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 */
55 #ifdef LISP_FLOAT_TYPE
61 #endif /* LISP_FLOAT_TYPE */
65 #endif /* HAVE_SETLOCALE */
73 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
74 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
75 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
76 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
77 Lisp_Object Qinhibit_file_name_operation
;
79 extern Lisp_Object Qevent_symbol_element_mask
;
80 extern Lisp_Object Qfile_exists_p
;
82 /* non-zero if inside `load' */
85 /* Directory in which the sources were found. */
86 Lisp_Object Vsource_directory
;
88 /* Search path for files to be loaded. */
89 Lisp_Object Vload_path
;
91 /* This is the user-visible association list that maps features to
92 lists of defs in their load files. */
93 Lisp_Object Vload_history
;
95 /* This is used to build the load history. */
96 Lisp_Object Vcurrent_load_list
;
98 /* List of files that were preloaded. */
99 Lisp_Object Vpreloaded_file_list
;
101 /* Name of file actually being read by `load'. */
102 Lisp_Object Vload_file_name
;
104 /* Function to use for reading, in `load' and friends. */
105 Lisp_Object Vload_read_function
;
107 /* The association list of objects read with the #n=object form.
108 Each member of the list has the form (n . object), and is used to
109 look up the object for the corresponding #n# construct.
110 It must be set to nil before all top-level calls to read0. */
111 Lisp_Object read_objects
;
113 /* Nonzero means load should forcibly load all dynamic doc strings. */
114 static int load_force_doc_strings
;
116 /* Function to use for loading an Emacs lisp source file (not
117 compiled) instead of readevalloop. */
118 Lisp_Object Vload_source_file_function
;
120 /* List of descriptors now open for Fload. */
121 static Lisp_Object load_descriptor_list
;
123 /* File for get_file_char to read from. Use by load. */
124 static FILE *instream
;
126 /* When nonzero, read conses in pure space */
127 static int read_pure
;
129 /* For use within read-from-string (this reader is non-reentrant!!) */
130 static int read_from_string_index
;
131 static int read_from_string_limit
;
133 /* Number of bytes left to read in the buffer character
134 that `readchar' has already advanced over. */
135 static int readchar_backlog
;
137 /* This contains the last string skipped with #@, but only on some systems.
138 On other systems we can't put the string here. */
139 static char *saved_doc_string
;
140 /* Length of buffer allocated in saved_doc_string. */
141 static int saved_doc_string_size
;
142 /* Length of actual data in saved_doc_string. */
143 static int saved_doc_string_length
;
144 /* This is the file position that string came from. */
145 static int saved_doc_string_position
;
147 /* Nonzero means inside a new-style backquote
148 with no surrounding parentheses.
149 Fread initializes this to zero, so we need not specbind it
150 or worry about what happens to it when there is an error. */
151 static int new_backquote_flag
;
153 /* Handle unreading and rereading of characters.
154 Write READCHAR to read a character,
155 UNREAD(c) to unread c to be read again.
157 These macros actually read/unread a byte code, multibyte characters
158 are not handled here. The caller should manage them if necessary.
161 #define READCHAR readchar (readcharfun)
162 #define UNREAD(c) unreadchar (readcharfun, c)
165 readchar (readcharfun
)
166 Lisp_Object readcharfun
;
169 register struct buffer
*inbuffer
;
170 register int c
, mpos
;
172 if (BUFFERP (readcharfun
))
174 inbuffer
= XBUFFER (readcharfun
);
176 if (readchar_backlog
== 0)
178 int pt_byte
= BUF_PT_BYTE (inbuffer
);
179 int orig_pt_byte
= pt_byte
;
181 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
184 if (! NILP (inbuffer
->enable_multibyte_characters
))
185 BUF_INC_POS (inbuffer
, pt_byte
);
188 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
189 readchar_backlog
= pt_byte
- orig_pt_byte
;
192 /* We get the address of the byte just passed,
193 which is the last byte of the character.
194 The other bytes in this character are consecutive with it,
195 because the gap can't be in the middle of a character. */
196 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
197 - --readchar_backlog
);
199 if (MARKERP (readcharfun
))
201 inbuffer
= XMARKER (readcharfun
)->buffer
;
203 if (readchar_backlog
== 0)
205 int bytepos
= marker_byte_position (readcharfun
);
206 int orig_bytepos
= bytepos
;
208 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
211 if (! NILP (inbuffer
->enable_multibyte_characters
))
215 XMARKER (readcharfun
)->bytepos
= bytepos
;
216 XMARKER (readcharfun
)->charpos
++;
218 readchar_backlog
= bytepos
- orig_bytepos
;
221 return *(BUF_BEG_ADDR (inbuffer
) + XMARKER (readcharfun
)->bytepos
222 - readchar_backlog
--);
224 if (EQ (readcharfun
, Qget_file_char
))
228 /* Interrupted reads have been observed while reading over the network */
229 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
238 if (STRINGP (readcharfun
))
241 /* This used to be return of a conditional expression,
242 but that truncated -1 to a char on VMS. */
243 if (read_from_string_index
< read_from_string_limit
)
244 c
= XSTRING (readcharfun
)->data
[read_from_string_index
++];
251 tem
= call0 (readcharfun
);
258 /* Unread the character C in the way appropriate for the stream READCHARFUN.
259 If the stream is a user function, call it with the char as argument. */
262 unreadchar (readcharfun
, c
)
263 Lisp_Object readcharfun
;
267 /* Don't back up the pointer if we're unreading the end-of-input mark,
268 since readchar didn't advance it when we read it. */
270 else if (BUFFERP (readcharfun
))
272 if (!SINGLE_BYTE_CHAR_P (c
))
276 struct buffer
*b
= XBUFFER (readcharfun
);
277 int bytepos
= BUF_PT_BYTE (b
);
280 if (! NILP (b
->enable_multibyte_characters
))
281 BUF_DEC_POS (b
, bytepos
);
285 BUF_PT_BYTE (b
) = bytepos
;
288 else if (MARKERP (readcharfun
))
290 if (!SINGLE_BYTE_CHAR_P (c
))
294 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
295 int bytepos
= XMARKER (readcharfun
)->bytepos
;
297 XMARKER (readcharfun
)->charpos
--;
298 if (! NILP (b
->enable_multibyte_characters
))
299 BUF_DEC_POS (b
, bytepos
);
303 XMARKER (readcharfun
)->bytepos
= bytepos
;
306 else if (STRINGP (readcharfun
))
307 read_from_string_index
--;
308 else if (EQ (readcharfun
, Qget_file_char
))
309 ungetc (c
, instream
);
311 call1 (readcharfun
, make_number (c
));
314 static Lisp_Object
read0 (), read1 (), read_list (), read_vector ();
315 static int read_multibyte ();
317 /* get a character from the tty */
319 extern Lisp_Object
read_char ();
321 /* Read input events until we get one that's acceptable for our purposes.
323 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
324 until we get a character we like, and then stuffed into
327 If ASCII_REQUIRED is non-zero, we check function key events to see
328 if the unmodified version of the symbol has a Qascii_character
329 property, and use that character, if present.
331 If ERROR_NONASCII is non-zero, we signal an error if the input we
332 get isn't an ASCII character with modifiers. If it's zero but
333 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
337 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
)
338 int no_switch_frame
, ascii_required
, error_nonascii
;
341 return make_number (getchar ());
343 register Lisp_Object val
, delayed_switch_frame
;
345 delayed_switch_frame
= Qnil
;
347 /* Read until we get an acceptable event. */
349 val
= read_char (0, 0, 0, Qnil
, 0);
354 /* switch-frame events are put off until after the next ASCII
355 character. This is better than signaling an error just because
356 the last characters were typed to a separate minibuffer frame,
357 for example. Eventually, some code which can deal with
358 switch-frame events will read it and process it. */
360 && EVENT_HAS_PARAMETERS (val
)
361 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
363 delayed_switch_frame
= val
;
369 /* Convert certain symbols to their ASCII equivalents. */
372 Lisp_Object tem
, tem1
, tem2
;
373 tem
= Fget (val
, Qevent_symbol_element_mask
);
376 tem1
= Fget (Fcar (tem
), Qascii_character
);
377 /* Merge this symbol's modifier bits
378 with the ASCII equivalent of its basic code. */
380 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
384 /* If we don't have a character now, deal with it appropriately. */
389 Vunread_command_events
= Fcons (val
, Qnil
);
390 error ("Non-character input-event");
397 if (! NILP (delayed_switch_frame
))
398 unread_switch_frame
= delayed_switch_frame
;
404 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 0, 0,
405 "Read a character from the command input (keyboard or macro).\n\
406 It is returned as a number.\n\
407 If the user generates an event which is not a character (i.e. a mouse\n\
408 click or function key event), `read-char' signals an error. As an\n\
409 exception, switch-frame events are put off until non-ASCII events can\n\
411 If you want to read non-character events, or ignore them, call\n\
412 `read-event' or `read-char-exclusive' instead.")
415 return read_filtered_event (1, 1, 1);
418 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 0, 0,
419 "Read an event object from the input stream.")
422 return read_filtered_event (0, 0, 0);
425 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 0, 0,
426 "Read a character from the command input (keyboard or macro).\n\
427 It is returned as a number. Non-character events are ignored.")
430 return read_filtered_event (1, 1, 0);
433 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
434 "Don't use this yourself.")
437 register Lisp_Object val
;
438 XSETINT (val
, getc (instream
));
442 static void readevalloop ();
443 static Lisp_Object
load_unwind ();
444 static Lisp_Object
load_descriptor_unwind ();
446 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
447 "Execute a file of Lisp code named FILE.\n\
448 First try FILE with `.elc' appended, then try with `.el',\n\
449 then try FILE unmodified.\n\
450 This function searches the directories in `load-path'.\n\
451 If optional second arg NOERROR is non-nil,\n\
452 report no error if FILE doesn't exist.\n\
453 Print messages at start and end of loading unless\n\
454 optional third arg NOMESSAGE is non-nil.\n\
455 If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\
456 suffixes `.elc' or `.el' to the specified name FILE.\n\
457 If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\
458 the suffix `.elc' or `.el'; don't accept just FILE unless\n\
459 it ends in one of those suffixes or includes a directory name.\n\
460 Return t if file exists.")
461 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
462 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
464 register FILE *stream
;
465 register int fd
= -1;
466 register Lisp_Object lispstream
;
467 int count
= specpdl_ptr
- specpdl
;
471 /* 1 means we printed the ".el is newer" message. */
473 /* 1 means we are loading a compiled file. */
477 char *dosmode
= "rt";
480 CHECK_STRING (file
, 0);
482 /* If file name is magic, call the handler. */
483 handler
= Ffind_file_name_handler (file
, Qload
);
485 return call5 (handler
, Qload
, file
, noerror
, nomessage
, nosuffix
);
487 /* Do this after the handler to avoid
488 the need to gcpro noerror, nomessage and nosuffix.
489 (Below here, we care only whether they are nil or not.) */
490 file
= Fsubstitute_in_file_name (file
);
492 /* Avoid weird lossage with null string as arg,
493 since it would try to load a directory as a Lisp file */
494 if (XSTRING (file
)->size
> 0)
496 int size
= XSTRING (file
)->size
;
500 if (! NILP (must_suffix
))
502 /* Don't insist on adding a suffix if FILE already ends with one. */
504 && !strcmp (XSTRING (file
)->data
+ size
- 3, ".el"))
507 && !strcmp (XSTRING (file
)->data
+ size
- 4, ".elc"))
509 /* Don't insist on adding a suffix
510 if the argument includes a directory name. */
511 else if (! NILP (Ffile_name_directory (file
)))
515 fd
= openp (Vload_path
, file
,
516 (!NILP (nosuffix
) ? ""
517 : ! NILP (must_suffix
) ? ".elc:.el"
527 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
528 Fcons (file
, Qnil
)));
533 /* If FD is 0, that means openp found a remote file. */
536 handler
= Ffind_file_name_handler (found
, Qload
);
537 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
540 if (!bcmp (&(XSTRING (found
)->data
[XSTRING (found
)->size
- 4]),
551 stat ((char *)XSTRING (found
)->data
, &s1
);
552 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 0;
553 result
= stat ((char *)XSTRING (found
)->data
, &s2
);
554 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
556 /* Make the progress messages mention that source is newer. */
559 /* If we won't print another message, mention this anyway. */
560 if (! NILP (nomessage
))
561 message_with_string ("Source file `%s' newer than byte-compiled file",
564 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 'c';
568 /* We are loading a source file (*.el). */
569 if (!NILP (Vload_source_file_function
))
572 return call4 (Vload_source_file_function
, found
, file
,
573 NILP (noerror
) ? Qnil
: Qt
,
574 NILP (nomessage
) ? Qnil
: Qt
);
580 stream
= fopen ((char *) XSTRING (found
)->data
, dosmode
);
581 #else /* not DOS_NT */
582 stream
= fdopen (fd
, "r");
583 #endif /* not DOS_NT */
587 error ("Failure to create stdio stream for %s", XSTRING (file
)->data
);
590 if (! NILP (Vpurify_flag
))
591 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
593 if (NILP (nomessage
))
596 message_with_string ("Loading %s (source)...", file
, 1);
598 message_with_string ("Loading %s (compiled; note, source file is newer)...",
600 else /* The typical case; compiled file newer than source file. */
601 message_with_string ("Loading %s...", file
, 1);
605 lispstream
= Fcons (Qnil
, Qnil
);
606 XSETFASTINT (XCONS (lispstream
)->car
, (EMACS_UINT
)stream
>> 16);
607 XSETFASTINT (XCONS (lispstream
)->cdr
, (EMACS_UINT
)stream
& 0xffff);
608 record_unwind_protect (load_unwind
, lispstream
);
609 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
610 specbind (Qload_file_name
, found
);
611 specbind (Qinhibit_file_name_operation
, Qnil
);
613 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
615 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0);
616 unbind_to (count
, Qnil
);
618 /* Run any load-hooks for this file. */
619 temp
= Fassoc (file
, Vafter_load_alist
);
621 Fprogn (Fcdr (temp
));
624 if (saved_doc_string
)
625 free (saved_doc_string
);
626 saved_doc_string
= 0;
627 saved_doc_string_size
= 0;
629 if (!noninteractive
&& NILP (nomessage
))
632 message_with_string ("Loading %s (source)...done", file
, 1);
634 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
636 else /* The typical case; compiled file newer than source file. */
637 message_with_string ("Loading %s...done", file
, 1);
643 load_unwind (stream
) /* used as unwind-protect function in load */
646 fclose ((FILE *) (XFASTINT (XCONS (stream
)->car
) << 16
647 | XFASTINT (XCONS (stream
)->cdr
)));
648 if (--load_in_progress
< 0) load_in_progress
= 0;
653 load_descriptor_unwind (oldlist
)
656 load_descriptor_list
= oldlist
;
660 /* Close all descriptors in use for Floads.
661 This is used when starting a subprocess. */
668 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCONS (tail
)->cdr
)
669 close (XFASTINT (XCONS (tail
)->car
));
674 complete_filename_p (pathname
)
675 Lisp_Object pathname
;
677 register unsigned char *s
= XSTRING (pathname
)->data
;
678 return (IS_DIRECTORY_SEP (s
[0])
679 || (XSTRING (pathname
)->size
> 2
680 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
690 /* Search for a file whose name is STR, looking in directories
691 in the Lisp list PATH, and trying suffixes from SUFFIX.
692 SUFFIX is a string containing possible suffixes separated by colons.
693 On success, returns a file descriptor. On failure, returns -1.
695 EXEC_ONLY nonzero means don't open the files,
696 just look for one that is executable. In this case,
697 returns 1 on success.
699 If STOREPTR is nonzero, it points to a slot where the name of
700 the file actually found should be stored as a Lisp string.
701 nil is stored there on failure.
703 If the file we find is remote, return 0
704 but store the found remote file name in *STOREPTR.
705 We do not check for remote files if EXEC_ONLY is nonzero. */
708 openp (path
, str
, suffix
, storeptr
, exec_only
)
709 Lisp_Object path
, str
;
711 Lisp_Object
*storeptr
;
717 register char *fn
= buf
;
720 Lisp_Object filename
;
728 if (complete_filename_p (str
))
731 for (; !NILP (path
); path
= Fcdr (path
))
735 filename
= Fexpand_file_name (str
, Fcar (path
));
736 if (!complete_filename_p (filename
))
737 /* If there are non-absolute elts in PATH (eg ".") */
738 /* Of course, this could conceivably lose if luser sets
739 default-directory to be something non-absolute... */
741 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
742 if (!complete_filename_p (filename
))
743 /* Give up on this path element! */
747 /* Calculate maximum size of any filename made from
748 this path element/specified file name and any possible suffix. */
749 want_size
= strlen (suffix
) + XSTRING (filename
)->size
+ 1;
750 if (fn_size
< want_size
)
751 fn
= (char *) alloca (fn_size
= 100 + want_size
);
755 /* Loop over suffixes. */
758 char *esuffix
= (char *) index (nsuffix
, ':');
759 int lsuffix
= esuffix
? esuffix
- nsuffix
: strlen (nsuffix
);
762 /* Concatenate path element/specified name with the suffix.
763 If the directory starts with /:, remove that. */
764 if (XSTRING (filename
)->size
> 2
765 && XSTRING (filename
)->data
[0] == '/'
766 && XSTRING (filename
)->data
[1] == ':')
768 strncpy (fn
, XSTRING (filename
)->data
+ 2,
769 XSTRING (filename
)->size
- 2);
770 fn
[XSTRING (filename
)->size
- 2] = 0;
774 strncpy (fn
, XSTRING (filename
)->data
, XSTRING (filename
)->size
);
775 fn
[XSTRING (filename
)->size
] = 0;
778 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
779 strncat (fn
, nsuffix
, lsuffix
);
781 /* Check that the file exists and is not a directory. */
785 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
786 if (! NILP (handler
) && ! exec_only
)
791 string
= build_string (fn
);
792 exists
= ! NILP (exec_only
? Ffile_executable_p (string
)
793 : Ffile_readable_p (string
));
795 && ! NILP (Ffile_directory_p (build_string (fn
))))
800 /* We succeeded; return this descriptor and filename. */
802 *storeptr
= build_string (fn
);
809 int exists
= (stat (fn
, &st
) >= 0
810 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
813 /* Check that we can access or open it. */
815 fd
= (access (fn
, X_OK
) == 0) ? 1 : -1;
817 fd
= open (fn
, O_RDONLY
, 0);
821 /* We succeeded; return this descriptor and filename. */
823 *storeptr
= build_string (fn
);
830 /* Advance to next suffix. */
833 nsuffix
+= lsuffix
+ 1;
844 /* Merge the list we've accumulated of globals from the current input source
845 into the load_history variable. The details depend on whether
846 the source has an associated file name or not. */
849 build_load_history (stream
, source
)
853 register Lisp_Object tail
, prev
, newelt
;
854 register Lisp_Object tem
, tem2
;
855 register int foundit
, loading
;
857 /* Don't bother recording anything for preloaded files. */
858 if (!NILP (Vpurify_flag
))
861 loading
= stream
|| !NARROWED
;
863 tail
= Vload_history
;
870 /* Find the feature's previous assoc list... */
871 if (!NILP (Fequal (source
, Fcar (tem
))))
875 /* If we're loading, remove it. */
879 Vload_history
= Fcdr (tail
);
881 Fsetcdr (prev
, Fcdr (tail
));
884 /* Otherwise, cons on new symbols that are not already members. */
887 tem2
= Vcurrent_load_list
;
891 newelt
= Fcar (tem2
);
893 if (NILP (Fmemq (newelt
, tem
)))
894 Fsetcar (tail
, Fcons (Fcar (tem
),
895 Fcons (newelt
, Fcdr (tem
))));
908 /* If we're loading, cons the new assoc onto the front of load-history,
909 the most-recently-loaded position. Also do this if we didn't find
910 an existing member for the current source. */
911 if (loading
|| !foundit
)
912 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
917 unreadpure () /* Used as unwind-protect function in readevalloop */
924 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
)
925 Lisp_Object readcharfun
;
927 Lisp_Object sourcename
;
928 Lisp_Object (*evalfun
) ();
932 register Lisp_Object val
;
933 int count
= specpdl_ptr
- specpdl
;
935 struct buffer
*b
= 0;
937 if (BUFFERP (readcharfun
))
938 b
= XBUFFER (readcharfun
);
939 else if (MARKERP (readcharfun
))
940 b
= XMARKER (readcharfun
)->buffer
;
942 specbind (Qstandard_input
, readcharfun
);
943 specbind (Qcurrent_load_list
, Qnil
);
945 readchar_backlog
= 0;
949 LOADHIST_ATTACH (sourcename
);
953 if (b
!= 0 && NILP (b
->name
))
954 error ("Reading from killed buffer");
960 while ((c
= READCHAR
) != '\n' && c
!= -1);
965 /* Ignore whitespace here, so we can detect eof. */
966 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
969 if (!NILP (Vpurify_flag
) && c
== '(')
971 int count1
= specpdl_ptr
- specpdl
;
972 record_unwind_protect (unreadpure
, Qnil
);
973 val
= read_list (-1, readcharfun
);
974 unbind_to (count1
, Qnil
);
980 if (NILP (Vload_read_function
))
981 val
= read0 (readcharfun
);
983 val
= call1 (Vload_read_function
, readcharfun
);
986 val
= (*evalfun
) (val
);
989 Vvalues
= Fcons (val
, Vvalues
);
990 if (EQ (Vstandard_output
, Qt
))
997 build_load_history (stream
, sourcename
);
1000 unbind_to (count
, Qnil
);
1005 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 3, "",
1006 "Execute the current buffer as Lisp code.\n\
1007 Programs can pass two arguments, BUFFER and PRINTFLAG.\n\
1008 BUFFER is the buffer to evaluate (nil means use current buffer).\n\
1009 PRINTFLAG controls printing of output:\n\
1010 nil means discard it; anything else is stream for print.\n\
1012 If the optional third argument FILENAME is non-nil,\n\
1013 it specifies the file name to use for `load-history'.\n\
1015 This function preserves the position of point.")
1016 (buffer
, printflag
, filename
)
1017 Lisp_Object buffer
, printflag
, filename
;
1019 int count
= specpdl_ptr
- specpdl
;
1020 Lisp_Object tem
, buf
;
1023 buf
= Fcurrent_buffer ();
1025 buf
= Fget_buffer (buffer
);
1027 error ("No such buffer");
1029 if (NILP (printflag
))
1034 if (NILP (filename
))
1035 filename
= XBUFFER (buf
)->filename
;
1037 specbind (Qstandard_output
, tem
);
1038 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1039 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1040 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
));
1041 unbind_to (count
, Qnil
);
1047 XDEFUN ("eval-current-buffer", Feval_current_buffer
, Seval_current_buffer
, 0, 1, "",
1048 "Execute the current buffer as Lisp code.\n\
1049 Programs can pass argument PRINTFLAG which controls printing of output:\n\
1050 nil means discard it; anything else is stream for print.\n\
1052 If there is no error, point does not move. If there is an error,\n\
1053 point remains at the end of the last character read from the buffer.")
1055 Lisp_Object printflag
;
1057 int count
= specpdl_ptr
- specpdl
;
1058 Lisp_Object tem
, cbuf
;
1060 cbuf
= Fcurrent_buffer ()
1062 if (NILP (printflag
))
1066 specbind (Qstandard_output
, tem
);
1067 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1069 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
, !NILP (printflag
));
1070 return unbind_to (count
, Qnil
);
1074 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 3, "r",
1075 "Execute the region as Lisp code.\n\
1076 When called from programs, expects two arguments,\n\
1077 giving starting and ending indices in the current buffer\n\
1078 of the text to be executed.\n\
1079 Programs can pass third argument PRINTFLAG which controls output:\n\
1080 nil means discard it; anything else is stream for printing it.\n\
1082 This function does not move point.")
1083 (start
, end
, printflag
)
1084 Lisp_Object start
, end
, printflag
;
1086 int count
= specpdl_ptr
- specpdl
;
1087 Lisp_Object tem
, cbuf
;
1089 cbuf
= Fcurrent_buffer ();
1091 if (NILP (printflag
))
1095 specbind (Qstandard_output
, tem
);
1097 if (NILP (printflag
))
1098 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1099 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1101 /* This both uses start and checks its type. */
1103 Fnarrow_to_region (make_number (BEGV
), end
);
1104 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
, !NILP (printflag
));
1106 return unbind_to (count
, Qnil
);
1109 #endif /* standalone */
1111 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1112 "Read one Lisp expression as text from STREAM, return as Lisp object.\n\
1113 If STREAM is nil, use the value of `standard-input' (which see).\n\
1114 STREAM or the value of `standard-input' may be:\n\
1115 a buffer (read from point and advance it)\n\
1116 a marker (read from where it points and advance it)\n\
1117 a function (call it with no arguments for each character,\n\
1118 call it with a char as argument to push a char back)\n\
1119 a string (takes text from string, starting at the beginning)\n\
1120 t (read text line using minibuffer and use it).")
1124 extern Lisp_Object
Fread_minibuffer ();
1127 stream
= Vstandard_input
;
1128 if (EQ (stream
, Qt
))
1129 stream
= Qread_char
;
1131 readchar_backlog
= 0;
1132 new_backquote_flag
= 0;
1133 read_objects
= Qnil
;
1136 if (EQ (stream
, Qread_char
))
1137 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1140 if (STRINGP (stream
))
1141 return Fcar (Fread_from_string (stream
, Qnil
, Qnil
));
1143 return read0 (stream
);
1146 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1147 "Read one Lisp expression which is represented as text by STRING.\n\
1148 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\
1149 START and END optionally delimit a substring of STRING from which to read;\n\
1150 they default to 0 and (length STRING) respectively.")
1151 (string
, start
, end
)
1152 Lisp_Object string
, start
, end
;
1154 int startval
, endval
;
1157 CHECK_STRING (string
,0);
1160 endval
= XSTRING (string
)->size_byte
;
1163 CHECK_NUMBER (end
, 2);
1164 endval
= string_char_to_byte (string
, XINT (end
));
1165 if (endval
< 0 || endval
> XSTRING (string
)->size_byte
)
1166 args_out_of_range (string
, end
);
1173 CHECK_NUMBER (start
, 1);
1174 startval
= string_char_to_byte (string
, XINT (start
));
1175 if (startval
< 0 || startval
> endval
)
1176 args_out_of_range (string
, start
);
1179 read_from_string_index
= startval
;
1180 read_from_string_limit
= endval
;
1182 new_backquote_flag
= 0;
1183 read_objects
= Qnil
;
1185 tem
= read0 (string
);
1186 endval
= string_byte_to_char (string
,
1187 read_from_string_index
);
1188 return Fcons (tem
, make_number (endval
));
1191 /* Use this for recursive reads, in contexts where internal tokens
1196 Lisp_Object readcharfun
;
1198 register Lisp_Object val
;
1201 val
= read1 (readcharfun
, &c
, 0);
1203 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1210 static int read_buffer_size
;
1211 static char *read_buffer
;
1213 /* Read multibyte form and return it as a character. C is a first
1214 byte of multibyte form, and rest of them are read from
1218 read_multibyte (c
, readcharfun
)
1220 Lisp_Object readcharfun
;
1222 /* We need the actual character code of this multibyte
1224 unsigned char str
[MAX_LENGTH_OF_MULTI_BYTE_FORM
];
1228 while ((c
= READCHAR
) >= 0xA0
1229 && len
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1232 return STRING_CHAR (str
, len
);
1235 /* Read a \-escape sequence, assuming we already read the `\'. */
1238 read_escape (readcharfun
, stringp
)
1239 Lisp_Object readcharfun
;
1242 register int c
= READCHAR
;
1246 error ("End of file");
1276 error ("Invalid escape character syntax");
1279 c
= read_escape (readcharfun
, 0);
1280 return c
| meta_modifier
;
1285 error ("Invalid escape character syntax");
1288 c
= read_escape (readcharfun
, 0);
1289 return c
| shift_modifier
;
1294 error ("Invalid escape character syntax");
1297 c
= read_escape (readcharfun
, 0);
1298 return c
| hyper_modifier
;
1303 error ("Invalid escape character syntax");
1306 c
= read_escape (readcharfun
, 0);
1307 return c
| alt_modifier
;
1312 error ("Invalid escape character syntax");
1315 c
= read_escape (readcharfun
, 0);
1316 return c
| super_modifier
;
1321 error ("Invalid escape character syntax");
1325 c
= read_escape (readcharfun
, 0);
1326 if ((c
& 0177) == '?')
1328 /* ASCII control chars are made from letters (both cases),
1329 as well as the non-letters within 0100...0137. */
1330 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1331 return (c
& (037 | ~0177));
1332 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1333 return (c
& (037 | ~0177));
1335 return c
| ctrl_modifier
;
1345 /* An octal escape, as in ANSI C. */
1347 register int i
= c
- '0';
1348 register int count
= 0;
1351 if ((c
= READCHAR
) >= '0' && c
<= '7')
1366 /* A hex escape, as in ANSI C. */
1372 if (c
>= '0' && c
<= '9')
1377 else if ((c
>= 'a' && c
<= 'f')
1378 || (c
>= 'A' && c
<= 'F'))
1381 if (c
>= 'a' && c
<= 'f')
1396 if (BASE_LEADING_CODE_P (c
))
1397 c
= read_multibyte (c
, readcharfun
);
1402 /* If the next token is ')' or ']' or '.', we store that character
1403 in *PCH and the return value is not interesting. Else, we store
1404 zero in *PCH and we read and return one lisp object.
1406 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1409 read1 (readcharfun
, pch
, first_in_list
)
1410 register Lisp_Object readcharfun
;
1415 int uninterned_symbol
= 0;
1422 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1427 return read_list (0, readcharfun
);
1430 return read_vector (readcharfun
);
1447 tmp
= read_vector (readcharfun
);
1448 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1449 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1450 error ("Invalid size char-table");
1451 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1452 XCHAR_TABLE (tmp
)->top
= Qt
;
1461 tmp
= read_vector (readcharfun
);
1462 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1463 error ("Invalid size char-table");
1464 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1465 XCHAR_TABLE (tmp
)->top
= Qnil
;
1468 Fsignal (Qinvalid_read_syntax
,
1469 Fcons (make_string ("#^^", 3), Qnil
));
1471 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1476 length
= read1 (readcharfun
, pch
, first_in_list
);
1480 Lisp_Object tmp
, val
;
1481 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1485 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1486 if (size_in_chars
!= XSTRING (tmp
)->size
1487 /* We used to print 1 char too many
1488 when the number of bits was a multiple of 8.
1489 Accept such input in case it came from an old version. */
1490 && ! (XFASTINT (length
)
1491 == (XSTRING (tmp
)->size
- 1) * BITS_PER_CHAR
))
1492 Fsignal (Qinvalid_read_syntax
,
1493 Fcons (make_string ("#&...", 5), Qnil
));
1495 val
= Fmake_bool_vector (length
, Qnil
);
1496 bcopy (XSTRING (tmp
)->data
, XBOOL_VECTOR (val
)->data
,
1500 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1505 /* Accept compiled functions at read-time so that we don't have to
1506 build them using function calls. */
1508 tmp
= read_vector (readcharfun
);
1509 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1510 XVECTOR (tmp
)->contents
);
1512 #ifdef USE_TEXT_PROPERTIES
1516 struct gcpro gcpro1
;
1519 /* Read the string itself. */
1520 tmp
= read1 (readcharfun
, &ch
, 0);
1521 if (ch
!= 0 || !STRINGP (tmp
))
1522 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1524 /* Read the intervals and their properties. */
1527 Lisp_Object beg
, end
, plist
;
1529 beg
= read1 (readcharfun
, &ch
, 0);
1533 end
= read1 (readcharfun
, &ch
, 0);
1535 plist
= read1 (readcharfun
, &ch
, 0);
1537 Fsignal (Qinvalid_read_syntax
,
1538 Fcons (build_string ("invalid string property list"),
1540 Fset_text_properties (beg
, end
, plist
, tmp
);
1546 /* #@NUMBER is used to skip NUMBER following characters.
1547 That's used in .elc files to skip over doc strings
1548 and function definitions. */
1553 /* Read a decimal integer. */
1554 while ((c
= READCHAR
) >= 0
1555 && c
>= '0' && c
<= '9')
1563 #ifndef DOS_NT /* I don't know if filepos works right on MSDOS and Windoze. */
1564 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
1566 /* If we are supposed to force doc strings into core right now,
1567 record the last string that we skipped,
1568 and record where in the file it comes from. */
1569 if (saved_doc_string_size
== 0)
1571 saved_doc_string_size
= nskip
+ 100;
1572 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
1574 if (nskip
> saved_doc_string_size
)
1576 saved_doc_string_size
= nskip
+ 100;
1577 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
1578 saved_doc_string_size
);
1581 saved_doc_string_position
= ftell (instream
);
1583 /* Copy that many characters into saved_doc_string. */
1584 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1585 saved_doc_string
[i
] = c
= READCHAR
;
1587 saved_doc_string_length
= i
;
1590 #endif /* not DOS_NT */
1592 /* Skip that many characters. */
1593 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1600 return Vload_file_name
;
1602 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
1603 /* #:foo is the uninterned symbol named foo. */
1606 uninterned_symbol
= 1;
1610 /* Reader forms that can reuse previously read objects. */
1611 if (c
>= '0' && c
<= '9')
1616 /* Read a non-negative integer. */
1617 while (c
>= '0' && c
<= '9')
1623 /* #n=object returns object, but associates it with n for #n#. */
1626 tem
= read0 (readcharfun
);
1627 read_objects
= Fcons (Fcons (make_number (n
), tem
), read_objects
);
1630 /* #n# returns a previously read object. */
1633 tem
= Fassq (make_number (n
), read_objects
);
1636 /* Fall through to error message. */
1638 /* Fall through to error message. */
1642 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1645 while ((c
= READCHAR
) >= 0 && c
!= '\n');
1650 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
1660 new_backquote_flag
= 1;
1661 value
= read0 (readcharfun
);
1662 new_backquote_flag
= 0;
1664 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
1668 if (new_backquote_flag
)
1670 Lisp_Object comma_type
= Qnil
;
1675 comma_type
= Qcomma_at
;
1677 comma_type
= Qcomma_dot
;
1680 if (ch
>= 0) UNREAD (ch
);
1681 comma_type
= Qcomma
;
1684 new_backquote_flag
= 0;
1685 value
= read0 (readcharfun
);
1686 new_backquote_flag
= 1;
1687 return Fcons (comma_type
, Fcons (value
, Qnil
));
1694 register Lisp_Object val
;
1697 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1700 c
= read_escape (readcharfun
, 0);
1701 else if (BASE_LEADING_CODE_P (c
))
1702 c
= read_multibyte (c
, readcharfun
);
1704 return make_number (c
);
1709 register char *p
= read_buffer
;
1710 register char *end
= read_buffer
+ read_buffer_size
;
1712 /* Nonzero if we saw an escape sequence specifying
1713 a multibyte character. */
1714 int force_multibyte
= 0;
1715 /* Nonzero if we saw an escape sequence specifying
1716 a single-byte character. */
1717 int force_singlebyte
= 0;
1721 while ((c
= READCHAR
) >= 0
1726 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1727 p
+= new - read_buffer
;
1728 read_buffer
+= new - read_buffer
;
1729 end
= read_buffer
+ read_buffer_size
;
1733 c
= read_escape (readcharfun
, 1);
1734 if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
)))
1736 unsigned char workbuf
[4];
1737 unsigned char *str
= workbuf
;
1740 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
1742 force_multibyte
= 1;
1744 if (p
+ length
> end
)
1746 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1747 p
+= new - read_buffer
;
1748 read_buffer
+= new - read_buffer
;
1749 end
= read_buffer
+ read_buffer_size
;
1752 bcopy (str
, p
, length
);
1756 else if (! ASCII_BYTE_P (c
))
1757 force_singlebyte
= 1;
1760 /* c is -1 if \ newline has just been seen */
1763 if (p
== read_buffer
)
1768 /* Allow `\C- ' and `\C-?'. */
1769 if (c
== (CHAR_CTL
| ' '))
1771 else if (c
== (CHAR_CTL
| '?'))
1775 /* Move the meta bit to the right place for a string. */
1776 c
= (c
& ~CHAR_META
) | 0x80;
1778 error ("Invalid modifier in string");
1783 return Fsignal (Qend_of_file
, Qnil
);
1785 /* If purifying, and string starts with \ newline,
1786 return zero instead. This is for doc strings
1787 that we are really going to find in etc/DOC.nn.nn */
1788 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
1789 return make_number (0);
1791 if (force_singlebyte
&& force_multibyte
)
1792 error ("Multibyte and single-byte escapes in one string constant");
1794 if (force_singlebyte
)
1795 nchars
= p
- read_buffer
;
1796 else if (! NILP (buffer_defaults
.enable_multibyte_characters
)
1798 nchars
= chars_in_text (read_buffer
, p
- read_buffer
);
1800 nchars
= p
- read_buffer
;
1803 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
);
1804 return make_multibyte_string (read_buffer
, nchars
, p
- read_buffer
);
1809 #ifdef LISP_FLOAT_TYPE
1810 /* If a period is followed by a number, then we should read it
1811 as a floating point number. Otherwise, it denotes a dotted
1813 int next_char
= READCHAR
;
1816 if (! (next_char
>= '0' && next_char
<= '9'))
1823 /* Otherwise, we fall through! Note that the atom-reading loop
1824 below will now loop at least once, assuring that we will not
1825 try to UNREAD two characters in a row. */
1829 if (c
<= 040) goto retry
;
1831 register char *p
= read_buffer
;
1835 register char *end
= read_buffer
+ read_buffer_size
;
1838 && !(c
== '\"' || c
== '\'' || c
== ';' || c
== '?'
1839 || c
== '(' || c
== ')'
1840 #ifndef LISP_FLOAT_TYPE
1841 /* If we have floating-point support, then we need
1842 to allow <digits><dot><digits>. */
1844 #endif /* not LISP_FLOAT_TYPE */
1845 || c
== '[' || c
== ']' || c
== '#'
1850 register char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1851 p
+= new - read_buffer
;
1852 read_buffer
+= new - read_buffer
;
1853 end
= read_buffer
+ read_buffer_size
;
1868 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1869 p
+= new - read_buffer
;
1870 read_buffer
+= new - read_buffer
;
1871 /* end = read_buffer + read_buffer_size; */
1878 if (!quoted
&& !uninterned_symbol
)
1881 register Lisp_Object val
;
1883 if (*p1
== '+' || *p1
== '-') p1
++;
1884 /* Is it an integer? */
1887 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
1888 #ifdef LISP_FLOAT_TYPE
1889 /* Integers can have trailing decimal points. */
1890 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
1893 /* It is an integer. */
1895 #ifdef LISP_FLOAT_TYPE
1899 if (sizeof (int) == sizeof (EMACS_INT
))
1900 XSETINT (val
, atoi (read_buffer
));
1901 else if (sizeof (long) == sizeof (EMACS_INT
))
1902 XSETINT (val
, atol (read_buffer
));
1908 #ifdef LISP_FLOAT_TYPE
1909 if (isfloat_string (read_buffer
))
1911 double value
= atof (read_buffer
);
1912 if (read_buffer
[0] == '-' && value
== 0.0)
1914 /* The only way this can be true, after isfloat_string
1915 returns 1, is if the input ends in e+INF or e+NaN. */
1916 if (p
[-1] == 'F' || p
[-1] == 'N')
1920 else if (read_buffer
[0] == '-')
1925 return make_float (value
);
1930 if (uninterned_symbol
)
1931 return make_symbol (read_buffer
);
1933 return intern (read_buffer
);
1938 #ifdef LISP_FLOAT_TYPE
1953 if (*cp
== '+' || *cp
== '-')
1956 if (*cp
>= '0' && *cp
<= '9')
1959 while (*cp
>= '0' && *cp
<= '9')
1967 if (*cp
>= '0' && *cp
<= '9')
1970 while (*cp
>= '0' && *cp
<= '9')
1973 if (*cp
== 'e' || *cp
== 'E')
1977 if (*cp
== '+' || *cp
== '-')
1981 if (*cp
>= '0' && *cp
<= '9')
1984 while (*cp
>= '0' && *cp
<= '9')
1987 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
1992 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
1998 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
1999 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2000 || state
== (DOT_CHAR
|TRAIL_INT
)
2001 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2002 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2003 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2005 #endif /* LISP_FLOAT_TYPE */
2008 read_vector (readcharfun
)
2009 Lisp_Object readcharfun
;
2013 register Lisp_Object
*ptr
;
2014 register Lisp_Object tem
, vector
;
2015 register struct Lisp_Cons
*otem
;
2018 tem
= read_list (1, readcharfun
);
2019 len
= Flength (tem
);
2020 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2023 size
= XVECTOR (vector
)->size
;
2024 ptr
= XVECTOR (vector
)->contents
;
2025 for (i
= 0; i
< size
; i
++)
2027 ptr
[i
] = read_pure
? Fpurecopy (Fcar (tem
)) : Fcar (tem
);
2035 /* FLAG = 1 means check for ] to terminate rather than ) and .
2036 FLAG = -1 means check for starting with defun
2037 and make structure pure. */
2040 read_list (flag
, readcharfun
)
2042 register Lisp_Object readcharfun
;
2044 /* -1 means check next element for defun,
2045 0 means don't check,
2046 1 means already checked and found defun. */
2047 int defunflag
= flag
< 0 ? -1 : 0;
2048 Lisp_Object val
, tail
;
2049 register Lisp_Object elt
, tem
;
2050 struct gcpro gcpro1
, gcpro2
;
2051 /* 0 is the normal case.
2052 1 means this list is a doc reference; replace it with the number 0.
2053 2 means this list is a doc reference; replace it with the doc string. */
2054 int doc_reference
= 0;
2056 /* Initialize this to 1 if we are reading a list. */
2057 int first_in_list
= flag
<= 0;
2066 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2071 /* While building, if the list starts with #$, treat it specially. */
2072 if (EQ (elt
, Vload_file_name
)
2074 && !NILP (Vpurify_flag
))
2076 if (NILP (Vdoc_file_name
))
2077 /* We have not yet called Snarf-documentation, so assume
2078 this file is described in the DOC-MM.NN file
2079 and Snarf-documentation will fill in the right value later.
2080 For now, replace the whole list with 0. */
2083 /* We have already called Snarf-documentation, so make a relative
2084 file name for this file, so it can be found properly
2085 in the installed Lisp directory.
2086 We don't use Fexpand_file_name because that would make
2087 the directory absolute now. */
2088 elt
= concat2 (build_string ("../lisp/"),
2089 Ffile_name_nondirectory (elt
));
2091 else if (EQ (elt
, Vload_file_name
)
2093 && load_force_doc_strings
)
2102 Fsignal (Qinvalid_read_syntax
,
2103 Fcons (make_string (") or . in a vector", 18), Qnil
));
2111 XCONS (tail
)->cdr
= read0 (readcharfun
);
2113 val
= read0 (readcharfun
);
2114 read1 (readcharfun
, &ch
, 0);
2118 if (doc_reference
== 1)
2119 return make_number (0);
2120 if (doc_reference
== 2)
2122 /* Get a doc string from the file we are loading.
2123 If it's in saved_doc_string, get it from there. */
2124 int pos
= XINT (XCONS (val
)->cdr
);
2125 if (pos
>= saved_doc_string_position
2126 && pos
< (saved_doc_string_position
2127 + saved_doc_string_length
))
2129 int start
= pos
- saved_doc_string_position
;
2132 /* Process quoting with ^A,
2133 and find the end of the string,
2134 which is marked with ^_ (037). */
2135 for (from
= start
, to
= start
;
2136 saved_doc_string
[from
] != 037;)
2138 int c
= saved_doc_string
[from
++];
2141 c
= saved_doc_string
[from
++];
2143 saved_doc_string
[to
++] = c
;
2145 saved_doc_string
[to
++] = 0;
2147 saved_doc_string
[to
++] = 037;
2150 saved_doc_string
[to
++] = c
;
2153 return make_string (saved_doc_string
+ start
,
2157 return read_doc_string (val
);
2162 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2164 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2166 tem
= (read_pure
&& flag
<= 0
2167 ? pure_cons (elt
, Qnil
)
2168 : Fcons (elt
, Qnil
));
2170 XCONS (tail
)->cdr
= tem
;
2175 defunflag
= EQ (elt
, Qdefun
);
2176 else if (defunflag
> 0)
2181 Lisp_Object Vobarray
;
2182 Lisp_Object initial_obarray
;
2184 /* oblookup stores the bucket number here, for the sake of Funintern. */
2186 int oblookup_last_bucket_number
;
2188 static int hash_string ();
2189 Lisp_Object
oblookup ();
2191 /* Get an error if OBARRAY is not an obarray.
2192 If it is one, return it. */
2195 check_obarray (obarray
)
2196 Lisp_Object obarray
;
2198 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2200 /* If Vobarray is now invalid, force it to be valid. */
2201 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2203 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2208 /* Intern the C string STR: return a symbol with that name,
2209 interned in the current obarray. */
2216 int len
= strlen (str
);
2217 Lisp_Object obarray
;
2220 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2221 obarray
= check_obarray (obarray
);
2222 tem
= oblookup (obarray
, str
, len
, len
);
2225 return Fintern (make_string (str
, len
), obarray
);
2228 /* Create an uninterned symbol with name STR. */
2234 int len
= strlen (str
);
2236 return Fmake_symbol ((!NILP (Vpurify_flag
)
2237 ? make_pure_string (str
, len
, len
)
2238 : make_string (str
, len
)));
2241 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2242 "Return the canonical symbol whose name is STRING.\n\
2243 If there is none, one is created by this function and returned.\n\
2244 A second optional argument specifies the obarray to use;\n\
2245 it defaults to the value of `obarray'.")
2247 Lisp_Object string
, obarray
;
2249 register Lisp_Object tem
, sym
, *ptr
;
2251 if (NILP (obarray
)) obarray
= Vobarray
;
2252 obarray
= check_obarray (obarray
);
2254 CHECK_STRING (string
, 0);
2256 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2257 XSTRING (string
)->size
,
2258 XSTRING (string
)->size_byte
);
2259 if (!INTEGERP (tem
))
2262 if (!NILP (Vpurify_flag
))
2263 string
= Fpurecopy (string
);
2264 sym
= Fmake_symbol (string
);
2265 XSYMBOL (sym
)->obarray
= obarray
;
2267 if (XSTRING (string
)->data
[0] == ':')
2268 XSYMBOL (sym
)->value
= sym
;
2270 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2272 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2274 XSYMBOL (sym
)->next
= 0;
2279 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2280 "Return the canonical symbol whose name is STRING, or nil if none exists.\n\
2281 A second optional argument specifies the obarray to use;\n\
2282 it defaults to the value of `obarray'.")
2284 Lisp_Object string
, obarray
;
2286 register Lisp_Object tem
;
2288 if (NILP (obarray
)) obarray
= Vobarray
;
2289 obarray
= check_obarray (obarray
);
2291 CHECK_STRING (string
, 0);
2293 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2294 XSTRING (string
)->size
,
2295 XSTRING (string
)->size_byte
);
2296 if (!INTEGERP (tem
))
2301 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2302 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2303 The value is t if a symbol was found and deleted, nil otherwise.\n\
2304 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2305 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2306 OBARRAY defaults to the value of the variable `obarray'.")
2308 Lisp_Object name
, obarray
;
2310 register Lisp_Object string
, tem
;
2313 if (NILP (obarray
)) obarray
= Vobarray
;
2314 obarray
= check_obarray (obarray
);
2317 XSETSTRING (string
, XSYMBOL (name
)->name
);
2320 CHECK_STRING (name
, 0);
2324 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2325 XSTRING (string
)->size
,
2326 XSTRING (string
)->size_byte
);
2329 /* If arg was a symbol, don't delete anything but that symbol itself. */
2330 if (SYMBOLP (name
) && !EQ (name
, tem
))
2333 XSYMBOL (tem
)->obarray
= Qnil
;
2335 hash
= oblookup_last_bucket_number
;
2337 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
2339 if (XSYMBOL (tem
)->next
)
2340 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
2342 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
2346 Lisp_Object tail
, following
;
2348 for (tail
= XVECTOR (obarray
)->contents
[hash
];
2349 XSYMBOL (tail
)->next
;
2352 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
2353 if (EQ (following
, tem
))
2355 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
2364 /* Return the symbol in OBARRAY whose names matches the string
2365 of SIZE characters (SIZE_BYTE bytes) at PTR.
2366 If there is no such symbol in OBARRAY, return nil.
2368 Also store the bucket number in oblookup_last_bucket_number. */
2371 oblookup (obarray
, ptr
, size
, size_byte
)
2372 Lisp_Object obarray
;
2374 int size
, size_byte
;
2378 register Lisp_Object tail
;
2379 Lisp_Object bucket
, tem
;
2381 if (!VECTORP (obarray
)
2382 || (obsize
= XVECTOR (obarray
)->size
) == 0)
2384 obarray
= check_obarray (obarray
);
2385 obsize
= XVECTOR (obarray
)->size
;
2387 /* This is sometimes needed in the middle of GC. */
2388 obsize
&= ~ARRAY_MARK_FLAG
;
2389 /* Combining next two lines breaks VMS C 2.3. */
2390 hash
= hash_string (ptr
, size_byte
);
2392 bucket
= XVECTOR (obarray
)->contents
[hash
];
2393 oblookup_last_bucket_number
= hash
;
2394 if (XFASTINT (bucket
) == 0)
2396 else if (!SYMBOLP (bucket
))
2397 error ("Bad data in guts of obarray"); /* Like CADR error message */
2399 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
2401 if (XSYMBOL (tail
)->name
->size_byte
== size_byte
2402 && XSYMBOL (tail
)->name
->size
== size
2403 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size_byte
))
2405 else if (XSYMBOL (tail
)->next
== 0)
2408 XSETINT (tem
, hash
);
2413 hash_string (ptr
, len
)
2417 register unsigned char *p
= ptr
;
2418 register unsigned char *end
= p
+ len
;
2419 register unsigned char c
;
2420 register int hash
= 0;
2425 if (c
>= 0140) c
-= 40;
2426 hash
= ((hash
<<3) + (hash
>>28) + c
);
2428 return hash
& 07777777777;
2432 map_obarray (obarray
, fn
, arg
)
2433 Lisp_Object obarray
;
2434 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
2438 register Lisp_Object tail
;
2439 CHECK_VECTOR (obarray
, 1);
2440 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
2442 tail
= XVECTOR (obarray
)->contents
[i
];
2447 if (XSYMBOL (tail
)->next
== 0)
2449 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
2455 mapatoms_1 (sym
, function
)
2456 Lisp_Object sym
, function
;
2458 call1 (function
, sym
);
2461 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
2462 "Call FUNCTION on every symbol in OBARRAY.\n\
2463 OBARRAY defaults to the value of `obarray'.")
2465 Lisp_Object function
, obarray
;
2469 if (NILP (obarray
)) obarray
= Vobarray
;
2470 obarray
= check_obarray (obarray
);
2472 map_obarray (obarray
, mapatoms_1
, function
);
2476 #define OBARRAY_SIZE 1511
2481 Lisp_Object oblength
;
2485 XSETFASTINT (oblength
, OBARRAY_SIZE
);
2487 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3));
2488 Vobarray
= Fmake_vector (oblength
, make_number (0));
2489 initial_obarray
= Vobarray
;
2490 staticpro (&initial_obarray
);
2491 /* Intern nil in the obarray */
2492 XSYMBOL (Qnil
)->obarray
= Vobarray
;
2493 /* These locals are to kludge around a pyramid compiler bug. */
2494 hash
= hash_string ("nil", 3);
2495 /* Separate statement here to avoid VAXC bug. */
2496 hash
%= OBARRAY_SIZE
;
2497 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
2500 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7));
2501 XSYMBOL (Qnil
)->function
= Qunbound
;
2502 XSYMBOL (Qunbound
)->value
= Qunbound
;
2503 XSYMBOL (Qunbound
)->function
= Qunbound
;
2506 XSYMBOL (Qnil
)->value
= Qnil
;
2507 XSYMBOL (Qnil
)->plist
= Qnil
;
2508 XSYMBOL (Qt
)->value
= Qt
;
2510 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
2513 Qvariable_documentation
= intern ("variable-documentation");
2514 staticpro (&Qvariable_documentation
);
2516 read_buffer_size
= 100;
2517 read_buffer
= (char *) malloc (read_buffer_size
);
2522 struct Lisp_Subr
*sname
;
2525 sym
= intern (sname
->symbol_name
);
2526 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2529 #ifdef NOTDEF /* use fset in subr.el now */
2531 defalias (sname
, string
)
2532 struct Lisp_Subr
*sname
;
2536 sym
= intern (string
);
2537 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2541 /* Define an "integer variable"; a symbol whose value is forwarded
2542 to a C variable of type int. Sample call: */
2543 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
2545 defvar_int (namestring
, address
)
2549 Lisp_Object sym
, val
;
2550 sym
= intern (namestring
);
2551 val
= allocate_misc ();
2552 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
2553 XINTFWD (val
)->intvar
= address
;
2554 XSYMBOL (sym
)->value
= val
;
2557 /* Similar but define a variable whose value is T if address contains 1,
2558 NIL if address contains 0 */
2560 defvar_bool (namestring
, address
)
2564 Lisp_Object sym
, val
;
2565 sym
= intern (namestring
);
2566 val
= allocate_misc ();
2567 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
2568 XBOOLFWD (val
)->boolvar
= address
;
2569 XSYMBOL (sym
)->value
= val
;
2572 /* Similar but define a variable whose value is the Lisp Object stored
2573 at address. Two versions: with and without gc-marking of the C
2574 variable. The nopro version is used when that variable will be
2575 gc-marked for some other reason, since marking the same slot twice
2576 can cause trouble with strings. */
2578 defvar_lisp_nopro (namestring
, address
)
2580 Lisp_Object
*address
;
2582 Lisp_Object sym
, val
;
2583 sym
= intern (namestring
);
2584 val
= allocate_misc ();
2585 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
2586 XOBJFWD (val
)->objvar
= address
;
2587 XSYMBOL (sym
)->value
= val
;
2591 defvar_lisp (namestring
, address
)
2593 Lisp_Object
*address
;
2595 defvar_lisp_nopro (namestring
, address
);
2596 staticpro (address
);
2601 /* Similar but define a variable whose value is the Lisp Object stored in
2602 the current buffer. address is the address of the slot in the buffer
2603 that is current now. */
2606 defvar_per_buffer (namestring
, address
, type
, doc
)
2608 Lisp_Object
*address
;
2612 Lisp_Object sym
, val
;
2614 extern struct buffer buffer_local_symbols
;
2616 sym
= intern (namestring
);
2617 val
= allocate_misc ();
2618 offset
= (char *)address
- (char *)current_buffer
;
2620 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
2621 XBUFFER_OBJFWD (val
)->offset
= offset
;
2622 XSYMBOL (sym
)->value
= val
;
2623 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_symbols
) = sym
;
2624 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_types
) = type
;
2625 if (XINT (*(Lisp_Object
*)(offset
+ (char *)&buffer_local_flags
)) == 0)
2626 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
2627 slot of buffer_local_flags */
2631 #endif /* standalone */
2633 /* Similar but define a variable whose value is the Lisp Object stored
2634 at a particular offset in the current kboard object. */
2637 defvar_kboard (namestring
, offset
)
2641 Lisp_Object sym
, val
;
2642 sym
= intern (namestring
);
2643 val
= allocate_misc ();
2644 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
2645 XKBOARD_OBJFWD (val
)->offset
= offset
;
2646 XSYMBOL (sym
)->value
= val
;
2649 /* Record the value of load-path used at the start of dumping
2650 so we can see if the site changed it later during dumping. */
2651 static Lisp_Object dump_path
;
2657 int turn_off_warning
= 0;
2659 #ifdef HAVE_SETLOCALE
2660 /* Make sure numbers are parsed as we expect. */
2661 setlocale (LC_NUMERIC
, "C");
2662 #endif /* HAVE_SETLOCALE */
2664 /* Compute the default load-path. */
2666 normal
= PATH_LOADSEARCH
;
2667 Vload_path
= decode_env_path (0, normal
);
2669 if (NILP (Vpurify_flag
))
2670 normal
= PATH_LOADSEARCH
;
2672 normal
= PATH_DUMPLOADSEARCH
;
2674 /* In a dumped Emacs, we normally have to reset the value of
2675 Vload_path from PATH_LOADSEARCH, since the value that was dumped
2676 uses ../lisp, instead of the path of the installed elisp
2677 libraries. However, if it appears that Vload_path was changed
2678 from the default before dumping, don't override that value. */
2681 if (! NILP (Fequal (dump_path
, Vload_path
)))
2683 Vload_path
= decode_env_path (0, normal
);
2684 if (!NILP (Vinstallation_directory
))
2686 /* Add to the path the lisp subdir of the
2687 installation dir, if it exists. */
2688 Lisp_Object tem
, tem1
;
2689 tem
= Fexpand_file_name (build_string ("lisp"),
2690 Vinstallation_directory
);
2691 tem1
= Ffile_exists_p (tem
);
2694 if (NILP (Fmember (tem
, Vload_path
)))
2696 turn_off_warning
= 1;
2697 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2701 /* That dir doesn't exist, so add the build-time
2702 Lisp dirs instead. */
2703 Vload_path
= nconc2 (Vload_path
, dump_path
);
2705 /* Add leim under the installation dir, if it exists. */
2706 tem
= Fexpand_file_name (build_string ("leim"),
2707 Vinstallation_directory
);
2708 tem1
= Ffile_exists_p (tem
);
2711 if (NILP (Fmember (tem
, Vload_path
)))
2712 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2715 /* Add site-list under the installation dir, if it exists. */
2716 tem
= Fexpand_file_name (build_string ("site-lisp"),
2717 Vinstallation_directory
);
2718 tem1
= Ffile_exists_p (tem
);
2721 if (NILP (Fmember (tem
, Vload_path
)))
2722 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2725 /* If Emacs was not built in the source directory,
2726 and it is run from where it was built, add to load-path
2727 the lisp, leim and site-lisp dirs under that directory. */
2729 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
2733 tem
= Fexpand_file_name (build_string ("src/Makefile"),
2734 Vinstallation_directory
);
2735 tem1
= Ffile_exists_p (tem
);
2737 /* Don't be fooled if they moved the entire source tree
2738 AFTER dumping Emacs. If the build directory is indeed
2739 different from the source dir, src/Makefile.in and
2740 src/Makefile will not be found together. */
2741 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
2742 Vinstallation_directory
);
2743 tem2
= Ffile_exists_p (tem
);
2744 if (!NILP (tem1
) && NILP (tem2
))
2746 tem
= Fexpand_file_name (build_string ("lisp"),
2749 if (NILP (Fmember (tem
, Vload_path
)))
2750 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2752 tem
= Fexpand_file_name (build_string ("leim"),
2755 if (NILP (Fmember (tem
, Vload_path
)))
2756 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2758 tem
= Fexpand_file_name (build_string ("site-lisp"),
2761 if (NILP (Fmember (tem
, Vload_path
)))
2762 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2770 /* NORMAL refers to the lisp dir in the source directory. */
2771 /* We used to add ../lisp at the front here, but
2772 that caused trouble because it was copied from dump_path
2773 into Vload_path, aboe, when Vinstallation_directory was non-nil.
2774 It should be unnecessary. */
2775 Vload_path
= decode_env_path (0, normal
);
2776 dump_path
= Vload_path
;
2781 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
2782 almost never correct, thereby causing a warning to be printed out that
2783 confuses users. Since PATH_LOADSEARCH is always overridden by the
2784 EMACSLOADPATH environment variable below, disable the warning on NT. */
2786 /* Warn if dirs in the *standard* path don't exist. */
2787 if (!turn_off_warning
)
2789 Lisp_Object path_tail
;
2791 for (path_tail
= Vload_path
;
2793 path_tail
= XCONS (path_tail
)->cdr
)
2795 Lisp_Object dirfile
;
2796 dirfile
= Fcar (path_tail
);
2797 if (STRINGP (dirfile
))
2799 dirfile
= Fdirectory_file_name (dirfile
);
2800 if (access (XSTRING (dirfile
)->data
, 0) < 0)
2801 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
2802 XCONS (path_tail
)->car
);
2806 #endif /* WINDOWSNT */
2808 /* If the EMACSLOADPATH environment variable is set, use its value.
2809 This doesn't apply if we're dumping. */
2811 if (NILP (Vpurify_flag
)
2812 && egetenv ("EMACSLOADPATH"))
2814 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
2818 load_in_progress
= 0;
2819 Vload_file_name
= Qnil
;
2821 load_descriptor_list
= Qnil
;
2824 /* Print a warning, using format string FORMAT, that directory DIRNAME
2825 does not exist. Print it on stderr and put it in *Message*. */
2828 dir_warning (format
, dirname
)
2830 Lisp_Object dirname
;
2833 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
2835 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
2836 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
2837 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
2844 defsubr (&Sread_from_string
);
2846 defsubr (&Sintern_soft
);
2847 defsubr (&Sunintern
);
2849 defsubr (&Seval_buffer
);
2850 defsubr (&Seval_region
);
2851 defsubr (&Sread_char
);
2852 defsubr (&Sread_char_exclusive
);
2853 defsubr (&Sread_event
);
2854 defsubr (&Sget_file_char
);
2855 defsubr (&Smapatoms
);
2857 DEFVAR_LISP ("obarray", &Vobarray
,
2858 "Symbol table for use by `intern' and `read'.\n\
2859 It is a vector whose length ought to be prime for best results.\n\
2860 The vector's contents don't make sense if examined from Lisp programs;\n\
2861 to find all the symbols in an obarray, use `mapatoms'.");
2863 DEFVAR_LISP ("values", &Vvalues
,
2864 "List of values of all expressions which were read, evaluated and printed.\n\
2865 Order is reverse chronological.");
2867 DEFVAR_LISP ("standard-input", &Vstandard_input
,
2868 "Stream for read to get input from.\n\
2869 See documentation of `read' for possible values.");
2870 Vstandard_input
= Qt
;
2872 DEFVAR_LISP ("load-path", &Vload_path
,
2873 "*List of directories to search for files to load.\n\
2874 Each element is a string (directory name) or nil (try default directory).\n\
2875 Initialized based on EMACSLOADPATH environment variable, if any,\n\
2876 otherwise to default specified by file `paths.h' when Emacs was built.");
2878 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
2879 "Non-nil iff inside of `load'.");
2881 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
2882 "An alist of expressions to be evalled when particular files are loaded.\n\
2883 Each element looks like (FILENAME FORMS...).\n\
2884 When `load' is run and the file-name argument is FILENAME,\n\
2885 the FORMS in the corresponding element are executed at the end of loading.\n\n\
2886 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
2887 with no directory specified, since that is how `load' is normally called.\n\
2888 An error in FORMS does not undo the load,\n\
2889 but does prevent execution of the rest of the FORMS.");
2890 Vafter_load_alist
= Qnil
;
2892 DEFVAR_LISP ("load-history", &Vload_history
,
2893 "Alist mapping source file names to symbols and features.\n\
2894 Each alist element is a list that starts with a file name,\n\
2895 except for one element (optional) that starts with nil and describes\n\
2896 definitions evaluated from buffers not visiting files.\n\
2897 The remaining elements of each list are symbols defined as functions\n\
2898 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
2899 Vload_history
= Qnil
;
2901 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
2902 "Full name of file being loaded by `load'.");
2903 Vload_file_name
= Qnil
;
2905 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
2906 "Used for internal purposes by `load'.");
2907 Vcurrent_load_list
= Qnil
;
2909 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
2910 "Function used by `load' and `eval-region' for reading expressions.\n\
2911 The default is nil, which means use the function `read'.");
2912 Vload_read_function
= Qnil
;
2914 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
2915 "Function called in `load' for loading an Emacs lisp source file.\n\
2916 This function is for doing code conversion before reading the source file.\n\
2917 If nil, loading is done without any code conversion.\n\
2918 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
2919 FULLNAME is the full name of FILE.\n\
2920 See `load' for the meaning of the remaining arguments.");
2921 Vload_source_file_function
= Qnil
;
2923 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
2924 "Non-nil means `load' should force-load all dynamic doc strings.\n\
2925 This is useful when the file being loaded is a temporary copy.");
2926 load_force_doc_strings
= 0;
2928 DEFVAR_LISP ("source-directory", &Vsource_directory
,
2929 "Directory in which Emacs sources were found when Emacs was built.\n\
2930 You cannot count on them to still be there!");
2932 = Fexpand_file_name (build_string ("../"),
2933 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
2935 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
2936 "List of files that were preloaded (when dumping Emacs).");
2937 Vpreloaded_file_list
= Qnil
;
2939 /* Vsource_directory was initialized in init_lread. */
2941 load_descriptor_list
= Qnil
;
2942 staticpro (&load_descriptor_list
);
2944 Qcurrent_load_list
= intern ("current-load-list");
2945 staticpro (&Qcurrent_load_list
);
2947 Qstandard_input
= intern ("standard-input");
2948 staticpro (&Qstandard_input
);
2950 Qread_char
= intern ("read-char");
2951 staticpro (&Qread_char
);
2953 Qget_file_char
= intern ("get-file-char");
2954 staticpro (&Qget_file_char
);
2956 Qbackquote
= intern ("`");
2957 staticpro (&Qbackquote
);
2958 Qcomma
= intern (",");
2959 staticpro (&Qcomma
);
2960 Qcomma_at
= intern (",@");
2961 staticpro (&Qcomma_at
);
2962 Qcomma_dot
= intern (",.");
2963 staticpro (&Qcomma_dot
);
2965 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
2966 staticpro (&Qinhibit_file_name_operation
);
2968 Qascii_character
= intern ("ascii-character");
2969 staticpro (&Qascii_character
);
2971 Qfunction
= intern ("function");
2972 staticpro (&Qfunction
);
2974 Qload
= intern ("load");
2977 Qload_file_name
= intern ("load-file-name");
2978 staticpro (&Qload_file_name
);
2980 staticpro (&dump_path
);
2982 staticpro (&read_objects
);
2983 read_objects
= Qnil
;