1 /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter.
2 Copyright (C) 1985, 1986, 1988, 1993, 1994, 1995, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
32 #include "syssignal.h"
38 /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */
39 #ifndef IEEE_FLOATING_POINT
40 #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \
41 && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128)
42 #define IEEE_FLOATING_POINT 1
44 #define IEEE_FLOATING_POINT 0
48 /* Work around a problem that happens because math.h on hpux 7
49 defines two static variables--which, in Emacs, are not really static,
50 because `static' is defined as nothing. The problem is that they are
51 here, in floatfns.c, and in lread.c.
52 These macros prevent the name conflict. */
53 #if defined (HPUX) && !defined (HPUX8)
54 #define _MAXLDBL data_c_maxldbl
55 #define _NMAXLDBL data_c_nmaxldbl
61 extern double atof ();
64 Lisp_Object Qnil
, Qt
, Qquote
, Qlambda
, Qsubr
, Qunbound
;
65 Lisp_Object Qerror_conditions
, Qerror_message
, Qtop_level
;
66 Lisp_Object Qerror
, Qquit
, Qwrong_type_argument
, Qargs_out_of_range
;
67 Lisp_Object Qvoid_variable
, Qvoid_function
, Qcyclic_function_indirection
;
68 Lisp_Object Qcyclic_variable_indirection
, Qcircular_list
;
69 Lisp_Object Qsetting_constant
, Qinvalid_read_syntax
;
70 Lisp_Object Qinvalid_function
, Qwrong_number_of_arguments
, Qno_catch
;
71 Lisp_Object Qend_of_file
, Qarith_error
, Qmark_inactive
;
72 Lisp_Object Qbeginning_of_buffer
, Qend_of_buffer
, Qbuffer_read_only
;
73 Lisp_Object Qtext_read_only
;
75 Lisp_Object Qintegerp
, Qnatnump
, Qwholenump
, Qsymbolp
, Qlistp
, Qconsp
;
76 Lisp_Object Qstringp
, Qarrayp
, Qsequencep
, Qbufferp
;
77 Lisp_Object Qchar_or_string_p
, Qmarkerp
, Qinteger_or_marker_p
, Qvectorp
;
78 Lisp_Object Qbuffer_or_string_p
, Qkeywordp
;
79 Lisp_Object Qboundp
, Qfboundp
;
80 Lisp_Object Qchar_table_p
, Qvector_or_char_table_p
;
83 Lisp_Object Qad_advice_info
, Qad_activate_internal
;
85 Lisp_Object Qrange_error
, Qdomain_error
, Qsingularity_error
;
86 Lisp_Object Qoverflow_error
, Qunderflow_error
;
89 Lisp_Object Qnumberp
, Qnumber_or_marker_p
;
92 static Lisp_Object Qsymbol
, Qstring
, Qcons
, Qmarker
, Qoverlay
;
93 static Lisp_Object Qfloat
, Qwindow_configuration
, Qwindow
;
95 static Lisp_Object Qcompiled_function
, Qbuffer
, Qframe
, Qvector
;
96 static Lisp_Object Qchar_table
, Qbool_vector
, Qhash_table
;
97 static Lisp_Object Qsubrp
, Qmany
, Qunevalled
;
99 static Lisp_Object swap_in_symval_forwarding
P_ ((Lisp_Object
, Lisp_Object
));
101 Lisp_Object Vmost_positive_fixnum
, Vmost_negative_fixnum
;
105 circular_list_error (list
)
108 Fsignal (Qcircular_list
, list
);
113 wrong_type_argument (predicate
, value
)
114 register Lisp_Object predicate
, value
;
116 register Lisp_Object tem
;
119 /* If VALUE is not even a valid Lisp object, abort here
120 where we can get a backtrace showing where it came from. */
121 if ((unsigned int) XGCTYPE (value
) >= Lisp_Type_Limit
)
124 value
= Fsignal (Qwrong_type_argument
, Fcons (predicate
, Fcons (value
, Qnil
)));
125 tem
= call1 (predicate
, value
);
134 error ("Attempt to modify read-only object");
138 args_out_of_range (a1
, a2
)
142 Fsignal (Qargs_out_of_range
, Fcons (a1
, Fcons (a2
, Qnil
)));
146 args_out_of_range_3 (a1
, a2
, a3
)
147 Lisp_Object a1
, a2
, a3
;
150 Fsignal (Qargs_out_of_range
, Fcons (a1
, Fcons (a2
, Fcons (a3
, Qnil
))));
153 /* On some machines, XINT needs a temporary location.
154 Here it is, in case it is needed. */
156 int sign_extend_temp
;
158 /* On a few machines, XINT can only be done by calling this. */
161 sign_extend_lisp_int (num
)
164 if (num
& (((EMACS_INT
) 1) << (VALBITS
- 1)))
165 return num
| (((EMACS_INT
) (-1)) << VALBITS
);
167 return num
& ((((EMACS_INT
) 1) << VALBITS
) - 1);
170 /* Data type predicates */
172 DEFUN ("eq", Feq
, Seq
, 2, 2, 0,
173 doc
: /* Return t if the two args are the same Lisp object. */)
175 Lisp_Object obj1
, obj2
;
182 DEFUN ("null", Fnull
, Snull
, 1, 1, 0,
183 doc
: /* Return t if OBJECT is nil. */)
192 DEFUN ("type-of", Ftype_of
, Stype_of
, 1, 1, 0,
193 doc
: /* Return a symbol representing the type of OBJECT.
194 The symbol returned names the object's basic type;
195 for example, (type-of 1) returns `integer'. */)
199 switch (XGCTYPE (object
))
214 switch (XMISCTYPE (object
))
216 case Lisp_Misc_Marker
:
218 case Lisp_Misc_Overlay
:
220 case Lisp_Misc_Float
:
225 case Lisp_Vectorlike
:
226 if (GC_WINDOW_CONFIGURATIONP (object
))
227 return Qwindow_configuration
;
228 if (GC_PROCESSP (object
))
230 if (GC_WINDOWP (object
))
232 if (GC_SUBRP (object
))
234 if (GC_COMPILEDP (object
))
235 return Qcompiled_function
;
236 if (GC_BUFFERP (object
))
238 if (GC_CHAR_TABLE_P (object
))
240 if (GC_BOOL_VECTOR_P (object
))
242 if (GC_FRAMEP (object
))
244 if (GC_HASH_TABLE_P (object
))
256 DEFUN ("consp", Fconsp
, Sconsp
, 1, 1, 0,
257 doc
: /* Return t if OBJECT is a cons cell. */)
266 DEFUN ("atom", Fatom
, Satom
, 1, 1, 0,
267 doc
: /* Return t if OBJECT is not a cons cell. This includes nil. */)
276 DEFUN ("listp", Flistp
, Slistp
, 1, 1, 0,
277 doc
: /* Return t if OBJECT is a list. This includes nil. */)
281 if (CONSP (object
) || NILP (object
))
286 DEFUN ("nlistp", Fnlistp
, Snlistp
, 1, 1, 0,
287 doc
: /* Return t if OBJECT is not a list. Lists include nil. */)
291 if (CONSP (object
) || NILP (object
))
296 DEFUN ("symbolp", Fsymbolp
, Ssymbolp
, 1, 1, 0,
297 doc
: /* Return t if OBJECT is a symbol. */)
301 if (SYMBOLP (object
))
306 /* Define this in C to avoid unnecessarily consing up the symbol
308 DEFUN ("keywordp", Fkeywordp
, Skeywordp
, 1, 1, 0,
309 doc
: /* Return t if OBJECT is a keyword.
310 This means that it is a symbol with a print name beginning with `:'
311 interned in the initial obarray. */)
316 && SREF (SYMBOL_NAME (object
), 0) == ':'
317 && SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (object
))
322 DEFUN ("vectorp", Fvectorp
, Svectorp
, 1, 1, 0,
323 doc
: /* Return t if OBJECT is a vector. */)
327 if (VECTORP (object
))
332 DEFUN ("stringp", Fstringp
, Sstringp
, 1, 1, 0,
333 doc
: /* Return t if OBJECT is a string. */)
337 if (STRINGP (object
))
342 DEFUN ("multibyte-string-p", Fmultibyte_string_p
, Smultibyte_string_p
,
344 doc
: /* Return t if OBJECT is a multibyte string. */)
348 if (STRINGP (object
) && STRING_MULTIBYTE (object
))
353 DEFUN ("char-table-p", Fchar_table_p
, Schar_table_p
, 1, 1, 0,
354 doc
: /* Return t if OBJECT is a char-table. */)
358 if (CHAR_TABLE_P (object
))
363 DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p
,
364 Svector_or_char_table_p
, 1, 1, 0,
365 doc
: /* Return t if OBJECT is a char-table or vector. */)
369 if (VECTORP (object
) || CHAR_TABLE_P (object
))
374 DEFUN ("bool-vector-p", Fbool_vector_p
, Sbool_vector_p
, 1, 1, 0,
375 doc
: /* Return t if OBJECT is a bool-vector. */)
379 if (BOOL_VECTOR_P (object
))
384 DEFUN ("arrayp", Farrayp
, Sarrayp
, 1, 1, 0,
385 doc
: /* Return t if OBJECT is an array (string or vector). */)
389 if (VECTORP (object
) || STRINGP (object
)
390 || CHAR_TABLE_P (object
) || BOOL_VECTOR_P (object
))
395 DEFUN ("sequencep", Fsequencep
, Ssequencep
, 1, 1, 0,
396 doc
: /* Return t if OBJECT is a sequence (list or array). */)
398 register Lisp_Object object
;
400 if (CONSP (object
) || NILP (object
) || VECTORP (object
) || STRINGP (object
)
401 || CHAR_TABLE_P (object
) || BOOL_VECTOR_P (object
))
406 DEFUN ("bufferp", Fbufferp
, Sbufferp
, 1, 1, 0,
407 doc
: /* Return t if OBJECT is an editor buffer. */)
411 if (BUFFERP (object
))
416 DEFUN ("markerp", Fmarkerp
, Smarkerp
, 1, 1, 0,
417 doc
: /* Return t if OBJECT is a marker (editor pointer). */)
421 if (MARKERP (object
))
426 DEFUN ("subrp", Fsubrp
, Ssubrp
, 1, 1, 0,
427 doc
: /* Return t if OBJECT is a built-in function. */)
436 DEFUN ("byte-code-function-p", Fbyte_code_function_p
, Sbyte_code_function_p
,
438 doc
: /* Return t if OBJECT is a byte-compiled function object. */)
442 if (COMPILEDP (object
))
447 DEFUN ("char-or-string-p", Fchar_or_string_p
, Schar_or_string_p
, 1, 1, 0,
448 doc
: /* Return t if OBJECT is a character (an integer) or a string. */)
450 register Lisp_Object object
;
452 if (INTEGERP (object
) || STRINGP (object
))
457 DEFUN ("integerp", Fintegerp
, Sintegerp
, 1, 1, 0,
458 doc
: /* Return t if OBJECT is an integer. */)
462 if (INTEGERP (object
))
467 DEFUN ("integer-or-marker-p", Finteger_or_marker_p
, Sinteger_or_marker_p
, 1, 1, 0,
468 doc
: /* Return t if OBJECT is an integer or a marker (editor pointer). */)
470 register Lisp_Object object
;
472 if (MARKERP (object
) || INTEGERP (object
))
477 DEFUN ("natnump", Fnatnump
, Snatnump
, 1, 1, 0,
478 doc
: /* Return t if OBJECT is a nonnegative integer. */)
482 if (NATNUMP (object
))
487 DEFUN ("numberp", Fnumberp
, Snumberp
, 1, 1, 0,
488 doc
: /* Return t if OBJECT is a number (floating point or integer). */)
492 if (NUMBERP (object
))
498 DEFUN ("number-or-marker-p", Fnumber_or_marker_p
,
499 Snumber_or_marker_p
, 1, 1, 0,
500 doc
: /* Return t if OBJECT is a number or a marker. */)
504 if (NUMBERP (object
) || MARKERP (object
))
509 DEFUN ("floatp", Ffloatp
, Sfloatp
, 1, 1, 0,
510 doc
: /* Return t if OBJECT is a floating point number. */)
520 /* Extract and set components of lists */
522 DEFUN ("car", Fcar
, Scar
, 1, 1, 0,
523 doc
: /* Return the car of LIST. If arg is nil, return nil.
524 Error if arg is not nil and not a cons cell. See also `car-safe'. */)
526 register Lisp_Object list
;
532 else if (EQ (list
, Qnil
))
535 list
= wrong_type_argument (Qlistp
, list
);
539 DEFUN ("car-safe", Fcar_safe
, Scar_safe
, 1, 1, 0,
540 doc
: /* Return the car of OBJECT if it is a cons cell, or else nil. */)
545 return XCAR (object
);
550 DEFUN ("cdr", Fcdr
, Scdr
, 1, 1, 0,
551 doc
: /* Return the cdr of LIST. If arg is nil, return nil.
552 Error if arg is not nil and not a cons cell. See also `cdr-safe'. */)
554 register Lisp_Object list
;
560 else if (EQ (list
, Qnil
))
563 list
= wrong_type_argument (Qlistp
, list
);
567 DEFUN ("cdr-safe", Fcdr_safe
, Scdr_safe
, 1, 1, 0,
568 doc
: /* Return the cdr of OBJECT if it is a cons cell, or else nil. */)
573 return XCDR (object
);
578 DEFUN ("setcar", Fsetcar
, Ssetcar
, 2, 2, 0,
579 doc
: /* Set the car of CELL to be NEWCAR. Returns NEWCAR. */)
581 register Lisp_Object cell
, newcar
;
584 cell
= wrong_type_argument (Qconsp
, cell
);
587 XSETCAR (cell
, newcar
);
591 DEFUN ("setcdr", Fsetcdr
, Ssetcdr
, 2, 2, 0,
592 doc
: /* Set the cdr of CELL to be NEWCDR. Returns NEWCDR. */)
594 register Lisp_Object cell
, newcdr
;
597 cell
= wrong_type_argument (Qconsp
, cell
);
600 XSETCDR (cell
, newcdr
);
604 /* Extract and set components of symbols */
606 DEFUN ("boundp", Fboundp
, Sboundp
, 1, 1, 0,
607 doc
: /* Return t if SYMBOL's value is not void. */)
609 register Lisp_Object symbol
;
611 Lisp_Object valcontents
;
612 CHECK_SYMBOL (symbol
);
614 valcontents
= SYMBOL_VALUE (symbol
);
616 if (BUFFER_LOCAL_VALUEP (valcontents
)
617 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
618 valcontents
= swap_in_symval_forwarding (symbol
, valcontents
);
620 return (EQ (valcontents
, Qunbound
) ? Qnil
: Qt
);
623 DEFUN ("fboundp", Ffboundp
, Sfboundp
, 1, 1, 0,
624 doc
: /* Return t if SYMBOL's function definition is not void. */)
626 register Lisp_Object symbol
;
628 CHECK_SYMBOL (symbol
);
629 return (EQ (XSYMBOL (symbol
)->function
, Qunbound
) ? Qnil
: Qt
);
632 DEFUN ("makunbound", Fmakunbound
, Smakunbound
, 1, 1, 0,
633 doc
: /* Make SYMBOL's value be void.
636 register Lisp_Object symbol
;
638 CHECK_SYMBOL (symbol
);
639 if (XSYMBOL (symbol
)->constant
)
640 return Fsignal (Qsetting_constant
, Fcons (symbol
, Qnil
));
641 Fset (symbol
, Qunbound
);
645 DEFUN ("fmakunbound", Ffmakunbound
, Sfmakunbound
, 1, 1, 0,
646 doc
: /* Make SYMBOL's function definition be void.
649 register Lisp_Object symbol
;
651 CHECK_SYMBOL (symbol
);
652 if (NILP (symbol
) || EQ (symbol
, Qt
))
653 return Fsignal (Qsetting_constant
, Fcons (symbol
, Qnil
));
654 XSYMBOL (symbol
)->function
= Qunbound
;
658 DEFUN ("symbol-function", Fsymbol_function
, Ssymbol_function
, 1, 1, 0,
659 doc
: /* Return SYMBOL's function definition. Error if that is void. */)
661 register Lisp_Object symbol
;
663 CHECK_SYMBOL (symbol
);
664 if (EQ (XSYMBOL (symbol
)->function
, Qunbound
))
665 return Fsignal (Qvoid_function
, Fcons (symbol
, Qnil
));
666 return XSYMBOL (symbol
)->function
;
669 DEFUN ("symbol-plist", Fsymbol_plist
, Ssymbol_plist
, 1, 1, 0,
670 doc
: /* Return SYMBOL's property list. */)
672 register Lisp_Object symbol
;
674 CHECK_SYMBOL (symbol
);
675 return XSYMBOL (symbol
)->plist
;
678 DEFUN ("symbol-name", Fsymbol_name
, Ssymbol_name
, 1, 1, 0,
679 doc
: /* Return SYMBOL's name, a string. */)
681 register Lisp_Object symbol
;
683 register Lisp_Object name
;
685 CHECK_SYMBOL (symbol
);
686 name
= SYMBOL_NAME (symbol
);
690 DEFUN ("fset", Ffset
, Sfset
, 2, 2, 0,
691 doc
: /* Set SYMBOL's function definition to DEFINITION, and return DEFINITION. */)
693 register Lisp_Object symbol
, definition
;
695 CHECK_SYMBOL (symbol
);
696 if (NILP (symbol
) || EQ (symbol
, Qt
))
697 return Fsignal (Qsetting_constant
, Fcons (symbol
, Qnil
));
698 if (!NILP (Vautoload_queue
) && !EQ (XSYMBOL (symbol
)->function
, Qunbound
))
699 Vautoload_queue
= Fcons (Fcons (symbol
, XSYMBOL (symbol
)->function
),
701 XSYMBOL (symbol
)->function
= definition
;
702 /* Handle automatic advice activation */
703 if (CONSP (XSYMBOL (symbol
)->plist
) && !NILP (Fget (symbol
, Qad_advice_info
)))
705 call2 (Qad_activate_internal
, symbol
, Qnil
);
706 definition
= XSYMBOL (symbol
)->function
;
711 extern Lisp_Object Qfunction_documentation
;
713 DEFUN ("defalias", Fdefalias
, Sdefalias
, 2, 3, 0,
714 doc
: /* Set SYMBOL's function definition to DEFINITION, and return DEFINITION.
715 Associates the function with the current load file, if any.
716 The optional third argument DOCSTRING specifies the documentation string
717 for SYMBOL; if it is omitted or nil, SYMBOL uses the documentation string
718 determined by DEFINITION. */)
719 (symbol
, definition
, docstring
)
720 register Lisp_Object symbol
, definition
, docstring
;
722 CHECK_SYMBOL (symbol
);
723 if (CONSP (XSYMBOL (symbol
)->function
)
724 && EQ (XCAR (XSYMBOL (symbol
)->function
), Qautoload
))
725 LOADHIST_ATTACH (Fcons (Qt
, symbol
));
726 definition
= Ffset (symbol
, definition
);
727 LOADHIST_ATTACH (Fcons (Qdefun
, symbol
));
728 if (!NILP (docstring
))
729 Fput (symbol
, Qfunction_documentation
, docstring
);
733 DEFUN ("setplist", Fsetplist
, Ssetplist
, 2, 2, 0,
734 doc
: /* Set SYMBOL's property list to NEWPLIST, and return NEWPLIST. */)
736 register Lisp_Object symbol
, newplist
;
738 CHECK_SYMBOL (symbol
);
739 XSYMBOL (symbol
)->plist
= newplist
;
743 DEFUN ("subr-arity", Fsubr_arity
, Ssubr_arity
, 1, 1, 0,
744 doc
: /* Return minimum and maximum number of args allowed for SUBR.
745 SUBR must be a built-in function.
746 The returned value is a pair (MIN . MAX). MIN is the minimum number
747 of args. MAX is the maximum number or the symbol `many', for a
748 function with `&rest' args, or `unevalled' for a special form. */)
752 short minargs
, maxargs
;
754 wrong_type_argument (Qsubrp
, subr
);
755 minargs
= XSUBR (subr
)->min_args
;
756 maxargs
= XSUBR (subr
)->max_args
;
758 return Fcons (make_number (minargs
), Qmany
);
759 else if (maxargs
== UNEVALLED
)
760 return Fcons (make_number (minargs
), Qunevalled
);
762 return Fcons (make_number (minargs
), make_number (maxargs
));
765 DEFUN ("subr-name", Fsubr_name
, Ssubr_name
, 1, 1, 0,
766 doc
: /* Return name of subroutine SUBR.
767 SUBR must be a built-in function. */)
773 wrong_type_argument (Qsubrp
, subr
);
774 name
= XSUBR (subr
)->symbol_name
;
775 return make_string (name
, strlen (name
));
778 DEFUN ("interactive-form", Finteractive_form
, Sinteractive_form
, 1, 1, 0,
779 doc
: /* Return the interactive form of CMD or nil if none.
780 If CMD is not a command, the return value is nil.
781 Value, if non-nil, is a list \(interactive SPEC). */)
785 Lisp_Object fun
= indirect_function (cmd
);
789 if (XSUBR (fun
)->prompt
)
790 return list2 (Qinteractive
, build_string (XSUBR (fun
)->prompt
));
792 else if (COMPILEDP (fun
))
794 if ((ASIZE (fun
) & PSEUDOVECTOR_SIZE_MASK
) > COMPILED_INTERACTIVE
)
795 return list2 (Qinteractive
, AREF (fun
, COMPILED_INTERACTIVE
));
797 else if (CONSP (fun
))
799 Lisp_Object funcar
= XCAR (fun
);
800 if (EQ (funcar
, Qlambda
))
801 return Fassq (Qinteractive
, Fcdr (XCDR (fun
)));
802 else if (EQ (funcar
, Qautoload
))
806 do_autoload (fun
, cmd
);
808 return Finteractive_form (cmd
);
815 /***********************************************************************
816 Getting and Setting Values of Symbols
817 ***********************************************************************/
819 /* Return the symbol holding SYMBOL's value. Signal
820 `cyclic-variable-indirection' if SYMBOL's chain of variable
821 indirections contains a loop. */
824 indirect_variable (symbol
)
827 Lisp_Object tortoise
, hare
;
829 hare
= tortoise
= symbol
;
831 while (XSYMBOL (hare
)->indirect_variable
)
833 hare
= XSYMBOL (hare
)->value
;
834 if (!XSYMBOL (hare
)->indirect_variable
)
837 hare
= XSYMBOL (hare
)->value
;
838 tortoise
= XSYMBOL (tortoise
)->value
;
840 if (EQ (hare
, tortoise
))
841 Fsignal (Qcyclic_variable_indirection
, Fcons (symbol
, Qnil
));
848 DEFUN ("indirect-variable", Findirect_variable
, Sindirect_variable
, 1, 1, 0,
849 doc
: /* Return the variable at the end of OBJECT's variable chain.
850 If OBJECT is a symbol, follow all variable indirections and return the final
851 variable. If OBJECT is not a symbol, just return it.
852 Signal a cyclic-variable-indirection error if there is a loop in the
853 variable chain of symbols. */)
857 if (SYMBOLP (object
))
858 object
= indirect_variable (object
);
863 /* Given the raw contents of a symbol value cell,
864 return the Lisp value of the symbol.
865 This does not handle buffer-local variables; use
866 swap_in_symval_forwarding for that. */
869 do_symval_forwarding (valcontents
)
870 register Lisp_Object valcontents
;
872 register Lisp_Object val
;
874 if (MISCP (valcontents
))
875 switch (XMISCTYPE (valcontents
))
877 case Lisp_Misc_Intfwd
:
878 XSETINT (val
, *XINTFWD (valcontents
)->intvar
);
881 case Lisp_Misc_Boolfwd
:
882 return (*XBOOLFWD (valcontents
)->boolvar
? Qt
: Qnil
);
884 case Lisp_Misc_Objfwd
:
885 return *XOBJFWD (valcontents
)->objvar
;
887 case Lisp_Misc_Buffer_Objfwd
:
888 offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
889 return PER_BUFFER_VALUE (current_buffer
, offset
);
891 case Lisp_Misc_Kboard_Objfwd
:
892 offset
= XKBOARD_OBJFWD (valcontents
)->offset
;
893 return *(Lisp_Object
*)(offset
+ (char *)current_kboard
);
898 /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell
899 of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the
900 buffer-independent contents of the value cell: forwarded just one
901 step past the buffer-localness.
903 BUF non-zero means set the value in buffer BUF instead of the
904 current buffer. This only plays a role for per-buffer variables. */
907 store_symval_forwarding (symbol
, valcontents
, newval
, buf
)
909 register Lisp_Object valcontents
, newval
;
912 switch (SWITCH_ENUM_CAST (XTYPE (valcontents
)))
915 switch (XMISCTYPE (valcontents
))
917 case Lisp_Misc_Intfwd
:
918 CHECK_NUMBER (newval
);
919 *XINTFWD (valcontents
)->intvar
= XINT (newval
);
920 if (*XINTFWD (valcontents
)->intvar
!= XINT (newval
))
921 error ("Value out of range for variable `%s'",
922 SDATA (SYMBOL_NAME (symbol
)));
925 case Lisp_Misc_Boolfwd
:
926 *XBOOLFWD (valcontents
)->boolvar
= NILP (newval
) ? 0 : 1;
929 case Lisp_Misc_Objfwd
:
930 *XOBJFWD (valcontents
)->objvar
= newval
;
932 /* If this variable is a default for something stored
933 in the buffer itself, such as default-fill-column,
934 find the buffers that don't have local values for it
936 if (XOBJFWD (valcontents
)->objvar
> (Lisp_Object
*) &buffer_defaults
937 && XOBJFWD (valcontents
)->objvar
< (Lisp_Object
*) (&buffer_defaults
+ 1))
939 int offset
= ((char *) XOBJFWD (valcontents
)->objvar
940 - (char *) &buffer_defaults
);
941 int idx
= PER_BUFFER_IDX (offset
);
948 for (tail
= Vbuffer_alist
; CONSP (tail
); tail
= XCDR (tail
))
953 buf
= Fcdr (XCAR (tail
));
954 if (!BUFFERP (buf
)) continue;
957 if (! PER_BUFFER_VALUE_P (b
, idx
))
958 PER_BUFFER_VALUE (b
, offset
) = newval
;
963 case Lisp_Misc_Buffer_Objfwd
:
965 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
968 type
= PER_BUFFER_TYPE (offset
);
969 if (! NILP (type
) && ! NILP (newval
)
970 && XTYPE (newval
) != XINT (type
))
971 buffer_slot_type_mismatch (offset
);
974 buf
= current_buffer
;
975 PER_BUFFER_VALUE (buf
, offset
) = newval
;
979 case Lisp_Misc_Kboard_Objfwd
:
981 char *base
= (char *) current_kboard
;
982 char *p
= base
+ XKBOARD_OBJFWD (valcontents
)->offset
;
983 *(Lisp_Object
*) p
= newval
;
994 valcontents
= SYMBOL_VALUE (symbol
);
995 if (BUFFER_LOCAL_VALUEP (valcontents
)
996 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
997 XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
= newval
;
999 SET_SYMBOL_VALUE (symbol
, newval
);
1003 /* Set up SYMBOL to refer to its global binding.
1004 This makes it safe to alter the status of other bindings. */
1007 swap_in_global_binding (symbol
)
1010 Lisp_Object valcontents
, cdr
;
1012 valcontents
= SYMBOL_VALUE (symbol
);
1013 if (!BUFFER_LOCAL_VALUEP (valcontents
)
1014 && !SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1016 cdr
= XBUFFER_LOCAL_VALUE (valcontents
)->cdr
;
1018 /* Unload the previously loaded binding. */
1019 Fsetcdr (XCAR (cdr
),
1020 do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
));
1022 /* Select the global binding in the symbol. */
1024 store_symval_forwarding (symbol
, valcontents
, XCDR (cdr
), NULL
);
1026 /* Indicate that the global binding is set up now. */
1027 XBUFFER_LOCAL_VALUE (valcontents
)->frame
= Qnil
;
1028 XBUFFER_LOCAL_VALUE (valcontents
)->buffer
= Qnil
;
1029 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
= 0;
1030 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 0;
1033 /* Set up the buffer-local symbol SYMBOL for validity in the current buffer.
1034 VALCONTENTS is the contents of its value cell,
1035 which points to a struct Lisp_Buffer_Local_Value.
1037 Return the value forwarded one step past the buffer-local stage.
1038 This could be another forwarding pointer. */
1041 swap_in_symval_forwarding (symbol
, valcontents
)
1042 Lisp_Object symbol
, valcontents
;
1044 register Lisp_Object tem1
;
1046 tem1
= XBUFFER_LOCAL_VALUE (valcontents
)->buffer
;
1049 || current_buffer
!= XBUFFER (tem1
)
1050 || (XBUFFER_LOCAL_VALUE (valcontents
)->check_frame
1051 && ! EQ (selected_frame
, XBUFFER_LOCAL_VALUE (valcontents
)->frame
)))
1053 if (XSYMBOL (symbol
)->indirect_variable
)
1054 symbol
= indirect_variable (symbol
);
1056 /* Unload the previously loaded binding. */
1057 tem1
= XCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1059 do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
));
1060 /* Choose the new binding. */
1061 tem1
= assq_no_quit (symbol
, current_buffer
->local_var_alist
);
1062 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
= 0;
1063 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 0;
1066 if (XBUFFER_LOCAL_VALUE (valcontents
)->check_frame
)
1067 tem1
= assq_no_quit (symbol
, XFRAME (selected_frame
)->param_alist
);
1069 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
= 1;
1071 tem1
= XBUFFER_LOCAL_VALUE (valcontents
)->cdr
;
1074 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 1;
1076 /* Load the new binding. */
1077 XSETCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
, tem1
);
1078 XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents
)->buffer
, current_buffer
);
1079 XBUFFER_LOCAL_VALUE (valcontents
)->frame
= selected_frame
;
1080 store_symval_forwarding (symbol
,
1081 XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
,
1084 return XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
;
1087 /* Find the value of a symbol, returning Qunbound if it's not bound.
1088 This is helpful for code which just wants to get a variable's value
1089 if it has one, without signaling an error.
1090 Note that it must not be possible to quit
1091 within this function. Great care is required for this. */
1094 find_symbol_value (symbol
)
1097 register Lisp_Object valcontents
;
1098 register Lisp_Object val
;
1100 CHECK_SYMBOL (symbol
);
1101 valcontents
= SYMBOL_VALUE (symbol
);
1103 if (BUFFER_LOCAL_VALUEP (valcontents
)
1104 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1105 valcontents
= swap_in_symval_forwarding (symbol
, valcontents
);
1107 if (MISCP (valcontents
))
1109 switch (XMISCTYPE (valcontents
))
1111 case Lisp_Misc_Intfwd
:
1112 XSETINT (val
, *XINTFWD (valcontents
)->intvar
);
1115 case Lisp_Misc_Boolfwd
:
1116 return (*XBOOLFWD (valcontents
)->boolvar
? Qt
: Qnil
);
1118 case Lisp_Misc_Objfwd
:
1119 return *XOBJFWD (valcontents
)->objvar
;
1121 case Lisp_Misc_Buffer_Objfwd
:
1122 return PER_BUFFER_VALUE (current_buffer
,
1123 XBUFFER_OBJFWD (valcontents
)->offset
);
1125 case Lisp_Misc_Kboard_Objfwd
:
1126 return *(Lisp_Object
*)(XKBOARD_OBJFWD (valcontents
)->offset
1127 + (char *)current_kboard
);
1134 DEFUN ("symbol-value", Fsymbol_value
, Ssymbol_value
, 1, 1, 0,
1135 doc
: /* Return SYMBOL's value. Error if that is void. */)
1141 val
= find_symbol_value (symbol
);
1142 if (EQ (val
, Qunbound
))
1143 return Fsignal (Qvoid_variable
, Fcons (symbol
, Qnil
));
1148 DEFUN ("set", Fset
, Sset
, 2, 2, 0,
1149 doc
: /* Set SYMBOL's value to NEWVAL, and return NEWVAL. */)
1151 register Lisp_Object symbol
, newval
;
1153 return set_internal (symbol
, newval
, current_buffer
, 0);
1156 /* Return 1 if SYMBOL currently has a let-binding
1157 which was made in the buffer that is now current. */
1160 let_shadows_buffer_binding_p (symbol
)
1163 volatile struct specbinding
*p
;
1165 for (p
= specpdl_ptr
- 1; p
>= specpdl
; p
--)
1167 && CONSP (p
->symbol
))
1169 Lisp_Object let_bound_symbol
= XCAR (p
->symbol
);
1170 if ((EQ (symbol
, let_bound_symbol
)
1171 || (XSYMBOL (let_bound_symbol
)->indirect_variable
1172 && EQ (symbol
, indirect_variable (let_bound_symbol
))))
1173 && XBUFFER (XCDR (XCDR (p
->symbol
))) == current_buffer
)
1177 return p
>= specpdl
;
1180 /* Store the value NEWVAL into SYMBOL.
1181 If buffer-locality is an issue, BUF specifies which buffer to use.
1182 (0 stands for the current buffer.)
1184 If BINDFLAG is zero, then if this symbol is supposed to become
1185 local in every buffer where it is set, then we make it local.
1186 If BINDFLAG is nonzero, we don't do that. */
1189 set_internal (symbol
, newval
, buf
, bindflag
)
1190 register Lisp_Object symbol
, newval
;
1194 int voide
= EQ (newval
, Qunbound
);
1196 register Lisp_Object valcontents
, innercontents
, tem1
, current_alist_element
;
1199 buf
= current_buffer
;
1201 /* If restoring in a dead buffer, do nothing. */
1202 if (NILP (buf
->name
))
1205 CHECK_SYMBOL (symbol
);
1206 if (SYMBOL_CONSTANT_P (symbol
)
1207 && (NILP (Fkeywordp (symbol
))
1208 || !EQ (newval
, SYMBOL_VALUE (symbol
))))
1209 return Fsignal (Qsetting_constant
, Fcons (symbol
, Qnil
));
1211 innercontents
= valcontents
= SYMBOL_VALUE (symbol
);
1213 if (BUFFER_OBJFWDP (valcontents
))
1215 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
1216 int idx
= PER_BUFFER_IDX (offset
);
1219 && !let_shadows_buffer_binding_p (symbol
))
1220 SET_PER_BUFFER_VALUE_P (buf
, idx
, 1);
1222 else if (BUFFER_LOCAL_VALUEP (valcontents
)
1223 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1225 /* valcontents is a struct Lisp_Buffer_Local_Value. */
1226 if (XSYMBOL (symbol
)->indirect_variable
)
1227 symbol
= indirect_variable (symbol
);
1229 /* What binding is loaded right now? */
1230 current_alist_element
1231 = XCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1233 /* If the current buffer is not the buffer whose binding is
1234 loaded, or if there may be frame-local bindings and the frame
1235 isn't the right one, or if it's a Lisp_Buffer_Local_Value and
1236 the default binding is loaded, the loaded binding may be the
1238 if (!BUFFERP (XBUFFER_LOCAL_VALUE (valcontents
)->buffer
)
1239 || buf
!= XBUFFER (XBUFFER_LOCAL_VALUE (valcontents
)->buffer
)
1240 || (XBUFFER_LOCAL_VALUE (valcontents
)->check_frame
1241 && !EQ (selected_frame
, XBUFFER_LOCAL_VALUE (valcontents
)->frame
))
1242 || (BUFFER_LOCAL_VALUEP (valcontents
)
1243 && EQ (XCAR (current_alist_element
),
1244 current_alist_element
)))
1246 /* The currently loaded binding is not necessarily valid.
1247 We need to unload it, and choose a new binding. */
1249 /* Write out `realvalue' to the old loaded binding. */
1250 Fsetcdr (current_alist_element
,
1251 do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
));
1253 /* Find the new binding. */
1254 tem1
= Fassq (symbol
, buf
->local_var_alist
);
1255 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 1;
1256 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
= 0;
1260 /* This buffer still sees the default value. */
1262 /* If the variable is a Lisp_Some_Buffer_Local_Value,
1263 or if this is `let' rather than `set',
1264 make CURRENT-ALIST-ELEMENT point to itself,
1265 indicating that we're seeing the default value.
1266 Likewise if the variable has been let-bound
1267 in the current buffer. */
1268 if (bindflag
|| SOME_BUFFER_LOCAL_VALUEP (valcontents
)
1269 || let_shadows_buffer_binding_p (symbol
))
1271 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 0;
1273 if (XBUFFER_LOCAL_VALUE (valcontents
)->check_frame
)
1274 tem1
= Fassq (symbol
,
1275 XFRAME (selected_frame
)->param_alist
);
1278 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
= 1;
1280 tem1
= XBUFFER_LOCAL_VALUE (valcontents
)->cdr
;
1282 /* If it's a Lisp_Buffer_Local_Value, being set not bound,
1283 and we're not within a let that was made for this buffer,
1284 create a new buffer-local binding for the variable.
1285 That means, give this buffer a new assoc for a local value
1286 and load that binding. */
1289 tem1
= Fcons (symbol
, XCDR (current_alist_element
));
1290 buf
->local_var_alist
1291 = Fcons (tem1
, buf
->local_var_alist
);
1295 /* Record which binding is now loaded. */
1296 XSETCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
,
1299 /* Set `buffer' and `frame' slots for thebinding now loaded. */
1300 XSETBUFFER (XBUFFER_LOCAL_VALUE (valcontents
)->buffer
, buf
);
1301 XBUFFER_LOCAL_VALUE (valcontents
)->frame
= selected_frame
;
1303 innercontents
= XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
;
1306 /* If storing void (making the symbol void), forward only through
1307 buffer-local indicator, not through Lisp_Objfwd, etc. */
1309 store_symval_forwarding (symbol
, Qnil
, newval
, buf
);
1311 store_symval_forwarding (symbol
, innercontents
, newval
, buf
);
1313 /* If we just set a variable whose current binding is frame-local,
1314 store the new value in the frame parameter too. */
1316 if (BUFFER_LOCAL_VALUEP (valcontents
)
1317 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1319 /* What binding is loaded right now? */
1320 current_alist_element
1321 = XCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1323 /* If the current buffer is not the buffer whose binding is
1324 loaded, or if there may be frame-local bindings and the frame
1325 isn't the right one, or if it's a Lisp_Buffer_Local_Value and
1326 the default binding is loaded, the loaded binding may be the
1328 if (XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
)
1329 XSETCDR (current_alist_element
, newval
);
1335 /* Access or set a buffer-local symbol's default value. */
1337 /* Return the default value of SYMBOL, but don't check for voidness.
1338 Return Qunbound if it is void. */
1341 default_value (symbol
)
1344 register Lisp_Object valcontents
;
1346 CHECK_SYMBOL (symbol
);
1347 valcontents
= SYMBOL_VALUE (symbol
);
1349 /* For a built-in buffer-local variable, get the default value
1350 rather than letting do_symval_forwarding get the current value. */
1351 if (BUFFER_OBJFWDP (valcontents
))
1353 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
1354 if (PER_BUFFER_IDX (offset
) != 0)
1355 return PER_BUFFER_DEFAULT (offset
);
1358 /* Handle user-created local variables. */
1359 if (BUFFER_LOCAL_VALUEP (valcontents
)
1360 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1362 /* If var is set up for a buffer that lacks a local value for it,
1363 the current value is nominally the default value.
1364 But the `realvalue' slot may be more up to date, since
1365 ordinary setq stores just that slot. So use that. */
1366 Lisp_Object current_alist_element
, alist_element_car
;
1367 current_alist_element
1368 = XCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1369 alist_element_car
= XCAR (current_alist_element
);
1370 if (EQ (alist_element_car
, current_alist_element
))
1371 return do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
);
1373 return XCDR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1375 /* For other variables, get the current value. */
1376 return do_symval_forwarding (valcontents
);
1379 DEFUN ("default-boundp", Fdefault_boundp
, Sdefault_boundp
, 1, 1, 0,
1380 doc
: /* Return t if SYMBOL has a non-void default value.
1381 This is the value that is seen in buffers that do not have their own values
1382 for this variable. */)
1386 register Lisp_Object value
;
1388 value
= default_value (symbol
);
1389 return (EQ (value
, Qunbound
) ? Qnil
: Qt
);
1392 DEFUN ("default-value", Fdefault_value
, Sdefault_value
, 1, 1, 0,
1393 doc
: /* Return SYMBOL's default value.
1394 This is the value that is seen in buffers that do not have their own values
1395 for this variable. The default value is meaningful for variables with
1396 local bindings in certain buffers. */)
1400 register Lisp_Object value
;
1402 value
= default_value (symbol
);
1403 if (EQ (value
, Qunbound
))
1404 return Fsignal (Qvoid_variable
, Fcons (symbol
, Qnil
));
1408 DEFUN ("set-default", Fset_default
, Sset_default
, 2, 2, 0,
1409 doc
: /* Set SYMBOL's default value to VALUE. SYMBOL and VALUE are evaluated.
1410 The default value is seen in buffers that do not have their own values
1411 for this variable. */)
1413 Lisp_Object symbol
, value
;
1415 register Lisp_Object valcontents
, current_alist_element
, alist_element_buffer
;
1417 CHECK_SYMBOL (symbol
);
1418 valcontents
= SYMBOL_VALUE (symbol
);
1420 /* Handle variables like case-fold-search that have special slots
1421 in the buffer. Make them work apparently like Lisp_Buffer_Local_Value
1423 if (BUFFER_OBJFWDP (valcontents
))
1425 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
1426 int idx
= PER_BUFFER_IDX (offset
);
1428 PER_BUFFER_DEFAULT (offset
) = value
;
1430 /* If this variable is not always local in all buffers,
1431 set it in the buffers that don't nominally have a local value. */
1436 for (b
= all_buffers
; b
; b
= b
->next
)
1437 if (!PER_BUFFER_VALUE_P (b
, idx
))
1438 PER_BUFFER_VALUE (b
, offset
) = value
;
1443 if (!BUFFER_LOCAL_VALUEP (valcontents
)
1444 && !SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1445 return Fset (symbol
, value
);
1447 /* Store new value into the DEFAULT-VALUE slot. */
1448 XSETCDR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
, value
);
1450 /* If the default binding is now loaded, set the REALVALUE slot too. */
1451 current_alist_element
1452 = XCAR (XBUFFER_LOCAL_VALUE (valcontents
)->cdr
);
1453 alist_element_buffer
= Fcar (current_alist_element
);
1454 if (EQ (alist_element_buffer
, current_alist_element
))
1455 store_symval_forwarding (symbol
,
1456 XBUFFER_LOCAL_VALUE (valcontents
)->realvalue
,
1462 DEFUN ("setq-default", Fsetq_default
, Ssetq_default
, 0, UNEVALLED
, 0,
1463 doc
: /* Set the default value of variable VAR to VALUE.
1464 VAR, the variable name, is literal (not evaluated);
1465 VALUE is an expression: it is evaluated and its value returned.
1466 The default value of a variable is seen in buffers
1467 that do not have their own values for the variable.
1469 More generally, you can use multiple variables and values, as in
1470 (setq-default VAR VALUE VAR VALUE...)
1471 This sets each VAR's default value to the corresponding VALUE.
1472 The VALUE for the Nth VAR can refer to the new default values
1474 usage: (setq-default [VAR VALUE...]) */)
1478 register Lisp_Object args_left
;
1479 register Lisp_Object val
, symbol
;
1480 struct gcpro gcpro1
;
1490 val
= Feval (Fcar (Fcdr (args_left
)));
1491 symbol
= XCAR (args_left
);
1492 Fset_default (symbol
, val
);
1493 args_left
= Fcdr (XCDR (args_left
));
1495 while (!NILP (args_left
));
1501 /* Lisp functions for creating and removing buffer-local variables. */
1503 DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local
, Smake_variable_buffer_local
,
1504 1, 1, "vMake Variable Buffer Local: ",
1505 doc
: /* Make VARIABLE become buffer-local whenever it is set.
1506 At any time, the value for the current buffer is in effect,
1507 unless the variable has never been set in this buffer,
1508 in which case the default value is in effect.
1509 Note that binding the variable with `let', or setting it while
1510 a `let'-style binding made in this buffer is in effect,
1511 does not make the variable buffer-local. Return VARIABLE.
1513 In most cases it is better to use `make-local-variable',
1514 which makes a variable local in just one buffer.
1516 The function `default-value' gets the default value and `set-default' sets it. */)
1518 register Lisp_Object variable
;
1520 register Lisp_Object tem
, valcontents
, newval
;
1522 CHECK_SYMBOL (variable
);
1523 variable
= indirect_variable (variable
);
1525 valcontents
= SYMBOL_VALUE (variable
);
1526 if (EQ (variable
, Qnil
) || EQ (variable
, Qt
) || KBOARD_OBJFWDP (valcontents
))
1527 error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME (variable
)));
1529 if (BUFFER_LOCAL_VALUEP (valcontents
) || BUFFER_OBJFWDP (valcontents
))
1531 if (SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1533 XMISCTYPE (SYMBOL_VALUE (variable
)) = Lisp_Misc_Buffer_Local_Value
;
1536 if (EQ (valcontents
, Qunbound
))
1537 SET_SYMBOL_VALUE (variable
, Qnil
);
1538 tem
= Fcons (Qnil
, Fsymbol_value (variable
));
1540 newval
= allocate_misc ();
1541 XMISCTYPE (newval
) = Lisp_Misc_Buffer_Local_Value
;
1542 XBUFFER_LOCAL_VALUE (newval
)->realvalue
= SYMBOL_VALUE (variable
);
1543 XBUFFER_LOCAL_VALUE (newval
)->buffer
= Fcurrent_buffer ();
1544 XBUFFER_LOCAL_VALUE (newval
)->frame
= Qnil
;
1545 XBUFFER_LOCAL_VALUE (newval
)->found_for_buffer
= 0;
1546 XBUFFER_LOCAL_VALUE (newval
)->found_for_frame
= 0;
1547 XBUFFER_LOCAL_VALUE (newval
)->check_frame
= 0;
1548 XBUFFER_LOCAL_VALUE (newval
)->cdr
= tem
;
1549 SET_SYMBOL_VALUE (variable
, newval
);
1553 DEFUN ("make-local-variable", Fmake_local_variable
, Smake_local_variable
,
1554 1, 1, "vMake Local Variable: ",
1555 doc
: /* Make VARIABLE have a separate value in the current buffer.
1556 Other buffers will continue to share a common default value.
1557 \(The buffer-local value of VARIABLE starts out as the same value
1558 VARIABLE previously had. If VARIABLE was void, it remains void.\)
1561 If the variable is already arranged to become local when set,
1562 this function causes a local value to exist for this buffer,
1563 just as setting the variable would do.
1565 This function returns VARIABLE, and therefore
1566 (set (make-local-variable 'VARIABLE) VALUE-EXP)
1569 See also `make-variable-buffer-local'.
1571 Do not use `make-local-variable' to make a hook variable buffer-local.
1572 Instead, use `add-hook' and specify t for the LOCAL argument. */)
1574 register Lisp_Object variable
;
1576 register Lisp_Object tem
, valcontents
;
1578 CHECK_SYMBOL (variable
);
1579 variable
= indirect_variable (variable
);
1581 valcontents
= SYMBOL_VALUE (variable
);
1582 if (EQ (variable
, Qnil
) || EQ (variable
, Qt
) || KBOARD_OBJFWDP (valcontents
))
1583 error ("Symbol %s may not be buffer-local", SDATA (SYMBOL_NAME (variable
)));
1585 if (BUFFER_LOCAL_VALUEP (valcontents
) || BUFFER_OBJFWDP (valcontents
))
1587 tem
= Fboundp (variable
);
1589 /* Make sure the symbol has a local value in this particular buffer,
1590 by setting it to the same value it already has. */
1591 Fset (variable
, (EQ (tem
, Qt
) ? Fsymbol_value (variable
) : Qunbound
));
1594 /* Make sure symbol is set up to hold per-buffer values. */
1595 if (!SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1598 tem
= Fcons (Qnil
, do_symval_forwarding (valcontents
));
1600 newval
= allocate_misc ();
1601 XMISCTYPE (newval
) = Lisp_Misc_Some_Buffer_Local_Value
;
1602 XBUFFER_LOCAL_VALUE (newval
)->realvalue
= SYMBOL_VALUE (variable
);
1603 XBUFFER_LOCAL_VALUE (newval
)->buffer
= Qnil
;
1604 XBUFFER_LOCAL_VALUE (newval
)->frame
= Qnil
;
1605 XBUFFER_LOCAL_VALUE (newval
)->found_for_buffer
= 0;
1606 XBUFFER_LOCAL_VALUE (newval
)->found_for_frame
= 0;
1607 XBUFFER_LOCAL_VALUE (newval
)->check_frame
= 0;
1608 XBUFFER_LOCAL_VALUE (newval
)->cdr
= tem
;
1609 SET_SYMBOL_VALUE (variable
, newval
);;
1611 /* Make sure this buffer has its own value of symbol. */
1612 tem
= Fassq (variable
, current_buffer
->local_var_alist
);
1615 /* Swap out any local binding for some other buffer, and make
1616 sure the current value is permanently recorded, if it's the
1618 find_symbol_value (variable
);
1620 current_buffer
->local_var_alist
1621 = Fcons (Fcons (variable
, XCDR (XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (variable
))->cdr
)),
1622 current_buffer
->local_var_alist
);
1624 /* Make sure symbol does not think it is set up for this buffer;
1625 force it to look once again for this buffer's value. */
1627 Lisp_Object
*pvalbuf
;
1629 valcontents
= SYMBOL_VALUE (variable
);
1631 pvalbuf
= &XBUFFER_LOCAL_VALUE (valcontents
)->buffer
;
1632 if (current_buffer
== XBUFFER (*pvalbuf
))
1634 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 0;
1638 /* If the symbol forwards into a C variable, then load the binding
1639 for this buffer now. If C code modifies the variable before we
1640 load the binding in, then that new value will clobber the default
1641 binding the next time we unload it. */
1642 valcontents
= XBUFFER_LOCAL_VALUE (SYMBOL_VALUE (variable
))->realvalue
;
1643 if (INTFWDP (valcontents
) || BOOLFWDP (valcontents
) || OBJFWDP (valcontents
))
1644 swap_in_symval_forwarding (variable
, SYMBOL_VALUE (variable
));
1649 DEFUN ("kill-local-variable", Fkill_local_variable
, Skill_local_variable
,
1650 1, 1, "vKill Local Variable: ",
1651 doc
: /* Make VARIABLE no longer have a separate value in the current buffer.
1652 From now on the default value will apply in this buffer. Return VARIABLE. */)
1654 register Lisp_Object variable
;
1656 register Lisp_Object tem
, valcontents
;
1658 CHECK_SYMBOL (variable
);
1659 variable
= indirect_variable (variable
);
1661 valcontents
= SYMBOL_VALUE (variable
);
1663 if (BUFFER_OBJFWDP (valcontents
))
1665 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
1666 int idx
= PER_BUFFER_IDX (offset
);
1670 SET_PER_BUFFER_VALUE_P (current_buffer
, idx
, 0);
1671 PER_BUFFER_VALUE (current_buffer
, offset
)
1672 = PER_BUFFER_DEFAULT (offset
);
1677 if (!BUFFER_LOCAL_VALUEP (valcontents
)
1678 && !SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1681 /* Get rid of this buffer's alist element, if any. */
1683 tem
= Fassq (variable
, current_buffer
->local_var_alist
);
1685 current_buffer
->local_var_alist
1686 = Fdelq (tem
, current_buffer
->local_var_alist
);
1688 /* If the symbol is set up with the current buffer's binding
1689 loaded, recompute its value. We have to do it now, or else
1690 forwarded objects won't work right. */
1692 Lisp_Object
*pvalbuf
, buf
;
1693 valcontents
= SYMBOL_VALUE (variable
);
1694 pvalbuf
= &XBUFFER_LOCAL_VALUE (valcontents
)->buffer
;
1695 XSETBUFFER (buf
, current_buffer
);
1696 if (EQ (buf
, *pvalbuf
))
1699 XBUFFER_LOCAL_VALUE (valcontents
)->found_for_buffer
= 0;
1700 find_symbol_value (variable
);
1707 /* Lisp functions for creating and removing buffer-local variables. */
1709 DEFUN ("make-variable-frame-local", Fmake_variable_frame_local
, Smake_variable_frame_local
,
1710 1, 1, "vMake Variable Frame Local: ",
1711 doc
: /* Enable VARIABLE to have frame-local bindings.
1712 When a frame-local binding exists in the current frame,
1713 it is in effect whenever the current buffer has no buffer-local binding.
1714 A frame-local binding is actually a frame parameter value;
1715 thus, any given frame has a local binding for VARIABLE if it has
1716 a value for the frame parameter named VARIABLE. Return VARIABLE.
1717 See `modify-frame-parameters' for how to set frame parameters. */)
1719 register Lisp_Object variable
;
1721 register Lisp_Object tem
, valcontents
, newval
;
1723 CHECK_SYMBOL (variable
);
1724 variable
= indirect_variable (variable
);
1726 valcontents
= SYMBOL_VALUE (variable
);
1727 if (EQ (variable
, Qnil
) || EQ (variable
, Qt
) || KBOARD_OBJFWDP (valcontents
)
1728 || BUFFER_OBJFWDP (valcontents
))
1729 error ("Symbol %s may not be frame-local", SDATA (SYMBOL_NAME (variable
)));
1731 if (BUFFER_LOCAL_VALUEP (valcontents
)
1732 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1734 XBUFFER_LOCAL_VALUE (valcontents
)->check_frame
= 1;
1738 if (EQ (valcontents
, Qunbound
))
1739 SET_SYMBOL_VALUE (variable
, Qnil
);
1740 tem
= Fcons (Qnil
, Fsymbol_value (variable
));
1742 newval
= allocate_misc ();
1743 XMISCTYPE (newval
) = Lisp_Misc_Some_Buffer_Local_Value
;
1744 XBUFFER_LOCAL_VALUE (newval
)->realvalue
= SYMBOL_VALUE (variable
);
1745 XBUFFER_LOCAL_VALUE (newval
)->buffer
= Qnil
;
1746 XBUFFER_LOCAL_VALUE (newval
)->frame
= Qnil
;
1747 XBUFFER_LOCAL_VALUE (newval
)->found_for_buffer
= 0;
1748 XBUFFER_LOCAL_VALUE (newval
)->found_for_frame
= 0;
1749 XBUFFER_LOCAL_VALUE (newval
)->check_frame
= 1;
1750 XBUFFER_LOCAL_VALUE (newval
)->cdr
= tem
;
1751 SET_SYMBOL_VALUE (variable
, newval
);
1755 DEFUN ("local-variable-p", Flocal_variable_p
, Slocal_variable_p
,
1757 doc
: /* Non-nil if VARIABLE has a local binding in buffer BUFFER.
1758 BUFFER defaults to the current buffer. */)
1760 register Lisp_Object variable
, buffer
;
1762 Lisp_Object valcontents
;
1763 register struct buffer
*buf
;
1766 buf
= current_buffer
;
1769 CHECK_BUFFER (buffer
);
1770 buf
= XBUFFER (buffer
);
1773 CHECK_SYMBOL (variable
);
1774 variable
= indirect_variable (variable
);
1776 valcontents
= SYMBOL_VALUE (variable
);
1777 if (BUFFER_LOCAL_VALUEP (valcontents
)
1778 || SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1780 Lisp_Object tail
, elt
;
1782 for (tail
= buf
->local_var_alist
; CONSP (tail
); tail
= XCDR (tail
))
1785 if (EQ (variable
, XCAR (elt
)))
1789 if (BUFFER_OBJFWDP (valcontents
))
1791 int offset
= XBUFFER_OBJFWD (valcontents
)->offset
;
1792 int idx
= PER_BUFFER_IDX (offset
);
1793 if (idx
== -1 || PER_BUFFER_VALUE_P (buf
, idx
))
1799 DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p
, Slocal_variable_if_set_p
,
1801 doc
: /* Non-nil if VARIABLE will be local in buffer BUFFER when set there.
1802 More precisely, this means that setting the variable \(with `set' or`setq'),
1803 while it does not have a `let'-style binding that was made in BUFFER,
1804 will produce a buffer local binding. See Info node
1805 `(elisp)Creating Buffer-Local'.
1806 BUFFER defaults to the current buffer. */)
1808 register Lisp_Object variable
, buffer
;
1810 Lisp_Object valcontents
;
1811 register struct buffer
*buf
;
1814 buf
= current_buffer
;
1817 CHECK_BUFFER (buffer
);
1818 buf
= XBUFFER (buffer
);
1821 CHECK_SYMBOL (variable
);
1822 variable
= indirect_variable (variable
);
1824 valcontents
= SYMBOL_VALUE (variable
);
1826 /* This means that make-variable-buffer-local was done. */
1827 if (BUFFER_LOCAL_VALUEP (valcontents
))
1829 /* All these slots become local if they are set. */
1830 if (BUFFER_OBJFWDP (valcontents
))
1832 if (SOME_BUFFER_LOCAL_VALUEP (valcontents
))
1834 Lisp_Object tail
, elt
;
1835 for (tail
= buf
->local_var_alist
; CONSP (tail
); tail
= XCDR (tail
))
1838 if (EQ (variable
, XCAR (elt
)))
1845 DEFUN ("variable-binding-locus", Fvariable_binding_locus
, Svariable_binding_locus
,
1847 doc
: /* Return a value indicating where VARIABLE's current binding comes from.
1848 If the current binding is buffer-local, the value is the current buffer.
1849 If the current binding is frame-local, the value is the selected frame.
1850 If the current binding is global (the default), the value is nil. */)
1852 register Lisp_Object variable
;
1854 Lisp_Object valcontents
;
1856 CHECK_SYMBOL (variable
);
1857 variable
= indirect_variable (variable
);
1859 /* Make sure the current binding is actually swapped in. */
1860 find_symbol_value (variable
);
1862 valcontents
= XSYMBOL (variable
)->value
;
1864 if (BUFFER_LOCAL_VALUEP (valcontents
)
1865 || SOME_BUFFER_LOCAL_VALUEP (valcontents
)
1866 || BUFFER_OBJFWDP (valcontents
))
1868 /* For a local variable, record both the symbol and which
1869 buffer's or frame's value we are saving. */
1870 if (!NILP (Flocal_variable_p (variable
, Qnil
)))
1871 return Fcurrent_buffer ();
1872 else if (!BUFFER_OBJFWDP (valcontents
)
1873 && XBUFFER_LOCAL_VALUE (valcontents
)->found_for_frame
)
1874 return XBUFFER_LOCAL_VALUE (valcontents
)->frame
;
1880 /* Find the function at the end of a chain of symbol function indirections. */
1882 /* If OBJECT is a symbol, find the end of its function chain and
1883 return the value found there. If OBJECT is not a symbol, just
1884 return it. If there is a cycle in the function chain, signal a
1885 cyclic-function-indirection error.
1887 This is like Findirect_function, except that it doesn't signal an
1888 error if the chain ends up unbound. */
1890 indirect_function (object
)
1891 register Lisp_Object object
;
1893 Lisp_Object tortoise
, hare
;
1895 hare
= tortoise
= object
;
1899 if (!SYMBOLP (hare
) || EQ (hare
, Qunbound
))
1901 hare
= XSYMBOL (hare
)->function
;
1902 if (!SYMBOLP (hare
) || EQ (hare
, Qunbound
))
1904 hare
= XSYMBOL (hare
)->function
;
1906 tortoise
= XSYMBOL (tortoise
)->function
;
1908 if (EQ (hare
, tortoise
))
1909 Fsignal (Qcyclic_function_indirection
, Fcons (object
, Qnil
));
1915 DEFUN ("indirect-function", Findirect_function
, Sindirect_function
, 1, 1, 0,
1916 doc
: /* Return the function at the end of OBJECT's function chain.
1917 If OBJECT is a symbol, follow all function indirections and return the final
1919 If OBJECT is not a symbol, just return it.
1920 Signal a void-function error if the final symbol is unbound.
1921 Signal a cyclic-function-indirection error if there is a loop in the
1922 function chain of symbols. */)
1924 register Lisp_Object object
;
1928 result
= indirect_function (object
);
1930 if (EQ (result
, Qunbound
))
1931 return Fsignal (Qvoid_function
, Fcons (object
, Qnil
));
1935 /* Extract and set vector and string elements */
1937 DEFUN ("aref", Faref
, Saref
, 2, 2, 0,
1938 doc
: /* Return the element of ARRAY at index IDX.
1939 ARRAY may be a vector, a string, a char-table, a bool-vector,
1940 or a byte-code object. IDX starts at 0. */)
1942 register Lisp_Object array
;
1945 register int idxval
;
1948 idxval
= XINT (idx
);
1949 if (STRINGP (array
))
1953 if (idxval
< 0 || idxval
>= SCHARS (array
))
1954 args_out_of_range (array
, idx
);
1955 if (! STRING_MULTIBYTE (array
))
1956 return make_number ((unsigned char) SREF (array
, idxval
));
1957 idxval_byte
= string_char_to_byte (array
, idxval
);
1959 c
= STRING_CHAR (SDATA (array
) + idxval_byte
,
1960 SBYTES (array
) - idxval_byte
);
1961 return make_number (c
);
1963 else if (BOOL_VECTOR_P (array
))
1967 if (idxval
< 0 || idxval
>= XBOOL_VECTOR (array
)->size
)
1968 args_out_of_range (array
, idx
);
1970 val
= (unsigned char) XBOOL_VECTOR (array
)->data
[idxval
/ BOOL_VECTOR_BITS_PER_CHAR
];
1971 return (val
& (1 << (idxval
% BOOL_VECTOR_BITS_PER_CHAR
)) ? Qt
: Qnil
);
1973 else if (CHAR_TABLE_P (array
))
1980 args_out_of_range (array
, idx
);
1981 if (idxval
< CHAR_TABLE_ORDINARY_SLOTS
)
1983 if (! SINGLE_BYTE_CHAR_P (idxval
))
1984 args_out_of_range (array
, idx
);
1985 /* For ASCII and 8-bit European characters, the element is
1986 stored in the top table. */
1987 val
= XCHAR_TABLE (array
)->contents
[idxval
];
1991 = (idxval
< 0x80 ? CHAR_TABLE_DEFAULT_SLOT_ASCII
1992 : idxval
< 0xA0 ? CHAR_TABLE_DEFAULT_SLOT_8_BIT_CONTROL
1993 : CHAR_TABLE_DEFAULT_SLOT_8_BIT_GRAPHIC
);
1994 val
= XCHAR_TABLE (array
)->contents
[default_slot
];
1997 val
= XCHAR_TABLE (array
)->defalt
;
1998 while (NILP (val
)) /* Follow parents until we find some value. */
2000 array
= XCHAR_TABLE (array
)->parent
;
2003 val
= XCHAR_TABLE (array
)->contents
[idxval
];
2005 val
= XCHAR_TABLE (array
)->defalt
;
2012 Lisp_Object sub_table
;
2013 Lisp_Object current_default
;
2015 SPLIT_CHAR (idxval
, code
[0], code
[1], code
[2]);
2016 if (code
[1] < 32) code
[1] = -1;
2017 else if (code
[2] < 32) code
[2] = -1;
2019 /* Here, the possible range of CODE[0] (== charset ID) is
2020 128..MAX_CHARSET. Since the top level char table contains
2021 data for multibyte characters after 256th element, we must
2022 increment CODE[0] by 128 to get a correct index. */
2024 code
[3] = -1; /* anchor */
2026 try_parent_char_table
:
2027 current_default
= XCHAR_TABLE (array
)->defalt
;
2029 for (i
= 0; code
[i
] >= 0; i
++)
2031 val
= XCHAR_TABLE (sub_table
)->contents
[code
[i
]];
2032 if (SUB_CHAR_TABLE_P (val
))
2035 if (! NILP (XCHAR_TABLE (sub_table
)->defalt
))
2036 current_default
= XCHAR_TABLE (sub_table
)->defalt
;
2041 val
= current_default
;
2044 array
= XCHAR_TABLE (array
)->parent
;
2046 goto try_parent_char_table
;
2051 /* Reaching here means IDXVAL is a generic character in
2052 which each character or a group has independent value.
2053 Essentially it's nonsense to get a value for such a
2054 generic character, but for backward compatibility, we try
2055 the default value and parent. */
2056 val
= current_default
;
2059 array
= XCHAR_TABLE (array
)->parent
;
2061 goto try_parent_char_table
;
2069 if (VECTORP (array
))
2070 size
= XVECTOR (array
)->size
;
2071 else if (COMPILEDP (array
))
2072 size
= XVECTOR (array
)->size
& PSEUDOVECTOR_SIZE_MASK
;
2074 wrong_type_argument (Qarrayp
, array
);
2076 if (idxval
< 0 || idxval
>= size
)
2077 args_out_of_range (array
, idx
);
2078 return XVECTOR (array
)->contents
[idxval
];
2082 DEFUN ("aset", Faset
, Saset
, 3, 3, 0,
2083 doc
: /* Store into the element of ARRAY at index IDX the value NEWELT.
2084 Return NEWELT. ARRAY may be a vector, a string, a char-table or a
2085 bool-vector. IDX starts at 0. */)
2086 (array
, idx
, newelt
)
2087 register Lisp_Object array
;
2088 Lisp_Object idx
, newelt
;
2090 register int idxval
;
2093 idxval
= XINT (idx
);
2094 if (!VECTORP (array
) && !STRINGP (array
) && !BOOL_VECTOR_P (array
)
2095 && ! CHAR_TABLE_P (array
))
2096 array
= wrong_type_argument (Qarrayp
, array
);
2097 CHECK_IMPURE (array
);
2099 if (VECTORP (array
))
2101 if (idxval
< 0 || idxval
>= XVECTOR (array
)->size
)
2102 args_out_of_range (array
, idx
);
2103 XVECTOR (array
)->contents
[idxval
] = newelt
;
2105 else if (BOOL_VECTOR_P (array
))
2109 if (idxval
< 0 || idxval
>= XBOOL_VECTOR (array
)->size
)
2110 args_out_of_range (array
, idx
);
2112 val
= (unsigned char) XBOOL_VECTOR (array
)->data
[idxval
/ BOOL_VECTOR_BITS_PER_CHAR
];
2114 if (! NILP (newelt
))
2115 val
|= 1 << (idxval
% BOOL_VECTOR_BITS_PER_CHAR
);
2117 val
&= ~(1 << (idxval
% BOOL_VECTOR_BITS_PER_CHAR
));
2118 XBOOL_VECTOR (array
)->data
[idxval
/ BOOL_VECTOR_BITS_PER_CHAR
] = val
;
2120 else if (CHAR_TABLE_P (array
))
2123 args_out_of_range (array
, idx
);
2124 if (idxval
< CHAR_TABLE_ORDINARY_SLOTS
)
2126 if (! SINGLE_BYTE_CHAR_P (idxval
))
2127 args_out_of_range (array
, idx
);
2128 XCHAR_TABLE (array
)->contents
[idxval
] = newelt
;
2135 SPLIT_CHAR (idxval
, code
[0], code
[1], code
[2]);
2136 if (code
[1] < 32) code
[1] = -1;
2137 else if (code
[2] < 32) code
[2] = -1;
2139 /* See the comment of the corresponding part in Faref. */
2141 code
[3] = -1; /* anchor */
2142 for (i
= 0; code
[i
+ 1] >= 0; i
++)
2144 val
= XCHAR_TABLE (array
)->contents
[code
[i
]];
2145 if (SUB_CHAR_TABLE_P (val
))
2151 /* VAL is a leaf. Create a sub char table with the
2152 initial value VAL and look into it. */
2154 temp
= make_sub_char_table (val
);
2155 XCHAR_TABLE (array
)->contents
[code
[i
]] = temp
;
2159 XCHAR_TABLE (array
)->contents
[code
[i
]] = newelt
;
2162 else if (STRING_MULTIBYTE (array
))
2164 int idxval_byte
, prev_bytes
, new_bytes
, nbytes
;
2165 unsigned char workbuf
[MAX_MULTIBYTE_LENGTH
], *p0
= workbuf
, *p1
;
2167 if (idxval
< 0 || idxval
>= SCHARS (array
))
2168 args_out_of_range (array
, idx
);
2169 CHECK_NUMBER (newelt
);
2171 nbytes
= SBYTES (array
);
2173 idxval_byte
= string_char_to_byte (array
, idxval
);
2174 p1
= SDATA (array
) + idxval_byte
;
2175 PARSE_MULTIBYTE_SEQ (p1
, nbytes
- idxval_byte
, prev_bytes
);
2176 new_bytes
= CHAR_STRING (XINT (newelt
), p0
);
2177 if (prev_bytes
!= new_bytes
)
2179 /* We must relocate the string data. */
2180 int nchars
= SCHARS (array
);
2184 SAFE_ALLOCA (str
, unsigned char *, nbytes
);
2185 bcopy (SDATA (array
), str
, nbytes
);
2186 allocate_string_data (XSTRING (array
), nchars
,
2187 nbytes
+ new_bytes
- prev_bytes
);
2188 bcopy (str
, SDATA (array
), idxval_byte
);
2189 p1
= SDATA (array
) + idxval_byte
;
2190 bcopy (str
+ idxval_byte
+ prev_bytes
, p1
+ new_bytes
,
2191 nbytes
- (idxval_byte
+ prev_bytes
));
2193 clear_string_char_byte_cache ();
2200 if (idxval
< 0 || idxval
>= SCHARS (array
))
2201 args_out_of_range (array
, idx
);
2202 CHECK_NUMBER (newelt
);
2204 if (XINT (newelt
) < 0 || SINGLE_BYTE_CHAR_P (XINT (newelt
)))
2205 SSET (array
, idxval
, XINT (newelt
));
2208 /* We must relocate the string data while converting it to
2210 int idxval_byte
, prev_bytes
, new_bytes
;
2211 unsigned char workbuf
[MAX_MULTIBYTE_LENGTH
], *p0
= workbuf
, *p1
;
2212 unsigned char *origstr
= SDATA (array
), *str
;
2216 nchars
= SCHARS (array
);
2217 nbytes
= idxval_byte
= count_size_as_multibyte (origstr
, idxval
);
2218 nbytes
+= count_size_as_multibyte (origstr
+ idxval
,
2220 SAFE_ALLOCA (str
, unsigned char *, nbytes
);
2221 copy_text (SDATA (array
), str
, nchars
, 0, 1);
2222 PARSE_MULTIBYTE_SEQ (str
+ idxval_byte
, nbytes
- idxval_byte
,
2224 new_bytes
= CHAR_STRING (XINT (newelt
), p0
);
2225 allocate_string_data (XSTRING (array
), nchars
,
2226 nbytes
+ new_bytes
- prev_bytes
);
2227 bcopy (str
, SDATA (array
), idxval_byte
);
2228 p1
= SDATA (array
) + idxval_byte
;
2231 bcopy (str
+ idxval_byte
+ prev_bytes
, p1
,
2232 nbytes
- (idxval_byte
+ prev_bytes
));
2234 clear_string_char_byte_cache ();
2241 /* Arithmetic functions */
2243 enum comparison
{ equal
, notequal
, less
, grtr
, less_or_equal
, grtr_or_equal
};
2246 arithcompare (num1
, num2
, comparison
)
2247 Lisp_Object num1
, num2
;
2248 enum comparison comparison
;
2250 double f1
= 0, f2
= 0;
2253 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1
);
2254 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2
);
2256 if (FLOATP (num1
) || FLOATP (num2
))
2259 f1
= (FLOATP (num1
)) ? XFLOAT_DATA (num1
) : XINT (num1
);
2260 f2
= (FLOATP (num2
)) ? XFLOAT_DATA (num2
) : XINT (num2
);
2266 if (floatp
? f1
== f2
: XINT (num1
) == XINT (num2
))
2271 if (floatp
? f1
!= f2
: XINT (num1
) != XINT (num2
))
2276 if (floatp
? f1
< f2
: XINT (num1
) < XINT (num2
))
2281 if (floatp
? f1
<= f2
: XINT (num1
) <= XINT (num2
))
2286 if (floatp
? f1
> f2
: XINT (num1
) > XINT (num2
))
2291 if (floatp
? f1
>= f2
: XINT (num1
) >= XINT (num2
))
2300 DEFUN ("=", Feqlsign
, Seqlsign
, 2, 2, 0,
2301 doc
: /* Return t if two args, both numbers or markers, are equal. */)
2303 register Lisp_Object num1
, num2
;
2305 return arithcompare (num1
, num2
, equal
);
2308 DEFUN ("<", Flss
, Slss
, 2, 2, 0,
2309 doc
: /* Return t if first arg is less than second arg. Both must be numbers or markers. */)
2311 register Lisp_Object num1
, num2
;
2313 return arithcompare (num1
, num2
, less
);
2316 DEFUN (">", Fgtr
, Sgtr
, 2, 2, 0,
2317 doc
: /* Return t if first arg is greater than second arg. Both must be numbers or markers. */)
2319 register Lisp_Object num1
, num2
;
2321 return arithcompare (num1
, num2
, grtr
);
2324 DEFUN ("<=", Fleq
, Sleq
, 2, 2, 0,
2325 doc
: /* Return t if first arg is less than or equal to second arg.
2326 Both must be numbers or markers. */)
2328 register Lisp_Object num1
, num2
;
2330 return arithcompare (num1
, num2
, less_or_equal
);
2333 DEFUN (">=", Fgeq
, Sgeq
, 2, 2, 0,
2334 doc
: /* Return t if first arg is greater than or equal to second arg.
2335 Both must be numbers or markers. */)
2337 register Lisp_Object num1
, num2
;
2339 return arithcompare (num1
, num2
, grtr_or_equal
);
2342 DEFUN ("/=", Fneq
, Sneq
, 2, 2, 0,
2343 doc
: /* Return t if first arg is not equal to second arg. Both must be numbers or markers. */)
2345 register Lisp_Object num1
, num2
;
2347 return arithcompare (num1
, num2
, notequal
);
2350 DEFUN ("zerop", Fzerop
, Szerop
, 1, 1, 0,
2351 doc
: /* Return t if NUMBER is zero. */)
2353 register Lisp_Object number
;
2355 CHECK_NUMBER_OR_FLOAT (number
);
2357 if (FLOATP (number
))
2359 if (XFLOAT_DATA (number
) == 0.0)
2369 /* Convert between long values and pairs of Lisp integers. */
2375 unsigned long top
= i
>> 16;
2376 unsigned int bot
= i
& 0xFFFF;
2378 return make_number (bot
);
2379 if (top
== (unsigned long)-1 >> 16)
2380 return Fcons (make_number (-1), make_number (bot
));
2381 return Fcons (make_number (top
), make_number (bot
));
2388 Lisp_Object top
, bot
;
2395 return ((XINT (top
) << 16) | XINT (bot
));
2398 DEFUN ("number-to-string", Fnumber_to_string
, Snumber_to_string
, 1, 1, 0,
2399 doc
: /* Return the decimal representation of NUMBER as a string.
2400 Uses a minus sign if negative.
2401 NUMBER may be an integer or a floating point number. */)
2405 char buffer
[VALBITS
];
2407 CHECK_NUMBER_OR_FLOAT (number
);
2409 if (FLOATP (number
))
2411 char pigbuf
[350]; /* see comments in float_to_string */
2413 float_to_string (pigbuf
, XFLOAT_DATA (number
));
2414 return build_string (pigbuf
);
2417 if (sizeof (int) == sizeof (EMACS_INT
))
2418 sprintf (buffer
, "%d", XINT (number
));
2419 else if (sizeof (long) == sizeof (EMACS_INT
))
2420 sprintf (buffer
, "%ld", (long) XINT (number
));
2423 return build_string (buffer
);
2427 digit_to_number (character
, base
)
2428 int character
, base
;
2432 if (character
>= '0' && character
<= '9')
2433 digit
= character
- '0';
2434 else if (character
>= 'a' && character
<= 'z')
2435 digit
= character
- 'a' + 10;
2436 else if (character
>= 'A' && character
<= 'Z')
2437 digit
= character
- 'A' + 10;
2447 DEFUN ("string-to-number", Fstring_to_number
, Sstring_to_number
, 1, 2, 0,
2448 doc
: /* Parse STRING as a decimal number and return the number.
2449 This parses both integers and floating point numbers.
2450 It ignores leading spaces and tabs.
2452 If BASE, interpret STRING as a number in that base. If BASE isn't
2453 present, base 10 is used. BASE must be between 2 and 16 (inclusive).
2454 If the base used is not 10, floating point is not recognized. */)
2456 register Lisp_Object string
, base
;
2458 register unsigned char *p
;
2463 CHECK_STRING (string
);
2469 CHECK_NUMBER (base
);
2471 if (b
< 2 || b
> 16)
2472 Fsignal (Qargs_out_of_range
, Fcons (base
, Qnil
));
2475 /* Skip any whitespace at the front of the number. Some versions of
2476 atoi do this anyway, so we might as well make Emacs lisp consistent. */
2478 while (*p
== ' ' || *p
== '\t')
2489 if (isfloat_string (p
) && b
== 10)
2490 val
= make_float (sign
* atof (p
));
2497 int digit
= digit_to_number (*p
++, b
);
2503 val
= make_fixnum_or_float (sign
* v
);
2523 static Lisp_Object float_arith_driver
P_ ((double, int, enum arithop
,
2524 int, Lisp_Object
*));
2525 extern Lisp_Object
fmod_float ();
2528 arith_driver (code
, nargs
, args
)
2531 register Lisp_Object
*args
;
2533 register Lisp_Object val
;
2534 register int argnum
;
2535 register EMACS_INT accum
= 0;
2536 register EMACS_INT next
;
2538 switch (SWITCH_ENUM_CAST (code
))
2556 for (argnum
= 0; argnum
< nargs
; argnum
++)
2558 /* Using args[argnum] as argument to CHECK_NUMBER_... */
2560 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val
);
2563 return float_arith_driver ((double) accum
, argnum
, code
,
2566 next
= XINT (args
[argnum
]);
2567 switch (SWITCH_ENUM_CAST (code
))
2573 accum
= argnum
? accum
- next
: nargs
== 1 ? - next
: next
;
2584 Fsignal (Qarith_error
, Qnil
);
2598 if (!argnum
|| next
> accum
)
2602 if (!argnum
|| next
< accum
)
2608 XSETINT (val
, accum
);
2613 #define isnan(x) ((x) != (x))
2616 float_arith_driver (accum
, argnum
, code
, nargs
, args
)
2618 register int argnum
;
2621 register Lisp_Object
*args
;
2623 register Lisp_Object val
;
2626 for (; argnum
< nargs
; argnum
++)
2628 val
= args
[argnum
]; /* using args[argnum] as argument to CHECK_NUMBER_... */
2629 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val
);
2633 next
= XFLOAT_DATA (val
);
2637 args
[argnum
] = val
; /* runs into a compiler bug. */
2638 next
= XINT (args
[argnum
]);
2640 switch (SWITCH_ENUM_CAST (code
))
2646 accum
= argnum
? accum
- next
: nargs
== 1 ? - next
: next
;
2656 if (! IEEE_FLOATING_POINT
&& next
== 0)
2657 Fsignal (Qarith_error
, Qnil
);
2664 return wrong_type_argument (Qinteger_or_marker_p
, val
);
2666 if (!argnum
|| isnan (next
) || next
> accum
)
2670 if (!argnum
|| isnan (next
) || next
< accum
)
2676 return make_float (accum
);
2680 DEFUN ("+", Fplus
, Splus
, 0, MANY
, 0,
2681 doc
: /* Return sum of any number of arguments, which are numbers or markers.
2682 usage: (+ &rest NUMBERS-OR-MARKERS) */)
2687 return arith_driver (Aadd
, nargs
, args
);
2690 DEFUN ("-", Fminus
, Sminus
, 0, MANY
, 0,
2691 doc
: /* Negate number or subtract numbers or markers and return the result.
2692 With one arg, negates it. With more than one arg,
2693 subtracts all but the first from the first.
2694 usage: (- &optional NUMBER-OR-MARKER &rest MORE-NUMBERS-OR-MARKERS) */)
2699 return arith_driver (Asub
, nargs
, args
);
2702 DEFUN ("*", Ftimes
, Stimes
, 0, MANY
, 0,
2703 doc
: /* Return product of any number of arguments, which are numbers or markers.
2704 usage: (* &rest NUMBERS-OR-MARKERS) */)
2709 return arith_driver (Amult
, nargs
, args
);
2712 DEFUN ("/", Fquo
, Squo
, 2, MANY
, 0,
2713 doc
: /* Return first argument divided by all the remaining arguments.
2714 The arguments must be numbers or markers.
2715 usage: (/ DIVIDEND DIVISOR &rest DIVISORS) */)
2721 for (argnum
= 2; argnum
< nargs
; argnum
++)
2722 if (FLOATP (args
[argnum
]))
2723 return float_arith_driver (0, 0, Adiv
, nargs
, args
);
2724 return arith_driver (Adiv
, nargs
, args
);
2727 DEFUN ("%", Frem
, Srem
, 2, 2, 0,
2728 doc
: /* Return remainder of X divided by Y.
2729 Both must be integers or markers. */)
2731 register Lisp_Object x
, y
;
2735 CHECK_NUMBER_COERCE_MARKER (x
);
2736 CHECK_NUMBER_COERCE_MARKER (y
);
2738 if (XFASTINT (y
) == 0)
2739 Fsignal (Qarith_error
, Qnil
);
2741 XSETINT (val
, XINT (x
) % XINT (y
));
2755 /* If the magnitude of the result exceeds that of the divisor, or
2756 the sign of the result does not agree with that of the dividend,
2757 iterate with the reduced value. This does not yield a
2758 particularly accurate result, but at least it will be in the
2759 range promised by fmod. */
2761 r
-= f2
* floor (r
/ f2
);
2762 while (f2
<= (r
< 0 ? -r
: r
) || ((r
< 0) != (f1
< 0) && ! isnan (r
)));
2766 #endif /* ! HAVE_FMOD */
2768 DEFUN ("mod", Fmod
, Smod
, 2, 2, 0,
2769 doc
: /* Return X modulo Y.
2770 The result falls between zero (inclusive) and Y (exclusive).
2771 Both X and Y must be numbers or markers. */)
2773 register Lisp_Object x
, y
;
2778 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x
);
2779 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y
);
2781 if (FLOATP (x
) || FLOATP (y
))
2782 return fmod_float (x
, y
);
2788 Fsignal (Qarith_error
, Qnil
);
2792 /* If the "remainder" comes out with the wrong sign, fix it. */
2793 if (i2
< 0 ? i1
> 0 : i1
< 0)
2800 DEFUN ("max", Fmax
, Smax
, 1, MANY
, 0,
2801 doc
: /* Return largest of all the arguments (which must be numbers or markers).
2802 The value is always a number; markers are converted to numbers.
2803 usage: (max NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */)
2808 return arith_driver (Amax
, nargs
, args
);
2811 DEFUN ("min", Fmin
, Smin
, 1, MANY
, 0,
2812 doc
: /* Return smallest of all the arguments (which must be numbers or markers).
2813 The value is always a number; markers are converted to numbers.
2814 usage: (min NUMBER-OR-MARKER &rest NUMBERS-OR-MARKERS) */)
2819 return arith_driver (Amin
, nargs
, args
);
2822 DEFUN ("logand", Flogand
, Slogand
, 0, MANY
, 0,
2823 doc
: /* Return bitwise-and of all the arguments.
2824 Arguments may be integers, or markers converted to integers.
2825 usage: (logand &rest INTS-OR-MARKERS) */)
2830 return arith_driver (Alogand
, nargs
, args
);
2833 DEFUN ("logior", Flogior
, Slogior
, 0, MANY
, 0,
2834 doc
: /* Return bitwise-or of all the arguments.
2835 Arguments may be integers, or markers converted to integers.
2836 usage: (logior &rest INTS-OR-MARKERS) */)
2841 return arith_driver (Alogior
, nargs
, args
);
2844 DEFUN ("logxor", Flogxor
, Slogxor
, 0, MANY
, 0,
2845 doc
: /* Return bitwise-exclusive-or of all the arguments.
2846 Arguments may be integers, or markers converted to integers.
2847 usage: (logxor &rest INTS-OR-MARKERS) */)
2852 return arith_driver (Alogxor
, nargs
, args
);
2855 DEFUN ("ash", Fash
, Sash
, 2, 2, 0,
2856 doc
: /* Return VALUE with its bits shifted left by COUNT.
2857 If COUNT is negative, shifting is actually to the right.
2858 In this case, the sign bit is duplicated. */)
2860 register Lisp_Object value
, count
;
2862 register Lisp_Object val
;
2864 CHECK_NUMBER (value
);
2865 CHECK_NUMBER (count
);
2867 if (XINT (count
) >= BITS_PER_EMACS_INT
)
2869 else if (XINT (count
) > 0)
2870 XSETINT (val
, XINT (value
) << XFASTINT (count
));
2871 else if (XINT (count
) <= -BITS_PER_EMACS_INT
)
2872 XSETINT (val
, XINT (value
) < 0 ? -1 : 0);
2874 XSETINT (val
, XINT (value
) >> -XINT (count
));
2878 DEFUN ("lsh", Flsh
, Slsh
, 2, 2, 0,
2879 doc
: /* Return VALUE with its bits shifted left by COUNT.
2880 If COUNT is negative, shifting is actually to the right.
2881 In this case, zeros are shifted in on the left. */)
2883 register Lisp_Object value
, count
;
2885 register Lisp_Object val
;
2887 CHECK_NUMBER (value
);
2888 CHECK_NUMBER (count
);
2890 if (XINT (count
) >= BITS_PER_EMACS_INT
)
2892 else if (XINT (count
) > 0)
2893 XSETINT (val
, (EMACS_UINT
) XUINT (value
) << XFASTINT (count
));
2894 else if (XINT (count
) <= -BITS_PER_EMACS_INT
)
2897 XSETINT (val
, (EMACS_UINT
) XUINT (value
) >> -XINT (count
));
2901 DEFUN ("1+", Fadd1
, Sadd1
, 1, 1, 0,
2902 doc
: /* Return NUMBER plus one. NUMBER may be a number or a marker.
2903 Markers are converted to integers. */)
2905 register Lisp_Object number
;
2907 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number
);
2909 if (FLOATP (number
))
2910 return (make_float (1.0 + XFLOAT_DATA (number
)));
2912 XSETINT (number
, XINT (number
) + 1);
2916 DEFUN ("1-", Fsub1
, Ssub1
, 1, 1, 0,
2917 doc
: /* Return NUMBER minus one. NUMBER may be a number or a marker.
2918 Markers are converted to integers. */)
2920 register Lisp_Object number
;
2922 CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number
);
2924 if (FLOATP (number
))
2925 return (make_float (-1.0 + XFLOAT_DATA (number
)));
2927 XSETINT (number
, XINT (number
) - 1);
2931 DEFUN ("lognot", Flognot
, Slognot
, 1, 1, 0,
2932 doc
: /* Return the bitwise complement of NUMBER. NUMBER must be an integer. */)
2934 register Lisp_Object number
;
2936 CHECK_NUMBER (number
);
2937 XSETINT (number
, ~XINT (number
));
2941 DEFUN ("byteorder", Fbyteorder
, Sbyteorder
, 0, 0, 0,
2942 doc
: /* Return the byteorder for the machine.
2943 Returns 66 (ASCII uppercase B) for big endian machines or 108 (ASCII
2944 lowercase l) for small endian machines. */)
2947 unsigned i
= 0x04030201;
2948 int order
= *(char *)&i
== 1 ? 108 : 66;
2950 return make_number (order
);
2958 Lisp_Object error_tail
, arith_tail
;
2960 Qquote
= intern ("quote");
2961 Qlambda
= intern ("lambda");
2962 Qsubr
= intern ("subr");
2963 Qerror_conditions
= intern ("error-conditions");
2964 Qerror_message
= intern ("error-message");
2965 Qtop_level
= intern ("top-level");
2967 Qerror
= intern ("error");
2968 Qquit
= intern ("quit");
2969 Qwrong_type_argument
= intern ("wrong-type-argument");
2970 Qargs_out_of_range
= intern ("args-out-of-range");
2971 Qvoid_function
= intern ("void-function");
2972 Qcyclic_function_indirection
= intern ("cyclic-function-indirection");
2973 Qcyclic_variable_indirection
= intern ("cyclic-variable-indirection");
2974 Qvoid_variable
= intern ("void-variable");
2975 Qsetting_constant
= intern ("setting-constant");
2976 Qinvalid_read_syntax
= intern ("invalid-read-syntax");
2978 Qinvalid_function
= intern ("invalid-function");
2979 Qwrong_number_of_arguments
= intern ("wrong-number-of-arguments");
2980 Qno_catch
= intern ("no-catch");
2981 Qend_of_file
= intern ("end-of-file");
2982 Qarith_error
= intern ("arith-error");
2983 Qbeginning_of_buffer
= intern ("beginning-of-buffer");
2984 Qend_of_buffer
= intern ("end-of-buffer");
2985 Qbuffer_read_only
= intern ("buffer-read-only");
2986 Qtext_read_only
= intern ("text-read-only");
2987 Qmark_inactive
= intern ("mark-inactive");
2989 Qlistp
= intern ("listp");
2990 Qconsp
= intern ("consp");
2991 Qsymbolp
= intern ("symbolp");
2992 Qkeywordp
= intern ("keywordp");
2993 Qintegerp
= intern ("integerp");
2994 Qnatnump
= intern ("natnump");
2995 Qwholenump
= intern ("wholenump");
2996 Qstringp
= intern ("stringp");
2997 Qarrayp
= intern ("arrayp");
2998 Qsequencep
= intern ("sequencep");
2999 Qbufferp
= intern ("bufferp");
3000 Qvectorp
= intern ("vectorp");
3001 Qchar_or_string_p
= intern ("char-or-string-p");
3002 Qmarkerp
= intern ("markerp");
3003 Qbuffer_or_string_p
= intern ("buffer-or-string-p");
3004 Qinteger_or_marker_p
= intern ("integer-or-marker-p");
3005 Qboundp
= intern ("boundp");
3006 Qfboundp
= intern ("fboundp");
3008 Qfloatp
= intern ("floatp");
3009 Qnumberp
= intern ("numberp");
3010 Qnumber_or_marker_p
= intern ("number-or-marker-p");
3012 Qchar_table_p
= intern ("char-table-p");
3013 Qvector_or_char_table_p
= intern ("vector-or-char-table-p");
3015 Qsubrp
= intern ("subrp");
3016 Qunevalled
= intern ("unevalled");
3017 Qmany
= intern ("many");
3019 Qcdr
= intern ("cdr");
3021 /* Handle automatic advice activation */
3022 Qad_advice_info
= intern ("ad-advice-info");
3023 Qad_activate_internal
= intern ("ad-activate-internal");
3025 error_tail
= Fcons (Qerror
, Qnil
);
3027 /* ERROR is used as a signaler for random errors for which nothing else is right */
3029 Fput (Qerror
, Qerror_conditions
,
3031 Fput (Qerror
, Qerror_message
,
3032 build_string ("error"));
3034 Fput (Qquit
, Qerror_conditions
,
3035 Fcons (Qquit
, Qnil
));
3036 Fput (Qquit
, Qerror_message
,
3037 build_string ("Quit"));
3039 Fput (Qwrong_type_argument
, Qerror_conditions
,
3040 Fcons (Qwrong_type_argument
, error_tail
));
3041 Fput (Qwrong_type_argument
, Qerror_message
,
3042 build_string ("Wrong type argument"));
3044 Fput (Qargs_out_of_range
, Qerror_conditions
,
3045 Fcons (Qargs_out_of_range
, error_tail
));
3046 Fput (Qargs_out_of_range
, Qerror_message
,
3047 build_string ("Args out of range"));
3049 Fput (Qvoid_function
, Qerror_conditions
,
3050 Fcons (Qvoid_function
, error_tail
));
3051 Fput (Qvoid_function
, Qerror_message
,
3052 build_string ("Symbol's function definition is void"));
3054 Fput (Qcyclic_function_indirection
, Qerror_conditions
,
3055 Fcons (Qcyclic_function_indirection
, error_tail
));
3056 Fput (Qcyclic_function_indirection
, Qerror_message
,
3057 build_string ("Symbol's chain of function indirections contains a loop"));
3059 Fput (Qcyclic_variable_indirection
, Qerror_conditions
,
3060 Fcons (Qcyclic_variable_indirection
, error_tail
));
3061 Fput (Qcyclic_variable_indirection
, Qerror_message
,
3062 build_string ("Symbol's chain of variable indirections contains a loop"));
3064 Qcircular_list
= intern ("circular-list");
3065 staticpro (&Qcircular_list
);
3066 Fput (Qcircular_list
, Qerror_conditions
,
3067 Fcons (Qcircular_list
, error_tail
));
3068 Fput (Qcircular_list
, Qerror_message
,
3069 build_string ("List contains a loop"));
3071 Fput (Qvoid_variable
, Qerror_conditions
,
3072 Fcons (Qvoid_variable
, error_tail
));
3073 Fput (Qvoid_variable
, Qerror_message
,
3074 build_string ("Symbol's value as variable is void"));
3076 Fput (Qsetting_constant
, Qerror_conditions
,
3077 Fcons (Qsetting_constant
, error_tail
));
3078 Fput (Qsetting_constant
, Qerror_message
,
3079 build_string ("Attempt to set a constant symbol"));
3081 Fput (Qinvalid_read_syntax
, Qerror_conditions
,
3082 Fcons (Qinvalid_read_syntax
, error_tail
));
3083 Fput (Qinvalid_read_syntax
, Qerror_message
,
3084 build_string ("Invalid read syntax"));
3086 Fput (Qinvalid_function
, Qerror_conditions
,
3087 Fcons (Qinvalid_function
, error_tail
));
3088 Fput (Qinvalid_function
, Qerror_message
,
3089 build_string ("Invalid function"));
3091 Fput (Qwrong_number_of_arguments
, Qerror_conditions
,
3092 Fcons (Qwrong_number_of_arguments
, error_tail
));
3093 Fput (Qwrong_number_of_arguments
, Qerror_message
,
3094 build_string ("Wrong number of arguments"));
3096 Fput (Qno_catch
, Qerror_conditions
,
3097 Fcons (Qno_catch
, error_tail
));
3098 Fput (Qno_catch
, Qerror_message
,
3099 build_string ("No catch for tag"));
3101 Fput (Qend_of_file
, Qerror_conditions
,
3102 Fcons (Qend_of_file
, error_tail
));
3103 Fput (Qend_of_file
, Qerror_message
,
3104 build_string ("End of file during parsing"));
3106 arith_tail
= Fcons (Qarith_error
, error_tail
);
3107 Fput (Qarith_error
, Qerror_conditions
,
3109 Fput (Qarith_error
, Qerror_message
,
3110 build_string ("Arithmetic error"));
3112 Fput (Qbeginning_of_buffer
, Qerror_conditions
,
3113 Fcons (Qbeginning_of_buffer
, error_tail
));
3114 Fput (Qbeginning_of_buffer
, Qerror_message
,
3115 build_string ("Beginning of buffer"));
3117 Fput (Qend_of_buffer
, Qerror_conditions
,
3118 Fcons (Qend_of_buffer
, error_tail
));
3119 Fput (Qend_of_buffer
, Qerror_message
,
3120 build_string ("End of buffer"));
3122 Fput (Qbuffer_read_only
, Qerror_conditions
,
3123 Fcons (Qbuffer_read_only
, error_tail
));
3124 Fput (Qbuffer_read_only
, Qerror_message
,
3125 build_string ("Buffer is read-only"));
3127 Fput (Qtext_read_only
, Qerror_conditions
,
3128 Fcons (Qtext_read_only
, error_tail
));
3129 Fput (Qtext_read_only
, Qerror_message
,
3130 build_string ("Text is read-only"));
3132 Qrange_error
= intern ("range-error");
3133 Qdomain_error
= intern ("domain-error");
3134 Qsingularity_error
= intern ("singularity-error");
3135 Qoverflow_error
= intern ("overflow-error");
3136 Qunderflow_error
= intern ("underflow-error");
3138 Fput (Qdomain_error
, Qerror_conditions
,
3139 Fcons (Qdomain_error
, arith_tail
));
3140 Fput (Qdomain_error
, Qerror_message
,
3141 build_string ("Arithmetic domain error"));
3143 Fput (Qrange_error
, Qerror_conditions
,
3144 Fcons (Qrange_error
, arith_tail
));
3145 Fput (Qrange_error
, Qerror_message
,
3146 build_string ("Arithmetic range error"));
3148 Fput (Qsingularity_error
, Qerror_conditions
,
3149 Fcons (Qsingularity_error
, Fcons (Qdomain_error
, arith_tail
)));
3150 Fput (Qsingularity_error
, Qerror_message
,
3151 build_string ("Arithmetic singularity error"));
3153 Fput (Qoverflow_error
, Qerror_conditions
,
3154 Fcons (Qoverflow_error
, Fcons (Qdomain_error
, arith_tail
)));
3155 Fput (Qoverflow_error
, Qerror_message
,
3156 build_string ("Arithmetic overflow error"));
3158 Fput (Qunderflow_error
, Qerror_conditions
,
3159 Fcons (Qunderflow_error
, Fcons (Qdomain_error
, arith_tail
)));
3160 Fput (Qunderflow_error
, Qerror_message
,
3161 build_string ("Arithmetic underflow error"));
3163 staticpro (&Qrange_error
);
3164 staticpro (&Qdomain_error
);
3165 staticpro (&Qsingularity_error
);
3166 staticpro (&Qoverflow_error
);
3167 staticpro (&Qunderflow_error
);
3171 staticpro (&Qquote
);
3172 staticpro (&Qlambda
);
3174 staticpro (&Qunbound
);
3175 staticpro (&Qerror_conditions
);
3176 staticpro (&Qerror_message
);
3177 staticpro (&Qtop_level
);
3179 staticpro (&Qerror
);
3181 staticpro (&Qwrong_type_argument
);
3182 staticpro (&Qargs_out_of_range
);
3183 staticpro (&Qvoid_function
);
3184 staticpro (&Qcyclic_function_indirection
);
3185 staticpro (&Qcyclic_variable_indirection
);
3186 staticpro (&Qvoid_variable
);
3187 staticpro (&Qsetting_constant
);
3188 staticpro (&Qinvalid_read_syntax
);
3189 staticpro (&Qwrong_number_of_arguments
);
3190 staticpro (&Qinvalid_function
);
3191 staticpro (&Qno_catch
);
3192 staticpro (&Qend_of_file
);
3193 staticpro (&Qarith_error
);
3194 staticpro (&Qbeginning_of_buffer
);
3195 staticpro (&Qend_of_buffer
);
3196 staticpro (&Qbuffer_read_only
);
3197 staticpro (&Qtext_read_only
);
3198 staticpro (&Qmark_inactive
);
3200 staticpro (&Qlistp
);
3201 staticpro (&Qconsp
);
3202 staticpro (&Qsymbolp
);
3203 staticpro (&Qkeywordp
);
3204 staticpro (&Qintegerp
);
3205 staticpro (&Qnatnump
);
3206 staticpro (&Qwholenump
);
3207 staticpro (&Qstringp
);
3208 staticpro (&Qarrayp
);
3209 staticpro (&Qsequencep
);
3210 staticpro (&Qbufferp
);
3211 staticpro (&Qvectorp
);
3212 staticpro (&Qchar_or_string_p
);
3213 staticpro (&Qmarkerp
);
3214 staticpro (&Qbuffer_or_string_p
);
3215 staticpro (&Qinteger_or_marker_p
);
3216 staticpro (&Qfloatp
);
3217 staticpro (&Qnumberp
);
3218 staticpro (&Qnumber_or_marker_p
);
3219 staticpro (&Qchar_table_p
);
3220 staticpro (&Qvector_or_char_table_p
);
3221 staticpro (&Qsubrp
);
3223 staticpro (&Qunevalled
);
3225 staticpro (&Qboundp
);
3226 staticpro (&Qfboundp
);
3228 staticpro (&Qad_advice_info
);
3229 staticpro (&Qad_activate_internal
);
3231 /* Types that type-of returns. */
3232 Qinteger
= intern ("integer");
3233 Qsymbol
= intern ("symbol");
3234 Qstring
= intern ("string");
3235 Qcons
= intern ("cons");
3236 Qmarker
= intern ("marker");
3237 Qoverlay
= intern ("overlay");
3238 Qfloat
= intern ("float");
3239 Qwindow_configuration
= intern ("window-configuration");
3240 Qprocess
= intern ("process");
3241 Qwindow
= intern ("window");
3242 /* Qsubr = intern ("subr"); */
3243 Qcompiled_function
= intern ("compiled-function");
3244 Qbuffer
= intern ("buffer");
3245 Qframe
= intern ("frame");
3246 Qvector
= intern ("vector");
3247 Qchar_table
= intern ("char-table");
3248 Qbool_vector
= intern ("bool-vector");
3249 Qhash_table
= intern ("hash-table");
3251 staticpro (&Qinteger
);
3252 staticpro (&Qsymbol
);
3253 staticpro (&Qstring
);
3255 staticpro (&Qmarker
);
3256 staticpro (&Qoverlay
);
3257 staticpro (&Qfloat
);
3258 staticpro (&Qwindow_configuration
);
3259 staticpro (&Qprocess
);
3260 staticpro (&Qwindow
);
3261 /* staticpro (&Qsubr); */
3262 staticpro (&Qcompiled_function
);
3263 staticpro (&Qbuffer
);
3264 staticpro (&Qframe
);
3265 staticpro (&Qvector
);
3266 staticpro (&Qchar_table
);
3267 staticpro (&Qbool_vector
);
3268 staticpro (&Qhash_table
);
3270 defsubr (&Sindirect_variable
);
3271 defsubr (&Sinteractive_form
);
3274 defsubr (&Stype_of
);
3279 defsubr (&Sintegerp
);
3280 defsubr (&Sinteger_or_marker_p
);
3281 defsubr (&Snumberp
);
3282 defsubr (&Snumber_or_marker_p
);
3284 defsubr (&Snatnump
);
3285 defsubr (&Ssymbolp
);
3286 defsubr (&Skeywordp
);
3287 defsubr (&Sstringp
);
3288 defsubr (&Smultibyte_string_p
);
3289 defsubr (&Svectorp
);
3290 defsubr (&Schar_table_p
);
3291 defsubr (&Svector_or_char_table_p
);
3292 defsubr (&Sbool_vector_p
);
3294 defsubr (&Ssequencep
);
3295 defsubr (&Sbufferp
);
3296 defsubr (&Smarkerp
);
3298 defsubr (&Sbyte_code_function_p
);
3299 defsubr (&Schar_or_string_p
);
3302 defsubr (&Scar_safe
);
3303 defsubr (&Scdr_safe
);
3306 defsubr (&Ssymbol_function
);
3307 defsubr (&Sindirect_function
);
3308 defsubr (&Ssymbol_plist
);
3309 defsubr (&Ssymbol_name
);
3310 defsubr (&Smakunbound
);
3311 defsubr (&Sfmakunbound
);
3313 defsubr (&Sfboundp
);
3315 defsubr (&Sdefalias
);
3316 defsubr (&Ssetplist
);
3317 defsubr (&Ssymbol_value
);
3319 defsubr (&Sdefault_boundp
);
3320 defsubr (&Sdefault_value
);
3321 defsubr (&Sset_default
);
3322 defsubr (&Ssetq_default
);
3323 defsubr (&Smake_variable_buffer_local
);
3324 defsubr (&Smake_local_variable
);
3325 defsubr (&Skill_local_variable
);
3326 defsubr (&Smake_variable_frame_local
);
3327 defsubr (&Slocal_variable_p
);
3328 defsubr (&Slocal_variable_if_set_p
);
3329 defsubr (&Svariable_binding_locus
);
3332 defsubr (&Snumber_to_string
);
3333 defsubr (&Sstring_to_number
);
3334 defsubr (&Seqlsign
);
3357 defsubr (&Sbyteorder
);
3358 defsubr (&Ssubr_arity
);
3359 defsubr (&Ssubr_name
);
3361 XSYMBOL (Qwholenump
)->function
= XSYMBOL (Qnatnump
)->function
;
3363 DEFVAR_LISP ("most-positive-fixnum", &Vmost_positive_fixnum
,
3364 doc
: /* The largest value that is representable in a Lisp integer. */);
3365 Vmost_positive_fixnum
= make_number (MOST_POSITIVE_FIXNUM
);
3367 DEFVAR_LISP ("most-negative-fixnum", &Vmost_negative_fixnum
,
3368 doc
: /* The smallest value that is representable in a Lisp integer. */);
3369 Vmost_negative_fixnum
= make_number (MOST_NEGATIVE_FIXNUM
);
3376 #if defined(USG) && !defined(POSIX_SIGNALS)
3377 /* USG systems forget handlers when they are used;
3378 must reestablish each time */
3379 signal (signo
, arith_error
);
3382 /* VMS systems are like USG. */
3383 signal (signo
, arith_error
);
3387 #else /* not BSD4_1 */
3388 sigsetmask (SIGEMPTYMASK
);
3389 #endif /* not BSD4_1 */
3391 SIGNAL_THREAD_CHECK (signo
);
3392 Fsignal (Qarith_error
, Qnil
);
3398 /* Don't do this if just dumping out.
3399 We don't want to call `signal' in this case
3400 so that we don't have trouble with dumping
3401 signal-delivering routines in an inconsistent state. */
3405 #endif /* CANNOT_DUMP */
3406 signal (SIGFPE
, arith_error
);
3409 signal (SIGEMT
, arith_error
);
3413 /* arch-tag: 25879798-b84d-479a-9c89-7d148e2109f7
3414 (do not change this comment) */