Commit | Line | Data |
---|---|---|
3cfe6dfd | 1 | /* Fundamental definitions for GNU Emacs Lisp interpreter. |
e2017fe2 | 2 | |
ab422c4d PE |
3 | Copyright (C) 1985-1987, 1993-1995, 1997-2013 Free Software Foundation, |
4 | Inc. | |
3cfe6dfd JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
b9b1cc14 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
3cfe6dfd | 9 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
3cfe6dfd JB |
12 | |
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
3cfe6dfd | 20 | |
6b61353c KH |
21 | #ifndef EMACS_LISP_H |
22 | #define EMACS_LISP_H | |
23 | ||
0328b6de | 24 | #include <setjmp.h> |
e32a5799 | 25 | #include <stdalign.h> |
6a8033e1 | 26 | #include <stdarg.h> |
f5d9e83a | 27 | #include <stdbool.h> |
89887d67 | 28 | #include <stddef.h> |
4d7e6e51 | 29 | #include <float.h> |
8ac068ac | 30 | #include <inttypes.h> |
dd3482fe | 31 | #include <limits.h> |
6a8033e1 | 32 | |
be44ca6c PE |
33 | #include <intprops.h> |
34 | ||
f162bcc3 PE |
35 | INLINE_HEADER_BEGIN |
36 | #ifndef LISP_INLINE | |
37 | # define LISP_INLINE INLINE | |
38 | #endif | |
39 | ||
03a660a6 PE |
40 | /* The ubiquitous max and min macros. */ |
41 | #undef min | |
42 | #undef max | |
43 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
44 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
45 | ||
34374650 PE |
46 | /* EMACS_INT - signed integer wide enough to hold an Emacs value |
47 | EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if | |
48 | pI - printf length modifier for EMACS_INT | |
49 | EMACS_UINT - unsigned variant of EMACS_INT */ | |
71f88e00 | 50 | #ifndef EMACS_INT_MAX |
34374650 | 51 | # if LONG_MAX < LLONG_MAX && defined WIDE_EMACS_INT |
71f88e00 PE |
52 | typedef long long int EMACS_INT; |
53 | typedef unsigned long long int EMACS_UINT; | |
34374650 | 54 | # define EMACS_INT_MAX LLONG_MAX |
47be4ab5 | 55 | # define pI "ll" |
34374650 | 56 | # elif INT_MAX < LONG_MAX |
71f88e00 PE |
57 | typedef long int EMACS_INT; |
58 | typedef unsigned long int EMACS_UINT; | |
34374650 | 59 | # define EMACS_INT_MAX LONG_MAX |
47be4ab5 PE |
60 | # define pI "l" |
61 | # else | |
71f88e00 PE |
62 | typedef int EMACS_INT; |
63 | typedef unsigned int EMACS_UINT; | |
34374650 | 64 | # define EMACS_INT_MAX INT_MAX |
47be4ab5 PE |
65 | # define pI "" |
66 | # endif | |
68c45bf0 | 67 | #endif |
34374650 PE |
68 | |
69 | /* Number of bits in some machine integer types. */ | |
70 | enum | |
71 | { | |
72 | BITS_PER_CHAR = CHAR_BIT, | |
73 | BITS_PER_SHORT = CHAR_BIT * sizeof (short), | |
74 | BITS_PER_INT = CHAR_BIT * sizeof (int), | |
75 | BITS_PER_LONG = CHAR_BIT * sizeof (long int), | |
76 | BITS_PER_EMACS_INT = CHAR_BIT * sizeof (EMACS_INT) | |
77 | }; | |
ce99fd65 | 78 | |
a81d11a3 PE |
79 | /* printmax_t and uprintmax_t are types for printing large integers. |
80 | These are the widest integers that are supported for printing. | |
81 | pMd etc. are conversions for printing them. | |
82 | On C99 hosts, there's no problem, as even the widest integers work. | |
83 | Fall back on EMACS_INT on pre-C99 hosts. */ | |
84 | #ifdef PRIdMAX | |
85 | typedef intmax_t printmax_t; | |
86 | typedef uintmax_t uprintmax_t; | |
87 | # define pMd PRIdMAX | |
88 | # define pMu PRIuMAX | |
89 | #else | |
90 | typedef EMACS_INT printmax_t; | |
91 | typedef EMACS_UINT uprintmax_t; | |
92 | # define pMd pI"d" | |
93 | # define pMu pI"u" | |
94 | #endif | |
95 | ||
9c4c5f81 PE |
96 | /* Use pD to format ptrdiff_t values, which suffice for indexes into |
97 | buffers and strings. Emacs never allocates objects larger than | |
98 | PTRDIFF_MAX bytes, as they cause problems with pointer subtraction. | |
99 | In C99, pD can always be "t"; configure it here for the sake of | |
100 | pre-C99 libraries such as glibc 2.0 and Solaris 8. */ | |
101 | #if PTRDIFF_MAX == INT_MAX | |
102 | # define pD "" | |
103 | #elif PTRDIFF_MAX == LONG_MAX | |
104 | # define pD "l" | |
105 | #elif PTRDIFF_MAX == LLONG_MAX | |
106 | # define pD "ll" | |
107 | #else | |
108 | # define pD "t" | |
109 | #endif | |
110 | ||
e0b8c689 | 111 | /* Extra internal type checking? */ |
c6129d7e | 112 | |
310fbfa8 PE |
113 | /* Define an Emacs version of 'assert (COND)', since some |
114 | system-defined 'assert's are flaky. COND should be free of side | |
115 | effects; it may or may not be evaluated. */ | |
116 | #ifndef ENABLE_CHECKING | |
117 | # define eassert(X) ((void) (0 && (X))) /* Check that X compiles. */ | |
118 | #else /* ENABLE_CHECKING */ | |
c6129d7e | 119 | |
845ca893 | 120 | extern _Noreturn void die (const char *, const char *, int); |
244ed907 | 121 | |
383b707e KR |
122 | /* The suppress_checking variable is initialized to 0 in alloc.c. Set |
123 | it to 1 using a debugger to temporarily disable aborting on | |
124 | detected internal inconsistencies or error conditions. | |
125 | ||
383b707e | 126 | In some cases, a good compiler may be able to optimize away the |
310fbfa8 | 127 | eassert macro altogether, e.g., if XSTRING (x) uses eassert to test |
383b707e KR |
128 | STRINGP (x), but a particular use of XSTRING is invoked only after |
129 | testing that STRINGP (x) is true, making the test redundant. */ | |
fce31d69 | 130 | extern bool suppress_checking EXTERNALLY_VISIBLE; |
244ed907 | 131 | |
310fbfa8 | 132 | # define eassert(cond) \ |
5013fc08 | 133 | (suppress_checking || (cond) \ |
310fbfa8 | 134 | ? (void) 0 \ |
5013fc08 | 135 | : die (# cond, __FILE__, __LINE__)) |
3694b4ab | 136 | #endif /* ENABLE_CHECKING */ |
b9466edb | 137 | \f |
646b5f55 AS |
138 | /* Use the configure flag --enable-check-lisp-object-type to make |
139 | Lisp_Object use a struct type instead of the default int. The flag | |
140 | causes CHECK_LISP_OBJECT_TYPE to be defined. */ | |
b86cfd28 | 141 | |
b9466edb | 142 | /***** Select the tagging scheme. *****/ |
646b5f55 | 143 | /* The following option controls the tagging scheme: |
b9466edb SM |
144 | - USE_LSB_TAG means that we can assume the least 3 bits of pointers are |
145 | always 0, and we can thus use them to hold tag bits, without | |
146 | restricting our addressing space. | |
147 | ||
bfe3e0a2 PE |
148 | If ! USE_LSB_TAG, then use the top 3 bits for tagging, thus |
149 | restricting our possible address range. | |
b9466edb SM |
150 | |
151 | USE_LSB_TAG not only requires the least 3 bits of pointers returned by | |
152 | malloc to be 0 but also needs to be able to impose a mult-of-8 alignment | |
153 | on the few static Lisp_Objects used: all the defsubr as well | |
154 | as the two special buffers buffer_defaults and buffer_local_symbols. */ | |
155 | ||
4706125e PE |
156 | enum Lisp_Bits |
157 | { | |
158 | /* Number of bits in a Lisp_Object tag. This can be used in #if, | |
159 | and for GDB's sake also as a regular symbol. */ | |
160 | GCTYPEBITS = | |
8c9afb46 | 161 | #define GCTYPEBITS 3 |
4706125e PE |
162 | GCTYPEBITS, |
163 | ||
b6b3b294 PE |
164 | /* 2**GCTYPEBITS. This must be a macro that expands to a literal |
165 | integer constant, for MSVC. */ | |
e32a5799 | 166 | #define GCALIGNMENT 8 |
e32a5799 | 167 | |
4706125e PE |
168 | /* Number of bits in a Lisp_Object value, not counting the tag. */ |
169 | VALBITS = BITS_PER_EMACS_INT - GCTYPEBITS, | |
1781b9e9 | 170 | |
4706125e PE |
171 | /* Number of bits in a Lisp fixnum tag. */ |
172 | INTTYPEBITS = GCTYPEBITS - 1, | |
173 | ||
174 | /* Number of bits in a Lisp fixnum value, not counting the tag. */ | |
175 | FIXNUM_BITS = VALBITS + 1 | |
176 | }; | |
34374650 | 177 | |
e32a5799 PE |
178 | #if GCALIGNMENT != 1 << GCTYPEBITS |
179 | # error "GCALIGNMENT and GCTYPEBITS are inconsistent" | |
180 | #endif | |
181 | ||
34374650 PE |
182 | /* The maximum value that can be stored in a EMACS_INT, assuming all |
183 | bits other than the type bits contribute to a nonnegative signed value. | |
184 | This can be used in #if, e.g., '#if VAL_MAX < UINTPTR_MAX' below. */ | |
185 | #define VAL_MAX (EMACS_INT_MAX >> (GCTYPEBITS - 1)) | |
310f5bd4 | 186 | |
bfe3e0a2 PE |
187 | /* Unless otherwise specified, use USE_LSB_TAG on systems where: */ |
188 | #ifndef USE_LSB_TAG | |
189 | /* 1. We know malloc returns a multiple of 8. */ | |
190 | # if (defined GNU_MALLOC || defined DOUG_LEA_MALLOC || defined __GLIBC__ \ | |
191 | || defined DARWIN_OS || defined __sun) | |
192 | /* 2. We can specify multiple-of-8 alignment on static variables. */ | |
e32a5799 | 193 | # ifdef alignas |
bfe3e0a2 PE |
194 | /* 3. Pointers-as-ints exceed VAL_MAX. |
195 | On hosts where pointers-as-ints do not exceed VAL_MAX, USE_LSB_TAG is: | |
27f3c637 PE |
196 | a. unnecessary, because the top bits of an EMACS_INT are unused, and |
197 | b. slower, because it typically requires extra masking. | |
bfe3e0a2 PE |
198 | So, default USE_LSB_TAG to 1 only on hosts where it might be useful. */ |
199 | # if VAL_MAX < UINTPTR_MAX | |
200 | # define USE_LSB_TAG 1 | |
201 | # endif | |
310f5bd4 | 202 | # endif |
b9466edb SM |
203 | # endif |
204 | #endif | |
5eceb8fb PE |
205 | #ifdef USE_LSB_TAG |
206 | # undef USE_LSB_TAG | |
4706125e | 207 | enum enum_USE_LSB_TAG { USE_LSB_TAG = 1 }; |
5eceb8fb PE |
208 | # define USE_LSB_TAG 1 |
209 | #else | |
4706125e | 210 | enum enum_USE_LSB_TAG { USE_LSB_TAG = 0 }; |
bfe3e0a2 PE |
211 | # define USE_LSB_TAG 0 |
212 | #endif | |
b9466edb | 213 | |
e32a5799 PE |
214 | #ifndef alignas |
215 | # define alignas(alignment) /* empty */ | |
bfe3e0a2 | 216 | # if USE_LSB_TAG |
e32a5799 | 217 | # error "USE_LSB_TAG requires alignas" |
b9466edb | 218 | # endif |
b9466edb SM |
219 | #endif |
220 | ||
e0b8c689 | 221 | |
84575e67 PE |
222 | /* Some operations are so commonly executed that they are implemented |
223 | as macros, not functions, because otherwise runtime performance would | |
224 | suffer too much when compiling with GCC without optimization. | |
225 | There's no need to inline everything, just the operations that | |
226 | would otherwise cause a serious performance problem. | |
227 | ||
228 | For each such operation OP, define a macro lisp_h_OP that contains | |
5ebb1ee6 | 229 | the operation's implementation. That way, OP can be implemented |
84575e67 PE |
230 | via a macro definition like this: |
231 | ||
232 | #define OP(x) lisp_h_OP (x) | |
233 | ||
234 | and/or via a function definition like this: | |
235 | ||
236 | LISP_MACRO_DEFUN (OP, Lisp_Object, (Lisp_Object x), (x)) | |
237 | ||
238 | which macro-expands to this: | |
239 | ||
240 | Lisp_Object (OP) (Lisp_Object x) { return lisp_h_OP (x); } | |
241 | ||
242 | without worrying about the implementations diverging, since | |
243 | lisp_h_OP defines the actual implementation. The lisp_h_OP macros | |
244 | are intended to be private to this include file, and should not be | |
245 | used elsewhere. | |
246 | ||
247 | FIXME: Remove the lisp_h_OP macros, and define just the inline OP | |
248 | functions, once most developers have access to GCC 4.8 or later and | |
249 | can use "gcc -Og" to debug. Maybe in the year 2016. See | |
250 | Bug#11935. | |
251 | ||
252 | Commentary for these macros can be found near their corresponding | |
253 | functions, below. */ | |
254 | ||
255 | #if CHECK_LISP_OBJECT_TYPE | |
256 | # define lisp_h_XLI(o) ((o).i) | |
257 | # define lisp_h_XIL(i) ((Lisp_Object) { i }) | |
258 | #else | |
259 | # define lisp_h_XLI(o) (o) | |
260 | # define lisp_h_XIL(i) (i) | |
261 | #endif | |
262 | #define lisp_h_CHECK_LIST_CONS(x, y) CHECK_TYPE (CONSP (x), Qlistp, y) | |
263 | #define lisp_h_CHECK_NUMBER(x) CHECK_TYPE (INTEGERP (x), Qintegerp, x) | |
264 | #define lisp_h_CHECK_SYMBOL(x) CHECK_TYPE (SYMBOLP (x), Qsymbolp, x) | |
265 | #define lisp_h_CHECK_TYPE(ok, Qxxxp, x) \ | |
266 | ((ok) ? (void) 0 : (void) wrong_type_argument (Qxxxp, x)) | |
267 | #define lisp_h_CONSP(x) (XTYPE (x) == Lisp_Cons) | |
268 | #define lisp_h_EQ(x, y) (XLI (x) == XLI (y)) | |
269 | #define lisp_h_FLOATP(x) (XTYPE (x) == Lisp_Float) | |
270 | #define lisp_h_INTEGERP(x) ((XTYPE (x) & ~Lisp_Int1) == 0) | |
271 | #define lisp_h_MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker) | |
272 | #define lisp_h_MISCP(x) (XTYPE (x) == Lisp_Misc) | |
273 | #define lisp_h_NILP(x) EQ (x, Qnil) | |
274 | #define lisp_h_SET_SYMBOL_VAL(sym, v) \ | |
275 | (eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value = (v)) | |
276 | #define lisp_h_SYMBOL_CONSTANT_P(sym) (XSYMBOL (sym)->constant) | |
277 | #define lisp_h_SYMBOL_VAL(sym) \ | |
278 | (eassert ((sym)->redirect == SYMBOL_PLAINVAL), (sym)->val.value) | |
279 | #define lisp_h_SYMBOLP(x) (XTYPE (x) == Lisp_Symbol) | |
280 | #define lisp_h_VECTORLIKEP(x) (XTYPE (x) == Lisp_Vectorlike) | |
281 | #define lisp_h_XCAR(c) XCONS (c)->car | |
282 | #define lisp_h_XCDR(c) XCONS (c)->u.cdr | |
283 | #define lisp_h_XCONS(a) \ | |
284 | (eassert (CONSP (a)), (struct Lisp_Cons *) XUNTAG (a, Lisp_Cons)) | |
285 | #define lisp_h_XHASH(a) XUINT (a) | |
286 | #define lisp_h_XPNTR(a) \ | |
287 | ((void *) (intptr_t) ((XLI (a) & VALMASK) | DATA_SEG_BITS)) | |
288 | #define lisp_h_XSYMBOL(a) \ | |
289 | (eassert (SYMBOLP (a)), (struct Lisp_Symbol *) XUNTAG (a, Lisp_Symbol)) | |
290 | #ifndef GC_CHECK_CONS_LIST | |
291 | # define lisp_h_check_cons_list() ((void) 0) | |
292 | #endif | |
293 | #if USE_LSB_TAG | |
294 | # define lisp_h_make_number(n) XIL ((EMACS_INT) (n) << INTTYPEBITS) | |
295 | # define lisp_h_XFASTINT(a) XINT (a) | |
296 | # define lisp_h_XINT(a) (XLI (a) >> INTTYPEBITS) | |
297 | # define lisp_h_XTYPE(a) ((enum Lisp_Type) (XLI (a) & ~VALMASK)) | |
298 | # define lisp_h_XUNTAG(a, type) ((void *) (XLI (a) - (type))) | |
299 | #endif | |
300 | ||
301 | /* When compiling via gcc -O0, define the key operations as macros, as | |
302 | Emacs is too slow otherwise. To disable this optimization, compile | |
303 | with -DINLINING=0. */ | |
304 | #if (defined __NO_INLINE__ \ | |
305 | && ! defined __OPTIMIZE__ && ! defined __OPTIMIZE_SIZE__ \ | |
306 | && ! (defined INLINING && ! INLINING)) | |
307 | # define XLI(o) lisp_h_XLI (o) | |
308 | # define XIL(i) lisp_h_XIL (i) | |
309 | # define CHECK_LIST_CONS(x, y) lisp_h_CHECK_LIST_CONS (x, y) | |
310 | # define CHECK_NUMBER(x) lisp_h_CHECK_NUMBER (x) | |
311 | # define CHECK_SYMBOL(x) lisp_h_CHECK_SYMBOL (x) | |
312 | # define CHECK_TYPE(ok, Qxxxp, x) lisp_h_CHECK_TYPE (ok, Qxxxp, x) | |
313 | # define CONSP(x) lisp_h_CONSP (x) | |
314 | # define EQ(x, y) lisp_h_EQ (x, y) | |
315 | # define FLOATP(x) lisp_h_FLOATP (x) | |
316 | # define INTEGERP(x) lisp_h_INTEGERP (x) | |
317 | # define MARKERP(x) lisp_h_MARKERP (x) | |
318 | # define MISCP(x) lisp_h_MISCP (x) | |
319 | # define NILP(x) lisp_h_NILP (x) | |
320 | # define SET_SYMBOL_VAL(sym, v) lisp_h_SET_SYMBOL_VAL (sym, v) | |
321 | # define SYMBOL_CONSTANT_P(sym) lisp_h_SYMBOL_CONSTANT_P (sym) | |
322 | # define SYMBOL_VAL(sym) lisp_h_SYMBOL_VAL (sym) | |
323 | # define SYMBOLP(x) lisp_h_SYMBOLP (x) | |
324 | # define VECTORLIKEP(x) lisp_h_VECTORLIKEP (x) | |
325 | # define XCAR(c) lisp_h_XCAR (c) | |
326 | # define XCDR(c) lisp_h_XCDR (c) | |
327 | # define XCONS(a) lisp_h_XCONS (a) | |
328 | # define XHASH(a) lisp_h_XHASH (a) | |
329 | # define XPNTR(a) lisp_h_XPNTR (a) | |
330 | # define XSYMBOL(a) lisp_h_XSYMBOL (a) | |
331 | # ifndef GC_CHECK_CONS_LIST | |
332 | # define check_cons_list() lisp_h_check_cons_list () | |
333 | # endif | |
334 | # if USE_LSB_TAG | |
335 | # define make_number(n) lisp_h_make_number (n) | |
336 | # define XFASTINT(a) lisp_h_XFASTINT (a) | |
337 | # define XINT(a) lisp_h_XINT (a) | |
338 | # define XTYPE(a) lisp_h_XTYPE (a) | |
339 | # define XUNTAG(a, type) lisp_h_XUNTAG (a, type) | |
340 | # endif | |
341 | #endif | |
342 | ||
343 | /* Define NAME as a lisp.h inline function that returns TYPE and has | |
344 | arguments declared as ARGDECLS and passed as ARGS. ARGDECLS and | |
345 | ARGS should be parenthesized. Implement the function by calling | |
346 | lisp_h_NAME ARGS. */ | |
347 | #define LISP_MACRO_DEFUN(name, type, argdecls, args) \ | |
348 | LISP_INLINE type (name) argdecls { return lisp_h_##name args; } | |
349 | ||
350 | /* like LISP_MACRO_DEFUN, except NAME returns void. */ | |
351 | #define LISP_MACRO_DEFUN_VOID(name, argdecls, args) \ | |
352 | LISP_INLINE void (name) argdecls { lisp_h_##name args; } | |
353 | ||
354 | ||
99a3d506 | 355 | /* Define the fundamental Lisp data structures. */ |
3cfe6dfd | 356 | |
c95a4266 EZ |
357 | /* This is the set of Lisp data types. If you want to define a new |
358 | data type, read the comments after Lisp_Fwd_Type definition | |
359 | below. */ | |
3cfe6dfd | 360 | |
2b570124 PE |
361 | /* Lisp integers use 2 tags, to give them one extra bit, thus |
362 | extending their range from, e.g., -2^28..2^28-1 to -2^29..2^29-1. */ | |
eff1c190 | 363 | #define INTMASK (EMACS_INT_MAX >> (INTTYPEBITS - 1)) |
2b570124 | 364 | #define case_Lisp_Int case Lisp_Int0: case Lisp_Int1 |
2de9f71c | 365 | |
29abe551 PE |
366 | /* Idea stolen from GDB. Pedantic GCC complains about enum bitfields, |
367 | MSVC doesn't support them, and xlc complains vociferously about them. */ | |
368 | #if defined __STRICT_ANSI__ || defined _MSC_VER || defined __IBMC__ | |
a6fc3b5c EZ |
369 | #define ENUM_BF(TYPE) unsigned int |
370 | #else | |
371 | #define ENUM_BF(TYPE) enum TYPE | |
372 | #endif | |
373 | ||
374 | ||
3cfe6dfd JB |
375 | enum Lisp_Type |
376 | { | |
99a3d506 | 377 | /* Integer. XINT (obj) is the integer value. */ |
2de9f71c | 378 | Lisp_Int0 = 0, |
d5040d2d | 379 | Lisp_Int1 = USE_LSB_TAG ? 1 << INTTYPEBITS : 1, |
3cfe6dfd | 380 | |
99a3d506 | 381 | /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */ |
2de9f71c | 382 | Lisp_Symbol = 2, |
3cfe6dfd | 383 | |
84d1833e KH |
384 | /* Miscellaneous. XMISC (object) points to a union Lisp_Misc, |
385 | whose first member indicates the subtype. */ | |
2de9f71c | 386 | Lisp_Misc = 3, |
3cfe6dfd JB |
387 | |
388 | /* String. XSTRING (object) points to a struct Lisp_String. | |
99a3d506 | 389 | The length of the string, and its contents, are stored therein. */ |
d5040d2d | 390 | Lisp_String = USE_LSB_TAG ? 1 : 1 << INTTYPEBITS, |
3cfe6dfd | 391 | |
b5088f80 | 392 | /* Vector of Lisp objects, or something resembling it. |
7c06ac2b | 393 | XVECTOR (object) points to a struct Lisp_Vector, which contains |
b5088f80 KH |
394 | the size and contents. The size field also contains the type |
395 | information, if it's not a real vector object. */ | |
2de9f71c | 396 | Lisp_Vectorlike = 5, |
3cfe6dfd | 397 | |
99a3d506 | 398 | /* Cons. XCONS (object) points to a struct Lisp_Cons. */ |
2de9f71c | 399 | Lisp_Cons = 6, |
4d1207f6 | 400 | |
29abe551 | 401 | Lisp_Float = 7 |
3cfe6dfd JB |
402 | }; |
403 | ||
a32fa736 | 404 | /* This is the set of data types that share a common structure. |
c98adc1b KH |
405 | The first member of the structure is a type code from this set. |
406 | The enum values are arbitrary, but we'll use large numbers to make it | |
407 | more likely that we'll spot the error if a random word in memory is | |
408 | mistakenly interpreted as a Lisp_Misc. */ | |
1c4ca5a3 KH |
409 | enum Lisp_Misc_Type |
410 | { | |
c98adc1b | 411 | Lisp_Misc_Free = 0x5eab, |
84d1833e | 412 | Lisp_Misc_Marker, |
99a3d506 | 413 | Lisp_Misc_Overlay, |
222151aa | 414 | Lisp_Misc_Save_Value, |
99a3d506 RS |
415 | /* Currently floats are not a misc type, |
416 | but let's define this in case we want to change that. */ | |
417 | Lisp_Misc_Float, | |
418 | /* This is not a type code. It is for range checking. */ | |
419 | Lisp_Misc_Limit | |
1c4ca5a3 KH |
420 | }; |
421 | ||
ce5b453a SM |
422 | /* These are the types of forwarding objects used in the value slot |
423 | of symbols for special built-in variables whose value is stored in | |
424 | C variables. */ | |
425 | enum Lisp_Fwd_Type | |
426 | { | |
427 | Lisp_Fwd_Int, /* Fwd to a C `int' variable. */ | |
428 | Lisp_Fwd_Bool, /* Fwd to a C boolean var. */ | |
429 | Lisp_Fwd_Obj, /* Fwd to a C Lisp_Object variable. */ | |
430 | Lisp_Fwd_Buffer_Obj, /* Fwd to a Lisp_Object field of buffers. */ | |
29abe551 | 431 | Lisp_Fwd_Kboard_Obj /* Fwd to a Lisp_Object field of kboards. */ |
ce5b453a SM |
432 | }; |
433 | ||
c95a4266 EZ |
434 | /* If you want to define a new Lisp data type, here are some |
435 | instructions. See the thread at | |
436 | http://lists.gnu.org/archive/html/emacs-devel/2012-10/msg00561.html | |
437 | for more info. | |
438 | ||
439 | First, there are already a couple of Lisp types that can be used if | |
440 | your new type does not need to be exposed to Lisp programs nor | |
441 | displayed to users. These are Lisp_Save_Value, a Lisp_Misc | |
791ef5f8 | 442 | subtype; and PVEC_OTHER, a kind of vectorlike object. The former |
c95a4266 | 443 | is suitable for temporarily stashing away pointers and integers in |
1396ac86 | 444 | a Lisp object. The latter is useful for vector-like Lisp objects |
c95a4266 EZ |
445 | that need to be used as part of other objects, but which are never |
446 | shown to users or Lisp code (search for PVEC_OTHER in xterm.c for | |
447 | an example). | |
448 | ||
449 | These two types don't look pretty when printed, so they are | |
450 | unsuitable for Lisp objects that can be exposed to users. | |
451 | ||
452 | To define a new data type, add one more Lisp_Misc subtype or one | |
453 | more pseudovector subtype. Pseudovectors are more suitable for | |
454 | objects with several slots that need to support fast random access, | |
791ef5f8 | 455 | while Lisp_Misc types are for everything else. A pseudovector object |
c95a4266 EZ |
456 | provides one or more slots for Lisp objects, followed by struct |
457 | members that are accessible only from C. A Lisp_Misc object is a | |
458 | wrapper for a C struct that can contain anything you like. | |
459 | ||
8847a0de DA |
460 | Explicit freeing is discouraged for Lisp objects in general. But if |
461 | you really need to exploit this, use Lisp_Misc (check free_misc in | |
462 | alloc.c to see why). There is no way to free a vectorlike object. | |
463 | ||
c95a4266 EZ |
464 | To add a new pseudovector type, extend the pvec_type enumeration; |
465 | to add a new Lisp_Misc, extend the Lisp_Misc_Type enumeration. | |
466 | ||
467 | For a Lisp_Misc, you will also need to add your entry to union | |
468 | Lisp_Misc (but make sure the first word has the same structure as | |
469 | the others, starting with a 16-bit member of the Lisp_Misc_Type | |
470 | enumeration and a 1-bit GC markbit) and make sure the overall size | |
471 | of the union is not increased by your addition. | |
472 | ||
8847a0de DA |
473 | For a new pseudovector, it's highly desirable to limit the size |
474 | of your data type by VBLOCK_BYTES_MAX bytes (defined in alloc.c). | |
475 | Otherwise you will need to change sweep_vectors (also in alloc.c). | |
476 | ||
c95a4266 EZ |
477 | Then you will need to add switch branches in print.c (in |
478 | print_object, to print your object, and possibly also in | |
479 | print_preprocess) and to alloc.c, to mark your object (in | |
480 | mark_object) and to free it (in gc_sweep). The latter is also the | |
481 | right place to call any code specific to your data type that needs | |
482 | to run when the object is recycled -- e.g., free any additional | |
483 | resources allocated for it that are not Lisp objects. You can even | |
484 | make a pointer to the function that frees the resources a slot in | |
485 | your object -- this way, the same object could be used to represent | |
486 | several disparate C structures. */ | |
487 | ||
646b5f55 | 488 | #ifdef CHECK_LISP_OBJECT_TYPE |
3cfe6dfd | 489 | |
646b5f55 AS |
490 | typedef struct { EMACS_INT i; } Lisp_Object; |
491 | ||
bfe3e0a2 | 492 | #define LISP_INITIALLY_ZERO {0} |
f3fbd155 | 493 | |
4706125e PE |
494 | #undef CHECK_LISP_OBJECT_TYPE |
495 | enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = 1 }; | |
646b5f55 | 496 | #else /* CHECK_LISP_OBJECT_TYPE */ |
3cfe6dfd | 497 | |
646b5f55 | 498 | /* If a struct type is not wanted, define Lisp_Object as just a number. */ |
3cfe6dfd | 499 | |
c003141f | 500 | typedef EMACS_INT Lisp_Object; |
bfe3e0a2 | 501 | #define LISP_INITIALLY_ZERO 0 |
4706125e | 502 | enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = 0 }; |
646b5f55 | 503 | #endif /* CHECK_LISP_OBJECT_TYPE */ |
3cfe6dfd | 504 | |
84575e67 PE |
505 | /* Convert a Lisp_Object to the corresponding EMACS_INT and vice versa. |
506 | At the machine level, these operations are no-ops. */ | |
507 | LISP_MACRO_DEFUN (XLI, EMACS_INT, (Lisp_Object o), (o)) | |
508 | LISP_MACRO_DEFUN (XIL, Lisp_Object, (EMACS_INT i), (i)) | |
509 | ||
d311d28c | 510 | /* In the size word of a vector, this bit means the vector has been marked. */ |
846d69ac | 511 | |
79ea6c20 PE |
512 | static ptrdiff_t const ARRAY_MARK_FLAG |
513 | #define ARRAY_MARK_FLAG PTRDIFF_MIN | |
514 | = ARRAY_MARK_FLAG; | |
846d69ac | 515 | |
b5088f80 KH |
516 | /* In the size word of a struct Lisp_Vector, this bit means it's really |
517 | some other vector-like object. */ | |
f162bcc3 PE |
518 | static ptrdiff_t const PSEUDOVECTOR_FLAG |
519 | #define PSEUDOVECTOR_FLAG (PTRDIFF_MAX - PTRDIFF_MAX / 2) | |
520 | = PSEUDOVECTOR_FLAG; | |
b5088f80 | 521 | |
303a5c93 | 522 | /* In a pseudovector, the size field actually contains a word with one |
6aea7528 DA |
523 | PSEUDOVECTOR_FLAG bit set, and one of the following values extracted |
524 | with PVEC_TYPE_MASK to indicate the actual type. */ | |
99a3d506 RS |
525 | enum pvec_type |
526 | { | |
6aea7528 | 527 | PVEC_NORMAL_VECTOR, |
ee28be33 SM |
528 | PVEC_FREE, |
529 | PVEC_PROCESS, | |
530 | PVEC_FRAME, | |
531 | PVEC_WINDOW, | |
532 | PVEC_BOOL_VECTOR, | |
533 | PVEC_BUFFER, | |
534 | PVEC_HASH_TABLE, | |
535 | PVEC_TERMINAL, | |
536 | PVEC_WINDOW_CONFIGURATION, | |
537 | PVEC_SUBR, | |
538 | PVEC_OTHER, | |
914adc42 DA |
539 | /* These should be last, check internal_equal to see why. */ |
540 | PVEC_COMPILED, | |
541 | PVEC_CHAR_TABLE, | |
542 | PVEC_SUB_CHAR_TABLE, | |
543 | PVEC_FONT /* Should be last because it's used for range checking. */ | |
99a3d506 | 544 | }; |
b5088f80 | 545 | |
4706125e PE |
546 | /* DATA_SEG_BITS forces extra bits to be or'd in with any pointers |
547 | which were stored in a Lisp_Object. */ | |
548 | #ifndef DATA_SEG_BITS | |
549 | # define DATA_SEG_BITS 0 | |
550 | #endif | |
551 | enum { gdb_DATA_SEG_BITS = DATA_SEG_BITS }; | |
552 | #undef DATA_SEG_BITS | |
553 | ||
554 | enum More_Lisp_Bits | |
1781b9e9 | 555 | { |
4706125e PE |
556 | DATA_SEG_BITS = gdb_DATA_SEG_BITS, |
557 | ||
558 | /* For convenience, we also store the number of elements in these bits. | |
559 | Note that this size is not necessarily the memory-footprint size, but | |
560 | only the number of Lisp_Object fields (that need to be traced by GC). | |
561 | The distinction is used, e.g., by Lisp_Process, which places extra | |
562 | non-Lisp_Object fields at the end of the structure. */ | |
914adc42 | 563 | PSEUDOVECTOR_SIZE_BITS = 12, |
1781b9e9 | 564 | PSEUDOVECTOR_SIZE_MASK = (1 << PSEUDOVECTOR_SIZE_BITS) - 1, |
914adc42 DA |
565 | |
566 | /* To calculate the memory footprint of the pseudovector, it's useful | |
567 | to store the size of non-Lisp area in word_size units here. */ | |
568 | PSEUDOVECTOR_REST_BITS = 12, | |
04a2d0d3 | 569 | PSEUDOVECTOR_REST_MASK = (((1 << PSEUDOVECTOR_REST_BITS) - 1) |
914adc42 DA |
570 | << PSEUDOVECTOR_SIZE_BITS), |
571 | ||
572 | /* Used to extract pseudovector subtype information. */ | |
573 | PSEUDOVECTOR_AREA_BITS = PSEUDOVECTOR_SIZE_BITS + PSEUDOVECTOR_REST_BITS, | |
574 | PVEC_TYPE_MASK = 0x3f << PSEUDOVECTOR_AREA_BITS, | |
1781b9e9 | 575 | |
4706125e PE |
576 | /* Number of bits to put in each character in the internal representation |
577 | of bool vectors. This should not vary across implementations. */ | |
578 | BOOL_VECTOR_BITS_PER_CHAR = 8 | |
579 | }; | |
3cfe6dfd | 580 | \f |
84575e67 | 581 | /* These functions extract various sorts of values from a Lisp_Object. |
3cfe6dfd | 582 | For example, if tem is a Lisp_Object whose type is Lisp_Cons, |
99a3d506 | 583 | XCONS (tem) is the struct Lisp_Cons * pointing to the memory for that cons. */ |
3cfe6dfd | 584 | |
84575e67 PE |
585 | static EMACS_INT const VALMASK |
586 | #define VALMASK (USE_LSB_TAG ? - (1 << GCTYPEBITS) : VAL_MAX) | |
587 | = VALMASK; | |
6b61353c | 588 | |
84575e67 PE |
589 | /* Largest and smallest representable fixnum values. These are the C |
590 | values. They are macros for use in static initializers. */ | |
591 | #define MOST_POSITIVE_FIXNUM (EMACS_INT_MAX >> INTTYPEBITS) | |
592 | #define MOST_NEGATIVE_FIXNUM (-1 - MOST_POSITIVE_FIXNUM) | |
6b61353c | 593 | |
84575e67 PE |
594 | /* Extract the pointer hidden within A. */ |
595 | LISP_MACRO_DEFUN (XPNTR, void *, (Lisp_Object a), (a)) | |
6b61353c | 596 | |
84575e67 | 597 | #if USE_LSB_TAG |
6b61353c | 598 | |
84575e67 PE |
599 | LISP_MACRO_DEFUN (make_number, Lisp_Object, (EMACS_INT n), (n)) |
600 | LISP_MACRO_DEFUN (XINT, EMACS_INT, (Lisp_Object a), (a)) | |
601 | LISP_MACRO_DEFUN (XFASTINT, EMACS_INT, (Lisp_Object a), (a)) | |
602 | LISP_MACRO_DEFUN (XTYPE, enum Lisp_Type, (Lisp_Object a), (a)) | |
603 | LISP_MACRO_DEFUN (XUNTAG, void *, (Lisp_Object a, int type), (a, type)) | |
6b61353c | 604 | |
84575e67 | 605 | #else /* ! USE_LSB_TAG */ |
3cfe6dfd | 606 | |
84575e67 PE |
607 | /* Although compiled only if ! USE_LSB_TAG, the following functions |
608 | also work when USE_LSB_TAG; this is to aid future maintenance when | |
609 | the lisp_h_* macros are eventually removed. */ | |
3cfe6dfd | 610 | |
84575e67 PE |
611 | /* Make a Lisp integer representing the value of the low order |
612 | bits of N. */ | |
613 | LISP_INLINE Lisp_Object | |
614 | make_number (EMACS_INT n) | |
615 | { | |
616 | return XIL (USE_LSB_TAG ? n << INTTYPEBITS : n & INTMASK); | |
617 | } | |
3cfe6dfd | 618 | |
84575e67 PE |
619 | /* Extract A's value as a signed integer. */ |
620 | LISP_INLINE EMACS_INT | |
621 | XINT (Lisp_Object a) | |
622 | { | |
623 | EMACS_INT i = XLI (a); | |
624 | return (USE_LSB_TAG ? i : i << INTTYPEBITS) >> INTTYPEBITS; | |
625 | } | |
3cfe6dfd | 626 | |
84575e67 PE |
627 | /* Like XINT (A), but may be faster. A must be nonnegative. |
628 | If ! USE_LSB_TAG, this takes advantage of the fact that Lisp | |
629 | integers have zero-bits in their tags. */ | |
630 | LISP_INLINE EMACS_INT | |
631 | XFASTINT (Lisp_Object a) | |
632 | { | |
633 | EMACS_INT n = USE_LSB_TAG ? XINT (a) : XLI (a); | |
634 | eassert (0 <= n); | |
635 | return n; | |
636 | } | |
b7acde90 | 637 | |
84575e67 PE |
638 | /* Extract A's type. */ |
639 | LISP_INLINE enum Lisp_Type | |
640 | XTYPE (Lisp_Object a) | |
641 | { | |
642 | EMACS_UINT i = XLI (a); | |
643 | return USE_LSB_TAG ? i & ~VALMASK : i >> VALBITS; | |
644 | } | |
b7acde90 | 645 | |
84575e67 PE |
646 | /* Extract A's pointer value, assuming A's type is TYPE. */ |
647 | LISP_INLINE void * | |
648 | XUNTAG (Lisp_Object a, int type) | |
649 | { | |
650 | if (USE_LSB_TAG) | |
651 | { | |
652 | intptr_t i = XLI (a) - type; | |
653 | return (void *) i; | |
654 | } | |
655 | return XPNTR (a); | |
656 | } | |
3cfe6dfd | 657 | |
84575e67 | 658 | #endif /* ! USE_LSB_TAG */ |
61ddb1b9 | 659 | |
84575e67 PE |
660 | /* Extract A's value as an unsigned integer. */ |
661 | LISP_INLINE EMACS_UINT | |
662 | XUINT (Lisp_Object a) | |
663 | { | |
664 | EMACS_UINT i = XLI (a); | |
665 | return USE_LSB_TAG ? i >> INTTYPEBITS : i & INTMASK; | |
666 | } | |
b349d111 | 667 | |
84575e67 PE |
668 | /* Return A's (Lisp-integer sized) hash. Happens to be like XUINT |
669 | right now, but XUINT should only be applied to objects we know are | |
670 | integers. */ | |
671 | LISP_MACRO_DEFUN (XHASH, EMACS_INT, (Lisp_Object a), (a)) | |
b263a6b0 | 672 | |
84575e67 PE |
673 | /* Like make_number (N), but may be faster. N must be in nonnegative range. */ |
674 | LISP_INLINE Lisp_Object | |
675 | make_natnum (EMACS_INT n) | |
676 | { | |
677 | eassert (0 <= n && n <= MOST_POSITIVE_FIXNUM); | |
678 | return USE_LSB_TAG ? make_number (n) : XIL (n); | |
679 | } | |
b9466edb | 680 | |
84575e67 PE |
681 | /* Return true if X and Y are the same object. */ |
682 | LISP_MACRO_DEFUN (EQ, bool, (Lisp_Object x, Lisp_Object y), (x, y)) | |
0de4bb68 | 683 | |
987c9327 AS |
684 | /* Value is non-zero if I doesn't fit into a Lisp fixnum. It is |
685 | written this way so that it also works if I is of unsigned | |
2e6578fb | 686 | type or if I is a NaN. */ |
dc8e8b07 GM |
687 | |
688 | #define FIXNUM_OVERFLOW_P(i) \ | |
7216e43b | 689 | (! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM)) |
dc8e8b07 | 690 | |
f162bcc3 | 691 | LISP_INLINE ptrdiff_t |
d311d28c PE |
692 | clip_to_bounds (ptrdiff_t lower, EMACS_INT num, ptrdiff_t upper) |
693 | { | |
694 | return num < lower ? lower : num <= upper ? num : upper; | |
695 | } | |
84575e67 PE |
696 | \f |
697 | /* Forward declarations. */ | |
698 | ||
699 | /* Defined in this file. */ | |
700 | union Lisp_Fwd; | |
701 | LISP_INLINE bool BOOL_VECTOR_P (Lisp_Object); | |
702 | LISP_INLINE bool BUFFER_OBJFWDP (union Lisp_Fwd *); | |
703 | LISP_INLINE bool BUFFERP (Lisp_Object); | |
704 | LISP_INLINE bool CHAR_TABLE_P (Lisp_Object); | |
705 | LISP_INLINE Lisp_Object CHAR_TABLE_REF_ASCII (Lisp_Object, ptrdiff_t); | |
706 | LISP_INLINE bool (CONSP) (Lisp_Object); | |
707 | LISP_INLINE bool (FLOATP) (Lisp_Object); | |
708 | LISP_INLINE bool functionp (Lisp_Object); | |
709 | LISP_INLINE bool (INTEGERP) (Lisp_Object); | |
710 | LISP_INLINE bool (MARKERP) (Lisp_Object); | |
711 | LISP_INLINE bool (MISCP) (Lisp_Object); | |
712 | LISP_INLINE bool (NILP) (Lisp_Object); | |
713 | LISP_INLINE bool OVERLAYP (Lisp_Object); | |
714 | LISP_INLINE bool PROCESSP (Lisp_Object); | |
715 | LISP_INLINE bool PSEUDOVECTORP (Lisp_Object, int); | |
716 | LISP_INLINE bool SAVE_VALUEP (Lisp_Object); | |
717 | LISP_INLINE void set_sub_char_table_contents (Lisp_Object, ptrdiff_t, | |
718 | Lisp_Object); | |
719 | LISP_INLINE bool STRINGP (Lisp_Object); | |
720 | LISP_INLINE bool SUB_CHAR_TABLE_P (Lisp_Object); | |
721 | LISP_INLINE bool SUBRP (Lisp_Object); | |
722 | LISP_INLINE bool (SYMBOLP) (Lisp_Object); | |
723 | LISP_INLINE bool (VECTORLIKEP) (Lisp_Object); | |
724 | LISP_INLINE bool WINDOWP (Lisp_Object); | |
725 | LISP_INLINE struct Lisp_Save_Value *XSAVE_VALUE (Lisp_Object); | |
d311d28c | 726 | |
84575e67 PE |
727 | /* Defined in chartab.c. */ |
728 | extern Lisp_Object char_table_ref (Lisp_Object, int); | |
729 | extern void char_table_set (Lisp_Object, int, Lisp_Object); | |
730 | extern int char_table_translate (Lisp_Object, int); | |
731 | ||
732 | /* Defined in data.c. */ | |
733 | extern Lisp_Object Qarrayp, Qbufferp, Qbuffer_or_string_p, Qchar_table_p; | |
734 | extern Lisp_Object Qconsp, Qfloatp, Qintegerp, Qlambda, Qlistp, Qmarkerp, Qnil; | |
735 | extern Lisp_Object Qnumberp, Qstringp, Qsymbolp, Qvectorp; | |
736 | extern Lisp_Object Qvector_or_char_table_p, Qwholenump; | |
8f3a2c26 | 737 | extern Lisp_Object Qwindow; |
84575e67 PE |
738 | extern Lisp_Object Ffboundp (Lisp_Object); |
739 | extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object); | |
740 | ||
741 | /* Defined in emacs.c. */ | |
742 | extern bool initialized; | |
743 | ||
744 | /* Defined in eval.c. */ | |
745 | extern Lisp_Object Qautoload; | |
746 | ||
747 | /* Defined in floatfns.c. */ | |
748 | extern double extract_float (Lisp_Object); | |
749 | ||
750 | /* Defined in process.c. */ | |
751 | extern Lisp_Object Qprocessp; | |
752 | ||
753 | /* Defined in window.c. */ | |
754 | extern Lisp_Object Qwindowp; | |
755 | ||
756 | /* Defined in xdisp.c. */ | |
757 | extern Lisp_Object Qimage; | |
7b1123d8 | 758 | \f |
84575e67 | 759 | |
99a3d506 | 760 | /* Extract a value or address from a Lisp_Object. */ |
3cfe6dfd | 761 | |
84575e67 | 762 | LISP_MACRO_DEFUN (XCONS, struct Lisp_Cons *, (Lisp_Object a), (a)) |
7c06ac2b | 763 | |
84575e67 PE |
764 | LISP_INLINE struct Lisp_Vector * |
765 | XVECTOR (Lisp_Object a) | |
766 | { | |
767 | eassert (VECTORLIKEP (a)); | |
768 | return XUNTAG (a, Lisp_Vectorlike); | |
769 | } | |
c9f6631c | 770 | |
84575e67 PE |
771 | LISP_INLINE struct Lisp_String * |
772 | XSTRING (Lisp_Object a) | |
773 | { | |
774 | eassert (STRINGP (a)); | |
775 | return XUNTAG (a, Lisp_String); | |
776 | } | |
ce5b453a | 777 | |
84575e67 | 778 | LISP_MACRO_DEFUN (XSYMBOL, struct Lisp_Symbol *, (Lisp_Object a), (a)) |
ce5b453a | 779 | |
84575e67 PE |
780 | LISP_INLINE struct Lisp_Float * |
781 | XFLOAT (Lisp_Object a) | |
782 | { | |
783 | eassert (FLOATP (a)); | |
784 | return XUNTAG (a, Lisp_Float); | |
785 | } | |
3cfe6dfd | 786 | |
7c06ac2b | 787 | /* Pseudovector types. */ |
84575e67 PE |
788 | |
789 | LISP_INLINE struct Lisp_Process * | |
790 | XPROCESS (Lisp_Object a) | |
791 | { | |
792 | eassert (PROCESSP (a)); | |
793 | return XUNTAG (a, Lisp_Vectorlike); | |
794 | } | |
795 | ||
796 | LISP_INLINE struct window * | |
797 | XWINDOW (Lisp_Object a) | |
798 | { | |
799 | eassert (WINDOWP (a)); | |
800 | return XUNTAG (a, Lisp_Vectorlike); | |
801 | } | |
802 | ||
803 | LISP_INLINE struct terminal * | |
804 | XTERMINAL (Lisp_Object a) | |
805 | { | |
806 | return XUNTAG (a, Lisp_Vectorlike); | |
807 | } | |
808 | ||
809 | LISP_INLINE struct Lisp_Subr * | |
810 | XSUBR (Lisp_Object a) | |
811 | { | |
812 | eassert (SUBRP (a)); | |
813 | return XUNTAG (a, Lisp_Vectorlike); | |
814 | } | |
815 | ||
816 | LISP_INLINE struct buffer * | |
817 | XBUFFER (Lisp_Object a) | |
818 | { | |
819 | eassert (BUFFERP (a)); | |
820 | return XUNTAG (a, Lisp_Vectorlike); | |
821 | } | |
822 | ||
823 | LISP_INLINE struct Lisp_Char_Table * | |
824 | XCHAR_TABLE (Lisp_Object a) | |
825 | { | |
826 | eassert (CHAR_TABLE_P (a)); | |
827 | return XUNTAG (a, Lisp_Vectorlike); | |
828 | } | |
829 | ||
830 | LISP_INLINE struct Lisp_Sub_Char_Table * | |
831 | XSUB_CHAR_TABLE (Lisp_Object a) | |
832 | { | |
833 | eassert (SUB_CHAR_TABLE_P (a)); | |
834 | return XUNTAG (a, Lisp_Vectorlike); | |
835 | } | |
836 | ||
837 | LISP_INLINE struct Lisp_Bool_Vector * | |
838 | XBOOL_VECTOR (Lisp_Object a) | |
839 | { | |
840 | eassert (BOOL_VECTOR_P (a)); | |
841 | return XUNTAG (a, Lisp_Vectorlike); | |
842 | } | |
99a3d506 | 843 | |
99a3d506 | 844 | /* Construct a Lisp_Object from a value or address. */ |
7c06ac2b | 845 | |
84575e67 PE |
846 | LISP_INLINE Lisp_Object |
847 | make_lisp_ptr (void *ptr, enum Lisp_Type type) | |
848 | { | |
849 | EMACS_UINT utype = type; | |
850 | EMACS_UINT typebits = USE_LSB_TAG ? type : utype << VALBITS; | |
851 | Lisp_Object a = XIL (typebits | (uintptr_t) ptr); | |
852 | eassert (XTYPE (a) == type && XUNTAG (a, type) == ptr); | |
853 | return a; | |
854 | } | |
855 | ||
856 | LISP_INLINE Lisp_Object | |
857 | make_lisp_proc (struct Lisp_Process *p) | |
858 | { | |
859 | return make_lisp_ptr (p, Lisp_Vectorlike); | |
860 | } | |
861 | ||
ff55dfe8 | 862 | #define XSETINT(a, b) ((a) = make_number (b)) |
84575e67 | 863 | #define XSETFASTINT(a, b) ((a) = make_natnum (b)) |
ff55dfe8 PE |
864 | #define XSETCONS(a, b) ((a) = make_lisp_ptr (b, Lisp_Cons)) |
865 | #define XSETVECTOR(a, b) ((a) = make_lisp_ptr (b, Lisp_Vectorlike)) | |
866 | #define XSETSTRING(a, b) ((a) = make_lisp_ptr (b, Lisp_String)) | |
867 | #define XSETSYMBOL(a, b) ((a) = make_lisp_ptr (b, Lisp_Symbol)) | |
868 | #define XSETFLOAT(a, b) ((a) = make_lisp_ptr (b, Lisp_Float)) | |
7c06ac2b RS |
869 | |
870 | /* Misc types. */ | |
c9f6631c | 871 | |
ff55dfe8 | 872 | #define XSETMISC(a, b) ((a) = make_lisp_ptr (b, Lisp_Misc)) |
a7aa28f6 | 873 | #define XSETMARKER(a, b) (XSETMISC (a, b), XMISCTYPE (a) = Lisp_Misc_Marker) |
7c06ac2b RS |
874 | |
875 | /* Pseudovector types. */ | |
c9f6631c | 876 | |
914adc42 DA |
877 | #define XSETPVECTYPE(v, code) \ |
878 | ((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS)) | |
879 | #define XSETPVECTYPESIZE(v, code, lispsize, restsize) \ | |
ee28be33 | 880 | ((v)->header.size = (PSEUDOVECTOR_FLAG \ |
914adc42 DA |
881 | | ((code) << PSEUDOVECTOR_AREA_BITS) \ |
882 | | ((restsize) << PSEUDOVECTOR_SIZE_BITS) \ | |
883 | | (lispsize))) | |
aa0b0087 PE |
884 | |
885 | /* The cast to struct vectorlike_header * avoids aliasing issues. */ | |
7c06ac2b | 886 | #define XSETPSEUDOVECTOR(a, b, code) \ |
7555c33f SM |
887 | XSETTYPED_PSEUDOVECTOR (a, b, \ |
888 | (((struct vectorlike_header *) \ | |
889 | XUNTAG (a, Lisp_Vectorlike)) \ | |
890 | ->size), \ | |
891 | code) | |
eab3844f | 892 | #define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \ |
beb9f745 | 893 | (XSETVECTOR (a, b), \ |
eab3844f | 894 | eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \ |
914adc42 | 895 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS)))) |
aa0b0087 | 896 | |
7c06ac2b RS |
897 | #define XSETWINDOW_CONFIGURATION(a, b) \ |
898 | (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION)) | |
899 | #define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS)) | |
900 | #define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW)) | |
49e49fb5 | 901 | #define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL)) |
914adc42 | 902 | #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR)) |
7c06ac2b | 903 | #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED)) |
99a3d506 | 904 | #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER)) |
608ff985 RS |
905 | #define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE)) |
906 | #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR)) | |
1842abb2 | 907 | #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE)) |
c9f6631c | 908 | |
c8a39089 KS |
909 | /* Type checking. */ |
910 | ||
84575e67 PE |
911 | LISP_MACRO_DEFUN_VOID (CHECK_TYPE, (int ok, Lisp_Object Qxxxp, Lisp_Object x), |
912 | (ok, Qxxxp, x)) | |
c8a39089 | 913 | |
c644523b | 914 | /* Deprecated and will be removed soon. */ |
e34f7f79 DA |
915 | |
916 | #define INTERNAL_FIELD(field) field ## _ | |
c8a39089 | 917 | |
5f6bf5fe | 918 | /* See the macros in intervals.h. */ |
e221eae3 JA |
919 | |
920 | typedef struct interval *INTERVAL; | |
921 | ||
3cfe6dfd JB |
922 | struct Lisp_Cons |
923 | { | |
d8a05828 | 924 | /* Car of this cons cell. */ |
c644523b | 925 | Lisp_Object car; |
d8a05828 | 926 | |
3a623fee AS |
927 | union |
928 | { | |
d8a05828 | 929 | /* Cdr of this cons cell. */ |
c644523b | 930 | Lisp_Object cdr; |
d8a05828 DA |
931 | |
932 | /* Used to chain conses on a free list. */ | |
3a623fee AS |
933 | struct Lisp_Cons *chain; |
934 | } u; | |
3cfe6dfd JB |
935 | }; |
936 | ||
b7acde90 | 937 | /* Take the car or cdr of something known to be a cons cell. */ |
84575e67 | 938 | /* The _addr functions shouldn't be used outside of the minimal set |
f3fbd155 KR |
939 | of code that has to know what a cons cell looks like. Other code not |
940 | part of the basic lisp implementation should assume that the car and cdr | |
84575e67 | 941 | fields are not accessible. (What if we want to switch to |
f3fbd155 KR |
942 | a copying collector someday? Cached cons cell field addresses may be |
943 | invalidated at arbitrary points.) */ | |
84575e67 PE |
944 | LISP_INLINE Lisp_Object * |
945 | xcar_addr (Lisp_Object c) | |
946 | { | |
947 | return &XCONS (c)->car; | |
948 | } | |
949 | LISP_INLINE Lisp_Object * | |
950 | xcdr_addr (Lisp_Object c) | |
951 | { | |
952 | return &XCONS (c)->u.cdr; | |
953 | } | |
b7acde90 | 954 | |
f3fbd155 | 955 | /* Use these from normal code. */ |
84575e67 PE |
956 | LISP_MACRO_DEFUN (XCAR, Lisp_Object, (Lisp_Object c), (c)) |
957 | LISP_MACRO_DEFUN (XCDR, Lisp_Object, (Lisp_Object c), (c)) | |
f3fbd155 KR |
958 | |
959 | /* Use these to set the fields of a cons cell. | |
960 | ||
961 | Note that both arguments may refer to the same object, so 'n' | |
84575e67 PE |
962 | should not be read after 'c' is first modified. */ |
963 | LISP_INLINE void | |
964 | XSETCAR (Lisp_Object c, Lisp_Object n) | |
965 | { | |
966 | *xcar_addr (c) = n; | |
967 | } | |
968 | LISP_INLINE void | |
969 | XSETCDR (Lisp_Object c, Lisp_Object n) | |
970 | { | |
971 | *xcdr_addr (c) = n; | |
972 | } | |
f3fbd155 | 973 | |
b7acde90 | 974 | /* Take the car or cdr of something whose type is not known. */ |
84575e67 PE |
975 | LISP_INLINE Lisp_Object |
976 | CAR (Lisp_Object c) | |
977 | { | |
978 | return (CONSP (c) ? XCAR (c) | |
979 | : NILP (c) ? Qnil | |
980 | : wrong_type_argument (Qlistp, c)); | |
981 | } | |
982 | LISP_INLINE Lisp_Object | |
983 | CDR (Lisp_Object c) | |
984 | { | |
985 | return (CONSP (c) ? XCDR (c) | |
986 | : NILP (c) ? Qnil | |
987 | : wrong_type_argument (Qlistp, c)); | |
988 | } | |
b7acde90 | 989 | |
c8a39089 | 990 | /* Take the car or cdr of something whose type is not known. */ |
84575e67 PE |
991 | LISP_INLINE Lisp_Object |
992 | CAR_SAFE (Lisp_Object c) | |
993 | { | |
994 | return CONSP (c) ? XCAR (c) : Qnil; | |
995 | } | |
996 | LISP_INLINE Lisp_Object | |
997 | CDR_SAFE (Lisp_Object c) | |
998 | { | |
999 | return CONSP (c) ? XCDR (c) : Qnil; | |
1000 | } | |
35f464a7 | 1001 | |
84575e67 | 1002 | /* In a string or vector, the sign bit of the `size' is the gc mark bit. */ |
35f464a7 | 1003 | |
84575e67 PE |
1004 | struct Lisp_String |
1005 | { | |
1006 | ptrdiff_t size; | |
1007 | ptrdiff_t size_byte; | |
1008 | INTERVAL intervals; /* Text properties in this string. */ | |
1009 | unsigned char *data; | |
1010 | }; | |
d8fc7ce4 | 1011 | |
84575e67 PE |
1012 | /* True if STR is a multibyte string. */ |
1013 | LISP_INLINE bool | |
1014 | STRING_MULTIBYTE (Lisp_Object str) | |
1015 | { | |
1016 | return 0 <= XSTRING (str)->size_byte; | |
1017 | } | |
35f464a7 | 1018 | |
c9d624c6 PE |
1019 | /* An upper bound on the number of bytes in a Lisp string, not |
1020 | counting the terminating null. This a tight enough bound to | |
1021 | prevent integer overflow errors that would otherwise occur during | |
1022 | string size calculations. A string cannot contain more bytes than | |
1023 | a fixnum can represent, nor can it be so long that C pointer | |
1024 | arithmetic stops working on the string plus its terminating null. | |
1025 | Although the actual size limit (see STRING_BYTES_MAX in alloc.c) | |
1026 | may be a bit smaller than STRING_BYTES_BOUND, calculating it here | |
1027 | would expose alloc.c internal details that we'd rather keep | |
03a660a6 PE |
1028 | private. |
1029 | ||
7b1123d8 PE |
1030 | This is a macro for use in static initializers. The cast to |
1031 | ptrdiff_t ensures that the macro is signed. */ | |
c9d624c6 | 1032 | #define STRING_BYTES_BOUND \ |
88fb40b4 | 1033 | ((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1)) |
d1f3d2af | 1034 | |
491c2516 | 1035 | /* Mark STR as a unibyte string. */ |
2c668b9a JB |
1036 | #define STRING_SET_UNIBYTE(STR) \ |
1037 | do { if (EQ (STR, empty_multibyte_string)) \ | |
1038 | (STR) = empty_unibyte_string; \ | |
1039 | else XSTRING (STR)->size_byte = -1; } while (0) | |
491c2516 | 1040 | |
94ef4d69 KH |
1041 | /* Mark STR as a multibyte string. Assure that STR contains only |
1042 | ASCII characters in advance. */ | |
1043 | #define STRING_SET_MULTIBYTE(STR) \ | |
1044 | do { if (EQ (STR, empty_unibyte_string)) \ | |
1045 | (STR) = empty_multibyte_string; \ | |
1046 | else XSTRING (STR)->size_byte = XSTRING (STR)->size; } while (0) | |
1047 | ||
84575e67 | 1048 | /* Convenience functions for dealing with Lisp strings. */ |
3cfe6dfd | 1049 | |
84575e67 PE |
1050 | LISP_INLINE unsigned char * |
1051 | SDATA (Lisp_Object string) | |
1052 | { | |
1053 | return XSTRING (string)->data; | |
1054 | } | |
1055 | LISP_INLINE char * | |
1056 | SSDATA (Lisp_Object string) | |
1057 | { | |
1058 | /* Avoid "differ in sign" warnings. */ | |
1059 | return (char *) SDATA (string); | |
1060 | } | |
1061 | LISP_INLINE unsigned char | |
1062 | SREF (Lisp_Object string, ptrdiff_t index) | |
1063 | { | |
1064 | return SDATA (string)[index]; | |
1065 | } | |
1066 | LISP_INLINE void | |
1067 | SSET (Lisp_Object string, ptrdiff_t index, unsigned char new) | |
1068 | { | |
1069 | SDATA (string)[index] = new; | |
1070 | } | |
1071 | LISP_INLINE ptrdiff_t | |
1072 | SCHARS (Lisp_Object string) | |
1073 | { | |
1074 | return XSTRING (string)->size; | |
1075 | } | |
fbe9e0b9 PE |
1076 | |
1077 | #ifdef GC_CHECK_STRING_BYTES | |
1078 | extern ptrdiff_t string_bytes (struct Lisp_String *); | |
1079 | #endif | |
84575e67 PE |
1080 | LISP_INLINE ptrdiff_t |
1081 | STRING_BYTES (struct Lisp_String *s) | |
1082 | { | |
1083 | #ifdef GC_CHECK_STRING_BYTES | |
84575e67 PE |
1084 | return string_bytes (s); |
1085 | #else | |
1086 | return s->size_byte < 0 ? s->size : s->size_byte; | |
1087 | #endif | |
1088 | } | |
fbe9e0b9 | 1089 | |
84575e67 PE |
1090 | LISP_INLINE ptrdiff_t |
1091 | SBYTES (Lisp_Object string) | |
1092 | { | |
1093 | return STRING_BYTES (XSTRING (string)); | |
1094 | } | |
1095 | LISP_INLINE void | |
1096 | STRING_SET_CHARS (Lisp_Object string, ptrdiff_t newsize) | |
1097 | { | |
1098 | XSTRING (string)->size = newsize; | |
1099 | } | |
1100 | LISP_INLINE void | |
1101 | STRING_COPYIN (Lisp_Object string, ptrdiff_t index, char const *new, | |
1102 | ptrdiff_t count) | |
1103 | { | |
1104 | memcpy (SDATA (string) + index, new, count); | |
1105 | } | |
3cfe6dfd | 1106 | |
aa0b0087 | 1107 | /* Header of vector-like objects. This documents the layout constraints on |
914adc42 | 1108 | vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents |
84575e67 PE |
1109 | compilers from being fooled by Emacs's type punning: XSETPSEUDOVECTOR |
1110 | and PSEUDOVECTORP cast their pointers to struct vectorlike_header *, | |
aa0b0087 PE |
1111 | because when two such pointers potentially alias, a compiler won't |
1112 | incorrectly reorder loads and stores to their size fields. See | |
1113 | <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8546>. */ | |
b102ceb1 | 1114 | struct vectorlike_header |
3cfe6dfd | 1115 | { |
914adc42 | 1116 | /* The only field contains various pieces of information: |
ee28be33 SM |
1117 | - The MSB (ARRAY_MARK_FLAG) holds the gcmarkbit. |
1118 | - The next bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain | |
1119 | vector (0) or a pseudovector (1). | |
1120 | - If PSEUDOVECTOR_FLAG is 0, the rest holds the size (number | |
1121 | of slots) of the vector. | |
914adc42 DA |
1122 | - If PSEUDOVECTOR_FLAG is 1, the rest is subdivided into three fields: |
1123 | - a) pseudovector subtype held in PVEC_TYPE_MASK field; | |
1124 | - b) number of Lisp_Objects slots at the beginning of the object | |
1125 | held in PSEUDOVECTOR_SIZE_MASK field. These objects are always | |
1126 | traced by the GC; | |
1127 | - c) size of the rest fields held in PSEUDOVECTOR_REST_MASK and | |
1128 | measured in word_size units. Rest fields may also include | |
1129 | Lisp_Objects, but these objects usually needs some special treatment | |
1130 | during GC. | |
1131 | There are some exceptions. For PVEC_FREE, b) is always zero. For | |
1132 | PVEC_BOOL_VECTOR and PVEC_SUBR, both b) and c) are always zero. | |
1133 | Current layout limits the pseudovectors to 63 PVEC_xxx subtypes, | |
1134 | 4095 Lisp_Objects in GC-ed area and 4095 word-sized other slots. */ | |
d311d28c | 1135 | ptrdiff_t size; |
eab3844f PE |
1136 | }; |
1137 | ||
663e2b3f DA |
1138 | /* Regular vector is just a header plus array of Lisp_Objects. */ |
1139 | ||
eab3844f PE |
1140 | struct Lisp_Vector |
1141 | { | |
b102ceb1 | 1142 | struct vectorlike_header header; |
fbe9e0b9 | 1143 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
3cfe6dfd JB |
1144 | }; |
1145 | ||
663e2b3f DA |
1146 | /* A boolvector is a kind of vectorlike, with contents are like a string. */ |
1147 | ||
1148 | struct Lisp_Bool_Vector | |
1149 | { | |
1150 | /* HEADER.SIZE is the vector's size field. It doesn't have the real size, | |
1151 | just the subtype information. */ | |
1152 | struct vectorlike_header header; | |
1153 | /* This is the size in bits. */ | |
1154 | EMACS_INT size; | |
1155 | /* This contains the actual bits, packed into bytes. */ | |
fbe9e0b9 | 1156 | unsigned char data[FLEXIBLE_ARRAY_MEMBER]; |
663e2b3f DA |
1157 | }; |
1158 | ||
1159 | /* Some handy constants for calculating sizes | |
1160 | and offsets, mostly of vectorlike objects. */ | |
1161 | ||
1162 | enum | |
1163 | { | |
1164 | header_size = offsetof (struct Lisp_Vector, contents), | |
1165 | bool_header_size = offsetof (struct Lisp_Bool_Vector, data), | |
1166 | word_size = sizeof (Lisp_Object) | |
1167 | }; | |
1168 | ||
84575e67 PE |
1169 | /* Conveniences for dealing with Lisp arrays. */ |
1170 | ||
1171 | LISP_INLINE Lisp_Object | |
1172 | AREF (Lisp_Object array, ptrdiff_t idx) | |
1173 | { | |
1174 | return XVECTOR (array)->contents[idx]; | |
1175 | } | |
1176 | ||
1177 | LISP_INLINE Lisp_Object * | |
1178 | aref_addr (Lisp_Object array, ptrdiff_t idx) | |
1179 | { | |
1180 | return & XVECTOR (array)->contents[idx]; | |
1181 | } | |
1182 | ||
1183 | LISP_INLINE ptrdiff_t | |
1184 | ASIZE (Lisp_Object array) | |
1185 | { | |
1186 | return XVECTOR (array)->header.size; | |
1187 | } | |
1188 | ||
1189 | LISP_INLINE void | |
1190 | ASET (Lisp_Object array, ptrdiff_t idx, Lisp_Object val) | |
1191 | { | |
1192 | eassert (0 <= idx && idx < ASIZE (array)); | |
1193 | XVECTOR (array)->contents[idx] = val; | |
1194 | } | |
1195 | ||
1196 | LISP_INLINE void | |
1197 | gc_aset (Lisp_Object array, ptrdiff_t idx, Lisp_Object val) | |
1198 | { | |
1199 | /* Like ASET, but also can be used in the garbage collector: | |
1200 | sweep_weak_table calls set_hash_key etc. while the table is marked. */ | |
1201 | eassert (0 <= idx && idx < (ASIZE (array) & ~ARRAY_MARK_FLAG)); | |
1202 | XVECTOR (array)->contents[idx] = val; | |
1203 | } | |
1204 | ||
94225242 | 1205 | /* If a struct is made to look like a vector, this macro returns the length |
4115d3f7 | 1206 | of the shortest vector that would hold that struct. */ |
663e2b3f DA |
1207 | |
1208 | #define VECSIZE(type) \ | |
1209 | ((sizeof (type) - header_size + word_size - 1) / word_size) | |
94225242 | 1210 | |
d0ebe33a SM |
1211 | /* Like VECSIZE, but used when the pseudo-vector has non-Lisp_Object fields |
1212 | at the end and we need to compute the number of Lisp_Object fields (the | |
1213 | ones that the GC needs to trace). */ | |
663e2b3f DA |
1214 | |
1215 | #define PSEUDOVECSIZE(type, nonlispfield) \ | |
1216 | ((offsetof (type, nonlispfield) - header_size) / word_size) | |
d0ebe33a | 1217 | |
ea204efb PE |
1218 | /* Compute A OP B, using the unsigned comparison operator OP. A and B |
1219 | should be integer expressions. This is not the same as | |
53964682 | 1220 | mathematical comparison; for example, UNSIGNED_CMP (0, <, -1) |
ea204efb PE |
1221 | returns 1. For efficiency, prefer plain unsigned comparison if A |
1222 | and B's sizes both fit (after integer promotion). */ | |
1223 | #define UNSIGNED_CMP(a, op, b) \ | |
1224 | (max (sizeof ((a) + 0), sizeof ((b) + 0)) <= sizeof (unsigned) \ | |
1225 | ? ((a) + (unsigned) 0) op ((b) + (unsigned) 0) \ | |
1226 | : ((a) + (uintmax_t) 0) op ((b) + (uintmax_t) 0)) | |
1227 | ||
15206ed9 | 1228 | /* Nonzero iff C is an ASCII character. */ |
ea204efb | 1229 | #define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80) |
15206ed9 | 1230 | |
84575e67 PE |
1231 | /* A char-table is a kind of vectorlike, with contents are like a |
1232 | vector but with a few other slots. For some purposes, it makes | |
1233 | sense to handle a char-table with type struct Lisp_Vector. An | |
1234 | element of a char table can be any Lisp objects, but if it is a sub | |
1235 | char-table, we treat it a table that contains information of a | |
1236 | specific range of characters. A sub char-table has the same | |
1237 | structure as a vector. A sub char table appears only in an element | |
1238 | of a char-table, and there's no way to access it directly from | |
1239 | Emacs Lisp program. */ | |
1842abb2 | 1240 | |
03a660a6 PE |
1241 | enum CHARTAB_SIZE_BITS |
1242 | { | |
1243 | CHARTAB_SIZE_BITS_0 = 6, | |
1244 | CHARTAB_SIZE_BITS_1 = 4, | |
1245 | CHARTAB_SIZE_BITS_2 = 5, | |
1246 | CHARTAB_SIZE_BITS_3 = 7 | |
1247 | }; | |
1842abb2 KH |
1248 | |
1249 | extern const int chartab_size[4]; | |
1250 | ||
608ff985 RS |
1251 | struct Lisp_Char_Table |
1252 | { | |
eab3844f | 1253 | /* HEADER.SIZE is the vector's size field, which also holds the |
608ff985 | 1254 | pseudovector type information. It holds the size, too. |
c73bd236 MB |
1255 | The size counts the defalt, parent, purpose, ascii, |
1256 | contents, and extras slots. */ | |
b102ceb1 | 1257 | struct vectorlike_header header; |
1842abb2 | 1258 | |
608ff985 RS |
1259 | /* This holds a default value, |
1260 | which is used whenever the value for a specific character is nil. */ | |
1261 | Lisp_Object defalt; | |
ea724a01 | 1262 | |
8f924df7 KH |
1263 | /* This points to another char table, which we inherit from when the |
1264 | value for a specific character is nil. The `defalt' slot takes | |
1265 | precedence over this. */ | |
608ff985 | 1266 | Lisp_Object parent; |
1842abb2 | 1267 | |
8f924df7 KH |
1268 | /* This is a symbol which says what kind of use this char-table is |
1269 | meant for. */ | |
7f73dc9d | 1270 | Lisp_Object purpose; |
1842abb2 | 1271 | |
8f924df7 KH |
1272 | /* The bottom sub char-table for characters of the range 0..127. It |
1273 | is nil if none of ASCII character has a specific value. */ | |
1274 | Lisp_Object ascii; | |
1842abb2 | 1275 | |
8f924df7 | 1276 | Lisp_Object contents[(1 << CHARTAB_SIZE_BITS_0)]; |
1842abb2 | 1277 | |
8f924df7 | 1278 | /* These hold additional data. It is a vector. */ |
fbe9e0b9 | 1279 | Lisp_Object extras[FLEXIBLE_ARRAY_MEMBER]; |
608ff985 RS |
1280 | }; |
1281 | ||
1842abb2 | 1282 | struct Lisp_Sub_Char_Table |
8f924df7 | 1283 | { |
eab3844f | 1284 | /* HEADER.SIZE is the vector's size field, which also holds the |
8f924df7 | 1285 | pseudovector type information. It holds the size, too. */ |
b102ceb1 | 1286 | struct vectorlike_header header; |
1842abb2 | 1287 | |
8f924df7 | 1288 | /* Depth of this sub char-table. It should be 1, 2, or 3. A sub |
78edd3b7 | 1289 | char-table of depth 1 contains 16 elements, and each element |
8f924df7 KH |
1290 | covers 4096 (128*32) characters. A sub char-table of depth 2 |
1291 | contains 32 elements, and each element covers 128 characters. A | |
1292 | sub char-table of depth 3 contains 128 elements, and each element | |
1293 | is for one character. */ | |
1294 | Lisp_Object depth; | |
1842abb2 | 1295 | |
8f924df7 KH |
1296 | /* Minimum character covered by the sub char-table. */ |
1297 | Lisp_Object min_char; | |
1842abb2 | 1298 | |
34dabdb7 | 1299 | /* Use set_sub_char_table_contents to set this. */ |
fbe9e0b9 | 1300 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
8f924df7 | 1301 | }; |
608ff985 | 1302 | |
84575e67 PE |
1303 | LISP_INLINE Lisp_Object |
1304 | CHAR_TABLE_REF_ASCII (Lisp_Object ct, ptrdiff_t idx) | |
1305 | { | |
1306 | struct Lisp_Char_Table *tbl = NULL; | |
1307 | Lisp_Object val; | |
1308 | do | |
1309 | { | |
1310 | tbl = tbl ? XCHAR_TABLE (tbl->parent) : XCHAR_TABLE (ct); | |
1311 | val = (! SUB_CHAR_TABLE_P (tbl->ascii) ? tbl->ascii | |
1312 | : XSUB_CHAR_TABLE (tbl->ascii)->contents[idx]); | |
1313 | if (NILP (val)) | |
1314 | val = tbl->defalt; | |
1315 | } | |
1316 | while (NILP (val) && ! NILP (tbl->parent)); | |
1317 | ||
1318 | return val; | |
1319 | } | |
1320 | ||
1321 | /* Almost equivalent to Faref (CT, IDX) with optimization for ASCII | |
1322 | characters. Do not check validity of CT. */ | |
1323 | LISP_INLINE Lisp_Object | |
1324 | CHAR_TABLE_REF (Lisp_Object ct, int idx) | |
1325 | { | |
1326 | return (ASCII_CHAR_P (idx) | |
1327 | ? CHAR_TABLE_REF_ASCII (ct, idx) | |
1328 | : char_table_ref (ct, idx)); | |
1329 | } | |
1330 | ||
1331 | /* Equivalent to Faset (CT, IDX, VAL) with optimization for ASCII and | |
1332 | 8-bit European characters. Do not check validity of CT. */ | |
1333 | LISP_INLINE void | |
1334 | CHAR_TABLE_SET (Lisp_Object ct, int idx, Lisp_Object val) | |
1335 | { | |
1336 | if (ASCII_CHAR_P (idx) && SUB_CHAR_TABLE_P (XCHAR_TABLE (ct)->ascii)) | |
1337 | set_sub_char_table_contents (XCHAR_TABLE (ct)->ascii, idx, val); | |
1338 | else | |
1339 | char_table_set (ct, idx, val); | |
1340 | } | |
1341 | ||
7c06ac2b RS |
1342 | /* This structure describes a built-in function. |
1343 | It is generated by the DEFUN macro only. | |
914adc42 | 1344 | defsubr makes it into a Lisp object. */ |
e98227af | 1345 | |
3cfe6dfd JB |
1346 | struct Lisp_Subr |
1347 | { | |
914adc42 | 1348 | struct vectorlike_header header; |
c0f2f16b DN |
1349 | union { |
1350 | Lisp_Object (*a0) (void); | |
1351 | Lisp_Object (*a1) (Lisp_Object); | |
1352 | Lisp_Object (*a2) (Lisp_Object, Lisp_Object); | |
1353 | Lisp_Object (*a3) (Lisp_Object, Lisp_Object, Lisp_Object); | |
1354 | Lisp_Object (*a4) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
1355 | Lisp_Object (*a5) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
1356 | Lisp_Object (*a6) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
1357 | Lisp_Object (*a7) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
1358 | Lisp_Object (*a8) (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
d5273788 | 1359 | Lisp_Object (*aUNEVALLED) (Lisp_Object args); |
f66c7cf8 | 1360 | Lisp_Object (*aMANY) (ptrdiff_t, Lisp_Object *); |
c0f2f16b | 1361 | } function; |
3cfe6dfd | 1362 | short min_args, max_args; |
5e2327cf | 1363 | const char *symbol_name; |
89dc303e DN |
1364 | const char *intspec; |
1365 | const char *doc; | |
3cfe6dfd | 1366 | }; |
5010d3b8 | 1367 | |
03a660a6 PE |
1368 | /* This is the number of slots that every char table must have. This |
1369 | counts the ordinary slots and the top, defalt, parent, and purpose | |
1370 | slots. */ | |
1371 | enum CHAR_TABLE_STANDARD_SLOTS | |
1372 | { | |
fbe9e0b9 | 1373 | CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras) |
03a660a6 PE |
1374 | }; |
1375 | ||
1376 | /* Return the number of "extra" slots in the char table CT. */ | |
1377 | ||
84575e67 PE |
1378 | LISP_INLINE int |
1379 | CHAR_TABLE_EXTRA_SLOTS (struct Lisp_Char_Table *ct) | |
1380 | { | |
1381 | return ((ct->header.size & PSEUDOVECTOR_SIZE_MASK) | |
1382 | - CHAR_TABLE_STANDARD_SLOTS); | |
1383 | } | |
03a660a6 | 1384 | |
5010d3b8 | 1385 | \f |
a32fa736 GM |
1386 | /*********************************************************************** |
1387 | Symbols | |
1388 | ***********************************************************************/ | |
1389 | ||
1390 | /* Interned state of a symbol. */ | |
1391 | ||
1392 | enum symbol_interned | |
1393 | { | |
1394 | SYMBOL_UNINTERNED = 0, | |
1395 | SYMBOL_INTERNED = 1, | |
1396 | SYMBOL_INTERNED_IN_INITIAL_OBARRAY = 2 | |
1397 | }; | |
1398 | ||
ce5b453a SM |
1399 | enum symbol_redirect |
1400 | { | |
1401 | SYMBOL_PLAINVAL = 4, | |
1402 | SYMBOL_VARALIAS = 1, | |
1403 | SYMBOL_LOCALIZED = 2, | |
9aba6043 | 1404 | SYMBOL_FORWARDED = 3 |
ce5b453a SM |
1405 | }; |
1406 | ||
a32fa736 GM |
1407 | struct Lisp_Symbol |
1408 | { | |
a84f89d5 SM |
1409 | unsigned gcmarkbit : 1; |
1410 | ||
ce5b453a SM |
1411 | /* Indicates where the value can be found: |
1412 | 0 : it's a plain var, the value is in the `value' field. | |
1413 | 1 : it's a varalias, the value is really in the `alias' symbol. | |
1414 | 2 : it's a localized var, the value is in the `blv' object. | |
9aba6043 | 1415 | 3 : it's a forwarding variable, the value is in `forward'. */ |
a6fc3b5c | 1416 | ENUM_BF (symbol_redirect) redirect : 3; |
a32fa736 GM |
1417 | |
1418 | /* Non-zero means symbol is constant, i.e. changing its value | |
ce5b453a SM |
1419 | should signal an error. If the value is 3, then the var |
1420 | can be changed, but only by `defconst'. */ | |
1421 | unsigned constant : 2; | |
a32fa736 GM |
1422 | |
1423 | /* Interned state of the symbol. This is an enumerator from | |
1424 | enum symbol_interned. */ | |
1425 | unsigned interned : 2; | |
1e973bc7 | 1426 | |
b9598260 SM |
1427 | /* Non-zero means that this variable has been explicitly declared |
1428 | special (with `defvar' etc), and shouldn't be lexically bound. */ | |
1429 | unsigned declared_special : 1; | |
a32fa736 | 1430 | |
c644523b DA |
1431 | /* The symbol's name, as a Lisp string. */ |
1432 | Lisp_Object name; | |
a32fa736 | 1433 | |
9aba6043 SM |
1434 | /* Value of the symbol or Qunbound if unbound. Which alternative of the |
1435 | union is used depends on the `redirect' field above. */ | |
ce5b453a | 1436 | union { |
c644523b | 1437 | Lisp_Object value; |
ce5b453a SM |
1438 | struct Lisp_Symbol *alias; |
1439 | struct Lisp_Buffer_Local_Value *blv; | |
1440 | union Lisp_Fwd *fwd; | |
1441 | } val; | |
a32fa736 | 1442 | |
eadf1faa | 1443 | /* Function value of the symbol or Qnil if not fboundp. */ |
c644523b | 1444 | Lisp_Object function; |
a32fa736 GM |
1445 | |
1446 | /* The symbol's property list. */ | |
c644523b | 1447 | Lisp_Object plist; |
e2c0561e | 1448 | |
a32fa736 GM |
1449 | /* Next symbol in obarray bucket, if the symbol is interned. */ |
1450 | struct Lisp_Symbol *next; | |
1451 | }; | |
1452 | ||
74d70085 KR |
1453 | /* Value is name of symbol. */ |
1454 | ||
84575e67 | 1455 | LISP_MACRO_DEFUN (SYMBOL_VAL, Lisp_Object, (struct Lisp_Symbol *sym), (sym)) |
ce5b453a | 1456 | |
84575e67 PE |
1457 | LISP_INLINE struct Lisp_Symbol * |
1458 | SYMBOL_ALIAS (struct Lisp_Symbol *sym) | |
1459 | { | |
1460 | eassert (sym->redirect == SYMBOL_VARALIAS); | |
1461 | return sym->val.alias; | |
1462 | } | |
1463 | LISP_INLINE struct Lisp_Buffer_Local_Value * | |
1464 | SYMBOL_BLV (struct Lisp_Symbol *sym) | |
1465 | { | |
1466 | eassert (sym->redirect == SYMBOL_LOCALIZED); | |
1467 | return sym->val.blv; | |
1468 | } | |
1469 | LISP_INLINE union Lisp_Fwd * | |
1470 | SYMBOL_FWD (struct Lisp_Symbol *sym) | |
1471 | { | |
1472 | eassert (sym->redirect == SYMBOL_FORWARDED); | |
1473 | return sym->val.fwd; | |
1474 | } | |
74d70085 | 1475 | |
84575e67 PE |
1476 | LISP_MACRO_DEFUN_VOID (SET_SYMBOL_VAL, |
1477 | (struct Lisp_Symbol *sym, Lisp_Object v), (sym, v)) | |
a32fa736 | 1478 | |
84575e67 PE |
1479 | LISP_INLINE void |
1480 | SET_SYMBOL_ALIAS (struct Lisp_Symbol *sym, struct Lisp_Symbol *v) | |
1481 | { | |
1482 | eassert (sym->redirect == SYMBOL_VARALIAS); | |
1483 | sym->val.alias = v; | |
1484 | } | |
1485 | LISP_INLINE void | |
1486 | SET_SYMBOL_BLV (struct Lisp_Symbol *sym, struct Lisp_Buffer_Local_Value *v) | |
1487 | { | |
1488 | eassert (sym->redirect == SYMBOL_LOCALIZED); | |
1489 | sym->val.blv = v; | |
1490 | } | |
1491 | LISP_INLINE void | |
1492 | SET_SYMBOL_FWD (struct Lisp_Symbol *sym, union Lisp_Fwd *v) | |
1493 | { | |
1494 | eassert (sym->redirect == SYMBOL_FORWARDED); | |
1495 | sym->val.fwd = v; | |
1496 | } | |
1497 | ||
1498 | LISP_INLINE Lisp_Object | |
1499 | SYMBOL_NAME (Lisp_Object sym) | |
1500 | { | |
1501 | return XSYMBOL (sym)->name; | |
1502 | } | |
1503 | ||
1504 | /* Value is true if SYM is an interned symbol. */ | |
1505 | ||
1506 | LISP_INLINE bool | |
1507 | SYMBOL_INTERNED_P (Lisp_Object sym) | |
1508 | { | |
1509 | return XSYMBOL (sym)->interned != SYMBOL_UNINTERNED; | |
1510 | } | |
a32fa736 | 1511 | |
84575e67 | 1512 | /* Value is true if SYM is interned in initial_obarray. */ |
a32fa736 | 1513 | |
84575e67 PE |
1514 | LISP_INLINE bool |
1515 | SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (Lisp_Object sym) | |
1516 | { | |
1517 | return XSYMBOL (sym)->interned == SYMBOL_INTERNED_IN_INITIAL_OBARRAY; | |
1518 | } | |
a32fa736 GM |
1519 | |
1520 | /* Value is non-zero if symbol is considered a constant, i.e. its | |
1521 | value cannot be changed (there is an exception for keyword symbols, | |
1522 | whose value can be set to the keyword symbol itself). */ | |
1523 | ||
84575e67 | 1524 | LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P, int, (Lisp_Object sym), (sym)) |
a32fa736 | 1525 | |
c644523b | 1526 | #define DEFSYM(sym, name) \ |
cd3520a4 JB |
1527 | do { (sym) = intern_c_string ((name)); staticpro (&(sym)); } while (0) |
1528 | ||
a32fa736 | 1529 | \f |
5010d3b8 GM |
1530 | /*********************************************************************** |
1531 | Hash Tables | |
1532 | ***********************************************************************/ | |
1533 | ||
1534 | /* The structure of a Lisp hash table. */ | |
1535 | ||
b7432bb2 SM |
1536 | struct hash_table_test |
1537 | { | |
1538 | /* Name of the function used to compare keys. */ | |
1539 | Lisp_Object name; | |
1540 | ||
1541 | /* User-supplied hash function, or nil. */ | |
1542 | Lisp_Object user_hash_function; | |
1543 | ||
1544 | /* User-supplied key comparison function, or nil. */ | |
1545 | Lisp_Object user_cmp_function; | |
1546 | ||
1547 | /* C function to compare two keys. */ | |
1548 | bool (*cmpfn) (struct hash_table_test *t, Lisp_Object, Lisp_Object); | |
1549 | ||
1550 | /* C function to compute hash code. */ | |
1551 | EMACS_UINT (*hashfn) (struct hash_table_test *t, Lisp_Object); | |
1552 | }; | |
1553 | ||
5010d3b8 GM |
1554 | struct Lisp_Hash_Table |
1555 | { | |
eab3844f | 1556 | /* This is for Lisp; the hash table code does not refer to it. */ |
b102ceb1 | 1557 | struct vectorlike_header header; |
e2c0561e | 1558 | |
5010d3b8 GM |
1559 | /* Nil if table is non-weak. Otherwise a symbol describing the |
1560 | weakness of the table. */ | |
1561 | Lisp_Object weak; | |
e2c0561e | 1562 | |
5010d3b8 GM |
1563 | /* When the table is resized, and this is an integer, compute the |
1564 | new size by adding this to the old size. If a float, compute the | |
1565 | new size by multiplying the old size with this factor. */ | |
1566 | Lisp_Object rehash_size; | |
1567 | ||
1568 | /* Resize hash table when number of entries/ table size is >= this | |
1569 | ratio, a float. */ | |
1570 | Lisp_Object rehash_threshold; | |
1571 | ||
5010d3b8 GM |
1572 | /* Vector of hash codes.. If hash[I] is nil, this means that that |
1573 | entry I is unused. */ | |
1574 | Lisp_Object hash; | |
1575 | ||
1576 | /* Vector used to chain entries. If entry I is free, next[I] is the | |
1577 | entry number of the next free item. If entry I is non-free, | |
1578 | next[I] is the index of the next entry in the collision chain. */ | |
1579 | Lisp_Object next; | |
1580 | ||
1581 | /* Index of first free entry in free list. */ | |
1582 | Lisp_Object next_free; | |
1583 | ||
1584 | /* Bucket vector. A non-nil entry is the index of the first item in | |
1585 | a collision chain. This vector's size can be larger than the | |
1586 | hash table size to reduce collisions. */ | |
1587 | Lisp_Object index; | |
1588 | ||
878f97ff | 1589 | /* Only the fields above are traced normally by the GC. The ones below |
78edd3b7 | 1590 | `count' are special and are either ignored by the GC or traced in |
878f97ff SM |
1591 | a special way (e.g. because of weakness). */ |
1592 | ||
1593 | /* Number of key/value entries in the table. */ | |
d311d28c | 1594 | ptrdiff_t count; |
878f97ff SM |
1595 | |
1596 | /* Vector of keys and values. The key of item I is found at index | |
1597 | 2 * I, the value is found at index 2 * I + 1. | |
1598 | This is gc_marked specially if the table is weak. */ | |
1599 | Lisp_Object key_and_value; | |
1600 | ||
b7432bb2 SM |
1601 | /* The comparison and hash functions. */ |
1602 | struct hash_table_test test; | |
1603 | ||
6c661ec9 SM |
1604 | /* Next weak hash table if this is a weak hash table. The head |
1605 | of the list is in weak_hash_tables. */ | |
1606 | struct Lisp_Hash_Table *next_weak; | |
5010d3b8 GM |
1607 | }; |
1608 | ||
1609 | ||
84575e67 PE |
1610 | LISP_INLINE struct Lisp_Hash_Table * |
1611 | XHASH_TABLE (Lisp_Object a) | |
1612 | { | |
1613 | return XUNTAG (a, Lisp_Vectorlike); | |
1614 | } | |
5010d3b8 GM |
1615 | |
1616 | #define XSET_HASH_TABLE(VAR, PTR) \ | |
1617 | (XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE)) | |
1618 | ||
84575e67 PE |
1619 | LISP_INLINE bool |
1620 | HASH_TABLE_P (Lisp_Object a) | |
1621 | { | |
1622 | return PSEUDOVECTORP (a, PVEC_HASH_TABLE); | |
1623 | } | |
5010d3b8 | 1624 | |
141788b5 | 1625 | /* Value is the key part of entry IDX in hash table H. */ |
84575e67 PE |
1626 | LISP_INLINE Lisp_Object |
1627 | HASH_KEY (struct Lisp_Hash_Table *h, ptrdiff_t idx) | |
1628 | { | |
1629 | return AREF (h->key_and_value, 2 * idx); | |
1630 | } | |
141788b5 SM |
1631 | |
1632 | /* Value is the value part of entry IDX in hash table H. */ | |
84575e67 PE |
1633 | LISP_INLINE Lisp_Object |
1634 | HASH_VALUE (struct Lisp_Hash_Table *h, ptrdiff_t idx) | |
1635 | { | |
1636 | return AREF (h->key_and_value, 2 * idx + 1); | |
1637 | } | |
141788b5 SM |
1638 | |
1639 | /* Value is the index of the next entry following the one at IDX | |
1640 | in hash table H. */ | |
84575e67 PE |
1641 | LISP_INLINE Lisp_Object |
1642 | HASH_NEXT (struct Lisp_Hash_Table *h, ptrdiff_t idx) | |
1643 | { | |
1644 | return AREF (h->next, idx); | |
1645 | } | |
141788b5 SM |
1646 | |
1647 | /* Value is the hash code computed for entry IDX in hash table H. */ | |
84575e67 PE |
1648 | LISP_INLINE Lisp_Object |
1649 | HASH_HASH (struct Lisp_Hash_Table *h, ptrdiff_t idx) | |
1650 | { | |
1651 | return AREF (h->hash, idx); | |
1652 | } | |
141788b5 SM |
1653 | |
1654 | /* Value is the index of the element in hash table H that is the | |
1655 | start of the collision list at index IDX in the index vector of H. */ | |
84575e67 PE |
1656 | LISP_INLINE Lisp_Object |
1657 | HASH_INDEX (struct Lisp_Hash_Table *h, ptrdiff_t idx) | |
1658 | { | |
1659 | return AREF (h->index, idx); | |
1660 | } | |
141788b5 SM |
1661 | |
1662 | /* Value is the size of hash table H. */ | |
84575e67 PE |
1663 | LISP_INLINE ptrdiff_t |
1664 | HASH_TABLE_SIZE (struct Lisp_Hash_Table *h) | |
1665 | { | |
1666 | return ASIZE (h->next); | |
1667 | } | |
141788b5 | 1668 | |
5010d3b8 GM |
1669 | /* Default size for hash tables if not specified. */ |
1670 | ||
03a660a6 | 1671 | enum DEFAULT_HASH_SIZE { DEFAULT_HASH_SIZE = 65 }; |
5010d3b8 GM |
1672 | |
1673 | /* Default threshold specifying when to resize a hash table. The | |
1674 | value gives the ratio of current entries in the hash table and the | |
1675 | size of the hash table. */ | |
1676 | ||
185ee146 | 1677 | static double const DEFAULT_REHASH_THRESHOLD = 0.8; |
5010d3b8 GM |
1678 | |
1679 | /* Default factor by which to increase the size of a hash table. */ | |
1680 | ||
185ee146 | 1681 | static double const DEFAULT_REHASH_SIZE = 1.5; |
5010d3b8 | 1682 | |
04a2d0d3 PE |
1683 | /* Combine two integers X and Y for hashing. The result might not fit |
1684 | into a Lisp integer. */ | |
1685 | ||
1686 | LISP_INLINE EMACS_UINT | |
1687 | sxhash_combine (EMACS_UINT x, EMACS_UINT y) | |
1688 | { | |
1689 | return (x << 4) + (x >> (BITS_PER_EMACS_INT - 4)) + y; | |
1690 | } | |
1691 | ||
eff1c190 PE |
1692 | /* Hash X, returning a value that fits into a fixnum. */ |
1693 | ||
1694 | LISP_INLINE EMACS_UINT | |
1695 | SXHASH_REDUCE (EMACS_UINT x) | |
1696 | { | |
1697 | return (x ^ x >> (BITS_PER_EMACS_INT - FIXNUM_BITS)) & INTMASK; | |
1698 | } | |
1699 | ||
7c06ac2b RS |
1700 | /* These structures are used for various misc types. */ |
1701 | ||
67ee9f6e SM |
1702 | struct Lisp_Misc_Any /* Supertype of all Misc types. */ |
1703 | { | |
a6fc3b5c | 1704 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_??? */ |
67ee9f6e SM |
1705 | unsigned gcmarkbit : 1; |
1706 | int spacer : 15; | |
1707 | }; | |
1708 | ||
3cfe6dfd | 1709 | struct Lisp_Marker |
308e97d0 | 1710 | { |
a6fc3b5c | 1711 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Marker */ |
a84f89d5 | 1712 | unsigned gcmarkbit : 1; |
9bb13d08 KH |
1713 | int spacer : 13; |
1714 | /* This flag is temporarily used in the functions | |
1715 | decode/encode_coding_object to record that the marker position | |
1716 | must be adjusted after the conversion. */ | |
1717 | unsigned int need_adjustment : 1; | |
308e97d0 RS |
1718 | /* 1 means normal insertion at the marker's position |
1719 | leaves the marker after the inserted text. */ | |
1720 | unsigned int insertion_type : 1; | |
b9466edb SM |
1721 | /* This is the buffer that the marker points into, or 0 if it points nowhere. |
1722 | Note: a chain of markers can contain markers pointing into different | |
1723 | buffers (the chain is per buffer_text rather than per buffer, so it's | |
1724 | shared between indirect buffers). */ | |
1725 | /* This is used for (other than NULL-checking): | |
1726 | - Fmarker_buffer | |
1727 | - Fset_marker: check eq(oldbuf, newbuf) to avoid unchain+rechain. | |
1728 | - unchain_marker: to find the list from which to unchain. | |
ce5b453a | 1729 | - Fkill_buffer: to only unchain the markers of current indirect buffer. |
b9466edb | 1730 | */ |
308e97d0 | 1731 | struct buffer *buffer; |
4ed24bf3 RS |
1732 | |
1733 | /* The remaining fields are meaningless in a marker that | |
1734 | does not point anywhere. */ | |
1735 | ||
1736 | /* For markers that point somewhere, | |
1737 | this is used to chain of all the markers in a given buffer. */ | |
d6aa1876 SM |
1738 | /* We could remove it and use an array in buffer_text instead. |
1739 | That would also allow to preserve it ordered. */ | |
c0ac2f4a | 1740 | struct Lisp_Marker *next; |
4ed24bf3 | 1741 | /* This is the char position where the marker points. */ |
d311d28c | 1742 | ptrdiff_t charpos; |
ce5b453a SM |
1743 | /* This is the byte position. |
1744 | It's mostly used as a charpos<->bytepos cache (i.e. it's not directly | |
1745 | used to implement the functionality of markers, but rather to (ab)use | |
1746 | markers as a cache for char<->byte mappings). */ | |
d311d28c | 1747 | ptrdiff_t bytepos; |
308e97d0 | 1748 | }; |
3cfe6dfd | 1749 | |
7555c33f SM |
1750 | /* START and END are markers in the overlay's buffer, and |
1751 | PLIST is the overlay's property list. */ | |
1752 | struct Lisp_Overlay | |
fa691a83 DA |
1753 | /* An overlay's real data content is: |
1754 | - plist | |
1755 | - buffer (really there are two buffer pointers, one per marker, | |
1756 | and both points to the same buffer) | |
1757 | - insertion type of both ends (per-marker fields) | |
1758 | - start & start byte (of start marker) | |
1759 | - end & end byte (of end marker) | |
1760 | - next (singly linked list of overlays) | |
1761 | - next fields of start and end markers (singly linked list of markers). | |
1762 | I.e. 9words plus 2 bits, 3words of which are for external linked lists. | |
1763 | */ | |
7555c33f SM |
1764 | { |
1765 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Overlay */ | |
1766 | unsigned gcmarkbit : 1; | |
1767 | int spacer : 15; | |
1768 | struct Lisp_Overlay *next; | |
c644523b DA |
1769 | Lisp_Object start; |
1770 | Lisp_Object end; | |
1771 | Lisp_Object plist; | |
7555c33f SM |
1772 | }; |
1773 | ||
73ebd38f DA |
1774 | /* Types of data which may be saved in a Lisp_Save_Value. */ |
1775 | ||
1776 | enum | |
1777 | { | |
1778 | SAVE_UNUSED, | |
1779 | SAVE_INTEGER, | |
52a9bcae | 1780 | SAVE_FUNCPOINTER, |
73ebd38f DA |
1781 | SAVE_POINTER, |
1782 | SAVE_OBJECT | |
1783 | }; | |
1784 | ||
7b1123d8 | 1785 | /* Number of bits needed to store one of the above values. */ |
52a9bcae | 1786 | enum { SAVE_SLOT_BITS = 3 }; |
7b1123d8 PE |
1787 | |
1788 | /* Number of slots in a save value where save_type is nonzero. */ | |
1789 | enum { SAVE_VALUE_SLOTS = 4 }; | |
1790 | ||
1791 | /* Bit-width and values for struct Lisp_Save_Value's save_type member. */ | |
1792 | ||
1793 | enum { SAVE_TYPE_BITS = SAVE_VALUE_SLOTS * SAVE_SLOT_BITS + 1 }; | |
1794 | ||
1795 | enum Lisp_Save_Type | |
1796 | { | |
1797 | SAVE_TYPE_INT_INT = SAVE_INTEGER + (SAVE_INTEGER << SAVE_SLOT_BITS), | |
1798 | SAVE_TYPE_INT_INT_INT | |
1799 | = (SAVE_INTEGER + (SAVE_TYPE_INT_INT << SAVE_SLOT_BITS)), | |
1800 | SAVE_TYPE_OBJ_OBJ = SAVE_OBJECT + (SAVE_OBJECT << SAVE_SLOT_BITS), | |
1801 | SAVE_TYPE_OBJ_OBJ_OBJ = SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ << SAVE_SLOT_BITS), | |
1802 | SAVE_TYPE_OBJ_OBJ_OBJ_OBJ | |
1803 | = SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ_OBJ << SAVE_SLOT_BITS), | |
1804 | SAVE_TYPE_PTR_INT = SAVE_POINTER + (SAVE_INTEGER << SAVE_SLOT_BITS), | |
1805 | SAVE_TYPE_PTR_OBJ = SAVE_POINTER + (SAVE_OBJECT << SAVE_SLOT_BITS), | |
1806 | SAVE_TYPE_PTR_PTR = SAVE_POINTER + (SAVE_POINTER << SAVE_SLOT_BITS), | |
52a9bcae PE |
1807 | SAVE_TYPE_FUNCPTR_PTR_OBJ |
1808 | = SAVE_FUNCPOINTER + (SAVE_TYPE_PTR_OBJ << SAVE_SLOT_BITS), | |
7b1123d8 PE |
1809 | |
1810 | /* This has an extra bit indicating it's raw memory. */ | |
1811 | SAVE_TYPE_MEMORY = SAVE_TYPE_PTR_INT + (1 << (SAVE_TYPE_BITS - 1)) | |
1812 | }; | |
1813 | ||
468afbac DA |
1814 | /* Special object used to hold a different values for later use. |
1815 | ||
1816 | This is mostly used to package C integers and pointers to call | |
27e498e6 | 1817 | record_unwind_protect when two or more values need to be saved. |
1396ac86 | 1818 | For example: |
468afbac DA |
1819 | |
1820 | ... | |
1821 | struct my_data *md = get_my_data (); | |
1396ac86 PE |
1822 | ptrdiff_t mi = get_my_integer (); |
1823 | record_unwind_protect (my_unwind, make_save_ptr_int (md, mi)); | |
468afbac DA |
1824 | ... |
1825 | ||
1826 | Lisp_Object my_unwind (Lisp_Object arg) | |
1827 | { | |
1828 | struct my_data *md = XSAVE_POINTER (arg, 0); | |
1396ac86 | 1829 | ptrdiff_t mi = XSAVE_INTEGER (arg, 1); |
468afbac DA |
1830 | ... |
1831 | } | |
1832 | ||
1833 | If ENABLE_CHECKING is in effect, XSAVE_xxx macros do type checking of the | |
1834 | saved objects and raise eassert if type of the saved object doesn't match | |
1835 | the type which is extracted. In the example above, XSAVE_INTEGER (arg, 2) | |
1396ac86 PE |
1836 | and XSAVE_OBJECT (arg, 0) are wrong because nothing was saved in slot 2 and |
1837 | slot 0 is a pointer. */ | |
73ebd38f | 1838 | |
52a9bcae PE |
1839 | typedef void (*voidfuncptr) (void); |
1840 | ||
7555c33f SM |
1841 | struct Lisp_Save_Value |
1842 | { | |
1843 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Save_Value */ | |
1844 | unsigned gcmarkbit : 1; | |
7b1123d8 PE |
1845 | int spacer : 32 - (16 + 1 + SAVE_TYPE_BITS); |
1846 | ||
1396ac86 PE |
1847 | /* V->data may hold up to SAVE_VALUE_SLOTS entries. The type of |
1848 | V's data entries are determined by V->save_type. E.g., if | |
1849 | V->save_type == SAVE_TYPE_PTR_OBJ, V->data[0] is a pointer, | |
1850 | V->data[1] is an integer, and V's other data entries are unused. | |
7b1123d8 | 1851 | |
1396ac86 PE |
1852 | If V->save_type == SAVE_TYPE_MEMORY, V->data[0].pointer is the address of |
1853 | a memory area containing V->data[1].integer potential Lisp_Objects. */ | |
7b1123d8 | 1854 | ENUM_BF (Lisp_Save_Type) save_type : SAVE_TYPE_BITS; |
73ebd38f DA |
1855 | union { |
1856 | void *pointer; | |
52a9bcae | 1857 | voidfuncptr funcpointer; |
73ebd38f DA |
1858 | ptrdiff_t integer; |
1859 | Lisp_Object object; | |
7b1123d8 | 1860 | } data[SAVE_VALUE_SLOTS]; |
7555c33f SM |
1861 | }; |
1862 | ||
84575e67 PE |
1863 | /* Return the type of V's Nth saved value. */ |
1864 | LISP_INLINE int | |
1865 | save_type (struct Lisp_Save_Value *v, int n) | |
1866 | { | |
1867 | eassert (0 <= n && n < SAVE_VALUE_SLOTS); | |
1868 | return (v->save_type >> (SAVE_SLOT_BITS * n) & ((1 << SAVE_SLOT_BITS) - 1)); | |
1869 | } | |
1870 | ||
1871 | /* Get and set the Nth saved pointer. */ | |
1872 | ||
1873 | LISP_INLINE void * | |
1874 | XSAVE_POINTER (Lisp_Object obj, int n) | |
1875 | { | |
1876 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER); | |
52a9bcae | 1877 | return XSAVE_VALUE (obj)->data[n].pointer; |
84575e67 PE |
1878 | } |
1879 | LISP_INLINE void | |
1880 | set_save_pointer (Lisp_Object obj, int n, void *val) | |
1881 | { | |
1882 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER); | |
1883 | XSAVE_VALUE (obj)->data[n].pointer = val; | |
1884 | } | |
52a9bcae PE |
1885 | LISP_INLINE voidfuncptr |
1886 | XSAVE_FUNCPOINTER (Lisp_Object obj, int n) | |
1887 | { | |
1888 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_FUNCPOINTER); | |
1889 | return XSAVE_VALUE (obj)->data[n].funcpointer; | |
1890 | } | |
84575e67 PE |
1891 | |
1892 | /* Likewise for the saved integer. */ | |
1893 | ||
1894 | LISP_INLINE ptrdiff_t | |
1895 | XSAVE_INTEGER (Lisp_Object obj, int n) | |
1896 | { | |
1897 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER); | |
1898 | return XSAVE_VALUE (obj)->data[n].integer; | |
1899 | } | |
1900 | LISP_INLINE void | |
1901 | set_save_integer (Lisp_Object obj, int n, ptrdiff_t val) | |
1902 | { | |
1903 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER); | |
1904 | XSAVE_VALUE (obj)->data[n].integer = val; | |
1905 | } | |
1906 | ||
1907 | /* Extract Nth saved object. */ | |
1908 | ||
1909 | LISP_INLINE Lisp_Object | |
1910 | XSAVE_OBJECT (Lisp_Object obj, int n) | |
1911 | { | |
1912 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_OBJECT); | |
1913 | return XSAVE_VALUE (obj)->data[n].object; | |
1914 | } | |
1915 | ||
7555c33f SM |
1916 | /* A miscellaneous object, when it's on the free list. */ |
1917 | struct Lisp_Free | |
1918 | { | |
1919 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Free */ | |
1920 | unsigned gcmarkbit : 1; | |
1921 | int spacer : 15; | |
1922 | union Lisp_Misc *chain; | |
1923 | }; | |
1924 | ||
1925 | /* To get the type field of a union Lisp_Misc, use XMISCTYPE. | |
1926 | It uses one of these struct subtypes to get the type field. */ | |
1927 | ||
1928 | union Lisp_Misc | |
1929 | { | |
1930 | struct Lisp_Misc_Any u_any; /* Supertype of all Misc types. */ | |
1931 | struct Lisp_Free u_free; | |
1932 | struct Lisp_Marker u_marker; | |
1933 | struct Lisp_Overlay u_overlay; | |
1934 | struct Lisp_Save_Value u_save_value; | |
1935 | }; | |
1936 | ||
84575e67 PE |
1937 | LISP_INLINE union Lisp_Misc * |
1938 | XMISC (Lisp_Object a) | |
1939 | { | |
1940 | return XUNTAG (a, Lisp_Misc); | |
1941 | } | |
1942 | ||
1943 | LISP_INLINE struct Lisp_Misc_Any * | |
1944 | XMISCANY (Lisp_Object a) | |
1945 | { | |
1946 | eassert (MISCP (a)); | |
1947 | return & XMISC (a)->u_any; | |
1948 | } | |
1949 | ||
1950 | LISP_INLINE enum Lisp_Misc_Type | |
1951 | XMISCTYPE (Lisp_Object a) | |
1952 | { | |
1953 | return XMISCANY (a)->type; | |
1954 | } | |
1955 | ||
1956 | LISP_INLINE struct Lisp_Marker * | |
1957 | XMARKER (Lisp_Object a) | |
1958 | { | |
1959 | eassert (MARKERP (a)); | |
1960 | return & XMISC (a)->u_marker; | |
1961 | } | |
1962 | ||
1963 | LISP_INLINE struct Lisp_Overlay * | |
1964 | XOVERLAY (Lisp_Object a) | |
1965 | { | |
1966 | eassert (OVERLAYP (a)); | |
1967 | return & XMISC (a)->u_overlay; | |
1968 | } | |
1969 | ||
1970 | LISP_INLINE struct Lisp_Save_Value * | |
1971 | XSAVE_VALUE (Lisp_Object a) | |
1972 | { | |
1973 | eassert (SAVE_VALUEP (a)); | |
1974 | return & XMISC (a)->u_save_value; | |
1975 | } | |
1976 | \f | |
ee4c9ce4 KH |
1977 | /* Forwarding pointer to an int variable. |
1978 | This is allowed only in the value cell of a symbol, | |
1979 | and it means that the symbol's value really lives in the | |
1980 | specified int variable. */ | |
1981 | struct Lisp_Intfwd | |
84d1833e | 1982 | { |
ce5b453a | 1983 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Int */ |
31ade731 | 1984 | EMACS_INT *intvar; |
ee4c9ce4 KH |
1985 | }; |
1986 | ||
1987 | /* Boolean forwarding pointer to an int variable. | |
1988 | This is like Lisp_Intfwd except that the ostensible | |
1989 | "value" of the symbol is t if the int variable is nonzero, | |
1990 | nil if it is zero. */ | |
1991 | struct Lisp_Boolfwd | |
1992 | { | |
ce5b453a | 1993 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Bool */ |
f5d9e83a | 1994 | bool *boolvar; |
ee4c9ce4 KH |
1995 | }; |
1996 | ||
1997 | /* Forwarding pointer to a Lisp_Object variable. | |
1998 | This is allowed only in the value cell of a symbol, | |
1999 | and it means that the symbol's value really lives in the | |
2000 | specified variable. */ | |
2001 | struct Lisp_Objfwd | |
2002 | { | |
ce5b453a | 2003 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Obj */ |
ee4c9ce4 KH |
2004 | Lisp_Object *objvar; |
2005 | }; | |
2006 | ||
2007 | /* Like Lisp_Objfwd except that value lives in a slot in the | |
2008 | current buffer. Value is byte index of slot within buffer. */ | |
2009 | struct Lisp_Buffer_Objfwd | |
2010 | { | |
ce5b453a | 2011 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Buffer_Obj */ |
ee4c9ce4 | 2012 | int offset; |
58cc0a01 DA |
2013 | /* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */ |
2014 | Lisp_Object predicate; | |
84d1833e KH |
2015 | }; |
2016 | ||
65d0110b RS |
2017 | /* struct Lisp_Buffer_Local_Value is used in a symbol value cell when |
2018 | the symbol has buffer-local or frame-local bindings. (Exception: | |
2019 | some buffer-local variables are built-in, with their values stored | |
2020 | in the buffer structure itself. They are handled differently, | |
2021 | using struct Lisp_Buffer_Objfwd.) | |
2022 | ||
2023 | The `realvalue' slot holds the variable's current value, or a | |
2024 | forwarding pointer to where that value is kept. This value is the | |
2025 | one that corresponds to the loaded binding. To read or set the | |
2026 | variable, you must first make sure the right binding is loaded; | |
2027 | then you can access the value in (or through) `realvalue'. | |
e2c0561e | 2028 | |
65d0110b RS |
2029 | `buffer' and `frame' are the buffer and frame for which the loaded |
2030 | binding was found. If those have changed, to make sure the right | |
2031 | binding is loaded it is necessary to find which binding goes with | |
2032 | the current buffer and selected frame, then load it. To load it, | |
2033 | first unload the previous binding, then copy the value of the new | |
2034 | binding into `realvalue' (or through it). Also update | |
2035 | LOADED-BINDING to point to the newly loaded binding. | |
7d65f1c2 | 2036 | |
78edd3b7 JB |
2037 | `local_if_set' indicates that merely setting the variable creates a |
2038 | local binding for the current buffer. Otherwise the latter, setting | |
2039 | the variable does not do that; only make-local-variable does that. */ | |
65d0110b | 2040 | |
7d65f1c2 KH |
2041 | struct Lisp_Buffer_Local_Value |
2042 | { | |
67ee9f6e | 2043 | /* 1 means that merely setting the variable creates a local |
7555c33f | 2044 | binding for the current buffer. */ |
67ee9f6e | 2045 | unsigned int local_if_set : 1; |
ce5b453a SM |
2046 | /* 1 means this variable can have frame-local bindings, otherwise, it is |
2047 | can have buffer-local bindings. The two cannot be combined. */ | |
2048 | unsigned int frame_local : 1; | |
2049 | /* 1 means that the binding now loaded was found. | |
7555c33f | 2050 | Presumably equivalent to (defcell!=valcell). */ |
ce5b453a SM |
2051 | unsigned int found : 1; |
2052 | /* If non-NULL, a forwarding to the C var where it should also be set. */ | |
2053 | union Lisp_Fwd *fwd; /* Should never be (Buffer|Kboard)_Objfwd. */ | |
2054 | /* The buffer or frame for which the loaded binding was found. */ | |
2055 | Lisp_Object where; | |
2056 | /* A cons cell that holds the default value. It has the form | |
2057 | (SYMBOL . DEFAULT-VALUE). */ | |
2058 | Lisp_Object defcell; | |
2059 | /* The cons cell from `where's parameter alist. | |
2060 | It always has the form (SYMBOL . VALUE) | |
2061 | Note that if `forward' is non-nil, VALUE may be out of date. | |
2062 | Also if the currently loaded binding is the default binding, then | |
2063 | this is `eq'ual to defcell. */ | |
2064 | Lisp_Object valcell; | |
7d65f1c2 KH |
2065 | }; |
2066 | ||
f334de0e | 2067 | /* Like Lisp_Objfwd except that value lives in a slot in the |
32462604 KH |
2068 | current kboard. */ |
2069 | struct Lisp_Kboard_Objfwd | |
f334de0e | 2070 | { |
ce5b453a | 2071 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Kboard_Obj */ |
f334de0e KH |
2072 | int offset; |
2073 | }; | |
2074 | ||
ce5b453a SM |
2075 | union Lisp_Fwd |
2076 | { | |
d55c12ed AS |
2077 | struct Lisp_Intfwd u_intfwd; |
2078 | struct Lisp_Boolfwd u_boolfwd; | |
2079 | struct Lisp_Objfwd u_objfwd; | |
2080 | struct Lisp_Buffer_Objfwd u_buffer_objfwd; | |
2081 | struct Lisp_Kboard_Objfwd u_kboard_objfwd; | |
84d1833e | 2082 | }; |
84575e67 PE |
2083 | |
2084 | LISP_INLINE enum Lisp_Fwd_Type | |
2085 | XFWDTYPE (union Lisp_Fwd *a) | |
2086 | { | |
2087 | return a->u_intfwd.type; | |
2088 | } | |
2089 | ||
2090 | LISP_INLINE struct Lisp_Buffer_Objfwd * | |
2091 | XBUFFER_OBJFWD (union Lisp_Fwd *a) | |
2092 | { | |
2093 | eassert (BUFFER_OBJFWDP (a)); | |
2094 | return &a->u_buffer_objfwd; | |
2095 | } | |
7c06ac2b | 2096 | \f |
7555c33f | 2097 | /* Lisp floating point type. */ |
3cfe6dfd JB |
2098 | struct Lisp_Float |
2099 | { | |
3a623fee AS |
2100 | union |
2101 | { | |
3a623fee | 2102 | double data; |
3a623fee AS |
2103 | struct Lisp_Float *chain; |
2104 | } u; | |
3cfe6dfd | 2105 | }; |
8f34f70a | 2106 | |
84575e67 PE |
2107 | LISP_INLINE double |
2108 | XFLOAT_DATA (Lisp_Object f) | |
2109 | { | |
2110 | return XFLOAT (f)->u.data; | |
2111 | } | |
3cfe6dfd | 2112 | |
4d7e6e51 PE |
2113 | /* Most hosts nowadays use IEEE floating point, so they use IEC 60559 |
2114 | representations, have infinities and NaNs, and do not trap on | |
2115 | exceptions. Define IEEE_FLOATING_POINT if this host is one of the | |
2116 | typical ones. The C11 macro __STDC_IEC_559__ is close to what is | |
2117 | wanted here, but is not quite right because Emacs does not require | |
2118 | all the features of C11 Annex F (and does not require C11 at all, | |
2119 | for that matter). */ | |
84575e67 PE |
2120 | enum |
2121 | { | |
2122 | IEEE_FLOATING_POINT | |
2123 | = (FLT_RADIX == 2 && FLT_MANT_DIG == 24 | |
2124 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) | |
2125 | }; | |
4d7e6e51 | 2126 | |
3cfe6dfd | 2127 | /* A character, declared with the following typedef, is a member |
99a3d506 | 2128 | of some character set associated with the current buffer. */ |
b2ba7b00 RS |
2129 | #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */ |
2130 | #define _UCHAR_T | |
3cfe6dfd | 2131 | typedef unsigned char UCHAR; |
b2ba7b00 | 2132 | #endif |
3cfe6dfd JB |
2133 | |
2134 | /* Meanings of slots in a Lisp_Compiled: */ | |
2135 | ||
03a660a6 PE |
2136 | enum Lisp_Compiled |
2137 | { | |
2138 | COMPILED_ARGLIST = 0, | |
2139 | COMPILED_BYTECODE = 1, | |
2140 | COMPILED_CONSTANTS = 2, | |
2141 | COMPILED_STACK_DEPTH = 3, | |
2142 | COMPILED_DOC_STRING = 4, | |
2143 | COMPILED_INTERACTIVE = 5 | |
2144 | }; | |
88dbfee5 | 2145 | |
d03f79ef JB |
2146 | /* Flag bits in a character. These also get used in termhooks.h. |
2147 | Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE | |
7c06ac2b RS |
2148 | (MUlti-Lingual Emacs) might need 22 bits for the character value |
2149 | itself, so we probably shouldn't use any bits lower than 0x0400000. */ | |
03a660a6 PE |
2150 | enum char_bits |
2151 | { | |
2152 | CHAR_ALT = 0x0400000, | |
2153 | CHAR_SUPER = 0x0800000, | |
2154 | CHAR_HYPER = 0x1000000, | |
2155 | CHAR_SHIFT = 0x2000000, | |
2156 | CHAR_CTL = 0x4000000, | |
2157 | CHAR_META = 0x8000000, | |
2158 | ||
2159 | CHAR_MODIFIER_MASK = | |
88fb40b4 | 2160 | CHAR_ALT | CHAR_SUPER | CHAR_HYPER | CHAR_SHIFT | CHAR_CTL | CHAR_META, |
03a660a6 PE |
2161 | |
2162 | /* Actually, the current Emacs uses 22 bits for the character value | |
2163 | itself. */ | |
2164 | CHARACTERBITS = 22 | |
2165 | }; | |
3cfe6dfd | 2166 | \f |
7ea692f6 EZ |
2167 | /* Structure to hold mouse highlight data. This is here because other |
2168 | header files need it for defining struct x_output etc. */ | |
2169 | typedef struct { | |
2170 | /* These variables describe the range of text currently shown in its | |
2171 | mouse-face, together with the window they apply to. As long as | |
2172 | the mouse stays within this range, we need not redraw anything on | |
2173 | its account. Rows and columns are glyph matrix positions in | |
2174 | MOUSE_FACE_WINDOW. */ | |
2175 | int mouse_face_beg_row, mouse_face_beg_col; | |
2176 | int mouse_face_beg_x, mouse_face_beg_y; | |
2177 | int mouse_face_end_row, mouse_face_end_col; | |
2178 | int mouse_face_end_x, mouse_face_end_y; | |
7ea692f6 EZ |
2179 | Lisp_Object mouse_face_window; |
2180 | int mouse_face_face_id; | |
2181 | Lisp_Object mouse_face_overlay; | |
2182 | ||
7ea692f6 EZ |
2183 | /* FRAME and X, Y position of mouse when last checked for |
2184 | highlighting. X and Y can be negative or out of range for the frame. */ | |
2185 | struct frame *mouse_face_mouse_frame; | |
2186 | int mouse_face_mouse_x, mouse_face_mouse_y; | |
2187 | ||
350f51ad DA |
2188 | /* Nonzero if part of the text currently shown in |
2189 | its mouse-face is beyond the window end. */ | |
2190 | unsigned mouse_face_past_end : 1; | |
2191 | ||
7ea692f6 | 2192 | /* Nonzero means defer mouse-motion highlighting. */ |
350f51ad | 2193 | unsigned mouse_face_defer : 1; |
7ea692f6 EZ |
2194 | |
2195 | /* Nonzero means that the mouse highlight should not be shown. */ | |
350f51ad | 2196 | unsigned mouse_face_hidden : 1; |
7ea692f6 EZ |
2197 | } Mouse_HLInfo; |
2198 | \f | |
e7032e7c | 2199 | /* Data type checking. */ |
3cfe6dfd | 2200 | |
84575e67 | 2201 | LISP_MACRO_DEFUN (NILP, bool, (Lisp_Object x), (x)) |
3cfe6dfd | 2202 | |
84575e67 PE |
2203 | LISP_INLINE bool |
2204 | NUMBERP (Lisp_Object x) | |
2205 | { | |
2206 | return INTEGERP (x) || FLOATP (x); | |
2207 | } | |
2208 | LISP_INLINE bool | |
2209 | NATNUMP (Lisp_Object x) | |
2210 | { | |
2211 | return INTEGERP (x) && 0 <= XINT (x); | |
2212 | } | |
2213 | ||
2214 | LISP_INLINE bool | |
2215 | RANGED_INTEGERP (intmax_t lo, Lisp_Object x, intmax_t hi) | |
2216 | { | |
2217 | return INTEGERP (x) && lo <= XINT (x) && XINT (x) <= hi; | |
2218 | } | |
4746118a | 2219 | |
ca9ce8f2 | 2220 | #define TYPE_RANGED_INTEGERP(type, x) \ |
84575e67 PE |
2221 | (INTEGERP (x) \ |
2222 | && (TYPE_SIGNED (type) ? TYPE_MINIMUM (type) <= XINT (x) : 0 <= XINT (x)) \ | |
2223 | && XINT (x) <= TYPE_MAXIMUM (type)) | |
2224 | ||
2225 | LISP_MACRO_DEFUN (CONSP, bool, (Lisp_Object x), (x)) | |
2226 | LISP_MACRO_DEFUN (FLOATP, bool, (Lisp_Object x), (x)) | |
2227 | LISP_MACRO_DEFUN (MISCP, bool, (Lisp_Object x), (x)) | |
2228 | LISP_MACRO_DEFUN (SYMBOLP, bool, (Lisp_Object x), (x)) | |
2229 | LISP_MACRO_DEFUN (INTEGERP, bool, (Lisp_Object x), (x)) | |
2230 | LISP_MACRO_DEFUN (VECTORLIKEP, bool, (Lisp_Object x), (x)) | |
2231 | LISP_MACRO_DEFUN (MARKERP, bool, (Lisp_Object x), (x)) | |
2232 | ||
2233 | LISP_INLINE bool | |
2234 | STRINGP (Lisp_Object x) | |
2235 | { | |
2236 | return XTYPE (x) == Lisp_String; | |
2237 | } | |
2238 | LISP_INLINE bool | |
2239 | VECTORP (Lisp_Object x) | |
2240 | { | |
2241 | return VECTORLIKEP (x) && ! (ASIZE (x) & PSEUDOVECTOR_FLAG); | |
2242 | } | |
2243 | LISP_INLINE bool | |
2244 | OVERLAYP (Lisp_Object x) | |
2245 | { | |
2246 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Overlay; | |
2247 | } | |
2248 | LISP_INLINE bool | |
2249 | SAVE_VALUEP (Lisp_Object x) | |
2250 | { | |
2251 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Save_Value; | |
2252 | } | |
2253 | ||
2254 | LISP_INLINE bool | |
2255 | AUTOLOADP (Lisp_Object x) | |
2256 | { | |
2257 | return CONSP (x) && EQ (Qautoload, XCAR (x)); | |
2258 | } | |
7b1123d8 PE |
2259 | |
2260 | LISP_INLINE bool | |
84575e67 | 2261 | BUFFER_OBJFWDP (union Lisp_Fwd *a) |
7b1123d8 | 2262 | { |
84575e67 | 2263 | return XFWDTYPE (a) == Lisp_Fwd_Buffer_Obj; |
7b1123d8 | 2264 | } |
edfa9106 | 2265 | |
84575e67 PE |
2266 | LISP_INLINE bool |
2267 | PSEUDOVECTOR_TYPEP (struct vectorlike_header *a, int code) | |
717b8bcd | 2268 | { |
84575e67 PE |
2269 | return ((a->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) |
2270 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))); | |
717b8bcd SM |
2271 | } |
2272 | ||
84575e67 PE |
2273 | /* True if A is a pseudovector whose code is CODE. */ |
2274 | LISP_INLINE bool | |
2275 | PSEUDOVECTORP (Lisp_Object a, int code) | |
717b8bcd | 2276 | { |
84575e67 PE |
2277 | if (! VECTORLIKEP (a)) |
2278 | return 0; | |
2279 | else | |
2280 | { | |
2281 | /* Converting to struct vectorlike_header * avoids aliasing issues. */ | |
2282 | struct vectorlike_header *h = XUNTAG (a, Lisp_Vectorlike); | |
2283 | return PSEUDOVECTOR_TYPEP (h, code); | |
2284 | } | |
717b8bcd SM |
2285 | } |
2286 | ||
717b8bcd | 2287 | |
84575e67 PE |
2288 | /* Test for specific pseudovector types. */ |
2289 | ||
2290 | LISP_INLINE bool | |
2291 | WINDOW_CONFIGURATIONP (Lisp_Object a) | |
717b8bcd | 2292 | { |
84575e67 | 2293 | return PSEUDOVECTORP (a, PVEC_WINDOW_CONFIGURATION); |
717b8bcd | 2294 | } |
84575e67 PE |
2295 | |
2296 | LISP_INLINE bool | |
2297 | PROCESSP (Lisp_Object a) | |
717b8bcd | 2298 | { |
84575e67 | 2299 | return PSEUDOVECTORP (a, PVEC_PROCESS); |
717b8bcd SM |
2300 | } |
2301 | ||
84575e67 PE |
2302 | LISP_INLINE bool |
2303 | WINDOWP (Lisp_Object a) | |
717b8bcd | 2304 | { |
84575e67 | 2305 | return PSEUDOVECTORP (a, PVEC_WINDOW); |
717b8bcd | 2306 | } |
84575e67 PE |
2307 | |
2308 | LISP_INLINE bool | |
2309 | TERMINALP (Lisp_Object a) | |
717b8bcd | 2310 | { |
84575e67 | 2311 | return PSEUDOVECTORP (a, PVEC_TERMINAL); |
717b8bcd SM |
2312 | } |
2313 | ||
84575e67 PE |
2314 | LISP_INLINE bool |
2315 | SUBRP (Lisp_Object a) | |
717b8bcd | 2316 | { |
84575e67 | 2317 | return PSEUDOVECTORP (a, PVEC_SUBR); |
717b8bcd SM |
2318 | } |
2319 | ||
84575e67 PE |
2320 | LISP_INLINE bool |
2321 | COMPILEDP (Lisp_Object a) | |
2322 | { | |
2323 | return PSEUDOVECTORP (a, PVEC_COMPILED); | |
2324 | } | |
32e5c58c | 2325 | |
84575e67 PE |
2326 | LISP_INLINE bool |
2327 | BUFFERP (Lisp_Object a) | |
2328 | { | |
2329 | return PSEUDOVECTORP (a, PVEC_BUFFER); | |
2330 | } | |
7c06ac2b | 2331 | |
84575e67 PE |
2332 | LISP_INLINE bool |
2333 | CHAR_TABLE_P (Lisp_Object a) | |
2334 | { | |
2335 | return PSEUDOVECTORP (a, PVEC_CHAR_TABLE); | |
2336 | } | |
ee28be33 | 2337 | |
84575e67 PE |
2338 | LISP_INLINE bool |
2339 | SUB_CHAR_TABLE_P (Lisp_Object a) | |
2340 | { | |
2341 | return PSEUDOVECTORP (a, PVEC_SUB_CHAR_TABLE); | |
2342 | } | |
eab3844f | 2343 | |
84575e67 PE |
2344 | LISP_INLINE bool |
2345 | BOOL_VECTOR_P (Lisp_Object a) | |
2346 | { | |
2347 | return PSEUDOVECTORP (a, PVEC_BOOL_VECTOR); | |
2348 | } | |
7c06ac2b | 2349 | |
84575e67 PE |
2350 | LISP_INLINE bool |
2351 | FRAMEP (Lisp_Object a) | |
2352 | { | |
2353 | return PSEUDOVECTORP (a, PVEC_FRAME); | |
2354 | } | |
ea724a01 | 2355 | |
6b61353c | 2356 | /* Test for image (image . spec) */ |
84575e67 PE |
2357 | LISP_INLINE bool |
2358 | IMAGEP (Lisp_Object x) | |
2359 | { | |
2360 | return CONSP (x) && EQ (XCAR (x), Qimage); | |
2361 | } | |
6b61353c | 2362 | |
c8a39089 | 2363 | /* Array types. */ |
84575e67 PE |
2364 | LISP_INLINE bool |
2365 | ARRAYP (Lisp_Object x) | |
2366 | { | |
2367 | return VECTORP (x) || STRINGP (x) || CHAR_TABLE_P (x) || BOOL_VECTOR_P (x); | |
2368 | } | |
7c06ac2b | 2369 | \f |
84575e67 PE |
2370 | LISP_INLINE void |
2371 | CHECK_LIST (Lisp_Object x) | |
2372 | { | |
2373 | CHECK_TYPE (CONSP (x) || NILP (x), Qlistp, x); | |
2374 | } | |
3cfe6dfd | 2375 | |
84575e67 PE |
2376 | LISP_MACRO_DEFUN_VOID (CHECK_LIST_CONS, (Lisp_Object x, Lisp_Object y), (x, y)) |
2377 | LISP_MACRO_DEFUN_VOID (CHECK_SYMBOL, (Lisp_Object x), (x)) | |
2378 | LISP_MACRO_DEFUN_VOID (CHECK_NUMBER, (Lisp_Object x), (x)) | |
3cfe6dfd | 2379 | |
84575e67 PE |
2380 | LISP_INLINE void |
2381 | CHECK_STRING (Lisp_Object x) | |
2382 | { | |
2383 | CHECK_TYPE (STRINGP (x), Qstringp, x); | |
2384 | } | |
2385 | LISP_INLINE void | |
2386 | CHECK_STRING_CAR (Lisp_Object x) | |
2387 | { | |
2388 | CHECK_TYPE (STRINGP (XCAR (x)), Qstringp, XCAR (x)); | |
2389 | } | |
2390 | LISP_INLINE void | |
2391 | CHECK_CONS (Lisp_Object x) | |
2392 | { | |
2393 | CHECK_TYPE (CONSP (x), Qconsp, x); | |
2394 | } | |
2395 | LISP_INLINE void | |
2396 | CHECK_VECTOR (Lisp_Object x) | |
2397 | { | |
2398 | CHECK_TYPE (VECTORP (x), Qvectorp, x); | |
2399 | } | |
2400 | LISP_INLINE void | |
2401 | CHECK_VECTOR_OR_STRING (Lisp_Object x) | |
2402 | { | |
2403 | CHECK_TYPE (VECTORP (x) || STRINGP (x), Qarrayp, x); | |
2404 | } | |
2405 | LISP_INLINE void | |
2406 | CHECK_ARRAY (Lisp_Object x, Lisp_Object Qxxxp) | |
2407 | { | |
2408 | CHECK_TYPE (ARRAYP (x), Qxxxp, x); | |
2409 | } | |
2410 | LISP_INLINE void | |
2411 | CHECK_BUFFER (Lisp_Object x) | |
2412 | { | |
2413 | CHECK_TYPE (BUFFERP (x), Qbufferp, x); | |
2414 | } | |
2415 | LISP_INLINE void | |
2416 | CHECK_WINDOW (Lisp_Object x) | |
2417 | { | |
2418 | CHECK_TYPE (WINDOWP (x), Qwindowp, x); | |
2419 | } | |
2420 | LISP_INLINE void | |
2421 | CHECK_PROCESS (Lisp_Object x) | |
2422 | { | |
2423 | CHECK_TYPE (PROCESSP (x), Qprocessp, x); | |
2424 | } | |
2425 | LISP_INLINE void | |
2426 | CHECK_NATNUM (Lisp_Object x) | |
2427 | { | |
2428 | CHECK_TYPE (NATNUMP (x), Qwholenump, x); | |
2429 | } | |
3cfe6dfd | 2430 | |
af5a5a98 | 2431 | #define CHECK_RANGED_INTEGER(x, lo, hi) \ |
d311d28c PE |
2432 | do { \ |
2433 | CHECK_NUMBER (x); \ | |
2434 | if (! ((lo) <= XINT (x) && XINT (x) <= (hi))) \ | |
2435 | args_out_of_range_3 \ | |
2436 | (x, \ | |
2437 | make_number ((lo) < 0 && (lo) < MOST_NEGATIVE_FIXNUM \ | |
2438 | ? MOST_NEGATIVE_FIXNUM \ | |
2439 | : (lo)), \ | |
2440 | make_number (min (hi, MOST_POSITIVE_FIXNUM))); \ | |
2441 | } while (0) | |
2442 | #define CHECK_TYPE_RANGED_INTEGER(type, x) \ | |
2443 | do { \ | |
2444 | if (TYPE_SIGNED (type)) \ | |
af5a5a98 | 2445 | CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \ |
d311d28c | 2446 | else \ |
af5a5a98 | 2447 | CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \ |
d311d28c PE |
2448 | } while (0) |
2449 | ||
874cc80e | 2450 | #define CHECK_NUMBER_COERCE_MARKER(x) \ |
221f4ef3 | 2451 | do { if (MARKERP ((x))) XSETFASTINT (x, marker_position (x)); \ |
c8a39089 | 2452 | else CHECK_TYPE (INTEGERP (x), Qinteger_or_marker_p, x); } while (0) |
3cfe6dfd | 2453 | |
84575e67 PE |
2454 | LISP_INLINE double |
2455 | XFLOATINT (Lisp_Object n) | |
2456 | { | |
2457 | return extract_float (n); | |
2458 | } | |
3cfe6dfd | 2459 | |
84575e67 PE |
2460 | LISP_INLINE void |
2461 | CHECK_NUMBER_OR_FLOAT (Lisp_Object x) | |
2462 | { | |
2463 | CHECK_TYPE (FLOATP (x) || INTEGERP (x), Qnumberp, x); | |
2464 | } | |
3cfe6dfd | 2465 | |
874cc80e | 2466 | #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x) \ |
78edd3b7 | 2467 | do { if (MARKERP (x)) XSETFASTINT (x, marker_position (x)); \ |
c8a39089 | 2468 | else CHECK_TYPE (INTEGERP (x) || FLOATP (x), Qnumber_or_marker_p, x); } while (0) |
3cfe6dfd | 2469 | |
f3fbd155 KR |
2470 | /* Since we can't assign directly to the CAR or CDR fields of a cons |
2471 | cell, use these when checking that those fields contain numbers. */ | |
84575e67 PE |
2472 | LISP_INLINE void |
2473 | CHECK_NUMBER_CAR (Lisp_Object x) | |
2474 | { | |
2475 | Lisp_Object tmp = XCAR (x); | |
2476 | CHECK_NUMBER (tmp); | |
2477 | XSETCAR (x, tmp); | |
2478 | } | |
8f924df7 | 2479 | |
84575e67 PE |
2480 | LISP_INLINE void |
2481 | CHECK_NUMBER_CDR (Lisp_Object x) | |
2482 | { | |
2483 | Lisp_Object tmp = XCDR (x); | |
2484 | CHECK_NUMBER (tmp); | |
2485 | XSETCDR (x, tmp); | |
2486 | } | |
3cfe6dfd JB |
2487 | \f |
2488 | /* Define a built-in function for calling from Lisp. | |
2489 | `lname' should be the name to give the function in Lisp, | |
2490 | as a null-terminated C string. | |
2491 | `fnname' should be the name of the function in C. | |
2492 | By convention, it starts with F. | |
2493 | `sname' should be the name for the C constant structure | |
2494 | that records information on this function for internal use. | |
2495 | By convention, it should be the same as `fnname' but with S instead of F. | |
2496 | It's too bad that C macros can't compute this from `fnname'. | |
2497 | `minargs' should be a number, the minimum number of arguments allowed. | |
2498 | `maxargs' should be a number, the maximum number of arguments allowed, | |
2499 | or else MANY or UNEVALLED. | |
2500 | MANY means pass a vector of evaluated arguments, | |
2501 | in the form of an integer number-of-arguments | |
2502 | followed by the address of a vector of Lisp_Objects | |
2503 | which contains the argument values. | |
2504 | UNEVALLED means pass the list of unevaluated arguments | |
4bca9161 MC |
2505 | `intspec' says how interactive arguments are to be fetched. |
2506 | If the string starts with a `(', `intspec' is evaluated and the resulting | |
2507 | list is the list of arguments. | |
2508 | If it's a string that doesn't start with `(', the value should follow | |
2509 | the one of the doc string for `interactive'. | |
3cfe6dfd | 2510 | A null string means call interactively with no arguments. |
eab9d423 | 2511 | `doc' is documentation for the user. */ |
3cfe6dfd | 2512 | |
c451d7b1 | 2513 | /* This version of DEFUN declares a function prototype with the right |
99a3d506 | 2514 | arguments, so we can catch errors with maxargs at compile-time. */ |
a6fc3b5c EZ |
2515 | #ifdef _MSC_VER |
2516 | #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \ | |
2517 | Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \ | |
e32a5799 | 2518 | static struct Lisp_Subr alignas (GCALIGNMENT) sname = \ |
914adc42 DA |
2519 | { { (PVEC_SUBR << PSEUDOVECTOR_AREA_BITS) \ |
2520 | | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)) }, \ | |
a6fc3b5c EZ |
2521 | { (Lisp_Object (__cdecl *)(void))fnname }, \ |
2522 | minargs, maxargs, lname, intspec, 0}; \ | |
2523 | Lisp_Object fnname | |
2524 | #else /* not _MSC_VER */ | |
29abe551 PE |
2525 | # if __STDC_VERSION__ < 199901 |
2526 | # define DEFUN_FUNCTION_INIT(fnname, maxargs) (Lisp_Object (*) (void)) fnname | |
2527 | # else | |
2528 | # define DEFUN_FUNCTION_INIT(fnname, maxargs) .a ## maxargs = fnname | |
2529 | # endif | |
a6fc3b5c EZ |
2530 | #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \ |
2531 | Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \ | |
e32a5799 | 2532 | static struct Lisp_Subr alignas (GCALIGNMENT) sname = \ |
914adc42 | 2533 | { { PVEC_SUBR << PSEUDOVECTOR_AREA_BITS }, \ |
29abe551 | 2534 | { DEFUN_FUNCTION_INIT (fnname, maxargs) }, \ |
a6fc3b5c EZ |
2535 | minargs, maxargs, lname, intspec, 0}; \ |
2536 | Lisp_Object fnname | |
2537 | #endif | |
c451d7b1 RS |
2538 | |
2539 | /* Note that the weird token-substitution semantics of ANSI C makes | |
99a3d506 | 2540 | this work for MANY and UNEVALLED. */ |
f66c7cf8 | 2541 | #define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *) |
c451d7b1 RS |
2542 | #define DEFUN_ARGS_UNEVALLED (Lisp_Object) |
2543 | #define DEFUN_ARGS_0 (void) | |
2544 | #define DEFUN_ARGS_1 (Lisp_Object) | |
2545 | #define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object) | |
2546 | #define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object) | |
2547 | #define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object) | |
2548 | #define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2549 | Lisp_Object) | |
2550 | #define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2551 | Lisp_Object, Lisp_Object) | |
2552 | #define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2553 | Lisp_Object, Lisp_Object, Lisp_Object) | |
5593f7e3 KH |
2554 | #define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ |
2555 | Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object) | |
276680c4 | 2556 | |
84575e67 PE |
2557 | /* True if OBJ is a Lisp function. */ |
2558 | LISP_INLINE bool | |
2559 | FUNCTIONP (Lisp_Object obj) | |
2560 | { | |
2561 | return functionp (obj); | |
2562 | } | |
e2c0561e | 2563 | |
3cfe6dfd | 2564 | /* defsubr (Sname); |
d19b9aa8 | 2565 | is how we define the symbol for function `name' at start-up time. */ |
383e0970 | 2566 | extern void defsubr (struct Lisp_Subr *); |
3cfe6dfd | 2567 | |
03a660a6 PE |
2568 | enum maxargs |
2569 | { | |
2570 | MANY = -2, | |
2571 | UNEVALLED = -1 | |
2572 | }; | |
3cfe6dfd | 2573 | |
ce5b453a SM |
2574 | extern void defvar_lisp (struct Lisp_Objfwd *, const char *, Lisp_Object *); |
2575 | extern void defvar_lisp_nopro (struct Lisp_Objfwd *, const char *, Lisp_Object *); | |
f5d9e83a | 2576 | extern void defvar_bool (struct Lisp_Boolfwd *, const char *, bool *); |
ce5b453a SM |
2577 | extern void defvar_int (struct Lisp_Intfwd *, const char *, EMACS_INT *); |
2578 | extern void defvar_kboard (struct Lisp_Kboard_Objfwd *, const char *, int); | |
3cfe6dfd JB |
2579 | |
2580 | /* Macros we use to define forwarded Lisp variables. | |
29208e82 | 2581 | These are used in the syms_of_FILENAME functions. |
51b59d79 | 2582 | |
29208e82 TT |
2583 | An ordinary (not in buffer_defaults, per-buffer, or per-keyboard) |
2584 | lisp variable is actually a field in `struct emacs_globals'. The | |
2585 | field's name begins with "f_", which is a convention enforced by | |
2586 | these macros. Each such global has a corresponding #define in | |
2587 | globals.h; the plain name should be used in the code. | |
2588 | ||
2589 | E.g., the global "cons_cells_consed" is declared as "int | |
2590 | f_cons_cells_consed" in globals.h, but there is a define: | |
2591 | ||
2592 | #define cons_cells_consed globals.f_cons_cells_consed | |
2593 | ||
2594 | All C code uses the `cons_cells_consed' name. This is all done | |
2595 | this way to support indirection for multi-threaded Emacs. */ | |
3cfe6dfd | 2596 | |
ce5b453a SM |
2597 | #define DEFVAR_LISP(lname, vname, doc) \ |
2598 | do { \ | |
2599 | static struct Lisp_Objfwd o_fwd; \ | |
29208e82 | 2600 | defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \ |
ce5b453a SM |
2601 | } while (0) |
2602 | #define DEFVAR_LISP_NOPRO(lname, vname, doc) \ | |
2603 | do { \ | |
2604 | static struct Lisp_Objfwd o_fwd; \ | |
29208e82 | 2605 | defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \ |
ce5b453a SM |
2606 | } while (0) |
2607 | #define DEFVAR_BOOL(lname, vname, doc) \ | |
2608 | do { \ | |
2609 | static struct Lisp_Boolfwd b_fwd; \ | |
29208e82 | 2610 | defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \ |
ce5b453a SM |
2611 | } while (0) |
2612 | #define DEFVAR_INT(lname, vname, doc) \ | |
2613 | do { \ | |
2614 | static struct Lisp_Intfwd i_fwd; \ | |
29208e82 | 2615 | defvar_int (&i_fwd, lname, &globals.f_ ## vname); \ |
ce5b453a | 2616 | } while (0) |
92d2947b | 2617 | |
422745d0 TT |
2618 | #define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \ |
2619 | do { \ | |
2620 | static struct Lisp_Objfwd o_fwd; \ | |
eb4916d7 | 2621 | defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \ |
422745d0 TT |
2622 | } while (0) |
2623 | ||
ce5b453a SM |
2624 | #define DEFVAR_KBOARD(lname, vname, doc) \ |
2625 | do { \ | |
2626 | static struct Lisp_Kboard_Objfwd ko_fwd; \ | |
437b2cb4 | 2627 | defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \ |
ce5b453a | 2628 | } while (0) |
0328b6de PE |
2629 | \f |
2630 | /* Save and restore the instruction and environment pointers, | |
2631 | without affecting the signal mask. */ | |
2632 | ||
2633 | #ifdef HAVE__SETJMP | |
2634 | typedef jmp_buf sys_jmp_buf; | |
2635 | # define sys_setjmp(j) _setjmp (j) | |
2636 | # define sys_longjmp(j, v) _longjmp (j, v) | |
2637 | #elif defined HAVE_SIGSETJMP | |
2638 | typedef sigjmp_buf sys_jmp_buf; | |
2639 | # define sys_setjmp(j) sigsetjmp (j, 0) | |
2640 | # define sys_longjmp(j, v) siglongjmp (j, v) | |
2641 | #else | |
7105c8cb EZ |
2642 | /* A platform that uses neither _longjmp nor siglongjmp; assume |
2643 | longjmp does not affect the sigmask. */ | |
0328b6de PE |
2644 | typedef jmp_buf sys_jmp_buf; |
2645 | # define sys_setjmp(j) setjmp (j) | |
2646 | # define sys_longjmp(j, v) longjmp (j, v) | |
2647 | #endif | |
df7cd53b | 2648 | |
3cfe6dfd | 2649 | \f |
2f592f95 SM |
2650 | /* Elisp uses several stacks: |
2651 | - the C stack. | |
2652 | - the bytecode stack: used internally by the bytecode interpreter. | |
2653 | Allocated from the C stack. | |
2654 | - The specpdl stack: keeps track of active unwind-protect and | |
2655 | dynamic-let-bindings. Allocated from the `specpdl' array, a manually | |
2656 | managed stack. | |
2657 | - The catch stack: keeps track of active catch tags. | |
2658 | Allocated on the C stack. This is where the setmp data is kept. | |
2659 | - The handler stack: keeps track of active condition-case handlers. | |
2660 | Allocated on the C stack. Every entry there also uses an entry in | |
2661 | the catch stack. */ | |
2662 | ||
78ca380c JB |
2663 | /* Structure for recording Lisp call stack for backtrace purposes. */ |
2664 | ||
2665 | /* The special binding stack holds the outer values of variables while | |
2666 | they are bound by a function application or a let form, stores the | |
2f592f95 | 2667 | code to be executed for unwind-protect forms. |
78ca380c JB |
2668 | |
2669 | If func is non-zero, undoing this binding applies func to old_value; | |
2670 | This implements record_unwind_protect. | |
5fd6e274 RS |
2671 | |
2672 | Otherwise, the element is a variable binding. | |
e2c0561e | 2673 | |
5fd6e274 | 2674 | If the symbol field is a symbol, it is an ordinary variable binding. |
e2c0561e | 2675 | |
78edd3b7 JB |
2676 | Otherwise, it should be a structure (SYMBOL WHERE . CURRENT-BUFFER), |
2677 | which means having bound a local value while CURRENT-BUFFER was active. | |
2678 | If WHERE is nil this means we saw the default value when binding SYMBOL. | |
2679 | WHERE being a buffer or frame means we saw a buffer-local or frame-local | |
2f592f95 SM |
2680 | value. Other values of WHERE mean an internal error. |
2681 | ||
9349e5f7 | 2682 | NOTE: The specbinding union is defined here, because SPECPDL_INDEX is |
2f592f95 | 2683 | used all over the place, needs to be fast, and needs to know the size of |
9349e5f7 | 2684 | union specbinding. But only eval.c should access it. */ |
5fd6e274 | 2685 | |
2f592f95 | 2686 | enum specbind_tag { |
27e498e6 PE |
2687 | SPECPDL_UNWIND, /* An unwind_protect function on Lisp_Object. */ |
2688 | SPECPDL_UNWIND_PTR, /* Likewise, on void *. */ | |
2689 | SPECPDL_UNWIND_INT, /* Likewise, on int. */ | |
2690 | SPECPDL_UNWIND_VOID, /* Likewise, with no arg. */ | |
2f592f95 SM |
2691 | SPECPDL_BACKTRACE, /* An element of the backtrace. */ |
2692 | SPECPDL_LET, /* A plain and simple dynamic let-binding. */ | |
2693 | /* Tags greater than SPECPDL_LET must be "subkinds" of LET. */ | |
2694 | SPECPDL_LET_LOCAL, /* A buffer-local let-binding. */ | |
2695 | SPECPDL_LET_DEFAULT /* A global binding for a localized var. */ | |
2696 | }; | |
2697 | ||
9349e5f7 | 2698 | union specbinding |
3cfe6dfd | 2699 | { |
9349e5f7 PE |
2700 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
2701 | struct { | |
2702 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
27e498e6 | 2703 | void (*func) (Lisp_Object); |
9349e5f7 | 2704 | Lisp_Object arg; |
9349e5f7 | 2705 | } unwind; |
27e498e6 PE |
2706 | struct { |
2707 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2708 | void (*func) (void *); | |
2709 | void *arg; | |
2710 | } unwind_ptr; | |
2711 | struct { | |
2712 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2713 | void (*func) (int); | |
2714 | int arg; | |
2715 | } unwind_int; | |
2716 | struct { | |
2717 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2718 | void (*func) (void); | |
2719 | } unwind_void; | |
9349e5f7 PE |
2720 | struct { |
2721 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2722 | /* `where' is not used in the case of SPECPDL_LET. */ | |
2723 | Lisp_Object symbol, old_value, where; | |
2724 | } let; | |
2725 | struct { | |
2726 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2727 | bool debug_on_exit : 1; | |
2728 | Lisp_Object function; | |
2729 | Lisp_Object *args; | |
2730 | ptrdiff_t nargs; | |
2731 | } bt; | |
3cfe6dfd JB |
2732 | }; |
2733 | ||
9349e5f7 PE |
2734 | extern union specbinding *specpdl; |
2735 | extern union specbinding *specpdl_ptr; | |
d311d28c | 2736 | extern ptrdiff_t specpdl_size; |
3cfe6dfd | 2737 | |
84575e67 PE |
2738 | LISP_INLINE ptrdiff_t |
2739 | SPECPDL_INDEX (void) | |
2740 | { | |
2741 | return specpdl_ptr - specpdl; | |
2742 | } | |
acb8dc44 | 2743 | |
50f2e553 PE |
2744 | /* Everything needed to describe an active condition case. |
2745 | ||
2746 | Members are volatile if their values need to survive _longjmp when | |
2747 | a 'struct handler' is a local variable. */ | |
3cfe6dfd JB |
2748 | struct handler |
2749 | { | |
78ca380c | 2750 | /* The handler clauses and variable from the condition-case form. */ |
992dd91a RS |
2751 | /* For a handler set up in Lisp code, this is always a list. |
2752 | For an internal handler set up by internal_condition_case*, | |
2753 | this can instead be the symbol t or `error'. | |
2754 | t: handle all conditions. | |
2755 | error: handle all conditions, and errors can run the debugger | |
2756 | or display a backtrace. */ | |
3cfe6dfd | 2757 | Lisp_Object handler; |
50f2e553 PE |
2758 | |
2759 | Lisp_Object volatile var; | |
2760 | ||
22bbbd42 RS |
2761 | /* Fsignal stores here the condition-case clause that applies, |
2762 | and Fcondition_case thus knows which clause to run. */ | |
50f2e553 | 2763 | Lisp_Object volatile chosen_clause; |
78ca380c JB |
2764 | |
2765 | /* Used to effect the longjump out to the handler. */ | |
3cfe6dfd | 2766 | struct catchtag *tag; |
78ca380c JB |
2767 | |
2768 | /* The next enclosing handler. */ | |
3cfe6dfd JB |
2769 | struct handler *next; |
2770 | }; | |
2771 | ||
d7306fe6 DN |
2772 | /* This structure helps implement the `catch' and `throw' control |
2773 | structure. A struct catchtag contains all the information needed | |
2774 | to restore the state of the interpreter after a non-local jump. | |
2775 | ||
2776 | Handlers for error conditions (represented by `struct handler' | |
2777 | structures) just point to a catch tag to do the cleanup required | |
2778 | for their jumps. | |
2779 | ||
2780 | catchtag structures are chained together in the C calling stack; | |
2781 | the `next' member points to the next outer catchtag. | |
2782 | ||
2783 | A call like (throw TAG VAL) searches for a catchtag whose `tag' | |
2784 | member is TAG, and then unbinds to it. The `val' member is used to | |
2785 | hold VAL while the stack is unwound; `val' is returned as the value | |
2786 | of the catch form. | |
2787 | ||
2788 | All the other members are concerned with restoring the interpreter | |
50f2e553 | 2789 | state. |
d7306fe6 | 2790 | |
50f2e553 PE |
2791 | Members are volatile if their values need to survive _longjmp when |
2792 | a 'struct catchtag' is a local variable. */ | |
d7306fe6 DN |
2793 | struct catchtag |
2794 | { | |
2795 | Lisp_Object tag; | |
50f2e553 PE |
2796 | Lisp_Object volatile val; |
2797 | struct catchtag *volatile next; | |
2f592f95 | 2798 | #if 1 /* GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS, but they're defined later. */ |
d7306fe6 | 2799 | struct gcpro *gcpro; |
2f592f95 | 2800 | #endif |
0328b6de | 2801 | sys_jmp_buf jmp; |
d7306fe6 | 2802 | struct handler *handlerlist; |
d311d28c | 2803 | EMACS_INT lisp_eval_depth; |
50f2e553 | 2804 | ptrdiff_t volatile pdlcount; |
d7306fe6 DN |
2805 | int poll_suppress_count; |
2806 | int interrupt_input_blocked; | |
2807 | struct byte_stack *byte_stack; | |
2808 | }; | |
2809 | ||
22bbbd42 RS |
2810 | extern Lisp_Object memory_signal_data; |
2811 | ||
3cfe6dfd JB |
2812 | /* An address near the bottom of the stack. |
2813 | Tells GC how to save a copy of the stack. */ | |
2814 | extern char *stack_bottom; | |
2815 | ||
4742f524 RS |
2816 | /* Check quit-flag and quit if it is non-nil. |
2817 | Typing C-g does not directly cause a quit; it only sets Vquit_flag. | |
2818 | So the program needs to do QUIT at times when it is safe to quit. | |
2819 | Every loop that might run for a long time or might not exit | |
2820 | ought to do QUIT at least once, at a safe place. | |
2821 | Unless that is impossible, of course. | |
2822 | But it is very desirable to avoid creating loops where QUIT is impossible. | |
2823 | ||
2824 | Exception: if you set immediate_quit to nonzero, | |
2825 | then the handler that responds to the C-g does the quit itself. | |
2826 | This is a good thing to do around a loop that has no side effects | |
6c07aac2 AS |
2827 | and (in particular) cannot call arbitrary Lisp code. |
2828 | ||
2829 | If quit-flag is set to `kill-emacs' the SIGINT handler has received | |
2830 | a request to exit Emacs when it is safe to do. */ | |
3cfe6dfd | 2831 | |
383e0970 | 2832 | extern void process_pending_signals (void); |
88d69b7d | 2833 | extern bool volatile pending_signals; |
6b61353c | 2834 | |
7dbda6df | 2835 | extern void process_quit_flag (void); |
a69a6e61 GM |
2836 | #define QUIT \ |
2837 | do { \ | |
2838 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \ | |
6d5eb5b0 | 2839 | process_quit_flag (); \ |
0caaedb1 PE |
2840 | else if (pending_signals) \ |
2841 | process_pending_signals (); \ | |
a69a6e61 | 2842 | } while (0) |
3cfe6dfd | 2843 | |
6b61353c | 2844 | |
3cfe6dfd JB |
2845 | /* Nonzero if ought to quit now. */ |
2846 | ||
efb859b4 | 2847 | #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
3cfe6dfd | 2848 | \f |
31cd66f3 PE |
2849 | extern Lisp_Object Vascii_downcase_table; |
2850 | extern Lisp_Object Vascii_canon_table; | |
3cfe6dfd | 2851 | \f |
99a3d506 | 2852 | /* Structure for recording stack slots that need marking. */ |
3cfe6dfd | 2853 | |
78edd3b7 JB |
2854 | /* This is a chain of structures, each of which points at a Lisp_Object |
2855 | variable whose value should be marked in garbage collection. | |
2856 | Normally every link of the chain is an automatic variable of a function, | |
2857 | and its `val' points to some argument or local variable of the function. | |
2858 | On exit to the function, the chain is set back to the value it had on entry. | |
2859 | This way, no link remains in the chain when the stack frame containing the | |
2860 | link disappears. | |
3cfe6dfd | 2861 | |
78edd3b7 JB |
2862 | Every function that can call Feval must protect in this fashion all |
2863 | Lisp_Object variables whose contents will be used again. */ | |
3cfe6dfd JB |
2864 | |
2865 | extern struct gcpro *gcprolist; | |
2866 | ||
2867 | struct gcpro | |
834168ef GM |
2868 | { |
2869 | struct gcpro *next; | |
e2c0561e | 2870 | |
834168ef GM |
2871 | /* Address of first protected variable. */ |
2872 | volatile Lisp_Object *var; | |
e2c0561e | 2873 | |
834168ef | 2874 | /* Number of consecutive protected variables. */ |
f66c7cf8 | 2875 | ptrdiff_t nvars; |
e2c0561e | 2876 | |
4742f524 | 2877 | #ifdef DEBUG_GCPRO |
834168ef | 2878 | int level; |
4742f524 | 2879 | #endif |
834168ef | 2880 | }; |
3cfe6dfd | 2881 | |
1216f5e4 GM |
2882 | /* Values of GC_MARK_STACK during compilation: |
2883 | ||
2884 | 0 Use GCPRO as before | |
2885 | 1 Do the real thing, make GCPROs and UNGCPRO no-ops. | |
2886 | 2 Mark the stack, and check that everything GCPRO'd is | |
2887 | marked. | |
2888 | 3 Mark using GCPRO's, mark stack last, and count how many | |
444b01bb | 2889 | dead objects are kept alive. |
1216f5e4 | 2890 | |
444b01bb PE |
2891 | Formerly, method 0 was used. Currently, method 1 is used unless |
2892 | otherwise specified by hand when building, e.g., | |
2893 | "make CPPFLAGS='-DGC_MARK_STACK=GC_USE_GCPROS_AS_BEFORE'". | |
2894 | Methods 2 and 3 are present mainly to debug the transition from 0 to 1. */ | |
1216f5e4 GM |
2895 | |
2896 | #define GC_USE_GCPROS_AS_BEFORE 0 | |
2897 | #define GC_MAKE_GCPROS_NOOPS 1 | |
2898 | #define GC_MARK_STACK_CHECK_GCPROS 2 | |
2899 | #define GC_USE_GCPROS_CHECK_ZOMBIES 3 | |
2900 | ||
2901 | #ifndef GC_MARK_STACK | |
b948ce8b | 2902 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS |
1216f5e4 GM |
2903 | #endif |
2904 | ||
b286858c SM |
2905 | /* Whether we do the stack marking manually. */ |
2906 | #define BYTE_MARK_STACK !(GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS \ | |
2907 | || GC_MARK_STACK == GC_MARK_STACK_CHECK_GCPROS) | |
2908 | ||
2909 | ||
1216f5e4 GM |
2910 | #if GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS |
2911 | ||
9f0443f9 | 2912 | /* Do something silly with gcproN vars just so gcc shuts up. */ |
656c33dc | 2913 | /* You get warnings from MIPSPro... */ |
9f0443f9 | 2914 | |
dbf31225 PE |
2915 | #define GCPRO1(varname) ((void) gcpro1) |
2916 | #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1) | |
2917 | #define GCPRO3(varname1, varname2, varname3) \ | |
2918 | ((void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2919 | #define GCPRO4(varname1, varname2, varname3, varname4) \ | |
2920 | ((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2921 | #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \ | |
2922 | ((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2923 | #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \ | |
2924 | ((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \ | |
2925 | (void) gcpro1) | |
2926 | #define UNGCPRO ((void) 0) | |
1216f5e4 GM |
2927 | |
2928 | #else /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */ | |
2929 | ||
4742f524 RS |
2930 | #ifndef DEBUG_GCPRO |
2931 | ||
dbf31225 PE |
2932 | #define GCPRO1(varname) \ |
2933 | {gcpro1.next = gcprolist; gcpro1.var = &varname; gcpro1.nvars = 1; \ | |
2934 | gcprolist = &gcpro1; } | |
2935 | ||
2936 | #define GCPRO2(varname1, varname2) \ | |
2937 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2938 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2939 | gcprolist = &gcpro2; } | |
2940 | ||
2941 | #define GCPRO3(varname1, varname2, varname3) \ | |
2942 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2943 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2944 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
2945 | gcprolist = &gcpro3; } | |
2946 | ||
2947 | #define GCPRO4(varname1, varname2, varname3, varname4) \ | |
2948 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2949 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2950 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
2951 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
2952 | gcprolist = &gcpro4; } | |
2953 | ||
2954 | #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \ | |
2955 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2956 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2957 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
2958 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
2959 | gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \ | |
2960 | gcprolist = &gcpro5; } | |
2961 | ||
2962 | #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \ | |
2963 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2964 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2965 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
2966 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
2967 | gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \ | |
2968 | gcpro6.next = &gcpro5; gcpro6.var = &varname6; gcpro6.nvars = 1; \ | |
2969 | gcprolist = &gcpro6; } | |
2970 | ||
2971 | #define UNGCPRO (gcprolist = gcpro1.next) | |
3cfe6dfd | 2972 | |
4742f524 | 2973 | #else |
e98227af | 2974 | |
4742f524 RS |
2975 | extern int gcpro_level; |
2976 | ||
dbf31225 PE |
2977 | #define GCPRO1(varname) \ |
2978 | {gcpro1.next = gcprolist; gcpro1.var = &varname; gcpro1.nvars = 1; \ | |
2979 | gcpro1.level = gcpro_level++; \ | |
2980 | gcprolist = &gcpro1; } | |
2981 | ||
2982 | #define GCPRO2(varname1, varname2) \ | |
2983 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2984 | gcpro1.level = gcpro_level; \ | |
2985 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2986 | gcpro2.level = gcpro_level++; \ | |
2987 | gcprolist = &gcpro2; } | |
2988 | ||
2989 | #define GCPRO3(varname1, varname2, varname3) \ | |
2990 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2991 | gcpro1.level = gcpro_level; \ | |
2992 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
2993 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
2994 | gcpro3.level = gcpro_level++; \ | |
2995 | gcprolist = &gcpro3; } | |
2996 | ||
2997 | #define GCPRO4(varname1, varname2, varname3, varname4) \ | |
2998 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
2999 | gcpro1.level = gcpro_level; \ | |
3000 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
3001 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
3002 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
3003 | gcpro4.level = gcpro_level++; \ | |
3004 | gcprolist = &gcpro4; } | |
3005 | ||
3006 | #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \ | |
3007 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
3008 | gcpro1.level = gcpro_level; \ | |
3009 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
3010 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
3011 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
3012 | gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \ | |
3013 | gcpro5.level = gcpro_level++; \ | |
3014 | gcprolist = &gcpro5; } | |
3015 | ||
3016 | #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \ | |
3017 | {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \ | |
3018 | gcpro1.level = gcpro_level; \ | |
3019 | gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \ | |
3020 | gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \ | |
3021 | gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \ | |
3022 | gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \ | |
3023 | gcpro6.next = &gcpro5; gcpro6.var = &varname6; gcpro6.nvars = 1; \ | |
3024 | gcpro6.level = gcpro_level++; \ | |
3025 | gcprolist = &gcpro6; } | |
3026 | ||
3027 | #define UNGCPRO \ | |
3028 | ((--gcpro_level != gcpro1.level) \ | |
1088b922 | 3029 | ? (emacs_abort (), 0) \ |
dbf31225 | 3030 | : ((gcprolist = gcpro1.next), 0)) |
4742f524 RS |
3031 | |
3032 | #endif /* DEBUG_GCPRO */ | |
1216f5e4 GM |
3033 | #endif /* GC_MARK_STACK != GC_MAKE_GCPROS_NOOPS */ |
3034 | ||
3cfe6dfd | 3035 | |
5db82c9d | 3036 | /* Evaluate expr, UNGCPRO, and then return the value of expr. */ |
c47b8d02 | 3037 | #define RETURN_UNGCPRO(expr) \ |
0868e74e | 3038 | do \ |
c47b8d02 RS |
3039 | { \ |
3040 | Lisp_Object ret_ungc_val; \ | |
3041 | ret_ungc_val = (expr); \ | |
3042 | UNGCPRO; \ | |
3043 | return ret_ungc_val; \ | |
3044 | } \ | |
0868e74e | 3045 | while (0) |
4742f524 RS |
3046 | |
3047 | /* Call staticpro (&var) to protect static variable `var'. */ | |
3048 | ||
383e0970 | 3049 | void staticpro (Lisp_Object *); |
3cfe6dfd | 3050 | \f |
2f69f2ec RS |
3051 | /* Declare a Lisp-callable function. The MAXARGS parameter has the same |
3052 | meaning as in the DEFUN macro, and is used to construct a prototype. */ | |
2f69f2ec RS |
3053 | /* We can use the same trick as in the DEFUN macro to generate the |
3054 | appropriate prototype. */ | |
3055 | #define EXFUN(fnname, maxargs) \ | |
3056 | extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs | |
2f69f2ec | 3057 | |
84575e67 PE |
3058 | #include "globals.h" |
3059 | ||
526a2be7 AS |
3060 | /* Forward declarations for prototypes. */ |
3061 | struct window; | |
3062 | struct frame; | |
2f69f2ec | 3063 | |
086ca913 DA |
3064 | /* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */ |
3065 | ||
3066 | LISP_INLINE void | |
3067 | vcopy (Lisp_Object v, ptrdiff_t offset, Lisp_Object *args, ptrdiff_t count) | |
3068 | { | |
7216e43b | 3069 | eassert (0 <= offset && 0 <= count && offset + count <= ASIZE (v)); |
1b9d9d16 | 3070 | memcpy (XVECTOR (v)->contents + offset, args, count * sizeof *args); |
086ca913 DA |
3071 | } |
3072 | ||
3073 | /* Functions to modify hash tables. */ | |
3074 | ||
e83064be DA |
3075 | LISP_INLINE void |
3076 | set_hash_key_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) | |
4939150c | 3077 | { |
8834c57a | 3078 | gc_aset (h->key_and_value, 2 * idx, val); |
4939150c PE |
3079 | } |
3080 | ||
f162bcc3 | 3081 | LISP_INLINE void |
e83064be | 3082 | set_hash_value_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) |
4939150c | 3083 | { |
8834c57a | 3084 | gc_aset (h->key_and_value, 2 * idx + 1, val); |
4939150c PE |
3085 | } |
3086 | ||
c644523b DA |
3087 | /* Use these functions to set Lisp_Object |
3088 | or pointer slots of struct Lisp_Symbol. */ | |
3089 | ||
c644523b DA |
3090 | LISP_INLINE void |
3091 | set_symbol_function (Lisp_Object sym, Lisp_Object function) | |
3092 | { | |
3093 | XSYMBOL (sym)->function = function; | |
3094 | } | |
3095 | ||
3096 | LISP_INLINE void | |
3097 | set_symbol_plist (Lisp_Object sym, Lisp_Object plist) | |
3098 | { | |
3099 | XSYMBOL (sym)->plist = plist; | |
3100 | } | |
3101 | ||
3102 | LISP_INLINE void | |
3103 | set_symbol_next (Lisp_Object sym, struct Lisp_Symbol *next) | |
3104 | { | |
3105 | XSYMBOL (sym)->next = next; | |
3106 | } | |
3107 | ||
a04e2c62 DA |
3108 | /* Buffer-local (also frame-local) variable access functions. */ |
3109 | ||
3110 | LISP_INLINE int | |
3111 | blv_found (struct Lisp_Buffer_Local_Value *blv) | |
3112 | { | |
3113 | eassert (blv->found == !EQ (blv->defcell, blv->valcell)); | |
3114 | return blv->found; | |
3115 | } | |
3116 | ||
c644523b DA |
3117 | /* Set overlay's property list. */ |
3118 | ||
3119 | LISP_INLINE void | |
3120 | set_overlay_plist (Lisp_Object overlay, Lisp_Object plist) | |
3121 | { | |
3122 | XOVERLAY (overlay)->plist = plist; | |
3123 | } | |
3124 | ||
ad8c997f DA |
3125 | /* Get text properties of S. */ |
3126 | ||
3127 | LISP_INLINE INTERVAL | |
0c94c8d6 | 3128 | string_intervals (Lisp_Object s) |
ad8c997f DA |
3129 | { |
3130 | return XSTRING (s)->intervals; | |
3131 | } | |
3132 | ||
3133 | /* Set text properties of S to I. */ | |
3134 | ||
3135 | LISP_INLINE void | |
0c94c8d6 | 3136 | set_string_intervals (Lisp_Object s, INTERVAL i) |
ad8c997f DA |
3137 | { |
3138 | XSTRING (s)->intervals = i; | |
3139 | } | |
3140 | ||
742af32f PE |
3141 | /* Set a Lisp slot in TABLE to VAL. Most code should use this instead |
3142 | of setting slots directly. */ | |
3143 | ||
742af32f PE |
3144 | LISP_INLINE void |
3145 | set_char_table_defalt (Lisp_Object table, Lisp_Object val) | |
3146 | { | |
3147 | XCHAR_TABLE (table)->defalt = val; | |
3148 | } | |
3149 | LISP_INLINE void | |
742af32f PE |
3150 | set_char_table_purpose (Lisp_Object table, Lisp_Object val) |
3151 | { | |
3152 | XCHAR_TABLE (table)->purpose = val; | |
3153 | } | |
3154 | ||
a098c930 DA |
3155 | /* Set different slots in (sub)character tables. */ |
3156 | ||
3157 | LISP_INLINE void | |
34dabdb7 | 3158 | set_char_table_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
3159 | { |
3160 | eassert (0 <= idx && idx < CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table))); | |
3161 | XCHAR_TABLE (table)->extras[idx] = val; | |
3162 | } | |
3163 | ||
3164 | LISP_INLINE void | |
34dabdb7 | 3165 | set_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
3166 | { |
3167 | eassert (0 <= idx && idx < (1 << CHARTAB_SIZE_BITS_0)); | |
3168 | XCHAR_TABLE (table)->contents[idx] = val; | |
3169 | } | |
3170 | ||
3171 | LISP_INLINE void | |
34dabdb7 | 3172 | set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
3173 | { |
3174 | XSUB_CHAR_TABLE (table)->contents[idx] = val; | |
3175 | } | |
3176 | ||
f6d62986 | 3177 | /* Defined in data.c. */ |
955cbe7b | 3178 | extern Lisp_Object Qnil, Qt, Qquote, Qlambda, Qunbound; |
3cfe6dfd | 3179 | extern Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; |
955cbe7b | 3180 | extern Lisp_Object Qerror, Qquit, Qargs_out_of_range; |
3cfe6dfd | 3181 | extern Lisp_Object Qvoid_variable, Qvoid_function; |
955cbe7b | 3182 | extern Lisp_Object Qinvalid_read_syntax; |
3cfe6dfd | 3183 | extern Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; |
71873e2b | 3184 | extern Lisp_Object Quser_error, Qend_of_file, Qarith_error, Qmark_inactive; |
3cfe6dfd | 3185 | extern Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
6b61353c | 3186 | extern Lisp_Object Qtext_read_only; |
e6cba650 | 3187 | extern Lisp_Object Qinteractive_form; |
99f3388e | 3188 | extern Lisp_Object Qcircular_list; |
955cbe7b | 3189 | extern Lisp_Object Qintegerp, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
3cfe6dfd | 3190 | extern Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
6b61353c | 3191 | extern Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; |
cde20f41 | 3192 | extern Lisp_Object Qbuffer_or_string_p; |
955cbe7b | 3193 | extern Lisp_Object Qfboundp; |
6b61353c KH |
3194 | extern Lisp_Object Qchar_table_p, Qvector_or_char_table_p; |
3195 | ||
3cfe6dfd JB |
3196 | extern Lisp_Object Qcdr; |
3197 | ||
c990426a | 3198 | extern Lisp_Object Qrange_error, Qoverflow_error; |
3cfe6dfd | 3199 | |
6b61353c KH |
3200 | extern Lisp_Object Qfloatp; |
3201 | extern Lisp_Object Qnumberp, Qnumber_or_marker_p; | |
3202 | ||
b52d6985 | 3203 | extern Lisp_Object Qbuffer, Qinteger, Qsymbol; |
3cfe6dfd | 3204 | |
a35ebb81 CY |
3205 | extern Lisp_Object Qfont_spec, Qfont_entity, Qfont_object; |
3206 | ||
5994c183 PE |
3207 | EXFUN (Fbyteorder, 0) ATTRIBUTE_CONST; |
3208 | ||
e7032e7c | 3209 | /* Defined in data.c. */ |
383e0970 | 3210 | extern Lisp_Object indirect_function (Lisp_Object); |
383e0970 | 3211 | extern Lisp_Object find_symbol_value (Lisp_Object); |
2f69f2ec | 3212 | |
be44ca6c PE |
3213 | /* Convert the integer I to an Emacs representation, either the integer |
3214 | itself, or a cons of two or three integers, or if all else fails a float. | |
3215 | I should not have side effects. */ | |
3216 | #define INTEGER_TO_CONS(i) \ | |
3217 | (! FIXNUM_OVERFLOW_P (i) \ | |
3218 | ? make_number (i) \ | |
3219 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \ | |
3220 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \ | |
3221 | && FIXNUM_OVERFLOW_P ((i) >> 16)) \ | |
3222 | ? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \ | |
3223 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \ | |
3224 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \ | |
3225 | && FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \ | |
3226 | ? Fcons (make_number ((i) >> 16 >> 24), \ | |
3227 | Fcons (make_number ((i) >> 16 & 0xffffff), \ | |
3228 | make_number ((i) & 0xffff))) \ | |
3229 | : make_float (i)) | |
3230 | ||
3231 | /* Convert the Emacs representation CONS back to an integer of type | |
3232 | TYPE, storing the result the variable VAR. Signal an error if CONS | |
3233 | is not a valid representation or is out of range for TYPE. */ | |
3234 | #define CONS_TO_INTEGER(cons, type, var) \ | |
3235 | (TYPE_SIGNED (type) \ | |
3236 | ? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \ | |
3237 | : ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type)))) | |
3238 | extern intmax_t cons_to_signed (Lisp_Object, intmax_t, intmax_t); | |
3239 | extern uintmax_t cons_to_unsigned (Lisp_Object, uintmax_t); | |
3240 | ||
ad97b375 | 3241 | extern struct Lisp_Symbol *indirect_variable (struct Lisp_Symbol *); |
845ca893 PE |
3242 | extern _Noreturn void args_out_of_range (Lisp_Object, Lisp_Object); |
3243 | extern _Noreturn void args_out_of_range_3 (Lisp_Object, Lisp_Object, | |
3244 | Lisp_Object); | |
3245 | extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object); | |
ce5b453a | 3246 | extern Lisp_Object do_symval_forwarding (union Lisp_Fwd *); |
de1339b0 | 3247 | extern void set_internal (Lisp_Object, Lisp_Object, Lisp_Object, bool); |
383e0970 | 3248 | extern void syms_of_data (void); |
383e0970 | 3249 | extern void swap_in_global_binding (struct Lisp_Symbol *); |
3cfe6dfd | 3250 | |
a37e10f9 | 3251 | /* Defined in cmds.c */ |
383e0970 J |
3252 | extern void syms_of_cmds (void); |
3253 | extern void keys_of_cmds (void); | |
a37e10f9 | 3254 | |
e7032e7c | 3255 | /* Defined in coding.c. */ |
2f7c71a1 | 3256 | extern Lisp_Object Qcharset; |
d311d28c | 3257 | extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t, |
f10fe38f | 3258 | ptrdiff_t, bool, bool, Lisp_Object); |
383e0970 J |
3259 | extern void init_coding (void); |
3260 | extern void init_coding_once (void); | |
3261 | extern void syms_of_coding (void); | |
1842abb2 | 3262 | |
e7032e7c | 3263 | /* Defined in character.c. */ |
5994c183 | 3264 | EXFUN (Fmax_char, 0) ATTRIBUTE_CONST; |
d311d28c PE |
3265 | extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t); |
3266 | extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t); | |
5994c183 PE |
3267 | extern int multibyte_char_to_unibyte (int) ATTRIBUTE_CONST; |
3268 | extern int multibyte_char_to_unibyte_safe (int) ATTRIBUTE_CONST; | |
2f7c71a1 AS |
3269 | extern void syms_of_character (void); |
3270 | ||
e7032e7c | 3271 | /* Defined in charset.c. */ |
383e0970 J |
3272 | extern void init_charset (void); |
3273 | extern void init_charset_once (void); | |
3274 | extern void syms_of_charset (void); | |
8f924df7 KH |
3275 | /* Structure forward declarations. */ |
3276 | struct charset; | |
5e741a41 | 3277 | |
e7032e7c | 3278 | /* Defined in composite.c. */ |
383e0970 | 3279 | extern void syms_of_composite (void); |
5e741a41 | 3280 | |
e7032e7c | 3281 | /* Defined in syntax.c. */ |
383e0970 J |
3282 | extern void init_syntax_once (void); |
3283 | extern void syms_of_syntax (void); | |
a37e10f9 | 3284 | |
e7032e7c | 3285 | /* Defined in fns.c. */ |
99f3388e | 3286 | extern Lisp_Object QCrehash_size, QCrehash_threshold; |
ca9ce8f2 | 3287 | enum { NEXT_ALMOST_PRIME_LIMIT = 11 }; |
5994c183 PE |
3288 | EXFUN (Fidentity, 1) ATTRIBUTE_CONST; |
3289 | extern EMACS_INT next_almost_prime (EMACS_INT) ATTRIBUTE_CONST; | |
d311d28c | 3290 | extern Lisp_Object larger_vector (Lisp_Object, ptrdiff_t, ptrdiff_t); |
383e0970 | 3291 | extern void sweep_weak_hash_tables (void); |
e6cba650 | 3292 | extern Lisp_Object Qcursor_in_echo_area; |
3cfe6dfd | 3293 | extern Lisp_Object Qstring_lessp; |
53371430 | 3294 | extern Lisp_Object QCsize, QCtest, QCweakness, Qequal, Qeq; |
3cc5a532 | 3295 | EMACS_UINT hash_string (char const *, ptrdiff_t); |
0de4bb68 | 3296 | EMACS_UINT sxhash (Lisp_Object, int); |
b7432bb2 SM |
3297 | Lisp_Object make_hash_table (struct hash_table_test, Lisp_Object, Lisp_Object, |
3298 | Lisp_Object, Lisp_Object); | |
d3411f89 PE |
3299 | ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object, EMACS_UINT *); |
3300 | ptrdiff_t hash_put (struct Lisp_Hash_Table *, Lisp_Object, Lisp_Object, | |
0de4bb68 | 3301 | EMACS_UINT); |
53371430 | 3302 | extern struct hash_table_test hashtest_eql, hashtest_equal; |
404dbd37 | 3303 | |
d311d28c PE |
3304 | extern Lisp_Object substring_both (Lisp_Object, ptrdiff_t, ptrdiff_t, |
3305 | ptrdiff_t, ptrdiff_t); | |
6318cde0 | 3306 | extern Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 | 3307 | extern Lisp_Object do_yes_or_no_p (Lisp_Object); |
383e0970 J |
3308 | extern Lisp_Object concat2 (Lisp_Object, Lisp_Object); |
3309 | extern Lisp_Object concat3 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3310 | extern Lisp_Object nconc2 (Lisp_Object, Lisp_Object); | |
3311 | extern Lisp_Object assq_no_quit (Lisp_Object, Lisp_Object); | |
3312 | extern Lisp_Object assoc_no_quit (Lisp_Object, Lisp_Object); | |
3313 | extern void clear_string_char_byte_cache (void); | |
d311d28c PE |
3314 | extern ptrdiff_t string_char_to_byte (Lisp_Object, ptrdiff_t); |
3315 | extern ptrdiff_t string_byte_to_char (Lisp_Object, ptrdiff_t); | |
383e0970 J |
3316 | extern Lisp_Object string_to_multibyte (Lisp_Object); |
3317 | extern Lisp_Object string_make_unibyte (Lisp_Object); | |
383e0970 | 3318 | extern void syms_of_fns (void); |
2f69f2ec | 3319 | |
e7032e7c | 3320 | /* Defined in floatfns.c. */ |
383e0970 | 3321 | extern double extract_float (Lisp_Object); |
383e0970 | 3322 | extern void syms_of_floatfns (void); |
3d608a86 | 3323 | extern Lisp_Object fmod_float (Lisp_Object x, Lisp_Object y); |
3cfe6dfd | 3324 | |
e7032e7c | 3325 | /* Defined in fringe.c. */ |
383e0970 J |
3326 | extern void syms_of_fringe (void); |
3327 | extern void init_fringe (void); | |
524c7aa6 PE |
3328 | #ifdef HAVE_WINDOW_SYSTEM |
3329 | extern void mark_fringe_data (void); | |
383e0970 | 3330 | extern void init_fringe_once (void); |
524c7aa6 | 3331 | #endif /* HAVE_WINDOW_SYSTEM */ |
6b61353c | 3332 | |
e7032e7c | 3333 | /* Defined in image.c. */ |
955cbe7b PE |
3334 | extern Lisp_Object QCascent, QCmargin, QCrelief; |
3335 | extern Lisp_Object QCconversion; | |
0766b489 | 3336 | extern int x_bitmap_mask (struct frame *, ptrdiff_t); |
aa15c6bb | 3337 | extern void reset_image_types (void); |
383e0970 | 3338 | extern void syms_of_image (void); |
6b61353c | 3339 | |
e7032e7c | 3340 | /* Defined in insdel.c. */ |
b8b31967 | 3341 | extern Lisp_Object Qinhibit_modification_hooks; |
d311d28c | 3342 | extern void move_gap_both (ptrdiff_t, ptrdiff_t); |
845ca893 | 3343 | extern _Noreturn void buffer_overflow (void); |
d311d28c | 3344 | extern void make_gap (ptrdiff_t); |
eefd7278 | 3345 | extern void make_gap_1 (struct buffer *, ptrdiff_t); |
d311d28c | 3346 | extern ptrdiff_t copy_text (const unsigned char *, unsigned char *, |
a08d4ba7 | 3347 | ptrdiff_t, bool, bool); |
ae19ba7c | 3348 | extern int count_combining_before (const unsigned char *, |
d311d28c | 3349 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
ae19ba7c | 3350 | extern int count_combining_after (const unsigned char *, |
d311d28c PE |
3351 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3352 | extern void insert (const char *, ptrdiff_t); | |
3353 | extern void insert_and_inherit (const char *, ptrdiff_t); | |
d311d28c | 3354 | extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3355 | bool, bool, bool); |
8a44e6d1 | 3356 | extern void insert_from_gap (ptrdiff_t, ptrdiff_t, bool text_at_gap_tail); |
d311d28c | 3357 | extern void insert_from_string (Lisp_Object, ptrdiff_t, ptrdiff_t, |
a08d4ba7 PE |
3358 | ptrdiff_t, ptrdiff_t, bool); |
3359 | extern void insert_from_buffer (struct buffer *, ptrdiff_t, ptrdiff_t, bool); | |
ae19ba7c SM |
3360 | extern void insert_char (int); |
3361 | extern void insert_string (const char *); | |
d311d28c PE |
3362 | extern void insert_before_markers (const char *, ptrdiff_t); |
3363 | extern void insert_before_markers_and_inherit (const char *, ptrdiff_t); | |
3364 | extern void insert_from_string_before_markers (Lisp_Object, ptrdiff_t, | |
3365 | ptrdiff_t, ptrdiff_t, | |
a08d4ba7 | 3366 | ptrdiff_t, bool); |
d311d28c | 3367 | extern void del_range (ptrdiff_t, ptrdiff_t); |
a08d4ba7 PE |
3368 | extern Lisp_Object del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool); |
3369 | extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool); | |
3370 | extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool); | |
d311d28c | 3371 | extern Lisp_Object del_range_2 (ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3372 | ptrdiff_t, ptrdiff_t, bool); |
00012b86 | 3373 | extern void modify_text (ptrdiff_t, ptrdiff_t); |
d311d28c | 3374 | extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
00012b86 | 3375 | extern void prepare_to_modify_buffer_1 (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
d311d28c PE |
3376 | extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3377 | extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t, | |
3378 | ptrdiff_t, ptrdiff_t); | |
3379 | extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t, | |
3380 | ptrdiff_t, ptrdiff_t); | |
a08d4ba7 | 3381 | extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object, bool, bool, bool); |
d311d28c | 3382 | extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3383 | const char *, ptrdiff_t, ptrdiff_t, bool); |
ae19ba7c | 3384 | extern void syms_of_insdel (void); |
c98adc1b | 3385 | |
e7032e7c | 3386 | /* Defined in dispnew.c. */ |
9e4bf381 PE |
3387 | #if (defined PROFILING \ |
3388 | && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__)) | |
845ca893 | 3389 | _Noreturn void __executable_start (void); |
9e4bf381 | 3390 | #endif |
37b793e6 | 3391 | extern Lisp_Object selected_frame; |
7684e57b | 3392 | extern Lisp_Object Vwindow_system; |
59ea14cd | 3393 | extern Lisp_Object sit_for (Lisp_Object, bool, int); |
383e0970 J |
3394 | extern void init_display (void); |
3395 | extern void syms_of_display (void); | |
1747fb16 | 3396 | |
e7032e7c | 3397 | /* Defined in xdisp.c. */ |
c6ae41f3 | 3398 | extern Lisp_Object Qinhibit_point_motion_hooks; |
016c7a15 | 3399 | extern Lisp_Object Qinhibit_redisplay, Qdisplay; |
99f3388e | 3400 | extern Lisp_Object Qmenu_bar_update_hook; |
29208e82 | 3401 | extern Lisp_Object Qwindow_scroll_functions; |
99f3388e | 3402 | extern Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
8a52f00a | 3403 | extern Lisp_Object Qimage, Qtext, Qboth, Qboth_horiz, Qtext_image_horiz; |
89dc303e | 3404 | extern Lisp_Object Qspace, Qcenter, QCalign_to; |
99f3388e DN |
3405 | extern Lisp_Object Qbar, Qhbar, Qbox, Qhollow; |
3406 | extern Lisp_Object Qleft_margin, Qright_margin; | |
b932f8b1 | 3407 | extern Lisp_Object Qglyphless_char; |
89dc303e | 3408 | extern Lisp_Object QCdata, QCfile; |
99f3388e | 3409 | extern Lisp_Object QCmap; |
e6cba650 | 3410 | extern Lisp_Object Qrisky_local_variable; |
b932f8b1 | 3411 | extern struct frame *last_glyphless_glyph_frame; |
d311d28c | 3412 | extern int last_glyphless_glyph_face_id; |
b932f8b1 | 3413 | extern int last_glyphless_glyph_merged_face_id; |
99f3388e | 3414 | extern int noninteractive_need_newline; |
986113df | 3415 | extern Lisp_Object echo_area_buffer[2]; |
89dc303e | 3416 | extern void add_to_log (const char *, Lisp_Object, Lisp_Object); |
383e0970 J |
3417 | extern void check_message_stack (void); |
3418 | extern void setup_echo_area_for_printing (int); | |
fce31d69 | 3419 | extern bool push_message (void); |
27e498e6 | 3420 | extern void pop_message_unwind (void); |
383e0970 | 3421 | extern Lisp_Object restore_message_unwind (Lisp_Object); |
383e0970 J |
3422 | extern void restore_message (void); |
3423 | extern Lisp_Object current_message (void); | |
383e0970 | 3424 | extern void clear_message (int, int); |
1e973bc7 | 3425 | extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
a8fe7202 AS |
3426 | extern void message1 (const char *); |
3427 | extern void message1_nolog (const char *); | |
b09cca6a SM |
3428 | extern void message3 (Lisp_Object); |
3429 | extern void message3_nolog (Lisp_Object); | |
0063fdb1 | 3430 | extern void message_dolog (const char *, ptrdiff_t, bool, bool); |
a8fe7202 | 3431 | extern void message_with_string (const char *, Lisp_Object, int); |
383e0970 J |
3432 | extern void message_log_maybe_newline (void); |
3433 | extern void update_echo_area (void); | |
d311d28c | 3434 | extern void truncate_echo_area (ptrdiff_t); |
383e0970 | 3435 | extern void redisplay (void); |
383e0970 J |
3436 | extern void redisplay_preserve_echo_area (int); |
3437 | extern void prepare_menu_bars (void); | |
c4bf5bc3 | 3438 | |
383e0970 J |
3439 | void set_frame_cursor_types (struct frame *, Lisp_Object); |
3440 | extern void syms_of_xdisp (void); | |
3441 | extern void init_xdisp (void); | |
3442 | extern Lisp_Object safe_eval (Lisp_Object); | |
d311d28c | 3443 | extern int pos_visible_p (struct window *, ptrdiff_t, int *, |
383e0970 | 3444 | int *, int *, int *, int *, int *); |
c98adc1b | 3445 | |
e7032e7c | 3446 | /* Defined in xsettings.c. */ |
383e0970 | 3447 | extern void syms_of_xsettings (void); |
637fa988 | 3448 | |
15b0ced5 | 3449 | /* Defined in vm-limit.c. */ |
261cb4bb | 3450 | extern void memory_warnings (void *, void (*warnfun) (const char *)); |
9043c90a | 3451 | |
e7032e7c | 3452 | /* Defined in alloc.c. */ |
383e0970 | 3453 | extern void check_pure_size (void); |
73ebd38f | 3454 | extern void free_misc (Lisp_Object); |
413d18e7 | 3455 | extern void allocate_string_data (struct Lisp_String *, EMACS_INT, EMACS_INT); |
a8fe7202 | 3456 | extern void malloc_warning (const char *); |
845ca893 PE |
3457 | extern _Noreturn void memory_full (size_t); |
3458 | extern _Noreturn void buffer_memory_full (ptrdiff_t); | |
fce31d69 | 3459 | extern bool survives_gc_p (Lisp_Object); |
383e0970 | 3460 | extern void mark_object (Lisp_Object); |
69003fd8 | 3461 | #if defined REL_ALLOC && !defined SYSTEM_MALLOC |
84dfc8a7 | 3462 | extern void refill_memory_reserve (void); |
69003fd8 | 3463 | #endif |
50c77428 | 3464 | extern const char *pending_malloc_warning; |
9730daca | 3465 | extern Lisp_Object zero_vector; |
89dc303e | 3466 | extern Lisp_Object *stack_base; |
dac616ff DA |
3467 | extern EMACS_INT consing_since_gc; |
3468 | extern EMACS_INT gc_relative_threshold; | |
3469 | extern EMACS_INT memory_full_cons_threshold; | |
2f7c71a1 AS |
3470 | extern Lisp_Object list1 (Lisp_Object); |
3471 | extern Lisp_Object list2 (Lisp_Object, Lisp_Object); | |
3472 | extern Lisp_Object list3 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3473 | extern Lisp_Object list4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3474 | extern Lisp_Object list5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, | |
3475 | Lisp_Object); | |
3438fe21 | 3476 | enum constype {CONSTYPE_HEAP, CONSTYPE_PURE}; |
694b6c97 | 3477 | extern Lisp_Object listn (enum constype, ptrdiff_t, Lisp_Object, ...); |
3de717bd DA |
3478 | |
3479 | /* Build a frequently used 2/3/4-integer lists. */ | |
3480 | ||
3481 | LISP_INLINE Lisp_Object | |
3482 | list2i (EMACS_INT x, EMACS_INT y) | |
3483 | { | |
3484 | return list2 (make_number (x), make_number (y)); | |
3485 | } | |
3486 | ||
3487 | LISP_INLINE Lisp_Object | |
3488 | list3i (EMACS_INT x, EMACS_INT y, EMACS_INT w) | |
3489 | { | |
3490 | return list3 (make_number (x), make_number (y), make_number (w)); | |
3491 | } | |
3492 | ||
3493 | LISP_INLINE Lisp_Object | |
3494 | list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h) | |
3495 | { | |
3496 | return list4 (make_number (x), make_number (y), | |
3497 | make_number (w), make_number (h)); | |
3498 | } | |
3499 | ||
845ca893 | 3500 | extern _Noreturn void string_overflow (void); |
d311d28c | 3501 | extern Lisp_Object make_string (const char *, ptrdiff_t); |
26bccfae PE |
3502 | extern Lisp_Object make_formatted_string (char *, const char *, ...) |
3503 | ATTRIBUTE_FORMAT_PRINTF (2, 3); | |
d311d28c | 3504 | extern Lisp_Object make_unibyte_string (const char *, ptrdiff_t); |
d7ea76b4 DA |
3505 | |
3506 | /* Make unibyte string from C string when the length isn't known. */ | |
3507 | ||
f162bcc3 | 3508 | LISP_INLINE Lisp_Object |
d7ea76b4 DA |
3509 | build_unibyte_string (const char *str) |
3510 | { | |
3511 | return make_unibyte_string (str, strlen (str)); | |
3512 | } | |
3513 | ||
d311d28c | 3514 | extern Lisp_Object make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t); |
383e0970 | 3515 | extern Lisp_Object make_event_array (int, Lisp_Object *); |
413d18e7 EZ |
3516 | extern Lisp_Object make_uninit_string (EMACS_INT); |
3517 | extern Lisp_Object make_uninit_multibyte_string (EMACS_INT, EMACS_INT); | |
d311d28c | 3518 | extern Lisp_Object make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t); |
14162469 | 3519 | extern Lisp_Object make_specified_string (const char *, |
fce31d69 PE |
3520 | ptrdiff_t, ptrdiff_t, bool); |
3521 | extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool); | |
2a0213a6 DA |
3522 | extern Lisp_Object make_pure_c_string (const char *, ptrdiff_t); |
3523 | ||
3524 | /* Make a string allocated in pure space, use STR as string data. */ | |
3525 | ||
f162bcc3 | 3526 | LISP_INLINE Lisp_Object |
2a0213a6 DA |
3527 | build_pure_c_string (const char *str) |
3528 | { | |
3529 | return make_pure_c_string (str, strlen (str)); | |
3530 | } | |
1130ecfc DA |
3531 | |
3532 | /* Make a string from the data at STR, treating it as multibyte if the | |
3533 | data warrants. */ | |
3534 | ||
f162bcc3 | 3535 | LISP_INLINE Lisp_Object |
1130ecfc DA |
3536 | build_string (const char *str) |
3537 | { | |
3538 | return make_string (str, strlen (str)); | |
3539 | } | |
3540 | ||
383e0970 | 3541 | extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object); |
3017f87f | 3542 | extern void make_byte_code (struct Lisp_Vector *); |
3d80c99f | 3543 | extern Lisp_Object Qautomatic_gc; |
7f73dc9d | 3544 | extern Lisp_Object Qchar_table_extra_slots; |
383e0970 | 3545 | extern struct Lisp_Vector *allocate_vector (EMACS_INT); |
25721f5b | 3546 | |
8b17a8b9 | 3547 | /* Make an uninitialized vector for SIZE objects. NOTE: you must |
25721f5b DA |
3548 | be sure that GC cannot happen until the vector is completely |
3549 | initialized. E.g. the following code is likely to crash: | |
3550 | ||
3551 | v = make_uninit_vector (3); | |
3552 | ASET (v, 0, obj0); | |
3553 | ASET (v, 1, Ffunction_can_gc ()); | |
3554 | ASET (v, 2, obj1); */ | |
3555 | ||
3556 | LISP_INLINE Lisp_Object | |
3557 | make_uninit_vector (ptrdiff_t size) | |
3558 | { | |
3559 | Lisp_Object v; | |
3560 | struct Lisp_Vector *p; | |
3561 | ||
3562 | p = allocate_vector (size); | |
3563 | XSETVECTOR (v, p); | |
3564 | return v; | |
3565 | } | |
3566 | ||
914adc42 | 3567 | extern struct Lisp_Vector *allocate_pseudovector (int, int, enum pvec_type); |
30f95089 SM |
3568 | #define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \ |
3569 | ((typ*) \ | |
3570 | allocate_pseudovector \ | |
3571 | (VECSIZE (typ), PSEUDOVECSIZE (typ, field), tag)) | |
383e0970 J |
3572 | extern struct Lisp_Hash_Table *allocate_hash_table (void); |
3573 | extern struct window *allocate_window (void); | |
3574 | extern struct frame *allocate_frame (void); | |
3575 | extern struct Lisp_Process *allocate_process (void); | |
3576 | extern struct terminal *allocate_terminal (void); | |
fce31d69 PE |
3577 | extern bool gc_in_progress; |
3578 | extern bool abort_on_gc; | |
383e0970 J |
3579 | extern Lisp_Object make_float (double); |
3580 | extern void display_malloc_warning (void); | |
d311d28c | 3581 | extern ptrdiff_t inhibit_garbage_collection (void); |
1396ac86 PE |
3582 | extern Lisp_Object make_save_int_int_int (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3583 | extern Lisp_Object make_save_obj_obj_obj_obj (Lisp_Object, Lisp_Object, | |
3584 | Lisp_Object, Lisp_Object); | |
3585 | extern Lisp_Object make_save_ptr (void *); | |
3586 | extern Lisp_Object make_save_ptr_int (void *, ptrdiff_t); | |
3587 | extern Lisp_Object make_save_ptr_ptr (void *, void *); | |
3588 | extern Lisp_Object make_save_funcptr_ptr_obj (void (*) (void), void *, | |
3589 | Lisp_Object); | |
3590 | extern Lisp_Object make_save_memory (Lisp_Object *, ptrdiff_t); | |
27e498e6 | 3591 | extern void free_save_value (Lisp_Object); |
d7a7fda3 | 3592 | extern Lisp_Object build_overlay (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 J |
3593 | extern void free_marker (Lisp_Object); |
3594 | extern void free_cons (struct Lisp_Cons *); | |
3595 | extern void init_alloc_once (void); | |
3596 | extern void init_alloc (void); | |
3597 | extern void syms_of_alloc (void); | |
3598 | extern struct buffer * allocate_buffer (void); | |
3599 | extern int valid_lisp_object_p (Lisp_Object); | |
7e63e0c3 DA |
3600 | #ifdef GC_CHECK_CONS_LIST |
3601 | extern void check_cons_list (void); | |
3602 | #else | |
84575e67 | 3603 | LISP_INLINE void (check_cons_list) (void) { lisp_h_check_cons_list (); } |
7e63e0c3 | 3604 | #endif |
3cfe6dfd | 3605 | |
a041960a | 3606 | #ifdef REL_ALLOC |
e7032e7c | 3607 | /* Defined in ralloc.c. */ |
a041960a PE |
3608 | extern void *r_alloc (void **, size_t); |
3609 | extern void r_alloc_free (void **); | |
3610 | extern void *r_re_alloc (void **, size_t); | |
3611 | extern void r_alloc_reset_variable (void **, void **); | |
57b81a9f | 3612 | extern void r_alloc_inhibit_buffer_relocation (int); |
a041960a PE |
3613 | #endif |
3614 | ||
e7032e7c | 3615 | /* Defined in chartab.c. */ |
383e0970 | 3616 | extern Lisp_Object copy_char_table (Lisp_Object); |
383e0970 J |
3617 | extern Lisp_Object char_table_ref (Lisp_Object, int); |
3618 | extern Lisp_Object char_table_ref_and_range (Lisp_Object, int, | |
3619 | int *, int *); | |
e757f1c6 PE |
3620 | extern void char_table_set (Lisp_Object, int, Lisp_Object); |
3621 | extern void char_table_set_range (Lisp_Object, int, int, Lisp_Object); | |
383e0970 J |
3622 | extern int char_table_translate (Lisp_Object, int); |
3623 | extern void map_char_table (void (*) (Lisp_Object, Lisp_Object, | |
3624 | Lisp_Object), | |
3625 | Lisp_Object, Lisp_Object, Lisp_Object); | |
e6cba650 DN |
3626 | extern void map_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object), |
3627 | Lisp_Object, Lisp_Object, | |
3628 | Lisp_Object, struct charset *, | |
3629 | unsigned, unsigned); | |
5cc7f7af | 3630 | extern Lisp_Object uniprop_table (Lisp_Object); |
383e0970 | 3631 | extern void syms_of_chartab (void); |
1842abb2 | 3632 | |
e7032e7c | 3633 | /* Defined in print.c. */ |
3cfe6dfd | 3634 | extern Lisp_Object Vprin1_to_string_buffer; |
42c8bc9b | 3635 | extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE; |
29208e82 | 3636 | extern Lisp_Object Qstandard_output; |
9453ea7b | 3637 | extern Lisp_Object Qexternal_debugging_output; |
383e0970 | 3638 | extern void temp_output_buffer_setup (const char *); |
29208e82 | 3639 | extern int print_level; |
3cfe6dfd | 3640 | extern Lisp_Object Qprint_escape_newlines; |
a8fe7202 | 3641 | extern void write_string (const char *, int); |
a8fe7202 AS |
3642 | extern void print_error_message (Lisp_Object, Lisp_Object, const char *, |
3643 | Lisp_Object); | |
526a2be7 | 3644 | extern Lisp_Object internal_with_output_to_temp_buffer |
383e0970 | 3645 | (const char *, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
03a660a6 | 3646 | enum FLOAT_TO_STRING_BUFSIZE { FLOAT_TO_STRING_BUFSIZE = 350 }; |
99027bdd | 3647 | extern int float_to_string (char *, double); |
cf4bb06d | 3648 | extern void init_print_once (void); |
383e0970 | 3649 | extern void syms_of_print (void); |
526a2be7 | 3650 | |
e7032e7c | 3651 | /* Defined in doprnt.c. */ |
c2d1e36d PE |
3652 | extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *, |
3653 | va_list); | |
62f19c19 PE |
3654 | extern ptrdiff_t esprintf (char *, char const *, ...) |
3655 | ATTRIBUTE_FORMAT_PRINTF (2, 3); | |
62f19c19 PE |
3656 | extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, |
3657 | char const *, ...) | |
3658 | ATTRIBUTE_FORMAT_PRINTF (5, 6); | |
3659 | extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, | |
3660 | char const *, va_list) | |
3661 | ATTRIBUTE_FORMAT_PRINTF (5, 0); | |
e6c3da20 | 3662 | |
ea6c7ae6 | 3663 | /* Defined in lread.c. */ |
3cfe6dfd | 3664 | extern Lisp_Object Qvariable_documentation, Qstandard_input; |
99f3388e | 3665 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
a411ac43 | 3666 | extern Lisp_Object Qlexical_binding; |
383e0970 | 3667 | extern Lisp_Object check_obarray (Lisp_Object); |
e8df9267 DA |
3668 | extern Lisp_Object intern_1 (const char *, ptrdiff_t); |
3669 | extern Lisp_Object intern_c_string_1 (const char *, ptrdiff_t); | |
d311d28c | 3670 | extern Lisp_Object oblookup (Lisp_Object, const char *, ptrdiff_t, ptrdiff_t); |
84575e67 PE |
3671 | LISP_INLINE void |
3672 | LOADHIST_ATTACH (Lisp_Object x) | |
3673 | { | |
3674 | if (initialized) | |
3675 | Vcurrent_load_list = Fcons (x, Vcurrent_load_list); | |
3676 | } | |
383e0970 J |
3677 | extern int openp (Lisp_Object, Lisp_Object, Lisp_Object, |
3678 | Lisp_Object *, Lisp_Object); | |
7cded46f | 3679 | extern Lisp_Object string_to_number (char const *, int, bool); |
383e0970 J |
3680 | extern void map_obarray (Lisp_Object, void (*) (Lisp_Object, Lisp_Object), |
3681 | Lisp_Object); | |
a8fe7202 | 3682 | extern void dir_warning (const char *, Lisp_Object); |
383e0970 J |
3683 | extern void init_obarray (void); |
3684 | extern void init_lread (void); | |
3685 | extern void syms_of_lread (void); | |
3cfe6dfd | 3686 | |
f162bcc3 | 3687 | LISP_INLINE Lisp_Object |
e8df9267 DA |
3688 | intern (const char *str) |
3689 | { | |
3690 | return intern_1 (str, strlen (str)); | |
3691 | } | |
3692 | ||
f162bcc3 | 3693 | LISP_INLINE Lisp_Object |
e8df9267 DA |
3694 | intern_c_string (const char *str) |
3695 | { | |
3696 | return intern_c_string_1 (str, strlen (str)); | |
3697 | } | |
3698 | ||
f6d62986 | 3699 | /* Defined in eval.c. */ |
61b108cc | 3700 | extern Lisp_Object Qautoload, Qexit, Qinteractive, Qcommandp, Qmacro; |
a411ac43 | 3701 | extern Lisp_Object Qinhibit_quit, Qinternal_interpreter_environment, Qclosure; |
955cbe7b | 3702 | extern Lisp_Object Qand_rest; |
3cfe6dfd | 3703 | extern Lisp_Object Vautoload_queue; |
fab88cb7 | 3704 | extern Lisp_Object Vsignaling_function; |
d1f55f16 | 3705 | extern Lisp_Object inhibit_lisp_code; |
244ed907 PE |
3706 | #if BYTE_MARK_STACK |
3707 | extern struct catchtag *catchlist; | |
3708 | extern struct handler *handlerlist; | |
3709 | #endif | |
f1b6e5fc SM |
3710 | /* To run a normal hook, use the appropriate function from the list below. |
3711 | The calling convention: | |
3712 | ||
846d69ac | 3713 | if (!NILP (Vrun_hooks)) |
f1b6e5fc SM |
3714 | call1 (Vrun_hooks, Qmy_funny_hook); |
3715 | ||
3716 | should no longer be used. */ | |
3cfe6dfd | 3717 | extern Lisp_Object Vrun_hooks; |
383e0970 | 3718 | extern void run_hook_with_args_2 (Lisp_Object, Lisp_Object, Lisp_Object); |
f66c7cf8 | 3719 | extern Lisp_Object run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args, |
f6d62986 | 3720 | Lisp_Object (*funcall) |
f66c7cf8 | 3721 | (ptrdiff_t nargs, Lisp_Object *args)); |
845ca893 PE |
3722 | extern _Noreturn void xsignal (Lisp_Object, Lisp_Object); |
3723 | extern _Noreturn void xsignal0 (Lisp_Object); | |
3724 | extern _Noreturn void xsignal1 (Lisp_Object, Lisp_Object); | |
3725 | extern _Noreturn void xsignal2 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3726 | extern _Noreturn void xsignal3 (Lisp_Object, Lisp_Object, Lisp_Object, | |
3727 | Lisp_Object); | |
3728 | extern _Noreturn void signal_error (const char *, Lisp_Object); | |
defb1411 | 3729 | extern Lisp_Object eval_sub (Lisp_Object form); |
383e0970 J |
3730 | extern Lisp_Object apply1 (Lisp_Object, Lisp_Object); |
3731 | extern Lisp_Object call0 (Lisp_Object); | |
3732 | extern Lisp_Object call1 (Lisp_Object, Lisp_Object); | |
3733 | extern Lisp_Object call2 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3734 | extern Lisp_Object call3 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3735 | extern Lisp_Object call4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3736 | extern Lisp_Object call5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3737 | extern Lisp_Object call6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3738 | extern Lisp_Object call7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
383e0970 J |
3739 | extern Lisp_Object internal_catch (Lisp_Object, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
3740 | extern Lisp_Object internal_lisp_condition_case (Lisp_Object, Lisp_Object, Lisp_Object); | |
3741 | extern Lisp_Object internal_condition_case (Lisp_Object (*) (void), Lisp_Object, Lisp_Object (*) (Lisp_Object)); | |
3742 | extern Lisp_Object internal_condition_case_1 (Lisp_Object (*) (Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object)); | |
3743 | extern Lisp_Object internal_condition_case_2 (Lisp_Object (*) (Lisp_Object, Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object)); | |
cc92c454 SM |
3744 | extern Lisp_Object internal_condition_case_n |
3745 | (Lisp_Object (*) (ptrdiff_t, Lisp_Object *), ptrdiff_t, Lisp_Object *, | |
3746 | Lisp_Object, Lisp_Object (*) (Lisp_Object, ptrdiff_t, Lisp_Object *)); | |
383e0970 | 3747 | extern void specbind (Lisp_Object, Lisp_Object); |
27e498e6 | 3748 | extern void record_unwind_protect (void (*) (Lisp_Object), Lisp_Object); |
27e498e6 | 3749 | extern void record_unwind_protect_ptr (void (*) (void *), void *); |
94fcd171 | 3750 | extern void record_unwind_protect_int (void (*) (int), int); |
27e498e6 | 3751 | extern void record_unwind_protect_void (void (*) (void)); |
f4b1eb36 | 3752 | extern void record_unwind_protect_nothing (void); |
a0931322 | 3753 | extern void clear_unwind_protect (ptrdiff_t); |
94fcd171 | 3754 | extern void set_unwind_protect (ptrdiff_t, void (*) (Lisp_Object), Lisp_Object); |
a0931322 | 3755 | extern void set_unwind_protect_ptr (ptrdiff_t, void (*) (void *), void *); |
d311d28c | 3756 | extern Lisp_Object unbind_to (ptrdiff_t, Lisp_Object); |
845ca893 PE |
3757 | extern _Noreturn void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
3758 | extern _Noreturn void verror (const char *, va_list) | |
3759 | ATTRIBUTE_FORMAT_PRINTF (1, 0); | |
27e498e6 | 3760 | extern void un_autoload (Lisp_Object); |
7f7e0167 | 3761 | extern Lisp_Object call_debugger (Lisp_Object arg); |
383e0970 | 3762 | extern void init_eval_once (void); |
6cd7a139 | 3763 | extern Lisp_Object safe_call (ptrdiff_t, Lisp_Object, ...); |
383e0970 | 3764 | extern Lisp_Object safe_call1 (Lisp_Object, Lisp_Object); |
58555d81 | 3765 | extern Lisp_Object safe_call2 (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 J |
3766 | extern void init_eval (void); |
3767 | extern void syms_of_eval (void); | |
27e498e6 | 3768 | extern void unwind_body (Lisp_Object); |
2f592f95 SM |
3769 | extern void record_in_backtrace (Lisp_Object function, |
3770 | Lisp_Object *args, ptrdiff_t nargs); | |
3771 | extern void mark_specpdl (void); | |
3772 | extern void get_backtrace (Lisp_Object array); | |
3773 | Lisp_Object backtrace_top_function (void); | |
3774 | extern bool let_shadows_buffer_binding_p (struct Lisp_Symbol *symbol); | |
3775 | extern bool let_shadows_global_binding_p (Lisp_Object symbol); | |
3776 | ||
3cfe6dfd | 3777 | |
7abaf5cc | 3778 | /* Defined in editfns.c. */ |
e6cba650 | 3779 | extern Lisp_Object Qfield; |
383e0970 | 3780 | extern void insert1 (Lisp_Object); |
a8fe7202 | 3781 | extern Lisp_Object format2 (const char *, Lisp_Object, Lisp_Object); |
383e0970 J |
3782 | extern Lisp_Object save_excursion_save (void); |
3783 | extern Lisp_Object save_restriction_save (void); | |
27e498e6 PE |
3784 | extern void save_excursion_restore (Lisp_Object); |
3785 | extern void save_restriction_restore (Lisp_Object); | |
845ca893 | 3786 | extern _Noreturn void time_overflow (void); |
a08d4ba7 | 3787 | extern Lisp_Object make_buffer_string (ptrdiff_t, ptrdiff_t, bool); |
d311d28c | 3788 | extern Lisp_Object make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3789 | ptrdiff_t, bool); |
383e0970 J |
3790 | extern void init_editfns (void); |
3791 | extern void syms_of_editfns (void); | |
a8fe7202 | 3792 | extern void set_time_zone_rule (const char *); |
3cfe6dfd | 3793 | |
7abaf5cc | 3794 | /* Defined in buffer.c. */ |
37ef52bb | 3795 | extern bool mouse_face_overlay_overlaps (Lisp_Object); |
845ca893 | 3796 | extern _Noreturn void nsberror (Lisp_Object); |
d311d28c PE |
3797 | extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t); |
3798 | extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t); | |
3799 | extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t); | |
37ef52bb | 3800 | extern void report_overlay_modification (Lisp_Object, Lisp_Object, bool, |
383e0970 | 3801 | Lisp_Object, Lisp_Object, Lisp_Object); |
37ef52bb | 3802 | extern bool overlay_touches_p (ptrdiff_t); |
9397e56f | 3803 | extern Lisp_Object other_buffer_safely (Lisp_Object); |
383e0970 | 3804 | extern Lisp_Object get_truename_buffer (Lisp_Object); |
383e0970 J |
3805 | extern void init_buffer_once (void); |
3806 | extern void init_buffer (void); | |
3807 | extern void syms_of_buffer (void); | |
3808 | extern void keys_of_buffer (void); | |
3cfe6dfd | 3809 | |
7abaf5cc | 3810 | /* Defined in marker.c. */ |
3cfe6dfd | 3811 | |
d311d28c PE |
3812 | extern ptrdiff_t marker_position (Lisp_Object); |
3813 | extern ptrdiff_t marker_byte_position (Lisp_Object); | |
383e0970 | 3814 | extern void clear_charpos_cache (struct buffer *); |
d311d28c PE |
3815 | extern ptrdiff_t buf_charpos_to_bytepos (struct buffer *, ptrdiff_t); |
3816 | extern ptrdiff_t buf_bytepos_to_charpos (struct buffer *, ptrdiff_t); | |
eeaea515 | 3817 | extern void unchain_marker (struct Lisp_Marker *marker); |
383e0970 | 3818 | extern Lisp_Object set_marker_restricted (Lisp_Object, Lisp_Object, Lisp_Object); |
d311d28c | 3819 | extern Lisp_Object set_marker_both (Lisp_Object, Lisp_Object, ptrdiff_t, ptrdiff_t); |
383e0970 | 3820 | extern Lisp_Object set_marker_restricted_both (Lisp_Object, Lisp_Object, |
eeaea515 | 3821 | ptrdiff_t, ptrdiff_t); |
657924ff | 3822 | extern Lisp_Object build_marker (struct buffer *, ptrdiff_t, ptrdiff_t); |
383e0970 | 3823 | extern void syms_of_marker (void); |
3cfe6dfd | 3824 | |
e7032e7c | 3825 | /* Defined in fileio.c. */ |
3cfe6dfd JB |
3826 | |
3827 | extern Lisp_Object Qfile_error; | |
86dfb7a8 | 3828 | extern Lisp_Object Qfile_notify_error; |
99f3388e | 3829 | extern Lisp_Object Qfile_exists_p; |
e6cba650 DN |
3830 | extern Lisp_Object Qfile_directory_p; |
3831 | extern Lisp_Object Qinsert_file_contents; | |
7684e57b | 3832 | extern Lisp_Object Qfile_name_history; |
383e0970 | 3833 | extern Lisp_Object expand_and_dir_to_file (Lisp_Object, Lisp_Object); |
94fcd171 PE |
3834 | extern Lisp_Object write_region (Lisp_Object, Lisp_Object, Lisp_Object, |
3835 | Lisp_Object, Lisp_Object, Lisp_Object, | |
3836 | Lisp_Object, int); | |
e7032e7c | 3837 | EXFUN (Fread_file_name, 6); /* Not a normal DEFUN. */ |
27e498e6 | 3838 | extern void close_file_unwind (int); |
f4b1eb36 | 3839 | extern void fclose_unwind (void *); |
27e498e6 | 3840 | extern void restore_point_unwind (Lisp_Object); |
a773ed9a | 3841 | extern _Noreturn void report_file_errno (const char *, Lisp_Object, int); |
845ca893 | 3842 | extern _Noreturn void report_file_error (const char *, Lisp_Object); |
7d80ea23 | 3843 | extern bool internal_delete_file (Lisp_Object); |
8654f9d7 | 3844 | extern Lisp_Object emacs_readlinkat (int, const char *); |
73dcdb9f PE |
3845 | extern bool file_directory_p (const char *); |
3846 | extern bool file_accessible_directory_p (const char *); | |
9fe43ff6 | 3847 | extern void init_fileio (void); |
383e0970 | 3848 | extern void syms_of_fileio (void); |
f75d7a91 | 3849 | extern Lisp_Object make_temp_name (Lisp_Object, bool); |
b86cfd28 | 3850 | extern Lisp_Object Qdelete_file; |
bb385a92 | 3851 | extern bool check_existing (const char *); |
3cfe6dfd | 3852 | |
e7032e7c | 3853 | /* Defined in search.c. */ |
383e0970 | 3854 | extern void shrink_regexp_cache (void); |
383e0970 | 3855 | extern void restore_search_regs (void); |
383e0970 | 3856 | extern void record_unwind_save_match_data (void); |
dbd37a95 PE |
3857 | struct re_registers; |
3858 | extern struct re_pattern_buffer *compile_pattern (Lisp_Object, | |
3859 | struct re_registers *, | |
457882c2 | 3860 | Lisp_Object, bool, bool); |
d311d28c | 3861 | extern ptrdiff_t fast_string_match (Lisp_Object, Lisp_Object); |
d923b542 DA |
3862 | extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object, const char *, |
3863 | ptrdiff_t); | |
d311d28c PE |
3864 | extern ptrdiff_t fast_string_match_ignore_case (Lisp_Object, Lisp_Object); |
3865 | extern ptrdiff_t fast_looking_at (Lisp_Object, ptrdiff_t, ptrdiff_t, | |
3866 | ptrdiff_t, ptrdiff_t, Lisp_Object); | |
b5426561 DA |
3867 | extern ptrdiff_t find_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
3868 | ptrdiff_t, ptrdiff_t *, ptrdiff_t *, bool); | |
d311d28c | 3869 | extern EMACS_INT scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
9fa1de30 | 3870 | EMACS_INT, bool); |
b5426561 DA |
3871 | extern ptrdiff_t find_newline_no_quit (ptrdiff_t, ptrdiff_t, |
3872 | ptrdiff_t, ptrdiff_t *); | |
2a14a4f1 DA |
3873 | extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t, |
3874 | ptrdiff_t, ptrdiff_t *); | |
383e0970 J |
3875 | extern void syms_of_search (void); |
3876 | extern void clear_regexp_cache (void); | |
3cfe6dfd | 3877 | |
464d5a5e | 3878 | /* Defined in minibuf.c. */ |
3cfe6dfd | 3879 | |
e6cba650 | 3880 | extern Lisp_Object Qcompletion_ignore_case; |
99f3388e | 3881 | extern Lisp_Object Vminibuffer_list; |
3cfe6dfd | 3882 | extern Lisp_Object last_minibuf_string; |
62f19c19 | 3883 | extern Lisp_Object get_minibuffer (EMACS_INT); |
383e0970 J |
3884 | extern void init_minibuf_once (void); |
3885 | extern void syms_of_minibuf (void); | |
3cfe6dfd | 3886 | |
464d5a5e | 3887 | /* Defined in callint.c. */ |
3cfe6dfd | 3888 | |
29208e82 | 3889 | extern Lisp_Object Qminus, Qplus; |
99f3388e | 3890 | extern Lisp_Object Qwhen; |
6e65b9cc | 3891 | extern Lisp_Object Qmouse_leave_buffer_hook; |
383e0970 | 3892 | extern void syms_of_callint (void); |
3cfe6dfd | 3893 | |
464d5a5e | 3894 | /* Defined in casefiddle.c. */ |
3cfe6dfd | 3895 | |
99f3388e | 3896 | extern Lisp_Object Qidentity; |
383e0970 J |
3897 | extern void syms_of_casefiddle (void); |
3898 | extern void keys_of_casefiddle (void); | |
3cfe6dfd | 3899 | |
464d5a5e | 3900 | /* Defined in casetab.c. */ |
1747fb16 | 3901 | |
383e0970 J |
3902 | extern void init_casetab_once (void); |
3903 | extern void syms_of_casetab (void); | |
1747fb16 | 3904 | |
464d5a5e | 3905 | /* Defined in keyboard.c. */ |
3cfe6dfd | 3906 | |
54cd1651 | 3907 | extern Lisp_Object echo_message_buffer; |
417750de | 3908 | extern struct kboard *echo_kboard; |
383e0970 | 3909 | extern void cancel_echoing (void); |
1425dcb6 | 3910 | extern Lisp_Object Qdisabled, QCfilter; |
955cbe7b PE |
3911 | extern Lisp_Object Qup, Qdown, Qbottom; |
3912 | extern Lisp_Object Qtop; | |
464d5a5e | 3913 | extern Lisp_Object last_undo_boundary; |
9fa1de30 | 3914 | extern bool input_pending; |
383e0970 J |
3915 | extern Lisp_Object menu_bar_items (Lisp_Object); |
3916 | extern Lisp_Object tool_bar_items (Lisp_Object, int *); | |
383e0970 | 3917 | extern void discard_mouse_events (void); |
4d7e6e51 PE |
3918 | #ifdef USABLE_SIGIO |
3919 | void handle_input_available_signal (int); | |
3920 | #endif | |
58555d81 | 3921 | extern Lisp_Object pending_funcalls; |
9fa1de30 PE |
3922 | extern bool detect_input_pending (void); |
3923 | extern bool detect_input_pending_ignore_squeezables (void); | |
3924 | extern bool detect_input_pending_run_timers (bool); | |
383e0970 | 3925 | extern void safe_run_hooks (Lisp_Object); |
a8fe7202 | 3926 | extern void cmd_error_internal (Lisp_Object, const char *); |
383e0970 J |
3927 | extern Lisp_Object command_loop_1 (void); |
3928 | extern Lisp_Object recursive_edit_1 (void); | |
3929 | extern void record_auto_save (void); | |
4752793e | 3930 | extern void force_auto_save_soon (void); |
383e0970 J |
3931 | extern void init_keyboard (void); |
3932 | extern void syms_of_keyboard (void); | |
3933 | extern void keys_of_keyboard (void); | |
3cfe6dfd | 3934 | |
464d5a5e | 3935 | /* Defined in indent.c. */ |
d311d28c | 3936 | extern ptrdiff_t current_column (void); |
383e0970 | 3937 | extern void invalidate_current_column (void); |
578098f3 | 3938 | extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT); |
383e0970 | 3939 | extern void syms_of_indent (void); |
3cfe6dfd | 3940 | |
464d5a5e | 3941 | /* Defined in frame.c. */ |
9fb0c957 | 3942 | extern Lisp_Object Qonly, Qnone; |
362fb47a | 3943 | extern Lisp_Object Qvisible; |
383e0970 J |
3944 | extern void store_frame_param (struct frame *, Lisp_Object, Lisp_Object); |
3945 | extern void store_in_alist (Lisp_Object *, Lisp_Object, Lisp_Object); | |
3946 | extern Lisp_Object do_switch_frame (Lisp_Object, int, int, Lisp_Object); | |
cf7a0de6 | 3947 | #if HAVE_NS || defined WINDOWSNT |
383e0970 | 3948 | extern Lisp_Object get_frame_param (struct frame *, Lisp_Object); |
81626931 | 3949 | #endif |
383e0970 | 3950 | extern void frames_discard_buffer (Lisp_Object); |
383e0970 | 3951 | extern void syms_of_frame (void); |
3cfe6dfd | 3952 | |
464d5a5e | 3953 | /* Defined in emacs.c. */ |
99f3388e DN |
3954 | extern char **initial_argv; |
3955 | extern int initial_argc; | |
5e617bc2 | 3956 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS) |
1882aa38 | 3957 | extern bool display_arg; |
89dc303e | 3958 | #endif |
a8fe7202 | 3959 | extern Lisp_Object decode_env_path (const char *, const char *); |
2c668b9a | 3960 | extern Lisp_Object empty_unibyte_string, empty_multibyte_string; |
e6cba650 | 3961 | extern Lisp_Object Qfile_name_handler_alist; |
4d7e6e51 | 3962 | extern _Noreturn void terminate_due_to_signal (int, int); |
6c07aac2 | 3963 | extern Lisp_Object Qkill_emacs; |
aa15c6bb JB |
3964 | #ifdef WINDOWSNT |
3965 | extern Lisp_Object Vlibrary_cache; | |
3966 | #endif | |
68c45bf0 | 3967 | #if HAVE_SETLOCALE |
383e0970 J |
3968 | void fixup_locale (void); |
3969 | void synchronize_system_messages_locale (void); | |
3970 | void synchronize_system_time_locale (void); | |
68c45bf0 | 3971 | #else |
84575e67 PE |
3972 | LISP_INLINE void fixup_locale (void) {} |
3973 | LISP_INLINE void synchronize_system_messages_locale (void) {} | |
3974 | LISP_INLINE void synchronize_system_time_locale (void) {} | |
68c45bf0 | 3975 | #endif |
1882aa38 | 3976 | extern void shut_down_emacs (int, Lisp_Object); |
ff808935 | 3977 | |
1882aa38 PE |
3978 | /* True means don't do interactive redisplay and don't change tty modes. */ |
3979 | extern bool noninteractive; | |
3980 | ||
3981 | /* True means remove site-lisp directories from load-path. */ | |
3982 | extern bool no_site_lisp; | |
66b7b0fe | 3983 | |
ff808935 DN |
3984 | /* Pipe used to send exit notification to the daemon parent at |
3985 | startup. */ | |
3986 | extern int daemon_pipe[2]; | |
3987 | #define IS_DAEMON (daemon_pipe[1] != 0) | |
3988 | ||
1882aa38 PE |
3989 | /* True if handling a fatal error already. */ |
3990 | extern bool fatal_error_in_progress; | |
3991 | ||
3992 | /* True means don't do use window-system-specific display code. */ | |
3993 | extern bool inhibit_window_system; | |
3994 | /* True means that a filter or a sentinel is running. */ | |
3995 | extern bool running_asynch_code; | |
3cfe6dfd | 3996 | |
6c60eb9f | 3997 | /* Defined in process.c. */ |
89dc303e | 3998 | extern Lisp_Object QCtype, Qlocal; |
6efad63b | 3999 | extern Lisp_Object Qprocessp; |
383e0970 | 4000 | extern void kill_buffer_processes (Lisp_Object); |
0bce5d9e PE |
4001 | extern bool wait_reading_process_output (intmax_t, int, int, bool, |
4002 | Lisp_Object, | |
4003 | struct Lisp_Process *, | |
4004 | int); | |
f1dd8073 PE |
4005 | /* Max value for the first argument of wait_reading_process_output. */ |
4006 | #if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5) | |
4007 | /* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3. | |
4008 | The bug merely causes a bogus warning, but the warning is annoying. */ | |
4009 | # define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX) | |
4010 | #else | |
4011 | # define WAIT_READING_MAX INTMAX_MAX | |
4012 | #endif | |
383e0970 J |
4013 | extern void add_keyboard_wait_descriptor (int); |
4014 | extern void delete_keyboard_wait_descriptor (int); | |
4475bec4 | 4015 | #ifdef HAVE_GPM |
383e0970 J |
4016 | extern void add_gpm_wait_descriptor (int); |
4017 | extern void delete_gpm_wait_descriptor (int); | |
4475bec4 | 4018 | #endif |
b82da769 | 4019 | extern void init_process_emacs (void); |
383e0970 J |
4020 | extern void syms_of_process (void); |
4021 | extern void setup_process_coding_systems (Lisp_Object); | |
3cfe6dfd | 4022 | |
4ebbdd67 | 4023 | /* Defined in callproc.c. */ |
6bd8c144 | 4024 | #ifndef DOS_NT |
845ca893 | 4025 | _Noreturn |
6bd8c144 | 4026 | #endif |
2f221583 | 4027 | extern int child_setup (int, int, int, char **, bool, Lisp_Object); |
383e0970 J |
4028 | extern void init_callproc_1 (void); |
4029 | extern void init_callproc (void); | |
4030 | extern void set_initial_environment (void); | |
4031 | extern void syms_of_callproc (void); | |
3cfe6dfd | 4032 | |
e7032e7c | 4033 | /* Defined in doc.c. */ |
99f3388e | 4034 | extern Lisp_Object Qfunction_documentation; |
383e0970 | 4035 | extern Lisp_Object read_doc_string (Lisp_Object); |
a08d4ba7 | 4036 | extern Lisp_Object get_doc_string (Lisp_Object, bool, bool); |
383e0970 | 4037 | extern void syms_of_doc (void); |
a08d4ba7 | 4038 | extern int read_bytecode_char (bool); |
3cfe6dfd | 4039 | |
e7032e7c | 4040 | /* Defined in bytecode.c. */ |
383e0970 | 4041 | extern void syms_of_bytecode (void); |
35c7a974 | 4042 | extern struct byte_stack *byte_stack_list; |
244ed907 | 4043 | #if BYTE_MARK_STACK |
383e0970 | 4044 | extern void mark_byte_stack (void); |
b286858c | 4045 | #endif |
383e0970 | 4046 | extern void unmark_byte_stack (void); |
0ee81a0c | 4047 | extern Lisp_Object exec_byte_code (Lisp_Object, Lisp_Object, Lisp_Object, |
f66c7cf8 | 4048 | Lisp_Object, ptrdiff_t, Lisp_Object *); |
3cfe6dfd | 4049 | |
e7032e7c | 4050 | /* Defined in macros.c. */ |
383e0970 J |
4051 | extern void init_macros (void); |
4052 | extern void syms_of_macros (void); | |
3cfe6dfd | 4053 | |
e7032e7c | 4054 | /* Defined in undo.c. */ |
89dc303e | 4055 | extern Lisp_Object Qapply; |
a387611b | 4056 | extern Lisp_Object Qinhibit_read_only; |
383e0970 | 4057 | extern void truncate_undo_list (struct buffer *); |
d311d28c PE |
4058 | extern void record_marker_adjustment (Lisp_Object, ptrdiff_t); |
4059 | extern void record_insert (ptrdiff_t, ptrdiff_t); | |
4060 | extern void record_delete (ptrdiff_t, Lisp_Object); | |
383e0970 | 4061 | extern void record_first_change (void); |
d311d28c PE |
4062 | extern void record_change (ptrdiff_t, ptrdiff_t); |
4063 | extern void record_property_change (ptrdiff_t, ptrdiff_t, | |
c8a66ab8 | 4064 | Lisp_Object, Lisp_Object, |
383e0970 J |
4065 | Lisp_Object); |
4066 | extern void syms_of_undo (void); | |
e7032e7c | 4067 | /* Defined in textprop.c. */ |
5f6bf5fe | 4068 | extern Lisp_Object Qfont, Qmouse_face; |
c2d8811c | 4069 | extern Lisp_Object Qinsert_in_front_hooks, Qinsert_behind_hooks; |
e6cba650 DN |
4070 | extern Lisp_Object Qfront_sticky, Qrear_nonsticky; |
4071 | extern Lisp_Object Qminibuffer_prompt; | |
4072 | ||
383e0970 | 4073 | extern void report_interval_modification (Lisp_Object, Lisp_Object); |
8537f1cb | 4074 | |
e7032e7c | 4075 | /* Defined in menu.c. */ |
383e0970 | 4076 | extern void syms_of_menu (void); |
febcacdd | 4077 | |
e7032e7c | 4078 | /* Defined in xmenu.c. */ |
383e0970 | 4079 | extern void syms_of_xmenu (void); |
526a2be7 | 4080 | |
e7032e7c | 4081 | /* Defined in termchar.h. */ |
28d7d09f KL |
4082 | struct tty_display_info; |
4083 | ||
e7032e7c | 4084 | /* Defined in termhooks.h. */ |
6ed8eeff | 4085 | struct terminal; |
28d440ab | 4086 | |
e7032e7c | 4087 | /* Defined in sysdep.c. */ |
2412f586 | 4088 | #ifndef HAVE_GET_CURRENT_DIR_NAME |
383e0970 | 4089 | extern char *get_current_dir_name (void); |
2b94e598 | 4090 | #endif |
383e0970 | 4091 | extern void stuff_char (char c); |
322aea6d | 4092 | extern void init_foreground_group (void); |
383e0970 J |
4093 | extern void init_sigio (int); |
4094 | extern void sys_subshell (void); | |
4095 | extern void sys_suspend (void); | |
4096 | extern void discard_tty_input (void); | |
b8956427 PE |
4097 | extern void block_tty_out_signal (void); |
4098 | extern void unblock_tty_out_signal (void); | |
383e0970 J |
4099 | extern void init_sys_modes (struct tty_display_info *); |
4100 | extern void reset_sys_modes (struct tty_display_info *); | |
4101 | extern void init_all_sys_modes (void); | |
4102 | extern void reset_all_sys_modes (void); | |
5994c183 | 4103 | extern void flush_pending_output (int) ATTRIBUTE_CONST; |
383e0970 J |
4104 | extern void child_setup_tty (int); |
4105 | extern void setup_pty (int); | |
4106 | extern int set_window_size (int, int, int); | |
ede49d71 | 4107 | extern EMACS_INT get_random (void); |
0e23ef9d PE |
4108 | extern void seed_random (void *, ptrdiff_t); |
4109 | extern void init_random (void); | |
cf29dd84 | 4110 | extern void emacs_backtrace (int); |
1088b922 | 4111 | extern _Noreturn void emacs_abort (void) NO_INLINE; |
383e0970 | 4112 | extern int emacs_open (const char *, int, int); |
c7ddc792 | 4113 | extern int emacs_pipe (int[2]); |
383e0970 | 4114 | extern int emacs_close (int); |
d311d28c PE |
4115 | extern ptrdiff_t emacs_read (int, char *, ptrdiff_t); |
4116 | extern ptrdiff_t emacs_write (int, const char *, ptrdiff_t); | |
4ebbdd67 PE |
4117 | extern ptrdiff_t emacs_write_sig (int, char const *, ptrdiff_t); |
4118 | extern void emacs_perror (char const *); | |
526a2be7 | 4119 | |
383e0970 J |
4120 | extern void unlock_all_files (void); |
4121 | extern void lock_file (Lisp_Object); | |
4122 | extern void unlock_file (Lisp_Object); | |
4123 | extern void unlock_buffer (struct buffer *); | |
4124 | extern void syms_of_filelock (void); | |
15b0ced5 | 4125 | |
e7032e7c | 4126 | /* Defined in sound.c. */ |
383e0970 | 4127 | extern void syms_of_sound (void); |
46abf440 | 4128 | |
e7032e7c | 4129 | /* Defined in category.c. */ |
383e0970 J |
4130 | extern void init_category_once (void); |
4131 | extern Lisp_Object char_category_set (int); | |
4132 | extern void syms_of_category (void); | |
46abf440 | 4133 | |
e7032e7c | 4134 | /* Defined in ccl.c. */ |
383e0970 | 4135 | extern void syms_of_ccl (void); |
46abf440 | 4136 | |
e7032e7c | 4137 | /* Defined in dired.c. */ |
383e0970 J |
4138 | extern void syms_of_dired (void); |
4139 | extern Lisp_Object directory_files_internal (Lisp_Object, Lisp_Object, | |
4140 | Lisp_Object, Lisp_Object, | |
86ec63ba | 4141 | bool, Lisp_Object); |
46abf440 | 4142 | |
e7032e7c | 4143 | /* Defined in term.c. */ |
e6cba650 | 4144 | extern int *char_ins_del_vector; |
383e0970 | 4145 | extern void syms_of_term (void); |
845ca893 PE |
4146 | extern _Noreturn void fatal (const char *msgid, ...) |
4147 | ATTRIBUTE_FORMAT_PRINTF (1, 2); | |
46abf440 | 4148 | |
e7032e7c | 4149 | /* Defined in terminal.c. */ |
383e0970 | 4150 | extern void syms_of_terminal (void); |
ed8dad6b | 4151 | |
e7032e7c | 4152 | /* Defined in font.c. */ |
383e0970 J |
4153 | extern void syms_of_font (void); |
4154 | extern void init_font (void); | |
b86cfd28 | 4155 | |
4f48f1ab | 4156 | #ifdef HAVE_WINDOW_SYSTEM |
e7032e7c | 4157 | /* Defined in fontset.c. */ |
383e0970 | 4158 | extern void syms_of_fontset (void); |
4f48f1ab | 4159 | |
e7032e7c | 4160 | /* Defined in xfns.c, w32fns.c, or macfns.c. */ |
99f3388e | 4161 | extern Lisp_Object Qfont_param; |
46abf440 AS |
4162 | #endif |
4163 | ||
c9628c79 MA |
4164 | /* Defined in gfilenotify.c */ |
4165 | #ifdef HAVE_GFILENOTIFY | |
90db8702 | 4166 | extern void globals_of_gfilenotify (void); |
c9628c79 | 4167 | extern void syms_of_gfilenotify (void); |
477f1e50 EZ |
4168 | #endif |
4169 | ||
81606b10 RS |
4170 | /* Defined in inotify.c */ |
4171 | #ifdef HAVE_INOTIFY | |
4172 | extern void syms_of_inotify (void); | |
4173 | #endif | |
4174 | ||
c9628c79 MA |
4175 | #ifdef HAVE_W32NOTIFY |
4176 | /* Defined on w32notify.c. */ | |
4177 | extern void syms_of_w32notify (void); | |
4178 | #endif | |
4179 | ||
e7032e7c | 4180 | /* Defined in xfaces.c. */ |
955cbe7b PE |
4181 | extern Lisp_Object Qdefault, Qtool_bar, Qfringe; |
4182 | extern Lisp_Object Qheader_line, Qscroll_bar, Qcursor; | |
4183 | extern Lisp_Object Qmode_line_inactive; | |
e6cba650 | 4184 | extern Lisp_Object Qface; |
89dc303e | 4185 | extern Lisp_Object Qnormal; |
0e9c8657 JB |
4186 | extern Lisp_Object QCfamily, QCweight, QCslant; |
4187 | extern Lisp_Object QCheight, QCname, QCwidth, QCforeground, QCbackground; | |
a411ac43 PE |
4188 | extern Lisp_Object Qextra_light, Qlight, Qsemi_light, Qsemi_bold; |
4189 | extern Lisp_Object Qbold, Qextra_bold, Qultra_bold; | |
4190 | extern Lisp_Object Qoblique, Qitalic; | |
99f3388e | 4191 | extern Lisp_Object Vface_alternative_font_family_alist; |
99f3388e | 4192 | extern Lisp_Object Vface_alternative_font_registry_alist; |
383e0970 | 4193 | extern void syms_of_xfaces (void); |
46abf440 AS |
4194 | |
4195 | #ifdef HAVE_X_WINDOWS | |
e7032e7c | 4196 | /* Defined in xfns.c. */ |
383e0970 | 4197 | extern void syms_of_xfns (void); |
46abf440 | 4198 | |
e7032e7c | 4199 | /* Defined in xsmfns.c. */ |
383e0970 | 4200 | extern void syms_of_xsmfns (void); |
e02207d4 | 4201 | |
e7032e7c | 4202 | /* Defined in xselect.c. */ |
383e0970 | 4203 | extern void syms_of_xselect (void); |
46abf440 | 4204 | |
e7032e7c | 4205 | /* Defined in xterm.c. */ |
383e0970 | 4206 | extern void syms_of_xterm (void); |
4f48f1ab | 4207 | #endif /* HAVE_X_WINDOWS */ |
4baa6f88 | 4208 | |
7af07b96 | 4209 | #ifdef HAVE_WINDOW_SYSTEM |
e7032e7c | 4210 | /* Defined in xterm.c, nsterm.m, w32term.c. */ |
7af07b96 AS |
4211 | extern char *x_get_keysym_name (int); |
4212 | #endif /* HAVE_WINDOW_SYSTEM */ | |
4213 | ||
381408e2 | 4214 | #ifdef HAVE_LIBXML2 |
e7032e7c | 4215 | /* Defined in xml.c. */ |
381408e2 | 4216 | extern void syms_of_xml (void); |
9078ead6 | 4217 | extern void xml_cleanup_parser (void); |
381408e2 LMI |
4218 | #endif |
4219 | ||
313546eb LMI |
4220 | #ifdef HAVE_ZLIB |
4221 | /* Defined in decompress.c. */ | |
4222 | extern void syms_of_decompress (void); | |
4223 | #endif | |
4224 | ||
b86cfd28 | 4225 | #ifdef HAVE_DBUS |
e7032e7c | 4226 | /* Defined in dbusbind.c. */ |
383e0970 | 4227 | void syms_of_dbusbind (void); |
b86cfd28 | 4228 | #endif |
36e053eb | 4229 | |
ad942b63 SM |
4230 | |
4231 | /* Defined in profiler.c. */ | |
6521894d | 4232 | extern bool profiler_memory_running; |
c2d7786e | 4233 | extern void malloc_probe (size_t); |
c2d7786e TM |
4234 | extern void syms_of_profiler (void); |
4235 | ||
ad942b63 | 4236 | |
36e053eb | 4237 | #ifdef DOS_NT |
e7032e7c | 4238 | /* Defined in msdos.c, w32.c. */ |
36e053eb DN |
4239 | extern char *emacs_root_dir (void); |
4240 | #endif /* DOS_NT */ | |
83925baa | 4241 | \f |
1882aa38 | 4242 | /* True means Emacs has already been initialized. |
3cfe6dfd | 4243 | Used during startup to detect startup of dumped Emacs. */ |
1882aa38 | 4244 | extern bool initialized; |
3cfe6dfd | 4245 | |
9fa1de30 PE |
4246 | /* True means ^G can quit instantly. */ |
4247 | extern bool immediate_quit; | |
3cfe6dfd | 4248 | |
261cb4bb | 4249 | extern void *xmalloc (size_t); |
23f86fce | 4250 | extern void *xzalloc (size_t); |
261cb4bb PE |
4251 | extern void *xrealloc (void *, size_t); |
4252 | extern void xfree (void *); | |
0065d054 PE |
4253 | extern void *xnmalloc (ptrdiff_t, ptrdiff_t); |
4254 | extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t); | |
4255 | extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t); | |
074b6efe | 4256 | |
383e0970 | 4257 | extern char *xstrdup (const char *); |
5745a7df | 4258 | extern void xputenv (const char *); |
3cfe6dfd | 4259 | |
a8fe7202 | 4260 | extern char *egetenv (const char *); |
e98227af | 4261 | |
5d6be39f | 4262 | /* Set up the name of the machine we're running on. */ |
383e0970 | 4263 | extern void init_system_name (void); |
881a5a80 | 4264 | |
d7a0a7c9 PE |
4265 | /* Return the absolute value of X. X should be a signed integer |
4266 | expression without side effects, and X's absolute value should not | |
4267 | exceed the maximum for its promoted type. This is called 'eabs' | |
4268 | because 'abs' is reserved by the C standard. */ | |
555b10b0 | 4269 | #define eabs(x) ((x) < 0 ? -(x) : (x)) |
096e8667 | 4270 | |
53ede3f4 GM |
4271 | /* Return a fixnum or float, depending on whether VAL fits in a Lisp |
4272 | fixnum. */ | |
4273 | ||
4274 | #define make_fixnum_or_float(val) \ | |
cbeff735 | 4275 | (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val)) |
6b61353c | 4276 | |
79518a8d KS |
4277 | /* SAFE_ALLOCA normally allocates memory on the stack, but if size is |
4278 | larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */ | |
4279 | ||
e7032e7c | 4280 | enum MAX_ALLOCA { MAX_ALLOCA = 16 * 1024 }; |
79518a8d | 4281 | |
98c6f1e3 | 4282 | extern void *record_xmalloc (size_t); |
79518a8d KS |
4283 | |
4284 | #define USE_SAFE_ALLOCA \ | |
2f221583 | 4285 | ptrdiff_t sa_count = SPECPDL_INDEX (); bool sa_must_free = 0 |
79518a8d | 4286 | |
a9e6bacc KS |
4287 | /* SAFE_ALLOCA allocates a simple buffer. */ |
4288 | ||
98c6f1e3 PE |
4289 | #define SAFE_ALLOCA(size) ((size) < MAX_ALLOCA \ |
4290 | ? alloca (size) \ | |
4291 | : (sa_must_free = 1, record_xmalloc (size))) | |
79518a8d | 4292 | |
0065d054 PE |
4293 | /* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER * |
4294 | NITEMS items, each of the same type as *BUF. MULTIPLIER must | |
4295 | positive. The code is tuned for MULTIPLIER being a constant. */ | |
4296 | ||
468afbac DA |
4297 | #define SAFE_NALLOCA(buf, multiplier, nitems) \ |
4298 | do { \ | |
4299 | if ((nitems) <= MAX_ALLOCA / sizeof *(buf) / (multiplier)) \ | |
4300 | (buf) = alloca (sizeof *(buf) * (multiplier) * (nitems)); \ | |
4301 | else \ | |
0065d054 PE |
4302 | { \ |
4303 | (buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \ | |
4304 | sa_must_free = 1; \ | |
27e498e6 | 4305 | record_unwind_protect_ptr (xfree, buf); \ |
0065d054 PE |
4306 | } \ |
4307 | } while (0) | |
4308 | ||
a9e6bacc KS |
4309 | /* SAFE_FREE frees xmalloced memory and enables GC as needed. */ |
4310 | ||
c33188d9 | 4311 | #define SAFE_FREE() \ |
79518a8d | 4312 | do { \ |
c33188d9 KS |
4313 | if (sa_must_free) { \ |
4314 | sa_must_free = 0; \ | |
79518a8d | 4315 | unbind_to (sa_count, Qnil); \ |
c33188d9 | 4316 | } \ |
79518a8d KS |
4317 | } while (0) |
4318 | ||
4319 | ||
5f5d6c62 KS |
4320 | /* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */ |
4321 | ||
663e2b3f DA |
4322 | #define SAFE_ALLOCA_LISP(buf, nelt) \ |
4323 | do { \ | |
4324 | if ((nelt) < MAX_ALLOCA / word_size) \ | |
4325 | buf = alloca ((nelt) * word_size); \ | |
4326 | else if ((nelt) < min (PTRDIFF_MAX, SIZE_MAX) / word_size) \ | |
4327 | { \ | |
4328 | Lisp_Object arg_; \ | |
4329 | buf = xmalloc ((nelt) * word_size); \ | |
1396ac86 | 4330 | arg_ = make_save_memory (buf, nelt); \ |
663e2b3f | 4331 | sa_must_free = 1; \ |
27e498e6 | 4332 | record_unwind_protect (free_save_value, arg_); \ |
663e2b3f DA |
4333 | } \ |
4334 | else \ | |
4335 | memory_full (SIZE_MAX); \ | |
5f5d6c62 KS |
4336 | } while (0) |
4337 | ||
79518a8d | 4338 | |
dac616ff DA |
4339 | /* Check whether it's time for GC, and run it if so. */ |
4340 | ||
f162bcc3 | 4341 | LISP_INLINE void |
dac616ff DA |
4342 | maybe_gc (void) |
4343 | { | |
4344 | if ((consing_since_gc > gc_cons_threshold | |
4345 | && consing_since_gc > gc_relative_threshold) | |
4346 | || (!NILP (Vmemory_full) | |
4347 | && consing_since_gc > memory_full_cons_threshold)) | |
4348 | Fgarbage_collect (); | |
4349 | } | |
4350 | ||
84575e67 | 4351 | LISP_INLINE bool |
e1f29348 BR |
4352 | functionp (Lisp_Object object) |
4353 | { | |
4354 | if (SYMBOLP (object) && !NILP (Ffboundp (object))) | |
4355 | { | |
4356 | object = Findirect_function (object, Qt); | |
4357 | ||
4358 | if (CONSP (object) && EQ (XCAR (object), Qautoload)) | |
4359 | { | |
4360 | /* Autoloaded symbols are functions, except if they load | |
4361 | macros or keymaps. */ | |
4362 | int i; | |
4363 | for (i = 0; i < 4 && CONSP (object); i++) | |
4364 | object = XCDR (object); | |
4365 | ||
4366 | return ! (CONSP (object) && !NILP (XCAR (object))); | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | if (SUBRP (object)) | |
4371 | return XSUBR (object)->max_args != UNEVALLED; | |
4372 | else if (COMPILEDP (object)) | |
4373 | return 1; | |
4374 | else if (CONSP (object)) | |
4375 | { | |
4376 | Lisp_Object car = XCAR (object); | |
4377 | return EQ (car, Qlambda) || EQ (car, Qclosure); | |
4378 | } | |
4379 | else | |
4380 | return 0; | |
4381 | } | |
4382 | ||
f162bcc3 PE |
4383 | INLINE_HEADER_END |
4384 | ||
6b61353c | 4385 | #endif /* EMACS_LISP_H */ |