Commit | Line | Data |
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078e7b4a | 1 | /* Lisp parsing and input streams. |
039c6cc3 | 2 | |
17e0445b | 3 | Copyright (C) 1985-1989, 1993-1995, 1997-2013 Free Software Foundation, Inc. |
078e7b4a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
078e7b4a | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
078e7b4a JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
078e7b4a JB |
19 | |
20 | ||
98280b76 | 21 | #include <config.h> |
406af475 | 22 | #include "sysstdio.h" |
078e7b4a JB |
23 | #include <sys/types.h> |
24 | #include <sys/stat.h> | |
25 | #include <sys/file.h> | |
2c1b5dbe | 26 | #include <errno.h> |
9660f5fc | 27 | #include <limits.h> /* For CHAR_BIT. */ |
39adff0d | 28 | #include <stat-time.h> |
078e7b4a | 29 | #include "lisp.h" |
95384e1e | 30 | #include "intervals.h" |
1571601b | 31 | #include "character.h" |
e5560ff7 | 32 | #include "buffer.h" |
fe0e03f3 | 33 | #include "charset.h" |
8792be66 | 34 | #include "coding.h" |
57bda87a | 35 | #include <epaths.h> |
078e7b4a | 36 | #include "commands.h" |
e37c0805 | 37 | #include "keyboard.h" |
428a555e | 38 | #include "frame.h" |
7bd279cd | 39 | #include "termhooks.h" |
66cd0949 | 40 | #include "blockinput.h" |
078e7b4a | 41 | |
79051982 | 42 | #ifdef MSDOS |
79051982 RS |
43 | #include "msdos.h" |
44 | #endif | |
45 | ||
9e059e3f GM |
46 | #ifdef HAVE_NS |
47 | #include "nsterm.h" | |
48 | #endif | |
49 | ||
c1a2f60a | 50 | #include <unistd.h> |
078e7b4a | 51 | |
c011e9a5 RS |
52 | #ifdef HAVE_SETLOCALE |
53 | #include <locale.h> | |
54 | #endif /* HAVE_SETLOCALE */ | |
55 | ||
bcdec28b | 56 | #include <fcntl.h> |
f7d279f0 | 57 | |
79cf851c | 58 | #ifdef HAVE_FSEEKO |
68c45bf0 PE |
59 | #define file_offset off_t |
60 | #define file_tell ftello | |
61 | #else | |
62 | #define file_offset long | |
63 | #define file_tell ftell | |
64 | #endif | |
65 | ||
48def666 | 66 | /* Hash table read constants. */ |
955cbe7b PE |
67 | static Lisp_Object Qhash_table, Qdata; |
68 | static Lisp_Object Qtest, Qsize; | |
69 | static Lisp_Object Qweakness; | |
70 | static Lisp_Object Qrehash_size; | |
71 | static Lisp_Object Qrehash_threshold; | |
72 | ||
73 | static Lisp_Object Qread_char, Qget_file_char, Qcurrent_load_list; | |
74 | Lisp_Object Qstandard_input; | |
29208e82 | 75 | Lisp_Object Qvariable_documentation; |
955cbe7b | 76 | static Lisp_Object Qascii_character, Qload, Qload_file_name; |
2b6cae0c | 77 | Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
955cbe7b PE |
78 | static Lisp_Object Qinhibit_file_name_operation; |
79 | static Lisp_Object Qeval_buffer_list; | |
8be3a09c | 80 | Lisp_Object Qlexical_binding; |
955cbe7b | 81 | static Lisp_Object Qfile_truename, Qdo_after_load_evaluation; /* ACM 2006/5/16 */ |
7bd279cd | 82 | |
8792be66 KH |
83 | /* Used instead of Qget_file_char while loading *.elc files compiled |
84 | by Emacs 21 or older. */ | |
85 | static Lisp_Object Qget_emacs_mule_file_char; | |
86 | ||
87 | static Lisp_Object Qload_force_doc_strings; | |
88 | ||
2baf5e76 | 89 | static Lisp_Object Qload_in_progress; |
ece435a5 | 90 | |
4ad679f9 EN |
91 | /* The association list of objects read with the #n=object form. |
92 | Each member of the list has the form (n . object), and is used to | |
93 | look up the object for the corresponding #n# construct. | |
94 | It must be set to nil before all top-level calls to read0. */ | |
1e3890d1 | 95 | static Lisp_Object read_objects; |
4ad679f9 | 96 | |
b2a30870 | 97 | /* File for get_file_char to read from. Use by load. */ |
078e7b4a JB |
98 | static FILE *instream; |
99 | ||
b2a30870 | 100 | /* For use within read-from-string (this reader is non-reentrant!!) */ |
d311d28c PE |
101 | static ptrdiff_t read_from_string_index; |
102 | static ptrdiff_t read_from_string_index_byte; | |
103 | static ptrdiff_t read_from_string_limit; | |
17634846 | 104 | |
abb13b09 | 105 | /* Number of characters read in the current call to Fread or |
48def666 | 106 | Fread_from_string. */ |
da43f021 | 107 | static EMACS_INT readchar_count; |
6f7f43d5 | 108 | |
c15cfd1f | 109 | /* This contains the last string skipped with #@. */ |
b2a30870 RS |
110 | static char *saved_doc_string; |
111 | /* Length of buffer allocated in saved_doc_string. */ | |
bfbbd7e7 | 112 | static ptrdiff_t saved_doc_string_size; |
b2a30870 | 113 | /* Length of actual data in saved_doc_string. */ |
bfbbd7e7 | 114 | static ptrdiff_t saved_doc_string_length; |
b2a30870 | 115 | /* This is the file position that string came from. */ |
68c45bf0 | 116 | static file_offset saved_doc_string_position; |
b2a30870 | 117 | |
c15cfd1f RS |
118 | /* This contains the previous string skipped with #@. |
119 | We copy it from saved_doc_string when a new string | |
120 | is put in saved_doc_string. */ | |
121 | static char *prev_saved_doc_string; | |
122 | /* Length of buffer allocated in prev_saved_doc_string. */ | |
bfbbd7e7 | 123 | static ptrdiff_t prev_saved_doc_string_size; |
c15cfd1f | 124 | /* Length of actual data in prev_saved_doc_string. */ |
bfbbd7e7 | 125 | static ptrdiff_t prev_saved_doc_string_length; |
c15cfd1f | 126 | /* This is the file position that string came from. */ |
68c45bf0 | 127 | static file_offset prev_saved_doc_string_position; |
c15cfd1f | 128 | |
7cded46f | 129 | /* True means inside a new-style backquote |
17634846 | 130 | with no surrounding parentheses. |
7cded46f | 131 | Fread initializes this to false, so we need not specbind it |
17634846 | 132 | or worry about what happens to it when there is an error. */ |
7cded46f | 133 | static bool new_backquote_flag; |
29208e82 | 134 | static Lisp_Object Qold_style_backquotes; |
7ee3bd7b GM |
135 | |
136 | /* A list of file names for files being loaded in Fload. Used to | |
137 | check for recursive loads. */ | |
138 | ||
9942fa0c | 139 | static Lisp_Object Vloads_in_progress; |
7ee3bd7b | 140 | |
f57e2426 J |
141 | static int read_emacs_mule_char (int, int (*) (int, Lisp_Object), |
142 | Lisp_Object); | |
8792be66 | 143 | |
7cded46f | 144 | static void readevalloop (Lisp_Object, FILE *, Lisp_Object, bool, |
f57e2426 J |
145 | Lisp_Object, Lisp_Object, |
146 | Lisp_Object, Lisp_Object); | |
078e7b4a | 147 | \f |
8792be66 KH |
148 | /* Functions that read one byte from the current source READCHARFUN |
149 | or unreads one byte. If the integer argument C is -1, it returns | |
150 | one read byte, or -1 when there's no more byte in the source. If C | |
151 | is 0 or positive, it unreads C, and the return value is not | |
152 | interesting. */ | |
153 | ||
f57e2426 J |
154 | static int readbyte_for_lambda (int, Lisp_Object); |
155 | static int readbyte_from_file (int, Lisp_Object); | |
156 | static int readbyte_from_string (int, Lisp_Object); | |
8792be66 | 157 | |
078e7b4a JB |
158 | /* Handle unreading and rereading of characters. |
159 | Write READCHAR to read a character, | |
fe0e03f3 KH |
160 | UNREAD(c) to unread c to be read again. |
161 | ||
8792be66 | 162 | These macros correctly read/unread multibyte characters. */ |
078e7b4a | 163 | |
1202434b | 164 | #define READCHAR readchar (readcharfun, NULL) |
078e7b4a JB |
165 | #define UNREAD(c) unreadchar (readcharfun, c) |
166 | ||
1202434b KH |
167 | /* Same as READCHAR but set *MULTIBYTE to the multibyteness of the source. */ |
168 | #define READCHAR_REPORT_MULTIBYTE(multibyte) readchar (readcharfun, multibyte) | |
169 | ||
8792be66 | 170 | /* When READCHARFUN is Qget_file_char, Qget_emacs_mule_file_char, |
8f924df7 KH |
171 | Qlambda, or a cons, we use this to keep an unread character because |
172 | a file stream can't handle multibyte-char unreading. The value -1 | |
48def666 | 173 | means that there's no unread character. */ |
8792be66 KH |
174 | static int unread_char; |
175 | ||
078e7b4a | 176 | static int |
fce31d69 | 177 | readchar (Lisp_Object readcharfun, bool *multibyte) |
078e7b4a JB |
178 | { |
179 | Lisp_Object tem; | |
95384e1e | 180 | register int c; |
f57e2426 | 181 | int (*readbyte) (int, Lisp_Object); |
8792be66 KH |
182 | unsigned char buf[MAX_MULTIBYTE_LENGTH]; |
183 | int i, len; | |
7cded46f | 184 | bool emacs_mule_encoding = 0; |
078e7b4a | 185 | |
1202434b KH |
186 | if (multibyte) |
187 | *multibyte = 0; | |
188 | ||
abb13b09 | 189 | readchar_count++; |
177c0ea7 | 190 | |
cfff016d | 191 | if (BUFFERP (readcharfun)) |
078e7b4a | 192 | { |
bed23cb2 | 193 | register struct buffer *inbuffer = XBUFFER (readcharfun); |
078e7b4a | 194 | |
d311d28c | 195 | ptrdiff_t pt_byte = BUF_PT_BYTE (inbuffer); |
00a9a935 | 196 | |
15acfe41 GM |
197 | if (! BUFFER_LIVE_P (inbuffer)) |
198 | return -1; | |
199 | ||
bed23cb2 RS |
200 | if (pt_byte >= BUF_ZV_BYTE (inbuffer)) |
201 | return -1; | |
078e7b4a | 202 | |
4b4deea2 | 203 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 204 | { |
00a9a935 | 205 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
206 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, pt_byte); |
207 | BUF_INC_POS (inbuffer, pt_byte); | |
62a6e103 | 208 | c = STRING_CHAR (p); |
1202434b KH |
209 | if (multibyte) |
210 | *multibyte = 1; | |
bed23cb2 RS |
211 | } |
212 | else | |
213 | { | |
214 | c = BUF_FETCH_BYTE (inbuffer, pt_byte); | |
8792be66 KH |
215 | if (! ASCII_BYTE_P (c)) |
216 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 217 | pt_byte++; |
6f7f43d5 | 218 | } |
bed23cb2 | 219 | SET_BUF_PT_BOTH (inbuffer, BUF_PT (inbuffer) + 1, pt_byte); |
6f7f43d5 | 220 | |
bed23cb2 | 221 | return c; |
078e7b4a | 222 | } |
cfff016d | 223 | if (MARKERP (readcharfun)) |
078e7b4a | 224 | { |
bed23cb2 | 225 | register struct buffer *inbuffer = XMARKER (readcharfun)->buffer; |
078e7b4a | 226 | |
d311d28c | 227 | ptrdiff_t bytepos = marker_byte_position (readcharfun); |
00a9a935 | 228 | |
bed23cb2 RS |
229 | if (bytepos >= BUF_ZV_BYTE (inbuffer)) |
230 | return -1; | |
6f7f43d5 | 231 | |
4b4deea2 | 232 | if (! NILP (BVAR (inbuffer, enable_multibyte_characters))) |
bed23cb2 | 233 | { |
00a9a935 | 234 | /* Fetch the character code from the buffer. */ |
bed23cb2 RS |
235 | unsigned char *p = BUF_BYTE_ADDRESS (inbuffer, bytepos); |
236 | BUF_INC_POS (inbuffer, bytepos); | |
62a6e103 | 237 | c = STRING_CHAR (p); |
1202434b KH |
238 | if (multibyte) |
239 | *multibyte = 1; | |
bed23cb2 RS |
240 | } |
241 | else | |
242 | { | |
243 | c = BUF_FETCH_BYTE (inbuffer, bytepos); | |
8792be66 KH |
244 | if (! ASCII_BYTE_P (c)) |
245 | c = BYTE8_TO_CHAR (c); | |
bed23cb2 | 246 | bytepos++; |
6f7f43d5 RS |
247 | } |
248 | ||
bed23cb2 RS |
249 | XMARKER (readcharfun)->bytepos = bytepos; |
250 | XMARKER (readcharfun)->charpos++; | |
251 | ||
252 | return c; | |
078e7b4a | 253 | } |
ad0153e4 RS |
254 | |
255 | if (EQ (readcharfun, Qlambda)) | |
8792be66 KH |
256 | { |
257 | readbyte = readbyte_for_lambda; | |
258 | goto read_multibyte; | |
259 | } | |
ad0153e4 | 260 | |
078e7b4a | 261 | if (EQ (readcharfun, Qget_file_char)) |
2c1b5dbe | 262 | { |
8792be66 KH |
263 | readbyte = readbyte_from_file; |
264 | goto read_multibyte; | |
2c1b5dbe | 265 | } |
078e7b4a | 266 | |
cfff016d | 267 | if (STRINGP (readcharfun)) |
078e7b4a | 268 | { |
bed23cb2 | 269 | if (read_from_string_index >= read_from_string_limit) |
078e7b4a | 270 | c = -1; |
1202434b KH |
271 | else if (STRING_MULTIBYTE (readcharfun)) |
272 | { | |
273 | if (multibyte) | |
274 | *multibyte = 1; | |
275 | FETCH_STRING_CHAR_ADVANCE_NO_CHECK (c, readcharfun, | |
276 | read_from_string_index, | |
277 | read_from_string_index_byte); | |
278 | } | |
f0354c03 | 279 | else |
1202434b KH |
280 | { |
281 | c = SREF (readcharfun, read_from_string_index_byte); | |
282 | read_from_string_index++; | |
283 | read_from_string_index_byte++; | |
284 | } | |
078e7b4a JB |
285 | return c; |
286 | } | |
287 | ||
8792be66 KH |
288 | if (CONSP (readcharfun)) |
289 | { | |
290 | /* This is the case that read_vector is reading from a unibyte | |
291 | string that contains a byte sequence previously skipped | |
292 | because of #@NUMBER. The car part of readcharfun is that | |
293 | string, and the cdr part is a value of readcharfun given to | |
294 | read_vector. */ | |
295 | readbyte = readbyte_from_string; | |
296 | if (EQ (XCDR (readcharfun), Qget_emacs_mule_file_char)) | |
297 | emacs_mule_encoding = 1; | |
298 | goto read_multibyte; | |
299 | } | |
8f924df7 | 300 | |
8792be66 KH |
301 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) |
302 | { | |
303 | readbyte = readbyte_from_file; | |
304 | emacs_mule_encoding = 1; | |
305 | goto read_multibyte; | |
306 | } | |
078e7b4a JB |
307 | |
308 | tem = call0 (readcharfun); | |
309 | ||
265a9e55 | 310 | if (NILP (tem)) |
078e7b4a JB |
311 | return -1; |
312 | return XINT (tem); | |
8792be66 KH |
313 | |
314 | read_multibyte: | |
315 | if (unread_char >= 0) | |
316 | { | |
317 | c = unread_char; | |
318 | unread_char = -1; | |
319 | return c; | |
320 | } | |
321 | c = (*readbyte) (-1, readcharfun); | |
75a65c7e | 322 | if (c < 0) |
1202434b KH |
323 | return c; |
324 | if (multibyte) | |
325 | *multibyte = 1; | |
326 | if (ASCII_BYTE_P (c)) | |
8792be66 KH |
327 | return c; |
328 | if (emacs_mule_encoding) | |
329 | return read_emacs_mule_char (c, readbyte, readcharfun); | |
330 | i = 0; | |
331 | buf[i++] = c; | |
332 | len = BYTES_BY_CHAR_HEAD (c); | |
333 | while (i < len) | |
334 | { | |
335 | c = (*readbyte) (-1, readcharfun); | |
336 | if (c < 0 || ! TRAILING_CODE_P (c)) | |
337 | { | |
338 | while (--i > 1) | |
339 | (*readbyte) (buf[i], readcharfun); | |
340 | return BYTE8_TO_CHAR (buf[0]); | |
341 | } | |
342 | buf[i++] = c; | |
343 | } | |
62a6e103 | 344 | return STRING_CHAR (buf); |
078e7b4a JB |
345 | } |
346 | ||
d2e24f92 SM |
347 | #define FROM_FILE_P(readcharfun) \ |
348 | (EQ (readcharfun, Qget_file_char) \ | |
349 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
350 | ||
75a65c7e SM |
351 | static void |
352 | skip_dyn_bytes (Lisp_Object readcharfun, ptrdiff_t n) | |
353 | { | |
d2e24f92 | 354 | if (FROM_FILE_P (readcharfun)) |
75a65c7e SM |
355 | { |
356 | block_input (); /* FIXME: Not sure if it's needed. */ | |
357 | fseek (instream, n, SEEK_CUR); | |
358 | unblock_input (); | |
359 | } | |
360 | else | |
361 | { /* We're not reading directly from a file. In that case, it's difficult | |
362 | to reliably count bytes, since these are usually meant for the file's | |
363 | encoding, whereas we're now typically in the internal encoding. | |
364 | But luckily, skip_dyn_bytes is used to skip over a single | |
365 | dynamic-docstring (or dynamic byte-code) which is always quoted such | |
366 | that \037 is the final char. */ | |
367 | int c; | |
368 | do { | |
369 | c = READCHAR; | |
370 | } while (c >= 0 && c != '\037'); | |
371 | } | |
372 | } | |
373 | ||
759fd763 SM |
374 | static void |
375 | skip_dyn_eof (Lisp_Object readcharfun) | |
376 | { | |
377 | if (FROM_FILE_P (readcharfun)) | |
378 | { | |
379 | block_input (); /* FIXME: Not sure if it's needed. */ | |
380 | fseek (instream, 0, SEEK_END); | |
381 | unblock_input (); | |
382 | } | |
383 | else | |
384 | while (READCHAR >= 0); | |
385 | } | |
386 | ||
078e7b4a JB |
387 | /* Unread the character C in the way appropriate for the stream READCHARFUN. |
388 | If the stream is a user function, call it with the char as argument. */ | |
389 | ||
390 | static void | |
971de7fb | 391 | unreadchar (Lisp_Object readcharfun, int c) |
078e7b4a | 392 | { |
abb13b09 | 393 | readchar_count--; |
92fddec9 KH |
394 | if (c == -1) |
395 | /* Don't back up the pointer if we're unreading the end-of-input mark, | |
396 | since readchar didn't advance it when we read it. */ | |
397 | ; | |
cfff016d | 398 | else if (BUFFERP (readcharfun)) |
d7760ca9 | 399 | { |
bed23cb2 | 400 | struct buffer *b = XBUFFER (readcharfun); |
d311d28c PE |
401 | ptrdiff_t charpos = BUF_PT (b); |
402 | ptrdiff_t bytepos = BUF_PT_BYTE (b); | |
d7760ca9 | 403 | |
4b4deea2 | 404 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 405 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 406 | else |
8792be66 | 407 | bytepos--; |
d7760ca9 | 408 | |
cffc6f3b | 409 | SET_BUF_PT_BOTH (b, charpos - 1, bytepos); |
d7760ca9 | 410 | } |
cfff016d | 411 | else if (MARKERP (readcharfun)) |
d7760ca9 | 412 | { |
bed23cb2 | 413 | struct buffer *b = XMARKER (readcharfun)->buffer; |
d311d28c | 414 | ptrdiff_t bytepos = XMARKER (readcharfun)->bytepos; |
d7760ca9 | 415 | |
8792be66 | 416 | XMARKER (readcharfun)->charpos--; |
4b4deea2 | 417 | if (! NILP (BVAR (b, enable_multibyte_characters))) |
8792be66 | 418 | BUF_DEC_POS (b, bytepos); |
bed23cb2 | 419 | else |
8792be66 | 420 | bytepos--; |
d7760ca9 | 421 | |
8792be66 | 422 | XMARKER (readcharfun)->bytepos = bytepos; |
d7760ca9 | 423 | } |
cfff016d | 424 | else if (STRINGP (readcharfun)) |
bed23cb2 RS |
425 | { |
426 | read_from_string_index--; | |
427 | read_from_string_index_byte | |
428 | = string_char_to_byte (readcharfun, read_from_string_index); | |
429 | } | |
8792be66 KH |
430 | else if (CONSP (readcharfun)) |
431 | { | |
432 | unread_char = c; | |
433 | } | |
ad0153e4 | 434 | else if (EQ (readcharfun, Qlambda)) |
8792be66 KH |
435 | { |
436 | unread_char = c; | |
437 | } | |
d2e24f92 | 438 | else if (FROM_FILE_P (readcharfun)) |
8792be66 | 439 | { |
75a65c7e | 440 | unread_char = c; |
8792be66 | 441 | } |
078e7b4a JB |
442 | else |
443 | call1 (readcharfun, make_number (c)); | |
444 | } | |
445 | ||
8792be66 | 446 | static int |
971de7fb | 447 | readbyte_for_lambda (int c, Lisp_Object readcharfun) |
8792be66 KH |
448 | { |
449 | return read_bytecode_char (c >= 0); | |
450 | } | |
451 | ||
452 | ||
453 | static int | |
971de7fb | 454 | readbyte_from_file (int c, Lisp_Object readcharfun) |
8792be66 KH |
455 | { |
456 | if (c >= 0) | |
457 | { | |
4d7e6e51 | 458 | block_input (); |
8792be66 | 459 | ungetc (c, instream); |
4d7e6e51 | 460 | unblock_input (); |
8792be66 KH |
461 | return 0; |
462 | } | |
463 | ||
4d7e6e51 | 464 | block_input (); |
8792be66 | 465 | c = getc (instream); |
d85d3839 | 466 | |
48def666 | 467 | /* Interrupted reads have been observed while reading over the network. */ |
d85d3839 MB |
468 | while (c == EOF && ferror (instream) && errno == EINTR) |
469 | { | |
4d7e6e51 | 470 | unblock_input (); |
d85d3839 | 471 | QUIT; |
4d7e6e51 | 472 | block_input (); |
57cb2e6f | 473 | clearerr (instream); |
d85d3839 | 474 | c = getc (instream); |
66cd0949 | 475 | } |
d85d3839 | 476 | |
4d7e6e51 | 477 | unblock_input (); |
57cb2e6f | 478 | |
8792be66 KH |
479 | return (c == EOF ? -1 : c); |
480 | } | |
481 | ||
482 | static int | |
971de7fb | 483 | readbyte_from_string (int c, Lisp_Object readcharfun) |
8792be66 KH |
484 | { |
485 | Lisp_Object string = XCAR (readcharfun); | |
486 | ||
487 | if (c >= 0) | |
488 | { | |
489 | read_from_string_index--; | |
490 | read_from_string_index_byte | |
491 | = string_char_to_byte (string, read_from_string_index); | |
492 | } | |
8f924df7 | 493 | |
8792be66 KH |
494 | if (read_from_string_index >= read_from_string_limit) |
495 | c = -1; | |
496 | else | |
497 | FETCH_STRING_CHAR_ADVANCE (c, string, | |
498 | read_from_string_index, | |
499 | read_from_string_index_byte); | |
500 | return c; | |
501 | } | |
502 | ||
503 | ||
504 | /* Read one non-ASCII character from INSTREAM. The character is | |
505 | encoded in `emacs-mule' and the first byte is already read in | |
506 | C. */ | |
507 | ||
8792be66 | 508 | static int |
971de7fb | 509 | read_emacs_mule_char (int c, int (*readbyte) (int, Lisp_Object), Lisp_Object readcharfun) |
8792be66 KH |
510 | { |
511 | /* Emacs-mule coding uses at most 4-byte for one character. */ | |
512 | unsigned char buf[4]; | |
513 | int len = emacs_mule_bytes[c]; | |
514 | struct charset *charset; | |
515 | int i; | |
516 | unsigned code; | |
517 | ||
518 | if (len == 1) | |
519 | /* C is not a valid leading-code of `emacs-mule'. */ | |
520 | return BYTE8_TO_CHAR (c); | |
521 | ||
522 | i = 0; | |
523 | buf[i++] = c; | |
524 | while (i < len) | |
525 | { | |
526 | c = (*readbyte) (-1, readcharfun); | |
527 | if (c < 0xA0) | |
528 | { | |
529 | while (--i > 1) | |
530 | (*readbyte) (buf[i], readcharfun); | |
531 | return BYTE8_TO_CHAR (buf[0]); | |
532 | } | |
533 | buf[i++] = c; | |
534 | } | |
535 | ||
536 | if (len == 2) | |
537 | { | |
b84ae584 | 538 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
539 | code = buf[1] & 0x7F; |
540 | } | |
541 | else if (len == 3) | |
542 | { | |
543 | if (buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
544 | || buf[0] == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
545 | { | |
b84ae584 | 546 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8792be66 KH |
547 | code = buf[2] & 0x7F; |
548 | } | |
549 | else | |
550 | { | |
b84ae584 | 551 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[0]]); |
8792be66 KH |
552 | code = ((buf[1] << 8) | buf[2]) & 0x7F7F; |
553 | } | |
554 | } | |
555 | else | |
556 | { | |
b84ae584 | 557 | charset = CHARSET_FROM_ID (emacs_mule_charset[buf[1]]); |
8f924df7 | 558 | code = ((buf[2] << 8) | buf[3]) & 0x7F7F; |
8792be66 KH |
559 | } |
560 | c = DECODE_CHAR (charset, code); | |
561 | if (c < 0) | |
562 | Fsignal (Qinvalid_read_syntax, | |
6c6f1994 | 563 | list1 (build_string ("invalid multibyte form"))); |
8792be66 KH |
564 | return c; |
565 | } | |
566 | ||
567 | ||
f57e2426 J |
568 | static Lisp_Object read_internal_start (Lisp_Object, Lisp_Object, |
569 | Lisp_Object); | |
570 | static Lisp_Object read0 (Lisp_Object); | |
7cded46f | 571 | static Lisp_Object read1 (Lisp_Object, int *, bool); |
abb13b09 | 572 | |
7cded46f PE |
573 | static Lisp_Object read_list (bool, Lisp_Object); |
574 | static Lisp_Object read_vector (Lisp_Object, bool); | |
abb13b09 | 575 | |
f57e2426 J |
576 | static Lisp_Object substitute_object_recurse (Lisp_Object, Lisp_Object, |
577 | Lisp_Object); | |
578 | static void substitute_object_in_subtree (Lisp_Object, | |
579 | Lisp_Object); | |
580 | static void substitute_in_interval (INTERVAL, Lisp_Object); | |
9e062b6c | 581 | |
078e7b4a | 582 | \f |
bed23cb2 | 583 | /* Get a character from the tty. */ |
078e7b4a | 584 | |
f42be754 JB |
585 | /* Read input events until we get one that's acceptable for our purposes. |
586 | ||
7cded46f | 587 | If NO_SWITCH_FRAME, switch-frame events are stashed |
f42be754 JB |
588 | until we get a character we like, and then stuffed into |
589 | unread_switch_frame. | |
590 | ||
7cded46f | 591 | If ASCII_REQUIRED, check function key events to see |
f42be754 JB |
592 | if the unmodified version of the symbol has a Qascii_character |
593 | property, and use that character, if present. | |
594 | ||
7cded46f PE |
595 | If ERROR_NONASCII, signal an error if the input we |
596 | get isn't an ASCII character with modifiers. If it's false but | |
597 | ASCII_REQUIRED is true, just re-read until we get an ASCII | |
bb49a192 RS |
598 | character. |
599 | ||
7cded46f | 600 | If INPUT_METHOD, invoke the current input method |
50e48299 CY |
601 | if the character warrants that. |
602 | ||
7cded46f | 603 | If SECONDS is a number, wait that many seconds for input, and |
50e48299 | 604 | return Qnil if no input arrives within that time. */ |
cc39bc38 | 605 | |
2f7c71a1 | 606 | static Lisp_Object |
7cded46f PE |
607 | read_filtered_event (bool no_switch_frame, bool ascii_required, |
608 | bool error_nonascii, bool input_method, Lisp_Object seconds) | |
f42be754 | 609 | { |
4332cf50 | 610 | Lisp_Object val, delayed_switch_frame; |
43aac990 | 611 | struct timespec end_time; |
153a17b7 | 612 | |
5dbf89bc | 613 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
614 | if (display_hourglass_p) |
615 | cancel_hourglass (); | |
5dbf89bc | 616 | #endif |
177c0ea7 | 617 | |
153a17b7 | 618 | delayed_switch_frame = Qnil; |
f42be754 | 619 | |
50e48299 CY |
620 | /* Compute timeout. */ |
621 | if (NUMBERP (seconds)) | |
622 | { | |
51d8b30e | 623 | double duration = extract_float (seconds); |
43aac990 PE |
624 | struct timespec wait_time = dtotimespec (duration); |
625 | end_time = timespec_add (current_timespec (), wait_time); | |
50e48299 CY |
626 | } |
627 | ||
99d0d6dc | 628 | /* Read until we get an acceptable event. */ |
f42be754 | 629 | retry: |
88852d45 | 630 | do |
99d0d6dc | 631 | val = read_char (0, Qnil, (input_method ? Qnil : Qt), 0, |
251bc578 | 632 | NUMBERP (seconds) ? &end_time : NULL); |
9688ff53 | 633 | while (INTEGERP (val) && XINT (val) == -2); /* wrong_kboard_jmpbuf */ |
f42be754 | 634 | |
cfff016d | 635 | if (BUFFERP (val)) |
6c82d689 KH |
636 | goto retry; |
637 | ||
99d0d6dc | 638 | /* `switch-frame' events are put off until after the next ASCII |
8e6208c5 | 639 | character. This is better than signaling an error just because |
f42be754 JB |
640 | the last characters were typed to a separate minibuffer frame, |
641 | for example. Eventually, some code which can deal with | |
642 | switch-frame events will read it and process it. */ | |
643 | if (no_switch_frame | |
644 | && EVENT_HAS_PARAMETERS (val) | |
ca77ee45 | 645 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (val)), Qswitch_frame)) |
f42be754 JB |
646 | { |
647 | delayed_switch_frame = val; | |
648 | goto retry; | |
649 | } | |
650 | ||
50e48299 | 651 | if (ascii_required && !(NUMBERP (seconds) && NILP (val))) |
f42be754 JB |
652 | { |
653 | /* Convert certain symbols to their ASCII equivalents. */ | |
cfff016d | 654 | if (SYMBOLP (val)) |
f42be754 | 655 | { |
95384e1e | 656 | Lisp_Object tem, tem1; |
f42be754 JB |
657 | tem = Fget (val, Qevent_symbol_element_mask); |
658 | if (!NILP (tem)) | |
659 | { | |
660 | tem1 = Fget (Fcar (tem), Qascii_character); | |
661 | /* Merge this symbol's modifier bits | |
662 | with the ASCII equivalent of its basic code. */ | |
663 | if (!NILP (tem1)) | |
baf69866 | 664 | XSETFASTINT (val, XINT (tem1) | XINT (Fcar (Fcdr (tem)))); |
f42be754 JB |
665 | } |
666 | } | |
177c0ea7 | 667 | |
f42be754 | 668 | /* If we don't have a character now, deal with it appropriately. */ |
cfff016d | 669 | if (!INTEGERP (val)) |
f42be754 JB |
670 | { |
671 | if (error_nonascii) | |
672 | { | |
6c6f1994 | 673 | Vunread_command_events = list1 (val); |
f42be754 JB |
674 | error ("Non-character input-event"); |
675 | } | |
676 | else | |
677 | goto retry; | |
678 | } | |
679 | } | |
680 | ||
681 | if (! NILP (delayed_switch_frame)) | |
682 | unread_switch_frame = delayed_switch_frame; | |
683 | ||
67868d27 PJ |
684 | #if 0 |
685 | ||
5dbf89bc | 686 | #ifdef HAVE_WINDOW_SYSTEM |
df6c90d8 GM |
687 | if (display_hourglass_p) |
688 | start_hourglass (); | |
5dbf89bc | 689 | #endif |
67868d27 PJ |
690 | |
691 | #endif | |
692 | ||
f42be754 | 693 | return val; |
f42be754 JB |
694 | } |
695 | ||
a7ca3326 | 696 | DEFUN ("read-char", Fread_char, Sread_char, 0, 3, 0, |
5de38842 PJ |
697 | doc: /* Read a character from the command input (keyboard or macro). |
698 | It is returned as a number. | |
fb26c2af KH |
699 | If the character has modifiers, they are resolved and reflected to the |
700 | character code if possible (e.g. C-SPC -> 0). | |
701 | ||
5de38842 PJ |
702 | If the user generates an event which is not a character (i.e. a mouse |
703 | click or function key event), `read-char' signals an error. As an | |
fb26c2af KH |
704 | exception, switch-frame events are put off until non-character events |
705 | can be read. | |
5de38842 PJ |
706 | If you want to read non-character events, or ignore them, call |
707 | `read-event' or `read-char-exclusive' instead. | |
708 | ||
709 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
710 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
711 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
712 | is used for reading a character. |
713 | If the optional argument SECONDS is non-nil, it should be a number | |
714 | specifying the maximum number of seconds to wait for input. If no | |
715 | input arrives in that time, return nil. SECONDS may be a | |
716 | floating-point value. */) | |
5842a27b | 717 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 718 | { |
fb26c2af | 719 | Lisp_Object val; |
fb26c2af | 720 | |
bb49a192 RS |
721 | if (! NILP (prompt)) |
722 | message_with_string ("%s", prompt, 0); | |
fb26c2af | 723 | val = read_filtered_event (1, 1, 1, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
724 | |
725 | return (NILP (val) ? Qnil | |
726 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a JB |
727 | } |
728 | ||
a7ca3326 | 729 | DEFUN ("read-event", Fread_event, Sread_event, 0, 3, 0, |
5de38842 PJ |
730 | doc: /* Read an event object from the input stream. |
731 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
732 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
733 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
734 | is used for reading a character. |
735 | If the optional argument SECONDS is non-nil, it should be a number | |
736 | specifying the maximum number of seconds to wait for input. If no | |
737 | input arrives in that time, return nil. SECONDS may be a | |
738 | floating-point value. */) | |
5842a27b | 739 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 740 | { |
bb49a192 RS |
741 | if (! NILP (prompt)) |
742 | message_with_string ("%s", prompt, 0); | |
50e48299 | 743 | return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method), seconds); |
078e7b4a JB |
744 | } |
745 | ||
50e48299 | 746 | DEFUN ("read-char-exclusive", Fread_char_exclusive, Sread_char_exclusive, 0, 3, 0, |
5de38842 PJ |
747 | doc: /* Read a character from the command input (keyboard or macro). |
748 | It is returned as a number. Non-character events are ignored. | |
fb26c2af KH |
749 | If the character has modifiers, they are resolved and reflected to the |
750 | character code if possible (e.g. C-SPC -> 0). | |
5de38842 PJ |
751 | |
752 | If the optional argument PROMPT is non-nil, display that as a prompt. | |
753 | If the optional argument INHERIT-INPUT-METHOD is non-nil and some | |
754 | input method is turned on in the current buffer, that input method | |
50e48299 CY |
755 | is used for reading a character. |
756 | If the optional argument SECONDS is non-nil, it should be a number | |
757 | specifying the maximum number of seconds to wait for input. If no | |
758 | input arrives in that time, return nil. SECONDS may be a | |
759 | floating-point value. */) | |
5842a27b | 760 | (Lisp_Object prompt, Lisp_Object inherit_input_method, Lisp_Object seconds) |
078e7b4a | 761 | { |
fb26c2af | 762 | Lisp_Object val; |
fb26c2af | 763 | |
bb49a192 RS |
764 | if (! NILP (prompt)) |
765 | message_with_string ("%s", prompt, 0); | |
66c410ce | 766 | |
fb26c2af | 767 | val = read_filtered_event (1, 1, 0, ! NILP (inherit_input_method), seconds); |
66c410ce CY |
768 | |
769 | return (NILP (val) ? Qnil | |
770 | : make_number (char_resolve_modifier_mask (XINT (val)))); | |
078e7b4a | 771 | } |
078e7b4a JB |
772 | |
773 | DEFUN ("get-file-char", Fget_file_char, Sget_file_char, 0, 0, 0, | |
5de38842 | 774 | doc: /* Don't use this yourself. */) |
5842a27b | 775 | (void) |
078e7b4a JB |
776 | { |
777 | register Lisp_Object val; | |
4d7e6e51 | 778 | block_input (); |
1805de4f | 779 | XSETINT (val, getc (instream)); |
4d7e6e51 | 780 | unblock_input (); |
078e7b4a JB |
781 | return val; |
782 | } | |
da84f340 GM |
783 | |
784 | ||
550a625e | 785 | \f |
b9598260 SM |
786 | |
787 | /* Return true if the lisp code read using READCHARFUN defines a non-nil | |
788 | `lexical-binding' file variable. After returning, the stream is | |
757140ff GM |
789 | positioned following the first line, if it is a comment or #! line, |
790 | otherwise nothing is read. */ | |
b9598260 | 791 | |
7cded46f | 792 | static bool |
c566235d | 793 | lisp_file_lexically_bound_p (Lisp_Object readcharfun) |
b9598260 SM |
794 | { |
795 | int ch = READCHAR; | |
757140ff GM |
796 | |
797 | if (ch == '#') | |
798 | { | |
799 | ch = READCHAR; | |
800 | if (ch != '!') | |
801 | { | |
802 | UNREAD (ch); | |
803 | UNREAD ('#'); | |
804 | return 0; | |
805 | } | |
806 | while (ch != '\n' && ch != EOF) | |
807 | ch = READCHAR; | |
808 | if (ch == '\n') ch = READCHAR; | |
d2dd3694 GM |
809 | /* It is OK to leave the position after a #! line, since |
810 | that is what read1 does. */ | |
757140ff GM |
811 | } |
812 | ||
b9598260 SM |
813 | if (ch != ';') |
814 | /* The first line isn't a comment, just give up. */ | |
815 | { | |
816 | UNREAD (ch); | |
817 | return 0; | |
818 | } | |
819 | else | |
820 | /* Look for an appropriate file-variable in the first line. */ | |
821 | { | |
7cded46f | 822 | bool rv = 0; |
b9598260 | 823 | enum { |
29abe551 | 824 | NOMINAL, AFTER_FIRST_DASH, AFTER_ASTERIX |
b9598260 | 825 | } beg_end_state = NOMINAL; |
7cded46f | 826 | bool in_file_vars = 0; |
b9598260 | 827 | |
7200d79c SM |
828 | #define UPDATE_BEG_END_STATE(ch) \ |
829 | if (beg_end_state == NOMINAL) \ | |
830 | beg_end_state = (ch == '-' ? AFTER_FIRST_DASH : NOMINAL); \ | |
831 | else if (beg_end_state == AFTER_FIRST_DASH) \ | |
832 | beg_end_state = (ch == '*' ? AFTER_ASTERIX : NOMINAL); \ | |
833 | else if (beg_end_state == AFTER_ASTERIX) \ | |
834 | { \ | |
835 | if (ch == '-') \ | |
836 | in_file_vars = !in_file_vars; \ | |
837 | beg_end_state = NOMINAL; \ | |
b9598260 SM |
838 | } |
839 | ||
840 | /* Skip until we get to the file vars, if any. */ | |
841 | do | |
842 | { | |
843 | ch = READCHAR; | |
844 | UPDATE_BEG_END_STATE (ch); | |
845 | } | |
846 | while (!in_file_vars && ch != '\n' && ch != EOF); | |
847 | ||
848 | while (in_file_vars) | |
849 | { | |
06a0259a | 850 | char var[100], val[100]; |
3c346cc3 | 851 | unsigned i; |
b9598260 SM |
852 | |
853 | ch = READCHAR; | |
854 | ||
855 | /* Read a variable name. */ | |
856 | while (ch == ' ' || ch == '\t') | |
857 | ch = READCHAR; | |
858 | ||
06a0259a | 859 | i = 0; |
db7a0b4f | 860 | while (ch != ':' && ch != '\n' && ch != EOF && in_file_vars) |
b9598260 | 861 | { |
06a0259a PE |
862 | if (i < sizeof var - 1) |
863 | var[i++] = ch; | |
b9598260 SM |
864 | UPDATE_BEG_END_STATE (ch); |
865 | ch = READCHAR; | |
866 | } | |
7200d79c | 867 | |
db7a0b4f | 868 | /* Stop scanning if no colon was found before end marker. */ |
ad3a2b41 | 869 | if (!in_file_vars || ch == '\n' || ch == EOF) |
db7a0b4f AS |
870 | break; |
871 | ||
06a0259a PE |
872 | while (i > 0 && (var[i - 1] == ' ' || var[i - 1] == '\t')) |
873 | i--; | |
874 | var[i] = '\0'; | |
b9598260 SM |
875 | |
876 | if (ch == ':') | |
877 | { | |
878 | /* Read a variable value. */ | |
879 | ch = READCHAR; | |
880 | ||
881 | while (ch == ' ' || ch == '\t') | |
882 | ch = READCHAR; | |
883 | ||
06a0259a | 884 | i = 0; |
b9598260 SM |
885 | while (ch != ';' && ch != '\n' && ch != EOF && in_file_vars) |
886 | { | |
06a0259a PE |
887 | if (i < sizeof val - 1) |
888 | val[i++] = ch; | |
b9598260 SM |
889 | UPDATE_BEG_END_STATE (ch); |
890 | ch = READCHAR; | |
891 | } | |
892 | if (! in_file_vars) | |
ad3a2b41 | 893 | /* The value was terminated by an end-marker, which remove. */ |
06a0259a PE |
894 | i -= 3; |
895 | while (i > 0 && (val[i - 1] == ' ' || val[i - 1] == '\t')) | |
896 | i--; | |
897 | val[i] = '\0'; | |
b9598260 SM |
898 | |
899 | if (strcmp (var, "lexical-binding") == 0) | |
900 | /* This is it... */ | |
901 | { | |
902 | rv = (strcmp (val, "nil") != 0); | |
903 | break; | |
904 | } | |
905 | } | |
906 | } | |
907 | ||
908 | while (ch != '\n' && ch != EOF) | |
909 | ch = READCHAR; | |
910 | ||
911 | return rv; | |
912 | } | |
913 | } | |
b9598260 | 914 | \f |
8792be66 | 915 | /* Value is a version number of byte compiled code if the file |
c73bd236 | 916 | associated with file descriptor FD is a compiled Lisp file that's |
8792be66 KH |
917 | safe to load. Only files compiled with Emacs are safe to load. |
918 | Files compiled with XEmacs can lead to a crash in Fbyte_code | |
919 | because of an incompatible change in the byte compiler. */ | |
da84f340 GM |
920 | |
921 | static int | |
7cded46f | 922 | safe_to_load_version (int fd) |
da84f340 GM |
923 | { |
924 | char buf[512]; | |
925 | int nbytes, i; | |
8f924df7 | 926 | int version = 1; |
da84f340 GM |
927 | |
928 | /* Read the first few bytes from the file, and look for a line | |
929 | specifying the byte compiler version used. */ | |
7cded46f | 930 | nbytes = emacs_read (fd, buf, sizeof buf); |
da84f340 GM |
931 | if (nbytes > 0) |
932 | { | |
da84f340 | 933 | /* Skip to the next newline, skipping over the initial `ELC' |
1da3b9e4 | 934 | with NUL bytes following it, but note the version. */ |
da84f340 | 935 | for (i = 0; i < nbytes && buf[i] != '\n'; ++i) |
1da3b9e4 | 936 | if (i == 4) |
8792be66 | 937 | version = buf[i]; |
da84f340 | 938 | |
e6eb4e9e | 939 | if (i >= nbytes |
927f12da | 940 | || fast_c_string_match_ignore_case (Vbytecomp_version_regexp, |
d923b542 | 941 | buf + i, nbytes - i) < 0) |
7cded46f | 942 | version = 0; |
da84f340 GM |
943 | } |
944 | ||
945 | lseek (fd, 0, SEEK_SET); | |
7cded46f | 946 | return version; |
da84f340 GM |
947 | } |
948 | ||
949 | ||
7ee3bd7b GM |
950 | /* Callback for record_unwind_protect. Restore the old load list OLD, |
951 | after loading a file successfully. */ | |
952 | ||
27e498e6 | 953 | static void |
971de7fb | 954 | record_load_unwind (Lisp_Object old) |
7ee3bd7b | 955 | { |
27e498e6 | 956 | Vloads_in_progress = old; |
7ee3bd7b GM |
957 | } |
958 | ||
164c8bfe RS |
959 | /* This handler function is used via internal_condition_case_1. */ |
960 | ||
961 | static Lisp_Object | |
971de7fb | 962 | load_error_handler (Lisp_Object data) |
164c8bfe RS |
963 | { |
964 | return Qnil; | |
965 | } | |
7ee3bd7b | 966 | |
27e498e6 | 967 | static void |
971de7fb | 968 | load_warn_old_style_backquotes (Lisp_Object file) |
1d064697 SM |
969 | { |
970 | if (!NILP (Vold_style_backquotes)) | |
971 | { | |
b636b4c1 | 972 | Lisp_Object args[2]; |
18a4a65e | 973 | args[0] = build_string ("Loading `%s': old-style backquotes detected!"); |
1d064697 SM |
974 | args[1] = file; |
975 | Fmessage (2, args); | |
976 | } | |
1d064697 SM |
977 | } |
978 | ||
a7ca3326 | 979 | DEFUN ("get-load-suffixes", Fget_load_suffixes, Sget_load_suffixes, 0, 0, 0, |
971a4293 LT |
980 | doc: /* Return the suffixes that `load' should try if a suffix is \ |
981 | required. | |
982 | This uses the variables `load-suffixes' and `load-file-rep-suffixes'. */) | |
5842a27b | 983 | (void) |
971a4293 LT |
984 | { |
985 | Lisp_Object lst = Qnil, suffixes = Vload_suffixes, suffix, ext; | |
986 | while (CONSP (suffixes)) | |
987 | { | |
988 | Lisp_Object exts = Vload_file_rep_suffixes; | |
989 | suffix = XCAR (suffixes); | |
990 | suffixes = XCDR (suffixes); | |
991 | while (CONSP (exts)) | |
992 | { | |
993 | ext = XCAR (exts); | |
994 | exts = XCDR (exts); | |
995 | lst = Fcons (concat2 (suffix, ext), lst); | |
996 | } | |
997 | } | |
998 | return Fnreverse (lst); | |
999 | } | |
1000 | ||
a7ca3326 | 1001 | DEFUN ("load", Fload, Sload, 1, 5, 0, |
5de38842 PJ |
1002 | doc: /* Execute a file of Lisp code named FILE. |
1003 | First try FILE with `.elc' appended, then try with `.el', | |
971a4293 | 1004 | then try FILE unmodified (the exact suffixes in the exact order are |
88852d45 | 1005 | determined by `load-suffixes'). Environment variable references in |
971a4293 | 1006 | FILE are replaced with their values by calling `substitute-in-file-name'. |
5de38842 | 1007 | This function searches the directories in `load-path'. |
971a4293 | 1008 | |
5de38842 | 1009 | If optional second arg NOERROR is non-nil, |
971a4293 | 1010 | report no error if FILE doesn't exist. |
5de38842 | 1011 | Print messages at start and end of loading unless |
beb0b7f9 EZ |
1012 | optional third arg NOMESSAGE is non-nil (but `force-load-messages' |
1013 | overrides that). | |
5de38842 | 1014 | If optional fourth arg NOSUFFIX is non-nil, don't try adding |
971a4293 | 1015 | suffixes `.elc' or `.el' to the specified name FILE. |
5de38842 | 1016 | If optional fifth arg MUST-SUFFIX is non-nil, insist on |
971a4293 LT |
1017 | the suffix `.elc' or `.el'; don't accept just FILE unless |
1018 | it ends in one of those suffixes or includes a directory name. | |
1019 | ||
c664f463 CY |
1020 | If NOSUFFIX is nil, then if a file could not be found, try looking for |
1021 | a different representation of the file by adding non-empty suffixes to | |
1022 | its name, before trying another file. Emacs uses this feature to find | |
1023 | compressed versions of files when Auto Compression mode is enabled. | |
1024 | If NOSUFFIX is non-nil, disable this feature. | |
1025 | ||
1026 | The suffixes that this function tries out, when NOSUFFIX is nil, are | |
1027 | given by the return value of `get-load-suffixes' and the values listed | |
1028 | in `load-file-rep-suffixes'. If MUST-SUFFIX is non-nil, only the | |
1029 | return value of `get-load-suffixes' is used, i.e. the file name is | |
1030 | required to have a non-empty suffix. | |
0fc213e9 RS |
1031 | |
1032 | Loading a file records its definitions, and its `provide' and | |
1033 | `require' calls, in an element of `load-history' whose | |
1034 | car is the file name loaded. See `load-history'. | |
1035 | ||
c7926fe2 EZ |
1036 | While the file is in the process of being loaded, the variable |
1037 | `load-in-progress' is non-nil and the variable `load-file-name' | |
1038 | is bound to the file's name. | |
1039 | ||
971a4293 | 1040 | Return t if the file exists and loads successfully. */) |
a0931322 PE |
1041 | (Lisp_Object file, Lisp_Object noerror, Lisp_Object nomessage, |
1042 | Lisp_Object nosuffix, Lisp_Object must_suffix) | |
078e7b4a | 1043 | { |
a0931322 PE |
1044 | FILE *stream; |
1045 | int fd; | |
b2a069c2 | 1046 | int fd_index; |
d311d28c | 1047 | ptrdiff_t count = SPECPDL_INDEX (); |
6bb6da3e AM |
1048 | struct gcpro gcpro1, gcpro2, gcpro3; |
1049 | Lisp_Object found, efound, hist_file_name; | |
7cded46f PE |
1050 | /* True means we printed the ".el is newer" message. */ |
1051 | bool newer = 0; | |
1052 | /* True means we are loading a compiled file. */ | |
1053 | bool compiled = 0; | |
c2225d00 | 1054 | Lisp_Object handler; |
7cded46f | 1055 | bool safe_p = 1; |
8ea90aa3 | 1056 | const char *fmode = "r"; |
8792be66 KH |
1057 | int version; |
1058 | ||
317073d5 | 1059 | #ifdef DOS_NT |
229ba775 | 1060 | fmode = "rt"; |
317073d5 | 1061 | #endif /* DOS_NT */ |
078e7b4a | 1062 | |
b7826503 | 1063 | CHECK_STRING (file); |
078e7b4a | 1064 | |
c2225d00 | 1065 | /* If file name is magic, call the handler. */ |
e61b9b87 SM |
1066 | /* This shouldn't be necessary any more now that `openp' handles it right. |
1067 | handler = Ffind_file_name_handler (file, Qload); | |
1068 | if (!NILP (handler)) | |
1069 | return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */ | |
c2225d00 | 1070 | |
07a0bda3 RS |
1071 | /* Do this after the handler to avoid |
1072 | the need to gcpro noerror, nomessage and nosuffix. | |
e61b9b87 SM |
1073 | (Below here, we care only whether they are nil or not.) |
1074 | The presence of this call is the result of a historical accident: | |
6bb6da3e | 1075 | it used to be in every file-operation and when it got removed |
e61b9b87 SM |
1076 | everywhere, it accidentally stayed here. Since then, enough people |
1077 | supposedly have things like (load "$PROJECT/foo.el") in their .emacs | |
1078 | that it seemed risky to remove. */ | |
164c8bfe RS |
1079 | if (! NILP (noerror)) |
1080 | { | |
1081 | file = internal_condition_case_1 (Fsubstitute_in_file_name, file, | |
1082 | Qt, load_error_handler); | |
1083 | if (NILP (file)) | |
1084 | return Qnil; | |
1085 | } | |
1086 | else | |
1087 | file = Fsubstitute_in_file_name (file); | |
177c0ea7 | 1088 | |
078e7b4a | 1089 | /* Avoid weird lossage with null string as arg, |
48def666 | 1090 | since it would try to load a directory as a Lisp file. */ |
a0931322 | 1091 | if (SCHARS (file) == 0) |
078e7b4a | 1092 | { |
a0931322 PE |
1093 | fd = -1; |
1094 | errno = ENOENT; | |
1095 | } | |
1096 | else | |
1097 | { | |
1098 | Lisp_Object suffixes; | |
0fc213e9 RS |
1099 | found = Qnil; |
1100 | GCPRO2 (file, found); | |
211f7dcd RS |
1101 | |
1102 | if (! NILP (must_suffix)) | |
1103 | { | |
1104 | /* Don't insist on adding a suffix if FILE already ends with one. */ | |
a0931322 | 1105 | ptrdiff_t size = SBYTES (file); |
211f7dcd | 1106 | if (size > 3 |
42a5b22f | 1107 | && !strcmp (SSDATA (file) + size - 3, ".el")) |
211f7dcd RS |
1108 | must_suffix = Qnil; |
1109 | else if (size > 4 | |
42a5b22f | 1110 | && !strcmp (SSDATA (file) + size - 4, ".elc")) |
211f7dcd RS |
1111 | must_suffix = Qnil; |
1112 | /* Don't insist on adding a suffix | |
1113 | if the argument includes a directory name. */ | |
1114 | else if (! NILP (Ffile_name_directory (file))) | |
1115 | must_suffix = Qnil; | |
1116 | } | |
1117 | ||
a0931322 PE |
1118 | if (!NILP (nosuffix)) |
1119 | suffixes = Qnil; | |
1120 | else | |
1121 | { | |
1122 | suffixes = Fget_load_suffixes (); | |
1123 | if (NILP (must_suffix)) | |
1124 | { | |
1125 | Lisp_Object arg[2]; | |
1126 | arg[0] = suffixes; | |
1127 | arg[1] = Vload_file_rep_suffixes; | |
1128 | suffixes = Fappend (2, arg); | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | fd = openp (Vload_path, file, suffixes, &found, Qnil); | |
5a6e5452 | 1133 | UNGCPRO; |
078e7b4a JB |
1134 | } |
1135 | ||
96dc0f4e | 1136 | if (fd == -1) |
078e7b4a | 1137 | { |
265a9e55 | 1138 | if (NILP (noerror)) |
a0931322 | 1139 | report_file_error ("Cannot open load file", file); |
336d4a9c | 1140 | return Qnil; |
078e7b4a JB |
1141 | } |
1142 | ||
ba0d1195 | 1143 | /* Tell startup.el whether or not we found the user's init file. */ |
4116ab9f KH |
1144 | if (EQ (Qt, Vuser_init_file)) |
1145 | Vuser_init_file = found; | |
1146 | ||
96dc0f4e MB |
1147 | /* If FD is -2, that means openp found a magic file. */ |
1148 | if (fd == -2) | |
74549846 | 1149 | { |
5e24a1f7 KH |
1150 | if (NILP (Fequal (found, file))) |
1151 | /* If FOUND is a different file name from FILE, | |
1152 | find its handler even if we have already inhibited | |
1153 | the `load' operation on FILE. */ | |
1154 | handler = Ffind_file_name_handler (found, Qt); | |
1155 | else | |
1156 | handler = Ffind_file_name_handler (found, Qload); | |
1157 | if (! NILP (handler)) | |
1158 | return call5 (handler, Qload, found, noerror, nomessage, Qt); | |
35774242 EZ |
1159 | #ifdef DOS_NT |
1160 | /* Tramp has to deal with semi-broken packages that prepend | |
1161 | drive letters to remote files. For that reason, Tramp | |
1162 | catches file operations that test for file existence, which | |
1163 | makes openp think X:/foo.elc files are remote. However, | |
1164 | Tramp does not catch `load' operations for such files, so we | |
1165 | end up with a nil as the `load' handler above. If we would | |
1166 | continue with fd = -2, we will behave wrongly, and in | |
1167 | particular try reading a .elc file in the "rt" mode instead | |
1168 | of "rb". See bug #9311 for the results. To work around | |
1169 | this, we try to open the file locally, and go with that if it | |
1170 | succeeds. */ | |
1171 | fd = emacs_open (SSDATA (ENCODE_FILE (found)), O_RDONLY, 0); | |
1172 | if (fd == -1) | |
1173 | fd = -2; | |
1174 | #endif | |
74549846 RS |
1175 | } |
1176 | ||
b2a069c2 PE |
1177 | if (fd < 0) |
1178 | { | |
1179 | /* Pacify older GCC with --enable-gcc-warnings. */ | |
1180 | IF_LINT (fd_index = 0); | |
1181 | } | |
1182 | else | |
a0931322 PE |
1183 | { |
1184 | fd_index = SPECPDL_INDEX (); | |
1185 | record_unwind_protect_int (close_file_unwind, fd); | |
1186 | } | |
1187 | ||
550a625e GM |
1188 | /* Check if we're stuck in a recursive load cycle. |
1189 | ||
1190 | 2000-09-21: It's not possible to just check for the file loaded | |
1191 | being a member of Vloads_in_progress. This fails because of the | |
1192 | way the byte compiler currently works; `provide's are not | |
9d438325 | 1193 | evaluated, see font-lock.el/jit-lock.el as an example. This |
550a625e GM |
1194 | leads to a certain amount of ``normal'' recursion. |
1195 | ||
1196 | Also, just loading a file recursively is not always an error in | |
1197 | the general case; the second load may do something different. */ | |
3ba6fd9a | 1198 | { |
0902fe45 | 1199 | int load_count = 0; |
3ba6fd9a RS |
1200 | Lisp_Object tem; |
1201 | for (tem = Vloads_in_progress; CONSP (tem); tem = XCDR (tem)) | |
0902fe45 | 1202 | if (!NILP (Fequal (found, XCAR (tem))) && (++load_count > 3)) |
a0931322 | 1203 | signal_error ("Recursive load", Fcons (found, Vloads_in_progress)); |
3ba6fd9a RS |
1204 | record_unwind_protect (record_load_unwind, Vloads_in_progress); |
1205 | Vloads_in_progress = Fcons (found, Vloads_in_progress); | |
1206 | } | |
7ee3bd7b | 1207 | |
b9598260 SM |
1208 | /* All loads are by default dynamic, unless the file itself specifies |
1209 | otherwise using a file-variable in the first line. This is bound here | |
1210 | so that it takes effect whether or not we use | |
1211 | Vload_source_file_function. */ | |
1212 | specbind (Qlexical_binding, Qnil); | |
1213 | ||
48def666 | 1214 | /* Get the name for load-history. */ |
6bb6da3e | 1215 | hist_file_name = (! NILP (Vpurify_flag) |
a0931322 PE |
1216 | ? concat2 (Ffile_name_directory (file), |
1217 | Ffile_name_nondirectory (found)) | |
6bb6da3e AM |
1218 | : found) ; |
1219 | ||
8792be66 | 1220 | version = -1; |
1bb9a689 | 1221 | |
88852d45 | 1222 | /* Check for the presence of old-style quotes and warn about them. */ |
1d064697 SM |
1223 | specbind (Qold_style_backquotes, Qnil); |
1224 | record_unwind_protect (load_warn_old_style_backquotes, file); | |
1225 | ||
72af86bd | 1226 | if (!memcmp (SDATA (found) + SBYTES (found) - 4, ".elc", 4) |
7cded46f | 1227 | || (fd >= 0 && (version = safe_to_load_version (fd)) > 0)) |
96dc0f4e MB |
1228 | /* Load .elc files directly, but not when they are |
1229 | remote and have no handler! */ | |
078e7b4a | 1230 | { |
96dc0f4e | 1231 | if (fd != -2) |
da84f340 | 1232 | { |
96dc0f4e MB |
1233 | struct stat s1, s2; |
1234 | int result; | |
da84f340 | 1235 | |
6bb6da3e | 1236 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1237 | |
8792be66 | 1238 | if (version < 0 |
7cded46f | 1239 | && ! (version = safe_to_load_version (fd))) |
96dc0f4e MB |
1240 | { |
1241 | safe_p = 0; | |
1242 | if (!load_dangerous_libraries) | |
a0931322 | 1243 | error ("File `%s' was not compiled in Emacs", SDATA (found)); |
beb0b7f9 | 1244 | else if (!NILP (nomessage) && !force_load_messages) |
96dc0f4e MB |
1245 | message_with_string ("File `%s' not compiled in Emacs", found, 1); |
1246 | } | |
04fc68e7 | 1247 | |
96dc0f4e MB |
1248 | compiled = 1; |
1249 | ||
eb191db2 EZ |
1250 | efound = ENCODE_FILE (found); |
1251 | ||
26fbf20b | 1252 | #ifdef DOS_NT |
96dc0f4e | 1253 | fmode = "rb"; |
26fbf20b | 1254 | #endif /* DOS_NT */ |
e5533da6 PE |
1255 | result = stat (SSDATA (efound), &s1); |
1256 | if (result == 0) | |
1257 | { | |
1258 | SSET (efound, SBYTES (efound) - 1, 0); | |
1259 | result = stat (SSDATA (efound), &s2); | |
1260 | SSET (efound, SBYTES (efound) - 1, 'c'); | |
1261 | } | |
eb191db2 | 1262 | |
39adff0d | 1263 | if (result == 0 |
43aac990 | 1264 | && timespec_cmp (get_stat_mtime (&s1), get_stat_mtime (&s2)) < 0) |
96dc0f4e MB |
1265 | { |
1266 | /* Make the progress messages mention that source is newer. */ | |
1267 | newer = 1; | |
04fc68e7 | 1268 | |
96dc0f4e | 1269 | /* If we won't print another message, mention this anyway. */ |
beb0b7f9 | 1270 | if (!NILP (nomessage) && !force_load_messages) |
714d8c39 | 1271 | { |
0fc213e9 RS |
1272 | Lisp_Object msg_file; |
1273 | msg_file = Fsubstring (found, make_number (0), make_number (-1)); | |
714d8c39 | 1274 | message_with_string ("Source file `%s' newer than byte-compiled file", |
0fc213e9 | 1275 | msg_file, 1); |
714d8c39 | 1276 | } |
96dc0f4e | 1277 | } |
0fc213e9 | 1278 | UNGCPRO; |
51ac6f83 | 1279 | } |
078e7b4a | 1280 | } |
fe0e03f3 KH |
1281 | else |
1282 | { | |
1283 | /* We are loading a source file (*.el). */ | |
1284 | if (!NILP (Vload_source_file_function)) | |
1285 | { | |
7ee3bd7b | 1286 | Lisp_Object val; |
96dc0f4e MB |
1287 | |
1288 | if (fd >= 0) | |
a0931322 PE |
1289 | { |
1290 | emacs_close (fd); | |
1291 | clear_unwind_protect (fd_index); | |
1292 | } | |
6bb6da3e | 1293 | val = call4 (Vload_source_file_function, found, hist_file_name, |
7ee3bd7b | 1294 | NILP (noerror) ? Qnil : Qt, |
beb0b7f9 | 1295 | (NILP (nomessage) || force_load_messages) ? Qnil : Qt); |
7ee3bd7b | 1296 | return unbind_to (count, val); |
fe0e03f3 KH |
1297 | } |
1298 | } | |
078e7b4a | 1299 | |
6bb6da3e | 1300 | GCPRO3 (file, found, hist_file_name); |
0fc213e9 | 1301 | |
a0931322 | 1302 | if (fd < 0) |
35774242 | 1303 | { |
a0931322 PE |
1304 | /* We somehow got here with fd == -2, meaning the file is deemed |
1305 | to be remote. Don't even try to reopen the file locally; | |
1306 | just force a failure. */ | |
1307 | stream = NULL; | |
1308 | errno = EINVAL; | |
35774242 EZ |
1309 | } |
1310 | else | |
078e7b4a | 1311 | { |
a0931322 | 1312 | #ifdef WINDOWSNT |
68c45bf0 | 1313 | emacs_close (fd); |
a0931322 PE |
1314 | clear_unwind_protect (fd_index); |
1315 | efound = ENCODE_FILE (found); | |
1316 | stream = emacs_fopen (SSDATA (efound), fmode); | |
1317 | #else | |
1318 | stream = fdopen (fd, fmode); | |
1319 | #endif | |
078e7b4a | 1320 | } |
a0931322 PE |
1321 | if (! stream) |
1322 | report_file_error ("Opening stdio stream", file); | |
f4b1eb36 | 1323 | set_unwind_protect_ptr (fd_index, fclose_unwind, stream); |
078e7b4a | 1324 | |
4b104c41 | 1325 | if (! NILP (Vpurify_flag)) |
5e617bc2 | 1326 | Vpreloaded_file_list = Fcons (Fpurecopy (file), Vpreloaded_file_list); |
4b104c41 | 1327 | |
beb0b7f9 | 1328 | if (NILP (nomessage) || force_load_messages) |
04fc68e7 | 1329 | { |
da84f340 GM |
1330 | if (!safe_p) |
1331 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...", | |
1332 | file, 1); | |
1333 | else if (!compiled) | |
e28552a4 | 1334 | message_with_string ("Loading %s (source)...", file, 1); |
db5cae4b | 1335 | else if (newer) |
e28552a4 RS |
1336 | message_with_string ("Loading %s (compiled; note, source file is newer)...", |
1337 | file, 1); | |
db5cae4b | 1338 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1339 | message_with_string ("Loading %s...", file, 1); |
04fc68e7 | 1340 | } |
078e7b4a | 1341 | |
20ea2964 | 1342 | specbind (Qload_file_name, found); |
74549846 | 1343 | specbind (Qinhibit_file_name_operation, Qnil); |
2baf5e76 | 1344 | specbind (Qload_in_progress, Qt); |
b9598260 SM |
1345 | |
1346 | instream = stream; | |
1347 | if (lisp_file_lexically_bound_p (Qget_file_char)) | |
1348 | Fset (Qlexical_binding, Qt); | |
1349 | ||
ab2a47e1 | 1350 | if (! version || version >= 22) |
b883cdb2 | 1351 | readevalloop (Qget_file_char, stream, hist_file_name, |
defb1411 | 1352 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 KH |
1353 | else |
1354 | { | |
1355 | /* We can't handle a file which was compiled with | |
1356 | byte-compile-dynamic by older version of Emacs. */ | |
1357 | specbind (Qload_force_doc_strings, Qt); | |
defb1411 | 1358 | readevalloop (Qget_emacs_mule_file_char, stream, hist_file_name, |
768d4533 | 1359 | 0, Qnil, Qnil, Qnil, Qnil); |
8792be66 | 1360 | } |
078e7b4a JB |
1361 | unbind_to (count, Qnil); |
1362 | ||
48def666 | 1363 | /* Run any eval-after-load forms for this file. */ |
428b13d6 | 1364 | if (!NILP (Ffboundp (Qdo_after_load_evaluation))) |
6bb6da3e AM |
1365 | call1 (Qdo_after_load_evaluation, hist_file_name) ; |
1366 | ||
078e7b4a JB |
1367 | UNGCPRO; |
1368 | ||
97dead2d | 1369 | xfree (saved_doc_string); |
b2a30870 RS |
1370 | saved_doc_string = 0; |
1371 | saved_doc_string_size = 0; | |
1372 | ||
70fdbb46 | 1373 | xfree (prev_saved_doc_string); |
c15cfd1f RS |
1374 | prev_saved_doc_string = 0; |
1375 | prev_saved_doc_string_size = 0; | |
1376 | ||
beb0b7f9 | 1377 | if (!noninteractive && (NILP (nomessage) || force_load_messages)) |
04fc68e7 | 1378 | { |
da84f340 GM |
1379 | if (!safe_p) |
1380 | message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done", | |
1381 | file, 1); | |
1382 | else if (!compiled) | |
e28552a4 | 1383 | message_with_string ("Loading %s (source)...done", file, 1); |
db5cae4b | 1384 | else if (newer) |
e28552a4 RS |
1385 | message_with_string ("Loading %s (compiled; note, source file is newer)...done", |
1386 | file, 1); | |
db5cae4b | 1387 | else /* The typical case; compiled file newer than source file. */ |
e28552a4 | 1388 | message_with_string ("Loading %s...done", file, 1); |
04fc68e7 | 1389 | } |
7ee3bd7b | 1390 | |
078e7b4a JB |
1391 | return Qt; |
1392 | } | |
078e7b4a | 1393 | \f |
7cded46f | 1394 | static bool |
971de7fb | 1395 | complete_filename_p (Lisp_Object pathname) |
078e7b4a | 1396 | { |
7cded46f | 1397 | const unsigned char *s = SDATA (pathname); |
317073d5 | 1398 | return (IS_DIRECTORY_SEP (s[0]) |
d5db4077 | 1399 | || (SCHARS (pathname) > 2 |
7c2fb837 | 1400 | && IS_DEVICE_SEP (s[1]) && IS_DIRECTORY_SEP (s[2]))); |
078e7b4a JB |
1401 | } |
1402 | ||
86d00812 SM |
1403 | DEFUN ("locate-file-internal", Flocate_file_internal, Slocate_file_internal, 2, 4, 0, |
1404 | doc: /* Search for FILENAME through PATH. | |
57a131fb | 1405 | Returns the file's name in absolute form, or nil if not found. |
86d00812 SM |
1406 | If SUFFIXES is non-nil, it should be a list of suffixes to append to |
1407 | file name when searching. | |
1408 | If non-nil, PREDICATE is used instead of `file-readable-p'. | |
73dcdb9f | 1409 | PREDICATE can also be an integer to pass to the faccessat(2) function, |
aa56f361 SM |
1410 | in which case file-name-handlers are ignored. |
1411 | This function will normally skip directories, so if you want it to find | |
1412 | directories, make sure the PREDICATE function returns `dir-ok' for them. */) | |
5842a27b | 1413 | (Lisp_Object filename, Lisp_Object path, Lisp_Object suffixes, Lisp_Object predicate) |
86d00812 SM |
1414 | { |
1415 | Lisp_Object file; | |
1416 | int fd = openp (path, filename, suffixes, &file, predicate); | |
a773ed9a | 1417 | if (NILP (predicate) && fd >= 0) |
bacba3c2 | 1418 | emacs_close (fd); |
86d00812 SM |
1419 | return file; |
1420 | } | |
1421 | ||
aa56f361 | 1422 | static Lisp_Object Qdir_ok; |
86d00812 | 1423 | |
078e7b4a JB |
1424 | /* Search for a file whose name is STR, looking in directories |
1425 | in the Lisp list PATH, and trying suffixes from SUFFIX. | |
5f86adcd PE |
1426 | On success, return a file descriptor (or 1 or -2 as described below). |
1427 | On failure, return -1 and set errno. | |
078e7b4a | 1428 | |
e61b9b87 | 1429 | SUFFIXES is a list of strings containing possible suffixes. |
e0f24100 | 1430 | The empty suffix is automatically added if the list is empty. |
e61b9b87 | 1431 | |
86d00812 SM |
1432 | PREDICATE non-nil means don't open the files, |
1433 | just look for one that satisfies the predicate. In this case, | |
5f86adcd | 1434 | return 1 on success. The predicate can be a lisp function or |
86d00812 SM |
1435 | an integer to pass to `access' (in which case file-name-handlers |
1436 | are ignored). | |
078e7b4a JB |
1437 | |
1438 | If STOREPTR is nonzero, it points to a slot where the name of | |
1439 | the file actually found should be stored as a Lisp string. | |
74549846 RS |
1440 | nil is stored there on failure. |
1441 | ||
96dc0f4e | 1442 | If the file we find is remote, return -2 |
86d00812 | 1443 | but store the found remote file name in *STOREPTR. */ |
078e7b4a JB |
1444 | |
1445 | int | |
5f86adcd PE |
1446 | openp (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes, |
1447 | Lisp_Object *storeptr, Lisp_Object predicate) | |
078e7b4a | 1448 | { |
d311d28c | 1449 | ptrdiff_t fn_size = 100; |
078e7b4a | 1450 | char buf[100]; |
7cded46f PE |
1451 | char *fn = buf; |
1452 | bool absolute = 0; | |
d311d28c | 1453 | ptrdiff_t want_length; |
74549846 | 1454 | Lisp_Object filename; |
eb191db2 EZ |
1455 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, gcpro6; |
1456 | Lisp_Object string, tail, encoded_fn; | |
d311d28c | 1457 | ptrdiff_t max_suffix_len = 0; |
5f86adcd | 1458 | int last_errno = ENOENT; |
e61b9b87 | 1459 | |
6f8eafd1 SM |
1460 | CHECK_STRING (str); |
1461 | ||
e61b9b87 SM |
1462 | for (tail = suffixes; CONSP (tail); tail = XCDR (tail)) |
1463 | { | |
f5df591a | 1464 | CHECK_STRING_CAR (tail); |
e61b9b87 | 1465 | max_suffix_len = max (max_suffix_len, |
d5db4077 | 1466 | SBYTES (XCAR (tail))); |
e61b9b87 | 1467 | } |
078e7b4a | 1468 | |
8b9d426a | 1469 | string = filename = encoded_fn = Qnil; |
eb191db2 EZ |
1470 | GCPRO6 (str, string, filename, path, suffixes, encoded_fn); |
1471 | ||
078e7b4a JB |
1472 | if (storeptr) |
1473 | *storeptr = Qnil; | |
1474 | ||
1475 | if (complete_filename_p (str)) | |
1476 | absolute = 1; | |
1477 | ||
e61b9b87 | 1478 | for (; CONSP (path); path = XCDR (path)) |
078e7b4a | 1479 | { |
e61b9b87 | 1480 | filename = Fexpand_file_name (str, XCAR (path)); |
078e7b4a | 1481 | if (!complete_filename_p (filename)) |
48def666 | 1482 | /* If there are non-absolute elts in PATH (eg "."). */ |
078e7b4a | 1483 | /* Of course, this could conceivably lose if luser sets |
48def666 | 1484 | default-directory to be something non-absolute... */ |
078e7b4a | 1485 | { |
4b4deea2 | 1486 | filename = Fexpand_file_name (filename, BVAR (current_buffer, directory)); |
078e7b4a | 1487 | if (!complete_filename_p (filename)) |
48def666 | 1488 | /* Give up on this path element! */ |
078e7b4a JB |
1489 | continue; |
1490 | } | |
1491 | ||
640ee02d | 1492 | /* Calculate maximum length of any filename made from |
078e7b4a | 1493 | this path element/specified file name and any possible suffix. */ |
640ee02d PE |
1494 | want_length = max_suffix_len + SBYTES (filename); |
1495 | if (fn_size <= want_length) | |
38182d90 | 1496 | fn = alloca (fn_size = 100 + want_length); |
078e7b4a | 1497 | |
078e7b4a | 1498 | /* Loop over suffixes. */ |
6c6f1994 | 1499 | for (tail = NILP (suffixes) ? list1 (empty_unibyte_string) : suffixes; |
e61b9b87 | 1500 | CONSP (tail); tail = XCDR (tail)) |
078e7b4a | 1501 | { |
d0065ff1 EZ |
1502 | Lisp_Object suffix = XCAR (tail); |
1503 | ptrdiff_t fnlen, lsuffix = SBYTES (suffix); | |
74549846 | 1504 | Lisp_Object handler; |
078e7b4a | 1505 | |
c49afcd7 RS |
1506 | /* Concatenate path element/specified name with the suffix. |
1507 | If the directory starts with /:, remove that. */ | |
e99a530f PE |
1508 | int prefixlen = ((SCHARS (filename) > 2 |
1509 | && SREF (filename, 0) == '/' | |
1510 | && SREF (filename, 1) == ':') | |
1511 | ? 2 : 0); | |
1512 | fnlen = SBYTES (filename) - prefixlen; | |
1513 | memcpy (fn, SDATA (filename) + prefixlen, fnlen); | |
d0065ff1 | 1514 | memcpy (fn + fnlen, SDATA (suffix), lsuffix + 1); |
e99a530f | 1515 | fnlen += lsuffix; |
74549846 | 1516 | /* Check that the file exists and is not a directory. */ |
e61b9b87 SM |
1517 | /* We used to only check for handlers on non-absolute file names: |
1518 | if (absolute) | |
1519 | handler = Qnil; | |
1520 | else | |
1521 | handler = Ffind_file_name_handler (filename, Qfile_exists_p); | |
1522 | It's not clear why that was the case and it breaks things like | |
1523 | (load "/bar.el") where the file is actually "/bar.el.gz". */ | |
d0065ff1 EZ |
1524 | /* make_string has its own ideas on when to return a unibyte |
1525 | string and when a multibyte string, but we know better. | |
1526 | We must have a unibyte string when dumping, since | |
1527 | file-name encoding is shaky at best at that time, and in | |
1528 | particular default-file-name-coding-system is reset | |
1529 | several times during loadup. We therefore don't want to | |
1530 | encode the file before passing it to file I/O library | |
1531 | functions. */ | |
1532 | if (!STRING_MULTIBYTE (filename) && !STRING_MULTIBYTE (suffix)) | |
1533 | string = make_unibyte_string (fn, fnlen); | |
1534 | else | |
1535 | string = make_string (fn, fnlen); | |
4773b8ca | 1536 | handler = Ffind_file_name_handler (string, Qfile_exists_p); |
86d00812 SM |
1537 | if ((!NILP (handler) || !NILP (predicate)) && !NATNUMP (predicate)) |
1538 | { | |
73dcdb9f | 1539 | bool exists; |
86d00812 SM |
1540 | if (NILP (predicate)) |
1541 | exists = !NILP (Ffile_readable_p (string)); | |
1542 | else | |
aa56f361 SM |
1543 | { |
1544 | Lisp_Object tmp = call1 (predicate, string); | |
5f86adcd PE |
1545 | if (NILP (tmp)) |
1546 | exists = 0; | |
1547 | else if (EQ (tmp, Qdir_ok) | |
1548 | || NILP (Ffile_directory_p (string))) | |
1549 | exists = 1; | |
1550 | else | |
1551 | { | |
1552 | exists = 0; | |
1553 | last_errno = EISDIR; | |
1554 | } | |
aa56f361 | 1555 | } |
74549846 RS |
1556 | |
1557 | if (exists) | |
078e7b4a JB |
1558 | { |
1559 | /* We succeeded; return this descriptor and filename. */ | |
1560 | if (storeptr) | |
eb191db2 | 1561 | *storeptr = string; |
5ef2a3c0 | 1562 | UNGCPRO; |
96dc0f4e | 1563 | return -2; |
74549846 RS |
1564 | } |
1565 | } | |
1566 | else | |
1567 | { | |
73dcdb9f | 1568 | int fd; |
4b2dd274 | 1569 | const char *pfn; |
eb191db2 EZ |
1570 | |
1571 | encoded_fn = ENCODE_FILE (string); | |
42a5b22f | 1572 | pfn = SSDATA (encoded_fn); |
f0a80175 | 1573 | |
73dcdb9f PE |
1574 | /* Check that we can access or open it. */ |
1575 | if (NATNUMP (predicate)) | |
5f86adcd PE |
1576 | { |
1577 | fd = -1; | |
1578 | if (INT_MAX < XFASTINT (predicate)) | |
1579 | last_errno = EINVAL; | |
1580 | else if (faccessat (AT_FDCWD, pfn, XFASTINT (predicate), | |
73dcdb9f PE |
1581 | AT_EACCESS) |
1582 | == 0) | |
5f86adcd PE |
1583 | { |
1584 | if (file_directory_p (pfn)) | |
1585 | last_errno = EISDIR; | |
1586 | else | |
1587 | fd = 1; | |
1588 | } | |
1589 | } | |
73dcdb9f PE |
1590 | else |
1591 | { | |
73dcdb9f | 1592 | fd = emacs_open (pfn, O_RDONLY, 0); |
5f86adcd | 1593 | if (fd < 0) |
a0931322 PE |
1594 | { |
1595 | if (errno != ENOENT) | |
1596 | last_errno = errno; | |
1597 | } | |
5f86adcd | 1598 | else |
74549846 | 1599 | { |
5f86adcd PE |
1600 | struct stat st; |
1601 | int err = (fstat (fd, &st) != 0 ? errno | |
1602 | : S_ISDIR (st.st_mode) ? EISDIR : 0); | |
1603 | if (err) | |
1604 | { | |
1605 | last_errno = err; | |
1606 | emacs_close (fd); | |
1607 | fd = -1; | |
1608 | } | |
74549846 | 1609 | } |
078e7b4a | 1610 | } |
73dcdb9f PE |
1611 | |
1612 | if (fd >= 0) | |
1613 | { | |
1614 | /* We succeeded; return this descriptor and filename. */ | |
1615 | if (storeptr) | |
1616 | *storeptr = string; | |
1617 | UNGCPRO; | |
1618 | return fd; | |
1619 | } | |
078e7b4a | 1620 | } |
078e7b4a | 1621 | } |
5a6e5452 | 1622 | if (absolute) |
5ef2a3c0 | 1623 | break; |
078e7b4a JB |
1624 | } |
1625 | ||
5ef2a3c0 | 1626 | UNGCPRO; |
5f86adcd | 1627 | errno = last_errno; |
5ef2a3c0 | 1628 | return -1; |
078e7b4a JB |
1629 | } |
1630 | ||
1631 | \f | |
ae321d28 RS |
1632 | /* Merge the list we've accumulated of globals from the current input source |
1633 | into the load_history variable. The details depend on whether | |
b502a9a1 RS |
1634 | the source has an associated file name or not. |
1635 | ||
1636 | FILENAME is the file name that we are loading from. | |
7cded46f PE |
1637 | |
1638 | ENTIRE is true if loading that entire file, false if evaluating | |
1639 | part of it. */ | |
ae321d28 RS |
1640 | |
1641 | static void | |
7cded46f | 1642 | build_load_history (Lisp_Object filename, bool entire) |
ae321d28 | 1643 | { |
7cded46f PE |
1644 | Lisp_Object tail, prev, newelt; |
1645 | Lisp_Object tem, tem2; | |
1646 | bool foundit = 0; | |
ae321d28 RS |
1647 | |
1648 | tail = Vload_history; | |
1649 | prev = Qnil; | |
b502a9a1 | 1650 | |
86d00812 | 1651 | while (CONSP (tail)) |
ae321d28 | 1652 | { |
86d00812 | 1653 | tem = XCAR (tail); |
ae321d28 | 1654 | |
48def666 | 1655 | /* Find the feature's previous assoc list... */ |
b502a9a1 | 1656 | if (!NILP (Fequal (filename, Fcar (tem)))) |
ae321d28 RS |
1657 | { |
1658 | foundit = 1; | |
1659 | ||
48def666 | 1660 | /* If we're loading the entire file, remove old data. */ |
b502a9a1 | 1661 | if (entire) |
86d00812 | 1662 | { |
ae321d28 | 1663 | if (NILP (prev)) |
86d00812 | 1664 | Vload_history = XCDR (tail); |
ae321d28 | 1665 | else |
86d00812 | 1666 | Fsetcdr (prev, XCDR (tail)); |
ae321d28 RS |
1667 | } |
1668 | ||
1669 | /* Otherwise, cons on new symbols that are not already members. */ | |
1670 | else | |
1671 | { | |
1672 | tem2 = Vcurrent_load_list; | |
1673 | ||
1674 | while (CONSP (tem2)) | |
1675 | { | |
86d00812 | 1676 | newelt = XCAR (tem2); |
ae321d28 | 1677 | |
d642e4f9 | 1678 | if (NILP (Fmember (newelt, tem))) |
86d00812 SM |
1679 | Fsetcar (tail, Fcons (XCAR (tem), |
1680 | Fcons (newelt, XCDR (tem)))); | |
ae321d28 | 1681 | |
86d00812 | 1682 | tem2 = XCDR (tem2); |
ae321d28 RS |
1683 | QUIT; |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | else | |
1688 | prev = tail; | |
86d00812 | 1689 | tail = XCDR (tail); |
ae321d28 RS |
1690 | QUIT; |
1691 | } | |
1692 | ||
b502a9a1 RS |
1693 | /* If we're loading an entire file, cons the new assoc onto the |
1694 | front of load-history, the most-recently-loaded position. Also | |
1695 | do this if we didn't find an existing member for the file. */ | |
1696 | if (entire || !foundit) | |
8a1f1537 RS |
1697 | Vload_history = Fcons (Fnreverse (Vcurrent_load_list), |
1698 | Vload_history); | |
ae321d28 RS |
1699 | } |
1700 | ||
27e498e6 PE |
1701 | static void |
1702 | readevalloop_1 (int old) | |
94e554db | 1703 | { |
27e498e6 | 1704 | load_convert_to_unibyte = old; |
94e554db RS |
1705 | } |
1706 | ||
9c97398c GM |
1707 | /* Signal an `end-of-file' error, if possible with file name |
1708 | information. */ | |
1709 | ||
845ca893 | 1710 | static _Noreturn void |
971de7fb | 1711 | end_of_file_error (void) |
9c97398c | 1712 | { |
9c97398c | 1713 | if (STRINGP (Vload_file_name)) |
336d4a9c | 1714 | xsignal1 (Qend_of_file, Vload_file_name); |
9c97398c | 1715 | |
336d4a9c | 1716 | xsignal0 (Qend_of_file); |
9c97398c GM |
1717 | } |
1718 | ||
94e554db | 1719 | /* UNIBYTE specifies how to set load_convert_to_unibyte |
976350af | 1720 | for this invocation. |
4c03c46d | 1721 | READFUN, if non-nil, is used instead of `read'. |
1ed7b9ae RS |
1722 | |
1723 | START, END specify region to read in current buffer (from eval-region). | |
1724 | If the input is not from a buffer, they must be nil. */ | |
94e554db | 1725 | |
078e7b4a | 1726 | static void |
dd4c5104 DN |
1727 | readevalloop (Lisp_Object readcharfun, |
1728 | FILE *stream, | |
1729 | Lisp_Object sourcename, | |
7cded46f | 1730 | bool printflag, |
dd4c5104 DN |
1731 | Lisp_Object unibyte, Lisp_Object readfun, |
1732 | Lisp_Object start, Lisp_Object end) | |
078e7b4a JB |
1733 | { |
1734 | register int c; | |
1735 | register Lisp_Object val; | |
d311d28c | 1736 | ptrdiff_t count = SPECPDL_INDEX (); |
0a37f512 | 1737 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; |
49cf7ff4 | 1738 | struct buffer *b = 0; |
7cded46f | 1739 | bool continue_reading_p; |
b9598260 | 1740 | Lisp_Object lex_bound; |
7cded46f PE |
1741 | /* True if reading an entire buffer. */ |
1742 | bool whole_buffer = 0; | |
1743 | /* True on the first time around. */ | |
1744 | bool first_sexp = 1; | |
972debf2 SM |
1745 | Lisp_Object macroexpand = intern ("internal-macroexpand-for-load"); |
1746 | ||
1747 | if (NILP (Ffboundp (macroexpand)) | |
1748 | /* Don't macroexpand in .elc files, since it should have been done | |
1749 | already. We actually don't know whether we're in a .elc file or not, | |
735135f9 | 1750 | so we use circumstantial evidence: .el files normally go through |
972debf2 SM |
1751 | Vload_source_file_function -> load-with-code-conversion |
1752 | -> eval-buffer. */ | |
1753 | || EQ (readcharfun, Qget_file_char) | |
1754 | || EQ (readcharfun, Qget_emacs_mule_file_char)) | |
1755 | macroexpand = Qnil; | |
d11db2c8 RS |
1756 | |
1757 | if (MARKERP (readcharfun)) | |
1758 | { | |
1759 | if (NILP (start)) | |
8878319c | 1760 | start = readcharfun; |
d11db2c8 | 1761 | } |
49cf7ff4 RS |
1762 | |
1763 | if (BUFFERP (readcharfun)) | |
1764 | b = XBUFFER (readcharfun); | |
1765 | else if (MARKERP (readcharfun)) | |
1766 | b = XMARKER (readcharfun)->buffer; | |
078e7b4a | 1767 | |
1ed7b9ae RS |
1768 | /* We assume START is nil when input is not from a buffer. */ |
1769 | if (! NILP (start) && !b) | |
1088b922 | 1770 | emacs_abort (); |
1ed7b9ae | 1771 | |
0a37f512 | 1772 | specbind (Qstandard_input, readcharfun); /* GCPROs readcharfun. */ |
8a1f1537 | 1773 | specbind (Qcurrent_load_list, Qnil); |
27e498e6 | 1774 | record_unwind_protect_int (readevalloop_1, load_convert_to_unibyte); |
94e554db | 1775 | load_convert_to_unibyte = !NILP (unibyte); |
078e7b4a | 1776 | |
b9598260 SM |
1777 | /* If lexical binding is active (either because it was specified in |
1778 | the file's header, or via a buffer-local variable), create an empty | |
1779 | lexical environment, otherwise, turn off lexical binding. */ | |
1780 | lex_bound = find_symbol_value (Qlexical_binding); | |
f07a954e | 1781 | specbind (Qinternal_interpreter_environment, |
6c6f1994 PE |
1782 | (NILP (lex_bound) || EQ (lex_bound, Qunbound) |
1783 | ? Qnil : list1 (Qt))); | |
b9598260 | 1784 | |
0a37f512 | 1785 | GCPRO4 (sourcename, readfun, start, end); |
ae321d28 | 1786 | |
48def666 | 1787 | /* Try to ensure sourcename is a truename, except whilst preloading. */ |
6bb6da3e | 1788 | if (NILP (Vpurify_flag) |
91fe9496 SM |
1789 | && !NILP (sourcename) && !NILP (Ffile_name_absolute_p (sourcename)) |
1790 | && !NILP (Ffboundp (Qfile_truename))) | |
6bb6da3e AM |
1791 | sourcename = call1 (Qfile_truename, sourcename) ; |
1792 | ||
ae321d28 RS |
1793 | LOADHIST_ATTACH (sourcename); |
1794 | ||
f38952fe GM |
1795 | continue_reading_p = 1; |
1796 | while (continue_reading_p) | |
078e7b4a | 1797 | { |
d311d28c | 1798 | ptrdiff_t count1 = SPECPDL_INDEX (); |
4c03c46d | 1799 | |
e578f381 | 1800 | if (b != 0 && !BUFFER_LIVE_P (b)) |
49cf7ff4 RS |
1801 | error ("Reading from killed buffer"); |
1802 | ||
4c03c46d KS |
1803 | if (!NILP (start)) |
1804 | { | |
721b7d9e | 1805 | /* Switch to the buffer we are reading from. */ |
4c03c46d | 1806 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e RS |
1807 | set_buffer_internal (b); |
1808 | ||
1809 | /* Save point in it. */ | |
4c03c46d | 1810 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
721b7d9e | 1811 | /* Save ZV in it. */ |
4c03c46d | 1812 | record_unwind_protect (save_restriction_restore, save_restriction_save ()); |
721b7d9e RS |
1813 | /* Those get unbound after we read one expression. */ |
1814 | ||
1815 | /* Set point and ZV around stuff to be read. */ | |
4c03c46d | 1816 | Fgoto_char (start); |
d11db2c8 RS |
1817 | if (!NILP (end)) |
1818 | Fnarrow_to_region (make_number (BEGV), end); | |
1819 | ||
1820 | /* Just for cleanliness, convert END to a marker | |
1821 | if it is an integer. */ | |
1822 | if (INTEGERP (end)) | |
1823 | end = Fpoint_max_marker (); | |
4c03c46d KS |
1824 | } |
1825 | ||
d11db2c8 RS |
1826 | /* On the first cycle, we can easily test here |
1827 | whether we are reading the whole buffer. */ | |
1828 | if (b && first_sexp) | |
1829 | whole_buffer = (PT == BEG && ZV == Z); | |
1830 | ||
078e7b4a | 1831 | instream = stream; |
4c03c46d | 1832 | read_next: |
078e7b4a JB |
1833 | c = READCHAR; |
1834 | if (c == ';') | |
1835 | { | |
1836 | while ((c = READCHAR) != '\n' && c != -1); | |
4c03c46d KS |
1837 | goto read_next; |
1838 | } | |
1839 | if (c < 0) | |
1840 | { | |
1841 | unbind_to (count1, Qnil); | |
1842 | break; | |
078e7b4a | 1843 | } |
6069d957 RS |
1844 | |
1845 | /* Ignore whitespace here, so we can detect eof. */ | |
adef3de7 | 1846 | if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r' |
ed497dd4 | 1847 | || c == 0xa0) /* NBSP */ |
4c03c46d | 1848 | goto read_next; |
078e7b4a | 1849 | |
265a9e55 | 1850 | if (!NILP (Vpurify_flag) && c == '(') |
078e7b4a | 1851 | { |
48def666 | 1852 | val = read_list (0, readcharfun); |
078e7b4a JB |
1853 | } |
1854 | else | |
1855 | { | |
1856 | UNREAD (c); | |
4ad679f9 | 1857 | read_objects = Qnil; |
f38952fe GM |
1858 | if (!NILP (readfun)) |
1859 | { | |
1860 | val = call1 (readfun, readcharfun); | |
1861 | ||
1862 | /* If READCHARFUN has set point to ZV, we should | |
1863 | stop reading, even if the form read sets point | |
1864 | to a different value when evaluated. */ | |
1865 | if (BUFFERP (readcharfun)) | |
1866 | { | |
0902fe45 PE |
1867 | struct buffer *buf = XBUFFER (readcharfun); |
1868 | if (BUF_PT (buf) == BUF_ZV (buf)) | |
f38952fe GM |
1869 | continue_reading_p = 0; |
1870 | } | |
1871 | } | |
976350af | 1872 | else if (! NILP (Vload_read_function)) |
84a15045 | 1873 | val = call1 (Vload_read_function, readcharfun); |
976350af | 1874 | else |
abb13b09 | 1875 | val = read_internal_start (readcharfun, Qnil, Qnil); |
078e7b4a JB |
1876 | } |
1877 | ||
4c03c46d KS |
1878 | if (!NILP (start) && continue_reading_p) |
1879 | start = Fpoint_marker (); | |
d11db2c8 RS |
1880 | |
1881 | /* Restore saved point and BEGV. */ | |
4c03c46d KS |
1882 | unbind_to (count1, Qnil); |
1883 | ||
d11db2c8 | 1884 | /* Now eval what we just read. */ |
972debf2 SM |
1885 | if (!NILP (macroexpand)) |
1886 | val = call1 (macroexpand, val); | |
defb1411 | 1887 | val = eval_sub (val); |
f38952fe | 1888 | |
078e7b4a JB |
1889 | if (printflag) |
1890 | { | |
1891 | Vvalues = Fcons (val, Vvalues); | |
1892 | if (EQ (Vstandard_output, Qt)) | |
1893 | Fprin1 (val, Qnil); | |
1894 | else | |
1895 | Fprint (val, Qnil); | |
1896 | } | |
d11db2c8 RS |
1897 | |
1898 | first_sexp = 0; | |
078e7b4a JB |
1899 | } |
1900 | ||
8878319c | 1901 | build_load_history (sourcename, |
d11db2c8 | 1902 | stream || whole_buffer); |
b502a9a1 | 1903 | |
ae321d28 RS |
1904 | UNGCPRO; |
1905 | ||
078e7b4a JB |
1906 | unbind_to (count, Qnil); |
1907 | } | |
1908 | ||
1076254d | 1909 | DEFUN ("eval-buffer", Feval_buffer, Seval_buffer, 0, 5, "", |
5de38842 | 1910 | doc: /* Execute the current buffer as Lisp code. |
72097cd9 CY |
1911 | When called from a Lisp program (i.e., not interactively), this |
1912 | function accepts up to five optional arguments: | |
5de38842 PJ |
1913 | BUFFER is the buffer to evaluate (nil means use current buffer). |
1914 | PRINTFLAG controls printing of output: | |
72097cd9 CY |
1915 | A value of nil means discard it; anything else is stream for print. |
1916 | FILENAME specifies the file name to use for `load-history'. | |
1917 | UNIBYTE, if non-nil, specifies `load-convert-to-unibyte' for this | |
1918 | invocation. | |
1919 | DO-ALLOW-PRINT, if non-nil, specifies that `print' and related | |
1920 | functions should work normally even if PRINTFLAG is nil. | |
5de38842 PJ |
1921 | |
1922 | This function preserves the position of point. */) | |
5842a27b | 1923 | (Lisp_Object buffer, Lisp_Object printflag, Lisp_Object filename, Lisp_Object unibyte, Lisp_Object do_allow_print) |
228d4b1c | 1924 | { |
d311d28c | 1925 | ptrdiff_t count = SPECPDL_INDEX (); |
228d4b1c JA |
1926 | Lisp_Object tem, buf; |
1927 | ||
9391b698 | 1928 | if (NILP (buffer)) |
228d4b1c JA |
1929 | buf = Fcurrent_buffer (); |
1930 | else | |
9391b698 | 1931 | buf = Fget_buffer (buffer); |
dfdb645c | 1932 | if (NILP (buf)) |
13febd85 | 1933 | error ("No such buffer"); |
228d4b1c | 1934 | |
1076254d | 1935 | if (NILP (printflag) && NILP (do_allow_print)) |
228d4b1c JA |
1936 | tem = Qsymbolp; |
1937 | else | |
1938 | tem = printflag; | |
13febd85 RS |
1939 | |
1940 | if (NILP (filename)) | |
4b4deea2 | 1941 | filename = BVAR (XBUFFER (buf), filename); |
13febd85 | 1942 | |
3f39f996 | 1943 | specbind (Qeval_buffer_list, Fcons (buf, Veval_buffer_list)); |
228d4b1c JA |
1944 | specbind (Qstandard_output, tem); |
1945 | record_unwind_protect (save_excursion_restore, save_excursion_save ()); | |
bf1c0f27 | 1946 | BUF_TEMP_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf))); |
7200d79c | 1947 | specbind (Qlexical_binding, lisp_file_lexically_bound_p (buf) ? Qt : Qnil); |
defb1411 | 1948 | readevalloop (buf, 0, filename, |
4c03c46d | 1949 | !NILP (printflag), unibyte, Qnil, Qnil, Qnil); |
cb09ab7a | 1950 | unbind_to (count, Qnil); |
228d4b1c JA |
1951 | |
1952 | return Qnil; | |
1953 | } | |
1954 | ||
976350af | 1955 | DEFUN ("eval-region", Feval_region, Seval_region, 2, 4, "r", |
5de38842 PJ |
1956 | doc: /* Execute the region as Lisp code. |
1957 | When called from programs, expects two arguments, | |
1958 | giving starting and ending indices in the current buffer | |
1959 | of the text to be executed. | |
1960 | Programs can pass third argument PRINTFLAG which controls output: | |
51d8b30e | 1961 | A value of nil means discard it; anything else is stream for printing it. |
5de38842 PJ |
1962 | Also the fourth argument READ-FUNCTION, if non-nil, is used |
1963 | instead of `read' to read each expression. It gets one argument | |
1964 | which is the input stream for reading characters. | |
1965 | ||
1966 | This function does not move point. */) | |
5842a27b | 1967 | (Lisp_Object start, Lisp_Object end, Lisp_Object printflag, Lisp_Object read_function) |
078e7b4a | 1968 | { |
e4769531 | 1969 | /* FIXME: Do the eval-sexp-add-defvars dance! */ |
d311d28c | 1970 | ptrdiff_t count = SPECPDL_INDEX (); |
ae321d28 RS |
1971 | Lisp_Object tem, cbuf; |
1972 | ||
1973 | cbuf = Fcurrent_buffer (); | |
078e7b4a | 1974 | |
265a9e55 | 1975 | if (NILP (printflag)) |
078e7b4a JB |
1976 | tem = Qsymbolp; |
1977 | else | |
1978 | tem = printflag; | |
1979 | specbind (Qstandard_output, tem); | |
3f39f996 | 1980 | specbind (Qeval_buffer_list, Fcons (cbuf, Veval_buffer_list)); |
078e7b4a | 1981 | |
48def666 | 1982 | /* `readevalloop' calls functions which check the type of start and end. */ |
f619ad4c | 1983 | readevalloop (cbuf, 0, BVAR (XBUFFER (cbuf), filename), |
4c03c46d KS |
1984 | !NILP (printflag), Qnil, read_function, |
1985 | start, end); | |
078e7b4a JB |
1986 | |
1987 | return unbind_to (count, Qnil); | |
1988 | } | |
1989 | ||
078e7b4a | 1990 | \f |
a7ca3326 | 1991 | DEFUN ("read", Fread, Sread, 0, 1, 0, |
5de38842 PJ |
1992 | doc: /* Read one Lisp expression as text from STREAM, return as Lisp object. |
1993 | If STREAM is nil, use the value of `standard-input' (which see). | |
1994 | STREAM or the value of `standard-input' may be: | |
1995 | a buffer (read from point and advance it) | |
1996 | a marker (read from where it points and advance it) | |
1997 | a function (call it with no arguments for each character, | |
1998 | call it with a char as argument to push a char back) | |
1999 | a string (takes text from string, starting at the beginning) | |
2000 | t (read text line using minibuffer and use it, or read from | |
2001 | standard input in batch mode). */) | |
5842a27b | 2002 | (Lisp_Object stream) |
078e7b4a | 2003 | { |
5be02dff KH |
2004 | if (NILP (stream)) |
2005 | stream = Vstandard_input; | |
2006 | if (EQ (stream, Qt)) | |
2007 | stream = Qread_char; | |
5be02dff | 2008 | if (EQ (stream, Qread_char)) |
30c7e542 SM |
2009 | /* FIXME: ¿¡ When is this used !? */ |
2010 | return call1 (intern ("read-minibuffer"), | |
2011 | build_string ("Lisp expression: ")); | |
078e7b4a | 2012 | |
abb13b09 | 2013 | return read_internal_start (stream, Qnil, Qnil); |
078e7b4a JB |
2014 | } |
2015 | ||
a7ca3326 | 2016 | DEFUN ("read-from-string", Fread_from_string, Sread_from_string, 1, 3, 0, |
5de38842 PJ |
2017 | doc: /* Read one Lisp expression which is represented as text by STRING. |
2018 | Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX). | |
a4824228 | 2019 | FINAL-STRING-INDEX is an integer giving the position of the next |
a239d4e9 | 2020 | remaining character in STRING. |
5de38842 PJ |
2021 | START and END optionally delimit a substring of STRING from which to read; |
2022 | they default to 0 and (length STRING) respectively. */) | |
5842a27b | 2023 | (Lisp_Object string, Lisp_Object start, Lisp_Object end) |
078e7b4a | 2024 | { |
2530ceaf | 2025 | Lisp_Object ret; |
b7826503 | 2026 | CHECK_STRING (string); |
48def666 | 2027 | /* `read_internal_start' sets `read_from_string_index'. */ |
2530ceaf | 2028 | ret = read_internal_start (string, start, end); |
5135ab39 | 2029 | return Fcons (ret, make_number (read_from_string_index)); |
abb13b09 | 2030 | } |
078e7b4a | 2031 | |
abb13b09 | 2032 | /* Function to set up the global context we need in toplevel read |
48def666 | 2033 | calls. */ |
abb13b09 | 2034 | static Lisp_Object |
971de7fb | 2035 | read_internal_start (Lisp_Object stream, Lisp_Object start, Lisp_Object end) |
48def666 | 2036 | /* `start', `end' only used when stream is a string. */ |
abb13b09 CW |
2037 | { |
2038 | Lisp_Object retval; | |
078e7b4a | 2039 | |
abb13b09 | 2040 | readchar_count = 0; |
17634846 | 2041 | new_backquote_flag = 0; |
4ad679f9 | 2042 | read_objects = Qnil; |
abb13b09 CW |
2043 | if (EQ (Vread_with_symbol_positions, Qt) |
2044 | || EQ (Vread_with_symbol_positions, stream)) | |
2045 | Vread_symbol_positions_list = Qnil; | |
2046 | ||
8f924df7 KH |
2047 | if (STRINGP (stream) |
2048 | || ((CONSP (stream) && STRINGP (XCAR (stream))))) | |
abb13b09 | 2049 | { |
d311d28c | 2050 | ptrdiff_t startval, endval; |
8f924df7 | 2051 | Lisp_Object string; |
078e7b4a | 2052 | |
8f924df7 KH |
2053 | if (STRINGP (stream)) |
2054 | string = stream; | |
2055 | else | |
2056 | string = XCAR (stream); | |
078e7b4a | 2057 | |
abb13b09 | 2058 | if (NILP (end)) |
8f924df7 | 2059 | endval = SCHARS (string); |
abb13b09 CW |
2060 | else |
2061 | { | |
2062 | CHECK_NUMBER (end); | |
d311d28c | 2063 | if (! (0 <= XINT (end) && XINT (end) <= SCHARS (string))) |
8f924df7 | 2064 | args_out_of_range (string, end); |
d311d28c | 2065 | endval = XINT (end); |
abb13b09 | 2066 | } |
17634846 | 2067 | |
abb13b09 CW |
2068 | if (NILP (start)) |
2069 | startval = 0; | |
2070 | else | |
2071 | { | |
2072 | CHECK_NUMBER (start); | |
d311d28c | 2073 | if (! (0 <= XINT (start) && XINT (start) <= endval)) |
8f924df7 | 2074 | args_out_of_range (string, start); |
d311d28c | 2075 | startval = XINT (start); |
abb13b09 CW |
2076 | } |
2077 | read_from_string_index = startval; | |
8f924df7 | 2078 | read_from_string_index_byte = string_char_to_byte (string, startval); |
abb13b09 CW |
2079 | read_from_string_limit = endval; |
2080 | } | |
177c0ea7 | 2081 | |
abb13b09 CW |
2082 | retval = read0 (stream); |
2083 | if (EQ (Vread_with_symbol_positions, Qt) | |
2084 | || EQ (Vread_with_symbol_positions, stream)) | |
2085 | Vread_symbol_positions_list = Fnreverse (Vread_symbol_positions_list); | |
2086 | return retval; | |
078e7b4a JB |
2087 | } |
2088 | \f | |
336d4a9c KS |
2089 | |
2090 | /* Signal Qinvalid_read_syntax error. | |
2091 | S is error string of length N (if > 0) */ | |
2092 | ||
845ca893 | 2093 | static _Noreturn void |
e4d29b33 | 2094 | invalid_syntax (const char *s) |
336d4a9c | 2095 | { |
e4d29b33 | 2096 | xsignal1 (Qinvalid_read_syntax, build_string (s)); |
336d4a9c KS |
2097 | } |
2098 | ||
2099 | ||
6428369f | 2100 | /* Use this for recursive reads, in contexts where internal tokens |
48def666 | 2101 | are not allowed. */ |
e28552a4 | 2102 | |
078e7b4a | 2103 | static Lisp_Object |
971de7fb | 2104 | read0 (Lisp_Object readcharfun) |
078e7b4a JB |
2105 | { |
2106 | register Lisp_Object val; | |
e28552a4 | 2107 | int c; |
078e7b4a | 2108 | |
17634846 | 2109 | val = read1 (readcharfun, &c, 0); |
336d4a9c KS |
2110 | if (!c) |
2111 | return val; | |
078e7b4a | 2112 | |
336d4a9c KS |
2113 | xsignal1 (Qinvalid_read_syntax, |
2114 | Fmake_string (make_number (1), make_number (c))); | |
078e7b4a JB |
2115 | } |
2116 | \f | |
82cb60d3 | 2117 | static ptrdiff_t read_buffer_size; |
078e7b4a JB |
2118 | static char *read_buffer; |
2119 | ||
f6f79b37 | 2120 | /* Read a \-escape sequence, assuming we already read the `\'. |
8f924df7 | 2121 | If the escape sequence forces unibyte, return eight-bit char. */ |
6f7f43d5 | 2122 | |
078e7b4a | 2123 | static int |
7cded46f | 2124 | read_escape (Lisp_Object readcharfun, bool stringp) |
078e7b4a | 2125 | { |
7cded46f | 2126 | int c = READCHAR; |
9735b9ce | 2127 | /* \u allows up to four hex digits, \U up to eight. Default to the |
48def666 | 2128 | behavior for \u, and change this value in the case that \U is seen. */ |
71b169b8 | 2129 | int unicode_hex_count = 4; |
f6f79b37 | 2130 | |
078e7b4a JB |
2131 | switch (c) |
2132 | { | |
f3849f25 | 2133 | case -1: |
da3b886d | 2134 | end_of_file_error (); |
f3849f25 | 2135 | |
078e7b4a | 2136 | case 'a': |
265a9e55 | 2137 | return '\007'; |
078e7b4a JB |
2138 | case 'b': |
2139 | return '\b'; | |
f405a585 RS |
2140 | case 'd': |
2141 | return 0177; | |
078e7b4a JB |
2142 | case 'e': |
2143 | return 033; | |
2144 | case 'f': | |
2145 | return '\f'; | |
2146 | case 'n': | |
2147 | return '\n'; | |
2148 | case 'r': | |
2149 | return '\r'; | |
2150 | case 't': | |
2151 | return '\t'; | |
2152 | case 'v': | |
2153 | return '\v'; | |
2154 | case '\n': | |
2155 | return -1; | |
e28552a4 | 2156 | case ' ': |
e7fc914b KH |
2157 | if (stringp) |
2158 | return -1; | |
2159 | return ' '; | |
078e7b4a JB |
2160 | |
2161 | case 'M': | |
2162 | c = READCHAR; | |
2163 | if (c != '-') | |
2164 | error ("Invalid escape character syntax"); | |
2165 | c = READCHAR; | |
2166 | if (c == '\\') | |
8792be66 | 2167 | c = read_escape (readcharfun, 0); |
7bd279cd | 2168 | return c | meta_modifier; |
f405a585 RS |
2169 | |
2170 | case 'S': | |
2171 | c = READCHAR; | |
2172 | if (c != '-') | |
2173 | error ("Invalid escape character syntax"); | |
2174 | c = READCHAR; | |
2175 | if (c == '\\') | |
8792be66 | 2176 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2177 | return c | shift_modifier; |
2178 | ||
2179 | case 'H': | |
2180 | c = READCHAR; | |
2181 | if (c != '-') | |
2182 | error ("Invalid escape character syntax"); | |
2183 | c = READCHAR; | |
2184 | if (c == '\\') | |
8792be66 | 2185 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2186 | return c | hyper_modifier; |
2187 | ||
2188 | case 'A': | |
2189 | c = READCHAR; | |
2190 | if (c != '-') | |
2191 | error ("Invalid escape character syntax"); | |
2192 | c = READCHAR; | |
2193 | if (c == '\\') | |
8792be66 | 2194 | c = read_escape (readcharfun, 0); |
7bd279cd RS |
2195 | return c | alt_modifier; |
2196 | ||
2197 | case 's': | |
2198 | c = READCHAR; | |
4d7528d0 | 2199 | if (stringp || c != '-') |
010b7eac RS |
2200 | { |
2201 | UNREAD (c); | |
2202 | return ' '; | |
2203 | } | |
7bd279cd RS |
2204 | c = READCHAR; |
2205 | if (c == '\\') | |
8792be66 | 2206 | c = read_escape (readcharfun, 0); |
7bd279cd | 2207 | return c | super_modifier; |
078e7b4a JB |
2208 | |
2209 | case 'C': | |
2210 | c = READCHAR; | |
2211 | if (c != '-') | |
2212 | error ("Invalid escape character syntax"); | |
2213 | case '^': | |
2214 | c = READCHAR; | |
2215 | if (c == '\\') | |
8792be66 | 2216 | c = read_escape (readcharfun, 0); |
164d590d KH |
2217 | if ((c & ~CHAR_MODIFIER_MASK) == '?') |
2218 | return 0177 | (c & CHAR_MODIFIER_MASK); | |
2219 | else if (! SINGLE_BYTE_CHAR_P ((c & ~CHAR_MODIFIER_MASK))) | |
2220 | return c | ctrl_modifier; | |
f405a585 RS |
2221 | /* ASCII control chars are made from letters (both cases), |
2222 | as well as the non-letters within 0100...0137. */ | |
2223 | else if ((c & 0137) >= 0101 && (c & 0137) <= 0132) | |
2224 | return (c & (037 | ~0177)); | |
2225 | else if ((c & 0177) >= 0100 && (c & 0177) <= 0137) | |
2226 | return (c & (037 | ~0177)); | |
078e7b4a | 2227 | else |
7bd279cd | 2228 | return c | ctrl_modifier; |
078e7b4a JB |
2229 | |
2230 | case '0': | |
2231 | case '1': | |
2232 | case '2': | |
2233 | case '3': | |
2234 | case '4': | |
2235 | case '5': | |
2236 | case '6': | |
2237 | case '7': | |
2238 | /* An octal escape, as in ANSI C. */ | |
2239 | { | |
2240 | register int i = c - '0'; | |
2241 | register int count = 0; | |
2242 | while (++count < 3) | |
2243 | { | |
2244 | if ((c = READCHAR) >= '0' && c <= '7') | |
2245 | { | |
2246 | i *= 8; | |
2247 | i += c - '0'; | |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | UNREAD (c); | |
2252 | break; | |
2253 | } | |
2254 | } | |
177c0ea7 | 2255 | |
8f924df7 | 2256 | if (i >= 0x80 && i < 0x100) |
8792be66 | 2257 | i = BYTE8_TO_CHAR (i); |
078e7b4a JB |
2258 | return i; |
2259 | } | |
2260 | ||
2261 | case 'x': | |
2262 | /* A hex escape, as in ANSI C. */ | |
2263 | { | |
0324f3af | 2264 | unsigned int i = 0; |
1571601b | 2265 | int count = 0; |
078e7b4a JB |
2266 | while (1) |
2267 | { | |
2268 | c = READCHAR; | |
2269 | if (c >= '0' && c <= '9') | |
2270 | { | |
2271 | i *= 16; | |
2272 | i += c - '0'; | |
2273 | } | |
2274 | else if ((c >= 'a' && c <= 'f') | |
2275 | || (c >= 'A' && c <= 'F')) | |
2276 | { | |
2277 | i *= 16; | |
2278 | if (c >= 'a' && c <= 'f') | |
2279 | i += c - 'a' + 10; | |
2280 | else | |
2281 | i += c - 'A' + 10; | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | UNREAD (c); | |
2286 | break; | |
2287 | } | |
0324f3af PE |
2288 | /* Allow hex escapes as large as ?\xfffffff, because some |
2289 | packages use them to denote characters with modifiers. */ | |
2290 | if ((CHAR_META | (CHAR_META - 1)) < i) | |
39019e54 | 2291 | error ("Hex character out of range: \\x%x...", i); |
82cb60d3 | 2292 | count += count < 3; |
078e7b4a | 2293 | } |
f6f79b37 | 2294 | |
1571601b | 2295 | if (count < 3 && i >= 0x80) |
8792be66 | 2296 | return BYTE8_TO_CHAR (i); |
078e7b4a JB |
2297 | return i; |
2298 | } | |
2299 | ||
71b169b8 EZ |
2300 | case 'U': |
2301 | /* Post-Unicode-2.0: Up to eight hex chars. */ | |
2302 | unicode_hex_count = 8; | |
2303 | case 'u': | |
2304 | ||
9735b9ce | 2305 | /* A Unicode escape. We only permit them in strings and characters, |
71b169b8 EZ |
2306 | not arbitrarily in the source code, as in some other languages. */ |
2307 | { | |
a808f22d | 2308 | unsigned int i = 0; |
71b169b8 | 2309 | int count = 0; |
71b169b8 EZ |
2310 | |
2311 | while (++count <= unicode_hex_count) | |
2312 | { | |
2313 | c = READCHAR; | |
48def666 SM |
2314 | /* `isdigit' and `isalpha' may be locale-specific, which we don't |
2315 | want. */ | |
71b169b8 EZ |
2316 | if (c >= '0' && c <= '9') i = (i << 4) + (c - '0'); |
2317 | else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10; | |
2318 | else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10; | |
2319 | else | |
39019e54 | 2320 | error ("Non-hex digit used for Unicode escape"); |
71b169b8 | 2321 | } |
a808f22d KH |
2322 | if (i > 0x10FFFF) |
2323 | error ("Non-Unicode character: 0x%x", i); | |
7ea7f636 | 2324 | return i; |
71b169b8 EZ |
2325 | } |
2326 | ||
078e7b4a JB |
2327 | default: |
2328 | return c; | |
2329 | } | |
2330 | } | |
2331 | ||
a108c10b PE |
2332 | /* Return the digit that CHARACTER stands for in the given BASE. |
2333 | Return -1 if CHARACTER is out of range for BASE, | |
2334 | and -2 if CHARACTER is not valid for any supported BASE. */ | |
b0ab8123 | 2335 | static int |
a108c10b PE |
2336 | digit_to_number (int character, int base) |
2337 | { | |
2338 | int digit; | |
2339 | ||
2340 | if ('0' <= character && character <= '9') | |
2341 | digit = character - '0'; | |
2342 | else if ('a' <= character && character <= 'z') | |
2343 | digit = character - 'a' + 10; | |
2344 | else if ('A' <= character && character <= 'Z') | |
2345 | digit = character - 'A' + 10; | |
2346 | else | |
2347 | return -2; | |
2348 | ||
2349 | return digit < base ? digit : -1; | |
2350 | } | |
2351 | ||
bf5d1a17 GM |
2352 | /* Read an integer in radix RADIX using READCHARFUN to read |
2353 | characters. RADIX must be in the interval [2..36]; if it isn't, a | |
2354 | read error is signaled . Value is the integer read. Signals an | |
2355 | error if encountering invalid read syntax or if RADIX is out of | |
2356 | range. */ | |
2357 | ||
2358 | static Lisp_Object | |
8b9ac8b4 | 2359 | read_integer (Lisp_Object readcharfun, EMACS_INT radix) |
bf5d1a17 | 2360 | { |
8b9ac8b4 PE |
2361 | /* Room for sign, leading 0, other digits, trailing null byte. |
2362 | Also, room for invalid syntax diagnostic. */ | |
2363 | char buf[max (1 + 1 + sizeof (uintmax_t) * CHAR_BIT + 1, | |
2364 | sizeof "integer, radix " + INT_STRLEN_BOUND (EMACS_INT))]; | |
a108c10b PE |
2365 | |
2366 | int valid = -1; /* 1 if valid, 0 if not, -1 if incomplete. */ | |
bf5d1a17 GM |
2367 | |
2368 | if (radix < 2 || radix > 36) | |
a108c10b | 2369 | valid = 0; |
bf5d1a17 GM |
2370 | else |
2371 | { | |
a108c10b PE |
2372 | char *p = buf; |
2373 | int c, digit; | |
bf5d1a17 GM |
2374 | |
2375 | c = READCHAR; | |
a108c10b | 2376 | if (c == '-' || c == '+') |
bf5d1a17 | 2377 | { |
a108c10b | 2378 | *p++ = c; |
bf5d1a17 | 2379 | c = READCHAR; |
bf5d1a17 | 2380 | } |
177c0ea7 | 2381 | |
a108c10b | 2382 | if (c == '0') |
bf5d1a17 | 2383 | { |
a108c10b PE |
2384 | *p++ = c; |
2385 | valid = 1; | |
bf5d1a17 | 2386 | |
a108c10b PE |
2387 | /* Ignore redundant leading zeros, so the buffer doesn't |
2388 | fill up with them. */ | |
2389 | do | |
2390 | c = READCHAR; | |
2391 | while (c == '0'); | |
2392 | } | |
2393 | ||
908589fd | 2394 | while ((digit = digit_to_number (c, radix)) >= -1) |
a108c10b PE |
2395 | { |
2396 | if (digit == -1) | |
2397 | valid = 0; | |
2398 | if (valid < 0) | |
2399 | valid = 1; | |
2400 | ||
2401 | if (p < buf + sizeof buf - 1) | |
2402 | *p++ = c; | |
2403 | else | |
2404 | valid = 0; | |
bf5d1a17 | 2405 | |
bf5d1a17 GM |
2406 | c = READCHAR; |
2407 | } | |
a108c10b | 2408 | |
0a6a104b | 2409 | UNREAD (c); |
a108c10b | 2410 | *p = '\0'; |
bf5d1a17 GM |
2411 | } |
2412 | ||
a108c10b | 2413 | if (! valid) |
bf5d1a17 | 2414 | { |
8b9ac8b4 | 2415 | sprintf (buf, "integer, radix %"pI"d", radix); |
e4d29b33 | 2416 | invalid_syntax (buf); |
bf5d1a17 GM |
2417 | } |
2418 | ||
a108c10b | 2419 | return string_to_number (buf, radix, 0); |
bf5d1a17 GM |
2420 | } |
2421 | ||
2422 | ||
6428369f KH |
2423 | /* If the next token is ')' or ']' or '.', we store that character |
2424 | in *PCH and the return value is not interesting. Else, we store | |
17634846 RS |
2425 | zero in *PCH and we read and return one lisp object. |
2426 | ||
7cded46f | 2427 | FIRST_IN_LIST is true if this is the first element of a list. */ |
17634846 | 2428 | |
078e7b4a | 2429 | static Lisp_Object |
7cded46f | 2430 | read1 (Lisp_Object readcharfun, int *pch, bool first_in_list) |
078e7b4a | 2431 | { |
fce31d69 PE |
2432 | int c; |
2433 | bool uninterned_symbol = 0; | |
2434 | bool multibyte; | |
4ad679f9 | 2435 | |
6428369f | 2436 | *pch = 0; |
078e7b4a JB |
2437 | |
2438 | retry: | |
2439 | ||
1202434b | 2440 | c = READCHAR_REPORT_MULTIBYTE (&multibyte); |
9c97398c GM |
2441 | if (c < 0) |
2442 | end_of_file_error (); | |
078e7b4a JB |
2443 | |
2444 | switch (c) | |
2445 | { | |
2446 | case '(': | |
2447 | return read_list (0, readcharfun); | |
2448 | ||
2449 | case '[': | |
c15cfd1f | 2450 | return read_vector (readcharfun, 0); |
078e7b4a JB |
2451 | |
2452 | case ')': | |
2453 | case ']': | |
078e7b4a | 2454 | { |
6428369f KH |
2455 | *pch = c; |
2456 | return Qnil; | |
078e7b4a JB |
2457 | } |
2458 | ||
2459 | case '#': | |
200f684e | 2460 | c = READCHAR; |
f19a0f5b TZ |
2461 | if (c == 's') |
2462 | { | |
2463 | c = READCHAR; | |
2464 | if (c == '(') | |
2465 | { | |
2466 | /* Accept extended format for hashtables (extensible to | |
2467 | other types), e.g. | |
48def666 | 2468 | #s(hash-table size 2 test equal data (k1 v1 k2 v2)) */ |
f19a0f5b TZ |
2469 | Lisp_Object tmp = read_list (0, readcharfun); |
2470 | Lisp_Object head = CAR_SAFE (tmp); | |
2471 | Lisp_Object data = Qnil; | |
2472 | Lisp_Object val = Qnil; | |
2473 | /* The size is 2 * number of allowed keywords to | |
48def666 | 2474 | make-hash-table. */ |
9735b9ce | 2475 | Lisp_Object params[10]; |
f19a0f5b TZ |
2476 | Lisp_Object ht; |
2477 | Lisp_Object key = Qnil; | |
2478 | int param_count = 0; | |
9735b9ce | 2479 | |
f19a0f5b TZ |
2480 | if (!EQ (head, Qhash_table)) |
2481 | error ("Invalid extended read marker at head of #s list " | |
2482 | "(only hash-table allowed)"); | |
9735b9ce | 2483 | |
f19a0f5b TZ |
2484 | tmp = CDR_SAFE (tmp); |
2485 | ||
48def666 | 2486 | /* This is repetitive but fast and simple. */ |
f19a0f5b | 2487 | params[param_count] = QCsize; |
48def666 | 2488 | params[param_count + 1] = Fplist_get (tmp, Qsize); |
5721b4ed AS |
2489 | if (!NILP (params[param_count + 1])) |
2490 | param_count += 2; | |
f19a0f5b TZ |
2491 | |
2492 | params[param_count] = QCtest; | |
48def666 | 2493 | params[param_count + 1] = Fplist_get (tmp, Qtest); |
5721b4ed AS |
2494 | if (!NILP (params[param_count + 1])) |
2495 | param_count += 2; | |
f19a0f5b TZ |
2496 | |
2497 | params[param_count] = QCweakness; | |
48def666 | 2498 | params[param_count + 1] = Fplist_get (tmp, Qweakness); |
5721b4ed AS |
2499 | if (!NILP (params[param_count + 1])) |
2500 | param_count += 2; | |
f19a0f5b TZ |
2501 | |
2502 | params[param_count] = QCrehash_size; | |
48def666 | 2503 | params[param_count + 1] = Fplist_get (tmp, Qrehash_size); |
5721b4ed AS |
2504 | if (!NILP (params[param_count + 1])) |
2505 | param_count += 2; | |
f19a0f5b TZ |
2506 | |
2507 | params[param_count] = QCrehash_threshold; | |
48def666 | 2508 | params[param_count + 1] = Fplist_get (tmp, Qrehash_threshold); |
5721b4ed AS |
2509 | if (!NILP (params[param_count + 1])) |
2510 | param_count += 2; | |
f19a0f5b | 2511 | |
48def666 | 2512 | /* This is the hashtable data. */ |
f19a0f5b TZ |
2513 | data = Fplist_get (tmp, Qdata); |
2514 | ||
48def666 | 2515 | /* Now use params to make a new hashtable and fill it. */ |
f19a0f5b | 2516 | ht = Fmake_hash_table (param_count, params); |
9735b9ce | 2517 | |
f19a0f5b TZ |
2518 | while (CONSP (data)) |
2519 | { | |
2520 | key = XCAR (data); | |
2521 | data = XCDR (data); | |
2522 | if (!CONSP (data)) | |
2523 | error ("Odd number of elements in hashtable data"); | |
2524 | val = XCAR (data); | |
2525 | data = XCDR (data); | |
2526 | Fputhash (key, val, ht); | |
2527 | } | |
9735b9ce | 2528 | |
f19a0f5b TZ |
2529 | return ht; |
2530 | } | |
5721b4ed | 2531 | UNREAD (c); |
e4d29b33 | 2532 | invalid_syntax ("#"); |
f19a0f5b | 2533 | } |
c2390933 RS |
2534 | if (c == '^') |
2535 | { | |
2536 | c = READCHAR; | |
2537 | if (c == '[') | |
2538 | { | |
2539 | Lisp_Object tmp; | |
c15cfd1f | 2540 | tmp = read_vector (readcharfun, 0); |
77b37c05 | 2541 | if (ASIZE (tmp) < CHAR_TABLE_STANDARD_SLOTS) |
c2390933 | 2542 | error ("Invalid size char-table"); |
985773c9 | 2543 | XSETPVECTYPE (XVECTOR (tmp), PVEC_CHAR_TABLE); |
c2390933 RS |
2544 | return tmp; |
2545 | } | |
3701b5de KH |
2546 | else if (c == '^') |
2547 | { | |
2548 | c = READCHAR; | |
2549 | if (c == '[') | |
2550 | { | |
2551 | Lisp_Object tmp; | |
d311d28c PE |
2552 | int depth; |
2553 | ptrdiff_t size; | |
8f924df7 | 2554 | |
c15cfd1f | 2555 | tmp = read_vector (readcharfun, 0); |
6efdadfd PE |
2556 | size = ASIZE (tmp); |
2557 | if (size == 0) | |
2558 | error ("Invalid size char-table"); | |
d311d28c | 2559 | if (! RANGED_INTEGERP (1, AREF (tmp, 0), 3)) |
1571601b KH |
2560 | error ("Invalid depth in char-table"); |
2561 | depth = XINT (AREF (tmp, 0)); | |
6efdadfd | 2562 | if (chartab_size[depth] != size - 2) |
3701b5de | 2563 | error ("Invalid size char-table"); |
985773c9 | 2564 | XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE); |
3701b5de KH |
2565 | return tmp; |
2566 | } | |
e4d29b33 | 2567 | invalid_syntax ("#^^"); |
3701b5de | 2568 | } |
e4d29b33 | 2569 | invalid_syntax ("#^"); |
c2390933 RS |
2570 | } |
2571 | if (c == '&') | |
2572 | { | |
2573 | Lisp_Object length; | |
2574 | length = read1 (readcharfun, pch, first_in_list); | |
2575 | c = READCHAR; | |
2576 | if (c == '"') | |
2577 | { | |
2578 | Lisp_Object tmp, val; | |
2cf00efc | 2579 | EMACS_INT size_in_chars = bool_vector_bytes (XFASTINT (length)); |
df5b4930 | 2580 | unsigned char *data; |
c2390933 RS |
2581 | |
2582 | UNREAD (c); | |
2583 | tmp = read1 (readcharfun, pch, first_in_list); | |
8792be66 | 2584 | if (STRING_MULTIBYTE (tmp) |
8f924df7 | 2585 | || (size_in_chars != SCHARS (tmp) |
8792be66 KH |
2586 | /* We used to print 1 char too many |
2587 | when the number of bits was a multiple of 8. | |
2588 | Accept such input in case it came from an old | |
2589 | version. */ | |
2590 | && ! (XFASTINT (length) | |
327719ee | 2591 | == (SCHARS (tmp) - 1) * BOOL_VECTOR_BITS_PER_CHAR))) |
e4d29b33 | 2592 | invalid_syntax ("#&..."); |
177c0ea7 | 2593 | |
2cf00efc | 2594 | val = make_uninit_bool_vector (XFASTINT (length)); |
df5b4930 PE |
2595 | data = bool_vector_uchar_data (val); |
2596 | memcpy (data, SDATA (tmp), size_in_chars); | |
67d3b149 | 2597 | /* Clear the extraneous bits in the last byte. */ |
d1ca81d9 | 2598 | if (XINT (length) != size_in_chars * BOOL_VECTOR_BITS_PER_CHAR) |
df5b4930 | 2599 | data[size_in_chars - 1] |
d1ca81d9 | 2600 | &= (1 << (XINT (length) % BOOL_VECTOR_BITS_PER_CHAR)) - 1; |
c2390933 RS |
2601 | return val; |
2602 | } | |
e4d29b33 | 2603 | invalid_syntax ("#&..."); |
c2390933 | 2604 | } |
200f684e | 2605 | if (c == '[') |
876c194c SM |
2606 | { |
2607 | /* Accept compiled functions at read-time so that we don't have to | |
2608 | build them using function calls. */ | |
2609 | Lisp_Object tmp; | |
2610 | tmp = read_vector (readcharfun, 1); | |
ba355de0 BR |
2611 | struct Lisp_Vector* vec = XVECTOR (tmp); |
2612 | if (vec->header.size==0) | |
2613 | invalid_syntax ("Empty byte-code object"); | |
2614 | make_byte_code (vec); | |
3017f87f | 2615 | return tmp; |
876c194c | 2616 | } |
748ef62f RS |
2617 | if (c == '(') |
2618 | { | |
2619 | Lisp_Object tmp; | |
2620 | struct gcpro gcpro1; | |
e28552a4 | 2621 | int ch; |
748ef62f RS |
2622 | |
2623 | /* Read the string itself. */ | |
17634846 | 2624 | tmp = read1 (readcharfun, &ch, 0); |
6428369f | 2625 | if (ch != 0 || !STRINGP (tmp)) |
e4d29b33 | 2626 | invalid_syntax ("#"); |
748ef62f RS |
2627 | GCPRO1 (tmp); |
2628 | /* Read the intervals and their properties. */ | |
2629 | while (1) | |
2630 | { | |
2631 | Lisp_Object beg, end, plist; | |
2632 | ||
17634846 | 2633 | beg = read1 (readcharfun, &ch, 0); |
7ee3bd7b | 2634 | end = plist = Qnil; |
6428369f KH |
2635 | if (ch == ')') |
2636 | break; | |
2637 | if (ch == 0) | |
17634846 | 2638 | end = read1 (readcharfun, &ch, 0); |
6428369f | 2639 | if (ch == 0) |
17634846 | 2640 | plist = read1 (readcharfun, &ch, 0); |
6428369f | 2641 | if (ch) |
e4d29b33 | 2642 | invalid_syntax ("Invalid string property list"); |
748ef62f RS |
2643 | Fset_text_properties (beg, end, plist, tmp); |
2644 | } | |
2645 | UNGCPRO; | |
2646 | return tmp; | |
2647 | } | |
177c0ea7 | 2648 | |
75a65c7e | 2649 | /* #@NUMBER is used to skip NUMBER following bytes. |
20ea2964 RS |
2650 | That's used in .elc files to skip over doc strings |
2651 | and function definitions. */ | |
2652 | if (c == '@') | |
2653 | { | |
bfbbd7e7 | 2654 | enum { extra = 100 }; |
759fd763 | 2655 | ptrdiff_t i, nskip = 0, digits = 0; |
20ea2964 RS |
2656 | |
2657 | /* Read a decimal integer. */ | |
2658 | while ((c = READCHAR) >= 0 | |
2659 | && c >= '0' && c <= '9') | |
2660 | { | |
bfbbd7e7 PE |
2661 | if ((STRING_BYTES_BOUND - extra) / 10 <= nskip) |
2662 | string_overflow (); | |
759fd763 | 2663 | digits++; |
20ea2964 RS |
2664 | nskip *= 10; |
2665 | nskip += c - '0'; | |
759fd763 SM |
2666 | if (digits == 2 && nskip == 0) |
2667 | { /* We've just seen #@00, which means "skip to end". */ | |
2668 | skip_dyn_eof (readcharfun); | |
2669 | return Qnil; | |
2670 | } | |
20ea2964 | 2671 | } |
75a65c7e SM |
2672 | if (nskip > 0) |
2673 | /* We can't use UNREAD here, because in the code below we side-step | |
2674 | READCHAR. Instead, assume the first char after #@NNN occupies | |
2675 | a single byte, which is the case normally since it's just | |
2676 | a space. */ | |
2677 | nskip--; | |
2678 | else | |
2679 | UNREAD (c); | |
7216e43b | 2680 | |
8792be66 | 2681 | if (load_force_doc_strings |
d2e24f92 | 2682 | && (FROM_FILE_P (readcharfun))) |
b2a30870 RS |
2683 | { |
2684 | /* If we are supposed to force doc strings into core right now, | |
2685 | record the last string that we skipped, | |
2686 | and record where in the file it comes from. */ | |
c15cfd1f RS |
2687 | |
2688 | /* But first exchange saved_doc_string | |
2689 | with prev_saved_doc_string, so we save two strings. */ | |
2690 | { | |
2691 | char *temp = saved_doc_string; | |
bfbbd7e7 | 2692 | ptrdiff_t temp_size = saved_doc_string_size; |
68c45bf0 | 2693 | file_offset temp_pos = saved_doc_string_position; |
bfbbd7e7 | 2694 | ptrdiff_t temp_len = saved_doc_string_length; |
c15cfd1f RS |
2695 | |
2696 | saved_doc_string = prev_saved_doc_string; | |
2697 | saved_doc_string_size = prev_saved_doc_string_size; | |
2698 | saved_doc_string_position = prev_saved_doc_string_position; | |
2699 | saved_doc_string_length = prev_saved_doc_string_length; | |
2700 | ||
2701 | prev_saved_doc_string = temp; | |
2702 | prev_saved_doc_string_size = temp_size; | |
2703 | prev_saved_doc_string_position = temp_pos; | |
2704 | prev_saved_doc_string_length = temp_len; | |
2705 | } | |
2706 | ||
b2a30870 RS |
2707 | if (saved_doc_string_size == 0) |
2708 | { | |
23f86fce | 2709 | saved_doc_string = xmalloc (nskip + extra); |
bfbbd7e7 | 2710 | saved_doc_string_size = nskip + extra; |
b2a30870 RS |
2711 | } |
2712 | if (nskip > saved_doc_string_size) | |
2713 | { | |
38182d90 | 2714 | saved_doc_string = xrealloc (saved_doc_string, nskip + extra); |
37d0112b | 2715 | saved_doc_string_size = nskip + extra; |
b2a30870 RS |
2716 | } |
2717 | ||
68c45bf0 | 2718 | saved_doc_string_position = file_tell (instream); |
b2a30870 RS |
2719 | |
2720 | /* Copy that many characters into saved_doc_string. */ | |
75a65c7e | 2721 | block_input (); |
b2a30870 | 2722 | for (i = 0; i < nskip && c >= 0; i++) |
75a65c7e SM |
2723 | saved_doc_string[i] = c = getc (instream); |
2724 | unblock_input (); | |
b2a30870 RS |
2725 | |
2726 | saved_doc_string_length = i; | |
2727 | } | |
2728 | else | |
75a65c7e SM |
2729 | /* Skip that many bytes. */ |
2730 | skip_dyn_bytes (readcharfun, nskip); | |
d49f0c1a | 2731 | |
20ea2964 RS |
2732 | goto retry; |
2733 | } | |
e2518d02 RS |
2734 | if (c == '!') |
2735 | { | |
2736 | /* #! appears at the beginning of an executable file. | |
2737 | Skip the first line. */ | |
225c7a07 | 2738 | while (c != '\n' && c >= 0) |
e2518d02 RS |
2739 | c = READCHAR; |
2740 | goto retry; | |
2741 | } | |
20ea2964 RS |
2742 | if (c == '$') |
2743 | return Vload_file_name; | |
2b6cae0c | 2744 | if (c == '\'') |
6c6f1994 | 2745 | return list2 (Qfunction, read0 (readcharfun)); |
4ad679f9 EN |
2746 | /* #:foo is the uninterned symbol named foo. */ |
2747 | if (c == ':') | |
2748 | { | |
2749 | uninterned_symbol = 1; | |
2750 | c = READCHAR; | |
52968808 | 2751 | if (!(c > 040 |
ed497dd4 | 2752 | && c != 0xa0 /* NBSP */ |
52968808 | 2753 | && (c >= 0200 |
0a6a104b | 2754 | || strchr ("\"';()[]#`,", c) == NULL))) |
52968808 AS |
2755 | { |
2756 | /* No symbol character follows, this is the empty | |
2757 | symbol. */ | |
0a6a104b | 2758 | UNREAD (c); |
4a7edc24 | 2759 | return Fmake_symbol (empty_unibyte_string); |
52968808 AS |
2760 | } |
2761 | goto read_symbol; | |
4ad679f9 | 2762 | } |
9a79b20c AS |
2763 | /* ## is the empty symbol. */ |
2764 | if (c == '#') | |
4a7edc24 | 2765 | return Fintern (empty_unibyte_string, Qnil); |
4ad679f9 EN |
2766 | /* Reader forms that can reuse previously read objects. */ |
2767 | if (c >= '0' && c <= '9') | |
2768 | { | |
8b9ac8b4 | 2769 | EMACS_INT n = 0; |
4ad679f9 | 2770 | Lisp_Object tem; |
2b6cae0c | 2771 | |
4ad679f9 EN |
2772 | /* Read a non-negative integer. */ |
2773 | while (c >= '0' && c <= '9') | |
2774 | { | |
7216e43b PE |
2775 | if (MOST_POSITIVE_FIXNUM / 10 < n |
2776 | || MOST_POSITIVE_FIXNUM < n * 10 + c - '0') | |
8b9ac8b4 PE |
2777 | n = MOST_POSITIVE_FIXNUM + 1; |
2778 | else | |
2779 | n = n * 10 + c - '0'; | |
4ad679f9 EN |
2780 | c = READCHAR; |
2781 | } | |
8b9ac8b4 PE |
2782 | |
2783 | if (n <= MOST_POSITIVE_FIXNUM) | |
4ad679f9 | 2784 | { |
8b9ac8b4 PE |
2785 | if (c == 'r' || c == 'R') |
2786 | return read_integer (readcharfun, n); | |
9e062b6c | 2787 | |
8b9ac8b4 PE |
2788 | if (! NILP (Vread_circle)) |
2789 | { | |
2790 | /* #n=object returns object, but associates it with | |
2791 | n for #n#. */ | |
2792 | if (c == '=') | |
2793 | { | |
48def666 | 2794 | /* Make a placeholder for #n# to use temporarily. */ |
8b9ac8b4 PE |
2795 | Lisp_Object placeholder; |
2796 | Lisp_Object cell; | |
9e062b6c | 2797 | |
8b9ac8b4 PE |
2798 | placeholder = Fcons (Qnil, Qnil); |
2799 | cell = Fcons (make_number (n), placeholder); | |
2800 | read_objects = Fcons (cell, read_objects); | |
9e062b6c | 2801 | |
48def666 | 2802 | /* Read the object itself. */ |
8b9ac8b4 | 2803 | tem = read0 (readcharfun); |
9e062b6c | 2804 | |
48def666 | 2805 | /* Now put it everywhere the placeholder was... */ |
8b9ac8b4 | 2806 | substitute_object_in_subtree (tem, placeholder); |
177c0ea7 | 2807 | |
8b9ac8b4 PE |
2808 | /* ...and #n# will use the real value from now on. */ |
2809 | Fsetcdr (cell, tem); | |
177c0ea7 | 2810 | |
8b9ac8b4 PE |
2811 | return tem; |
2812 | } | |
2813 | ||
2814 | /* #n# returns a previously read object. */ | |
2815 | if (c == '#') | |
2816 | { | |
2817 | tem = Fassq (make_number (n), read_objects); | |
2818 | if (CONSP (tem)) | |
2819 | return XCDR (tem); | |
2820 | } | |
2821 | } | |
2822 | } | |
4ad679f9 EN |
2823 | /* Fall through to error message. */ |
2824 | } | |
bf5d1a17 GM |
2825 | else if (c == 'x' || c == 'X') |
2826 | return read_integer (readcharfun, 16); | |
2827 | else if (c == 'o' || c == 'O') | |
2828 | return read_integer (readcharfun, 8); | |
2829 | else if (c == 'b' || c == 'B') | |
2830 | return read_integer (readcharfun, 2); | |
20ea2964 | 2831 | |
200f684e | 2832 | UNREAD (c); |
e4d29b33 | 2833 | invalid_syntax ("#"); |
078e7b4a JB |
2834 | |
2835 | case ';': | |
2836 | while ((c = READCHAR) >= 0 && c != '\n'); | |
2837 | goto retry; | |
2838 | ||
2839 | case '\'': | |
6c6f1994 | 2840 | return list2 (Qquote, read0 (readcharfun)); |
078e7b4a | 2841 | |
17634846 | 2842 | case '`': |
9a39b306 TO |
2843 | { |
2844 | int next_char = READCHAR; | |
2845 | UNREAD (next_char); | |
2846 | /* Transition from old-style to new-style: | |
2847 | If we see "(`" it used to mean old-style, which usually works | |
2848 | fine because ` should almost never appear in such a position | |
2849 | for new-style. But occasionally we need "(`" to mean new | |
2850 | style, so we try to distinguish the two by the fact that we | |
2851 | can either write "( `foo" or "(` foo", where the first | |
2852 | intends to use new-style whereas the second intends to use | |
2853 | old-style. For Emacs-25, we should completely remove this | |
2854 | first_in_list exception (old-style can still be obtained via | |
2855 | "(\`" anyway). */ | |
bba3e508 | 2856 | if (!new_backquote_flag && first_in_list && next_char == ' ') |
9a39b306 TO |
2857 | { |
2858 | Vold_style_backquotes = Qt; | |
2859 | goto default_label; | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | Lisp_Object value; | |
7cded46f | 2864 | bool saved_new_backquote_flag = new_backquote_flag; |
17634846 | 2865 | |
7cded46f | 2866 | new_backquote_flag = 1; |
9a39b306 | 2867 | value = read0 (readcharfun); |
7cded46f | 2868 | new_backquote_flag = saved_new_backquote_flag; |
17634846 | 2869 | |
6c6f1994 | 2870 | return list2 (Qbackquote, value); |
9a39b306 TO |
2871 | } |
2872 | } | |
17634846 | 2873 | case ',': |
bba3e508 SM |
2874 | { |
2875 | int next_char = READCHAR; | |
2876 | UNREAD (next_char); | |
2877 | /* Transition from old-style to new-style: | |
2878 | It used to be impossible to have a new-style , other than within | |
2879 | a new-style `. This is sufficient when ` and , are used in the | |
2880 | normal way, but ` and , can also appear in args to macros that | |
2881 | will not interpret them in the usual way, in which case , may be | |
2882 | used without any ` anywhere near. | |
2883 | So we now use the same heuristic as for backquote: old-style | |
2884 | unquotes are only recognized when first on a list, and when | |
2885 | followed by a space. | |
333f9019 | 2886 | Because it's more difficult to peek 2 chars ahead, a new-style |
bba3e508 SM |
2887 | ,@ can still not be used outside of a `, unless it's in the middle |
2888 | of a list. */ | |
2889 | if (new_backquote_flag | |
2890 | || !first_in_list | |
2891 | || (next_char != ' ' && next_char != '@')) | |
2892 | { | |
2893 | Lisp_Object comma_type = Qnil; | |
2894 | Lisp_Object value; | |
2895 | int ch = READCHAR; | |
17634846 | 2896 | |
bba3e508 SM |
2897 | if (ch == '@') |
2898 | comma_type = Qcomma_at; | |
2899 | else if (ch == '.') | |
2900 | comma_type = Qcomma_dot; | |
2901 | else | |
2902 | { | |
2903 | if (ch >= 0) UNREAD (ch); | |
2904 | comma_type = Qcomma; | |
2905 | } | |
17634846 | 2906 | |
bba3e508 | 2907 | value = read0 (readcharfun); |
6c6f1994 | 2908 | return list2 (comma_type, value); |
bba3e508 SM |
2909 | } |
2910 | else | |
2911 | { | |
2912 | Vold_style_backquotes = Qt; | |
2913 | goto default_label; | |
2914 | } | |
2915 | } | |
078e7b4a JB |
2916 | case '?': |
2917 | { | |
8792be66 | 2918 | int modifiers; |
df9c2be7 | 2919 | int next_char; |
7cded46f | 2920 | bool ok; |
f6f79b37 | 2921 | |
078e7b4a | 2922 | c = READCHAR; |
9c97398c GM |
2923 | if (c < 0) |
2924 | end_of_file_error (); | |
078e7b4a | 2925 | |
b9284371 KS |
2926 | /* Accept `single space' syntax like (list ? x) where the |
2927 | whitespace character is SPC or TAB. | |
2928 | Other literal whitespace like NL, CR, and FF are not accepted, | |
2929 | as there are well-established escape sequences for these. */ | |
2930 | if (c == ' ' || c == '\t') | |
2931 | return make_number (c); | |
2932 | ||
078e7b4a | 2933 | if (c == '\\') |
8792be66 KH |
2934 | c = read_escape (readcharfun, 0); |
2935 | modifiers = c & CHAR_MODIFIER_MASK; | |
2936 | c &= ~CHAR_MODIFIER_MASK; | |
2937 | if (CHAR_BYTE8_P (c)) | |
2938 | c = CHAR_TO_BYTE8 (c); | |
2939 | c |= modifiers; | |
078e7b4a | 2940 | |
df9c2be7 | 2941 | next_char = READCHAR; |
bba3e508 SM |
2942 | ok = (next_char <= 040 |
2943 | || (next_char < 0200 | |
0a6a104b | 2944 | && strchr ("\"';()[]#?`,.", next_char) != NULL)); |
df9c2be7 | 2945 | UNREAD (next_char); |
336d4a9c KS |
2946 | if (ok) |
2947 | return make_number (c); | |
37cd4238 | 2948 | |
e4d29b33 | 2949 | invalid_syntax ("?"); |
078e7b4a JB |
2950 | } |
2951 | ||
00a9a935 | 2952 | case '"': |
078e7b4a | 2953 | { |
a742d646 GM |
2954 | char *p = read_buffer; |
2955 | char *end = read_buffer + read_buffer_size; | |
7cded46f PE |
2956 | int ch; |
2957 | /* True if we saw an escape sequence specifying | |
1571601b | 2958 | a multibyte character. */ |
7cded46f PE |
2959 | bool force_multibyte = 0; |
2960 | /* True if we saw an escape sequence specifying | |
e7fc914b | 2961 | a single-byte character. */ |
7cded46f PE |
2962 | bool force_singlebyte = 0; |
2963 | bool cancel = 0; | |
82cb60d3 | 2964 | ptrdiff_t nchars = 0; |
078e7b4a | 2965 | |
0902fe45 PE |
2966 | while ((ch = READCHAR) >= 0 |
2967 | && ch != '\"') | |
078e7b4a | 2968 | { |
449fea39 | 2969 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 2970 | { |
82cb60d3 | 2971 | ptrdiff_t offset = p - read_buffer; |
7216e43b | 2972 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
20270765 | 2973 | memory_full (SIZE_MAX); |
38182d90 | 2974 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 2975 | read_buffer_size *= 2; |
5d65df0d | 2976 | p = read_buffer + offset; |
078e7b4a JB |
2977 | end = read_buffer + read_buffer_size; |
2978 | } | |
bed23cb2 | 2979 | |
0902fe45 | 2980 | if (ch == '\\') |
03e88613 | 2981 | { |
1571601b | 2982 | int modifiers; |
f6f79b37 | 2983 | |
0902fe45 | 2984 | ch = read_escape (readcharfun, 1); |
bed23cb2 | 2985 | |
48def666 | 2986 | /* CH is -1 if \ newline has just been seen. */ |
0902fe45 | 2987 | if (ch == -1) |
03e88613 | 2988 | { |
bed23cb2 RS |
2989 | if (p == read_buffer) |
2990 | cancel = 1; | |
03e88613 RS |
2991 | continue; |
2992 | } | |
bed23cb2 | 2993 | |
0902fe45 PE |
2994 | modifiers = ch & CHAR_MODIFIER_MASK; |
2995 | ch = ch & ~CHAR_MODIFIER_MASK; | |
1571601b | 2996 | |
0902fe45 | 2997 | if (CHAR_BYTE8_P (ch)) |
e7fc914b | 2998 | force_singlebyte = 1; |
0902fe45 | 2999 | else if (! ASCII_CHAR_P (ch)) |
f6f79b37 | 3000 | force_multibyte = 1; |
48def666 | 3001 | else /* I.e. ASCII_CHAR_P (ch). */ |
1571601b KH |
3002 | { |
3003 | /* Allow `\C- ' and `\C-?'. */ | |
3004 | if (modifiers == CHAR_CTL) | |
3005 | { | |
0902fe45 PE |
3006 | if (ch == ' ') |
3007 | ch = 0, modifiers = 0; | |
3008 | else if (ch == '?') | |
3009 | ch = 127, modifiers = 0; | |
1571601b KH |
3010 | } |
3011 | if (modifiers & CHAR_SHIFT) | |
3012 | { | |
3013 | /* Shift modifier is valid only with [A-Za-z]. */ | |
0902fe45 | 3014 | if (ch >= 'A' && ch <= 'Z') |
1571601b | 3015 | modifiers &= ~CHAR_SHIFT; |
0902fe45 PE |
3016 | else if (ch >= 'a' && ch <= 'z') |
3017 | ch -= ('a' - 'A'), modifiers &= ~CHAR_SHIFT; | |
1571601b KH |
3018 | } |
3019 | ||
3020 | if (modifiers & CHAR_META) | |
3021 | { | |
3022 | /* Move the meta bit to the right place for a | |
3023 | string. */ | |
3024 | modifiers &= ~CHAR_META; | |
0902fe45 | 3025 | ch = BYTE8_TO_CHAR (ch | 0x80); |
1571601b KH |
3026 | force_singlebyte = 1; |
3027 | } | |
3028 | } | |
5150eeec | 3029 | |
1571601b KH |
3030 | /* Any modifiers remaining are invalid. */ |
3031 | if (modifiers) | |
3032 | error ("Invalid modifier in string"); | |
0902fe45 | 3033 | p += CHAR_STRING (ch, (unsigned char *) p); |
078e7b4a | 3034 | } |
8792be66 | 3035 | else |
5150eeec | 3036 | { |
0902fe45 PE |
3037 | p += CHAR_STRING (ch, (unsigned char *) p); |
3038 | if (CHAR_BYTE8_P (ch)) | |
988f7a0c | 3039 | force_singlebyte = 1; |
0902fe45 | 3040 | else if (! ASCII_CHAR_P (ch)) |
988f7a0c | 3041 | force_multibyte = 1; |
f943104a | 3042 | } |
5150eeec | 3043 | nchars++; |
078e7b4a | 3044 | } |
5150eeec | 3045 | |
0902fe45 | 3046 | if (ch < 0) |
9c97398c | 3047 | end_of_file_error (); |
078e7b4a JB |
3048 | |
3049 | /* If purifying, and string starts with \ newline, | |
3050 | return zero instead. This is for doc strings | |
61b108cc | 3051 | that we are really going to find in etc/DOC.nn.nn. */ |
265a9e55 | 3052 | if (!NILP (Vpurify_flag) && NILP (Vdoc_file_name) && cancel) |
078e7b4a JB |
3053 | return make_number (0); |
3054 | ||
4cfd81f6 | 3055 | if (! force_multibyte && force_singlebyte) |
a742d646 | 3056 | { |
4cfd81f6 PE |
3057 | /* READ_BUFFER contains raw 8-bit bytes and no multibyte |
3058 | forms. Convert it to unibyte. */ | |
4a25e32a PE |
3059 | nchars = str_as_unibyte ((unsigned char *) read_buffer, |
3060 | p - read_buffer); | |
1571601b | 3061 | p = read_buffer + nchars; |
a742d646 | 3062 | } |
e7fc914b | 3063 | |
491f16a2 | 3064 | return make_specified_string (read_buffer, nchars, p - read_buffer, |
1571601b KH |
3065 | (force_multibyte |
3066 | || (p - read_buffer != nchars))); | |
078e7b4a JB |
3067 | } |
3068 | ||
109d300c JB |
3069 | case '.': |
3070 | { | |
109d300c JB |
3071 | int next_char = READCHAR; |
3072 | UNREAD (next_char); | |
3073 | ||
035eec48 | 3074 | if (next_char <= 040 |
e613ea97 | 3075 | || (next_char < 0200 |
0a6a104b | 3076 | && strchr ("\"';([#?`,", next_char) != NULL)) |
109d300c | 3077 | { |
6428369f KH |
3078 | *pch = c; |
3079 | return Qnil; | |
109d300c JB |
3080 | } |
3081 | ||
3082 | /* Otherwise, we fall through! Note that the atom-reading loop | |
3083 | below will now loop at least once, assuring that we will not | |
3084 | try to UNREAD two characters in a row. */ | |
3085 | } | |
078e7b4a | 3086 | default: |
17634846 | 3087 | default_label: |
88852d45 | 3088 | if (c <= 040) goto retry; |
ed497dd4 | 3089 | if (c == 0xa0) /* NBSP */ |
adef3de7 | 3090 | goto retry; |
52968808 AS |
3091 | |
3092 | read_symbol: | |
078e7b4a | 3093 | { |
38404229 | 3094 | char *p = read_buffer; |
7cded46f | 3095 | bool quoted = 0; |
46cfea45 | 3096 | EMACS_INT start_position = readchar_count - 1; |
078e7b4a JB |
3097 | |
3098 | { | |
38404229 | 3099 | char *end = read_buffer + read_buffer_size; |
078e7b4a | 3100 | |
ef1b0ba7 | 3101 | do |
078e7b4a | 3102 | { |
449fea39 | 3103 | if (end - p < MAX_MULTIBYTE_LENGTH) |
078e7b4a | 3104 | { |
82cb60d3 | 3105 | ptrdiff_t offset = p - read_buffer; |
7216e43b | 3106 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
20270765 | 3107 | memory_full (SIZE_MAX); |
38182d90 | 3108 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 3109 | read_buffer_size *= 2; |
5d65df0d | 3110 | p = read_buffer + offset; |
078e7b4a JB |
3111 | end = read_buffer + read_buffer_size; |
3112 | } | |
177c0ea7 | 3113 | |
078e7b4a | 3114 | if (c == '\\') |
481c6336 RS |
3115 | { |
3116 | c = READCHAR; | |
4ab11c09 GM |
3117 | if (c == -1) |
3118 | end_of_file_error (); | |
481c6336 RS |
3119 | quoted = 1; |
3120 | } | |
6f7f43d5 | 3121 | |
1202434b | 3122 | if (multibyte) |
4a25e32a | 3123 | p += CHAR_STRING (c, (unsigned char *) p); |
1202434b KH |
3124 | else |
3125 | *p++ = c; | |
078e7b4a | 3126 | c = READCHAR; |
0a6a104b AS |
3127 | } |
3128 | while (c > 040 | |
ed497dd4 | 3129 | && c != 0xa0 /* NBSP */ |
0a6a104b AS |
3130 | && (c >= 0200 |
3131 | || strchr ("\"';()[]#`,", c) == NULL)); | |
078e7b4a JB |
3132 | |
3133 | if (p == end) | |
3134 | { | |
82cb60d3 | 3135 | ptrdiff_t offset = p - read_buffer; |
7216e43b | 3136 | if (min (PTRDIFF_MAX, SIZE_MAX) / 2 < read_buffer_size) |
20270765 | 3137 | memory_full (SIZE_MAX); |
38182d90 | 3138 | read_buffer = xrealloc (read_buffer, read_buffer_size * 2); |
37d0112b | 3139 | read_buffer_size *= 2; |
5d65df0d GM |
3140 | p = read_buffer + offset; |
3141 | end = read_buffer + read_buffer_size; | |
078e7b4a JB |
3142 | } |
3143 | *p = 0; | |
0a6a104b | 3144 | UNREAD (c); |
078e7b4a JB |
3145 | } |
3146 | ||
4ad679f9 | 3147 | if (!quoted && !uninterned_symbol) |
481c6336 | 3148 | { |
452f4150 PE |
3149 | Lisp_Object result = string_to_number (read_buffer, 10, 0); |
3150 | if (! NILP (result)) | |
8b9587d7 | 3151 | return result; |
481c6336 | 3152 | } |
abb13b09 | 3153 | { |
e93abe3d | 3154 | Lisp_Object name, result; |
d311d28c PE |
3155 | ptrdiff_t nbytes = p - read_buffer; |
3156 | ptrdiff_t nchars | |
4a25e32a PE |
3157 | = (multibyte |
3158 | ? multibyte_chars_in_text ((unsigned char *) read_buffer, | |
3159 | nbytes) | |
e93abe3d KH |
3160 | : nbytes); |
3161 | ||
61b108cc SM |
3162 | name = ((uninterned_symbol && ! NILP (Vpurify_flag) |
3163 | ? make_pure_string : make_specified_string) | |
3164 | (read_buffer, nchars, nbytes, multibyte)); | |
e93abe3d KH |
3165 | result = (uninterned_symbol ? Fmake_symbol (name) |
3166 | : Fintern (name, Qnil)); | |
1202434b | 3167 | |
abb13b09 CW |
3168 | if (EQ (Vread_with_symbol_positions, Qt) |
3169 | || EQ (Vread_with_symbol_positions, readcharfun)) | |
61b108cc SM |
3170 | Vread_symbol_positions_list |
3171 | = Fcons (Fcons (result, make_number (start_position)), | |
3172 | Vread_symbol_positions_list); | |
abb13b09 CW |
3173 | return result; |
3174 | } | |
078e7b4a JB |
3175 | } |
3176 | } | |
3177 | } | |
3178 | \f | |
9e062b6c | 3179 | |
48def666 | 3180 | /* List of nodes we've seen during substitute_object_in_subtree. */ |
9e062b6c RS |
3181 | static Lisp_Object seen_list; |
3182 | ||
3183 | static void | |
971de7fb | 3184 | substitute_object_in_subtree (Lisp_Object object, Lisp_Object placeholder) |
9e062b6c RS |
3185 | { |
3186 | Lisp_Object check_object; | |
3187 | ||
48def666 | 3188 | /* We haven't seen any objects when we start. */ |
9e062b6c RS |
3189 | seen_list = Qnil; |
3190 | ||
48def666 | 3191 | /* Make all the substitutions. */ |
9e062b6c RS |
3192 | check_object |
3193 | = substitute_object_recurse (object, placeholder, object); | |
177c0ea7 | 3194 | |
48def666 | 3195 | /* Clear seen_list because we're done with it. */ |
9e062b6c RS |
3196 | seen_list = Qnil; |
3197 | ||
3198 | /* The returned object here is expected to always eq the | |
48def666 | 3199 | original. */ |
9e062b6c RS |
3200 | if (!EQ (check_object, object)) |
3201 | error ("Unexpected mutation error in reader"); | |
3202 | } | |
3203 | ||
48def666 | 3204 | /* Feval doesn't get called from here, so no gc protection is needed. */ |
7a3d90dc SM |
3205 | #define SUBSTITUTE(get_val, set_val) \ |
3206 | do { \ | |
3207 | Lisp_Object old_value = get_val; \ | |
3208 | Lisp_Object true_value \ | |
3209 | = substitute_object_recurse (object, placeholder, \ | |
3210 | old_value); \ | |
3211 | \ | |
3212 | if (!EQ (old_value, true_value)) \ | |
3213 | { \ | |
3214 | set_val; \ | |
3215 | } \ | |
3216 | } while (0) | |
9e062b6c RS |
3217 | |
3218 | static Lisp_Object | |
971de7fb | 3219 | substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Object subtree) |
9e062b6c | 3220 | { |
48def666 | 3221 | /* If we find the placeholder, return the target object. */ |
9e062b6c RS |
3222 | if (EQ (placeholder, subtree)) |
3223 | return object; | |
3224 | ||
48def666 | 3225 | /* If we've been to this node before, don't explore it again. */ |
9e062b6c RS |
3226 | if (!EQ (Qnil, Fmemq (subtree, seen_list))) |
3227 | return subtree; | |
3228 | ||
3229 | /* If this node can be the entry point to a cycle, remember that | |
3230 | we've seen it. It can only be such an entry point if it was made | |
3231 | by #n=, which means that we can find it as a value in | |
3232 | read_objects. */ | |
3233 | if (!EQ (Qnil, Frassq (subtree, read_objects))) | |
3234 | seen_list = Fcons (subtree, seen_list); | |
177c0ea7 | 3235 | |
9e062b6c RS |
3236 | /* Recurse according to subtree's type. |
3237 | Every branch must return a Lisp_Object. */ | |
3238 | switch (XTYPE (subtree)) | |
3239 | { | |
3240 | case Lisp_Vectorlike: | |
3241 | { | |
82cb60d3 | 3242 | ptrdiff_t i, length = 0; |
7a3d90dc SM |
3243 | if (BOOL_VECTOR_P (subtree)) |
3244 | return subtree; /* No sub-objects anyway. */ | |
3245 | else if (CHAR_TABLE_P (subtree) || SUB_CHAR_TABLE_P (subtree) | |
068f9124 | 3246 | || COMPILEDP (subtree) || HASH_TABLE_P (subtree)) |
7a3d90dc SM |
3247 | length = ASIZE (subtree) & PSEUDOVECTOR_SIZE_MASK; |
3248 | else if (VECTORP (subtree)) | |
3249 | length = ASIZE (subtree); | |
3250 | else | |
3251 | /* An unknown pseudovector may contain non-Lisp fields, so we | |
3252 | can't just blindly traverse all its fields. We used to call | |
04bf5b65 | 3253 | `Flength' which signaled `sequencep', so I just preserved this |
7a3d90dc SM |
3254 | behavior. */ |
3255 | wrong_type_argument (Qsequencep, subtree); | |
3256 | ||
9e062b6c | 3257 | for (i = 0; i < length; i++) |
7a3d90dc SM |
3258 | SUBSTITUTE (AREF (subtree, i), |
3259 | ASET (subtree, i, true_value)); | |
9e062b6c RS |
3260 | return subtree; |
3261 | } | |
3262 | ||
3263 | case Lisp_Cons: | |
3264 | { | |
7a3d90dc SM |
3265 | SUBSTITUTE (XCAR (subtree), |
3266 | XSETCAR (subtree, true_value)); | |
3267 | SUBSTITUTE (XCDR (subtree), | |
3268 | XSETCDR (subtree, true_value)); | |
9e062b6c RS |
3269 | return subtree; |
3270 | } | |
3271 | ||
9e062b6c RS |
3272 | case Lisp_String: |
3273 | { | |
3274 | /* Check for text properties in each interval. | |
48def666 | 3275 | substitute_in_interval contains part of the logic. */ |
9e062b6c | 3276 | |
0c94c8d6 PE |
3277 | INTERVAL root_interval = string_intervals (subtree); |
3278 | Lisp_Object arg = Fcons (object, placeholder); | |
177c0ea7 | 3279 | |
0d74b006 SM |
3280 | traverse_intervals_noorder (root_interval, |
3281 | &substitute_in_interval, arg); | |
9e062b6c RS |
3282 | |
3283 | return subtree; | |
3284 | } | |
9e062b6c | 3285 | |
48def666 | 3286 | /* Other types don't recurse any further. */ |
9e062b6c RS |
3287 | default: |
3288 | return subtree; | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | /* Helper function for substitute_object_recurse. */ | |
3293 | static void | |
971de7fb | 3294 | substitute_in_interval (INTERVAL interval, Lisp_Object arg) |
9e062b6c RS |
3295 | { |
3296 | Lisp_Object object = Fcar (arg); | |
3297 | Lisp_Object placeholder = Fcdr (arg); | |
3298 | ||
0c94c8d6 | 3299 | SUBSTITUTE (interval->plist, set_interval_plist (interval, true_value)); |
9e062b6c RS |
3300 | } |
3301 | ||
3302 | \f | |
078e7b4a JB |
3303 | #define LEAD_INT 1 |
3304 | #define DOT_CHAR 2 | |
3305 | #define TRAIL_INT 4 | |
452f4150 | 3306 | #define E_EXP 16 |
078e7b4a | 3307 | |
8b9587d7 | 3308 | |
452f4150 PE |
3309 | /* Convert STRING to a number, assuming base BASE. Return a fixnum if CP has |
3310 | integer syntax and fits in a fixnum, else return the nearest float if CP has | |
3311 | either floating point or integer syntax and BASE is 10, else return nil. If | |
7cded46f | 3312 | IGNORE_TRAILING, consider just the longest prefix of CP that has |
452f4150 PE |
3313 | valid floating point syntax. Signal an overflow if BASE is not 10 and the |
3314 | number has integer syntax but does not fit. */ | |
8b9587d7 PE |
3315 | |
3316 | Lisp_Object | |
7cded46f | 3317 | string_to_number (char const *string, int base, bool ignore_trailing) |
078e7b4a | 3318 | { |
a8fe7202 | 3319 | int state; |
452f4150 PE |
3320 | char const *cp = string; |
3321 | int leading_digit; | |
7cded46f | 3322 | bool float_syntax = 0; |
452f4150 | 3323 | double value = 0; |
d8578e58 | 3324 | |
8b9587d7 PE |
3325 | /* Compute NaN and infinities using a variable, to cope with compilers that |
3326 | think they are smarter than we are. */ | |
3327 | double zero = 0; | |
3328 | ||
3329 | /* Negate the value ourselves. This treats 0, NaNs, and infinity properly on | |
3330 | IEEE floating point hosts, and works around a formerly-common bug where | |
3331 | atof ("-0.0") drops the sign. */ | |
7cded46f | 3332 | bool negative = *cp == '-'; |
8b9587d7 | 3333 | |
7cded46f | 3334 | bool signedp = negative || *cp == '+'; |
452f4150 | 3335 | cp += signedp; |
8b9587d7 | 3336 | |
078e7b4a | 3337 | state = 0; |
078e7b4a | 3338 | |
452f4150 | 3339 | leading_digit = digit_to_number (*cp, base); |
908589fd | 3340 | if (leading_digit >= 0) |
078e7b4a JB |
3341 | { |
3342 | state |= LEAD_INT; | |
452f4150 PE |
3343 | do |
3344 | ++cp; | |
908589fd | 3345 | while (digit_to_number (*cp, base) >= 0); |
078e7b4a JB |
3346 | } |
3347 | if (*cp == '.') | |
3348 | { | |
3349 | state |= DOT_CHAR; | |
3350 | cp++; | |
3351 | } | |
078e7b4a | 3352 | |
452f4150 | 3353 | if (base == 10) |
eb659c41 | 3354 | { |
452f4150 PE |
3355 | if ('0' <= *cp && *cp <= '9') |
3356 | { | |
3357 | state |= TRAIL_INT; | |
3358 | do | |
3359 | cp++; | |
3360 | while ('0' <= *cp && *cp <= '9'); | |
3361 | } | |
3362 | if (*cp == 'e' || *cp == 'E') | |
3363 | { | |
3364 | char const *ecp = cp; | |
3365 | cp++; | |
3366 | if (*cp == '+' || *cp == '-') | |
3367 | cp++; | |
3368 | if ('0' <= *cp && *cp <= '9') | |
3369 | { | |
3370 | state |= E_EXP; | |
3371 | do | |
3372 | cp++; | |
3373 | while ('0' <= *cp && *cp <= '9'); | |
3374 | } | |
3375 | else if (cp[-1] == '+' | |
3376 | && cp[0] == 'I' && cp[1] == 'N' && cp[2] == 'F') | |
3377 | { | |
3378 | state |= E_EXP; | |
3379 | cp += 3; | |
3380 | value = 1.0 / zero; | |
3381 | } | |
3382 | else if (cp[-1] == '+' | |
3383 | && cp[0] == 'N' && cp[1] == 'a' && cp[2] == 'N') | |
3384 | { | |
3385 | state |= E_EXP; | |
3386 | cp += 3; | |
3387 | value = zero / zero; | |
3388 | ||
3389 | /* If that made a "negative" NaN, negate it. */ | |
3390 | { | |
3391 | int i; | |
3392 | union { double d; char c[sizeof (double)]; } | |
3393 | u_data, u_minus_zero; | |
3394 | u_data.d = value; | |
3395 | u_minus_zero.d = -0.0; | |
3396 | for (i = 0; i < sizeof (double); i++) | |
3397 | if (u_data.c[i] & u_minus_zero.c[i]) | |
3398 | { | |
3399 | value = -value; | |
3400 | break; | |
3401 | } | |
3402 | } | |
3403 | /* Now VALUE is a positive NaN. */ | |
3404 | } | |
3405 | else | |
3406 | cp = ecp; | |
3407 | } | |
3408 | ||
3409 | float_syntax = ((state & (DOT_CHAR|TRAIL_INT)) == (DOT_CHAR|TRAIL_INT) | |
3410 | || state == (LEAD_INT|E_EXP)); | |
eb659c41 | 3411 | } |
8b9587d7 | 3412 | |
452f4150 PE |
3413 | /* Return nil if the number uses invalid syntax. If IGNORE_TRAILING, accept |
3414 | any prefix that matches. Otherwise, the entire string must match. */ | |
3415 | if (! (ignore_trailing | |
3416 | ? ((state & LEAD_INT) != 0 || float_syntax) | |
3417 | : (!*cp && ((state & ~DOT_CHAR) == LEAD_INT || float_syntax)))) | |
3418 | return Qnil; | |
8b9587d7 | 3419 | |
d78050d6 PE |
3420 | /* If the number uses integer and not float syntax, and is in C-language |
3421 | range, use its value, preferably as a fixnum. */ | |
908589fd | 3422 | if (leading_digit >= 0 && ! float_syntax) |
452f4150 | 3423 | { |
d78050d6 PE |
3424 | uintmax_t n; |
3425 | ||
3426 | /* Fast special case for single-digit integers. This also avoids a | |
7cded46f | 3427 | glitch when BASE is 16 and IGNORE_TRAILING, because in that |
d78050d6 PE |
3428 | case some versions of strtoumax accept numbers like "0x1" that Emacs |
3429 | does not allow. */ | |
3430 | if (digit_to_number (string[signedp + 1], base) < 0) | |
3431 | return make_number (negative ? -leading_digit : leading_digit); | |
3432 | ||
3433 | errno = 0; | |
3434 | n = strtoumax (string + signedp, NULL, base); | |
3435 | if (errno == ERANGE) | |
452f4150 | 3436 | { |
d78050d6 PE |
3437 | /* Unfortunately there's no simple and accurate way to convert |
3438 | non-base-10 numbers that are out of C-language range. */ | |
3439 | if (base != 10) | |
f14ed477 | 3440 | xsignal1 (Qoverflow_error, build_string (string)); |
452f4150 | 3441 | } |
d78050d6 PE |
3442 | else if (n <= (negative ? -MOST_NEGATIVE_FIXNUM : MOST_POSITIVE_FIXNUM)) |
3443 | { | |
3444 | EMACS_INT signed_n = n; | |
3445 | return make_number (negative ? -signed_n : signed_n); | |
3446 | } | |
3447 | else | |
3448 | value = n; | |
452f4150 | 3449 | } |
8b9587d7 | 3450 | |
452f4150 PE |
3451 | /* Either the number uses float syntax, or it does not fit into a fixnum. |
3452 | Convert it from string to floating point, unless the value is already | |
d78050d6 PE |
3453 | known because it is an infinity, a NAN, or its absolute value fits in |
3454 | uintmax_t. */ | |
8b9587d7 | 3455 | if (! value) |
452f4150 PE |
3456 | value = atof (string + signedp); |
3457 | ||
d78050d6 | 3458 | return make_float (negative ? -value : value); |
078e7b4a | 3459 | } |
cc94f3b2 | 3460 | |
078e7b4a JB |
3461 | \f |
3462 | static Lisp_Object | |
7cded46f | 3463 | read_vector (Lisp_Object readcharfun, bool bytecodeflag) |
078e7b4a | 3464 | { |
82cb60d3 | 3465 | ptrdiff_t i, size; |
7cded46f PE |
3466 | Lisp_Object *ptr; |
3467 | Lisp_Object tem, item, vector; | |
3468 | struct Lisp_Cons *otem; | |
078e7b4a JB |
3469 | Lisp_Object len; |
3470 | ||
3471 | tem = read_list (1, readcharfun); | |
3472 | len = Flength (tem); | |
48def666 | 3473 | vector = Fmake_vector (len, Qnil); |
078e7b4a | 3474 | |
77b37c05 | 3475 | size = ASIZE (vector); |
91f2d272 | 3476 | ptr = XVECTOR (vector)->contents; |
078e7b4a JB |
3477 | for (i = 0; i < size; i++) |
3478 | { | |
c15cfd1f RS |
3479 | item = Fcar (tem); |
3480 | /* If `load-force-doc-strings' is t when reading a lazily-loaded | |
3481 | bytecode object, the docstring containing the bytecode and | |
3482 | constants values must be treated as unibyte and passed to | |
3483 | Fread, to get the actual bytecode string and constants vector. */ | |
876c194c | 3484 | if (bytecodeflag && load_force_doc_strings) |
c15cfd1f RS |
3485 | { |
3486 | if (i == COMPILED_BYTECODE) | |
3487 | { | |
3488 | if (!STRINGP (item)) | |
6fa2b890 | 3489 | error ("Invalid byte code"); |
c15cfd1f RS |
3490 | |
3491 | /* Delay handling the bytecode slot until we know whether | |
3492 | it is lazily-loaded (we can tell by whether the | |
3493 | constants slot is nil). */ | |
086ca913 | 3494 | ASET (vector, COMPILED_CONSTANTS, item); |
c15cfd1f RS |
3495 | item = Qnil; |
3496 | } | |
3497 | else if (i == COMPILED_CONSTANTS) | |
3498 | { | |
3499 | Lisp_Object bytestr = ptr[COMPILED_CONSTANTS]; | |
3500 | ||
3501 | if (NILP (item)) | |
3502 | { | |
3503 | /* Coerce string to unibyte (like string-as-unibyte, | |
3504 | but without generating extra garbage and | |
3505 | guaranteeing no change in the contents). */ | |
bee91904 | 3506 | STRING_SET_CHARS (bytestr, SBYTES (bytestr)); |
d5db4077 | 3507 | STRING_SET_UNIBYTE (bytestr); |
c15cfd1f | 3508 | |
8792be66 | 3509 | item = Fread (Fcons (bytestr, readcharfun)); |
c15cfd1f | 3510 | if (!CONSP (item)) |
6fa2b890 | 3511 | error ("Invalid byte code"); |
c15cfd1f RS |
3512 | |
3513 | otem = XCONS (item); | |
c1d497be KR |
3514 | bytestr = XCAR (item); |
3515 | item = XCDR (item); | |
c15cfd1f RS |
3516 | free_cons (otem); |
3517 | } | |
3518 | ||
3519 | /* Now handle the bytecode slot. */ | |
086ca913 | 3520 | ASET (vector, COMPILED_BYTECODE, bytestr); |
c15cfd1f | 3521 | } |
8792be66 KH |
3522 | else if (i == COMPILED_DOC_STRING |
3523 | && STRINGP (item) | |
3524 | && ! STRING_MULTIBYTE (item)) | |
3525 | { | |
3526 | if (EQ (readcharfun, Qget_emacs_mule_file_char)) | |
3527 | item = Fdecode_coding_string (item, Qemacs_mule, Qnil, Qnil); | |
3528 | else | |
3529 | item = Fstring_as_multibyte (item); | |
3530 | } | |
c15cfd1f | 3531 | } |
086ca913 | 3532 | ASET (vector, i, item); |
078e7b4a JB |
3533 | otem = XCONS (tem); |
3534 | tem = Fcdr (tem); | |
3535 | free_cons (otem); | |
3536 | } | |
3537 | return vector; | |
3538 | } | |
177c0ea7 | 3539 | |
7cded46f | 3540 | /* FLAG means check for ] to terminate rather than ) and . */ |
078e7b4a JB |
3541 | |
3542 | static Lisp_Object | |
7cded46f | 3543 | read_list (bool flag, Lisp_Object readcharfun) |
078e7b4a | 3544 | { |
078e7b4a | 3545 | Lisp_Object val, tail; |
7cded46f | 3546 | Lisp_Object elt, tem; |
078e7b4a | 3547 | struct gcpro gcpro1, gcpro2; |
821d417e | 3548 | /* 0 is the normal case. |
b2a30870 | 3549 | 1 means this list is a doc reference; replace it with the number 0. |
177c0ea7 | 3550 | 2 means this list is a doc reference; replace it with the doc string. */ |
821d417e | 3551 | int doc_reference = 0; |
078e7b4a | 3552 | |
17634846 | 3553 | /* Initialize this to 1 if we are reading a list. */ |
7cded46f | 3554 | bool first_in_list = flag <= 0; |
17634846 | 3555 | |
078e7b4a JB |
3556 | val = Qnil; |
3557 | tail = Qnil; | |
3558 | ||
3559 | while (1) | |
3560 | { | |
e28552a4 | 3561 | int ch; |
078e7b4a | 3562 | GCPRO2 (val, tail); |
17634846 | 3563 | elt = read1 (readcharfun, &ch, first_in_list); |
078e7b4a | 3564 | UNGCPRO; |
20ea2964 | 3565 | |
17634846 RS |
3566 | first_in_list = 0; |
3567 | ||
821d417e | 3568 | /* While building, if the list starts with #$, treat it specially. */ |
20ea2964 | 3569 | if (EQ (elt, Vload_file_name) |
d49f0c1a | 3570 | && ! NILP (elt) |
821d417e RS |
3571 | && !NILP (Vpurify_flag)) |
3572 | { | |
3573 | if (NILP (Vdoc_file_name)) | |
3574 | /* We have not yet called Snarf-documentation, so assume | |
6e911150 | 3575 | this file is described in the DOC file |
821d417e RS |
3576 | and Snarf-documentation will fill in the right value later. |
3577 | For now, replace the whole list with 0. */ | |
3578 | doc_reference = 1; | |
3579 | else | |
3580 | /* We have already called Snarf-documentation, so make a relative | |
3581 | file name for this file, so it can be found properly | |
3582 | in the installed Lisp directory. | |
3583 | We don't use Fexpand_file_name because that would make | |
3584 | the directory absolute now. */ | |
3585 | elt = concat2 (build_string ("../lisp/"), | |
61b108cc | 3586 | Ffile_name_nondirectory (elt)); |
821d417e | 3587 | } |
b2a30870 | 3588 | else if (EQ (elt, Vload_file_name) |
d49f0c1a | 3589 | && ! NILP (elt) |
b2a30870 RS |
3590 | && load_force_doc_strings) |
3591 | doc_reference = 2; | |
20ea2964 | 3592 | |
6428369f | 3593 | if (ch) |
078e7b4a JB |
3594 | { |
3595 | if (flag > 0) | |
3596 | { | |
6428369f | 3597 | if (ch == ']') |
078e7b4a | 3598 | return val; |
e4d29b33 | 3599 | invalid_syntax (") or . in a vector"); |
078e7b4a | 3600 | } |
6428369f | 3601 | if (ch == ')') |
078e7b4a | 3602 | return val; |
6428369f | 3603 | if (ch == '.') |
078e7b4a JB |
3604 | { |
3605 | GCPRO2 (val, tail); | |
265a9e55 | 3606 | if (!NILP (tail)) |
f5df591a | 3607 | XSETCDR (tail, read0 (readcharfun)); |
078e7b4a JB |
3608 | else |
3609 | val = read0 (readcharfun); | |
17634846 | 3610 | read1 (readcharfun, &ch, 0); |
078e7b4a | 3611 | UNGCPRO; |
6428369f | 3612 | if (ch == ')') |
821d417e RS |
3613 | { |
3614 | if (doc_reference == 1) | |
3615 | return make_number (0); | |
d2e24f92 | 3616 | if (doc_reference == 2 && INTEGERP (XCDR (val))) |
b2a30870 | 3617 | { |
d2e24f92 SM |
3618 | char *saved = NULL; |
3619 | file_offset saved_position; | |
b2a30870 | 3620 | /* Get a doc string from the file we are loading. |
8792be66 KH |
3621 | If it's in saved_doc_string, get it from there. |
3622 | ||
3623 | Here, we don't know if the string is a | |
3624 | bytecode string or a doc string. As a | |
3625 | bytecode string must be unibyte, we always | |
3626 | return a unibyte string. If it is actually a | |
3627 | doc string, caller must make it | |
3628 | multibyte. */ | |
8f924df7 | 3629 | |
c15cfd1f | 3630 | /* Position is negative for user variables. */ |
71376d4b | 3631 | EMACS_INT pos = eabs (XINT (XCDR (val))); |
b2a30870 RS |
3632 | if (pos >= saved_doc_string_position |
3633 | && pos < (saved_doc_string_position | |
3634 | + saved_doc_string_length)) | |
3635 | { | |
d2e24f92 SM |
3636 | saved = saved_doc_string; |
3637 | saved_position = saved_doc_string_position; | |
b2a30870 | 3638 | } |
c15cfd1f RS |
3639 | /* Look in prev_saved_doc_string the same way. */ |
3640 | else if (pos >= prev_saved_doc_string_position | |
3641 | && pos < (prev_saved_doc_string_position | |
3642 | + prev_saved_doc_string_length)) | |
3643 | { | |
d2e24f92 SM |
3644 | saved = prev_saved_doc_string; |
3645 | saved_position = prev_saved_doc_string_position; | |
3646 | } | |
3647 | if (saved) | |
3648 | { | |
3649 | ptrdiff_t start = pos - saved_position; | |
82cb60d3 | 3650 | ptrdiff_t from, to; |
c15cfd1f RS |
3651 | |
3652 | /* Process quoting with ^A, | |
3653 | and find the end of the string, | |
3654 | which is marked with ^_ (037). */ | |
3655 | for (from = start, to = start; | |
d2e24f92 | 3656 | saved[from] != 037;) |
c15cfd1f | 3657 | { |
d2e24f92 | 3658 | int c = saved[from++]; |
c15cfd1f RS |
3659 | if (c == 1) |
3660 | { | |
d2e24f92 SM |
3661 | c = saved[from++]; |
3662 | saved[to++] = (c == 1 ? c | |
3663 | : c == '0' ? 0 | |
3664 | : c == '_' ? 037 | |
3665 | : c); | |
c15cfd1f RS |
3666 | } |
3667 | else | |
d2e24f92 | 3668 | saved[to++] = c; |
c15cfd1f RS |
3669 | } |
3670 | ||
d2e24f92 | 3671 | return make_unibyte_string (saved + start, |
8792be66 | 3672 | to - start); |
c15cfd1f | 3673 | } |
b2a30870 | 3674 | else |
8792be66 | 3675 | return get_doc_string (val, 1, 0); |
b2a30870 RS |
3676 | } |
3677 | ||
821d417e RS |
3678 | return val; |
3679 | } | |
e4d29b33 | 3680 | invalid_syntax (". in wrong context"); |
078e7b4a | 3681 | } |
e4d29b33 | 3682 | invalid_syntax ("] in a list"); |
078e7b4a | 3683 | } |
6c6f1994 | 3684 | tem = list1 (elt); |
265a9e55 | 3685 | if (!NILP (tail)) |
f5df591a | 3686 | XSETCDR (tail, tem); |
078e7b4a JB |
3687 | else |
3688 | val = tem; | |
3689 | tail = tem; | |
078e7b4a JB |
3690 | } |
3691 | } | |
3692 | \f | |
1e3890d1 | 3693 | static Lisp_Object initial_obarray; |
078e7b4a | 3694 | |
48def666 | 3695 | /* `oblookup' stores the bucket number here, for the sake of Funintern. */ |
d007f5c8 | 3696 | |
2f30ecd0 | 3697 | static size_t oblookup_last_bucket_number; |
d007f5c8 | 3698 | |
d007f5c8 RS |
3699 | /* Get an error if OBARRAY is not an obarray. |
3700 | If it is one, return it. */ | |
3701 | ||
078e7b4a | 3702 | Lisp_Object |
971de7fb | 3703 | check_obarray (Lisp_Object obarray) |
078e7b4a | 3704 | { |
77b37c05 | 3705 | if (!VECTORP (obarray) || ASIZE (obarray) == 0) |
078e7b4a JB |
3706 | { |
3707 | /* If Vobarray is now invalid, force it to be valid. */ | |
3708 | if (EQ (Vobarray, obarray)) Vobarray = initial_obarray; | |
8878319c | 3709 | wrong_type_argument (Qvectorp, obarray); |
078e7b4a JB |
3710 | } |
3711 | return obarray; | |
3712 | } | |
3713 | ||
d007f5c8 RS |
3714 | /* Intern the C string STR: return a symbol with that name, |
3715 | interned in the current obarray. */ | |
078e7b4a JB |
3716 | |
3717 | Lisp_Object | |
e8df9267 | 3718 | intern_1 (const char *str, ptrdiff_t len) |
078e7b4a | 3719 | { |
e8df9267 DA |
3720 | Lisp_Object obarray = check_obarray (Vobarray); |
3721 | Lisp_Object tem = oblookup (obarray, str, len, len); | |
078e7b4a | 3722 | |
e8df9267 | 3723 | return SYMBOLP (tem) ? tem : Fintern (make_string (str, len), obarray); |
078e7b4a | 3724 | } |
4ad679f9 | 3725 | |
5e2327cf | 3726 | Lisp_Object |
e8df9267 | 3727 | intern_c_string_1 (const char *str, ptrdiff_t len) |
5e2327cf | 3728 | { |
e8df9267 DA |
3729 | Lisp_Object obarray = check_obarray (Vobarray); |
3730 | Lisp_Object tem = oblookup (obarray, str, len, len); | |
5e2327cf | 3731 | |
5e2327cf DN |
3732 | if (SYMBOLP (tem)) |
3733 | return tem; | |
3734 | ||
3735 | if (NILP (Vpurify_flag)) | |
3736 | /* Creating a non-pure string from a string literal not | |
3737 | implemented yet. We could just use make_string here and live | |
3738 | with the extra copy. */ | |
1088b922 | 3739 | emacs_abort (); |
5e2327cf | 3740 | |
2a0213a6 | 3741 | return Fintern (make_pure_c_string (str, len), obarray); |
5e2327cf | 3742 | } |
d007f5c8 | 3743 | \f |
a7ca3326 | 3744 | DEFUN ("intern", Fintern, Sintern, 1, 2, 0, |
5de38842 PJ |
3745 | doc: /* Return the canonical symbol whose name is STRING. |
3746 | If there is none, one is created by this function and returned. | |
3747 | A second optional argument specifies the obarray to use; | |
3748 | it defaults to the value of `obarray'. */) | |
5842a27b | 3749 | (Lisp_Object string, Lisp_Object obarray) |
078e7b4a JB |
3750 | { |
3751 | register Lisp_Object tem, sym, *ptr; | |
3752 | ||
265a9e55 | 3753 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3754 | obarray = check_obarray (obarray); |
3755 | ||
b7826503 | 3756 | CHECK_STRING (string); |
078e7b4a | 3757 | |
42a5b22f | 3758 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3759 | SCHARS (string), |
3760 | SBYTES (string)); | |
cfff016d | 3761 | if (!INTEGERP (tem)) |
078e7b4a JB |
3762 | return tem; |
3763 | ||
265a9e55 | 3764 | if (!NILP (Vpurify_flag)) |
9391b698 EN |
3765 | string = Fpurecopy (string); |
3766 | sym = Fmake_symbol (string); | |
44c6c019 GM |
3767 | |
3768 | if (EQ (obarray, initial_obarray)) | |
3769 | XSYMBOL (sym)->interned = SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
3770 | else | |
3771 | XSYMBOL (sym)->interned = SYMBOL_INTERNED; | |
078e7b4a | 3772 | |
d5db4077 | 3773 | if ((SREF (string, 0) == ':') |
a458d45d | 3774 | && EQ (obarray, initial_obarray)) |
44c6c019 GM |
3775 | { |
3776 | XSYMBOL (sym)->constant = 1; | |
ce5b453a SM |
3777 | XSYMBOL (sym)->redirect = SYMBOL_PLAINVAL; |
3778 | SET_SYMBOL_VAL (XSYMBOL (sym), sym); | |
44c6c019 | 3779 | } |
a0549832 | 3780 | |
4939150c | 3781 | ptr = aref_addr (obarray, XINT(tem)); |
cfff016d | 3782 | if (SYMBOLP (*ptr)) |
c644523b | 3783 | set_symbol_next (sym, XSYMBOL (*ptr)); |
078e7b4a | 3784 | else |
c644523b | 3785 | set_symbol_next (sym, NULL); |
078e7b4a JB |
3786 | *ptr = sym; |
3787 | return sym; | |
3788 | } | |
3789 | ||
a7ca3326 | 3790 | DEFUN ("intern-soft", Fintern_soft, Sintern_soft, 1, 2, 0, |
5de38842 PJ |
3791 | doc: /* Return the canonical symbol named NAME, or nil if none exists. |
3792 | NAME may be a string or a symbol. If it is a symbol, that exact | |
3793 | symbol is searched for. | |
3794 | A second optional argument specifies the obarray to use; | |
3795 | it defaults to the value of `obarray'. */) | |
5842a27b | 3796 | (Lisp_Object name, Lisp_Object obarray) |
078e7b4a | 3797 | { |
c2d47f4b | 3798 | register Lisp_Object tem, string; |
078e7b4a | 3799 | |
265a9e55 | 3800 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3801 | obarray = check_obarray (obarray); |
3802 | ||
b55048d4 GM |
3803 | if (!SYMBOLP (name)) |
3804 | { | |
b7826503 | 3805 | CHECK_STRING (name); |
c2d47f4b | 3806 | string = name; |
b55048d4 GM |
3807 | } |
3808 | else | |
c2d47f4b | 3809 | string = SYMBOL_NAME (name); |
078e7b4a | 3810 | |
42a5b22f | 3811 | tem = oblookup (obarray, SSDATA (string), SCHARS (string), SBYTES (string)); |
b55048d4 GM |
3812 | if (INTEGERP (tem) || (SYMBOLP (name) && !EQ (name, tem))) |
3813 | return Qnil; | |
3814 | else | |
078e7b4a | 3815 | return tem; |
078e7b4a | 3816 | } |
d007f5c8 | 3817 | \f |
a7ca3326 | 3818 | DEFUN ("unintern", Funintern, Sunintern, 1, 2, 0, |
5de38842 PJ |
3819 | doc: /* Delete the symbol named NAME, if any, from OBARRAY. |
3820 | The value is t if a symbol was found and deleted, nil otherwise. | |
3821 | NAME may be a string or a symbol. If it is a symbol, that symbol | |
3822 | is deleted, if it belongs to OBARRAY--no other symbol is deleted. | |
3823 | OBARRAY defaults to the value of the variable `obarray'. */) | |
5842a27b | 3824 | (Lisp_Object name, Lisp_Object obarray) |
d007f5c8 RS |
3825 | { |
3826 | register Lisp_Object string, tem; | |
2f30ecd0 | 3827 | size_t hash; |
d007f5c8 RS |
3828 | |
3829 | if (NILP (obarray)) obarray = Vobarray; | |
3830 | obarray = check_obarray (obarray); | |
3831 | ||
3832 | if (SYMBOLP (name)) | |
d4c83cae | 3833 | string = SYMBOL_NAME (name); |
d007f5c8 RS |
3834 | else |
3835 | { | |
b7826503 | 3836 | CHECK_STRING (name); |
d007f5c8 RS |
3837 | string = name; |
3838 | } | |
3839 | ||
42a5b22f | 3840 | tem = oblookup (obarray, SSDATA (string), |
d5db4077 KR |
3841 | SCHARS (string), |
3842 | SBYTES (string)); | |
d007f5c8 RS |
3843 | if (INTEGERP (tem)) |
3844 | return Qnil; | |
3845 | /* If arg was a symbol, don't delete anything but that symbol itself. */ | |
3846 | if (SYMBOLP (name) && !EQ (name, tem)) | |
3847 | return Qnil; | |
3848 | ||
8ab1650e SM |
3849 | /* There are plenty of other symbols which will screw up the Emacs |
3850 | session if we unintern them, as well as even more ways to use | |
3851 | `setq' or `fset' or whatnot to make the Emacs session | |
3852 | unusable. Let's not go down this silly road. --Stef */ | |
3853 | /* if (EQ (tem, Qnil) || EQ (tem, Qt)) | |
3854 | error ("Attempt to unintern t or nil"); */ | |
82c602f0 | 3855 | |
44c6c019 | 3856 | XSYMBOL (tem)->interned = SYMBOL_UNINTERNED; |
ca69c42f | 3857 | |
d007f5c8 RS |
3858 | hash = oblookup_last_bucket_number; |
3859 | ||
28be1ada | 3860 | if (EQ (AREF (obarray, hash), tem)) |
b2a30870 RS |
3861 | { |
3862 | if (XSYMBOL (tem)->next) | |
4939150c PE |
3863 | { |
3864 | Lisp_Object sym; | |
3865 | XSETSYMBOL (sym, XSYMBOL (tem)->next); | |
3866 | ASET (obarray, hash, sym); | |
3867 | } | |
b2a30870 | 3868 | else |
4939150c | 3869 | ASET (obarray, hash, make_number (0)); |
b2a30870 | 3870 | } |
d007f5c8 RS |
3871 | else |
3872 | { | |
3873 | Lisp_Object tail, following; | |
3874 | ||
28be1ada | 3875 | for (tail = AREF (obarray, hash); |
d007f5c8 RS |
3876 | XSYMBOL (tail)->next; |
3877 | tail = following) | |
3878 | { | |
3879 | XSETSYMBOL (following, XSYMBOL (tail)->next); | |
3880 | if (EQ (following, tem)) | |
3881 | { | |
c644523b | 3882 | set_symbol_next (tail, XSYMBOL (following)->next); |
d007f5c8 RS |
3883 | break; |
3884 | } | |
3885 | } | |
3886 | } | |
3887 | ||
3888 | return Qt; | |
3889 | } | |
3890 | \f | |
3891 | /* Return the symbol in OBARRAY whose names matches the string | |
e28552a4 RS |
3892 | of SIZE characters (SIZE_BYTE bytes) at PTR. |
3893 | If there is no such symbol in OBARRAY, return nil. | |
d007f5c8 RS |
3894 | |
3895 | Also store the bucket number in oblookup_last_bucket_number. */ | |
078e7b4a JB |
3896 | |
3897 | Lisp_Object | |
d311d28c | 3898 | oblookup (Lisp_Object obarray, register const char *ptr, ptrdiff_t size, ptrdiff_t size_byte) |
078e7b4a | 3899 | { |
2f30ecd0 PE |
3900 | size_t hash; |
3901 | size_t obsize; | |
078e7b4a JB |
3902 | register Lisp_Object tail; |
3903 | Lisp_Object bucket, tem; | |
3904 | ||
2bce5643 DA |
3905 | obarray = check_obarray (obarray); |
3906 | obsize = ASIZE (obarray); | |
3907 | ||
519418b3 RS |
3908 | /* This is sometimes needed in the middle of GC. */ |
3909 | obsize &= ~ARRAY_MARK_FLAG; | |
7c2fb837 | 3910 | hash = hash_string (ptr, size_byte) % obsize; |
28be1ada | 3911 | bucket = AREF (obarray, hash); |
d007f5c8 | 3912 | oblookup_last_bucket_number = hash; |
8bc285a2 | 3913 | if (EQ (bucket, make_number (0))) |
078e7b4a | 3914 | ; |
cfff016d | 3915 | else if (!SYMBOLP (bucket)) |
48def666 | 3916 | error ("Bad data in guts of obarray"); /* Like CADR error message. */ |
d007f5c8 RS |
3917 | else |
3918 | for (tail = bucket; ; XSETSYMBOL (tail, XSYMBOL (tail)->next)) | |
078e7b4a | 3919 | { |
d5db4077 KR |
3920 | if (SBYTES (SYMBOL_NAME (tail)) == size_byte |
3921 | && SCHARS (SYMBOL_NAME (tail)) == size | |
72af86bd | 3922 | && !memcmp (SDATA (SYMBOL_NAME (tail)), ptr, size_byte)) |
078e7b4a JB |
3923 | return tail; |
3924 | else if (XSYMBOL (tail)->next == 0) | |
3925 | break; | |
3926 | } | |
1805de4f | 3927 | XSETINT (tem, hash); |
078e7b4a JB |
3928 | return tem; |
3929 | } | |
d007f5c8 | 3930 | \f |
078e7b4a | 3931 | void |
971de7fb | 3932 | map_obarray (Lisp_Object obarray, void (*fn) (Lisp_Object, Lisp_Object), Lisp_Object arg) |
078e7b4a | 3933 | { |
82cb60d3 | 3934 | ptrdiff_t i; |
078e7b4a | 3935 | register Lisp_Object tail; |
b7826503 | 3936 | CHECK_VECTOR (obarray); |
77b37c05 | 3937 | for (i = ASIZE (obarray) - 1; i >= 0; i--) |
078e7b4a | 3938 | { |
28be1ada | 3939 | tail = AREF (obarray, i); |
4f5c4403 | 3940 | if (SYMBOLP (tail)) |
078e7b4a JB |
3941 | while (1) |
3942 | { | |
3943 | (*fn) (tail, arg); | |
3944 | if (XSYMBOL (tail)->next == 0) | |
3945 | break; | |
1805de4f | 3946 | XSETSYMBOL (tail, XSYMBOL (tail)->next); |
078e7b4a JB |
3947 | } |
3948 | } | |
3949 | } | |
3950 | ||
7d383292 | 3951 | static void |
971de7fb | 3952 | mapatoms_1 (Lisp_Object sym, Lisp_Object function) |
078e7b4a JB |
3953 | { |
3954 | call1 (function, sym); | |
3955 | } | |
3956 | ||
3957 | DEFUN ("mapatoms", Fmapatoms, Smapatoms, 1, 2, 0, | |
5de38842 PJ |
3958 | doc: /* Call FUNCTION on every symbol in OBARRAY. |
3959 | OBARRAY defaults to the value of `obarray'. */) | |
5842a27b | 3960 | (Lisp_Object function, Lisp_Object obarray) |
078e7b4a | 3961 | { |
265a9e55 | 3962 | if (NILP (obarray)) obarray = Vobarray; |
078e7b4a JB |
3963 | obarray = check_obarray (obarray); |
3964 | ||
3965 | map_obarray (obarray, mapatoms_1, function); | |
3966 | return Qnil; | |
3967 | } | |
3968 | ||
5e88a39e | 3969 | #define OBARRAY_SIZE 1511 |
078e7b4a JB |
3970 | |
3971 | void | |
971de7fb | 3972 | init_obarray (void) |
078e7b4a JB |
3973 | { |
3974 | Lisp_Object oblength; | |
37d0112b | 3975 | ptrdiff_t size = 100 + MAX_MULTIBYTE_LENGTH; |
078e7b4a | 3976 | |
baf69866 | 3977 | XSETFASTINT (oblength, OBARRAY_SIZE); |
078e7b4a | 3978 | |
078e7b4a JB |
3979 | Vobarray = Fmake_vector (oblength, make_number (0)); |
3980 | initial_obarray = Vobarray; | |
3981 | staticpro (&initial_obarray); | |
078e7b4a | 3982 | |
2a0213a6 | 3983 | Qunbound = Fmake_symbol (build_pure_c_string ("unbound")); |
ce5b453a SM |
3984 | /* Set temporary dummy values to Qnil and Vpurify_flag to satisfy the |
3985 | NILP (Vpurify_flag) check in intern_c_string. */ | |
3986 | Qnil = make_number (-1); Vpurify_flag = make_number (1); | |
3987 | Qnil = intern_c_string ("nil"); | |
3988 | ||
3989 | /* Fmake_symbol inits fields of new symbols with Qunbound and Qnil, | |
53964682 | 3990 | so those two need to be fixed manually. */ |
ce5b453a | 3991 | SET_SYMBOL_VAL (XSYMBOL (Qunbound), Qunbound); |
eadf1faa | 3992 | set_symbol_function (Qunbound, Qnil); |
c644523b | 3993 | set_symbol_plist (Qunbound, Qnil); |
ce5b453a SM |
3994 | SET_SYMBOL_VAL (XSYMBOL (Qnil), Qnil); |
3995 | XSYMBOL (Qnil)->constant = 1; | |
9660f5fc | 3996 | XSYMBOL (Qnil)->declared_special = 1; |
c644523b | 3997 | set_symbol_plist (Qnil, Qnil); |
eadf1faa | 3998 | set_symbol_function (Qnil, Qnil); |
078e7b4a | 3999 | |
d67b4f80 | 4000 | Qt = intern_c_string ("t"); |
ce5b453a | 4001 | SET_SYMBOL_VAL (XSYMBOL (Qt), Qt); |
9660f5fc | 4002 | XSYMBOL (Qnil)->declared_special = 1; |
44c6c019 | 4003 | XSYMBOL (Qt)->constant = 1; |
078e7b4a JB |
4004 | |
4005 | /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */ | |
4006 | Vpurify_flag = Qt; | |
4007 | ||
cd3520a4 | 4008 | DEFSYM (Qvariable_documentation, "variable-documentation"); |
078e7b4a | 4009 | |
23f86fce | 4010 | read_buffer = xmalloc (size); |
37d0112b | 4011 | read_buffer_size = size; |
078e7b4a JB |
4012 | } |
4013 | \f | |
4014 | void | |
971de7fb | 4015 | defsubr (struct Lisp_Subr *sname) |
078e7b4a | 4016 | { |
c644523b | 4017 | Lisp_Object sym, tem; |
d67b4f80 | 4018 | sym = intern_c_string (sname->symbol_name); |
914adc42 | 4019 | XSETPVECTYPE (sname, PVEC_SUBR); |
c644523b DA |
4020 | XSETSUBR (tem, sname); |
4021 | set_symbol_function (sym, tem); | |
078e7b4a JB |
4022 | } |
4023 | ||
48def666 | 4024 | #ifdef NOTDEF /* Use fset in subr.el now! */ |
078e7b4a | 4025 | void |
1dae0f0a | 4026 | defalias (struct Lisp_Subr *sname, char *string) |
078e7b4a JB |
4027 | { |
4028 | Lisp_Object sym; | |
4029 | sym = intern (string); | |
1805de4f | 4030 | XSETSUBR (XSYMBOL (sym)->function, sname); |
078e7b4a JB |
4031 | } |
4032 | #endif /* NOTDEF */ | |
4033 | ||
039c6cc3 | 4034 | /* Define an "integer variable"; a symbol whose value is forwarded to a |
82cb60d3 | 4035 | C variable of type EMACS_INT. Sample call (with "xx" to fool make-docfile): |
039c6cc3 | 4036 | DEFxxVAR_INT ("emacs-priority", &emacs_priority, "Documentation"); */ |
078e7b4a | 4037 | void |
ce5b453a SM |
4038 | defvar_int (struct Lisp_Intfwd *i_fwd, |
4039 | const char *namestring, EMACS_INT *address) | |
078e7b4a | 4040 | { |
ce5b453a | 4041 | Lisp_Object sym; |
5e2327cf | 4042 | sym = intern_c_string (namestring); |
ce5b453a SM |
4043 | i_fwd->type = Lisp_Fwd_Int; |
4044 | i_fwd->intvar = address; | |
b9598260 | 4045 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4046 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4047 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)i_fwd); | |
078e7b4a JB |
4048 | } |
4049 | ||
f0529b5b | 4050 | /* Similar but define a variable whose value is t if address contains 1, |
0f011df0 | 4051 | nil if address contains 0. */ |
078e7b4a | 4052 | void |
ce5b453a | 4053 | defvar_bool (struct Lisp_Boolfwd *b_fwd, |
f5d9e83a | 4054 | const char *namestring, bool *address) |
078e7b4a | 4055 | { |
ce5b453a | 4056 | Lisp_Object sym; |
5e2327cf | 4057 | sym = intern_c_string (namestring); |
ce5b453a SM |
4058 | b_fwd->type = Lisp_Fwd_Bool; |
4059 | b_fwd->boolvar = address; | |
b9598260 | 4060 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4061 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4062 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)b_fwd); | |
1ffcc3b1 | 4063 | Vbyte_boolean_vars = Fcons (sym, Vbyte_boolean_vars); |
078e7b4a JB |
4064 | } |
4065 | ||
1a0f90f7 KH |
4066 | /* Similar but define a variable whose value is the Lisp Object stored |
4067 | at address. Two versions: with and without gc-marking of the C | |
4068 | variable. The nopro version is used when that variable will be | |
4069 | gc-marked for some other reason, since marking the same slot twice | |
4070 | can cause trouble with strings. */ | |
078e7b4a | 4071 | void |
ce5b453a SM |
4072 | defvar_lisp_nopro (struct Lisp_Objfwd *o_fwd, |
4073 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4074 | { |
ce5b453a | 4075 | Lisp_Object sym; |
5e2327cf | 4076 | sym = intern_c_string (namestring); |
ce5b453a SM |
4077 | o_fwd->type = Lisp_Fwd_Obj; |
4078 | o_fwd->objvar = address; | |
b9598260 | 4079 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4080 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4081 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)o_fwd); | |
078e7b4a JB |
4082 | } |
4083 | ||
078e7b4a | 4084 | void |
ce5b453a SM |
4085 | defvar_lisp (struct Lisp_Objfwd *o_fwd, |
4086 | const char *namestring, Lisp_Object *address) | |
078e7b4a | 4087 | { |
ce5b453a | 4088 | defvar_lisp_nopro (o_fwd, namestring, address); |
1a0f90f7 | 4089 | staticpro (address); |
078e7b4a JB |
4090 | } |
4091 | ||
950c215d | 4092 | /* Similar but define a variable whose value is the Lisp Object stored |
4ac38690 | 4093 | at a particular offset in the current kboard object. */ |
950c215d KH |
4094 | |
4095 | void | |
ce5b453a SM |
4096 | defvar_kboard (struct Lisp_Kboard_Objfwd *ko_fwd, |
4097 | const char *namestring, int offset) | |
950c215d | 4098 | { |
ce5b453a | 4099 | Lisp_Object sym; |
5e2327cf | 4100 | sym = intern_c_string (namestring); |
ce5b453a SM |
4101 | ko_fwd->type = Lisp_Fwd_Kboard_Obj; |
4102 | ko_fwd->offset = offset; | |
b9598260 | 4103 | XSYMBOL (sym)->declared_special = 1; |
ce5b453a SM |
4104 | XSYMBOL (sym)->redirect = SYMBOL_FORWARDED; |
4105 | SET_SYMBOL_FWD (XSYMBOL (sym), (union Lisp_Fwd *)ko_fwd); | |
950c215d | 4106 | } |
078e7b4a | 4107 | \f |
17e0445b | 4108 | /* Check that the elements of lpath exist. */ |
929e7845 | 4109 | |
b3350bf9 | 4110 | static void |
17e0445b | 4111 | load_path_check (Lisp_Object lpath) |
929e7845 GM |
4112 | { |
4113 | Lisp_Object path_tail; | |
4114 | ||
4115 | /* The only elements that might not exist are those from | |
4116 | PATH_LOADSEARCH, EMACSLOADPATH. Anything else is only added if | |
4117 | it exists. */ | |
17e0445b | 4118 | for (path_tail = lpath; !NILP (path_tail); path_tail = XCDR (path_tail)) |
929e7845 GM |
4119 | { |
4120 | Lisp_Object dirfile; | |
4121 | dirfile = Fcar (path_tail); | |
4122 | if (STRINGP (dirfile)) | |
4123 | { | |
4124 | dirfile = Fdirectory_file_name (dirfile); | |
73dcdb9f PE |
4125 | if (! file_accessible_directory_p (SSDATA (dirfile))) |
4126 | dir_warning ("Lisp directory", XCAR (path_tail)); | |
929e7845 GM |
4127 | } |
4128 | } | |
4129 | } | |
4130 | ||
11938f10 KH |
4131 | /* Record the value of load-path used at the start of dumping |
4132 | so we can see if the site changed it later during dumping. */ | |
4133 | static Lisp_Object dump_path; | |
4134 | ||
17e0445b GM |
4135 | /* Return the default load-path, to be used if EMACSLOADPATH is unset. |
4136 | This does not include the standard site-lisp directories | |
4137 | under the installation prefix (i.e., PATH_SITELOADSEARCH), | |
4138 | but it does (unless no_site_lisp is set) include site-lisp | |
4139 | directories in the source/build directories if those exist and we | |
4140 | are running uninstalled. | |
4141 | ||
4142 | Uses the following logic: | |
4143 | If CANNOT_DUMP: Use PATH_LOADSEARCH. | |
929e7845 GM |
4144 | The remainder is what happens when dumping works: |
4145 | If purify-flag (ie dumping) just use PATH_DUMPLOADSEARCH. | |
17e0445b | 4146 | Otherwise use PATH_LOADSEARCH. |
929e7845 | 4147 | |
17e0445b GM |
4148 | If !initialized, then just set dump_path and return PATH_DUMPLOADSEARCH. |
4149 | If initialized, then if Vload_path != dump_path, return just Vload_path. | |
929e7845 | 4150 | (Presumably the load-path has already been changed by something. |
17e0445b | 4151 | This can only be from a site-load file during dumping.) |
929e7845 GM |
4152 | If Vinstallation_directory is not nil (ie, running uninstalled): |
4153 | If installation-dir/lisp exists and not already a member, | |
4154 | we must be running uninstalled. Reset the load-path | |
4155 | to just installation-dir/lisp. (The default PATH_LOADSEARCH | |
4156 | refers to the eventual installation directories. Since we | |
4157 | are not yet installed, we should not use them, even if they exist.) | |
4158 | If installation-dir/lisp does not exist, just add dump_path at the | |
4159 | end instead. | |
4160 | Add installation-dir/leim (if exists and not already a member) at the front. | |
4161 | Add installation-dir/site-lisp (if !no_site_lisp, and exists | |
4162 | and not already a member) at the front. | |
4163 | If installation-dir != source-dir (ie running an uninstalled, | |
4164 | out-of-tree build) AND install-dir/src/Makefile exists BUT | |
4165 | install-dir/src/Makefile.in does NOT exist (this is a sanity | |
4166 | check), then repeat the above steps for source-dir/lisp, | |
4167 | leim and site-lisp. | |
929e7845 | 4168 | */ |
17e0445b GM |
4169 | Lisp_Object |
4170 | load_path_default (bool ignore_existing) | |
078e7b4a | 4171 | { |
17e0445b | 4172 | Lisp_Object lpath = Qnil; |
8ea90aa3 | 4173 | const char *normal; |
ca26824c | 4174 | |
46947372 | 4175 | #ifdef CANNOT_DUMP |
9e059e3f GM |
4176 | #ifdef HAVE_NS |
4177 | const char *loadpath = ns_load_path (); | |
4178 | #endif | |
4179 | ||
46947372 | 4180 | normal = PATH_LOADSEARCH; |
9e059e3f | 4181 | #ifdef HAVE_NS |
17e0445b | 4182 | lpath = decode_env_path (0, loadpath ? loadpath : normal, 0); |
9e059e3f | 4183 | #else |
17e0445b | 4184 | lpath = decode_env_path (0, normal, 0); |
9e059e3f | 4185 | #endif |
929e7845 | 4186 | |
76151e2c | 4187 | #else /* !CANNOT_DUMP */ |
17e0445b GM |
4188 | |
4189 | normal = NILP (Vpurify_flag) ? PATH_LOADSEARCH : PATH_DUMPLOADSEARCH; | |
279499f0 | 4190 | |
9d8d07e5 GM |
4191 | /* In a dumped Emacs, we normally reset the value of Vload_path using |
4192 | PATH_LOADSEARCH, since the value that was dumped uses lisp/ in | |
4193 | the source directory, instead of the path of the installed elisp | |
4194 | libraries. However, if it appears that Vload_path has already been | |
4195 | changed from the default that was saved before dumping, don't | |
929e7845 GM |
4196 | change it further. Changes can only be due to EMACSLOADPATH, or |
4197 | site-lisp files that were processed during dumping. */ | |
4746118a JB |
4198 | if (initialized) |
4199 | { | |
17e0445b | 4200 | if (!ignore_existing && NILP (Fequal (dump_path, Vload_path))) |
929e7845 | 4201 | { |
17e0445b GM |
4202 | /* Do not make any changes. */ |
4203 | return Vload_path; | |
929e7845 GM |
4204 | } |
4205 | else | |
17e0445b | 4206 | { |
9e059e3f | 4207 | #ifdef HAVE_NS |
17e0445b GM |
4208 | const char *loadpath = ns_load_path (); |
4209 | lpath = decode_env_path (0, loadpath ? loadpath : normal, 0); | |
9e059e3f | 4210 | #else |
17e0445b | 4211 | lpath = decode_env_path (0, normal, 0); |
9e059e3f | 4212 | #endif |
17e0445b GM |
4213 | if (!NILP (Vinstallation_directory)) |
4214 | { | |
4215 | Lisp_Object tem, tem1; | |
ca26824c | 4216 | |
929e7845 | 4217 | /* Add to the path the lisp subdir of the installation |
73dcdb9f | 4218 | dir, if it is accessible. Note: in out-of-tree builds, |
929e7845 | 4219 | this directory is empty save for Makefile. */ |
ca26824c GM |
4220 | tem = Fexpand_file_name (build_string ("lisp"), |
4221 | Vinstallation_directory); | |
73dcdb9f | 4222 | tem1 = Ffile_accessible_directory_p (tem); |
ca26824c GM |
4223 | if (!NILP (tem1)) |
4224 | { | |
17e0445b | 4225 | if (NILP (Fmember (tem, lpath))) |
ca26824c | 4226 | { |
929e7845 GM |
4227 | /* We are running uninstalled. The default load-path |
4228 | points to the eventual installed lisp, leim | |
4229 | directories. We should not use those now, even | |
4230 | if they exist, so start over from a clean slate. */ | |
17e0445b | 4231 | lpath = list1 (tem); |
ca26824c GM |
4232 | } |
4233 | } | |
4234 | else | |
4235 | /* That dir doesn't exist, so add the build-time | |
4236 | Lisp dirs instead. */ | |
17e0445b | 4237 | lpath = nconc2 (lpath, dump_path); |
ca26824c | 4238 | |
73dcdb9f | 4239 | /* Add leim under the installation dir, if it is accessible. */ |
ca26824c GM |
4240 | tem = Fexpand_file_name (build_string ("leim"), |
4241 | Vinstallation_directory); | |
73dcdb9f | 4242 | tem1 = Ffile_accessible_directory_p (tem); |
ca26824c GM |
4243 | if (!NILP (tem1)) |
4244 | { | |
17e0445b GM |
4245 | if (NILP (Fmember (tem, lpath))) |
4246 | lpath = Fcons (tem, lpath); | |
ca26824c GM |
4247 | } |
4248 | ||
4249 | /* Add site-lisp under the installation dir, if it exists. */ | |
4250 | if (!no_site_lisp) | |
4251 | { | |
4252 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
4253 | Vinstallation_directory); | |
73dcdb9f | 4254 | tem1 = Ffile_accessible_directory_p (tem); |
ca26824c GM |
4255 | if (!NILP (tem1)) |
4256 | { | |
17e0445b GM |
4257 | if (NILP (Fmember (tem, lpath))) |
4258 | lpath = Fcons (tem, lpath); | |
ca26824c GM |
4259 | } |
4260 | } | |
4261 | ||
4262 | /* If Emacs was not built in the source directory, | |
4263 | and it is run from where it was built, add to load-path | |
4264 | the lisp, leim and site-lisp dirs under that directory. */ | |
4265 | ||
4266 | if (NILP (Fequal (Vinstallation_directory, Vsource_directory))) | |
4267 | { | |
4268 | Lisp_Object tem2; | |
4269 | ||
4270 | tem = Fexpand_file_name (build_string ("src/Makefile"), | |
4271 | Vinstallation_directory); | |
4272 | tem1 = Ffile_exists_p (tem); | |
4273 | ||
4274 | /* Don't be fooled if they moved the entire source tree | |
4275 | AFTER dumping Emacs. If the build directory is indeed | |
4276 | different from the source dir, src/Makefile.in and | |
4277 | src/Makefile will not be found together. */ | |
4278 | tem = Fexpand_file_name (build_string ("src/Makefile.in"), | |
4279 | Vinstallation_directory); | |
4280 | tem2 = Ffile_exists_p (tem); | |
4281 | if (!NILP (tem1) && NILP (tem2)) | |
4282 | { | |
4283 | tem = Fexpand_file_name (build_string ("lisp"), | |
4284 | Vsource_directory); | |
4285 | ||
17e0445b GM |
4286 | if (NILP (Fmember (tem, lpath))) |
4287 | lpath = Fcons (tem, lpath); | |
ca26824c GM |
4288 | |
4289 | tem = Fexpand_file_name (build_string ("leim"), | |
4290 | Vsource_directory); | |
4291 | ||
17e0445b GM |
4292 | if (NILP (Fmember (tem, lpath))) |
4293 | lpath = Fcons (tem, lpath); | |
ca26824c GM |
4294 | |
4295 | if (!no_site_lisp) | |
4296 | { | |
4297 | tem = Fexpand_file_name (build_string ("site-lisp"), | |
4298 | Vsource_directory); | |
73dcdb9f | 4299 | tem1 = Ffile_accessible_directory_p (tem); |
31d02438 GM |
4300 | if (!NILP (tem1)) |
4301 | { | |
17e0445b GM |
4302 | if (NILP (Fmember (tem, lpath))) |
4303 | lpath = Fcons (tem, lpath); | |
31d02438 | 4304 | } |
ca26824c GM |
4305 | } |
4306 | } | |
4307 | } /* Vinstallation_directory != Vsource_directory */ | |
4308 | ||
17e0445b | 4309 | } /* if Vinstallation_directory */ |
929e7845 | 4310 | |
17e0445b | 4311 | } /* if dump_path == Vload_path */ |
4746118a | 4312 | } |
9d8d07e5 | 4313 | else /* !initialized */ |
11938f10 | 4314 | { |
929e7845 GM |
4315 | /* NORMAL refers to PATH_DUMPLOADSEARCH, ie the lisp dir in the |
4316 | source directory. We used to add ../lisp (ie the lisp dir in | |
4317 | the build directory) at the front here, but that caused trouble | |
17e0445b GM |
4318 | because it was copied from dump_path into Vload_path, above, |
4319 | when Vinstallation_directory was non-nil. It should not be | |
929e7845 GM |
4320 | necessary, since in out of tree builds lisp/ is empty, save |
4321 | for Makefile. */ | |
17e0445b GM |
4322 | lpath = decode_env_path (0, normal, 0); |
4323 | dump_path = lpath; | |
11938f10 | 4324 | } |
17e0445b GM |
4325 | #endif /* !CANNOT_DUMP */ |
4326 | ||
4327 | return lpath; | |
4328 | } | |
4329 | ||
4330 | void | |
4331 | init_lread (void) | |
4332 | { | |
4333 | /* First, set Vload_path. */ | |
4334 | ||
4335 | /* We explicitly ignore EMACSLOADPATH when dumping. */ | |
4336 | if (NILP (Vpurify_flag) && egetenv ("EMACSLOADPATH")) | |
4337 | { | |
4338 | Vload_path = decode_env_path ("EMACSLOADPATH", 0, 1); | |
4339 | ||
4340 | /* Check (non-nil) user-supplied elements. */ | |
4341 | load_path_check (Vload_path); | |
4342 | ||
4343 | /* Replace any nil elements from the environment with the default. */ | |
2c98e669 | 4344 | if (!NILP (Fmemq (Qnil, Vload_path))) |
17e0445b GM |
4345 | { |
4346 | Lisp_Object lpath = Vload_path; | |
4347 | Lisp_Object elem, default_lpath = load_path_default (1); | |
4348 | ||
4349 | /* Check defaults, before adding site-lisp. */ | |
4350 | load_path_check (default_lpath); | |
4351 | ||
4352 | /* Add the site-lisp directories to the front of the default. */ | |
4353 | if (!no_site_lisp) | |
4354 | { | |
4355 | Lisp_Object sitelisp; | |
4356 | sitelisp = decode_env_path (0, PATH_SITELOADSEARCH, 0); | |
4357 | if (! NILP (sitelisp)) | |
4358 | default_lpath = nconc2 (sitelisp, default_lpath); | |
4359 | } | |
4360 | ||
4361 | Vload_path = Qnil; | |
4362 | ||
4363 | /* Replace nils from EMACSLOADPATH by default. */ | |
4364 | while (CONSP (lpath)) | |
4365 | { | |
4366 | Lisp_Object arg[2]; | |
4367 | elem = XCAR (lpath); | |
4368 | lpath = XCDR (lpath); | |
4369 | arg[0] = Vload_path; | |
4370 | arg[1] = NILP (elem) ? default_lpath : Fcons (elem, Qnil); | |
4371 | Vload_path = Fappend (2, arg); | |
4372 | } | |
4373 | } /* Fmemq (Qnil, Vload_path) */ | |
4374 | } | |
4375 | else /* Vpurify_flag || !EMACSLOADPATH */ | |
4376 | { | |
97bacf8c | 4377 | Lisp_Object lpath = Vload_path; |
17e0445b GM |
4378 | Vload_path = load_path_default (0); |
4379 | ||
4380 | /* Check before adding site-lisp directories. | |
4381 | The install should have created them, but they are not | |
4382 | required, so no need to warn if they are absent. | |
4383 | Or we might be running before installation. */ | |
4384 | load_path_check (Vload_path); | |
4385 | ||
4386 | /* Add the site-lisp directories at the front, unless the | |
4387 | load-path has somehow already been changed (this can only be | |
4388 | from a site-load file during dumping?) from the dumped value. | |
4389 | FIXME? Should we ignore any dump_path changes? */ | |
97bacf8c | 4390 | if (initialized && !no_site_lisp && !NILP (Fequal (dump_path, lpath))) |
17e0445b GM |
4391 | { |
4392 | Lisp_Object sitelisp; | |
4393 | sitelisp = decode_env_path (0, PATH_SITELOADSEARCH, 0); | |
4394 | if (! NILP (sitelisp)) Vload_path = nconc2 (sitelisp, Vload_path); | |
4395 | } | |
4396 | } /* !Vpurify_flag && EMACSLOADPATH */ | |
279499f0 | 4397 | |
279499f0 JB |
4398 | Vvalues = Qnil; |
4399 | ||
078e7b4a | 4400 | load_in_progress = 0; |
4e53f562 | 4401 | Vload_file_name = Qnil; |
8f6b0411 | 4402 | Vstandard_input = Qt; |
f74b0705 | 4403 | Vloads_in_progress = Qnil; |
078e7b4a JB |
4404 | } |
4405 | ||
73dcdb9f PE |
4406 | /* Print a warning that directory intended for use USE and with name |
4407 | DIRNAME cannot be accessed. On entry, errno should correspond to | |
4408 | the access failure. Print the warning on stderr and put it in | |
4409 | *Messages*. */ | |
85496b8c | 4410 | |
d5b28a9d | 4411 | void |
73dcdb9f | 4412 | dir_warning (char const *use, Lisp_Object dirname) |
85496b8c | 4413 | { |
73dcdb9f PE |
4414 | static char const format[] = "Warning: %s `%s': %s\n"; |
4415 | int access_errno = errno; | |
4416 | fprintf (stderr, format, use, SSDATA (dirname), strerror (access_errno)); | |
0df02bf3 | 4417 | |
48def666 | 4418 | /* Don't log the warning before we've initialized!! */ |
9b69357e | 4419 | if (initialized) |
0df02bf3 | 4420 | { |
73dcdb9f | 4421 | char const *diagnostic = emacs_strerror (access_errno); |
0df02bf3 | 4422 | USE_SAFE_ALLOCA; |
73dcdb9f PE |
4423 | char *buffer = SAFE_ALLOCA (sizeof format - 3 * (sizeof "%s" - 1) |
4424 | + strlen (use) + SBYTES (dirname) | |
4425 | + strlen (diagnostic)); | |
4426 | ptrdiff_t message_len = esprintf (buffer, format, use, SSDATA (dirname), | |
4427 | diagnostic); | |
0df02bf3 PE |
4428 | message_dolog (buffer, message_len, 0, STRING_MULTIBYTE (dirname)); |
4429 | SAFE_FREE (); | |
4430 | } | |
85496b8c RS |
4431 | } |
4432 | ||
078e7b4a | 4433 | void |
971de7fb | 4434 | syms_of_lread (void) |
078e7b4a JB |
4435 | { |
4436 | defsubr (&Sread); | |
4437 | defsubr (&Sread_from_string); | |
4438 | defsubr (&Sintern); | |
4439 | defsubr (&Sintern_soft); | |
d007f5c8 | 4440 | defsubr (&Sunintern); |
971a4293 | 4441 | defsubr (&Sget_load_suffixes); |
078e7b4a | 4442 | defsubr (&Sload); |
228d4b1c | 4443 | defsubr (&Seval_buffer); |
078e7b4a JB |
4444 | defsubr (&Seval_region); |
4445 | defsubr (&Sread_char); | |
4446 | defsubr (&Sread_char_exclusive); | |
078e7b4a | 4447 | defsubr (&Sread_event); |
078e7b4a JB |
4448 | defsubr (&Sget_file_char); |
4449 | defsubr (&Smapatoms); | |
86d00812 | 4450 | defsubr (&Slocate_file_internal); |
078e7b4a | 4451 | |
29208e82 | 4452 | DEFVAR_LISP ("obarray", Vobarray, |
5de38842 PJ |
4453 | doc: /* Symbol table for use by `intern' and `read'. |
4454 | It is a vector whose length ought to be prime for best results. | |
4455 | The vector's contents don't make sense if examined from Lisp programs; | |
4456 | to find all the symbols in an obarray, use `mapatoms'. */); | |
078e7b4a | 4457 | |
29208e82 | 4458 | DEFVAR_LISP ("values", Vvalues, |
5de38842 | 4459 | doc: /* List of values of all expressions which were read, evaluated and printed. |
513749ee SM |
4460 | Order is reverse chronological. */); |
4461 | XSYMBOL (intern ("values"))->declared_special = 0; | |
078e7b4a | 4462 | |
29208e82 | 4463 | DEFVAR_LISP ("standard-input", Vstandard_input, |
5de38842 PJ |
4464 | doc: /* Stream for read to get input from. |
4465 | See documentation of `read' for possible values. */); | |
078e7b4a JB |
4466 | Vstandard_input = Qt; |
4467 | ||
29208e82 | 4468 | DEFVAR_LISP ("read-with-symbol-positions", Vread_with_symbol_positions, |
abb13b09 CW |
4469 | doc: /* If non-nil, add position of read symbols to `read-symbol-positions-list'. |
4470 | ||
4471 | If this variable is a buffer, then only forms read from that buffer | |
4472 | will be added to `read-symbol-positions-list'. | |
4473 | If this variable is t, then all read forms will be added. | |
4474 | The effect of all other values other than nil are not currently | |
4475 | defined, although they may be in the future. | |
4476 | ||
4477 | The positions are relative to the last call to `read' or | |
4478 | `read-from-string'. It is probably a bad idea to set this variable at | |
513749ee | 4479 | the toplevel; bind it instead. */); |
abb13b09 CW |
4480 | Vread_with_symbol_positions = Qnil; |
4481 | ||
29208e82 | 4482 | DEFVAR_LISP ("read-symbol-positions-list", Vread_symbol_positions_list, |
d6567030 | 4483 | doc: /* A list mapping read symbols to their positions. |
abb13b09 CW |
4484 | This variable is modified during calls to `read' or |
4485 | `read-from-string', but only when `read-with-symbol-positions' is | |
4486 | non-nil. | |
4487 | ||
4488 | Each element of the list looks like (SYMBOL . CHAR-POSITION), where | |
d6567030 | 4489 | CHAR-POSITION is an integer giving the offset of that occurrence of the |
abb13b09 CW |
4490 | symbol from the position where `read' or `read-from-string' started. |
4491 | ||
4492 | Note that a symbol will appear multiple times in this list, if it was | |
4493 | read multiple times. The list is in the same order as the symbols | |
513749ee | 4494 | were read in. */); |
177c0ea7 | 4495 | Vread_symbol_positions_list = Qnil; |
abb13b09 | 4496 | |
29208e82 | 4497 | DEFVAR_LISP ("read-circle", Vread_circle, |
91f68422 CY |
4498 | doc: /* Non-nil means read recursive structures using #N= and #N# syntax. */); |
4499 | Vread_circle = Qt; | |
4500 | ||
29208e82 | 4501 | DEFVAR_LISP ("load-path", Vload_path, |
fb7ada5f | 4502 | doc: /* List of directories to search for files to load. |
17e0445b GM |
4503 | Each element is a string (directory name) or nil (meaning `default-directory'). |
4504 | Initialized during startup as described in Info node `(elisp)Library Search'. */); | |
078e7b4a | 4505 | |
29208e82 | 4506 | DEFVAR_LISP ("load-suffixes", Vload_suffixes, |
971a4293 LT |
4507 | doc: /* List of suffixes for (compiled or source) Emacs Lisp files. |
4508 | This list should not include the empty string. | |
4509 | `load' and related functions try to append these suffixes, in order, | |
4510 | to the specified file name if a Lisp suffix is allowed or required. */); | |
6c6f1994 PE |
4511 | Vload_suffixes = list2 (build_pure_c_string (".elc"), |
4512 | build_pure_c_string (".el")); | |
29208e82 | 4513 | DEFVAR_LISP ("load-file-rep-suffixes", Vload_file_rep_suffixes, |
971a4293 LT |
4514 | doc: /* List of suffixes that indicate representations of \ |
4515 | the same file. | |
4516 | This list should normally start with the empty string. | |
4517 | ||
4518 | Enabling Auto Compression mode appends the suffixes in | |
4519 | `jka-compr-load-suffixes' to this list and disabling Auto Compression | |
4520 | mode removes them again. `load' and related functions use this list to | |
4521 | determine whether they should look for compressed versions of a file | |
4522 | and, if so, which suffixes they should try to append to the file name | |
4523 | in order to do so. However, if you want to customize which suffixes | |
4524 | the loading functions recognize as compression suffixes, you should | |
4525 | customize `jka-compr-load-suffixes' rather than the present variable. */); | |
6c6f1994 | 4526 | Vload_file_rep_suffixes = list1 (empty_unibyte_string); |
e61b9b87 | 4527 | |
29208e82 | 4528 | DEFVAR_BOOL ("load-in-progress", load_in_progress, |
e0f24100 | 4529 | doc: /* Non-nil if inside of `load'. */); |
cd3520a4 | 4530 | DEFSYM (Qload_in_progress, "load-in-progress"); |
078e7b4a | 4531 | |
29208e82 | 4532 | DEFVAR_LISP ("after-load-alist", Vafter_load_alist, |
de0503df SM |
4533 | doc: /* An alist of functions to be evalled when particular files are loaded. |
4534 | Each element looks like (REGEXP-OR-FEATURE FUNCS...). | |
6bb6da3e AM |
4535 | |
4536 | REGEXP-OR-FEATURE is either a regular expression to match file names, or | |
4537 | a symbol \(a feature name). | |
4538 | ||
4539 | When `load' is run and the file-name argument matches an element's | |
4540 | REGEXP-OR-FEATURE, or when `provide' is run and provides the symbol | |
de0503df | 4541 | REGEXP-OR-FEATURE, the FUNCS in the element are called. |
6bb6da3e AM |
4542 | |
4543 | An error in FORMS does not undo the load, but does prevent execution of | |
4544 | the rest of the FORMS. */); | |
078e7b4a JB |
4545 | Vafter_load_alist = Qnil; |
4546 | ||
29208e82 | 4547 | DEFVAR_LISP ("load-history", Vload_history, |
4801c5fa CY |
4548 | doc: /* Alist mapping loaded file names to symbols and features. |
4549 | Each alist element should be a list (FILE-NAME ENTRIES...), where | |
4550 | FILE-NAME is the name of a file that has been loaded into Emacs. | |
4551 | The file name is absolute and true (i.e. it doesn't contain symlinks). | |
4552 | As an exception, one of the alist elements may have FILE-NAME nil, | |
4553 | for symbols and features not associated with any file. | |
4554 | ||
4555 | The remaining ENTRIES in the alist element describe the functions and | |
4556 | variables defined in that file, the features provided, and the | |
4557 | features required. Each entry has the form `(provide . FEATURE)', | |
4558 | `(require . FEATURE)', `(defun . FUNCTION)', `(autoload . SYMBOL)', | |
69bb1ef7 LMI |
4559 | `(defface . SYMBOL)', or `(t . SYMBOL)'. Entries like `(t . SYMBOL)' |
4560 | may precede a `(defun . FUNCTION)' entry, and means that SYMBOL was an | |
4561 | autoload before this file redefined it as a function. In addition, | |
4562 | entries may also be single symbols, which means that SYMBOL was | |
4563 | defined by `defvar' or `defconst'. | |
0fc213e9 | 4564 | |
b502a9a1 RS |
4565 | During preloading, the file name recorded is relative to the main Lisp |
4566 | directory. These file names are converted to absolute at startup. */); | |
ae321d28 RS |
4567 | Vload_history = Qnil; |
4568 | ||
29208e82 | 4569 | DEFVAR_LISP ("load-file-name", Vload_file_name, |
5de38842 | 4570 | doc: /* Full name of file being loaded by `load'. */); |
20ea2964 RS |
4571 | Vload_file_name = Qnil; |
4572 | ||
29208e82 | 4573 | DEFVAR_LISP ("user-init-file", Vuser_init_file, |
5de38842 | 4574 | doc: /* File name, including directory, of user's initialization file. |
0a25a201 RS |
4575 | If the file loaded had extension `.elc', and the corresponding source file |
4576 | exists, this variable contains the name of source file, suitable for use | |
099de390 JB |
4577 | by functions like `custom-save-all' which edit the init file. |
4578 | While Emacs loads and evaluates the init file, value is the real name | |
4579 | of the file, regardless of whether or not it has the `.elc' extension. */); | |
4116ab9f KH |
4580 | Vuser_init_file = Qnil; |
4581 | ||
29208e82 | 4582 | DEFVAR_LISP ("current-load-list", Vcurrent_load_list, |
5de38842 | 4583 | doc: /* Used for internal purposes by `load'. */); |
ae321d28 RS |
4584 | Vcurrent_load_list = Qnil; |
4585 | ||
29208e82 | 4586 | DEFVAR_LISP ("load-read-function", Vload_read_function, |
5de38842 PJ |
4587 | doc: /* Function used by `load' and `eval-region' for reading expressions. |
4588 | The default is nil, which means use the function `read'. */); | |
84a15045 RS |
4589 | Vload_read_function = Qnil; |
4590 | ||
29208e82 | 4591 | DEFVAR_LISP ("load-source-file-function", Vload_source_file_function, |
76b92fee CS |
4592 | doc: /* Function called in `load' to load an Emacs Lisp source file. |
4593 | The value should be a function for doing code conversion before | |
4594 | reading a source file. It can also be nil, in which case loading is | |
4595 | done without any code conversion. | |
4596 | ||
4597 | If the value is a function, it is called with four arguments, | |
4598 | FULLNAME, FILE, NOERROR, NOMESSAGE. FULLNAME is the absolute name of | |
4599 | the file to load, FILE is the non-absolute name (for messages etc.), | |
4600 | and NOERROR and NOMESSAGE are the corresponding arguments passed to | |
4601 | `load'. The function should return t if the file was loaded. */); | |
fe0e03f3 KH |
4602 | Vload_source_file_function = Qnil; |
4603 | ||
29208e82 | 4604 | DEFVAR_BOOL ("load-force-doc-strings", load_force_doc_strings, |
5de38842 PJ |
4605 | doc: /* Non-nil means `load' should force-load all dynamic doc strings. |
4606 | This is useful when the file being loaded is a temporary copy. */); | |
b2a30870 RS |
4607 | load_force_doc_strings = 0; |
4608 | ||
29208e82 | 4609 | DEFVAR_BOOL ("load-convert-to-unibyte", load_convert_to_unibyte, |
5de38842 PJ |
4610 | doc: /* Non-nil means `read' converts strings to unibyte whenever possible. |
4611 | This is normally bound by `load' and `eval-buffer' to control `read', | |
4612 | and is not meant for users to change. */); | |
94e554db RS |
4613 | load_convert_to_unibyte = 0; |
4614 | ||
29208e82 | 4615 | DEFVAR_LISP ("source-directory", Vsource_directory, |
5de38842 PJ |
4616 | doc: /* Directory in which Emacs sources were found when Emacs was built. |
4617 | You cannot count on them to still be there! */); | |
a90ba1e2 KH |
4618 | Vsource_directory |
4619 | = Fexpand_file_name (build_string ("../"), | |
17e0445b | 4620 | Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH, 0))); |
a90ba1e2 | 4621 | |
29208e82 | 4622 | DEFVAR_LISP ("preloaded-file-list", Vpreloaded_file_list, |
5de38842 | 4623 | doc: /* List of files that were preloaded (when dumping Emacs). */); |
4b104c41 RS |
4624 | Vpreloaded_file_list = Qnil; |
4625 | ||
29208e82 | 4626 | DEFVAR_LISP ("byte-boolean-vars", Vbyte_boolean_vars, |
5de38842 | 4627 | doc: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */); |
1ffcc3b1 DL |
4628 | Vbyte_boolean_vars = Qnil; |
4629 | ||
29208e82 | 4630 | DEFVAR_BOOL ("load-dangerous-libraries", load_dangerous_libraries, |
5de38842 PJ |
4631 | doc: /* Non-nil means load dangerous compiled Lisp files. |
4632 | Some versions of XEmacs use different byte codes than Emacs. These | |
4633 | incompatible byte codes can make Emacs crash when it tries to execute | |
4634 | them. */); | |
da84f340 GM |
4635 | load_dangerous_libraries = 0; |
4636 | ||
29208e82 | 4637 | DEFVAR_BOOL ("force-load-messages", force_load_messages, |
beb0b7f9 EZ |
4638 | doc: /* Non-nil means force printing messages when loading Lisp files. |
4639 | This overrides the value of the NOMESSAGE argument to `load'. */); | |
4640 | force_load_messages = 0; | |
4641 | ||
29208e82 | 4642 | DEFVAR_LISP ("bytecomp-version-regexp", Vbytecomp_version_regexp, |
5de38842 PJ |
4643 | doc: /* Regular expression matching safe to load compiled Lisp files. |
4644 | When Emacs loads a compiled Lisp file, it reads the first 512 bytes | |
4645 | from the file, and matches them against this regular expression. | |
4646 | When the regular expression matches, the file is considered to be safe | |
4647 | to load. See also `load-dangerous-libraries'. */); | |
bb970e67 | 4648 | Vbytecomp_version_regexp |
2a0213a6 | 4649 | = build_pure_c_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)"); |
da84f340 | 4650 | |
14ae4239 | 4651 | DEFSYM (Qlexical_binding, "lexical-binding"); |
8f1d2ef6 | 4652 | DEFVAR_LISP ("lexical-binding", Vlexical_binding, |
f41628b2 LMI |
4653 | doc: /* Whether to use lexical binding when evaluating code. |
4654 | Non-nil means that the code in the current buffer should be evaluated | |
4655 | with lexical binding. | |
1d698799 | 4656 | This variable is automatically set from the file variables of an |
48da7392 GM |
4657 | interpreted Lisp file read using `load'. Unlike other file local |
4658 | variables, this must be set in the first line of a file. */); | |
14ae4239 | 4659 | Vlexical_binding = Qnil; |
b9598260 SM |
4660 | Fmake_variable_buffer_local (Qlexical_binding); |
4661 | ||
29208e82 | 4662 | DEFVAR_LISP ("eval-buffer-list", Veval_buffer_list, |
3f39f996 RS |
4663 | doc: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */); |
4664 | Veval_buffer_list = Qnil; | |
4665 | ||
29208e82 | 4666 | DEFVAR_LISP ("old-style-backquotes", Vold_style_backquotes, |
5aa273b0 SM |
4667 | doc: /* Set to non-nil when `read' encounters an old-style backquote. */); |
4668 | Vold_style_backquotes = Qnil; | |
cd3520a4 | 4669 | DEFSYM (Qold_style_backquotes, "old-style-backquotes"); |
5aa273b0 | 4670 | |
a90ba1e2 KH |
4671 | /* Vsource_directory was initialized in init_lread. */ |
4672 | ||
cd3520a4 JB |
4673 | DEFSYM (Qcurrent_load_list, "current-load-list"); |
4674 | DEFSYM (Qstandard_input, "standard-input"); | |
4675 | DEFSYM (Qread_char, "read-char"); | |
4676 | DEFSYM (Qget_file_char, "get-file-char"); | |
4677 | DEFSYM (Qget_emacs_mule_file_char, "get-emacs-mule-file-char"); | |
4678 | DEFSYM (Qload_force_doc_strings, "load-force-doc-strings"); | |
4679 | ||
4680 | DEFSYM (Qbackquote, "`"); | |
4681 | DEFSYM (Qcomma, ","); | |
4682 | DEFSYM (Qcomma_at, ",@"); | |
4683 | DEFSYM (Qcomma_dot, ",."); | |
4684 | ||
4685 | DEFSYM (Qinhibit_file_name_operation, "inhibit-file-name-operation"); | |
4686 | DEFSYM (Qascii_character, "ascii-character"); | |
4687 | DEFSYM (Qfunction, "function"); | |
4688 | DEFSYM (Qload, "load"); | |
4689 | DEFSYM (Qload_file_name, "load-file-name"); | |
4690 | DEFSYM (Qeval_buffer_list, "eval-buffer-list"); | |
4691 | DEFSYM (Qfile_truename, "file-truename"); | |
4692 | DEFSYM (Qdir_ok, "dir-ok"); | |
4693 | DEFSYM (Qdo_after_load_evaluation, "do-after-load-evaluation"); | |
6bb6da3e | 4694 | |
11938f10 | 4695 | staticpro (&dump_path); |
4ad679f9 EN |
4696 | |
4697 | staticpro (&read_objects); | |
4698 | read_objects = Qnil; | |
9e062b6c | 4699 | staticpro (&seen_list); |
f153db13 | 4700 | seen_list = Qnil; |
177c0ea7 | 4701 | |
7ee3bd7b GM |
4702 | Vloads_in_progress = Qnil; |
4703 | staticpro (&Vloads_in_progress); | |
f19a0f5b | 4704 | |
cd3520a4 JB |
4705 | DEFSYM (Qhash_table, "hash-table"); |
4706 | DEFSYM (Qdata, "data"); | |
4707 | DEFSYM (Qtest, "test"); | |
4708 | DEFSYM (Qsize, "size"); | |
4709 | DEFSYM (Qweakness, "weakness"); | |
4710 | DEFSYM (Qrehash_size, "rehash-size"); | |
4711 | DEFSYM (Qrehash_threshold, "rehash-threshold"); | |
078e7b4a | 4712 | } |