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, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 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 | |
684d6f5b | 10 | the Free Software Foundation; either version 3, 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" |
66cd0949 | 39 | #include "blockinput.h" |
078e7b4a JB |
40 | |
41 | #ifdef lint | |
42 | #include <sys/inode.h> | |
43 | #endif /* lint */ | |
44 | ||
79051982 RS |
45 | #ifdef MSDOS |
46 | #if __DJGPP__ < 2 | |
47 | #include <unistd.h> /* to get X_OK */ | |
48 | #endif | |
49 | #include "msdos.h" | |
50 | #endif | |
51 | ||
c1a2f60a AS |
52 | #ifdef HAVE_UNISTD_H |
53 | #include <unistd.h> | |
54 | #endif | |
55 | ||
078e7b4a JB |
56 | #ifndef X_OK |
57 | #define X_OK 01 | |
58 | #endif | |
59 | ||
078e7b4a | 60 | #include <math.h> |
078e7b4a | 61 | |
c011e9a5 RS |
62 | #ifdef HAVE_SETLOCALE |
63 | #include <locale.h> | |
64 | #endif /* HAVE_SETLOCALE */ | |
65 | ||
bcdec28b DL |
66 | #ifdef HAVE_FCNTL_H |
67 | #include <fcntl.h> | |
68 | #endif | |
f7d279f0 RS |
69 | #ifndef O_RDONLY |
70 | #define O_RDONLY 0 | |
71 | #endif | |
72 | ||
79cf851c | 73 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
74 | #define file_offset off_t |
75 | #define file_tell ftello | |
76 | #else | |
77 | #define file_offset long | |
78 | #define file_tell ftell | |
79 | #endif | |
80 | ||
03695ace | 81 | #ifndef USE_CRT_DLL |
2c1b5dbe | 82 | extern int errno; |
03695ace | 83 | #endif |
2c1b5dbe | 84 | |
8a1f1537 | 85 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 86 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 87 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 88 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 89 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 90 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
6bb6da3e | 91 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd RS |
92 | |
93 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 94 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 95 | |
e0f24100 | 96 | /* non-zero if inside `load' */ |
078e7b4a JB |
97 | int load_in_progress; |
98 | ||
1521a8fa RS |
99 | /* Directory in which the sources were found. */ |
100 | Lisp_Object Vsource_directory; | |
101 | ||
e61b9b87 | 102 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 103 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 104 | |
4116ab9f KH |
105 | /* File name of user's init file. */ |
106 | Lisp_Object Vuser_init_file; | |
107 | ||
ae321d28 RS |
108 | /* This is the user-visible association list that maps features to |
109 | lists of defs in their load files. */ | |
110 | Lisp_Object Vload_history; | |
111 | ||
20ea2964 | 112 | /* This is used to build the load history. */ |
ae321d28 RS |
113 | Lisp_Object Vcurrent_load_list; |
114 | ||
4b104c41 RS |
115 | /* List of files that were preloaded. */ |
116 | Lisp_Object Vpreloaded_file_list; | |
117 | ||
20ea2964 RS |
118 | /* Name of file actually being read by `load'. */ |
119 | Lisp_Object Vload_file_name; | |
120 | ||
84a15045 RS |
121 | /* Function to use for reading, in `load' and friends. */ |
122 | Lisp_Object Vload_read_function; | |
123 | ||
4ad679f9 EN |
124 | /* The association list of objects read with the #n=object form. |
125 | Each member of the list has the form (n . object), and is used to | |
126 | look up the object for the corresponding #n# construct. | |
127 | It must be set to nil before all top-level calls to read0. */ | |
128 | Lisp_Object read_objects; | |
129 | ||
b2a30870 RS |
130 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
131 | static int load_force_doc_strings; | |
132 | ||
94e554db RS |
133 | /* Nonzero means read should convert strings to unibyte. */ |
134 | static int load_convert_to_unibyte; | |
135 | ||
9b33a603 | 136 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
137 | compiled) instead of readevalloop. */ |
138 | Lisp_Object Vload_source_file_function; | |
139 | ||
1ffcc3b1 DL |
140 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
141 | Lisp_Object Vbyte_boolean_vars; | |
142 | ||
abb13b09 CW |
143 | /* Whether or not to add a `read-positions' property to symbols |
144 | read. */ | |
145 | Lisp_Object Vread_with_symbol_positions; | |
146 | ||
147 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
148 | Lisp_Object Vread_symbol_positions_list; | |
149 | ||
d2c6be7f RS |
150 | /* List of descriptors now open for Fload. */ |
151 | static Lisp_Object load_descriptor_list; | |
152 | ||
b2a30870 | 153 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
154 | static FILE *instream; |
155 | ||
156 | /* When nonzero, read conses in pure space */ | |
157 | static int read_pure; | |
158 | ||
b2a30870 | 159 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 160 | static int read_from_string_index; |
bed23cb2 | 161 | static int read_from_string_index_byte; |
078e7b4a | 162 | static int read_from_string_limit; |
17634846 | 163 | |
6f7f43d5 RS |
164 | /* Number of bytes left to read in the buffer character |
165 | that `readchar' has already advanced over. */ | |
166 | static int readchar_backlog; | |
abb13b09 CW |
167 | /* Number of characters read in the current call to Fread or |
168 | Fread_from_string. */ | |
169 | static int readchar_count; | |
6f7f43d5 | 170 | |
c15cfd1f | 171 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
172 | static char *saved_doc_string; |
173 | /* Length of buffer allocated in saved_doc_string. */ | |
174 | static int saved_doc_string_size; | |
175 | /* Length of actual data in saved_doc_string. */ | |
176 | static int saved_doc_string_length; | |
177 | /* This is the file position that string came from. */ | |
68c45bf0 | 178 | static file_offset saved_doc_string_position; |
b2a30870 | 179 | |
c15cfd1f RS |
180 | /* This contains the previous string skipped with #@. |
181 | We copy it from saved_doc_string when a new string | |
182 | is put in saved_doc_string. */ | |
183 | static char *prev_saved_doc_string; | |
184 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
185 | static int prev_saved_doc_string_size; | |
186 | /* Length of actual data in prev_saved_doc_string. */ | |
187 | static int prev_saved_doc_string_length; | |
188 | /* This is the file position that string came from. */ | |
68c45bf0 | 189 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 190 | |
17634846 RS |
191 | /* Nonzero means inside a new-style backquote |
192 | with no surrounding parentheses. | |
193 | Fread initializes this to zero, so we need not specbind it | |
194 | or worry about what happens to it when there is an error. */ | |
195 | static int new_backquote_flag; | |
1d064697 | 196 | static Lisp_Object Vold_style_backquotes, Qold_style_backquotes; |
7ee3bd7b GM |
197 | |
198 | /* A list of file names for files being loaded in Fload. Used to | |
199 | check for recursive loads. */ | |
200 | ||
9942fa0c | 201 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 202 | |
550a625e GM |
203 | /* Non-zero means load dangerous compiled Lisp files. */ |
204 | ||
205 | int load_dangerous_libraries; | |
206 | ||
207 | /* A regular expression used to detect files compiled with Emacs. */ | |
208 | ||
209 | static Lisp_Object Vbytecomp_version_regexp; | |
210 | ||
a742d646 | 211 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 212 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 213 | Lisp_Object (*) (), int, |
4c03c46d | 214 | Lisp_Object, Lisp_Object, |
550a625e GM |
215 | Lisp_Object, Lisp_Object)); |
216 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
217 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
218 | ||
336d4a9c | 219 | static void invalid_syntax P_ ((const char *, int)) NO_RETURN; |
2381d38d | 220 | static void end_of_file_error P_ (()) NO_RETURN; |
336d4a9c | 221 | |
078e7b4a JB |
222 | \f |
223 | /* Handle unreading and rereading of characters. | |
224 | Write READCHAR to read a character, | |
fe0e03f3 KH |
225 | UNREAD(c) to unread c to be read again. |
226 | ||
abb13b09 CW |
227 | The READCHAR and UNREAD macros are meant for reading/unreading a |
228 | byte code; they do not handle multibyte characters. The caller | |
229 | should manage them if necessary. | |
177c0ea7 | 230 | |
abb13b09 CW |
231 | [ Actually that seems to be a lie; READCHAR will definitely read |
232 | multibyte characters from buffer sources, at least. Is the | |
233 | comment just out of date? | |
234 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 235 | */ |
078e7b4a JB |
236 | |
237 | #define READCHAR readchar (readcharfun) | |
238 | #define UNREAD(c) unreadchar (readcharfun, c) | |
239 | ||
240 | static int | |
241 | readchar (readcharfun) | |
242 | Lisp_Object readcharfun; | |
243 | { | |
244 | Lisp_Object tem; | |
95384e1e | 245 | register int c; |
078e7b4a | 246 | |
abb13b09 | 247 | readchar_count++; |
177c0ea7 | 248 | |
cfff016d | 249 | if (BUFFERP (readcharfun)) |
078e7b4a | 250 | { |
bed23cb2 | 251 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 252 | |
bed23cb2 RS |
253 | int pt_byte = BUF_PT_BYTE (inbuffer); |
254 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 255 | |
00a9a935 RS |
256 | if (readchar_backlog > 0) |
257 | /* We get the address of the byte just passed, | |
258 | which is the last byte of the character. | |
259 | The other bytes in this character are consecutive with it, | |
260 | because the gap can't be in the middle of a character. */ | |
261 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
262 | - --readchar_backlog); | |
263 | ||
bed23cb2 RS |
264 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
265 | return -1; | |
078e7b4a | 266 | |
00a9a935 RS |
267 | readchar_backlog = -1; |
268 | ||
bed23cb2 RS |
269 | if (! NILP (inbuffer->enable_multibyte_characters)) |
270 | { | |
00a9a935 | 271 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
272 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
273 | BUF_INC_POS (inbuffer, pt_byte); | |
274 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
275 | } | |
276 | else | |
277 | { | |
278 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
279 | pt_byte++; | |
6f7f43d5 | 280 | } |
bed23cb2 | 281 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 282 | |
bed23cb2 | 283 | return c; |
078e7b4a | 284 | } |
cfff016d | 285 | if (MARKERP (readcharfun)) |
078e7b4a | 286 | { |
bed23cb2 | 287 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 288 | |
bed23cb2 RS |
289 | int bytepos = marker_byte_position (readcharfun); |
290 | int orig_bytepos = bytepos; | |
6f7f43d5 | 291 | |
00a9a935 RS |
292 | if (readchar_backlog > 0) |
293 | /* We get the address of the byte just passed, | |
294 | which is the last byte of the character. | |
295 | The other bytes in this character are consecutive with it, | |
296 | because the gap can't be in the middle of a character. */ | |
297 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
298 | - --readchar_backlog); | |
299 | ||
bed23cb2 RS |
300 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
301 | return -1; | |
6f7f43d5 | 302 | |
00a9a935 RS |
303 | readchar_backlog = -1; |
304 | ||
bed23cb2 RS |
305 | if (! NILP (inbuffer->enable_multibyte_characters)) |
306 | { | |
00a9a935 | 307 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
308 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
309 | BUF_INC_POS (inbuffer, bytepos); | |
310 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
311 | } | |
312 | else | |
313 | { | |
314 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
315 | bytepos++; | |
6f7f43d5 RS |
316 | } |
317 | ||
bed23cb2 RS |
318 | XMARKER (readcharfun)->bytepos = bytepos; |
319 | XMARKER (readcharfun)->charpos++; | |
320 | ||
321 | return c; | |
078e7b4a | 322 | } |
ad0153e4 RS |
323 | |
324 | if (EQ (readcharfun, Qlambda)) | |
325 | return read_bytecode_char (0); | |
326 | ||
078e7b4a | 327 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 328 | { |
66cd0949 | 329 | BLOCK_INPUT; |
2c1b5dbe KH |
330 | c = getc (instream); |
331 | #ifdef EINTR | |
332 | /* Interrupted reads have been observed while reading over the network */ | |
333 | while (c == EOF && ferror (instream) && errno == EINTR) | |
334 | { | |
cd83514a | 335 | UNBLOCK_INPUT; |
495bf630 | 336 | QUIT; |
66cd0949 | 337 | BLOCK_INPUT; |
cd83514a | 338 | clearerr (instream); |
2c1b5dbe KH |
339 | c = getc (instream); |
340 | } | |
341 | #endif | |
cd83514a | 342 | UNBLOCK_INPUT; |
2c1b5dbe KH |
343 | return c; |
344 | } | |
078e7b4a | 345 | |
cfff016d | 346 | if (STRINGP (readcharfun)) |
078e7b4a | 347 | { |
bed23cb2 | 348 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 349 | c = -1; |
f0354c03 | 350 | else |
bed23cb2 RS |
351 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
352 | read_from_string_index, | |
353 | read_from_string_index_byte); | |
6f7f43d5 | 354 | |
078e7b4a JB |
355 | return c; |
356 | } | |
357 | ||
358 | tem = call0 (readcharfun); | |
359 | ||
265a9e55 | 360 | if (NILP (tem)) |
078e7b4a JB |
361 | return -1; |
362 | return XINT (tem); | |
363 | } | |
364 | ||
365 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
366 | If the stream is a user function, call it with the char as argument. */ | |
367 | ||
368 | static void | |
369 | unreadchar (readcharfun, c) | |
370 | Lisp_Object readcharfun; | |
371 | int c; | |
372 | { | |
abb13b09 | 373 | readchar_count--; |
92fddec9 KH |
374 | if (c == -1) |
375 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
376 | since readchar didn't advance it when we read it. */ | |
377 | ; | |
cfff016d | 378 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 379 | { |
bed23cb2 RS |
380 | struct buffer *b = XBUFFER (readcharfun); |
381 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 382 | |
00a9a935 RS |
383 | if (readchar_backlog >= 0) |
384 | readchar_backlog++; | |
bed23cb2 | 385 | else |
00a9a935 RS |
386 | { |
387 | BUF_PT (b)--; | |
388 | if (! NILP (b->enable_multibyte_characters)) | |
389 | BUF_DEC_POS (b, bytepos); | |
390 | else | |
391 | bytepos--; | |
d7760ca9 | 392 | |
00a9a935 RS |
393 | BUF_PT_BYTE (b) = bytepos; |
394 | } | |
d7760ca9 | 395 | } |
cfff016d | 396 | else if (MARKERP (readcharfun)) |
d7760ca9 | 397 | { |
bed23cb2 RS |
398 | struct buffer *b = XMARKER (readcharfun)->buffer; |
399 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 400 | |
00a9a935 RS |
401 | if (readchar_backlog >= 0) |
402 | readchar_backlog++; | |
bed23cb2 | 403 | else |
00a9a935 RS |
404 | { |
405 | XMARKER (readcharfun)->charpos--; | |
406 | if (! NILP (b->enable_multibyte_characters)) | |
407 | BUF_DEC_POS (b, bytepos); | |
408 | else | |
409 | bytepos--; | |
d7760ca9 | 410 | |
00a9a935 RS |
411 | XMARKER (readcharfun)->bytepos = bytepos; |
412 | } | |
d7760ca9 | 413 | } |
cfff016d | 414 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
415 | { |
416 | read_from_string_index--; | |
417 | read_from_string_index_byte | |
418 | = string_char_to_byte (readcharfun, read_from_string_index); | |
419 | } | |
ad0153e4 RS |
420 | else if (EQ (readcharfun, Qlambda)) |
421 | read_bytecode_char (1); | |
078e7b4a | 422 | else if (EQ (readcharfun, Qget_file_char)) |
66cd0949 YM |
423 | { |
424 | BLOCK_INPUT; | |
425 | ungetc (c, instream); | |
426 | UNBLOCK_INPUT; | |
427 | } | |
078e7b4a JB |
428 | else |
429 | call1 (readcharfun, make_number (c)); | |
430 | } | |
431 | ||
abb13b09 CW |
432 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
433 | Lisp_Object)); | |
434 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 435 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
436 | |
437 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
438 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
439 | static int read_multibyte P_ ((int, Lisp_Object)); | |
440 | ||
441 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
442 | Lisp_Object)); | |
443 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
444 | Lisp_Object)); | |
445 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 446 | |
078e7b4a | 447 | \f |
bed23cb2 | 448 | /* Get a character from the tty. */ |
078e7b4a | 449 | |
3d9b22be JB |
450 | extern Lisp_Object read_char (); |
451 | ||
f42be754 JB |
452 | /* Read input events until we get one that's acceptable for our purposes. |
453 | ||
454 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
455 | until we get a character we like, and then stuffed into | |
456 | unread_switch_frame. | |
457 | ||
458 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
459 | if the unmodified version of the symbol has a Qascii_character | |
460 | property, and use that character, if present. | |
461 | ||
462 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
463 | get isn't an ASCII character with modifiers. If it's zero but | |
464 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
465 | character. |
466 | ||
467 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
468 | if the character warrants that. |
469 | ||
470 | If SECONDS is a number, we wait that many seconds for input, and | |
471 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 472 | |
f42be754 | 473 | Lisp_Object |
bb49a192 | 474 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
50e48299 | 475 | input_method, seconds) |
bb49a192 | 476 | int no_switch_frame, ascii_required, error_nonascii, input_method; |
50e48299 | 477 | Lisp_Object seconds; |
f42be754 | 478 | { |
4332cf50 | 479 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 480 | EMACS_TIME end_time; |
153a17b7 | 481 | |
5dbf89bc | 482 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
483 | if (display_hourglass_p) |
484 | cancel_hourglass (); | |
5dbf89bc | 485 | #endif |
177c0ea7 | 486 | |
153a17b7 | 487 | delayed_switch_frame = Qnil; |
f42be754 | 488 | |
50e48299 CY |
489 | /* Compute timeout. */ |
490 | if (NUMBERP (seconds)) | |
491 | { | |
492 | EMACS_TIME wait_time; | |
493 | int sec, usec; | |
51d8b30e | 494 | double duration = extract_float (seconds); |
50e48299 CY |
495 | |
496 | sec = (int) duration; | |
497 | usec = (duration - sec) * 1000000; | |
498 | EMACS_GET_TIME (end_time); | |
499 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
500 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
501 | } | |
502 | ||
f42be754 JB |
503 | /* Read until we get an acceptable event. */ |
504 | retry: | |
50e48299 CY |
505 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
506 | NUMBERP (seconds) ? &end_time : NULL); | |
f42be754 | 507 | |
cfff016d | 508 | if (BUFFERP (val)) |
6c82d689 KH |
509 | goto retry; |
510 | ||
f42be754 | 511 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 512 | character. This is better than signaling an error just because |
f42be754 JB |
513 | the last characters were typed to a separate minibuffer frame, |
514 | for example. Eventually, some code which can deal with | |
515 | switch-frame events will read it and process it. */ | |
516 | if (no_switch_frame | |
517 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 518 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
519 | { |
520 | delayed_switch_frame = val; | |
521 | goto retry; | |
522 | } | |
523 | ||
50e48299 | 524 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
525 | { |
526 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 527 | if (SYMBOLP (val)) |
f42be754 | 528 | { |
95384e1e | 529 | Lisp_Object tem, tem1; |
f42be754 JB |
530 | tem = Fget (val, Qevent_symbol_element_mask); |
531 | if (!NILP (tem)) | |
532 | { | |
533 | tem1 = Fget (Fcar (tem), Qascii_character); | |
534 | /* Merge this symbol's modifier bits | |
535 | with the ASCII equivalent of its basic code. */ | |
536 | if (!NILP (tem1)) | |
baf69866 | 537 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
538 | } |
539 | } | |
177c0ea7 | 540 | |
f42be754 | 541 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 542 | if (!INTEGERP (val)) |
f42be754 JB |
543 | { |
544 | if (error_nonascii) | |
545 | { | |
1ec84625 | 546 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
547 | error ("Non-character input-event"); |
548 | } | |
549 | else | |
550 | goto retry; | |
551 | } | |
552 | } | |
553 | ||
554 | if (! NILP (delayed_switch_frame)) | |
555 | unread_switch_frame = delayed_switch_frame; | |
556 | ||
67868d27 PJ |
557 | #if 0 |
558 | ||
5dbf89bc | 559 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
560 | if (display_hourglass_p) |
561 | start_hourglass (); | |
5dbf89bc | 562 | #endif |
67868d27 PJ |
563 | |
564 | #endif | |
565 | ||
f42be754 | 566 | return val; |
f42be754 JB |
567 | } |
568 | ||
50e48299 | 569 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
570 | doc: /* Read a character from the command input (keyboard or macro). |
571 | It is returned as a number. | |
572 | If the user generates an event which is not a character (i.e. a mouse | |
573 | click or function key event), `read-char' signals an error. As an | |
574 | exception, switch-frame events are put off until non-ASCII events can | |
575 | be read. | |
576 | If you want to read non-character events, or ignore them, call | |
577 | `read-event' or `read-char-exclusive' instead. | |
578 | ||
579 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
580 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
581 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
582 | is used for reading a character. |
583 | If the optional argument SECONDS is non-nil, it should be a number | |
584 | specifying the maximum number of seconds to wait for input. If no | |
585 | input arrives in that time, return nil. SECONDS may be a | |
586 | floating-point value. */) | |
587 | (prompt, inherit_input_method, seconds) | |
588 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 589 | { |
bb49a192 RS |
590 | if (! NILP (prompt)) |
591 | message_with_string ("%s", prompt, 0); | |
50e48299 | 592 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
593 | } |
594 | ||
50e48299 | 595 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
596 | doc: /* Read an event object from the input stream. |
597 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
598 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
599 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
600 | is used for reading a character. |
601 | If the optional argument SECONDS is non-nil, it should be a number | |
602 | specifying the maximum number of seconds to wait for input. If no | |
603 | input arrives in that time, return nil. SECONDS may be a | |
604 | floating-point value. */) | |
605 | (prompt, inherit_input_method, seconds) | |
606 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 607 | { |
bb49a192 RS |
608 | if (! NILP (prompt)) |
609 | message_with_string ("%s", prompt, 0); | |
50e48299 | 610 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
611 | } |
612 | ||
50e48299 | 613 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
614 | doc: /* Read a character from the command input (keyboard or macro). |
615 | It is returned as a number. Non-character events are ignored. | |
616 | ||
617 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
618 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
619 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
620 | is used for reading a character. |
621 | If the optional argument SECONDS is non-nil, it should be a number | |
622 | specifying the maximum number of seconds to wait for input. If no | |
623 | input arrives in that time, return nil. SECONDS may be a | |
624 | floating-point value. */) | |
625 | (prompt, inherit_input_method, seconds) | |
626 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 627 | { |
bb49a192 RS |
628 | if (! NILP (prompt)) |
629 | message_with_string ("%s", prompt, 0); | |
50e48299 | 630 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a | 631 | } |
078e7b4a JB |
632 | |
633 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
634 | doc: /* Don't use this yourself. */) |
635 | () | |
078e7b4a JB |
636 | { |
637 | register Lisp_Object val; | |
66cd0949 | 638 | BLOCK_INPUT; |
1805de4f | 639 | XSETINT (val, getc (instream)); |
66cd0949 | 640 | UNBLOCK_INPUT; |
078e7b4a JB |
641 | return val; |
642 | } | |
da84f340 GM |
643 | |
644 | ||
550a625e | 645 | \f |
06b8b8bb | 646 | /* Value is non-zero if the file associated with file descriptor FD |
da84f340 GM |
647 | is a compiled Lisp file that's safe to load. Only files compiled |
648 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
649 | to a crash in Fbyte_code because of an incompatible change in the | |
650 | byte compiler. */ | |
651 | ||
652 | static int | |
653 | safe_to_load_p (fd) | |
654 | int fd; | |
655 | { | |
656 | char buf[512]; | |
657 | int nbytes, i; | |
658 | int safe_p = 1; | |
659 | ||
660 | /* Read the first few bytes from the file, and look for a line | |
661 | specifying the byte compiler version used. */ | |
662 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
663 | if (nbytes > 0) | |
664 | { | |
665 | buf[nbytes] = '\0'; | |
666 | ||
667 | /* Skip to the next newline, skipping over the initial `ELC' | |
668 | with NUL bytes following it. */ | |
669 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
670 | ; | |
671 | ||
672 | if (i < nbytes | |
673 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
674 | buf + i) < 0) | |
675 | safe_p = 0; | |
676 | } | |
677 | ||
678 | lseek (fd, 0, SEEK_SET); | |
679 | return safe_p; | |
680 | } | |
681 | ||
682 | ||
7ee3bd7b GM |
683 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
684 | after loading a file successfully. */ | |
685 | ||
686 | static Lisp_Object | |
687 | record_load_unwind (old) | |
688 | Lisp_Object old; | |
689 | { | |
690 | return Vloads_in_progress = old; | |
691 | } | |
692 | ||
164c8bfe RS |
693 | /* This handler function is used via internal_condition_case_1. */ |
694 | ||
695 | static Lisp_Object | |
696 | load_error_handler (data) | |
697 | Lisp_Object data; | |
698 | { | |
699 | return Qnil; | |
700 | } | |
7ee3bd7b | 701 | |
1d064697 SM |
702 | static Lisp_Object |
703 | load_warn_old_style_backquotes (file) | |
704 | Lisp_Object file; | |
705 | { | |
706 | if (!NILP (Vold_style_backquotes)) | |
707 | { | |
b636b4c1 | 708 | Lisp_Object args[2]; |
c30da265 | 709 | args[0] = build_string ("!! File %s uses old-style backquotes !!"); |
1d064697 SM |
710 | args[1] = file; |
711 | Fmessage (2, args); | |
712 | } | |
713 | return Qnil; | |
714 | } | |
715 | ||
971a4293 LT |
716 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
717 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
718 | required. | |
719 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
720 | () | |
721 | { | |
722 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
723 | while (CONSP (suffixes)) | |
724 | { | |
725 | Lisp_Object exts = Vload_file_rep_suffixes; | |
726 | suffix = XCAR (suffixes); | |
727 | suffixes = XCDR (suffixes); | |
728 | while (CONSP (exts)) | |
729 | { | |
730 | ext = XCAR (exts); | |
731 | exts = XCDR (exts); | |
732 | lst = Fcons (concat2 (suffix, ext), lst); | |
733 | } | |
734 | } | |
735 | return Fnreverse (lst); | |
736 | } | |
737 | ||
f0a50954 | 738 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
739 | doc: /* Execute a file of Lisp code named FILE. |
740 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 741 | then try FILE unmodified (the exact suffixes in the exact order are |
06b8b8bb | 742 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 743 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 744 | This function searches the directories in `load-path'. |
971a4293 | 745 | |
5de38842 | 746 | If optional second arg NOERROR is non-nil, |
971a4293 | 747 | report no error if FILE doesn't exist. |
5de38842 | 748 | Print messages at start and end of loading unless |
971a4293 | 749 | optional third arg NOMESSAGE is non-nil. |
5de38842 | 750 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 751 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 752 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
753 | the suffix `.elc' or `.el'; don't accept just FILE unless |
754 | it ends in one of those suffixes or includes a directory name. | |
755 | ||
756 | If this function fails to find a file, it may look for different | |
757 | representations of that file before trying another file. | |
758 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
759 | to the file name. Emacs uses this feature mainly to find compressed | |
760 | versions of files when Auto Compression mode is enabled. | |
761 | ||
762 | The exact suffixes that this function tries out, in the exact order, | |
763 | are given by the value of the variable `load-file-rep-suffixes' if | |
764 | NOSUFFIX is non-nil and by the return value of the function | |
765 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
766 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
767 | and then the former. | |
0fc213e9 RS |
768 | |
769 | Loading a file records its definitions, and its `provide' and | |
770 | `require' calls, in an element of `load-history' whose | |
771 | car is the file name loaded. See `load-history'. | |
772 | ||
971a4293 | 773 | Return t if the file exists and loads successfully. */) |
5de38842 | 774 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 775 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
776 | { |
777 | register FILE *stream; | |
778 | register int fd = -1; | |
aed13378 | 779 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
780 | struct gcpro gcpro1, gcpro2, gcpro3; |
781 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
782 | /* 1 means we printed the ".el is newer" message. */ |
783 | int newer = 0; | |
784 | /* 1 means we are loading a compiled file. */ | |
785 | int compiled = 0; | |
c2225d00 | 786 | Lisp_Object handler; |
456c67a4 | 787 | int safe_p = 1; |
229ba775 | 788 | char *fmode = "r"; |
6bb6da3e | 789 | Lisp_Object tmp[2]; |
317073d5 | 790 | #ifdef DOS_NT |
229ba775 | 791 | fmode = "rt"; |
317073d5 | 792 | #endif /* DOS_NT */ |
078e7b4a | 793 | |
b7826503 | 794 | CHECK_STRING (file); |
078e7b4a | 795 | |
c2225d00 | 796 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
797 | /* This shouldn't be necessary any more now that `openp' handles it right. |
798 | handler = Ffind_file_name_handler (file, Qload); | |
799 | if (!NILP (handler)) | |
800 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 801 | |
07a0bda3 RS |
802 | /* Do this after the handler to avoid |
803 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
804 | (Below here, we care only whether they are nil or not.) |
805 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 806 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
807 | everywhere, it accidentally stayed here. Since then, enough people |
808 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
809 | that it seemed risky to remove. */ | |
164c8bfe RS |
810 | if (! NILP (noerror)) |
811 | { | |
812 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
813 | Qt, load_error_handler); | |
814 | if (NILP (file)) | |
815 | return Qnil; | |
816 | } | |
817 | else | |
818 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 819 | |
07a0bda3 | 820 | |
078e7b4a JB |
821 | /* Avoid weird lossage with null string as arg, |
822 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 823 | if (SCHARS (file) > 0) |
078e7b4a | 824 | { |
d5db4077 | 825 | int size = SBYTES (file); |
211f7dcd | 826 | |
0fc213e9 RS |
827 | found = Qnil; |
828 | GCPRO2 (file, found); | |
211f7dcd RS |
829 | |
830 | if (! NILP (must_suffix)) | |
831 | { | |
832 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
833 | if (size > 3 | |
d5db4077 | 834 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
835 | must_suffix = Qnil; |
836 | else if (size > 4 | |
d5db4077 | 837 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
838 | must_suffix = Qnil; |
839 | /* Don't insist on adding a suffix | |
840 | if the argument includes a directory name. */ | |
841 | else if (! NILP (Ffile_name_directory (file))) | |
842 | must_suffix = Qnil; | |
843 | } | |
844 | ||
f0a50954 | 845 | fd = openp (Vload_path, file, |
e61b9b87 | 846 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
847 | : !NILP (must_suffix) ? Fget_load_suffixes () |
848 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
849 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 850 | tmp))), |
86d00812 | 851 | &found, Qnil); |
5a6e5452 | 852 | UNGCPRO; |
078e7b4a JB |
853 | } |
854 | ||
96dc0f4e | 855 | if (fd == -1) |
078e7b4a | 856 | { |
265a9e55 | 857 | if (NILP (noerror)) |
336d4a9c KS |
858 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
859 | return Qnil; | |
078e7b4a JB |
860 | } |
861 | ||
ba0d1195 | 862 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
863 | if (EQ (Qt, Vuser_init_file)) |
864 | Vuser_init_file = found; | |
865 | ||
96dc0f4e MB |
866 | /* If FD is -2, that means openp found a magic file. */ |
867 | if (fd == -2) | |
74549846 | 868 | { |
5e24a1f7 KH |
869 | if (NILP (Fequal (found, file))) |
870 | /* If FOUND is a different file name from FILE, | |
871 | find its handler even if we have already inhibited | |
872 | the `load' operation on FILE. */ | |
873 | handler = Ffind_file_name_handler (found, Qt); | |
874 | else | |
875 | handler = Ffind_file_name_handler (found, Qload); | |
876 | if (! NILP (handler)) | |
877 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
878 | } |
879 | ||
550a625e GM |
880 | /* Check if we're stuck in a recursive load cycle. |
881 | ||
882 | 2000-09-21: It's not possible to just check for the file loaded | |
883 | being a member of Vloads_in_progress. This fails because of the | |
884 | way the byte compiler currently works; `provide's are not | |
885 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
886 | leads to a certain amount of ``normal'' recursion. | |
887 | ||
888 | Also, just loading a file recursively is not always an error in | |
889 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
890 | { |
891 | int count = 0; | |
892 | Lisp_Object tem; | |
893 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
894 | if (!NILP (Fequal (found, XCAR (tem)))) | |
895 | count++; | |
896 | if (count > 3) | |
3fdf12ca EZ |
897 | { |
898 | if (fd >= 0) | |
899 | emacs_close (fd); | |
336d4a9c | 900 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); |
3fdf12ca | 901 | } |
3ba6fd9a RS |
902 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
903 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
904 | } | |
7ee3bd7b | 905 | |
6bb6da3e AM |
906 | /* Get the name for load-history. */ |
907 | hist_file_name = (! NILP (Vpurify_flag) | |
908 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
909 | tmp[1] = Ffile_name_nondirectory (found), | |
910 | tmp)) | |
911 | : found) ; | |
912 | ||
06b8b8bb | 913 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
914 | specbind (Qold_style_backquotes, Qnil); |
915 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
916 | ||
a1c89c0a | 917 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
918 | ".elc", 4)) |
919 | /* Load .elc files directly, but not when they are | |
920 | remote and have no handler! */ | |
078e7b4a | 921 | { |
96dc0f4e | 922 | if (fd != -2) |
da84f340 | 923 | { |
96dc0f4e MB |
924 | struct stat s1, s2; |
925 | int result; | |
da84f340 | 926 | |
6bb6da3e | 927 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 928 | |
96dc0f4e MB |
929 | if (!safe_to_load_p (fd)) |
930 | { | |
931 | safe_p = 0; | |
932 | if (!load_dangerous_libraries) | |
e63304b7 DL |
933 | { |
934 | if (fd >= 0) | |
935 | emacs_close (fd); | |
936 | error ("File `%s' was not compiled in Emacs", | |
937 | SDATA (found)); | |
938 | } | |
96dc0f4e MB |
939 | else if (!NILP (nomessage)) |
940 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
941 | } | |
04fc68e7 | 942 | |
96dc0f4e MB |
943 | compiled = 1; |
944 | ||
eb191db2 EZ |
945 | efound = ENCODE_FILE (found); |
946 | ||
26fbf20b | 947 | #ifdef DOS_NT |
96dc0f4e | 948 | fmode = "rb"; |
26fbf20b | 949 | #endif /* DOS_NT */ |
d5db4077 | 950 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 951 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 952 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 953 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 954 | |
96dc0f4e MB |
955 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
956 | { | |
957 | /* Make the progress messages mention that source is newer. */ | |
958 | newer = 1; | |
04fc68e7 | 959 | |
96dc0f4e | 960 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
961 | if (!NILP (nomessage)) |
962 | { | |
0fc213e9 RS |
963 | Lisp_Object msg_file; |
964 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 965 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 966 | msg_file, 1); |
714d8c39 | 967 | } |
96dc0f4e | 968 | } |
0fc213e9 | 969 | UNGCPRO; |
51ac6f83 | 970 | } |
078e7b4a | 971 | } |
fe0e03f3 KH |
972 | else |
973 | { | |
974 | /* We are loading a source file (*.el). */ | |
975 | if (!NILP (Vload_source_file_function)) | |
976 | { | |
7ee3bd7b | 977 | Lisp_Object val; |
96dc0f4e MB |
978 | |
979 | if (fd >= 0) | |
68c45bf0 | 980 | emacs_close (fd); |
6bb6da3e | 981 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b GM |
982 | NILP (noerror) ? Qnil : Qt, |
983 | NILP (nomessage) ? Qnil : Qt); | |
984 | return unbind_to (count, val); | |
fe0e03f3 KH |
985 | } |
986 | } | |
078e7b4a | 987 | |
6bb6da3e | 988 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 989 | |
229ba775 | 990 | #ifdef WINDOWSNT |
68c45bf0 | 991 | emacs_close (fd); |
eb191db2 | 992 | efound = ENCODE_FILE (found); |
d5db4077 | 993 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
994 | #else /* not WINDOWSNT */ |
995 | stream = fdopen (fd, fmode); | |
996 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
997 | if (stream == 0) |
998 | { | |
68c45bf0 | 999 | emacs_close (fd); |
d5db4077 | 1000 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1001 | } |
1002 | ||
4b104c41 RS |
1003 | if (! NILP (Vpurify_flag)) |
1004 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
1005 | ||
04fc68e7 RS |
1006 | if (NILP (nomessage)) |
1007 | { | |
da84f340 GM |
1008 | if (!safe_p) |
1009 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1010 | file, 1); | |
1011 | else if (!compiled) | |
e28552a4 | 1012 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1013 | else if (newer) |
e28552a4 RS |
1014 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1015 | file, 1); | |
db5cae4b | 1016 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1017 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1018 | } |
078e7b4a | 1019 | |
c04d9e70 | 1020 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1021 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1022 | specbind (Qload_file_name, found); |
74549846 | 1023 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1024 | load_descriptor_list |
1025 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 1026 | load_in_progress++; |
6bb6da3e | 1027 | readevalloop (Qget_file_char, stream, hist_file_name, |
0fc213e9 | 1028 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
078e7b4a JB |
1029 | unbind_to (count, Qnil); |
1030 | ||
6bb6da3e AM |
1031 | /* Run any eval-after-load forms for this file */ |
1032 | if (NILP (Vpurify_flag) | |
1033 | && (!NILP (Ffboundp (Qdo_after_load_evaluation)))) | |
1034 | call1 (Qdo_after_load_evaluation, hist_file_name) ; | |
1035 | ||
078e7b4a JB |
1036 | UNGCPRO; |
1037 | ||
b2a30870 RS |
1038 | if (saved_doc_string) |
1039 | free (saved_doc_string); | |
1040 | saved_doc_string = 0; | |
1041 | saved_doc_string_size = 0; | |
1042 | ||
c15cfd1f | 1043 | if (prev_saved_doc_string) |
3cb65b0e | 1044 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1045 | prev_saved_doc_string = 0; |
1046 | prev_saved_doc_string_size = 0; | |
1047 | ||
265a9e55 | 1048 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 1049 | { |
da84f340 GM |
1050 | if (!safe_p) |
1051 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1052 | file, 1); | |
1053 | else if (!compiled) | |
e28552a4 | 1054 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1055 | else if (newer) |
e28552a4 RS |
1056 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1057 | file, 1); | |
db5cae4b | 1058 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1059 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1060 | } |
7ee3bd7b | 1061 | |
11810d78 SM |
1062 | if (!NILP (Fequal (build_string ("obsolete"), |
1063 | Ffile_name_nondirectory | |
1064 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
1065 | message_with_string ("Package %s is obsolete", file, 1); | |
1066 | ||
078e7b4a JB |
1067 | return Qt; |
1068 | } | |
1069 | ||
1070 | static Lisp_Object | |
ebfe97a2 KS |
1071 | load_unwind (arg) /* used as unwind-protect function in load */ |
1072 | Lisp_Object arg; | |
078e7b4a | 1073 | { |
ebfe97a2 KS |
1074 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1075 | if (stream != NULL) | |
66cd0949 YM |
1076 | { |
1077 | BLOCK_INPUT; | |
1078 | fclose (stream); | |
1079 | UNBLOCK_INPUT; | |
1080 | } | |
078e7b4a JB |
1081 | if (--load_in_progress < 0) load_in_progress = 0; |
1082 | return Qnil; | |
1083 | } | |
1084 | ||
d2c6be7f RS |
1085 | static Lisp_Object |
1086 | load_descriptor_unwind (oldlist) | |
1087 | Lisp_Object oldlist; | |
1088 | { | |
1089 | load_descriptor_list = oldlist; | |
838abf56 | 1090 | return Qnil; |
d2c6be7f RS |
1091 | } |
1092 | ||
1093 | /* Close all descriptors in use for Floads. | |
1094 | This is used when starting a subprocess. */ | |
1095 | ||
1096 | void | |
1097 | close_load_descs () | |
1098 | { | |
f3849f25 | 1099 | #ifndef WINDOWSNT |
d2c6be7f | 1100 | Lisp_Object tail; |
c1d497be | 1101 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 1102 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1103 | #endif |
d2c6be7f | 1104 | } |
078e7b4a JB |
1105 | \f |
1106 | static int | |
1107 | complete_filename_p (pathname) | |
1108 | Lisp_Object pathname; | |
1109 | { | |
4b2dd274 | 1110 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1111 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1112 | || (SCHARS (pathname) > 2 |
317073d5 | 1113 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1114 | #ifdef ALTOS |
1115 | || *s == '@' | |
1116 | #endif | |
1117 | #ifdef VMS | |
1118 | || index (s, ':') | |
1119 | #endif /* VMS */ | |
1120 | ); | |
1121 | } | |
1122 | ||
86d00812 SM |
1123 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1124 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1125 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1126 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1127 | file name when searching. | |
1128 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1129 | PREDICATE can also be an integer to pass to the access(2) function, | |
1130 | in which case file-name-handlers are ignored. */) | |
1131 | (filename, path, suffixes, predicate) | |
1132 | Lisp_Object filename, path, suffixes, predicate; | |
1133 | { | |
1134 | Lisp_Object file; | |
1135 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1136 | if (NILP (predicate) && fd > 0) | |
1137 | close (fd); | |
1138 | return file; | |
1139 | } | |
1140 | ||
1141 | ||
078e7b4a JB |
1142 | /* Search for a file whose name is STR, looking in directories |
1143 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1144 | On success, returns a file descriptor. On failure, returns -1. |
1145 | ||
e61b9b87 | 1146 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1147 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1148 | |
86d00812 SM |
1149 | PREDICATE non-nil means don't open the files, |
1150 | just look for one that satisfies the predicate. In this case, | |
1151 | returns 1 on success. The predicate can be a lisp function or | |
1152 | an integer to pass to `access' (in which case file-name-handlers | |
1153 | are ignored). | |
078e7b4a JB |
1154 | |
1155 | If STOREPTR is nonzero, it points to a slot where the name of | |
1156 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1157 | nil is stored there on failure. |
1158 | ||
96dc0f4e | 1159 | If the file we find is remote, return -2 |
86d00812 | 1160 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1161 | |
1162 | int | |
86d00812 | 1163 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1164 | Lisp_Object path, str; |
e61b9b87 | 1165 | Lisp_Object suffixes; |
078e7b4a | 1166 | Lisp_Object *storeptr; |
86d00812 | 1167 | Lisp_Object predicate; |
078e7b4a JB |
1168 | { |
1169 | register int fd; | |
1170 | int fn_size = 100; | |
1171 | char buf[100]; | |
1172 | register char *fn = buf; | |
1173 | int absolute = 0; | |
1174 | int want_size; | |
74549846 | 1175 | Lisp_Object filename; |
078e7b4a | 1176 | struct stat st; |
eb191db2 EZ |
1177 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1178 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1179 | int max_suffix_len = 0; |
1180 | ||
6f8eafd1 SM |
1181 | CHECK_STRING (str); |
1182 | ||
e61b9b87 SM |
1183 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1184 | { | |
f5df591a | 1185 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1186 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1187 | SBYTES (XCAR (tail))); |
e61b9b87 | 1188 | } |
078e7b4a | 1189 | |
8b9d426a | 1190 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1191 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1192 | ||
078e7b4a JB |
1193 | if (storeptr) |
1194 | *storeptr = Qnil; | |
1195 | ||
1196 | if (complete_filename_p (str)) | |
1197 | absolute = 1; | |
1198 | ||
e61b9b87 | 1199 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1200 | { |
e61b9b87 | 1201 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1202 | if (!complete_filename_p (filename)) |
1203 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1204 | /* Of course, this could conceivably lose if luser sets | |
1205 | default-directory to be something non-absolute... */ | |
1206 | { | |
1207 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1208 | if (!complete_filename_p (filename)) | |
1209 | /* Give up on this path element! */ | |
1210 | continue; | |
1211 | } | |
1212 | ||
1213 | /* Calculate maximum size of any filename made from | |
1214 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1215 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1216 | if (fn_size < want_size) |
1217 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1218 | ||
078e7b4a | 1219 | /* Loop over suffixes. */ |
971a4293 | 1220 | for (tail = NILP (suffixes) ? Fcons (build_string (""), Qnil) : suffixes; |
e61b9b87 | 1221 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1222 | { |
d5db4077 | 1223 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1224 | Lisp_Object handler; |
eb191db2 | 1225 | int exists; |
078e7b4a | 1226 | |
c49afcd7 RS |
1227 | /* Concatenate path element/specified name with the suffix. |
1228 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1229 | if (SCHARS (filename) > 2 |
1230 | && SREF (filename, 0) == '/' | |
1231 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1232 | { |
d5db4077 KR |
1233 | strncpy (fn, SDATA (filename) + 2, |
1234 | SBYTES (filename) - 2); | |
1235 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1236 | } |
1237 | else | |
1238 | { | |
d5db4077 KR |
1239 | strncpy (fn, SDATA (filename), |
1240 | SBYTES (filename)); | |
1241 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1242 | } |
1243 | ||
078e7b4a | 1244 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1245 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1246 | |
74549846 | 1247 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1248 | /* We used to only check for handlers on non-absolute file names: |
1249 | if (absolute) | |
1250 | handler = Qnil; | |
1251 | else | |
1252 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1253 | It's not clear why that was the case and it breaks things like | |
1254 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1255 | string = build_string (fn); |
4773b8ca | 1256 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1257 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1258 | { | |
1259 | if (NILP (predicate)) | |
1260 | exists = !NILP (Ffile_readable_p (string)); | |
1261 | else | |
1262 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1263 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1264 | exists = 0; |
1265 | ||
1266 | if (exists) | |
078e7b4a JB |
1267 | { |
1268 | /* We succeeded; return this descriptor and filename. */ | |
1269 | if (storeptr) | |
eb191db2 | 1270 | *storeptr = string; |
5ef2a3c0 | 1271 | UNGCPRO; |
96dc0f4e | 1272 | return -2; |
74549846 RS |
1273 | } |
1274 | } | |
1275 | else | |
1276 | { | |
4b2dd274 | 1277 | const char *pfn; |
eb191db2 EZ |
1278 | |
1279 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1280 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1281 | exists = (stat (pfn, &st) >= 0 |
1282 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1283 | if (exists) |
1284 | { | |
1285 | /* Check that we can access or open it. */ | |
86d00812 SM |
1286 | if (NATNUMP (predicate)) |
1287 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1288 | else |
eb191db2 | 1289 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1290 | |
1291 | if (fd >= 0) | |
1292 | { | |
1293 | /* We succeeded; return this descriptor and filename. */ | |
1294 | if (storeptr) | |
eb191db2 | 1295 | *storeptr = string; |
74549846 RS |
1296 | UNGCPRO; |
1297 | return fd; | |
1298 | } | |
078e7b4a JB |
1299 | } |
1300 | } | |
078e7b4a | 1301 | } |
5a6e5452 | 1302 | if (absolute) |
5ef2a3c0 | 1303 | break; |
078e7b4a JB |
1304 | } |
1305 | ||
5ef2a3c0 KH |
1306 | UNGCPRO; |
1307 | return -1; | |
078e7b4a JB |
1308 | } |
1309 | ||
1310 | \f | |
ae321d28 RS |
1311 | /* Merge the list we've accumulated of globals from the current input source |
1312 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1313 | the source has an associated file name or not. |
1314 | ||
1315 | FILENAME is the file name that we are loading from. | |
1316 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1317 | |
1318 | static void | |
b502a9a1 RS |
1319 | build_load_history (filename, entire) |
1320 | Lisp_Object filename; | |
1321 | int entire; | |
ae321d28 RS |
1322 | { |
1323 | register Lisp_Object tail, prev, newelt; | |
1324 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1325 | register int foundit = 0; |
ae321d28 RS |
1326 | |
1327 | tail = Vload_history; | |
1328 | prev = Qnil; | |
b502a9a1 | 1329 | |
86d00812 | 1330 | while (CONSP (tail)) |
ae321d28 | 1331 | { |
86d00812 | 1332 | tem = XCAR (tail); |
ae321d28 RS |
1333 | |
1334 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1335 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1336 | { |
1337 | foundit = 1; | |
1338 | ||
b502a9a1 RS |
1339 | /* If we're loading the entire file, remove old data. */ |
1340 | if (entire) | |
86d00812 | 1341 | { |
ae321d28 | 1342 | if (NILP (prev)) |
86d00812 | 1343 | Vload_history = XCDR (tail); |
ae321d28 | 1344 | else |
86d00812 | 1345 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1346 | } |
1347 | ||
1348 | /* Otherwise, cons on new symbols that are not already members. */ | |
1349 | else | |
1350 | { | |
1351 | tem2 = Vcurrent_load_list; | |
1352 | ||
1353 | while (CONSP (tem2)) | |
1354 | { | |
86d00812 | 1355 | newelt = XCAR (tem2); |
ae321d28 | 1356 | |
d642e4f9 | 1357 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1358 | Fsetcar (tail, Fcons (XCAR (tem), |
1359 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1360 | |
86d00812 | 1361 | tem2 = XCDR (tem2); |
ae321d28 RS |
1362 | QUIT; |
1363 | } | |
1364 | } | |
1365 | } | |
1366 | else | |
1367 | prev = tail; | |
86d00812 | 1368 | tail = XCDR (tail); |
ae321d28 RS |
1369 | QUIT; |
1370 | } | |
1371 | ||
b502a9a1 RS |
1372 | /* If we're loading an entire file, cons the new assoc onto the |
1373 | front of load-history, the most-recently-loaded position. Also | |
1374 | do this if we didn't find an existing member for the file. */ | |
1375 | if (entire || !foundit) | |
8a1f1537 RS |
1376 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1377 | Vload_history); | |
ae321d28 RS |
1378 | } |
1379 | ||
078e7b4a | 1380 | Lisp_Object |
232ccf27 DL |
1381 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1382 | Lisp_Object junk; | |
078e7b4a JB |
1383 | { |
1384 | read_pure = 0; | |
1385 | return Qnil; | |
1386 | } | |
1387 | ||
94e554db RS |
1388 | static Lisp_Object |
1389 | readevalloop_1 (old) | |
1390 | Lisp_Object old; | |
1391 | { | |
1392 | load_convert_to_unibyte = ! NILP (old); | |
1393 | return Qnil; | |
1394 | } | |
1395 | ||
9c97398c GM |
1396 | /* Signal an `end-of-file' error, if possible with file name |
1397 | information. */ | |
1398 | ||
1399 | static void | |
1400 | end_of_file_error () | |
1401 | { | |
9c97398c | 1402 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1403 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1404 | |
336d4a9c | 1405 | xsignal0 (Qend_of_file); |
9c97398c GM |
1406 | } |
1407 | ||
94e554db | 1408 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1409 | for this invocation. |
4c03c46d | 1410 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1411 | |
1412 | START, END specify region to read in current buffer (from eval-region). | |
1413 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1414 | |
078e7b4a | 1415 | static void |
4c03c46d KS |
1416 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1417 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1418 | Lisp_Object readcharfun; |
ae321d28 RS |
1419 | FILE *stream; |
1420 | Lisp_Object sourcename; | |
078e7b4a JB |
1421 | Lisp_Object (*evalfun) (); |
1422 | int printflag; | |
976350af | 1423 | Lisp_Object unibyte, readfun; |
4c03c46d | 1424 | Lisp_Object start, end; |
078e7b4a JB |
1425 | { |
1426 | register int c; | |
1427 | register Lisp_Object val; | |
aed13378 | 1428 | int count = SPECPDL_INDEX (); |
0a37f512 | 1429 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1430 | struct buffer *b = 0; |
f38952fe | 1431 | int continue_reading_p; |
d11db2c8 RS |
1432 | /* Nonzero if reading an entire buffer. */ |
1433 | int whole_buffer = 0; | |
1434 | /* 1 on the first time around. */ | |
1435 | int first_sexp = 1; | |
1436 | ||
1437 | if (MARKERP (readcharfun)) | |
1438 | { | |
1439 | if (NILP (start)) | |
8878319c | 1440 | start = readcharfun; |
d11db2c8 | 1441 | } |
49cf7ff4 RS |
1442 | |
1443 | if (BUFFERP (readcharfun)) | |
1444 | b = XBUFFER (readcharfun); | |
1445 | else if (MARKERP (readcharfun)) | |
1446 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1447 | |
1ed7b9ae RS |
1448 | /* We assume START is nil when input is not from a buffer. */ |
1449 | if (! NILP (start) && !b) | |
1450 | abort (); | |
1451 | ||
0a37f512 | 1452 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1453 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1454 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1455 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1456 | |
00a9a935 | 1457 | readchar_backlog = -1; |
6f7f43d5 | 1458 | |
0a37f512 | 1459 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1460 | |
6bb6da3e AM |
1461 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1462 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1463 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1464 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1465 | sourcename = call1 (Qfile_truename, sourcename) ; |
1466 | ||
ae321d28 RS |
1467 | LOADHIST_ATTACH (sourcename); |
1468 | ||
f38952fe GM |
1469 | continue_reading_p = 1; |
1470 | while (continue_reading_p) | |
078e7b4a | 1471 | { |
4c03c46d KS |
1472 | int count1 = SPECPDL_INDEX (); |
1473 | ||
49cf7ff4 RS |
1474 | if (b != 0 && NILP (b->name)) |
1475 | error ("Reading from killed buffer"); | |
1476 | ||
4c03c46d KS |
1477 | if (!NILP (start)) |
1478 | { | |
721b7d9e RS |
1479 | /* Switch to the buffer we are reading from. */ |
1480 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1481 | set_buffer_internal (b); | |
1482 | ||
1483 | /* Save point in it. */ | |
4c03c46d | 1484 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1485 | /* Save ZV in it. */ |
4c03c46d | 1486 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1487 | /* Those get unbound after we read one expression. */ |
1488 | ||
1489 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1490 | Fgoto_char (start); |
d11db2c8 RS |
1491 | if (!NILP (end)) |
1492 | Fnarrow_to_region (make_number (BEGV), end); | |
1493 | ||
1494 | /* Just for cleanliness, convert END to a marker | |
1495 | if it is an integer. */ | |
1496 | if (INTEGERP (end)) | |
1497 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1498 | } |
1499 | ||
d11db2c8 RS |
1500 | /* On the first cycle, we can easily test here |
1501 | whether we are reading the whole buffer. */ | |
1502 | if (b && first_sexp) | |
1503 | whole_buffer = (PT == BEG && ZV == Z); | |
1504 | ||
078e7b4a | 1505 | instream = stream; |
4c03c46d | 1506 | read_next: |
078e7b4a JB |
1507 | c = READCHAR; |
1508 | if (c == ';') | |
1509 | { | |
1510 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1511 | goto read_next; |
1512 | } | |
1513 | if (c < 0) | |
1514 | { | |
1515 | unbind_to (count1, Qnil); | |
1516 | break; | |
078e7b4a | 1517 | } |
6069d957 RS |
1518 | |
1519 | /* Ignore whitespace here, so we can detect eof. */ | |
1520 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1521 | goto read_next; |
078e7b4a | 1522 | |
265a9e55 | 1523 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1524 | { |
1525 | record_unwind_protect (unreadpure, Qnil); | |
1526 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1527 | } |
1528 | else | |
1529 | { | |
1530 | UNREAD (c); | |
4ad679f9 | 1531 | read_objects = Qnil; |
f38952fe GM |
1532 | if (!NILP (readfun)) |
1533 | { | |
1534 | val = call1 (readfun, readcharfun); | |
1535 | ||
1536 | /* If READCHARFUN has set point to ZV, we should | |
1537 | stop reading, even if the form read sets point | |
1538 | to a different value when evaluated. */ | |
1539 | if (BUFFERP (readcharfun)) | |
1540 | { | |
1541 | struct buffer *b = XBUFFER (readcharfun); | |
1542 | if (BUF_PT (b) == BUF_ZV (b)) | |
1543 | continue_reading_p = 0; | |
1544 | } | |
1545 | } | |
976350af | 1546 | else if (! NILP (Vload_read_function)) |
84a15045 | 1547 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1548 | else |
abb13b09 | 1549 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1550 | } |
1551 | ||
4c03c46d KS |
1552 | if (!NILP (start) && continue_reading_p) |
1553 | start = Fpoint_marker (); | |
d11db2c8 RS |
1554 | |
1555 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1556 | unbind_to (count1, Qnil); |
1557 | ||
d11db2c8 | 1558 | /* Now eval what we just read. */ |
078e7b4a | 1559 | val = (*evalfun) (val); |
f38952fe | 1560 | |
078e7b4a JB |
1561 | if (printflag) |
1562 | { | |
1563 | Vvalues = Fcons (val, Vvalues); | |
1564 | if (EQ (Vstandard_output, Qt)) | |
1565 | Fprin1 (val, Qnil); | |
1566 | else | |
1567 | Fprint (val, Qnil); | |
1568 | } | |
d11db2c8 RS |
1569 | |
1570 | first_sexp = 0; | |
078e7b4a JB |
1571 | } |
1572 | ||
8878319c | 1573 | build_load_history (sourcename, |
d11db2c8 | 1574 | stream || whole_buffer); |
b502a9a1 | 1575 | |
ae321d28 RS |
1576 | UNGCPRO; |
1577 | ||
078e7b4a JB |
1578 | unbind_to (count, Qnil); |
1579 | } | |
1580 | ||
1076254d | 1581 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1582 | doc: /* Execute the current buffer as Lisp code. |
1583 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1584 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1585 | PRINTFLAG controls printing of output: | |
51d8b30e | 1586 | A value of nil means discard it; anything else is stream for print. |
5de38842 PJ |
1587 | |
1588 | If the optional third argument FILENAME is non-nil, | |
1589 | it specifies the file name to use for `load-history'. | |
1590 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1591 | for this invocation. | |
1592 | ||
3f9ab804 | 1593 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1594 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1595 | ||
1596 | This function preserves the position of point. */) | |
1597 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1598 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1599 | { |
aed13378 | 1600 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1601 | Lisp_Object tem, buf; |
1602 | ||
9391b698 | 1603 | if (NILP (buffer)) |
228d4b1c JA |
1604 | buf = Fcurrent_buffer (); |
1605 | else | |
9391b698 | 1606 | buf = Fget_buffer (buffer); |
dfdb645c | 1607 | if (NILP (buf)) |
13febd85 | 1608 | error ("No such buffer"); |
228d4b1c | 1609 | |
1076254d | 1610 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1611 | tem = Qsymbolp; |
1612 | else | |
1613 | tem = printflag; | |
13febd85 RS |
1614 | |
1615 | if (NILP (filename)) | |
1616 | filename = XBUFFER (buf)->filename; | |
1617 | ||
3f39f996 | 1618 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1619 | specbind (Qstandard_output, tem); |
1620 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1621 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1622 | readevalloop (buf, 0, filename, Feval, |
1623 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1624 | unbind_to (count, Qnil); |
228d4b1c JA |
1625 | |
1626 | return Qnil; | |
1627 | } | |
1628 | ||
976350af | 1629 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1630 | doc: /* Execute the region as Lisp code. |
1631 | When called from programs, expects two arguments, | |
1632 | giving starting and ending indices in the current buffer | |
1633 | of the text to be executed. | |
1634 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1635 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1636 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1637 | instead of `read' to read each expression. It gets one argument | |
1638 | which is the input stream for reading characters. | |
1639 | ||
1640 | This function does not move point. */) | |
1641 | (start, end, printflag, read_function) | |
976350af | 1642 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1643 | { |
aed13378 | 1644 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1645 | Lisp_Object tem, cbuf; |
1646 | ||
1647 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1648 | |
265a9e55 | 1649 | if (NILP (printflag)) |
078e7b4a JB |
1650 | tem = Qsymbolp; |
1651 | else | |
1652 | tem = printflag; | |
1653 | specbind (Qstandard_output, tem); | |
3f39f996 | 1654 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1655 | |
4c03c46d | 1656 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1657 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1658 | !NILP (printflag), Qnil, read_function, |
1659 | start, end); | |
078e7b4a JB |
1660 | |
1661 | return unbind_to (count, Qnil); | |
1662 | } | |
1663 | ||
078e7b4a JB |
1664 | \f |
1665 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1666 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1667 | If STREAM is nil, use the value of `standard-input' (which see). | |
1668 | STREAM or the value of `standard-input' may be: | |
1669 | a buffer (read from point and advance it) | |
1670 | a marker (read from where it points and advance it) | |
1671 | a function (call it with no arguments for each character, | |
1672 | call it with a char as argument to push a char back) | |
1673 | a string (takes text from string, starting at the beginning) | |
1674 | t (read text line using minibuffer and use it, or read from | |
1675 | standard input in batch mode). */) | |
1676 | (stream) | |
5be02dff | 1677 | Lisp_Object stream; |
078e7b4a | 1678 | { |
5be02dff KH |
1679 | if (NILP (stream)) |
1680 | stream = Vstandard_input; | |
1681 | if (EQ (stream, Qt)) | |
1682 | stream = Qread_char; | |
5be02dff | 1683 | if (EQ (stream, Qread_char)) |
078e7b4a | 1684 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1685 | |
abb13b09 | 1686 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1687 | } |
1688 | ||
1689 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1690 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1691 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1692 | START and END optionally delimit a substring of STRING from which to read; | |
1693 | they default to 0 and (length STRING) respectively. */) | |
1694 | (string, start, end) | |
078e7b4a JB |
1695 | Lisp_Object string, start, end; |
1696 | { | |
2530ceaf | 1697 | Lisp_Object ret; |
b7826503 | 1698 | CHECK_STRING (string); |
2530ceaf CW |
1699 | /* read_internal_start sets read_from_string_index. */ |
1700 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1701 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1702 | } |
078e7b4a | 1703 | |
abb13b09 CW |
1704 | /* Function to set up the global context we need in toplevel read |
1705 | calls. */ | |
1706 | static Lisp_Object | |
1707 | read_internal_start (stream, start, end) | |
1708 | Lisp_Object stream; | |
1709 | Lisp_Object start; /* Only used when stream is a string. */ | |
1710 | Lisp_Object end; /* Only used when stream is a string. */ | |
1711 | { | |
1712 | Lisp_Object retval; | |
078e7b4a | 1713 | |
abb13b09 CW |
1714 | readchar_backlog = -1; |
1715 | readchar_count = 0; | |
17634846 | 1716 | new_backquote_flag = 0; |
4ad679f9 | 1717 | read_objects = Qnil; |
abb13b09 CW |
1718 | if (EQ (Vread_with_symbol_positions, Qt) |
1719 | || EQ (Vread_with_symbol_positions, stream)) | |
1720 | Vread_symbol_positions_list = Qnil; | |
1721 | ||
1722 | if (STRINGP (stream)) | |
1723 | { | |
1724 | int startval, endval; | |
1725 | if (NILP (end)) | |
d5db4077 | 1726 | endval = SCHARS (stream); |
abb13b09 CW |
1727 | else |
1728 | { | |
1729 | CHECK_NUMBER (end); | |
1730 | endval = XINT (end); | |
d5db4077 | 1731 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1732 | args_out_of_range (stream, end); |
1733 | } | |
17634846 | 1734 | |
abb13b09 CW |
1735 | if (NILP (start)) |
1736 | startval = 0; | |
1737 | else | |
1738 | { | |
1739 | CHECK_NUMBER (start); | |
1740 | startval = XINT (start); | |
1741 | if (startval < 0 || startval > endval) | |
1742 | args_out_of_range (stream, start); | |
1743 | } | |
1744 | read_from_string_index = startval; | |
1745 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1746 | read_from_string_limit = endval; | |
1747 | } | |
177c0ea7 | 1748 | |
abb13b09 CW |
1749 | retval = read0 (stream); |
1750 | if (EQ (Vread_with_symbol_positions, Qt) | |
1751 | || EQ (Vread_with_symbol_positions, stream)) | |
1752 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1753 | return retval; | |
078e7b4a JB |
1754 | } |
1755 | \f | |
336d4a9c KS |
1756 | |
1757 | /* Signal Qinvalid_read_syntax error. | |
1758 | S is error string of length N (if > 0) */ | |
1759 | ||
1760 | static void | |
1761 | invalid_syntax (s, n) | |
1762 | const char *s; | |
1763 | int n; | |
1764 | { | |
1765 | if (!n) | |
1766 | n = strlen (s); | |
1767 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
1768 | } | |
1769 | ||
1770 | ||
6428369f KH |
1771 | /* Use this for recursive reads, in contexts where internal tokens |
1772 | are not allowed. */ | |
e28552a4 | 1773 | |
078e7b4a JB |
1774 | static Lisp_Object |
1775 | read0 (readcharfun) | |
1776 | Lisp_Object readcharfun; | |
1777 | { | |
1778 | register Lisp_Object val; | |
e28552a4 | 1779 | int c; |
078e7b4a | 1780 | |
17634846 | 1781 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
1782 | if (!c) |
1783 | return val; | |
078e7b4a | 1784 | |
336d4a9c KS |
1785 | xsignal1 (Qinvalid_read_syntax, |
1786 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
1787 | } |
1788 | \f | |
1789 | static int read_buffer_size; | |
1790 | static char *read_buffer; | |
1791 | ||
fe0e03f3 KH |
1792 | /* Read multibyte form and return it as a character. C is a first |
1793 | byte of multibyte form, and rest of them are read from | |
1794 | READCHARFUN. */ | |
6f7f43d5 | 1795 | |
fe0e03f3 KH |
1796 | static int |
1797 | read_multibyte (c, readcharfun) | |
1798 | register int c; | |
1799 | Lisp_Object readcharfun; | |
1800 | { | |
1801 | /* We need the actual character code of this multibyte | |
1802 | characters. */ | |
449fea39 | 1803 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1804 | int len = 0; |
0d5e5843 | 1805 | int bytes; |
fe0e03f3 | 1806 | |
abb13b09 CW |
1807 | if (c < 0) |
1808 | return c; | |
1809 | ||
fe0e03f3 KH |
1810 | str[len++] = c; |
1811 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1812 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1813 | { |
1814 | str[len++] = c; | |
1815 | readchar_count--; | |
1816 | } | |
fe0e03f3 | 1817 | UNREAD (c); |
0d5e5843 KH |
1818 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1819 | return STRING_CHAR (str, len); | |
1820 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1821 | but the first one, and return the first byte. */ | |
1822 | while (--len > 0) | |
1823 | UNREAD (str[len]); | |
1824 | return str[0]; | |
fe0e03f3 KH |
1825 | } |
1826 | ||
f6f79b37 RS |
1827 | /* Read a \-escape sequence, assuming we already read the `\'. |
1828 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1829 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1830 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1831 | |
078e7b4a | 1832 | static int |
f6f79b37 | 1833 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1834 | Lisp_Object readcharfun; |
e7fc914b | 1835 | int stringp; |
f6f79b37 | 1836 | int *byterep; |
078e7b4a JB |
1837 | { |
1838 | register int c = READCHAR; | |
71b169b8 EZ |
1839 | /* \u allows up to four hex digits, \U up to eight. Default to the |
1840 | behaviour for \u, and change this value in the case that \U is seen. */ | |
1841 | int unicode_hex_count = 4; | |
f6f79b37 RS |
1842 | |
1843 | *byterep = 0; | |
1844 | ||
078e7b4a JB |
1845 | switch (c) |
1846 | { | |
f3849f25 | 1847 | case -1: |
da3b886d | 1848 | end_of_file_error (); |
f3849f25 | 1849 | |
078e7b4a | 1850 | case 'a': |
265a9e55 | 1851 | return '\007'; |
078e7b4a JB |
1852 | case 'b': |
1853 | return '\b'; | |
f405a585 RS |
1854 | case 'd': |
1855 | return 0177; | |
078e7b4a JB |
1856 | case 'e': |
1857 | return 033; | |
1858 | case 'f': | |
1859 | return '\f'; | |
1860 | case 'n': | |
1861 | return '\n'; | |
1862 | case 'r': | |
1863 | return '\r'; | |
1864 | case 't': | |
1865 | return '\t'; | |
1866 | case 'v': | |
1867 | return '\v'; | |
1868 | case '\n': | |
1869 | return -1; | |
e28552a4 | 1870 | case ' ': |
e7fc914b KH |
1871 | if (stringp) |
1872 | return -1; | |
1873 | return ' '; | |
078e7b4a JB |
1874 | |
1875 | case 'M': | |
1876 | c = READCHAR; | |
1877 | if (c != '-') | |
1878 | error ("Invalid escape character syntax"); | |
1879 | c = READCHAR; | |
1880 | if (c == '\\') | |
f6f79b37 | 1881 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1882 | return c | meta_modifier; |
f405a585 RS |
1883 | |
1884 | case 'S': | |
1885 | c = READCHAR; | |
1886 | if (c != '-') | |
1887 | error ("Invalid escape character syntax"); | |
1888 | c = READCHAR; | |
1889 | if (c == '\\') | |
f6f79b37 | 1890 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1891 | return c | shift_modifier; |
1892 | ||
1893 | case 'H': | |
1894 | c = READCHAR; | |
1895 | if (c != '-') | |
1896 | error ("Invalid escape character syntax"); | |
1897 | c = READCHAR; | |
1898 | if (c == '\\') | |
f6f79b37 | 1899 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1900 | return c | hyper_modifier; |
1901 | ||
1902 | case 'A': | |
1903 | c = READCHAR; | |
1904 | if (c != '-') | |
1905 | error ("Invalid escape character syntax"); | |
1906 | c = READCHAR; | |
1907 | if (c == '\\') | |
f6f79b37 | 1908 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1909 | return c | alt_modifier; |
1910 | ||
1911 | case 's': | |
1912 | c = READCHAR; | |
010b7eac RS |
1913 | if (c != '-') |
1914 | { | |
1915 | UNREAD (c); | |
1916 | return ' '; | |
1917 | } | |
7bd279cd RS |
1918 | c = READCHAR; |
1919 | if (c == '\\') | |
f6f79b37 | 1920 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1921 | return c | super_modifier; |
078e7b4a JB |
1922 | |
1923 | case 'C': | |
1924 | c = READCHAR; | |
1925 | if (c != '-') | |
1926 | error ("Invalid escape character syntax"); | |
1927 | case '^': | |
1928 | c = READCHAR; | |
1929 | if (c == '\\') | |
f6f79b37 | 1930 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1931 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1932 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1933 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1934 | return c | ctrl_modifier; | |
f405a585 RS |
1935 | /* ASCII control chars are made from letters (both cases), |
1936 | as well as the non-letters within 0100...0137. */ | |
1937 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1938 | return (c & (037 | ~0177)); | |
1939 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1940 | return (c & (037 | ~0177)); | |
078e7b4a | 1941 | else |
7bd279cd | 1942 | return c | ctrl_modifier; |
078e7b4a JB |
1943 | |
1944 | case '0': | |
1945 | case '1': | |
1946 | case '2': | |
1947 | case '3': | |
1948 | case '4': | |
1949 | case '5': | |
1950 | case '6': | |
1951 | case '7': | |
1952 | /* An octal escape, as in ANSI C. */ | |
1953 | { | |
1954 | register int i = c - '0'; | |
1955 | register int count = 0; | |
1956 | while (++count < 3) | |
1957 | { | |
1958 | if ((c = READCHAR) >= '0' && c <= '7') | |
1959 | { | |
1960 | i *= 8; | |
1961 | i += c - '0'; | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | UNREAD (c); | |
1966 | break; | |
1967 | } | |
1968 | } | |
177c0ea7 | 1969 | |
f6f79b37 | 1970 | *byterep = 1; |
078e7b4a JB |
1971 | return i; |
1972 | } | |
1973 | ||
1974 | case 'x': | |
1975 | /* A hex escape, as in ANSI C. */ | |
1976 | { | |
1977 | int i = 0; | |
1978 | while (1) | |
1979 | { | |
1980 | c = READCHAR; | |
1981 | if (c >= '0' && c <= '9') | |
1982 | { | |
1983 | i *= 16; | |
1984 | i += c - '0'; | |
1985 | } | |
1986 | else if ((c >= 'a' && c <= 'f') | |
1987 | || (c >= 'A' && c <= 'F')) | |
1988 | { | |
1989 | i *= 16; | |
1990 | if (c >= 'a' && c <= 'f') | |
1991 | i += c - 'a' + 10; | |
1992 | else | |
1993 | i += c - 'A' + 10; | |
1994 | } | |
1995 | else | |
1996 | { | |
1997 | UNREAD (c); | |
1998 | break; | |
1999 | } | |
2000 | } | |
f6f79b37 RS |
2001 | |
2002 | *byterep = 2; | |
078e7b4a JB |
2003 | return i; |
2004 | } | |
2005 | ||
71b169b8 EZ |
2006 | case 'U': |
2007 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2008 | unicode_hex_count = 8; | |
2009 | case 'u': | |
2010 | ||
2011 | /* A Unicode escape. We only permit them in strings and characters, | |
2012 | not arbitrarily in the source code, as in some other languages. */ | |
2013 | { | |
2014 | int i = 0; | |
2015 | int count = 0; | |
2016 | Lisp_Object lisp_char; | |
2017 | struct gcpro gcpro1; | |
2018 | ||
2019 | while (++count <= unicode_hex_count) | |
2020 | { | |
2021 | c = READCHAR; | |
a3ac22e4 | 2022 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2023 | want. */ |
2024 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2025 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2026 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2027 | else | |
2028 | { | |
2029 | error ("Non-hex digit used for Unicode escape"); | |
2030 | break; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | GCPRO1 (readcharfun); | |
a3ac22e4 EZ |
2035 | lisp_char = call2 (intern ("decode-char"), intern ("ucs"), |
2036 | make_number (i)); | |
71b169b8 EZ |
2037 | UNGCPRO; |
2038 | ||
a3ac22e4 | 2039 | if (NILP (lisp_char)) |
71b169b8 | 2040 | { |
9ee96155 | 2041 | error ("Unsupported Unicode code point: U+%x", (unsigned)i); |
71b169b8 | 2042 | } |
9ee96155 EZ |
2043 | |
2044 | return XFASTINT (lisp_char); | |
71b169b8 EZ |
2045 | } |
2046 | ||
078e7b4a | 2047 | default: |
fe0e03f3 KH |
2048 | if (BASE_LEADING_CODE_P (c)) |
2049 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
2050 | return c; |
2051 | } | |
2052 | } | |
2053 | ||
bf5d1a17 GM |
2054 | /* Read an integer in radix RADIX using READCHARFUN to read |
2055 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2056 | read error is signaled . Value is the integer read. Signals an | |
2057 | error if encountering invalid read syntax or if RADIX is out of | |
2058 | range. */ | |
2059 | ||
2060 | static Lisp_Object | |
2061 | read_integer (readcharfun, radix) | |
2062 | Lisp_Object readcharfun; | |
2063 | int radix; | |
2064 | { | |
5e37dc22 GM |
2065 | int ndigits = 0, invalid_p, c, sign = 0; |
2066 | EMACS_INT number = 0; | |
bf5d1a17 GM |
2067 | |
2068 | if (radix < 2 || radix > 36) | |
2069 | invalid_p = 1; | |
2070 | else | |
2071 | { | |
2072 | number = ndigits = invalid_p = 0; | |
2073 | sign = 1; | |
2074 | ||
2075 | c = READCHAR; | |
2076 | if (c == '-') | |
2077 | { | |
2078 | c = READCHAR; | |
2079 | sign = -1; | |
2080 | } | |
2081 | else if (c == '+') | |
2082 | c = READCHAR; | |
177c0ea7 | 2083 | |
bf5d1a17 GM |
2084 | while (c >= 0) |
2085 | { | |
2086 | int digit; | |
177c0ea7 | 2087 | |
bf5d1a17 GM |
2088 | if (c >= '0' && c <= '9') |
2089 | digit = c - '0'; | |
2090 | else if (c >= 'a' && c <= 'z') | |
2091 | digit = c - 'a' + 10; | |
2092 | else if (c >= 'A' && c <= 'Z') | |
2093 | digit = c - 'A' + 10; | |
2094 | else | |
b632fa48 GM |
2095 | { |
2096 | UNREAD (c); | |
2097 | break; | |
2098 | } | |
bf5d1a17 GM |
2099 | |
2100 | if (digit < 0 || digit >= radix) | |
2101 | invalid_p = 1; | |
2102 | ||
2103 | number = radix * number + digit; | |
2104 | ++ndigits; | |
2105 | c = READCHAR; | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | if (ndigits == 0 || invalid_p) | |
2110 | { | |
2111 | char buf[50]; | |
2112 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2113 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2114 | } |
2115 | ||
2116 | return make_number (sign * number); | |
2117 | } | |
2118 | ||
2119 | ||
a742d646 GM |
2120 | /* Convert unibyte text in read_buffer to multibyte. |
2121 | ||
2122 | Initially, *P is a pointer after the end of the unibyte text, and | |
2123 | the pointer *END points after the end of read_buffer. | |
2124 | ||
2125 | If read_buffer doesn't have enough room to hold the result | |
2126 | of the conversion, reallocate it and adjust *P and *END. | |
2127 | ||
2128 | At the end, make *P point after the result of the conversion, and | |
2129 | return in *NCHARS the number of characters in the converted | |
2130 | text. */ | |
2131 | ||
2132 | static void | |
2133 | to_multibyte (p, end, nchars) | |
2134 | char **p, **end; | |
2135 | int *nchars; | |
2136 | { | |
2137 | int nbytes; | |
2138 | ||
2139 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 2140 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
2141 | { |
2142 | int offset = *p - read_buffer; | |
fe957e65 | 2143 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
2144 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
2145 | *p = read_buffer + offset; | |
2146 | *end = read_buffer + read_buffer_size; | |
2147 | } | |
2148 | ||
2149 | if (nbytes != *nchars) | |
2150 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
2151 | *p - read_buffer, nchars); | |
177c0ea7 | 2152 | |
a742d646 GM |
2153 | *p = read_buffer + nbytes; |
2154 | } | |
2155 | ||
2156 | ||
6428369f KH |
2157 | /* If the next token is ')' or ']' or '.', we store that character |
2158 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2159 | zero in *PCH and we read and return one lisp object. |
2160 | ||
2161 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2162 | ||
078e7b4a | 2163 | static Lisp_Object |
17634846 | 2164 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 2165 | register Lisp_Object readcharfun; |
e28552a4 | 2166 | int *pch; |
17634846 | 2167 | int first_in_list; |
078e7b4a JB |
2168 | { |
2169 | register int c; | |
4ad679f9 EN |
2170 | int uninterned_symbol = 0; |
2171 | ||
6428369f | 2172 | *pch = 0; |
078e7b4a JB |
2173 | |
2174 | retry: | |
2175 | ||
2176 | c = READCHAR; | |
9c97398c GM |
2177 | if (c < 0) |
2178 | end_of_file_error (); | |
078e7b4a JB |
2179 | |
2180 | switch (c) | |
2181 | { | |
2182 | case '(': | |
2183 | return read_list (0, readcharfun); | |
2184 | ||
2185 | case '[': | |
c15cfd1f | 2186 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2187 | |
2188 | case ')': | |
2189 | case ']': | |
078e7b4a | 2190 | { |
6428369f KH |
2191 | *pch = c; |
2192 | return Qnil; | |
078e7b4a JB |
2193 | } |
2194 | ||
2195 | case '#': | |
200f684e | 2196 | c = READCHAR; |
c2390933 RS |
2197 | if (c == '^') |
2198 | { | |
2199 | c = READCHAR; | |
2200 | if (c == '[') | |
2201 | { | |
2202 | Lisp_Object tmp; | |
c15cfd1f | 2203 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
2204 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
2205 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
2206 | error ("Invalid size char-table"); | |
2207 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 2208 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
2209 | return tmp; |
2210 | } | |
3701b5de KH |
2211 | else if (c == '^') |
2212 | { | |
2213 | c = READCHAR; | |
2214 | if (c == '[') | |
2215 | { | |
2216 | Lisp_Object tmp; | |
c15cfd1f | 2217 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
2218 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
2219 | error ("Invalid size char-table"); | |
2220 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2221 | XCHAR_TABLE (tmp)->top = Qnil; | |
2222 | return tmp; | |
2223 | } | |
336d4a9c | 2224 | invalid_syntax ("#^^", 3); |
3701b5de | 2225 | } |
336d4a9c | 2226 | invalid_syntax ("#^", 2); |
c2390933 RS |
2227 | } |
2228 | if (c == '&') | |
2229 | { | |
2230 | Lisp_Object length; | |
2231 | length = read1 (readcharfun, pch, first_in_list); | |
2232 | c = READCHAR; | |
2233 | if (c == '"') | |
2234 | { | |
2235 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2236 | int size_in_chars |
2237 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2238 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2239 | |
2240 | UNREAD (c); | |
2241 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2242 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2243 | /* We used to print 1 char too many |
2244 | when the number of bits was a multiple of 8. | |
2245 | Accept such input in case it came from an old version. */ | |
2246 | && ! (XFASTINT (length) | |
d1ca81d9 | 2247 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
336d4a9c | 2248 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2249 | |
c2390933 | 2250 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2251 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2252 | size_in_chars); |
67d3b149 | 2253 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2254 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2255 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2256 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2257 | return val; |
2258 | } | |
336d4a9c | 2259 | invalid_syntax ("#&...", 5); |
c2390933 | 2260 | } |
200f684e RS |
2261 | if (c == '[') |
2262 | { | |
2263 | /* Accept compiled functions at read-time so that we don't have to | |
2264 | build them using function calls. */ | |
748ef62f | 2265 | Lisp_Object tmp; |
c15cfd1f | 2266 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2267 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2268 | XVECTOR (tmp)->contents); | |
200f684e | 2269 | } |
748ef62f RS |
2270 | if (c == '(') |
2271 | { | |
2272 | Lisp_Object tmp; | |
2273 | struct gcpro gcpro1; | |
e28552a4 | 2274 | int ch; |
748ef62f RS |
2275 | |
2276 | /* Read the string itself. */ | |
17634846 | 2277 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2278 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2279 | invalid_syntax ("#", 1); |
748ef62f RS |
2280 | GCPRO1 (tmp); |
2281 | /* Read the intervals and their properties. */ | |
2282 | while (1) | |
2283 | { | |
2284 | Lisp_Object beg, end, plist; | |
2285 | ||
17634846 | 2286 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2287 | end = plist = Qnil; |
6428369f KH |
2288 | if (ch == ')') |
2289 | break; | |
2290 | if (ch == 0) | |
17634846 | 2291 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2292 | if (ch == 0) |
17634846 | 2293 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2294 | if (ch) |
336d4a9c | 2295 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2296 | Fset_text_properties (beg, end, plist, tmp); |
2297 | } | |
2298 | UNGCPRO; | |
2299 | return tmp; | |
2300 | } | |
177c0ea7 | 2301 | |
20ea2964 RS |
2302 | /* #@NUMBER is used to skip NUMBER following characters. |
2303 | That's used in .elc files to skip over doc strings | |
2304 | and function definitions. */ | |
2305 | if (c == '@') | |
2306 | { | |
2307 | int i, nskip = 0; | |
2308 | ||
2309 | /* Read a decimal integer. */ | |
2310 | while ((c = READCHAR) >= 0 | |
2311 | && c >= '0' && c <= '9') | |
2312 | { | |
2313 | nskip *= 10; | |
2314 | nskip += c - '0'; | |
2315 | } | |
2316 | if (c >= 0) | |
2317 | UNREAD (c); | |
177c0ea7 | 2318 | |
b2a30870 RS |
2319 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2320 | { | |
2321 | /* If we are supposed to force doc strings into core right now, | |
2322 | record the last string that we skipped, | |
2323 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2324 | |
2325 | /* But first exchange saved_doc_string | |
2326 | with prev_saved_doc_string, so we save two strings. */ | |
2327 | { | |
2328 | char *temp = saved_doc_string; | |
2329 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2330 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2331 | int temp_len = saved_doc_string_length; |
2332 | ||
2333 | saved_doc_string = prev_saved_doc_string; | |
2334 | saved_doc_string_size = prev_saved_doc_string_size; | |
2335 | saved_doc_string_position = prev_saved_doc_string_position; | |
2336 | saved_doc_string_length = prev_saved_doc_string_length; | |
2337 | ||
2338 | prev_saved_doc_string = temp; | |
2339 | prev_saved_doc_string_size = temp_size; | |
2340 | prev_saved_doc_string_position = temp_pos; | |
2341 | prev_saved_doc_string_length = temp_len; | |
2342 | } | |
2343 | ||
b2a30870 RS |
2344 | if (saved_doc_string_size == 0) |
2345 | { | |
2346 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2347 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2348 | } |
2349 | if (nskip > saved_doc_string_size) | |
2350 | { | |
2351 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2352 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2353 | saved_doc_string_size); | |
b2a30870 RS |
2354 | } |
2355 | ||
68c45bf0 | 2356 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2357 | |
2358 | /* Copy that many characters into saved_doc_string. */ | |
2359 | for (i = 0; i < nskip && c >= 0; i++) | |
2360 | saved_doc_string[i] = c = READCHAR; | |
2361 | ||
2362 | saved_doc_string_length = i; | |
2363 | } | |
2364 | else | |
b2a30870 RS |
2365 | { |
2366 | /* Skip that many characters. */ | |
2367 | for (i = 0; i < nskip && c >= 0; i++) | |
2368 | c = READCHAR; | |
2369 | } | |
d49f0c1a | 2370 | |
20ea2964 RS |
2371 | goto retry; |
2372 | } | |
e2518d02 RS |
2373 | if (c == '!') |
2374 | { | |
2375 | /* #! appears at the beginning of an executable file. | |
2376 | Skip the first line. */ | |
225c7a07 | 2377 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2378 | c = READCHAR; |
2379 | goto retry; | |
2380 | } | |
20ea2964 RS |
2381 | if (c == '$') |
2382 | return Vload_file_name; | |
2b6cae0c RS |
2383 | if (c == '\'') |
2384 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2385 | /* #:foo is the uninterned symbol named foo. */ |
2386 | if (c == ':') | |
2387 | { | |
2388 | uninterned_symbol = 1; | |
2389 | c = READCHAR; | |
2390 | goto default_label; | |
2391 | } | |
2392 | /* Reader forms that can reuse previously read objects. */ | |
2393 | if (c >= '0' && c <= '9') | |
2394 | { | |
2395 | int n = 0; | |
2396 | Lisp_Object tem; | |
2b6cae0c | 2397 | |
4ad679f9 EN |
2398 | /* Read a non-negative integer. */ |
2399 | while (c >= '0' && c <= '9') | |
2400 | { | |
2401 | n *= 10; | |
2402 | n += c - '0'; | |
2403 | c = READCHAR; | |
2404 | } | |
2405 | /* #n=object returns object, but associates it with n for #n#. */ | |
2406 | if (c == '=') | |
2407 | { | |
9e062b6c RS |
2408 | /* Make a placeholder for #n# to use temporarily */ |
2409 | Lisp_Object placeholder; | |
2410 | Lisp_Object cell; | |
2411 | ||
2412 | placeholder = Fcons(Qnil, Qnil); | |
2413 | cell = Fcons (make_number (n), placeholder); | |
2414 | read_objects = Fcons (cell, read_objects); | |
2415 | ||
2416 | /* Read the object itself. */ | |
4ad679f9 | 2417 | tem = read0 (readcharfun); |
9e062b6c RS |
2418 | |
2419 | /* Now put it everywhere the placeholder was... */ | |
2420 | substitute_object_in_subtree (tem, placeholder); | |
2421 | ||
2422 | /* ...and #n# will use the real value from now on. */ | |
2423 | Fsetcdr (cell, tem); | |
177c0ea7 | 2424 | |
4ad679f9 EN |
2425 | return tem; |
2426 | } | |
2427 | /* #n# returns a previously read object. */ | |
2428 | if (c == '#') | |
2429 | { | |
2430 | tem = Fassq (make_number (n), read_objects); | |
2431 | if (CONSP (tem)) | |
2432 | return XCDR (tem); | |
2433 | /* Fall through to error message. */ | |
2434 | } | |
bf5d1a17 GM |
2435 | else if (c == 'r' || c == 'R') |
2436 | return read_integer (readcharfun, n); | |
177c0ea7 | 2437 | |
4ad679f9 EN |
2438 | /* Fall through to error message. */ |
2439 | } | |
bf5d1a17 GM |
2440 | else if (c == 'x' || c == 'X') |
2441 | return read_integer (readcharfun, 16); | |
2442 | else if (c == 'o' || c == 'O') | |
2443 | return read_integer (readcharfun, 8); | |
2444 | else if (c == 'b' || c == 'B') | |
2445 | return read_integer (readcharfun, 2); | |
20ea2964 | 2446 | |
200f684e | 2447 | UNREAD (c); |
336d4a9c | 2448 | invalid_syntax ("#", 1); |
078e7b4a JB |
2449 | |
2450 | case ';': | |
2451 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2452 | goto retry; | |
2453 | ||
2454 | case '\'': | |
2455 | { | |
2456 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2457 | } | |
2458 | ||
17634846 RS |
2459 | case '`': |
2460 | if (first_in_list) | |
9ecb827b SM |
2461 | { |
2462 | Vold_style_backquotes = Qt; | |
2463 | goto default_label; | |
2464 | } | |
17634846 RS |
2465 | else |
2466 | { | |
2467 | Lisp_Object value; | |
2468 | ||
0ffbbdeb | 2469 | new_backquote_flag++; |
17634846 | 2470 | value = read0 (readcharfun); |
0ffbbdeb | 2471 | new_backquote_flag--; |
17634846 RS |
2472 | |
2473 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2474 | } | |
2475 | ||
2476 | case ',': | |
2477 | if (new_backquote_flag) | |
2478 | { | |
2479 | Lisp_Object comma_type = Qnil; | |
2480 | Lisp_Object value; | |
2481 | int ch = READCHAR; | |
2482 | ||
2483 | if (ch == '@') | |
2484 | comma_type = Qcomma_at; | |
2485 | else if (ch == '.') | |
2486 | comma_type = Qcomma_dot; | |
2487 | else | |
2488 | { | |
2489 | if (ch >= 0) UNREAD (ch); | |
2490 | comma_type = Qcomma; | |
2491 | } | |
2492 | ||
0ffbbdeb | 2493 | new_backquote_flag--; |
17634846 | 2494 | value = read0 (readcharfun); |
0ffbbdeb | 2495 | new_backquote_flag++; |
17634846 RS |
2496 | return Fcons (comma_type, Fcons (value, Qnil)); |
2497 | } | |
2498 | else | |
9ecb827b SM |
2499 | { |
2500 | Vold_style_backquotes = Qt; | |
2501 | goto default_label; | |
2502 | } | |
17634846 | 2503 | |
078e7b4a JB |
2504 | case '?': |
2505 | { | |
f6f79b37 | 2506 | int discard; |
df9c2be7 KS |
2507 | int next_char; |
2508 | int ok; | |
f6f79b37 | 2509 | |
078e7b4a | 2510 | c = READCHAR; |
9c97398c GM |
2511 | if (c < 0) |
2512 | end_of_file_error (); | |
078e7b4a | 2513 | |
b9284371 KS |
2514 | /* Accept `single space' syntax like (list ? x) where the |
2515 | whitespace character is SPC or TAB. | |
2516 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2517 | as there are well-established escape sequences for these. */ | |
2518 | if (c == ' ' || c == '\t') | |
2519 | return make_number (c); | |
2520 | ||
078e7b4a | 2521 | if (c == '\\') |
f6f79b37 | 2522 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2523 | else if (BASE_LEADING_CODE_P (c)) |
2524 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2525 | |
df9c2be7 KS |
2526 | next_char = READCHAR; |
2527 | if (next_char == '.') | |
2528 | { | |
2529 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2530 | int next_next_char = READCHAR; | |
2531 | UNREAD (next_next_char); | |
2532 | ||
2533 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2534 | || (next_next_char < 0200 |
2535 | && (index ("\"';([#?", next_next_char) | |
2536 | || (!first_in_list && next_next_char == '`') | |
2537 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2538 | } |
2539 | else | |
2540 | { | |
2541 | ok = (next_char <= 040 | |
e613ea97 KH |
2542 | || (next_char < 0200 |
2543 | && (index ("\"';()[]#?", next_char) | |
2544 | || (!first_in_list && next_char == '`') | |
2545 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2546 | } |
2547 | UNREAD (next_char); | |
336d4a9c KS |
2548 | if (ok) |
2549 | return make_number (c); | |
37cd4238 | 2550 | |
336d4a9c | 2551 | invalid_syntax ("?", 1); |
078e7b4a JB |
2552 | } |
2553 | ||
00a9a935 | 2554 | case '"': |
078e7b4a | 2555 | { |
a742d646 GM |
2556 | char *p = read_buffer; |
2557 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2558 | register int c; |
5150eeec RS |
2559 | /* 1 if we saw an escape sequence specifying |
2560 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2561 | int force_multibyte = 0; |
5150eeec | 2562 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2563 | a single-byte character. */ |
2564 | int force_singlebyte = 0; | |
5150eeec RS |
2565 | /* 1 if read_buffer contains multibyte text now. */ |
2566 | int is_multibyte = 0; | |
078e7b4a | 2567 | int cancel = 0; |
5150eeec | 2568 | int nchars = 0; |
078e7b4a JB |
2569 | |
2570 | while ((c = READCHAR) >= 0 | |
2571 | && c != '\"') | |
2572 | { | |
449fea39 | 2573 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2574 | { |
5d65df0d GM |
2575 | int offset = p - read_buffer; |
2576 | read_buffer = (char *) xrealloc (read_buffer, | |
2577 | read_buffer_size *= 2); | |
2578 | p = read_buffer + offset; | |
078e7b4a JB |
2579 | end = read_buffer + read_buffer_size; |
2580 | } | |
bed23cb2 | 2581 | |
078e7b4a | 2582 | if (c == '\\') |
03e88613 | 2583 | { |
f6f79b37 RS |
2584 | int byterep; |
2585 | ||
2586 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2587 | |
2588 | /* C is -1 if \ newline has just been seen */ | |
2589 | if (c == -1) | |
03e88613 | 2590 | { |
bed23cb2 RS |
2591 | if (p == read_buffer) |
2592 | cancel = 1; | |
03e88613 RS |
2593 | continue; |
2594 | } | |
bed23cb2 | 2595 | |
f6f79b37 | 2596 | if (byterep == 1) |
e7fc914b | 2597 | force_singlebyte = 1; |
f6f79b37 RS |
2598 | else if (byterep == 2) |
2599 | force_multibyte = 1; | |
03e88613 | 2600 | } |
6f7f43d5 | 2601 | |
5150eeec RS |
2602 | /* A character that must be multibyte forces multibyte. */ |
2603 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2604 | force_multibyte = 1; | |
2605 | ||
2606 | /* If we just discovered the need to be multibyte, | |
2607 | convert the text accumulated thus far. */ | |
2608 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2609 | { |
5150eeec RS |
2610 | is_multibyte = 1; |
2611 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2612 | } |
988c2f83 | 2613 | |
5150eeec RS |
2614 | /* Allow `\C- ' and `\C-?'. */ |
2615 | if (c == (CHAR_CTL | ' ')) | |
2616 | c = 0; | |
2617 | else if (c == (CHAR_CTL | '?')) | |
2618 | c = 127; | |
95af0924 | 2619 | |
5150eeec RS |
2620 | if (c & CHAR_SHIFT) |
2621 | { | |
2622 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2623 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2624 | c &= ~CHAR_SHIFT; | |
2625 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2626 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2627 | } |
5150eeec RS |
2628 | |
2629 | if (c & CHAR_META) | |
2630 | /* Move the meta bit to the right place for a string. */ | |
2631 | c = (c & ~CHAR_META) | 0x80; | |
2632 | if (c & CHAR_MODIFIER_MASK) | |
2633 | error ("Invalid modifier in string"); | |
2634 | ||
2635 | if (is_multibyte) | |
2636 | p += CHAR_STRING (c, p); | |
2637 | else | |
2638 | *p++ = c; | |
2639 | ||
2640 | nchars++; | |
078e7b4a | 2641 | } |
5150eeec | 2642 | |
6f7f43d5 | 2643 | if (c < 0) |
9c97398c | 2644 | end_of_file_error (); |
078e7b4a JB |
2645 | |
2646 | /* If purifying, and string starts with \ newline, | |
2647 | return zero instead. This is for doc strings | |
08564963 | 2648 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2649 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2650 | return make_number (0); |
2651 | ||
5150eeec RS |
2652 | if (is_multibyte || force_singlebyte) |
2653 | ; | |
94e554db RS |
2654 | else if (load_convert_to_unibyte) |
2655 | { | |
2656 | Lisp_Object string; | |
a742d646 | 2657 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2658 | if (p - read_buffer != nchars) |
2659 | { | |
2660 | string = make_multibyte_string (read_buffer, nchars, | |
2661 | p - read_buffer); | |
2662 | return Fstring_make_unibyte (string); | |
2663 | } | |
5150eeec RS |
2664 | /* We can make a unibyte string directly. */ |
2665 | is_multibyte = 0; | |
94e554db | 2666 | } |
8db9dc66 RS |
2667 | else if (EQ (readcharfun, Qget_file_char) |
2668 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2669 | { |
2670 | /* Nowadays, reading directly from a file is used only for | |
2671 | compiled Emacs Lisp files, and those always use the | |
2672 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2673 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2674 | byte-compile-dynamic = t). So make the string multibyte |
2675 | if the string contains any multibyte sequences. | |
2676 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2677 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2678 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2679 | } |
e28552a4 | 2680 | else |
bed23cb2 RS |
2681 | /* In all other cases, if we read these bytes as |
2682 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2683 | ; |
e7fc914b | 2684 | |
abb13b09 CW |
2685 | /* We want readchar_count to be the number of characters, not |
2686 | bytes. Hence we adjust for multibyte characters in the | |
2687 | string. ... But it doesn't seem to be necessary, because | |
2688 | READCHAR *does* read multibyte characters from buffers. */ | |
2689 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2690 | if (read_pure) |
491f16a2 | 2691 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2692 | is_multibyte); |
491f16a2 | 2693 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2694 | is_multibyte); |
078e7b4a JB |
2695 | } |
2696 | ||
109d300c JB |
2697 | case '.': |
2698 | { | |
109d300c JB |
2699 | int next_char = READCHAR; |
2700 | UNREAD (next_char); | |
2701 | ||
035eec48 | 2702 | if (next_char <= 040 |
e613ea97 | 2703 | || (next_char < 0200 |
95af0924 KS |
2704 | && (index ("\"';([#?", next_char) |
2705 | || (!first_in_list && next_char == '`') | |
2706 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2707 | { |
6428369f KH |
2708 | *pch = c; |
2709 | return Qnil; | |
109d300c JB |
2710 | } |
2711 | ||
2712 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2713 | below will now loop at least once, assuring that we will not | |
2714 | try to UNREAD two characters in a row. */ | |
2715 | } | |
078e7b4a | 2716 | default: |
17634846 | 2717 | default_label: |
078e7b4a JB |
2718 | if (c <= 040) goto retry; |
2719 | { | |
38404229 | 2720 | char *p = read_buffer; |
481c6336 | 2721 | int quoted = 0; |
078e7b4a JB |
2722 | |
2723 | { | |
38404229 | 2724 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2725 | |
6f7f43d5 | 2726 | while (c > 040 |
e613ea97 KH |
2727 | && (c >= 0200 |
2728 | || (!index ("\"';()[]#", c) | |
2729 | && !(!first_in_list && c == '`') | |
2730 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2731 | { |
449fea39 | 2732 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2733 | { |
5d65df0d GM |
2734 | int offset = p - read_buffer; |
2735 | read_buffer = (char *) xrealloc (read_buffer, | |
2736 | read_buffer_size *= 2); | |
2737 | p = read_buffer + offset; | |
078e7b4a JB |
2738 | end = read_buffer + read_buffer_size; |
2739 | } | |
177c0ea7 | 2740 | |
078e7b4a | 2741 | if (c == '\\') |
481c6336 RS |
2742 | { |
2743 | c = READCHAR; | |
4ab11c09 GM |
2744 | if (c == -1) |
2745 | end_of_file_error (); | |
481c6336 RS |
2746 | quoted = 1; |
2747 | } | |
6f7f43d5 | 2748 | |
bed23cb2 | 2749 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2750 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2751 | else |
2752 | *p++ = c; | |
6f7f43d5 | 2753 | |
078e7b4a JB |
2754 | c = READCHAR; |
2755 | } | |
2756 | ||
2757 | if (p == end) | |
2758 | { | |
5d65df0d GM |
2759 | int offset = p - read_buffer; |
2760 | read_buffer = (char *) xrealloc (read_buffer, | |
2761 | read_buffer_size *= 2); | |
2762 | p = read_buffer + offset; | |
2763 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2764 | } |
2765 | *p = 0; | |
2766 | if (c >= 0) | |
2767 | UNREAD (c); | |
2768 | } | |
2769 | ||
4ad679f9 | 2770 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2771 | { |
2772 | register char *p1; | |
2773 | register Lisp_Object val; | |
2774 | p1 = read_buffer; | |
2775 | if (*p1 == '+' || *p1 == '-') p1++; | |
2776 | /* Is it an integer? */ | |
2777 | if (p1 != p) | |
2778 | { | |
2779 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2780 | /* Integers can have trailing decimal points. */ |
2781 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2782 | if (p1 == p) |
2783 | /* It is an integer. */ | |
2784 | { | |
481c6336 RS |
2785 | if (p1[-1] == '.') |
2786 | p1[-1] = '\0'; | |
faca07fb RS |
2787 | if (sizeof (int) == sizeof (EMACS_INT)) |
2788 | XSETINT (val, atoi (read_buffer)); | |
2789 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2790 | XSETINT (val, atol (read_buffer)); | |
2791 | else | |
2792 | abort (); | |
481c6336 RS |
2793 | return val; |
2794 | } | |
2795 | } | |
481c6336 | 2796 | if (isfloat_string (read_buffer)) |
eb659c41 | 2797 | { |
a8972052 PE |
2798 | /* Compute NaN and infinities using 0.0 in a variable, |
2799 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2800 | than we are. */ |
3c329963 | 2801 | double zero = 0.0; |
a8972052 PE |
2802 | |
2803 | double value; | |
2804 | ||
2805 | /* Negate the value ourselves. This treats 0, NaNs, | |
2806 | and infinity properly on IEEE floating point hosts, | |
2807 | and works around a common bug where atof ("-0.0") | |
2808 | drops the sign. */ | |
2809 | int negative = read_buffer[0] == '-'; | |
2810 | ||
2811 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2812 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2813 | switch (p[-1]) |
eb659c41 | 2814 | { |
a8972052 PE |
2815 | case 'F': |
2816 | value = 1.0 / zero; | |
2817 | break; | |
2818 | case 'N': | |
2819 | value = zero / zero; | |
7690cbb0 RS |
2820 | |
2821 | /* If that made a "negative" NaN, negate it. */ | |
2822 | ||
2823 | { | |
2824 | int i; | |
2825 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2826 | ||
2827 | u_data.d = value; | |
2828 | u_minus_zero.d = - 0.0; | |
2829 | for (i = 0; i < sizeof (double); i++) | |
2830 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2831 | { | |
2832 | value = - value; | |
2833 | break; | |
2834 | } | |
2835 | } | |
2836 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2837 | break; |
2838 | default: | |
2839 | value = atof (read_buffer + negative); | |
2840 | break; | |
eb659c41 | 2841 | } |
a8972052 PE |
2842 | |
2843 | return make_float (negative ? - value : value); | |
eb659c41 | 2844 | } |
481c6336 | 2845 | } |
abb13b09 CW |
2846 | { |
2847 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2848 | : intern (read_buffer); | |
2849 | if (EQ (Vread_with_symbol_positions, Qt) | |
2850 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2851 | Vread_symbol_positions_list = |
abb13b09 CW |
2852 | /* Kind of a hack; this will probably fail if characters |
2853 | in the symbol name were escaped. Not really a big | |
2854 | deal, though. */ | |
f74db720 SM |
2855 | Fcons (Fcons (result, |
2856 | make_number (readchar_count | |
2857 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2858 | Vread_symbol_positions_list); |
2859 | return result; | |
2860 | } | |
078e7b4a JB |
2861 | } |
2862 | } | |
2863 | } | |
2864 | \f | |
9e062b6c RS |
2865 | |
2866 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2867 | static Lisp_Object seen_list; | |
2868 | ||
2869 | static void | |
2870 | substitute_object_in_subtree (object, placeholder) | |
2871 | Lisp_Object object; | |
2872 | Lisp_Object placeholder; | |
2873 | { | |
2874 | Lisp_Object check_object; | |
2875 | ||
2876 | /* We haven't seen any objects when we start. */ | |
2877 | seen_list = Qnil; | |
2878 | ||
2879 | /* Make all the substitutions. */ | |
2880 | check_object | |
2881 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2882 | |
9e062b6c RS |
2883 | /* Clear seen_list because we're done with it. */ |
2884 | seen_list = Qnil; | |
2885 | ||
2886 | /* The returned object here is expected to always eq the | |
2887 | original. */ | |
2888 | if (!EQ (check_object, object)) | |
2889 | error ("Unexpected mutation error in reader"); | |
2890 | } | |
2891 | ||
2892 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2893 | #define SUBSTITUTE(get_val, set_val) \ | |
2894 | { \ | |
2895 | Lisp_Object old_value = get_val; \ | |
2896 | Lisp_Object true_value \ | |
2897 | = substitute_object_recurse (object, placeholder,\ | |
2898 | old_value); \ | |
2899 | \ | |
2900 | if (!EQ (old_value, true_value)) \ | |
2901 | { \ | |
2902 | set_val; \ | |
2903 | } \ | |
2904 | } | |
2905 | ||
2906 | static Lisp_Object | |
2907 | substitute_object_recurse (object, placeholder, subtree) | |
2908 | Lisp_Object object; | |
2909 | Lisp_Object placeholder; | |
2910 | Lisp_Object subtree; | |
2911 | { | |
2912 | /* If we find the placeholder, return the target object. */ | |
2913 | if (EQ (placeholder, subtree)) | |
2914 | return object; | |
2915 | ||
2916 | /* If we've been to this node before, don't explore it again. */ | |
2917 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2918 | return subtree; | |
2919 | ||
2920 | /* If this node can be the entry point to a cycle, remember that | |
2921 | we've seen it. It can only be such an entry point if it was made | |
2922 | by #n=, which means that we can find it as a value in | |
2923 | read_objects. */ | |
2924 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2925 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2926 | |
9e062b6c RS |
2927 | /* Recurse according to subtree's type. |
2928 | Every branch must return a Lisp_Object. */ | |
2929 | switch (XTYPE (subtree)) | |
2930 | { | |
2931 | case Lisp_Vectorlike: | |
2932 | { | |
2933 | int i; | |
7c752c80 | 2934 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2935 | for (i = 0; i < length; i++) |
2936 | { | |
2937 | Lisp_Object idx = make_number (i); | |
2938 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2939 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2940 | } |
2941 | return subtree; | |
2942 | } | |
2943 | ||
2944 | case Lisp_Cons: | |
2945 | { | |
2946 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2947 | Fsetcar (subtree, true_value)); |
9e062b6c | 2948 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2949 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2950 | return subtree; |
2951 | } | |
2952 | ||
9e062b6c RS |
2953 | case Lisp_String: |
2954 | { | |
2955 | /* Check for text properties in each interval. | |
e61b9b87 | 2956 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2957 | |
d5db4077 | 2958 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2959 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2960 | |
0d74b006 SM |
2961 | traverse_intervals_noorder (root_interval, |
2962 | &substitute_in_interval, arg); | |
9e062b6c RS |
2963 | |
2964 | return subtree; | |
2965 | } | |
9e062b6c RS |
2966 | |
2967 | /* Other types don't recurse any further. */ | |
2968 | default: | |
2969 | return subtree; | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | /* Helper function for substitute_object_recurse. */ | |
2974 | static void | |
2975 | substitute_in_interval (interval, arg) | |
2976 | INTERVAL interval; | |
2977 | Lisp_Object arg; | |
2978 | { | |
2979 | Lisp_Object object = Fcar (arg); | |
2980 | Lisp_Object placeholder = Fcdr (arg); | |
2981 | ||
2982 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2983 | } | |
2984 | ||
2985 | \f | |
078e7b4a JB |
2986 | #define LEAD_INT 1 |
2987 | #define DOT_CHAR 2 | |
2988 | #define TRAIL_INT 4 | |
2989 | #define E_CHAR 8 | |
2990 | #define EXP_INT 16 | |
2991 | ||
2992 | int | |
2993 | isfloat_string (cp) | |
2994 | register char *cp; | |
2995 | { | |
c1a2f60a | 2996 | register int state; |
177c0ea7 | 2997 | |
d8578e58 RS |
2998 | char *start = cp; |
2999 | ||
078e7b4a JB |
3000 | state = 0; |
3001 | if (*cp == '+' || *cp == '-') | |
3002 | cp++; | |
3003 | ||
075027b1 | 3004 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3005 | { |
3006 | state |= LEAD_INT; | |
075027b1 RS |
3007 | while (*cp >= '0' && *cp <= '9') |
3008 | cp++; | |
078e7b4a JB |
3009 | } |
3010 | if (*cp == '.') | |
3011 | { | |
3012 | state |= DOT_CHAR; | |
3013 | cp++; | |
3014 | } | |
075027b1 | 3015 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3016 | { |
3017 | state |= TRAIL_INT; | |
075027b1 | 3018 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3019 | cp++; |
3020 | } | |
a35f88bf | 3021 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3022 | { |
3023 | state |= E_CHAR; | |
3024 | cp++; | |
e73997a1 RS |
3025 | if (*cp == '+' || *cp == '-') |
3026 | cp++; | |
078e7b4a | 3027 | } |
078e7b4a | 3028 | |
075027b1 | 3029 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3030 | { |
3031 | state |= EXP_INT; | |
075027b1 | 3032 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3033 | cp++; |
3034 | } | |
d8578e58 RS |
3035 | else if (cp == start) |
3036 | ; | |
eb659c41 RS |
3037 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3038 | { | |
3039 | state |= EXP_INT; | |
3040 | cp += 3; | |
3041 | } | |
3042 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3043 | { | |
3044 | state |= EXP_INT; | |
3045 | cp += 3; | |
3046 | } | |
3047 | ||
37579d7c | 3048 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 3049 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3050 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3051 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3052 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3053 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3054 | } |
cc94f3b2 | 3055 | |
078e7b4a JB |
3056 | \f |
3057 | static Lisp_Object | |
c15cfd1f | 3058 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 3059 | Lisp_Object readcharfun; |
c15cfd1f | 3060 | int bytecodeflag; |
078e7b4a JB |
3061 | { |
3062 | register int i; | |
3063 | register int size; | |
3064 | register Lisp_Object *ptr; | |
c15cfd1f | 3065 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3066 | register struct Lisp_Cons *otem; |
3067 | Lisp_Object len; | |
3068 | ||
3069 | tem = read_list (1, readcharfun); | |
3070 | len = Flength (tem); | |
3071 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3072 | ||
078e7b4a JB |
3073 | size = XVECTOR (vector)->size; |
3074 | ptr = XVECTOR (vector)->contents; | |
3075 | for (i = 0; i < size; i++) | |
3076 | { | |
c15cfd1f RS |
3077 | item = Fcar (tem); |
3078 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3079 | bytecode object, the docstring containing the bytecode and | |
3080 | constants values must be treated as unibyte and passed to | |
3081 | Fread, to get the actual bytecode string and constants vector. */ | |
3082 | if (bytecodeflag && load_force_doc_strings) | |
3083 | { | |
3084 | if (i == COMPILED_BYTECODE) | |
3085 | { | |
3086 | if (!STRINGP (item)) | |
6fa2b890 | 3087 | error ("Invalid byte code"); |
c15cfd1f RS |
3088 | |
3089 | /* Delay handling the bytecode slot until we know whether | |
3090 | it is lazily-loaded (we can tell by whether the | |
3091 | constants slot is nil). */ | |
3092 | ptr[COMPILED_CONSTANTS] = item; | |
3093 | item = Qnil; | |
3094 | } | |
3095 | else if (i == COMPILED_CONSTANTS) | |
3096 | { | |
3097 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3098 | ||
3099 | if (NILP (item)) | |
3100 | { | |
3101 | /* Coerce string to unibyte (like string-as-unibyte, | |
3102 | but without generating extra garbage and | |
3103 | guaranteeing no change in the contents). */ | |
bee91904 | 3104 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3105 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
3106 | |
3107 | item = Fread (bytestr); | |
3108 | if (!CONSP (item)) | |
6fa2b890 | 3109 | error ("Invalid byte code"); |
c15cfd1f RS |
3110 | |
3111 | otem = XCONS (item); | |
c1d497be KR |
3112 | bytestr = XCAR (item); |
3113 | item = XCDR (item); | |
c15cfd1f RS |
3114 | free_cons (otem); |
3115 | } | |
3116 | ||
3117 | /* Now handle the bytecode slot. */ | |
3118 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3119 | } | |
3120 | } | |
3121 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3122 | otem = XCONS (tem); |
3123 | tem = Fcdr (tem); | |
3124 | free_cons (otem); | |
3125 | } | |
3126 | return vector; | |
3127 | } | |
177c0ea7 | 3128 | |
6f7f43d5 RS |
3129 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3130 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3131 | and make structure pure. */ |
3132 | ||
3133 | static Lisp_Object | |
3134 | read_list (flag, readcharfun) | |
3135 | int flag; | |
3136 | register Lisp_Object readcharfun; | |
3137 | { | |
3138 | /* -1 means check next element for defun, | |
3139 | 0 means don't check, | |
3140 | 1 means already checked and found defun. */ | |
3141 | int defunflag = flag < 0 ? -1 : 0; | |
3142 | Lisp_Object val, tail; | |
3143 | register Lisp_Object elt, tem; | |
3144 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3145 | /* 0 is the normal case. |
b2a30870 | 3146 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3147 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3148 | int doc_reference = 0; |
078e7b4a | 3149 | |
17634846 RS |
3150 | /* Initialize this to 1 if we are reading a list. */ |
3151 | int first_in_list = flag <= 0; | |
3152 | ||
078e7b4a JB |
3153 | val = Qnil; |
3154 | tail = Qnil; | |
3155 | ||
3156 | while (1) | |
3157 | { | |
e28552a4 | 3158 | int ch; |
078e7b4a | 3159 | GCPRO2 (val, tail); |
17634846 | 3160 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3161 | UNGCPRO; |
20ea2964 | 3162 | |
17634846 RS |
3163 | first_in_list = 0; |
3164 | ||
821d417e | 3165 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3166 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3167 | && ! NILP (elt) |
821d417e RS |
3168 | && !NILP (Vpurify_flag)) |
3169 | { | |
3170 | if (NILP (Vdoc_file_name)) | |
3171 | /* We have not yet called Snarf-documentation, so assume | |
3172 | this file is described in the DOC-MM.NN file | |
3173 | and Snarf-documentation will fill in the right value later. | |
3174 | For now, replace the whole list with 0. */ | |
3175 | doc_reference = 1; | |
3176 | else | |
3177 | /* We have already called Snarf-documentation, so make a relative | |
3178 | file name for this file, so it can be found properly | |
3179 | in the installed Lisp directory. | |
3180 | We don't use Fexpand_file_name because that would make | |
3181 | the directory absolute now. */ | |
3182 | elt = concat2 (build_string ("../lisp/"), | |
3183 | Ffile_name_nondirectory (elt)); | |
3184 | } | |
b2a30870 | 3185 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3186 | && ! NILP (elt) |
b2a30870 RS |
3187 | && load_force_doc_strings) |
3188 | doc_reference = 2; | |
20ea2964 | 3189 | |
6428369f | 3190 | if (ch) |
078e7b4a JB |
3191 | { |
3192 | if (flag > 0) | |
3193 | { | |
6428369f | 3194 | if (ch == ']') |
078e7b4a | 3195 | return val; |
336d4a9c | 3196 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3197 | } |
6428369f | 3198 | if (ch == ')') |
078e7b4a | 3199 | return val; |
6428369f | 3200 | if (ch == '.') |
078e7b4a JB |
3201 | { |
3202 | GCPRO2 (val, tail); | |
265a9e55 | 3203 | if (!NILP (tail)) |
f5df591a | 3204 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3205 | else |
3206 | val = read0 (readcharfun); | |
17634846 | 3207 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3208 | UNGCPRO; |
6428369f | 3209 | if (ch == ')') |
821d417e RS |
3210 | { |
3211 | if (doc_reference == 1) | |
3212 | return make_number (0); | |
b2a30870 RS |
3213 | if (doc_reference == 2) |
3214 | { | |
3215 | /* Get a doc string from the file we are loading. | |
3216 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 3217 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3218 | /* Position is negative for user variables. */ |
3219 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3220 | if (pos >= saved_doc_string_position |
3221 | && pos < (saved_doc_string_position | |
3222 | + saved_doc_string_length)) | |
3223 | { | |
3224 | int start = pos - saved_doc_string_position; | |
3225 | int from, to; | |
3226 | ||
3227 | /* Process quoting with ^A, | |
3228 | and find the end of the string, | |
3229 | which is marked with ^_ (037). */ | |
3230 | for (from = start, to = start; | |
3231 | saved_doc_string[from] != 037;) | |
3232 | { | |
3233 | int c = saved_doc_string[from++]; | |
3234 | if (c == 1) | |
3235 | { | |
3236 | c = saved_doc_string[from++]; | |
3237 | if (c == 1) | |
3238 | saved_doc_string[to++] = c; | |
3239 | else if (c == '0') | |
3240 | saved_doc_string[to++] = 0; | |
3241 | else if (c == '_') | |
3242 | saved_doc_string[to++] = 037; | |
3243 | } | |
3244 | else | |
3245 | saved_doc_string[to++] = c; | |
3246 | } | |
3247 | ||
3248 | return make_string (saved_doc_string + start, | |
3249 | to - start); | |
3250 | } | |
c15cfd1f RS |
3251 | /* Look in prev_saved_doc_string the same way. */ |
3252 | else if (pos >= prev_saved_doc_string_position | |
3253 | && pos < (prev_saved_doc_string_position | |
3254 | + prev_saved_doc_string_length)) | |
3255 | { | |
3256 | int start = pos - prev_saved_doc_string_position; | |
3257 | int from, to; | |
3258 | ||
3259 | /* Process quoting with ^A, | |
3260 | and find the end of the string, | |
3261 | which is marked with ^_ (037). */ | |
3262 | for (from = start, to = start; | |
3263 | prev_saved_doc_string[from] != 037;) | |
3264 | { | |
3265 | int c = prev_saved_doc_string[from++]; | |
3266 | if (c == 1) | |
3267 | { | |
3268 | c = prev_saved_doc_string[from++]; | |
3269 | if (c == 1) | |
3270 | prev_saved_doc_string[to++] = c; | |
3271 | else if (c == '0') | |
3272 | prev_saved_doc_string[to++] = 0; | |
3273 | else if (c == '_') | |
3274 | prev_saved_doc_string[to++] = 037; | |
3275 | } | |
3276 | else | |
3277 | prev_saved_doc_string[to++] = c; | |
3278 | } | |
3279 | ||
3280 | return make_string (prev_saved_doc_string + start, | |
3281 | to - start); | |
3282 | } | |
b2a30870 | 3283 | else |
6fe9cce5 | 3284 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3285 | } |
3286 | ||
821d417e RS |
3287 | return val; |
3288 | } | |
336d4a9c | 3289 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3290 | } |
336d4a9c | 3291 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3292 | } |
3293 | tem = (read_pure && flag <= 0 | |
3294 | ? pure_cons (elt, Qnil) | |
3295 | : Fcons (elt, Qnil)); | |
265a9e55 | 3296 | if (!NILP (tail)) |
f5df591a | 3297 | XSETCDR (tail, tem); |
078e7b4a JB |
3298 | else |
3299 | val = tem; | |
3300 | tail = tem; | |
3301 | if (defunflag < 0) | |
3302 | defunflag = EQ (elt, Qdefun); | |
3303 | else if (defunflag > 0) | |
3304 | read_pure = 1; | |
3305 | } | |
3306 | } | |
3307 | \f | |
3308 | Lisp_Object Vobarray; | |
3309 | Lisp_Object initial_obarray; | |
3310 | ||
d007f5c8 RS |
3311 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3312 | ||
3313 | int oblookup_last_bucket_number; | |
3314 | ||
3315 | static int hash_string (); | |
d007f5c8 RS |
3316 | |
3317 | /* Get an error if OBARRAY is not an obarray. | |
3318 | If it is one, return it. */ | |
3319 | ||
078e7b4a JB |
3320 | Lisp_Object |
3321 | check_obarray (obarray) | |
3322 | Lisp_Object obarray; | |
3323 | { | |
8878319c | 3324 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3325 | { |
3326 | /* If Vobarray is now invalid, force it to be valid. */ | |
3327 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3328 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3329 | } |
3330 | return obarray; | |
3331 | } | |
3332 | ||
d007f5c8 RS |
3333 | /* Intern the C string STR: return a symbol with that name, |
3334 | interned in the current obarray. */ | |
078e7b4a JB |
3335 | |
3336 | Lisp_Object | |
3337 | intern (str) | |
4b2dd274 | 3338 | const char *str; |
078e7b4a JB |
3339 | { |
3340 | Lisp_Object tem; | |
3341 | int len = strlen (str); | |
153a17b7 | 3342 | Lisp_Object obarray; |
078e7b4a | 3343 | |
153a17b7 | 3344 | obarray = Vobarray; |
cfff016d | 3345 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3346 | obarray = check_obarray (obarray); |
e28552a4 | 3347 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3348 | if (SYMBOLP (tem)) |
078e7b4a | 3349 | return tem; |
87631ef7 | 3350 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3351 | } |
4ad679f9 EN |
3352 | |
3353 | /* Create an uninterned symbol with name STR. */ | |
3354 | ||
3355 | Lisp_Object | |
3356 | make_symbol (str) | |
3357 | char *str; | |
3358 | { | |
3359 | int len = strlen (str); | |
3360 | ||
3361 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3362 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3363 | : make_string (str, len))); |
3364 | } | |
d007f5c8 | 3365 | \f |
078e7b4a | 3366 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3367 | doc: /* Return the canonical symbol whose name is STRING. |
3368 | If there is none, one is created by this function and returned. | |
3369 | A second optional argument specifies the obarray to use; | |
3370 | it defaults to the value of `obarray'. */) | |
3371 | (string, obarray) | |
9391b698 | 3372 | Lisp_Object string, obarray; |
078e7b4a JB |
3373 | { |
3374 | register Lisp_Object tem, sym, *ptr; | |
3375 | ||
265a9e55 | 3376 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3377 | obarray = check_obarray (obarray); |
3378 | ||
b7826503 | 3379 | CHECK_STRING (string); |
078e7b4a | 3380 | |
d5db4077 KR |
3381 | tem = oblookup (obarray, SDATA (string), |
3382 | SCHARS (string), | |
3383 | SBYTES (string)); | |
cfff016d | 3384 | if (!INTEGERP (tem)) |
078e7b4a JB |
3385 | return tem; |
3386 | ||
265a9e55 | 3387 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3388 | string = Fpurecopy (string); |
3389 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3390 | |
3391 | if (EQ (obarray, initial_obarray)) | |
3392 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3393 | else | |
3394 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3395 | |
d5db4077 | 3396 | if ((SREF (string, 0) == ':') |
a458d45d | 3397 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3398 | { |
3399 | XSYMBOL (sym)->constant = 1; | |
3400 | XSYMBOL (sym)->value = sym; | |
3401 | } | |
a0549832 | 3402 | |
078e7b4a | 3403 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3404 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3405 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3406 | else | |
3407 | XSYMBOL (sym)->next = 0; | |
3408 | *ptr = sym; | |
3409 | return sym; | |
3410 | } | |
3411 | ||
3412 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3413 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3414 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3415 | symbol is searched for. | |
3416 | A second optional argument specifies the obarray to use; | |
3417 | it defaults to the value of `obarray'. */) | |
3418 | (name, obarray) | |
b55048d4 | 3419 | Lisp_Object name, obarray; |
078e7b4a | 3420 | { |
c2d47f4b | 3421 | register Lisp_Object tem, string; |
078e7b4a | 3422 | |
265a9e55 | 3423 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3424 | obarray = check_obarray (obarray); |
3425 | ||
b55048d4 GM |
3426 | if (!SYMBOLP (name)) |
3427 | { | |
b7826503 | 3428 | CHECK_STRING (name); |
c2d47f4b | 3429 | string = name; |
b55048d4 GM |
3430 | } |
3431 | else | |
c2d47f4b | 3432 | string = SYMBOL_NAME (name); |
078e7b4a | 3433 | |
c2d47f4b | 3434 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3435 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3436 | return Qnil; | |
3437 | else | |
078e7b4a | 3438 | return tem; |
078e7b4a | 3439 | } |
d007f5c8 RS |
3440 | \f |
3441 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3442 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3443 | The value is t if a symbol was found and deleted, nil otherwise. | |
3444 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3445 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3446 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3447 | (name, obarray) | |
d007f5c8 RS |
3448 | Lisp_Object name, obarray; |
3449 | { | |
3450 | register Lisp_Object string, tem; | |
3451 | int hash; | |
3452 | ||
3453 | if (NILP (obarray)) obarray = Vobarray; | |
3454 | obarray = check_obarray (obarray); | |
3455 | ||
3456 | if (SYMBOLP (name)) | |
d4c83cae | 3457 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3458 | else |
3459 | { | |
b7826503 | 3460 | CHECK_STRING (name); |
d007f5c8 RS |
3461 | string = name; |
3462 | } | |
3463 | ||
d5db4077 KR |
3464 | tem = oblookup (obarray, SDATA (string), |
3465 | SCHARS (string), | |
3466 | SBYTES (string)); | |
d007f5c8 RS |
3467 | if (INTEGERP (tem)) |
3468 | return Qnil; | |
3469 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3470 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3471 | return Qnil; | |
3472 | ||
44c6c019 GM |
3473 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3474 | XSYMBOL (tem)->constant = 0; | |
3475 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3476 | |
d007f5c8 RS |
3477 | hash = oblookup_last_bucket_number; |
3478 | ||
3479 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3480 | { |
3481 | if (XSYMBOL (tem)->next) | |
3482 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3483 | else | |
3484 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3485 | } | |
d007f5c8 RS |
3486 | else |
3487 | { | |
3488 | Lisp_Object tail, following; | |
3489 | ||
3490 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3491 | XSYMBOL (tail)->next; | |
3492 | tail = following) | |
3493 | { | |
3494 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3495 | if (EQ (following, tem)) | |
3496 | { | |
3497 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3498 | break; | |
3499 | } | |
3500 | } | |
3501 | } | |
3502 | ||
3503 | return Qt; | |
3504 | } | |
3505 | \f | |
3506 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3507 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3508 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3509 | |
3510 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3511 | |
3512 | Lisp_Object | |
e28552a4 | 3513 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3514 | Lisp_Object obarray; |
4b2dd274 | 3515 | register const char *ptr; |
e28552a4 | 3516 | int size, size_byte; |
078e7b4a | 3517 | { |
7a70b397 RS |
3518 | int hash; |
3519 | int obsize; | |
078e7b4a JB |
3520 | register Lisp_Object tail; |
3521 | Lisp_Object bucket, tem; | |
3522 | ||
cfff016d | 3523 | if (!VECTORP (obarray) |
7c79a684 | 3524 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3525 | { |
3526 | obarray = check_obarray (obarray); | |
3527 | obsize = XVECTOR (obarray)->size; | |
3528 | } | |
519418b3 RS |
3529 | /* This is sometimes needed in the middle of GC. */ |
3530 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3531 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3532 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3533 | hash %= obsize; |
3534 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3535 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3536 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3537 | ; |
cfff016d | 3538 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3539 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3540 | else |
3541 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3542 | { |
d5db4077 KR |
3543 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3544 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3545 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3546 | return tail; |
3547 | else if (XSYMBOL (tail)->next == 0) | |
3548 | break; | |
3549 | } | |
1805de4f | 3550 | XSETINT (tem, hash); |
078e7b4a JB |
3551 | return tem; |
3552 | } | |
3553 | ||
3554 | static int | |
3555 | hash_string (ptr, len) | |
4b2dd274 | 3556 | const unsigned char *ptr; |
078e7b4a JB |
3557 | int len; |
3558 | { | |
4b2dd274 KR |
3559 | register const unsigned char *p = ptr; |
3560 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3561 | register unsigned char c; |
3562 | register int hash = 0; | |
3563 | ||
3564 | while (p != end) | |
3565 | { | |
3566 | c = *p++; | |
3567 | if (c >= 0140) c -= 40; | |
3568 | hash = ((hash<<3) + (hash>>28) + c); | |
3569 | } | |
3570 | return hash & 07777777777; | |
3571 | } | |
d007f5c8 | 3572 | \f |
078e7b4a JB |
3573 | void |
3574 | map_obarray (obarray, fn, arg) | |
3575 | Lisp_Object obarray; | |
d5b28a9d | 3576 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3577 | Lisp_Object arg; |
3578 | { | |
3579 | register int i; | |
3580 | register Lisp_Object tail; | |
b7826503 | 3581 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3582 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3583 | { | |
3584 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3585 | if (SYMBOLP (tail)) |
078e7b4a JB |
3586 | while (1) |
3587 | { | |
3588 | (*fn) (tail, arg); | |
3589 | if (XSYMBOL (tail)->next == 0) | |
3590 | break; | |
1805de4f | 3591 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3592 | } |
3593 | } | |
3594 | } | |
3595 | ||
d5b28a9d | 3596 | void |
078e7b4a JB |
3597 | mapatoms_1 (sym, function) |
3598 | Lisp_Object sym, function; | |
3599 | { | |
3600 | call1 (function, sym); | |
3601 | } | |
3602 | ||
3603 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3604 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3605 | OBARRAY defaults to the value of `obarray'. */) | |
3606 | (function, obarray) | |
078e7b4a JB |
3607 | Lisp_Object function, obarray; |
3608 | { | |
265a9e55 | 3609 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3610 | obarray = check_obarray (obarray); |
3611 | ||
3612 | map_obarray (obarray, mapatoms_1, function); | |
3613 | return Qnil; | |
3614 | } | |
3615 | ||
5e88a39e | 3616 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3617 | |
3618 | void | |
3619 | init_obarray () | |
3620 | { | |
3621 | Lisp_Object oblength; | |
3622 | int hash; | |
3623 | Lisp_Object *tem; | |
3624 | ||
baf69866 | 3625 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3626 | |
491f16a2 | 3627 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3628 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3629 | initial_obarray = Vobarray; | |
3630 | staticpro (&initial_obarray); | |
3631 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3632 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3633 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3634 | |
078e7b4a JB |
3635 | /* These locals are to kludge around a pyramid compiler bug. */ |
3636 | hash = hash_string ("nil", 3); | |
3637 | /* Separate statement here to avoid VAXC bug. */ | |
3638 | hash %= OBARRAY_SIZE; | |
3639 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3640 | *tem = Qnil; | |
3641 | ||
491f16a2 | 3642 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3643 | XSYMBOL (Qnil)->function = Qunbound; |
3644 | XSYMBOL (Qunbound)->value = Qunbound; | |
3645 | XSYMBOL (Qunbound)->function = Qunbound; | |
3646 | ||
3647 | Qt = intern ("t"); | |
3648 | XSYMBOL (Qnil)->value = Qnil; | |
3649 | XSYMBOL (Qnil)->plist = Qnil; | |
3650 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3651 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3652 | |
3653 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3654 | Vpurify_flag = Qt; | |
3655 | ||
3656 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3657 | staticpro (&Qvariable_documentation); |
078e7b4a | 3658 | |
449fea39 | 3659 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3660 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3661 | } |
3662 | \f | |
3663 | void | |
3664 | defsubr (sname) | |
3665 | struct Lisp_Subr *sname; | |
3666 | { | |
3667 | Lisp_Object sym; | |
3668 | sym = intern (sname->symbol_name); | |
1805de4f | 3669 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3670 | } |
3671 | ||
3672 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3673 | void | |
3674 | defalias (sname, string) | |
3675 | struct Lisp_Subr *sname; | |
3676 | char *string; | |
3677 | { | |
3678 | Lisp_Object sym; | |
3679 | sym = intern (string); | |
1805de4f | 3680 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3681 | } |
3682 | #endif /* NOTDEF */ | |
3683 | ||
078e7b4a | 3684 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3685 | to a C variable of type int. Sample call: */ |
5de38842 | 3686 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3687 | void |
e9e00ff2 | 3688 | defvar_int (namestring, address) |
078e7b4a | 3689 | char *namestring; |
31ade731 | 3690 | EMACS_INT *address; |
078e7b4a | 3691 | { |
1a0f90f7 | 3692 | Lisp_Object sym, val; |
078e7b4a | 3693 | sym = intern (namestring); |
1a0f90f7 | 3694 | val = allocate_misc (); |
47e28b2c | 3695 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3696 | XINTFWD (val)->intvar = address; |
44c6c019 | 3697 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3698 | } |
3699 | ||
f0529b5b PJ |
3700 | /* Similar but define a variable whose value is t if address contains 1, |
3701 | nil if address contains 0 */ | |
078e7b4a | 3702 | void |
e9e00ff2 | 3703 | defvar_bool (namestring, address) |
078e7b4a JB |
3704 | char *namestring; |
3705 | int *address; | |
078e7b4a | 3706 | { |
1a0f90f7 | 3707 | Lisp_Object sym, val; |
078e7b4a | 3708 | sym = intern (namestring); |
1a0f90f7 | 3709 | val = allocate_misc (); |
47e28b2c | 3710 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3711 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3712 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3713 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3714 | } |
3715 | ||
1a0f90f7 KH |
3716 | /* Similar but define a variable whose value is the Lisp Object stored |
3717 | at address. Two versions: with and without gc-marking of the C | |
3718 | variable. The nopro version is used when that variable will be | |
3719 | gc-marked for some other reason, since marking the same slot twice | |
3720 | can cause trouble with strings. */ | |
078e7b4a | 3721 | void |
1a0f90f7 | 3722 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3723 | char *namestring; |
3724 | Lisp_Object *address; | |
078e7b4a | 3725 | { |
1a0f90f7 | 3726 | Lisp_Object sym, val; |
078e7b4a | 3727 | sym = intern (namestring); |
1a0f90f7 | 3728 | val = allocate_misc (); |
47e28b2c | 3729 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3730 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3731 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3732 | } |
3733 | ||
078e7b4a | 3734 | void |
1a0f90f7 | 3735 | defvar_lisp (namestring, address) |
078e7b4a JB |
3736 | char *namestring; |
3737 | Lisp_Object *address; | |
078e7b4a | 3738 | { |
1a0f90f7 KH |
3739 | defvar_lisp_nopro (namestring, address); |
3740 | staticpro (address); | |
078e7b4a JB |
3741 | } |
3742 | ||
078e7b4a | 3743 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3744 | the current buffer. address is the address of the slot in the buffer |
3745 | that is current now. */ | |
078e7b4a JB |
3746 | |
3747 | void | |
4360b0c6 | 3748 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3749 | char *namestring; |
3750 | Lisp_Object *address; | |
4360b0c6 | 3751 | Lisp_Object type; |
078e7b4a JB |
3752 | char *doc; |
3753 | { | |
1a0f90f7 | 3754 | Lisp_Object sym, val; |
078e7b4a | 3755 | int offset; |
078e7b4a JB |
3756 | |
3757 | sym = intern (namestring); | |
1a0f90f7 | 3758 | val = allocate_misc (); |
078e7b4a JB |
3759 | offset = (char *)address - (char *)current_buffer; |
3760 | ||
47e28b2c | 3761 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3762 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3763 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3764 | PER_BUFFER_SYMBOL (offset) = sym; |
3765 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3766 | |
11fd416e | 3767 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3768 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3769 | slot of buffer_local_flags */ | |
3770 | abort (); | |
3771 | } | |
3772 | ||
950c215d KH |
3773 | |
3774 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3775 | at a particular offset in the current kboard object. */ |
950c215d KH |
3776 | |
3777 | void | |
4ac38690 | 3778 | defvar_kboard (namestring, offset) |
950c215d KH |
3779 | char *namestring; |
3780 | int offset; | |
3781 | { | |
3782 | Lisp_Object sym, val; | |
3783 | sym = intern (namestring); | |
3784 | val = allocate_misc (); | |
47e28b2c | 3785 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3786 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3787 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3788 | } |
078e7b4a | 3789 | \f |
11938f10 KH |
3790 | /* Record the value of load-path used at the start of dumping |
3791 | so we can see if the site changed it later during dumping. */ | |
3792 | static Lisp_Object dump_path; | |
3793 | ||
d5b28a9d | 3794 | void |
279499f0 | 3795 | init_lread () |
078e7b4a | 3796 | { |
46947372 | 3797 | char *normal; |
e73997a1 | 3798 | int turn_off_warning = 0; |
078e7b4a | 3799 | |
279499f0 | 3800 | /* Compute the default load-path. */ |
46947372 JB |
3801 | #ifdef CANNOT_DUMP |
3802 | normal = PATH_LOADSEARCH; | |
e065a56e | 3803 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3804 | #else |
3805 | if (NILP (Vpurify_flag)) | |
3806 | normal = PATH_LOADSEARCH; | |
279499f0 | 3807 | else |
46947372 | 3808 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3809 | |
46947372 JB |
3810 | /* In a dumped Emacs, we normally have to reset the value of |
3811 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3812 | uses ../lisp, instead of the path of the installed elisp | |
3813 | libraries. However, if it appears that Vload_path was changed | |
3814 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3815 | if (initialized) |
3816 | { | |
4746118a | 3817 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3818 | { |
3819 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3820 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3821 | { |
3ddff138 RS |
3822 | Lisp_Object tem, tem1, sitelisp; |
3823 | ||
3824 | /* Remove site-lisp dirs from path temporarily and store | |
3825 | them in sitelisp, then conc them on at the end so | |
3826 | they're always first in path. */ | |
3827 | sitelisp = Qnil; | |
3828 | while (1) | |
3829 | { | |
3830 | tem = Fcar (Vload_path); | |
3831 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3832 | tem, Qnil); | |
3833 | if (!NILP (tem1)) | |
3834 | { | |
3835 | Vload_path = Fcdr (Vload_path); | |
3836 | sitelisp = Fcons (tem, sitelisp); | |
3837 | } | |
3838 | else | |
3839 | break; | |
3840 | } | |
3841 | ||
74180aa4 | 3842 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3843 | installation dir, if it exists. */ |
74180aa4 RS |
3844 | tem = Fexpand_file_name (build_string ("lisp"), |
3845 | Vinstallation_directory); | |
3a3056e5 RS |
3846 | tem1 = Ffile_exists_p (tem); |
3847 | if (!NILP (tem1)) | |
3848 | { | |
3849 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3850 | { |
3851 | turn_off_warning = 1; | |
3ddff138 | 3852 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3853 | } |
3a3056e5 RS |
3854 | } |
3855 | else | |
3856 | /* That dir doesn't exist, so add the build-time | |
3857 | Lisp dirs instead. */ | |
3858 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3859 | |
9fbc0116 RS |
3860 | /* Add leim under the installation dir, if it exists. */ |
3861 | tem = Fexpand_file_name (build_string ("leim"), | |
3862 | Vinstallation_directory); | |
3863 | tem1 = Ffile_exists_p (tem); | |
3864 | if (!NILP (tem1)) | |
3865 | { | |
3866 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3867 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3868 | } |
3869 | ||
06b8b8bb | 3870 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
3871 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3872 | Vinstallation_directory); | |
3873 | tem1 = Ffile_exists_p (tem); | |
3874 | if (!NILP (tem1)) | |
3875 | { | |
3876 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3877 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3878 | } |
0f337465 RS |
3879 | |
3880 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3881 | and it is run from where it was built, add to load-path |
3882 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3883 | |
3884 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3885 | { | |
33046fc9 RS |
3886 | Lisp_Object tem2; |
3887 | ||
0f337465 RS |
3888 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3889 | Vinstallation_directory); | |
3890 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3891 | |
3892 | /* Don't be fooled if they moved the entire source tree | |
3893 | AFTER dumping Emacs. If the build directory is indeed | |
3894 | different from the source dir, src/Makefile.in and | |
3895 | src/Makefile will not be found together. */ | |
3896 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3897 | Vinstallation_directory); | |
3898 | tem2 = Ffile_exists_p (tem); | |
3899 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3900 | { |
3901 | tem = Fexpand_file_name (build_string ("lisp"), | |
3902 | Vsource_directory); | |
3903 | ||
3904 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3905 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3906 | |
9fbc0116 RS |
3907 | tem = Fexpand_file_name (build_string ("leim"), |
3908 | Vsource_directory); | |
3909 | ||
3910 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3911 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3912 | |
0f337465 RS |
3913 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3914 | Vsource_directory); | |
3915 | ||
3916 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3917 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3918 | } |
3919 | } | |
3ddff138 RS |
3920 | if (!NILP (sitelisp)) |
3921 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3922 | } |
3923 | } | |
4746118a JB |
3924 | } |
3925 | else | |
11938f10 | 3926 | { |
7b396c6c RS |
3927 | /* NORMAL refers to the lisp dir in the source directory. */ |
3928 | /* We used to add ../lisp at the front here, but | |
3929 | that caused trouble because it was copied from dump_path | |
06b8b8bb | 3930 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
3931 | It should be unnecessary. */ |
3932 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3933 | dump_path = Vload_path; |
3934 | } | |
46947372 | 3935 | #endif |
279499f0 | 3936 | |
536d6baa | 3937 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3938 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3939 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3940 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3941 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3942 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3943 | the "standard" paths may not exist and would be overridden by | |
3944 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3945 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3946 | |
078e7b4a | 3947 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3948 | if (!turn_off_warning) |
3949 | { | |
3950 | Lisp_Object path_tail; | |
078e7b4a | 3951 | |
e73997a1 RS |
3952 | for (path_tail = Vload_path; |
3953 | !NILP (path_tail); | |
c1d497be | 3954 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3955 | { |
3956 | Lisp_Object dirfile; | |
3957 | dirfile = Fcar (path_tail); | |
3958 | if (STRINGP (dirfile)) | |
3959 | { | |
3960 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3961 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3962 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3963 | XCAR (path_tail)); |
e73997a1 RS |
3964 | } |
3965 | } | |
3966 | } | |
536d6baa | 3967 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3968 | |
3969 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3970 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3971 | #ifndef CANNOT_DUMP |
46947372 JB |
3972 | if (NILP (Vpurify_flag) |
3973 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3974 | #endif |
279499f0 | 3975 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3976 | |
3977 | Vvalues = Qnil; | |
3978 | ||
078e7b4a | 3979 | load_in_progress = 0; |
4e53f562 | 3980 | Vload_file_name = Qnil; |
d2c6be7f RS |
3981 | |
3982 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3983 | |
3984 | Vstandard_input = Qt; | |
f74b0705 | 3985 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3986 | } |
3987 | ||
85496b8c | 3988 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
06b8b8bb | 3989 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 3990 | |
d5b28a9d | 3991 | void |
85496b8c RS |
3992 | dir_warning (format, dirname) |
3993 | char *format; | |
3994 | Lisp_Object dirname; | |
3995 | { | |
3996 | char *buffer | |
d5db4077 | 3997 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3998 | |
d5db4077 KR |
3999 | fprintf (stderr, format, SDATA (dirname)); |
4000 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4001 | /* Don't log the warning before we've initialized!! */ |
4002 | if (initialized) | |
4003 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4004 | } |
4005 | ||
078e7b4a | 4006 | void |
279499f0 | 4007 | syms_of_lread () |
078e7b4a JB |
4008 | { |
4009 | defsubr (&Sread); | |
4010 | defsubr (&Sread_from_string); | |
4011 | defsubr (&Sintern); | |
4012 | defsubr (&Sintern_soft); | |
d007f5c8 | 4013 | defsubr (&Sunintern); |
971a4293 | 4014 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4015 | defsubr (&Sload); |
228d4b1c | 4016 | defsubr (&Seval_buffer); |
078e7b4a JB |
4017 | defsubr (&Seval_region); |
4018 | defsubr (&Sread_char); | |
4019 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4020 | defsubr (&Sread_event); |
078e7b4a JB |
4021 | defsubr (&Sget_file_char); |
4022 | defsubr (&Smapatoms); | |
86d00812 | 4023 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
4024 | |
4025 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
4026 | doc: /* Symbol table for use by `intern' and `read'. |
4027 | It is a vector whose length ought to be prime for best results. | |
4028 | The vector's contents don't make sense if examined from Lisp programs; | |
4029 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
4030 | |
4031 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
4032 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4033 | Order is reverse chronological. */); | |
078e7b4a JB |
4034 | |
4035 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
4036 | doc: /* Stream for read to get input from. |
4037 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4038 | Vstandard_input = Qt; |
4039 | ||
abb13b09 CW |
4040 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4041 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4042 | ||
4043 | If this variable is a buffer, then only forms read from that buffer | |
4044 | will be added to `read-symbol-positions-list'. | |
4045 | If this variable is t, then all read forms will be added. | |
4046 | The effect of all other values other than nil are not currently | |
4047 | defined, although they may be in the future. | |
4048 | ||
4049 | The positions are relative to the last call to `read' or | |
4050 | `read-from-string'. It is probably a bad idea to set this variable at | |
4051 | the toplevel; bind it instead. */); | |
4052 | Vread_with_symbol_positions = Qnil; | |
4053 | ||
4054 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4055 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4056 | This variable is modified during calls to `read' or |
4057 | `read-from-string', but only when `read-with-symbol-positions' is | |
4058 | non-nil. | |
4059 | ||
4060 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4061 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4062 | symbol from the position where `read' or `read-from-string' started. |
4063 | ||
4064 | Note that a symbol will appear multiple times in this list, if it was | |
4065 | read multiple times. The list is in the same order as the symbols | |
4066 | were read in. */); | |
177c0ea7 | 4067 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4068 | |
078e7b4a | 4069 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4070 | doc: /* *List of directories to search for files to load. |
4071 | Each element is a string (directory name) or nil (try default directory). | |
4072 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4073 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4074 | |
e61b9b87 | 4075 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4076 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4077 | This list should not include the empty string. | |
4078 | `load' and related functions try to append these suffixes, in order, | |
4079 | to the specified file name if a Lisp suffix is allowed or required. */); | |
e61b9b87 SM |
4080 | Vload_suffixes = Fcons (build_string (".elc"), |
4081 | Fcons (build_string (".el"), Qnil)); | |
971a4293 LT |
4082 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4083 | doc: /* List of suffixes that indicate representations of \ | |
4084 | the same file. | |
4085 | This list should normally start with the empty string. | |
4086 | ||
4087 | Enabling Auto Compression mode appends the suffixes in | |
4088 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4089 | mode removes them again. `load' and related functions use this list to | |
4090 | determine whether they should look for compressed versions of a file | |
4091 | and, if so, which suffixes they should try to append to the file name | |
4092 | in order to do so. However, if you want to customize which suffixes | |
4093 | the loading functions recognize as compression suffixes, you should | |
4094 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
ddb716ef | 4095 | /* We don't use empty_string because it's not initialized yet. */ |
971a4293 | 4096 | Vload_file_rep_suffixes = Fcons (build_string (""), Qnil); |
e61b9b87 | 4097 | |
078e7b4a | 4098 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
e0f24100 | 4099 | doc: /* Non-nil if inside of `load'. */); |
078e7b4a JB |
4100 | |
4101 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4102 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4103 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4104 | ||
4105 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4106 | a symbol \(a feature name). | |
4107 | ||
4108 | When `load' is run and the file-name argument matches an element's | |
4109 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4110 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4111 | ||
4112 | An error in FORMS does not undo the load, but does prevent execution of | |
4113 | the rest of the FORMS. */); | |
078e7b4a JB |
4114 | Vafter_load_alist = Qnil; |
4115 | ||
ae321d28 | 4116 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 4117 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
4118 | Each alist element is a list that starts with a file name, |
4119 | except for one element (optional) that starts with nil and describes | |
4120 | definitions evaluated from buffers not visiting files. | |
6bb6da3e AM |
4121 | |
4122 | The file name is absolute and is the true file name (i.e. it doesn't | |
4123 | contain symbolic links) of the loaded file. | |
4124 | ||
1bc2cdb1 | 4125 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 4126 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
191c4353 JB |
4127 | `(defun . FUNCTION)', `(autoload . SYMBOL)', `(defface . SYMBOL)' |
4128 | and `(t . SYMBOL)'. An element `(t . SYMBOL)' precedes an entry | |
4129 | `(defun . FUNCTION)', and means that SYMBOL was an autoload before | |
4130 | this file redefined it as a function. | |
0fc213e9 | 4131 | |
b502a9a1 RS |
4132 | During preloading, the file name recorded is relative to the main Lisp |
4133 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4134 | Vload_history = Qnil; |
4135 | ||
20ea2964 | 4136 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4137 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4138 | Vload_file_name = Qnil; |
4139 | ||
4116ab9f | 4140 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4141 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4142 | If the file loaded had extension `.elc', and the corresponding source file |
4143 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4144 | by functions like `custom-save-all' which edit the init file. |
4145 | While Emacs loads and evaluates the init file, value is the real name | |
4146 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4147 | Vuser_init_file = Qnil; |
4148 | ||
8a1f1537 | 4149 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4150 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4151 | Vcurrent_load_list = Qnil; |
4152 | ||
84a15045 | 4153 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4154 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4155 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4156 | Vload_read_function = Qnil; |
4157 | ||
fe0e03f3 | 4158 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4159 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4160 | This function is for doing code conversion before reading the source file. |
4161 | If nil, loading is done without any code conversion. | |
4162 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4163 | FULLNAME is the full name of FILE. | |
4164 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4165 | Vload_source_file_function = Qnil; |
4166 | ||
b2a30870 | 4167 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4168 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4169 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4170 | load_force_doc_strings = 0; |
4171 | ||
94e554db | 4172 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4173 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4174 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4175 | and is not meant for users to change. */); | |
94e554db RS |
4176 | load_convert_to_unibyte = 0; |
4177 | ||
1521a8fa | 4178 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4179 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4180 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4181 | Vsource_directory |
4182 | = Fexpand_file_name (build_string ("../"), | |
4183 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4184 | ||
4b104c41 | 4185 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4186 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4187 | Vpreloaded_file_list = Qnil; |
4188 | ||
1ffcc3b1 | 4189 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4190 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4191 | Vbyte_boolean_vars = Qnil; |
4192 | ||
da84f340 | 4193 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4194 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4195 | Some versions of XEmacs use different byte codes than Emacs. These | |
4196 | incompatible byte codes can make Emacs crash when it tries to execute | |
4197 | them. */); | |
da84f340 GM |
4198 | load_dangerous_libraries = 0; |
4199 | ||
bb970e67 | 4200 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4201 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4202 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4203 | from the file, and matches them against this regular expression. | |
4204 | When the regular expression matches, the file is considered to be safe | |
4205 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4206 | Vbytecomp_version_regexp |
f2e7d5eb | 4207 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4208 | |
3f39f996 RS |
4209 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4210 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4211 | Veval_buffer_list = Qnil; | |
4212 | ||
5aa273b0 SM |
4213 | DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes, |
4214 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); | |
4215 | Vold_style_backquotes = Qnil; | |
1d064697 SM |
4216 | Qold_style_backquotes = intern ("old-style-backquotes"); |
4217 | staticpro (&Qold_style_backquotes); | |
5aa273b0 | 4218 | |
a90ba1e2 KH |
4219 | /* Vsource_directory was initialized in init_lread. */ |
4220 | ||
d2c6be7f RS |
4221 | load_descriptor_list = Qnil; |
4222 | staticpro (&load_descriptor_list); | |
4223 | ||
8a1f1537 RS |
4224 | Qcurrent_load_list = intern ("current-load-list"); |
4225 | staticpro (&Qcurrent_load_list); | |
4226 | ||
078e7b4a JB |
4227 | Qstandard_input = intern ("standard-input"); |
4228 | staticpro (&Qstandard_input); | |
4229 | ||
4230 | Qread_char = intern ("read-char"); | |
4231 | staticpro (&Qread_char); | |
4232 | ||
4233 | Qget_file_char = intern ("get-file-char"); | |
4234 | staticpro (&Qget_file_char); | |
7bd279cd | 4235 | |
17634846 RS |
4236 | Qbackquote = intern ("`"); |
4237 | staticpro (&Qbackquote); | |
4238 | Qcomma = intern (","); | |
4239 | staticpro (&Qcomma); | |
4240 | Qcomma_at = intern (",@"); | |
4241 | staticpro (&Qcomma_at); | |
4242 | Qcomma_dot = intern (",."); | |
4243 | staticpro (&Qcomma_dot); | |
4244 | ||
74549846 RS |
4245 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4246 | staticpro (&Qinhibit_file_name_operation); | |
4247 | ||
7bd279cd RS |
4248 | Qascii_character = intern ("ascii-character"); |
4249 | staticpro (&Qascii_character); | |
c2225d00 | 4250 | |
2b6cae0c RS |
4251 | Qfunction = intern ("function"); |
4252 | staticpro (&Qfunction); | |
4253 | ||
c2225d00 RS |
4254 | Qload = intern ("load"); |
4255 | staticpro (&Qload); | |
20ea2964 RS |
4256 | |
4257 | Qload_file_name = intern ("load-file-name"); | |
4258 | staticpro (&Qload_file_name); | |
11938f10 | 4259 | |
3f39f996 RS |
4260 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4261 | staticpro (&Qeval_buffer_list); | |
4262 | ||
6bb6da3e AM |
4263 | Qfile_truename = intern ("file-truename"); |
4264 | staticpro (&Qfile_truename) ; | |
4265 | ||
4266 | Qdo_after_load_evaluation = intern ("do-after-load-evaluation"); | |
4267 | staticpro (&Qdo_after_load_evaluation) ; | |
4268 | ||
11938f10 | 4269 | staticpro (&dump_path); |
4ad679f9 EN |
4270 | |
4271 | staticpro (&read_objects); | |
4272 | read_objects = Qnil; | |
9e062b6c | 4273 | staticpro (&seen_list); |
f153db13 | 4274 | seen_list = Qnil; |
177c0ea7 | 4275 | |
7ee3bd7b GM |
4276 | Vloads_in_progress = Qnil; |
4277 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4278 | } |
ab5796a9 MB |
4279 | |
4280 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4281 | (do not change this comment) */ |