1 /* Fundamental definitions for GNU Emacs Lisp interpreter.
3 Copyright (C) 1985-1987, 1993-1995, 1997-2013 Free Software Foundation,
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 3 of the License, or
11 (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>. */
37 # define LISP_INLINE INLINE
40 /* The ubiquitous max and min macros. */
43 #define max(a, b) ((a) > (b) ? (a) : (b))
44 #define min(a, b) ((a) < (b) ? (a) : (b))
46 /* EMACS_INT - signed integer wide enough to hold an Emacs value
47 EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if
48 pI - printf length modifier for EMACS_INT
49 EMACS_UINT - unsigned variant of EMACS_INT */
51 # if LONG_MAX < LLONG_MAX && defined WIDE_EMACS_INT
52 typedef long long int EMACS_INT
;
53 typedef unsigned long long int EMACS_UINT
;
54 # define EMACS_INT_MAX LLONG_MAX
56 # elif INT_MAX < LONG_MAX
57 typedef long int EMACS_INT
;
58 typedef unsigned long int EMACS_UINT
;
59 # define EMACS_INT_MAX LONG_MAX
62 typedef int EMACS_INT
;
63 typedef unsigned int EMACS_UINT
;
64 # define EMACS_INT_MAX INT_MAX
69 /* Number of bits in some machine integer types. */
72 BITS_PER_CHAR
= CHAR_BIT
,
73 BITS_PER_SHORT
= CHAR_BIT
* sizeof (short),
74 BITS_PER_INT
= CHAR_BIT
* sizeof (int),
75 BITS_PER_LONG
= CHAR_BIT
* sizeof (long int),
76 BITS_PER_EMACS_INT
= CHAR_BIT
* sizeof (EMACS_INT
)
79 /* printmax_t and uprintmax_t are types for printing large integers.
80 These are the widest integers that are supported for printing.
81 pMd etc. are conversions for printing them.
82 On C99 hosts, there's no problem, as even the widest integers work.
83 Fall back on EMACS_INT on pre-C99 hosts. */
85 typedef intmax_t printmax_t
;
86 typedef uintmax_t uprintmax_t
;
90 typedef EMACS_INT printmax_t
;
91 typedef EMACS_UINT uprintmax_t
;
96 /* Use pD to format ptrdiff_t values, which suffice for indexes into
97 buffers and strings. Emacs never allocates objects larger than
98 PTRDIFF_MAX bytes, as they cause problems with pointer subtraction.
99 In C99, pD can always be "t"; configure it here for the sake of
100 pre-C99 libraries such as glibc 2.0 and Solaris 8. */
101 #if PTRDIFF_MAX == INT_MAX
103 #elif PTRDIFF_MAX == LONG_MAX
105 #elif PTRDIFF_MAX == LLONG_MAX
111 /* Extra internal type checking? */
113 /* Define an Emacs version of 'assert (COND)', since some
114 system-defined 'assert's are flaky. COND should be free of side
115 effects; it may or may not be evaluated. */
116 #ifndef ENABLE_CHECKING
117 # define eassert(X) ((void) (0 && (X))) /* Check that X compiles. */
118 #else /* ENABLE_CHECKING */
120 extern _Noreturn
void die (const char *, const char *, int);
122 /* The suppress_checking variable is initialized to 0 in alloc.c. Set
123 it to 1 using a debugger to temporarily disable aborting on
124 detected internal inconsistencies or error conditions.
126 In some cases, a good compiler may be able to optimize away the
127 eassert macro altogether, e.g., if XSTRING (x) uses eassert to test
128 STRINGP (x), but a particular use of XSTRING is invoked only after
129 testing that STRINGP (x) is true, making the test redundant. */
130 extern bool suppress_checking EXTERNALLY_VISIBLE
;
132 # define eassert(cond) \
133 ((cond) || suppress_checking \
135 : die ("assertion failed: " # cond, __FILE__, __LINE__))
136 #endif /* ENABLE_CHECKING */
138 /* Use the configure flag --enable-check-lisp-object-type to make
139 Lisp_Object use a struct type instead of the default int. The flag
140 causes CHECK_LISP_OBJECT_TYPE to be defined. */
142 /***** Select the tagging scheme. *****/
143 /* The following option controls the tagging scheme:
144 - USE_LSB_TAG means that we can assume the least 3 bits of pointers are
145 always 0, and we can thus use them to hold tag bits, without
146 restricting our addressing space.
148 If ! USE_LSB_TAG, then use the top 3 bits for tagging, thus
149 restricting our possible address range.
151 USE_LSB_TAG not only requires the least 3 bits of pointers returned by
152 malloc to be 0 but also needs to be able to impose a mult-of-8 alignment
153 on the few static Lisp_Objects used: all the defsubr as well
154 as the two special buffers buffer_defaults and buffer_local_symbols. */
158 /* Number of bits in a Lisp_Object tag. This can be used in #if,
159 and for GDB's sake also as a regular symbol. */
164 /* 2**GCTYPEBITS. This must be a macro that expands to a literal
165 integer constant, for MSVC. */
166 #define GCALIGNMENT 8
168 /* Number of bits in a Lisp_Object value, not counting the tag. */
169 VALBITS
= BITS_PER_EMACS_INT
- GCTYPEBITS
,
171 /* Number of bits in a Lisp fixnum tag. */
172 INTTYPEBITS
= GCTYPEBITS
- 1,
174 /* Number of bits in a Lisp fixnum value, not counting the tag. */
175 FIXNUM_BITS
= VALBITS
+ 1
178 #if GCALIGNMENT != 1 << GCTYPEBITS
179 # error "GCALIGNMENT and GCTYPEBITS are inconsistent"
182 /* The maximum value that can be stored in a EMACS_INT, assuming all
183 bits other than the type bits contribute to a nonnegative signed value.
184 This can be used in #if, e.g., '#if VAL_MAX < UINTPTR_MAX' below. */
185 #define VAL_MAX (EMACS_INT_MAX >> (GCTYPEBITS - 1))
187 /* Unless otherwise specified, use USE_LSB_TAG on systems where: */
189 /* 1. We know malloc returns a multiple of 8. */
190 # if (defined GNU_MALLOC || defined DOUG_LEA_MALLOC || defined __GLIBC__ \
191 || defined DARWIN_OS || defined __sun)
192 /* 2. We can specify multiple-of-8 alignment on static variables. */
194 /* 3. Pointers-as-ints exceed VAL_MAX.
195 On hosts where pointers-as-ints do not exceed VAL_MAX, USE_LSB_TAG is:
196 a. unnecessary, because the top bits of an EMACS_INT are unused, and
197 b. slower, because it typically requires extra masking.
198 So, default USE_LSB_TAG to 1 only on hosts where it might be useful. */
199 # if VAL_MAX < UINTPTR_MAX
200 # define USE_LSB_TAG 1
207 enum enum_USE_LSB_TAG
{ USE_LSB_TAG
= 1 };
208 # define USE_LSB_TAG 1
210 enum enum_USE_LSB_TAG
{ USE_LSB_TAG
= 0 };
211 # define USE_LSB_TAG 0
215 # define alignas(alignment) /* empty */
217 # error "USE_LSB_TAG requires alignas"
222 /* Define the fundamental Lisp data structures. */
224 /* This is the set of Lisp data types. If you want to define a new
225 data type, read the comments after Lisp_Fwd_Type definition
228 /* Lisp integers use 2 tags, to give them one extra bit, thus
229 extending their range from, e.g., -2^28..2^28-1 to -2^29..2^29-1. */
230 static EMACS_INT
const INTMASK
= EMACS_INT_MAX
>> (INTTYPEBITS
- 1);
231 #define case_Lisp_Int case Lisp_Int0: case Lisp_Int1
232 #define LISP_INT_TAG_P(x) (((x) & ~Lisp_Int1) == 0)
234 /* Stolen from GDB. The only known compiler that doesn't support
235 enums in bitfields is MSVC. */
237 #define ENUM_BF(TYPE) unsigned int
239 #define ENUM_BF(TYPE) enum TYPE
245 /* Integer. XINT (obj) is the integer value. */
247 Lisp_Int1
= USE_LSB_TAG
? 1 << INTTYPEBITS
: 1,
249 /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */
252 /* Miscellaneous. XMISC (object) points to a union Lisp_Misc,
253 whose first member indicates the subtype. */
256 /* String. XSTRING (object) points to a struct Lisp_String.
257 The length of the string, and its contents, are stored therein. */
258 Lisp_String
= USE_LSB_TAG
? 1 : 1 << INTTYPEBITS
,
260 /* Vector of Lisp objects, or something resembling it.
261 XVECTOR (object) points to a struct Lisp_Vector, which contains
262 the size and contents. The size field also contains the type
263 information, if it's not a real vector object. */
266 /* Cons. XCONS (object) points to a struct Lisp_Cons. */
272 /* This is the set of data types that share a common structure.
273 The first member of the structure is a type code from this set.
274 The enum values are arbitrary, but we'll use large numbers to make it
275 more likely that we'll spot the error if a random word in memory is
276 mistakenly interpreted as a Lisp_Misc. */
279 Lisp_Misc_Free
= 0x5eab,
282 Lisp_Misc_Save_Value
,
283 /* Currently floats are not a misc type,
284 but let's define this in case we want to change that. */
286 /* This is not a type code. It is for range checking. */
290 /* These are the types of forwarding objects used in the value slot
291 of symbols for special built-in variables whose value is stored in
295 Lisp_Fwd_Int
, /* Fwd to a C `int' variable. */
296 Lisp_Fwd_Bool
, /* Fwd to a C boolean var. */
297 Lisp_Fwd_Obj
, /* Fwd to a C Lisp_Object variable. */
298 Lisp_Fwd_Buffer_Obj
, /* Fwd to a Lisp_Object field of buffers. */
299 Lisp_Fwd_Kboard_Obj
, /* Fwd to a Lisp_Object field of kboards. */
302 /* If you want to define a new Lisp data type, here are some
303 instructions. See the thread at
304 http://lists.gnu.org/archive/html/emacs-devel/2012-10/msg00561.html
307 First, there are already a couple of Lisp types that can be used if
308 your new type does not need to be exposed to Lisp programs nor
309 displayed to users. These are Lisp_Save_Value, a Lisp_Misc
310 subtype; and PVEC_OTHER, a kind of vectorlike object. The former
311 is suitable for temporarily stashing away pointers and integers in
312 a Lisp object (see the existing uses of make_save_value and
313 XSAVE_VALUE). The latter is useful for vector-like Lisp objects
314 that need to be used as part of other objects, but which are never
315 shown to users or Lisp code (search for PVEC_OTHER in xterm.c for
318 These two types don't look pretty when printed, so they are
319 unsuitable for Lisp objects that can be exposed to users.
321 To define a new data type, add one more Lisp_Misc subtype or one
322 more pseudovector subtype. Pseudovectors are more suitable for
323 objects with several slots that need to support fast random access,
324 while Lisp_Misc types are for everything else. A pseudovector object
325 provides one or more slots for Lisp objects, followed by struct
326 members that are accessible only from C. A Lisp_Misc object is a
327 wrapper for a C struct that can contain anything you like.
329 Explicit freeing is discouraged for Lisp objects in general. But if
330 you really need to exploit this, use Lisp_Misc (check free_misc in
331 alloc.c to see why). There is no way to free a vectorlike object.
333 To add a new pseudovector type, extend the pvec_type enumeration;
334 to add a new Lisp_Misc, extend the Lisp_Misc_Type enumeration.
336 For a Lisp_Misc, you will also need to add your entry to union
337 Lisp_Misc (but make sure the first word has the same structure as
338 the others, starting with a 16-bit member of the Lisp_Misc_Type
339 enumeration and a 1-bit GC markbit) and make sure the overall size
340 of the union is not increased by your addition.
342 For a new pseudovector, it's highly desirable to limit the size
343 of your data type by VBLOCK_BYTES_MAX bytes (defined in alloc.c).
344 Otherwise you will need to change sweep_vectors (also in alloc.c).
346 Then you will need to add switch branches in print.c (in
347 print_object, to print your object, and possibly also in
348 print_preprocess) and to alloc.c, to mark your object (in
349 mark_object) and to free it (in gc_sweep). The latter is also the
350 right place to call any code specific to your data type that needs
351 to run when the object is recycled -- e.g., free any additional
352 resources allocated for it that are not Lisp objects. You can even
353 make a pointer to the function that frees the resources a slot in
354 your object -- this way, the same object could be used to represent
355 several disparate C structures. */
357 #ifdef CHECK_LISP_OBJECT_TYPE
359 typedef struct { EMACS_INT i
; } Lisp_Object
;
362 LISP_INLINE Lisp_Object
365 Lisp_Object o
= { i
};
369 LISP_INLINE Lisp_Object
370 LISP_MAKE_RVALUE (Lisp_Object o
)
375 #define LISP_INITIALLY_ZERO {0}
377 #undef CHECK_LISP_OBJECT_TYPE
378 enum CHECK_LISP_OBJECT_TYPE
{ CHECK_LISP_OBJECT_TYPE
= 1 };
379 #else /* CHECK_LISP_OBJECT_TYPE */
381 /* If a struct type is not wanted, define Lisp_Object as just a number. */
383 typedef EMACS_INT Lisp_Object
;
386 #define LISP_MAKE_RVALUE(o) (0 + (o))
387 #define LISP_INITIALLY_ZERO 0
388 enum CHECK_LISP_OBJECT_TYPE
{ CHECK_LISP_OBJECT_TYPE
= 0 };
389 #endif /* CHECK_LISP_OBJECT_TYPE */
391 /* In the size word of a vector, this bit means the vector has been marked. */
393 static ptrdiff_t const ARRAY_MARK_FLAG
394 #define ARRAY_MARK_FLAG PTRDIFF_MIN
397 /* In the size word of a struct Lisp_Vector, this bit means it's really
398 some other vector-like object. */
399 static ptrdiff_t const PSEUDOVECTOR_FLAG
400 #define PSEUDOVECTOR_FLAG (PTRDIFF_MAX - PTRDIFF_MAX / 2)
403 /* In a pseudovector, the size field actually contains a word with one
404 PSEUDOVECTOR_FLAG bit set, and one of the following values extracted
405 with PVEC_TYPE_MASK to indicate the actual type. */
417 PVEC_WINDOW_CONFIGURATION
,
420 /* These should be last, check internal_equal to see why. */
424 PVEC_FONT
/* Should be last because it's used for range checking. */
427 /* DATA_SEG_BITS forces extra bits to be or'd in with any pointers
428 which were stored in a Lisp_Object. */
429 #ifndef DATA_SEG_BITS
430 # define DATA_SEG_BITS 0
432 enum { gdb_DATA_SEG_BITS
= DATA_SEG_BITS
};
437 DATA_SEG_BITS
= gdb_DATA_SEG_BITS
,
439 /* For convenience, we also store the number of elements in these bits.
440 Note that this size is not necessarily the memory-footprint size, but
441 only the number of Lisp_Object fields (that need to be traced by GC).
442 The distinction is used, e.g., by Lisp_Process, which places extra
443 non-Lisp_Object fields at the end of the structure. */
444 PSEUDOVECTOR_SIZE_BITS
= 12,
445 PSEUDOVECTOR_SIZE_MASK
= (1 << PSEUDOVECTOR_SIZE_BITS
) - 1,
447 /* To calculate the memory footprint of the pseudovector, it's useful
448 to store the size of non-Lisp area in word_size units here. */
449 PSEUDOVECTOR_REST_BITS
= 12,
450 PSEUDOVECTOR_REST_MASK
= (((1 << PSEUDOVECTOR_REST_BITS
) - 1)
451 << PSEUDOVECTOR_SIZE_BITS
),
453 /* Used to extract pseudovector subtype information. */
454 PSEUDOVECTOR_AREA_BITS
= PSEUDOVECTOR_SIZE_BITS
+ PSEUDOVECTOR_REST_BITS
,
455 PVEC_TYPE_MASK
= 0x3f << PSEUDOVECTOR_AREA_BITS
,
457 /* Number of bits to put in each character in the internal representation
458 of bool vectors. This should not vary across implementations. */
459 BOOL_VECTOR_BITS_PER_CHAR
= 8
462 /* These macros extract various sorts of values from a Lisp_Object.
463 For example, if tem is a Lisp_Object whose type is Lisp_Cons,
464 XCONS (tem) is the struct Lisp_Cons * pointing to the memory for that cons. */
470 TYPEMASK
= (1 << GCTYPEBITS
) - 1,
473 #define XTYPE(a) ((enum Lisp_Type) (XLI (a) & TYPEMASK))
474 #define XINT(a) (XLI (a) >> INTTYPEBITS)
475 #define XUINT(a) ((EMACS_UINT) XLI (a) >> INTTYPEBITS)
476 #define make_number(N) XIL ((EMACS_INT) (N) << INTTYPEBITS)
477 #define make_lisp_ptr(ptr, type) \
478 (eassert (XTYPE (XIL ((intptr_t) (ptr))) == 0), /* Check alignment. */ \
479 XIL ((type) | (intptr_t) (ptr)))
481 #define XPNTR(a) ((intptr_t) (XLI (a) & ~TYPEMASK))
482 #define XUNTAG(a, type) ((intptr_t) (XLI (a) - (type)))
484 #else /* not USE_LSB_TAG */
486 static EMACS_INT
const VALMASK
487 #define VALMASK VAL_MAX
490 #define XTYPE(a) ((enum Lisp_Type) ((EMACS_UINT) XLI (a) >> VALBITS))
492 /* For integers known to be positive, XFASTINT provides fast retrieval
493 and XSETFASTINT provides fast storage. This takes advantage of the
494 fact that Lisp integers have zero-bits in their tags. */
495 #define XFASTINT(a) (XLI (a) + 0)
496 #define XSETFASTINT(a, b) ((a) = XIL (b))
498 /* Extract the value of a Lisp_Object as a (un)signed integer. */
500 #define XINT(a) (XLI (a) << INTTYPEBITS >> INTTYPEBITS)
501 #define XUINT(a) ((EMACS_UINT) (XLI (a) & INTMASK))
502 #define make_number(N) XIL ((EMACS_INT) (N) & INTMASK)
504 #define make_lisp_ptr(ptr, type) \
505 (XIL ((EMACS_INT) ((EMACS_UINT) (type) << VALBITS) \
506 + ((intptr_t) (ptr) & VALMASK)))
509 /* DATA_SEG_BITS forces extra bits to be or'd in with any pointers
510 which were stored in a Lisp_Object. */
511 #define XPNTR(a) ((uintptr_t) ((XLI (a) & VALMASK)) | DATA_SEG_BITS))
513 #define XPNTR(a) ((uintptr_t) (XLI (a) & VALMASK))
516 #endif /* not USE_LSB_TAG */
518 /* Return a (Lisp-integer sized) hash of the Lisp_Object value. Happens to be
519 like XUINT right now, but XUINT should only be applied to objects we know
521 #define XHASH(a) XUINT (a)
523 /* For integers known to be positive, XFASTINT sometimes provides
524 faster retrieval and XSETFASTINT provides faster storage.
525 If not, fallback on the non-accelerated path. */
527 # define XFASTINT(a) (XINT (a))
528 # define XSETFASTINT(a, b) (XSETINT (a, b))
531 /* Extract the pointer value of the Lisp object A, under the
532 assumption that A's type is TYPE. This is a fallback
533 implementation if nothing faster is available. */
535 # define XUNTAG(a, type) XPNTR (a)
538 #define EQ(x, y) (XLI (x) == XLI (y))
540 /* Largest and smallest representable fixnum values. These are the C
541 values. They are macros for use in static initializers. */
542 #define MOST_POSITIVE_FIXNUM (EMACS_INT_MAX >> INTTYPEBITS)
543 #define MOST_NEGATIVE_FIXNUM (-1 - MOST_POSITIVE_FIXNUM)
545 /* Value is non-zero if I doesn't fit into a Lisp fixnum. It is
546 written this way so that it also works if I is of unsigned
547 type or if I is a NaN. */
549 #define FIXNUM_OVERFLOW_P(i) \
550 (! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM))
552 LISP_INLINE
ptrdiff_t
553 clip_to_bounds (ptrdiff_t lower
, EMACS_INT num
, ptrdiff_t upper
)
555 return num
< lower
? lower
: num
<= upper
? num
: upper
;
558 /* Extract a value or address from a Lisp_Object. */
560 #define XCONS(a) (eassert (CONSP (a)), \
561 (struct Lisp_Cons *) XUNTAG (a, Lisp_Cons))
562 #define XVECTOR(a) (eassert (VECTORLIKEP (a)), \
563 (struct Lisp_Vector *) XUNTAG (a, Lisp_Vectorlike))
564 #define XSTRING(a) (eassert (STRINGP (a)), \
565 (struct Lisp_String *) XUNTAG (a, Lisp_String))
566 #define XSYMBOL(a) (eassert (SYMBOLP (a)), \
567 (struct Lisp_Symbol *) XUNTAG (a, Lisp_Symbol))
568 #define XFLOAT(a) (eassert (FLOATP (a)), \
569 (struct Lisp_Float *) XUNTAG (a, Lisp_Float))
573 #define XMISC(a) ((union Lisp_Misc *) XUNTAG (a, Lisp_Misc))
574 #define XMISCANY(a) (eassert (MISCP (a)), &(XMISC (a)->u_any))
575 #define XMISCTYPE(a) (XMISCANY (a)->type)
576 #define XMARKER(a) (eassert (MARKERP (a)), &(XMISC (a)->u_marker))
577 #define XOVERLAY(a) (eassert (OVERLAYP (a)), &(XMISC (a)->u_overlay))
578 #define XSAVE_VALUE(a) (eassert (SAVE_VALUEP (a)), &(XMISC (a)->u_save_value))
580 /* Forwarding object types. */
582 #define XFWDTYPE(a) (a->u_intfwd.type)
583 #define XINTFWD(a) (eassert (INTFWDP (a)), &((a)->u_intfwd))
584 #define XBOOLFWD(a) (eassert (BOOLFWDP (a)), &((a)->u_boolfwd))
585 #define XOBJFWD(a) (eassert (OBJFWDP (a)), &((a)->u_objfwd))
586 #define XBUFFER_OBJFWD(a) \
587 (eassert (BUFFER_OBJFWDP (a)), &((a)->u_buffer_objfwd))
588 #define XKBOARD_OBJFWD(a) \
589 (eassert (KBOARD_OBJFWDP (a)), &((a)->u_kboard_objfwd))
591 /* Pseudovector types. */
593 #define XPROCESS(a) (eassert (PROCESSP (a)), \
594 (struct Lisp_Process *) XUNTAG (a, Lisp_Vectorlike))
595 #define XWINDOW(a) (eassert (WINDOWP (a)), \
596 (struct window *) XUNTAG (a, Lisp_Vectorlike))
597 #define XTERMINAL(a) (eassert (TERMINALP (a)), \
598 (struct terminal *) XUNTAG (a, Lisp_Vectorlike))
599 #define XSUBR(a) (eassert (SUBRP (a)), \
600 (struct Lisp_Subr *) XUNTAG (a, Lisp_Vectorlike))
601 #define XBUFFER(a) (eassert (BUFFERP (a)), \
602 (struct buffer *) XUNTAG (a, Lisp_Vectorlike))
603 #define XCHAR_TABLE(a) (eassert (CHAR_TABLE_P (a)), \
604 (struct Lisp_Char_Table *) XUNTAG (a, Lisp_Vectorlike))
605 #define XSUB_CHAR_TABLE(a) (eassert (SUB_CHAR_TABLE_P (a)), \
606 ((struct Lisp_Sub_Char_Table *) \
607 XUNTAG (a, Lisp_Vectorlike)))
608 #define XBOOL_VECTOR(a) (eassert (BOOL_VECTOR_P (a)), \
609 ((struct Lisp_Bool_Vector *) \
610 XUNTAG (a, Lisp_Vectorlike)))
612 /* Construct a Lisp_Object from a value or address. */
614 #define XSETINT(a, b) ((a) = make_number (b))
615 #define XSETCONS(a, b) ((a) = make_lisp_ptr (b, Lisp_Cons))
616 #define XSETVECTOR(a, b) ((a) = make_lisp_ptr (b, Lisp_Vectorlike))
617 #define XSETSTRING(a, b) ((a) = make_lisp_ptr (b, Lisp_String))
618 #define XSETSYMBOL(a, b) ((a) = make_lisp_ptr (b, Lisp_Symbol))
619 #define XSETFLOAT(a, b) ((a) = make_lisp_ptr (b, Lisp_Float))
623 #define XSETMISC(a, b) ((a) = make_lisp_ptr (b, Lisp_Misc))
624 #define XSETMARKER(a, b) (XSETMISC (a, b), XMISCTYPE (a) = Lisp_Misc_Marker)
626 /* Pseudovector types. */
628 #define XSETPVECTYPE(v, code) \
629 ((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS))
630 #define XSETPVECTYPESIZE(v, code, lispsize, restsize) \
631 ((v)->header.size = (PSEUDOVECTOR_FLAG \
632 | ((code) << PSEUDOVECTOR_AREA_BITS) \
633 | ((restsize) << PSEUDOVECTOR_SIZE_BITS) \
636 /* The cast to struct vectorlike_header * avoids aliasing issues. */
637 #define XSETPSEUDOVECTOR(a, b, code) \
638 XSETTYPED_PSEUDOVECTOR (a, b, \
639 (((struct vectorlike_header *) \
640 XUNTAG (a, Lisp_Vectorlike)) \
643 #define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \
644 (XSETVECTOR (a, b), \
645 eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \
646 == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))))
648 #define XSETWINDOW_CONFIGURATION(a, b) \
649 (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION))
650 #define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS))
651 #define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW))
652 #define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL))
653 #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR))
654 #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED))
655 #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER))
656 #define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE))
657 #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR))
658 #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE))
660 /* Convenience macros for dealing with Lisp arrays. */
662 #define AREF(ARRAY, IDX) XVECTOR ((ARRAY))->contents[IDX]
663 #define ASIZE(ARRAY) XVECTOR ((ARRAY))->header.size
664 #define ASET(ARRAY, IDX, VAL) \
665 (eassert (0 <= (IDX) && (IDX) < ASIZE (ARRAY)), \
666 XVECTOR (ARRAY)->contents[IDX] = (VAL))
668 /* Convenience macros for dealing with Lisp strings. */
670 #define SDATA(string) (XSTRING (string)->data + 0)
671 #define SREF(string, index) (SDATA (string)[index] + 0)
672 #define SSET(string, index, new) (SDATA (string)[index] = (new))
673 #define SCHARS(string) (XSTRING (string)->size + 0)
674 #define SBYTES(string) (STRING_BYTES (XSTRING (string)) + 0)
676 /* Avoid "differ in sign" warnings. */
677 #define SSDATA(x) ((char *) SDATA (x))
679 #define STRING_SET_CHARS(string, newsize) \
680 (XSTRING (string)->size = (newsize))
682 #define STRING_COPYIN(string, index, new, count) \
683 memcpy (SDATA (string) + index, new, count)
687 #define CHECK_TYPE(ok, Qxxxp, x) \
688 do { if (!(ok)) wrong_type_argument (Qxxxp, (x)); } while (0)
690 /* Deprecated and will be removed soon. */
692 #define INTERNAL_FIELD(field) field ## _
694 /* See the macros in intervals.h. */
696 typedef struct interval
*INTERVAL
;
698 /* Complain if object is not string or buffer type. */
699 #define CHECK_STRING_OR_BUFFER(x) \
700 CHECK_TYPE (STRINGP (x) || BUFFERP (x), Qbuffer_or_string_p, x)
704 /* Car of this cons cell. */
709 /* Cdr of this cons cell. */
712 /* Used to chain conses on a free list. */
713 struct Lisp_Cons
*chain
;
717 /* Take the car or cdr of something known to be a cons cell. */
718 /* The _AS_LVALUE macros shouldn't be used outside of the minimal set
719 of code that has to know what a cons cell looks like. Other code not
720 part of the basic lisp implementation should assume that the car and cdr
721 fields are not accessible as lvalues. (What if we want to switch to
722 a copying collector someday? Cached cons cell field addresses may be
723 invalidated at arbitrary points.) */
724 #define XCAR_AS_LVALUE(c) (XCONS (c)->car)
725 #define XCDR_AS_LVALUE(c) (XCONS (c)->u.cdr)
727 /* Use these from normal code. */
728 #define XCAR(c) LISP_MAKE_RVALUE (XCAR_AS_LVALUE (c))
729 #define XCDR(c) LISP_MAKE_RVALUE (XCDR_AS_LVALUE (c))
731 /* Use these to set the fields of a cons cell.
733 Note that both arguments may refer to the same object, so 'n'
734 should not be read after 'c' is first modified. Also, neither
735 argument should be evaluated more than once; side effects are
736 especially common in the second argument. */
737 #define XSETCAR(c,n) (XCAR_AS_LVALUE (c) = (n))
738 #define XSETCDR(c,n) (XCDR_AS_LVALUE (c) = (n))
740 /* Take the car or cdr of something whose type is not known. */
742 (CONSP ((c)) ? XCAR ((c)) \
743 : NILP ((c)) ? Qnil \
744 : wrong_type_argument (Qlistp, (c)))
747 (CONSP ((c)) ? XCDR ((c)) \
748 : NILP ((c)) ? Qnil \
749 : wrong_type_argument (Qlistp, (c)))
751 /* Take the car or cdr of something whose type is not known. */
752 #define CAR_SAFE(c) \
753 (CONSP ((c)) ? XCAR ((c)) : Qnil)
755 #define CDR_SAFE(c) \
756 (CONSP ((c)) ? XCDR ((c)) : Qnil)
758 /* True if STR is a multibyte string. */
759 #define STRING_MULTIBYTE(STR) \
760 (XSTRING (STR)->size_byte >= 0)
762 /* Return the length in bytes of STR. */
764 #ifdef GC_CHECK_STRING_BYTES
767 extern ptrdiff_t string_bytes (struct Lisp_String
*);
768 #define STRING_BYTES(S) string_bytes ((S))
770 #else /* not GC_CHECK_STRING_BYTES */
772 #define STRING_BYTES(STR) \
773 ((STR)->size_byte < 0 ? (STR)->size : (STR)->size_byte)
775 #endif /* not GC_CHECK_STRING_BYTES */
777 /* An upper bound on the number of bytes in a Lisp string, not
778 counting the terminating null. This a tight enough bound to
779 prevent integer overflow errors that would otherwise occur during
780 string size calculations. A string cannot contain more bytes than
781 a fixnum can represent, nor can it be so long that C pointer
782 arithmetic stops working on the string plus its terminating null.
783 Although the actual size limit (see STRING_BYTES_MAX in alloc.c)
784 may be a bit smaller than STRING_BYTES_BOUND, calculating it here
785 would expose alloc.c internal details that we'd rather keep
788 This is a macro for use in static initializers, and a constant for
789 visibility to GDB. The cast to ptrdiff_t ensures that
790 the macro is signed. */
791 static ptrdiff_t const STRING_BYTES_BOUND
=
792 #define STRING_BYTES_BOUND \
793 ((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1))
796 /* Mark STR as a unibyte string. */
797 #define STRING_SET_UNIBYTE(STR) \
798 do { if (EQ (STR, empty_multibyte_string)) \
799 (STR) = empty_unibyte_string; \
800 else XSTRING (STR)->size_byte = -1; } while (0)
802 /* Mark STR as a multibyte string. Assure that STR contains only
803 ASCII characters in advance. */
804 #define STRING_SET_MULTIBYTE(STR) \
805 do { if (EQ (STR, empty_unibyte_string)) \
806 (STR) = empty_multibyte_string; \
807 else XSTRING (STR)->size_byte = XSTRING (STR)->size; } while (0)
809 /* In a string or vector, the sign bit of the `size' is the gc mark bit. */
815 INTERVAL intervals
; /* Text properties in this string. */
819 /* Header of vector-like objects. This documents the layout constraints on
820 vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents
821 compilers from being fooled by Emacs's type punning: the XSETPSEUDOVECTOR
822 and PSEUDOVECTORP macros cast their pointers to struct vectorlike_header *,
823 because when two such pointers potentially alias, a compiler won't
824 incorrectly reorder loads and stores to their size fields. See
825 <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8546>. */
826 struct vectorlike_header
828 /* The only field contains various pieces of information:
829 - The MSB (ARRAY_MARK_FLAG) holds the gcmarkbit.
830 - The next bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain
831 vector (0) or a pseudovector (1).
832 - If PSEUDOVECTOR_FLAG is 0, the rest holds the size (number
833 of slots) of the vector.
834 - If PSEUDOVECTOR_FLAG is 1, the rest is subdivided into three fields:
835 - a) pseudovector subtype held in PVEC_TYPE_MASK field;
836 - b) number of Lisp_Objects slots at the beginning of the object
837 held in PSEUDOVECTOR_SIZE_MASK field. These objects are always
839 - c) size of the rest fields held in PSEUDOVECTOR_REST_MASK and
840 measured in word_size units. Rest fields may also include
841 Lisp_Objects, but these objects usually needs some special treatment
843 There are some exceptions. For PVEC_FREE, b) is always zero. For
844 PVEC_BOOL_VECTOR and PVEC_SUBR, both b) and c) are always zero.
845 Current layout limits the pseudovectors to 63 PVEC_xxx subtypes,
846 4095 Lisp_Objects in GC-ed area and 4095 word-sized other slots. */
850 /* Regular vector is just a header plus array of Lisp_Objects. */
854 struct vectorlike_header header
;
855 Lisp_Object contents
[1];
858 /* A boolvector is a kind of vectorlike, with contents are like a string. */
860 struct Lisp_Bool_Vector
862 /* HEADER.SIZE is the vector's size field. It doesn't have the real size,
863 just the subtype information. */
864 struct vectorlike_header header
;
865 /* This is the size in bits. */
867 /* This contains the actual bits, packed into bytes. */
868 unsigned char data
[1];
871 /* Some handy constants for calculating sizes
872 and offsets, mostly of vectorlike objects. */
876 header_size
= offsetof (struct Lisp_Vector
, contents
),
877 bool_header_size
= offsetof (struct Lisp_Bool_Vector
, data
),
878 word_size
= sizeof (Lisp_Object
)
881 /* If a struct is made to look like a vector, this macro returns the length
882 of the shortest vector that would hold that struct. */
884 #define VECSIZE(type) \
885 ((sizeof (type) - header_size + word_size - 1) / word_size)
887 /* Like VECSIZE, but used when the pseudo-vector has non-Lisp_Object fields
888 at the end and we need to compute the number of Lisp_Object fields (the
889 ones that the GC needs to trace). */
891 #define PSEUDOVECSIZE(type, nonlispfield) \
892 ((offsetof (type, nonlispfield) - header_size) / word_size)
894 /* A char-table is a kind of vectorlike, with contents are like a
895 vector but with a few other slots. For some purposes, it makes
896 sense to handle a char-table with type struct Lisp_Vector. An
897 element of a char table can be any Lisp objects, but if it is a sub
898 char-table, we treat it a table that contains information of a
899 specific range of characters. A sub char-table has the same
900 structure as a vector. A sub char table appears only in an element
901 of a char-table, and there's no way to access it directly from
902 Emacs Lisp program. */
906 #define CHAR_TABLE_REF_ASCII(CT, IDX) \
907 ({struct Lisp_Char_Table *_tbl = NULL; \
910 _tbl = _tbl ? XCHAR_TABLE (_tbl->parent) : XCHAR_TABLE (CT); \
911 _val = (! SUB_CHAR_TABLE_P (_tbl->ascii) ? _tbl->ascii \
912 : XSUB_CHAR_TABLE (_tbl->ascii)->contents[IDX]); \
914 _val = _tbl->defalt; \
915 } while (NILP (_val) && ! NILP (_tbl->parent)); \
918 #else /* not __GNUC__ */
920 #define CHAR_TABLE_REF_ASCII(CT, IDX) \
921 (! NILP (XCHAR_TABLE (CT)->ascii) \
922 ? (! SUB_CHAR_TABLE_P (XCHAR_TABLE (CT)->ascii) \
923 ? XCHAR_TABLE (CT)->ascii \
924 : ! NILP (XSUB_CHAR_TABLE (XCHAR_TABLE (CT)->ascii)->contents[IDX]) \
925 ? XSUB_CHAR_TABLE (XCHAR_TABLE (CT)->ascii)->contents[IDX] \
926 : char_table_ref ((CT), (IDX))) \
927 : char_table_ref ((CT), (IDX)))
929 #endif /* not __GNUC__ */
931 /* Compute A OP B, using the unsigned comparison operator OP. A and B
932 should be integer expressions. This is not the same as
933 mathematical comparison; for example, UNSIGNED_CMP (0, <, -1)
934 returns 1. For efficiency, prefer plain unsigned comparison if A
935 and B's sizes both fit (after integer promotion). */
936 #define UNSIGNED_CMP(a, op, b) \
937 (max (sizeof ((a) + 0), sizeof ((b) + 0)) <= sizeof (unsigned) \
938 ? ((a) + (unsigned) 0) op ((b) + (unsigned) 0) \
939 : ((a) + (uintmax_t) 0) op ((b) + (uintmax_t) 0))
941 /* Nonzero iff C is an ASCII character. */
942 #define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80)
944 /* Almost equivalent to Faref (CT, IDX) with optimization for ASCII
945 characters. Do not check validity of CT. */
946 #define CHAR_TABLE_REF(CT, IDX) \
947 (ASCII_CHAR_P (IDX) ? CHAR_TABLE_REF_ASCII ((CT), (IDX)) \
948 : char_table_ref ((CT), (IDX)))
950 /* Equivalent to Faset (CT, IDX, VAL) with optimization for ASCII and
951 8-bit European characters. Do not check validity of CT. */
952 #define CHAR_TABLE_SET(CT, IDX, VAL) \
953 (ASCII_CHAR_P (IDX) && SUB_CHAR_TABLE_P (XCHAR_TABLE (CT)->ascii) \
954 ? set_sub_char_table_contents (XCHAR_TABLE (CT)->ascii, IDX, VAL) \
955 : char_table_set (CT, IDX, VAL))
957 enum CHARTAB_SIZE_BITS
959 CHARTAB_SIZE_BITS_0
= 6,
960 CHARTAB_SIZE_BITS_1
= 4,
961 CHARTAB_SIZE_BITS_2
= 5,
962 CHARTAB_SIZE_BITS_3
= 7
965 extern const int chartab_size
[4];
967 struct Lisp_Char_Table
969 /* HEADER.SIZE is the vector's size field, which also holds the
970 pseudovector type information. It holds the size, too.
971 The size counts the defalt, parent, purpose, ascii,
972 contents, and extras slots. */
973 struct vectorlike_header header
;
975 /* This holds a default value,
976 which is used whenever the value for a specific character is nil. */
979 /* This points to another char table, which we inherit from when the
980 value for a specific character is nil. The `defalt' slot takes
981 precedence over this. */
984 /* This is a symbol which says what kind of use this char-table is
988 /* The bottom sub char-table for characters of the range 0..127. It
989 is nil if none of ASCII character has a specific value. */
992 Lisp_Object contents
[(1 << CHARTAB_SIZE_BITS_0
)];
994 /* These hold additional data. It is a vector. */
995 Lisp_Object extras
[1];
998 struct Lisp_Sub_Char_Table
1000 /* HEADER.SIZE is the vector's size field, which also holds the
1001 pseudovector type information. It holds the size, too. */
1002 struct vectorlike_header header
;
1004 /* Depth of this sub char-table. It should be 1, 2, or 3. A sub
1005 char-table of depth 1 contains 16 elements, and each element
1006 covers 4096 (128*32) characters. A sub char-table of depth 2
1007 contains 32 elements, and each element covers 128 characters. A
1008 sub char-table of depth 3 contains 128 elements, and each element
1009 is for one character. */
1012 /* Minimum character covered by the sub char-table. */
1013 Lisp_Object min_char
;
1015 /* Use set_sub_char_table_contents to set this. */
1016 Lisp_Object contents
[1];
1019 /* This structure describes a built-in function.
1020 It is generated by the DEFUN macro only.
1021 defsubr makes it into a Lisp object. */
1025 struct vectorlike_header header
;
1027 Lisp_Object (*a0
) (void);
1028 Lisp_Object (*a1
) (Lisp_Object
);
1029 Lisp_Object (*a2
) (Lisp_Object
, Lisp_Object
);
1030 Lisp_Object (*a3
) (Lisp_Object
, Lisp_Object
, Lisp_Object
);
1031 Lisp_Object (*a4
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1032 Lisp_Object (*a5
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1033 Lisp_Object (*a6
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1034 Lisp_Object (*a7
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1035 Lisp_Object (*a8
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1036 Lisp_Object (*aUNEVALLED
) (Lisp_Object args
);
1037 Lisp_Object (*aMANY
) (ptrdiff_t, Lisp_Object
*);
1039 short min_args
, max_args
;
1040 const char *symbol_name
;
1041 const char *intspec
;
1045 /* This is the number of slots that every char table must have. This
1046 counts the ordinary slots and the top, defalt, parent, and purpose
1048 enum CHAR_TABLE_STANDARD_SLOTS
1050 CHAR_TABLE_STANDARD_SLOTS
= VECSIZE (struct Lisp_Char_Table
) - 1
1053 /* Return the number of "extra" slots in the char table CT. */
1055 #define CHAR_TABLE_EXTRA_SLOTS(CT) \
1056 (((CT)->header.size & PSEUDOVECTOR_SIZE_MASK) - CHAR_TABLE_STANDARD_SLOTS)
1059 /***********************************************************************
1061 ***********************************************************************/
1063 /* Interned state of a symbol. */
1065 enum symbol_interned
1067 SYMBOL_UNINTERNED
= 0,
1068 SYMBOL_INTERNED
= 1,
1069 SYMBOL_INTERNED_IN_INITIAL_OBARRAY
= 2
1072 enum symbol_redirect
1074 SYMBOL_PLAINVAL
= 4,
1075 SYMBOL_VARALIAS
= 1,
1076 SYMBOL_LOCALIZED
= 2,
1077 SYMBOL_FORWARDED
= 3
1082 unsigned gcmarkbit
: 1;
1084 /* Indicates where the value can be found:
1085 0 : it's a plain var, the value is in the `value' field.
1086 1 : it's a varalias, the value is really in the `alias' symbol.
1087 2 : it's a localized var, the value is in the `blv' object.
1088 3 : it's a forwarding variable, the value is in `forward'. */
1089 ENUM_BF (symbol_redirect
) redirect
: 3;
1091 /* Non-zero means symbol is constant, i.e. changing its value
1092 should signal an error. If the value is 3, then the var
1093 can be changed, but only by `defconst'. */
1094 unsigned constant
: 2;
1096 /* Interned state of the symbol. This is an enumerator from
1097 enum symbol_interned. */
1098 unsigned interned
: 2;
1100 /* Non-zero means that this variable has been explicitly declared
1101 special (with `defvar' etc), and shouldn't be lexically bound. */
1102 unsigned declared_special
: 1;
1104 /* The symbol's name, as a Lisp string. */
1107 /* Value of the symbol or Qunbound if unbound. Which alternative of the
1108 union is used depends on the `redirect' field above. */
1111 struct Lisp_Symbol
*alias
;
1112 struct Lisp_Buffer_Local_Value
*blv
;
1113 union Lisp_Fwd
*fwd
;
1116 /* Function value of the symbol or Qnil if not fboundp. */
1117 Lisp_Object function
;
1119 /* The symbol's property list. */
1122 /* Next symbol in obarray bucket, if the symbol is interned. */
1123 struct Lisp_Symbol
*next
;
1126 /* Value is name of symbol. */
1128 #define SYMBOL_VAL(sym) \
1129 (eassert ((sym)->redirect == SYMBOL_PLAINVAL), sym->val.value)
1130 #define SYMBOL_ALIAS(sym) \
1131 (eassert ((sym)->redirect == SYMBOL_VARALIAS), (sym)->val.alias)
1132 #define SYMBOL_BLV(sym) \
1133 (eassert ((sym)->redirect == SYMBOL_LOCALIZED), (sym)->val.blv)
1134 #define SYMBOL_FWD(sym) \
1135 (eassert ((sym)->redirect == SYMBOL_FORWARDED), (sym)->val.fwd)
1136 #define SET_SYMBOL_VAL(sym, v) \
1137 (eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value = (v))
1138 #define SET_SYMBOL_ALIAS(sym, v) \
1139 (eassert ((sym)->redirect == SYMBOL_VARALIAS), (sym)->val.alias = (v))
1140 #define SET_SYMBOL_BLV(sym, v) \
1141 (eassert ((sym)->redirect == SYMBOL_LOCALIZED), (sym)->val.blv = (v))
1142 #define SET_SYMBOL_FWD(sym, v) \
1143 (eassert ((sym)->redirect == SYMBOL_FORWARDED), (sym)->val.fwd = (v))
1145 #define SYMBOL_NAME(sym) XSYMBOL (sym)->name
1147 /* Value is non-zero if SYM is an interned symbol. */
1149 #define SYMBOL_INTERNED_P(sym) \
1150 (XSYMBOL (sym)->interned != SYMBOL_UNINTERNED)
1152 /* Value is non-zero if SYM is interned in initial_obarray. */
1154 #define SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P(sym) \
1155 (XSYMBOL (sym)->interned == SYMBOL_INTERNED_IN_INITIAL_OBARRAY)
1157 /* Value is non-zero if symbol is considered a constant, i.e. its
1158 value cannot be changed (there is an exception for keyword symbols,
1159 whose value can be set to the keyword symbol itself). */
1161 #define SYMBOL_CONSTANT_P(sym) XSYMBOL (sym)->constant
1163 #define DEFSYM(sym, name) \
1164 do { (sym) = intern_c_string ((name)); staticpro (&(sym)); } while (0)
1167 /***********************************************************************
1169 ***********************************************************************/
1171 /* The structure of a Lisp hash table. */
1173 struct hash_table_test
1175 /* Name of the function used to compare keys. */
1178 /* User-supplied hash function, or nil. */
1179 Lisp_Object user_hash_function
;
1181 /* User-supplied key comparison function, or nil. */
1182 Lisp_Object user_cmp_function
;
1184 /* C function to compare two keys. */
1185 bool (*cmpfn
) (struct hash_table_test
*t
, Lisp_Object
, Lisp_Object
);
1187 /* C function to compute hash code. */
1188 EMACS_UINT (*hashfn
) (struct hash_table_test
*t
, Lisp_Object
);
1191 struct Lisp_Hash_Table
1193 /* This is for Lisp; the hash table code does not refer to it. */
1194 struct vectorlike_header header
;
1196 /* Nil if table is non-weak. Otherwise a symbol describing the
1197 weakness of the table. */
1200 /* When the table is resized, and this is an integer, compute the
1201 new size by adding this to the old size. If a float, compute the
1202 new size by multiplying the old size with this factor. */
1203 Lisp_Object rehash_size
;
1205 /* Resize hash table when number of entries/ table size is >= this
1207 Lisp_Object rehash_threshold
;
1209 /* Vector of hash codes.. If hash[I] is nil, this means that that
1210 entry I is unused. */
1213 /* Vector used to chain entries. If entry I is free, next[I] is the
1214 entry number of the next free item. If entry I is non-free,
1215 next[I] is the index of the next entry in the collision chain. */
1218 /* Index of first free entry in free list. */
1219 Lisp_Object next_free
;
1221 /* Bucket vector. A non-nil entry is the index of the first item in
1222 a collision chain. This vector's size can be larger than the
1223 hash table size to reduce collisions. */
1226 /* Only the fields above are traced normally by the GC. The ones below
1227 `count' are special and are either ignored by the GC or traced in
1228 a special way (e.g. because of weakness). */
1230 /* Number of key/value entries in the table. */
1233 /* Vector of keys and values. The key of item I is found at index
1234 2 * I, the value is found at index 2 * I + 1.
1235 This is gc_marked specially if the table is weak. */
1236 Lisp_Object key_and_value
;
1238 /* The comparison and hash functions. */
1239 struct hash_table_test test
;
1241 /* Next weak hash table if this is a weak hash table. The head
1242 of the list is in weak_hash_tables. */
1243 struct Lisp_Hash_Table
*next_weak
;
1247 #define XHASH_TABLE(OBJ) \
1248 ((struct Lisp_Hash_Table *) XUNTAG (OBJ, Lisp_Vectorlike))
1250 #define XSET_HASH_TABLE(VAR, PTR) \
1251 (XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE))
1253 #define HASH_TABLE_P(OBJ) PSEUDOVECTORP (OBJ, PVEC_HASH_TABLE)
1255 #define CHECK_HASH_TABLE(x) \
1256 CHECK_TYPE (HASH_TABLE_P (x), Qhash_table_p, x)
1258 /* Value is the key part of entry IDX in hash table H. */
1260 #define HASH_KEY(H, IDX) AREF ((H)->key_and_value, 2 * (IDX))
1262 /* Value is the value part of entry IDX in hash table H. */
1264 #define HASH_VALUE(H, IDX) AREF ((H)->key_and_value, 2 * (IDX) + 1)
1266 /* Value is the index of the next entry following the one at IDX
1269 #define HASH_NEXT(H, IDX) AREF ((H)->next, (IDX))
1271 /* Value is the hash code computed for entry IDX in hash table H. */
1273 #define HASH_HASH(H, IDX) AREF ((H)->hash, (IDX))
1275 /* Value is the index of the element in hash table H that is the
1276 start of the collision list at index IDX in the index vector of H. */
1278 #define HASH_INDEX(H, IDX) AREF ((H)->index, (IDX))
1280 /* Value is the size of hash table H. */
1282 #define HASH_TABLE_SIZE(H) ASIZE ((H)->next)
1284 /* Default size for hash tables if not specified. */
1286 enum DEFAULT_HASH_SIZE
{ DEFAULT_HASH_SIZE
= 65 };
1288 /* Default threshold specifying when to resize a hash table. The
1289 value gives the ratio of current entries in the hash table and the
1290 size of the hash table. */
1292 static double const DEFAULT_REHASH_THRESHOLD
= 0.8;
1294 /* Default factor by which to increase the size of a hash table. */
1296 static double const DEFAULT_REHASH_SIZE
= 1.5;
1298 /* Combine two integers X and Y for hashing. The result might not fit
1299 into a Lisp integer. */
1301 LISP_INLINE EMACS_UINT
1302 sxhash_combine (EMACS_UINT x
, EMACS_UINT y
)
1304 return (x
<< 4) + (x
>> (BITS_PER_EMACS_INT
- 4)) + y
;
1307 /* These structures are used for various misc types. */
1309 struct Lisp_Misc_Any
/* Supertype of all Misc types. */
1311 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_??? */
1312 unsigned gcmarkbit
: 1;
1318 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Marker */
1319 unsigned gcmarkbit
: 1;
1321 /* This flag is temporarily used in the functions
1322 decode/encode_coding_object to record that the marker position
1323 must be adjusted after the conversion. */
1324 unsigned int need_adjustment
: 1;
1325 /* 1 means normal insertion at the marker's position
1326 leaves the marker after the inserted text. */
1327 unsigned int insertion_type
: 1;
1328 /* This is the buffer that the marker points into, or 0 if it points nowhere.
1329 Note: a chain of markers can contain markers pointing into different
1330 buffers (the chain is per buffer_text rather than per buffer, so it's
1331 shared between indirect buffers). */
1332 /* This is used for (other than NULL-checking):
1334 - Fset_marker: check eq(oldbuf, newbuf) to avoid unchain+rechain.
1335 - unchain_marker: to find the list from which to unchain.
1336 - Fkill_buffer: to only unchain the markers of current indirect buffer.
1338 struct buffer
*buffer
;
1340 /* The remaining fields are meaningless in a marker that
1341 does not point anywhere. */
1343 /* For markers that point somewhere,
1344 this is used to chain of all the markers in a given buffer. */
1345 /* We could remove it and use an array in buffer_text instead.
1346 That would also allow to preserve it ordered. */
1347 struct Lisp_Marker
*next
;
1348 /* This is the char position where the marker points. */
1350 /* This is the byte position.
1351 It's mostly used as a charpos<->bytepos cache (i.e. it's not directly
1352 used to implement the functionality of markers, but rather to (ab)use
1353 markers as a cache for char<->byte mappings). */
1357 /* START and END are markers in the overlay's buffer, and
1358 PLIST is the overlay's property list. */
1360 /* An overlay's real data content is:
1362 - buffer (really there are two buffer pointers, one per marker,
1363 and both points to the same buffer)
1364 - insertion type of both ends (per-marker fields)
1365 - start & start byte (of start marker)
1366 - end & end byte (of end marker)
1367 - next (singly linked list of overlays)
1368 - next fields of start and end markers (singly linked list of markers).
1369 I.e. 9words plus 2 bits, 3words of which are for external linked lists.
1372 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Overlay */
1373 unsigned gcmarkbit
: 1;
1375 struct Lisp_Overlay
*next
;
1381 /* Hold a C pointer for later use.
1382 This type of object is used in the arg to record_unwind_protect. */
1383 struct Lisp_Save_Value
1385 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Save_Value */
1386 unsigned gcmarkbit
: 1;
1388 /* If DOGC is set, POINTER is the address of a memory
1389 area containing INTEGER potential Lisp_Objects. */
1390 unsigned int dogc
: 1;
1396 /* A miscellaneous object, when it's on the free list. */
1399 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Free */
1400 unsigned gcmarkbit
: 1;
1402 union Lisp_Misc
*chain
;
1405 /* To get the type field of a union Lisp_Misc, use XMISCTYPE.
1406 It uses one of these struct subtypes to get the type field. */
1410 struct Lisp_Misc_Any u_any
; /* Supertype of all Misc types. */
1411 struct Lisp_Free u_free
;
1412 struct Lisp_Marker u_marker
;
1413 struct Lisp_Overlay u_overlay
;
1414 struct Lisp_Save_Value u_save_value
;
1417 /* Forwarding pointer to an int variable.
1418 This is allowed only in the value cell of a symbol,
1419 and it means that the symbol's value really lives in the
1420 specified int variable. */
1423 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Int */
1427 /* Boolean forwarding pointer to an int variable.
1428 This is like Lisp_Intfwd except that the ostensible
1429 "value" of the symbol is t if the int variable is nonzero,
1430 nil if it is zero. */
1433 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Bool */
1437 /* Forwarding pointer to a Lisp_Object variable.
1438 This is allowed only in the value cell of a symbol,
1439 and it means that the symbol's value really lives in the
1440 specified variable. */
1443 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Obj */
1444 Lisp_Object
*objvar
;
1447 /* Like Lisp_Objfwd except that value lives in a slot in the
1448 current buffer. Value is byte index of slot within buffer. */
1449 struct Lisp_Buffer_Objfwd
1451 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Buffer_Obj */
1453 Lisp_Object slottype
; /* Qnil, Lisp_Int, Lisp_Symbol, or Lisp_String. */
1456 /* struct Lisp_Buffer_Local_Value is used in a symbol value cell when
1457 the symbol has buffer-local or frame-local bindings. (Exception:
1458 some buffer-local variables are built-in, with their values stored
1459 in the buffer structure itself. They are handled differently,
1460 using struct Lisp_Buffer_Objfwd.)
1462 The `realvalue' slot holds the variable's current value, or a
1463 forwarding pointer to where that value is kept. This value is the
1464 one that corresponds to the loaded binding. To read or set the
1465 variable, you must first make sure the right binding is loaded;
1466 then you can access the value in (or through) `realvalue'.
1468 `buffer' and `frame' are the buffer and frame for which the loaded
1469 binding was found. If those have changed, to make sure the right
1470 binding is loaded it is necessary to find which binding goes with
1471 the current buffer and selected frame, then load it. To load it,
1472 first unload the previous binding, then copy the value of the new
1473 binding into `realvalue' (or through it). Also update
1474 LOADED-BINDING to point to the newly loaded binding.
1476 `local_if_set' indicates that merely setting the variable creates a
1477 local binding for the current buffer. Otherwise the latter, setting
1478 the variable does not do that; only make-local-variable does that. */
1480 struct Lisp_Buffer_Local_Value
1482 /* 1 means that merely setting the variable creates a local
1483 binding for the current buffer. */
1484 unsigned int local_if_set
: 1;
1485 /* 1 means this variable can have frame-local bindings, otherwise, it is
1486 can have buffer-local bindings. The two cannot be combined. */
1487 unsigned int frame_local
: 1;
1488 /* 1 means that the binding now loaded was found.
1489 Presumably equivalent to (defcell!=valcell). */
1490 unsigned int found
: 1;
1491 /* If non-NULL, a forwarding to the C var where it should also be set. */
1492 union Lisp_Fwd
*fwd
; /* Should never be (Buffer|Kboard)_Objfwd. */
1493 /* The buffer or frame for which the loaded binding was found. */
1495 /* A cons cell that holds the default value. It has the form
1496 (SYMBOL . DEFAULT-VALUE). */
1497 Lisp_Object defcell
;
1498 /* The cons cell from `where's parameter alist.
1499 It always has the form (SYMBOL . VALUE)
1500 Note that if `forward' is non-nil, VALUE may be out of date.
1501 Also if the currently loaded binding is the default binding, then
1502 this is `eq'ual to defcell. */
1503 Lisp_Object valcell
;
1506 /* Like Lisp_Objfwd except that value lives in a slot in the
1508 struct Lisp_Kboard_Objfwd
1510 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Kboard_Obj */
1516 struct Lisp_Intfwd u_intfwd
;
1517 struct Lisp_Boolfwd u_boolfwd
;
1518 struct Lisp_Objfwd u_objfwd
;
1519 struct Lisp_Buffer_Objfwd u_buffer_objfwd
;
1520 struct Lisp_Kboard_Objfwd u_kboard_objfwd
;
1523 /* Lisp floating point type. */
1529 struct Lisp_Float
*chain
;
1533 #define XFLOAT_DATA(f) (0 ? XFLOAT (f)->u.data : XFLOAT (f)->u.data)
1534 #define XFLOAT_INIT(f, n) (XFLOAT (f)->u.data = (n))
1536 /* Most hosts nowadays use IEEE floating point, so they use IEC 60559
1537 representations, have infinities and NaNs, and do not trap on
1538 exceptions. Define IEEE_FLOATING_POINT if this host is one of the
1539 typical ones. The C11 macro __STDC_IEC_559__ is close to what is
1540 wanted here, but is not quite right because Emacs does not require
1541 all the features of C11 Annex F (and does not require C11 at all,
1542 for that matter). */
1543 #define IEEE_FLOATING_POINT (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \
1544 && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128)
1546 /* A character, declared with the following typedef, is a member
1547 of some character set associated with the current buffer. */
1548 #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */
1550 typedef unsigned char UCHAR
;
1553 /* Meanings of slots in a Lisp_Compiled: */
1557 COMPILED_ARGLIST
= 0,
1558 COMPILED_BYTECODE
= 1,
1559 COMPILED_CONSTANTS
= 2,
1560 COMPILED_STACK_DEPTH
= 3,
1561 COMPILED_DOC_STRING
= 4,
1562 COMPILED_INTERACTIVE
= 5
1565 /* Flag bits in a character. These also get used in termhooks.h.
1566 Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE
1567 (MUlti-Lingual Emacs) might need 22 bits for the character value
1568 itself, so we probably shouldn't use any bits lower than 0x0400000. */
1571 CHAR_ALT
= 0x0400000,
1572 CHAR_SUPER
= 0x0800000,
1573 CHAR_HYPER
= 0x1000000,
1574 CHAR_SHIFT
= 0x2000000,
1575 CHAR_CTL
= 0x4000000,
1576 CHAR_META
= 0x8000000,
1578 CHAR_MODIFIER_MASK
=
1579 CHAR_ALT
| CHAR_SUPER
| CHAR_HYPER
| CHAR_SHIFT
| CHAR_CTL
| CHAR_META
,
1581 /* Actually, the current Emacs uses 22 bits for the character value
1589 /* The glyph datatype, used to represent characters on the display.
1590 It consists of a char code and a face id. */
1597 /* Return a glyph's character code. */
1598 #define GLYPH_CHAR(glyph) ((glyph).ch)
1600 /* Return a glyph's face ID. */
1601 #define GLYPH_FACE(glyph) ((glyph).face_id)
1603 #define SET_GLYPH_CHAR(glyph, char) ((glyph).ch = (char))
1604 #define SET_GLYPH_FACE(glyph, face) ((glyph).face_id = (face))
1605 #define SET_GLYPH(glyph, char, face) ((glyph).ch = (char), (glyph).face_id = (face))
1607 /* Return 1 if GLYPH contains valid character code. */
1608 #define GLYPH_CHAR_VALID_P(glyph) CHAR_VALID_P (GLYPH_CHAR (glyph))
1611 /* Glyph Code from a display vector may either be an integer which
1612 encodes a char code in the lower CHARACTERBITS bits and a (very small)
1613 face-id in the upper bits, or it may be a cons (CHAR . FACE-ID). */
1615 #define GLYPH_CODE_P(gc) \
1617 ? (CHARACTERP (XCAR (gc)) \
1618 && RANGED_INTEGERP (0, XCDR (gc), MAX_FACE_ID)) \
1619 : (RANGED_INTEGERP \
1621 (MAX_FACE_ID < TYPE_MAXIMUM (EMACS_INT) >> CHARACTERBITS \
1622 ? ((EMACS_INT) MAX_FACE_ID << CHARACTERBITS) | MAX_CHAR \
1623 : TYPE_MAXIMUM (EMACS_INT)))))
1625 /* The following are valid only if GLYPH_CODE_P (gc). */
1627 #define GLYPH_CODE_CHAR(gc) \
1628 (CONSP (gc) ? XINT (XCAR (gc)) : XINT (gc) & ((1 << CHARACTERBITS) - 1))
1630 #define GLYPH_CODE_FACE(gc) \
1631 (CONSP (gc) ? XINT (XCDR (gc)) : XINT (gc) >> CHARACTERBITS)
1633 #define SET_GLYPH_FROM_GLYPH_CODE(glyph, gc) \
1637 SET_GLYPH (glyph, XINT (XCAR (gc)), XINT (XCDR (gc))); \
1639 SET_GLYPH (glyph, (XINT (gc) & ((1 << CHARACTERBITS)-1)), \
1640 (XINT (gc) >> CHARACTERBITS)); \
1644 /* Structure to hold mouse highlight data. This is here because other
1645 header files need it for defining struct x_output etc. */
1647 /* These variables describe the range of text currently shown in its
1648 mouse-face, together with the window they apply to. As long as
1649 the mouse stays within this range, we need not redraw anything on
1650 its account. Rows and columns are glyph matrix positions in
1651 MOUSE_FACE_WINDOW. */
1652 int mouse_face_beg_row
, mouse_face_beg_col
;
1653 int mouse_face_beg_x
, mouse_face_beg_y
;
1654 int mouse_face_end_row
, mouse_face_end_col
;
1655 int mouse_face_end_x
, mouse_face_end_y
;
1656 Lisp_Object mouse_face_window
;
1657 int mouse_face_face_id
;
1658 Lisp_Object mouse_face_overlay
;
1660 /* FRAME and X, Y position of mouse when last checked for
1661 highlighting. X and Y can be negative or out of range for the frame. */
1662 struct frame
*mouse_face_mouse_frame
;
1663 int mouse_face_mouse_x
, mouse_face_mouse_y
;
1665 /* Nonzero if part of the text currently shown in
1666 its mouse-face is beyond the window end. */
1667 unsigned mouse_face_past_end
: 1;
1669 /* Nonzero means defer mouse-motion highlighting. */
1670 unsigned mouse_face_defer
: 1;
1672 /* Nonzero means that the mouse highlight should not be shown. */
1673 unsigned mouse_face_hidden
: 1;
1676 /* Data type checking. */
1678 #define NILP(x) EQ (x, Qnil)
1680 #define NUMBERP(x) (INTEGERP (x) || FLOATP (x))
1681 #define NATNUMP(x) (INTEGERP (x) && XINT (x) >= 0)
1683 #define RANGED_INTEGERP(lo, x, hi) \
1684 (INTEGERP (x) && (lo) <= XINT (x) && XINT (x) <= (hi))
1685 #define TYPE_RANGED_INTEGERP(type, x) \
1686 (TYPE_SIGNED (type) \
1687 ? RANGED_INTEGERP (TYPE_MINIMUM (type), x, TYPE_MAXIMUM (type)) \
1688 : RANGED_INTEGERP (0, x, TYPE_MAXIMUM (type)))
1690 #define INTEGERP(x) (LISP_INT_TAG_P (XTYPE ((x))))
1691 #define SYMBOLP(x) (XTYPE ((x)) == Lisp_Symbol)
1692 #define MISCP(x) (XTYPE ((x)) == Lisp_Misc)
1693 #define VECTORLIKEP(x) (XTYPE ((x)) == Lisp_Vectorlike)
1694 #define STRINGP(x) (XTYPE ((x)) == Lisp_String)
1695 #define CONSP(x) (XTYPE ((x)) == Lisp_Cons)
1697 #define FLOATP(x) (XTYPE ((x)) == Lisp_Float)
1698 #define VECTORP(x) (VECTORLIKEP (x) && !(ASIZE (x) & PSEUDOVECTOR_FLAG))
1699 #define OVERLAYP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Overlay)
1700 #define MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker)
1701 #define SAVE_VALUEP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Save_Value)
1703 #define AUTOLOADP(x) (CONSP (x) && EQ (Qautoload, XCAR (x)))
1705 #define INTFWDP(x) (XFWDTYPE (x) == Lisp_Fwd_Int)
1706 #define BOOLFWDP(x) (XFWDTYPE (x) == Lisp_Fwd_Bool)
1707 #define OBJFWDP(x) (XFWDTYPE (x) == Lisp_Fwd_Obj)
1708 #define BUFFER_OBJFWDP(x) (XFWDTYPE (x) == Lisp_Fwd_Buffer_Obj)
1709 #define KBOARD_OBJFWDP(x) (XFWDTYPE (x) == Lisp_Fwd_Kboard_Obj)
1711 /* True if object X is a pseudovector whose code is CODE. The cast to struct
1712 vectorlike_header * avoids aliasing issues. */
1713 #define PSEUDOVECTORP(x, code) \
1714 TYPED_PSEUDOVECTORP (x, vectorlike_header, code)
1716 #define PSEUDOVECTOR_TYPEP(v, code) \
1717 (((v)->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \
1718 == (PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS)))
1720 /* True if object X, with internal type struct T *, is a pseudovector whose
1722 #define TYPED_PSEUDOVECTORP(x, t, code) \
1724 && PSEUDOVECTOR_TYPEP ((struct t *) XUNTAG (x, Lisp_Vectorlike), code))
1726 /* Test for specific pseudovector types. */
1727 #define WINDOW_CONFIGURATIONP(x) PSEUDOVECTORP (x, PVEC_WINDOW_CONFIGURATION)
1728 #define PROCESSP(x) PSEUDOVECTORP (x, PVEC_PROCESS)
1729 #define WINDOWP(x) PSEUDOVECTORP (x, PVEC_WINDOW)
1730 #define TERMINALP(x) PSEUDOVECTORP (x, PVEC_TERMINAL)
1731 #define SUBRP(x) PSEUDOVECTORP (x, PVEC_SUBR)
1732 #define COMPILEDP(x) PSEUDOVECTORP (x, PVEC_COMPILED)
1733 #define BUFFERP(x) PSEUDOVECTORP (x, PVEC_BUFFER)
1734 #define CHAR_TABLE_P(x) PSEUDOVECTORP (x, PVEC_CHAR_TABLE)
1735 #define SUB_CHAR_TABLE_P(x) PSEUDOVECTORP (x, PVEC_SUB_CHAR_TABLE)
1736 #define BOOL_VECTOR_P(x) PSEUDOVECTORP (x, PVEC_BOOL_VECTOR)
1737 #define FRAMEP(x) PSEUDOVECTORP (x, PVEC_FRAME)
1739 /* Test for image (image . spec) */
1740 #define IMAGEP(x) (CONSP (x) && EQ (XCAR (x), Qimage))
1745 (VECTORP (x) || STRINGP (x) || CHAR_TABLE_P (x) || BOOL_VECTOR_P (x))
1747 #define CHECK_LIST(x) \
1748 CHECK_TYPE (CONSP (x) || NILP (x), Qlistp, x)
1750 #define CHECK_LIST_CONS(x, y) \
1751 CHECK_TYPE (CONSP (x), Qlistp, y)
1753 #define CHECK_LIST_END(x, y) \
1754 CHECK_TYPE (NILP (x), Qlistp, y)
1756 #define CHECK_STRING(x) \
1757 CHECK_TYPE (STRINGP (x), Qstringp, x)
1759 #define CHECK_STRING_CAR(x) \
1760 CHECK_TYPE (STRINGP (XCAR (x)), Qstringp, XCAR (x))
1762 #define CHECK_CONS(x) \
1763 CHECK_TYPE (CONSP (x), Qconsp, x)
1765 #define CHECK_SYMBOL(x) \
1766 CHECK_TYPE (SYMBOLP (x), Qsymbolp, x)
1768 #define CHECK_CHAR_TABLE(x) \
1769 CHECK_TYPE (CHAR_TABLE_P (x), Qchar_table_p, x)
1771 #define CHECK_VECTOR(x) \
1772 CHECK_TYPE (VECTORP (x), Qvectorp, x)
1774 #define CHECK_VECTOR_OR_STRING(x) \
1775 CHECK_TYPE (VECTORP (x) || STRINGP (x), Qarrayp, x)
1777 #define CHECK_ARRAY(x, Qxxxp) \
1778 CHECK_TYPE (ARRAYP (x), Qxxxp, x)
1780 #define CHECK_VECTOR_OR_CHAR_TABLE(x) \
1781 CHECK_TYPE (VECTORP (x) || CHAR_TABLE_P (x), Qvector_or_char_table_p, x)
1783 #define CHECK_BUFFER(x) \
1784 CHECK_TYPE (BUFFERP (x), Qbufferp, x)
1786 #define CHECK_WINDOW(x) \
1787 CHECK_TYPE (WINDOWP (x), Qwindowp, x)
1789 #define CHECK_WINDOW_CONFIGURATION(x) \
1790 CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x)
1792 #define CHECK_PROCESS(x) \
1793 CHECK_TYPE (PROCESSP (x), Qprocessp, x)
1795 #define CHECK_SUBR(x) \
1796 CHECK_TYPE (SUBRP (x), Qsubrp, x)
1798 #define CHECK_NUMBER(x) \
1799 CHECK_TYPE (INTEGERP (x), Qintegerp, x)
1801 #define CHECK_NATNUM(x) \
1802 CHECK_TYPE (NATNUMP (x), Qwholenump, x)
1804 #define CHECK_RANGED_INTEGER(x, lo, hi) \
1807 if (! ((lo) <= XINT (x) && XINT (x) <= (hi))) \
1808 args_out_of_range_3 \
1810 make_number ((lo) < 0 && (lo) < MOST_NEGATIVE_FIXNUM \
1811 ? MOST_NEGATIVE_FIXNUM \
1813 make_number (min (hi, MOST_POSITIVE_FIXNUM))); \
1815 #define CHECK_TYPE_RANGED_INTEGER(type, x) \
1817 if (TYPE_SIGNED (type)) \
1818 CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \
1820 CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \
1823 #define CHECK_MARKER(x) \
1824 CHECK_TYPE (MARKERP (x), Qmarkerp, x)
1826 #define CHECK_NUMBER_COERCE_MARKER(x) \
1827 do { if (MARKERP ((x))) XSETFASTINT (x, marker_position (x)); \
1828 else CHECK_TYPE (INTEGERP (x), Qinteger_or_marker_p, x); } while (0)
1830 #define XFLOATINT(n) extract_float((n))
1832 #define CHECK_FLOAT(x) \
1833 CHECK_TYPE (FLOATP (x), Qfloatp, x)
1835 #define CHECK_NUMBER_OR_FLOAT(x) \
1836 CHECK_TYPE (FLOATP (x) || INTEGERP (x), Qnumberp, x)
1838 #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x) \
1839 do { if (MARKERP (x)) XSETFASTINT (x, marker_position (x)); \
1840 else CHECK_TYPE (INTEGERP (x) || FLOATP (x), Qnumber_or_marker_p, x); } while (0)
1842 #define CHECK_OVERLAY(x) \
1843 CHECK_TYPE (OVERLAYP (x), Qoverlayp, x)
1845 /* Since we can't assign directly to the CAR or CDR fields of a cons
1846 cell, use these when checking that those fields contain numbers. */
1847 #define CHECK_NUMBER_CAR(x) \
1849 Lisp_Object tmp = XCAR (x); \
1850 CHECK_NUMBER (tmp); \
1851 XSETCAR ((x), tmp); \
1854 #define CHECK_NUMBER_CDR(x) \
1856 Lisp_Object tmp = XCDR (x); \
1857 CHECK_NUMBER (tmp); \
1858 XSETCDR ((x), tmp); \
1861 #define CHECK_NATNUM_CAR(x) \
1863 Lisp_Object tmp = XCAR (x); \
1864 CHECK_NATNUM (tmp); \
1865 XSETCAR ((x), tmp); \
1868 #define CHECK_NATNUM_CDR(x) \
1870 Lisp_Object tmp = XCDR (x); \
1871 CHECK_NATNUM (tmp); \
1872 XSETCDR ((x), tmp); \
1875 /* Define a built-in function for calling from Lisp.
1876 `lname' should be the name to give the function in Lisp,
1877 as a null-terminated C string.
1878 `fnname' should be the name of the function in C.
1879 By convention, it starts with F.
1880 `sname' should be the name for the C constant structure
1881 that records information on this function for internal use.
1882 By convention, it should be the same as `fnname' but with S instead of F.
1883 It's too bad that C macros can't compute this from `fnname'.
1884 `minargs' should be a number, the minimum number of arguments allowed.
1885 `maxargs' should be a number, the maximum number of arguments allowed,
1886 or else MANY or UNEVALLED.
1887 MANY means pass a vector of evaluated arguments,
1888 in the form of an integer number-of-arguments
1889 followed by the address of a vector of Lisp_Objects
1890 which contains the argument values.
1891 UNEVALLED means pass the list of unevaluated arguments
1892 `intspec' says how interactive arguments are to be fetched.
1893 If the string starts with a `(', `intspec' is evaluated and the resulting
1894 list is the list of arguments.
1895 If it's a string that doesn't start with `(', the value should follow
1896 the one of the doc string for `interactive'.
1897 A null string means call interactively with no arguments.
1898 `doc' is documentation for the user. */
1900 /* This version of DEFUN declares a function prototype with the right
1901 arguments, so we can catch errors with maxargs at compile-time. */
1903 #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
1904 Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \
1905 static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
1906 { { (PVEC_SUBR << PSEUDOVECTOR_AREA_BITS) \
1907 | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)) }, \
1908 { (Lisp_Object (__cdecl *)(void))fnname }, \
1909 minargs, maxargs, lname, intspec, 0}; \
1911 #else /* not _MSC_VER */
1912 #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
1913 Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \
1914 static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
1915 { { PVEC_SUBR << PSEUDOVECTOR_AREA_BITS }, \
1916 { .a ## maxargs = fnname }, \
1917 minargs, maxargs, lname, intspec, 0}; \
1921 /* Note that the weird token-substitution semantics of ANSI C makes
1922 this work for MANY and UNEVALLED. */
1923 #define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *)
1924 #define DEFUN_ARGS_UNEVALLED (Lisp_Object)
1925 #define DEFUN_ARGS_0 (void)
1926 #define DEFUN_ARGS_1 (Lisp_Object)
1927 #define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object)
1928 #define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object)
1929 #define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
1930 #define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1932 #define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1933 Lisp_Object, Lisp_Object)
1934 #define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1935 Lisp_Object, Lisp_Object, Lisp_Object)
1936 #define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1937 Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
1939 /* Non-zero if OBJ is a Lisp function. */
1940 #define FUNCTIONP(OBJ) functionp(OBJ)
1943 is how we define the symbol for function `name' at start-up time. */
1944 extern void defsubr (struct Lisp_Subr
*);
1952 extern void defvar_lisp (struct Lisp_Objfwd
*, const char *, Lisp_Object
*);
1953 extern void defvar_lisp_nopro (struct Lisp_Objfwd
*, const char *, Lisp_Object
*);
1954 extern void defvar_bool (struct Lisp_Boolfwd
*, const char *, bool *);
1955 extern void defvar_int (struct Lisp_Intfwd
*, const char *, EMACS_INT
*);
1956 extern void defvar_kboard (struct Lisp_Kboard_Objfwd
*, const char *, int);
1958 /* Macros we use to define forwarded Lisp variables.
1959 These are used in the syms_of_FILENAME functions.
1961 An ordinary (not in buffer_defaults, per-buffer, or per-keyboard)
1962 lisp variable is actually a field in `struct emacs_globals'. The
1963 field's name begins with "f_", which is a convention enforced by
1964 these macros. Each such global has a corresponding #define in
1965 globals.h; the plain name should be used in the code.
1967 E.g., the global "cons_cells_consed" is declared as "int
1968 f_cons_cells_consed" in globals.h, but there is a define:
1970 #define cons_cells_consed globals.f_cons_cells_consed
1972 All C code uses the `cons_cells_consed' name. This is all done
1973 this way to support indirection for multi-threaded Emacs. */
1975 #define DEFVAR_LISP(lname, vname, doc) \
1977 static struct Lisp_Objfwd o_fwd; \
1978 defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \
1980 #define DEFVAR_LISP_NOPRO(lname, vname, doc) \
1982 static struct Lisp_Objfwd o_fwd; \
1983 defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \
1985 #define DEFVAR_BOOL(lname, vname, doc) \
1987 static struct Lisp_Boolfwd b_fwd; \
1988 defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \
1990 #define DEFVAR_INT(lname, vname, doc) \
1992 static struct Lisp_Intfwd i_fwd; \
1993 defvar_int (&i_fwd, lname, &globals.f_ ## vname); \
1996 #define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \
1998 static struct Lisp_Objfwd o_fwd; \
1999 defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \
2002 #define DEFVAR_KBOARD(lname, vname, doc) \
2004 static struct Lisp_Kboard_Objfwd ko_fwd; \
2005 defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \
2008 /* Save and restore the instruction and environment pointers,
2009 without affecting the signal mask. */
2012 typedef jmp_buf sys_jmp_buf
;
2013 # define sys_setjmp(j) _setjmp (j)
2014 # define sys_longjmp(j, v) _longjmp (j, v)
2015 #elif defined HAVE_SIGSETJMP
2016 typedef sigjmp_buf sys_jmp_buf
;
2017 # define sys_setjmp(j) sigsetjmp (j, 0)
2018 # define sys_longjmp(j, v) siglongjmp (j, v)
2020 /* A platform that uses neither _longjmp nor siglongjmp; assume
2021 longjmp does not affect the sigmask. */
2022 typedef jmp_buf sys_jmp_buf
;
2023 # define sys_setjmp(j) setjmp (j)
2024 # define sys_longjmp(j, v) longjmp (j, v)
2028 /* Structure for recording Lisp call stack for backtrace purposes. */
2030 /* The special binding stack holds the outer values of variables while
2031 they are bound by a function application or a let form, stores the
2032 code to be executed for Lisp unwind-protect forms, and stores the C
2033 functions to be called for record_unwind_protect.
2035 If func is non-zero, undoing this binding applies func to old_value;
2036 This implements record_unwind_protect.
2038 Otherwise, the element is a variable binding.
2040 If the symbol field is a symbol, it is an ordinary variable binding.
2042 Otherwise, it should be a structure (SYMBOL WHERE . CURRENT-BUFFER),
2043 which means having bound a local value while CURRENT-BUFFER was active.
2044 If WHERE is nil this means we saw the default value when binding SYMBOL.
2045 WHERE being a buffer or frame means we saw a buffer-local or frame-local
2046 value. Other values of WHERE mean an internal error. */
2048 typedef Lisp_Object (*specbinding_func
) (Lisp_Object
);
2052 Lisp_Object symbol
, old_value
;
2053 specbinding_func func
;
2054 Lisp_Object unused
; /* Dividing by 16 is faster than by 12. */
2057 extern struct specbinding
*specpdl
;
2058 extern struct specbinding
*specpdl_ptr
;
2059 extern ptrdiff_t specpdl_size
;
2061 #define SPECPDL_INDEX() (specpdl_ptr - specpdl)
2065 struct backtrace
*next
;
2066 Lisp_Object function
;
2067 Lisp_Object
*args
; /* Points to vector of args. */
2068 ptrdiff_t nargs
; /* Length of vector. */
2069 /* Nonzero means call value of debugger when done with this operation. */
2070 unsigned int debug_on_exit
: 1;
2073 extern struct backtrace
*backtrace_list
;
2075 /* Everything needed to describe an active condition case.
2077 Members are volatile if their values need to survive _longjmp when
2078 a 'struct handler' is a local variable. */
2081 /* The handler clauses and variable from the condition-case form. */
2082 /* For a handler set up in Lisp code, this is always a list.
2083 For an internal handler set up by internal_condition_case*,
2084 this can instead be the symbol t or `error'.
2085 t: handle all conditions.
2086 error: handle all conditions, and errors can run the debugger
2087 or display a backtrace. */
2088 Lisp_Object handler
;
2090 Lisp_Object
volatile var
;
2092 /* Fsignal stores here the condition-case clause that applies,
2093 and Fcondition_case thus knows which clause to run. */
2094 Lisp_Object
volatile chosen_clause
;
2096 /* Used to effect the longjump out to the handler. */
2097 struct catchtag
*tag
;
2099 /* The next enclosing handler. */
2100 struct handler
*next
;
2103 /* This structure helps implement the `catch' and `throw' control
2104 structure. A struct catchtag contains all the information needed
2105 to restore the state of the interpreter after a non-local jump.
2107 Handlers for error conditions (represented by `struct handler'
2108 structures) just point to a catch tag to do the cleanup required
2111 catchtag structures are chained together in the C calling stack;
2112 the `next' member points to the next outer catchtag.
2114 A call like (throw TAG VAL) searches for a catchtag whose `tag'
2115 member is TAG, and then unbinds to it. The `val' member is used to
2116 hold VAL while the stack is unwound; `val' is returned as the value
2119 All the other members are concerned with restoring the interpreter
2122 Members are volatile if their values need to survive _longjmp when
2123 a 'struct catchtag' is a local variable. */
2127 Lisp_Object
volatile val
;
2128 struct catchtag
*volatile next
;
2129 struct gcpro
*gcpro
;
2131 struct backtrace
*backlist
;
2132 struct handler
*handlerlist
;
2133 EMACS_INT lisp_eval_depth
;
2134 ptrdiff_t volatile pdlcount
;
2135 int poll_suppress_count
;
2136 int interrupt_input_blocked
;
2137 struct byte_stack
*byte_stack
;
2140 extern Lisp_Object memory_signal_data
;
2142 /* An address near the bottom of the stack.
2143 Tells GC how to save a copy of the stack. */
2144 extern char *stack_bottom
;
2146 /* Check quit-flag and quit if it is non-nil.
2147 Typing C-g does not directly cause a quit; it only sets Vquit_flag.
2148 So the program needs to do QUIT at times when it is safe to quit.
2149 Every loop that might run for a long time or might not exit
2150 ought to do QUIT at least once, at a safe place.
2151 Unless that is impossible, of course.
2152 But it is very desirable to avoid creating loops where QUIT is impossible.
2154 Exception: if you set immediate_quit to nonzero,
2155 then the handler that responds to the C-g does the quit itself.
2156 This is a good thing to do around a loop that has no side effects
2157 and (in particular) cannot call arbitrary Lisp code.
2159 If quit-flag is set to `kill-emacs' the SIGINT handler has received
2160 a request to exit Emacs when it is safe to do. */
2162 extern void process_pending_signals (void);
2163 extern bool volatile pending_signals
;
2165 extern void process_quit_flag (void);
2168 if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \
2169 process_quit_flag (); \
2170 else if (pending_signals) \
2171 process_pending_signals (); \
2175 /* Nonzero if ought to quit now. */
2177 #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit))
2179 extern Lisp_Object Vascii_downcase_table
;
2180 extern Lisp_Object Vascii_canon_table
;
2182 /* Structure for recording stack slots that need marking. */
2184 /* This is a chain of structures, each of which points at a Lisp_Object
2185 variable whose value should be marked in garbage collection.
2186 Normally every link of the chain is an automatic variable of a function,
2187 and its `val' points to some argument or local variable of the function.
2188 On exit to the function, the chain is set back to the value it had on entry.
2189 This way, no link remains in the chain when the stack frame containing the
2192 Every function that can call Feval must protect in this fashion all
2193 Lisp_Object variables whose contents will be used again. */
2195 extern struct gcpro
*gcprolist
;
2201 /* Address of first protected variable. */
2202 volatile Lisp_Object
*var
;
2204 /* Number of consecutive protected variables. */
2212 /* Values of GC_MARK_STACK during compilation:
2214 0 Use GCPRO as before
2215 1 Do the real thing, make GCPROs and UNGCPRO no-ops.
2216 2 Mark the stack, and check that everything GCPRO'd is
2218 3 Mark using GCPRO's, mark stack last, and count how many
2219 dead objects are kept alive. */
2222 #define GC_USE_GCPROS_AS_BEFORE 0
2223 #define GC_MAKE_GCPROS_NOOPS 1
2224 #define GC_MARK_STACK_CHECK_GCPROS 2
2225 #define GC_USE_GCPROS_CHECK_ZOMBIES 3
2227 #ifndef GC_MARK_STACK
2228 #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
2231 /* Whether we do the stack marking manually. */
2232 #define BYTE_MARK_STACK !(GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS \
2233 || GC_MARK_STACK == GC_MARK_STACK_CHECK_GCPROS)
2236 #if GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS
2238 /* Do something silly with gcproN vars just so gcc shuts up. */
2239 /* You get warnings from MIPSPro... */
2241 #define GCPRO1(varname) ((void) gcpro1)
2242 #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1)
2243 #define GCPRO3(varname1, varname2, varname3) \
2244 ((void) gcpro3, (void) gcpro2, (void) gcpro1)
2245 #define GCPRO4(varname1, varname2, varname3, varname4) \
2246 ((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
2247 #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
2248 ((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
2249 #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \
2250 ((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \
2252 #define UNGCPRO ((void) 0)
2254 #else /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
2258 #define GCPRO1(varname) \
2259 {gcpro1.next = gcprolist; gcpro1.var = &varname; gcpro1.nvars = 1; \
2260 gcprolist = &gcpro1; }
2262 #define GCPRO2(varname1, varname2) \
2263 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2264 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2265 gcprolist = &gcpro2; }
2267 #define GCPRO3(varname1, varname2, varname3) \
2268 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2269 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2270 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2271 gcprolist = &gcpro3; }
2273 #define GCPRO4(varname1, varname2, varname3, varname4) \
2274 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2275 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2276 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2277 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2278 gcprolist = &gcpro4; }
2280 #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
2281 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2282 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2283 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2284 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2285 gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \
2286 gcprolist = &gcpro5; }
2288 #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \
2289 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2290 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2291 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2292 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2293 gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \
2294 gcpro6.next = &gcpro5; gcpro6.var = &varname6; gcpro6.nvars = 1; \
2295 gcprolist = &gcpro6; }
2297 #define UNGCPRO (gcprolist = gcpro1.next)
2301 extern int gcpro_level
;
2303 #define GCPRO1(varname) \
2304 {gcpro1.next = gcprolist; gcpro1.var = &varname; gcpro1.nvars = 1; \
2305 gcpro1.level = gcpro_level++; \
2306 gcprolist = &gcpro1; }
2308 #define GCPRO2(varname1, varname2) \
2309 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2310 gcpro1.level = gcpro_level; \
2311 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2312 gcpro2.level = gcpro_level++; \
2313 gcprolist = &gcpro2; }
2315 #define GCPRO3(varname1, varname2, varname3) \
2316 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2317 gcpro1.level = gcpro_level; \
2318 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2319 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2320 gcpro3.level = gcpro_level++; \
2321 gcprolist = &gcpro3; }
2323 #define GCPRO4(varname1, varname2, varname3, varname4) \
2324 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2325 gcpro1.level = gcpro_level; \
2326 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2327 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2328 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2329 gcpro4.level = gcpro_level++; \
2330 gcprolist = &gcpro4; }
2332 #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
2333 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2334 gcpro1.level = gcpro_level; \
2335 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2336 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2337 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2338 gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \
2339 gcpro5.level = gcpro_level++; \
2340 gcprolist = &gcpro5; }
2342 #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \
2343 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
2344 gcpro1.level = gcpro_level; \
2345 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
2346 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
2347 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
2348 gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \
2349 gcpro6.next = &gcpro5; gcpro6.var = &varname6; gcpro6.nvars = 1; \
2350 gcpro6.level = gcpro_level++; \
2351 gcprolist = &gcpro6; }
2354 ((--gcpro_level != gcpro1.level) \
2355 ? (emacs_abort (), 0) \
2356 : ((gcprolist = gcpro1.next), 0))
2358 #endif /* DEBUG_GCPRO */
2359 #endif /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
2362 /* Evaluate expr, UNGCPRO, and then return the value of expr. */
2363 #define RETURN_UNGCPRO(expr) \
2366 Lisp_Object ret_ungc_val; \
2367 ret_ungc_val = (expr); \
2369 return ret_ungc_val; \
2373 /* Call staticpro (&var) to protect static variable `var'. */
2375 void staticpro (Lisp_Object
*);
2377 /* Declare a Lisp-callable function. The MAXARGS parameter has the same
2378 meaning as in the DEFUN macro, and is used to construct a prototype. */
2379 /* We can use the same trick as in the DEFUN macro to generate the
2380 appropriate prototype. */
2381 #define EXFUN(fnname, maxargs) \
2382 extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs
2384 /* Forward declarations for prototypes. */
2388 /* Simple access functions. */
2390 LISP_INLINE Lisp_Object
*
2391 aref_addr (Lisp_Object array
, ptrdiff_t idx
)
2393 return & XVECTOR (array
)->contents
[idx
];
2397 gc_aset (Lisp_Object array
, ptrdiff_t idx
, Lisp_Object val
)
2399 /* Like ASET, but also can be used in the garbage collector:
2400 sweep_weak_table calls set_hash_key etc. while the table is marked. */
2401 eassert (0 <= idx
&& idx
< (ASIZE (array
) & ~ARRAY_MARK_FLAG
));
2402 XVECTOR (array
)->contents
[idx
] = val
;
2405 /* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */
2408 vcopy (Lisp_Object v
, ptrdiff_t offset
, Lisp_Object
*args
, ptrdiff_t count
)
2410 eassert (0 <= offset
&& 0 <= count
&& offset
+ count
<= ASIZE (v
));
2411 memcpy (XVECTOR (v
)->contents
+ offset
, args
, count
* sizeof *args
);
2414 /* Functions to modify hash tables. */
2417 set_hash_key_and_value (struct Lisp_Hash_Table
*h
, Lisp_Object key_and_value
)
2419 h
->key_and_value
= key_and_value
;
2423 set_hash_key_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
2425 gc_aset (h
->key_and_value
, 2 * idx
, val
);
2429 set_hash_value_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
2431 gc_aset (h
->key_and_value
, 2 * idx
+ 1, val
);
2435 set_hash_next (struct Lisp_Hash_Table
*h
, Lisp_Object next
)
2441 set_hash_next_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
2443 gc_aset (h
->next
, idx
, val
);
2447 set_hash_hash (struct Lisp_Hash_Table
*h
, Lisp_Object hash
)
2453 set_hash_hash_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
2455 gc_aset (h
->hash
, idx
, val
);
2459 set_hash_index (struct Lisp_Hash_Table
*h
, Lisp_Object index
)
2465 set_hash_index_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
2467 gc_aset (h
->index
, idx
, val
);
2470 /* Use these functions to set Lisp_Object
2471 or pointer slots of struct Lisp_Symbol. */
2474 set_symbol_name (Lisp_Object sym
, Lisp_Object name
)
2476 XSYMBOL (sym
)->name
= name
;
2480 set_symbol_function (Lisp_Object sym
, Lisp_Object function
)
2482 XSYMBOL (sym
)->function
= function
;
2486 set_symbol_plist (Lisp_Object sym
, Lisp_Object plist
)
2488 XSYMBOL (sym
)->plist
= plist
;
2492 set_symbol_next (Lisp_Object sym
, struct Lisp_Symbol
*next
)
2494 XSYMBOL (sym
)->next
= next
;
2497 /* Buffer-local (also frame-local) variable access functions. */
2500 blv_found (struct Lisp_Buffer_Local_Value
*blv
)
2502 eassert (blv
->found
== !EQ (blv
->defcell
, blv
->valcell
));
2507 set_blv_found (struct Lisp_Buffer_Local_Value
*blv
, int found
)
2509 eassert (found
== !EQ (blv
->defcell
, blv
->valcell
));
2513 LISP_INLINE Lisp_Object
2514 blv_value (struct Lisp_Buffer_Local_Value
*blv
)
2516 return XCDR (blv
->valcell
);
2520 set_blv_value (struct Lisp_Buffer_Local_Value
*blv
, Lisp_Object val
)
2522 XSETCDR (blv
->valcell
, val
);
2526 set_blv_where (struct Lisp_Buffer_Local_Value
*blv
, Lisp_Object val
)
2532 set_blv_defcell (struct Lisp_Buffer_Local_Value
*blv
, Lisp_Object val
)
2538 set_blv_valcell (struct Lisp_Buffer_Local_Value
*blv
, Lisp_Object val
)
2543 /* Set overlay's property list. */
2546 set_overlay_plist (Lisp_Object overlay
, Lisp_Object plist
)
2548 XOVERLAY (overlay
)->plist
= plist
;
2551 /* Get text properties of S. */
2553 LISP_INLINE INTERVAL
2554 string_intervals (Lisp_Object s
)
2556 return XSTRING (s
)->intervals
;
2559 /* Set text properties of S to I. */
2562 set_string_intervals (Lisp_Object s
, INTERVAL i
)
2564 XSTRING (s
)->intervals
= i
;
2567 /* Set a Lisp slot in TABLE to VAL. Most code should use this instead
2568 of setting slots directly. */
2571 set_char_table_ascii (Lisp_Object table
, Lisp_Object val
)
2573 XCHAR_TABLE (table
)->ascii
= val
;
2576 set_char_table_defalt (Lisp_Object table
, Lisp_Object val
)
2578 XCHAR_TABLE (table
)->defalt
= val
;
2581 set_char_table_parent (Lisp_Object table
, Lisp_Object val
)
2583 XCHAR_TABLE (table
)->parent
= val
;
2586 set_char_table_purpose (Lisp_Object table
, Lisp_Object val
)
2588 XCHAR_TABLE (table
)->purpose
= val
;
2591 /* Set different slots in (sub)character tables. */
2594 set_char_table_extras (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
2596 eassert (0 <= idx
&& idx
< CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table
)));
2597 XCHAR_TABLE (table
)->extras
[idx
] = val
;
2601 set_char_table_contents (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
2603 eassert (0 <= idx
&& idx
< (1 << CHARTAB_SIZE_BITS_0
));
2604 XCHAR_TABLE (table
)->contents
[idx
] = val
;
2608 set_sub_char_table_contents (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
2610 XSUB_CHAR_TABLE (table
)->contents
[idx
] = val
;
2613 /* Defined in data.c. */
2614 extern Lisp_Object Qnil
, Qt
, Qquote
, Qlambda
, Qunbound
;
2615 extern Lisp_Object Qerror_conditions
, Qerror_message
, Qtop_level
;
2616 extern Lisp_Object Qerror
, Qquit
, Qargs_out_of_range
;
2617 extern Lisp_Object Qvoid_variable
, Qvoid_function
;
2618 extern Lisp_Object Qinvalid_read_syntax
;
2619 extern Lisp_Object Qinvalid_function
, Qwrong_number_of_arguments
, Qno_catch
;
2620 extern Lisp_Object Quser_error
, Qend_of_file
, Qarith_error
, Qmark_inactive
;
2621 extern Lisp_Object Qbeginning_of_buffer
, Qend_of_buffer
, Qbuffer_read_only
;
2622 extern Lisp_Object Qtext_read_only
;
2623 extern Lisp_Object Qinteractive_form
;
2624 extern Lisp_Object Qcircular_list
;
2625 extern Lisp_Object Qintegerp
, Qwholenump
, Qsymbolp
, Qlistp
, Qconsp
;
2626 extern Lisp_Object Qstringp
, Qarrayp
, Qsequencep
, Qbufferp
;
2627 extern Lisp_Object Qchar_or_string_p
, Qmarkerp
, Qinteger_or_marker_p
, Qvectorp
;
2628 extern Lisp_Object Qbuffer_or_string_p
;
2629 extern Lisp_Object Qfboundp
;
2630 extern Lisp_Object Qchar_table_p
, Qvector_or_char_table_p
;
2632 extern Lisp_Object Qcdr
;
2634 extern Lisp_Object Qrange_error
, Qoverflow_error
;
2636 extern Lisp_Object Qfloatp
;
2637 extern Lisp_Object Qnumberp
, Qnumber_or_marker_p
;
2639 extern Lisp_Object Qbuffer
, Qinteger
, Qsymbol
;
2641 extern Lisp_Object Qfont_spec
, Qfont_entity
, Qfont_object
;
2643 EXFUN (Fbyteorder
, 0) ATTRIBUTE_CONST
;
2645 /* Defined in data.c. */
2646 extern Lisp_Object
indirect_function (Lisp_Object
);
2647 extern Lisp_Object
find_symbol_value (Lisp_Object
);
2649 /* Convert the integer I to an Emacs representation, either the integer
2650 itself, or a cons of two or three integers, or if all else fails a float.
2651 I should not have side effects. */
2652 #define INTEGER_TO_CONS(i) \
2653 (! FIXNUM_OVERFLOW_P (i) \
2655 : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \
2656 || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \
2657 && FIXNUM_OVERFLOW_P ((i) >> 16)) \
2658 ? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \
2659 : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \
2660 || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \
2661 && FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \
2662 ? Fcons (make_number ((i) >> 16 >> 24), \
2663 Fcons (make_number ((i) >> 16 & 0xffffff), \
2664 make_number ((i) & 0xffff))) \
2667 /* Convert the Emacs representation CONS back to an integer of type
2668 TYPE, storing the result the variable VAR. Signal an error if CONS
2669 is not a valid representation or is out of range for TYPE. */
2670 #define CONS_TO_INTEGER(cons, type, var) \
2671 (TYPE_SIGNED (type) \
2672 ? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \
2673 : ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type))))
2674 extern intmax_t cons_to_signed (Lisp_Object
, intmax_t, intmax_t);
2675 extern uintmax_t cons_to_unsigned (Lisp_Object
, uintmax_t);
2677 extern struct Lisp_Symbol
*indirect_variable (struct Lisp_Symbol
*);
2678 extern _Noreturn
void args_out_of_range (Lisp_Object
, Lisp_Object
);
2679 extern _Noreturn
void args_out_of_range_3 (Lisp_Object
, Lisp_Object
,
2681 extern _Noreturn Lisp_Object
wrong_type_argument (Lisp_Object
, Lisp_Object
);
2682 extern Lisp_Object
do_symval_forwarding (union Lisp_Fwd
*);
2683 extern void set_internal (Lisp_Object
, Lisp_Object
, Lisp_Object
, bool);
2684 extern void syms_of_data (void);
2685 extern void swap_in_global_binding (struct Lisp_Symbol
*);
2687 /* Defined in cmds.c */
2688 extern void syms_of_cmds (void);
2689 extern void keys_of_cmds (void);
2691 /* Defined in coding.c. */
2692 extern Lisp_Object Qcharset
;
2693 extern Lisp_Object
detect_coding_system (const unsigned char *, ptrdiff_t,
2694 ptrdiff_t, bool, bool, Lisp_Object
);
2695 extern void init_coding (void);
2696 extern void init_coding_once (void);
2697 extern void syms_of_coding (void);
2699 /* Defined in character.c. */
2700 EXFUN (Fmax_char
, 0) ATTRIBUTE_CONST
;
2701 extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t);
2702 extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t);
2703 extern int multibyte_char_to_unibyte (int) ATTRIBUTE_CONST
;
2704 extern int multibyte_char_to_unibyte_safe (int) ATTRIBUTE_CONST
;
2705 extern void syms_of_character (void);
2707 /* Defined in charset.c. */
2708 extern void init_charset (void);
2709 extern void init_charset_once (void);
2710 extern void syms_of_charset (void);
2711 /* Structure forward declarations. */
2714 /* Defined in composite.c. */
2715 extern void syms_of_composite (void);
2717 /* Defined in syntax.c. */
2718 extern void init_syntax_once (void);
2719 extern void syms_of_syntax (void);
2721 /* Defined in fns.c. */
2722 extern Lisp_Object QCrehash_size
, QCrehash_threshold
;
2723 enum { NEXT_ALMOST_PRIME_LIMIT
= 11 };
2724 EXFUN (Fidentity
, 1) ATTRIBUTE_CONST
;
2725 extern EMACS_INT
next_almost_prime (EMACS_INT
) ATTRIBUTE_CONST
;
2726 extern Lisp_Object
larger_vector (Lisp_Object
, ptrdiff_t, ptrdiff_t);
2727 extern void sweep_weak_hash_tables (void);
2728 extern Lisp_Object Qcursor_in_echo_area
;
2729 extern Lisp_Object Qstring_lessp
;
2730 extern Lisp_Object QCsize
, QCtest
, QCweakness
, Qequal
, Qeq
;
2731 EMACS_UINT
hash_string (char const *, ptrdiff_t);
2732 EMACS_UINT
sxhash (Lisp_Object
, int);
2733 Lisp_Object
make_hash_table (struct hash_table_test
, Lisp_Object
, Lisp_Object
,
2734 Lisp_Object
, Lisp_Object
);
2735 ptrdiff_t hash_lookup (struct Lisp_Hash_Table
*, Lisp_Object
, EMACS_UINT
*);
2736 ptrdiff_t hash_put (struct Lisp_Hash_Table
*, Lisp_Object
, Lisp_Object
,
2738 extern struct hash_table_test hashtest_eql
, hashtest_equal
;
2740 extern Lisp_Object
substring_both (Lisp_Object
, ptrdiff_t, ptrdiff_t,
2741 ptrdiff_t, ptrdiff_t);
2742 extern Lisp_Object
do_yes_or_no_p (Lisp_Object
);
2743 extern Lisp_Object
concat2 (Lisp_Object
, Lisp_Object
);
2744 extern Lisp_Object
concat3 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
2745 extern Lisp_Object
nconc2 (Lisp_Object
, Lisp_Object
);
2746 extern Lisp_Object
assq_no_quit (Lisp_Object
, Lisp_Object
);
2747 extern Lisp_Object
assoc_no_quit (Lisp_Object
, Lisp_Object
);
2748 extern void clear_string_char_byte_cache (void);
2749 extern ptrdiff_t string_char_to_byte (Lisp_Object
, ptrdiff_t);
2750 extern ptrdiff_t string_byte_to_char (Lisp_Object
, ptrdiff_t);
2751 extern Lisp_Object
string_to_multibyte (Lisp_Object
);
2752 extern Lisp_Object
string_make_unibyte (Lisp_Object
);
2753 extern void syms_of_fns (void);
2755 /* Defined in floatfns.c. */
2756 extern double extract_float (Lisp_Object
);
2757 extern void syms_of_floatfns (void);
2758 extern Lisp_Object
fmod_float (Lisp_Object x
, Lisp_Object y
);
2760 /* Defined in fringe.c. */
2761 extern void syms_of_fringe (void);
2762 extern void init_fringe (void);
2763 #ifdef HAVE_WINDOW_SYSTEM
2764 extern void mark_fringe_data (void);
2765 extern void init_fringe_once (void);
2766 #endif /* HAVE_WINDOW_SYSTEM */
2768 /* Defined in image.c. */
2769 extern Lisp_Object QCascent
, QCmargin
, QCrelief
;
2770 extern Lisp_Object QCconversion
;
2771 extern int x_bitmap_mask (struct frame
*, ptrdiff_t);
2772 extern void reset_image_types (void);
2773 extern void syms_of_image (void);
2775 /* Defined in insdel.c. */
2776 extern Lisp_Object Qinhibit_modification_hooks
;
2777 extern void move_gap (ptrdiff_t);
2778 extern void move_gap_both (ptrdiff_t, ptrdiff_t);
2779 extern _Noreturn
void buffer_overflow (void);
2780 extern void make_gap (ptrdiff_t);
2781 extern ptrdiff_t copy_text (const unsigned char *, unsigned char *,
2782 ptrdiff_t, bool, bool);
2783 extern int count_combining_before (const unsigned char *,
2784 ptrdiff_t, ptrdiff_t, ptrdiff_t);
2785 extern int count_combining_after (const unsigned char *,
2786 ptrdiff_t, ptrdiff_t, ptrdiff_t);
2787 extern void insert (const char *, ptrdiff_t);
2788 extern void insert_and_inherit (const char *, ptrdiff_t);
2789 extern void insert_1 (const char *, ptrdiff_t, bool, bool, bool);
2790 extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t,
2792 extern void insert_from_gap (ptrdiff_t, ptrdiff_t);
2793 extern void insert_from_string (Lisp_Object
, ptrdiff_t, ptrdiff_t,
2794 ptrdiff_t, ptrdiff_t, bool);
2795 extern void insert_from_buffer (struct buffer
*, ptrdiff_t, ptrdiff_t, bool);
2796 extern void insert_char (int);
2797 extern void insert_string (const char *);
2798 extern void insert_before_markers (const char *, ptrdiff_t);
2799 extern void insert_before_markers_and_inherit (const char *, ptrdiff_t);
2800 extern void insert_from_string_before_markers (Lisp_Object
, ptrdiff_t,
2801 ptrdiff_t, ptrdiff_t,
2803 extern void del_range (ptrdiff_t, ptrdiff_t);
2804 extern Lisp_Object
del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool);
2805 extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool);
2806 extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool);
2807 extern Lisp_Object
del_range_2 (ptrdiff_t, ptrdiff_t,
2808 ptrdiff_t, ptrdiff_t, bool);
2809 extern void modify_region_1 (ptrdiff_t, ptrdiff_t, bool);
2810 extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
2811 extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t);
2812 extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t,
2813 ptrdiff_t, ptrdiff_t);
2814 extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t,
2815 ptrdiff_t, ptrdiff_t);
2816 extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object
, bool, bool, bool);
2817 extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
2818 const char *, ptrdiff_t, ptrdiff_t, bool);
2819 extern void syms_of_insdel (void);
2821 /* Defined in dispnew.c. */
2822 #if (defined PROFILING \
2823 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
2824 _Noreturn
void __executable_start (void);
2826 extern Lisp_Object selected_frame
;
2827 extern Lisp_Object Vwindow_system
;
2828 extern Lisp_Object
sit_for (Lisp_Object
, bool, int);
2829 extern void init_display (void);
2830 extern void syms_of_display (void);
2832 /* Defined in xdisp.c. */
2833 extern Lisp_Object Qinhibit_point_motion_hooks
;
2834 extern Lisp_Object Qinhibit_redisplay
, Qdisplay
;
2835 extern Lisp_Object Qmenu_bar_update_hook
;
2836 extern Lisp_Object Qwindow_scroll_functions
;
2837 extern Lisp_Object Qoverriding_local_map
, Qoverriding_terminal_local_map
;
2838 extern Lisp_Object Qimage
, Qtext
, Qboth
, Qboth_horiz
, Qtext_image_horiz
;
2839 extern Lisp_Object Qspace
, Qcenter
, QCalign_to
;
2840 extern Lisp_Object Qbar
, Qhbar
, Qbox
, Qhollow
;
2841 extern Lisp_Object Qleft_margin
, Qright_margin
;
2842 extern Lisp_Object Qglyphless_char
;
2843 extern Lisp_Object QCdata
, QCfile
;
2844 extern Lisp_Object QCmap
;
2845 extern Lisp_Object Qrisky_local_variable
;
2846 extern struct frame
*last_glyphless_glyph_frame
;
2847 extern int last_glyphless_glyph_face_id
;
2848 extern int last_glyphless_glyph_merged_face_id
;
2849 extern int noninteractive_need_newline
;
2850 extern Lisp_Object echo_area_buffer
[2];
2851 extern void add_to_log (const char *, Lisp_Object
, Lisp_Object
);
2852 extern void check_message_stack (void);
2853 extern void setup_echo_area_for_printing (int);
2854 extern bool push_message (void);
2855 extern Lisp_Object
pop_message_unwind (Lisp_Object
);
2856 extern Lisp_Object
restore_message_unwind (Lisp_Object
);
2857 extern void restore_message (void);
2858 extern Lisp_Object
current_message (void);
2859 extern void clear_message (int, int);
2860 extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
2861 extern void message1 (const char *);
2862 extern void message1_nolog (const char *);
2863 extern void message2 (const char *, ptrdiff_t, int);
2864 extern void message2_nolog (const char *, ptrdiff_t, int);
2865 extern void message3 (Lisp_Object
, ptrdiff_t, int);
2866 extern void message3_nolog (Lisp_Object
, ptrdiff_t, int);
2867 extern void message_dolog (const char *, ptrdiff_t, int, int);
2868 extern void message_with_string (const char *, Lisp_Object
, int);
2869 extern void message_log_maybe_newline (void);
2870 extern void update_echo_area (void);
2871 extern void truncate_echo_area (ptrdiff_t);
2872 extern void redisplay (void);
2873 extern void redisplay_preserve_echo_area (int);
2874 extern void prepare_menu_bars (void);
2876 void set_frame_cursor_types (struct frame
*, Lisp_Object
);
2877 extern void syms_of_xdisp (void);
2878 extern void init_xdisp (void);
2879 extern Lisp_Object
safe_eval (Lisp_Object
);
2880 extern int pos_visible_p (struct window
*, ptrdiff_t, int *,
2881 int *, int *, int *, int *, int *);
2883 /* Defined in xsettings.c. */
2884 extern void syms_of_xsettings (void);
2886 /* Defined in vm-limit.c. */
2887 extern void memory_warnings (void *, void (*warnfun
) (const char *));
2889 /* Defined in alloc.c. */
2890 extern void check_pure_size (void);
2891 extern void allocate_string_data (struct Lisp_String
*, EMACS_INT
, EMACS_INT
);
2892 extern void malloc_warning (const char *);
2893 extern _Noreturn
void memory_full (size_t);
2894 extern _Noreturn
void buffer_memory_full (ptrdiff_t);
2895 extern bool survives_gc_p (Lisp_Object
);
2896 extern void mark_object (Lisp_Object
);
2897 #if defined REL_ALLOC && !defined SYSTEM_MALLOC
2898 extern void refill_memory_reserve (void);
2900 extern const char *pending_malloc_warning
;
2901 extern Lisp_Object zero_vector
;
2902 extern Lisp_Object
*stack_base
;
2903 extern EMACS_INT consing_since_gc
;
2904 extern EMACS_INT gc_relative_threshold
;
2905 extern EMACS_INT memory_full_cons_threshold
;
2906 extern Lisp_Object
list1 (Lisp_Object
);
2907 extern Lisp_Object
list2 (Lisp_Object
, Lisp_Object
);
2908 extern Lisp_Object
list3 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
2909 extern Lisp_Object
list4 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
2910 extern Lisp_Object
list5 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
,
2912 enum constype
{CONSTYPE_HEAP
, CONSTYPE_PURE
};
2913 extern Lisp_Object
listn (enum constype
, ptrdiff_t, Lisp_Object
, ...);
2914 extern _Noreturn
void string_overflow (void);
2915 extern Lisp_Object
make_string (const char *, ptrdiff_t);
2916 extern Lisp_Object
make_formatted_string (char *, const char *, ...)
2917 ATTRIBUTE_FORMAT_PRINTF (2, 3);
2918 extern Lisp_Object
make_unibyte_string (const char *, ptrdiff_t);
2920 /* Make unibyte string from C string when the length isn't known. */
2922 LISP_INLINE Lisp_Object
2923 build_unibyte_string (const char *str
)
2925 return make_unibyte_string (str
, strlen (str
));
2928 extern Lisp_Object
make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t);
2929 extern Lisp_Object
make_event_array (int, Lisp_Object
*);
2930 extern Lisp_Object
make_uninit_string (EMACS_INT
);
2931 extern Lisp_Object
make_uninit_multibyte_string (EMACS_INT
, EMACS_INT
);
2932 extern Lisp_Object
make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t);
2933 extern Lisp_Object
make_specified_string (const char *,
2934 ptrdiff_t, ptrdiff_t, bool);
2935 extern Lisp_Object
make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool);
2936 extern Lisp_Object
make_pure_c_string (const char *, ptrdiff_t);
2938 /* Make a string allocated in pure space, use STR as string data. */
2940 LISP_INLINE Lisp_Object
2941 build_pure_c_string (const char *str
)
2943 return make_pure_c_string (str
, strlen (str
));
2946 /* Make a string from the data at STR, treating it as multibyte if the
2949 LISP_INLINE Lisp_Object
2950 build_string (const char *str
)
2952 return make_string (str
, strlen (str
));
2955 extern Lisp_Object
pure_cons (Lisp_Object
, Lisp_Object
);
2956 extern void make_byte_code (struct Lisp_Vector
*);
2957 extern Lisp_Object Qautomatic_gc
;
2958 extern Lisp_Object Qchar_table_extra_slots
;
2959 extern struct Lisp_Vector
*allocate_vector (EMACS_INT
);
2960 extern struct Lisp_Vector
*allocate_pseudovector (int, int, enum pvec_type
);
2961 #define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \
2963 allocate_pseudovector \
2964 (VECSIZE (typ), PSEUDOVECSIZE (typ, field), tag))
2965 extern struct Lisp_Hash_Table
*allocate_hash_table (void);
2966 extern struct window
*allocate_window (void);
2967 extern struct frame
*allocate_frame (void);
2968 extern struct Lisp_Process
*allocate_process (void);
2969 extern struct terminal
*allocate_terminal (void);
2970 extern bool gc_in_progress
;
2971 extern bool abort_on_gc
;
2972 extern Lisp_Object
make_float (double);
2973 extern void display_malloc_warning (void);
2974 extern ptrdiff_t inhibit_garbage_collection (void);
2975 extern Lisp_Object
make_save_value (void *, ptrdiff_t);
2976 extern void free_save_value (Lisp_Object
);
2977 extern Lisp_Object
build_overlay (Lisp_Object
, Lisp_Object
, Lisp_Object
);
2978 extern void free_marker (Lisp_Object
);
2979 extern void free_cons (struct Lisp_Cons
*);
2980 extern void init_alloc_once (void);
2981 extern void init_alloc (void);
2982 extern void syms_of_alloc (void);
2983 extern struct buffer
* allocate_buffer (void);
2984 extern int valid_lisp_object_p (Lisp_Object
);
2985 #ifdef GC_CHECK_CONS_LIST
2986 extern void check_cons_list (void);
2988 #define check_cons_list() ((void) 0)
2992 /* Defined in ralloc.c. */
2993 extern void *r_alloc (void **, size_t);
2994 extern void r_alloc_free (void **);
2995 extern void *r_re_alloc (void **, size_t);
2996 extern void r_alloc_reset_variable (void **, void **);
2997 extern void r_alloc_inhibit_buffer_relocation (int);
3000 /* Defined in chartab.c. */
3001 extern Lisp_Object
copy_char_table (Lisp_Object
);
3002 extern Lisp_Object
char_table_ref (Lisp_Object
, int);
3003 extern Lisp_Object
char_table_ref_and_range (Lisp_Object
, int,
3005 extern void char_table_set (Lisp_Object
, int, Lisp_Object
);
3006 extern void char_table_set_range (Lisp_Object
, int, int, Lisp_Object
);
3007 extern int char_table_translate (Lisp_Object
, int);
3008 extern void map_char_table (void (*) (Lisp_Object
, Lisp_Object
,
3010 Lisp_Object
, Lisp_Object
, Lisp_Object
);
3011 extern void map_char_table_for_charset (void (*c_function
) (Lisp_Object
, Lisp_Object
),
3012 Lisp_Object
, Lisp_Object
,
3013 Lisp_Object
, struct charset
*,
3014 unsigned, unsigned);
3015 extern Lisp_Object
uniprop_table (Lisp_Object
);
3016 extern void syms_of_chartab (void);
3018 /* Defined in print.c. */
3019 extern Lisp_Object Vprin1_to_string_buffer
;
3020 extern void debug_print (Lisp_Object
) EXTERNALLY_VISIBLE
;
3021 extern Lisp_Object Qstandard_output
;
3022 extern Lisp_Object Qexternal_debugging_output
;
3023 extern void temp_output_buffer_setup (const char *);
3024 extern int print_level
;
3025 extern Lisp_Object Qprint_escape_newlines
;
3026 extern void write_string (const char *, int);
3027 extern void print_error_message (Lisp_Object
, Lisp_Object
, const char *,
3029 extern Lisp_Object internal_with_output_to_temp_buffer
3030 (const char *, Lisp_Object (*) (Lisp_Object
), Lisp_Object
);
3031 enum FLOAT_TO_STRING_BUFSIZE
{ FLOAT_TO_STRING_BUFSIZE
= 350 };
3032 extern int float_to_string (char *, double);
3033 extern void syms_of_print (void);
3035 /* Defined in doprnt.c. */
3036 extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *,
3038 extern ptrdiff_t esprintf (char *, char const *, ...)
3039 ATTRIBUTE_FORMAT_PRINTF (2, 3);
3040 extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
3042 ATTRIBUTE_FORMAT_PRINTF (5, 6);
3043 extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
3044 char const *, va_list)
3045 ATTRIBUTE_FORMAT_PRINTF (5, 0);
3047 /* Defined in lread.c. */
3048 extern Lisp_Object Qvariable_documentation
, Qstandard_input
;
3049 extern Lisp_Object Qbackquote
, Qcomma
, Qcomma_at
, Qcomma_dot
, Qfunction
;
3050 extern Lisp_Object Qlexical_binding
;
3051 extern Lisp_Object
check_obarray (Lisp_Object
);
3052 extern Lisp_Object
intern_1 (const char *, ptrdiff_t);
3053 extern Lisp_Object
intern_c_string_1 (const char *, ptrdiff_t);
3054 extern Lisp_Object
oblookup (Lisp_Object
, const char *, ptrdiff_t, ptrdiff_t);
3055 #define LOADHIST_ATTACH(x) \
3057 if (initialized) Vcurrent_load_list = Fcons (x, Vcurrent_load_list); \
3059 extern int openp (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3060 Lisp_Object
*, Lisp_Object
);
3061 extern Lisp_Object
string_to_number (char const *, int, bool);
3062 extern void map_obarray (Lisp_Object
, void (*) (Lisp_Object
, Lisp_Object
),
3064 extern void dir_warning (const char *, Lisp_Object
);
3065 extern void close_load_descs (void);
3066 extern void init_obarray (void);
3067 extern void init_lread (void);
3068 extern void syms_of_lread (void);
3070 LISP_INLINE Lisp_Object
3071 intern (const char *str
)
3073 return intern_1 (str
, strlen (str
));
3076 LISP_INLINE Lisp_Object
3077 intern_c_string (const char *str
)
3079 return intern_c_string_1 (str
, strlen (str
));
3082 /* Defined in eval.c. */
3083 extern Lisp_Object Qautoload
, Qexit
, Qinteractive
, Qcommandp
, Qmacro
;
3084 extern Lisp_Object Qinhibit_quit
, Qinternal_interpreter_environment
, Qclosure
;
3085 extern Lisp_Object Qand_rest
;
3086 extern Lisp_Object Vautoload_queue
;
3087 extern Lisp_Object Vsignaling_function
;
3088 extern Lisp_Object inhibit_lisp_code
;
3090 extern struct catchtag
*catchlist
;
3091 extern struct handler
*handlerlist
;
3093 /* To run a normal hook, use the appropriate function from the list below.
3094 The calling convention:
3096 if (!NILP (Vrun_hooks))
3097 call1 (Vrun_hooks, Qmy_funny_hook);
3099 should no longer be used. */
3100 extern Lisp_Object Vrun_hooks
;
3101 extern void run_hook_with_args_2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3102 extern Lisp_Object
run_hook_with_args (ptrdiff_t nargs
, Lisp_Object
*args
,
3103 Lisp_Object (*funcall
)
3104 (ptrdiff_t nargs
, Lisp_Object
*args
));
3105 extern _Noreturn
void xsignal (Lisp_Object
, Lisp_Object
);
3106 extern _Noreturn
void xsignal0 (Lisp_Object
);
3107 extern _Noreturn
void xsignal1 (Lisp_Object
, Lisp_Object
);
3108 extern _Noreturn
void xsignal2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3109 extern _Noreturn
void xsignal3 (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3111 extern _Noreturn
void signal_error (const char *, Lisp_Object
);
3112 extern Lisp_Object
eval_sub (Lisp_Object form
);
3113 extern Lisp_Object
apply1 (Lisp_Object
, Lisp_Object
);
3114 extern Lisp_Object
call0 (Lisp_Object
);
3115 extern Lisp_Object
call1 (Lisp_Object
, Lisp_Object
);
3116 extern Lisp_Object
call2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3117 extern Lisp_Object
call3 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3118 extern Lisp_Object
call4 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3119 extern Lisp_Object
call5 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3120 extern Lisp_Object
call6 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3121 extern Lisp_Object
call7 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3122 extern Lisp_Object
internal_catch (Lisp_Object
, Lisp_Object (*) (Lisp_Object
), Lisp_Object
);
3123 extern Lisp_Object
internal_lisp_condition_case (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3124 extern Lisp_Object
internal_condition_case (Lisp_Object (*) (void), Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3125 extern Lisp_Object
internal_condition_case_1 (Lisp_Object (*) (Lisp_Object
), Lisp_Object
, Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3126 extern Lisp_Object
internal_condition_case_2 (Lisp_Object (*) (Lisp_Object
, Lisp_Object
), Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3127 extern Lisp_Object internal_condition_case_n
3128 (Lisp_Object (*) (ptrdiff_t, Lisp_Object
*), ptrdiff_t, Lisp_Object
*,
3129 Lisp_Object
, Lisp_Object (*) (Lisp_Object
, ptrdiff_t, Lisp_Object
*));
3130 extern void specbind (Lisp_Object
, Lisp_Object
);
3131 extern void record_unwind_protect (Lisp_Object (*) (Lisp_Object
), Lisp_Object
);
3132 extern Lisp_Object
unbind_to (ptrdiff_t, Lisp_Object
);
3133 extern _Noreturn
void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
3134 extern _Noreturn
void verror (const char *, va_list)
3135 ATTRIBUTE_FORMAT_PRINTF (1, 0);
3136 extern Lisp_Object
un_autoload (Lisp_Object
);
3137 extern Lisp_Object
call_debugger (Lisp_Object arg
);
3138 extern void init_eval_once (void);
3139 extern Lisp_Object
safe_call (ptrdiff_t, Lisp_Object
, ...);
3140 extern Lisp_Object
safe_call1 (Lisp_Object
, Lisp_Object
);
3141 extern Lisp_Object
safe_call2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3142 extern void init_eval (void);
3144 extern void mark_backtrace (void);
3146 extern void syms_of_eval (void);
3148 /* Defined in editfns.c. */
3149 extern Lisp_Object Qfield
;
3150 extern void insert1 (Lisp_Object
);
3151 extern Lisp_Object
format2 (const char *, Lisp_Object
, Lisp_Object
);
3152 extern Lisp_Object
save_excursion_save (void);
3153 extern Lisp_Object
save_restriction_save (void);
3154 extern Lisp_Object
save_excursion_restore (Lisp_Object
);
3155 extern Lisp_Object
save_restriction_restore (Lisp_Object
);
3156 extern _Noreturn
void time_overflow (void);
3157 extern Lisp_Object
make_buffer_string (ptrdiff_t, ptrdiff_t, bool);
3158 extern Lisp_Object
make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t,
3160 extern void init_editfns (void);
3161 extern void syms_of_editfns (void);
3162 extern void set_time_zone_rule (const char *);
3164 /* Defined in buffer.c. */
3165 extern bool mouse_face_overlay_overlaps (Lisp_Object
);
3166 extern _Noreturn
void nsberror (Lisp_Object
);
3167 extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t);
3168 extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t);
3169 extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t);
3170 extern void report_overlay_modification (Lisp_Object
, Lisp_Object
, bool,
3171 Lisp_Object
, Lisp_Object
, Lisp_Object
);
3172 extern bool overlay_touches_p (ptrdiff_t);
3173 extern Lisp_Object Vbuffer_alist
;
3174 extern Lisp_Object
set_buffer_if_live (Lisp_Object
);
3175 extern Lisp_Object
other_buffer_safely (Lisp_Object
);
3176 extern Lisp_Object Qpriority
, Qwindow
, Qbefore_string
, Qafter_string
;
3177 extern Lisp_Object
get_truename_buffer (Lisp_Object
);
3178 extern void init_buffer_once (void);
3179 extern void init_buffer (void);
3180 extern void syms_of_buffer (void);
3181 extern void keys_of_buffer (void);
3183 /* Defined in marker.c. */
3185 extern ptrdiff_t marker_position (Lisp_Object
);
3186 extern ptrdiff_t marker_byte_position (Lisp_Object
);
3187 extern void clear_charpos_cache (struct buffer
*);
3188 extern ptrdiff_t buf_charpos_to_bytepos (struct buffer
*, ptrdiff_t);
3189 extern ptrdiff_t buf_bytepos_to_charpos (struct buffer
*, ptrdiff_t);
3190 extern void unchain_marker (struct Lisp_Marker
*marker
);
3191 extern Lisp_Object
set_marker_restricted (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3192 extern Lisp_Object
set_marker_both (Lisp_Object
, Lisp_Object
, ptrdiff_t, ptrdiff_t);
3193 extern Lisp_Object
set_marker_restricted_both (Lisp_Object
, Lisp_Object
,
3194 ptrdiff_t, ptrdiff_t);
3195 extern Lisp_Object
build_marker (struct buffer
*, ptrdiff_t, ptrdiff_t);
3196 extern void syms_of_marker (void);
3198 /* Defined in fileio.c. */
3200 extern Lisp_Object Qfile_error
;
3201 extern Lisp_Object Qfile_exists_p
;
3202 extern Lisp_Object Qfile_directory_p
;
3203 extern Lisp_Object Qinsert_file_contents
;
3204 extern Lisp_Object Qfile_name_history
;
3205 extern Lisp_Object
expand_and_dir_to_file (Lisp_Object
, Lisp_Object
);
3206 EXFUN (Fread_file_name
, 6); /* Not a normal DEFUN. */
3207 extern Lisp_Object
close_file_unwind (Lisp_Object
);
3208 extern Lisp_Object
restore_point_unwind (Lisp_Object
);
3209 extern _Noreturn
void report_file_error (const char *, Lisp_Object
);
3210 extern bool internal_delete_file (Lisp_Object
);
3211 extern bool file_directory_p (const char *);
3212 extern bool file_accessible_directory_p (const char *);
3213 extern void syms_of_fileio (void);
3214 extern Lisp_Object
make_temp_name (Lisp_Object
, bool);
3215 extern Lisp_Object Qdelete_file
;
3216 extern bool check_existing (const char *);
3218 /* Defined in search.c. */
3219 extern void shrink_regexp_cache (void);
3220 extern void restore_search_regs (void);
3221 extern void record_unwind_save_match_data (void);
3222 struct re_registers
;
3223 extern struct re_pattern_buffer
*compile_pattern (Lisp_Object
,
3224 struct re_registers
*,
3225 Lisp_Object
, int, int);
3226 extern ptrdiff_t fast_string_match (Lisp_Object
, Lisp_Object
);
3227 extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object
, const char *,
3229 extern ptrdiff_t fast_string_match_ignore_case (Lisp_Object
, Lisp_Object
);
3230 extern ptrdiff_t fast_looking_at (Lisp_Object
, ptrdiff_t, ptrdiff_t,
3231 ptrdiff_t, ptrdiff_t, Lisp_Object
);
3232 extern ptrdiff_t scan_buffer (int, ptrdiff_t, ptrdiff_t, ptrdiff_t,
3234 extern EMACS_INT
scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
3236 extern ptrdiff_t find_next_newline (ptrdiff_t, int);
3237 extern ptrdiff_t find_next_newline_no_quit (ptrdiff_t, ptrdiff_t);
3238 extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t);
3239 extern void syms_of_search (void);
3240 extern void clear_regexp_cache (void);
3242 /* Defined in minibuf.c. */
3244 extern Lisp_Object Qcompletion_ignore_case
;
3245 extern Lisp_Object Vminibuffer_list
;
3246 extern Lisp_Object last_minibuf_string
;
3247 extern Lisp_Object
get_minibuffer (EMACS_INT
);
3248 extern void init_minibuf_once (void);
3249 extern void syms_of_minibuf (void);
3251 /* Defined in callint.c. */
3253 extern Lisp_Object Qminus
, Qplus
;
3254 extern Lisp_Object Qwhen
;
3255 extern Lisp_Object Qcall_interactively
, Qmouse_leave_buffer_hook
;
3256 extern void syms_of_callint (void);
3258 /* Defined in casefiddle.c. */
3260 extern Lisp_Object Qidentity
;
3261 extern void syms_of_casefiddle (void);
3262 extern void keys_of_casefiddle (void);
3264 /* Defined in casetab.c. */
3266 extern void init_casetab_once (void);
3267 extern void syms_of_casetab (void);
3269 /* Defined in keyboard.c. */
3271 extern Lisp_Object echo_message_buffer
;
3272 extern struct kboard
*echo_kboard
;
3273 extern void cancel_echoing (void);
3274 extern Lisp_Object Qdisabled
, QCfilter
;
3275 extern Lisp_Object Qup
, Qdown
, Qbottom
;
3276 extern Lisp_Object Qtop
;
3277 extern Lisp_Object last_undo_boundary
;
3278 extern bool input_pending
;
3279 extern Lisp_Object
menu_bar_items (Lisp_Object
);
3280 extern Lisp_Object
tool_bar_items (Lisp_Object
, int *);
3281 extern void discard_mouse_events (void);
3283 void handle_input_available_signal (int);
3285 extern Lisp_Object pending_funcalls
;
3286 extern bool detect_input_pending (void);
3287 extern bool detect_input_pending_ignore_squeezables (void);
3288 extern bool detect_input_pending_run_timers (bool);
3289 extern void safe_run_hooks (Lisp_Object
);
3290 extern void cmd_error_internal (Lisp_Object
, const char *);
3291 extern Lisp_Object
command_loop_1 (void);
3292 extern Lisp_Object
recursive_edit_1 (void);
3293 extern void record_auto_save (void);
3294 extern void force_auto_save_soon (void);
3295 extern void init_keyboard (void);
3296 extern void syms_of_keyboard (void);
3297 extern void keys_of_keyboard (void);
3299 /* Defined in indent.c. */
3300 extern ptrdiff_t current_column (void);
3301 extern void invalidate_current_column (void);
3302 extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT
);
3303 extern void syms_of_indent (void);
3305 /* Defined in frame.c. */
3306 extern Lisp_Object Qonly
, Qnone
;
3307 extern Lisp_Object Qvisible
;
3308 extern void store_frame_param (struct frame
*, Lisp_Object
, Lisp_Object
);
3309 extern void store_in_alist (Lisp_Object
*, Lisp_Object
, Lisp_Object
);
3310 extern Lisp_Object
do_switch_frame (Lisp_Object
, int, int, Lisp_Object
);
3312 extern Lisp_Object
get_frame_param (struct frame
*, Lisp_Object
);
3314 extern void frames_discard_buffer (Lisp_Object
);
3315 extern void syms_of_frame (void);
3317 /* Defined in emacs.c. */
3318 extern char **initial_argv
;
3319 extern int initial_argc
;
3320 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
3321 extern bool display_arg
;
3323 extern Lisp_Object
decode_env_path (const char *, const char *);
3324 extern Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
3325 extern Lisp_Object Qfile_name_handler_alist
;
3326 extern _Noreturn
void terminate_due_to_signal (int, int);
3327 extern Lisp_Object Qkill_emacs
;
3329 extern Lisp_Object Vlibrary_cache
;
3332 void fixup_locale (void);
3333 void synchronize_system_messages_locale (void);
3334 void synchronize_system_time_locale (void);
3336 #define setlocale(category, locale)
3337 #define fixup_locale()
3338 #define synchronize_system_messages_locale()
3339 #define synchronize_system_time_locale()
3341 extern void shut_down_emacs (int, Lisp_Object
);
3343 /* True means don't do interactive redisplay and don't change tty modes. */
3344 extern bool noninteractive
;
3346 /* True means remove site-lisp directories from load-path. */
3347 extern bool no_site_lisp
;
3349 /* Pipe used to send exit notification to the daemon parent at
3351 extern int daemon_pipe
[2];
3352 #define IS_DAEMON (daemon_pipe[1] != 0)
3354 /* True if handling a fatal error already. */
3355 extern bool fatal_error_in_progress
;
3357 /* True means don't do use window-system-specific display code. */
3358 extern bool inhibit_window_system
;
3359 /* True means that a filter or a sentinel is running. */
3360 extern bool running_asynch_code
;
3362 /* Defined in process.c. */
3363 extern Lisp_Object QCtype
, Qlocal
;
3364 extern Lisp_Object Qprocessp
;
3365 extern void kill_buffer_processes (Lisp_Object
);
3366 extern int wait_reading_process_output (intmax_t, int, int, bool,
3368 struct Lisp_Process
*,
3370 /* Max value for the first argument of wait_reading_process_output. */
3371 #if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5)
3372 /* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3.
3373 The bug merely causes a bogus warning, but the warning is annoying. */
3374 # define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX)
3376 # define WAIT_READING_MAX INTMAX_MAX
3378 extern void add_keyboard_wait_descriptor (int);
3379 extern void delete_keyboard_wait_descriptor (int);
3381 extern void add_gpm_wait_descriptor (int);
3382 extern void delete_gpm_wait_descriptor (int);
3384 extern void close_process_descs (void);
3385 extern void init_process_emacs (void);
3386 extern void syms_of_process (void);
3387 extern void setup_process_coding_systems (Lisp_Object
);
3392 extern int child_setup (int, int, int, char **, bool, Lisp_Object
);
3393 extern void init_callproc_1 (void);
3394 extern void init_callproc (void);
3395 extern void set_initial_environment (void);
3396 extern void syms_of_callproc (void);
3398 /* Defined in doc.c. */
3399 extern Lisp_Object Qfunction_documentation
;
3400 extern Lisp_Object
read_doc_string (Lisp_Object
);
3401 extern Lisp_Object
get_doc_string (Lisp_Object
, bool, bool);
3402 extern void syms_of_doc (void);
3403 extern int read_bytecode_char (bool);
3405 /* Defined in bytecode.c. */
3406 extern void syms_of_bytecode (void);
3407 extern struct byte_stack
*byte_stack_list
;
3409 extern void mark_byte_stack (void);
3411 extern void unmark_byte_stack (void);
3412 extern Lisp_Object
exec_byte_code (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3413 Lisp_Object
, ptrdiff_t, Lisp_Object
*);
3415 /* Defined in macros.c. */
3416 extern Lisp_Object Qexecute_kbd_macro
;
3417 extern void init_macros (void);
3418 extern void syms_of_macros (void);
3420 /* Defined in undo.c. */
3421 extern Lisp_Object Qapply
;
3422 extern Lisp_Object Qinhibit_read_only
;
3423 extern void truncate_undo_list (struct buffer
*);
3424 extern void record_marker_adjustment (Lisp_Object
, ptrdiff_t);
3425 extern void record_insert (ptrdiff_t, ptrdiff_t);
3426 extern void record_delete (ptrdiff_t, Lisp_Object
);
3427 extern void record_first_change (void);
3428 extern void record_change (ptrdiff_t, ptrdiff_t);
3429 extern void record_property_change (ptrdiff_t, ptrdiff_t,
3430 Lisp_Object
, Lisp_Object
,
3432 extern void syms_of_undo (void);
3433 /* Defined in textprop.c. */
3434 extern Lisp_Object Qfont
, Qmouse_face
;
3435 extern Lisp_Object Qinsert_in_front_hooks
, Qinsert_behind_hooks
;
3436 extern Lisp_Object Qfront_sticky
, Qrear_nonsticky
;
3437 extern Lisp_Object Qminibuffer_prompt
;
3439 extern void report_interval_modification (Lisp_Object
, Lisp_Object
);
3441 /* Defined in menu.c. */
3442 extern void syms_of_menu (void);
3444 /* Defined in xmenu.c. */
3445 extern void syms_of_xmenu (void);
3447 /* Defined in termchar.h. */
3448 struct tty_display_info
;
3450 /* Defined in termhooks.h. */
3453 /* Defined in sysdep.c. */
3454 #ifndef HAVE_GET_CURRENT_DIR_NAME
3455 extern char *get_current_dir_name (void);
3457 extern void stuff_char (char c
);
3458 extern void init_foreground_group (void);
3459 extern void init_sigio (int);
3460 extern void sys_subshell (void);
3461 extern void sys_suspend (void);
3462 extern void discard_tty_input (void);
3463 extern void init_sys_modes (struct tty_display_info
*);
3464 extern void reset_sys_modes (struct tty_display_info
*);
3465 extern void init_all_sys_modes (void);
3466 extern void reset_all_sys_modes (void);
3467 extern void flush_pending_output (int) ATTRIBUTE_CONST
;
3468 extern void child_setup_tty (int);
3469 extern void setup_pty (int);
3470 extern int set_window_size (int, int, int);
3471 extern EMACS_INT
get_random (void);
3472 extern void seed_random (void *, ptrdiff_t);
3473 extern void init_random (void);
3474 extern void emacs_backtrace (int);
3475 extern _Noreturn
void emacs_abort (void) NO_INLINE
;
3476 extern int emacs_open (const char *, int, int);
3477 extern int emacs_close (int);
3478 extern ptrdiff_t emacs_read (int, char *, ptrdiff_t);
3479 extern ptrdiff_t emacs_write (int, const char *, ptrdiff_t);
3480 enum { READLINK_BUFSIZE
= 1024 };
3481 extern char *emacs_readlink (const char *, char [READLINK_BUFSIZE
]);
3483 extern void unlock_all_files (void);
3484 extern void lock_file (Lisp_Object
);
3485 extern void unlock_file (Lisp_Object
);
3486 extern void unlock_buffer (struct buffer
*);
3487 extern void syms_of_filelock (void);
3489 /* Defined in sound.c. */
3490 extern void syms_of_sound (void);
3492 /* Defined in category.c. */
3493 extern void init_category_once (void);
3494 extern Lisp_Object
char_category_set (int);
3495 extern void syms_of_category (void);
3497 /* Defined in ccl.c. */
3498 extern void syms_of_ccl (void);
3500 /* Defined in dired.c. */
3501 extern void syms_of_dired (void);
3502 extern Lisp_Object
directory_files_internal (Lisp_Object
, Lisp_Object
,
3503 Lisp_Object
, Lisp_Object
,
3506 /* Defined in term.c. */
3507 extern int *char_ins_del_vector
;
3508 extern void syms_of_term (void);
3509 extern _Noreturn
void fatal (const char *msgid
, ...)
3510 ATTRIBUTE_FORMAT_PRINTF (1, 2);
3512 /* Defined in terminal.c. */
3513 extern void syms_of_terminal (void);
3515 /* Defined in font.c. */
3516 extern void syms_of_font (void);
3517 extern void init_font (void);
3519 #ifdef HAVE_WINDOW_SYSTEM
3520 /* Defined in fontset.c. */
3521 extern void syms_of_fontset (void);
3523 /* Defined in xfns.c, w32fns.c, or macfns.c. */
3524 extern Lisp_Object Qfont_param
;
3528 /* Defined on w32notify.c. */
3529 extern void syms_of_w32notify (void);
3532 /* Defined in inotify.c */
3534 extern void syms_of_inotify (void);
3537 /* Defined in xfaces.c. */
3538 extern Lisp_Object Qdefault
, Qtool_bar
, Qfringe
;
3539 extern Lisp_Object Qheader_line
, Qscroll_bar
, Qcursor
;
3540 extern Lisp_Object Qmode_line_inactive
;
3541 extern Lisp_Object Qface
;
3542 extern Lisp_Object Qnormal
;
3543 extern Lisp_Object QCfamily
, QCweight
, QCslant
;
3544 extern Lisp_Object QCheight
, QCname
, QCwidth
, QCforeground
, QCbackground
;
3545 extern Lisp_Object Qextra_light
, Qlight
, Qsemi_light
, Qsemi_bold
;
3546 extern Lisp_Object Qbold
, Qextra_bold
, Qultra_bold
;
3547 extern Lisp_Object Qoblique
, Qitalic
;
3548 extern Lisp_Object Vface_alternative_font_family_alist
;
3549 extern Lisp_Object Vface_alternative_font_registry_alist
;
3550 extern void syms_of_xfaces (void);
3552 #ifdef HAVE_X_WINDOWS
3553 /* Defined in xfns.c. */
3554 extern void syms_of_xfns (void);
3556 /* Defined in xsmfns.c. */
3557 extern void syms_of_xsmfns (void);
3559 /* Defined in xselect.c. */
3560 extern void syms_of_xselect (void);
3562 /* Defined in xterm.c. */
3563 extern void syms_of_xterm (void);
3564 #endif /* HAVE_X_WINDOWS */
3566 #ifdef HAVE_WINDOW_SYSTEM
3567 /* Defined in xterm.c, nsterm.m, w32term.c. */
3568 extern char *x_get_keysym_name (int);
3569 #endif /* HAVE_WINDOW_SYSTEM */
3572 /* Defined in xml.c. */
3573 extern void syms_of_xml (void);
3574 extern void xml_cleanup_parser (void);
3578 /* Defined in (x|w32)fns.c, nsfns.m... */
3579 extern int have_menus_p (void);
3583 /* Defined in dbusbind.c. */
3584 void syms_of_dbusbind (void);
3588 /* Defined in profiler.c. */
3589 extern bool profiler_memory_running
;
3590 extern void malloc_probe (size_t);
3591 extern void syms_of_profiler (void);
3595 /* Defined in msdos.c, w32.c. */
3596 extern char *emacs_root_dir (void);
3599 /* True means Emacs has already been initialized.
3600 Used during startup to detect startup of dumped Emacs. */
3601 extern bool initialized
;
3603 /* True means ^G can quit instantly. */
3604 extern bool immediate_quit
;
3606 extern void *xmalloc (size_t);
3607 extern void *xzalloc (size_t);
3608 extern void *xrealloc (void *, size_t);
3609 extern void xfree (void *);
3610 extern void *xnmalloc (ptrdiff_t, ptrdiff_t);
3611 extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t);
3612 extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t);
3614 extern char *xstrdup (const char *);
3615 extern void xputenv (const char *);
3617 extern char *egetenv (const char *);
3619 /* Set up the name of the machine we're running on. */
3620 extern void init_system_name (void);
3622 /* We used to use `abs', but that clashes with system headers on some
3623 platforms, and using a name reserved by Standard C is a bad idea
3626 #define eabs(x) ((x) < 0 ? -(x) : (x))
3629 /* Return a fixnum or float, depending on whether VAL fits in a Lisp
3632 #define make_fixnum_or_float(val) \
3633 (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val))
3635 /* SAFE_ALLOCA normally allocates memory on the stack, but if size is
3636 larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */
3638 enum MAX_ALLOCA
{ MAX_ALLOCA
= 16 * 1024 };
3640 extern Lisp_Object
safe_alloca_unwind (Lisp_Object
);
3641 extern void *record_xmalloc (size_t);
3643 #define USE_SAFE_ALLOCA \
3644 ptrdiff_t sa_count = SPECPDL_INDEX (); bool sa_must_free = 0
3646 /* SAFE_ALLOCA allocates a simple buffer. */
3648 #define SAFE_ALLOCA(size) ((size) < MAX_ALLOCA \
3650 : (sa_must_free = 1, record_xmalloc (size)))
3652 /* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER *
3653 NITEMS items, each of the same type as *BUF. MULTIPLIER must
3654 positive. The code is tuned for MULTIPLIER being a constant. */
3656 #define SAFE_NALLOCA(buf, multiplier, nitems) \
3658 if ((nitems) <= MAX_ALLOCA / sizeof *(buf) / (multiplier)) \
3659 (buf) = alloca (sizeof *(buf) * (multiplier) * (nitems)); \
3662 (buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \
3664 record_unwind_protect (safe_alloca_unwind, \
3665 make_save_value (buf, 0)); \
3669 /* SAFE_FREE frees xmalloced memory and enables GC as needed. */
3671 #define SAFE_FREE() \
3673 if (sa_must_free) { \
3675 unbind_to (sa_count, Qnil); \
3680 /* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */
3682 #define SAFE_ALLOCA_LISP(buf, nelt) \
3684 if ((nelt) < MAX_ALLOCA / word_size) \
3685 buf = alloca ((nelt) * word_size); \
3686 else if ((nelt) < min (PTRDIFF_MAX, SIZE_MAX) / word_size) \
3689 buf = xmalloc ((nelt) * word_size); \
3690 arg_ = make_save_value (buf, nelt); \
3691 XSAVE_VALUE (arg_)->dogc = 1; \
3693 record_unwind_protect (safe_alloca_unwind, arg_); \
3696 memory_full (SIZE_MAX); \
3700 #include "globals.h"
3702 /* Check whether it's time for GC, and run it if so. */
3707 if ((consing_since_gc
> gc_cons_threshold
3708 && consing_since_gc
> gc_relative_threshold
)
3709 || (!NILP (Vmemory_full
)
3710 && consing_since_gc
> memory_full_cons_threshold
))
3711 Fgarbage_collect ();
3715 functionp (Lisp_Object object
)
3717 if (SYMBOLP (object
) && !NILP (Ffboundp (object
)))
3719 object
= Findirect_function (object
, Qt
);
3721 if (CONSP (object
) && EQ (XCAR (object
), Qautoload
))
3723 /* Autoloaded symbols are functions, except if they load
3724 macros or keymaps. */
3726 for (i
= 0; i
< 4 && CONSP (object
); i
++)
3727 object
= XCDR (object
);
3729 return ! (CONSP (object
) && !NILP (XCAR (object
)));
3734 return XSUBR (object
)->max_args
!= UNEVALLED
;
3735 else if (COMPILEDP (object
))
3737 else if (CONSP (object
))
3739 Lisp_Object car
= XCAR (object
);
3740 return EQ (car
, Qlambda
) || EQ (car
, Qclosure
);
3748 #endif /* EMACS_LISP_H */