Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
0b5538bd TTN |
2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
114f9c96 | 4 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
078e7b4a | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
078e7b4a JB |
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 | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
078e7b4a JB |
20 | |
21 | ||
98280b76 | 22 | #include <config.h> |
078e7b4a JB |
23 | #include <stdio.h> |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <sys/file.h> | |
2c1b5dbe | 27 | #include <errno.h> |
b3e6f69c | 28 | #include <setjmp.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
078e7b4a | 31 | #include "buffer.h" |
1571601b | 32 | #include "character.h" |
fe0e03f3 | 33 | #include "charset.h" |
8792be66 | 34 | #include "coding.h" |
57bda87a | 35 | #include <epaths.h> |
078e7b4a | 36 | #include "commands.h" |
e37c0805 | 37 | #include "keyboard.h" |
428a555e | 38 | #include "frame.h" |
7bd279cd | 39 | #include "termhooks.h" |
eb191db2 | 40 | #include "coding.h" |
66cd0949 | 41 | #include "blockinput.h" |
078e7b4a | 42 | |
79051982 | 43 | #ifdef MSDOS |
79051982 RS |
44 | #include "msdos.h" |
45 | #endif | |
46 | ||
c1a2f60a AS |
47 | #ifdef HAVE_UNISTD_H |
48 | #include <unistd.h> | |
49 | #endif | |
50 | ||
078e7b4a | 51 | #include <math.h> |
078e7b4a | 52 | |
c011e9a5 RS |
53 | #ifdef HAVE_SETLOCALE |
54 | #include <locale.h> | |
55 | #endif /* HAVE_SETLOCALE */ | |
56 | ||
bcdec28b DL |
57 | #ifdef HAVE_FCNTL_H |
58 | #include <fcntl.h> | |
59 | #endif | |
f7d279f0 RS |
60 | #ifndef O_RDONLY |
61 | #define O_RDONLY 0 | |
62 | #endif | |
63 | ||
79cf851c | 64 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
65 | #define file_offset off_t |
66 | #define file_tell ftello | |
67 | #else | |
68 | #define file_offset long | |
69 | #define file_tell ftell | |
70 | #endif | |
71 | ||
f19a0f5b TZ |
72 | /* hash table read constants */ |
73 | Lisp_Object Qhash_table, Qdata; | |
74 | Lisp_Object Qtest, Qsize; | |
75 | Lisp_Object Qweakness; | |
76 | Lisp_Object Qrehash_size; | |
77 | Lisp_Object Qrehash_threshold; | |
78 | extern Lisp_Object QCtest, QCsize, QCrehash_size, QCrehash_threshold, QCweakness; | |
79 | ||
8a1f1537 | 80 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 81 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 82 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 83 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 84 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 85 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
b9598260 | 86 | Lisp_Object Qlexical_binding; |
6bb6da3e | 87 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 88 | |
8792be66 KH |
89 | /* Used instead of Qget_file_char while loading *.elc files compiled |
90 | by Emacs 21 or older. */ | |
91 | static Lisp_Object Qget_emacs_mule_file_char; | |
92 | ||
93 | static Lisp_Object Qload_force_doc_strings; | |
94 | ||
7bd279cd | 95 | extern Lisp_Object Qevent_symbol_element_mask; |
74549846 | 96 | extern Lisp_Object Qfile_exists_p; |
b9598260 | 97 | extern Lisp_Object Qinternal_interpreter_environment; |
078e7b4a | 98 | |
e0f24100 | 99 | /* non-zero if inside `load' */ |
078e7b4a | 100 | int load_in_progress; |
2baf5e76 | 101 | static Lisp_Object Qload_in_progress; |
ece435a5 | 102 | |
1521a8fa RS |
103 | /* Directory in which the sources were found. */ |
104 | Lisp_Object Vsource_directory; | |
105 | ||
e61b9b87 | 106 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 107 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 108 | |
4116ab9f KH |
109 | /* File name of user's init file. */ |
110 | Lisp_Object Vuser_init_file; | |
111 | ||
ae321d28 RS |
112 | /* This is the user-visible association list that maps features to |
113 | lists of defs in their load files. */ | |
114 | Lisp_Object Vload_history; | |
115 | ||
20ea2964 | 116 | /* This is used to build the load history. */ |
ae321d28 RS |
117 | Lisp_Object Vcurrent_load_list; |
118 | ||
4b104c41 RS |
119 | /* List of files that were preloaded. */ |
120 | Lisp_Object Vpreloaded_file_list; | |
121 | ||
20ea2964 RS |
122 | /* Name of file actually being read by `load'. */ |
123 | Lisp_Object Vload_file_name; | |
124 | ||
84a15045 RS |
125 | /* Function to use for reading, in `load' and friends. */ |
126 | Lisp_Object Vload_read_function; | |
127 | ||
91f68422 CY |
128 | /* Non-nil means read recursive structures using #n= and #n# syntax. */ |
129 | Lisp_Object Vread_circle; | |
130 | ||
4ad679f9 EN |
131 | /* The association list of objects read with the #n=object form. |
132 | Each member of the list has the form (n . object), and is used to | |
133 | look up the object for the corresponding #n# construct. | |
134 | It must be set to nil before all top-level calls to read0. */ | |
135 | Lisp_Object read_objects; | |
136 | ||
b2a30870 RS |
137 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
138 | static int load_force_doc_strings; | |
139 | ||
94e554db RS |
140 | /* Nonzero means read should convert strings to unibyte. */ |
141 | static int load_convert_to_unibyte; | |
142 | ||
8792be66 KH |
143 | /* Nonzero means READCHAR should read bytes one by one (not character) |
144 | when READCHARFUN is Qget_file_char or Qget_emacs_mule_file_char. | |
145 | This is set to 1 by read1 temporarily while handling #@NUMBER. */ | |
146 | static int load_each_byte; | |
147 | ||
9b33a603 | 148 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
149 | compiled) instead of readevalloop. */ |
150 | Lisp_Object Vload_source_file_function; | |
151 | ||
1ffcc3b1 DL |
152 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
153 | Lisp_Object Vbyte_boolean_vars; | |
154 | ||
abb13b09 CW |
155 | /* Whether or not to add a `read-positions' property to symbols |
156 | read. */ | |
157 | Lisp_Object Vread_with_symbol_positions; | |
158 | ||
159 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
160 | Lisp_Object Vread_symbol_positions_list; | |
161 | ||
b9598260 SM |
162 | /* If non-nil `readevalloop' evaluates code in a lexical environment. */ |
163 | Lisp_Object Vlexical_binding; | |
164 | ||
d2c6be7f RS |
165 | /* List of descriptors now open for Fload. */ |
166 | static Lisp_Object load_descriptor_list; | |
167 | ||
b2a30870 | 168 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
169 | static FILE *instream; |
170 | ||
171 | /* When nonzero, read conses in pure space */ | |
172 | static int read_pure; | |
173 | ||
b2a30870 | 174 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 175 | static int read_from_string_index; |
bed23cb2 | 176 | static int read_from_string_index_byte; |
078e7b4a | 177 | static int read_from_string_limit; |
17634846 | 178 | |
abb13b09 CW |
179 | /* Number of characters read in the current call to Fread or |
180 | Fread_from_string. */ | |
181 | static int readchar_count; | |
6f7f43d5 | 182 | |
c15cfd1f | 183 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
184 | static char *saved_doc_string; |
185 | /* Length of buffer allocated in saved_doc_string. */ | |
186 | static int saved_doc_string_size; | |
187 | /* Length of actual data in saved_doc_string. */ | |
188 | static int saved_doc_string_length; | |
189 | /* This is the file position that string came from. */ | |
68c45bf0 | 190 | static file_offset saved_doc_string_position; |
b2a30870 | 191 | |
c15cfd1f RS |
192 | /* This contains the previous string skipped with #@. |
193 | We copy it from saved_doc_string when a new string | |
194 | is put in saved_doc_string. */ | |
195 | static char *prev_saved_doc_string; | |
196 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
197 | static int prev_saved_doc_string_size; | |
198 | /* Length of actual data in prev_saved_doc_string. */ | |
199 | static int prev_saved_doc_string_length; | |
200 | /* This is the file position that string came from. */ | |
68c45bf0 | 201 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 202 | |
17634846 RS |
203 | /* Nonzero means inside a new-style backquote |
204 | with no surrounding parentheses. | |
205 | Fread initializes this to zero, so we need not specbind it | |
206 | or worry about what happens to it when there is an error. */ | |
207 | static int new_backquote_flag; | |
1d064697 | 208 | static Lisp_Object Vold_style_backquotes, Qold_style_backquotes; |
7ee3bd7b GM |
209 | |
210 | /* A list of file names for files being loaded in Fload. Used to | |
211 | check for recursive loads. */ | |
212 | ||
9942fa0c | 213 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 214 | |
550a625e GM |
215 | /* Non-zero means load dangerous compiled Lisp files. */ |
216 | ||
217 | int load_dangerous_libraries; | |
218 | ||
beb0b7f9 EZ |
219 | /* Non-zero means force printing messages when loading Lisp files. */ |
220 | ||
221 | int force_load_messages; | |
222 | ||
550a625e GM |
223 | /* A regular expression used to detect files compiled with Emacs. */ |
224 | ||
225 | static Lisp_Object Vbytecomp_version_regexp; | |
226 | ||
f57e2426 J |
227 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
228 | Lisp_Object); | |
8792be66 | 229 | |
f57e2426 | 230 | static void readevalloop (Lisp_Object, FILE*, Lisp_Object, |
dd4c5104 | 231 | Lisp_Object (*) (Lisp_Object), int, |
f57e2426 J |
232 | Lisp_Object, Lisp_Object, |
233 | Lisp_Object, Lisp_Object); | |
234 | static Lisp_Object load_unwind (Lisp_Object); | |
235 | static Lisp_Object load_descriptor_unwind (Lisp_Object); | |
550a625e | 236 | |
f57e2426 | 237 | static void invalid_syntax (const char *, int) NO_RETURN; |
971de7fb | 238 | static void end_of_file_error (void) NO_RETURN; |
336d4a9c | 239 | |
078e7b4a | 240 | \f |
8792be66 KH |
241 | /* Functions that read one byte from the current source READCHARFUN |
242 | or unreads one byte. If the integer argument C is -1, it returns | |
243 | one read byte, or -1 when there's no more byte in the source. If C | |
244 | is 0 or positive, it unreads C, and the return value is not | |
245 | interesting. */ | |
246 | ||
f57e2426 J |
247 | static int readbyte_for_lambda (int, Lisp_Object); |
248 | static int readbyte_from_file (int, Lisp_Object); | |
249 | static int readbyte_from_string (int, Lisp_Object); | |
8792be66 | 250 | |
078e7b4a JB |
251 | /* Handle unreading and rereading of characters. |
252 | Write READCHAR to read a character, | |
fe0e03f3 KH |
253 | UNREAD(c) to unread c to be read again. |
254 | ||
8792be66 | 255 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 256 | |
1202434b | 257 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
258 | #define UNREAD(c) unreadchar (readcharfun, c) |
259 | ||
1202434b KH |
260 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
261 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
262 | ||
8792be66 | 263 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
264 | Qlambda, or a cons, we use this to keep an unread character because |
265 | a file stream can't handle multibyte-char unreading. The value -1 | |
8792be66 KH |
266 | means that there's no unread character. */ |
267 | static int unread_char; | |
268 | ||
078e7b4a | 269 | static int |
971de7fb | 270 | readchar (Lisp_Object readcharfun, int *multibyte) |
078e7b4a JB |
271 | { |
272 | Lisp_Object tem; | |
95384e1e | 273 | register int c; |
f57e2426 | 274 | int (*readbyte) (int, Lisp_Object); |
8792be66 KH |
275 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; |
276 | int i, len; | |
277 | int emacs_mule_encoding = 0; | |
078e7b4a | 278 | |
1202434b KH |
279 | if (multibyte) |
280 | *multibyte = 0; | |
281 | ||
abb13b09 | 282 | readchar_count++; |
177c0ea7 | 283 | |
cfff016d | 284 | if (BUFFERP (readcharfun)) |
078e7b4a | 285 | { |
bed23cb2 | 286 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 287 | |
bed23cb2 | 288 | int pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 289 | |
bed23cb2 RS |
290 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
291 | return -1; | |
078e7b4a | 292 | |
bed23cb2 RS |
293 | if (! NILP (inbuffer->enable_multibyte_characters)) |
294 | { | |
00a9a935 | 295 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
296 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
297 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 298 | c = STRING_CHAR (p); |
1202434b KH |
299 | if (multibyte) |
300 | *multibyte = 1; | |
bed23cb2 RS |
301 | } |
302 | else | |
303 | { | |
304 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
305 | if (! ASCII_BYTE_P (c)) |
306 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 307 | pt_byte++; |
6f7f43d5 | 308 | } |
bed23cb2 | 309 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 310 | |
bed23cb2 | 311 | return c; |
078e7b4a | 312 | } |
cfff016d | 313 | if (MARKERP (readcharfun)) |
078e7b4a | 314 | { |
bed23cb2 | 315 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 316 | |
bed23cb2 | 317 | int bytepos = marker_byte_position (readcharfun); |
00a9a935 | 318 | |
bed23cb2 RS |
319 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
320 | return -1; | |
6f7f43d5 | 321 | |
bed23cb2 RS |
322 | if (! NILP (inbuffer->enable_multibyte_characters)) |
323 | { | |
00a9a935 | 324 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
325 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
326 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 327 | c = STRING_CHAR (p); |
1202434b KH |
328 | if (multibyte) |
329 | *multibyte = 1; | |
bed23cb2 RS |
330 | } |
331 | else | |
332 | { | |
333 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
334 | if (! ASCII_BYTE_P (c)) |
335 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 336 | bytepos++; |
6f7f43d5 RS |
337 | } |
338 | ||
bed23cb2 RS |
339 | XMARKER (readcharfun)->bytepos = bytepos; |
340 | XMARKER (readcharfun)->charpos++; | |
341 | ||
342 | return c; | |
078e7b4a | 343 | } |
ad0153e4 RS |
344 | |
345 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
346 | { |
347 | readbyte = readbyte_for_lambda; | |
348 | goto read_multibyte; | |
349 | } | |
ad0153e4 | 350 | |
078e7b4a | 351 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 352 | { |
8792be66 KH |
353 | readbyte = readbyte_from_file; |
354 | goto read_multibyte; | |
2c1b5dbe | 355 | } |
078e7b4a | 356 | |
cfff016d | 357 | if (STRINGP (readcharfun)) |
078e7b4a | 358 | { |
bed23cb2 | 359 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 360 | c = -1; |
1202434b KH |
361 | else if (STRING_MULTIBYTE (readcharfun)) |
362 | { | |
363 | if (multibyte) | |
364 | *multibyte = 1; | |
365 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
366 | read_from_string_index, | |
367 | read_from_string_index_byte); | |
368 | } | |
f0354c03 | 369 | else |
1202434b KH |
370 | { |
371 | c = SREF (readcharfun, read_from_string_index_byte); | |
372 | read_from_string_index++; | |
373 | read_from_string_index_byte++; | |
374 | } | |
078e7b4a JB |
375 | return c; |
376 | } | |
377 | ||
8792be66 KH |
378 | if (CONSP (readcharfun)) |
379 | { | |
380 | /* This is the case that read_vector is reading from a unibyte | |
381 | string that contains a byte sequence previously skipped | |
382 | because of #@NUMBER. The car part of readcharfun is that | |
383 | string, and the cdr part is a value of readcharfun given to | |
384 | read_vector. */ | |
385 | readbyte = readbyte_from_string; | |
386 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
387 | emacs_mule_encoding = 1; | |
388 | goto read_multibyte; | |
389 | } | |
8f924df7 | 390 | |
8792be66 KH |
391 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
392 | { | |
393 | readbyte = readbyte_from_file; | |
394 | emacs_mule_encoding = 1; | |
395 | goto read_multibyte; | |
396 | } | |
078e7b4a JB |
397 | |
398 | tem = call0 (readcharfun); | |
399 | ||
265a9e55 | 400 | if (NILP (tem)) |
078e7b4a JB |
401 | return -1; |
402 | return XINT (tem); | |
8792be66 KH |
403 | |
404 | read_multibyte: | |
405 | if (unread_char >= 0) | |
406 | { | |
407 | c = unread_char; | |
408 | unread_char = -1; | |
409 | return c; | |
410 | } | |
411 | c = (*readbyte) (-1, readcharfun); | |
1202434b KH |
412 | if (c < 0 || load_each_byte) |
413 | return c; | |
414 | if (multibyte) | |
415 | *multibyte = 1; | |
416 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
417 | return c; |
418 | if (emacs_mule_encoding) | |
419 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
420 | i = 0; | |
421 | buf[i++] = c; | |
422 | len = BYTES_BY_CHAR_HEAD (c); | |
423 | while (i < len) | |
424 | { | |
425 | c = (*readbyte) (-1, readcharfun); | |
426 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
427 | { | |
428 | while (--i > 1) | |
429 | (*readbyte) (buf[i], readcharfun); | |
430 | return BYTE8_TO_CHAR (buf[0]); | |
431 | } | |
432 | buf[i++] = c; | |
433 | } | |
62a6e103 | 434 | return STRING_CHAR (buf); |
078e7b4a JB |
435 | } |
436 | ||
437 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
438 | If the stream is a user function, call it with the char as argument. */ | |
439 | ||
440 | static void | |
971de7fb | 441 | unreadchar (Lisp_Object readcharfun, int c) |
078e7b4a | 442 | { |
abb13b09 | 443 | readchar_count--; |
92fddec9 KH |
444 | if (c == -1) |
445 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
446 | since readchar didn't advance it when we read it. */ | |
447 | ; | |
cfff016d | 448 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 449 | { |
bed23cb2 RS |
450 | struct buffer *b = XBUFFER (readcharfun); |
451 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 452 | |
8792be66 KH |
453 | BUF_PT (b)--; |
454 | if (! NILP (b->enable_multibyte_characters)) | |
455 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 456 | else |
8792be66 | 457 | bytepos--; |
d7760ca9 | 458 | |
8792be66 | 459 | BUF_PT_BYTE (b) = bytepos; |
d7760ca9 | 460 | } |
cfff016d | 461 | else if (MARKERP (readcharfun)) |
d7760ca9 | 462 | { |
bed23cb2 RS |
463 | struct buffer *b = XMARKER (readcharfun)->buffer; |
464 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 465 | |
8792be66 KH |
466 | XMARKER (readcharfun)->charpos--; |
467 | if (! NILP (b->enable_multibyte_characters)) | |
468 | BUF_DEC_POS (b, bytepos); | |
bed23cb2 | 469 | else |
8792be66 | 470 | bytepos--; |
d7760ca9 | 471 | |
8792be66 | 472 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 473 | } |
cfff016d | 474 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
475 | { |
476 | read_from_string_index--; | |
477 | read_from_string_index_byte | |
478 | = string_char_to_byte (readcharfun, read_from_string_index); | |
479 | } | |
8792be66 KH |
480 | else if (CONSP (readcharfun)) |
481 | { | |
482 | unread_char = c; | |
483 | } | |
ad0153e4 | 484 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
485 | { |
486 | unread_char = c; | |
487 | } | |
488 | else if (EQ (readcharfun, Qget_file_char) | |
489 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
490 | { | |
491 | if (load_each_byte) | |
d85d3839 MB |
492 | { |
493 | BLOCK_INPUT; | |
494 | ungetc (c, instream); | |
495 | UNBLOCK_INPUT; | |
496 | } | |
8792be66 KH |
497 | else |
498 | unread_char = c; | |
499 | } | |
078e7b4a JB |
500 | else |
501 | call1 (readcharfun, make_number (c)); | |
502 | } | |
503 | ||
8792be66 | 504 | static int |
971de7fb | 505 | readbyte_for_lambda (int c, Lisp_Object readcharfun) |
8792be66 KH |
506 | { |
507 | return read_bytecode_char (c >= 0); | |
508 | } | |
509 | ||
510 | ||
511 | static int | |
971de7fb | 512 | readbyte_from_file (int c, Lisp_Object readcharfun) |
8792be66 KH |
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 | |
971de7fb | 543 | readbyte_from_string (int c, Lisp_Object readcharfun) |
8792be66 KH |
544 | { |
545 | Lisp_Object string = XCAR (readcharfun); | |
546 | ||
547 | if (c >= 0) | |
548 | { | |
549 | read_from_string_index--; | |
550 | read_from_string_index_byte | |
551 | = string_char_to_byte (string, read_from_string_index); | |
552 | } | |
8f924df7 | 553 | |
8792be66 KH |
554 | if (read_from_string_index >= read_from_string_limit) |
555 | c = -1; | |
556 | else | |
557 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
558 | read_from_string_index, | |
559 | read_from_string_index_byte); | |
560 | return c; | |
561 | } | |
562 | ||
563 | ||
564 | /* Read one non-ASCII character from INSTREAM. The character is | |
565 | encoded in `emacs-mule' and the first byte is already read in | |
566 | C. */ | |
567 | ||
568 | extern char emacs_mule_bytes[256]; | |
569 | ||
570 | static int | |
971de7fb | 571 | read_emacs_mule_char (int c, int (*readbyte) (int, Lisp_Object), Lisp_Object readcharfun) |
8792be66 KH |
572 | { |
573 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
574 | unsigned char buf[4]; | |
575 | int len = emacs_mule_bytes[c]; | |
576 | struct charset *charset; | |
577 | int i; | |
578 | unsigned code; | |
579 | ||
580 | if (len == 1) | |
581 | /* C is not a valid leading-code of `emacs-mule'. */ | |
582 | return BYTE8_TO_CHAR (c); | |
583 | ||
584 | i = 0; | |
585 | buf[i++] = c; | |
586 | while (i < len) | |
587 | { | |
588 | c = (*readbyte) (-1, readcharfun); | |
589 | if (c < 0xA0) | |
590 | { | |
591 | while (--i > 1) | |
592 | (*readbyte) (buf[i], readcharfun); | |
593 | return BYTE8_TO_CHAR (buf[0]); | |
594 | } | |
595 | buf[i++] = c; | |
596 | } | |
597 | ||
598 | if (len == 2) | |
599 | { | |
da6b532c | 600 | charset = emacs_mule_charset[buf[0]]; |
8792be66 KH |
601 | code = buf[1] & 0x7F; |
602 | } | |
603 | else if (len == 3) | |
604 | { | |
605 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
606 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
607 | { | |
608 | charset = emacs_mule_charset[buf[1]]; | |
609 | code = buf[2] & 0x7F; | |
610 | } | |
611 | else | |
612 | { | |
613 | charset = emacs_mule_charset[buf[0]]; | |
614 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; | |
615 | } | |
616 | } | |
617 | else | |
618 | { | |
619 | charset = emacs_mule_charset[buf[1]]; | |
8f924df7 | 620 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
621 | } |
622 | c = DECODE_CHAR (charset, code); | |
623 | if (c < 0) | |
624 | Fsignal (Qinvalid_read_syntax, | |
625 | Fcons (build_string ("invalid multibyte form"), Qnil)); | |
626 | return c; | |
627 | } | |
628 | ||
629 | ||
f57e2426 J |
630 | static Lisp_Object read_internal_start (Lisp_Object, Lisp_Object, |
631 | Lisp_Object); | |
632 | static Lisp_Object read0 (Lisp_Object); | |
633 | static Lisp_Object read1 (Lisp_Object, int *, int); | |
abb13b09 | 634 | |
f57e2426 J |
635 | static Lisp_Object read_list (int, Lisp_Object); |
636 | static Lisp_Object read_vector (Lisp_Object, int); | |
abb13b09 | 637 | |
f57e2426 J |
638 | static Lisp_Object substitute_object_recurse (Lisp_Object, Lisp_Object, |
639 | Lisp_Object); | |
640 | static void substitute_object_in_subtree (Lisp_Object, | |
641 | Lisp_Object); | |
642 | static void substitute_in_interval (INTERVAL, Lisp_Object); | |
9e062b6c | 643 | |
078e7b4a | 644 | \f |
bed23cb2 | 645 | /* Get a character from the tty. */ |
078e7b4a | 646 | |
f42be754 JB |
647 | /* Read input events until we get one that's acceptable for our purposes. |
648 | ||
649 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
650 | until we get a character we like, and then stuffed into | |
651 | unread_switch_frame. | |
652 | ||
653 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
654 | if the unmodified version of the symbol has a Qascii_character | |
655 | property, and use that character, if present. | |
656 | ||
657 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
658 | get isn't an ASCII character with modifiers. If it's zero but | |
659 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
660 | character. |
661 | ||
662 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
663 | if the character warrants that. |
664 | ||
665 | If SECONDS is a number, we wait that many seconds for input, and | |
666 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 667 | |
f42be754 | 668 | Lisp_Object |
d5a3eaaf AS |
669 | read_filtered_event (int no_switch_frame, int ascii_required, |
670 | int error_nonascii, int input_method, Lisp_Object seconds) | |
f42be754 | 671 | { |
4332cf50 | 672 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 673 | EMACS_TIME end_time; |
153a17b7 | 674 | |
5dbf89bc | 675 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
676 | if (display_hourglass_p) |
677 | cancel_hourglass (); | |
5dbf89bc | 678 | #endif |
177c0ea7 | 679 | |
153a17b7 | 680 | delayed_switch_frame = Qnil; |
f42be754 | 681 | |
50e48299 CY |
682 | /* Compute timeout. */ |
683 | if (NUMBERP (seconds)) | |
684 | { | |
685 | EMACS_TIME wait_time; | |
686 | int sec, usec; | |
51d8b30e | 687 | double duration = extract_float (seconds); |
50e48299 CY |
688 | |
689 | sec = (int) duration; | |
690 | usec = (duration - sec) * 1000000; | |
691 | EMACS_GET_TIME (end_time); | |
692 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
693 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
694 | } | |
695 | ||
251bc578 | 696 | /* Read until we get an acceptable event. */ |
f42be754 | 697 | retry: |
88852d45 | 698 | do |
251bc578 KL |
699 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
700 | NUMBERP (seconds) ? &end_time : NULL); | |
9688ff53 | 701 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 702 | |
cfff016d | 703 | if (BUFFERP (val)) |
6c82d689 KH |
704 | goto retry; |
705 | ||
f42be754 | 706 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 707 | character. This is better than signaling an error just because |
f42be754 JB |
708 | the last characters were typed to a separate minibuffer frame, |
709 | for example. Eventually, some code which can deal with | |
710 | switch-frame events will read it and process it. */ | |
711 | if (no_switch_frame | |
712 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 713 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
714 | { |
715 | delayed_switch_frame = val; | |
716 | goto retry; | |
717 | } | |
718 | ||
50e48299 | 719 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
720 | { |
721 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 722 | if (SYMBOLP (val)) |
f42be754 | 723 | { |
95384e1e | 724 | Lisp_Object tem, tem1; |
f42be754 JB |
725 | tem = Fget (val, Qevent_symbol_element_mask); |
726 | if (!NILP (tem)) | |
727 | { | |
728 | tem1 = Fget (Fcar (tem), Qascii_character); | |
729 | /* Merge this symbol's modifier bits | |
730 | with the ASCII equivalent of its basic code. */ | |
731 | if (!NILP (tem1)) | |
baf69866 | 732 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
733 | } |
734 | } | |
177c0ea7 | 735 | |
f42be754 | 736 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 737 | if (!INTEGERP (val)) |
f42be754 JB |
738 | { |
739 | if (error_nonascii) | |
740 | { | |
1ec84625 | 741 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
742 | error ("Non-character input-event"); |
743 | } | |
744 | else | |
745 | goto retry; | |
746 | } | |
747 | } | |
748 | ||
749 | if (! NILP (delayed_switch_frame)) | |
750 | unread_switch_frame = delayed_switch_frame; | |
751 | ||
67868d27 PJ |
752 | #if 0 |
753 | ||
5dbf89bc | 754 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
755 | if (display_hourglass_p) |
756 | start_hourglass (); | |
5dbf89bc | 757 | #endif |
67868d27 PJ |
758 | |
759 | #endif | |
760 | ||
f42be754 | 761 | return val; |
f42be754 JB |
762 | } |
763 | ||
50e48299 | 764 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
765 | doc: /* Read a character from the command input (keyboard or macro). |
766 | It is returned as a number. | |
fb26c2af KH |
767 | If the character has modifiers, they are resolved and reflected to the |
768 | character code if possible (e.g. C-SPC -> 0). | |
769 | ||
5de38842 PJ |
770 | If the user generates an event which is not a character (i.e. a mouse |
771 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
772 | exception, switch-frame events are put off until non-character events |
773 | can be read. | |
5de38842 PJ |
774 | If you want to read non-character events, or ignore them, call |
775 | `read-event' or `read-char-exclusive' instead. | |
776 | ||
777 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
778 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
779 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
780 | is used for reading a character. |
781 | If the optional argument SECONDS is non-nil, it should be a number | |
782 | specifying the maximum number of seconds to wait for input. If no | |
783 | input arrives in that time, return nil. SECONDS may be a | |
784 | floating-point value. */) | |
5842a27b | 785 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 786 | { |
fb26c2af | 787 | Lisp_Object val; |
fb26c2af | 788 | |
bb49a192 RS |
789 | if (! NILP (prompt)) |
790 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 791 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
792 | |
793 | return (NILP (val) ? Qnil | |
794 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
795 | } |
796 | ||
50e48299 | 797 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
798 | doc: /* Read an event object from the input stream. |
799 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
800 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
801 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
802 | is used for reading a character. |
803 | If the optional argument SECONDS is non-nil, it should be a number | |
804 | specifying the maximum number of seconds to wait for input. If no | |
805 | input arrives in that time, return nil. SECONDS may be a | |
806 | floating-point value. */) | |
5842a27b | 807 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 808 | { |
bb49a192 RS |
809 | if (! NILP (prompt)) |
810 | message_with_string ("%s", prompt, 0); | |
50e48299 | 811 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
812 | } |
813 | ||
50e48299 | 814 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
815 | doc: /* Read a character from the command input (keyboard or macro). |
816 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
817 | If the character has modifiers, they are resolved and reflected to the |
818 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
819 | |
820 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
821 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
822 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
823 | is used for reading a character. |
824 | If the optional argument SECONDS is non-nil, it should be a number | |
825 | specifying the maximum number of seconds to wait for input. If no | |
826 | input arrives in that time, return nil. SECONDS may be a | |
827 | floating-point value. */) | |
5842a27b | 828 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 829 | { |
fb26c2af | 830 | Lisp_Object val; |
fb26c2af | 831 | |
bb49a192 RS |
832 | if (! NILP (prompt)) |
833 | message_with_string ("%s", prompt, 0); | |
66c410ce | 834 | |
fb26c2af | 835 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
836 | |
837 | return (NILP (val) ? Qnil | |
838 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 839 | } |
078e7b4a JB |
840 | |
841 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 | 842 | doc: /* Don't use this yourself. */) |
5842a27b | 843 | (void) |
078e7b4a JB |
844 | { |
845 | register Lisp_Object val; | |
66cd0949 | 846 | BLOCK_INPUT; |
1805de4f | 847 | XSETINT (val, getc (instream)); |
66cd0949 | 848 | UNBLOCK_INPUT; |
078e7b4a JB |
849 | return val; |
850 | } | |
da84f340 GM |
851 | |
852 | ||
550a625e | 853 | \f |
b9598260 SM |
854 | |
855 | /* Return true if the lisp code read using READCHARFUN defines a non-nil | |
856 | `lexical-binding' file variable. After returning, the stream is | |
857 | positioned following the first line, if it is a comment, otherwise | |
858 | nothing is read. */ | |
859 | ||
860 | static int | |
861 | lisp_file_lexically_bound_p (readcharfun) | |
862 | Lisp_Object readcharfun; | |
863 | { | |
864 | int ch = READCHAR; | |
865 | if (ch != ';') | |
866 | /* The first line isn't a comment, just give up. */ | |
867 | { | |
868 | UNREAD (ch); | |
869 | return 0; | |
870 | } | |
871 | else | |
872 | /* Look for an appropriate file-variable in the first line. */ | |
873 | { | |
874 | int rv = 0; | |
875 | enum { | |
876 | NOMINAL, AFTER_FIRST_DASH, AFTER_ASTERIX, | |
877 | } beg_end_state = NOMINAL; | |
878 | int in_file_vars = 0; | |
879 | ||
880 | #define UPDATE_BEG_END_STATE(ch) \ | |
881 | if (beg_end_state == NOMINAL) \ | |
882 | beg_end_state = (ch == '-' ? AFTER_FIRST_DASH : NOMINAL); \ | |
883 | else if (beg_end_state == AFTER_FIRST_DASH) \ | |
884 | beg_end_state = (ch == '*' ? AFTER_ASTERIX : NOMINAL); \ | |
885 | else if (beg_end_state == AFTER_ASTERIX) \ | |
886 | { \ | |
887 | if (ch == '-') \ | |
888 | in_file_vars = !in_file_vars; \ | |
889 | beg_end_state = NOMINAL; \ | |
890 | } | |
891 | ||
892 | /* Skip until we get to the file vars, if any. */ | |
893 | do | |
894 | { | |
895 | ch = READCHAR; | |
896 | UPDATE_BEG_END_STATE (ch); | |
897 | } | |
898 | while (!in_file_vars && ch != '\n' && ch != EOF); | |
899 | ||
900 | while (in_file_vars) | |
901 | { | |
902 | char var[100], *var_end, val[100], *val_end; | |
903 | ||
904 | ch = READCHAR; | |
905 | ||
906 | /* Read a variable name. */ | |
907 | while (ch == ' ' || ch == '\t') | |
908 | ch = READCHAR; | |
909 | ||
910 | var_end = var; | |
911 | while (ch != ':' && ch != '\n' && ch != EOF) | |
912 | { | |
913 | if (var_end < var + sizeof var - 1) | |
914 | *var_end++ = ch; | |
915 | UPDATE_BEG_END_STATE (ch); | |
916 | ch = READCHAR; | |
917 | } | |
918 | ||
919 | while (var_end > var | |
920 | && (var_end[-1] == ' ' || var_end[-1] == '\t')) | |
921 | var_end--; | |
922 | *var_end = '\0'; | |
923 | ||
924 | if (ch == ':') | |
925 | { | |
926 | /* Read a variable value. */ | |
927 | ch = READCHAR; | |
928 | ||
929 | while (ch == ' ' || ch == '\t') | |
930 | ch = READCHAR; | |
931 | ||
932 | val_end = val; | |
933 | while (ch != ';' && ch != '\n' && ch != EOF && in_file_vars) | |
934 | { | |
935 | if (val_end < val + sizeof val - 1) | |
936 | *val_end++ = ch; | |
937 | UPDATE_BEG_END_STATE (ch); | |
938 | ch = READCHAR; | |
939 | } | |
940 | if (! in_file_vars) | |
941 | /* The value was terminated by an end-marker, which | |
942 | remove. */ | |
943 | val_end -= 3; | |
944 | while (val_end > val | |
945 | && (val_end[-1] == ' ' || val_end[-1] == '\t')) | |
946 | val_end--; | |
947 | *val_end = '\0'; | |
948 | ||
949 | if (strcmp (var, "lexical-binding") == 0) | |
950 | /* This is it... */ | |
951 | { | |
952 | rv = (strcmp (val, "nil") != 0); | |
953 | break; | |
954 | } | |
955 | } | |
956 | } | |
957 | ||
958 | while (ch != '\n' && ch != EOF) | |
959 | ch = READCHAR; | |
960 | ||
961 | return rv; | |
962 | } | |
963 | } | |
964 | ||
965 | \f | |
8792be66 | 966 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 967 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
968 | safe to load. Only files compiled with Emacs are safe to load. |
969 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
970 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
971 | |
972 | static int | |
971de7fb | 973 | safe_to_load_p (int fd) |
da84f340 GM |
974 | { |
975 | char buf[512]; | |
976 | int nbytes, i; | |
977 | int safe_p = 1; | |
8f924df7 | 978 | int version = 1; |
da84f340 GM |
979 | |
980 | /* Read the first few bytes from the file, and look for a line | |
981 | specifying the byte compiler version used. */ | |
982 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
983 | if (nbytes > 0) | |
984 | { | |
985 | buf[nbytes] = '\0'; | |
986 | ||
987 | /* Skip to the next newline, skipping over the initial `ELC' | |
1da3b9e4 | 988 | with NUL bytes following it, but note the version. */ |
da84f340 | 989 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 990 | if (i == 4) |
8792be66 | 991 | version = buf[i]; |
da84f340 | 992 | |
927f12da KH |
993 | if (i == nbytes |
994 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
da84f340 GM |
995 | buf + i) < 0) |
996 | safe_p = 0; | |
997 | } | |
1da3b9e4 DL |
998 | if (safe_p) |
999 | safe_p = version; | |
da84f340 GM |
1000 | |
1001 | lseek (fd, 0, SEEK_SET); | |
1002 | return safe_p; | |
1003 | } | |
1004 | ||
1005 | ||
7ee3bd7b GM |
1006 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
1007 | after loading a file successfully. */ | |
1008 | ||
1009 | static Lisp_Object | |
971de7fb | 1010 | record_load_unwind (Lisp_Object old) |
7ee3bd7b GM |
1011 | { |
1012 | return Vloads_in_progress = old; | |
1013 | } | |
1014 | ||
164c8bfe RS |
1015 | /* This handler function is used via internal_condition_case_1. */ |
1016 | ||
1017 | static Lisp_Object | |
971de7fb | 1018 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
1019 | { |
1020 | return Qnil; | |
1021 | } | |
7ee3bd7b | 1022 | |
1d064697 | 1023 | static Lisp_Object |
971de7fb | 1024 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
1025 | { |
1026 | if (!NILP (Vold_style_backquotes)) | |
1027 | { | |
b636b4c1 | 1028 | Lisp_Object args[2]; |
18a4a65e | 1029 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
1030 | args[1] = file; |
1031 | Fmessage (2, args); | |
1032 | } | |
1033 | return Qnil; | |
1034 | } | |
1035 | ||
971a4293 LT |
1036 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
1037 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
1038 | required. | |
1039 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
5842a27b | 1040 | (void) |
971a4293 LT |
1041 | { |
1042 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
1043 | while (CONSP (suffixes)) | |
1044 | { | |
1045 | Lisp_Object exts = Vload_file_rep_suffixes; | |
1046 | suffix = XCAR (suffixes); | |
1047 | suffixes = XCDR (suffixes); | |
1048 | while (CONSP (exts)) | |
1049 | { | |
1050 | ext = XCAR (exts); | |
1051 | exts = XCDR (exts); | |
1052 | lst = Fcons (concat2 (suffix, ext), lst); | |
1053 | } | |
1054 | } | |
1055 | return Fnreverse (lst); | |
1056 | } | |
1057 | ||
f0a50954 | 1058 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
1059 | doc: /* Execute a file of Lisp code named FILE. |
1060 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 1061 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 1062 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 1063 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 1064 | This function searches the directories in `load-path'. |
971a4293 | 1065 | |
5de38842 | 1066 | If optional second arg NOERROR is non-nil, |
971a4293 | 1067 | report no error if FILE doesn't exist. |
5de38842 | 1068 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
1069 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
1070 | overrides that). | |
5de38842 | 1071 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 1072 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 1073 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
1074 | the suffix `.elc' or `.el'; don't accept just FILE unless |
1075 | it ends in one of those suffixes or includes a directory name. | |
1076 | ||
1077 | If this function fails to find a file, it may look for different | |
1078 | representations of that file before trying another file. | |
1079 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
1080 | to the file name. Emacs uses this feature mainly to find compressed | |
1081 | versions of files when Auto Compression mode is enabled. | |
1082 | ||
1083 | The exact suffixes that this function tries out, in the exact order, | |
1084 | are given by the value of the variable `load-file-rep-suffixes' if | |
1085 | NOSUFFIX is non-nil and by the return value of the function | |
1086 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
1087 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
1088 | and then the former. | |
0fc213e9 RS |
1089 | |
1090 | Loading a file records its definitions, and its `provide' and | |
1091 | `require' calls, in an element of `load-history' whose | |
1092 | car is the file name loaded. See `load-history'. | |
1093 | ||
971a4293 | 1094 | Return t if the file exists and loads successfully. */) |
5842a27b | 1095 | (Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage, Lisp_Object nosuffix, Lisp_Object must_suffix) |
078e7b4a JB |
1096 | { |
1097 | register FILE *stream; | |
1098 | register int fd = -1; | |
aed13378 | 1099 | int count = SPECPDL_INDEX (); |
6bb6da3e AM |
1100 | struct gcpro gcpro1, gcpro2, gcpro3; |
1101 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
1102 | /* 1 means we printed the ".el is newer" message. */ |
1103 | int newer = 0; | |
1104 | /* 1 means we are loading a compiled file. */ | |
1105 | int compiled = 0; | |
c2225d00 | 1106 | Lisp_Object handler; |
456c67a4 | 1107 | int safe_p = 1; |
229ba775 | 1108 | char *fmode = "r"; |
6bb6da3e | 1109 | Lisp_Object tmp[2]; |
8792be66 KH |
1110 | int version; |
1111 | ||
317073d5 | 1112 | #ifdef DOS_NT |
229ba775 | 1113 | fmode = "rt"; |
317073d5 | 1114 | #endif /* DOS_NT */ |
078e7b4a | 1115 | |
b7826503 | 1116 | CHECK_STRING (file); |
078e7b4a | 1117 | |
c2225d00 | 1118 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1119 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1120 | handler = Ffind_file_name_handler (file, Qload); | |
1121 | if (!NILP (handler)) | |
1122 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1123 | |
07a0bda3 RS |
1124 | /* Do this after the handler to avoid |
1125 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1126 | (Below here, we care only whether they are nil or not.) |
1127 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1128 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1129 | everywhere, it accidentally stayed here. Since then, enough people |
1130 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1131 | that it seemed risky to remove. */ | |
164c8bfe RS |
1132 | if (! NILP (noerror)) |
1133 | { | |
1134 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1135 | Qt, load_error_handler); | |
1136 | if (NILP (file)) | |
1137 | return Qnil; | |
1138 | } | |
1139 | else | |
1140 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1141 | |
07a0bda3 | 1142 | |
078e7b4a JB |
1143 | /* Avoid weird lossage with null string as arg, |
1144 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 1145 | if (SCHARS (file) > 0) |
078e7b4a | 1146 | { |
d5db4077 | 1147 | int size = SBYTES (file); |
211f7dcd | 1148 | |
0fc213e9 RS |
1149 | found = Qnil; |
1150 | GCPRO2 (file, found); | |
211f7dcd RS |
1151 | |
1152 | if (! NILP (must_suffix)) | |
1153 | { | |
1154 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
1155 | if (size > 3 | |
d5db4077 | 1156 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1157 | must_suffix = Qnil; |
1158 | else if (size > 4 | |
d5db4077 | 1159 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1160 | must_suffix = Qnil; |
1161 | /* Don't insist on adding a suffix | |
1162 | if the argument includes a directory name. */ | |
1163 | else if (! NILP (Ffile_name_directory (file))) | |
1164 | must_suffix = Qnil; | |
1165 | } | |
1166 | ||
f0a50954 | 1167 | fd = openp (Vload_path, file, |
e61b9b87 | 1168 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
1169 | : !NILP (must_suffix) ? Fget_load_suffixes () |
1170 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
1171 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 1172 | tmp))), |
86d00812 | 1173 | &found, Qnil); |
5a6e5452 | 1174 | UNGCPRO; |
078e7b4a JB |
1175 | } |
1176 | ||
96dc0f4e | 1177 | if (fd == -1) |
078e7b4a | 1178 | { |
265a9e55 | 1179 | if (NILP (noerror)) |
336d4a9c KS |
1180 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
1181 | return Qnil; | |
078e7b4a JB |
1182 | } |
1183 | ||
ba0d1195 | 1184 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1185 | if (EQ (Qt, Vuser_init_file)) |
1186 | Vuser_init_file = found; | |
1187 | ||
96dc0f4e MB |
1188 | /* If FD is -2, that means openp found a magic file. */ |
1189 | if (fd == -2) | |
74549846 | 1190 | { |
5e24a1f7 KH |
1191 | if (NILP (Fequal (found, file))) |
1192 | /* If FOUND is a different file name from FILE, | |
1193 | find its handler even if we have already inhibited | |
1194 | the `load' operation on FILE. */ | |
1195 | handler = Ffind_file_name_handler (found, Qt); | |
1196 | else | |
1197 | handler = Ffind_file_name_handler (found, Qload); | |
1198 | if (! NILP (handler)) | |
1199 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
1200 | } |
1201 | ||
550a625e GM |
1202 | /* Check if we're stuck in a recursive load cycle. |
1203 | ||
1204 | 2000-09-21: It's not possible to just check for the file loaded | |
1205 | being a member of Vloads_in_progress. This fails because of the | |
1206 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1207 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1208 | leads to a certain amount of ``normal'' recursion. |
1209 | ||
1210 | Also, just loading a file recursively is not always an error in | |
1211 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
1212 | { |
1213 | int count = 0; | |
1214 | Lisp_Object tem; | |
1215 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
8fc45744 JB |
1216 | if (!NILP (Fequal (found, XCAR (tem))) && (++count > 3)) |
1217 | { | |
1218 | if (fd >= 0) | |
1219 | emacs_close (fd); | |
1220 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); | |
1221 | } | |
3ba6fd9a RS |
1222 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1223 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1224 | } | |
7ee3bd7b | 1225 | |
b9598260 SM |
1226 | /* All loads are by default dynamic, unless the file itself specifies |
1227 | otherwise using a file-variable in the first line. This is bound here | |
1228 | so that it takes effect whether or not we use | |
1229 | Vload_source_file_function. */ | |
1230 | specbind (Qlexical_binding, Qnil); | |
1231 | ||
6bb6da3e AM |
1232 | /* Get the name for load-history. */ |
1233 | hist_file_name = (! NILP (Vpurify_flag) | |
1234 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
1235 | tmp[1] = Ffile_name_nondirectory (found), | |
1236 | tmp)) | |
1237 | : found) ; | |
1238 | ||
8792be66 | 1239 | version = -1; |
1bb9a689 | 1240 | |
88852d45 | 1241 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1242 | specbind (Qold_style_backquotes, Qnil); |
1243 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1244 | ||
72af86bd | 1245 | if (!memcmp (SDATA (found) + SBYTES (found) - 4, ".elc", 4) |
74327f7a | 1246 | || (fd >= 0 && (version = safe_to_load_p (fd)) > 0)) |
96dc0f4e MB |
1247 | /* Load .elc files directly, but not when they are |
1248 | remote and have no handler! */ | |
078e7b4a | 1249 | { |
96dc0f4e | 1250 | if (fd != -2) |
da84f340 | 1251 | { |
96dc0f4e MB |
1252 | struct stat s1, s2; |
1253 | int result; | |
da84f340 | 1254 | |
6bb6da3e | 1255 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1256 | |
8792be66 KH |
1257 | if (version < 0 |
1258 | && ! (version = safe_to_load_p (fd))) | |
96dc0f4e MB |
1259 | { |
1260 | safe_p = 0; | |
1261 | if (!load_dangerous_libraries) | |
e63304b7 DL |
1262 | { |
1263 | if (fd >= 0) | |
1264 | emacs_close (fd); | |
1265 | error ("File `%s' was not compiled in Emacs", | |
1266 | SDATA (found)); | |
1267 | } | |
beb0b7f9 | 1268 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1269 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1270 | } | |
04fc68e7 | 1271 | |
96dc0f4e MB |
1272 | compiled = 1; |
1273 | ||
eb191db2 EZ |
1274 | efound = ENCODE_FILE (found); |
1275 | ||
26fbf20b | 1276 | #ifdef DOS_NT |
96dc0f4e | 1277 | fmode = "rb"; |
26fbf20b | 1278 | #endif /* DOS_NT */ |
d5db4077 | 1279 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 1280 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 1281 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 1282 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 1283 | |
96dc0f4e MB |
1284 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
1285 | { | |
1286 | /* Make the progress messages mention that source is newer. */ | |
1287 | newer = 1; | |
04fc68e7 | 1288 | |
96dc0f4e | 1289 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1290 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1291 | { |
0fc213e9 RS |
1292 | Lisp_Object msg_file; |
1293 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1294 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1295 | msg_file, 1); |
714d8c39 | 1296 | } |
96dc0f4e | 1297 | } |
0fc213e9 | 1298 | UNGCPRO; |
51ac6f83 | 1299 | } |
078e7b4a | 1300 | } |
fe0e03f3 KH |
1301 | else |
1302 | { | |
1303 | /* We are loading a source file (*.el). */ | |
1304 | if (!NILP (Vload_source_file_function)) | |
1305 | { | |
7ee3bd7b | 1306 | Lisp_Object val; |
96dc0f4e MB |
1307 | |
1308 | if (fd >= 0) | |
68c45bf0 | 1309 | emacs_close (fd); |
6bb6da3e | 1310 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1311 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1312 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1313 | return unbind_to (count, val); |
fe0e03f3 KH |
1314 | } |
1315 | } | |
078e7b4a | 1316 | |
6bb6da3e | 1317 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1318 | |
229ba775 | 1319 | #ifdef WINDOWSNT |
68c45bf0 | 1320 | emacs_close (fd); |
eb191db2 | 1321 | efound = ENCODE_FILE (found); |
d5db4077 | 1322 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
1323 | #else /* not WINDOWSNT */ |
1324 | stream = fdopen (fd, fmode); | |
1325 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
1326 | if (stream == 0) |
1327 | { | |
68c45bf0 | 1328 | emacs_close (fd); |
d5db4077 | 1329 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
1330 | } |
1331 | ||
4b104c41 | 1332 | if (! NILP (Vpurify_flag)) |
ca0a881a | 1333 | Vpreloaded_file_list = Fcons (Fpurecopy(file), Vpreloaded_file_list); |
4b104c41 | 1334 | |
beb0b7f9 | 1335 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1336 | { |
da84f340 GM |
1337 | if (!safe_p) |
1338 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1339 | file, 1); | |
1340 | else if (!compiled) | |
e28552a4 | 1341 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1342 | else if (newer) |
e28552a4 RS |
1343 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1344 | file, 1); | |
db5cae4b | 1345 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1346 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1347 | } |
078e7b4a | 1348 | |
c04d9e70 | 1349 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 1350 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 1351 | specbind (Qload_file_name, found); |
74549846 | 1352 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
1353 | load_descriptor_list |
1354 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
b9598260 | 1355 | |
2baf5e76 | 1356 | specbind (Qload_in_progress, Qt); |
b9598260 SM |
1357 | |
1358 | instream = stream; | |
1359 | if (lisp_file_lexically_bound_p (Qget_file_char)) | |
1360 | Fset (Qlexical_binding, Qt); | |
1361 | ||
ab2a47e1 | 1362 | if (! version || version >= 22) |
b883cdb2 | 1363 | readevalloop (Qget_file_char, stream, hist_file_name, |
6a2bd1a5 | 1364 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1365 | else |
1366 | { | |
1367 | /* We can't handle a file which was compiled with | |
1368 | byte-compile-dynamic by older version of Emacs. */ | |
1369 | specbind (Qload_force_doc_strings, Qt); | |
b883cdb2 | 1370 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, Feval, |
768d4533 | 1371 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1372 | } |
078e7b4a JB |
1373 | unbind_to (count, Qnil); |
1374 | ||
6bb6da3e | 1375 | /* Run any eval-after-load forms for this file */ |
428b13d6 | 1376 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1377 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1378 | ||
078e7b4a JB |
1379 | UNGCPRO; |
1380 | ||
97dead2d | 1381 | xfree (saved_doc_string); |
b2a30870 RS |
1382 | saved_doc_string = 0; |
1383 | saved_doc_string_size = 0; | |
1384 | ||
70fdbb46 | 1385 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1386 | prev_saved_doc_string = 0; |
1387 | prev_saved_doc_string_size = 0; | |
1388 | ||
beb0b7f9 | 1389 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1390 | { |
da84f340 GM |
1391 | if (!safe_p) |
1392 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1393 | file, 1); | |
1394 | else if (!compiled) | |
e28552a4 | 1395 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1396 | else if (newer) |
e28552a4 RS |
1397 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1398 | file, 1); | |
db5cae4b | 1399 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1400 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1401 | } |
7ee3bd7b | 1402 | |
078e7b4a JB |
1403 | return Qt; |
1404 | } | |
1405 | ||
1406 | static Lisp_Object | |
971de7fb DN |
1407 | load_unwind (Lisp_Object arg) /* used as unwind-protect function in load */ |
1408 | ||
078e7b4a | 1409 | { |
ebfe97a2 KS |
1410 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1411 | if (stream != NULL) | |
66cd0949 YM |
1412 | { |
1413 | BLOCK_INPUT; | |
1414 | fclose (stream); | |
1415 | UNBLOCK_INPUT; | |
1416 | } | |
078e7b4a JB |
1417 | return Qnil; |
1418 | } | |
1419 | ||
d2c6be7f | 1420 | static Lisp_Object |
971de7fb | 1421 | load_descriptor_unwind (Lisp_Object oldlist) |
d2c6be7f RS |
1422 | { |
1423 | load_descriptor_list = oldlist; | |
838abf56 | 1424 | return Qnil; |
d2c6be7f RS |
1425 | } |
1426 | ||
1427 | /* Close all descriptors in use for Floads. | |
1428 | This is used when starting a subprocess. */ | |
1429 | ||
1430 | void | |
971de7fb | 1431 | close_load_descs (void) |
d2c6be7f | 1432 | { |
f3849f25 | 1433 | #ifndef WINDOWSNT |
d2c6be7f | 1434 | Lisp_Object tail; |
9beb8baa | 1435 | for (tail = load_descriptor_list; CONSP (tail); tail = XCDR (tail)) |
68c45bf0 | 1436 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1437 | #endif |
d2c6be7f | 1438 | } |
078e7b4a JB |
1439 | \f |
1440 | static int | |
971de7fb | 1441 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1442 | { |
4b2dd274 | 1443 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1444 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1445 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1446 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1447 | } |
1448 | ||
86d00812 SM |
1449 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1450 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1451 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1452 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1453 | file name when searching. | |
1454 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1455 | PREDICATE can also be an integer to pass to the access(2) function, | |
1456 | in which case file-name-handlers are ignored. */) | |
5842a27b | 1457 | (Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate) |
86d00812 SM |
1458 | { |
1459 | Lisp_Object file; | |
1460 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1461 | if (NILP (predicate) && fd > 0) | |
1462 | close (fd); | |
1463 | return file; | |
1464 | } | |
1465 | ||
1466 | ||
078e7b4a JB |
1467 | /* Search for a file whose name is STR, looking in directories |
1468 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1469 | On success, returns a file descriptor. On failure, returns -1. |
1470 | ||
e61b9b87 | 1471 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1472 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1473 | |
86d00812 SM |
1474 | PREDICATE non-nil means don't open the files, |
1475 | just look for one that satisfies the predicate. In this case, | |
1476 | returns 1 on success. The predicate can be a lisp function or | |
1477 | an integer to pass to `access' (in which case file-name-handlers | |
1478 | are ignored). | |
078e7b4a JB |
1479 | |
1480 | If STOREPTR is nonzero, it points to a slot where the name of | |
1481 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1482 | nil is stored there on failure. |
1483 | ||
96dc0f4e | 1484 | If the file we find is remote, return -2 |
86d00812 | 1485 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1486 | |
1487 | int | |
971de7fb | 1488 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, Lisp_Object *storeptr, Lisp_Object predicate) |
078e7b4a JB |
1489 | { |
1490 | register int fd; | |
1491 | int fn_size = 100; | |
1492 | char buf[100]; | |
1493 | register char *fn = buf; | |
1494 | int absolute = 0; | |
1495 | int want_size; | |
74549846 | 1496 | Lisp_Object filename; |
078e7b4a | 1497 | struct stat st; |
eb191db2 EZ |
1498 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1499 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1500 | int max_suffix_len = 0; |
1501 | ||
6f8eafd1 SM |
1502 | CHECK_STRING (str); |
1503 | ||
e61b9b87 SM |
1504 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1505 | { | |
f5df591a | 1506 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1507 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1508 | SBYTES (XCAR (tail))); |
e61b9b87 | 1509 | } |
078e7b4a | 1510 | |
8b9d426a | 1511 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1512 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1513 | ||
078e7b4a JB |
1514 | if (storeptr) |
1515 | *storeptr = Qnil; | |
1516 | ||
1517 | if (complete_filename_p (str)) | |
1518 | absolute = 1; | |
1519 | ||
e61b9b87 | 1520 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1521 | { |
e61b9b87 | 1522 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1523 | if (!complete_filename_p (filename)) |
1524 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1525 | /* Of course, this could conceivably lose if luser sets | |
1526 | default-directory to be something non-absolute... */ | |
1527 | { | |
1528 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1529 | if (!complete_filename_p (filename)) | |
1530 | /* Give up on this path element! */ | |
1531 | continue; | |
1532 | } | |
1533 | ||
1534 | /* Calculate maximum size of any filename made from | |
1535 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1536 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1537 | if (fn_size < want_size) |
1538 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1539 | ||
078e7b4a | 1540 | /* Loop over suffixes. */ |
a74d1c97 | 1541 | for (tail = NILP (suffixes) ? Fcons (empty_unibyte_string, Qnil) : suffixes; |
e61b9b87 | 1542 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1543 | { |
d5db4077 | 1544 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1545 | Lisp_Object handler; |
eb191db2 | 1546 | int exists; |
078e7b4a | 1547 | |
c49afcd7 RS |
1548 | /* Concatenate path element/specified name with the suffix. |
1549 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1550 | if (SCHARS (filename) > 2 |
1551 | && SREF (filename, 0) == '/' | |
1552 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1553 | { |
d5db4077 KR |
1554 | strncpy (fn, SDATA (filename) + 2, |
1555 | SBYTES (filename) - 2); | |
1556 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1557 | } |
1558 | else | |
1559 | { | |
d5db4077 KR |
1560 | strncpy (fn, SDATA (filename), |
1561 | SBYTES (filename)); | |
1562 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1563 | } |
1564 | ||
078e7b4a | 1565 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1566 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1567 | |
74549846 | 1568 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1569 | /* We used to only check for handlers on non-absolute file names: |
1570 | if (absolute) | |
1571 | handler = Qnil; | |
1572 | else | |
1573 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1574 | It's not clear why that was the case and it breaks things like | |
1575 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1576 | string = build_string (fn); |
4773b8ca | 1577 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1578 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1579 | { | |
1580 | if (NILP (predicate)) | |
1581 | exists = !NILP (Ffile_readable_p (string)); | |
1582 | else | |
1583 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1584 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1585 | exists = 0; |
1586 | ||
1587 | if (exists) | |
078e7b4a JB |
1588 | { |
1589 | /* We succeeded; return this descriptor and filename. */ | |
1590 | if (storeptr) | |
eb191db2 | 1591 | *storeptr = string; |
5ef2a3c0 | 1592 | UNGCPRO; |
96dc0f4e | 1593 | return -2; |
74549846 RS |
1594 | } |
1595 | } | |
1596 | else | |
1597 | { | |
4b2dd274 | 1598 | const char *pfn; |
eb191db2 EZ |
1599 | |
1600 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1601 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1602 | exists = (stat (pfn, &st) >= 0 |
1603 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1604 | if (exists) |
1605 | { | |
1606 | /* Check that we can access or open it. */ | |
86d00812 SM |
1607 | if (NATNUMP (predicate)) |
1608 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1609 | else |
eb191db2 | 1610 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1611 | |
1612 | if (fd >= 0) | |
1613 | { | |
1614 | /* We succeeded; return this descriptor and filename. */ | |
1615 | if (storeptr) | |
eb191db2 | 1616 | *storeptr = string; |
74549846 RS |
1617 | UNGCPRO; |
1618 | return fd; | |
1619 | } | |
078e7b4a JB |
1620 | } |
1621 | } | |
078e7b4a | 1622 | } |
5a6e5452 | 1623 | if (absolute) |
5ef2a3c0 | 1624 | break; |
078e7b4a JB |
1625 | } |
1626 | ||
5ef2a3c0 KH |
1627 | UNGCPRO; |
1628 | return -1; | |
078e7b4a JB |
1629 | } |
1630 | ||
1631 | \f | |
ae321d28 RS |
1632 | /* Merge the list we've accumulated of globals from the current input source |
1633 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1634 | the source has an associated file name or not. |
1635 | ||
1636 | FILENAME is the file name that we are loading from. | |
1637 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1638 | |
1639 | static void | |
971de7fb | 1640 | build_load_history (Lisp_Object filename, int entire) |
ae321d28 RS |
1641 | { |
1642 | register Lisp_Object tail, prev, newelt; | |
1643 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1644 | register int foundit = 0; |
ae321d28 RS |
1645 | |
1646 | tail = Vload_history; | |
1647 | prev = Qnil; | |
b502a9a1 | 1648 | |
86d00812 | 1649 | while (CONSP (tail)) |
ae321d28 | 1650 | { |
86d00812 | 1651 | tem = XCAR (tail); |
ae321d28 RS |
1652 | |
1653 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1654 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1655 | { |
1656 | foundit = 1; | |
1657 | ||
b502a9a1 RS |
1658 | /* If we're loading the entire file, remove old data. */ |
1659 | if (entire) | |
86d00812 | 1660 | { |
ae321d28 | 1661 | if (NILP (prev)) |
86d00812 | 1662 | Vload_history = XCDR (tail); |
ae321d28 | 1663 | else |
86d00812 | 1664 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1665 | } |
1666 | ||
1667 | /* Otherwise, cons on new symbols that are not already members. */ | |
1668 | else | |
1669 | { | |
1670 | tem2 = Vcurrent_load_list; | |
1671 | ||
1672 | while (CONSP (tem2)) | |
1673 | { | |
86d00812 | 1674 | newelt = XCAR (tem2); |
ae321d28 | 1675 | |
d642e4f9 | 1676 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1677 | Fsetcar (tail, Fcons (XCAR (tem), |
1678 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1679 | |
86d00812 | 1680 | tem2 = XCDR (tem2); |
ae321d28 RS |
1681 | QUIT; |
1682 | } | |
1683 | } | |
1684 | } | |
1685 | else | |
1686 | prev = tail; | |
86d00812 | 1687 | tail = XCDR (tail); |
ae321d28 RS |
1688 | QUIT; |
1689 | } | |
1690 | ||
b502a9a1 RS |
1691 | /* If we're loading an entire file, cons the new assoc onto the |
1692 | front of load-history, the most-recently-loaded position. Also | |
1693 | do this if we didn't find an existing member for the file. */ | |
1694 | if (entire || !foundit) | |
8a1f1537 RS |
1695 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1696 | Vload_history); | |
ae321d28 RS |
1697 | } |
1698 | ||
078e7b4a | 1699 | Lisp_Object |
971de7fb DN |
1700 | unreadpure (Lisp_Object junk) /* Used as unwind-protect function in readevalloop */ |
1701 | ||
078e7b4a JB |
1702 | { |
1703 | read_pure = 0; | |
1704 | return Qnil; | |
1705 | } | |
1706 | ||
94e554db | 1707 | static Lisp_Object |
971de7fb | 1708 | readevalloop_1 (Lisp_Object old) |
94e554db RS |
1709 | { |
1710 | load_convert_to_unibyte = ! NILP (old); | |
1711 | return Qnil; | |
1712 | } | |
1713 | ||
9c97398c GM |
1714 | /* Signal an `end-of-file' error, if possible with file name |
1715 | information. */ | |
1716 | ||
1717 | static void | |
971de7fb | 1718 | end_of_file_error (void) |
9c97398c | 1719 | { |
9c97398c | 1720 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1721 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1722 | |
336d4a9c | 1723 | xsignal0 (Qend_of_file); |
9c97398c GM |
1724 | } |
1725 | ||
94e554db | 1726 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1727 | for this invocation. |
4c03c46d | 1728 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1729 | |
1730 | START, END specify region to read in current buffer (from eval-region). | |
1731 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1732 | |
078e7b4a | 1733 | static void |
dd4c5104 DN |
1734 | readevalloop (Lisp_Object readcharfun, |
1735 | FILE *stream, | |
1736 | Lisp_Object sourcename, | |
1737 | Lisp_Object (*evalfun) (Lisp_Object), | |
1738 | int printflag, | |
1739 | Lisp_Object unibyte, Lisp_Object readfun, | |
1740 | Lisp_Object start, Lisp_Object end) | |
078e7b4a JB |
1741 | { |
1742 | register int c; | |
1743 | register Lisp_Object val; | |
aed13378 | 1744 | int count = SPECPDL_INDEX (); |
0a37f512 | 1745 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1746 | struct buffer *b = 0; |
f38952fe | 1747 | int continue_reading_p; |
b9598260 | 1748 | Lisp_Object lex_bound; |
d11db2c8 RS |
1749 | /* Nonzero if reading an entire buffer. */ |
1750 | int whole_buffer = 0; | |
1751 | /* 1 on the first time around. */ | |
1752 | int first_sexp = 1; | |
1753 | ||
1754 | if (MARKERP (readcharfun)) | |
1755 | { | |
1756 | if (NILP (start)) | |
8878319c | 1757 | start = readcharfun; |
d11db2c8 | 1758 | } |
49cf7ff4 RS |
1759 | |
1760 | if (BUFFERP (readcharfun)) | |
1761 | b = XBUFFER (readcharfun); | |
1762 | else if (MARKERP (readcharfun)) | |
1763 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1764 | |
1ed7b9ae RS |
1765 | /* We assume START is nil when input is not from a buffer. */ |
1766 | if (! NILP (start) && !b) | |
1767 | abort (); | |
1768 | ||
0a37f512 | 1769 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1770 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1771 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1772 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1773 | |
b9598260 SM |
1774 | /* If lexical binding is active (either because it was specified in |
1775 | the file's header, or via a buffer-local variable), create an empty | |
1776 | lexical environment, otherwise, turn off lexical binding. */ | |
1777 | lex_bound = find_symbol_value (Qlexical_binding); | |
1778 | if (NILP (lex_bound) || EQ (lex_bound, Qunbound)) | |
1779 | specbind (Qinternal_interpreter_environment, Qnil); | |
1780 | else | |
1781 | specbind (Qinternal_interpreter_environment, Fcons (Qt, Qnil)); | |
1782 | ||
0a37f512 | 1783 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1784 | |
6bb6da3e AM |
1785 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1786 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1787 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1788 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1789 | sourcename = call1 (Qfile_truename, sourcename) ; |
1790 | ||
ae321d28 RS |
1791 | LOADHIST_ATTACH (sourcename); |
1792 | ||
f38952fe GM |
1793 | continue_reading_p = 1; |
1794 | while (continue_reading_p) | |
078e7b4a | 1795 | { |
4c03c46d KS |
1796 | int count1 = SPECPDL_INDEX (); |
1797 | ||
49cf7ff4 RS |
1798 | if (b != 0 && NILP (b->name)) |
1799 | error ("Reading from killed buffer"); | |
1800 | ||
4c03c46d KS |
1801 | if (!NILP (start)) |
1802 | { | |
721b7d9e | 1803 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1804 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1805 | set_buffer_internal (b); |
1806 | ||
1807 | /* Save point in it. */ | |
4c03c46d | 1808 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1809 | /* Save ZV in it. */ |
4c03c46d | 1810 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1811 | /* Those get unbound after we read one expression. */ |
1812 | ||
1813 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1814 | Fgoto_char (start); |
d11db2c8 RS |
1815 | if (!NILP (end)) |
1816 | Fnarrow_to_region (make_number (BEGV), end); | |
1817 | ||
1818 | /* Just for cleanliness, convert END to a marker | |
1819 | if it is an integer. */ | |
1820 | if (INTEGERP (end)) | |
1821 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1822 | } |
1823 | ||
d11db2c8 RS |
1824 | /* On the first cycle, we can easily test here |
1825 | whether we are reading the whole buffer. */ | |
1826 | if (b && first_sexp) | |
1827 | whole_buffer = (PT == BEG && ZV == Z); | |
1828 | ||
078e7b4a | 1829 | instream = stream; |
4c03c46d | 1830 | read_next: |
078e7b4a JB |
1831 | c = READCHAR; |
1832 | if (c == ';') | |
1833 | { | |
1834 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1835 | goto read_next; |
1836 | } | |
1837 | if (c < 0) | |
1838 | { | |
1839 | unbind_to (count1, Qnil); | |
1840 | break; | |
078e7b4a | 1841 | } |
6069d957 RS |
1842 | |
1843 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 RS |
1844 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
1845 | || c == 0x8a0) /* NBSP */ | |
4c03c46d | 1846 | goto read_next; |
078e7b4a | 1847 | |
265a9e55 | 1848 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1849 | { |
1850 | record_unwind_protect (unreadpure, Qnil); | |
1851 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1852 | } |
1853 | else | |
1854 | { | |
1855 | UNREAD (c); | |
4ad679f9 | 1856 | read_objects = Qnil; |
f38952fe GM |
1857 | if (!NILP (readfun)) |
1858 | { | |
1859 | val = call1 (readfun, readcharfun); | |
1860 | ||
1861 | /* If READCHARFUN has set point to ZV, we should | |
1862 | stop reading, even if the form read sets point | |
1863 | to a different value when evaluated. */ | |
1864 | if (BUFFERP (readcharfun)) | |
1865 | { | |
1866 | struct buffer *b = XBUFFER (readcharfun); | |
1867 | if (BUF_PT (b) == BUF_ZV (b)) | |
1868 | continue_reading_p = 0; | |
1869 | } | |
1870 | } | |
976350af | 1871 | else if (! NILP (Vload_read_function)) |
84a15045 | 1872 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1873 | else |
abb13b09 | 1874 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1875 | } |
1876 | ||
4c03c46d KS |
1877 | if (!NILP (start) && continue_reading_p) |
1878 | start = Fpoint_marker (); | |
d11db2c8 RS |
1879 | |
1880 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1881 | unbind_to (count1, Qnil); |
1882 | ||
d11db2c8 | 1883 | /* Now eval what we just read. */ |
078e7b4a | 1884 | val = (*evalfun) (val); |
f38952fe | 1885 | |
078e7b4a JB |
1886 | if (printflag) |
1887 | { | |
1888 | Vvalues = Fcons (val, Vvalues); | |
1889 | if (EQ (Vstandard_output, Qt)) | |
1890 | Fprin1 (val, Qnil); | |
1891 | else | |
1892 | Fprint (val, Qnil); | |
1893 | } | |
d11db2c8 RS |
1894 | |
1895 | first_sexp = 0; | |
078e7b4a JB |
1896 | } |
1897 | ||
8878319c | 1898 | build_load_history (sourcename, |
d11db2c8 | 1899 | stream || whole_buffer); |
b502a9a1 | 1900 | |
ae321d28 RS |
1901 | UNGCPRO; |
1902 | ||
078e7b4a JB |
1903 | unbind_to (count, Qnil); |
1904 | } | |
1905 | ||
1076254d | 1906 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1907 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1908 | When called from a Lisp program (i.e., not interactively), this |
1909 | function accepts up to five optional arguments: | |
5de38842 PJ |
1910 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1911 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1912 | A value of nil means discard it; anything else is stream for print. |
1913 | FILENAME specifies the file name to use for `load-history'. | |
1914 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1915 | invocation. | |
1916 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1917 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1918 | |
1919 | This function preserves the position of point. */) | |
5842a27b | 1920 | (Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print) |
228d4b1c | 1921 | { |
aed13378 | 1922 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1923 | Lisp_Object tem, buf; |
1924 | ||
9391b698 | 1925 | if (NILP (buffer)) |
228d4b1c JA |
1926 | buf = Fcurrent_buffer (); |
1927 | else | |
9391b698 | 1928 | buf = Fget_buffer (buffer); |
dfdb645c | 1929 | if (NILP (buf)) |
13febd85 | 1930 | error ("No such buffer"); |
228d4b1c | 1931 | |
1076254d | 1932 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1933 | tem = Qsymbolp; |
1934 | else | |
1935 | tem = printflag; | |
13febd85 RS |
1936 | |
1937 | if (NILP (filename)) | |
1938 | filename = XBUFFER (buf)->filename; | |
1939 | ||
3f39f996 | 1940 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c | 1941 | specbind (Qstandard_output, tem); |
b9598260 | 1942 | specbind (Qlexical_binding, Qnil); |
228d4b1c | 1943 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
bf1c0f27 | 1944 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
b9598260 SM |
1945 | if (lisp_file_lexically_bound_p (buf)) |
1946 | Fset (Qlexical_binding, Qt); | |
4c03c46d KS |
1947 | readevalloop (buf, 0, filename, Feval, |
1948 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1949 | unbind_to (count, Qnil); |
228d4b1c JA |
1950 | |
1951 | return Qnil; | |
1952 | } | |
1953 | ||
976350af | 1954 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1955 | doc: /* Execute the region as Lisp code. |
1956 | When called from programs, expects two arguments, | |
1957 | giving starting and ending indices in the current buffer | |
1958 | of the text to be executed. | |
1959 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1960 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1961 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1962 | instead of `read' to read each expression. It gets one argument | |
1963 | which is the input stream for reading characters. | |
1964 | ||
1965 | This function does not move point. */) | |
5842a27b | 1966 | (Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function) |
078e7b4a | 1967 | { |
aed13378 | 1968 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1969 | Lisp_Object tem, cbuf; |
1970 | ||
1971 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1972 | |
265a9e55 | 1973 | if (NILP (printflag)) |
078e7b4a JB |
1974 | tem = Qsymbolp; |
1975 | else | |
1976 | tem = printflag; | |
1977 | specbind (Qstandard_output, tem); | |
3f39f996 | 1978 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1979 | |
4c03c46d | 1980 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1981 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1982 | !NILP (printflag), Qnil, read_function, |
1983 | start, end); | |
078e7b4a JB |
1984 | |
1985 | return unbind_to (count, Qnil); | |
1986 | } | |
1987 | ||
078e7b4a JB |
1988 | \f |
1989 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1990 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1991 | If STREAM is nil, use the value of `standard-input' (which see). | |
1992 | STREAM or the value of `standard-input' may be: | |
1993 | a buffer (read from point and advance it) | |
1994 | a marker (read from where it points and advance it) | |
1995 | a function (call it with no arguments for each character, | |
1996 | call it with a char as argument to push a char back) | |
1997 | a string (takes text from string, starting at the beginning) | |
1998 | t (read text line using minibuffer and use it, or read from | |
1999 | standard input in batch mode). */) | |
5842a27b | 2000 | (Lisp_Object stream) |
078e7b4a | 2001 | { |
5be02dff KH |
2002 | if (NILP (stream)) |
2003 | stream = Vstandard_input; | |
2004 | if (EQ (stream, Qt)) | |
2005 | stream = Qread_char; | |
5be02dff | 2006 | if (EQ (stream, Qread_char)) |
078e7b4a | 2007 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 2008 | |
abb13b09 | 2009 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
2010 | } |
2011 | ||
2012 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
2013 | doc: /* Read one Lisp expression which is represented as text by STRING. |
2014 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
2015 | START and END optionally delimit a substring of STRING from which to read; | |
2016 | they default to 0 and (length STRING) respectively. */) | |
5842a27b | 2017 | (Lisp_Object string, Lisp_Object start, Lisp_Object end) |
078e7b4a | 2018 | { |
2530ceaf | 2019 | Lisp_Object ret; |
b7826503 | 2020 | CHECK_STRING (string); |
2530ceaf CW |
2021 | /* read_internal_start sets read_from_string_index. */ |
2022 | ret = read_internal_start (string, start, end); | |
5135ab39 | 2023 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 2024 | } |
078e7b4a | 2025 | |
abb13b09 CW |
2026 | /* Function to set up the global context we need in toplevel read |
2027 | calls. */ | |
2028 | static Lisp_Object | |
971de7fb | 2029 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
b8ce688b | 2030 | /* start, end only used when stream is a string. */ |
abb13b09 CW |
2031 | { |
2032 | Lisp_Object retval; | |
078e7b4a | 2033 | |
abb13b09 | 2034 | readchar_count = 0; |
17634846 | 2035 | new_backquote_flag = 0; |
4ad679f9 | 2036 | read_objects = Qnil; |
abb13b09 CW |
2037 | if (EQ (Vread_with_symbol_positions, Qt) |
2038 | || EQ (Vread_with_symbol_positions, stream)) | |
2039 | Vread_symbol_positions_list = Qnil; | |
2040 | ||
8f924df7 KH |
2041 | if (STRINGP (stream) |
2042 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 CW |
2043 | { |
2044 | int startval, endval; | |
8f924df7 | 2045 | Lisp_Object string; |
078e7b4a | 2046 | |
8f924df7 KH |
2047 | if (STRINGP (stream)) |
2048 | string = stream; | |
2049 | else | |
2050 | string = XCAR (stream); | |
078e7b4a | 2051 | |
abb13b09 | 2052 | if (NILP (end)) |
8f924df7 | 2053 | endval = SCHARS (string); |
abb13b09 CW |
2054 | else |
2055 | { | |
2056 | CHECK_NUMBER (end); | |
2057 | endval = XINT (end); | |
8f924df7 KH |
2058 | if (endval < 0 || endval > SCHARS (string)) |
2059 | args_out_of_range (string, end); | |
abb13b09 | 2060 | } |
17634846 | 2061 | |
abb13b09 CW |
2062 | if (NILP (start)) |
2063 | startval = 0; | |
2064 | else | |
2065 | { | |
2066 | CHECK_NUMBER (start); | |
2067 | startval = XINT (start); | |
2068 | if (startval < 0 || startval > endval) | |
8f924df7 | 2069 | args_out_of_range (string, start); |
abb13b09 CW |
2070 | } |
2071 | read_from_string_index = startval; | |
8f924df7 | 2072 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
2073 | read_from_string_limit = endval; |
2074 | } | |
177c0ea7 | 2075 | |
abb13b09 CW |
2076 | retval = read0 (stream); |
2077 | if (EQ (Vread_with_symbol_positions, Qt) | |
2078 | || EQ (Vread_with_symbol_positions, stream)) | |
2079 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
2080 | return retval; | |
078e7b4a JB |
2081 | } |
2082 | \f | |
336d4a9c KS |
2083 | |
2084 | /* Signal Qinvalid_read_syntax error. | |
2085 | S is error string of length N (if > 0) */ | |
2086 | ||
2087 | static void | |
971de7fb | 2088 | invalid_syntax (const char *s, int n) |
336d4a9c KS |
2089 | { |
2090 | if (!n) | |
2091 | n = strlen (s); | |
2092 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
2093 | } | |
2094 | ||
2095 | ||
6428369f KH |
2096 | /* Use this for recursive reads, in contexts where internal tokens |
2097 | are not allowed. */ | |
e28552a4 | 2098 | |
078e7b4a | 2099 | static Lisp_Object |
971de7fb | 2100 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
2101 | { |
2102 | register Lisp_Object val; | |
e28552a4 | 2103 | int c; |
078e7b4a | 2104 | |
17634846 | 2105 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2106 | if (!c) |
2107 | return val; | |
078e7b4a | 2108 | |
336d4a9c KS |
2109 | xsignal1 (Qinvalid_read_syntax, |
2110 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2111 | } |
2112 | \f | |
2113 | static int read_buffer_size; | |
2114 | static char *read_buffer; | |
2115 | ||
f6f79b37 | 2116 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2117 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2118 | |
078e7b4a | 2119 | static int |
971de7fb | 2120 | read_escape (Lisp_Object readcharfun, int stringp) |
078e7b4a JB |
2121 | { |
2122 | register int c = READCHAR; | |
9735b9ce | 2123 | /* \u allows up to four hex digits, \U up to eight. Default to the |
fffa137c | 2124 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 2125 | int unicode_hex_count = 4; |
f6f79b37 | 2126 | |
078e7b4a JB |
2127 | switch (c) |
2128 | { | |
f3849f25 | 2129 | case -1: |
da3b886d | 2130 | end_of_file_error (); |
f3849f25 | 2131 | |
078e7b4a | 2132 | case 'a': |
265a9e55 | 2133 | return '\007'; |
078e7b4a JB |
2134 | case 'b': |
2135 | return '\b'; | |
f405a585 RS |
2136 | case 'd': |
2137 | return 0177; | |
078e7b4a JB |
2138 | case 'e': |
2139 | return 033; | |
2140 | case 'f': | |
2141 | return '\f'; | |
2142 | case 'n': | |
2143 | return '\n'; | |
2144 | case 'r': | |
2145 | return '\r'; | |
2146 | case 't': | |
2147 | return '\t'; | |
2148 | case 'v': | |
2149 | return '\v'; | |
2150 | case '\n': | |
2151 | return -1; | |
e28552a4 | 2152 | case ' ': |
e7fc914b KH |
2153 | if (stringp) |
2154 | return -1; | |
2155 | return ' '; | |
078e7b4a JB |
2156 | |
2157 | case 'M': | |
2158 | c = READCHAR; | |
2159 | if (c != '-') | |
2160 | error ("Invalid escape character syntax"); | |
2161 | c = READCHAR; | |
2162 | if (c == '\\') | |
8792be66 | 2163 | c = read_escape (readcharfun, 0); |
7bd279cd | 2164 | return c | meta_modifier; |
f405a585 RS |
2165 | |
2166 | case 'S': | |
2167 | c = READCHAR; | |
2168 | if (c != '-') | |
2169 | error ("Invalid escape character syntax"); | |
2170 | c = READCHAR; | |
2171 | if (c == '\\') | |
8792be66 | 2172 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2173 | return c | shift_modifier; |
2174 | ||
2175 | case 'H': | |
2176 | c = READCHAR; | |
2177 | if (c != '-') | |
2178 | error ("Invalid escape character syntax"); | |
2179 | c = READCHAR; | |
2180 | if (c == '\\') | |
8792be66 | 2181 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2182 | return c | hyper_modifier; |
2183 | ||
2184 | case 'A': | |
2185 | c = READCHAR; | |
2186 | if (c != '-') | |
2187 | error ("Invalid escape character syntax"); | |
2188 | c = READCHAR; | |
2189 | if (c == '\\') | |
8792be66 | 2190 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2191 | return c | alt_modifier; |
2192 | ||
2193 | case 's': | |
2194 | c = READCHAR; | |
4d7528d0 | 2195 | if (stringp || c != '-') |
010b7eac RS |
2196 | { |
2197 | UNREAD (c); | |
2198 | return ' '; | |
2199 | } | |
7bd279cd RS |
2200 | c = READCHAR; |
2201 | if (c == '\\') | |
8792be66 | 2202 | c = read_escape (readcharfun, 0); |
7bd279cd | 2203 | return c | super_modifier; |
078e7b4a JB |
2204 | |
2205 | case 'C': | |
2206 | c = READCHAR; | |
2207 | if (c != '-') | |
2208 | error ("Invalid escape character syntax"); | |
2209 | case '^': | |
2210 | c = READCHAR; | |
2211 | if (c == '\\') | |
8792be66 | 2212 | c = read_escape (readcharfun, 0); |
164d590d KH |
2213 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2214 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2215 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2216 | return c | ctrl_modifier; | |
f405a585 RS |
2217 | /* ASCII control chars are made from letters (both cases), |
2218 | as well as the non-letters within 0100...0137. */ | |
2219 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2220 | return (c & (037 | ~0177)); | |
2221 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2222 | return (c & (037 | ~0177)); | |
078e7b4a | 2223 | else |
7bd279cd | 2224 | return c | ctrl_modifier; |
078e7b4a JB |
2225 | |
2226 | case '0': | |
2227 | case '1': | |
2228 | case '2': | |
2229 | case '3': | |
2230 | case '4': | |
2231 | case '5': | |
2232 | case '6': | |
2233 | case '7': | |
2234 | /* An octal escape, as in ANSI C. */ | |
2235 | { | |
2236 | register int i = c - '0'; | |
2237 | register int count = 0; | |
2238 | while (++count < 3) | |
2239 | { | |
2240 | if ((c = READCHAR) >= '0' && c <= '7') | |
2241 | { | |
2242 | i *= 8; | |
2243 | i += c - '0'; | |
2244 | } | |
2245 | else | |
2246 | { | |
2247 | UNREAD (c); | |
2248 | break; | |
2249 | } | |
2250 | } | |
177c0ea7 | 2251 | |
8f924df7 | 2252 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2253 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2254 | return i; |
2255 | } | |
2256 | ||
2257 | case 'x': | |
2258 | /* A hex escape, as in ANSI C. */ | |
2259 | { | |
2260 | int i = 0; | |
1571601b | 2261 | int count = 0; |
078e7b4a JB |
2262 | while (1) |
2263 | { | |
2264 | c = READCHAR; | |
2265 | if (c >= '0' && c <= '9') | |
2266 | { | |
2267 | i *= 16; | |
2268 | i += c - '0'; | |
2269 | } | |
2270 | else if ((c >= 'a' && c <= 'f') | |
2271 | || (c >= 'A' && c <= 'F')) | |
2272 | { | |
2273 | i *= 16; | |
2274 | if (c >= 'a' && c <= 'f') | |
2275 | i += c - 'a' + 10; | |
2276 | else | |
2277 | i += c - 'A' + 10; | |
2278 | } | |
2279 | else | |
2280 | { | |
2281 | UNREAD (c); | |
2282 | break; | |
2283 | } | |
1571601b | 2284 | count++; |
078e7b4a | 2285 | } |
f6f79b37 | 2286 | |
1571601b | 2287 | if (count < 3 && i >= 0x80) |
8792be66 | 2288 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2289 | return i; |
2290 | } | |
2291 | ||
71b169b8 EZ |
2292 | case 'U': |
2293 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2294 | unicode_hex_count = 8; | |
2295 | case 'u': | |
2296 | ||
9735b9ce | 2297 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2298 | not arbitrarily in the source code, as in some other languages. */ |
2299 | { | |
a808f22d | 2300 | unsigned int i = 0; |
71b169b8 | 2301 | int count = 0; |
71b169b8 EZ |
2302 | |
2303 | while (++count <= unicode_hex_count) | |
2304 | { | |
2305 | c = READCHAR; | |
a3ac22e4 | 2306 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
2307 | want. */ |
2308 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
2309 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2310 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2311 | else | |
2312 | { | |
2313 | error ("Non-hex digit used for Unicode escape"); | |
2314 | break; | |
2315 | } | |
2316 | } | |
a808f22d KH |
2317 | if (i > 0x10FFFF) |
2318 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2319 | return i; |
71b169b8 EZ |
2320 | } |
2321 | ||
078e7b4a JB |
2322 | default: |
2323 | return c; | |
2324 | } | |
2325 | } | |
2326 | ||
bf5d1a17 GM |
2327 | /* Read an integer in radix RADIX using READCHARFUN to read |
2328 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2329 | read error is signaled . Value is the integer read. Signals an | |
2330 | error if encountering invalid read syntax or if RADIX is out of | |
2331 | range. */ | |
2332 | ||
2333 | static Lisp_Object | |
971de7fb | 2334 | read_integer (Lisp_Object readcharfun, int radix) |
bf5d1a17 | 2335 | { |
5e37dc22 | 2336 | int ndigits = 0, invalid_p, c, sign = 0; |
155a6764 SM |
2337 | /* We use a floating point number because */ |
2338 | double number = 0; | |
bf5d1a17 GM |
2339 | |
2340 | if (radix < 2 || radix > 36) | |
2341 | invalid_p = 1; | |
2342 | else | |
2343 | { | |
2344 | number = ndigits = invalid_p = 0; | |
2345 | sign = 1; | |
2346 | ||
2347 | c = READCHAR; | |
2348 | if (c == '-') | |
2349 | { | |
2350 | c = READCHAR; | |
2351 | sign = -1; | |
2352 | } | |
2353 | else if (c == '+') | |
2354 | c = READCHAR; | |
177c0ea7 | 2355 | |
bf5d1a17 GM |
2356 | while (c >= 0) |
2357 | { | |
2358 | int digit; | |
177c0ea7 | 2359 | |
bf5d1a17 GM |
2360 | if (c >= '0' && c <= '9') |
2361 | digit = c - '0'; | |
2362 | else if (c >= 'a' && c <= 'z') | |
2363 | digit = c - 'a' + 10; | |
2364 | else if (c >= 'A' && c <= 'Z') | |
2365 | digit = c - 'A' + 10; | |
2366 | else | |
b632fa48 GM |
2367 | { |
2368 | UNREAD (c); | |
2369 | break; | |
2370 | } | |
bf5d1a17 GM |
2371 | |
2372 | if (digit < 0 || digit >= radix) | |
2373 | invalid_p = 1; | |
2374 | ||
2375 | number = radix * number + digit; | |
2376 | ++ndigits; | |
2377 | c = READCHAR; | |
2378 | } | |
2379 | } | |
2380 | ||
2381 | if (ndigits == 0 || invalid_p) | |
2382 | { | |
2383 | char buf[50]; | |
2384 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2385 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2386 | } |
2387 | ||
155a6764 | 2388 | return make_fixnum_or_float (sign * number); |
bf5d1a17 GM |
2389 | } |
2390 | ||
2391 | ||
6428369f KH |
2392 | /* If the next token is ')' or ']' or '.', we store that character |
2393 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2394 | zero in *PCH and we read and return one lisp object. |
2395 | ||
2396 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2397 | ||
078e7b4a | 2398 | static Lisp_Object |
971de7fb | 2399 | read1 (register Lisp_Object readcharfun, int *pch, int first_in_list) |
078e7b4a JB |
2400 | { |
2401 | register int c; | |
4ad679f9 | 2402 | int uninterned_symbol = 0; |
1202434b | 2403 | int multibyte; |
4ad679f9 | 2404 | |
6428369f | 2405 | *pch = 0; |
8792be66 | 2406 | load_each_byte = 0; |
078e7b4a JB |
2407 | |
2408 | retry: | |
2409 | ||
1202434b | 2410 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2411 | if (c < 0) |
2412 | end_of_file_error (); | |
078e7b4a JB |
2413 | |
2414 | switch (c) | |
2415 | { | |
2416 | case '(': | |
2417 | return read_list (0, readcharfun); | |
2418 | ||
2419 | case '[': | |
c15cfd1f | 2420 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2421 | |
2422 | case ')': | |
2423 | case ']': | |
078e7b4a | 2424 | { |
6428369f KH |
2425 | *pch = c; |
2426 | return Qnil; | |
078e7b4a JB |
2427 | } |
2428 | ||
2429 | case '#': | |
200f684e | 2430 | c = READCHAR; |
f19a0f5b TZ |
2431 | if (c == 's') |
2432 | { | |
2433 | c = READCHAR; | |
2434 | if (c == '(') | |
2435 | { | |
2436 | /* Accept extended format for hashtables (extensible to | |
2437 | other types), e.g. | |
2438 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ | |
2439 | Lisp_Object tmp = read_list (0, readcharfun); | |
2440 | Lisp_Object head = CAR_SAFE (tmp); | |
2441 | Lisp_Object data = Qnil; | |
2442 | Lisp_Object val = Qnil; | |
2443 | /* The size is 2 * number of allowed keywords to | |
2444 | make-hash-table. */ | |
9735b9ce | 2445 | Lisp_Object params[10]; |
f19a0f5b TZ |
2446 | Lisp_Object ht; |
2447 | Lisp_Object key = Qnil; | |
2448 | int param_count = 0; | |
9735b9ce | 2449 | |
f19a0f5b TZ |
2450 | if (!EQ (head, Qhash_table)) |
2451 | error ("Invalid extended read marker at head of #s list " | |
2452 | "(only hash-table allowed)"); | |
9735b9ce | 2453 | |
f19a0f5b TZ |
2454 | tmp = CDR_SAFE (tmp); |
2455 | ||
2456 | /* This is repetitive but fast and simple. */ | |
2457 | params[param_count] = QCsize; | |
2458 | params[param_count+1] = Fplist_get (tmp, Qsize); | |
5721b4ed AS |
2459 | if (!NILP (params[param_count + 1])) |
2460 | param_count += 2; | |
f19a0f5b TZ |
2461 | |
2462 | params[param_count] = QCtest; | |
2463 | params[param_count+1] = Fplist_get (tmp, Qtest); | |
5721b4ed AS |
2464 | if (!NILP (params[param_count + 1])) |
2465 | param_count += 2; | |
f19a0f5b TZ |
2466 | |
2467 | params[param_count] = QCweakness; | |
2468 | params[param_count+1] = Fplist_get (tmp, Qweakness); | |
5721b4ed AS |
2469 | if (!NILP (params[param_count + 1])) |
2470 | param_count += 2; | |
f19a0f5b TZ |
2471 | |
2472 | params[param_count] = QCrehash_size; | |
2473 | params[param_count+1] = Fplist_get (tmp, Qrehash_size); | |
5721b4ed AS |
2474 | if (!NILP (params[param_count + 1])) |
2475 | param_count += 2; | |
f19a0f5b TZ |
2476 | |
2477 | params[param_count] = QCrehash_threshold; | |
2478 | params[param_count+1] = Fplist_get (tmp, Qrehash_threshold); | |
5721b4ed AS |
2479 | if (!NILP (params[param_count + 1])) |
2480 | param_count += 2; | |
f19a0f5b TZ |
2481 | |
2482 | /* This is the hashtable data. */ | |
2483 | data = Fplist_get (tmp, Qdata); | |
2484 | ||
2485 | /* Now use params to make a new hashtable and fill it. */ | |
2486 | ht = Fmake_hash_table (param_count, params); | |
9735b9ce | 2487 | |
f19a0f5b TZ |
2488 | while (CONSP (data)) |
2489 | { | |
2490 | key = XCAR (data); | |
2491 | data = XCDR (data); | |
2492 | if (!CONSP (data)) | |
2493 | error ("Odd number of elements in hashtable data"); | |
2494 | val = XCAR (data); | |
2495 | data = XCDR (data); | |
2496 | Fputhash (key, val, ht); | |
2497 | } | |
9735b9ce | 2498 | |
f19a0f5b TZ |
2499 | return ht; |
2500 | } | |
5721b4ed AS |
2501 | UNREAD (c); |
2502 | invalid_syntax ("#", 1); | |
f19a0f5b | 2503 | } |
c2390933 RS |
2504 | if (c == '^') |
2505 | { | |
2506 | c = READCHAR; | |
2507 | if (c == '[') | |
2508 | { | |
2509 | Lisp_Object tmp; | |
c15cfd1f | 2510 | tmp = read_vector (readcharfun, 0); |
d10044c5 | 2511 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2512 | error ("Invalid size char-table"); |
985773c9 | 2513 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2514 | return tmp; |
2515 | } | |
3701b5de KH |
2516 | else if (c == '^') |
2517 | { | |
2518 | c = READCHAR; | |
2519 | if (c == '[') | |
2520 | { | |
2521 | Lisp_Object tmp; | |
1571601b | 2522 | int depth, size; |
8f924df7 | 2523 | |
c15cfd1f | 2524 | tmp = read_vector (readcharfun, 0); |
1571601b KH |
2525 | if (!INTEGERP (AREF (tmp, 0))) |
2526 | error ("Invalid depth in char-table"); | |
2527 | depth = XINT (AREF (tmp, 0)); | |
2528 | if (depth < 1 || depth > 3) | |
2529 | error ("Invalid depth in char-table"); | |
41482d36 | 2530 | size = XVECTOR (tmp)->size - 2; |
1571601b | 2531 | if (chartab_size [depth] != size) |
3701b5de | 2532 | error ("Invalid size char-table"); |
985773c9 | 2533 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2534 | return tmp; |
2535 | } | |
336d4a9c | 2536 | invalid_syntax ("#^^", 3); |
3701b5de | 2537 | } |
336d4a9c | 2538 | invalid_syntax ("#^", 2); |
c2390933 RS |
2539 | } |
2540 | if (c == '&') | |
2541 | { | |
2542 | Lisp_Object length; | |
2543 | length = read1 (readcharfun, pch, first_in_list); | |
2544 | c = READCHAR; | |
2545 | if (c == '"') | |
2546 | { | |
2547 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2548 | int size_in_chars |
2549 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2550 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2551 | |
2552 | UNREAD (c); | |
2553 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2554 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2555 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2556 | /* We used to print 1 char too many |
2557 | when the number of bits was a multiple of 8. | |
2558 | Accept such input in case it came from an old | |
2559 | version. */ | |
2560 | && ! (XFASTINT (length) | |
327719ee | 2561 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
336d4a9c | 2562 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2563 | |
c2390933 | 2564 | val = Fmake_bool_vector (length, Qnil); |
72af86bd | 2565 | memcpy (XBOOL_VECTOR (val)->data, SDATA (tmp), size_in_chars); |
67d3b149 | 2566 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2567 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2568 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2569 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2570 | return val; |
2571 | } | |
336d4a9c | 2572 | invalid_syntax ("#&...", 5); |
c2390933 | 2573 | } |
200f684e | 2574 | if (c == '[') |
b9598260 SM |
2575 | /* `function vector' objects, including byte-compiled functions. */ |
2576 | return read_vector (readcharfun, 1); | |
748ef62f RS |
2577 | if (c == '(') |
2578 | { | |
2579 | Lisp_Object tmp; | |
2580 | struct gcpro gcpro1; | |
e28552a4 | 2581 | int ch; |
748ef62f RS |
2582 | |
2583 | /* Read the string itself. */ | |
17634846 | 2584 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2585 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2586 | invalid_syntax ("#", 1); |
748ef62f RS |
2587 | GCPRO1 (tmp); |
2588 | /* Read the intervals and their properties. */ | |
2589 | while (1) | |
2590 | { | |
2591 | Lisp_Object beg, end, plist; | |
2592 | ||
17634846 | 2593 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2594 | end = plist = Qnil; |
6428369f KH |
2595 | if (ch == ')') |
2596 | break; | |
2597 | if (ch == 0) | |
17634846 | 2598 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2599 | if (ch == 0) |
17634846 | 2600 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2601 | if (ch) |
336d4a9c | 2602 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2603 | Fset_text_properties (beg, end, plist, tmp); |
2604 | } | |
2605 | UNGCPRO; | |
2606 | return tmp; | |
2607 | } | |
177c0ea7 | 2608 | |
20ea2964 RS |
2609 | /* #@NUMBER is used to skip NUMBER following characters. |
2610 | That's used in .elc files to skip over doc strings | |
2611 | and function definitions. */ | |
2612 | if (c == '@') | |
2613 | { | |
2614 | int i, nskip = 0; | |
2615 | ||
8792be66 | 2616 | load_each_byte = 1; |
20ea2964 RS |
2617 | /* Read a decimal integer. */ |
2618 | while ((c = READCHAR) >= 0 | |
2619 | && c >= '0' && c <= '9') | |
2620 | { | |
2621 | nskip *= 10; | |
2622 | nskip += c - '0'; | |
2623 | } | |
2624 | if (c >= 0) | |
2625 | UNREAD (c); | |
177c0ea7 | 2626 | |
8792be66 KH |
2627 | if (load_force_doc_strings |
2628 | && (EQ (readcharfun, Qget_file_char) | |
2629 | || EQ (readcharfun, Qget_emacs_mule_file_char))) | |
b2a30870 RS |
2630 | { |
2631 | /* If we are supposed to force doc strings into core right now, | |
2632 | record the last string that we skipped, | |
2633 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2634 | |
2635 | /* But first exchange saved_doc_string | |
2636 | with prev_saved_doc_string, so we save two strings. */ | |
2637 | { | |
2638 | char *temp = saved_doc_string; | |
2639 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2640 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2641 | int temp_len = saved_doc_string_length; |
2642 | ||
2643 | saved_doc_string = prev_saved_doc_string; | |
2644 | saved_doc_string_size = prev_saved_doc_string_size; | |
2645 | saved_doc_string_position = prev_saved_doc_string_position; | |
2646 | saved_doc_string_length = prev_saved_doc_string_length; | |
2647 | ||
2648 | prev_saved_doc_string = temp; | |
2649 | prev_saved_doc_string_size = temp_size; | |
2650 | prev_saved_doc_string_position = temp_pos; | |
2651 | prev_saved_doc_string_length = temp_len; | |
2652 | } | |
2653 | ||
b2a30870 RS |
2654 | if (saved_doc_string_size == 0) |
2655 | { | |
2656 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2657 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2658 | } |
2659 | if (nskip > saved_doc_string_size) | |
2660 | { | |
2661 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2662 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2663 | saved_doc_string_size); | |
b2a30870 RS |
2664 | } |
2665 | ||
68c45bf0 | 2666 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2667 | |
2668 | /* Copy that many characters into saved_doc_string. */ | |
2669 | for (i = 0; i < nskip && c >= 0; i++) | |
2670 | saved_doc_string[i] = c = READCHAR; | |
2671 | ||
2672 | saved_doc_string_length = i; | |
2673 | } | |
2674 | else | |
b2a30870 RS |
2675 | { |
2676 | /* Skip that many characters. */ | |
2677 | for (i = 0; i < nskip && c >= 0; i++) | |
2678 | c = READCHAR; | |
2679 | } | |
d49f0c1a | 2680 | |
8792be66 | 2681 | load_each_byte = 0; |
20ea2964 RS |
2682 | goto retry; |
2683 | } | |
e2518d02 RS |
2684 | if (c == '!') |
2685 | { | |
2686 | /* #! appears at the beginning of an executable file. | |
2687 | Skip the first line. */ | |
225c7a07 | 2688 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2689 | c = READCHAR; |
2690 | goto retry; | |
2691 | } | |
20ea2964 RS |
2692 | if (c == '$') |
2693 | return Vload_file_name; | |
2b6cae0c RS |
2694 | if (c == '\'') |
2695 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2696 | /* #:foo is the uninterned symbol named foo. */ |
2697 | if (c == ':') | |
2698 | { | |
2699 | uninterned_symbol = 1; | |
2700 | c = READCHAR; | |
2701 | goto default_label; | |
2702 | } | |
2703 | /* Reader forms that can reuse previously read objects. */ | |
2704 | if (c >= '0' && c <= '9') | |
2705 | { | |
2706 | int n = 0; | |
2707 | Lisp_Object tem; | |
2b6cae0c | 2708 | |
4ad679f9 EN |
2709 | /* Read a non-negative integer. */ |
2710 | while (c >= '0' && c <= '9') | |
2711 | { | |
2712 | n *= 10; | |
2713 | n += c - '0'; | |
2714 | c = READCHAR; | |
2715 | } | |
2716 | /* #n=object returns object, but associates it with n for #n#. */ | |
91f68422 | 2717 | if (c == '=' && !NILP (Vread_circle)) |
4ad679f9 | 2718 | { |
9e062b6c RS |
2719 | /* Make a placeholder for #n# to use temporarily */ |
2720 | Lisp_Object placeholder; | |
2721 | Lisp_Object cell; | |
2722 | ||
9735b9ce | 2723 | placeholder = Fcons (Qnil, Qnil); |
9e062b6c RS |
2724 | cell = Fcons (make_number (n), placeholder); |
2725 | read_objects = Fcons (cell, read_objects); | |
2726 | ||
2727 | /* Read the object itself. */ | |
4ad679f9 | 2728 | tem = read0 (readcharfun); |
9e062b6c RS |
2729 | |
2730 | /* Now put it everywhere the placeholder was... */ | |
2731 | substitute_object_in_subtree (tem, placeholder); | |
2732 | ||
2733 | /* ...and #n# will use the real value from now on. */ | |
2734 | Fsetcdr (cell, tem); | |
177c0ea7 | 2735 | |
4ad679f9 EN |
2736 | return tem; |
2737 | } | |
2738 | /* #n# returns a previously read object. */ | |
91f68422 | 2739 | if (c == '#' && !NILP (Vread_circle)) |
4ad679f9 EN |
2740 | { |
2741 | tem = Fassq (make_number (n), read_objects); | |
2742 | if (CONSP (tem)) | |
2743 | return XCDR (tem); | |
2744 | /* Fall through to error message. */ | |
2745 | } | |
bf5d1a17 GM |
2746 | else if (c == 'r' || c == 'R') |
2747 | return read_integer (readcharfun, n); | |
177c0ea7 | 2748 | |
4ad679f9 EN |
2749 | /* Fall through to error message. */ |
2750 | } | |
bf5d1a17 GM |
2751 | else if (c == 'x' || c == 'X') |
2752 | return read_integer (readcharfun, 16); | |
2753 | else if (c == 'o' || c == 'O') | |
2754 | return read_integer (readcharfun, 8); | |
2755 | else if (c == 'b' || c == 'B') | |
2756 | return read_integer (readcharfun, 2); | |
20ea2964 | 2757 | |
200f684e | 2758 | UNREAD (c); |
336d4a9c | 2759 | invalid_syntax ("#", 1); |
078e7b4a JB |
2760 | |
2761 | case ';': | |
2762 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2763 | goto retry; | |
2764 | ||
2765 | case '\'': | |
2766 | { | |
2767 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2768 | } | |
2769 | ||
17634846 | 2770 | case '`': |
9a39b306 TO |
2771 | { |
2772 | int next_char = READCHAR; | |
2773 | UNREAD (next_char); | |
2774 | /* Transition from old-style to new-style: | |
2775 | If we see "(`" it used to mean old-style, which usually works | |
2776 | fine because ` should almost never appear in such a position | |
2777 | for new-style. But occasionally we need "(`" to mean new | |
2778 | style, so we try to distinguish the two by the fact that we | |
2779 | can either write "( `foo" or "(` foo", where the first | |
2780 | intends to use new-style whereas the second intends to use | |
2781 | old-style. For Emacs-25, we should completely remove this | |
2782 | first_in_list exception (old-style can still be obtained via | |
2783 | "(\`" anyway). */ | |
2784 | if (first_in_list && next_char == ' ') | |
2785 | { | |
2786 | Vold_style_backquotes = Qt; | |
2787 | goto default_label; | |
2788 | } | |
2789 | else | |
2790 | { | |
2791 | Lisp_Object value; | |
17634846 | 2792 | |
9a39b306 TO |
2793 | new_backquote_flag++; |
2794 | value = read0 (readcharfun); | |
2795 | new_backquote_flag--; | |
17634846 | 2796 | |
9a39b306 TO |
2797 | return Fcons (Qbackquote, Fcons (value, Qnil)); |
2798 | } | |
2799 | } | |
17634846 RS |
2800 | case ',': |
2801 | if (new_backquote_flag) | |
2802 | { | |
2803 | Lisp_Object comma_type = Qnil; | |
2804 | Lisp_Object value; | |
2805 | int ch = READCHAR; | |
2806 | ||
2807 | if (ch == '@') | |
2808 | comma_type = Qcomma_at; | |
2809 | else if (ch == '.') | |
2810 | comma_type = Qcomma_dot; | |
2811 | else | |
2812 | { | |
2813 | if (ch >= 0) UNREAD (ch); | |
2814 | comma_type = Qcomma; | |
2815 | } | |
2816 | ||
0ffbbdeb | 2817 | new_backquote_flag--; |
17634846 | 2818 | value = read0 (readcharfun); |
0ffbbdeb | 2819 | new_backquote_flag++; |
17634846 RS |
2820 | return Fcons (comma_type, Fcons (value, Qnil)); |
2821 | } | |
2822 | else | |
9ecb827b SM |
2823 | { |
2824 | Vold_style_backquotes = Qt; | |
2825 | goto default_label; | |
2826 | } | |
17634846 | 2827 | |
078e7b4a JB |
2828 | case '?': |
2829 | { | |
8792be66 | 2830 | int modifiers; |
df9c2be7 KS |
2831 | int next_char; |
2832 | int ok; | |
f6f79b37 | 2833 | |
078e7b4a | 2834 | c = READCHAR; |
9c97398c GM |
2835 | if (c < 0) |
2836 | end_of_file_error (); | |
078e7b4a | 2837 | |
b9284371 KS |
2838 | /* Accept `single space' syntax like (list ? x) where the |
2839 | whitespace character is SPC or TAB. | |
2840 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2841 | as there are well-established escape sequences for these. */ | |
2842 | if (c == ' ' || c == '\t') | |
2843 | return make_number (c); | |
2844 | ||
078e7b4a | 2845 | if (c == '\\') |
8792be66 KH |
2846 | c = read_escape (readcharfun, 0); |
2847 | modifiers = c & CHAR_MODIFIER_MASK; | |
2848 | c &= ~CHAR_MODIFIER_MASK; | |
2849 | if (CHAR_BYTE8_P (c)) | |
2850 | c = CHAR_TO_BYTE8 (c); | |
2851 | c |= modifiers; | |
078e7b4a | 2852 | |
df9c2be7 KS |
2853 | next_char = READCHAR; |
2854 | if (next_char == '.') | |
2855 | { | |
2856 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2857 | int next_next_char = READCHAR; | |
2858 | UNREAD (next_next_char); | |
2859 | ||
2860 | ok = (next_next_char <= 040 | |
e613ea97 | 2861 | || (next_next_char < 0200 |
8966b757 | 2862 | && (strchr ("\"';([#?", next_next_char) |
e613ea97 KH |
2863 | || (!first_in_list && next_next_char == '`') |
2864 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2865 | } |
2866 | else | |
2867 | { | |
2868 | ok = (next_char <= 040 | |
e613ea97 | 2869 | || (next_char < 0200 |
8966b757 | 2870 | && (strchr ("\"';()[]#?", next_char) |
e613ea97 KH |
2871 | || (!first_in_list && next_char == '`') |
2872 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2873 | } |
2874 | UNREAD (next_char); | |
336d4a9c KS |
2875 | if (ok) |
2876 | return make_number (c); | |
37cd4238 | 2877 | |
336d4a9c | 2878 | invalid_syntax ("?", 1); |
078e7b4a JB |
2879 | } |
2880 | ||
00a9a935 | 2881 | case '"': |
078e7b4a | 2882 | { |
a742d646 GM |
2883 | char *p = read_buffer; |
2884 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2885 | register int c; |
1571601b KH |
2886 | /* Nonzero if we saw an escape sequence specifying |
2887 | a multibyte character. */ | |
e7fc914b | 2888 | int force_multibyte = 0; |
1571601b | 2889 | /* Nonzero if we saw an escape sequence specifying |
e7fc914b KH |
2890 | a single-byte character. */ |
2891 | int force_singlebyte = 0; | |
078e7b4a | 2892 | int cancel = 0; |
5150eeec | 2893 | int nchars = 0; |
078e7b4a JB |
2894 | |
2895 | while ((c = READCHAR) >= 0 | |
2896 | && c != '\"') | |
2897 | { | |
449fea39 | 2898 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2899 | { |
5d65df0d GM |
2900 | int offset = p - read_buffer; |
2901 | read_buffer = (char *) xrealloc (read_buffer, | |
2902 | read_buffer_size *= 2); | |
2903 | p = read_buffer + offset; | |
078e7b4a JB |
2904 | end = read_buffer + read_buffer_size; |
2905 | } | |
bed23cb2 | 2906 | |
078e7b4a | 2907 | if (c == '\\') |
03e88613 | 2908 | { |
1571601b | 2909 | int modifiers; |
f6f79b37 | 2910 | |
8792be66 | 2911 | c = read_escape (readcharfun, 1); |
bed23cb2 RS |
2912 | |
2913 | /* C is -1 if \ newline has just been seen */ | |
2914 | if (c == -1) | |
03e88613 | 2915 | { |
bed23cb2 RS |
2916 | if (p == read_buffer) |
2917 | cancel = 1; | |
03e88613 RS |
2918 | continue; |
2919 | } | |
bed23cb2 | 2920 | |
1571601b KH |
2921 | modifiers = c & CHAR_MODIFIER_MASK; |
2922 | c = c & ~CHAR_MODIFIER_MASK; | |
2923 | ||
8792be66 | 2924 | if (CHAR_BYTE8_P (c)) |
e7fc914b | 2925 | force_singlebyte = 1; |
8792be66 | 2926 | else if (! ASCII_CHAR_P (c)) |
f6f79b37 | 2927 | force_multibyte = 1; |
8792be66 | 2928 | else /* i.e. ASCII_CHAR_P (c) */ |
1571601b KH |
2929 | { |
2930 | /* Allow `\C- ' and `\C-?'. */ | |
2931 | if (modifiers == CHAR_CTL) | |
2932 | { | |
2933 | if (c == ' ') | |
2934 | c = 0, modifiers = 0; | |
2935 | else if (c == '?') | |
2936 | c = 127, modifiers = 0; | |
2937 | } | |
2938 | if (modifiers & CHAR_SHIFT) | |
2939 | { | |
2940 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2941 | if (c >= 'A' && c <= 'Z') | |
2942 | modifiers &= ~CHAR_SHIFT; | |
2943 | else if (c >= 'a' && c <= 'z') | |
2944 | c -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
2945 | } | |
2946 | ||
2947 | if (modifiers & CHAR_META) | |
2948 | { | |
2949 | /* Move the meta bit to the right place for a | |
2950 | string. */ | |
2951 | modifiers &= ~CHAR_META; | |
2952 | c = BYTE8_TO_CHAR (c | 0x80); | |
2953 | force_singlebyte = 1; | |
2954 | } | |
2955 | } | |
5150eeec | 2956 | |
1571601b KH |
2957 | /* Any modifiers remaining are invalid. */ |
2958 | if (modifiers) | |
2959 | error ("Invalid modifier in string"); | |
2960 | p += CHAR_STRING (c, (unsigned char *) p); | |
078e7b4a | 2961 | } |
8792be66 | 2962 | else |
5150eeec | 2963 | { |
1571601b | 2964 | p += CHAR_STRING (c, (unsigned char *) p); |
988f7a0c KH |
2965 | if (CHAR_BYTE8_P (c)) |
2966 | force_singlebyte = 1; | |
2967 | else if (! ASCII_CHAR_P (c)) | |
2968 | force_multibyte = 1; | |
f943104a | 2969 | } |
5150eeec | 2970 | nchars++; |
078e7b4a | 2971 | } |
5150eeec | 2972 | |
6f7f43d5 | 2973 | if (c < 0) |
9c97398c | 2974 | end_of_file_error (); |
078e7b4a JB |
2975 | |
2976 | /* If purifying, and string starts with \ newline, | |
2977 | return zero instead. This is for doc strings | |
08564963 | 2978 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2979 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2980 | return make_number (0); |
2981 | ||
1571601b KH |
2982 | if (force_multibyte) |
2983 | /* READ_BUFFER already contains valid multibyte forms. */ | |
5150eeec | 2984 | ; |
1571601b | 2985 | else if (force_singlebyte) |
a742d646 | 2986 | { |
1571601b KH |
2987 | nchars = str_as_unibyte (read_buffer, p - read_buffer); |
2988 | p = read_buffer + nchars; | |
a742d646 | 2989 | } |
e28552a4 | 2990 | else |
1571601b | 2991 | /* Otherwise, READ_BUFFER contains only ASCII. */ |
5150eeec | 2992 | ; |
e7fc914b | 2993 | |
abb13b09 CW |
2994 | /* We want readchar_count to be the number of characters, not |
2995 | bytes. Hence we adjust for multibyte characters in the | |
2996 | string. ... But it doesn't seem to be necessary, because | |
2997 | READCHAR *does* read multibyte characters from buffers. */ | |
2998 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2999 | if (read_pure) |
491f16a2 | 3000 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
3001 | (force_multibyte |
3002 | || (p - read_buffer != nchars))); | |
491f16a2 | 3003 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
3004 | (force_multibyte |
3005 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
3006 | } |
3007 | ||
109d300c JB |
3008 | case '.': |
3009 | { | |
109d300c JB |
3010 | int next_char = READCHAR; |
3011 | UNREAD (next_char); | |
3012 | ||
035eec48 | 3013 | if (next_char <= 040 |
e613ea97 | 3014 | || (next_char < 0200 |
8966b757 | 3015 | && (strchr ("\"';([#?", next_char) |
95af0924 KS |
3016 | || (!first_in_list && next_char == '`') |
3017 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 3018 | { |
6428369f KH |
3019 | *pch = c; |
3020 | return Qnil; | |
109d300c JB |
3021 | } |
3022 | ||
3023 | /* Otherwise, we fall through! Note that the atom-reading loop | |
3024 | below will now loop at least once, assuring that we will not | |
3025 | try to UNREAD two characters in a row. */ | |
3026 | } | |
078e7b4a | 3027 | default: |
17634846 | 3028 | default_label: |
88852d45 | 3029 | if (c <= 040) goto retry; |
adef3de7 RS |
3030 | if (c == 0x8a0) /* NBSP */ |
3031 | goto retry; | |
078e7b4a | 3032 | { |
38404229 | 3033 | char *p = read_buffer; |
481c6336 | 3034 | int quoted = 0; |
078e7b4a JB |
3035 | |
3036 | { | |
38404229 | 3037 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 3038 | |
6f7f43d5 | 3039 | while (c > 040 |
adef3de7 | 3040 | && c != 0x8a0 /* NBSP */ |
e613ea97 | 3041 | && (c >= 0200 |
8966b757 | 3042 | || (!strchr ("\"';()[]#", c) |
e613ea97 KH |
3043 | && !(!first_in_list && c == '`') |
3044 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 3045 | { |
449fea39 | 3046 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 3047 | { |
5d65df0d GM |
3048 | int offset = p - read_buffer; |
3049 | read_buffer = (char *) xrealloc (read_buffer, | |
3050 | read_buffer_size *= 2); | |
3051 | p = read_buffer + offset; | |
078e7b4a JB |
3052 | end = read_buffer + read_buffer_size; |
3053 | } | |
177c0ea7 | 3054 | |
078e7b4a | 3055 | if (c == '\\') |
481c6336 RS |
3056 | { |
3057 | c = READCHAR; | |
4ab11c09 GM |
3058 | if (c == -1) |
3059 | end_of_file_error (); | |
481c6336 RS |
3060 | quoted = 1; |
3061 | } | |
6f7f43d5 | 3062 | |
1202434b KH |
3063 | if (multibyte) |
3064 | p += CHAR_STRING (c, p); | |
3065 | else | |
3066 | *p++ = c; | |
078e7b4a JB |
3067 | c = READCHAR; |
3068 | } | |
3069 | ||
3070 | if (p == end) | |
3071 | { | |
5d65df0d GM |
3072 | int offset = p - read_buffer; |
3073 | read_buffer = (char *) xrealloc (read_buffer, | |
3074 | read_buffer_size *= 2); | |
3075 | p = read_buffer + offset; | |
3076 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
3077 | } |
3078 | *p = 0; | |
3079 | if (c >= 0) | |
3080 | UNREAD (c); | |
3081 | } | |
3082 | ||
4ad679f9 | 3083 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
3084 | { |
3085 | register char *p1; | |
481c6336 RS |
3086 | p1 = read_buffer; |
3087 | if (*p1 == '+' || *p1 == '-') p1++; | |
3088 | /* Is it an integer? */ | |
3089 | if (p1 != p) | |
3090 | { | |
3091 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
3092 | /* Integers can have trailing decimal points. */ |
3093 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
3094 | if (p1 == p) |
3095 | /* It is an integer. */ | |
3096 | { | |
481c6336 RS |
3097 | if (p1[-1] == '.') |
3098 | p1[-1] = '\0'; | |
155a6764 SM |
3099 | { |
3100 | /* EMACS_INT n = atol (read_buffer); */ | |
3101 | char *endptr = NULL; | |
3102 | EMACS_INT n = (errno = 0, | |
3103 | strtol (read_buffer, &endptr, 10)); | |
3104 | if (errno == ERANGE && endptr) | |
3105 | { | |
3106 | Lisp_Object args | |
3107 | = Fcons (make_string (read_buffer, | |
3108 | endptr - read_buffer), | |
3109 | Qnil); | |
3110 | xsignal (Qoverflow_error, args); | |
3111 | } | |
3112 | return make_fixnum_or_float (n); | |
3113 | } | |
481c6336 RS |
3114 | } |
3115 | } | |
be95bee9 | 3116 | if (isfloat_string (read_buffer, 0)) |
eb659c41 | 3117 | { |
a8972052 PE |
3118 | /* Compute NaN and infinities using 0.0 in a variable, |
3119 | to cope with compilers that think they are smarter | |
5e24a1f7 | 3120 | than we are. */ |
3c329963 | 3121 | double zero = 0.0; |
a8972052 PE |
3122 | |
3123 | double value; | |
3124 | ||
3125 | /* Negate the value ourselves. This treats 0, NaNs, | |
3126 | and infinity properly on IEEE floating point hosts, | |
3127 | and works around a common bug where atof ("-0.0") | |
3128 | drops the sign. */ | |
3129 | int negative = read_buffer[0] == '-'; | |
3130 | ||
3131 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 3132 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 3133 | switch (p[-1]) |
eb659c41 | 3134 | { |
a8972052 PE |
3135 | case 'F': |
3136 | value = 1.0 / zero; | |
3137 | break; | |
3138 | case 'N': | |
3139 | value = zero / zero; | |
7690cbb0 RS |
3140 | |
3141 | /* If that made a "negative" NaN, negate it. */ | |
3142 | ||
3143 | { | |
3144 | int i; | |
3145 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
3146 | ||
3147 | u_data.d = value; | |
3148 | u_minus_zero.d = - 0.0; | |
3149 | for (i = 0; i < sizeof (double); i++) | |
3150 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3151 | { | |
3152 | value = - value; | |
3153 | break; | |
3154 | } | |
3155 | } | |
3156 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
3157 | break; |
3158 | default: | |
3159 | value = atof (read_buffer + negative); | |
3160 | break; | |
eb659c41 | 3161 | } |
a8972052 PE |
3162 | |
3163 | return make_float (negative ? - value : value); | |
eb659c41 | 3164 | } |
481c6336 | 3165 | } |
abb13b09 | 3166 | { |
e93abe3d KH |
3167 | Lisp_Object name, result; |
3168 | EMACS_INT nbytes = p - read_buffer; | |
3169 | EMACS_INT nchars | |
3170 | = (multibyte ? multibyte_chars_in_text (read_buffer, nbytes) | |
3171 | : nbytes); | |
3172 | ||
3173 | if (uninterned_symbol && ! NILP (Vpurify_flag)) | |
3174 | name = make_pure_string (read_buffer, nchars, nbytes, multibyte); | |
3175 | else | |
3176 | name = make_specified_string (read_buffer, nchars, nbytes,multibyte); | |
3177 | result = (uninterned_symbol ? Fmake_symbol (name) | |
3178 | : Fintern (name, Qnil)); | |
1202434b | 3179 | |
abb13b09 CW |
3180 | if (EQ (Vread_with_symbol_positions, Qt) |
3181 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 3182 | Vread_symbol_positions_list = |
abb13b09 CW |
3183 | /* Kind of a hack; this will probably fail if characters |
3184 | in the symbol name were escaped. Not really a big | |
3185 | deal, though. */ | |
f74db720 SM |
3186 | Fcons (Fcons (result, |
3187 | make_number (readchar_count | |
3188 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
3189 | Vread_symbol_positions_list); |
3190 | return result; | |
3191 | } | |
078e7b4a JB |
3192 | } |
3193 | } | |
3194 | } | |
3195 | \f | |
9e062b6c RS |
3196 | |
3197 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
3198 | static Lisp_Object seen_list; | |
3199 | ||
3200 | static void | |
971de7fb | 3201 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
3202 | { |
3203 | Lisp_Object check_object; | |
3204 | ||
3205 | /* We haven't seen any objects when we start. */ | |
3206 | seen_list = Qnil; | |
3207 | ||
3208 | /* Make all the substitutions. */ | |
3209 | check_object | |
3210 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3211 | |
9e062b6c RS |
3212 | /* Clear seen_list because we're done with it. */ |
3213 | seen_list = Qnil; | |
3214 | ||
3215 | /* The returned object here is expected to always eq the | |
3216 | original. */ | |
3217 | if (!EQ (check_object, object)) | |
3218 | error ("Unexpected mutation error in reader"); | |
3219 | } | |
3220 | ||
3221 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
7a3d90dc SM |
3222 | #define SUBSTITUTE(get_val, set_val) \ |
3223 | do { \ | |
3224 | Lisp_Object old_value = get_val; \ | |
3225 | Lisp_Object true_value \ | |
3226 | = substitute_object_recurse (object, placeholder, \ | |
3227 | old_value); \ | |
3228 | \ | |
3229 | if (!EQ (old_value, true_value)) \ | |
3230 | { \ | |
3231 | set_val; \ | |
3232 | } \ | |
3233 | } while (0) | |
9e062b6c RS |
3234 | |
3235 | static Lisp_Object | |
971de7fb | 3236 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c RS |
3237 | { |
3238 | /* If we find the placeholder, return the target object. */ | |
3239 | if (EQ (placeholder, subtree)) | |
3240 | return object; | |
3241 | ||
3242 | /* If we've been to this node before, don't explore it again. */ | |
3243 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
3244 | return subtree; | |
3245 | ||
3246 | /* If this node can be the entry point to a cycle, remember that | |
3247 | we've seen it. It can only be such an entry point if it was made | |
3248 | by #n=, which means that we can find it as a value in | |
3249 | read_objects. */ | |
3250 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3251 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3252 | |
9e062b6c RS |
3253 | /* Recurse according to subtree's type. |
3254 | Every branch must return a Lisp_Object. */ | |
3255 | switch (XTYPE (subtree)) | |
3256 | { | |
3257 | case Lisp_Vectorlike: | |
3258 | { | |
7a3d90dc SM |
3259 | int i, length = 0; |
3260 | if (BOOL_VECTOR_P (subtree)) | |
3261 | return subtree; /* No sub-objects anyway. */ | |
3262 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
3263 | || COMPILEDP (subtree)) | |
3264 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; | |
3265 | else if (VECTORP (subtree)) | |
3266 | length = ASIZE (subtree); | |
3267 | else | |
3268 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3269 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3270 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3271 | behavior. */ |
3272 | wrong_type_argument (Qsequencep, subtree); | |
3273 | ||
9e062b6c | 3274 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3275 | SUBSTITUTE (AREF (subtree, i), |
3276 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3277 | return subtree; |
3278 | } | |
3279 | ||
3280 | case Lisp_Cons: | |
3281 | { | |
7a3d90dc SM |
3282 | SUBSTITUTE (XCAR (subtree), |
3283 | XSETCAR (subtree, true_value)); | |
3284 | SUBSTITUTE (XCDR (subtree), | |
3285 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3286 | return subtree; |
3287 | } | |
3288 | ||
9e062b6c RS |
3289 | case Lisp_String: |
3290 | { | |
3291 | /* Check for text properties in each interval. | |
e61b9b87 | 3292 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3293 | |
d5db4077 | 3294 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 3295 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 3296 | |
0d74b006 SM |
3297 | traverse_intervals_noorder (root_interval, |
3298 | &substitute_in_interval, arg); | |
9e062b6c RS |
3299 | |
3300 | return subtree; | |
3301 | } | |
9e062b6c RS |
3302 | |
3303 | /* Other types don't recurse any further. */ | |
3304 | default: | |
3305 | return subtree; | |
3306 | } | |
3307 | } | |
3308 | ||
3309 | /* Helper function for substitute_object_recurse. */ | |
3310 | static void | |
971de7fb | 3311 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3312 | { |
3313 | Lisp_Object object = Fcar (arg); | |
3314 | Lisp_Object placeholder = Fcdr (arg); | |
3315 | ||
9735b9ce | 3316 | SUBSTITUTE (interval->plist, interval->plist = true_value); |
9e062b6c RS |
3317 | } |
3318 | ||
3319 | \f | |
078e7b4a JB |
3320 | #define LEAD_INT 1 |
3321 | #define DOT_CHAR 2 | |
3322 | #define TRAIL_INT 4 | |
3323 | #define E_CHAR 8 | |
3324 | #define EXP_INT 16 | |
3325 | ||
3326 | int | |
a8fe7202 | 3327 | isfloat_string (const char *cp, int ignore_trailing) |
078e7b4a | 3328 | { |
a8fe7202 AS |
3329 | int state; |
3330 | const char *start = cp; | |
d8578e58 | 3331 | |
078e7b4a JB |
3332 | state = 0; |
3333 | if (*cp == '+' || *cp == '-') | |
3334 | cp++; | |
3335 | ||
075027b1 | 3336 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3337 | { |
3338 | state |= LEAD_INT; | |
075027b1 RS |
3339 | while (*cp >= '0' && *cp <= '9') |
3340 | cp++; | |
078e7b4a JB |
3341 | } |
3342 | if (*cp == '.') | |
3343 | { | |
3344 | state |= DOT_CHAR; | |
3345 | cp++; | |
3346 | } | |
075027b1 | 3347 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3348 | { |
3349 | state |= TRAIL_INT; | |
075027b1 | 3350 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3351 | cp++; |
3352 | } | |
a35f88bf | 3353 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
3354 | { |
3355 | state |= E_CHAR; | |
3356 | cp++; | |
e73997a1 RS |
3357 | if (*cp == '+' || *cp == '-') |
3358 | cp++; | |
078e7b4a | 3359 | } |
078e7b4a | 3360 | |
075027b1 | 3361 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3362 | { |
3363 | state |= EXP_INT; | |
075027b1 | 3364 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
3365 | cp++; |
3366 | } | |
d8578e58 RS |
3367 | else if (cp == start) |
3368 | ; | |
eb659c41 RS |
3369 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3370 | { | |
3371 | state |= EXP_INT; | |
3372 | cp += 3; | |
3373 | } | |
3374 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3375 | { | |
3376 | state |= EXP_INT; | |
3377 | cp += 3; | |
3378 | } | |
3379 | ||
be95bee9 | 3380 | return ((ignore_trailing |
a8fe7202 AS |
3381 | || *cp == 0 || *cp == ' ' || *cp == '\t' || *cp == '\n' |
3382 | || *cp == '\r' || *cp == '\f') | |
078e7b4a | 3383 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3384 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3385 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3386 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3387 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3388 | } |
cc94f3b2 | 3389 | |
078e7b4a JB |
3390 | \f |
3391 | static Lisp_Object | |
0ee81a0c | 3392 | read_vector (Lisp_Object readcharfun, int read_funvec) |
078e7b4a JB |
3393 | { |
3394 | register int i; | |
3395 | register int size; | |
3396 | register Lisp_Object *ptr; | |
c15cfd1f | 3397 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3398 | register struct Lisp_Cons *otem; |
3399 | Lisp_Object len; | |
b9598260 SM |
3400 | /* If we're reading a funvec object we start out assuming it's also a |
3401 | byte-code object (a subset of funvecs), so we can do any special | |
3402 | processing needed. If it's just an ordinary funvec object, we'll | |
3403 | realize that as soon as we've read the first element. */ | |
3404 | int read_bytecode = read_funvec; | |
078e7b4a JB |
3405 | |
3406 | tem = read_list (1, readcharfun); | |
3407 | len = Flength (tem); | |
3408 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3409 | ||
078e7b4a JB |
3410 | size = XVECTOR (vector)->size; |
3411 | ptr = XVECTOR (vector)->contents; | |
3412 | for (i = 0; i < size; i++) | |
3413 | { | |
c15cfd1f | 3414 | item = Fcar (tem); |
b9598260 SM |
3415 | |
3416 | /* If READ_BYTECODE is set, check whether this is really a byte-code | |
3417 | object, or just an ordinary `funvec' object -- non-byte-code | |
3418 | funvec objects use the same reader syntax. We can tell from the | |
3419 | first element which one it is. */ | |
3420 | if (read_bytecode && i == 0 && ! FUNVEC_COMPILED_TAG_P (item)) | |
3421 | read_bytecode = 0; /* Nope. */ | |
3422 | ||
c15cfd1f RS |
3423 | /* If `load-force-doc-strings' is t when reading a lazily-loaded |
3424 | bytecode object, the docstring containing the bytecode and | |
3425 | constants values must be treated as unibyte and passed to | |
3426 | Fread, to get the actual bytecode string and constants vector. */ | |
b9598260 | 3427 | if (read_bytecode && load_force_doc_strings) |
c15cfd1f RS |
3428 | { |
3429 | if (i == COMPILED_BYTECODE) | |
3430 | { | |
3431 | if (!STRINGP (item)) | |
6fa2b890 | 3432 | error ("Invalid byte code"); |
c15cfd1f RS |
3433 | |
3434 | /* Delay handling the bytecode slot until we know whether | |
3435 | it is lazily-loaded (we can tell by whether the | |
3436 | constants slot is nil). */ | |
3437 | ptr[COMPILED_CONSTANTS] = item; | |
3438 | item = Qnil; | |
3439 | } | |
3440 | else if (i == COMPILED_CONSTANTS) | |
3441 | { | |
3442 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3443 | ||
3444 | if (NILP (item)) | |
3445 | { | |
3446 | /* Coerce string to unibyte (like string-as-unibyte, | |
3447 | but without generating extra garbage and | |
3448 | guaranteeing no change in the contents). */ | |
bee91904 | 3449 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3450 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3451 | |
8792be66 | 3452 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3453 | if (!CONSP (item)) |
6fa2b890 | 3454 | error ("Invalid byte code"); |
c15cfd1f RS |
3455 | |
3456 | otem = XCONS (item); | |
c1d497be KR |
3457 | bytestr = XCAR (item); |
3458 | item = XCDR (item); | |
c15cfd1f RS |
3459 | free_cons (otem); |
3460 | } | |
3461 | ||
3462 | /* Now handle the bytecode slot. */ | |
3463 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3464 | } | |
8792be66 KH |
3465 | else if (i == COMPILED_DOC_STRING |
3466 | && STRINGP (item) | |
3467 | && ! STRING_MULTIBYTE (item)) | |
3468 | { | |
3469 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3470 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3471 | else | |
3472 | item = Fstring_as_multibyte (item); | |
3473 | } | |
c15cfd1f RS |
3474 | } |
3475 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3476 | otem = XCONS (tem); |
3477 | tem = Fcdr (tem); | |
3478 | free_cons (otem); | |
3479 | } | |
b9598260 SM |
3480 | |
3481 | if (read_bytecode && size >= 4) | |
3482 | /* Convert this vector to a bytecode object. */ | |
3483 | vector = Fmake_byte_code (size, XVECTOR (vector)->contents); | |
3484 | else if (read_funvec && size >= 1) | |
3485 | /* Convert this vector to an ordinary funvec object. */ | |
3486 | XSETFUNVEC (vector, XVECTOR (vector)); | |
3487 | ||
078e7b4a JB |
3488 | return vector; |
3489 | } | |
177c0ea7 | 3490 | |
6f7f43d5 RS |
3491 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3492 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3493 | and make structure pure. */ |
3494 | ||
3495 | static Lisp_Object | |
971de7fb | 3496 | read_list (int flag, register Lisp_Object readcharfun) |
078e7b4a JB |
3497 | { |
3498 | /* -1 means check next element for defun, | |
3499 | 0 means don't check, | |
3500 | 1 means already checked and found defun. */ | |
3501 | int defunflag = flag < 0 ? -1 : 0; | |
3502 | Lisp_Object val, tail; | |
3503 | register Lisp_Object elt, tem; | |
3504 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3505 | /* 0 is the normal case. |
b2a30870 | 3506 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3507 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3508 | int doc_reference = 0; |
078e7b4a | 3509 | |
17634846 RS |
3510 | /* Initialize this to 1 if we are reading a list. */ |
3511 | int first_in_list = flag <= 0; | |
3512 | ||
078e7b4a JB |
3513 | val = Qnil; |
3514 | tail = Qnil; | |
3515 | ||
3516 | while (1) | |
3517 | { | |
e28552a4 | 3518 | int ch; |
078e7b4a | 3519 | GCPRO2 (val, tail); |
17634846 | 3520 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3521 | UNGCPRO; |
20ea2964 | 3522 | |
17634846 RS |
3523 | first_in_list = 0; |
3524 | ||
821d417e | 3525 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3526 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3527 | && ! NILP (elt) |
821d417e RS |
3528 | && !NILP (Vpurify_flag)) |
3529 | { | |
3530 | if (NILP (Vdoc_file_name)) | |
3531 | /* We have not yet called Snarf-documentation, so assume | |
3532 | this file is described in the DOC-MM.NN file | |
3533 | and Snarf-documentation will fill in the right value later. | |
3534 | For now, replace the whole list with 0. */ | |
3535 | doc_reference = 1; | |
3536 | else | |
3537 | /* We have already called Snarf-documentation, so make a relative | |
3538 | file name for this file, so it can be found properly | |
3539 | in the installed Lisp directory. | |
3540 | We don't use Fexpand_file_name because that would make | |
3541 | the directory absolute now. */ | |
3542 | elt = concat2 (build_string ("../lisp/"), | |
3543 | Ffile_name_nondirectory (elt)); | |
3544 | } | |
b2a30870 | 3545 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3546 | && ! NILP (elt) |
b2a30870 RS |
3547 | && load_force_doc_strings) |
3548 | doc_reference = 2; | |
20ea2964 | 3549 | |
6428369f | 3550 | if (ch) |
078e7b4a JB |
3551 | { |
3552 | if (flag > 0) | |
3553 | { | |
6428369f | 3554 | if (ch == ']') |
078e7b4a | 3555 | return val; |
336d4a9c | 3556 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3557 | } |
6428369f | 3558 | if (ch == ')') |
078e7b4a | 3559 | return val; |
6428369f | 3560 | if (ch == '.') |
078e7b4a JB |
3561 | { |
3562 | GCPRO2 (val, tail); | |
265a9e55 | 3563 | if (!NILP (tail)) |
f5df591a | 3564 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3565 | else |
3566 | val = read0 (readcharfun); | |
17634846 | 3567 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3568 | UNGCPRO; |
6428369f | 3569 | if (ch == ')') |
821d417e RS |
3570 | { |
3571 | if (doc_reference == 1) | |
3572 | return make_number (0); | |
b2a30870 RS |
3573 | if (doc_reference == 2) |
3574 | { | |
3575 | /* Get a doc string from the file we are loading. | |
8792be66 KH |
3576 | If it's in saved_doc_string, get it from there. |
3577 | ||
3578 | Here, we don't know if the string is a | |
3579 | bytecode string or a doc string. As a | |
3580 | bytecode string must be unibyte, we always | |
3581 | return a unibyte string. If it is actually a | |
3582 | doc string, caller must make it | |
3583 | multibyte. */ | |
8f924df7 | 3584 | |
c1d497be | 3585 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3586 | /* Position is negative for user variables. */ |
3587 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3588 | if (pos >= saved_doc_string_position |
3589 | && pos < (saved_doc_string_position | |
3590 | + saved_doc_string_length)) | |
3591 | { | |
3592 | int start = pos - saved_doc_string_position; | |
3593 | int from, to; | |
3594 | ||
3595 | /* Process quoting with ^A, | |
3596 | and find the end of the string, | |
3597 | which is marked with ^_ (037). */ | |
3598 | for (from = start, to = start; | |
3599 | saved_doc_string[from] != 037;) | |
3600 | { | |
3601 | int c = saved_doc_string[from++]; | |
3602 | if (c == 1) | |
3603 | { | |
3604 | c = saved_doc_string[from++]; | |
3605 | if (c == 1) | |
3606 | saved_doc_string[to++] = c; | |
3607 | else if (c == '0') | |
3608 | saved_doc_string[to++] = 0; | |
3609 | else if (c == '_') | |
3610 | saved_doc_string[to++] = 037; | |
3611 | } | |
3612 | else | |
3613 | saved_doc_string[to++] = c; | |
3614 | } | |
3615 | ||
8792be66 KH |
3616 | return make_unibyte_string (saved_doc_string + start, |
3617 | to - start); | |
b2a30870 | 3618 | } |
c15cfd1f RS |
3619 | /* Look in prev_saved_doc_string the same way. */ |
3620 | else if (pos >= prev_saved_doc_string_position | |
3621 | && pos < (prev_saved_doc_string_position | |
3622 | + prev_saved_doc_string_length)) | |
3623 | { | |
3624 | int start = pos - prev_saved_doc_string_position; | |
3625 | int from, to; | |
3626 | ||
3627 | /* Process quoting with ^A, | |
3628 | and find the end of the string, | |
3629 | which is marked with ^_ (037). */ | |
3630 | for (from = start, to = start; | |
3631 | prev_saved_doc_string[from] != 037;) | |
3632 | { | |
3633 | int c = prev_saved_doc_string[from++]; | |
3634 | if (c == 1) | |
3635 | { | |
3636 | c = prev_saved_doc_string[from++]; | |
3637 | if (c == 1) | |
3638 | prev_saved_doc_string[to++] = c; | |
3639 | else if (c == '0') | |
3640 | prev_saved_doc_string[to++] = 0; | |
3641 | else if (c == '_') | |
3642 | prev_saved_doc_string[to++] = 037; | |
3643 | } | |
3644 | else | |
3645 | prev_saved_doc_string[to++] = c; | |
3646 | } | |
3647 | ||
8792be66 KH |
3648 | return make_unibyte_string (prev_saved_doc_string |
3649 | + start, | |
3650 | to - start); | |
c15cfd1f | 3651 | } |
b2a30870 | 3652 | else |
8792be66 | 3653 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3654 | } |
3655 | ||
821d417e RS |
3656 | return val; |
3657 | } | |
336d4a9c | 3658 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3659 | } |
336d4a9c | 3660 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3661 | } |
3662 | tem = (read_pure && flag <= 0 | |
3663 | ? pure_cons (elt, Qnil) | |
3664 | : Fcons (elt, Qnil)); | |
265a9e55 | 3665 | if (!NILP (tail)) |
f5df591a | 3666 | XSETCDR (tail, tem); |
078e7b4a JB |
3667 | else |
3668 | val = tem; | |
3669 | tail = tem; | |
3670 | if (defunflag < 0) | |
3671 | defunflag = EQ (elt, Qdefun); | |
3672 | else if (defunflag > 0) | |
3673 | read_pure = 1; | |
3674 | } | |
3675 | } | |
3676 | \f | |
3677 | Lisp_Object Vobarray; | |
3678 | Lisp_Object initial_obarray; | |
3679 | ||
d007f5c8 RS |
3680 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3681 | ||
3682 | int oblookup_last_bucket_number; | |
3683 | ||
971de7fb | 3684 | static int hash_string (const unsigned char *ptr, int len); |
d007f5c8 RS |
3685 | |
3686 | /* Get an error if OBARRAY is not an obarray. | |
3687 | If it is one, return it. */ | |
3688 | ||
078e7b4a | 3689 | Lisp_Object |
971de7fb | 3690 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3691 | { |
8878319c | 3692 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3693 | { |
3694 | /* If Vobarray is now invalid, force it to be valid. */ | |
3695 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3696 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3697 | } |
3698 | return obarray; | |
3699 | } | |
3700 | ||
d007f5c8 RS |
3701 | /* Intern the C string STR: return a symbol with that name, |
3702 | interned in the current obarray. */ | |
078e7b4a JB |
3703 | |
3704 | Lisp_Object | |
971de7fb | 3705 | intern (const char *str) |
078e7b4a JB |
3706 | { |
3707 | Lisp_Object tem; | |
3708 | int len = strlen (str); | |
153a17b7 | 3709 | Lisp_Object obarray; |
078e7b4a | 3710 | |
153a17b7 | 3711 | obarray = Vobarray; |
cfff016d | 3712 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3713 | obarray = check_obarray (obarray); |
e28552a4 | 3714 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3715 | if (SYMBOLP (tem)) |
078e7b4a | 3716 | return tem; |
87631ef7 | 3717 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3718 | } |
4ad679f9 | 3719 | |
5e2327cf DN |
3720 | Lisp_Object |
3721 | intern_c_string (const char *str) | |
3722 | { | |
3723 | Lisp_Object tem; | |
3724 | int len = strlen (str); | |
3725 | Lisp_Object obarray; | |
3726 | ||
3727 | obarray = Vobarray; | |
3728 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) | |
3729 | obarray = check_obarray (obarray); | |
3730 | tem = oblookup (obarray, str, len, len); | |
3731 | if (SYMBOLP (tem)) | |
3732 | return tem; | |
3733 | ||
3734 | if (NILP (Vpurify_flag)) | |
3735 | /* Creating a non-pure string from a string literal not | |
3736 | implemented yet. We could just use make_string here and live | |
3737 | with the extra copy. */ | |
3738 | abort (); | |
3739 | ||
3740 | return Fintern (make_pure_c_string (str), obarray); | |
3741 | } | |
3742 | ||
4ad679f9 EN |
3743 | /* Create an uninterned symbol with name STR. */ |
3744 | ||
3745 | Lisp_Object | |
a8fe7202 | 3746 | make_symbol (const char *str) |
4ad679f9 EN |
3747 | { |
3748 | int len = strlen (str); | |
3749 | ||
a8fe7202 AS |
3750 | return Fmake_symbol (!NILP (Vpurify_flag) |
3751 | ? make_pure_string (str, len, len, 0) | |
3752 | : make_string (str, len)); | |
4ad679f9 | 3753 | } |
d007f5c8 | 3754 | \f |
078e7b4a | 3755 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3756 | doc: /* Return the canonical symbol whose name is STRING. |
3757 | If there is none, one is created by this function and returned. | |
3758 | A second optional argument specifies the obarray to use; | |
3759 | it defaults to the value of `obarray'. */) | |
5842a27b | 3760 | (Lisp_Object string, Lisp_Object obarray) |
078e7b4a JB |
3761 | { |
3762 | register Lisp_Object tem, sym, *ptr; | |
3763 | ||
265a9e55 | 3764 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3765 | obarray = check_obarray (obarray); |
3766 | ||
b7826503 | 3767 | CHECK_STRING (string); |
078e7b4a | 3768 | |
d5db4077 KR |
3769 | tem = oblookup (obarray, SDATA (string), |
3770 | SCHARS (string), | |
3771 | SBYTES (string)); | |
cfff016d | 3772 | if (!INTEGERP (tem)) |
078e7b4a JB |
3773 | return tem; |
3774 | ||
265a9e55 | 3775 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3776 | string = Fpurecopy (string); |
3777 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3778 | |
3779 | if (EQ (obarray, initial_obarray)) | |
3780 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3781 | else | |
3782 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3783 | |
d5db4077 | 3784 | if ((SREF (string, 0) == ':') |
a458d45d | 3785 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3786 | { |
3787 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3788 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3789 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3790 | } |
a0549832 | 3791 | |
078e7b4a | 3792 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3793 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3794 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3795 | else | |
3796 | XSYMBOL (sym)->next = 0; | |
3797 | *ptr = sym; | |
3798 | return sym; | |
3799 | } | |
3800 | ||
3801 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3802 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3803 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3804 | symbol is searched for. | |
3805 | A second optional argument specifies the obarray to use; | |
3806 | it defaults to the value of `obarray'. */) | |
5842a27b | 3807 | (Lisp_Object name, Lisp_Object obarray) |
078e7b4a | 3808 | { |
c2d47f4b | 3809 | register Lisp_Object tem, string; |
078e7b4a | 3810 | |
265a9e55 | 3811 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3812 | obarray = check_obarray (obarray); |
3813 | ||
b55048d4 GM |
3814 | if (!SYMBOLP (name)) |
3815 | { | |
b7826503 | 3816 | CHECK_STRING (name); |
c2d47f4b | 3817 | string = name; |
b55048d4 GM |
3818 | } |
3819 | else | |
c2d47f4b | 3820 | string = SYMBOL_NAME (name); |
078e7b4a | 3821 | |
c2d47f4b | 3822 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3823 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3824 | return Qnil; | |
3825 | else | |
078e7b4a | 3826 | return tem; |
078e7b4a | 3827 | } |
d007f5c8 RS |
3828 | \f |
3829 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3830 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3831 | The value is t if a symbol was found and deleted, nil otherwise. | |
3832 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3833 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3834 | OBARRAY defaults to the value of the variable `obarray'. */) | |
5842a27b | 3835 | (Lisp_Object name, Lisp_Object obarray) |
d007f5c8 RS |
3836 | { |
3837 | register Lisp_Object string, tem; | |
3838 | int hash; | |
3839 | ||
3840 | if (NILP (obarray)) obarray = Vobarray; | |
3841 | obarray = check_obarray (obarray); | |
3842 | ||
3843 | if (SYMBOLP (name)) | |
d4c83cae | 3844 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3845 | else |
3846 | { | |
b7826503 | 3847 | CHECK_STRING (name); |
d007f5c8 RS |
3848 | string = name; |
3849 | } | |
3850 | ||
d5db4077 KR |
3851 | tem = oblookup (obarray, SDATA (string), |
3852 | SCHARS (string), | |
3853 | SBYTES (string)); | |
d007f5c8 RS |
3854 | if (INTEGERP (tem)) |
3855 | return Qnil; | |
3856 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3857 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3858 | return Qnil; | |
3859 | ||
8ab1650e SM |
3860 | /* There are plenty of other symbols which will screw up the Emacs |
3861 | session if we unintern them, as well as even more ways to use | |
3862 | `setq' or `fset' or whatnot to make the Emacs session | |
3863 | unusable. Let's not go down this silly road. --Stef */ | |
3864 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3865 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3866 | |
44c6c019 | 3867 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3868 | |
d007f5c8 RS |
3869 | hash = oblookup_last_bucket_number; |
3870 | ||
3871 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3872 | { |
3873 | if (XSYMBOL (tem)->next) | |
3874 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3875 | else | |
3876 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3877 | } | |
d007f5c8 RS |
3878 | else |
3879 | { | |
3880 | Lisp_Object tail, following; | |
3881 | ||
3882 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3883 | XSYMBOL (tail)->next; | |
3884 | tail = following) | |
3885 | { | |
3886 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3887 | if (EQ (following, tem)) | |
3888 | { | |
3889 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3890 | break; | |
3891 | } | |
3892 | } | |
3893 | } | |
3894 | ||
3895 | return Qt; | |
3896 | } | |
3897 | \f | |
3898 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3899 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3900 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3901 | |
3902 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3903 | |
3904 | Lisp_Object | |
971de7fb | 3905 | oblookup (Lisp_Object obarray, register const char *ptr, int size, int size_byte) |
078e7b4a | 3906 | { |
7a70b397 RS |
3907 | int hash; |
3908 | int obsize; | |
078e7b4a JB |
3909 | register Lisp_Object tail; |
3910 | Lisp_Object bucket, tem; | |
3911 | ||
cfff016d | 3912 | if (!VECTORP (obarray) |
7c79a684 | 3913 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3914 | { |
3915 | obarray = check_obarray (obarray); | |
3916 | obsize = XVECTOR (obarray)->size; | |
3917 | } | |
519418b3 RS |
3918 | /* This is sometimes needed in the middle of GC. */ |
3919 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3920 | hash = hash_string (ptr, size_byte) % obsize; |
078e7b4a | 3921 | bucket = XVECTOR (obarray)->contents[hash]; |
d007f5c8 | 3922 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3923 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3924 | ; |
cfff016d | 3925 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3926 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3927 | else |
3928 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3929 | { |
d5db4077 KR |
3930 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3931 | && SCHARS (SYMBOL_NAME (tail)) == size | |
72af86bd | 3932 | && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) |
078e7b4a JB |
3933 | return tail; |
3934 | else if (XSYMBOL (tail)->next == 0) | |
3935 | break; | |
3936 | } | |
1805de4f | 3937 | XSETINT (tem, hash); |
078e7b4a JB |
3938 | return tem; |
3939 | } | |
3940 | ||
3941 | static int | |
971de7fb | 3942 | hash_string (const unsigned char *ptr, int len) |
078e7b4a | 3943 | { |
4b2dd274 KR |
3944 | register const unsigned char *p = ptr; |
3945 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3946 | register unsigned char c; |
3947 | register int hash = 0; | |
3948 | ||
3949 | while (p != end) | |
3950 | { | |
3951 | c = *p++; | |
3952 | if (c >= 0140) c -= 40; | |
3953 | hash = ((hash<<3) + (hash>>28) + c); | |
3954 | } | |
3955 | return hash & 07777777777; | |
3956 | } | |
d007f5c8 | 3957 | \f |
078e7b4a | 3958 | void |
971de7fb | 3959 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a JB |
3960 | { |
3961 | register int i; | |
3962 | register Lisp_Object tail; | |
b7826503 | 3963 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3964 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3965 | { | |
3966 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3967 | if (SYMBOLP (tail)) |
078e7b4a JB |
3968 | while (1) |
3969 | { | |
3970 | (*fn) (tail, arg); | |
3971 | if (XSYMBOL (tail)->next == 0) | |
3972 | break; | |
1805de4f | 3973 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3974 | } |
3975 | } | |
3976 | } | |
3977 | ||
d5b28a9d | 3978 | void |
971de7fb | 3979 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3980 | { |
3981 | call1 (function, sym); | |
3982 | } | |
3983 | ||
3984 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3985 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3986 | OBARRAY defaults to the value of `obarray'. */) | |
5842a27b | 3987 | (Lisp_Object function, Lisp_Object obarray) |
078e7b4a | 3988 | { |
265a9e55 | 3989 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3990 | obarray = check_obarray (obarray); |
3991 | ||
3992 | map_obarray (obarray, mapatoms_1, function); | |
3993 | return Qnil; | |
3994 | } | |
3995 | ||
5e88a39e | 3996 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3997 | |
3998 | void | |
971de7fb | 3999 | init_obarray (void) |
078e7b4a JB |
4000 | { |
4001 | Lisp_Object oblength; | |
078e7b4a | 4002 | |
baf69866 | 4003 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 4004 | |
078e7b4a JB |
4005 | Vobarray = Fmake_vector (oblength, make_number (0)); |
4006 | initial_obarray = Vobarray; | |
4007 | staticpro (&initial_obarray); | |
078e7b4a | 4008 | |
d67b4f80 | 4009 | Qunbound = Fmake_symbol (make_pure_c_string ("unbound")); |
ce5b453a SM |
4010 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
4011 | NILP (Vpurify_flag) check in intern_c_string. */ | |
4012 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
4013 | Qnil = intern_c_string ("nil"); | |
4014 | ||
4015 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
4016 | so those two need to be fixed manally. */ | |
4017 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); | |
078e7b4a | 4018 | XSYMBOL (Qunbound)->function = Qunbound; |
ce5b453a SM |
4019 | XSYMBOL (Qunbound)->plist = Qnil; |
4020 | /* XSYMBOL (Qnil)->function = Qunbound; */ | |
4021 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); | |
4022 | XSYMBOL (Qnil)->constant = 1; | |
4023 | XSYMBOL (Qnil)->plist = Qnil; | |
078e7b4a | 4024 | |
d67b4f80 | 4025 | Qt = intern_c_string ("t"); |
ce5b453a | 4026 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
44c6c019 | 4027 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
4028 | |
4029 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
4030 | Vpurify_flag = Qt; | |
4031 | ||
d67b4f80 | 4032 | Qvariable_documentation = intern_c_string ("variable-documentation"); |
0f73bb1c | 4033 | staticpro (&Qvariable_documentation); |
078e7b4a | 4034 | |
449fea39 | 4035 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 4036 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
4037 | } |
4038 | \f | |
4039 | void | |
971de7fb | 4040 | defsubr (struct Lisp_Subr *sname) |
078e7b4a JB |
4041 | { |
4042 | Lisp_Object sym; | |
d67b4f80 | 4043 | sym = intern_c_string (sname->symbol_name); |
5a6891e2 | 4044 | XSETPVECTYPE (sname, PVEC_SUBR); |
1805de4f | 4045 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
4046 | } |
4047 | ||
4048 | #ifdef NOTDEF /* use fset in subr.el now */ | |
4049 | void | |
4050 | defalias (sname, string) | |
4051 | struct Lisp_Subr *sname; | |
4052 | char *string; | |
4053 | { | |
4054 | Lisp_Object sym; | |
4055 | sym = intern (string); | |
1805de4f | 4056 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
4057 | } |
4058 | #endif /* NOTDEF */ | |
4059 | ||
078e7b4a | 4060 | /* Define an "integer variable"; a symbol whose value is forwarded |
0f011df0 JB |
4061 | to a C variable of type int. Sample call: |
4062 | DEFVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ | |
078e7b4a | 4063 | void |
ce5b453a SM |
4064 | defvar_int (struct Lisp_Intfwd *i_fwd, |
4065 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 4066 | { |
ce5b453a | 4067 | Lisp_Object sym; |
5e2327cf | 4068 | sym = intern_c_string (namestring); |
ce5b453a SM |
4069 | i_fwd->type = Lisp_Fwd_Int; |
4070 | i_fwd->intvar = address; | |
b9598260 | 4071 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4072 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4073 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
4074 | } |
4075 | ||
f0529b5b | 4076 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 4077 | nil if address contains 0. */ |
078e7b4a | 4078 | void |
ce5b453a SM |
4079 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
4080 | const char *namestring, int *address) | |
078e7b4a | 4081 | { |
ce5b453a | 4082 | Lisp_Object sym; |
5e2327cf | 4083 | sym = intern_c_string (namestring); |
ce5b453a SM |
4084 | b_fwd->type = Lisp_Fwd_Bool; |
4085 | b_fwd->boolvar = address; | |
b9598260 | 4086 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4087 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4088 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 4089 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
4090 | } |
4091 | ||
1a0f90f7 KH |
4092 | /* Similar but define a variable whose value is the Lisp Object stored |
4093 | at address. Two versions: with and without gc-marking of the C | |
4094 | variable. The nopro version is used when that variable will be | |
4095 | gc-marked for some other reason, since marking the same slot twice | |
4096 | can cause trouble with strings. */ | |
078e7b4a | 4097 | void |
ce5b453a SM |
4098 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
4099 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4100 | { |
ce5b453a | 4101 | Lisp_Object sym; |
5e2327cf | 4102 | sym = intern_c_string (namestring); |
ce5b453a SM |
4103 | o_fwd->type = Lisp_Fwd_Obj; |
4104 | o_fwd->objvar = address; | |
b9598260 | 4105 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4106 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4107 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
4108 | } |
4109 | ||
078e7b4a | 4110 | void |
ce5b453a SM |
4111 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
4112 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4113 | { |
ce5b453a | 4114 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 4115 | staticpro (address); |
078e7b4a JB |
4116 | } |
4117 | ||
b9598260 | 4118 | |
950c215d | 4119 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 4120 | at a particular offset in the current kboard object. */ |
950c215d KH |
4121 | |
4122 | void | |
ce5b453a SM |
4123 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
4124 | const char *namestring, int offset) | |
950c215d | 4125 | { |
ce5b453a | 4126 | Lisp_Object sym; |
5e2327cf | 4127 | sym = intern_c_string (namestring); |
ce5b453a SM |
4128 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
4129 | ko_fwd->offset = offset; | |
b9598260 | 4130 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4131 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4132 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 4133 | } |
078e7b4a | 4134 | \f |
11938f10 KH |
4135 | /* Record the value of load-path used at the start of dumping |
4136 | so we can see if the site changed it later during dumping. */ | |
4137 | static Lisp_Object dump_path; | |
4138 | ||
d5b28a9d | 4139 | void |
971de7fb | 4140 | init_lread (void) |
078e7b4a | 4141 | { |
46947372 | 4142 | char *normal; |
e73997a1 | 4143 | int turn_off_warning = 0; |
078e7b4a | 4144 | |
279499f0 | 4145 | /* Compute the default load-path. */ |
46947372 JB |
4146 | #ifdef CANNOT_DUMP |
4147 | normal = PATH_LOADSEARCH; | |
e065a56e | 4148 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
4149 | #else |
4150 | if (NILP (Vpurify_flag)) | |
4151 | normal = PATH_LOADSEARCH; | |
279499f0 | 4152 | else |
46947372 | 4153 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 4154 | |
46947372 JB |
4155 | /* In a dumped Emacs, we normally have to reset the value of |
4156 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
4157 | uses ../lisp, instead of the path of the installed elisp | |
4158 | libraries. However, if it appears that Vload_path was changed | |
4159 | from the default before dumping, don't override that value. */ | |
4746118a JB |
4160 | if (initialized) |
4161 | { | |
4746118a | 4162 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
4163 | { |
4164 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 4165 | if (!NILP (Vinstallation_directory)) |
80667d53 | 4166 | { |
3ddff138 RS |
4167 | Lisp_Object tem, tem1, sitelisp; |
4168 | ||
4169 | /* Remove site-lisp dirs from path temporarily and store | |
4170 | them in sitelisp, then conc them on at the end so | |
4171 | they're always first in path. */ | |
4172 | sitelisp = Qnil; | |
4173 | while (1) | |
4174 | { | |
4175 | tem = Fcar (Vload_path); | |
4176 | tem1 = Fstring_match (build_string ("site-lisp"), | |
4177 | tem, Qnil); | |
4178 | if (!NILP (tem1)) | |
4179 | { | |
4180 | Vload_path = Fcdr (Vload_path); | |
4181 | sitelisp = Fcons (tem, sitelisp); | |
4182 | } | |
4183 | else | |
4184 | break; | |
4185 | } | |
4186 | ||
74180aa4 | 4187 | /* Add to the path the lisp subdir of the |
3a3056e5 | 4188 | installation dir, if it exists. */ |
74180aa4 RS |
4189 | tem = Fexpand_file_name (build_string ("lisp"), |
4190 | Vinstallation_directory); | |
3a3056e5 RS |
4191 | tem1 = Ffile_exists_p (tem); |
4192 | if (!NILP (tem1)) | |
4193 | { | |
4194 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
4195 | { |
4196 | turn_off_warning = 1; | |
3ddff138 | 4197 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 4198 | } |
3a3056e5 RS |
4199 | } |
4200 | else | |
4201 | /* That dir doesn't exist, so add the build-time | |
4202 | Lisp dirs instead. */ | |
4203 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 4204 | |
9fbc0116 RS |
4205 | /* Add leim under the installation dir, if it exists. */ |
4206 | tem = Fexpand_file_name (build_string ("leim"), | |
4207 | Vinstallation_directory); | |
4208 | tem1 = Ffile_exists_p (tem); | |
4209 | if (!NILP (tem1)) | |
4210 | { | |
4211 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4212 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
4213 | } |
4214 | ||
88852d45 | 4215 | /* Add site-lisp under the installation dir, if it exists. */ |
c478f98c RS |
4216 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4217 | Vinstallation_directory); | |
4218 | tem1 = Ffile_exists_p (tem); | |
4219 | if (!NILP (tem1)) | |
4220 | { | |
4221 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4222 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 4223 | } |
0f337465 RS |
4224 | |
4225 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
4226 | and it is run from where it was built, add to load-path |
4227 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
4228 | |
4229 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4230 | { | |
33046fc9 RS |
4231 | Lisp_Object tem2; |
4232 | ||
0f337465 RS |
4233 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
4234 | Vinstallation_directory); | |
4235 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
4236 | |
4237 | /* Don't be fooled if they moved the entire source tree | |
4238 | AFTER dumping Emacs. If the build directory is indeed | |
4239 | different from the source dir, src/Makefile.in and | |
4240 | src/Makefile will not be found together. */ | |
4241 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4242 | Vinstallation_directory); | |
4243 | tem2 = Ffile_exists_p (tem); | |
4244 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
4245 | { |
4246 | tem = Fexpand_file_name (build_string ("lisp"), | |
4247 | Vsource_directory); | |
4248 | ||
4249 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4250 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 4251 | |
9fbc0116 RS |
4252 | tem = Fexpand_file_name (build_string ("leim"), |
4253 | Vsource_directory); | |
4254 | ||
4255 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4256 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 4257 | |
0f337465 RS |
4258 | tem = Fexpand_file_name (build_string ("site-lisp"), |
4259 | Vsource_directory); | |
4260 | ||
4261 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 4262 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
4263 | } |
4264 | } | |
3ddff138 RS |
4265 | if (!NILP (sitelisp)) |
4266 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
4267 | } |
4268 | } | |
4746118a JB |
4269 | } |
4270 | else | |
11938f10 | 4271 | { |
7b396c6c RS |
4272 | /* NORMAL refers to the lisp dir in the source directory. */ |
4273 | /* We used to add ../lisp at the front here, but | |
4274 | that caused trouble because it was copied from dump_path | |
88852d45 | 4275 | into Vload_path, above, when Vinstallation_directory was non-nil. |
7b396c6c RS |
4276 | It should be unnecessary. */ |
4277 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
4278 | dump_path = Vload_path; |
4279 | } | |
46947372 | 4280 | #endif |
279499f0 | 4281 | |
9735b9ce | 4282 | #if (!(defined (WINDOWSNT) || (defined (HAVE_NS)))) |
177c0ea7 JB |
4283 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
4284 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 4285 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
9e2a2647 | 4286 | EMACSLOADPATH environment variable below, disable the warning on NT. */ |
317073d5 | 4287 | |
078e7b4a | 4288 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
4289 | if (!turn_off_warning) |
4290 | { | |
4291 | Lisp_Object path_tail; | |
078e7b4a | 4292 | |
e73997a1 RS |
4293 | for (path_tail = Vload_path; |
4294 | !NILP (path_tail); | |
c1d497be | 4295 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
4296 | { |
4297 | Lisp_Object dirfile; | |
4298 | dirfile = Fcar (path_tail); | |
4299 | if (STRINGP (dirfile)) | |
4300 | { | |
4301 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 4302 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 4303 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 4304 | XCAR (path_tail)); |
e73997a1 RS |
4305 | } |
4306 | } | |
4307 | } | |
9e2a2647 | 4308 | #endif /* !(WINDOWSNT || HAVE_NS) */ |
46947372 JB |
4309 | |
4310 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
4311 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 4312 | #ifndef CANNOT_DUMP |
46947372 JB |
4313 | if (NILP (Vpurify_flag) |
4314 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 4315 | #endif |
279499f0 | 4316 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
4317 | |
4318 | Vvalues = Qnil; | |
4319 | ||
078e7b4a | 4320 | load_in_progress = 0; |
4e53f562 | 4321 | Vload_file_name = Qnil; |
d2c6be7f RS |
4322 | |
4323 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
4324 | |
4325 | Vstandard_input = Qt; | |
f74b0705 | 4326 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4327 | } |
4328 | ||
85496b8c | 4329 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
88852d45 | 4330 | does not exist. Print it on stderr and put it in *Messages*. */ |
85496b8c | 4331 | |
d5b28a9d | 4332 | void |
a8fe7202 | 4333 | dir_warning (const char *format, Lisp_Object dirname) |
85496b8c RS |
4334 | { |
4335 | char *buffer | |
d5db4077 | 4336 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 4337 | |
d5db4077 KR |
4338 | fprintf (stderr, format, SDATA (dirname)); |
4339 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
4340 | /* Don't log the warning before we've initialized!! */ |
4341 | if (initialized) | |
4342 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
4343 | } |
4344 | ||
078e7b4a | 4345 | void |
971de7fb | 4346 | syms_of_lread (void) |
078e7b4a JB |
4347 | { |
4348 | defsubr (&Sread); | |
4349 | defsubr (&Sread_from_string); | |
4350 | defsubr (&Sintern); | |
4351 | defsubr (&Sintern_soft); | |
d007f5c8 | 4352 | defsubr (&Sunintern); |
971a4293 | 4353 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4354 | defsubr (&Sload); |
228d4b1c | 4355 | defsubr (&Seval_buffer); |
078e7b4a JB |
4356 | defsubr (&Seval_region); |
4357 | defsubr (&Sread_char); | |
4358 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4359 | defsubr (&Sread_event); |
078e7b4a JB |
4360 | defsubr (&Sget_file_char); |
4361 | defsubr (&Smapatoms); | |
86d00812 | 4362 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
4363 | |
4364 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
4365 | doc: /* Symbol table for use by `intern' and `read'. |
4366 | It is a vector whose length ought to be prime for best results. | |
4367 | The vector's contents don't make sense if examined from Lisp programs; | |
4368 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
4369 | |
4370 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
4371 | doc: /* List of values of all expressions which were read, evaluated and printed. |
4372 | Order is reverse chronological. */); | |
078e7b4a JB |
4373 | |
4374 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
4375 | doc: /* Stream for read to get input from. |
4376 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4377 | Vstandard_input = Qt; |
4378 | ||
abb13b09 CW |
4379 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4380 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4381 | ||
4382 | If this variable is a buffer, then only forms read from that buffer | |
4383 | will be added to `read-symbol-positions-list'. | |
4384 | If this variable is t, then all read forms will be added. | |
4385 | The effect of all other values other than nil are not currently | |
4386 | defined, although they may be in the future. | |
4387 | ||
4388 | The positions are relative to the last call to `read' or | |
4389 | `read-from-string'. It is probably a bad idea to set this variable at | |
4390 | the toplevel; bind it instead. */); | |
4391 | Vread_with_symbol_positions = Qnil; | |
4392 | ||
4393 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4394 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4395 | This variable is modified during calls to `read' or |
4396 | `read-from-string', but only when `read-with-symbol-positions' is | |
4397 | non-nil. | |
4398 | ||
4399 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4400 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4401 | symbol from the position where `read' or `read-from-string' started. |
4402 | ||
4403 | Note that a symbol will appear multiple times in this list, if it was | |
4404 | read multiple times. The list is in the same order as the symbols | |
4405 | were read in. */); | |
177c0ea7 | 4406 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4407 | |
91f68422 CY |
4408 | DEFVAR_LISP ("read-circle", &Vread_circle, |
4409 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); | |
4410 | Vread_circle = Qt; | |
4411 | ||
078e7b4a | 4412 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4413 | doc: /* *List of directories to search for files to load. |
4414 | Each element is a string (directory name) or nil (try default directory). | |
4415 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4416 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4417 | |
e61b9b87 | 4418 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4419 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4420 | This list should not include the empty string. | |
4421 | `load' and related functions try to append these suffixes, in order, | |
4422 | to the specified file name if a Lisp suffix is allowed or required. */); | |
a4ada374 DN |
4423 | Vload_suffixes = Fcons (make_pure_c_string (".elc"), |
4424 | Fcons (make_pure_c_string (".el"), Qnil)); | |
971a4293 LT |
4425 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4426 | doc: /* List of suffixes that indicate representations of \ | |
4427 | the same file. | |
4428 | This list should normally start with the empty string. | |
4429 | ||
4430 | Enabling Auto Compression mode appends the suffixes in | |
4431 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4432 | mode removes them again. `load' and related functions use this list to | |
4433 | determine whether they should look for compressed versions of a file | |
4434 | and, if so, which suffixes they should try to append to the file name | |
4435 | in order to do so. However, if you want to customize which suffixes | |
4436 | the loading functions recognize as compression suffixes, you should | |
4437 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
a74d1c97 | 4438 | Vload_file_rep_suffixes = Fcons (empty_unibyte_string, Qnil); |
e61b9b87 | 4439 | |
078e7b4a | 4440 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
e0f24100 | 4441 | doc: /* Non-nil if inside of `load'. */); |
d67b4f80 | 4442 | Qload_in_progress = intern_c_string ("load-in-progress"); |
2baf5e76 | 4443 | staticpro (&Qload_in_progress); |
078e7b4a JB |
4444 | |
4445 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4446 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4447 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4448 | ||
4449 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4450 | a symbol \(a feature name). | |
4451 | ||
4452 | When `load' is run and the file-name argument matches an element's | |
4453 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4454 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4455 | ||
4456 | An error in FORMS does not undo the load, but does prevent execution of | |
4457 | the rest of the FORMS. */); | |
078e7b4a JB |
4458 | Vafter_load_alist = Qnil; |
4459 | ||
ae321d28 | 4460 | DEFVAR_LISP ("load-history", &Vload_history, |
4801c5fa CY |
4461 | doc: /* Alist mapping loaded file names to symbols and features. |
4462 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4463 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4464 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4465 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4466 | for symbols and features not associated with any file. | |
4467 | ||
4468 | The remaining ENTRIES in the alist element describe the functions and | |
4469 | variables defined in that file, the features provided, and the | |
4470 | features required. Each entry has the form `(provide . FEATURE)', | |
4471 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
4472 | `(defface . SYMBOL)', or `(t . SYMBOL)'. In addition, an entry `(t | |
4473 | . SYMBOL)' may precede an entry `(defun . FUNCTION)', and means that | |
4474 | SYMBOL was an autoload before this file redefined it as a function. | |
0fc213e9 | 4475 | |
b502a9a1 RS |
4476 | During preloading, the file name recorded is relative to the main Lisp |
4477 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4478 | Vload_history = Qnil; |
4479 | ||
20ea2964 | 4480 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4481 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4482 | Vload_file_name = Qnil; |
4483 | ||
4116ab9f | 4484 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4485 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4486 | If the file loaded had extension `.elc', and the corresponding source file |
4487 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4488 | by functions like `custom-save-all' which edit the init file. |
4489 | While Emacs loads and evaluates the init file, value is the real name | |
4490 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4491 | Vuser_init_file = Qnil; |
4492 | ||
8a1f1537 | 4493 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4494 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4495 | Vcurrent_load_list = Qnil; |
4496 | ||
84a15045 | 4497 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4498 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4499 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4500 | Vload_read_function = Qnil; |
4501 | ||
fe0e03f3 | 4502 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4503 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4504 | This function is for doing code conversion before reading the source file. |
4505 | If nil, loading is done without any code conversion. | |
4506 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4507 | FULLNAME is the full name of FILE. | |
4508 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4509 | Vload_source_file_function = Qnil; |
4510 | ||
b2a30870 | 4511 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4512 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4513 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4514 | load_force_doc_strings = 0; |
4515 | ||
94e554db | 4516 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4517 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4518 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4519 | and is not meant for users to change. */); | |
94e554db RS |
4520 | load_convert_to_unibyte = 0; |
4521 | ||
1521a8fa | 4522 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4523 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4524 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4525 | Vsource_directory |
4526 | = Fexpand_file_name (build_string ("../"), | |
4527 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4528 | ||
4b104c41 | 4529 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4530 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4531 | Vpreloaded_file_list = Qnil; |
4532 | ||
1ffcc3b1 | 4533 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4534 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4535 | Vbyte_boolean_vars = Qnil; |
4536 | ||
da84f340 | 4537 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4538 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4539 | Some versions of XEmacs use different byte codes than Emacs. These | |
4540 | incompatible byte codes can make Emacs crash when it tries to execute | |
4541 | them. */); | |
da84f340 GM |
4542 | load_dangerous_libraries = 0; |
4543 | ||
beb0b7f9 EZ |
4544 | DEFVAR_BOOL ("force-load-messages", &force_load_messages, |
4545 | doc: /* Non-nil means force printing messages when loading Lisp files. | |
4546 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4547 | force_load_messages = 0; | |
4548 | ||
bb970e67 | 4549 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4550 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4551 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4552 | from the file, and matches them against this regular expression. | |
4553 | When the regular expression matches, the file is considered to be safe | |
4554 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4555 | Vbytecomp_version_regexp |
d67b4f80 | 4556 | = make_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4557 | |
b9598260 SM |
4558 | Qlexical_binding = intern ("lexical-binding"); |
4559 | staticpro (&Qlexical_binding); | |
4560 | DEFVAR_LISP ("lexical-binding", &Vlexical_binding, | |
4561 | doc: /* If non-nil, use lexical binding when evaluating code. | |
4562 | This only applies to code evaluated by `eval-buffer' and `eval-region'. | |
4563 | This variable is automatically set from the file variables of an interpreted | |
4564 | lisp file read using `load'. | |
4565 | This variable automatically becomes buffer-local when set. */); | |
4566 | Fmake_variable_buffer_local (Qlexical_binding); | |
4567 | ||
3f39f996 RS |
4568 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4569 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4570 | Veval_buffer_list = Qnil; | |
4571 | ||
5aa273b0 SM |
4572 | DEFVAR_LISP ("old-style-backquotes", &Vold_style_backquotes, |
4573 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); | |
4574 | Vold_style_backquotes = Qnil; | |
d67b4f80 | 4575 | Qold_style_backquotes = intern_c_string ("old-style-backquotes"); |
1d064697 | 4576 | staticpro (&Qold_style_backquotes); |
5aa273b0 | 4577 | |
a90ba1e2 KH |
4578 | /* Vsource_directory was initialized in init_lread. */ |
4579 | ||
d2c6be7f RS |
4580 | load_descriptor_list = Qnil; |
4581 | staticpro (&load_descriptor_list); | |
4582 | ||
d67b4f80 | 4583 | Qcurrent_load_list = intern_c_string ("current-load-list"); |
8a1f1537 RS |
4584 | staticpro (&Qcurrent_load_list); |
4585 | ||
d67b4f80 | 4586 | Qstandard_input = intern_c_string ("standard-input"); |
078e7b4a JB |
4587 | staticpro (&Qstandard_input); |
4588 | ||
d67b4f80 | 4589 | Qread_char = intern_c_string ("read-char"); |
078e7b4a JB |
4590 | staticpro (&Qread_char); |
4591 | ||
d67b4f80 | 4592 | Qget_file_char = intern_c_string ("get-file-char"); |
078e7b4a | 4593 | staticpro (&Qget_file_char); |
7bd279cd | 4594 | |
d67b4f80 | 4595 | Qget_emacs_mule_file_char = intern_c_string ("get-emacs-mule-file-char"); |
8792be66 KH |
4596 | staticpro (&Qget_emacs_mule_file_char); |
4597 | ||
d67b4f80 | 4598 | Qload_force_doc_strings = intern_c_string ("load-force-doc-strings"); |
8792be66 KH |
4599 | staticpro (&Qload_force_doc_strings); |
4600 | ||
d67b4f80 | 4601 | Qbackquote = intern_c_string ("`"); |
17634846 | 4602 | staticpro (&Qbackquote); |
d67b4f80 | 4603 | Qcomma = intern_c_string (","); |
17634846 | 4604 | staticpro (&Qcomma); |
d67b4f80 | 4605 | Qcomma_at = intern_c_string (",@"); |
17634846 | 4606 | staticpro (&Qcomma_at); |
d67b4f80 | 4607 | Qcomma_dot = intern_c_string (",."); |
17634846 RS |
4608 | staticpro (&Qcomma_dot); |
4609 | ||
d67b4f80 | 4610 | Qinhibit_file_name_operation = intern_c_string ("inhibit-file-name-operation"); |
74549846 RS |
4611 | staticpro (&Qinhibit_file_name_operation); |
4612 | ||
d67b4f80 | 4613 | Qascii_character = intern_c_string ("ascii-character"); |
7bd279cd | 4614 | staticpro (&Qascii_character); |
c2225d00 | 4615 | |
d67b4f80 | 4616 | Qfunction = intern_c_string ("function"); |
2b6cae0c RS |
4617 | staticpro (&Qfunction); |
4618 | ||
d67b4f80 | 4619 | Qload = intern_c_string ("load"); |
c2225d00 | 4620 | staticpro (&Qload); |
20ea2964 | 4621 | |
d67b4f80 | 4622 | Qload_file_name = intern_c_string ("load-file-name"); |
20ea2964 | 4623 | staticpro (&Qload_file_name); |
11938f10 | 4624 | |
d67b4f80 | 4625 | Qeval_buffer_list = intern_c_string ("eval-buffer-list"); |
3f39f996 RS |
4626 | staticpro (&Qeval_buffer_list); |
4627 | ||
d67b4f80 | 4628 | Qfile_truename = intern_c_string ("file-truename"); |
6bb6da3e AM |
4629 | staticpro (&Qfile_truename) ; |
4630 | ||
d67b4f80 | 4631 | Qdo_after_load_evaluation = intern_c_string ("do-after-load-evaluation"); |
6bb6da3e AM |
4632 | staticpro (&Qdo_after_load_evaluation) ; |
4633 | ||
11938f10 | 4634 | staticpro (&dump_path); |
4ad679f9 EN |
4635 | |
4636 | staticpro (&read_objects); | |
4637 | read_objects = Qnil; | |
9e062b6c | 4638 | staticpro (&seen_list); |
f153db13 | 4639 | seen_list = Qnil; |
177c0ea7 | 4640 | |
7ee3bd7b GM |
4641 | Vloads_in_progress = Qnil; |
4642 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4643 | |
d67b4f80 | 4644 | Qhash_table = intern_c_string ("hash-table"); |
f19a0f5b | 4645 | staticpro (&Qhash_table); |
d67b4f80 | 4646 | Qdata = intern_c_string ("data"); |
f19a0f5b | 4647 | staticpro (&Qdata); |
d67b4f80 | 4648 | Qtest = intern_c_string ("test"); |
f19a0f5b | 4649 | staticpro (&Qtest); |
d67b4f80 | 4650 | Qsize = intern_c_string ("size"); |
f19a0f5b | 4651 | staticpro (&Qsize); |
d67b4f80 | 4652 | Qweakness = intern_c_string ("weakness"); |
f19a0f5b | 4653 | staticpro (&Qweakness); |
d67b4f80 | 4654 | Qrehash_size = intern_c_string ("rehash-size"); |
f19a0f5b | 4655 | staticpro (&Qrehash_size); |
d67b4f80 | 4656 | Qrehash_threshold = intern_c_string ("rehash-threshold"); |
f19a0f5b | 4657 | staticpro (&Qrehash_threshold); |
078e7b4a | 4658 | } |
6b61353c KH |
4659 | |
4660 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4661 | (do not change this comment) */ |