1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 86, 87, 88, 89, 93, 94, 95, 97, 98, 99, 2000, 2001
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>
30 #include "intervals.h"
36 #include "termhooks.h"
40 #include <sys/inode.h>
45 #include <unistd.h> /* to get X_OK */
62 #endif /* HAVE_SETLOCALE */
69 #define file_offset off_t
70 #define file_tell ftello
72 #define file_offset long
73 #define file_tell ftell
80 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
81 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
82 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
83 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
84 Lisp_Object Qinhibit_file_name_operation
;
86 extern Lisp_Object Qevent_symbol_element_mask
;
87 extern Lisp_Object Qfile_exists_p
;
89 /* non-zero if inside `load' */
92 /* Directory in which the sources were found. */
93 Lisp_Object Vsource_directory
;
95 /* Search path and suffixes for files to be loaded. */
96 Lisp_Object Vload_path
, Vload_suffixes
, default_suffixes
;
98 /* File name of user's init file. */
99 Lisp_Object Vuser_init_file
;
101 /* This is the user-visible association list that maps features to
102 lists of defs in their load files. */
103 Lisp_Object Vload_history
;
105 /* This is used to build the load history. */
106 Lisp_Object Vcurrent_load_list
;
108 /* List of files that were preloaded. */
109 Lisp_Object Vpreloaded_file_list
;
111 /* Name of file actually being read by `load'. */
112 Lisp_Object Vload_file_name
;
114 /* Function to use for reading, in `load' and friends. */
115 Lisp_Object Vload_read_function
;
117 /* The association list of objects read with the #n=object form.
118 Each member of the list has the form (n . object), and is used to
119 look up the object for the corresponding #n# construct.
120 It must be set to nil before all top-level calls to read0. */
121 Lisp_Object read_objects
;
123 /* Nonzero means load should forcibly load all dynamic doc strings. */
124 static int load_force_doc_strings
;
126 /* Nonzero means read should convert strings to unibyte. */
127 static int load_convert_to_unibyte
;
129 /* Function to use for loading an Emacs lisp source file (not
130 compiled) instead of readevalloop. */
131 Lisp_Object Vload_source_file_function
;
133 /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */
134 Lisp_Object Vbyte_boolean_vars
;
136 /* Whether or not to add a `read-positions' property to symbols
138 Lisp_Object Vread_with_symbol_positions
;
140 /* List of (SYMBOL . POSITION) accumulated so far. */
141 Lisp_Object Vread_symbol_positions_list
;
143 /* List of descriptors now open for Fload. */
144 static Lisp_Object load_descriptor_list
;
146 /* File for get_file_char to read from. Use by load. */
147 static FILE *instream
;
149 /* When nonzero, read conses in pure space */
150 static int read_pure
;
152 /* For use within read-from-string (this reader is non-reentrant!!) */
153 static int read_from_string_index
;
154 static int read_from_string_index_byte
;
155 static int read_from_string_limit
;
157 /* Number of bytes left to read in the buffer character
158 that `readchar' has already advanced over. */
159 static int readchar_backlog
;
160 /* Number of characters read in the current call to Fread or
161 Fread_from_string. */
162 static int readchar_count
;
164 /* This contains the last string skipped with #@. */
165 static char *saved_doc_string
;
166 /* Length of buffer allocated in saved_doc_string. */
167 static int saved_doc_string_size
;
168 /* Length of actual data in saved_doc_string. */
169 static int saved_doc_string_length
;
170 /* This is the file position that string came from. */
171 static file_offset saved_doc_string_position
;
173 /* This contains the previous string skipped with #@.
174 We copy it from saved_doc_string when a new string
175 is put in saved_doc_string. */
176 static char *prev_saved_doc_string
;
177 /* Length of buffer allocated in prev_saved_doc_string. */
178 static int prev_saved_doc_string_size
;
179 /* Length of actual data in prev_saved_doc_string. */
180 static int prev_saved_doc_string_length
;
181 /* This is the file position that string came from. */
182 static file_offset prev_saved_doc_string_position
;
184 /* Nonzero means inside a new-style backquote
185 with no surrounding parentheses.
186 Fread initializes this to zero, so we need not specbind it
187 or worry about what happens to it when there is an error. */
188 static int new_backquote_flag
;
190 /* A list of file names for files being loaded in Fload. Used to
191 check for recursive loads. */
193 static Lisp_Object Vloads_in_progress
;
195 /* Non-zero means load dangerous compiled Lisp files. */
197 int load_dangerous_libraries
;
199 /* A regular expression used to detect files compiled with Emacs. */
201 static Lisp_Object Vbytecomp_version_regexp
;
203 static void to_multibyte
P_ ((char **, char **, int *));
204 static void readevalloop
P_ ((Lisp_Object
, FILE*, Lisp_Object
,
205 Lisp_Object (*) (), int,
206 Lisp_Object
, Lisp_Object
));
207 static Lisp_Object load_unwind
P_ ((Lisp_Object
));
208 static Lisp_Object load_descriptor_unwind
P_ ((Lisp_Object
));
211 /* Handle unreading and rereading of characters.
212 Write READCHAR to read a character,
213 UNREAD(c) to unread c to be read again.
215 The READCHAR and UNREAD macros are meant for reading/unreading a
216 byte code; they do not handle multibyte characters. The caller
217 should manage them if necessary.
219 [ Actually that seems to be a lie; READCHAR will definitely read
220 multibyte characters from buffer sources, at least. Is the
221 comment just out of date?
222 -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ]
225 #define READCHAR readchar (readcharfun)
226 #define UNREAD(c) unreadchar (readcharfun, c)
229 readchar (readcharfun
)
230 Lisp_Object readcharfun
;
237 if (BUFFERP (readcharfun
))
239 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
241 int pt_byte
= BUF_PT_BYTE (inbuffer
);
242 int orig_pt_byte
= pt_byte
;
244 if (readchar_backlog
> 0)
245 /* We get the address of the byte just passed,
246 which is the last byte of the character.
247 The other bytes in this character are consecutive with it,
248 because the gap can't be in the middle of a character. */
249 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
250 - --readchar_backlog
);
252 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
255 readchar_backlog
= -1;
257 if (! NILP (inbuffer
->enable_multibyte_characters
))
259 /* Fetch the character code from the buffer. */
260 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
261 BUF_INC_POS (inbuffer
, pt_byte
);
262 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
266 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
269 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
273 if (MARKERP (readcharfun
))
275 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
277 int bytepos
= marker_byte_position (readcharfun
);
278 int orig_bytepos
= bytepos
;
280 if (readchar_backlog
> 0)
281 /* We get the address of the byte just passed,
282 which is the last byte of the character.
283 The other bytes in this character are consecutive with it,
284 because the gap can't be in the middle of a character. */
285 return *(BUF_BYTE_ADDRESS (inbuffer
, XMARKER (readcharfun
)->bytepos
- 1)
286 - --readchar_backlog
);
288 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
291 readchar_backlog
= -1;
293 if (! NILP (inbuffer
->enable_multibyte_characters
))
295 /* Fetch the character code from the buffer. */
296 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
297 BUF_INC_POS (inbuffer
, bytepos
);
298 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
302 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
306 XMARKER (readcharfun
)->bytepos
= bytepos
;
307 XMARKER (readcharfun
)->charpos
++;
312 if (EQ (readcharfun
, Qlambda
))
313 return read_bytecode_char (0);
315 if (EQ (readcharfun
, Qget_file_char
))
319 /* Interrupted reads have been observed while reading over the network */
320 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
329 if (STRINGP (readcharfun
))
331 if (read_from_string_index
>= read_from_string_limit
)
334 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
335 read_from_string_index
,
336 read_from_string_index_byte
);
341 tem
= call0 (readcharfun
);
348 /* Unread the character C in the way appropriate for the stream READCHARFUN.
349 If the stream is a user function, call it with the char as argument. */
352 unreadchar (readcharfun
, c
)
353 Lisp_Object readcharfun
;
358 /* Don't back up the pointer if we're unreading the end-of-input mark,
359 since readchar didn't advance it when we read it. */
361 else if (BUFFERP (readcharfun
))
363 struct buffer
*b
= XBUFFER (readcharfun
);
364 int bytepos
= BUF_PT_BYTE (b
);
366 if (readchar_backlog
>= 0)
371 if (! NILP (b
->enable_multibyte_characters
))
372 BUF_DEC_POS (b
, bytepos
);
376 BUF_PT_BYTE (b
) = bytepos
;
379 else if (MARKERP (readcharfun
))
381 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
382 int bytepos
= XMARKER (readcharfun
)->bytepos
;
384 if (readchar_backlog
>= 0)
388 XMARKER (readcharfun
)->charpos
--;
389 if (! NILP (b
->enable_multibyte_characters
))
390 BUF_DEC_POS (b
, bytepos
);
394 XMARKER (readcharfun
)->bytepos
= bytepos
;
397 else if (STRINGP (readcharfun
))
399 read_from_string_index
--;
400 read_from_string_index_byte
401 = string_char_to_byte (readcharfun
, read_from_string_index
);
403 else if (EQ (readcharfun
, Qlambda
))
404 read_bytecode_char (1);
405 else if (EQ (readcharfun
, Qget_file_char
))
406 ungetc (c
, instream
);
408 call1 (readcharfun
, make_number (c
));
411 static Lisp_Object read_internal_start
P_ ((Lisp_Object
, Lisp_Object
,
413 static Lisp_Object read0
P_ ((Lisp_Object
));
414 static Lisp_Object read1
P_ ((Lisp_Object
, int *, int));
416 static Lisp_Object read_list
P_ ((int, Lisp_Object
));
417 static Lisp_Object read_vector
P_ ((Lisp_Object
, int));
418 static int read_multibyte
P_ ((int, Lisp_Object
));
420 static Lisp_Object substitute_object_recurse
P_ ((Lisp_Object
, Lisp_Object
,
422 static void substitute_object_in_subtree
P_ ((Lisp_Object
,
424 static void substitute_in_interval
P_ ((INTERVAL
, Lisp_Object
));
427 /* Get a character from the tty. */
429 extern Lisp_Object
read_char ();
431 /* Read input events until we get one that's acceptable for our purposes.
433 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
434 until we get a character we like, and then stuffed into
437 If ASCII_REQUIRED is non-zero, we check function key events to see
438 if the unmodified version of the symbol has a Qascii_character
439 property, and use that character, if present.
441 If ERROR_NONASCII is non-zero, we signal an error if the input we
442 get isn't an ASCII character with modifiers. If it's zero but
443 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
446 If INPUT_METHOD is nonzero, we invoke the current input method
447 if the character warrants that. */
450 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
452 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
454 register Lisp_Object val
, delayed_switch_frame
;
456 #ifdef HAVE_WINDOW_SYSTEM
457 if (display_hourglass_p
)
461 delayed_switch_frame
= Qnil
;
463 /* Read until we get an acceptable event. */
465 val
= read_char (0, 0, 0,
466 (input_method
? Qnil
: Qt
),
472 /* switch-frame events are put off until after the next ASCII
473 character. This is better than signaling an error just because
474 the last characters were typed to a separate minibuffer frame,
475 for example. Eventually, some code which can deal with
476 switch-frame events will read it and process it. */
478 && EVENT_HAS_PARAMETERS (val
)
479 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
481 delayed_switch_frame
= val
;
487 /* Convert certain symbols to their ASCII equivalents. */
490 Lisp_Object tem
, tem1
;
491 tem
= Fget (val
, Qevent_symbol_element_mask
);
494 tem1
= Fget (Fcar (tem
), Qascii_character
);
495 /* Merge this symbol's modifier bits
496 with the ASCII equivalent of its basic code. */
498 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
502 /* If we don't have a character now, deal with it appropriately. */
507 Vunread_command_events
= Fcons (val
, Qnil
);
508 error ("Non-character input-event");
515 if (! NILP (delayed_switch_frame
))
516 unread_switch_frame
= delayed_switch_frame
;
520 #ifdef HAVE_WINDOW_SYSTEM
521 if (display_hourglass_p
)
530 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 2, 0,
531 doc
: /* Read a character from the command input (keyboard or macro).
532 It is returned as a number.
533 If the user generates an event which is not a character (i.e. a mouse
534 click or function key event), `read-char' signals an error. As an
535 exception, switch-frame events are put off until non-ASCII events can
537 If you want to read non-character events, or ignore them, call
538 `read-event' or `read-char-exclusive' instead.
540 If the optional argument PROMPT is non-nil, display that as a prompt.
541 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
542 input method is turned on in the current buffer, that input method
543 is used for reading a character. */)
544 (prompt
, inherit_input_method
)
545 Lisp_Object prompt
, inherit_input_method
;
548 message_with_string ("%s", prompt
, 0);
549 return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method
));
552 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 2, 0,
553 doc
: /* Read an event object from the input stream.
554 If the optional argument PROMPT is non-nil, display that as a prompt.
555 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
556 input method is turned on in the current buffer, that input method
557 is used for reading a character. */)
558 (prompt
, inherit_input_method
)
559 Lisp_Object prompt
, inherit_input_method
;
562 message_with_string ("%s", prompt
, 0);
563 return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method
));
566 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 2, 0,
567 doc
: /* Read a character from the command input (keyboard or macro).
568 It is returned as a number. Non-character events are ignored.
570 If the optional argument PROMPT is non-nil, display that as a prompt.
571 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
572 input method is turned on in the current buffer, that input method
573 is used for reading a character. */)
574 (prompt
, inherit_input_method
)
575 Lisp_Object prompt
, inherit_input_method
;
578 message_with_string ("%s", prompt
, 0);
579 return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method
));
582 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
583 doc
: /* Don't use this yourself. */)
586 register Lisp_Object val
;
587 XSETINT (val
, getc (instream
));
593 /* Value is non-zero if the file asswociated with file descriptor FD
594 is a compiled Lisp file that's safe to load. Only files compiled
595 with Emacs are safe to load. Files compiled with XEmacs can lead
596 to a crash in Fbyte_code because of an incompatible change in the
607 /* Read the first few bytes from the file, and look for a line
608 specifying the byte compiler version used. */
609 nbytes
= emacs_read (fd
, buf
, sizeof buf
- 1);
614 /* Skip to the next newline, skipping over the initial `ELC'
615 with NUL bytes following it. */
616 for (i
= 0; i
< nbytes
&& buf
[i
] != '\n'; ++i
)
620 && fast_c_string_match_ignore_case (Vbytecomp_version_regexp
,
625 lseek (fd
, 0, SEEK_SET
);
630 /* Callback for record_unwind_protect. Restore the old load list OLD,
631 after loading a file successfully. */
634 record_load_unwind (old
)
637 return Vloads_in_progress
= old
;
641 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
642 doc
: /* Execute a file of Lisp code named FILE.
643 First try FILE with `.elc' appended, then try with `.el',
644 then try FILE unmodified. Environment variable references in FILE
645 are replaced with their values by calling `substitute-in-file-name'.
646 This function searches the directories in `load-path'.
647 If optional second arg NOERROR is non-nil,
648 report no error if FILE doesn't exist.
649 Print messages at start and end of loading unless
650 optional third arg NOMESSAGE is non-nil.
651 If optional fourth arg NOSUFFIX is non-nil, don't try adding
652 suffixes `.elc' or `.el' to the specified name FILE.
653 If optional fifth arg MUST-SUFFIX is non-nil, insist on
654 the suffix `.elc' or `.el'; don't accept just FILE unless
655 it ends in one of those suffixes or includes a directory name.
656 Return t if file exists. */)
657 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
658 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
660 register FILE *stream
;
661 register int fd
= -1;
662 register Lisp_Object lispstream
;
663 int count
= SPECPDL_INDEX ();
666 Lisp_Object found
, efound
;
667 /* 1 means we printed the ".el is newer" message. */
669 /* 1 means we are loading a compiled file. */
680 /* If file name is magic, call the handler. */
681 /* This shouldn't be necessary any more now that `openp' handles it right.
682 handler = Ffind_file_name_handler (file, Qload);
684 return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
686 /* Do this after the handler to avoid
687 the need to gcpro noerror, nomessage and nosuffix.
688 (Below here, we care only whether they are nil or not.)
689 The presence of this call is the result of a historical accident:
690 it used to be in every file-operations and when it got removed
691 everywhere, it accidentally stayed here. Since then, enough people
692 supposedly have things like (load "$PROJECT/foo.el") in their .emacs
693 that it seemed risky to remove. */
694 file
= Fsubstitute_in_file_name (file
);
696 /* Avoid weird lossage with null string as arg,
697 since it would try to load a directory as a Lisp file */
698 if (SCHARS (file
) > 0)
700 int size
= SBYTES (file
);
705 if (! NILP (must_suffix
))
707 /* Don't insist on adding a suffix if FILE already ends with one. */
709 && !strcmp (SDATA (file
) + size
- 3, ".el"))
712 && !strcmp (SDATA (file
) + size
- 4, ".elc"))
714 /* Don't insist on adding a suffix
715 if the argument includes a directory name. */
716 else if (! NILP (Ffile_name_directory (file
)))
720 fd
= openp (Vload_path
, file
,
721 (!NILP (nosuffix
) ? Qnil
722 : !NILP (must_suffix
) ? Vload_suffixes
723 : Fappend (2, (tmp
[0] = Vload_suffixes
,
724 tmp
[1] = default_suffixes
,
734 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
735 Fcons (file
, Qnil
)));
740 /* Tell startup.el whether or not we found the user's init file. */
741 if (EQ (Qt
, Vuser_init_file
))
742 Vuser_init_file
= found
;
744 /* If FD is -2, that means openp found a magic file. */
747 if (NILP (Fequal (found
, file
)))
748 /* If FOUND is a different file name from FILE,
749 find its handler even if we have already inhibited
750 the `load' operation on FILE. */
751 handler
= Ffind_file_name_handler (found
, Qt
);
753 handler
= Ffind_file_name_handler (found
, Qload
);
754 if (! NILP (handler
))
755 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
758 /* Check if we're stuck in a recursive load cycle.
760 2000-09-21: It's not possible to just check for the file loaded
761 being a member of Vloads_in_progress. This fails because of the
762 way the byte compiler currently works; `provide's are not
763 evaluted, see font-lock.el/jit-lock.el as an example. This
764 leads to a certain amount of ``normal'' recursion.
766 Also, just loading a file recursively is not always an error in
767 the general case; the second load may do something different. */
771 for (tem
= Vloads_in_progress
; CONSP (tem
); tem
= XCDR (tem
))
772 if (!NILP (Fequal (found
, XCAR (tem
))))
775 Fsignal (Qerror
, Fcons (build_string ("Recursive load"),
776 Fcons (found
, Vloads_in_progress
)));
777 record_unwind_protect (record_load_unwind
, Vloads_in_progress
);
778 Vloads_in_progress
= Fcons (found
, Vloads_in_progress
);
781 if (!bcmp (SDATA (found
) + SBYTES (found
) - 4,
783 /* Load .elc files directly, but not when they are
784 remote and have no handler! */
791 if (!safe_to_load_p (fd
))
794 if (!load_dangerous_libraries
)
795 error ("File `%s' was not compiled in Emacs",
797 else if (!NILP (nomessage
))
798 message_with_string ("File `%s' not compiled in Emacs", found
, 1);
804 efound
= ENCODE_FILE (found
);
809 stat ((char *)SDATA (efound
), &s1
);
810 SSET (efound
, SBYTES (efound
) - 1, 0);
811 result
= stat ((char *)SDATA (efound
), &s2
);
812 SSET (efound
, SBYTES (efound
) - 1, 'c');
815 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
817 /* Make the progress messages mention that source is newer. */
820 /* If we won't print another message, mention this anyway. */
821 if (!NILP (nomessage
))
824 file
= Fsubstring (found
, make_number (0), make_number (-1));
825 message_with_string ("Source file `%s' newer than byte-compiled file",
826 file
, STRING_MULTIBYTE (file
));
833 /* We are loading a source file (*.el). */
834 if (!NILP (Vload_source_file_function
))
840 val
= call4 (Vload_source_file_function
, found
, file
,
841 NILP (noerror
) ? Qnil
: Qt
,
842 NILP (nomessage
) ? Qnil
: Qt
);
843 return unbind_to (count
, val
);
850 efound
= ENCODE_FILE (found
);
851 stream
= fopen ((char *) SDATA (efound
), fmode
);
853 #else /* not WINDOWSNT */
854 stream
= fdopen (fd
, fmode
);
855 #endif /* not WINDOWSNT */
859 error ("Failure to create stdio stream for %s", SDATA (file
));
862 if (! NILP (Vpurify_flag
))
863 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
865 if (NILP (nomessage
))
868 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...",
871 message_with_string ("Loading %s (source)...", file
, 1);
873 message_with_string ("Loading %s (compiled; note, source file is newer)...",
875 else /* The typical case; compiled file newer than source file. */
876 message_with_string ("Loading %s...", file
, 1);
880 lispstream
= Fcons (Qnil
, Qnil
);
881 XSETCARFASTINT (lispstream
, (EMACS_UINT
)stream
>> 16);
882 XSETCDRFASTINT (lispstream
, (EMACS_UINT
)stream
& 0xffff);
883 record_unwind_protect (load_unwind
, lispstream
);
884 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
885 specbind (Qload_file_name
, found
);
886 specbind (Qinhibit_file_name_operation
, Qnil
);
888 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
890 readevalloop (Qget_file_char
, stream
, file
, Feval
, 0, Qnil
, Qnil
);
891 unbind_to (count
, Qnil
);
893 /* Run any load-hooks for this file. */
894 temp
= Fassoc (file
, Vafter_load_alist
);
896 Fprogn (Fcdr (temp
));
899 if (saved_doc_string
)
900 free (saved_doc_string
);
901 saved_doc_string
= 0;
902 saved_doc_string_size
= 0;
904 if (prev_saved_doc_string
)
905 xfree (prev_saved_doc_string
);
906 prev_saved_doc_string
= 0;
907 prev_saved_doc_string_size
= 0;
909 if (!noninteractive
&& NILP (nomessage
))
912 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done",
915 message_with_string ("Loading %s (source)...done", file
, 1);
917 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
919 else /* The typical case; compiled file newer than source file. */
920 message_with_string ("Loading %s...done", file
, 1);
927 load_unwind (stream
) /* used as unwind-protect function in load */
930 fclose ((FILE *) (XFASTINT (XCAR (stream
)) << 16
931 | XFASTINT (XCDR (stream
))));
932 if (--load_in_progress
< 0) load_in_progress
= 0;
937 load_descriptor_unwind (oldlist
)
940 load_descriptor_list
= oldlist
;
944 /* Close all descriptors in use for Floads.
945 This is used when starting a subprocess. */
952 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCDR (tail
))
953 emacs_close (XFASTINT (XCAR (tail
)));
958 complete_filename_p (pathname
)
959 Lisp_Object pathname
;
961 register const unsigned char *s
= SDATA (pathname
);
962 return (IS_DIRECTORY_SEP (s
[0])
963 || (SCHARS (pathname
) > 2
964 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
974 DEFUN ("locate-file-internal", Flocate_file_internal
, Slocate_file_internal
, 2, 4, 0,
975 doc
: /* Search for FILENAME through PATH.
976 If SUFFIXES is non-nil, it should be a list of suffixes to append to
977 file name when searching.
978 If non-nil, PREDICATE is used instead of `file-readable-p'.
979 PREDICATE can also be an integer to pass to the access(2) function,
980 in which case file-name-handlers are ignored. */)
981 (filename
, path
, suffixes
, predicate
)
982 Lisp_Object filename
, path
, suffixes
, predicate
;
985 int fd
= openp (path
, filename
, suffixes
, &file
, predicate
);
986 if (NILP (predicate
) && fd
> 0)
992 /* Search for a file whose name is STR, looking in directories
993 in the Lisp list PATH, and trying suffixes from SUFFIX.
994 On success, returns a file descriptor. On failure, returns -1.
996 SUFFIXES is a list of strings containing possible suffixes.
997 The empty suffix is automatically added iff the list is empty.
999 PREDICATE non-nil means don't open the files,
1000 just look for one that satisfies the predicate. In this case,
1001 returns 1 on success. The predicate can be a lisp function or
1002 an integer to pass to `access' (in which case file-name-handlers
1005 If STOREPTR is nonzero, it points to a slot where the name of
1006 the file actually found should be stored as a Lisp string.
1007 nil is stored there on failure.
1009 If the file we find is remote, return -2
1010 but store the found remote file name in *STOREPTR. */
1013 openp (path
, str
, suffixes
, storeptr
, predicate
)
1014 Lisp_Object path
, str
;
1015 Lisp_Object suffixes
;
1016 Lisp_Object
*storeptr
;
1017 Lisp_Object predicate
;
1022 register char *fn
= buf
;
1025 Lisp_Object filename
;
1027 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
, gcpro6
;
1028 Lisp_Object string
, tail
, encoded_fn
;
1029 int max_suffix_len
= 0;
1031 for (tail
= suffixes
; CONSP (tail
); tail
= XCDR (tail
))
1033 CHECK_STRING_CAR (tail
);
1034 max_suffix_len
= max (max_suffix_len
,
1035 SBYTES (XCAR (tail
)));
1038 string
= filename
= Qnil
;
1039 GCPRO6 (str
, string
, filename
, path
, suffixes
, encoded_fn
);
1044 if (complete_filename_p (str
))
1047 for (; CONSP (path
); path
= XCDR (path
))
1049 filename
= Fexpand_file_name (str
, XCAR (path
));
1050 if (!complete_filename_p (filename
))
1051 /* If there are non-absolute elts in PATH (eg ".") */
1052 /* Of course, this could conceivably lose if luser sets
1053 default-directory to be something non-absolute... */
1055 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
1056 if (!complete_filename_p (filename
))
1057 /* Give up on this path element! */
1061 /* Calculate maximum size of any filename made from
1062 this path element/specified file name and any possible suffix. */
1063 want_size
= max_suffix_len
+ SBYTES (filename
) + 1;
1064 if (fn_size
< want_size
)
1065 fn
= (char *) alloca (fn_size
= 100 + want_size
);
1067 /* Loop over suffixes. */
1068 for (tail
= NILP (suffixes
) ? default_suffixes
: suffixes
;
1069 CONSP (tail
); tail
= XCDR (tail
))
1071 int lsuffix
= SBYTES (XCAR (tail
));
1072 Lisp_Object handler
;
1075 /* Concatenate path element/specified name with the suffix.
1076 If the directory starts with /:, remove that. */
1077 if (SCHARS (filename
) > 2
1078 && SREF (filename
, 0) == '/'
1079 && SREF (filename
, 1) == ':')
1081 strncpy (fn
, SDATA (filename
) + 2,
1082 SBYTES (filename
) - 2);
1083 fn
[SBYTES (filename
) - 2] = 0;
1087 strncpy (fn
, SDATA (filename
),
1089 fn
[SBYTES (filename
)] = 0;
1092 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
1093 strncat (fn
, SDATA (XCAR (tail
)), lsuffix
);
1095 /* Check that the file exists and is not a directory. */
1096 /* We used to only check for handlers on non-absolute file names:
1100 handler = Ffind_file_name_handler (filename, Qfile_exists_p);
1101 It's not clear why that was the case and it breaks things like
1102 (load "/bar.el") where the file is actually "/bar.el.gz". */
1103 handler
= Ffind_file_name_handler (filename
, Qfile_exists_p
);
1104 string
= build_string (fn
);
1105 if ((!NILP (handler
) || !NILP (predicate
)) && !NATNUMP (predicate
))
1107 if (NILP (predicate
))
1108 exists
= !NILP (Ffile_readable_p (string
));
1110 exists
= !NILP (call1 (predicate
, string
));
1111 if (exists
&& !NILP (Ffile_directory_p (string
)))
1116 /* We succeeded; return this descriptor and filename. */
1127 encoded_fn
= ENCODE_FILE (string
);
1128 pfn
= SDATA (encoded_fn
);
1129 exists
= (stat (pfn
, &st
) >= 0
1130 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
1133 /* Check that we can access or open it. */
1134 if (NATNUMP (predicate
))
1135 fd
= (access (pfn
, XFASTINT (predicate
)) == 0) ? 1 : -1;
1137 fd
= emacs_open (pfn
, O_RDONLY
, 0);
1141 /* We succeeded; return this descriptor and filename. */
1159 /* Merge the list we've accumulated of globals from the current input source
1160 into the load_history variable. The details depend on whether
1161 the source has an associated file name or not. */
1164 build_load_history (stream
, source
)
1168 register Lisp_Object tail
, prev
, newelt
;
1169 register Lisp_Object tem
, tem2
;
1170 register int foundit
, loading
;
1172 loading
= stream
|| !NARROWED
;
1174 tail
= Vload_history
;
1177 while (CONSP (tail
))
1181 /* Find the feature's previous assoc list... */
1182 if (!NILP (Fequal (source
, Fcar (tem
))))
1186 /* If we're loading, remove it. */
1190 Vload_history
= XCDR (tail
);
1192 Fsetcdr (prev
, XCDR (tail
));
1195 /* Otherwise, cons on new symbols that are not already members. */
1198 tem2
= Vcurrent_load_list
;
1200 while (CONSP (tem2
))
1202 newelt
= XCAR (tem2
);
1204 if (NILP (Fmemq (newelt
, tem
)))
1205 Fsetcar (tail
, Fcons (XCAR (tem
),
1206 Fcons (newelt
, XCDR (tem
))));
1219 /* If we're loading, cons the new assoc onto the front of load-history,
1220 the most-recently-loaded position. Also do this if we didn't find
1221 an existing member for the current source. */
1222 if (loading
|| !foundit
)
1223 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1228 unreadpure (junk
) /* Used as unwind-protect function in readevalloop */
1236 readevalloop_1 (old
)
1239 load_convert_to_unibyte
= ! NILP (old
);
1243 /* Signal an `end-of-file' error, if possible with file name
1247 end_of_file_error ()
1251 if (STRINGP (Vload_file_name
))
1252 data
= Fcons (Vload_file_name
, Qnil
);
1256 Fsignal (Qend_of_file
, data
);
1259 /* UNIBYTE specifies how to set load_convert_to_unibyte
1260 for this invocation.
1261 READFUN, if non-nil, is used instead of `read'. */
1264 readevalloop (readcharfun
, stream
, sourcename
, evalfun
, printflag
, unibyte
, readfun
)
1265 Lisp_Object readcharfun
;
1267 Lisp_Object sourcename
;
1268 Lisp_Object (*evalfun
) ();
1270 Lisp_Object unibyte
, readfun
;
1273 register Lisp_Object val
;
1274 int count
= SPECPDL_INDEX ();
1275 struct gcpro gcpro1
;
1276 struct buffer
*b
= 0;
1277 int continue_reading_p
;
1279 if (BUFFERP (readcharfun
))
1280 b
= XBUFFER (readcharfun
);
1281 else if (MARKERP (readcharfun
))
1282 b
= XMARKER (readcharfun
)->buffer
;
1284 specbind (Qstandard_input
, readcharfun
);
1285 specbind (Qcurrent_load_list
, Qnil
);
1286 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1287 load_convert_to_unibyte
= !NILP (unibyte
);
1289 readchar_backlog
= -1;
1291 GCPRO1 (sourcename
);
1293 LOADHIST_ATTACH (sourcename
);
1295 continue_reading_p
= 1;
1296 while (continue_reading_p
)
1298 if (b
!= 0 && NILP (b
->name
))
1299 error ("Reading from killed buffer");
1305 while ((c
= READCHAR
) != '\n' && c
!= -1);
1310 /* Ignore whitespace here, so we can detect eof. */
1311 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
1314 if (!NILP (Vpurify_flag
) && c
== '(')
1316 int count1
= SPECPDL_INDEX ();
1317 record_unwind_protect (unreadpure
, Qnil
);
1318 val
= read_list (-1, readcharfun
);
1319 unbind_to (count1
, Qnil
);
1324 read_objects
= Qnil
;
1325 if (!NILP (readfun
))
1327 val
= call1 (readfun
, readcharfun
);
1329 /* If READCHARFUN has set point to ZV, we should
1330 stop reading, even if the form read sets point
1331 to a different value when evaluated. */
1332 if (BUFFERP (readcharfun
))
1334 struct buffer
*b
= XBUFFER (readcharfun
);
1335 if (BUF_PT (b
) == BUF_ZV (b
))
1336 continue_reading_p
= 0;
1339 else if (! NILP (Vload_read_function
))
1340 val
= call1 (Vload_read_function
, readcharfun
);
1342 val
= read_internal_start (readcharfun
, Qnil
, Qnil
);
1345 val
= (*evalfun
) (val
);
1349 Vvalues
= Fcons (val
, Vvalues
);
1350 if (EQ (Vstandard_output
, Qt
))
1357 build_load_history (stream
, sourcename
);
1360 unbind_to (count
, Qnil
);
1363 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 5, "",
1364 doc
: /* Execute the current buffer as Lisp code.
1365 Programs can pass two arguments, BUFFER and PRINTFLAG.
1366 BUFFER is the buffer to evaluate (nil means use current buffer).
1367 PRINTFLAG controls printing of output:
1368 nil means discard it; anything else is stream for print.
1370 If the optional third argument FILENAME is non-nil,
1371 it specifies the file name to use for `load-history'.
1372 The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'
1373 for this invocation.
1375 The optional fifth argument DO-ALLOW-PRINT, if not-nil, specifies that
1376 `print' and related functions should work normally even if PRINTFLAG is nil.
1378 This function preserves the position of point. */)
1379 (buffer
, printflag
, filename
, unibyte
, do_allow_print
)
1380 Lisp_Object buffer
, printflag
, filename
, unibyte
, do_allow_print
;
1382 int count
= SPECPDL_INDEX ();
1383 Lisp_Object tem
, buf
;
1386 buf
= Fcurrent_buffer ();
1388 buf
= Fget_buffer (buffer
);
1390 error ("No such buffer");
1392 if (NILP (printflag
) && NILP (do_allow_print
))
1397 if (NILP (filename
))
1398 filename
= XBUFFER (buf
)->filename
;
1400 specbind (Qstandard_output
, tem
);
1401 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1402 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1403 readevalloop (buf
, 0, filename
, Feval
, !NILP (printflag
), unibyte
, Qnil
);
1404 unbind_to (count
, Qnil
);
1409 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1410 doc
: /* Execute the region as Lisp code.
1411 When called from programs, expects two arguments,
1412 giving starting and ending indices in the current buffer
1413 of the text to be executed.
1414 Programs can pass third argument PRINTFLAG which controls output:
1415 nil means discard it; anything else is stream for printing it.
1416 Also the fourth argument READ-FUNCTION, if non-nil, is used
1417 instead of `read' to read each expression. It gets one argument
1418 which is the input stream for reading characters.
1420 This function does not move point. */)
1421 (start
, end
, printflag
, read_function
)
1422 Lisp_Object start
, end
, printflag
, read_function
;
1424 int count
= SPECPDL_INDEX ();
1425 Lisp_Object tem
, cbuf
;
1427 cbuf
= Fcurrent_buffer ();
1429 if (NILP (printflag
))
1433 specbind (Qstandard_output
, tem
);
1435 if (NILP (printflag
))
1436 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1437 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1439 /* This both uses start and checks its type. */
1441 Fnarrow_to_region (make_number (BEGV
), end
);
1442 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1443 !NILP (printflag
), Qnil
, read_function
);
1445 return unbind_to (count
, Qnil
);
1449 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1450 doc
: /* Read one Lisp expression as text from STREAM, return as Lisp object.
1451 If STREAM is nil, use the value of `standard-input' (which see).
1452 STREAM or the value of `standard-input' may be:
1453 a buffer (read from point and advance it)
1454 a marker (read from where it points and advance it)
1455 a function (call it with no arguments for each character,
1456 call it with a char as argument to push a char back)
1457 a string (takes text from string, starting at the beginning)
1458 t (read text line using minibuffer and use it, or read from
1459 standard input in batch mode). */)
1464 stream
= Vstandard_input
;
1465 if (EQ (stream
, Qt
))
1466 stream
= Qread_char
;
1467 if (EQ (stream
, Qread_char
))
1468 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1470 return read_internal_start (stream
, Qnil
, Qnil
);
1473 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1474 doc
: /* Read one Lisp expression which is represented as text by STRING.
1475 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
1476 START and END optionally delimit a substring of STRING from which to read;
1477 they default to 0 and (length STRING) respectively. */)
1478 (string
, start
, end
)
1479 Lisp_Object string
, start
, end
;
1482 CHECK_STRING (string
);
1483 /* read_internal_start sets read_from_string_index. */
1484 ret
= read_internal_start (string
, start
, end
);
1485 return Fcons (ret
, make_number (read_from_string_index
));
1488 /* Function to set up the global context we need in toplevel read
1491 read_internal_start (stream
, start
, end
)
1493 Lisp_Object start
; /* Only used when stream is a string. */
1494 Lisp_Object end
; /* Only used when stream is a string. */
1498 readchar_backlog
= -1;
1500 new_backquote_flag
= 0;
1501 read_objects
= Qnil
;
1502 if (EQ (Vread_with_symbol_positions
, Qt
)
1503 || EQ (Vread_with_symbol_positions
, stream
))
1504 Vread_symbol_positions_list
= Qnil
;
1506 if (STRINGP (stream
))
1508 int startval
, endval
;
1510 endval
= SCHARS (stream
);
1514 endval
= XINT (end
);
1515 if (endval
< 0 || endval
> SCHARS (stream
))
1516 args_out_of_range (stream
, end
);
1523 CHECK_NUMBER (start
);
1524 startval
= XINT (start
);
1525 if (startval
< 0 || startval
> endval
)
1526 args_out_of_range (stream
, start
);
1528 read_from_string_index
= startval
;
1529 read_from_string_index_byte
= string_char_to_byte (stream
, startval
);
1530 read_from_string_limit
= endval
;
1533 retval
= read0 (stream
);
1534 if (EQ (Vread_with_symbol_positions
, Qt
)
1535 || EQ (Vread_with_symbol_positions
, stream
))
1536 Vread_symbol_positions_list
= Fnreverse (Vread_symbol_positions_list
);
1540 /* Use this for recursive reads, in contexts where internal tokens
1545 Lisp_Object readcharfun
;
1547 register Lisp_Object val
;
1550 val
= read1 (readcharfun
, &c
, 0);
1552 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1559 static int read_buffer_size
;
1560 static char *read_buffer
;
1562 /* Read multibyte form and return it as a character. C is a first
1563 byte of multibyte form, and rest of them are read from
1567 read_multibyte (c
, readcharfun
)
1569 Lisp_Object readcharfun
;
1571 /* We need the actual character code of this multibyte
1573 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1581 while ((c
= READCHAR
) >= 0xA0
1582 && len
< MAX_MULTIBYTE_LENGTH
)
1588 if (UNIBYTE_STR_AS_MULTIBYTE_P (str
, len
, bytes
))
1589 return STRING_CHAR (str
, len
);
1590 /* The byte sequence is not valid as multibyte. Unread all bytes
1591 but the first one, and return the first byte. */
1597 /* Read a \-escape sequence, assuming we already read the `\'.
1598 If the escape sequence forces unibyte, store 1 into *BYTEREP.
1599 If the escape sequence forces multibyte, store 2 into *BYTEREP.
1600 Otherwise store 0 into *BYTEREP. */
1603 read_escape (readcharfun
, stringp
, byterep
)
1604 Lisp_Object readcharfun
;
1608 register int c
= READCHAR
;
1615 end_of_file_error ();
1645 error ("Invalid escape character syntax");
1648 c
= read_escape (readcharfun
, 0, byterep
);
1649 return c
| meta_modifier
;
1654 error ("Invalid escape character syntax");
1657 c
= read_escape (readcharfun
, 0, byterep
);
1658 return c
| shift_modifier
;
1663 error ("Invalid escape character syntax");
1666 c
= read_escape (readcharfun
, 0, byterep
);
1667 return c
| hyper_modifier
;
1672 error ("Invalid escape character syntax");
1675 c
= read_escape (readcharfun
, 0, byterep
);
1676 return c
| alt_modifier
;
1681 error ("Invalid escape character syntax");
1684 c
= read_escape (readcharfun
, 0, byterep
);
1685 return c
| super_modifier
;
1690 error ("Invalid escape character syntax");
1694 c
= read_escape (readcharfun
, 0, byterep
);
1695 if ((c
& ~CHAR_MODIFIER_MASK
) == '?')
1696 return 0177 | (c
& CHAR_MODIFIER_MASK
);
1697 else if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
1698 return c
| ctrl_modifier
;
1699 /* ASCII control chars are made from letters (both cases),
1700 as well as the non-letters within 0100...0137. */
1701 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1702 return (c
& (037 | ~0177));
1703 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1704 return (c
& (037 | ~0177));
1706 return c
| ctrl_modifier
;
1716 /* An octal escape, as in ANSI C. */
1718 register int i
= c
- '0';
1719 register int count
= 0;
1722 if ((c
= READCHAR
) >= '0' && c
<= '7')
1739 /* A hex escape, as in ANSI C. */
1745 if (c
>= '0' && c
<= '9')
1750 else if ((c
>= 'a' && c
<= 'f')
1751 || (c
>= 'A' && c
<= 'F'))
1754 if (c
>= 'a' && c
<= 'f')
1771 if (BASE_LEADING_CODE_P (c
))
1772 c
= read_multibyte (c
, readcharfun
);
1778 /* Read an integer in radix RADIX using READCHARFUN to read
1779 characters. RADIX must be in the interval [2..36]; if it isn't, a
1780 read error is signaled . Value is the integer read. Signals an
1781 error if encountering invalid read syntax or if RADIX is out of
1785 read_integer (readcharfun
, radix
)
1786 Lisp_Object readcharfun
;
1789 int ndigits
= 0, invalid_p
, c
, sign
= 0;
1790 EMACS_INT number
= 0;
1792 if (radix
< 2 || radix
> 36)
1796 number
= ndigits
= invalid_p
= 0;
1812 if (c
>= '0' && c
<= '9')
1814 else if (c
>= 'a' && c
<= 'z')
1815 digit
= c
- 'a' + 10;
1816 else if (c
>= 'A' && c
<= 'Z')
1817 digit
= c
- 'A' + 10;
1824 if (digit
< 0 || digit
>= radix
)
1827 number
= radix
* number
+ digit
;
1833 if (ndigits
== 0 || invalid_p
)
1836 sprintf (buf
, "integer, radix %d", radix
);
1837 Fsignal (Qinvalid_read_syntax
, Fcons (build_string (buf
), Qnil
));
1840 return make_number (sign
* number
);
1844 /* Convert unibyte text in read_buffer to multibyte.
1846 Initially, *P is a pointer after the end of the unibyte text, and
1847 the pointer *END points after the end of read_buffer.
1849 If read_buffer doesn't have enough room to hold the result
1850 of the conversion, reallocate it and adjust *P and *END.
1852 At the end, make *P point after the result of the conversion, and
1853 return in *NCHARS the number of characters in the converted
1857 to_multibyte (p
, end
, nchars
)
1863 parse_str_as_multibyte (read_buffer
, *p
- read_buffer
, &nbytes
, nchars
);
1864 if (read_buffer_size
< 2 * nbytes
)
1866 int offset
= *p
- read_buffer
;
1867 read_buffer_size
= 2 * max (read_buffer_size
, nbytes
);
1868 read_buffer
= (char *) xrealloc (read_buffer
, read_buffer_size
);
1869 *p
= read_buffer
+ offset
;
1870 *end
= read_buffer
+ read_buffer_size
;
1873 if (nbytes
!= *nchars
)
1874 nbytes
= str_as_multibyte (read_buffer
, read_buffer_size
,
1875 *p
- read_buffer
, nchars
);
1877 *p
= read_buffer
+ nbytes
;
1881 /* If the next token is ')' or ']' or '.', we store that character
1882 in *PCH and the return value is not interesting. Else, we store
1883 zero in *PCH and we read and return one lisp object.
1885 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1888 read1 (readcharfun
, pch
, first_in_list
)
1889 register Lisp_Object readcharfun
;
1894 int uninterned_symbol
= 0;
1902 end_of_file_error ();
1907 return read_list (0, readcharfun
);
1910 return read_vector (readcharfun
, 0);
1927 tmp
= read_vector (readcharfun
, 0);
1928 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1929 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1930 error ("Invalid size char-table");
1931 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1932 XCHAR_TABLE (tmp
)->top
= Qt
;
1941 tmp
= read_vector (readcharfun
, 0);
1942 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
1943 error ("Invalid size char-table");
1944 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1945 XCHAR_TABLE (tmp
)->top
= Qnil
;
1948 Fsignal (Qinvalid_read_syntax
,
1949 Fcons (make_string ("#^^", 3), Qnil
));
1951 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
1956 length
= read1 (readcharfun
, pch
, first_in_list
);
1960 Lisp_Object tmp
, val
;
1961 int size_in_chars
= ((XFASTINT (length
) + BITS_PER_CHAR
- 1)
1965 tmp
= read1 (readcharfun
, pch
, first_in_list
);
1966 if (size_in_chars
!= SCHARS (tmp
)
1967 /* We used to print 1 char too many
1968 when the number of bits was a multiple of 8.
1969 Accept such input in case it came from an old version. */
1970 && ! (XFASTINT (length
)
1971 == (SCHARS (tmp
) - 1) * BITS_PER_CHAR
))
1972 Fsignal (Qinvalid_read_syntax
,
1973 Fcons (make_string ("#&...", 5), Qnil
));
1975 val
= Fmake_bool_vector (length
, Qnil
);
1976 bcopy (SDATA (tmp
), XBOOL_VECTOR (val
)->data
,
1978 /* Clear the extraneous bits in the last byte. */
1979 if (XINT (length
) != size_in_chars
* BITS_PER_CHAR
)
1980 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
1981 &= (1 << (XINT (length
) % BITS_PER_CHAR
)) - 1;
1984 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
1989 /* Accept compiled functions at read-time so that we don't have to
1990 build them using function calls. */
1992 tmp
= read_vector (readcharfun
, 1);
1993 return Fmake_byte_code (XVECTOR (tmp
)->size
,
1994 XVECTOR (tmp
)->contents
);
1999 struct gcpro gcpro1
;
2002 /* Read the string itself. */
2003 tmp
= read1 (readcharfun
, &ch
, 0);
2004 if (ch
!= 0 || !STRINGP (tmp
))
2005 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2007 /* Read the intervals and their properties. */
2010 Lisp_Object beg
, end
, plist
;
2012 beg
= read1 (readcharfun
, &ch
, 0);
2017 end
= read1 (readcharfun
, &ch
, 0);
2019 plist
= read1 (readcharfun
, &ch
, 0);
2021 Fsignal (Qinvalid_read_syntax
,
2022 Fcons (build_string ("invalid string property list"),
2024 Fset_text_properties (beg
, end
, plist
, tmp
);
2030 /* #@NUMBER is used to skip NUMBER following characters.
2031 That's used in .elc files to skip over doc strings
2032 and function definitions. */
2037 /* Read a decimal integer. */
2038 while ((c
= READCHAR
) >= 0
2039 && c
>= '0' && c
<= '9')
2047 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
2049 /* If we are supposed to force doc strings into core right now,
2050 record the last string that we skipped,
2051 and record where in the file it comes from. */
2053 /* But first exchange saved_doc_string
2054 with prev_saved_doc_string, so we save two strings. */
2056 char *temp
= saved_doc_string
;
2057 int temp_size
= saved_doc_string_size
;
2058 file_offset temp_pos
= saved_doc_string_position
;
2059 int temp_len
= saved_doc_string_length
;
2061 saved_doc_string
= prev_saved_doc_string
;
2062 saved_doc_string_size
= prev_saved_doc_string_size
;
2063 saved_doc_string_position
= prev_saved_doc_string_position
;
2064 saved_doc_string_length
= prev_saved_doc_string_length
;
2066 prev_saved_doc_string
= temp
;
2067 prev_saved_doc_string_size
= temp_size
;
2068 prev_saved_doc_string_position
= temp_pos
;
2069 prev_saved_doc_string_length
= temp_len
;
2072 if (saved_doc_string_size
== 0)
2074 saved_doc_string_size
= nskip
+ 100;
2075 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
2077 if (nskip
> saved_doc_string_size
)
2079 saved_doc_string_size
= nskip
+ 100;
2080 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
2081 saved_doc_string_size
);
2084 saved_doc_string_position
= file_tell (instream
);
2086 /* Copy that many characters into saved_doc_string. */
2087 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2088 saved_doc_string
[i
] = c
= READCHAR
;
2090 saved_doc_string_length
= i
;
2094 /* Skip that many characters. */
2095 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2102 return Vload_file_name
;
2104 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
2105 /* #:foo is the uninterned symbol named foo. */
2108 uninterned_symbol
= 1;
2112 /* Reader forms that can reuse previously read objects. */
2113 if (c
>= '0' && c
<= '9')
2118 /* Read a non-negative integer. */
2119 while (c
>= '0' && c
<= '9')
2125 /* #n=object returns object, but associates it with n for #n#. */
2128 /* Make a placeholder for #n# to use temporarily */
2129 Lisp_Object placeholder
;
2132 placeholder
= Fcons(Qnil
, Qnil
);
2133 cell
= Fcons (make_number (n
), placeholder
);
2134 read_objects
= Fcons (cell
, read_objects
);
2136 /* Read the object itself. */
2137 tem
= read0 (readcharfun
);
2139 /* Now put it everywhere the placeholder was... */
2140 substitute_object_in_subtree (tem
, placeholder
);
2142 /* ...and #n# will use the real value from now on. */
2143 Fsetcdr (cell
, tem
);
2147 /* #n# returns a previously read object. */
2150 tem
= Fassq (make_number (n
), read_objects
);
2153 /* Fall through to error message. */
2155 else if (c
== 'r' || c
== 'R')
2156 return read_integer (readcharfun
, n
);
2158 /* Fall through to error message. */
2160 else if (c
== 'x' || c
== 'X')
2161 return read_integer (readcharfun
, 16);
2162 else if (c
== 'o' || c
== 'O')
2163 return read_integer (readcharfun
, 8);
2164 else if (c
== 'b' || c
== 'B')
2165 return read_integer (readcharfun
, 2);
2168 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2171 while ((c
= READCHAR
) >= 0 && c
!= '\n');
2176 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
2186 new_backquote_flag
++;
2187 value
= read0 (readcharfun
);
2188 new_backquote_flag
--;
2190 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
2194 if (new_backquote_flag
)
2196 Lisp_Object comma_type
= Qnil
;
2201 comma_type
= Qcomma_at
;
2203 comma_type
= Qcomma_dot
;
2206 if (ch
>= 0) UNREAD (ch
);
2207 comma_type
= Qcomma
;
2210 new_backquote_flag
--;
2211 value
= read0 (readcharfun
);
2212 new_backquote_flag
++;
2213 return Fcons (comma_type
, Fcons (value
, Qnil
));
2224 end_of_file_error ();
2227 c
= read_escape (readcharfun
, 0, &discard
);
2228 else if (BASE_LEADING_CODE_P (c
))
2229 c
= read_multibyte (c
, readcharfun
);
2231 return make_number (c
);
2236 char *p
= read_buffer
;
2237 char *end
= read_buffer
+ read_buffer_size
;
2239 /* 1 if we saw an escape sequence specifying
2240 a multibyte character, or a multibyte character. */
2241 int force_multibyte
= 0;
2242 /* 1 if we saw an escape sequence specifying
2243 a single-byte character. */
2244 int force_singlebyte
= 0;
2245 /* 1 if read_buffer contains multibyte text now. */
2246 int is_multibyte
= 0;
2250 while ((c
= READCHAR
) >= 0
2253 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2255 int offset
= p
- read_buffer
;
2256 read_buffer
= (char *) xrealloc (read_buffer
,
2257 read_buffer_size
*= 2);
2258 p
= read_buffer
+ offset
;
2259 end
= read_buffer
+ read_buffer_size
;
2266 c
= read_escape (readcharfun
, 1, &byterep
);
2268 /* C is -1 if \ newline has just been seen */
2271 if (p
== read_buffer
)
2277 force_singlebyte
= 1;
2278 else if (byterep
== 2)
2279 force_multibyte
= 1;
2282 /* A character that must be multibyte forces multibyte. */
2283 if (! SINGLE_BYTE_CHAR_P (c
& ~CHAR_MODIFIER_MASK
))
2284 force_multibyte
= 1;
2286 /* If we just discovered the need to be multibyte,
2287 convert the text accumulated thus far. */
2288 if (force_multibyte
&& ! is_multibyte
)
2291 to_multibyte (&p
, &end
, &nchars
);
2294 /* Allow `\C- ' and `\C-?'. */
2295 if (c
== (CHAR_CTL
| ' '))
2297 else if (c
== (CHAR_CTL
| '?'))
2302 /* Shift modifier is valid only with [A-Za-z]. */
2303 if ((c
& 0377) >= 'A' && (c
& 0377) <= 'Z')
2305 else if ((c
& 0377) >= 'a' && (c
& 0377) <= 'z')
2306 c
= (c
& ~CHAR_SHIFT
) - ('a' - 'A');
2310 /* Move the meta bit to the right place for a string. */
2311 c
= (c
& ~CHAR_META
) | 0x80;
2312 if (c
& CHAR_MODIFIER_MASK
)
2313 error ("Invalid modifier in string");
2316 p
+= CHAR_STRING (c
, p
);
2324 end_of_file_error ();
2326 /* If purifying, and string starts with \ newline,
2327 return zero instead. This is for doc strings
2328 that we are really going to find in etc/DOC.nn.nn */
2329 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
2330 return make_number (0);
2332 if (is_multibyte
|| force_singlebyte
)
2334 else if (load_convert_to_unibyte
)
2337 to_multibyte (&p
, &end
, &nchars
);
2338 if (p
- read_buffer
!= nchars
)
2340 string
= make_multibyte_string (read_buffer
, nchars
,
2342 return Fstring_make_unibyte (string
);
2344 /* We can make a unibyte string directly. */
2347 else if (EQ (readcharfun
, Qget_file_char
)
2348 || EQ (readcharfun
, Qlambda
))
2350 /* Nowadays, reading directly from a file is used only for
2351 compiled Emacs Lisp files, and those always use the
2352 Emacs internal encoding. Meanwhile, Qlambda is used
2353 for reading dynamic byte code (compiled with
2354 byte-compile-dynamic = t). So make the string multibyte
2355 if the string contains any multibyte sequences.
2356 (to_multibyte is a no-op if not.) */
2357 to_multibyte (&p
, &end
, &nchars
);
2358 is_multibyte
= (p
- read_buffer
) != nchars
;
2361 /* In all other cases, if we read these bytes as
2362 separate characters, treat them as separate characters now. */
2365 /* We want readchar_count to be the number of characters, not
2366 bytes. Hence we adjust for multibyte characters in the
2367 string. ... But it doesn't seem to be necessary, because
2368 READCHAR *does* read multibyte characters from buffers. */
2369 /* readchar_count -= (p - read_buffer) - nchars; */
2371 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
2373 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2379 int next_char
= READCHAR
;
2382 if (next_char
<= 040
2383 || index ("\"'`,(", next_char
))
2389 /* Otherwise, we fall through! Note that the atom-reading loop
2390 below will now loop at least once, assuring that we will not
2391 try to UNREAD two characters in a row. */
2395 if (c
<= 040) goto retry
;
2397 char *p
= read_buffer
;
2401 char *end
= read_buffer
+ read_buffer_size
;
2404 && !(c
== '\"' || c
== '\'' || c
== ';'
2405 || c
== '(' || c
== ')'
2406 || c
== '[' || c
== ']' || c
== '#'))
2408 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2410 int offset
= p
- read_buffer
;
2411 read_buffer
= (char *) xrealloc (read_buffer
,
2412 read_buffer_size
*= 2);
2413 p
= read_buffer
+ offset
;
2414 end
= read_buffer
+ read_buffer_size
;
2421 end_of_file_error ();
2425 if (! SINGLE_BYTE_CHAR_P (c
))
2426 p
+= CHAR_STRING (c
, p
);
2435 int offset
= p
- read_buffer
;
2436 read_buffer
= (char *) xrealloc (read_buffer
,
2437 read_buffer_size
*= 2);
2438 p
= read_buffer
+ offset
;
2439 end
= read_buffer
+ read_buffer_size
;
2446 if (!quoted
&& !uninterned_symbol
)
2449 register Lisp_Object val
;
2451 if (*p1
== '+' || *p1
== '-') p1
++;
2452 /* Is it an integer? */
2455 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2456 /* Integers can have trailing decimal points. */
2457 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2459 /* It is an integer. */
2463 if (sizeof (int) == sizeof (EMACS_INT
))
2464 XSETINT (val
, atoi (read_buffer
));
2465 else if (sizeof (long) == sizeof (EMACS_INT
))
2466 XSETINT (val
, atol (read_buffer
));
2472 if (isfloat_string (read_buffer
))
2474 /* Compute NaN and infinities using 0.0 in a variable,
2475 to cope with compilers that think they are smarter
2481 /* Negate the value ourselves. This treats 0, NaNs,
2482 and infinity properly on IEEE floating point hosts,
2483 and works around a common bug where atof ("-0.0")
2485 int negative
= read_buffer
[0] == '-';
2487 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2488 returns 1, is if the input ends in e+INF or e+NaN. */
2495 value
= zero
/ zero
;
2498 value
= atof (read_buffer
+ negative
);
2502 return make_float (negative
? - value
: value
);
2506 Lisp_Object result
= uninterned_symbol
? make_symbol (read_buffer
)
2507 : intern (read_buffer
);
2508 if (EQ (Vread_with_symbol_positions
, Qt
)
2509 || EQ (Vread_with_symbol_positions
, readcharfun
))
2510 Vread_symbol_positions_list
=
2511 /* Kind of a hack; this will probably fail if characters
2512 in the symbol name were escaped. Not really a big
2514 Fcons (Fcons (result
,
2515 make_number (readchar_count
2516 - XFASTINT (Flength (Fsymbol_name (result
))))),
2517 Vread_symbol_positions_list
);
2525 /* List of nodes we've seen during substitute_object_in_subtree. */
2526 static Lisp_Object seen_list
;
2529 substitute_object_in_subtree (object
, placeholder
)
2531 Lisp_Object placeholder
;
2533 Lisp_Object check_object
;
2535 /* We haven't seen any objects when we start. */
2538 /* Make all the substitutions. */
2540 = substitute_object_recurse (object
, placeholder
, object
);
2542 /* Clear seen_list because we're done with it. */
2545 /* The returned object here is expected to always eq the
2547 if (!EQ (check_object
, object
))
2548 error ("Unexpected mutation error in reader");
2551 /* Feval doesn't get called from here, so no gc protection is needed. */
2552 #define SUBSTITUTE(get_val, set_val) \
2554 Lisp_Object old_value = get_val; \
2555 Lisp_Object true_value \
2556 = substitute_object_recurse (object, placeholder,\
2559 if (!EQ (old_value, true_value)) \
2566 substitute_object_recurse (object
, placeholder
, subtree
)
2568 Lisp_Object placeholder
;
2569 Lisp_Object subtree
;
2571 /* If we find the placeholder, return the target object. */
2572 if (EQ (placeholder
, subtree
))
2575 /* If we've been to this node before, don't explore it again. */
2576 if (!EQ (Qnil
, Fmemq (subtree
, seen_list
)))
2579 /* If this node can be the entry point to a cycle, remember that
2580 we've seen it. It can only be such an entry point if it was made
2581 by #n=, which means that we can find it as a value in
2583 if (!EQ (Qnil
, Frassq (subtree
, read_objects
)))
2584 seen_list
= Fcons (subtree
, seen_list
);
2586 /* Recurse according to subtree's type.
2587 Every branch must return a Lisp_Object. */
2588 switch (XTYPE (subtree
))
2590 case Lisp_Vectorlike
:
2593 int length
= XINT (Flength(subtree
));
2594 for (i
= 0; i
< length
; i
++)
2596 Lisp_Object idx
= make_number (i
);
2597 SUBSTITUTE (Faref (subtree
, idx
),
2598 Faset (subtree
, idx
, true_value
));
2605 SUBSTITUTE (Fcar_safe (subtree
),
2606 Fsetcar (subtree
, true_value
));
2607 SUBSTITUTE (Fcdr_safe (subtree
),
2608 Fsetcdr (subtree
, true_value
));
2614 /* Check for text properties in each interval.
2615 substitute_in_interval contains part of the logic. */
2617 INTERVAL root_interval
= STRING_INTERVALS (subtree
);
2618 Lisp_Object arg
= Fcons (object
, placeholder
);
2620 traverse_intervals_noorder (root_interval
,
2621 &substitute_in_interval
, arg
);
2626 /* Other types don't recurse any further. */
2632 /* Helper function for substitute_object_recurse. */
2634 substitute_in_interval (interval
, arg
)
2638 Lisp_Object object
= Fcar (arg
);
2639 Lisp_Object placeholder
= Fcdr (arg
);
2641 SUBSTITUTE(interval
->plist
, interval
->plist
= true_value
);
2660 if (*cp
== '+' || *cp
== '-')
2663 if (*cp
>= '0' && *cp
<= '9')
2666 while (*cp
>= '0' && *cp
<= '9')
2674 if (*cp
>= '0' && *cp
<= '9')
2677 while (*cp
>= '0' && *cp
<= '9')
2680 if (*cp
== 'e' || *cp
== 'E')
2684 if (*cp
== '+' || *cp
== '-')
2688 if (*cp
>= '0' && *cp
<= '9')
2691 while (*cp
>= '0' && *cp
<= '9')
2694 else if (cp
== start
)
2696 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2701 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2707 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2708 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2709 || state
== (DOT_CHAR
|TRAIL_INT
)
2710 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2711 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2712 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2717 read_vector (readcharfun
, bytecodeflag
)
2718 Lisp_Object readcharfun
;
2723 register Lisp_Object
*ptr
;
2724 register Lisp_Object tem
, item
, vector
;
2725 register struct Lisp_Cons
*otem
;
2728 tem
= read_list (1, readcharfun
);
2729 len
= Flength (tem
);
2730 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2732 size
= XVECTOR (vector
)->size
;
2733 ptr
= XVECTOR (vector
)->contents
;
2734 for (i
= 0; i
< size
; i
++)
2737 /* If `load-force-doc-strings' is t when reading a lazily-loaded
2738 bytecode object, the docstring containing the bytecode and
2739 constants values must be treated as unibyte and passed to
2740 Fread, to get the actual bytecode string and constants vector. */
2741 if (bytecodeflag
&& load_force_doc_strings
)
2743 if (i
== COMPILED_BYTECODE
)
2745 if (!STRINGP (item
))
2746 error ("invalid byte code");
2748 /* Delay handling the bytecode slot until we know whether
2749 it is lazily-loaded (we can tell by whether the
2750 constants slot is nil). */
2751 ptr
[COMPILED_CONSTANTS
] = item
;
2754 else if (i
== COMPILED_CONSTANTS
)
2756 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
2760 /* Coerce string to unibyte (like string-as-unibyte,
2761 but without generating extra garbage and
2762 guaranteeing no change in the contents). */
2763 STRING_SET_CHARS (bytestr
, SBYTES (bytestr
));
2764 STRING_SET_UNIBYTE (bytestr
);
2766 item
= Fread (bytestr
);
2768 error ("invalid byte code");
2770 otem
= XCONS (item
);
2771 bytestr
= XCAR (item
);
2776 /* Now handle the bytecode slot. */
2777 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
2780 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
2788 /* FLAG = 1 means check for ] to terminate rather than ) and .
2789 FLAG = -1 means check for starting with defun
2790 and make structure pure. */
2793 read_list (flag
, readcharfun
)
2795 register Lisp_Object readcharfun
;
2797 /* -1 means check next element for defun,
2798 0 means don't check,
2799 1 means already checked and found defun. */
2800 int defunflag
= flag
< 0 ? -1 : 0;
2801 Lisp_Object val
, tail
;
2802 register Lisp_Object elt
, tem
;
2803 struct gcpro gcpro1
, gcpro2
;
2804 /* 0 is the normal case.
2805 1 means this list is a doc reference; replace it with the number 0.
2806 2 means this list is a doc reference; replace it with the doc string. */
2807 int doc_reference
= 0;
2809 /* Initialize this to 1 if we are reading a list. */
2810 int first_in_list
= flag
<= 0;
2819 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2824 /* While building, if the list starts with #$, treat it specially. */
2825 if (EQ (elt
, Vload_file_name
)
2827 && !NILP (Vpurify_flag
))
2829 if (NILP (Vdoc_file_name
))
2830 /* We have not yet called Snarf-documentation, so assume
2831 this file is described in the DOC-MM.NN file
2832 and Snarf-documentation will fill in the right value later.
2833 For now, replace the whole list with 0. */
2836 /* We have already called Snarf-documentation, so make a relative
2837 file name for this file, so it can be found properly
2838 in the installed Lisp directory.
2839 We don't use Fexpand_file_name because that would make
2840 the directory absolute now. */
2841 elt
= concat2 (build_string ("../lisp/"),
2842 Ffile_name_nondirectory (elt
));
2844 else if (EQ (elt
, Vload_file_name
)
2846 && load_force_doc_strings
)
2855 Fsignal (Qinvalid_read_syntax
,
2856 Fcons (make_string (") or . in a vector", 18), Qnil
));
2864 XSETCDR (tail
, read0 (readcharfun
));
2866 val
= read0 (readcharfun
);
2867 read1 (readcharfun
, &ch
, 0);
2871 if (doc_reference
== 1)
2872 return make_number (0);
2873 if (doc_reference
== 2)
2875 /* Get a doc string from the file we are loading.
2876 If it's in saved_doc_string, get it from there. */
2877 int pos
= XINT (XCDR (val
));
2878 /* Position is negative for user variables. */
2879 if (pos
< 0) pos
= -pos
;
2880 if (pos
>= saved_doc_string_position
2881 && pos
< (saved_doc_string_position
2882 + saved_doc_string_length
))
2884 int start
= pos
- saved_doc_string_position
;
2887 /* Process quoting with ^A,
2888 and find the end of the string,
2889 which is marked with ^_ (037). */
2890 for (from
= start
, to
= start
;
2891 saved_doc_string
[from
] != 037;)
2893 int c
= saved_doc_string
[from
++];
2896 c
= saved_doc_string
[from
++];
2898 saved_doc_string
[to
++] = c
;
2900 saved_doc_string
[to
++] = 0;
2902 saved_doc_string
[to
++] = 037;
2905 saved_doc_string
[to
++] = c
;
2908 return make_string (saved_doc_string
+ start
,
2911 /* Look in prev_saved_doc_string the same way. */
2912 else if (pos
>= prev_saved_doc_string_position
2913 && pos
< (prev_saved_doc_string_position
2914 + prev_saved_doc_string_length
))
2916 int start
= pos
- prev_saved_doc_string_position
;
2919 /* Process quoting with ^A,
2920 and find the end of the string,
2921 which is marked with ^_ (037). */
2922 for (from
= start
, to
= start
;
2923 prev_saved_doc_string
[from
] != 037;)
2925 int c
= prev_saved_doc_string
[from
++];
2928 c
= prev_saved_doc_string
[from
++];
2930 prev_saved_doc_string
[to
++] = c
;
2932 prev_saved_doc_string
[to
++] = 0;
2934 prev_saved_doc_string
[to
++] = 037;
2937 prev_saved_doc_string
[to
++] = c
;
2940 return make_string (prev_saved_doc_string
+ start
,
2944 return get_doc_string (val
, 0, 0);
2949 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
2951 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
2953 tem
= (read_pure
&& flag
<= 0
2954 ? pure_cons (elt
, Qnil
)
2955 : Fcons (elt
, Qnil
));
2957 XSETCDR (tail
, tem
);
2962 defunflag
= EQ (elt
, Qdefun
);
2963 else if (defunflag
> 0)
2968 Lisp_Object Vobarray
;
2969 Lisp_Object initial_obarray
;
2971 /* oblookup stores the bucket number here, for the sake of Funintern. */
2973 int oblookup_last_bucket_number
;
2975 static int hash_string ();
2977 /* Get an error if OBARRAY is not an obarray.
2978 If it is one, return it. */
2981 check_obarray (obarray
)
2982 Lisp_Object obarray
;
2984 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
2986 /* If Vobarray is now invalid, force it to be valid. */
2987 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
2989 obarray
= wrong_type_argument (Qvectorp
, obarray
);
2994 /* Intern the C string STR: return a symbol with that name,
2995 interned in the current obarray. */
3002 int len
= strlen (str
);
3003 Lisp_Object obarray
;
3006 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3007 obarray
= check_obarray (obarray
);
3008 tem
= oblookup (obarray
, str
, len
, len
);
3011 return Fintern (make_string (str
, len
), obarray
);
3014 /* Create an uninterned symbol with name STR. */
3020 int len
= strlen (str
);
3022 return Fmake_symbol ((!NILP (Vpurify_flag
)
3023 ? make_pure_string (str
, len
, len
, 0)
3024 : make_string (str
, len
)));
3027 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
3028 doc
: /* Return the canonical symbol whose name is STRING.
3029 If there is none, one is created by this function and returned.
3030 A second optional argument specifies the obarray to use;
3031 it defaults to the value of `obarray'. */)
3033 Lisp_Object string
, obarray
;
3035 register Lisp_Object tem
, sym
, *ptr
;
3037 if (NILP (obarray
)) obarray
= Vobarray
;
3038 obarray
= check_obarray (obarray
);
3040 CHECK_STRING (string
);
3042 tem
= oblookup (obarray
, SDATA (string
),
3045 if (!INTEGERP (tem
))
3048 if (!NILP (Vpurify_flag
))
3049 string
= Fpurecopy (string
);
3050 sym
= Fmake_symbol (string
);
3052 if (EQ (obarray
, initial_obarray
))
3053 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3055 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED
;
3057 if ((SREF (string
, 0) == ':')
3058 && EQ (obarray
, initial_obarray
))
3060 XSYMBOL (sym
)->constant
= 1;
3061 XSYMBOL (sym
)->value
= sym
;
3064 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
3066 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
3068 XSYMBOL (sym
)->next
= 0;
3073 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
3074 doc
: /* Return the canonical symbol named NAME, or nil if none exists.
3075 NAME may be a string or a symbol. If it is a symbol, that exact
3076 symbol is searched for.
3077 A second optional argument specifies the obarray to use;
3078 it defaults to the value of `obarray'. */)
3080 Lisp_Object name
, obarray
;
3082 register Lisp_Object tem
, string
;
3084 if (NILP (obarray
)) obarray
= Vobarray
;
3085 obarray
= check_obarray (obarray
);
3087 if (!SYMBOLP (name
))
3089 CHECK_STRING (name
);
3093 string
= SYMBOL_NAME (name
);
3095 tem
= oblookup (obarray
, SDATA (string
), SCHARS (string
), SBYTES (string
));
3096 if (INTEGERP (tem
) || (SYMBOLP (name
) && !EQ (name
, tem
)))
3102 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
3103 doc
: /* Delete the symbol named NAME, if any, from OBARRAY.
3104 The value is t if a symbol was found and deleted, nil otherwise.
3105 NAME may be a string or a symbol. If it is a symbol, that symbol
3106 is deleted, if it belongs to OBARRAY--no other symbol is deleted.
3107 OBARRAY defaults to the value of the variable `obarray'. */)
3109 Lisp_Object name
, obarray
;
3111 register Lisp_Object string
, tem
;
3114 if (NILP (obarray
)) obarray
= Vobarray
;
3115 obarray
= check_obarray (obarray
);
3118 string
= SYMBOL_NAME (name
);
3121 CHECK_STRING (name
);
3125 tem
= oblookup (obarray
, SDATA (string
),
3130 /* If arg was a symbol, don't delete anything but that symbol itself. */
3131 if (SYMBOLP (name
) && !EQ (name
, tem
))
3134 XSYMBOL (tem
)->interned
= SYMBOL_UNINTERNED
;
3135 XSYMBOL (tem
)->constant
= 0;
3136 XSYMBOL (tem
)->indirect_variable
= 0;
3138 hash
= oblookup_last_bucket_number
;
3140 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
3142 if (XSYMBOL (tem
)->next
)
3143 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
3145 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
3149 Lisp_Object tail
, following
;
3151 for (tail
= XVECTOR (obarray
)->contents
[hash
];
3152 XSYMBOL (tail
)->next
;
3155 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
3156 if (EQ (following
, tem
))
3158 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
3167 /* Return the symbol in OBARRAY whose names matches the string
3168 of SIZE characters (SIZE_BYTE bytes) at PTR.
3169 If there is no such symbol in OBARRAY, return nil.
3171 Also store the bucket number in oblookup_last_bucket_number. */
3174 oblookup (obarray
, ptr
, size
, size_byte
)
3175 Lisp_Object obarray
;
3176 register const char *ptr
;
3177 int size
, size_byte
;
3181 register Lisp_Object tail
;
3182 Lisp_Object bucket
, tem
;
3184 if (!VECTORP (obarray
)
3185 || (obsize
= XVECTOR (obarray
)->size
) == 0)
3187 obarray
= check_obarray (obarray
);
3188 obsize
= XVECTOR (obarray
)->size
;
3190 /* This is sometimes needed in the middle of GC. */
3191 obsize
&= ~ARRAY_MARK_FLAG
;
3192 /* Combining next two lines breaks VMS C 2.3. */
3193 hash
= hash_string (ptr
, size_byte
);
3195 bucket
= XVECTOR (obarray
)->contents
[hash
];
3196 oblookup_last_bucket_number
= hash
;
3197 if (XFASTINT (bucket
) == 0)
3199 else if (!SYMBOLP (bucket
))
3200 error ("Bad data in guts of obarray"); /* Like CADR error message */
3202 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
3204 if (SBYTES (SYMBOL_NAME (tail
)) == size_byte
3205 && SCHARS (SYMBOL_NAME (tail
)) == size
3206 && !bcmp (SDATA (SYMBOL_NAME (tail
)), ptr
, size_byte
))
3208 else if (XSYMBOL (tail
)->next
== 0)
3211 XSETINT (tem
, hash
);
3216 hash_string (ptr
, len
)
3217 const unsigned char *ptr
;
3220 register const unsigned char *p
= ptr
;
3221 register const unsigned char *end
= p
+ len
;
3222 register unsigned char c
;
3223 register int hash
= 0;
3228 if (c
>= 0140) c
-= 40;
3229 hash
= ((hash
<<3) + (hash
>>28) + c
);
3231 return hash
& 07777777777;
3235 map_obarray (obarray
, fn
, arg
)
3236 Lisp_Object obarray
;
3237 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
3241 register Lisp_Object tail
;
3242 CHECK_VECTOR (obarray
);
3243 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
3245 tail
= XVECTOR (obarray
)->contents
[i
];
3250 if (XSYMBOL (tail
)->next
== 0)
3252 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
3258 mapatoms_1 (sym
, function
)
3259 Lisp_Object sym
, function
;
3261 call1 (function
, sym
);
3264 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
3265 doc
: /* Call FUNCTION on every symbol in OBARRAY.
3266 OBARRAY defaults to the value of `obarray'. */)
3268 Lisp_Object function
, obarray
;
3270 if (NILP (obarray
)) obarray
= Vobarray
;
3271 obarray
= check_obarray (obarray
);
3273 map_obarray (obarray
, mapatoms_1
, function
);
3277 #define OBARRAY_SIZE 1511
3282 Lisp_Object oblength
;
3286 XSETFASTINT (oblength
, OBARRAY_SIZE
);
3288 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
3289 Vobarray
= Fmake_vector (oblength
, make_number (0));
3290 initial_obarray
= Vobarray
;
3291 staticpro (&initial_obarray
);
3292 /* Intern nil in the obarray */
3293 XSYMBOL (Qnil
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3294 XSYMBOL (Qnil
)->constant
= 1;
3296 /* These locals are to kludge around a pyramid compiler bug. */
3297 hash
= hash_string ("nil", 3);
3298 /* Separate statement here to avoid VAXC bug. */
3299 hash
%= OBARRAY_SIZE
;
3300 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
3303 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
3304 XSYMBOL (Qnil
)->function
= Qunbound
;
3305 XSYMBOL (Qunbound
)->value
= Qunbound
;
3306 XSYMBOL (Qunbound
)->function
= Qunbound
;
3309 XSYMBOL (Qnil
)->value
= Qnil
;
3310 XSYMBOL (Qnil
)->plist
= Qnil
;
3311 XSYMBOL (Qt
)->value
= Qt
;
3312 XSYMBOL (Qt
)->constant
= 1;
3314 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
3317 Qvariable_documentation
= intern ("variable-documentation");
3318 staticpro (&Qvariable_documentation
);
3320 read_buffer_size
= 100 + MAX_MULTIBYTE_LENGTH
;
3321 read_buffer
= (char *) xmalloc (read_buffer_size
);
3326 struct Lisp_Subr
*sname
;
3329 sym
= intern (sname
->symbol_name
);
3330 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3333 #ifdef NOTDEF /* use fset in subr.el now */
3335 defalias (sname
, string
)
3336 struct Lisp_Subr
*sname
;
3340 sym
= intern (string
);
3341 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3345 /* Define an "integer variable"; a symbol whose value is forwarded
3346 to a C variable of type int. Sample call: */
3347 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
3349 defvar_int (namestring
, address
)
3353 Lisp_Object sym
, val
;
3354 sym
= intern (namestring
);
3355 val
= allocate_misc ();
3356 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
3357 XINTFWD (val
)->intvar
= address
;
3358 SET_SYMBOL_VALUE (sym
, val
);
3361 /* Similar but define a variable whose value is t if address contains 1,
3362 nil if address contains 0 */
3364 defvar_bool (namestring
, address
)
3368 Lisp_Object sym
, val
;
3369 sym
= intern (namestring
);
3370 val
= allocate_misc ();
3371 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
3372 XBOOLFWD (val
)->boolvar
= address
;
3373 SET_SYMBOL_VALUE (sym
, val
);
3374 Vbyte_boolean_vars
= Fcons (sym
, Vbyte_boolean_vars
);
3377 /* Similar but define a variable whose value is the Lisp Object stored
3378 at address. Two versions: with and without gc-marking of the C
3379 variable. The nopro version is used when that variable will be
3380 gc-marked for some other reason, since marking the same slot twice
3381 can cause trouble with strings. */
3383 defvar_lisp_nopro (namestring
, address
)
3385 Lisp_Object
*address
;
3387 Lisp_Object sym
, val
;
3388 sym
= intern (namestring
);
3389 val
= allocate_misc ();
3390 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
3391 XOBJFWD (val
)->objvar
= address
;
3392 SET_SYMBOL_VALUE (sym
, val
);
3396 defvar_lisp (namestring
, address
)
3398 Lisp_Object
*address
;
3400 defvar_lisp_nopro (namestring
, address
);
3401 staticpro (address
);
3404 /* Similar but define a variable whose value is the Lisp Object stored in
3405 the current buffer. address is the address of the slot in the buffer
3406 that is current now. */
3409 defvar_per_buffer (namestring
, address
, type
, doc
)
3411 Lisp_Object
*address
;
3415 Lisp_Object sym
, val
;
3417 extern struct buffer buffer_local_symbols
;
3419 sym
= intern (namestring
);
3420 val
= allocate_misc ();
3421 offset
= (char *)address
- (char *)current_buffer
;
3423 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
3424 XBUFFER_OBJFWD (val
)->offset
= offset
;
3425 SET_SYMBOL_VALUE (sym
, val
);
3426 PER_BUFFER_SYMBOL (offset
) = sym
;
3427 PER_BUFFER_TYPE (offset
) = type
;
3429 if (PER_BUFFER_IDX (offset
) == 0)
3430 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
3431 slot of buffer_local_flags */
3436 /* Similar but define a variable whose value is the Lisp Object stored
3437 at a particular offset in the current kboard object. */
3440 defvar_kboard (namestring
, offset
)
3444 Lisp_Object sym
, val
;
3445 sym
= intern (namestring
);
3446 val
= allocate_misc ();
3447 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
3448 XKBOARD_OBJFWD (val
)->offset
= offset
;
3449 SET_SYMBOL_VALUE (sym
, val
);
3452 /* Record the value of load-path used at the start of dumping
3453 so we can see if the site changed it later during dumping. */
3454 static Lisp_Object dump_path
;
3460 int turn_off_warning
= 0;
3462 /* Compute the default load-path. */
3464 normal
= PATH_LOADSEARCH
;
3465 Vload_path
= decode_env_path (0, normal
);
3467 if (NILP (Vpurify_flag
))
3468 normal
= PATH_LOADSEARCH
;
3470 normal
= PATH_DUMPLOADSEARCH
;
3472 /* In a dumped Emacs, we normally have to reset the value of
3473 Vload_path from PATH_LOADSEARCH, since the value that was dumped
3474 uses ../lisp, instead of the path of the installed elisp
3475 libraries. However, if it appears that Vload_path was changed
3476 from the default before dumping, don't override that value. */
3479 if (! NILP (Fequal (dump_path
, Vload_path
)))
3481 Vload_path
= decode_env_path (0, normal
);
3482 if (!NILP (Vinstallation_directory
))
3484 Lisp_Object tem
, tem1
, sitelisp
;
3486 /* Remove site-lisp dirs from path temporarily and store
3487 them in sitelisp, then conc them on at the end so
3488 they're always first in path. */
3492 tem
= Fcar (Vload_path
);
3493 tem1
= Fstring_match (build_string ("site-lisp"),
3497 Vload_path
= Fcdr (Vload_path
);
3498 sitelisp
= Fcons (tem
, sitelisp
);
3504 /* Add to the path the lisp subdir of the
3505 installation dir, if it exists. */
3506 tem
= Fexpand_file_name (build_string ("lisp"),
3507 Vinstallation_directory
);
3508 tem1
= Ffile_exists_p (tem
);
3511 if (NILP (Fmember (tem
, Vload_path
)))
3513 turn_off_warning
= 1;
3514 Vload_path
= Fcons (tem
, Vload_path
);
3518 /* That dir doesn't exist, so add the build-time
3519 Lisp dirs instead. */
3520 Vload_path
= nconc2 (Vload_path
, dump_path
);
3522 /* Add leim under the installation dir, if it exists. */
3523 tem
= Fexpand_file_name (build_string ("leim"),
3524 Vinstallation_directory
);
3525 tem1
= Ffile_exists_p (tem
);
3528 if (NILP (Fmember (tem
, Vload_path
)))
3529 Vload_path
= Fcons (tem
, Vload_path
);
3532 /* Add site-list under the installation dir, if it exists. */
3533 tem
= Fexpand_file_name (build_string ("site-lisp"),
3534 Vinstallation_directory
);
3535 tem1
= Ffile_exists_p (tem
);
3538 if (NILP (Fmember (tem
, Vload_path
)))
3539 Vload_path
= Fcons (tem
, Vload_path
);
3542 /* If Emacs was not built in the source directory,
3543 and it is run from where it was built, add to load-path
3544 the lisp, leim and site-lisp dirs under that directory. */
3546 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
3550 tem
= Fexpand_file_name (build_string ("src/Makefile"),
3551 Vinstallation_directory
);
3552 tem1
= Ffile_exists_p (tem
);
3554 /* Don't be fooled if they moved the entire source tree
3555 AFTER dumping Emacs. If the build directory is indeed
3556 different from the source dir, src/Makefile.in and
3557 src/Makefile will not be found together. */
3558 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
3559 Vinstallation_directory
);
3560 tem2
= Ffile_exists_p (tem
);
3561 if (!NILP (tem1
) && NILP (tem2
))
3563 tem
= Fexpand_file_name (build_string ("lisp"),
3566 if (NILP (Fmember (tem
, Vload_path
)))
3567 Vload_path
= Fcons (tem
, Vload_path
);
3569 tem
= Fexpand_file_name (build_string ("leim"),
3572 if (NILP (Fmember (tem
, Vload_path
)))
3573 Vload_path
= Fcons (tem
, Vload_path
);
3575 tem
= Fexpand_file_name (build_string ("site-lisp"),
3578 if (NILP (Fmember (tem
, Vload_path
)))
3579 Vload_path
= Fcons (tem
, Vload_path
);
3582 if (!NILP (sitelisp
))
3583 Vload_path
= nconc2 (Fnreverse (sitelisp
), Vload_path
);
3589 /* NORMAL refers to the lisp dir in the source directory. */
3590 /* We used to add ../lisp at the front here, but
3591 that caused trouble because it was copied from dump_path
3592 into Vload_path, aboe, when Vinstallation_directory was non-nil.
3593 It should be unnecessary. */
3594 Vload_path
= decode_env_path (0, normal
);
3595 dump_path
= Vload_path
;
3600 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
3601 almost never correct, thereby causing a warning to be printed out that
3602 confuses users. Since PATH_LOADSEARCH is always overridden by the
3603 EMACSLOADPATH environment variable below, disable the warning on NT. */
3605 /* Warn if dirs in the *standard* path don't exist. */
3606 if (!turn_off_warning
)
3608 Lisp_Object path_tail
;
3610 for (path_tail
= Vload_path
;
3612 path_tail
= XCDR (path_tail
))
3614 Lisp_Object dirfile
;
3615 dirfile
= Fcar (path_tail
);
3616 if (STRINGP (dirfile
))
3618 dirfile
= Fdirectory_file_name (dirfile
);
3619 if (access (SDATA (dirfile
), 0) < 0)
3620 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
3625 #endif /* WINDOWSNT */
3627 /* If the EMACSLOADPATH environment variable is set, use its value.
3628 This doesn't apply if we're dumping. */
3630 if (NILP (Vpurify_flag
)
3631 && egetenv ("EMACSLOADPATH"))
3633 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
3637 load_in_progress
= 0;
3638 Vload_file_name
= Qnil
;
3640 load_descriptor_list
= Qnil
;
3642 Vstandard_input
= Qt
;
3643 Vloads_in_progress
= Qnil
;
3646 /* Print a warning, using format string FORMAT, that directory DIRNAME
3647 does not exist. Print it on stderr and put it in *Message*. */
3650 dir_warning (format
, dirname
)
3652 Lisp_Object dirname
;
3655 = (char *) alloca (SCHARS (dirname
) + strlen (format
) + 5);
3657 fprintf (stderr
, format
, SDATA (dirname
));
3658 sprintf (buffer
, format
, SDATA (dirname
));
3659 /* Don't log the warning before we've initialized!! */
3661 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
3668 defsubr (&Sread_from_string
);
3670 defsubr (&Sintern_soft
);
3671 defsubr (&Sunintern
);
3673 defsubr (&Seval_buffer
);
3674 defsubr (&Seval_region
);
3675 defsubr (&Sread_char
);
3676 defsubr (&Sread_char_exclusive
);
3677 defsubr (&Sread_event
);
3678 defsubr (&Sget_file_char
);
3679 defsubr (&Smapatoms
);
3680 defsubr (&Slocate_file_internal
);
3682 DEFVAR_LISP ("obarray", &Vobarray
,
3683 doc
: /* Symbol table for use by `intern' and `read'.
3684 It is a vector whose length ought to be prime for best results.
3685 The vector's contents don't make sense if examined from Lisp programs;
3686 to find all the symbols in an obarray, use `mapatoms'. */);
3688 DEFVAR_LISP ("values", &Vvalues
,
3689 doc
: /* List of values of all expressions which were read, evaluated and printed.
3690 Order is reverse chronological. */);
3692 DEFVAR_LISP ("standard-input", &Vstandard_input
,
3693 doc
: /* Stream for read to get input from.
3694 See documentation of `read' for possible values. */);
3695 Vstandard_input
= Qt
;
3697 DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions
,
3698 doc
: /* If non-nil, add position of read symbols to `read-symbol-positions-list'.
3700 If this variable is a buffer, then only forms read from that buffer
3701 will be added to `read-symbol-positions-list'.
3702 If this variable is t, then all read forms will be added.
3703 The effect of all other values other than nil are not currently
3704 defined, although they may be in the future.
3706 The positions are relative to the last call to `read' or
3707 `read-from-string'. It is probably a bad idea to set this variable at
3708 the toplevel; bind it instead. */);
3709 Vread_with_symbol_positions
= Qnil
;
3711 DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list
,
3712 doc
: /* An list mapping read symbols to their positions.
3713 This variable is modified during calls to `read' or
3714 `read-from-string', but only when `read-with-symbol-positions' is
3717 Each element of the list looks like (SYMBOL . CHAR-POSITION), where
3718 CHAR-POSITION is an integer giving the offset of that occurence of the
3719 symbol from the position where `read' or `read-from-string' started.
3721 Note that a symbol will appear multiple times in this list, if it was
3722 read multiple times. The list is in the same order as the symbols
3724 Vread_symbol_positions_list
= Qnil
;
3726 DEFVAR_LISP ("load-path", &Vload_path
,
3727 doc
: /* *List of directories to search for files to load.
3728 Each element is a string (directory name) or nil (try default directory).
3729 Initialized based on EMACSLOADPATH environment variable, if any,
3730 otherwise to default specified by file `epaths.h' when Emacs was built. */);
3732 DEFVAR_LISP ("load-suffixes", &Vload_suffixes
,
3733 doc
: /* *List of suffixes to try for files to load.
3734 This list should not include the empty string. */);
3735 Vload_suffixes
= Fcons (build_string (".elc"),
3736 Fcons (build_string (".el"), Qnil
));
3737 /* We don't use empty_string because it's not initialized yet. */
3738 default_suffixes
= Fcons (build_string (""), Qnil
);
3739 staticpro (&default_suffixes
);
3741 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
3742 doc
: /* Non-nil iff inside of `load'. */);
3744 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
3745 doc
: /* An alist of expressions to be evalled when particular files are loaded.
3746 Each element looks like (FILENAME FORMS...).
3747 When `load' is run and the file-name argument is FILENAME,
3748 the FORMS in the corresponding element are executed at the end of loading.
3750 FILENAME must match exactly! Normally FILENAME is the name of a library,
3751 with no directory specified, since that is how `load' is normally called.
3752 An error in FORMS does not undo the load,
3753 but does prevent execution of the rest of the FORMS.
3754 FILENAME can also be a symbol (a feature) and FORMS are then executed
3755 when the corresponding call to `provide' is made. */);
3756 Vafter_load_alist
= Qnil
;
3758 DEFVAR_LISP ("load-history", &Vload_history
,
3759 doc
: /* Alist mapping source file names to symbols and features.
3760 Each alist element is a list that starts with a file name,
3761 except for one element (optional) that starts with nil and describes
3762 definitions evaluated from buffers not visiting files.
3763 The remaining elements of each list are symbols defined as functions
3764 or variables, and cons cells `(provide . FEATURE)', `(require . FEATURE)',
3765 and `(autoload . SYMBOL)'. */);
3766 Vload_history
= Qnil
;
3768 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
3769 doc
: /* Full name of file being loaded by `load'. */);
3770 Vload_file_name
= Qnil
;
3772 DEFVAR_LISP ("user-init-file", &Vuser_init_file
,
3773 doc
: /* File name, including directory, of user's initialization file.
3774 If the file loaded had extension `.elc' and there was a corresponding `.el'
3775 file, this variable contains the name of the .el file, suitable for use
3776 by functions like `custom-save-all' which edit the init file. */);
3777 Vuser_init_file
= Qnil
;
3779 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
3780 doc
: /* Used for internal purposes by `load'. */);
3781 Vcurrent_load_list
= Qnil
;
3783 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
3784 doc
: /* Function used by `load' and `eval-region' for reading expressions.
3785 The default is nil, which means use the function `read'. */);
3786 Vload_read_function
= Qnil
;
3788 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
3789 doc
: /* Function called in `load' for loading an Emacs lisp source file.
3790 This function is for doing code conversion before reading the source file.
3791 If nil, loading is done without any code conversion.
3792 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where
3793 FULLNAME is the full name of FILE.
3794 See `load' for the meaning of the remaining arguments. */);
3795 Vload_source_file_function
= Qnil
;
3797 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
3798 doc
: /* Non-nil means `load' should force-load all dynamic doc strings.
3799 This is useful when the file being loaded is a temporary copy. */);
3800 load_force_doc_strings
= 0;
3802 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
3803 doc
: /* Non-nil means `read' converts strings to unibyte whenever possible.
3804 This is normally bound by `load' and `eval-buffer' to control `read',
3805 and is not meant for users to change. */);
3806 load_convert_to_unibyte
= 0;
3808 DEFVAR_LISP ("source-directory", &Vsource_directory
,
3809 doc
: /* Directory in which Emacs sources were found when Emacs was built.
3810 You cannot count on them to still be there! */);
3812 = Fexpand_file_name (build_string ("../"),
3813 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3815 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3816 doc
: /* List of files that were preloaded (when dumping Emacs). */);
3817 Vpreloaded_file_list
= Qnil
;
3819 DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars
,
3820 doc
: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */);
3821 Vbyte_boolean_vars
= Qnil
;
3823 DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries
,
3824 doc
: /* Non-nil means load dangerous compiled Lisp files.
3825 Some versions of XEmacs use different byte codes than Emacs. These
3826 incompatible byte codes can make Emacs crash when it tries to execute
3828 load_dangerous_libraries
= 0;
3830 DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp
,
3831 doc
: /* Regular expression matching safe to load compiled Lisp files.
3832 When Emacs loads a compiled Lisp file, it reads the first 512 bytes
3833 from the file, and matches them against this regular expression.
3834 When the regular expression matches, the file is considered to be safe
3835 to load. See also `load-dangerous-libraries'. */);
3836 Vbytecomp_version_regexp
3837 = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
3839 /* Vsource_directory was initialized in init_lread. */
3841 load_descriptor_list
= Qnil
;
3842 staticpro (&load_descriptor_list
);
3844 Qcurrent_load_list
= intern ("current-load-list");
3845 staticpro (&Qcurrent_load_list
);
3847 Qstandard_input
= intern ("standard-input");
3848 staticpro (&Qstandard_input
);
3850 Qread_char
= intern ("read-char");
3851 staticpro (&Qread_char
);
3853 Qget_file_char
= intern ("get-file-char");
3854 staticpro (&Qget_file_char
);
3856 Qbackquote
= intern ("`");
3857 staticpro (&Qbackquote
);
3858 Qcomma
= intern (",");
3859 staticpro (&Qcomma
);
3860 Qcomma_at
= intern (",@");
3861 staticpro (&Qcomma_at
);
3862 Qcomma_dot
= intern (",.");
3863 staticpro (&Qcomma_dot
);
3865 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
3866 staticpro (&Qinhibit_file_name_operation
);
3868 Qascii_character
= intern ("ascii-character");
3869 staticpro (&Qascii_character
);
3871 Qfunction
= intern ("function");
3872 staticpro (&Qfunction
);
3874 Qload
= intern ("load");
3877 Qload_file_name
= intern ("load-file-name");
3878 staticpro (&Qload_file_name
);
3880 staticpro (&dump_path
);
3882 staticpro (&read_objects
);
3883 read_objects
= Qnil
;
3884 staticpro (&seen_list
);
3886 Vloads_in_progress
= Qnil
;
3887 staticpro (&Vloads_in_progress
);