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
= STRING_BYTES (XSTRING (string
));
1163 CHECK_NUMBER (end
, 2);
1164 endval
= string_char_to_byte (string
, XINT (end
));
1165 if (endval
< 0 || endval
> STRING_BYTES (XSTRING (string
)))
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
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1800 nchars
= p
- read_buffer
;
1803 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
1805 || (p
- read_buffer
!= nchars
)));
1806 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
1808 || (p
- read_buffer
!= nchars
)));
1813 #ifdef LISP_FLOAT_TYPE
1814 /* If a period is followed by a number, then we should read it
1815 as a floating point number. Otherwise, it denotes a dotted
1817 int next_char
= READCHAR
;
1820 if (! (next_char
>= '0' && next_char
<= '9'))
1827 /* Otherwise, we fall through! Note that the atom-reading loop
1828 below will now loop at least once, assuring that we will not
1829 try to UNREAD two characters in a row. */
1833 if (c
<= 040) goto retry
;
1835 register char *p
= read_buffer
;
1839 register char *end
= read_buffer
+ read_buffer_size
;
1842 && !(c
== '\"' || c
== '\'' || c
== ';' || c
== '?'
1843 || c
== '(' || c
== ')'
1844 #ifndef LISP_FLOAT_TYPE
1845 /* If we have floating-point support, then we need
1846 to allow <digits><dot><digits>. */
1848 #endif /* not LISP_FLOAT_TYPE */
1849 || c
== '[' || c
== ']' || c
== '#'
1854 register char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1855 p
+= new - read_buffer
;
1856 read_buffer
+= new - read_buffer
;
1857 end
= read_buffer
+ read_buffer_size
;
1872 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1873 p
+= new - read_buffer
;
1874 read_buffer
+= new - read_buffer
;
1875 /* end = read_buffer + read_buffer_size; */
1882 if (!quoted
&& !uninterned_symbol
)
1885 register Lisp_Object val
;
1887 if (*p1
== '+' || *p1
== '-') p1
++;
1888 /* Is it an integer? */
1891 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
1892 #ifdef LISP_FLOAT_TYPE
1893 /* Integers can have trailing decimal points. */
1894 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
1897 /* It is an integer. */
1899 #ifdef LISP_FLOAT_TYPE
1903 if (sizeof (int) == sizeof (EMACS_INT
))
1904 XSETINT (val
, atoi (read_buffer
));
1905 else if (sizeof (long) == sizeof (EMACS_INT
))
1906 XSETINT (val
, atol (read_buffer
));
1912 #ifdef LISP_FLOAT_TYPE
1913 if (isfloat_string (read_buffer
))
1915 double value
= atof (read_buffer
);
1916 if (read_buffer
[0] == '-' && value
== 0.0)
1918 /* The only way this can be true, after isfloat_string
1919 returns 1, is if the input ends in e+INF or e+NaN. */
1920 if (p
[-1] == 'F' || p
[-1] == 'N')
1924 else if (read_buffer
[0] == '-')
1929 return make_float (value
);
1934 if (uninterned_symbol
)
1935 return make_symbol (read_buffer
);
1937 return intern (read_buffer
);
1942 #ifdef LISP_FLOAT_TYPE
1957 if (*cp
== '+' || *cp
== '-')
1960 if (*cp
>= '0' && *cp
<= '9')
1963 while (*cp
>= '0' && *cp
<= '9')
1971 if (*cp
>= '0' && *cp
<= '9')
1974 while (*cp
>= '0' && *cp
<= '9')
1977 if (*cp
== 'e' || *cp
== 'E')
1981 if (*cp
== '+' || *cp
== '-')
1985 if (*cp
>= '0' && *cp
<= '9')
1988 while (*cp
>= '0' && *cp
<= '9')
1991 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
1996 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2002 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2003 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2004 || state
== (DOT_CHAR
|TRAIL_INT
)
2005 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2006 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2007 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2009 #endif /* LISP_FLOAT_TYPE */
2012 read_vector (readcharfun
)
2013 Lisp_Object readcharfun
;
2017 register Lisp_Object
*ptr
;
2018 register Lisp_Object tem
, vector
;
2019 register struct Lisp_Cons
*otem
;
2022 tem
= read_list (1, readcharfun
);
2023 len
= Flength (tem
);
2024 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2027 size
= XVECTOR (vector
)->size
;
2028 ptr
= XVECTOR (vector
)->contents
;
2029 for (i
= 0; i
< size
; i
++)
2031 ptr
[i
] = read_pure
? Fpurecopy (Fcar (tem
)) : Fcar (tem
);
2039 /* FLAG = 1 means check for ] to terminate rather than ) and .
2040 FLAG = -1 means check for starting with defun
2041 and make structure pure. */
2044 read_list (flag
, readcharfun
)
2046 register Lisp_Object readcharfun
;
2048 /* -1 means check next element for defun,
2049 0 means don't check,
2050 1 means already checked and found defun. */
2051 int defunflag
= flag
< 0 ? -1 : 0;
2052 Lisp_Object val
, tail
;
2053 register Lisp_Object elt
, tem
;
2054 struct gcpro gcpro1
, gcpro2
;
2055 /* 0 is the normal case.
2056 1 means this list is a doc reference; replace it with the number 0.
2057 2 means this list is a doc reference; replace it with the doc string. */
2058 int doc_reference
= 0;
2060 /* Initialize this to 1 if we are reading a list. */
2061 int first_in_list
= flag
<= 0;
2070 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2075 /* While building, if the list starts with #$, treat it specially. */
2076 if (EQ (elt
, Vload_file_name
)
2078 && !NILP (Vpurify_flag
))
2080 if (NILP (Vdoc_file_name
))
2081 /* We have not yet called Snarf-documentation, so assume
2082 this file is described in the DOC-MM.NN file
2083 and Snarf-documentation will fill in the right value later.
2084 For now, replace the whole list with 0. */
2087 /* We have already called Snarf-documentation, so make a relative
2088 file name for this file, so it can be found properly
2089 in the installed Lisp directory.
2090 We don't use Fexpand_file_name because that would make
2091 the directory absolute now. */
2092 elt
= concat2 (build_string ("../lisp/"),
2093 Ffile_name_nondirectory (elt
));
2095 else if (EQ (elt
, Vload_file_name
)
2097 && load_force_doc_strings
)
2106 Fsignal (Qinvalid_read_syntax
,
2107 Fcons (make_string (") or . in a vector", 18), Qnil
));
2115 XCONS (tail
)->cdr
= read0 (readcharfun
);
2117 val
= read0 (readcharfun
);
2118 read1 (readcharfun
, &ch
, 0);
2122 if (doc_reference
== 1)
2123 return make_number (0);
2124 if (doc_reference
== 2)
2126 /* Get a doc string from the file we are loading.
2127 If it's in saved_doc_string, get it from there. */
2128 int pos
= XINT (XCONS (val
)->cdr
);
2129 if (pos
>= saved_doc_string_position
2130 && pos
< (saved_doc_string_position
2131 + saved_doc_string_length
))
2133 int start
= pos
- saved_doc_string_position
;
2136 /* Process quoting with ^A,
2137 and find the end of the string,
2138 which is marked with ^_ (037). */
2139 for (from
= start
, to
= start
;
2140 saved_doc_string
[from
] != 037;)
2142 int c
= saved_doc_string
[from
++];
2145 c
= saved_doc_string
[from
++];
2147 saved_doc_string
[to
++] = c
;
2149 saved_doc_string
[to
++] = 0;
2151 saved_doc_string
[to
++] = 037;
2154 saved_doc_string
[to
++] = c
;
2157 return make_string (saved_doc_string
+ start
,
2161 return read_doc_string (val
);
2166 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2168 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2170 tem
= (read_pure
&& flag
<= 0
2171 ? pure_cons (elt
, Qnil
)
2172 : Fcons (elt
, Qnil
));
2174 XCONS (tail
)->cdr
= tem
;
2179 defunflag
= EQ (elt
, Qdefun
);
2180 else if (defunflag
> 0)
2185 Lisp_Object Vobarray
;
2186 Lisp_Object initial_obarray
;
2188 /* oblookup stores the bucket number here, for the sake of Funintern. */
2190 int oblookup_last_bucket_number
;
2192 static int hash_string ();
2193 Lisp_Object
oblookup ();
2195 /* Get an error if OBARRAY is not an obarray.
2196 If it is one, return it. */
2199 check_obarray (obarray
)
2200 Lisp_Object obarray
;
2202 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2204 /* If Vobarray is now invalid, force it to be valid. */
2205 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2207 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2212 /* Intern the C string STR: return a symbol with that name,
2213 interned in the current obarray. */
2220 int len
= strlen (str
);
2221 Lisp_Object obarray
;
2224 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2225 obarray
= check_obarray (obarray
);
2226 tem
= oblookup (obarray
, str
, len
, len
);
2229 return Fintern (make_string (str
, len
), obarray
);
2232 /* Create an uninterned symbol with name STR. */
2238 int len
= strlen (str
);
2240 return Fmake_symbol ((!NILP (Vpurify_flag
)
2241 ? make_pure_string (str
, len
, len
, 0)
2242 : make_string (str
, len
)));
2245 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2246 "Return the canonical symbol whose name is STRING.\n\
2247 If there is none, one is created by this function and returned.\n\
2248 A second optional argument specifies the obarray to use;\n\
2249 it defaults to the value of `obarray'.")
2251 Lisp_Object string
, obarray
;
2253 register Lisp_Object tem
, sym
, *ptr
;
2255 if (NILP (obarray
)) obarray
= Vobarray
;
2256 obarray
= check_obarray (obarray
);
2258 CHECK_STRING (string
, 0);
2260 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2261 XSTRING (string
)->size
,
2262 STRING_BYTES (XSTRING (string
)));
2263 if (!INTEGERP (tem
))
2266 if (!NILP (Vpurify_flag
))
2267 string
= Fpurecopy (string
);
2268 sym
= Fmake_symbol (string
);
2269 XSYMBOL (sym
)->obarray
= obarray
;
2271 if (XSTRING (string
)->data
[0] == ':')
2272 XSYMBOL (sym
)->value
= sym
;
2274 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2276 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2278 XSYMBOL (sym
)->next
= 0;
2283 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2284 "Return the canonical symbol whose name is STRING, or nil if none exists.\n\
2285 A second optional argument specifies the obarray to use;\n\
2286 it defaults to the value of `obarray'.")
2288 Lisp_Object string
, obarray
;
2290 register Lisp_Object tem
;
2292 if (NILP (obarray
)) obarray
= Vobarray
;
2293 obarray
= check_obarray (obarray
);
2295 CHECK_STRING (string
, 0);
2297 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2298 XSTRING (string
)->size
,
2299 STRING_BYTES (XSTRING (string
)));
2300 if (!INTEGERP (tem
))
2305 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2306 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2307 The value is t if a symbol was found and deleted, nil otherwise.\n\
2308 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2309 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2310 OBARRAY defaults to the value of the variable `obarray'.")
2312 Lisp_Object name
, obarray
;
2314 register Lisp_Object string
, tem
;
2317 if (NILP (obarray
)) obarray
= Vobarray
;
2318 obarray
= check_obarray (obarray
);
2321 XSETSTRING (string
, XSYMBOL (name
)->name
);
2324 CHECK_STRING (name
, 0);
2328 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2329 XSTRING (string
)->size
,
2330 STRING_BYTES (XSTRING (string
)));
2333 /* If arg was a symbol, don't delete anything but that symbol itself. */
2334 if (SYMBOLP (name
) && !EQ (name
, tem
))
2337 XSYMBOL (tem
)->obarray
= Qnil
;
2339 hash
= oblookup_last_bucket_number
;
2341 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
2343 if (XSYMBOL (tem
)->next
)
2344 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
2346 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
2350 Lisp_Object tail
, following
;
2352 for (tail
= XVECTOR (obarray
)->contents
[hash
];
2353 XSYMBOL (tail
)->next
;
2356 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
2357 if (EQ (following
, tem
))
2359 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
2368 /* Return the symbol in OBARRAY whose names matches the string
2369 of SIZE characters (SIZE_BYTE bytes) at PTR.
2370 If there is no such symbol in OBARRAY, return nil.
2372 Also store the bucket number in oblookup_last_bucket_number. */
2375 oblookup (obarray
, ptr
, size
, size_byte
)
2376 Lisp_Object obarray
;
2378 int size
, size_byte
;
2382 register Lisp_Object tail
;
2383 Lisp_Object bucket
, tem
;
2385 if (!VECTORP (obarray
)
2386 || (obsize
= XVECTOR (obarray
)->size
) == 0)
2388 obarray
= check_obarray (obarray
);
2389 obsize
= XVECTOR (obarray
)->size
;
2391 /* This is sometimes needed in the middle of GC. */
2392 obsize
&= ~ARRAY_MARK_FLAG
;
2393 /* Combining next two lines breaks VMS C 2.3. */
2394 hash
= hash_string (ptr
, size_byte
);
2396 bucket
= XVECTOR (obarray
)->contents
[hash
];
2397 oblookup_last_bucket_number
= hash
;
2398 if (XFASTINT (bucket
) == 0)
2400 else if (!SYMBOLP (bucket
))
2401 error ("Bad data in guts of obarray"); /* Like CADR error message */
2403 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
2405 if (STRING_BYTES (XSYMBOL (tail
)->name
) == size_byte
2406 && XSYMBOL (tail
)->name
->size
== size
2407 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size_byte
))
2409 else if (XSYMBOL (tail
)->next
== 0)
2412 XSETINT (tem
, hash
);
2417 hash_string (ptr
, len
)
2421 register unsigned char *p
= ptr
;
2422 register unsigned char *end
= p
+ len
;
2423 register unsigned char c
;
2424 register int hash
= 0;
2429 if (c
>= 0140) c
-= 40;
2430 hash
= ((hash
<<3) + (hash
>>28) + c
);
2432 return hash
& 07777777777;
2436 map_obarray (obarray
, fn
, arg
)
2437 Lisp_Object obarray
;
2438 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
2442 register Lisp_Object tail
;
2443 CHECK_VECTOR (obarray
, 1);
2444 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
2446 tail
= XVECTOR (obarray
)->contents
[i
];
2451 if (XSYMBOL (tail
)->next
== 0)
2453 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
2459 mapatoms_1 (sym
, function
)
2460 Lisp_Object sym
, function
;
2462 call1 (function
, sym
);
2465 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
2466 "Call FUNCTION on every symbol in OBARRAY.\n\
2467 OBARRAY defaults to the value of `obarray'.")
2469 Lisp_Object function
, obarray
;
2473 if (NILP (obarray
)) obarray
= Vobarray
;
2474 obarray
= check_obarray (obarray
);
2476 map_obarray (obarray
, mapatoms_1
, function
);
2480 #define OBARRAY_SIZE 1511
2485 Lisp_Object oblength
;
2489 XSETFASTINT (oblength
, OBARRAY_SIZE
);
2491 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
2492 Vobarray
= Fmake_vector (oblength
, make_number (0));
2493 initial_obarray
= Vobarray
;
2494 staticpro (&initial_obarray
);
2495 /* Intern nil in the obarray */
2496 XSYMBOL (Qnil
)->obarray
= Vobarray
;
2497 /* These locals are to kludge around a pyramid compiler bug. */
2498 hash
= hash_string ("nil", 3);
2499 /* Separate statement here to avoid VAXC bug. */
2500 hash
%= OBARRAY_SIZE
;
2501 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
2504 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
2505 XSYMBOL (Qnil
)->function
= Qunbound
;
2506 XSYMBOL (Qunbound
)->value
= Qunbound
;
2507 XSYMBOL (Qunbound
)->function
= Qunbound
;
2510 XSYMBOL (Qnil
)->value
= Qnil
;
2511 XSYMBOL (Qnil
)->plist
= Qnil
;
2512 XSYMBOL (Qt
)->value
= Qt
;
2514 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
2517 Qvariable_documentation
= intern ("variable-documentation");
2518 staticpro (&Qvariable_documentation
);
2520 read_buffer_size
= 100;
2521 read_buffer
= (char *) malloc (read_buffer_size
);
2526 struct Lisp_Subr
*sname
;
2529 sym
= intern (sname
->symbol_name
);
2530 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2533 #ifdef NOTDEF /* use fset in subr.el now */
2535 defalias (sname
, string
)
2536 struct Lisp_Subr
*sname
;
2540 sym
= intern (string
);
2541 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2545 /* Define an "integer variable"; a symbol whose value is forwarded
2546 to a C variable of type int. Sample call: */
2547 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
2549 defvar_int (namestring
, address
)
2553 Lisp_Object sym
, val
;
2554 sym
= intern (namestring
);
2555 val
= allocate_misc ();
2556 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
2557 XINTFWD (val
)->intvar
= address
;
2558 XSYMBOL (sym
)->value
= val
;
2561 /* Similar but define a variable whose value is T if address contains 1,
2562 NIL if address contains 0 */
2564 defvar_bool (namestring
, address
)
2568 Lisp_Object sym
, val
;
2569 sym
= intern (namestring
);
2570 val
= allocate_misc ();
2571 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
2572 XBOOLFWD (val
)->boolvar
= address
;
2573 XSYMBOL (sym
)->value
= val
;
2576 /* Similar but define a variable whose value is the Lisp Object stored
2577 at address. Two versions: with and without gc-marking of the C
2578 variable. The nopro version is used when that variable will be
2579 gc-marked for some other reason, since marking the same slot twice
2580 can cause trouble with strings. */
2582 defvar_lisp_nopro (namestring
, address
)
2584 Lisp_Object
*address
;
2586 Lisp_Object sym
, val
;
2587 sym
= intern (namestring
);
2588 val
= allocate_misc ();
2589 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
2590 XOBJFWD (val
)->objvar
= address
;
2591 XSYMBOL (sym
)->value
= val
;
2595 defvar_lisp (namestring
, address
)
2597 Lisp_Object
*address
;
2599 defvar_lisp_nopro (namestring
, address
);
2600 staticpro (address
);
2605 /* Similar but define a variable whose value is the Lisp Object stored in
2606 the current buffer. address is the address of the slot in the buffer
2607 that is current now. */
2610 defvar_per_buffer (namestring
, address
, type
, doc
)
2612 Lisp_Object
*address
;
2616 Lisp_Object sym
, val
;
2618 extern struct buffer buffer_local_symbols
;
2620 sym
= intern (namestring
);
2621 val
= allocate_misc ();
2622 offset
= (char *)address
- (char *)current_buffer
;
2624 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
2625 XBUFFER_OBJFWD (val
)->offset
= offset
;
2626 XSYMBOL (sym
)->value
= val
;
2627 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_symbols
) = sym
;
2628 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_types
) = type
;
2629 if (XINT (*(Lisp_Object
*)(offset
+ (char *)&buffer_local_flags
)) == 0)
2630 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
2631 slot of buffer_local_flags */
2635 #endif /* standalone */
2637 /* Similar but define a variable whose value is the Lisp Object stored
2638 at a particular offset in the current kboard object. */
2641 defvar_kboard (namestring
, offset
)
2645 Lisp_Object sym
, val
;
2646 sym
= intern (namestring
);
2647 val
= allocate_misc ();
2648 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
2649 XKBOARD_OBJFWD (val
)->offset
= offset
;
2650 XSYMBOL (sym
)->value
= val
;
2653 /* Record the value of load-path used at the start of dumping
2654 so we can see if the site changed it later during dumping. */
2655 static Lisp_Object dump_path
;
2661 int turn_off_warning
= 0;
2663 #ifdef HAVE_SETLOCALE
2664 /* Make sure numbers are parsed as we expect. */
2665 setlocale (LC_NUMERIC
, "C");
2666 #endif /* HAVE_SETLOCALE */
2668 /* Compute the default load-path. */
2670 normal
= PATH_LOADSEARCH
;
2671 Vload_path
= decode_env_path (0, normal
);
2673 if (NILP (Vpurify_flag
))
2674 normal
= PATH_LOADSEARCH
;
2676 normal
= PATH_DUMPLOADSEARCH
;
2678 /* In a dumped Emacs, we normally have to reset the value of
2679 Vload_path from PATH_LOADSEARCH, since the value that was dumped
2680 uses ../lisp, instead of the path of the installed elisp
2681 libraries. However, if it appears that Vload_path was changed
2682 from the default before dumping, don't override that value. */
2685 if (! NILP (Fequal (dump_path
, Vload_path
)))
2687 Vload_path
= decode_env_path (0, normal
);
2688 if (!NILP (Vinstallation_directory
))
2690 /* Add to the path the lisp subdir of the
2691 installation dir, if it exists. */
2692 Lisp_Object tem
, tem1
;
2693 tem
= Fexpand_file_name (build_string ("lisp"),
2694 Vinstallation_directory
);
2695 tem1
= Ffile_exists_p (tem
);
2698 if (NILP (Fmember (tem
, Vload_path
)))
2700 turn_off_warning
= 1;
2701 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2705 /* That dir doesn't exist, so add the build-time
2706 Lisp dirs instead. */
2707 Vload_path
= nconc2 (Vload_path
, dump_path
);
2709 /* Add leim under the installation dir, if it exists. */
2710 tem
= Fexpand_file_name (build_string ("leim"),
2711 Vinstallation_directory
);
2712 tem1
= Ffile_exists_p (tem
);
2715 if (NILP (Fmember (tem
, Vload_path
)))
2716 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2719 /* Add site-list under the installation dir, if it exists. */
2720 tem
= Fexpand_file_name (build_string ("site-lisp"),
2721 Vinstallation_directory
);
2722 tem1
= Ffile_exists_p (tem
);
2725 if (NILP (Fmember (tem
, Vload_path
)))
2726 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2729 /* If Emacs was not built in the source directory,
2730 and it is run from where it was built, add to load-path
2731 the lisp, leim and site-lisp dirs under that directory. */
2733 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
2737 tem
= Fexpand_file_name (build_string ("src/Makefile"),
2738 Vinstallation_directory
);
2739 tem1
= Ffile_exists_p (tem
);
2741 /* Don't be fooled if they moved the entire source tree
2742 AFTER dumping Emacs. If the build directory is indeed
2743 different from the source dir, src/Makefile.in and
2744 src/Makefile will not be found together. */
2745 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
2746 Vinstallation_directory
);
2747 tem2
= Ffile_exists_p (tem
);
2748 if (!NILP (tem1
) && NILP (tem2
))
2750 tem
= Fexpand_file_name (build_string ("lisp"),
2753 if (NILP (Fmember (tem
, Vload_path
)))
2754 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2756 tem
= Fexpand_file_name (build_string ("leim"),
2759 if (NILP (Fmember (tem
, Vload_path
)))
2760 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2762 tem
= Fexpand_file_name (build_string ("site-lisp"),
2765 if (NILP (Fmember (tem
, Vload_path
)))
2766 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2774 /* NORMAL refers to the lisp dir in the source directory. */
2775 /* We used to add ../lisp at the front here, but
2776 that caused trouble because it was copied from dump_path
2777 into Vload_path, aboe, when Vinstallation_directory was non-nil.
2778 It should be unnecessary. */
2779 Vload_path
= decode_env_path (0, normal
);
2780 dump_path
= Vload_path
;
2785 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
2786 almost never correct, thereby causing a warning to be printed out that
2787 confuses users. Since PATH_LOADSEARCH is always overridden by the
2788 EMACSLOADPATH environment variable below, disable the warning on NT. */
2790 /* Warn if dirs in the *standard* path don't exist. */
2791 if (!turn_off_warning
)
2793 Lisp_Object path_tail
;
2795 for (path_tail
= Vload_path
;
2797 path_tail
= XCONS (path_tail
)->cdr
)
2799 Lisp_Object dirfile
;
2800 dirfile
= Fcar (path_tail
);
2801 if (STRINGP (dirfile
))
2803 dirfile
= Fdirectory_file_name (dirfile
);
2804 if (access (XSTRING (dirfile
)->data
, 0) < 0)
2805 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
2806 XCONS (path_tail
)->car
);
2810 #endif /* WINDOWSNT */
2812 /* If the EMACSLOADPATH environment variable is set, use its value.
2813 This doesn't apply if we're dumping. */
2815 if (NILP (Vpurify_flag
)
2816 && egetenv ("EMACSLOADPATH"))
2818 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
2822 load_in_progress
= 0;
2823 Vload_file_name
= Qnil
;
2825 load_descriptor_list
= Qnil
;
2827 Vstandard_input
= Qt
;
2830 /* Print a warning, using format string FORMAT, that directory DIRNAME
2831 does not exist. Print it on stderr and put it in *Message*. */
2834 dir_warning (format
, dirname
)
2836 Lisp_Object dirname
;
2839 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
2841 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
2842 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
2843 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
2850 defsubr (&Sread_from_string
);
2852 defsubr (&Sintern_soft
);
2853 defsubr (&Sunintern
);
2855 defsubr (&Seval_buffer
);
2856 defsubr (&Seval_region
);
2857 defsubr (&Sread_char
);
2858 defsubr (&Sread_char_exclusive
);
2859 defsubr (&Sread_event
);
2860 defsubr (&Sget_file_char
);
2861 defsubr (&Smapatoms
);
2863 DEFVAR_LISP ("obarray", &Vobarray
,
2864 "Symbol table for use by `intern' and `read'.\n\
2865 It is a vector whose length ought to be prime for best results.\n\
2866 The vector's contents don't make sense if examined from Lisp programs;\n\
2867 to find all the symbols in an obarray, use `mapatoms'.");
2869 DEFVAR_LISP ("values", &Vvalues
,
2870 "List of values of all expressions which were read, evaluated and printed.\n\
2871 Order is reverse chronological.");
2873 DEFVAR_LISP ("standard-input", &Vstandard_input
,
2874 "Stream for read to get input from.\n\
2875 See documentation of `read' for possible values.");
2876 Vstandard_input
= Qt
;
2878 DEFVAR_LISP ("load-path", &Vload_path
,
2879 "*List of directories to search for files to load.\n\
2880 Each element is a string (directory name) or nil (try default directory).\n\
2881 Initialized based on EMACSLOADPATH environment variable, if any,\n\
2882 otherwise to default specified by file `paths.h' when Emacs was built.");
2884 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
2885 "Non-nil iff inside of `load'.");
2887 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
2888 "An alist of expressions to be evalled when particular files are loaded.\n\
2889 Each element looks like (FILENAME FORMS...).\n\
2890 When `load' is run and the file-name argument is FILENAME,\n\
2891 the FORMS in the corresponding element are executed at the end of loading.\n\n\
2892 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
2893 with no directory specified, since that is how `load' is normally called.\n\
2894 An error in FORMS does not undo the load,\n\
2895 but does prevent execution of the rest of the FORMS.");
2896 Vafter_load_alist
= Qnil
;
2898 DEFVAR_LISP ("load-history", &Vload_history
,
2899 "Alist mapping source file names to symbols and features.\n\
2900 Each alist element is a list that starts with a file name,\n\
2901 except for one element (optional) that starts with nil and describes\n\
2902 definitions evaluated from buffers not visiting files.\n\
2903 The remaining elements of each list are symbols defined as functions\n\
2904 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
2905 Vload_history
= Qnil
;
2907 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
2908 "Full name of file being loaded by `load'.");
2909 Vload_file_name
= Qnil
;
2911 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
2912 "Used for internal purposes by `load'.");
2913 Vcurrent_load_list
= Qnil
;
2915 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
2916 "Function used by `load' and `eval-region' for reading expressions.\n\
2917 The default is nil, which means use the function `read'.");
2918 Vload_read_function
= Qnil
;
2920 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
2921 "Function called in `load' for loading an Emacs lisp source file.\n\
2922 This function is for doing code conversion before reading the source file.\n\
2923 If nil, loading is done without any code conversion.\n\
2924 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
2925 FULLNAME is the full name of FILE.\n\
2926 See `load' for the meaning of the remaining arguments.");
2927 Vload_source_file_function
= Qnil
;
2929 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
2930 "Non-nil means `load' should force-load all dynamic doc strings.\n\
2931 This is useful when the file being loaded is a temporary copy.");
2932 load_force_doc_strings
= 0;
2934 DEFVAR_LISP ("source-directory", &Vsource_directory
,
2935 "Directory in which Emacs sources were found when Emacs was built.\n\
2936 You cannot count on them to still be there!");
2938 = Fexpand_file_name (build_string ("../"),
2939 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
2941 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
2942 "List of files that were preloaded (when dumping Emacs).");
2943 Vpreloaded_file_list
= Qnil
;
2945 /* Vsource_directory was initialized in init_lread. */
2947 load_descriptor_list
= Qnil
;
2948 staticpro (&load_descriptor_list
);
2950 Qcurrent_load_list
= intern ("current-load-list");
2951 staticpro (&Qcurrent_load_list
);
2953 Qstandard_input
= intern ("standard-input");
2954 staticpro (&Qstandard_input
);
2956 Qread_char
= intern ("read-char");
2957 staticpro (&Qread_char
);
2959 Qget_file_char
= intern ("get-file-char");
2960 staticpro (&Qget_file_char
);
2962 Qbackquote
= intern ("`");
2963 staticpro (&Qbackquote
);
2964 Qcomma
= intern (",");
2965 staticpro (&Qcomma
);
2966 Qcomma_at
= intern (",@");
2967 staticpro (&Qcomma_at
);
2968 Qcomma_dot
= intern (",.");
2969 staticpro (&Qcomma_dot
);
2971 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
2972 staticpro (&Qinhibit_file_name_operation
);
2974 Qascii_character
= intern ("ascii-character");
2975 staticpro (&Qascii_character
);
2977 Qfunction
= intern ("function");
2978 staticpro (&Qfunction
);
2980 Qload
= intern ("load");
2983 Qload_file_name
= intern ("load-file-name");
2984 staticpro (&Qload_file_name
);
2986 staticpro (&dump_path
);
2988 staticpro (&read_objects
);
2989 read_objects
= Qnil
;