal (found, XCAR (tem)))) | |
802 | count++; | |
803 | if (count > 3) | |
3fdf12ca EZ |
804 | { |
805 | if (fd >= 0) | |
806 | emacs_close (fd); | |
807 | Fsignal (Qerror, Fcons (build_string ("Recursive load"), | |
808 | Fcons (found, Vloads_in_progress))); | |
809 | } | |
3ba6fd9a RS |
810 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
811 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
812 | } | |
7ee3bd7b | 813 | |
a1c89c0a | 814 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
815 | ".elc", 4)) |
816 | /* Load .elc files directly, but not when they are | |
817 | remote and have no handler! */ | |
078e7b4a | 818 | { |
96dc0f4e | 819 | if (fd != -2) |
da84f340 | 820 | { |
96dc0f4e MB |
821 | struct stat s1, s2; |
822 | int result; | |
da84f340 | 823 | |
0fc213e9 RS |
824 | GCPRO2 (file, found); |
825 | ||
96dc0f4e MB |
826 | if (!safe_to_load_p (fd)) |
827 | { | |
828 | safe_p = 0; | |
829 | if (!load_dangerous_libraries) | |
e63304b7 DL |
830 | { |
831 | if (fd >= 0) | |
832 | emacs_close (fd); | |
833 | error ("File `%s' was not compiled in Emacs", | |
834 | SDATA (found)); | |
835 | } | |
96dc0f4e MB |
836 | else if (!NILP (nomessage)) |
837 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
838 | } | |
04fc68e7 | 839 | |
96dc0f4e MB |
840 | compiled = 1; |
841 | ||
eb191db2 EZ |
842 | efound = ENCODE_FILE (found); |
843 | ||
26fbf20b | 844 | #ifdef DOS_NT |
96dc0f4e | 845 | fmode = "rb"; |
26fbf20b | 846 | #endif /* DOS_NT */ |
d5db4077 | 847 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 848 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 849 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 850 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 851 | |
96dc0f4e MB |
852 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
853 | { | |
854 | /* Make the progress messages mention that source is newer. */ | |
855 | newer = 1; | |
04fc68e7 | 856 | |
96dc0f4e | 857 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
858 | if (!NILP (nomessage)) |
859 | { | |
0fc213e9 RS |
860 | Lisp_Object msg_file; |
861 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 862 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 863 | msg_file, 1); |
714d8c39 | 864 | } |
96dc0f4e | 865 | } |
0fc213e9 | 866 | UNGCPRO; |
51ac6f83 | 867 | } |
078e7b4a | 868 | } |
fe0e03f3 KH |
869 | else |
870 | { | |
871 | /* We are loading a source file (*.el). */ | |
872 | if (!NILP (Vload_source_file_function)) | |
873 | { | |
7ee3bd7b | 874 | Lisp_Object val; |
96dc0f4e MB |
875 | |
876 | if (fd >= 0) | |
68c45bf0 | 877 | emacs_close (fd); |
7ee3bd7b GM |
878 | val = call4 (Vload_source_file_function, found, file, |
879 | NILP (noerror) ? Qnil : Qt, | |
880 | NILP (nomessage) ? Qnil : Qt); | |
881 | return unbind_to (count, val); | |
fe0e03f3 KH |
882 | } |
883 | } | |
078e7b4a | 884 | |
0fc213e9 RS |
885 | GCPRO2 (file, found); |
886 | ||
229ba775 | 887 | #ifdef WINDOWSNT |
68c45bf0 | 888 | emacs_close (fd); |
eb191db2 | 889 | efound = ENCODE_FILE (found); |
d5db4077 | 890 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
891 | #else /* not WINDOWSNT */ |
892 | stream = fdopen (fd, fmode); | |
893 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
894 | if (stream == 0) |
895 | { | |
68c45bf0 | 896 | emacs_close (fd); |
d5db4077 | 897 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
898 | } |
899 | ||
4b104c41 RS |
900 | if (! NILP (Vpurify_flag)) |
901 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
902 | ||
04fc68e7 RS |
903 | if (NILP (nomessage)) |
904 | { | |
da84f340 GM |
905 | if (!safe_p) |
906 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
907 | file, 1); | |
908 | else if (!compiled) | |
e28552a4 | 909 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 910 | else if (newer) |
e28552a4 RS |
911 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
912 | file, 1); | |
db5cae4b | 913 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 914 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 915 | } |
078e7b4a | 916 | |
c04d9e70 | 917 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 918 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 919 | specbind (Qload_file_name, found); |
74549846 | 920 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
921 | load_descriptor_list |
922 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 923 | load_in_progress++; |
0fc213e9 RS |
924 | readevalloop (Qget_file_char, stream, (! NILP (Vpurify_flag) ? file : found), |
925 | Feval, 0, Qnil, Qnil, Qnil, Qnil); | |
078e7b4a JB |
926 | unbind_to (count, Qnil); |
927 | ||
928 | /* Run any load-hooks for this file. */ | |
0745dce9 | 929 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 930 | if (!NILP (temp)) |
078e7b4a JB |
931 | Fprogn (Fcdr (temp)); |
932 | UNGCPRO; | |
933 | ||
b2a30870 RS |
934 | if (saved_doc_string) |
935 | free (saved_doc_string); | |
936 | saved_doc_string = 0; | |
937 | saved_doc_string_size = 0; | |
938 | ||
c15cfd1f | 939 | if (prev_saved_doc_string) |
3cb65b0e | 940 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
941 | prev_saved_doc_string = 0; |
942 | prev_saved_doc_string_size = 0; | |
943 | ||
265a9e55 | 944 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 945 | { |
da84f340 GM |
946 | if (!safe_p) |
947 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
948 | file, 1); | |
949 | else if (!compiled) | |
e28552a4 | 950 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 951 | else if (newer) |
e28552a4 RS |
952 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
953 | file, 1); | |
db5cae4b | 954 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 955 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 956 | } |
7ee3bd7b | 957 | |
11810d78 SM |
958 | if (!NILP (Fequal (build_string ("obsolete"), |
959 | Ffile_name_nondirectory | |
960 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
961 | message_with_string ("Package %s is obsolete", file, 1); | |
962 | ||
078e7b4a JB |
963 | return Qt; |
964 | } | |
965 | ||
966 | static Lisp_Object | |
ebfe97a2 KS |
967 | load_unwind (arg) /* used as unwind-protect function in load */ |
968 | Lisp_Object arg; | |
078e7b4a | 969 | { |
ebfe97a2 KS |
970 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
971 | if (stream != NULL) | |
972 | fclose (stream); | |
078e7b4a JB |
973 | if (--load_in_progress < 0) load_in_progress = 0; |
974 | return Qnil; | |
975 | } | |
976 | ||
d2c6be7f RS |
977 | static Lisp_Object |
978 | load_descriptor_unwind (oldlist) | |
979 | Lisp_Object oldlist; | |
980 | { | |
981 | load_descriptor_list = oldlist; | |
838abf56 | 982 | return Qnil; |
d2c6be7f RS |
983 | } |
984 | ||
985 | /* Close all descriptors in use for Floads. | |
986 | This is used when starting a subprocess. */ | |
987 | ||
988 | void | |
989 | close_load_descs () | |
990 | { | |
f3849f25 | 991 | #ifndef WINDOWSNT |
d2c6be7f | 992 | Lisp_Object tail; |
c1d497be | 993 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 994 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 995 | #endif |
d2c6be7f | 996 | } |
078e7b4a JB |
997 | \f |
998 | static int | |
999 | complete_filename_p (pathname) | |
1000 | Lisp_Object pathname; | |
1001 | { | |
4b2dd274 | 1002 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1003 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1004 | || (SCHARS (pathname) > 2 |
317073d5 | 1005 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1006 | #ifdef ALTOS |
1007 | || *s == '@' | |
1008 | #endif | |
1009 | #ifdef VMS | |
1010 | || index (s, ':') | |
1011 | #endif /* VMS */ | |
1012 | ); | |
1013 | } | |
1014 | ||
86d00812 SM |
1015 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1016 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1017 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1018 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1019 | file name when searching. | |
1020 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1021 | PREDICATE can also be an integer to pass to the access(2) function, | |
1022 | in which case file-name-handlers are ignored. */) | |
1023 | (filename, path, suffixes, predicate) | |
1024 | Lisp_Object filename, path, suffixes, predicate; | |
1025 | { | |
1026 | Lisp_Object file; | |
1027 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1028 | if (NILP (predicate) && fd > 0) | |
1029 | close (fd); | |
1030 | return file; | |
1031 | } | |
1032 | ||
1033 | ||
078e7b4a JB |
1034 | /* Search for a file whose name is STR, looking in directories |
1035 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1036 | On success, returns a file descriptor. On failure, returns -1. |
1037 | ||
e61b9b87 SM |
1038 | SUFFIXES is a list of strings containing possible suffixes. |
1039 | The empty suffix is automatically added iff the list is empty. | |
1040 | ||
86d00812 SM |
1041 | PREDICATE non-nil means don't open the files, |
1042 | just look for one that satisfies the predicate. In this case, | |
1043 | returns 1 on success. The predicate can be a lisp function or | |
1044 | an integer to pass to `access' (in which case file-name-handlers | |
1045 | are ignored). | |
078e7b4a JB |
1046 | |
1047 | If STOREPTR is nonzero, it points to a slot where the name of | |
1048 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1049 | nil is stored there on failure. |
1050 | ||
96dc0f4e | 1051 | If the file we find is remote, return -2 |
86d00812 | 1052 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1053 | |
1054 | int | |
86d00812 | 1055 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1056 | Lisp_Object path, str; |
e61b9b87 | 1057 | Lisp_Object suffixes; |
078e7b4a | 1058 | Lisp_Object *storeptr; |
86d00812 | 1059 | Lisp_Object predicate; |
078e7b4a JB |
1060 | { |
1061 | register int fd; | |
1062 | int fn_size = 100; | |
1063 | char buf[100]; | |
1064 | register char *fn = buf; | |
1065 | int absolute = 0; | |
1066 | int want_size; | |
74549846 | 1067 | Lisp_Object filename; |
078e7b4a | 1068 | struct stat st; |
eb191db2 EZ |
1069 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1070 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1071 | int max_suffix_len = 0; |
1072 | ||
6f8eafd1 SM |
1073 | CHECK_STRING (str); |
1074 | ||
e61b9b87 SM |
1075 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1076 | { | |
f5df591a | 1077 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1078 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1079 | SBYTES (XCAR (tail))); |
e61b9b87 | 1080 | } |
078e7b4a | 1081 | |
8b9d426a | 1082 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1083 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1084 | ||
078e7b4a JB |
1085 | if (storeptr) |
1086 | *storeptr = Qnil; | |
1087 | ||
1088 | if (complete_filename_p (str)) | |
1089 | absolute = 1; | |
1090 | ||
e61b9b87 | 1091 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1092 | { |
e61b9b87 | 1093 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1094 | if (!complete_filename_p (filename)) |
1095 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1096 | /* Of course, this could conceivably lose if luser sets | |
1097 | default-directory to be something non-absolute... */ | |
1098 | { | |
1099 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1100 | if (!complete_filename_p (filename)) | |
1101 | /* Give up on this path element! */ | |
1102 | continue; | |
1103 | } | |
1104 | ||
1105 | /* Calculate maximum size of any filename made from | |
1106 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1107 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1108 | if (fn_size < want_size) |
1109 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1110 | ||
078e7b4a | 1111 | /* Loop over suffixes. */ |
e61b9b87 SM |
1112 | for (tail = NILP (suffixes) ? default_suffixes : suffixes; |
1113 | CONSP (tail); tail = XCDR (tail)) | |
078e7b4a | 1114 | { |
d5db4077 | 1115 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1116 | Lisp_Object handler; |
eb191db2 | 1117 | int exists; |
078e7b4a | 1118 | |
c49afcd7 RS |
1119 | /* Concatenate path element/specified name with the suffix. |
1120 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1121 | if (SCHARS (filename) > 2 |
1122 | && SREF (filename, 0) == '/' | |
1123 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1124 | { |
d5db4077 KR |
1125 | strncpy (fn, SDATA (filename) + 2, |
1126 | SBYTES (filename) - 2); | |
1127 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1128 | } |
1129 | else | |
1130 | { | |
d5db4077 KR |
1131 | strncpy (fn, SDATA (filename), |
1132 | SBYTES (filename)); | |
1133 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1134 | } |
1135 | ||
078e7b4a | 1136 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1137 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1138 | |
74549846 | 1139 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1140 | /* We used to only check for handlers on non-absolute file names: |
1141 | if (absolute) | |
1142 | handler = Qnil; | |
1143 | else | |
1144 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1145 | It's not clear why that was the case and it breaks things like | |
1146 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1147 | string = build_string (fn); |
4773b8ca | 1148 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1149 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1150 | { | |
1151 | if (NILP (predicate)) | |
1152 | exists = !NILP (Ffile_readable_p (string)); | |
1153 | else | |
1154 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1155 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1156 | exists = 0; |
1157 | ||
1158 | if (exists) | |
078e7b4a JB |
1159 | { |
1160 | /* We succeeded; return this descriptor and filename. */ | |
1161 | if (storeptr) | |
eb191db2 | 1162 | *storeptr = string; |
5ef2a3c0 | 1163 | UNGCPRO; |
96dc0f4e | 1164 | return -2; |
74549846 RS |
1165 | } |
1166 | } | |
1167 | else | |
1168 | { | |
4b2dd274 | 1169 | const char *pfn; |
eb191db2 EZ |
1170 | |
1171 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1172 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1173 | exists = (stat (pfn, &st) >= 0 |
1174 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1175 | if (exists) |
1176 | { | |
1177 | /* Check that we can access or open it. */ | |
86d00812 SM |
1178 | if (NATNUMP (predicate)) |
1179 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1180 | else |
eb191db2 | 1181 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1182 | |
1183 | if (fd >= 0) | |
1184 | { | |
1185 | /* We succeeded; return this descriptor and filename. */ | |
1186 | if (storeptr) | |
eb191db2 | 1187 | *storeptr = string; |
74549846 RS |
1188 | UNGCPRO; |
1189 | return fd; | |
1190 | } | |
078e7b4a JB |
1191 | } |
1192 | } | |
078e7b4a | 1193 | } |
5a6e5452 | 1194 | if (absolute) |
5ef2a3c0 | 1195 | break; |
078e7b4a JB |
1196 | } |
1197 | ||
5ef2a3c0 KH |
1198 | UNGCPRO; |
1199 | return -1; | |
078e7b4a JB |
1200 | } |
1201 | ||
1202 | \f | |
ae321d28 RS |
1203 | /* Merge the list we've accumulated of globals from the current input source |
1204 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1205 | the source has an associated file name or not. |
1206 | ||
1207 | FILENAME is the file name that we are loading from. | |
1208 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1209 | |
1210 | static void | |
b502a9a1 RS |
1211 | build_load_history (filename, entire) |
1212 | Lisp_Object filename; | |
1213 | int entire; | |
ae321d28 RS |
1214 | { |
1215 | register Lisp_Object tail, prev, newelt; | |
1216 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1217 | register int foundit = 0; |
ae321d28 RS |
1218 | |
1219 | tail = Vload_history; | |
1220 | prev = Qnil; | |
b502a9a1 | 1221 | |
86d00812 | 1222 | while (CONSP (tail)) |
ae321d28 | 1223 | { |
86d00812 | 1224 | tem = XCAR (tail); |
ae321d28 RS |
1225 | |
1226 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1227 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1228 | { |
1229 | foundit = 1; | |
1230 | ||
b502a9a1 RS |
1231 | /* If we're loading the entire file, remove old data. */ |
1232 | if (entire) | |
86d00812 | 1233 | { |
ae321d28 | 1234 | if (NILP (prev)) |
86d00812 | 1235 | Vload_history = XCDR (tail); |
ae321d28 | 1236 | else |
86d00812 | 1237 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1238 | } |
1239 | ||
1240 | /* Otherwise, cons on new symbols that are not already members. */ | |
1241 | else | |
1242 | { | |
1243 | tem2 = Vcurrent_load_list; | |
1244 | ||
1245 | while (CONSP (tem2)) | |
1246 | { | |
86d00812 | 1247 | newelt = XCAR (tem2); |
ae321d28 | 1248 | |
d642e4f9 | 1249 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1250 | Fsetcar (tail, Fcons (XCAR (tem), |
1251 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1252 | |
86d00812 | 1253 | tem2 = XCDR (tem2); |
ae321d28 RS |
1254 | QUIT; |
1255 | } | |
1256 | } | |
1257 | } | |
1258 | else | |
1259 | prev = tail; | |
86d00812 | 1260 | tail = XCDR (tail); |
ae321d28 RS |
1261 | QUIT; |
1262 | } | |
1263 | ||
b502a9a1 RS |
1264 | /* If we're loading an entire file, cons the new assoc onto the |
1265 | front of load-history, the most-recently-loaded position. Also | |
1266 | do this if we didn't find an existing member for the file. */ | |
1267 | if (entire || !foundit) | |
8a1f1537 RS |
1268 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1269 | Vload_history); | |
ae321d28 RS |
1270 | } |
1271 | ||
078e7b4a | 1272 | Lisp_Object |
232ccf27 DL |
1273 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1274 | Lisp_Object junk; | |
078e7b4a JB |
1275 | { |
1276 | read_pure = 0; | |
1277 | return Qnil; | |
1278 | } | |
1279 | ||
94e554db RS |
1280 | static Lisp_Object |
1281 | readevalloop_1 (old) | |
1282 | Lisp_Object old; | |
1283 | { | |
1284 | load_convert_to_unibyte = ! NILP (old); | |
1285 | return Qnil; | |
1286 | } | |
1287 | ||
9c97398c GM |
1288 | /* Signal an `end-of-file' error, if possible with file name |
1289 | information. */ | |
1290 | ||
1291 | static void | |
1292 | end_of_file_error () | |
1293 | { | |
1294 | Lisp_Object data; | |
1295 | ||
1296 | if (STRINGP (Vload_file_name)) | |
1297 | data = Fcons (Vload_file_name, Qnil); | |
1298 | else | |
1299 | data = Qnil; | |
1300 | ||
1301 | Fsignal (Qend_of_file, data); | |
1302 | } | |
1303 | ||
94e554db | 1304 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1305 | for this invocation. |
4c03c46d KS |
1306 | READFUN, if non-nil, is used instead of `read'. |
1307 | START, END is region in current buffer (from eval-region). */ | |
94e554db | 1308 | |
078e7b4a | 1309 | static void |
4c03c46d KS |
1310 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1311 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1312 | Lisp_Object readcharfun; |
ae321d28 RS |
1313 | FILE *stream; |
1314 | Lisp_Object sourcename; | |
078e7b4a JB |
1315 | Lisp_Object (*evalfun) (); |
1316 | int printflag; | |
976350af | 1317 | Lisp_Object unibyte, readfun; |
4c03c46d | 1318 | Lisp_Object start, end; |
078e7b4a JB |
1319 | { |
1320 | register int c; | |
1321 | register Lisp_Object val; | |
aed13378 | 1322 | int count = SPECPDL_INDEX (); |
0a37f512 | 1323 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1324 | struct buffer *b = 0; |
d11db2c8 | 1325 | int bpos; |
f38952fe | 1326 | int continue_reading_p; |
d11db2c8 RS |
1327 | /* Nonzero if reading an entire buffer. */ |
1328 | int whole_buffer = 0; | |
1329 | /* 1 on the first time around. */ | |
1330 | int first_sexp = 1; | |
1331 | ||
1332 | if (MARKERP (readcharfun)) | |
1333 | { | |
1334 | if (NILP (start)) | |
1335 | start = readcharfun; | |
1336 | } | |
49cf7ff4 RS |
1337 | |
1338 | if (BUFFERP (readcharfun)) | |
1339 | b = XBUFFER (readcharfun); | |
1340 | else if (MARKERP (readcharfun)) | |
1341 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1342 | |
0a37f512 | 1343 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1344 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1345 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1346 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1347 | |
00a9a935 | 1348 | readchar_backlog = -1; |
6f7f43d5 | 1349 | |
0a37f512 | 1350 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1351 | |
ae321d28 RS |
1352 | LOADHIST_ATTACH (sourcename); |
1353 | ||
f38952fe GM |
1354 | continue_reading_p = 1; |
1355 | while (continue_reading_p) | |
078e7b4a | 1356 | { |
4c03c46d KS |
1357 | int count1 = SPECPDL_INDEX (); |
1358 | ||
49cf7ff4 RS |
1359 | if (b != 0 && NILP (b->name)) |
1360 | error ("Reading from killed buffer"); | |
1361 | ||
4c03c46d KS |
1362 | if (!NILP (start)) |
1363 | { | |
721b7d9e RS |
1364 | /* Switch to the buffer we are reading from. */ |
1365 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1366 | set_buffer_internal (b); | |
1367 | ||
1368 | /* Save point in it. */ | |
4c03c46d | 1369 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1370 | /* Save ZV in it. */ |
4c03c46d | 1371 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1372 | /* Those get unbound after we read one expression. */ |
1373 | ||
1374 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1375 | Fgoto_char (start); |
d11db2c8 RS |
1376 | if (!NILP (end)) |
1377 | Fnarrow_to_region (make_number (BEGV), end); | |
1378 | ||
1379 | /* Just for cleanliness, convert END to a marker | |
1380 | if it is an integer. */ | |
1381 | if (INTEGERP (end)) | |
1382 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1383 | } |
1384 | ||
d11db2c8 RS |
1385 | /* On the first cycle, we can easily test here |
1386 | whether we are reading the whole buffer. */ | |
1387 | if (b && first_sexp) | |
1388 | whole_buffer = (PT == BEG && ZV == Z); | |
1389 | ||
078e7b4a | 1390 | instream = stream; |
4c03c46d | 1391 | read_next: |
078e7b4a JB |
1392 | c = READCHAR; |
1393 | if (c == ';') | |
1394 | { | |
1395 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1396 | goto read_next; |
1397 | } | |
1398 | if (c < 0) | |
1399 | { | |
1400 | unbind_to (count1, Qnil); | |
1401 | break; | |
078e7b4a | 1402 | } |
6069d957 RS |
1403 | |
1404 | /* Ignore whitespace here, so we can detect eof. */ | |
1405 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1406 | goto read_next; |
078e7b4a | 1407 | |
265a9e55 | 1408 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1409 | { |
1410 | record_unwind_protect (unreadpure, Qnil); | |
1411 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1412 | } |
1413 | else | |
1414 | { | |
1415 | UNREAD (c); | |
4ad679f9 | 1416 | read_objects = Qnil; |
f38952fe GM |
1417 | if (!NILP (readfun)) |
1418 | { | |
1419 | val = call1 (readfun, readcharfun); | |
1420 | ||
1421 | /* If READCHARFUN has set point to ZV, we should | |
1422 | stop reading, even if the form read sets point | |
1423 | to a different value when evaluated. */ | |
1424 | if (BUFFERP (readcharfun)) | |
1425 | { | |
1426 | struct buffer *b = XBUFFER (readcharfun); | |
1427 | if (BUF_PT (b) == BUF_ZV (b)) | |
1428 | continue_reading_p = 0; | |
1429 | } | |
1430 | } | |
976350af | 1431 | else if (! NILP (Vload_read_function)) |
84a15045 | 1432 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1433 | else |
abb13b09 | 1434 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1435 | } |
1436 | ||
4c03c46d KS |
1437 | if (!NILP (start) && continue_reading_p) |
1438 | start = Fpoint_marker (); | |
d11db2c8 RS |
1439 | |
1440 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1441 | unbind_to (count1, Qnil); |
1442 | ||
d11db2c8 | 1443 | /* Now eval what we just read. */ |
078e7b4a | 1444 | val = (*evalfun) (val); |
f38952fe | 1445 | |
078e7b4a JB |
1446 | if (printflag) |
1447 | { | |
1448 | Vvalues = Fcons (val, Vvalues); | |
1449 | if (EQ (Vstandard_output, Qt)) | |
1450 | Fprin1 (val, Qnil); | |
1451 | else | |
1452 | Fprint (val, Qnil); | |
1453 | } | |
d11db2c8 RS |
1454 | |
1455 | first_sexp = 0; | |
078e7b4a JB |
1456 | } |
1457 | ||
b502a9a1 | 1458 | build_load_history (sourcename, |
d11db2c8 | 1459 | stream || whole_buffer); |
b502a9a1 | 1460 | |
ae321d28 RS |
1461 | UNGCPRO; |
1462 | ||
078e7b4a JB |
1463 | unbind_to (count, Qnil); |
1464 | } | |
1465 | ||
1076254d | 1466 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1467 | doc: /* Execute the current buffer as Lisp code. |
1468 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1469 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1470 | PRINTFLAG controls printing of output: | |
1471 | nil means discard it; anything else is stream for print. | |
1472 | ||
1473 | If the optional third argument FILENAME is non-nil, | |
1474 | it specifies the file name to use for `load-history'. | |
1475 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1476 | for this invocation. | |
1477 | ||
3f9ab804 | 1478 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1479 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1480 | ||
1481 | This function preserves the position of point. */) | |
1482 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1483 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1484 | { |
aed13378 | 1485 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1486 | Lisp_Object tem, buf; |
1487 | ||
9391b698 | 1488 | if (NILP (buffer)) |
228d4b1c JA |
1489 | buf = Fcurrent_buffer (); |
1490 | else | |
9391b698 | 1491 | buf = Fget_buffer (buffer); |
dfdb645c | 1492 | if (NILP (buf)) |
13febd85 | 1493 | error ("No such buffer"); |
228d4b1c | 1494 | |
1076254d | 1495 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1496 | tem = Qsymbolp; |
1497 | else | |
1498 | tem = printflag; | |
13febd85 RS |
1499 | |
1500 | if (NILP (filename)) | |
1501 | filename = XBUFFER (buf)->filename; | |
1502 | ||
3f39f996 | 1503 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1504 | specbind (Qstandard_output, tem); |
1505 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1506 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1507 | readevalloop (buf, 0, filename, Feval, |
1508 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1509 | unbind_to (count, Qnil); |
228d4b1c JA |
1510 | |
1511 | return Qnil; | |
1512 | } | |
1513 | ||
976350af | 1514 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1515 | doc: /* Execute the region as Lisp code. |
1516 | When called from programs, expects two arguments, | |
1517 | giving starting and ending indices in the current buffer | |
1518 | of the text to be executed. | |
1519 | Programs can pass third argument PRINTFLAG which controls output: | |
1520 | nil means discard it; anything else is stream for printing it. | |
1521 | Also the fourth argument READ-FUNCTION, if non-nil, is used | |
1522 | instead of `read' to read each expression. It gets one argument | |
1523 | which is the input stream for reading characters. | |
1524 | ||
1525 | This function does not move point. */) | |
1526 | (start, end, printflag, read_function) | |
976350af | 1527 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1528 | { |
aed13378 | 1529 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1530 | Lisp_Object tem, cbuf; |
1531 | ||
1532 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1533 | |
265a9e55 | 1534 | if (NILP (printflag)) |
078e7b4a JB |
1535 | tem = Qsymbolp; |
1536 | else | |
1537 | tem = printflag; | |
1538 | specbind (Qstandard_output, tem); | |
3f39f996 | 1539 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1540 | |
4c03c46d | 1541 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1542 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1543 | !NILP (printflag), Qnil, read_function, |
1544 | start, end); | |
078e7b4a JB |
1545 | |
1546 | return unbind_to (count, Qnil); | |
1547 | } | |
1548 | ||
078e7b4a JB |
1549 | \f |
1550 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1551 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1552 | If STREAM is nil, use the value of `standard-input' (which see). | |
1553 | STREAM or the value of `standard-input' may be: | |
1554 | a buffer (read from point and advance it) | |
1555 | a marker (read from where it points and advance it) | |
1556 | a function (call it with no arguments for each character, | |
1557 | call it with a char as argument to push a char back) | |
1558 | a string (takes text from string, starting at the beginning) | |
1559 | t (read text line using minibuffer and use it, or read from | |
1560 | standard input in batch mode). */) | |
1561 | (stream) | |
5be02dff | 1562 | Lisp_Object stream; |
078e7b4a | 1563 | { |
5be02dff KH |
1564 | if (NILP (stream)) |
1565 | stream = Vstandard_input; | |
1566 | if (EQ (stream, Qt)) | |
1567 | stream = Qread_char; | |
5be02dff | 1568 | if (EQ (stream, Qread_char)) |
078e7b4a | 1569 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1570 | |
abb13b09 | 1571 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1572 | } |
1573 | ||
1574 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1575 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1576 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1577 | START and END optionally delimit a substring of STRING from which to read; | |
1578 | they default to 0 and (length STRING) respectively. */) | |
1579 | (string, start, end) | |
078e7b4a JB |
1580 | Lisp_Object string, start, end; |
1581 | { | |
2530ceaf | 1582 | Lisp_Object ret; |
b7826503 | 1583 | CHECK_STRING (string); |
2530ceaf CW |
1584 | /* read_internal_start sets read_from_string_index. */ |
1585 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1586 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1587 | } |
078e7b4a | 1588 | |
abb13b09 CW |
1589 | /* Function to set up the global context we need in toplevel read |
1590 | calls. */ | |
1591 | static Lisp_Object | |
1592 | read_internal_start (stream, start, end) | |
1593 | Lisp_Object stream; | |
1594 | Lisp_Object start; /* Only used when stream is a string. */ | |
1595 | Lisp_Object end; /* Only used when stream is a string. */ | |
1596 | { | |
1597 | Lisp_Object retval; | |
078e7b4a | 1598 | |
abb13b09 CW |
1599 | readchar_backlog = -1; |
1600 | readchar_count = 0; | |
17634846 | 1601 | new_backquote_flag = 0; |
4ad679f9 | 1602 | read_objects = Qnil; |
abb13b09 CW |
1603 | if (EQ (Vread_with_symbol_positions, Qt) |
1604 | || EQ (Vread_with_symbol_positions, stream)) | |
1605 | Vread_symbol_positions_list = Qnil; | |
1606 | ||
1607 | if (STRINGP (stream)) | |
1608 | { | |
1609 | int startval, endval; | |
1610 | if (NILP (end)) | |
d5db4077 | 1611 | endval = SCHARS (stream); |
abb13b09 CW |
1612 | else |
1613 | { | |
1614 | CHECK_NUMBER (end); | |
1615 | endval = XINT (end); | |
d5db4077 | 1616 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1617 | args_out_of_range (stream, end); |
1618 | } | |
17634846 | 1619 | |
abb13b09 CW |
1620 | if (NILP (start)) |
1621 | startval = 0; | |
1622 | else | |
1623 | { | |
1624 | CHECK_NUMBER (start); | |
1625 | startval = XINT (start); | |
1626 | if (startval < 0 || startval > endval) | |
1627 | args_out_of_range (stream, start); | |
1628 | } | |
1629 | read_from_string_index = startval; | |
1630 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1631 | read_from_string_limit = endval; | |
1632 | } | |
177c0ea7 | 1633 | |
abb13b09 CW |
1634 | retval = read0 (stream); |
1635 | if (EQ (Vread_with_symbol_positions, Qt) | |
1636 | || EQ (Vread_with_symbol_positions, stream)) | |
1637 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1638 | return retval; | |
078e7b4a JB |
1639 | } |
1640 | \f | |
6428369f KH |
1641 | /* Use this for recursive reads, in contexts where internal tokens |
1642 | are not allowed. */ | |
e28552a4 | 1643 | |
078e7b4a JB |
1644 | static Lisp_Object |
1645 | read0 (readcharfun) | |
1646 | Lisp_Object readcharfun; | |
1647 | { | |
1648 | register Lisp_Object val; | |
e28552a4 | 1649 | int c; |
078e7b4a | 1650 | |
17634846 | 1651 | val = read1 (readcharfun, &c, 0); |
6428369f | 1652 | if (c) |
93d75e4c RS |
1653 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1654 | make_number (c)), | |
e28552a4 | 1655 | Qnil)); |
078e7b4a JB |
1656 | |
1657 | return val; | |
1658 | } | |
1659 | \f | |
1660 | static int read_buffer_size; | |
1661 | static char *read_buffer; | |
1662 | ||
fe0e03f3 KH |
1663 | /* Read multibyte form and return it as a character. C is a first |
1664 | byte of multibyte form, and rest of them are read from | |
1665 | READCHARFUN. */ | |
6f7f43d5 | 1666 | |
fe0e03f3 KH |
1667 | static int |
1668 | read_multibyte (c, readcharfun) | |
1669 | register int c; | |
1670 | Lisp_Object readcharfun; | |
1671 | { | |
1672 | /* We need the actual character code of this multibyte | |
1673 | characters. */ | |
449fea39 | 1674 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1675 | int len = 0; |
0d5e5843 | 1676 | int bytes; |
fe0e03f3 | 1677 | |
abb13b09 CW |
1678 | if (c < 0) |
1679 | return c; | |
1680 | ||
fe0e03f3 KH |
1681 | str[len++] = c; |
1682 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1683 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1684 | { |
1685 | str[len++] = c; | |
1686 | readchar_count--; | |
1687 | } | |
fe0e03f3 | 1688 | UNREAD (c); |
0d5e5843 KH |
1689 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1690 | return STRING_CHAR (str, len); | |
1691 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1692 | but the first one, and return the first byte. */ | |
1693 | while (--len > 0) | |
1694 | UNREAD (str[len]); | |
1695 | return str[0]; | |
fe0e03f3 KH |
1696 | } |
1697 | ||
f6f79b37 RS |
1698 | /* Read a \-escape sequence, assuming we already read the `\'. |
1699 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1700 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1701 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1702 | |
078e7b4a | 1703 | static int |
f6f79b37 | 1704 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1705 | Lisp_Object readcharfun; |
e7fc914b | 1706 | int stringp; |
f6f79b37 | 1707 | int *byterep; |
078e7b4a JB |
1708 | { |
1709 | register int c = READCHAR; | |
f6f79b37 RS |
1710 | |
1711 | *byterep = 0; | |
1712 | ||
078e7b4a JB |
1713 | switch (c) |
1714 | { | |
f3849f25 | 1715 | case -1: |
da3b886d | 1716 | end_of_file_error (); |
f3849f25 | 1717 | |
078e7b4a | 1718 | case 'a': |
265a9e55 | 1719 | return '\007'; |
078e7b4a JB |
1720 | case 'b': |
1721 | return '\b'; | |
f405a585 RS |
1722 | case 'd': |
1723 | return 0177; | |
078e7b4a JB |
1724 | case 'e': |
1725 | return 033; | |
1726 | case 'f': | |
1727 | return '\f'; | |
1728 | case 'n': | |
1729 | return '\n'; | |
1730 | case 'r': | |
1731 | return '\r'; | |
1732 | case 't': | |
1733 | return '\t'; | |
1734 | case 'v': | |
1735 | return '\v'; | |
1736 | case '\n': | |
1737 | return -1; | |
e28552a4 | 1738 | case ' ': |
e7fc914b KH |
1739 | if (stringp) |
1740 | return -1; | |
1741 | return ' '; | |
078e7b4a JB |
1742 | |
1743 | case 'M': | |
1744 | c = READCHAR; | |
1745 | if (c != '-') | |
1746 | error ("Invalid escape character syntax"); | |
1747 | c = READCHAR; | |
1748 | if (c == '\\') | |
f6f79b37 | 1749 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1750 | return c | meta_modifier; |
f405a585 RS |
1751 | |
1752 | case 'S': | |
1753 | c = READCHAR; | |
1754 | if (c != '-') | |
1755 | error ("Invalid escape character syntax"); | |
1756 | c = READCHAR; | |
1757 | if (c == '\\') | |
f6f79b37 | 1758 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1759 | return c | shift_modifier; |
1760 | ||
1761 | case 'H': | |
1762 | c = READCHAR; | |
1763 | if (c != '-') | |
1764 | error ("Invalid escape character syntax"); | |
1765 | c = READCHAR; | |
1766 | if (c == '\\') | |
f6f79b37 | 1767 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1768 | return c | hyper_modifier; |
1769 | ||
1770 | case 'A': | |
1771 | c = READCHAR; | |
1772 | if (c != '-') | |
1773 | error ("Invalid escape character syntax"); | |
1774 | c = READCHAR; | |
1775 | if (c == '\\') | |
f6f79b37 | 1776 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1777 | return c | alt_modifier; |
1778 | ||
1779 | case 's': | |
1780 | c = READCHAR; | |
010b7eac RS |
1781 | if (c != '-') |
1782 | { | |
1783 | UNREAD (c); | |
1784 | return ' '; | |
1785 | } | |
7bd279cd RS |
1786 | c = READCHAR; |
1787 | if (c == '\\') | |
f6f79b37 | 1788 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1789 | return c | super_modifier; |
078e7b4a JB |
1790 | |
1791 | case 'C': | |
1792 | c = READCHAR; | |
1793 | if (c != '-') | |
1794 | error ("Invalid escape character syntax"); | |
1795 | case '^': | |
1796 | c = READCHAR; | |
1797 | if (c == '\\') | |
f6f79b37 | 1798 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1799 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1800 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1801 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1802 | return c | ctrl_modifier; | |
f405a585 RS |
1803 | /* ASCII control chars are made from letters (both cases), |
1804 | as well as the non-letters within 0100...0137. */ | |
1805 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1806 | return (c & (037 | ~0177)); | |
1807 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1808 | return (c & (037 | ~0177)); | |
078e7b4a | 1809 | else |
7bd279cd | 1810 | return c | ctrl_modifier; |
078e7b4a JB |
1811 | |
1812 | case '0': | |
1813 | case '1': | |
1814 | case '2': | |
1815 | case '3': | |
1816 | case '4': | |
1817 | case '5': | |
1818 | case '6': | |
1819 | case '7': | |
1820 | /* An octal escape, as in ANSI C. */ | |
1821 | { | |
1822 | register int i = c - '0'; | |
1823 | register int count = 0; | |
1824 | while (++count < 3) | |
1825 | { | |
1826 | if ((c = READCHAR) >= '0' && c <= '7') | |
1827 | { | |
1828 | i *= 8; | |
1829 | i += c - '0'; | |
1830 | } | |
1831 | else | |
1832 | { | |
1833 | UNREAD (c); | |
1834 | break; | |
1835 | } | |
1836 | } | |
177c0ea7 | 1837 | |
f6f79b37 | 1838 | *byterep = 1; |
078e7b4a JB |
1839 | return i; |
1840 | } | |
1841 | ||
1842 | case 'x': | |
1843 | /* A hex escape, as in ANSI C. */ | |
1844 | { | |
1845 | int i = 0; | |
1846 | while (1) | |
1847 | { | |
1848 | c = READCHAR; | |
1849 | if (c >= '0' && c <= '9') | |
1850 | { | |
1851 | i *= 16; | |
1852 | i += c - '0'; | |
1853 | } | |
1854 | else if ((c >= 'a' && c <= 'f') | |
1855 | || (c >= 'A' && c <= 'F')) | |
1856 | { | |
1857 | i *= 16; | |
1858 | if (c >= 'a' && c <= 'f') | |
1859 | i += c - 'a' + 10; | |
1860 | else | |
1861 | i += c - 'A' + 10; | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | UNREAD (c); | |
1866 | break; | |
1867 | } | |
1868 | } | |
f6f79b37 RS |
1869 | |
1870 | *byterep = 2; | |
078e7b4a JB |
1871 | return i; |
1872 | } | |
1873 | ||
1874 | default: | |
fe0e03f3 KH |
1875 | if (BASE_LEADING_CODE_P (c)) |
1876 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1877 | return c; |
1878 | } | |
1879 | } | |
1880 | ||
bf5d1a17 GM |
1881 | |
1882 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1883 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1884 | read error is signaled . Value is the integer read. Signals an | |
1885 | error if encountering invalid read syntax or if RADIX is out of | |
1886 | range. */ | |
1887 | ||
1888 | static Lisp_Object | |
1889 | read_integer (readcharfun, radix) | |
1890 | Lisp_Object readcharfun; | |
1891 | int radix; | |
1892 | { | |
5e37dc22 GM |
1893 | int ndigits = 0, invalid_p, c, sign = 0; |
1894 | EMACS_INT number = 0; | |
bf5d1a17 GM |
1895 | |
1896 | if (radix < 2 || radix > 36) | |
1897 | invalid_p = 1; | |
1898 | else | |
1899 | { | |
1900 | number = ndigits = invalid_p = 0; | |
1901 | sign = 1; | |
1902 | ||
1903 | c = READCHAR; | |
1904 | if (c == '-') | |
1905 | { | |
1906 | c = READCHAR; | |
1907 | sign = -1; | |
1908 | } | |
1909 | else if (c == '+') | |
1910 | c = READCHAR; | |
177c0ea7 | 1911 | |
bf5d1a17 GM |
1912 | while (c >= 0) |
1913 | { | |
1914 | int digit; | |
177c0ea7 | 1915 | |
bf5d1a17 GM |
1916 | if (c >= '0' && c <= '9') |
1917 | digit = c - '0'; | |
1918 | else if (c >= 'a' && c <= 'z') | |
1919 | digit = c - 'a' + 10; | |
1920 | else if (c >= 'A' && c <= 'Z') | |
1921 | digit = c - 'A' + 10; | |
1922 | else | |
b632fa48 GM |
1923 | { |
1924 | UNREAD (c); | |
1925 | break; | |
1926 | } | |
bf5d1a17 GM |
1927 | |
1928 | if (digit < 0 || digit >= radix) | |
1929 | invalid_p = 1; | |
1930 | ||
1931 | number = radix * number + digit; | |
1932 | ++ndigits; | |
1933 | c = READCHAR; | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | if (ndigits == 0 || invalid_p) | |
1938 | { | |
1939 | char buf[50]; | |
1940 | sprintf (buf, "integer, radix %d", radix); | |
1941 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
1942 | } | |
1943 | ||
1944 | return make_number (sign * number); | |
1945 | } | |
1946 | ||
1947 | ||
a742d646 GM |
1948 | /* Convert unibyte text in read_buffer to multibyte. |
1949 | ||
1950 | Initially, *P is a pointer after the end of the unibyte text, and | |
1951 | the pointer *END points after the end of read_buffer. | |
1952 | ||
1953 | If read_buffer doesn't have enough room to hold the result | |
1954 | of the conversion, reallocate it and adjust *P and *END. | |
1955 | ||
1956 | At the end, make *P point after the result of the conversion, and | |
1957 | return in *NCHARS the number of characters in the converted | |
1958 | text. */ | |
1959 | ||
1960 | static void | |
1961 | to_multibyte (p, end, nchars) | |
1962 | char **p, **end; | |
1963 | int *nchars; | |
1964 | { | |
1965 | int nbytes; | |
1966 | ||
1967 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 1968 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
1969 | { |
1970 | int offset = *p - read_buffer; | |
fe957e65 | 1971 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
1972 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
1973 | *p = read_buffer + offset; | |
1974 | *end = read_buffer + read_buffer_size; | |
1975 | } | |
1976 | ||
1977 | if (nbytes != *nchars) | |
1978 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
1979 | *p - read_buffer, nchars); | |
177c0ea7 | 1980 | |
a742d646 GM |
1981 | *p = read_buffer + nbytes; |
1982 | } | |
1983 | ||
1984 | ||
6428369f KH |
1985 | /* If the next token is ')' or ']' or '.', we store that character |
1986 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1987 | zero in *PCH and we read and return one lisp object. |
1988 | ||
1989 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1990 | ||
078e7b4a | 1991 | static Lisp_Object |
17634846 | 1992 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1993 | register Lisp_Object readcharfun; |
e28552a4 | 1994 | int *pch; |
17634846 | 1995 | int first_in_list; |
078e7b4a JB |
1996 | { |
1997 | register int c; | |
4ad679f9 EN |
1998 | int uninterned_symbol = 0; |
1999 | ||
6428369f | 2000 | *pch = 0; |
078e7b4a JB |
2001 | |
2002 | retry: | |
2003 | ||
2004 | c = READCHAR; | |
9c97398c GM |
2005 | if (c < 0) |
2006 | end_of_file_error (); | |
078e7b4a JB |
2007 | |
2008 | switch (c) | |
2009 | { | |
2010 | case '(': | |
2011 | return read_list (0, readcharfun); | |
2012 | ||
2013 | case '[': | |
c15cfd1f | 2014 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2015 | |
2016 | case ')': | |
2017 | case ']': | |
078e7b4a | 2018 | { |
6428369f KH |
2019 | *pch = c; |
2020 | return Qnil; | |
078e7b4a JB |
2021 | } |
2022 | ||
2023 | case '#': | |
200f684e | 2024 | c = READCHAR; |
c2390933 RS |
2025 | if (c == '^') |
2026 | { | |
2027 | c = READCHAR; | |
2028 | if (c == '[') | |
2029 | { | |
2030 | Lisp_Object tmp; | |
c15cfd1f | 2031 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
2032 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
2033 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
2034 | error ("Invalid size char-table"); | |
2035 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 2036 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
2037 | return tmp; |
2038 | } | |
3701b5de KH |
2039 | else if (c == '^') |
2040 | { | |
2041 | c = READCHAR; | |
2042 | if (c == '[') | |
2043 | { | |
2044 | Lisp_Object tmp; | |
c15cfd1f | 2045 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
2046 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
2047 | error ("Invalid size char-table"); | |
2048 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2049 | XCHAR_TABLE (tmp)->top = Qnil; | |
2050 | return tmp; | |
2051 | } | |
2052 | Fsignal (Qinvalid_read_syntax, | |
2053 | Fcons (make_string ("#^^", 3), Qnil)); | |
2054 | } | |
c2390933 RS |
2055 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
2056 | } | |
2057 | if (c == '&') | |
2058 | { | |
2059 | Lisp_Object length; | |
2060 | length = read1 (readcharfun, pch, first_in_list); | |
2061 | c = READCHAR; | |
2062 | if (c == '"') | |
2063 | { | |
2064 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2065 | int size_in_chars |
2066 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2067 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2068 | |
2069 | UNREAD (c); | |
2070 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2071 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2072 | /* We used to print 1 char too many |
2073 | when the number of bits was a multiple of 8. | |
2074 | Accept such input in case it came from an old version. */ | |
2075 | && ! (XFASTINT (length) | |
d1ca81d9 | 2076 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
c2390933 | 2077 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 2078 | Fcons (make_string ("#&...", 5), Qnil)); |
177c0ea7 | 2079 | |
c2390933 | 2080 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2081 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2082 | size_in_chars); |
67d3b149 | 2083 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2084 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2085 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2086 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2087 | return val; |
2088 | } | |
ec3bbd7d | 2089 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 2090 | Qnil)); |
c2390933 | 2091 | } |
200f684e RS |
2092 | if (c == '[') |
2093 | { | |
2094 | /* Accept compiled functions at read-time so that we don't have to | |
2095 | build them using function calls. */ | |
748ef62f | 2096 | Lisp_Object tmp; |
c15cfd1f | 2097 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2098 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2099 | XVECTOR (tmp)->contents); | |
200f684e | 2100 | } |
748ef62f RS |
2101 | if (c == '(') |
2102 | { | |
2103 | Lisp_Object tmp; | |
2104 | struct gcpro gcpro1; | |
e28552a4 | 2105 | int ch; |
748ef62f RS |
2106 | |
2107 | /* Read the string itself. */ | |
17634846 | 2108 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2109 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
2110 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
2111 | GCPRO1 (tmp); | |
2112 | /* Read the intervals and their properties. */ | |
2113 | while (1) | |
2114 | { | |
2115 | Lisp_Object beg, end, plist; | |
2116 | ||
17634846 | 2117 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2118 | end = plist = Qnil; |
6428369f KH |
2119 | if (ch == ')') |
2120 | break; | |
2121 | if (ch == 0) | |
17634846 | 2122 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2123 | if (ch == 0) |
17634846 | 2124 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2125 | if (ch) |
748ef62f | 2126 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
2127 | Fcons (build_string ("invalid string property list"), |
2128 | Qnil)); | |
748ef62f RS |
2129 | Fset_text_properties (beg, end, plist, tmp); |
2130 | } | |
2131 | UNGCPRO; | |
2132 | return tmp; | |
2133 | } | |
177c0ea7 | 2134 | |
20ea2964 RS |
2135 | /* #@NUMBER is used to skip NUMBER following characters. |
2136 | That's used in .elc files to skip over doc strings | |
2137 | and function definitions. */ | |
2138 | if (c == '@') | |
2139 | { | |
2140 | int i, nskip = 0; | |
2141 | ||
2142 | /* Read a decimal integer. */ | |
2143 | while ((c = READCHAR) >= 0 | |
2144 | && c >= '0' && c <= '9') | |
2145 | { | |
2146 | nskip *= 10; | |
2147 | nskip += c - '0'; | |
2148 | } | |
2149 | if (c >= 0) | |
2150 | UNREAD (c); | |
177c0ea7 | 2151 | |
b2a30870 RS |
2152 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2153 | { | |
2154 | /* If we are supposed to force doc strings into core right now, | |
2155 | record the last string that we skipped, | |
2156 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2157 | |
2158 | /* But first exchange saved_doc_string | |
2159 | with prev_saved_doc_string, so we save two strings. */ | |
2160 | { | |
2161 | char *temp = saved_doc_string; | |
2162 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2163 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2164 | int temp_len = saved_doc_string_length; |
2165 | ||
2166 | saved_doc_string = prev_saved_doc_string; | |
2167 | saved_doc_string_size = prev_saved_doc_string_size; | |
2168 | saved_doc_string_position = prev_saved_doc_string_position; | |
2169 | saved_doc_string_length = prev_saved_doc_string_length; | |
2170 | ||
2171 | prev_saved_doc_string = temp; | |
2172 | prev_saved_doc_string_size = temp_size; | |
2173 | prev_saved_doc_string_position = temp_pos; | |
2174 | prev_saved_doc_string_length = temp_len; | |
2175 | } | |
2176 | ||
b2a30870 RS |
2177 | if (saved_doc_string_size == 0) |
2178 | { | |
2179 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2180 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2181 | } |
2182 | if (nskip > saved_doc_string_size) | |
2183 | { | |
2184 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2185 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2186 | saved_doc_string_size); | |
b2a30870 RS |
2187 | } |
2188 | ||
68c45bf0 | 2189 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2190 | |
2191 | /* Copy that many characters into saved_doc_string. */ | |
2192 | for (i = 0; i < nskip && c >= 0; i++) | |
2193 | saved_doc_string[i] = c = READCHAR; | |
2194 | ||
2195 | saved_doc_string_length = i; | |
2196 | } | |
2197 | else | |
b2a30870 RS |
2198 | { |
2199 | /* Skip that many characters. */ | |
2200 | for (i = 0; i < nskip && c >= 0; i++) | |
2201 | c = READCHAR; | |
2202 | } | |
d49f0c1a | 2203 | |
20ea2964 RS |
2204 | goto retry; |
2205 | } | |
e2518d02 RS |
2206 | if (c == '!') |
2207 | { | |
2208 | /* #! appears at the beginning of an executable file. | |
2209 | Skip the first line. */ | |
225c7a07 | 2210 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2211 | c = READCHAR; |
2212 | goto retry; | |
2213 | } | |
20ea2964 RS |
2214 | if (c == '$') |
2215 | return Vload_file_name; | |
2b6cae0c RS |
2216 | if (c == '\'') |
2217 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2218 | /* #:foo is the uninterned symbol named foo. */ |
2219 | if (c == ':') | |
2220 | { | |
2221 | uninterned_symbol = 1; | |
2222 | c = READCHAR; | |
2223 | goto default_label; | |
2224 | } | |
2225 | /* Reader forms that can reuse previously read objects. */ | |
2226 | if (c >= '0' && c <= '9') | |
2227 | { | |
2228 | int n = 0; | |
2229 | Lisp_Object tem; | |
2b6cae0c | 2230 | |
4ad679f9 EN |
2231 | /* Read a non-negative integer. */ |
2232 | while (c >= '0' && c <= '9') | |
2233 | { | |
2234 | n *= 10; | |
2235 | n += c - '0'; | |
2236 | c = READCHAR; | |
2237 | } | |
2238 | /* #n=object returns object, but associates it with n for #n#. */ | |
2239 | if (c == '=') | |
2240 | { | |
9e062b6c RS |
2241 | /* Make a placeholder for #n# to use temporarily */ |
2242 | Lisp_Object placeholder; | |
2243 | Lisp_Object cell; | |
2244 | ||
2245 | placeholder = Fcons(Qnil, Qnil); | |
2246 | cell = Fcons (make_number (n), placeholder); | |
2247 | read_objects = Fcons (cell, read_objects); | |
2248 | ||
2249 | /* Read the object itself. */ | |
4ad679f9 | 2250 | tem = read0 (readcharfun); |
9e062b6c RS |
2251 | |
2252 | /* Now put it everywhere the placeholder was... */ | |
2253 | substitute_object_in_subtree (tem, placeholder); | |
2254 | ||
2255 | /* ...and #n# will use the real value from now on. */ | |
2256 | Fsetcdr (cell, tem); | |
177c0ea7 | 2257 | |
4ad679f9 EN |
2258 | return tem; |
2259 | } | |
2260 | /* #n# returns a previously read object. */ | |
2261 | if (c == '#') | |
2262 | { | |
2263 | tem = Fassq (make_number (n), read_objects); | |
2264 | if (CONSP (tem)) | |
2265 | return XCDR (tem); | |
2266 | /* Fall through to error message. */ | |
2267 | } | |
bf5d1a17 GM |
2268 | else if (c == 'r' || c == 'R') |
2269 | return read_integer (readcharfun, n); | |
177c0ea7 | 2270 | |
4ad679f9 EN |
2271 | /* Fall through to error message. */ |
2272 | } | |
bf5d1a17 GM |
2273 | else if (c == 'x' || c == 'X') |
2274 | return read_integer (readcharfun, 16); | |
2275 | else if (c == 'o' || c == 'O') | |
2276 | return read_integer (readcharfun, 8); | |
2277 | else if (c == 'b' || c == 'B') | |
2278 | return read_integer (readcharfun, 2); | |
20ea2964 | 2279 | |
200f684e | 2280 | UNREAD (c); |
748ef62f | 2281 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
2282 | |
2283 | case ';': | |
2284 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2285 | goto retry; | |
2286 | ||
2287 | case '\'': | |
2288 | { | |
2289 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2290 | } | |
2291 | ||
17634846 RS |
2292 | case '`': |
2293 | if (first_in_list) | |
2294 | goto default_label; | |
2295 | else | |
2296 | { | |
2297 | Lisp_Object value; | |
2298 | ||
0ffbbdeb | 2299 | new_backquote_flag++; |
17634846 | 2300 | value = read0 (readcharfun); |
0ffbbdeb | 2301 | new_backquote_flag--; |
17634846 RS |
2302 | |
2303 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2304 | } | |
2305 | ||
2306 | case ',': | |
2307 | if (new_backquote_flag) | |
2308 | { | |
2309 | Lisp_Object comma_type = Qnil; | |
2310 | Lisp_Object value; | |
2311 | int ch = READCHAR; | |
2312 | ||
2313 | if (ch == '@') | |
2314 | comma_type = Qcomma_at; | |
2315 | else if (ch == '.') | |
2316 | comma_type = Qcomma_dot; | |
2317 | else | |
2318 | { | |
2319 | if (ch >= 0) UNREAD (ch); | |
2320 | comma_type = Qcomma; | |
2321 | } | |
2322 | ||
0ffbbdeb | 2323 | new_backquote_flag--; |
17634846 | 2324 | value = read0 (readcharfun); |
0ffbbdeb | 2325 | new_backquote_flag++; |
17634846 RS |
2326 | return Fcons (comma_type, Fcons (value, Qnil)); |
2327 | } | |
2328 | else | |
2329 | goto default_label; | |
2330 | ||
078e7b4a JB |
2331 | case '?': |
2332 | { | |
f6f79b37 | 2333 | int discard; |
df9c2be7 KS |
2334 | int next_char; |
2335 | int ok; | |
f6f79b37 | 2336 | |
078e7b4a | 2337 | c = READCHAR; |
9c97398c GM |
2338 | if (c < 0) |
2339 | end_of_file_error (); | |
078e7b4a | 2340 | |
b9284371 KS |
2341 | /* Accept `single space' syntax like (list ? x) where the |
2342 | whitespace character is SPC or TAB. | |
2343 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2344 | as there are well-established escape sequences for these. */ | |
2345 | if (c == ' ' || c == '\t') | |
2346 | return make_number (c); | |
2347 | ||
078e7b4a | 2348 | if (c == '\\') |
f6f79b37 | 2349 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2350 | else if (BASE_LEADING_CODE_P (c)) |
2351 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2352 | |
df9c2be7 KS |
2353 | next_char = READCHAR; |
2354 | if (next_char == '.') | |
2355 | { | |
2356 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2357 | int next_next_char = READCHAR; | |
2358 | UNREAD (next_next_char); | |
2359 | ||
2360 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2361 | || (next_next_char < 0200 |
2362 | && (index ("\"';([#?", next_next_char) | |
2363 | || (!first_in_list && next_next_char == '`') | |
2364 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2365 | } |
2366 | else | |
2367 | { | |
2368 | ok = (next_char <= 040 | |
e613ea97 KH |
2369 | || (next_char < 0200 |
2370 | && (index ("\"';()[]#?", next_char) | |
2371 | || (!first_in_list && next_char == '`') | |
2372 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2373 | } |
2374 | UNREAD (next_char); | |
2375 | if (!ok) | |
37cd4238 KS |
2376 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("?", 1), Qnil)); |
2377 | ||
6f7f43d5 | 2378 | return make_number (c); |
078e7b4a JB |
2379 | } |
2380 | ||
00a9a935 | 2381 | case '"': |
078e7b4a | 2382 | { |
a742d646 GM |
2383 | char *p = read_buffer; |
2384 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2385 | register int c; |
5150eeec RS |
2386 | /* 1 if we saw an escape sequence specifying |
2387 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2388 | int force_multibyte = 0; |
5150eeec | 2389 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2390 | a single-byte character. */ |
2391 | int force_singlebyte = 0; | |
5150eeec RS |
2392 | /* 1 if read_buffer contains multibyte text now. */ |
2393 | int is_multibyte = 0; | |
078e7b4a | 2394 | int cancel = 0; |
5150eeec | 2395 | int nchars = 0; |
078e7b4a JB |
2396 | |
2397 | while ((c = READCHAR) >= 0 | |
2398 | && c != '\"') | |
2399 | { | |
449fea39 | 2400 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2401 | { |
5d65df0d GM |
2402 | int offset = p - read_buffer; |
2403 | read_buffer = (char *) xrealloc (read_buffer, | |
2404 | read_buffer_size *= 2); | |
2405 | p = read_buffer + offset; | |
078e7b4a JB |
2406 | end = read_buffer + read_buffer_size; |
2407 | } | |
bed23cb2 | 2408 | |
078e7b4a | 2409 | if (c == '\\') |
03e88613 | 2410 | { |
f6f79b37 RS |
2411 | int byterep; |
2412 | ||
2413 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2414 | |
2415 | /* C is -1 if \ newline has just been seen */ | |
2416 | if (c == -1) | |
03e88613 | 2417 | { |
bed23cb2 RS |
2418 | if (p == read_buffer) |
2419 | cancel = 1; | |
03e88613 RS |
2420 | continue; |
2421 | } | |
bed23cb2 | 2422 | |
f6f79b37 | 2423 | if (byterep == 1) |
e7fc914b | 2424 | force_singlebyte = 1; |
f6f79b37 RS |
2425 | else if (byterep == 2) |
2426 | force_multibyte = 1; | |
03e88613 | 2427 | } |
6f7f43d5 | 2428 | |
5150eeec RS |
2429 | /* A character that must be multibyte forces multibyte. */ |
2430 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2431 | force_multibyte = 1; | |
2432 | ||
2433 | /* If we just discovered the need to be multibyte, | |
2434 | convert the text accumulated thus far. */ | |
2435 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2436 | { |
5150eeec RS |
2437 | is_multibyte = 1; |
2438 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2439 | } |
988c2f83 | 2440 | |
5150eeec RS |
2441 | /* Allow `\C- ' and `\C-?'. */ |
2442 | if (c == (CHAR_CTL | ' ')) | |
2443 | c = 0; | |
2444 | else if (c == (CHAR_CTL | '?')) | |
2445 | c = 127; | |
95af0924 | 2446 | |
5150eeec RS |
2447 | if (c & CHAR_SHIFT) |
2448 | { | |
2449 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2450 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2451 | c &= ~CHAR_SHIFT; | |
2452 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2453 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2454 | } |
5150eeec RS |
2455 | |
2456 | if (c & CHAR_META) | |
2457 | /* Move the meta bit to the right place for a string. */ | |
2458 | c = (c & ~CHAR_META) | 0x80; | |
2459 | if (c & CHAR_MODIFIER_MASK) | |
2460 | error ("Invalid modifier in string"); | |
2461 | ||
2462 | if (is_multibyte) | |
2463 | p += CHAR_STRING (c, p); | |
2464 | else | |
2465 | *p++ = c; | |
2466 | ||
2467 | nchars++; | |
078e7b4a | 2468 | } |
5150eeec | 2469 | |
6f7f43d5 | 2470 | if (c < 0) |
9c97398c | 2471 | end_of_file_error (); |
078e7b4a JB |
2472 | |
2473 | /* If purifying, and string starts with \ newline, | |
2474 | return zero instead. This is for doc strings | |
08564963 | 2475 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2476 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2477 | return make_number (0); |
2478 | ||
5150eeec RS |
2479 | if (is_multibyte || force_singlebyte) |
2480 | ; | |
94e554db RS |
2481 | else if (load_convert_to_unibyte) |
2482 | { | |
2483 | Lisp_Object string; | |
a742d646 | 2484 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2485 | if (p - read_buffer != nchars) |
2486 | { | |
2487 | string = make_multibyte_string (read_buffer, nchars, | |
2488 | p - read_buffer); | |
2489 | return Fstring_make_unibyte (string); | |
2490 | } | |
5150eeec RS |
2491 | /* We can make a unibyte string directly. */ |
2492 | is_multibyte = 0; | |
94e554db | 2493 | } |
8db9dc66 RS |
2494 | else if (EQ (readcharfun, Qget_file_char) |
2495 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2496 | { |
2497 | /* Nowadays, reading directly from a file is used only for | |
2498 | compiled Emacs Lisp files, and those always use the | |
2499 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2500 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2501 | byte-compile-dynamic = t). So make the string multibyte |
2502 | if the string contains any multibyte sequences. | |
2503 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2504 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2505 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2506 | } |
e28552a4 | 2507 | else |
bed23cb2 RS |
2508 | /* In all other cases, if we read these bytes as |
2509 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2510 | ; |
e7fc914b | 2511 | |
abb13b09 CW |
2512 | /* We want readchar_count to be the number of characters, not |
2513 | bytes. Hence we adjust for multibyte characters in the | |
2514 | string. ... But it doesn't seem to be necessary, because | |
2515 | READCHAR *does* read multibyte characters from buffers. */ | |
2516 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2517 | if (read_pure) |
491f16a2 | 2518 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2519 | is_multibyte); |
491f16a2 | 2520 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2521 | is_multibyte); |
078e7b4a JB |
2522 | } |
2523 | ||
109d300c JB |
2524 | case '.': |
2525 | { | |
109d300c JB |
2526 | int next_char = READCHAR; |
2527 | UNREAD (next_char); | |
2528 | ||
035eec48 | 2529 | if (next_char <= 040 |
e613ea97 | 2530 | || (next_char < 0200 |
95af0924 KS |
2531 | && (index ("\"';([#?", next_char) |
2532 | || (!first_in_list && next_char == '`') | |
2533 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2534 | { |
6428369f KH |
2535 | *pch = c; |
2536 | return Qnil; | |
109d300c JB |
2537 | } |
2538 | ||
2539 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2540 | below will now loop at least once, assuring that we will not | |
2541 | try to UNREAD two characters in a row. */ | |
2542 | } | |
078e7b4a | 2543 | default: |
17634846 | 2544 | default_label: |
078e7b4a JB |
2545 | if (c <= 040) goto retry; |
2546 | { | |
38404229 | 2547 | char *p = read_buffer; |
481c6336 | 2548 | int quoted = 0; |
078e7b4a JB |
2549 | |
2550 | { | |
38404229 | 2551 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2552 | |
6f7f43d5 | 2553 | while (c > 040 |
e613ea97 KH |
2554 | && (c >= 0200 |
2555 | || (!index ("\"';()[]#", c) | |
2556 | && !(!first_in_list && c == '`') | |
2557 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2558 | { |
449fea39 | 2559 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2560 | { |
5d65df0d GM |
2561 | int offset = p - read_buffer; |
2562 | read_buffer = (char *) xrealloc (read_buffer, | |
2563 | read_buffer_size *= 2); | |
2564 | p = read_buffer + offset; | |
078e7b4a JB |
2565 | end = read_buffer + read_buffer_size; |
2566 | } | |
177c0ea7 | 2567 | |
078e7b4a | 2568 | if (c == '\\') |
481c6336 RS |
2569 | { |
2570 | c = READCHAR; | |
4ab11c09 GM |
2571 | if (c == -1) |
2572 | end_of_file_error (); | |
481c6336 RS |
2573 | quoted = 1; |
2574 | } | |
6f7f43d5 | 2575 | |
bed23cb2 | 2576 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2577 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2578 | else |
2579 | *p++ = c; | |
6f7f43d5 | 2580 | |
078e7b4a JB |
2581 | c = READCHAR; |
2582 | } | |
2583 | ||
2584 | if (p == end) | |
2585 | { | |
5d65df0d GM |
2586 | int offset = p - read_buffer; |
2587 | read_buffer = (char *) xrealloc (read_buffer, | |
2588 | read_buffer_size *= 2); | |
2589 | p = read_buffer + offset; | |
2590 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2591 | } |
2592 | *p = 0; | |
2593 | if (c >= 0) | |
2594 | UNREAD (c); | |
2595 | } | |
2596 | ||
4ad679f9 | 2597 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2598 | { |
2599 | register char *p1; | |
2600 | register Lisp_Object val; | |
2601 | p1 = read_buffer; | |
2602 | if (*p1 == '+' || *p1 == '-') p1++; | |
2603 | /* Is it an integer? */ | |
2604 | if (p1 != p) | |
2605 | { | |
2606 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2607 | /* Integers can have trailing decimal points. */ |
2608 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2609 | if (p1 == p) |
2610 | /* It is an integer. */ | |
2611 | { | |
481c6336 RS |
2612 | if (p1[-1] == '.') |
2613 | p1[-1] = '\0'; | |
faca07fb RS |
2614 | if (sizeof (int) == sizeof (EMACS_INT)) |
2615 | XSETINT (val, atoi (read_buffer)); | |
2616 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2617 | XSETINT (val, atol (read_buffer)); | |
2618 | else | |
2619 | abort (); | |
481c6336 RS |
2620 | return val; |
2621 | } | |
2622 | } | |
481c6336 | 2623 | if (isfloat_string (read_buffer)) |
eb659c41 | 2624 | { |
a8972052 PE |
2625 | /* Compute NaN and infinities using 0.0 in a variable, |
2626 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2627 | than we are. */ |
3c329963 | 2628 | double zero = 0.0; |
a8972052 PE |
2629 | |
2630 | double value; | |
2631 | ||
2632 | /* Negate the value ourselves. This treats 0, NaNs, | |
2633 | and infinity properly on IEEE floating point hosts, | |
2634 | and works around a common bug where atof ("-0.0") | |
2635 | drops the sign. */ | |
2636 | int negative = read_buffer[0] == '-'; | |
2637 | ||
2638 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2639 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2640 | switch (p[-1]) |
eb659c41 | 2641 | { |
a8972052 PE |
2642 | case 'F': |
2643 | value = 1.0 / zero; | |
2644 | break; | |
2645 | case 'N': | |
2646 | value = zero / zero; | |
7690cbb0 RS |
2647 | |
2648 | /* If that made a "negative" NaN, negate it. */ | |
2649 | ||
2650 | { | |
2651 | int i; | |
2652 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2653 | ||
2654 | u_data.d = value; | |
2655 | u_minus_zero.d = - 0.0; | |
2656 | for (i = 0; i < sizeof (double); i++) | |
2657 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2658 | { | |
2659 | value = - value; | |
2660 | break; | |
2661 | } | |
2662 | } | |
2663 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2664 | break; |
2665 | default: | |
2666 | value = atof (read_buffer + negative); | |
2667 | break; | |
eb659c41 | 2668 | } |
a8972052 PE |
2669 | |
2670 | return make_float (negative ? - value : value); | |
eb659c41 | 2671 | } |
481c6336 | 2672 | } |
abb13b09 CW |
2673 | { |
2674 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2675 | : intern (read_buffer); | |
2676 | if (EQ (Vread_with_symbol_positions, Qt) | |
2677 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2678 | Vread_symbol_positions_list = |
abb13b09 CW |
2679 | /* Kind of a hack; this will probably fail if characters |
2680 | in the symbol name were escaped. Not really a big | |
2681 | deal, though. */ | |
f74db720 SM |
2682 | Fcons (Fcons (result, |
2683 | make_number (readchar_count | |
2684 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2685 | Vread_symbol_positions_list); |
2686 | return result; | |
2687 | } | |
078e7b4a JB |
2688 | } |
2689 | } | |
2690 | } | |
2691 | \f | |
9e062b6c RS |
2692 | |
2693 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2694 | static Lisp_Object seen_list; | |
2695 | ||
2696 | static void | |
2697 | substitute_object_in_subtree (object, placeholder) | |
2698 | Lisp_Object object; | |
2699 | Lisp_Object placeholder; | |
2700 | { | |
2701 | Lisp_Object check_object; | |
2702 | ||
2703 | /* We haven't seen any objects when we start. */ | |
2704 | seen_list = Qnil; | |
2705 | ||
2706 | /* Make all the substitutions. */ | |
2707 | check_object | |
2708 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2709 | |
9e062b6c RS |
2710 | /* Clear seen_list because we're done with it. */ |
2711 | seen_list = Qnil; | |
2712 | ||
2713 | /* The returned object here is expected to always eq the | |
2714 | original. */ | |
2715 | if (!EQ (check_object, object)) | |
2716 | error ("Unexpected mutation error in reader"); | |
2717 | } | |
2718 | ||
2719 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2720 | #define SUBSTITUTE(get_val, set_val) \ | |
2721 | { \ | |
2722 | Lisp_Object old_value = get_val; \ | |
2723 | Lisp_Object true_value \ | |
2724 | = substitute_object_recurse (object, placeholder,\ | |
2725 | old_value); \ | |
2726 | \ | |
2727 | if (!EQ (old_value, true_value)) \ | |
2728 | { \ | |
2729 | set_val; \ | |
2730 | } \ | |
2731 | } | |
2732 | ||
2733 | static Lisp_Object | |
2734 | substitute_object_recurse (object, placeholder, subtree) | |
2735 | Lisp_Object object; | |
2736 | Lisp_Object placeholder; | |
2737 | Lisp_Object subtree; | |
2738 | { | |
2739 | /* If we find the placeholder, return the target object. */ | |
2740 | if (EQ (placeholder, subtree)) | |
2741 | return object; | |
2742 | ||
2743 | /* If we've been to this node before, don't explore it again. */ | |
2744 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2745 | return subtree; | |
2746 | ||
2747 | /* If this node can be the entry point to a cycle, remember that | |
2748 | we've seen it. It can only be such an entry point if it was made | |
2749 | by #n=, which means that we can find it as a value in | |
2750 | read_objects. */ | |
2751 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2752 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2753 | |
9e062b6c RS |
2754 | /* Recurse according to subtree's type. |
2755 | Every branch must return a Lisp_Object. */ | |
2756 | switch (XTYPE (subtree)) | |
2757 | { | |
2758 | case Lisp_Vectorlike: | |
2759 | { | |
2760 | int i; | |
7c752c80 | 2761 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2762 | for (i = 0; i < length; i++) |
2763 | { | |
2764 | Lisp_Object idx = make_number (i); | |
2765 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2766 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2767 | } |
2768 | return subtree; | |
2769 | } | |
2770 | ||
2771 | case Lisp_Cons: | |
2772 | { | |
2773 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2774 | Fsetcar (subtree, true_value)); |
9e062b6c | 2775 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2776 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2777 | return subtree; |
2778 | } | |
2779 | ||
9e062b6c RS |
2780 | case Lisp_String: |
2781 | { | |
2782 | /* Check for text properties in each interval. | |
e61b9b87 | 2783 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2784 | |
d5db4077 | 2785 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2786 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2787 | |
0d74b006 SM |
2788 | traverse_intervals_noorder (root_interval, |
2789 | &substitute_in_interval, arg); | |
9e062b6c RS |
2790 | |
2791 | return subtree; | |
2792 | } | |
9e062b6c RS |
2793 | |
2794 | /* Other types don't recurse any further. */ | |
2795 | default: | |
2796 | return subtree; | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | /* Helper function for substitute_object_recurse. */ | |
2801 | static void | |
2802 | substitute_in_interval (interval, arg) | |
2803 | INTERVAL interval; | |
2804 | Lisp_Object arg; | |
2805 | { | |
2806 | Lisp_Object object = Fcar (arg); | |
2807 | Lisp_Object placeholder = Fcdr (arg); | |
2808 | ||
2809 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2810 | } | |
2811 | ||
2812 | \f | |
078e7b4a JB |
2813 | #define LEAD_INT 1 |
2814 | #define DOT_CHAR 2 | |
2815 | #define TRAIL_INT 4 | |
2816 | #define E_CHAR 8 | |
2817 | #define EXP_INT 16 | |
2818 | ||
2819 | int | |
2820 | isfloat_string (cp) | |
2821 | register char *cp; | |
2822 | { | |
c1a2f60a | 2823 | register int state; |
177c0ea7 | 2824 | |
d8578e58 RS |
2825 | char *start = cp; |
2826 | ||
078e7b4a JB |
2827 | state = 0; |
2828 | if (*cp == '+' || *cp == '-') | |
2829 | cp++; | |
2830 | ||
075027b1 | 2831 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2832 | { |
2833 | state |= LEAD_INT; | |
075027b1 RS |
2834 | while (*cp >= '0' && *cp <= '9') |
2835 | cp++; | |
078e7b4a JB |
2836 | } |
2837 | if (*cp == '.') | |
2838 | { | |
2839 | state |= DOT_CHAR; | |
2840 | cp++; | |
2841 | } | |
075027b1 | 2842 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2843 | { |
2844 | state |= TRAIL_INT; | |
075027b1 | 2845 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2846 | cp++; |
2847 | } | |
a35f88bf | 2848 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2849 | { |
2850 | state |= E_CHAR; | |
2851 | cp++; | |
e73997a1 RS |
2852 | if (*cp == '+' || *cp == '-') |
2853 | cp++; | |
078e7b4a | 2854 | } |
078e7b4a | 2855 | |
075027b1 | 2856 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2857 | { |
2858 | state |= EXP_INT; | |
075027b1 | 2859 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2860 | cp++; |
2861 | } | |
d8578e58 RS |
2862 | else if (cp == start) |
2863 | ; | |
eb659c41 RS |
2864 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2865 | { | |
2866 | state |= EXP_INT; | |
2867 | cp += 3; | |
2868 | } | |
2869 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2870 | { | |
2871 | state |= EXP_INT; | |
2872 | cp += 3; | |
2873 | } | |
2874 | ||
37579d7c | 2875 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2876 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2877 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2878 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2879 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2880 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2881 | } |
cc94f3b2 | 2882 | |
078e7b4a JB |
2883 | \f |
2884 | static Lisp_Object | |
c15cfd1f | 2885 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2886 | Lisp_Object readcharfun; |
c15cfd1f | 2887 | int bytecodeflag; |
078e7b4a JB |
2888 | { |
2889 | register int i; | |
2890 | register int size; | |
2891 | register Lisp_Object *ptr; | |
c15cfd1f | 2892 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2893 | register struct Lisp_Cons *otem; |
2894 | Lisp_Object len; | |
2895 | ||
2896 | tem = read_list (1, readcharfun); | |
2897 | len = Flength (tem); | |
2898 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2899 | ||
078e7b4a JB |
2900 | size = XVECTOR (vector)->size; |
2901 | ptr = XVECTOR (vector)->contents; | |
2902 | for (i = 0; i < size; i++) | |
2903 | { | |
c15cfd1f RS |
2904 | item = Fcar (tem); |
2905 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2906 | bytecode object, the docstring containing the bytecode and | |
2907 | constants values must be treated as unibyte and passed to | |
2908 | Fread, to get the actual bytecode string and constants vector. */ | |
2909 | if (bytecodeflag && load_force_doc_strings) | |
2910 | { | |
2911 | if (i == COMPILED_BYTECODE) | |
2912 | { | |
2913 | if (!STRINGP (item)) | |
6fa2b890 | 2914 | error ("Invalid byte code"); |
c15cfd1f RS |
2915 | |
2916 | /* Delay handling the bytecode slot until we know whether | |
2917 | it is lazily-loaded (we can tell by whether the | |
2918 | constants slot is nil). */ | |
2919 | ptr[COMPILED_CONSTANTS] = item; | |
2920 | item = Qnil; | |
2921 | } | |
2922 | else if (i == COMPILED_CONSTANTS) | |
2923 | { | |
2924 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2925 | ||
2926 | if (NILP (item)) | |
2927 | { | |
2928 | /* Coerce string to unibyte (like string-as-unibyte, | |
2929 | but without generating extra garbage and | |
2930 | guaranteeing no change in the contents). */ | |
bee91904 | 2931 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 2932 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
2933 | |
2934 | item = Fread (bytestr); | |
2935 | if (!CONSP (item)) | |
6fa2b890 | 2936 | error ("Invalid byte code"); |
c15cfd1f RS |
2937 | |
2938 | otem = XCONS (item); | |
c1d497be KR |
2939 | bytestr = XCAR (item); |
2940 | item = XCDR (item); | |
c15cfd1f RS |
2941 | free_cons (otem); |
2942 | } | |
2943 | ||
2944 | /* Now handle the bytecode slot. */ | |
2945 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2946 | } | |
2947 | } | |
2948 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2949 | otem = XCONS (tem); |
2950 | tem = Fcdr (tem); | |
2951 | free_cons (otem); | |
2952 | } | |
2953 | return vector; | |
2954 | } | |
177c0ea7 | 2955 | |
6f7f43d5 RS |
2956 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2957 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2958 | and make structure pure. */ |
2959 | ||
2960 | static Lisp_Object | |
2961 | read_list (flag, readcharfun) | |
2962 | int flag; | |
2963 | register Lisp_Object readcharfun; | |
2964 | { | |
2965 | /* -1 means check next element for defun, | |
2966 | 0 means don't check, | |
2967 | 1 means already checked and found defun. */ | |
2968 | int defunflag = flag < 0 ? -1 : 0; | |
2969 | Lisp_Object val, tail; | |
2970 | register Lisp_Object elt, tem; | |
2971 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2972 | /* 0 is the normal case. |
b2a30870 | 2973 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 2974 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 2975 | int doc_reference = 0; |
078e7b4a | 2976 | |
17634846 RS |
2977 | /* Initialize this to 1 if we are reading a list. */ |
2978 | int first_in_list = flag <= 0; | |
2979 | ||
078e7b4a JB |
2980 | val = Qnil; |
2981 | tail = Qnil; | |
2982 | ||
2983 | while (1) | |
2984 | { | |
e28552a4 | 2985 | int ch; |
078e7b4a | 2986 | GCPRO2 (val, tail); |
17634846 | 2987 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2988 | UNGCPRO; |
20ea2964 | 2989 | |
17634846 RS |
2990 | first_in_list = 0; |
2991 | ||
821d417e | 2992 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2993 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2994 | && ! NILP (elt) |
821d417e RS |
2995 | && !NILP (Vpurify_flag)) |
2996 | { | |
2997 | if (NILP (Vdoc_file_name)) | |
2998 | /* We have not yet called Snarf-documentation, so assume | |
2999 | this file is described in the DOC-MM.NN file | |
3000 | and Snarf-documentation will fill in the right value later. | |
3001 | For now, replace the whole list with 0. */ | |
3002 | doc_reference = 1; | |
3003 | else | |
3004 | /* We have already called Snarf-documentation, so make a relative | |
3005 | file name for this file, so it can be found properly | |
3006 | in the installed Lisp directory. | |
3007 | We don't use Fexpand_file_name because that would make | |
3008 | the directory absolute now. */ | |
3009 | elt = concat2 (build_string ("../lisp/"), | |
3010 | Ffile_name_nondirectory (elt)); | |
3011 | } | |
b2a30870 | 3012 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3013 | && ! NILP (elt) |
b2a30870 RS |
3014 | && load_force_doc_strings) |
3015 | doc_reference = 2; | |
20ea2964 | 3016 | |
6428369f | 3017 | if (ch) |
078e7b4a JB |
3018 | { |
3019 | if (flag > 0) | |
3020 | { | |
6428369f | 3021 | if (ch == ']') |
078e7b4a | 3022 | return val; |
821d417e RS |
3023 | Fsignal (Qinvalid_read_syntax, |
3024 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 3025 | } |
6428369f | 3026 | if (ch == ')') |
078e7b4a | 3027 | return val; |
6428369f | 3028 | if (ch == '.') |
078e7b4a JB |
3029 | { |
3030 | GCPRO2 (val, tail); | |
265a9e55 | 3031 | if (!NILP (tail)) |
f5df591a | 3032 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3033 | else |
3034 | val = read0 (readcharfun); | |
17634846 | 3035 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3036 | UNGCPRO; |
6428369f | 3037 | if (ch == ')') |
821d417e RS |
3038 | { |
3039 | if (doc_reference == 1) | |
3040 | return make_number (0); | |
b2a30870 RS |
3041 | if (doc_reference == 2) |
3042 | { | |
3043 | /* Get a doc string from the file we are loading. | |
3044 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 3045 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3046 | /* Position is negative for user variables. */ |
3047 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3048 | if (pos >= saved_doc_string_position |
3049 | && pos < (saved_doc_string_position | |
3050 | + saved_doc_string_length)) | |
3051 | { | |
3052 | int start = pos - saved_doc_string_position; | |
3053 | int from, to; | |
3054 | ||
3055 | /* Process quoting with ^A, | |
3056 | and find the end of the string, | |
3057 | which is marked with ^_ (037). */ | |
3058 | for (from = start, to = start; | |
3059 | saved_doc_string[from] != 037;) | |
3060 | { | |
3061 | int c = saved_doc_string[from++]; | |
3062 | if (c == 1) | |
3063 | { | |
3064 | c = saved_doc_string[from++]; | |
3065 | if (c == 1) | |
3066 | saved_doc_string[to++] = c; | |
3067 | else if (c == '0') | |
3068 | saved_doc_string[to++] = 0; | |
3069 | else if (c == '_') | |
3070 | saved_doc_string[to++] = 037; | |
3071 | } | |
3072 | else | |
3073 | saved_doc_string[to++] = c; | |
3074 | } | |
3075 | ||
3076 | return make_string (saved_doc_string + start, | |
3077 | to - start); | |
3078 | } | |
c15cfd1f RS |
3079 | /* Look in prev_saved_doc_string the same way. */ |
3080 | else if (pos >= prev_saved_doc_string_position | |
3081 | && pos < (prev_saved_doc_string_position | |
3082 | + prev_saved_doc_string_length)) | |
3083 | { | |
3084 | int start = pos - prev_saved_doc_string_position; | |
3085 | int from, to; | |
3086 | ||
3087 | /* Process quoting with ^A, | |
3088 | and find the end of the string, | |
3089 | which is marked with ^_ (037). */ | |
3090 | for (from = start, to = start; | |
3091 | prev_saved_doc_string[from] != 037;) | |
3092 | { | |
3093 | int c = prev_saved_doc_string[from++]; | |
3094 | if (c == 1) | |
3095 | { | |
3096 | c = prev_saved_doc_string[from++]; | |
3097 | if (c == 1) | |
3098 | prev_saved_doc_string[to++] = c; | |
3099 | else if (c == '0') | |
3100 | prev_saved_doc_string[to++] = 0; | |
3101 | else if (c == '_') | |
3102 | prev_saved_doc_string[to++] = 037; | |
3103 | } | |
3104 | else | |
3105 | prev_saved_doc_string[to++] = c; | |
3106 | } | |
3107 | ||
3108 | return make_string (prev_saved_doc_string + start, | |
3109 | to - start); | |
3110 | } | |
b2a30870 | 3111 | else |
6fe9cce5 | 3112 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3113 | } |
3114 | ||
821d417e RS |
3115 | return val; |
3116 | } | |
078e7b4a JB |
3117 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
3118 | } | |
3119 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
3120 | } | |
3121 | tem = (read_pure && flag <= 0 | |
3122 | ? pure_cons (elt, Qnil) | |
3123 | : Fcons (elt, Qnil)); | |
265a9e55 | 3124 | if (!NILP (tail)) |
f5df591a | 3125 | XSETCDR (tail, tem); |
078e7b4a JB |
3126 | else |
3127 | val = tem; | |
3128 | tail = tem; | |
3129 | if (defunflag < 0) | |
3130 | defunflag = EQ (elt, Qdefun); | |
3131 | else if (defunflag > 0) | |
3132 | read_pure = 1; | |
3133 | } | |
3134 | } | |
3135 | \f | |
3136 | Lisp_Object Vobarray; | |
3137 | Lisp_Object initial_obarray; | |
3138 | ||
d007f5c8 RS |
3139 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3140 | ||
3141 | int oblookup_last_bucket_number; | |
3142 | ||
3143 | static int hash_string (); | |
d007f5c8 RS |
3144 | |
3145 | /* Get an error if OBARRAY is not an obarray. | |
3146 | If it is one, return it. */ | |
3147 | ||
078e7b4a JB |
3148 | Lisp_Object |
3149 | check_obarray (obarray) | |
3150 | Lisp_Object obarray; | |
3151 | { | |
cfff016d | 3152 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3153 | { |
3154 | /* If Vobarray is now invalid, force it to be valid. */ | |
3155 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
3156 | ||
3157 | obarray = wrong_type_argument (Qvectorp, obarray); | |
3158 | } | |
3159 | return obarray; | |
3160 | } | |
3161 | ||
d007f5c8 RS |
3162 | /* Intern the C string STR: return a symbol with that name, |
3163 | interned in the current obarray. */ | |
078e7b4a JB |
3164 | |
3165 | Lisp_Object | |
3166 | intern (str) | |
4b2dd274 | 3167 | const char *str; |
078e7b4a JB |
3168 | { |
3169 | Lisp_Object tem; | |
3170 | int len = strlen (str); | |
153a17b7 | 3171 | Lisp_Object obarray; |
078e7b4a | 3172 | |
153a17b7 | 3173 | obarray = Vobarray; |
cfff016d | 3174 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3175 | obarray = check_obarray (obarray); |
e28552a4 | 3176 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3177 | if (SYMBOLP (tem)) |
078e7b4a | 3178 | return tem; |
87631ef7 | 3179 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3180 | } |
4ad679f9 EN |
3181 | |
3182 | /* Create an uninterned symbol with name STR. */ | |
3183 | ||
3184 | Lisp_Object | |
3185 | make_symbol (str) | |
3186 | char *str; | |
3187 | { | |
3188 | int len = strlen (str); | |
3189 | ||
3190 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3191 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3192 | : make_string (str, len))); |
3193 | } | |
d007f5c8 | 3194 | \f |
078e7b4a | 3195 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3196 | doc: /* Return the canonical symbol whose name is STRING. |
3197 | If there is none, one is created by this function and returned. | |
3198 | A second optional argument specifies the obarray to use; | |
3199 | it defaults to the value of `obarray'. */) | |
3200 | (string, obarray) | |
9391b698 | 3201 | Lisp_Object string, obarray; |
078e7b4a JB |
3202 | { |
3203 | register Lisp_Object tem, sym, *ptr; | |
3204 | ||
265a9e55 | 3205 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3206 | obarray = check_obarray (obarray); |
3207 | ||
b7826503 | 3208 | CHECK_STRING (string); |
078e7b4a | 3209 | |
d5db4077 KR |
3210 | tem = oblookup (obarray, SDATA (string), |
3211 | SCHARS (string), | |
3212 | SBYTES (string)); | |
cfff016d | 3213 | if (!INTEGERP (tem)) |
078e7b4a JB |
3214 | return tem; |
3215 | ||
265a9e55 | 3216 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3217 | string = Fpurecopy (string); |
3218 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3219 | |
3220 | if (EQ (obarray, initial_obarray)) | |
3221 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3222 | else | |
3223 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3224 | |
d5db4077 | 3225 | if ((SREF (string, 0) == ':') |
a458d45d | 3226 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3227 | { |
3228 | XSYMBOL (sym)->constant = 1; | |
3229 | XSYMBOL (sym)->value = sym; | |
3230 | } | |
a0549832 | 3231 | |
078e7b4a | 3232 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3233 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3234 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3235 | else | |
3236 | XSYMBOL (sym)->next = 0; | |
3237 | *ptr = sym; | |
3238 | return sym; | |
3239 | } | |
3240 | ||
3241 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3242 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3243 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3244 | symbol is searched for. | |
3245 | A second optional argument specifies the obarray to use; | |
3246 | it defaults to the value of `obarray'. */) | |
3247 | (name, obarray) | |
b55048d4 | 3248 | Lisp_Object name, obarray; |
078e7b4a | 3249 | { |
c2d47f4b | 3250 | register Lisp_Object tem, string; |
078e7b4a | 3251 | |
265a9e55 | 3252 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3253 | obarray = check_obarray (obarray); |
3254 | ||
b55048d4 GM |
3255 | if (!SYMBOLP (name)) |
3256 | { | |
b7826503 | 3257 | CHECK_STRING (name); |
c2d47f4b | 3258 | string = name; |
b55048d4 GM |
3259 | } |
3260 | else | |
c2d47f4b | 3261 | string = SYMBOL_NAME (name); |
078e7b4a | 3262 | |
c2d47f4b | 3263 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3264 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3265 | return Qnil; | |
3266 | else | |
078e7b4a | 3267 | return tem; |
078e7b4a | 3268 | } |
d007f5c8 RS |
3269 | \f |
3270 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3271 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3272 | The value is t if a symbol was found and deleted, nil otherwise. | |
3273 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3274 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3275 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3276 | (name, obarray) | |
d007f5c8 RS |
3277 | Lisp_Object name, obarray; |
3278 | { | |
3279 | register Lisp_Object string, tem; | |
3280 | int hash; | |
3281 | ||
3282 | if (NILP (obarray)) obarray = Vobarray; | |
3283 | obarray = check_obarray (obarray); | |
3284 | ||
3285 | if (SYMBOLP (name)) | |
d4c83cae | 3286 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3287 | else |
3288 | { | |
b7826503 | 3289 | CHECK_STRING (name); |
d007f5c8 RS |
3290 | string = name; |
3291 | } | |
3292 | ||
d5db4077 KR |
3293 | tem = oblookup (obarray, SDATA (string), |
3294 | SCHARS (string), | |
3295 | SBYTES (string)); | |
d007f5c8 RS |
3296 | if (INTEGERP (tem)) |
3297 | return Qnil; | |
3298 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3299 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3300 | return Qnil; | |
3301 | ||
44c6c019 GM |
3302 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3303 | XSYMBOL (tem)->constant = 0; | |
3304 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3305 | |
d007f5c8 RS |
3306 | hash = oblookup_last_bucket_number; |
3307 | ||
3308 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3309 | { |
3310 | if (XSYMBOL (tem)->next) | |
3311 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3312 | else | |
3313 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3314 | } | |
d007f5c8 RS |
3315 | else |
3316 | { | |
3317 | Lisp_Object tail, following; | |
3318 | ||
3319 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3320 | XSYMBOL (tail)->next; | |
3321 | tail = following) | |
3322 | { | |
3323 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3324 | if (EQ (following, tem)) | |
3325 | { | |
3326 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3327 | break; | |
3328 | } | |
3329 | } | |
3330 | } | |
3331 | ||
3332 | return Qt; | |
3333 | } | |
3334 | \f | |
3335 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3336 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3337 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3338 | |
3339 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3340 | |
3341 | Lisp_Object | |
e28552a4 | 3342 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3343 | Lisp_Object obarray; |
4b2dd274 | 3344 | register const char *ptr; |
e28552a4 | 3345 | int size, size_byte; |
078e7b4a | 3346 | { |
7a70b397 RS |
3347 | int hash; |
3348 | int obsize; | |
078e7b4a JB |
3349 | register Lisp_Object tail; |
3350 | Lisp_Object bucket, tem; | |
3351 | ||
cfff016d | 3352 | if (!VECTORP (obarray) |
7c79a684 | 3353 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3354 | { |
3355 | obarray = check_obarray (obarray); | |
3356 | obsize = XVECTOR (obarray)->size; | |
3357 | } | |
519418b3 RS |
3358 | /* This is sometimes needed in the middle of GC. */ |
3359 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3360 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3361 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3362 | hash %= obsize; |
3363 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3364 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3365 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3366 | ; |
cfff016d | 3367 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3368 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3369 | else |
3370 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3371 | { |
d5db4077 KR |
3372 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3373 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3374 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3375 | return tail; |
3376 | else if (XSYMBOL (tail)->next == 0) | |
3377 | break; | |
3378 | } | |
1805de4f | 3379 | XSETINT (tem, hash); |
078e7b4a JB |
3380 | return tem; |
3381 | } | |
3382 | ||
3383 | static int | |
3384 | hash_string (ptr, len) | |
4b2dd274 | 3385 | const unsigned char *ptr; |
078e7b4a JB |
3386 | int len; |
3387 | { | |
4b2dd274 KR |
3388 | register const unsigned char *p = ptr; |
3389 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3390 | register unsigned char c; |
3391 | register int hash = 0; | |
3392 | ||
3393 | while (p != end) | |
3394 | { | |
3395 | c = *p++; | |
3396 | if (c >= 0140) c -= 40; | |
3397 | hash = ((hash<<3) + (hash>>28) + c); | |
3398 | } | |
3399 | return hash & 07777777777; | |
3400 | } | |
d007f5c8 | 3401 | \f |
078e7b4a JB |
3402 | void |
3403 | map_obarray (obarray, fn, arg) | |
3404 | Lisp_Object obarray; | |
d5b28a9d | 3405 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3406 | Lisp_Object arg; |
3407 | { | |
3408 | register int i; | |
3409 | register Lisp_Object tail; | |
b7826503 | 3410 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3411 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3412 | { | |
3413 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3414 | if (SYMBOLP (tail)) |
078e7b4a JB |
3415 | while (1) |
3416 | { | |
3417 | (*fn) (tail, arg); | |
3418 | if (XSYMBOL (tail)->next == 0) | |
3419 | break; | |
1805de4f | 3420 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3421 | } |
3422 | } | |
3423 | } | |
3424 | ||
d5b28a9d | 3425 | void |
078e7b4a JB |
3426 | mapatoms_1 (sym, function) |
3427 | Lisp_Object sym, function; | |
3428 | { | |
3429 | call1 (function, sym); | |
3430 | } | |
3431 | ||
3432 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3433 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3434 | OBARRAY defaults to the value of `obarray'. */) | |
3435 | (function, obarray) | |
078e7b4a JB |
3436 | Lisp_Object function, obarray; |
3437 | { | |
265a9e55 | 3438 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3439 | obarray = check_obarray (obarray); |
3440 | ||
3441 | map_obarray (obarray, mapatoms_1, function); | |
3442 | return Qnil; | |
3443 | } | |
3444 | ||
5e88a39e | 3445 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3446 | |
3447 | void | |
3448 | init_obarray () | |
3449 | { | |
3450 | Lisp_Object oblength; | |
3451 | int hash; | |
3452 | Lisp_Object *tem; | |
3453 | ||
baf69866 | 3454 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3455 | |
491f16a2 | 3456 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3457 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3458 | initial_obarray = Vobarray; | |
3459 | staticpro (&initial_obarray); | |
3460 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3461 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3462 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3463 | |
078e7b4a JB |
3464 | /* These locals are to kludge around a pyramid compiler bug. */ |
3465 | hash = hash_string ("nil", 3); | |
3466 | /* Separate statement here to avoid VAXC bug. */ | |
3467 | hash %= OBARRAY_SIZE; | |
3468 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3469 | *tem = Qnil; | |
3470 | ||
491f16a2 | 3471 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3472 | XSYMBOL (Qnil)->function = Qunbound; |
3473 | XSYMBOL (Qunbound)->value = Qunbound; | |
3474 | XSYMBOL (Qunbound)->function = Qunbound; | |
3475 | ||
3476 | Qt = intern ("t"); | |
3477 | XSYMBOL (Qnil)->value = Qnil; | |
3478 | XSYMBOL (Qnil)->plist = Qnil; | |
3479 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3480 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3481 | |
3482 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3483 | Vpurify_flag = Qt; | |
3484 | ||
3485 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3486 | staticpro (&Qvariable_documentation); |
078e7b4a | 3487 | |
449fea39 | 3488 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3489 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3490 | } |
3491 | \f | |
3492 | void | |
3493 | defsubr (sname) | |
3494 | struct Lisp_Subr *sname; | |
3495 | { | |
3496 | Lisp_Object sym; | |
3497 | sym = intern (sname->symbol_name); | |
1805de4f | 3498 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3499 | } |
3500 | ||
3501 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3502 | void | |
3503 | defalias (sname, string) | |
3504 | struct Lisp_Subr *sname; | |
3505 | char *string; | |
3506 | { | |
3507 | Lisp_Object sym; | |
3508 | sym = intern (string); | |
1805de4f | 3509 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3510 | } |
3511 | #endif /* NOTDEF */ | |
3512 | ||
078e7b4a | 3513 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3514 | to a C variable of type int. Sample call: */ |
5de38842 | 3515 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3516 | void |
e9e00ff2 | 3517 | defvar_int (namestring, address) |
078e7b4a | 3518 | char *namestring; |
31ade731 | 3519 | EMACS_INT *address; |
078e7b4a | 3520 | { |
1a0f90f7 | 3521 | Lisp_Object sym, val; |
078e7b4a | 3522 | sym = intern (namestring); |
1a0f90f7 | 3523 | val = allocate_misc (); |
47e28b2c | 3524 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3525 | XINTFWD (val)->intvar = address; |
44c6c019 | 3526 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3527 | } |
3528 | ||
f0529b5b PJ |
3529 | /* Similar but define a variable whose value is t if address contains 1, |
3530 | nil if address contains 0 */ | |
078e7b4a | 3531 | void |
e9e00ff2 | 3532 | defvar_bool (namestring, address) |
078e7b4a JB |
3533 | char *namestring; |
3534 | int *address; | |
078e7b4a | 3535 | { |
1a0f90f7 | 3536 | Lisp_Object sym, val; |
078e7b4a | 3537 | sym = intern (namestring); |
1a0f90f7 | 3538 | val = allocate_misc (); |
47e28b2c | 3539 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3540 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3541 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3542 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3543 | } |
3544 | ||
1a0f90f7 KH |
3545 | /* Similar but define a variable whose value is the Lisp Object stored |
3546 | at address. Two versions: with and without gc-marking of the C | |
3547 | variable. The nopro version is used when that variable will be | |
3548 | gc-marked for some other reason, since marking the same slot twice | |
3549 | can cause trouble with strings. */ | |
078e7b4a | 3550 | void |
1a0f90f7 | 3551 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3552 | char *namestring; |
3553 | Lisp_Object *address; | |
078e7b4a | 3554 | { |
1a0f90f7 | 3555 | Lisp_Object sym, val; |
078e7b4a | 3556 | sym = intern (namestring); |
1a0f90f7 | 3557 | val = allocate_misc (); |
47e28b2c | 3558 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3559 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3560 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3561 | } |
3562 | ||
078e7b4a | 3563 | void |
1a0f90f7 | 3564 | defvar_lisp (namestring, address) |
078e7b4a JB |
3565 | char *namestring; |
3566 | Lisp_Object *address; | |
078e7b4a | 3567 | { |
1a0f90f7 KH |
3568 | defvar_lisp_nopro (namestring, address); |
3569 | staticpro (address); | |
078e7b4a JB |
3570 | } |
3571 | ||
078e7b4a | 3572 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3573 | the current buffer. address is the address of the slot in the buffer |
3574 | that is current now. */ | |
078e7b4a JB |
3575 | |
3576 | void | |
4360b0c6 | 3577 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3578 | char *namestring; |
3579 | Lisp_Object *address; | |
4360b0c6 | 3580 | Lisp_Object type; |
078e7b4a JB |
3581 | char *doc; |
3582 | { | |
1a0f90f7 | 3583 | Lisp_Object sym, val; |
078e7b4a | 3584 | int offset; |
078e7b4a JB |
3585 | |
3586 | sym = intern (namestring); | |
1a0f90f7 | 3587 | val = allocate_misc (); |
078e7b4a JB |
3588 | offset = (char *)address - (char *)current_buffer; |
3589 | ||
47e28b2c | 3590 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3591 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3592 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3593 | PER_BUFFER_SYMBOL (offset) = sym; |
3594 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3595 | |
11fd416e | 3596 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3597 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3598 | slot of buffer_local_flags */ | |
3599 | abort (); | |
3600 | } | |
3601 | ||
950c215d KH |
3602 | |
3603 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3604 | at a particular offset in the current kboard object. */ |
950c215d KH |
3605 | |
3606 | void | |
4ac38690 | 3607 | defvar_kboard (namestring, offset) |
950c215d KH |
3608 | char *namestring; |
3609 | int offset; | |
3610 | { | |
3611 | Lisp_Object sym, val; | |
3612 | sym = intern (namestring); | |
3613 | val = allocate_misc (); | |
47e28b2c | 3614 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3615 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3616 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3617 | } |
078e7b4a | 3618 | \f |
11938f10 KH |
3619 | /* Record the value of load-path used at the start of dumping |
3620 | so we can see if the site changed it later during dumping. */ | |
3621 | static Lisp_Object dump_path; | |
3622 | ||
d5b28a9d | 3623 | void |
279499f0 | 3624 | init_lread () |
078e7b4a | 3625 | { |
46947372 | 3626 | char *normal; |
e73997a1 | 3627 | int turn_off_warning = 0; |
078e7b4a | 3628 | |
279499f0 | 3629 | /* Compute the default load-path. */ |
46947372 JB |
3630 | #ifdef CANNOT_DUMP |
3631 | normal = PATH_LOADSEARCH; | |
e065a56e | 3632 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3633 | #else |
3634 | if (NILP (Vpurify_flag)) | |
3635 | normal = PATH_LOADSEARCH; | |
279499f0 | 3636 | else |
46947372 | 3637 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3638 | |
46947372 JB |
3639 | /* In a dumped Emacs, we normally have to reset the value of |
3640 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3641 | uses ../lisp, instead of the path of the installed elisp | |
3642 | libraries. However, if it appears that Vload_path was changed | |
3643 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3644 | if (initialized) |
3645 | { | |
4746118a | 3646 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3647 | { |
3648 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3649 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3650 | { |
3ddff138 RS |
3651 | Lisp_Object tem, tem1, sitelisp; |
3652 | ||
3653 | /* Remove site-lisp dirs from path temporarily and store | |
3654 | them in sitelisp, then conc them on at the end so | |
3655 | they're always first in path. */ | |
3656 | sitelisp = Qnil; | |
3657 | while (1) | |
3658 | { | |
3659 | tem = Fcar (Vload_path); | |
3660 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3661 | tem, Qnil); | |
3662 | if (!NILP (tem1)) | |
3663 | { | |
3664 | Vload_path = Fcdr (Vload_path); | |
3665 | sitelisp = Fcons (tem, sitelisp); | |
3666 | } | |
3667 | else | |
3668 | break; | |
3669 | } | |
3670 | ||
74180aa4 | 3671 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3672 | installation dir, if it exists. */ |
74180aa4 RS |
3673 | tem = Fexpand_file_name (build_string ("lisp"), |
3674 | Vinstallation_directory); | |
3a3056e5 RS |
3675 | tem1 = Ffile_exists_p (tem); |
3676 | if (!NILP (tem1)) | |
3677 | { | |
3678 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3679 | { |
3680 | turn_off_warning = 1; | |
3ddff138 | 3681 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3682 | } |
3a3056e5 RS |
3683 | } |
3684 | else | |
3685 | /* That dir doesn't exist, so add the build-time | |
3686 | Lisp dirs instead. */ | |
3687 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3688 | |
9fbc0116 RS |
3689 | /* Add leim under the installation dir, if it exists. */ |
3690 | tem = Fexpand_file_name (build_string ("leim"), | |
3691 | Vinstallation_directory); | |
3692 | tem1 = Ffile_exists_p (tem); | |
3693 | if (!NILP (tem1)) | |
3694 | { | |
3695 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3696 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3697 | } |
3698 | ||
c478f98c RS |
3699 | /* Add site-list under the installation dir, if it exists. */ |
3700 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3701 | Vinstallation_directory); | |
3702 | tem1 = Ffile_exists_p (tem); | |
3703 | if (!NILP (tem1)) | |
3704 | { | |
3705 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3706 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3707 | } |
0f337465 RS |
3708 | |
3709 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3710 | and it is run from where it was built, add to load-path |
3711 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3712 | |
3713 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3714 | { | |
33046fc9 RS |
3715 | Lisp_Object tem2; |
3716 | ||
0f337465 RS |
3717 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3718 | Vinstallation_directory); | |
3719 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3720 | |
3721 | /* Don't be fooled if they moved the entire source tree | |
3722 | AFTER dumping Emacs. If the build directory is indeed | |
3723 | different from the source dir, src/Makefile.in and | |
3724 | src/Makefile will not be found together. */ | |
3725 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3726 | Vinstallation_directory); | |
3727 | tem2 = Ffile_exists_p (tem); | |
3728 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3729 | { |
3730 | tem = Fexpand_file_name (build_string ("lisp"), | |
3731 | Vsource_directory); | |
3732 | ||
3733 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3734 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3735 | |
9fbc0116 RS |
3736 | tem = Fexpand_file_name (build_string ("leim"), |
3737 | Vsource_directory); | |
3738 | ||
3739 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3740 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3741 | |
0f337465 RS |
3742 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3743 | Vsource_directory); | |
3744 | ||
3745 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3746 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3747 | } |
3748 | } | |
3ddff138 RS |
3749 | if (!NILP (sitelisp)) |
3750 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3751 | } |
3752 | } | |
4746118a JB |
3753 | } |
3754 | else | |
11938f10 | 3755 | { |
7b396c6c RS |
3756 | /* NORMAL refers to the lisp dir in the source directory. */ |
3757 | /* We used to add ../lisp at the front here, but | |
3758 | that caused trouble because it was copied from dump_path | |
3759 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3760 | It should be unnecessary. */ | |
3761 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3762 | dump_path = Vload_path; |
3763 | } | |
46947372 | 3764 | #endif |
279499f0 | 3765 | |
536d6baa | 3766 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3767 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3768 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3769 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3770 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3771 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3772 | the "standard" paths may not exist and would be overridden by | |
3773 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3774 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3775 | |
078e7b4a | 3776 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3777 | if (!turn_off_warning) |
3778 | { | |
3779 | Lisp_Object path_tail; | |
078e7b4a | 3780 | |
e73997a1 RS |
3781 | for (path_tail = Vload_path; |
3782 | !NILP (path_tail); | |
c1d497be | 3783 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3784 | { |
3785 | Lisp_Object dirfile; | |
3786 | dirfile = Fcar (path_tail); | |
3787 | if (STRINGP (dirfile)) | |
3788 | { | |
3789 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3790 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3791 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3792 | XCAR (path_tail)); |
e73997a1 RS |
3793 | } |
3794 | } | |
3795 | } | |
536d6baa | 3796 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3797 | |
3798 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3799 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3800 | #ifndef CANNOT_DUMP |
46947372 JB |
3801 | if (NILP (Vpurify_flag) |
3802 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3803 | #endif |
279499f0 | 3804 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3805 | |
3806 | Vvalues = Qnil; | |
3807 | ||
078e7b4a | 3808 | load_in_progress = 0; |
4e53f562 | 3809 | Vload_file_name = Qnil; |
d2c6be7f RS |
3810 | |
3811 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3812 | |
3813 | Vstandard_input = Qt; | |
f74b0705 | 3814 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3815 | } |
3816 | ||
85496b8c RS |
3817 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3818 | does not exist. Print it on stderr and put it in *Message*. */ | |
3819 | ||
d5b28a9d | 3820 | void |
85496b8c RS |
3821 | dir_warning (format, dirname) |
3822 | char *format; | |
3823 | Lisp_Object dirname; | |
3824 | { | |
3825 | char *buffer | |
d5db4077 | 3826 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3827 | |
d5db4077 KR |
3828 | fprintf (stderr, format, SDATA (dirname)); |
3829 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
3830 | /* Don't log the warning before we've initialized!! */ |
3831 | if (initialized) | |
3832 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3833 | } |
3834 | ||
078e7b4a | 3835 | void |
279499f0 | 3836 | syms_of_lread () |
078e7b4a JB |
3837 | { |
3838 | defsubr (&Sread); | |
3839 | defsubr (&Sread_from_string); | |
3840 | defsubr (&Sintern); | |
3841 | defsubr (&Sintern_soft); | |
d007f5c8 | 3842 | defsubr (&Sunintern); |
078e7b4a | 3843 | defsubr (&Sload); |
228d4b1c | 3844 | defsubr (&Seval_buffer); |
078e7b4a JB |
3845 | defsubr (&Seval_region); |
3846 | defsubr (&Sread_char); | |
3847 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3848 | defsubr (&Sread_event); |
078e7b4a JB |
3849 | defsubr (&Sget_file_char); |
3850 | defsubr (&Smapatoms); | |
86d00812 | 3851 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
3852 | |
3853 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
3854 | doc: /* Symbol table for use by `intern' and `read'. |
3855 | It is a vector whose length ought to be prime for best results. | |
3856 | The vector's contents don't make sense if examined from Lisp programs; | |
3857 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
3858 | |
3859 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
3860 | doc: /* List of values of all expressions which were read, evaluated and printed. |
3861 | Order is reverse chronological. */); | |
078e7b4a JB |
3862 | |
3863 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
3864 | doc: /* Stream for read to get input from. |
3865 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
3866 | Vstandard_input = Qt; |
3867 | ||
abb13b09 CW |
3868 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
3869 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
3870 | ||
3871 | If this variable is a buffer, then only forms read from that buffer | |
3872 | will be added to `read-symbol-positions-list'. | |
3873 | If this variable is t, then all read forms will be added. | |
3874 | The effect of all other values other than nil are not currently | |
3875 | defined, although they may be in the future. | |
3876 | ||
3877 | The positions are relative to the last call to `read' or | |
3878 | `read-from-string'. It is probably a bad idea to set this variable at | |
3879 | the toplevel; bind it instead. */); | |
3880 | Vread_with_symbol_positions = Qnil; | |
3881 | ||
3882 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 3883 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
3884 | This variable is modified during calls to `read' or |
3885 | `read-from-string', but only when `read-with-symbol-positions' is | |
3886 | non-nil. | |
3887 | ||
3888 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 3889 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
3890 | symbol from the position where `read' or `read-from-string' started. |
3891 | ||
3892 | Note that a symbol will appear multiple times in this list, if it was | |
3893 | read multiple times. The list is in the same order as the symbols | |
3894 | were read in. */); | |
177c0ea7 | 3895 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 3896 | |
078e7b4a | 3897 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
3898 | doc: /* *List of directories to search for files to load. |
3899 | Each element is a string (directory name) or nil (try default directory). | |
3900 | Initialized based on EMACSLOADPATH environment variable, if any, | |
3901 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 3902 | |
e61b9b87 | 3903 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
5de38842 PJ |
3904 | doc: /* *List of suffixes to try for files to load. |
3905 | This list should not include the empty string. */); | |
e61b9b87 SM |
3906 | Vload_suffixes = Fcons (build_string (".elc"), |
3907 | Fcons (build_string (".el"), Qnil)); | |
ddb716ef SM |
3908 | /* We don't use empty_string because it's not initialized yet. */ |
3909 | default_suffixes = Fcons (build_string (""), Qnil); | |
e61b9b87 SM |
3910 | staticpro (&default_suffixes); |
3911 | ||
078e7b4a | 3912 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
5de38842 | 3913 | doc: /* Non-nil iff inside of `load'. */); |
078e7b4a JB |
3914 | |
3915 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 PJ |
3916 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
3917 | Each element looks like (FILENAME FORMS...). | |
3918 | When `load' is run and the file-name argument is FILENAME, | |
3919 | the FORMS in the corresponding element are executed at the end of loading. | |
3920 | ||
3921 | FILENAME must match exactly! Normally FILENAME is the name of a library, | |
3922 | with no directory specified, since that is how `load' is normally called. | |
3923 | An error in FORMS does not undo the load, | |
3924 | but does prevent execution of the rest of the FORMS. | |
3925 | FILENAME can also be a symbol (a feature) and FORMS are then executed | |
3926 | when the corresponding call to `provide' is made. */); | |
078e7b4a JB |
3927 | Vafter_load_alist = Qnil; |
3928 | ||
ae321d28 | 3929 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 3930 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
3931 | Each alist element is a list that starts with a file name, |
3932 | except for one element (optional) that starts with nil and describes | |
3933 | definitions evaluated from buffers not visiting files. | |
1bc2cdb1 | 3934 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 3935 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
1bc2cdb1 RS |
3936 | `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'. |
3937 | An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)', | |
6042a06e | 3938 | and means that SYMBOL was an autoload before this file redefined it |
0fc213e9 RS |
3939 | as a function. |
3940 | ||
b502a9a1 RS |
3941 | During preloading, the file name recorded is relative to the main Lisp |
3942 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
3943 | Vload_history = Qnil; |
3944 | ||
20ea2964 | 3945 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 3946 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
3947 | Vload_file_name = Qnil; |
3948 | ||
4116ab9f | 3949 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 3950 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
3951 | If the file loaded had extension `.elc', and the corresponding source file |
3952 | exists, this variable contains the name of source file, suitable for use | |
5de38842 | 3953 | by functions like `custom-save-all' which edit the init file. */); |
4116ab9f KH |
3954 | Vuser_init_file = Qnil; |
3955 | ||
8a1f1537 | 3956 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 3957 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
3958 | Vcurrent_load_list = Qnil; |
3959 | ||
84a15045 | 3960 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
3961 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
3962 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
3963 | Vload_read_function = Qnil; |
3964 | ||
fe0e03f3 | 3965 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
5de38842 PJ |
3966 | doc: /* Function called in `load' for loading an Emacs lisp source file. |
3967 | This function is for doing code conversion before reading the source file. | |
3968 | If nil, loading is done without any code conversion. | |
3969 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
3970 | FULLNAME is the full name of FILE. | |
3971 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
3972 | Vload_source_file_function = Qnil; |
3973 | ||
b2a30870 | 3974 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
3975 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
3976 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
3977 | load_force_doc_strings = 0; |
3978 | ||
94e554db | 3979 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
3980 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
3981 | This is normally bound by `load' and `eval-buffer' to control `read', | |
3982 | and is not meant for users to change. */); | |
94e554db RS |
3983 | load_convert_to_unibyte = 0; |
3984 | ||
1521a8fa | 3985 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
3986 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
3987 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
3988 | Vsource_directory |
3989 | = Fexpand_file_name (build_string ("../"), | |
3990 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3991 | ||
4b104c41 | 3992 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 3993 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
3994 | Vpreloaded_file_list = Qnil; |
3995 | ||
1ffcc3b1 | 3996 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 3997 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
3998 | Vbyte_boolean_vars = Qnil; |
3999 | ||
da84f340 | 4000 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4001 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4002 | Some versions of XEmacs use different byte codes than Emacs. These | |
4003 | incompatible byte codes can make Emacs crash when it tries to execute | |
4004 | them. */); | |
da84f340 GM |
4005 | load_dangerous_libraries = 0; |
4006 | ||
bb970e67 | 4007 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4008 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4009 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4010 | from the file, and matches them against this regular expression. | |
4011 | When the regular expression matches, the file is considered to be safe | |
4012 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4013 | Vbytecomp_version_regexp |
f2e7d5eb | 4014 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4015 | |
3f39f996 RS |
4016 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4017 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4018 | Veval_buffer_list = Qnil; | |
4019 | ||
a90ba1e2 KH |
4020 | /* Vsource_directory was initialized in init_lread. */ |
4021 | ||
d2c6be7f RS |
4022 | load_descriptor_list = Qnil; |
4023 | staticpro (&load_descriptor_list); | |
4024 | ||
8a1f1537 RS |
4025 | Qcurrent_load_list = intern ("current-load-list"); |
4026 | staticpro (&Qcurrent_load_list); | |
4027 | ||
078e7b4a JB |
4028 | Qstandard_input = intern ("standard-input"); |
4029 | staticpro (&Qstandard_input); | |
4030 | ||
4031 | Qread_char = intern ("read-char"); | |
4032 | staticpro (&Qread_char); | |
4033 | ||
4034 | Qget_file_char = intern ("get-file-char"); | |
4035 | staticpro (&Qget_file_char); | |
7bd279cd | 4036 | |
17634846 RS |
4037 | Qbackquote = intern ("`"); |
4038 | staticpro (&Qbackquote); | |
4039 | Qcomma = intern (","); | |
4040 | staticpro (&Qcomma); | |
4041 | Qcomma_at = intern (",@"); | |
4042 | staticpro (&Qcomma_at); | |
4043 | Qcomma_dot = intern (",."); | |
4044 | staticpro (&Qcomma_dot); | |
4045 | ||
74549846 RS |
4046 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4047 | staticpro (&Qinhibit_file_name_operation); | |
4048 | ||
7bd279cd RS |
4049 | Qascii_character = intern ("ascii-character"); |
4050 | staticpro (&Qascii_character); | |
c2225d00 | 4051 | |
2b6cae0c RS |
4052 | Qfunction = intern ("function"); |
4053 | staticpro (&Qfunction); | |
4054 | ||
c2225d00 RS |
4055 | Qload = intern ("load"); |
4056 | staticpro (&Qload); | |
20ea2964 RS |
4057 | |
4058 | Qload_file_name = intern ("load-file-name"); | |
4059 | staticpro (&Qload_file_name); | |
11938f10 | 4060 | |
3f39f996 RS |
4061 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4062 | staticpro (&Qeval_buffer_list); | |
4063 | ||
11938f10 | 4064 | staticpro (&dump_path); |
4ad679f9 EN |
4065 | |
4066 | staticpro (&read_objects); | |
4067 | read_objects = Qnil; | |
9e062b6c | 4068 | staticpro (&seen_list); |
f153db13 | 4069 | seen_list = Qnil; |
177c0ea7 | 4070 | |
7ee3bd7b GM |
4071 | Vloads_in_progress = Qnil; |
4072 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4073 | } |
ab5796a9 MB |
4074 | |
4075 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4076 | (do not change this comment) */ |