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, | |
4 | 2005 Free Software Foundation, Inc. | |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
46947372 | 10 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
078e7b4a JB |
22 | |
23 | ||
98280b76 | 24 | #include <config.h> |
078e7b4a JB |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/file.h> | |
2c1b5dbe | 29 | #include <errno.h> |
b3e6f69c | 30 | #include <setjmp.h> |
078e7b4a | 31 | #include "lisp.h" |
95384e1e | 32 | #include "intervals.h" |
078e7b4a | 33 | #include "buffer.h" |
fe0e03f3 | 34 | #include "charset.h" |
57bda87a | 35 | #include <epaths.h> |
078e7b4a | 36 | #include "commands.h" |
e37c0805 | 37 | #include "keyboard.h" |
428a555e | 38 | #include "frame.h" |
7bd279cd | 39 | #include "termhooks.h" |
eb191db2 | 40 | #include "coding.h" |
078e7b4a JB |
41 | |
42 | #ifdef lint | |
43 | #include <sys/inode.h> | |
44 | #endif /* lint */ | |
45 | ||
79051982 RS |
46 | #ifdef MSDOS |
47 | #if __DJGPP__ < 2 | |
48 | #include <unistd.h> /* to get X_OK */ | |
49 | #endif | |
50 | #include "msdos.h" | |
51 | #endif | |
52 | ||
c1a2f60a AS |
53 | #ifdef HAVE_UNISTD_H |
54 | #include <unistd.h> | |
55 | #endif | |
56 | ||
078e7b4a JB |
57 | #ifndef X_OK |
58 | #define X_OK 01 | |
59 | #endif | |
60 | ||
078e7b4a | 61 | #include <math.h> |
078e7b4a | 62 | |
c011e9a5 RS |
63 | #ifdef HAVE_SETLOCALE |
64 | #include <locale.h> | |
65 | #endif /* HAVE_SETLOCALE */ | |
66 | ||
bcdec28b DL |
67 | #ifdef HAVE_FCNTL_H |
68 | #include <fcntl.h> | |
69 | #endif | |
f7d279f0 RS |
70 | #ifndef O_RDONLY |
71 | #define O_RDONLY 0 | |
72 | #endif | |
73 | ||
79cf851c | 74 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
75 | #define file_offset off_t |
76 | #define file_tell ftello | |
77 | #else | |
78 | #define file_offset long | |
79 | #define file_tell ftell | |
80 | #endif | |
81 | ||
03695ace | 82 | #ifndef USE_CRT_DLL |
2c1b5dbe | 83 | extern int errno; |
03695ace | 84 | #endif |
2c1b5dbe | 85 | |
8a1f1537 | 86 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 87 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 88 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 89 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 90 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 91 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
7bd279cd RS |
92 | |
93 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 94 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 95 | |
9942fa0c | 96 | /* non-zero iff 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 SM |
102 | /* Search path and suffixes for files to be loaded. */ |
103 | Lisp_Object Vload_path, Vload_suffixes, default_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 | ||
fe0e03f3 KH |
136 | /* Function to use for loading an Emacs lisp source file (not |
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; | |
7ee3bd7b GM |
196 | |
197 | /* A list of file names for files being loaded in Fload. Used to | |
198 | check for recursive loads. */ | |
199 | ||
9942fa0c | 200 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 201 | |
550a625e GM |
202 | /* Non-zero means load dangerous compiled Lisp files. */ |
203 | ||
204 | int load_dangerous_libraries; | |
205 | ||
206 | /* A regular expression used to detect files compiled with Emacs. */ | |
207 | ||
208 | static Lisp_Object Vbytecomp_version_regexp; | |
209 | ||
a742d646 | 210 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 211 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 212 | Lisp_Object (*) (), int, |
4c03c46d | 213 | Lisp_Object, Lisp_Object, |
550a625e GM |
214 | Lisp_Object, Lisp_Object)); |
215 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
216 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
217 | ||
078e7b4a JB |
218 | \f |
219 | /* Handle unreading and rereading of characters. | |
220 | Write READCHAR to read a character, | |
fe0e03f3 KH |
221 | UNREAD(c) to unread c to be read again. |
222 | ||
abb13b09 CW |
223 | The READCHAR and UNREAD macros are meant for reading/unreading a |
224 | byte code; they do not handle multibyte characters. The caller | |
225 | should manage them if necessary. | |
177c0ea7 | 226 | |
abb13b09 CW |
227 | [ Actually that seems to be a lie; READCHAR will definitely read |
228 | multibyte characters from buffer sources, at least. Is the | |
229 | comment just out of date? | |
230 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 231 | */ |
078e7b4a JB |
232 | |
233 | #define READCHAR readchar (readcharfun) | |
234 | #define UNREAD(c) unreadchar (readcharfun, c) | |
235 | ||
236 | static int | |
237 | readchar (readcharfun) | |
238 | Lisp_Object readcharfun; | |
239 | { | |
240 | Lisp_Object tem; | |
95384e1e | 241 | register int c; |
078e7b4a | 242 | |
abb13b09 | 243 | readchar_count++; |
177c0ea7 | 244 | |
cfff016d | 245 | if (BUFFERP (readcharfun)) |
078e7b4a | 246 | { |
bed23cb2 | 247 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 248 | |
bed23cb2 RS |
249 | int pt_byte = BUF_PT_BYTE (inbuffer); |
250 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 251 | |
00a9a935 RS |
252 | if (readchar_backlog > 0) |
253 | /* We get the address of the byte just passed, | |
254 | which is the last byte of the character. | |
255 | The other bytes in this character are consecutive with it, | |
256 | because the gap can't be in the middle of a character. */ | |
257 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
258 | - --readchar_backlog); | |
259 | ||
bed23cb2 RS |
260 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
261 | return -1; | |
078e7b4a | 262 | |
00a9a935 RS |
263 | readchar_backlog = -1; |
264 | ||
bed23cb2 RS |
265 | if (! NILP (inbuffer->enable_multibyte_characters)) |
266 | { | |
00a9a935 | 267 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
268 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
269 | BUF_INC_POS (inbuffer, pt_byte); | |
270 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
271 | } | |
272 | else | |
273 | { | |
274 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
275 | pt_byte++; | |
6f7f43d5 | 276 | } |
bed23cb2 | 277 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 278 | |
bed23cb2 | 279 | return c; |
078e7b4a | 280 | } |
cfff016d | 281 | if (MARKERP (readcharfun)) |
078e7b4a | 282 | { |
bed23cb2 | 283 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 284 | |
bed23cb2 RS |
285 | int bytepos = marker_byte_position (readcharfun); |
286 | int orig_bytepos = bytepos; | |
6f7f43d5 | 287 | |
00a9a935 RS |
288 | if (readchar_backlog > 0) |
289 | /* We get the address of the byte just passed, | |
290 | which is the last byte of the character. | |
291 | The other bytes in this character are consecutive with it, | |
292 | because the gap can't be in the middle of a character. */ | |
293 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
294 | - --readchar_backlog); | |
295 | ||
bed23cb2 RS |
296 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
297 | return -1; | |
6f7f43d5 | 298 | |
00a9a935 RS |
299 | readchar_backlog = -1; |
300 | ||
bed23cb2 RS |
301 | if (! NILP (inbuffer->enable_multibyte_characters)) |
302 | { | |
00a9a935 | 303 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
304 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
305 | BUF_INC_POS (inbuffer, bytepos); | |
306 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
307 | } | |
308 | else | |
309 | { | |
310 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
311 | bytepos++; | |
6f7f43d5 RS |
312 | } |
313 | ||
bed23cb2 RS |
314 | XMARKER (readcharfun)->bytepos = bytepos; |
315 | XMARKER (readcharfun)->charpos++; | |
316 | ||
317 | return c; | |
078e7b4a | 318 | } |
ad0153e4 RS |
319 | |
320 | if (EQ (readcharfun, Qlambda)) | |
321 | return read_bytecode_char (0); | |
322 | ||
078e7b4a | 323 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
324 | { |
325 | c = getc (instream); | |
326 | #ifdef EINTR | |
327 | /* Interrupted reads have been observed while reading over the network */ | |
328 | while (c == EOF && ferror (instream) && errno == EINTR) | |
329 | { | |
495bf630 | 330 | QUIT; |
2c1b5dbe KH |
331 | clearerr (instream); |
332 | c = getc (instream); | |
333 | } | |
334 | #endif | |
335 | return c; | |
336 | } | |
078e7b4a | 337 | |
cfff016d | 338 | if (STRINGP (readcharfun)) |
078e7b4a | 339 | { |
bed23cb2 | 340 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 341 | c = -1; |
f0354c03 | 342 | else |
bed23cb2 RS |
343 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
344 | read_from_string_index, | |
345 | read_from_string_index_byte); | |
6f7f43d5 | 346 | |
078e7b4a JB |
347 | return c; |
348 | } | |
349 | ||
350 | tem = call0 (readcharfun); | |
351 | ||
265a9e55 | 352 | if (NILP (tem)) |
078e7b4a JB |
353 | return -1; |
354 | return XINT (tem); | |
355 | } | |
356 | ||
357 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
358 | If the stream is a user function, call it with the char as argument. */ | |
359 | ||
360 | static void | |
361 | unreadchar (readcharfun, c) | |
362 | Lisp_Object readcharfun; | |
363 | int c; | |
364 | { | |
abb13b09 | 365 | readchar_count--; |
92fddec9 KH |
366 | if (c == -1) |
367 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
368 | since readchar didn't advance it when we read it. */ | |
369 | ; | |
cfff016d | 370 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 371 | { |
bed23cb2 RS |
372 | struct buffer *b = XBUFFER (readcharfun); |
373 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 374 | |
00a9a935 RS |
375 | if (readchar_backlog >= 0) |
376 | readchar_backlog++; | |
bed23cb2 | 377 | else |
00a9a935 RS |
378 | { |
379 | BUF_PT (b)--; | |
380 | if (! NILP (b->enable_multibyte_characters)) | |
381 | BUF_DEC_POS (b, bytepos); | |
382 | else | |
383 | bytepos--; | |
d7760ca9 | 384 | |
00a9a935 RS |
385 | BUF_PT_BYTE (b) = bytepos; |
386 | } | |
d7760ca9 | 387 | } |
cfff016d | 388 | else if (MARKERP (readcharfun)) |
d7760ca9 | 389 | { |
bed23cb2 RS |
390 | struct buffer *b = XMARKER (readcharfun)->buffer; |
391 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 392 | |
00a9a935 RS |
393 | if (readchar_backlog >= 0) |
394 | readchar_backlog++; | |
bed23cb2 | 395 | else |
00a9a935 RS |
396 | { |
397 | XMARKER (readcharfun)->charpos--; | |
398 | if (! NILP (b->enable_multibyte_characters)) | |
399 | BUF_DEC_POS (b, bytepos); | |
400 | else | |
401 | bytepos--; | |
d7760ca9 | 402 | |
00a9a935 RS |
403 | XMARKER (readcharfun)->bytepos = bytepos; |
404 | } | |
d7760ca9 | 405 | } |
cfff016d | 406 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
407 | { |
408 | read_from_string_index--; | |
409 | read_from_string_index_byte | |
410 | = string_char_to_byte (readcharfun, read_from_string_index); | |
411 | } | |
ad0153e4 RS |
412 | else if (EQ (readcharfun, Qlambda)) |
413 | read_bytecode_char (1); | |
078e7b4a JB |
414 | else if (EQ (readcharfun, Qget_file_char)) |
415 | ungetc (c, instream); | |
416 | else | |
417 | call1 (readcharfun, make_number (c)); | |
418 | } | |
419 | ||
abb13b09 CW |
420 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
421 | Lisp_Object)); | |
422 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 423 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
424 | |
425 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
426 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
427 | static int read_multibyte P_ ((int, Lisp_Object)); | |
428 | ||
429 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
430 | Lisp_Object)); | |
431 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
432 | Lisp_Object)); | |
433 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 434 | |
078e7b4a | 435 | \f |
bed23cb2 | 436 | /* Get a character from the tty. */ |
078e7b4a | 437 | |
b3e6f69c | 438 | extern Lisp_Object read_char P_ ((int, int, Lisp_Object *, Lisp_Object, int *, jmp_buf *)); |
3d9b22be | 439 | |
f42be754 JB |
440 | /* Read input events until we get one that's acceptable for our purposes. |
441 | ||
442 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
443 | until we get a character we like, and then stuffed into | |
444 | unread_switch_frame. | |
445 | ||
446 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
447 | if the unmodified version of the symbol has a Qascii_character | |
448 | property, and use that character, if present. | |
449 | ||
450 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
451 | get isn't an ASCII character with modifiers. If it's zero but | |
452 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
453 | character. |
454 | ||
455 | If INPUT_METHOD is nonzero, we invoke the current input method | |
456 | if the character warrants that. */ | |
cc39bc38 | 457 | |
f42be754 | 458 | Lisp_Object |
bb49a192 RS |
459 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
460 | input_method) | |
461 | int no_switch_frame, ascii_required, error_nonascii, input_method; | |
f42be754 | 462 | { |
b3e6f69c KL |
463 | volatile register Lisp_Object val, delayed_switch_frame; |
464 | jmp_buf *volatile wrong_kboard_jmpbuf = alloca (sizeof (jmp_buf)); | |
153a17b7 | 465 | |
5dbf89bc | 466 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
467 | if (display_hourglass_p) |
468 | cancel_hourglass (); | |
5dbf89bc | 469 | #endif |
177c0ea7 | 470 | |
153a17b7 | 471 | delayed_switch_frame = Qnil; |
f42be754 JB |
472 | |
473 | /* Read until we get an acceptable event. */ | |
474 | retry: | |
b3e6f69c KL |
475 | setjmp (*wrong_kboard_jmpbuf); |
476 | ||
bb49a192 RS |
477 | val = read_char (0, 0, 0, |
478 | (input_method ? Qnil : Qt), | |
b3e6f69c KL |
479 | 0, wrong_kboard_jmpbuf); |
480 | ||
cfff016d | 481 | if (BUFFERP (val)) |
6c82d689 KH |
482 | goto retry; |
483 | ||
f42be754 | 484 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 485 | character. This is better than signaling an error just because |
f42be754 JB |
486 | the last characters were typed to a separate minibuffer frame, |
487 | for example. Eventually, some code which can deal with | |
488 | switch-frame events will read it and process it. */ | |
489 | if (no_switch_frame | |
490 | && EVENT_HAS_PARAMETERS (val) | |
491 | && EQ (EVENT_HEAD (val), Qswitch_frame)) | |
492 | { | |
493 | delayed_switch_frame = val; | |
494 | goto retry; | |
495 | } | |
496 | ||
497 | if (ascii_required) | |
498 | { | |
499 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 500 | if (SYMBOLP (val)) |
f42be754 | 501 | { |
95384e1e | 502 | Lisp_Object tem, tem1; |
f42be754 JB |
503 | tem = Fget (val, Qevent_symbol_element_mask); |
504 | if (!NILP (tem)) | |
505 | { | |
506 | tem1 = Fget (Fcar (tem), Qascii_character); | |
507 | /* Merge this symbol's modifier bits | |
508 | with the ASCII equivalent of its basic code. */ | |
509 | if (!NILP (tem1)) | |
baf69866 | 510 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
511 | } |
512 | } | |
177c0ea7 | 513 | |
f42be754 | 514 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 515 | if (!INTEGERP (val)) |
f42be754 JB |
516 | { |
517 | if (error_nonascii) | |
518 | { | |
1ec84625 | 519 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
520 | error ("Non-character input-event"); |
521 | } | |
522 | else | |
523 | goto retry; | |
524 | } | |
525 | } | |
526 | ||
527 | if (! NILP (delayed_switch_frame)) | |
528 | unread_switch_frame = delayed_switch_frame; | |
529 | ||
67868d27 PJ |
530 | #if 0 |
531 | ||
5dbf89bc | 532 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
533 | if (display_hourglass_p) |
534 | start_hourglass (); | |
5dbf89bc | 535 | #endif |
67868d27 PJ |
536 | |
537 | #endif | |
538 | ||
f42be754 | 539 | return val; |
f42be754 JB |
540 | } |
541 | ||
bb49a192 | 542 | DEFUN ("read-char", Fread_char, Sread_char, 0, 2, 0, |
5de38842 PJ |
543 | doc: /* Read a character from the command input (keyboard or macro). |
544 | It is returned as a number. | |
545 | If the user generates an event which is not a character (i.e. a mouse | |
546 | click or function key event), `read-char' signals an error. As an | |
547 | exception, switch-frame events are put off until non-ASCII events can | |
548 | be read. | |
549 | If you want to read non-character events, or ignore them, call | |
550 | `read-event' or `read-char-exclusive' instead. | |
551 | ||
552 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
553 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
554 | input method is turned on in the current buffer, that input method | |
555 | is used for reading a character. */) | |
556 | (prompt, inherit_input_method) | |
fc351d2f | 557 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 558 | { |
bb49a192 RS |
559 | if (! NILP (prompt)) |
560 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 561 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method)); |
078e7b4a JB |
562 | } |
563 | ||
bb49a192 | 564 | DEFUN ("read-event", Fread_event, Sread_event, 0, 2, 0, |
5de38842 PJ |
565 | doc: /* Read an event object from the input stream. |
566 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
567 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
568 | input method is turned on in the current buffer, that input method | |
569 | is used for reading a character. */) | |
570 | (prompt, inherit_input_method) | |
fc351d2f | 571 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 572 | { |
bb49a192 RS |
573 | if (! NILP (prompt)) |
574 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 575 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method)); |
078e7b4a JB |
576 | } |
577 | ||
bb49a192 | 578 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 2, 0, |
5de38842 PJ |
579 | doc: /* Read a character from the command input (keyboard or macro). |
580 | It is returned as a number. Non-character events are ignored. | |
581 | ||
582 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
583 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
584 | input method is turned on in the current buffer, that input method | |
585 | is used for reading a character. */) | |
586 | (prompt, inherit_input_method) | |
fc351d2f | 587 | Lisp_Object prompt, inherit_input_method; |
078e7b4a | 588 | { |
bb49a192 RS |
589 | if (! NILP (prompt)) |
590 | message_with_string ("%s", prompt, 0); | |
fc351d2f | 591 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method)); |
078e7b4a | 592 | } |
078e7b4a JB |
593 | |
594 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
595 | doc: /* Don't use this yourself. */) |
596 | () | |
078e7b4a JB |
597 | { |
598 | register Lisp_Object val; | |
1805de4f | 599 | XSETINT (val, getc (instream)); |
078e7b4a JB |
600 | return val; |
601 | } | |
da84f340 GM |
602 | |
603 | ||
550a625e | 604 | \f |
da84f340 GM |
605 | /* Value is non-zero if the file asswociated with file descriptor FD |
606 | is a compiled Lisp file that's safe to load. Only files compiled | |
607 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
608 | to a crash in Fbyte_code because of an incompatible change in the | |
609 | byte compiler. */ | |
610 | ||
611 | static int | |
612 | safe_to_load_p (fd) | |
613 | int fd; | |
614 | { | |
615 | char buf[512]; | |
616 | int nbytes, i; | |
617 | int safe_p = 1; | |
618 | ||
619 | /* Read the first few bytes from the file, and look for a line | |
620 | specifying the byte compiler version used. */ | |
621 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
622 | if (nbytes > 0) | |
623 | { | |
624 | buf[nbytes] = '\0'; | |
625 | ||
626 | /* Skip to the next newline, skipping over the initial `ELC' | |
627 | with NUL bytes following it. */ | |
628 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
629 | ; | |
630 | ||
631 | if (i < nbytes | |
632 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
633 | buf + i) < 0) | |
634 | safe_p = 0; | |
635 | } | |
636 | ||
637 | lseek (fd, 0, SEEK_SET); | |
638 | return safe_p; | |
639 | } | |
640 | ||
641 | ||
7ee3bd7b GM |
642 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
643 | after loading a file successfully. */ | |
644 | ||
645 | static Lisp_Object | |
646 | record_load_unwind (old) | |
647 | Lisp_Object old; | |
648 | { | |
649 | return Vloads_in_progress = old; | |
650 | } | |
651 | ||
164c8bfe RS |
652 | /* This handler function is used via internal_condition_case_1. */ |
653 | ||
654 | static Lisp_Object | |
655 | load_error_handler (data) | |
656 | Lisp_Object data; | |
657 | { | |
658 | return Qnil; | |
659 | } | |
7ee3bd7b | 660 | |
f0a50954 | 661 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
662 | doc: /* Execute a file of Lisp code named FILE. |
663 | First try FILE with `.elc' appended, then try with `.el', | |
d77b70e5 MR |
664 | then try FILE unmodified (the exact suffixes are determined by |
665 | `load-suffixes'). Environment variable references in FILE | |
5de38842 PJ |
666 | are replaced with their values by calling `substitute-in-file-name'. |
667 | This function searches the directories in `load-path'. | |
668 | If optional second arg NOERROR is non-nil, | |
669 | report no error if FILE doesn't exist. | |
670 | Print messages at start and end of loading unless | |
671 | optional third arg NOMESSAGE is non-nil. | |
672 | If optional fourth arg NOSUFFIX is non-nil, don't try adding | |
673 | suffixes `.elc' or `.el' to the specified name FILE. | |
674 | If optional fifth arg MUST-SUFFIX is non-nil, insist on | |
675 | the suffix `.elc' or `.el'; don't accept just FILE unless | |
676 | it ends in one of those suffixes or includes a directory name. | |
0fc213e9 RS |
677 | |
678 | Loading a file records its definitions, and its `provide' and | |
679 | `require' calls, in an element of `load-history' whose | |
680 | car is the file name loaded. See `load-history'. | |
681 | ||
5de38842 PJ |
682 | Return t if file exists. */) |
683 | (file, noerror, nomessage, nosuffix, must_suffix) | |
f0a50954 | 684 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
685 | { |
686 | register FILE *stream; | |
687 | register int fd = -1; | |
aed13378 | 688 | int count = SPECPDL_INDEX (); |
078e7b4a | 689 | Lisp_Object temp; |
0fc213e9 | 690 | struct gcpro gcpro1, gcpro2; |
eb191db2 | 691 | Lisp_Object found, efound; |
04fc68e7 RS |
692 | /* 1 means we printed the ".el is newer" message. */ |
693 | int newer = 0; | |
694 | /* 1 means we are loading a compiled file. */ | |
695 | int compiled = 0; | |
c2225d00 | 696 | Lisp_Object handler; |
456c67a4 | 697 | int safe_p = 1; |
229ba775 | 698 | char *fmode = "r"; |
317073d5 | 699 | #ifdef DOS_NT |
229ba775 | 700 | fmode = "rt"; |
317073d5 | 701 | #endif /* DOS_NT */ |
078e7b4a | 702 | |
b7826503 | 703 | CHECK_STRING (file); |
078e7b4a | 704 | |
c2225d00 | 705 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
706 | /* This shouldn't be necessary any more now that `openp' handles it right. |
707 | handler = Ffind_file_name_handler (file, Qload); | |
708 | if (!NILP (handler)) | |
709 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 710 | |
07a0bda3 RS |
711 | /* Do this after the handler to avoid |
712 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
713 | (Below here, we care only whether they are nil or not.) |
714 | The presence of this call is the result of a historical accident: | |
715 | it used to be in every file-operations and when it got removed | |
716 | everywhere, it accidentally stayed here. Since then, enough people | |
717 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
718 | that it seemed risky to remove. */ | |
164c8bfe RS |
719 | if (! NILP (noerror)) |
720 | { | |
721 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
722 | Qt, load_error_handler); | |
723 | if (NILP (file)) | |
724 | return Qnil; | |
725 | } | |
726 | else | |
727 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 728 | |
07a0bda3 | 729 | |
078e7b4a JB |
730 | /* Avoid weird lossage with null string as arg, |
731 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 732 | if (SCHARS (file) > 0) |
078e7b4a | 733 | { |
d5db4077 | 734 | int size = SBYTES (file); |
e61b9b87 | 735 | Lisp_Object tmp[2]; |
211f7dcd | 736 | |
0fc213e9 RS |
737 | found = Qnil; |
738 | GCPRO2 (file, found); | |
211f7dcd RS |
739 | |
740 | if (! NILP (must_suffix)) | |
741 | { | |
742 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
743 | if (size > 3 | |
d5db4077 | 744 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
745 | must_suffix = Qnil; |
746 | else if (size > 4 | |
d5db4077 | 747 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
748 | must_suffix = Qnil; |
749 | /* Don't insist on adding a suffix | |
750 | if the argument includes a directory name. */ | |
751 | else if (! NILP (Ffile_name_directory (file))) | |
752 | must_suffix = Qnil; | |
753 | } | |
754 | ||
f0a50954 | 755 | fd = openp (Vload_path, file, |
e61b9b87 SM |
756 | (!NILP (nosuffix) ? Qnil |
757 | : !NILP (must_suffix) ? Vload_suffixes | |
758 | : Fappend (2, (tmp[0] = Vload_suffixes, | |
759 | tmp[1] = default_suffixes, | |
760 | tmp))), | |
86d00812 | 761 | &found, Qnil); |
5a6e5452 | 762 | UNGCPRO; |
078e7b4a JB |
763 | } |
764 | ||
96dc0f4e | 765 | if (fd == -1) |
078e7b4a | 766 | { |
265a9e55 | 767 | if (NILP (noerror)) |
164c8bfe RS |
768 | Fsignal (Qfile_error, Fcons (build_string ("Cannot open load file"), |
769 | Fcons (file, Qnil))); | |
078e7b4a JB |
770 | else |
771 | return Qnil; | |
772 | } | |
773 | ||
ba0d1195 | 774 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
775 | if (EQ (Qt, Vuser_init_file)) |
776 | Vuser_init_file = found; | |
777 | ||
96dc0f4e MB |
778 | /* If FD is -2, that means openp found a magic file. */ |
779 | if (fd == -2) | |
74549846 | 780 | { |
5e24a1f7 KH |
781 | if (NILP (Fequal (found, file))) |
782 | /* If FOUND is a different file name from FILE, | |
783 | find its handler even if we have already inhibited | |
784 | the `load' operation on FILE. */ | |
785 | handler = Ffind_file_name_handler (found, Qt); | |
786 | else | |
787 | handler = Ffind_file_name_handler (found, Qload); | |
788 | if (! NILP (handler)) | |
789 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
790 | } |
791 | ||
550a625e GM |
792 | /* Check if we're stuck in a recursive load cycle. |
793 | ||
794 | 2000-09-21: It's not possible to just check for the file loaded | |
795 | being a member of Vloads_in_progress. This fails because of the | |
796 | way the byte compiler currently works; `provide's are not | |
797 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
798 | leads to a certain amount of ``normal'' recursion. | |
799 | ||
800 | Also, just loading a file recursively is not always an error in | |
801 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
802 | { |
803 | int count = 0; | |
804 | Lisp_Object tem; | |
805 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
806 | if (!NILP (Fequal (found, XCAR (tem)))) | |
807 | count++; | |
808 | if (count > 3) | |
809 | Fsignal (Qerror, Fcons (build_string ("Recursive load"), | |
810 | Fcons (found, Vloads_in_progress))); | |
811 | record_unwind_protect (record_load_unwind, Vloads_in_progress); | |
812 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
813 | } | |
7ee3bd7b | 814 | |
a1c89c0a | 815 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
816 | ".elc", 4)) |
817 | /* Load .elc files directly, but not when they are | |
818 | remote and have no handler! */ | |
078e7b4a | 819 | { |
96dc0f4e | 820 | if (fd != -2) |
da84f340 | 821 | { |
96dc0f4e MB |
822 | struct stat s1, s2; |
823 | int result; | |
da84f340 | 824 | |
0fc213e9 RS |
825 | GCPRO2 (file, found); |
826 | ||
96dc0f4e MB |
827 | if (!safe_to_load_p (fd)) |
828 | { | |
829 | safe_p = 0; | |
830 | if (!load_dangerous_libraries) | |
e63304b7 DL |
831 | { |
832 | if (fd >= 0) | |
833 | emacs_close (fd); | |
834 | error ("File `%s' was not compiled in Emacs", | |
835 | SDATA (found)); | |
836 | } | |
96dc0f4e MB |
837 | else if (!NILP (nomessage)) |
838 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
839 | } | |
04fc68e7 | 840 | |
96dc0f4e MB |
841 | compiled = 1; |
842 | ||
eb191db2 EZ |
843 | efound = ENCODE_FILE (found); |
844 | ||
26fbf20b | 845 | #ifdef DOS_NT |
96dc0f4e | 846 | fmode = "rb"; |
26fbf20b | 847 | #endif /* DOS_NT */ |
d5db4077 | 848 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 849 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 850 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 851 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 852 | |
96dc0f4e MB |
853 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
854 | { | |
855 | /* Make the progress messages mention that source is newer. */ | |
856 | newer = 1; | |
04fc68e7 | 857 | |
96dc0f4e | 858 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
859 | if (!NILP (nomessage)) |
860 | { | |
0fc213e9 RS |
861 | Lisp_Object msg_file; |
862 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 863 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 864 | msg_file, 1); |
714d8c39 | 865 | } |
96dc0f4e | 866 | } |
0fc213e9 | 867 | UNGCPRO; |
51ac6f83 | 868 | } |
078e7b4a | 869 | } |
fe0e03f3 KH |
870 | else |
871 | { | |
872 | /* We are loading a source file (*.el). */ | |
873 | if (!NILP (Vload_source_file_function)) | |
874 | { | |
7ee3bd7b | 875 | Lisp_Object val; |
96dc0f4e MB |
876 | |
877 | if (fd >= 0) | |
68c45bf0 | 878 | emacs_close (fd); |
7ee3bd7b GM |
879 | val = call4 (Vload_source_file_function, found, file, |
880 | NILP (noerror) ? Qnil : Qt, | |
881 | NILP (nomessage) ? Qnil : Qt); | |
882 | return unbind_to (count, val); | |
fe0e03f3 KH |
883 | } |
884 | } | |
078e7b4a | 885 | |
0fc213e9 RS |
886 | GCPRO2 (file, found); |
887 | ||
229ba775 | 888 | #ifdef WINDOWSNT |
68c45bf0 | 889 | emacs_close (fd); |
eb191db2 | 890 | efound = ENCODE_FILE (found); |
d5db4077 | 891 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
892 | #else /* not WINDOWSNT */ |
893 | stream = fdopen (fd, fmode); | |
894 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
895 | if (stream == 0) |
896 | { | |
68c45bf0 | 897 | emacs_close (fd); |
d5db4077 | 898 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
899 | } |
900 | ||
4b104c41 RS |
901 | if (! NILP (Vpurify_flag)) |
902 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
903 | ||
04fc68e7 RS |
904 | if (NILP (nomessage)) |
905 | { | |
da84f340 GM |
906 | if (!safe_p) |
907 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
908 | file, 1); | |
909 | else if (!compiled) | |
e28552a4 | 910 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 911 | else if (newer) |
e28552a4 RS |
912 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
913 | file, 1); | |
db5cae4b | 914 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 915 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 916 | } |
078e7b4a | 917 | |
c04d9e70 | 918 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 919 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 920 | specbind (Qload_file_name, found); |
74549846 | 921 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
922 | load_descriptor_list |
923 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 924 | load_in_progress++; |
0fc213e9 RS |
925 | readevalloop (Qget_file_char, stream, (! NILP (Vpurify_flag) ? file : found), |
926 | Feval, 0, Qnil, Qnil, Qnil, Qnil); | |
078e7b4a JB |
927 | unbind_to (count, Qnil); |
928 | ||
929 | /* Run any load-hooks for this file. */ | |
0745dce9 | 930 | temp = Fassoc (file, Vafter_load_alist); |
265a9e55 | 931 | if (!NILP (temp)) |
078e7b4a JB |
932 | Fprogn (Fcdr (temp)); |
933 | UNGCPRO; | |
934 | ||
b2a30870 RS |
935 | if (saved_doc_string) |
936 | free (saved_doc_string); | |
937 | saved_doc_string = 0; | |
938 | saved_doc_string_size = 0; | |
939 | ||
c15cfd1f | 940 | if (prev_saved_doc_string) |
3cb65b0e | 941 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
942 | prev_saved_doc_string = 0; |
943 | prev_saved_doc_string_size = 0; | |
944 | ||
265a9e55 | 945 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 946 | { |
da84f340 GM |
947 | if (!safe_p) |
948 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
949 | file, 1); | |
950 | else if (!compiled) | |
e28552a4 | 951 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 952 | else if (newer) |
e28552a4 RS |
953 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
954 | file, 1); | |
db5cae4b | 955 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 956 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 957 | } |
7ee3bd7b | 958 | |
11810d78 SM |
959 | if (!NILP (Fequal (build_string ("obsolete"), |
960 | Ffile_name_nondirectory | |
961 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
962 | message_with_string ("Package %s is obsolete", file, 1); | |
963 | ||
078e7b4a JB |
964 | return Qt; |
965 | } | |
966 | ||
967 | static Lisp_Object | |
ebfe97a2 KS |
968 | load_unwind (arg) /* used as unwind-protect function in load */ |
969 | Lisp_Object arg; | |
078e7b4a | 970 | { |
ebfe97a2 KS |
971 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
972 | if (stream != NULL) | |
973 | fclose (stream); | |
078e7b4a JB |
974 | if (--load_in_progress < 0) load_in_progress = 0; |
975 | return Qnil; | |
976 | } | |
977 | ||
d2c6be7f RS |
978 | static Lisp_Object |
979 | load_descriptor_unwind (oldlist) | |
980 | Lisp_Object oldlist; | |
981 | { | |
982 | load_descriptor_list = oldlist; | |
838abf56 | 983 | return Qnil; |
d2c6be7f RS |
984 | } |
985 | ||
986 | /* Close all descriptors in use for Floads. | |
987 | This is used when starting a subprocess. */ | |
988 | ||
989 | void | |
990 | close_load_descs () | |
991 | { | |
f3849f25 | 992 | #ifndef WINDOWSNT |
d2c6be7f | 993 | Lisp_Object tail; |
c1d497be | 994 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 995 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 996 | #endif |
d2c6be7f | 997 | } |
078e7b4a JB |
998 | \f |
999 | static int | |
1000 | complete_filename_p (pathname) | |
1001 | Lisp_Object pathname; | |
1002 | { | |
4b2dd274 | 1003 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1004 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1005 | || (SCHARS (pathname) > 2 |
317073d5 | 1006 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1007 | #ifdef ALTOS |
1008 | || *s == '@' | |
1009 | #endif | |
1010 | #ifdef VMS | |
1011 | || index (s, ':') | |
1012 | #endif /* VMS */ | |
1013 | ); | |
1014 | } | |
1015 | ||
86d00812 SM |
1016 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1017 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1018 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1019 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1020 | file name when searching. | |
1021 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1022 | PREDICATE can also be an integer to pass to the access(2) function, | |
1023 | in which case file-name-handlers are ignored. */) | |
1024 | (filename, path, suffixes, predicate) | |
1025 | Lisp_Object filename, path, suffixes, predicate; | |
1026 | { | |
1027 | Lisp_Object file; | |
1028 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1029 | if (NILP (predicate) && fd > 0) | |
1030 | close (fd); | |
1031 | return file; | |
1032 | } | |
1033 | ||
1034 | ||
078e7b4a JB |
1035 | /* Search for a file whose name is STR, looking in directories |
1036 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1037 | On success, returns a file descriptor. On failure, returns -1. |
1038 | ||
e61b9b87 SM |
1039 | SUFFIXES is a list of strings containing possible suffixes. |
1040 | The empty suffix is automatically added iff the list is empty. | |
1041 | ||
86d00812 SM |
1042 | PREDICATE non-nil means don't open the files, |
1043 | just look for one that satisfies the predicate. In this case, | |
1044 | returns 1 on success. The predicate can be a lisp function or | |
1045 | an integer to pass to `access' (in which case file-name-handlers | |
1046 | are ignored). | |
078e7b4a JB |
1047 | |
1048 | If STOREPTR is nonzero, it points to a slot where the name of | |
1049 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1050 | nil is stored there on failure. |
1051 | ||
96dc0f4e | 1052 | If the file we find is remote, return -2 |
86d00812 | 1053 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1054 | |
1055 | int | |
86d00812 | 1056 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1057 | Lisp_Object path, str; |
e61b9b87 | 1058 | Lisp_Object suffixes; |
078e7b4a | 1059 | Lisp_Object *storeptr; |
86d00812 | 1060 | Lisp_Object predicate; |
078e7b4a JB |
1061 | { |
1062 | register int fd; | |
1063 | int fn_size = 100; | |
1064 | char buf[100]; | |
1065 | register char *fn = buf; | |
1066 | int absolute = 0; | |
1067 | int want_size; | |
74549846 | 1068 | Lisp_Object filename; |
078e7b4a | 1069 | struct stat st; |
eb191db2 EZ |
1070 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1071 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1072 | int max_suffix_len = 0; |
1073 | ||
6f8eafd1 SM |
1074 | CHECK_STRING (str); |
1075 | ||
e61b9b87 SM |
1076 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1077 | { | |
f5df591a | 1078 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1079 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1080 | SBYTES (XCAR (tail))); |
e61b9b87 | 1081 | } |
078e7b4a | 1082 | |
990ff03c | 1083 | string = filename = Qnil; |
eb191db2 EZ |
1084 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1085 | ||
078e7b4a JB |
1086 | if (storeptr) |
1087 | *storeptr = Qnil; | |
1088 | ||
1089 | if (complete_filename_p (str)) | |
1090 | absolute = 1; | |
1091 | ||
e61b9b87 | 1092 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1093 | { |
e61b9b87 | 1094 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1095 | if (!complete_filename_p (filename)) |
1096 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1097 | /* Of course, this could conceivably lose if luser sets | |
1098 | default-directory to be something non-absolute... */ | |
1099 | { | |
1100 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1101 | if (!complete_filename_p (filename)) | |
1102 | /* Give up on this path element! */ | |
1103 | continue; | |
1104 | } | |
1105 | ||
1106 | /* Calculate maximum size of any filename made from | |
1107 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1108 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1109 | if (fn_size < want_size) |
1110 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1111 | ||
078e7b4a | 1112 | /* Loop over suffixes. */ |
e61b9b87 SM |
1113 | for (tail = NILP (suffixes) ? default_suffixes : suffixes; |
1114 | CONSP (tail); tail = XCDR (tail)) | |
078e7b4a | 1115 | { |
d5db4077 | 1116 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1117 | Lisp_Object handler; |
eb191db2 | 1118 | int exists; |
078e7b4a | 1119 | |
c49afcd7 RS |
1120 | /* Concatenate path element/specified name with the suffix. |
1121 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1122 | if (SCHARS (filename) > 2 |
1123 | && SREF (filename, 0) == '/' | |
1124 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1125 | { |
d5db4077 KR |
1126 | strncpy (fn, SDATA (filename) + 2, |
1127 | SBYTES (filename) - 2); | |
1128 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1129 | } |
1130 | else | |
1131 | { | |
d5db4077 KR |
1132 | strncpy (fn, SDATA (filename), |
1133 | SBYTES (filename)); | |
1134 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1135 | } |
1136 | ||
078e7b4a | 1137 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1138 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1139 | |
74549846 | 1140 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1141 | /* We used to only check for handlers on non-absolute file names: |
1142 | if (absolute) | |
1143 | handler = Qnil; | |
1144 | else | |
1145 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1146 | It's not clear why that was the case and it breaks things like | |
1147 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1148 | string = build_string (fn); |
4773b8ca | 1149 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1150 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1151 | { | |
1152 | if (NILP (predicate)) | |
1153 | exists = !NILP (Ffile_readable_p (string)); | |
1154 | else | |
1155 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1156 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1157 | exists = 0; |
1158 | ||
1159 | if (exists) | |
078e7b4a JB |
1160 | { |
1161 | /* We succeeded; return this descriptor and filename. */ | |
1162 | if (storeptr) | |
eb191db2 | 1163 | *storeptr = string; |
5ef2a3c0 | 1164 | UNGCPRO; |
96dc0f4e | 1165 | return -2; |
74549846 RS |
1166 | } |
1167 | } | |
1168 | else | |
1169 | { | |
4b2dd274 | 1170 | const char *pfn; |
eb191db2 EZ |
1171 | |
1172 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1173 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1174 | exists = (stat (pfn, &st) >= 0 |
1175 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1176 | if (exists) |
1177 | { | |
1178 | /* Check that we can access or open it. */ | |
86d00812 SM |
1179 | if (NATNUMP (predicate)) |
1180 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1181 | else |
eb191db2 | 1182 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1183 | |
1184 | if (fd >= 0) | |
1185 | { | |
1186 | /* We succeeded; return this descriptor and filename. */ | |
1187 | if (storeptr) | |
eb191db2 | 1188 | *storeptr = string; |
74549846 RS |
1189 | UNGCPRO; |
1190 | return fd; | |
1191 | } | |
078e7b4a JB |
1192 | } |
1193 | } | |
078e7b4a | 1194 | } |
5a6e5452 | 1195 | if (absolute) |
5ef2a3c0 | 1196 | break; |
078e7b4a JB |
1197 | } |
1198 | ||
5ef2a3c0 KH |
1199 | UNGCPRO; |
1200 | return -1; | |
078e7b4a JB |
1201 | } |
1202 | ||
1203 | \f | |
ae321d28 RS |
1204 | /* Merge the list we've accumulated of globals from the current input source |
1205 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1206 | the source has an associated file name or not. |
1207 | ||
1208 | FILENAME is the file name that we are loading from. | |
1209 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1210 | |
1211 | static void | |
b502a9a1 RS |
1212 | build_load_history (filename, entire) |
1213 | Lisp_Object filename; | |
1214 | int entire; | |
ae321d28 RS |
1215 | { |
1216 | register Lisp_Object tail, prev, newelt; | |
1217 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1218 | register int foundit = 0; |
ae321d28 RS |
1219 | |
1220 | tail = Vload_history; | |
1221 | prev = Qnil; | |
b502a9a1 | 1222 | |
86d00812 | 1223 | while (CONSP (tail)) |
ae321d28 | 1224 | { |
86d00812 | 1225 | tem = XCAR (tail); |
ae321d28 RS |
1226 | |
1227 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1228 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1229 | { |
1230 | foundit = 1; | |
1231 | ||
b502a9a1 RS |
1232 | /* If we're loading the entire file, remove old data. */ |
1233 | if (entire) | |
86d00812 | 1234 | { |
ae321d28 | 1235 | if (NILP (prev)) |
86d00812 | 1236 | Vload_history = XCDR (tail); |
ae321d28 | 1237 | else |
86d00812 | 1238 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1239 | } |
1240 | ||
1241 | /* Otherwise, cons on new symbols that are not already members. */ | |
1242 | else | |
1243 | { | |
1244 | tem2 = Vcurrent_load_list; | |
1245 | ||
1246 | while (CONSP (tem2)) | |
1247 | { | |
86d00812 | 1248 | newelt = XCAR (tem2); |
ae321d28 | 1249 | |
d642e4f9 | 1250 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1251 | Fsetcar (tail, Fcons (XCAR (tem), |
1252 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1253 | |
86d00812 | 1254 | tem2 = XCDR (tem2); |
ae321d28 RS |
1255 | QUIT; |
1256 | } | |
1257 | } | |
1258 | } | |
1259 | else | |
1260 | prev = tail; | |
86d00812 | 1261 | tail = XCDR (tail); |
ae321d28 RS |
1262 | QUIT; |
1263 | } | |
1264 | ||
b502a9a1 RS |
1265 | /* If we're loading an entire file, cons the new assoc onto the |
1266 | front of load-history, the most-recently-loaded position. Also | |
1267 | do this if we didn't find an existing member for the file. */ | |
1268 | if (entire || !foundit) | |
8a1f1537 RS |
1269 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1270 | Vload_history); | |
ae321d28 RS |
1271 | } |
1272 | ||
078e7b4a | 1273 | Lisp_Object |
232ccf27 DL |
1274 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1275 | Lisp_Object junk; | |
078e7b4a JB |
1276 | { |
1277 | read_pure = 0; | |
1278 | return Qnil; | |
1279 | } | |
1280 | ||
94e554db RS |
1281 | static Lisp_Object |
1282 | readevalloop_1 (old) | |
1283 | Lisp_Object old; | |
1284 | { | |
1285 | load_convert_to_unibyte = ! NILP (old); | |
1286 | return Qnil; | |
1287 | } | |
1288 | ||
9c97398c GM |
1289 | /* Signal an `end-of-file' error, if possible with file name |
1290 | information. */ | |
1291 | ||
1292 | static void | |
1293 | end_of_file_error () | |
1294 | { | |
1295 | Lisp_Object data; | |
1296 | ||
1297 | if (STRINGP (Vload_file_name)) | |
1298 | data = Fcons (Vload_file_name, Qnil); | |
1299 | else | |
1300 | data = Qnil; | |
1301 | ||
1302 | Fsignal (Qend_of_file, data); | |
1303 | } | |
1304 | ||
94e554db | 1305 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1306 | for this invocation. |
4c03c46d KS |
1307 | READFUN, if non-nil, is used instead of `read'. |
1308 | START, END is region in current buffer (from eval-region). */ | |
94e554db | 1309 | |
078e7b4a | 1310 | static void |
4c03c46d KS |
1311 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1312 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1313 | Lisp_Object readcharfun; |
ae321d28 RS |
1314 | FILE *stream; |
1315 | Lisp_Object sourcename; | |
078e7b4a JB |
1316 | Lisp_Object (*evalfun) (); |
1317 | int printflag; | |
976350af | 1318 | Lisp_Object unibyte, readfun; |
4c03c46d | 1319 | Lisp_Object start, end; |
078e7b4a JB |
1320 | { |
1321 | register int c; | |
1322 | register Lisp_Object val; | |
aed13378 | 1323 | int count = SPECPDL_INDEX (); |
0a37f512 | 1324 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1325 | struct buffer *b = 0; |
f38952fe | 1326 | int continue_reading_p; |
49cf7ff4 RS |
1327 | |
1328 | if (BUFFERP (readcharfun)) | |
1329 | b = XBUFFER (readcharfun); | |
1330 | else if (MARKERP (readcharfun)) | |
1331 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1332 | |
0a37f512 | 1333 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1334 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1335 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1336 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1337 | |
00a9a935 | 1338 | readchar_backlog = -1; |
6f7f43d5 | 1339 | |
0a37f512 | 1340 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1341 | |
ae321d28 RS |
1342 | LOADHIST_ATTACH (sourcename); |
1343 | ||
f38952fe GM |
1344 | continue_reading_p = 1; |
1345 | while (continue_reading_p) | |
078e7b4a | 1346 | { |
4c03c46d KS |
1347 | int count1 = SPECPDL_INDEX (); |
1348 | ||
49cf7ff4 RS |
1349 | if (b != 0 && NILP (b->name)) |
1350 | error ("Reading from killed buffer"); | |
1351 | ||
721b7d9e | 1352 | |
4c03c46d KS |
1353 | if (!NILP (start)) |
1354 | { | |
721b7d9e RS |
1355 | /* Switch to the buffer we are reading from. */ |
1356 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1357 | set_buffer_internal (b); | |
1358 | ||
1359 | /* Save point in it. */ | |
4c03c46d | 1360 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1361 | /* Save ZV in it. */ |
4c03c46d | 1362 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1363 | /* Those get unbound after we read one expression. */ |
1364 | ||
1365 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d KS |
1366 | Fgoto_char (start); |
1367 | Fnarrow_to_region (make_number (BEGV), end); | |
1368 | } | |
1369 | ||
078e7b4a | 1370 | instream = stream; |
4c03c46d | 1371 | read_next: |
078e7b4a JB |
1372 | c = READCHAR; |
1373 | if (c == ';') | |
1374 | { | |
1375 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1376 | goto read_next; |
1377 | } | |
1378 | if (c < 0) | |
1379 | { | |
1380 | unbind_to (count1, Qnil); | |
1381 | break; | |
078e7b4a | 1382 | } |
6069d957 RS |
1383 | |
1384 | /* Ignore whitespace here, so we can detect eof. */ | |
1385 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1386 | goto read_next; |
078e7b4a | 1387 | |
265a9e55 | 1388 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1389 | { |
1390 | record_unwind_protect (unreadpure, Qnil); | |
1391 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1392 | } |
1393 | else | |
1394 | { | |
1395 | UNREAD (c); | |
4ad679f9 | 1396 | read_objects = Qnil; |
f38952fe GM |
1397 | if (!NILP (readfun)) |
1398 | { | |
1399 | val = call1 (readfun, readcharfun); | |
1400 | ||
1401 | /* If READCHARFUN has set point to ZV, we should | |
1402 | stop reading, even if the form read sets point | |
1403 | to a different value when evaluated. */ | |
1404 | if (BUFFERP (readcharfun)) | |
1405 | { | |
1406 | struct buffer *b = XBUFFER (readcharfun); | |
1407 | if (BUF_PT (b) == BUF_ZV (b)) | |
1408 | continue_reading_p = 0; | |
1409 | } | |
1410 | } | |
976350af | 1411 | else if (! NILP (Vload_read_function)) |
84a15045 | 1412 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1413 | else |
abb13b09 | 1414 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1415 | } |
1416 | ||
4c03c46d KS |
1417 | if (!NILP (start) && continue_reading_p) |
1418 | start = Fpoint_marker (); | |
1419 | unbind_to (count1, Qnil); | |
1420 | ||
078e7b4a | 1421 | val = (*evalfun) (val); |
f38952fe | 1422 | |
078e7b4a JB |
1423 | if (printflag) |
1424 | { | |
1425 | Vvalues = Fcons (val, Vvalues); | |
1426 | if (EQ (Vstandard_output, Qt)) | |
1427 | Fprin1 (val, Qnil); | |
1428 | else | |
1429 | Fprint (val, Qnil); | |
1430 | } | |
1431 | } | |
1432 | ||
b502a9a1 | 1433 | build_load_history (sourcename, |
c1ed1b20 SM |
1434 | stream || (INTEGERP (start) && INTEGERP (end) |
1435 | && XINT (start) == BEG && XINT (end) == Z)); | |
b502a9a1 | 1436 | |
ae321d28 RS |
1437 | UNGCPRO; |
1438 | ||
078e7b4a JB |
1439 | unbind_to (count, Qnil); |
1440 | } | |
1441 | ||
1076254d | 1442 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1443 | doc: /* Execute the current buffer as Lisp code. |
1444 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1445 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1446 | PRINTFLAG controls printing of output: | |
1447 | nil means discard it; anything else is stream for print. | |
1448 | ||
1449 | If the optional third argument FILENAME is non-nil, | |
1450 | it specifies the file name to use for `load-history'. | |
1451 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1452 | for this invocation. | |
1453 | ||
3f9ab804 | 1454 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1455 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1456 | ||
1457 | This function preserves the position of point. */) | |
1458 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1459 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1460 | { |
aed13378 | 1461 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1462 | Lisp_Object tem, buf; |
1463 | ||
9391b698 | 1464 | if (NILP (buffer)) |
228d4b1c JA |
1465 | buf = Fcurrent_buffer (); |
1466 | else | |
9391b698 | 1467 | buf = Fget_buffer (buffer); |
dfdb645c | 1468 | if (NILP (buf)) |
13febd85 | 1469 | error ("No such buffer"); |
228d4b1c | 1470 | |
1076254d | 1471 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1472 | tem = Qsymbolp; |
1473 | else | |
1474 | tem = printflag; | |
13febd85 RS |
1475 | |
1476 | if (NILP (filename)) | |
1477 | filename = XBUFFER (buf)->filename; | |
1478 | ||
3f39f996 | 1479 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1480 | specbind (Qstandard_output, tem); |
1481 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1482 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1483 | readevalloop (buf, 0, filename, Feval, |
1484 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1485 | unbind_to (count, Qnil); |
228d4b1c JA |
1486 | |
1487 | return Qnil; | |
1488 | } | |
1489 | ||
976350af | 1490 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1491 | doc: /* Execute the region as Lisp code. |
1492 | When called from programs, expects two arguments, | |
1493 | giving starting and ending indices in the current buffer | |
1494 | of the text to be executed. | |
1495 | Programs can pass third argument PRINTFLAG which controls output: | |
1496 | nil means discard it; anything else is stream for printing it. | |
1497 | Also the fourth argument READ-FUNCTION, if non-nil, is used | |
1498 | instead of `read' to read each expression. It gets one argument | |
1499 | which is the input stream for reading characters. | |
1500 | ||
1501 | This function does not move point. */) | |
1502 | (start, end, printflag, read_function) | |
976350af | 1503 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1504 | { |
aed13378 | 1505 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1506 | Lisp_Object tem, cbuf; |
1507 | ||
1508 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1509 | |
265a9e55 | 1510 | if (NILP (printflag)) |
078e7b4a JB |
1511 | tem = Qsymbolp; |
1512 | else | |
1513 | tem = printflag; | |
1514 | specbind (Qstandard_output, tem); | |
3f39f996 | 1515 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1516 | |
4c03c46d | 1517 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1518 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1519 | !NILP (printflag), Qnil, read_function, |
1520 | start, end); | |
078e7b4a JB |
1521 | |
1522 | return unbind_to (count, Qnil); | |
1523 | } | |
1524 | ||
078e7b4a JB |
1525 | \f |
1526 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1527 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1528 | If STREAM is nil, use the value of `standard-input' (which see). | |
1529 | STREAM or the value of `standard-input' may be: | |
1530 | a buffer (read from point and advance it) | |
1531 | a marker (read from where it points and advance it) | |
1532 | a function (call it with no arguments for each character, | |
1533 | call it with a char as argument to push a char back) | |
1534 | a string (takes text from string, starting at the beginning) | |
1535 | t (read text line using minibuffer and use it, or read from | |
1536 | standard input in batch mode). */) | |
1537 | (stream) | |
5be02dff | 1538 | Lisp_Object stream; |
078e7b4a | 1539 | { |
5be02dff KH |
1540 | if (NILP (stream)) |
1541 | stream = Vstandard_input; | |
1542 | if (EQ (stream, Qt)) | |
1543 | stream = Qread_char; | |
5be02dff | 1544 | if (EQ (stream, Qread_char)) |
078e7b4a | 1545 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1546 | |
abb13b09 | 1547 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1548 | } |
1549 | ||
1550 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1551 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1552 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1553 | START and END optionally delimit a substring of STRING from which to read; | |
1554 | they default to 0 and (length STRING) respectively. */) | |
1555 | (string, start, end) | |
078e7b4a JB |
1556 | Lisp_Object string, start, end; |
1557 | { | |
2530ceaf | 1558 | Lisp_Object ret; |
b7826503 | 1559 | CHECK_STRING (string); |
2530ceaf CW |
1560 | /* read_internal_start sets read_from_string_index. */ |
1561 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1562 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1563 | } |
078e7b4a | 1564 | |
abb13b09 CW |
1565 | /* Function to set up the global context we need in toplevel read |
1566 | calls. */ | |
1567 | static Lisp_Object | |
1568 | read_internal_start (stream, start, end) | |
1569 | Lisp_Object stream; | |
1570 | Lisp_Object start; /* Only used when stream is a string. */ | |
1571 | Lisp_Object end; /* Only used when stream is a string. */ | |
1572 | { | |
1573 | Lisp_Object retval; | |
078e7b4a | 1574 | |
abb13b09 CW |
1575 | readchar_backlog = -1; |
1576 | readchar_count = 0; | |
17634846 | 1577 | new_backquote_flag = 0; |
4ad679f9 | 1578 | read_objects = Qnil; |
abb13b09 CW |
1579 | if (EQ (Vread_with_symbol_positions, Qt) |
1580 | || EQ (Vread_with_symbol_positions, stream)) | |
1581 | Vread_symbol_positions_list = Qnil; | |
1582 | ||
1583 | if (STRINGP (stream)) | |
1584 | { | |
1585 | int startval, endval; | |
1586 | if (NILP (end)) | |
d5db4077 | 1587 | endval = SCHARS (stream); |
abb13b09 CW |
1588 | else |
1589 | { | |
1590 | CHECK_NUMBER (end); | |
1591 | endval = XINT (end); | |
d5db4077 | 1592 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1593 | args_out_of_range (stream, end); |
1594 | } | |
17634846 | 1595 | |
abb13b09 CW |
1596 | if (NILP (start)) |
1597 | startval = 0; | |
1598 | else | |
1599 | { | |
1600 | CHECK_NUMBER (start); | |
1601 | startval = XINT (start); | |
1602 | if (startval < 0 || startval > endval) | |
1603 | args_out_of_range (stream, start); | |
1604 | } | |
1605 | read_from_string_index = startval; | |
1606 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1607 | read_from_string_limit = endval; | |
1608 | } | |
177c0ea7 | 1609 | |
abb13b09 CW |
1610 | retval = read0 (stream); |
1611 | if (EQ (Vread_with_symbol_positions, Qt) | |
1612 | || EQ (Vread_with_symbol_positions, stream)) | |
1613 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1614 | return retval; | |
078e7b4a JB |
1615 | } |
1616 | \f | |
6428369f KH |
1617 | /* Use this for recursive reads, in contexts where internal tokens |
1618 | are not allowed. */ | |
e28552a4 | 1619 | |
078e7b4a JB |
1620 | static Lisp_Object |
1621 | read0 (readcharfun) | |
1622 | Lisp_Object readcharfun; | |
1623 | { | |
1624 | register Lisp_Object val; | |
e28552a4 | 1625 | int c; |
078e7b4a | 1626 | |
17634846 | 1627 | val = read1 (readcharfun, &c, 0); |
6428369f | 1628 | if (c) |
93d75e4c RS |
1629 | Fsignal (Qinvalid_read_syntax, Fcons (Fmake_string (make_number (1), |
1630 | make_number (c)), | |
e28552a4 | 1631 | Qnil)); |
078e7b4a JB |
1632 | |
1633 | return val; | |
1634 | } | |
1635 | \f | |
1636 | static int read_buffer_size; | |
1637 | static char *read_buffer; | |
1638 | ||
fe0e03f3 KH |
1639 | /* Read multibyte form and return it as a character. C is a first |
1640 | byte of multibyte form, and rest of them are read from | |
1641 | READCHARFUN. */ | |
6f7f43d5 | 1642 | |
fe0e03f3 KH |
1643 | static int |
1644 | read_multibyte (c, readcharfun) | |
1645 | register int c; | |
1646 | Lisp_Object readcharfun; | |
1647 | { | |
1648 | /* We need the actual character code of this multibyte | |
1649 | characters. */ | |
449fea39 | 1650 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1651 | int len = 0; |
0d5e5843 | 1652 | int bytes; |
fe0e03f3 | 1653 | |
abb13b09 CW |
1654 | if (c < 0) |
1655 | return c; | |
1656 | ||
fe0e03f3 KH |
1657 | str[len++] = c; |
1658 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1659 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1660 | { |
1661 | str[len++] = c; | |
1662 | readchar_count--; | |
1663 | } | |
fe0e03f3 | 1664 | UNREAD (c); |
0d5e5843 KH |
1665 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1666 | return STRING_CHAR (str, len); | |
1667 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1668 | but the first one, and return the first byte. */ | |
1669 | while (--len > 0) | |
1670 | UNREAD (str[len]); | |
1671 | return str[0]; | |
fe0e03f3 KH |
1672 | } |
1673 | ||
f6f79b37 RS |
1674 | /* Read a \-escape sequence, assuming we already read the `\'. |
1675 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1676 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1677 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1678 | |
078e7b4a | 1679 | static int |
f6f79b37 | 1680 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1681 | Lisp_Object readcharfun; |
e7fc914b | 1682 | int stringp; |
f6f79b37 | 1683 | int *byterep; |
078e7b4a JB |
1684 | { |
1685 | register int c = READCHAR; | |
f6f79b37 RS |
1686 | |
1687 | *byterep = 0; | |
1688 | ||
078e7b4a JB |
1689 | switch (c) |
1690 | { | |
f3849f25 | 1691 | case -1: |
da3b886d | 1692 | end_of_file_error (); |
f3849f25 | 1693 | |
078e7b4a | 1694 | case 'a': |
265a9e55 | 1695 | return '\007'; |
078e7b4a JB |
1696 | case 'b': |
1697 | return '\b'; | |
f405a585 RS |
1698 | case 'd': |
1699 | return 0177; | |
078e7b4a JB |
1700 | case 'e': |
1701 | return 033; | |
1702 | case 'f': | |
1703 | return '\f'; | |
1704 | case 'n': | |
1705 | return '\n'; | |
1706 | case 'r': | |
1707 | return '\r'; | |
1708 | case 't': | |
1709 | return '\t'; | |
1710 | case 'v': | |
1711 | return '\v'; | |
1712 | case '\n': | |
1713 | return -1; | |
e28552a4 | 1714 | case ' ': |
e7fc914b KH |
1715 | if (stringp) |
1716 | return -1; | |
1717 | return ' '; | |
078e7b4a JB |
1718 | |
1719 | case 'M': | |
1720 | c = READCHAR; | |
1721 | if (c != '-') | |
1722 | error ("Invalid escape character syntax"); | |
1723 | c = READCHAR; | |
1724 | if (c == '\\') | |
f6f79b37 | 1725 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1726 | return c | meta_modifier; |
f405a585 RS |
1727 | |
1728 | case 'S': | |
1729 | c = READCHAR; | |
1730 | if (c != '-') | |
1731 | error ("Invalid escape character syntax"); | |
1732 | c = READCHAR; | |
1733 | if (c == '\\') | |
f6f79b37 | 1734 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1735 | return c | shift_modifier; |
1736 | ||
1737 | case 'H': | |
1738 | c = READCHAR; | |
1739 | if (c != '-') | |
1740 | error ("Invalid escape character syntax"); | |
1741 | c = READCHAR; | |
1742 | if (c == '\\') | |
f6f79b37 | 1743 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1744 | return c | hyper_modifier; |
1745 | ||
1746 | case 'A': | |
1747 | c = READCHAR; | |
1748 | if (c != '-') | |
1749 | error ("Invalid escape character syntax"); | |
1750 | c = READCHAR; | |
1751 | if (c == '\\') | |
f6f79b37 | 1752 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1753 | return c | alt_modifier; |
1754 | ||
1755 | case 's': | |
1756 | c = READCHAR; | |
010b7eac RS |
1757 | if (c != '-') |
1758 | { | |
1759 | UNREAD (c); | |
1760 | return ' '; | |
1761 | } | |
7bd279cd RS |
1762 | c = READCHAR; |
1763 | if (c == '\\') | |
f6f79b37 | 1764 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1765 | return c | super_modifier; |
078e7b4a JB |
1766 | |
1767 | case 'C': | |
1768 | c = READCHAR; | |
1769 | if (c != '-') | |
1770 | error ("Invalid escape character syntax"); | |
1771 | case '^': | |
1772 | c = READCHAR; | |
1773 | if (c == '\\') | |
f6f79b37 | 1774 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1775 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1776 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1777 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1778 | return c | ctrl_modifier; | |
f405a585 RS |
1779 | /* ASCII control chars are made from letters (both cases), |
1780 | as well as the non-letters within 0100...0137. */ | |
1781 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1782 | return (c & (037 | ~0177)); | |
1783 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1784 | return (c & (037 | ~0177)); | |
078e7b4a | 1785 | else |
7bd279cd | 1786 | return c | ctrl_modifier; |
078e7b4a JB |
1787 | |
1788 | case '0': | |
1789 | case '1': | |
1790 | case '2': | |
1791 | case '3': | |
1792 | case '4': | |
1793 | case '5': | |
1794 | case '6': | |
1795 | case '7': | |
1796 | /* An octal escape, as in ANSI C. */ | |
1797 | { | |
1798 | register int i = c - '0'; | |
1799 | register int count = 0; | |
1800 | while (++count < 3) | |
1801 | { | |
1802 | if ((c = READCHAR) >= '0' && c <= '7') | |
1803 | { | |
1804 | i *= 8; | |
1805 | i += c - '0'; | |
1806 | } | |
1807 | else | |
1808 | { | |
1809 | UNREAD (c); | |
1810 | break; | |
1811 | } | |
1812 | } | |
177c0ea7 | 1813 | |
f6f79b37 | 1814 | *byterep = 1; |
078e7b4a JB |
1815 | return i; |
1816 | } | |
1817 | ||
1818 | case 'x': | |
1819 | /* A hex escape, as in ANSI C. */ | |
1820 | { | |
1821 | int i = 0; | |
1822 | while (1) | |
1823 | { | |
1824 | c = READCHAR; | |
1825 | if (c >= '0' && c <= '9') | |
1826 | { | |
1827 | i *= 16; | |
1828 | i += c - '0'; | |
1829 | } | |
1830 | else if ((c >= 'a' && c <= 'f') | |
1831 | || (c >= 'A' && c <= 'F')) | |
1832 | { | |
1833 | i *= 16; | |
1834 | if (c >= 'a' && c <= 'f') | |
1835 | i += c - 'a' + 10; | |
1836 | else | |
1837 | i += c - 'A' + 10; | |
1838 | } | |
1839 | else | |
1840 | { | |
1841 | UNREAD (c); | |
1842 | break; | |
1843 | } | |
1844 | } | |
f6f79b37 RS |
1845 | |
1846 | *byterep = 2; | |
078e7b4a JB |
1847 | return i; |
1848 | } | |
1849 | ||
1850 | default: | |
fe0e03f3 KH |
1851 | if (BASE_LEADING_CODE_P (c)) |
1852 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
1853 | return c; |
1854 | } | |
1855 | } | |
1856 | ||
bf5d1a17 GM |
1857 | |
1858 | /* Read an integer in radix RADIX using READCHARFUN to read | |
1859 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
1860 | read error is signaled . Value is the integer read. Signals an | |
1861 | error if encountering invalid read syntax or if RADIX is out of | |
1862 | range. */ | |
1863 | ||
1864 | static Lisp_Object | |
1865 | read_integer (readcharfun, radix) | |
1866 | Lisp_Object readcharfun; | |
1867 | int radix; | |
1868 | { | |
5e37dc22 GM |
1869 | int ndigits = 0, invalid_p, c, sign = 0; |
1870 | EMACS_INT number = 0; | |
bf5d1a17 GM |
1871 | |
1872 | if (radix < 2 || radix > 36) | |
1873 | invalid_p = 1; | |
1874 | else | |
1875 | { | |
1876 | number = ndigits = invalid_p = 0; | |
1877 | sign = 1; | |
1878 | ||
1879 | c = READCHAR; | |
1880 | if (c == '-') | |
1881 | { | |
1882 | c = READCHAR; | |
1883 | sign = -1; | |
1884 | } | |
1885 | else if (c == '+') | |
1886 | c = READCHAR; | |
177c0ea7 | 1887 | |
bf5d1a17 GM |
1888 | while (c >= 0) |
1889 | { | |
1890 | int digit; | |
177c0ea7 | 1891 | |
bf5d1a17 GM |
1892 | if (c >= '0' && c <= '9') |
1893 | digit = c - '0'; | |
1894 | else if (c >= 'a' && c <= 'z') | |
1895 | digit = c - 'a' + 10; | |
1896 | else if (c >= 'A' && c <= 'Z') | |
1897 | digit = c - 'A' + 10; | |
1898 | else | |
b632fa48 GM |
1899 | { |
1900 | UNREAD (c); | |
1901 | break; | |
1902 | } | |
bf5d1a17 GM |
1903 | |
1904 | if (digit < 0 || digit >= radix) | |
1905 | invalid_p = 1; | |
1906 | ||
1907 | number = radix * number + digit; | |
1908 | ++ndigits; | |
1909 | c = READCHAR; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | if (ndigits == 0 || invalid_p) | |
1914 | { | |
1915 | char buf[50]; | |
1916 | sprintf (buf, "integer, radix %d", radix); | |
1917 | Fsignal (Qinvalid_read_syntax, Fcons (build_string (buf), Qnil)); | |
1918 | } | |
1919 | ||
1920 | return make_number (sign * number); | |
1921 | } | |
1922 | ||
1923 | ||
a742d646 GM |
1924 | /* Convert unibyte text in read_buffer to multibyte. |
1925 | ||
1926 | Initially, *P is a pointer after the end of the unibyte text, and | |
1927 | the pointer *END points after the end of read_buffer. | |
1928 | ||
1929 | If read_buffer doesn't have enough room to hold the result | |
1930 | of the conversion, reallocate it and adjust *P and *END. | |
1931 | ||
1932 | At the end, make *P point after the result of the conversion, and | |
1933 | return in *NCHARS the number of characters in the converted | |
1934 | text. */ | |
1935 | ||
1936 | static void | |
1937 | to_multibyte (p, end, nchars) | |
1938 | char **p, **end; | |
1939 | int *nchars; | |
1940 | { | |
1941 | int nbytes; | |
1942 | ||
1943 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 1944 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
1945 | { |
1946 | int offset = *p - read_buffer; | |
fe957e65 | 1947 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
1948 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
1949 | *p = read_buffer + offset; | |
1950 | *end = read_buffer + read_buffer_size; | |
1951 | } | |
1952 | ||
1953 | if (nbytes != *nchars) | |
1954 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
1955 | *p - read_buffer, nchars); | |
177c0ea7 | 1956 | |
a742d646 GM |
1957 | *p = read_buffer + nbytes; |
1958 | } | |
1959 | ||
1960 | ||
6428369f KH |
1961 | /* If the next token is ')' or ']' or '.', we store that character |
1962 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
1963 | zero in *PCH and we read and return one lisp object. |
1964 | ||
1965 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
1966 | ||
078e7b4a | 1967 | static Lisp_Object |
17634846 | 1968 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 1969 | register Lisp_Object readcharfun; |
e28552a4 | 1970 | int *pch; |
17634846 | 1971 | int first_in_list; |
078e7b4a JB |
1972 | { |
1973 | register int c; | |
4ad679f9 EN |
1974 | int uninterned_symbol = 0; |
1975 | ||
6428369f | 1976 | *pch = 0; |
078e7b4a JB |
1977 | |
1978 | retry: | |
1979 | ||
1980 | c = READCHAR; | |
9c97398c GM |
1981 | if (c < 0) |
1982 | end_of_file_error (); | |
078e7b4a JB |
1983 | |
1984 | switch (c) | |
1985 | { | |
1986 | case '(': | |
1987 | return read_list (0, readcharfun); | |
1988 | ||
1989 | case '[': | |
c15cfd1f | 1990 | return read_vector (readcharfun, 0); |
078e7b4a JB |
1991 | |
1992 | case ')': | |
1993 | case ']': | |
078e7b4a | 1994 | { |
6428369f KH |
1995 | *pch = c; |
1996 | return Qnil; | |
078e7b4a JB |
1997 | } |
1998 | ||
1999 | case '#': | |
200f684e | 2000 | c = READCHAR; |
c2390933 RS |
2001 | if (c == '^') |
2002 | { | |
2003 | c = READCHAR; | |
2004 | if (c == '[') | |
2005 | { | |
2006 | Lisp_Object tmp; | |
c15cfd1f | 2007 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
2008 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
2009 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
2010 | error ("Invalid size char-table"); | |
2011 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 2012 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
2013 | return tmp; |
2014 | } | |
3701b5de KH |
2015 | else if (c == '^') |
2016 | { | |
2017 | c = READCHAR; | |
2018 | if (c == '[') | |
2019 | { | |
2020 | Lisp_Object tmp; | |
c15cfd1f | 2021 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
2022 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
2023 | error ("Invalid size char-table"); | |
2024 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2025 | XCHAR_TABLE (tmp)->top = Qnil; | |
2026 | return tmp; | |
2027 | } | |
2028 | Fsignal (Qinvalid_read_syntax, | |
2029 | Fcons (make_string ("#^^", 3), Qnil)); | |
2030 | } | |
c2390933 RS |
2031 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#^", 2), Qnil)); |
2032 | } | |
2033 | if (c == '&') | |
2034 | { | |
2035 | Lisp_Object length; | |
2036 | length = read1 (readcharfun, pch, first_in_list); | |
2037 | c = READCHAR; | |
2038 | if (c == '"') | |
2039 | { | |
2040 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2041 | int size_in_chars |
2042 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2043 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2044 | |
2045 | UNREAD (c); | |
2046 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2047 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2048 | /* We used to print 1 char too many |
2049 | when the number of bits was a multiple of 8. | |
2050 | Accept such input in case it came from an old version. */ | |
2051 | && ! (XFASTINT (length) | |
d1ca81d9 | 2052 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
c2390933 | 2053 | Fsignal (Qinvalid_read_syntax, |
ec3bbd7d | 2054 | Fcons (make_string ("#&...", 5), Qnil)); |
177c0ea7 | 2055 | |
c2390933 | 2056 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2057 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2058 | size_in_chars); |
67d3b149 | 2059 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2060 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2061 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2062 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2063 | return val; |
2064 | } | |
ec3bbd7d | 2065 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#&...", 5), |
039dc30b | 2066 | Qnil)); |
c2390933 | 2067 | } |
200f684e RS |
2068 | if (c == '[') |
2069 | { | |
2070 | /* Accept compiled functions at read-time so that we don't have to | |
2071 | build them using function calls. */ | |
748ef62f | 2072 | Lisp_Object tmp; |
c15cfd1f | 2073 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2074 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2075 | XVECTOR (tmp)->contents); | |
200f684e | 2076 | } |
748ef62f RS |
2077 | if (c == '(') |
2078 | { | |
2079 | Lisp_Object tmp; | |
2080 | struct gcpro gcpro1; | |
e28552a4 | 2081 | int ch; |
748ef62f RS |
2082 | |
2083 | /* Read the string itself. */ | |
17634846 | 2084 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2085 | if (ch != 0 || !STRINGP (tmp)) |
748ef62f RS |
2086 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
2087 | GCPRO1 (tmp); | |
2088 | /* Read the intervals and their properties. */ | |
2089 | while (1) | |
2090 | { | |
2091 | Lisp_Object beg, end, plist; | |
2092 | ||
17634846 | 2093 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2094 | end = plist = Qnil; |
6428369f KH |
2095 | if (ch == ')') |
2096 | break; | |
2097 | if (ch == 0) | |
17634846 | 2098 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2099 | if (ch == 0) |
17634846 | 2100 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2101 | if (ch) |
748ef62f | 2102 | Fsignal (Qinvalid_read_syntax, |
6428369f KH |
2103 | Fcons (build_string ("invalid string property list"), |
2104 | Qnil)); | |
748ef62f RS |
2105 | Fset_text_properties (beg, end, plist, tmp); |
2106 | } | |
2107 | UNGCPRO; | |
2108 | return tmp; | |
2109 | } | |
177c0ea7 | 2110 | |
20ea2964 RS |
2111 | /* #@NUMBER is used to skip NUMBER following characters. |
2112 | That's used in .elc files to skip over doc strings | |
2113 | and function definitions. */ | |
2114 | if (c == '@') | |
2115 | { | |
2116 | int i, nskip = 0; | |
2117 | ||
2118 | /* Read a decimal integer. */ | |
2119 | while ((c = READCHAR) >= 0 | |
2120 | && c >= '0' && c <= '9') | |
2121 | { | |
2122 | nskip *= 10; | |
2123 | nskip += c - '0'; | |
2124 | } | |
2125 | if (c >= 0) | |
2126 | UNREAD (c); | |
177c0ea7 | 2127 | |
b2a30870 RS |
2128 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2129 | { | |
2130 | /* If we are supposed to force doc strings into core right now, | |
2131 | record the last string that we skipped, | |
2132 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2133 | |
2134 | /* But first exchange saved_doc_string | |
2135 | with prev_saved_doc_string, so we save two strings. */ | |
2136 | { | |
2137 | char *temp = saved_doc_string; | |
2138 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2139 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2140 | int temp_len = saved_doc_string_length; |
2141 | ||
2142 | saved_doc_string = prev_saved_doc_string; | |
2143 | saved_doc_string_size = prev_saved_doc_string_size; | |
2144 | saved_doc_string_position = prev_saved_doc_string_position; | |
2145 | saved_doc_string_length = prev_saved_doc_string_length; | |
2146 | ||
2147 | prev_saved_doc_string = temp; | |
2148 | prev_saved_doc_string_size = temp_size; | |
2149 | prev_saved_doc_string_position = temp_pos; | |
2150 | prev_saved_doc_string_length = temp_len; | |
2151 | } | |
2152 | ||
b2a30870 RS |
2153 | if (saved_doc_string_size == 0) |
2154 | { | |
2155 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2156 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2157 | } |
2158 | if (nskip > saved_doc_string_size) | |
2159 | { | |
2160 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2161 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2162 | saved_doc_string_size); | |
b2a30870 RS |
2163 | } |
2164 | ||
68c45bf0 | 2165 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2166 | |
2167 | /* Copy that many characters into saved_doc_string. */ | |
2168 | for (i = 0; i < nskip && c >= 0; i++) | |
2169 | saved_doc_string[i] = c = READCHAR; | |
2170 | ||
2171 | saved_doc_string_length = i; | |
2172 | } | |
2173 | else | |
b2a30870 RS |
2174 | { |
2175 | /* Skip that many characters. */ | |
2176 | for (i = 0; i < nskip && c >= 0; i++) | |
2177 | c = READCHAR; | |
2178 | } | |
d49f0c1a | 2179 | |
20ea2964 RS |
2180 | goto retry; |
2181 | } | |
e2518d02 RS |
2182 | if (c == '!') |
2183 | { | |
2184 | /* #! appears at the beginning of an executable file. | |
2185 | Skip the first line. */ | |
225c7a07 | 2186 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2187 | c = READCHAR; |
2188 | goto retry; | |
2189 | } | |
20ea2964 RS |
2190 | if (c == '$') |
2191 | return Vload_file_name; | |
2b6cae0c RS |
2192 | if (c == '\'') |
2193 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2194 | /* #:foo is the uninterned symbol named foo. */ |
2195 | if (c == ':') | |
2196 | { | |
2197 | uninterned_symbol = 1; | |
2198 | c = READCHAR; | |
2199 | goto default_label; | |
2200 | } | |
2201 | /* Reader forms that can reuse previously read objects. */ | |
2202 | if (c >= '0' && c <= '9') | |
2203 | { | |
2204 | int n = 0; | |
2205 | Lisp_Object tem; | |
2b6cae0c | 2206 | |
4ad679f9 EN |
2207 | /* Read a non-negative integer. */ |
2208 | while (c >= '0' && c <= '9') | |
2209 | { | |
2210 | n *= 10; | |
2211 | n += c - '0'; | |
2212 | c = READCHAR; | |
2213 | } | |
2214 | /* #n=object returns object, but associates it with n for #n#. */ | |
2215 | if (c == '=') | |
2216 | { | |
9e062b6c RS |
2217 | /* Make a placeholder for #n# to use temporarily */ |
2218 | Lisp_Object placeholder; | |
2219 | Lisp_Object cell; | |
2220 | ||
2221 | placeholder = Fcons(Qnil, Qnil); | |
2222 | cell = Fcons (make_number (n), placeholder); | |
2223 | read_objects = Fcons (cell, read_objects); | |
2224 | ||
2225 | /* Read the object itself. */ | |
4ad679f9 | 2226 | tem = read0 (readcharfun); |
9e062b6c RS |
2227 | |
2228 | /* Now put it everywhere the placeholder was... */ | |
2229 | substitute_object_in_subtree (tem, placeholder); | |
2230 | ||
2231 | /* ...and #n# will use the real value from now on. */ | |
2232 | Fsetcdr (cell, tem); | |
177c0ea7 | 2233 | |
4ad679f9 EN |
2234 | return tem; |
2235 | } | |
2236 | /* #n# returns a previously read object. */ | |
2237 | if (c == '#') | |
2238 | { | |
2239 | tem = Fassq (make_number (n), read_objects); | |
2240 | if (CONSP (tem)) | |
2241 | return XCDR (tem); | |
2242 | /* Fall through to error message. */ | |
2243 | } | |
bf5d1a17 GM |
2244 | else if (c == 'r' || c == 'R') |
2245 | return read_integer (readcharfun, n); | |
177c0ea7 | 2246 | |
4ad679f9 EN |
2247 | /* Fall through to error message. */ |
2248 | } | |
bf5d1a17 GM |
2249 | else if (c == 'x' || c == 'X') |
2250 | return read_integer (readcharfun, 16); | |
2251 | else if (c == 'o' || c == 'O') | |
2252 | return read_integer (readcharfun, 8); | |
2253 | else if (c == 'b' || c == 'B') | |
2254 | return read_integer (readcharfun, 2); | |
20ea2964 | 2255 | |
200f684e | 2256 | UNREAD (c); |
748ef62f | 2257 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("#", 1), Qnil)); |
078e7b4a JB |
2258 | |
2259 | case ';': | |
2260 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2261 | goto retry; | |
2262 | ||
2263 | case '\'': | |
2264 | { | |
2265 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2266 | } | |
2267 | ||
17634846 RS |
2268 | case '`': |
2269 | if (first_in_list) | |
2270 | goto default_label; | |
2271 | else | |
2272 | { | |
2273 | Lisp_Object value; | |
2274 | ||
0ffbbdeb | 2275 | new_backquote_flag++; |
17634846 | 2276 | value = read0 (readcharfun); |
0ffbbdeb | 2277 | new_backquote_flag--; |
17634846 RS |
2278 | |
2279 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2280 | } | |
2281 | ||
2282 | case ',': | |
2283 | if (new_backquote_flag) | |
2284 | { | |
2285 | Lisp_Object comma_type = Qnil; | |
2286 | Lisp_Object value; | |
2287 | int ch = READCHAR; | |
2288 | ||
2289 | if (ch == '@') | |
2290 | comma_type = Qcomma_at; | |
2291 | else if (ch == '.') | |
2292 | comma_type = Qcomma_dot; | |
2293 | else | |
2294 | { | |
2295 | if (ch >= 0) UNREAD (ch); | |
2296 | comma_type = Qcomma; | |
2297 | } | |
2298 | ||
0ffbbdeb | 2299 | new_backquote_flag--; |
17634846 | 2300 | value = read0 (readcharfun); |
0ffbbdeb | 2301 | new_backquote_flag++; |
17634846 RS |
2302 | return Fcons (comma_type, Fcons (value, Qnil)); |
2303 | } | |
2304 | else | |
2305 | goto default_label; | |
2306 | ||
078e7b4a JB |
2307 | case '?': |
2308 | { | |
f6f79b37 | 2309 | int discard; |
df9c2be7 KS |
2310 | int next_char; |
2311 | int ok; | |
f6f79b37 | 2312 | |
078e7b4a | 2313 | c = READCHAR; |
9c97398c GM |
2314 | if (c < 0) |
2315 | end_of_file_error (); | |
078e7b4a | 2316 | |
b9284371 KS |
2317 | /* Accept `single space' syntax like (list ? x) where the |
2318 | whitespace character is SPC or TAB. | |
2319 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2320 | as there are well-established escape sequences for these. */ | |
2321 | if (c == ' ' || c == '\t') | |
2322 | return make_number (c); | |
2323 | ||
078e7b4a | 2324 | if (c == '\\') |
f6f79b37 | 2325 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2326 | else if (BASE_LEADING_CODE_P (c)) |
2327 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2328 | |
df9c2be7 KS |
2329 | next_char = READCHAR; |
2330 | if (next_char == '.') | |
2331 | { | |
2332 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2333 | int next_next_char = READCHAR; | |
2334 | UNREAD (next_next_char); | |
2335 | ||
2336 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2337 | || (next_next_char < 0200 |
2338 | && (index ("\"';([#?", next_next_char) | |
2339 | || (!first_in_list && next_next_char == '`') | |
2340 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2341 | } |
2342 | else | |
2343 | { | |
2344 | ok = (next_char <= 040 | |
e613ea97 KH |
2345 | || (next_char < 0200 |
2346 | && (index ("\"';()[]#?", next_char) | |
2347 | || (!first_in_list && next_char == '`') | |
2348 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2349 | } |
2350 | UNREAD (next_char); | |
2351 | if (!ok) | |
37cd4238 KS |
2352 | Fsignal (Qinvalid_read_syntax, Fcons (make_string ("?", 1), Qnil)); |
2353 | ||
6f7f43d5 | 2354 | return make_number (c); |
078e7b4a JB |
2355 | } |
2356 | ||
00a9a935 | 2357 | case '"': |
078e7b4a | 2358 | { |
a742d646 GM |
2359 | char *p = read_buffer; |
2360 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2361 | register int c; |
5150eeec RS |
2362 | /* 1 if we saw an escape sequence specifying |
2363 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2364 | int force_multibyte = 0; |
5150eeec | 2365 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2366 | a single-byte character. */ |
2367 | int force_singlebyte = 0; | |
5150eeec RS |
2368 | /* 1 if read_buffer contains multibyte text now. */ |
2369 | int is_multibyte = 0; | |
078e7b4a | 2370 | int cancel = 0; |
5150eeec | 2371 | int nchars = 0; |
078e7b4a JB |
2372 | |
2373 | while ((c = READCHAR) >= 0 | |
2374 | && c != '\"') | |
2375 | { | |
449fea39 | 2376 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2377 | { |
5d65df0d GM |
2378 | int offset = p - read_buffer; |
2379 | read_buffer = (char *) xrealloc (read_buffer, | |
2380 | read_buffer_size *= 2); | |
2381 | p = read_buffer + offset; | |
078e7b4a JB |
2382 | end = read_buffer + read_buffer_size; |
2383 | } | |
bed23cb2 | 2384 | |
078e7b4a | 2385 | if (c == '\\') |
03e88613 | 2386 | { |
f6f79b37 RS |
2387 | int byterep; |
2388 | ||
2389 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2390 | |
2391 | /* C is -1 if \ newline has just been seen */ | |
2392 | if (c == -1) | |
03e88613 | 2393 | { |
bed23cb2 RS |
2394 | if (p == read_buffer) |
2395 | cancel = 1; | |
03e88613 RS |
2396 | continue; |
2397 | } | |
bed23cb2 | 2398 | |
f6f79b37 | 2399 | if (byterep == 1) |
e7fc914b | 2400 | force_singlebyte = 1; |
f6f79b37 RS |
2401 | else if (byterep == 2) |
2402 | force_multibyte = 1; | |
03e88613 | 2403 | } |
6f7f43d5 | 2404 | |
5150eeec RS |
2405 | /* A character that must be multibyte forces multibyte. */ |
2406 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2407 | force_multibyte = 1; | |
2408 | ||
2409 | /* If we just discovered the need to be multibyte, | |
2410 | convert the text accumulated thus far. */ | |
2411 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2412 | { |
5150eeec RS |
2413 | is_multibyte = 1; |
2414 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2415 | } |
988c2f83 | 2416 | |
5150eeec RS |
2417 | /* Allow `\C- ' and `\C-?'. */ |
2418 | if (c == (CHAR_CTL | ' ')) | |
2419 | c = 0; | |
2420 | else if (c == (CHAR_CTL | '?')) | |
2421 | c = 127; | |
95af0924 | 2422 | |
5150eeec RS |
2423 | if (c & CHAR_SHIFT) |
2424 | { | |
2425 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2426 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2427 | c &= ~CHAR_SHIFT; | |
2428 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2429 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2430 | } |
5150eeec RS |
2431 | |
2432 | if (c & CHAR_META) | |
2433 | /* Move the meta bit to the right place for a string. */ | |
2434 | c = (c & ~CHAR_META) | 0x80; | |
2435 | if (c & CHAR_MODIFIER_MASK) | |
2436 | error ("Invalid modifier in string"); | |
2437 | ||
2438 | if (is_multibyte) | |
2439 | p += CHAR_STRING (c, p); | |
2440 | else | |
2441 | *p++ = c; | |
2442 | ||
2443 | nchars++; | |
078e7b4a | 2444 | } |
5150eeec | 2445 | |
6f7f43d5 | 2446 | if (c < 0) |
9c97398c | 2447 | end_of_file_error (); |
078e7b4a JB |
2448 | |
2449 | /* If purifying, and string starts with \ newline, | |
2450 | return zero instead. This is for doc strings | |
08564963 | 2451 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2452 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2453 | return make_number (0); |
2454 | ||
5150eeec RS |
2455 | if (is_multibyte || force_singlebyte) |
2456 | ; | |
94e554db RS |
2457 | else if (load_convert_to_unibyte) |
2458 | { | |
2459 | Lisp_Object string; | |
a742d646 | 2460 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2461 | if (p - read_buffer != nchars) |
2462 | { | |
2463 | string = make_multibyte_string (read_buffer, nchars, | |
2464 | p - read_buffer); | |
2465 | return Fstring_make_unibyte (string); | |
2466 | } | |
5150eeec RS |
2467 | /* We can make a unibyte string directly. */ |
2468 | is_multibyte = 0; | |
94e554db | 2469 | } |
8db9dc66 RS |
2470 | else if (EQ (readcharfun, Qget_file_char) |
2471 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2472 | { |
2473 | /* Nowadays, reading directly from a file is used only for | |
2474 | compiled Emacs Lisp files, and those always use the | |
2475 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2476 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2477 | byte-compile-dynamic = t). So make the string multibyte |
2478 | if the string contains any multibyte sequences. | |
2479 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2480 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2481 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2482 | } |
e28552a4 | 2483 | else |
bed23cb2 RS |
2484 | /* In all other cases, if we read these bytes as |
2485 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2486 | ; |
e7fc914b | 2487 | |
abb13b09 CW |
2488 | /* We want readchar_count to be the number of characters, not |
2489 | bytes. Hence we adjust for multibyte characters in the | |
2490 | string. ... But it doesn't seem to be necessary, because | |
2491 | READCHAR *does* read multibyte characters from buffers. */ | |
2492 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2493 | if (read_pure) |
491f16a2 | 2494 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2495 | is_multibyte); |
491f16a2 | 2496 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2497 | is_multibyte); |
078e7b4a JB |
2498 | } |
2499 | ||
109d300c JB |
2500 | case '.': |
2501 | { | |
109d300c JB |
2502 | int next_char = READCHAR; |
2503 | UNREAD (next_char); | |
2504 | ||
035eec48 | 2505 | if (next_char <= 040 |
e613ea97 | 2506 | || (next_char < 0200 |
95af0924 KS |
2507 | && (index ("\"';([#?", next_char) |
2508 | || (!first_in_list && next_char == '`') | |
2509 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2510 | { |
6428369f KH |
2511 | *pch = c; |
2512 | return Qnil; | |
109d300c JB |
2513 | } |
2514 | ||
2515 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2516 | below will now loop at least once, assuring that we will not | |
2517 | try to UNREAD two characters in a row. */ | |
2518 | } | |
078e7b4a | 2519 | default: |
17634846 | 2520 | default_label: |
078e7b4a JB |
2521 | if (c <= 040) goto retry; |
2522 | { | |
38404229 | 2523 | char *p = read_buffer; |
481c6336 | 2524 | int quoted = 0; |
078e7b4a JB |
2525 | |
2526 | { | |
38404229 | 2527 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2528 | |
6f7f43d5 | 2529 | while (c > 040 |
e613ea97 KH |
2530 | && (c >= 0200 |
2531 | || (!index ("\"';()[]#", c) | |
2532 | && !(!first_in_list && c == '`') | |
2533 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2534 | { |
449fea39 | 2535 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2536 | { |
5d65df0d GM |
2537 | int offset = p - read_buffer; |
2538 | read_buffer = (char *) xrealloc (read_buffer, | |
2539 | read_buffer_size *= 2); | |
2540 | p = read_buffer + offset; | |
078e7b4a JB |
2541 | end = read_buffer + read_buffer_size; |
2542 | } | |
177c0ea7 | 2543 | |
078e7b4a | 2544 | if (c == '\\') |
481c6336 RS |
2545 | { |
2546 | c = READCHAR; | |
4ab11c09 GM |
2547 | if (c == -1) |
2548 | end_of_file_error (); | |
481c6336 RS |
2549 | quoted = 1; |
2550 | } | |
6f7f43d5 | 2551 | |
bed23cb2 | 2552 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2553 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2554 | else |
2555 | *p++ = c; | |
6f7f43d5 | 2556 | |
078e7b4a JB |
2557 | c = READCHAR; |
2558 | } | |
2559 | ||
2560 | if (p == end) | |
2561 | { | |
5d65df0d GM |
2562 | int offset = p - read_buffer; |
2563 | read_buffer = (char *) xrealloc (read_buffer, | |
2564 | read_buffer_size *= 2); | |
2565 | p = read_buffer + offset; | |
2566 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2567 | } |
2568 | *p = 0; | |
2569 | if (c >= 0) | |
2570 | UNREAD (c); | |
2571 | } | |
2572 | ||
4ad679f9 | 2573 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2574 | { |
2575 | register char *p1; | |
2576 | register Lisp_Object val; | |
2577 | p1 = read_buffer; | |
2578 | if (*p1 == '+' || *p1 == '-') p1++; | |
2579 | /* Is it an integer? */ | |
2580 | if (p1 != p) | |
2581 | { | |
2582 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2583 | /* Integers can have trailing decimal points. */ |
2584 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2585 | if (p1 == p) |
2586 | /* It is an integer. */ | |
2587 | { | |
481c6336 RS |
2588 | if (p1[-1] == '.') |
2589 | p1[-1] = '\0'; | |
faca07fb RS |
2590 | if (sizeof (int) == sizeof (EMACS_INT)) |
2591 | XSETINT (val, atoi (read_buffer)); | |
2592 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2593 | XSETINT (val, atol (read_buffer)); | |
2594 | else | |
2595 | abort (); | |
481c6336 RS |
2596 | return val; |
2597 | } | |
2598 | } | |
481c6336 | 2599 | if (isfloat_string (read_buffer)) |
eb659c41 | 2600 | { |
a8972052 PE |
2601 | /* Compute NaN and infinities using 0.0 in a variable, |
2602 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2603 | than we are. */ |
3c329963 | 2604 | double zero = 0.0; |
a8972052 PE |
2605 | |
2606 | double value; | |
2607 | ||
2608 | /* Negate the value ourselves. This treats 0, NaNs, | |
2609 | and infinity properly on IEEE floating point hosts, | |
2610 | and works around a common bug where atof ("-0.0") | |
2611 | drops the sign. */ | |
2612 | int negative = read_buffer[0] == '-'; | |
2613 | ||
2614 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2615 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2616 | switch (p[-1]) |
eb659c41 | 2617 | { |
a8972052 PE |
2618 | case 'F': |
2619 | value = 1.0 / zero; | |
2620 | break; | |
2621 | case 'N': | |
2622 | value = zero / zero; | |
7690cbb0 RS |
2623 | |
2624 | /* If that made a "negative" NaN, negate it. */ | |
2625 | ||
2626 | { | |
2627 | int i; | |
2628 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2629 | ||
2630 | u_data.d = value; | |
2631 | u_minus_zero.d = - 0.0; | |
2632 | for (i = 0; i < sizeof (double); i++) | |
2633 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2634 | { | |
2635 | value = - value; | |
2636 | break; | |
2637 | } | |
2638 | } | |
2639 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2640 | break; |
2641 | default: | |
2642 | value = atof (read_buffer + negative); | |
2643 | break; | |
eb659c41 | 2644 | } |
a8972052 PE |
2645 | |
2646 | return make_float (negative ? - value : value); | |
eb659c41 | 2647 | } |
481c6336 | 2648 | } |
abb13b09 CW |
2649 | { |
2650 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2651 | : intern (read_buffer); | |
2652 | if (EQ (Vread_with_symbol_positions, Qt) | |
2653 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2654 | Vread_symbol_positions_list = |
abb13b09 CW |
2655 | /* Kind of a hack; this will probably fail if characters |
2656 | in the symbol name were escaped. Not really a big | |
2657 | deal, though. */ | |
f74db720 SM |
2658 | Fcons (Fcons (result, |
2659 | make_number (readchar_count | |
2660 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2661 | Vread_symbol_positions_list); |
2662 | return result; | |
2663 | } | |
078e7b4a JB |
2664 | } |
2665 | } | |
2666 | } | |
2667 | \f | |
9e062b6c RS |
2668 | |
2669 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2670 | static Lisp_Object seen_list; | |
2671 | ||
2672 | static void | |
2673 | substitute_object_in_subtree (object, placeholder) | |
2674 | Lisp_Object object; | |
2675 | Lisp_Object placeholder; | |
2676 | { | |
2677 | Lisp_Object check_object; | |
2678 | ||
2679 | /* We haven't seen any objects when we start. */ | |
2680 | seen_list = Qnil; | |
2681 | ||
2682 | /* Make all the substitutions. */ | |
2683 | check_object | |
2684 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2685 | |
9e062b6c RS |
2686 | /* Clear seen_list because we're done with it. */ |
2687 | seen_list = Qnil; | |
2688 | ||
2689 | /* The returned object here is expected to always eq the | |
2690 | original. */ | |
2691 | if (!EQ (check_object, object)) | |
2692 | error ("Unexpected mutation error in reader"); | |
2693 | } | |
2694 | ||
2695 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2696 | #define SUBSTITUTE(get_val, set_val) \ | |
2697 | { \ | |
2698 | Lisp_Object old_value = get_val; \ | |
2699 | Lisp_Object true_value \ | |
2700 | = substitute_object_recurse (object, placeholder,\ | |
2701 | old_value); \ | |
2702 | \ | |
2703 | if (!EQ (old_value, true_value)) \ | |
2704 | { \ | |
2705 | set_val; \ | |
2706 | } \ | |
2707 | } | |
2708 | ||
2709 | static Lisp_Object | |
2710 | substitute_object_recurse (object, placeholder, subtree) | |
2711 | Lisp_Object object; | |
2712 | Lisp_Object placeholder; | |
2713 | Lisp_Object subtree; | |
2714 | { | |
2715 | /* If we find the placeholder, return the target object. */ | |
2716 | if (EQ (placeholder, subtree)) | |
2717 | return object; | |
2718 | ||
2719 | /* If we've been to this node before, don't explore it again. */ | |
2720 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2721 | return subtree; | |
2722 | ||
2723 | /* If this node can be the entry point to a cycle, remember that | |
2724 | we've seen it. It can only be such an entry point if it was made | |
2725 | by #n=, which means that we can find it as a value in | |
2726 | read_objects. */ | |
2727 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2728 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2729 | |
9e062b6c RS |
2730 | /* Recurse according to subtree's type. |
2731 | Every branch must return a Lisp_Object. */ | |
2732 | switch (XTYPE (subtree)) | |
2733 | { | |
2734 | case Lisp_Vectorlike: | |
2735 | { | |
2736 | int i; | |
7c752c80 | 2737 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2738 | for (i = 0; i < length; i++) |
2739 | { | |
2740 | Lisp_Object idx = make_number (i); | |
2741 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2742 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2743 | } |
2744 | return subtree; | |
2745 | } | |
2746 | ||
2747 | case Lisp_Cons: | |
2748 | { | |
2749 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2750 | Fsetcar (subtree, true_value)); |
9e062b6c | 2751 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2752 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2753 | return subtree; |
2754 | } | |
2755 | ||
9e062b6c RS |
2756 | case Lisp_String: |
2757 | { | |
2758 | /* Check for text properties in each interval. | |
e61b9b87 | 2759 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2760 | |
d5db4077 | 2761 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2762 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2763 | |
0d74b006 SM |
2764 | traverse_intervals_noorder (root_interval, |
2765 | &substitute_in_interval, arg); | |
9e062b6c RS |
2766 | |
2767 | return subtree; | |
2768 | } | |
9e062b6c RS |
2769 | |
2770 | /* Other types don't recurse any further. */ | |
2771 | default: | |
2772 | return subtree; | |
2773 | } | |
2774 | } | |
2775 | ||
2776 | /* Helper function for substitute_object_recurse. */ | |
2777 | static void | |
2778 | substitute_in_interval (interval, arg) | |
2779 | INTERVAL interval; | |
2780 | Lisp_Object arg; | |
2781 | { | |
2782 | Lisp_Object object = Fcar (arg); | |
2783 | Lisp_Object placeholder = Fcdr (arg); | |
2784 | ||
2785 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2786 | } | |
2787 | ||
2788 | \f | |
078e7b4a JB |
2789 | #define LEAD_INT 1 |
2790 | #define DOT_CHAR 2 | |
2791 | #define TRAIL_INT 4 | |
2792 | #define E_CHAR 8 | |
2793 | #define EXP_INT 16 | |
2794 | ||
2795 | int | |
2796 | isfloat_string (cp) | |
2797 | register char *cp; | |
2798 | { | |
c1a2f60a | 2799 | register int state; |
177c0ea7 | 2800 | |
d8578e58 RS |
2801 | char *start = cp; |
2802 | ||
078e7b4a JB |
2803 | state = 0; |
2804 | if (*cp == '+' || *cp == '-') | |
2805 | cp++; | |
2806 | ||
075027b1 | 2807 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2808 | { |
2809 | state |= LEAD_INT; | |
075027b1 RS |
2810 | while (*cp >= '0' && *cp <= '9') |
2811 | cp++; | |
078e7b4a JB |
2812 | } |
2813 | if (*cp == '.') | |
2814 | { | |
2815 | state |= DOT_CHAR; | |
2816 | cp++; | |
2817 | } | |
075027b1 | 2818 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2819 | { |
2820 | state |= TRAIL_INT; | |
075027b1 | 2821 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2822 | cp++; |
2823 | } | |
a35f88bf | 2824 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2825 | { |
2826 | state |= E_CHAR; | |
2827 | cp++; | |
e73997a1 RS |
2828 | if (*cp == '+' || *cp == '-') |
2829 | cp++; | |
078e7b4a | 2830 | } |
078e7b4a | 2831 | |
075027b1 | 2832 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2833 | { |
2834 | state |= EXP_INT; | |
075027b1 | 2835 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2836 | cp++; |
2837 | } | |
d8578e58 RS |
2838 | else if (cp == start) |
2839 | ; | |
eb659c41 RS |
2840 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
2841 | { | |
2842 | state |= EXP_INT; | |
2843 | cp += 3; | |
2844 | } | |
2845 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
2846 | { | |
2847 | state |= EXP_INT; | |
2848 | cp += 3; | |
2849 | } | |
2850 | ||
37579d7c | 2851 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 2852 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 2853 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 2854 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
2855 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
2856 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 2857 | } |
cc94f3b2 | 2858 | |
078e7b4a JB |
2859 | \f |
2860 | static Lisp_Object | |
c15cfd1f | 2861 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 2862 | Lisp_Object readcharfun; |
c15cfd1f | 2863 | int bytecodeflag; |
078e7b4a JB |
2864 | { |
2865 | register int i; | |
2866 | register int size; | |
2867 | register Lisp_Object *ptr; | |
c15cfd1f | 2868 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
2869 | register struct Lisp_Cons *otem; |
2870 | Lisp_Object len; | |
2871 | ||
2872 | tem = read_list (1, readcharfun); | |
2873 | len = Flength (tem); | |
2874 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
2875 | ||
078e7b4a JB |
2876 | size = XVECTOR (vector)->size; |
2877 | ptr = XVECTOR (vector)->contents; | |
2878 | for (i = 0; i < size; i++) | |
2879 | { | |
c15cfd1f RS |
2880 | item = Fcar (tem); |
2881 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
2882 | bytecode object, the docstring containing the bytecode and | |
2883 | constants values must be treated as unibyte and passed to | |
2884 | Fread, to get the actual bytecode string and constants vector. */ | |
2885 | if (bytecodeflag && load_force_doc_strings) | |
2886 | { | |
2887 | if (i == COMPILED_BYTECODE) | |
2888 | { | |
2889 | if (!STRINGP (item)) | |
6fa2b890 | 2890 | error ("Invalid byte code"); |
c15cfd1f RS |
2891 | |
2892 | /* Delay handling the bytecode slot until we know whether | |
2893 | it is lazily-loaded (we can tell by whether the | |
2894 | constants slot is nil). */ | |
2895 | ptr[COMPILED_CONSTANTS] = item; | |
2896 | item = Qnil; | |
2897 | } | |
2898 | else if (i == COMPILED_CONSTANTS) | |
2899 | { | |
2900 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
2901 | ||
2902 | if (NILP (item)) | |
2903 | { | |
2904 | /* Coerce string to unibyte (like string-as-unibyte, | |
2905 | but without generating extra garbage and | |
2906 | guaranteeing no change in the contents). */ | |
bee91904 | 2907 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 2908 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
2909 | |
2910 | item = Fread (bytestr); | |
2911 | if (!CONSP (item)) | |
6fa2b890 | 2912 | error ("Invalid byte code"); |
c15cfd1f RS |
2913 | |
2914 | otem = XCONS (item); | |
c1d497be KR |
2915 | bytestr = XCAR (item); |
2916 | item = XCDR (item); | |
c15cfd1f RS |
2917 | free_cons (otem); |
2918 | } | |
2919 | ||
2920 | /* Now handle the bytecode slot. */ | |
2921 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
2922 | } | |
2923 | } | |
2924 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
2925 | otem = XCONS (tem); |
2926 | tem = Fcdr (tem); | |
2927 | free_cons (otem); | |
2928 | } | |
2929 | return vector; | |
2930 | } | |
177c0ea7 | 2931 | |
6f7f43d5 RS |
2932 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
2933 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
2934 | and make structure pure. */ |
2935 | ||
2936 | static Lisp_Object | |
2937 | read_list (flag, readcharfun) | |
2938 | int flag; | |
2939 | register Lisp_Object readcharfun; | |
2940 | { | |
2941 | /* -1 means check next element for defun, | |
2942 | 0 means don't check, | |
2943 | 1 means already checked and found defun. */ | |
2944 | int defunflag = flag < 0 ? -1 : 0; | |
2945 | Lisp_Object val, tail; | |
2946 | register Lisp_Object elt, tem; | |
2947 | struct gcpro gcpro1, gcpro2; | |
821d417e | 2948 | /* 0 is the normal case. |
b2a30870 | 2949 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 2950 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 2951 | int doc_reference = 0; |
078e7b4a | 2952 | |
17634846 RS |
2953 | /* Initialize this to 1 if we are reading a list. */ |
2954 | int first_in_list = flag <= 0; | |
2955 | ||
078e7b4a JB |
2956 | val = Qnil; |
2957 | tail = Qnil; | |
2958 | ||
2959 | while (1) | |
2960 | { | |
e28552a4 | 2961 | int ch; |
078e7b4a | 2962 | GCPRO2 (val, tail); |
17634846 | 2963 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 2964 | UNGCPRO; |
20ea2964 | 2965 | |
17634846 RS |
2966 | first_in_list = 0; |
2967 | ||
821d417e | 2968 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 2969 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 2970 | && ! NILP (elt) |
821d417e RS |
2971 | && !NILP (Vpurify_flag)) |
2972 | { | |
2973 | if (NILP (Vdoc_file_name)) | |
2974 | /* We have not yet called Snarf-documentation, so assume | |
2975 | this file is described in the DOC-MM.NN file | |
2976 | and Snarf-documentation will fill in the right value later. | |
2977 | For now, replace the whole list with 0. */ | |
2978 | doc_reference = 1; | |
2979 | else | |
2980 | /* We have already called Snarf-documentation, so make a relative | |
2981 | file name for this file, so it can be found properly | |
2982 | in the installed Lisp directory. | |
2983 | We don't use Fexpand_file_name because that would make | |
2984 | the directory absolute now. */ | |
2985 | elt = concat2 (build_string ("../lisp/"), | |
2986 | Ffile_name_nondirectory (elt)); | |
2987 | } | |
b2a30870 | 2988 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 2989 | && ! NILP (elt) |
b2a30870 RS |
2990 | && load_force_doc_strings) |
2991 | doc_reference = 2; | |
20ea2964 | 2992 | |
6428369f | 2993 | if (ch) |
078e7b4a JB |
2994 | { |
2995 | if (flag > 0) | |
2996 | { | |
6428369f | 2997 | if (ch == ']') |
078e7b4a | 2998 | return val; |
821d417e RS |
2999 | Fsignal (Qinvalid_read_syntax, |
3000 | Fcons (make_string (") or . in a vector", 18), Qnil)); | |
078e7b4a | 3001 | } |
6428369f | 3002 | if (ch == ')') |
078e7b4a | 3003 | return val; |
6428369f | 3004 | if (ch == '.') |
078e7b4a JB |
3005 | { |
3006 | GCPRO2 (val, tail); | |
265a9e55 | 3007 | if (!NILP (tail)) |
f5df591a | 3008 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3009 | else |
3010 | val = read0 (readcharfun); | |
17634846 | 3011 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3012 | UNGCPRO; |
6428369f | 3013 | if (ch == ')') |
821d417e RS |
3014 | { |
3015 | if (doc_reference == 1) | |
3016 | return make_number (0); | |
b2a30870 RS |
3017 | if (doc_reference == 2) |
3018 | { | |
3019 | /* Get a doc string from the file we are loading. | |
3020 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 3021 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3022 | /* Position is negative for user variables. */ |
3023 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3024 | if (pos >= saved_doc_string_position |
3025 | && pos < (saved_doc_string_position | |
3026 | + saved_doc_string_length)) | |
3027 | { | |
3028 | int start = pos - saved_doc_string_position; | |
3029 | int from, to; | |
3030 | ||
3031 | /* Process quoting with ^A, | |
3032 | and find the end of the string, | |
3033 | which is marked with ^_ (037). */ | |
3034 | for (from = start, to = start; | |
3035 | saved_doc_string[from] != 037;) | |
3036 | { | |
3037 | int c = saved_doc_string[from++]; | |
3038 | if (c == 1) | |
3039 | { | |
3040 | c = saved_doc_string[from++]; | |
3041 | if (c == 1) | |
3042 | saved_doc_string[to++] = c; | |
3043 | else if (c == '0') | |
3044 | saved_doc_string[to++] = 0; | |
3045 | else if (c == '_') | |
3046 | saved_doc_string[to++] = 037; | |
3047 | } | |
3048 | else | |
3049 | saved_doc_string[to++] = c; | |
3050 | } | |
3051 | ||
3052 | return make_string (saved_doc_string + start, | |
3053 | to - start); | |
3054 | } | |
c15cfd1f RS |
3055 | /* Look in prev_saved_doc_string the same way. */ |
3056 | else if (pos >= prev_saved_doc_string_position | |
3057 | && pos < (prev_saved_doc_string_position | |
3058 | + prev_saved_doc_string_length)) | |
3059 | { | |
3060 | int start = pos - prev_saved_doc_string_position; | |
3061 | int from, to; | |
3062 | ||
3063 | /* Process quoting with ^A, | |
3064 | and find the end of the string, | |
3065 | which is marked with ^_ (037). */ | |
3066 | for (from = start, to = start; | |
3067 | prev_saved_doc_string[from] != 037;) | |
3068 | { | |
3069 | int c = prev_saved_doc_string[from++]; | |
3070 | if (c == 1) | |
3071 | { | |
3072 | c = prev_saved_doc_string[from++]; | |
3073 | if (c == 1) | |
3074 | prev_saved_doc_string[to++] = c; | |
3075 | else if (c == '0') | |
3076 | prev_saved_doc_string[to++] = 0; | |
3077 | else if (c == '_') | |
3078 | prev_saved_doc_string[to++] = 037; | |
3079 | } | |
3080 | else | |
3081 | prev_saved_doc_string[to++] = c; | |
3082 | } | |
3083 | ||
3084 | return make_string (prev_saved_doc_string + start, | |
3085 | to - start); | |
3086 | } | |
b2a30870 | 3087 | else |
6fe9cce5 | 3088 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3089 | } |
3090 | ||
821d417e RS |
3091 | return val; |
3092 | } | |
078e7b4a JB |
3093 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string (". in wrong context", 18), Qnil)); |
3094 | } | |
3095 | return Fsignal (Qinvalid_read_syntax, Fcons (make_string ("] in a list", 11), Qnil)); | |
3096 | } | |
3097 | tem = (read_pure && flag <= 0 | |
3098 | ? pure_cons (elt, Qnil) | |
3099 | : Fcons (elt, Qnil)); | |
265a9e55 | 3100 | if (!NILP (tail)) |
f5df591a | 3101 | XSETCDR (tail, tem); |
078e7b4a JB |
3102 | else |
3103 | val = tem; | |
3104 | tail = tem; | |
3105 | if (defunflag < 0) | |
3106 | defunflag = EQ (elt, Qdefun); | |
3107 | else if (defunflag > 0) | |
3108 | read_pure = 1; | |
3109 | } | |
3110 | } | |
3111 | \f | |
3112 | Lisp_Object Vobarray; | |
3113 | Lisp_Object initial_obarray; | |
3114 | ||
d007f5c8 RS |
3115 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3116 | ||
3117 | int oblookup_last_bucket_number; | |
3118 | ||
3119 | static int hash_string (); | |
d007f5c8 RS |
3120 | |
3121 | /* Get an error if OBARRAY is not an obarray. | |
3122 | If it is one, return it. */ | |
3123 | ||
078e7b4a JB |
3124 | Lisp_Object |
3125 | check_obarray (obarray) | |
3126 | Lisp_Object obarray; | |
3127 | { | |
cfff016d | 3128 | while (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3129 | { |
3130 | /* If Vobarray is now invalid, force it to be valid. */ | |
3131 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
3132 | ||
3133 | obarray = wrong_type_argument (Qvectorp, obarray); | |
3134 | } | |
3135 | return obarray; | |
3136 | } | |
3137 | ||
d007f5c8 RS |
3138 | /* Intern the C string STR: return a symbol with that name, |
3139 | interned in the current obarray. */ | |
078e7b4a JB |
3140 | |
3141 | Lisp_Object | |
3142 | intern (str) | |
4b2dd274 | 3143 | const char *str; |
078e7b4a JB |
3144 | { |
3145 | Lisp_Object tem; | |
3146 | int len = strlen (str); | |
153a17b7 | 3147 | Lisp_Object obarray; |
078e7b4a | 3148 | |
153a17b7 | 3149 | obarray = Vobarray; |
cfff016d | 3150 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3151 | obarray = check_obarray (obarray); |
e28552a4 | 3152 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3153 | if (SYMBOLP (tem)) |
078e7b4a | 3154 | return tem; |
87631ef7 | 3155 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3156 | } |
4ad679f9 EN |
3157 | |
3158 | /* Create an uninterned symbol with name STR. */ | |
3159 | ||
3160 | Lisp_Object | |
3161 | make_symbol (str) | |
3162 | char *str; | |
3163 | { | |
3164 | int len = strlen (str); | |
3165 | ||
3166 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3167 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3168 | : make_string (str, len))); |
3169 | } | |
d007f5c8 | 3170 | \f |
078e7b4a | 3171 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3172 | doc: /* Return the canonical symbol whose name is STRING. |
3173 | If there is none, one is created by this function and returned. | |
3174 | A second optional argument specifies the obarray to use; | |
3175 | it defaults to the value of `obarray'. */) | |
3176 | (string, obarray) | |
9391b698 | 3177 | Lisp_Object string, obarray; |
078e7b4a JB |
3178 | { |
3179 | register Lisp_Object tem, sym, *ptr; | |
3180 | ||
265a9e55 | 3181 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3182 | obarray = check_obarray (obarray); |
3183 | ||
b7826503 | 3184 | CHECK_STRING (string); |
078e7b4a | 3185 | |
d5db4077 KR |
3186 | tem = oblookup (obarray, SDATA (string), |
3187 | SCHARS (string), | |
3188 | SBYTES (string)); | |
cfff016d | 3189 | if (!INTEGERP (tem)) |
078e7b4a JB |
3190 | return tem; |
3191 | ||
265a9e55 | 3192 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3193 | string = Fpurecopy (string); |
3194 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3195 | |
3196 | if (EQ (obarray, initial_obarray)) | |
3197 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3198 | else | |
3199 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3200 | |
d5db4077 | 3201 | if ((SREF (string, 0) == ':') |
a458d45d | 3202 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3203 | { |
3204 | XSYMBOL (sym)->constant = 1; | |
3205 | XSYMBOL (sym)->value = sym; | |
3206 | } | |
a0549832 | 3207 | |
078e7b4a | 3208 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3209 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3210 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3211 | else | |
3212 | XSYMBOL (sym)->next = 0; | |
3213 | *ptr = sym; | |
3214 | return sym; | |
3215 | } | |
3216 | ||
3217 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3218 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3219 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3220 | symbol is searched for. | |
3221 | A second optional argument specifies the obarray to use; | |
3222 | it defaults to the value of `obarray'. */) | |
3223 | (name, obarray) | |
b55048d4 | 3224 | Lisp_Object name, obarray; |
078e7b4a | 3225 | { |
c2d47f4b | 3226 | register Lisp_Object tem, string; |
078e7b4a | 3227 | |
265a9e55 | 3228 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3229 | obarray = check_obarray (obarray); |
3230 | ||
b55048d4 GM |
3231 | if (!SYMBOLP (name)) |
3232 | { | |
b7826503 | 3233 | CHECK_STRING (name); |
c2d47f4b | 3234 | string = name; |
b55048d4 GM |
3235 | } |
3236 | else | |
c2d47f4b | 3237 | string = SYMBOL_NAME (name); |
078e7b4a | 3238 | |
c2d47f4b | 3239 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3240 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3241 | return Qnil; | |
3242 | else | |
078e7b4a | 3243 | return tem; |
078e7b4a | 3244 | } |
d007f5c8 RS |
3245 | \f |
3246 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3247 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3248 | The value is t if a symbol was found and deleted, nil otherwise. | |
3249 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3250 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3251 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3252 | (name, obarray) | |
d007f5c8 RS |
3253 | Lisp_Object name, obarray; |
3254 | { | |
3255 | register Lisp_Object string, tem; | |
3256 | int hash; | |
3257 | ||
3258 | if (NILP (obarray)) obarray = Vobarray; | |
3259 | obarray = check_obarray (obarray); | |
3260 | ||
3261 | if (SYMBOLP (name)) | |
d4c83cae | 3262 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3263 | else |
3264 | { | |
b7826503 | 3265 | CHECK_STRING (name); |
d007f5c8 RS |
3266 | string = name; |
3267 | } | |
3268 | ||
d5db4077 KR |
3269 | tem = oblookup (obarray, SDATA (string), |
3270 | SCHARS (string), | |
3271 | SBYTES (string)); | |
d007f5c8 RS |
3272 | if (INTEGERP (tem)) |
3273 | return Qnil; | |
3274 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3275 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3276 | return Qnil; | |
3277 | ||
44c6c019 GM |
3278 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3279 | XSYMBOL (tem)->constant = 0; | |
3280 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3281 | |
d007f5c8 RS |
3282 | hash = oblookup_last_bucket_number; |
3283 | ||
3284 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3285 | { |
3286 | if (XSYMBOL (tem)->next) | |
3287 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3288 | else | |
3289 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3290 | } | |
d007f5c8 RS |
3291 | else |
3292 | { | |
3293 | Lisp_Object tail, following; | |
3294 | ||
3295 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3296 | XSYMBOL (tail)->next; | |
3297 | tail = following) | |
3298 | { | |
3299 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3300 | if (EQ (following, tem)) | |
3301 | { | |
3302 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3303 | break; | |
3304 | } | |
3305 | } | |
3306 | } | |
3307 | ||
3308 | return Qt; | |
3309 | } | |
3310 | \f | |
3311 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3312 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3313 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3314 | |
3315 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3316 | |
3317 | Lisp_Object | |
e28552a4 | 3318 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3319 | Lisp_Object obarray; |
4b2dd274 | 3320 | register const char *ptr; |
e28552a4 | 3321 | int size, size_byte; |
078e7b4a | 3322 | { |
7a70b397 RS |
3323 | int hash; |
3324 | int obsize; | |
078e7b4a JB |
3325 | register Lisp_Object tail; |
3326 | Lisp_Object bucket, tem; | |
3327 | ||
cfff016d | 3328 | if (!VECTORP (obarray) |
7c79a684 | 3329 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3330 | { |
3331 | obarray = check_obarray (obarray); | |
3332 | obsize = XVECTOR (obarray)->size; | |
3333 | } | |
519418b3 RS |
3334 | /* This is sometimes needed in the middle of GC. */ |
3335 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3336 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3337 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3338 | hash %= obsize; |
3339 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3340 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3341 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3342 | ; |
cfff016d | 3343 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3344 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3345 | else |
3346 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3347 | { |
d5db4077 KR |
3348 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3349 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3350 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3351 | return tail; |
3352 | else if (XSYMBOL (tail)->next == 0) | |
3353 | break; | |
3354 | } | |
1805de4f | 3355 | XSETINT (tem, hash); |
078e7b4a JB |
3356 | return tem; |
3357 | } | |
3358 | ||
3359 | static int | |
3360 | hash_string (ptr, len) | |
4b2dd274 | 3361 | const unsigned char *ptr; |
078e7b4a JB |
3362 | int len; |
3363 | { | |
4b2dd274 KR |
3364 | register const unsigned char *p = ptr; |
3365 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3366 | register unsigned char c; |
3367 | register int hash = 0; | |
3368 | ||
3369 | while (p != end) | |
3370 | { | |
3371 | c = *p++; | |
3372 | if (c >= 0140) c -= 40; | |
3373 | hash = ((hash<<3) + (hash>>28) + c); | |
3374 | } | |
3375 | return hash & 07777777777; | |
3376 | } | |
d007f5c8 | 3377 | \f |
078e7b4a JB |
3378 | void |
3379 | map_obarray (obarray, fn, arg) | |
3380 | Lisp_Object obarray; | |
d5b28a9d | 3381 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3382 | Lisp_Object arg; |
3383 | { | |
3384 | register int i; | |
3385 | register Lisp_Object tail; | |
b7826503 | 3386 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3387 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3388 | { | |
3389 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3390 | if (SYMBOLP (tail)) |
078e7b4a JB |
3391 | while (1) |
3392 | { | |
3393 | (*fn) (tail, arg); | |
3394 | if (XSYMBOL (tail)->next == 0) | |
3395 | break; | |
1805de4f | 3396 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3397 | } |
3398 | } | |
3399 | } | |
3400 | ||
d5b28a9d | 3401 | void |
078e7b4a JB |
3402 | mapatoms_1 (sym, function) |
3403 | Lisp_Object sym, function; | |
3404 | { | |
3405 | call1 (function, sym); | |
3406 | } | |
3407 | ||
3408 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3409 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3410 | OBARRAY defaults to the value of `obarray'. */) | |
3411 | (function, obarray) | |
078e7b4a JB |
3412 | Lisp_Object function, obarray; |
3413 | { | |
265a9e55 | 3414 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3415 | obarray = check_obarray (obarray); |
3416 | ||
3417 | map_obarray (obarray, mapatoms_1, function); | |
3418 | return Qnil; | |
3419 | } | |
3420 | ||
5e88a39e | 3421 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3422 | |
3423 | void | |
3424 | init_obarray () | |
3425 | { | |
3426 | Lisp_Object oblength; | |
3427 | int hash; | |
3428 | Lisp_Object *tem; | |
3429 | ||
baf69866 | 3430 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3431 | |
491f16a2 | 3432 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3433 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3434 | initial_obarray = Vobarray; | |
3435 | staticpro (&initial_obarray); | |
3436 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3437 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3438 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3439 | |
078e7b4a JB |
3440 | /* These locals are to kludge around a pyramid compiler bug. */ |
3441 | hash = hash_string ("nil", 3); | |
3442 | /* Separate statement here to avoid VAXC bug. */ | |
3443 | hash %= OBARRAY_SIZE; | |
3444 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3445 | *tem = Qnil; | |
3446 | ||
491f16a2 | 3447 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3448 | XSYMBOL (Qnil)->function = Qunbound; |
3449 | XSYMBOL (Qunbound)->value = Qunbound; | |
3450 | XSYMBOL (Qunbound)->function = Qunbound; | |
3451 | ||
3452 | Qt = intern ("t"); | |
3453 | XSYMBOL (Qnil)->value = Qnil; | |
3454 | XSYMBOL (Qnil)->plist = Qnil; | |
3455 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3456 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3457 | |
3458 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3459 | Vpurify_flag = Qt; | |
3460 | ||
3461 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3462 | staticpro (&Qvariable_documentation); |
078e7b4a | 3463 | |
449fea39 | 3464 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3465 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3466 | } |
3467 | \f | |
3468 | void | |
3469 | defsubr (sname) | |
3470 | struct Lisp_Subr *sname; | |
3471 | { | |
3472 | Lisp_Object sym; | |
3473 | sym = intern (sname->symbol_name); | |
1805de4f | 3474 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3475 | } |
3476 | ||
3477 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3478 | void | |
3479 | defalias (sname, string) | |
3480 | struct Lisp_Subr *sname; | |
3481 | char *string; | |
3482 | { | |
3483 | Lisp_Object sym; | |
3484 | sym = intern (string); | |
1805de4f | 3485 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3486 | } |
3487 | #endif /* NOTDEF */ | |
3488 | ||
078e7b4a | 3489 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3490 | to a C variable of type int. Sample call: */ |
5de38842 | 3491 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3492 | void |
e9e00ff2 | 3493 | defvar_int (namestring, address) |
078e7b4a | 3494 | char *namestring; |
31ade731 | 3495 | EMACS_INT *address; |
078e7b4a | 3496 | { |
1a0f90f7 | 3497 | Lisp_Object sym, val; |
078e7b4a | 3498 | sym = intern (namestring); |
1a0f90f7 | 3499 | val = allocate_misc (); |
47e28b2c | 3500 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3501 | XINTFWD (val)->intvar = address; |
44c6c019 | 3502 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3503 | } |
3504 | ||
f0529b5b PJ |
3505 | /* Similar but define a variable whose value is t if address contains 1, |
3506 | nil if address contains 0 */ | |
078e7b4a | 3507 | void |
e9e00ff2 | 3508 | defvar_bool (namestring, address) |
078e7b4a JB |
3509 | char *namestring; |
3510 | int *address; | |
078e7b4a | 3511 | { |
1a0f90f7 | 3512 | Lisp_Object sym, val; |
078e7b4a | 3513 | sym = intern (namestring); |
1a0f90f7 | 3514 | val = allocate_misc (); |
47e28b2c | 3515 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3516 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3517 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3518 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3519 | } |
3520 | ||
1a0f90f7 KH |
3521 | /* Similar but define a variable whose value is the Lisp Object stored |
3522 | at address. Two versions: with and without gc-marking of the C | |
3523 | variable. The nopro version is used when that variable will be | |
3524 | gc-marked for some other reason, since marking the same slot twice | |
3525 | can cause trouble with strings. */ | |
078e7b4a | 3526 | void |
1a0f90f7 | 3527 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3528 | char *namestring; |
3529 | Lisp_Object *address; | |
078e7b4a | 3530 | { |
1a0f90f7 | 3531 | Lisp_Object sym, val; |
078e7b4a | 3532 | sym = intern (namestring); |
1a0f90f7 | 3533 | val = allocate_misc (); |
47e28b2c | 3534 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3535 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3536 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3537 | } |
3538 | ||
078e7b4a | 3539 | void |
1a0f90f7 | 3540 | defvar_lisp (namestring, address) |
078e7b4a JB |
3541 | char *namestring; |
3542 | Lisp_Object *address; | |
078e7b4a | 3543 | { |
1a0f90f7 KH |
3544 | defvar_lisp_nopro (namestring, address); |
3545 | staticpro (address); | |
078e7b4a JB |
3546 | } |
3547 | ||
078e7b4a | 3548 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3549 | the current buffer. address is the address of the slot in the buffer |
3550 | that is current now. */ | |
078e7b4a JB |
3551 | |
3552 | void | |
4360b0c6 | 3553 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3554 | char *namestring; |
3555 | Lisp_Object *address; | |
4360b0c6 | 3556 | Lisp_Object type; |
078e7b4a JB |
3557 | char *doc; |
3558 | { | |
1a0f90f7 | 3559 | Lisp_Object sym, val; |
078e7b4a | 3560 | int offset; |
078e7b4a JB |
3561 | |
3562 | sym = intern (namestring); | |
1a0f90f7 | 3563 | val = allocate_misc (); |
078e7b4a JB |
3564 | offset = (char *)address - (char *)current_buffer; |
3565 | ||
47e28b2c | 3566 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3567 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3568 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3569 | PER_BUFFER_SYMBOL (offset) = sym; |
3570 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3571 | |
11fd416e | 3572 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3573 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3574 | slot of buffer_local_flags */ | |
3575 | abort (); | |
3576 | } | |
3577 | ||
950c215d KH |
3578 | |
3579 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3580 | at a particular offset in the current kboard object. */ |
950c215d KH |
3581 | |
3582 | void | |
4ac38690 | 3583 | defvar_kboard (namestring, offset) |
950c215d KH |
3584 | char *namestring; |
3585 | int offset; | |
3586 | { | |
3587 | Lisp_Object sym, val; | |
3588 | sym = intern (namestring); | |
3589 | val = allocate_misc (); | |
47e28b2c | 3590 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3591 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3592 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3593 | } |
078e7b4a | 3594 | \f |
11938f10 KH |
3595 | /* Record the value of load-path used at the start of dumping |
3596 | so we can see if the site changed it later during dumping. */ | |
3597 | static Lisp_Object dump_path; | |
3598 | ||
d5b28a9d | 3599 | void |
279499f0 | 3600 | init_lread () |
078e7b4a | 3601 | { |
46947372 | 3602 | char *normal; |
e73997a1 | 3603 | int turn_off_warning = 0; |
078e7b4a | 3604 | |
279499f0 | 3605 | /* Compute the default load-path. */ |
46947372 JB |
3606 | #ifdef CANNOT_DUMP |
3607 | normal = PATH_LOADSEARCH; | |
e065a56e | 3608 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3609 | #else |
3610 | if (NILP (Vpurify_flag)) | |
3611 | normal = PATH_LOADSEARCH; | |
279499f0 | 3612 | else |
46947372 | 3613 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3614 | |
46947372 JB |
3615 | /* In a dumped Emacs, we normally have to reset the value of |
3616 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3617 | uses ../lisp, instead of the path of the installed elisp | |
3618 | libraries. However, if it appears that Vload_path was changed | |
3619 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3620 | if (initialized) |
3621 | { | |
4746118a | 3622 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3623 | { |
3624 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3625 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3626 | { |
3ddff138 RS |
3627 | Lisp_Object tem, tem1, sitelisp; |
3628 | ||
3629 | /* Remove site-lisp dirs from path temporarily and store | |
3630 | them in sitelisp, then conc them on at the end so | |
3631 | they're always first in path. */ | |
3632 | sitelisp = Qnil; | |
3633 | while (1) | |
3634 | { | |
3635 | tem = Fcar (Vload_path); | |
3636 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3637 | tem, Qnil); | |
3638 | if (!NILP (tem1)) | |
3639 | { | |
3640 | Vload_path = Fcdr (Vload_path); | |
3641 | sitelisp = Fcons (tem, sitelisp); | |
3642 | } | |
3643 | else | |
3644 | break; | |
3645 | } | |
3646 | ||
74180aa4 | 3647 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3648 | installation dir, if it exists. */ |
74180aa4 RS |
3649 | tem = Fexpand_file_name (build_string ("lisp"), |
3650 | Vinstallation_directory); | |
3a3056e5 RS |
3651 | tem1 = Ffile_exists_p (tem); |
3652 | if (!NILP (tem1)) | |
3653 | { | |
3654 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3655 | { |
3656 | turn_off_warning = 1; | |
3ddff138 | 3657 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3658 | } |
3a3056e5 RS |
3659 | } |
3660 | else | |
3661 | /* That dir doesn't exist, so add the build-time | |
3662 | Lisp dirs instead. */ | |
3663 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3664 | |
9fbc0116 RS |
3665 | /* Add leim under the installation dir, if it exists. */ |
3666 | tem = Fexpand_file_name (build_string ("leim"), | |
3667 | Vinstallation_directory); | |
3668 | tem1 = Ffile_exists_p (tem); | |
3669 | if (!NILP (tem1)) | |
3670 | { | |
3671 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3672 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3673 | } |
3674 | ||
c478f98c RS |
3675 | /* Add site-list under the installation dir, if it exists. */ |
3676 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3677 | Vinstallation_directory); | |
3678 | tem1 = Ffile_exists_p (tem); | |
3679 | if (!NILP (tem1)) | |
3680 | { | |
3681 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3682 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3683 | } |
0f337465 RS |
3684 | |
3685 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3686 | and it is run from where it was built, add to load-path |
3687 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3688 | |
3689 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3690 | { | |
33046fc9 RS |
3691 | Lisp_Object tem2; |
3692 | ||
0f337465 RS |
3693 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3694 | Vinstallation_directory); | |
3695 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3696 | |
3697 | /* Don't be fooled if they moved the entire source tree | |
3698 | AFTER dumping Emacs. If the build directory is indeed | |
3699 | different from the source dir, src/Makefile.in and | |
3700 | src/Makefile will not be found together. */ | |
3701 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3702 | Vinstallation_directory); | |
3703 | tem2 = Ffile_exists_p (tem); | |
3704 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3705 | { |
3706 | tem = Fexpand_file_name (build_string ("lisp"), | |
3707 | Vsource_directory); | |
3708 | ||
3709 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3710 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3711 | |
9fbc0116 RS |
3712 | tem = Fexpand_file_name (build_string ("leim"), |
3713 | Vsource_directory); | |
3714 | ||
3715 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3716 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3717 | |
0f337465 RS |
3718 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3719 | Vsource_directory); | |
3720 | ||
3721 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3722 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3723 | } |
3724 | } | |
3ddff138 RS |
3725 | if (!NILP (sitelisp)) |
3726 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3727 | } |
3728 | } | |
4746118a JB |
3729 | } |
3730 | else | |
11938f10 | 3731 | { |
7b396c6c RS |
3732 | /* NORMAL refers to the lisp dir in the source directory. */ |
3733 | /* We used to add ../lisp at the front here, but | |
3734 | that caused trouble because it was copied from dump_path | |
3735 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3736 | It should be unnecessary. */ | |
3737 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3738 | dump_path = Vload_path; |
3739 | } | |
46947372 | 3740 | #endif |
279499f0 | 3741 | |
536d6baa | 3742 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3743 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3744 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3745 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3746 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3747 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3748 | the "standard" paths may not exist and would be overridden by | |
3749 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3750 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3751 | |
078e7b4a | 3752 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3753 | if (!turn_off_warning) |
3754 | { | |
3755 | Lisp_Object path_tail; | |
078e7b4a | 3756 | |
e73997a1 RS |
3757 | for (path_tail = Vload_path; |
3758 | !NILP (path_tail); | |
c1d497be | 3759 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3760 | { |
3761 | Lisp_Object dirfile; | |
3762 | dirfile = Fcar (path_tail); | |
3763 | if (STRINGP (dirfile)) | |
3764 | { | |
3765 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3766 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3767 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3768 | XCAR (path_tail)); |
e73997a1 RS |
3769 | } |
3770 | } | |
3771 | } | |
536d6baa | 3772 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3773 | |
3774 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3775 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3776 | #ifndef CANNOT_DUMP |
46947372 JB |
3777 | if (NILP (Vpurify_flag) |
3778 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3779 | #endif |
279499f0 | 3780 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3781 | |
3782 | Vvalues = Qnil; | |
3783 | ||
078e7b4a | 3784 | load_in_progress = 0; |
4e53f562 | 3785 | Vload_file_name = Qnil; |
d2c6be7f RS |
3786 | |
3787 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3788 | |
3789 | Vstandard_input = Qt; | |
f74b0705 | 3790 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3791 | } |
3792 | ||
85496b8c RS |
3793 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3794 | does not exist. Print it on stderr and put it in *Message*. */ | |
3795 | ||
d5b28a9d | 3796 | void |
85496b8c RS |
3797 | dir_warning (format, dirname) |
3798 | char *format; | |
3799 | Lisp_Object dirname; | |
3800 | { | |
3801 | char *buffer | |
d5db4077 | 3802 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3803 | |
d5db4077 KR |
3804 | fprintf (stderr, format, SDATA (dirname)); |
3805 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
3806 | /* Don't log the warning before we've initialized!! */ |
3807 | if (initialized) | |
3808 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3809 | } |
3810 | ||
078e7b4a | 3811 | void |
279499f0 | 3812 | syms_of_lread () |
078e7b4a JB |
3813 | { |
3814 | defsubr (&Sread); | |
3815 | defsubr (&Sread_from_string); | |
3816 | defsubr (&Sintern); | |
3817 | defsubr (&Sintern_soft); | |
d007f5c8 | 3818 | defsubr (&Sunintern); |
078e7b4a | 3819 | defsubr (&Sload); |
228d4b1c | 3820 | defsubr (&Seval_buffer); |
078e7b4a JB |
3821 | defsubr (&Seval_region); |
3822 | defsubr (&Sread_char); | |
3823 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3824 | defsubr (&Sread_event); |
078e7b4a JB |
3825 | defsubr (&Sget_file_char); |
3826 | defsubr (&Smapatoms); | |
86d00812 | 3827 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
3828 | |
3829 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
3830 | doc: /* Symbol table for use by `intern' and `read'. |
3831 | It is a vector whose length ought to be prime for best results. | |
3832 | The vector's contents don't make sense if examined from Lisp programs; | |
3833 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
3834 | |
3835 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
3836 | doc: /* List of values of all expressions which were read, evaluated and printed. |
3837 | Order is reverse chronological. */); | |
078e7b4a JB |
3838 | |
3839 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
3840 | doc: /* Stream for read to get input from. |
3841 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
3842 | Vstandard_input = Qt; |
3843 | ||
abb13b09 CW |
3844 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
3845 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
3846 | ||
3847 | If this variable is a buffer, then only forms read from that buffer | |
3848 | will be added to `read-symbol-positions-list'. | |
3849 | If this variable is t, then all read forms will be added. | |
3850 | The effect of all other values other than nil are not currently | |
3851 | defined, although they may be in the future. | |
3852 | ||
3853 | The positions are relative to the last call to `read' or | |
3854 | `read-from-string'. It is probably a bad idea to set this variable at | |
3855 | the toplevel; bind it instead. */); | |
3856 | Vread_with_symbol_positions = Qnil; | |
3857 | ||
3858 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 3859 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
3860 | This variable is modified during calls to `read' or |
3861 | `read-from-string', but only when `read-with-symbol-positions' is | |
3862 | non-nil. | |
3863 | ||
3864 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 3865 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
3866 | symbol from the position where `read' or `read-from-string' started. |
3867 | ||
3868 | Note that a symbol will appear multiple times in this list, if it was | |
3869 | read multiple times. The list is in the same order as the symbols | |
3870 | were read in. */); | |
177c0ea7 | 3871 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 3872 | |
078e7b4a | 3873 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
3874 | doc: /* *List of directories to search for files to load. |
3875 | Each element is a string (directory name) or nil (try default directory). | |
3876 | Initialized based on EMACSLOADPATH environment variable, if any, | |
3877 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 3878 | |
e61b9b87 | 3879 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
5de38842 PJ |
3880 | doc: /* *List of suffixes to try for files to load. |
3881 | This list should not include the empty string. */); | |
e61b9b87 SM |
3882 | Vload_suffixes = Fcons (build_string (".elc"), |
3883 | Fcons (build_string (".el"), Qnil)); | |
ddb716ef SM |
3884 | /* We don't use empty_string because it's not initialized yet. */ |
3885 | default_suffixes = Fcons (build_string (""), Qnil); | |
e61b9b87 SM |
3886 | staticpro (&default_suffixes); |
3887 | ||
078e7b4a | 3888 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
5de38842 | 3889 | doc: /* Non-nil iff inside of `load'. */); |
078e7b4a JB |
3890 | |
3891 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 PJ |
3892 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
3893 | Each element looks like (FILENAME FORMS...). | |
3894 | When `load' is run and the file-name argument is FILENAME, | |
3895 | the FORMS in the corresponding element are executed at the end of loading. | |
3896 | ||
3897 | FILENAME must match exactly! Normally FILENAME is the name of a library, | |
3898 | with no directory specified, since that is how `load' is normally called. | |
3899 | An error in FORMS does not undo the load, | |
3900 | but does prevent execution of the rest of the FORMS. | |
3901 | FILENAME can also be a symbol (a feature) and FORMS are then executed | |
3902 | when the corresponding call to `provide' is made. */); | |
078e7b4a JB |
3903 | Vafter_load_alist = Qnil; |
3904 | ||
ae321d28 | 3905 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 3906 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
3907 | Each alist element is a list that starts with a file name, |
3908 | except for one element (optional) that starts with nil and describes | |
3909 | definitions evaluated from buffers not visiting files. | |
1bc2cdb1 | 3910 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 3911 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
1bc2cdb1 RS |
3912 | `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'. |
3913 | An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)', | |
6042a06e | 3914 | and means that SYMBOL was an autoload before this file redefined it |
0fc213e9 RS |
3915 | as a function. |
3916 | ||
b502a9a1 RS |
3917 | During preloading, the file name recorded is relative to the main Lisp |
3918 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
3919 | Vload_history = Qnil; |
3920 | ||
20ea2964 | 3921 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 3922 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
3923 | Vload_file_name = Qnil; |
3924 | ||
4116ab9f | 3925 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 3926 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
3927 | If the file loaded had extension `.elc', and the corresponding source file |
3928 | exists, this variable contains the name of source file, suitable for use | |
5de38842 | 3929 | by functions like `custom-save-all' which edit the init file. */); |
4116ab9f KH |
3930 | Vuser_init_file = Qnil; |
3931 | ||
8a1f1537 | 3932 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 3933 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
3934 | Vcurrent_load_list = Qnil; |
3935 | ||
84a15045 | 3936 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
3937 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
3938 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
3939 | Vload_read_function = Qnil; |
3940 | ||
fe0e03f3 | 3941 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
5de38842 PJ |
3942 | doc: /* Function called in `load' for loading an Emacs lisp source file. |
3943 | This function is for doing code conversion before reading the source file. | |
3944 | If nil, loading is done without any code conversion. | |
3945 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
3946 | FULLNAME is the full name of FILE. | |
3947 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
3948 | Vload_source_file_function = Qnil; |
3949 | ||
b2a30870 | 3950 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
3951 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
3952 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
3953 | load_force_doc_strings = 0; |
3954 | ||
94e554db | 3955 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
3956 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
3957 | This is normally bound by `load' and `eval-buffer' to control `read', | |
3958 | and is not meant for users to change. */); | |
94e554db RS |
3959 | load_convert_to_unibyte = 0; |
3960 | ||
1521a8fa | 3961 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
3962 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
3963 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
3964 | Vsource_directory |
3965 | = Fexpand_file_name (build_string ("../"), | |
3966 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
3967 | ||
4b104c41 | 3968 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 3969 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
3970 | Vpreloaded_file_list = Qnil; |
3971 | ||
1ffcc3b1 | 3972 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 3973 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
3974 | Vbyte_boolean_vars = Qnil; |
3975 | ||
da84f340 | 3976 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
3977 | doc: /* Non-nil means load dangerous compiled Lisp files. |
3978 | Some versions of XEmacs use different byte codes than Emacs. These | |
3979 | incompatible byte codes can make Emacs crash when it tries to execute | |
3980 | them. */); | |
da84f340 GM |
3981 | load_dangerous_libraries = 0; |
3982 | ||
bb970e67 | 3983 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
3984 | doc: /* Regular expression matching safe to load compiled Lisp files. |
3985 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
3986 | from the file, and matches them against this regular expression. | |
3987 | When the regular expression matches, the file is considered to be safe | |
3988 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 3989 | Vbytecomp_version_regexp |
f2e7d5eb | 3990 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 3991 | |
3f39f996 RS |
3992 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
3993 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
3994 | Veval_buffer_list = Qnil; | |
3995 | ||
a90ba1e2 KH |
3996 | /* Vsource_directory was initialized in init_lread. */ |
3997 | ||
d2c6be7f RS |
3998 | load_descriptor_list = Qnil; |
3999 | staticpro (&load_descriptor_list); | |
4000 | ||
8a1f1537 RS |
4001 | Qcurrent_load_list = intern ("current-load-list"); |
4002 | staticpro (&Qcurrent_load_list); | |
4003 | ||
078e7b4a JB |
4004 | Qstandard_input = intern ("standard-input"); |
4005 | staticpro (&Qstandard_input); | |
4006 | ||
4007 | Qread_char = intern ("read-char"); | |
4008 | staticpro (&Qread_char); | |
4009 | ||
4010 | Qget_file_char = intern ("get-file-char"); | |
4011 | staticpro (&Qget_file_char); | |
7bd279cd | 4012 | |
17634846 RS |
4013 | Qbackquote = intern ("`"); |
4014 | staticpro (&Qbackquote); | |
4015 | Qcomma = intern (","); | |
4016 | staticpro (&Qcomma); | |
4017 | Qcomma_at = intern (",@"); | |
4018 | staticpro (&Qcomma_at); | |
4019 | Qcomma_dot = intern (",."); | |
4020 | staticpro (&Qcomma_dot); | |
4021 | ||
74549846 RS |
4022 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4023 | staticpro (&Qinhibit_file_name_operation); | |
4024 | ||
7bd279cd RS |
4025 | Qascii_character = intern ("ascii-character"); |
4026 | staticpro (&Qascii_character); | |
c2225d00 | 4027 | |
2b6cae0c RS |
4028 | Qfunction = intern ("function"); |
4029 | staticpro (&Qfunction); | |
4030 | ||
c2225d00 RS |
4031 | Qload = intern ("load"); |
4032 | staticpro (&Qload); | |
20ea2964 RS |
4033 | |
4034 | Qload_file_name = intern ("load-file-name"); | |
4035 | staticpro (&Qload_file_name); | |
11938f10 | 4036 | |
3f39f996 RS |
4037 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4038 | staticpro (&Qeval_buffer_list); | |
4039 | ||
11938f10 | 4040 | staticpro (&dump_path); |
4ad679f9 EN |
4041 | |
4042 | staticpro (&read_objects); | |
4043 | read_objects = Qnil; | |
9e062b6c | 4044 | staticpro (&seen_list); |
f153db13 | 4045 | seen_list = Qnil; |
177c0ea7 | 4046 | |
7ee3bd7b GM |
4047 | Vloads_in_progress = Qnil; |
4048 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4049 | } |
ab5796a9 MB |
4050 | |
4051 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4052 | (do not change this comment) */ |