1 /* Fundamental definitions for GNU Emacs Lisp interpreter.
3 Copyright (C) 1985-1987, 1993-1995, 1997-2015 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 a TYPE constant ID as an externally visible name. Use like this:
39 DEFINE_GDB_SYMBOL_BEGIN (TYPE, ID)
40 # define ID (some integer preprocessor expression of type TYPE)
41 DEFINE_GDB_SYMBOL_END (ID)
43 This hack is for the benefit of compilers that do not make macro
44 definitions or enums visible to the debugger. It's used for symbols
45 that .gdbinit needs. */
47 #define DECLARE_GDB_SYM(type, id) type const id EXTERNALLY_VISIBLE
49 # define DEFINE_GDB_SYMBOL_BEGIN(type, id) DECLARE_GDB_SYM (type, id)
50 # define DEFINE_GDB_SYMBOL_END(id) = id;
52 # define DEFINE_GDB_SYMBOL_BEGIN(type, id) extern DECLARE_GDB_SYM (type, id)
53 # define DEFINE_GDB_SYMBOL_END(val) ;
56 /* The ubiquitous max and min macros. */
59 #define max(a, b) ((a) > (b) ? (a) : (b))
60 #define min(a, b) ((a) < (b) ? (a) : (b))
62 /* Number of elements in an array. */
63 #define ARRAYELTS(arr) (sizeof (arr) / sizeof (arr)[0])
65 /* Number of bits in a Lisp_Object tag. */
66 DEFINE_GDB_SYMBOL_BEGIN (int, GCTYPEBITS
)
68 DEFINE_GDB_SYMBOL_END (GCTYPEBITS
)
70 /* The number of bits needed in an EMACS_INT over and above the number
71 of bits in a pointer. This is 0 on systems where:
72 1. We can specify multiple-of-8 alignment on static variables.
73 2. We know malloc returns a multiple of 8. */
74 #if (defined alignas \
75 && (defined GNU_MALLOC || defined DOUG_LEA_MALLOC || defined __GLIBC__ \
76 || defined DARWIN_OS || defined __sun || defined __MINGW32__ \
78 # define NONPOINTER_BITS 0
80 # define NONPOINTER_BITS GCTYPEBITS
83 /* EMACS_INT - signed integer wide enough to hold an Emacs value
84 EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if
85 pI - printf length modifier for EMACS_INT
86 EMACS_UINT - unsigned variant of EMACS_INT */
89 # error "INTPTR_MAX misconfigured"
90 # elif INTPTR_MAX <= INT_MAX >> NONPOINTER_BITS && !defined WIDE_EMACS_INT
91 typedef int EMACS_INT
;
92 typedef unsigned int EMACS_UINT
;
93 # define EMACS_INT_MAX INT_MAX
95 # elif INTPTR_MAX <= LONG_MAX >> NONPOINTER_BITS && !defined WIDE_EMACS_INT
96 typedef long int EMACS_INT
;
97 typedef unsigned long EMACS_UINT
;
98 # define EMACS_INT_MAX LONG_MAX
100 /* Check versus LLONG_MAX, not LLONG_MAX >> NONPOINTER_BITS.
101 In theory this is not safe, but in practice it seems to be OK. */
102 # elif INTPTR_MAX <= LLONG_MAX
103 typedef long long int EMACS_INT
;
104 typedef unsigned long long int EMACS_UINT
;
105 # define EMACS_INT_MAX LLONG_MAX
108 # error "INTPTR_MAX too large"
112 /* Number of bits to put in each character in the internal representation
113 of bool vectors. This should not vary across implementations. */
114 enum { BOOL_VECTOR_BITS_PER_CHAR
=
115 #define BOOL_VECTOR_BITS_PER_CHAR 8
116 BOOL_VECTOR_BITS_PER_CHAR
119 /* An unsigned integer type representing a fixed-length bit sequence,
120 suitable for bool vector words, GC mark bits, etc. Normally it is size_t
121 for speed, but it is unsigned char on weird platforms. */
122 #if BOOL_VECTOR_BITS_PER_CHAR == CHAR_BIT
123 typedef size_t bits_word
;
124 # define BITS_WORD_MAX SIZE_MAX
125 enum { BITS_PER_BITS_WORD
= CHAR_BIT
* sizeof (bits_word
) };
127 typedef unsigned char bits_word
;
128 # define BITS_WORD_MAX ((1u << BOOL_VECTOR_BITS_PER_CHAR) - 1)
129 enum { BITS_PER_BITS_WORD
= BOOL_VECTOR_BITS_PER_CHAR
};
131 verify (BITS_WORD_MAX
>> (BITS_PER_BITS_WORD
- 1) == 1);
133 /* Number of bits in some machine integer types. */
136 BITS_PER_CHAR
= CHAR_BIT
,
137 BITS_PER_SHORT
= CHAR_BIT
* sizeof (short),
138 BITS_PER_LONG
= CHAR_BIT
* sizeof (long int),
139 BITS_PER_EMACS_INT
= CHAR_BIT
* sizeof (EMACS_INT
)
142 /* printmax_t and uprintmax_t are types for printing large integers.
143 These are the widest integers that are supported for printing.
144 pMd etc. are conversions for printing them.
145 On C99 hosts, there's no problem, as even the widest integers work.
146 Fall back on EMACS_INT on pre-C99 hosts. */
148 typedef intmax_t printmax_t
;
149 typedef uintmax_t uprintmax_t
;
153 typedef EMACS_INT printmax_t
;
154 typedef EMACS_UINT uprintmax_t
;
159 /* Use pD to format ptrdiff_t values, which suffice for indexes into
160 buffers and strings. Emacs never allocates objects larger than
161 PTRDIFF_MAX bytes, as they cause problems with pointer subtraction.
162 In C99, pD can always be "t"; configure it here for the sake of
163 pre-C99 libraries such as glibc 2.0 and Solaris 8. */
164 #if PTRDIFF_MAX == INT_MAX
166 #elif PTRDIFF_MAX == LONG_MAX
168 #elif PTRDIFF_MAX == LLONG_MAX
174 /* Extra internal type checking? */
176 /* Define Emacs versions of <assert.h>'s 'assert (COND)' and <verify.h>'s
177 'assume (COND)'. COND should be free of side effects, as it may or
178 may not be evaluated.
180 'eassert (COND)' checks COND at runtime if ENABLE_CHECKING is
181 defined and suppress_checking is false, and does nothing otherwise.
182 Emacs dies if COND is checked and is false. The suppress_checking
183 variable is initialized to 0 in alloc.c. Set it to 1 using a
184 debugger to temporarily disable aborting on detected internal
185 inconsistencies or error conditions.
187 In some cases, a good compiler may be able to optimize away the
188 eassert macro even if ENABLE_CHECKING is true, e.g., if XSTRING (x)
189 uses eassert to test STRINGP (x), but a particular use of XSTRING
190 is invoked only after testing that STRINGP (x) is true, making the
193 eassume is like eassert except that it also causes the compiler to
194 assume that COND is true afterwards, regardless of whether runtime
195 checking is enabled. This can improve performance in some cases,
196 though it can degrade performance in others. It's often suboptimal
197 for COND to call external functions or access volatile storage. */
199 #ifndef ENABLE_CHECKING
200 # define eassert(cond) ((void) (false && (cond))) /* Check COND compiles. */
201 # define eassume(cond) assume (cond)
202 #else /* ENABLE_CHECKING */
204 extern _Noreturn
void die (const char *, const char *, int);
206 extern bool suppress_checking EXTERNALLY_VISIBLE
;
208 # define eassert(cond) \
209 (suppress_checking || (cond) \
211 : die (# cond, __FILE__, __LINE__))
212 # define eassume(cond) \
217 : die (# cond, __FILE__, __LINE__))
218 #endif /* ENABLE_CHECKING */
221 /* Use the configure flag --enable-check-lisp-object-type to make
222 Lisp_Object use a struct type instead of the default int. The flag
223 causes CHECK_LISP_OBJECT_TYPE to be defined. */
225 /***** Select the tagging scheme. *****/
226 /* The following option controls the tagging scheme:
227 - USE_LSB_TAG means that we can assume the least 3 bits of pointers are
228 always 0, and we can thus use them to hold tag bits, without
229 restricting our addressing space.
231 If ! USE_LSB_TAG, then use the top 3 bits for tagging, thus
232 restricting our possible address range.
234 USE_LSB_TAG not only requires the least 3 bits of pointers returned by
235 malloc to be 0 but also needs to be able to impose a mult-of-8 alignment
236 on the few static Lisp_Objects used: lispsym, all the defsubr, and
237 the two special buffers buffer_defaults and buffer_local_symbols. */
241 /* 2**GCTYPEBITS. This must be a macro that expands to a literal
242 integer constant, for MSVC. */
243 #define GCALIGNMENT 8
245 /* Number of bits in a Lisp_Object value, not counting the tag. */
246 VALBITS
= BITS_PER_EMACS_INT
- GCTYPEBITS
,
248 /* Number of bits in a Lisp fixnum tag. */
249 INTTYPEBITS
= GCTYPEBITS
- 1,
251 /* Number of bits in a Lisp fixnum value, not counting the tag. */
252 FIXNUM_BITS
= VALBITS
+ 1
255 #if GCALIGNMENT != 1 << GCTYPEBITS
256 # error "GCALIGNMENT and GCTYPEBITS are inconsistent"
259 /* The maximum value that can be stored in a EMACS_INT, assuming all
260 bits other than the type bits contribute to a nonnegative signed value.
261 This can be used in #if, e.g., '#if USB_TAG' below expands to an
262 expression involving VAL_MAX. */
263 #define VAL_MAX (EMACS_INT_MAX >> (GCTYPEBITS - 1))
265 /* Whether the least-significant bits of an EMACS_INT contain the tag.
266 On hosts where pointers-as-ints do not exceed VAL_MAX / 2, USE_LSB_TAG is:
267 a. unnecessary, because the top bits of an EMACS_INT are unused, and
268 b. slower, because it typically requires extra masking.
269 So, USE_LSB_TAG is true only on hosts where it might be useful. */
270 DEFINE_GDB_SYMBOL_BEGIN (bool, USE_LSB_TAG
)
271 #define USE_LSB_TAG (VAL_MAX / 2 < INTPTR_MAX)
272 DEFINE_GDB_SYMBOL_END (USE_LSB_TAG
)
274 #if !USE_LSB_TAG && !defined WIDE_EMACS_INT
275 # error "USE_LSB_TAG not supported on this platform; please report this." \
276 "Try 'configure --with-wide-int' to work around the problem."
281 # define alignas(alignment) /* empty */
283 # error "USE_LSB_TAG requires alignas"
287 #ifdef HAVE_STRUCT_ATTRIBUTE_ALIGNED
288 # define GCALIGNED __attribute__ ((aligned (GCALIGNMENT)))
290 # define GCALIGNED /* empty */
293 /* Some operations are so commonly executed that they are implemented
294 as macros, not functions, because otherwise runtime performance would
295 suffer too much when compiling with GCC without optimization.
296 There's no need to inline everything, just the operations that
297 would otherwise cause a serious performance problem.
299 For each such operation OP, define a macro lisp_h_OP that contains
300 the operation's implementation. That way, OP can be implemented
301 via a macro definition like this:
303 #define OP(x) lisp_h_OP (x)
305 and/or via a function definition like this:
307 LISP_MACRO_DEFUN (OP, Lisp_Object, (Lisp_Object x), (x))
309 which macro-expands to this:
311 Lisp_Object (OP) (Lisp_Object x) { return lisp_h_OP (x); }
313 without worrying about the implementations diverging, since
314 lisp_h_OP defines the actual implementation. The lisp_h_OP macros
315 are intended to be private to this include file, and should not be
318 FIXME: Remove the lisp_h_OP macros, and define just the inline OP
319 functions, once most developers have access to GCC 4.8 or later and
320 can use "gcc -Og" to debug. Maybe in the year 2016. See
323 Commentary for these macros can be found near their corresponding
326 #if CHECK_LISP_OBJECT_TYPE
327 # define lisp_h_XLI(o) ((o).i)
328 # define lisp_h_XIL(i) ((Lisp_Object) { i })
330 # define lisp_h_XLI(o) (o)
331 # define lisp_h_XIL(i) (i)
333 #define lisp_h_CHECK_LIST_CONS(x, y) CHECK_TYPE (CONSP (x), Qlistp, y)
334 #define lisp_h_CHECK_NUMBER(x) CHECK_TYPE (INTEGERP (x), Qintegerp, x)
335 #define lisp_h_CHECK_SYMBOL(x) CHECK_TYPE (SYMBOLP (x), Qsymbolp, x)
336 #define lisp_h_CHECK_TYPE(ok, predicate, x) \
337 ((ok) ? (void) 0 : (void) wrong_type_argument (predicate, x))
338 #define lisp_h_CONSP(x) (XTYPE (x) == Lisp_Cons)
339 #define lisp_h_EQ(x, y) (XLI (x) == XLI (y))
340 #define lisp_h_FLOATP(x) (XTYPE (x) == Lisp_Float)
341 #define lisp_h_INTEGERP(x) ((XTYPE (x) & (Lisp_Int0 | ~Lisp_Int1)) == Lisp_Int0)
342 #define lisp_h_MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker)
343 #define lisp_h_MISCP(x) (XTYPE (x) == Lisp_Misc)
344 #define lisp_h_NILP(x) EQ (x, Qnil)
345 #define lisp_h_SET_SYMBOL_VAL(sym, v) \
346 (eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value = (v))
347 #define lisp_h_SYMBOL_CONSTANT_P(sym) (XSYMBOL (sym)->constant)
348 #define lisp_h_SYMBOL_VAL(sym) \
349 (eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value)
350 #define lisp_h_SYMBOLP(x) (XTYPE (x) == Lisp_Symbol)
351 #define lisp_h_VECTORLIKEP(x) (XTYPE (x) == Lisp_Vectorlike)
352 #define lisp_h_XCAR(c) XCONS (c)->car
353 #define lisp_h_XCDR(c) XCONS (c)->u.cdr
354 #define lisp_h_XCONS(a) \
355 (eassert (CONSP (a)), (struct Lisp_Cons *) XUNTAG (a, Lisp_Cons))
356 #define lisp_h_XHASH(a) XUINT (a)
357 #define lisp_h_XPNTR(a) \
358 (SYMBOLP (a) ? XSYMBOL (a) : (void *) ((intptr_t) (XLI (a) & VALMASK)))
359 #ifndef GC_CHECK_CONS_LIST
360 # define lisp_h_check_cons_list() ((void) 0)
363 # define lisp_h_make_number(n) \
364 XIL ((EMACS_INT) (((EMACS_UINT) (n) << INTTYPEBITS) + Lisp_Int0))
365 # define lisp_h_XFASTINT(a) XINT (a)
366 # define lisp_h_XINT(a) (XLI (a) >> INTTYPEBITS)
367 # define lisp_h_XSYMBOL(a) \
368 (eassert (SYMBOLP (a)), \
369 (struct Lisp_Symbol *) ((uintptr_t) XLI (a) - Lisp_Symbol \
371 # define lisp_h_XTYPE(a) ((enum Lisp_Type) (XLI (a) & ~VALMASK))
372 # define lisp_h_XUNTAG(a, type) ((void *) (intptr_t) (XLI (a) - (type)))
375 /* When compiling via gcc -O0, define the key operations as macros, as
376 Emacs is too slow otherwise. To disable this optimization, compile
377 with -DINLINING=false. */
378 #if (defined __NO_INLINE__ \
379 && ! defined __OPTIMIZE__ && ! defined __OPTIMIZE_SIZE__ \
380 && ! (defined INLINING && ! INLINING))
381 # define XLI(o) lisp_h_XLI (o)
382 # define XIL(i) lisp_h_XIL (i)
383 # define CHECK_LIST_CONS(x, y) lisp_h_CHECK_LIST_CONS (x, y)
384 # define CHECK_NUMBER(x) lisp_h_CHECK_NUMBER (x)
385 # define CHECK_SYMBOL(x) lisp_h_CHECK_SYMBOL (x)
386 # define CHECK_TYPE(ok, predicate, x) lisp_h_CHECK_TYPE (ok, predicate, x)
387 # define CONSP(x) lisp_h_CONSP (x)
388 # define EQ(x, y) lisp_h_EQ (x, y)
389 # define FLOATP(x) lisp_h_FLOATP (x)
390 # define INTEGERP(x) lisp_h_INTEGERP (x)
391 # define MARKERP(x) lisp_h_MARKERP (x)
392 # define MISCP(x) lisp_h_MISCP (x)
393 # define NILP(x) lisp_h_NILP (x)
394 # define SET_SYMBOL_VAL(sym, v) lisp_h_SET_SYMBOL_VAL (sym, v)
395 # define SYMBOL_CONSTANT_P(sym) lisp_h_SYMBOL_CONSTANT_P (sym)
396 # define SYMBOL_VAL(sym) lisp_h_SYMBOL_VAL (sym)
397 # define SYMBOLP(x) lisp_h_SYMBOLP (x)
398 # define VECTORLIKEP(x) lisp_h_VECTORLIKEP (x)
399 # define XCAR(c) lisp_h_XCAR (c)
400 # define XCDR(c) lisp_h_XCDR (c)
401 # define XCONS(a) lisp_h_XCONS (a)
402 # define XHASH(a) lisp_h_XHASH (a)
403 # define XPNTR(a) lisp_h_XPNTR (a)
404 # ifndef GC_CHECK_CONS_LIST
405 # define check_cons_list() lisp_h_check_cons_list ()
408 # define make_number(n) lisp_h_make_number (n)
409 # define XFASTINT(a) lisp_h_XFASTINT (a)
410 # define XINT(a) lisp_h_XINT (a)
411 # define XSYMBOL(a) lisp_h_XSYMBOL (a)
412 # define XTYPE(a) lisp_h_XTYPE (a)
413 # define XUNTAG(a, type) lisp_h_XUNTAG (a, type)
417 /* Define NAME as a lisp.h inline function that returns TYPE and has
418 arguments declared as ARGDECLS and passed as ARGS. ARGDECLS and
419 ARGS should be parenthesized. Implement the function by calling
421 #define LISP_MACRO_DEFUN(name, type, argdecls, args) \
422 INLINE type (name) argdecls { return lisp_h_##name args; }
424 /* like LISP_MACRO_DEFUN, except NAME returns void. */
425 #define LISP_MACRO_DEFUN_VOID(name, argdecls, args) \
426 INLINE void (name) argdecls { lisp_h_##name args; }
429 /* Define the fundamental Lisp data structures. */
431 /* This is the set of Lisp data types. If you want to define a new
432 data type, read the comments after Lisp_Fwd_Type definition
435 /* Lisp integers use 2 tags, to give them one extra bit, thus
436 extending their range from, e.g., -2^28..2^28-1 to -2^29..2^29-1. */
437 #define INTMASK (EMACS_INT_MAX >> (INTTYPEBITS - 1))
438 #define case_Lisp_Int case Lisp_Int0: case Lisp_Int1
440 /* Idea stolen from GDB. Pedantic GCC complains about enum bitfields,
441 MSVC doesn't support them, and xlc and Oracle Studio c99 complain
442 vociferously about them. */
443 #if (defined __STRICT_ANSI__ || defined _MSC_VER || defined __IBMC__ \
444 || (defined __SUNPRO_C && __STDC__))
445 #define ENUM_BF(TYPE) unsigned int
447 #define ENUM_BF(TYPE) enum TYPE
453 /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */
456 /* Miscellaneous. XMISC (object) points to a union Lisp_Misc,
457 whose first member indicates the subtype. */
460 /* Integer. XINT (obj) is the integer value. */
462 Lisp_Int1
= USE_LSB_TAG
? 6 : 3,
464 /* String. XSTRING (object) points to a struct Lisp_String.
465 The length of the string, and its contents, are stored therein. */
468 /* Vector of Lisp objects, or something resembling it.
469 XVECTOR (object) points to a struct Lisp_Vector, which contains
470 the size and contents. The size field also contains the type
471 information, if it's not a real vector object. */
474 /* Cons. XCONS (object) points to a struct Lisp_Cons. */
475 Lisp_Cons
= USE_LSB_TAG
? 3 : 6,
480 /* This is the set of data types that share a common structure.
481 The first member of the structure is a type code from this set.
482 The enum values are arbitrary, but we'll use large numbers to make it
483 more likely that we'll spot the error if a random word in memory is
484 mistakenly interpreted as a Lisp_Misc. */
487 Lisp_Misc_Free
= 0x5eab,
490 Lisp_Misc_Save_Value
,
491 /* Currently floats are not a misc type,
492 but let's define this in case we want to change that. */
494 /* This is not a type code. It is for range checking. */
498 /* These are the types of forwarding objects used in the value slot
499 of symbols for special built-in variables whose value is stored in
503 Lisp_Fwd_Int
, /* Fwd to a C `int' variable. */
504 Lisp_Fwd_Bool
, /* Fwd to a C boolean var. */
505 Lisp_Fwd_Obj
, /* Fwd to a C Lisp_Object variable. */
506 Lisp_Fwd_Buffer_Obj
, /* Fwd to a Lisp_Object field of buffers. */
507 Lisp_Fwd_Kboard_Obj
/* Fwd to a Lisp_Object field of kboards. */
510 /* If you want to define a new Lisp data type, here are some
511 instructions. See the thread at
512 http://lists.gnu.org/archive/html/emacs-devel/2012-10/msg00561.html
515 First, there are already a couple of Lisp types that can be used if
516 your new type does not need to be exposed to Lisp programs nor
517 displayed to users. These are Lisp_Save_Value, a Lisp_Misc
518 subtype; and PVEC_OTHER, a kind of vectorlike object. The former
519 is suitable for temporarily stashing away pointers and integers in
520 a Lisp object. The latter is useful for vector-like Lisp objects
521 that need to be used as part of other objects, but which are never
522 shown to users or Lisp code (search for PVEC_OTHER in xterm.c for
525 These two types don't look pretty when printed, so they are
526 unsuitable for Lisp objects that can be exposed to users.
528 To define a new data type, add one more Lisp_Misc subtype or one
529 more pseudovector subtype. Pseudovectors are more suitable for
530 objects with several slots that need to support fast random access,
531 while Lisp_Misc types are for everything else. A pseudovector object
532 provides one or more slots for Lisp objects, followed by struct
533 members that are accessible only from C. A Lisp_Misc object is a
534 wrapper for a C struct that can contain anything you like.
536 Explicit freeing is discouraged for Lisp objects in general. But if
537 you really need to exploit this, use Lisp_Misc (check free_misc in
538 alloc.c to see why). There is no way to free a vectorlike object.
540 To add a new pseudovector type, extend the pvec_type enumeration;
541 to add a new Lisp_Misc, extend the Lisp_Misc_Type enumeration.
543 For a Lisp_Misc, you will also need to add your entry to union
544 Lisp_Misc (but make sure the first word has the same structure as
545 the others, starting with a 16-bit member of the Lisp_Misc_Type
546 enumeration and a 1-bit GC markbit) and make sure the overall size
547 of the union is not increased by your addition.
549 For a new pseudovector, it's highly desirable to limit the size
550 of your data type by VBLOCK_BYTES_MAX bytes (defined in alloc.c).
551 Otherwise you will need to change sweep_vectors (also in alloc.c).
553 Then you will need to add switch branches in print.c (in
554 print_object, to print your object, and possibly also in
555 print_preprocess) and to alloc.c, to mark your object (in
556 mark_object) and to free it (in gc_sweep). The latter is also the
557 right place to call any code specific to your data type that needs
558 to run when the object is recycled -- e.g., free any additional
559 resources allocated for it that are not Lisp objects. You can even
560 make a pointer to the function that frees the resources a slot in
561 your object -- this way, the same object could be used to represent
562 several disparate C structures. */
564 #ifdef CHECK_LISP_OBJECT_TYPE
566 typedef struct { EMACS_INT i
; } Lisp_Object
;
568 #define LISP_INITIALLY(i) {i}
570 #undef CHECK_LISP_OBJECT_TYPE
571 enum CHECK_LISP_OBJECT_TYPE
{ CHECK_LISP_OBJECT_TYPE
= true };
572 #else /* CHECK_LISP_OBJECT_TYPE */
574 /* If a struct type is not wanted, define Lisp_Object as just a number. */
576 typedef EMACS_INT Lisp_Object
;
577 #define LISP_INITIALLY(i) (i)
578 enum CHECK_LISP_OBJECT_TYPE
{ CHECK_LISP_OBJECT_TYPE
= false };
579 #endif /* CHECK_LISP_OBJECT_TYPE */
581 #define LISP_INITIALLY_ZERO LISP_INITIALLY (0)
583 /* Forward declarations. */
585 /* Defined in this file. */
587 INLINE
bool BOOL_VECTOR_P (Lisp_Object
);
588 INLINE
bool BUFFER_OBJFWDP (union Lisp_Fwd
*);
589 INLINE
bool BUFFERP (Lisp_Object
);
590 INLINE
bool CHAR_TABLE_P (Lisp_Object
);
591 INLINE Lisp_Object
CHAR_TABLE_REF_ASCII (Lisp_Object
, ptrdiff_t);
592 INLINE
bool (CONSP
) (Lisp_Object
);
593 INLINE
bool (FLOATP
) (Lisp_Object
);
594 INLINE
bool functionp (Lisp_Object
);
595 INLINE
bool (INTEGERP
) (Lisp_Object
);
596 INLINE
bool (MARKERP
) (Lisp_Object
);
597 INLINE
bool (MISCP
) (Lisp_Object
);
598 INLINE
bool (NILP
) (Lisp_Object
);
599 INLINE
bool OVERLAYP (Lisp_Object
);
600 INLINE
bool PROCESSP (Lisp_Object
);
601 INLINE
bool PSEUDOVECTORP (Lisp_Object
, int);
602 INLINE
bool SAVE_VALUEP (Lisp_Object
);
603 INLINE
void set_sub_char_table_contents (Lisp_Object
, ptrdiff_t,
605 INLINE
bool STRINGP (Lisp_Object
);
606 INLINE
bool SUB_CHAR_TABLE_P (Lisp_Object
);
607 INLINE
bool SUBRP (Lisp_Object
);
608 INLINE
bool (SYMBOLP
) (Lisp_Object
);
609 INLINE
bool (VECTORLIKEP
) (Lisp_Object
);
610 INLINE
bool WINDOWP (Lisp_Object
);
611 INLINE
bool TERMINALP (Lisp_Object
);
612 INLINE
struct Lisp_Save_Value
*XSAVE_VALUE (Lisp_Object
);
613 INLINE
struct Lisp_Symbol
*(XSYMBOL
) (Lisp_Object
);
614 INLINE
void *(XUNTAG
) (Lisp_Object
, int);
616 /* Defined in chartab.c. */
617 extern Lisp_Object
char_table_ref (Lisp_Object
, int);
618 extern void char_table_set (Lisp_Object
, int, Lisp_Object
);
620 /* Defined in data.c. */
621 extern _Noreturn Lisp_Object
wrong_type_argument (Lisp_Object
, Lisp_Object
);
622 extern _Noreturn
void wrong_choice (Lisp_Object
, Lisp_Object
);
624 /* Defined in emacs.c. */
625 extern bool might_dump
;
626 /* True means Emacs has already been initialized.
627 Used during startup to detect startup of dumped Emacs. */
628 extern bool initialized
;
630 /* Defined in floatfns.c. */
631 extern double extract_float (Lisp_Object
);
634 /* Interned state of a symbol. */
638 SYMBOL_UNINTERNED
= 0,
640 SYMBOL_INTERNED_IN_INITIAL_OBARRAY
= 2
647 SYMBOL_LOCALIZED
= 2,
653 bool_bf gcmarkbit
: 1;
655 /* Indicates where the value can be found:
656 0 : it's a plain var, the value is in the `value' field.
657 1 : it's a varalias, the value is really in the `alias' symbol.
658 2 : it's a localized var, the value is in the `blv' object.
659 3 : it's a forwarding variable, the value is in `forward'. */
660 ENUM_BF (symbol_redirect
) redirect
: 3;
662 /* Non-zero means symbol is constant, i.e. changing its value
663 should signal an error. If the value is 3, then the var
664 can be changed, but only by `defconst'. */
665 unsigned constant
: 2;
667 /* Interned state of the symbol. This is an enumerator from
668 enum symbol_interned. */
669 unsigned interned
: 2;
671 /* True means that this variable has been explicitly declared
672 special (with `defvar' etc), and shouldn't be lexically bound. */
673 bool_bf declared_special
: 1;
675 /* True if pointed to from purespace and hence can't be GC'd. */
678 /* The symbol's name, as a Lisp string. */
681 /* Value of the symbol or Qunbound if unbound. Which alternative of the
682 union is used depends on the `redirect' field above. */
685 struct Lisp_Symbol
*alias
;
686 struct Lisp_Buffer_Local_Value
*blv
;
690 /* Function value of the symbol or Qnil if not fboundp. */
691 Lisp_Object function
;
693 /* The symbol's property list. */
696 /* Next symbol in obarray bucket, if the symbol is interned. */
697 struct Lisp_Symbol
*next
;
700 /* Declare a Lisp-callable function. The MAXARGS parameter has the same
701 meaning as in the DEFUN macro, and is used to construct a prototype. */
702 /* We can use the same trick as in the DEFUN macro to generate the
703 appropriate prototype. */
704 #define EXFUN(fnname, maxargs) \
705 extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs
707 /* Note that the weird token-substitution semantics of ANSI C makes
708 this work for MANY and UNEVALLED. */
709 #define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *)
710 #define DEFUN_ARGS_UNEVALLED (Lisp_Object)
711 #define DEFUN_ARGS_0 (void)
712 #define DEFUN_ARGS_1 (Lisp_Object)
713 #define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object)
714 #define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object)
715 #define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
716 #define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
718 #define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
719 Lisp_Object, Lisp_Object)
720 #define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
721 Lisp_Object, Lisp_Object, Lisp_Object)
722 #define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
723 Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
725 /* Yield an integer that contains TAG along with PTR. */
726 #define TAG_PTR(tag, ptr) \
727 ((USE_LSB_TAG ? (tag) : (EMACS_UINT) (tag) << VALBITS) + (uintptr_t) (ptr))
729 /* Yield an integer that contains a symbol tag along with OFFSET.
730 OFFSET should be the offset in bytes from 'lispsym' to the symbol. */
731 #define TAG_SYMOFFSET(offset) \
732 TAG_PTR (Lisp_Symbol, \
733 ((uintptr_t) (offset) >> (USE_LSB_TAG ? 0 : GCTYPEBITS)))
735 /* XLI_BUILTIN_LISPSYM (iQwhatever) is equivalent to
736 XLI (builtin_lisp_symbol (Qwhatever)),
737 except the former expands to an integer constant expression. */
738 #define XLI_BUILTIN_LISPSYM(iname) TAG_SYMOFFSET ((iname) * sizeof *lispsym)
740 /* Declare extern constants for Lisp symbols. These can be helpful
741 when using a debugger like GDB, on older platforms where the debug
742 format does not represent C macros. */
743 #define DEFINE_LISP_SYMBOL_BEGIN(name) \
744 DEFINE_GDB_SYMBOL_BEGIN (Lisp_Object, name)
745 #define DEFINE_LISP_SYMBOL_END(name) \
746 DEFINE_GDB_SYMBOL_END (LISP_INITIALLY (XLI_BUILTIN_LISPSYM (i##name)))
750 /* Convert a Lisp_Object to the corresponding EMACS_INT and vice versa.
751 At the machine level, these operations are no-ops. */
752 LISP_MACRO_DEFUN (XLI
, EMACS_INT
, (Lisp_Object o
), (o
))
753 LISP_MACRO_DEFUN (XIL
, Lisp_Object
, (EMACS_INT i
), (i
))
755 /* In the size word of a vector, this bit means the vector has been marked. */
757 DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, ARRAY_MARK_FLAG
)
758 # define ARRAY_MARK_FLAG PTRDIFF_MIN
759 DEFINE_GDB_SYMBOL_END (ARRAY_MARK_FLAG
)
761 /* In the size word of a struct Lisp_Vector, this bit means it's really
762 some other vector-like object. */
763 DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, PSEUDOVECTOR_FLAG
)
764 # define PSEUDOVECTOR_FLAG (PTRDIFF_MAX - PTRDIFF_MAX / 2)
765 DEFINE_GDB_SYMBOL_END (PSEUDOVECTOR_FLAG
)
767 /* In a pseudovector, the size field actually contains a word with one
768 PSEUDOVECTOR_FLAG bit set, and one of the following values extracted
769 with PVEC_TYPE_MASK to indicate the actual type. */
781 PVEC_WINDOW_CONFIGURATION
,
789 /* These should be last, check internal_equal to see why. */
793 PVEC_FONT
/* Should be last because it's used for range checking. */
798 /* For convenience, we also store the number of elements in these bits.
799 Note that this size is not necessarily the memory-footprint size, but
800 only the number of Lisp_Object fields (that need to be traced by GC).
801 The distinction is used, e.g., by Lisp_Process, which places extra
802 non-Lisp_Object fields at the end of the structure. */
803 PSEUDOVECTOR_SIZE_BITS
= 12,
804 PSEUDOVECTOR_SIZE_MASK
= (1 << PSEUDOVECTOR_SIZE_BITS
) - 1,
806 /* To calculate the memory footprint of the pseudovector, it's useful
807 to store the size of non-Lisp area in word_size units here. */
808 PSEUDOVECTOR_REST_BITS
= 12,
809 PSEUDOVECTOR_REST_MASK
= (((1 << PSEUDOVECTOR_REST_BITS
) - 1)
810 << PSEUDOVECTOR_SIZE_BITS
),
812 /* Used to extract pseudovector subtype information. */
813 PSEUDOVECTOR_AREA_BITS
= PSEUDOVECTOR_SIZE_BITS
+ PSEUDOVECTOR_REST_BITS
,
814 PVEC_TYPE_MASK
= 0x3f << PSEUDOVECTOR_AREA_BITS
817 /* These functions extract various sorts of values from a Lisp_Object.
818 For example, if tem is a Lisp_Object whose type is Lisp_Cons,
819 XCONS (tem) is the struct Lisp_Cons * pointing to the memory for
822 /* Mask for the value (as opposed to the type bits) of a Lisp object. */
823 DEFINE_GDB_SYMBOL_BEGIN (EMACS_INT
, VALMASK
)
824 # define VALMASK (USE_LSB_TAG ? - (1 << GCTYPEBITS) : VAL_MAX)
825 DEFINE_GDB_SYMBOL_END (VALMASK
)
827 /* Largest and smallest representable fixnum values. These are the C
828 values. They are macros for use in static initializers. */
829 #define MOST_POSITIVE_FIXNUM (EMACS_INT_MAX >> INTTYPEBITS)
830 #define MOST_NEGATIVE_FIXNUM (-1 - MOST_POSITIVE_FIXNUM)
834 LISP_MACRO_DEFUN (make_number
, Lisp_Object
, (EMACS_INT n
), (n
))
835 LISP_MACRO_DEFUN (XINT
, EMACS_INT
, (Lisp_Object a
), (a
))
836 LISP_MACRO_DEFUN (XFASTINT
, EMACS_INT
, (Lisp_Object a
), (a
))
837 LISP_MACRO_DEFUN (XSYMBOL
, struct Lisp_Symbol
*, (Lisp_Object a
), (a
))
838 LISP_MACRO_DEFUN (XTYPE
, enum Lisp_Type
, (Lisp_Object a
), (a
))
839 LISP_MACRO_DEFUN (XUNTAG
, void *, (Lisp_Object a
, int type
), (a
, type
))
841 #else /* ! USE_LSB_TAG */
843 /* Although compiled only if ! USE_LSB_TAG, the following functions
844 also work when USE_LSB_TAG; this is to aid future maintenance when
845 the lisp_h_* macros are eventually removed. */
847 /* Make a Lisp integer representing the value of the low order
850 make_number (EMACS_INT n
)
852 EMACS_INT int0
= Lisp_Int0
;
856 n
= u
<< INTTYPEBITS
;
862 n
+= (int0
<< VALBITS
);
867 /* Extract A's value as a signed integer. */
871 EMACS_INT i
= XLI (a
);
875 i
= u
<< INTTYPEBITS
;
877 return i
>> INTTYPEBITS
;
880 /* Like XINT (A), but may be faster. A must be nonnegative.
881 If ! USE_LSB_TAG, this takes advantage of the fact that Lisp
882 integers have zero-bits in their tags. */
884 XFASTINT (Lisp_Object a
)
886 EMACS_INT int0
= Lisp_Int0
;
887 EMACS_INT n
= USE_LSB_TAG
? XINT (a
) : XLI (a
) - (int0
<< VALBITS
);
892 /* Extract A's value as a symbol. */
893 INLINE
struct Lisp_Symbol
*
894 XSYMBOL (Lisp_Object a
)
896 uintptr_t i
= (uintptr_t) XUNTAG (a
, Lisp_Symbol
);
899 void *p
= (char *) lispsym
+ i
;
903 /* Extract A's type. */
904 INLINE
enum Lisp_Type
905 XTYPE (Lisp_Object a
)
907 EMACS_UINT i
= XLI (a
);
908 return USE_LSB_TAG
? i
& ~VALMASK
: i
>> VALBITS
;
911 /* Extract A's pointer value, assuming A's type is TYPE. */
913 XUNTAG (Lisp_Object a
, int type
)
915 intptr_t i
= USE_LSB_TAG
? XLI (a
) - type
: XLI (a
) & VALMASK
;
919 #endif /* ! USE_LSB_TAG */
921 /* Extract the pointer hidden within A. */
922 LISP_MACRO_DEFUN (XPNTR
, void *, (Lisp_Object a
), (a
))
924 /* Extract A's value as an unsigned integer. */
926 XUINT (Lisp_Object a
)
928 EMACS_UINT i
= XLI (a
);
929 return USE_LSB_TAG
? i
>> INTTYPEBITS
: i
& INTMASK
;
932 /* Return A's (Lisp-integer sized) hash. Happens to be like XUINT
933 right now, but XUINT should only be applied to objects we know are
935 LISP_MACRO_DEFUN (XHASH
, EMACS_INT
, (Lisp_Object a
), (a
))
937 /* Like make_number (N), but may be faster. N must be in nonnegative range. */
939 make_natnum (EMACS_INT n
)
941 eassert (0 <= n
&& n
<= MOST_POSITIVE_FIXNUM
);
942 EMACS_INT int0
= Lisp_Int0
;
943 return USE_LSB_TAG
? make_number (n
) : XIL (n
+ (int0
<< VALBITS
));
946 /* Return true if X and Y are the same object. */
947 LISP_MACRO_DEFUN (EQ
, bool, (Lisp_Object x
, Lisp_Object y
), (x
, y
))
949 /* Value is true if I doesn't fit into a Lisp fixnum. It is
950 written this way so that it also works if I is of unsigned
951 type or if I is a NaN. */
953 #define FIXNUM_OVERFLOW_P(i) \
954 (! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM))
957 clip_to_bounds (ptrdiff_t lower
, EMACS_INT num
, ptrdiff_t upper
)
959 return num
< lower
? lower
: num
<= upper
? num
: upper
;
963 /* Extract a value or address from a Lisp_Object. */
965 LISP_MACRO_DEFUN (XCONS
, struct Lisp_Cons
*, (Lisp_Object a
), (a
))
967 INLINE
struct Lisp_Vector
*
968 XVECTOR (Lisp_Object a
)
970 eassert (VECTORLIKEP (a
));
971 return XUNTAG (a
, Lisp_Vectorlike
);
974 INLINE
struct Lisp_String
*
975 XSTRING (Lisp_Object a
)
977 eassert (STRINGP (a
));
978 return XUNTAG (a
, Lisp_String
);
981 /* The index of the C-defined Lisp symbol SYM.
982 This can be used in a static initializer. */
983 #define SYMBOL_INDEX(sym) i##sym
985 INLINE
struct Lisp_Float
*
986 XFLOAT (Lisp_Object a
)
988 eassert (FLOATP (a
));
989 return XUNTAG (a
, Lisp_Float
);
992 /* Pseudovector types. */
994 INLINE
struct Lisp_Process
*
995 XPROCESS (Lisp_Object a
)
997 eassert (PROCESSP (a
));
998 return XUNTAG (a
, Lisp_Vectorlike
);
1001 INLINE
struct window
*
1002 XWINDOW (Lisp_Object a
)
1004 eassert (WINDOWP (a
));
1005 return XUNTAG (a
, Lisp_Vectorlike
);
1008 INLINE
struct terminal
*
1009 XTERMINAL (Lisp_Object a
)
1011 eassert (TERMINALP (a
));
1012 return XUNTAG (a
, Lisp_Vectorlike
);
1015 INLINE
struct Lisp_Subr
*
1016 XSUBR (Lisp_Object a
)
1018 eassert (SUBRP (a
));
1019 return XUNTAG (a
, Lisp_Vectorlike
);
1022 INLINE
struct buffer
*
1023 XBUFFER (Lisp_Object a
)
1025 eassert (BUFFERP (a
));
1026 return XUNTAG (a
, Lisp_Vectorlike
);
1029 INLINE
struct Lisp_Char_Table
*
1030 XCHAR_TABLE (Lisp_Object a
)
1032 eassert (CHAR_TABLE_P (a
));
1033 return XUNTAG (a
, Lisp_Vectorlike
);
1036 INLINE
struct Lisp_Sub_Char_Table
*
1037 XSUB_CHAR_TABLE (Lisp_Object a
)
1039 eassert (SUB_CHAR_TABLE_P (a
));
1040 return XUNTAG (a
, Lisp_Vectorlike
);
1043 INLINE
struct Lisp_Bool_Vector
*
1044 XBOOL_VECTOR (Lisp_Object a
)
1046 eassert (BOOL_VECTOR_P (a
));
1047 return XUNTAG (a
, Lisp_Vectorlike
);
1050 /* Construct a Lisp_Object from a value or address. */
1053 make_lisp_ptr (void *ptr
, enum Lisp_Type type
)
1055 Lisp_Object a
= XIL (TAG_PTR (type
, ptr
));
1056 eassert (XTYPE (a
) == type
&& XUNTAG (a
, type
) == ptr
);
1061 make_lisp_symbol (struct Lisp_Symbol
*sym
)
1063 Lisp_Object a
= XIL (TAG_SYMOFFSET ((char *) sym
- (char *) lispsym
));
1064 eassert (XSYMBOL (a
) == sym
);
1069 builtin_lisp_symbol (int index
)
1071 return make_lisp_symbol (lispsym
+ index
);
1074 #define XSETINT(a, b) ((a) = make_number (b))
1075 #define XSETFASTINT(a, b) ((a) = make_natnum (b))
1076 #define XSETCONS(a, b) ((a) = make_lisp_ptr (b, Lisp_Cons))
1077 #define XSETVECTOR(a, b) ((a) = make_lisp_ptr (b, Lisp_Vectorlike))
1078 #define XSETSTRING(a, b) ((a) = make_lisp_ptr (b, Lisp_String))
1079 #define XSETSYMBOL(a, b) ((a) = make_lisp_symbol (b))
1080 #define XSETFLOAT(a, b) ((a) = make_lisp_ptr (b, Lisp_Float))
1081 #define XSETMISC(a, b) ((a) = make_lisp_ptr (b, Lisp_Misc))
1083 /* Pseudovector types. */
1085 #define XSETPVECTYPE(v, code) \
1086 ((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS))
1087 #define XSETPVECTYPESIZE(v, code, lispsize, restsize) \
1088 ((v)->header.size = (PSEUDOVECTOR_FLAG \
1089 | ((code) << PSEUDOVECTOR_AREA_BITS) \
1090 | ((restsize) << PSEUDOVECTOR_SIZE_BITS) \
1093 /* The cast to struct vectorlike_header * avoids aliasing issues. */
1094 #define XSETPSEUDOVECTOR(a, b, code) \
1095 XSETTYPED_PSEUDOVECTOR (a, b, \
1096 (((struct vectorlike_header *) \
1097 XUNTAG (a, Lisp_Vectorlike)) \
1100 #define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \
1101 (XSETVECTOR (a, b), \
1102 eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \
1103 == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))))
1105 #define XSETWINDOW_CONFIGURATION(a, b) \
1106 (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION))
1107 #define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS))
1108 #define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW))
1109 #define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL))
1110 #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR))
1111 #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED))
1112 #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER))
1113 #define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE))
1114 #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR))
1115 #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE))
1117 /* Efficiently convert a pointer to a Lisp object and back. The
1118 pointer is represented as a Lisp integer, so the garbage collector
1119 does not know about it. The pointer should not have both Lisp_Int1
1120 bits set, which makes this conversion inherently unportable. */
1123 XINTPTR (Lisp_Object a
)
1125 return XUNTAG (a
, Lisp_Int0
);
1129 make_pointer_integer (void *p
)
1131 Lisp_Object a
= XIL (TAG_PTR (Lisp_Int0
, p
));
1132 eassert (INTEGERP (a
) && XINTPTR (a
) == p
);
1136 /* Type checking. */
1138 LISP_MACRO_DEFUN_VOID (CHECK_TYPE
,
1139 (int ok
, Lisp_Object predicate
, Lisp_Object x
),
1142 /* Deprecated and will be removed soon. */
1144 #define INTERNAL_FIELD(field) field ## _
1146 /* See the macros in intervals.h. */
1148 typedef struct interval
*INTERVAL
;
1150 struct GCALIGNED Lisp_Cons
1152 /* Car of this cons cell. */
1157 /* Cdr of this cons cell. */
1160 /* Used to chain conses on a free list. */
1161 struct Lisp_Cons
*chain
;
1165 /* Take the car or cdr of something known to be a cons cell. */
1166 /* The _addr functions shouldn't be used outside of the minimal set
1167 of code that has to know what a cons cell looks like. Other code not
1168 part of the basic lisp implementation should assume that the car and cdr
1169 fields are not accessible. (What if we want to switch to
1170 a copying collector someday? Cached cons cell field addresses may be
1171 invalidated at arbitrary points.) */
1172 INLINE Lisp_Object
*
1173 xcar_addr (Lisp_Object c
)
1175 return &XCONS (c
)->car
;
1177 INLINE Lisp_Object
*
1178 xcdr_addr (Lisp_Object c
)
1180 return &XCONS (c
)->u
.cdr
;
1183 /* Use these from normal code. */
1184 LISP_MACRO_DEFUN (XCAR
, Lisp_Object
, (Lisp_Object c
), (c
))
1185 LISP_MACRO_DEFUN (XCDR
, Lisp_Object
, (Lisp_Object c
), (c
))
1187 /* Use these to set the fields of a cons cell.
1189 Note that both arguments may refer to the same object, so 'n'
1190 should not be read after 'c' is first modified. */
1192 XSETCAR (Lisp_Object c
, Lisp_Object n
)
1197 XSETCDR (Lisp_Object c
, Lisp_Object n
)
1202 /* Take the car or cdr of something whose type is not known. */
1206 return (CONSP (c
) ? XCAR (c
)
1208 : wrong_type_argument (Qlistp
, c
));
1213 return (CONSP (c
) ? XCDR (c
)
1215 : wrong_type_argument (Qlistp
, c
));
1218 /* Take the car or cdr of something whose type is not known. */
1220 CAR_SAFE (Lisp_Object c
)
1222 return CONSP (c
) ? XCAR (c
) : Qnil
;
1225 CDR_SAFE (Lisp_Object c
)
1227 return CONSP (c
) ? XCDR (c
) : Qnil
;
1230 /* In a string or vector, the sign bit of the `size' is the gc mark bit. */
1232 struct GCALIGNED Lisp_String
1235 ptrdiff_t size_byte
;
1236 INTERVAL intervals
; /* Text properties in this string. */
1237 unsigned char *data
;
1240 /* True if STR is a multibyte string. */
1242 STRING_MULTIBYTE (Lisp_Object str
)
1244 return 0 <= XSTRING (str
)->size_byte
;
1247 /* An upper bound on the number of bytes in a Lisp string, not
1248 counting the terminating null. This a tight enough bound to
1249 prevent integer overflow errors that would otherwise occur during
1250 string size calculations. A string cannot contain more bytes than
1251 a fixnum can represent, nor can it be so long that C pointer
1252 arithmetic stops working on the string plus its terminating null.
1253 Although the actual size limit (see STRING_BYTES_MAX in alloc.c)
1254 may be a bit smaller than STRING_BYTES_BOUND, calculating it here
1255 would expose alloc.c internal details that we'd rather keep
1258 This is a macro for use in static initializers. The cast to
1259 ptrdiff_t ensures that the macro is signed. */
1260 #define STRING_BYTES_BOUND \
1261 ((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1))
1263 /* Mark STR as a unibyte string. */
1264 #define STRING_SET_UNIBYTE(STR) \
1266 if (EQ (STR, empty_multibyte_string)) \
1267 (STR) = empty_unibyte_string; \
1269 XSTRING (STR)->size_byte = -1; \
1272 /* Mark STR as a multibyte string. Assure that STR contains only
1273 ASCII characters in advance. */
1274 #define STRING_SET_MULTIBYTE(STR) \
1276 if (EQ (STR, empty_unibyte_string)) \
1277 (STR) = empty_multibyte_string; \
1279 XSTRING (STR)->size_byte = XSTRING (STR)->size; \
1282 /* Convenience functions for dealing with Lisp strings. */
1284 INLINE
unsigned char *
1285 SDATA (Lisp_Object string
)
1287 return XSTRING (string
)->data
;
1290 SSDATA (Lisp_Object string
)
1292 /* Avoid "differ in sign" warnings. */
1293 return (char *) SDATA (string
);
1295 INLINE
unsigned char
1296 SREF (Lisp_Object string
, ptrdiff_t index
)
1298 return SDATA (string
)[index
];
1301 SSET (Lisp_Object string
, ptrdiff_t index
, unsigned char new)
1303 SDATA (string
)[index
] = new;
1306 SCHARS (Lisp_Object string
)
1308 return XSTRING (string
)->size
;
1311 #ifdef GC_CHECK_STRING_BYTES
1312 extern ptrdiff_t string_bytes (struct Lisp_String
*);
1315 STRING_BYTES (struct Lisp_String
*s
)
1317 #ifdef GC_CHECK_STRING_BYTES
1318 return string_bytes (s
);
1320 return s
->size_byte
< 0 ? s
->size
: s
->size_byte
;
1325 SBYTES (Lisp_Object string
)
1327 return STRING_BYTES (XSTRING (string
));
1330 STRING_SET_CHARS (Lisp_Object string
, ptrdiff_t newsize
)
1332 XSTRING (string
)->size
= newsize
;
1335 /* Header of vector-like objects. This documents the layout constraints on
1336 vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents
1337 compilers from being fooled by Emacs's type punning: XSETPSEUDOVECTOR
1338 and PSEUDOVECTORP cast their pointers to struct vectorlike_header *,
1339 because when two such pointers potentially alias, a compiler won't
1340 incorrectly reorder loads and stores to their size fields. See
1342 struct vectorlike_header
1344 /* The only field contains various pieces of information:
1345 - The MSB (ARRAY_MARK_FLAG) holds the gcmarkbit.
1346 - The next bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain
1347 vector (0) or a pseudovector (1).
1348 - If PSEUDOVECTOR_FLAG is 0, the rest holds the size (number
1349 of slots) of the vector.
1350 - If PSEUDOVECTOR_FLAG is 1, the rest is subdivided into three fields:
1351 - a) pseudovector subtype held in PVEC_TYPE_MASK field;
1352 - b) number of Lisp_Objects slots at the beginning of the object
1353 held in PSEUDOVECTOR_SIZE_MASK field. These objects are always
1355 - c) size of the rest fields held in PSEUDOVECTOR_REST_MASK and
1356 measured in word_size units. Rest fields may also include
1357 Lisp_Objects, but these objects usually needs some special treatment
1359 There are some exceptions. For PVEC_FREE, b) is always zero. For
1360 PVEC_BOOL_VECTOR and PVEC_SUBR, both b) and c) are always zero.
1361 Current layout limits the pseudovectors to 63 PVEC_xxx subtypes,
1362 4095 Lisp_Objects in GC-ed area and 4095 word-sized other slots. */
1366 /* A regular vector is just a header plus an array of Lisp_Objects. */
1370 struct vectorlike_header header
;
1371 Lisp_Object contents
[FLEXIBLE_ARRAY_MEMBER
];
1374 /* C11 prohibits alignof (struct Lisp_Vector), so compute it manually. */
1377 ALIGNOF_STRUCT_LISP_VECTOR
1378 = alignof (union { struct vectorlike_header a
; Lisp_Object b
; })
1381 /* A boolvector is a kind of vectorlike, with contents like a string. */
1383 struct Lisp_Bool_Vector
1385 /* HEADER.SIZE is the vector's size field. It doesn't have the real size,
1386 just the subtype information. */
1387 struct vectorlike_header header
;
1388 /* This is the size in bits. */
1390 /* The actual bits, packed into bytes.
1391 Zeros fill out the last word if needed.
1392 The bits are in little-endian order in the bytes, and
1393 the bytes are in little-endian order in the words. */
1394 bits_word data
[FLEXIBLE_ARRAY_MEMBER
];
1398 bool_vector_size (Lisp_Object a
)
1400 EMACS_INT size
= XBOOL_VECTOR (a
)->size
;
1401 eassume (0 <= size
);
1406 bool_vector_data (Lisp_Object a
)
1408 return XBOOL_VECTOR (a
)->data
;
1411 INLINE
unsigned char *
1412 bool_vector_uchar_data (Lisp_Object a
)
1414 return (unsigned char *) bool_vector_data (a
);
1417 /* The number of data words and bytes in a bool vector with SIZE bits. */
1420 bool_vector_words (EMACS_INT size
)
1422 eassume (0 <= size
&& size
<= EMACS_INT_MAX
- (BITS_PER_BITS_WORD
- 1));
1423 return (size
+ BITS_PER_BITS_WORD
- 1) / BITS_PER_BITS_WORD
;
1427 bool_vector_bytes (EMACS_INT size
)
1429 eassume (0 <= size
&& size
<= EMACS_INT_MAX
- (BITS_PER_BITS_WORD
- 1));
1430 return (size
+ BOOL_VECTOR_BITS_PER_CHAR
- 1) / BOOL_VECTOR_BITS_PER_CHAR
;
1433 /* True if A's Ith bit is set. */
1436 bool_vector_bitref (Lisp_Object a
, EMACS_INT i
)
1438 eassume (0 <= i
&& i
< bool_vector_size (a
));
1439 return !! (bool_vector_uchar_data (a
)[i
/ BOOL_VECTOR_BITS_PER_CHAR
]
1440 & (1 << (i
% BOOL_VECTOR_BITS_PER_CHAR
)));
1444 bool_vector_ref (Lisp_Object a
, EMACS_INT i
)
1446 return bool_vector_bitref (a
, i
) ? Qt
: Qnil
;
1449 /* Set A's Ith bit to B. */
1452 bool_vector_set (Lisp_Object a
, EMACS_INT i
, bool b
)
1454 unsigned char *addr
;
1456 eassume (0 <= i
&& i
< bool_vector_size (a
));
1457 addr
= &bool_vector_uchar_data (a
)[i
/ BOOL_VECTOR_BITS_PER_CHAR
];
1460 *addr
|= 1 << (i
% BOOL_VECTOR_BITS_PER_CHAR
);
1462 *addr
&= ~ (1 << (i
% BOOL_VECTOR_BITS_PER_CHAR
));
1465 /* Some handy constants for calculating sizes
1466 and offsets, mostly of vectorlike objects. */
1470 header_size
= offsetof (struct Lisp_Vector
, contents
),
1471 bool_header_size
= offsetof (struct Lisp_Bool_Vector
, data
),
1472 word_size
= sizeof (Lisp_Object
)
1475 /* Conveniences for dealing with Lisp arrays. */
1478 AREF (Lisp_Object array
, ptrdiff_t idx
)
1480 return XVECTOR (array
)->contents
[idx
];
1483 INLINE Lisp_Object
*
1484 aref_addr (Lisp_Object array
, ptrdiff_t idx
)
1486 return & XVECTOR (array
)->contents
[idx
];
1490 ASIZE (Lisp_Object array
)
1492 return XVECTOR (array
)->header
.size
;
1496 ASET (Lisp_Object array
, ptrdiff_t idx
, Lisp_Object val
)
1498 eassert (0 <= idx
&& idx
< ASIZE (array
));
1499 XVECTOR (array
)->contents
[idx
] = val
;
1503 gc_aset (Lisp_Object array
, ptrdiff_t idx
, Lisp_Object val
)
1505 /* Like ASET, but also can be used in the garbage collector:
1506 sweep_weak_table calls set_hash_key etc. while the table is marked. */
1507 eassert (0 <= idx
&& idx
< (ASIZE (array
) & ~ARRAY_MARK_FLAG
));
1508 XVECTOR (array
)->contents
[idx
] = val
;
1511 /* True, since Qnil's representation is zero. Every place in the code
1512 that assumes Qnil is zero should verify (NIL_IS_ZERO), to make it easy
1513 to find such assumptions later if we change Qnil to be nonzero. */
1514 enum { NIL_IS_ZERO
= XLI_BUILTIN_LISPSYM (iQnil
) == 0 };
1516 /* Set a Lisp_Object array V's N entries to nil. */
1518 memsetnil (Lisp_Object
*v
, ptrdiff_t n
)
1521 verify (NIL_IS_ZERO
);
1522 memset (v
, 0, n
* sizeof *v
);
1525 /* If a struct is made to look like a vector, this macro returns the length
1526 of the shortest vector that would hold that struct. */
1528 #define VECSIZE(type) \
1529 ((sizeof (type) - header_size + word_size - 1) / word_size)
1531 /* Like VECSIZE, but used when the pseudo-vector has non-Lisp_Object fields
1532 at the end and we need to compute the number of Lisp_Object fields (the
1533 ones that the GC needs to trace). */
1535 #define PSEUDOVECSIZE(type, nonlispfield) \
1536 ((offsetof (type, nonlispfield) - header_size) / word_size)
1538 /* Compute A OP B, using the unsigned comparison operator OP. A and B
1539 should be integer expressions. This is not the same as
1540 mathematical comparison; for example, UNSIGNED_CMP (0, <, -1)
1541 returns true. For efficiency, prefer plain unsigned comparison if A
1542 and B's sizes both fit (after integer promotion). */
1543 #define UNSIGNED_CMP(a, op, b) \
1544 (max (sizeof ((a) + 0), sizeof ((b) + 0)) <= sizeof (unsigned) \
1545 ? ((a) + (unsigned) 0) op ((b) + (unsigned) 0) \
1546 : ((a) + (uintmax_t) 0) op ((b) + (uintmax_t) 0))
1548 /* True iff C is an ASCII character. */
1549 #define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80)
1551 /* A char-table is a kind of vectorlike, with contents are like a
1552 vector but with a few other slots. For some purposes, it makes
1553 sense to handle a char-table with type struct Lisp_Vector. An
1554 element of a char table can be any Lisp objects, but if it is a sub
1555 char-table, we treat it a table that contains information of a
1556 specific range of characters. A sub char-table is like a vector but
1557 with two integer fields between the header and Lisp data, which means
1558 that it has to be marked with some precautions (see mark_char_table
1559 in alloc.c). A sub char-table appears only in an element of a char-table,
1560 and there's no way to access it directly from Emacs Lisp program. */
1562 enum CHARTAB_SIZE_BITS
1564 CHARTAB_SIZE_BITS_0
= 6,
1565 CHARTAB_SIZE_BITS_1
= 4,
1566 CHARTAB_SIZE_BITS_2
= 5,
1567 CHARTAB_SIZE_BITS_3
= 7
1570 extern const int chartab_size
[4];
1572 struct Lisp_Char_Table
1574 /* HEADER.SIZE is the vector's size field, which also holds the
1575 pseudovector type information. It holds the size, too.
1576 The size counts the defalt, parent, purpose, ascii,
1577 contents, and extras slots. */
1578 struct vectorlike_header header
;
1580 /* This holds a default value,
1581 which is used whenever the value for a specific character is nil. */
1584 /* This points to another char table, which we inherit from when the
1585 value for a specific character is nil. The `defalt' slot takes
1586 precedence over this. */
1589 /* This is a symbol which says what kind of use this char-table is
1591 Lisp_Object purpose
;
1593 /* The bottom sub char-table for characters of the range 0..127. It
1594 is nil if none of ASCII character has a specific value. */
1597 Lisp_Object contents
[(1 << CHARTAB_SIZE_BITS_0
)];
1599 /* These hold additional data. It is a vector. */
1600 Lisp_Object extras
[FLEXIBLE_ARRAY_MEMBER
];
1603 struct Lisp_Sub_Char_Table
1605 /* HEADER.SIZE is the vector's size field, which also holds the
1606 pseudovector type information. It holds the size, too. */
1607 struct vectorlike_header header
;
1609 /* Depth of this sub char-table. It should be 1, 2, or 3. A sub
1610 char-table of depth 1 contains 16 elements, and each element
1611 covers 4096 (128*32) characters. A sub char-table of depth 2
1612 contains 32 elements, and each element covers 128 characters. A
1613 sub char-table of depth 3 contains 128 elements, and each element
1614 is for one character. */
1617 /* Minimum character covered by the sub char-table. */
1620 /* Use set_sub_char_table_contents to set this. */
1621 Lisp_Object contents
[FLEXIBLE_ARRAY_MEMBER
];
1625 CHAR_TABLE_REF_ASCII (Lisp_Object ct
, ptrdiff_t idx
)
1627 struct Lisp_Char_Table
*tbl
= NULL
;
1631 tbl
= tbl
? XCHAR_TABLE (tbl
->parent
) : XCHAR_TABLE (ct
);
1632 val
= (! SUB_CHAR_TABLE_P (tbl
->ascii
) ? tbl
->ascii
1633 : XSUB_CHAR_TABLE (tbl
->ascii
)->contents
[idx
]);
1637 while (NILP (val
) && ! NILP (tbl
->parent
));
1642 /* Almost equivalent to Faref (CT, IDX) with optimization for ASCII
1643 characters. Do not check validity of CT. */
1645 CHAR_TABLE_REF (Lisp_Object ct
, int idx
)
1647 return (ASCII_CHAR_P (idx
)
1648 ? CHAR_TABLE_REF_ASCII (ct
, idx
)
1649 : char_table_ref (ct
, idx
));
1652 /* Equivalent to Faset (CT, IDX, VAL) with optimization for ASCII and
1653 8-bit European characters. Do not check validity of CT. */
1655 CHAR_TABLE_SET (Lisp_Object ct
, int idx
, Lisp_Object val
)
1657 if (ASCII_CHAR_P (idx
) && SUB_CHAR_TABLE_P (XCHAR_TABLE (ct
)->ascii
))
1658 set_sub_char_table_contents (XCHAR_TABLE (ct
)->ascii
, idx
, val
);
1660 char_table_set (ct
, idx
, val
);
1663 /* This structure describes a built-in function.
1664 It is generated by the DEFUN macro only.
1665 defsubr makes it into a Lisp object. */
1669 struct vectorlike_header header
;
1671 Lisp_Object (*a0
) (void);
1672 Lisp_Object (*a1
) (Lisp_Object
);
1673 Lisp_Object (*a2
) (Lisp_Object
, Lisp_Object
);
1674 Lisp_Object (*a3
) (Lisp_Object
, Lisp_Object
, Lisp_Object
);
1675 Lisp_Object (*a4
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1676 Lisp_Object (*a5
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1677 Lisp_Object (*a6
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1678 Lisp_Object (*a7
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1679 Lisp_Object (*a8
) (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
1680 Lisp_Object (*aUNEVALLED
) (Lisp_Object args
);
1681 Lisp_Object (*aMANY
) (ptrdiff_t, Lisp_Object
*);
1683 short min_args
, max_args
;
1684 const char *symbol_name
;
1685 const char *intspec
;
1689 enum char_table_specials
1691 /* This is the number of slots that every char table must have. This
1692 counts the ordinary slots and the top, defalt, parent, and purpose
1694 CHAR_TABLE_STANDARD_SLOTS
= PSEUDOVECSIZE (struct Lisp_Char_Table
, extras
),
1696 /* This is an index of first Lisp_Object field in Lisp_Sub_Char_Table
1697 when the latter is treated as an ordinary Lisp_Vector. */
1698 SUB_CHAR_TABLE_OFFSET
= PSEUDOVECSIZE (struct Lisp_Sub_Char_Table
, contents
)
1701 /* Return the number of "extra" slots in the char table CT. */
1704 CHAR_TABLE_EXTRA_SLOTS (struct Lisp_Char_Table
*ct
)
1706 return ((ct
->header
.size
& PSEUDOVECTOR_SIZE_MASK
)
1707 - CHAR_TABLE_STANDARD_SLOTS
);
1710 /* Make sure that sub char-table contents slot is where we think it is. */
1711 verify (offsetof (struct Lisp_Sub_Char_Table
, contents
)
1712 == offsetof (struct Lisp_Vector
, contents
[SUB_CHAR_TABLE_OFFSET
]));
1714 /***********************************************************************
1716 ***********************************************************************/
1718 /* Value is name of symbol. */
1720 LISP_MACRO_DEFUN (SYMBOL_VAL
, Lisp_Object
, (struct Lisp_Symbol
*sym
), (sym
))
1722 INLINE
struct Lisp_Symbol
*
1723 SYMBOL_ALIAS (struct Lisp_Symbol
*sym
)
1725 eassert (sym
->redirect
== SYMBOL_VARALIAS
);
1726 return sym
->val
.alias
;
1728 INLINE
struct Lisp_Buffer_Local_Value
*
1729 SYMBOL_BLV (struct Lisp_Symbol
*sym
)
1731 eassert (sym
->redirect
== SYMBOL_LOCALIZED
);
1732 return sym
->val
.blv
;
1734 INLINE
union Lisp_Fwd
*
1735 SYMBOL_FWD (struct Lisp_Symbol
*sym
)
1737 eassert (sym
->redirect
== SYMBOL_FORWARDED
);
1738 return sym
->val
.fwd
;
1741 LISP_MACRO_DEFUN_VOID (SET_SYMBOL_VAL
,
1742 (struct Lisp_Symbol
*sym
, Lisp_Object v
), (sym
, v
))
1745 SET_SYMBOL_ALIAS (struct Lisp_Symbol
*sym
, struct Lisp_Symbol
*v
)
1747 eassert (sym
->redirect
== SYMBOL_VARALIAS
);
1751 SET_SYMBOL_BLV (struct Lisp_Symbol
*sym
, struct Lisp_Buffer_Local_Value
*v
)
1753 eassert (sym
->redirect
== SYMBOL_LOCALIZED
);
1757 SET_SYMBOL_FWD (struct Lisp_Symbol
*sym
, union Lisp_Fwd
*v
)
1759 eassert (sym
->redirect
== SYMBOL_FORWARDED
);
1764 SYMBOL_NAME (Lisp_Object sym
)
1766 return XSYMBOL (sym
)->name
;
1769 /* Value is true if SYM is an interned symbol. */
1772 SYMBOL_INTERNED_P (Lisp_Object sym
)
1774 return XSYMBOL (sym
)->interned
!= SYMBOL_UNINTERNED
;
1777 /* Value is true if SYM is interned in initial_obarray. */
1780 SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (Lisp_Object sym
)
1782 return XSYMBOL (sym
)->interned
== SYMBOL_INTERNED_IN_INITIAL_OBARRAY
;
1785 /* Value is non-zero if symbol is considered a constant, i.e. its
1786 value cannot be changed (there is an exception for keyword symbols,
1787 whose value can be set to the keyword symbol itself). */
1789 LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P
, int, (Lisp_Object sym
), (sym
))
1791 /* Placeholder for make-docfile to process. The actual symbol
1792 definition is done by lread.c's defsym. */
1793 #define DEFSYM(sym, name) /* empty */
1796 /***********************************************************************
1798 ***********************************************************************/
1800 /* The structure of a Lisp hash table. */
1802 struct hash_table_test
1804 /* Name of the function used to compare keys. */
1807 /* User-supplied hash function, or nil. */
1808 Lisp_Object user_hash_function
;
1810 /* User-supplied key comparison function, or nil. */
1811 Lisp_Object user_cmp_function
;
1813 /* C function to compare two keys. */
1814 bool (*cmpfn
) (struct hash_table_test
*t
, Lisp_Object
, Lisp_Object
);
1816 /* C function to compute hash code. */
1817 EMACS_UINT (*hashfn
) (struct hash_table_test
*t
, Lisp_Object
);
1820 struct Lisp_Hash_Table
1822 /* This is for Lisp; the hash table code does not refer to it. */
1823 struct vectorlike_header header
;
1825 /* Nil if table is non-weak. Otherwise a symbol describing the
1826 weakness of the table. */
1829 /* When the table is resized, and this is an integer, compute the
1830 new size by adding this to the old size. If a float, compute the
1831 new size by multiplying the old size with this factor. */
1832 Lisp_Object rehash_size
;
1834 /* Resize hash table when number of entries/ table size is >= this
1836 Lisp_Object rehash_threshold
;
1838 /* Vector of hash codes. If hash[I] is nil, this means that the
1839 I-th entry is unused. */
1842 /* Vector used to chain entries. If entry I is free, next[I] is the
1843 entry number of the next free item. If entry I is non-free,
1844 next[I] is the index of the next entry in the collision chain. */
1847 /* Index of first free entry in free list. */
1848 Lisp_Object next_free
;
1850 /* Bucket vector. A non-nil entry is the index of the first item in
1851 a collision chain. This vector's size can be larger than the
1852 hash table size to reduce collisions. */
1855 /* Only the fields above are traced normally by the GC. The ones below
1856 `count' are special and are either ignored by the GC or traced in
1857 a special way (e.g. because of weakness). */
1859 /* Number of key/value entries in the table. */
1862 /* Vector of keys and values. The key of item I is found at index
1863 2 * I, the value is found at index 2 * I + 1.
1864 This is gc_marked specially if the table is weak. */
1865 Lisp_Object key_and_value
;
1867 /* The comparison and hash functions. */
1868 struct hash_table_test test
;
1870 /* Next weak hash table if this is a weak hash table. The head
1871 of the list is in weak_hash_tables. */
1872 struct Lisp_Hash_Table
*next_weak
;
1876 INLINE
struct Lisp_Hash_Table
*
1877 XHASH_TABLE (Lisp_Object a
)
1879 return XUNTAG (a
, Lisp_Vectorlike
);
1882 #define XSET_HASH_TABLE(VAR, PTR) \
1883 (XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE))
1886 HASH_TABLE_P (Lisp_Object a
)
1888 return PSEUDOVECTORP (a
, PVEC_HASH_TABLE
);
1891 /* Value is the key part of entry IDX in hash table H. */
1893 HASH_KEY (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
)
1895 return AREF (h
->key_and_value
, 2 * idx
);
1898 /* Value is the value part of entry IDX in hash table H. */
1900 HASH_VALUE (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
)
1902 return AREF (h
->key_and_value
, 2 * idx
+ 1);
1905 /* Value is the index of the next entry following the one at IDX
1908 HASH_NEXT (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
)
1910 return AREF (h
->next
, idx
);
1913 /* Value is the hash code computed for entry IDX in hash table H. */
1915 HASH_HASH (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
)
1917 return AREF (h
->hash
, idx
);
1920 /* Value is the index of the element in hash table H that is the
1921 start of the collision list at index IDX in the index vector of H. */
1923 HASH_INDEX (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
)
1925 return AREF (h
->index
, idx
);
1928 /* Value is the size of hash table H. */
1930 HASH_TABLE_SIZE (struct Lisp_Hash_Table
*h
)
1932 return ASIZE (h
->next
);
1935 /* Default size for hash tables if not specified. */
1937 enum DEFAULT_HASH_SIZE
{ DEFAULT_HASH_SIZE
= 65 };
1939 /* Default threshold specifying when to resize a hash table. The
1940 value gives the ratio of current entries in the hash table and the
1941 size of the hash table. */
1943 static double const DEFAULT_REHASH_THRESHOLD
= 0.8;
1945 /* Default factor by which to increase the size of a hash table. */
1947 static double const DEFAULT_REHASH_SIZE
= 1.5;
1949 /* Combine two integers X and Y for hashing. The result might not fit
1950 into a Lisp integer. */
1953 sxhash_combine (EMACS_UINT x
, EMACS_UINT y
)
1955 return (x
<< 4) + (x
>> (BITS_PER_EMACS_INT
- 4)) + y
;
1958 /* Hash X, returning a value that fits into a fixnum. */
1961 SXHASH_REDUCE (EMACS_UINT x
)
1963 return (x
^ x
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
)) & INTMASK
;
1966 /* These structures are used for various misc types. */
1968 struct Lisp_Misc_Any
/* Supertype of all Misc types. */
1970 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_??? */
1971 bool_bf gcmarkbit
: 1;
1972 unsigned spacer
: 15;
1977 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Marker */
1978 bool_bf gcmarkbit
: 1;
1979 unsigned spacer
: 13;
1980 /* This flag is temporarily used in the functions
1981 decode/encode_coding_object to record that the marker position
1982 must be adjusted after the conversion. */
1983 bool_bf need_adjustment
: 1;
1984 /* True means normal insertion at the marker's position
1985 leaves the marker after the inserted text. */
1986 bool_bf insertion_type
: 1;
1987 /* This is the buffer that the marker points into, or 0 if it points nowhere.
1988 Note: a chain of markers can contain markers pointing into different
1989 buffers (the chain is per buffer_text rather than per buffer, so it's
1990 shared between indirect buffers). */
1991 /* This is used for (other than NULL-checking):
1993 - Fset_marker: check eq(oldbuf, newbuf) to avoid unchain+rechain.
1994 - unchain_marker: to find the list from which to unchain.
1995 - Fkill_buffer: to only unchain the markers of current indirect buffer.
1997 struct buffer
*buffer
;
1999 /* The remaining fields are meaningless in a marker that
2000 does not point anywhere. */
2002 /* For markers that point somewhere,
2003 this is used to chain of all the markers in a given buffer. */
2004 /* We could remove it and use an array in buffer_text instead.
2005 That would also allow to preserve it ordered. */
2006 struct Lisp_Marker
*next
;
2007 /* This is the char position where the marker points. */
2009 /* This is the byte position.
2010 It's mostly used as a charpos<->bytepos cache (i.e. it's not directly
2011 used to implement the functionality of markers, but rather to (ab)use
2012 markers as a cache for char<->byte mappings). */
2016 /* START and END are markers in the overlay's buffer, and
2017 PLIST is the overlay's property list. */
2019 /* An overlay's real data content is:
2021 - buffer (really there are two buffer pointers, one per marker,
2022 and both points to the same buffer)
2023 - insertion type of both ends (per-marker fields)
2024 - start & start byte (of start marker)
2025 - end & end byte (of end marker)
2026 - next (singly linked list of overlays)
2027 - next fields of start and end markers (singly linked list of markers).
2028 I.e. 9words plus 2 bits, 3words of which are for external linked lists.
2031 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Overlay */
2032 bool_bf gcmarkbit
: 1;
2033 unsigned spacer
: 15;
2034 struct Lisp_Overlay
*next
;
2040 /* Types of data which may be saved in a Lisp_Save_Value. */
2051 /* Number of bits needed to store one of the above values. */
2052 enum { SAVE_SLOT_BITS
= 3 };
2054 /* Number of slots in a save value where save_type is nonzero. */
2055 enum { SAVE_VALUE_SLOTS
= 4 };
2057 /* Bit-width and values for struct Lisp_Save_Value's save_type member. */
2059 enum { SAVE_TYPE_BITS
= SAVE_VALUE_SLOTS
* SAVE_SLOT_BITS
+ 1 };
2063 SAVE_TYPE_INT_INT
= SAVE_INTEGER
+ (SAVE_INTEGER
<< SAVE_SLOT_BITS
),
2064 SAVE_TYPE_INT_INT_INT
2065 = (SAVE_INTEGER
+ (SAVE_TYPE_INT_INT
<< SAVE_SLOT_BITS
)),
2066 SAVE_TYPE_OBJ_OBJ
= SAVE_OBJECT
+ (SAVE_OBJECT
<< SAVE_SLOT_BITS
),
2067 SAVE_TYPE_OBJ_OBJ_OBJ
= SAVE_OBJECT
+ (SAVE_TYPE_OBJ_OBJ
<< SAVE_SLOT_BITS
),
2068 SAVE_TYPE_OBJ_OBJ_OBJ_OBJ
2069 = SAVE_OBJECT
+ (SAVE_TYPE_OBJ_OBJ_OBJ
<< SAVE_SLOT_BITS
),
2070 SAVE_TYPE_PTR_INT
= SAVE_POINTER
+ (SAVE_INTEGER
<< SAVE_SLOT_BITS
),
2071 SAVE_TYPE_PTR_OBJ
= SAVE_POINTER
+ (SAVE_OBJECT
<< SAVE_SLOT_BITS
),
2072 SAVE_TYPE_PTR_PTR
= SAVE_POINTER
+ (SAVE_POINTER
<< SAVE_SLOT_BITS
),
2073 SAVE_TYPE_FUNCPTR_PTR_OBJ
2074 = SAVE_FUNCPOINTER
+ (SAVE_TYPE_PTR_OBJ
<< SAVE_SLOT_BITS
),
2076 /* This has an extra bit indicating it's raw memory. */
2077 SAVE_TYPE_MEMORY
= SAVE_TYPE_PTR_INT
+ (1 << (SAVE_TYPE_BITS
- 1))
2080 /* Special object used to hold a different values for later use.
2082 This is mostly used to package C integers and pointers to call
2083 record_unwind_protect when two or more values need to be saved.
2087 struct my_data *md = get_my_data ();
2088 ptrdiff_t mi = get_my_integer ();
2089 record_unwind_protect (my_unwind, make_save_ptr_int (md, mi));
2092 Lisp_Object my_unwind (Lisp_Object arg)
2094 struct my_data *md = XSAVE_POINTER (arg, 0);
2095 ptrdiff_t mi = XSAVE_INTEGER (arg, 1);
2099 If ENABLE_CHECKING is in effect, XSAVE_xxx macros do type checking of the
2100 saved objects and raise eassert if type of the saved object doesn't match
2101 the type which is extracted. In the example above, XSAVE_INTEGER (arg, 2)
2102 and XSAVE_OBJECT (arg, 0) are wrong because nothing was saved in slot 2 and
2103 slot 0 is a pointer. */
2105 typedef void (*voidfuncptr
) (void);
2107 struct Lisp_Save_Value
2109 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Save_Value */
2110 bool_bf gcmarkbit
: 1;
2111 unsigned spacer
: 32 - (16 + 1 + SAVE_TYPE_BITS
);
2113 /* V->data may hold up to SAVE_VALUE_SLOTS entries. The type of
2114 V's data entries are determined by V->save_type. E.g., if
2115 V->save_type == SAVE_TYPE_PTR_OBJ, V->data[0] is a pointer,
2116 V->data[1] is an integer, and V's other data entries are unused.
2118 If V->save_type == SAVE_TYPE_MEMORY, V->data[0].pointer is the address of
2119 a memory area containing V->data[1].integer potential Lisp_Objects. */
2120 ENUM_BF (Lisp_Save_Type
) save_type
: SAVE_TYPE_BITS
;
2123 voidfuncptr funcpointer
;
2126 } data
[SAVE_VALUE_SLOTS
];
2129 /* Return the type of V's Nth saved value. */
2131 save_type (struct Lisp_Save_Value
*v
, int n
)
2133 eassert (0 <= n
&& n
< SAVE_VALUE_SLOTS
);
2134 return (v
->save_type
>> (SAVE_SLOT_BITS
* n
) & ((1 << SAVE_SLOT_BITS
) - 1));
2137 /* Get and set the Nth saved pointer. */
2140 XSAVE_POINTER (Lisp_Object obj
, int n
)
2142 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_POINTER
);
2143 return XSAVE_VALUE (obj
)->data
[n
].pointer
;
2146 set_save_pointer (Lisp_Object obj
, int n
, void *val
)
2148 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_POINTER
);
2149 XSAVE_VALUE (obj
)->data
[n
].pointer
= val
;
2152 XSAVE_FUNCPOINTER (Lisp_Object obj
, int n
)
2154 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_FUNCPOINTER
);
2155 return XSAVE_VALUE (obj
)->data
[n
].funcpointer
;
2158 /* Likewise for the saved integer. */
2161 XSAVE_INTEGER (Lisp_Object obj
, int n
)
2163 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_INTEGER
);
2164 return XSAVE_VALUE (obj
)->data
[n
].integer
;
2167 set_save_integer (Lisp_Object obj
, int n
, ptrdiff_t val
)
2169 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_INTEGER
);
2170 XSAVE_VALUE (obj
)->data
[n
].integer
= val
;
2173 /* Extract Nth saved object. */
2176 XSAVE_OBJECT (Lisp_Object obj
, int n
)
2178 eassert (save_type (XSAVE_VALUE (obj
), n
) == SAVE_OBJECT
);
2179 return XSAVE_VALUE (obj
)->data
[n
].object
;
2182 /* A miscellaneous object, when it's on the free list. */
2185 ENUM_BF (Lisp_Misc_Type
) type
: 16; /* = Lisp_Misc_Free */
2186 bool_bf gcmarkbit
: 1;
2187 unsigned spacer
: 15;
2188 union Lisp_Misc
*chain
;
2191 /* To get the type field of a union Lisp_Misc, use XMISCTYPE.
2192 It uses one of these struct subtypes to get the type field. */
2196 struct Lisp_Misc_Any u_any
; /* Supertype of all Misc types. */
2197 struct Lisp_Free u_free
;
2198 struct Lisp_Marker u_marker
;
2199 struct Lisp_Overlay u_overlay
;
2200 struct Lisp_Save_Value u_save_value
;
2203 INLINE
union Lisp_Misc
*
2204 XMISC (Lisp_Object a
)
2206 return XUNTAG (a
, Lisp_Misc
);
2209 INLINE
struct Lisp_Misc_Any
*
2210 XMISCANY (Lisp_Object a
)
2212 eassert (MISCP (a
));
2213 return & XMISC (a
)->u_any
;
2216 INLINE
enum Lisp_Misc_Type
2217 XMISCTYPE (Lisp_Object a
)
2219 return XMISCANY (a
)->type
;
2222 INLINE
struct Lisp_Marker
*
2223 XMARKER (Lisp_Object a
)
2225 eassert (MARKERP (a
));
2226 return & XMISC (a
)->u_marker
;
2229 INLINE
struct Lisp_Overlay
*
2230 XOVERLAY (Lisp_Object a
)
2232 eassert (OVERLAYP (a
));
2233 return & XMISC (a
)->u_overlay
;
2236 INLINE
struct Lisp_Save_Value
*
2237 XSAVE_VALUE (Lisp_Object a
)
2239 eassert (SAVE_VALUEP (a
));
2240 return & XMISC (a
)->u_save_value
;
2243 /* Forwarding pointer to an int variable.
2244 This is allowed only in the value cell of a symbol,
2245 and it means that the symbol's value really lives in the
2246 specified int variable. */
2249 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Int */
2253 /* Boolean forwarding pointer to an int variable.
2254 This is like Lisp_Intfwd except that the ostensible
2255 "value" of the symbol is t if the bool variable is true,
2256 nil if it is false. */
2259 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Bool */
2263 /* Forwarding pointer to a Lisp_Object variable.
2264 This is allowed only in the value cell of a symbol,
2265 and it means that the symbol's value really lives in the
2266 specified variable. */
2269 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Obj */
2270 Lisp_Object
*objvar
;
2273 /* Like Lisp_Objfwd except that value lives in a slot in the
2274 current buffer. Value is byte index of slot within buffer. */
2275 struct Lisp_Buffer_Objfwd
2277 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Buffer_Obj */
2279 /* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */
2280 Lisp_Object predicate
;
2283 /* struct Lisp_Buffer_Local_Value is used in a symbol value cell when
2284 the symbol has buffer-local or frame-local bindings. (Exception:
2285 some buffer-local variables are built-in, with their values stored
2286 in the buffer structure itself. They are handled differently,
2287 using struct Lisp_Buffer_Objfwd.)
2289 The `realvalue' slot holds the variable's current value, or a
2290 forwarding pointer to where that value is kept. This value is the
2291 one that corresponds to the loaded binding. To read or set the
2292 variable, you must first make sure the right binding is loaded;
2293 then you can access the value in (or through) `realvalue'.
2295 `buffer' and `frame' are the buffer and frame for which the loaded
2296 binding was found. If those have changed, to make sure the right
2297 binding is loaded it is necessary to find which binding goes with
2298 the current buffer and selected frame, then load it. To load it,
2299 first unload the previous binding, then copy the value of the new
2300 binding into `realvalue' (or through it). Also update
2301 LOADED-BINDING to point to the newly loaded binding.
2303 `local_if_set' indicates that merely setting the variable creates a
2304 local binding for the current buffer. Otherwise the latter, setting
2305 the variable does not do that; only make-local-variable does that. */
2307 struct Lisp_Buffer_Local_Value
2309 /* True means that merely setting the variable creates a local
2310 binding for the current buffer. */
2311 bool_bf local_if_set
: 1;
2312 /* True means this variable can have frame-local bindings, otherwise, it is
2313 can have buffer-local bindings. The two cannot be combined. */
2314 bool_bf frame_local
: 1;
2315 /* True means that the binding now loaded was found.
2316 Presumably equivalent to (defcell!=valcell). */
2318 /* If non-NULL, a forwarding to the C var where it should also be set. */
2319 union Lisp_Fwd
*fwd
; /* Should never be (Buffer|Kboard)_Objfwd. */
2320 /* The buffer or frame for which the loaded binding was found. */
2322 /* A cons cell that holds the default value. It has the form
2323 (SYMBOL . DEFAULT-VALUE). */
2324 Lisp_Object defcell
;
2325 /* The cons cell from `where's parameter alist.
2326 It always has the form (SYMBOL . VALUE)
2327 Note that if `forward' is non-nil, VALUE may be out of date.
2328 Also if the currently loaded binding is the default binding, then
2329 this is `eq'ual to defcell. */
2330 Lisp_Object valcell
;
2333 /* Like Lisp_Objfwd except that value lives in a slot in the
2335 struct Lisp_Kboard_Objfwd
2337 enum Lisp_Fwd_Type type
; /* = Lisp_Fwd_Kboard_Obj */
2343 struct Lisp_Intfwd u_intfwd
;
2344 struct Lisp_Boolfwd u_boolfwd
;
2345 struct Lisp_Objfwd u_objfwd
;
2346 struct Lisp_Buffer_Objfwd u_buffer_objfwd
;
2347 struct Lisp_Kboard_Objfwd u_kboard_objfwd
;
2350 INLINE
enum Lisp_Fwd_Type
2351 XFWDTYPE (union Lisp_Fwd
*a
)
2353 return a
->u_intfwd
.type
;
2356 INLINE
struct Lisp_Buffer_Objfwd
*
2357 XBUFFER_OBJFWD (union Lisp_Fwd
*a
)
2359 eassert (BUFFER_OBJFWDP (a
));
2360 return &a
->u_buffer_objfwd
;
2363 /* Lisp floating point type. */
2369 struct Lisp_Float
*chain
;
2374 XFLOAT_DATA (Lisp_Object f
)
2376 return XFLOAT (f
)->u
.data
;
2379 /* Most hosts nowadays use IEEE floating point, so they use IEC 60559
2380 representations, have infinities and NaNs, and do not trap on
2381 exceptions. Define IEEE_FLOATING_POINT if this host is one of the
2382 typical ones. The C11 macro __STDC_IEC_559__ is close to what is
2383 wanted here, but is not quite right because Emacs does not require
2384 all the features of C11 Annex F (and does not require C11 at all,
2385 for that matter). */
2389 = (FLT_RADIX
== 2 && FLT_MANT_DIG
== 24
2390 && FLT_MIN_EXP
== -125 && FLT_MAX_EXP
== 128)
2393 /* A character, declared with the following typedef, is a member
2394 of some character set associated with the current buffer. */
2395 #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */
2397 typedef unsigned char UCHAR
;
2400 /* Meanings of slots in a Lisp_Compiled: */
2404 COMPILED_ARGLIST
= 0,
2405 COMPILED_BYTECODE
= 1,
2406 COMPILED_CONSTANTS
= 2,
2407 COMPILED_STACK_DEPTH
= 3,
2408 COMPILED_DOC_STRING
= 4,
2409 COMPILED_INTERACTIVE
= 5
2412 /* Flag bits in a character. These also get used in termhooks.h.
2413 Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE
2414 (MUlti-Lingual Emacs) might need 22 bits for the character value
2415 itself, so we probably shouldn't use any bits lower than 0x0400000. */
2418 CHAR_ALT
= 0x0400000,
2419 CHAR_SUPER
= 0x0800000,
2420 CHAR_HYPER
= 0x1000000,
2421 CHAR_SHIFT
= 0x2000000,
2422 CHAR_CTL
= 0x4000000,
2423 CHAR_META
= 0x8000000,
2425 CHAR_MODIFIER_MASK
=
2426 CHAR_ALT
| CHAR_SUPER
| CHAR_HYPER
| CHAR_SHIFT
| CHAR_CTL
| CHAR_META
,
2428 /* Actually, the current Emacs uses 22 bits for the character value
2433 /* Data type checking. */
2435 LISP_MACRO_DEFUN (NILP
, bool, (Lisp_Object x
), (x
))
2438 NUMBERP (Lisp_Object x
)
2440 return INTEGERP (x
) || FLOATP (x
);
2443 NATNUMP (Lisp_Object x
)
2445 return INTEGERP (x
) && 0 <= XINT (x
);
2449 RANGED_INTEGERP (intmax_t lo
, Lisp_Object x
, intmax_t hi
)
2451 return INTEGERP (x
) && lo
<= XINT (x
) && XINT (x
) <= hi
;
2454 #define TYPE_RANGED_INTEGERP(type, x) \
2456 && (TYPE_SIGNED (type) ? TYPE_MINIMUM (type) <= XINT (x) : 0 <= XINT (x)) \
2457 && XINT (x) <= TYPE_MAXIMUM (type))
2459 LISP_MACRO_DEFUN (CONSP
, bool, (Lisp_Object x
), (x
))
2460 LISP_MACRO_DEFUN (FLOATP
, bool, (Lisp_Object x
), (x
))
2461 LISP_MACRO_DEFUN (MISCP
, bool, (Lisp_Object x
), (x
))
2462 LISP_MACRO_DEFUN (SYMBOLP
, bool, (Lisp_Object x
), (x
))
2463 LISP_MACRO_DEFUN (INTEGERP
, bool, (Lisp_Object x
), (x
))
2464 LISP_MACRO_DEFUN (VECTORLIKEP
, bool, (Lisp_Object x
), (x
))
2465 LISP_MACRO_DEFUN (MARKERP
, bool, (Lisp_Object x
), (x
))
2468 STRINGP (Lisp_Object x
)
2470 return XTYPE (x
) == Lisp_String
;
2473 VECTORP (Lisp_Object x
)
2475 return VECTORLIKEP (x
) && ! (ASIZE (x
) & PSEUDOVECTOR_FLAG
);
2478 OVERLAYP (Lisp_Object x
)
2480 return MISCP (x
) && XMISCTYPE (x
) == Lisp_Misc_Overlay
;
2483 SAVE_VALUEP (Lisp_Object x
)
2485 return MISCP (x
) && XMISCTYPE (x
) == Lisp_Misc_Save_Value
;
2489 AUTOLOADP (Lisp_Object x
)
2491 return CONSP (x
) && EQ (Qautoload
, XCAR (x
));
2495 BUFFER_OBJFWDP (union Lisp_Fwd
*a
)
2497 return XFWDTYPE (a
) == Lisp_Fwd_Buffer_Obj
;
2501 PSEUDOVECTOR_TYPEP (struct vectorlike_header
*a
, int code
)
2503 return ((a
->size
& (PSEUDOVECTOR_FLAG
| PVEC_TYPE_MASK
))
2504 == (PSEUDOVECTOR_FLAG
| (code
<< PSEUDOVECTOR_AREA_BITS
)));
2507 /* True if A is a pseudovector whose code is CODE. */
2509 PSEUDOVECTORP (Lisp_Object a
, int code
)
2511 if (! VECTORLIKEP (a
))
2515 /* Converting to struct vectorlike_header * avoids aliasing issues. */
2516 struct vectorlike_header
*h
= XUNTAG (a
, Lisp_Vectorlike
);
2517 return PSEUDOVECTOR_TYPEP (h
, code
);
2522 /* Test for specific pseudovector types. */
2525 WINDOW_CONFIGURATIONP (Lisp_Object a
)
2527 return PSEUDOVECTORP (a
, PVEC_WINDOW_CONFIGURATION
);
2531 PROCESSP (Lisp_Object a
)
2533 return PSEUDOVECTORP (a
, PVEC_PROCESS
);
2537 WINDOWP (Lisp_Object a
)
2539 return PSEUDOVECTORP (a
, PVEC_WINDOW
);
2543 TERMINALP (Lisp_Object a
)
2545 return PSEUDOVECTORP (a
, PVEC_TERMINAL
);
2549 SUBRP (Lisp_Object a
)
2551 return PSEUDOVECTORP (a
, PVEC_SUBR
);
2555 COMPILEDP (Lisp_Object a
)
2557 return PSEUDOVECTORP (a
, PVEC_COMPILED
);
2561 BUFFERP (Lisp_Object a
)
2563 return PSEUDOVECTORP (a
, PVEC_BUFFER
);
2567 CHAR_TABLE_P (Lisp_Object a
)
2569 return PSEUDOVECTORP (a
, PVEC_CHAR_TABLE
);
2573 SUB_CHAR_TABLE_P (Lisp_Object a
)
2575 return PSEUDOVECTORP (a
, PVEC_SUB_CHAR_TABLE
);
2579 BOOL_VECTOR_P (Lisp_Object a
)
2581 return PSEUDOVECTORP (a
, PVEC_BOOL_VECTOR
);
2585 FRAMEP (Lisp_Object a
)
2587 return PSEUDOVECTORP (a
, PVEC_FRAME
);
2590 /* Test for image (image . spec) */
2592 IMAGEP (Lisp_Object x
)
2594 return CONSP (x
) && EQ (XCAR (x
), Qimage
);
2599 ARRAYP (Lisp_Object x
)
2601 return VECTORP (x
) || STRINGP (x
) || CHAR_TABLE_P (x
) || BOOL_VECTOR_P (x
);
2605 CHECK_LIST (Lisp_Object x
)
2607 CHECK_TYPE (CONSP (x
) || NILP (x
), Qlistp
, x
);
2610 LISP_MACRO_DEFUN_VOID (CHECK_LIST_CONS
, (Lisp_Object x
, Lisp_Object y
), (x
, y
))
2611 LISP_MACRO_DEFUN_VOID (CHECK_SYMBOL
, (Lisp_Object x
), (x
))
2612 LISP_MACRO_DEFUN_VOID (CHECK_NUMBER
, (Lisp_Object x
), (x
))
2615 CHECK_STRING (Lisp_Object x
)
2617 CHECK_TYPE (STRINGP (x
), Qstringp
, x
);
2620 CHECK_STRING_CAR (Lisp_Object x
)
2622 CHECK_TYPE (STRINGP (XCAR (x
)), Qstringp
, XCAR (x
));
2625 CHECK_CONS (Lisp_Object x
)
2627 CHECK_TYPE (CONSP (x
), Qconsp
, x
);
2630 CHECK_VECTOR (Lisp_Object x
)
2632 CHECK_TYPE (VECTORP (x
), Qvectorp
, x
);
2635 CHECK_BOOL_VECTOR (Lisp_Object x
)
2637 CHECK_TYPE (BOOL_VECTOR_P (x
), Qbool_vector_p
, x
);
2639 /* This is a bit special because we always need size afterwards. */
2641 CHECK_VECTOR_OR_STRING (Lisp_Object x
)
2647 wrong_type_argument (Qarrayp
, x
);
2650 CHECK_ARRAY (Lisp_Object x
, Lisp_Object predicate
)
2652 CHECK_TYPE (ARRAYP (x
), predicate
, x
);
2655 CHECK_BUFFER (Lisp_Object x
)
2657 CHECK_TYPE (BUFFERP (x
), Qbufferp
, x
);
2660 CHECK_WINDOW (Lisp_Object x
)
2662 CHECK_TYPE (WINDOWP (x
), Qwindowp
, x
);
2666 CHECK_PROCESS (Lisp_Object x
)
2668 CHECK_TYPE (PROCESSP (x
), Qprocessp
, x
);
2672 CHECK_NATNUM (Lisp_Object x
)
2674 CHECK_TYPE (NATNUMP (x
), Qwholenump
, x
);
2677 #define CHECK_RANGED_INTEGER(x, lo, hi) \
2680 if (! ((lo) <= XINT (x) && XINT (x) <= (hi))) \
2681 args_out_of_range_3 \
2683 make_number ((lo) < 0 && (lo) < MOST_NEGATIVE_FIXNUM \
2684 ? MOST_NEGATIVE_FIXNUM \
2686 make_number (min (hi, MOST_POSITIVE_FIXNUM))); \
2688 #define CHECK_TYPE_RANGED_INTEGER(type, x) \
2690 if (TYPE_SIGNED (type)) \
2691 CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \
2693 CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \
2696 #define CHECK_NUMBER_COERCE_MARKER(x) \
2698 if (MARKERP ((x))) \
2699 XSETFASTINT (x, marker_position (x)); \
2701 CHECK_TYPE (INTEGERP (x), Qinteger_or_marker_p, x); \
2705 XFLOATINT (Lisp_Object n
)
2707 return extract_float (n
);
2711 CHECK_NUMBER_OR_FLOAT (Lisp_Object x
)
2713 CHECK_TYPE (FLOATP (x
) || INTEGERP (x
), Qnumberp
, x
);
2716 #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x) \
2719 XSETFASTINT (x, marker_position (x)); \
2721 CHECK_TYPE (INTEGERP (x) || FLOATP (x), Qnumber_or_marker_p, x); \
2724 /* Since we can't assign directly to the CAR or CDR fields of a cons
2725 cell, use these when checking that those fields contain numbers. */
2727 CHECK_NUMBER_CAR (Lisp_Object x
)
2729 Lisp_Object tmp
= XCAR (x
);
2735 CHECK_NUMBER_CDR (Lisp_Object x
)
2737 Lisp_Object tmp
= XCDR (x
);
2742 /* Define a built-in function for calling from Lisp.
2743 `lname' should be the name to give the function in Lisp,
2744 as a null-terminated C string.
2745 `fnname' should be the name of the function in C.
2746 By convention, it starts with F.
2747 `sname' should be the name for the C constant structure
2748 that records information on this function for internal use.
2749 By convention, it should be the same as `fnname' but with S instead of F.
2750 It's too bad that C macros can't compute this from `fnname'.
2751 `minargs' should be a number, the minimum number of arguments allowed.
2752 `maxargs' should be a number, the maximum number of arguments allowed,
2753 or else MANY or UNEVALLED.
2754 MANY means pass a vector of evaluated arguments,
2755 in the form of an integer number-of-arguments
2756 followed by the address of a vector of Lisp_Objects
2757 which contains the argument values.
2758 UNEVALLED means pass the list of unevaluated arguments
2759 `intspec' says how interactive arguments are to be fetched.
2760 If the string starts with a `(', `intspec' is evaluated and the resulting
2761 list is the list of arguments.
2762 If it's a string that doesn't start with `(', the value should follow
2763 the one of the doc string for `interactive'.
2764 A null string means call interactively with no arguments.
2765 `doc' is documentation for the user. */
2767 /* This version of DEFUN declares a function prototype with the right
2768 arguments, so we can catch errors with maxargs at compile-time. */
2770 #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
2771 Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \
2772 static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
2773 { { (PVEC_SUBR << PSEUDOVECTOR_AREA_BITS) \
2774 | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)) }, \
2775 { (Lisp_Object (__cdecl *)(void))fnname }, \
2776 minargs, maxargs, lname, intspec, 0}; \
2778 #else /* not _MSC_VER */
2779 #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \
2780 static struct Lisp_Subr alignas (GCALIGNMENT) sname = \
2781 { { PVEC_SUBR << PSEUDOVECTOR_AREA_BITS }, \
2782 { .a ## maxargs = fnname }, \
2783 minargs, maxargs, lname, intspec, 0}; \
2787 /* True if OBJ is a Lisp function. */
2789 FUNCTIONP (Lisp_Object obj
)
2791 return functionp (obj
);
2795 is how we define the symbol for function `name' at start-up time. */
2796 extern void defsubr (struct Lisp_Subr
*);
2804 extern void defvar_lisp (struct Lisp_Objfwd
*, const char *, Lisp_Object
*);
2805 extern void defvar_lisp_nopro (struct Lisp_Objfwd
*, const char *, Lisp_Object
*);
2806 extern void defvar_bool (struct Lisp_Boolfwd
*, const char *, bool *);
2807 extern void defvar_int (struct Lisp_Intfwd
*, const char *, EMACS_INT
*);
2808 extern void defvar_kboard (struct Lisp_Kboard_Objfwd
*, const char *, int);
2810 /* Macros we use to define forwarded Lisp variables.
2811 These are used in the syms_of_FILENAME functions.
2813 An ordinary (not in buffer_defaults, per-buffer, or per-keyboard)
2814 lisp variable is actually a field in `struct emacs_globals'. The
2815 field's name begins with "f_", which is a convention enforced by
2816 these macros. Each such global has a corresponding #define in
2817 globals.h; the plain name should be used in the code.
2819 E.g., the global "cons_cells_consed" is declared as "int
2820 f_cons_cells_consed" in globals.h, but there is a define:
2822 #define cons_cells_consed globals.f_cons_cells_consed
2824 All C code uses the `cons_cells_consed' name. This is all done
2825 this way to support indirection for multi-threaded Emacs. */
2827 #define DEFVAR_LISP(lname, vname, doc) \
2829 static struct Lisp_Objfwd o_fwd; \
2830 defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \
2832 #define DEFVAR_LISP_NOPRO(lname, vname, doc) \
2834 static struct Lisp_Objfwd o_fwd; \
2835 defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \
2837 #define DEFVAR_BOOL(lname, vname, doc) \
2839 static struct Lisp_Boolfwd b_fwd; \
2840 defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \
2842 #define DEFVAR_INT(lname, vname, doc) \
2844 static struct Lisp_Intfwd i_fwd; \
2845 defvar_int (&i_fwd, lname, &globals.f_ ## vname); \
2848 #define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \
2850 static struct Lisp_Objfwd o_fwd; \
2851 defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \
2854 #define DEFVAR_KBOARD(lname, vname, doc) \
2856 static struct Lisp_Kboard_Objfwd ko_fwd; \
2857 defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \
2860 /* Save and restore the instruction and environment pointers,
2861 without affecting the signal mask. */
2864 typedef jmp_buf sys_jmp_buf
;
2865 # define sys_setjmp(j) _setjmp (j)
2866 # define sys_longjmp(j, v) _longjmp (j, v)
2867 #elif defined HAVE_SIGSETJMP
2868 typedef sigjmp_buf sys_jmp_buf
;
2869 # define sys_setjmp(j) sigsetjmp (j, 0)
2870 # define sys_longjmp(j, v) siglongjmp (j, v)
2872 /* A platform that uses neither _longjmp nor siglongjmp; assume
2873 longjmp does not affect the sigmask. */
2874 typedef jmp_buf sys_jmp_buf
;
2875 # define sys_setjmp(j) setjmp (j)
2876 # define sys_longjmp(j, v) longjmp (j, v)
2880 /* Elisp uses several stacks:
2882 - the bytecode stack: used internally by the bytecode interpreter.
2883 Allocated from the C stack.
2884 - The specpdl stack: keeps track of active unwind-protect and
2885 dynamic-let-bindings. Allocated from the `specpdl' array, a manually
2887 - The handler stack: keeps track of active catch tags and condition-case
2888 handlers. Allocated in a manually managed stack implemented by a
2889 doubly-linked list allocated via xmalloc and never freed. */
2891 /* Structure for recording Lisp call stack for backtrace purposes. */
2893 /* The special binding stack holds the outer values of variables while
2894 they are bound by a function application or a let form, stores the
2895 code to be executed for unwind-protect forms.
2897 NOTE: The specbinding union is defined here, because SPECPDL_INDEX is
2898 used all over the place, needs to be fast, and needs to know the size of
2899 union specbinding. But only eval.c should access it. */
2902 SPECPDL_UNWIND
, /* An unwind_protect function on Lisp_Object. */
2903 SPECPDL_UNWIND_PTR
, /* Likewise, on void *. */
2904 SPECPDL_UNWIND_INT
, /* Likewise, on int. */
2905 SPECPDL_UNWIND_VOID
, /* Likewise, with no arg. */
2906 SPECPDL_BACKTRACE
, /* An element of the backtrace. */
2907 SPECPDL_LET
, /* A plain and simple dynamic let-binding. */
2908 /* Tags greater than SPECPDL_LET must be "subkinds" of LET. */
2909 SPECPDL_LET_LOCAL
, /* A buffer-local let-binding. */
2910 SPECPDL_LET_DEFAULT
/* A global binding for a localized var. */
2915 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2917 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2918 void (*func
) (Lisp_Object
);
2922 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2923 void (*func
) (void *);
2927 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2932 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2933 void (*func
) (void);
2936 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2937 /* `where' is not used in the case of SPECPDL_LET. */
2938 Lisp_Object symbol
, old_value
, where
;
2941 ENUM_BF (specbind_tag
) kind
: CHAR_BIT
;
2942 bool_bf debug_on_exit
: 1;
2943 Lisp_Object function
;
2949 extern union specbinding
*specpdl
;
2950 extern union specbinding
*specpdl_ptr
;
2951 extern ptrdiff_t specpdl_size
;
2954 SPECPDL_INDEX (void)
2956 return specpdl_ptr
- specpdl
;
2959 /* This structure helps implement the `catch/throw' and `condition-case/signal'
2960 control structures. A struct handler contains all the information needed to
2961 restore the state of the interpreter after a non-local jump.
2963 handler structures are chained together in a doubly linked list; the `next'
2964 member points to the next outer catchtag and the `nextfree' member points in
2965 the other direction to the next inner element (which is typically the next
2966 free element since we mostly use it on the deepest handler).
2968 A call like (throw TAG VAL) searches for a catchtag whose `tag_or_ch'
2969 member is TAG, and then unbinds to it. The `val' member is used to
2970 hold VAL while the stack is unwound; `val' is returned as the value
2973 All the other members are concerned with restoring the interpreter
2976 Members are volatile if their values need to survive _longjmp when
2977 a 'struct handler' is a local variable. */
2979 enum handlertype
{ CATCHER
, CONDITION_CASE
};
2983 enum handlertype type
;
2984 Lisp_Object tag_or_ch
;
2986 struct handler
*next
;
2987 struct handler
*nextfree
;
2989 /* The bytecode interpreter can have several handlers active at the same
2990 time, so when we longjmp to one of them, it needs to know which handler
2991 this was and what was the corresponding internal state. This is stored
2992 here, and when we longjmp we make sure that handlerlist points to the
2994 Lisp_Object
*bytecode_top
;
2997 /* Most global vars are reset to their value via the specpdl mechanism,
2998 but a few others are handled by storing their value here. */
2999 #if true /* GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS, but defined later. */
3000 struct gcpro
*gcpro
;
3003 EMACS_INT lisp_eval_depth
;
3005 int poll_suppress_count
;
3006 int interrupt_input_blocked
;
3007 struct byte_stack
*byte_stack
;
3010 /* Fill in the components of c, and put it on the list. */
3011 #define PUSH_HANDLER(c, tag_ch_val, handlertype) \
3012 if (handlerlist->nextfree) \
3013 (c) = handlerlist->nextfree; \
3016 (c) = xmalloc (sizeof (struct handler)); \
3017 (c)->nextfree = NULL; \
3018 handlerlist->nextfree = (c); \
3020 (c)->type = (handlertype); \
3021 (c)->tag_or_ch = (tag_ch_val); \
3023 (c)->next = handlerlist; \
3024 (c)->lisp_eval_depth = lisp_eval_depth; \
3025 (c)->pdlcount = SPECPDL_INDEX (); \
3026 (c)->poll_suppress_count = poll_suppress_count; \
3027 (c)->interrupt_input_blocked = interrupt_input_blocked;\
3028 (c)->gcpro = gcprolist; \
3029 (c)->byte_stack = byte_stack_list; \
3033 extern Lisp_Object memory_signal_data
;
3035 /* An address near the bottom of the stack.
3036 Tells GC how to save a copy of the stack. */
3037 extern char *stack_bottom
;
3039 /* Check quit-flag and quit if it is non-nil.
3040 Typing C-g does not directly cause a quit; it only sets Vquit_flag.
3041 So the program needs to do QUIT at times when it is safe to quit.
3042 Every loop that might run for a long time or might not exit
3043 ought to do QUIT at least once, at a safe place.
3044 Unless that is impossible, of course.
3045 But it is very desirable to avoid creating loops where QUIT is impossible.
3047 Exception: if you set immediate_quit to true,
3048 then the handler that responds to the C-g does the quit itself.
3049 This is a good thing to do around a loop that has no side effects
3050 and (in particular) cannot call arbitrary Lisp code.
3052 If quit-flag is set to `kill-emacs' the SIGINT handler has received
3053 a request to exit Emacs when it is safe to do. */
3055 extern void process_pending_signals (void);
3056 extern bool volatile pending_signals
;
3058 extern void process_quit_flag (void);
3061 if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \
3062 process_quit_flag (); \
3063 else if (pending_signals) \
3064 process_pending_signals (); \
3068 /* True if ought to quit now. */
3070 #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit))
3072 extern Lisp_Object Vascii_downcase_table
;
3073 extern Lisp_Object Vascii_canon_table
;
3075 /* Structure for recording stack slots that need marking. */
3077 /* This is a chain of structures, each of which points at a Lisp_Object
3078 variable whose value should be marked in garbage collection.
3079 Normally every link of the chain is an automatic variable of a function,
3080 and its `val' points to some argument or local variable of the function.
3081 On exit to the function, the chain is set back to the value it had on entry.
3082 This way, no link remains in the chain when the stack frame containing the
3085 Every function that can call Feval must protect in this fashion all
3086 Lisp_Object variables whose contents will be used again. */
3088 extern struct gcpro
*gcprolist
;
3094 /* Address of first protected variable. */
3095 volatile Lisp_Object
*var
;
3097 /* Number of consecutive protected variables. */
3101 /* File name where this record is used. */
3104 /* Line number in this file. */
3107 /* Index in the local chain of records. */
3110 /* Nesting level. */
3115 /* Values of GC_MARK_STACK during compilation:
3117 0 Use GCPRO as before
3118 1 Do the real thing, make GCPROs and UNGCPRO no-ops.
3119 2 Mark the stack, and check that everything GCPRO'd is
3121 3 Mark using GCPRO's, mark stack last, and count how many
3122 dead objects are kept alive.
3124 Formerly, method 0 was used. Currently, method 1 is used unless
3125 otherwise specified by hand when building, e.g.,
3126 "make CPPFLAGS='-DGC_MARK_STACK=GC_USE_GCPROS_AS_BEFORE'".
3127 Methods 2 and 3 are present mainly to debug the transition from 0 to 1. */
3129 #define GC_USE_GCPROS_AS_BEFORE 0
3130 #define GC_MAKE_GCPROS_NOOPS 1
3131 #define GC_MARK_STACK_CHECK_GCPROS 2
3132 #define GC_USE_GCPROS_CHECK_ZOMBIES 3
3134 #ifndef GC_MARK_STACK
3135 #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
3138 /* Whether we do the stack marking manually. */
3139 #define BYTE_MARK_STACK !(GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS \
3140 || GC_MARK_STACK == GC_MARK_STACK_CHECK_GCPROS)
3143 #if GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS
3145 /* Do something silly with gcproN vars just so gcc shuts up. */
3146 /* You get warnings from MIPSPro... */
3148 #define GCPRO1(varname) ((void) gcpro1)
3149 #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1)
3150 #define GCPRO3(varname1, varname2, varname3) \
3151 ((void) gcpro3, (void) gcpro2, (void) gcpro1)
3152 #define GCPRO4(varname1, varname2, varname3, varname4) \
3153 ((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
3154 #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
3155 ((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1)
3156 #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \
3157 ((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \
3159 #define GCPRO7(a, b, c, d, e, f, g) (GCPRO6 (a, b, c, d, e, f), (void) gcpro7)
3160 #define UNGCPRO ((void) 0)
3162 #else /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
3167 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3168 gcprolist = &gcpro1; }
3170 #define GCPRO2(a, b) \
3171 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3172 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3173 gcprolist = &gcpro2; }
3175 #define GCPRO3(a, b, c) \
3176 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3177 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3178 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3179 gcprolist = &gcpro3; }
3181 #define GCPRO4(a, b, c, d) \
3182 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3183 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3184 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3185 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3186 gcprolist = &gcpro4; }
3188 #define GCPRO5(a, b, c, d, e) \
3189 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3190 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3191 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3192 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3193 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3194 gcprolist = &gcpro5; }
3196 #define GCPRO6(a, b, c, d, e, f) \
3197 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3198 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3199 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3200 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3201 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3202 gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
3203 gcprolist = &gcpro6; }
3205 #define GCPRO7(a, b, c, d, e, f, g) \
3206 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3207 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3208 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3209 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3210 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3211 gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
3212 gcpro7.next = &gcpro6; gcpro7.var = &(g); gcpro7.nvars = 1; \
3213 gcprolist = &gcpro7; }
3215 #define UNGCPRO (gcprolist = gcpro1.next)
3217 #else /* !DEBUG_GCPRO */
3219 extern int gcpro_level
;
3222 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3223 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3224 gcpro1.level = gcpro_level++; \
3225 gcprolist = &gcpro1; }
3227 #define GCPRO2(a, b) \
3228 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3229 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3230 gcpro1.level = gcpro_level; \
3231 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3232 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3233 gcpro2.level = gcpro_level++; \
3234 gcprolist = &gcpro2; }
3236 #define GCPRO3(a, b, c) \
3237 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3238 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3239 gcpro1.level = gcpro_level; \
3240 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3241 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3242 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3243 gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
3244 gcpro3.level = gcpro_level++; \
3245 gcprolist = &gcpro3; }
3247 #define GCPRO4(a, b, c, d) \
3248 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3249 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3250 gcpro1.level = gcpro_level; \
3251 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3252 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3253 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3254 gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
3255 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3256 gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
3257 gcpro4.level = gcpro_level++; \
3258 gcprolist = &gcpro4; }
3260 #define GCPRO5(a, b, c, d, e) \
3261 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3262 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3263 gcpro1.level = gcpro_level; \
3264 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3265 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3266 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3267 gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
3268 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3269 gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
3270 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3271 gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
3272 gcpro5.level = gcpro_level++; \
3273 gcprolist = &gcpro5; }
3275 #define GCPRO6(a, b, c, d, e, f) \
3276 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3277 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3278 gcpro1.level = gcpro_level; \
3279 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3280 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3281 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3282 gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
3283 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3284 gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
3285 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3286 gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
3287 gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
3288 gcpro6.name = __FILE__; gcpro6.lineno = __LINE__; gcpro6.idx = 6; \
3289 gcpro6.level = gcpro_level++; \
3290 gcprolist = &gcpro6; }
3292 #define GCPRO7(a, b, c, d, e, f, g) \
3293 { gcpro1.next = gcprolist; gcpro1.var = &(a); gcpro1.nvars = 1; \
3294 gcpro1.name = __FILE__; gcpro1.lineno = __LINE__; gcpro1.idx = 1; \
3295 gcpro1.level = gcpro_level; \
3296 gcpro2.next = &gcpro1; gcpro2.var = &(b); gcpro2.nvars = 1; \
3297 gcpro2.name = __FILE__; gcpro2.lineno = __LINE__; gcpro2.idx = 2; \
3298 gcpro3.next = &gcpro2; gcpro3.var = &(c); gcpro3.nvars = 1; \
3299 gcpro3.name = __FILE__; gcpro3.lineno = __LINE__; gcpro3.idx = 3; \
3300 gcpro4.next = &gcpro3; gcpro4.var = &(d); gcpro4.nvars = 1; \
3301 gcpro4.name = __FILE__; gcpro4.lineno = __LINE__; gcpro4.idx = 4; \
3302 gcpro5.next = &gcpro4; gcpro5.var = &(e); gcpro5.nvars = 1; \
3303 gcpro5.name = __FILE__; gcpro5.lineno = __LINE__; gcpro5.idx = 5; \
3304 gcpro6.next = &gcpro5; gcpro6.var = &(f); gcpro6.nvars = 1; \
3305 gcpro6.name = __FILE__; gcpro6.lineno = __LINE__; gcpro6.idx = 6; \
3306 gcpro7.next = &gcpro6; gcpro7.var = &(g); gcpro7.nvars = 1; \
3307 gcpro7.name = __FILE__; gcpro7.lineno = __LINE__; gcpro7.idx = 7; \
3308 gcpro7.level = gcpro_level++; \
3309 gcprolist = &gcpro7; }
3312 (--gcpro_level != gcpro1.level \
3314 : (void) (gcprolist = gcpro1.next))
3316 #endif /* DEBUG_GCPRO */
3317 #endif /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */
3320 /* Evaluate expr, UNGCPRO, and then return the value of expr. */
3321 #define RETURN_UNGCPRO(expr) \
3324 Lisp_Object ret_ungc_val; \
3325 ret_ungc_val = (expr); \
3327 return ret_ungc_val; \
3331 /* Call staticpro (&var) to protect static variable `var'. */
3333 void staticpro (Lisp_Object
*);
3335 /* Forward declarations for prototypes. */
3339 /* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */
3342 vcopy (Lisp_Object v
, ptrdiff_t offset
, Lisp_Object
*args
, ptrdiff_t count
)
3344 eassert (0 <= offset
&& 0 <= count
&& offset
+ count
<= ASIZE (v
));
3345 memcpy (XVECTOR (v
)->contents
+ offset
, args
, count
* sizeof *args
);
3348 /* Functions to modify hash tables. */
3351 set_hash_key_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
3353 gc_aset (h
->key_and_value
, 2 * idx
, val
);
3357 set_hash_value_slot (struct Lisp_Hash_Table
*h
, ptrdiff_t idx
, Lisp_Object val
)
3359 gc_aset (h
->key_and_value
, 2 * idx
+ 1, val
);
3362 /* Use these functions to set Lisp_Object
3363 or pointer slots of struct Lisp_Symbol. */
3366 set_symbol_function (Lisp_Object sym
, Lisp_Object function
)
3368 XSYMBOL (sym
)->function
= function
;
3372 set_symbol_plist (Lisp_Object sym
, Lisp_Object plist
)
3374 XSYMBOL (sym
)->plist
= plist
;
3378 set_symbol_next (Lisp_Object sym
, struct Lisp_Symbol
*next
)
3380 XSYMBOL (sym
)->next
= next
;
3383 /* Buffer-local (also frame-local) variable access functions. */
3386 blv_found (struct Lisp_Buffer_Local_Value
*blv
)
3388 eassert (blv
->found
== !EQ (blv
->defcell
, blv
->valcell
));
3392 /* Set overlay's property list. */
3395 set_overlay_plist (Lisp_Object overlay
, Lisp_Object plist
)
3397 XOVERLAY (overlay
)->plist
= plist
;
3400 /* Get text properties of S. */
3403 string_intervals (Lisp_Object s
)
3405 return XSTRING (s
)->intervals
;
3408 /* Set text properties of S to I. */
3411 set_string_intervals (Lisp_Object s
, INTERVAL i
)
3413 XSTRING (s
)->intervals
= i
;
3416 /* Set a Lisp slot in TABLE to VAL. Most code should use this instead
3417 of setting slots directly. */
3420 set_char_table_defalt (Lisp_Object table
, Lisp_Object val
)
3422 XCHAR_TABLE (table
)->defalt
= val
;
3425 set_char_table_purpose (Lisp_Object table
, Lisp_Object val
)
3427 XCHAR_TABLE (table
)->purpose
= val
;
3430 /* Set different slots in (sub)character tables. */
3433 set_char_table_extras (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
3435 eassert (0 <= idx
&& idx
< CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table
)));
3436 XCHAR_TABLE (table
)->extras
[idx
] = val
;
3440 set_char_table_contents (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
3442 eassert (0 <= idx
&& idx
< (1 << CHARTAB_SIZE_BITS_0
));
3443 XCHAR_TABLE (table
)->contents
[idx
] = val
;
3447 set_sub_char_table_contents (Lisp_Object table
, ptrdiff_t idx
, Lisp_Object val
)
3449 XSUB_CHAR_TABLE (table
)->contents
[idx
] = val
;
3452 /* Defined in data.c. */
3453 extern Lisp_Object
indirect_function (Lisp_Object
);
3454 extern Lisp_Object
find_symbol_value (Lisp_Object
);
3455 enum Arith_Comparison
{
3460 ARITH_LESS_OR_EQUAL
,
3463 extern Lisp_Object
arithcompare (Lisp_Object num1
, Lisp_Object num2
,
3464 enum Arith_Comparison comparison
);
3466 /* Convert the integer I to an Emacs representation, either the integer
3467 itself, or a cons of two or three integers, or if all else fails a float.
3468 I should not have side effects. */
3469 #define INTEGER_TO_CONS(i) \
3470 (! FIXNUM_OVERFLOW_P (i) \
3472 : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \
3473 || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \
3474 && FIXNUM_OVERFLOW_P ((i) >> 16)) \
3475 ? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \
3476 : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \
3477 || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \
3478 && FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \
3479 ? Fcons (make_number ((i) >> 16 >> 24), \
3480 Fcons (make_number ((i) >> 16 & 0xffffff), \
3481 make_number ((i) & 0xffff))) \
3484 /* Convert the Emacs representation CONS back to an integer of type
3485 TYPE, storing the result the variable VAR. Signal an error if CONS
3486 is not a valid representation or is out of range for TYPE. */
3487 #define CONS_TO_INTEGER(cons, type, var) \
3488 (TYPE_SIGNED (type) \
3489 ? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \
3490 : ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type))))
3491 extern intmax_t cons_to_signed (Lisp_Object
, intmax_t, intmax_t);
3492 extern uintmax_t cons_to_unsigned (Lisp_Object
, uintmax_t);
3494 extern struct Lisp_Symbol
*indirect_variable (struct Lisp_Symbol
*);
3495 extern _Noreturn
void args_out_of_range (Lisp_Object
, Lisp_Object
);
3496 extern _Noreturn
void args_out_of_range_3 (Lisp_Object
, Lisp_Object
,
3498 extern Lisp_Object
do_symval_forwarding (union Lisp_Fwd
*);
3499 extern void set_internal (Lisp_Object
, Lisp_Object
, Lisp_Object
, bool);
3500 extern void syms_of_data (void);
3501 extern void swap_in_global_binding (struct Lisp_Symbol
*);
3503 /* Defined in cmds.c */
3504 extern void syms_of_cmds (void);
3505 extern void keys_of_cmds (void);
3507 /* Defined in coding.c. */
3508 extern Lisp_Object
detect_coding_system (const unsigned char *, ptrdiff_t,
3509 ptrdiff_t, bool, bool, Lisp_Object
);
3510 extern void init_coding (void);
3511 extern void init_coding_once (void);
3512 extern void syms_of_coding (void);
3514 /* Defined in character.c. */
3515 extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t);
3516 extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t);
3517 extern void syms_of_character (void);
3519 /* Defined in charset.c. */
3520 extern void init_charset (void);
3521 extern void init_charset_once (void);
3522 extern void syms_of_charset (void);
3523 /* Structure forward declarations. */
3526 /* Defined in syntax.c. */
3527 extern void init_syntax_once (void);
3528 extern void syms_of_syntax (void);
3530 /* Defined in fns.c. */
3531 enum { NEXT_ALMOST_PRIME_LIMIT
= 11 };
3532 extern EMACS_INT
next_almost_prime (EMACS_INT
) ATTRIBUTE_CONST
;
3533 extern Lisp_Object
larger_vector (Lisp_Object
, ptrdiff_t, ptrdiff_t);
3534 extern void sweep_weak_hash_tables (void);
3535 EMACS_UINT
hash_string (char const *, ptrdiff_t);
3536 EMACS_UINT
sxhash (Lisp_Object
, int);
3537 Lisp_Object
make_hash_table (struct hash_table_test
, Lisp_Object
, Lisp_Object
,
3538 Lisp_Object
, Lisp_Object
);
3539 ptrdiff_t hash_lookup (struct Lisp_Hash_Table
*, Lisp_Object
, EMACS_UINT
*);
3540 ptrdiff_t hash_put (struct Lisp_Hash_Table
*, Lisp_Object
, Lisp_Object
,
3542 extern struct hash_table_test hashtest_eql
, hashtest_equal
;
3543 extern void validate_subarray (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3544 ptrdiff_t, ptrdiff_t *, ptrdiff_t *);
3545 extern Lisp_Object
substring_both (Lisp_Object
, ptrdiff_t, ptrdiff_t,
3546 ptrdiff_t, ptrdiff_t);
3547 extern Lisp_Object
merge (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3548 extern Lisp_Object
do_yes_or_no_p (Lisp_Object
);
3549 extern Lisp_Object
concat2 (Lisp_Object
, Lisp_Object
);
3550 extern Lisp_Object
concat3 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3551 extern Lisp_Object
nconc2 (Lisp_Object
, Lisp_Object
);
3552 extern Lisp_Object
assq_no_quit (Lisp_Object
, Lisp_Object
);
3553 extern Lisp_Object
assoc_no_quit (Lisp_Object
, Lisp_Object
);
3554 extern void clear_string_char_byte_cache (void);
3555 extern ptrdiff_t string_char_to_byte (Lisp_Object
, ptrdiff_t);
3556 extern ptrdiff_t string_byte_to_char (Lisp_Object
, ptrdiff_t);
3557 extern Lisp_Object
string_to_multibyte (Lisp_Object
);
3558 extern Lisp_Object
string_make_unibyte (Lisp_Object
);
3559 extern void syms_of_fns (void);
3561 /* Defined in floatfns.c. */
3562 extern void syms_of_floatfns (void);
3563 extern Lisp_Object
fmod_float (Lisp_Object x
, Lisp_Object y
);
3565 /* Defined in fringe.c. */
3566 extern void syms_of_fringe (void);
3567 extern void init_fringe (void);
3568 #ifdef HAVE_WINDOW_SYSTEM
3569 extern void mark_fringe_data (void);
3570 extern void init_fringe_once (void);
3571 #endif /* HAVE_WINDOW_SYSTEM */
3573 /* Defined in image.c. */
3574 extern int x_bitmap_mask (struct frame
*, ptrdiff_t);
3575 extern void reset_image_types (void);
3576 extern void syms_of_image (void);
3578 /* Defined in insdel.c. */
3579 extern void move_gap_both (ptrdiff_t, ptrdiff_t);
3580 extern _Noreturn
void buffer_overflow (void);
3581 extern void make_gap (ptrdiff_t);
3582 extern void make_gap_1 (struct buffer
*, ptrdiff_t);
3583 extern ptrdiff_t copy_text (const unsigned char *, unsigned char *,
3584 ptrdiff_t, bool, bool);
3585 extern int count_combining_before (const unsigned char *,
3586 ptrdiff_t, ptrdiff_t, ptrdiff_t);
3587 extern int count_combining_after (const unsigned char *,
3588 ptrdiff_t, ptrdiff_t, ptrdiff_t);
3589 extern void insert (const char *, ptrdiff_t);
3590 extern void insert_and_inherit (const char *, ptrdiff_t);
3591 extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t,
3593 extern void insert_from_gap (ptrdiff_t, ptrdiff_t, bool text_at_gap_tail
);
3594 extern void insert_from_string (Lisp_Object
, ptrdiff_t, ptrdiff_t,
3595 ptrdiff_t, ptrdiff_t, bool);
3596 extern void insert_from_buffer (struct buffer
*, ptrdiff_t, ptrdiff_t, bool);
3597 extern void insert_char (int);
3598 extern void insert_string (const char *);
3599 extern void insert_before_markers (const char *, ptrdiff_t);
3600 extern void insert_before_markers_and_inherit (const char *, ptrdiff_t);
3601 extern void insert_from_string_before_markers (Lisp_Object
, ptrdiff_t,
3602 ptrdiff_t, ptrdiff_t,
3604 extern void del_range (ptrdiff_t, ptrdiff_t);
3605 extern Lisp_Object
del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool);
3606 extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool);
3607 extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool);
3608 extern Lisp_Object
del_range_2 (ptrdiff_t, ptrdiff_t,
3609 ptrdiff_t, ptrdiff_t, bool);
3610 extern void modify_text (ptrdiff_t, ptrdiff_t);
3611 extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
3612 extern void prepare_to_modify_buffer_1 (ptrdiff_t, ptrdiff_t, ptrdiff_t *);
3613 extern void invalidate_buffer_caches (struct buffer
*, ptrdiff_t, ptrdiff_t);
3614 extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t);
3615 extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t,
3616 ptrdiff_t, ptrdiff_t);
3617 extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t,
3618 ptrdiff_t, ptrdiff_t);
3619 extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object
, bool, bool, bool);
3620 extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
3621 const char *, ptrdiff_t, ptrdiff_t, bool);
3622 extern void syms_of_insdel (void);
3624 /* Defined in dispnew.c. */
3625 #if (defined PROFILING \
3626 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
3627 _Noreturn
void __executable_start (void);
3629 extern Lisp_Object Vwindow_system
;
3630 extern Lisp_Object
sit_for (Lisp_Object
, bool, int);
3632 /* Defined in xdisp.c. */
3633 extern bool noninteractive_need_newline
;
3634 extern Lisp_Object echo_area_buffer
[2];
3635 extern void add_to_log (const char *, Lisp_Object
, Lisp_Object
);
3636 extern void check_message_stack (void);
3637 extern void setup_echo_area_for_printing (int);
3638 extern bool push_message (void);
3639 extern void pop_message_unwind (void);
3640 extern Lisp_Object
restore_message_unwind (Lisp_Object
);
3641 extern void restore_message (void);
3642 extern Lisp_Object
current_message (void);
3643 extern void clear_message (bool, bool);
3644 extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
3645 extern void message1 (const char *);
3646 extern void message1_nolog (const char *);
3647 extern void message3 (Lisp_Object
);
3648 extern void message3_nolog (Lisp_Object
);
3649 extern void message_dolog (const char *, ptrdiff_t, bool, bool);
3650 extern void message_with_string (const char *, Lisp_Object
, int);
3651 extern void message_log_maybe_newline (void);
3652 extern void update_echo_area (void);
3653 extern void truncate_echo_area (ptrdiff_t);
3654 extern void redisplay (void);
3656 void set_frame_cursor_types (struct frame
*, Lisp_Object
);
3657 extern void syms_of_xdisp (void);
3658 extern void init_xdisp (void);
3659 extern Lisp_Object
safe_eval (Lisp_Object
);
3660 extern int pos_visible_p (struct window
*, ptrdiff_t, int *,
3661 int *, int *, int *, int *, int *);
3663 /* Defined in xsettings.c. */
3664 extern void syms_of_xsettings (void);
3666 /* Defined in vm-limit.c. */
3667 extern void memory_warnings (void *, void (*warnfun
) (const char *));
3669 /* Defined in character.c. */
3670 extern void parse_str_as_multibyte (const unsigned char *, ptrdiff_t,
3671 ptrdiff_t *, ptrdiff_t *);
3673 /* Defined in alloc.c. */
3674 extern void check_pure_size (void);
3675 extern void free_misc (Lisp_Object
);
3676 extern void allocate_string_data (struct Lisp_String
*, EMACS_INT
, EMACS_INT
);
3677 extern void malloc_warning (const char *);
3678 extern _Noreturn
void memory_full (size_t);
3679 extern _Noreturn
void buffer_memory_full (ptrdiff_t);
3680 extern bool survives_gc_p (Lisp_Object
);
3681 extern void mark_object (Lisp_Object
);
3682 #if defined REL_ALLOC && !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
3683 extern void refill_memory_reserve (void);
3685 extern const char *pending_malloc_warning
;
3686 extern Lisp_Object zero_vector
;
3687 extern Lisp_Object
*stack_base
;
3688 extern EMACS_INT consing_since_gc
;
3689 extern EMACS_INT gc_relative_threshold
;
3690 extern EMACS_INT memory_full_cons_threshold
;
3691 extern Lisp_Object
list1 (Lisp_Object
);
3692 extern Lisp_Object
list2 (Lisp_Object
, Lisp_Object
);
3693 extern Lisp_Object
list3 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3694 extern Lisp_Object
list4 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3695 extern Lisp_Object
list5 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
,
3697 enum constype
{CONSTYPE_HEAP
, CONSTYPE_PURE
};
3698 extern Lisp_Object
listn (enum constype
, ptrdiff_t, Lisp_Object
, ...);
3700 /* Build a frequently used 2/3/4-integer lists. */
3703 list2i (EMACS_INT x
, EMACS_INT y
)
3705 return list2 (make_number (x
), make_number (y
));
3709 list3i (EMACS_INT x
, EMACS_INT y
, EMACS_INT w
)
3711 return list3 (make_number (x
), make_number (y
), make_number (w
));
3715 list4i (EMACS_INT x
, EMACS_INT y
, EMACS_INT w
, EMACS_INT h
)
3717 return list4 (make_number (x
), make_number (y
),
3718 make_number (w
), make_number (h
));
3721 extern Lisp_Object
make_uninit_bool_vector (EMACS_INT
);
3722 extern Lisp_Object
bool_vector_fill (Lisp_Object
, Lisp_Object
);
3723 extern _Noreturn
void string_overflow (void);
3724 extern Lisp_Object
make_string (const char *, ptrdiff_t);
3725 extern Lisp_Object
make_formatted_string (char *, const char *, ...)
3726 ATTRIBUTE_FORMAT_PRINTF (2, 3);
3727 extern Lisp_Object
make_unibyte_string (const char *, ptrdiff_t);
3729 /* Make unibyte string from C string when the length isn't known. */
3732 build_unibyte_string (const char *str
)
3734 return make_unibyte_string (str
, strlen (str
));
3737 extern Lisp_Object
make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t);
3738 extern Lisp_Object
make_event_array (ptrdiff_t, Lisp_Object
*);
3739 extern Lisp_Object
make_uninit_string (EMACS_INT
);
3740 extern Lisp_Object
make_uninit_multibyte_string (EMACS_INT
, EMACS_INT
);
3741 extern Lisp_Object
make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t);
3742 extern Lisp_Object
make_specified_string (const char *,
3743 ptrdiff_t, ptrdiff_t, bool);
3744 extern Lisp_Object
make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool);
3745 extern Lisp_Object
make_pure_c_string (const char *, ptrdiff_t);
3747 /* Make a string allocated in pure space, use STR as string data. */
3750 build_pure_c_string (const char *str
)
3752 return make_pure_c_string (str
, strlen (str
));
3755 /* Make a string from the data at STR, treating it as multibyte if the
3759 build_string (const char *str
)
3761 return make_string (str
, strlen (str
));
3764 extern Lisp_Object
pure_cons (Lisp_Object
, Lisp_Object
);
3765 extern void make_byte_code (struct Lisp_Vector
*);
3766 extern struct Lisp_Vector
*allocate_vector (EMACS_INT
);
3768 /* Make an uninitialized vector for SIZE objects. NOTE: you must
3769 be sure that GC cannot happen until the vector is completely
3770 initialized. E.g. the following code is likely to crash:
3772 v = make_uninit_vector (3);
3774 ASET (v, 1, Ffunction_can_gc ());
3775 ASET (v, 2, obj1); */
3778 make_uninit_vector (ptrdiff_t size
)
3781 struct Lisp_Vector
*p
;
3783 p
= allocate_vector (size
);
3788 /* Like above, but special for sub char-tables. */
3791 make_uninit_sub_char_table (int depth
, int min_char
)
3793 int slots
= SUB_CHAR_TABLE_OFFSET
+ chartab_size
[depth
];
3794 Lisp_Object v
= make_uninit_vector (slots
);
3796 XSETPVECTYPE (XVECTOR (v
), PVEC_SUB_CHAR_TABLE
);
3797 XSUB_CHAR_TABLE (v
)->depth
= depth
;
3798 XSUB_CHAR_TABLE (v
)->min_char
= min_char
;
3802 extern struct Lisp_Vector
*allocate_pseudovector (int, int, int,
3805 /* Allocate partially initialized pseudovector where all Lisp_Object
3806 slots are set to Qnil but the rest (if any) is left uninitialized. */
3808 #define ALLOCATE_PSEUDOVECTOR(type, field, tag) \
3809 ((type *) allocate_pseudovector (VECSIZE (type), \
3810 PSEUDOVECSIZE (type, field), \
3811 PSEUDOVECSIZE (type, field), tag))
3813 /* Allocate fully initialized pseudovector where all Lisp_Object
3814 slots are set to Qnil and the rest (if any) is zeroed. */
3816 #define ALLOCATE_ZEROED_PSEUDOVECTOR(type, field, tag) \
3817 ((type *) allocate_pseudovector (VECSIZE (type), \
3818 PSEUDOVECSIZE (type, field), \
3819 VECSIZE (type), tag))
3821 extern bool gc_in_progress
;
3822 extern bool abort_on_gc
;
3823 extern Lisp_Object
make_float (double);
3824 extern void display_malloc_warning (void);
3825 extern ptrdiff_t inhibit_garbage_collection (void);
3826 extern Lisp_Object
make_save_int_int_int (ptrdiff_t, ptrdiff_t, ptrdiff_t);
3827 extern Lisp_Object
make_save_obj_obj_obj_obj (Lisp_Object
, Lisp_Object
,
3828 Lisp_Object
, Lisp_Object
);
3829 extern Lisp_Object
make_save_ptr (void *);
3830 extern Lisp_Object
make_save_ptr_int (void *, ptrdiff_t);
3831 extern Lisp_Object
make_save_ptr_ptr (void *, void *);
3832 extern Lisp_Object
make_save_funcptr_ptr_obj (void (*) (void), void *,
3834 extern Lisp_Object
make_save_memory (Lisp_Object
*, ptrdiff_t);
3835 extern void free_save_value (Lisp_Object
);
3836 extern Lisp_Object
build_overlay (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3837 extern void free_marker (Lisp_Object
);
3838 extern void free_cons (struct Lisp_Cons
*);
3839 extern void init_alloc_once (void);
3840 extern void init_alloc (void);
3841 extern void syms_of_alloc (void);
3842 extern struct buffer
* allocate_buffer (void);
3843 extern int valid_lisp_object_p (Lisp_Object
);
3844 extern int relocatable_string_data_p (const char *);
3845 #ifdef GC_CHECK_CONS_LIST
3846 extern void check_cons_list (void);
3848 INLINE
void (check_cons_list
) (void) { lisp_h_check_cons_list (); }
3852 /* Defined in ralloc.c. */
3853 extern void *r_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
3854 extern void r_alloc_free (void **);
3855 extern void *r_re_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
3856 extern void r_alloc_reset_variable (void **, void **);
3857 extern void r_alloc_inhibit_buffer_relocation (int);
3860 /* Defined in chartab.c. */
3861 extern Lisp_Object
copy_char_table (Lisp_Object
);
3862 extern Lisp_Object
char_table_ref_and_range (Lisp_Object
, int,
3864 extern void char_table_set_range (Lisp_Object
, int, int, Lisp_Object
);
3865 extern void map_char_table (void (*) (Lisp_Object
, Lisp_Object
,
3867 Lisp_Object
, Lisp_Object
, Lisp_Object
);
3868 extern void map_char_table_for_charset (void (*c_function
) (Lisp_Object
, Lisp_Object
),
3869 Lisp_Object
, Lisp_Object
,
3870 Lisp_Object
, struct charset
*,
3871 unsigned, unsigned);
3872 extern Lisp_Object
uniprop_table (Lisp_Object
);
3873 extern void syms_of_chartab (void);
3875 /* Defined in print.c. */
3876 extern Lisp_Object Vprin1_to_string_buffer
;
3877 extern void debug_print (Lisp_Object
) EXTERNALLY_VISIBLE
;
3878 extern void temp_output_buffer_setup (const char *);
3879 extern int print_level
;
3880 extern void write_string (const char *, int);
3881 extern void print_error_message (Lisp_Object
, Lisp_Object
, const char *,
3883 extern Lisp_Object internal_with_output_to_temp_buffer
3884 (const char *, Lisp_Object (*) (Lisp_Object
), Lisp_Object
);
3885 #define FLOAT_TO_STRING_BUFSIZE 350
3886 extern int float_to_string (char *, double);
3887 extern void init_print_once (void);
3888 extern void syms_of_print (void);
3890 /* Defined in doprnt.c. */
3891 extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *,
3893 extern ptrdiff_t esprintf (char *, char const *, ...)
3894 ATTRIBUTE_FORMAT_PRINTF (2, 3);
3895 extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
3897 ATTRIBUTE_FORMAT_PRINTF (5, 6);
3898 extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
3899 char const *, va_list)
3900 ATTRIBUTE_FORMAT_PRINTF (5, 0);
3902 /* Defined in lread.c. */
3903 extern Lisp_Object
check_obarray (Lisp_Object
);
3904 extern Lisp_Object
intern_1 (const char *, ptrdiff_t);
3905 extern Lisp_Object
intern_c_string_1 (const char *, ptrdiff_t);
3906 extern Lisp_Object
intern_driver (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3907 extern void init_symbol (Lisp_Object
, Lisp_Object
);
3908 extern Lisp_Object
oblookup (Lisp_Object
, const char *, ptrdiff_t, ptrdiff_t);
3910 LOADHIST_ATTACH (Lisp_Object x
)
3913 Vcurrent_load_list
= Fcons (x
, Vcurrent_load_list
);
3915 extern int openp (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3916 Lisp_Object
*, Lisp_Object
, bool);
3917 extern Lisp_Object
string_to_number (char const *, int, bool);
3918 extern void map_obarray (Lisp_Object
, void (*) (Lisp_Object
, Lisp_Object
),
3920 extern void dir_warning (const char *, Lisp_Object
);
3921 extern void init_obarray (void);
3922 extern void init_lread (void);
3923 extern void syms_of_lread (void);
3926 intern (const char *str
)
3928 return intern_1 (str
, strlen (str
));
3932 intern_c_string (const char *str
)
3934 return intern_c_string_1 (str
, strlen (str
));
3937 /* Defined in eval.c. */
3938 extern EMACS_INT lisp_eval_depth
;
3939 extern Lisp_Object Vautoload_queue
;
3940 extern Lisp_Object Vrun_hooks
;
3941 extern Lisp_Object Vsignaling_function
;
3942 extern Lisp_Object inhibit_lisp_code
;
3943 extern struct handler
*handlerlist
;
3945 /* To run a normal hook, use the appropriate function from the list below.
3946 The calling convention:
3948 if (!NILP (Vrun_hooks))
3949 call1 (Vrun_hooks, Qmy_funny_hook);
3951 should no longer be used. */
3952 extern void run_hook (Lisp_Object
);
3953 extern void run_hook_with_args_2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3954 extern Lisp_Object
run_hook_with_args (ptrdiff_t nargs
, Lisp_Object
*args
,
3955 Lisp_Object (*funcall
)
3956 (ptrdiff_t nargs
, Lisp_Object
*args
));
3957 extern _Noreturn
void xsignal (Lisp_Object
, Lisp_Object
);
3958 extern _Noreturn
void xsignal0 (Lisp_Object
);
3959 extern _Noreturn
void xsignal1 (Lisp_Object
, Lisp_Object
);
3960 extern _Noreturn
void xsignal2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3961 extern _Noreturn
void xsignal3 (Lisp_Object
, Lisp_Object
, Lisp_Object
,
3963 extern _Noreturn
void signal_error (const char *, Lisp_Object
);
3964 extern Lisp_Object
eval_sub (Lisp_Object form
);
3965 extern Lisp_Object
apply1 (Lisp_Object
, Lisp_Object
);
3966 extern Lisp_Object
call0 (Lisp_Object
);
3967 extern Lisp_Object
call1 (Lisp_Object
, Lisp_Object
);
3968 extern Lisp_Object
call2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3969 extern Lisp_Object
call3 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3970 extern Lisp_Object
call4 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3971 extern Lisp_Object
call5 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3972 extern Lisp_Object
call6 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3973 extern Lisp_Object
call7 (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
3974 extern Lisp_Object
internal_catch (Lisp_Object
, Lisp_Object (*) (Lisp_Object
), Lisp_Object
);
3975 extern Lisp_Object
internal_lisp_condition_case (Lisp_Object
, Lisp_Object
, Lisp_Object
);
3976 extern Lisp_Object
internal_condition_case (Lisp_Object (*) (void), Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3977 extern Lisp_Object
internal_condition_case_1 (Lisp_Object (*) (Lisp_Object
), Lisp_Object
, Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3978 extern Lisp_Object
internal_condition_case_2 (Lisp_Object (*) (Lisp_Object
, Lisp_Object
), Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object (*) (Lisp_Object
));
3979 extern Lisp_Object internal_condition_case_n
3980 (Lisp_Object (*) (ptrdiff_t, Lisp_Object
*), ptrdiff_t, Lisp_Object
*,
3981 Lisp_Object
, Lisp_Object (*) (Lisp_Object
, ptrdiff_t, Lisp_Object
*));
3982 extern void specbind (Lisp_Object
, Lisp_Object
);
3983 extern void record_unwind_protect (void (*) (Lisp_Object
), Lisp_Object
);
3984 extern void record_unwind_protect_ptr (void (*) (void *), void *);
3985 extern void record_unwind_protect_int (void (*) (int), int);
3986 extern void record_unwind_protect_void (void (*) (void));
3987 extern void record_unwind_protect_nothing (void);
3988 extern void clear_unwind_protect (ptrdiff_t);
3989 extern void set_unwind_protect (ptrdiff_t, void (*) (Lisp_Object
), Lisp_Object
);
3990 extern void set_unwind_protect_ptr (ptrdiff_t, void (*) (void *), void *);
3991 extern Lisp_Object
unbind_to (ptrdiff_t, Lisp_Object
);
3992 extern _Noreturn
void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2);
3993 extern _Noreturn
void verror (const char *, va_list)
3994 ATTRIBUTE_FORMAT_PRINTF (1, 0);
3995 extern void un_autoload (Lisp_Object
);
3996 extern Lisp_Object
call_debugger (Lisp_Object arg
);
3997 extern void init_eval_once (void);
3998 extern Lisp_Object
safe_call (ptrdiff_t, Lisp_Object
, ...);
3999 extern Lisp_Object
safe_call1 (Lisp_Object
, Lisp_Object
);
4000 extern Lisp_Object
safe_call2 (Lisp_Object
, Lisp_Object
, Lisp_Object
);
4001 extern void init_eval (void);
4002 extern void syms_of_eval (void);
4003 extern void unwind_body (Lisp_Object
);
4004 extern ptrdiff_t record_in_backtrace (Lisp_Object
, Lisp_Object
*, ptrdiff_t);
4005 extern void mark_specpdl (void);
4006 extern void get_backtrace (Lisp_Object array
);
4007 Lisp_Object
backtrace_top_function (void);
4008 extern bool let_shadows_buffer_binding_p (struct Lisp_Symbol
*symbol
);
4009 extern bool let_shadows_global_binding_p (Lisp_Object symbol
);
4012 /* Defined in editfns.c. */
4013 extern void insert1 (Lisp_Object
);
4014 extern Lisp_Object
format2 (const char *, Lisp_Object
, Lisp_Object
);
4015 extern Lisp_Object
save_excursion_save (void);
4016 extern Lisp_Object
save_restriction_save (void);
4017 extern void save_excursion_restore (Lisp_Object
);
4018 extern void save_restriction_restore (Lisp_Object
);
4019 extern _Noreturn
void time_overflow (void);
4020 extern Lisp_Object
make_buffer_string (ptrdiff_t, ptrdiff_t, bool);
4021 extern Lisp_Object
make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t,
4023 extern void init_editfns (void);
4024 extern void syms_of_editfns (void);
4026 /* Defined in buffer.c. */
4027 extern bool mouse_face_overlay_overlaps (Lisp_Object
);
4028 extern _Noreturn
void nsberror (Lisp_Object
);
4029 extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t);
4030 extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t);
4031 extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t);
4032 extern void report_overlay_modification (Lisp_Object
, Lisp_Object
, bool,
4033 Lisp_Object
, Lisp_Object
, Lisp_Object
);
4034 extern bool overlay_touches_p (ptrdiff_t);
4035 extern Lisp_Object
other_buffer_safely (Lisp_Object
);
4036 extern Lisp_Object
get_truename_buffer (Lisp_Object
);
4037 extern void init_buffer_once (void);
4038 extern void init_buffer (int);
4039 extern void syms_of_buffer (void);
4040 extern void keys_of_buffer (void);
4042 /* Defined in marker.c. */
4044 extern ptrdiff_t marker_position (Lisp_Object
);
4045 extern ptrdiff_t marker_byte_position (Lisp_Object
);
4046 extern void clear_charpos_cache (struct buffer
*);
4047 extern ptrdiff_t buf_charpos_to_bytepos (struct buffer
*, ptrdiff_t);
4048 extern ptrdiff_t buf_bytepos_to_charpos (struct buffer
*, ptrdiff_t);
4049 extern void unchain_marker (struct Lisp_Marker
*marker
);
4050 extern Lisp_Object
set_marker_restricted (Lisp_Object
, Lisp_Object
, Lisp_Object
);
4051 extern Lisp_Object
set_marker_both (Lisp_Object
, Lisp_Object
, ptrdiff_t, ptrdiff_t);
4052 extern Lisp_Object
set_marker_restricted_both (Lisp_Object
, Lisp_Object
,
4053 ptrdiff_t, ptrdiff_t);
4054 extern Lisp_Object
build_marker (struct buffer
*, ptrdiff_t, ptrdiff_t);
4055 extern void syms_of_marker (void);
4057 /* Defined in fileio.c. */
4059 extern Lisp_Object
expand_and_dir_to_file (Lisp_Object
, Lisp_Object
);
4060 extern Lisp_Object
write_region (Lisp_Object
, Lisp_Object
, Lisp_Object
,
4061 Lisp_Object
, Lisp_Object
, Lisp_Object
,
4063 extern void close_file_unwind (int);
4064 extern void fclose_unwind (void *);
4065 extern void restore_point_unwind (Lisp_Object
);
4066 extern _Noreturn
void report_file_errno (const char *, Lisp_Object
, int);
4067 extern _Noreturn
void report_file_error (const char *, Lisp_Object
);
4068 extern bool internal_delete_file (Lisp_Object
);
4069 extern Lisp_Object
emacs_readlinkat (int, const char *);
4070 extern bool file_directory_p (const char *);
4071 extern bool file_accessible_directory_p (Lisp_Object
);
4072 extern void init_fileio (void);
4073 extern void syms_of_fileio (void);
4074 extern Lisp_Object
make_temp_name (Lisp_Object
, bool);
4076 /* Defined in search.c. */
4077 extern void shrink_regexp_cache (void);
4078 extern void restore_search_regs (void);
4079 extern void record_unwind_save_match_data (void);
4080 struct re_registers
;
4081 extern struct re_pattern_buffer
*compile_pattern (Lisp_Object
,
4082 struct re_registers
*,
4083 Lisp_Object
, bool, bool);
4084 extern ptrdiff_t fast_string_match_internal (Lisp_Object
, Lisp_Object
,
4088 fast_string_match (Lisp_Object regexp
, Lisp_Object string
)
4090 return fast_string_match_internal (regexp
, string
, Qnil
);
4094 fast_string_match_ignore_case (Lisp_Object regexp
, Lisp_Object string
)
4096 return fast_string_match_internal (regexp
, string
, Vascii_canon_table
);
4099 extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object
, const char *,
4101 extern ptrdiff_t fast_looking_at (Lisp_Object
, ptrdiff_t, ptrdiff_t,
4102 ptrdiff_t, ptrdiff_t, Lisp_Object
);
4103 extern ptrdiff_t find_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
4104 ptrdiff_t, ptrdiff_t *, ptrdiff_t *, bool);
4105 extern ptrdiff_t scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t,
4107 extern ptrdiff_t scan_newline_from_point (ptrdiff_t, ptrdiff_t *, ptrdiff_t *);
4108 extern ptrdiff_t find_newline_no_quit (ptrdiff_t, ptrdiff_t,
4109 ptrdiff_t, ptrdiff_t *);
4110 extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t,
4111 ptrdiff_t, ptrdiff_t *);
4112 extern void syms_of_search (void);
4113 extern void clear_regexp_cache (void);
4115 /* Defined in minibuf.c. */
4117 extern Lisp_Object Vminibuffer_list
;
4118 extern Lisp_Object last_minibuf_string
;
4119 extern Lisp_Object
get_minibuffer (EMACS_INT
);
4120 extern void init_minibuf_once (void);
4121 extern void syms_of_minibuf (void);
4123 /* Defined in callint.c. */
4125 extern void syms_of_callint (void);
4127 /* Defined in casefiddle.c. */
4129 extern void syms_of_casefiddle (void);
4130 extern void keys_of_casefiddle (void);
4132 /* Defined in casetab.c. */
4134 extern void init_casetab_once (void);
4135 extern void syms_of_casetab (void);
4137 /* Defined in keyboard.c. */
4139 extern Lisp_Object echo_message_buffer
;
4140 extern struct kboard
*echo_kboard
;
4141 extern void cancel_echoing (void);
4142 extern Lisp_Object last_undo_boundary
;
4143 extern bool input_pending
;
4144 #ifdef HAVE_STACK_OVERFLOW_HANDLING
4145 extern sigjmp_buf return_to_command_loop
;
4147 extern Lisp_Object
menu_bar_items (Lisp_Object
);
4148 extern Lisp_Object
tool_bar_items (Lisp_Object
, int *);
4149 extern void discard_mouse_events (void);
4151 void handle_input_available_signal (int);
4153 extern Lisp_Object pending_funcalls
;
4154 extern bool detect_input_pending (void);
4155 extern bool detect_input_pending_ignore_squeezables (void);
4156 extern bool detect_input_pending_run_timers (bool);
4157 extern void safe_run_hooks (Lisp_Object
);
4158 extern void cmd_error_internal (Lisp_Object
, const char *);
4159 extern Lisp_Object
command_loop_1 (void);
4160 extern Lisp_Object
read_menu_command (void);
4161 extern Lisp_Object
recursive_edit_1 (void);
4162 extern void record_auto_save (void);
4163 extern void force_auto_save_soon (void);
4164 extern void init_keyboard (void);
4165 extern void syms_of_keyboard (void);
4166 extern void keys_of_keyboard (void);
4168 /* Defined in indent.c. */
4169 extern ptrdiff_t current_column (void);
4170 extern void invalidate_current_column (void);
4171 extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT
);
4172 extern void syms_of_indent (void);
4174 /* Defined in frame.c. */
4175 extern void store_frame_param (struct frame
*, Lisp_Object
, Lisp_Object
);
4176 extern void store_in_alist (Lisp_Object
*, Lisp_Object
, Lisp_Object
);
4177 extern Lisp_Object
do_switch_frame (Lisp_Object
, int, int, Lisp_Object
);
4178 extern Lisp_Object
get_frame_param (struct frame
*, Lisp_Object
);
4179 extern void frames_discard_buffer (Lisp_Object
);
4180 extern void syms_of_frame (void);
4182 /* Defined in emacs.c. */
4183 extern char **initial_argv
;
4184 extern int initial_argc
;
4185 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
4186 extern bool display_arg
;
4188 extern Lisp_Object
decode_env_path (const char *, const char *, bool);
4189 extern Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
4190 extern _Noreturn
void terminate_due_to_signal (int, int);
4192 extern Lisp_Object Vlibrary_cache
;
4195 void fixup_locale (void);
4196 void synchronize_system_messages_locale (void);
4197 void synchronize_system_time_locale (void);
4199 INLINE
void fixup_locale (void) {}
4200 INLINE
void synchronize_system_messages_locale (void) {}
4201 INLINE
void synchronize_system_time_locale (void) {}
4203 extern void shut_down_emacs (int, Lisp_Object
);
4205 /* True means don't do interactive redisplay and don't change tty modes. */
4206 extern bool noninteractive
;
4208 /* True means remove site-lisp directories from load-path. */
4209 extern bool no_site_lisp
;
4211 /* Pipe used to send exit notification to the daemon parent at
4213 extern int daemon_pipe
[2];
4214 #define IS_DAEMON (daemon_pipe[1] != 0)
4216 /* True if handling a fatal error already. */
4217 extern bool fatal_error_in_progress
;
4219 /* True means don't do use window-system-specific display code. */
4220 extern bool inhibit_window_system
;
4221 /* True means that a filter or a sentinel is running. */
4222 extern bool running_asynch_code
;
4224 /* Defined in process.c. */
4225 extern void kill_buffer_processes (Lisp_Object
);
4226 extern int wait_reading_process_output (intmax_t, int, int, bool, Lisp_Object
,
4227 struct Lisp_Process
*, int);
4228 /* Max value for the first argument of wait_reading_process_output. */
4229 #if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5)
4230 /* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3.
4231 The bug merely causes a bogus warning, but the warning is annoying. */
4232 # define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX)
4234 # define WAIT_READING_MAX INTMAX_MAX
4237 extern void add_timer_wait_descriptor (int);
4239 extern void add_keyboard_wait_descriptor (int);
4240 extern void delete_keyboard_wait_descriptor (int);
4242 extern void add_gpm_wait_descriptor (int);
4243 extern void delete_gpm_wait_descriptor (int);
4245 extern void init_process_emacs (void);
4246 extern void syms_of_process (void);
4247 extern void setup_process_coding_systems (Lisp_Object
);
4249 /* Defined in callproc.c. */
4253 extern int child_setup (int, int, int, char **, bool, Lisp_Object
);
4254 extern void init_callproc_1 (void);
4255 extern void init_callproc (void);
4256 extern void set_initial_environment (void);
4257 extern void syms_of_callproc (void);
4259 /* Defined in doc.c. */
4260 extern Lisp_Object
read_doc_string (Lisp_Object
);
4261 extern Lisp_Object
get_doc_string (Lisp_Object
, bool, bool);
4262 extern void syms_of_doc (void);
4263 extern int read_bytecode_char (bool);
4265 /* Defined in bytecode.c. */
4266 extern void syms_of_bytecode (void);
4267 extern struct byte_stack
*byte_stack_list
;
4269 extern void mark_byte_stack (void);
4271 extern void unmark_byte_stack (void);
4272 extern Lisp_Object
exec_byte_code (Lisp_Object
, Lisp_Object
, Lisp_Object
,
4273 Lisp_Object
, ptrdiff_t, Lisp_Object
*);
4275 /* Defined in macros.c. */
4276 extern void init_macros (void);
4277 extern void syms_of_macros (void);
4279 /* Defined in undo.c. */
4280 extern void truncate_undo_list (struct buffer
*);
4281 extern void record_insert (ptrdiff_t, ptrdiff_t);
4282 extern void record_delete (ptrdiff_t, Lisp_Object
, bool);
4283 extern void record_first_change (void);
4284 extern void record_change (ptrdiff_t, ptrdiff_t);
4285 extern void record_property_change (ptrdiff_t, ptrdiff_t,
4286 Lisp_Object
, Lisp_Object
,
4288 extern void syms_of_undo (void);
4290 /* Defined in textprop.c. */
4291 extern void report_interval_modification (Lisp_Object
, Lisp_Object
);
4293 /* Defined in menu.c. */
4294 extern void syms_of_menu (void);
4296 /* Defined in xmenu.c. */
4297 extern void syms_of_xmenu (void);
4299 /* Defined in termchar.h. */
4300 struct tty_display_info
;
4302 /* Defined in termhooks.h. */
4305 /* Defined in sysdep.c. */
4306 #ifndef HAVE_GET_CURRENT_DIR_NAME
4307 extern char *get_current_dir_name (void);
4309 extern void stuff_char (char c
);
4310 extern void init_foreground_group (void);
4311 extern void sys_subshell (void);
4312 extern void sys_suspend (void);
4313 extern void discard_tty_input (void);
4314 extern void init_sys_modes (struct tty_display_info
*);
4315 extern void reset_sys_modes (struct tty_display_info
*);
4316 extern void init_all_sys_modes (void);
4317 extern void reset_all_sys_modes (void);
4318 extern void child_setup_tty (int);
4319 extern void setup_pty (int);
4320 extern int set_window_size (int, int, int);
4321 extern EMACS_INT
get_random (void);
4322 extern void seed_random (void *, ptrdiff_t);
4323 extern void init_random (void);
4324 extern void emacs_backtrace (int);
4325 extern _Noreturn
void emacs_abort (void) NO_INLINE
;
4326 extern int emacs_open (const char *, int, int);
4327 extern int emacs_pipe (int[2]);
4328 extern int emacs_close (int);
4329 extern ptrdiff_t emacs_read (int, void *, ptrdiff_t);
4330 extern ptrdiff_t emacs_write (int, void const *, ptrdiff_t);
4331 extern ptrdiff_t emacs_write_sig (int, void const *, ptrdiff_t);
4332 extern void emacs_perror (char const *);
4334 extern void unlock_all_files (void);
4335 extern void lock_file (Lisp_Object
);
4336 extern void unlock_file (Lisp_Object
);
4337 extern void unlock_buffer (struct buffer
*);
4338 extern void syms_of_filelock (void);
4339 extern int str_collate (Lisp_Object
, Lisp_Object
, Lisp_Object
, Lisp_Object
);
4341 /* Defined in sound.c. */
4342 extern void syms_of_sound (void);
4344 /* Defined in category.c. */
4345 extern void init_category_once (void);
4346 extern Lisp_Object
char_category_set (int);
4347 extern void syms_of_category (void);
4349 /* Defined in ccl.c. */
4350 extern void syms_of_ccl (void);
4352 /* Defined in dired.c. */
4353 extern void syms_of_dired (void);
4354 extern Lisp_Object
directory_files_internal (Lisp_Object
, Lisp_Object
,
4355 Lisp_Object
, Lisp_Object
,
4358 /* Defined in term.c. */
4359 extern int *char_ins_del_vector
;
4360 extern void syms_of_term (void);
4361 extern _Noreturn
void fatal (const char *msgid
, ...)
4362 ATTRIBUTE_FORMAT_PRINTF (1, 2);
4364 /* Defined in terminal.c. */
4365 extern void syms_of_terminal (void);
4367 /* Defined in font.c. */
4368 extern void syms_of_font (void);
4369 extern void init_font (void);
4371 #ifdef HAVE_WINDOW_SYSTEM
4372 /* Defined in fontset.c. */
4373 extern void syms_of_fontset (void);
4376 /* Defined in gfilenotify.c */
4377 #ifdef HAVE_GFILENOTIFY
4378 extern void globals_of_gfilenotify (void);
4379 extern void syms_of_gfilenotify (void);
4382 /* Defined in inotify.c */
4384 extern void syms_of_inotify (void);
4387 #ifdef HAVE_W32NOTIFY
4388 /* Defined on w32notify.c. */
4389 extern void syms_of_w32notify (void);
4392 /* Defined in xfaces.c. */
4393 extern Lisp_Object Vface_alternative_font_family_alist
;
4394 extern Lisp_Object Vface_alternative_font_registry_alist
;
4395 extern void syms_of_xfaces (void);
4397 #ifdef HAVE_X_WINDOWS
4398 /* Defined in xfns.c. */
4399 extern void syms_of_xfns (void);
4401 /* Defined in xsmfns.c. */
4402 extern void syms_of_xsmfns (void);
4404 /* Defined in xselect.c. */
4405 extern void syms_of_xselect (void);
4407 /* Defined in xterm.c. */
4408 extern void init_xterm (void);
4409 extern void syms_of_xterm (void);
4410 #endif /* HAVE_X_WINDOWS */
4412 #ifdef HAVE_WINDOW_SYSTEM
4413 /* Defined in xterm.c, nsterm.m, w32term.c. */
4414 extern char *x_get_keysym_name (int);
4415 #endif /* HAVE_WINDOW_SYSTEM */
4418 /* Defined in xml.c. */
4419 extern void syms_of_xml (void);
4420 extern void xml_cleanup_parser (void);
4424 /* Defined in decompress.c. */
4425 extern void syms_of_decompress (void);
4429 /* Defined in dbusbind.c. */
4430 void init_dbusbind (void);
4431 void syms_of_dbusbind (void);
4435 /* Defined in profiler.c. */
4436 extern bool profiler_memory_running
;
4437 extern void malloc_probe (size_t);
4438 extern void syms_of_profiler (void);
4442 /* Defined in msdos.c, w32.c. */
4443 extern char *emacs_root_dir (void);
4446 /* Defined in lastfile.c. */
4447 extern char my_edata
[];
4448 extern char my_endbss
[];
4449 extern char *my_endbss_static
;
4451 /* True means ^G can quit instantly. */
4452 extern bool immediate_quit
;
4454 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1));
4455 extern void *xzalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1));
4456 extern void *xrealloc (void *, size_t) ATTRIBUTE_ALLOC_SIZE ((2));
4457 extern void xfree (void *);
4458 extern void *xnmalloc (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2));
4459 extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t)
4460 ATTRIBUTE_ALLOC_SIZE ((2,3));
4461 extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t);
4463 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC
;
4464 extern char *xlispstrdup (Lisp_Object
) ATTRIBUTE_MALLOC
;
4465 extern void dupstring (char **, char const *);
4467 /* Make DEST a copy of STRING's data. Return a pointer to DEST's terminating
4468 null byte. This is like stpcpy, except the source is a Lisp string. */
4471 lispstpcpy (char *dest
, Lisp_Object string
)
4473 ptrdiff_t len
= SBYTES (string
);
4474 memcpy (dest
, SDATA (string
), len
+ 1);
4478 extern void xputenv (const char *);
4480 extern char *egetenv_internal (const char *, ptrdiff_t);
4483 egetenv (const char *var
)
4485 /* When VAR is a string literal, strlen can be optimized away. */
4486 return egetenv_internal (var
, strlen (var
));
4489 /* Set up the name of the machine we're running on. */
4490 extern void init_system_name (void);
4492 /* Return the absolute value of X. X should be a signed integer
4493 expression without side effects, and X's absolute value should not
4494 exceed the maximum for its promoted type. This is called 'eabs'
4495 because 'abs' is reserved by the C standard. */
4496 #define eabs(x) ((x) < 0 ? -(x) : (x))
4498 /* Return a fixnum or float, depending on whether VAL fits in a Lisp
4501 #define make_fixnum_or_float(val) \
4502 (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val))
4504 /* SAFE_ALLOCA normally allocates memory on the stack, but if size is
4505 larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */
4507 enum MAX_ALLOCA
{ MAX_ALLOCA
= 16 * 1024 };
4509 extern void *record_xmalloc (size_t) ATTRIBUTE_ALLOC_SIZE ((1));
4511 #define USE_SAFE_ALLOCA \
4512 ptrdiff_t sa_avail = MAX_ALLOCA; \
4513 ptrdiff_t sa_count = SPECPDL_INDEX (); bool sa_must_free = false
4515 #define AVAIL_ALLOCA(size) (sa_avail -= (size), alloca (size))
4517 /* SAFE_ALLOCA allocates a simple buffer. */
4519 #define SAFE_ALLOCA(size) ((size) <= sa_avail \
4520 ? AVAIL_ALLOCA (size) \
4521 : (sa_must_free = true, record_xmalloc (size)))
4523 /* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER *
4524 NITEMS items, each of the same type as *BUF. MULTIPLIER must
4525 positive. The code is tuned for MULTIPLIER being a constant. */
4527 #define SAFE_NALLOCA(buf, multiplier, nitems) \
4529 if ((nitems) <= sa_avail / sizeof *(buf) / (multiplier)) \
4530 (buf) = AVAIL_ALLOCA (sizeof *(buf) * (multiplier) * (nitems)); \
4533 (buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \
4534 sa_must_free = true; \
4535 record_unwind_protect_ptr (xfree, buf); \
4539 /* SAFE_ALLOCA_STRING allocates a C copy of a Lisp string. */
4541 #define SAFE_ALLOCA_STRING(ptr, string) \
4543 (ptr) = SAFE_ALLOCA (SBYTES (string) + 1); \
4544 memcpy (ptr, SDATA (string), SBYTES (string) + 1); \
4547 /* SAFE_FREE frees xmalloced memory and enables GC as needed. */
4549 #define SAFE_FREE() \
4551 if (sa_must_free) { \
4552 sa_must_free = false; \
4553 unbind_to (sa_count, Qnil); \
4558 /* Return floor (NBYTES / WORD_SIZE). */
4561 lisp_word_count (ptrdiff_t nbytes
)
4566 case 2: return nbytes
>> 1;
4567 case 4: return nbytes
>> 2;
4568 case 8: return nbytes
>> 3;
4569 case 16: return nbytes
>> 4;
4571 return nbytes
/ word_size
- (nbytes
% word_size
< 0);
4574 /* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */
4576 #define SAFE_ALLOCA_LISP(buf, nelt) \
4578 if ((nelt) <= lisp_word_count (sa_avail)) \
4579 (buf) = AVAIL_ALLOCA ((nelt) * word_size); \
4580 else if ((nelt) <= min (PTRDIFF_MAX, SIZE_MAX) / word_size) \
4583 (buf) = xmalloc ((nelt) * word_size); \
4584 arg_ = make_save_memory (buf, nelt); \
4585 sa_must_free = true; \
4586 record_unwind_protect (free_save_value, arg_); \
4589 memory_full (SIZE_MAX); \
4593 /* If USE_STACK_LISP_OBJECTS, define macros that and functions that allocate
4594 block-scoped conses and strings. These objects are not
4595 managed by the garbage collector, so they are dangerous: passing them
4596 out of their scope (e.g., to user code) results in undefined behavior.
4597 Conversely, they have better performance because GC is not involved.
4599 This feature is experimental and requires careful debugging.
4600 Build with CPPFLAGS='-DUSE_STACK_LISP_OBJECTS=0' to disable it. */
4602 #ifndef USE_STACK_LISP_OBJECTS
4603 # define USE_STACK_LISP_OBJECTS true
4606 /* USE_STACK_LISP_OBJECTS requires GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS. */
4608 #if GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS
4609 # undef USE_STACK_LISP_OBJECTS
4610 # define USE_STACK_LISP_OBJECTS false
4613 #ifdef GC_CHECK_STRING_BYTES
4614 enum { defined_GC_CHECK_STRING_BYTES
= true };
4616 enum { defined_GC_CHECK_STRING_BYTES
= false };
4619 /* Struct inside unions that are typically no larger and aligned enough. */
4624 double d
; intmax_t i
; void *p
;
4627 union Aligned_String
4629 struct Lisp_String s
;
4630 double d
; intmax_t i
; void *p
;
4633 /* True for stack-based cons and string implementations, respectively.
4634 Use stack-based strings only if stack-based cons also works.
4635 Otherwise, STACK_CONS would create heap-based cons cells that
4636 could point to stack-based strings, which is a no-no. */
4640 USE_STACK_CONS
= (USE_STACK_LISP_OBJECTS
4641 && alignof (union Aligned_Cons
) % GCALIGNMENT
== 0),
4642 USE_STACK_STRING
= (USE_STACK_CONS
4643 && !defined_GC_CHECK_STRING_BYTES
4644 && alignof (union Aligned_String
) % GCALIGNMENT
== 0)
4647 /* Auxiliary macros used for auto allocation of Lisp objects. Please
4648 use these only in macros like AUTO_CONS that declare a local
4649 variable whose lifetime will be clear to the programmer. */
4650 #define STACK_CONS(a, b) \
4651 make_lisp_ptr (&(union Aligned_Cons) { { a, { b } } }.s, Lisp_Cons)
4652 #define AUTO_CONS_EXPR(a, b) \
4653 (USE_STACK_CONS ? STACK_CONS (a, b) : Fcons (a, b))
4655 /* Declare NAME as an auto Lisp cons or short list if possible, a
4656 GC-based one otherwise. This is in the sense of the C keyword
4657 'auto'; i.e., the object has the lifetime of the containing block.
4658 The resulting object should not be made visible to user Lisp code. */
4660 #define AUTO_CONS(name, a, b) Lisp_Object name = AUTO_CONS_EXPR (a, b)
4661 #define AUTO_LIST1(name, a) \
4662 Lisp_Object name = (USE_STACK_CONS ? STACK_CONS (a, Qnil) : list1 (a))
4663 #define AUTO_LIST2(name, a, b) \
4664 Lisp_Object name = (USE_STACK_CONS \
4665 ? STACK_CONS (a, STACK_CONS (b, Qnil)) \
4667 #define AUTO_LIST3(name, a, b, c) \
4668 Lisp_Object name = (USE_STACK_CONS \
4669 ? STACK_CONS (a, STACK_CONS (b, STACK_CONS (c, Qnil))) \
4671 #define AUTO_LIST4(name, a, b, c, d) \
4674 ? STACK_CONS (a, STACK_CONS (b, STACK_CONS (c, \
4675 STACK_CONS (d, Qnil)))) \
4676 : list4 (a, b, c, d))
4678 /* Check whether stack-allocated strings are ASCII-only. */
4680 #if defined (ENABLE_CHECKING) && USE_STACK_LISP_OBJECTS
4681 extern const char *verify_ascii (const char *);
4683 # define verify_ascii(str) (str)
4686 /* Declare NAME as an auto Lisp string if possible, a GC-based one if not.
4687 Take its value from STR. STR is not necessarily copied and should
4688 contain only ASCII characters. The resulting Lisp string should
4689 not be modified or made visible to user code. */
4691 #define AUTO_STRING(name, str) \
4692 Lisp_Object name = \
4695 ((&(union Aligned_String) \
4696 {{strlen (str), -1, 0, (unsigned char *) verify_ascii (str)}}.s), \
4698 : build_string (verify_ascii (str)))
4700 /* Loop over all tails of a list, checking for cycles.
4701 FIXME: Make tortoise and n internal declarations.
4702 FIXME: Unroll the loop body so we don't need `n'. */
4703 #define FOR_EACH_TAIL(hare, list, tortoise, n) \
4704 for ((tortoise) = (hare) = (list), (n) = true; \
4706 (hare = XCDR (hare), (n) = !(n), \
4708 ? (EQ (hare, tortoise) \
4709 ? xsignal1 (Qcircular_list, list) \
4711 /* Move tortoise before the next iteration, in case */ \
4712 /* the next iteration does an Fsetcdr. */ \
4713 : (void) ((tortoise) = XCDR (tortoise)))))
4715 /* Do a `for' loop over alist values. */
4717 #define FOR_EACH_ALIST_VALUE(head_var, list_var, value_var) \
4718 for ((list_var) = (head_var); \
4719 (CONSP (list_var) && ((value_var) = XCDR (XCAR (list_var)), true)); \
4720 (list_var) = XCDR (list_var))
4722 /* Check whether it's time for GC, and run it if so. */
4727 if ((consing_since_gc
> gc_cons_threshold
4728 && consing_since_gc
> gc_relative_threshold
)
4729 || (!NILP (Vmemory_full
)
4730 && consing_since_gc
> memory_full_cons_threshold
))
4731 Fgarbage_collect ();
4735 functionp (Lisp_Object object
)
4737 if (SYMBOLP (object
) && !NILP (Ffboundp (object
)))
4739 object
= Findirect_function (object
, Qt
);
4741 if (CONSP (object
) && EQ (XCAR (object
), Qautoload
))
4743 /* Autoloaded symbols are functions, except if they load
4744 macros or keymaps. */
4746 for (i
= 0; i
< 4 && CONSP (object
); i
++)
4747 object
= XCDR (object
);
4749 return ! (CONSP (object
) && !NILP (XCAR (object
)));
4754 return XSUBR (object
)->max_args
!= UNEVALLED
;
4755 else if (COMPILEDP (object
))
4757 else if (CONSP (object
))
4759 Lisp_Object car
= XCAR (object
);
4760 return EQ (car
, Qlambda
) || EQ (car
, Qclosure
);
4768 #endif /* EMACS_LISP_H */