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, | |
4e6835db | 4 | 2005, 2006, 2007 Free Software Foundation, Inc. |
078e7b4a JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
46947372 | 10 | the Free Software Foundation; either version 2, or (at your option) |
078e7b4a JB |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
078e7b4a JB |
22 | |
23 | ||
98280b76 | 24 | #include <config.h> |
078e7b4a JB |
25 | #include <stdio.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/file.h> | |
2c1b5dbe | 29 | #include <errno.h> |
078e7b4a | 30 | #include "lisp.h" |
95384e1e | 31 | #include "intervals.h" |
078e7b4a | 32 | #include "buffer.h" |
fe0e03f3 | 33 | #include "charset.h" |
57bda87a | 34 | #include <epaths.h> |
078e7b4a | 35 | #include "commands.h" |
e37c0805 | 36 | #include "keyboard.h" |
7bd279cd | 37 | #include "termhooks.h" |
eb191db2 | 38 | #include "coding.h" |
078e7b4a JB |
39 | |
40 | #ifdef lint | |
41 | #include <sys/inode.h> | |
42 | #endif /* lint */ | |
43 | ||
79051982 RS |
44 | #ifdef MSDOS |
45 | #if __DJGPP__ < 2 | |
46 | #include <unistd.h> /* to get X_OK */ | |
47 | #endif | |
48 | #include "msdos.h" | |
49 | #endif | |
50 | ||
c1a2f60a AS |
51 | #ifdef HAVE_UNISTD_H |
52 | #include <unistd.h> | |
53 | #endif | |
54 | ||
078e7b4a JB |
55 | #ifndef X_OK |
56 | #define X_OK 01 | |
57 | #endif | |
58 | ||
078e7b4a | 59 | #include <math.h> |
078e7b4a | 60 | |
c011e9a5 RS |
61 | #ifdef HAVE_SETLOCALE |
62 | #include <locale.h> | |
63 | #endif /* HAVE_SETLOCALE */ | |
64 | ||
bcdec28b DL |
65 | #ifdef HAVE_FCNTL_H |
66 | #include <fcntl.h> | |
67 | #endif | |
f7d279f0 RS |
68 | #ifndef O_RDONLY |
69 | #define O_RDONLY 0 | |
70 | #endif | |
71 | ||
79cf851c | 72 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
73 | #define file_offset off_t |
74 | #define file_tell ftello | |
75 | #else | |
76 | #define file_offset long | |
77 | #define file_tell ftell | |
78 | #endif | |
79 | ||
03695ace | 80 | #ifndef USE_CRT_DLL |
2c1b5dbe | 81 | extern int errno; |
03695ace | 82 | #endif |
2c1b5dbe | 83 | |
8a1f1537 | 84 | Lisp_Object Qread_char, Qget_file_char, Qstandard_input, Qcurrent_load_list; |
078e7b4a | 85 | Lisp_Object Qvariable_documentation, Vvalues, Vstandard_input, Vafter_load_alist; |
20ea2964 | 86 | Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 87 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
74549846 | 88 | Lisp_Object Qinhibit_file_name_operation; |
3f39f996 | 89 | Lisp_Object Qeval_buffer_list, Veval_buffer_list; |
6bb6da3e | 90 | Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd RS |
91 | |
92 | extern Lisp_Object Qevent_symbol_element_mask; | |
74549846 | 93 | extern Lisp_Object Qfile_exists_p; |
078e7b4a | 94 | |
9942fa0c | 95 | /* non-zero iff inside `load' */ |
078e7b4a JB |
96 | int load_in_progress; |
97 | ||
1521a8fa RS |
98 | /* Directory in which the sources were found. */ |
99 | Lisp_Object Vsource_directory; | |
100 | ||
e61b9b87 | 101 | /* Search path and suffixes for files to be loaded. */ |
971a4293 | 102 | Lisp_Object Vload_path, Vload_suffixes, Vload_file_rep_suffixes; |
078e7b4a | 103 | |
4116ab9f KH |
104 | /* File name of user's init file. */ |
105 | Lisp_Object Vuser_init_file; | |
106 | ||
ae321d28 RS |
107 | /* This is the user-visible association list that maps features to |
108 | lists of defs in their load files. */ | |
109 | Lisp_Object Vload_history; | |
110 | ||
20ea2964 | 111 | /* This is used to build the load history. */ |
ae321d28 RS |
112 | Lisp_Object Vcurrent_load_list; |
113 | ||
4b104c41 RS |
114 | /* List of files that were preloaded. */ |
115 | Lisp_Object Vpreloaded_file_list; | |
116 | ||
20ea2964 RS |
117 | /* Name of file actually being read by `load'. */ |
118 | Lisp_Object Vload_file_name; | |
119 | ||
84a15045 RS |
120 | /* Function to use for reading, in `load' and friends. */ |
121 | Lisp_Object Vload_read_function; | |
122 | ||
4ad679f9 EN |
123 | /* The association list of objects read with the #n=object form. |
124 | Each member of the list has the form (n . object), and is used to | |
125 | look up the object for the corresponding #n# construct. | |
126 | It must be set to nil before all top-level calls to read0. */ | |
127 | Lisp_Object read_objects; | |
128 | ||
b2a30870 RS |
129 | /* Nonzero means load should forcibly load all dynamic doc strings. */ |
130 | static int load_force_doc_strings; | |
131 | ||
94e554db RS |
132 | /* Nonzero means read should convert strings to unibyte. */ |
133 | static int load_convert_to_unibyte; | |
134 | ||
9b33a603 | 135 | /* Function to use for loading an Emacs Lisp source file (not |
fe0e03f3 KH |
136 | compiled) instead of readevalloop. */ |
137 | Lisp_Object Vload_source_file_function; | |
138 | ||
1ffcc3b1 DL |
139 | /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */ |
140 | Lisp_Object Vbyte_boolean_vars; | |
141 | ||
abb13b09 CW |
142 | /* Whether or not to add a `read-positions' property to symbols |
143 | read. */ | |
144 | Lisp_Object Vread_with_symbol_positions; | |
145 | ||
146 | /* List of (SYMBOL . POSITION) accumulated so far. */ | |
147 | Lisp_Object Vread_symbol_positions_list; | |
148 | ||
d2c6be7f RS |
149 | /* List of descriptors now open for Fload. */ |
150 | static Lisp_Object load_descriptor_list; | |
151 | ||
b2a30870 | 152 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
153 | static FILE *instream; |
154 | ||
155 | /* When nonzero, read conses in pure space */ | |
156 | static int read_pure; | |
157 | ||
b2a30870 | 158 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
078e7b4a | 159 | static int read_from_string_index; |
bed23cb2 | 160 | static int read_from_string_index_byte; |
078e7b4a | 161 | static int read_from_string_limit; |
17634846 | 162 | |
6f7f43d5 RS |
163 | /* Number of bytes left to read in the buffer character |
164 | that `readchar' has already advanced over. */ | |
165 | static int readchar_backlog; | |
abb13b09 CW |
166 | /* Number of characters read in the current call to Fread or |
167 | Fread_from_string. */ | |
168 | static int readchar_count; | |
6f7f43d5 | 169 | |
c15cfd1f | 170 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
171 | static char *saved_doc_string; |
172 | /* Length of buffer allocated in saved_doc_string. */ | |
173 | static int saved_doc_string_size; | |
174 | /* Length of actual data in saved_doc_string. */ | |
175 | static int saved_doc_string_length; | |
176 | /* This is the file position that string came from. */ | |
68c45bf0 | 177 | static file_offset saved_doc_string_position; |
b2a30870 | 178 | |
c15cfd1f RS |
179 | /* This contains the previous string skipped with #@. |
180 | We copy it from saved_doc_string when a new string | |
181 | is put in saved_doc_string. */ | |
182 | static char *prev_saved_doc_string; | |
183 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
184 | static int prev_saved_doc_string_size; | |
185 | /* Length of actual data in prev_saved_doc_string. */ | |
186 | static int prev_saved_doc_string_length; | |
187 | /* This is the file position that string came from. */ | |
68c45bf0 | 188 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 189 | |
17634846 RS |
190 | /* Nonzero means inside a new-style backquote |
191 | with no surrounding parentheses. | |
192 | Fread initializes this to zero, so we need not specbind it | |
193 | or worry about what happens to it when there is an error. */ | |
194 | static int new_backquote_flag; | |
7ee3bd7b GM |
195 | |
196 | /* A list of file names for files being loaded in Fload. Used to | |
197 | check for recursive loads. */ | |
198 | ||
9942fa0c | 199 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 200 | |
550a625e GM |
201 | /* Non-zero means load dangerous compiled Lisp files. */ |
202 | ||
203 | int load_dangerous_libraries; | |
204 | ||
205 | /* A regular expression used to detect files compiled with Emacs. */ | |
206 | ||
207 | static Lisp_Object Vbytecomp_version_regexp; | |
208 | ||
a742d646 | 209 | static void to_multibyte P_ ((char **, char **, int *)); |
11d89e5d | 210 | static void readevalloop P_ ((Lisp_Object, FILE*, Lisp_Object, |
550a625e | 211 | Lisp_Object (*) (), int, |
4c03c46d | 212 | Lisp_Object, Lisp_Object, |
550a625e GM |
213 | Lisp_Object, Lisp_Object)); |
214 | static Lisp_Object load_unwind P_ ((Lisp_Object)); | |
215 | static Lisp_Object load_descriptor_unwind P_ ((Lisp_Object)); | |
216 | ||
336d4a9c | 217 | static void invalid_syntax P_ ((const char *, int)) NO_RETURN; |
2381d38d | 218 | static void end_of_file_error P_ (()) NO_RETURN; |
336d4a9c | 219 | |
078e7b4a JB |
220 | \f |
221 | /* Handle unreading and rereading of characters. | |
222 | Write READCHAR to read a character, | |
fe0e03f3 KH |
223 | UNREAD(c) to unread c to be read again. |
224 | ||
abb13b09 CW |
225 | The READCHAR and UNREAD macros are meant for reading/unreading a |
226 | byte code; they do not handle multibyte characters. The caller | |
227 | should manage them if necessary. | |
177c0ea7 | 228 | |
abb13b09 CW |
229 | [ Actually that seems to be a lie; READCHAR will definitely read |
230 | multibyte characters from buffer sources, at least. Is the | |
231 | comment just out of date? | |
232 | -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ] | |
fe0e03f3 | 233 | */ |
078e7b4a JB |
234 | |
235 | #define READCHAR readchar (readcharfun) | |
236 | #define UNREAD(c) unreadchar (readcharfun, c) | |
237 | ||
238 | static int | |
239 | readchar (readcharfun) | |
240 | Lisp_Object readcharfun; | |
241 | { | |
242 | Lisp_Object tem; | |
95384e1e | 243 | register int c; |
078e7b4a | 244 | |
abb13b09 | 245 | readchar_count++; |
177c0ea7 | 246 | |
cfff016d | 247 | if (BUFFERP (readcharfun)) |
078e7b4a | 248 | { |
bed23cb2 | 249 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 250 | |
bed23cb2 RS |
251 | int pt_byte = BUF_PT_BYTE (inbuffer); |
252 | int orig_pt_byte = pt_byte; | |
6f7f43d5 | 253 | |
00a9a935 RS |
254 | if (readchar_backlog > 0) |
255 | /* We get the address of the byte just passed, | |
256 | which is the last byte of the character. | |
257 | The other bytes in this character are consecutive with it, | |
258 | because the gap can't be in the middle of a character. */ | |
259 | return *(BUF_BYTE_ADDRESS (inbuffer, BUF_PT_BYTE (inbuffer) - 1) | |
260 | - --readchar_backlog); | |
261 | ||
bed23cb2 RS |
262 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
263 | return -1; | |
078e7b4a | 264 | |
00a9a935 RS |
265 | readchar_backlog = -1; |
266 | ||
bed23cb2 RS |
267 | if (! NILP (inbuffer->enable_multibyte_characters)) |
268 | { | |
00a9a935 | 269 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
270 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
271 | BUF_INC_POS (inbuffer, pt_byte); | |
272 | c = STRING_CHAR (p, pt_byte - orig_pt_byte); | |
273 | } | |
274 | else | |
275 | { | |
276 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
277 | pt_byte++; | |
6f7f43d5 | 278 | } |
bed23cb2 | 279 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 280 | |
bed23cb2 | 281 | return c; |
078e7b4a | 282 | } |
cfff016d | 283 | if (MARKERP (readcharfun)) |
078e7b4a | 284 | { |
bed23cb2 | 285 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 286 | |
bed23cb2 RS |
287 | int bytepos = marker_byte_position (readcharfun); |
288 | int orig_bytepos = bytepos; | |
6f7f43d5 | 289 | |
00a9a935 RS |
290 | if (readchar_backlog > 0) |
291 | /* We get the address of the byte just passed, | |
292 | which is the last byte of the character. | |
293 | The other bytes in this character are consecutive with it, | |
294 | because the gap can't be in the middle of a character. */ | |
295 | return *(BUF_BYTE_ADDRESS (inbuffer, XMARKER (readcharfun)->bytepos - 1) | |
296 | - --readchar_backlog); | |
297 | ||
bed23cb2 RS |
298 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
299 | return -1; | |
6f7f43d5 | 300 | |
00a9a935 RS |
301 | readchar_backlog = -1; |
302 | ||
bed23cb2 RS |
303 | if (! NILP (inbuffer->enable_multibyte_characters)) |
304 | { | |
00a9a935 | 305 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
306 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
307 | BUF_INC_POS (inbuffer, bytepos); | |
308 | c = STRING_CHAR (p, bytepos - orig_bytepos); | |
309 | } | |
310 | else | |
311 | { | |
312 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
313 | bytepos++; | |
6f7f43d5 RS |
314 | } |
315 | ||
bed23cb2 RS |
316 | XMARKER (readcharfun)->bytepos = bytepos; |
317 | XMARKER (readcharfun)->charpos++; | |
318 | ||
319 | return c; | |
078e7b4a | 320 | } |
ad0153e4 RS |
321 | |
322 | if (EQ (readcharfun, Qlambda)) | |
323 | return read_bytecode_char (0); | |
324 | ||
078e7b4a | 325 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe KH |
326 | { |
327 | c = getc (instream); | |
328 | #ifdef EINTR | |
329 | /* Interrupted reads have been observed while reading over the network */ | |
330 | while (c == EOF && ferror (instream) && errno == EINTR) | |
331 | { | |
495bf630 | 332 | QUIT; |
2c1b5dbe KH |
333 | clearerr (instream); |
334 | c = getc (instream); | |
335 | } | |
336 | #endif | |
337 | return c; | |
338 | } | |
078e7b4a | 339 | |
cfff016d | 340 | if (STRINGP (readcharfun)) |
078e7b4a | 341 | { |
bed23cb2 | 342 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 343 | c = -1; |
f0354c03 | 344 | else |
bed23cb2 RS |
345 | FETCH_STRING_CHAR_ADVANCE (c, readcharfun, |
346 | read_from_string_index, | |
347 | read_from_string_index_byte); | |
6f7f43d5 | 348 | |
078e7b4a JB |
349 | return c; |
350 | } | |
351 | ||
352 | tem = call0 (readcharfun); | |
353 | ||
265a9e55 | 354 | if (NILP (tem)) |
078e7b4a JB |
355 | return -1; |
356 | return XINT (tem); | |
357 | } | |
358 | ||
359 | /* Unread the character C in the way appropriate for the stream READCHARFUN. | |
360 | If the stream is a user function, call it with the char as argument. */ | |
361 | ||
362 | static void | |
363 | unreadchar (readcharfun, c) | |
364 | Lisp_Object readcharfun; | |
365 | int c; | |
366 | { | |
abb13b09 | 367 | readchar_count--; |
92fddec9 KH |
368 | if (c == -1) |
369 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
370 | since readchar didn't advance it when we read it. */ | |
371 | ; | |
cfff016d | 372 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 373 | { |
bed23cb2 RS |
374 | struct buffer *b = XBUFFER (readcharfun); |
375 | int bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 376 | |
00a9a935 RS |
377 | if (readchar_backlog >= 0) |
378 | readchar_backlog++; | |
bed23cb2 | 379 | else |
00a9a935 RS |
380 | { |
381 | BUF_PT (b)--; | |
382 | if (! NILP (b->enable_multibyte_characters)) | |
383 | BUF_DEC_POS (b, bytepos); | |
384 | else | |
385 | bytepos--; | |
d7760ca9 | 386 | |
00a9a935 RS |
387 | BUF_PT_BYTE (b) = bytepos; |
388 | } | |
d7760ca9 | 389 | } |
cfff016d | 390 | else if (MARKERP (readcharfun)) |
d7760ca9 | 391 | { |
bed23cb2 RS |
392 | struct buffer *b = XMARKER (readcharfun)->buffer; |
393 | int bytepos = XMARKER (readcharfun)->bytepos; | |
d7760ca9 | 394 | |
00a9a935 RS |
395 | if (readchar_backlog >= 0) |
396 | readchar_backlog++; | |
bed23cb2 | 397 | else |
00a9a935 RS |
398 | { |
399 | XMARKER (readcharfun)->charpos--; | |
400 | if (! NILP (b->enable_multibyte_characters)) | |
401 | BUF_DEC_POS (b, bytepos); | |
402 | else | |
403 | bytepos--; | |
d7760ca9 | 404 | |
00a9a935 RS |
405 | XMARKER (readcharfun)->bytepos = bytepos; |
406 | } | |
d7760ca9 | 407 | } |
cfff016d | 408 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
409 | { |
410 | read_from_string_index--; | |
411 | read_from_string_index_byte | |
412 | = string_char_to_byte (readcharfun, read_from_string_index); | |
413 | } | |
ad0153e4 RS |
414 | else if (EQ (readcharfun, Qlambda)) |
415 | read_bytecode_char (1); | |
078e7b4a JB |
416 | else if (EQ (readcharfun, Qget_file_char)) |
417 | ungetc (c, instream); | |
418 | else | |
419 | call1 (readcharfun, make_number (c)); | |
420 | } | |
421 | ||
abb13b09 CW |
422 | static Lisp_Object read_internal_start P_ ((Lisp_Object, Lisp_Object, |
423 | Lisp_Object)); | |
424 | static Lisp_Object read0 P_ ((Lisp_Object)); | |
177c0ea7 | 425 | static Lisp_Object read1 P_ ((Lisp_Object, int *, int)); |
abb13b09 CW |
426 | |
427 | static Lisp_Object read_list P_ ((int, Lisp_Object)); | |
428 | static Lisp_Object read_vector P_ ((Lisp_Object, int)); | |
429 | static int read_multibyte P_ ((int, Lisp_Object)); | |
430 | ||
431 | static Lisp_Object substitute_object_recurse P_ ((Lisp_Object, Lisp_Object, | |
432 | Lisp_Object)); | |
433 | static void substitute_object_in_subtree P_ ((Lisp_Object, | |
434 | Lisp_Object)); | |
435 | static void substitute_in_interval P_ ((INTERVAL, Lisp_Object)); | |
9e062b6c | 436 | |
078e7b4a | 437 | \f |
bed23cb2 | 438 | /* Get a character from the tty. */ |
078e7b4a | 439 | |
3d9b22be JB |
440 | extern Lisp_Object read_char (); |
441 | ||
f42be754 JB |
442 | /* Read input events until we get one that's acceptable for our purposes. |
443 | ||
444 | If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed | |
445 | until we get a character we like, and then stuffed into | |
446 | unread_switch_frame. | |
447 | ||
448 | If ASCII_REQUIRED is non-zero, we check function key events to see | |
449 | if the unmodified version of the symbol has a Qascii_character | |
450 | property, and use that character, if present. | |
451 | ||
452 | If ERROR_NONASCII is non-zero, we signal an error if the input we | |
453 | get isn't an ASCII character with modifiers. If it's zero but | |
454 | ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII | |
bb49a192 RS |
455 | character. |
456 | ||
457 | If INPUT_METHOD is nonzero, we invoke the current input method | |
50e48299 CY |
458 | if the character warrants that. |
459 | ||
460 | If SECONDS is a number, we wait that many seconds for input, and | |
461 | return Qnil if no input arrives within that time. */ | |
cc39bc38 | 462 | |
f42be754 | 463 | Lisp_Object |
bb49a192 | 464 | read_filtered_event (no_switch_frame, ascii_required, error_nonascii, |
50e48299 | 465 | input_method, seconds) |
bb49a192 | 466 | int no_switch_frame, ascii_required, error_nonascii, input_method; |
50e48299 | 467 | Lisp_Object seconds; |
f42be754 | 468 | { |
4332cf50 | 469 | Lisp_Object val, delayed_switch_frame; |
50e48299 | 470 | EMACS_TIME end_time; |
153a17b7 | 471 | |
5dbf89bc | 472 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
473 | if (display_hourglass_p) |
474 | cancel_hourglass (); | |
5dbf89bc | 475 | #endif |
177c0ea7 | 476 | |
153a17b7 | 477 | delayed_switch_frame = Qnil; |
f42be754 | 478 | |
50e48299 CY |
479 | /* Compute timeout. */ |
480 | if (NUMBERP (seconds)) | |
481 | { | |
482 | EMACS_TIME wait_time; | |
483 | int sec, usec; | |
51d8b30e | 484 | double duration = extract_float (seconds); |
50e48299 CY |
485 | |
486 | sec = (int) duration; | |
487 | usec = (duration - sec) * 1000000; | |
488 | EMACS_GET_TIME (end_time); | |
489 | EMACS_SET_SECS_USECS (wait_time, sec, usec); | |
490 | EMACS_ADD_TIME (end_time, end_time, wait_time); | |
491 | } | |
492 | ||
f42be754 JB |
493 | /* Read until we get an acceptable event. */ |
494 | retry: | |
50e48299 CY |
495 | val = read_char (0, 0, 0, (input_method ? Qnil : Qt), 0, |
496 | NUMBERP (seconds) ? &end_time : NULL); | |
f42be754 | 497 | |
cfff016d | 498 | if (BUFFERP (val)) |
6c82d689 KH |
499 | goto retry; |
500 | ||
f42be754 | 501 | /* switch-frame events are put off until after the next ASCII |
8e6208c5 | 502 | character. This is better than signaling an error just because |
f42be754 JB |
503 | the last characters were typed to a separate minibuffer frame, |
504 | for example. Eventually, some code which can deal with | |
505 | switch-frame events will read it and process it. */ | |
506 | if (no_switch_frame | |
507 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 508 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
509 | { |
510 | delayed_switch_frame = val; | |
511 | goto retry; | |
512 | } | |
513 | ||
50e48299 | 514 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
515 | { |
516 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 517 | if (SYMBOLP (val)) |
f42be754 | 518 | { |
95384e1e | 519 | Lisp_Object tem, tem1; |
f42be754 JB |
520 | tem = Fget (val, Qevent_symbol_element_mask); |
521 | if (!NILP (tem)) | |
522 | { | |
523 | tem1 = Fget (Fcar (tem), Qascii_character); | |
524 | /* Merge this symbol's modifier bits | |
525 | with the ASCII equivalent of its basic code. */ | |
526 | if (!NILP (tem1)) | |
baf69866 | 527 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
528 | } |
529 | } | |
177c0ea7 | 530 | |
f42be754 | 531 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 532 | if (!INTEGERP (val)) |
f42be754 JB |
533 | { |
534 | if (error_nonascii) | |
535 | { | |
1ec84625 | 536 | Vunread_command_events = Fcons (val, Qnil); |
f42be754 JB |
537 | error ("Non-character input-event"); |
538 | } | |
539 | else | |
540 | goto retry; | |
541 | } | |
542 | } | |
543 | ||
544 | if (! NILP (delayed_switch_frame)) | |
545 | unread_switch_frame = delayed_switch_frame; | |
546 | ||
67868d27 PJ |
547 | #if 0 |
548 | ||
5dbf89bc | 549 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
550 | if (display_hourglass_p) |
551 | start_hourglass (); | |
5dbf89bc | 552 | #endif |
67868d27 PJ |
553 | |
554 | #endif | |
555 | ||
f42be754 | 556 | return val; |
f42be754 JB |
557 | } |
558 | ||
50e48299 | 559 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
560 | doc: /* Read a character from the command input (keyboard or macro). |
561 | It is returned as a number. | |
562 | If the user generates an event which is not a character (i.e. a mouse | |
563 | click or function key event), `read-char' signals an error. As an | |
564 | exception, switch-frame events are put off until non-ASCII events can | |
565 | be read. | |
566 | If you want to read non-character events, or ignore them, call | |
567 | `read-event' or `read-char-exclusive' instead. | |
568 | ||
569 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
570 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
571 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
572 | is used for reading a character. |
573 | If the optional argument SECONDS is non-nil, it should be a number | |
574 | specifying the maximum number of seconds to wait for input. If no | |
575 | input arrives in that time, return nil. SECONDS may be a | |
576 | floating-point value. */) | |
577 | (prompt, inherit_input_method, seconds) | |
578 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 579 | { |
bb49a192 RS |
580 | if (! NILP (prompt)) |
581 | message_with_string ("%s", prompt, 0); | |
50e48299 | 582 | return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
583 | } |
584 | ||
50e48299 | 585 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
586 | doc: /* Read an event object from the input stream. |
587 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
588 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
589 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
590 | is used for reading a character. |
591 | If the optional argument SECONDS is non-nil, it should be a number | |
592 | specifying the maximum number of seconds to wait for input. If no | |
593 | input arrives in that time, return nil. SECONDS may be a | |
594 | floating-point value. */) | |
595 | (prompt, inherit_input_method, seconds) | |
596 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 597 | { |
bb49a192 RS |
598 | if (! NILP (prompt)) |
599 | message_with_string ("%s", prompt, 0); | |
50e48299 | 600 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
601 | } |
602 | ||
50e48299 | 603 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
604 | doc: /* Read a character from the command input (keyboard or macro). |
605 | It is returned as a number. Non-character events are ignored. | |
606 | ||
607 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
608 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
609 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
610 | is used for reading a character. |
611 | If the optional argument SECONDS is non-nil, it should be a number | |
612 | specifying the maximum number of seconds to wait for input. If no | |
613 | input arrives in that time, return nil. SECONDS may be a | |
614 | floating-point value. */) | |
615 | (prompt, inherit_input_method, seconds) | |
616 | Lisp_Object prompt, inherit_input_method, seconds; | |
078e7b4a | 617 | { |
bb49a192 RS |
618 | if (! NILP (prompt)) |
619 | message_with_string ("%s", prompt, 0); | |
50e48299 | 620 | return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a | 621 | } |
078e7b4a JB |
622 | |
623 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 PJ |
624 | doc: /* Don't use this yourself. */) |
625 | () | |
078e7b4a JB |
626 | { |
627 | register Lisp_Object val; | |
1805de4f | 628 | XSETINT (val, getc (instream)); |
078e7b4a JB |
629 | return val; |
630 | } | |
da84f340 GM |
631 | |
632 | ||
550a625e | 633 | \f |
da84f340 GM |
634 | /* Value is non-zero if the file asswociated with file descriptor FD |
635 | is a compiled Lisp file that's safe to load. Only files compiled | |
636 | with Emacs are safe to load. Files compiled with XEmacs can lead | |
637 | to a crash in Fbyte_code because of an incompatible change in the | |
638 | byte compiler. */ | |
639 | ||
640 | static int | |
641 | safe_to_load_p (fd) | |
642 | int fd; | |
643 | { | |
644 | char buf[512]; | |
645 | int nbytes, i; | |
646 | int safe_p = 1; | |
647 | ||
648 | /* Read the first few bytes from the file, and look for a line | |
649 | specifying the byte compiler version used. */ | |
650 | nbytes = emacs_read (fd, buf, sizeof buf - 1); | |
651 | if (nbytes > 0) | |
652 | { | |
653 | buf[nbytes] = '\0'; | |
654 | ||
655 | /* Skip to the next newline, skipping over the initial `ELC' | |
656 | with NUL bytes following it. */ | |
657 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) | |
658 | ; | |
659 | ||
660 | if (i < nbytes | |
661 | && fast_c_string_match_ignore_case (Vbytecomp_version_regexp, | |
662 | buf + i) < 0) | |
663 | safe_p = 0; | |
664 | } | |
665 | ||
666 | lseek (fd, 0, SEEK_SET); | |
667 | return safe_p; | |
668 | } | |
669 | ||
670 | ||
7ee3bd7b GM |
671 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
672 | after loading a file successfully. */ | |
673 | ||
674 | static Lisp_Object | |
675 | record_load_unwind (old) | |
676 | Lisp_Object old; | |
677 | { | |
678 | return Vloads_in_progress = old; | |
679 | } | |
680 | ||
164c8bfe RS |
681 | /* This handler function is used via internal_condition_case_1. */ |
682 | ||
683 | static Lisp_Object | |
684 | load_error_handler (data) | |
685 | Lisp_Object data; | |
686 | { | |
687 | return Qnil; | |
688 | } | |
7ee3bd7b | 689 | |
971a4293 LT |
690 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
691 | doc: /* Return the suffixes that `load' should try if a suffix is \ | |
692 | required. | |
693 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
694 | () | |
695 | { | |
696 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
697 | while (CONSP (suffixes)) | |
698 | { | |
699 | Lisp_Object exts = Vload_file_rep_suffixes; | |
700 | suffix = XCAR (suffixes); | |
701 | suffixes = XCDR (suffixes); | |
702 | while (CONSP (exts)) | |
703 | { | |
704 | ext = XCAR (exts); | |
705 | exts = XCDR (exts); | |
706 | lst = Fcons (concat2 (suffix, ext), lst); | |
707 | } | |
708 | } | |
709 | return Fnreverse (lst); | |
710 | } | |
711 | ||
f0a50954 | 712 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
713 | doc: /* Execute a file of Lisp code named FILE. |
714 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 LT |
715 | then try FILE unmodified (the exact suffixes in the exact order are |
716 | determined by `load-suffixes'). Environment variable references in | |
717 | FILE are replaced with their values by calling `substitute-in-file-name'. | |
5de38842 | 718 | This function searches the directories in `load-path'. |
971a4293 | 719 | |
5de38842 | 720 | If optional second arg NOERROR is non-nil, |
971a4293 | 721 | report no error if FILE doesn't exist. |
5de38842 | 722 | Print messages at start and end of loading unless |
971a4293 | 723 | optional third arg NOMESSAGE is non-nil. |
5de38842 | 724 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 725 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 726 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
727 | the suffix `.elc' or `.el'; don't accept just FILE unless |
728 | it ends in one of those suffixes or includes a directory name. | |
729 | ||
730 | If this function fails to find a file, it may look for different | |
731 | representations of that file before trying another file. | |
732 | It does so by adding the non-empty suffixes in `load-file-rep-suffixes' | |
733 | to the file name. Emacs uses this feature mainly to find compressed | |
734 | versions of files when Auto Compression mode is enabled. | |
735 | ||
736 | The exact suffixes that this function tries out, in the exact order, | |
737 | are given by the value of the variable `load-file-rep-suffixes' if | |
738 | NOSUFFIX is non-nil and by the return value of the function | |
739 | `get-load-suffixes' if MUST-SUFFIX is non-nil. If both NOSUFFIX and | |
740 | MUST-SUFFIX are nil, this function first tries out the latter suffixes | |
741 | and then the former. | |
0fc213e9 RS |
742 | |
743 | Loading a file records its definitions, and its `provide' and | |
744 | `require' calls, in an element of `load-history' whose | |
745 | car is the file name loaded. See `load-history'. | |
746 | ||
971a4293 | 747 | Return t if the file exists and loads successfully. */) |
5de38842 | 748 | (file, noerror, nomessage, nosuffix, must_suffix) |
f0a50954 | 749 | Lisp_Object file, noerror, nomessage, nosuffix, must_suffix; |
078e7b4a JB |
750 | { |
751 | register FILE *stream; | |
752 | register int fd = -1; | |
aed13378 | 753 | int count = SPECPDL_INDEX (); |
078e7b4a | 754 | Lisp_Object temp; |
6bb6da3e AM |
755 | struct gcpro gcpro1, gcpro2, gcpro3; |
756 | Lisp_Object found, efound, hist_file_name; | |
04fc68e7 RS |
757 | /* 1 means we printed the ".el is newer" message. */ |
758 | int newer = 0; | |
759 | /* 1 means we are loading a compiled file. */ | |
760 | int compiled = 0; | |
c2225d00 | 761 | Lisp_Object handler; |
456c67a4 | 762 | int safe_p = 1; |
229ba775 | 763 | char *fmode = "r"; |
6bb6da3e | 764 | Lisp_Object tmp[2]; |
317073d5 | 765 | #ifdef DOS_NT |
229ba775 | 766 | fmode = "rt"; |
317073d5 | 767 | #endif /* DOS_NT */ |
078e7b4a | 768 | |
b7826503 | 769 | CHECK_STRING (file); |
078e7b4a | 770 | |
c2225d00 | 771 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
772 | /* This shouldn't be necessary any more now that `openp' handles it right. |
773 | handler = Ffind_file_name_handler (file, Qload); | |
774 | if (!NILP (handler)) | |
775 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 776 | |
07a0bda3 RS |
777 | /* Do this after the handler to avoid |
778 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
779 | (Below here, we care only whether they are nil or not.) |
780 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 781 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
782 | everywhere, it accidentally stayed here. Since then, enough people |
783 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
784 | that it seemed risky to remove. */ | |
164c8bfe RS |
785 | if (! NILP (noerror)) |
786 | { | |
787 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
788 | Qt, load_error_handler); | |
789 | if (NILP (file)) | |
790 | return Qnil; | |
791 | } | |
792 | else | |
793 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 794 | |
07a0bda3 | 795 | |
078e7b4a JB |
796 | /* Avoid weird lossage with null string as arg, |
797 | since it would try to load a directory as a Lisp file */ | |
d5db4077 | 798 | if (SCHARS (file) > 0) |
078e7b4a | 799 | { |
d5db4077 | 800 | int size = SBYTES (file); |
211f7dcd | 801 | |
0fc213e9 RS |
802 | found = Qnil; |
803 | GCPRO2 (file, found); | |
211f7dcd RS |
804 | |
805 | if (! NILP (must_suffix)) | |
806 | { | |
807 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
808 | if (size > 3 | |
d5db4077 | 809 | && !strcmp (SDATA (file) + size - 3, ".el")) |
211f7dcd RS |
810 | must_suffix = Qnil; |
811 | else if (size > 4 | |
d5db4077 | 812 | && !strcmp (SDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
813 | must_suffix = Qnil; |
814 | /* Don't insist on adding a suffix | |
815 | if the argument includes a directory name. */ | |
816 | else if (! NILP (Ffile_name_directory (file))) | |
817 | must_suffix = Qnil; | |
818 | } | |
819 | ||
f0a50954 | 820 | fd = openp (Vload_path, file, |
e61b9b87 | 821 | (!NILP (nosuffix) ? Qnil |
971a4293 LT |
822 | : !NILP (must_suffix) ? Fget_load_suffixes () |
823 | : Fappend (2, (tmp[0] = Fget_load_suffixes (), | |
824 | tmp[1] = Vload_file_rep_suffixes, | |
e61b9b87 | 825 | tmp))), |
86d00812 | 826 | &found, Qnil); |
5a6e5452 | 827 | UNGCPRO; |
078e7b4a JB |
828 | } |
829 | ||
96dc0f4e | 830 | if (fd == -1) |
078e7b4a | 831 | { |
265a9e55 | 832 | if (NILP (noerror)) |
336d4a9c KS |
833 | xsignal2 (Qfile_error, build_string ("Cannot open load file"), file); |
834 | return Qnil; | |
078e7b4a JB |
835 | } |
836 | ||
ba0d1195 | 837 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
838 | if (EQ (Qt, Vuser_init_file)) |
839 | Vuser_init_file = found; | |
840 | ||
96dc0f4e MB |
841 | /* If FD is -2, that means openp found a magic file. */ |
842 | if (fd == -2) | |
74549846 | 843 | { |
5e24a1f7 KH |
844 | if (NILP (Fequal (found, file))) |
845 | /* If FOUND is a different file name from FILE, | |
846 | find its handler even if we have already inhibited | |
847 | the `load' operation on FILE. */ | |
848 | handler = Ffind_file_name_handler (found, Qt); | |
849 | else | |
850 | handler = Ffind_file_name_handler (found, Qload); | |
851 | if (! NILP (handler)) | |
852 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
74549846 RS |
853 | } |
854 | ||
550a625e GM |
855 | /* Check if we're stuck in a recursive load cycle. |
856 | ||
857 | 2000-09-21: It's not possible to just check for the file loaded | |
858 | being a member of Vloads_in_progress. This fails because of the | |
859 | way the byte compiler currently works; `provide's are not | |
860 | evaluted, see font-lock.el/jit-lock.el as an example. This | |
861 | leads to a certain amount of ``normal'' recursion. | |
862 | ||
863 | Also, just loading a file recursively is not always an error in | |
864 | the general case; the second load may do something different. */ | |
3ba6fd9a RS |
865 | { |
866 | int count = 0; | |
867 | Lisp_Object tem; | |
868 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
869 | if (!NILP (Fequal (found, XCAR (tem)))) | |
870 | count++; | |
871 | if (count > 3) | |
3fdf12ca EZ |
872 | { |
873 | if (fd >= 0) | |
874 | emacs_close (fd); | |
336d4a9c | 875 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); |
3fdf12ca | 876 | } |
3ba6fd9a RS |
877 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
878 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
879 | } | |
7ee3bd7b | 880 | |
6bb6da3e AM |
881 | /* Get the name for load-history. */ |
882 | hist_file_name = (! NILP (Vpurify_flag) | |
883 | ? Fconcat (2, (tmp[0] = Ffile_name_directory (file), | |
884 | tmp[1] = Ffile_name_nondirectory (found), | |
885 | tmp)) | |
886 | : found) ; | |
887 | ||
a1c89c0a | 888 | if (!bcmp (SDATA (found) + SBYTES (found) - 4, |
96dc0f4e MB |
889 | ".elc", 4)) |
890 | /* Load .elc files directly, but not when they are | |
891 | remote and have no handler! */ | |
078e7b4a | 892 | { |
96dc0f4e | 893 | if (fd != -2) |
da84f340 | 894 | { |
96dc0f4e MB |
895 | struct stat s1, s2; |
896 | int result; | |
da84f340 | 897 | |
6bb6da3e | 898 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 899 | |
96dc0f4e MB |
900 | if (!safe_to_load_p (fd)) |
901 | { | |
902 | safe_p = 0; | |
903 | if (!load_dangerous_libraries) | |
e63304b7 DL |
904 | { |
905 | if (fd >= 0) | |
906 | emacs_close (fd); | |
907 | error ("File `%s' was not compiled in Emacs", | |
908 | SDATA (found)); | |
909 | } | |
96dc0f4e MB |
910 | else if (!NILP (nomessage)) |
911 | message_with_string ("File `%s' not compiled in Emacs", found, 1); | |
912 | } | |
04fc68e7 | 913 | |
96dc0f4e MB |
914 | compiled = 1; |
915 | ||
eb191db2 EZ |
916 | efound = ENCODE_FILE (found); |
917 | ||
26fbf20b | 918 | #ifdef DOS_NT |
96dc0f4e | 919 | fmode = "rb"; |
26fbf20b | 920 | #endif /* DOS_NT */ |
d5db4077 | 921 | stat ((char *)SDATA (efound), &s1); |
a1c89c0a | 922 | SSET (efound, SBYTES (efound) - 1, 0); |
d5db4077 | 923 | result = stat ((char *)SDATA (efound), &s2); |
a1c89c0a | 924 | SSET (efound, SBYTES (efound) - 1, 'c'); |
eb191db2 | 925 | |
96dc0f4e MB |
926 | if (result >= 0 && (unsigned) s1.st_mtime < (unsigned) s2.st_mtime) |
927 | { | |
928 | /* Make the progress messages mention that source is newer. */ | |
929 | newer = 1; | |
04fc68e7 | 930 | |
96dc0f4e | 931 | /* If we won't print another message, mention this anyway. */ |
714d8c39 GM |
932 | if (!NILP (nomessage)) |
933 | { | |
0fc213e9 RS |
934 | Lisp_Object msg_file; |
935 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 936 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 937 | msg_file, 1); |
714d8c39 | 938 | } |
96dc0f4e | 939 | } |
0fc213e9 | 940 | UNGCPRO; |
51ac6f83 | 941 | } |
078e7b4a | 942 | } |
fe0e03f3 KH |
943 | else |
944 | { | |
945 | /* We are loading a source file (*.el). */ | |
946 | if (!NILP (Vload_source_file_function)) | |
947 | { | |
7ee3bd7b | 948 | Lisp_Object val; |
96dc0f4e MB |
949 | |
950 | if (fd >= 0) | |
68c45bf0 | 951 | emacs_close (fd); |
6bb6da3e | 952 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b GM |
953 | NILP (noerror) ? Qnil : Qt, |
954 | NILP (nomessage) ? Qnil : Qt); | |
955 | return unbind_to (count, val); | |
fe0e03f3 KH |
956 | } |
957 | } | |
078e7b4a | 958 | |
6bb6da3e | 959 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 960 | |
229ba775 | 961 | #ifdef WINDOWSNT |
68c45bf0 | 962 | emacs_close (fd); |
eb191db2 | 963 | efound = ENCODE_FILE (found); |
d5db4077 | 964 | stream = fopen ((char *) SDATA (efound), fmode); |
229ba775 EZ |
965 | #else /* not WINDOWSNT */ |
966 | stream = fdopen (fd, fmode); | |
967 | #endif /* not WINDOWSNT */ | |
078e7b4a JB |
968 | if (stream == 0) |
969 | { | |
68c45bf0 | 970 | emacs_close (fd); |
d5db4077 | 971 | error ("Failure to create stdio stream for %s", SDATA (file)); |
078e7b4a JB |
972 | } |
973 | ||
4b104c41 RS |
974 | if (! NILP (Vpurify_flag)) |
975 | Vpreloaded_file_list = Fcons (file, Vpreloaded_file_list); | |
976 | ||
04fc68e7 RS |
977 | if (NILP (nomessage)) |
978 | { | |
da84f340 GM |
979 | if (!safe_p) |
980 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
981 | file, 1); | |
982 | else if (!compiled) | |
e28552a4 | 983 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 984 | else if (newer) |
e28552a4 RS |
985 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
986 | file, 1); | |
db5cae4b | 987 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 988 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 989 | } |
078e7b4a | 990 | |
c04d9e70 | 991 | record_unwind_protect (load_unwind, make_save_value (stream, 0)); |
d2c6be7f | 992 | record_unwind_protect (load_descriptor_unwind, load_descriptor_list); |
20ea2964 | 993 | specbind (Qload_file_name, found); |
74549846 | 994 | specbind (Qinhibit_file_name_operation, Qnil); |
d2c6be7f RS |
995 | load_descriptor_list |
996 | = Fcons (make_number (fileno (stream)), load_descriptor_list); | |
078e7b4a | 997 | load_in_progress++; |
6bb6da3e | 998 | readevalloop (Qget_file_char, stream, hist_file_name, |
0fc213e9 | 999 | Feval, 0, Qnil, Qnil, Qnil, Qnil); |
078e7b4a JB |
1000 | unbind_to (count, Qnil); |
1001 | ||
6bb6da3e AM |
1002 | /* Run any eval-after-load forms for this file */ |
1003 | if (NILP (Vpurify_flag) | |
1004 | && (!NILP (Ffboundp (Qdo_after_load_evaluation)))) | |
1005 | call1 (Qdo_after_load_evaluation, hist_file_name) ; | |
1006 | ||
078e7b4a JB |
1007 | UNGCPRO; |
1008 | ||
b2a30870 RS |
1009 | if (saved_doc_string) |
1010 | free (saved_doc_string); | |
1011 | saved_doc_string = 0; | |
1012 | saved_doc_string_size = 0; | |
1013 | ||
c15cfd1f | 1014 | if (prev_saved_doc_string) |
3cb65b0e | 1015 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1016 | prev_saved_doc_string = 0; |
1017 | prev_saved_doc_string_size = 0; | |
1018 | ||
265a9e55 | 1019 | if (!noninteractive && NILP (nomessage)) |
04fc68e7 | 1020 | { |
da84f340 GM |
1021 | if (!safe_p) |
1022 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1023 | file, 1); | |
1024 | else if (!compiled) | |
e28552a4 | 1025 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1026 | else if (newer) |
e28552a4 RS |
1027 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1028 | file, 1); | |
db5cae4b | 1029 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1030 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1031 | } |
7ee3bd7b | 1032 | |
11810d78 SM |
1033 | if (!NILP (Fequal (build_string ("obsolete"), |
1034 | Ffile_name_nondirectory | |
1035 | (Fdirectory_file_name (Ffile_name_directory (found)))))) | |
1036 | message_with_string ("Package %s is obsolete", file, 1); | |
1037 | ||
078e7b4a JB |
1038 | return Qt; |
1039 | } | |
1040 | ||
1041 | static Lisp_Object | |
ebfe97a2 KS |
1042 | load_unwind (arg) /* used as unwind-protect function in load */ |
1043 | Lisp_Object arg; | |
078e7b4a | 1044 | { |
ebfe97a2 KS |
1045 | FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer; |
1046 | if (stream != NULL) | |
1047 | fclose (stream); | |
078e7b4a JB |
1048 | if (--load_in_progress < 0) load_in_progress = 0; |
1049 | return Qnil; | |
1050 | } | |
1051 | ||
d2c6be7f RS |
1052 | static Lisp_Object |
1053 | load_descriptor_unwind (oldlist) | |
1054 | Lisp_Object oldlist; | |
1055 | { | |
1056 | load_descriptor_list = oldlist; | |
838abf56 | 1057 | return Qnil; |
d2c6be7f RS |
1058 | } |
1059 | ||
1060 | /* Close all descriptors in use for Floads. | |
1061 | This is used when starting a subprocess. */ | |
1062 | ||
1063 | void | |
1064 | close_load_descs () | |
1065 | { | |
f3849f25 | 1066 | #ifndef WINDOWSNT |
d2c6be7f | 1067 | Lisp_Object tail; |
c1d497be | 1068 | for (tail = load_descriptor_list; !NILP (tail); tail = XCDR (tail)) |
68c45bf0 | 1069 | emacs_close (XFASTINT (XCAR (tail))); |
f3849f25 | 1070 | #endif |
d2c6be7f | 1071 | } |
078e7b4a JB |
1072 | \f |
1073 | static int | |
1074 | complete_filename_p (pathname) | |
1075 | Lisp_Object pathname; | |
1076 | { | |
4b2dd274 | 1077 | register const unsigned char *s = SDATA (pathname); |
317073d5 | 1078 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1079 | || (SCHARS (pathname) > 2 |
317073d5 | 1080 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2])) |
078e7b4a JB |
1081 | #ifdef ALTOS |
1082 | || *s == '@' | |
1083 | #endif | |
1084 | #ifdef VMS | |
1085 | || index (s, ':') | |
1086 | #endif /* VMS */ | |
1087 | ); | |
1088 | } | |
1089 | ||
86d00812 SM |
1090 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1091 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1092 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1093 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1094 | file name when searching. | |
1095 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
1096 | PREDICATE can also be an integer to pass to the access(2) function, | |
1097 | in which case file-name-handlers are ignored. */) | |
1098 | (filename, path, suffixes, predicate) | |
1099 | Lisp_Object filename, path, suffixes, predicate; | |
1100 | { | |
1101 | Lisp_Object file; | |
1102 | int fd = openp (path, filename, suffixes, &file, predicate); | |
1103 | if (NILP (predicate) && fd > 0) | |
1104 | close (fd); | |
1105 | return file; | |
1106 | } | |
1107 | ||
1108 | ||
078e7b4a JB |
1109 | /* Search for a file whose name is STR, looking in directories |
1110 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
078e7b4a JB |
1111 | On success, returns a file descriptor. On failure, returns -1. |
1112 | ||
e61b9b87 SM |
1113 | SUFFIXES is a list of strings containing possible suffixes. |
1114 | The empty suffix is automatically added iff the list is empty. | |
1115 | ||
86d00812 SM |
1116 | PREDICATE non-nil means don't open the files, |
1117 | just look for one that satisfies the predicate. In this case, | |
1118 | returns 1 on success. The predicate can be a lisp function or | |
1119 | an integer to pass to `access' (in which case file-name-handlers | |
1120 | are ignored). | |
078e7b4a JB |
1121 | |
1122 | If STOREPTR is nonzero, it points to a slot where the name of | |
1123 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1124 | nil is stored there on failure. |
1125 | ||
96dc0f4e | 1126 | If the file we find is remote, return -2 |
86d00812 | 1127 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1128 | |
1129 | int | |
86d00812 | 1130 | openp (path, str, suffixes, storeptr, predicate) |
078e7b4a | 1131 | Lisp_Object path, str; |
e61b9b87 | 1132 | Lisp_Object suffixes; |
078e7b4a | 1133 | Lisp_Object *storeptr; |
86d00812 | 1134 | Lisp_Object predicate; |
078e7b4a JB |
1135 | { |
1136 | register int fd; | |
1137 | int fn_size = 100; | |
1138 | char buf[100]; | |
1139 | register char *fn = buf; | |
1140 | int absolute = 0; | |
1141 | int want_size; | |
74549846 | 1142 | Lisp_Object filename; |
078e7b4a | 1143 | struct stat st; |
eb191db2 EZ |
1144 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1145 | Lisp_Object string, tail, encoded_fn; | |
e61b9b87 SM |
1146 | int max_suffix_len = 0; |
1147 | ||
6f8eafd1 SM |
1148 | CHECK_STRING (str); |
1149 | ||
e61b9b87 SM |
1150 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1151 | { | |
f5df591a | 1152 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1153 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1154 | SBYTES (XCAR (tail))); |
e61b9b87 | 1155 | } |
078e7b4a | 1156 | |
8b9d426a | 1157 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1158 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1159 | ||
078e7b4a JB |
1160 | if (storeptr) |
1161 | *storeptr = Qnil; | |
1162 | ||
1163 | if (complete_filename_p (str)) | |
1164 | absolute = 1; | |
1165 | ||
e61b9b87 | 1166 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1167 | { |
e61b9b87 | 1168 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a JB |
1169 | if (!complete_filename_p (filename)) |
1170 | /* If there are non-absolute elts in PATH (eg ".") */ | |
1171 | /* Of course, this could conceivably lose if luser sets | |
1172 | default-directory to be something non-absolute... */ | |
1173 | { | |
1174 | filename = Fexpand_file_name (filename, current_buffer->directory); | |
1175 | if (!complete_filename_p (filename)) | |
1176 | /* Give up on this path element! */ | |
1177 | continue; | |
1178 | } | |
1179 | ||
1180 | /* Calculate maximum size of any filename made from | |
1181 | this path element/specified file name and any possible suffix. */ | |
d5db4077 | 1182 | want_size = max_suffix_len + SBYTES (filename) + 1; |
078e7b4a JB |
1183 | if (fn_size < want_size) |
1184 | fn = (char *) alloca (fn_size = 100 + want_size); | |
1185 | ||
078e7b4a | 1186 | /* Loop over suffixes. */ |
971a4293 | 1187 | for (tail = NILP (suffixes) ? Fcons (build_string (""), Qnil) : suffixes; |
e61b9b87 | 1188 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1189 | { |
d5db4077 | 1190 | int lsuffix = SBYTES (XCAR (tail)); |
74549846 | 1191 | Lisp_Object handler; |
eb191db2 | 1192 | int exists; |
078e7b4a | 1193 | |
c49afcd7 RS |
1194 | /* Concatenate path element/specified name with the suffix. |
1195 | If the directory starts with /:, remove that. */ | |
d5db4077 KR |
1196 | if (SCHARS (filename) > 2 |
1197 | && SREF (filename, 0) == '/' | |
1198 | && SREF (filename, 1) == ':') | |
c49afcd7 | 1199 | { |
d5db4077 KR |
1200 | strncpy (fn, SDATA (filename) + 2, |
1201 | SBYTES (filename) - 2); | |
1202 | fn[SBYTES (filename) - 2] = 0; | |
c49afcd7 RS |
1203 | } |
1204 | else | |
1205 | { | |
d5db4077 KR |
1206 | strncpy (fn, SDATA (filename), |
1207 | SBYTES (filename)); | |
1208 | fn[SBYTES (filename)] = 0; | |
c49afcd7 RS |
1209 | } |
1210 | ||
078e7b4a | 1211 | if (lsuffix != 0) /* Bug happens on CCI if lsuffix is 0. */ |
d5db4077 | 1212 | strncat (fn, SDATA (XCAR (tail)), lsuffix); |
eb191db2 | 1213 | |
74549846 | 1214 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1215 | /* We used to only check for handlers on non-absolute file names: |
1216 | if (absolute) | |
1217 | handler = Qnil; | |
1218 | else | |
1219 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1220 | It's not clear why that was the case and it breaks things like | |
1221 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
eb191db2 | 1222 | string = build_string (fn); |
4773b8ca | 1223 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1224 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1225 | { | |
1226 | if (NILP (predicate)) | |
1227 | exists = !NILP (Ffile_readable_p (string)); | |
1228 | else | |
1229 | exists = !NILP (call1 (predicate, string)); | |
eb191db2 | 1230 | if (exists && !NILP (Ffile_directory_p (string))) |
74549846 RS |
1231 | exists = 0; |
1232 | ||
1233 | if (exists) | |
078e7b4a JB |
1234 | { |
1235 | /* We succeeded; return this descriptor and filename. */ | |
1236 | if (storeptr) | |
eb191db2 | 1237 | *storeptr = string; |
5ef2a3c0 | 1238 | UNGCPRO; |
96dc0f4e | 1239 | return -2; |
74549846 RS |
1240 | } |
1241 | } | |
1242 | else | |
1243 | { | |
4b2dd274 | 1244 | const char *pfn; |
eb191db2 EZ |
1245 | |
1246 | encoded_fn = ENCODE_FILE (string); | |
d5db4077 | 1247 | pfn = SDATA (encoded_fn); |
eb191db2 EZ |
1248 | exists = (stat (pfn, &st) >= 0 |
1249 | && (st.st_mode & S_IFMT) != S_IFDIR); | |
74549846 RS |
1250 | if (exists) |
1251 | { | |
1252 | /* Check that we can access or open it. */ | |
86d00812 SM |
1253 | if (NATNUMP (predicate)) |
1254 | fd = (access (pfn, XFASTINT (predicate)) == 0) ? 1 : -1; | |
74549846 | 1255 | else |
eb191db2 | 1256 | fd = emacs_open (pfn, O_RDONLY, 0); |
74549846 RS |
1257 | |
1258 | if (fd >= 0) | |
1259 | { | |
1260 | /* We succeeded; return this descriptor and filename. */ | |
1261 | if (storeptr) | |
eb191db2 | 1262 | *storeptr = string; |
74549846 RS |
1263 | UNGCPRO; |
1264 | return fd; | |
1265 | } | |
078e7b4a JB |
1266 | } |
1267 | } | |
078e7b4a | 1268 | } |
5a6e5452 | 1269 | if (absolute) |
5ef2a3c0 | 1270 | break; |
078e7b4a JB |
1271 | } |
1272 | ||
5ef2a3c0 KH |
1273 | UNGCPRO; |
1274 | return -1; | |
078e7b4a JB |
1275 | } |
1276 | ||
1277 | \f | |
ae321d28 RS |
1278 | /* Merge the list we've accumulated of globals from the current input source |
1279 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1280 | the source has an associated file name or not. |
1281 | ||
1282 | FILENAME is the file name that we are loading from. | |
1283 | ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */ | |
ae321d28 RS |
1284 | |
1285 | static void | |
b502a9a1 RS |
1286 | build_load_history (filename, entire) |
1287 | Lisp_Object filename; | |
1288 | int entire; | |
ae321d28 RS |
1289 | { |
1290 | register Lisp_Object tail, prev, newelt; | |
1291 | register Lisp_Object tem, tem2; | |
b502a9a1 | 1292 | register int foundit = 0; |
ae321d28 RS |
1293 | |
1294 | tail = Vload_history; | |
1295 | prev = Qnil; | |
b502a9a1 | 1296 | |
86d00812 | 1297 | while (CONSP (tail)) |
ae321d28 | 1298 | { |
86d00812 | 1299 | tem = XCAR (tail); |
ae321d28 RS |
1300 | |
1301 | /* Find the feature's previous assoc list... */ | |
b502a9a1 | 1302 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1303 | { |
1304 | foundit = 1; | |
1305 | ||
b502a9a1 RS |
1306 | /* If we're loading the entire file, remove old data. */ |
1307 | if (entire) | |
86d00812 | 1308 | { |
ae321d28 | 1309 | if (NILP (prev)) |
86d00812 | 1310 | Vload_history = XCDR (tail); |
ae321d28 | 1311 | else |
86d00812 | 1312 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1313 | } |
1314 | ||
1315 | /* Otherwise, cons on new symbols that are not already members. */ | |
1316 | else | |
1317 | { | |
1318 | tem2 = Vcurrent_load_list; | |
1319 | ||
1320 | while (CONSP (tem2)) | |
1321 | { | |
86d00812 | 1322 | newelt = XCAR (tem2); |
ae321d28 | 1323 | |
d642e4f9 | 1324 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1325 | Fsetcar (tail, Fcons (XCAR (tem), |
1326 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1327 | |
86d00812 | 1328 | tem2 = XCDR (tem2); |
ae321d28 RS |
1329 | QUIT; |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | else | |
1334 | prev = tail; | |
86d00812 | 1335 | tail = XCDR (tail); |
ae321d28 RS |
1336 | QUIT; |
1337 | } | |
1338 | ||
b502a9a1 RS |
1339 | /* If we're loading an entire file, cons the new assoc onto the |
1340 | front of load-history, the most-recently-loaded position. Also | |
1341 | do this if we didn't find an existing member for the file. */ | |
1342 | if (entire || !foundit) | |
8a1f1537 RS |
1343 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1344 | Vload_history); | |
ae321d28 RS |
1345 | } |
1346 | ||
078e7b4a | 1347 | Lisp_Object |
232ccf27 DL |
1348 | unreadpure (junk) /* Used as unwind-protect function in readevalloop */ |
1349 | Lisp_Object junk; | |
078e7b4a JB |
1350 | { |
1351 | read_pure = 0; | |
1352 | return Qnil; | |
1353 | } | |
1354 | ||
94e554db RS |
1355 | static Lisp_Object |
1356 | readevalloop_1 (old) | |
1357 | Lisp_Object old; | |
1358 | { | |
1359 | load_convert_to_unibyte = ! NILP (old); | |
1360 | return Qnil; | |
1361 | } | |
1362 | ||
9c97398c GM |
1363 | /* Signal an `end-of-file' error, if possible with file name |
1364 | information. */ | |
1365 | ||
1366 | static void | |
1367 | end_of_file_error () | |
1368 | { | |
1369 | Lisp_Object data; | |
1370 | ||
1371 | if (STRINGP (Vload_file_name)) | |
336d4a9c | 1372 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1373 | |
336d4a9c | 1374 | xsignal0 (Qend_of_file); |
9c97398c GM |
1375 | } |
1376 | ||
94e554db | 1377 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1378 | for this invocation. |
4c03c46d | 1379 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1380 | |
1381 | START, END specify region to read in current buffer (from eval-region). | |
1382 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1383 | |
078e7b4a | 1384 | static void |
4c03c46d KS |
1385 | readevalloop (readcharfun, stream, sourcename, evalfun, |
1386 | printflag, unibyte, readfun, start, end) | |
078e7b4a | 1387 | Lisp_Object readcharfun; |
ae321d28 RS |
1388 | FILE *stream; |
1389 | Lisp_Object sourcename; | |
078e7b4a JB |
1390 | Lisp_Object (*evalfun) (); |
1391 | int printflag; | |
976350af | 1392 | Lisp_Object unibyte, readfun; |
4c03c46d | 1393 | Lisp_Object start, end; |
078e7b4a JB |
1394 | { |
1395 | register int c; | |
1396 | register Lisp_Object val; | |
aed13378 | 1397 | int count = SPECPDL_INDEX (); |
0a37f512 | 1398 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1399 | struct buffer *b = 0; |
f38952fe | 1400 | int continue_reading_p; |
d11db2c8 RS |
1401 | /* Nonzero if reading an entire buffer. */ |
1402 | int whole_buffer = 0; | |
1403 | /* 1 on the first time around. */ | |
1404 | int first_sexp = 1; | |
1405 | ||
1406 | if (MARKERP (readcharfun)) | |
1407 | { | |
1408 | if (NILP (start)) | |
8878319c | 1409 | start = readcharfun; |
d11db2c8 | 1410 | } |
49cf7ff4 RS |
1411 | |
1412 | if (BUFFERP (readcharfun)) | |
1413 | b = XBUFFER (readcharfun); | |
1414 | else if (MARKERP (readcharfun)) | |
1415 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1416 | |
1ed7b9ae RS |
1417 | /* We assume START is nil when input is not from a buffer. */ |
1418 | if (! NILP (start) && !b) | |
1419 | abort (); | |
1420 | ||
0a37f512 | 1421 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1422 | specbind (Qcurrent_load_list, Qnil); |
94e554db RS |
1423 | record_unwind_protect (readevalloop_1, load_convert_to_unibyte ? Qt : Qnil); |
1424 | load_convert_to_unibyte = !NILP (unibyte); | |
078e7b4a | 1425 | |
00a9a935 | 1426 | readchar_backlog = -1; |
6f7f43d5 | 1427 | |
0a37f512 | 1428 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1429 | |
6bb6da3e AM |
1430 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
1431 | if (NILP (Vpurify_flag) | |
91fe9496 SM |
1432 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1433 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1434 | sourcename = call1 (Qfile_truename, sourcename) ; |
1435 | ||
ae321d28 RS |
1436 | LOADHIST_ATTACH (sourcename); |
1437 | ||
f38952fe GM |
1438 | continue_reading_p = 1; |
1439 | while (continue_reading_p) | |
078e7b4a | 1440 | { |
4c03c46d KS |
1441 | int count1 = SPECPDL_INDEX (); |
1442 | ||
49cf7ff4 RS |
1443 | if (b != 0 && NILP (b->name)) |
1444 | error ("Reading from killed buffer"); | |
1445 | ||
4c03c46d KS |
1446 | if (!NILP (start)) |
1447 | { | |
721b7d9e RS |
1448 | /* Switch to the buffer we are reading from. */ |
1449 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1450 | set_buffer_internal (b); | |
1451 | ||
1452 | /* Save point in it. */ | |
4c03c46d | 1453 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1454 | /* Save ZV in it. */ |
4c03c46d | 1455 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1456 | /* Those get unbound after we read one expression. */ |
1457 | ||
1458 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1459 | Fgoto_char (start); |
d11db2c8 RS |
1460 | if (!NILP (end)) |
1461 | Fnarrow_to_region (make_number (BEGV), end); | |
1462 | ||
1463 | /* Just for cleanliness, convert END to a marker | |
1464 | if it is an integer. */ | |
1465 | if (INTEGERP (end)) | |
1466 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1467 | } |
1468 | ||
d11db2c8 RS |
1469 | /* On the first cycle, we can easily test here |
1470 | whether we are reading the whole buffer. */ | |
1471 | if (b && first_sexp) | |
1472 | whole_buffer = (PT == BEG && ZV == Z); | |
1473 | ||
078e7b4a | 1474 | instream = stream; |
4c03c46d | 1475 | read_next: |
078e7b4a JB |
1476 | c = READCHAR; |
1477 | if (c == ';') | |
1478 | { | |
1479 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1480 | goto read_next; |
1481 | } | |
1482 | if (c < 0) | |
1483 | { | |
1484 | unbind_to (count1, Qnil); | |
1485 | break; | |
078e7b4a | 1486 | } |
6069d957 RS |
1487 | |
1488 | /* Ignore whitespace here, so we can detect eof. */ | |
1489 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r') | |
4c03c46d | 1490 | goto read_next; |
078e7b4a | 1491 | |
265a9e55 | 1492 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a JB |
1493 | { |
1494 | record_unwind_protect (unreadpure, Qnil); | |
1495 | val = read_list (-1, readcharfun); | |
078e7b4a JB |
1496 | } |
1497 | else | |
1498 | { | |
1499 | UNREAD (c); | |
4ad679f9 | 1500 | read_objects = Qnil; |
f38952fe GM |
1501 | if (!NILP (readfun)) |
1502 | { | |
1503 | val = call1 (readfun, readcharfun); | |
1504 | ||
1505 | /* If READCHARFUN has set point to ZV, we should | |
1506 | stop reading, even if the form read sets point | |
1507 | to a different value when evaluated. */ | |
1508 | if (BUFFERP (readcharfun)) | |
1509 | { | |
1510 | struct buffer *b = XBUFFER (readcharfun); | |
1511 | if (BUF_PT (b) == BUF_ZV (b)) | |
1512 | continue_reading_p = 0; | |
1513 | } | |
1514 | } | |
976350af | 1515 | else if (! NILP (Vload_read_function)) |
84a15045 | 1516 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1517 | else |
abb13b09 | 1518 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1519 | } |
1520 | ||
4c03c46d KS |
1521 | if (!NILP (start) && continue_reading_p) |
1522 | start = Fpoint_marker (); | |
d11db2c8 RS |
1523 | |
1524 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1525 | unbind_to (count1, Qnil); |
1526 | ||
d11db2c8 | 1527 | /* Now eval what we just read. */ |
078e7b4a | 1528 | val = (*evalfun) (val); |
f38952fe | 1529 | |
078e7b4a JB |
1530 | if (printflag) |
1531 | { | |
1532 | Vvalues = Fcons (val, Vvalues); | |
1533 | if (EQ (Vstandard_output, Qt)) | |
1534 | Fprin1 (val, Qnil); | |
1535 | else | |
1536 | Fprint (val, Qnil); | |
1537 | } | |
d11db2c8 RS |
1538 | |
1539 | first_sexp = 0; | |
078e7b4a JB |
1540 | } |
1541 | ||
8878319c | 1542 | build_load_history (sourcename, |
d11db2c8 | 1543 | stream || whole_buffer); |
b502a9a1 | 1544 | |
ae321d28 RS |
1545 | UNGCPRO; |
1546 | ||
078e7b4a JB |
1547 | unbind_to (count, Qnil); |
1548 | } | |
1549 | ||
1076254d | 1550 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 PJ |
1551 | doc: /* Execute the current buffer as Lisp code. |
1552 | Programs can pass two arguments, BUFFER and PRINTFLAG. | |
1553 | BUFFER is the buffer to evaluate (nil means use current buffer). | |
1554 | PRINTFLAG controls printing of output: | |
51d8b30e | 1555 | A value of nil means discard it; anything else is stream for print. |
5de38842 PJ |
1556 | |
1557 | If the optional third argument FILENAME is non-nil, | |
1558 | it specifies the file name to use for `load-history'. | |
1559 | The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte' | |
1560 | for this invocation. | |
1561 | ||
3f9ab804 | 1562 | The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that |
5de38842 PJ |
1563 | `print' and related functions should work normally even if PRINTFLAG is nil. |
1564 | ||
1565 | This function preserves the position of point. */) | |
1566 | (buffer, printflag, filename, unibyte, do_allow_print) | |
1076254d | 1567 | Lisp_Object buffer, printflag, filename, unibyte, do_allow_print; |
228d4b1c | 1568 | { |
aed13378 | 1569 | int count = SPECPDL_INDEX (); |
228d4b1c JA |
1570 | Lisp_Object tem, buf; |
1571 | ||
9391b698 | 1572 | if (NILP (buffer)) |
228d4b1c JA |
1573 | buf = Fcurrent_buffer (); |
1574 | else | |
9391b698 | 1575 | buf = Fget_buffer (buffer); |
dfdb645c | 1576 | if (NILP (buf)) |
13febd85 | 1577 | error ("No such buffer"); |
228d4b1c | 1578 | |
1076254d | 1579 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1580 | tem = Qsymbolp; |
1581 | else | |
1582 | tem = printflag; | |
13febd85 RS |
1583 | |
1584 | if (NILP (filename)) | |
1585 | filename = XBUFFER (buf)->filename; | |
1586 | ||
3f39f996 | 1587 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1588 | specbind (Qstandard_output, tem); |
1589 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
1590 | BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); | |
4c03c46d KS |
1591 | readevalloop (buf, 0, filename, Feval, |
1592 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); | |
cb09ab7a | 1593 | unbind_to (count, Qnil); |
228d4b1c JA |
1594 | |
1595 | return Qnil; | |
1596 | } | |
1597 | ||
976350af | 1598 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1599 | doc: /* Execute the region as Lisp code. |
1600 | When called from programs, expects two arguments, | |
1601 | giving starting and ending indices in the current buffer | |
1602 | of the text to be executed. | |
1603 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1604 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1605 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1606 | instead of `read' to read each expression. It gets one argument | |
1607 | which is the input stream for reading characters. | |
1608 | ||
1609 | This function does not move point. */) | |
1610 | (start, end, printflag, read_function) | |
976350af | 1611 | Lisp_Object start, end, printflag, read_function; |
078e7b4a | 1612 | { |
aed13378 | 1613 | int count = SPECPDL_INDEX (); |
ae321d28 RS |
1614 | Lisp_Object tem, cbuf; |
1615 | ||
1616 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1617 | |
265a9e55 | 1618 | if (NILP (printflag)) |
078e7b4a JB |
1619 | tem = Qsymbolp; |
1620 | else | |
1621 | tem = printflag; | |
1622 | specbind (Qstandard_output, tem); | |
3f39f996 | 1623 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1624 | |
4c03c46d | 1625 | /* readevalloop calls functions which check the type of start and end. */ |
94e554db | 1626 | readevalloop (cbuf, 0, XBUFFER (cbuf)->filename, Feval, |
4c03c46d KS |
1627 | !NILP (printflag), Qnil, read_function, |
1628 | start, end); | |
078e7b4a JB |
1629 | |
1630 | return unbind_to (count, Qnil); | |
1631 | } | |
1632 | ||
078e7b4a JB |
1633 | \f |
1634 | DEFUN ("read", Fread, Sread, 0, 1, 0, | |
5de38842 PJ |
1635 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1636 | If STREAM is nil, use the value of `standard-input' (which see). | |
1637 | STREAM or the value of `standard-input' may be: | |
1638 | a buffer (read from point and advance it) | |
1639 | a marker (read from where it points and advance it) | |
1640 | a function (call it with no arguments for each character, | |
1641 | call it with a char as argument to push a char back) | |
1642 | a string (takes text from string, starting at the beginning) | |
1643 | t (read text line using minibuffer and use it, or read from | |
1644 | standard input in batch mode). */) | |
1645 | (stream) | |
5be02dff | 1646 | Lisp_Object stream; |
078e7b4a | 1647 | { |
5be02dff KH |
1648 | if (NILP (stream)) |
1649 | stream = Vstandard_input; | |
1650 | if (EQ (stream, Qt)) | |
1651 | stream = Qread_char; | |
5be02dff | 1652 | if (EQ (stream, Qread_char)) |
078e7b4a | 1653 | return Fread_minibuffer (build_string ("Lisp expression: "), Qnil); |
078e7b4a | 1654 | |
abb13b09 | 1655 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
1656 | } |
1657 | ||
1658 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, | |
5de38842 PJ |
1659 | doc: /* Read one Lisp expression which is represented as text by STRING. |
1660 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
1661 | START and END optionally delimit a substring of STRING from which to read; | |
1662 | they default to 0 and (length STRING) respectively. */) | |
1663 | (string, start, end) | |
078e7b4a JB |
1664 | Lisp_Object string, start, end; |
1665 | { | |
2530ceaf | 1666 | Lisp_Object ret; |
b7826503 | 1667 | CHECK_STRING (string); |
2530ceaf CW |
1668 | /* read_internal_start sets read_from_string_index. */ |
1669 | ret = read_internal_start (string, start, end); | |
5135ab39 | 1670 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 1671 | } |
078e7b4a | 1672 | |
abb13b09 CW |
1673 | /* Function to set up the global context we need in toplevel read |
1674 | calls. */ | |
1675 | static Lisp_Object | |
1676 | read_internal_start (stream, start, end) | |
1677 | Lisp_Object stream; | |
1678 | Lisp_Object start; /* Only used when stream is a string. */ | |
1679 | Lisp_Object end; /* Only used when stream is a string. */ | |
1680 | { | |
1681 | Lisp_Object retval; | |
078e7b4a | 1682 | |
abb13b09 CW |
1683 | readchar_backlog = -1; |
1684 | readchar_count = 0; | |
17634846 | 1685 | new_backquote_flag = 0; |
4ad679f9 | 1686 | read_objects = Qnil; |
abb13b09 CW |
1687 | if (EQ (Vread_with_symbol_positions, Qt) |
1688 | || EQ (Vread_with_symbol_positions, stream)) | |
1689 | Vread_symbol_positions_list = Qnil; | |
1690 | ||
1691 | if (STRINGP (stream)) | |
1692 | { | |
1693 | int startval, endval; | |
1694 | if (NILP (end)) | |
d5db4077 | 1695 | endval = SCHARS (stream); |
abb13b09 CW |
1696 | else |
1697 | { | |
1698 | CHECK_NUMBER (end); | |
1699 | endval = XINT (end); | |
d5db4077 | 1700 | if (endval < 0 || endval > SCHARS (stream)) |
abb13b09 CW |
1701 | args_out_of_range (stream, end); |
1702 | } | |
17634846 | 1703 | |
abb13b09 CW |
1704 | if (NILP (start)) |
1705 | startval = 0; | |
1706 | else | |
1707 | { | |
1708 | CHECK_NUMBER (start); | |
1709 | startval = XINT (start); | |
1710 | if (startval < 0 || startval > endval) | |
1711 | args_out_of_range (stream, start); | |
1712 | } | |
1713 | read_from_string_index = startval; | |
1714 | read_from_string_index_byte = string_char_to_byte (stream, startval); | |
1715 | read_from_string_limit = endval; | |
1716 | } | |
177c0ea7 | 1717 | |
abb13b09 CW |
1718 | retval = read0 (stream); |
1719 | if (EQ (Vread_with_symbol_positions, Qt) | |
1720 | || EQ (Vread_with_symbol_positions, stream)) | |
1721 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
1722 | return retval; | |
078e7b4a JB |
1723 | } |
1724 | \f | |
336d4a9c KS |
1725 | |
1726 | /* Signal Qinvalid_read_syntax error. | |
1727 | S is error string of length N (if > 0) */ | |
1728 | ||
1729 | static void | |
1730 | invalid_syntax (s, n) | |
1731 | const char *s; | |
1732 | int n; | |
1733 | { | |
1734 | if (!n) | |
1735 | n = strlen (s); | |
1736 | xsignal1 (Qinvalid_read_syntax, make_string (s, n)); | |
1737 | } | |
1738 | ||
1739 | ||
6428369f KH |
1740 | /* Use this for recursive reads, in contexts where internal tokens |
1741 | are not allowed. */ | |
e28552a4 | 1742 | |
078e7b4a JB |
1743 | static Lisp_Object |
1744 | read0 (readcharfun) | |
1745 | Lisp_Object readcharfun; | |
1746 | { | |
1747 | register Lisp_Object val; | |
e28552a4 | 1748 | int c; |
078e7b4a | 1749 | |
17634846 | 1750 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
1751 | if (!c) |
1752 | return val; | |
078e7b4a | 1753 | |
336d4a9c KS |
1754 | xsignal1 (Qinvalid_read_syntax, |
1755 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
1756 | } |
1757 | \f | |
1758 | static int read_buffer_size; | |
1759 | static char *read_buffer; | |
1760 | ||
fe0e03f3 KH |
1761 | /* Read multibyte form and return it as a character. C is a first |
1762 | byte of multibyte form, and rest of them are read from | |
1763 | READCHARFUN. */ | |
6f7f43d5 | 1764 | |
fe0e03f3 KH |
1765 | static int |
1766 | read_multibyte (c, readcharfun) | |
1767 | register int c; | |
1768 | Lisp_Object readcharfun; | |
1769 | { | |
1770 | /* We need the actual character code of this multibyte | |
1771 | characters. */ | |
449fea39 | 1772 | unsigned char str[MAX_MULTIBYTE_LENGTH]; |
fe0e03f3 | 1773 | int len = 0; |
0d5e5843 | 1774 | int bytes; |
fe0e03f3 | 1775 | |
abb13b09 CW |
1776 | if (c < 0) |
1777 | return c; | |
1778 | ||
fe0e03f3 KH |
1779 | str[len++] = c; |
1780 | while ((c = READCHAR) >= 0xA0 | |
449fea39 | 1781 | && len < MAX_MULTIBYTE_LENGTH) |
abb13b09 CW |
1782 | { |
1783 | str[len++] = c; | |
1784 | readchar_count--; | |
1785 | } | |
fe0e03f3 | 1786 | UNREAD (c); |
0d5e5843 KH |
1787 | if (UNIBYTE_STR_AS_MULTIBYTE_P (str, len, bytes)) |
1788 | return STRING_CHAR (str, len); | |
1789 | /* The byte sequence is not valid as multibyte. Unread all bytes | |
1790 | but the first one, and return the first byte. */ | |
1791 | while (--len > 0) | |
1792 | UNREAD (str[len]); | |
1793 | return str[0]; | |
fe0e03f3 KH |
1794 | } |
1795 | ||
f6f79b37 RS |
1796 | /* Read a \-escape sequence, assuming we already read the `\'. |
1797 | If the escape sequence forces unibyte, store 1 into *BYTEREP. | |
1798 | If the escape sequence forces multibyte, store 2 into *BYTEREP. | |
1799 | Otherwise store 0 into *BYTEREP. */ | |
6f7f43d5 | 1800 | |
078e7b4a | 1801 | static int |
f6f79b37 | 1802 | read_escape (readcharfun, stringp, byterep) |
078e7b4a | 1803 | Lisp_Object readcharfun; |
e7fc914b | 1804 | int stringp; |
f6f79b37 | 1805 | int *byterep; |
078e7b4a JB |
1806 | { |
1807 | register int c = READCHAR; | |
71b169b8 EZ |
1808 | /* \u allows up to four hex digits, \U up to eight. Default to the |
1809 | behaviour for \u, and change this value in the case that \U is seen. */ | |
1810 | int unicode_hex_count = 4; | |
f6f79b37 RS |
1811 | |
1812 | *byterep = 0; | |
1813 | ||
078e7b4a JB |
1814 | switch (c) |
1815 | { | |
f3849f25 | 1816 | case -1: |
da3b886d | 1817 | end_of_file_error (); |
f3849f25 | 1818 | |
078e7b4a | 1819 | case 'a': |
265a9e55 | 1820 | return '\007'; |
078e7b4a JB |
1821 | case 'b': |
1822 | return '\b'; | |
f405a585 RS |
1823 | case 'd': |
1824 | return 0177; | |
078e7b4a JB |
1825 | case 'e': |
1826 | return 033; | |
1827 | case 'f': | |
1828 | return '\f'; | |
1829 | case 'n': | |
1830 | return '\n'; | |
1831 | case 'r': | |
1832 | return '\r'; | |
1833 | case 't': | |
1834 | return '\t'; | |
1835 | case 'v': | |
1836 | return '\v'; | |
1837 | case '\n': | |
1838 | return -1; | |
e28552a4 | 1839 | case ' ': |
e7fc914b KH |
1840 | if (stringp) |
1841 | return -1; | |
1842 | return ' '; | |
078e7b4a JB |
1843 | |
1844 | case 'M': | |
1845 | c = READCHAR; | |
1846 | if (c != '-') | |
1847 | error ("Invalid escape character syntax"); | |
1848 | c = READCHAR; | |
1849 | if (c == '\\') | |
f6f79b37 | 1850 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1851 | return c | meta_modifier; |
f405a585 RS |
1852 | |
1853 | case 'S': | |
1854 | c = READCHAR; | |
1855 | if (c != '-') | |
1856 | error ("Invalid escape character syntax"); | |
1857 | c = READCHAR; | |
1858 | if (c == '\\') | |
f6f79b37 | 1859 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1860 | return c | shift_modifier; |
1861 | ||
1862 | case 'H': | |
1863 | c = READCHAR; | |
1864 | if (c != '-') | |
1865 | error ("Invalid escape character syntax"); | |
1866 | c = READCHAR; | |
1867 | if (c == '\\') | |
f6f79b37 | 1868 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1869 | return c | hyper_modifier; |
1870 | ||
1871 | case 'A': | |
1872 | c = READCHAR; | |
1873 | if (c != '-') | |
1874 | error ("Invalid escape character syntax"); | |
1875 | c = READCHAR; | |
1876 | if (c == '\\') | |
f6f79b37 | 1877 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd RS |
1878 | return c | alt_modifier; |
1879 | ||
1880 | case 's': | |
1881 | c = READCHAR; | |
010b7eac RS |
1882 | if (c != '-') |
1883 | { | |
1884 | UNREAD (c); | |
1885 | return ' '; | |
1886 | } | |
7bd279cd RS |
1887 | c = READCHAR; |
1888 | if (c == '\\') | |
f6f79b37 | 1889 | c = read_escape (readcharfun, 0, byterep); |
7bd279cd | 1890 | return c | super_modifier; |
078e7b4a JB |
1891 | |
1892 | case 'C': | |
1893 | c = READCHAR; | |
1894 | if (c != '-') | |
1895 | error ("Invalid escape character syntax"); | |
1896 | case '^': | |
1897 | c = READCHAR; | |
1898 | if (c == '\\') | |
f6f79b37 | 1899 | c = read_escape (readcharfun, 0, byterep); |
164d590d KH |
1900 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
1901 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
1902 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
1903 | return c | ctrl_modifier; | |
f405a585 RS |
1904 | /* ASCII control chars are made from letters (both cases), |
1905 | as well as the non-letters within 0100...0137. */ | |
1906 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
1907 | return (c & (037 | ~0177)); | |
1908 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
1909 | return (c & (037 | ~0177)); | |
078e7b4a | 1910 | else |
7bd279cd | 1911 | return c | ctrl_modifier; |
078e7b4a JB |
1912 | |
1913 | case '0': | |
1914 | case '1': | |
1915 | case '2': | |
1916 | case '3': | |
1917 | case '4': | |
1918 | case '5': | |
1919 | case '6': | |
1920 | case '7': | |
1921 | /* An octal escape, as in ANSI C. */ | |
1922 | { | |
1923 | register int i = c - '0'; | |
1924 | register int count = 0; | |
1925 | while (++count < 3) | |
1926 | { | |
1927 | if ((c = READCHAR) >= '0' && c <= '7') | |
1928 | { | |
1929 | i *= 8; | |
1930 | i += c - '0'; | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | UNREAD (c); | |
1935 | break; | |
1936 | } | |
1937 | } | |
177c0ea7 | 1938 | |
f6f79b37 | 1939 | *byterep = 1; |
078e7b4a JB |
1940 | return i; |
1941 | } | |
1942 | ||
1943 | case 'x': | |
1944 | /* A hex escape, as in ANSI C. */ | |
1945 | { | |
1946 | int i = 0; | |
1947 | while (1) | |
1948 | { | |
1949 | c = READCHAR; | |
1950 | if (c >= '0' && c <= '9') | |
1951 | { | |
1952 | i *= 16; | |
1953 | i += c - '0'; | |
1954 | } | |
1955 | else if ((c >= 'a' && c <= 'f') | |
1956 | || (c >= 'A' && c <= 'F')) | |
1957 | { | |
1958 | i *= 16; | |
1959 | if (c >= 'a' && c <= 'f') | |
1960 | i += c - 'a' + 10; | |
1961 | else | |
1962 | i += c - 'A' + 10; | |
1963 | } | |
1964 | else | |
1965 | { | |
1966 | UNREAD (c); | |
1967 | break; | |
1968 | } | |
1969 | } | |
f6f79b37 RS |
1970 | |
1971 | *byterep = 2; | |
078e7b4a JB |
1972 | return i; |
1973 | } | |
1974 | ||
71b169b8 EZ |
1975 | case 'U': |
1976 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
1977 | unicode_hex_count = 8; | |
1978 | case 'u': | |
1979 | ||
1980 | /* A Unicode escape. We only permit them in strings and characters, | |
1981 | not arbitrarily in the source code, as in some other languages. */ | |
1982 | { | |
1983 | int i = 0; | |
1984 | int count = 0; | |
1985 | Lisp_Object lisp_char; | |
1986 | struct gcpro gcpro1; | |
1987 | ||
1988 | while (++count <= unicode_hex_count) | |
1989 | { | |
1990 | c = READCHAR; | |
a3ac22e4 | 1991 | /* isdigit and isalpha may be locale-specific, which we don't |
71b169b8 EZ |
1992 | want. */ |
1993 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); | |
1994 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
1995 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
1996 | else | |
1997 | { | |
1998 | error ("Non-hex digit used for Unicode escape"); | |
1999 | break; | |
2000 | } | |
2001 | } | |
2002 | ||
2003 | GCPRO1 (readcharfun); | |
a3ac22e4 EZ |
2004 | lisp_char = call2 (intern ("decode-char"), intern ("ucs"), |
2005 | make_number (i)); | |
71b169b8 EZ |
2006 | UNGCPRO; |
2007 | ||
a3ac22e4 | 2008 | if (NILP (lisp_char)) |
71b169b8 | 2009 | { |
9ee96155 | 2010 | error ("Unsupported Unicode code point: U+%x", (unsigned)i); |
71b169b8 | 2011 | } |
9ee96155 EZ |
2012 | |
2013 | return XFASTINT (lisp_char); | |
71b169b8 EZ |
2014 | } |
2015 | ||
078e7b4a | 2016 | default: |
fe0e03f3 KH |
2017 | if (BASE_LEADING_CODE_P (c)) |
2018 | c = read_multibyte (c, readcharfun); | |
078e7b4a JB |
2019 | return c; |
2020 | } | |
2021 | } | |
2022 | ||
bf5d1a17 GM |
2023 | /* Read an integer in radix RADIX using READCHARFUN to read |
2024 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2025 | read error is signaled . Value is the integer read. Signals an | |
2026 | error if encountering invalid read syntax or if RADIX is out of | |
2027 | range. */ | |
2028 | ||
2029 | static Lisp_Object | |
2030 | read_integer (readcharfun, radix) | |
2031 | Lisp_Object readcharfun; | |
2032 | int radix; | |
2033 | { | |
5e37dc22 GM |
2034 | int ndigits = 0, invalid_p, c, sign = 0; |
2035 | EMACS_INT number = 0; | |
bf5d1a17 GM |
2036 | |
2037 | if (radix < 2 || radix > 36) | |
2038 | invalid_p = 1; | |
2039 | else | |
2040 | { | |
2041 | number = ndigits = invalid_p = 0; | |
2042 | sign = 1; | |
2043 | ||
2044 | c = READCHAR; | |
2045 | if (c == '-') | |
2046 | { | |
2047 | c = READCHAR; | |
2048 | sign = -1; | |
2049 | } | |
2050 | else if (c == '+') | |
2051 | c = READCHAR; | |
177c0ea7 | 2052 | |
bf5d1a17 GM |
2053 | while (c >= 0) |
2054 | { | |
2055 | int digit; | |
177c0ea7 | 2056 | |
bf5d1a17 GM |
2057 | if (c >= '0' && c <= '9') |
2058 | digit = c - '0'; | |
2059 | else if (c >= 'a' && c <= 'z') | |
2060 | digit = c - 'a' + 10; | |
2061 | else if (c >= 'A' && c <= 'Z') | |
2062 | digit = c - 'A' + 10; | |
2063 | else | |
b632fa48 GM |
2064 | { |
2065 | UNREAD (c); | |
2066 | break; | |
2067 | } | |
bf5d1a17 GM |
2068 | |
2069 | if (digit < 0 || digit >= radix) | |
2070 | invalid_p = 1; | |
2071 | ||
2072 | number = radix * number + digit; | |
2073 | ++ndigits; | |
2074 | c = READCHAR; | |
2075 | } | |
2076 | } | |
2077 | ||
2078 | if (ndigits == 0 || invalid_p) | |
2079 | { | |
2080 | char buf[50]; | |
2081 | sprintf (buf, "integer, radix %d", radix); | |
336d4a9c | 2082 | invalid_syntax (buf, 0); |
bf5d1a17 GM |
2083 | } |
2084 | ||
2085 | return make_number (sign * number); | |
2086 | } | |
2087 | ||
2088 | ||
a742d646 GM |
2089 | /* Convert unibyte text in read_buffer to multibyte. |
2090 | ||
2091 | Initially, *P is a pointer after the end of the unibyte text, and | |
2092 | the pointer *END points after the end of read_buffer. | |
2093 | ||
2094 | If read_buffer doesn't have enough room to hold the result | |
2095 | of the conversion, reallocate it and adjust *P and *END. | |
2096 | ||
2097 | At the end, make *P point after the result of the conversion, and | |
2098 | return in *NCHARS the number of characters in the converted | |
2099 | text. */ | |
2100 | ||
2101 | static void | |
2102 | to_multibyte (p, end, nchars) | |
2103 | char **p, **end; | |
2104 | int *nchars; | |
2105 | { | |
2106 | int nbytes; | |
2107 | ||
2108 | parse_str_as_multibyte (read_buffer, *p - read_buffer, &nbytes, nchars); | |
b4a3be43 | 2109 | if (read_buffer_size < 2 * nbytes) |
a742d646 GM |
2110 | { |
2111 | int offset = *p - read_buffer; | |
fe957e65 | 2112 | read_buffer_size = 2 * max (read_buffer_size, nbytes); |
a742d646 GM |
2113 | read_buffer = (char *) xrealloc (read_buffer, read_buffer_size); |
2114 | *p = read_buffer + offset; | |
2115 | *end = read_buffer + read_buffer_size; | |
2116 | } | |
2117 | ||
2118 | if (nbytes != *nchars) | |
2119 | nbytes = str_as_multibyte (read_buffer, read_buffer_size, | |
2120 | *p - read_buffer, nchars); | |
177c0ea7 | 2121 | |
a742d646 GM |
2122 | *p = read_buffer + nbytes; |
2123 | } | |
2124 | ||
2125 | ||
6428369f KH |
2126 | /* If the next token is ')' or ']' or '.', we store that character |
2127 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2128 | zero in *PCH and we read and return one lisp object. |
2129 | ||
2130 | FIRST_IN_LIST is nonzero if this is the first element of a list. */ | |
2131 | ||
078e7b4a | 2132 | static Lisp_Object |
17634846 | 2133 | read1 (readcharfun, pch, first_in_list) |
078e7b4a | 2134 | register Lisp_Object readcharfun; |
e28552a4 | 2135 | int *pch; |
17634846 | 2136 | int first_in_list; |
078e7b4a JB |
2137 | { |
2138 | register int c; | |
4ad679f9 EN |
2139 | int uninterned_symbol = 0; |
2140 | ||
6428369f | 2141 | *pch = 0; |
078e7b4a JB |
2142 | |
2143 | retry: | |
2144 | ||
2145 | c = READCHAR; | |
9c97398c GM |
2146 | if (c < 0) |
2147 | end_of_file_error (); | |
078e7b4a JB |
2148 | |
2149 | switch (c) | |
2150 | { | |
2151 | case '(': | |
2152 | return read_list (0, readcharfun); | |
2153 | ||
2154 | case '[': | |
c15cfd1f | 2155 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2156 | |
2157 | case ')': | |
2158 | case ']': | |
078e7b4a | 2159 | { |
6428369f KH |
2160 | *pch = c; |
2161 | return Qnil; | |
078e7b4a JB |
2162 | } |
2163 | ||
2164 | case '#': | |
200f684e | 2165 | c = READCHAR; |
c2390933 RS |
2166 | if (c == '^') |
2167 | { | |
2168 | c = READCHAR; | |
2169 | if (c == '[') | |
2170 | { | |
2171 | Lisp_Object tmp; | |
c15cfd1f | 2172 | tmp = read_vector (readcharfun, 0); |
c2390933 RS |
2173 | if (XVECTOR (tmp)->size < CHAR_TABLE_STANDARD_SLOTS |
2174 | || XVECTOR (tmp)->size > CHAR_TABLE_STANDARD_SLOTS + 10) | |
2175 | error ("Invalid size char-table"); | |
2176 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
3701b5de | 2177 | XCHAR_TABLE (tmp)->top = Qt; |
c2390933 RS |
2178 | return tmp; |
2179 | } | |
3701b5de KH |
2180 | else if (c == '^') |
2181 | { | |
2182 | c = READCHAR; | |
2183 | if (c == '[') | |
2184 | { | |
2185 | Lisp_Object tmp; | |
c15cfd1f | 2186 | tmp = read_vector (readcharfun, 0); |
3701b5de KH |
2187 | if (XVECTOR (tmp)->size != SUB_CHAR_TABLE_STANDARD_SLOTS) |
2188 | error ("Invalid size char-table"); | |
2189 | XSETCHAR_TABLE (tmp, XCHAR_TABLE (tmp)); | |
2190 | XCHAR_TABLE (tmp)->top = Qnil; | |
2191 | return tmp; | |
2192 | } | |
336d4a9c | 2193 | invalid_syntax ("#^^", 3); |
3701b5de | 2194 | } |
336d4a9c | 2195 | invalid_syntax ("#^", 2); |
c2390933 RS |
2196 | } |
2197 | if (c == '&') | |
2198 | { | |
2199 | Lisp_Object length; | |
2200 | length = read1 (readcharfun, pch, first_in_list); | |
2201 | c = READCHAR; | |
2202 | if (c == '"') | |
2203 | { | |
2204 | Lisp_Object tmp, val; | |
d1ca81d9 AS |
2205 | int size_in_chars |
2206 | = ((XFASTINT (length) + BOOL_VECTOR_BITS_PER_CHAR - 1) | |
2207 | / BOOL_VECTOR_BITS_PER_CHAR); | |
c2390933 RS |
2208 | |
2209 | UNREAD (c); | |
2210 | tmp = read1 (readcharfun, pch, first_in_list); | |
d5db4077 | 2211 | if (size_in_chars != SCHARS (tmp) |
90ed3ec5 RS |
2212 | /* We used to print 1 char too many |
2213 | when the number of bits was a multiple of 8. | |
2214 | Accept such input in case it came from an old version. */ | |
2215 | && ! (XFASTINT (length) | |
d1ca81d9 | 2216 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR)) |
336d4a9c | 2217 | invalid_syntax ("#&...", 5); |
177c0ea7 | 2218 | |
c2390933 | 2219 | val = Fmake_bool_vector (length, Qnil); |
d5db4077 | 2220 | bcopy (SDATA (tmp), XBOOL_VECTOR (val)->data, |
c2390933 | 2221 | size_in_chars); |
67d3b149 | 2222 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2223 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
67d3b149 | 2224 | XBOOL_VECTOR (val)->data[size_in_chars - 1] |
d1ca81d9 | 2225 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2226 | return val; |
2227 | } | |
336d4a9c | 2228 | invalid_syntax ("#&...", 5); |
c2390933 | 2229 | } |
200f684e RS |
2230 | if (c == '[') |
2231 | { | |
2232 | /* Accept compiled functions at read-time so that we don't have to | |
2233 | build them using function calls. */ | |
748ef62f | 2234 | Lisp_Object tmp; |
c15cfd1f | 2235 | tmp = read_vector (readcharfun, 1); |
748ef62f RS |
2236 | return Fmake_byte_code (XVECTOR (tmp)->size, |
2237 | XVECTOR (tmp)->contents); | |
200f684e | 2238 | } |
748ef62f RS |
2239 | if (c == '(') |
2240 | { | |
2241 | Lisp_Object tmp; | |
2242 | struct gcpro gcpro1; | |
e28552a4 | 2243 | int ch; |
748ef62f RS |
2244 | |
2245 | /* Read the string itself. */ | |
17634846 | 2246 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2247 | if (ch != 0 || !STRINGP (tmp)) |
336d4a9c | 2248 | invalid_syntax ("#", 1); |
748ef62f RS |
2249 | GCPRO1 (tmp); |
2250 | /* Read the intervals and their properties. */ | |
2251 | while (1) | |
2252 | { | |
2253 | Lisp_Object beg, end, plist; | |
2254 | ||
17634846 | 2255 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2256 | end = plist = Qnil; |
6428369f KH |
2257 | if (ch == ')') |
2258 | break; | |
2259 | if (ch == 0) | |
17634846 | 2260 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2261 | if (ch == 0) |
17634846 | 2262 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2263 | if (ch) |
336d4a9c | 2264 | invalid_syntax ("Invalid string property list", 0); |
748ef62f RS |
2265 | Fset_text_properties (beg, end, plist, tmp); |
2266 | } | |
2267 | UNGCPRO; | |
2268 | return tmp; | |
2269 | } | |
177c0ea7 | 2270 | |
20ea2964 RS |
2271 | /* #@NUMBER is used to skip NUMBER following characters. |
2272 | That's used in .elc files to skip over doc strings | |
2273 | and function definitions. */ | |
2274 | if (c == '@') | |
2275 | { | |
2276 | int i, nskip = 0; | |
2277 | ||
2278 | /* Read a decimal integer. */ | |
2279 | while ((c = READCHAR) >= 0 | |
2280 | && c >= '0' && c <= '9') | |
2281 | { | |
2282 | nskip *= 10; | |
2283 | nskip += c - '0'; | |
2284 | } | |
2285 | if (c >= 0) | |
2286 | UNREAD (c); | |
177c0ea7 | 2287 | |
b2a30870 RS |
2288 | if (load_force_doc_strings && EQ (readcharfun, Qget_file_char)) |
2289 | { | |
2290 | /* If we are supposed to force doc strings into core right now, | |
2291 | record the last string that we skipped, | |
2292 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2293 | |
2294 | /* But first exchange saved_doc_string | |
2295 | with prev_saved_doc_string, so we save two strings. */ | |
2296 | { | |
2297 | char *temp = saved_doc_string; | |
2298 | int temp_size = saved_doc_string_size; | |
68c45bf0 | 2299 | file_offset temp_pos = saved_doc_string_position; |
c15cfd1f RS |
2300 | int temp_len = saved_doc_string_length; |
2301 | ||
2302 | saved_doc_string = prev_saved_doc_string; | |
2303 | saved_doc_string_size = prev_saved_doc_string_size; | |
2304 | saved_doc_string_position = prev_saved_doc_string_position; | |
2305 | saved_doc_string_length = prev_saved_doc_string_length; | |
2306 | ||
2307 | prev_saved_doc_string = temp; | |
2308 | prev_saved_doc_string_size = temp_size; | |
2309 | prev_saved_doc_string_position = temp_pos; | |
2310 | prev_saved_doc_string_length = temp_len; | |
2311 | } | |
2312 | ||
b2a30870 RS |
2313 | if (saved_doc_string_size == 0) |
2314 | { | |
2315 | saved_doc_string_size = nskip + 100; | |
11938f10 | 2316 | saved_doc_string = (char *) xmalloc (saved_doc_string_size); |
b2a30870 RS |
2317 | } |
2318 | if (nskip > saved_doc_string_size) | |
2319 | { | |
2320 | saved_doc_string_size = nskip + 100; | |
11938f10 KH |
2321 | saved_doc_string = (char *) xrealloc (saved_doc_string, |
2322 | saved_doc_string_size); | |
b2a30870 RS |
2323 | } |
2324 | ||
68c45bf0 | 2325 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2326 | |
2327 | /* Copy that many characters into saved_doc_string. */ | |
2328 | for (i = 0; i < nskip && c >= 0; i++) | |
2329 | saved_doc_string[i] = c = READCHAR; | |
2330 | ||
2331 | saved_doc_string_length = i; | |
2332 | } | |
2333 | else | |
b2a30870 RS |
2334 | { |
2335 | /* Skip that many characters. */ | |
2336 | for (i = 0; i < nskip && c >= 0; i++) | |
2337 | c = READCHAR; | |
2338 | } | |
d49f0c1a | 2339 | |
20ea2964 RS |
2340 | goto retry; |
2341 | } | |
e2518d02 RS |
2342 | if (c == '!') |
2343 | { | |
2344 | /* #! appears at the beginning of an executable file. | |
2345 | Skip the first line. */ | |
225c7a07 | 2346 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2347 | c = READCHAR; |
2348 | goto retry; | |
2349 | } | |
20ea2964 RS |
2350 | if (c == '$') |
2351 | return Vload_file_name; | |
2b6cae0c RS |
2352 | if (c == '\'') |
2353 | return Fcons (Qfunction, Fcons (read0 (readcharfun), Qnil)); | |
4ad679f9 EN |
2354 | /* #:foo is the uninterned symbol named foo. */ |
2355 | if (c == ':') | |
2356 | { | |
2357 | uninterned_symbol = 1; | |
2358 | c = READCHAR; | |
2359 | goto default_label; | |
2360 | } | |
2361 | /* Reader forms that can reuse previously read objects. */ | |
2362 | if (c >= '0' && c <= '9') | |
2363 | { | |
2364 | int n = 0; | |
2365 | Lisp_Object tem; | |
2b6cae0c | 2366 | |
4ad679f9 EN |
2367 | /* Read a non-negative integer. */ |
2368 | while (c >= '0' && c <= '9') | |
2369 | { | |
2370 | n *= 10; | |
2371 | n += c - '0'; | |
2372 | c = READCHAR; | |
2373 | } | |
2374 | /* #n=object returns object, but associates it with n for #n#. */ | |
2375 | if (c == '=') | |
2376 | { | |
9e062b6c RS |
2377 | /* Make a placeholder for #n# to use temporarily */ |
2378 | Lisp_Object placeholder; | |
2379 | Lisp_Object cell; | |
2380 | ||
2381 | placeholder = Fcons(Qnil, Qnil); | |
2382 | cell = Fcons (make_number (n), placeholder); | |
2383 | read_objects = Fcons (cell, read_objects); | |
2384 | ||
2385 | /* Read the object itself. */ | |
4ad679f9 | 2386 | tem = read0 (readcharfun); |
9e062b6c RS |
2387 | |
2388 | /* Now put it everywhere the placeholder was... */ | |
2389 | substitute_object_in_subtree (tem, placeholder); | |
2390 | ||
2391 | /* ...and #n# will use the real value from now on. */ | |
2392 | Fsetcdr (cell, tem); | |
177c0ea7 | 2393 | |
4ad679f9 EN |
2394 | return tem; |
2395 | } | |
2396 | /* #n# returns a previously read object. */ | |
2397 | if (c == '#') | |
2398 | { | |
2399 | tem = Fassq (make_number (n), read_objects); | |
2400 | if (CONSP (tem)) | |
2401 | return XCDR (tem); | |
2402 | /* Fall through to error message. */ | |
2403 | } | |
bf5d1a17 GM |
2404 | else if (c == 'r' || c == 'R') |
2405 | return read_integer (readcharfun, n); | |
177c0ea7 | 2406 | |
4ad679f9 EN |
2407 | /* Fall through to error message. */ |
2408 | } | |
bf5d1a17 GM |
2409 | else if (c == 'x' || c == 'X') |
2410 | return read_integer (readcharfun, 16); | |
2411 | else if (c == 'o' || c == 'O') | |
2412 | return read_integer (readcharfun, 8); | |
2413 | else if (c == 'b' || c == 'B') | |
2414 | return read_integer (readcharfun, 2); | |
20ea2964 | 2415 | |
200f684e | 2416 | UNREAD (c); |
336d4a9c | 2417 | invalid_syntax ("#", 1); |
078e7b4a JB |
2418 | |
2419 | case ';': | |
2420 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2421 | goto retry; | |
2422 | ||
2423 | case '\'': | |
2424 | { | |
2425 | return Fcons (Qquote, Fcons (read0 (readcharfun), Qnil)); | |
2426 | } | |
2427 | ||
17634846 RS |
2428 | case '`': |
2429 | if (first_in_list) | |
2430 | goto default_label; | |
2431 | else | |
2432 | { | |
2433 | Lisp_Object value; | |
2434 | ||
0ffbbdeb | 2435 | new_backquote_flag++; |
17634846 | 2436 | value = read0 (readcharfun); |
0ffbbdeb | 2437 | new_backquote_flag--; |
17634846 RS |
2438 | |
2439 | return Fcons (Qbackquote, Fcons (value, Qnil)); | |
2440 | } | |
2441 | ||
2442 | case ',': | |
2443 | if (new_backquote_flag) | |
2444 | { | |
2445 | Lisp_Object comma_type = Qnil; | |
2446 | Lisp_Object value; | |
2447 | int ch = READCHAR; | |
2448 | ||
2449 | if (ch == '@') | |
2450 | comma_type = Qcomma_at; | |
2451 | else if (ch == '.') | |
2452 | comma_type = Qcomma_dot; | |
2453 | else | |
2454 | { | |
2455 | if (ch >= 0) UNREAD (ch); | |
2456 | comma_type = Qcomma; | |
2457 | } | |
2458 | ||
0ffbbdeb | 2459 | new_backquote_flag--; |
17634846 | 2460 | value = read0 (readcharfun); |
0ffbbdeb | 2461 | new_backquote_flag++; |
17634846 RS |
2462 | return Fcons (comma_type, Fcons (value, Qnil)); |
2463 | } | |
2464 | else | |
2465 | goto default_label; | |
2466 | ||
078e7b4a JB |
2467 | case '?': |
2468 | { | |
f6f79b37 | 2469 | int discard; |
df9c2be7 KS |
2470 | int next_char; |
2471 | int ok; | |
f6f79b37 | 2472 | |
078e7b4a | 2473 | c = READCHAR; |
9c97398c GM |
2474 | if (c < 0) |
2475 | end_of_file_error (); | |
078e7b4a | 2476 | |
b9284371 KS |
2477 | /* Accept `single space' syntax like (list ? x) where the |
2478 | whitespace character is SPC or TAB. | |
2479 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2480 | as there are well-established escape sequences for these. */ | |
2481 | if (c == ' ' || c == '\t') | |
2482 | return make_number (c); | |
2483 | ||
078e7b4a | 2484 | if (c == '\\') |
f6f79b37 | 2485 | c = read_escape (readcharfun, 0, &discard); |
fe0e03f3 KH |
2486 | else if (BASE_LEADING_CODE_P (c)) |
2487 | c = read_multibyte (c, readcharfun); | |
078e7b4a | 2488 | |
df9c2be7 KS |
2489 | next_char = READCHAR; |
2490 | if (next_char == '.') | |
2491 | { | |
2492 | /* Only a dotted-pair dot is valid after a char constant. */ | |
2493 | int next_next_char = READCHAR; | |
2494 | UNREAD (next_next_char); | |
2495 | ||
2496 | ok = (next_next_char <= 040 | |
e613ea97 KH |
2497 | || (next_next_char < 0200 |
2498 | && (index ("\"';([#?", next_next_char) | |
2499 | || (!first_in_list && next_next_char == '`') | |
2500 | || (new_backquote_flag && next_next_char == ',')))); | |
df9c2be7 KS |
2501 | } |
2502 | else | |
2503 | { | |
2504 | ok = (next_char <= 040 | |
e613ea97 KH |
2505 | || (next_char < 0200 |
2506 | && (index ("\"';()[]#?", next_char) | |
2507 | || (!first_in_list && next_char == '`') | |
2508 | || (new_backquote_flag && next_char == ',')))); | |
df9c2be7 KS |
2509 | } |
2510 | UNREAD (next_char); | |
336d4a9c KS |
2511 | if (ok) |
2512 | return make_number (c); | |
37cd4238 | 2513 | |
336d4a9c | 2514 | invalid_syntax ("?", 1); |
078e7b4a JB |
2515 | } |
2516 | ||
00a9a935 | 2517 | case '"': |
078e7b4a | 2518 | { |
a742d646 GM |
2519 | char *p = read_buffer; |
2520 | char *end = read_buffer + read_buffer_size; | |
078e7b4a | 2521 | register int c; |
5150eeec RS |
2522 | /* 1 if we saw an escape sequence specifying |
2523 | a multibyte character, or a multibyte character. */ | |
e7fc914b | 2524 | int force_multibyte = 0; |
5150eeec | 2525 | /* 1 if we saw an escape sequence specifying |
e7fc914b KH |
2526 | a single-byte character. */ |
2527 | int force_singlebyte = 0; | |
5150eeec RS |
2528 | /* 1 if read_buffer contains multibyte text now. */ |
2529 | int is_multibyte = 0; | |
078e7b4a | 2530 | int cancel = 0; |
5150eeec | 2531 | int nchars = 0; |
078e7b4a JB |
2532 | |
2533 | while ((c = READCHAR) >= 0 | |
2534 | && c != '\"') | |
2535 | { | |
449fea39 | 2536 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2537 | { |
5d65df0d GM |
2538 | int offset = p - read_buffer; |
2539 | read_buffer = (char *) xrealloc (read_buffer, | |
2540 | read_buffer_size *= 2); | |
2541 | p = read_buffer + offset; | |
078e7b4a JB |
2542 | end = read_buffer + read_buffer_size; |
2543 | } | |
bed23cb2 | 2544 | |
078e7b4a | 2545 | if (c == '\\') |
03e88613 | 2546 | { |
f6f79b37 RS |
2547 | int byterep; |
2548 | ||
2549 | c = read_escape (readcharfun, 1, &byterep); | |
bed23cb2 RS |
2550 | |
2551 | /* C is -1 if \ newline has just been seen */ | |
2552 | if (c == -1) | |
03e88613 | 2553 | { |
bed23cb2 RS |
2554 | if (p == read_buffer) |
2555 | cancel = 1; | |
03e88613 RS |
2556 | continue; |
2557 | } | |
bed23cb2 | 2558 | |
f6f79b37 | 2559 | if (byterep == 1) |
e7fc914b | 2560 | force_singlebyte = 1; |
f6f79b37 RS |
2561 | else if (byterep == 2) |
2562 | force_multibyte = 1; | |
03e88613 | 2563 | } |
6f7f43d5 | 2564 | |
5150eeec RS |
2565 | /* A character that must be multibyte forces multibyte. */ |
2566 | if (! SINGLE_BYTE_CHAR_P (c & ~CHAR_MODIFIER_MASK)) | |
2567 | force_multibyte = 1; | |
2568 | ||
2569 | /* If we just discovered the need to be multibyte, | |
2570 | convert the text accumulated thus far. */ | |
2571 | if (force_multibyte && ! is_multibyte) | |
078e7b4a | 2572 | { |
5150eeec RS |
2573 | is_multibyte = 1; |
2574 | to_multibyte (&p, &end, &nchars); | |
078e7b4a | 2575 | } |
988c2f83 | 2576 | |
5150eeec RS |
2577 | /* Allow `\C- ' and `\C-?'. */ |
2578 | if (c == (CHAR_CTL | ' ')) | |
2579 | c = 0; | |
2580 | else if (c == (CHAR_CTL | '?')) | |
2581 | c = 127; | |
95af0924 | 2582 | |
5150eeec RS |
2583 | if (c & CHAR_SHIFT) |
2584 | { | |
2585 | /* Shift modifier is valid only with [A-Za-z]. */ | |
2586 | if ((c & 0377) >= 'A' && (c & 0377) <= 'Z') | |
2587 | c &= ~CHAR_SHIFT; | |
2588 | else if ((c & 0377) >= 'a' && (c & 0377) <= 'z') | |
2589 | c = (c & ~CHAR_SHIFT) - ('a' - 'A'); | |
f943104a | 2590 | } |
5150eeec RS |
2591 | |
2592 | if (c & CHAR_META) | |
2593 | /* Move the meta bit to the right place for a string. */ | |
2594 | c = (c & ~CHAR_META) | 0x80; | |
2595 | if (c & CHAR_MODIFIER_MASK) | |
2596 | error ("Invalid modifier in string"); | |
2597 | ||
2598 | if (is_multibyte) | |
2599 | p += CHAR_STRING (c, p); | |
2600 | else | |
2601 | *p++ = c; | |
2602 | ||
2603 | nchars++; | |
078e7b4a | 2604 | } |
5150eeec | 2605 | |
6f7f43d5 | 2606 | if (c < 0) |
9c97398c | 2607 | end_of_file_error (); |
078e7b4a JB |
2608 | |
2609 | /* If purifying, and string starts with \ newline, | |
2610 | return zero instead. This is for doc strings | |
08564963 | 2611 | that we are really going to find in etc/DOC.nn.nn */ |
265a9e55 | 2612 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
2613 | return make_number (0); |
2614 | ||
5150eeec RS |
2615 | if (is_multibyte || force_singlebyte) |
2616 | ; | |
94e554db RS |
2617 | else if (load_convert_to_unibyte) |
2618 | { | |
2619 | Lisp_Object string; | |
a742d646 | 2620 | to_multibyte (&p, &end, &nchars); |
94e554db RS |
2621 | if (p - read_buffer != nchars) |
2622 | { | |
2623 | string = make_multibyte_string (read_buffer, nchars, | |
2624 | p - read_buffer); | |
2625 | return Fstring_make_unibyte (string); | |
2626 | } | |
5150eeec RS |
2627 | /* We can make a unibyte string directly. */ |
2628 | is_multibyte = 0; | |
94e554db | 2629 | } |
8db9dc66 RS |
2630 | else if (EQ (readcharfun, Qget_file_char) |
2631 | || EQ (readcharfun, Qlambda)) | |
a742d646 GM |
2632 | { |
2633 | /* Nowadays, reading directly from a file is used only for | |
2634 | compiled Emacs Lisp files, and those always use the | |
2635 | Emacs internal encoding. Meanwhile, Qlambda is used | |
2636 | for reading dynamic byte code (compiled with | |
81a268b4 RS |
2637 | byte-compile-dynamic = t). So make the string multibyte |
2638 | if the string contains any multibyte sequences. | |
2639 | (to_multibyte is a no-op if not.) */ | |
a742d646 | 2640 | to_multibyte (&p, &end, &nchars); |
81a268b4 | 2641 | is_multibyte = (p - read_buffer) != nchars; |
a742d646 | 2642 | } |
e28552a4 | 2643 | else |
bed23cb2 RS |
2644 | /* In all other cases, if we read these bytes as |
2645 | separate characters, treat them as separate characters now. */ | |
5150eeec | 2646 | ; |
e7fc914b | 2647 | |
abb13b09 CW |
2648 | /* We want readchar_count to be the number of characters, not |
2649 | bytes. Hence we adjust for multibyte characters in the | |
2650 | string. ... But it doesn't seem to be necessary, because | |
2651 | READCHAR *does* read multibyte characters from buffers. */ | |
2652 | /* readchar_count -= (p - read_buffer) - nchars; */ | |
e7fc914b | 2653 | if (read_pure) |
491f16a2 | 2654 | return make_pure_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2655 | is_multibyte); |
491f16a2 | 2656 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
5150eeec | 2657 | is_multibyte); |
078e7b4a JB |
2658 | } |
2659 | ||
109d300c JB |
2660 | case '.': |
2661 | { | |
109d300c JB |
2662 | int next_char = READCHAR; |
2663 | UNREAD (next_char); | |
2664 | ||
035eec48 | 2665 | if (next_char <= 040 |
e613ea97 | 2666 | || (next_char < 0200 |
95af0924 KS |
2667 | && (index ("\"';([#?", next_char) |
2668 | || (!first_in_list && next_char == '`') | |
2669 | || (new_backquote_flag && next_char == ',')))) | |
109d300c | 2670 | { |
6428369f KH |
2671 | *pch = c; |
2672 | return Qnil; | |
109d300c JB |
2673 | } |
2674 | ||
2675 | /* Otherwise, we fall through! Note that the atom-reading loop | |
2676 | below will now loop at least once, assuring that we will not | |
2677 | try to UNREAD two characters in a row. */ | |
2678 | } | |
078e7b4a | 2679 | default: |
17634846 | 2680 | default_label: |
078e7b4a JB |
2681 | if (c <= 040) goto retry; |
2682 | { | |
38404229 | 2683 | char *p = read_buffer; |
481c6336 | 2684 | int quoted = 0; |
078e7b4a JB |
2685 | |
2686 | { | |
38404229 | 2687 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 2688 | |
6f7f43d5 | 2689 | while (c > 040 |
e613ea97 KH |
2690 | && (c >= 0200 |
2691 | || (!index ("\"';()[]#", c) | |
2692 | && !(!first_in_list && c == '`') | |
2693 | && !(new_backquote_flag && c == ',')))) | |
078e7b4a | 2694 | { |
449fea39 | 2695 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2696 | { |
5d65df0d GM |
2697 | int offset = p - read_buffer; |
2698 | read_buffer = (char *) xrealloc (read_buffer, | |
2699 | read_buffer_size *= 2); | |
2700 | p = read_buffer + offset; | |
078e7b4a JB |
2701 | end = read_buffer + read_buffer_size; |
2702 | } | |
177c0ea7 | 2703 | |
078e7b4a | 2704 | if (c == '\\') |
481c6336 RS |
2705 | { |
2706 | c = READCHAR; | |
4ab11c09 GM |
2707 | if (c == -1) |
2708 | end_of_file_error (); | |
481c6336 RS |
2709 | quoted = 1; |
2710 | } | |
6f7f43d5 | 2711 | |
bed23cb2 | 2712 | if (! SINGLE_BYTE_CHAR_P (c)) |
449fea39 | 2713 | p += CHAR_STRING (c, p); |
bed23cb2 RS |
2714 | else |
2715 | *p++ = c; | |
6f7f43d5 | 2716 | |
078e7b4a JB |
2717 | c = READCHAR; |
2718 | } | |
2719 | ||
2720 | if (p == end) | |
2721 | { | |
5d65df0d GM |
2722 | int offset = p - read_buffer; |
2723 | read_buffer = (char *) xrealloc (read_buffer, | |
2724 | read_buffer_size *= 2); | |
2725 | p = read_buffer + offset; | |
2726 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
2727 | } |
2728 | *p = 0; | |
2729 | if (c >= 0) | |
2730 | UNREAD (c); | |
2731 | } | |
2732 | ||
4ad679f9 | 2733 | if (!quoted && !uninterned_symbol) |
481c6336 RS |
2734 | { |
2735 | register char *p1; | |
2736 | register Lisp_Object val; | |
2737 | p1 = read_buffer; | |
2738 | if (*p1 == '+' || *p1 == '-') p1++; | |
2739 | /* Is it an integer? */ | |
2740 | if (p1 != p) | |
2741 | { | |
2742 | while (p1 != p && (c = *p1) >= '0' && c <= '9') p1++; | |
481c6336 RS |
2743 | /* Integers can have trailing decimal points. */ |
2744 | if (p1 > read_buffer && p1 < p && *p1 == '.') p1++; | |
481c6336 RS |
2745 | if (p1 == p) |
2746 | /* It is an integer. */ | |
2747 | { | |
481c6336 RS |
2748 | if (p1[-1] == '.') |
2749 | p1[-1] = '\0'; | |
faca07fb RS |
2750 | if (sizeof (int) == sizeof (EMACS_INT)) |
2751 | XSETINT (val, atoi (read_buffer)); | |
2752 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
2753 | XSETINT (val, atol (read_buffer)); | |
2754 | else | |
2755 | abort (); | |
481c6336 RS |
2756 | return val; |
2757 | } | |
2758 | } | |
481c6336 | 2759 | if (isfloat_string (read_buffer)) |
eb659c41 | 2760 | { |
a8972052 PE |
2761 | /* Compute NaN and infinities using 0.0 in a variable, |
2762 | to cope with compilers that think they are smarter | |
5e24a1f7 | 2763 | than we are. */ |
3c329963 | 2764 | double zero = 0.0; |
a8972052 PE |
2765 | |
2766 | double value; | |
2767 | ||
2768 | /* Negate the value ourselves. This treats 0, NaNs, | |
2769 | and infinity properly on IEEE floating point hosts, | |
2770 | and works around a common bug where atof ("-0.0") | |
2771 | drops the sign. */ | |
2772 | int negative = read_buffer[0] == '-'; | |
2773 | ||
2774 | /* The only way p[-1] can be 'F' or 'N', after isfloat_string | |
eb659c41 | 2775 | returns 1, is if the input ends in e+INF or e+NaN. */ |
a8972052 | 2776 | switch (p[-1]) |
eb659c41 | 2777 | { |
a8972052 PE |
2778 | case 'F': |
2779 | value = 1.0 / zero; | |
2780 | break; | |
2781 | case 'N': | |
2782 | value = zero / zero; | |
7690cbb0 RS |
2783 | |
2784 | /* If that made a "negative" NaN, negate it. */ | |
2785 | ||
2786 | { | |
2787 | int i; | |
2788 | union { double d; char c[sizeof (double)]; } u_data, u_minus_zero; | |
2789 | ||
2790 | u_data.d = value; | |
2791 | u_minus_zero.d = - 0.0; | |
2792 | for (i = 0; i < sizeof (double); i++) | |
2793 | if (u_data.c[i] & u_minus_zero.c[i]) | |
2794 | { | |
2795 | value = - value; | |
2796 | break; | |
2797 | } | |
2798 | } | |
2799 | /* Now VALUE is a positive NaN. */ | |
a8972052 PE |
2800 | break; |
2801 | default: | |
2802 | value = atof (read_buffer + negative); | |
2803 | break; | |
eb659c41 | 2804 | } |
a8972052 PE |
2805 | |
2806 | return make_float (negative ? - value : value); | |
eb659c41 | 2807 | } |
481c6336 | 2808 | } |
abb13b09 CW |
2809 | { |
2810 | Lisp_Object result = uninterned_symbol ? make_symbol (read_buffer) | |
2811 | : intern (read_buffer); | |
2812 | if (EQ (Vread_with_symbol_positions, Qt) | |
2813 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
177c0ea7 | 2814 | Vread_symbol_positions_list = |
abb13b09 CW |
2815 | /* Kind of a hack; this will probably fail if characters |
2816 | in the symbol name were escaped. Not really a big | |
2817 | deal, though. */ | |
f74db720 SM |
2818 | Fcons (Fcons (result, |
2819 | make_number (readchar_count | |
2820 | - XFASTINT (Flength (Fsymbol_name (result))))), | |
abb13b09 CW |
2821 | Vread_symbol_positions_list); |
2822 | return result; | |
2823 | } | |
078e7b4a JB |
2824 | } |
2825 | } | |
2826 | } | |
2827 | \f | |
9e062b6c RS |
2828 | |
2829 | /* List of nodes we've seen during substitute_object_in_subtree. */ | |
2830 | static Lisp_Object seen_list; | |
2831 | ||
2832 | static void | |
2833 | substitute_object_in_subtree (object, placeholder) | |
2834 | Lisp_Object object; | |
2835 | Lisp_Object placeholder; | |
2836 | { | |
2837 | Lisp_Object check_object; | |
2838 | ||
2839 | /* We haven't seen any objects when we start. */ | |
2840 | seen_list = Qnil; | |
2841 | ||
2842 | /* Make all the substitutions. */ | |
2843 | check_object | |
2844 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 2845 | |
9e062b6c RS |
2846 | /* Clear seen_list because we're done with it. */ |
2847 | seen_list = Qnil; | |
2848 | ||
2849 | /* The returned object here is expected to always eq the | |
2850 | original. */ | |
2851 | if (!EQ (check_object, object)) | |
2852 | error ("Unexpected mutation error in reader"); | |
2853 | } | |
2854 | ||
2855 | /* Feval doesn't get called from here, so no gc protection is needed. */ | |
2856 | #define SUBSTITUTE(get_val, set_val) \ | |
2857 | { \ | |
2858 | Lisp_Object old_value = get_val; \ | |
2859 | Lisp_Object true_value \ | |
2860 | = substitute_object_recurse (object, placeholder,\ | |
2861 | old_value); \ | |
2862 | \ | |
2863 | if (!EQ (old_value, true_value)) \ | |
2864 | { \ | |
2865 | set_val; \ | |
2866 | } \ | |
2867 | } | |
2868 | ||
2869 | static Lisp_Object | |
2870 | substitute_object_recurse (object, placeholder, subtree) | |
2871 | Lisp_Object object; | |
2872 | Lisp_Object placeholder; | |
2873 | Lisp_Object subtree; | |
2874 | { | |
2875 | /* If we find the placeholder, return the target object. */ | |
2876 | if (EQ (placeholder, subtree)) | |
2877 | return object; | |
2878 | ||
2879 | /* If we've been to this node before, don't explore it again. */ | |
2880 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) | |
2881 | return subtree; | |
2882 | ||
2883 | /* If this node can be the entry point to a cycle, remember that | |
2884 | we've seen it. It can only be such an entry point if it was made | |
2885 | by #n=, which means that we can find it as a value in | |
2886 | read_objects. */ | |
2887 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
2888 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 2889 | |
9e062b6c RS |
2890 | /* Recurse according to subtree's type. |
2891 | Every branch must return a Lisp_Object. */ | |
2892 | switch (XTYPE (subtree)) | |
2893 | { | |
2894 | case Lisp_Vectorlike: | |
2895 | { | |
2896 | int i; | |
7c752c80 | 2897 | int length = XINT (Flength(subtree)); |
9e062b6c RS |
2898 | for (i = 0; i < length; i++) |
2899 | { | |
2900 | Lisp_Object idx = make_number (i); | |
2901 | SUBSTITUTE (Faref (subtree, idx), | |
177c0ea7 | 2902 | Faset (subtree, idx, true_value)); |
9e062b6c RS |
2903 | } |
2904 | return subtree; | |
2905 | } | |
2906 | ||
2907 | case Lisp_Cons: | |
2908 | { | |
2909 | SUBSTITUTE (Fcar_safe (subtree), | |
e61b9b87 | 2910 | Fsetcar (subtree, true_value)); |
9e062b6c | 2911 | SUBSTITUTE (Fcdr_safe (subtree), |
e61b9b87 | 2912 | Fsetcdr (subtree, true_value)); |
9e062b6c RS |
2913 | return subtree; |
2914 | } | |
2915 | ||
9e062b6c RS |
2916 | case Lisp_String: |
2917 | { | |
2918 | /* Check for text properties in each interval. | |
e61b9b87 | 2919 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 2920 | |
d5db4077 | 2921 | INTERVAL root_interval = STRING_INTERVALS (subtree); |
9e062b6c | 2922 | Lisp_Object arg = Fcons (object, placeholder); |
177c0ea7 | 2923 | |
0d74b006 SM |
2924 | traverse_intervals_noorder (root_interval, |
2925 | &substitute_in_interval, arg); | |
9e062b6c RS |
2926 | |
2927 | return subtree; | |
2928 | } | |
9e062b6c RS |
2929 | |
2930 | /* Other types don't recurse any further. */ | |
2931 | default: | |
2932 | return subtree; | |
2933 | } | |
2934 | } | |
2935 | ||
2936 | /* Helper function for substitute_object_recurse. */ | |
2937 | static void | |
2938 | substitute_in_interval (interval, arg) | |
2939 | INTERVAL interval; | |
2940 | Lisp_Object arg; | |
2941 | { | |
2942 | Lisp_Object object = Fcar (arg); | |
2943 | Lisp_Object placeholder = Fcdr (arg); | |
2944 | ||
2945 | SUBSTITUTE(interval->plist, interval->plist = true_value); | |
2946 | } | |
2947 | ||
2948 | \f | |
078e7b4a JB |
2949 | #define LEAD_INT 1 |
2950 | #define DOT_CHAR 2 | |
2951 | #define TRAIL_INT 4 | |
2952 | #define E_CHAR 8 | |
2953 | #define EXP_INT 16 | |
2954 | ||
2955 | int | |
2956 | isfloat_string (cp) | |
2957 | register char *cp; | |
2958 | { | |
c1a2f60a | 2959 | register int state; |
177c0ea7 | 2960 | |
d8578e58 RS |
2961 | char *start = cp; |
2962 | ||
078e7b4a JB |
2963 | state = 0; |
2964 | if (*cp == '+' || *cp == '-') | |
2965 | cp++; | |
2966 | ||
075027b1 | 2967 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2968 | { |
2969 | state |= LEAD_INT; | |
075027b1 RS |
2970 | while (*cp >= '0' && *cp <= '9') |
2971 | cp++; | |
078e7b4a JB |
2972 | } |
2973 | if (*cp == '.') | |
2974 | { | |
2975 | state |= DOT_CHAR; | |
2976 | cp++; | |
2977 | } | |
075027b1 | 2978 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2979 | { |
2980 | state |= TRAIL_INT; | |
075027b1 | 2981 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2982 | cp++; |
2983 | } | |
a35f88bf | 2984 | if (*cp == 'e' || *cp == 'E') |
078e7b4a JB |
2985 | { |
2986 | state |= E_CHAR; | |
2987 | cp++; | |
e73997a1 RS |
2988 | if (*cp == '+' || *cp == '-') |
2989 | cp++; | |
078e7b4a | 2990 | } |
078e7b4a | 2991 | |
075027b1 | 2992 | if (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2993 | { |
2994 | state |= EXP_INT; | |
075027b1 | 2995 | while (*cp >= '0' && *cp <= '9') |
078e7b4a JB |
2996 | cp++; |
2997 | } | |
d8578e58 RS |
2998 | else if (cp == start) |
2999 | ; | |
eb659c41 RS |
3000 | else if (cp[-1] == '+' && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') |
3001 | { | |
3002 | state |= EXP_INT; | |
3003 | cp += 3; | |
3004 | } | |
3005 | else if (cp[-1] == '+' && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3006 | { | |
3007 | state |= EXP_INT; | |
3008 | cp += 3; | |
3009 | } | |
3010 | ||
37579d7c | 3011 | return (((*cp == 0) || (*cp == ' ') || (*cp == '\t') || (*cp == '\n') || (*cp == '\r') || (*cp == '\f')) |
078e7b4a | 3012 | && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT) |
151bdc83 | 3013 | || state == (DOT_CHAR|TRAIL_INT) |
078e7b4a | 3014 | || state == (LEAD_INT|E_CHAR|EXP_INT) |
151bdc83 JB |
3015 | || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT) |
3016 | || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT))); | |
078e7b4a | 3017 | } |
cc94f3b2 | 3018 | |
078e7b4a JB |
3019 | \f |
3020 | static Lisp_Object | |
c15cfd1f | 3021 | read_vector (readcharfun, bytecodeflag) |
078e7b4a | 3022 | Lisp_Object readcharfun; |
c15cfd1f | 3023 | int bytecodeflag; |
078e7b4a JB |
3024 | { |
3025 | register int i; | |
3026 | register int size; | |
3027 | register Lisp_Object *ptr; | |
c15cfd1f | 3028 | register Lisp_Object tem, item, vector; |
078e7b4a JB |
3029 | register struct Lisp_Cons *otem; |
3030 | Lisp_Object len; | |
3031 | ||
3032 | tem = read_list (1, readcharfun); | |
3033 | len = Flength (tem); | |
3034 | vector = (read_pure ? make_pure_vector (XINT (len)) : Fmake_vector (len, Qnil)); | |
3035 | ||
078e7b4a JB |
3036 | size = XVECTOR (vector)->size; |
3037 | ptr = XVECTOR (vector)->contents; | |
3038 | for (i = 0; i < size; i++) | |
3039 | { | |
c15cfd1f RS |
3040 | item = Fcar (tem); |
3041 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3042 | bytecode object, the docstring containing the bytecode and | |
3043 | constants values must be treated as unibyte and passed to | |
3044 | Fread, to get the actual bytecode string and constants vector. */ | |
3045 | if (bytecodeflag && load_force_doc_strings) | |
3046 | { | |
3047 | if (i == COMPILED_BYTECODE) | |
3048 | { | |
3049 | if (!STRINGP (item)) | |
6fa2b890 | 3050 | error ("Invalid byte code"); |
c15cfd1f RS |
3051 | |
3052 | /* Delay handling the bytecode slot until we know whether | |
3053 | it is lazily-loaded (we can tell by whether the | |
3054 | constants slot is nil). */ | |
3055 | ptr[COMPILED_CONSTANTS] = item; | |
3056 | item = Qnil; | |
3057 | } | |
3058 | else if (i == COMPILED_CONSTANTS) | |
3059 | { | |
3060 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3061 | ||
3062 | if (NILP (item)) | |
3063 | { | |
3064 | /* Coerce string to unibyte (like string-as-unibyte, | |
3065 | but without generating extra garbage and | |
3066 | guaranteeing no change in the contents). */ | |
bee91904 | 3067 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3068 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f RS |
3069 | |
3070 | item = Fread (bytestr); | |
3071 | if (!CONSP (item)) | |
6fa2b890 | 3072 | error ("Invalid byte code"); |
c15cfd1f RS |
3073 | |
3074 | otem = XCONS (item); | |
c1d497be KR |
3075 | bytestr = XCAR (item); |
3076 | item = XCDR (item); | |
c15cfd1f RS |
3077 | free_cons (otem); |
3078 | } | |
3079 | ||
3080 | /* Now handle the bytecode slot. */ | |
3081 | ptr[COMPILED_BYTECODE] = read_pure ? Fpurecopy (bytestr) : bytestr; | |
3082 | } | |
3083 | } | |
3084 | ptr[i] = read_pure ? Fpurecopy (item) : item; | |
078e7b4a JB |
3085 | otem = XCONS (tem); |
3086 | tem = Fcdr (tem); | |
3087 | free_cons (otem); | |
3088 | } | |
3089 | return vector; | |
3090 | } | |
177c0ea7 | 3091 | |
6f7f43d5 RS |
3092 | /* FLAG = 1 means check for ] to terminate rather than ) and . |
3093 | FLAG = -1 means check for starting with defun | |
078e7b4a JB |
3094 | and make structure pure. */ |
3095 | ||
3096 | static Lisp_Object | |
3097 | read_list (flag, readcharfun) | |
3098 | int flag; | |
3099 | register Lisp_Object readcharfun; | |
3100 | { | |
3101 | /* -1 means check next element for defun, | |
3102 | 0 means don't check, | |
3103 | 1 means already checked and found defun. */ | |
3104 | int defunflag = flag < 0 ? -1 : 0; | |
3105 | Lisp_Object val, tail; | |
3106 | register Lisp_Object elt, tem; | |
3107 | struct gcpro gcpro1, gcpro2; | |
821d417e | 3108 | /* 0 is the normal case. |
b2a30870 | 3109 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3110 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3111 | int doc_reference = 0; |
078e7b4a | 3112 | |
17634846 RS |
3113 | /* Initialize this to 1 if we are reading a list. */ |
3114 | int first_in_list = flag <= 0; | |
3115 | ||
078e7b4a JB |
3116 | val = Qnil; |
3117 | tail = Qnil; | |
3118 | ||
3119 | while (1) | |
3120 | { | |
e28552a4 | 3121 | int ch; |
078e7b4a | 3122 | GCPRO2 (val, tail); |
17634846 | 3123 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3124 | UNGCPRO; |
20ea2964 | 3125 | |
17634846 RS |
3126 | first_in_list = 0; |
3127 | ||
821d417e | 3128 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3129 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3130 | && ! NILP (elt) |
821d417e RS |
3131 | && !NILP (Vpurify_flag)) |
3132 | { | |
3133 | if (NILP (Vdoc_file_name)) | |
3134 | /* We have not yet called Snarf-documentation, so assume | |
3135 | this file is described in the DOC-MM.NN file | |
3136 | and Snarf-documentation will fill in the right value later. | |
3137 | For now, replace the whole list with 0. */ | |
3138 | doc_reference = 1; | |
3139 | else | |
3140 | /* We have already called Snarf-documentation, so make a relative | |
3141 | file name for this file, so it can be found properly | |
3142 | in the installed Lisp directory. | |
3143 | We don't use Fexpand_file_name because that would make | |
3144 | the directory absolute now. */ | |
3145 | elt = concat2 (build_string ("../lisp/"), | |
3146 | Ffile_name_nondirectory (elt)); | |
3147 | } | |
b2a30870 | 3148 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3149 | && ! NILP (elt) |
b2a30870 RS |
3150 | && load_force_doc_strings) |
3151 | doc_reference = 2; | |
20ea2964 | 3152 | |
6428369f | 3153 | if (ch) |
078e7b4a JB |
3154 | { |
3155 | if (flag > 0) | |
3156 | { | |
6428369f | 3157 | if (ch == ']') |
078e7b4a | 3158 | return val; |
336d4a9c | 3159 | invalid_syntax (") or . in a vector", 18); |
078e7b4a | 3160 | } |
6428369f | 3161 | if (ch == ')') |
078e7b4a | 3162 | return val; |
6428369f | 3163 | if (ch == '.') |
078e7b4a JB |
3164 | { |
3165 | GCPRO2 (val, tail); | |
265a9e55 | 3166 | if (!NILP (tail)) |
f5df591a | 3167 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3168 | else |
3169 | val = read0 (readcharfun); | |
17634846 | 3170 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3171 | UNGCPRO; |
6428369f | 3172 | if (ch == ')') |
821d417e RS |
3173 | { |
3174 | if (doc_reference == 1) | |
3175 | return make_number (0); | |
b2a30870 RS |
3176 | if (doc_reference == 2) |
3177 | { | |
3178 | /* Get a doc string from the file we are loading. | |
3179 | If it's in saved_doc_string, get it from there. */ | |
c1d497be | 3180 | int pos = XINT (XCDR (val)); |
c15cfd1f RS |
3181 | /* Position is negative for user variables. */ |
3182 | if (pos < 0) pos = -pos; | |
b2a30870 RS |
3183 | if (pos >= saved_doc_string_position |
3184 | && pos < (saved_doc_string_position | |
3185 | + saved_doc_string_length)) | |
3186 | { | |
3187 | int start = pos - saved_doc_string_position; | |
3188 | int from, to; | |
3189 | ||
3190 | /* Process quoting with ^A, | |
3191 | and find the end of the string, | |
3192 | which is marked with ^_ (037). */ | |
3193 | for (from = start, to = start; | |
3194 | saved_doc_string[from] != 037;) | |
3195 | { | |
3196 | int c = saved_doc_string[from++]; | |
3197 | if (c == 1) | |
3198 | { | |
3199 | c = saved_doc_string[from++]; | |
3200 | if (c == 1) | |
3201 | saved_doc_string[to++] = c; | |
3202 | else if (c == '0') | |
3203 | saved_doc_string[to++] = 0; | |
3204 | else if (c == '_') | |
3205 | saved_doc_string[to++] = 037; | |
3206 | } | |
3207 | else | |
3208 | saved_doc_string[to++] = c; | |
3209 | } | |
3210 | ||
3211 | return make_string (saved_doc_string + start, | |
3212 | to - start); | |
3213 | } | |
c15cfd1f RS |
3214 | /* Look in prev_saved_doc_string the same way. */ |
3215 | else if (pos >= prev_saved_doc_string_position | |
3216 | && pos < (prev_saved_doc_string_position | |
3217 | + prev_saved_doc_string_length)) | |
3218 | { | |
3219 | int start = pos - prev_saved_doc_string_position; | |
3220 | int from, to; | |
3221 | ||
3222 | /* Process quoting with ^A, | |
3223 | and find the end of the string, | |
3224 | which is marked with ^_ (037). */ | |
3225 | for (from = start, to = start; | |
3226 | prev_saved_doc_string[from] != 037;) | |
3227 | { | |
3228 | int c = prev_saved_doc_string[from++]; | |
3229 | if (c == 1) | |
3230 | { | |
3231 | c = prev_saved_doc_string[from++]; | |
3232 | if (c == 1) | |
3233 | prev_saved_doc_string[to++] = c; | |
3234 | else if (c == '0') | |
3235 | prev_saved_doc_string[to++] = 0; | |
3236 | else if (c == '_') | |
3237 | prev_saved_doc_string[to++] = 037; | |
3238 | } | |
3239 | else | |
3240 | prev_saved_doc_string[to++] = c; | |
3241 | } | |
3242 | ||
3243 | return make_string (prev_saved_doc_string + start, | |
3244 | to - start); | |
3245 | } | |
b2a30870 | 3246 | else |
6fe9cce5 | 3247 | return get_doc_string (val, 0, 0); |
b2a30870 RS |
3248 | } |
3249 | ||
821d417e RS |
3250 | return val; |
3251 | } | |
336d4a9c | 3252 | invalid_syntax (". in wrong context", 18); |
078e7b4a | 3253 | } |
336d4a9c | 3254 | invalid_syntax ("] in a list", 11); |
078e7b4a JB |
3255 | } |
3256 | tem = (read_pure && flag <= 0 | |
3257 | ? pure_cons (elt, Qnil) | |
3258 | : Fcons (elt, Qnil)); | |
265a9e55 | 3259 | if (!NILP (tail)) |
f5df591a | 3260 | XSETCDR (tail, tem); |
078e7b4a JB |
3261 | else |
3262 | val = tem; | |
3263 | tail = tem; | |
3264 | if (defunflag < 0) | |
3265 | defunflag = EQ (elt, Qdefun); | |
3266 | else if (defunflag > 0) | |
3267 | read_pure = 1; | |
3268 | } | |
3269 | } | |
3270 | \f | |
3271 | Lisp_Object Vobarray; | |
3272 | Lisp_Object initial_obarray; | |
3273 | ||
d007f5c8 RS |
3274 | /* oblookup stores the bucket number here, for the sake of Funintern. */ |
3275 | ||
3276 | int oblookup_last_bucket_number; | |
3277 | ||
3278 | static int hash_string (); | |
d007f5c8 RS |
3279 | |
3280 | /* Get an error if OBARRAY is not an obarray. | |
3281 | If it is one, return it. */ | |
3282 | ||
078e7b4a JB |
3283 | Lisp_Object |
3284 | check_obarray (obarray) | |
3285 | Lisp_Object obarray; | |
3286 | { | |
8878319c | 3287 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a JB |
3288 | { |
3289 | /* If Vobarray is now invalid, force it to be valid. */ | |
3290 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3291 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3292 | } |
3293 | return obarray; | |
3294 | } | |
3295 | ||
d007f5c8 RS |
3296 | /* Intern the C string STR: return a symbol with that name, |
3297 | interned in the current obarray. */ | |
078e7b4a JB |
3298 | |
3299 | Lisp_Object | |
3300 | intern (str) | |
4b2dd274 | 3301 | const char *str; |
078e7b4a JB |
3302 | { |
3303 | Lisp_Object tem; | |
3304 | int len = strlen (str); | |
153a17b7 | 3305 | Lisp_Object obarray; |
078e7b4a | 3306 | |
153a17b7 | 3307 | obarray = Vobarray; |
cfff016d | 3308 | if (!VECTORP (obarray) || XVECTOR (obarray)->size == 0) |
078e7b4a | 3309 | obarray = check_obarray (obarray); |
e28552a4 | 3310 | tem = oblookup (obarray, str, len, len); |
cfff016d | 3311 | if (SYMBOLP (tem)) |
078e7b4a | 3312 | return tem; |
87631ef7 | 3313 | return Fintern (make_string (str, len), obarray); |
078e7b4a | 3314 | } |
4ad679f9 EN |
3315 | |
3316 | /* Create an uninterned symbol with name STR. */ | |
3317 | ||
3318 | Lisp_Object | |
3319 | make_symbol (str) | |
3320 | char *str; | |
3321 | { | |
3322 | int len = strlen (str); | |
3323 | ||
3324 | return Fmake_symbol ((!NILP (Vpurify_flag) | |
491f16a2 | 3325 | ? make_pure_string (str, len, len, 0) |
4ad679f9 EN |
3326 | : make_string (str, len))); |
3327 | } | |
d007f5c8 | 3328 | \f |
078e7b4a | 3329 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3330 | doc: /* Return the canonical symbol whose name is STRING. |
3331 | If there is none, one is created by this function and returned. | |
3332 | A second optional argument specifies the obarray to use; | |
3333 | it defaults to the value of `obarray'. */) | |
3334 | (string, obarray) | |
9391b698 | 3335 | Lisp_Object string, obarray; |
078e7b4a JB |
3336 | { |
3337 | register Lisp_Object tem, sym, *ptr; | |
3338 | ||
265a9e55 | 3339 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3340 | obarray = check_obarray (obarray); |
3341 | ||
b7826503 | 3342 | CHECK_STRING (string); |
078e7b4a | 3343 | |
d5db4077 KR |
3344 | tem = oblookup (obarray, SDATA (string), |
3345 | SCHARS (string), | |
3346 | SBYTES (string)); | |
cfff016d | 3347 | if (!INTEGERP (tem)) |
078e7b4a JB |
3348 | return tem; |
3349 | ||
265a9e55 | 3350 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3351 | string = Fpurecopy (string); |
3352 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3353 | |
3354 | if (EQ (obarray, initial_obarray)) | |
3355 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3356 | else | |
3357 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3358 | |
d5db4077 | 3359 | if ((SREF (string, 0) == ':') |
a458d45d | 3360 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3361 | { |
3362 | XSYMBOL (sym)->constant = 1; | |
3363 | XSYMBOL (sym)->value = sym; | |
3364 | } | |
a0549832 | 3365 | |
078e7b4a | 3366 | ptr = &XVECTOR (obarray)->contents[XINT (tem)]; |
cfff016d | 3367 | if (SYMBOLP (*ptr)) |
078e7b4a JB |
3368 | XSYMBOL (sym)->next = XSYMBOL (*ptr); |
3369 | else | |
3370 | XSYMBOL (sym)->next = 0; | |
3371 | *ptr = sym; | |
3372 | return sym; | |
3373 | } | |
3374 | ||
3375 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, | |
5de38842 PJ |
3376 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3377 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3378 | symbol is searched for. | |
3379 | A second optional argument specifies the obarray to use; | |
3380 | it defaults to the value of `obarray'. */) | |
3381 | (name, obarray) | |
b55048d4 | 3382 | Lisp_Object name, obarray; |
078e7b4a | 3383 | { |
c2d47f4b | 3384 | register Lisp_Object tem, string; |
078e7b4a | 3385 | |
265a9e55 | 3386 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3387 | obarray = check_obarray (obarray); |
3388 | ||
b55048d4 GM |
3389 | if (!SYMBOLP (name)) |
3390 | { | |
b7826503 | 3391 | CHECK_STRING (name); |
c2d47f4b | 3392 | string = name; |
b55048d4 GM |
3393 | } |
3394 | else | |
c2d47f4b | 3395 | string = SYMBOL_NAME (name); |
078e7b4a | 3396 | |
c2d47f4b | 3397 | tem = oblookup (obarray, SDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3398 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3399 | return Qnil; | |
3400 | else | |
078e7b4a | 3401 | return tem; |
078e7b4a | 3402 | } |
d007f5c8 RS |
3403 | \f |
3404 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, | |
5de38842 PJ |
3405 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3406 | The value is t if a symbol was found and deleted, nil otherwise. | |
3407 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3408 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3409 | OBARRAY defaults to the value of the variable `obarray'. */) | |
3410 | (name, obarray) | |
d007f5c8 RS |
3411 | Lisp_Object name, obarray; |
3412 | { | |
3413 | register Lisp_Object string, tem; | |
3414 | int hash; | |
3415 | ||
3416 | if (NILP (obarray)) obarray = Vobarray; | |
3417 | obarray = check_obarray (obarray); | |
3418 | ||
3419 | if (SYMBOLP (name)) | |
d4c83cae | 3420 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3421 | else |
3422 | { | |
b7826503 | 3423 | CHECK_STRING (name); |
d007f5c8 RS |
3424 | string = name; |
3425 | } | |
3426 | ||
d5db4077 KR |
3427 | tem = oblookup (obarray, SDATA (string), |
3428 | SCHARS (string), | |
3429 | SBYTES (string)); | |
d007f5c8 RS |
3430 | if (INTEGERP (tem)) |
3431 | return Qnil; | |
3432 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3433 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3434 | return Qnil; | |
3435 | ||
44c6c019 GM |
3436 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
3437 | XSYMBOL (tem)->constant = 0; | |
3438 | XSYMBOL (tem)->indirect_variable = 0; | |
ca69c42f | 3439 | |
d007f5c8 RS |
3440 | hash = oblookup_last_bucket_number; |
3441 | ||
3442 | if (EQ (XVECTOR (obarray)->contents[hash], tem)) | |
b2a30870 RS |
3443 | { |
3444 | if (XSYMBOL (tem)->next) | |
3445 | XSETSYMBOL (XVECTOR (obarray)->contents[hash], XSYMBOL (tem)->next); | |
3446 | else | |
3447 | XSETINT (XVECTOR (obarray)->contents[hash], 0); | |
3448 | } | |
d007f5c8 RS |
3449 | else |
3450 | { | |
3451 | Lisp_Object tail, following; | |
3452 | ||
3453 | for (tail = XVECTOR (obarray)->contents[hash]; | |
3454 | XSYMBOL (tail)->next; | |
3455 | tail = following) | |
3456 | { | |
3457 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3458 | if (EQ (following, tem)) | |
3459 | { | |
3460 | XSYMBOL (tail)->next = XSYMBOL (following)->next; | |
3461 | break; | |
3462 | } | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | return Qt; | |
3467 | } | |
3468 | \f | |
3469 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3470 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3471 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3472 | |
3473 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3474 | |
3475 | Lisp_Object | |
e28552a4 | 3476 | oblookup (obarray, ptr, size, size_byte) |
078e7b4a | 3477 | Lisp_Object obarray; |
4b2dd274 | 3478 | register const char *ptr; |
e28552a4 | 3479 | int size, size_byte; |
078e7b4a | 3480 | { |
7a70b397 RS |
3481 | int hash; |
3482 | int obsize; | |
078e7b4a JB |
3483 | register Lisp_Object tail; |
3484 | Lisp_Object bucket, tem; | |
3485 | ||
cfff016d | 3486 | if (!VECTORP (obarray) |
7c79a684 | 3487 | || (obsize = XVECTOR (obarray)->size) == 0) |
078e7b4a JB |
3488 | { |
3489 | obarray = check_obarray (obarray); | |
3490 | obsize = XVECTOR (obarray)->size; | |
3491 | } | |
519418b3 RS |
3492 | /* This is sometimes needed in the middle of GC. */ |
3493 | obsize &= ~ARRAY_MARK_FLAG; | |
078e7b4a | 3494 | /* Combining next two lines breaks VMS C 2.3. */ |
e28552a4 | 3495 | hash = hash_string (ptr, size_byte); |
078e7b4a JB |
3496 | hash %= obsize; |
3497 | bucket = XVECTOR (obarray)->contents[hash]; | |
d007f5c8 | 3498 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3499 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3500 | ; |
cfff016d | 3501 | else if (!SYMBOLP (bucket)) |
078e7b4a | 3502 | error ("Bad data in guts of obarray"); /* Like CADR error message */ |
d007f5c8 RS |
3503 | else |
3504 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3505 | { |
d5db4077 KR |
3506 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3507 | && SCHARS (SYMBOL_NAME (tail)) == size | |
3508 | && !bcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) | |
078e7b4a JB |
3509 | return tail; |
3510 | else if (XSYMBOL (tail)->next == 0) | |
3511 | break; | |
3512 | } | |
1805de4f | 3513 | XSETINT (tem, hash); |
078e7b4a JB |
3514 | return tem; |
3515 | } | |
3516 | ||
3517 | static int | |
3518 | hash_string (ptr, len) | |
4b2dd274 | 3519 | const unsigned char *ptr; |
078e7b4a JB |
3520 | int len; |
3521 | { | |
4b2dd274 KR |
3522 | register const unsigned char *p = ptr; |
3523 | register const unsigned char *end = p + len; | |
078e7b4a JB |
3524 | register unsigned char c; |
3525 | register int hash = 0; | |
3526 | ||
3527 | while (p != end) | |
3528 | { | |
3529 | c = *p++; | |
3530 | if (c >= 0140) c -= 40; | |
3531 | hash = ((hash<<3) + (hash>>28) + c); | |
3532 | } | |
3533 | return hash & 07777777777; | |
3534 | } | |
d007f5c8 | 3535 | \f |
078e7b4a JB |
3536 | void |
3537 | map_obarray (obarray, fn, arg) | |
3538 | Lisp_Object obarray; | |
d5b28a9d | 3539 | void (*fn) P_ ((Lisp_Object, Lisp_Object)); |
078e7b4a JB |
3540 | Lisp_Object arg; |
3541 | { | |
3542 | register int i; | |
3543 | register Lisp_Object tail; | |
b7826503 | 3544 | CHECK_VECTOR (obarray); |
078e7b4a JB |
3545 | for (i = XVECTOR (obarray)->size - 1; i >= 0; i--) |
3546 | { | |
3547 | tail = XVECTOR (obarray)->contents[i]; | |
4f5c4403 | 3548 | if (SYMBOLP (tail)) |
078e7b4a JB |
3549 | while (1) |
3550 | { | |
3551 | (*fn) (tail, arg); | |
3552 | if (XSYMBOL (tail)->next == 0) | |
3553 | break; | |
1805de4f | 3554 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3555 | } |
3556 | } | |
3557 | } | |
3558 | ||
d5b28a9d | 3559 | void |
078e7b4a JB |
3560 | mapatoms_1 (sym, function) |
3561 | Lisp_Object sym, function; | |
3562 | { | |
3563 | call1 (function, sym); | |
3564 | } | |
3565 | ||
3566 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3567 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3568 | OBARRAY defaults to the value of `obarray'. */) | |
3569 | (function, obarray) | |
078e7b4a JB |
3570 | Lisp_Object function, obarray; |
3571 | { | |
265a9e55 | 3572 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3573 | obarray = check_obarray (obarray); |
3574 | ||
3575 | map_obarray (obarray, mapatoms_1, function); | |
3576 | return Qnil; | |
3577 | } | |
3578 | ||
5e88a39e | 3579 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3580 | |
3581 | void | |
3582 | init_obarray () | |
3583 | { | |
3584 | Lisp_Object oblength; | |
3585 | int hash; | |
3586 | Lisp_Object *tem; | |
3587 | ||
baf69866 | 3588 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3589 | |
491f16a2 | 3590 | Qnil = Fmake_symbol (make_pure_string ("nil", 3, 3, 0)); |
078e7b4a JB |
3591 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3592 | initial_obarray = Vobarray; | |
3593 | staticpro (&initial_obarray); | |
3594 | /* Intern nil in the obarray */ | |
44c6c019 GM |
3595 | XSYMBOL (Qnil)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; |
3596 | XSYMBOL (Qnil)->constant = 1; | |
177c0ea7 | 3597 | |
078e7b4a JB |
3598 | /* These locals are to kludge around a pyramid compiler bug. */ |
3599 | hash = hash_string ("nil", 3); | |
3600 | /* Separate statement here to avoid VAXC bug. */ | |
3601 | hash %= OBARRAY_SIZE; | |
3602 | tem = &XVECTOR (Vobarray)->contents[hash]; | |
3603 | *tem = Qnil; | |
3604 | ||
491f16a2 | 3605 | Qunbound = Fmake_symbol (make_pure_string ("unbound", 7, 7, 0)); |
078e7b4a JB |
3606 | XSYMBOL (Qnil)->function = Qunbound; |
3607 | XSYMBOL (Qunbound)->value = Qunbound; | |
3608 | XSYMBOL (Qunbound)->function = Qunbound; | |
3609 | ||
3610 | Qt = intern ("t"); | |
3611 | XSYMBOL (Qnil)->value = Qnil; | |
3612 | XSYMBOL (Qnil)->plist = Qnil; | |
3613 | XSYMBOL (Qt)->value = Qt; | |
44c6c019 | 3614 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
3615 | |
3616 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
3617 | Vpurify_flag = Qt; | |
3618 | ||
3619 | Qvariable_documentation = intern ("variable-documentation"); | |
0f73bb1c | 3620 | staticpro (&Qvariable_documentation); |
078e7b4a | 3621 | |
449fea39 | 3622 | read_buffer_size = 100 + MAX_MULTIBYTE_LENGTH; |
3cb65b0e | 3623 | read_buffer = (char *) xmalloc (read_buffer_size); |
078e7b4a JB |
3624 | } |
3625 | \f | |
3626 | void | |
3627 | defsubr (sname) | |
3628 | struct Lisp_Subr *sname; | |
3629 | { | |
3630 | Lisp_Object sym; | |
3631 | sym = intern (sname->symbol_name); | |
1805de4f | 3632 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3633 | } |
3634 | ||
3635 | #ifdef NOTDEF /* use fset in subr.el now */ | |
3636 | void | |
3637 | defalias (sname, string) | |
3638 | struct Lisp_Subr *sname; | |
3639 | char *string; | |
3640 | { | |
3641 | Lisp_Object sym; | |
3642 | sym = intern (string); | |
1805de4f | 3643 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
3644 | } |
3645 | #endif /* NOTDEF */ | |
3646 | ||
078e7b4a | 3647 | /* Define an "integer variable"; a symbol whose value is forwarded |
1a0f90f7 | 3648 | to a C variable of type int. Sample call: */ |
5de38842 | 3649 | /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */ |
078e7b4a | 3650 | void |
e9e00ff2 | 3651 | defvar_int (namestring, address) |
078e7b4a | 3652 | char *namestring; |
31ade731 | 3653 | EMACS_INT *address; |
078e7b4a | 3654 | { |
1a0f90f7 | 3655 | Lisp_Object sym, val; |
078e7b4a | 3656 | sym = intern (namestring); |
1a0f90f7 | 3657 | val = allocate_misc (); |
47e28b2c | 3658 | XMISCTYPE (val) = Lisp_Misc_Intfwd; |
fc1e7df5 | 3659 | XINTFWD (val)->intvar = address; |
44c6c019 | 3660 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3661 | } |
3662 | ||
f0529b5b PJ |
3663 | /* Similar but define a variable whose value is t if address contains 1, |
3664 | nil if address contains 0 */ | |
078e7b4a | 3665 | void |
e9e00ff2 | 3666 | defvar_bool (namestring, address) |
078e7b4a JB |
3667 | char *namestring; |
3668 | int *address; | |
078e7b4a | 3669 | { |
1a0f90f7 | 3670 | Lisp_Object sym, val; |
078e7b4a | 3671 | sym = intern (namestring); |
1a0f90f7 | 3672 | val = allocate_misc (); |
47e28b2c | 3673 | XMISCTYPE (val) = Lisp_Misc_Boolfwd; |
fc1e7df5 | 3674 | XBOOLFWD (val)->boolvar = address; |
44c6c019 | 3675 | SET_SYMBOL_VALUE (sym, val); |
1ffcc3b1 | 3676 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
3677 | } |
3678 | ||
1a0f90f7 KH |
3679 | /* Similar but define a variable whose value is the Lisp Object stored |
3680 | at address. Two versions: with and without gc-marking of the C | |
3681 | variable. The nopro version is used when that variable will be | |
3682 | gc-marked for some other reason, since marking the same slot twice | |
3683 | can cause trouble with strings. */ | |
078e7b4a | 3684 | void |
1a0f90f7 | 3685 | defvar_lisp_nopro (namestring, address) |
078e7b4a JB |
3686 | char *namestring; |
3687 | Lisp_Object *address; | |
078e7b4a | 3688 | { |
1a0f90f7 | 3689 | Lisp_Object sym, val; |
078e7b4a | 3690 | sym = intern (namestring); |
1a0f90f7 | 3691 | val = allocate_misc (); |
47e28b2c | 3692 | XMISCTYPE (val) = Lisp_Misc_Objfwd; |
fc1e7df5 | 3693 | XOBJFWD (val)->objvar = address; |
44c6c019 | 3694 | SET_SYMBOL_VALUE (sym, val); |
078e7b4a JB |
3695 | } |
3696 | ||
078e7b4a | 3697 | void |
1a0f90f7 | 3698 | defvar_lisp (namestring, address) |
078e7b4a JB |
3699 | char *namestring; |
3700 | Lisp_Object *address; | |
078e7b4a | 3701 | { |
1a0f90f7 KH |
3702 | defvar_lisp_nopro (namestring, address); |
3703 | staticpro (address); | |
078e7b4a JB |
3704 | } |
3705 | ||
078e7b4a | 3706 | /* Similar but define a variable whose value is the Lisp Object stored in |
2836d9a4 KH |
3707 | the current buffer. address is the address of the slot in the buffer |
3708 | that is current now. */ | |
078e7b4a JB |
3709 | |
3710 | void | |
4360b0c6 | 3711 | defvar_per_buffer (namestring, address, type, doc) |
078e7b4a JB |
3712 | char *namestring; |
3713 | Lisp_Object *address; | |
4360b0c6 | 3714 | Lisp_Object type; |
078e7b4a JB |
3715 | char *doc; |
3716 | { | |
1a0f90f7 | 3717 | Lisp_Object sym, val; |
078e7b4a | 3718 | int offset; |
078e7b4a JB |
3719 | |
3720 | sym = intern (namestring); | |
1a0f90f7 | 3721 | val = allocate_misc (); |
078e7b4a JB |
3722 | offset = (char *)address - (char *)current_buffer; |
3723 | ||
47e28b2c | 3724 | XMISCTYPE (val) = Lisp_Misc_Buffer_Objfwd; |
fc1e7df5 | 3725 | XBUFFER_OBJFWD (val)->offset = offset; |
44c6c019 | 3726 | SET_SYMBOL_VALUE (sym, val); |
11fd416e GM |
3727 | PER_BUFFER_SYMBOL (offset) = sym; |
3728 | PER_BUFFER_TYPE (offset) = type; | |
177c0ea7 | 3729 | |
11fd416e | 3730 | if (PER_BUFFER_IDX (offset) == 0) |
078e7b4a JB |
3731 | /* Did a DEFVAR_PER_BUFFER without initializing the corresponding |
3732 | slot of buffer_local_flags */ | |
3733 | abort (); | |
3734 | } | |
3735 | ||
950c215d KH |
3736 | |
3737 | /* Similar but define a variable whose value is the Lisp Object stored | |
4ac38690 | 3738 | at a particular offset in the current kboard object. */ |
950c215d KH |
3739 | |
3740 | void | |
4ac38690 | 3741 | defvar_kboard (namestring, offset) |
950c215d KH |
3742 | char *namestring; |
3743 | int offset; | |
3744 | { | |
3745 | Lisp_Object sym, val; | |
3746 | sym = intern (namestring); | |
3747 | val = allocate_misc (); | |
47e28b2c | 3748 | XMISCTYPE (val) = Lisp_Misc_Kboard_Objfwd; |
4ac38690 | 3749 | XKBOARD_OBJFWD (val)->offset = offset; |
44c6c019 | 3750 | SET_SYMBOL_VALUE (sym, val); |
950c215d | 3751 | } |
078e7b4a | 3752 | \f |
11938f10 KH |
3753 | /* Record the value of load-path used at the start of dumping |
3754 | so we can see if the site changed it later during dumping. */ | |
3755 | static Lisp_Object dump_path; | |
3756 | ||
d5b28a9d | 3757 | void |
279499f0 | 3758 | init_lread () |
078e7b4a | 3759 | { |
46947372 | 3760 | char *normal; |
e73997a1 | 3761 | int turn_off_warning = 0; |
078e7b4a | 3762 | |
279499f0 | 3763 | /* Compute the default load-path. */ |
46947372 JB |
3764 | #ifdef CANNOT_DUMP |
3765 | normal = PATH_LOADSEARCH; | |
e065a56e | 3766 | Vload_path = decode_env_path (0, normal); |
46947372 JB |
3767 | #else |
3768 | if (NILP (Vpurify_flag)) | |
3769 | normal = PATH_LOADSEARCH; | |
279499f0 | 3770 | else |
46947372 | 3771 | normal = PATH_DUMPLOADSEARCH; |
279499f0 | 3772 | |
46947372 JB |
3773 | /* In a dumped Emacs, we normally have to reset the value of |
3774 | Vload_path from PATH_LOADSEARCH, since the value that was dumped | |
3775 | uses ../lisp, instead of the path of the installed elisp | |
3776 | libraries. However, if it appears that Vload_path was changed | |
3777 | from the default before dumping, don't override that value. */ | |
4746118a JB |
3778 | if (initialized) |
3779 | { | |
4746118a | 3780 | if (! NILP (Fequal (dump_path, Vload_path))) |
80667d53 RS |
3781 | { |
3782 | Vload_path = decode_env_path (0, normal); | |
74180aa4 | 3783 | if (!NILP (Vinstallation_directory)) |
80667d53 | 3784 | { |
3ddff138 RS |
3785 | Lisp_Object tem, tem1, sitelisp; |
3786 | ||
3787 | /* Remove site-lisp dirs from path temporarily and store | |
3788 | them in sitelisp, then conc them on at the end so | |
3789 | they're always first in path. */ | |
3790 | sitelisp = Qnil; | |
3791 | while (1) | |
3792 | { | |
3793 | tem = Fcar (Vload_path); | |
3794 | tem1 = Fstring_match (build_string ("site-lisp"), | |
3795 | tem, Qnil); | |
3796 | if (!NILP (tem1)) | |
3797 | { | |
3798 | Vload_path = Fcdr (Vload_path); | |
3799 | sitelisp = Fcons (tem, sitelisp); | |
3800 | } | |
3801 | else | |
3802 | break; | |
3803 | } | |
3804 | ||
74180aa4 | 3805 | /* Add to the path the lisp subdir of the |
3a3056e5 | 3806 | installation dir, if it exists. */ |
74180aa4 RS |
3807 | tem = Fexpand_file_name (build_string ("lisp"), |
3808 | Vinstallation_directory); | |
3a3056e5 RS |
3809 | tem1 = Ffile_exists_p (tem); |
3810 | if (!NILP (tem1)) | |
3811 | { | |
3812 | if (NILP (Fmember (tem, Vload_path))) | |
e73997a1 RS |
3813 | { |
3814 | turn_off_warning = 1; | |
3ddff138 | 3815 | Vload_path = Fcons (tem, Vload_path); |
e73997a1 | 3816 | } |
3a3056e5 RS |
3817 | } |
3818 | else | |
3819 | /* That dir doesn't exist, so add the build-time | |
3820 | Lisp dirs instead. */ | |
3821 | Vload_path = nconc2 (Vload_path, dump_path); | |
c478f98c | 3822 | |
9fbc0116 RS |
3823 | /* Add leim under the installation dir, if it exists. */ |
3824 | tem = Fexpand_file_name (build_string ("leim"), | |
3825 | Vinstallation_directory); | |
3826 | tem1 = Ffile_exists_p (tem); | |
3827 | if (!NILP (tem1)) | |
3828 | { | |
3829 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3830 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 RS |
3831 | } |
3832 | ||
c478f98c RS |
3833 | /* Add site-list under the installation dir, if it exists. */ |
3834 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
3835 | Vinstallation_directory); | |
3836 | tem1 = Ffile_exists_p (tem); | |
3837 | if (!NILP (tem1)) | |
3838 | { | |
3839 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3840 | Vload_path = Fcons (tem, Vload_path); |
c478f98c | 3841 | } |
0f337465 RS |
3842 | |
3843 | /* If Emacs was not built in the source directory, | |
9fbc0116 RS |
3844 | and it is run from where it was built, add to load-path |
3845 | the lisp, leim and site-lisp dirs under that directory. */ | |
0f337465 RS |
3846 | |
3847 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
3848 | { | |
33046fc9 RS |
3849 | Lisp_Object tem2; |
3850 | ||
0f337465 RS |
3851 | tem = Fexpand_file_name (build_string ("src/Makefile"), |
3852 | Vinstallation_directory); | |
3853 | tem1 = Ffile_exists_p (tem); | |
33046fc9 RS |
3854 | |
3855 | /* Don't be fooled if they moved the entire source tree | |
3856 | AFTER dumping Emacs. If the build directory is indeed | |
3857 | different from the source dir, src/Makefile.in and | |
3858 | src/Makefile will not be found together. */ | |
3859 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
3860 | Vinstallation_directory); | |
3861 | tem2 = Ffile_exists_p (tem); | |
3862 | if (!NILP (tem1) && NILP (tem2)) | |
0f337465 RS |
3863 | { |
3864 | tem = Fexpand_file_name (build_string ("lisp"), | |
3865 | Vsource_directory); | |
3866 | ||
3867 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3868 | Vload_path = Fcons (tem, Vload_path); |
0f337465 | 3869 | |
9fbc0116 RS |
3870 | tem = Fexpand_file_name (build_string ("leim"), |
3871 | Vsource_directory); | |
3872 | ||
3873 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3874 | Vload_path = Fcons (tem, Vload_path); |
9fbc0116 | 3875 | |
0f337465 RS |
3876 | tem = Fexpand_file_name (build_string ("site-lisp"), |
3877 | Vsource_directory); | |
3878 | ||
3879 | if (NILP (Fmember (tem, Vload_path))) | |
3ddff138 | 3880 | Vload_path = Fcons (tem, Vload_path); |
0f337465 RS |
3881 | } |
3882 | } | |
3ddff138 RS |
3883 | if (!NILP (sitelisp)) |
3884 | Vload_path = nconc2 (Fnreverse (sitelisp), Vload_path); | |
80667d53 RS |
3885 | } |
3886 | } | |
4746118a JB |
3887 | } |
3888 | else | |
11938f10 | 3889 | { |
7b396c6c RS |
3890 | /* NORMAL refers to the lisp dir in the source directory. */ |
3891 | /* We used to add ../lisp at the front here, but | |
3892 | that caused trouble because it was copied from dump_path | |
3893 | into Vload_path, aboe, when Vinstallation_directory was non-nil. | |
3894 | It should be unnecessary. */ | |
3895 | Vload_path = decode_env_path (0, normal); | |
11938f10 KH |
3896 | dump_path = Vload_path; |
3897 | } | |
46947372 | 3898 | #endif |
279499f0 | 3899 | |
536d6baa | 3900 | #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON)))) |
177c0ea7 JB |
3901 | /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is |
3902 | almost never correct, thereby causing a warning to be printed out that | |
8e6208c5 | 3903 | confuses users. Since PATH_LOADSEARCH is always overridden by the |
95af0924 | 3904 | EMACSLOADPATH environment variable below, disable the warning on NT. |
f3d5f92d ST |
3905 | Also, when using the "self-contained" option for Carbon Emacs for MacOSX, |
3906 | the "standard" paths may not exist and would be overridden by | |
3907 | EMACSLOADPATH as on NT. Since this depends on how the executable | |
3908 | was build and packaged, turn off the warnings in general */ | |
317073d5 | 3909 | |
078e7b4a | 3910 | /* Warn if dirs in the *standard* path don't exist. */ |
e73997a1 RS |
3911 | if (!turn_off_warning) |
3912 | { | |
3913 | Lisp_Object path_tail; | |
078e7b4a | 3914 | |
e73997a1 RS |
3915 | for (path_tail = Vload_path; |
3916 | !NILP (path_tail); | |
c1d497be | 3917 | path_tail = XCDR (path_tail)) |
e73997a1 RS |
3918 | { |
3919 | Lisp_Object dirfile; | |
3920 | dirfile = Fcar (path_tail); | |
3921 | if (STRINGP (dirfile)) | |
3922 | { | |
3923 | dirfile = Fdirectory_file_name (dirfile); | |
d5db4077 | 3924 | if (access (SDATA (dirfile), 0) < 0) |
85496b8c | 3925 | dir_warning ("Warning: Lisp directory `%s' does not exist.\n", |
c1d497be | 3926 | XCAR (path_tail)); |
e73997a1 RS |
3927 | } |
3928 | } | |
3929 | } | |
536d6baa | 3930 | #endif /* !(WINDOWSNT || HAVE_CARBON) */ |
46947372 JB |
3931 | |
3932 | /* If the EMACSLOADPATH environment variable is set, use its value. | |
3933 | This doesn't apply if we're dumping. */ | |
ffd9c2a1 | 3934 | #ifndef CANNOT_DUMP |
46947372 JB |
3935 | if (NILP (Vpurify_flag) |
3936 | && egetenv ("EMACSLOADPATH")) | |
ffd9c2a1 | 3937 | #endif |
279499f0 | 3938 | Vload_path = decode_env_path ("EMACSLOADPATH", normal); |
279499f0 JB |
3939 | |
3940 | Vvalues = Qnil; | |
3941 | ||
078e7b4a | 3942 | load_in_progress = 0; |
4e53f562 | 3943 | Vload_file_name = Qnil; |
d2c6be7f RS |
3944 | |
3945 | load_descriptor_list = Qnil; | |
8f6b0411 RS |
3946 | |
3947 | Vstandard_input = Qt; | |
f74b0705 | 3948 | Vloads_in_progress = Qnil; |
078e7b4a JB |
3949 | } |
3950 | ||
85496b8c RS |
3951 | /* Print a warning, using format string FORMAT, that directory DIRNAME |
3952 | does not exist. Print it on stderr and put it in *Message*. */ | |
3953 | ||
d5b28a9d | 3954 | void |
85496b8c RS |
3955 | dir_warning (format, dirname) |
3956 | char *format; | |
3957 | Lisp_Object dirname; | |
3958 | { | |
3959 | char *buffer | |
d5db4077 | 3960 | = (char *) alloca (SCHARS (dirname) + strlen (format) + 5); |
85496b8c | 3961 | |
d5db4077 KR |
3962 | fprintf (stderr, format, SDATA (dirname)); |
3963 | sprintf (buffer, format, SDATA (dirname)); | |
9b69357e GV |
3964 | /* Don't log the warning before we've initialized!! */ |
3965 | if (initialized) | |
3966 | message_dolog (buffer, strlen (buffer), 0, STRING_MULTIBYTE (dirname)); | |
85496b8c RS |
3967 | } |
3968 | ||
078e7b4a | 3969 | void |
279499f0 | 3970 | syms_of_lread () |
078e7b4a JB |
3971 | { |
3972 | defsubr (&Sread); | |
3973 | defsubr (&Sread_from_string); | |
3974 | defsubr (&Sintern); | |
3975 | defsubr (&Sintern_soft); | |
d007f5c8 | 3976 | defsubr (&Sunintern); |
971a4293 | 3977 | defsubr (&Sget_load_suffixes); |
078e7b4a | 3978 | defsubr (&Sload); |
228d4b1c | 3979 | defsubr (&Seval_buffer); |
078e7b4a JB |
3980 | defsubr (&Seval_region); |
3981 | defsubr (&Sread_char); | |
3982 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 3983 | defsubr (&Sread_event); |
078e7b4a JB |
3984 | defsubr (&Sget_file_char); |
3985 | defsubr (&Smapatoms); | |
86d00812 | 3986 | defsubr (&Slocate_file_internal); |
078e7b4a JB |
3987 | |
3988 | DEFVAR_LISP ("obarray", &Vobarray, | |
5de38842 PJ |
3989 | doc: /* Symbol table for use by `intern' and `read'. |
3990 | It is a vector whose length ought to be prime for best results. | |
3991 | The vector's contents don't make sense if examined from Lisp programs; | |
3992 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a JB |
3993 | |
3994 | DEFVAR_LISP ("values", &Vvalues, | |
5de38842 PJ |
3995 | doc: /* List of values of all expressions which were read, evaluated and printed. |
3996 | Order is reverse chronological. */); | |
078e7b4a JB |
3997 | |
3998 | DEFVAR_LISP ("standard-input", &Vstandard_input, | |
5de38842 PJ |
3999 | doc: /* Stream for read to get input from. |
4000 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4001 | Vstandard_input = Qt; |
4002 | ||
abb13b09 CW |
4003 | DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions, |
4004 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. | |
4005 | ||
4006 | If this variable is a buffer, then only forms read from that buffer | |
4007 | will be added to `read-symbol-positions-list'. | |
4008 | If this variable is t, then all read forms will be added. | |
4009 | The effect of all other values other than nil are not currently | |
4010 | defined, although they may be in the future. | |
4011 | ||
4012 | The positions are relative to the last call to `read' or | |
4013 | `read-from-string'. It is probably a bad idea to set this variable at | |
4014 | the toplevel; bind it instead. */); | |
4015 | Vread_with_symbol_positions = Qnil; | |
4016 | ||
4017 | DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list, | |
d6567030 | 4018 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4019 | This variable is modified during calls to `read' or |
4020 | `read-from-string', but only when `read-with-symbol-positions' is | |
4021 | non-nil. | |
4022 | ||
4023 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4024 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4025 | symbol from the position where `read' or `read-from-string' started. |
4026 | ||
4027 | Note that a symbol will appear multiple times in this list, if it was | |
4028 | read multiple times. The list is in the same order as the symbols | |
4029 | were read in. */); | |
177c0ea7 | 4030 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4031 | |
078e7b4a | 4032 | DEFVAR_LISP ("load-path", &Vload_path, |
5de38842 PJ |
4033 | doc: /* *List of directories to search for files to load. |
4034 | Each element is a string (directory name) or nil (try default directory). | |
4035 | Initialized based on EMACSLOADPATH environment variable, if any, | |
4036 | otherwise to default specified by file `epaths.h' when Emacs was built. */); | |
078e7b4a | 4037 | |
e61b9b87 | 4038 | DEFVAR_LISP ("load-suffixes", &Vload_suffixes, |
971a4293 LT |
4039 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4040 | This list should not include the empty string. | |
4041 | `load' and related functions try to append these suffixes, in order, | |
4042 | to the specified file name if a Lisp suffix is allowed or required. */); | |
e61b9b87 SM |
4043 | Vload_suffixes = Fcons (build_string (".elc"), |
4044 | Fcons (build_string (".el"), Qnil)); | |
971a4293 LT |
4045 | DEFVAR_LISP ("load-file-rep-suffixes", &Vload_file_rep_suffixes, |
4046 | doc: /* List of suffixes that indicate representations of \ | |
4047 | the same file. | |
4048 | This list should normally start with the empty string. | |
4049 | ||
4050 | Enabling Auto Compression mode appends the suffixes in | |
4051 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4052 | mode removes them again. `load' and related functions use this list to | |
4053 | determine whether they should look for compressed versions of a file | |
4054 | and, if so, which suffixes they should try to append to the file name | |
4055 | in order to do so. However, if you want to customize which suffixes | |
4056 | the loading functions recognize as compression suffixes, you should | |
4057 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
ddb716ef | 4058 | /* We don't use empty_string because it's not initialized yet. */ |
971a4293 | 4059 | Vload_file_rep_suffixes = Fcons (build_string (""), Qnil); |
e61b9b87 | 4060 | |
078e7b4a | 4061 | DEFVAR_BOOL ("load-in-progress", &load_in_progress, |
5de38842 | 4062 | doc: /* Non-nil iff inside of `load'. */); |
078e7b4a JB |
4063 | |
4064 | DEFVAR_LISP ("after-load-alist", &Vafter_load_alist, | |
5de38842 | 4065 | doc: /* An alist of expressions to be evalled when particular files are loaded. |
6bb6da3e AM |
4066 | Each element looks like (REGEXP-OR-FEATURE FORMS...). |
4067 | ||
4068 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4069 | a symbol \(a feature name). | |
4070 | ||
4071 | When `load' is run and the file-name argument matches an element's | |
4072 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
4073 | REGEXP-OR-FEATURE, the FORMS in the element are executed. | |
4074 | ||
4075 | An error in FORMS does not undo the load, but does prevent execution of | |
4076 | the rest of the FORMS. */); | |
078e7b4a JB |
4077 | Vafter_load_alist = Qnil; |
4078 | ||
ae321d28 | 4079 | DEFVAR_LISP ("load-history", &Vload_history, |
0fc213e9 | 4080 | doc: /* Alist mapping file names to symbols and features. |
5de38842 PJ |
4081 | Each alist element is a list that starts with a file name, |
4082 | except for one element (optional) that starts with nil and describes | |
4083 | definitions evaluated from buffers not visiting files. | |
6bb6da3e AM |
4084 | |
4085 | The file name is absolute and is the true file name (i.e. it doesn't | |
4086 | contain symbolic links) of the loaded file. | |
4087 | ||
1bc2cdb1 | 4088 | The remaining elements of each list are symbols defined as variables |
d642e4f9 | 4089 | and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)', |
1bc2cdb1 RS |
4090 | `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'. |
4091 | An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)', | |
6042a06e | 4092 | and means that SYMBOL was an autoload before this file redefined it |
0fc213e9 RS |
4093 | as a function. |
4094 | ||
b502a9a1 RS |
4095 | During preloading, the file name recorded is relative to the main Lisp |
4096 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4097 | Vload_history = Qnil; |
4098 | ||
20ea2964 | 4099 | DEFVAR_LISP ("load-file-name", &Vload_file_name, |
5de38842 | 4100 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4101 | Vload_file_name = Qnil; |
4102 | ||
4116ab9f | 4103 | DEFVAR_LISP ("user-init-file", &Vuser_init_file, |
5de38842 | 4104 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4105 | If the file loaded had extension `.elc', and the corresponding source file |
4106 | exists, this variable contains the name of source file, suitable for use | |
5de38842 | 4107 | by functions like `custom-save-all' which edit the init file. */); |
4116ab9f KH |
4108 | Vuser_init_file = Qnil; |
4109 | ||
8a1f1537 | 4110 | DEFVAR_LISP ("current-load-list", &Vcurrent_load_list, |
5de38842 | 4111 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4112 | Vcurrent_load_list = Qnil; |
4113 | ||
84a15045 | 4114 | DEFVAR_LISP ("load-read-function", &Vload_read_function, |
5de38842 PJ |
4115 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4116 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4117 | Vload_read_function = Qnil; |
4118 | ||
fe0e03f3 | 4119 | DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function, |
9b33a603 | 4120 | doc: /* Function called in `load' for loading an Emacs Lisp source file. |
5de38842 PJ |
4121 | This function is for doing code conversion before reading the source file. |
4122 | If nil, loading is done without any code conversion. | |
4123 | Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where | |
4124 | FULLNAME is the full name of FILE. | |
4125 | See `load' for the meaning of the remaining arguments. */); | |
fe0e03f3 KH |
4126 | Vload_source_file_function = Qnil; |
4127 | ||
b2a30870 | 4128 | DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings, |
5de38842 PJ |
4129 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4130 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4131 | load_force_doc_strings = 0; |
4132 | ||
94e554db | 4133 | DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte, |
5de38842 PJ |
4134 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4135 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4136 | and is not meant for users to change. */); | |
94e554db RS |
4137 | load_convert_to_unibyte = 0; |
4138 | ||
1521a8fa | 4139 | DEFVAR_LISP ("source-directory", &Vsource_directory, |
5de38842 PJ |
4140 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4141 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4142 | Vsource_directory |
4143 | = Fexpand_file_name (build_string ("../"), | |
4144 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH))); | |
4145 | ||
4b104c41 | 4146 | DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list, |
5de38842 | 4147 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4148 | Vpreloaded_file_list = Qnil; |
4149 | ||
1ffcc3b1 | 4150 | DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars, |
5de38842 | 4151 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4152 | Vbyte_boolean_vars = Qnil; |
4153 | ||
da84f340 | 4154 | DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries, |
5de38842 PJ |
4155 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4156 | Some versions of XEmacs use different byte codes than Emacs. These | |
4157 | incompatible byte codes can make Emacs crash when it tries to execute | |
4158 | them. */); | |
da84f340 GM |
4159 | load_dangerous_libraries = 0; |
4160 | ||
bb970e67 | 4161 | DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp, |
5de38842 PJ |
4162 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4163 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4164 | from the file, and matches them against this regular expression. | |
4165 | When the regular expression matches, the file is considered to be safe | |
4166 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4167 | Vbytecomp_version_regexp |
f2e7d5eb | 4168 | = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4169 | |
3f39f996 RS |
4170 | DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list, |
4171 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); | |
4172 | Veval_buffer_list = Qnil; | |
4173 | ||
a90ba1e2 KH |
4174 | /* Vsource_directory was initialized in init_lread. */ |
4175 | ||
d2c6be7f RS |
4176 | load_descriptor_list = Qnil; |
4177 | staticpro (&load_descriptor_list); | |
4178 | ||
8a1f1537 RS |
4179 | Qcurrent_load_list = intern ("current-load-list"); |
4180 | staticpro (&Qcurrent_load_list); | |
4181 | ||
078e7b4a JB |
4182 | Qstandard_input = intern ("standard-input"); |
4183 | staticpro (&Qstandard_input); | |
4184 | ||
4185 | Qread_char = intern ("read-char"); | |
4186 | staticpro (&Qread_char); | |
4187 | ||
4188 | Qget_file_char = intern ("get-file-char"); | |
4189 | staticpro (&Qget_file_char); | |
7bd279cd | 4190 | |
17634846 RS |
4191 | Qbackquote = intern ("`"); |
4192 | staticpro (&Qbackquote); | |
4193 | Qcomma = intern (","); | |
4194 | staticpro (&Qcomma); | |
4195 | Qcomma_at = intern (",@"); | |
4196 | staticpro (&Qcomma_at); | |
4197 | Qcomma_dot = intern (",."); | |
4198 | staticpro (&Qcomma_dot); | |
4199 | ||
74549846 RS |
4200 | Qinhibit_file_name_operation = intern ("inhibit-file-name-operation"); |
4201 | staticpro (&Qinhibit_file_name_operation); | |
4202 | ||
7bd279cd RS |
4203 | Qascii_character = intern ("ascii-character"); |
4204 | staticpro (&Qascii_character); | |
c2225d00 | 4205 | |
2b6cae0c RS |
4206 | Qfunction = intern ("function"); |
4207 | staticpro (&Qfunction); | |
4208 | ||
c2225d00 RS |
4209 | Qload = intern ("load"); |
4210 | staticpro (&Qload); | |
20ea2964 RS |
4211 | |
4212 | Qload_file_name = intern ("load-file-name"); | |
4213 | staticpro (&Qload_file_name); | |
11938f10 | 4214 | |
3f39f996 RS |
4215 | Qeval_buffer_list = intern ("eval-buffer-list"); |
4216 | staticpro (&Qeval_buffer_list); | |
4217 | ||
6bb6da3e AM |
4218 | Qfile_truename = intern ("file-truename"); |
4219 | staticpro (&Qfile_truename) ; | |
4220 | ||
4221 | Qdo_after_load_evaluation = intern ("do-after-load-evaluation"); | |
4222 | staticpro (&Qdo_after_load_evaluation) ; | |
4223 | ||
11938f10 | 4224 | staticpro (&dump_path); |
4ad679f9 EN |
4225 | |
4226 | staticpro (&read_objects); | |
4227 | read_objects = Qnil; | |
9e062b6c | 4228 | staticpro (&seen_list); |
f153db13 | 4229 | seen_list = Qnil; |
177c0ea7 | 4230 | |
7ee3bd7b GM |
4231 | Vloads_in_progress = Qnil; |
4232 | staticpro (&Vloads_in_progress); | |
078e7b4a | 4233 | } |
ab5796a9 MB |
4234 | |
4235 | /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d | |
4236 | (do not change this comment) */ |