|
428
|
1 /* Lisp parsing and input streams.
|
|
|
2 Copyright (C) 1985-1989, 1992-1995 Free Software Foundation, Inc.
|
|
|
3 Copyright (C) 1995 Tinker Systems.
|
|
|
4 Copyright (C) 1996 Ben Wing.
|
|
|
5
|
|
|
6 This file is part of XEmacs.
|
|
|
7
|
|
|
8 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
9 under the terms of the GNU General Public License as published by the
|
|
|
10 Free Software Foundation; either version 2, or (at your option) any
|
|
|
11 later version.
|
|
|
12
|
|
|
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
16 for more details.
|
|
|
17
|
|
|
18 You should have received a copy of the GNU General Public License
|
|
|
19 along with XEmacs; see the file COPYING. If not, write to
|
|
|
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
21 Boston, MA 02111-1307, USA. */
|
|
|
22
|
|
|
23 /* Synched up with: Mule 2.0, FSF 19.30. */
|
|
|
24
|
|
|
25 /* This file has been Mule-ized. */
|
|
|
26
|
|
|
27 #include <config.h>
|
|
|
28 #include "lisp.h"
|
|
|
29
|
|
|
30 #include "buffer.h"
|
|
|
31 #include "bytecode.h"
|
|
|
32 #include "elhash.h"
|
|
|
33 #include "lstream.h"
|
|
|
34 #include "opaque.h"
|
|
|
35 #ifdef FILE_CODING
|
|
|
36 #include "file-coding.h"
|
|
|
37 #endif
|
|
|
38
|
|
|
39 #include "sysfile.h"
|
|
|
40
|
|
|
41 #ifdef LISP_FLOAT_TYPE
|
|
|
42 #define THIS_FILENAME lread
|
|
|
43 #include "sysfloat.h"
|
|
|
44 #endif /* LISP_FLOAT_TYPE */
|
|
|
45
|
|
|
46 Lisp_Object Qread_char, Qstandard_input;
|
|
|
47 Lisp_Object Qvariable_documentation;
|
|
|
48 #define LISP_BACKQUOTES
|
|
|
49 #ifdef LISP_BACKQUOTES
|
|
|
50 /*
|
|
|
51 Nonzero means inside a new-style backquote
|
|
|
52 with no surrounding parentheses.
|
|
|
53 Fread initializes this to zero, so we need not specbind it
|
|
|
54 or worry about what happens to it when there is an error.
|
|
|
55
|
|
|
56 XEmacs:
|
|
|
57 Nested backquotes are perfectly legal and fail utterly with
|
|
|
58 this silliness. */
|
|
|
59 static int new_backquote_flag, old_backquote_flag;
|
|
|
60 Lisp_Object Qbackquote, Qbacktick, Qcomma, Qcomma_at, Qcomma_dot;
|
|
|
61 #endif
|
|
|
62 Lisp_Object Qvariable_domain; /* I18N3 */
|
|
|
63 Lisp_Object Vvalues, Vstandard_input, Vafter_load_alist;
|
|
|
64 Lisp_Object Qcurrent_load_list;
|
|
|
65 Lisp_Object Qload, Qload_file_name;
|
|
|
66 Lisp_Object Qfset;
|
|
|
67
|
|
|
68 /* Hash-table that maps directory names to hashes of their contents. */
|
|
|
69 static Lisp_Object Vlocate_file_hash_table;
|
|
|
70
|
|
|
71 Lisp_Object Qexists, Qreadable, Qwritable, Qexecutable;
|
|
|
72
|
|
|
73 /* See read_escape() for an explanation of this. */
|
|
|
74 #if 0
|
|
|
75 int fail_on_bucky_bit_character_escapes;
|
|
|
76 #endif
|
|
|
77
|
|
|
78 /* This symbol is also used in fns.c */
|
|
|
79 #define FEATUREP_SYNTAX
|
|
|
80
|
|
|
81 #ifdef FEATUREP_SYNTAX
|
|
|
82 Lisp_Object Qfeaturep;
|
|
|
83 #endif
|
|
|
84
|
|
|
85 /* non-zero if inside `load' */
|
|
|
86 int load_in_progress;
|
|
|
87
|
|
|
88 /* Whether Fload_internal() should check whether the .el is newer
|
|
|
89 when loading .elc */
|
|
|
90 int load_warn_when_source_newer;
|
|
|
91 /* Whether Fload_internal() should check whether the .elc doesn't exist */
|
|
|
92 int load_warn_when_source_only;
|
|
|
93 /* Whether Fload_internal() should ignore .elc files when no suffix is given */
|
|
|
94 int load_ignore_elc_files;
|
|
|
95
|
|
|
96 /* Search path for files to be loaded. */
|
|
|
97 Lisp_Object Vload_path;
|
|
|
98
|
|
|
99 /* Search path for files when dumping. */
|
|
|
100 /* Lisp_Object Vdump_load_path; */
|
|
|
101
|
|
|
102 /* This is the user-visible association list that maps features to
|
|
|
103 lists of defs in their load files. */
|
|
|
104 Lisp_Object Vload_history;
|
|
|
105
|
|
|
106 /* This is used to build the load history. */
|
|
|
107 Lisp_Object Vcurrent_load_list;
|
|
|
108
|
|
|
109 /* Name of file actually being read by `load'. */
|
|
|
110 Lisp_Object Vload_file_name;
|
|
|
111
|
|
|
112 /* Same as Vload_file_name but not Lisp-accessible. This ensures that
|
|
|
113 our #$ checks are reliable. */
|
|
|
114 Lisp_Object Vload_file_name_internal;
|
|
|
115
|
|
|
116 Lisp_Object Vload_file_name_internal_the_purecopy;
|
|
|
117
|
|
|
118 /* Function to use for reading, in `load' and friends. */
|
|
|
119 Lisp_Object Vload_read_function;
|
|
|
120
|
|
|
121 /* The association list of objects read with the #n=object form.
|
|
|
122 Each member of the list has the form (n . object), and is used to
|
|
|
123 look up the object for the corresponding #n# construct.
|
|
|
124 It must be set to nil before all top-level calls to read0. */
|
|
|
125 Lisp_Object Vread_objects;
|
|
|
126
|
|
|
127 /* Nonzero means load should forcibly load all dynamic doc strings. */
|
|
|
128 /* Note that this always happens (with some special behavior) when
|
|
|
129 purify_flag is set. */
|
|
|
130 static int load_force_doc_strings;
|
|
|
131
|
|
|
132 /* List of descriptors now open for Fload_internal. */
|
|
|
133 static Lisp_Object Vload_descriptor_list;
|
|
|
134
|
|
|
135 /* In order to implement "load_force_doc_strings", we keep
|
|
|
136 a list of all the compiled-function objects and such
|
|
|
137 that we have created in the process of loading this file.
|
|
|
138 See the rant below.
|
|
|
139
|
|
|
140 We specbind this just like Vload_file_name, so there's no
|
|
|
141 problems with recursive loading. */
|
|
|
142 static Lisp_Object Vload_force_doc_string_list;
|
|
|
143
|
|
|
144 /* A resizing-buffer stream used to temporarily hold data while reading */
|
|
|
145 static Lisp_Object Vread_buffer_stream;
|
|
|
146
|
|
|
147 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
148 Lisp_Object Vcurrent_compiled_function_annotation;
|
|
|
149 #endif
|
|
|
150
|
|
|
151 static int load_byte_code_version;
|
|
|
152
|
|
|
153 /* An array describing all known built-in structure types */
|
|
|
154 static structure_type_dynarr *the_structure_type_dynarr;
|
|
|
155
|
|
|
156 #if 0 /* FSF defun hack */
|
|
|
157 /* When nonzero, read conses in pure space */
|
|
|
158 static int read_pure;
|
|
|
159 #endif
|
|
|
160
|
|
|
161 #if 0 /* FSF stuff */
|
|
|
162 /* For use within read-from-string (this reader is non-reentrant!!) */
|
|
|
163 static int read_from_string_index;
|
|
|
164 static int read_from_string_limit;
|
|
|
165 #endif
|
|
|
166
|
|
|
167 #if 0 /* More FSF implementation kludges. */
|
|
|
168 /* In order to implement load-force-doc-string, FSF saves the
|
|
|
169 #@-quoted string when it's seen, and goes back and retrieves
|
|
|
170 it later.
|
|
|
171
|
|
|
172 This approach is not only kludgy, but it in general won't work
|
|
|
173 correctly because there's no stack of remembered #@-quoted-strings
|
|
|
174 and those strings don't generally appear in the file in the same
|
|
|
175 order as their #$ references. (Yes, that is amazingly stupid too.
|
|
|
176
|
|
|
177 It would be trivially easy to always encode the #@ string
|
|
|
178 [which is a comment, anyway] in the middle of the (#$ . INT) cons
|
|
|
179 reference. That way, it would be really easy to implement
|
|
|
180 load-force-doc-string in a non-kludgy way by just retrieving the
|
|
|
181 string immediately, because it's delivered on a silver platter.)
|
|
|
182
|
|
|
183 And finally, this stupid approach doesn't work under Mule, or
|
|
|
184 under MS-DOS or Windows NT, or under VMS, or any other place
|
|
|
185 where you either can't do an ftell() or don't get back a byte
|
|
|
186 count.
|
|
|
187
|
|
|
188 Oh, and one more lossage in this approach: If you attempt to
|
|
|
189 dump any ELC files that were compiled with `byte-compile-dynamic'
|
|
|
190 (as opposed to just `byte-compile-dynamic-docstring'), you
|
|
|
191 get hosed. FMH! (as the illustrious JWZ was prone to utter)
|
|
|
192
|
|
|
193 The approach we use is clean, solves all of these problems, and is
|
|
|
194 probably easier to implement anyway. We just save a list of all
|
|
|
195 the containing objects that have (#$ . INT) conses in them (this
|
|
|
196 will only be compiled-function objects and lists), and when the
|
|
|
197 file is finished loading, we go through and fill in all the
|
|
|
198 doc strings at once. */
|
|
|
199
|
|
|
200 /* This contains the last string skipped with #@. */
|
|
|
201 static char *saved_doc_string;
|
|
|
202 /* Length of buffer allocated in saved_doc_string. */
|
|
|
203 static int saved_doc_string_size;
|
|
|
204 /* Length of actual data in saved_doc_string. */
|
|
|
205 static int saved_doc_string_length;
|
|
|
206 /* This is the file position that string came from. */
|
|
|
207 static int saved_doc_string_position;
|
|
|
208 #endif
|
|
|
209
|
|
|
210 EXFUN (Fread_from_string, 3);
|
|
|
211
|
|
|
212 /* When errors are signaled, the actual readcharfun should not be used
|
|
|
213 as an argument if it is an lstream, so that lstreams don't escape
|
|
|
214 to the Lisp level. */
|
|
|
215 #define READCHARFUN_MAYBE(x) (LSTREAMP (x) \
|
|
|
216 ? (build_string ("internal input stream")) \
|
|
|
217 : (x))
|
|
|
218
|
|
|
219
|
|
|
220 static DOESNT_RETURN
|
|
|
221 syntax_error (CONST char *string)
|
|
|
222 {
|
|
|
223 signal_error (Qinvalid_read_syntax,
|
|
|
224 list1 (build_translated_string (string)));
|
|
|
225 }
|
|
|
226
|
|
|
227 static Lisp_Object
|
|
|
228 continuable_syntax_error (CONST char *string)
|
|
|
229 {
|
|
|
230 return Fsignal (Qinvalid_read_syntax,
|
|
|
231 list1 (build_translated_string (string)));
|
|
|
232 }
|
|
|
233
|
|
|
234
|
|
|
235 /* Handle unreading and rereading of characters. */
|
|
|
236 static Emchar
|
|
|
237 readchar (Lisp_Object readcharfun)
|
|
|
238 {
|
|
|
239 /* This function can GC */
|
|
|
240
|
|
|
241 if (BUFFERP (readcharfun))
|
|
|
242 {
|
|
|
243 Emchar c;
|
|
|
244 struct buffer *b = XBUFFER (readcharfun);
|
|
|
245
|
|
|
246 if (!BUFFER_LIVE_P (b))
|
|
|
247 error ("Reading from killed buffer");
|
|
|
248
|
|
|
249 if (BUF_PT (b) >= BUF_ZV (b))
|
|
|
250 return -1;
|
|
|
251 c = BUF_FETCH_CHAR (b, BUF_PT (b));
|
|
|
252 BUF_SET_PT (b, BUF_PT (b) + 1);
|
|
|
253
|
|
|
254 return c;
|
|
|
255 }
|
|
|
256 else if (LSTREAMP (readcharfun))
|
|
|
257 {
|
|
|
258 Emchar c = Lstream_get_emchar (XLSTREAM (readcharfun));
|
|
|
259 #ifdef DEBUG_XEMACS /* testing Mule */
|
|
|
260 static int testing_mule = 0; /* Change via debugger */
|
|
|
261 if (testing_mule) {
|
|
|
262 if (c >= 0x20 && c <= 0x7E) fprintf (stderr, "%c", c);
|
|
|
263 else if (c == '\n') fprintf (stderr, "\\n\n");
|
|
|
264 else fprintf (stderr, "\\%o ", c);
|
|
|
265 }
|
|
|
266 #endif
|
|
|
267 return c;
|
|
|
268 }
|
|
|
269 else if (MARKERP (readcharfun))
|
|
|
270 {
|
|
|
271 Emchar c;
|
|
|
272 Bufpos mpos = marker_position (readcharfun);
|
|
|
273 struct buffer *inbuffer = XMARKER (readcharfun)->buffer;
|
|
|
274
|
|
|
275 if (mpos >= BUF_ZV (inbuffer))
|
|
|
276 return -1;
|
|
|
277 c = BUF_FETCH_CHAR (inbuffer, mpos);
|
|
|
278 set_marker_position (readcharfun, mpos + 1);
|
|
|
279 return c;
|
|
|
280 }
|
|
|
281 else
|
|
|
282 {
|
|
|
283 Lisp_Object tem = call0 (readcharfun);
|
|
|
284
|
|
|
285 if (!CHAR_OR_CHAR_INTP (tem))
|
|
|
286 return -1;
|
|
|
287 return XCHAR_OR_CHAR_INT (tem);
|
|
|
288 }
|
|
|
289 }
|
|
|
290
|
|
|
291 /* Unread the character C in the way appropriate for the stream READCHARFUN.
|
|
|
292 If the stream is a user function, call it with the char as argument. */
|
|
|
293
|
|
|
294 static void
|
|
|
295 unreadchar (Lisp_Object readcharfun, Emchar c)
|
|
|
296 {
|
|
|
297 if (c == -1)
|
|
|
298 /* Don't back up the pointer if we're unreading the end-of-input mark,
|
|
|
299 since readchar didn't advance it when we read it. */
|
|
|
300 ;
|
|
|
301 else if (BUFFERP (readcharfun))
|
|
|
302 BUF_SET_PT (XBUFFER (readcharfun), BUF_PT (XBUFFER (readcharfun)) - 1);
|
|
|
303 else if (LSTREAMP (readcharfun))
|
|
|
304 {
|
|
|
305 Lstream_unget_emchar (XLSTREAM (readcharfun), c);
|
|
|
306 #ifdef DEBUG_XEMACS /* testing Mule */
|
|
|
307 {
|
|
|
308 static int testing_mule = 0; /* Set this using debugger */
|
|
|
309 if (testing_mule)
|
|
|
310 fprintf (stderr,
|
|
|
311 (c >= 0x20 && c <= 0x7E) ? "UU%c" :
|
|
|
312 ((c == '\n') ? "UU\\n\n" : "UU\\%o"), c);
|
|
|
313 }
|
|
|
314 #endif
|
|
|
315 }
|
|
|
316 else if (MARKERP (readcharfun))
|
|
|
317 set_marker_position (readcharfun, marker_position (readcharfun) - 1);
|
|
|
318 else
|
|
|
319 call1 (readcharfun, make_char (c));
|
|
|
320 }
|
|
|
321
|
|
|
322 static Lisp_Object read0 (Lisp_Object readcharfun);
|
|
|
323 static Lisp_Object read1 (Lisp_Object readcharfun);
|
|
|
324 /* allow_dotted_lists means that something like (foo bar . baz)
|
|
|
325 is acceptable. If -1, means check for starting with defun
|
|
|
326 and make structure pure. (not implemented, probably for very
|
|
|
327 good reasons)
|
|
|
328 */
|
|
|
329 /*
|
|
|
330 If check_for_doc_references, look for (#$ . INT) doc references
|
|
|
331 in the list and record if load_force_doc_strings is non-zero.
|
|
|
332 (Such doc references will be destroyed during the loadup phase
|
|
|
333 by replacing with Qzero, because Snarf-documentation will fill
|
|
|
334 them in again.)
|
|
|
335
|
|
|
336 WARNING: If you set this, you sure as hell better not call
|
|
|
337 free_list() on the returned list here. */
|
|
|
338
|
|
|
339 static Lisp_Object read_list (Lisp_Object readcharfun,
|
|
|
340 Emchar terminator,
|
|
|
341 int allow_dotted_lists,
|
|
|
342 int check_for_doc_references);
|
|
|
343
|
|
|
344 static void readevalloop (Lisp_Object readcharfun,
|
|
|
345 Lisp_Object sourcefile,
|
|
|
346 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
347 int printflag);
|
|
|
348
|
|
|
349 static Lisp_Object
|
|
|
350 load_unwind (Lisp_Object stream) /* used as unwind-protect function in load */
|
|
|
351 {
|
|
|
352 Lstream_close (XLSTREAM (stream));
|
|
|
353 if (--load_in_progress < 0)
|
|
|
354 load_in_progress = 0;
|
|
|
355 return Qnil;
|
|
|
356 }
|
|
|
357
|
|
|
358 static Lisp_Object
|
|
|
359 load_descriptor_unwind (Lisp_Object oldlist)
|
|
|
360 {
|
|
|
361 Vload_descriptor_list = oldlist;
|
|
|
362 return Qnil;
|
|
|
363 }
|
|
|
364
|
|
|
365 static Lisp_Object
|
|
|
366 load_file_name_internal_unwind (Lisp_Object oldval)
|
|
|
367 {
|
|
|
368 Vload_file_name_internal = oldval;
|
|
|
369 return Qnil;
|
|
|
370 }
|
|
|
371
|
|
|
372 static Lisp_Object
|
|
|
373 load_file_name_internal_the_purecopy_unwind (Lisp_Object oldval)
|
|
|
374 {
|
|
|
375 Vload_file_name_internal_the_purecopy = oldval;
|
|
|
376 return Qnil;
|
|
|
377 }
|
|
|
378
|
|
|
379 static Lisp_Object
|
|
|
380 load_byte_code_version_unwind (Lisp_Object oldval)
|
|
|
381 {
|
|
|
382 load_byte_code_version = XINT (oldval);
|
|
|
383 return Qnil;
|
|
|
384 }
|
|
|
385
|
|
|
386 /* The plague is coming.
|
|
|
387
|
|
|
388 Ring around the rosy, pocket full of posy,
|
|
|
389 Ashes ashes, they all fall down.
|
|
|
390 */
|
|
|
391 void
|
|
|
392 ebolify_bytecode_constants (Lisp_Object vector)
|
|
|
393 {
|
|
|
394 int len = XVECTOR_LENGTH (vector);
|
|
|
395 int i;
|
|
|
396
|
|
|
397 for (i = 0; i < len; i++)
|
|
|
398 {
|
|
|
399 Lisp_Object el = XVECTOR_DATA (vector)[i];
|
|
|
400
|
|
|
401 /* We don't check for `eq', `equal', and the others that have
|
|
|
402 bytecode opcodes. This might lose if someone passes #'eq or
|
|
|
403 something to `funcall', but who would really do that? As
|
|
|
404 they say in law, we've made a "good-faith effort" to
|
|
|
405 unfuckify ourselves. And doing it this way avoids screwing
|
|
|
406 up args to `make-hash-table' and such. As it is, we have to
|
|
|
407 add an extra Ebola check in decode_weak_list_type(). --ben */
|
|
|
408 if (EQ (el, Qassoc)) el = Qold_assoc;
|
|
|
409 else if (EQ (el, Qdelq)) el = Qold_delq;
|
|
|
410 #if 0
|
|
|
411 /* I think this is a bad idea because it will probably mess
|
|
|
412 with keymap code. */
|
|
|
413 else if (EQ (el, Qdelete)) el = Qold_delete;
|
|
|
414 #endif
|
|
|
415 else if (EQ (el, Qrassq)) el = Qold_rassq;
|
|
|
416 else if (EQ (el, Qrassoc)) el = Qold_rassoc;
|
|
|
417
|
|
|
418 XVECTOR_DATA (vector)[i] = el;
|
|
|
419 }
|
|
|
420 }
|
|
|
421
|
|
|
422 static Lisp_Object
|
|
|
423 pas_de_lache_ici (int fd, Lisp_Object victim)
|
|
|
424 {
|
|
|
425 Lisp_Object tem;
|
|
|
426 EMACS_INT pos;
|
|
|
427
|
|
|
428 if (!INTP (XCDR (victim)))
|
|
|
429 signal_simple_error ("Bogus doc string reference", victim);
|
|
|
430 pos = XINT (XCDR (victim));
|
|
|
431 if (pos < 0)
|
|
|
432 pos = -pos; /* kludge to mark a user variable */
|
|
|
433 tem = unparesseuxify_doc_string (fd, pos, 0, Vload_file_name_internal);
|
|
|
434 if (!STRINGP (tem))
|
|
|
435 signal_error (Qerror, tem);
|
|
|
436 return tem;
|
|
|
437 }
|
|
|
438
|
|
|
439 static Lisp_Object
|
|
|
440 load_force_doc_string_unwind (Lisp_Object oldlist)
|
|
|
441 {
|
|
|
442 struct gcpro gcpro1;
|
|
|
443 Lisp_Object list = Vload_force_doc_string_list;
|
|
|
444 Lisp_Object tail;
|
|
|
445 int fd = XINT (XCAR (Vload_descriptor_list));
|
|
|
446
|
|
|
447 GCPRO1 (list);
|
|
|
448 /* restore the old value first just in case an error occurs. */
|
|
|
449 Vload_force_doc_string_list = oldlist;
|
|
|
450
|
|
|
451 LIST_LOOP (tail, list)
|
|
|
452 {
|
|
|
453 Lisp_Object john = Fcar (tail);
|
|
|
454 if (CONSP (john))
|
|
|
455 {
|
|
|
456 assert (CONSP (XCAR (john)));
|
|
|
457 assert (!purify_flag); /* should have been handled in read_list() */
|
|
|
458 XCAR (john) = pas_de_lache_ici (fd, XCAR (john));
|
|
|
459 }
|
|
|
460 else
|
|
|
461 {
|
|
|
462 Lisp_Object doc;
|
|
|
463
|
|
|
464 assert (COMPILED_FUNCTIONP (john));
|
|
|
465 if (CONSP (XCOMPILED_FUNCTION (john)->instructions))
|
|
|
466 {
|
|
|
467 struct gcpro ngcpro1;
|
|
|
468 Lisp_Object juan = (pas_de_lache_ici
|
|
|
469 (fd, XCOMPILED_FUNCTION (john)->instructions));
|
|
|
470 Lisp_Object ivan;
|
|
|
471
|
|
|
472 NGCPRO1 (juan);
|
|
|
473 ivan = Fread (juan);
|
|
|
474 if (!CONSP (ivan))
|
|
|
475 signal_simple_error ("invalid lazy-loaded byte code", ivan);
|
|
|
476 XCOMPILED_FUNCTION (john)->instructions = XCAR (ivan);
|
|
|
477 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
478 if (XCOMPILED_FUNCTION (john)->flags.ebolified
|
|
|
479 && VECTORP (XCDR (ivan)))
|
|
|
480 ebolify_bytecode_constants (XCDR (ivan));
|
|
|
481 XCOMPILED_FUNCTION (john)->constants = XCDR (ivan);
|
|
|
482 NUNGCPRO;
|
|
|
483 }
|
|
|
484 doc = compiled_function_documentation (XCOMPILED_FUNCTION (john));
|
|
|
485 if (CONSP (doc))
|
|
|
486 {
|
|
|
487 assert (!purify_flag); /* should have been handled in
|
|
|
488 read_compiled_function() */
|
|
|
489 doc = pas_de_lache_ici (fd, doc);
|
|
|
490 set_compiled_function_documentation (XCOMPILED_FUNCTION (john),
|
|
|
491 doc);
|
|
|
492 }
|
|
|
493 }
|
|
|
494 }
|
|
|
495
|
|
|
496 if (!NILP (list))
|
|
|
497 free_list (list);
|
|
|
498
|
|
|
499 UNGCPRO;
|
|
|
500 return Qnil;
|
|
|
501 }
|
|
|
502
|
|
|
503 /* Close all descriptors in use for Fload_internal.
|
|
|
504 This is used when starting a subprocess. */
|
|
|
505
|
|
|
506 void
|
|
|
507 close_load_descs (void)
|
|
|
508 {
|
|
|
509 Lisp_Object tail;
|
|
|
510 LIST_LOOP (tail, Vload_descriptor_list)
|
|
|
511 close (XINT (XCAR (tail)));
|
|
|
512 }
|
|
|
513
|
|
|
514 #ifdef I18N3
|
|
|
515 Lisp_Object Vfile_domain;
|
|
|
516
|
|
|
517 Lisp_Object
|
|
|
518 restore_file_domain (Lisp_Object val)
|
|
|
519 {
|
|
|
520 Vfile_domain = val;
|
|
|
521 return Qnil;
|
|
|
522 }
|
|
|
523 #endif /* I18N3 */
|
|
|
524
|
|
|
525 DEFUN ("load-internal", Fload_internal, 1, 6, 0, /*
|
|
|
526 Execute a file of Lisp code named FILE; no coding-system frobbing.
|
|
|
527 This function is identical to `load' except for the handling of the
|
|
|
528 CODESYS and USED-CODESYS arguments under XEmacs/Mule. (When Mule
|
|
|
529 support is not present, both functions are identical and ignore the
|
|
|
530 CODESYS and USED-CODESYS arguments.)
|
|
|
531
|
|
|
532 If support for Mule exists in this Emacs, the file is decoded
|
|
|
533 according to CODESYS; if omitted, no conversion happens. If
|
|
|
534 USED-CODESYS is non-nil, it should be a symbol, and the actual coding
|
|
|
535 system that was used for the decoding is stored into it. It will in
|
|
|
536 general be different from CODESYS if CODESYS specifies automatic
|
|
|
537 encoding detection or end-of-line detection.
|
|
|
538 */
|
|
|
539 (file, no_error, nomessage, nosuffix, codesys, used_codesys))
|
|
|
540 {
|
|
|
541 /* This function can GC */
|
|
|
542 int fd = -1;
|
|
|
543 int speccount = specpdl_depth ();
|
|
|
544 int source_only = 0;
|
|
|
545 Lisp_Object newer = Qnil;
|
|
|
546 Lisp_Object handler = Qnil;
|
|
|
547 Lisp_Object found = Qnil;
|
|
|
548 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
549 int reading_elc = 0;
|
|
|
550 int message_p = NILP (nomessage);
|
|
|
551 /*#ifdef DEBUG_XEMACS*/
|
|
|
552 static Lisp_Object last_file_loaded;
|
|
|
553 /*#endif*/
|
|
|
554 struct stat s1, s2;
|
|
|
555 GCPRO3 (file, newer, found);
|
|
|
556
|
|
|
557 CHECK_STRING (file);
|
|
|
558
|
|
|
559 /*#ifdef DEBUG_XEMACS*/
|
|
|
560 if (purify_flag && noninteractive)
|
|
|
561 {
|
|
|
562 message_p = 1;
|
|
|
563 last_file_loaded = file;
|
|
|
564 }
|
|
|
565 /*#endif / * DEBUG_XEMACS */
|
|
|
566
|
|
|
567 /* If file name is magic, call the handler. */
|
|
|
568 handler = Ffind_file_name_handler (file, Qload);
|
|
|
569 if (!NILP (handler))
|
|
|
570 RETURN_UNGCPRO (call5 (handler, Qload, file, no_error,
|
|
|
571 nomessage, nosuffix));
|
|
|
572
|
|
|
573 /* Do this after the handler to avoid
|
|
|
574 the need to gcpro noerror, nomessage and nosuffix.
|
|
|
575 (Below here, we care only whether they are nil or not.) */
|
|
|
576 file = Fsubstitute_in_file_name (file);
|
|
|
577 #ifdef FILE_CODING
|
|
|
578 if (!NILP (used_codesys))
|
|
|
579 CHECK_SYMBOL (used_codesys);
|
|
|
580 #endif
|
|
|
581
|
|
|
582 /* Avoid weird lossage with null string as arg,
|
|
|
583 since it would try to load a directory as a Lisp file.
|
|
|
584 Unix truly sucks. */
|
|
|
585 if (XSTRING_LENGTH (file) > 0)
|
|
|
586 {
|
|
|
587 char *foundstr;
|
|
|
588 int foundlen;
|
|
|
589
|
|
|
590 fd = locate_file (Vload_path, file,
|
|
|
591 ((!NILP (nosuffix)) ? Qnil :
|
|
|
592 build_string (load_ignore_elc_files ? ".el:" :
|
|
|
593 ".elc:.el:")),
|
|
|
594 &found,
|
|
|
595 -1);
|
|
|
596
|
|
|
597 if (fd < 0)
|
|
|
598 {
|
|
|
599 if (NILP (no_error))
|
|
|
600 signal_file_error ("Cannot open load file", file);
|
|
|
601 else
|
|
|
602 {
|
|
|
603 UNGCPRO;
|
|
|
604 return Qnil;
|
|
|
605 }
|
|
|
606 }
|
|
|
607
|
|
|
608 foundstr = (char *) alloca (XSTRING_LENGTH (found) + 1);
|
|
|
609 strcpy (foundstr, (char *) XSTRING_DATA (found));
|
|
|
610 foundlen = strlen (foundstr);
|
|
|
611
|
|
|
612 /* The omniscient JWZ thinks this is worthless, but I beg to
|
|
|
613 differ. --ben */
|
|
|
614 if (load_ignore_elc_files)
|
|
|
615 {
|
|
|
616 newer = Ffile_name_nondirectory (found);
|
|
|
617 }
|
|
|
618 else if (load_warn_when_source_newer &&
|
|
|
619 !memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
620 {
|
|
|
621 if (! fstat (fd, &s1)) /* can't fail, right? */
|
|
|
622 {
|
|
|
623 int result;
|
|
|
624 /* temporarily hack the 'c' off the end of the filename */
|
|
|
625 foundstr[foundlen - 1] = '\0';
|
|
|
626 result = stat (foundstr, &s2);
|
|
|
627 if (result >= 0 &&
|
|
|
628 (unsigned) s1.st_mtime < (unsigned) s2.st_mtime)
|
|
|
629 {
|
|
|
630 Lisp_Object newer_name = make_string ((Bufbyte *) foundstr,
|
|
|
631 foundlen - 1);
|
|
|
632 struct gcpro nngcpro1;
|
|
|
633 NNGCPRO1 (newer_name);
|
|
|
634 newer = Ffile_name_nondirectory (newer_name);
|
|
|
635 NNUNGCPRO;
|
|
|
636 }
|
|
|
637 /* put the 'c' back on (kludge-o-rama) */
|
|
|
638 foundstr[foundlen - 1] = 'c';
|
|
|
639 }
|
|
|
640 }
|
|
|
641 else if (load_warn_when_source_only &&
|
|
|
642 /* `found' ends in ".el" */
|
|
|
643 !memcmp (".el", foundstr + foundlen - 3, 3) &&
|
|
|
644 /* `file' does not end in ".el" */
|
|
|
645 memcmp (".el",
|
|
|
646 XSTRING_DATA (file) + XSTRING_LENGTH (file) - 3,
|
|
|
647 3))
|
|
|
648 {
|
|
|
649 source_only = 1;
|
|
|
650 }
|
|
|
651
|
|
|
652 if (!memcmp (".elc", foundstr + foundlen - 4, 4))
|
|
|
653 reading_elc = 1;
|
|
|
654 }
|
|
|
655
|
|
|
656 #define PRINT_LOADING_MESSAGE(done) do { \
|
|
|
657 if (load_ignore_elc_files) \
|
|
|
658 { \
|
|
|
659 if (message_p) \
|
|
|
660 message ("Loading %s..." done, XSTRING_DATA (newer)); \
|
|
|
661 } \
|
|
|
662 else if (!NILP (newer)) \
|
|
|
663 message ("Loading %s..." done " (file %s is newer)", \
|
|
|
664 XSTRING_DATA (file), \
|
|
|
665 XSTRING_DATA (newer)); \
|
|
|
666 else if (source_only) \
|
|
|
667 message ("Loading %s..." done " (file %s.elc does not exist)", \
|
|
|
668 XSTRING_DATA (file), \
|
|
|
669 XSTRING_DATA (Ffile_name_nondirectory (file))); \
|
|
|
670 else if (message_p) \
|
|
|
671 message ("Loading %s..." done, XSTRING_DATA (file)); \
|
|
|
672 } while (0)
|
|
|
673
|
|
|
674 PRINT_LOADING_MESSAGE ("");
|
|
|
675
|
|
|
676 {
|
|
|
677 /* Lisp_Object's must be malloc'ed, not stack-allocated */
|
|
|
678 Lisp_Object lispstream = Qnil;
|
|
|
679 CONST int block_size = 8192;
|
|
|
680 struct gcpro ngcpro1;
|
|
|
681
|
|
|
682 NGCPRO1 (lispstream);
|
|
|
683 lispstream = make_filedesc_input_stream (fd, 0, -1, LSTR_CLOSING);
|
|
|
684 /* 64K is used for normal files; 8K should be OK here because Lisp
|
|
|
685 files aren't really all that big. */
|
|
|
686 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
687 block_size);
|
|
|
688 #ifdef FILE_CODING
|
|
|
689 lispstream = make_decoding_input_stream
|
|
|
690 (XLSTREAM (lispstream), Fget_coding_system (codesys));
|
|
|
691 Lstream_set_buffering (XLSTREAM (lispstream), LSTREAM_BLOCKN_BUFFERED,
|
|
|
692 block_size);
|
|
|
693 #endif
|
|
|
694 /* NOTE: Order of these is very important. Don't rearrange them. */
|
|
|
695 record_unwind_protect (load_unwind, lispstream);
|
|
|
696 record_unwind_protect (load_descriptor_unwind, Vload_descriptor_list);
|
|
|
697 record_unwind_protect (load_file_name_internal_unwind,
|
|
|
698 Vload_file_name_internal);
|
|
|
699 record_unwind_protect (load_file_name_internal_the_purecopy_unwind,
|
|
|
700 Vload_file_name_internal_the_purecopy);
|
|
|
701 record_unwind_protect (load_force_doc_string_unwind,
|
|
|
702 Vload_force_doc_string_list);
|
|
|
703 Vload_file_name_internal = found;
|
|
|
704 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
705 specbind (Qload_file_name, found);
|
|
|
706 Vload_descriptor_list = Fcons (make_int (fd), Vload_descriptor_list);
|
|
|
707 Vload_force_doc_string_list = Qnil;
|
|
|
708 #ifdef I18N3
|
|
|
709 record_unwind_protect (restore_file_domain, Vfile_domain);
|
|
|
710 Vfile_domain = Qnil; /* set it to nil; a call to #'domain will set it. */
|
|
|
711 #endif
|
|
|
712 load_in_progress++;
|
|
|
713
|
|
|
714 /* Now determine what sort of ELC file we're reading in. */
|
|
|
715 record_unwind_protect (load_byte_code_version_unwind,
|
|
|
716 make_int (load_byte_code_version));
|
|
|
717 if (reading_elc)
|
|
|
718 {
|
|
|
719 char elc_header[8];
|
|
|
720 int num_read;
|
|
|
721
|
|
|
722 num_read = Lstream_read (XLSTREAM (lispstream), elc_header, 8);
|
|
|
723 if (num_read < 8
|
|
|
724 || strncmp (elc_header, ";ELC", 4))
|
|
|
725 {
|
|
|
726 /* Huh? Probably not a valid ELC file. */
|
|
|
727 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
728 Lstream_unread (XLSTREAM (lispstream), elc_header, num_read);
|
|
|
729 }
|
|
|
730 else
|
|
|
731 load_byte_code_version = elc_header[4];
|
|
|
732 }
|
|
|
733 else
|
|
|
734 load_byte_code_version = 100; /* no Ebolification needed */
|
|
|
735
|
|
|
736 readevalloop (lispstream, file, Feval, 0);
|
|
|
737 #ifdef FILE_CODING
|
|
|
738 if (!NILP (used_codesys))
|
|
|
739 Fset (used_codesys,
|
|
|
740 XCODING_SYSTEM_NAME
|
|
|
741 (decoding_stream_coding_system (XLSTREAM (lispstream))));
|
|
|
742 #endif
|
|
|
743 unbind_to (speccount, Qnil);
|
|
|
744
|
|
|
745 NUNGCPRO;
|
|
|
746 }
|
|
|
747
|
|
|
748 {
|
|
|
749 Lisp_Object tem;
|
|
|
750 /* #### Disgusting kludge */
|
|
|
751 /* Run any load-hooks for this file. */
|
|
|
752 /* #### An even more disgusting kludge. There is horrible code */
|
|
|
753 /* that is relying on the fact that dumped lisp files are found */
|
|
|
754 /* via `load-path' search. */
|
|
|
755 Lisp_Object name = file;
|
|
|
756
|
|
|
757 if (!NILP(Ffile_name_absolute_p(file)))
|
|
|
758 {
|
|
|
759 name = Ffile_name_nondirectory(file);
|
|
|
760 }
|
|
|
761
|
|
|
762 {
|
|
|
763 struct gcpro ngcpro1;
|
|
|
764
|
|
|
765 NGCPRO1 (name);
|
|
|
766 tem = Fassoc (name, Vafter_load_alist);
|
|
|
767 NUNGCPRO;
|
|
|
768 }
|
|
|
769 if (!NILP (tem))
|
|
|
770 {
|
|
|
771 struct gcpro ngcpro1;
|
|
|
772
|
|
|
773 NGCPRO1 (tem);
|
|
|
774 /* Use eval so that errors give a semi-meaningful backtrace. --Stig */
|
|
|
775 tem = Fcons (Qprogn, Fcdr (tem));
|
|
|
776 Feval (tem);
|
|
|
777 NUNGCPRO;
|
|
|
778 }
|
|
|
779 }
|
|
|
780
|
|
|
781 /*#ifdef DEBUG_XEMACS*/
|
|
|
782 if (purify_flag && noninteractive)
|
|
|
783 {
|
|
|
784 if (!EQ (last_file_loaded, file))
|
|
|
785 message ("Loading %s ...done", XSTRING_DATA (file));
|
|
|
786 }
|
|
|
787 /*#endif / * DEBUG_XEMACS */
|
|
|
788
|
|
|
789 if (!noninteractive)
|
|
|
790 PRINT_LOADING_MESSAGE ("done");
|
|
|
791
|
|
|
792 UNGCPRO;
|
|
|
793 return Qt;
|
|
|
794 }
|
|
|
795
|
|
|
796
|
|
|
797 /* ------------------------------- */
|
|
|
798 /* locate_file */
|
|
|
799 /* ------------------------------- */
|
|
|
800
|
|
|
801 static int
|
|
|
802 decode_mode_1 (Lisp_Object mode)
|
|
|
803 {
|
|
|
804 if (EQ (mode, Qexists))
|
|
|
805 return F_OK;
|
|
|
806 else if (EQ (mode, Qexecutable))
|
|
|
807 return X_OK;
|
|
|
808 else if (EQ (mode, Qwritable))
|
|
|
809 return W_OK;
|
|
|
810 else if (EQ (mode, Qreadable))
|
|
|
811 return R_OK;
|
|
|
812 else if (INTP (mode))
|
|
|
813 {
|
|
|
814 check_int_range (XINT (mode), 0, 7);
|
|
|
815 return XINT (mode);
|
|
|
816 }
|
|
|
817 else
|
|
|
818 signal_simple_error ("Invalid value", mode);
|
|
|
819 return 0; /* unreached */
|
|
|
820 }
|
|
|
821
|
|
|
822 static int
|
|
|
823 decode_mode (Lisp_Object mode)
|
|
|
824 {
|
|
|
825 if (NILP (mode))
|
|
|
826 return R_OK;
|
|
|
827 else if (CONSP (mode))
|
|
|
828 {
|
|
|
829 Lisp_Object tail;
|
|
|
830 int mask = 0;
|
|
|
831 EXTERNAL_LIST_LOOP (tail, mode)
|
|
|
832 mask |= decode_mode_1 (XCAR (tail));
|
|
|
833 return mask;
|
|
|
834 }
|
|
|
835 else
|
|
|
836 return decode_mode_1 (mode);
|
|
|
837 }
|
|
|
838
|
|
|
839 DEFUN ("locate-file", Flocate_file, 2, 4, 0, /*
|
|
|
840 Search for FILENAME through PATH-LIST.
|
|
|
841
|
|
|
842 If SUFFIXES is non-nil, it should be a list of suffixes to append to
|
|
|
843 file name when searching.
|
|
|
844
|
|
|
845 If MODE is non-nil, it should be a symbol or a list of symbol representing
|
|
|
846 requirements. Allowed symbols are `exists', `executable', `writable', and
|
|
|
847 `readable'. If MODE is nil, it defaults to `readable'.
|
|
|
848
|
|
|
849 `locate-file' keeps hash tables of the directories it searches through,
|
|
|
850 in order to speed things up. It tries valiantly to not get confused in
|
|
|
851 the face of a changing and unpredictable environment, but can occasionally
|
|
|
852 get tripped up. In this case, you will have to call
|
|
|
853 `locate-file-clear-hashing' to get it back on track. See that function
|
|
|
854 for details.
|
|
|
855 */
|
|
|
856 (filename, path_list, suffixes, mode))
|
|
|
857 {
|
|
|
858 /* This function can GC */
|
|
|
859 Lisp_Object tp;
|
|
|
860
|
|
|
861 CHECK_STRING (filename);
|
|
|
862
|
|
|
863 if (LISTP (suffixes))
|
|
|
864 {
|
|
|
865 Lisp_Object tail;
|
|
|
866 EXTERNAL_LIST_LOOP (tail, suffixes)
|
|
|
867 CHECK_STRING (XCAR (tail));
|
|
|
868 }
|
|
|
869 else
|
|
|
870 CHECK_STRING (suffixes);
|
|
|
871
|
|
|
872 locate_file (path_list, filename, suffixes, &tp, decode_mode (mode));
|
|
|
873 return tp;
|
|
|
874 }
|
|
|
875
|
|
|
876 /* Recalculate the hash table for the given string. DIRECTORY should
|
|
|
877 better have been through Fexpand_file_name() by now. */
|
|
|
878
|
|
|
879 static Lisp_Object
|
|
|
880 locate_file_refresh_hashing (Lisp_Object directory)
|
|
|
881 {
|
|
|
882 Lisp_Object hash =
|
|
|
883 make_directory_hash_table ((char *) XSTRING_DATA (directory));
|
|
|
884
|
|
|
885 if (!NILP (hash))
|
|
|
886 Fputhash (directory, hash, Vlocate_file_hash_table);
|
|
|
887 return hash;
|
|
|
888 }
|
|
|
889
|
|
|
890 /* find the hash table for the given directory, recalculating if necessary */
|
|
|
891
|
|
|
892 static Lisp_Object
|
|
|
893 locate_file_find_directory_hash_table (Lisp_Object directory)
|
|
|
894 {
|
|
|
895 Lisp_Object hash = Fgethash (directory, Vlocate_file_hash_table, Qnil);
|
|
|
896 if (NILP (hash))
|
|
|
897 return locate_file_refresh_hashing (directory);
|
|
|
898 else
|
|
|
899 return hash;
|
|
|
900 }
|
|
|
901
|
|
|
902 /* The SUFFIXES argument in any of the locate_file* functions can be
|
|
|
903 nil, a list, or a string (for backward compatibility), with the
|
|
|
904 following semantics:
|
|
|
905
|
|
|
906 a) nil - no suffix, just search for file name intact
|
|
|
907 (semantically different from "empty suffix list", which
|
|
|
908 would be meaningless.)
|
|
|
909 b) list - list of suffixes to append to file name. Each of these
|
|
|
910 must be a string.
|
|
|
911 c) string - colon-separated suffixes to append to file name (backward
|
|
|
912 compatibility).
|
|
|
913
|
|
|
914 All of this got hairy, so I decided to use a mapper. Calling a
|
|
|
915 function for each suffix shouldn't slow things down, since
|
|
|
916 locate_file is rarely called with enough suffixes for funcalls to
|
|
|
917 make any difference. */
|
|
|
918
|
|
|
919 /* Map FUN over SUFFIXES, as described above. FUN will be called with a
|
|
|
920 char * containing the current file name, and ARG. Mapping stops when
|
|
|
921 FUN returns non-zero. */
|
|
|
922 static void
|
|
|
923 locate_file_map_suffixes (Lisp_Object filename, Lisp_Object suffixes,
|
|
|
924 int (*fun) (char *, void *),
|
|
|
925 void *arg)
|
|
|
926 {
|
|
|
927 /* This function can GC */
|
|
|
928 char *fn;
|
|
|
929 int fn_len, max;
|
|
|
930
|
|
|
931 /* Calculate maximum size of any filename made from
|
|
|
932 this path element/specified file name and any possible suffix. */
|
|
|
933 if (CONSP (suffixes))
|
|
|
934 {
|
|
|
935 /* We must traverse the list, so why not do it right. */
|
|
|
936 Lisp_Object tail;
|
|
|
937 max = 0;
|
|
|
938 LIST_LOOP (tail, suffixes)
|
|
|
939 {
|
|
|
940 if (XSTRING_LENGTH (XCAR (tail)) > max)
|
|
|
941 max = XSTRING_LENGTH (XCAR (tail));
|
|
|
942 }
|
|
|
943 }
|
|
|
944 else if (NILP (suffixes))
|
|
|
945 max = 0;
|
|
|
946 else
|
|
|
947 /* Just take the easy way out */
|
|
|
948 max = XSTRING_LENGTH (suffixes);
|
|
|
949
|
|
|
950 fn_len = XSTRING_LENGTH (filename);
|
|
|
951 fn = (char *) alloca (max + fn_len + 1);
|
|
|
952 memcpy (fn, (char *) XSTRING_DATA (filename), fn_len);
|
|
|
953
|
|
|
954 /* Loop over suffixes. */
|
|
|
955 if (!STRINGP (suffixes))
|
|
|
956 {
|
|
|
957 if (NILP (suffixes))
|
|
|
958 {
|
|
|
959 /* Case a) discussed in the comment above. */
|
|
|
960 fn[fn_len] = 0;
|
|
|
961 if ((*fun) (fn, arg))
|
|
|
962 return;
|
|
|
963 }
|
|
|
964 else
|
|
|
965 {
|
|
|
966 /* Case b) */
|
|
|
967 Lisp_Object tail;
|
|
|
968 LIST_LOOP (tail, suffixes)
|
|
|
969 {
|
|
|
970 memcpy (fn + fn_len, XSTRING_DATA (XCAR (tail)),
|
|
|
971 XSTRING_LENGTH (XCAR (tail)));
|
|
|
972 fn[fn_len + XSTRING_LENGTH (XCAR (tail))] = 0;
|
|
|
973 if ((*fun) (fn, arg))
|
|
|
974 return;
|
|
|
975 }
|
|
|
976 }
|
|
|
977 }
|
|
|
978 else
|
|
|
979 {
|
|
|
980 /* Case c) */
|
|
|
981 CONST char *nsuffix = (CONST char *) XSTRING_DATA (suffixes);
|
|
|
982
|
|
|
983 while (1)
|
|
|
984 {
|
|
|
985 char *esuffix = (char *) strchr (nsuffix, ':');
|
|
|
986 int lsuffix = ((esuffix) ? (esuffix - nsuffix) : strlen (nsuffix));
|
|
|
987
|
|
|
988 /* Concatenate path element/specified name with the suffix. */
|
|
|
989 strncpy (fn + fn_len, nsuffix, lsuffix);
|
|
|
990 fn[fn_len + lsuffix] = 0;
|
|
|
991
|
|
|
992 if ((*fun) (fn, arg))
|
|
|
993 return;
|
|
|
994
|
|
|
995 /* Advance to next suffix. */
|
|
|
996 if (esuffix == 0)
|
|
|
997 break;
|
|
|
998 nsuffix += lsuffix + 1;
|
|
|
999 }
|
|
|
1000 }
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 struct locate_file_in_directory_mapper_closure {
|
|
|
1004 int fd;
|
|
|
1005 Lisp_Object *storeptr;
|
|
|
1006 int mode;
|
|
|
1007 };
|
|
|
1008
|
|
|
1009 static int
|
|
|
1010 locate_file_in_directory_mapper (char *fn, void *arg)
|
|
|
1011 {
|
|
|
1012 struct locate_file_in_directory_mapper_closure *closure =
|
|
|
1013 (struct locate_file_in_directory_mapper_closure *)arg;
|
|
|
1014 struct stat st;
|
|
|
1015
|
|
|
1016 /* Ignore file if it's a directory. */
|
|
|
1017 if (stat (fn, &st) >= 0
|
|
|
1018 && (st.st_mode & S_IFMT) != S_IFDIR)
|
|
|
1019 {
|
|
|
1020 /* Check that we can access or open it. */
|
|
|
1021 if (closure->mode >= 0)
|
|
|
1022 closure->fd = access (fn, closure->mode);
|
|
|
1023 else
|
|
|
1024 closure->fd = open (fn, O_RDONLY | OPEN_BINARY, 0);
|
|
|
1025
|
|
|
1026 if (closure->fd >= 0)
|
|
|
1027 {
|
|
|
1028 /* We succeeded; return this descriptor and filename. */
|
|
|
1029 if (closure->storeptr)
|
|
|
1030 *closure->storeptr = build_string (fn);
|
|
|
1031
|
|
|
1032 #ifndef WINDOWSNT
|
|
|
1033 /* If we actually opened the file, set close-on-exec flag
|
|
|
1034 on the new descriptor so that subprocesses can't whack
|
|
|
1035 at it. */
|
|
|
1036 if (closure->mode < 0)
|
|
|
1037 (void) fcntl (closure->fd, F_SETFD, FD_CLOEXEC);
|
|
|
1038 #endif
|
|
|
1039
|
|
|
1040 return 1;
|
|
|
1041 }
|
|
|
1042 }
|
|
|
1043 /* Keep mapping. */
|
|
|
1044 return 0;
|
|
|
1045 }
|
|
|
1046
|
|
|
1047
|
|
|
1048 /* look for STR in PATH, optionally adding SUFFIXES. DIRECTORY need
|
|
|
1049 not have been expanded. */
|
|
|
1050
|
|
|
1051 static int
|
|
|
1052 locate_file_in_directory (Lisp_Object directory, Lisp_Object str,
|
|
|
1053 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1054 int mode)
|
|
|
1055 {
|
|
|
1056 /* This function can GC */
|
|
|
1057 struct locate_file_in_directory_mapper_closure closure;
|
|
|
1058 Lisp_Object filename = Qnil;
|
|
|
1059 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1060
|
|
|
1061 GCPRO3 (directory, str, filename);
|
|
|
1062
|
|
|
1063 filename = Fexpand_file_name (str, directory);
|
|
|
1064 if (NILP (filename) || NILP (Ffile_name_absolute_p (filename)))
|
|
|
1065 /* If there are non-absolute elts in PATH (eg ".") */
|
|
|
1066 /* Of course, this could conceivably lose if luser sets
|
|
|
1067 default-directory to be something non-absolute ... */
|
|
|
1068 {
|
|
|
1069 if (NILP (filename))
|
|
|
1070 /* NIL means current directory */
|
|
|
1071 filename = current_buffer->directory;
|
|
|
1072 else
|
|
|
1073 filename = Fexpand_file_name (filename,
|
|
|
1074 current_buffer->directory);
|
|
|
1075 if (NILP (Ffile_name_absolute_p (filename)))
|
|
|
1076 {
|
|
|
1077 /* Give up on this directory! */
|
|
|
1078 UNGCPRO;
|
|
|
1079 return -1;
|
|
|
1080 }
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 closure.fd = -1;
|
|
|
1084 closure.storeptr = storeptr;
|
|
|
1085 closure.mode = mode;
|
|
|
1086
|
|
|
1087 locate_file_map_suffixes (filename, suffixes, locate_file_in_directory_mapper,
|
|
|
1088 &closure);
|
|
|
1089
|
|
|
1090 UNGCPRO;
|
|
|
1091 return closure.fd;
|
|
|
1092 }
|
|
|
1093
|
|
|
1094 /* do the same as locate_file() but don't use any hash tables. */
|
|
|
1095
|
|
|
1096 static int
|
|
|
1097 locate_file_without_hash (Lisp_Object path, Lisp_Object str,
|
|
|
1098 Lisp_Object suffixes, Lisp_Object *storeptr,
|
|
|
1099 int mode)
|
|
|
1100 {
|
|
|
1101 /* This function can GC */
|
|
|
1102 int absolute = !NILP (Ffile_name_absolute_p (str));
|
|
|
1103
|
|
|
1104 EXTERNAL_LIST_LOOP (path, path)
|
|
|
1105 {
|
|
|
1106 int val = locate_file_in_directory (XCAR (path), str, suffixes, storeptr,
|
|
|
1107 mode);
|
|
|
1108 if (val >= 0)
|
|
|
1109 return val;
|
|
|
1110 if (absolute)
|
|
|
1111 break;
|
|
|
1112 }
|
|
|
1113 return -1;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 static int
|
|
|
1117 locate_file_construct_suffixed_files_mapper (char *fn, void *arg)
|
|
|
1118 {
|
|
|
1119 Lisp_Object *tail = (Lisp_Object *)arg;
|
|
|
1120 *tail = Fcons (build_string (fn), *tail);
|
|
|
1121 return 0;
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 /* Construct a list of all files to search for.
|
|
|
1125 It makes sense to have this despite locate_file_map_suffixes()
|
|
|
1126 because we need Lisp strings to access the hash-table, and it would
|
|
|
1127 be inefficient to create them on the fly, again and again for each
|
|
|
1128 path component. See locate_file(). */
|
|
|
1129
|
|
|
1130 static Lisp_Object
|
|
|
1131 locate_file_construct_suffixed_files (Lisp_Object filename,
|
|
|
1132 Lisp_Object suffixes)
|
|
|
1133 {
|
|
|
1134 Lisp_Object tail = Qnil;
|
|
|
1135 struct gcpro gcpro1;
|
|
|
1136 GCPRO1 (tail);
|
|
|
1137
|
|
|
1138 locate_file_map_suffixes (filename, suffixes,
|
|
|
1139 locate_file_construct_suffixed_files_mapper,
|
|
|
1140 &tail);
|
|
|
1141
|
|
|
1142 UNGCPRO;
|
|
|
1143 return Fnreverse (tail);
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 DEFUN ("locate-file-clear-hashing", Flocate_file_clear_hashing, 1, 1, 0, /*
|
|
|
1147 Clear the hash records for the specified list of directories.
|
|
|
1148 `locate-file' uses a hashing scheme to speed lookup, and will correctly
|
|
|
1149 track the following environmental changes:
|
|
|
1150
|
|
|
1151 -- changes of any sort to the list of directories to be searched.
|
|
|
1152 -- addition and deletion of non-shadowing files (see below) from the
|
|
|
1153 directories in the list.
|
|
|
1154 -- byte-compilation of a .el file into a .elc file.
|
|
|
1155
|
|
|
1156 `locate-file' will primarily get confused if you add a file that shadows
|
|
|
1157 \(i.e. has the same name as) another file further down in the directory list.
|
|
|
1158 In this case, you must call `locate-file-clear-hashing'.
|
|
|
1159
|
|
|
1160 If PATH is t, it means to fully clear all the accumulated hashes. This
|
|
|
1161 can be used if the internal tables grow too large, or when dumping.
|
|
|
1162 */
|
|
|
1163 (path))
|
|
|
1164 {
|
|
|
1165 if (EQ (path, Qt))
|
|
|
1166 Fclrhash (Vlocate_file_hash_table);
|
|
|
1167 else
|
|
|
1168 {
|
|
|
1169 Lisp_Object pathtail;
|
|
|
1170 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1171 {
|
|
|
1172 Lisp_Object pathel = Fexpand_file_name (XCAR (pathtail), Qnil);
|
|
|
1173 Fremhash (pathel, Vlocate_file_hash_table);
|
|
|
1174 }
|
|
|
1175 }
|
|
|
1176 return Qnil;
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 /* Search for a file whose name is STR, looking in directories
|
|
|
1180 in the Lisp list PATH, and trying suffixes from SUFFIXES.
|
|
|
1181 SUFFIXES is a list of possible suffixes, or (for backward
|
|
|
1182 compatibility) a string containing possible suffixes separated by
|
|
|
1183 colons.
|
|
|
1184 On success, returns a file descriptor. On failure, returns -1.
|
|
|
1185
|
|
|
1186 MODE nonnegative means don't open the files,
|
|
|
1187 just look for one for which access(file,MODE) succeeds. In this case,
|
|
|
1188 returns 1 on success.
|
|
|
1189
|
|
|
1190 If STOREPTR is nonzero, it points to a slot where the name of
|
|
|
1191 the file actually found should be stored as a Lisp string.
|
|
|
1192 Nil is stored there on failure.
|
|
|
1193
|
|
|
1194 Called openp() in FSFmacs. */
|
|
|
1195
|
|
|
1196 int
|
|
|
1197 locate_file (Lisp_Object path, Lisp_Object str, Lisp_Object suffixes,
|
|
|
1198 Lisp_Object *storeptr, int mode)
|
|
|
1199 {
|
|
|
1200 /* This function can GC */
|
|
|
1201 Lisp_Object suffixtab = Qnil;
|
|
|
1202 Lisp_Object pathtail, pathel_expanded;
|
|
|
1203 int val;
|
|
|
1204 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
|
1205
|
|
|
1206 if (storeptr)
|
|
|
1207 *storeptr = Qnil;
|
|
|
1208
|
|
|
1209 /* Is it really necessary to gcpro path and str? It shouldn't be
|
|
|
1210 unless some caller has fucked up. There are known instances that
|
|
|
1211 call us with build_string("foo:bar") as SUFFIXES, though. */
|
|
|
1212 GCPRO4 (path, str, suffixes, suffixtab);
|
|
|
1213
|
|
|
1214 /* if this filename has directory components, it's too complicated
|
|
|
1215 to try and use the hash tables. */
|
|
|
1216 if (!NILP (Ffile_name_directory (str)))
|
|
|
1217 {
|
|
|
1218 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1219 UNGCPRO;
|
|
|
1220 return val;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 suffixtab = locate_file_construct_suffixed_files (str, suffixes);
|
|
|
1224
|
|
|
1225 EXTERNAL_LIST_LOOP (pathtail, path)
|
|
|
1226 {
|
|
|
1227 Lisp_Object pathel = XCAR (pathtail);
|
|
|
1228 Lisp_Object hash_table;
|
|
|
1229 Lisp_Object tail;
|
|
|
1230 int found = 0;
|
|
|
1231
|
|
|
1232 /* If this path element is relative, we have to look by hand. */
|
|
|
1233 if (NILP (Ffile_name_absolute_p (pathel)))
|
|
|
1234 {
|
|
|
1235 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1236 mode);
|
|
|
1237 if (val >= 0)
|
|
|
1238 {
|
|
|
1239 UNGCPRO;
|
|
|
1240 return val;
|
|
|
1241 }
|
|
|
1242 continue;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 pathel_expanded = Fexpand_file_name (pathel, Qnil);
|
|
|
1246 hash_table = locate_file_find_directory_hash_table (pathel_expanded);
|
|
|
1247
|
|
|
1248 if (!NILP (hash_table))
|
|
|
1249 {
|
|
|
1250 /* Loop over suffixes. */
|
|
|
1251 LIST_LOOP (tail, suffixtab)
|
|
|
1252 if (!NILP (Fgethash (XCAR (tail), hash_table, Qnil)))
|
|
|
1253 {
|
|
|
1254 found = 1;
|
|
|
1255 break;
|
|
|
1256 }
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 if (found)
|
|
|
1260 {
|
|
|
1261 /* This is a likely candidate. Look by hand in this directory
|
|
|
1262 so we don't get thrown off if someone byte-compiles a file. */
|
|
|
1263 val = locate_file_in_directory (pathel, str, suffixes, storeptr,
|
|
|
1264 mode);
|
|
|
1265 if (val >= 0)
|
|
|
1266 {
|
|
|
1267 UNGCPRO;
|
|
|
1268 return val;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 /* Hmm ... the file isn't actually there. (Or possibly it's
|
|
|
1272 a directory ...) So refresh our hashing. */
|
|
|
1273 locate_file_refresh_hashing (pathel_expanded);
|
|
|
1274 }
|
|
|
1275 }
|
|
|
1276
|
|
|
1277 /* File is probably not there, but check the hard way just in case. */
|
|
|
1278 val = locate_file_without_hash (path, str, suffixes, storeptr, mode);
|
|
|
1279 if (val >= 0)
|
|
|
1280 {
|
|
|
1281 /* Sneaky user added a file without telling us. */
|
|
|
1282 Flocate_file_clear_hashing (path);
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 UNGCPRO;
|
|
|
1286 return val;
|
|
|
1287 }
|
|
|
1288
|
|
|
1289
|
|
|
1290 #ifdef LOADHIST
|
|
|
1291
|
|
|
1292 /* Merge the list we've accumulated of globals from the current input source
|
|
|
1293 into the load_history variable. The details depend on whether
|
|
|
1294 the source has an associated file name or not. */
|
|
|
1295
|
|
|
1296 static void
|
|
|
1297 build_load_history (int loading, Lisp_Object source)
|
|
|
1298 {
|
|
|
1299 REGISTER Lisp_Object tail, prev, newelt;
|
|
|
1300 REGISTER Lisp_Object tem, tem2;
|
|
|
1301 int foundit;
|
|
|
1302
|
|
|
1303 #if !defined(LOADHIST_DUMPED)
|
|
|
1304 /* Don't bother recording anything for preloaded files. */
|
|
|
1305 if (purify_flag)
|
|
|
1306 return;
|
|
|
1307 #endif
|
|
|
1308
|
|
|
1309 tail = Vload_history;
|
|
|
1310 prev = Qnil;
|
|
|
1311 foundit = 0;
|
|
|
1312 while (!NILP (tail))
|
|
|
1313 {
|
|
|
1314 tem = Fcar (tail);
|
|
|
1315
|
|
|
1316 /* Find the feature's previous assoc list... */
|
|
|
1317 if (internal_equal (source, Fcar (tem), 0))
|
|
|
1318 {
|
|
|
1319 foundit = 1;
|
|
|
1320
|
|
|
1321 /* If we're loading, remove it. */
|
|
|
1322 if (loading)
|
|
|
1323 {
|
|
|
1324 if (NILP (prev))
|
|
|
1325 Vload_history = Fcdr (tail);
|
|
|
1326 else
|
|
|
1327 Fsetcdr (prev, Fcdr (tail));
|
|
|
1328 }
|
|
|
1329
|
|
|
1330 /* Otherwise, cons on new symbols that are not already members. */
|
|
|
1331 else
|
|
|
1332 {
|
|
|
1333 tem2 = Vcurrent_load_list;
|
|
|
1334
|
|
|
1335 while (CONSP (tem2))
|
|
|
1336 {
|
|
|
1337 newelt = XCAR (tem2);
|
|
|
1338
|
|
|
1339 if (NILP (Fmemq (newelt, tem)))
|
|
|
1340 Fsetcar (tail, Fcons (Fcar (tem),
|
|
|
1341 Fcons (newelt, Fcdr (tem))));
|
|
|
1342
|
|
|
1343 tem2 = XCDR (tem2);
|
|
|
1344 QUIT;
|
|
|
1345 }
|
|
|
1346 }
|
|
|
1347 }
|
|
|
1348 else
|
|
|
1349 prev = tail;
|
|
|
1350 tail = Fcdr (tail);
|
|
|
1351 QUIT;
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 /* If we're loading, cons the new assoc onto the front of load-history,
|
|
|
1355 the most-recently-loaded position. Also do this if we didn't find
|
|
|
1356 an existing member for the current source. */
|
|
|
1357 if (loading || !foundit)
|
|
|
1358 Vload_history = Fcons (Fnreverse (Vcurrent_load_list),
|
|
|
1359 Vload_history);
|
|
|
1360 }
|
|
|
1361
|
|
|
1362 #else /* !LOADHIST */
|
|
|
1363 #define build_load_history(x,y)
|
|
|
1364 #endif /* !LOADHIST */
|
|
|
1365
|
|
|
1366
|
|
|
1367 #if 0 /* FSFmacs defun hack */
|
|
|
1368 Lisp_Object
|
|
|
1369 unreadpure (void) /* Used as unwind-protect function in readevalloop */
|
|
|
1370 {
|
|
|
1371 read_pure = 0;
|
|
|
1372 return Qnil;
|
|
|
1373 }
|
|
|
1374 #endif /* 0 */
|
|
|
1375
|
|
|
1376 static void
|
|
|
1377 readevalloop (Lisp_Object readcharfun,
|
|
|
1378 Lisp_Object sourcename,
|
|
|
1379 Lisp_Object (*evalfun) (Lisp_Object),
|
|
|
1380 int printflag)
|
|
|
1381 {
|
|
|
1382 /* This function can GC */
|
|
|
1383 REGISTER Emchar c;
|
|
|
1384 REGISTER Lisp_Object val = Qnil;
|
|
|
1385 int speccount = specpdl_depth ();
|
|
|
1386 struct gcpro gcpro1, gcpro2;
|
|
|
1387 struct buffer *b = 0;
|
|
|
1388
|
|
|
1389 if (BUFFERP (readcharfun))
|
|
|
1390 b = XBUFFER (readcharfun);
|
|
|
1391 else if (MARKERP (readcharfun))
|
|
|
1392 b = XMARKER (readcharfun)->buffer;
|
|
|
1393
|
|
|
1394 /* Don't do this. It is not necessary, and it needlessly exposes
|
|
|
1395 READCHARFUN (which can be a stream) to Lisp. --hniksic */
|
|
|
1396 /*specbind (Qstandard_input, readcharfun);*/
|
|
|
1397
|
|
|
1398 specbind (Qcurrent_load_list, Qnil);
|
|
|
1399
|
|
|
1400 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1401 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1402 #endif
|
|
|
1403 GCPRO2 (val, sourcename);
|
|
|
1404
|
|
|
1405 LOADHIST_ATTACH (sourcename);
|
|
|
1406
|
|
|
1407 while (1)
|
|
|
1408 {
|
|
|
1409 QUIT;
|
|
|
1410
|
|
|
1411 if (b != 0 && !BUFFER_LIVE_P (b))
|
|
|
1412 error ("Reading from killed buffer");
|
|
|
1413
|
|
|
1414 c = readchar (readcharfun);
|
|
|
1415 if (c == ';')
|
|
|
1416 {
|
|
|
1417 /* Skip comment */
|
|
|
1418 while ((c = readchar (readcharfun)) != '\n' && c != -1)
|
|
|
1419 QUIT;
|
|
|
1420 continue;
|
|
|
1421 }
|
|
|
1422 if (c < 0)
|
|
|
1423 break;
|
|
|
1424
|
|
|
1425 /* Ignore whitespace here, so we can detect eof. */
|
|
|
1426 if (c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r')
|
|
|
1427 continue;
|
|
|
1428
|
|
|
1429 #if 0 /* FSFmacs defun hack */
|
|
|
1430 if (purify_flag && c == '(')
|
|
|
1431 {
|
|
|
1432 int count1 = specpdl_depth ();
|
|
|
1433 record_unwind_protect (unreadpure, Qnil);
|
|
|
1434 val = read_list (readcharfun, ')', -1, 1);
|
|
|
1435 unbind_to (count1, Qnil);
|
|
|
1436 }
|
|
|
1437 else
|
|
|
1438 #else /* No "defun hack" -- Emacs 19 uses read-time syntax for bytecodes */
|
|
|
1439 {
|
|
|
1440 unreadchar (readcharfun, c);
|
|
|
1441 Vread_objects = Qnil;
|
|
|
1442 if (NILP (Vload_read_function))
|
|
|
1443 val = read0 (readcharfun);
|
|
|
1444 else
|
|
|
1445 val = call1 (Vload_read_function, readcharfun);
|
|
|
1446 }
|
|
|
1447 #endif
|
|
|
1448 val = (*evalfun) (val);
|
|
|
1449 if (printflag)
|
|
|
1450 {
|
|
|
1451 Vvalues = Fcons (val, Vvalues);
|
|
|
1452 if (EQ (Vstandard_output, Qt))
|
|
|
1453 Fprin1 (val, Qnil);
|
|
|
1454 else
|
|
|
1455 Fprint (val, Qnil);
|
|
|
1456 }
|
|
|
1457 }
|
|
|
1458
|
|
|
1459 build_load_history (LSTREAMP (readcharfun) ||
|
|
|
1460 /* This looks weird, but it's what's in FSFmacs */
|
|
|
1461 (b ? BUF_NARROWED (b) : BUF_NARROWED (current_buffer)),
|
|
|
1462 sourcename);
|
|
|
1463 UNGCPRO;
|
|
|
1464
|
|
|
1465 unbind_to (speccount, Qnil);
|
|
|
1466 }
|
|
|
1467
|
|
|
1468 DEFUN ("eval-buffer", Feval_buffer, 0, 2, "bBuffer: ", /*
|
|
|
1469 Execute BUFFER as Lisp code.
|
|
|
1470 Programs can pass two arguments, BUFFER and PRINTFLAG.
|
|
|
1471 BUFFER is the buffer to evaluate (nil means use current buffer).
|
|
|
1472 PRINTFLAG controls printing of output:
|
|
|
1473 nil means discard it; anything else is stream for print.
|
|
|
1474
|
|
|
1475 If there is no error, point does not move. If there is an error,
|
|
|
1476 point remains at the end of the last character read from the buffer.
|
|
|
1477 Execute BUFFER as Lisp code.
|
|
|
1478 */
|
|
|
1479 (bufname, printflag))
|
|
|
1480 {
|
|
|
1481 /* This function can GC */
|
|
|
1482 int speccount = specpdl_depth ();
|
|
|
1483 Lisp_Object tem, buf;
|
|
|
1484
|
|
|
1485 if (NILP (bufname))
|
|
|
1486 buf = Fcurrent_buffer ();
|
|
|
1487 else
|
|
|
1488 buf = Fget_buffer (bufname);
|
|
|
1489 if (NILP (buf))
|
|
|
1490 error ("No such buffer.");
|
|
|
1491
|
|
|
1492 if (NILP (printflag))
|
|
|
1493 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1494 else
|
|
|
1495 tem = printflag;
|
|
|
1496 specbind (Qstandard_output, tem);
|
|
|
1497 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1498 BUF_SET_PT (XBUFFER (buf), BUF_BEGV (XBUFFER (buf)));
|
|
|
1499 readevalloop (buf, XBUFFER (buf)->filename, Feval,
|
|
|
1500 !NILP (printflag));
|
|
|
1501
|
|
|
1502 return unbind_to (speccount, Qnil);
|
|
|
1503 }
|
|
|
1504
|
|
|
1505 #if 0
|
|
|
1506 xxDEFUN ("eval-current-buffer", Feval_current_buffer, 0, 1, "", /*
|
|
|
1507 Execute the current buffer as Lisp code.
|
|
|
1508 Programs can pass argument PRINTFLAG which controls printing of output:
|
|
|
1509 nil means discard it; anything else is stream for print.
|
|
|
1510
|
|
|
1511 If there is no error, point does not move. If there is an error,
|
|
|
1512 point remains at the end of the last character read from the buffer.
|
|
|
1513 */
|
|
|
1514 (printflag))
|
|
|
1515 {
|
|
|
1516 code omitted;
|
|
|
1517 }
|
|
|
1518 #endif /* 0 */
|
|
|
1519
|
|
|
1520 DEFUN ("eval-region", Feval_region, 2, 3, "r", /*
|
|
|
1521 Execute the region as Lisp code.
|
|
|
1522 When called from programs, expects two arguments,
|
|
|
1523 giving starting and ending indices in the current buffer
|
|
|
1524 of the text to be executed.
|
|
|
1525 Programs can pass third argument PRINTFLAG which controls output:
|
|
|
1526 nil means discard it; anything else is stream for printing it.
|
|
|
1527
|
|
|
1528 If there is no error, point does not move. If there is an error,
|
|
|
1529 point remains at the end of the last character read from the buffer.
|
|
|
1530
|
|
|
1531 Note: Before evaling the region, this function narrows the buffer to it.
|
|
|
1532 If the code being eval'd should happen to trigger a redisplay you may
|
|
|
1533 see some text temporarily disappear because of this.
|
|
|
1534 */
|
|
|
1535 (b, e, printflag))
|
|
|
1536 {
|
|
|
1537 /* This function can GC */
|
|
|
1538 int speccount = specpdl_depth ();
|
|
|
1539 Lisp_Object tem;
|
|
|
1540 Lisp_Object cbuf = Fcurrent_buffer ();
|
|
|
1541
|
|
|
1542 if (NILP (printflag))
|
|
|
1543 tem = Qsymbolp; /* #### #@[]*&$#*[& SI:NULL-STREAM */
|
|
|
1544 else
|
|
|
1545 tem = printflag;
|
|
|
1546 specbind (Qstandard_output, tem);
|
|
|
1547
|
|
|
1548 if (NILP (printflag))
|
|
|
1549 record_unwind_protect (save_excursion_restore, save_excursion_save ());
|
|
|
1550 record_unwind_protect (save_restriction_restore, save_restriction_save ());
|
|
|
1551
|
|
|
1552 /* This both uses b and checks its type. */
|
|
|
1553 Fgoto_char (b, cbuf);
|
|
|
1554 Fnarrow_to_region (make_int (BUF_BEGV (current_buffer)), e, cbuf);
|
|
|
1555 readevalloop (cbuf, XBUFFER (cbuf)->filename, Feval,
|
|
|
1556 !NILP (printflag));
|
|
|
1557
|
|
|
1558 return unbind_to (speccount, Qnil);
|
|
|
1559 }
|
|
|
1560
|
|
|
1561 DEFUN ("read", Fread, 0, 1, 0, /*
|
|
|
1562 Read one Lisp expression as text from STREAM, return as Lisp object.
|
|
|
1563 If STREAM is nil, use the value of `standard-input' (which see).
|
|
|
1564 STREAM or the value of `standard-input' may be:
|
|
|
1565 a buffer (read from point and advance it)
|
|
|
1566 a marker (read from where it points and advance it)
|
|
|
1567 a function (call it with no arguments for each character,
|
|
|
1568 call it with a char as argument to push a char back)
|
|
|
1569 a string (takes text from string, starting at the beginning)
|
|
|
1570 t (read text line using minibuffer and use it).
|
|
|
1571 */
|
|
|
1572 (stream))
|
|
|
1573 {
|
|
|
1574 if (NILP (stream))
|
|
|
1575 stream = Vstandard_input;
|
|
|
1576 if (EQ (stream, Qt))
|
|
|
1577 stream = Qread_char;
|
|
|
1578
|
|
|
1579 Vread_objects = Qnil;
|
|
|
1580
|
|
|
1581 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1582 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1583 #endif
|
|
|
1584 if (EQ (stream, Qread_char))
|
|
|
1585 {
|
|
|
1586 Lisp_Object val = call1 (Qread_from_minibuffer,
|
|
|
1587 build_translated_string ("Lisp expression: "));
|
|
|
1588 return Fcar (Fread_from_string (val, Qnil, Qnil));
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 if (STRINGP (stream))
|
|
|
1592 return Fcar (Fread_from_string (stream, Qnil, Qnil));
|
|
|
1593
|
|
|
1594 return read0 (stream);
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 DEFUN ("read-from-string", Fread_from_string, 1, 3, 0, /*
|
|
|
1598 Read one Lisp expression which is represented as text by STRING.
|
|
|
1599 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
|
|
|
1600 START and END optionally delimit a substring of STRING from which to read;
|
|
|
1601 they default to 0 and (length STRING) respectively.
|
|
|
1602 */
|
|
|
1603 (string, start, end))
|
|
|
1604 {
|
|
|
1605 Bytecount startval, endval;
|
|
|
1606 Lisp_Object tem;
|
|
|
1607 Lisp_Object lispstream = Qnil;
|
|
|
1608 struct gcpro gcpro1;
|
|
|
1609
|
|
|
1610 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
1611 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
1612 #endif
|
|
|
1613 GCPRO1 (lispstream);
|
|
|
1614 CHECK_STRING (string);
|
|
|
1615 get_string_range_byte (string, start, end, &startval, &endval,
|
|
|
1616 GB_HISTORICAL_STRING_BEHAVIOR);
|
|
|
1617 lispstream = make_lisp_string_input_stream (string, startval,
|
|
|
1618 endval - startval);
|
|
|
1619
|
|
|
1620 Vread_objects = Qnil;
|
|
|
1621
|
|
|
1622 tem = read0 (lispstream);
|
|
|
1623 /* Yeah, it's ugly. Gonna make something of it?
|
|
|
1624 At least our reader is reentrant ... */
|
|
|
1625 tem =
|
|
|
1626 (Fcons (tem, make_int
|
|
|
1627 (bytecount_to_charcount
|
|
|
1628 (XSTRING_DATA (string),
|
|
|
1629 startval + Lstream_byte_count (XLSTREAM (lispstream))))));
|
|
|
1630 Lstream_delete (XLSTREAM (lispstream));
|
|
|
1631 UNGCPRO;
|
|
|
1632 return tem;
|
|
|
1633 }
|
|
|
1634
|
|
|
1635
|
|
|
1636 #ifdef LISP_BACKQUOTES
|
|
|
1637
|
|
|
1638 static Lisp_Object
|
|
|
1639 backquote_unwind (Lisp_Object ptr)
|
|
|
1640 { /* used as unwind-protect function in read0() */
|
|
|
1641 int *counter = (int *) get_opaque_ptr (ptr);
|
|
|
1642 if (--*counter < 0)
|
|
|
1643 *counter = 0;
|
|
|
1644 free_opaque_ptr (ptr);
|
|
|
1645 return Qnil;
|
|
|
1646 }
|
|
|
1647
|
|
|
1648 #endif
|
|
|
1649
|
|
|
1650 /* Use this for recursive reads, in contexts where internal tokens
|
|
|
1651 are not allowed. See also read1(). */
|
|
|
1652 static Lisp_Object
|
|
|
1653 read0 (Lisp_Object readcharfun)
|
|
|
1654 {
|
|
|
1655 Lisp_Object val = read1 (readcharfun);
|
|
|
1656
|
|
|
1657 if (CONSP (val) && UNBOUNDP (XCAR (val)))
|
|
|
1658 {
|
|
|
1659 Emchar c = XCHAR (XCDR (val));
|
|
|
1660 free_cons (XCONS (val));
|
|
|
1661 return Fsignal (Qinvalid_read_syntax,
|
|
|
1662 list1 (Fchar_to_string (make_char (c))));
|
|
|
1663 }
|
|
|
1664
|
|
|
1665 return val;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 static Emchar
|
|
|
1669 read_escape (Lisp_Object readcharfun)
|
|
|
1670 {
|
|
|
1671 /* This function can GC */
|
|
|
1672 Emchar c = readchar (readcharfun);
|
|
|
1673
|
|
|
1674 if (c < 0)
|
|
|
1675 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1676
|
|
|
1677 switch (c)
|
|
|
1678 {
|
|
|
1679 case 'a': return '\007';
|
|
|
1680 case 'b': return '\b';
|
|
|
1681 case 'd': return 0177;
|
|
|
1682 case 'e': return 033;
|
|
|
1683 case 'f': return '\f';
|
|
|
1684 case 'n': return '\n';
|
|
|
1685 case 'r': return '\r';
|
|
|
1686 case 't': return '\t';
|
|
|
1687 case 'v': return '\v';
|
|
|
1688 case '\n': return -1;
|
|
|
1689
|
|
|
1690 case 'M':
|
|
|
1691 c = readchar (readcharfun);
|
|
|
1692 if (c < 0)
|
|
|
1693 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1694 if (c != '-')
|
|
|
1695 error ("Invalid escape character syntax");
|
|
|
1696 c = readchar (readcharfun);
|
|
|
1697 if (c < 0)
|
|
|
1698 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1699 if (c == '\\')
|
|
|
1700 c = read_escape (readcharfun);
|
|
|
1701 return c | 0200;
|
|
|
1702
|
|
|
1703 /* Originally, FSF_KEYS provided a degree of FSF Emacs
|
|
|
1704 compatibility by defining character "modifiers" alt, super,
|
|
|
1705 hyper and shift to infest the characters (i.e. integers).
|
|
|
1706
|
|
|
1707 However, this doesn't cut it for XEmacs 20, which
|
|
|
1708 distinguishes characters from integers. Without Mule, ?\H-a
|
|
|
1709 simply returns ?a because every character is clipped into
|
|
|
1710 0-255. Under Mule it is much worse -- ?\H-a with FSF_KEYS
|
|
|
1711 produces an illegal character, and moves us to crash-land.
|
|
|
1712
|
|
|
1713 For these reasons, FSF_KEYS hack is useless and without hope
|
|
|
1714 of ever working under XEmacs 20. */
|
|
|
1715 #undef FSF_KEYS
|
|
|
1716
|
|
|
1717 #ifdef FSF_KEYS
|
|
|
1718 #define alt_modifier (0x040000)
|
|
|
1719 #define super_modifier (0x080000)
|
|
|
1720 #define hyper_modifier (0x100000)
|
|
|
1721 #define shift_modifier (0x200000)
|
|
|
1722 /* fsf uses a different modifiers for meta and control. Possibly
|
|
|
1723 byte_compiled code will still work fsfmacs, though... --Stig
|
|
|
1724
|
|
|
1725 #define ctl_modifier (0x400000)
|
|
|
1726 #define meta_modifier (0x800000)
|
|
|
1727 */
|
|
|
1728 #define FSF_LOSSAGE(mask) \
|
|
|
1729 if (fail_on_bucky_bit_character_escapes || \
|
|
|
1730 ((c = readchar (readcharfun)) != '-')) \
|
|
|
1731 error ("Invalid escape character syntax"); \
|
|
|
1732 c = readchar (readcharfun); \
|
|
|
1733 if (c < 0) \
|
|
|
1734 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun))); \
|
|
|
1735 if (c == '\\') \
|
|
|
1736 c = read_escape (readcharfun); \
|
|
|
1737 return c | mask
|
|
|
1738
|
|
|
1739 case 'S': FSF_LOSSAGE (shift_modifier);
|
|
|
1740 case 'H': FSF_LOSSAGE (hyper_modifier);
|
|
|
1741 case 'A': FSF_LOSSAGE (alt_modifier);
|
|
|
1742 case 's': FSF_LOSSAGE (super_modifier);
|
|
|
1743 #undef alt_modifier
|
|
|
1744 #undef super_modifier
|
|
|
1745 #undef hyper_modifier
|
|
|
1746 #undef shift_modifier
|
|
|
1747 #undef FSF_LOSSAGE
|
|
|
1748
|
|
|
1749 #endif /* FSF_KEYS */
|
|
|
1750
|
|
|
1751 case 'C':
|
|
|
1752 c = readchar (readcharfun);
|
|
|
1753 if (c < 0)
|
|
|
1754 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1755 if (c != '-')
|
|
|
1756 error ("Invalid escape character syntax");
|
|
|
1757 case '^':
|
|
|
1758 c = readchar (readcharfun);
|
|
|
1759 if (c < 0)
|
|
|
1760 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1761 if (c == '\\')
|
|
|
1762 c = read_escape (readcharfun);
|
|
|
1763 /* FSFmacs junk for non-ASCII controls.
|
|
|
1764 Not used here. */
|
|
|
1765 if (c == '?')
|
|
|
1766 return 0177;
|
|
|
1767 else
|
|
|
1768 return c & (0200 | 037);
|
|
|
1769
|
|
|
1770 case '0':
|
|
|
1771 case '1':
|
|
|
1772 case '2':
|
|
|
1773 case '3':
|
|
|
1774 case '4':
|
|
|
1775 case '5':
|
|
|
1776 case '6':
|
|
|
1777 case '7':
|
|
|
1778 /* An octal escape, as in ANSI C. */
|
|
|
1779 {
|
|
|
1780 REGISTER Emchar i = c - '0';
|
|
|
1781 REGISTER int count = 0;
|
|
|
1782 while (++count < 3)
|
|
|
1783 {
|
|
|
1784 if ((c = readchar (readcharfun)) >= '0' && c <= '7')
|
|
|
1785 i = (i << 3) + (c - '0');
|
|
|
1786 else
|
|
|
1787 {
|
|
|
1788 unreadchar (readcharfun, c);
|
|
|
1789 break;
|
|
|
1790 }
|
|
|
1791 }
|
|
|
1792 return i;
|
|
|
1793 }
|
|
|
1794
|
|
|
1795 case 'x':
|
|
|
1796 /* A hex escape, as in ANSI C, except that we only allow latin-1
|
|
|
1797 characters to be read this way. What is "\x4e03" supposed to
|
|
|
1798 mean, anyways, if the internal representation is hidden?
|
|
|
1799 This is also consistent with the treatment of octal escapes. */
|
|
|
1800 {
|
|
|
1801 REGISTER Emchar i = 0;
|
|
|
1802 REGISTER int count = 0;
|
|
|
1803 while (++count <= 2)
|
|
|
1804 {
|
|
|
1805 c = readchar (readcharfun);
|
|
|
1806 /* Remember, can't use isdigit(), isalpha() etc. on Emchars */
|
|
|
1807 if (c >= '0' && c <= '9') i = (i << 4) + (c - '0');
|
|
|
1808 else if (c >= 'a' && c <= 'f') i = (i << 4) + (c - 'a') + 10;
|
|
|
1809 else if (c >= 'A' && c <= 'F') i = (i << 4) + (c - 'A') + 10;
|
|
|
1810 else
|
|
|
1811 {
|
|
|
1812 unreadchar (readcharfun, c);
|
|
|
1813 break;
|
|
|
1814 }
|
|
|
1815 }
|
|
|
1816 return i;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 #ifdef MULE
|
|
|
1820 /* #### need some way of reading an extended character with
|
|
|
1821 an escape sequence. */
|
|
|
1822 #endif
|
|
|
1823
|
|
|
1824 default:
|
|
|
1825 return c;
|
|
|
1826 }
|
|
|
1827 }
|
|
|
1828
|
|
|
1829
|
|
|
1830
|
|
|
1831 /* read symbol-constituent stuff into `Vread_buffer_stream'. */
|
|
|
1832 static Bytecount
|
|
|
1833 read_atom_0 (Lisp_Object readcharfun, Emchar firstchar, int *saw_a_backslash)
|
|
|
1834 {
|
|
|
1835 /* This function can GC */
|
|
|
1836 Emchar c = ((firstchar) >= 0 ? firstchar : readchar (readcharfun));
|
|
|
1837 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
1838
|
|
|
1839 *saw_a_backslash = 0;
|
|
|
1840
|
|
|
1841 while (c > 040 /* #### - comma should be here as should backquote */
|
|
|
1842 && !(c == '\"' || c == '\'' || c == ';'
|
|
|
1843 || c == '(' || c == ')'
|
|
|
1844 #ifndef LISP_FLOAT_TYPE
|
|
|
1845 /* If we have floating-point support, then we need
|
|
|
1846 to allow <digits><dot><digits>. */
|
|
|
1847 || c =='.'
|
|
|
1848 #endif /* not LISP_FLOAT_TYPE */
|
|
|
1849 || c == '[' || c == ']' || c == '#'
|
|
|
1850 ))
|
|
|
1851 {
|
|
|
1852 if (c == '\\')
|
|
|
1853 {
|
|
|
1854 c = readchar (readcharfun);
|
|
|
1855 if (c < 0)
|
|
|
1856 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
1857 *saw_a_backslash = 1;
|
|
|
1858 }
|
|
|
1859 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
1860 QUIT;
|
|
|
1861 c = readchar (readcharfun);
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 if (c >= 0)
|
|
|
1865 unreadchar (readcharfun, c);
|
|
|
1866 /* blasted terminating 0 */
|
|
|
1867 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), 0);
|
|
|
1868 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
1869
|
|
|
1870 return Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) - 1;
|
|
|
1871 }
|
|
|
1872
|
|
|
1873 static Lisp_Object parse_integer (CONST Bufbyte *buf, Bytecount len, int base);
|
|
|
1874
|
|
|
1875 static Lisp_Object
|
|
|
1876 read_atom (Lisp_Object readcharfun,
|
|
|
1877 Emchar firstchar,
|
|
|
1878 int uninterned_symbol)
|
|
|
1879 {
|
|
|
1880 /* This function can GC */
|
|
|
1881 int saw_a_backslash;
|
|
|
1882 Bytecount len = read_atom_0 (readcharfun, firstchar, &saw_a_backslash);
|
|
|
1883 char *read_ptr = (char *)
|
|
|
1884 resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream));
|
|
|
1885
|
|
|
1886 /* Is it an integer? */
|
|
|
1887 if (! (saw_a_backslash || uninterned_symbol))
|
|
|
1888 {
|
|
|
1889 /* If a token had any backslashes in it, it is disqualified from
|
|
|
1890 being an integer or a float. This means that 123\456 is a
|
|
|
1891 symbol, as is \123 (which is the way (intern "123") prints).
|
|
|
1892 Also, if token was preceded by #:, it's always a symbol.
|
|
|
1893 */
|
|
|
1894 char *p = read_ptr + len;
|
|
|
1895 char *p1 = read_ptr;
|
|
|
1896
|
|
|
1897 if (*p1 == '+' || *p1 == '-') p1++;
|
|
|
1898 if (p1 != p)
|
|
|
1899 {
|
|
|
1900 int c;
|
|
|
1901
|
|
|
1902 while (p1 != p && (c = *p1) >= '0' && c <= '9')
|
|
|
1903 p1++;
|
|
|
1904 #ifdef LISP_FLOAT_TYPE
|
|
|
1905 /* Integers can have trailing decimal points. */
|
|
|
1906 if (p1 > read_ptr && p1 < p && *p1 == '.')
|
|
|
1907 p1++;
|
|
|
1908 #endif
|
|
|
1909 if (p1 == p)
|
|
|
1910 {
|
|
|
1911 /* It is an integer. */
|
|
|
1912 #ifdef LISP_FLOAT_TYPE
|
|
|
1913 if (p1[-1] == '.')
|
|
|
1914 p1[-1] = '\0';
|
|
|
1915 #endif
|
|
|
1916 #if 0
|
|
|
1917 {
|
|
|
1918 int number = 0;
|
|
|
1919 if (sizeof (int) == sizeof (EMACS_INT))
|
|
|
1920 number = atoi (read_buffer);
|
|
|
1921 else if (sizeof (long) == sizeof (EMACS_INT))
|
|
|
1922 number = atol (read_buffer);
|
|
|
1923 else
|
|
|
1924 abort ();
|
|
|
1925 return make_int (number);
|
|
|
1926 }
|
|
|
1927 #else
|
|
|
1928 return parse_integer ((Bufbyte *) read_ptr, len, 10);
|
|
|
1929 #endif
|
|
|
1930 }
|
|
|
1931 }
|
|
|
1932 #ifdef LISP_FLOAT_TYPE
|
|
|
1933 if (isfloat_string (read_ptr))
|
|
|
1934 return make_float (atof (read_ptr));
|
|
|
1935 #endif
|
|
|
1936 }
|
|
|
1937
|
|
|
1938 {
|
|
|
1939 Lisp_Object sym;
|
|
|
1940 if (uninterned_symbol)
|
|
|
1941 sym = Fmake_symbol ( make_string ((Bufbyte *) read_ptr, len));
|
|
|
1942 else
|
|
|
1943 {
|
|
|
1944 Lisp_Object name = make_string ((Bufbyte *) read_ptr, len);
|
|
|
1945 sym = Fintern (name, Qnil);
|
|
|
1946 }
|
|
|
1947 return sym;
|
|
|
1948 }
|
|
|
1949 }
|
|
|
1950
|
|
|
1951
|
|
|
1952 static Lisp_Object
|
|
|
1953 parse_integer (CONST Bufbyte *buf, Bytecount len, int base)
|
|
|
1954 {
|
|
|
1955 CONST Bufbyte *lim = buf + len;
|
|
|
1956 CONST Bufbyte *p = buf;
|
|
|
1957 EMACS_UINT num = 0;
|
|
|
1958 int negativland = 0;
|
|
|
1959
|
|
|
1960 if (*p == '-')
|
|
|
1961 {
|
|
|
1962 negativland = 1;
|
|
|
1963 p++;
|
|
|
1964 }
|
|
|
1965 else if (*p == '+')
|
|
|
1966 {
|
|
|
1967 p++;
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 if (p == lim)
|
|
|
1971 goto loser;
|
|
|
1972
|
|
|
1973 for (; (p < lim) && (*p != '\0'); p++)
|
|
|
1974 {
|
|
|
1975 int c = *p;
|
|
|
1976 EMACS_UINT onum;
|
|
|
1977
|
|
|
1978 if (isdigit (c))
|
|
|
1979 c = c - '0';
|
|
|
1980 else if (isupper (c))
|
|
|
1981 c = c - 'A' + 10;
|
|
|
1982 else if (islower (c))
|
|
|
1983 c = c - 'a' + 10;
|
|
|
1984 else
|
|
|
1985 goto loser;
|
|
|
1986
|
|
|
1987 if (c < 0 || c >= base)
|
|
|
1988 goto loser;
|
|
|
1989
|
|
|
1990 onum = num;
|
|
|
1991 num = num * base + c;
|
|
|
1992 if (num < onum)
|
|
|
1993 goto overflow;
|
|
|
1994 }
|
|
|
1995
|
|
|
1996 {
|
|
|
1997 EMACS_INT int_result = negativland ? - (EMACS_INT) num : (EMACS_INT) num;
|
|
|
1998 Lisp_Object result = make_int (int_result);
|
|
|
1999 if (num && ((XINT (result) < 0) != negativland))
|
|
|
2000 goto overflow;
|
|
|
2001 if (XINT (result) != int_result)
|
|
|
2002 goto overflow;
|
|
|
2003 return result;
|
|
|
2004 }
|
|
|
2005 overflow:
|
|
|
2006 return Fsignal (Qinvalid_read_syntax,
|
|
|
2007 list3 (build_translated_string
|
|
|
2008 ("Integer constant overflow in reader"),
|
|
|
2009 make_string (buf, len),
|
|
|
2010 make_int (base)));
|
|
|
2011 loser:
|
|
|
2012 return Fsignal (Qinvalid_read_syntax,
|
|
|
2013 list3 (build_translated_string
|
|
|
2014 ("Invalid integer constant in reader"),
|
|
|
2015 make_string (buf, len),
|
|
|
2016 make_int (base)));
|
|
|
2017 }
|
|
|
2018
|
|
|
2019
|
|
|
2020 static Lisp_Object
|
|
|
2021 read_integer (Lisp_Object readcharfun, int base)
|
|
|
2022 {
|
|
|
2023 /* This function can GC */
|
|
|
2024 int saw_a_backslash;
|
|
|
2025 Bytecount len = read_atom_0 (readcharfun, -1, &saw_a_backslash);
|
|
|
2026 return (parse_integer
|
|
|
2027 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2028 ((saw_a_backslash)
|
|
|
2029 ? 0 /* make parse_integer signal error */
|
|
|
2030 : len),
|
|
|
2031 base));
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 static Lisp_Object
|
|
|
2035 read_bit_vector (Lisp_Object readcharfun)
|
|
|
2036 {
|
|
|
2037 unsigned_char_dynarr *dyn = Dynarr_new (unsigned_char);
|
|
|
2038 Emchar c;
|
|
|
2039
|
|
|
2040 while (1)
|
|
|
2041 {
|
|
|
2042 c = readchar (readcharfun);
|
|
|
2043 if (c != '0' && c != '1')
|
|
|
2044 break;
|
|
|
2045 Dynarr_add (dyn, (unsigned char) (c - '0'));
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 if (c >= 0)
|
|
|
2049 unreadchar (readcharfun, c);
|
|
|
2050
|
|
|
2051 return make_bit_vector_from_byte_vector (Dynarr_atp (dyn, 0),
|
|
|
2052 Dynarr_length (dyn));
|
|
|
2053 }
|
|
|
2054
|
|
|
2055
|
|
|
2056
|
|
|
2057 /* structures */
|
|
|
2058
|
|
|
2059 struct structure_type *
|
|
|
2060 define_structure_type (Lisp_Object type,
|
|
|
2061 int (*validate) (Lisp_Object data,
|
|
|
2062 Error_behavior errb),
|
|
|
2063 Lisp_Object (*instantiate) (Lisp_Object data))
|
|
|
2064 {
|
|
|
2065 struct structure_type st;
|
|
|
2066
|
|
|
2067 st.type = type;
|
|
|
2068 st.keywords = Dynarr_new (structure_keyword_entry);
|
|
|
2069 st.validate = validate;
|
|
|
2070 st.instantiate = instantiate;
|
|
|
2071 Dynarr_add (the_structure_type_dynarr, st);
|
|
|
2072
|
|
|
2073 return Dynarr_atp (the_structure_type_dynarr,
|
|
|
2074 Dynarr_length (the_structure_type_dynarr) - 1);
|
|
|
2075 }
|
|
|
2076
|
|
|
2077 void
|
|
|
2078 define_structure_type_keyword (struct structure_type *st, Lisp_Object keyword,
|
|
|
2079 int (*validate) (Lisp_Object keyword,
|
|
|
2080 Lisp_Object value,
|
|
|
2081 Error_behavior errb))
|
|
|
2082 {
|
|
|
2083 struct structure_keyword_entry en;
|
|
|
2084
|
|
|
2085 en.keyword = keyword;
|
|
|
2086 en.validate = validate;
|
|
|
2087 Dynarr_add (st->keywords, en);
|
|
|
2088 }
|
|
|
2089
|
|
|
2090 static struct structure_type *
|
|
|
2091 recognized_structure_type (Lisp_Object type)
|
|
|
2092 {
|
|
|
2093 int i;
|
|
|
2094
|
|
|
2095 for (i = 0; i < Dynarr_length (the_structure_type_dynarr); i++)
|
|
|
2096 {
|
|
|
2097 struct structure_type *st = Dynarr_atp (the_structure_type_dynarr, i);
|
|
|
2098 if (EQ (st->type, type))
|
|
|
2099 return st;
|
|
|
2100 }
|
|
|
2101
|
|
|
2102 return 0;
|
|
|
2103 }
|
|
|
2104
|
|
|
2105 static Lisp_Object
|
|
|
2106 read_structure (Lisp_Object readcharfun)
|
|
|
2107 {
|
|
|
2108 Emchar c = readchar (readcharfun);
|
|
|
2109 Lisp_Object list = Qnil;
|
|
|
2110 Lisp_Object orig_list = Qnil;
|
|
|
2111 Lisp_Object already_seen = Qnil;
|
|
|
2112 int keyword_count;
|
|
|
2113 struct structure_type *st;
|
|
|
2114 struct gcpro gcpro1, gcpro2;
|
|
|
2115
|
|
|
2116 GCPRO2 (orig_list, already_seen);
|
|
|
2117 if (c != '(')
|
|
|
2118 RETURN_UNGCPRO (continuable_syntax_error ("#s not followed by paren"));
|
|
|
2119 list = read_list (readcharfun, ')', 0, 0);
|
|
|
2120 orig_list = list;
|
|
|
2121 {
|
|
|
2122 int len = XINT (Flength (list));
|
|
|
2123 if (len == 0)
|
|
|
2124 RETURN_UNGCPRO (continuable_syntax_error
|
|
|
2125 ("structure type not specified"));
|
|
|
2126 if (!(len & 1))
|
|
|
2127 RETURN_UNGCPRO
|
|
|
2128 (continuable_syntax_error
|
|
|
2129 ("structures must have alternating keyword/value pairs"));
|
|
|
2130 }
|
|
|
2131
|
|
|
2132 st = recognized_structure_type (XCAR (list));
|
|
|
2133 if (!st)
|
|
|
2134 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2135 list2 (build_translated_string
|
|
|
2136 ("unrecognized structure type"),
|
|
|
2137 XCAR (list))));
|
|
|
2138
|
|
|
2139 list = Fcdr (list);
|
|
|
2140 keyword_count = Dynarr_length (st->keywords);
|
|
|
2141 while (!NILP (list))
|
|
|
2142 {
|
|
|
2143 Lisp_Object keyword, value;
|
|
|
2144 int i;
|
|
|
2145 struct structure_keyword_entry *en = NULL;
|
|
|
2146
|
|
|
2147 keyword = Fcar (list);
|
|
|
2148 list = Fcdr (list);
|
|
|
2149 value = Fcar (list);
|
|
|
2150 list = Fcdr (list);
|
|
|
2151
|
|
|
2152 if (!NILP (memq_no_quit (keyword, already_seen)))
|
|
|
2153 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2154 list2 (build_translated_string
|
|
|
2155 ("structure keyword already seen"),
|
|
|
2156 keyword)));
|
|
|
2157
|
|
|
2158 for (i = 0; i < keyword_count; i++)
|
|
|
2159 {
|
|
|
2160 en = Dynarr_atp (st->keywords, i);
|
|
|
2161 if (EQ (keyword, en->keyword))
|
|
|
2162 break;
|
|
|
2163 }
|
|
|
2164
|
|
|
2165 if (i == keyword_count)
|
|
|
2166 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2167 list2 (build_translated_string
|
|
|
2168 ("unrecognized structure keyword"),
|
|
|
2169 keyword)));
|
|
|
2170
|
|
|
2171 if (en->validate && ! (en->validate) (keyword, value, ERROR_ME))
|
|
|
2172 RETURN_UNGCPRO
|
|
|
2173 (Fsignal (Qinvalid_read_syntax,
|
|
|
2174 list3 (build_translated_string
|
|
|
2175 ("invalid value for structure keyword"),
|
|
|
2176 keyword, value)));
|
|
|
2177
|
|
|
2178 already_seen = Fcons (keyword, already_seen);
|
|
|
2179 }
|
|
|
2180
|
|
|
2181 if (st->validate && ! (st->validate) (orig_list, ERROR_ME))
|
|
|
2182 RETURN_UNGCPRO (Fsignal (Qinvalid_read_syntax,
|
|
|
2183 list2 (build_translated_string
|
|
|
2184 ("invalid structure initializer"),
|
|
|
2185 orig_list)));
|
|
|
2186
|
|
|
2187 RETURN_UNGCPRO ((st->instantiate) (XCDR (orig_list)));
|
|
|
2188 }
|
|
|
2189
|
|
|
2190
|
|
|
2191 static Lisp_Object read_compiled_function (Lisp_Object readcharfun,
|
|
|
2192 int terminator);
|
|
|
2193 static Lisp_Object read_vector (Lisp_Object readcharfun, int terminator);
|
|
|
2194
|
|
|
2195 /* Get the next character; filter out whitespace and comments */
|
|
|
2196
|
|
|
2197 static Emchar
|
|
|
2198 reader_nextchar (Lisp_Object readcharfun)
|
|
|
2199 {
|
|
|
2200 /* This function can GC */
|
|
|
2201 Emchar c;
|
|
|
2202
|
|
|
2203 retry:
|
|
|
2204 QUIT;
|
|
|
2205 c = readchar (readcharfun);
|
|
|
2206 if (c < 0)
|
|
|
2207 signal_error (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2208
|
|
|
2209 switch (c)
|
|
|
2210 {
|
|
|
2211 default:
|
|
|
2212 {
|
|
|
2213 /* Ignore whitespace and control characters */
|
|
|
2214 if (c <= 040)
|
|
|
2215 goto retry;
|
|
|
2216 return c;
|
|
|
2217 }
|
|
|
2218
|
|
|
2219 case ';':
|
|
|
2220 {
|
|
|
2221 /* Comment */
|
|
|
2222 while ((c = readchar (readcharfun)) >= 0 && c != '\n')
|
|
|
2223 QUIT;
|
|
|
2224 goto retry;
|
|
|
2225 }
|
|
|
2226 }
|
|
|
2227 }
|
|
|
2228
|
|
|
2229 #if 0
|
|
|
2230 static Lisp_Object
|
|
|
2231 list2_pure (int pure, Lisp_Object a, Lisp_Object b)
|
|
|
2232 {
|
|
|
2233 return pure ? pure_cons (a, pure_cons (b, Qnil)) : list2 (a, b);
|
|
|
2234 }
|
|
|
2235 #endif
|
|
|
2236
|
|
|
2237 /* Read the next Lisp object from the stream READCHARFUN and return it.
|
|
|
2238 If the return value is a cons whose car is Qunbound, then read1()
|
|
|
2239 encountered a misplaced token (e.g. a right bracket, right paren,
|
|
|
2240 or dot followed by a non-number). To filter this stuff out,
|
|
|
2241 use read0(). */
|
|
|
2242
|
|
|
2243 static Lisp_Object
|
|
|
2244 read1 (Lisp_Object readcharfun)
|
|
|
2245 {
|
|
|
2246 Emchar c;
|
|
|
2247
|
|
|
2248 retry:
|
|
|
2249 c = reader_nextchar (readcharfun);
|
|
|
2250
|
|
|
2251 switch (c)
|
|
|
2252 {
|
|
|
2253 case '(':
|
|
|
2254 {
|
|
|
2255 #ifdef LISP_BACKQUOTES /* old backquote compatibility in lisp reader */
|
|
|
2256 /* if this is disabled, then other code in eval.c must be enabled */
|
|
|
2257 Emchar ch = reader_nextchar (readcharfun);
|
|
|
2258 switch (ch)
|
|
|
2259 {
|
|
|
2260 case '`':
|
|
|
2261 {
|
|
|
2262 Lisp_Object tem;
|
|
|
2263 int speccount = specpdl_depth ();
|
|
|
2264 ++old_backquote_flag;
|
|
|
2265 record_unwind_protect (backquote_unwind,
|
|
|
2266 make_opaque_ptr (&old_backquote_flag));
|
|
|
2267 tem = read0 (readcharfun);
|
|
|
2268 unbind_to (speccount, Qnil);
|
|
|
2269 ch = reader_nextchar (readcharfun);
|
|
|
2270 if (ch != ')')
|
|
|
2271 {
|
|
|
2272 unreadchar (readcharfun, ch);
|
|
|
2273 return Fsignal (Qinvalid_read_syntax,
|
|
|
2274 list1 (build_string
|
|
|
2275 ("Weird old-backquote syntax")));
|
|
|
2276 }
|
|
|
2277 return list2 (Qbacktick, tem);
|
|
|
2278 }
|
|
|
2279 case ',':
|
|
|
2280 {
|
|
|
2281 if (old_backquote_flag)
|
|
|
2282 {
|
|
|
2283 Lisp_Object tem, comma_type;
|
|
|
2284 ch = readchar (readcharfun);
|
|
|
2285 if (ch == '@')
|
|
|
2286 comma_type = Qcomma_at;
|
|
|
2287 else
|
|
|
2288 {
|
|
|
2289 if (ch >= 0)
|
|
|
2290 unreadchar (readcharfun, ch);
|
|
|
2291 comma_type = Qcomma;
|
|
|
2292 }
|
|
|
2293 tem = read0 (readcharfun);
|
|
|
2294 ch = reader_nextchar (readcharfun);
|
|
|
2295 if (ch != ')')
|
|
|
2296 {
|
|
|
2297 unreadchar (readcharfun, ch);
|
|
|
2298 return Fsignal (Qinvalid_read_syntax,
|
|
|
2299 list1 (build_string
|
|
|
2300 ("Weird old-backquote syntax")));
|
|
|
2301 }
|
|
|
2302 return list2 (comma_type, tem);
|
|
|
2303 }
|
|
|
2304 else
|
|
|
2305 {
|
|
|
2306 unreadchar (readcharfun, ch);
|
|
|
2307 #if 0
|
|
|
2308 return Fsignal (Qinvalid_read_syntax,
|
|
|
2309 list1 (build_string ("Comma outside of backquote")));
|
|
|
2310 #else
|
|
|
2311 /* #### - yuck....but this is reverse compatible. */
|
|
|
2312 /* mostly this is required by edebug, which does its own
|
|
|
2313 annotated reading. We need to have an annotated_read
|
|
|
2314 function that records (with markers) the buffer
|
|
|
2315 positions of the elements that make up lists, then that
|
|
|
2316 can be used in edebug and bytecomp and the check above
|
|
|
2317 can go back in. --Stig */
|
|
|
2318 break;
|
|
|
2319 #endif
|
|
|
2320 }
|
|
|
2321 }
|
|
|
2322 default:
|
|
|
2323 unreadchar (readcharfun, ch);
|
|
|
2324 } /* switch(ch) */
|
|
|
2325 #endif /* old backquote crap... */
|
|
|
2326 return read_list (readcharfun, ')', 1, 1);
|
|
|
2327 }
|
|
|
2328 case '[':
|
|
|
2329 return read_vector (readcharfun, ']');
|
|
|
2330
|
|
|
2331 case ')':
|
|
|
2332 case ']':
|
|
|
2333 /* #### - huh? these don't do what they seem... */
|
|
|
2334 return noseeum_cons (Qunbound, make_char (c));
|
|
|
2335 case '.':
|
|
|
2336 {
|
|
|
2337 #ifdef LISP_FLOAT_TYPE
|
|
|
2338 /* If a period is followed by a number, then we should read it
|
|
|
2339 as a floating point number. Otherwise, it denotes a dotted
|
|
|
2340 pair.
|
|
|
2341 */
|
|
|
2342 c = readchar (readcharfun);
|
|
|
2343 unreadchar (readcharfun, c);
|
|
|
2344
|
|
|
2345 /* Can't use isdigit on Emchars */
|
|
|
2346 if (c < '0' || c > '9')
|
|
|
2347 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2348
|
|
|
2349 /* Note that read_atom will loop
|
|
|
2350 at least once, assuring that we will not try to UNREAD
|
|
|
2351 two characters in a row.
|
|
|
2352 (I think this doesn't matter anymore because there should
|
|
|
2353 be no more danger in unreading multiple characters) */
|
|
|
2354 return read_atom (readcharfun, '.', 0);
|
|
|
2355
|
|
|
2356 #else /* ! LISP_FLOAT_TYPE */
|
|
|
2357 return noseeum_cons (Qunbound, make_char ('.'));
|
|
|
2358 #endif /* ! LISP_FLOAT_TYPE */
|
|
|
2359 }
|
|
|
2360
|
|
|
2361 case '#':
|
|
|
2362 {
|
|
|
2363 c = readchar (readcharfun);
|
|
|
2364 switch (c)
|
|
|
2365 {
|
|
|
2366 #if 0 /* FSFmacs silly char-table syntax */
|
|
|
2367 case '^':
|
|
|
2368 #endif
|
|
|
2369 #if 0 /* FSFmacs silly bool-vector syntax */
|
|
|
2370 case '&':
|
|
|
2371 #endif
|
|
|
2372 /* "#["-- byte-code constant syntax */
|
|
|
2373 /* purecons #[...] syntax */
|
|
|
2374 case '[': return read_compiled_function (readcharfun, ']'
|
|
|
2375 /*, purify_flag */ );
|
|
|
2376 /* "#:"-- gensym syntax */
|
|
|
2377 case ':': return read_atom (readcharfun, -1, 1);
|
|
|
2378 /* #'x => (function x) */
|
|
|
2379 case '\'': return list2 (Qfunction, read0 (readcharfun));
|
|
|
2380 #if 0
|
|
|
2381 /* RMS uses this syntax for fat-strings.
|
|
|
2382 If we use it for vectors, then obscure bugs happen.
|
|
|
2383 */
|
|
|
2384 /* "#(" -- Scheme/CL vector syntax */
|
|
|
2385 case '(': return read_vector (readcharfun, ')');
|
|
|
2386 #endif
|
|
|
2387 #if 0 /* FSFmacs */
|
|
|
2388 case '(':
|
|
|
2389 {
|
|
|
2390 Lisp_Object tmp;
|
|
|
2391 struct gcpro gcpro1;
|
|
|
2392
|
|
|
2393 /* Read the string itself. */
|
|
|
2394 tmp = read1 (readcharfun);
|
|
|
2395 if (!STRINGP (tmp))
|
|
|
2396 {
|
|
|
2397 if (CONSP (tmp) && UNBOUNDP (XCAR (tmp)))
|
|
|
2398 free_cons (XCONS (tmp));
|
|
|
2399 return Fsignal (Qinvalid_read_syntax,
|
|
|
2400 list1 (build_string ("#")));
|
|
|
2401 }
|
|
|
2402 GCPRO1 (tmp);
|
|
|
2403 /* Read the intervals and their properties. */
|
|
|
2404 while (1)
|
|
|
2405 {
|
|
|
2406 Lisp_Object beg, end, plist;
|
|
|
2407 Emchar ch;
|
|
|
2408 int invalid = 0;
|
|
|
2409
|
|
|
2410 beg = read1 (readcharfun);
|
|
|
2411 if (CONSP (beg) && UNBOUNDP (XCAR (beg)))
|
|
|
2412 {
|
|
|
2413 ch = XCHAR (XCDR (beg));
|
|
|
2414 free_cons (XCONS (beg));
|
|
|
2415 if (ch == ')')
|
|
|
2416 break;
|
|
|
2417 else
|
|
|
2418 invalid = 1;
|
|
|
2419 }
|
|
|
2420 if (!invalid)
|
|
|
2421 {
|
|
|
2422 end = read1 (readcharfun);
|
|
|
2423 if (CONSP (end) && UNBOUNDP (XCAR (end)))
|
|
|
2424 {
|
|
|
2425 free_cons (XCONS (end));
|
|
|
2426 invalid = 1;
|
|
|
2427 }
|
|
|
2428 }
|
|
|
2429 if (!invalid)
|
|
|
2430 {
|
|
|
2431 plist = read1 (readcharfun);
|
|
|
2432 if (CONSP (plist) && UNBOUNDP (XCAR (plist)))
|
|
|
2433 {
|
|
|
2434 free_cons (XCONS (plist));
|
|
|
2435 invalid = 1;
|
|
|
2436 }
|
|
|
2437 }
|
|
|
2438 if (invalid)
|
|
|
2439 RETURN_UNGCPRO
|
|
|
2440 (Fsignal (Qinvalid_read_syntax,
|
|
|
2441 list2
|
|
|
2442 (build_string ("invalid string property list"),
|
|
|
2443 XCDR (plist))));
|
|
|
2444 Fset_text_properties (beg, end, plist, tmp);
|
|
|
2445 }
|
|
|
2446 UNGCPRO;
|
|
|
2447 return tmp;
|
|
|
2448 }
|
|
|
2449 #endif /* 0 */
|
|
|
2450 case '@':
|
|
|
2451 {
|
|
|
2452 /* #@NUMBER is used to skip NUMBER following characters.
|
|
|
2453 That's used in .elc files to skip over doc strings
|
|
|
2454 and function definitions. */
|
|
|
2455 int i, nskip = 0;
|
|
|
2456
|
|
|
2457 /* Read a decimal integer. */
|
|
|
2458 while ((c = readchar (readcharfun)) >= 0
|
|
|
2459 && c >= '0' && c <= '9')
|
|
|
2460 nskip = (10 * nskip) + (c - '0');
|
|
|
2461 if (c >= 0)
|
|
|
2462 unreadchar (readcharfun, c);
|
|
|
2463
|
|
|
2464 /* FSF has code here that maybe caches the skipped
|
|
|
2465 string. See above for why this is totally
|
|
|
2466 losing. We handle this differently. */
|
|
|
2467
|
|
|
2468 /* Skip that many characters. */
|
|
|
2469 for (i = 0; i < nskip && c >= 0; i++)
|
|
|
2470 c = readchar (readcharfun);
|
|
|
2471
|
|
|
2472 goto retry;
|
|
|
2473 }
|
|
|
2474 case '$': return Vload_file_name_internal;
|
|
|
2475 /* bit vectors */
|
|
|
2476 case '*': return read_bit_vector (readcharfun);
|
|
|
2477 /* #o10 => 8 -- octal constant syntax */
|
|
|
2478 case 'o': return read_integer (readcharfun, 8);
|
|
|
2479 /* #xdead => 57005 -- hex constant syntax */
|
|
|
2480 case 'x': return read_integer (readcharfun, 16);
|
|
|
2481 /* #b010 => 2 -- binary constant syntax */
|
|
|
2482 case 'b': return read_integer (readcharfun, 2);
|
|
|
2483 /* #s(foobar key1 val1 key2 val2) -- structure syntax */
|
|
|
2484 case 's': return read_structure (readcharfun);
|
|
|
2485 case '<':
|
|
|
2486 {
|
|
|
2487 unreadchar (readcharfun, c);
|
|
|
2488 return Fsignal (Qinvalid_read_syntax,
|
|
|
2489 list1 (build_string ("Cannot read unreadable object")));
|
|
|
2490 }
|
|
|
2491 #ifdef FEATUREP_SYNTAX
|
|
|
2492 case '+':
|
|
|
2493 case '-':
|
|
|
2494 {
|
|
|
2495 Lisp_Object fexp, obj, tem;
|
|
|
2496 struct gcpro gcpro1, gcpro2;
|
|
|
2497
|
|
|
2498 fexp = read0(readcharfun);
|
|
|
2499 obj = read0(readcharfun);
|
|
|
2500
|
|
|
2501 /* the call to `featurep' may GC. */
|
|
|
2502 GCPRO2 (fexp, obj);
|
|
|
2503 tem = call1 (Qfeaturep, fexp);
|
|
|
2504 UNGCPRO;
|
|
|
2505
|
|
|
2506 if (c == '+' && NILP(tem)) goto retry;
|
|
|
2507 if (c == '-' && !NILP(tem)) goto retry;
|
|
|
2508 return obj;
|
|
|
2509 }
|
|
|
2510 #endif
|
|
|
2511 case '0': case '1': case '2': case '3': case '4':
|
|
|
2512 case '5': case '6': case '7': case '8': case '9':
|
|
|
2513 /* Reader forms that can reuse previously read objects. */
|
|
|
2514 {
|
|
|
2515 int n = 0;
|
|
|
2516 Lisp_Object found;
|
|
|
2517
|
|
|
2518 /* Using read_integer() here is impossible, because it
|
|
|
2519 chokes on `='. Using parse_integer() is too hard.
|
|
|
2520 So we simply read it in, and ignore overflows, which
|
|
|
2521 is safe. */
|
|
|
2522 while (c >= '0' && c <= '9')
|
|
|
2523 {
|
|
|
2524 n *= 10;
|
|
|
2525 n += c - '0';
|
|
|
2526 c = readchar (readcharfun);
|
|
|
2527 }
|
|
|
2528 found = assq_no_quit (make_int (n), Vread_objects);
|
|
|
2529 if (c == '=')
|
|
|
2530 {
|
|
|
2531 /* #n=object returns object, but associates it with
|
|
|
2532 n for #n#. */
|
|
|
2533 Lisp_Object obj;
|
|
|
2534 if (CONSP (found))
|
|
|
2535 return Fsignal (Qinvalid_read_syntax,
|
|
|
2536 list2 (build_translated_string
|
|
|
2537 ("Multiply defined symbol label"),
|
|
|
2538 make_int (n)));
|
|
|
2539 obj = read0 (readcharfun);
|
|
|
2540 Vread_objects = Fcons (Fcons (make_int (n), obj),
|
|
|
2541 Vread_objects);
|
|
|
2542 return obj;
|
|
|
2543 }
|
|
|
2544 else if (c == '#')
|
|
|
2545 {
|
|
|
2546 /* #n# returns a previously read object. */
|
|
|
2547 if (CONSP (found))
|
|
|
2548 return XCDR (found);
|
|
|
2549 else
|
|
|
2550 return Fsignal (Qinvalid_read_syntax,
|
|
|
2551 list2 (build_translated_string
|
|
|
2552 ("Undefined symbol label"),
|
|
|
2553 make_int (n)));
|
|
|
2554 }
|
|
|
2555 return Fsignal (Qinvalid_read_syntax,
|
|
|
2556 list1 (build_string ("#")));
|
|
|
2557 }
|
|
|
2558 default:
|
|
|
2559 {
|
|
|
2560 unreadchar (readcharfun, c);
|
|
|
2561 return Fsignal (Qinvalid_read_syntax,
|
|
|
2562 list1 (build_string ("#")));
|
|
|
2563 }
|
|
|
2564 }
|
|
|
2565 }
|
|
|
2566
|
|
|
2567 /* Quote */
|
|
|
2568 case '\'': return list2 (Qquote, read0 (readcharfun));
|
|
|
2569
|
|
|
2570 #ifdef LISP_BACKQUOTES
|
|
|
2571 case '`':
|
|
|
2572 {
|
|
|
2573 Lisp_Object tem;
|
|
|
2574 int speccount = specpdl_depth ();
|
|
|
2575 ++new_backquote_flag;
|
|
|
2576 record_unwind_protect (backquote_unwind,
|
|
|
2577 make_opaque_ptr (&new_backquote_flag));
|
|
|
2578 tem = read0 (readcharfun);
|
|
|
2579 unbind_to (speccount, Qnil);
|
|
|
2580 return list2 (Qbackquote, tem);
|
|
|
2581 }
|
|
|
2582
|
|
|
2583 case ',':
|
|
|
2584 {
|
|
|
2585 if (new_backquote_flag)
|
|
|
2586 {
|
|
|
2587 Lisp_Object comma_type = Qnil;
|
|
|
2588 int ch = readchar (readcharfun);
|
|
|
2589
|
|
|
2590 if (ch == '@')
|
|
|
2591 comma_type = Qcomma_at;
|
|
|
2592 else if (ch == '.')
|
|
|
2593 comma_type = Qcomma_dot;
|
|
|
2594 else
|
|
|
2595 {
|
|
|
2596 if (ch >= 0)
|
|
|
2597 unreadchar (readcharfun, ch);
|
|
|
2598 comma_type = Qcomma;
|
|
|
2599 }
|
|
|
2600 return list2 (comma_type, read0 (readcharfun));
|
|
|
2601 }
|
|
|
2602 else
|
|
|
2603 {
|
|
|
2604 /* YUCK. 99.999% backwards compatibility. The Right
|
|
|
2605 Thing(tm) is to signal an error here, because it's
|
|
|
2606 really invalid read syntax. Instead, this permits
|
|
|
2607 commas to begin symbols (unless they're inside
|
|
|
2608 backquotes). If an error is signalled here in the
|
|
|
2609 future, then commas should be invalid read syntax
|
|
|
2610 outside of backquotes anywhere they're found (i.e.
|
|
|
2611 they must be quoted in symbols) -- Stig */
|
|
|
2612 return read_atom (readcharfun, c, 0);
|
|
|
2613 }
|
|
|
2614 }
|
|
|
2615 #endif
|
|
|
2616
|
|
|
2617 case '?':
|
|
|
2618 {
|
|
|
2619 /* Evil GNU Emacs "character" (ie integer) syntax */
|
|
|
2620 c = readchar (readcharfun);
|
|
|
2621 if (c < 0)
|
|
|
2622 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2623
|
|
|
2624 if (c == '\\')
|
|
|
2625 c = read_escape (readcharfun);
|
|
|
2626 return make_char (c);
|
|
|
2627 }
|
|
|
2628
|
|
|
2629 case '\"':
|
|
|
2630 {
|
|
|
2631 /* String */
|
|
|
2632 #ifdef I18N3
|
|
|
2633 /* #### If the input stream is translating, then the string
|
|
|
2634 should be marked as translatable by setting its
|
|
|
2635 `string-translatable' property to t. .el and .elc files
|
|
|
2636 normally are translating input streams. See Fgettext()
|
|
|
2637 and print_internal(). */
|
|
|
2638 #endif
|
|
|
2639 int cancel = 0;
|
|
|
2640
|
|
|
2641 Lstream_rewind (XLSTREAM (Vread_buffer_stream));
|
|
|
2642 while ((c = readchar (readcharfun)) >= 0
|
|
|
2643 && c != '\"')
|
|
|
2644 {
|
|
|
2645 if (c == '\\')
|
|
|
2646 c = read_escape (readcharfun);
|
|
|
2647 /* c is -1 if \ newline has just been seen */
|
|
|
2648 if (c == -1)
|
|
|
2649 {
|
|
|
2650 if (Lstream_byte_count (XLSTREAM (Vread_buffer_stream)) == 0)
|
|
|
2651 cancel = 1;
|
|
|
2652 }
|
|
|
2653 else
|
|
|
2654 Lstream_put_emchar (XLSTREAM (Vread_buffer_stream), c);
|
|
|
2655 QUIT;
|
|
|
2656 }
|
|
|
2657 if (c < 0)
|
|
|
2658 return Fsignal (Qend_of_file, list1 (READCHARFUN_MAYBE (readcharfun)));
|
|
|
2659
|
|
|
2660 /* If purifying, and string starts with \ newline,
|
|
|
2661 return zero instead. This is for doc strings
|
|
|
2662 that we are really going to find in lib-src/DOC.nn.nn */
|
|
|
2663 if (purify_flag && NILP (Vinternal_doc_file_name) && cancel)
|
|
|
2664 return Qzero;
|
|
|
2665
|
|
|
2666 Lstream_flush (XLSTREAM (Vread_buffer_stream));
|
|
|
2667 return
|
|
|
2668 make_string
|
|
|
2669 (resizing_buffer_stream_ptr (XLSTREAM (Vread_buffer_stream)),
|
|
|
2670 Lstream_byte_count (XLSTREAM (Vread_buffer_stream)));
|
|
|
2671 }
|
|
|
2672
|
|
|
2673 default:
|
|
|
2674 {
|
|
|
2675 /* Ignore whitespace and control characters */
|
|
|
2676 if (c <= 040)
|
|
|
2677 goto retry;
|
|
|
2678 return read_atom (readcharfun, c, 0);
|
|
|
2679 }
|
|
|
2680 }
|
|
|
2681 }
|
|
|
2682
|
|
|
2683
|
|
|
2684
|
|
|
2685 #ifdef LISP_FLOAT_TYPE
|
|
|
2686
|
|
|
2687 #define LEAD_INT 1
|
|
|
2688 #define DOT_CHAR 2
|
|
|
2689 #define TRAIL_INT 4
|
|
|
2690 #define E_CHAR 8
|
|
|
2691 #define EXP_INT 16
|
|
|
2692
|
|
|
2693 int
|
|
|
2694 isfloat_string (CONST char *cp)
|
|
|
2695 {
|
|
|
2696 int state = 0;
|
|
|
2697 CONST Bufbyte *ucp = (CONST Bufbyte *) cp;
|
|
|
2698
|
|
|
2699 if (*ucp == '+' || *ucp == '-')
|
|
|
2700 ucp++;
|
|
|
2701
|
|
|
2702 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2703 {
|
|
|
2704 state |= LEAD_INT;
|
|
|
2705 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2706 ucp++;
|
|
|
2707 }
|
|
|
2708 if (*ucp == '.')
|
|
|
2709 {
|
|
|
2710 state |= DOT_CHAR;
|
|
|
2711 ucp++;
|
|
|
2712 }
|
|
|
2713 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2714 {
|
|
|
2715 state |= TRAIL_INT;
|
|
|
2716 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2717 ucp++;
|
|
|
2718 }
|
|
|
2719 if (*ucp == 'e' || *ucp == 'E')
|
|
|
2720 {
|
|
|
2721 state |= E_CHAR;
|
|
|
2722 ucp++;
|
|
|
2723 if ((*ucp == '+') || (*ucp == '-'))
|
|
|
2724 ucp++;
|
|
|
2725 }
|
|
|
2726
|
|
|
2727 if (*ucp >= '0' && *ucp <= '9')
|
|
|
2728 {
|
|
|
2729 state |= EXP_INT;
|
|
|
2730 while (*ucp >= '0' && *ucp <= '9')
|
|
|
2731 ucp++;
|
|
|
2732 }
|
|
|
2733 return (((*ucp == 0) || (*ucp == ' ') || (*ucp == '\t') || (*ucp == '\n')
|
|
|
2734 || (*ucp == '\r') || (*ucp == '\f'))
|
|
|
2735 && (state == (LEAD_INT|DOT_CHAR|TRAIL_INT)
|
|
|
2736 || state == (DOT_CHAR|TRAIL_INT)
|
|
|
2737 || state == (LEAD_INT|E_CHAR|EXP_INT)
|
|
|
2738 || state == (LEAD_INT|DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)
|
|
|
2739 || state == (DOT_CHAR|TRAIL_INT|E_CHAR|EXP_INT)));
|
|
|
2740 }
|
|
|
2741 #endif /* LISP_FLOAT_TYPE */
|
|
|
2742
|
|
|
2743 static void *
|
|
|
2744 sequence_reader (Lisp_Object readcharfun,
|
|
|
2745 Emchar terminator,
|
|
|
2746 void *state,
|
|
|
2747 void * (*conser) (Lisp_Object readcharfun,
|
|
|
2748 void *state, Charcount len))
|
|
|
2749 {
|
|
|
2750 Charcount len;
|
|
|
2751
|
|
|
2752 for (len = 0; ; len++)
|
|
|
2753 {
|
|
|
2754 Emchar ch;
|
|
|
2755
|
|
|
2756 QUIT;
|
|
|
2757 ch = reader_nextchar (readcharfun);
|
|
|
2758
|
|
|
2759 if (ch == terminator)
|
|
|
2760 return state;
|
|
|
2761 else
|
|
|
2762 unreadchar (readcharfun, ch);
|
|
|
2763 #ifdef FEATUREP_SYNTAX
|
|
|
2764 if (ch == ']')
|
|
|
2765 syntax_error ("\"]\" in a list");
|
|
|
2766 else if (ch == ')')
|
|
|
2767 syntax_error ("\")\" in a vector");
|
|
|
2768 #endif
|
|
|
2769 state = ((conser) (readcharfun, state, len));
|
|
|
2770 }
|
|
|
2771 }
|
|
|
2772
|
|
|
2773
|
|
|
2774 struct read_list_state
|
|
|
2775 {
|
|
|
2776 Lisp_Object head;
|
|
|
2777 Lisp_Object tail;
|
|
|
2778 int length;
|
|
|
2779 int allow_dotted_lists;
|
|
|
2780 Emchar terminator;
|
|
|
2781 };
|
|
|
2782
|
|
|
2783 static void *
|
|
|
2784 read_list_conser (Lisp_Object readcharfun, void *state, Charcount len)
|
|
|
2785 {
|
|
|
2786 struct read_list_state *s = (struct read_list_state *) state;
|
|
|
2787 Lisp_Object elt;
|
|
|
2788
|
|
|
2789 elt = read1 (readcharfun);
|
|
|
2790
|
|
|
2791 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2792 {
|
|
|
2793 Lisp_Object tem = elt;
|
|
|
2794 Emchar ch;
|
|
|
2795
|
|
|
2796 elt = XCDR (elt);
|
|
|
2797 free_cons (XCONS (tem));
|
|
|
2798 tem = Qnil;
|
|
|
2799 ch = XCHAR (elt);
|
|
|
2800 #ifdef FEATUREP_SYNTAX
|
|
|
2801 if (ch == s->terminator) /* deal with #+, #- reader macros */
|
|
|
2802 {
|
|
|
2803 unreadchar (readcharfun, s->terminator);
|
|
|
2804 goto done;
|
|
|
2805 }
|
|
|
2806 else if (ch == ']')
|
|
|
2807 syntax_error ("']' in a list");
|
|
|
2808 else if (ch == ')')
|
|
|
2809 syntax_error ("')' in a vector");
|
|
|
2810 else
|
|
|
2811 #endif
|
|
|
2812 if (ch != '.')
|
|
|
2813 signal_simple_error ("BUG! Internal reader error", elt);
|
|
|
2814 else if (!s->allow_dotted_lists)
|
|
|
2815 syntax_error ("\".\" in a vector");
|
|
|
2816 else
|
|
|
2817 {
|
|
|
2818 if (!NILP (s->tail))
|
|
|
2819 XCDR (s->tail) = read0 (readcharfun);
|
|
|
2820 else
|
|
|
2821 s->head = read0 (readcharfun);
|
|
|
2822 elt = read1 (readcharfun);
|
|
|
2823 if (CONSP (elt) && UNBOUNDP (XCAR (elt)))
|
|
|
2824 {
|
|
|
2825 ch = XCHAR (XCDR (elt));
|
|
|
2826 free_cons (XCONS (elt));
|
|
|
2827 if (ch == s->terminator)
|
|
|
2828 {
|
|
|
2829 unreadchar (readcharfun, s->terminator);
|
|
|
2830 goto done;
|
|
|
2831 }
|
|
|
2832 }
|
|
|
2833 syntax_error (". in wrong context");
|
|
|
2834 }
|
|
|
2835 }
|
|
|
2836
|
|
|
2837 #if 0 /* FSFmacs defun hack, or something ... */
|
|
|
2838 if (NILP (tail) && defun_hack && EQ (elt, Qdefun) && !read_pure)
|
|
|
2839 {
|
|
|
2840 record_unwind_protect (unreadpure, Qzero);
|
|
|
2841 read_pure = 1;
|
|
|
2842 }
|
|
|
2843 #endif
|
|
|
2844
|
|
|
2845 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2846 if (s->length == 1 && s->allow_dotted_lists && EQ (XCAR (s->head), Qfset))
|
|
|
2847 {
|
|
|
2848 if (CONSP (elt) && EQ (XCAR (elt), Qquote) && CONSP (XCDR (elt)))
|
|
|
2849 Vcurrent_compiled_function_annotation = XCAR (XCDR (elt));
|
|
|
2850 else
|
|
|
2851 Vcurrent_compiled_function_annotation = elt;
|
|
|
2852 }
|
|
|
2853 #endif
|
|
|
2854
|
|
|
2855 elt = Fcons (elt, Qnil);
|
|
|
2856 if (!NILP (s->tail))
|
|
|
2857 XCDR (s->tail) = elt;
|
|
|
2858 else
|
|
|
2859 s->head = elt;
|
|
|
2860 s->tail = elt;
|
|
|
2861 done:
|
|
|
2862 s->length++;
|
|
|
2863 return s;
|
|
|
2864 }
|
|
|
2865
|
|
|
2866
|
|
|
2867 #if 0 /* FSFmacs defun hack */
|
|
|
2868 /* -1 for allow_dotted_lists means allow_dotted_lists and check
|
|
|
2869 for starting with defun and make structure pure. */
|
|
|
2870 #endif
|
|
|
2871
|
|
|
2872 static Lisp_Object
|
|
|
2873 read_list (Lisp_Object readcharfun,
|
|
|
2874 Emchar terminator,
|
|
|
2875 int allow_dotted_lists,
|
|
|
2876 int check_for_doc_references)
|
|
|
2877 {
|
|
|
2878 struct read_list_state s;
|
|
|
2879 struct gcpro gcpro1, gcpro2;
|
|
|
2880 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2881 Lisp_Object old_compiled_function_annotation =
|
|
|
2882 Vcurrent_compiled_function_annotation;
|
|
|
2883 #endif
|
|
|
2884
|
|
|
2885 s.head = Qnil;
|
|
|
2886 s.tail = Qnil;
|
|
|
2887 s.length = 0;
|
|
|
2888 s.allow_dotted_lists = allow_dotted_lists;
|
|
|
2889 s.terminator = terminator;
|
|
|
2890 GCPRO2 (s.head, s.tail);
|
|
|
2891
|
|
|
2892 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2893 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
2894 Vcurrent_compiled_function_annotation = old_compiled_function_annotation;
|
|
|
2895 #endif
|
|
|
2896
|
|
|
2897 if ((purify_flag || load_force_doc_strings) && check_for_doc_references)
|
|
|
2898 {
|
|
|
2899 /* check now for any doc string references and record them
|
|
|
2900 for later. */
|
|
|
2901 Lisp_Object tail;
|
|
|
2902
|
|
|
2903 /* We might be dealing with an imperfect list so don't
|
|
|
2904 use LIST_LOOP */
|
|
|
2905 for (tail = s.head; CONSP (tail); tail = XCDR (tail))
|
|
|
2906 {
|
|
|
2907 Lisp_Object holding_cons = Qnil;
|
|
|
2908
|
|
|
2909 {
|
|
|
2910 Lisp_Object elem = XCAR (tail);
|
|
|
2911 /* elem might be (#$ . INT) ... */
|
|
|
2912 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2913 holding_cons = tail;
|
|
|
2914 /* or it might be (quote (#$ . INT)) i.e.
|
|
|
2915 (quote . ((#$ . INT) . nil)) in the case of
|
|
|
2916 `autoload' (autoload evaluates its arguments, while
|
|
|
2917 `defvar', `defun', etc. don't). */
|
|
|
2918 if (CONSP (elem) && EQ (XCAR (elem), Qquote)
|
|
|
2919 && CONSP (XCDR (elem)))
|
|
|
2920 {
|
|
|
2921 elem = XCAR (XCDR (elem));
|
|
|
2922 if (CONSP (elem) && EQ (XCAR (elem), Vload_file_name_internal))
|
|
|
2923 holding_cons = XCDR (XCAR (tail));
|
|
|
2924 }
|
|
|
2925 }
|
|
|
2926
|
|
|
2927 if (CONSP (holding_cons))
|
|
|
2928 {
|
|
|
2929 if (purify_flag)
|
|
|
2930 {
|
|
|
2931 if (NILP (Vinternal_doc_file_name))
|
|
|
2932 /* We have not yet called Snarf-documentation, so
|
|
|
2933 assume this file is described in the DOC file
|
|
|
2934 and Snarf-documentation will fill in the right
|
|
|
2935 value later. For now, replace the whole list
|
|
|
2936 with 0. */
|
|
|
2937 XCAR (holding_cons) = Qzero;
|
|
|
2938 else
|
|
|
2939 /* We have already called Snarf-documentation, so
|
|
|
2940 make a relative file name for this file, so it
|
|
|
2941 can be found properly in the installed Lisp
|
|
|
2942 directory. We don't use Fexpand_file_name
|
|
|
2943 because that would make the directory absolute
|
|
|
2944 now. */
|
|
|
2945 XCAR (XCAR (holding_cons)) =
|
|
|
2946 concat2 (build_string ("../lisp/"),
|
|
|
2947 Ffile_name_nondirectory
|
|
|
2948 (Vload_file_name_internal));
|
|
|
2949 }
|
|
|
2950 else
|
|
|
2951 /* Not pure. Just add to Vload_force_doc_string_list,
|
|
|
2952 and the string will be filled in properly in
|
|
|
2953 load_force_doc_string_unwind(). */
|
|
|
2954 Vload_force_doc_string_list =
|
|
|
2955 /* We pass the cons that holds the (#$ . INT) so we
|
|
|
2956 can modify it in-place. */
|
|
|
2957 Fcons (holding_cons, Vload_force_doc_string_list);
|
|
|
2958 }
|
|
|
2959 }
|
|
|
2960 }
|
|
|
2961
|
|
|
2962 UNGCPRO;
|
|
|
2963 return s.head;
|
|
|
2964 }
|
|
|
2965
|
|
|
2966 static Lisp_Object
|
|
|
2967 read_vector (Lisp_Object readcharfun,
|
|
|
2968 Emchar terminator)
|
|
|
2969 {
|
|
|
2970 Lisp_Object tem;
|
|
|
2971 Lisp_Object *p;
|
|
|
2972 int len;
|
|
|
2973 int i;
|
|
|
2974 struct read_list_state s;
|
|
|
2975 struct gcpro gcpro1, gcpro2;
|
|
|
2976
|
|
|
2977 s.head = Qnil;
|
|
|
2978 s.tail = Qnil;
|
|
|
2979 s.length = 0;
|
|
|
2980 s.allow_dotted_lists = 0;
|
|
|
2981 GCPRO2 (s.head, s.tail);
|
|
|
2982
|
|
|
2983 sequence_reader (readcharfun, terminator, &s, read_list_conser);
|
|
|
2984
|
|
|
2985 UNGCPRO;
|
|
|
2986 tem = s.head;
|
|
|
2987 len = XINT (Flength (tem));
|
|
|
2988
|
|
|
2989 #if 0 /* FSFmacs defun hack */
|
|
|
2990 if (read_pure)
|
|
|
2991 s.head = make_pure_vector (len, Qnil);
|
|
|
2992 else
|
|
|
2993 #endif
|
|
|
2994 s.head = make_vector (len, Qnil);
|
|
|
2995
|
|
|
2996 for (i = 0, p = &(XVECTOR_DATA (s.head)[0]);
|
|
|
2997 i < len;
|
|
|
2998 i++, p++)
|
|
|
2999 {
|
|
|
3000 struct Lisp_Cons *otem = XCONS (tem);
|
|
|
3001 tem = Fcar (tem);
|
|
|
3002 *p = tem;
|
|
|
3003 tem = otem->cdr;
|
|
|
3004 free_cons (otem);
|
|
|
3005 }
|
|
|
3006 return s.head;
|
|
|
3007 }
|
|
|
3008
|
|
|
3009 static Lisp_Object
|
|
|
3010 read_compiled_function (Lisp_Object readcharfun, Emchar terminator)
|
|
|
3011 {
|
|
|
3012 /* Accept compiled functions at read-time so that we don't
|
|
|
3013 have to build them at load-time. */
|
|
|
3014 Lisp_Object stuff;
|
|
|
3015 Lisp_Object make_byte_code_args[COMPILED_DOMAIN + 1];
|
|
|
3016 struct gcpro gcpro1;
|
|
|
3017 int len;
|
|
|
3018 int iii;
|
|
|
3019 int saw_a_doc_ref = 0;
|
|
|
3020
|
|
|
3021 /* Note: we tell read_list not to search for doc references
|
|
|
3022 because we need to handle the "doc reference" for the
|
|
|
3023 instructions and constants differently. */
|
|
|
3024 stuff = read_list (readcharfun, terminator, 0, 0);
|
|
|
3025 len = XINT (Flength (stuff));
|
|
|
3026 if (len < COMPILED_STACK_DEPTH + 1 || len > COMPILED_DOMAIN + 1)
|
|
|
3027 return
|
|
|
3028 continuable_syntax_error ("#[...] used with wrong number of elements");
|
|
|
3029
|
|
|
3030 for (iii = 0; CONSP (stuff); iii++)
|
|
|
3031 {
|
|
|
3032 struct Lisp_Cons *victim = XCONS (stuff);
|
|
|
3033 make_byte_code_args[iii] = Fcar (stuff);
|
|
|
3034 if ((purify_flag || load_force_doc_strings)
|
|
|
3035 && CONSP (make_byte_code_args[iii])
|
|
|
3036 && EQ (XCAR (make_byte_code_args[iii]), Vload_file_name_internal))
|
|
|
3037 {
|
|
|
3038 if (purify_flag && iii == COMPILED_DOC_STRING)
|
|
|
3039 {
|
|
|
3040 /* same as in read_list(). */
|
|
|
3041 if (NILP (Vinternal_doc_file_name))
|
|
|
3042 make_byte_code_args[iii] = Qzero;
|
|
|
3043 else
|
|
|
3044 XCAR (make_byte_code_args[iii]) =
|
|
|
3045 concat2 (build_string ("../lisp/"),
|
|
|
3046 Ffile_name_nondirectory
|
|
|
3047 (Vload_file_name_internal));
|
|
|
3048 }
|
|
|
3049 else
|
|
|
3050 saw_a_doc_ref = 1;
|
|
|
3051 }
|
|
|
3052 stuff = Fcdr (stuff);
|
|
|
3053 free_cons (victim);
|
|
|
3054 }
|
|
|
3055 GCPRO1 (make_byte_code_args[0]);
|
|
|
3056 gcpro1.nvars = len;
|
|
|
3057
|
|
|
3058 /* v18 or v19 bytecode file. Need to Ebolify. */
|
|
|
3059 if (load_byte_code_version < 20 && VECTORP (make_byte_code_args[2]))
|
|
|
3060 ebolify_bytecode_constants (make_byte_code_args[2]);
|
|
|
3061
|
|
|
3062 /* make-byte-code looks at purify_flag, which should have the same
|
|
|
3063 * value as our "read-pure" argument */
|
|
|
3064 stuff = Fmake_byte_code (len, make_byte_code_args);
|
|
|
3065 XCOMPILED_FUNCTION (stuff)->flags.ebolified = (load_byte_code_version < 20);
|
|
|
3066 if (saw_a_doc_ref)
|
|
|
3067 Vload_force_doc_string_list = Fcons (stuff, Vload_force_doc_string_list);
|
|
|
3068 UNGCPRO;
|
|
|
3069 return stuff;
|
|
|
3070 }
|
|
|
3071
|
|
|
3072
|
|
|
3073
|
|
|
3074 void
|
|
|
3075 init_lread (void)
|
|
|
3076 {
|
|
|
3077 Vvalues = Qnil;
|
|
|
3078
|
|
|
3079 load_in_progress = 0;
|
|
|
3080
|
|
|
3081 Vload_descriptor_list = Qnil;
|
|
|
3082
|
|
|
3083 /* kludge: locate-file does not work for a null load-path, even if
|
|
|
3084 the file name is absolute. */
|
|
|
3085
|
|
|
3086 Vload_path = Fcons (build_string (""), Qnil);
|
|
|
3087
|
|
|
3088 /* This used to get initialized in init_lread because all streams
|
|
|
3089 got closed when dumping occurs. This is no longer true --
|
|
|
3090 Vread_buffer_stream is a resizing output stream, and there is no
|
|
|
3091 reason to close it at dump-time.
|
|
|
3092
|
|
|
3093 Vread_buffer_stream is set to Qnil in vars_of_lread, and this
|
|
|
3094 will initialize it only once, at dump-time. */
|
|
|
3095 if (NILP (Vread_buffer_stream))
|
|
|
3096 Vread_buffer_stream = make_resizing_buffer_output_stream ();
|
|
|
3097
|
|
|
3098 Vload_force_doc_string_list = Qnil;
|
|
|
3099 }
|
|
|
3100
|
|
|
3101 void
|
|
|
3102 syms_of_lread (void)
|
|
|
3103 {
|
|
|
3104 DEFSUBR (Fread);
|
|
|
3105 DEFSUBR (Fread_from_string);
|
|
|
3106 DEFSUBR (Fload_internal);
|
|
|
3107 DEFSUBR (Flocate_file);
|
|
|
3108 DEFSUBR (Flocate_file_clear_hashing);
|
|
|
3109 DEFSUBR (Feval_buffer);
|
|
|
3110 DEFSUBR (Feval_region);
|
|
|
3111
|
|
|
3112 defsymbol (&Qstandard_input, "standard-input");
|
|
|
3113 defsymbol (&Qread_char, "read-char");
|
|
|
3114 defsymbol (&Qcurrent_load_list, "current-load-list");
|
|
|
3115 defsymbol (&Qload, "load");
|
|
|
3116 defsymbol (&Qload_file_name, "load-file-name");
|
|
|
3117 defsymbol (&Qfset, "fset");
|
|
|
3118
|
|
|
3119 #ifdef LISP_BACKQUOTES
|
|
|
3120 defsymbol (&Qbackquote, "backquote");
|
|
|
3121 defsymbol (&Qbacktick, "`");
|
|
|
3122 defsymbol (&Qcomma, ",");
|
|
|
3123 defsymbol (&Qcomma_at, ",@");
|
|
|
3124 defsymbol (&Qcomma_dot, ",.");
|
|
|
3125 #endif
|
|
|
3126
|
|
|
3127 defsymbol (&Qexists, "exists");
|
|
|
3128 defsymbol (&Qreadable, "readable");
|
|
|
3129 defsymbol (&Qwritable, "writable");
|
|
|
3130 defsymbol (&Qexecutable, "executable");
|
|
|
3131 }
|
|
|
3132
|
|
|
3133 void
|
|
|
3134 structure_type_create (void)
|
|
|
3135 {
|
|
|
3136 the_structure_type_dynarr = Dynarr_new (structure_type);
|
|
|
3137 }
|
|
|
3138
|
|
|
3139 void
|
|
|
3140 reinit_vars_of_lread (void)
|
|
|
3141 {
|
|
|
3142 Vread_buffer_stream = Qnil;
|
|
|
3143 staticpro_nodump (&Vread_buffer_stream);
|
|
|
3144 }
|
|
|
3145
|
|
|
3146 void
|
|
|
3147 vars_of_lread (void)
|
|
|
3148 {
|
|
|
3149 reinit_vars_of_lread ();
|
|
|
3150
|
|
|
3151 DEFVAR_LISP ("values", &Vvalues /*
|
|
|
3152 List of values of all expressions which were read, evaluated and printed.
|
|
|
3153 Order is reverse chronological.
|
|
|
3154 */ );
|
|
|
3155
|
|
|
3156 DEFVAR_LISP ("standard-input", &Vstandard_input /*
|
|
|
3157 Stream for read to get input from.
|
|
|
3158 See documentation of `read' for possible values.
|
|
|
3159 */ );
|
|
|
3160 Vstandard_input = Qt;
|
|
|
3161
|
|
|
3162 DEFVAR_LISP ("load-path", &Vload_path /*
|
|
|
3163 *List of directories to search for files to load.
|
|
|
3164 Each element is a string (directory name) or nil (try default directory).
|
|
|
3165
|
|
|
3166 Note that the elements of this list *may not* begin with "~", so you must
|
|
|
3167 call `expand-file-name' on them before adding them to this list.
|
|
|
3168
|
|
|
3169 Initialized based on EMACSLOADPATH environment variable, if any,
|
|
|
3170 otherwise to default specified in by file `paths.h' when XEmacs was built.
|
|
|
3171 If there were no paths specified in `paths.h', then XEmacs chooses a default
|
|
|
3172 value for this variable by looking around in the file-system near the
|
|
|
3173 directory in which the XEmacs executable resides.
|
|
|
3174 */ );
|
|
|
3175 Vload_path = Qnil;
|
|
|
3176
|
|
|
3177 /* xxxDEFVAR_LISP ("dump-load-path", &Vdump_load_path,
|
|
|
3178 "*Location of lisp files to be used when dumping ONLY."); */
|
|
|
3179
|
|
|
3180 DEFVAR_BOOL ("load-in-progress", &load_in_progress /*
|
|
|
3181 Non-nil iff inside of `load'.
|
|
|
3182 */ );
|
|
|
3183
|
|
|
3184 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist /*
|
|
|
3185 An alist of expressions to be evalled when particular files are loaded.
|
|
|
3186 Each element looks like (FILENAME FORMS...).
|
|
|
3187 When `load' is run and the file-name argument is FILENAME,
|
|
|
3188 the FORMS in the corresponding element are executed at the end of loading.
|
|
|
3189
|
|
|
3190 FILENAME must match exactly! Normally FILENAME is the name of a library,
|
|
|
3191 with no directory specified, since that is how `load' is normally called.
|
|
|
3192 An error in FORMS does not undo the load,
|
|
|
3193 but does prevent execution of the rest of the FORMS.
|
|
|
3194 */ );
|
|
|
3195 Vafter_load_alist = Qnil;
|
|
|
3196
|
|
|
3197 DEFVAR_BOOL ("load-warn-when-source-newer", &load_warn_when_source_newer /*
|
|
|
3198 *Whether `load' should check whether the source is newer than the binary.
|
|
|
3199 If this variable is true, then when a `.elc' file is being loaded and the
|
|
|
3200 corresponding `.el' is newer, a warning message will be printed.
|
|
|
3201 */ );
|
|
|
3202 load_warn_when_source_newer = 0;
|
|
|
3203
|
|
|
3204 DEFVAR_BOOL ("load-warn-when-source-only", &load_warn_when_source_only /*
|
|
|
3205 *Whether `load' should warn when loading a `.el' file instead of an `.elc'.
|
|
|
3206 If this variable is true, then when `load' is called with a filename without
|
|
|
3207 an extension, and the `.elc' version doesn't exist but the `.el' version does,
|
|
|
3208 then a message will be printed. If an explicit extension is passed to `load',
|
|
|
3209 no warning will be printed.
|
|
|
3210 */ );
|
|
|
3211 load_warn_when_source_only = 0;
|
|
|
3212
|
|
|
3213 DEFVAR_BOOL ("load-ignore-elc-files", &load_ignore_elc_files /*
|
|
|
3214 *Whether `load' should ignore `.elc' files when a suffix is not given.
|
|
|
3215 This is normally used only to bootstrap the `.elc' files when building XEmacs.
|
|
|
3216 */ );
|
|
|
3217 load_ignore_elc_files = 0;
|
|
|
3218
|
|
|
3219 #ifdef LOADHIST
|
|
|
3220 DEFVAR_LISP ("load-history", &Vload_history /*
|
|
|
3221 Alist mapping source file names to symbols and features.
|
|
|
3222 Each alist element is a list that starts with a file name,
|
|
|
3223 except for one element (optional) that starts with nil and describes
|
|
|
3224 definitions evaluated from buffers not visiting files.
|
|
|
3225 The remaining elements of each list are symbols defined as functions
|
|
|
3226 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.
|
|
|
3227 */ );
|
|
|
3228 Vload_history = Qnil;
|
|
|
3229
|
|
|
3230 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list /*
|
|
|
3231 Used for internal purposes by `load'.
|
|
|
3232 */ );
|
|
|
3233 Vcurrent_load_list = Qnil;
|
|
|
3234 #endif
|
|
|
3235
|
|
|
3236 DEFVAR_LISP ("load-file-name", &Vload_file_name /*
|
|
|
3237 Full name of file being loaded by `load'.
|
|
|
3238 */ );
|
|
|
3239 Vload_file_name = Qnil;
|
|
|
3240
|
|
|
3241 DEFVAR_LISP ("load-read-function", &Vload_read_function /*
|
|
|
3242 Function used by `load' and `eval-region' for reading expressions.
|
|
|
3243 The default is nil, which means use the function `read'.
|
|
|
3244 */ );
|
|
|
3245 Vload_read_function = Qnil;
|
|
|
3246
|
|
|
3247 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings /*
|
|
|
3248 Non-nil means `load' should force-load all dynamic doc strings.
|
|
|
3249 This is useful when the file being loaded is a temporary copy.
|
|
|
3250 */ );
|
|
|
3251 load_force_doc_strings = 0;
|
|
|
3252
|
|
|
3253 /* See read_escape(). */
|
|
|
3254 #if 0
|
|
|
3255 /* Used to be named `puke-on-fsf-keys' */
|
|
|
3256 DEFVAR_BOOL ("fail-on-bucky-bit-character-escapes",
|
|
|
3257 &fail_on_bucky_bit_character_escapes /*
|
|
|
3258 Whether `read' should signal an error when it encounters unsupported
|
|
|
3259 character escape syntaxes or just read them incorrectly.
|
|
|
3260 */ );
|
|
|
3261 fail_on_bucky_bit_character_escapes = 0;
|
|
|
3262 #endif
|
|
|
3263
|
|
|
3264 /* This must be initialized in init_lread otherwise it may start out
|
|
|
3265 with values saved when the image is dumped. */
|
|
|
3266 staticpro (&Vload_descriptor_list);
|
|
|
3267
|
|
|
3268 /* Initialized in init_lread. */
|
|
|
3269 staticpro (&Vload_force_doc_string_list);
|
|
|
3270
|
|
|
3271 Vload_file_name_internal = Qnil;
|
|
|
3272 staticpro (&Vload_file_name_internal);
|
|
|
3273
|
|
|
3274 Vload_file_name_internal_the_purecopy = Qnil;
|
|
|
3275 staticpro (&Vload_file_name_internal_the_purecopy);
|
|
|
3276
|
|
|
3277 #ifdef COMPILED_FUNCTION_ANNOTATION_HACK
|
|
|
3278 Vcurrent_compiled_function_annotation = Qnil;
|
|
|
3279 staticpro (&Vcurrent_compiled_function_annotation);
|
|
|
3280 #endif
|
|
|
3281
|
|
|
3282 /* So that early-early stuff will work */
|
|
|
3283 Ffset (Qload, intern ("load-internal"));
|
|
|
3284
|
|
|
3285 #ifdef FEATUREP_SYNTAX
|
|
|
3286 defsymbol (&Qfeaturep, "featurep");
|
|
|
3287 Fprovide(intern("xemacs"));
|
|
|
3288 #ifdef INFODOCK
|
|
|
3289 Fprovide(intern("infodock"));
|
|
|
3290 #endif /* INFODOCK */
|
|
|
3291 #endif /* FEATUREP_SYNTAX */
|
|
|
3292
|
|
|
3293 #ifdef LISP_BACKQUOTES
|
|
|
3294 old_backquote_flag = new_backquote_flag = 0;
|
|
|
3295 #endif
|
|
|
3296
|
|
|
3297 #ifdef I18N3
|
|
|
3298 Vfile_domain = Qnil;
|
|
|
3299 #endif
|
|
|
3300
|
|
|
3301 Vread_objects = Qnil;
|
|
|
3302 staticpro (&Vread_objects);
|
|
|
3303
|
|
|
3304 Vlocate_file_hash_table = make_lisp_hash_table (200,
|
|
|
3305 HASH_TABLE_NON_WEAK,
|
|
|
3306 HASH_TABLE_EQUAL);
|
|
|
3307 staticpro (&Vlocate_file_hash_table);
|
|
|
3308 #ifdef DEBUG_XEMACS
|
|
|
3309 symbol_value (XSYMBOL (intern ("Vlocate-file-hash-table")))
|
|
|
3310 = Vlocate_file_hash_table;
|
|
|
3311 #endif
|
|
|
3312 }
|
