1 /* Lisp parsing and input streams.
2 Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993, 1994, 1995,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
26 #include <sys/types.h>
31 #include "intervals.h"
38 #include "termhooks.h"
42 #include <sys/inode.h>
47 #include <unistd.h> /* to get X_OK */
64 #endif /* HAVE_SETLOCALE */
74 #define file_offset off_t
75 #define file_tell ftello
77 #define file_offset long
78 #define file_tell ftell
85 Lisp_Object Qread_char
, Qget_file_char
, Qstandard_input
, Qcurrent_load_list
;
86 Lisp_Object Qvariable_documentation
, Vvalues
, Vstandard_input
, Vafter_load_alist
;
87 Lisp_Object Qascii_character
, Qload
, Qload_file_name
;
88 Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
89 Lisp_Object Qinhibit_file_name_operation
;
90 Lisp_Object Qeval_buffer_list
, Veval_buffer_list
;
92 extern Lisp_Object Qevent_symbol_element_mask
;
93 extern Lisp_Object Qfile_exists_p
;
95 /* non-zero iff inside `load' */
98 /* Directory in which the sources were found. */
99 Lisp_Object Vsource_directory
;
101 /* Search path and suffixes for files to be loaded. */
102 Lisp_Object Vload_path
, Vload_suffixes
, default_suffixes
;
104 /* File name of user's init file. */
105 Lisp_Object Vuser_init_file
;
107 /* This is the user-visible association list that maps features to
108 lists of defs in their load files. */
109 Lisp_Object Vload_history
;
111 /* This is used to build the load history. */
112 Lisp_Object Vcurrent_load_list
;
114 /* List of files that were preloaded. */
115 Lisp_Object Vpreloaded_file_list
;
117 /* Name of file actually being read by `load'. */
118 Lisp_Object Vload_file_name
;
120 /* Function to use for reading, in `load' and friends. */
121 Lisp_Object Vload_read_function
;
123 /* The association list of objects read with the #n=object form.
124 Each member of the list has the form (n . object), and is used to
125 look up the object for the corresponding #n# construct.
126 It must be set to nil before all top-level calls to read0. */
127 Lisp_Object read_objects
;
129 /* Nonzero means load should forcibly load all dynamic doc strings. */
130 static int load_force_doc_strings
;
132 /* Nonzero means read should convert strings to unibyte. */
133 static int load_convert_to_unibyte
;
135 /* Function to use for loading an Emacs lisp source file (not
136 compiled) instead of readevalloop. */
137 Lisp_Object Vload_source_file_function
;
139 /* List of all DEFVAR_BOOL variables. Used by the byte optimizer. */
140 Lisp_Object Vbyte_boolean_vars
;
142 /* Whether or not to add a `read-positions' property to symbols
144 Lisp_Object Vread_with_symbol_positions
;
146 /* List of (SYMBOL . POSITION) accumulated so far. */
147 Lisp_Object Vread_symbol_positions_list
;
149 /* List of descriptors now open for Fload. */
150 static Lisp_Object load_descriptor_list
;
152 /* File for get_file_char to read from. Use by load. */
153 static FILE *instream
;
155 /* When nonzero, read conses in pure space */
156 static int read_pure
;
158 /* For use within read-from-string (this reader is non-reentrant!!) */
159 static int read_from_string_index
;
160 static int read_from_string_index_byte
;
161 static int read_from_string_limit
;
163 /* Number of bytes left to read in the buffer character
164 that `readchar' has already advanced over. */
165 static int readchar_backlog
;
166 /* Number of characters read in the current call to Fread or
167 Fread_from_string. */
168 static int readchar_count
;
170 /* This contains the last string skipped with #@. */
171 static char *saved_doc_string
;
172 /* Length of buffer allocated in saved_doc_string. */
173 static int saved_doc_string_size
;
174 /* Length of actual data in saved_doc_string. */
175 static int saved_doc_string_length
;
176 /* This is the file position that string came from. */
177 static file_offset saved_doc_string_position
;
179 /* This contains the previous string skipped with #@.
180 We copy it from saved_doc_string when a new string
181 is put in saved_doc_string. */
182 static char *prev_saved_doc_string
;
183 /* Length of buffer allocated in prev_saved_doc_string. */
184 static int prev_saved_doc_string_size
;
185 /* Length of actual data in prev_saved_doc_string. */
186 static int prev_saved_doc_string_length
;
187 /* This is the file position that string came from. */
188 static file_offset prev_saved_doc_string_position
;
190 /* Nonzero means inside a new-style backquote
191 with no surrounding parentheses.
192 Fread initializes this to zero, so we need not specbind it
193 or worry about what happens to it when there is an error. */
194 static int new_backquote_flag
;
196 /* A list of file names for files being loaded in Fload. Used to
197 check for recursive loads. */
199 static Lisp_Object Vloads_in_progress
;
201 /* Non-zero means load dangerous compiled Lisp files. */
203 int load_dangerous_libraries
;
205 /* A regular expression used to detect files compiled with Emacs. */
207 static Lisp_Object Vbytecomp_version_regexp
;
209 static void to_multibyte
P_ ((char **, char **, int *));
210 static void readevalloop
P_ ((Lisp_Object
, FILE*, Lisp_Object
,
211 Lisp_Object (*) (), int,
212 Lisp_Object
, Lisp_Object
,
213 Lisp_Object
, Lisp_Object
));
214 static Lisp_Object load_unwind
P_ ((Lisp_Object
));
215 static Lisp_Object load_descriptor_unwind
P_ ((Lisp_Object
));
218 /* Handle unreading and rereading of characters.
219 Write READCHAR to read a character,
220 UNREAD(c) to unread c to be read again.
222 The READCHAR and UNREAD macros are meant for reading/unreading a
223 byte code; they do not handle multibyte characters. The caller
224 should manage them if necessary.
226 [ Actually that seems to be a lie; READCHAR will definitely read
227 multibyte characters from buffer sources, at least. Is the
228 comment just out of date?
229 -- Colin Walters <walters@gnu.org>, 22 May 2002 16:36:50 -0400 ]
232 #define READCHAR readchar (readcharfun)
233 #define UNREAD(c) unreadchar (readcharfun, c)
236 readchar (readcharfun
)
237 Lisp_Object readcharfun
;
244 if (BUFFERP (readcharfun
))
246 register struct buffer
*inbuffer
= XBUFFER (readcharfun
);
248 int pt_byte
= BUF_PT_BYTE (inbuffer
);
249 int orig_pt_byte
= pt_byte
;
251 if (readchar_backlog
> 0)
252 /* We get the address of the byte just passed,
253 which is the last byte of the character.
254 The other bytes in this character are consecutive with it,
255 because the gap can't be in the middle of a character. */
256 return *(BUF_BYTE_ADDRESS (inbuffer
, BUF_PT_BYTE (inbuffer
) - 1)
257 - --readchar_backlog
);
259 if (pt_byte
>= BUF_ZV_BYTE (inbuffer
))
262 readchar_backlog
= -1;
264 if (! NILP (inbuffer
->enable_multibyte_characters
))
266 /* Fetch the character code from the buffer. */
267 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, pt_byte
);
268 BUF_INC_POS (inbuffer
, pt_byte
);
269 c
= STRING_CHAR (p
, pt_byte
- orig_pt_byte
);
273 c
= BUF_FETCH_BYTE (inbuffer
, pt_byte
);
276 SET_BUF_PT_BOTH (inbuffer
, BUF_PT (inbuffer
) + 1, pt_byte
);
280 if (MARKERP (readcharfun
))
282 register struct buffer
*inbuffer
= XMARKER (readcharfun
)->buffer
;
284 int bytepos
= marker_byte_position (readcharfun
);
285 int orig_bytepos
= bytepos
;
287 if (readchar_backlog
> 0)
288 /* We get the address of the byte just passed,
289 which is the last byte of the character.
290 The other bytes in this character are consecutive with it,
291 because the gap can't be in the middle of a character. */
292 return *(BUF_BYTE_ADDRESS (inbuffer
, XMARKER (readcharfun
)->bytepos
- 1)
293 - --readchar_backlog
);
295 if (bytepos
>= BUF_ZV_BYTE (inbuffer
))
298 readchar_backlog
= -1;
300 if (! NILP (inbuffer
->enable_multibyte_characters
))
302 /* Fetch the character code from the buffer. */
303 unsigned char *p
= BUF_BYTE_ADDRESS (inbuffer
, bytepos
);
304 BUF_INC_POS (inbuffer
, bytepos
);
305 c
= STRING_CHAR (p
, bytepos
- orig_bytepos
);
309 c
= BUF_FETCH_BYTE (inbuffer
, bytepos
);
313 XMARKER (readcharfun
)->bytepos
= bytepos
;
314 XMARKER (readcharfun
)->charpos
++;
319 if (EQ (readcharfun
, Qlambda
))
320 return read_bytecode_char (0);
322 if (EQ (readcharfun
, Qget_file_char
))
326 /* Interrupted reads have been observed while reading over the network */
327 while (c
== EOF
&& ferror (instream
) && errno
== EINTR
)
337 if (STRINGP (readcharfun
))
339 if (read_from_string_index
>= read_from_string_limit
)
342 FETCH_STRING_CHAR_ADVANCE (c
, readcharfun
,
343 read_from_string_index
,
344 read_from_string_index_byte
);
349 tem
= call0 (readcharfun
);
356 /* Unread the character C in the way appropriate for the stream READCHARFUN.
357 If the stream is a user function, call it with the char as argument. */
360 unreadchar (readcharfun
, c
)
361 Lisp_Object readcharfun
;
366 /* Don't back up the pointer if we're unreading the end-of-input mark,
367 since readchar didn't advance it when we read it. */
369 else if (BUFFERP (readcharfun
))
371 struct buffer
*b
= XBUFFER (readcharfun
);
372 int bytepos
= BUF_PT_BYTE (b
);
374 if (readchar_backlog
>= 0)
379 if (! NILP (b
->enable_multibyte_characters
))
380 BUF_DEC_POS (b
, bytepos
);
384 BUF_PT_BYTE (b
) = bytepos
;
387 else if (MARKERP (readcharfun
))
389 struct buffer
*b
= XMARKER (readcharfun
)->buffer
;
390 int bytepos
= XMARKER (readcharfun
)->bytepos
;
392 if (readchar_backlog
>= 0)
396 XMARKER (readcharfun
)->charpos
--;
397 if (! NILP (b
->enable_multibyte_characters
))
398 BUF_DEC_POS (b
, bytepos
);
402 XMARKER (readcharfun
)->bytepos
= bytepos
;
405 else if (STRINGP (readcharfun
))
407 read_from_string_index
--;
408 read_from_string_index_byte
409 = string_char_to_byte (readcharfun
, read_from_string_index
);
411 else if (EQ (readcharfun
, Qlambda
))
412 read_bytecode_char (1);
413 else if (EQ (readcharfun
, Qget_file_char
))
414 ungetc (c
, instream
);
416 call1 (readcharfun
, make_number (c
));
419 static Lisp_Object read_internal_start
P_ ((Lisp_Object
, Lisp_Object
,
421 static Lisp_Object read0
P_ ((Lisp_Object
));
422 static Lisp_Object read1
P_ ((Lisp_Object
, int *, int));
424 static Lisp_Object read_list
P_ ((int, Lisp_Object
));
425 static Lisp_Object read_vector
P_ ((Lisp_Object
, int));
426 static int read_multibyte
P_ ((int, Lisp_Object
));
428 static Lisp_Object substitute_object_recurse
P_ ((Lisp_Object
, Lisp_Object
,
430 static void substitute_object_in_subtree
P_ ((Lisp_Object
,
432 static void substitute_in_interval
P_ ((INTERVAL
, Lisp_Object
));
435 /* Get a character from the tty. */
437 extern Lisp_Object
read_char ();
439 /* Read input events until we get one that's acceptable for our purposes.
441 If NO_SWITCH_FRAME is non-zero, switch-frame events are stashed
442 until we get a character we like, and then stuffed into
445 If ASCII_REQUIRED is non-zero, we check function key events to see
446 if the unmodified version of the symbol has a Qascii_character
447 property, and use that character, if present.
449 If ERROR_NONASCII is non-zero, we signal an error if the input we
450 get isn't an ASCII character with modifiers. If it's zero but
451 ASCII_REQUIRED is non-zero, we just re-read until we get an ASCII
454 If INPUT_METHOD is nonzero, we invoke the current input method
455 if the character warrants that. */
458 read_filtered_event (no_switch_frame
, ascii_required
, error_nonascii
,
460 int no_switch_frame
, ascii_required
, error_nonascii
, input_method
;
462 register Lisp_Object val
, delayed_switch_frame
;
464 #ifdef HAVE_WINDOW_SYSTEM
465 if (display_hourglass_p
)
469 delayed_switch_frame
= Qnil
;
471 /* Read until we get an acceptable event. */
473 val
= read_char (0, 0, 0,
474 (input_method
? Qnil
: Qt
),
480 /* switch-frame events are put off until after the next ASCII
481 character. This is better than signaling an error just because
482 the last characters were typed to a separate minibuffer frame,
483 for example. Eventually, some code which can deal with
484 switch-frame events will read it and process it. */
486 && EVENT_HAS_PARAMETERS (val
)
487 && EQ (EVENT_HEAD (val
), Qswitch_frame
))
489 delayed_switch_frame
= val
;
495 /* Convert certain symbols to their ASCII equivalents. */
498 Lisp_Object tem
, tem1
;
499 tem
= Fget (val
, Qevent_symbol_element_mask
);
502 tem1
= Fget (Fcar (tem
), Qascii_character
);
503 /* Merge this symbol's modifier bits
504 with the ASCII equivalent of its basic code. */
506 XSETFASTINT (val
, XINT (tem1
) | XINT (Fcar (Fcdr (tem
))));
510 /* If we don't have a character now, deal with it appropriately. */
515 Vunread_command_events
= Fcons (val
, Qnil
);
516 error ("Non-character input-event");
523 if (! NILP (delayed_switch_frame
))
524 unread_switch_frame
= delayed_switch_frame
;
528 #ifdef HAVE_WINDOW_SYSTEM
529 if (display_hourglass_p
)
538 DEFUN ("read-char", Fread_char
, Sread_char
, 0, 2, 0,
539 doc
: /* Read a character from the command input (keyboard or macro).
540 It is returned as a number.
541 If the user generates an event which is not a character (i.e. a mouse
542 click or function key event), `read-char' signals an error. As an
543 exception, switch-frame events are put off until non-ASCII events can
545 If you want to read non-character events, or ignore them, call
546 `read-event' or `read-char-exclusive' instead.
548 If the optional argument PROMPT is non-nil, display that as a prompt.
549 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
550 input method is turned on in the current buffer, that input method
551 is used for reading a character. */)
552 (prompt
, inherit_input_method
)
553 Lisp_Object prompt
, inherit_input_method
;
556 message_with_string ("%s", prompt
, 0);
557 return read_filtered_event (1, 1, 1, ! NILP (inherit_input_method
));
560 DEFUN ("read-event", Fread_event
, Sread_event
, 0, 2, 0,
561 doc
: /* Read an event object from the input stream.
562 If the optional argument PROMPT is non-nil, display that as a prompt.
563 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
564 input method is turned on in the current buffer, that input method
565 is used for reading a character. */)
566 (prompt
, inherit_input_method
)
567 Lisp_Object prompt
, inherit_input_method
;
570 message_with_string ("%s", prompt
, 0);
571 return read_filtered_event (0, 0, 0, ! NILP (inherit_input_method
));
574 DEFUN ("read-char-exclusive", Fread_char_exclusive
, Sread_char_exclusive
, 0, 2, 0,
575 doc
: /* Read a character from the command input (keyboard or macro).
576 It is returned as a number. Non-character events are ignored.
578 If the optional argument PROMPT is non-nil, display that as a prompt.
579 If the optional argument INHERIT-INPUT-METHOD is non-nil and some
580 input method is turned on in the current buffer, that input method
581 is used for reading a character. */)
582 (prompt
, inherit_input_method
)
583 Lisp_Object prompt
, inherit_input_method
;
586 message_with_string ("%s", prompt
, 0);
587 return read_filtered_event (1, 1, 0, ! NILP (inherit_input_method
));
590 DEFUN ("get-file-char", Fget_file_char
, Sget_file_char
, 0, 0, 0,
591 doc
: /* Don't use this yourself. */)
594 register Lisp_Object val
;
595 XSETINT (val
, getc (instream
));
601 /* Value is non-zero if the file asswociated with file descriptor FD
602 is a compiled Lisp file that's safe to load. Only files compiled
603 with Emacs are safe to load. Files compiled with XEmacs can lead
604 to a crash in Fbyte_code because of an incompatible change in the
615 /* Read the first few bytes from the file, and look for a line
616 specifying the byte compiler version used. */
617 nbytes
= emacs_read (fd
, buf
, sizeof buf
- 1);
622 /* Skip to the next newline, skipping over the initial `ELC'
623 with NUL bytes following it. */
624 for (i
= 0; i
< nbytes
&& buf
[i
] != '\n'; ++i
)
628 && fast_c_string_match_ignore_case (Vbytecomp_version_regexp
,
633 lseek (fd
, 0, SEEK_SET
);
638 /* Callback for record_unwind_protect. Restore the old load list OLD,
639 after loading a file successfully. */
642 record_load_unwind (old
)
645 return Vloads_in_progress
= old
;
648 /* This handler function is used via internal_condition_case_1. */
651 load_error_handler (data
)
657 DEFUN ("load", Fload
, Sload
, 1, 5, 0,
658 doc
: /* Execute a file of Lisp code named FILE.
659 First try FILE with `.elc' appended, then try with `.el',
660 then try FILE unmodified (the exact suffixes are determined by
661 `load-suffixes'). Environment variable references in FILE
662 are replaced with their values by calling `substitute-in-file-name'.
663 This function searches the directories in `load-path'.
664 If optional second arg NOERROR is non-nil,
665 report no error if FILE doesn't exist.
666 Print messages at start and end of loading unless
667 optional third arg NOMESSAGE is non-nil.
668 If optional fourth arg NOSUFFIX is non-nil, don't try adding
669 suffixes `.elc' or `.el' to the specified name FILE.
670 If optional fifth arg MUST-SUFFIX is non-nil, insist on
671 the suffix `.elc' or `.el'; don't accept just FILE unless
672 it ends in one of those suffixes or includes a directory name.
674 Loading a file records its definitions, and its `provide' and
675 `require' calls, in an element of `load-history' whose
676 car is the file name loaded. See `load-history'.
678 Return t if file exists. */)
679 (file
, noerror
, nomessage
, nosuffix
, must_suffix
)
680 Lisp_Object file
, noerror
, nomessage
, nosuffix
, must_suffix
;
682 register FILE *stream
;
683 register int fd
= -1;
684 int count
= SPECPDL_INDEX ();
686 struct gcpro gcpro1
, gcpro2
;
687 Lisp_Object found
, efound
;
688 /* 1 means we printed the ".el is newer" message. */
690 /* 1 means we are loading a compiled file. */
701 /* If file name is magic, call the handler. */
702 /* This shouldn't be necessary any more now that `openp' handles it right.
703 handler = Ffind_file_name_handler (file, Qload);
705 return call5 (handler, Qload, file, noerror, nomessage, nosuffix); */
707 /* Do this after the handler to avoid
708 the need to gcpro noerror, nomessage and nosuffix.
709 (Below here, we care only whether they are nil or not.)
710 The presence of this call is the result of a historical accident:
711 it used to be in every file-operations and when it got removed
712 everywhere, it accidentally stayed here. Since then, enough people
713 supposedly have things like (load "$PROJECT/foo.el") in their .emacs
714 that it seemed risky to remove. */
715 if (! NILP (noerror
))
717 file
= internal_condition_case_1 (Fsubstitute_in_file_name
, file
,
718 Qt
, load_error_handler
);
723 file
= Fsubstitute_in_file_name (file
);
726 /* Avoid weird lossage with null string as arg,
727 since it would try to load a directory as a Lisp file */
728 if (SCHARS (file
) > 0)
730 int size
= SBYTES (file
);
734 GCPRO2 (file
, found
);
736 if (! NILP (must_suffix
))
738 /* Don't insist on adding a suffix if FILE already ends with one. */
740 && !strcmp (SDATA (file
) + size
- 3, ".el"))
743 && !strcmp (SDATA (file
) + size
- 4, ".elc"))
745 /* Don't insist on adding a suffix
746 if the argument includes a directory name. */
747 else if (! NILP (Ffile_name_directory (file
)))
751 fd
= openp (Vload_path
, file
,
752 (!NILP (nosuffix
) ? Qnil
753 : !NILP (must_suffix
) ? Vload_suffixes
754 : Fappend (2, (tmp
[0] = Vload_suffixes
,
755 tmp
[1] = default_suffixes
,
764 Fsignal (Qfile_error
, Fcons (build_string ("Cannot open load file"),
765 Fcons (file
, Qnil
)));
770 /* Tell startup.el whether or not we found the user's init file. */
771 if (EQ (Qt
, Vuser_init_file
))
772 Vuser_init_file
= found
;
774 /* If FD is -2, that means openp found a magic file. */
777 if (NILP (Fequal (found
, file
)))
778 /* If FOUND is a different file name from FILE,
779 find its handler even if we have already inhibited
780 the `load' operation on FILE. */
781 handler
= Ffind_file_name_handler (found
, Qt
);
783 handler
= Ffind_file_name_handler (found
, Qload
);
784 if (! NILP (handler
))
785 return call5 (handler
, Qload
, found
, noerror
, nomessage
, Qt
);
788 /* Check if we're stuck in a recursive load cycle.
790 2000-09-21: It's not possible to just check for the file loaded
791 being a member of Vloads_in_progress. This fails because of the
792 way the byte compiler currently works; `provide's are not
793 evaluted, see font-lock.el/jit-lock.el as an example. This
794 leads to a certain amount of ``normal'' recursion.
796 Also, just loading a file recursively is not always an error in
797 the general case; the second load may do something different. */
801 for (tem
= Vloads_in_progress
; CONSP (tem
); tem
= XCDR (tem
))
802 if (!NILP (Fequal (found
, XCAR (tem
))))
805 Fsignal (Qerror
, Fcons (build_string ("Recursive load"),
806 Fcons (found
, Vloads_in_progress
)));
807 record_unwind_protect (record_load_unwind
, Vloads_in_progress
);
808 Vloads_in_progress
= Fcons (found
, Vloads_in_progress
);
811 if (!bcmp (SDATA (found
) + SBYTES (found
) - 4,
813 /* Load .elc files directly, but not when they are
814 remote and have no handler! */
821 GCPRO2 (file
, found
);
823 if (!safe_to_load_p (fd
))
826 if (!load_dangerous_libraries
)
830 error ("File `%s' was not compiled in Emacs",
833 else if (!NILP (nomessage
))
834 message_with_string ("File `%s' not compiled in Emacs", found
, 1);
839 efound
= ENCODE_FILE (found
);
844 stat ((char *)SDATA (efound
), &s1
);
845 SSET (efound
, SBYTES (efound
) - 1, 0);
846 result
= stat ((char *)SDATA (efound
), &s2
);
847 SSET (efound
, SBYTES (efound
) - 1, 'c');
849 if (result
>= 0 && (unsigned) s1
.st_mtime
< (unsigned) s2
.st_mtime
)
851 /* Make the progress messages mention that source is newer. */
854 /* If we won't print another message, mention this anyway. */
855 if (!NILP (nomessage
))
857 Lisp_Object msg_file
;
858 msg_file
= Fsubstring (found
, make_number (0), make_number (-1));
859 message_with_string ("Source file `%s' newer than byte-compiled file",
868 /* We are loading a source file (*.el). */
869 if (!NILP (Vload_source_file_function
))
875 val
= call4 (Vload_source_file_function
, found
, file
,
876 NILP (noerror
) ? Qnil
: Qt
,
877 NILP (nomessage
) ? Qnil
: Qt
);
878 return unbind_to (count
, val
);
882 GCPRO2 (file
, found
);
886 efound
= ENCODE_FILE (found
);
887 stream
= fopen ((char *) SDATA (efound
), fmode
);
888 #else /* not WINDOWSNT */
889 stream
= fdopen (fd
, fmode
);
890 #endif /* not WINDOWSNT */
894 error ("Failure to create stdio stream for %s", SDATA (file
));
897 if (! NILP (Vpurify_flag
))
898 Vpreloaded_file_list
= Fcons (file
, Vpreloaded_file_list
);
900 if (NILP (nomessage
))
903 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...",
906 message_with_string ("Loading %s (source)...", file
, 1);
908 message_with_string ("Loading %s (compiled; note, source file is newer)...",
910 else /* The typical case; compiled file newer than source file. */
911 message_with_string ("Loading %s...", file
, 1);
914 record_unwind_protect (load_unwind
, make_save_value (stream
, 0));
915 record_unwind_protect (load_descriptor_unwind
, load_descriptor_list
);
916 specbind (Qload_file_name
, found
);
917 specbind (Qinhibit_file_name_operation
, Qnil
);
919 = Fcons (make_number (fileno (stream
)), load_descriptor_list
);
921 readevalloop (Qget_file_char
, stream
, (! NILP (Vpurify_flag
) ? file
: found
),
922 Feval
, 0, Qnil
, Qnil
, Qnil
, Qnil
);
923 unbind_to (count
, Qnil
);
925 /* Run any load-hooks for this file. */
926 temp
= Fassoc (file
, Vafter_load_alist
);
928 Fprogn (Fcdr (temp
));
931 if (saved_doc_string
)
932 free (saved_doc_string
);
933 saved_doc_string
= 0;
934 saved_doc_string_size
= 0;
936 if (prev_saved_doc_string
)
937 xfree (prev_saved_doc_string
);
938 prev_saved_doc_string
= 0;
939 prev_saved_doc_string_size
= 0;
941 if (!noninteractive
&& NILP (nomessage
))
944 message_with_string ("Loading %s (compiled; note unsafe, not compiled in Emacs)...done",
947 message_with_string ("Loading %s (source)...done", file
, 1);
949 message_with_string ("Loading %s (compiled; note, source file is newer)...done",
951 else /* The typical case; compiled file newer than source file. */
952 message_with_string ("Loading %s...done", file
, 1);
955 if (!NILP (Fequal (build_string ("obsolete"),
956 Ffile_name_nondirectory
957 (Fdirectory_file_name (Ffile_name_directory (found
))))))
958 message_with_string ("Package %s is obsolete", file
, 1);
964 load_unwind (arg
) /* used as unwind-protect function in load */
967 FILE *stream
= (FILE *) XSAVE_VALUE (arg
)->pointer
;
970 if (--load_in_progress
< 0) load_in_progress
= 0;
975 load_descriptor_unwind (oldlist
)
978 load_descriptor_list
= oldlist
;
982 /* Close all descriptors in use for Floads.
983 This is used when starting a subprocess. */
990 for (tail
= load_descriptor_list
; !NILP (tail
); tail
= XCDR (tail
))
991 emacs_close (XFASTINT (XCAR (tail
)));
996 complete_filename_p (pathname
)
997 Lisp_Object pathname
;
999 register const unsigned char *s
= SDATA (pathname
);
1000 return (IS_DIRECTORY_SEP (s
[0])
1001 || (SCHARS (pathname
) > 2
1002 && IS_DEVICE_SEP (s
[1]) && IS_DIRECTORY_SEP (s
[2]))
1012 DEFUN ("locate-file-internal", Flocate_file_internal
, Slocate_file_internal
, 2, 4, 0,
1013 doc
: /* Search for FILENAME through PATH.
1014 Returns the file's name in absolute form, or nil if not found.
1015 If SUFFIXES is non-nil, it should be a list of suffixes to append to
1016 file name when searching.
1017 If non-nil, PREDICATE is used instead of `file-readable-p'.
1018 PREDICATE can also be an integer to pass to the access(2) function,
1019 in which case file-name-handlers are ignored. */)
1020 (filename
, path
, suffixes
, predicate
)
1021 Lisp_Object filename
, path
, suffixes
, predicate
;
1024 int fd
= openp (path
, filename
, suffixes
, &file
, predicate
);
1025 if (NILP (predicate
) && fd
> 0)
1031 /* Search for a file whose name is STR, looking in directories
1032 in the Lisp list PATH, and trying suffixes from SUFFIX.
1033 On success, returns a file descriptor. On failure, returns -1.
1035 SUFFIXES is a list of strings containing possible suffixes.
1036 The empty suffix is automatically added iff the list is empty.
1038 PREDICATE non-nil means don't open the files,
1039 just look for one that satisfies the predicate. In this case,
1040 returns 1 on success. The predicate can be a lisp function or
1041 an integer to pass to `access' (in which case file-name-handlers
1044 If STOREPTR is nonzero, it points to a slot where the name of
1045 the file actually found should be stored as a Lisp string.
1046 nil is stored there on failure.
1048 If the file we find is remote, return -2
1049 but store the found remote file name in *STOREPTR. */
1052 openp (path
, str
, suffixes
, storeptr
, predicate
)
1053 Lisp_Object path
, str
;
1054 Lisp_Object suffixes
;
1055 Lisp_Object
*storeptr
;
1056 Lisp_Object predicate
;
1061 register char *fn
= buf
;
1064 Lisp_Object filename
;
1066 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
, gcpro6
;
1067 Lisp_Object string
, tail
, encoded_fn
;
1068 int max_suffix_len
= 0;
1072 for (tail
= suffixes
; CONSP (tail
); tail
= XCDR (tail
))
1074 CHECK_STRING_CAR (tail
);
1075 max_suffix_len
= max (max_suffix_len
,
1076 SBYTES (XCAR (tail
)));
1079 string
= filename
= Qnil
;
1080 GCPRO6 (str
, string
, filename
, path
, suffixes
, encoded_fn
);
1085 if (complete_filename_p (str
))
1088 for (; CONSP (path
); path
= XCDR (path
))
1090 filename
= Fexpand_file_name (str
, XCAR (path
));
1091 if (!complete_filename_p (filename
))
1092 /* If there are non-absolute elts in PATH (eg ".") */
1093 /* Of course, this could conceivably lose if luser sets
1094 default-directory to be something non-absolute... */
1096 filename
= Fexpand_file_name (filename
, current_buffer
->directory
);
1097 if (!complete_filename_p (filename
))
1098 /* Give up on this path element! */
1102 /* Calculate maximum size of any filename made from
1103 this path element/specified file name and any possible suffix. */
1104 want_size
= max_suffix_len
+ SBYTES (filename
) + 1;
1105 if (fn_size
< want_size
)
1106 fn
= (char *) alloca (fn_size
= 100 + want_size
);
1108 /* Loop over suffixes. */
1109 for (tail
= NILP (suffixes
) ? default_suffixes
: suffixes
;
1110 CONSP (tail
); tail
= XCDR (tail
))
1112 int lsuffix
= SBYTES (XCAR (tail
));
1113 Lisp_Object handler
;
1116 /* Concatenate path element/specified name with the suffix.
1117 If the directory starts with /:, remove that. */
1118 if (SCHARS (filename
) > 2
1119 && SREF (filename
, 0) == '/'
1120 && SREF (filename
, 1) == ':')
1122 strncpy (fn
, SDATA (filename
) + 2,
1123 SBYTES (filename
) - 2);
1124 fn
[SBYTES (filename
) - 2] = 0;
1128 strncpy (fn
, SDATA (filename
),
1130 fn
[SBYTES (filename
)] = 0;
1133 if (lsuffix
!= 0) /* Bug happens on CCI if lsuffix is 0. */
1134 strncat (fn
, SDATA (XCAR (tail
)), lsuffix
);
1136 /* Check that the file exists and is not a directory. */
1137 /* We used to only check for handlers on non-absolute file names:
1141 handler = Ffind_file_name_handler (filename, Qfile_exists_p);
1142 It's not clear why that was the case and it breaks things like
1143 (load "/bar.el") where the file is actually "/bar.el.gz". */
1144 string
= build_string (fn
);
1145 handler
= Ffind_file_name_handler (string
, Qfile_exists_p
);
1146 if ((!NILP (handler
) || !NILP (predicate
)) && !NATNUMP (predicate
))
1148 if (NILP (predicate
))
1149 exists
= !NILP (Ffile_readable_p (string
));
1151 exists
= !NILP (call1 (predicate
, string
));
1152 if (exists
&& !NILP (Ffile_directory_p (string
)))
1157 /* We succeeded; return this descriptor and filename. */
1168 encoded_fn
= ENCODE_FILE (string
);
1169 pfn
= SDATA (encoded_fn
);
1170 exists
= (stat (pfn
, &st
) >= 0
1171 && (st
.st_mode
& S_IFMT
) != S_IFDIR
);
1174 /* Check that we can access or open it. */
1175 if (NATNUMP (predicate
))
1176 fd
= (access (pfn
, XFASTINT (predicate
)) == 0) ? 1 : -1;
1178 fd
= emacs_open (pfn
, O_RDONLY
, 0);
1182 /* We succeeded; return this descriptor and filename. */
1200 /* Merge the list we've accumulated of globals from the current input source
1201 into the load_history variable. The details depend on whether
1202 the source has an associated file name or not. */
1205 build_load_history (stream
, source
)
1209 register Lisp_Object tail
, prev
, newelt
;
1210 register Lisp_Object tem
, tem2
;
1211 register int foundit
, loading
;
1213 loading
= stream
|| !NARROWED
;
1215 tail
= Vload_history
;
1218 while (CONSP (tail
))
1222 /* Find the feature's previous assoc list... */
1223 if (!NILP (Fequal (source
, Fcar (tem
))))
1227 /* If we're loading, remove it. */
1231 Vload_history
= XCDR (tail
);
1233 Fsetcdr (prev
, XCDR (tail
));
1236 /* Otherwise, cons on new symbols that are not already members. */
1239 tem2
= Vcurrent_load_list
;
1241 while (CONSP (tem2
))
1243 newelt
= XCAR (tem2
);
1245 if (NILP (Fmember (newelt
, tem
)))
1246 Fsetcar (tail
, Fcons (XCAR (tem
),
1247 Fcons (newelt
, XCDR (tem
))));
1260 /* If we're loading, cons the new assoc onto the front of load-history,
1261 the most-recently-loaded position. Also do this if we didn't find
1262 an existing member for the current source. */
1263 if (loading
|| !foundit
)
1264 Vload_history
= Fcons (Fnreverse (Vcurrent_load_list
),
1269 unreadpure (junk
) /* Used as unwind-protect function in readevalloop */
1277 readevalloop_1 (old
)
1280 load_convert_to_unibyte
= ! NILP (old
);
1284 /* Signal an `end-of-file' error, if possible with file name
1288 end_of_file_error ()
1292 if (STRINGP (Vload_file_name
))
1293 data
= Fcons (Vload_file_name
, Qnil
);
1297 Fsignal (Qend_of_file
, data
);
1300 /* UNIBYTE specifies how to set load_convert_to_unibyte
1301 for this invocation.
1302 READFUN, if non-nil, is used instead of `read'.
1303 START, END is region in current buffer (from eval-region). */
1306 readevalloop (readcharfun
, stream
, sourcename
, evalfun
,
1307 printflag
, unibyte
, readfun
, start
, end
)
1308 Lisp_Object readcharfun
;
1310 Lisp_Object sourcename
;
1311 Lisp_Object (*evalfun
) ();
1313 Lisp_Object unibyte
, readfun
;
1314 Lisp_Object start
, end
;
1317 register Lisp_Object val
;
1318 int count
= SPECPDL_INDEX ();
1319 struct gcpro gcpro1
;
1320 struct buffer
*b
= 0;
1321 int continue_reading_p
;
1323 if (BUFFERP (readcharfun
))
1324 b
= XBUFFER (readcharfun
);
1325 else if (MARKERP (readcharfun
))
1326 b
= XMARKER (readcharfun
)->buffer
;
1328 specbind (Qstandard_input
, readcharfun
);
1329 specbind (Qcurrent_load_list
, Qnil
);
1330 record_unwind_protect (readevalloop_1
, load_convert_to_unibyte
? Qt
: Qnil
);
1331 load_convert_to_unibyte
= !NILP (unibyte
);
1333 readchar_backlog
= -1;
1335 GCPRO1 (sourcename
);
1337 LOADHIST_ATTACH (sourcename
);
1339 continue_reading_p
= 1;
1340 while (continue_reading_p
)
1342 int count1
= SPECPDL_INDEX ();
1344 if (b
!= 0 && NILP (b
->name
))
1345 error ("Reading from killed buffer");
1349 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1350 record_unwind_protect (save_restriction_restore
, save_restriction_save ());
1352 Fnarrow_to_region (make_number (BEGV
), end
);
1360 while ((c
= READCHAR
) != '\n' && c
!= -1);
1365 unbind_to (count1
, Qnil
);
1369 /* Ignore whitespace here, so we can detect eof. */
1370 if (c
== ' ' || c
== '\t' || c
== '\n' || c
== '\f' || c
== '\r')
1373 if (!NILP (Vpurify_flag
) && c
== '(')
1375 record_unwind_protect (unreadpure
, Qnil
);
1376 val
= read_list (-1, readcharfun
);
1381 read_objects
= Qnil
;
1382 if (!NILP (readfun
))
1384 val
= call1 (readfun
, readcharfun
);
1386 /* If READCHARFUN has set point to ZV, we should
1387 stop reading, even if the form read sets point
1388 to a different value when evaluated. */
1389 if (BUFFERP (readcharfun
))
1391 struct buffer
*b
= XBUFFER (readcharfun
);
1392 if (BUF_PT (b
) == BUF_ZV (b
))
1393 continue_reading_p
= 0;
1396 else if (! NILP (Vload_read_function
))
1397 val
= call1 (Vload_read_function
, readcharfun
);
1399 val
= read_internal_start (readcharfun
, Qnil
, Qnil
);
1402 if (!NILP (start
) && continue_reading_p
)
1403 start
= Fpoint_marker ();
1404 unbind_to (count1
, Qnil
);
1406 val
= (*evalfun
) (val
);
1410 Vvalues
= Fcons (val
, Vvalues
);
1411 if (EQ (Vstandard_output
, Qt
))
1418 build_load_history (stream
, sourcename
);
1421 unbind_to (count
, Qnil
);
1424 DEFUN ("eval-buffer", Feval_buffer
, Seval_buffer
, 0, 5, "",
1425 doc
: /* Execute the current buffer as Lisp code.
1426 Programs can pass two arguments, BUFFER and PRINTFLAG.
1427 BUFFER is the buffer to evaluate (nil means use current buffer).
1428 PRINTFLAG controls printing of output:
1429 nil means discard it; anything else is stream for print.
1431 If the optional third argument FILENAME is non-nil,
1432 it specifies the file name to use for `load-history'.
1433 The optional fourth argument UNIBYTE specifies `load-convert-to-unibyte'
1434 for this invocation.
1436 The optional fifth argument DO-ALLOW-PRINT, if non-nil, specifies that
1437 `print' and related functions should work normally even if PRINTFLAG is nil.
1439 This function preserves the position of point. */)
1440 (buffer
, printflag
, filename
, unibyte
, do_allow_print
)
1441 Lisp_Object buffer
, printflag
, filename
, unibyte
, do_allow_print
;
1443 int count
= SPECPDL_INDEX ();
1444 Lisp_Object tem
, buf
;
1447 buf
= Fcurrent_buffer ();
1449 buf
= Fget_buffer (buffer
);
1451 error ("No such buffer");
1453 if (NILP (printflag
) && NILP (do_allow_print
))
1458 if (NILP (filename
))
1459 filename
= XBUFFER (buf
)->filename
;
1461 specbind (Qeval_buffer_list
, Fcons (buf
, Veval_buffer_list
));
1462 specbind (Qstandard_output
, tem
);
1463 record_unwind_protect (save_excursion_restore
, save_excursion_save ());
1464 BUF_SET_PT (XBUFFER (buf
), BUF_BEGV (XBUFFER (buf
)));
1465 readevalloop (buf
, 0, filename
, Feval
,
1466 !NILP (printflag
), unibyte
, Qnil
, Qnil
, Qnil
);
1467 unbind_to (count
, Qnil
);
1472 DEFUN ("eval-region", Feval_region
, Seval_region
, 2, 4, "r",
1473 doc
: /* Execute the region as Lisp code.
1474 When called from programs, expects two arguments,
1475 giving starting and ending indices in the current buffer
1476 of the text to be executed.
1477 Programs can pass third argument PRINTFLAG which controls output:
1478 nil means discard it; anything else is stream for printing it.
1479 Also the fourth argument READ-FUNCTION, if non-nil, is used
1480 instead of `read' to read each expression. It gets one argument
1481 which is the input stream for reading characters.
1483 This function does not move point. */)
1484 (start
, end
, printflag
, read_function
)
1485 Lisp_Object start
, end
, printflag
, read_function
;
1487 int count
= SPECPDL_INDEX ();
1488 Lisp_Object tem
, cbuf
;
1490 cbuf
= Fcurrent_buffer ();
1492 if (NILP (printflag
))
1496 specbind (Qstandard_output
, tem
);
1497 specbind (Qeval_buffer_list
, Fcons (cbuf
, Veval_buffer_list
));
1499 /* readevalloop calls functions which check the type of start and end. */
1500 readevalloop (cbuf
, 0, XBUFFER (cbuf
)->filename
, Feval
,
1501 !NILP (printflag
), Qnil
, read_function
,
1504 return unbind_to (count
, Qnil
);
1508 DEFUN ("read", Fread
, Sread
, 0, 1, 0,
1509 doc
: /* Read one Lisp expression as text from STREAM, return as Lisp object.
1510 If STREAM is nil, use the value of `standard-input' (which see).
1511 STREAM or the value of `standard-input' may be:
1512 a buffer (read from point and advance it)
1513 a marker (read from where it points and advance it)
1514 a function (call it with no arguments for each character,
1515 call it with a char as argument to push a char back)
1516 a string (takes text from string, starting at the beginning)
1517 t (read text line using minibuffer and use it, or read from
1518 standard input in batch mode). */)
1523 stream
= Vstandard_input
;
1524 if (EQ (stream
, Qt
))
1525 stream
= Qread_char
;
1526 if (EQ (stream
, Qread_char
))
1527 return Fread_minibuffer (build_string ("Lisp expression: "), Qnil
);
1529 return read_internal_start (stream
, Qnil
, Qnil
);
1532 DEFUN ("read-from-string", Fread_from_string
, Sread_from_string
, 1, 3, 0,
1533 doc
: /* Read one Lisp expression which is represented as text by STRING.
1534 Returns a cons: (OBJECT-READ . FINAL-STRING-INDEX).
1535 START and END optionally delimit a substring of STRING from which to read;
1536 they default to 0 and (length STRING) respectively. */)
1537 (string
, start
, end
)
1538 Lisp_Object string
, start
, end
;
1541 CHECK_STRING (string
);
1542 /* read_internal_start sets read_from_string_index. */
1543 ret
= read_internal_start (string
, start
, end
);
1544 return Fcons (ret
, make_number (read_from_string_index
));
1547 /* Function to set up the global context we need in toplevel read
1550 read_internal_start (stream
, start
, end
)
1552 Lisp_Object start
; /* Only used when stream is a string. */
1553 Lisp_Object end
; /* Only used when stream is a string. */
1557 readchar_backlog
= -1;
1559 new_backquote_flag
= 0;
1560 read_objects
= Qnil
;
1561 if (EQ (Vread_with_symbol_positions
, Qt
)
1562 || EQ (Vread_with_symbol_positions
, stream
))
1563 Vread_symbol_positions_list
= Qnil
;
1565 if (STRINGP (stream
))
1567 int startval
, endval
;
1569 endval
= SCHARS (stream
);
1573 endval
= XINT (end
);
1574 if (endval
< 0 || endval
> SCHARS (stream
))
1575 args_out_of_range (stream
, end
);
1582 CHECK_NUMBER (start
);
1583 startval
= XINT (start
);
1584 if (startval
< 0 || startval
> endval
)
1585 args_out_of_range (stream
, start
);
1587 read_from_string_index
= startval
;
1588 read_from_string_index_byte
= string_char_to_byte (stream
, startval
);
1589 read_from_string_limit
= endval
;
1592 retval
= read0 (stream
);
1593 if (EQ (Vread_with_symbol_positions
, Qt
)
1594 || EQ (Vread_with_symbol_positions
, stream
))
1595 Vread_symbol_positions_list
= Fnreverse (Vread_symbol_positions_list
);
1599 /* Use this for recursive reads, in contexts where internal tokens
1604 Lisp_Object readcharfun
;
1606 register Lisp_Object val
;
1609 val
= read1 (readcharfun
, &c
, 0);
1611 Fsignal (Qinvalid_read_syntax
, Fcons (Fmake_string (make_number (1),
1618 static int read_buffer_size
;
1619 static char *read_buffer
;
1621 /* Read multibyte form and return it as a character. C is a first
1622 byte of multibyte form, and rest of them are read from
1626 read_multibyte (c
, readcharfun
)
1628 Lisp_Object readcharfun
;
1630 /* We need the actual character code of this multibyte
1632 unsigned char str
[MAX_MULTIBYTE_LENGTH
];
1640 while ((c
= READCHAR
) >= 0xA0
1641 && len
< MAX_MULTIBYTE_LENGTH
)
1647 if (UNIBYTE_STR_AS_MULTIBYTE_P (str
, len
, bytes
))
1648 return STRING_CHAR (str
, len
);
1649 /* The byte sequence is not valid as multibyte. Unread all bytes
1650 but the first one, and return the first byte. */
1656 /* Read a \-escape sequence, assuming we already read the `\'.
1657 If the escape sequence forces unibyte, store 1 into *BYTEREP.
1658 If the escape sequence forces multibyte, store 2 into *BYTEREP.
1659 Otherwise store 0 into *BYTEREP. */
1662 read_escape (readcharfun
, stringp
, byterep
)
1663 Lisp_Object readcharfun
;
1667 register int c
= READCHAR
;
1674 end_of_file_error ();
1704 error ("Invalid escape character syntax");
1707 c
= read_escape (readcharfun
, 0, byterep
);
1708 return c
| meta_modifier
;
1713 error ("Invalid escape character syntax");
1716 c
= read_escape (readcharfun
, 0, byterep
);
1717 return c
| shift_modifier
;
1722 error ("Invalid escape character syntax");
1725 c
= read_escape (readcharfun
, 0, byterep
);
1726 return c
| hyper_modifier
;
1731 error ("Invalid escape character syntax");
1734 c
= read_escape (readcharfun
, 0, byterep
);
1735 return c
| alt_modifier
;
1747 c
= read_escape (readcharfun
, 0, byterep
);
1748 return c
| super_modifier
;
1753 error ("Invalid escape character syntax");
1757 c
= read_escape (readcharfun
, 0, byterep
);
1758 if ((c
& ~CHAR_MODIFIER_MASK
) == '?')
1759 return 0177 | (c
& CHAR_MODIFIER_MASK
);
1760 else if (! SINGLE_BYTE_CHAR_P ((c
& ~CHAR_MODIFIER_MASK
)))
1761 return c
| ctrl_modifier
;
1762 /* ASCII control chars are made from letters (both cases),
1763 as well as the non-letters within 0100...0137. */
1764 else if ((c
& 0137) >= 0101 && (c
& 0137) <= 0132)
1765 return (c
& (037 | ~0177));
1766 else if ((c
& 0177) >= 0100 && (c
& 0177) <= 0137)
1767 return (c
& (037 | ~0177));
1769 return c
| ctrl_modifier
;
1779 /* An octal escape, as in ANSI C. */
1781 register int i
= c
- '0';
1782 register int count
= 0;
1785 if ((c
= READCHAR
) >= '0' && c
<= '7')
1802 /* A hex escape, as in ANSI C. */
1808 if (c
>= '0' && c
<= '9')
1813 else if ((c
>= 'a' && c
<= 'f')
1814 || (c
>= 'A' && c
<= 'F'))
1817 if (c
>= 'a' && c
<= 'f')
1834 if (BASE_LEADING_CODE_P (c
))
1835 c
= read_multibyte (c
, readcharfun
);
1841 /* Read an integer in radix RADIX using READCHARFUN to read
1842 characters. RADIX must be in the interval [2..36]; if it isn't, a
1843 read error is signaled . Value is the integer read. Signals an
1844 error if encountering invalid read syntax or if RADIX is out of
1848 read_integer (readcharfun
, radix
)
1849 Lisp_Object readcharfun
;
1852 int ndigits
= 0, invalid_p
, c
, sign
= 0;
1853 EMACS_INT number
= 0;
1855 if (radix
< 2 || radix
> 36)
1859 number
= ndigits
= invalid_p
= 0;
1875 if (c
>= '0' && c
<= '9')
1877 else if (c
>= 'a' && c
<= 'z')
1878 digit
= c
- 'a' + 10;
1879 else if (c
>= 'A' && c
<= 'Z')
1880 digit
= c
- 'A' + 10;
1887 if (digit
< 0 || digit
>= radix
)
1890 number
= radix
* number
+ digit
;
1896 if (ndigits
== 0 || invalid_p
)
1899 sprintf (buf
, "integer, radix %d", radix
);
1900 Fsignal (Qinvalid_read_syntax
, Fcons (build_string (buf
), Qnil
));
1903 return make_number (sign
* number
);
1907 /* Convert unibyte text in read_buffer to multibyte.
1909 Initially, *P is a pointer after the end of the unibyte text, and
1910 the pointer *END points after the end of read_buffer.
1912 If read_buffer doesn't have enough room to hold the result
1913 of the conversion, reallocate it and adjust *P and *END.
1915 At the end, make *P point after the result of the conversion, and
1916 return in *NCHARS the number of characters in the converted
1920 to_multibyte (p
, end
, nchars
)
1926 parse_str_as_multibyte (read_buffer
, *p
- read_buffer
, &nbytes
, nchars
);
1927 if (read_buffer_size
< 2 * nbytes
)
1929 int offset
= *p
- read_buffer
;
1930 read_buffer_size
= 2 * max (read_buffer_size
, nbytes
);
1931 read_buffer
= (char *) xrealloc (read_buffer
, read_buffer_size
);
1932 *p
= read_buffer
+ offset
;
1933 *end
= read_buffer
+ read_buffer_size
;
1936 if (nbytes
!= *nchars
)
1937 nbytes
= str_as_multibyte (read_buffer
, read_buffer_size
,
1938 *p
- read_buffer
, nchars
);
1940 *p
= read_buffer
+ nbytes
;
1944 /* If the next token is ')' or ']' or '.', we store that character
1945 in *PCH and the return value is not interesting. Else, we store
1946 zero in *PCH and we read and return one lisp object.
1948 FIRST_IN_LIST is nonzero if this is the first element of a list. */
1951 read1 (readcharfun
, pch
, first_in_list
)
1952 register Lisp_Object readcharfun
;
1957 int uninterned_symbol
= 0;
1965 end_of_file_error ();
1970 return read_list (0, readcharfun
);
1973 return read_vector (readcharfun
, 0);
1990 tmp
= read_vector (readcharfun
, 0);
1991 if (XVECTOR (tmp
)->size
< CHAR_TABLE_STANDARD_SLOTS
1992 || XVECTOR (tmp
)->size
> CHAR_TABLE_STANDARD_SLOTS
+ 10)
1993 error ("Invalid size char-table");
1994 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
1995 XCHAR_TABLE (tmp
)->top
= Qt
;
2004 tmp
= read_vector (readcharfun
, 0);
2005 if (XVECTOR (tmp
)->size
!= SUB_CHAR_TABLE_STANDARD_SLOTS
)
2006 error ("Invalid size char-table");
2007 XSETCHAR_TABLE (tmp
, XCHAR_TABLE (tmp
));
2008 XCHAR_TABLE (tmp
)->top
= Qnil
;
2011 Fsignal (Qinvalid_read_syntax
,
2012 Fcons (make_string ("#^^", 3), Qnil
));
2014 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#^", 2), Qnil
));
2019 length
= read1 (readcharfun
, pch
, first_in_list
);
2023 Lisp_Object tmp
, val
;
2025 = ((XFASTINT (length
) + BOOL_VECTOR_BITS_PER_CHAR
- 1)
2026 / BOOL_VECTOR_BITS_PER_CHAR
);
2029 tmp
= read1 (readcharfun
, pch
, first_in_list
);
2030 if (size_in_chars
!= SCHARS (tmp
)
2031 /* We used to print 1 char too many
2032 when the number of bits was a multiple of 8.
2033 Accept such input in case it came from an old version. */
2034 && ! (XFASTINT (length
)
2035 == (SCHARS (tmp
) - 1) * BOOL_VECTOR_BITS_PER_CHAR
))
2036 Fsignal (Qinvalid_read_syntax
,
2037 Fcons (make_string ("#&...", 5), Qnil
));
2039 val
= Fmake_bool_vector (length
, Qnil
);
2040 bcopy (SDATA (tmp
), XBOOL_VECTOR (val
)->data
,
2042 /* Clear the extraneous bits in the last byte. */
2043 if (XINT (length
) != size_in_chars
* BOOL_VECTOR_BITS_PER_CHAR
)
2044 XBOOL_VECTOR (val
)->data
[size_in_chars
- 1]
2045 &= (1 << (XINT (length
) % BOOL_VECTOR_BITS_PER_CHAR
)) - 1;
2048 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#&...", 5),
2053 /* Accept compiled functions at read-time so that we don't have to
2054 build them using function calls. */
2056 tmp
= read_vector (readcharfun
, 1);
2057 return Fmake_byte_code (XVECTOR (tmp
)->size
,
2058 XVECTOR (tmp
)->contents
);
2063 struct gcpro gcpro1
;
2066 /* Read the string itself. */
2067 tmp
= read1 (readcharfun
, &ch
, 0);
2068 if (ch
!= 0 || !STRINGP (tmp
))
2069 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2071 /* Read the intervals and their properties. */
2074 Lisp_Object beg
, end
, plist
;
2076 beg
= read1 (readcharfun
, &ch
, 0);
2081 end
= read1 (readcharfun
, &ch
, 0);
2083 plist
= read1 (readcharfun
, &ch
, 0);
2085 Fsignal (Qinvalid_read_syntax
,
2086 Fcons (build_string ("invalid string property list"),
2088 Fset_text_properties (beg
, end
, plist
, tmp
);
2094 /* #@NUMBER is used to skip NUMBER following characters.
2095 That's used in .elc files to skip over doc strings
2096 and function definitions. */
2101 /* Read a decimal integer. */
2102 while ((c
= READCHAR
) >= 0
2103 && c
>= '0' && c
<= '9')
2111 if (load_force_doc_strings
&& EQ (readcharfun
, Qget_file_char
))
2113 /* If we are supposed to force doc strings into core right now,
2114 record the last string that we skipped,
2115 and record where in the file it comes from. */
2117 /* But first exchange saved_doc_string
2118 with prev_saved_doc_string, so we save two strings. */
2120 char *temp
= saved_doc_string
;
2121 int temp_size
= saved_doc_string_size
;
2122 file_offset temp_pos
= saved_doc_string_position
;
2123 int temp_len
= saved_doc_string_length
;
2125 saved_doc_string
= prev_saved_doc_string
;
2126 saved_doc_string_size
= prev_saved_doc_string_size
;
2127 saved_doc_string_position
= prev_saved_doc_string_position
;
2128 saved_doc_string_length
= prev_saved_doc_string_length
;
2130 prev_saved_doc_string
= temp
;
2131 prev_saved_doc_string_size
= temp_size
;
2132 prev_saved_doc_string_position
= temp_pos
;
2133 prev_saved_doc_string_length
= temp_len
;
2136 if (saved_doc_string_size
== 0)
2138 saved_doc_string_size
= nskip
+ 100;
2139 saved_doc_string
= (char *) xmalloc (saved_doc_string_size
);
2141 if (nskip
> saved_doc_string_size
)
2143 saved_doc_string_size
= nskip
+ 100;
2144 saved_doc_string
= (char *) xrealloc (saved_doc_string
,
2145 saved_doc_string_size
);
2148 saved_doc_string_position
= file_tell (instream
);
2150 /* Copy that many characters into saved_doc_string. */
2151 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2152 saved_doc_string
[i
] = c
= READCHAR
;
2154 saved_doc_string_length
= i
;
2158 /* Skip that many characters. */
2159 for (i
= 0; i
< nskip
&& c
>= 0; i
++)
2167 /* #! appears at the beginning of an executable file.
2168 Skip the first line. */
2169 while (c
!= '\n' && c
>= 0)
2174 return Vload_file_name
;
2176 return Fcons (Qfunction
, Fcons (read0 (readcharfun
), Qnil
));
2177 /* #:foo is the uninterned symbol named foo. */
2180 uninterned_symbol
= 1;
2184 /* Reader forms that can reuse previously read objects. */
2185 if (c
>= '0' && c
<= '9')
2190 /* Read a non-negative integer. */
2191 while (c
>= '0' && c
<= '9')
2197 /* #n=object returns object, but associates it with n for #n#. */
2200 /* Make a placeholder for #n# to use temporarily */
2201 Lisp_Object placeholder
;
2204 placeholder
= Fcons(Qnil
, Qnil
);
2205 cell
= Fcons (make_number (n
), placeholder
);
2206 read_objects
= Fcons (cell
, read_objects
);
2208 /* Read the object itself. */
2209 tem
= read0 (readcharfun
);
2211 /* Now put it everywhere the placeholder was... */
2212 substitute_object_in_subtree (tem
, placeholder
);
2214 /* ...and #n# will use the real value from now on. */
2215 Fsetcdr (cell
, tem
);
2219 /* #n# returns a previously read object. */
2222 tem
= Fassq (make_number (n
), read_objects
);
2225 /* Fall through to error message. */
2227 else if (c
== 'r' || c
== 'R')
2228 return read_integer (readcharfun
, n
);
2230 /* Fall through to error message. */
2232 else if (c
== 'x' || c
== 'X')
2233 return read_integer (readcharfun
, 16);
2234 else if (c
== 'o' || c
== 'O')
2235 return read_integer (readcharfun
, 8);
2236 else if (c
== 'b' || c
== 'B')
2237 return read_integer (readcharfun
, 2);
2240 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("#", 1), Qnil
));
2243 while ((c
= READCHAR
) >= 0 && c
!= '\n');
2248 return Fcons (Qquote
, Fcons (read0 (readcharfun
), Qnil
));
2258 new_backquote_flag
++;
2259 value
= read0 (readcharfun
);
2260 new_backquote_flag
--;
2262 return Fcons (Qbackquote
, Fcons (value
, Qnil
));
2266 if (new_backquote_flag
)
2268 Lisp_Object comma_type
= Qnil
;
2273 comma_type
= Qcomma_at
;
2275 comma_type
= Qcomma_dot
;
2278 if (ch
>= 0) UNREAD (ch
);
2279 comma_type
= Qcomma
;
2282 new_backquote_flag
--;
2283 value
= read0 (readcharfun
);
2284 new_backquote_flag
++;
2285 return Fcons (comma_type
, Fcons (value
, Qnil
));
2298 end_of_file_error ();
2300 /* Accept `single space' syntax like (list ? x) where the
2301 whitespace character is SPC or TAB.
2302 Other literal whitespace like NL, CR, and FF are not accepted,
2303 as there are well-established escape sequences for these. */
2304 if (c
== ' ' || c
== '\t')
2305 return make_number (c
);
2308 c
= read_escape (readcharfun
, 0, &discard
);
2309 else if (BASE_LEADING_CODE_P (c
))
2310 c
= read_multibyte (c
, readcharfun
);
2312 next_char
= READCHAR
;
2313 if (next_char
== '.')
2315 /* Only a dotted-pair dot is valid after a char constant. */
2316 int next_next_char
= READCHAR
;
2317 UNREAD (next_next_char
);
2319 ok
= (next_next_char
<= 040
2320 || (next_next_char
< 0200
2321 && (index ("\"';([#?", next_next_char
)
2322 || (!first_in_list
&& next_next_char
== '`')
2323 || (new_backquote_flag
&& next_next_char
== ','))));
2327 ok
= (next_char
<= 040
2328 || (next_char
< 0200
2329 && (index ("\"';()[]#?", next_char
)
2330 || (!first_in_list
&& next_char
== '`')
2331 || (new_backquote_flag
&& next_char
== ','))));
2335 Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("?", 1), Qnil
));
2337 return make_number (c
);
2342 char *p
= read_buffer
;
2343 char *end
= read_buffer
+ read_buffer_size
;
2345 /* 1 if we saw an escape sequence specifying
2346 a multibyte character, or a multibyte character. */
2347 int force_multibyte
= 0;
2348 /* 1 if we saw an escape sequence specifying
2349 a single-byte character. */
2350 int force_singlebyte
= 0;
2351 /* 1 if read_buffer contains multibyte text now. */
2352 int is_multibyte
= 0;
2356 while ((c
= READCHAR
) >= 0
2359 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2361 int offset
= p
- read_buffer
;
2362 read_buffer
= (char *) xrealloc (read_buffer
,
2363 read_buffer_size
*= 2);
2364 p
= read_buffer
+ offset
;
2365 end
= read_buffer
+ read_buffer_size
;
2372 c
= read_escape (readcharfun
, 1, &byterep
);
2374 /* C is -1 if \ newline has just been seen */
2377 if (p
== read_buffer
)
2383 force_singlebyte
= 1;
2384 else if (byterep
== 2)
2385 force_multibyte
= 1;
2388 /* A character that must be multibyte forces multibyte. */
2389 if (! SINGLE_BYTE_CHAR_P (c
& ~CHAR_MODIFIER_MASK
))
2390 force_multibyte
= 1;
2392 /* If we just discovered the need to be multibyte,
2393 convert the text accumulated thus far. */
2394 if (force_multibyte
&& ! is_multibyte
)
2397 to_multibyte (&p
, &end
, &nchars
);
2400 /* Allow `\C- ' and `\C-?'. */
2401 if (c
== (CHAR_CTL
| ' '))
2403 else if (c
== (CHAR_CTL
| '?'))
2408 /* Shift modifier is valid only with [A-Za-z]. */
2409 if ((c
& 0377) >= 'A' && (c
& 0377) <= 'Z')
2411 else if ((c
& 0377) >= 'a' && (c
& 0377) <= 'z')
2412 c
= (c
& ~CHAR_SHIFT
) - ('a' - 'A');
2416 /* Move the meta bit to the right place for a string. */
2417 c
= (c
& ~CHAR_META
) | 0x80;
2418 if (c
& CHAR_MODIFIER_MASK
)
2419 error ("Invalid modifier in string");
2422 p
+= CHAR_STRING (c
, p
);
2430 end_of_file_error ();
2432 /* If purifying, and string starts with \ newline,
2433 return zero instead. This is for doc strings
2434 that we are really going to find in etc/DOC.nn.nn */
2435 if (!NILP (Vpurify_flag
) && NILP (Vdoc_file_name
) && cancel
)
2436 return make_number (0);
2438 if (is_multibyte
|| force_singlebyte
)
2440 else if (load_convert_to_unibyte
)
2443 to_multibyte (&p
, &end
, &nchars
);
2444 if (p
- read_buffer
!= nchars
)
2446 string
= make_multibyte_string (read_buffer
, nchars
,
2448 return Fstring_make_unibyte (string
);
2450 /* We can make a unibyte string directly. */
2453 else if (EQ (readcharfun
, Qget_file_char
)
2454 || EQ (readcharfun
, Qlambda
))
2456 /* Nowadays, reading directly from a file is used only for
2457 compiled Emacs Lisp files, and those always use the
2458 Emacs internal encoding. Meanwhile, Qlambda is used
2459 for reading dynamic byte code (compiled with
2460 byte-compile-dynamic = t). So make the string multibyte
2461 if the string contains any multibyte sequences.
2462 (to_multibyte is a no-op if not.) */
2463 to_multibyte (&p
, &end
, &nchars
);
2464 is_multibyte
= (p
- read_buffer
) != nchars
;
2467 /* In all other cases, if we read these bytes as
2468 separate characters, treat them as separate characters now. */
2471 /* We want readchar_count to be the number of characters, not
2472 bytes. Hence we adjust for multibyte characters in the
2473 string. ... But it doesn't seem to be necessary, because
2474 READCHAR *does* read multibyte characters from buffers. */
2475 /* readchar_count -= (p - read_buffer) - nchars; */
2477 return make_pure_string (read_buffer
, nchars
, p
- read_buffer
,
2479 return make_specified_string (read_buffer
, nchars
, p
- read_buffer
,
2485 int next_char
= READCHAR
;
2488 if (next_char
<= 040
2489 || (next_char
< 0200
2490 && (index ("\"';([#?", next_char
)
2491 || (!first_in_list
&& next_char
== '`')
2492 || (new_backquote_flag
&& next_char
== ','))))
2498 /* Otherwise, we fall through! Note that the atom-reading loop
2499 below will now loop at least once, assuring that we will not
2500 try to UNREAD two characters in a row. */
2504 if (c
<= 040) goto retry
;
2506 char *p
= read_buffer
;
2510 char *end
= read_buffer
+ read_buffer_size
;
2514 || (!index ("\"';()[]#", c
)
2515 && !(!first_in_list
&& c
== '`')
2516 && !(new_backquote_flag
&& c
== ','))))
2518 if (end
- p
< MAX_MULTIBYTE_LENGTH
)
2520 int offset
= p
- read_buffer
;
2521 read_buffer
= (char *) xrealloc (read_buffer
,
2522 read_buffer_size
*= 2);
2523 p
= read_buffer
+ offset
;
2524 end
= read_buffer
+ read_buffer_size
;
2531 end_of_file_error ();
2535 if (! SINGLE_BYTE_CHAR_P (c
))
2536 p
+= CHAR_STRING (c
, p
);
2545 int offset
= p
- read_buffer
;
2546 read_buffer
= (char *) xrealloc (read_buffer
,
2547 read_buffer_size
*= 2);
2548 p
= read_buffer
+ offset
;
2549 end
= read_buffer
+ read_buffer_size
;
2556 if (!quoted
&& !uninterned_symbol
)
2559 register Lisp_Object val
;
2561 if (*p1
== '+' || *p1
== '-') p1
++;
2562 /* Is it an integer? */
2565 while (p1
!= p
&& (c
= *p1
) >= '0' && c
<= '9') p1
++;
2566 /* Integers can have trailing decimal points. */
2567 if (p1
> read_buffer
&& p1
< p
&& *p1
== '.') p1
++;
2569 /* It is an integer. */
2573 if (sizeof (int) == sizeof (EMACS_INT
))
2574 XSETINT (val
, atoi (read_buffer
));
2575 else if (sizeof (long) == sizeof (EMACS_INT
))
2576 XSETINT (val
, atol (read_buffer
));
2582 if (isfloat_string (read_buffer
))
2584 /* Compute NaN and infinities using 0.0 in a variable,
2585 to cope with compilers that think they are smarter
2591 /* Negate the value ourselves. This treats 0, NaNs,
2592 and infinity properly on IEEE floating point hosts,
2593 and works around a common bug where atof ("-0.0")
2595 int negative
= read_buffer
[0] == '-';
2597 /* The only way p[-1] can be 'F' or 'N', after isfloat_string
2598 returns 1, is if the input ends in e+INF or e+NaN. */
2605 value
= zero
/ zero
;
2607 /* If that made a "negative" NaN, negate it. */
2611 union { double d
; char c
[sizeof (double)]; } u_data
, u_minus_zero
;
2614 u_minus_zero
.d
= - 0.0;
2615 for (i
= 0; i
< sizeof (double); i
++)
2616 if (u_data
.c
[i
] & u_minus_zero
.c
[i
])
2622 /* Now VALUE is a positive NaN. */
2625 value
= atof (read_buffer
+ negative
);
2629 return make_float (negative
? - value
: value
);
2633 Lisp_Object result
= uninterned_symbol
? make_symbol (read_buffer
)
2634 : intern (read_buffer
);
2635 if (EQ (Vread_with_symbol_positions
, Qt
)
2636 || EQ (Vread_with_symbol_positions
, readcharfun
))
2637 Vread_symbol_positions_list
=
2638 /* Kind of a hack; this will probably fail if characters
2639 in the symbol name were escaped. Not really a big
2641 Fcons (Fcons (result
,
2642 make_number (readchar_count
2643 - XFASTINT (Flength (Fsymbol_name (result
))))),
2644 Vread_symbol_positions_list
);
2652 /* List of nodes we've seen during substitute_object_in_subtree. */
2653 static Lisp_Object seen_list
;
2656 substitute_object_in_subtree (object
, placeholder
)
2658 Lisp_Object placeholder
;
2660 Lisp_Object check_object
;
2662 /* We haven't seen any objects when we start. */
2665 /* Make all the substitutions. */
2667 = substitute_object_recurse (object
, placeholder
, object
);
2669 /* Clear seen_list because we're done with it. */
2672 /* The returned object here is expected to always eq the
2674 if (!EQ (check_object
, object
))
2675 error ("Unexpected mutation error in reader");
2678 /* Feval doesn't get called from here, so no gc protection is needed. */
2679 #define SUBSTITUTE(get_val, set_val) \
2681 Lisp_Object old_value = get_val; \
2682 Lisp_Object true_value \
2683 = substitute_object_recurse (object, placeholder,\
2686 if (!EQ (old_value, true_value)) \
2693 substitute_object_recurse (object
, placeholder
, subtree
)
2695 Lisp_Object placeholder
;
2696 Lisp_Object subtree
;
2698 /* If we find the placeholder, return the target object. */
2699 if (EQ (placeholder
, subtree
))
2702 /* If we've been to this node before, don't explore it again. */
2703 if (!EQ (Qnil
, Fmemq (subtree
, seen_list
)))
2706 /* If this node can be the entry point to a cycle, remember that
2707 we've seen it. It can only be such an entry point if it was made
2708 by #n=, which means that we can find it as a value in
2710 if (!EQ (Qnil
, Frassq (subtree
, read_objects
)))
2711 seen_list
= Fcons (subtree
, seen_list
);
2713 /* Recurse according to subtree's type.
2714 Every branch must return a Lisp_Object. */
2715 switch (XTYPE (subtree
))
2717 case Lisp_Vectorlike
:
2720 int length
= XINT (Flength(subtree
));
2721 for (i
= 0; i
< length
; i
++)
2723 Lisp_Object idx
= make_number (i
);
2724 SUBSTITUTE (Faref (subtree
, idx
),
2725 Faset (subtree
, idx
, true_value
));
2732 SUBSTITUTE (Fcar_safe (subtree
),
2733 Fsetcar (subtree
, true_value
));
2734 SUBSTITUTE (Fcdr_safe (subtree
),
2735 Fsetcdr (subtree
, true_value
));
2741 /* Check for text properties in each interval.
2742 substitute_in_interval contains part of the logic. */
2744 INTERVAL root_interval
= STRING_INTERVALS (subtree
);
2745 Lisp_Object arg
= Fcons (object
, placeholder
);
2747 traverse_intervals_noorder (root_interval
,
2748 &substitute_in_interval
, arg
);
2753 /* Other types don't recurse any further. */
2759 /* Helper function for substitute_object_recurse. */
2761 substitute_in_interval (interval
, arg
)
2765 Lisp_Object object
= Fcar (arg
);
2766 Lisp_Object placeholder
= Fcdr (arg
);
2768 SUBSTITUTE(interval
->plist
, interval
->plist
= true_value
);
2787 if (*cp
== '+' || *cp
== '-')
2790 if (*cp
>= '0' && *cp
<= '9')
2793 while (*cp
>= '0' && *cp
<= '9')
2801 if (*cp
>= '0' && *cp
<= '9')
2804 while (*cp
>= '0' && *cp
<= '9')
2807 if (*cp
== 'e' || *cp
== 'E')
2811 if (*cp
== '+' || *cp
== '-')
2815 if (*cp
>= '0' && *cp
<= '9')
2818 while (*cp
>= '0' && *cp
<= '9')
2821 else if (cp
== start
)
2823 else if (cp
[-1] == '+' && cp
[0] == 'I' && cp
[1] == 'N' && cp
[2] == 'F')
2828 else if (cp
[-1] == '+' && cp
[0] == 'N' && cp
[1] == 'a' && cp
[2] == 'N')
2834 return (((*cp
== 0) || (*cp
== ' ') || (*cp
== '\t') || (*cp
== '\n') || (*cp
== '\r') || (*cp
== '\f'))
2835 && (state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
)
2836 || state
== (DOT_CHAR
|TRAIL_INT
)
2837 || state
== (LEAD_INT
|E_CHAR
|EXP_INT
)
2838 || state
== (LEAD_INT
|DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)
2839 || state
== (DOT_CHAR
|TRAIL_INT
|E_CHAR
|EXP_INT
)));
2844 read_vector (readcharfun
, bytecodeflag
)
2845 Lisp_Object readcharfun
;
2850 register Lisp_Object
*ptr
;
2851 register Lisp_Object tem
, item
, vector
;
2852 register struct Lisp_Cons
*otem
;
2855 tem
= read_list (1, readcharfun
);
2856 len
= Flength (tem
);
2857 vector
= (read_pure
? make_pure_vector (XINT (len
)) : Fmake_vector (len
, Qnil
));
2859 size
= XVECTOR (vector
)->size
;
2860 ptr
= XVECTOR (vector
)->contents
;
2861 for (i
= 0; i
< size
; i
++)
2864 /* If `load-force-doc-strings' is t when reading a lazily-loaded
2865 bytecode object, the docstring containing the bytecode and
2866 constants values must be treated as unibyte and passed to
2867 Fread, to get the actual bytecode string and constants vector. */
2868 if (bytecodeflag
&& load_force_doc_strings
)
2870 if (i
== COMPILED_BYTECODE
)
2872 if (!STRINGP (item
))
2873 error ("Invalid byte code");
2875 /* Delay handling the bytecode slot until we know whether
2876 it is lazily-loaded (we can tell by whether the
2877 constants slot is nil). */
2878 ptr
[COMPILED_CONSTANTS
] = item
;
2881 else if (i
== COMPILED_CONSTANTS
)
2883 Lisp_Object bytestr
= ptr
[COMPILED_CONSTANTS
];
2887 /* Coerce string to unibyte (like string-as-unibyte,
2888 but without generating extra garbage and
2889 guaranteeing no change in the contents). */
2890 STRING_SET_CHARS (bytestr
, SBYTES (bytestr
));
2891 STRING_SET_UNIBYTE (bytestr
);
2893 item
= Fread (bytestr
);
2895 error ("Invalid byte code");
2897 otem
= XCONS (item
);
2898 bytestr
= XCAR (item
);
2903 /* Now handle the bytecode slot. */
2904 ptr
[COMPILED_BYTECODE
] = read_pure
? Fpurecopy (bytestr
) : bytestr
;
2907 ptr
[i
] = read_pure
? Fpurecopy (item
) : item
;
2915 /* FLAG = 1 means check for ] to terminate rather than ) and .
2916 FLAG = -1 means check for starting with defun
2917 and make structure pure. */
2920 read_list (flag
, readcharfun
)
2922 register Lisp_Object readcharfun
;
2924 /* -1 means check next element for defun,
2925 0 means don't check,
2926 1 means already checked and found defun. */
2927 int defunflag
= flag
< 0 ? -1 : 0;
2928 Lisp_Object val
, tail
;
2929 register Lisp_Object elt
, tem
;
2930 struct gcpro gcpro1
, gcpro2
;
2931 /* 0 is the normal case.
2932 1 means this list is a doc reference; replace it with the number 0.
2933 2 means this list is a doc reference; replace it with the doc string. */
2934 int doc_reference
= 0;
2936 /* Initialize this to 1 if we are reading a list. */
2937 int first_in_list
= flag
<= 0;
2946 elt
= read1 (readcharfun
, &ch
, first_in_list
);
2951 /* While building, if the list starts with #$, treat it specially. */
2952 if (EQ (elt
, Vload_file_name
)
2954 && !NILP (Vpurify_flag
))
2956 if (NILP (Vdoc_file_name
))
2957 /* We have not yet called Snarf-documentation, so assume
2958 this file is described in the DOC-MM.NN file
2959 and Snarf-documentation will fill in the right value later.
2960 For now, replace the whole list with 0. */
2963 /* We have already called Snarf-documentation, so make a relative
2964 file name for this file, so it can be found properly
2965 in the installed Lisp directory.
2966 We don't use Fexpand_file_name because that would make
2967 the directory absolute now. */
2968 elt
= concat2 (build_string ("../lisp/"),
2969 Ffile_name_nondirectory (elt
));
2971 else if (EQ (elt
, Vload_file_name
)
2973 && load_force_doc_strings
)
2982 Fsignal (Qinvalid_read_syntax
,
2983 Fcons (make_string (") or . in a vector", 18), Qnil
));
2991 XSETCDR (tail
, read0 (readcharfun
));
2993 val
= read0 (readcharfun
);
2994 read1 (readcharfun
, &ch
, 0);
2998 if (doc_reference
== 1)
2999 return make_number (0);
3000 if (doc_reference
== 2)
3002 /* Get a doc string from the file we are loading.
3003 If it's in saved_doc_string, get it from there. */
3004 int pos
= XINT (XCDR (val
));
3005 /* Position is negative for user variables. */
3006 if (pos
< 0) pos
= -pos
;
3007 if (pos
>= saved_doc_string_position
3008 && pos
< (saved_doc_string_position
3009 + saved_doc_string_length
))
3011 int start
= pos
- saved_doc_string_position
;
3014 /* Process quoting with ^A,
3015 and find the end of the string,
3016 which is marked with ^_ (037). */
3017 for (from
= start
, to
= start
;
3018 saved_doc_string
[from
] != 037;)
3020 int c
= saved_doc_string
[from
++];
3023 c
= saved_doc_string
[from
++];
3025 saved_doc_string
[to
++] = c
;
3027 saved_doc_string
[to
++] = 0;
3029 saved_doc_string
[to
++] = 037;
3032 saved_doc_string
[to
++] = c
;
3035 return make_string (saved_doc_string
+ start
,
3038 /* Look in prev_saved_doc_string the same way. */
3039 else if (pos
>= prev_saved_doc_string_position
3040 && pos
< (prev_saved_doc_string_position
3041 + prev_saved_doc_string_length
))
3043 int start
= pos
- prev_saved_doc_string_position
;
3046 /* Process quoting with ^A,
3047 and find the end of the string,
3048 which is marked with ^_ (037). */
3049 for (from
= start
, to
= start
;
3050 prev_saved_doc_string
[from
] != 037;)
3052 int c
= prev_saved_doc_string
[from
++];
3055 c
= prev_saved_doc_string
[from
++];
3057 prev_saved_doc_string
[to
++] = c
;
3059 prev_saved_doc_string
[to
++] = 0;
3061 prev_saved_doc_string
[to
++] = 037;
3064 prev_saved_doc_string
[to
++] = c
;
3067 return make_string (prev_saved_doc_string
+ start
,
3071 return get_doc_string (val
, 0, 0);
3076 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string (". in wrong context", 18), Qnil
));
3078 return Fsignal (Qinvalid_read_syntax
, Fcons (make_string ("] in a list", 11), Qnil
));
3080 tem
= (read_pure
&& flag
<= 0
3081 ? pure_cons (elt
, Qnil
)
3082 : Fcons (elt
, Qnil
));
3084 XSETCDR (tail
, tem
);
3089 defunflag
= EQ (elt
, Qdefun
);
3090 else if (defunflag
> 0)
3095 Lisp_Object Vobarray
;
3096 Lisp_Object initial_obarray
;
3098 /* oblookup stores the bucket number here, for the sake of Funintern. */
3100 int oblookup_last_bucket_number
;
3102 static int hash_string ();
3104 /* Get an error if OBARRAY is not an obarray.
3105 If it is one, return it. */
3108 check_obarray (obarray
)
3109 Lisp_Object obarray
;
3111 while (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3113 /* If Vobarray is now invalid, force it to be valid. */
3114 if (EQ (Vobarray
, obarray
)) Vobarray
= initial_obarray
;
3116 obarray
= wrong_type_argument (Qvectorp
, obarray
);
3121 /* Intern the C string STR: return a symbol with that name,
3122 interned in the current obarray. */
3129 int len
= strlen (str
);
3130 Lisp_Object obarray
;
3133 if (!VECTORP (obarray
) || XVECTOR (obarray
)->size
== 0)
3134 obarray
= check_obarray (obarray
);
3135 tem
= oblookup (obarray
, str
, len
, len
);
3138 return Fintern (make_string (str
, len
), obarray
);
3141 /* Create an uninterned symbol with name STR. */
3147 int len
= strlen (str
);
3149 return Fmake_symbol ((!NILP (Vpurify_flag
)
3150 ? make_pure_string (str
, len
, len
, 0)
3151 : make_string (str
, len
)));
3154 DEFUN ("intern", Fintern
, Sintern
, 1, 2, 0,
3155 doc
: /* Return the canonical symbol whose name is STRING.
3156 If there is none, one is created by this function and returned.
3157 A second optional argument specifies the obarray to use;
3158 it defaults to the value of `obarray'. */)
3160 Lisp_Object string
, obarray
;
3162 register Lisp_Object tem
, sym
, *ptr
;
3164 if (NILP (obarray
)) obarray
= Vobarray
;
3165 obarray
= check_obarray (obarray
);
3167 CHECK_STRING (string
);
3169 tem
= oblookup (obarray
, SDATA (string
),
3172 if (!INTEGERP (tem
))
3175 if (!NILP (Vpurify_flag
))
3176 string
= Fpurecopy (string
);
3177 sym
= Fmake_symbol (string
);
3179 if (EQ (obarray
, initial_obarray
))
3180 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3182 XSYMBOL (sym
)->interned
= SYMBOL_INTERNED
;
3184 if ((SREF (string
, 0) == ':')
3185 && EQ (obarray
, initial_obarray
))
3187 XSYMBOL (sym
)->constant
= 1;
3188 XSYMBOL (sym
)->value
= sym
;
3191 ptr
= &XVECTOR (obarray
)->contents
[XINT (tem
)];
3193 XSYMBOL (sym
)->next
= XSYMBOL (*ptr
);
3195 XSYMBOL (sym
)->next
= 0;
3200 DEFUN ("intern-soft", Fintern_soft
, Sintern_soft
, 1, 2, 0,
3201 doc
: /* Return the canonical symbol named NAME, or nil if none exists.
3202 NAME may be a string or a symbol. If it is a symbol, that exact
3203 symbol is searched for.
3204 A second optional argument specifies the obarray to use;
3205 it defaults to the value of `obarray'. */)
3207 Lisp_Object name
, obarray
;
3209 register Lisp_Object tem
, string
;
3211 if (NILP (obarray
)) obarray
= Vobarray
;
3212 obarray
= check_obarray (obarray
);
3214 if (!SYMBOLP (name
))
3216 CHECK_STRING (name
);
3220 string
= SYMBOL_NAME (name
);
3222 tem
= oblookup (obarray
, SDATA (string
), SCHARS (string
), SBYTES (string
));
3223 if (INTEGERP (tem
) || (SYMBOLP (name
) && !EQ (name
, tem
)))
3229 DEFUN ("unintern", Funintern
, Sunintern
, 1, 2, 0,
3230 doc
: /* Delete the symbol named NAME, if any, from OBARRAY.
3231 The value is t if a symbol was found and deleted, nil otherwise.
3232 NAME may be a string or a symbol. If it is a symbol, that symbol
3233 is deleted, if it belongs to OBARRAY--no other symbol is deleted.
3234 OBARRAY defaults to the value of the variable `obarray'. */)
3236 Lisp_Object name
, obarray
;
3238 register Lisp_Object string
, tem
;
3241 if (NILP (obarray
)) obarray
= Vobarray
;
3242 obarray
= check_obarray (obarray
);
3245 string
= SYMBOL_NAME (name
);
3248 CHECK_STRING (name
);
3252 tem
= oblookup (obarray
, SDATA (string
),
3257 /* If arg was a symbol, don't delete anything but that symbol itself. */
3258 if (SYMBOLP (name
) && !EQ (name
, tem
))
3261 XSYMBOL (tem
)->interned
= SYMBOL_UNINTERNED
;
3262 XSYMBOL (tem
)->constant
= 0;
3263 XSYMBOL (tem
)->indirect_variable
= 0;
3265 hash
= oblookup_last_bucket_number
;
3267 if (EQ (XVECTOR (obarray
)->contents
[hash
], tem
))
3269 if (XSYMBOL (tem
)->next
)
3270 XSETSYMBOL (XVECTOR (obarray
)->contents
[hash
], XSYMBOL (tem
)->next
);
3272 XSETINT (XVECTOR (obarray
)->contents
[hash
], 0);
3276 Lisp_Object tail
, following
;
3278 for (tail
= XVECTOR (obarray
)->contents
[hash
];
3279 XSYMBOL (tail
)->next
;
3282 XSETSYMBOL (following
, XSYMBOL (tail
)->next
);
3283 if (EQ (following
, tem
))
3285 XSYMBOL (tail
)->next
= XSYMBOL (following
)->next
;
3294 /* Return the symbol in OBARRAY whose names matches the string
3295 of SIZE characters (SIZE_BYTE bytes) at PTR.
3296 If there is no such symbol in OBARRAY, return nil.
3298 Also store the bucket number in oblookup_last_bucket_number. */
3301 oblookup (obarray
, ptr
, size
, size_byte
)
3302 Lisp_Object obarray
;
3303 register const char *ptr
;
3304 int size
, size_byte
;
3308 register Lisp_Object tail
;
3309 Lisp_Object bucket
, tem
;
3311 if (!VECTORP (obarray
)
3312 || (obsize
= XVECTOR (obarray
)->size
) == 0)
3314 obarray
= check_obarray (obarray
);
3315 obsize
= XVECTOR (obarray
)->size
;
3317 /* This is sometimes needed in the middle of GC. */
3318 obsize
&= ~ARRAY_MARK_FLAG
;
3319 /* Combining next two lines breaks VMS C 2.3. */
3320 hash
= hash_string (ptr
, size_byte
);
3322 bucket
= XVECTOR (obarray
)->contents
[hash
];
3323 oblookup_last_bucket_number
= hash
;
3324 if (EQ (bucket
, make_number (0)))
3326 else if (!SYMBOLP (bucket
))
3327 error ("Bad data in guts of obarray"); /* Like CADR error message */
3329 for (tail
= bucket
; ; XSETSYMBOL (tail
, XSYMBOL (tail
)->next
))
3331 if (SBYTES (SYMBOL_NAME (tail
)) == size_byte
3332 && SCHARS (SYMBOL_NAME (tail
)) == size
3333 && !bcmp (SDATA (SYMBOL_NAME (tail
)), ptr
, size_byte
))
3335 else if (XSYMBOL (tail
)->next
== 0)
3338 XSETINT (tem
, hash
);
3343 hash_string (ptr
, len
)
3344 const unsigned char *ptr
;
3347 register const unsigned char *p
= ptr
;
3348 register const unsigned char *end
= p
+ len
;
3349 register unsigned char c
;
3350 register int hash
= 0;
3355 if (c
>= 0140) c
-= 40;
3356 hash
= ((hash
<<3) + (hash
>>28) + c
);
3358 return hash
& 07777777777;
3362 map_obarray (obarray
, fn
, arg
)
3363 Lisp_Object obarray
;
3364 void (*fn
) P_ ((Lisp_Object
, Lisp_Object
));
3368 register Lisp_Object tail
;
3369 CHECK_VECTOR (obarray
);
3370 for (i
= XVECTOR (obarray
)->size
- 1; i
>= 0; i
--)
3372 tail
= XVECTOR (obarray
)->contents
[i
];
3377 if (XSYMBOL (tail
)->next
== 0)
3379 XSETSYMBOL (tail
, XSYMBOL (tail
)->next
);
3385 mapatoms_1 (sym
, function
)
3386 Lisp_Object sym
, function
;
3388 call1 (function
, sym
);
3391 DEFUN ("mapatoms", Fmapatoms
, Smapatoms
, 1, 2, 0,
3392 doc
: /* Call FUNCTION on every symbol in OBARRAY.
3393 OBARRAY defaults to the value of `obarray'. */)
3395 Lisp_Object function
, obarray
;
3397 if (NILP (obarray
)) obarray
= Vobarray
;
3398 obarray
= check_obarray (obarray
);
3400 map_obarray (obarray
, mapatoms_1
, function
);
3404 #define OBARRAY_SIZE 1511
3409 Lisp_Object oblength
;
3413 XSETFASTINT (oblength
, OBARRAY_SIZE
);
3415 Qnil
= Fmake_symbol (make_pure_string ("nil", 3, 3, 0));
3416 Vobarray
= Fmake_vector (oblength
, make_number (0));
3417 initial_obarray
= Vobarray
;
3418 staticpro (&initial_obarray
);
3419 /* Intern nil in the obarray */
3420 XSYMBOL (Qnil
)->interned
= SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
3421 XSYMBOL (Qnil
)->constant
= 1;
3423 /* These locals are to kludge around a pyramid compiler bug. */
3424 hash
= hash_string ("nil", 3);
3425 /* Separate statement here to avoid VAXC bug. */
3426 hash
%= OBARRAY_SIZE
;
3427 tem
= &XVECTOR (Vobarray
)->contents
[hash
];
3430 Qunbound
= Fmake_symbol (make_pure_string ("unbound", 7, 7, 0));
3431 XSYMBOL (Qnil
)->function
= Qunbound
;
3432 XSYMBOL (Qunbound
)->value
= Qunbound
;
3433 XSYMBOL (Qunbound
)->function
= Qunbound
;
3436 XSYMBOL (Qnil
)->value
= Qnil
;
3437 XSYMBOL (Qnil
)->plist
= Qnil
;
3438 XSYMBOL (Qt
)->value
= Qt
;
3439 XSYMBOL (Qt
)->constant
= 1;
3441 /* Qt is correct even if CANNOT_DUMP. loadup.el will set to nil at end. */
3444 Qvariable_documentation
= intern ("variable-documentation");
3445 staticpro (&Qvariable_documentation
);
3447 read_buffer_size
= 100 + MAX_MULTIBYTE_LENGTH
;
3448 read_buffer
= (char *) xmalloc (read_buffer_size
);
3453 struct Lisp_Subr
*sname
;
3456 sym
= intern (sname
->symbol_name
);
3457 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3460 #ifdef NOTDEF /* use fset in subr.el now */
3462 defalias (sname
, string
)
3463 struct Lisp_Subr
*sname
;
3467 sym
= intern (string
);
3468 XSETSUBR (XSYMBOL (sym
)->function
, sname
);
3472 /* Define an "integer variable"; a symbol whose value is forwarded
3473 to a C variable of type int. Sample call: */
3474 /* DEFVAR_INT ("indent-tabs-mode", &indent_tabs_mode, "Documentation"); */
3476 defvar_int (namestring
, address
)
3480 Lisp_Object sym
, val
;
3481 sym
= intern (namestring
);
3482 val
= allocate_misc ();
3483 XMISCTYPE (val
) = Lisp_Misc_Intfwd
;
3484 XINTFWD (val
)->intvar
= address
;
3485 SET_SYMBOL_VALUE (sym
, val
);
3488 /* Similar but define a variable whose value is t if address contains 1,
3489 nil if address contains 0 */
3491 defvar_bool (namestring
, address
)
3495 Lisp_Object sym
, val
;
3496 sym
= intern (namestring
);
3497 val
= allocate_misc ();
3498 XMISCTYPE (val
) = Lisp_Misc_Boolfwd
;
3499 XBOOLFWD (val
)->boolvar
= address
;
3500 SET_SYMBOL_VALUE (sym
, val
);
3501 Vbyte_boolean_vars
= Fcons (sym
, Vbyte_boolean_vars
);
3504 /* Similar but define a variable whose value is the Lisp Object stored
3505 at address. Two versions: with and without gc-marking of the C
3506 variable. The nopro version is used when that variable will be
3507 gc-marked for some other reason, since marking the same slot twice
3508 can cause trouble with strings. */
3510 defvar_lisp_nopro (namestring
, address
)
3512 Lisp_Object
*address
;
3514 Lisp_Object sym
, val
;
3515 sym
= intern (namestring
);
3516 val
= allocate_misc ();
3517 XMISCTYPE (val
) = Lisp_Misc_Objfwd
;
3518 XOBJFWD (val
)->objvar
= address
;
3519 SET_SYMBOL_VALUE (sym
, val
);
3523 defvar_lisp (namestring
, address
)
3525 Lisp_Object
*address
;
3527 defvar_lisp_nopro (namestring
, address
);
3528 staticpro (address
);
3531 /* Similar but define a variable whose value is the Lisp Object stored in
3532 the current buffer. address is the address of the slot in the buffer
3533 that is current now. */
3536 defvar_per_buffer (namestring
, address
, type
, doc
)
3538 Lisp_Object
*address
;
3542 Lisp_Object sym
, val
;
3545 sym
= intern (namestring
);
3546 val
= allocate_misc ();
3547 offset
= (char *)address
- (char *)current_buffer
;
3549 XMISCTYPE (val
) = Lisp_Misc_Buffer_Objfwd
;
3550 XBUFFER_OBJFWD (val
)->offset
= offset
;
3551 SET_SYMBOL_VALUE (sym
, val
);
3552 PER_BUFFER_SYMBOL (offset
) = sym
;
3553 PER_BUFFER_TYPE (offset
) = type
;
3555 if (PER_BUFFER_IDX (offset
) == 0)
3556 /* Did a DEFVAR_PER_BUFFER without initializing the corresponding
3557 slot of buffer_local_flags */
3562 /* Similar but define a variable whose value is the Lisp Object stored
3563 at a particular offset in the current kboard object. */
3566 defvar_kboard (namestring
, offset
)
3570 Lisp_Object sym
, val
;
3571 sym
= intern (namestring
);
3572 val
= allocate_misc ();
3573 XMISCTYPE (val
) = Lisp_Misc_Kboard_Objfwd
;
3574 XKBOARD_OBJFWD (val
)->offset
= offset
;
3575 SET_SYMBOL_VALUE (sym
, val
);
3578 /* Record the value of load-path used at the start of dumping
3579 so we can see if the site changed it later during dumping. */
3580 static Lisp_Object dump_path
;
3586 int turn_off_warning
= 0;
3588 /* Compute the default load-path. */
3590 normal
= PATH_LOADSEARCH
;
3591 Vload_path
= decode_env_path (0, normal
);
3593 if (NILP (Vpurify_flag
))
3594 normal
= PATH_LOADSEARCH
;
3596 normal
= PATH_DUMPLOADSEARCH
;
3598 /* In a dumped Emacs, we normally have to reset the value of
3599 Vload_path from PATH_LOADSEARCH, since the value that was dumped
3600 uses ../lisp, instead of the path of the installed elisp
3601 libraries. However, if it appears that Vload_path was changed
3602 from the default before dumping, don't override that value. */
3605 if (! NILP (Fequal (dump_path
, Vload_path
)))
3607 Vload_path
= decode_env_path (0, normal
);
3608 if (!NILP (Vinstallation_directory
))
3610 Lisp_Object tem
, tem1
, sitelisp
;
3612 /* Remove site-lisp dirs from path temporarily and store
3613 them in sitelisp, then conc them on at the end so
3614 they're always first in path. */
3618 tem
= Fcar (Vload_path
);
3619 tem1
= Fstring_match (build_string ("site-lisp"),
3623 Vload_path
= Fcdr (Vload_path
);
3624 sitelisp
= Fcons (tem
, sitelisp
);
3630 /* Add to the path the lisp subdir of the
3631 installation dir, if it exists. */
3632 tem
= Fexpand_file_name (build_string ("lisp"),
3633 Vinstallation_directory
);
3634 tem1
= Ffile_exists_p (tem
);
3637 if (NILP (Fmember (tem
, Vload_path
)))
3639 turn_off_warning
= 1;
3640 Vload_path
= Fcons (tem
, Vload_path
);
3644 /* That dir doesn't exist, so add the build-time
3645 Lisp dirs instead. */
3646 Vload_path
= nconc2 (Vload_path
, dump_path
);
3648 /* Add leim under the installation dir, if it exists. */
3649 tem
= Fexpand_file_name (build_string ("leim"),
3650 Vinstallation_directory
);
3651 tem1
= Ffile_exists_p (tem
);
3654 if (NILP (Fmember (tem
, Vload_path
)))
3655 Vload_path
= Fcons (tem
, Vload_path
);
3658 /* Add site-list under the installation dir, if it exists. */
3659 tem
= Fexpand_file_name (build_string ("site-lisp"),
3660 Vinstallation_directory
);
3661 tem1
= Ffile_exists_p (tem
);
3664 if (NILP (Fmember (tem
, Vload_path
)))
3665 Vload_path
= Fcons (tem
, Vload_path
);
3668 /* If Emacs was not built in the source directory,
3669 and it is run from where it was built, add to load-path
3670 the lisp, leim and site-lisp dirs under that directory. */
3672 if (NILP (Fequal (Vinstallation_directory
, Vsource_directory
)))
3676 tem
= Fexpand_file_name (build_string ("src/Makefile"),
3677 Vinstallation_directory
);
3678 tem1
= Ffile_exists_p (tem
);
3680 /* Don't be fooled if they moved the entire source tree
3681 AFTER dumping Emacs. If the build directory is indeed
3682 different from the source dir, src/Makefile.in and
3683 src/Makefile will not be found together. */
3684 tem
= Fexpand_file_name (build_string ("src/Makefile.in"),
3685 Vinstallation_directory
);
3686 tem2
= Ffile_exists_p (tem
);
3687 if (!NILP (tem1
) && NILP (tem2
))
3689 tem
= Fexpand_file_name (build_string ("lisp"),
3692 if (NILP (Fmember (tem
, Vload_path
)))
3693 Vload_path
= Fcons (tem
, Vload_path
);
3695 tem
= Fexpand_file_name (build_string ("leim"),
3698 if (NILP (Fmember (tem
, Vload_path
)))
3699 Vload_path
= Fcons (tem
, Vload_path
);
3701 tem
= Fexpand_file_name (build_string ("site-lisp"),
3704 if (NILP (Fmember (tem
, Vload_path
)))
3705 Vload_path
= Fcons (tem
, Vload_path
);
3708 if (!NILP (sitelisp
))
3709 Vload_path
= nconc2 (Fnreverse (sitelisp
), Vload_path
);
3715 /* NORMAL refers to the lisp dir in the source directory. */
3716 /* We used to add ../lisp at the front here, but
3717 that caused trouble because it was copied from dump_path
3718 into Vload_path, aboe, when Vinstallation_directory was non-nil.
3719 It should be unnecessary. */
3720 Vload_path
= decode_env_path (0, normal
);
3721 dump_path
= Vload_path
;
3725 #if (!(defined(WINDOWSNT) || (defined(HAVE_CARBON))))
3726 /* When Emacs is invoked over network shares on NT, PATH_LOADSEARCH is
3727 almost never correct, thereby causing a warning to be printed out that
3728 confuses users. Since PATH_LOADSEARCH is always overridden by the
3729 EMACSLOADPATH environment variable below, disable the warning on NT.
3730 Also, when using the "self-contained" option for Carbon Emacs for MacOSX,
3731 the "standard" paths may not exist and would be overridden by
3732 EMACSLOADPATH as on NT. Since this depends on how the executable
3733 was build and packaged, turn off the warnings in general */
3735 /* Warn if dirs in the *standard* path don't exist. */
3736 if (!turn_off_warning
)
3738 Lisp_Object path_tail
;
3740 for (path_tail
= Vload_path
;
3742 path_tail
= XCDR (path_tail
))
3744 Lisp_Object dirfile
;
3745 dirfile
= Fcar (path_tail
);
3746 if (STRINGP (dirfile
))
3748 dirfile
= Fdirectory_file_name (dirfile
);
3749 if (access (SDATA (dirfile
), 0) < 0)
3750 dir_warning ("Warning: Lisp directory `%s' does not exist.\n",
3755 #endif /* !(WINDOWSNT || HAVE_CARBON) */
3757 /* If the EMACSLOADPATH environment variable is set, use its value.
3758 This doesn't apply if we're dumping. */
3760 if (NILP (Vpurify_flag
)
3761 && egetenv ("EMACSLOADPATH"))
3763 Vload_path
= decode_env_path ("EMACSLOADPATH", normal
);
3767 load_in_progress
= 0;
3768 Vload_file_name
= Qnil
;
3770 load_descriptor_list
= Qnil
;
3772 Vstandard_input
= Qt
;
3773 Vloads_in_progress
= Qnil
;
3776 /* Print a warning, using format string FORMAT, that directory DIRNAME
3777 does not exist. Print it on stderr and put it in *Message*. */
3780 dir_warning (format
, dirname
)
3782 Lisp_Object dirname
;
3785 = (char *) alloca (SCHARS (dirname
) + strlen (format
) + 5);
3787 fprintf (stderr
, format
, SDATA (dirname
));
3788 sprintf (buffer
, format
, SDATA (dirname
));
3789 /* Don't log the warning before we've initialized!! */
3791 message_dolog (buffer
, strlen (buffer
), 0, STRING_MULTIBYTE (dirname
));
3798 defsubr (&Sread_from_string
);
3800 defsubr (&Sintern_soft
);
3801 defsubr (&Sunintern
);
3803 defsubr (&Seval_buffer
);
3804 defsubr (&Seval_region
);
3805 defsubr (&Sread_char
);
3806 defsubr (&Sread_char_exclusive
);
3807 defsubr (&Sread_event
);
3808 defsubr (&Sget_file_char
);
3809 defsubr (&Smapatoms
);
3810 defsubr (&Slocate_file_internal
);
3812 DEFVAR_LISP ("obarray", &Vobarray
,
3813 doc
: /* Symbol table for use by `intern' and `read'.
3814 It is a vector whose length ought to be prime for best results.
3815 The vector's contents don't make sense if examined from Lisp programs;
3816 to find all the symbols in an obarray, use `mapatoms'. */);
3818 DEFVAR_LISP ("values", &Vvalues
,
3819 doc
: /* List of values of all expressions which were read, evaluated and printed.
3820 Order is reverse chronological. */);
3822 DEFVAR_LISP ("standard-input", &Vstandard_input
,
3823 doc
: /* Stream for read to get input from.
3824 See documentation of `read' for possible values. */);
3825 Vstandard_input
= Qt
;
3827 DEFVAR_LISP ("read-with-symbol-positions", &Vread_with_symbol_positions
,
3828 doc
: /* If non-nil, add position of read symbols to `read-symbol-positions-list'.
3830 If this variable is a buffer, then only forms read from that buffer
3831 will be added to `read-symbol-positions-list'.
3832 If this variable is t, then all read forms will be added.
3833 The effect of all other values other than nil are not currently
3834 defined, although they may be in the future.
3836 The positions are relative to the last call to `read' or
3837 `read-from-string'. It is probably a bad idea to set this variable at
3838 the toplevel; bind it instead. */);
3839 Vread_with_symbol_positions
= Qnil
;
3841 DEFVAR_LISP ("read-symbol-positions-list", &Vread_symbol_positions_list
,
3842 doc
: /* A list mapping read symbols to their positions.
3843 This variable is modified during calls to `read' or
3844 `read-from-string', but only when `read-with-symbol-positions' is
3847 Each element of the list looks like (SYMBOL . CHAR-POSITION), where
3848 CHAR-POSITION is an integer giving the offset of that occurrence of the
3849 symbol from the position where `read' or `read-from-string' started.
3851 Note that a symbol will appear multiple times in this list, if it was
3852 read multiple times. The list is in the same order as the symbols
3854 Vread_symbol_positions_list
= Qnil
;
3856 DEFVAR_LISP ("load-path", &Vload_path
,
3857 doc
: /* *List of directories to search for files to load.
3858 Each element is a string (directory name) or nil (try default directory).
3859 Initialized based on EMACSLOADPATH environment variable, if any,
3860 otherwise to default specified by file `epaths.h' when Emacs was built. */);
3862 DEFVAR_LISP ("load-suffixes", &Vload_suffixes
,
3863 doc
: /* *List of suffixes to try for files to load.
3864 This list should not include the empty string. */);
3865 Vload_suffixes
= Fcons (build_string (".elc"),
3866 Fcons (build_string (".el"), Qnil
));
3867 /* We don't use empty_string because it's not initialized yet. */
3868 default_suffixes
= Fcons (build_string (""), Qnil
);
3869 staticpro (&default_suffixes
);
3871 DEFVAR_BOOL ("load-in-progress", &load_in_progress
,
3872 doc
: /* Non-nil iff inside of `load'. */);
3874 DEFVAR_LISP ("after-load-alist", &Vafter_load_alist
,
3875 doc
: /* An alist of expressions to be evalled when particular files are loaded.
3876 Each element looks like (FILENAME FORMS...).
3877 When `load' is run and the file-name argument is FILENAME,
3878 the FORMS in the corresponding element are executed at the end of loading.
3880 FILENAME must match exactly! Normally FILENAME is the name of a library,
3881 with no directory specified, since that is how `load' is normally called.
3882 An error in FORMS does not undo the load,
3883 but does prevent execution of the rest of the FORMS.
3884 FILENAME can also be a symbol (a feature) and FORMS are then executed
3885 when the corresponding call to `provide' is made. */);
3886 Vafter_load_alist
= Qnil
;
3888 DEFVAR_LISP ("load-history", &Vload_history
,
3889 doc
: /* Alist mapping file names to symbols and features.
3890 Each alist element is a list that starts with a file name,
3891 except for one element (optional) that starts with nil and describes
3892 definitions evaluated from buffers not visiting files.
3893 The remaining elements of each list are symbols defined as variables
3894 and cons cells of the form `(provide . FEATURE)', `(require . FEATURE)',
3895 `(defun . FUNCTION)', `(autoload . SYMBOL)', and `(t . SYMBOL)'.
3896 An element `(t . SYMBOL)' precedes an entry `(defun . FUNCTION)',
3897 and means that SYMBOL was an autoload before this file redefined it
3900 For a preloaded file, the file name recorded is relative to the main Lisp
3901 directory. These names are converted to absolute by `file-loadhist-lookup'. */);
3902 Vload_history
= Qnil
;
3904 DEFVAR_LISP ("load-file-name", &Vload_file_name
,
3905 doc
: /* Full name of file being loaded by `load'. */);
3906 Vload_file_name
= Qnil
;
3908 DEFVAR_LISP ("user-init-file", &Vuser_init_file
,
3909 doc
: /* File name, including directory, of user's initialization file.
3910 If the file loaded had extension `.elc', and the corresponding source file
3911 exists, this variable contains the name of source file, suitable for use
3912 by functions like `custom-save-all' which edit the init file. */);
3913 Vuser_init_file
= Qnil
;
3915 DEFVAR_LISP ("current-load-list", &Vcurrent_load_list
,
3916 doc
: /* Used for internal purposes by `load'. */);
3917 Vcurrent_load_list
= Qnil
;
3919 DEFVAR_LISP ("load-read-function", &Vload_read_function
,
3920 doc
: /* Function used by `load' and `eval-region' for reading expressions.
3921 The default is nil, which means use the function `read'. */);
3922 Vload_read_function
= Qnil
;
3924 DEFVAR_LISP ("load-source-file-function", &Vload_source_file_function
,
3925 doc
: /* Function called in `load' for loading an Emacs lisp source file.
3926 This function is for doing code conversion before reading the source file.
3927 If nil, loading is done without any code conversion.
3928 Arguments are FULLNAME, FILE, NOERROR, NOMESSAGE, where
3929 FULLNAME is the full name of FILE.
3930 See `load' for the meaning of the remaining arguments. */);
3931 Vload_source_file_function
= Qnil
;
3933 DEFVAR_BOOL ("load-force-doc-strings", &load_force_doc_strings
,
3934 doc
: /* Non-nil means `load' should force-load all dynamic doc strings.
3935 This is useful when the file being loaded is a temporary copy. */);
3936 load_force_doc_strings
= 0;
3938 DEFVAR_BOOL ("load-convert-to-unibyte", &load_convert_to_unibyte
,
3939 doc
: /* Non-nil means `read' converts strings to unibyte whenever possible.
3940 This is normally bound by `load' and `eval-buffer' to control `read',
3941 and is not meant for users to change. */);
3942 load_convert_to_unibyte
= 0;
3944 DEFVAR_LISP ("source-directory", &Vsource_directory
,
3945 doc
: /* Directory in which Emacs sources were found when Emacs was built.
3946 You cannot count on them to still be there! */);
3948 = Fexpand_file_name (build_string ("../"),
3949 Fcar (decode_env_path (0, PATH_DUMPLOADSEARCH
)));
3951 DEFVAR_LISP ("preloaded-file-list", &Vpreloaded_file_list
,
3952 doc
: /* List of files that were preloaded (when dumping Emacs). */);
3953 Vpreloaded_file_list
= Qnil
;
3955 DEFVAR_LISP ("byte-boolean-vars", &Vbyte_boolean_vars
,
3956 doc
: /* List of all DEFVAR_BOOL variables, used by the byte code optimizer. */);
3957 Vbyte_boolean_vars
= Qnil
;
3959 DEFVAR_BOOL ("load-dangerous-libraries", &load_dangerous_libraries
,
3960 doc
: /* Non-nil means load dangerous compiled Lisp files.
3961 Some versions of XEmacs use different byte codes than Emacs. These
3962 incompatible byte codes can make Emacs crash when it tries to execute
3964 load_dangerous_libraries
= 0;
3966 DEFVAR_LISP ("bytecomp-version-regexp", &Vbytecomp_version_regexp
,
3967 doc
: /* Regular expression matching safe to load compiled Lisp files.
3968 When Emacs loads a compiled Lisp file, it reads the first 512 bytes
3969 from the file, and matches them against this regular expression.
3970 When the regular expression matches, the file is considered to be safe
3971 to load. See also `load-dangerous-libraries'. */);
3972 Vbytecomp_version_regexp
3973 = build_string ("^;;;.\\(in Emacs version\\|bytecomp version FSF\\)");
3975 DEFVAR_LISP ("eval-buffer-list", &Veval_buffer_list
,
3976 doc
: /* List of buffers being read from by calls to `eval-buffer' and `eval-region'. */);
3977 Veval_buffer_list
= Qnil
;
3979 /* Vsource_directory was initialized in init_lread. */
3981 load_descriptor_list
= Qnil
;
3982 staticpro (&load_descriptor_list
);
3984 Qcurrent_load_list
= intern ("current-load-list");
3985 staticpro (&Qcurrent_load_list
);
3987 Qstandard_input
= intern ("standard-input");
3988 staticpro (&Qstandard_input
);
3990 Qread_char
= intern ("read-char");
3991 staticpro (&Qread_char
);
3993 Qget_file_char
= intern ("get-file-char");
3994 staticpro (&Qget_file_char
);
3996 Qbackquote
= intern ("`");
3997 staticpro (&Qbackquote
);
3998 Qcomma
= intern (",");
3999 staticpro (&Qcomma
);
4000 Qcomma_at
= intern (",@");
4001 staticpro (&Qcomma_at
);
4002 Qcomma_dot
= intern (",.");
4003 staticpro (&Qcomma_dot
);
4005 Qinhibit_file_name_operation
= intern ("inhibit-file-name-operation");
4006 staticpro (&Qinhibit_file_name_operation
);
4008 Qascii_character
= intern ("ascii-character");
4009 staticpro (&Qascii_character
);
4011 Qfunction
= intern ("function");
4012 staticpro (&Qfunction
);
4014 Qload
= intern ("load");
4017 Qload_file_name
= intern ("load-file-name");
4018 staticpro (&Qload_file_name
);
4020 Qeval_buffer_list
= intern ("eval-buffer-list");
4021 staticpro (&Qeval_buffer_list
);
4023 staticpro (&dump_path
);
4025 staticpro (&read_objects
);
4026 read_objects
= Qnil
;
4027 staticpro (&seen_list
);
4030 Vloads_in_progress
= Qnil
;
4031 staticpro (&Vloads_in_progress
);
4034 /* arch-tag: a0d02733-0f96-4844-a659-9fd53c4f414d
4035 (do not change this comment) */