Commit | Line | Data |
---|---|---|
078e7b4a | 1 | /* Lisp parsing and input streams. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
8cabe764 | 4 | 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
078e7b4a JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
078e7b4a JB |
22 | |
23 | ||
98280b76 | 24 | #include <config.h> |
078e7b4a JB |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/file.h> | |
2c1b5dbe | 29 | #include <errno.h> |
b3e6f69c | 30 | #include <setjmp.h> |
078e7b4a | 31 | #include "lisp.h" |
95384e1e | 32 | #include "intervals.h" |
078e7b4a | 33 | #include "buffer.h" |
1571601b | 34 | #include "character.h" |
fe0e03f3 | 35 | #include "charset.h" |
8792be66 | 36 | #include "coding.h" |
57bda87a | 37 | #include <epaths.h> |
078e7b4a | 38 | #include "commands.h" |
e37c0805 | 39 | #include "keyboard.h" |
428a555e | 40 | #include "frame.h" |
7bd279cd | 41 | #include "termhooks.h" |
eb191db2 | 42 | #include "coding.h" |
66cd0949 | 43 | #include "blockinput.h" |
078e7b4a | 44 | |
79051982 RS |
45 | #ifdef MSDOS |
46 | #if __DJGPP__ < 2 | |
47 | #include <unistd.h> /* to get X_OK */ | |
48 | #endif | |
49 | #include "msdos.h" | |
50 | #endif | |
51 | ||
c1a2f60a AS |
52 | #ifdef HAVE_UNISTD_H |
53 | #include <unistd.h> | |
54 | #endif | |
55 | ||
078e7b4a JB |
56 | #ifndef X_OK |
57 | #define X_OK 01 | |
58 | #endif | |
59 | ||
078e7b4a | 60 | #include <math.h> |
078e7b4a | 61 | |
c011e9a5 RS |
62 | #ifdef HAVE_SETLOCALE |
63 | #include <locale.h> | |
64 | #endif /* HAVE_SETLOCALE */ | |
65 | ||
bcdec28b DL |
66 | #ifdef HAVE_FCNTL_H |
67 | #include <fcntl.h> | |
68 | #endif | |
f7d279f0 RS |
69 | #ifndef O_RDONLY |
70 | #define O_RDONLY 0 | |
71 | #endif | |
72 | ||
79cf851c | 73 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
74 | #define file_offset off_t |
75 | #define file_tell ftello | |
76 | #else | |
77 | #define file_offset long | |
78 | #define file_tell ftell | |
79 | #endif | |
80 | ||
03695ace | 81 | #ifndef USE_CRT_DLL |
2c1b5dbe | 82 | extern int errno; |
03695ace | 83 | #endif |
2c1b5dbe | 84 | |
8a1f1537 | 85 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 86 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 87 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 88 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 89 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 90 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
6bb6da3e | 91 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 92 | |
8792be66 KH |
93 | /* Used instead of Qget_file_char while loading *.elc files compiled |
94 | by Emacs 21 or older. */ | |
95 | static Lisp_Object Qget_emacs_mule_file_char; | |
96 | ||
97 | static Lisp_Object Qload_force_doc_strings; | |
98 | ||
7bd279cd | 99 | extern Lisp_Object Qevent_symbol_element_mask; |
74549846 | 100 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 101 | |
e0f24100 | 102 | /* non-zero if inside `load' */ |
078e7b4a JB |
103 | int load_in_progress; |
104 | ||
1521a8fa RS |
105 | /* Directory in which the sources were found. */ |
106 | Lisp_Object Vsource_directory; | |
107 | ||
e61b9b87 | 108 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 109 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 110 | |
4116ab9f KH |
111 | /* File name of user's init file. */ |
112 | Lisp_Object Vuser_init_file; | |
113 | ||
ae321d28 RS |
114 | /* This is the user-visible association list that maps features to |
115 | lists of defs in their load files. */ | |
116 | Lisp_Object Vload_history; | |
117 | ||
20ea2964 | 118 | /* This is used to build the load history. */ |
ae321d28 RS |
119 | Lisp_Object Vcurrent_load_list; |
120 | ||
4b104c41 RS |
121 | /* List of files that were preloaded. */ |
122 | Lisp_Object Vpreloaded_file_list; | |
123 | ||
20ea2964 RS |
124 | /* Name of file actually being read by `load'. */ |
125 | Lisp_Object Vload_file_name; | |
126 | ||
84a15045 RS |
127 | /* Function to use for reading, in `load' and friends. */ |
128 | Lisp_Object Vload_read_function; | |
129 | ||
4ad679f9 EN |
130 | /* The association list of objects read with the #n=object form. |
131 | Each member of the list has the form (n . object), and is used to | |
132 | look up the object for the corresponding #n# construct. | |
133 | It must be set to nil before all top-level calls to read0. */ | |
134 | Lisp_Object read_objects; | |
135 | ||
b2a30870 RS |
136 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
137 | static int load_force_doc_strings; | |
138 | ||
94e554db RS |
139 | /* Nonzero means read should convert strings to unibyte. */ |
140 | static int load_convert_to_unibyte; | |
141 | ||
8792be66 KH |
142 | /* Nonzero means READCHAR should read bytes one by one (not character) |
143 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
144 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
145 | static int load_each_byte; | |
146 | ||
9b33a603 | 147 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
148 | compiled) instead of readevalloop. */ |
149 | Lisp_Object Vload_source_file_function; | |
150 | ||
1ffcc3b1 DL |
151 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
152 | Lisp_Object Vbyte_boolean_vars; | |
153 | ||
abb13b09 CW |
154 | /* Whether or not to add a `read-positions' property to symbols |
155 | read. */ | |
156 | Lisp_Object Vread_with_symbol_positions; | |
157 | ||
158 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
159 | Lisp_Object Vread_symbol_positions_list; | |
160 | ||
d2c6be7f RS |
161 | /* List of descriptors now open for Fload. */ |
162 | static Lisp_Object load_descriptor_list; | |
163 | ||
b2a30870 | 164 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
165 | static FILE *instream; |
166 | ||
167 | /* When nonzero, read conses in pure space */ | |
168 | static int read_pure; | |
169 | ||
b2a30870 | 170 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 171 | static int read_from_string_index; |
bed23cb2 | 172 | static int read_from_string_index_byte; |
078e7b4a | 173 | static int read_from_string_limit; |
17634846 | 174 | |
abb13b09 CW |
175 | /* Number of characters read in the current call to Fread or |
176 | Fread_from_string. */ | |
177 | static int readchar_count; | |
6f7f43d5 | 178 | |
c15cfd1f | 179 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
180 | static char *saved_doc_string; |
181 | /* Length of buffer allocated in saved_doc_string. */ | |
182 | static int saved_doc_string_size; | |
183 | /* Length of actual data in saved_doc_string. */ | |
184 | static int saved_doc_string_length; | |
185 | /* This is the file position that string came from. */ | |
68c45bf0 | 186 | static file_offset saved_doc_string_position; |
b2a30870 | 187 | |
c15cfd1f RS |
188 | /* This contains the previous string skipped with #@. |
189 | We copy it from saved_doc_string when a new string | |
190 | is put in saved_doc_string. */ | |
191 | static char *prev_saved_doc_string; | |
192 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
193 | static int prev_saved_doc_string_size; | |
194 | /* Length of actual data in prev_saved_doc_string. */ | |
195 | static int prev_saved_doc_string_length; | |
196 | /* This is the file position that string came from. */ | |
68c45bf0 | 197 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 198 | |
17634846 RS |
199 | /* Nonzero means inside a new-style backquote |
200 | with no surrounding parentheses. | |
201 | Fread initializes this to zero, so we need not specbind it | |
202 | or worry about what happens to it when there is an error. */ | |
203 | static int new_backquote_flag; | |
1d064697 | 204 | static Lisp_Object Vold_style_backquotes, Qold_style_backquotes; |
7ee3bd7b GM |
205 | |
206 | /* A list of file names for files being loaded in Fload. Used to | |
207 | check for recursive loads. */ | |
208 | ||
9942fa0c | 209 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 210 | |
550a625e GM |
211 | /* Non-zero means load dangerous compiled Lisp files. */ |
212 | ||
213 | int load_dangerous_libraries; | |
214 | ||
215 | /* A regular expression used to detect files compiled with Emacs. */ | |
216 | ||
217 | static Lisp_Object Vbytecomp_version_regexp; | |
218 | ||
8792be66 KH |
219 | static int read_emacs_mule_char P_ ((int, int (*) (int, Lisp_Object), |
220 | Lisp_Object)); | |
221 | ||
11d89e5d | 222 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 223 | Lisp_Object (*) (), int, |
4c03c46d | 224 | Lisp_Object, Lisp_Object, |
550a625e GM |
225 | Lisp_Object, Lisp_Object)); |
226 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
227 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
228 | ||
336d4a9c | 229 | static void invalid_syntax P_ ((const char *, int)) NO_RETURN; |
2381d38d | 230 | static void end_of_file_error P_ (()) NO_RETURN; |
336d4a9c | 231 | |
078e7b4a | 232 | \f |
8792be66 KH |
233 | /* Functions that read one byte from the current source READCHARFUN |
234 | or unreads one byte. If the integer argument C is -1, it returns | |
235 | one read byte, or -1 when there's no more byte in the source. If C | |
236 | is 0 or positive, it unreads C, and the return value is not | |
237 | interesting. */ | |
238 | ||
239 | static int readbyte_for_lambda P_ ((int, Lisp_Object)); | |
240 | static int readbyte_from_file P_ ((int, Lisp_Object)); | |
241 | static int readbyte_from_string P_ ((int, Lisp_Object)); | |
242 | ||
078e7b4a JB |
243 | /* Handle unreading and rereading of characters. |
244 | Write READCHAR to read a character, | |
fe0e03f3 KH |
245 | UNREAD(c) to unread c to be read again. |
246 | ||
8792be66 | 247 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 248 | |
1202434b | 249 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
250 | #define UNREAD(c) unreadchar (readcharfun, c) |
251 | ||
1202434b KH |
252 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
253 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
254 | ||
8792be66 | 255 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
256 | Qlambda, or a cons, we use this to keep an unread character because |
257 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
258 | means that there's no unread character. */ |
259 | static int unread_char; | |
260 | ||
078e7b4a | 261 | static int |
1202434b | 262 | readchar (readcharfun, multibyte) |
078e7b4a | 263 | Lisp_Object readcharfun; |
1202434b | 264 | int *multibyte; |
078e7b4a JB |
265 | { |
266 | Lisp_Object tem; | |
95384e1e | 267 | register int c; |
8792be66 KH |
268 | int (*readbyte) P_ ((int, Lisp_Object)); |
269 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; | |
270 | int i, len; | |
271 | int emacs_mule_encoding = 0; | |
078e7b4a | 272 | |
1202434b KH |
273 | if (multibyte) |
274 | *multibyte = 0; | |
275 | ||
abb13b09 | 276 | readchar_count++; |
177c0ea7 | 277 | |
cfff016d | 278 | if (BUFFERP (readcharfun)) |
078e7b4a | 279 | { |
bed23cb2 | 280 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 281 | |
bed23cb2 | 282 | int pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 283 | |
bed23cb2 RS |
284 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
285 | return -1; | |
078e7b4a | 286 | |
bed23cb2 RS |
287 | if (! NILP (inbuffer->enable_multibyte_characters)) |
288 | { | |
00a9a935 | 289 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
290 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
291 | BUF_INC_POS (inbuffer, pt_byte); | |
292 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
1202434b KH |
293 | if (multibyte) |
294 | *multibyte = 1; | |
bed23cb2 RS |
295 | } |
296 | else | |
297 | { | |
298 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
299 | if (! ASCII_BYTE_P (c)) |
300 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 301 | pt_byte++; |
6f7f43d5 | 302 | } |
bed23cb2 | 303 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 304 | |
bed23cb2 | 305 | return c; |
078e7b4a | 306 | } |
cfff016d | 307 | if (MARKERP (readcharfun)) |
078e7b4a | 308 | { |
bed23cb2 | 309 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 310 | |
bed23cb2 | 311 | int bytepos = marker_byte_position (readcharfun); |
00a9a935 | 312 | |
bed23cb2 RS |
313 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
314 | return -1; | |
6f7f43d5 | 315 | |
bed23cb2 RS |
316 | if (! NILP (inbuffer->enable_multibyte_characters)) |
317 | { | |
00a9a935 | 318 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
319 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
320 | BUF_INC_POS (inbuffer, bytepos); | |
321 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
1202434b KH |
322 | if (multibyte) |
323 | *multibyte = 1; | |
bed23cb2 RS |
324 | } |
325 | else | |
326 | { | |
327 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
328 | if (! ASCII_BYTE_P (c)) |
329 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 330 | bytepos++; |
6f7f43d5 RS |
331 | } |
332 | ||
bed23cb2 RS |
333 | XMARKER (readcharfun)->bytepos = bytepos; |
334 | XMARKER (readcharfun)->charpos++; | |
335 | ||
336 | return c; | |
078e7b4a | 337 | } |
ad0153e4 RS |
338 | |
339 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
340 | { |
341 | readbyte = readbyte_for_lambda; | |
342 | goto read_multibyte; | |
343 | } | |
ad0153e4 | 344 | |
078e7b4a | 345 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 346 | { |
8792be66 KH |
347 | readbyte = readbyte_from_file; |
348 | goto read_multibyte; | |
2c1b5dbe | 349 | } |
078e7b4a | 350 | |
cfff016d | 351 | if (STRINGP (readcharfun)) |
078e7b4a | 352 | { |
bed23cb2 | 353 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 354 | c = -1; |
1202434b KH |
355 | else if (STRING_MULTIBYTE (readcharfun)) |
356 | { | |
357 | if (multibyte) | |
358 | *multibyte = 1; | |
359 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
360 | read_from_string_index, | |
361 | read_from_string_index_byte); | |
362 | } | |
f0354c03 | 363 | else |
1202434b KH |
364 | { |
365 | c = SREF (readcharfun, read_from_string_index_byte); | |
366 | read_from_string_index++; | |
367 | read_from_string_index_byte++; | |
368 | } | |
078e7b4a JB |
369 | return c; |
370 | } | |
371 | ||
8792be66 KH |
372 | if (CONSP (readcharfun)) |
373 | { | |
374 | /* This is the case that read_vector is reading from a unibyte | |
375 | string that contains a byte sequence previously skipped | |
376 | because of #@NUMBER. The car part of readcharfun is that | |
377 | string, and the cdr part is a value of readcharfun given to | |
378 | read_vector. */ | |
379 | readbyte = readbyte_from_string; | |
380 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
381 | emacs_mule_encoding = 1; | |
382 | goto read_multibyte; | |
383 | } | |
8f924df7 | 384 | |
8792be66 KH |
385 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
386 | { | |
387 | readbyte = readbyte_from_file; | |
388 | emacs_mule_encoding = 1; | |
389 | goto read_multibyte; | |
390 | } | |
078e7b4a JB |
391 | |
392 | tem = call0 (readcharfun); | |
393 | ||
265a9e55 | 394 | if (NILP (tem)) |
078e7b4a JB |
395 | return -1; |
396 | return XINT (tem); | |
8792be66 KH |
397 | |
398 | read_multibyte: | |
399 | if (unread_char >= 0) | |
400 | { | |
401 | c = unread_char; | |
402 | unread_char = -1; | |
403 | return c; | |
404 | } | |
405 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
406 | if (c < 0 || load_each_byte) |
407 | return c; | |
408 | if (multibyte) | |
409 | *multibyte = 1; | |
410 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
411 | return c; |
412 | if (emacs_mule_encoding) | |
413 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
414 | i = 0; | |
415 | buf[i++] = c; | |
416 | len = BYTES_BY_CHAR_HEAD (c); | |
417 | while (i < len) | |
418 | { | |
419 | c = (*readbyte) (-1, readcharfun); | |
420 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
421 | { | |
422 | while (--i > 1) | |
423 | (*readbyte) (buf[i], readcharfun); | |
424 | return BYTE8_TO_CHAR (buf[0]); | |
425 | } | |
426 | buf[i++] = c; | |
427 | } | |
428 | return STRING_CHAR (buf, i); | |
078e7b4a JB |
429 | } |
430 | ||
431 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
432 | If the stream is a user function, call it with the char as argument. */ | |
433 | ||
434 | static void | |
435 | unreadchar (readcharfun, c) | |
436 | Lisp_Object readcharfun; | |
437 | int c; | |
438 | { | |
abb13b09 | 439 | readchar_count--; |
92fddec9 KH |
440 | if (c == -1) |
441 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
442 | since readchar didn't advance it when we read it. */ | |
443 | ; | |
cfff016d | 444 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 445 | { |
bed23cb2 RS |
446 | struct buffer *b = XBUFFER (readcharfun); |
447 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 448 | |
8792be66 KH |
449 | BUF_PT (b)--; |
450 | if (! NILP (b->enable_multibyte_characters)) | |
451 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 452 | else |
8792be66 | 453 | bytepos--; |
d7760ca9 | 454 | |
8792be66 | 455 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 456 | } |
cfff016d | 457 | else if (MARKERP (readcharfun)) |
d7760ca9 | 458 | { |
bed23cb2 RS |
459 | struct buffer *b = XMARKER (readcharfun)->buffer; |
460 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 461 | |
8792be66 KH |
462 | XMARKER (readcharfun)->charpos--; |
463 | if (! NILP (b->enable_multibyte_characters)) | |
464 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 465 | else |
8792be66 | 466 | bytepos--; |
d7760ca9 | 467 | |
8792be66 | 468 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 469 | } |
cfff016d | 470 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
471 | { |
472 | read_from_string_index--; | |
473 | read_from_string_index_byte | |
474 | = string_char_to_byte (readcharfun, read_from_string_index); | |
475 | } | |
8792be66 KH |
476 | else if (CONSP (readcharfun)) |
477 | { | |
478 | unread_char = c; | |
479 | } | |
ad0153e4 | 480 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
481 | { |
482 | unread_char = c; | |
483 | } | |
484 | else if (EQ (readcharfun, Qget_file_char) | |
485 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
486 | { | |
487 | if (load_each_byte) | |
d85d3839 MB |
488 | { |
489 | BLOCK_INPUT; | |
490 | ungetc (c, instream); | |
491 | UNBLOCK_INPUT; | |
492 | } | |
8792be66 KH |
493 | else |
494 | unread_char = c; | |
495 | } | |
078e7b4a JB |
496 | else |
497 | call1 (readcharfun, make_number (c)); | |
498 | } | |
499 | ||
8792be66 KH |
500 | static int |
501 | readbyte_for_lambda (c, readcharfun) | |
502 | int c; | |
503 | Lisp_Object readcharfun; | |
504 | { | |
505 | return read_bytecode_char (c >= 0); | |
506 | } | |
507 | ||
508 | ||
509 | static int | |
510 | readbyte_from_file (c, readcharfun) | |
511 | int c; | |
512 | Lisp_Object readcharfun; | |
513 | { | |
514 | if (c >= 0) | |
515 | { | |
66cd0949 | 516 | BLOCK_INPUT; |
8792be66 | 517 | ungetc (c, instream); |
66cd0949 | 518 | UNBLOCK_INPUT; |
8792be66 KH |
519 | return 0; |
520 | } | |
521 | ||
d85d3839 | 522 | BLOCK_INPUT; |
8792be66 | 523 | c = getc (instream); |
d85d3839 | 524 | |
8792be66 | 525 | #ifdef EINTR |
d85d3839 MB |
526 | /* Interrupted reads have been observed while reading over the network */ |
527 | while (c == EOF && ferror (instream) && errno == EINTR) | |
528 | { | |
57cb2e6f | 529 | UNBLOCK_INPUT; |
d85d3839 | 530 | QUIT; |
d85d3839 | 531 | BLOCK_INPUT; |
57cb2e6f | 532 | clearerr (instream); |
d85d3839 | 533 | c = getc (instream); |
66cd0949 | 534 | } |
8792be66 | 535 | #endif |
d85d3839 | 536 | |
57cb2e6f MB |
537 | UNBLOCK_INPUT; |
538 | ||
8792be66 KH |
539 | return (c == EOF ? -1 : c); |
540 | } | |
541 | ||
542 | static int | |
543 | readbyte_from_string (c, readcharfun) | |
544 | int c; | |
545 | Lisp_Object readcharfun; | |
546 | { | |
547 | Lisp_Object string = XCAR (readcharfun); | |
548 | ||
549 | if (c >= 0) | |
550 | { | |
551 | read_from_string_index--; | |
552 | read_from_string_index_byte | |
553 | = string_char_to_byte (string, read_from_string_index); | |
554 | } | |
8f924df7 | 555 | |
8792be66 KH |
556 | if (read_from_string_index >= read_from_string_limit) |
557 | c = -1; | |
558 | else | |
559 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
560 | read_from_string_index, | |
561 | read_from_string_index_byte); | |
562 | return c; | |
563 | } | |
564 | ||
565 | ||
566 | /* Read one non-ASCII character from INSTREAM. The character is | |
567 | encoded in `emacs-mule' and the first byte is already read in | |
568 | C. */ | |
569 | ||
570 | extern char emacs_mule_bytes[256]; | |
571 | ||
572 | static int | |
573 | read_emacs_mule_char (c, readbyte, readcharfun) | |
574 | int c; | |
575 | int (*readbyte) P_ ((int, Lisp_Object)); | |
576 | Lisp_Object readcharfun; | |
577 | { | |
578 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
579 | unsigned char buf[4]; | |
580 | int len = emacs_mule_bytes[c]; | |
581 | struct charset *charset; | |
582 | int i; | |
583 | unsigned code; | |
584 | ||
585 | if (len == 1) | |
586 | /* C is not a valid leading-code of `emacs-mule'. */ | |
587 | return BYTE8_TO_CHAR (c); | |
588 | ||
589 | i = 0; | |
590 | buf[i++] = c; | |
591 | while (i < len) | |
592 | { | |
593 | c = (*readbyte) (-1, readcharfun); | |
594 | if (c < 0xA0) | |
595 | { | |
596 | while (--i > 1) | |
597 | (*readbyte) (buf[i], readcharfun); | |
598 | return BYTE8_TO_CHAR (buf[0]); | |
599 | } | |
600 | buf[i++] = c; | |
601 | } | |
602 | ||
603 | if (len == 2) | |
604 | { | |
da6b532c | 605 | charset = emacs_mule_charset[buf[0]]; |
8792be66 KH |
606 | code = buf[1] & 0x7F; |
607 | } | |
608 | else if (len == 3) | |
609 | { | |
610 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
611 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
612 | { | |
613 | charset = emacs_mule_charset[buf[1]]; | |
614 | code = buf[2] & 0x7F; | |
615 | } | |
616 | else | |
617 | { | |
618 | charset = emacs_mule_charset[buf[0]]; | |
619 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; | |
620 | } | |
621 | } | |
622 | else | |
623 | { | |
624 | charset = emacs_mule_charset[buf[1]]; | |
8f924df7 | 625 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
626 | } |
627 | c = DECODE_CHAR (charset, code); | |
628 | if (c < 0) | |
629 | Fsignal (Qinvalid_read_syntax, | |
630 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
631 | return c; | |
632 | } | |
633 | ||
634 | ||
abb13b09 CW |
635 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
636 | Lisp_Object)); | |
637 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 638 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
639 | |
640 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
641 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
abb13b09 CW |
642 | |
643 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
644 | Lisp_Object)); | |
645 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
646 | Lisp_Object)); | |
647 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 648 | |
078e7b4a | 649 | \f |
bed23cb2 | 650 | /* Get a character from the tty. */ |
078e7b4a | 651 | |
f42be754 JB |
652 | /* Read input events until we get one that's acceptable for our purposes. |
653 | ||
654 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
655 | until we get a character we like, and then stuffed into | |
656 | unread_switch_frame. | |
657 | ||
658 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
659 | if the unmodified version of the symbol has a Qascii_character | |
660 | property, and use that character, if present. | |
661 | ||
662 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
663 | get isn't an ASCII character with modifiers. If it's zero but | |
664 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
665 | character. |
666 | ||
667 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
668 | if the character warrants that. |
669 | ||
670 | If SECONDS is a number, we wait that many seconds for input, and | |
671 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 672 | |
f42be754 | 673 | Lisp_Object |
bb49a192 | 674 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
50e48299 | 675 | input_method, seconds) |
bb49a192 | 676 | int no_switch_frame, ascii_required, error_nonascii, input_method; |
50e48299 | 677 | Lisp_Object seconds; |
f42be754 | 678 | { |
4332cf50 | 679 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 680 | EMACS_TIME end_time; |
153a17b7 | 681 | |
5dbf89bc | 682 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
683 | if (display_hourglass_p) |
684 | cancel_hourglass (); | |
5dbf89bc | 685 | #endif |
177c0ea7 | 686 | |
153a17b7 | 687 | delayed_switch_frame = Qnil; |
f42be754 | 688 | |
50e48299 CY |
689 | /* Compute timeout. */ |
690 | if (NUMBERP (seconds)) | |
691 | { | |
692 | EMACS_TIME wait_time; | |
693 | int sec, usec; | |
51d8b30e | 694 | double duration = extract_float (seconds); |
50e48299 CY |
695 | |
696 | sec = (int) duration; | |
697 | usec = (duration - sec) * 1000000; | |
698 | EMACS_GET_TIME (end_time); | |
699 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
700 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
701 | } | |
702 | ||
251bc578 | 703 | /* Read until we get an acceptable event. */ |
f42be754 | 704 | retry: |
88852d45 | 705 | do |
251bc578 KL |
706 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
707 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 708 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 709 | |
cfff016d | 710 | if (BUFFERP (val)) |
6c82d689 KH |
711 | goto retry; |
712 | ||
f42be754 | 713 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 714 | character. This is better than signaling an error just because |
f42be754 JB |
715 | the last characters were typed to a separate minibuffer frame, |
716 | for example. Eventually, some code which can deal with | |
717 | switch-frame events will read it and process it. */ | |
718 | if (no_switch_frame | |
719 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 720 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
721 | { |
722 | delayed_switch_frame = val; | |
723 | goto retry; | |
724 | } | |
725 | ||
50e48299 | 726 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
727 | { |
728 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 729 | if (SYMBOLP (val)) |
f42be754 | 730 | { |
95384e1e | 731 | Lisp_Object tem, tem1; |
f42be754 JB |
732 | tem = Fget (val, Qevent_symbol_element_mask); |
733 | if (!NILP (tem)) | |
734 | { | |
735 | tem1 = Fget (Fcar (tem), Qascii_character); | |
736 | /* Merge this symbol's modifier bits | |
737 | with the ASCII equivalent of its basic code. */ | |
738 | if (!NILP (tem1)) | |
baf69866 | 739 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
740 | } |
741 | } | |
177c0ea7 | 742 | |
f42be754 | 743 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 744 | if (!INTEGERP (val)) |
f42be754 JB |
745 | { |
746 | if (error_nonascii) | |
747 | { | |
1ec84625 | 748 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
749 | error ("Non-character input-event"); |
750 | } | |
751 | else | |
752 | goto retry; | |
753 | } | |
754 | } | |
755 | ||
756 | if (! NILP (delayed_switch_frame)) | |
757 | unread_switch_frame = delayed_switch_frame; | |
758 | ||
67868d27 PJ |
759 | #if 0 |
760 | ||
5dbf89bc | 761 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
762 | if (display_hourglass_p) |
763 | start_hourglass (); | |
5dbf89bc | 764 | #endif |
67868d27 PJ |
765 | |
766 | #endif | |
767 | ||
f42be754 | 768 | return val; |
f42be754 JB |
769 | } |
770 | ||
50e48299 | 771 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
772 | doc: /* Read a character from the command input (keyboard or macro). |
773 | It is returned as a number. | |
fb26c2af KH |
774 | If the character has modifiers, they are resolved and reflected to the |
775 | character code if possible (e.g. C-SPC -> 0). | |
776 | ||
5de38842 PJ |
777 | If the user generates an event which is not a character (i.e. a mouse |
778 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
779 | exception, switch-frame events are put off until non-character events |
780 | can be read. | |
5de38842 PJ |
781 | If you want to read non-character events, or ignore them, call |
782 | `read-event' or `read-char-exclusive' instead. | |
783 | ||
784 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
785 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
786 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
787 | is used for reading a character. |
788 | If the optional argument SECONDS is non-nil, it should be a number | |
789 | specifying the maximum number of seconds to wait for input. If no | |
790 | input arrives in that time, return nil. SECONDS may be a | |
791 | floating-point value. */) | |
792 | (prompt, inherit_input_method, seconds) | |
793 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 794 | { |
fb26c2af KH |
795 | Lisp_Object val; |
796 | int c; | |
797 | ||
bb49a192 RS |
798 | if (! NILP (prompt)) |
799 | message_with_string ("%s", prompt, 0); | |
fb26c2af KH |
800 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
801 | c = XINT (val); | |
802 | return make_number (char_resolve_modifier_mask (c)); | |
078e7b4a JB |
803 | } |
804 | ||
50e48299 | 805 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
806 | doc: /* Read an event object from the input stream. |
807 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
808 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
809 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
810 | is used for reading a character. |
811 | If the optional argument SECONDS is non-nil, it should be a number | |
812 | specifying the maximum number of seconds to wait for input. If no | |
813 | input arrives in that time, return nil. SECONDS may be a | |
814 | floating-point value. */) | |
815 | (prompt, inherit_input_method, seconds) | |
816 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 817 | { |
bb49a192 RS |
818 | if (! NILP (prompt)) |
819 | message_with_string ("%s", prompt, 0); | |
50e48299 | 820 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
821 | } |
822 | ||
50e48299 | 823 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
824 | doc: /* Read a character from the command input (keyboard or macro). |
825 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
826 | If the character has modifiers, they are resolved and reflected to the |
827 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
828 | |
829 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
830 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
831 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
832 | is used for reading a character. |
833 | If the optional argument SECONDS is non-nil, it should be a number | |
834 | specifying the maximum number of seconds to wait for input. If no | |
835 | input arrives in that time, return nil. SECONDS may be a | |
836 | floating-point value. */) | |
837 | (prompt, inherit_input_method, seconds) | |
838 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 839 | { |
fb26c2af KH |
840 | Lisp_Object val; |
841 | int c; | |
842 | ||
bb49a192 RS |
843 | if (! NILP (prompt)) |
844 | message_with_string ("%s", prompt, 0); | |
fb26c2af KH |
845 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
846 | c = XINT (val); | |
847 | return make_number (char_resolve_modifier_mask (c)); | |
078e7b4a | 848 | } |
078e7b4a JB |
849 | |
850 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
851 | doc: /* Don't use this yourself. */) |
852 | () | |
078e7b4a JB |
853 | { |
854 | register Lisp_Object val; | |
66cd0949 | 855 | BLOCK_INPUT; |
1805de4f | 856 | XSETINT (val, getc (instream)); |
66cd0949 | 857 | UNBLOCK_INPUT; |
078e7b4a JB |
858 | return val; |
859 | } | |
da84f340 GM |
860 | |
861 | ||
550a625e | 862 | \f |
8792be66 | 863 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 864 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
865 | safe to load. Only files compiled with Emacs are safe to load. |
866 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
867 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
868 | |
869 | static int | |
870 | safe_to_load_p (fd) | |
871 | int fd; | |
872 | { | |
873 | char buf[512]; | |
874 | int nbytes, i; | |
875 | int safe_p = 1; | |
8f924df7 | 876 | int version = 1; |
da84f340 GM |
877 | |
878 | /* Read the first few bytes from the file, and look for a line | |
879 | specifying the byte compiler version used. */ | |
880 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
881 | if (nbytes > 0) | |
882 | { | |
883 | buf[nbytes] = '\0'; | |
884 | ||
885 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 886 | with NUL bytes following it, but note the version. */ |
da84f340 | 887 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 888 | if (i == 4) |
8792be66 | 889 | version = buf[i]; |
da84f340 | 890 | |
927f12da KH |
891 | if (i == nbytes |
892 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
893 | buf + i) < 0) |
894 | safe_p = 0; | |
895 | } | |
1da3b9e4 DL |
896 | if (safe_p) |
897 | safe_p = version; | |
da84f340 GM |
898 | |
899 | lseek (fd, 0, SEEK_SET); | |
900 | return safe_p; | |
901 | } | |
902 | ||
903 | ||
7ee3bd7b GM |
904 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
905 | after loading a file successfully. */ | |
906 | ||
907 | static Lisp_Object | |
908 | record_load_unwind (old) | |
909 | Lisp_Object old; | |
910 | { | |
911 | return Vloads_in_progress = old; | |
912 | } | |
913 | ||
164c8bfe RS |
914 | /* This handler function is used via internal_condition_case_1. */ |
915 | ||
916 | static Lisp_Object | |
917 | load_error_handler (data) | |
918 | Lisp_Object data; | |
919 | { | |
920 | return Qnil; | |
921 | } | |
7ee3bd7b | 922 | |
1d064697 SM |
923 | static Lisp_Object |
924 | load_warn_old_style_backquotes (file) | |
925 | Lisp_Object file; | |
926 | { | |
927 | if (!NILP (Vold_style_backquotes)) | |
928 | { | |
b636b4c1 | 929 | Lisp_Object args[2]; |
18a4a65e | 930 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
931 | args[1] = file; |
932 | Fmessage (2, args); | |
933 | } | |
934 | return Qnil; | |
935 | } | |
936 | ||
971a4293 LT |
937 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
938 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
939 | required. | |
940 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
941 | () | |
942 | { | |
943 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
944 | while (CONSP (suffixes)) | |
945 | { | |
946 | Lisp_Object exts = Vload_file_rep_suffixes; | |
947 | suffix = XCAR (suffixes); | |
948 | suffixes = XCDR (suffixes); | |
949 | while (CONSP (exts)) | |
950 | { | |
951 | ext = XCAR (exts); | |
952 | exts = XCDR (exts); | |
953 | lst = Fcons (concat2 (suffix, ext), lst); | |
954 | } | |
955 | } | |
956 | return Fnreverse (lst); | |
957 | } | |
958 | ||
f0a50954 | 959 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
960 | doc: /* Execute a file of Lisp code named FILE. |
961 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 962 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 963 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 964 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 965 | This function searches the directories in `load-path'. |
971a4293 | 966 | |
5de38842 | 967 | If optional second arg NOERROR is non-nil, |
971a4293 | 968 | report no error if FILE doesn't exist. |
5de38842 | 969 | Print messages at start and end of loading unless |
971a4293 | 970 | optional third arg NOMESSAGE is non-nil. |
5de38842 | 971 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 972 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 973 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
974 | the suffix `.elc' or `.el'; don't accept just FILE unless |
975 | it ends in one of those suffixes or includes a directory name. | |
976 | ||
977 | If this function fails to find a file, it may look for different | |
978 | representations of that file before trying another file. | |
979 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
980 | to the file name. Emacs uses this feature mainly to find compressed | |
981 | versions of files when Auto Compression mode is enabled. | |
982 | ||
983 | The exact suffixes that this function tries out, in the exact order, | |
984 | are given by the value of the variable `load-file-rep-suffixes' if | |
985 | NOSUFFIX is non-nil and by the return value of the function | |
986 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
987 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
988 | and then the former. | |
0fc213e9 RS |
989 | |
990 | Loading a file records its definitions, and its `provide' and | |
991 | `require' calls, in an element of `load-history' whose | |
992 | car is the file name loaded. See `load-history'. | |
993 | ||
971a4293 | 994 | Return t if the file exists and loads successfully. */) |
5de38842 | 995 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 996 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
997 | { |
998 | register FILE *stream; | |
999 | register int fd = -1; | |
aed13378 | 1000 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
1001 | struct gcpro gcpro1, gcpro2, gcpro3; |
1002 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
1003 | /* 1 means we printed the ".el is newer" message. */ |
1004 | int newer = 0; | |
1005 | /* 1 means we are loading a compiled file. */ | |
1006 | int compiled = 0; | |
c2225d00 | 1007 | Lisp_Object handler; |
456c67a4 | 1008 | int safe_p = 1; |
229ba775 | 1009 | char *fmode = "r"; |
6bb6da3e | 1010 | Lisp_Object tmp[2]; |
8792be66 KH |
1011 | int version; |
1012 | ||
317073d5 | 1013 | #ifdef DOS_NT |
229ba775 | 1014 | fmode = "rt"; |
317073d5 | 1015 | #endif /* DOS_NT */ |
078e7b4a | 1016 | |
b7826503 | 1017 | CHECK_STRING (file); |
078e7b4a | 1018 | |
c2225d00 | 1019 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1020 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1021 | handler = Ffind_file_name_handler (file, Qload); | |
1022 | if (!NILP (handler)) | |
1023 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1024 | |
07a0bda3 RS |
1025 | /* Do this after the handler to avoid |
1026 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1027 | (Below here, we care only whether they are nil or not.) |
1028 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1029 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1030 | everywhere, it accidentally stayed here. Since then, enough people |
1031 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1032 | that it seemed risky to remove. */ | |
164c8bfe RS |
1033 | if (! NILP (noerror)) |
1034 | { | |
1035 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1036 | Qt, load_error_handler); | |
1037 | if (NILP (file)) | |
1038 | return Qnil; | |
1039 | } | |
1040 | else | |
1041 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1042 | |
07a0bda3 | 1043 | |
078e7b4a JB |
1044 | /* Avoid weird lossage with null string as arg, |
1045 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 1046 | if (SCHARS (file) > 0) |
078e7b4a | 1047 | { |
d5db4077 | 1048 | int size = SBYTES (file); |
211f7dcd | 1049 | |
0fc213e9 RS |
1050 | found = Qnil; |
1051 | GCPRO2 (file, found); | |
211f7dcd RS |
1052 | |
1053 | if (! NILP (must_suffix)) | |
1054 | { | |
1055 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1056 | if (size > 3 | |
d5db4077 | 1057 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1058 | must_suffix = Qnil; |
1059 | else if (size > 4 | |
d5db4077 | 1060 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1061 | must_suffix = Qnil; |
1062 | /* Don't insist on adding a suffix | |
1063 | if the argument includes a directory name. */ | |
1064 | else if (! NILP (Ffile_name_directory (file))) | |
1065 | must_suffix = Qnil; | |
1066 | } | |
1067 | ||
f0a50954 | 1068 | fd = openp (Vload_path, file, |
e61b9b87 | 1069 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1070 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1071 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1072 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1073 | tmp))), |
86d00812 | 1074 | &found, Qnil); |
5a6e5452 | 1075 | UNGCPRO; |
078e7b4a JB |
1076 | } |
1077 | ||
96dc0f4e | 1078 | if (fd == -1) |
078e7b4a | 1079 | { |
265a9e55 | 1080 | if (NILP (noerror)) |
336d4a9c KS |
1081 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1082 | return Qnil; | |
078e7b4a JB |
1083 | } |
1084 | ||
ba0d1195 | 1085 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1086 | if (EQ (Qt, Vuser_init_file)) |
1087 | Vuser_init_file = found; | |
1088 | ||
96dc0f4e MB |
1089 | /* If FD is -2, that means openp found a magic file. */ |
1090 | if (fd == -2) | |
74549846 | 1091 | { |
5e24a1f7 KH |
1092 | if (NILP (Fequal (found, file))) |
1093 | /* If FOUND is a different file name from FILE, | |
1094 | find its handler even if we have already inhibited | |
1095 | the `load' operation on FILE. */ | |
1096 | handler = Ffind_file_name_handler (found, Qt); | |
1097 | else | |
1098 | handler = Ffind_file_name_handler (found, Qload); | |
1099 | if (! NILP (handler)) | |
1100 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1101 | } |
1102 | ||
550a625e GM |
1103 | /* Check if we're stuck in a recursive load cycle. |
1104 | ||
1105 | 2000-09-21: It's not possible to just check for the file loaded | |
1106 | being a member of Vloads_in_progress. This fails because of the | |
1107 | way the byte compiler currently works; `provide's are not | |
1108 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
1109 | leads to a certain amount of ``normal'' recursion. | |
1110 | ||
1111 | Also, just loading a file recursively is not always an error in | |
1112 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1113 | { |
1114 | int count = 0; | |
1115 | Lisp_Object tem; | |
1116 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
1117 | if (!NILP (Fequal (found, XCAR (tem)))) | |
1118 | count++; | |
1119 | if (count > 3) | |
3fdf12ca EZ |
1120 | { |
1121 | if (fd >= 0) | |
1122 | emacs_close (fd); | |
336d4a9c | 1123 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); |
3fdf12ca | 1124 | } |
3ba6fd9a RS |
1125 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1126 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1127 | } | |
7ee3bd7b | 1128 | |
6bb6da3e AM |
1129 | /* Get the name for load-history. */ |
1130 | hist_file_name = (! NILP (Vpurify_flag) | |
1131 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1132 | tmp[1] = Ffile_name_nondirectory (found), | |
1133 | tmp)) | |
1134 | : found) ; | |
1135 | ||
8792be66 | 1136 | version = -1; |
1bb9a689 | 1137 | |
88852d45 | 1138 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1139 | specbind (Qold_style_backquotes, Qnil); |
1140 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1141 | ||
a1c89c0a | 1142 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
8792be66 KH |
1143 | ".elc", 4) |
1144 | || (version = safe_to_load_p (fd)) > 0) | |
96dc0f4e MB |
1145 | /* Load .elc files directly, but not when they are |
1146 | remote and have no handler! */ | |
078e7b4a | 1147 | { |
96dc0f4e | 1148 | if (fd != -2) |
da84f340 | 1149 | { |
96dc0f4e MB |
1150 | struct stat s1, s2; |
1151 | int result; | |
da84f340 | 1152 | |
6bb6da3e | 1153 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1154 | |
8792be66 KH |
1155 | if (version < 0 |
1156 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1157 | { |
1158 | safe_p = 0; | |
1159 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1160 | { |
1161 | if (fd >= 0) | |
1162 | emacs_close (fd); | |
1163 | error ("File `%s' was not compiled in Emacs", | |
1164 | SDATA (found)); | |
1165 | } | |
96dc0f4e MB |
1166 | else if (!NILP (nomessage)) |
1167 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
1168 | } | |
04fc68e7 | 1169 | |
96dc0f4e MB |
1170 | compiled = 1; |
1171 | ||
eb191db2 EZ |
1172 | efound = ENCODE_FILE (found); |
1173 | ||
26fbf20b | 1174 | #ifdef DOS_NT |
96dc0f4e | 1175 | fmode = "rb"; |
26fbf20b | 1176 | #endif /* DOS_NT */ |
d5db4077 | 1177 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 1178 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 1179 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 1180 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1181 | |
96dc0f4e MB |
1182 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1183 | { | |
1184 | /* Make the progress messages mention that source is newer. */ | |
1185 | newer = 1; | |
04fc68e7 | 1186 | |
96dc0f4e | 1187 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
1188 | if (!NILP (nomessage)) |
1189 | { | |
0fc213e9 RS |
1190 | Lisp_Object msg_file; |
1191 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1192 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1193 | msg_file, 1); |
714d8c39 | 1194 | } |
96dc0f4e | 1195 | } |
0fc213e9 | 1196 | UNGCPRO; |
51ac6f83 | 1197 | } |
078e7b4a | 1198 | } |
fe0e03f3 KH |
1199 | else |
1200 | { | |
1201 | /* We are loading a source file (*.el). */ | |
1202 | if (!NILP (Vload_source_file_function)) | |
1203 | { | |
7ee3bd7b | 1204 | Lisp_Object val; |
96dc0f4e MB |
1205 | |
1206 | if (fd >= 0) | |
68c45bf0 | 1207 | emacs_close (fd); |
6bb6da3e | 1208 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b GM |
1209 | NILP (noerror) ? Qnil : Qt, |
1210 | NILP (nomessage) ? Qnil : Qt); | |
1211 | return unbind_to (count, val); | |
fe0e03f3 KH |
1212 | } |
1213 | } | |
078e7b4a | 1214 | |
6bb6da3e | 1215 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1216 | |
229ba775 | 1217 | #ifdef WINDOWSNT |
68c45bf0 | 1218 | emacs_close (fd); |
eb191db2 | 1219 | efound = ENCODE_FILE (found); |
d5db4077 | 1220 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
1221 | #else /* not WINDOWSNT */ |
1222 | stream = fdopen (fd, fmode); | |
1223 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1224 | if (stream == 0) |
1225 | { | |
68c45bf0 | 1226 | emacs_close (fd); |
d5db4077 | 1227 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1228 | } |
1229 | ||
4b104c41 RS |
1230 | if (! NILP (Vpurify_flag)) |
1231 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
1232 | ||
04fc68e7 RS |
1233 | if (NILP (nomessage)) |
1234 | { | |
da84f340 GM |
1235 | if (!safe_p) |
1236 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1237 | file, 1); | |
1238 | else if (!compiled) | |
e28552a4 | 1239 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1240 | else if (newer) |
e28552a4 RS |
1241 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1242 | file, 1); | |
db5cae4b | 1243 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1244 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1245 | } |
078e7b4a | 1246 | |
c04d9e70 | 1247 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1248 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1249 | specbind (Qload_file_name, found); |
74549846 | 1250 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1251 | load_descriptor_list |
1252 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 1253 | load_in_progress++; |
ab2a47e1 | 1254 | if (! version || version >= 22) |
b883cdb2 | 1255 | readevalloop (Qget_file_char, stream, hist_file_name, |
6a2bd1a5 | 1256 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1257 | else |
1258 | { | |
1259 | /* We can't handle a file which was compiled with | |
1260 | byte-compile-dynamic by older version of Emacs. */ | |
1261 | specbind (Qload_force_doc_strings, Qt); | |
b883cdb2 | 1262 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, Feval, |
768d4533 | 1263 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1264 | } |
078e7b4a JB |
1265 | unbind_to (count, Qnil); |
1266 | ||
6bb6da3e AM |
1267 | /* Run any eval-after-load forms for this file */ |
1268 | if (NILP (Vpurify_flag) | |
1269 | && (!NILP (Ffboundp (Qdo_after_load_evaluation)))) | |
1270 | call1 (Qdo_after_load_evaluation, hist_file_name) ; | |
1271 | ||
078e7b4a JB |
1272 | UNGCPRO; |
1273 | ||
b2a30870 RS |
1274 | if (saved_doc_string) |
1275 | free (saved_doc_string); | |
1276 | saved_doc_string = 0; | |
1277 | saved_doc_string_size = 0; | |
1278 | ||
c15cfd1f | 1279 | if (prev_saved_doc_string) |
3cb65b0e | 1280 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1281 | prev_saved_doc_string = 0; |
1282 | prev_saved_doc_string_size = 0; | |
1283 | ||
265a9e55 | 1284 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 1285 | { |
da84f340 GM |
1286 | if (!safe_p) |
1287 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1288 | file, 1); | |
1289 | else if (!compiled) | |
e28552a4 | 1290 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1291 | else if (newer) |
e28552a4 RS |
1292 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1293 | file, 1); | |
db5cae4b | 1294 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1295 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1296 | } |
7ee3bd7b | 1297 | |
11810d78 SM |
1298 | if (!NILP (Fequal (build_string ("obsolete"), |
1299 | Ffile_name_nondirectory | |
1300 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
1301 | message_with_string ("Package %s is obsolete", file, 1); | |
1302 | ||
078e7b4a JB |
1303 | return Qt; |
1304 | } | |
1305 | ||
1306 | static Lisp_Object | |
ebfe97a2 KS |
1307 | load_unwind (arg) /* used as unwind-protect function in load */ |
1308 | Lisp_Object arg; | |
078e7b4a | 1309 | { |
ebfe97a2 KS |
1310 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1311 | if (stream != NULL) | |
66cd0949 YM |
1312 | { |
1313 | BLOCK_INPUT; | |
1314 | fclose (stream); | |
1315 | UNBLOCK_INPUT; | |
1316 | } | |
078e7b4a JB |
1317 | if (--load_in_progress < 0) load_in_progress = 0; |
1318 | return Qnil; | |
1319 | } | |
1320 | ||
d2c6be7f RS |
1321 | static Lisp_Object |
1322 | load_descriptor_unwind (oldlist) | |
1323 | Lisp_Object oldlist; | |
1324 | { | |
1325 | load_descriptor_list = oldlist; | |
838abf56 | 1326 | return Qnil; |
d2c6be7f RS |
1327 | } |
1328 | ||
1329 | /* Close all descriptors in use for Floads. | |
1330 | This is used when starting a subprocess. */ | |
1331 | ||
1332 | void | |
1333 | close_load_descs () | |
1334 | { | |
f3849f25 | 1335 | #ifndef WINDOWSNT |
d2c6be7f | 1336 | Lisp_Object tail; |
9beb8baa | 1337 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1338 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1339 | #endif |
d2c6be7f | 1340 | } |
078e7b4a JB |
1341 | \f |
1342 | static int | |
1343 | complete_filename_p (pathname) | |
1344 | Lisp_Object pathname; | |
1345 | { | |
4b2dd274 | 1346 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1347 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1348 | || (SCHARS (pathname) > 2 |
317073d5 | 1349 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1350 | #ifdef VMS |
1351 | || index (s, ':') | |
1352 | #endif /* VMS */ | |
1353 | ); | |
1354 | } | |
1355 | ||
86d00812 SM |
1356 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1357 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1358 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1359 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1360 | file name when searching. | |
1361 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1362 | PREDICATE can also be an integer to pass to the access(2) function, | |
1363 | in which case file-name-handlers are ignored. */) | |
1364 | (filename, path, suffixes, predicate) | |
1365 | Lisp_Object filename, path, suffixes, predicate; | |
1366 | { | |
1367 | Lisp_Object file; | |
1368 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1369 | if (NILP (predicate) && fd > 0) | |
1370 | close (fd); | |
1371 | return file; | |
1372 | } | |
1373 | ||
1374 | ||
078e7b4a JB |
1375 | /* Search for a file whose name is STR, looking in directories |
1376 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1377 | On success, returns a file descriptor. On failure, returns -1. |
1378 | ||
e61b9b87 | 1379 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1380 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1381 | |
86d00812 SM |
1382 | PREDICATE non-nil means don't open the files, |
1383 | just look for one that satisfies the predicate. In this case, | |
1384 | returns 1 on success. The predicate can be a lisp function or | |
1385 | an integer to pass to `access' (in which case file-name-handlers | |
1386 | are ignored). | |
078e7b4a JB |
1387 | |
1388 | If STOREPTR is nonzero, it points to a slot where the name of | |
1389 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1390 | nil is stored there on failure. |
1391 | ||
96dc0f4e | 1392 | If the file we find is remote, return -2 |
86d00812 | 1393 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1394 | |
1395 | int | |
86d00812 | 1396 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1397 | Lisp_Object path, str; |
e61b9b87 | 1398 | Lisp_Object suffixes; |
078e7b4a | 1399 | Lisp_Object *storeptr; |
86d00812 | 1400 | Lisp_Object predicate; |
078e7b4a JB |
1401 | { |
1402 | register int fd; | |
1403 | int fn_size = 100; | |
1404 | char buf[100]; | |
1405 | register char *fn = buf; | |
1406 | int absolute = 0; | |
1407 | int want_size; | |
74549846 | 1408 | Lisp_Object filename; |
078e7b4a | 1409 | struct stat st; |
eb191db2 EZ |
1410 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1411 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1412 | int max_suffix_len = 0; |
1413 | ||
6f8eafd1 SM |
1414 | CHECK_STRING (str); |
1415 | ||
e61b9b87 SM |
1416 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1417 | { | |
f5df591a | 1418 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1419 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1420 | SBYTES (XCAR (tail))); |
e61b9b87 | 1421 | } |
078e7b4a | 1422 | |
8b9d426a | 1423 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1424 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1425 | ||
078e7b4a JB |
1426 | if (storeptr) |
1427 | *storeptr = Qnil; | |
1428 | ||
1429 | if (complete_filename_p (str)) | |
1430 | absolute = 1; | |
1431 | ||
e61b9b87 | 1432 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1433 | { |
e61b9b87 | 1434 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1435 | if (!complete_filename_p (filename)) |
1436 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1437 | /* Of course, this could conceivably lose if luser sets | |
1438 | default-directory to be something non-absolute... */ | |
1439 | { | |
1440 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1441 | if (!complete_filename_p (filename)) | |
1442 | /* Give up on this path element! */ | |
1443 | continue; | |
1444 | } | |
1445 | ||
1446 | /* Calculate maximum size of any filename made from | |
1447 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1448 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1449 | if (fn_size < want_size) |
1450 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1451 | ||
078e7b4a | 1452 | /* Loop over suffixes. */ |
a74d1c97 | 1453 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1454 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1455 | { |
d5db4077 | 1456 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1457 | Lisp_Object handler; |
eb191db2 | 1458 | int exists; |
078e7b4a | 1459 | |
c49afcd7 RS |
1460 | /* Concatenate path element/specified name with the suffix. |
1461 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1462 | if (SCHARS (filename) > 2 |
1463 | && SREF (filename, 0) == '/' | |
1464 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1465 | { |
d5db4077 KR |
1466 | strncpy (fn, SDATA (filename) + 2, |
1467 | SBYTES (filename) - 2); | |
1468 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1469 | } |
1470 | else | |
1471 | { | |
d5db4077 KR |
1472 | strncpy (fn, SDATA (filename), |
1473 | SBYTES (filename)); | |
1474 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1475 | } |
1476 | ||
078e7b4a | 1477 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1478 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1479 | |
74549846 | 1480 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1481 | /* We used to only check for handlers on non-absolute file names: |
1482 | if (absolute) | |
1483 | handler = Qnil; | |
1484 | else | |
1485 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1486 | It's not clear why that was the case and it breaks things like | |
1487 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1488 | string = build_string (fn); |
4773b8ca | 1489 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1490 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1491 | { | |
1492 | if (NILP (predicate)) | |
1493 | exists = !NILP (Ffile_readable_p (string)); | |
1494 | else | |
1495 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1496 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1497 | exists = 0; |
1498 | ||
1499 | if (exists) | |
078e7b4a JB |
1500 | { |
1501 | /* We succeeded; return this descriptor and filename. */ | |
1502 | if (storeptr) | |
eb191db2 | 1503 | *storeptr = string; |
5ef2a3c0 | 1504 | UNGCPRO; |
96dc0f4e | 1505 | return -2; |
74549846 RS |
1506 | } |
1507 | } | |
1508 | else | |
1509 | { | |
4b2dd274 | 1510 | const char *pfn; |
eb191db2 EZ |
1511 | |
1512 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1513 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1514 | exists = (stat (pfn, &st) >= 0 |
1515 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1516 | if (exists) |
1517 | { | |
1518 | /* Check that we can access or open it. */ | |
86d00812 SM |
1519 | if (NATNUMP (predicate)) |
1520 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1521 | else |
eb191db2 | 1522 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1523 | |
1524 | if (fd >= 0) | |
1525 | { | |
1526 | /* We succeeded; return this descriptor and filename. */ | |
1527 | if (storeptr) | |
eb191db2 | 1528 | *storeptr = string; |
74549846 RS |
1529 | UNGCPRO; |
1530 | return fd; | |
1531 | } | |
078e7b4a JB |
1532 | } |
1533 | } | |
078e7b4a | 1534 | } |
5a6e5452 | 1535 | if (absolute) |
5ef2a3c0 | 1536 | break; |
078e7b4a JB |
1537 | } |
1538 | ||
5ef2a3c0 KH |
1539 | UNGCPRO; |
1540 | return -1; | |
078e7b4a JB |
1541 | } |
1542 | ||
1543 | \f | |
ae321d28 RS |
1544 | /* Merge the list we've accumulated of globals from the current input source |
1545 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1546 | the source has an associated file name or not. |
1547 | ||
1548 | FILENAME is the file name that we are loading from. | |
1549 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1550 | |
1551 | static void | |
b502a9a1 RS |
1552 | build_load_history (filename, entire) |
1553 | Lisp_Object filename; | |
1554 | int entire; | |
ae321d28 RS |
1555 | { |
1556 | register Lisp_Object tail, prev, newelt; | |
1557 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1558 | register int foundit = 0; |
ae321d28 RS |
1559 | |
1560 | tail = Vload_history; | |
1561 | prev = Qnil; | |
b502a9a1 | 1562 | |
86d00812 | 1563 | while (CONSP (tail)) |
ae321d28 | 1564 | { |
86d00812 | 1565 | tem = XCAR (tail); |
ae321d28 RS |
1566 | |
1567 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1568 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1569 | { |
1570 | foundit = 1; | |
1571 | ||
b502a9a1 RS |
1572 | /* If we're loading the entire file, remove old data. */ |
1573 | if (entire) | |
86d00812 | 1574 | { |
ae321d28 | 1575 | if (NILP (prev)) |
86d00812 | 1576 | Vload_history = XCDR (tail); |
ae321d28 | 1577 | else |
86d00812 | 1578 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1579 | } |
1580 | ||
1581 | /* Otherwise, cons on new symbols that are not already members. */ | |
1582 | else | |
1583 | { | |
1584 | tem2 = Vcurrent_load_list; | |
1585 | ||
1586 | while (CONSP (tem2)) | |
1587 | { | |
86d00812 | 1588 | newelt = XCAR (tem2); |
ae321d28 | 1589 | |
d642e4f9 | 1590 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1591 | Fsetcar (tail, Fcons (XCAR (tem), |
1592 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1593 | |
86d00812 | 1594 | tem2 = XCDR (tem2); |
ae321d28 RS |
1595 | QUIT; |
1596 | } | |
1597 | } | |
1598 | } | |
1599 | else | |
1600 | prev = tail; | |
86d00812 | 1601 | tail = XCDR (tail); |
ae321d28 RS |
1602 | QUIT; |
1603 | } | |
1604 | ||
b502a9a1 RS |
1605 | /* If we're loading an entire file, cons the new assoc onto the |
1606 | front of load-history, the most-recently-loaded position. Also | |
1607 | do this if we didn't find an existing member for the file. */ | |
1608 | if (entire || !foundit) | |
8a1f1537 RS |
1609 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1610 | Vload_history); | |
ae321d28 RS |
1611 | } |
1612 | ||
078e7b4a | 1613 | Lisp_Object |
232ccf27 DL |
1614 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1615 | Lisp_Object junk; | |
078e7b4a JB |
1616 | { |
1617 | read_pure = 0; | |
1618 | return Qnil; | |
1619 | } | |
1620 | ||
94e554db RS |
1621 | static Lisp_Object |
1622 | readevalloop_1 (old) | |
1623 | Lisp_Object old; | |
1624 | { | |
1625 | load_convert_to_unibyte = ! NILP (old); | |
1626 | return Qnil; | |
1627 | } | |
1628 | ||
9c97398c GM |
1629 | /* Signal an `end-of-file' error, if possible with file name |
1630 | information. */ | |
1631 | ||
1632 | static void | |
1633 | end_of_file_error () | |
1634 | { | |
9c97398c | 1635 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1636 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1637 | |
336d4a9c | 1638 | xsignal0 (Qend_of_file); |
9c97398c GM |
1639 | } |
1640 | ||
94e554db | 1641 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1642 | for this invocation. |
4c03c46d | 1643 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1644 | |
1645 | START, END specify region to read in current buffer (from eval-region). | |
1646 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1647 | |
078e7b4a | 1648 | static void |
4c03c46d KS |
1649 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1650 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1651 | Lisp_Object readcharfun; |
ae321d28 RS |
1652 | FILE *stream; |
1653 | Lisp_Object sourcename; | |
078e7b4a JB |
1654 | Lisp_Object (*evalfun) (); |
1655 | int printflag; | |
976350af | 1656 | Lisp_Object unibyte, readfun; |
4c03c46d | 1657 | Lisp_Object start, end; |
078e7b4a JB |
1658 | { |
1659 | register int c; | |
1660 | register Lisp_Object val; | |
aed13378 | 1661 | int count = SPECPDL_INDEX (); |
0a37f512 | 1662 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1663 | struct buffer *b = 0; |
f38952fe | 1664 | int continue_reading_p; |
d11db2c8 RS |
1665 | /* Nonzero if reading an entire buffer. */ |
1666 | int whole_buffer = 0; | |
1667 | /* 1 on the first time around. */ | |
1668 | int first_sexp = 1; | |
1669 | ||
1670 | if (MARKERP (readcharfun)) | |
1671 | { | |
1672 | if (NILP (start)) | |
8878319c | 1673 | start = readcharfun; |
d11db2c8 | 1674 | } |
49cf7ff4 RS |
1675 | |
1676 | if (BUFFERP (readcharfun)) | |
1677 | b = XBUFFER (readcharfun); | |
1678 | else if (MARKERP (readcharfun)) | |
1679 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1680 | |
1ed7b9ae RS |
1681 | /* We assume START is nil when input is not from a buffer. */ |
1682 | if (! NILP (start) && !b) | |
1683 | abort (); | |
1684 | ||
0a37f512 | 1685 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1686 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1687 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1688 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1689 | |
0a37f512 | 1690 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1691 | |
6bb6da3e AM |
1692 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1693 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1694 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1695 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1696 | sourcename = call1 (Qfile_truename, sourcename) ; |
1697 | ||
ae321d28 RS |
1698 | LOADHIST_ATTACH (sourcename); |
1699 | ||
f38952fe GM |
1700 | continue_reading_p = 1; |
1701 | while (continue_reading_p) | |
078e7b4a | 1702 | { |
4c03c46d KS |
1703 | int count1 = SPECPDL_INDEX (); |
1704 | ||
49cf7ff4 RS |
1705 | if (b != 0 && NILP (b->name)) |
1706 | error ("Reading from killed buffer"); | |
1707 | ||
4c03c46d KS |
1708 | if (!NILP (start)) |
1709 | { | |
721b7d9e | 1710 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1711 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1712 | set_buffer_internal (b); |
1713 | ||
1714 | /* Save point in it. */ | |
4c03c46d | 1715 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1716 | /* Save ZV in it. */ |
4c03c46d | 1717 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1718 | /* Those get unbound after we read one expression. */ |
1719 | ||
1720 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1721 | Fgoto_char (start); |
d11db2c8 RS |
1722 | if (!NILP (end)) |
1723 | Fnarrow_to_region (make_number (BEGV), end); | |
1724 | ||
1725 | /* Just for cleanliness, convert END to a marker | |
1726 | if it is an integer. */ | |
1727 | if (INTEGERP (end)) | |
1728 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1729 | } |
1730 | ||
d11db2c8 RS |
1731 | /* On the first cycle, we can easily test here |
1732 | whether we are reading the whole buffer. */ | |
1733 | if (b && first_sexp) | |
1734 | whole_buffer = (PT == BEG && ZV == Z); | |
1735 | ||
078e7b4a | 1736 | instream = stream; |
4c03c46d | 1737 | read_next: |
078e7b4a JB |
1738 | c = READCHAR; |
1739 | if (c == ';') | |
1740 | { | |
1741 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1742 | goto read_next; |
1743 | } | |
1744 | if (c < 0) | |
1745 | { | |
1746 | unbind_to (count1, Qnil); | |
1747 | break; | |
078e7b4a | 1748 | } |
6069d957 RS |
1749 | |
1750 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1751 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1752 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1753 | goto read_next; |
078e7b4a | 1754 | |
265a9e55 | 1755 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1756 | { |
1757 | record_unwind_protect (unreadpure, Qnil); | |
1758 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1759 | } |
1760 | else | |
1761 | { | |
1762 | UNREAD (c); | |
4ad679f9 | 1763 | read_objects = Qnil; |
f38952fe GM |
1764 | if (!NILP (readfun)) |
1765 | { | |
1766 | val = call1 (readfun, readcharfun); | |
1767 | ||
1768 | /* If READCHARFUN has set point to ZV, we should | |
1769 | stop reading, even if the form read sets point | |
1770 | to a different value when evaluated. */ | |
1771 | if (BUFFERP (readcharfun)) | |
1772 | { | |
1773 | struct buffer *b = XBUFFER (readcharfun); | |
1774 | if (BUF_PT (b) == BUF_ZV (b)) | |
1775 | continue_reading_p = 0; | |
1776 | } | |
1777 | } | |
976350af | 1778 | else if (! NILP (Vload_read_function)) |
84a15045 | 1779 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1780 | else |
abb13b09 | 1781 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1782 | } |
1783 | ||
4c03c46d KS |
1784 | if (!NILP (start) && continue_reading_p) |
1785 | start = Fpoint_marker (); | |
d11db2c8 RS |
1786 | |
1787 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1788 | unbind_to (count1, Qnil); |
1789 | ||
d11db2c8 | 1790 | /* Now eval what we just read. */ |
078e7b4a | 1791 | val = (*evalfun) (val); |
f38952fe | 1792 | |
078e7b4a JB |
1793 | if (printflag) |
1794 | { | |
1795 | Vvalues = Fcons (val, Vvalues); | |
1796 | if (EQ (Vstandard_output, Qt)) | |
1797 | Fprin1 (val, Qnil); | |
1798 | else | |
1799 | Fprint (val, Qnil); | |
1800 | } | |
d11db2c8 RS |
1801 | |
1802 | first_sexp = 0; | |
078e7b4a JB |
1803 | } |
1804 | ||
8878319c | 1805 | build_load_history (sourcename, |
d11db2c8 | 1806 | stream || whole_buffer); |
b502a9a1 | 1807 | |
ae321d28 RS |
1808 | UNGCPRO; |
1809 | ||
078e7b4a JB |
1810 | unbind_to (count, Qnil); |
1811 | } | |
1812 | ||
1076254d | 1813 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1814 | doc: /* Execute the current buffer as Lisp code. |
1815 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1816 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1817 | PRINTFLAG controls printing of output: | |
51d8b30e | 1818 | A value of nil means discard it; anything else is stream for print. |
5de38842 PJ |
1819 | |
1820 | If the optional third argument FILENAME is non-nil, | |
1821 | it specifies the file name to use for `load-history'. | |
1822 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1823 | for this invocation. | |
1824 | ||
3f9ab804 | 1825 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1826 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1827 | ||
1828 | This function preserves the position of point. */) | |
1829 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1830 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1831 | { |
aed13378 | 1832 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1833 | Lisp_Object tem, buf; |
1834 | ||
9391b698 | 1835 | if (NILP (buffer)) |
228d4b1c JA |
1836 | buf = Fcurrent_buffer (); |
1837 | else | |
9391b698 | 1838 | buf = Fget_buffer (buffer); |
dfdb645c | 1839 | if (NILP (buf)) |
13febd85 | 1840 | error ("No such buffer"); |
228d4b1c | 1841 | |
1076254d | 1842 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1843 | tem = Qsymbolp; |
1844 | else | |
1845 | tem = printflag; | |
13febd85 RS |
1846 | |
1847 | if (NILP (filename)) | |
1848 | filename = XBUFFER (buf)->filename; | |
1849 | ||
3f39f996 | 1850 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1851 | specbind (Qstandard_output, tem); |
1852 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1853 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
4c03c46d KS |
1854 | readevalloop (buf, 0, filename, Feval, |
1855 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1856 | unbind_to (count, Qnil); |
228d4b1c JA |
1857 | |
1858 | return Qnil; | |
1859 | } | |
1860 | ||
976350af | 1861 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1862 | doc: /* Execute the region as Lisp code. |
1863 | When called from programs, expects two arguments, | |
1864 | giving starting and ending indices in the current buffer | |
1865 | of the text to be executed. | |
1866 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1867 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1868 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1869 | instead of `read' to read each expression. It gets one argument | |
1870 | which is the input stream for reading characters. | |
1871 | ||
1872 | This function does not move point. */) | |
1873 | (start, end, printflag, read_function) | |
976350af | 1874 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1875 | { |
aed13378 | 1876 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1877 | Lisp_Object tem, cbuf; |
1878 | ||
1879 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1880 | |
265a9e55 | 1881 | if (NILP (printflag)) |
078e7b4a JB |
1882 | tem = Qsymbolp; |
1883 | else | |
1884 | tem = printflag; | |
1885 | specbind (Qstandard_output, tem); | |
3f39f996 | 1886 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1887 | |
4c03c46d | 1888 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1889 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1890 | !NILP (printflag), Qnil, read_function, |
1891 | start, end); | |
078e7b4a JB |
1892 | |
1893 | return unbind_to (count, Qnil); | |
1894 | } | |
1895 | ||
078e7b4a JB |
1896 | \f |
1897 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1898 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1899 | If STREAM is nil, use the value of `standard-input' (which see). | |
1900 | STREAM or the value of `standard-input' may be: | |
1901 | a buffer (read from point and advance it) | |
1902 | a marker (read from where it points and advance it) | |
1903 | a function (call it with no arguments for each character, | |
1904 | call it with a char as argument to push a char back) | |
1905 | a string (takes text from string, starting at the beginning) | |
1906 | t (read text line using minibuffer and use it, or read from | |
1907 | standard input in batch mode). */) | |
1908 | (stream) | |
5be02dff | 1909 | Lisp_Object stream; |
078e7b4a | 1910 | { |
5be02dff KH |
1911 | if (NILP (stream)) |
1912 | stream = Vstandard_input; | |
1913 | if (EQ (stream, Qt)) | |
1914 | stream = Qread_char; | |
5be02dff | 1915 | if (EQ (stream, Qread_char)) |
078e7b4a | 1916 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1917 | |
abb13b09 | 1918 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1919 | } |
1920 | ||
1921 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1922 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1923 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1924 | START and END optionally delimit a substring of STRING from which to read; | |
1925 | they default to 0 and (length STRING) respectively. */) | |
1926 | (string, start, end) | |
078e7b4a JB |
1927 | Lisp_Object string, start, end; |
1928 | { | |
2530ceaf | 1929 | Lisp_Object ret; |
b7826503 | 1930 | CHECK_STRING (string); |
2530ceaf CW |
1931 | /* read_internal_start sets read_from_string_index. */ |
1932 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1933 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1934 | } |
078e7b4a | 1935 | |
abb13b09 CW |
1936 | /* Function to set up the global context we need in toplevel read |
1937 | calls. */ | |
1938 | static Lisp_Object | |
1939 | read_internal_start (stream, start, end) | |
1940 | Lisp_Object stream; | |
1941 | Lisp_Object start; /* Only used when stream is a string. */ | |
1942 | Lisp_Object end; /* Only used when stream is a string. */ | |
1943 | { | |
1944 | Lisp_Object retval; | |
078e7b4a | 1945 | |
abb13b09 | 1946 | readchar_count = 0; |
17634846 | 1947 | new_backquote_flag = 0; |
4ad679f9 | 1948 | read_objects = Qnil; |
abb13b09 CW |
1949 | if (EQ (Vread_with_symbol_positions, Qt) |
1950 | || EQ (Vread_with_symbol_positions, stream)) | |
1951 | Vread_symbol_positions_list = Qnil; | |
1952 | ||
8f924df7 KH |
1953 | if (STRINGP (stream) |
1954 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 CW |
1955 | { |
1956 | int startval, endval; | |
8f924df7 | 1957 | Lisp_Object string; |
078e7b4a | 1958 | |
8f924df7 KH |
1959 | if (STRINGP (stream)) |
1960 | string = stream; | |
1961 | else | |
1962 | string = XCAR (stream); | |
078e7b4a | 1963 | |
abb13b09 | 1964 | if (NILP (end)) |
8f924df7 | 1965 | endval = SCHARS (string); |
abb13b09 CW |
1966 | else |
1967 | { | |
1968 | CHECK_NUMBER (end); | |
1969 | endval = XINT (end); | |
8f924df7 KH |
1970 | if (endval < 0 || endval > SCHARS (string)) |
1971 | args_out_of_range (string, end); | |
abb13b09 | 1972 | } |
17634846 | 1973 | |
abb13b09 CW |
1974 | if (NILP (start)) |
1975 | startval = 0; | |
1976 | else | |
1977 | { | |
1978 | CHECK_NUMBER (start); | |
1979 | startval = XINT (start); | |
1980 | if (startval < 0 || startval > endval) | |
8f924df7 | 1981 | args_out_of_range (string, start); |
abb13b09 CW |
1982 | } |
1983 | read_from_string_index = startval; | |
8f924df7 | 1984 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
1985 | read_from_string_limit = endval; |
1986 | } | |
177c0ea7 | 1987 | |
abb13b09 CW |
1988 | retval = read0 (stream); |
1989 | if (EQ (Vread_with_symbol_positions, Qt) | |
1990 | || EQ (Vread_with_symbol_positions, stream)) | |
1991 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1992 | return retval; | |
078e7b4a JB |
1993 | } |
1994 | \f | |
336d4a9c KS |
1995 | |
1996 | /* Signal Qinvalid_read_syntax error. | |
1997 | S is error string of length N (if > 0) */ | |
1998 | ||
1999 | static void | |
2000 | invalid_syntax (s, n) | |
2001 | const char *s; | |
2002 | int n; | |
2003 | { | |
2004 | if (!n) | |
2005 | n = strlen (s); | |
2006 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
2007 | } | |
2008 | ||
2009 | ||
6428369f KH |
2010 | /* Use this for recursive reads, in contexts where internal tokens |
2011 | are not allowed. */ | |
e28552a4 | 2012 | |
078e7b4a JB |
2013 | static Lisp_Object |
2014 | read0 (readcharfun) | |
2015 | Lisp_Object readcharfun; | |
2016 | { | |
2017 | register Lisp_Object val; | |
e28552a4 | 2018 | int c; |
078e7b4a | 2019 | |
17634846 | 2020 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2021 | if (!c) |
2022 | return val; | |
078e7b4a | 2023 | |
336d4a9c KS |
2024 | xsignal1 (Qinvalid_read_syntax, |
2025 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2026 | } |
2027 | \f | |
2028 | static int read_buffer_size; | |
2029 | static char *read_buffer; | |
2030 | ||
f6f79b37 | 2031 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2032 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2033 | |
078e7b4a | 2034 | static int |
8792be66 | 2035 | read_escape (readcharfun, stringp) |
078e7b4a | 2036 | Lisp_Object readcharfun; |
e7fc914b | 2037 | int stringp; |
078e7b4a JB |
2038 | { |
2039 | register int c = READCHAR; | |
71b169b8 EZ |
2040 | /* \u allows up to four hex digits, \U up to eight. Default to the |
2041 | behaviour for \u, and change this value in the case that \U is seen. */ | |
2042 | int unicode_hex_count = 4; | |
f6f79b37 | 2043 | |
078e7b4a JB |
2044 | switch (c) |
2045 | { | |
f3849f25 | 2046 | case -1: |
da3b886d | 2047 | end_of_file_error (); |
f3849f25 | 2048 | |
078e7b4a | 2049 | case 'a': |
265a9e55 | 2050 | return '\007'; |
078e7b4a JB |
2051 | case 'b': |
2052 | return '\b'; | |
f405a585 RS |
2053 | case 'd': |
2054 | return 0177; | |
078e7b4a JB |
2055 | case 'e': |
2056 | return 033; | |
2057 | case 'f': | |
2058 | return '\f'; | |
2059 | case 'n': | |
2060 | return '\n'; | |
2061 | case 'r': | |
2062 | return '\r'; | |
2063 | case 't': | |
2064 | return '\t'; | |
2065 | case 'v': | |
2066 | return '\v'; | |
2067 | case '\n': | |
2068 | return -1; | |
e28552a4 | 2069 | case ' ': |
e7fc914b KH |
2070 | if (stringp) |
2071 | return -1; | |
2072 | return ' '; | |
078e7b4a JB |
2073 | |
2074 | case 'M': | |
2075 | c = READCHAR; | |
2076 | if (c != '-') | |
2077 | error ("Invalid escape character syntax"); | |
2078 | c = READCHAR; | |
2079 | if (c == '\\') | |
8792be66 | 2080 | c = read_escape (readcharfun, 0); |
7bd279cd | 2081 | return c | meta_modifier; |
f405a585 RS |
2082 | |
2083 | case 'S': | |
2084 | c = READCHAR; | |
2085 | if (c != '-') | |
2086 | error ("Invalid escape character syntax"); | |
2087 | c = READCHAR; | |
2088 | if (c == '\\') | |
8792be66 | 2089 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2090 | return c | shift_modifier; |
2091 | ||
2092 | case 'H': | |
2093 | c = READCHAR; | |
2094 | if (c != '-') | |
2095 | error ("Invalid escape character syntax"); | |
2096 | c = READCHAR; | |
2097 | if (c == '\\') | |
8792be66 | 2098 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2099 | return c | hyper_modifier; |
2100 | ||
2101 | case 'A': | |
2102 | c = READCHAR; | |
2103 | if (c != '-') | |
2104 | error ("Invalid escape character syntax"); | |
2105 | c = READCHAR; | |
2106 | if (c == '\\') | |
8792be66 | 2107 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2108 | return c | alt_modifier; |
2109 | ||
2110 | case 's': | |
2111 | c = READCHAR; | |
4d7528d0 | 2112 | if (stringp || c != '-') |
010b7eac RS |
2113 | { |
2114 | UNREAD (c); | |
2115 | return ' '; | |
2116 | } | |
7bd279cd RS |
2117 | c = READCHAR; |
2118 | if (c == '\\') | |
8792be66 | 2119 | c = read_escape (readcharfun, 0); |
7bd279cd | 2120 | return c | super_modifier; |
078e7b4a JB |
2121 | |
2122 | case 'C': | |
2123 | c = READCHAR; | |
2124 | if (c != '-') | |
2125 | error ("Invalid escape character syntax"); | |
2126 | case '^': | |
2127 | c = READCHAR; | |
2128 | if (c == '\\') | |
8792be66 | 2129 | c = read_escape (readcharfun, 0); |
164d590d KH |
2130 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2131 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2132 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2133 | return c | ctrl_modifier; | |
f405a585 RS |
2134 | /* ASCII control chars are made from letters (both cases), |
2135 | as well as the non-letters within 0100...0137. */ | |
2136 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2137 | return (c & (037 | ~0177)); | |
2138 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2139 | return (c & (037 | ~0177)); | |
078e7b4a | 2140 | else |
7bd279cd | 2141 | return c | ctrl_modifier; |
078e7b4a JB |
2142 | |
2143 | case '0': | |
2144 | case '1': | |
2145 | case '2': | |
2146 | case '3': | |
2147 | case '4': | |
2148 | case '5': | |
2149 | case '6': | |
2150 | case '7': | |
2151 | /* An octal escape, as in ANSI C. */ | |
2152 | { | |
2153 | register int i = c - '0'; | |
2154 | register int count = 0; | |
2155 | while (++count < 3) | |
2156 | { | |
2157 | if ((c = READCHAR) >= '0' && c <= '7') | |
2158 | { | |
2159 | i *= 8; | |
2160 | i += c - '0'; | |
2161 | } | |
2162 | else | |
2163 | { | |
2164 | UNREAD (c); | |
2165 | break; | |
2166 | } | |
2167 | } | |
177c0ea7 | 2168 | |
8f924df7 | 2169 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2170 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2171 | return i; |
2172 | } | |
2173 | ||
2174 | case 'x': | |
2175 | /* A hex escape, as in ANSI C. */ | |
2176 | { | |
2177 | int i = 0; | |
1571601b | 2178 | int count = 0; |
078e7b4a JB |
2179 | while (1) |
2180 | { | |
2181 | c = READCHAR; | |
2182 | if (c >= '0' && c <= '9') | |
2183 | { | |
2184 | i *= 16; | |
2185 | i += c - '0'; | |
2186 | } | |
2187 | else if ((c >= 'a' && c <= 'f') | |
2188 | || (c >= 'A' && c <= 'F')) | |
2189 | { | |
2190 | i *= 16; | |
2191 | if (c >= 'a' && c <= 'f') | |
2192 | i += c - 'a' + 10; | |
2193 | else | |
2194 | i += c - 'A' + 10; | |
2195 | } | |
2196 | else | |
2197 | { | |
2198 | UNREAD (c); | |
2199 | break; | |
2200 | } | |
1571601b | 2201 | count++; |
078e7b4a | 2202 | } |
f6f79b37 | 2203 | |
1571601b | 2204 | if (count < 3 && i >= 0x80) |
8792be66 | 2205 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2206 | return i; |
2207 | } | |
2208 | ||
71b169b8 EZ |
2209 | case 'U': |
2210 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2211 | unicode_hex_count = 8; | |
2212 | case 'u': | |
2213 | ||
2214 | /* A Unicode escape. We only permit them in strings and characters, | |
2215 | not arbitrarily in the source code, as in some other languages. */ | |
2216 | { | |
2217 | int i = 0; | |
2218 | int count = 0; | |
71b169b8 EZ |
2219 | |
2220 | while (++count <= unicode_hex_count) | |
2221 | { | |
2222 | c = READCHAR; | |
a3ac22e4 | 2223 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2224 | want. */ |
2225 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2226 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2227 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2228 | else | |
2229 | { | |
2230 | error ("Non-hex digit used for Unicode escape"); | |
2231 | break; | |
2232 | } | |
2233 | } | |
2234 | ||
7ea7f636 | 2235 | return i; |
71b169b8 EZ |
2236 | } |
2237 | ||
078e7b4a JB |
2238 | default: |
2239 | return c; | |
2240 | } | |
2241 | } | |
2242 | ||
bf5d1a17 GM |
2243 | /* Read an integer in radix RADIX using READCHARFUN to read |
2244 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2245 | read error is signaled . Value is the integer read. Signals an | |
2246 | error if encountering invalid read syntax or if RADIX is out of | |
2247 | range. */ | |
2248 | ||
2249 | static Lisp_Object | |
2250 | read_integer (readcharfun, radix) | |
2251 | Lisp_Object readcharfun; | |
2252 | int radix; | |
2253 | { | |
5e37dc22 GM |
2254 | int ndigits = 0, invalid_p, c, sign = 0; |
2255 | EMACS_INT number = 0; | |
bf5d1a17 GM |
2256 | |
2257 | if (radix < 2 || radix > 36) | |
2258 | invalid_p = 1; | |
2259 | else | |
2260 | { | |
2261 | number = ndigits = invalid_p = 0; | |
2262 | sign = 1; | |
2263 | ||
2264 | c = READCHAR; | |
2265 | if (c == '-') | |
2266 | { | |
2267 | c = READCHAR; | |
2268 | sign = -1; | |
2269 | } | |
2270 | else if (c == '+') | |
2271 | c = READCHAR; | |
177c0ea7 | 2272 | |
bf5d1a17 GM |
2273 | while (c >= 0) |
2274 | { | |
2275 | int digit; | |
177c0ea7 | 2276 | |
bf5d1a17 GM |
2277 | if (c >= '0' && c <= '9') |
2278 | digit = c - '0'; | |
2279 | else if (c >= 'a' && c <= 'z') | |
2280 | digit = c - 'a' + 10; | |
2281 | else if (c >= 'A' && c <= 'Z') | |
2282 | digit = c - 'A' + 10; | |
2283 | else | |
b632fa48 GM |
2284 | { |
2285 | UNREAD (c); | |
2286 | break; | |
2287 | } | |
bf5d1a17 GM |
2288 | |
2289 | if (digit < 0 || digit >= radix) | |
2290 | invalid_p = 1; | |
2291 | ||
2292 | number = radix * number + digit; | |
2293 | ++ndigits; | |
2294 | c = READCHAR; | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | if (ndigits == 0 || invalid_p) | |
2299 | { | |
2300 | char buf[50]; | |
2301 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2302 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2303 | } |
2304 | ||
2305 | return make_number (sign * number); | |
2306 | } | |
2307 | ||
2308 | ||
6428369f KH |
2309 | /* If the next token is ')' or ']' or '.', we store that character |
2310 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2311 | zero in *PCH and we read and return one lisp object. |
2312 | ||
2313 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2314 | ||
078e7b4a | 2315 | static Lisp_Object |
17634846 | 2316 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 2317 | register Lisp_Object readcharfun; |
e28552a4 | 2318 | int *pch; |
17634846 | 2319 | int first_in_list; |
078e7b4a JB |
2320 | { |
2321 | register int c; | |
4ad679f9 | 2322 | int uninterned_symbol = 0; |
1202434b | 2323 | int multibyte; |
4ad679f9 | 2324 | |
6428369f | 2325 | *pch = 0; |
8792be66 | 2326 | load_each_byte = 0; |
078e7b4a JB |
2327 | |
2328 | retry: | |
2329 | ||
1202434b | 2330 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2331 | if (c < 0) |
2332 | end_of_file_error (); | |
078e7b4a JB |
2333 | |
2334 | switch (c) | |
2335 | { | |
2336 | case '(': | |
2337 | return read_list (0, readcharfun); | |
2338 | ||
2339 | case '[': | |
c15cfd1f | 2340 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2341 | |
2342 | case ')': | |
2343 | case ']': | |
078e7b4a | 2344 | { |
6428369f KH |
2345 | *pch = c; |
2346 | return Qnil; | |
078e7b4a JB |
2347 | } |
2348 | ||
2349 | case '#': | |
200f684e | 2350 | c = READCHAR; |
c2390933 RS |
2351 | if (c == '^') |
2352 | { | |
2353 | c = READCHAR; | |
2354 | if (c == '[') | |
2355 | { | |
2356 | Lisp_Object tmp; | |
c15cfd1f | 2357 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2358 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2359 | error ("Invalid size char-table"); |
985773c9 | 2360 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2361 | return tmp; |
2362 | } | |
3701b5de KH |
2363 | else if (c == '^') |
2364 | { | |
2365 | c = READCHAR; | |
2366 | if (c == '[') | |
2367 | { | |
2368 | Lisp_Object tmp; | |
1571601b | 2369 | int depth, size; |
8f924df7 | 2370 | |
c15cfd1f | 2371 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2372 | if (!INTEGERP (AREF (tmp, 0))) |
2373 | error ("Invalid depth in char-table"); | |
2374 | depth = XINT (AREF (tmp, 0)); | |
2375 | if (depth < 1 || depth > 3) | |
2376 | error ("Invalid depth in char-table"); | |
41482d36 | 2377 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2378 | if (chartab_size [depth] != size) |
3701b5de | 2379 | error ("Invalid size char-table"); |
985773c9 | 2380 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2381 | return tmp; |
2382 | } | |
336d4a9c | 2383 | invalid_syntax ("#^^", 3); |
3701b5de | 2384 | } |
336d4a9c | 2385 | invalid_syntax ("#^", 2); |
c2390933 RS |
2386 | } |
2387 | if (c == '&') | |
2388 | { | |
2389 | Lisp_Object length; | |
2390 | length = read1 (readcharfun, pch, first_in_list); | |
2391 | c = READCHAR; | |
2392 | if (c == '"') | |
2393 | { | |
2394 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2395 | int size_in_chars |
2396 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2397 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2398 | |
2399 | UNREAD (c); | |
2400 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2401 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2402 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2403 | /* We used to print 1 char too many |
2404 | when the number of bits was a multiple of 8. | |
2405 | Accept such input in case it came from an old | |
2406 | version. */ | |
2407 | && ! (XFASTINT (length) | |
327719ee | 2408 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2409 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2410 | |
c2390933 | 2411 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2412 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2413 | size_in_chars); |
67d3b149 | 2414 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2415 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2416 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2417 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2418 | return val; |
2419 | } | |
336d4a9c | 2420 | invalid_syntax ("#&...", 5); |
c2390933 | 2421 | } |
200f684e RS |
2422 | if (c == '[') |
2423 | { | |
2424 | /* Accept compiled functions at read-time so that we don't have to | |
2425 | build them using function calls. */ | |
748ef62f | 2426 | Lisp_Object tmp; |
c15cfd1f | 2427 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2428 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2429 | XVECTOR (tmp)->contents); | |
200f684e | 2430 | } |
748ef62f RS |
2431 | if (c == '(') |
2432 | { | |
2433 | Lisp_Object tmp; | |
2434 | struct gcpro gcpro1; | |
e28552a4 | 2435 | int ch; |
748ef62f RS |
2436 | |
2437 | /* Read the string itself. */ | |
17634846 | 2438 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2439 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2440 | invalid_syntax ("#", 1); |
748ef62f RS |
2441 | GCPRO1 (tmp); |
2442 | /* Read the intervals and their properties. */ | |
2443 | while (1) | |
2444 | { | |
2445 | Lisp_Object beg, end, plist; | |
2446 | ||
17634846 | 2447 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2448 | end = plist = Qnil; |
6428369f KH |
2449 | if (ch == ')') |
2450 | break; | |
2451 | if (ch == 0) | |
17634846 | 2452 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2453 | if (ch == 0) |
17634846 | 2454 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2455 | if (ch) |
336d4a9c | 2456 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2457 | Fset_text_properties (beg, end, plist, tmp); |
2458 | } | |
2459 | UNGCPRO; | |
2460 | return tmp; | |
2461 | } | |
177c0ea7 | 2462 | |
20ea2964 RS |
2463 | /* #@NUMBER is used to skip NUMBER following characters. |
2464 | That's used in .elc files to skip over doc strings | |
2465 | and function definitions. */ | |
2466 | if (c == '@') | |
2467 | { | |
2468 | int i, nskip = 0; | |
2469 | ||
8792be66 | 2470 | load_each_byte = 1; |
20ea2964 RS |
2471 | /* Read a decimal integer. */ |
2472 | while ((c = READCHAR) >= 0 | |
2473 | && c >= '0' && c <= '9') | |
2474 | { | |
2475 | nskip *= 10; | |
2476 | nskip += c - '0'; | |
2477 | } | |
2478 | if (c >= 0) | |
2479 | UNREAD (c); | |
177c0ea7 | 2480 | |
8792be66 KH |
2481 | if (load_force_doc_strings |
2482 | && (EQ (readcharfun, Qget_file_char) | |
2483 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2484 | { |
2485 | /* If we are supposed to force doc strings into core right now, | |
2486 | record the last string that we skipped, | |
2487 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2488 | |
2489 | /* But first exchange saved_doc_string | |
2490 | with prev_saved_doc_string, so we save two strings. */ | |
2491 | { | |
2492 | char *temp = saved_doc_string; | |
2493 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2494 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2495 | int temp_len = saved_doc_string_length; |
2496 | ||
2497 | saved_doc_string = prev_saved_doc_string; | |
2498 | saved_doc_string_size = prev_saved_doc_string_size; | |
2499 | saved_doc_string_position = prev_saved_doc_string_position; | |
2500 | saved_doc_string_length = prev_saved_doc_string_length; | |
2501 | ||
2502 | prev_saved_doc_string = temp; | |
2503 | prev_saved_doc_string_size = temp_size; | |
2504 | prev_saved_doc_string_position = temp_pos; | |
2505 | prev_saved_doc_string_length = temp_len; | |
2506 | } | |
2507 | ||
b2a30870 RS |
2508 | if (saved_doc_string_size == 0) |
2509 | { | |
2510 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2511 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2512 | } |
2513 | if (nskip > saved_doc_string_size) | |
2514 | { | |
2515 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2516 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2517 | saved_doc_string_size); | |
b2a30870 RS |
2518 | } |
2519 | ||
68c45bf0 | 2520 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2521 | |
2522 | /* Copy that many characters into saved_doc_string. */ | |
2523 | for (i = 0; i < nskip && c >= 0; i++) | |
2524 | saved_doc_string[i] = c = READCHAR; | |
2525 | ||
2526 | saved_doc_string_length = i; | |
2527 | } | |
2528 | else | |
b2a30870 RS |
2529 | { |
2530 | /* Skip that many characters. */ | |
2531 | for (i = 0; i < nskip && c >= 0; i++) | |
2532 | c = READCHAR; | |
2533 | } | |
d49f0c1a | 2534 | |
8792be66 | 2535 | load_each_byte = 0; |
20ea2964 RS |
2536 | goto retry; |
2537 | } | |
e2518d02 RS |
2538 | if (c == '!') |
2539 | { | |
2540 | /* #! appears at the beginning of an executable file. | |
2541 | Skip the first line. */ | |
225c7a07 | 2542 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2543 | c = READCHAR; |
2544 | goto retry; | |
2545 | } | |
20ea2964 RS |
2546 | if (c == '$') |
2547 | return Vload_file_name; | |
2b6cae0c RS |
2548 | if (c == '\'') |
2549 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2550 | /* #:foo is the uninterned symbol named foo. */ |
2551 | if (c == ':') | |
2552 | { | |
2553 | uninterned_symbol = 1; | |
2554 | c = READCHAR; | |
2555 | goto default_label; | |
2556 | } | |
2557 | /* Reader forms that can reuse previously read objects. */ | |
2558 | if (c >= '0' && c <= '9') | |
2559 | { | |
2560 | int n = 0; | |
2561 | Lisp_Object tem; | |
2b6cae0c | 2562 | |
4ad679f9 EN |
2563 | /* Read a non-negative integer. */ |
2564 | while (c >= '0' && c <= '9') | |
2565 | { | |
2566 | n *= 10; | |
2567 | n += c - '0'; | |
2568 | c = READCHAR; | |
2569 | } | |
2570 | /* #n=object returns object, but associates it with n for #n#. */ | |
2571 | if (c == '=') | |
2572 | { | |
9e062b6c RS |
2573 | /* Make a placeholder for #n# to use temporarily */ |
2574 | Lisp_Object placeholder; | |
2575 | Lisp_Object cell; | |
2576 | ||
2577 | placeholder = Fcons(Qnil, Qnil); | |
2578 | cell = Fcons (make_number (n), placeholder); | |
2579 | read_objects = Fcons (cell, read_objects); | |
2580 | ||
2581 | /* Read the object itself. */ | |
4ad679f9 | 2582 | tem = read0 (readcharfun); |
9e062b6c RS |
2583 | |
2584 | /* Now put it everywhere the placeholder was... */ | |
2585 | substitute_object_in_subtree (tem, placeholder); | |
2586 | ||
2587 | /* ...and #n# will use the real value from now on. */ | |
2588 | Fsetcdr (cell, tem); | |
177c0ea7 | 2589 | |
4ad679f9 EN |
2590 | return tem; |
2591 | } | |
2592 | /* #n# returns a previously read object. */ | |
2593 | if (c == '#') | |
2594 | { | |
2595 | tem = Fassq (make_number (n), read_objects); | |
2596 | if (CONSP (tem)) | |
2597 | return XCDR (tem); | |
2598 | /* Fall through to error message. */ | |
2599 | } | |
bf5d1a17 GM |
2600 | else if (c == 'r' || c == 'R') |
2601 | return read_integer (readcharfun, n); | |
177c0ea7 | 2602 | |
4ad679f9 EN |
2603 | /* Fall through to error message. */ |
2604 | } | |
bf5d1a17 GM |
2605 | else if (c == 'x' || c == 'X') |
2606 | return read_integer (readcharfun, 16); | |
2607 | else if (c == 'o' || c == 'O') | |
2608 | return read_integer (readcharfun, 8); | |
2609 | else if (c == 'b' || c == 'B') | |
2610 | return read_integer (readcharfun, 2); | |
20ea2964 | 2611 | |
200f684e | 2612 | UNREAD (c); |
336d4a9c | 2613 | invalid_syntax ("#", 1); |
078e7b4a JB |
2614 | |
2615 | case ';': | |
2616 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2617 | goto retry; | |
2618 | ||
2619 | case '\'': | |
2620 | { | |
2621 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2622 | } | |
2623 | ||
17634846 RS |
2624 | case '`': |
2625 | if (first_in_list) | |
9ecb827b SM |
2626 | { |
2627 | Vold_style_backquotes = Qt; | |
2628 | goto default_label; | |
2629 | } | |
17634846 RS |
2630 | else |
2631 | { | |
2632 | Lisp_Object value; | |
2633 | ||
0ffbbdeb | 2634 | new_backquote_flag++; |
17634846 | 2635 | value = read0 (readcharfun); |
0ffbbdeb | 2636 | new_backquote_flag--; |
17634846 RS |
2637 | |
2638 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2639 | } | |
2640 | ||
2641 | case ',': | |
2642 | if (new_backquote_flag) | |
2643 | { | |
2644 | Lisp_Object comma_type = Qnil; | |
2645 | Lisp_Object value; | |
2646 | int ch = READCHAR; | |
2647 | ||
2648 | if (ch == '@') | |
2649 | comma_type = Qcomma_at; | |
2650 | else if (ch == '.') | |
2651 | comma_type = Qcomma_dot; | |
2652 | else | |
2653 | { | |
2654 | if (ch >= 0) UNREAD (ch); | |
2655 | comma_type = Qcomma; | |
2656 | } | |
2657 | ||
0ffbbdeb | 2658 | new_backquote_flag--; |
17634846 | 2659 | value = read0 (readcharfun); |
0ffbbdeb | 2660 | new_backquote_flag++; |
17634846 RS |
2661 | return Fcons (comma_type, Fcons (value, Qnil)); |
2662 | } | |
2663 | else | |
9ecb827b SM |
2664 | { |
2665 | Vold_style_backquotes = Qt; | |
2666 | goto default_label; | |
2667 | } | |
17634846 | 2668 | |
078e7b4a JB |
2669 | case '?': |
2670 | { | |
8792be66 | 2671 | int modifiers; |
df9c2be7 KS |
2672 | int next_char; |
2673 | int ok; | |
f6f79b37 | 2674 | |
078e7b4a | 2675 | c = READCHAR; |
9c97398c GM |
2676 | if (c < 0) |
2677 | end_of_file_error (); | |
078e7b4a | 2678 | |
b9284371 KS |
2679 | /* Accept `single space' syntax like (list ? x) where the |
2680 | whitespace character is SPC or TAB. | |
2681 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2682 | as there are well-established escape sequences for these. */ | |
2683 | if (c == ' ' || c == '\t') | |
2684 | return make_number (c); | |
2685 | ||
078e7b4a | 2686 | if (c == '\\') |
8792be66 KH |
2687 | c = read_escape (readcharfun, 0); |
2688 | modifiers = c & CHAR_MODIFIER_MASK; | |
2689 | c &= ~CHAR_MODIFIER_MASK; | |
2690 | if (CHAR_BYTE8_P (c)) | |
2691 | c = CHAR_TO_BYTE8 (c); | |
2692 | c |= modifiers; | |
078e7b4a | 2693 | |
df9c2be7 KS |
2694 | next_char = READCHAR; |
2695 | if (next_char == '.') | |
2696 | { | |
2697 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2698 | int next_next_char = READCHAR; | |
2699 | UNREAD (next_next_char); | |
2700 | ||
2701 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2702 | || (next_next_char < 0200 |
2703 | && (index ("\"';([#?", next_next_char) | |
2704 | || (!first_in_list && next_next_char == '`') | |
2705 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2706 | } |
2707 | else | |
2708 | { | |
2709 | ok = (next_char <= 040 | |
e613ea97 KH |
2710 | || (next_char < 0200 |
2711 | && (index ("\"';()[]#?", next_char) | |
2712 | || (!first_in_list && next_char == '`') | |
2713 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2714 | } |
2715 | UNREAD (next_char); | |
336d4a9c KS |
2716 | if (ok) |
2717 | return make_number (c); | |
37cd4238 | 2718 | |
336d4a9c | 2719 | invalid_syntax ("?", 1); |
078e7b4a JB |
2720 | } |
2721 | ||
00a9a935 | 2722 | case '"': |
078e7b4a | 2723 | { |
a742d646 GM |
2724 | char *p = read_buffer; |
2725 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2726 | register int c; |
1571601b KH |
2727 | /* Nonzero if we saw an escape sequence specifying |
2728 | a multibyte character. */ | |
e7fc914b | 2729 | int force_multibyte = 0; |
1571601b | 2730 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2731 | a single-byte character. */ |
2732 | int force_singlebyte = 0; | |
078e7b4a | 2733 | int cancel = 0; |
5150eeec | 2734 | int nchars = 0; |
078e7b4a JB |
2735 | |
2736 | while ((c = READCHAR) >= 0 | |
2737 | && c != '\"') | |
2738 | { | |
449fea39 | 2739 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2740 | { |
5d65df0d GM |
2741 | int offset = p - read_buffer; |
2742 | read_buffer = (char *) xrealloc (read_buffer, | |
2743 | read_buffer_size *= 2); | |
2744 | p = read_buffer + offset; | |
078e7b4a JB |
2745 | end = read_buffer + read_buffer_size; |
2746 | } | |
bed23cb2 | 2747 | |
078e7b4a | 2748 | if (c == '\\') |
03e88613 | 2749 | { |
1571601b | 2750 | int modifiers; |
f6f79b37 | 2751 | |
8792be66 | 2752 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2753 | |
2754 | /* C is -1 if \ newline has just been seen */ | |
2755 | if (c == -1) | |
03e88613 | 2756 | { |
bed23cb2 RS |
2757 | if (p == read_buffer) |
2758 | cancel = 1; | |
03e88613 RS |
2759 | continue; |
2760 | } | |
bed23cb2 | 2761 | |
1571601b KH |
2762 | modifiers = c & CHAR_MODIFIER_MASK; |
2763 | c = c & ~CHAR_MODIFIER_MASK; | |
2764 | ||
8792be66 | 2765 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2766 | force_singlebyte = 1; |
8792be66 | 2767 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2768 | force_multibyte = 1; |
8792be66 | 2769 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2770 | { |
2771 | /* Allow `\C- ' and `\C-?'. */ | |
2772 | if (modifiers == CHAR_CTL) | |
2773 | { | |
2774 | if (c == ' ') | |
2775 | c = 0, modifiers = 0; | |
2776 | else if (c == '?') | |
2777 | c = 127, modifiers = 0; | |
2778 | } | |
2779 | if (modifiers & CHAR_SHIFT) | |
2780 | { | |
2781 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2782 | if (c >= 'A' && c <= 'Z') | |
2783 | modifiers &= ~CHAR_SHIFT; | |
2784 | else if (c >= 'a' && c <= 'z') | |
2785 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2786 | } | |
2787 | ||
2788 | if (modifiers & CHAR_META) | |
2789 | { | |
2790 | /* Move the meta bit to the right place for a | |
2791 | string. */ | |
2792 | modifiers &= ~CHAR_META; | |
2793 | c = BYTE8_TO_CHAR (c | 0x80); | |
2794 | force_singlebyte = 1; | |
2795 | } | |
2796 | } | |
5150eeec | 2797 | |
1571601b KH |
2798 | /* Any modifiers remaining are invalid. */ |
2799 | if (modifiers) | |
2800 | error ("Invalid modifier in string"); | |
2801 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2802 | } |
8792be66 | 2803 | else |
5150eeec | 2804 | { |
1571601b | 2805 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2806 | if (CHAR_BYTE8_P (c)) |
2807 | force_singlebyte = 1; | |
2808 | else if (! ASCII_CHAR_P (c)) | |
2809 | force_multibyte = 1; | |
f943104a | 2810 | } |
5150eeec | 2811 | nchars++; |
078e7b4a | 2812 | } |
5150eeec | 2813 | |
6f7f43d5 | 2814 | if (c < 0) |
9c97398c | 2815 | end_of_file_error (); |
078e7b4a JB |
2816 | |
2817 | /* If purifying, and string starts with \ newline, | |
2818 | return zero instead. This is for doc strings | |
08564963 | 2819 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2820 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2821 | return make_number (0); |
2822 | ||
1571601b KH |
2823 | if (force_multibyte) |
2824 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2825 | ; |
1571601b | 2826 | else if (force_singlebyte) |
a742d646 | 2827 | { |
1571601b KH |
2828 | nchars = str_as_unibyte (read_buffer, p - read_buffer); |
2829 | p = read_buffer + nchars; | |
a742d646 | 2830 | } |
e28552a4 | 2831 | else |
1571601b | 2832 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2833 | ; |
e7fc914b | 2834 | |
abb13b09 CW |
2835 | /* We want readchar_count to be the number of characters, not |
2836 | bytes. Hence we adjust for multibyte characters in the | |
2837 | string. ... But it doesn't seem to be necessary, because | |
2838 | READCHAR *does* read multibyte characters from buffers. */ | |
2839 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2840 | if (read_pure) |
491f16a2 | 2841 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2842 | (force_multibyte |
2843 | || (p - read_buffer != nchars))); | |
491f16a2 | 2844 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
2845 | (force_multibyte |
2846 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
2847 | } |
2848 | ||
109d300c JB |
2849 | case '.': |
2850 | { | |
109d300c JB |
2851 | int next_char = READCHAR; |
2852 | UNREAD (next_char); | |
2853 | ||
035eec48 | 2854 | if (next_char <= 040 |
e613ea97 | 2855 | || (next_char < 0200 |
95af0924 KS |
2856 | && (index ("\"';([#?", next_char) |
2857 | || (!first_in_list && next_char == '`') | |
2858 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2859 | { |
6428369f KH |
2860 | *pch = c; |
2861 | return Qnil; | |
109d300c JB |
2862 | } |
2863 | ||
2864 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2865 | below will now loop at least once, assuring that we will not | |
2866 | try to UNREAD two characters in a row. */ | |
2867 | } | |
078e7b4a | 2868 | default: |
17634846 | 2869 | default_label: |
88852d45 | 2870 | if (c <= 040) goto retry; |
adef3de7 RS |
2871 | if (c == 0x8a0) /* NBSP */ |
2872 | goto retry; | |
078e7b4a | 2873 | { |
38404229 | 2874 | char *p = read_buffer; |
481c6336 | 2875 | int quoted = 0; |
078e7b4a JB |
2876 | |
2877 | { | |
38404229 | 2878 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2879 | |
6f7f43d5 | 2880 | while (c > 040 |
adef3de7 | 2881 | && c != 0x8a0 /* NBSP */ |
e613ea97 KH |
2882 | && (c >= 0200 |
2883 | || (!index ("\"';()[]#", c) | |
2884 | && !(!first_in_list && c == '`') | |
2885 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2886 | { |
449fea39 | 2887 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2888 | { |
5d65df0d GM |
2889 | int offset = p - read_buffer; |
2890 | read_buffer = (char *) xrealloc (read_buffer, | |
2891 | read_buffer_size *= 2); | |
2892 | p = read_buffer + offset; | |
078e7b4a JB |
2893 | end = read_buffer + read_buffer_size; |
2894 | } | |
177c0ea7 | 2895 | |
078e7b4a | 2896 | if (c == '\\') |
481c6336 RS |
2897 | { |
2898 | c = READCHAR; | |
4ab11c09 GM |
2899 | if (c == -1) |
2900 | end_of_file_error (); | |
481c6336 RS |
2901 | quoted = 1; |
2902 | } | |
6f7f43d5 | 2903 | |
1202434b KH |
2904 | if (multibyte) |
2905 | p += CHAR_STRING (c, p); | |
2906 | else | |
2907 | *p++ = c; | |
078e7b4a JB |
2908 | c = READCHAR; |
2909 | } | |
2910 | ||
2911 | if (p == end) | |
2912 | { | |
5d65df0d GM |
2913 | int offset = p - read_buffer; |
2914 | read_buffer = (char *) xrealloc (read_buffer, | |
2915 | read_buffer_size *= 2); | |
2916 | p = read_buffer + offset; | |
2917 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2918 | } |
2919 | *p = 0; | |
2920 | if (c >= 0) | |
2921 | UNREAD (c); | |
2922 | } | |
2923 | ||
4ad679f9 | 2924 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2925 | { |
2926 | register char *p1; | |
2927 | register Lisp_Object val; | |
2928 | p1 = read_buffer; | |
2929 | if (*p1 == '+' || *p1 == '-') p1++; | |
2930 | /* Is it an integer? */ | |
2931 | if (p1 != p) | |
2932 | { | |
2933 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2934 | /* Integers can have trailing decimal points. */ |
2935 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2936 | if (p1 == p) |
2937 | /* It is an integer. */ | |
2938 | { | |
481c6336 RS |
2939 | if (p1[-1] == '.') |
2940 | p1[-1] = '\0'; | |
74214d16 DL |
2941 | /* Fixme: if we have strtol, use that, and check |
2942 | for overflow. */ | |
faca07fb RS |
2943 | if (sizeof (int) == sizeof (EMACS_INT)) |
2944 | XSETINT (val, atoi (read_buffer)); | |
2945 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2946 | XSETINT (val, atol (read_buffer)); | |
2947 | else | |
2948 | abort (); | |
481c6336 RS |
2949 | return val; |
2950 | } | |
2951 | } | |
481c6336 | 2952 | if (isfloat_string (read_buffer)) |
eb659c41 | 2953 | { |
a8972052 PE |
2954 | /* Compute NaN and infinities using 0.0 in a variable, |
2955 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2956 | than we are. */ |
3c329963 | 2957 | double zero = 0.0; |
a8972052 PE |
2958 | |
2959 | double value; | |
2960 | ||
2961 | /* Negate the value ourselves. This treats 0, NaNs, | |
2962 | and infinity properly on IEEE floating point hosts, | |
2963 | and works around a common bug where atof ("-0.0") | |
2964 | drops the sign. */ | |
2965 | int negative = read_buffer[0] == '-'; | |
2966 | ||
2967 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2968 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2969 | switch (p[-1]) |
eb659c41 | 2970 | { |
a8972052 PE |
2971 | case 'F': |
2972 | value = 1.0 / zero; | |
2973 | break; | |
2974 | case 'N': | |
2975 | value = zero / zero; | |
7690cbb0 RS |
2976 | |
2977 | /* If that made a "negative" NaN, negate it. */ | |
2978 | ||
2979 | { | |
2980 | int i; | |
2981 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2982 | ||
2983 | u_data.d = value; | |
2984 | u_minus_zero.d = - 0.0; | |
2985 | for (i = 0; i < sizeof (double); i++) | |
2986 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2987 | { | |
2988 | value = - value; | |
2989 | break; | |
2990 | } | |
2991 | } | |
2992 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2993 | break; |
2994 | default: | |
2995 | value = atof (read_buffer + negative); | |
2996 | break; | |
eb659c41 | 2997 | } |
a8972052 PE |
2998 | |
2999 | return make_float (negative ? - value : value); | |
eb659c41 | 3000 | } |
481c6336 | 3001 | } |
abb13b09 | 3002 | { |
e93abe3d KH |
3003 | Lisp_Object name, result; |
3004 | EMACS_INT nbytes = p - read_buffer; | |
3005 | EMACS_INT nchars | |
3006 | = (multibyte ? multibyte_chars_in_text (read_buffer, nbytes) | |
3007 | : nbytes); | |
3008 | ||
3009 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
3010 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
3011 | else | |
3012 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
3013 | result = (uninterned_symbol ? Fmake_symbol (name) | |
3014 | : Fintern (name, Qnil)); | |
1202434b | 3015 | |
abb13b09 CW |
3016 | if (EQ (Vread_with_symbol_positions, Qt) |
3017 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 3018 | Vread_symbol_positions_list = |
abb13b09 CW |
3019 | /* Kind of a hack; this will probably fail if characters |
3020 | in the symbol name were escaped. Not really a big | |
3021 | deal, though. */ | |
f74db720 SM |
3022 | Fcons (Fcons (result, |
3023 | make_number (readchar_count | |
3024 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
3025 | Vread_symbol_positions_list); |
3026 | return result; | |
3027 | } | |
078e7b4a JB |
3028 | } |
3029 | } | |
3030 | } | |
3031 | \f | |
9e062b6c RS |
3032 | |
3033 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
3034 | static Lisp_Object seen_list; | |
3035 | ||
3036 | static void | |
3037 | substitute_object_in_subtree (object, placeholder) | |
3038 | Lisp_Object object; | |
3039 | Lisp_Object placeholder; | |
3040 | { | |
3041 | Lisp_Object check_object; | |
3042 | ||
3043 | /* We haven't seen any objects when we start. */ | |
3044 | seen_list = Qnil; | |
3045 | ||
3046 | /* Make all the substitutions. */ | |
3047 | check_object | |
3048 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3049 | |
9e062b6c RS |
3050 | /* Clear seen_list because we're done with it. */ |
3051 | seen_list = Qnil; | |
3052 | ||
3053 | /* The returned object here is expected to always eq the | |
3054 | original. */ | |
3055 | if (!EQ (check_object, object)) | |
3056 | error ("Unexpected mutation error in reader"); | |
3057 | } | |
3058 | ||
3059 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3060 | #define SUBSTITUTE(get_val, set_val) \ |
3061 | do { \ | |
3062 | Lisp_Object old_value = get_val; \ | |
3063 | Lisp_Object true_value \ | |
3064 | = substitute_object_recurse (object, placeholder, \ | |
3065 | old_value); \ | |
3066 | \ | |
3067 | if (!EQ (old_value, true_value)) \ | |
3068 | { \ | |
3069 | set_val; \ | |
3070 | } \ | |
3071 | } while (0) | |
9e062b6c RS |
3072 | |
3073 | static Lisp_Object | |
3074 | substitute_object_recurse (object, placeholder, subtree) | |
3075 | Lisp_Object object; | |
3076 | Lisp_Object placeholder; | |
3077 | Lisp_Object subtree; | |
3078 | { | |
3079 | /* If we find the placeholder, return the target object. */ | |
3080 | if (EQ (placeholder, subtree)) | |
3081 | return object; | |
3082 | ||
3083 | /* If we've been to this node before, don't explore it again. */ | |
3084 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3085 | return subtree; | |
3086 | ||
3087 | /* If this node can be the entry point to a cycle, remember that | |
3088 | we've seen it. It can only be such an entry point if it was made | |
3089 | by #n=, which means that we can find it as a value in | |
3090 | read_objects. */ | |
3091 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3092 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3093 | |
9e062b6c RS |
3094 | /* Recurse according to subtree's type. |
3095 | Every branch must return a Lisp_Object. */ | |
3096 | switch (XTYPE (subtree)) | |
3097 | { | |
3098 | case Lisp_Vectorlike: | |
3099 | { | |
7a3d90dc SM |
3100 | int i, length = 0; |
3101 | if (BOOL_VECTOR_P (subtree)) | |
3102 | return subtree; /* No sub-objects anyway. */ | |
3103 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3104 | || COMPILEDP (subtree)) | |
3105 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3106 | else if (VECTORP (subtree)) | |
3107 | length = ASIZE (subtree); | |
3108 | else | |
3109 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3110 | can't just blindly traverse all its fields. We used to call | |
3111 | `Flength' which signalled `sequencep', so I just preserved this | |
3112 | behavior. */ | |
3113 | wrong_type_argument (Qsequencep, subtree); | |
3114 | ||
9e062b6c | 3115 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3116 | SUBSTITUTE (AREF (subtree, i), |
3117 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3118 | return subtree; |
3119 | } | |
3120 | ||
3121 | case Lisp_Cons: | |
3122 | { | |
7a3d90dc SM |
3123 | SUBSTITUTE (XCAR (subtree), |
3124 | XSETCAR (subtree, true_value)); | |
3125 | SUBSTITUTE (XCDR (subtree), | |
3126 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3127 | return subtree; |
3128 | } | |
3129 | ||
9e062b6c RS |
3130 | case Lisp_String: |
3131 | { | |
3132 | /* Check for text properties in each interval. | |
e61b9b87 | 3133 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3134 | |
d5db4077 | 3135 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3136 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3137 | |
0d74b006 SM |
3138 | traverse_intervals_noorder (root_interval, |
3139 | &substitute_in_interval, arg); | |
9e062b6c RS |
3140 | |
3141 | return subtree; | |
3142 | } | |
9e062b6c RS |
3143 | |
3144 | /* Other types don't recurse any further. */ | |
3145 | default: | |
3146 | return subtree; | |
3147 | } | |
3148 | } | |
3149 | ||
3150 | /* Helper function for substitute_object_recurse. */ | |
3151 | static void | |
3152 | substitute_in_interval (interval, arg) | |
3153 | INTERVAL interval; | |
3154 | Lisp_Object arg; | |
3155 | { | |
3156 | Lisp_Object object = Fcar (arg); | |
3157 | Lisp_Object placeholder = Fcdr (arg); | |
3158 | ||
3159 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
3160 | } | |
3161 | ||
3162 | \f | |
078e7b4a JB |
3163 | #define LEAD_INT 1 |
3164 | #define DOT_CHAR 2 | |
3165 | #define TRAIL_INT 4 | |
3166 | #define E_CHAR 8 | |
3167 | #define EXP_INT 16 | |
3168 | ||
3169 | int | |
3170 | isfloat_string (cp) | |
3171 | register char *cp; | |
3172 | { | |
c1a2f60a | 3173 | register int state; |
177c0ea7 | 3174 | |
d8578e58 RS |
3175 | char *start = cp; |
3176 | ||
078e7b4a JB |
3177 | state = 0; |
3178 | if (*cp == '+' || *cp == '-') | |
3179 | cp++; | |
3180 | ||
075027b1 | 3181 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3182 | { |
3183 | state |= LEAD_INT; | |
075027b1 RS |
3184 | while (*cp >= '0' && *cp <= '9') |
3185 | cp++; | |
078e7b4a JB |
3186 | } |
3187 | if (*cp == '.') | |
3188 | { | |
3189 | state |= DOT_CHAR; | |
3190 | cp++; | |
3191 | } | |
075027b1 | 3192 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3193 | { |
3194 | state |= TRAIL_INT; | |
075027b1 | 3195 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3196 | cp++; |
3197 | } | |
a35f88bf | 3198 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3199 | { |
3200 | state |= E_CHAR; | |
3201 | cp++; | |
e73997a1 RS |
3202 | if (*cp == '+' || *cp == '-') |
3203 | cp++; | |
078e7b4a | 3204 | } |
078e7b4a | 3205 | |
075027b1 | 3206 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3207 | { |
3208 | state |= EXP_INT; | |
075027b1 | 3209 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3210 | cp++; |
3211 | } | |
d8578e58 RS |
3212 | else if (cp == start) |
3213 | ; | |
eb659c41 RS |
3214 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3215 | { | |
3216 | state |= EXP_INT; | |
3217 | cp += 3; | |
3218 | } | |
3219 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3220 | { | |
3221 | state |= EXP_INT; | |
3222 | cp += 3; | |
3223 | } | |
3224 | ||
37579d7c | 3225 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 3226 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3227 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3228 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3229 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3230 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3231 | } |
cc94f3b2 | 3232 | |
078e7b4a JB |
3233 | \f |
3234 | static Lisp_Object | |
c15cfd1f | 3235 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 3236 | Lisp_Object readcharfun; |
c15cfd1f | 3237 | int bytecodeflag; |
078e7b4a JB |
3238 | { |
3239 | register int i; | |
3240 | register int size; | |
3241 | register Lisp_Object *ptr; | |
c15cfd1f | 3242 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3243 | register struct Lisp_Cons *otem; |
3244 | Lisp_Object len; | |
3245 | ||
3246 | tem = read_list (1, readcharfun); | |
3247 | len = Flength (tem); | |
3248 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3249 | ||
078e7b4a JB |
3250 | size = XVECTOR (vector)->size; |
3251 | ptr = XVECTOR (vector)->contents; | |
3252 | for (i = 0; i < size; i++) | |
3253 | { | |
c15cfd1f RS |
3254 | item = Fcar (tem); |
3255 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3256 | bytecode object, the docstring containing the bytecode and | |
3257 | constants values must be treated as unibyte and passed to | |
3258 | Fread, to get the actual bytecode string and constants vector. */ | |
3259 | if (bytecodeflag && load_force_doc_strings) | |
3260 | { | |
3261 | if (i == COMPILED_BYTECODE) | |
3262 | { | |
3263 | if (!STRINGP (item)) | |
6fa2b890 | 3264 | error ("Invalid byte code"); |
c15cfd1f RS |
3265 | |
3266 | /* Delay handling the bytecode slot until we know whether | |
3267 | it is lazily-loaded (we can tell by whether the | |
3268 | constants slot is nil). */ | |
3269 | ptr[COMPILED_CONSTANTS] = item; | |
3270 | item = Qnil; | |
3271 | } | |
3272 | else if (i == COMPILED_CONSTANTS) | |
3273 | { | |
3274 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3275 | ||
3276 | if (NILP (item)) | |
3277 | { | |
3278 | /* Coerce string to unibyte (like string-as-unibyte, | |
3279 | but without generating extra garbage and | |
3280 | guaranteeing no change in the contents). */ | |
bee91904 | 3281 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3282 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3283 | |
8792be66 | 3284 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3285 | if (!CONSP (item)) |
6fa2b890 | 3286 | error ("Invalid byte code"); |
c15cfd1f RS |
3287 | |
3288 | otem = XCONS (item); | |
c1d497be KR |
3289 | bytestr = XCAR (item); |
3290 | item = XCDR (item); | |
c15cfd1f RS |
3291 | free_cons (otem); |
3292 | } | |
3293 | ||
3294 | /* Now handle the bytecode slot. */ | |
3295 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3296 | } | |
8792be66 KH |
3297 | else if (i == COMPILED_DOC_STRING |
3298 | && STRINGP (item) | |
3299 | && ! STRING_MULTIBYTE (item)) | |
3300 | { | |
3301 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3302 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3303 | else | |
3304 | item = Fstring_as_multibyte (item); | |
3305 | } | |
c15cfd1f RS |
3306 | } |
3307 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3308 | otem = XCONS (tem); |
3309 | tem = Fcdr (tem); | |
3310 | free_cons (otem); | |
3311 | } | |
3312 | return vector; | |
3313 | } | |
177c0ea7 | 3314 | |
6f7f43d5 RS |
3315 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3316 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3317 | and make structure pure. */ |
3318 | ||
3319 | static Lisp_Object | |
3320 | read_list (flag, readcharfun) | |
3321 | int flag; | |
3322 | register Lisp_Object readcharfun; | |
3323 | { | |
3324 | /* -1 means check next element for defun, | |
3325 | 0 means don't check, | |
3326 | 1 means already checked and found defun. */ | |
3327 | int defunflag = flag < 0 ? -1 : 0; | |
3328 | Lisp_Object val, tail; | |
3329 | register Lisp_Object elt, tem; | |
3330 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3331 | /* 0 is the normal case. |
b2a30870 | 3332 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3333 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3334 | int doc_reference = 0; |
078e7b4a | 3335 | |
17634846 RS |
3336 | /* Initialize this to 1 if we are reading a list. */ |
3337 | int first_in_list = flag <= 0; | |
3338 | ||
078e7b4a JB |
3339 | val = Qnil; |
3340 | tail = Qnil; | |
3341 | ||
3342 | while (1) | |
3343 | { | |
e28552a4 | 3344 | int ch; |
078e7b4a | 3345 | GCPRO2 (val, tail); |
17634846 | 3346 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3347 | UNGCPRO; |
20ea2964 | 3348 | |
17634846 RS |
3349 | first_in_list = 0; |
3350 | ||
821d417e | 3351 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3352 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3353 | && ! NILP (elt) |
821d417e RS |
3354 | && !NILP (Vpurify_flag)) |
3355 | { | |
3356 | if (NILP (Vdoc_file_name)) | |
3357 | /* We have not yet called Snarf-documentation, so assume | |
3358 | this file is described in the DOC-MM.NN file | |
3359 | and Snarf-documentation will fill in the right value later. | |
3360 | For now, replace the whole list with 0. */ | |
3361 | doc_reference = 1; | |
3362 | else | |
3363 | /* We have already called Snarf-documentation, so make a relative | |
3364 | file name for this file, so it can be found properly | |
3365 | in the installed Lisp directory. | |
3366 | We don't use Fexpand_file_name because that would make | |
3367 | the directory absolute now. */ | |
3368 | elt = concat2 (build_string ("../lisp/"), | |
3369 | Ffile_name_nondirectory (elt)); | |
3370 | } | |
b2a30870 | 3371 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3372 | && ! NILP (elt) |
b2a30870 RS |
3373 | && load_force_doc_strings) |
3374 | doc_reference = 2; | |
20ea2964 | 3375 | |
6428369f | 3376 | if (ch) |
078e7b4a JB |
3377 | { |
3378 | if (flag > 0) | |
3379 | { | |
6428369f | 3380 | if (ch == ']') |
078e7b4a | 3381 | return val; |
336d4a9c | 3382 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3383 | } |
6428369f | 3384 | if (ch == ')') |
078e7b4a | 3385 | return val; |
6428369f | 3386 | if (ch == '.') |
078e7b4a JB |
3387 | { |
3388 | GCPRO2 (val, tail); | |
265a9e55 | 3389 | if (!NILP (tail)) |
f5df591a | 3390 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3391 | else |
3392 | val = read0 (readcharfun); | |
17634846 | 3393 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3394 | UNGCPRO; |
6428369f | 3395 | if (ch == ')') |
821d417e RS |
3396 | { |
3397 | if (doc_reference == 1) | |
3398 | return make_number (0); | |
b2a30870 RS |
3399 | if (doc_reference == 2) |
3400 | { | |
3401 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3402 | If it's in saved_doc_string, get it from there. |
3403 | ||
3404 | Here, we don't know if the string is a | |
3405 | bytecode string or a doc string. As a | |
3406 | bytecode string must be unibyte, we always | |
3407 | return a unibyte string. If it is actually a | |
3408 | doc string, caller must make it | |
3409 | multibyte. */ | |
8f924df7 | 3410 | |
c1d497be | 3411 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3412 | /* Position is negative for user variables. */ |
3413 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3414 | if (pos >= saved_doc_string_position |
3415 | && pos < (saved_doc_string_position | |
3416 | + saved_doc_string_length)) | |
3417 | { | |
3418 | int start = pos - saved_doc_string_position; | |
3419 | int from, to; | |
3420 | ||
3421 | /* Process quoting with ^A, | |
3422 | and find the end of the string, | |
3423 | which is marked with ^_ (037). */ | |
3424 | for (from = start, to = start; | |
3425 | saved_doc_string[from] != 037;) | |
3426 | { | |
3427 | int c = saved_doc_string[from++]; | |
3428 | if (c == 1) | |
3429 | { | |
3430 | c = saved_doc_string[from++]; | |
3431 | if (c == 1) | |
3432 | saved_doc_string[to++] = c; | |
3433 | else if (c == '0') | |
3434 | saved_doc_string[to++] = 0; | |
3435 | else if (c == '_') | |
3436 | saved_doc_string[to++] = 037; | |
3437 | } | |
3438 | else | |
3439 | saved_doc_string[to++] = c; | |
3440 | } | |
3441 | ||
8792be66 KH |
3442 | return make_unibyte_string (saved_doc_string + start, |
3443 | to - start); | |
b2a30870 | 3444 | } |
c15cfd1f RS |
3445 | /* Look in prev_saved_doc_string the same way. */ |
3446 | else if (pos >= prev_saved_doc_string_position | |
3447 | && pos < (prev_saved_doc_string_position | |
3448 | + prev_saved_doc_string_length)) | |
3449 | { | |
3450 | int start = pos - prev_saved_doc_string_position; | |
3451 | int from, to; | |
3452 | ||
3453 | /* Process quoting with ^A, | |
3454 | and find the end of the string, | |
3455 | which is marked with ^_ (037). */ | |
3456 | for (from = start, to = start; | |
3457 | prev_saved_doc_string[from] != 037;) | |
3458 | { | |
3459 | int c = prev_saved_doc_string[from++]; | |
3460 | if (c == 1) | |
3461 | { | |
3462 | c = prev_saved_doc_string[from++]; | |
3463 | if (c == 1) | |
3464 | prev_saved_doc_string[to++] = c; | |
3465 | else if (c == '0') | |
3466 | prev_saved_doc_string[to++] = 0; | |
3467 | else if (c == '_') | |
3468 | prev_saved_doc_string[to++] = 037; | |
3469 | } | |
3470 | else | |
3471 | prev_saved_doc_string[to++] = c; | |
3472 | } | |
3473 | ||
8792be66 KH |
3474 | return make_unibyte_string (prev_saved_doc_string |
3475 | + start, | |
3476 | to - start); | |
c15cfd1f | 3477 | } |
b2a30870 | 3478 | else |
8792be66 | 3479 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3480 | } |
3481 | ||
821d417e RS |
3482 | return val; |
3483 | } | |
336d4a9c | 3484 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3485 | } |
336d4a9c | 3486 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3487 | } |
3488 | tem = (read_pure && flag <= 0 | |
3489 | ? pure_cons (elt, Qnil) | |
3490 | : Fcons (elt, Qnil)); | |
265a9e55 | 3491 | if (!NILP (tail)) |
f5df591a | 3492 | XSETCDR (tail, tem); |
078e7b4a JB |
3493 | else |
3494 | val = tem; | |
3495 | tail = tem; | |
3496 | if (defunflag < 0) | |
3497 | defunflag = EQ (elt, Qdefun); | |
3498 | else if (defunflag > 0) | |
3499 | read_pure = 1; | |
3500 | } | |
3501 | } | |
3502 | \f | |
3503 | Lisp_Object Vobarray; | |
3504 | Lisp_Object initial_obarray; | |
3505 | ||
d007f5c8 RS |
3506 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3507 | ||
3508 | int oblookup_last_bucket_number; | |
3509 | ||
3510 | static int hash_string (); | |
d007f5c8 RS |
3511 | |
3512 | /* Get an error if OBARRAY is not an obarray. | |
3513 | If it is one, return it. */ | |
3514 | ||
078e7b4a JB |
3515 | Lisp_Object |
3516 | check_obarray (obarray) | |
3517 | Lisp_Object obarray; | |
3518 | { | |
8878319c | 3519 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3520 | { |
3521 | /* If Vobarray is now invalid, force it to be valid. */ | |
3522 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3523 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3524 | } |
3525 | return obarray; | |
3526 | } | |
3527 | ||
d007f5c8 RS |
3528 | /* Intern the C string STR: return a symbol with that name, |
3529 | interned in the current obarray. */ | |
078e7b4a JB |
3530 | |
3531 | Lisp_Object | |
3532 | intern (str) | |
4b2dd274 | 3533 | const char *str; |
078e7b4a JB |
3534 | { |
3535 | Lisp_Object tem; | |
3536 | int len = strlen (str); | |
153a17b7 | 3537 | Lisp_Object obarray; |
078e7b4a | 3538 | |
153a17b7 | 3539 | obarray = Vobarray; |
cfff016d | 3540 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3541 | obarray = check_obarray (obarray); |
e28552a4 | 3542 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3543 | if (SYMBOLP (tem)) |
078e7b4a | 3544 | return tem; |
87631ef7 | 3545 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3546 | } |
4ad679f9 EN |
3547 | |
3548 | /* Create an uninterned symbol with name STR. */ | |
3549 | ||
3550 | Lisp_Object | |
3551 | make_symbol (str) | |
3552 | char *str; | |
3553 | { | |
3554 | int len = strlen (str); | |
3555 | ||
3556 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3557 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3558 | : make_string (str, len))); |
3559 | } | |
d007f5c8 | 3560 | \f |
078e7b4a | 3561 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3562 | doc: /* Return the canonical symbol whose name is STRING. |
3563 | If there is none, one is created by this function and returned. | |
3564 | A second optional argument specifies the obarray to use; | |
3565 | it defaults to the value of `obarray'. */) | |
3566 | (string, obarray) | |
9391b698 | 3567 | Lisp_Object string, obarray; |
078e7b4a JB |
3568 | { |
3569 | register Lisp_Object tem, sym, *ptr; | |
3570 | ||
265a9e55 | 3571 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3572 | obarray = check_obarray (obarray); |
3573 | ||
b7826503 | 3574 | CHECK_STRING (string); |
078e7b4a | 3575 | |
d5db4077 KR |
3576 | tem = oblookup (obarray, SDATA (string), |
3577 | SCHARS (string), | |
3578 | SBYTES (string)); | |
cfff016d | 3579 | if (!INTEGERP (tem)) |
078e7b4a JB |
3580 | return tem; |
3581 | ||
265a9e55 | 3582 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3583 | string = Fpurecopy (string); |
3584 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3585 | |
3586 | if (EQ (obarray, initial_obarray)) | |
3587 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3588 | else | |
3589 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3590 | |
d5db4077 | 3591 | if ((SREF (string, 0) == ':') |
a458d45d | 3592 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3593 | { |
3594 | XSYMBOL (sym)->constant = 1; | |
3595 | XSYMBOL (sym)->value = sym; | |
3596 | } | |
a0549832 | 3597 | |
078e7b4a | 3598 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3599 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3600 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3601 | else | |
3602 | XSYMBOL (sym)->next = 0; | |
3603 | *ptr = sym; | |
3604 | return sym; | |
3605 | } | |
3606 | ||
3607 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3608 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3609 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3610 | symbol is searched for. | |
3611 | A second optional argument specifies the obarray to use; | |
3612 | it defaults to the value of `obarray'. */) | |
3613 | (name, obarray) | |
b55048d4 | 3614 | Lisp_Object name, obarray; |
078e7b4a | 3615 | { |
c2d47f4b | 3616 | register Lisp_Object tem, string; |
078e7b4a | 3617 | |
265a9e55 | 3618 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3619 | obarray = check_obarray (obarray); |
3620 | ||
b55048d4 GM |
3621 | if (!SYMBOLP (name)) |
3622 | { | |
b7826503 | 3623 | CHECK_STRING (name); |
c2d47f4b | 3624 | string = name; |
b55048d4 GM |
3625 | } |
3626 | else | |
c2d47f4b | 3627 | string = SYMBOL_NAME (name); |
078e7b4a | 3628 | |
c2d47f4b | 3629 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3630 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3631 | return Qnil; | |
3632 | else | |
078e7b4a | 3633 | return tem; |
078e7b4a | 3634 | } |
d007f5c8 RS |
3635 | \f |
3636 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3637 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3638 | The value is t if a symbol was found and deleted, nil otherwise. | |
3639 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3640 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3641 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3642 | (name, obarray) | |
d007f5c8 RS |
3643 | Lisp_Object name, obarray; |
3644 | { | |
3645 | register Lisp_Object string, tem; | |
3646 | int hash; | |
3647 | ||
3648 | if (NILP (obarray)) obarray = Vobarray; | |
3649 | obarray = check_obarray (obarray); | |
3650 | ||
3651 | if (SYMBOLP (name)) | |
d4c83cae | 3652 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3653 | else |
3654 | { | |
b7826503 | 3655 | CHECK_STRING (name); |
d007f5c8 RS |
3656 | string = name; |
3657 | } | |
3658 | ||
d5db4077 KR |
3659 | tem = oblookup (obarray, SDATA (string), |
3660 | SCHARS (string), | |
3661 | SBYTES (string)); | |
d007f5c8 RS |
3662 | if (INTEGERP (tem)) |
3663 | return Qnil; | |
3664 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3665 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3666 | return Qnil; | |
3667 | ||
44c6c019 GM |
3668 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3669 | XSYMBOL (tem)->constant = 0; | |
3670 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3671 | |
d007f5c8 RS |
3672 | hash = oblookup_last_bucket_number; |
3673 | ||
3674 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3675 | { |
3676 | if (XSYMBOL (tem)->next) | |
3677 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3678 | else | |
3679 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3680 | } | |
d007f5c8 RS |
3681 | else |
3682 | { | |
3683 | Lisp_Object tail, following; | |
3684 | ||
3685 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3686 | XSYMBOL (tail)->next; | |
3687 | tail = following) | |
3688 | { | |
3689 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3690 | if (EQ (following, tem)) | |
3691 | { | |
3692 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3693 | break; | |
3694 | } | |
3695 | } | |
3696 | } | |
3697 | ||
3698 | return Qt; | |
3699 | } | |
3700 | \f | |
3701 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3702 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3703 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3704 | |
3705 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3706 | |
3707 | Lisp_Object | |
e28552a4 | 3708 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3709 | Lisp_Object obarray; |
4b2dd274 | 3710 | register const char *ptr; |
e28552a4 | 3711 | int size, size_byte; |
078e7b4a | 3712 | { |
7a70b397 RS |
3713 | int hash; |
3714 | int obsize; | |
078e7b4a JB |
3715 | register Lisp_Object tail; |
3716 | Lisp_Object bucket, tem; | |
3717 | ||
cfff016d | 3718 | if (!VECTORP (obarray) |
7c79a684 | 3719 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3720 | { |
3721 | obarray = check_obarray (obarray); | |
3722 | obsize = XVECTOR (obarray)->size; | |
3723 | } | |
519418b3 RS |
3724 | /* This is sometimes needed in the middle of GC. */ |
3725 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3726 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3727 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3728 | hash %= obsize; |
3729 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3730 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3731 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3732 | ; |
cfff016d | 3733 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3734 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3735 | else |
3736 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3737 | { |
d5db4077 KR |
3738 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3739 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3740 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3741 | return tail; |
3742 | else if (XSYMBOL (tail)->next == 0) | |
3743 | break; | |
3744 | } | |
1805de4f | 3745 | XSETINT (tem, hash); |
078e7b4a JB |
3746 | return tem; |
3747 | } | |
3748 | ||
3749 | static int | |
3750 | hash_string (ptr, len) | |
4b2dd274 | 3751 | const unsigned char *ptr; |
078e7b4a JB |
3752 | int len; |
3753 | { | |
4b2dd274 KR |
3754 | register const unsigned char *p = ptr; |
3755 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3756 | register unsigned char c; |
3757 | register int hash = 0; | |
3758 | ||
3759 | while (p != end) | |
3760 | { | |
3761 | c = *p++; | |
3762 | if (c >= 0140) c -= 40; | |
3763 | hash = ((hash<<3) + (hash>>28) + c); | |
3764 | } | |
3765 | return hash & 07777777777; | |
3766 | } | |
d007f5c8 | 3767 | \f |
078e7b4a JB |
3768 | void |
3769 | map_obarray (obarray, fn, arg) | |
3770 | Lisp_Object obarray; | |
d5b28a9d | 3771 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3772 | Lisp_Object arg; |
3773 | { | |
3774 | register int i; | |
3775 | register Lisp_Object tail; | |
b7826503 | 3776 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3777 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3778 | { | |
3779 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3780 | if (SYMBOLP (tail)) |
078e7b4a JB |
3781 | while (1) |
3782 | { | |
3783 | (*fn) (tail, arg); | |
3784 | if (XSYMBOL (tail)->next == 0) | |
3785 | break; | |
1805de4f | 3786 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3787 | } |
3788 | } | |
3789 | } | |
3790 | ||
d5b28a9d | 3791 | void |
078e7b4a JB |
3792 | mapatoms_1 (sym, function) |
3793 | Lisp_Object sym, function; | |
3794 | { | |
3795 | call1 (function, sym); | |
3796 | } | |
3797 | ||
3798 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3799 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3800 | OBARRAY defaults to the value of `obarray'. */) | |
3801 | (function, obarray) | |
078e7b4a JB |
3802 | Lisp_Object function, obarray; |
3803 | { | |
265a9e55 | 3804 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3805 | obarray = check_obarray (obarray); |
3806 | ||
3807 | map_obarray (obarray, mapatoms_1, function); | |
3808 | return Qnil; | |
3809 | } | |
3810 | ||
5e88a39e | 3811 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3812 | |
3813 | void | |
3814 | init_obarray () | |
3815 | { | |
3816 | Lisp_Object oblength; | |
3817 | int hash; | |
3818 | Lisp_Object *tem; | |
3819 | ||
baf69866 | 3820 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3821 | |
491f16a2 | 3822 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3823 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3824 | initial_obarray = Vobarray; | |
3825 | staticpro (&initial_obarray); | |
3826 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3827 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3828 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3829 | |
078e7b4a JB |
3830 | /* These locals are to kludge around a pyramid compiler bug. */ |
3831 | hash = hash_string ("nil", 3); | |
3832 | /* Separate statement here to avoid VAXC bug. */ | |
3833 | hash %= OBARRAY_SIZE; | |
3834 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3835 | *tem = Qnil; | |
3836 | ||
491f16a2 | 3837 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3838 | XSYMBOL (Qnil)->function = Qunbound; |
3839 | XSYMBOL (Qunbound)->value = Qunbound; | |
3840 | XSYMBOL (Qunbound)->function = Qunbound; | |
3841 | ||
3842 | Qt = intern ("t"); | |
3843 | XSYMBOL (Qnil)->value = Qnil; | |
3844 | XSYMBOL (Qnil)->plist = Qnil; | |
3845 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3846 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3847 | |
3848 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3849 | Vpurify_flag = Qt; | |
3850 | ||
3851 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3852 | staticpro (&Qvariable_documentation); |
078e7b4a | 3853 | |
449fea39 | 3854 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3855 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3856 | } |
3857 | \f | |
3858 | void | |
3859 | defsubr (sname) | |
3860 | struct Lisp_Subr *sname; | |
3861 | { | |
3862 | Lisp_Object sym; | |
3863 | sym = intern (sname->symbol_name); | |
5a6891e2 | 3864 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 3865 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3866 | } |
3867 | ||
3868 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3869 | void | |
3870 | defalias (sname, string) | |
3871 | struct Lisp_Subr *sname; | |
3872 | char *string; | |
3873 | { | |
3874 | Lisp_Object sym; | |
3875 | sym = intern (string); | |
1805de4f | 3876 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3877 | } |
3878 | #endif /* NOTDEF */ | |
3879 | ||
078e7b4a | 3880 | /* Define an "integer variable"; a symbol whose value is forwarded |
0f011df0 JB |
3881 | to a C variable of type int. Sample call: |
3882 | DEFVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 3883 | void |
e9e00ff2 | 3884 | defvar_int (namestring, address) |
078e7b4a | 3885 | char *namestring; |
31ade731 | 3886 | EMACS_INT *address; |
078e7b4a | 3887 | { |
1a0f90f7 | 3888 | Lisp_Object sym, val; |
078e7b4a | 3889 | sym = intern (namestring); |
1a0f90f7 | 3890 | val = allocate_misc (); |
47e28b2c | 3891 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3892 | XINTFWD (val)->intvar = address; |
44c6c019 | 3893 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3894 | } |
3895 | ||
f0529b5b | 3896 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 3897 | nil if address contains 0. */ |
078e7b4a | 3898 | void |
e9e00ff2 | 3899 | defvar_bool (namestring, address) |
078e7b4a JB |
3900 | char *namestring; |
3901 | int *address; | |
078e7b4a | 3902 | { |
1a0f90f7 | 3903 | Lisp_Object sym, val; |
078e7b4a | 3904 | sym = intern (namestring); |
1a0f90f7 | 3905 | val = allocate_misc (); |
47e28b2c | 3906 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3907 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3908 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3909 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3910 | } |
3911 | ||
1a0f90f7 KH |
3912 | /* Similar but define a variable whose value is the Lisp Object stored |
3913 | at address. Two versions: with and without gc-marking of the C | |
3914 | variable. The nopro version is used when that variable will be | |
3915 | gc-marked for some other reason, since marking the same slot twice | |
3916 | can cause trouble with strings. */ | |
078e7b4a | 3917 | void |
1a0f90f7 | 3918 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3919 | char *namestring; |
3920 | Lisp_Object *address; | |
078e7b4a | 3921 | { |
1a0f90f7 | 3922 | Lisp_Object sym, val; |
078e7b4a | 3923 | sym = intern (namestring); |
1a0f90f7 | 3924 | val = allocate_misc (); |
47e28b2c | 3925 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3926 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3927 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3928 | } |
3929 | ||
078e7b4a | 3930 | void |
1a0f90f7 | 3931 | defvar_lisp (namestring, address) |
078e7b4a JB |
3932 | char *namestring; |
3933 | Lisp_Object *address; | |
078e7b4a | 3934 | { |
1a0f90f7 KH |
3935 | defvar_lisp_nopro (namestring, address); |
3936 | staticpro (address); | |
078e7b4a JB |
3937 | } |
3938 | ||
950c215d | 3939 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 3940 | at a particular offset in the current kboard object. */ |
950c215d KH |
3941 | |
3942 | void | |
4ac38690 | 3943 | defvar_kboard (namestring, offset) |
950c215d KH |
3944 | char *namestring; |
3945 | int offset; | |
3946 | { | |
3947 | Lisp_Object sym, val; | |
3948 | sym = intern (namestring); | |
3949 | val = allocate_misc (); | |
47e28b2c | 3950 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3951 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3952 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3953 | } |
078e7b4a | 3954 | \f |
11938f10 KH |
3955 | /* Record the value of load-path used at the start of dumping |
3956 | so we can see if the site changed it later during dumping. */ | |
3957 | static Lisp_Object dump_path; | |
3958 | ||
d5b28a9d | 3959 | void |
279499f0 | 3960 | init_lread () |
078e7b4a | 3961 | { |
46947372 | 3962 | char *normal; |
e73997a1 | 3963 | int turn_off_warning = 0; |
078e7b4a | 3964 | |
279499f0 | 3965 | /* Compute the default load-path. */ |
46947372 JB |
3966 | #ifdef CANNOT_DUMP |
3967 | normal = PATH_LOADSEARCH; | |
e065a56e | 3968 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3969 | #else |
3970 | if (NILP (Vpurify_flag)) | |
3971 | normal = PATH_LOADSEARCH; | |
279499f0 | 3972 | else |
46947372 | 3973 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3974 | |
46947372 JB |
3975 | /* In a dumped Emacs, we normally have to reset the value of |
3976 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3977 | uses ../lisp, instead of the path of the installed elisp | |
3978 | libraries. However, if it appears that Vload_path was changed | |
3979 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3980 | if (initialized) |
3981 | { | |
4746118a | 3982 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3983 | { |
3984 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3985 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3986 | { |
3ddff138 RS |
3987 | Lisp_Object tem, tem1, sitelisp; |
3988 | ||
3989 | /* Remove site-lisp dirs from path temporarily and store | |
3990 | them in sitelisp, then conc them on at the end so | |
3991 | they're always first in path. */ | |
3992 | sitelisp = Qnil; | |
3993 | while (1) | |
3994 | { | |
3995 | tem = Fcar (Vload_path); | |
3996 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3997 | tem, Qnil); | |
3998 | if (!NILP (tem1)) | |
3999 | { | |
4000 | Vload_path = Fcdr (Vload_path); | |
4001 | sitelisp = Fcons (tem, sitelisp); | |
4002 | } | |
4003 | else | |
4004 | break; | |
4005 | } | |
4006 | ||
74180aa4 | 4007 | /* Add to the path the lisp subdir of the |
3a3056e5 | 4008 | installation dir, if it exists. */ |
74180aa4 RS |
4009 | tem = Fexpand_file_name (build_string ("lisp"), |
4010 | Vinstallation_directory); | |
3a3056e5 RS |
4011 | tem1 = Ffile_exists_p (tem); |
4012 | if (!NILP (tem1)) | |
4013 | { | |
4014 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
4015 | { |
4016 | turn_off_warning = 1; | |
3ddff138 | 4017 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 4018 | } |
3a3056e5 RS |
4019 | } |
4020 | else | |
4021 | /* That dir doesn't exist, so add the build-time | |
4022 | Lisp dirs instead. */ | |
4023 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 4024 | |
9fbc0116 RS |
4025 | /* Add leim under the installation dir, if it exists. */ |
4026 | tem = Fexpand_file_name (build_string ("leim"), | |
4027 | Vinstallation_directory); | |
4028 | tem1 = Ffile_exists_p (tem); | |
4029 | if (!NILP (tem1)) | |
4030 | { | |
4031 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4032 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
4033 | } |
4034 | ||
88852d45 | 4035 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
4036 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4037 | Vinstallation_directory); | |
4038 | tem1 = Ffile_exists_p (tem); | |
4039 | if (!NILP (tem1)) | |
4040 | { | |
4041 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4042 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 4043 | } |
0f337465 RS |
4044 | |
4045 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
4046 | and it is run from where it was built, add to load-path |
4047 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
4048 | |
4049 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4050 | { | |
33046fc9 RS |
4051 | Lisp_Object tem2; |
4052 | ||
0f337465 RS |
4053 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
4054 | Vinstallation_directory); | |
4055 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
4056 | |
4057 | /* Don't be fooled if they moved the entire source tree | |
4058 | AFTER dumping Emacs. If the build directory is indeed | |
4059 | different from the source dir, src/Makefile.in and | |
4060 | src/Makefile will not be found together. */ | |
4061 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4062 | Vinstallation_directory); | |
4063 | tem2 = Ffile_exists_p (tem); | |
4064 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4065 | { |
4066 | tem = Fexpand_file_name (build_string ("lisp"), | |
4067 | Vsource_directory); | |
4068 | ||
4069 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4070 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4071 | |
9fbc0116 RS |
4072 | tem = Fexpand_file_name (build_string ("leim"), |
4073 | Vsource_directory); | |
4074 | ||
4075 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4076 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4077 | |
0f337465 RS |
4078 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4079 | Vsource_directory); | |
4080 | ||
4081 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4082 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4083 | } |
4084 | } | |
3ddff138 RS |
4085 | if (!NILP (sitelisp)) |
4086 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
4087 | } |
4088 | } | |
4746118a JB |
4089 | } |
4090 | else | |
11938f10 | 4091 | { |
7b396c6c RS |
4092 | /* NORMAL refers to the lisp dir in the source directory. */ |
4093 | /* We used to add ../lisp at the front here, but | |
4094 | that caused trouble because it was copied from dump_path | |
88852d45 | 4095 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4096 | It should be unnecessary. */ |
4097 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4098 | dump_path = Vload_path; |
4099 | } | |
46947372 | 4100 | #endif |
279499f0 | 4101 | |
536d6baa | 4102 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
4103 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4104 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4105 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 4106 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
4107 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
4108 | the "standard" paths may not exist and would be overridden by | |
4109 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
4110 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 4111 | |
078e7b4a | 4112 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4113 | if (!turn_off_warning) |
4114 | { | |
4115 | Lisp_Object path_tail; | |
078e7b4a | 4116 | |
e73997a1 RS |
4117 | for (path_tail = Vload_path; |
4118 | !NILP (path_tail); | |
c1d497be | 4119 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4120 | { |
4121 | Lisp_Object dirfile; | |
4122 | dirfile = Fcar (path_tail); | |
4123 | if (STRINGP (dirfile)) | |
4124 | { | |
4125 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 4126 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 4127 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4128 | XCAR (path_tail)); |
e73997a1 RS |
4129 | } |
4130 | } | |
4131 | } | |
536d6baa | 4132 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
4133 | |
4134 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4135 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4136 | #ifndef CANNOT_DUMP |
46947372 JB |
4137 | if (NILP (Vpurify_flag) |
4138 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4139 | #endif |
279499f0 | 4140 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4141 | |
4142 | Vvalues = Qnil; | |
4143 | ||
078e7b4a | 4144 | load_in_progress = 0; |
4e53f562 | 4145 | Vload_file_name = Qnil; |
d2c6be7f RS |
4146 | |
4147 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4148 | |
4149 | Vstandard_input = Qt; | |
f74b0705 | 4150 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4151 | } |
4152 | ||
85496b8c | 4153 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4154 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4155 | |
d5b28a9d | 4156 | void |
85496b8c RS |
4157 | dir_warning (format, dirname) |
4158 | char *format; | |
4159 | Lisp_Object dirname; | |
4160 | { | |
4161 | char *buffer | |
d5db4077 | 4162 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4163 | |
d5db4077 KR |
4164 | fprintf (stderr, format, SDATA (dirname)); |
4165 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4166 | /* Don't log the warning before we've initialized!! */ |
4167 | if (initialized) | |
4168 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4169 | } |
4170 | ||
078e7b4a | 4171 | void |
279499f0 | 4172 | syms_of_lread () |
078e7b4a JB |
4173 | { |
4174 | defsubr (&Sread); | |
4175 | defsubr (&Sread_from_string); | |
4176 | defsubr (&Sintern); | |
4177 | defsubr (&Sintern_soft); | |
d007f5c8 | 4178 | defsubr (&Sunintern); |
971a4293 | 4179 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4180 | defsubr (&Sload); |
228d4b1c | 4181 | defsubr (&Seval_buffer); |
078e7b4a JB |
4182 | defsubr (&Seval_region); |
4183 | defsubr (&Sread_char); | |
4184 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4185 | defsubr (&Sread_event); |
078e7b4a JB |
4186 | defsubr (&Sget_file_char); |
4187 | defsubr (&Smapatoms); | |
86d00812 | 4188 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
4189 | |
4190 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
4191 | doc: /* Symbol table for use by `intern' and `read'. |
4192 | It is a vector whose length ought to be prime for best results. | |
4193 | The vector's contents don't make sense if examined from Lisp programs; | |
4194 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
4195 | |
4196 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
4197 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4198 | Order is reverse chronological. */); | |
078e7b4a JB |
4199 | |
4200 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
4201 | doc: /* Stream for read to get input from. |
4202 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4203 | Vstandard_input = Qt; |
4204 | ||
abb13b09 CW |
4205 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4206 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4207 | ||
4208 | If this variable is a buffer, then only forms read from that buffer | |
4209 | will be added to `read-symbol-positions-list'. | |
4210 | If this variable is t, then all read forms will be added. | |
4211 | The effect of all other values other than nil are not currently | |
4212 | defined, although they may be in the future. | |
4213 | ||
4214 | The positions are relative to the last call to `read' or | |
4215 | `read-from-string'. It is probably a bad idea to set this variable at | |
4216 | the toplevel; bind it instead. */); | |
4217 | Vread_with_symbol_positions = Qnil; | |
4218 | ||
4219 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4220 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4221 | This variable is modified during calls to `read' or |
4222 | `read-from-string', but only when `read-with-symbol-positions' is | |
4223 | non-nil. | |
4224 | ||
4225 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4226 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4227 | symbol from the position where `read' or `read-from-string' started. |
4228 | ||
4229 | Note that a symbol will appear multiple times in this list, if it was | |
4230 | read multiple times. The list is in the same order as the symbols | |
4231 | were read in. */); | |
177c0ea7 | 4232 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4233 | |
078e7b4a | 4234 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4235 | doc: /* *List of directories to search for files to load. |
4236 | Each element is a string (directory name) or nil (try default directory). | |
4237 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4238 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4239 | |
e61b9b87 | 4240 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4241 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4242 | This list should not include the empty string. | |
4243 | `load' and related functions try to append these suffixes, in order, | |
4244 | to the specified file name if a Lisp suffix is allowed or required. */); | |
e61b9b87 SM |
4245 | Vload_suffixes = Fcons (build_string (".elc"), |
4246 | Fcons (build_string (".el"), Qnil)); | |
971a4293 LT |
4247 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4248 | doc: /* List of suffixes that indicate representations of \ | |
4249 | the same file. | |
4250 | This list should normally start with the empty string. | |
4251 | ||
4252 | Enabling Auto Compression mode appends the suffixes in | |
4253 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4254 | mode removes them again. `load' and related functions use this list to | |
4255 | determine whether they should look for compressed versions of a file | |
4256 | and, if so, which suffixes they should try to append to the file name | |
4257 | in order to do so. However, if you want to customize which suffixes | |
4258 | the loading functions recognize as compression suffixes, you should | |
4259 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4260 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4261 | |
078e7b4a | 4262 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
e0f24100 | 4263 | doc: /* Non-nil if inside of `load'. */); |
078e7b4a JB |
4264 | |
4265 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4266 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4267 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4268 | ||
4269 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4270 | a symbol \(a feature name). | |
4271 | ||
4272 | When `load' is run and the file-name argument matches an element's | |
4273 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4274 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4275 | ||
4276 | An error in FORMS does not undo the load, but does prevent execution of | |
4277 | the rest of the FORMS. */); | |
078e7b4a JB |
4278 | Vafter_load_alist = Qnil; |
4279 | ||
ae321d28 | 4280 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 4281 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
4282 | Each alist element is a list that starts with a file name, |
4283 | except for one element (optional) that starts with nil and describes | |
4284 | definitions evaluated from buffers not visiting files. | |
6bb6da3e AM |
4285 | |
4286 | The file name is absolute and is the true file name (i.e. it doesn't | |
4287 | contain symbolic links) of the loaded file. | |
4288 | ||
1bc2cdb1 | 4289 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 4290 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
191c4353 JB |
4291 | `(defun . FUNCTION)', `(autoload . SYMBOL)', `(defface . SYMBOL)' |
4292 | and `(t . SYMBOL)'. An element `(t . SYMBOL)' precedes an entry | |
4293 | `(defun . FUNCTION)', and means that SYMBOL was an autoload before | |
4294 | this file redefined it as a function. | |
0fc213e9 | 4295 | |
b502a9a1 RS |
4296 | During preloading, the file name recorded is relative to the main Lisp |
4297 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4298 | Vload_history = Qnil; |
4299 | ||
20ea2964 | 4300 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4301 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4302 | Vload_file_name = Qnil; |
4303 | ||
4116ab9f | 4304 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4305 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4306 | If the file loaded had extension `.elc', and the corresponding source file |
4307 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4308 | by functions like `custom-save-all' which edit the init file. |
4309 | While Emacs loads and evaluates the init file, value is the real name | |
4310 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4311 | Vuser_init_file = Qnil; |
4312 | ||
8a1f1537 | 4313 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4314 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4315 | Vcurrent_load_list = Qnil; |
4316 | ||
84a15045 | 4317 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4318 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4319 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4320 | Vload_read_function = Qnil; |
4321 | ||
fe0e03f3 | 4322 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4323 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4324 | This function is for doing code conversion before reading the source file. |
4325 | If nil, loading is done without any code conversion. | |
4326 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4327 | FULLNAME is the full name of FILE. | |
4328 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4329 | Vload_source_file_function = Qnil; |
4330 | ||
b2a30870 | 4331 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4332 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4333 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4334 | load_force_doc_strings = 0; |
4335 | ||
94e554db | 4336 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4337 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4338 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4339 | and is not meant for users to change. */); | |
94e554db RS |
4340 | load_convert_to_unibyte = 0; |
4341 | ||
1521a8fa | 4342 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4343 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4344 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4345 | Vsource_directory |
4346 | = Fexpand_file_name (build_string ("../"), | |
4347 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4348 | ||
4b104c41 | 4349 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4350 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4351 | Vpreloaded_file_list = Qnil; |
4352 | ||
1ffcc3b1 | 4353 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4354 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4355 | Vbyte_boolean_vars = Qnil; |
4356 | ||
da84f340 | 4357 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4358 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4359 | Some versions of XEmacs use different byte codes than Emacs. These | |
4360 | incompatible byte codes can make Emacs crash when it tries to execute | |
4361 | them. */); | |
da84f340 GM |
4362 | load_dangerous_libraries = 0; |
4363 | ||
bb970e67 | 4364 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4365 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4366 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4367 | from the file, and matches them against this regular expression. | |
4368 | When the regular expression matches, the file is considered to be safe | |
4369 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4370 | Vbytecomp_version_regexp |
f2e7d5eb | 4371 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4372 | |
3f39f996 RS |
4373 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4374 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4375 | Veval_buffer_list = Qnil; | |
4376 | ||
5aa273b0 SM |
4377 | DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes, |
4378 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); | |
4379 | Vold_style_backquotes = Qnil; | |
1d064697 SM |
4380 | Qold_style_backquotes = intern ("old-style-backquotes"); |
4381 | staticpro (&Qold_style_backquotes); | |
5aa273b0 | 4382 | |
a90ba1e2 KH |
4383 | /* Vsource_directory was initialized in init_lread. */ |
4384 | ||
d2c6be7f RS |
4385 | load_descriptor_list = Qnil; |
4386 | staticpro (&load_descriptor_list); | |
4387 | ||
8a1f1537 RS |
4388 | Qcurrent_load_list = intern ("current-load-list"); |
4389 | staticpro (&Qcurrent_load_list); | |
4390 | ||
078e7b4a JB |
4391 | Qstandard_input = intern ("standard-input"); |
4392 | staticpro (&Qstandard_input); | |
4393 | ||
4394 | Qread_char = intern ("read-char"); | |
4395 | staticpro (&Qread_char); | |
4396 | ||
4397 | Qget_file_char = intern ("get-file-char"); | |
4398 | staticpro (&Qget_file_char); | |
7bd279cd | 4399 | |
8792be66 KH |
4400 | Qget_emacs_mule_file_char = intern ("get-emacs-mule-file-char"); |
4401 | staticpro (&Qget_emacs_mule_file_char); | |
4402 | ||
4403 | Qload_force_doc_strings = intern ("load-force-doc-strings"); | |
4404 | staticpro (&Qload_force_doc_strings); | |
4405 | ||
17634846 RS |
4406 | Qbackquote = intern ("`"); |
4407 | staticpro (&Qbackquote); | |
4408 | Qcomma = intern (","); | |
4409 | staticpro (&Qcomma); | |
4410 | Qcomma_at = intern (",@"); | |
4411 | staticpro (&Qcomma_at); | |
4412 | Qcomma_dot = intern (",."); | |
4413 | staticpro (&Qcomma_dot); | |
4414 | ||
74549846 RS |
4415 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4416 | staticpro (&Qinhibit_file_name_operation); | |
4417 | ||
7bd279cd RS |
4418 | Qascii_character = intern ("ascii-character"); |
4419 | staticpro (&Qascii_character); | |
c2225d00 | 4420 | |
2b6cae0c RS |
4421 | Qfunction = intern ("function"); |
4422 | staticpro (&Qfunction); | |
4423 | ||
c2225d00 RS |
4424 | Qload = intern ("load"); |
4425 | staticpro (&Qload); | |
20ea2964 RS |
4426 | |
4427 | Qload_file_name = intern ("load-file-name"); | |
4428 | staticpro (&Qload_file_name); | |
11938f10 | 4429 | |
3f39f996 RS |
4430 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4431 | staticpro (&Qeval_buffer_list); | |
4432 | ||
6bb6da3e AM |
4433 | Qfile_truename = intern ("file-truename"); |
4434 | staticpro (&Qfile_truename) ; | |
4435 | ||
4436 | Qdo_after_load_evaluation = intern ("do-after-load-evaluation"); | |
4437 | staticpro (&Qdo_after_load_evaluation) ; | |
4438 | ||
11938f10 | 4439 | staticpro (&dump_path); |
4ad679f9 EN |
4440 | |
4441 | staticpro (&read_objects); | |
4442 | read_objects = Qnil; | |
9e062b6c | 4443 | staticpro (&seen_list); |
f153db13 | 4444 | seen_list = Qnil; |
177c0ea7 | 4445 | |
7ee3bd7b GM |
4446 | Vloads_in_progress = Qnil; |
4447 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4448 | } |
6b61353c KH |
4449 | |
4450 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4451 | (do not change this comment) */ |