1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
26 #include <sys/types.h>
31 #include "intervals.h"
37 #include "termhooks.h"
41 #include <sys/inode.h>
46 #include <unistd.h> /* to get X_OK */
63 #endif /* HAVE_SETLOCALE */
73 #define file_offset off_t
74 #define file_tell ftello
76 #define file_offset long
77 #define file_tell ftell
84 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
85 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
86 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
87 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
88 Lisp_Object Qinhibit_file_name_operation
;
89 Lisp_Object Qeval_buffer_list
, Veval_buffer_list
;
91 extern Lisp_Object Qevent_symbol_element_mask
;
92 extern Lisp_Object Qfile_exists_p
;
94 /* non-zero iff inside `load' */
97 /* Directory in which the sources were found. */
98 Lisp_Object Vsource_directory
;
100 /* Search path and suffixes for files to be loaded. */
101 Lisp_Object Vload_path
, Vload_suffixes
, default_suffixes
;
103 /* File name of user's init file. */
104 Lisp_Object Vuser_init_file
;
106 /* This is the user-visible association list that maps features to
107 lists of defs in their load files. */
108 Lisp_Object Vload_history
;
110 /* This is used to build the load history. */
111 Lisp_Object Vcurrent_load_list
;
113 /* List of files that were preloaded. */
114 Lisp_Object Vpreloaded_file_list
;
116 /* Name of file actually being read by `load'. */
117 Lisp_Object Vload_file_name
;
119 /* Function to use for reading, in `load' and friends. */
120 Lisp_Object Vload_read_function
;
122 /* The association list of objects read with the #n=object form.
123 Each member of the list has the form (n . object), and is used to
124 look up the object for the corresponding #n# construct.
125 It must be set to nil before all top-level calls to read0. */
126 Lisp_Object read_objects
;
128 /* Nonzero means load should forcibly load all dynamic doc strings. */
129 static int load_force_doc_strings
;
131 /* Nonzero means read should convert strings to unibyte. */
132 static int load_convert_to_unibyte
;
134 /* Function to use for loading an Emacs lisp source file (not
135 compiled) instead of readevalloop. */
136 Lisp_Object Vload_source_file_function
;
138 /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */
139 Lisp_Object Vbyte_boolean_vars
;
141 /* Whether or not to add a `read-positions' property to symbols
143 Lisp_Object Vread_with_symbol_positions
;
145 /* List of (SYMBOL . POSITION) accumulated so far. */
146 Lisp_Object Vread_symbol_positions_list
;
148 /* List of descriptors now open for Fload. */
149 static Lisp_Object load_descriptor_list
;
151 /* File for get_file_char to read from. Use by load. */
152 static FILE *instream
;
154 /* When nonzero, read conses in pure space */
155 static int read_pure
;
157 /* For use within read-from-string (this reader is non-reentrant!!) */
158 static int read_from_string_index
;
159 static int read_from_string_index_byte
;
160 static int read_from_string_limit
;
162 /* Number of bytes left to read in the buffer character
163 that `readchar' has already advanced over. */
164 static int readchar_backlog
;
165 /* Number of characters read in the current call to Fread or
166 Fread_from_string. */
167 static int readchar_count
;
169 /* This contains the last string skipped with #@. */
170 static char *saved_doc_string
;
171 /* Length of buffer allocated in saved_doc_string. */
172 static int saved_doc_string_size
;
173 /* Length of actual data in saved_doc_string. */
174 static int saved_doc_string_length
;
175 /* This is the file position that string came from. */
176 static file_offset saved_doc_string_position
;
178 /* This contains the previous string skipped with #@.
179 We copy it from saved_doc_string when a new string
180 is put in saved_doc_string. */
181 static char *prev_saved_doc_string
;
182 /* Length of buffer allocated in prev_saved_doc_string. */
183 static int prev_saved_doc_string_size
;
184 /* Length of actual data in prev_saved_doc_string. */
185 static int prev_saved_doc_string_length
;
186 /* This is the file position that string came from. */
187 static file_offset prev_saved_doc_string_position
;
189 /* Nonzero means inside a new-style backquote
190 with no surrounding parentheses.
191 Fread initializes this to zero, so we need not specbind it
192 or worry about what happens to it when there is an error. */
193 static int new_backquote_flag
;
195 /* A list of file names for files being loaded in Fload. Used to
196 check for recursive loads. */
198 static Lisp_Object Vloads_in_progress
;
200 /* Non-zero means load dangerous compiled Lisp files. */
202 int load_dangerous_libraries
;
204 /* A regular expression used to detect files compiled with Emacs. */
206 static Lisp_Object Vbytecomp_version_regexp
;
208 static void to_multibyte
P_ ((char **, char **, int *));
209 static void readevalloop
P_ ((Lisp_Object
, FILE*, Lisp_Object
,
210 Lisp_Object (*) (), int,
211 Lisp_Object
, Lisp_Object
,
212 Lisp_Object
, Lisp_Object
));
213 static Lisp_Object load_unwind
P_ ((Lisp_Object
));
214 static Lisp_Object load_descriptor_unwind
P_ ((Lisp_Object
));
217 /* Handle unreading and rereading of characters.
218 Write READCHAR to read a character,
219 UNREAD(c) to unread c to be read again.
221 The READCHAR and UNREAD macros are meant for reading/unreading a
222 byte code; they do not handle multibyte characters. The caller
223 should manage them if necessary.
225 [ Actually that seems to be a lie; READCHAR will definitely read
226 multibyte characters from buffer sources, at least. Is the
227 comment just out of date?
228 -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ]
231 #define READCHAR readchar (readcharfun)
232 #define UNREAD(c) unreadchar (readcharfun, c)
235 readchar (readcharfun
)
236 Lisp_Object readcharfun
;
243 if (BUFFERP (readcharfun
))
245 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
247 int pt_byte
= BUF_PT_BYTE (inbuffer
);
248 int orig_pt_byte
= pt_byte
;
250 if (readchar_backlog
> 0)
251 /* We get the address of the byte just passed,
252 which is the last byte of the character.
253 The other bytes in this character are consecutive with it,
254 because the gap can't be in the middle of a character. */
255 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
256 - --readchar_backlog
);
258 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
261 readchar_backlog
= -1;
263 if (! NILP (inbuffer
->enable_multibyte_characters
))
265 /* Fetch the character code from the buffer. */
266 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
267 BUF_INC_POS (inbuffer
, pt_byte
);
268 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
272 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
275 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
279 if (MARKERP (readcharfun
))
281 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
283 int bytepos
= marker_byte_position (readcharfun
);
284 int orig_bytepos
= bytepos
;
286 if (readchar_backlog
> 0)
287 /* We get the address of the byte just passed,
288 which is the last byte of the character.
289 The other bytes in this character are consecutive with it,
290 because the gap can't be in the middle of a character. */
291 return *(BUF_BYTE_ADDRESS (inbuffer
, XMARKER (readcharfun
)->bytepos
- 1)
292 - --readchar_backlog
);
294 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
297 readchar_backlog
= -1;
299 if (! NILP (inbuffer
->enable_multibyte_characters
))
301 /* Fetch the character code from the buffer. */
302 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
303 BUF_INC_POS (inbuffer
, bytepos
);
304 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
308 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
312 XMARKER (readcharfun
)->bytepos
= bytepos
;
313 XMARKER (readcharfun
)->charpos
++;
318 if (EQ (readcharfun
, Qlambda
))
319 return read_bytecode_char (0);
321 if (EQ (readcharfun
, Qget_file_char
))
325 /* Interrupted reads have been observed while reading over the network */
326 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
336 if (STRINGP (readcharfun
))
338 if (read_from_string_index
>= read_from_string_limit
)
341 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
342 read_from_string_index
,
343 read_from_string_index_byte
);
348 tem
= call0 (readcharfun
);
355 /* Unread the character C in the way appropriate for the stream READCHARFUN.
356 If the stream is a user function, call it with the char as argument. */
359 unreadchar (readcharfun
, c
)
360 Lisp_Object readcharfun
;
365 /* Don't back up the pointer if we're unreading the end-of-input mark,
366 since readchar didn't advance it when we read it. */
368 else if (BUFFERP (readcharfun
))
370 struct buffer
*b
= XBUFFER (readcharfun
);
371 int bytepos
= BUF_PT_BYTE (b
);
373 if (readchar_backlog
>= 0)
378 if (! NILP (b
->enable_multibyte_characters
))
379 BUF_DEC_POS (b
, bytepos
);
383 BUF_PT_BYTE (b
) = bytepos
;
386 else if (MARKERP (readcharfun
))
388 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
389 int bytepos
= XMARKER (readcharfun
)->bytepos
;
391 if (readchar_backlog
>= 0)
395 XMARKER (readcharfun
)->charpos
--;
396 if (! NILP (b
->enable_multibyte_characters
))
397 BUF_DEC_POS (b
, bytepos
);
401 XMARKER (readcharfun
)->bytepos
= bytepos
;
404 else if (STRINGP (readcharfun
))
406 read_from_string_index
--;
407 read_from_string_index_byte
408 = string_char_to_byte (readcharfun
, read_from_string_index
);
410 else if (EQ (readcharfun
, Qlambda
))
411 read_bytecode_char (1);
412 else if (EQ (readcharfun
, Qget_file_char
))
413 ungetc (c
, instream
);
415 call1 (readcharfun
, make_number (c
));
418 static Lisp_Object read_internal_start
P_ ((Lisp_Object
, Lisp_Object
,
420 static Lisp_Object read0
P_ ((Lisp_Object
));
421 static Lisp_Object read1
P_ ((Lisp_Object
, int *, int));
423 static Lisp_Object read_list
P_ ((int, Lisp_Object
));
424 static Lisp_Object read_vector
P_ ((Lisp_Object
, int));
425 static int read_multibyte
P_ ((int, Lisp_Object
));
427 static Lisp_Object substitute_object_recurse
P_ ((Lisp_Object
, Lisp_Object
,
429 static void substitute_object_in_subtree
P_ ((Lisp_Object
,
431 static void substitute_in_interval
P_ ((INTERVAL
, Lisp_Object
));
434 /* Get a character from the tty. */
436 extern Lisp_Object
read_char ();
438 /* Read input events until we get one that's acceptable for our purposes.
440 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
441 until we get a character we like, and then stuffed into
444 If ASCII_REQUIRED is non-zero, we check function key events to see
445 if the unmodified version of the symbol has a Qascii_character
446 property, and use that character, if present.
448 If ERROR_NONASCII is non-zero, we signal an error if the input we
449 get isn't an ASCII character with modifiers. If it's zero but
450 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
453 If INPUT_METHOD is nonzero, we invoke the current input method
454 if the character warrants that. */
457 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
459 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
461 register Lisp_Object val
, delayed_switch_frame
;
463 #ifdef HAVE_WINDOW_SYSTEM
464 if (display_hourglass_p
)
468 delayed_switch_frame
= Qnil
;
470 /* Read until we get an acceptable event. */
472 val
= read_char (0, 0, 0,
473 (input_method
? Qnil
: Qt
),
479 /* switch-frame events are put off until after the next ASCII
480 character. This is better than signaling an error just because
481 the last characters were typed to a separate minibuffer frame,
482 for example. Eventually, some code which can deal with
483 switch-frame events will read it and process it. */
485 && EVENT_HAS_PARAMETERS (val
)
486 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
488 delayed_switch_frame
= val
;
494 /* Convert certain symbols to their ASCII equivalents. */
497 Lisp_Object tem
, tem1
;
498 tem
= Fget (val
, Qevent_symbol_element_mask
);
501 tem1
= Fget (Fcar (tem
), Qascii_character
);
502 /* Merge this symbol's modifier bits
503 with the ASCII equivalent of its basic code. */
505 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
509 /* If we don't have a character now, deal with it appropriately. */
514 Vunread_command_events
= Fcons (val
, Qnil
);
515 error ("Non-character input-event");
522 if (! NILP (delayed_switch_frame
))
523 unread_switch_frame
= delayed_switch_frame
;
527 #ifdef HAVE_WINDOW_SYSTEM
528 if (display_hourglass_p
)
537 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 2, 0,
538 doc
: /* Read a character from the command input (keyboard or macro).
539 It is returned as a number.
540 If the user generates an event which is not a character (i.e. a mouse
541 click or function key event), `read-char' signals an error. As an
542 exception, switch-frame events are put off until non-ASCII events can
544 If you want to read non-character events, or ignore them, call
545 `read-event' or `read-char-exclusive' instead.
547 If the optional argument PROMPT is non-nil, display that as a prompt.
548 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
549 input method is turned on in the current buffer, that input method
550 is used for reading a character. */)
551 (prompt
, inherit_input_method
)
552 Lisp_Object prompt
, inherit_input_method
;
555 message_with_string ("%s", prompt
, 0);
556 return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method
));
559 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 2, 0,
560 doc
: /* Read an event object from the input stream.
561 If the optional argument PROMPT is non-nil, display that as a prompt.
562 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
563 input method is turned on in the current buffer, that input method
564 is used for reading a character. */)
565 (prompt
, inherit_input_method
)
566 Lisp_Object prompt
, inherit_input_method
;
569 message_with_string ("%s", prompt
, 0);
570 return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method
));
573 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 2, 0,
574 doc
: /* Read a character from the command input (keyboard or macro).
575 It is returned as a number. Non-character events are ignored.
577 If the optional argument PROMPT is non-nil, display that as a prompt.
578 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
579 input method is turned on in the current buffer, that input method
580 is used for reading a character. */)
581 (prompt
, inherit_input_method
)
582 Lisp_Object prompt
, inherit_input_method
;
585 message_with_string ("%s", prompt
, 0);
586 return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method
));
589 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
590 doc
: /* Don't use this yourself. */)
593 register Lisp_Object val
;
594 XSETINT (val
, getc (instream
));
600 /* Value is non-zero if the file asswociated with file descriptor FD
601 is a compiled Lisp file that's safe to load. Only files compiled
602 with Emacs are safe to load. Files compiled with XEmacs can lead
603 to a crash in Fbyte_code because of an incompatible change in the
614 /* Read the first few bytes from the file, and look for a line
615 specifying the byte compiler version used. */
616 nbytes
= emacs_read (fd
, buf
, sizeof buf
- 1);
621 /* Skip to the next newline, skipping over the initial `ELC'
622 with NUL bytes following it. */
623 for (i
= 0; i
< nbytes
&& buf
[i
] != '\n'; ++i
)
627 && fast_c_string_match_ignore_case (Vbytecomp_version_regexp
,
632 lseek (fd
, 0, SEEK_SET
);
637 /* Callback for record_unwind_protect. Restore the old load list OLD,
638 after loading a file successfully. */
641 record_load_unwind (old
)
644 return Vloads_in_progress
= old
;
647 /* This handler function is used via internal_condition_case_1. */
650 load_error_handler (data
)
656 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
657 doc
: /* Execute a file of Lisp code named FILE.
658 First try FILE with `.elc' appended, then try with `.el',
659 then try FILE unmodified (the exact suffixes are determined by
660 `load-suffixes'). Environment variable references in FILE
661 are replaced with their values by calling `substitute-in-file-name'.
662 This function searches the directories in `load-path'.
663 If optional second arg NOERROR is non-nil,
664 report no error if FILE doesn't exist.
665 Print messages at start and end of loading unless
666 optional third arg NOMESSAGE is non-nil.
667 If optional fourth arg NOSUFFIX is non-nil, don't try adding
668 suffixes `.elc' or `.el' to the specified name FILE.
669 If optional fifth arg MUST-SUFFIX is non-nil, insist on
670 the suffix `.elc' or `.el'; don't accept just FILE unless
671 it ends in one of those suffixes or includes a directory name.
673 Loading a file records its definitions, and its `provide' and
674 `require' calls, in an element of `load-history' whose
675 car is the file name loaded. See `load-history'.
677 Return t if file exists. */)
678 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
679 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
681 register FILE *stream
;
682 register int fd
= -1;
683 int count
= SPECPDL_INDEX ();
685 struct gcpro gcpro1
, gcpro2
;
686 Lisp_Object found
, efound
;
687 /* 1 means we printed the ".el is newer" message. */
689 /* 1 means we are loading a compiled file. */
700 /* If file name is magic, call the handler. */
701 /* This shouldn't be necessary any more now that `openp' handles it right.
702 handler = Ffind_file_name_handler (file, Qload);
704 return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
706 /* Do this after the handler to avoid
707 the need to gcpro noerror, nomessage and nosuffix.
708 (Below here, we care only whether they are nil or not.)
709 The presence of this call is the result of a historical accident:
710 it used to be in every file-operations and when it got removed
711 everywhere, it accidentally stayed here. Since then, enough people
712 supposedly have things like (load "$PROJECT/foo.el") in their .emacs
713 that it seemed risky to remove. */
714 if (! NILP (noerror
))
716 file
= internal_condition_case_1 (Fsubstitute_in_file_name
, file
,
717 Qt
, load_error_handler
);
722 file
= Fsubstitute_in_file_name (file
);
725 /* Avoid weird lossage with null string as arg,
726 since it would try to load a directory as a Lisp file */
727 if (SCHARS (file
) > 0)
729 int size
= SBYTES (file
);
733 GCPRO2 (file
, found
);
735 if (! NILP (must_suffix
))
737 /* Don't insist on adding a suffix if FILE already ends with one. */
739 && !strcmp (SDATA (file
) + size
- 3, ".el"))
742 && !strcmp (SDATA (file
) + size
- 4, ".elc"))
744 /* Don't insist on adding a suffix
745 if the argument includes a directory name. */
746 else if (! NILP (Ffile_name_directory (file
)))
750 fd
= openp (Vload_path
, file
,
751 (!NILP (nosuffix
) ? Qnil
752 : !NILP (must_suffix
) ? Vload_suffixes
753 : Fappend (2, (tmp
[0] = Vload_suffixes
,
754 tmp
[1] = default_suffixes
,
763 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
764 Fcons (file
, Qnil
)));
769 /* Tell startup.el whether or not we found the user's init file. */
770 if (EQ (Qt
, Vuser_init_file
))
771 Vuser_init_file
= found
;
773 /* If FD is -2, that means openp found a magic file. */
776 if (NILP (Fequal (found
, file
)))
777 /* If FOUND is a different file name from FILE,
778 find its handler even if we have already inhibited
779 the `load' operation on FILE. */
780 handler
= Ffind_file_name_handler (found
, Qt
);
782 handler
= Ffind_file_name_handler (found
, Qload
);
783 if (! NILP (handler
))
784 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
787 /* Check if we're stuck in a recursive load cycle.
789 2000-09-21: It's not possible to just check for the file loaded
790 being a member of Vloads_in_progress. This fails because of the
791 way the byte compiler currently works; `provide's are not
792 evaluted, see font-lock.el/jit-lock.el as an example. This
793 leads to a certain amount of ``normal'' recursion.
795 Also, just loading a file recursively is not always an error in
796 the general case; the second load may do something different. */
800 for (tem
= Vloads_in_progress
; CONSP (tem
); tem
= XCDR (tem
))
801 if (!NILP (Fequal (found
, XCAR (tem
))))
804 Fsignal (Qerror
, Fcons (build_string ("Recursive load"),
805 Fcons (found
, Vloads_in_progress
)));
806 record_unwind_protect (record_load_unwind
, Vloads_in_progress
);
807 Vloads_in_progress
= Fcons (found
, Vloads_in_progress
);
810 if (!bcmp (SDATA (found
) + SBYTES (found
) - 4,
812 /* Load .elc files directly, but not when they are
813 remote and have no handler! */
820 GCPRO2 (file
, found
);
822 if (!safe_to_load_p (fd
))
825 if (!load_dangerous_libraries
)
829 error ("File `%s' was not compiled in Emacs",
832 else if (!NILP (nomessage
))
833 message_with_string ("File `%s' not compiled in Emacs", found
, 1);
838 efound
= ENCODE_FILE (found
);
843 stat ((char *)SDATA (efound
), &s1
);
844 SSET (efound
, SBYTES (efound
) - 1, 0);
845 result
= stat ((char *)SDATA (efound
), &s2
);
846 SSET (efound
, SBYTES (efound
) - 1, 'c');
848 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
850 /* Make the progress messages mention that source is newer. */
853 /* If we won't print another message, mention this anyway. */
854 if (!NILP (nomessage
))
856 Lisp_Object msg_file
;
857 msg_file
= Fsubstring (found
, make_number (0), make_number (-1));
858 message_with_string ("Source file `%s' newer than byte-compiled file",
867 /* We are loading a source file (*.el). */
868 if (!NILP (Vload_source_file_function
))
874 val
= call4 (Vload_source_file_function
, found
, file
,
875 NILP (noerror
) ? Qnil
: Qt
,
876 NILP (nomessage
) ? Qnil
: Qt
);
877 return unbind_to (count
, val
);
881 GCPRO2 (file
, found
);
885 efound
= ENCODE_FILE (found
);
886 stream
= fopen ((char *) SDATA (efound
), fmode
);
887 #else /* not WINDOWSNT */
888 stream
= fdopen (fd
, fmode
);
889 #endif /* not WINDOWSNT */
893 error ("Failure to create stdio stream for %s", SDATA (file
));
896 if (! NILP (Vpurify_flag
))
897 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
899 if (NILP (nomessage
))
902 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...",
905 message_with_string ("Loading %s (source)...", file
, 1);
907 message_with_string ("Loading %s (compiled; note, source file is newer)...",
909 else /* The typical case; compiled file newer than source file. */
910 message_with_string ("Loading %s...", file
, 1);
913 record_unwind_protect (load_unwind
, make_save_value (stream
, 0));
914 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
915 specbind (Qload_file_name
, found
);
916 specbind (Qinhibit_file_name_operation
, Qnil
);
918 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
920 readevalloop (Qget_file_char
, stream
, (! NILP (Vpurify_flag
) ? file
: found
),
921 Feval
, 0, Qnil
, Qnil
, Qnil
, Qnil
);
922 unbind_to (count
, Qnil
);
924 /* Run any load-hooks for this file. */
925 temp
= Fassoc (file
, Vafter_load_alist
);
927 Fprogn (Fcdr (temp
));
930 if (saved_doc_string
)
931 free (saved_doc_string
);
932 saved_doc_string
= 0;
933 saved_doc_string_size
= 0;
935 if (prev_saved_doc_string
)
936 xfree (prev_saved_doc_string
);
937 prev_saved_doc_string
= 0;
938 prev_saved_doc_string_size
= 0;
940 if (!noninteractive
&& NILP (nomessage
))
943 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done",
946 message_with_string ("Loading %s (source)...done", file
, 1);
948 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
950 else /* The typical case; compiled file newer than source file. */
951 message_with_string ("Loading %s...done", file
, 1);
954 if (!NILP (Fequal (build_string ("obsolete"),
955 Ffile_name_nondirectory
956 (Fdirectory_file_name (Ffile_name_directory (found
))))))
957 message_with_string ("Package %s is obsolete", file
, 1);
963 load_unwind (arg
) /* used as unwind-protect function in load */
966 FILE *stream
= (FILE *) XSAVE_VALUE (arg
)->pointer
;
969 if (--load_in_progress
< 0) load_in_progress
= 0;
974 load_descriptor_unwind (oldlist
)
977 load_descriptor_list
= oldlist
;
981 /* Close all descriptors in use for Floads.
982 This is used when starting a subprocess. */
989 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCDR (tail
))
990 emacs_close (XFASTINT (XCAR (tail
)));
995 complete_filename_p (pathname
)
996 Lisp_Object pathname
;
998 register const unsigned char *s
= SDATA (pathname
);
999 return (IS_DIRECTORY_SEP (s
[0])
1000 || (SCHARS (pathname
) > 2
1001 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
1011 DEFUN ("locate-file-internal", Flocate_file_internal
, Slocate_file_internal
, 2, 4, 0,
1012 doc
: /* Search for FILENAME through PATH.
1013 Returns the file's name in absolute form, or nil if not found.
1014 If SUFFIXES is non-nil, it should be a list of suffixes to append to
1015 file name when searching.
1016 If non-nil, PREDICATE is used instead of `file-readable-p'.
1017 PREDICATE can also be an integer to pass to the access(2) function,
1018 in which case file-name-handlers are ignored. */)
1019 (filename
, path
, suffixes
, predicate
)
1020 Lisp_Object filename
, path
, suffixes
, predicate
;
1023 int fd
= openp (path
, filename
, suffixes
, &file
, predicate
);
1024 if (NILP (predicate
) && fd
> 0)
1030 /* Search for a file whose name is STR, looking in directories
1031 in the Lisp list PATH, and trying suffixes from SUFFIX.
1032 On success, returns a file descriptor. On failure, returns -1.
1034 SUFFIXES is a list of strings containing possible suffixes.
1035 The empty suffix is automatically added iff the list is empty.
1037 PREDICATE non-nil means don't open the files,
1038 just look for one that satisfies the predicate. In this case,
1039 returns 1 on success. The predicate can be a lisp function or
1040 an integer to pass to `access' (in which case file-name-handlers
1043 If STOREPTR is nonzero, it points to a slot where the name of
1044 the file actually found should be stored as a Lisp string.
1045 nil is stored there on failure.
1047 If the file we find is remote, return -2
1048 but store the found remote file name in *STOREPTR. */
1051 openp (path
, str
, suffixes
, storeptr
, predicate
)
1052 Lisp_Object path
, str
;
1053 Lisp_Object suffixes
;
1054 Lisp_Object
*storeptr
;
1055 Lisp_Object predicate
;
1060 register char *fn
= buf
;
1063 Lisp_Object filename
;
1065 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
, gcpro6
;
1066 Lisp_Object string
, tail
, encoded_fn
;
1067 int max_suffix_len
= 0;
1071 for (tail
= suffixes
; CONSP (tail
); tail
= XCDR (tail
))
1073 CHECK_STRING_CAR (tail
);
1074 max_suffix_len
= max (max_suffix_len
,
1075 SBYTES (XCAR (tail
)));
1078 string
= filename
= Qnil
;
1079 GCPRO6 (str
, string
, filename
, path
, suffixes
, encoded_fn
);
1084 if (complete_filename_p (str
))
1087 for (; CONSP (path
); path
= XCDR (path
))
1089 filename
= Fexpand_file_name (str
, XCAR (path
));
1090 if (!complete_filename_p (filename
))
1091 /* If there are non-absolute elts in PATH (eg ".") */
1092 /* Of course, this could conceivably lose if luser sets
1093 default-directory to be something non-absolute... */
1095 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
1096 if (!complete_filename_p (filename
))
1097 /* Give up on this path element! */
1101 /* Calculate maximum size of any filename made from
1102 this path element/specified file name and any possible suffix. */
1103 want_size
= max_suffix_len
+ SBYTES (filename
) + 1;
1104 if (fn_size
< want_size
)
1105 fn
= (char *) alloca (fn_size
= 100 + want_size
);
1107 /* Loop over suffixes. */
1108 for (tail
= NILP (suffixes
) ? default_suffixes
: suffixes
;
1109 CONSP (tail
); tail
= XCDR (tail
))
1111 int lsuffix
= SBYTES (XCAR (tail
));
1112 Lisp_Object handler
;
1115 /* Concatenate path element/specified name with the suffix.
1116 If the directory starts with /:, remove that. */
1117 if (SCHARS (filename
) > 2
1118 && SREF (filename
, 0) == '/'
1119 && SREF (filename
, 1) == ':')
1121 strncpy (fn
, SDATA (filename
) + 2,
1122 SBYTES (filename
) - 2);
1123 fn
[SBYTES (filename
) - 2] = 0;
1127 strncpy (fn
, SDATA (filename
),
1129 fn
[SBYTES (filename
)] = 0;
1132 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
1133 strncat (fn
, SDATA (XCAR (tail
)), lsuffix
);
1135 /* Check that the file exists and is not a directory. */
1136 /* We used to only check for handlers on non-absolute file names:
1140 handler = Ffind_file_name_handler (filename, Qfile_exists_p);
1141 It's not clear why that was the case and it breaks things like
1142 (load "/bar.el") where the file is actually "/bar.el.gz". */
1143 string
= build_string (fn
);
1144 handler
= Ffind_file_name_handler (string
, Qfile_exists_p
);
1145 if ((!NILP (handler
) || !NILP (predicate
)) && !NATNUMP (predicate
))
1147 if (NILP (predicate
))
1148 exists
= !NILP (Ffile_readable_p (string
));
1150 exists
= !NILP (call1 (predicate
, string
));
1151 if (exists
&& !NILP (Ffile_directory_p (string
)))
1156 /* We succeeded; return this descriptor and filename. */
1167 encoded_fn
= ENCODE_FILE (string
);
1168 pfn
= SDATA (encoded_fn
);
1169 exists
= (stat (pfn
, &st
) >= 0
1170 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
1173 /* Check that we can access or open it. */
1174 if (NATNUMP (predicate
))
1175 fd
= (access (pfn
, XFASTINT (predicate
)) == 0) ? 1 : -1;
1177 fd
= emacs_open (pfn
, O_RDONLY
, 0);
1181 /* We succeeded; return this descriptor and filename. */
1199 /* Merge the list we've accumulated of globals from the current input source
1200 into the load_history variable. The details depend on whether
1201 the source has an associated file name or not.
1203 FILENAME is the file name that we are loading from.
1204 ENTIRE is 1 if loading that entire file, 0 if evaluating part of it. */
1207 build_load_history (filename
, entire
)
1208 Lisp_Object filename
;
1211 register Lisp_Object tail
, prev
, newelt
;
1212 register Lisp_Object tem
, tem2
;
1213 register int foundit
= 0;
1215 tail
= Vload_history
;
1218 while (CONSP (tail
))
1222 /* Find the feature's previous assoc list... */
1223 if (!NILP (Fequal (filename
, Fcar (tem
))))
1227 /* If we're loading the entire file, remove old data. */
1231 Vload_history
= XCDR (tail
);
1233 Fsetcdr (prev
, XCDR (tail
));
1236 /* Otherwise, cons on new symbols that are not already members. */
1239 tem2
= Vcurrent_load_list
;
1241 while (CONSP (tem2
))
1243 newelt
= XCAR (tem2
);
1245 if (NILP (Fmember (newelt
, tem
)))
1246 Fsetcar (tail
, Fcons (XCAR (tem
),
1247 Fcons (newelt
, XCDR (tem
))));
1260 /* If we're loading an entire file, cons the new assoc onto the
1261 front of load-history, the most-recently-loaded position. Also
1262 do this if we didn't find an existing member for the file. */
1263 if (entire
|| !foundit
)
1264 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1269 unreadpure (junk
) /* Used as unwind-protect function in readevalloop */
1277 readevalloop_1 (old
)
1280 load_convert_to_unibyte
= ! NILP (old
);
1284 /* Signal an `end-of-file' error, if possible with file name
1288 end_of_file_error ()
1292 if (STRINGP (Vload_file_name
))
1293 data
= Fcons (Vload_file_name
, Qnil
);
1297 Fsignal (Qend_of_file
, data
);
1300 /* UNIBYTE specifies how to set load_convert_to_unibyte
1301 for this invocation.
1302 READFUN, if non-nil, is used instead of `read'.
1303 START, END is region in current buffer (from eval-region). */
1306 readevalloop (readcharfun
, stream
, sourcename
, evalfun
,
1307 printflag
, unibyte
, readfun
, start
, end
)
1308 Lisp_Object readcharfun
;
1310 Lisp_Object sourcename
;
1311 Lisp_Object (*evalfun
) ();
1313 Lisp_Object unibyte
, readfun
;
1314 Lisp_Object start
, end
;
1317 register Lisp_Object val
;
1318 int count
= SPECPDL_INDEX ();
1319 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1320 struct buffer
*b
= 0;
1321 int continue_reading_p
;
1323 if (BUFFERP (readcharfun
))
1324 b
= XBUFFER (readcharfun
);
1325 else if (MARKERP (readcharfun
))
1326 b
= XMARKER (readcharfun
)->buffer
;
1328 specbind (Qstandard_input
, readcharfun
); /* GCPROs readcharfun. */
1329 specbind (Qcurrent_load_list
, Qnil
);
1330 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1331 load_convert_to_unibyte
= !NILP (unibyte
);
1333 readchar_backlog
= -1;
1335 GCPRO4 (sourcename
, readfun
, start
, end
);
1337 LOADHIST_ATTACH (sourcename
);
1339 continue_reading_p
= 1;
1340 while (continue_reading_p
)
1342 int count1
= SPECPDL_INDEX ();
1344 if (b
!= 0 && NILP (b
->name
))
1345 error ("Reading from killed buffer");
1349 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1350 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1352 Fnarrow_to_region (make_number (BEGV
), end
);
1360 while ((c
= READCHAR
) != '\n' && c
!= -1);
1365 unbind_to (count1
, Qnil
);
1369 /* Ignore whitespace here, so we can detect eof. */
1370 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
1373 if (!NILP (Vpurify_flag
) && c
== '(')
1375 record_unwind_protect (unreadpure
, Qnil
);
1376 val
= read_list (-1, readcharfun
);
1381 read_objects
= Qnil
;
1382 if (!NILP (readfun
))
1384 val
= call1 (readfun
, readcharfun
);
1386 /* If READCHARFUN has set point to ZV, we should
1387 stop reading, even if the form read sets point
1388 to a different value when evaluated. */
1389 if (BUFFERP (readcharfun
))
1391 struct buffer
*b
= XBUFFER (readcharfun
);
1392 if (BUF_PT (b
) == BUF_ZV (b
))
1393 continue_reading_p
= 0;
1396 else if (! NILP (Vload_read_function
))
1397 val
= call1 (Vload_read_function
, readcharfun
);
1399 val
= read_internal_start (readcharfun
, Qnil
, Qnil
);
1402 if (!NILP (start
) && continue_reading_p
)
1403 start
= Fpoint_marker ();
1404 unbind_to (count1
, Qnil
);
1406 val
= (*evalfun
) (val
);
1410 Vvalues
= Fcons (val
, Vvalues
);
1411 if (EQ (Vstandard_output
, Qt
))
1418 build_load_history (sourcename
,
1419 stream
|| (INTEGERP (start
) && INTEGERP (end
)
1420 && XINT (start
) == BEG
&& XINT (end
) == Z
));
1424 unbind_to (count
, Qnil
);
1427 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 5, "",
1428 doc
: /* Execute the current buffer as Lisp code.
1429 Programs can pass two arguments, BUFFER and PRINTFLAG.
1430 BUFFER is the buffer to evaluate (nil means use current buffer).
1431 PRINTFLAG controls printing of output:
1432 nil means discard it; anything else is stream for print.
1434 If the optional third argument FILENAME is non-nil,
1435 it specifies the file name to use for `load-history'.
1436 The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'
1437 for this invocation.
1439 The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that
1440 `print' and related functions should work normally even if PRINTFLAG is nil.
1442 This function preserves the position of point. */)
1443 (buffer
, printflag
, filename
, unibyte
, do_allow_print
)
1444 Lisp_Object buffer
, printflag
, filename
, unibyte
, do_allow_print
;
1446 int count
= SPECPDL_INDEX ();
1447 Lisp_Object tem
, buf
;
1450 buf
= Fcurrent_buffer ();
1452 buf
= Fget_buffer (buffer
);
1454 error ("No such buffer");
1456 if (NILP (printflag
) && NILP (do_allow_print
))
1461 if (NILP (filename
))
1462 filename
= XBUFFER (buf
)->filename
;
1464 specbind (Qeval_buffer_list
, Fcons (buf
, Veval_buffer_list
));
1465 specbind (Qstandard_output
, tem
);
1466 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1467 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1468 readevalloop (buf
, 0, filename
, Feval
,
1469 !NILP (printflag
), unibyte
, Qnil
, Qnil
, Qnil
);
1470 unbind_to (count
, Qnil
);
1475 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1476 doc
: /* Execute the region as Lisp code.
1477 When called from programs, expects two arguments,
1478 giving starting and ending indices in the current buffer
1479 of the text to be executed.
1480 Programs can pass third argument PRINTFLAG which controls output:
1481 nil means discard it; anything else is stream for printing it.
1482 Also the fourth argument READ-FUNCTION, if non-nil, is used
1483 instead of `read' to read each expression. It gets one argument
1484 which is the input stream for reading characters.
1486 This function does not move point. */)
1487 (start
, end
, printflag
, read_function
)
1488 Lisp_Object start
, end
, printflag
, read_function
;
1490 int count
= SPECPDL_INDEX ();
1491 Lisp_Object tem
, cbuf
;
1493 cbuf
= Fcurrent_buffer ();
1495 if (NILP (printflag
))
1499 specbind (Qstandard_output
, tem
);
1500 specbind (Qeval_buffer_list
, Fcons (cbuf
, Veval_buffer_list
));
1502 /* readevalloop calls functions which check the type of start and end. */
1503 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1504 !NILP (printflag
), Qnil
, read_function
,
1507 return unbind_to (count
, Qnil
);
1511 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1512 doc
: /* Read one Lisp expression as text from STREAM, return as Lisp object.
1513 If STREAM is nil, use the value of `standard-input' (which see).
1514 STREAM or the value of `standard-input' may be:
1515 a buffer (read from point and advance it)
1516 a marker (read from where it points and advance it)
1517 a function (call it with no arguments for each character,
1518 call it with a char as argument to push a char back)
1519 a string (takes text from string, starting at the beginning)
1520 t (read text line using minibuffer and use it, or read from
1521 standard input in batch mode). */)
1526 stream
= Vstandard_input
;
1527 if (EQ (stream
, Qt
))
1528 stream
= Qread_char
;
1529 if (EQ (stream
, Qread_char
))
1530 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1532 return read_internal_start (stream
, Qnil
, Qnil
);
1535 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1536 doc
: /* Read one Lisp expression which is represented as text by STRING.
1537 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
1538 START and END optionally delimit a substring of STRING from which to read;
1539 they default to 0 and (length STRING) respectively. */)
1540 (string
, start
, end
)
1541 Lisp_Object string
, start
, end
;
1544 CHECK_STRING (string
);
1545 /* read_internal_start sets read_from_string_index. */
1546 ret
= read_internal_start (string
, start
, end
);
1547 return Fcons (ret
, make_number (read_from_string_index
));
1550 /* Function to set up the global context we need in toplevel read
1553 read_internal_start (stream
, start
, end
)
1555 Lisp_Object start
; /* Only used when stream is a string. */
1556 Lisp_Object end
; /* Only used when stream is a string. */
1560 readchar_backlog
= -1;
1562 new_backquote_flag
= 0;
1563 read_objects
= Qnil
;
1564 if (EQ (Vread_with_symbol_positions
, Qt
)
1565 || EQ (Vread_with_symbol_positions
, stream
))
1566 Vread_symbol_positions_list
= Qnil
;
1568 if (STRINGP (stream
))
1570 int startval
, endval
;
1572 endval
= SCHARS (stream
);
1576 endval
= XINT (end
);
1577 if (endval
< 0 || endval
> SCHARS (stream
))
1578 args_out_of_range (stream
, end
);
1585 CHECK_NUMBER (start
);
1586 startval
= XINT (start
);
1587 if (startval
< 0 || startval
> endval
)
1588 args_out_of_range (stream
, start
);
1590 read_from_string_index
= startval
;
1591 read_from_string_index_byte
= string_char_to_byte (stream
, startval
);
1592 read_from_string_limit
= endval
;
1595 retval
= read0 (stream
);
1596 if (EQ (Vread_with_symbol_positions
, Qt
)
1597 || EQ (Vread_with_symbol_positions
, stream
))
1598 Vread_symbol_positions_list
= Fnreverse (Vread_symbol_positions_list
);
1602 /* Use this for recursive reads, in contexts where internal tokens
1607 Lisp_Object readcharfun
;
1609 register Lisp_Object val
;
1612 val
= read1 (readcharfun
, &c
, 0);
1614 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1621 static int read_buffer_size
;
1622 static char *read_buffer
;
1624 /* Read multibyte form and return it as a character. C is a first
1625 byte of multibyte form, and rest of them are read from
1629 read_multibyte (c
, readcharfun
)
1631 Lisp_Object readcharfun
;
1633 /* We need the actual character code of this multibyte
1635 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1643 while ((c
= READCHAR
) >= 0xA0
1644 && len
< MAX_MULTIBYTE_LENGTH
)
1650 if (UNIBYTE_STR_AS_MULTIBYTE_P (str
, len
, bytes
))
1651 return STRING_CHAR (str
, len
);
1652 /* The byte sequence is not valid as multibyte. Unread all bytes
1653 but the first one, and return the first byte. */
1659 /* Read a \-escape sequence, assuming we already read the `\'.
1660 If the escape sequence forces unibyte, store 1 into *BYTEREP.
1661 If the escape sequence forces multibyte, store 2 into *BYTEREP.
1662 Otherwise store 0 into *BYTEREP. */
1665 read_escape (readcharfun
, stringp
, byterep
)
1666 Lisp_Object readcharfun
;
1670 register int c
= READCHAR
;
1677 end_of_file_error ();
1707 error ("Invalid escape character syntax");
1710 c
= read_escape (readcharfun
, 0, byterep
);
1711 return c
| meta_modifier
;
1716 error ("Invalid escape character syntax");
1719 c
= read_escape (readcharfun
, 0, byterep
);
1720 return c
| shift_modifier
;
1725 error ("Invalid escape character syntax");
1728 c
= read_escape (readcharfun
, 0, byterep
);
1729 return c
| hyper_modifier
;
1734 error ("Invalid escape character syntax");
1737 c
= read_escape (readcharfun
, 0, byterep
);
1738 return c
| alt_modifier
;
1749 c
= read_escape (readcharfun
, 0, byterep
);
1750 return c
| super_modifier
;
1755 error ("Invalid escape character syntax");
1759 c
= read_escape (readcharfun
, 0, byterep
);
1760 if ((c
& ~CHAR_MODIFIER_MASK
) == '?')
1761 return 0177 | (c
& CHAR_MODIFIER_MASK
);
1762 else if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
1763 return c
| ctrl_modifier
;
1764 /* ASCII control chars are made from letters (both cases),
1765 as well as the non-letters within 0100...0137. */
1766 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1767 return (c
& (037 | ~0177));
1768 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1769 return (c
& (037 | ~0177));
1771 return c
| ctrl_modifier
;
1781 /* An octal escape, as in ANSI C. */
1783 register int i
= c
- '0';
1784 register int count
= 0;
1787 if ((c
= READCHAR
) >= '0' && c
<= '7')
1804 /* A hex escape, as in ANSI C. */
1810 if (c
>= '0' && c
<= '9')
1815 else if ((c
>= 'a' && c
<= 'f')
1816 || (c
>= 'A' && c
<= 'F'))
1819 if (c
>= 'a' && c
<= 'f')
1836 if (BASE_LEADING_CODE_P (c
))
1837 c
= read_multibyte (c
, readcharfun
);
1843 /* Read an integer in radix RADIX using READCHARFUN to read
1844 characters. RADIX must be in the interval [2..36]; if it isn't, a
1845 read error is signaled . Value is the integer read. Signals an
1846 error if encountering invalid read syntax or if RADIX is out of
1850 read_integer (readcharfun
, radix
)
1851 Lisp_Object readcharfun
;
1854 int ndigits
= 0, invalid_p
, c
, sign
= 0;
1855 EMACS_INT number
= 0;
1857 if (radix
< 2 || radix
> 36)
1861 number
= ndigits
= invalid_p
= 0;
1877 if (c
>= '0' && c
<= '9')
1879 else if (c
>= 'a' && c
<= 'z')
1880 digit
= c
- 'a' + 10;
1881 else if (c
>= 'A' && c
<= 'Z')
1882 digit
= c
- 'A' + 10;
1889 if (digit
< 0 || digit
>= radix
)
1892 number
= radix
* number
+ digit
;
1898 if (ndigits
== 0 || invalid_p
)
1901 sprintf (buf
, "integer, radix %d", radix
);
1902 Fsignal (Qinvalid_read_syntax
, Fcons (build_string (buf
), Qnil
));
1905 return make_number (sign
* number
);
1909 /* Convert unibyte text in read_buffer to multibyte.
1911 Initially, *P is a pointer after the end of the unibyte text, and
1912 the pointer *END points after the end of read_buffer.
1914 If read_buffer doesn't have enough room to hold the result
1915 of the conversion, reallocate it and adjust *P and *END.
1917 At the end, make *P point after the result of the conversion, and
1918 return in *NCHARS the number of characters in the converted
1922 to_multibyte (p
, end
, nchars
)
1928 parse_str_as_multibyte (read_buffer
, *p
- read_buffer
, &nbytes
, nchars
);
1929 if (read_buffer_size
< 2 * nbytes
)
1931 int offset
= *p
- read_buffer
;
1932 read_buffer_size
= 2 * max (read_buffer_size
, nbytes
);
1933 read_buffer
= (char *) xrealloc (read_buffer
, read_buffer_size
);
1934 *p
= read_buffer
+ offset
;
1935 *end
= read_buffer
+ read_buffer_size
;
1938 if (nbytes
!= *nchars
)
1939 nbytes
= str_as_multibyte (read_buffer
, read_buffer_size
,
1940 *p
- read_buffer
, nchars
);
1942 *p
= read_buffer
+ nbytes
;
1946 /* If the next token is ')' or ']' or '.', we store that character
1947 in *PCH and the return value is not interesting. Else, we store
1948 zero in *PCH and we read and return one lisp object.
1950 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1953 read1 (readcharfun
, pch
, first_in_list
)
1954 register Lisp_Object readcharfun
;
1959 int uninterned_symbol
= 0;
1967 end_of_file_error ();
1972 return read_list (0, readcharfun
);
1975 return read_vector (readcharfun
, 0);
1992 tmp
= read_vector (readcharfun
, 0);
1993 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1994 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1995 error ("Invalid size char-table");
1996 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1997 XCHAR_TABLE (tmp
)->top
= Qt
;
2006 tmp
= read_vector (readcharfun
, 0);
2007 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
2008 error ("Invalid size char-table");
2009 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
2010 XCHAR_TABLE (tmp
)->top
= Qnil
;
2013 Fsignal (Qinvalid_read_syntax
,
2014 Fcons (make_string ("#^^", 3), Qnil
));
2016 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
2021 length
= read1 (readcharfun
, pch
, first_in_list
);
2025 Lisp_Object tmp
, val
;
2027 = ((XFASTINT (length
) + BOOL_VECTOR_BITS_PER_CHAR
- 1)
2028 / BOOL_VECTOR_BITS_PER_CHAR
);
2031 tmp
= read1 (readcharfun
, pch
, first_in_list
);
2032 if (size_in_chars
!= SCHARS (tmp
)
2033 /* We used to print 1 char too many
2034 when the number of bits was a multiple of 8.
2035 Accept such input in case it came from an old version. */
2036 && ! (XFASTINT (length
)
2037 == (SCHARS (tmp
) - 1) * BOOL_VECTOR_BITS_PER_CHAR
))
2038 Fsignal (Qinvalid_read_syntax
,
2039 Fcons (make_string ("#&...", 5), Qnil
));
2041 val
= Fmake_bool_vector (length
, Qnil
);
2042 bcopy (SDATA (tmp
), XBOOL_VECTOR (val
)->data
,
2044 /* Clear the extraneous bits in the last byte. */
2045 if (XINT (length
) != size_in_chars
* BOOL_VECTOR_BITS_PER_CHAR
)
2046 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
2047 &= (1 << (XINT (length
) % BOOL_VECTOR_BITS_PER_CHAR
)) - 1;
2050 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
2055 /* Accept compiled functions at read-time so that we don't have to
2056 build them using function calls. */
2058 tmp
= read_vector (readcharfun
, 1);
2059 return Fmake_byte_code (XVECTOR (tmp
)->size
,
2060 XVECTOR (tmp
)->contents
);
2065 struct gcpro gcpro1
;
2068 /* Read the string itself. */
2069 tmp
= read1 (readcharfun
, &ch
, 0);
2070 if (ch
!= 0 || !STRINGP (tmp
))
2071 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2073 /* Read the intervals and their properties. */
2076 Lisp_Object beg
, end
, plist
;
2078 beg
= read1 (readcharfun
, &ch
, 0);
2083 end
= read1 (readcharfun
, &ch
, 0);
2085 plist
= read1 (readcharfun
, &ch
, 0);
2087 Fsignal (Qinvalid_read_syntax
,
2088 Fcons (build_string ("invalid string property list"),
2090 Fset_text_properties (beg
, end
, plist
, tmp
);
2096 /* #@NUMBER is used to skip NUMBER following characters.
2097 That's used in .elc files to skip over doc strings
2098 and function definitions. */
2103 /* Read a decimal integer. */
2104 while ((c
= READCHAR
) >= 0
2105 && c
>= '0' && c
<= '9')
2113 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
2115 /* If we are supposed to force doc strings into core right now,
2116 record the last string that we skipped,
2117 and record where in the file it comes from. */
2119 /* But first exchange saved_doc_string
2120 with prev_saved_doc_string, so we save two strings. */
2122 char *temp
= saved_doc_string
;
2123 int temp_size
= saved_doc_string_size
;
2124 file_offset temp_pos
= saved_doc_string_position
;
2125 int temp_len
= saved_doc_string_length
;
2127 saved_doc_string
= prev_saved_doc_string
;
2128 saved_doc_string_size
= prev_saved_doc_string_size
;
2129 saved_doc_string_position
= prev_saved_doc_string_position
;
2130 saved_doc_string_length
= prev_saved_doc_string_length
;
2132 prev_saved_doc_string
= temp
;
2133 prev_saved_doc_string_size
= temp_size
;
2134 prev_saved_doc_string_position
= temp_pos
;
2135 prev_saved_doc_string_length
= temp_len
;
2138 if (saved_doc_string_size
== 0)
2140 saved_doc_string_size
= nskip
+ 100;
2141 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
2143 if (nskip
> saved_doc_string_size
)
2145 saved_doc_string_size
= nskip
+ 100;
2146 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
2147 saved_doc_string_size
);
2150 saved_doc_string_position
= file_tell (instream
);
2152 /* Copy that many characters into saved_doc_string. */
2153 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2154 saved_doc_string
[i
] = c
= READCHAR
;
2156 saved_doc_string_length
= i
;
2160 /* Skip that many characters. */
2161 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2169 /* #! appears at the beginning of an executable file.
2170 Skip the first line. */
2171 while (c
!= '\n' && c
>= 0)
2176 return Vload_file_name
;
2178 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
2179 /* #:foo is the uninterned symbol named foo. */
2182 uninterned_symbol
= 1;
2186 /* Reader forms that can reuse previously read objects. */
2187 if (c
>= '0' && c
<= '9')
2192 /* Read a non-negative integer. */
2193 while (c
>= '0' && c
<= '9')
2199 /* #n=object returns object, but associates it with n for #n#. */
2202 /* Make a placeholder for #n# to use temporarily */
2203 Lisp_Object placeholder
;
2206 placeholder
= Fcons(Qnil
, Qnil
);
2207 cell
= Fcons (make_number (n
), placeholder
);
2208 read_objects
= Fcons (cell
, read_objects
);
2210 /* Read the object itself. */
2211 tem
= read0 (readcharfun
);
2213 /* Now put it everywhere the placeholder was... */
2214 substitute_object_in_subtree (tem
, placeholder
);
2216 /* ...and #n# will use the real value from now on. */
2217 Fsetcdr (cell
, tem
);
2221 /* #n# returns a previously read object. */
2224 tem
= Fassq (make_number (n
), read_objects
);
2227 /* Fall through to error message. */
2229 else if (c
== 'r' || c
== 'R')
2230 return read_integer (readcharfun
, n
);
2232 /* Fall through to error message. */
2234 else if (c
== 'x' || c
== 'X')
2235 return read_integer (readcharfun
, 16);
2236 else if (c
== 'o' || c
== 'O')
2237 return read_integer (readcharfun
, 8);
2238 else if (c
== 'b' || c
== 'B')
2239 return read_integer (readcharfun
, 2);
2242 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2245 while ((c
= READCHAR
) >= 0 && c
!= '\n');
2250 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
2260 new_backquote_flag
++;
2261 value
= read0 (readcharfun
);
2262 new_backquote_flag
--;
2264 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
2268 if (new_backquote_flag
)
2270 Lisp_Object comma_type
= Qnil
;
2275 comma_type
= Qcomma_at
;
2277 comma_type
= Qcomma_dot
;
2280 if (ch
>= 0) UNREAD (ch
);
2281 comma_type
= Qcomma
;
2284 new_backquote_flag
--;
2285 value
= read0 (readcharfun
);
2286 new_backquote_flag
++;
2287 return Fcons (comma_type
, Fcons (value
, Qnil
));
2300 end_of_file_error ();
2302 /* Accept `single space' syntax like (list ? x) where the
2303 whitespace character is SPC or TAB.
2304 Other literal whitespace like NL, CR, and FF are not accepted,
2305 as there are well-established escape sequences for these. */
2306 if (c
== ' ' || c
== '\t')
2307 return make_number (c
);
2310 c
= read_escape (readcharfun
, 0, &discard
);
2311 else if (BASE_LEADING_CODE_P (c
))
2312 c
= read_multibyte (c
, readcharfun
);
2314 next_char
= READCHAR
;
2315 if (next_char
== '.')
2317 /* Only a dotted-pair dot is valid after a char constant. */
2318 int next_next_char
= READCHAR
;
2319 UNREAD (next_next_char
);
2321 ok
= (next_next_char
<= 040
2322 || (next_next_char
< 0200
2323 && (index ("\"';([#?", next_next_char
)
2324 || (!first_in_list
&& next_next_char
== '`')
2325 || (new_backquote_flag
&& next_next_char
== ','))));
2329 ok
= (next_char
<= 040
2330 || (next_char
< 0200
2331 && (index ("\"';()[]#?", next_char
)
2332 || (!first_in_list
&& next_char
== '`')
2333 || (new_backquote_flag
&& next_char
== ','))));
2337 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("?", 1), Qnil
));
2339 return make_number (c
);
2344 char *p
= read_buffer
;
2345 char *end
= read_buffer
+ read_buffer_size
;
2347 /* 1 if we saw an escape sequence specifying
2348 a multibyte character, or a multibyte character. */
2349 int force_multibyte
= 0;
2350 /* 1 if we saw an escape sequence specifying
2351 a single-byte character. */
2352 int force_singlebyte
= 0;
2353 /* 1 if read_buffer contains multibyte text now. */
2354 int is_multibyte
= 0;
2358 while ((c
= READCHAR
) >= 0
2361 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2363 int offset
= p
- read_buffer
;
2364 read_buffer
= (char *) xrealloc (read_buffer
,
2365 read_buffer_size
*= 2);
2366 p
= read_buffer
+ offset
;
2367 end
= read_buffer
+ read_buffer_size
;
2374 c
= read_escape (readcharfun
, 1, &byterep
);
2376 /* C is -1 if \ newline has just been seen */
2379 if (p
== read_buffer
)
2385 force_singlebyte
= 1;
2386 else if (byterep
== 2)
2387 force_multibyte
= 1;
2390 /* A character that must be multibyte forces multibyte. */
2391 if (! SINGLE_BYTE_CHAR_P (c
& ~CHAR_MODIFIER_MASK
))
2392 force_multibyte
= 1;
2394 /* If we just discovered the need to be multibyte,
2395 convert the text accumulated thus far. */
2396 if (force_multibyte
&& ! is_multibyte
)
2399 to_multibyte (&p
, &end
, &nchars
);
2402 /* Allow `\C- ' and `\C-?'. */
2403 if (c
== (CHAR_CTL
| ' '))
2405 else if (c
== (CHAR_CTL
| '?'))
2410 /* Shift modifier is valid only with [A-Za-z]. */
2411 if ((c
& 0377) >= 'A' && (c
& 0377) <= 'Z')
2413 else if ((c
& 0377) >= 'a' && (c
& 0377) <= 'z')
2414 c
= (c
& ~CHAR_SHIFT
) - ('a' - 'A');
2418 /* Move the meta bit to the right place for a string. */
2419 c
= (c
& ~CHAR_META
) | 0x80;
2420 if (c
& CHAR_MODIFIER_MASK
)
2421 error ("Invalid modifier in string");
2424 p
+= CHAR_STRING (c
, p
);
2432 end_of_file_error ();
2434 /* If purifying, and string starts with \ newline,
2435 return zero instead. This is for doc strings
2436 that we are really going to find in etc/DOC.nn.nn */
2437 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
2438 return make_number (0);
2440 if (is_multibyte
|| force_singlebyte
)
2442 else if (load_convert_to_unibyte
)
2445 to_multibyte (&p
, &end
, &nchars
);
2446 if (p
- read_buffer
!= nchars
)
2448 string
= make_multibyte_string (read_buffer
, nchars
,
2450 return Fstring_make_unibyte (string
);
2452 /* We can make a unibyte string directly. */
2455 else if (EQ (readcharfun
, Qget_file_char
)
2456 || EQ (readcharfun
, Qlambda
))
2458 /* Nowadays, reading directly from a file is used only for
2459 compiled Emacs Lisp files, and those always use the
2460 Emacs internal encoding. Meanwhile, Qlambda is used
2461 for reading dynamic byte code (compiled with
2462 byte-compile-dynamic = t). So make the string multibyte
2463 if the string contains any multibyte sequences.
2464 (to_multibyte is a no-op if not.) */
2465 to_multibyte (&p
, &end
, &nchars
);
2466 is_multibyte
= (p
- read_buffer
) != nchars
;
2469 /* In all other cases, if we read these bytes as
2470 separate characters, treat them as separate characters now. */
2473 /* We want readchar_count to be the number of characters, not
2474 bytes. Hence we adjust for multibyte characters in the
2475 string. ... But it doesn't seem to be necessary, because
2476 READCHAR *does* read multibyte characters from buffers. */
2477 /* readchar_count -= (p - read_buffer) - nchars; */
2479 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
2481 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2487 int next_char
= READCHAR
;
2490 if (next_char
<= 040
2491 || (next_char
< 0200
2492 && (index ("\"';([#?", next_char
)
2493 || (!first_in_list
&& next_char
== '`')
2494 || (new_backquote_flag
&& next_char
== ','))))
2500 /* Otherwise, we fall through! Note that the atom-reading loop
2501 below will now loop at least once, assuring that we will not
2502 try to UNREAD two characters in a row. */
2506 if (c
<= 040) goto retry
;
2508 char *p
= read_buffer
;
2512 char *end
= read_buffer
+ read_buffer_size
;
2516 || (!index ("\"';()[]#", c
)
2517 && !(!first_in_list
&& c
== '`')
2518 && !(new_backquote_flag
&& c
== ','))))
2520 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2522 int offset
= p
- read_buffer
;
2523 read_buffer
= (char *) xrealloc (read_buffer
,
2524 read_buffer_size
*= 2);
2525 p
= read_buffer
+ offset
;
2526 end
= read_buffer
+ read_buffer_size
;
2533 end_of_file_error ();
2537 if (! SINGLE_BYTE_CHAR_P (c
))
2538 p
+= CHAR_STRING (c
, p
);
2547 int offset
= p
- read_buffer
;
2548 read_buffer
= (char *) xrealloc (read_buffer
,
2549 read_buffer_size
*= 2);
2550 p
= read_buffer
+ offset
;
2551 end
= read_buffer
+ read_buffer_size
;
2558 if (!quoted
&& !uninterned_symbol
)
2561 register Lisp_Object val
;
2563 if (*p1
== '+' || *p1
== '-') p1
++;
2564 /* Is it an integer? */
2567 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2568 /* Integers can have trailing decimal points. */
2569 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2571 /* It is an integer. */
2575 if (sizeof (int) == sizeof (EMACS_INT
))
2576 XSETINT (val
, atoi (read_buffer
));
2577 else if (sizeof (long) == sizeof (EMACS_INT
))
2578 XSETINT (val
, atol (read_buffer
));
2584 if (isfloat_string (read_buffer
))
2586 /* Compute NaN and infinities using 0.0 in a variable,
2587 to cope with compilers that think they are smarter
2593 /* Negate the value ourselves. This treats 0, NaNs,
2594 and infinity properly on IEEE floating point hosts,
2595 and works around a common bug where atof ("-0.0")
2597 int negative
= read_buffer
[0] == '-';
2599 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2600 returns 1, is if the input ends in e+INF or e+NaN. */
2607 value
= zero
/ zero
;
2609 /* If that made a "negative" NaN, negate it. */
2613 union { double d
; char c
[sizeof (double)]; } u_data
, u_minus_zero
;
2616 u_minus_zero
.d
= - 0.0;
2617 for (i
= 0; i
< sizeof (double); i
++)
2618 if (u_data
.c
[i
] & u_minus_zero
.c
[i
])
2624 /* Now VALUE is a positive NaN. */
2627 value
= atof (read_buffer
+ negative
);
2631 return make_float (negative
? - value
: value
);
2635 Lisp_Object result
= uninterned_symbol
? make_symbol (read_buffer
)
2636 : intern (read_buffer
);
2637 if (EQ (Vread_with_symbol_positions
, Qt
)
2638 || EQ (Vread_with_symbol_positions
, readcharfun
))
2639 Vread_symbol_positions_list
=
2640 /* Kind of a hack; this will probably fail if characters
2641 in the symbol name were escaped. Not really a big
2643 Fcons (Fcons (result
,
2644 make_number (readchar_count
2645 - XFASTINT (Flength (Fsymbol_name (result
))))),
2646 Vread_symbol_positions_list
);
2654 /* List of nodes we've seen during substitute_object_in_subtree. */
2655 static Lisp_Object seen_list
;
2658 substitute_object_in_subtree (object
, placeholder
)
2660 Lisp_Object placeholder
;
2662 Lisp_Object check_object
;
2664 /* We haven't seen any objects when we start. */
2667 /* Make all the substitutions. */
2669 = substitute_object_recurse (object
, placeholder
, object
);
2671 /* Clear seen_list because we're done with it. */
2674 /* The returned object here is expected to always eq the
2676 if (!EQ (check_object
, object
))
2677 error ("Unexpected mutation error in reader");
2680 /* Feval doesn't get called from here, so no gc protection is needed. */
2681 #define SUBSTITUTE(get_val, set_val) \
2683 Lisp_Object old_value = get_val; \
2684 Lisp_Object true_value \
2685 = substitute_object_recurse (object, placeholder,\
2688 if (!EQ (old_value, true_value)) \
2695 substitute_object_recurse (object
, placeholder
, subtree
)
2697 Lisp_Object placeholder
;
2698 Lisp_Object subtree
;
2700 /* If we find the placeholder, return the target object. */
2701 if (EQ (placeholder
, subtree
))
2704 /* If we've been to this node before, don't explore it again. */
2705 if (!EQ (Qnil
, Fmemq (subtree
, seen_list
)))
2708 /* If this node can be the entry point to a cycle, remember that
2709 we've seen it. It can only be such an entry point if it was made
2710 by #n=, which means that we can find it as a value in
2712 if (!EQ (Qnil
, Frassq (subtree
, read_objects
)))
2713 seen_list
= Fcons (subtree
, seen_list
);
2715 /* Recurse according to subtree's type.
2716 Every branch must return a Lisp_Object. */
2717 switch (XTYPE (subtree
))
2719 case Lisp_Vectorlike
:
2722 int length
= XINT (Flength(subtree
));
2723 for (i
= 0; i
< length
; i
++)
2725 Lisp_Object idx
= make_number (i
);
2726 SUBSTITUTE (Faref (subtree
, idx
),
2727 Faset (subtree
, idx
, true_value
));
2734 SUBSTITUTE (Fcar_safe (subtree
),
2735 Fsetcar (subtree
, true_value
));
2736 SUBSTITUTE (Fcdr_safe (subtree
),
2737 Fsetcdr (subtree
, true_value
));
2743 /* Check for text properties in each interval.
2744 substitute_in_interval contains part of the logic. */
2746 INTERVAL root_interval
= STRING_INTERVALS (subtree
);
2747 Lisp_Object arg
= Fcons (object
, placeholder
);
2749 traverse_intervals_noorder (root_interval
,
2750 &substitute_in_interval
, arg
);
2755 /* Other types don't recurse any further. */
2761 /* Helper function for substitute_object_recurse. */
2763 substitute_in_interval (interval
, arg
)
2767 Lisp_Object object
= Fcar (arg
);
2768 Lisp_Object placeholder
= Fcdr (arg
);
2770 SUBSTITUTE(interval
->plist
, interval
->plist
= true_value
);
2789 if (*cp
== '+' || *cp
== '-')
2792 if (*cp
>= '0' && *cp
<= '9')
2795 while (*cp
>= '0' && *cp
<= '9')
2803 if (*cp
>= '0' && *cp
<= '9')
2806 while (*cp
>= '0' && *cp
<= '9')
2809 if (*cp
== 'e' || *cp
== 'E')
2813 if (*cp
== '+' || *cp
== '-')
2817 if (*cp
>= '0' && *cp
<= '9')
2820 while (*cp
>= '0' && *cp
<= '9')
2823 else if (cp
== start
)
2825 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2830 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2836 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2837 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2838 || state
== (DOT_CHAR
|TRAIL_INT
)
2839 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2840 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2841 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2846 read_vector (readcharfun
, bytecodeflag
)
2847 Lisp_Object readcharfun
;
2852 register Lisp_Object
*ptr
;
2853 register Lisp_Object tem
, item
, vector
;
2854 register struct Lisp_Cons
*otem
;
2857 tem
= read_list (1, readcharfun
);
2858 len
= Flength (tem
);
2859 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2861 size
= XVECTOR (vector
)->size
;
2862 ptr
= XVECTOR (vector
)->contents
;
2863 for (i
= 0; i
< size
; i
++)
2866 /* If `load-force-doc-strings' is t when reading a lazily-loaded
2867 bytecode object, the docstring containing the bytecode and
2868 constants values must be treated as unibyte and passed to
2869 Fread, to get the actual bytecode string and constants vector. */
2870 if (bytecodeflag
&& load_force_doc_strings
)
2872 if (i
== COMPILED_BYTECODE
)
2874 if (!STRINGP (item
))
2875 error ("Invalid byte code");
2877 /* Delay handling the bytecode slot until we know whether
2878 it is lazily-loaded (we can tell by whether the
2879 constants slot is nil). */
2880 ptr
[COMPILED_CONSTANTS
] = item
;
2883 else if (i
== COMPILED_CONSTANTS
)
2885 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
2889 /* Coerce string to unibyte (like string-as-unibyte,
2890 but without generating extra garbage and
2891 guaranteeing no change in the contents). */
2892 STRING_SET_CHARS (bytestr
, SBYTES (bytestr
));
2893 STRING_SET_UNIBYTE (bytestr
);
2895 item
= Fread (bytestr
);
2897 error ("Invalid byte code");
2899 otem
= XCONS (item
);
2900 bytestr
= XCAR (item
);
2905 /* Now handle the bytecode slot. */
2906 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
2909 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
2917 /* FLAG = 1 means check for ] to terminate rather than ) and .
2918 FLAG = -1 means check for starting with defun
2919 and make structure pure. */
2922 read_list (flag
, readcharfun
)
2924 register Lisp_Object readcharfun
;
2926 /* -1 means check next element for defun,
2927 0 means don't check,
2928 1 means already checked and found defun. */
2929 int defunflag
= flag
< 0 ? -1 : 0;
2930 Lisp_Object val
, tail
;
2931 register Lisp_Object elt
, tem
;
2932 struct gcpro gcpro1
, gcpro2
;
2933 /* 0 is the normal case.
2934 1 means this list is a doc reference; replace it with the number 0.
2935 2 means this list is a doc reference; replace it with the doc string. */
2936 int doc_reference
= 0;
2938 /* Initialize this to 1 if we are reading a list. */
2939 int first_in_list
= flag
<= 0;
2948 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2953 /* While building, if the list starts with #$, treat it specially. */
2954 if (EQ (elt
, Vload_file_name
)
2956 && !NILP (Vpurify_flag
))
2958 if (NILP (Vdoc_file_name
))
2959 /* We have not yet called Snarf-documentation, so assume
2960 this file is described in the DOC-MM.NN file
2961 and Snarf-documentation will fill in the right value later.
2962 For now, replace the whole list with 0. */
2965 /* We have already called Snarf-documentation, so make a relative
2966 file name for this file, so it can be found properly
2967 in the installed Lisp directory.
2968 We don't use Fexpand_file_name because that would make
2969 the directory absolute now. */
2970 elt
= concat2 (build_string ("../lisp/"),
2971 Ffile_name_nondirectory (elt
));
2973 else if (EQ (elt
, Vload_file_name
)
2975 && load_force_doc_strings
)
2984 Fsignal (Qinvalid_read_syntax
,
2985 Fcons (make_string (") or . in a vector", 18), Qnil
));
2993 XSETCDR (tail
, read0 (readcharfun
));
2995 val
= read0 (readcharfun
);
2996 read1 (readcharfun
, &ch
, 0);
3000 if (doc_reference
== 1)
3001 return make_number (0);
3002 if (doc_reference
== 2)
3004 /* Get a doc string from the file we are loading.
3005 If it's in saved_doc_string, get it from there. */
3006 int pos
= XINT (XCDR (val
));
3007 /* Position is negative for user variables. */
3008 if (pos
< 0) pos
= -pos
;
3009 if (pos
>= saved_doc_string_position
3010 && pos
< (saved_doc_string_position
3011 + saved_doc_string_length
))
3013 int start
= pos
- saved_doc_string_position
;
3016 /* Process quoting with ^A,
3017 and find the end of the string,
3018 which is marked with ^_ (037). */
3019 for (from
= start
, to
= start
;
3020 saved_doc_string
[from
] != 037;)
3022 int c
= saved_doc_string
[from
++];
3025 c
= saved_doc_string
[from
++];
3027 saved_doc_string
[to
++] = c
;
3029 saved_doc_string
[to
++] = 0;
3031 saved_doc_string
[to
++] = 037;
3034 saved_doc_string
[to
++] = c
;
3037 return make_string (saved_doc_string
+ start
,
3040 /* Look in prev_saved_doc_string the same way. */
3041 else if (pos
>= prev_saved_doc_string_position
3042 && pos
< (prev_saved_doc_string_position
3043 + prev_saved_doc_string_length
))
3045 int start
= pos
- prev_saved_doc_string_position
;
3048 /* Process quoting with ^A,
3049 and find the end of the string,
3050 which is marked with ^_ (037). */
3051 for (from
= start
, to
= start
;
3052 prev_saved_doc_string
[from
] != 037;)
3054 int c
= prev_saved_doc_string
[from
++];
3057 c
= prev_saved_doc_string
[from
++];
3059 prev_saved_doc_string
[to
++] = c
;
3061 prev_saved_doc_string
[to
++] = 0;
3063 prev_saved_doc_string
[to
++] = 037;
3066 prev_saved_doc_string
[to
++] = c
;
3069 return make_string (prev_saved_doc_string
+ start
,
3073 return get_doc_string (val
, 0, 0);
3078 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
3080 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
3082 tem
= (read_pure
&& flag
<= 0
3083 ? pure_cons (elt
, Qnil
)
3084 : Fcons (elt
, Qnil
));
3086 XSETCDR (tail
, tem
);
3091 defunflag
= EQ (elt
, Qdefun
);
3092 else if (defunflag
> 0)
3097 Lisp_Object Vobarray
;
3098 Lisp_Object initial_obarray
;
3100 /* oblookup stores the bucket number here, for the sake of Funintern. */
3102 int oblookup_last_bucket_number
;
3104 static int hash_string ();
3106 /* Get an error if OBARRAY is not an obarray.
3107 If it is one, return it. */
3110 check_obarray (obarray
)
3111 Lisp_Object obarray
;
3113 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3115 /* If Vobarray is now invalid, force it to be valid. */
3116 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
3118 obarray
= wrong_type_argument (Qvectorp
, obarray
);
3123 /* Intern the C string STR: return a symbol with that name,
3124 interned in the current obarray. */
3131 int len
= strlen (str
);
3132 Lisp_Object obarray
;
3135 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3136 obarray
= check_obarray (obarray
);
3137 tem
= oblookup (obarray
, str
, len
, len
);
3140 return Fintern (make_string (str
, len
), obarray
);
3143 /* Create an uninterned symbol with name STR. */
3149 int len
= strlen (str
);
3151 return Fmake_symbol ((!NILP (Vpurify_flag
)
3152 ? make_pure_string (str
, len
, len
, 0)
3153 : make_string (str
, len
)));
3156 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
3157 doc
: /* Return the canonical symbol whose name is STRING.
3158 If there is none, one is created by this function and returned.
3159 A second optional argument specifies the obarray to use;
3160 it defaults to the value of `obarray'. */)
3162 Lisp_Object string
, obarray
;
3164 register Lisp_Object tem
, sym
, *ptr
;
3166 if (NILP (obarray
)) obarray
= Vobarray
;
3167 obarray
= check_obarray (obarray
);
3169 CHECK_STRING (string
);
3171 tem
= oblookup (obarray
, SDATA (string
),
3174 if (!INTEGERP (tem
))
3177 if (!NILP (Vpurify_flag
))
3178 string
= Fpurecopy (string
);
3179 sym
= Fmake_symbol (string
);
3181 if (EQ (obarray
, initial_obarray
))
3182 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3184 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED
;
3186 if ((SREF (string
, 0) == ':')
3187 && EQ (obarray
, initial_obarray
))
3189 XSYMBOL (sym
)->constant
= 1;
3190 XSYMBOL (sym
)->value
= sym
;
3193 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
3195 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
3197 XSYMBOL (sym
)->next
= 0;
3202 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
3203 doc
: /* Return the canonical symbol named NAME, or nil if none exists.
3204 NAME may be a string or a symbol. If it is a symbol, that exact
3205 symbol is searched for.
3206 A second optional argument specifies the obarray to use;
3207 it defaults to the value of `obarray'. */)
3209 Lisp_Object name
, obarray
;
3211 register Lisp_Object tem
, string
;
3213 if (NILP (obarray
)) obarray
= Vobarray
;
3214 obarray
= check_obarray (obarray
);
3216 if (!SYMBOLP (name
))
3218 CHECK_STRING (name
);
3222 string
= SYMBOL_NAME (name
);
3224 tem
= oblookup (obarray
, SDATA (string
), SCHARS (string
), SBYTES (string
));
3225 if (INTEGERP (tem
) || (SYMBOLP (name
) && !EQ (name
, tem
)))
3231 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
3232 doc
: /* Delete the symbol named NAME, if any, from OBARRAY.
3233 The value is t if a symbol was found and deleted, nil otherwise.
3234 NAME may be a string or a symbol. If it is a symbol, that symbol
3235 is deleted, if it belongs to OBARRAY--no other symbol is deleted.
3236 OBARRAY defaults to the value of the variable `obarray'. */)
3238 Lisp_Object name
, obarray
;
3240 register Lisp_Object string
, tem
;
3243 if (NILP (obarray
)) obarray
= Vobarray
;
3244 obarray
= check_obarray (obarray
);
3247 string
= SYMBOL_NAME (name
);
3250 CHECK_STRING (name
);
3254 tem
= oblookup (obarray
, SDATA (string
),
3259 /* If arg was a symbol, don't delete anything but that symbol itself. */
3260 if (SYMBOLP (name
) && !EQ (name
, tem
))
3263 XSYMBOL (tem
)->interned
= SYMBOL_UNINTERNED
;
3264 XSYMBOL (tem
)->constant
= 0;
3265 XSYMBOL (tem
)->indirect_variable
= 0;
3267 hash
= oblookup_last_bucket_number
;
3269 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
3271 if (XSYMBOL (tem
)->next
)
3272 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
3274 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
3278 Lisp_Object tail
, following
;
3280 for (tail
= XVECTOR (obarray
)->contents
[hash
];
3281 XSYMBOL (tail
)->next
;
3284 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
3285 if (EQ (following
, tem
))
3287 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
3296 /* Return the symbol in OBARRAY whose names matches the string
3297 of SIZE characters (SIZE_BYTE bytes) at PTR.
3298 If there is no such symbol in OBARRAY, return nil.
3300 Also store the bucket number in oblookup_last_bucket_number. */
3303 oblookup (obarray
, ptr
, size
, size_byte
)
3304 Lisp_Object obarray
;
3305 register const char *ptr
;
3306 int size
, size_byte
;
3310 register Lisp_Object tail
;
3311 Lisp_Object bucket
, tem
;
3313 if (!VECTORP (obarray
)
3314 || (obsize
= XVECTOR (obarray
)->size
) == 0)
3316 obarray
= check_obarray (obarray
);
3317 obsize
= XVECTOR (obarray
)->size
;
3319 /* This is sometimes needed in the middle of GC. */
3320 obsize
&= ~ARRAY_MARK_FLAG
;
3321 /* Combining next two lines breaks VMS C 2.3. */
3322 hash
= hash_string (ptr
, size_byte
);
3324 bucket
= XVECTOR (obarray
)->contents
[hash
];
3325 oblookup_last_bucket_number
= hash
;
3326 if (EQ (bucket
, make_number (0)))
3328 else if (!SYMBOLP (bucket
))
3329 error ("Bad data in guts of obarray"); /* Like CADR error message */
3331 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
3333 if (SBYTES (SYMBOL_NAME (tail
)) == size_byte
3334 && SCHARS (SYMBOL_NAME (tail
)) == size
3335 && !bcmp (SDATA (SYMBOL_NAME (tail
)), ptr
, size_byte
))
3337 else if (XSYMBOL (tail
)->next
== 0)
3340 XSETINT (tem
, hash
);
3345 hash_string (ptr
, len
)
3346 const unsigned char *ptr
;
3349 register const unsigned char *p
= ptr
;
3350 register const unsigned char *end
= p
+ len
;
3351 register unsigned char c
;
3352 register int hash
= 0;
3357 if (c
>= 0140) c
-= 40;
3358 hash
= ((hash
<<3) + (hash
>>28) + c
);
3360 return hash
& 07777777777;
3364 map_obarray (obarray
, fn
, arg
)
3365 Lisp_Object obarray
;
3366 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
3370 register Lisp_Object tail
;
3371 CHECK_VECTOR (obarray
);
3372 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
3374 tail
= XVECTOR (obarray
)->contents
[i
];
3379 if (XSYMBOL (tail
)->next
== 0)
3381 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
3387 mapatoms_1 (sym
, function
)
3388 Lisp_Object sym
, function
;
3390 call1 (function
, sym
);
3393 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
3394 doc
: /* Call FUNCTION on every symbol in OBARRAY.
3395 OBARRAY defaults to the value of `obarray'. */)
3397 Lisp_Object function
, obarray
;
3399 if (NILP (obarray
)) obarray
= Vobarray
;
3400 obarray
= check_obarray (obarray
);
3402 map_obarray (obarray
, mapatoms_1
, function
);
3406 #define OBARRAY_SIZE 1511
3411 Lisp_Object oblength
;
3415 XSETFASTINT (oblength
, OBARRAY_SIZE
);
3417 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
3418 Vobarray
= Fmake_vector (oblength
, make_number (0));
3419 initial_obarray
= Vobarray
;
3420 staticpro (&initial_obarray
);
3421 /* Intern nil in the obarray */
3422 XSYMBOL (Qnil
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3423 XSYMBOL (Qnil
)->constant
= 1;
3425 /* These locals are to kludge around a pyramid compiler bug. */
3426 hash
= hash_string ("nil", 3);
3427 /* Separate statement here to avoid VAXC bug. */
3428 hash
%= OBARRAY_SIZE
;
3429 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
3432 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
3433 XSYMBOL (Qnil
)->function
= Qunbound
;
3434 XSYMBOL (Qunbound
)->value
= Qunbound
;
3435 XSYMBOL (Qunbound
)->function
= Qunbound
;
3438 XSYMBOL (Qnil
)->value
= Qnil
;
3439 XSYMBOL (Qnil
)->plist
= Qnil
;
3440 XSYMBOL (Qt
)->value
= Qt
;
3441 XSYMBOL (Qt
)->constant
= 1;
3443 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
3446 Qvariable_documentation
= intern ("variable-documentation");
3447 staticpro (&Qvariable_documentation
);
3449 read_buffer_size
= 100 + MAX_MULTIBYTE_LENGTH
;
3450 read_buffer
= (char *) xmalloc (read_buffer_size
);
3455 struct Lisp_Subr
*sname
;
3458 sym
= intern (sname
->symbol_name
);
3459 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3462 #ifdef NOTDEF /* use fset in subr.el now */
3464 defalias (sname
, string
)
3465 struct Lisp_Subr
*sname
;
3469 sym
= intern (string
);
3470 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3474 /* Define an "integer variable"; a symbol whose value is forwarded
3475 to a C variable of type int. Sample call: */
3476 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
3478 defvar_int (namestring
, address
)
3482 Lisp_Object sym
, val
;
3483 sym
= intern (namestring
);
3484 val
= allocate_misc ();
3485 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
3486 XINTFWD (val
)->intvar
= address
;
3487 SET_SYMBOL_VALUE (sym
, val
);
3490 /* Similar but define a variable whose value is t if address contains 1,
3491 nil if address contains 0 */
3493 defvar_bool (namestring
, address
)
3497 Lisp_Object sym
, val
;
3498 sym
= intern (namestring
);
3499 val
= allocate_misc ();
3500 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
3501 XBOOLFWD (val
)->boolvar
= address
;
3502 SET_SYMBOL_VALUE (sym
, val
);
3503 Vbyte_boolean_vars
= Fcons (sym
, Vbyte_boolean_vars
);
3506 /* Similar but define a variable whose value is the Lisp Object stored
3507 at address. Two versions: with and without gc-marking of the C
3508 variable. The nopro version is used when that variable will be
3509 gc-marked for some other reason, since marking the same slot twice
3510 can cause trouble with strings. */
3512 defvar_lisp_nopro (namestring
, address
)
3514 Lisp_Object
*address
;
3516 Lisp_Object sym
, val
;
3517 sym
= intern (namestring
);
3518 val
= allocate_misc ();
3519 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
3520 XOBJFWD (val
)->objvar
= address
;
3521 SET_SYMBOL_VALUE (sym
, val
);
3525 defvar_lisp (namestring
, address
)
3527 Lisp_Object
*address
;
3529 defvar_lisp_nopro (namestring
, address
);
3530 staticpro (address
);
3533 /* Similar but define a variable whose value is the Lisp Object stored in
3534 the current buffer. address is the address of the slot in the buffer
3535 that is current now. */
3538 defvar_per_buffer (namestring
, address
, type
, doc
)
3540 Lisp_Object
*address
;
3544 Lisp_Object sym
, val
;
3547 sym
= intern (namestring
);
3548 val
= allocate_misc ();
3549 offset
= (char *)address
- (char *)current_buffer
;
3551 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
3552 XBUFFER_OBJFWD (val
)->offset
= offset
;
3553 SET_SYMBOL_VALUE (sym
, val
);
3554 PER_BUFFER_SYMBOL (offset
) = sym
;
3555 PER_BUFFER_TYPE (offset
) = type
;
3557 if (PER_BUFFER_IDX (offset
) == 0)
3558 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
3559 slot of buffer_local_flags */
3564 /* Similar but define a variable whose value is the Lisp Object stored
3565 at a particular offset in the current kboard object. */
3568 defvar_kboard (namestring
, offset
)
3572 Lisp_Object sym
, val
;
3573 sym
= intern (namestring
);
3574 val
= allocate_misc ();
3575 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
3576 XKBOARD_OBJFWD (val
)->offset
= offset
;
3577 SET_SYMBOL_VALUE (sym
, val
);
3580 /* Record the value of load-path used at the start of dumping
3581 so we can see if the site changed it later during dumping. */
3582 static Lisp_Object dump_path
;
3588 int turn_off_warning
= 0;
3590 /* Compute the default load-path. */
3592 normal
= PATH_LOADSEARCH
;
3593 Vload_path
= decode_env_path (0, normal
);
3595 if (NILP (Vpurify_flag
))
3596 normal
= PATH_LOADSEARCH
;
3598 normal
= PATH_DUMPLOADSEARCH
;
3600 /* In a dumped Emacs, we normally have to reset the value of
3601 Vload_path from PATH_LOADSEARCH, since the value that was dumped
3602 uses ../lisp, instead of the path of the installed elisp
3603 libraries. However, if it appears that Vload_path was changed
3604 from the default before dumping, don't override that value. */
3607 if (! NILP (Fequal (dump_path
, Vload_path
)))
3609 Vload_path
= decode_env_path (0, normal
);
3610 if (!NILP (Vinstallation_directory
))
3612 Lisp_Object tem
, tem1
, sitelisp
;
3614 /* Remove site-lisp dirs from path temporarily and store
3615 them in sitelisp, then conc them on at the end so
3616 they're always first in path. */
3620 tem
= Fcar (Vload_path
);
3621 tem1
= Fstring_match (build_string ("site-lisp"),
3625 Vload_path
= Fcdr (Vload_path
);
3626 sitelisp
= Fcons (tem
, sitelisp
);
3632 /* Add to the path the lisp subdir of the
3633 installation dir, if it exists. */
3634 tem
= Fexpand_file_name (build_string ("lisp"),
3635 Vinstallation_directory
);
3636 tem1
= Ffile_exists_p (tem
);
3639 if (NILP (Fmember (tem
, Vload_path
)))
3641 turn_off_warning
= 1;
3642 Vload_path
= Fcons (tem
, Vload_path
);
3646 /* That dir doesn't exist, so add the build-time
3647 Lisp dirs instead. */
3648 Vload_path
= nconc2 (Vload_path
, dump_path
);
3650 /* Add leim under the installation dir, if it exists. */
3651 tem
= Fexpand_file_name (build_string ("leim"),
3652 Vinstallation_directory
);
3653 tem1
= Ffile_exists_p (tem
);
3656 if (NILP (Fmember (tem
, Vload_path
)))
3657 Vload_path
= Fcons (tem
, Vload_path
);
3660 /* Add site-list under the installation dir, if it exists. */
3661 tem
= Fexpand_file_name (build_string ("site-lisp"),
3662 Vinstallation_directory
);
3663 tem1
= Ffile_exists_p (tem
);
3666 if (NILP (Fmember (tem
, Vload_path
)))
3667 Vload_path
= Fcons (tem
, Vload_path
);
3670 /* If Emacs was not built in the source directory,
3671 and it is run from where it was built, add to load-path
3672 the lisp, leim and site-lisp dirs under that directory. */
3674 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
3678 tem
= Fexpand_file_name (build_string ("src/Makefile"),
3679 Vinstallation_directory
);
3680 tem1
= Ffile_exists_p (tem
);
3682 /* Don't be fooled if they moved the entire source tree
3683 AFTER dumping Emacs. If the build directory is indeed
3684 different from the source dir, src/Makefile.in and
3685 src/Makefile will not be found together. */
3686 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
3687 Vinstallation_directory
);
3688 tem2
= Ffile_exists_p (tem
);
3689 if (!NILP (tem1
) && NILP (tem2
))
3691 tem
= Fexpand_file_name (build_string ("lisp"),
3694 if (NILP (Fmember (tem
, Vload_path
)))
3695 Vload_path
= Fcons (tem
, Vload_path
);
3697 tem
= Fexpand_file_name (build_string ("leim"),
3700 if (NILP (Fmember (tem
, Vload_path
)))
3701 Vload_path
= Fcons (tem
, Vload_path
);
3703 tem
= Fexpand_file_name (build_string ("site-lisp"),
3706 if (NILP (Fmember (tem
, Vload_path
)))
3707 Vload_path
= Fcons (tem
, Vload_path
);
3710 if (!NILP (sitelisp
))
3711 Vload_path
= nconc2 (Fnreverse (sitelisp
), Vload_path
);
3717 /* NORMAL refers to the lisp dir in the source directory. */
3718 /* We used to add ../lisp at the front here, but
3719 that caused trouble because it was copied from dump_path
3720 into Vload_path, aboe, when Vinstallation_directory was non-nil.
3721 It should be unnecessary. */
3722 Vload_path
= decode_env_path (0, normal
);
3723 dump_path
= Vload_path
;
3727 #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON))))
3728 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
3729 almost never correct, thereby causing a warning to be printed out that
3730 confuses users. Since PATH_LOADSEARCH is always overridden by the
3731 EMACSLOADPATH environment variable below, disable the warning on NT.
3732 Also, when using the "self-contained" option for Carbon Emacs for MacOSX,
3733 the "standard" paths may not exist and would be overridden by
3734 EMACSLOADPATH as on NT. Since this depends on how the executable
3735 was build and packaged, turn off the warnings in general */
3737 /* Warn if dirs in the *standard* path don't exist. */
3738 if (!turn_off_warning
)
3740 Lisp_Object path_tail
;
3742 for (path_tail
= Vload_path
;
3744 path_tail
= XCDR (path_tail
))
3746 Lisp_Object dirfile
;
3747 dirfile
= Fcar (path_tail
);
3748 if (STRINGP (dirfile
))
3750 dirfile
= Fdirectory_file_name (dirfile
);
3751 if (access (SDATA (dirfile
), 0) < 0)
3752 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
3757 #endif /* !(WINDOWSNT || HAVE_CARBON) */
3759 /* If the EMACSLOADPATH environment variable is set, use its value.
3760 This doesn't apply if we're dumping. */
3762 if (NILP (Vpurify_flag
)
3763 && egetenv ("EMACSLOADPATH"))
3765 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
3769 load_in_progress
= 0;
3770 Vload_file_name
= Qnil
;
3772 load_descriptor_list
= Qnil
;
3774 Vstandard_input
= Qt
;
3775 Vloads_in_progress
= Qnil
;
3778 /* Print a warning, using format string FORMAT, that directory DIRNAME
3779 does not exist. Print it on stderr and put it in *Message*. */
3782 dir_warning (format
, dirname
)
3784 Lisp_Object dirname
;
3787 = (char *) alloca (SCHARS (dirname
) + strlen (format
) + 5);
3789 fprintf (stderr
, format
, SDATA (dirname
));
3790 sprintf (buffer
, format
, SDATA (dirname
));
3791 /* Don't log the warning before we've initialized!! */
3793 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
3800 defsubr (&Sread_from_string
);
3802 defsubr (&Sintern_soft
);
3803 defsubr (&Sunintern
);
3805 defsubr (&Seval_buffer
);
3806 defsubr (&Seval_region
);
3807 defsubr (&Sread_char
);
3808 defsubr (&Sread_char_exclusive
);
3809 defsubr (&Sread_event
);
3810 defsubr (&Sget_file_char
);
3811 defsubr (&Smapatoms
);
3812 defsubr (&Slocate_file_internal
);
3814 DEFVAR_LISP ("obarray", &Vobarray
,
3815 doc
: /* Symbol table for use by `intern' and `read'.
3816 It is a vector whose length ought to be prime for best results.
3817 The vector's contents don't make sense if examined from Lisp programs;
3818 to find all the symbols in an obarray, use `mapatoms'. */);
3820 DEFVAR_LISP ("values", &Vvalues
,
3821 doc
: /* List of values of all expressions which were read, evaluated and printed.
3822 Order is reverse chronological. */);
3824 DEFVAR_LISP ("standard-input", &Vstandard_input
,
3825 doc
: /* Stream for read to get input from.
3826 See documentation of `read' for possible values. */);
3827 Vstandard_input
= Qt
;
3829 DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions
,
3830 doc
: /* If non-nil, add position of read symbols to `read-symbol-positions-list'.
3832 If this variable is a buffer, then only forms read from that buffer
3833 will be added to `read-symbol-positions-list'.
3834 If this variable is t, then all read forms will be added.
3835 The effect of all other values other than nil are not currently
3836 defined, although they may be in the future.
3838 The positions are relative to the last call to `read' or
3839 `read-from-string'. It is probably a bad idea to set this variable at
3840 the toplevel; bind it instead. */);
3841 Vread_with_symbol_positions
= Qnil
;
3843 DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list
,
3844 doc
: /* A list mapping read symbols to their positions.
3845 This variable is modified during calls to `read' or
3846 `read-from-string', but only when `read-with-symbol-positions' is
3849 Each element of the list looks like (SYMBOL . CHAR-POSITION), where
3850 CHAR-POSITION is an integer giving the offset of that occurrence of the
3851 symbol from the position where `read' or `read-from-string' started.
3853 Note that a symbol will appear multiple times in this list, if it was
3854 read multiple times. The list is in the same order as the symbols
3856 Vread_symbol_positions_list
= Qnil
;
3858 DEFVAR_LISP ("load-path", &Vload_path
,
3859 doc
: /* *List of directories to search for files to load.
3860 Each element is a string (directory name) or nil (try default directory).
3861 Initialized based on EMACSLOADPATH environment variable, if any,
3862 otherwise to default specified by file `epaths.h' when Emacs was built. */);
3864 DEFVAR_LISP ("load-suffixes", &Vload_suffixes
,
3865 doc
: /* *List of suffixes to try for files to load.
3866 This list should not include the empty string. */);
3867 Vload_suffixes
= Fcons (build_string (".elc"),
3868 Fcons (build_string (".el"), Qnil
));
3869 /* We don't use empty_string because it's not initialized yet. */
3870 default_suffixes
= Fcons (build_string (""), Qnil
);
3871 staticpro (&default_suffixes
);
3873 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
3874 doc
: /* Non-nil iff inside of `load'. */);
3876 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
3877 doc
: /* An alist of expressions to be evalled when particular files are loaded.
3878 Each element looks like (FILENAME FORMS...).
3879 When `load' is run and the file-name argument is FILENAME,
3880 the FORMS in the corresponding element are executed at the end of loading.
3882 FILENAME must match exactly! Normally FILENAME is the name of a library,
3883 with no directory specified, since that is how `load' is normally called.
3884 An error in FORMS does not undo the load,
3885 but does prevent execution of the rest of the FORMS.
3886 FILENAME can also be a symbol (a feature) and FORMS are then executed
3887 when the corresponding call to `provide' is made. */);
3888 Vafter_load_alist
= Qnil
;
3890 DEFVAR_LISP ("load-history", &Vload_history
,
3891 doc
: /* Alist mapping file names to symbols and features.
3892 Each alist element is a list that starts with a file name,
3893 except for one element (optional) that starts with nil and describes
3894 definitions evaluated from buffers not visiting files.
3895 The remaining elements of each list are symbols defined as variables
3896 and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)',
3897 `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'.
3898 An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)',
3899 and means that SYMBOL was an autoload before this file redefined it
3902 During preloading, the file name recorded is relative to the main Lisp
3903 directory. These file names are converted to absolute at startup. */);
3904 Vload_history
= Qnil
;
3906 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
3907 doc
: /* Full name of file being loaded by `load'. */);
3908 Vload_file_name
= Qnil
;
3910 DEFVAR_LISP ("user-init-file", &Vuser_init_file
,
3911 doc
: /* File name, including directory, of user's initialization file.
3912 If the file loaded had extension `.elc', and the corresponding source file
3913 exists, this variable contains the name of source file, suitable for use
3914 by functions like `custom-save-all' which edit the init file. */);
3915 Vuser_init_file
= Qnil
;
3917 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
3918 doc
: /* Used for internal purposes by `load'. */);
3919 Vcurrent_load_list
= Qnil
;
3921 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
3922 doc
: /* Function used by `load' and `eval-region' for reading expressions.
3923 The default is nil, which means use the function `read'. */);
3924 Vload_read_function
= Qnil
;
3926 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
3927 doc
: /* Function called in `load' for loading an Emacs lisp source file.
3928 This function is for doing code conversion before reading the source file.
3929 If nil, loading is done without any code conversion.
3930 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where
3931 FULLNAME is the full name of FILE.
3932 See `load' for the meaning of the remaining arguments. */);
3933 Vload_source_file_function
= Qnil
;
3935 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
3936 doc
: /* Non-nil means `load' should force-load all dynamic doc strings.
3937 This is useful when the file being loaded is a temporary copy. */);
3938 load_force_doc_strings
= 0;
3940 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
3941 doc
: /* Non-nil means `read' converts strings to unibyte whenever possible.
3942 This is normally bound by `load' and `eval-buffer' to control `read',
3943 and is not meant for users to change. */);
3944 load_convert_to_unibyte
= 0;
3946 DEFVAR_LISP ("source-directory", &Vsource_directory
,
3947 doc
: /* Directory in which Emacs sources were found when Emacs was built.
3948 You cannot count on them to still be there! */);
3950 = Fexpand_file_name (build_string ("../"),
3951 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3953 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3954 doc
: /* List of files that were preloaded (when dumping Emacs). */);
3955 Vpreloaded_file_list
= Qnil
;
3957 DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars
,
3958 doc
: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */);
3959 Vbyte_boolean_vars
= Qnil
;
3961 DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries
,
3962 doc
: /* Non-nil means load dangerous compiled Lisp files.
3963 Some versions of XEmacs use different byte codes than Emacs. These
3964 incompatible byte codes can make Emacs crash when it tries to execute
3966 load_dangerous_libraries
= 0;
3968 DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp
,
3969 doc
: /* Regular expression matching safe to load compiled Lisp files.
3970 When Emacs loads a compiled Lisp file, it reads the first 512 bytes
3971 from the file, and matches them against this regular expression.
3972 When the regular expression matches, the file is considered to be safe
3973 to load. See also `load-dangerous-libraries'. */);
3974 Vbytecomp_version_regexp
3975 = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
3977 DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list
,
3978 doc
: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */);
3979 Veval_buffer_list
= Qnil
;
3981 /* Vsource_directory was initialized in init_lread. */
3983 load_descriptor_list
= Qnil
;
3984 staticpro (&load_descriptor_list
);
3986 Qcurrent_load_list
= intern ("current-load-list");
3987 staticpro (&Qcurrent_load_list
);
3989 Qstandard_input
= intern ("standard-input");
3990 staticpro (&Qstandard_input
);
3992 Qread_char
= intern ("read-char");
3993 staticpro (&Qread_char
);
3995 Qget_file_char
= intern ("get-file-char");
3996 staticpro (&Qget_file_char
);
3998 Qbackquote
= intern ("`");
3999 staticpro (&Qbackquote
);
4000 Qcomma
= intern (",");
4001 staticpro (&Qcomma
);
4002 Qcomma_at
= intern (",@");
4003 staticpro (&Qcomma_at
);
4004 Qcomma_dot
= intern (",.");
4005 staticpro (&Qcomma_dot
);
4007 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
4008 staticpro (&Qinhibit_file_name_operation
);
4010 Qascii_character
= intern ("ascii-character");
4011 staticpro (&Qascii_character
);
4013 Qfunction
= intern ("function");
4014 staticpro (&Qfunction
);
4016 Qload
= intern ("load");
4019 Qload_file_name
= intern ("load-file-name");
4020 staticpro (&Qload_file_name
);
4022 Qeval_buffer_list
= intern ("eval-buffer-list");
4023 staticpro (&Qeval_buffer_list
);
4025 staticpro (&dump_path
);
4027 staticpro (&read_objects
);
4028 read_objects
= Qnil
;
4029 staticpro (&seen_list
);
4032 Vloads_in_progress
= Qnil
;
4033 staticpro (&Vloads_in_progress
);
4036 /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d
4037 (do not change this comment) */