1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 1998
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include <sys/types.h>
37 #include "termhooks.h"
41 #include <sys/inode.h>
46 #include <unistd.h> /* to get X_OK */
59 #ifdef LISP_FLOAT_TYPE
65 #endif /* LISP_FLOAT_TYPE */
69 #endif /* HAVE_SETLOCALE */
77 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
78 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
79 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
80 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
81 Lisp_Object Qinhibit_file_name_operation
;
83 extern Lisp_Object Qevent_symbol_element_mask
;
84 extern Lisp_Object Qfile_exists_p
;
86 /* non-zero if inside `load' */
89 /* Directory in which the sources were found. */
90 Lisp_Object Vsource_directory
;
92 /* Search path for files to be loaded. */
93 Lisp_Object Vload_path
;
95 /* This is the user-visible association list that maps features to
96 lists of defs in their load files. */
97 Lisp_Object Vload_history
;
99 /* This is used to build the load history. */
100 Lisp_Object Vcurrent_load_list
;
102 /* List of files that were preloaded. */
103 Lisp_Object Vpreloaded_file_list
;
105 /* Name of file actually being read by `load'. */
106 Lisp_Object Vload_file_name
;
108 /* Function to use for reading, in `load' and friends. */
109 Lisp_Object Vload_read_function
;
111 /* The association list of objects read with the #n=object form.
112 Each member of the list has the form (n . object), and is used to
113 look up the object for the corresponding #n# construct.
114 It must be set to nil before all top-level calls to read0. */
115 Lisp_Object read_objects
;
117 /* Nonzero means load should forcibly load all dynamic doc strings. */
118 static int load_force_doc_strings
;
120 /* Nonzero means read should convert strings to unibyte. */
121 static int load_convert_to_unibyte
;
123 /* Function to use for loading an Emacs lisp source file (not
124 compiled) instead of readevalloop. */
125 Lisp_Object Vload_source_file_function
;
127 /* List of descriptors now open for Fload. */
128 static Lisp_Object load_descriptor_list
;
130 /* File for get_file_char to read from. Use by load. */
131 static FILE *instream
;
133 /* When nonzero, read conses in pure space */
134 static int read_pure
;
136 /* For use within read-from-string (this reader is non-reentrant!!) */
137 static int read_from_string_index
;
138 static int read_from_string_index_byte
;
139 static int read_from_string_limit
;
141 /* Number of bytes left to read in the buffer character
142 that `readchar' has already advanced over. */
143 static int readchar_backlog
;
145 /* This contains the last string skipped with #@. */
146 static char *saved_doc_string
;
147 /* Length of buffer allocated in saved_doc_string. */
148 static int saved_doc_string_size
;
149 /* Length of actual data in saved_doc_string. */
150 static int saved_doc_string_length
;
151 /* This is the file position that string came from. */
152 static int saved_doc_string_position
;
154 /* This contains the previous string skipped with #@.
155 We copy it from saved_doc_string when a new string
156 is put in saved_doc_string. */
157 static char *prev_saved_doc_string
;
158 /* Length of buffer allocated in prev_saved_doc_string. */
159 static int prev_saved_doc_string_size
;
160 /* Length of actual data in prev_saved_doc_string. */
161 static int prev_saved_doc_string_length
;
162 /* This is the file position that string came from. */
163 static int prev_saved_doc_string_position
;
165 /* Nonzero means inside a new-style backquote
166 with no surrounding parentheses.
167 Fread initializes this to zero, so we need not specbind it
168 or worry about what happens to it when there is an error. */
169 static int new_backquote_flag
;
171 /* Handle unreading and rereading of characters.
172 Write READCHAR to read a character,
173 UNREAD(c) to unread c to be read again.
175 These macros actually read/unread a byte code, multibyte characters
176 are not handled here. The caller should manage them if necessary.
179 #define READCHAR readchar (readcharfun)
180 #define UNREAD(c) unreadchar (readcharfun, c)
183 readchar (readcharfun
)
184 Lisp_Object readcharfun
;
187 register int c
, mpos
;
189 if (BUFFERP (readcharfun
))
191 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
193 int pt_byte
= BUF_PT_BYTE (inbuffer
);
194 int orig_pt_byte
= pt_byte
;
196 if (readchar_backlog
> 0)
197 /* We get the address of the byte just passed,
198 which is the last byte of the character.
199 The other bytes in this character are consecutive with it,
200 because the gap can't be in the middle of a character. */
201 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
202 - --readchar_backlog
);
204 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
207 readchar_backlog
= -1;
209 if (! NILP (inbuffer
->enable_multibyte_characters
))
211 unsigned char workbuf
[4];
212 unsigned char *str
= workbuf
;
215 /* Fetch the character code from the buffer. */
216 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
217 BUF_INC_POS (inbuffer
, pt_byte
);
218 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
220 /* Find the byte-sequence representation of that character. */
221 if (SINGLE_BYTE_CHAR_P (c
))
222 length
= 1, workbuf
[0] = c
;
224 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
226 /* If the bytes for this character in the buffer
227 are not identical with what the character code implies,
228 read the bytes one by one from the buffer. */
229 if (length
!= pt_byte
- orig_pt_byte
230 || (length
== 1 ? *str
!= *p
: bcmp (str
, p
, length
)))
232 readchar_backlog
= pt_byte
- orig_pt_byte
;
233 c
= BUF_FETCH_BYTE (inbuffer
, orig_pt_byte
);
239 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
242 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
246 if (MARKERP (readcharfun
))
248 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
250 int bytepos
= marker_byte_position (readcharfun
);
251 int orig_bytepos
= bytepos
;
253 if (readchar_backlog
> 0)
254 /* We get the address of the byte just passed,
255 which is the last byte of the character.
256 The other bytes in this character are consecutive with it,
257 because the gap can't be in the middle of a character. */
258 return *(BUF_BYTE_ADDRESS (inbuffer
, XMARKER (readcharfun
)->bytepos
- 1)
259 - --readchar_backlog
);
261 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
264 readchar_backlog
= -1;
266 if (! NILP (inbuffer
->enable_multibyte_characters
))
268 unsigned char workbuf
[4];
269 unsigned char *str
= workbuf
;
272 /* Fetch the character code from the buffer. */
273 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
274 BUF_INC_POS (inbuffer
, bytepos
);
275 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
277 /* Find the byte-sequence representation of that character. */
278 if (SINGLE_BYTE_CHAR_P (c
))
279 length
= 1, workbuf
[0] = c
;
281 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
283 /* If the bytes for this character in the buffer
284 are not identical with what the character code implies,
285 read the bytes one by one from the buffer. */
286 if (length
!= bytepos
- orig_bytepos
287 || (length
== 1 ? *str
!= *p
: bcmp (str
, p
, length
)))
289 readchar_backlog
= bytepos
- orig_bytepos
;
290 c
= BUF_FETCH_BYTE (inbuffer
, orig_bytepos
);
296 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
300 XMARKER (readcharfun
)->bytepos
= bytepos
;
301 XMARKER (readcharfun
)->charpos
++;
306 if (EQ (readcharfun
, Qlambda
))
307 return read_bytecode_char (0);
309 if (EQ (readcharfun
, Qget_file_char
))
313 /* Interrupted reads have been observed while reading over the network */
314 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
323 if (STRINGP (readcharfun
))
325 if (read_from_string_index
>= read_from_string_limit
)
327 else if (STRING_MULTIBYTE (readcharfun
))
328 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
329 read_from_string_index
,
330 read_from_string_index_byte
);
332 c
= XSTRING (readcharfun
)->data
[read_from_string_index
++];
337 tem
= call0 (readcharfun
);
344 /* Unread the character C in the way appropriate for the stream READCHARFUN.
345 If the stream is a user function, call it with the char as argument. */
348 unreadchar (readcharfun
, c
)
349 Lisp_Object readcharfun
;
353 /* Don't back up the pointer if we're unreading the end-of-input mark,
354 since readchar didn't advance it when we read it. */
356 else if (BUFFERP (readcharfun
))
358 struct buffer
*b
= XBUFFER (readcharfun
);
359 int bytepos
= BUF_PT_BYTE (b
);
361 if (readchar_backlog
>= 0)
366 if (! NILP (b
->enable_multibyte_characters
))
367 BUF_DEC_POS (b
, bytepos
);
371 BUF_PT_BYTE (b
) = bytepos
;
374 else if (MARKERP (readcharfun
))
376 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
377 int bytepos
= XMARKER (readcharfun
)->bytepos
;
379 if (readchar_backlog
>= 0)
383 XMARKER (readcharfun
)->charpos
--;
384 if (! NILP (b
->enable_multibyte_characters
))
385 BUF_DEC_POS (b
, bytepos
);
389 XMARKER (readcharfun
)->bytepos
= bytepos
;
392 else if (STRINGP (readcharfun
))
394 read_from_string_index
--;
395 read_from_string_index_byte
396 = string_char_to_byte (readcharfun
, read_from_string_index
);
398 else if (EQ (readcharfun
, Qlambda
))
399 read_bytecode_char (1);
400 else if (EQ (readcharfun
, Qget_file_char
))
401 ungetc (c
, instream
);
403 call1 (readcharfun
, make_number (c
));
406 static Lisp_Object
read0 (), read1 (), read_list (), read_vector ();
407 static int read_multibyte ();
409 /* Get a character from the tty. */
411 extern Lisp_Object
read_char ();
413 /* Read input events until we get one that's acceptable for our purposes.
415 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
416 until we get a character we like, and then stuffed into
419 If ASCII_REQUIRED is non-zero, we check function key events to see
420 if the unmodified version of the symbol has a Qascii_character
421 property, and use that character, if present.
423 If ERROR_NONASCII is non-zero, we signal an error if the input we
424 get isn't an ASCII character with modifiers. If it's zero but
425 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
428 If INPUT_METHOD is nonzero, we invoke the current input method
429 if the character warrants that. */
432 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
434 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
437 return make_number (getchar ());
439 register Lisp_Object val
, delayed_switch_frame
;
441 delayed_switch_frame
= Qnil
;
443 /* Read until we get an acceptable event. */
445 val
= read_char (0, 0, 0,
446 (input_method
? Qnil
: Qt
),
452 /* switch-frame events are put off until after the next ASCII
453 character. This is better than signaling an error just because
454 the last characters were typed to a separate minibuffer frame,
455 for example. Eventually, some code which can deal with
456 switch-frame events will read it and process it. */
458 && EVENT_HAS_PARAMETERS (val
)
459 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
461 delayed_switch_frame
= val
;
467 /* Convert certain symbols to their ASCII equivalents. */
470 Lisp_Object tem
, tem1
, tem2
;
471 tem
= Fget (val
, Qevent_symbol_element_mask
);
474 tem1
= Fget (Fcar (tem
), Qascii_character
);
475 /* Merge this symbol's modifier bits
476 with the ASCII equivalent of its basic code. */
478 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
482 /* If we don't have a character now, deal with it appropriately. */
487 Vunread_command_events
= Fcons (val
, Qnil
);
488 error ("Non-character input-event");
495 if (! NILP (delayed_switch_frame
))
496 unread_switch_frame
= delayed_switch_frame
;
502 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 2, 0,
503 "Read a character from the command input (keyboard or macro).\n\
504 It is returned as a number.\n\
505 If the user generates an event which is not a character (i.e. a mouse\n\
506 click or function key event), `read-char' signals an error. As an\n\
507 exception, switch-frame events are put off until non-ASCII events can\n\
509 If you want to read non-character events, or ignore them, call\n\
510 `read-event' or `read-char-exclusive' instead.\n\
512 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
513 If the optional argument SUPPRESS-INPUT-METHOD is non-nil,\n\
514 disable input method processing for this character.")
515 (prompt
, suppress_input_method
)
516 Lisp_Object prompt
, suppress_input_method
;
519 message_with_string ("%s", prompt
, 0);
520 return read_filtered_event (1, 1, 1, NILP (suppress_input_method
));
523 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 2, 0,
524 "Read an event object from the input stream.\n\
525 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
526 If the optional argument SUPPRESS-INPUT-METHOD is non-nil,\n\
527 disable input method processing for this character.")
528 (prompt
, suppress_input_method
)
529 Lisp_Object prompt
, suppress_input_method
;
532 message_with_string ("%s", prompt
, 0);
533 return read_filtered_event (0, 0, 0, NILP (suppress_input_method
));
536 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 2, 0,
537 "Read a character from the command input (keyboard or macro).\n\
538 It is returned as a number. Non-character events are ignored.\n\
540 If the optional argument PROMPT is non-nil, display that as a prompt.\n\
541 If the optional argument SUPPRESS-INPUT-METHOD is non-nil,\n\
542 disable input method processing for this character.")
543 (prompt
, suppress_input_method
)
544 Lisp_Object prompt
, suppress_input_method
;
547 message_with_string ("%s", prompt
, 0);
548 return read_filtered_event (1, 1, 0, NILP (suppress_input_method
));
551 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
552 "Don't use this yourself.")
555 register Lisp_Object val
;
556 XSETINT (val
, getc (instream
));
560 static void readevalloop ();
561 static Lisp_Object
load_unwind ();
562 static Lisp_Object
load_descriptor_unwind ();
564 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
565 "Execute a file of Lisp code named FILE.\n\
566 First try FILE with `.elc' appended, then try with `.el',\n\
567 then try FILE unmodified.\n\
568 This function searches the directories in `load-path'.\n\
569 If optional second arg NOERROR is non-nil,\n\
570 report no error if FILE doesn't exist.\n\
571 Print messages at start and end of loading unless\n\
572 optional third arg NOMESSAGE is non-nil.\n\
573 If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\
574 suffixes `.elc' or `.el' to the specified name FILE.\n\
575 If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\
576 the suffix `.elc' or `.el'; don't accept just FILE unless\n\
577 it ends in one of those suffixes or includes a directory name.\n\
578 Return t if file exists.")
579 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
580 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
582 register FILE *stream
;
583 register int fd
= -1;
584 register Lisp_Object lispstream
;
585 int count
= specpdl_ptr
- specpdl
;
589 /* 1 means we printed the ".el is newer" message. */
591 /* 1 means we are loading a compiled file. */
599 CHECK_STRING (file
, 0);
601 /* If file name is magic, call the handler. */
602 handler
= Ffind_file_name_handler (file
, Qload
);
604 return call5 (handler
, Qload
, file
, noerror
, nomessage
, nosuffix
);
606 /* Do this after the handler to avoid
607 the need to gcpro noerror, nomessage and nosuffix.
608 (Below here, we care only whether they are nil or not.) */
609 file
= Fsubstitute_in_file_name (file
);
611 /* Avoid weird lossage with null string as arg,
612 since it would try to load a directory as a Lisp file */
613 if (XSTRING (file
)->size
> 0)
615 int size
= XSTRING (file
)->size
;
619 if (! NILP (must_suffix
))
621 /* Don't insist on adding a suffix if FILE already ends with one. */
623 && !strcmp (XSTRING (file
)->data
+ size
- 3, ".el"))
626 && !strcmp (XSTRING (file
)->data
+ size
- 4, ".elc"))
628 /* Don't insist on adding a suffix
629 if the argument includes a directory name. */
630 else if (! NILP (Ffile_name_directory (file
)))
634 fd
= openp (Vload_path
, file
,
635 (!NILP (nosuffix
) ? ""
636 : ! NILP (must_suffix
) ? ".elc:.el"
646 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
647 Fcons (file
, Qnil
)));
652 /* If FD is 0, that means openp found a magic file. */
655 if (NILP (Fequal (found
, file
)))
656 /* If FOUND is a different file name from FILE,
657 find its handler even if we have already inhibited
658 the `load' operation on FILE. */
659 handler
= Ffind_file_name_handler (found
, Qt
);
661 handler
= Ffind_file_name_handler (found
, Qload
);
662 if (! NILP (handler
))
663 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
666 /* Load .elc files directly, but not when they are
667 remote and have no handler! */
668 if (!bcmp (&(XSTRING (found
)->data
[XSTRING (found
)->size
- 4]),
680 stat ((char *)XSTRING (found
)->data
, &s1
);
681 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 0;
682 result
= stat ((char *)XSTRING (found
)->data
, &s2
);
683 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
685 /* Make the progress messages mention that source is newer. */
688 /* If we won't print another message, mention this anyway. */
689 if (! NILP (nomessage
))
690 message_with_string ("Source file `%s' newer than byte-compiled file",
693 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 'c';
697 /* We are loading a source file (*.el). */
698 if (!NILP (Vload_source_file_function
))
702 return call4 (Vload_source_file_function
, found
, file
,
703 NILP (noerror
) ? Qnil
: Qt
,
704 NILP (nomessage
) ? Qnil
: Qt
);
710 stream
= fopen ((char *) XSTRING (found
)->data
, fmode
);
711 #else /* not WINDOWSNT */
712 stream
= fdopen (fd
, fmode
);
713 #endif /* not WINDOWSNT */
717 error ("Failure to create stdio stream for %s", XSTRING (file
)->data
);
720 if (! NILP (Vpurify_flag
))
721 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
723 if (NILP (nomessage
))
726 message_with_string ("Loading %s (source)...", file
, 1);
728 message_with_string ("Loading %s (compiled; note, source file is newer)...",
730 else /* The typical case; compiled file newer than source file. */
731 message_with_string ("Loading %s...", file
, 1);
735 lispstream
= Fcons (Qnil
, Qnil
);
736 XSETFASTINT (XCONS (lispstream
)->car
, (EMACS_UINT
)stream
>> 16);
737 XSETFASTINT (XCONS (lispstream
)->cdr
, (EMACS_UINT
)stream
& 0xffff);
738 record_unwind_protect (load_unwind
, lispstream
);
739 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
740 specbind (Qload_file_name
, found
);
741 specbind (Qinhibit_file_name_operation
, Qnil
);
743 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
745 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0, Qnil
, Qnil
);
746 unbind_to (count
, Qnil
);
748 /* Run any load-hooks for this file. */
749 temp
= Fassoc (file
, Vafter_load_alist
);
751 Fprogn (Fcdr (temp
));
754 if (saved_doc_string
)
755 free (saved_doc_string
);
756 saved_doc_string
= 0;
757 saved_doc_string_size
= 0;
759 if (prev_saved_doc_string
)
760 free (prev_saved_doc_string
);
761 prev_saved_doc_string
= 0;
762 prev_saved_doc_string_size
= 0;
764 if (!noninteractive
&& NILP (nomessage
))
767 message_with_string ("Loading %s (source)...done", file
, 1);
769 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
771 else /* The typical case; compiled file newer than source file. */
772 message_with_string ("Loading %s...done", file
, 1);
778 load_unwind (stream
) /* used as unwind-protect function in load */
781 fclose ((FILE *) (XFASTINT (XCONS (stream
)->car
) << 16
782 | XFASTINT (XCONS (stream
)->cdr
)));
783 if (--load_in_progress
< 0) load_in_progress
= 0;
788 load_descriptor_unwind (oldlist
)
791 load_descriptor_list
= oldlist
;
795 /* Close all descriptors in use for Floads.
796 This is used when starting a subprocess. */
803 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCONS (tail
)->cdr
)
804 close (XFASTINT (XCONS (tail
)->car
));
809 complete_filename_p (pathname
)
810 Lisp_Object pathname
;
812 register unsigned char *s
= XSTRING (pathname
)->data
;
813 return (IS_DIRECTORY_SEP (s
[0])
814 || (XSTRING (pathname
)->size
> 2
815 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
825 /* Search for a file whose name is STR, looking in directories
826 in the Lisp list PATH, and trying suffixes from SUFFIX.
827 SUFFIX is a string containing possible suffixes separated by colons.
828 On success, returns a file descriptor. On failure, returns -1.
830 EXEC_ONLY nonzero means don't open the files,
831 just look for one that is executable. In this case,
832 returns 1 on success.
834 If STOREPTR is nonzero, it points to a slot where the name of
835 the file actually found should be stored as a Lisp string.
836 nil is stored there on failure.
838 If the file we find is remote, return 0
839 but store the found remote file name in *STOREPTR.
840 We do not check for remote files if EXEC_ONLY is nonzero. */
843 openp (path
, str
, suffix
, storeptr
, exec_only
)
844 Lisp_Object path
, str
;
846 Lisp_Object
*storeptr
;
852 register char *fn
= buf
;
855 Lisp_Object filename
;
863 if (complete_filename_p (str
))
866 for (; !NILP (path
); path
= Fcdr (path
))
870 filename
= Fexpand_file_name (str
, Fcar (path
));
871 if (!complete_filename_p (filename
))
872 /* If there are non-absolute elts in PATH (eg ".") */
873 /* Of course, this could conceivably lose if luser sets
874 default-directory to be something non-absolute... */
876 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
877 if (!complete_filename_p (filename
))
878 /* Give up on this path element! */
882 /* Calculate maximum size of any filename made from
883 this path element/specified file name and any possible suffix. */
884 want_size
= strlen (suffix
) + XSTRING (filename
)->size
+ 1;
885 if (fn_size
< want_size
)
886 fn
= (char *) alloca (fn_size
= 100 + want_size
);
890 /* Loop over suffixes. */
893 char *esuffix
= (char *) index (nsuffix
, ':');
894 int lsuffix
= esuffix
? esuffix
- nsuffix
: strlen (nsuffix
);
897 /* Concatenate path element/specified name with the suffix.
898 If the directory starts with /:, remove that. */
899 if (XSTRING (filename
)->size
> 2
900 && XSTRING (filename
)->data
[0] == '/'
901 && XSTRING (filename
)->data
[1] == ':')
903 strncpy (fn
, XSTRING (filename
)->data
+ 2,
904 XSTRING (filename
)->size
- 2);
905 fn
[XSTRING (filename
)->size
- 2] = 0;
909 strncpy (fn
, XSTRING (filename
)->data
, XSTRING (filename
)->size
);
910 fn
[XSTRING (filename
)->size
] = 0;
913 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
914 strncat (fn
, nsuffix
, lsuffix
);
916 /* Check that the file exists and is not a directory. */
920 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
921 if (! NILP (handler
) && ! exec_only
)
926 string
= build_string (fn
);
927 exists
= ! NILP (exec_only
? Ffile_executable_p (string
)
928 : Ffile_readable_p (string
));
930 && ! NILP (Ffile_directory_p (build_string (fn
))))
935 /* We succeeded; return this descriptor and filename. */
937 *storeptr
= build_string (fn
);
944 int exists
= (stat (fn
, &st
) >= 0
945 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
948 /* Check that we can access or open it. */
950 fd
= (access (fn
, X_OK
) == 0) ? 1 : -1;
952 fd
= open (fn
, O_RDONLY
, 0);
956 /* We succeeded; return this descriptor and filename. */
958 *storeptr
= build_string (fn
);
965 /* Advance to next suffix. */
968 nsuffix
+= lsuffix
+ 1;
979 /* Merge the list we've accumulated of globals from the current input source
980 into the load_history variable. The details depend on whether
981 the source has an associated file name or not. */
984 build_load_history (stream
, source
)
988 register Lisp_Object tail
, prev
, newelt
;
989 register Lisp_Object tem
, tem2
;
990 register int foundit
, loading
;
992 /* Don't bother recording anything for preloaded files. */
993 if (!NILP (Vpurify_flag
))
996 loading
= stream
|| !NARROWED
;
998 tail
= Vload_history
;
1001 while (!NILP (tail
))
1005 /* Find the feature's previous assoc list... */
1006 if (!NILP (Fequal (source
, Fcar (tem
))))
1010 /* If we're loading, remove it. */
1014 Vload_history
= Fcdr (tail
);
1016 Fsetcdr (prev
, Fcdr (tail
));
1019 /* Otherwise, cons on new symbols that are not already members. */
1022 tem2
= Vcurrent_load_list
;
1024 while (CONSP (tem2
))
1026 newelt
= Fcar (tem2
);
1028 if (NILP (Fmemq (newelt
, tem
)))
1029 Fsetcar (tail
, Fcons (Fcar (tem
),
1030 Fcons (newelt
, Fcdr (tem
))));
1043 /* If we're loading, cons the new assoc onto the front of load-history,
1044 the most-recently-loaded position. Also do this if we didn't find
1045 an existing member for the current source. */
1046 if (loading
|| !foundit
)
1047 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1052 unreadpure () /* Used as unwind-protect function in readevalloop */
1059 readevalloop_1 (old
)
1062 load_convert_to_unibyte
= ! NILP (old
);
1066 /* UNIBYTE specifies how to set load_convert_to_unibyte
1067 for this invocation.
1068 READFUN, if non-nil, is used instead of `read'. */
1071 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
, unibyte
, readfun
)
1072 Lisp_Object readcharfun
;
1074 Lisp_Object sourcename
;
1075 Lisp_Object (*evalfun
) ();
1077 Lisp_Object unibyte
, readfun
;
1080 register Lisp_Object val
;
1081 int count
= specpdl_ptr
- specpdl
;
1082 struct gcpro gcpro1
;
1083 struct buffer
*b
= 0;
1085 if (BUFFERP (readcharfun
))
1086 b
= XBUFFER (readcharfun
);
1087 else if (MARKERP (readcharfun
))
1088 b
= XMARKER (readcharfun
)->buffer
;
1090 specbind (Qstandard_input
, readcharfun
);
1091 specbind (Qcurrent_load_list
, Qnil
);
1092 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1093 load_convert_to_unibyte
= !NILP (unibyte
);
1095 readchar_backlog
= -1;
1097 GCPRO1 (sourcename
);
1099 LOADHIST_ATTACH (sourcename
);
1103 if (b
!= 0 && NILP (b
->name
))
1104 error ("Reading from killed buffer");
1110 while ((c
= READCHAR
) != '\n' && c
!= -1);
1115 /* Ignore whitespace here, so we can detect eof. */
1116 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
1119 if (!NILP (Vpurify_flag
) && c
== '(')
1121 int count1
= specpdl_ptr
- specpdl
;
1122 record_unwind_protect (unreadpure
, Qnil
);
1123 val
= read_list (-1, readcharfun
);
1124 unbind_to (count1
, Qnil
);
1129 read_objects
= Qnil
;
1130 if (! NILP (readfun
))
1131 val
= call1 (readfun
, readcharfun
);
1132 else if (! NILP (Vload_read_function
))
1133 val
= call1 (Vload_read_function
, readcharfun
);
1135 val
= read0 (readcharfun
);
1138 val
= (*evalfun
) (val
);
1141 Vvalues
= Fcons (val
, Vvalues
);
1142 if (EQ (Vstandard_output
, Qt
))
1149 build_load_history (stream
, sourcename
);
1152 unbind_to (count
, Qnil
);
1157 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 4, "",
1158 "Execute the current buffer as Lisp code.\n\
1159 Programs can pass two arguments, BUFFER and PRINTFLAG.\n\
1160 BUFFER is the buffer to evaluate (nil means use current buffer).\n\
1161 PRINTFLAG controls printing of output:\n\
1162 nil means discard it; anything else is stream for print.\n\
1164 If the optional third argument FILENAME is non-nil,\n\
1165 it specifies the file name to use for `load-history'.\n\
1167 This function preserves the position of point.")
1168 (buffer
, printflag
, filename
, unibyte
)
1169 Lisp_Object buffer
, printflag
, filename
, unibyte
;
1171 int count
= specpdl_ptr
- specpdl
;
1172 Lisp_Object tem
, buf
;
1175 buf
= Fcurrent_buffer ();
1177 buf
= Fget_buffer (buffer
);
1179 error ("No such buffer");
1181 if (NILP (printflag
))
1186 if (NILP (filename
))
1187 filename
= XBUFFER (buf
)->filename
;
1189 specbind (Qstandard_output
, tem
);
1190 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1191 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1192 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
), unibyte
, Qnil
);
1193 unbind_to (count
, Qnil
);
1199 XDEFUN ("eval-current-buffer", Feval_current_buffer
, Seval_current_buffer
, 0, 1, "",
1200 "Execute the current buffer as Lisp code.\n\
1201 Programs can pass argument PRINTFLAG which controls printing of output:\n\
1202 nil means discard it; anything else is stream for print.\n\
1204 If there is no error, point does not move. If there is an error,\n\
1205 point remains at the end of the last character read from the buffer.")
1207 Lisp_Object printflag
;
1209 int count
= specpdl_ptr
- specpdl
;
1210 Lisp_Object tem
, cbuf
;
1212 cbuf
= Fcurrent_buffer ()
1214 if (NILP (printflag
))
1218 specbind (Qstandard_output
, tem
);
1219 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1221 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1222 !NILP (printflag
), Qnil
, Qnil
);
1223 return unbind_to (count
, Qnil
);
1227 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1228 "Execute the region as Lisp code.\n\
1229 When called from programs, expects two arguments,\n\
1230 giving starting and ending indices in the current buffer\n\
1231 of the text to be executed.\n\
1232 Programs can pass third argument PRINTFLAG which controls output:\n\
1233 nil means discard it; anything else is stream for printing it.\n\
1234 Also the fourth argument READ-FUNCTION, if non-nil, is used\n\
1235 instead of `read' to read each expression. It gets one argument\n\
1236 which is the input stream for reading characters.\n\
1238 This function does not move point.")
1239 (start
, end
, printflag
, read_function
)
1240 Lisp_Object start
, end
, printflag
, read_function
;
1242 int count
= specpdl_ptr
- specpdl
;
1243 Lisp_Object tem
, cbuf
;
1245 cbuf
= Fcurrent_buffer ();
1247 if (NILP (printflag
))
1251 specbind (Qstandard_output
, tem
);
1253 if (NILP (printflag
))
1254 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1255 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1257 /* This both uses start and checks its type. */
1259 Fnarrow_to_region (make_number (BEGV
), end
);
1260 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1261 !NILP (printflag
), Qnil
, read_function
);
1263 return unbind_to (count
, Qnil
);
1266 #endif /* standalone */
1268 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1269 "Read one Lisp expression as text from STREAM, return as Lisp object.\n\
1270 If STREAM is nil, use the value of `standard-input' (which see).\n\
1271 STREAM or the value of `standard-input' may be:\n\
1272 a buffer (read from point and advance it)\n\
1273 a marker (read from where it points and advance it)\n\
1274 a function (call it with no arguments for each character,\n\
1275 call it with a char as argument to push a char back)\n\
1276 a string (takes text from string, starting at the beginning)\n\
1277 t (read text line using minibuffer and use it).")
1281 extern Lisp_Object
Fread_minibuffer ();
1284 stream
= Vstandard_input
;
1285 if (EQ (stream
, Qt
))
1286 stream
= Qread_char
;
1288 readchar_backlog
= -1;
1289 new_backquote_flag
= 0;
1290 read_objects
= Qnil
;
1293 if (EQ (stream
, Qread_char
))
1294 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1297 if (STRINGP (stream
))
1298 return Fcar (Fread_from_string (stream
, Qnil
, Qnil
));
1300 return read0 (stream
);
1303 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1304 "Read one Lisp expression which is represented as text by STRING.\n\
1305 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\
1306 START and END optionally delimit a substring of STRING from which to read;\n\
1307 they default to 0 and (length STRING) respectively.")
1308 (string
, start
, end
)
1309 Lisp_Object string
, start
, end
;
1311 int startval
, endval
;
1314 CHECK_STRING (string
,0);
1317 endval
= XSTRING (string
)->size
;
1320 CHECK_NUMBER (end
, 2);
1321 endval
= XINT (end
);
1322 if (endval
< 0 || endval
> XSTRING (string
)->size
)
1323 args_out_of_range (string
, end
);
1330 CHECK_NUMBER (start
, 1);
1331 startval
= XINT (start
);
1332 if (startval
< 0 || startval
> endval
)
1333 args_out_of_range (string
, start
);
1336 read_from_string_index
= startval
;
1337 read_from_string_index_byte
= string_char_to_byte (string
, startval
);
1338 read_from_string_limit
= endval
;
1340 new_backquote_flag
= 0;
1341 read_objects
= Qnil
;
1343 tem
= read0 (string
);
1344 return Fcons (tem
, make_number (read_from_string_index
));
1347 /* Use this for recursive reads, in contexts where internal tokens
1352 Lisp_Object readcharfun
;
1354 register Lisp_Object val
;
1357 val
= read1 (readcharfun
, &c
, 0);
1359 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1366 static int read_buffer_size
;
1367 static char *read_buffer
;
1369 /* Read multibyte form and return it as a character. C is a first
1370 byte of multibyte form, and rest of them are read from
1374 read_multibyte (c
, readcharfun
)
1376 Lisp_Object readcharfun
;
1378 /* We need the actual character code of this multibyte
1380 unsigned char str
[MAX_LENGTH_OF_MULTI_BYTE_FORM
];
1384 while ((c
= READCHAR
) >= 0xA0
1385 && len
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1388 return STRING_CHAR (str
, len
);
1391 /* Read a \-escape sequence, assuming we already read the `\'. */
1394 read_escape (readcharfun
, stringp
)
1395 Lisp_Object readcharfun
;
1398 register int c
= READCHAR
;
1402 error ("End of file");
1432 error ("Invalid escape character syntax");
1435 c
= read_escape (readcharfun
, 0);
1436 return c
| meta_modifier
;
1441 error ("Invalid escape character syntax");
1444 c
= read_escape (readcharfun
, 0);
1445 return c
| shift_modifier
;
1450 error ("Invalid escape character syntax");
1453 c
= read_escape (readcharfun
, 0);
1454 return c
| hyper_modifier
;
1459 error ("Invalid escape character syntax");
1462 c
= read_escape (readcharfun
, 0);
1463 return c
| alt_modifier
;
1468 error ("Invalid escape character syntax");
1471 c
= read_escape (readcharfun
, 0);
1472 return c
| super_modifier
;
1477 error ("Invalid escape character syntax");
1481 c
= read_escape (readcharfun
, 0);
1482 if ((c
& 0177) == '?')
1484 /* ASCII control chars are made from letters (both cases),
1485 as well as the non-letters within 0100...0137. */
1486 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1487 return (c
& (037 | ~0177));
1488 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1489 return (c
& (037 | ~0177));
1491 return c
| ctrl_modifier
;
1501 /* An octal escape, as in ANSI C. */
1503 register int i
= c
- '0';
1504 register int count
= 0;
1507 if ((c
= READCHAR
) >= '0' && c
<= '7')
1522 /* A hex escape, as in ANSI C. */
1528 if (c
>= '0' && c
<= '9')
1533 else if ((c
>= 'a' && c
<= 'f')
1534 || (c
>= 'A' && c
<= 'F'))
1537 if (c
>= 'a' && c
<= 'f')
1552 if (BASE_LEADING_CODE_P (c
))
1553 c
= read_multibyte (c
, readcharfun
);
1558 /* If the next token is ')' or ']' or '.', we store that character
1559 in *PCH and the return value is not interesting. Else, we store
1560 zero in *PCH and we read and return one lisp object.
1562 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1565 read1 (readcharfun
, pch
, first_in_list
)
1566 register Lisp_Object readcharfun
;
1571 int uninterned_symbol
= 0;
1578 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1583 return read_list (0, readcharfun
);
1586 return read_vector (readcharfun
, 0);
1603 tmp
= read_vector (readcharfun
, 0);
1604 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1605 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1606 error ("Invalid size char-table");
1607 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1608 XCHAR_TABLE (tmp
)->top
= Qt
;
1617 tmp
= read_vector (readcharfun
, 0);
1618 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1619 error ("Invalid size char-table");
1620 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1621 XCHAR_TABLE (tmp
)->top
= Qnil
;
1624 Fsignal (Qinvalid_read_syntax
,
1625 Fcons (make_string ("#^^", 3), Qnil
));
1627 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1632 length
= read1 (readcharfun
, pch
, first_in_list
);
1636 Lisp_Object tmp
, val
;
1637 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1641 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1642 if (size_in_chars
!= XSTRING (tmp
)->size
1643 /* We used to print 1 char too many
1644 when the number of bits was a multiple of 8.
1645 Accept such input in case it came from an old version. */
1646 && ! (XFASTINT (length
)
1647 == (XSTRING (tmp
)->size
- 1) * BITS_PER_CHAR
))
1648 Fsignal (Qinvalid_read_syntax
,
1649 Fcons (make_string ("#&...", 5), Qnil
));
1651 val
= Fmake_bool_vector (length
, Qnil
);
1652 bcopy (XSTRING (tmp
)->data
, XBOOL_VECTOR (val
)->data
,
1654 /* Clear the extraneous bits in the last byte. */
1655 if (XINT (length
) != size_in_chars
* BITS_PER_CHAR
)
1656 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
1657 &= (1 << (XINT (length
) % BITS_PER_CHAR
)) - 1;
1660 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1665 /* Accept compiled functions at read-time so that we don't have to
1666 build them using function calls. */
1668 tmp
= read_vector (readcharfun
, 1);
1669 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1670 XVECTOR (tmp
)->contents
);
1672 #ifdef USE_TEXT_PROPERTIES
1676 struct gcpro gcpro1
;
1679 /* Read the string itself. */
1680 tmp
= read1 (readcharfun
, &ch
, 0);
1681 if (ch
!= 0 || !STRINGP (tmp
))
1682 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1684 /* Read the intervals and their properties. */
1687 Lisp_Object beg
, end
, plist
;
1689 beg
= read1 (readcharfun
, &ch
, 0);
1693 end
= read1 (readcharfun
, &ch
, 0);
1695 plist
= read1 (readcharfun
, &ch
, 0);
1697 Fsignal (Qinvalid_read_syntax
,
1698 Fcons (build_string ("invalid string property list"),
1700 Fset_text_properties (beg
, end
, plist
, tmp
);
1706 /* #@NUMBER is used to skip NUMBER following characters.
1707 That's used in .elc files to skip over doc strings
1708 and function definitions. */
1713 /* Read a decimal integer. */
1714 while ((c
= READCHAR
) >= 0
1715 && c
>= '0' && c
<= '9')
1723 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
1725 /* If we are supposed to force doc strings into core right now,
1726 record the last string that we skipped,
1727 and record where in the file it comes from. */
1729 /* But first exchange saved_doc_string
1730 with prev_saved_doc_string, so we save two strings. */
1732 char *temp
= saved_doc_string
;
1733 int temp_size
= saved_doc_string_size
;
1734 int temp_pos
= saved_doc_string_position
;
1735 int temp_len
= saved_doc_string_length
;
1737 saved_doc_string
= prev_saved_doc_string
;
1738 saved_doc_string_size
= prev_saved_doc_string_size
;
1739 saved_doc_string_position
= prev_saved_doc_string_position
;
1740 saved_doc_string_length
= prev_saved_doc_string_length
;
1742 prev_saved_doc_string
= temp
;
1743 prev_saved_doc_string_size
= temp_size
;
1744 prev_saved_doc_string_position
= temp_pos
;
1745 prev_saved_doc_string_length
= temp_len
;
1748 if (saved_doc_string_size
== 0)
1750 saved_doc_string_size
= nskip
+ 100;
1751 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
1753 if (nskip
> saved_doc_string_size
)
1755 saved_doc_string_size
= nskip
+ 100;
1756 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
1757 saved_doc_string_size
);
1760 saved_doc_string_position
= ftell (instream
);
1762 /* Copy that many characters into saved_doc_string. */
1763 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1764 saved_doc_string
[i
] = c
= READCHAR
;
1766 saved_doc_string_length
= i
;
1770 /* Skip that many characters. */
1771 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1778 return Vload_file_name
;
1780 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
1781 /* #:foo is the uninterned symbol named foo. */
1784 uninterned_symbol
= 1;
1788 /* Reader forms that can reuse previously read objects. */
1789 if (c
>= '0' && c
<= '9')
1794 /* Read a non-negative integer. */
1795 while (c
>= '0' && c
<= '9')
1801 /* #n=object returns object, but associates it with n for #n#. */
1804 tem
= read0 (readcharfun
);
1805 read_objects
= Fcons (Fcons (make_number (n
), tem
), read_objects
);
1808 /* #n# returns a previously read object. */
1811 tem
= Fassq (make_number (n
), read_objects
);
1814 /* Fall through to error message. */
1816 /* Fall through to error message. */
1820 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1823 while ((c
= READCHAR
) >= 0 && c
!= '\n');
1828 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
1838 new_backquote_flag
= 1;
1839 value
= read0 (readcharfun
);
1840 new_backquote_flag
= 0;
1842 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
1846 if (new_backquote_flag
)
1848 Lisp_Object comma_type
= Qnil
;
1853 comma_type
= Qcomma_at
;
1855 comma_type
= Qcomma_dot
;
1858 if (ch
>= 0) UNREAD (ch
);
1859 comma_type
= Qcomma
;
1862 new_backquote_flag
= 0;
1863 value
= read0 (readcharfun
);
1864 new_backquote_flag
= 1;
1865 return Fcons (comma_type
, Fcons (value
, Qnil
));
1872 register Lisp_Object val
;
1875 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1878 c
= read_escape (readcharfun
, 0);
1879 else if (BASE_LEADING_CODE_P (c
))
1880 c
= read_multibyte (c
, readcharfun
);
1882 return make_number (c
);
1887 register char *p
= read_buffer
;
1888 register char *end
= read_buffer
+ read_buffer_size
;
1890 /* Nonzero if we saw an escape sequence specifying
1891 a multibyte character. */
1892 int force_multibyte
= 0;
1893 /* Nonzero if we saw an escape sequence specifying
1894 a single-byte character. */
1895 int force_singlebyte
= 0;
1899 while ((c
= READCHAR
) >= 0
1902 if (end
- p
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1904 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1905 p
+= new - read_buffer
;
1906 read_buffer
+= new - read_buffer
;
1907 end
= read_buffer
+ read_buffer_size
;
1912 c
= read_escape (readcharfun
, 1);
1914 /* C is -1 if \ newline has just been seen */
1917 if (p
== read_buffer
)
1922 /* If an escape specifies a non-ASCII single-byte character,
1923 this must be a unibyte string. */
1924 if (SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
))
1925 && ! ASCII_BYTE_P (c
))
1926 force_singlebyte
= 1;
1929 if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
)))
1931 unsigned char workbuf
[4];
1932 unsigned char *str
= workbuf
;
1935 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
1937 force_multibyte
= 1;
1939 bcopy (str
, p
, length
);
1944 /* Allow `\C- ' and `\C-?'. */
1945 if (c
== (CHAR_CTL
| ' '))
1947 else if (c
== (CHAR_CTL
| '?'))
1951 /* Move the meta bit to the right place for a string. */
1952 c
= (c
& ~CHAR_META
) | 0x80;
1954 error ("Invalid modifier in string");
1959 return Fsignal (Qend_of_file
, Qnil
);
1961 /* If purifying, and string starts with \ newline,
1962 return zero instead. This is for doc strings
1963 that we are really going to find in etc/DOC.nn.nn */
1964 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
1965 return make_number (0);
1967 if (force_multibyte
)
1968 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1969 else if (force_singlebyte
)
1970 nchars
= p
- read_buffer
;
1971 else if (load_convert_to_unibyte
)
1974 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1975 if (p
- read_buffer
!= nchars
)
1977 string
= make_multibyte_string (read_buffer
, nchars
,
1979 return Fstring_make_unibyte (string
);
1982 else if (EQ (readcharfun
, Qget_file_char
)
1983 || EQ (readcharfun
, Qlambda
))
1984 /* Nowadays, reading directly from a file
1985 is used only for compiled Emacs Lisp files,
1986 and those always use the Emacs internal encoding.
1987 Meanwhile, Qlambda is used for reading dynamic byte code
1988 (compiled with byte-compile-dynamic = t). */
1989 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1991 /* In all other cases, if we read these bytes as
1992 separate characters, treat them as separate characters now. */
1993 nchars
= p
- read_buffer
;
1996 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
1998 || (p
- read_buffer
!= nchars
)));
1999 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2001 || (p
- read_buffer
!= nchars
)));
2006 #ifdef LISP_FLOAT_TYPE
2007 /* If a period is followed by a number, then we should read it
2008 as a floating point number. Otherwise, it denotes a dotted
2010 int next_char
= READCHAR
;
2013 if (! (next_char
>= '0' && next_char
<= '9'))
2020 /* Otherwise, we fall through! Note that the atom-reading loop
2021 below will now loop at least once, assuring that we will not
2022 try to UNREAD two characters in a row. */
2026 if (c
<= 040) goto retry
;
2028 register char *p
= read_buffer
;
2032 register char *end
= read_buffer
+ read_buffer_size
;
2035 && !(c
== '\"' || c
== '\'' || c
== ';' || c
== '?'
2036 || c
== '(' || c
== ')'
2037 #ifndef LISP_FLOAT_TYPE
2038 /* If we have floating-point support, then we need
2039 to allow <digits><dot><digits>. */
2041 #endif /* not LISP_FLOAT_TYPE */
2042 || c
== '[' || c
== ']' || c
== '#'
2045 if (end
- p
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
2047 register char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
2048 p
+= new - read_buffer
;
2049 read_buffer
+= new - read_buffer
;
2050 end
= read_buffer
+ read_buffer_size
;
2058 if (! SINGLE_BYTE_CHAR_P (c
))
2060 unsigned char workbuf
[4];
2061 unsigned char *str
= workbuf
;
2064 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
2066 bcopy (str
, p
, length
);
2077 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
2078 p
+= new - read_buffer
;
2079 read_buffer
+= new - read_buffer
;
2080 /* end = read_buffer + read_buffer_size; */
2087 if (!quoted
&& !uninterned_symbol
)
2090 register Lisp_Object val
;
2092 if (*p1
== '+' || *p1
== '-') p1
++;
2093 /* Is it an integer? */
2096 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2097 #ifdef LISP_FLOAT_TYPE
2098 /* Integers can have trailing decimal points. */
2099 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2102 /* It is an integer. */
2104 #ifdef LISP_FLOAT_TYPE
2108 if (sizeof (int) == sizeof (EMACS_INT
))
2109 XSETINT (val
, atoi (read_buffer
));
2110 else if (sizeof (long) == sizeof (EMACS_INT
))
2111 XSETINT (val
, atol (read_buffer
));
2117 #ifdef LISP_FLOAT_TYPE
2118 if (isfloat_string (read_buffer
))
2120 /* Compute NaN and infinities using 0.0 in a variable,
2121 to cope with compilers that think they are smarter
2127 /* Negate the value ourselves. This treats 0, NaNs,
2128 and infinity properly on IEEE floating point hosts,
2129 and works around a common bug where atof ("-0.0")
2131 int negative
= read_buffer
[0] == '-';
2133 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2134 returns 1, is if the input ends in e+INF or e+NaN. */
2141 value
= zero
/ zero
;
2144 value
= atof (read_buffer
+ negative
);
2148 return make_float (negative
? - value
: value
);
2153 if (uninterned_symbol
)
2154 return make_symbol (read_buffer
);
2156 return intern (read_buffer
);
2161 #ifdef LISP_FLOAT_TYPE
2178 if (*cp
== '+' || *cp
== '-')
2181 if (*cp
>= '0' && *cp
<= '9')
2184 while (*cp
>= '0' && *cp
<= '9')
2192 if (*cp
>= '0' && *cp
<= '9')
2195 while (*cp
>= '0' && *cp
<= '9')
2198 if (*cp
== 'e' || *cp
== 'E')
2202 if (*cp
== '+' || *cp
== '-')
2206 if (*cp
>= '0' && *cp
<= '9')
2209 while (*cp
>= '0' && *cp
<= '9')
2212 else if (cp
== start
)
2214 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2219 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2225 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2226 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2227 || state
== (DOT_CHAR
|TRAIL_INT
)
2228 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2229 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2230 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2232 #endif /* LISP_FLOAT_TYPE */
2235 read_vector (readcharfun
, bytecodeflag
)
2236 Lisp_Object readcharfun
;
2241 register Lisp_Object
*ptr
;
2242 register Lisp_Object tem
, item
, vector
;
2243 register struct Lisp_Cons
*otem
;
2246 tem
= read_list (1, readcharfun
);
2247 len
= Flength (tem
);
2248 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2250 size
= XVECTOR (vector
)->size
;
2251 ptr
= XVECTOR (vector
)->contents
;
2252 for (i
= 0; i
< size
; i
++)
2255 /* If `load-force-doc-strings' is t when reading a lazily-loaded
2256 bytecode object, the docstring containing the bytecode and
2257 constants values must be treated as unibyte and passed to
2258 Fread, to get the actual bytecode string and constants vector. */
2259 if (bytecodeflag
&& load_force_doc_strings
)
2261 if (i
== COMPILED_BYTECODE
)
2263 if (!STRINGP (item
))
2264 error ("invalid byte code");
2266 /* Delay handling the bytecode slot until we know whether
2267 it is lazily-loaded (we can tell by whether the
2268 constants slot is nil). */
2269 ptr
[COMPILED_CONSTANTS
] = item
;
2272 else if (i
== COMPILED_CONSTANTS
)
2274 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
2278 /* Coerce string to unibyte (like string-as-unibyte,
2279 but without generating extra garbage and
2280 guaranteeing no change in the contents). */
2281 XSTRING (bytestr
)->size
= STRING_BYTES (XSTRING (bytestr
));
2282 SET_STRING_BYTES (XSTRING (bytestr
), -1);
2284 item
= Fread (bytestr
);
2286 error ("invalid byte code");
2288 otem
= XCONS (item
);
2289 bytestr
= XCONS (item
)->car
;
2290 item
= XCONS (item
)->cdr
;
2294 /* Now handle the bytecode slot. */
2295 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
2298 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
2306 /* FLAG = 1 means check for ] to terminate rather than ) and .
2307 FLAG = -1 means check for starting with defun
2308 and make structure pure. */
2311 read_list (flag
, readcharfun
)
2313 register Lisp_Object readcharfun
;
2315 /* -1 means check next element for defun,
2316 0 means don't check,
2317 1 means already checked and found defun. */
2318 int defunflag
= flag
< 0 ? -1 : 0;
2319 Lisp_Object val
, tail
;
2320 register Lisp_Object elt
, tem
;
2321 struct gcpro gcpro1
, gcpro2
;
2322 /* 0 is the normal case.
2323 1 means this list is a doc reference; replace it with the number 0.
2324 2 means this list is a doc reference; replace it with the doc string. */
2325 int doc_reference
= 0;
2327 /* Initialize this to 1 if we are reading a list. */
2328 int first_in_list
= flag
<= 0;
2337 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2342 /* While building, if the list starts with #$, treat it specially. */
2343 if (EQ (elt
, Vload_file_name
)
2345 && !NILP (Vpurify_flag
))
2347 if (NILP (Vdoc_file_name
))
2348 /* We have not yet called Snarf-documentation, so assume
2349 this file is described in the DOC-MM.NN file
2350 and Snarf-documentation will fill in the right value later.
2351 For now, replace the whole list with 0. */
2354 /* We have already called Snarf-documentation, so make a relative
2355 file name for this file, so it can be found properly
2356 in the installed Lisp directory.
2357 We don't use Fexpand_file_name because that would make
2358 the directory absolute now. */
2359 elt
= concat2 (build_string ("../lisp/"),
2360 Ffile_name_nondirectory (elt
));
2362 else if (EQ (elt
, Vload_file_name
)
2364 && load_force_doc_strings
)
2373 Fsignal (Qinvalid_read_syntax
,
2374 Fcons (make_string (") or . in a vector", 18), Qnil
));
2382 XCONS (tail
)->cdr
= read0 (readcharfun
);
2384 val
= read0 (readcharfun
);
2385 read1 (readcharfun
, &ch
, 0);
2389 if (doc_reference
== 1)
2390 return make_number (0);
2391 if (doc_reference
== 2)
2393 /* Get a doc string from the file we are loading.
2394 If it's in saved_doc_string, get it from there. */
2395 int pos
= XINT (XCONS (val
)->cdr
);
2396 /* Position is negative for user variables. */
2397 if (pos
< 0) pos
= -pos
;
2398 if (pos
>= saved_doc_string_position
2399 && pos
< (saved_doc_string_position
2400 + saved_doc_string_length
))
2402 int start
= pos
- saved_doc_string_position
;
2405 /* Process quoting with ^A,
2406 and find the end of the string,
2407 which is marked with ^_ (037). */
2408 for (from
= start
, to
= start
;
2409 saved_doc_string
[from
] != 037;)
2411 int c
= saved_doc_string
[from
++];
2414 c
= saved_doc_string
[from
++];
2416 saved_doc_string
[to
++] = c
;
2418 saved_doc_string
[to
++] = 0;
2420 saved_doc_string
[to
++] = 037;
2423 saved_doc_string
[to
++] = c
;
2426 return make_string (saved_doc_string
+ start
,
2429 /* Look in prev_saved_doc_string the same way. */
2430 else if (pos
>= prev_saved_doc_string_position
2431 && pos
< (prev_saved_doc_string_position
2432 + prev_saved_doc_string_length
))
2434 int start
= pos
- prev_saved_doc_string_position
;
2437 /* Process quoting with ^A,
2438 and find the end of the string,
2439 which is marked with ^_ (037). */
2440 for (from
= start
, to
= start
;
2441 prev_saved_doc_string
[from
] != 037;)
2443 int c
= prev_saved_doc_string
[from
++];
2446 c
= prev_saved_doc_string
[from
++];
2448 prev_saved_doc_string
[to
++] = c
;
2450 prev_saved_doc_string
[to
++] = 0;
2452 prev_saved_doc_string
[to
++] = 037;
2455 prev_saved_doc_string
[to
++] = c
;
2458 return make_string (prev_saved_doc_string
+ start
,
2462 return get_doc_string (val
, 0, 0);
2467 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2469 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2471 tem
= (read_pure
&& flag
<= 0
2472 ? pure_cons (elt
, Qnil
)
2473 : Fcons (elt
, Qnil
));
2475 XCONS (tail
)->cdr
= tem
;
2480 defunflag
= EQ (elt
, Qdefun
);
2481 else if (defunflag
> 0)
2486 Lisp_Object Vobarray
;
2487 Lisp_Object initial_obarray
;
2489 /* oblookup stores the bucket number here, for the sake of Funintern. */
2491 int oblookup_last_bucket_number
;
2493 static int hash_string ();
2494 Lisp_Object
oblookup ();
2496 /* Get an error if OBARRAY is not an obarray.
2497 If it is one, return it. */
2500 check_obarray (obarray
)
2501 Lisp_Object obarray
;
2503 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2505 /* If Vobarray is now invalid, force it to be valid. */
2506 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2508 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2513 /* Intern the C string STR: return a symbol with that name,
2514 interned in the current obarray. */
2521 int len
= strlen (str
);
2522 Lisp_Object obarray
;
2525 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2526 obarray
= check_obarray (obarray
);
2527 tem
= oblookup (obarray
, str
, len
, len
);
2530 return Fintern (make_string (str
, len
), obarray
);
2533 /* Create an uninterned symbol with name STR. */
2539 int len
= strlen (str
);
2541 return Fmake_symbol ((!NILP (Vpurify_flag
)
2542 ? make_pure_string (str
, len
, len
, 0)
2543 : make_string (str
, len
)));
2546 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2547 "Return the canonical symbol whose name is STRING.\n\
2548 If there is none, one is created by this function and returned.\n\
2549 A second optional argument specifies the obarray to use;\n\
2550 it defaults to the value of `obarray'.")
2552 Lisp_Object string
, obarray
;
2554 register Lisp_Object tem
, sym
, *ptr
;
2556 if (NILP (obarray
)) obarray
= Vobarray
;
2557 obarray
= check_obarray (obarray
);
2559 CHECK_STRING (string
, 0);
2561 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2562 XSTRING (string
)->size
,
2563 STRING_BYTES (XSTRING (string
)));
2564 if (!INTEGERP (tem
))
2567 if (!NILP (Vpurify_flag
))
2568 string
= Fpurecopy (string
);
2569 sym
= Fmake_symbol (string
);
2570 XSYMBOL (sym
)->obarray
= obarray
;
2572 if ((XSTRING (string
)->data
[0] == ':')
2573 && EQ (obarray
, initial_obarray
))
2574 XSYMBOL (sym
)->value
= sym
;
2576 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2578 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2580 XSYMBOL (sym
)->next
= 0;
2585 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2586 "Return the canonical symbol whose name is STRING, or nil if none exists.\n\
2587 A second optional argument specifies the obarray to use;\n\
2588 it defaults to the value of `obarray'.")
2590 Lisp_Object string
, obarray
;
2592 register Lisp_Object tem
;
2594 if (NILP (obarray
)) obarray
= Vobarray
;
2595 obarray
= check_obarray (obarray
);
2597 CHECK_STRING (string
, 0);
2599 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2600 XSTRING (string
)->size
,
2601 STRING_BYTES (XSTRING (string
)));
2602 if (!INTEGERP (tem
))
2607 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2608 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2609 The value is t if a symbol was found and deleted, nil otherwise.\n\
2610 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2611 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2612 OBARRAY defaults to the value of the variable `obarray'.")
2614 Lisp_Object name
, obarray
;
2616 register Lisp_Object string
, tem
;
2619 if (NILP (obarray
)) obarray
= Vobarray
;
2620 obarray
= check_obarray (obarray
);
2623 XSETSTRING (string
, XSYMBOL (name
)->name
);
2626 CHECK_STRING (name
, 0);
2630 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2631 XSTRING (string
)->size
,
2632 STRING_BYTES (XSTRING (string
)));
2635 /* If arg was a symbol, don't delete anything but that symbol itself. */
2636 if (SYMBOLP (name
) && !EQ (name
, tem
))
2639 XSYMBOL (tem
)->obarray
= Qnil
;
2641 hash
= oblookup_last_bucket_number
;
2643 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
2645 if (XSYMBOL (tem
)->next
)
2646 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
2648 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
2652 Lisp_Object tail
, following
;
2654 for (tail
= XVECTOR (obarray
)->contents
[hash
];
2655 XSYMBOL (tail
)->next
;
2658 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
2659 if (EQ (following
, tem
))
2661 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
2670 /* Return the symbol in OBARRAY whose names matches the string
2671 of SIZE characters (SIZE_BYTE bytes) at PTR.
2672 If there is no such symbol in OBARRAY, return nil.
2674 Also store the bucket number in oblookup_last_bucket_number. */
2677 oblookup (obarray
, ptr
, size
, size_byte
)
2678 Lisp_Object obarray
;
2680 int size
, size_byte
;
2684 register Lisp_Object tail
;
2685 Lisp_Object bucket
, tem
;
2687 if (!VECTORP (obarray
)
2688 || (obsize
= XVECTOR (obarray
)->size
) == 0)
2690 obarray
= check_obarray (obarray
);
2691 obsize
= XVECTOR (obarray
)->size
;
2693 /* This is sometimes needed in the middle of GC. */
2694 obsize
&= ~ARRAY_MARK_FLAG
;
2695 /* Combining next two lines breaks VMS C 2.3. */
2696 hash
= hash_string (ptr
, size_byte
);
2698 bucket
= XVECTOR (obarray
)->contents
[hash
];
2699 oblookup_last_bucket_number
= hash
;
2700 if (XFASTINT (bucket
) == 0)
2702 else if (!SYMBOLP (bucket
))
2703 error ("Bad data in guts of obarray"); /* Like CADR error message */
2705 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
2707 if (STRING_BYTES (XSYMBOL (tail
)->name
) == size_byte
2708 && XSYMBOL (tail
)->name
->size
== size
2709 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size_byte
))
2711 else if (XSYMBOL (tail
)->next
== 0)
2714 XSETINT (tem
, hash
);
2719 hash_string (ptr
, len
)
2723 register unsigned char *p
= ptr
;
2724 register unsigned char *end
= p
+ len
;
2725 register unsigned char c
;
2726 register int hash
= 0;
2731 if (c
>= 0140) c
-= 40;
2732 hash
= ((hash
<<3) + (hash
>>28) + c
);
2734 return hash
& 07777777777;
2738 map_obarray (obarray
, fn
, arg
)
2739 Lisp_Object obarray
;
2740 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
2744 register Lisp_Object tail
;
2745 CHECK_VECTOR (obarray
, 1);
2746 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
2748 tail
= XVECTOR (obarray
)->contents
[i
];
2753 if (XSYMBOL (tail
)->next
== 0)
2755 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
2761 mapatoms_1 (sym
, function
)
2762 Lisp_Object sym
, function
;
2764 call1 (function
, sym
);
2767 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
2768 "Call FUNCTION on every symbol in OBARRAY.\n\
2769 OBARRAY defaults to the value of `obarray'.")
2771 Lisp_Object function
, obarray
;
2775 if (NILP (obarray
)) obarray
= Vobarray
;
2776 obarray
= check_obarray (obarray
);
2778 map_obarray (obarray
, mapatoms_1
, function
);
2782 #define OBARRAY_SIZE 1511
2787 Lisp_Object oblength
;
2791 XSETFASTINT (oblength
, OBARRAY_SIZE
);
2793 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
2794 Vobarray
= Fmake_vector (oblength
, make_number (0));
2795 initial_obarray
= Vobarray
;
2796 staticpro (&initial_obarray
);
2797 /* Intern nil in the obarray */
2798 XSYMBOL (Qnil
)->obarray
= Vobarray
;
2799 /* These locals are to kludge around a pyramid compiler bug. */
2800 hash
= hash_string ("nil", 3);
2801 /* Separate statement here to avoid VAXC bug. */
2802 hash
%= OBARRAY_SIZE
;
2803 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
2806 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
2807 XSYMBOL (Qnil
)->function
= Qunbound
;
2808 XSYMBOL (Qunbound
)->value
= Qunbound
;
2809 XSYMBOL (Qunbound
)->function
= Qunbound
;
2812 XSYMBOL (Qnil
)->value
= Qnil
;
2813 XSYMBOL (Qnil
)->plist
= Qnil
;
2814 XSYMBOL (Qt
)->value
= Qt
;
2816 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
2819 Qvariable_documentation
= intern ("variable-documentation");
2820 staticpro (&Qvariable_documentation
);
2822 read_buffer_size
= 100 + MAX_LENGTH_OF_MULTI_BYTE_FORM
;
2823 read_buffer
= (char *) malloc (read_buffer_size
);
2828 struct Lisp_Subr
*sname
;
2831 sym
= intern (sname
->symbol_name
);
2832 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2835 #ifdef NOTDEF /* use fset in subr.el now */
2837 defalias (sname
, string
)
2838 struct Lisp_Subr
*sname
;
2842 sym
= intern (string
);
2843 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2847 /* Define an "integer variable"; a symbol whose value is forwarded
2848 to a C variable of type int. Sample call: */
2849 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
2851 defvar_int (namestring
, address
)
2855 Lisp_Object sym
, val
;
2856 sym
= intern (namestring
);
2857 val
= allocate_misc ();
2858 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
2859 XINTFWD (val
)->intvar
= address
;
2860 XSYMBOL (sym
)->value
= val
;
2863 /* Similar but define a variable whose value is T if address contains 1,
2864 NIL if address contains 0 */
2866 defvar_bool (namestring
, address
)
2870 Lisp_Object sym
, val
;
2871 sym
= intern (namestring
);
2872 val
= allocate_misc ();
2873 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
2874 XBOOLFWD (val
)->boolvar
= address
;
2875 XSYMBOL (sym
)->value
= val
;
2878 /* Similar but define a variable whose value is the Lisp Object stored
2879 at address. Two versions: with and without gc-marking of the C
2880 variable. The nopro version is used when that variable will be
2881 gc-marked for some other reason, since marking the same slot twice
2882 can cause trouble with strings. */
2884 defvar_lisp_nopro (namestring
, address
)
2886 Lisp_Object
*address
;
2888 Lisp_Object sym
, val
;
2889 sym
= intern (namestring
);
2890 val
= allocate_misc ();
2891 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
2892 XOBJFWD (val
)->objvar
= address
;
2893 XSYMBOL (sym
)->value
= val
;
2897 defvar_lisp (namestring
, address
)
2899 Lisp_Object
*address
;
2901 defvar_lisp_nopro (namestring
, address
);
2902 staticpro (address
);
2907 /* Similar but define a variable whose value is the Lisp Object stored in
2908 the current buffer. address is the address of the slot in the buffer
2909 that is current now. */
2912 defvar_per_buffer (namestring
, address
, type
, doc
)
2914 Lisp_Object
*address
;
2918 Lisp_Object sym
, val
;
2920 extern struct buffer buffer_local_symbols
;
2922 sym
= intern (namestring
);
2923 val
= allocate_misc ();
2924 offset
= (char *)address
- (char *)current_buffer
;
2926 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
2927 XBUFFER_OBJFWD (val
)->offset
= offset
;
2928 XSYMBOL (sym
)->value
= val
;
2929 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_symbols
) = sym
;
2930 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_types
) = type
;
2931 if (XINT (*(Lisp_Object
*)(offset
+ (char *)&buffer_local_flags
)) == 0)
2932 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
2933 slot of buffer_local_flags */
2937 #endif /* standalone */
2939 /* Similar but define a variable whose value is the Lisp Object stored
2940 at a particular offset in the current kboard object. */
2943 defvar_kboard (namestring
, offset
)
2947 Lisp_Object sym
, val
;
2948 sym
= intern (namestring
);
2949 val
= allocate_misc ();
2950 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
2951 XKBOARD_OBJFWD (val
)->offset
= offset
;
2952 XSYMBOL (sym
)->value
= val
;
2955 /* Record the value of load-path used at the start of dumping
2956 so we can see if the site changed it later during dumping. */
2957 static Lisp_Object dump_path
;
2963 int turn_off_warning
= 0;
2965 #ifdef HAVE_SETLOCALE
2966 /* Make sure numbers are parsed as we expect. */
2967 setlocale (LC_NUMERIC
, "C");
2968 #endif /* HAVE_SETLOCALE */
2970 /* Compute the default load-path. */
2972 normal
= PATH_LOADSEARCH
;
2973 Vload_path
= decode_env_path (0, normal
);
2975 if (NILP (Vpurify_flag
))
2976 normal
= PATH_LOADSEARCH
;
2978 normal
= PATH_DUMPLOADSEARCH
;
2980 /* In a dumped Emacs, we normally have to reset the value of
2981 Vload_path from PATH_LOADSEARCH, since the value that was dumped
2982 uses ../lisp, instead of the path of the installed elisp
2983 libraries. However, if it appears that Vload_path was changed
2984 from the default before dumping, don't override that value. */
2987 if (! NILP (Fequal (dump_path
, Vload_path
)))
2989 Vload_path
= decode_env_path (0, normal
);
2990 if (!NILP (Vinstallation_directory
))
2992 /* Add to the path the lisp subdir of the
2993 installation dir, if it exists. */
2994 Lisp_Object tem
, tem1
;
2995 tem
= Fexpand_file_name (build_string ("lisp"),
2996 Vinstallation_directory
);
2997 tem1
= Ffile_exists_p (tem
);
3000 if (NILP (Fmember (tem
, Vload_path
)))
3002 turn_off_warning
= 1;
3003 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3007 /* That dir doesn't exist, so add the build-time
3008 Lisp dirs instead. */
3009 Vload_path
= nconc2 (Vload_path
, dump_path
);
3011 /* Add leim under the installation dir, if it exists. */
3012 tem
= Fexpand_file_name (build_string ("leim"),
3013 Vinstallation_directory
);
3014 tem1
= Ffile_exists_p (tem
);
3017 if (NILP (Fmember (tem
, Vload_path
)))
3018 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3021 /* Add site-list under the installation dir, if it exists. */
3022 tem
= Fexpand_file_name (build_string ("site-lisp"),
3023 Vinstallation_directory
);
3024 tem1
= Ffile_exists_p (tem
);
3027 if (NILP (Fmember (tem
, Vload_path
)))
3028 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3031 /* If Emacs was not built in the source directory,
3032 and it is run from where it was built, add to load-path
3033 the lisp, leim and site-lisp dirs under that directory. */
3035 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
3039 tem
= Fexpand_file_name (build_string ("src/Makefile"),
3040 Vinstallation_directory
);
3041 tem1
= Ffile_exists_p (tem
);
3043 /* Don't be fooled if they moved the entire source tree
3044 AFTER dumping Emacs. If the build directory is indeed
3045 different from the source dir, src/Makefile.in and
3046 src/Makefile will not be found together. */
3047 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
3048 Vinstallation_directory
);
3049 tem2
= Ffile_exists_p (tem
);
3050 if (!NILP (tem1
) && NILP (tem2
))
3052 tem
= Fexpand_file_name (build_string ("lisp"),
3055 if (NILP (Fmember (tem
, Vload_path
)))
3056 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3058 tem
= Fexpand_file_name (build_string ("leim"),
3061 if (NILP (Fmember (tem
, Vload_path
)))
3062 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3064 tem
= Fexpand_file_name (build_string ("site-lisp"),
3067 if (NILP (Fmember (tem
, Vload_path
)))
3068 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
3076 /* NORMAL refers to the lisp dir in the source directory. */
3077 /* We used to add ../lisp at the front here, but
3078 that caused trouble because it was copied from dump_path
3079 into Vload_path, aboe, when Vinstallation_directory was non-nil.
3080 It should be unnecessary. */
3081 Vload_path
= decode_env_path (0, normal
);
3082 dump_path
= Vload_path
;
3087 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
3088 almost never correct, thereby causing a warning to be printed out that
3089 confuses users. Since PATH_LOADSEARCH is always overridden by the
3090 EMACSLOADPATH environment variable below, disable the warning on NT. */
3092 /* Warn if dirs in the *standard* path don't exist. */
3093 if (!turn_off_warning
)
3095 Lisp_Object path_tail
;
3097 for (path_tail
= Vload_path
;
3099 path_tail
= XCONS (path_tail
)->cdr
)
3101 Lisp_Object dirfile
;
3102 dirfile
= Fcar (path_tail
);
3103 if (STRINGP (dirfile
))
3105 dirfile
= Fdirectory_file_name (dirfile
);
3106 if (access (XSTRING (dirfile
)->data
, 0) < 0)
3107 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
3108 XCONS (path_tail
)->car
);
3112 #endif /* WINDOWSNT */
3114 /* If the EMACSLOADPATH environment variable is set, use its value.
3115 This doesn't apply if we're dumping. */
3117 if (NILP (Vpurify_flag
)
3118 && egetenv ("EMACSLOADPATH"))
3120 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
3124 load_in_progress
= 0;
3125 Vload_file_name
= Qnil
;
3127 load_descriptor_list
= Qnil
;
3129 Vstandard_input
= Qt
;
3132 /* Print a warning, using format string FORMAT, that directory DIRNAME
3133 does not exist. Print it on stderr and put it in *Message*. */
3136 dir_warning (format
, dirname
)
3138 Lisp_Object dirname
;
3141 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
3143 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
3144 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
3145 /* Don't log the warning before we've initialized!! */
3147 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
3154 defsubr (&Sread_from_string
);
3156 defsubr (&Sintern_soft
);
3157 defsubr (&Sunintern
);
3159 defsubr (&Seval_buffer
);
3160 defsubr (&Seval_region
);
3161 defsubr (&Sread_char
);
3162 defsubr (&Sread_char_exclusive
);
3163 defsubr (&Sread_event
);
3164 defsubr (&Sget_file_char
);
3165 defsubr (&Smapatoms
);
3167 DEFVAR_LISP ("obarray", &Vobarray
,
3168 "Symbol table for use by `intern' and `read'.\n\
3169 It is a vector whose length ought to be prime for best results.\n\
3170 The vector's contents don't make sense if examined from Lisp programs;\n\
3171 to find all the symbols in an obarray, use `mapatoms'.");
3173 DEFVAR_LISP ("values", &Vvalues
,
3174 "List of values of all expressions which were read, evaluated and printed.\n\
3175 Order is reverse chronological.");
3177 DEFVAR_LISP ("standard-input", &Vstandard_input
,
3178 "Stream for read to get input from.\n\
3179 See documentation of `read' for possible values.");
3180 Vstandard_input
= Qt
;
3182 DEFVAR_LISP ("load-path", &Vload_path
,
3183 "*List of directories to search for files to load.\n\
3184 Each element is a string (directory name) or nil (try default directory).\n\
3185 Initialized based on EMACSLOADPATH environment variable, if any,\n\
3186 otherwise to default specified by file `paths.h' when Emacs was built.");
3188 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
3189 "Non-nil iff inside of `load'.");
3191 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
3192 "An alist of expressions to be evalled when particular files are loaded.\n\
3193 Each element looks like (FILENAME FORMS...).\n\
3194 When `load' is run and the file-name argument is FILENAME,\n\
3195 the FORMS in the corresponding element are executed at the end of loading.\n\n\
3196 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
3197 with no directory specified, since that is how `load' is normally called.\n\
3198 An error in FORMS does not undo the load,\n\
3199 but does prevent execution of the rest of the FORMS.");
3200 Vafter_load_alist
= Qnil
;
3202 DEFVAR_LISP ("load-history", &Vload_history
,
3203 "Alist mapping source file names to symbols and features.\n\
3204 Each alist element is a list that starts with a file name,\n\
3205 except for one element (optional) that starts with nil and describes\n\
3206 definitions evaluated from buffers not visiting files.\n\
3207 The remaining elements of each list are symbols defined as functions\n\
3208 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
3209 Vload_history
= Qnil
;
3211 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
3212 "Full name of file being loaded by `load'.");
3213 Vload_file_name
= Qnil
;
3215 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
3216 "Used for internal purposes by `load'.");
3217 Vcurrent_load_list
= Qnil
;
3219 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
3220 "Function used by `load' and `eval-region' for reading expressions.\n\
3221 The default is nil, which means use the function `read'.");
3222 Vload_read_function
= Qnil
;
3224 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
3225 "Function called in `load' for loading an Emacs lisp source file.\n\
3226 This function is for doing code conversion before reading the source file.\n\
3227 If nil, loading is done without any code conversion.\n\
3228 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
3229 FULLNAME is the full name of FILE.\n\
3230 See `load' for the meaning of the remaining arguments.");
3231 Vload_source_file_function
= Qnil
;
3233 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
3234 "Non-nil means `load' should force-load all dynamic doc strings.\n\
3235 This is useful when the file being loaded is a temporary copy.");
3236 load_force_doc_strings
= 0;
3238 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
3239 "Non-nil means `load' converts strings to unibyte whenever possible.\n\
3240 This is normally used in `load-with-code-conversion'\n\
3241 for loading non-compiled files.");
3242 load_convert_to_unibyte
= 0;
3244 DEFVAR_LISP ("source-directory", &Vsource_directory
,
3245 "Directory in which Emacs sources were found when Emacs was built.\n\
3246 You cannot count on them to still be there!");
3248 = Fexpand_file_name (build_string ("../"),
3249 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3251 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3252 "List of files that were preloaded (when dumping Emacs).");
3253 Vpreloaded_file_list
= Qnil
;
3255 /* Vsource_directory was initialized in init_lread. */
3257 load_descriptor_list
= Qnil
;
3258 staticpro (&load_descriptor_list
);
3260 Qcurrent_load_list
= intern ("current-load-list");
3261 staticpro (&Qcurrent_load_list
);
3263 Qstandard_input
= intern ("standard-input");
3264 staticpro (&Qstandard_input
);
3266 Qread_char
= intern ("read-char");
3267 staticpro (&Qread_char
);
3269 Qget_file_char
= intern ("get-file-char");
3270 staticpro (&Qget_file_char
);
3272 Qbackquote
= intern ("`");
3273 staticpro (&Qbackquote
);
3274 Qcomma
= intern (",");
3275 staticpro (&Qcomma
);
3276 Qcomma_at
= intern (",@");
3277 staticpro (&Qcomma_at
);
3278 Qcomma_dot
= intern (",.");
3279 staticpro (&Qcomma_dot
);
3281 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
3282 staticpro (&Qinhibit_file_name_operation
);
3284 Qascii_character
= intern ("ascii-character");
3285 staticpro (&Qascii_character
);
3287 Qfunction
= intern ("function");
3288 staticpro (&Qfunction
);
3290 Qload
= intern ("load");
3293 Qload_file_name
= intern ("load-file-name");
3294 staticpro (&Qload_file_name
);
3296 staticpro (&dump_path
);
3298 staticpro (&read_objects
);
3299 read_objects
= Qnil
;