Commit | Line | Data |
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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; |
6bb6da3e | 90 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd RS |
91 | |
92 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 93 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 94 | |
9942fa0c | 95 | /* non-zero iff inside `load' */ |
078e7b4a JB |
96 | int load_in_progress; |
97 | ||
1521a8fa RS |
98 | /* Directory in which the sources were found. */ |
99 | Lisp_Object Vsource_directory; | |
100 | ||
e61b9b87 | 101 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 102 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 103 | |
4116ab9f KH |
104 | /* File name of user's init file. */ |
105 | Lisp_Object Vuser_init_file; | |
106 | ||
ae321d28 RS |
107 | /* This is the user-visible association list that maps features to |
108 | lists of defs in their load files. */ | |
109 | Lisp_Object Vload_history; | |
110 | ||
20ea2964 | 111 | /* This is used to build the load history. */ |
ae321d28 RS |
112 | Lisp_Object Vcurrent_load_list; |
113 | ||
4b104c41 RS |
114 | /* List of files that were preloaded. */ |
115 | Lisp_Object Vpreloaded_file_list; | |
116 | ||
20ea2964 RS |
117 | /* Name of file actually being read by `load'. */ |
118 | Lisp_Object Vload_file_name; | |
119 | ||
84a15045 RS |
120 | /* Function to use for reading, in `load' and friends. */ |
121 | Lisp_Object Vload_read_function; | |
122 | ||
4ad679f9 EN |
123 | /* The association list of objects read with the #n=object form. |
124 | Each member of the list has the form (n . object), and is used to | |
125 | look up the object for the corresponding #n# construct. | |
126 | It must be set to nil before all top-level calls to read0. */ | |
127 | Lisp_Object read_objects; | |
128 | ||
b2a30870 RS |
129 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
130 | static int load_force_doc_strings; | |
131 | ||
94e554db RS |
132 | /* Nonzero means read should convert strings to unibyte. */ |
133 | static int load_convert_to_unibyte; | |
134 | ||
fe0e03f3 KH |
135 | /* Function to use for loading an Emacs lisp source file (not |
136 | compiled) instead of readevalloop. */ | |
137 | Lisp_Object Vload_source_file_function; | |
138 | ||
1ffcc3b1 DL |
139 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
140 | Lisp_Object Vbyte_boolean_vars; | |
141 | ||
abb13b09 CW |
142 | /* Whether or not to add a `read-positions' property to symbols |
143 | read. */ | |
144 | Lisp_Object Vread_with_symbol_positions; | |
145 | ||
146 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
147 | Lisp_Object Vread_symbol_positions_list; | |
148 | ||
d2c6be7f RS |
149 | /* List of descriptors now open for Fload. */ |
150 | static Lisp_Object load_descriptor_list; | |
151 | ||
b2a30870 | 152 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
153 | static FILE *instream; |
154 | ||
155 | /* When nonzero, read conses in pure space */ | |
156 | static int read_pure; | |
157 | ||
b2a30870 | 158 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 159 | static int read_from_string_index; |
bed23cb2 | 160 | static int read_from_string_index_byte; |
078e7b4a | 161 | static int read_from_string_limit; |
17634846 | 162 | |
6f7f43d5 RS |
163 | /* Number of bytes left to read in the buffer character |
164 | that `readchar' has already advanced over. */ | |
165 | static int readchar_backlog; | |
abb13b09 CW |
166 | /* Number of characters read in the current call to Fread or |
167 | Fread_from_string. */ | |
168 | static int readchar_count; | |
6f7f43d5 | 169 | |
c15cfd1f | 170 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
171 | static char *saved_doc_string; |
172 | /* Length of buffer allocated in saved_doc_string. */ | |
173 | static int saved_doc_string_size; | |
174 | /* Length of actual data in saved_doc_string. */ | |
175 | static int saved_doc_string_length; | |
176 | /* This is the file position that string came from. */ | |
68c45bf0 | 177 | static file_offset saved_doc_string_position; |
b2a30870 | 178 | |
c15cfd1f RS |
179 | /* This contains the previous string skipped with #@. |
180 | We copy it from saved_doc_string when a new string | |
181 | is put in saved_doc_string. */ | |
182 | static char *prev_saved_doc_string; | |
183 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
184 | static int prev_saved_doc_string_size; | |
185 | /* Length of actual data in prev_saved_doc_string. */ | |
186 | static int prev_saved_doc_string_length; | |
187 | /* This is the file position that string came from. */ | |
68c45bf0 | 188 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 189 | |
17634846 RS |
190 | /* Nonzero means inside a new-style backquote |
191 | with no surrounding parentheses. | |
192 | Fread initializes this to zero, so we need not specbind it | |
193 | or worry about what happens to it when there is an error. */ | |
194 | static int new_backquote_flag; | |
7ee3bd7b GM |
195 | |
196 | /* A list of file names for files being loaded in Fload. Used to | |
197 | check for recursive loads. */ | |
198 | ||
9942fa0c | 199 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 200 | |
550a625e GM |
201 | /* Non-zero means load dangerous compiled Lisp files. */ |
202 | ||
203 | int load_dangerous_libraries; | |
204 | ||
205 | /* A regular expression used to detect files compiled with Emacs. */ | |
206 | ||
207 | static Lisp_Object Vbytecomp_version_regexp; | |
208 | ||
a742d646 | 209 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 210 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 211 | Lisp_Object (*) (), int, |
4c03c46d | 212 | Lisp_Object, Lisp_Object, |
550a625e GM |
213 | Lisp_Object, Lisp_Object)); |
214 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
215 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
216 | ||
078e7b4a JB |
217 | \f |
218 | /* Handle unreading and rereading of characters. | |
219 | Write READCHAR to read a character, | |
fe0e03f3 KH |
220 | UNREAD(c) to unread c to be read again. |
221 | ||
abb13b09 CW |
222 | The READCHAR and UNREAD macros are meant for reading/unreading a |
223 | byte code; they do not handle multibyte characters. The caller | |
224 | should manage them if necessary. | |
177c0ea7 | 225 | |
abb13b09 CW |
226 | [ Actually that seems to be a lie; READCHAR will definitely read |
227 | multibyte characters from buffer sources, at least. Is the | |
228 | comment just out of date? | |
229 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 230 | */ |
078e7b4a JB |
231 | |
232 | #define READCHAR readchar (readcharfun) | |
233 | #define UNREAD(c) unreadchar (readcharfun, c) | |
234 | ||
235 | static int | |
236 | readchar (readcharfun) | |
237 | Lisp_Object readcharfun; | |
238 | { | |
239 | Lisp_Object tem; | |
95384e1e | 240 | register int c; |
078e7b4a | 241 | |
abb13b09 | 242 | readchar_count++; |
177c0ea7 | 243 | |
cfff016d | 244 | if (BUFFERP (readcharfun)) |
078e7b4a | 245 | { |
bed23cb2 | 246 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 247 | |
bed23cb2 RS |
248 | int pt_byte = BUF_PT_BYTE (inbuffer); |
249 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 250 | |
00a9a935 RS |
251 | if (readchar_backlog > 0) |
252 | /* We get the address of the byte just passed, | |
253 | which is the last byte of the character. | |
254 | The other bytes in this character are consecutive with it, | |
255 | because the gap can't be in the middle of a character. */ | |
256 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
257 | - --readchar_backlog); | |
258 | ||
bed23cb2 RS |
259 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
260 | return -1; | |
078e7b4a | 261 | |
00a9a935 RS |
262 | readchar_backlog = -1; |
263 | ||
bed23cb2 RS |
264 | if (! NILP (inbuffer->enable_multibyte_characters)) |
265 | { | |
00a9a935 | 266 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
267 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
268 | BUF_INC_POS (inbuffer, pt_byte); | |
269 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
270 | } | |
271 | else | |
272 | { | |
273 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
274 | pt_byte++; | |
6f7f43d5 | 275 | } |
bed23cb2 | 276 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 277 | |
bed23cb2 | 278 | return c; |
078e7b4a | 279 | } |
cfff016d | 280 | if (MARKERP (readcharfun)) |
078e7b4a | 281 | { |
bed23cb2 | 282 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 283 | |
bed23cb2 RS |
284 | int bytepos = marker_byte_position (readcharfun); |
285 | int orig_bytepos = bytepos; | |
6f7f43d5 | 286 | |
00a9a935 RS |
287 | if (readchar_backlog > 0) |
288 | /* We get the address of the byte just passed, | |
289 | which is the last byte of the character. | |
290 | The other bytes in this character are consecutive with it, | |
291 | because the gap can't be in the middle of a character. */ | |
292 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
293 | - --readchar_backlog); | |
294 | ||
bed23cb2 RS |
295 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
296 | return -1; | |
6f7f43d5 | 297 | |
00a9a935 RS |
298 | readchar_backlog = -1; |
299 | ||
bed23cb2 RS |
300 | if (! NILP (inbuffer->enable_multibyte_characters)) |
301 | { | |
00a9a935 | 302 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
303 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
304 | BUF_INC_POS (inbuffer, bytepos); | |
305 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
306 | } | |
307 | else | |
308 | { | |
309 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
310 | bytepos++; | |
6f7f43d5 RS |
311 | } |
312 | ||
bed23cb2 RS |
313 | XMARKER (readcharfun)->bytepos = bytepos; |
314 | XMARKER (readcharfun)->charpos++; | |
315 | ||
316 | return c; | |
078e7b4a | 317 | } |
ad0153e4 RS |
318 | |
319 | if (EQ (readcharfun, Qlambda)) | |
320 | return read_bytecode_char (0); | |
321 | ||
078e7b4a | 322 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
323 | { |
324 | c = getc (instream); | |
325 | #ifdef EINTR | |
326 | /* Interrupted reads have been observed while reading over the network */ | |
327 | while (c == EOF && ferror (instream) && errno == EINTR) | |
328 | { | |
495bf630 | 329 | QUIT; |
2c1b5dbe KH |
330 | clearerr (instream); |
331 | c = getc (instream); | |
332 | } | |
333 | #endif | |
334 | return c; | |
335 | } | |
078e7b4a | 336 | |
cfff016d | 337 | if (STRINGP (readcharfun)) |
078e7b4a | 338 | { |
bed23cb2 | 339 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 340 | c = -1; |
f0354c03 | 341 | else |
bed23cb2 RS |
342 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
343 | read_from_string_index, | |
344 | read_from_string_index_byte); | |
6f7f43d5 | 345 | |
078e7b4a JB |
346 | return c; |
347 | } | |
348 | ||
349 | tem = call0 (readcharfun); | |
350 | ||
265a9e55 | 351 | if (NILP (tem)) |
078e7b4a JB |
352 | return -1; |
353 | return XINT (tem); | |
354 | } | |
355 | ||
356 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
357 | If the stream is a user function, call it with the char as argument. */ | |
358 | ||
359 | static void | |
360 | unreadchar (readcharfun, c) | |
361 | Lisp_Object readcharfun; | |
362 | int c; | |
363 | { | |
abb13b09 | 364 | readchar_count--; |
92fddec9 KH |
365 | if (c == -1) |
366 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
367 | since readchar didn't advance it when we read it. */ | |
368 | ; | |
cfff016d | 369 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 370 | { |
bed23cb2 RS |
371 | struct buffer *b = XBUFFER (readcharfun); |
372 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 373 | |
00a9a935 RS |
374 | if (readchar_backlog >= 0) |
375 | readchar_backlog++; | |
bed23cb2 | 376 | else |
00a9a935 RS |
377 | { |
378 | BUF_PT (b)--; | |
379 | if (! NILP (b->enable_multibyte_characters)) | |
380 | BUF_DEC_POS (b, bytepos); | |
381 | else | |
382 | bytepos--; | |
d7760ca9 | 383 | |
00a9a935 RS |
384 | BUF_PT_BYTE (b) = bytepos; |
385 | } | |
d7760ca9 | 386 | } |
cfff016d | 387 | else if (MARKERP (readcharfun)) |
d7760ca9 | 388 | { |
bed23cb2 RS |
389 | struct buffer *b = XMARKER (readcharfun)->buffer; |
390 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 391 | |
00a9a935 RS |
392 | if (readchar_backlog >= 0) |
393 | readchar_backlog++; | |
bed23cb2 | 394 | else |
00a9a935 RS |
395 | { |
396 | XMARKER (readcharfun)->charpos--; | |
397 | if (! NILP (b->enable_multibyte_characters)) | |
398 | BUF_DEC_POS (b, bytepos); | |
399 | else | |
400 | bytepos--; | |
d7760ca9 | 401 | |
00a9a935 RS |
402 | XMARKER (readcharfun)->bytepos = bytepos; |
403 | } | |
d7760ca9 | 404 | } |
cfff016d | 405 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
406 | { |
407 | read_from_string_index--; | |
408 | read_from_string_index_byte | |
409 | = string_char_to_byte (readcharfun, read_from_string_index); | |
410 | } | |
ad0153e4 RS |
411 | else if (EQ (readcharfun, Qlambda)) |
412 | read_bytecode_char (1); | |
078e7b4a JB |
413 | else if (EQ (readcharfun, Qget_file_char)) |
414 | ungetc (c, instream); | |
415 | else | |
416 | call1 (readcharfun, make_number (c)); | |
417 | } | |
418 | ||
abb13b09 CW |
419 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
420 | Lisp_Object)); | |
421 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 422 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
423 | |
424 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
425 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
426 | static int read_multibyte P_ ((int, Lisp_Object)); | |
427 | ||
428 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
429 | Lisp_Object)); | |
430 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
431 | Lisp_Object)); | |
432 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 433 | |
078e7b4a | 434 | \f |
bed23cb2 | 435 | /* Get a character from the tty. */ |
078e7b4a | 436 | |
3d9b22be JB |
437 | extern Lisp_Object read_char (); |
438 | ||
f42be754 JB |
439 | /* Read input events until we get one that's acceptable for our purposes. |
440 | ||
441 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
442 | until we get a character we like, and then stuffed into | |
443 | unread_switch_frame. | |
444 | ||
445 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
446 | if the unmodified version of the symbol has a Qascii_character | |
447 | property, and use that character, if present. | |
448 | ||
449 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
450 | get isn't an ASCII character with modifiers. If it's zero but | |
451 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
452 | character. |
453 | ||
454 | If INPUT_METHOD is nonzero, we invoke the current input method | |
455 | if the character warrants that. */ | |
cc39bc38 | 456 | |
f42be754 | 457 | Lisp_Object |
bb49a192 RS |
458 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
459 | input_method) | |
460 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 461 | { |
4332cf50 | 462 | Lisp_Object val, delayed_switch_frame; |
153a17b7 | 463 | |
5dbf89bc | 464 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
465 | if (display_hourglass_p) |
466 | cancel_hourglass (); | |
5dbf89bc | 467 | #endif |
177c0ea7 | 468 | |
153a17b7 | 469 | delayed_switch_frame = Qnil; |
f42be754 JB |
470 | |
471 | /* Read until we get an acceptable event. */ | |
472 | retry: | |
bb49a192 RS |
473 | val = read_char (0, 0, 0, |
474 | (input_method ? Qnil : Qt), | |
475 | 0); | |
f42be754 | 476 | |
cfff016d | 477 | if (BUFFERP (val)) |
6c82d689 KH |
478 | goto retry; |
479 | ||
f42be754 | 480 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 481 | character. This is better than signaling an error just because |
f42be754 JB |
482 | the last characters were typed to a separate minibuffer frame, |
483 | for example. Eventually, some code which can deal with | |
484 | switch-frame events will read it and process it. */ | |
485 | if (no_switch_frame | |
486 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 487 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
488 | { |
489 | delayed_switch_frame = val; | |
490 | goto retry; | |
491 | } | |
492 | ||
493 | if (ascii_required) | |
494 | { | |
495 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 496 | if (SYMBOLP (val)) |
f42be754 | 497 | { |
95384e1e | 498 | Lisp_Object tem, tem1; |
f42be754 JB |
499 | tem = Fget (val, Qevent_symbol_element_mask); |
500 | if (!NILP (tem)) | |
501 | { | |
502 | tem1 = Fget (Fcar (tem), Qascii_character); | |
503 | /* Merge this symbol's modifier bits | |
504 | with the ASCII equivalent of its basic code. */ | |
505 | if (!NILP (tem1)) | |
baf69866 | 506 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
507 | } |
508 | } | |
177c0ea7 | 509 | |
f42be754 | 510 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 511 | if (!INTEGERP (val)) |
f42be754 JB |
512 | { |
513 | if (error_nonascii) | |
514 | { | |
1ec84625 | 515 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
516 | error ("Non-character input-event"); |
517 | } | |
518 | else | |
519 | goto retry; | |
520 | } | |
521 | } | |
522 | ||
523 | if (! NILP (delayed_switch_frame)) | |
524 | unread_switch_frame = delayed_switch_frame; | |
525 | ||
67868d27 PJ |
526 | #if 0 |
527 | ||
5dbf89bc | 528 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
529 | if (display_hourglass_p) |
530 | start_hourglass (); | |
5dbf89bc | 531 | #endif |
67868d27 PJ |
532 | |
533 | #endif | |
534 | ||
f42be754 | 535 | return val; |
f42be754 JB |
536 | } |
537 | ||
bb49a192 | 538 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
5de38842 PJ |
539 | doc: /* Read a character from the command input (keyboard or macro). |
540 | It is returned as a number. | |
541 | If the user generates an event which is not a character (i.e. a mouse | |
542 | click or function key event), `read-char' signals an error. As an | |
543 | exception, switch-frame events are put off until non-ASCII events can | |
544 | be read. | |
545 | If you want to read non-character events, or ignore them, call | |
546 | `read-event' or `read-char-exclusive' instead. | |
547 | ||
548 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
549 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
550 | input method is turned on in the current buffer, that input method | |
551 | is used for reading a character. */) | |
552 | (prompt, inherit_input_method) | |
fc351d2f | 553 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 554 | { |
bb49a192 RS |
555 | if (! NILP (prompt)) |
556 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 557 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
558 | } |
559 | ||
bb49a192 | 560 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
5de38842 PJ |
561 | doc: /* Read an event object from the input stream. |
562 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
563 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
564 | input method is turned on in the current buffer, that input method | |
565 | is used for reading a character. */) | |
566 | (prompt, inherit_input_method) | |
fc351d2f | 567 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 568 | { |
bb49a192 RS |
569 | if (! NILP (prompt)) |
570 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 571 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
572 | } |
573 | ||
bb49a192 | 574 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
5de38842 PJ |
575 | doc: /* Read a character from the command input (keyboard or macro). |
576 | It is returned as a number. Non-character events are ignored. | |
577 | ||
578 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
579 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
580 | input method is turned on in the current buffer, that input method | |
581 | is used for reading a character. */) | |
582 | (prompt, inherit_input_method) | |
fc351d2f | 583 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 584 | { |
bb49a192 RS |
585 | if (! NILP (prompt)) |
586 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 587 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 588 | } |
078e7b4a JB |
589 | |
590 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
591 | doc: /* Don't use this yourself. */) |
592 | () | |
078e7b4a JB |
593 | { |
594 | register Lisp_Object val; | |
1805de4f | 595 | XSETINT (val, getc (instream)); |
078e7b4a JB |
596 | return val; |
597 | } | |
da84f340 GM |
598 | |
599 | ||
550a625e | 600 | \f |
da84f340 GM |
601 | /* Value is non-zero if the file asswociated with file descriptor FD |
602 | is a compiled Lisp file that's safe to load. Only files compiled | |
603 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
604 | to a crash in Fbyte_code because of an incompatible change in the | |
605 | byte compiler. */ | |
606 | ||
607 | static int | |
608 | safe_to_load_p (fd) | |
609 | int fd; | |
610 | { | |
611 | char buf[512]; | |
612 | int nbytes, i; | |
613 | int safe_p = 1; | |
614 | ||
615 | /* Read the first few bytes from the file, and look for a line | |
616 | specifying the byte compiler version used. */ | |
617 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
618 | if (nbytes > 0) | |
619 | { | |
620 | buf[nbytes] = '\0'; | |
621 | ||
622 | /* Skip to the next newline, skipping over the initial `ELC' | |
623 | with NUL bytes following it. */ | |
624 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
625 | ; | |
626 | ||
627 | if (i < nbytes | |
628 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
629 | buf + i) < 0) | |
630 | safe_p = 0; | |
631 | } | |
632 | ||
633 | lseek (fd, 0, SEEK_SET); | |
634 | return safe_p; | |
635 | } | |
636 | ||
637 | ||
7ee3bd7b GM |
638 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
639 | after loading a file successfully. */ | |
640 | ||
641 | static Lisp_Object | |
642 | record_load_unwind (old) | |
643 | Lisp_Object old; | |
644 | { | |
645 | return Vloads_in_progress = old; | |
646 | } | |
647 | ||
164c8bfe RS |
648 | /* This handler function is used via internal_condition_case_1. */ |
649 | ||
650 | static Lisp_Object | |
651 | load_error_handler (data) | |
652 | Lisp_Object data; | |
653 | { | |
654 | return Qnil; | |
655 | } | |
7ee3bd7b | 656 | |
971a4293 LT |
657 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
658 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
659 | required. | |
660 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
661 | () | |
662 | { | |
663 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
664 | while (CONSP (suffixes)) | |
665 | { | |
666 | Lisp_Object exts = Vload_file_rep_suffixes; | |
667 | suffix = XCAR (suffixes); | |
668 | suffixes = XCDR (suffixes); | |
669 | while (CONSP (exts)) | |
670 | { | |
671 | ext = XCAR (exts); | |
672 | exts = XCDR (exts); | |
673 | lst = Fcons (concat2 (suffix, ext), lst); | |
674 | } | |
675 | } | |
676 | return Fnreverse (lst); | |
677 | } | |
678 | ||
f0a50954 | 679 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
680 | doc: /* Execute a file of Lisp code named FILE. |
681 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 LT |
682 | then try FILE unmodified (the exact suffixes in the exact order are |
683 | determined by `load-suffixes'). Environment variable references in | |
684 | FILE are replaced with their values by calling `substitute-in-file-name'. | |
5de38842 | 685 | This function searches the directories in `load-path'. |
971a4293 | 686 | |
5de38842 | 687 | If optional second arg NOERROR is non-nil, |
971a4293 | 688 | report no error if FILE doesn't exist. |
5de38842 | 689 | Print messages at start and end of loading unless |
971a4293 | 690 | optional third arg NOMESSAGE is non-nil. |
5de38842 | 691 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 692 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 693 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
694 | the suffix `.elc' or `.el'; don't accept just FILE unless |
695 | it ends in one of those suffixes or includes a directory name. | |
696 | ||
697 | If this function fails to find a file, it may look for different | |
698 | representations of that file before trying another file. | |
699 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
700 | to the file name. Emacs uses this feature mainly to find compressed | |
701 | versions of files when Auto Compression mode is enabled. | |
702 | ||
703 | The exact suffixes that this function tries out, in the exact order, | |
704 | are given by the value of the variable `load-file-rep-suffixes' if | |
705 | NOSUFFIX is non-nil and by the return value of the function | |
706 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
707 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
708 | and then the former. | |
0fc213e9 RS |
709 | |
710 | Loading a file records its definitions, and its `provide' and | |
711 | `require' calls, in an element of `load-history' whose | |
712 | car is the file name loaded. See `load-history'. | |
713 | ||
971a4293 | 714 | Return t if the file exists and loads successfully. */) |
5de38842 | 715 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 716 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
717 | { |
718 | register FILE *stream; | |
719 | register int fd = -1; | |
aed13378 | 720 | int count = SPECPDL_INDEX (); |
078e7b4a | 721 | Lisp_Object temp; |
6bb6da3e AM |
722 | struct gcpro gcpro1, gcpro2, gcpro3; |
723 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
724 | /* 1 means we printed the ".el is newer" message. */ |
725 | int newer = 0; | |
726 | /* 1 means we are loading a compiled file. */ | |
727 | int compiled = 0; | |
c2225d00 | 728 | Lisp_Object handler; |
456c67a4 | 729 | int safe_p = 1; |
229ba775 | 730 | char *fmode = "r"; |
6bb6da3e | 731 | Lisp_Object tmp[2]; |
317073d5 | 732 | #ifdef DOS_NT |
229ba775 | 733 | fmode = "rt"; |
317073d5 | 734 | #endif /* DOS_NT */ |
078e7b4a | 735 | |
b7826503 | 736 | CHECK_STRING (file); |
078e7b4a | 737 | |
c2225d00 | 738 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
739 | /* This shouldn't be necessary any more now that `openp' handles it right. |
740 | handler = Ffind_file_name_handler (file, Qload); | |
741 | if (!NILP (handler)) | |
742 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 743 | |
07a0bda3 RS |
744 | /* Do this after the handler to avoid |
745 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
746 | (Below here, we care only whether they are nil or not.) |
747 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 748 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
749 | everywhere, it accidentally stayed here. Since then, enough people |
750 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
751 | that it seemed risky to remove. */ | |
164c8bfe RS |
752 | if (! NILP (noerror)) |
753 | { | |
754 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
755 | Qt, load_error_handler); | |
756 | if (NILP (file)) | |
757 | return Qnil; | |
758 | } | |
759 | else | |
760 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 761 | |
07a0bda3 | 762 | |
078e7b4a JB |
763 | /* Avoid weird lossage with null string as arg, |
764 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 765 | if (SCHARS (file) > 0) |
078e7b4a | 766 | { |
d5db4077 | 767 | int size = SBYTES (file); |
211f7dcd | 768 | |
0fc213e9 RS |
769 | found = Qnil; |
770 | GCPRO2 (file, found); | |
211f7dcd RS |
771 | |
772 | if (! NILP (must_suffix)) | |
773 | { | |
774 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
775 | if (size > 3 | |
d5db4077 | 776 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
777 | must_suffix = Qnil; |
778 | else if (size > 4 | |
d5db4077 | 779 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
780 | must_suffix = Qnil; |
781 | /* Don't insist on adding a suffix | |
782 | if the argument includes a directory name. */ | |
783 | else if (! NILP (Ffile_name_directory (file))) | |
784 | must_suffix = Qnil; | |
785 | } | |
786 | ||
f0a50954 | 787 | fd = openp (Vload_path, file, |
e61b9b87 | 788 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
789 | : !NILP (must_suffix) ? Fget_load_suffixes () |
790 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
791 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 792 | tmp))), |
86d00812 | 793 | &found, Qnil); |
5a6e5452 | 794 | UNGCPRO; |
078e7b4a JB |
795 | } |
796 | ||
96dc0f4e | 797 | if (fd == -1) |
078e7b4a | 798 | { |
265a9e55 | 799 | if (NILP (noerror)) |
164c8bfe RS |
800 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), |
801 | Fcons (file, Qnil))); | |
078e7b4a JB |
802 | else |
803 | return Qnil; | |
804 | } | |
805 | ||
ba0d1195 | 806 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
807 | if (EQ (Qt, Vuser_init_file)) |
808 | Vuser_init_file = found; | |
809 | ||
96dc0f4e MB |
810 | /* If FD is -2, that means openp found a magic file. */ |
811 | if (fd == -2) | |
74549846 | 812 | { |
5e24a1f7 KH |
813 | if (NILP (Fequal (found, file))) |
814 | /* If FOUND is a different file name from FILE, | |
815 | find its handler even if we have already inhibited | |
816 | the `load' operation on FILE. */ | |
817 | handler = Ffind_file_name_handler (found, Qt); | |
818 | else | |
819 | handler = Ffind_file_name_handler (found, Qload); | |
820 | if (! NILP (handler)) | |
821 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
822 | } |
823 | ||
550a625e GM |
824 | /* Check if we're stuck in a recursive load cycle. |
825 | ||
826 | 2000-09-21: It's not possible to just check for the file loaded | |
827 | being a member of Vloads_in_progress. This fails because of the | |
828 | way the byte compiler currently works; `provide's are not | |
829 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
830 | leads to a certain amount of ``normal'' recursion. | |
831 | ||
832 | Also, just loading a file recursively is not always an error in | |
833 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
834 | { |
835 | int count = 0; | |
836 | Lisp_Object tem; | |
837 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
838 | if (!NILP (Fequal (found, XCAR (tem)))) | |
839 | count++; | |
840 | if (count > 3) | |
3fdf12ca EZ |
841 | { |
842 | if (fd >= 0) | |
843 | emacs_close (fd); | |
844 | Fsignal (Qerror, Fcons (build_string ("Recursive load"), | |
845 | Fcons (found, Vloads_in_progress))); | |
846 | } | |
3ba6fd9a RS |
847 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
848 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
849 | } | |
7ee3bd7b | 850 | |
6bb6da3e AM |
851 | /* Get the name for load-history. */ |
852 | hist_file_name = (! NILP (Vpurify_flag) | |
853 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
854 | tmp[1] = Ffile_name_nondirectory (found), | |
855 | tmp)) | |
856 | : found) ; | |
857 | ||
a1c89c0a | 858 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
859 | ".elc", 4)) |
860 | /* Load .elc files directly, but not when they are | |
861 | remote and have no handler! */ | |
078e7b4a | 862 | { |
96dc0f4e | 863 | if (fd != -2) |
da84f340 | 864 | { |
96dc0f4e MB |
865 | struct stat s1, s2; |
866 | int result; | |
da84f340 | 867 | |
6bb6da3e | 868 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 869 | |
96dc0f4e MB |
870 | if (!safe_to_load_p (fd)) |
871 | { | |
872 | safe_p = 0; | |
873 | if (!load_dangerous_libraries) | |
e63304b7 DL |
874 | { |
875 | if (fd >= 0) | |
876 | emacs_close (fd); | |
877 | error ("File `%s' was not compiled in Emacs", | |
878 | SDATA (found)); | |
879 | } | |
96dc0f4e MB |
880 | else if (!NILP (nomessage)) |
881 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
882 | } | |
04fc68e7 | 883 | |
96dc0f4e MB |
884 | compiled = 1; |
885 | ||
eb191db2 EZ |
886 | efound = ENCODE_FILE (found); |
887 | ||
26fbf20b | 888 | #ifdef DOS_NT |
96dc0f4e | 889 | fmode = "rb"; |
26fbf20b | 890 | #endif /* DOS_NT */ |
d5db4077 | 891 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 892 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 893 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 894 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 895 | |
96dc0f4e MB |
896 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
897 | { | |
898 | /* Make the progress messages mention that source is newer. */ | |
899 | newer = 1; | |
04fc68e7 | 900 | |
96dc0f4e | 901 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
902 | if (!NILP (nomessage)) |
903 | { | |
0fc213e9 RS |
904 | Lisp_Object msg_file; |
905 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 906 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 907 | msg_file, 1); |
714d8c39 | 908 | } |
96dc0f4e | 909 | } |
0fc213e9 | 910 | UNGCPRO; |
51ac6f83 | 911 | } |
078e7b4a | 912 | } |
fe0e03f3 KH |
913 | else |
914 | { | |
915 | /* We are loading a source file (*.el). */ | |
916 | if (!NILP (Vload_source_file_function)) | |
917 | { | |
7ee3bd7b | 918 | Lisp_Object val; |
96dc0f4e MB |
919 | |
920 | if (fd >= 0) | |
68c45bf0 | 921 | emacs_close (fd); |
6bb6da3e | 922 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b GM |
923 | NILP (noerror) ? Qnil : Qt, |
924 | NILP (nomessage) ? Qnil : Qt); | |
925 | return unbind_to (count, val); | |
fe0e03f3 KH |
926 | } |
927 | } | |
078e7b4a | 928 | |
6bb6da3e | 929 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 930 | |
229ba775 | 931 | #ifdef WINDOWSNT |
68c45bf0 | 932 | emacs_close (fd); |
eb191db2 | 933 | efound = ENCODE_FILE (found); |
d5db4077 | 934 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
935 | #else /* not WINDOWSNT */ |
936 | stream = fdopen (fd, fmode); | |
937 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
938 | if (stream == 0) |
939 | { | |
68c45bf0 | 940 | emacs_close (fd); |
d5db4077 | 941 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
942 | } |
943 | ||
4b104c41 RS |
944 | if (! NILP (Vpurify_flag)) |
945 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
946 | ||
04fc68e7 RS |
947 | if (NILP (nomessage)) |
948 | { | |
da84f340 GM |
949 | if (!safe_p) |
950 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
951 | file, 1); | |
952 | else if (!compiled) | |
e28552a4 | 953 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 954 | else if (newer) |
e28552a4 RS |
955 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
956 | file, 1); | |
db5cae4b | 957 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 958 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 959 | } |
078e7b4a | 960 | |
c04d9e70 | 961 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 962 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 963 | specbind (Qload_file_name, found); |
74549846 | 964 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
965 | load_descriptor_list |
966 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 967 | load_in_progress++; |
6bb6da3e | 968 | readevalloop (Qget_file_char, stream, hist_file_name, |
0fc213e9 | 969 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
078e7b4a JB |
970 | unbind_to (count, Qnil); |
971 | ||
6bb6da3e AM |
972 | /* Run any eval-after-load forms for this file */ |
973 | if (NILP (Vpurify_flag) | |
974 | && (!NILP (Ffboundp (Qdo_after_load_evaluation)))) | |
975 | call1 (Qdo_after_load_evaluation, hist_file_name) ; | |
976 | ||
078e7b4a JB |
977 | UNGCPRO; |
978 | ||
b2a30870 RS |
979 | if (saved_doc_string) |
980 | free (saved_doc_string); | |
981 | saved_doc_string = 0; | |
982 | saved_doc_string_size = 0; | |
983 | ||
c15cfd1f | 984 | if (prev_saved_doc_string) |
3cb65b0e | 985 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
986 | prev_saved_doc_string = 0; |
987 | prev_saved_doc_string_size = 0; | |
988 | ||
265a9e55 | 989 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 990 | { |
da84f340 GM |
991 | if (!safe_p) |
992 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
993 | file, 1); | |
994 | else if (!compiled) | |
e28552a4 | 995 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 996 | else if (newer) |
e28552a4 RS |
997 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
998 | file, 1); | |
db5cae4b | 999 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1000 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1001 | } |
7ee3bd7b | 1002 | |
11810d78 SM |
1003 | if (!NILP (Fequal (build_string ("obsolete"), |
1004 | Ffile_name_nondirectory | |
1005 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
1006 | message_with_string ("Package %s is obsolete", file, 1); | |
1007 | ||
078e7b4a JB |
1008 | return Qt; |
1009 | } | |
1010 | ||
1011 | static Lisp_Object | |
ebfe97a2 KS |
1012 | load_unwind (arg) /* used as unwind-protect function in load */ |
1013 | Lisp_Object arg; | |
078e7b4a | 1014 | { |
ebfe97a2 KS |
1015 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1016 | if (stream != NULL) | |
1017 | fclose (stream); | |
078e7b4a JB |
1018 | if (--load_in_progress < 0) load_in_progress = 0; |
1019 | return Qnil; | |
1020 | } | |
1021 | ||
d2c6be7f RS |
1022 | static Lisp_Object |
1023 | load_descriptor_unwind (oldlist) | |
1024 | Lisp_Object oldlist; | |
1025 | { | |
1026 | load_descriptor_list = oldlist; | |
838abf56 | 1027 | return Qnil; |
d2c6be7f RS |
1028 | } |
1029 | ||
1030 | /* Close all descriptors in use for Floads. | |
1031 | This is used when starting a subprocess. */ | |
1032 | ||
1033 | void | |
1034 | close_load_descs () | |
1035 | { | |
f3849f25 | 1036 | #ifndef WINDOWSNT |
d2c6be7f | 1037 | Lisp_Object tail; |
c1d497be | 1038 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 1039 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1040 | #endif |
d2c6be7f | 1041 | } |
078e7b4a JB |
1042 | \f |
1043 | static int | |
1044 | complete_filename_p (pathname) | |
1045 | Lisp_Object pathname; | |
1046 | { | |
4b2dd274 | 1047 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1048 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1049 | || (SCHARS (pathname) > 2 |
317073d5 | 1050 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1051 | #ifdef ALTOS |
1052 | || *s == '@' | |
1053 | #endif | |
1054 | #ifdef VMS | |
1055 | || index (s, ':') | |
1056 | #endif /* VMS */ | |
1057 | ); | |
1058 | } | |
1059 | ||
86d00812 SM |
1060 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1061 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1062 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1063 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1064 | file name when searching. | |
1065 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1066 | PREDICATE can also be an integer to pass to the access(2) function, | |
1067 | in which case file-name-handlers are ignored. */) | |
1068 | (filename, path, suffixes, predicate) | |
1069 | Lisp_Object filename, path, suffixes, predicate; | |
1070 | { | |
1071 | Lisp_Object file; | |
1072 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1073 | if (NILP (predicate) && fd > 0) | |
1074 | close (fd); | |
1075 | return file; | |
1076 | } | |
1077 | ||
1078 | ||
078e7b4a JB |
1079 | /* Search for a file whose name is STR, looking in directories |
1080 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1081 | On success, returns a file descriptor. On failure, returns -1. |
1082 | ||
e61b9b87 SM |
1083 | SUFFIXES is a list of strings containing possible suffixes. |
1084 | The empty suffix is automatically added iff the list is empty. | |
1085 | ||
86d00812 SM |
1086 | PREDICATE non-nil means don't open the files, |
1087 | just look for one that satisfies the predicate. In this case, | |
1088 | returns 1 on success. The predicate can be a lisp function or | |
1089 | an integer to pass to `access' (in which case file-name-handlers | |
1090 | are ignored). | |
078e7b4a JB |
1091 | |
1092 | If STOREPTR is nonzero, it points to a slot where the name of | |
1093 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1094 | nil is stored there on failure. |
1095 | ||
96dc0f4e | 1096 | If the file we find is remote, return -2 |
86d00812 | 1097 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1098 | |
1099 | int | |
86d00812 | 1100 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1101 | Lisp_Object path, str; |
e61b9b87 | 1102 | Lisp_Object suffixes; |
078e7b4a | 1103 | Lisp_Object *storeptr; |
86d00812 | 1104 | Lisp_Object predicate; |
078e7b4a JB |
1105 | { |
1106 | register int fd; | |
1107 | int fn_size = 100; | |
1108 | char buf[100]; | |
1109 | register char *fn = buf; | |
1110 | int absolute = 0; | |
1111 | int want_size; | |
74549846 | 1112 | Lisp_Object filename; |
078e7b4a | 1113 | struct stat st; |
eb191db2 EZ |
1114 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1115 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1116 | int max_suffix_len = 0; |
1117 | ||
6f8eafd1 SM |
1118 | CHECK_STRING (str); |
1119 | ||
e61b9b87 SM |
1120 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1121 | { | |
f5df591a | 1122 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1123 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1124 | SBYTES (XCAR (tail))); |
e61b9b87 | 1125 | } |
078e7b4a | 1126 | |
8b9d426a | 1127 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1128 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1129 | ||
078e7b4a JB |
1130 | if (storeptr) |
1131 | *storeptr = Qnil; | |
1132 | ||
1133 | if (complete_filename_p (str)) | |
1134 | absolute = 1; | |
1135 | ||
e61b9b87 | 1136 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1137 | { |
e61b9b87 | 1138 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1139 | if (!complete_filename_p (filename)) |
1140 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1141 | /* Of course, this could conceivably lose if luser sets | |
1142 | default-directory to be something non-absolute... */ | |
1143 | { | |
1144 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1145 | if (!complete_filename_p (filename)) | |
1146 | /* Give up on this path element! */ | |
1147 | continue; | |
1148 | } | |
1149 | ||
1150 | /* Calculate maximum size of any filename made from | |
1151 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1152 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1153 | if (fn_size < want_size) |
1154 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1155 | ||
078e7b4a | 1156 | /* Loop over suffixes. */ |
971a4293 | 1157 | for (tail = NILP (suffixes) ? Fcons (build_string (""), Qnil) : suffixes; |
e61b9b87 | 1158 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1159 | { |
d5db4077 | 1160 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1161 | Lisp_Object handler; |
eb191db2 | 1162 | int exists; |
078e7b4a | 1163 | |
c49afcd7 RS |
1164 | /* Concatenate path element/specified name with the suffix. |
1165 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1166 | if (SCHARS (filename) > 2 |
1167 | && SREF (filename, 0) == '/' | |
1168 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1169 | { |
d5db4077 KR |
1170 | strncpy (fn, SDATA (filename) + 2, |
1171 | SBYTES (filename) - 2); | |
1172 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1173 | } |
1174 | else | |
1175 | { | |
d5db4077 KR |
1176 | strncpy (fn, SDATA (filename), |
1177 | SBYTES (filename)); | |
1178 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1179 | } |
1180 | ||
078e7b4a | 1181 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1182 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1183 | |
74549846 | 1184 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1185 | /* We used to only check for handlers on non-absolute file names: |
1186 | if (absolute) | |
1187 | handler = Qnil; | |
1188 | else | |
1189 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1190 | It's not clear why that was the case and it breaks things like | |
1191 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1192 | string = build_string (fn); |
4773b8ca | 1193 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1194 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1195 | { | |
1196 | if (NILP (predicate)) | |
1197 | exists = !NILP (Ffile_readable_p (string)); | |
1198 | else | |
1199 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1200 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1201 | exists = 0; |
1202 | ||
1203 | if (exists) | |
078e7b4a JB |
1204 | { |
1205 | /* We succeeded; return this descriptor and filename. */ | |
1206 | if (storeptr) | |
eb191db2 | 1207 | *storeptr = string; |
5ef2a3c0 | 1208 | UNGCPRO; |
96dc0f4e | 1209 | return -2; |
74549846 RS |
1210 | } |
1211 | } | |
1212 | else | |
1213 | { | |
4b2dd274 | 1214 | const char *pfn; |
eb191db2 EZ |
1215 | |
1216 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1217 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1218 | exists = (stat (pfn, &st) >= 0 |
1219 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1220 | if (exists) |
1221 | { | |
1222 | /* Check that we can access or open it. */ | |
86d00812 SM |
1223 | if (NATNUMP (predicate)) |
1224 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1225 | else |
eb191db2 | 1226 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1227 | |
1228 | if (fd >= 0) | |
1229 | { | |
1230 | /* We succeeded; return this descriptor and filename. */ | |
1231 | if (storeptr) | |
eb191db2 | 1232 | *storeptr = string; |
74549846 RS |
1233 | UNGCPRO; |
1234 | return fd; | |
1235 | } | |
078e7b4a JB |
1236 | } |
1237 | } | |
078e7b4a | 1238 | } |
5a6e5452 | 1239 | if (absolute) |
5ef2a3c0 | 1240 | break; |
078e7b4a JB |
1241 | } |
1242 | ||
5ef2a3c0 KH |
1243 | UNGCPRO; |
1244 | return -1; | |
078e7b4a JB |
1245 | } |
1246 | ||
1247 | \f | |
ae321d28 RS |
1248 | /* Merge the list we've accumulated of globals from the current input source |
1249 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1250 | the source has an associated file name or not. |
1251 | ||
1252 | FILENAME is the file name that we are loading from. | |
1253 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1254 | |
1255 | static void | |
b502a9a1 RS |
1256 | build_load_history (filename, entire) |
1257 | Lisp_Object filename; | |
1258 | int entire; | |
ae321d28 RS |
1259 | { |
1260 | register Lisp_Object tail, prev, newelt; | |
1261 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1262 | register int foundit = 0; |
ae321d28 RS |
1263 | |
1264 | tail = Vload_history; | |
1265 | prev = Qnil; | |
b502a9a1 | 1266 | |
86d00812 | 1267 | while (CONSP (tail)) |
ae321d28 | 1268 | { |
86d00812 | 1269 | tem = XCAR (tail); |
ae321d28 RS |
1270 | |
1271 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1272 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1273 | { |
1274 | foundit = 1; | |
1275 | ||
b502a9a1 RS |
1276 | /* If we're loading the entire file, remove old data. */ |
1277 | if (entire) | |
86d00812 | 1278 | { |
ae321d28 | 1279 | if (NILP (prev)) |
86d00812 | 1280 | Vload_history = XCDR (tail); |
ae321d28 | 1281 | else |
86d00812 | 1282 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1283 | } |
1284 | ||
1285 | /* Otherwise, cons on new symbols that are not already members. */ | |
1286 | else | |
1287 | { | |
1288 | tem2 = Vcurrent_load_list; | |
1289 | ||
1290 | while (CONSP (tem2)) | |
1291 | { | |
86d00812 | 1292 | newelt = XCAR (tem2); |
ae321d28 | 1293 | |
d642e4f9 | 1294 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1295 | Fsetcar (tail, Fcons (XCAR (tem), |
1296 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1297 | |
86d00812 | 1298 | tem2 = XCDR (tem2); |
ae321d28 RS |
1299 | QUIT; |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | else | |
1304 | prev = tail; | |
86d00812 | 1305 | tail = XCDR (tail); |
ae321d28 RS |
1306 | QUIT; |
1307 | } | |
1308 | ||
b502a9a1 RS |
1309 | /* If we're loading an entire file, cons the new assoc onto the |
1310 | front of load-history, the most-recently-loaded position. Also | |
1311 | do this if we didn't find an existing member for the file. */ | |
1312 | if (entire || !foundit) | |
8a1f1537 RS |
1313 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1314 | Vload_history); | |
ae321d28 RS |
1315 | } |
1316 | ||
078e7b4a | 1317 | Lisp_Object |
232ccf27 DL |
1318 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1319 | Lisp_Object junk; | |
078e7b4a JB |
1320 | { |
1321 | read_pure = 0; | |
1322 | return Qnil; | |
1323 | } | |
1324 | ||
94e554db RS |
1325 | static Lisp_Object |
1326 | readevalloop_1 (old) | |
1327 | Lisp_Object old; | |
1328 | { | |
1329 | load_convert_to_unibyte = ! NILP (old); | |
1330 | return Qnil; | |
1331 | } | |
1332 | ||
9c97398c GM |
1333 | /* Signal an `end-of-file' error, if possible with file name |
1334 | information. */ | |
1335 | ||
1336 | static void | |
1337 | end_of_file_error () | |
1338 | { | |
1339 | Lisp_Object data; | |
1340 | ||
1341 | if (STRINGP (Vload_file_name)) | |
1342 | data = Fcons (Vload_file_name, Qnil); | |
1343 | else | |
1344 | data = Qnil; | |
1345 | ||
1346 | Fsignal (Qend_of_file, data); | |
1347 | } | |
1348 | ||
94e554db | 1349 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1350 | for this invocation. |
4c03c46d | 1351 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1352 | |
1353 | START, END specify region to read in current buffer (from eval-region). | |
1354 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1355 | |
078e7b4a | 1356 | static void |
4c03c46d KS |
1357 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1358 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1359 | Lisp_Object readcharfun; |
ae321d28 RS |
1360 | FILE *stream; |
1361 | Lisp_Object sourcename; | |
078e7b4a JB |
1362 | Lisp_Object (*evalfun) (); |
1363 | int printflag; | |
976350af | 1364 | Lisp_Object unibyte, readfun; |
4c03c46d | 1365 | Lisp_Object start, end; |
078e7b4a JB |
1366 | { |
1367 | register int c; | |
1368 | register Lisp_Object val; | |
aed13378 | 1369 | int count = SPECPDL_INDEX (); |
0a37f512 | 1370 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1371 | struct buffer *b = 0; |
f38952fe | 1372 | int continue_reading_p; |
d11db2c8 RS |
1373 | /* Nonzero if reading an entire buffer. */ |
1374 | int whole_buffer = 0; | |
1375 | /* 1 on the first time around. */ | |
1376 | int first_sexp = 1; | |
1377 | ||
1378 | if (MARKERP (readcharfun)) | |
1379 | { | |
1380 | if (NILP (start)) | |
8878319c | 1381 | start = readcharfun; |
d11db2c8 | 1382 | } |
49cf7ff4 RS |
1383 | |
1384 | if (BUFFERP (readcharfun)) | |
1385 | b = XBUFFER (readcharfun); | |
1386 | else if (MARKERP (readcharfun)) | |
1387 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1388 | |
1ed7b9ae RS |
1389 | /* We assume START is nil when input is not from a buffer. */ |
1390 | if (! NILP (start) && !b) | |
1391 | abort (); | |
1392 | ||
0a37f512 | 1393 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1394 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1395 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1396 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1397 | |
00a9a935 | 1398 | readchar_backlog = -1; |
6f7f43d5 | 1399 | |
0a37f512 | 1400 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1401 | |
6bb6da3e AM |
1402 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1403 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1404 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1405 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1406 | sourcename = call1 (Qfile_truename, sourcename) ; |
1407 | ||
ae321d28 RS |
1408 | LOADHIST_ATTACH (sourcename); |
1409 | ||
f38952fe GM |
1410 | continue_reading_p = 1; |
1411 | while (continue_reading_p) | |
078e7b4a | 1412 | { |
4c03c46d KS |
1413 | int count1 = SPECPDL_INDEX (); |
1414 | ||
49cf7ff4 RS |
1415 | if (b != 0 && NILP (b->name)) |
1416 | error ("Reading from killed buffer"); | |
1417 | ||
4c03c46d KS |
1418 | if (!NILP (start)) |
1419 | { | |
721b7d9e RS |
1420 | /* Switch to the buffer we are reading from. */ |
1421 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1422 | set_buffer_internal (b); | |
1423 | ||
1424 | /* Save point in it. */ | |
4c03c46d | 1425 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1426 | /* Save ZV in it. */ |
4c03c46d | 1427 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1428 | /* Those get unbound after we read one expression. */ |
1429 | ||
1430 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1431 | Fgoto_char (start); |
d11db2c8 RS |
1432 | if (!NILP (end)) |
1433 | Fnarrow_to_region (make_number (BEGV), end); | |
1434 | ||
1435 | /* Just for cleanliness, convert END to a marker | |
1436 | if it is an integer. */ | |
1437 | if (INTEGERP (end)) | |
1438 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1439 | } |
1440 | ||
d11db2c8 RS |
1441 | /* On the first cycle, we can easily test here |
1442 | whether we are reading the whole buffer. */ | |
1443 | if (b && first_sexp) | |
1444 | whole_buffer = (PT == BEG && ZV == Z); | |
1445 | ||
078e7b4a | 1446 | instream = stream; |
4c03c46d | 1447 | read_next: |
078e7b4a JB |
1448 | c = READCHAR; |
1449 | if (c == ';') | |
1450 | { | |
1451 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1452 | goto read_next; |
1453 | } | |
1454 | if (c < 0) | |
1455 | { | |
1456 | unbind_to (count1, Qnil); | |
1457 | break; | |
078e7b4a | 1458 | } |
6069d957 RS |
1459 | |
1460 | /* Ignore whitespace here, so we can detect eof. */ | |
1461 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1462 | goto read_next; |
078e7b4a | 1463 | |
265a9e55 | 1464 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1465 | { |
1466 | record_unwind_protect (unreadpure, Qnil); | |
1467 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1468 | } |
1469 | else | |
1470 | { | |
1471 | UNREAD (c); | |
4ad679f9 | 1472 | read_objects = Qnil; |
f38952fe GM |
1473 | if (!NILP (readfun)) |
1474 | { | |
1475 | val = call1 (readfun, readcharfun); | |
1476 | ||
1477 | /* If READCHARFUN has set point to ZV, we should | |
1478 | stop reading, even if the form read sets point | |
1479 | to a different value when evaluated. */ | |
1480 | if (BUFFERP (readcharfun)) | |
1481 | { | |
1482 | struct buffer *b = XBUFFER (readcharfun); | |
1483 | if (BUF_PT (b) == BUF_ZV (b)) | |
1484 | continue_reading_p = 0; | |
1485 | } | |
1486 | } | |
976350af | 1487 | else if (! NILP (Vload_read_function)) |
84a15045 | 1488 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1489 | else |
abb13b09 | 1490 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1491 | } |
1492 | ||
4c03c46d KS |
1493 | if (!NILP (start) && continue_reading_p) |
1494 | start = Fpoint_marker (); | |
d11db2c8 RS |
1495 | |
1496 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1497 | unbind_to (count1, Qnil); |
1498 | ||
d11db2c8 | 1499 | /* Now eval what we just read. */ |
078e7b4a | 1500 | val = (*evalfun) (val); |
f38952fe | 1501 | |
078e7b4a JB |
1502 | if (printflag) |
1503 | { | |
1504 | Vvalues = Fcons (val, Vvalues); | |
1505 | if (EQ (Vstandard_output, Qt)) | |
1506 | Fprin1 (val, Qnil); | |
1507 | else | |
1508 | Fprint (val, Qnil); | |
1509 | } | |
d11db2c8 RS |
1510 | |
1511 | first_sexp = 0; | |
078e7b4a JB |
1512 | } |
1513 | ||
8878319c | 1514 | build_load_history (sourcename, |
d11db2c8 | 1515 | stream || whole_buffer); |
b502a9a1 | 1516 | |
ae321d28 RS |
1517 | UNGCPRO; |
1518 | ||
078e7b4a JB |
1519 | unbind_to (count, Qnil); |
1520 | } | |
1521 | ||
1076254d | 1522 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1523 | doc: /* Execute the current buffer as Lisp code. |
1524 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1525 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1526 | PRINTFLAG controls printing of output: | |
1527 | nil means discard it; anything else is stream for print. | |
1528 | ||
1529 | If the optional third argument FILENAME is non-nil, | |
1530 | it specifies the file name to use for `load-history'. | |
1531 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1532 | for this invocation. | |
1533 | ||
3f9ab804 | 1534 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1535 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1536 | ||
1537 | This function preserves the position of point. */) | |
1538 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1539 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1540 | { |
aed13378 | 1541 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1542 | Lisp_Object tem, buf; |
1543 | ||
9391b698 | 1544 | if (NILP (buffer)) |
228d4b1c JA |
1545 | buf = Fcurrent_buffer (); |
1546 | else | |
9391b698 | 1547 | buf = Fget_buffer (buffer); |
dfdb645c | 1548 | if (NILP (buf)) |
13febd85 | 1549 | error ("No such buffer"); |
228d4b1c | 1550 | |
1076254d | 1551 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1552 | tem = Qsymbolp; |
1553 | else | |
1554 | tem = printflag; | |
13febd85 RS |
1555 | |
1556 | if (NILP (filename)) | |
1557 | filename = XBUFFER (buf)->filename; | |
1558 | ||
3f39f996 | 1559 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1560 | specbind (Qstandard_output, tem); |
1561 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1562 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1563 | readevalloop (buf, 0, filename, Feval, |
1564 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1565 | unbind_to (count, Qnil); |
228d4b1c JA |
1566 | |
1567 | return Qnil; | |
1568 | } | |
1569 | ||
976350af | 1570 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1571 | doc: /* Execute the region as Lisp code. |
1572 | When called from programs, expects two arguments, | |
1573 | giving starting and ending indices in the current buffer | |
1574 | of the text to be executed. | |
1575 | Programs can pass third argument PRINTFLAG which controls output: | |
1576 | nil means discard it; anything else is stream for printing it. | |
1577 | Also the fourth argument READ-FUNCTION, if non-nil, is used | |
1578 | instead of `read' to read each expression. It gets one argument | |
1579 | which is the input stream for reading characters. | |
1580 | ||
1581 | This function does not move point. */) | |
1582 | (start, end, printflag, read_function) | |
976350af | 1583 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1584 | { |
aed13378 | 1585 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1586 | Lisp_Object tem, cbuf; |
1587 | ||
1588 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1589 | |
265a9e55 | 1590 | if (NILP (printflag)) |
078e7b4a JB |
1591 | tem = Qsymbolp; |
1592 | else | |
1593 | tem = printflag; | |
1594 | specbind (Qstandard_output, tem); | |
3f39f996 | 1595 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1596 | |
4c03c46d | 1597 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1598 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1599 | !NILP (printflag), Qnil, read_function, |
1600 | start, end); | |
078e7b4a JB |
1601 | |
1602 | return unbind_to (count, Qnil); | |
1603 | } | |
1604 | ||
078e7b4a JB |
1605 | \f |
1606 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1607 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1608 | If STREAM is nil, use the value of `standard-input' (which see). | |
1609 | STREAM or the value of `standard-input' may be: | |
1610 | a buffer (read from point and advance it) | |
1611 | a marker (read from where it points and advance it) | |
1612 | a function (call it with no arguments for each character, | |
1613 | call it with a char as argument to push a char back) | |
1614 | a string (takes text from string, starting at the beginning) | |
1615 | t (read text line using minibuffer and use it, or read from | |
1616 | standard input in batch mode). */) | |
1617 | (stream) | |
5be02dff | 1618 | Lisp_Object stream; |
078e7b4a | 1619 | { |
5be02dff KH |
1620 | if (NILP (stream)) |
1621 | stream = Vstandard_input; | |
1622 | if (EQ (stream, Qt)) | |
1623 | stream = Qread_char; | |
5be02dff | 1624 | if (EQ (stream, Qread_char)) |
078e7b4a | 1625 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1626 | |
abb13b09 | 1627 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1628 | } |
1629 | ||
1630 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1631 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1632 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1633 | START and END optionally delimit a substring of STRING from which to read; | |
1634 | they default to 0 and (length STRING) respectively. */) | |
1635 | (string, start, end) | |
078e7b4a JB |
1636 | Lisp_Object string, start, end; |
1637 | { | |
2530ceaf | 1638 | Lisp_Object ret; |
b7826503 | 1639 | CHECK_STRING (string); |
2530ceaf CW |
1640 | /* read_internal_start sets read_from_string_index. */ |
1641 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1642 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1643 | } |
078e7b4a | 1644 | |
abb13b09 CW |
1645 | /* Function to set up the global context we need in toplevel read |
1646 | calls. */ | |
1647 | static Lisp_Object | |
1648 | read_internal_start (stream, start, end) | |
1649 | Lisp_Object stream; | |
1650 | Lisp_Object start; /* Only used when stream is a string. */ | |
1651 | Lisp_Object end; /* Only used when stream is a string. */ | |
1652 | { | |
1653 | Lisp_Object retval; | |
078e7b4a | 1654 | |
abb13b09 CW |
1655 | readchar_backlog = -1; |
1656 | readchar_count = 0; | |
17634846 | 1657 | new_backquote_flag = 0; |
4ad679f9 | 1658 | read_objects = Qnil; |
abb13b09 CW |
1659 | if (EQ (Vread_with_symbol_positions, Qt) |
1660 | || EQ (Vread_with_symbol_positions, stream)) | |
1661 | Vread_symbol_positions_list = Qnil; | |
1662 | ||
1663 | if (STRINGP (stream)) | |
1664 | { | |
1665 | int startval, endval; | |
1666 | if (NILP (end)) | |
d5db4077 | 1667 | endval = SCHARS (stream); |
abb13b09 CW |
1668 | else |
1669 | { | |
1670 | CHECK_NUMBER (end); | |
1671 | endval = XINT (end); | |
d5db4077 | 1672 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1673 | args_out_of_range (stream, end); |
1674 | } | |
17634846 | 1675 | |
abb13b09 CW |
1676 | if (NILP (start)) |
1677 | startval = 0; | |
1678 | else | |
1679 | { | |
1680 | CHECK_NUMBER (start); | |
1681 | startval = XINT (start); | |
1682 | if (startval < 0 || startval > endval) | |
1683 | args_out_of_range (stream, start); | |
1684 | } | |
1685 | read_from_string_index = startval; | |
1686 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1687 | read_from_string_limit = endval; | |
1688 | } | |
177c0ea7 | 1689 | |
abb13b09 CW |
1690 | retval = read0 (stream); |
1691 | if (EQ (Vread_with_symbol_positions, Qt) | |
1692 | || EQ (Vread_with_symbol_positions, stream)) | |
1693 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1694 | return retval; | |
078e7b4a JB |
1695 | } |
1696 | \f | |
6428369f KH |
1697 | /* Use this for recursive reads, in contexts where internal tokens |
1698 | are not allowed. */ | |
e28552a4 | 1699 | |
078e7b4a JB |
1700 | static Lisp_Object |
1701 | read0 (readcharfun) | |
1702 | Lisp_Object readcharfun; | |
1703 | { | |
1704 | register Lisp_Object val; | |
e28552a4 | 1705 | int c; |
078e7b4a | 1706 | |
17634846 | 1707 | val = read1 (readcharfun, &c, 0); |
6428369f | 1708 | if (c) |
93d75e4c RS |
1709 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1710 | make_number (c)), | |
e28552a4 | 1711 | Qnil)); |
078e7b4a JB |
1712 | |
1713 | return val; | |
1714 | } | |
1715 | \f | |
1716 | static int read_buffer_size; | |
1717 | static char *read_buffer; | |
1718 | ||
fe0e03f3 KH |
1719 | /* Read multibyte form and return it as a character. C is a first |
1720 | byte of multibyte form, and rest of them are read from | |
1721 | READCHARFUN. */ | |
6f7f43d5 | 1722 | |
fe0e03f3 KH |
1723 | static int |
1724 | read_multibyte (c, readcharfun) | |
1725 | register int c; | |
1726 | Lisp_Object readcharfun; | |
1727 | { | |
1728 | /* We need the actual character code of this multibyte | |
1729 | characters. */ | |
449fea39 | 1730 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1731 | int len = 0; |
0d5e5843 | 1732 | int bytes; |
fe0e03f3 | 1733 | |
abb13b09 CW |
1734 | if (c < 0) |
1735 | return c; | |
1736 | ||
fe0e03f3 KH |
1737 | str[len++] = c; |
1738 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1739 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1740 | { |
1741 | str[len++] = c; | |
1742 | readchar_count--; | |
1743 | } | |
fe0e03f3 | 1744 | UNREAD (c); |
0d5e5843 KH |
1745 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1746 | return STRING_CHAR (str, len); | |
1747 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1748 | but the first one, and return the first byte. */ | |
1749 | while (--len > 0) | |
1750 | UNREAD (str[len]); | |
1751 | return str[0]; | |
fe0e03f3 KH |
1752 | } |
1753 | ||
f6f79b37 RS |
1754 | /* Read a \-escape sequence, assuming we already read the `\'. |
1755 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1756 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1757 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1758 | |
078e7b4a | 1759 | static int |
f6f79b37 | 1760 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1761 | Lisp_Object readcharfun; |
e7fc914b | 1762 | int stringp; |
f6f79b37 | 1763 | int *byterep; |
078e7b4a JB |
1764 | { |
1765 | register int c = READCHAR; | |
71b169b8 EZ |
1766 | /* \u allows up to four hex digits, \U up to eight. Default to the |
1767 | behaviour for \u, and change this value in the case that \U is seen. */ | |
1768 | int unicode_hex_count = 4; | |
f6f79b37 RS |
1769 | |
1770 | *byterep = 0; | |
1771 | ||
078e7b4a JB |
1772 | switch (c) |
1773 | { | |
f3849f25 | 1774 | case -1: |
da3b886d | 1775 | end_of_file_error (); |
f3849f25 | 1776 | |
078e7b4a | 1777 | case 'a': |
265a9e55 | 1778 | return '\007'; |
078e7b4a JB |
1779 | case 'b': |
1780 | return '\b'; | |
f405a585 RS |
1781 | case 'd': |
1782 | return 0177; | |
078e7b4a JB |
1783 | case 'e': |
1784 | return 033; | |
1785 | case 'f': | |
1786 | return '\f'; | |
1787 | case 'n': | |
1788 | return '\n'; | |
1789 | case 'r': | |
1790 | return '\r'; | |
1791 | case 't': | |
1792 | return '\t'; | |
1793 | case 'v': | |
1794 | return '\v'; | |
1795 | case '\n': | |
1796 | return -1; | |
e28552a4 | 1797 | case ' ': |
e7fc914b KH |
1798 | if (stringp) |
1799 | return -1; | |
1800 | return ' '; | |
078e7b4a JB |
1801 | |
1802 | case 'M': | |
1803 | c = READCHAR; | |
1804 | if (c != '-') | |
1805 | error ("Invalid escape character syntax"); | |
1806 | c = READCHAR; | |
1807 | if (c == '\\') | |
f6f79b37 | 1808 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1809 | return c | meta_modifier; |
f405a585 RS |
1810 | |
1811 | case 'S': | |
1812 | c = READCHAR; | |
1813 | if (c != '-') | |
1814 | error ("Invalid escape character syntax"); | |
1815 | c = READCHAR; | |
1816 | if (c == '\\') | |
f6f79b37 | 1817 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1818 | return c | shift_modifier; |
1819 | ||
1820 | case 'H': | |
1821 | c = READCHAR; | |
1822 | if (c != '-') | |
1823 | error ("Invalid escape character syntax"); | |
1824 | c = READCHAR; | |
1825 | if (c == '\\') | |
f6f79b37 | 1826 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1827 | return c | hyper_modifier; |
1828 | ||
1829 | case 'A': | |
1830 | c = READCHAR; | |
1831 | if (c != '-') | |
1832 | error ("Invalid escape character syntax"); | |
1833 | c = READCHAR; | |
1834 | if (c == '\\') | |
f6f79b37 | 1835 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1836 | return c | alt_modifier; |
1837 | ||
1838 | case 's': | |
1839 | c = READCHAR; | |
010b7eac RS |
1840 | if (c != '-') |
1841 | { | |
1842 | UNREAD (c); | |
1843 | return ' '; | |
1844 | } | |
7bd279cd RS |
1845 | c = READCHAR; |
1846 | if (c == '\\') | |
f6f79b37 | 1847 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1848 | return c | super_modifier; |
078e7b4a JB |
1849 | |
1850 | case 'C': | |
1851 | c = READCHAR; | |
1852 | if (c != '-') | |
1853 | error ("Invalid escape character syntax"); | |
1854 | case '^': | |
1855 | c = READCHAR; | |
1856 | if (c == '\\') | |
f6f79b37 | 1857 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1858 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1859 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1860 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1861 | return c | ctrl_modifier; | |
f405a585 RS |
1862 | /* ASCII control chars are made from letters (both cases), |
1863 | as well as the non-letters within 0100...0137. */ | |
1864 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1865 | return (c & (037 | ~0177)); | |
1866 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1867 | return (c & (037 | ~0177)); | |
078e7b4a | 1868 | else |
7bd279cd | 1869 | return c | ctrl_modifier; |
078e7b4a JB |
1870 | |
1871 | case '0': | |
1872 | case '1': | |
1873 | case '2': | |
1874 | case '3': | |
1875 | case '4': | |
1876 | case '5': | |
1877 | case '6': | |
1878 | case '7': | |
1879 | /* An octal escape, as in ANSI C. */ | |
1880 | { | |
1881 | register int i = c - '0'; | |
1882 | register int count = 0; | |
1883 | while (++count < 3) | |
1884 | { | |
1885 | if ((c = READCHAR) >= '0' && c <= '7') | |
1886 | { | |
1887 | i *= 8; | |
1888 | i += c - '0'; | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | UNREAD (c); | |
1893 | break; | |
1894 | } | |
1895 | } | |
177c0ea7 | 1896 | |
f6f79b37 | 1897 | *byterep = 1; |
078e7b4a JB |
1898 | return i; |
1899 | } | |
1900 | ||
1901 | case 'x': | |
1902 | /* A hex escape, as in ANSI C. */ | |
1903 | { | |
1904 | int i = 0; | |
1905 | while (1) | |
1906 | { | |
1907 | c = READCHAR; | |
1908 | if (c >= '0' && c <= '9') | |
1909 | { | |
1910 | i *= 16; | |
1911 | i += c - '0'; | |
1912 | } | |
1913 | else if ((c >= 'a' && c <= 'f') | |
1914 | || (c >= 'A' && c <= 'F')) | |
1915 | { | |
1916 | i *= 16; | |
1917 | if (c >= 'a' && c <= 'f') | |
1918 | i += c - 'a' + 10; | |
1919 | else | |
1920 | i += c - 'A' + 10; | |
1921 | } | |
1922 | else | |
1923 | { | |
1924 | UNREAD (c); | |
1925 | break; | |
1926 | } | |
1927 | } | |
f6f79b37 RS |
1928 | |
1929 | *byterep = 2; | |
078e7b4a JB |
1930 | return i; |
1931 | } | |
1932 | ||
71b169b8 EZ |
1933 | case 'U': |
1934 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
1935 | unicode_hex_count = 8; | |
1936 | case 'u': | |
1937 | ||
1938 | /* A Unicode escape. We only permit them in strings and characters, | |
1939 | not arbitrarily in the source code, as in some other languages. */ | |
1940 | { | |
1941 | int i = 0; | |
1942 | int count = 0; | |
1943 | Lisp_Object lisp_char; | |
1944 | struct gcpro gcpro1; | |
1945 | ||
1946 | while (++count <= unicode_hex_count) | |
1947 | { | |
1948 | c = READCHAR; | |
a3ac22e4 | 1949 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
1950 | want. */ |
1951 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
1952 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
1953 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
1954 | else | |
1955 | { | |
1956 | error ("Non-hex digit used for Unicode escape"); | |
1957 | break; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | GCPRO1 (readcharfun); | |
a3ac22e4 EZ |
1962 | lisp_char = call2 (intern ("decode-char"), intern ("ucs"), |
1963 | make_number (i)); | |
71b169b8 EZ |
1964 | UNGCPRO; |
1965 | ||
a3ac22e4 | 1966 | if (NILP (lisp_char)) |
71b169b8 | 1967 | { |
9ee96155 | 1968 | error ("Unsupported Unicode code point: U+%x", (unsigned)i); |
71b169b8 | 1969 | } |
9ee96155 EZ |
1970 | |
1971 | return XFASTINT (lisp_char); | |
71b169b8 EZ |
1972 | } |
1973 | ||
078e7b4a | 1974 | default: |
fe0e03f3 KH |
1975 | if (BASE_LEADING_CODE_P (c)) |
1976 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1977 | return c; |
1978 | } | |
1979 | } | |
1980 | ||
bf5d1a17 GM |
1981 | |
1982 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1983 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1984 | read error is signaled . Value is the integer read. Signals an | |
1985 | error if encountering invalid read syntax or if RADIX is out of | |
1986 | range. */ | |
1987 | ||
1988 | static Lisp_Object | |
1989 | read_integer (readcharfun, radix) | |
1990 | Lisp_Object readcharfun; | |
1991 | int radix; | |
1992 | { | |
5e37dc22 GM |
1993 | int ndigits = 0, invalid_p, c, sign = 0; |
1994 | EMACS_INT number = 0; | |
bf5d1a17 GM |
1995 | |
1996 | if (radix < 2 || radix > 36) | |
1997 | invalid_p = 1; | |
1998 | else | |
1999 | { | |
2000 | number = ndigits = invalid_p = 0; | |
2001 | sign = 1; | |
2002 | ||
2003 | c = READCHAR; | |
2004 | if (c == '-') | |
2005 | { | |
2006 | c = READCHAR; | |
2007 | sign = -1; | |
2008 | } | |
2009 | else if (c == '+') | |
2010 | c = READCHAR; | |
177c0ea7 | 2011 | |
bf5d1a17 GM |
2012 | while (c >= 0) |
2013 | { | |
2014 | int digit; | |
177c0ea7 | 2015 | |
bf5d1a17 GM |
2016 | if (c >= '0' && c <= '9') |
2017 | digit = c - '0'; | |
2018 | else if (c >= 'a' && c <= 'z') | |
2019 | digit = c - 'a' + 10; | |
2020 | else if (c >= 'A' && c <= 'Z') | |
2021 | digit = c - 'A' + 10; | |
2022 | else | |
b632fa48 GM |
2023 | { |
2024 | UNREAD (c); | |
2025 | break; | |
2026 | } | |
bf5d1a17 GM |
2027 | |
2028 | if (digit < 0 || digit >= radix) | |
2029 | invalid_p = 1; | |
2030 | ||
2031 | number = radix * number + digit; | |
2032 | ++ndigits; | |
2033 | c = READCHAR; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | if (ndigits == 0 || invalid_p) | |
2038 | { | |
2039 | char buf[50]; | |
2040 | sprintf (buf, "integer, radix %d", radix); | |
2041 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
2042 | } | |
2043 | ||
2044 | return make_number (sign * number); | |
2045 | } | |
2046 | ||
2047 | ||
a742d646 GM |
2048 | /* Convert unibyte text in read_buffer to multibyte. |
2049 | ||
2050 | Initially, *P is a pointer after the end of the unibyte text, and | |
2051 | the pointer *END points after the end of read_buffer. | |
2052 | ||
2053 | If read_buffer doesn't have enough room to hold the result | |
2054 | of the conversion, reallocate it and adjust *P and *END. | |
2055 | ||
2056 | At the end, make *P point after the result of the conversion, and | |
2057 | return in *NCHARS the number of characters in the converted | |
2058 | text. */ | |
2059 | ||
2060 | static void | |
2061 | to_multibyte (p, end, nchars) | |
2062 | char **p, **end; | |
2063 | int *nchars; | |
2064 | { | |
2065 | int nbytes; | |
2066 | ||
2067 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 2068 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
2069 | { |
2070 | int offset = *p - read_buffer; | |
fe957e65 | 2071 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
2072 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
2073 | *p = read_buffer + offset; | |
2074 | *end = read_buffer + read_buffer_size; | |
2075 | } | |
2076 | ||
2077 | if (nbytes != *nchars) | |
2078 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
2079 | *p - read_buffer, nchars); | |
177c0ea7 | 2080 | |
a742d646 GM |
2081 | *p = read_buffer + nbytes; |
2082 | } | |
2083 | ||
2084 | ||
6428369f KH |
2085 | /* If the next token is ')' or ']' or '.', we store that character |
2086 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2087 | zero in *PCH and we read and return one lisp object. |
2088 | ||
2089 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2090 | ||
078e7b4a | 2091 | static Lisp_Object |
17634846 | 2092 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 2093 | register Lisp_Object readcharfun; |
e28552a4 | 2094 | int *pch; |
17634846 | 2095 | int first_in_list; |
078e7b4a JB |
2096 | { |
2097 | register int c; | |
4ad679f9 EN |
2098 | int uninterned_symbol = 0; |
2099 | ||
6428369f | 2100 | *pch = 0; |
078e7b4a JB |
2101 | |
2102 | retry: | |
2103 | ||
2104 | c = READCHAR; | |
9c97398c GM |
2105 | if (c < 0) |
2106 | end_of_file_error (); | |
078e7b4a JB |
2107 | |
2108 | switch (c) | |
2109 | { | |
2110 | case '(': | |
2111 | return read_list (0, readcharfun); | |
2112 | ||
2113 | case '[': | |
c15cfd1f | 2114 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2115 | |
2116 | case ')': | |
2117 | case ']': | |
078e7b4a | 2118 | { |
6428369f KH |
2119 | *pch = c; |
2120 | return Qnil; | |
078e7b4a JB |
2121 | } |
2122 | ||
2123 | case '#': | |
200f684e | 2124 | c = READCHAR; |
c2390933 RS |
2125 | if (c == '^') |
2126 | { | |
2127 | c = READCHAR; | |
2128 | if (c == '[') | |
2129 | { | |
2130 | Lisp_Object tmp; | |
c15cfd1f | 2131 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
2132 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
2133 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
2134 | error ("Invalid size char-table"); | |
2135 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 2136 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
2137 | return tmp; |
2138 | } | |
3701b5de KH |
2139 | else if (c == '^') |
2140 | { | |
2141 | c = READCHAR; | |
2142 | if (c == '[') | |
2143 | { | |
2144 | Lisp_Object tmp; | |
c15cfd1f | 2145 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
2146 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
2147 | error ("Invalid size char-table"); | |
2148 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2149 | XCHAR_TABLE (tmp)->top = Qnil; | |
2150 | return tmp; | |
2151 | } | |
2152 | Fsignal (Qinvalid_read_syntax, | |
2153 | Fcons (make_string ("#^^", 3), Qnil)); | |
2154 | } | |
c2390933 RS |
2155 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
2156 | } | |
2157 | if (c == '&') | |
2158 | { | |
2159 | Lisp_Object length; | |
2160 | length = read1 (readcharfun, pch, first_in_list); | |
2161 | c = READCHAR; | |
2162 | if (c == '"') | |
2163 | { | |
2164 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2165 | int size_in_chars |
2166 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2167 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2168 | |
2169 | UNREAD (c); | |
2170 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2171 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2172 | /* We used to print 1 char too many |
2173 | when the number of bits was a multiple of 8. | |
2174 | Accept such input in case it came from an old version. */ | |
2175 | && ! (XFASTINT (length) | |
d1ca81d9 | 2176 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
c2390933 | 2177 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 2178 | Fcons (make_string ("#&...", 5), Qnil)); |
177c0ea7 | 2179 | |
c2390933 | 2180 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2181 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2182 | size_in_chars); |
67d3b149 | 2183 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2184 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2185 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2186 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2187 | return val; |
2188 | } | |
ec3bbd7d | 2189 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 2190 | Qnil)); |
c2390933 | 2191 | } |
200f684e RS |
2192 | if (c == '[') |
2193 | { | |
2194 | /* Accept compiled functions at read-time so that we don't have to | |
2195 | build them using function calls. */ | |
748ef62f | 2196 | Lisp_Object tmp; |
c15cfd1f | 2197 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2198 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2199 | XVECTOR (tmp)->contents); | |
200f684e | 2200 | } |
748ef62f RS |
2201 | if (c == '(') |
2202 | { | |
2203 | Lisp_Object tmp; | |
2204 | struct gcpro gcpro1; | |
e28552a4 | 2205 | int ch; |
748ef62f RS |
2206 | |
2207 | /* Read the string itself. */ | |
17634846 | 2208 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2209 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
2210 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
2211 | GCPRO1 (tmp); | |
2212 | /* Read the intervals and their properties. */ | |
2213 | while (1) | |
2214 | { | |
2215 | Lisp_Object beg, end, plist; | |
2216 | ||
17634846 | 2217 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2218 | end = plist = Qnil; |
6428369f KH |
2219 | if (ch == ')') |
2220 | break; | |
2221 | if (ch == 0) | |
17634846 | 2222 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2223 | if (ch == 0) |
17634846 | 2224 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2225 | if (ch) |
748ef62f | 2226 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
2227 | Fcons (build_string ("invalid string property list"), |
2228 | Qnil)); | |
748ef62f RS |
2229 | Fset_text_properties (beg, end, plist, tmp); |
2230 | } | |
2231 | UNGCPRO; | |
2232 | return tmp; | |
2233 | } | |
177c0ea7 | 2234 | |
20ea2964 RS |
2235 | /* #@NUMBER is used to skip NUMBER following characters. |
2236 | That's used in .elc files to skip over doc strings | |
2237 | and function definitions. */ | |
2238 | if (c == '@') | |
2239 | { | |
2240 | int i, nskip = 0; | |
2241 | ||
2242 | /* Read a decimal integer. */ | |
2243 | while ((c = READCHAR) >= 0 | |
2244 | && c >= '0' && c <= '9') | |
2245 | { | |
2246 | nskip *= 10; | |
2247 | nskip += c - '0'; | |
2248 | } | |
2249 | if (c >= 0) | |
2250 | UNREAD (c); | |
177c0ea7 | 2251 | |
b2a30870 RS |
2252 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2253 | { | |
2254 | /* If we are supposed to force doc strings into core right now, | |
2255 | record the last string that we skipped, | |
2256 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2257 | |
2258 | /* But first exchange saved_doc_string | |
2259 | with prev_saved_doc_string, so we save two strings. */ | |
2260 | { | |
2261 | char *temp = saved_doc_string; | |
2262 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2263 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2264 | int temp_len = saved_doc_string_length; |
2265 | ||
2266 | saved_doc_string = prev_saved_doc_string; | |
2267 | saved_doc_string_size = prev_saved_doc_string_size; | |
2268 | saved_doc_string_position = prev_saved_doc_string_position; | |
2269 | saved_doc_string_length = prev_saved_doc_string_length; | |
2270 | ||
2271 | prev_saved_doc_string = temp; | |
2272 | prev_saved_doc_string_size = temp_size; | |
2273 | prev_saved_doc_string_position = temp_pos; | |
2274 | prev_saved_doc_string_length = temp_len; | |
2275 | } | |
2276 | ||
b2a30870 RS |
2277 | if (saved_doc_string_size == 0) |
2278 | { | |
2279 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2280 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2281 | } |
2282 | if (nskip > saved_doc_string_size) | |
2283 | { | |
2284 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2285 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2286 | saved_doc_string_size); | |
b2a30870 RS |
2287 | } |
2288 | ||
68c45bf0 | 2289 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2290 | |
2291 | /* Copy that many characters into saved_doc_string. */ | |
2292 | for (i = 0; i < nskip && c >= 0; i++) | |
2293 | saved_doc_string[i] = c = READCHAR; | |
2294 | ||
2295 | saved_doc_string_length = i; | |
2296 | } | |
2297 | else | |
b2a30870 RS |
2298 | { |
2299 | /* Skip that many characters. */ | |
2300 | for (i = 0; i < nskip && c >= 0; i++) | |
2301 | c = READCHAR; | |
2302 | } | |
d49f0c1a | 2303 | |
20ea2964 RS |
2304 | goto retry; |
2305 | } | |
e2518d02 RS |
2306 | if (c == '!') |
2307 | { | |
2308 | /* #! appears at the beginning of an executable file. | |
2309 | Skip the first line. */ | |
225c7a07 | 2310 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2311 | c = READCHAR; |
2312 | goto retry; | |
2313 | } | |
20ea2964 RS |
2314 | if (c == '$') |
2315 | return Vload_file_name; | |
2b6cae0c RS |
2316 | if (c == '\'') |
2317 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2318 | /* #:foo is the uninterned symbol named foo. */ |
2319 | if (c == ':') | |
2320 | { | |
2321 | uninterned_symbol = 1; | |
2322 | c = READCHAR; | |
2323 | goto default_label; | |
2324 | } | |
2325 | /* Reader forms that can reuse previously read objects. */ | |
2326 | if (c >= '0' && c <= '9') | |
2327 | { | |
2328 | int n = 0; | |
2329 | Lisp_Object tem; | |
2b6cae0c | 2330 | |
4ad679f9 EN |
2331 | /* Read a non-negative integer. */ |
2332 | while (c >= '0' && c <= '9') | |
2333 | { | |
2334 | n *= 10; | |
2335 | n += c - '0'; | |
2336 | c = READCHAR; | |
2337 | } | |
2338 | /* #n=object returns object, but associates it with n for #n#. */ | |
2339 | if (c == '=') | |
2340 | { | |
9e062b6c RS |
2341 | /* Make a placeholder for #n# to use temporarily */ |
2342 | Lisp_Object placeholder; | |
2343 | Lisp_Object cell; | |
2344 | ||
2345 | placeholder = Fcons(Qnil, Qnil); | |
2346 | cell = Fcons (make_number (n), placeholder); | |
2347 | read_objects = Fcons (cell, read_objects); | |
2348 | ||
2349 | /* Read the object itself. */ | |
4ad679f9 | 2350 | tem = read0 (readcharfun); |
9e062b6c RS |
2351 | |
2352 | /* Now put it everywhere the placeholder was... */ | |
2353 | substitute_object_in_subtree (tem, placeholder); | |
2354 | ||
2355 | /* ...and #n# will use the real value from now on. */ | |
2356 | Fsetcdr (cell, tem); | |
177c0ea7 | 2357 | |
4ad679f9 EN |
2358 | return tem; |
2359 | } | |
2360 | /* #n# returns a previously read object. */ | |
2361 | if (c == '#') | |
2362 | { | |
2363 | tem = Fassq (make_number (n), read_objects); | |
2364 | if (CONSP (tem)) | |
2365 | return XCDR (tem); | |
2366 | /* Fall through to error message. */ | |
2367 | } | |
bf5d1a17 GM |
2368 | else if (c == 'r' || c == 'R') |
2369 | return read_integer (readcharfun, n); | |
177c0ea7 | 2370 | |
4ad679f9 EN |
2371 | /* Fall through to error message. */ |
2372 | } | |
bf5d1a17 GM |
2373 | else if (c == 'x' || c == 'X') |
2374 | return read_integer (readcharfun, 16); | |
2375 | else if (c == 'o' || c == 'O') | |
2376 | return read_integer (readcharfun, 8); | |
2377 | else if (c == 'b' || c == 'B') | |
2378 | return read_integer (readcharfun, 2); | |
20ea2964 | 2379 | |
200f684e | 2380 | UNREAD (c); |
748ef62f | 2381 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
2382 | |
2383 | case ';': | |
2384 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2385 | goto retry; | |
2386 | ||
2387 | case '\'': | |
2388 | { | |
2389 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2390 | } | |
2391 | ||
17634846 RS |
2392 | case '`': |
2393 | if (first_in_list) | |
2394 | goto default_label; | |
2395 | else | |
2396 | { | |
2397 | Lisp_Object value; | |
2398 | ||
0ffbbdeb | 2399 | new_backquote_flag++; |
17634846 | 2400 | value = read0 (readcharfun); |
0ffbbdeb | 2401 | new_backquote_flag--; |
17634846 RS |
2402 | |
2403 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2404 | } | |
2405 | ||
2406 | case ',': | |
2407 | if (new_backquote_flag) | |
2408 | { | |
2409 | Lisp_Object comma_type = Qnil; | |
2410 | Lisp_Object value; | |
2411 | int ch = READCHAR; | |
2412 | ||
2413 | if (ch == '@') | |
2414 | comma_type = Qcomma_at; | |
2415 | else if (ch == '.') | |
2416 | comma_type = Qcomma_dot; | |
2417 | else | |
2418 | { | |
2419 | if (ch >= 0) UNREAD (ch); | |
2420 | comma_type = Qcomma; | |
2421 | } | |
2422 | ||
0ffbbdeb | 2423 | new_backquote_flag--; |
17634846 | 2424 | value = read0 (readcharfun); |
0ffbbdeb | 2425 | new_backquote_flag++; |
17634846 RS |
2426 | return Fcons (comma_type, Fcons (value, Qnil)); |
2427 | } | |
2428 | else | |
2429 | goto default_label; | |
2430 | ||
078e7b4a JB |
2431 | case '?': |
2432 | { | |
f6f79b37 | 2433 | int discard; |
df9c2be7 KS |
2434 | int next_char; |
2435 | int ok; | |
f6f79b37 | 2436 | |
078e7b4a | 2437 | c = READCHAR; |
9c97398c GM |
2438 | if (c < 0) |
2439 | end_of_file_error (); | |
078e7b4a | 2440 | |
b9284371 KS |
2441 | /* Accept `single space' syntax like (list ? x) where the |
2442 | whitespace character is SPC or TAB. | |
2443 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2444 | as there are well-established escape sequences for these. */ | |
2445 | if (c == ' ' || c == '\t') | |
2446 | return make_number (c); | |
2447 | ||
078e7b4a | 2448 | if (c == '\\') |
f6f79b37 | 2449 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2450 | else if (BASE_LEADING_CODE_P (c)) |
2451 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2452 | |
df9c2be7 KS |
2453 | next_char = READCHAR; |
2454 | if (next_char == '.') | |
2455 | { | |
2456 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2457 | int next_next_char = READCHAR; | |
2458 | UNREAD (next_next_char); | |
2459 | ||
2460 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2461 | || (next_next_char < 0200 |
2462 | && (index ("\"';([#?", next_next_char) | |
2463 | || (!first_in_list && next_next_char == '`') | |
2464 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2465 | } |
2466 | else | |
2467 | { | |
2468 | ok = (next_char <= 040 | |
e613ea97 KH |
2469 | || (next_char < 0200 |
2470 | && (index ("\"';()[]#?", next_char) | |
2471 | || (!first_in_list && next_char == '`') | |
2472 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2473 | } |
2474 | UNREAD (next_char); | |
2475 | if (!ok) | |
37cd4238 KS |
2476 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("?", 1), Qnil)); |
2477 | ||
6f7f43d5 | 2478 | return make_number (c); |
078e7b4a JB |
2479 | } |
2480 | ||
00a9a935 | 2481 | case '"': |
078e7b4a | 2482 | { |
a742d646 GM |
2483 | char *p = read_buffer; |
2484 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2485 | register int c; |
5150eeec RS |
2486 | /* 1 if we saw an escape sequence specifying |
2487 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2488 | int force_multibyte = 0; |
5150eeec | 2489 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2490 | a single-byte character. */ |
2491 | int force_singlebyte = 0; | |
5150eeec RS |
2492 | /* 1 if read_buffer contains multibyte text now. */ |
2493 | int is_multibyte = 0; | |
078e7b4a | 2494 | int cancel = 0; |
5150eeec | 2495 | int nchars = 0; |
078e7b4a JB |
2496 | |
2497 | while ((c = READCHAR) >= 0 | |
2498 | && c != '\"') | |
2499 | { | |
449fea39 | 2500 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2501 | { |
5d65df0d GM |
2502 | int offset = p - read_buffer; |
2503 | read_buffer = (char *) xrealloc (read_buffer, | |
2504 | read_buffer_size *= 2); | |
2505 | p = read_buffer + offset; | |
078e7b4a JB |
2506 | end = read_buffer + read_buffer_size; |
2507 | } | |
bed23cb2 | 2508 | |
078e7b4a | 2509 | if (c == '\\') |
03e88613 | 2510 | { |
f6f79b37 RS |
2511 | int byterep; |
2512 | ||
2513 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2514 | |
2515 | /* C is -1 if \ newline has just been seen */ | |
2516 | if (c == -1) | |
03e88613 | 2517 | { |
bed23cb2 RS |
2518 | if (p == read_buffer) |
2519 | cancel = 1; | |
03e88613 RS |
2520 | continue; |
2521 | } | |
bed23cb2 | 2522 | |
f6f79b37 | 2523 | if (byterep == 1) |
e7fc914b | 2524 | force_singlebyte = 1; |
f6f79b37 RS |
2525 | else if (byterep == 2) |
2526 | force_multibyte = 1; | |
03e88613 | 2527 | } |
6f7f43d5 | 2528 | |
5150eeec RS |
2529 | /* A character that must be multibyte forces multibyte. */ |
2530 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2531 | force_multibyte = 1; | |
2532 | ||
2533 | /* If we just discovered the need to be multibyte, | |
2534 | convert the text accumulated thus far. */ | |
2535 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2536 | { |
5150eeec RS |
2537 | is_multibyte = 1; |
2538 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2539 | } |
988c2f83 | 2540 | |
5150eeec RS |
2541 | /* Allow `\C- ' and `\C-?'. */ |
2542 | if (c == (CHAR_CTL | ' ')) | |
2543 | c = 0; | |
2544 | else if (c == (CHAR_CTL | '?')) | |
2545 | c = 127; | |
95af0924 | 2546 | |
5150eeec RS |
2547 | if (c & CHAR_SHIFT) |
2548 | { | |
2549 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2550 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2551 | c &= ~CHAR_SHIFT; | |
2552 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2553 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2554 | } |
5150eeec RS |
2555 | |
2556 | if (c & CHAR_META) | |
2557 | /* Move the meta bit to the right place for a string. */ | |
2558 | c = (c & ~CHAR_META) | 0x80; | |
2559 | if (c & CHAR_MODIFIER_MASK) | |
2560 | error ("Invalid modifier in string"); | |
2561 | ||
2562 | if (is_multibyte) | |
2563 | p += CHAR_STRING (c, p); | |
2564 | else | |
2565 | *p++ = c; | |
2566 | ||
2567 | nchars++; | |
078e7b4a | 2568 | } |
5150eeec | 2569 | |
6f7f43d5 | 2570 | if (c < 0) |
9c97398c | 2571 | end_of_file_error (); |
078e7b4a JB |
2572 | |
2573 | /* If purifying, and string starts with \ newline, | |
2574 | return zero instead. This is for doc strings | |
08564963 | 2575 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2576 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2577 | return make_number (0); |
2578 | ||
5150eeec RS |
2579 | if (is_multibyte || force_singlebyte) |
2580 | ; | |
94e554db RS |
2581 | else if (load_convert_to_unibyte) |
2582 | { | |
2583 | Lisp_Object string; | |
a742d646 | 2584 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2585 | if (p - read_buffer != nchars) |
2586 | { | |
2587 | string = make_multibyte_string (read_buffer, nchars, | |
2588 | p - read_buffer); | |
2589 | return Fstring_make_unibyte (string); | |
2590 | } | |
5150eeec RS |
2591 | /* We can make a unibyte string directly. */ |
2592 | is_multibyte = 0; | |
94e554db | 2593 | } |
8db9dc66 RS |
2594 | else if (EQ (readcharfun, Qget_file_char) |
2595 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2596 | { |
2597 | /* Nowadays, reading directly from a file is used only for | |
2598 | compiled Emacs Lisp files, and those always use the | |
2599 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2600 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2601 | byte-compile-dynamic = t). So make the string multibyte |
2602 | if the string contains any multibyte sequences. | |
2603 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2604 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2605 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2606 | } |
e28552a4 | 2607 | else |
bed23cb2 RS |
2608 | /* In all other cases, if we read these bytes as |
2609 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2610 | ; |
e7fc914b | 2611 | |
abb13b09 CW |
2612 | /* We want readchar_count to be the number of characters, not |
2613 | bytes. Hence we adjust for multibyte characters in the | |
2614 | string. ... But it doesn't seem to be necessary, because | |
2615 | READCHAR *does* read multibyte characters from buffers. */ | |
2616 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2617 | if (read_pure) |
491f16a2 | 2618 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2619 | is_multibyte); |
491f16a2 | 2620 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2621 | is_multibyte); |
078e7b4a JB |
2622 | } |
2623 | ||
109d300c JB |
2624 | case '.': |
2625 | { | |
109d300c JB |
2626 | int next_char = READCHAR; |
2627 | UNREAD (next_char); | |
2628 | ||
035eec48 | 2629 | if (next_char <= 040 |
e613ea97 | 2630 | || (next_char < 0200 |
95af0924 KS |
2631 | && (index ("\"';([#?", next_char) |
2632 | || (!first_in_list && next_char == '`') | |
2633 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2634 | { |
6428369f KH |
2635 | *pch = c; |
2636 | return Qnil; | |
109d300c JB |
2637 | } |
2638 | ||
2639 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2640 | below will now loop at least once, assuring that we will not | |
2641 | try to UNREAD two characters in a row. */ | |
2642 | } | |
078e7b4a | 2643 | default: |
17634846 | 2644 | default_label: |
078e7b4a JB |
2645 | if (c <= 040) goto retry; |
2646 | { | |
38404229 | 2647 | char *p = read_buffer; |
481c6336 | 2648 | int quoted = 0; |
078e7b4a JB |
2649 | |
2650 | { | |
38404229 | 2651 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2652 | |
6f7f43d5 | 2653 | while (c > 040 |
e613ea97 KH |
2654 | && (c >= 0200 |
2655 | || (!index ("\"';()[]#", c) | |
2656 | && !(!first_in_list && c == '`') | |
2657 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2658 | { |
449fea39 | 2659 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2660 | { |
5d65df0d GM |
2661 | int offset = p - read_buffer; |
2662 | read_buffer = (char *) xrealloc (read_buffer, | |
2663 | read_buffer_size *= 2); | |
2664 | p = read_buffer + offset; | |
078e7b4a JB |
2665 | end = read_buffer + read_buffer_size; |
2666 | } | |
177c0ea7 | 2667 | |
078e7b4a | 2668 | if (c == '\\') |
481c6336 RS |
2669 | { |
2670 | c = READCHAR; | |
4ab11c09 GM |
2671 | if (c == -1) |
2672 | end_of_file_error (); | |
481c6336 RS |
2673 | quoted = 1; |
2674 | } | |
6f7f43d5 | 2675 | |
bed23cb2 | 2676 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2677 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2678 | else |
2679 | *p++ = c; | |
6f7f43d5 | 2680 | |
078e7b4a JB |
2681 | c = READCHAR; |
2682 | } | |
2683 | ||
2684 | if (p == end) | |
2685 | { | |
5d65df0d GM |
2686 | int offset = p - read_buffer; |
2687 | read_buffer = (char *) xrealloc (read_buffer, | |
2688 | read_buffer_size *= 2); | |
2689 | p = read_buffer + offset; | |
2690 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2691 | } |
2692 | *p = 0; | |
2693 | if (c >= 0) | |
2694 | UNREAD (c); | |
2695 | } | |
2696 | ||
4ad679f9 | 2697 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2698 | { |
2699 | register char *p1; | |
2700 | register Lisp_Object val; | |
2701 | p1 = read_buffer; | |
2702 | if (*p1 == '+' || *p1 == '-') p1++; | |
2703 | /* Is it an integer? */ | |
2704 | if (p1 != p) | |
2705 | { | |
2706 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2707 | /* Integers can have trailing decimal points. */ |
2708 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2709 | if (p1 == p) |
2710 | /* It is an integer. */ | |
2711 | { | |
481c6336 RS |
2712 | if (p1[-1] == '.') |
2713 | p1[-1] = '\0'; | |
faca07fb RS |
2714 | if (sizeof (int) == sizeof (EMACS_INT)) |
2715 | XSETINT (val, atoi (read_buffer)); | |
2716 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2717 | XSETINT (val, atol (read_buffer)); | |
2718 | else | |
2719 | abort (); | |
481c6336 RS |
2720 | return val; |
2721 | } | |
2722 | } | |
481c6336 | 2723 | if (isfloat_string (read_buffer)) |
eb659c41 | 2724 | { |
a8972052 PE |
2725 | /* Compute NaN and infinities using 0.0 in a variable, |
2726 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2727 | than we are. */ |
3c329963 | 2728 | double zero = 0.0; |
a8972052 PE |
2729 | |
2730 | double value; | |
2731 | ||
2732 | /* Negate the value ourselves. This treats 0, NaNs, | |
2733 | and infinity properly on IEEE floating point hosts, | |
2734 | and works around a common bug where atof ("-0.0") | |
2735 | drops the sign. */ | |
2736 | int negative = read_buffer[0] == '-'; | |
2737 | ||
2738 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2739 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2740 | switch (p[-1]) |
eb659c41 | 2741 | { |
a8972052 PE |
2742 | case 'F': |
2743 | value = 1.0 / zero; | |
2744 | break; | |
2745 | case 'N': | |
2746 | value = zero / zero; | |
7690cbb0 RS |
2747 | |
2748 | /* If that made a "negative" NaN, negate it. */ | |
2749 | ||
2750 | { | |
2751 | int i; | |
2752 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2753 | ||
2754 | u_data.d = value; | |
2755 | u_minus_zero.d = - 0.0; | |
2756 | for (i = 0; i < sizeof (double); i++) | |
2757 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2758 | { | |
2759 | value = - value; | |
2760 | break; | |
2761 | } | |
2762 | } | |
2763 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2764 | break; |
2765 | default: | |
2766 | value = atof (read_buffer + negative); | |
2767 | break; | |
eb659c41 | 2768 | } |
a8972052 PE |
2769 | |
2770 | return make_float (negative ? - value : value); | |
eb659c41 | 2771 | } |
481c6336 | 2772 | } |
abb13b09 CW |
2773 | { |
2774 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2775 | : intern (read_buffer); | |
2776 | if (EQ (Vread_with_symbol_positions, Qt) | |
2777 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2778 | Vread_symbol_positions_list = |
abb13b09 CW |
2779 | /* Kind of a hack; this will probably fail if characters |
2780 | in the symbol name were escaped. Not really a big | |
2781 | deal, though. */ | |
f74db720 SM |
2782 | Fcons (Fcons (result, |
2783 | make_number (readchar_count | |
2784 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2785 | Vread_symbol_positions_list); |
2786 | return result; | |
2787 | } | |
078e7b4a JB |
2788 | } |
2789 | } | |
2790 | } | |
2791 | \f | |
9e062b6c RS |
2792 | |
2793 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2794 | static Lisp_Object seen_list; | |
2795 | ||
2796 | static void | |
2797 | substitute_object_in_subtree (object, placeholder) | |
2798 | Lisp_Object object; | |
2799 | Lisp_Object placeholder; | |
2800 | { | |
2801 | Lisp_Object check_object; | |
2802 | ||
2803 | /* We haven't seen any objects when we start. */ | |
2804 | seen_list = Qnil; | |
2805 | ||
2806 | /* Make all the substitutions. */ | |
2807 | check_object | |
2808 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2809 | |
9e062b6c RS |
2810 | /* Clear seen_list because we're done with it. */ |
2811 | seen_list = Qnil; | |
2812 | ||
2813 | /* The returned object here is expected to always eq the | |
2814 | original. */ | |
2815 | if (!EQ (check_object, object)) | |
2816 | error ("Unexpected mutation error in reader"); | |
2817 | } | |
2818 | ||
2819 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2820 | #define SUBSTITUTE(get_val, set_val) \ | |
2821 | { \ | |
2822 | Lisp_Object old_value = get_val; \ | |
2823 | Lisp_Object true_value \ | |
2824 | = substitute_object_recurse (object, placeholder,\ | |
2825 | old_value); \ | |
2826 | \ | |
2827 | if (!EQ (old_value, true_value)) \ | |
2828 | { \ | |
2829 | set_val; \ | |
2830 | } \ | |
2831 | } | |
2832 | ||
2833 | static Lisp_Object | |
2834 | substitute_object_recurse (object, placeholder, subtree) | |
2835 | Lisp_Object object; | |
2836 | Lisp_Object placeholder; | |
2837 | Lisp_Object subtree; | |
2838 | { | |
2839 | /* If we find the placeholder, return the target object. */ | |
2840 | if (EQ (placeholder, subtree)) | |
2841 | return object; | |
2842 | ||
2843 | /* If we've been to this node before, don't explore it again. */ | |
2844 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2845 | return subtree; | |
2846 | ||
2847 | /* If this node can be the entry point to a cycle, remember that | |
2848 | we've seen it. It can only be such an entry point if it was made | |
2849 | by #n=, which means that we can find it as a value in | |
2850 | read_objects. */ | |
2851 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2852 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2853 | |
9e062b6c RS |
2854 | /* Recurse according to subtree's type. |
2855 | Every branch must return a Lisp_Object. */ | |
2856 | switch (XTYPE (subtree)) | |
2857 | { | |
2858 | case Lisp_Vectorlike: | |
2859 | { | |
2860 | int i; | |
7c752c80 | 2861 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2862 | for (i = 0; i < length; i++) |
2863 | { | |
2864 | Lisp_Object idx = make_number (i); | |
2865 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2866 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2867 | } |
2868 | return subtree; | |
2869 | } | |
2870 | ||
2871 | case Lisp_Cons: | |
2872 | { | |
2873 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2874 | Fsetcar (subtree, true_value)); |
9e062b6c | 2875 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2876 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2877 | return subtree; |
2878 | } | |
2879 | ||
9e062b6c RS |
2880 | case Lisp_String: |
2881 | { | |
2882 | /* Check for text properties in each interval. | |
e61b9b87 | 2883 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2884 | |
d5db4077 | 2885 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2886 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2887 | |
0d74b006 SM |
2888 | traverse_intervals_noorder (root_interval, |
2889 | &substitute_in_interval, arg); | |
9e062b6c RS |
2890 | |
2891 | return subtree; | |
2892 | } | |
9e062b6c RS |
2893 | |
2894 | /* Other types don't recurse any further. */ | |
2895 | default: | |
2896 | return subtree; | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | /* Helper function for substitute_object_recurse. */ | |
2901 | static void | |
2902 | substitute_in_interval (interval, arg) | |
2903 | INTERVAL interval; | |
2904 | Lisp_Object arg; | |
2905 | { | |
2906 | Lisp_Object object = Fcar (arg); | |
2907 | Lisp_Object placeholder = Fcdr (arg); | |
2908 | ||
2909 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2910 | } | |
2911 | ||
2912 | \f | |
078e7b4a JB |
2913 | #define LEAD_INT 1 |
2914 | #define DOT_CHAR 2 | |
2915 | #define TRAIL_INT 4 | |
2916 | #define E_CHAR 8 | |
2917 | #define EXP_INT 16 | |
2918 | ||
2919 | int | |
2920 | isfloat_string (cp) | |
2921 | register char *cp; | |
2922 | { | |
c1a2f60a | 2923 | register int state; |
177c0ea7 | 2924 | |
d8578e58 RS |
2925 | char *start = cp; |
2926 | ||
078e7b4a JB |
2927 | state = 0; |
2928 | if (*cp == '+' || *cp == '-') | |
2929 | cp++; | |
2930 | ||
075027b1 | 2931 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2932 | { |
2933 | state |= LEAD_INT; | |
075027b1 RS |
2934 | while (*cp >= '0' && *cp <= '9') |
2935 | cp++; | |
078e7b4a JB |
2936 | } |
2937 | if (*cp == '.') | |
2938 | { | |
2939 | state |= DOT_CHAR; | |
2940 | cp++; | |
2941 | } | |
075027b1 | 2942 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2943 | { |
2944 | state |= TRAIL_INT; | |
075027b1 | 2945 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2946 | cp++; |
2947 | } | |
a35f88bf | 2948 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2949 | { |
2950 | state |= E_CHAR; | |
2951 | cp++; | |
e73997a1 RS |
2952 | if (*cp == '+' || *cp == '-') |
2953 | cp++; | |
078e7b4a | 2954 | } |
078e7b4a | 2955 | |
075027b1 | 2956 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2957 | { |
2958 | state |= EXP_INT; | |
075027b1 | 2959 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2960 | cp++; |
2961 | } | |
d8578e58 RS |
2962 | else if (cp == start) |
2963 | ; | |
eb659c41 RS |
2964 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2965 | { | |
2966 | state |= EXP_INT; | |
2967 | cp += 3; | |
2968 | } | |
2969 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2970 | { | |
2971 | state |= EXP_INT; | |
2972 | cp += 3; | |
2973 | } | |
2974 | ||
37579d7c | 2975 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2976 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2977 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2978 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2979 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2980 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2981 | } |
cc94f3b2 | 2982 | |
078e7b4a JB |
2983 | \f |
2984 | static Lisp_Object | |
c15cfd1f | 2985 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2986 | Lisp_Object readcharfun; |
c15cfd1f | 2987 | int bytecodeflag; |
078e7b4a JB |
2988 | { |
2989 | register int i; | |
2990 | register int size; | |
2991 | register Lisp_Object *ptr; | |
c15cfd1f | 2992 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2993 | register struct Lisp_Cons *otem; |
2994 | Lisp_Object len; | |
2995 | ||
2996 | tem = read_list (1, readcharfun); | |
2997 | len = Flength (tem); | |
2998 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2999 | ||
078e7b4a JB |
3000 | size = XVECTOR (vector)->size; |
3001 | ptr = XVECTOR (vector)->contents; | |
3002 | for (i = 0; i < size; i++) | |
3003 | { | |
c15cfd1f RS |
3004 | item = Fcar (tem); |
3005 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3006 | bytecode object, the docstring containing the bytecode and | |
3007 | constants values must be treated as unibyte and passed to | |
3008 | Fread, to get the actual bytecode string and constants vector. */ | |
3009 | if (bytecodeflag && load_force_doc_strings) | |
3010 | { | |
3011 | if (i == COMPILED_BYTECODE) | |
3012 | { | |
3013 | if (!STRINGP (item)) | |
6fa2b890 | 3014 | error ("Invalid byte code"); |
c15cfd1f RS |
3015 | |
3016 | /* Delay handling the bytecode slot until we know whether | |
3017 | it is lazily-loaded (we can tell by whether the | |
3018 | constants slot is nil). */ | |
3019 | ptr[COMPILED_CONSTANTS] = item; | |
3020 | item = Qnil; | |
3021 | } | |
3022 | else if (i == COMPILED_CONSTANTS) | |
3023 | { | |
3024 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3025 | ||
3026 | if (NILP (item)) | |
3027 | { | |
3028 | /* Coerce string to unibyte (like string-as-unibyte, | |
3029 | but without generating extra garbage and | |
3030 | guaranteeing no change in the contents). */ | |
bee91904 | 3031 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3032 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
3033 | |
3034 | item = Fread (bytestr); | |
3035 | if (!CONSP (item)) | |
6fa2b890 | 3036 | error ("Invalid byte code"); |
c15cfd1f RS |
3037 | |
3038 | otem = XCONS (item); | |
c1d497be KR |
3039 | bytestr = XCAR (item); |
3040 | item = XCDR (item); | |
c15cfd1f RS |
3041 | free_cons (otem); |
3042 | } | |
3043 | ||
3044 | /* Now handle the bytecode slot. */ | |
3045 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3046 | } | |
3047 | } | |
3048 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3049 | otem = XCONS (tem); |
3050 | tem = Fcdr (tem); | |
3051 | free_cons (otem); | |
3052 | } | |
3053 | return vector; | |
3054 | } | |
177c0ea7 | 3055 | |
6f7f43d5 RS |
3056 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3057 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3058 | and make structure pure. */ |
3059 | ||
3060 | static Lisp_Object | |
3061 | read_list (flag, readcharfun) | |
3062 | int flag; | |
3063 | register Lisp_Object readcharfun; | |
3064 | { | |
3065 | /* -1 means check next element for defun, | |
3066 | 0 means don't check, | |
3067 | 1 means already checked and found defun. */ | |
3068 | int defunflag = flag < 0 ? -1 : 0; | |
3069 | Lisp_Object val, tail; | |
3070 | register Lisp_Object elt, tem; | |
3071 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3072 | /* 0 is the normal case. |
b2a30870 | 3073 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3074 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3075 | int doc_reference = 0; |
078e7b4a | 3076 | |
17634846 RS |
3077 | /* Initialize this to 1 if we are reading a list. */ |
3078 | int first_in_list = flag <= 0; | |
3079 | ||
078e7b4a JB |
3080 | val = Qnil; |
3081 | tail = Qnil; | |
3082 | ||
3083 | while (1) | |
3084 | { | |
e28552a4 | 3085 | int ch; |
078e7b4a | 3086 | GCPRO2 (val, tail); |
17634846 | 3087 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3088 | UNGCPRO; |
20ea2964 | 3089 | |
17634846 RS |
3090 | first_in_list = 0; |
3091 | ||
821d417e | 3092 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3093 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3094 | && ! NILP (elt) |
821d417e RS |
3095 | && !NILP (Vpurify_flag)) |
3096 | { | |
3097 | if (NILP (Vdoc_file_name)) | |
3098 | /* We have not yet called Snarf-documentation, so assume | |
3099 | this file is described in the DOC-MM.NN file | |
3100 | and Snarf-documentation will fill in the right value later. | |
3101 | For now, replace the whole list with 0. */ | |
3102 | doc_reference = 1; | |
3103 | else | |
3104 | /* We have already called Snarf-documentation, so make a relative | |
3105 | file name for this file, so it can be found properly | |
3106 | in the installed Lisp directory. | |
3107 | We don't use Fexpand_file_name because that would make | |
3108 | the directory absolute now. */ | |
3109 | elt = concat2 (build_string ("../lisp/"), | |
3110 | Ffile_name_nondirectory (elt)); | |
3111 | } | |
b2a30870 | 3112 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3113 | && ! NILP (elt) |
b2a30870 RS |
3114 | && load_force_doc_strings) |
3115 | doc_reference = 2; | |
20ea2964 | 3116 | |
6428369f | 3117 | if (ch) |
078e7b4a JB |
3118 | { |
3119 | if (flag > 0) | |
3120 | { | |
6428369f | 3121 | if (ch == ']') |
078e7b4a | 3122 | return val; |
821d417e RS |
3123 | Fsignal (Qinvalid_read_syntax, |
3124 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 3125 | } |
6428369f | 3126 | if (ch == ')') |
078e7b4a | 3127 | return val; |
6428369f | 3128 | if (ch == '.') |
078e7b4a JB |
3129 | { |
3130 | GCPRO2 (val, tail); | |
265a9e55 | 3131 | if (!NILP (tail)) |
f5df591a | 3132 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3133 | else |
3134 | val = read0 (readcharfun); | |
17634846 | 3135 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3136 | UNGCPRO; |
6428369f | 3137 | if (ch == ')') |
821d417e RS |
3138 | { |
3139 | if (doc_reference == 1) | |
3140 | return make_number (0); | |
b2a30870 RS |
3141 | if (doc_reference == 2) |
3142 | { | |
3143 | /* Get a doc string from the file we are loading. | |
3144 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 3145 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3146 | /* Position is negative for user variables. */ |
3147 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3148 | if (pos >= saved_doc_string_position |
3149 | && pos < (saved_doc_string_position | |
3150 | + saved_doc_string_length)) | |
3151 | { | |
3152 | int start = pos - saved_doc_string_position; | |
3153 | int from, to; | |
3154 | ||
3155 | /* Process quoting with ^A, | |
3156 | and find the end of the string, | |
3157 | which is marked with ^_ (037). */ | |
3158 | for (from = start, to = start; | |
3159 | saved_doc_string[from] != 037;) | |
3160 | { | |
3161 | int c = saved_doc_string[from++]; | |
3162 | if (c == 1) | |
3163 | { | |
3164 | c = saved_doc_string[from++]; | |
3165 | if (c == 1) | |
3166 | saved_doc_string[to++] = c; | |
3167 | else if (c == '0') | |
3168 | saved_doc_string[to++] = 0; | |
3169 | else if (c == '_') | |
3170 | saved_doc_string[to++] = 037; | |
3171 | } | |
3172 | else | |
3173 | saved_doc_string[to++] = c; | |
3174 | } | |
3175 | ||
3176 | return make_string (saved_doc_string + start, | |
3177 | to - start); | |
3178 | } | |
c15cfd1f RS |
3179 | /* Look in prev_saved_doc_string the same way. */ |
3180 | else if (pos >= prev_saved_doc_string_position | |
3181 | && pos < (prev_saved_doc_string_position | |
3182 | + prev_saved_doc_string_length)) | |
3183 | { | |
3184 | int start = pos - prev_saved_doc_string_position; | |
3185 | int from, to; | |
3186 | ||
3187 | /* Process quoting with ^A, | |
3188 | and find the end of the string, | |
3189 | which is marked with ^_ (037). */ | |
3190 | for (from = start, to = start; | |
3191 | prev_saved_doc_string[from] != 037;) | |
3192 | { | |
3193 | int c = prev_saved_doc_string[from++]; | |
3194 | if (c == 1) | |
3195 | { | |
3196 | c = prev_saved_doc_string[from++]; | |
3197 | if (c == 1) | |
3198 | prev_saved_doc_string[to++] = c; | |
3199 | else if (c == '0') | |
3200 | prev_saved_doc_string[to++] = 0; | |
3201 | else if (c == '_') | |
3202 | prev_saved_doc_string[to++] = 037; | |
3203 | } | |
3204 | else | |
3205 | prev_saved_doc_string[to++] = c; | |
3206 | } | |
3207 | ||
3208 | return make_string (prev_saved_doc_string + start, | |
3209 | to - start); | |
3210 | } | |
b2a30870 | 3211 | else |
6fe9cce5 | 3212 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3213 | } |
3214 | ||
821d417e RS |
3215 | return val; |
3216 | } | |
078e7b4a JB |
3217 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
3218 | } | |
3219 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
3220 | } | |
3221 | tem = (read_pure && flag <= 0 | |
3222 | ? pure_cons (elt, Qnil) | |
3223 | : Fcons (elt, Qnil)); | |
265a9e55 | 3224 | if (!NILP (tail)) |
f5df591a | 3225 | XSETCDR (tail, tem); |
078e7b4a JB |
3226 | else |
3227 | val = tem; | |
3228 | tail = tem; | |
3229 | if (defunflag < 0) | |
3230 | defunflag = EQ (elt, Qdefun); | |
3231 | else if (defunflag > 0) | |
3232 | read_pure = 1; | |
3233 | } | |
3234 | } | |
3235 | \f | |
3236 | Lisp_Object Vobarray; | |
3237 | Lisp_Object initial_obarray; | |
3238 | ||
d007f5c8 RS |
3239 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3240 | ||
3241 | int oblookup_last_bucket_number; | |
3242 | ||
3243 | static int hash_string (); | |
d007f5c8 RS |
3244 | |
3245 | /* Get an error if OBARRAY is not an obarray. | |
3246 | If it is one, return it. */ | |
3247 | ||
078e7b4a JB |
3248 | Lisp_Object |
3249 | check_obarray (obarray) | |
3250 | Lisp_Object obarray; | |
3251 | { | |
8878319c | 3252 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3253 | { |
3254 | /* If Vobarray is now invalid, force it to be valid. */ | |
3255 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3256 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3257 | } |
3258 | return obarray; | |
3259 | } | |
3260 | ||
d007f5c8 RS |
3261 | /* Intern the C string STR: return a symbol with that name, |
3262 | interned in the current obarray. */ | |
078e7b4a JB |
3263 | |
3264 | Lisp_Object | |
3265 | intern (str) | |
4b2dd274 | 3266 | const char *str; |
078e7b4a JB |
3267 | { |
3268 | Lisp_Object tem; | |
3269 | int len = strlen (str); | |
153a17b7 | 3270 | Lisp_Object obarray; |
078e7b4a | 3271 | |
153a17b7 | 3272 | obarray = Vobarray; |
cfff016d | 3273 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3274 | obarray = check_obarray (obarray); |
e28552a4 | 3275 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3276 | if (SYMBOLP (tem)) |
078e7b4a | 3277 | return tem; |
87631ef7 | 3278 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3279 | } |
4ad679f9 EN |
3280 | |
3281 | /* Create an uninterned symbol with name STR. */ | |
3282 | ||
3283 | Lisp_Object | |
3284 | make_symbol (str) | |
3285 | char *str; | |
3286 | { | |
3287 | int len = strlen (str); | |
3288 | ||
3289 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3290 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3291 | : make_string (str, len))); |
3292 | } | |
d007f5c8 | 3293 | \f |
078e7b4a | 3294 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3295 | doc: /* Return the canonical symbol whose name is STRING. |
3296 | If there is none, one is created by this function and returned. | |
3297 | A second optional argument specifies the obarray to use; | |
3298 | it defaults to the value of `obarray'. */) | |
3299 | (string, obarray) | |
9391b698 | 3300 | Lisp_Object string, obarray; |
078e7b4a JB |
3301 | { |
3302 | register Lisp_Object tem, sym, *ptr; | |
3303 | ||
265a9e55 | 3304 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3305 | obarray = check_obarray (obarray); |
3306 | ||
b7826503 | 3307 | CHECK_STRING (string); |
078e7b4a | 3308 | |
d5db4077 KR |
3309 | tem = oblookup (obarray, SDATA (string), |
3310 | SCHARS (string), | |
3311 | SBYTES (string)); | |
cfff016d | 3312 | if (!INTEGERP (tem)) |
078e7b4a JB |
3313 | return tem; |
3314 | ||
265a9e55 | 3315 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3316 | string = Fpurecopy (string); |
3317 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3318 | |
3319 | if (EQ (obarray, initial_obarray)) | |
3320 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3321 | else | |
3322 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3323 | |
d5db4077 | 3324 | if ((SREF (string, 0) == ':') |
a458d45d | 3325 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3326 | { |
3327 | XSYMBOL (sym)->constant = 1; | |
3328 | XSYMBOL (sym)->value = sym; | |
3329 | } | |
a0549832 | 3330 | |
078e7b4a | 3331 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3332 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3333 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3334 | else | |
3335 | XSYMBOL (sym)->next = 0; | |
3336 | *ptr = sym; | |
3337 | return sym; | |
3338 | } | |
3339 | ||
3340 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3341 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3342 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3343 | symbol is searched for. | |
3344 | A second optional argument specifies the obarray to use; | |
3345 | it defaults to the value of `obarray'. */) | |
3346 | (name, obarray) | |
b55048d4 | 3347 | Lisp_Object name, obarray; |
078e7b4a | 3348 | { |
c2d47f4b | 3349 | register Lisp_Object tem, string; |
078e7b4a | 3350 | |
265a9e55 | 3351 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3352 | obarray = check_obarray (obarray); |
3353 | ||
b55048d4 GM |
3354 | if (!SYMBOLP (name)) |
3355 | { | |
b7826503 | 3356 | CHECK_STRING (name); |
c2d47f4b | 3357 | string = name; |
b55048d4 GM |
3358 | } |
3359 | else | |
c2d47f4b | 3360 | string = SYMBOL_NAME (name); |
078e7b4a | 3361 | |
c2d47f4b | 3362 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3363 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3364 | return Qnil; | |
3365 | else | |
078e7b4a | 3366 | return tem; |
078e7b4a | 3367 | } |
d007f5c8 RS |
3368 | \f |
3369 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3370 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3371 | The value is t if a symbol was found and deleted, nil otherwise. | |
3372 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3373 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3374 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3375 | (name, obarray) | |
d007f5c8 RS |
3376 | Lisp_Object name, obarray; |
3377 | { | |
3378 | register Lisp_Object string, tem; | |
3379 | int hash; | |
3380 | ||
3381 | if (NILP (obarray)) obarray = Vobarray; | |
3382 | obarray = check_obarray (obarray); | |
3383 | ||
3384 | if (SYMBOLP (name)) | |
d4c83cae | 3385 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3386 | else |
3387 | { | |
b7826503 | 3388 | CHECK_STRING (name); |
d007f5c8 RS |
3389 | string = name; |
3390 | } | |
3391 | ||
d5db4077 KR |
3392 | tem = oblookup (obarray, SDATA (string), |
3393 | SCHARS (string), | |
3394 | SBYTES (string)); | |
d007f5c8 RS |
3395 | if (INTEGERP (tem)) |
3396 | return Qnil; | |
3397 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3398 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3399 | return Qnil; | |
3400 | ||
44c6c019 GM |
3401 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3402 | XSYMBOL (tem)->constant = 0; | |
3403 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3404 | |
d007f5c8 RS |
3405 | hash = oblookup_last_bucket_number; |
3406 | ||
3407 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3408 | { |
3409 | if (XSYMBOL (tem)->next) | |
3410 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3411 | else | |
3412 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3413 | } | |
d007f5c8 RS |
3414 | else |
3415 | { | |
3416 | Lisp_Object tail, following; | |
3417 | ||
3418 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3419 | XSYMBOL (tail)->next; | |
3420 | tail = following) | |
3421 | { | |
3422 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3423 | if (EQ (following, tem)) | |
3424 | { | |
3425 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3426 | break; | |
3427 | } | |
3428 | } | |
3429 | } | |
3430 | ||
3431 | return Qt; | |
3432 | } | |
3433 | \f | |
3434 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3435 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3436 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3437 | |
3438 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3439 | |
3440 | Lisp_Object | |
e28552a4 | 3441 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3442 | Lisp_Object obarray; |
4b2dd274 | 3443 | register const char *ptr; |
e28552a4 | 3444 | int size, size_byte; |
078e7b4a | 3445 | { |
7a70b397 RS |
3446 | int hash; |
3447 | int obsize; | |
078e7b4a JB |
3448 | register Lisp_Object tail; |
3449 | Lisp_Object bucket, tem; | |
3450 | ||
cfff016d | 3451 | if (!VECTORP (obarray) |
7c79a684 | 3452 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3453 | { |
3454 | obarray = check_obarray (obarray); | |
3455 | obsize = XVECTOR (obarray)->size; | |
3456 | } | |
519418b3 RS |
3457 | /* This is sometimes needed in the middle of GC. */ |
3458 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3459 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3460 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3461 | hash %= obsize; |
3462 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3463 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3464 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3465 | ; |
cfff016d | 3466 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3467 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3468 | else |
3469 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3470 | { |
d5db4077 KR |
3471 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3472 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3473 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3474 | return tail; |
3475 | else if (XSYMBOL (tail)->next == 0) | |
3476 | break; | |
3477 | } | |
1805de4f | 3478 | XSETINT (tem, hash); |
078e7b4a JB |
3479 | return tem; |
3480 | } | |
3481 | ||
3482 | static int | |
3483 | hash_string (ptr, len) | |
4b2dd274 | 3484 | const unsigned char *ptr; |
078e7b4a JB |
3485 | int len; |
3486 | { | |
4b2dd274 KR |
3487 | register const unsigned char *p = ptr; |
3488 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3489 | register unsigned char c; |
3490 | register int hash = 0; | |
3491 | ||
3492 | while (p != end) | |
3493 | { | |
3494 | c = *p++; | |
3495 | if (c >= 0140) c -= 40; | |
3496 | hash = ((hash<<3) + (hash>>28) + c); | |
3497 | } | |
3498 | return hash & 07777777777; | |
3499 | } | |
d007f5c8 | 3500 | \f |
078e7b4a JB |
3501 | void |
3502 | map_obarray (obarray, fn, arg) | |
3503 | Lisp_Object obarray; | |
d5b28a9d | 3504 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3505 | Lisp_Object arg; |
3506 | { | |
3507 | register int i; | |
3508 | register Lisp_Object tail; | |
b7826503 | 3509 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3510 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3511 | { | |
3512 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3513 | if (SYMBOLP (tail)) |
078e7b4a JB |
3514 | while (1) |
3515 | { | |
3516 | (*fn) (tail, arg); | |
3517 | if (XSYMBOL (tail)->next == 0) | |
3518 | break; | |
1805de4f | 3519 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3520 | } |
3521 | } | |
3522 | } | |
3523 | ||
d5b28a9d | 3524 | void |
078e7b4a JB |
3525 | mapatoms_1 (sym, function) |
3526 | Lisp_Object sym, function; | |
3527 | { | |
3528 | call1 (function, sym); | |
3529 | } | |
3530 | ||
3531 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3532 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3533 | OBARRAY defaults to the value of `obarray'. */) | |
3534 | (function, obarray) | |
078e7b4a JB |
3535 | Lisp_Object function, obarray; |
3536 | { | |
265a9e55 | 3537 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3538 | obarray = check_obarray (obarray); |
3539 | ||
3540 | map_obarray (obarray, mapatoms_1, function); | |
3541 | return Qnil; | |
3542 | } | |
3543 | ||
5e88a39e | 3544 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3545 | |
3546 | void | |
3547 | init_obarray () | |
3548 | { | |
3549 | Lisp_Object oblength; | |
3550 | int hash; | |
3551 | Lisp_Object *tem; | |
3552 | ||
baf69866 | 3553 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3554 | |
491f16a2 | 3555 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3556 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3557 | initial_obarray = Vobarray; | |
3558 | staticpro (&initial_obarray); | |
3559 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3560 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3561 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3562 | |
078e7b4a JB |
3563 | /* These locals are to kludge around a pyramid compiler bug. */ |
3564 | hash = hash_string ("nil", 3); | |
3565 | /* Separate statement here to avoid VAXC bug. */ | |
3566 | hash %= OBARRAY_SIZE; | |
3567 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3568 | *tem = Qnil; | |
3569 | ||
491f16a2 | 3570 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3571 | XSYMBOL (Qnil)->function = Qunbound; |
3572 | XSYMBOL (Qunbound)->value = Qunbound; | |
3573 | XSYMBOL (Qunbound)->function = Qunbound; | |
3574 | ||
3575 | Qt = intern ("t"); | |
3576 | XSYMBOL (Qnil)->value = Qnil; | |
3577 | XSYMBOL (Qnil)->plist = Qnil; | |
3578 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3579 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3580 | |
3581 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3582 | Vpurify_flag = Qt; | |
3583 | ||
3584 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3585 | staticpro (&Qvariable_documentation); |
078e7b4a | 3586 | |
449fea39 | 3587 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3588 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3589 | } |
3590 | \f | |
3591 | void | |
3592 | defsubr (sname) | |
3593 | struct Lisp_Subr *sname; | |
3594 | { | |
3595 | Lisp_Object sym; | |
3596 | sym = intern (sname->symbol_name); | |
1805de4f | 3597 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3598 | } |
3599 | ||
3600 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3601 | void | |
3602 | defalias (sname, string) | |
3603 | struct Lisp_Subr *sname; | |
3604 | char *string; | |
3605 | { | |
3606 | Lisp_Object sym; | |
3607 | sym = intern (string); | |
1805de4f | 3608 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3609 | } |
3610 | #endif /* NOTDEF */ | |
3611 | ||
078e7b4a | 3612 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3613 | to a C variable of type int. Sample call: */ |
5de38842 | 3614 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3615 | void |
e9e00ff2 | 3616 | defvar_int (namestring, address) |
078e7b4a | 3617 | char *namestring; |
31ade731 | 3618 | EMACS_INT *address; |
078e7b4a | 3619 | { |
1a0f90f7 | 3620 | Lisp_Object sym, val; |
078e7b4a | 3621 | sym = intern (namestring); |
1a0f90f7 | 3622 | val = allocate_misc (); |
47e28b2c | 3623 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3624 | XINTFWD (val)->intvar = address; |
44c6c019 | 3625 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3626 | } |
3627 | ||
f0529b5b PJ |
3628 | /* Similar but define a variable whose value is t if address contains 1, |
3629 | nil if address contains 0 */ | |
078e7b4a | 3630 | void |
e9e00ff2 | 3631 | defvar_bool (namestring, address) |
078e7b4a JB |
3632 | char *namestring; |
3633 | int *address; | |
078e7b4a | 3634 | { |
1a0f90f7 | 3635 | Lisp_Object sym, val; |
078e7b4a | 3636 | sym = intern (namestring); |
1a0f90f7 | 3637 | val = allocate_misc (); |
47e28b2c | 3638 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3639 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3640 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3641 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3642 | } |
3643 | ||
1a0f90f7 KH |
3644 | /* Similar but define a variable whose value is the Lisp Object stored |
3645 | at address. Two versions: with and without gc-marking of the C | |
3646 | variable. The nopro version is used when that variable will be | |
3647 | gc-marked for some other reason, since marking the same slot twice | |
3648 | can cause trouble with strings. */ | |
078e7b4a | 3649 | void |
1a0f90f7 | 3650 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3651 | char *namestring; |
3652 | Lisp_Object *address; | |
078e7b4a | 3653 | { |
1a0f90f7 | 3654 | Lisp_Object sym, val; |
078e7b4a | 3655 | sym = intern (namestring); |
1a0f90f7 | 3656 | val = allocate_misc (); |
47e28b2c | 3657 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3658 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3659 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3660 | } |
3661 | ||
078e7b4a | 3662 | void |
1a0f90f7 | 3663 | defvar_lisp (namestring, address) |
078e7b4a JB |
3664 | char *namestring; |
3665 | Lisp_Object *address; | |
078e7b4a | 3666 | { |
1a0f90f7 KH |
3667 | defvar_lisp_nopro (namestring, address); |
3668 | staticpro (address); | |
078e7b4a JB |
3669 | } |
3670 | ||
078e7b4a | 3671 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3672 | the current buffer. address is the address of the slot in the buffer |
3673 | that is current now. */ | |
078e7b4a JB |
3674 | |
3675 | void | |
4360b0c6 | 3676 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3677 | char *namestring; |
3678 | Lisp_Object *address; | |
4360b0c6 | 3679 | Lisp_Object type; |
078e7b4a JB |
3680 | char *doc; |
3681 | { | |
1a0f90f7 | 3682 | Lisp_Object sym, val; |
078e7b4a | 3683 | int offset; |
078e7b4a JB |
3684 | |
3685 | sym = intern (namestring); | |
1a0f90f7 | 3686 | val = allocate_misc (); |
078e7b4a JB |
3687 | offset = (char *)address - (char *)current_buffer; |
3688 | ||
47e28b2c | 3689 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3690 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3691 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3692 | PER_BUFFER_SYMBOL (offset) = sym; |
3693 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3694 | |
11fd416e | 3695 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3696 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3697 | slot of buffer_local_flags */ | |
3698 | abort (); | |
3699 | } | |
3700 | ||
950c215d KH |
3701 | |
3702 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3703 | at a particular offset in the current kboard object. */ |
950c215d KH |
3704 | |
3705 | void | |
4ac38690 | 3706 | defvar_kboard (namestring, offset) |
950c215d KH |
3707 | char *namestring; |
3708 | int offset; | |
3709 | { | |
3710 | Lisp_Object sym, val; | |
3711 | sym = intern (namestring); | |
3712 | val = allocate_misc (); | |
47e28b2c | 3713 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3714 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3715 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3716 | } |
078e7b4a | 3717 | \f |
11938f10 KH |
3718 | /* Record the value of load-path used at the start of dumping |
3719 | so we can see if the site changed it later during dumping. */ | |
3720 | static Lisp_Object dump_path; | |
3721 | ||
d5b28a9d | 3722 | void |
279499f0 | 3723 | init_lread () |
078e7b4a | 3724 | { |
46947372 | 3725 | char *normal; |
e73997a1 | 3726 | int turn_off_warning = 0; |
078e7b4a | 3727 | |
279499f0 | 3728 | /* Compute the default load-path. */ |
46947372 JB |
3729 | #ifdef CANNOT_DUMP |
3730 | normal = PATH_LOADSEARCH; | |
e065a56e | 3731 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3732 | #else |
3733 | if (NILP (Vpurify_flag)) | |
3734 | normal = PATH_LOADSEARCH; | |
279499f0 | 3735 | else |
46947372 | 3736 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3737 | |
46947372 JB |
3738 | /* In a dumped Emacs, we normally have to reset the value of |
3739 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3740 | uses ../lisp, instead of the path of the installed elisp | |
3741 | libraries. However, if it appears that Vload_path was changed | |
3742 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3743 | if (initialized) |
3744 | { | |
4746118a | 3745 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3746 | { |
3747 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3748 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3749 | { |
3ddff138 RS |
3750 | Lisp_Object tem, tem1, sitelisp; |
3751 | ||
3752 | /* Remove site-lisp dirs from path temporarily and store | |
3753 | them in sitelisp, then conc them on at the end so | |
3754 | they're always first in path. */ | |
3755 | sitelisp = Qnil; | |
3756 | while (1) | |
3757 | { | |
3758 | tem = Fcar (Vload_path); | |
3759 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3760 | tem, Qnil); | |
3761 | if (!NILP (tem1)) | |
3762 | { | |
3763 | Vload_path = Fcdr (Vload_path); | |
3764 | sitelisp = Fcons (tem, sitelisp); | |
3765 | } | |
3766 | else | |
3767 | break; | |
3768 | } | |
3769 | ||
74180aa4 | 3770 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3771 | installation dir, if it exists. */ |
74180aa4 RS |
3772 | tem = Fexpand_file_name (build_string ("lisp"), |
3773 | Vinstallation_directory); | |
3a3056e5 RS |
3774 | tem1 = Ffile_exists_p (tem); |
3775 | if (!NILP (tem1)) | |
3776 | { | |
3777 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3778 | { |
3779 | turn_off_warning = 1; | |
3ddff138 | 3780 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3781 | } |
3a3056e5 RS |
3782 | } |
3783 | else | |
3784 | /* That dir doesn't exist, so add the build-time | |
3785 | Lisp dirs instead. */ | |
3786 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3787 | |
9fbc0116 RS |
3788 | /* Add leim under the installation dir, if it exists. */ |
3789 | tem = Fexpand_file_name (build_string ("leim"), | |
3790 | Vinstallation_directory); | |
3791 | tem1 = Ffile_exists_p (tem); | |
3792 | if (!NILP (tem1)) | |
3793 | { | |
3794 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3795 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3796 | } |
3797 | ||
c478f98c RS |
3798 | /* Add site-list under the installation dir, if it exists. */ |
3799 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3800 | Vinstallation_directory); | |
3801 | tem1 = Ffile_exists_p (tem); | |
3802 | if (!NILP (tem1)) | |
3803 | { | |
3804 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3805 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3806 | } |
0f337465 RS |
3807 | |
3808 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3809 | and it is run from where it was built, add to load-path |
3810 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3811 | |
3812 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3813 | { | |
33046fc9 RS |
3814 | Lisp_Object tem2; |
3815 | ||
0f337465 RS |
3816 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3817 | Vinstallation_directory); | |
3818 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3819 | |
3820 | /* Don't be fooled if they moved the entire source tree | |
3821 | AFTER dumping Emacs. If the build directory is indeed | |
3822 | different from the source dir, src/Makefile.in and | |
3823 | src/Makefile will not be found together. */ | |
3824 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3825 | Vinstallation_directory); | |
3826 | tem2 = Ffile_exists_p (tem); | |
3827 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3828 | { |
3829 | tem = Fexpand_file_name (build_string ("lisp"), | |
3830 | Vsource_directory); | |
3831 | ||
3832 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3833 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3834 | |
9fbc0116 RS |
3835 | tem = Fexpand_file_name (build_string ("leim"), |
3836 | Vsource_directory); | |
3837 | ||
3838 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3839 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3840 | |
0f337465 RS |
3841 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3842 | Vsource_directory); | |
3843 | ||
3844 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3845 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3846 | } |
3847 | } | |
3ddff138 RS |
3848 | if (!NILP (sitelisp)) |
3849 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3850 | } |
3851 | } | |
4746118a JB |
3852 | } |
3853 | else | |
11938f10 | 3854 | { |
7b396c6c RS |
3855 | /* NORMAL refers to the lisp dir in the source directory. */ |
3856 | /* We used to add ../lisp at the front here, but | |
3857 | that caused trouble because it was copied from dump_path | |
3858 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3859 | It should be unnecessary. */ | |
3860 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3861 | dump_path = Vload_path; |
3862 | } | |
46947372 | 3863 | #endif |
279499f0 | 3864 | |
536d6baa | 3865 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3866 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3867 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3868 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3869 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3870 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3871 | the "standard" paths may not exist and would be overridden by | |
3872 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3873 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3874 | |
078e7b4a | 3875 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3876 | if (!turn_off_warning) |
3877 | { | |
3878 | Lisp_Object path_tail; | |
078e7b4a | 3879 | |
e73997a1 RS |
3880 | for (path_tail = Vload_path; |
3881 | !NILP (path_tail); | |
c1d497be | 3882 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3883 | { |
3884 | Lisp_Object dirfile; | |
3885 | dirfile = Fcar (path_tail); | |
3886 | if (STRINGP (dirfile)) | |
3887 | { | |
3888 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3889 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3890 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3891 | XCAR (path_tail)); |
e73997a1 RS |
3892 | } |
3893 | } | |
3894 | } | |
536d6baa | 3895 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3896 | |
3897 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3898 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3899 | #ifndef CANNOT_DUMP |
46947372 JB |
3900 | if (NILP (Vpurify_flag) |
3901 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3902 | #endif |
279499f0 | 3903 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3904 | |
3905 | Vvalues = Qnil; | |
3906 | ||
078e7b4a | 3907 | load_in_progress = 0; |
4e53f562 | 3908 | Vload_file_name = Qnil; |
d2c6be7f RS |
3909 | |
3910 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3911 | |
3912 | Vstandard_input = Qt; | |
f74b0705 | 3913 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3914 | } |
3915 | ||
85496b8c RS |
3916 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3917 | does not exist. Print it on stderr and put it in *Message*. */ | |
3918 | ||
d5b28a9d | 3919 | void |
85496b8c RS |
3920 | dir_warning (format, dirname) |
3921 | char *format; | |
3922 | Lisp_Object dirname; | |
3923 | { | |
3924 | char *buffer | |
d5db4077 | 3925 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3926 | |
d5db4077 KR |
3927 | fprintf (stderr, format, SDATA (dirname)); |
3928 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
3929 | /* Don't log the warning before we've initialized!! */ |
3930 | if (initialized) | |
3931 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3932 | } |
3933 | ||
078e7b4a | 3934 | void |
279499f0 | 3935 | syms_of_lread () |
078e7b4a JB |
3936 | { |
3937 | defsubr (&Sread); | |
3938 | defsubr (&Sread_from_string); | |
3939 | defsubr (&Sintern); | |
3940 | defsubr (&Sintern_soft); | |
d007f5c8 | 3941 | defsubr (&Sunintern); |
971a4293 | 3942 | defsubr (&Sget_load_suffixes); |
078e7b4a | 3943 | defsubr (&Sload); |
228d4b1c | 3944 | defsubr (&Seval_buffer); |
078e7b4a JB |
3945 | defsubr (&Seval_region); |
3946 | defsubr (&Sread_char); | |
3947 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3948 | defsubr (&Sread_event); |
078e7b4a JB |
3949 | defsubr (&Sget_file_char); |
3950 | defsubr (&Smapatoms); | |
86d00812 | 3951 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
3952 | |
3953 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
3954 | doc: /* Symbol table for use by `intern' and `read'. |
3955 | It is a vector whose length ought to be prime for best results. | |
3956 | The vector's contents don't make sense if examined from Lisp programs; | |
3957 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
3958 | |
3959 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
3960 | doc: /* List of values of all expressions which were read, evaluated and printed. |
3961 | Order is reverse chronological. */); | |
078e7b4a JB |
3962 | |
3963 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
3964 | doc: /* Stream for read to get input from. |
3965 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
3966 | Vstandard_input = Qt; |
3967 | ||
abb13b09 CW |
3968 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
3969 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
3970 | ||
3971 | If this variable is a buffer, then only forms read from that buffer | |
3972 | will be added to `read-symbol-positions-list'. | |
3973 | If this variable is t, then all read forms will be added. | |
3974 | The effect of all other values other than nil are not currently | |
3975 | defined, although they may be in the future. | |
3976 | ||
3977 | The positions are relative to the last call to `read' or | |
3978 | `read-from-string'. It is probably a bad idea to set this variable at | |
3979 | the toplevel; bind it instead. */); | |
3980 | Vread_with_symbol_positions = Qnil; | |
3981 | ||
3982 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 3983 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
3984 | This variable is modified during calls to `read' or |
3985 | `read-from-string', but only when `read-with-symbol-positions' is | |
3986 | non-nil. | |
3987 | ||
3988 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 3989 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
3990 | symbol from the position where `read' or `read-from-string' started. |
3991 | ||
3992 | Note that a symbol will appear multiple times in this list, if it was | |
3993 | read multiple times. The list is in the same order as the symbols | |
3994 | were read in. */); | |
177c0ea7 | 3995 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 3996 | |
078e7b4a | 3997 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
3998 | doc: /* *List of directories to search for files to load. |
3999 | Each element is a string (directory name) or nil (try default directory). | |
4000 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4001 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4002 | |
e61b9b87 | 4003 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4004 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4005 | This list should not include the empty string. | |
4006 | `load' and related functions try to append these suffixes, in order, | |
4007 | to the specified file name if a Lisp suffix is allowed or required. */); | |
e61b9b87 SM |
4008 | Vload_suffixes = Fcons (build_string (".elc"), |
4009 | Fcons (build_string (".el"), Qnil)); | |
971a4293 LT |
4010 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4011 | doc: /* List of suffixes that indicate representations of \ | |
4012 | the same file. | |
4013 | This list should normally start with the empty string. | |
4014 | ||
4015 | Enabling Auto Compression mode appends the suffixes in | |
4016 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4017 | mode removes them again. `load' and related functions use this list to | |
4018 | determine whether they should look for compressed versions of a file | |
4019 | and, if so, which suffixes they should try to append to the file name | |
4020 | in order to do so. However, if you want to customize which suffixes | |
4021 | the loading functions recognize as compression suffixes, you should | |
4022 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
ddb716ef | 4023 | /* We don't use empty_string because it's not initialized yet. */ |
971a4293 | 4024 | Vload_file_rep_suffixes = Fcons (build_string (""), Qnil); |
e61b9b87 | 4025 | |
078e7b4a | 4026 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
5de38842 | 4027 | doc: /* Non-nil iff inside of `load'. */); |
078e7b4a JB |
4028 | |
4029 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4030 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4031 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4032 | ||
4033 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4034 | a symbol \(a feature name). | |
4035 | ||
4036 | When `load' is run and the file-name argument matches an element's | |
4037 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4038 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4039 | ||
4040 | An error in FORMS does not undo the load, but does prevent execution of | |
4041 | the rest of the FORMS. */); | |
078e7b4a JB |
4042 | Vafter_load_alist = Qnil; |
4043 | ||
ae321d28 | 4044 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 4045 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
4046 | Each alist element is a list that starts with a file name, |
4047 | except for one element (optional) that starts with nil and describes | |
4048 | definitions evaluated from buffers not visiting files. | |
6bb6da3e AM |
4049 | |
4050 | The file name is absolute and is the true file name (i.e. it doesn't | |
4051 | contain symbolic links) of the loaded file. | |
4052 | ||
1bc2cdb1 | 4053 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 4054 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
1bc2cdb1 RS |
4055 | `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'. |
4056 | An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)', | |
6042a06e | 4057 | and means that SYMBOL was an autoload before this file redefined it |
0fc213e9 RS |
4058 | as a function. |
4059 | ||
b502a9a1 RS |
4060 | During preloading, the file name recorded is relative to the main Lisp |
4061 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4062 | Vload_history = Qnil; |
4063 | ||
20ea2964 | 4064 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4065 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4066 | Vload_file_name = Qnil; |
4067 | ||
4116ab9f | 4068 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4069 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4070 | If the file loaded had extension `.elc', and the corresponding source file |
4071 | exists, this variable contains the name of source file, suitable for use | |
5de38842 | 4072 | by functions like `custom-save-all' which edit the init file. */); |
4116ab9f KH |
4073 | Vuser_init_file = Qnil; |
4074 | ||
8a1f1537 | 4075 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4076 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4077 | Vcurrent_load_list = Qnil; |
4078 | ||
84a15045 | 4079 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4080 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4081 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4082 | Vload_read_function = Qnil; |
4083 | ||
fe0e03f3 | 4084 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
5de38842 PJ |
4085 | doc: /* Function called in `load' for loading an Emacs lisp source file. |
4086 | This function is for doing code conversion before reading the source file. | |
4087 | If nil, loading is done without any code conversion. | |
4088 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4089 | FULLNAME is the full name of FILE. | |
4090 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4091 | Vload_source_file_function = Qnil; |
4092 | ||
b2a30870 | 4093 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4094 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4095 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4096 | load_force_doc_strings = 0; |
4097 | ||
94e554db | 4098 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4099 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4100 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4101 | and is not meant for users to change. */); | |
94e554db RS |
4102 | load_convert_to_unibyte = 0; |
4103 | ||
1521a8fa | 4104 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4105 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4106 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4107 | Vsource_directory |
4108 | = Fexpand_file_name (build_string ("../"), | |
4109 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4110 | ||
4b104c41 | 4111 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4112 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4113 | Vpreloaded_file_list = Qnil; |
4114 | ||
1ffcc3b1 | 4115 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4116 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4117 | Vbyte_boolean_vars = Qnil; |
4118 | ||
da84f340 | 4119 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4120 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4121 | Some versions of XEmacs use different byte codes than Emacs. These | |
4122 | incompatible byte codes can make Emacs crash when it tries to execute | |
4123 | them. */); | |
da84f340 GM |
4124 | load_dangerous_libraries = 0; |
4125 | ||
bb970e67 | 4126 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4127 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4128 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4129 | from the file, and matches them against this regular expression. | |
4130 | When the regular expression matches, the file is considered to be safe | |
4131 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4132 | Vbytecomp_version_regexp |
f2e7d5eb | 4133 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4134 | |
3f39f996 RS |
4135 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4136 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4137 | Veval_buffer_list = Qnil; | |
4138 | ||
a90ba1e2 KH |
4139 | /* Vsource_directory was initialized in init_lread. */ |
4140 | ||
d2c6be7f RS |
4141 | load_descriptor_list = Qnil; |
4142 | staticpro (&load_descriptor_list); | |
4143 | ||
8a1f1537 RS |
4144 | Qcurrent_load_list = intern ("current-load-list"); |
4145 | staticpro (&Qcurrent_load_list); | |
4146 | ||
078e7b4a JB |
4147 | Qstandard_input = intern ("standard-input"); |
4148 | staticpro (&Qstandard_input); | |
4149 | ||
4150 | Qread_char = intern ("read-char"); | |
4151 | staticpro (&Qread_char); | |
4152 | ||
4153 | Qget_file_char = intern ("get-file-char"); | |
4154 | staticpro (&Qget_file_char); | |
7bd279cd | 4155 | |
17634846 RS |
4156 | Qbackquote = intern ("`"); |
4157 | staticpro (&Qbackquote); | |
4158 | Qcomma = intern (","); | |
4159 | staticpro (&Qcomma); | |
4160 | Qcomma_at = intern (",@"); | |
4161 | staticpro (&Qcomma_at); | |
4162 | Qcomma_dot = intern (",."); | |
4163 | staticpro (&Qcomma_dot); | |
4164 | ||
74549846 RS |
4165 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4166 | staticpro (&Qinhibit_file_name_operation); | |
4167 | ||
7bd279cd RS |
4168 | Qascii_character = intern ("ascii-character"); |
4169 | staticpro (&Qascii_character); | |
c2225d00 | 4170 | |
2b6cae0c RS |
4171 | Qfunction = intern ("function"); |
4172 | staticpro (&Qfunction); | |
4173 | ||
c2225d00 RS |
4174 | Qload = intern ("load"); |
4175 | staticpro (&Qload); | |
20ea2964 RS |
4176 | |
4177 | Qload_file_name = intern ("load-file-name"); | |
4178 | staticpro (&Qload_file_name); | |
11938f10 | 4179 | |
3f39f996 RS |
4180 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4181 | staticpro (&Qeval_buffer_list); | |
4182 | ||
6bb6da3e AM |
4183 | Qfile_truename = intern ("file-truename"); |
4184 | staticpro (&Qfile_truename) ; | |
4185 | ||
4186 | Qdo_after_load_evaluation = intern ("do-after-load-evaluation"); | |
4187 | staticpro (&Qdo_after_load_evaluation) ; | |
4188 | ||
11938f10 | 4189 | staticpro (&dump_path); |
4ad679f9 EN |
4190 | |
4191 | staticpro (&read_objects); | |
4192 | read_objects = Qnil; | |
9e062b6c | 4193 | staticpro (&seen_list); |
f153db13 | 4194 | seen_list = Qnil; |
177c0ea7 | 4195 | |
7ee3bd7b GM |
4196 | Vloads_in_progress = Qnil; |
4197 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4198 | } |
ab5796a9 MB |
4199 | |
4200 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4201 | (do not change this comment) */ |