1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 1998
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include <sys/types.h>
37 #include "termhooks.h"
41 #include <sys/inode.h>
46 #include <unistd.h> /* to get X_OK */
59 #ifdef LISP_FLOAT_TYPE
65 #endif /* LISP_FLOAT_TYPE */
69 #endif /* HAVE_SETLOCALE */
77 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
78 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
79 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
80 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
81 Lisp_Object Qinhibit_file_name_operation
;
83 extern Lisp_Object Qevent_symbol_element_mask
;
84 extern Lisp_Object Qfile_exists_p
;
86 /* non-zero if inside `load' */
89 /* Directory in which the sources were found. */
90 Lisp_Object Vsource_directory
;
92 /* Search path for files to be loaded. */
93 Lisp_Object Vload_path
;
95 /* This is the user-visible association list that maps features to
96 lists of defs in their load files. */
97 Lisp_Object Vload_history
;
99 /* This is used to build the load history. */
100 Lisp_Object Vcurrent_load_list
;
102 /* List of files that were preloaded. */
103 Lisp_Object Vpreloaded_file_list
;
105 /* Name of file actually being read by `load'. */
106 Lisp_Object Vload_file_name
;
108 /* Function to use for reading, in `load' and friends. */
109 Lisp_Object Vload_read_function
;
111 /* The association list of objects read with the #n=object form.
112 Each member of the list has the form (n . object), and is used to
113 look up the object for the corresponding #n# construct.
114 It must be set to nil before all top-level calls to read0. */
115 Lisp_Object read_objects
;
117 /* Nonzero means load should forcibly load all dynamic doc strings. */
118 static int load_force_doc_strings
;
120 /* Nonzero means read should convert strings to unibyte. */
121 static int load_convert_to_unibyte
;
123 /* Function to use for loading an Emacs lisp source file (not
124 compiled) instead of readevalloop. */
125 Lisp_Object Vload_source_file_function
;
127 /* List of descriptors now open for Fload. */
128 static Lisp_Object load_descriptor_list
;
130 /* File for get_file_char to read from. Use by load. */
131 static FILE *instream
;
133 /* When nonzero, read conses in pure space */
134 static int read_pure
;
136 /* For use within read-from-string (this reader is non-reentrant!!) */
137 static int read_from_string_index
;
138 static int read_from_string_index_byte
;
139 static int read_from_string_limit
;
141 /* Number of bytes left to read in the buffer character
142 that `readchar' has already advanced over. */
143 static int readchar_backlog
;
145 /* This contains the last string skipped with #@, but only on some systems.
146 On other systems we can't put the string here. */
147 static char *saved_doc_string
;
148 /* Length of buffer allocated in saved_doc_string. */
149 static int saved_doc_string_size
;
150 /* Length of actual data in saved_doc_string. */
151 static int saved_doc_string_length
;
152 /* This is the file position that string came from. */
153 static int saved_doc_string_position
;
155 /* Nonzero means inside a new-style backquote
156 with no surrounding parentheses.
157 Fread initializes this to zero, so we need not specbind it
158 or worry about what happens to it when there is an error. */
159 static int new_backquote_flag
;
161 /* Handle unreading and rereading of characters.
162 Write READCHAR to read a character,
163 UNREAD(c) to unread c to be read again.
165 These macros actually read/unread a byte code, multibyte characters
166 are not handled here. The caller should manage them if necessary.
169 #define READCHAR readchar (readcharfun)
170 #define UNREAD(c) unreadchar (readcharfun, c)
173 readchar (readcharfun
)
174 Lisp_Object readcharfun
;
177 register int c
, mpos
;
179 if (BUFFERP (readcharfun
))
181 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
183 int pt_byte
= BUF_PT_BYTE (inbuffer
);
184 int orig_pt_byte
= pt_byte
;
186 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
189 if (! NILP (inbuffer
->enable_multibyte_characters
))
191 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
192 BUF_INC_POS (inbuffer
, pt_byte
);
193 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
197 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
200 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
204 if (MARKERP (readcharfun
))
206 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
208 int bytepos
= marker_byte_position (readcharfun
);
209 int orig_bytepos
= bytepos
;
211 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
214 if (! NILP (inbuffer
->enable_multibyte_characters
))
216 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
217 BUF_INC_POS (inbuffer
, bytepos
);
218 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
222 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
226 XMARKER (readcharfun
)->bytepos
= bytepos
;
227 XMARKER (readcharfun
)->charpos
++;
231 if (EQ (readcharfun
, Qget_file_char
))
235 /* Interrupted reads have been observed while reading over the network */
236 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
245 if (STRINGP (readcharfun
))
247 if (read_from_string_index
>= read_from_string_limit
)
249 else if (STRING_MULTIBYTE (readcharfun
))
250 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
251 read_from_string_index
,
252 read_from_string_index_byte
);
254 c
= XSTRING (readcharfun
)->data
[read_from_string_index
++];
259 tem
= call0 (readcharfun
);
266 /* Unread the character C in the way appropriate for the stream READCHARFUN.
267 If the stream is a user function, call it with the char as argument. */
270 unreadchar (readcharfun
, c
)
271 Lisp_Object readcharfun
;
275 /* Don't back up the pointer if we're unreading the end-of-input mark,
276 since readchar didn't advance it when we read it. */
278 else if (BUFFERP (readcharfun
))
280 struct buffer
*b
= XBUFFER (readcharfun
);
281 int bytepos
= BUF_PT_BYTE (b
);
284 if (! NILP (b
->enable_multibyte_characters
))
285 BUF_DEC_POS (b
, bytepos
);
289 BUF_PT_BYTE (b
) = bytepos
;
291 else if (MARKERP (readcharfun
))
293 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
294 int bytepos
= XMARKER (readcharfun
)->bytepos
;
296 XMARKER (readcharfun
)->charpos
--;
297 if (! NILP (b
->enable_multibyte_characters
))
298 BUF_DEC_POS (b
, bytepos
);
302 XMARKER (readcharfun
)->bytepos
= bytepos
;
304 else if (STRINGP (readcharfun
))
306 read_from_string_index
--;
307 read_from_string_index_byte
308 = string_char_to_byte (readcharfun
, read_from_string_index
);
310 else if (EQ (readcharfun
, Qget_file_char
))
311 ungetc (c
, instream
);
313 call1 (readcharfun
, make_number (c
));
316 static Lisp_Object
read0 (), read1 (), read_list (), read_vector ();
317 static int read_multibyte ();
319 /* Get a character from the tty. */
321 extern Lisp_Object
read_char ();
323 /* Read input events until we get one that's acceptable for our purposes.
325 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
326 until we get a character we like, and then stuffed into
329 If ASCII_REQUIRED is non-zero, we check function key events to see
330 if the unmodified version of the symbol has a Qascii_character
331 property, and use that character, if present.
333 If ERROR_NONASCII is non-zero, we signal an error if the input we
334 get isn't an ASCII character with modifiers. If it's zero but
335 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
339 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
)
340 int no_switch_frame
, ascii_required
, error_nonascii
;
343 return make_number (getchar ());
345 register Lisp_Object val
, delayed_switch_frame
;
347 delayed_switch_frame
= Qnil
;
349 /* Read until we get an acceptable event. */
351 val
= read_char (0, 0, 0, Qnil
, 0);
356 /* switch-frame events are put off until after the next ASCII
357 character. This is better than signaling an error just because
358 the last characters were typed to a separate minibuffer frame,
359 for example. Eventually, some code which can deal with
360 switch-frame events will read it and process it. */
362 && EVENT_HAS_PARAMETERS (val
)
363 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
365 delayed_switch_frame
= val
;
371 /* Convert certain symbols to their ASCII equivalents. */
374 Lisp_Object tem
, tem1
, tem2
;
375 tem
= Fget (val
, Qevent_symbol_element_mask
);
378 tem1
= Fget (Fcar (tem
), Qascii_character
);
379 /* Merge this symbol's modifier bits
380 with the ASCII equivalent of its basic code. */
382 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
386 /* If we don't have a character now, deal with it appropriately. */
391 Vunread_command_events
= Fcons (val
, Qnil
);
392 error ("Non-character input-event");
399 if (! NILP (delayed_switch_frame
))
400 unread_switch_frame
= delayed_switch_frame
;
406 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 0, 0,
407 "Read a character from the command input (keyboard or macro).\n\
408 It is returned as a number.\n\
409 If the user generates an event which is not a character (i.e. a mouse\n\
410 click or function key event), `read-char' signals an error. As an\n\
411 exception, switch-frame events are put off until non-ASCII events can\n\
413 If you want to read non-character events, or ignore them, call\n\
414 `read-event' or `read-char-exclusive' instead.")
417 return read_filtered_event (1, 1, 1);
420 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 0, 0,
421 "Read an event object from the input stream.")
424 return read_filtered_event (0, 0, 0);
427 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 0, 0,
428 "Read a character from the command input (keyboard or macro).\n\
429 It is returned as a number. Non-character events are ignored.")
432 return read_filtered_event (1, 1, 0);
435 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
436 "Don't use this yourself.")
439 register Lisp_Object val
;
440 XSETINT (val
, getc (instream
));
444 static void readevalloop ();
445 static Lisp_Object
load_unwind ();
446 static Lisp_Object
load_descriptor_unwind ();
448 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
449 "Execute a file of Lisp code named FILE.\n\
450 First try FILE with `.elc' appended, then try with `.el',\n\
451 then try FILE unmodified.\n\
452 This function searches the directories in `load-path'.\n\
453 If optional second arg NOERROR is non-nil,\n\
454 report no error if FILE doesn't exist.\n\
455 Print messages at start and end of loading unless\n\
456 optional third arg NOMESSAGE is non-nil.\n\
457 If optional fourth arg NOSUFFIX is non-nil, don't try adding\n\
458 suffixes `.elc' or `.el' to the specified name FILE.\n\
459 If optional fifth arg MUST-SUFFIX is non-nil, insist on\n\
460 the suffix `.elc' or `.el'; don't accept just FILE unless\n\
461 it ends in one of those suffixes or includes a directory name.\n\
462 Return t if file exists.")
463 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
464 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
466 register FILE *stream
;
467 register int fd
= -1;
468 register Lisp_Object lispstream
;
469 int count
= specpdl_ptr
- specpdl
;
473 /* 1 means we printed the ".el is newer" message. */
475 /* 1 means we are loading a compiled file. */
483 CHECK_STRING (file
, 0);
485 /* If file name is magic, call the handler. */
486 handler
= Ffind_file_name_handler (file
, Qload
);
488 return call5 (handler
, Qload
, file
, noerror
, nomessage
, nosuffix
);
490 /* Do this after the handler to avoid
491 the need to gcpro noerror, nomessage and nosuffix.
492 (Below here, we care only whether they are nil or not.) */
493 file
= Fsubstitute_in_file_name (file
);
495 /* Avoid weird lossage with null string as arg,
496 since it would try to load a directory as a Lisp file */
497 if (XSTRING (file
)->size
> 0)
499 int size
= XSTRING (file
)->size
;
503 if (! NILP (must_suffix
))
505 /* Don't insist on adding a suffix if FILE already ends with one. */
507 && !strcmp (XSTRING (file
)->data
+ size
- 3, ".el"))
510 && !strcmp (XSTRING (file
)->data
+ size
- 4, ".elc"))
512 /* Don't insist on adding a suffix
513 if the argument includes a directory name. */
514 else if (! NILP (Ffile_name_directory (file
)))
518 fd
= openp (Vload_path
, file
,
519 (!NILP (nosuffix
) ? ""
520 : ! NILP (must_suffix
) ? ".elc:.el"
530 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
531 Fcons (file
, Qnil
)));
536 /* If FD is 0, that means openp found a remote file. */
539 handler
= Ffind_file_name_handler (found
, Qload
);
540 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
543 if (!bcmp (&(XSTRING (found
)->data
[XSTRING (found
)->size
- 4]),
554 stat ((char *)XSTRING (found
)->data
, &s1
);
555 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 0;
556 result
= stat ((char *)XSTRING (found
)->data
, &s2
);
557 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
559 /* Make the progress messages mention that source is newer. */
562 /* If we won't print another message, mention this anyway. */
563 if (! NILP (nomessage
))
564 message_with_string ("Source file `%s' newer than byte-compiled file",
567 XSTRING (found
)->data
[XSTRING (found
)->size
- 1] = 'c';
571 /* We are loading a source file (*.el). */
572 if (!NILP (Vload_source_file_function
))
575 return call4 (Vload_source_file_function
, found
, file
,
576 NILP (noerror
) ? Qnil
: Qt
,
577 NILP (nomessage
) ? Qnil
: Qt
);
583 stream
= fopen ((char *) XSTRING (found
)->data
, fmode
);
584 #else /* not WINDOWSNT */
585 stream
= fdopen (fd
, fmode
);
586 #endif /* not WINDOWSNT */
590 error ("Failure to create stdio stream for %s", XSTRING (file
)->data
);
593 if (! NILP (Vpurify_flag
))
594 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
596 if (NILP (nomessage
))
599 message_with_string ("Loading %s (source)...", file
, 1);
601 message_with_string ("Loading %s (compiled; note, source file is newer)...",
603 else /* The typical case; compiled file newer than source file. */
604 message_with_string ("Loading %s...", file
, 1);
608 lispstream
= Fcons (Qnil
, Qnil
);
609 XSETFASTINT (XCONS (lispstream
)->car
, (EMACS_UINT
)stream
>> 16);
610 XSETFASTINT (XCONS (lispstream
)->cdr
, (EMACS_UINT
)stream
& 0xffff);
611 record_unwind_protect (load_unwind
, lispstream
);
612 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
613 specbind (Qload_file_name
, found
);
614 specbind (Qinhibit_file_name_operation
, Qnil
);
616 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
618 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0, Qnil
);
619 unbind_to (count
, Qnil
);
621 /* Run any load-hooks for this file. */
622 temp
= Fassoc (file
, Vafter_load_alist
);
624 Fprogn (Fcdr (temp
));
627 if (saved_doc_string
)
628 free (saved_doc_string
);
629 saved_doc_string
= 0;
630 saved_doc_string_size
= 0;
632 if (!noninteractive
&& NILP (nomessage
))
635 message_with_string ("Loading %s (source)...done", file
, 1);
637 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
639 else /* The typical case; compiled file newer than source file. */
640 message_with_string ("Loading %s...done", file
, 1);
646 load_unwind (stream
) /* used as unwind-protect function in load */
649 fclose ((FILE *) (XFASTINT (XCONS (stream
)->car
) << 16
650 | XFASTINT (XCONS (stream
)->cdr
)));
651 if (--load_in_progress
< 0) load_in_progress
= 0;
656 load_descriptor_unwind (oldlist
)
659 load_descriptor_list
= oldlist
;
663 /* Close all descriptors in use for Floads.
664 This is used when starting a subprocess. */
671 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCONS (tail
)->cdr
)
672 close (XFASTINT (XCONS (tail
)->car
));
677 complete_filename_p (pathname
)
678 Lisp_Object pathname
;
680 register unsigned char *s
= XSTRING (pathname
)->data
;
681 return (IS_DIRECTORY_SEP (s
[0])
682 || (XSTRING (pathname
)->size
> 2
683 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
693 /* Search for a file whose name is STR, looking in directories
694 in the Lisp list PATH, and trying suffixes from SUFFIX.
695 SUFFIX is a string containing possible suffixes separated by colons.
696 On success, returns a file descriptor. On failure, returns -1.
698 EXEC_ONLY nonzero means don't open the files,
699 just look for one that is executable. In this case,
700 returns 1 on success.
702 If STOREPTR is nonzero, it points to a slot where the name of
703 the file actually found should be stored as a Lisp string.
704 nil is stored there on failure.
706 If the file we find is remote, return 0
707 but store the found remote file name in *STOREPTR.
708 We do not check for remote files if EXEC_ONLY is nonzero. */
711 openp (path
, str
, suffix
, storeptr
, exec_only
)
712 Lisp_Object path
, str
;
714 Lisp_Object
*storeptr
;
720 register char *fn
= buf
;
723 Lisp_Object filename
;
731 if (complete_filename_p (str
))
734 for (; !NILP (path
); path
= Fcdr (path
))
738 filename
= Fexpand_file_name (str
, Fcar (path
));
739 if (!complete_filename_p (filename
))
740 /* If there are non-absolute elts in PATH (eg ".") */
741 /* Of course, this could conceivably lose if luser sets
742 default-directory to be something non-absolute... */
744 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
745 if (!complete_filename_p (filename
))
746 /* Give up on this path element! */
750 /* Calculate maximum size of any filename made from
751 this path element/specified file name and any possible suffix. */
752 want_size
= strlen (suffix
) + XSTRING (filename
)->size
+ 1;
753 if (fn_size
< want_size
)
754 fn
= (char *) alloca (fn_size
= 100 + want_size
);
758 /* Loop over suffixes. */
761 char *esuffix
= (char *) index (nsuffix
, ':');
762 int lsuffix
= esuffix
? esuffix
- nsuffix
: strlen (nsuffix
);
765 /* Concatenate path element/specified name with the suffix.
766 If the directory starts with /:, remove that. */
767 if (XSTRING (filename
)->size
> 2
768 && XSTRING (filename
)->data
[0] == '/'
769 && XSTRING (filename
)->data
[1] == ':')
771 strncpy (fn
, XSTRING (filename
)->data
+ 2,
772 XSTRING (filename
)->size
- 2);
773 fn
[XSTRING (filename
)->size
- 2] = 0;
777 strncpy (fn
, XSTRING (filename
)->data
, XSTRING (filename
)->size
);
778 fn
[XSTRING (filename
)->size
] = 0;
781 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
782 strncat (fn
, nsuffix
, lsuffix
);
784 /* Check that the file exists and is not a directory. */
788 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
789 if (! NILP (handler
) && ! exec_only
)
794 string
= build_string (fn
);
795 exists
= ! NILP (exec_only
? Ffile_executable_p (string
)
796 : Ffile_readable_p (string
));
798 && ! NILP (Ffile_directory_p (build_string (fn
))))
803 /* We succeeded; return this descriptor and filename. */
805 *storeptr
= build_string (fn
);
812 int exists
= (stat (fn
, &st
) >= 0
813 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
816 /* Check that we can access or open it. */
818 fd
= (access (fn
, X_OK
) == 0) ? 1 : -1;
820 fd
= open (fn
, O_RDONLY
, 0);
824 /* We succeeded; return this descriptor and filename. */
826 *storeptr
= build_string (fn
);
833 /* Advance to next suffix. */
836 nsuffix
+= lsuffix
+ 1;
847 /* Merge the list we've accumulated of globals from the current input source
848 into the load_history variable. The details depend on whether
849 the source has an associated file name or not. */
852 build_load_history (stream
, source
)
856 register Lisp_Object tail
, prev
, newelt
;
857 register Lisp_Object tem
, tem2
;
858 register int foundit
, loading
;
860 /* Don't bother recording anything for preloaded files. */
861 if (!NILP (Vpurify_flag
))
864 loading
= stream
|| !NARROWED
;
866 tail
= Vload_history
;
873 /* Find the feature's previous assoc list... */
874 if (!NILP (Fequal (source
, Fcar (tem
))))
878 /* If we're loading, remove it. */
882 Vload_history
= Fcdr (tail
);
884 Fsetcdr (prev
, Fcdr (tail
));
887 /* Otherwise, cons on new symbols that are not already members. */
890 tem2
= Vcurrent_load_list
;
894 newelt
= Fcar (tem2
);
896 if (NILP (Fmemq (newelt
, tem
)))
897 Fsetcar (tail
, Fcons (Fcar (tem
),
898 Fcons (newelt
, Fcdr (tem
))));
911 /* If we're loading, cons the new assoc onto the front of load-history,
912 the most-recently-loaded position. Also do this if we didn't find
913 an existing member for the current source. */
914 if (loading
|| !foundit
)
915 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
920 unreadpure () /* Used as unwind-protect function in readevalloop */
930 load_convert_to_unibyte
= ! NILP (old
);
934 /* UNIBYTE specifies how to set load_convert_to_unibyte
935 for this invocation. */
938 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
, unibyte
)
939 Lisp_Object readcharfun
;
941 Lisp_Object sourcename
;
942 Lisp_Object (*evalfun
) ();
947 register Lisp_Object val
;
948 int count
= specpdl_ptr
- specpdl
;
950 struct buffer
*b
= 0;
952 if (BUFFERP (readcharfun
))
953 b
= XBUFFER (readcharfun
);
954 else if (MARKERP (readcharfun
))
955 b
= XMARKER (readcharfun
)->buffer
;
957 specbind (Qstandard_input
, readcharfun
);
958 specbind (Qcurrent_load_list
, Qnil
);
959 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
960 load_convert_to_unibyte
= !NILP (unibyte
);
962 readchar_backlog
= 0;
966 LOADHIST_ATTACH (sourcename
);
970 if (b
!= 0 && NILP (b
->name
))
971 error ("Reading from killed buffer");
977 while ((c
= READCHAR
) != '\n' && c
!= -1);
982 /* Ignore whitespace here, so we can detect eof. */
983 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
986 if (!NILP (Vpurify_flag
) && c
== '(')
988 int count1
= specpdl_ptr
- specpdl
;
989 record_unwind_protect (unreadpure
, Qnil
);
990 val
= read_list (-1, readcharfun
);
991 unbind_to (count1
, Qnil
);
997 if (NILP (Vload_read_function
))
998 val
= read0 (readcharfun
);
1000 val
= call1 (Vload_read_function
, readcharfun
);
1003 val
= (*evalfun
) (val
);
1006 Vvalues
= Fcons (val
, Vvalues
);
1007 if (EQ (Vstandard_output
, Qt
))
1014 build_load_history (stream
, sourcename
);
1017 unbind_to (count
, Qnil
);
1022 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 4, "",
1023 "Execute the current buffer as Lisp code.\n\
1024 Programs can pass two arguments, BUFFER and PRINTFLAG.\n\
1025 BUFFER is the buffer to evaluate (nil means use current buffer).\n\
1026 PRINTFLAG controls printing of output:\n\
1027 nil means discard it; anything else is stream for print.\n\
1029 If the optional third argument FILENAME is non-nil,\n\
1030 it specifies the file name to use for `load-history'.\n\
1032 This function preserves the position of point.")
1033 (buffer
, printflag
, filename
, unibyte
)
1034 Lisp_Object buffer
, printflag
, filename
, unibyte
;
1036 int count
= specpdl_ptr
- specpdl
;
1037 Lisp_Object tem
, buf
;
1040 buf
= Fcurrent_buffer ();
1042 buf
= Fget_buffer (buffer
);
1044 error ("No such buffer");
1046 if (NILP (printflag
))
1051 if (NILP (filename
))
1052 filename
= XBUFFER (buf
)->filename
;
1054 specbind (Qstandard_output
, tem
);
1055 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1056 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1057 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
), unibyte
);
1058 unbind_to (count
, Qnil
);
1064 XDEFUN ("eval-current-buffer", Feval_current_buffer
, Seval_current_buffer
, 0, 1, "",
1065 "Execute the current buffer as Lisp code.\n\
1066 Programs can pass argument PRINTFLAG which controls printing of output:\n\
1067 nil means discard it; anything else is stream for print.\n\
1069 If there is no error, point does not move. If there is an error,\n\
1070 point remains at the end of the last character read from the buffer.")
1072 Lisp_Object printflag
;
1074 int count
= specpdl_ptr
- specpdl
;
1075 Lisp_Object tem
, cbuf
;
1077 cbuf
= Fcurrent_buffer ()
1079 if (NILP (printflag
))
1083 specbind (Qstandard_output
, tem
);
1084 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1086 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1087 !NILP (printflag
), Qnil
);
1088 return unbind_to (count
, Qnil
);
1092 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 3, "r",
1093 "Execute the region as Lisp code.\n\
1094 When called from programs, expects two arguments,\n\
1095 giving starting and ending indices in the current buffer\n\
1096 of the text to be executed.\n\
1097 Programs can pass third argument PRINTFLAG which controls output:\n\
1098 nil means discard it; anything else is stream for printing it.\n\
1100 This function does not move point.")
1101 (start
, end
, printflag
)
1102 Lisp_Object start
, end
, printflag
;
1104 int count
= specpdl_ptr
- specpdl
;
1105 Lisp_Object tem
, cbuf
;
1107 cbuf
= Fcurrent_buffer ();
1109 if (NILP (printflag
))
1113 specbind (Qstandard_output
, tem
);
1115 if (NILP (printflag
))
1116 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1117 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1119 /* This both uses start and checks its type. */
1121 Fnarrow_to_region (make_number (BEGV
), end
);
1122 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1123 !NILP (printflag
), Qnil
);
1125 return unbind_to (count
, Qnil
);
1128 #endif /* standalone */
1130 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1131 "Read one Lisp expression as text from STREAM, return as Lisp object.\n\
1132 If STREAM is nil, use the value of `standard-input' (which see).\n\
1133 STREAM or the value of `standard-input' may be:\n\
1134 a buffer (read from point and advance it)\n\
1135 a marker (read from where it points and advance it)\n\
1136 a function (call it with no arguments for each character,\n\
1137 call it with a char as argument to push a char back)\n\
1138 a string (takes text from string, starting at the beginning)\n\
1139 t (read text line using minibuffer and use it).")
1143 extern Lisp_Object
Fread_minibuffer ();
1146 stream
= Vstandard_input
;
1147 if (EQ (stream
, Qt
))
1148 stream
= Qread_char
;
1150 readchar_backlog
= 0;
1151 new_backquote_flag
= 0;
1152 read_objects
= Qnil
;
1155 if (EQ (stream
, Qread_char
))
1156 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1159 if (STRINGP (stream
))
1160 return Fcar (Fread_from_string (stream
, Qnil
, Qnil
));
1162 return read0 (stream
);
1165 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1166 "Read one Lisp expression which is represented as text by STRING.\n\
1167 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).\n\
1168 START and END optionally delimit a substring of STRING from which to read;\n\
1169 they default to 0 and (length STRING) respectively.")
1170 (string
, start
, end
)
1171 Lisp_Object string
, start
, end
;
1173 int startval
, endval
;
1176 CHECK_STRING (string
,0);
1179 endval
= XSTRING (string
)->size
;
1182 CHECK_NUMBER (end
, 2);
1183 endval
= XINT (end
);
1184 if (endval
< 0 || endval
> XSTRING (string
)->size
)
1185 args_out_of_range (string
, end
);
1192 CHECK_NUMBER (start
, 1);
1193 startval
= XINT (start
);
1194 if (startval
< 0 || startval
> endval
)
1195 args_out_of_range (string
, start
);
1198 read_from_string_index
= startval
;
1199 read_from_string_index_byte
= string_char_to_byte (string
, startval
);
1200 read_from_string_limit
= endval
;
1202 new_backquote_flag
= 0;
1203 read_objects
= Qnil
;
1205 tem
= read0 (string
);
1206 return Fcons (tem
, make_number (read_from_string_index
));
1209 /* Use this for recursive reads, in contexts where internal tokens
1214 Lisp_Object readcharfun
;
1216 register Lisp_Object val
;
1219 val
= read1 (readcharfun
, &c
, 0);
1221 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1228 static int read_buffer_size
;
1229 static char *read_buffer
;
1231 /* Read multibyte form and return it as a character. C is a first
1232 byte of multibyte form, and rest of them are read from
1236 read_multibyte (c
, readcharfun
)
1238 Lisp_Object readcharfun
;
1240 /* We need the actual character code of this multibyte
1242 unsigned char str
[MAX_LENGTH_OF_MULTI_BYTE_FORM
];
1246 while ((c
= READCHAR
) >= 0xA0
1247 && len
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1250 return STRING_CHAR (str
, len
);
1253 /* Read a \-escape sequence, assuming we already read the `\'. */
1256 read_escape (readcharfun
, stringp
)
1257 Lisp_Object readcharfun
;
1260 register int c
= READCHAR
;
1264 error ("End of file");
1294 error ("Invalid escape character syntax");
1297 c
= read_escape (readcharfun
, 0);
1298 return c
| meta_modifier
;
1303 error ("Invalid escape character syntax");
1306 c
= read_escape (readcharfun
, 0);
1307 return c
| shift_modifier
;
1312 error ("Invalid escape character syntax");
1315 c
= read_escape (readcharfun
, 0);
1316 return c
| hyper_modifier
;
1321 error ("Invalid escape character syntax");
1324 c
= read_escape (readcharfun
, 0);
1325 return c
| alt_modifier
;
1330 error ("Invalid escape character syntax");
1333 c
= read_escape (readcharfun
, 0);
1334 return c
| super_modifier
;
1339 error ("Invalid escape character syntax");
1343 c
= read_escape (readcharfun
, 0);
1344 if ((c
& 0177) == '?')
1346 /* ASCII control chars are made from letters (both cases),
1347 as well as the non-letters within 0100...0137. */
1348 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1349 return (c
& (037 | ~0177));
1350 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1351 return (c
& (037 | ~0177));
1353 return c
| ctrl_modifier
;
1363 /* An octal escape, as in ANSI C. */
1365 register int i
= c
- '0';
1366 register int count
= 0;
1369 if ((c
= READCHAR
) >= '0' && c
<= '7')
1384 /* A hex escape, as in ANSI C. */
1390 if (c
>= '0' && c
<= '9')
1395 else if ((c
>= 'a' && c
<= 'f')
1396 || (c
>= 'A' && c
<= 'F'))
1399 if (c
>= 'a' && c
<= 'f')
1414 if (BASE_LEADING_CODE_P (c
))
1415 c
= read_multibyte (c
, readcharfun
);
1420 /* If the next token is ')' or ']' or '.', we store that character
1421 in *PCH and the return value is not interesting. Else, we store
1422 zero in *PCH and we read and return one lisp object.
1424 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1427 read1 (readcharfun
, pch
, first_in_list
)
1428 register Lisp_Object readcharfun
;
1433 int uninterned_symbol
= 0;
1440 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1445 return read_list (0, readcharfun
);
1448 return read_vector (readcharfun
);
1465 tmp
= read_vector (readcharfun
);
1466 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1467 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1468 error ("Invalid size char-table");
1469 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1470 XCHAR_TABLE (tmp
)->top
= Qt
;
1479 tmp
= read_vector (readcharfun
);
1480 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1481 error ("Invalid size char-table");
1482 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1483 XCHAR_TABLE (tmp
)->top
= Qnil
;
1486 Fsignal (Qinvalid_read_syntax
,
1487 Fcons (make_string ("#^^", 3), Qnil
));
1489 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1494 length
= read1 (readcharfun
, pch
, first_in_list
);
1498 Lisp_Object tmp
, val
;
1499 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1503 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1504 if (size_in_chars
!= XSTRING (tmp
)->size
1505 /* We used to print 1 char too many
1506 when the number of bits was a multiple of 8.
1507 Accept such input in case it came from an old version. */
1508 && ! (XFASTINT (length
)
1509 == (XSTRING (tmp
)->size
- 1) * BITS_PER_CHAR
))
1510 Fsignal (Qinvalid_read_syntax
,
1511 Fcons (make_string ("#&...", 5), Qnil
));
1513 val
= Fmake_bool_vector (length
, Qnil
);
1514 bcopy (XSTRING (tmp
)->data
, XBOOL_VECTOR (val
)->data
,
1516 /* Clear the extraneous bits in the last byte. */
1517 if (XINT (length
) != size_in_chars
* BITS_PER_CHAR
)
1518 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
1519 &= (1 << (XINT (length
) % BITS_PER_CHAR
)) - 1;
1522 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1527 /* Accept compiled functions at read-time so that we don't have to
1528 build them using function calls. */
1530 tmp
= read_vector (readcharfun
);
1531 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1532 XVECTOR (tmp
)->contents
);
1534 #ifdef USE_TEXT_PROPERTIES
1538 struct gcpro gcpro1
;
1541 /* Read the string itself. */
1542 tmp
= read1 (readcharfun
, &ch
, 0);
1543 if (ch
!= 0 || !STRINGP (tmp
))
1544 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1546 /* Read the intervals and their properties. */
1549 Lisp_Object beg
, end
, plist
;
1551 beg
= read1 (readcharfun
, &ch
, 0);
1555 end
= read1 (readcharfun
, &ch
, 0);
1557 plist
= read1 (readcharfun
, &ch
, 0);
1559 Fsignal (Qinvalid_read_syntax
,
1560 Fcons (build_string ("invalid string property list"),
1562 Fset_text_properties (beg
, end
, plist
, tmp
);
1568 /* #@NUMBER is used to skip NUMBER following characters.
1569 That's used in .elc files to skip over doc strings
1570 and function definitions. */
1575 /* Read a decimal integer. */
1576 while ((c
= READCHAR
) >= 0
1577 && c
>= '0' && c
<= '9')
1585 #ifndef WINDOWSNT /* I don't know if filepos works right on Windoze. */
1586 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
1588 /* If we are supposed to force doc strings into core right now,
1589 record the last string that we skipped,
1590 and record where in the file it comes from. */
1591 if (saved_doc_string_size
== 0)
1593 saved_doc_string_size
= nskip
+ 100;
1594 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
1596 if (nskip
> saved_doc_string_size
)
1598 saved_doc_string_size
= nskip
+ 100;
1599 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
1600 saved_doc_string_size
);
1603 saved_doc_string_position
= ftell (instream
);
1605 /* Copy that many characters into saved_doc_string. */
1606 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1607 saved_doc_string
[i
] = c
= READCHAR
;
1609 saved_doc_string_length
= i
;
1612 #endif /* not WINDOWSNT */
1614 /* Skip that many characters. */
1615 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
1622 return Vload_file_name
;
1624 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
1625 /* #:foo is the uninterned symbol named foo. */
1628 uninterned_symbol
= 1;
1632 /* Reader forms that can reuse previously read objects. */
1633 if (c
>= '0' && c
<= '9')
1638 /* Read a non-negative integer. */
1639 while (c
>= '0' && c
<= '9')
1645 /* #n=object returns object, but associates it with n for #n#. */
1648 tem
= read0 (readcharfun
);
1649 read_objects
= Fcons (Fcons (make_number (n
), tem
), read_objects
);
1652 /* #n# returns a previously read object. */
1655 tem
= Fassq (make_number (n
), read_objects
);
1658 /* Fall through to error message. */
1660 /* Fall through to error message. */
1664 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
1667 while ((c
= READCHAR
) >= 0 && c
!= '\n');
1672 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
1682 new_backquote_flag
= 1;
1683 value
= read0 (readcharfun
);
1684 new_backquote_flag
= 0;
1686 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
1690 if (new_backquote_flag
)
1692 Lisp_Object comma_type
= Qnil
;
1697 comma_type
= Qcomma_at
;
1699 comma_type
= Qcomma_dot
;
1702 if (ch
>= 0) UNREAD (ch
);
1703 comma_type
= Qcomma
;
1706 new_backquote_flag
= 0;
1707 value
= read0 (readcharfun
);
1708 new_backquote_flag
= 1;
1709 return Fcons (comma_type
, Fcons (value
, Qnil
));
1716 register Lisp_Object val
;
1719 if (c
< 0) return Fsignal (Qend_of_file
, Qnil
);
1722 c
= read_escape (readcharfun
, 0);
1723 else if (BASE_LEADING_CODE_P (c
))
1724 c
= read_multibyte (c
, readcharfun
);
1726 return make_number (c
);
1731 register char *p
= read_buffer
;
1732 register char *end
= read_buffer
+ read_buffer_size
;
1734 /* Nonzero if we saw an escape sequence specifying
1735 a multibyte character. */
1736 int force_multibyte
= 0;
1737 /* Nonzero if we saw an escape sequence specifying
1738 a single-byte character. */
1739 int force_singlebyte
= 0;
1743 while ((c
= READCHAR
) >= 0
1746 if (end
- p
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1748 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1749 p
+= new - read_buffer
;
1750 read_buffer
+= new - read_buffer
;
1751 end
= read_buffer
+ read_buffer_size
;
1756 c
= read_escape (readcharfun
, 1);
1758 /* C is -1 if \ newline has just been seen */
1761 if (p
== read_buffer
)
1766 /* If an escape specifies a non-ASCII single-byte character,
1767 this must be a unibyte string. */
1768 if (SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
))
1769 && ! ASCII_BYTE_P (c
))
1770 force_singlebyte
= 1;
1773 if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_META
)))
1775 unsigned char workbuf
[4];
1776 unsigned char *str
= workbuf
;
1779 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
1781 force_multibyte
= 1;
1783 bcopy (str
, p
, length
);
1788 /* Allow `\C- ' and `\C-?'. */
1789 if (c
== (CHAR_CTL
| ' '))
1791 else if (c
== (CHAR_CTL
| '?'))
1795 /* Move the meta bit to the right place for a string. */
1796 c
= (c
& ~CHAR_META
) | 0x80;
1798 error ("Invalid modifier in string");
1803 return Fsignal (Qend_of_file
, Qnil
);
1805 /* If purifying, and string starts with \ newline,
1806 return zero instead. This is for doc strings
1807 that we are really going to find in etc/DOC.nn.nn */
1808 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
1809 return make_number (0);
1811 if (force_multibyte
)
1812 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1813 else if (force_singlebyte
)
1814 nchars
= p
- read_buffer
;
1815 else if (load_convert_to_unibyte
)
1818 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1819 if (p
- read_buffer
!= nchars
)
1821 string
= make_multibyte_string (read_buffer
, nchars
,
1823 return Fstring_make_unibyte (string
);
1826 else if (EQ (readcharfun
, Qget_file_char
))
1827 /* Nowadays, reading directly from a file
1828 is used only for compiled Emacs Lisp files,
1829 and those always use the Emacs internal encoding. */
1830 nchars
= multibyte_chars_in_text (read_buffer
, p
- read_buffer
);
1832 /* In all other cases, if we read these bytes as
1833 separate characters, treat them as separate characters now. */
1834 nchars
= p
- read_buffer
;
1837 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
1839 || (p
- read_buffer
!= nchars
)));
1840 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
1842 || (p
- read_buffer
!= nchars
)));
1847 #ifdef LISP_FLOAT_TYPE
1848 /* If a period is followed by a number, then we should read it
1849 as a floating point number. Otherwise, it denotes a dotted
1851 int next_char
= READCHAR
;
1854 if (! (next_char
>= '0' && next_char
<= '9'))
1861 /* Otherwise, we fall through! Note that the atom-reading loop
1862 below will now loop at least once, assuring that we will not
1863 try to UNREAD two characters in a row. */
1867 if (c
<= 040) goto retry
;
1869 register char *p
= read_buffer
;
1873 register char *end
= read_buffer
+ read_buffer_size
;
1876 && !(c
== '\"' || c
== '\'' || c
== ';' || c
== '?'
1877 || c
== '(' || c
== ')'
1878 #ifndef LISP_FLOAT_TYPE
1879 /* If we have floating-point support, then we need
1880 to allow <digits><dot><digits>. */
1882 #endif /* not LISP_FLOAT_TYPE */
1883 || c
== '[' || c
== ']' || c
== '#'
1886 if (end
- p
< MAX_LENGTH_OF_MULTI_BYTE_FORM
)
1888 register char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1889 p
+= new - read_buffer
;
1890 read_buffer
+= new - read_buffer
;
1891 end
= read_buffer
+ read_buffer_size
;
1899 if (! SINGLE_BYTE_CHAR_P (c
))
1901 unsigned char workbuf
[4];
1902 unsigned char *str
= workbuf
;
1905 length
= non_ascii_char_to_string (c
, workbuf
, &str
);
1907 bcopy (str
, p
, length
);
1918 char *new = (char *) xrealloc (read_buffer
, read_buffer_size
*= 2);
1919 p
+= new - read_buffer
;
1920 read_buffer
+= new - read_buffer
;
1921 /* end = read_buffer + read_buffer_size; */
1928 if (!quoted
&& !uninterned_symbol
)
1931 register Lisp_Object val
;
1933 if (*p1
== '+' || *p1
== '-') p1
++;
1934 /* Is it an integer? */
1937 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
1938 #ifdef LISP_FLOAT_TYPE
1939 /* Integers can have trailing decimal points. */
1940 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
1943 /* It is an integer. */
1945 #ifdef LISP_FLOAT_TYPE
1949 if (sizeof (int) == sizeof (EMACS_INT
))
1950 XSETINT (val
, atoi (read_buffer
));
1951 else if (sizeof (long) == sizeof (EMACS_INT
))
1952 XSETINT (val
, atol (read_buffer
));
1958 #ifdef LISP_FLOAT_TYPE
1959 if (isfloat_string (read_buffer
))
1962 double value
= atof (read_buffer
);
1963 if (read_buffer
[0] == '-' && value
== 0.0)
1965 /* The only way this can be true, after isfloat_string
1966 returns 1, is if the input ends in e+INF or e+NaN. */
1967 if (p
[-1] == 'F' || p
[-1] == 'N')
1970 value
= zero
/ zero
;
1971 else if (read_buffer
[0] == '-')
1972 value
= - 1.0 / zero
;
1976 return make_float (value
);
1981 if (uninterned_symbol
)
1982 return make_symbol (read_buffer
);
1984 return intern (read_buffer
);
1989 #ifdef LISP_FLOAT_TYPE
2006 if (*cp
== '+' || *cp
== '-')
2009 if (*cp
>= '0' && *cp
<= '9')
2012 while (*cp
>= '0' && *cp
<= '9')
2020 if (*cp
>= '0' && *cp
<= '9')
2023 while (*cp
>= '0' && *cp
<= '9')
2026 if (*cp
== 'e' || *cp
== 'E')
2030 if (*cp
== '+' || *cp
== '-')
2034 if (*cp
>= '0' && *cp
<= '9')
2037 while (*cp
>= '0' && *cp
<= '9')
2040 else if (cp
== start
)
2042 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2047 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2053 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2054 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2055 || state
== (DOT_CHAR
|TRAIL_INT
)
2056 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2057 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2058 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2060 #endif /* LISP_FLOAT_TYPE */
2063 read_vector (readcharfun
)
2064 Lisp_Object readcharfun
;
2068 register Lisp_Object
*ptr
;
2069 register Lisp_Object tem
, vector
;
2070 register struct Lisp_Cons
*otem
;
2073 tem
= read_list (1, readcharfun
);
2074 len
= Flength (tem
);
2075 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2078 size
= XVECTOR (vector
)->size
;
2079 ptr
= XVECTOR (vector
)->contents
;
2080 for (i
= 0; i
< size
; i
++)
2082 ptr
[i
] = read_pure
? Fpurecopy (Fcar (tem
)) : Fcar (tem
);
2090 /* FLAG = 1 means check for ] to terminate rather than ) and .
2091 FLAG = -1 means check for starting with defun
2092 and make structure pure. */
2095 read_list (flag
, readcharfun
)
2097 register Lisp_Object readcharfun
;
2099 /* -1 means check next element for defun,
2100 0 means don't check,
2101 1 means already checked and found defun. */
2102 int defunflag
= flag
< 0 ? -1 : 0;
2103 Lisp_Object val
, tail
;
2104 register Lisp_Object elt
, tem
;
2105 struct gcpro gcpro1
, gcpro2
;
2106 /* 0 is the normal case.
2107 1 means this list is a doc reference; replace it with the number 0.
2108 2 means this list is a doc reference; replace it with the doc string. */
2109 int doc_reference
= 0;
2111 /* Initialize this to 1 if we are reading a list. */
2112 int first_in_list
= flag
<= 0;
2121 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2126 /* While building, if the list starts with #$, treat it specially. */
2127 if (EQ (elt
, Vload_file_name
)
2129 && !NILP (Vpurify_flag
))
2131 if (NILP (Vdoc_file_name
))
2132 /* We have not yet called Snarf-documentation, so assume
2133 this file is described in the DOC-MM.NN file
2134 and Snarf-documentation will fill in the right value later.
2135 For now, replace the whole list with 0. */
2138 /* We have already called Snarf-documentation, so make a relative
2139 file name for this file, so it can be found properly
2140 in the installed Lisp directory.
2141 We don't use Fexpand_file_name because that would make
2142 the directory absolute now. */
2143 elt
= concat2 (build_string ("../lisp/"),
2144 Ffile_name_nondirectory (elt
));
2146 else if (EQ (elt
, Vload_file_name
)
2148 && load_force_doc_strings
)
2157 Fsignal (Qinvalid_read_syntax
,
2158 Fcons (make_string (") or . in a vector", 18), Qnil
));
2166 XCONS (tail
)->cdr
= read0 (readcharfun
);
2168 val
= read0 (readcharfun
);
2169 read1 (readcharfun
, &ch
, 0);
2173 if (doc_reference
== 1)
2174 return make_number (0);
2175 if (doc_reference
== 2)
2177 /* Get a doc string from the file we are loading.
2178 If it's in saved_doc_string, get it from there. */
2179 int pos
= XINT (XCONS (val
)->cdr
);
2180 if (pos
>= saved_doc_string_position
2181 && pos
< (saved_doc_string_position
2182 + saved_doc_string_length
))
2184 int start
= pos
- saved_doc_string_position
;
2187 /* Process quoting with ^A,
2188 and find the end of the string,
2189 which is marked with ^_ (037). */
2190 for (from
= start
, to
= start
;
2191 saved_doc_string
[from
] != 037;)
2193 int c
= saved_doc_string
[from
++];
2196 c
= saved_doc_string
[from
++];
2198 saved_doc_string
[to
++] = c
;
2200 saved_doc_string
[to
++] = 0;
2202 saved_doc_string
[to
++] = 037;
2205 saved_doc_string
[to
++] = c
;
2208 return make_string (saved_doc_string
+ start
,
2212 return read_doc_string (val
);
2217 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2219 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2221 tem
= (read_pure
&& flag
<= 0
2222 ? pure_cons (elt
, Qnil
)
2223 : Fcons (elt
, Qnil
));
2225 XCONS (tail
)->cdr
= tem
;
2230 defunflag
= EQ (elt
, Qdefun
);
2231 else if (defunflag
> 0)
2236 Lisp_Object Vobarray
;
2237 Lisp_Object initial_obarray
;
2239 /* oblookup stores the bucket number here, for the sake of Funintern. */
2241 int oblookup_last_bucket_number
;
2243 static int hash_string ();
2244 Lisp_Object
oblookup ();
2246 /* Get an error if OBARRAY is not an obarray.
2247 If it is one, return it. */
2250 check_obarray (obarray
)
2251 Lisp_Object obarray
;
2253 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2255 /* If Vobarray is now invalid, force it to be valid. */
2256 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2258 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2263 /* Intern the C string STR: return a symbol with that name,
2264 interned in the current obarray. */
2271 int len
= strlen (str
);
2272 Lisp_Object obarray
;
2275 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2276 obarray
= check_obarray (obarray
);
2277 tem
= oblookup (obarray
, str
, len
, len
);
2280 return Fintern (make_string (str
, len
), obarray
);
2283 /* Create an uninterned symbol with name STR. */
2289 int len
= strlen (str
);
2291 return Fmake_symbol ((!NILP (Vpurify_flag
)
2292 ? make_pure_string (str
, len
, len
, 0)
2293 : make_string (str
, len
)));
2296 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
2297 "Return the canonical symbol whose name is STRING.\n\
2298 If there is none, one is created by this function and returned.\n\
2299 A second optional argument specifies the obarray to use;\n\
2300 it defaults to the value of `obarray'.")
2302 Lisp_Object string
, obarray
;
2304 register Lisp_Object tem
, sym
, *ptr
;
2306 if (NILP (obarray
)) obarray
= Vobarray
;
2307 obarray
= check_obarray (obarray
);
2309 CHECK_STRING (string
, 0);
2311 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2312 XSTRING (string
)->size
,
2313 STRING_BYTES (XSTRING (string
)));
2314 if (!INTEGERP (tem
))
2317 if (!NILP (Vpurify_flag
))
2318 string
= Fpurecopy (string
);
2319 sym
= Fmake_symbol (string
);
2320 XSYMBOL (sym
)->obarray
= obarray
;
2322 if ((XSTRING (string
)->data
[0] == ':')
2323 && obarray
== initial_obarray
)
2324 XSYMBOL (sym
)->value
= sym
;
2326 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
2328 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
2330 XSYMBOL (sym
)->next
= 0;
2335 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
2336 "Return the canonical symbol whose name is STRING, or nil if none exists.\n\
2337 A second optional argument specifies the obarray to use;\n\
2338 it defaults to the value of `obarray'.")
2340 Lisp_Object string
, obarray
;
2342 register Lisp_Object tem
;
2344 if (NILP (obarray
)) obarray
= Vobarray
;
2345 obarray
= check_obarray (obarray
);
2347 CHECK_STRING (string
, 0);
2349 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2350 XSTRING (string
)->size
,
2351 STRING_BYTES (XSTRING (string
)));
2352 if (!INTEGERP (tem
))
2357 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
2358 "Delete the symbol named NAME, if any, from OBARRAY.\n\
2359 The value is t if a symbol was found and deleted, nil otherwise.\n\
2360 NAME may be a string or a symbol. If it is a symbol, that symbol\n\
2361 is deleted, if it belongs to OBARRAY--no other symbol is deleted.\n\
2362 OBARRAY defaults to the value of the variable `obarray'.")
2364 Lisp_Object name
, obarray
;
2366 register Lisp_Object string
, tem
;
2369 if (NILP (obarray
)) obarray
= Vobarray
;
2370 obarray
= check_obarray (obarray
);
2373 XSETSTRING (string
, XSYMBOL (name
)->name
);
2376 CHECK_STRING (name
, 0);
2380 tem
= oblookup (obarray
, XSTRING (string
)->data
,
2381 XSTRING (string
)->size
,
2382 STRING_BYTES (XSTRING (string
)));
2385 /* If arg was a symbol, don't delete anything but that symbol itself. */
2386 if (SYMBOLP (name
) && !EQ (name
, tem
))
2389 XSYMBOL (tem
)->obarray
= Qnil
;
2391 hash
= oblookup_last_bucket_number
;
2393 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
2395 if (XSYMBOL (tem
)->next
)
2396 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
2398 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
2402 Lisp_Object tail
, following
;
2404 for (tail
= XVECTOR (obarray
)->contents
[hash
];
2405 XSYMBOL (tail
)->next
;
2408 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
2409 if (EQ (following
, tem
))
2411 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
2420 /* Return the symbol in OBARRAY whose names matches the string
2421 of SIZE characters (SIZE_BYTE bytes) at PTR.
2422 If there is no such symbol in OBARRAY, return nil.
2424 Also store the bucket number in oblookup_last_bucket_number. */
2427 oblookup (obarray
, ptr
, size
, size_byte
)
2428 Lisp_Object obarray
;
2430 int size
, size_byte
;
2434 register Lisp_Object tail
;
2435 Lisp_Object bucket
, tem
;
2437 if (!VECTORP (obarray
)
2438 || (obsize
= XVECTOR (obarray
)->size
) == 0)
2440 obarray
= check_obarray (obarray
);
2441 obsize
= XVECTOR (obarray
)->size
;
2443 /* This is sometimes needed in the middle of GC. */
2444 obsize
&= ~ARRAY_MARK_FLAG
;
2445 /* Combining next two lines breaks VMS C 2.3. */
2446 hash
= hash_string (ptr
, size_byte
);
2448 bucket
= XVECTOR (obarray
)->contents
[hash
];
2449 oblookup_last_bucket_number
= hash
;
2450 if (XFASTINT (bucket
) == 0)
2452 else if (!SYMBOLP (bucket
))
2453 error ("Bad data in guts of obarray"); /* Like CADR error message */
2455 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
2457 if (STRING_BYTES (XSYMBOL (tail
)->name
) == size_byte
2458 && XSYMBOL (tail
)->name
->size
== size
2459 && !bcmp (XSYMBOL (tail
)->name
->data
, ptr
, size_byte
))
2461 else if (XSYMBOL (tail
)->next
== 0)
2464 XSETINT (tem
, hash
);
2469 hash_string (ptr
, len
)
2473 register unsigned char *p
= ptr
;
2474 register unsigned char *end
= p
+ len
;
2475 register unsigned char c
;
2476 register int hash
= 0;
2481 if (c
>= 0140) c
-= 40;
2482 hash
= ((hash
<<3) + (hash
>>28) + c
);
2484 return hash
& 07777777777;
2488 map_obarray (obarray
, fn
, arg
)
2489 Lisp_Object obarray
;
2490 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
2494 register Lisp_Object tail
;
2495 CHECK_VECTOR (obarray
, 1);
2496 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
2498 tail
= XVECTOR (obarray
)->contents
[i
];
2503 if (XSYMBOL (tail
)->next
== 0)
2505 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
2511 mapatoms_1 (sym
, function
)
2512 Lisp_Object sym
, function
;
2514 call1 (function
, sym
);
2517 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
2518 "Call FUNCTION on every symbol in OBARRAY.\n\
2519 OBARRAY defaults to the value of `obarray'.")
2521 Lisp_Object function
, obarray
;
2525 if (NILP (obarray
)) obarray
= Vobarray
;
2526 obarray
= check_obarray (obarray
);
2528 map_obarray (obarray
, mapatoms_1
, function
);
2532 #define OBARRAY_SIZE 1511
2537 Lisp_Object oblength
;
2541 XSETFASTINT (oblength
, OBARRAY_SIZE
);
2543 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
2544 Vobarray
= Fmake_vector (oblength
, make_number (0));
2545 initial_obarray
= Vobarray
;
2546 staticpro (&initial_obarray
);
2547 /* Intern nil in the obarray */
2548 XSYMBOL (Qnil
)->obarray
= Vobarray
;
2549 /* These locals are to kludge around a pyramid compiler bug. */
2550 hash
= hash_string ("nil", 3);
2551 /* Separate statement here to avoid VAXC bug. */
2552 hash
%= OBARRAY_SIZE
;
2553 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
2556 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
2557 XSYMBOL (Qnil
)->function
= Qunbound
;
2558 XSYMBOL (Qunbound
)->value
= Qunbound
;
2559 XSYMBOL (Qunbound
)->function
= Qunbound
;
2562 XSYMBOL (Qnil
)->value
= Qnil
;
2563 XSYMBOL (Qnil
)->plist
= Qnil
;
2564 XSYMBOL (Qt
)->value
= Qt
;
2566 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
2569 Qvariable_documentation
= intern ("variable-documentation");
2570 staticpro (&Qvariable_documentation
);
2572 read_buffer_size
= 100 + MAX_LENGTH_OF_MULTI_BYTE_FORM
;
2573 read_buffer
= (char *) malloc (read_buffer_size
);
2578 struct Lisp_Subr
*sname
;
2581 sym
= intern (sname
->symbol_name
);
2582 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2585 #ifdef NOTDEF /* use fset in subr.el now */
2587 defalias (sname
, string
)
2588 struct Lisp_Subr
*sname
;
2592 sym
= intern (string
);
2593 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
2597 /* Define an "integer variable"; a symbol whose value is forwarded
2598 to a C variable of type int. Sample call: */
2599 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
2601 defvar_int (namestring
, address
)
2605 Lisp_Object sym
, val
;
2606 sym
= intern (namestring
);
2607 val
= allocate_misc ();
2608 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
2609 XINTFWD (val
)->intvar
= address
;
2610 XSYMBOL (sym
)->value
= val
;
2613 /* Similar but define a variable whose value is T if address contains 1,
2614 NIL if address contains 0 */
2616 defvar_bool (namestring
, address
)
2620 Lisp_Object sym
, val
;
2621 sym
= intern (namestring
);
2622 val
= allocate_misc ();
2623 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
2624 XBOOLFWD (val
)->boolvar
= address
;
2625 XSYMBOL (sym
)->value
= val
;
2628 /* Similar but define a variable whose value is the Lisp Object stored
2629 at address. Two versions: with and without gc-marking of the C
2630 variable. The nopro version is used when that variable will be
2631 gc-marked for some other reason, since marking the same slot twice
2632 can cause trouble with strings. */
2634 defvar_lisp_nopro (namestring
, address
)
2636 Lisp_Object
*address
;
2638 Lisp_Object sym
, val
;
2639 sym
= intern (namestring
);
2640 val
= allocate_misc ();
2641 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
2642 XOBJFWD (val
)->objvar
= address
;
2643 XSYMBOL (sym
)->value
= val
;
2647 defvar_lisp (namestring
, address
)
2649 Lisp_Object
*address
;
2651 defvar_lisp_nopro (namestring
, address
);
2652 staticpro (address
);
2657 /* Similar but define a variable whose value is the Lisp Object stored in
2658 the current buffer. address is the address of the slot in the buffer
2659 that is current now. */
2662 defvar_per_buffer (namestring
, address
, type
, doc
)
2664 Lisp_Object
*address
;
2668 Lisp_Object sym
, val
;
2670 extern struct buffer buffer_local_symbols
;
2672 sym
= intern (namestring
);
2673 val
= allocate_misc ();
2674 offset
= (char *)address
- (char *)current_buffer
;
2676 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
2677 XBUFFER_OBJFWD (val
)->offset
= offset
;
2678 XSYMBOL (sym
)->value
= val
;
2679 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_symbols
) = sym
;
2680 *(Lisp_Object
*)(offset
+ (char *)&buffer_local_types
) = type
;
2681 if (XINT (*(Lisp_Object
*)(offset
+ (char *)&buffer_local_flags
)) == 0)
2682 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
2683 slot of buffer_local_flags */
2687 #endif /* standalone */
2689 /* Similar but define a variable whose value is the Lisp Object stored
2690 at a particular offset in the current kboard object. */
2693 defvar_kboard (namestring
, offset
)
2697 Lisp_Object sym
, val
;
2698 sym
= intern (namestring
);
2699 val
= allocate_misc ();
2700 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
2701 XKBOARD_OBJFWD (val
)->offset
= offset
;
2702 XSYMBOL (sym
)->value
= val
;
2705 /* Record the value of load-path used at the start of dumping
2706 so we can see if the site changed it later during dumping. */
2707 static Lisp_Object dump_path
;
2713 int turn_off_warning
= 0;
2715 #ifdef HAVE_SETLOCALE
2716 /* Make sure numbers are parsed as we expect. */
2717 setlocale (LC_NUMERIC
, "C");
2718 #endif /* HAVE_SETLOCALE */
2720 /* Compute the default load-path. */
2722 normal
= PATH_LOADSEARCH
;
2723 Vload_path
= decode_env_path (0, normal
);
2725 if (NILP (Vpurify_flag
))
2726 normal
= PATH_LOADSEARCH
;
2728 normal
= PATH_DUMPLOADSEARCH
;
2730 /* In a dumped Emacs, we normally have to reset the value of
2731 Vload_path from PATH_LOADSEARCH, since the value that was dumped
2732 uses ../lisp, instead of the path of the installed elisp
2733 libraries. However, if it appears that Vload_path was changed
2734 from the default before dumping, don't override that value. */
2737 if (! NILP (Fequal (dump_path
, Vload_path
)))
2739 Vload_path
= decode_env_path (0, normal
);
2740 if (!NILP (Vinstallation_directory
))
2742 /* Add to the path the lisp subdir of the
2743 installation dir, if it exists. */
2744 Lisp_Object tem
, tem1
;
2745 tem
= Fexpand_file_name (build_string ("lisp"),
2746 Vinstallation_directory
);
2747 tem1
= Ffile_exists_p (tem
);
2750 if (NILP (Fmember (tem
, Vload_path
)))
2752 turn_off_warning
= 1;
2753 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2757 /* That dir doesn't exist, so add the build-time
2758 Lisp dirs instead. */
2759 Vload_path
= nconc2 (Vload_path
, dump_path
);
2761 /* Add leim under the installation dir, if it exists. */
2762 tem
= Fexpand_file_name (build_string ("leim"),
2763 Vinstallation_directory
);
2764 tem1
= Ffile_exists_p (tem
);
2767 if (NILP (Fmember (tem
, Vload_path
)))
2768 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2771 /* Add site-list under the installation dir, if it exists. */
2772 tem
= Fexpand_file_name (build_string ("site-lisp"),
2773 Vinstallation_directory
);
2774 tem1
= Ffile_exists_p (tem
);
2777 if (NILP (Fmember (tem
, Vload_path
)))
2778 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2781 /* If Emacs was not built in the source directory,
2782 and it is run from where it was built, add to load-path
2783 the lisp, leim and site-lisp dirs under that directory. */
2785 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
2789 tem
= Fexpand_file_name (build_string ("src/Makefile"),
2790 Vinstallation_directory
);
2791 tem1
= Ffile_exists_p (tem
);
2793 /* Don't be fooled if they moved the entire source tree
2794 AFTER dumping Emacs. If the build directory is indeed
2795 different from the source dir, src/Makefile.in and
2796 src/Makefile will not be found together. */
2797 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
2798 Vinstallation_directory
);
2799 tem2
= Ffile_exists_p (tem
);
2800 if (!NILP (tem1
) && NILP (tem2
))
2802 tem
= Fexpand_file_name (build_string ("lisp"),
2805 if (NILP (Fmember (tem
, Vload_path
)))
2806 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2808 tem
= Fexpand_file_name (build_string ("leim"),
2811 if (NILP (Fmember (tem
, Vload_path
)))
2812 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2814 tem
= Fexpand_file_name (build_string ("site-lisp"),
2817 if (NILP (Fmember (tem
, Vload_path
)))
2818 Vload_path
= nconc2 (Vload_path
, Fcons (tem
, Qnil
));
2826 /* NORMAL refers to the lisp dir in the source directory. */
2827 /* We used to add ../lisp at the front here, but
2828 that caused trouble because it was copied from dump_path
2829 into Vload_path, aboe, when Vinstallation_directory was non-nil.
2830 It should be unnecessary. */
2831 Vload_path
= decode_env_path (0, normal
);
2832 dump_path
= Vload_path
;
2837 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
2838 almost never correct, thereby causing a warning to be printed out that
2839 confuses users. Since PATH_LOADSEARCH is always overridden by the
2840 EMACSLOADPATH environment variable below, disable the warning on NT. */
2842 /* Warn if dirs in the *standard* path don't exist. */
2843 if (!turn_off_warning
)
2845 Lisp_Object path_tail
;
2847 for (path_tail
= Vload_path
;
2849 path_tail
= XCONS (path_tail
)->cdr
)
2851 Lisp_Object dirfile
;
2852 dirfile
= Fcar (path_tail
);
2853 if (STRINGP (dirfile
))
2855 dirfile
= Fdirectory_file_name (dirfile
);
2856 if (access (XSTRING (dirfile
)->data
, 0) < 0)
2857 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
2858 XCONS (path_tail
)->car
);
2862 #endif /* WINDOWSNT */
2864 /* If the EMACSLOADPATH environment variable is set, use its value.
2865 This doesn't apply if we're dumping. */
2867 if (NILP (Vpurify_flag
)
2868 && egetenv ("EMACSLOADPATH"))
2870 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
2874 load_in_progress
= 0;
2875 Vload_file_name
= Qnil
;
2877 load_descriptor_list
= Qnil
;
2879 Vstandard_input
= Qt
;
2882 /* Print a warning, using format string FORMAT, that directory DIRNAME
2883 does not exist. Print it on stderr and put it in *Message*. */
2886 dir_warning (format
, dirname
)
2888 Lisp_Object dirname
;
2891 = (char *) alloca (XSTRING (dirname
)->size
+ strlen (format
) + 5);
2893 fprintf (stderr
, format
, XSTRING (dirname
)->data
);
2894 sprintf (buffer
, format
, XSTRING (dirname
)->data
);
2895 /* Don't log the warning before we've initialized!! */
2897 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
2904 defsubr (&Sread_from_string
);
2906 defsubr (&Sintern_soft
);
2907 defsubr (&Sunintern
);
2909 defsubr (&Seval_buffer
);
2910 defsubr (&Seval_region
);
2911 defsubr (&Sread_char
);
2912 defsubr (&Sread_char_exclusive
);
2913 defsubr (&Sread_event
);
2914 defsubr (&Sget_file_char
);
2915 defsubr (&Smapatoms
);
2917 DEFVAR_LISP ("obarray", &Vobarray
,
2918 "Symbol table for use by `intern' and `read'.\n\
2919 It is a vector whose length ought to be prime for best results.\n\
2920 The vector's contents don't make sense if examined from Lisp programs;\n\
2921 to find all the symbols in an obarray, use `mapatoms'.");
2923 DEFVAR_LISP ("values", &Vvalues
,
2924 "List of values of all expressions which were read, evaluated and printed.\n\
2925 Order is reverse chronological.");
2927 DEFVAR_LISP ("standard-input", &Vstandard_input
,
2928 "Stream for read to get input from.\n\
2929 See documentation of `read' for possible values.");
2930 Vstandard_input
= Qt
;
2932 DEFVAR_LISP ("load-path", &Vload_path
,
2933 "*List of directories to search for files to load.\n\
2934 Each element is a string (directory name) or nil (try default directory).\n\
2935 Initialized based on EMACSLOADPATH environment variable, if any,\n\
2936 otherwise to default specified by file `paths.h' when Emacs was built.");
2938 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
2939 "Non-nil iff inside of `load'.");
2941 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
2942 "An alist of expressions to be evalled when particular files are loaded.\n\
2943 Each element looks like (FILENAME FORMS...).\n\
2944 When `load' is run and the file-name argument is FILENAME,\n\
2945 the FORMS in the corresponding element are executed at the end of loading.\n\n\
2946 FILENAME must match exactly! Normally FILENAME is the name of a library,\n\
2947 with no directory specified, since that is how `load' is normally called.\n\
2948 An error in FORMS does not undo the load,\n\
2949 but does prevent execution of the rest of the FORMS.");
2950 Vafter_load_alist
= Qnil
;
2952 DEFVAR_LISP ("load-history", &Vload_history
,
2953 "Alist mapping source file names to symbols and features.\n\
2954 Each alist element is a list that starts with a file name,\n\
2955 except for one element (optional) that starts with nil and describes\n\
2956 definitions evaluated from buffers not visiting files.\n\
2957 The remaining elements of each list are symbols defined as functions\n\
2958 or variables, and cons cells `(provide . FEATURE)' and `(require . FEATURE)'.");
2959 Vload_history
= Qnil
;
2961 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
2962 "Full name of file being loaded by `load'.");
2963 Vload_file_name
= Qnil
;
2965 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
2966 "Used for internal purposes by `load'.");
2967 Vcurrent_load_list
= Qnil
;
2969 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
2970 "Function used by `load' and `eval-region' for reading expressions.\n\
2971 The default is nil, which means use the function `read'.");
2972 Vload_read_function
= Qnil
;
2974 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
2975 "Function called in `load' for loading an Emacs lisp source file.\n\
2976 This function is for doing code conversion before reading the source file.\n\
2977 If nil, loading is done without any code conversion.\n\
2978 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where\n\
2979 FULLNAME is the full name of FILE.\n\
2980 See `load' for the meaning of the remaining arguments.");
2981 Vload_source_file_function
= Qnil
;
2983 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
2984 "Non-nil means `load' should force-load all dynamic doc strings.\n\
2985 This is useful when the file being loaded is a temporary copy.");
2986 load_force_doc_strings
= 0;
2988 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
2989 "Non-nil means `load' converts strings to unibyte whenever possible.\n\
2990 This is normally used in `load-with-code-conversion'\n\
2991 for loading non-compiled files.");
2992 load_convert_to_unibyte
= 0;
2994 DEFVAR_LISP ("source-directory", &Vsource_directory
,
2995 "Directory in which Emacs sources were found when Emacs was built.\n\
2996 You cannot count on them to still be there!");
2998 = Fexpand_file_name (build_string ("../"),
2999 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3001 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3002 "List of files that were preloaded (when dumping Emacs).");
3003 Vpreloaded_file_list
= Qnil
;
3005 /* Vsource_directory was initialized in init_lread. */
3007 load_descriptor_list
= Qnil
;
3008 staticpro (&load_descriptor_list
);
3010 Qcurrent_load_list
= intern ("current-load-list");
3011 staticpro (&Qcurrent_load_list
);
3013 Qstandard_input
= intern ("standard-input");
3014 staticpro (&Qstandard_input
);
3016 Qread_char
= intern ("read-char");
3017 staticpro (&Qread_char
);
3019 Qget_file_char
= intern ("get-file-char");
3020 staticpro (&Qget_file_char
);
3022 Qbackquote
= intern ("`");
3023 staticpro (&Qbackquote
);
3024 Qcomma
= intern (",");
3025 staticpro (&Qcomma
);
3026 Qcomma_at
= intern (",@");
3027 staticpro (&Qcomma_at
);
3028 Qcomma_dot
= intern (",.");
3029 staticpro (&Qcomma_dot
);
3031 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
3032 staticpro (&Qinhibit_file_name_operation
);
3034 Qascii_character
= intern ("ascii-character");
3035 staticpro (&Qascii_character
);
3037 Qfunction
= intern ("function");
3038 staticpro (&Qfunction
);
3040 Qload
= intern ("load");
3043 Qload_file_name
= intern ("load-file-name");
3044 staticpro (&Qload_file_name
);
3046 staticpro (&dump_path
);
3048 staticpro (&read_objects
);
3049 read_objects
= Qnil
;