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3cfe6dfd | 1 | /* Fundamental definitions for GNU Emacs Lisp interpreter. |
e2017fe2 | 2 | |
ba318903 PE |
3 | Copyright (C) 1985-1987, 1993-1995, 1997-2014 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> |
89887d67 | 27 | #include <stddef.h> |
4d7e6e51 | 28 | #include <float.h> |
8ac068ac | 29 | #include <inttypes.h> |
dd3482fe | 30 | #include <limits.h> |
be44ca6c | 31 | #include <intprops.h> |
b9ff995e | 32 | #include <verify.h> |
49609976 | 33 | #include <libguile.h> |
be44ca6c | 34 | |
f162bcc3 | 35 | INLINE_HEADER_BEGIN |
f162bcc3 | 36 | |
bb9937df PE |
37 | /* Define a TYPE constant ID as an externally visible name. Use like this: |
38 | ||
bba89481 PE |
39 | #define ID_val (some integer preprocessor expression) |
40 | #if ENUMABLE (ID_val) | |
41 | DEFINE_GDB_SYMBOL_ENUM (ID) | |
42 | #else | |
bb9937df | 43 | DEFINE_GDB_SYMBOL_BEGIN (TYPE, ID) |
bba89481 | 44 | # define ID ID_val |
bb9937df | 45 | DEFINE_GDB_SYMBOL_END (ID) |
bba89481 | 46 | #endif |
bb9937df PE |
47 | |
48 | This hack is for the benefit of compilers that do not make macro | |
49 | definitions visible to the debugger. It's used for symbols that | |
50 | .gdbinit needs, symbols whose values may not fit in 'int' (where an | |
bba89481 PE |
51 | enum would suffice). |
52 | ||
53 | Some GCC versions before GCC 4.2 omit enums in debugging output; | |
54 | see GCC bug 23336. So don't use enums with older GCC. */ | |
55 | ||
56 | #if !defined __GNUC__ || 4 < __GNUC__ + (2 <= __GNUC_MINOR__) | |
57 | # define ENUMABLE(val) (INT_MIN <= (val) && (val) <= INT_MAX) | |
58 | #else | |
59 | # define ENUMABLE(val) 0 | |
60 | #endif | |
61 | ||
bba89481 | 62 | #define DEFINE_GDB_SYMBOL_ENUM(id) enum { id = id##_val }; |
0f679e86 | 63 | #if defined MAIN_PROGRAM |
bb9937df PE |
64 | # define DEFINE_GDB_SYMBOL_BEGIN(type, id) type const id EXTERNALLY_VISIBLE |
65 | # define DEFINE_GDB_SYMBOL_END(id) = id; | |
66 | #else | |
67 | # define DEFINE_GDB_SYMBOL_BEGIN(type, id) | |
68 | # define DEFINE_GDB_SYMBOL_END(val) | |
69 | #endif | |
70 | ||
03a660a6 PE |
71 | /* The ubiquitous max and min macros. */ |
72 | #undef min | |
73 | #undef max | |
74 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
75 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
76 | ||
faa52174 PE |
77 | /* Number of elements in an array. */ |
78 | #define ARRAYELTS(arr) (sizeof (arr) / sizeof (arr)[0]) | |
01ae0fbf | 79 | |
5403b2d3 PE |
80 | /* Number of bits in a Lisp_Object tag. */ |
81 | DEFINE_GDB_SYMBOL_BEGIN (int, GCTYPEBITS) | |
82 | #define GCTYPEBITS 3 | |
83 | DEFINE_GDB_SYMBOL_END (GCTYPEBITS) | |
84 | ||
85 | /* The number of bits needed in an EMACS_INT over and above the number | |
86 | of bits in a pointer. This is 0 on systems where: | |
87 | 1. We can specify multiple-of-8 alignment on static variables. | |
88 | 2. We know malloc returns a multiple of 8. */ | |
89 | #if (defined alignas \ | |
90 | && (defined GNU_MALLOC || defined DOUG_LEA_MALLOC || defined __GLIBC__ \ | |
587fd086 | 91 | || defined DARWIN_OS || defined __sun || defined __MINGW32__)) |
5403b2d3 PE |
92 | # define NONPOINTER_BITS 0 |
93 | #else | |
94 | # define NONPOINTER_BITS GCTYPEBITS | |
95 | #endif | |
96 | ||
34374650 PE |
97 | /* EMACS_INT - signed integer wide enough to hold an Emacs value |
98 | EMACS_INT_MAX - maximum value of EMACS_INT; can be used in #if | |
99 | pI - printf length modifier for EMACS_INT | |
100 | EMACS_UINT - unsigned variant of EMACS_INT */ | |
49609976 BT |
101 | |
102 | typedef scm_t_signed_bits EMACS_INT; | |
103 | typedef scm_t_bits EMACS_UINT; | |
104 | #define EMACS_INT_MAX SCM_T_SIGNED_BITS_MAX | |
105 | ||
106 | #if INTPTR_MAX == INT_MAX | |
107 | #define pI "" | |
108 | #elif INTPTR_MAX == LONG_MAX | |
109 | #define pI "l" | |
110 | #elif INTPTR_MAX == LLONG_MAX | |
111 | #define pI "ll" | |
112 | #elif INTPTR_MAX == INTMAX_MAX | |
113 | #define pI "j" | |
114 | #else | |
115 | #error "Cannot determine length modifier for EMACS_INT" | |
68c45bf0 | 116 | #endif |
34374650 | 117 | |
df5b4930 PE |
118 | /* Number of bits to put in each character in the internal representation |
119 | of bool vectors. This should not vary across implementations. */ | |
120 | enum { BOOL_VECTOR_BITS_PER_CHAR = | |
121 | #define BOOL_VECTOR_BITS_PER_CHAR 8 | |
122 | BOOL_VECTOR_BITS_PER_CHAR | |
123 | }; | |
124 | ||
87c4314d | 125 | /* An unsigned integer type representing a fixed-length bit sequence, |
9c23779a | 126 | suitable for bool vector words, GC mark bits, etc. Normally it is size_t |
df5b4930 | 127 | for speed, but it is unsigned char on weird platforms. */ |
2cf00efc | 128 | #if BOOL_VECTOR_BITS_PER_CHAR == CHAR_BIT |
87c4314d | 129 | typedef size_t bits_word; |
2cf00efc | 130 | # define BITS_WORD_MAX SIZE_MAX |
df5b4930 PE |
131 | enum { BITS_PER_BITS_WORD = CHAR_BIT * sizeof (bits_word) }; |
132 | #else | |
133 | typedef unsigned char bits_word; | |
2cf00efc | 134 | # define BITS_WORD_MAX ((1u << BOOL_VECTOR_BITS_PER_CHAR) - 1) |
df5b4930 PE |
135 | enum { BITS_PER_BITS_WORD = BOOL_VECTOR_BITS_PER_CHAR }; |
136 | #endif | |
2cf00efc | 137 | verify (BITS_WORD_MAX >> (BITS_PER_BITS_WORD - 1) == 1); |
87c4314d | 138 | |
34374650 PE |
139 | /* Number of bits in some machine integer types. */ |
140 | enum | |
141 | { | |
142 | BITS_PER_CHAR = CHAR_BIT, | |
143 | BITS_PER_SHORT = CHAR_BIT * sizeof (short), | |
34374650 PE |
144 | BITS_PER_LONG = CHAR_BIT * sizeof (long int), |
145 | BITS_PER_EMACS_INT = CHAR_BIT * sizeof (EMACS_INT) | |
146 | }; | |
ce99fd65 | 147 | |
a81d11a3 PE |
148 | /* printmax_t and uprintmax_t are types for printing large integers. |
149 | These are the widest integers that are supported for printing. | |
150 | pMd etc. are conversions for printing them. | |
151 | On C99 hosts, there's no problem, as even the widest integers work. | |
152 | Fall back on EMACS_INT on pre-C99 hosts. */ | |
153 | #ifdef PRIdMAX | |
154 | typedef intmax_t printmax_t; | |
155 | typedef uintmax_t uprintmax_t; | |
156 | # define pMd PRIdMAX | |
157 | # define pMu PRIuMAX | |
158 | #else | |
159 | typedef EMACS_INT printmax_t; | |
160 | typedef EMACS_UINT uprintmax_t; | |
161 | # define pMd pI"d" | |
162 | # define pMu pI"u" | |
163 | #endif | |
164 | ||
9c4c5f81 PE |
165 | /* Use pD to format ptrdiff_t values, which suffice for indexes into |
166 | buffers and strings. Emacs never allocates objects larger than | |
167 | PTRDIFF_MAX bytes, as they cause problems with pointer subtraction. | |
168 | In C99, pD can always be "t"; configure it here for the sake of | |
169 | pre-C99 libraries such as glibc 2.0 and Solaris 8. */ | |
170 | #if PTRDIFF_MAX == INT_MAX | |
171 | # define pD "" | |
172 | #elif PTRDIFF_MAX == LONG_MAX | |
173 | # define pD "l" | |
174 | #elif PTRDIFF_MAX == LLONG_MAX | |
175 | # define pD "ll" | |
176 | #else | |
177 | # define pD "t" | |
178 | #endif | |
179 | ||
e0b8c689 | 180 | /* Extra internal type checking? */ |
c6129d7e | 181 | |
b9ff995e PE |
182 | /* Define Emacs versions of <assert.h>'s 'assert (COND)' and <verify.h>'s |
183 | 'assume (COND)'. COND should be free of side effects, as it may or | |
184 | may not be evaluated. | |
185 | ||
186 | 'eassert (COND)' checks COND at runtime if ENABLE_CHECKING is | |
187 | defined and suppress_checking is false, and does nothing otherwise. | |
188 | Emacs dies if COND is checked and is false. The suppress_checking | |
189 | variable is initialized to 0 in alloc.c. Set it to 1 using a | |
190 | debugger to temporarily disable aborting on detected internal | |
191 | inconsistencies or error conditions. | |
192 | ||
193 | In some cases, a good compiler may be able to optimize away the | |
194 | eassert macro even if ENABLE_CHECKING is true, e.g., if XSTRING (x) | |
195 | uses eassert to test STRINGP (x), but a particular use of XSTRING | |
196 | is invoked only after testing that STRINGP (x) is true, making the | |
197 | test redundant. | |
198 | ||
199 | eassume is like eassert except that it also causes the compiler to | |
200 | assume that COND is true afterwards, regardless of whether runtime | |
201 | checking is enabled. This can improve performance in some cases, | |
202 | though it can degrade performance in others. It's often suboptimal | |
203 | for COND to call external functions or access volatile storage. */ | |
204 | ||
310fbfa8 | 205 | #ifndef ENABLE_CHECKING |
96c06863 | 206 | # define eassert(cond) ((void) (false && (cond))) /* Check COND compiles. */ |
b9ff995e | 207 | # define eassume(cond) assume (cond) |
310fbfa8 | 208 | #else /* ENABLE_CHECKING */ |
c6129d7e | 209 | |
845ca893 | 210 | extern _Noreturn void die (const char *, const char *, int); |
244ed907 | 211 | |
fce31d69 | 212 | extern bool suppress_checking EXTERNALLY_VISIBLE; |
244ed907 | 213 | |
310fbfa8 | 214 | # define eassert(cond) \ |
5013fc08 | 215 | (suppress_checking || (cond) \ |
0d5d3029 | 216 | ? (void) 0 \ |
5013fc08 | 217 | : die (# cond, __FILE__, __LINE__)) |
b9ff995e PE |
218 | # define eassume(cond) \ |
219 | (suppress_checking \ | |
220 | ? assume (cond) \ | |
221 | : (cond) \ | |
222 | ? (void) 0 \ | |
223 | : die (# cond, __FILE__, __LINE__)) | |
3694b4ab | 224 | #endif /* ENABLE_CHECKING */ |
3e0b94e7 | 225 | |
b9466edb | 226 | \f |
4706125e PE |
227 | enum Lisp_Bits |
228 | { | |
b6b3b294 PE |
229 | /* 2**GCTYPEBITS. This must be a macro that expands to a literal |
230 | integer constant, for MSVC. */ | |
e32a5799 | 231 | #define GCALIGNMENT 8 |
e32a5799 | 232 | |
4706125e | 233 | /* Number of bits in a Lisp fixnum value, not counting the tag. */ |
49609976 | 234 | FIXNUM_BITS = SCM_I_FIXNUM_BIT |
4706125e | 235 | }; |
34374650 | 236 | |
e32a5799 PE |
237 | #if GCALIGNMENT != 1 << GCTYPEBITS |
238 | # error "GCALIGNMENT and GCTYPEBITS are inconsistent" | |
239 | #endif | |
240 | ||
5403b2d3 | 241 | DEFINE_GDB_SYMBOL_BEGIN (bool, USE_LSB_TAG) |
ee52e81d | 242 | #define USE_LSB_TAG 1 |
5403b2d3 PE |
243 | DEFINE_GDB_SYMBOL_END (USE_LSB_TAG) |
244 | ||
e32a5799 PE |
245 | #ifndef alignas |
246 | # define alignas(alignment) /* empty */ | |
bfe3e0a2 | 247 | # if USE_LSB_TAG |
e32a5799 | 248 | # error "USE_LSB_TAG requires alignas" |
b9466edb | 249 | # endif |
b9466edb SM |
250 | #endif |
251 | ||
84575e67 PE |
252 | /* Some operations are so commonly executed that they are implemented |
253 | as macros, not functions, because otherwise runtime performance would | |
254 | suffer too much when compiling with GCC without optimization. | |
255 | There's no need to inline everything, just the operations that | |
256 | would otherwise cause a serious performance problem. | |
257 | ||
258 | For each such operation OP, define a macro lisp_h_OP that contains | |
5ebb1ee6 | 259 | the operation's implementation. That way, OP can be implemented |
84575e67 PE |
260 | via a macro definition like this: |
261 | ||
262 | #define OP(x) lisp_h_OP (x) | |
263 | ||
264 | and/or via a function definition like this: | |
265 | ||
266 | LISP_MACRO_DEFUN (OP, Lisp_Object, (Lisp_Object x), (x)) | |
267 | ||
268 | which macro-expands to this: | |
269 | ||
270 | Lisp_Object (OP) (Lisp_Object x) { return lisp_h_OP (x); } | |
271 | ||
272 | without worrying about the implementations diverging, since | |
273 | lisp_h_OP defines the actual implementation. The lisp_h_OP macros | |
274 | are intended to be private to this include file, and should not be | |
275 | used elsewhere. | |
276 | ||
277 | FIXME: Remove the lisp_h_OP macros, and define just the inline OP | |
278 | functions, once most developers have access to GCC 4.8 or later and | |
279 | can use "gcc -Og" to debug. Maybe in the year 2016. See | |
280 | Bug#11935. | |
281 | ||
282 | Commentary for these macros can be found near their corresponding | |
283 | functions, below. */ | |
284 | ||
49609976 BT |
285 | #define SMOB_PTR(a) ((void *) SCM_SMOB_DATA (a)) |
286 | #define SMOB_TYPEP(x, tag) (x && SCM_SMOB_PREDICATE (tag, x)) | |
287 | #define lisp_h_XLI(o) (SCM_UNPACK (o)) | |
288 | #define lisp_h_XIL(i) (SCM_PACK (i)) | |
84575e67 PE |
289 | #define lisp_h_CHECK_LIST_CONS(x, y) CHECK_TYPE (CONSP (x), Qlistp, y) |
290 | #define lisp_h_CHECK_NUMBER(x) CHECK_TYPE (INTEGERP (x), Qintegerp, x) | |
291 | #define lisp_h_CHECK_SYMBOL(x) CHECK_TYPE (SYMBOLP (x), Qsymbolp, x) | |
40f5d4b7 PE |
292 | #define lisp_h_CHECK_TYPE(ok, predicate, x) \ |
293 | ((ok) ? (void) 0 : (void) wrong_type_argument (predicate, x)) | |
e642c718 | 294 | #define lisp_h_CONSP(x) (x && scm_is_pair (x)) |
49609976 | 295 | #define lisp_h_EQ(x, y) (scm_is_eq (x, y)) |
ed446f1e | 296 | #define lisp_h_FLOATP(x) (x && SCM_INEXACTP (x)) |
49609976 | 297 | #define lisp_h_INTEGERP(x) (SCM_I_INUMP (x)) |
84575e67 | 298 | #define lisp_h_MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker) |
49609976 | 299 | #define lisp_h_MISCP(x) (SMOB_TYPEP (x, lisp_misc_tag)) |
73880000 | 300 | #define lisp_h_NILP(x) (scm_is_lisp_false (x)) |
84575e67 | 301 | #define lisp_h_SET_SYMBOL_VAL(sym, v) \ |
844e0de1 BT |
302 | (eassert (SYMBOL_REDIRECT (sym) == SYMBOL_PLAINVAL), \ |
303 | scm_c_vector_set_x (sym, 4, v)) | |
304 | #define lisp_h_SYMBOL_CONSTANT_P(sym) (SYMBOL_CONSTANT (XSYMBOL (sym))) | |
84575e67 | 305 | #define lisp_h_SYMBOL_VAL(sym) \ |
844e0de1 BT |
306 | (eassert (SYMBOL_REDIRECT (sym) == SYMBOL_PLAINVAL), \ |
307 | scm_c_vector_ref (sym, 4)) | |
73880000 BT |
308 | #define lisp_h_SYMBOLP(x) \ |
309 | (x && (scm_is_symbol (x) || EQ (x, Qnil) || EQ (x, Qt))) | |
49609976 | 310 | #define lisp_h_VECTORLIKEP(x) (SMOB_TYPEP (x, lisp_vectorlike_tag)) |
e642c718 BT |
311 | #define lisp_h_XCAR(c) (scm_car (c)) |
312 | #define lisp_h_XCDR(c) (scm_cdr (c)) | |
49609976 | 313 | #define lisp_h_XHASH(a) (SCM_UNPACK (a)) |
84575e67 PE |
314 | |
315 | /* Define NAME as a lisp.h inline function that returns TYPE and has | |
316 | arguments declared as ARGDECLS and passed as ARGS. ARGDECLS and | |
317 | ARGS should be parenthesized. Implement the function by calling | |
318 | lisp_h_NAME ARGS. */ | |
319 | #define LISP_MACRO_DEFUN(name, type, argdecls, args) \ | |
00382e8b | 320 | INLINE type (name) argdecls { return lisp_h_##name args; } |
84575e67 PE |
321 | |
322 | /* like LISP_MACRO_DEFUN, except NAME returns void. */ | |
323 | #define LISP_MACRO_DEFUN_VOID(name, argdecls, args) \ | |
00382e8b | 324 | INLINE void (name) argdecls { lisp_h_##name args; } |
84575e67 PE |
325 | |
326 | ||
99a3d506 | 327 | /* Define the fundamental Lisp data structures. */ |
3cfe6dfd | 328 | |
c95a4266 EZ |
329 | /* This is the set of Lisp data types. If you want to define a new |
330 | data type, read the comments after Lisp_Fwd_Type definition | |
331 | below. */ | |
3cfe6dfd | 332 | |
49609976 BT |
333 | #define INTMASK SCM_MOST_POSITIVE_FIXNUM |
334 | #define case_Lisp_Int case Lisp_Int | |
2de9f71c | 335 | |
29abe551 | 336 | /* Idea stolen from GDB. Pedantic GCC complains about enum bitfields, |
91f2d272 PE |
337 | MSVC doesn't support them, and xlc and Oracle Studio c99 complain |
338 | vociferously about them. */ | |
339 | #if (defined __STRICT_ANSI__ || defined _MSC_VER || defined __IBMC__ \ | |
340 | || (defined __SUNPRO_C && __STDC__)) | |
a6fc3b5c EZ |
341 | #define ENUM_BF(TYPE) unsigned int |
342 | #else | |
343 | #define ENUM_BF(TYPE) enum TYPE | |
344 | #endif | |
345 | ||
49609976 BT |
346 | scm_t_bits lisp_misc_tag; |
347 | scm_t_bits lisp_string_tag; | |
348 | scm_t_bits lisp_vectorlike_tag; | |
a6fc3b5c | 349 | |
3cfe6dfd JB |
350 | enum Lisp_Type |
351 | { | |
01099ad1 BT |
352 | Lisp_Other, |
353 | ||
99a3d506 | 354 | /* Integer. XINT (obj) is the integer value. */ |
49609976 | 355 | Lisp_Int, |
3cfe6dfd | 356 | |
99a3d506 | 357 | /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */ |
49609976 | 358 | Lisp_Symbol, |
3cfe6dfd | 359 | |
84d1833e KH |
360 | /* Miscellaneous. XMISC (object) points to a union Lisp_Misc, |
361 | whose first member indicates the subtype. */ | |
49609976 | 362 | Lisp_Misc, |
3cfe6dfd JB |
363 | |
364 | /* String. XSTRING (object) points to a struct Lisp_String. | |
99a3d506 | 365 | The length of the string, and its contents, are stored therein. */ |
49609976 | 366 | Lisp_String, |
3cfe6dfd | 367 | |
b5088f80 | 368 | /* Vector of Lisp objects, or something resembling it. |
7c06ac2b | 369 | XVECTOR (object) points to a struct Lisp_Vector, which contains |
b5088f80 KH |
370 | the size and contents. The size field also contains the type |
371 | information, if it's not a real vector object. */ | |
49609976 | 372 | Lisp_Vectorlike, |
3cfe6dfd | 373 | |
99a3d506 | 374 | /* Cons. XCONS (object) points to a struct Lisp_Cons. */ |
49609976 | 375 | Lisp_Cons, |
4d1207f6 | 376 | |
49609976 | 377 | Lisp_Float |
3cfe6dfd JB |
378 | }; |
379 | ||
a32fa736 | 380 | /* This is the set of data types that share a common structure. |
c98adc1b KH |
381 | The first member of the structure is a type code from this set. |
382 | The enum values are arbitrary, but we'll use large numbers to make it | |
383 | more likely that we'll spot the error if a random word in memory is | |
384 | mistakenly interpreted as a Lisp_Misc. */ | |
1c4ca5a3 KH |
385 | enum Lisp_Misc_Type |
386 | { | |
c98adc1b | 387 | Lisp_Misc_Free = 0x5eab, |
84d1833e | 388 | Lisp_Misc_Marker, |
99a3d506 | 389 | Lisp_Misc_Overlay, |
222151aa | 390 | Lisp_Misc_Save_Value, |
99a3d506 RS |
391 | /* Currently floats are not a misc type, |
392 | but let's define this in case we want to change that. */ | |
393 | Lisp_Misc_Float, | |
394 | /* This is not a type code. It is for range checking. */ | |
395 | Lisp_Misc_Limit | |
1c4ca5a3 KH |
396 | }; |
397 | ||
ce5b453a SM |
398 | /* These are the types of forwarding objects used in the value slot |
399 | of symbols for special built-in variables whose value is stored in | |
400 | C variables. */ | |
401 | enum Lisp_Fwd_Type | |
402 | { | |
403 | Lisp_Fwd_Int, /* Fwd to a C `int' variable. */ | |
404 | Lisp_Fwd_Bool, /* Fwd to a C boolean var. */ | |
405 | Lisp_Fwd_Obj, /* Fwd to a C Lisp_Object variable. */ | |
406 | Lisp_Fwd_Buffer_Obj, /* Fwd to a Lisp_Object field of buffers. */ | |
29abe551 | 407 | Lisp_Fwd_Kboard_Obj /* Fwd to a Lisp_Object field of kboards. */ |
ce5b453a SM |
408 | }; |
409 | ||
49609976 BT |
410 | typedef SCM Lisp_Object; |
411 | ||
412 | #define LISP_INITIALLY_ZERO SCM_INUM0 | |
3cfe6dfd | 413 | |
84575e67 PE |
414 | /* Convert a Lisp_Object to the corresponding EMACS_INT and vice versa. |
415 | At the machine level, these operations are no-ops. */ | |
416 | LISP_MACRO_DEFUN (XLI, EMACS_INT, (Lisp_Object o), (o)) | |
417 | LISP_MACRO_DEFUN (XIL, Lisp_Object, (EMACS_INT i), (i)) | |
418 | ||
b5088f80 KH |
419 | /* In the size word of a struct Lisp_Vector, this bit means it's really |
420 | some other vector-like object. */ | |
bba89481 PE |
421 | #define PSEUDOVECTOR_FLAG_val (PTRDIFF_MAX - PTRDIFF_MAX / 2) |
422 | #if ENUMABLE (PSEUDOVECTOR_FLAG_val) | |
423 | DEFINE_GDB_SYMBOL_ENUM (PSEUDOVECTOR_FLAG) | |
424 | #else | |
bb9937df | 425 | DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, PSEUDOVECTOR_FLAG) |
bba89481 | 426 | # define PSEUDOVECTOR_FLAG PSEUDOVECTOR_FLAG_val |
bb9937df | 427 | DEFINE_GDB_SYMBOL_END (PSEUDOVECTOR_FLAG) |
bba89481 | 428 | #endif |
b5088f80 | 429 | |
303a5c93 | 430 | /* In a pseudovector, the size field actually contains a word with one |
6aea7528 DA |
431 | PSEUDOVECTOR_FLAG bit set, and one of the following values extracted |
432 | with PVEC_TYPE_MASK to indicate the actual type. */ | |
99a3d506 RS |
433 | enum pvec_type |
434 | { | |
6aea7528 | 435 | PVEC_NORMAL_VECTOR, |
ee28be33 SM |
436 | PVEC_FREE, |
437 | PVEC_PROCESS, | |
438 | PVEC_FRAME, | |
439 | PVEC_WINDOW, | |
440 | PVEC_BOOL_VECTOR, | |
441 | PVEC_BUFFER, | |
442 | PVEC_HASH_TABLE, | |
443 | PVEC_TERMINAL, | |
444 | PVEC_WINDOW_CONFIGURATION, | |
ee28be33 | 445 | PVEC_OTHER, |
914adc42 DA |
446 | /* These should be last, check internal_equal to see why. */ |
447 | PVEC_COMPILED, | |
448 | PVEC_CHAR_TABLE, | |
449 | PVEC_SUB_CHAR_TABLE, | |
450 | PVEC_FONT /* Should be last because it's used for range checking. */ | |
99a3d506 | 451 | }; |
b5088f80 | 452 | |
4706125e | 453 | enum More_Lisp_Bits |
1781b9e9 | 454 | { |
4706125e PE |
455 | /* For convenience, we also store the number of elements in these bits. |
456 | Note that this size is not necessarily the memory-footprint size, but | |
457 | only the number of Lisp_Object fields (that need to be traced by GC). | |
458 | The distinction is used, e.g., by Lisp_Process, which places extra | |
459 | non-Lisp_Object fields at the end of the structure. */ | |
914adc42 | 460 | PSEUDOVECTOR_SIZE_BITS = 12, |
1781b9e9 | 461 | PSEUDOVECTOR_SIZE_MASK = (1 << PSEUDOVECTOR_SIZE_BITS) - 1, |
914adc42 DA |
462 | |
463 | /* To calculate the memory footprint of the pseudovector, it's useful | |
464 | to store the size of non-Lisp area in word_size units here. */ | |
465 | PSEUDOVECTOR_REST_BITS = 12, | |
04a2d0d3 | 466 | PSEUDOVECTOR_REST_MASK = (((1 << PSEUDOVECTOR_REST_BITS) - 1) |
914adc42 DA |
467 | << PSEUDOVECTOR_SIZE_BITS), |
468 | ||
469 | /* Used to extract pseudovector subtype information. */ | |
470 | PSEUDOVECTOR_AREA_BITS = PSEUDOVECTOR_SIZE_BITS + PSEUDOVECTOR_REST_BITS, | |
56a0e352 | 471 | PVEC_TYPE_MASK = 0x3f << PSEUDOVECTOR_AREA_BITS |
4706125e | 472 | }; |
3cfe6dfd | 473 | \f |
84575e67 | 474 | /* These functions extract various sorts of values from a Lisp_Object. |
bb9937df PE |
475 | For example, if tem is a Lisp_Object whose type is Lisp_Cons, |
476 | XCONS (tem) is the struct Lisp_Cons * pointing to the memory for | |
477 | that cons. */ | |
3cfe6dfd | 478 | |
84575e67 PE |
479 | /* Largest and smallest representable fixnum values. These are the C |
480 | values. They are macros for use in static initializers. */ | |
49609976 BT |
481 | #define MOST_POSITIVE_FIXNUM SCM_MOST_POSITIVE_FIXNUM |
482 | #define MOST_NEGATIVE_FIXNUM SCM_MOST_NEGATIVE_FIXNUM | |
3cfe6dfd | 483 | |
84575e67 PE |
484 | /* Make a Lisp integer representing the value of the low order |
485 | bits of N. */ | |
00382e8b | 486 | INLINE Lisp_Object |
84575e67 PE |
487 | make_number (EMACS_INT n) |
488 | { | |
49609976 | 489 | return SCM_I_MAKINUM (n); |
84575e67 | 490 | } |
3cfe6dfd | 491 | |
84575e67 | 492 | /* Extract A's value as a signed integer. */ |
00382e8b | 493 | INLINE EMACS_INT |
84575e67 PE |
494 | XINT (Lisp_Object a) |
495 | { | |
49609976 | 496 | return SCM_I_INUM (a); |
84575e67 | 497 | } |
3cfe6dfd | 498 | |
84575e67 PE |
499 | /* Like XINT (A), but may be faster. A must be nonnegative. |
500 | If ! USE_LSB_TAG, this takes advantage of the fact that Lisp | |
501 | integers have zero-bits in their tags. */ | |
00382e8b | 502 | INLINE EMACS_INT |
84575e67 PE |
503 | XFASTINT (Lisp_Object a) |
504 | { | |
49609976 | 505 | EMACS_INT n = XINT (a); |
84575e67 PE |
506 | eassert (0 <= n); |
507 | return n; | |
508 | } | |
b7acde90 | 509 | |
84575e67 | 510 | /* Extract A's value as an unsigned integer. */ |
00382e8b | 511 | INLINE EMACS_UINT |
84575e67 PE |
512 | XUINT (Lisp_Object a) |
513 | { | |
49609976 | 514 | return SCM_I_INUM (a); |
84575e67 | 515 | } |
b349d111 | 516 | |
84575e67 PE |
517 | /* Return A's (Lisp-integer sized) hash. Happens to be like XUINT |
518 | right now, but XUINT should only be applied to objects we know are | |
519 | integers. */ | |
520 | LISP_MACRO_DEFUN (XHASH, EMACS_INT, (Lisp_Object a), (a)) | |
b263a6b0 | 521 | |
84575e67 | 522 | /* Like make_number (N), but may be faster. N must be in nonnegative range. */ |
00382e8b | 523 | INLINE Lisp_Object |
84575e67 PE |
524 | make_natnum (EMACS_INT n) |
525 | { | |
526 | eassert (0 <= n && n <= MOST_POSITIVE_FIXNUM); | |
49609976 | 527 | return make_number (n); |
84575e67 | 528 | } |
b9466edb | 529 | |
84575e67 PE |
530 | /* Return true if X and Y are the same object. */ |
531 | LISP_MACRO_DEFUN (EQ, bool, (Lisp_Object x, Lisp_Object y), (x, y)) | |
0de4bb68 | 532 | |
96c06863 | 533 | /* Value is true if I doesn't fit into a Lisp fixnum. It is |
987c9327 | 534 | written this way so that it also works if I is of unsigned |
2e6578fb | 535 | type or if I is a NaN. */ |
dc8e8b07 GM |
536 | |
537 | #define FIXNUM_OVERFLOW_P(i) \ | |
7216e43b | 538 | (! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM)) |
dc8e8b07 | 539 | |
00382e8b | 540 | INLINE ptrdiff_t |
d311d28c PE |
541 | clip_to_bounds (ptrdiff_t lower, EMACS_INT num, ptrdiff_t upper) |
542 | { | |
543 | return num < lower ? lower : num <= upper ? num : upper; | |
544 | } | |
84575e67 PE |
545 | \f |
546 | /* Forward declarations. */ | |
547 | ||
548 | /* Defined in this file. */ | |
549 | union Lisp_Fwd; | |
00382e8b PE |
550 | INLINE bool BOOL_VECTOR_P (Lisp_Object); |
551 | INLINE bool BUFFER_OBJFWDP (union Lisp_Fwd *); | |
552 | INLINE bool BUFFERP (Lisp_Object); | |
553 | INLINE bool CHAR_TABLE_P (Lisp_Object); | |
554 | INLINE Lisp_Object CHAR_TABLE_REF_ASCII (Lisp_Object, ptrdiff_t); | |
555 | INLINE bool (CONSP) (Lisp_Object); | |
556 | INLINE bool (FLOATP) (Lisp_Object); | |
557 | INLINE bool functionp (Lisp_Object); | |
558 | INLINE bool (INTEGERP) (Lisp_Object); | |
559 | INLINE bool (MARKERP) (Lisp_Object); | |
560 | INLINE bool (MISCP) (Lisp_Object); | |
561 | INLINE bool (NILP) (Lisp_Object); | |
562 | INLINE bool OVERLAYP (Lisp_Object); | |
563 | INLINE bool PROCESSP (Lisp_Object); | |
564 | INLINE bool PSEUDOVECTORP (Lisp_Object, int); | |
565 | INLINE bool SAVE_VALUEP (Lisp_Object); | |
566 | INLINE void set_sub_char_table_contents (Lisp_Object, ptrdiff_t, | |
84575e67 | 567 | Lisp_Object); |
00382e8b PE |
568 | INLINE bool STRINGP (Lisp_Object); |
569 | INLINE bool SUB_CHAR_TABLE_P (Lisp_Object); | |
00382e8b PE |
570 | INLINE bool (SYMBOLP) (Lisp_Object); |
571 | INLINE bool (VECTORLIKEP) (Lisp_Object); | |
572 | INLINE bool WINDOWP (Lisp_Object); | |
573 | INLINE struct Lisp_Save_Value *XSAVE_VALUE (Lisp_Object); | |
d311d28c | 574 | |
84575e67 PE |
575 | /* Defined in chartab.c. */ |
576 | extern Lisp_Object char_table_ref (Lisp_Object, int); | |
577 | extern void char_table_set (Lisp_Object, int, Lisp_Object); | |
578 | extern int char_table_translate (Lisp_Object, int); | |
579 | ||
580 | /* Defined in data.c. */ | |
581 | extern Lisp_Object Qarrayp, Qbufferp, Qbuffer_or_string_p, Qchar_table_p; | |
582 | extern Lisp_Object Qconsp, Qfloatp, Qintegerp, Qlambda, Qlistp, Qmarkerp, Qnil; | |
2f1205e0 | 583 | extern Lisp_Object Qnumberp, Qstringp, Qsymbolp, Qt, Qvectorp; |
3e0b94e7 | 584 | extern Lisp_Object Qbool_vector_p; |
84575e67 | 585 | extern Lisp_Object Qvector_or_char_table_p, Qwholenump; |
8f3a2c26 | 586 | extern Lisp_Object Qwindow; |
84575e67 PE |
587 | extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object); |
588 | ||
589 | /* Defined in emacs.c. */ | |
f58269c4 | 590 | extern bool might_dump; |
73bfe891 PE |
591 | /* True means Emacs has already been initialized. |
592 | Used during startup to detect startup of dumped Emacs. */ | |
593 | extern bool initialized; | |
84575e67 PE |
594 | |
595 | /* Defined in eval.c. */ | |
596 | extern Lisp_Object Qautoload; | |
597 | ||
598 | /* Defined in floatfns.c. */ | |
599 | extern double extract_float (Lisp_Object); | |
600 | ||
601 | /* Defined in process.c. */ | |
602 | extern Lisp_Object Qprocessp; | |
603 | ||
604 | /* Defined in window.c. */ | |
605 | extern Lisp_Object Qwindowp; | |
606 | ||
607 | /* Defined in xdisp.c. */ | |
608 | extern Lisp_Object Qimage; | |
7b1123d8 | 609 | \f |
49609976 BT |
610 | /* Extract A's type. */ |
611 | INLINE enum Lisp_Type | |
612 | XTYPE (Lisp_Object o) | |
613 | { | |
614 | if (INTEGERP (o)) | |
615 | return Lisp_Int; | |
616 | else if (SYMBOLP (o)) | |
617 | return Lisp_Symbol; | |
618 | else if (MISCP (o)) | |
619 | return Lisp_Misc; | |
620 | else if (STRINGP (o)) | |
621 | return Lisp_String; | |
622 | else if (VECTORLIKEP (o)) | |
623 | return Lisp_Vectorlike; | |
624 | else if (CONSP (o)) | |
625 | return Lisp_Cons; | |
626 | else if (FLOATP (o)) | |
627 | return Lisp_Float; | |
628 | else | |
01099ad1 | 629 | return Lisp_Other; |
49609976 | 630 | } |
84575e67 | 631 | |
99a3d506 | 632 | /* Extract a value or address from a Lisp_Object. */ |
3cfe6dfd | 633 | |
00382e8b | 634 | INLINE struct Lisp_Vector * |
84575e67 PE |
635 | XVECTOR (Lisp_Object a) |
636 | { | |
637 | eassert (VECTORLIKEP (a)); | |
49609976 | 638 | return SMOB_PTR (a); |
84575e67 | 639 | } |
c9f6631c | 640 | |
00382e8b | 641 | INLINE struct Lisp_String * |
84575e67 PE |
642 | XSTRING (Lisp_Object a) |
643 | { | |
644 | eassert (STRINGP (a)); | |
49609976 | 645 | return SMOB_PTR (a); |
84575e67 | 646 | } |
ce5b453a | 647 | |
d23d13c0 BT |
648 | extern void initialize_symbol (Lisp_Object, Lisp_Object); |
649 | INLINE Lisp_Object build_string (const char *); | |
650 | extern Lisp_Object symbol_module; | |
1d59fbe3 | 651 | extern Lisp_Object function_module; |
29418031 | 652 | extern Lisp_Object plist_module; |
73880000 | 653 | extern Lisp_Object Qt, Qnil, Qt_, Qnil_; |
d23d13c0 | 654 | |
844e0de1 BT |
655 | typedef Lisp_Object sym_t; |
656 | ||
d1c3da7b | 657 | INLINE sym_t XSYMBOL (Lisp_Object a); |
ce5b453a | 658 | |
7c06ac2b | 659 | /* Pseudovector types. */ |
84575e67 | 660 | |
00382e8b | 661 | INLINE struct Lisp_Process * |
84575e67 PE |
662 | XPROCESS (Lisp_Object a) |
663 | { | |
664 | eassert (PROCESSP (a)); | |
49609976 | 665 | return SMOB_PTR (a); |
84575e67 PE |
666 | } |
667 | ||
00382e8b | 668 | INLINE struct window * |
84575e67 PE |
669 | XWINDOW (Lisp_Object a) |
670 | { | |
671 | eassert (WINDOWP (a)); | |
49609976 | 672 | return SMOB_PTR (a); |
84575e67 PE |
673 | } |
674 | ||
00382e8b | 675 | INLINE struct terminal * |
84575e67 PE |
676 | XTERMINAL (Lisp_Object a) |
677 | { | |
49609976 | 678 | return SMOB_PTR (a); |
84575e67 PE |
679 | } |
680 | ||
00382e8b | 681 | INLINE struct buffer * |
84575e67 PE |
682 | XBUFFER (Lisp_Object a) |
683 | { | |
684 | eassert (BUFFERP (a)); | |
49609976 | 685 | return SMOB_PTR (a); |
84575e67 PE |
686 | } |
687 | ||
00382e8b | 688 | INLINE struct Lisp_Char_Table * |
84575e67 PE |
689 | XCHAR_TABLE (Lisp_Object a) |
690 | { | |
691 | eassert (CHAR_TABLE_P (a)); | |
49609976 | 692 | return SMOB_PTR (a); |
84575e67 PE |
693 | } |
694 | ||
00382e8b | 695 | INLINE struct Lisp_Sub_Char_Table * |
84575e67 PE |
696 | XSUB_CHAR_TABLE (Lisp_Object a) |
697 | { | |
698 | eassert (SUB_CHAR_TABLE_P (a)); | |
49609976 | 699 | return SMOB_PTR (a); |
84575e67 PE |
700 | } |
701 | ||
00382e8b | 702 | INLINE struct Lisp_Bool_Vector * |
84575e67 PE |
703 | XBOOL_VECTOR (Lisp_Object a) |
704 | { | |
705 | eassert (BOOL_VECTOR_P (a)); | |
49609976 | 706 | return SMOB_PTR (a); |
84575e67 PE |
707 | } |
708 | ||
00382e8b | 709 | INLINE Lisp_Object |
84575e67 PE |
710 | make_lisp_proc (struct Lisp_Process *p) |
711 | { | |
49609976 | 712 | return scm_new_smob (lisp_vectorlike_tag, (scm_t_bits) p); |
84575e67 PE |
713 | } |
714 | ||
ff55dfe8 | 715 | #define XSETINT(a, b) ((a) = make_number (b)) |
84575e67 | 716 | #define XSETFASTINT(a, b) ((a) = make_natnum (b)) |
49609976 BT |
717 | #define XSETVECTOR(a, b) ((a) = (b)->header.self) |
718 | #define XSETSTRING(a, b) ((a) = (b)->self) | |
844e0de1 | 719 | #define XSETSYMBOL(a, b) ((a) = scm_c_vector_ref (b, 0)) |
49609976 | 720 | #define XSETMISC(a, b) (a) = ((union Lisp_Misc *) (b))->u_any.self |
7c06ac2b RS |
721 | |
722 | /* Pseudovector types. */ | |
c9f6631c | 723 | |
914adc42 DA |
724 | #define XSETPVECTYPE(v, code) \ |
725 | ((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS)) | |
726 | #define XSETPVECTYPESIZE(v, code, lispsize, restsize) \ | |
ee28be33 | 727 | ((v)->header.size = (PSEUDOVECTOR_FLAG \ |
914adc42 DA |
728 | | ((code) << PSEUDOVECTOR_AREA_BITS) \ |
729 | | ((restsize) << PSEUDOVECTOR_SIZE_BITS) \ | |
730 | | (lispsize))) | |
aa0b0087 PE |
731 | |
732 | /* The cast to struct vectorlike_header * avoids aliasing issues. */ | |
7c06ac2b | 733 | #define XSETPSEUDOVECTOR(a, b, code) \ |
7555c33f SM |
734 | XSETTYPED_PSEUDOVECTOR (a, b, \ |
735 | (((struct vectorlike_header *) \ | |
49609976 | 736 | SCM_SMOB_DATA (a)) \ |
7555c33f SM |
737 | ->size), \ |
738 | code) | |
eab3844f | 739 | #define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \ |
beb9f745 | 740 | (XSETVECTOR (a, b), \ |
eab3844f | 741 | eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \ |
914adc42 | 742 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS)))) |
aa0b0087 | 743 | |
7c06ac2b RS |
744 | #define XSETWINDOW_CONFIGURATION(a, b) \ |
745 | (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION)) | |
746 | #define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS)) | |
747 | #define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW)) | |
49e49fb5 | 748 | #define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL)) |
914adc42 | 749 | #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR)) |
7c06ac2b | 750 | #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED)) |
99a3d506 | 751 | #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER)) |
608ff985 RS |
752 | #define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE)) |
753 | #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR)) | |
1842abb2 | 754 | #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE)) |
c9f6631c | 755 | |
c8a39089 KS |
756 | /* Type checking. */ |
757 | ||
40f5d4b7 PE |
758 | LISP_MACRO_DEFUN_VOID (CHECK_TYPE, |
759 | (int ok, Lisp_Object predicate, Lisp_Object x), | |
760 | (ok, predicate, x)) | |
c8a39089 | 761 | |
c644523b | 762 | /* Deprecated and will be removed soon. */ |
e34f7f79 DA |
763 | |
764 | #define INTERNAL_FIELD(field) field ## _ | |
c8a39089 | 765 | |
5f6bf5fe | 766 | /* See the macros in intervals.h. */ |
e221eae3 JA |
767 | |
768 | typedef struct interval *INTERVAL; | |
769 | ||
69f7f524 BT |
770 | struct Lisp_String |
771 | { | |
772 | ptrdiff_t size; | |
773 | ptrdiff_t size_byte; | |
774 | INTERVAL intervals; /* Text properties in this string. */ | |
775 | unsigned char *data; | |
776 | }; | |
777 | ||
84575e67 PE |
778 | LISP_MACRO_DEFUN (XCAR, Lisp_Object, (Lisp_Object c), (c)) |
779 | LISP_MACRO_DEFUN (XCDR, Lisp_Object, (Lisp_Object c), (c)) | |
f3fbd155 KR |
780 | |
781 | /* Use these to set the fields of a cons cell. | |
782 | ||
783 | Note that both arguments may refer to the same object, so 'n' | |
84575e67 | 784 | should not be read after 'c' is first modified. */ |
00382e8b | 785 | INLINE void |
84575e67 PE |
786 | XSETCAR (Lisp_Object c, Lisp_Object n) |
787 | { | |
e642c718 | 788 | scm_set_car_x (c, n); |
84575e67 | 789 | } |
00382e8b | 790 | INLINE void |
84575e67 PE |
791 | XSETCDR (Lisp_Object c, Lisp_Object n) |
792 | { | |
e642c718 | 793 | scm_set_cdr_x (c, n); |
84575e67 | 794 | } |
f3fbd155 | 795 | |
b7acde90 | 796 | /* Take the car or cdr of something whose type is not known. */ |
00382e8b | 797 | INLINE Lisp_Object |
84575e67 PE |
798 | CAR (Lisp_Object c) |
799 | { | |
800 | return (CONSP (c) ? XCAR (c) | |
801 | : NILP (c) ? Qnil | |
802 | : wrong_type_argument (Qlistp, c)); | |
803 | } | |
00382e8b | 804 | INLINE Lisp_Object |
84575e67 PE |
805 | CDR (Lisp_Object c) |
806 | { | |
807 | return (CONSP (c) ? XCDR (c) | |
808 | : NILP (c) ? Qnil | |
809 | : wrong_type_argument (Qlistp, c)); | |
810 | } | |
b7acde90 | 811 | |
c8a39089 | 812 | /* Take the car or cdr of something whose type is not known. */ |
00382e8b | 813 | INLINE Lisp_Object |
84575e67 PE |
814 | CAR_SAFE (Lisp_Object c) |
815 | { | |
816 | return CONSP (c) ? XCAR (c) : Qnil; | |
817 | } | |
00382e8b | 818 | INLINE Lisp_Object |
84575e67 PE |
819 | CDR_SAFE (Lisp_Object c) |
820 | { | |
821 | return CONSP (c) ? XCDR (c) : Qnil; | |
822 | } | |
35f464a7 | 823 | |
84575e67 | 824 | /* In a string or vector, the sign bit of the `size' is the gc mark bit. */ |
35f464a7 | 825 | |
84575e67 | 826 | /* True if STR is a multibyte string. */ |
00382e8b | 827 | INLINE bool |
84575e67 PE |
828 | STRING_MULTIBYTE (Lisp_Object str) |
829 | { | |
830 | return 0 <= XSTRING (str)->size_byte; | |
831 | } | |
35f464a7 | 832 | |
c9d624c6 PE |
833 | /* An upper bound on the number of bytes in a Lisp string, not |
834 | counting the terminating null. This a tight enough bound to | |
835 | prevent integer overflow errors that would otherwise occur during | |
836 | string size calculations. A string cannot contain more bytes than | |
837 | a fixnum can represent, nor can it be so long that C pointer | |
838 | arithmetic stops working on the string plus its terminating null. | |
839 | Although the actual size limit (see STRING_BYTES_MAX in alloc.c) | |
840 | may be a bit smaller than STRING_BYTES_BOUND, calculating it here | |
841 | would expose alloc.c internal details that we'd rather keep | |
03a660a6 PE |
842 | private. |
843 | ||
7b1123d8 PE |
844 | This is a macro for use in static initializers. The cast to |
845 | ptrdiff_t ensures that the macro is signed. */ | |
c9d624c6 | 846 | #define STRING_BYTES_BOUND \ |
88fb40b4 | 847 | ((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1)) |
d1f3d2af | 848 | |
491c2516 | 849 | /* Mark STR as a unibyte string. */ |
96c06863 PE |
850 | #define STRING_SET_UNIBYTE(STR) \ |
851 | do { \ | |
852 | if (EQ (STR, empty_multibyte_string)) \ | |
853 | (STR) = empty_unibyte_string; \ | |
854 | else \ | |
855 | XSTRING (STR)->size_byte = -1; \ | |
856 | } while (false) | |
491c2516 | 857 | |
94ef4d69 KH |
858 | /* Mark STR as a multibyte string. Assure that STR contains only |
859 | ASCII characters in advance. */ | |
96c06863 PE |
860 | #define STRING_SET_MULTIBYTE(STR) \ |
861 | do { \ | |
862 | if (EQ (STR, empty_unibyte_string)) \ | |
863 | (STR) = empty_multibyte_string; \ | |
864 | else \ | |
865 | XSTRING (STR)->size_byte = XSTRING (STR)->size; \ | |
866 | } while (false) | |
94ef4d69 | 867 | |
84575e67 | 868 | /* Convenience functions for dealing with Lisp strings. */ |
3cfe6dfd | 869 | |
00382e8b | 870 | INLINE unsigned char * |
84575e67 PE |
871 | SDATA (Lisp_Object string) |
872 | { | |
873 | return XSTRING (string)->data; | |
874 | } | |
00382e8b | 875 | INLINE char * |
84575e67 PE |
876 | SSDATA (Lisp_Object string) |
877 | { | |
878 | /* Avoid "differ in sign" warnings. */ | |
879 | return (char *) SDATA (string); | |
880 | } | |
00382e8b | 881 | INLINE unsigned char |
84575e67 PE |
882 | SREF (Lisp_Object string, ptrdiff_t index) |
883 | { | |
884 | return SDATA (string)[index]; | |
885 | } | |
00382e8b | 886 | INLINE void |
84575e67 PE |
887 | SSET (Lisp_Object string, ptrdiff_t index, unsigned char new) |
888 | { | |
889 | SDATA (string)[index] = new; | |
890 | } | |
00382e8b | 891 | INLINE ptrdiff_t |
84575e67 PE |
892 | SCHARS (Lisp_Object string) |
893 | { | |
894 | return XSTRING (string)->size; | |
895 | } | |
fbe9e0b9 | 896 | |
00382e8b | 897 | INLINE ptrdiff_t |
84575e67 PE |
898 | STRING_BYTES (struct Lisp_String *s) |
899 | { | |
84575e67 | 900 | return s->size_byte < 0 ? s->size : s->size_byte; |
84575e67 | 901 | } |
fbe9e0b9 | 902 | |
00382e8b | 903 | INLINE ptrdiff_t |
84575e67 PE |
904 | SBYTES (Lisp_Object string) |
905 | { | |
906 | return STRING_BYTES (XSTRING (string)); | |
907 | } | |
00382e8b | 908 | INLINE void |
84575e67 PE |
909 | STRING_SET_CHARS (Lisp_Object string, ptrdiff_t newsize) |
910 | { | |
911 | XSTRING (string)->size = newsize; | |
912 | } | |
3cfe6dfd | 913 | |
aa0b0087 | 914 | /* Header of vector-like objects. This documents the layout constraints on |
914adc42 | 915 | vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents |
84575e67 PE |
916 | compilers from being fooled by Emacs's type punning: XSETPSEUDOVECTOR |
917 | and PSEUDOVECTORP cast their pointers to struct vectorlike_header *, | |
aa0b0087 PE |
918 | because when two such pointers potentially alias, a compiler won't |
919 | incorrectly reorder loads and stores to their size fields. See | |
df5b4930 | 920 | Bug#8546. */ |
b102ceb1 | 921 | struct vectorlike_header |
3cfe6dfd | 922 | { |
49609976 BT |
923 | Lisp_Object self; |
924 | ||
925 | /* This field contains various pieces of information: | |
2bdeb39a | 926 | - The second bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain |
ee28be33 SM |
927 | vector (0) or a pseudovector (1). |
928 | - If PSEUDOVECTOR_FLAG is 0, the rest holds the size (number | |
929 | of slots) of the vector. | |
914adc42 DA |
930 | - If PSEUDOVECTOR_FLAG is 1, the rest is subdivided into three fields: |
931 | - a) pseudovector subtype held in PVEC_TYPE_MASK field; | |
932 | - b) number of Lisp_Objects slots at the beginning of the object | |
933 | held in PSEUDOVECTOR_SIZE_MASK field. These objects are always | |
934 | traced by the GC; | |
935 | - c) size of the rest fields held in PSEUDOVECTOR_REST_MASK and | |
936 | measured in word_size units. Rest fields may also include | |
937 | Lisp_Objects, but these objects usually needs some special treatment | |
938 | during GC. | |
939 | There are some exceptions. For PVEC_FREE, b) is always zero. For | |
940 | PVEC_BOOL_VECTOR and PVEC_SUBR, both b) and c) are always zero. | |
941 | Current layout limits the pseudovectors to 63 PVEC_xxx subtypes, | |
942 | 4095 Lisp_Objects in GC-ed area and 4095 word-sized other slots. */ | |
d311d28c | 943 | ptrdiff_t size; |
eab3844f PE |
944 | }; |
945 | ||
91f2d272 | 946 | /* A regular vector is just a header plus an array of Lisp_Objects. */ |
663e2b3f | 947 | |
eab3844f PE |
948 | struct Lisp_Vector |
949 | { | |
b102ceb1 | 950 | struct vectorlike_header header; |
91f2d272 PE |
951 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
952 | }; | |
0a858ebf | 953 | |
91f2d272 PE |
954 | /* C11 prohibits alignof (struct Lisp_Vector), so compute it manually. */ |
955 | enum | |
956 | { | |
957 | ALIGNOF_STRUCT_LISP_VECTOR | |
958 | = alignof (union { struct vectorlike_header a; Lisp_Object b; }) | |
3cfe6dfd JB |
959 | }; |
960 | ||
91f2d272 | 961 | /* A boolvector is a kind of vectorlike, with contents like a string. */ |
663e2b3f DA |
962 | |
963 | struct Lisp_Bool_Vector | |
964 | { | |
965 | /* HEADER.SIZE is the vector's size field. It doesn't have the real size, | |
966 | just the subtype information. */ | |
967 | struct vectorlike_header header; | |
968 | /* This is the size in bits. */ | |
969 | EMACS_INT size; | |
2cf00efc | 970 | /* The actual bits, packed into bytes. |
75360f19 | 971 | Zeros fill out the last word if needed. |
2cf00efc PE |
972 | The bits are in little-endian order in the bytes, and |
973 | the bytes are in little-endian order in the words. */ | |
df5b4930 | 974 | bits_word data[FLEXIBLE_ARRAY_MEMBER]; |
663e2b3f DA |
975 | }; |
976 | ||
1c0a7493 PE |
977 | INLINE EMACS_INT |
978 | bool_vector_size (Lisp_Object a) | |
979 | { | |
980 | EMACS_INT size = XBOOL_VECTOR (a)->size; | |
981 | eassume (0 <= size); | |
982 | return size; | |
983 | } | |
984 | ||
df5b4930 PE |
985 | INLINE bits_word * |
986 | bool_vector_data (Lisp_Object a) | |
987 | { | |
988 | return XBOOL_VECTOR (a)->data; | |
989 | } | |
990 | ||
991 | INLINE unsigned char * | |
992 | bool_vector_uchar_data (Lisp_Object a) | |
993 | { | |
994 | return (unsigned char *) bool_vector_data (a); | |
995 | } | |
996 | ||
2cf00efc | 997 | /* The number of data words and bytes in a bool vector with SIZE bits. */ |
df5b4930 PE |
998 | |
999 | INLINE EMACS_INT | |
1000 | bool_vector_words (EMACS_INT size) | |
1001 | { | |
1002 | eassume (0 <= size && size <= EMACS_INT_MAX - (BITS_PER_BITS_WORD - 1)); | |
1003 | return (size + BITS_PER_BITS_WORD - 1) / BITS_PER_BITS_WORD; | |
1004 | } | |
1005 | ||
2cf00efc PE |
1006 | INLINE EMACS_INT |
1007 | bool_vector_bytes (EMACS_INT size) | |
1008 | { | |
1009 | eassume (0 <= size && size <= EMACS_INT_MAX - (BITS_PER_BITS_WORD - 1)); | |
1010 | return (size + BOOL_VECTOR_BITS_PER_CHAR - 1) / BOOL_VECTOR_BITS_PER_CHAR; | |
1011 | } | |
1012 | ||
df5b4930 PE |
1013 | /* True if A's Ith bit is set. */ |
1014 | ||
1015 | INLINE bool | |
1016 | bool_vector_bitref (Lisp_Object a, EMACS_INT i) | |
1017 | { | |
1018 | eassume (0 <= i && i < bool_vector_size (a)); | |
1019 | return !! (bool_vector_uchar_data (a)[i / BOOL_VECTOR_BITS_PER_CHAR] | |
1020 | & (1 << (i % BOOL_VECTOR_BITS_PER_CHAR))); | |
1021 | } | |
1022 | ||
1023 | INLINE Lisp_Object | |
1024 | bool_vector_ref (Lisp_Object a, EMACS_INT i) | |
1025 | { | |
1026 | return bool_vector_bitref (a, i) ? Qt : Qnil; | |
1027 | } | |
1028 | ||
1029 | /* Set A's Ith bit to B. */ | |
1030 | ||
1031 | INLINE void | |
1032 | bool_vector_set (Lisp_Object a, EMACS_INT i, bool b) | |
1033 | { | |
1034 | unsigned char *addr; | |
1035 | ||
1036 | eassume (0 <= i && i < bool_vector_size (a)); | |
1037 | addr = &bool_vector_uchar_data (a)[i / BOOL_VECTOR_BITS_PER_CHAR]; | |
1038 | ||
1039 | if (b) | |
1040 | *addr |= 1 << (i % BOOL_VECTOR_BITS_PER_CHAR); | |
1041 | else | |
1042 | *addr &= ~ (1 << (i % BOOL_VECTOR_BITS_PER_CHAR)); | |
1043 | } | |
1044 | ||
663e2b3f DA |
1045 | /* Some handy constants for calculating sizes |
1046 | and offsets, mostly of vectorlike objects. */ | |
1047 | ||
1048 | enum | |
1049 | { | |
91f2d272 | 1050 | header_size = offsetof (struct Lisp_Vector, contents), |
663e2b3f DA |
1051 | bool_header_size = offsetof (struct Lisp_Bool_Vector, data), |
1052 | word_size = sizeof (Lisp_Object) | |
1053 | }; | |
1054 | ||
84575e67 PE |
1055 | /* Conveniences for dealing with Lisp arrays. */ |
1056 | ||
00382e8b | 1057 | INLINE Lisp_Object |
84575e67 PE |
1058 | AREF (Lisp_Object array, ptrdiff_t idx) |
1059 | { | |
91f2d272 | 1060 | return XVECTOR (array)->contents[idx]; |
84575e67 PE |
1061 | } |
1062 | ||
00382e8b | 1063 | INLINE Lisp_Object * |
84575e67 PE |
1064 | aref_addr (Lisp_Object array, ptrdiff_t idx) |
1065 | { | |
91f2d272 | 1066 | return & XVECTOR (array)->contents[idx]; |
84575e67 PE |
1067 | } |
1068 | ||
00382e8b | 1069 | INLINE ptrdiff_t |
84575e67 PE |
1070 | ASIZE (Lisp_Object array) |
1071 | { | |
1072 | return XVECTOR (array)->header.size; | |
1073 | } | |
1074 | ||
00382e8b | 1075 | INLINE void |
84575e67 PE |
1076 | ASET (Lisp_Object array, ptrdiff_t idx, Lisp_Object val) |
1077 | { | |
1078 | eassert (0 <= idx && idx < ASIZE (array)); | |
91f2d272 | 1079 | XVECTOR (array)->contents[idx] = val; |
84575e67 PE |
1080 | } |
1081 | ||
00382e8b | 1082 | INLINE void |
84575e67 PE |
1083 | gc_aset (Lisp_Object array, ptrdiff_t idx, Lisp_Object val) |
1084 | { | |
1085 | /* Like ASET, but also can be used in the garbage collector: | |
1086 | sweep_weak_table calls set_hash_key etc. while the table is marked. */ | |
f2b0b0d1 | 1087 | eassert (0 <= idx && idx < (ASIZE (array))); |
91f2d272 | 1088 | XVECTOR (array)->contents[idx] = val; |
84575e67 PE |
1089 | } |
1090 | ||
94225242 | 1091 | /* If a struct is made to look like a vector, this macro returns the length |
4115d3f7 | 1092 | of the shortest vector that would hold that struct. */ |
663e2b3f DA |
1093 | |
1094 | #define VECSIZE(type) \ | |
1095 | ((sizeof (type) - header_size + word_size - 1) / word_size) | |
94225242 | 1096 | |
d0ebe33a SM |
1097 | /* Like VECSIZE, but used when the pseudo-vector has non-Lisp_Object fields |
1098 | at the end and we need to compute the number of Lisp_Object fields (the | |
1099 | ones that the GC needs to trace). */ | |
663e2b3f DA |
1100 | |
1101 | #define PSEUDOVECSIZE(type, nonlispfield) \ | |
1102 | ((offsetof (type, nonlispfield) - header_size) / word_size) | |
d0ebe33a | 1103 | |
ea204efb PE |
1104 | /* Compute A OP B, using the unsigned comparison operator OP. A and B |
1105 | should be integer expressions. This is not the same as | |
53964682 | 1106 | mathematical comparison; for example, UNSIGNED_CMP (0, <, -1) |
96c06863 | 1107 | returns true. For efficiency, prefer plain unsigned comparison if A |
ea204efb PE |
1108 | and B's sizes both fit (after integer promotion). */ |
1109 | #define UNSIGNED_CMP(a, op, b) \ | |
1110 | (max (sizeof ((a) + 0), sizeof ((b) + 0)) <= sizeof (unsigned) \ | |
1111 | ? ((a) + (unsigned) 0) op ((b) + (unsigned) 0) \ | |
1112 | : ((a) + (uintmax_t) 0) op ((b) + (uintmax_t) 0)) | |
1113 | ||
96c06863 | 1114 | /* True iff C is an ASCII character. */ |
ea204efb | 1115 | #define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80) |
15206ed9 | 1116 | |
84575e67 PE |
1117 | /* A char-table is a kind of vectorlike, with contents are like a |
1118 | vector but with a few other slots. For some purposes, it makes | |
1119 | sense to handle a char-table with type struct Lisp_Vector. An | |
1120 | element of a char table can be any Lisp objects, but if it is a sub | |
1121 | char-table, we treat it a table that contains information of a | |
1122 | specific range of characters. A sub char-table has the same | |
1123 | structure as a vector. A sub char table appears only in an element | |
1124 | of a char-table, and there's no way to access it directly from | |
1125 | Emacs Lisp program. */ | |
1842abb2 | 1126 | |
03a660a6 PE |
1127 | enum CHARTAB_SIZE_BITS |
1128 | { | |
1129 | CHARTAB_SIZE_BITS_0 = 6, | |
1130 | CHARTAB_SIZE_BITS_1 = 4, | |
1131 | CHARTAB_SIZE_BITS_2 = 5, | |
1132 | CHARTAB_SIZE_BITS_3 = 7 | |
1133 | }; | |
1842abb2 KH |
1134 | |
1135 | extern const int chartab_size[4]; | |
1136 | ||
608ff985 RS |
1137 | struct Lisp_Char_Table |
1138 | { | |
eab3844f | 1139 | /* HEADER.SIZE is the vector's size field, which also holds the |
608ff985 | 1140 | pseudovector type information. It holds the size, too. |
c73bd236 MB |
1141 | The size counts the defalt, parent, purpose, ascii, |
1142 | contents, and extras slots. */ | |
b102ceb1 | 1143 | struct vectorlike_header header; |
1842abb2 | 1144 | |
608ff985 RS |
1145 | /* This holds a default value, |
1146 | which is used whenever the value for a specific character is nil. */ | |
1147 | Lisp_Object defalt; | |
ea724a01 | 1148 | |
8f924df7 KH |
1149 | /* This points to another char table, which we inherit from when the |
1150 | value for a specific character is nil. The `defalt' slot takes | |
1151 | precedence over this. */ | |
608ff985 | 1152 | Lisp_Object parent; |
1842abb2 | 1153 | |
8f924df7 KH |
1154 | /* This is a symbol which says what kind of use this char-table is |
1155 | meant for. */ | |
7f73dc9d | 1156 | Lisp_Object purpose; |
1842abb2 | 1157 | |
8f924df7 KH |
1158 | /* The bottom sub char-table for characters of the range 0..127. It |
1159 | is nil if none of ASCII character has a specific value. */ | |
1160 | Lisp_Object ascii; | |
1842abb2 | 1161 | |
8f924df7 | 1162 | Lisp_Object contents[(1 << CHARTAB_SIZE_BITS_0)]; |
1842abb2 | 1163 | |
8f924df7 | 1164 | /* These hold additional data. It is a vector. */ |
fbe9e0b9 | 1165 | Lisp_Object extras[FLEXIBLE_ARRAY_MEMBER]; |
608ff985 RS |
1166 | }; |
1167 | ||
1842abb2 | 1168 | struct Lisp_Sub_Char_Table |
8f924df7 | 1169 | { |
eab3844f | 1170 | /* HEADER.SIZE is the vector's size field, which also holds the |
8f924df7 | 1171 | pseudovector type information. It holds the size, too. */ |
b102ceb1 | 1172 | struct vectorlike_header header; |
1842abb2 | 1173 | |
8f924df7 | 1174 | /* Depth of this sub char-table. It should be 1, 2, or 3. A sub |
78edd3b7 | 1175 | char-table of depth 1 contains 16 elements, and each element |
8f924df7 KH |
1176 | covers 4096 (128*32) characters. A sub char-table of depth 2 |
1177 | contains 32 elements, and each element covers 128 characters. A | |
1178 | sub char-table of depth 3 contains 128 elements, and each element | |
1179 | is for one character. */ | |
1180 | Lisp_Object depth; | |
1842abb2 | 1181 | |
8f924df7 KH |
1182 | /* Minimum character covered by the sub char-table. */ |
1183 | Lisp_Object min_char; | |
1842abb2 | 1184 | |
34dabdb7 | 1185 | /* Use set_sub_char_table_contents to set this. */ |
fbe9e0b9 | 1186 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
8f924df7 | 1187 | }; |
608ff985 | 1188 | |
00382e8b | 1189 | INLINE Lisp_Object |
84575e67 PE |
1190 | CHAR_TABLE_REF_ASCII (Lisp_Object ct, ptrdiff_t idx) |
1191 | { | |
1192 | struct Lisp_Char_Table *tbl = NULL; | |
1193 | Lisp_Object val; | |
1194 | do | |
1195 | { | |
1196 | tbl = tbl ? XCHAR_TABLE (tbl->parent) : XCHAR_TABLE (ct); | |
1197 | val = (! SUB_CHAR_TABLE_P (tbl->ascii) ? tbl->ascii | |
1198 | : XSUB_CHAR_TABLE (tbl->ascii)->contents[idx]); | |
1199 | if (NILP (val)) | |
1200 | val = tbl->defalt; | |
1201 | } | |
1202 | while (NILP (val) && ! NILP (tbl->parent)); | |
1203 | ||
1204 | return val; | |
1205 | } | |
1206 | ||
1207 | /* Almost equivalent to Faref (CT, IDX) with optimization for ASCII | |
1208 | characters. Do not check validity of CT. */ | |
00382e8b | 1209 | INLINE Lisp_Object |
84575e67 PE |
1210 | CHAR_TABLE_REF (Lisp_Object ct, int idx) |
1211 | { | |
1212 | return (ASCII_CHAR_P (idx) | |
1213 | ? CHAR_TABLE_REF_ASCII (ct, idx) | |
1214 | : char_table_ref (ct, idx)); | |
1215 | } | |
1216 | ||
1217 | /* Equivalent to Faset (CT, IDX, VAL) with optimization for ASCII and | |
1218 | 8-bit European characters. Do not check validity of CT. */ | |
00382e8b | 1219 | INLINE void |
84575e67 PE |
1220 | CHAR_TABLE_SET (Lisp_Object ct, int idx, Lisp_Object val) |
1221 | { | |
1222 | if (ASCII_CHAR_P (idx) && SUB_CHAR_TABLE_P (XCHAR_TABLE (ct)->ascii)) | |
1223 | set_sub_char_table_contents (XCHAR_TABLE (ct)->ascii, idx, val); | |
1224 | else | |
1225 | char_table_set (ct, idx, val); | |
1226 | } | |
1227 | ||
03a660a6 PE |
1228 | /* This is the number of slots that every char table must have. This |
1229 | counts the ordinary slots and the top, defalt, parent, and purpose | |
1230 | slots. */ | |
1231 | enum CHAR_TABLE_STANDARD_SLOTS | |
1232 | { | |
fbe9e0b9 | 1233 | CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras) |
03a660a6 PE |
1234 | }; |
1235 | ||
1236 | /* Return the number of "extra" slots in the char table CT. */ | |
1237 | ||
00382e8b | 1238 | INLINE int |
84575e67 PE |
1239 | CHAR_TABLE_EXTRA_SLOTS (struct Lisp_Char_Table *ct) |
1240 | { | |
1241 | return ((ct->header.size & PSEUDOVECTOR_SIZE_MASK) | |
1242 | - CHAR_TABLE_STANDARD_SLOTS); | |
1243 | } | |
03a660a6 | 1244 | |
5010d3b8 | 1245 | \f |
a32fa736 GM |
1246 | /*********************************************************************** |
1247 | Symbols | |
1248 | ***********************************************************************/ | |
1249 | ||
ce5b453a SM |
1250 | enum symbol_redirect |
1251 | { | |
1252 | SYMBOL_PLAINVAL = 4, | |
1253 | SYMBOL_VARALIAS = 1, | |
1254 | SYMBOL_LOCALIZED = 2, | |
9aba6043 | 1255 | SYMBOL_FORWARDED = 3 |
ce5b453a SM |
1256 | }; |
1257 | ||
a32fa736 GM |
1258 | struct Lisp_Symbol |
1259 | { | |
844e0de1 | 1260 | Lisp_Object self_; |
49609976 | 1261 | |
ce5b453a SM |
1262 | /* Indicates where the value can be found: |
1263 | 0 : it's a plain var, the value is in the `value' field. | |
1264 | 1 : it's a varalias, the value is really in the `alias' symbol. | |
1265 | 2 : it's a localized var, the value is in the `blv' object. | |
9aba6043 | 1266 | 3 : it's a forwarding variable, the value is in `forward'. */ |
844e0de1 | 1267 | ENUM_BF (symbol_redirect) redirect_ : 3; |
a32fa736 GM |
1268 | |
1269 | /* Non-zero means symbol is constant, i.e. changing its value | |
ce5b453a SM |
1270 | should signal an error. If the value is 3, then the var |
1271 | can be changed, but only by `defconst'. */ | |
844e0de1 | 1272 | unsigned constant_ : 2; |
a32fa736 | 1273 | |
96c06863 | 1274 | /* True means that this variable has been explicitly declared |
b9598260 | 1275 | special (with `defvar' etc), and shouldn't be lexically bound. */ |
844e0de1 | 1276 | bool_bf declared_special_ : 1; |
e3b83880 | 1277 | |
9aba6043 SM |
1278 | /* Value of the symbol or Qunbound if unbound. Which alternative of the |
1279 | union is used depends on the `redirect' field above. */ | |
ce5b453a | 1280 | union { |
844e0de1 BT |
1281 | Lisp_Object value_; |
1282 | sym_t alias_; | |
1283 | struct Lisp_Buffer_Local_Value *blv_; | |
1284 | union Lisp_Fwd *fwd_; | |
1285 | }; | |
a32fa736 GM |
1286 | }; |
1287 | ||
844e0de1 BT |
1288 | #define SYMBOL_SELF(sym) (scm_c_vector_ref (sym, 0)) |
1289 | #define SET_SYMBOL_SELF(sym, v) (scm_c_vector_set_x (sym, 0, v)) | |
1290 | #define SYMBOL_REDIRECT(sym) (XINT (scm_c_vector_ref (sym, 1))) | |
1291 | #define SET_SYMBOL_REDIRECT(sym, v) (scm_c_vector_set_x (sym, 1, make_number (v))) | |
1292 | #define SYMBOL_CONSTANT(sym) (XINT (scm_c_vector_ref (sym, 2))) | |
1293 | #define SET_SYMBOL_CONSTANT(sym, v) (scm_c_vector_set_x (sym, 2, make_number (v))) | |
1294 | #define SYMBOL_DECLARED_SPECIAL(sym) (XINT (scm_c_vector_ref (sym, 3))) | |
1295 | #define SET_SYMBOL_DECLARED_SPECIAL(sym, v) (scm_c_vector_set_x (sym, 3, make_number (v))) | |
74d70085 | 1296 | |
844e0de1 | 1297 | /* Value is name of symbol. */ |
ce5b453a | 1298 | |
844e0de1 BT |
1299 | INLINE sym_t |
1300 | SYMBOL_ALIAS (sym_t sym) | |
84575e67 | 1301 | { |
844e0de1 BT |
1302 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_VARALIAS); |
1303 | return scm_c_vector_ref (sym, 4); | |
84575e67 | 1304 | } |
00382e8b | 1305 | INLINE struct Lisp_Buffer_Local_Value * |
844e0de1 | 1306 | SYMBOL_BLV (sym_t sym) |
84575e67 | 1307 | { |
844e0de1 BT |
1308 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_LOCALIZED); |
1309 | return scm_to_pointer (scm_c_vector_ref (sym, 4)); | |
84575e67 | 1310 | } |
00382e8b | 1311 | INLINE union Lisp_Fwd * |
844e0de1 | 1312 | SYMBOL_FWD (sym_t sym) |
84575e67 | 1313 | { |
844e0de1 BT |
1314 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_FORWARDED); |
1315 | return scm_to_pointer (scm_c_vector_ref (sym, 4)); | |
84575e67 | 1316 | } |
74d70085 | 1317 | |
84575e67 | 1318 | LISP_MACRO_DEFUN_VOID (SET_SYMBOL_VAL, |
844e0de1 | 1319 | (sym_t sym, Lisp_Object v), (sym, v)) |
a32fa736 | 1320 | |
00382e8b | 1321 | INLINE void |
844e0de1 | 1322 | SET_SYMBOL_ALIAS (sym_t sym, sym_t v) |
84575e67 | 1323 | { |
844e0de1 BT |
1324 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_VARALIAS); |
1325 | scm_c_vector_set_x (sym, 4, v); | |
84575e67 | 1326 | } |
00382e8b | 1327 | INLINE void |
844e0de1 | 1328 | SET_SYMBOL_BLV (sym_t sym, struct Lisp_Buffer_Local_Value *v) |
84575e67 | 1329 | { |
844e0de1 BT |
1330 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_LOCALIZED); |
1331 | scm_c_vector_set_x (sym, 4, scm_from_pointer (v, NULL)); | |
84575e67 | 1332 | } |
00382e8b | 1333 | INLINE void |
844e0de1 | 1334 | SET_SYMBOL_FWD (sym_t sym, union Lisp_Fwd *v) |
84575e67 | 1335 | { |
844e0de1 BT |
1336 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_FORWARDED); |
1337 | scm_c_vector_set_x (sym, 4, scm_from_pointer (v, NULL)); | |
84575e67 PE |
1338 | } |
1339 | ||
00382e8b | 1340 | INLINE Lisp_Object |
84575e67 PE |
1341 | SYMBOL_NAME (Lisp_Object sym) |
1342 | { | |
d1c3da7b | 1343 | return build_string (scm_to_locale_string (scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-name"), sym))); |
84575e67 PE |
1344 | } |
1345 | ||
1346 | /* Value is true if SYM is an interned symbol. */ | |
1347 | ||
00382e8b | 1348 | INLINE bool |
84575e67 PE |
1349 | SYMBOL_INTERNED_P (Lisp_Object sym) |
1350 | { | |
d1c3da7b BT |
1351 | if (EQ (sym, Qnil)) return true; |
1352 | if (EQ (sym, Qt)) return true; | |
42c30833 | 1353 | return scm_is_true (scm_symbol_interned_p (sym)); |
84575e67 | 1354 | } |
a32fa736 | 1355 | |
1d59fbe3 BT |
1356 | INLINE Lisp_Object |
1357 | SYMBOL_FUNCTION (Lisp_Object sym) | |
1358 | { | |
d1c3da7b | 1359 | return scm_call_1 (scm_c_public_ref ("elisp-functions", "symbol-function"), sym); |
1d59fbe3 BT |
1360 | } |
1361 | ||
a32fa736 GM |
1362 | /* Value is non-zero if symbol is considered a constant, i.e. its |
1363 | value cannot be changed (there is an exception for keyword symbols, | |
1364 | whose value can be set to the keyword symbol itself). */ | |
1365 | ||
84575e67 | 1366 | LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P, int, (Lisp_Object sym), (sym)) |
a32fa736 | 1367 | |
c644523b | 1368 | #define DEFSYM(sym, name) \ |
96c06863 | 1369 | do { (sym) = intern_c_string ((name)); staticpro (&(sym)); } while (false) |
cd3520a4 | 1370 | |
844e0de1 BT |
1371 | LISP_MACRO_DEFUN (SYMBOL_VAL, Lisp_Object, (sym_t sym), (sym)) |
1372 | ||
a32fa736 | 1373 | \f |
5010d3b8 GM |
1374 | /*********************************************************************** |
1375 | Hash Tables | |
1376 | ***********************************************************************/ | |
1377 | ||
1378 | /* The structure of a Lisp hash table. */ | |
1379 | ||
b7432bb2 SM |
1380 | struct hash_table_test |
1381 | { | |
1382 | /* Name of the function used to compare keys. */ | |
1383 | Lisp_Object name; | |
1384 | ||
1385 | /* User-supplied hash function, or nil. */ | |
1386 | Lisp_Object user_hash_function; | |
1387 | ||
1388 | /* User-supplied key comparison function, or nil. */ | |
1389 | Lisp_Object user_cmp_function; | |
1390 | ||
1391 | /* C function to compare two keys. */ | |
1392 | bool (*cmpfn) (struct hash_table_test *t, Lisp_Object, Lisp_Object); | |
1393 | ||
1394 | /* C function to compute hash code. */ | |
1395 | EMACS_UINT (*hashfn) (struct hash_table_test *t, Lisp_Object); | |
1396 | }; | |
1397 | ||
5010d3b8 GM |
1398 | struct Lisp_Hash_Table |
1399 | { | |
eab3844f | 1400 | /* This is for Lisp; the hash table code does not refer to it. */ |
b102ceb1 | 1401 | struct vectorlike_header header; |
e2c0561e | 1402 | |
5010d3b8 GM |
1403 | /* Nil if table is non-weak. Otherwise a symbol describing the |
1404 | weakness of the table. */ | |
1405 | Lisp_Object weak; | |
e2c0561e | 1406 | |
5010d3b8 GM |
1407 | /* When the table is resized, and this is an integer, compute the |
1408 | new size by adding this to the old size. If a float, compute the | |
1409 | new size by multiplying the old size with this factor. */ | |
1410 | Lisp_Object rehash_size; | |
1411 | ||
1412 | /* Resize hash table when number of entries/ table size is >= this | |
1413 | ratio, a float. */ | |
1414 | Lisp_Object rehash_threshold; | |
1415 | ||
5833dd93 EZ |
1416 | /* Vector of hash codes. If hash[I] is nil, this means that the |
1417 | I-th entry is unused. */ | |
5010d3b8 GM |
1418 | Lisp_Object hash; |
1419 | ||
1420 | /* Vector used to chain entries. If entry I is free, next[I] is the | |
1421 | entry number of the next free item. If entry I is non-free, | |
1422 | next[I] is the index of the next entry in the collision chain. */ | |
1423 | Lisp_Object next; | |
1424 | ||
1425 | /* Index of first free entry in free list. */ | |
1426 | Lisp_Object next_free; | |
1427 | ||
1428 | /* Bucket vector. A non-nil entry is the index of the first item in | |
1429 | a collision chain. This vector's size can be larger than the | |
1430 | hash table size to reduce collisions. */ | |
1431 | Lisp_Object index; | |
1432 | ||
878f97ff | 1433 | /* Only the fields above are traced normally by the GC. The ones below |
78edd3b7 | 1434 | `count' are special and are either ignored by the GC or traced in |
878f97ff SM |
1435 | a special way (e.g. because of weakness). */ |
1436 | ||
1437 | /* Number of key/value entries in the table. */ | |
d311d28c | 1438 | ptrdiff_t count; |
878f97ff SM |
1439 | |
1440 | /* Vector of keys and values. The key of item I is found at index | |
1441 | 2 * I, the value is found at index 2 * I + 1. | |
1442 | This is gc_marked specially if the table is weak. */ | |
1443 | Lisp_Object key_and_value; | |
1444 | ||
b7432bb2 SM |
1445 | /* The comparison and hash functions. */ |
1446 | struct hash_table_test test; | |
1447 | ||
6c661ec9 SM |
1448 | /* Next weak hash table if this is a weak hash table. The head |
1449 | of the list is in weak_hash_tables. */ | |
1450 | struct Lisp_Hash_Table *next_weak; | |
5010d3b8 GM |
1451 | }; |
1452 | ||
1453 | ||
00382e8b | 1454 | INLINE struct Lisp_Hash_Table * |
84575e67 PE |
1455 | XHASH_TABLE (Lisp_Object a) |
1456 | { | |
49609976 | 1457 | return SMOB_PTR (a); |
84575e67 | 1458 | } |
5010d3b8 GM |
1459 | |
1460 | #define XSET_HASH_TABLE(VAR, PTR) \ | |
1461 | (XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE)) | |
1462 | ||
00382e8b | 1463 | INLINE bool |
84575e67 PE |
1464 | HASH_TABLE_P (Lisp_Object a) |
1465 | { | |
1466 | return PSEUDOVECTORP (a, PVEC_HASH_TABLE); | |
1467 | } | |
5010d3b8 | 1468 | |
141788b5 | 1469 | /* Value is the key part of entry IDX in hash table H. */ |
00382e8b | 1470 | INLINE Lisp_Object |
84575e67 PE |
1471 | HASH_KEY (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
1472 | { | |
1473 | return AREF (h->key_and_value, 2 * idx); | |
1474 | } | |
141788b5 SM |
1475 | |
1476 | /* Value is the value part of entry IDX in hash table H. */ | |
00382e8b | 1477 | INLINE Lisp_Object |
84575e67 PE |
1478 | HASH_VALUE (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
1479 | { | |
1480 | return AREF (h->key_and_value, 2 * idx + 1); | |
1481 | } | |
141788b5 SM |
1482 | |
1483 | /* Value is the index of the next entry following the one at IDX | |
1484 | in hash table H. */ | |
00382e8b | 1485 | INLINE Lisp_Object |
84575e67 PE |
1486 | HASH_NEXT (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
1487 | { | |
1488 | return AREF (h->next, idx); | |
1489 | } | |
141788b5 SM |
1490 | |
1491 | /* Value is the hash code computed for entry IDX in hash table H. */ | |
00382e8b | 1492 | INLINE Lisp_Object |
84575e67 PE |
1493 | HASH_HASH (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
1494 | { | |
1495 | return AREF (h->hash, idx); | |
1496 | } | |
141788b5 SM |
1497 | |
1498 | /* Value is the index of the element in hash table H that is the | |
1499 | start of the collision list at index IDX in the index vector of H. */ | |
00382e8b | 1500 | INLINE Lisp_Object |
84575e67 PE |
1501 | HASH_INDEX (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
1502 | { | |
1503 | return AREF (h->index, idx); | |
1504 | } | |
141788b5 SM |
1505 | |
1506 | /* Value is the size of hash table H. */ | |
00382e8b | 1507 | INLINE ptrdiff_t |
84575e67 PE |
1508 | HASH_TABLE_SIZE (struct Lisp_Hash_Table *h) |
1509 | { | |
1510 | return ASIZE (h->next); | |
1511 | } | |
141788b5 | 1512 | |
5010d3b8 GM |
1513 | /* Default size for hash tables if not specified. */ |
1514 | ||
03a660a6 | 1515 | enum DEFAULT_HASH_SIZE { DEFAULT_HASH_SIZE = 65 }; |
5010d3b8 GM |
1516 | |
1517 | /* Default threshold specifying when to resize a hash table. The | |
1518 | value gives the ratio of current entries in the hash table and the | |
1519 | size of the hash table. */ | |
1520 | ||
185ee146 | 1521 | static double const DEFAULT_REHASH_THRESHOLD = 0.8; |
5010d3b8 GM |
1522 | |
1523 | /* Default factor by which to increase the size of a hash table. */ | |
1524 | ||
185ee146 | 1525 | static double const DEFAULT_REHASH_SIZE = 1.5; |
5010d3b8 | 1526 | |
04a2d0d3 PE |
1527 | /* Combine two integers X and Y for hashing. The result might not fit |
1528 | into a Lisp integer. */ | |
1529 | ||
00382e8b | 1530 | INLINE EMACS_UINT |
04a2d0d3 PE |
1531 | sxhash_combine (EMACS_UINT x, EMACS_UINT y) |
1532 | { | |
1533 | return (x << 4) + (x >> (BITS_PER_EMACS_INT - 4)) + y; | |
1534 | } | |
1535 | ||
eff1c190 PE |
1536 | /* Hash X, returning a value that fits into a fixnum. */ |
1537 | ||
00382e8b | 1538 | INLINE EMACS_UINT |
eff1c190 PE |
1539 | SXHASH_REDUCE (EMACS_UINT x) |
1540 | { | |
49609976 | 1541 | return (x ^ x >> (BITS_PER_EMACS_INT - FIXNUM_BITS + 1)) & INTMASK; |
eff1c190 PE |
1542 | } |
1543 | ||
7c06ac2b RS |
1544 | /* These structures are used for various misc types. */ |
1545 | ||
67ee9f6e SM |
1546 | struct Lisp_Misc_Any /* Supertype of all Misc types. */ |
1547 | { | |
49609976 | 1548 | Lisp_Object self; |
a6fc3b5c | 1549 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_??? */ |
67ee9f6e SM |
1550 | }; |
1551 | ||
3cfe6dfd | 1552 | struct Lisp_Marker |
308e97d0 | 1553 | { |
49609976 | 1554 | Lisp_Object self; |
a6fc3b5c | 1555 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Marker */ |
9bb13d08 KH |
1556 | /* This flag is temporarily used in the functions |
1557 | decode/encode_coding_object to record that the marker position | |
1558 | must be adjusted after the conversion. */ | |
96c06863 PE |
1559 | bool_bf need_adjustment : 1; |
1560 | /* True means normal insertion at the marker's position | |
308e97d0 | 1561 | leaves the marker after the inserted text. */ |
96c06863 | 1562 | bool_bf insertion_type : 1; |
b9466edb SM |
1563 | /* This is the buffer that the marker points into, or 0 if it points nowhere. |
1564 | Note: a chain of markers can contain markers pointing into different | |
1565 | buffers (the chain is per buffer_text rather than per buffer, so it's | |
1566 | shared between indirect buffers). */ | |
1567 | /* This is used for (other than NULL-checking): | |
1568 | - Fmarker_buffer | |
1569 | - Fset_marker: check eq(oldbuf, newbuf) to avoid unchain+rechain. | |
1570 | - unchain_marker: to find the list from which to unchain. | |
ce5b453a | 1571 | - Fkill_buffer: to only unchain the markers of current indirect buffer. |
b9466edb | 1572 | */ |
308e97d0 | 1573 | struct buffer *buffer; |
4ed24bf3 RS |
1574 | |
1575 | /* The remaining fields are meaningless in a marker that | |
1576 | does not point anywhere. */ | |
1577 | ||
1578 | /* For markers that point somewhere, | |
1579 | this is used to chain of all the markers in a given buffer. */ | |
d6aa1876 SM |
1580 | /* We could remove it and use an array in buffer_text instead. |
1581 | That would also allow to preserve it ordered. */ | |
c0ac2f4a | 1582 | struct Lisp_Marker *next; |
4ed24bf3 | 1583 | /* This is the char position where the marker points. */ |
d311d28c | 1584 | ptrdiff_t charpos; |
ce5b453a SM |
1585 | /* This is the byte position. |
1586 | It's mostly used as a charpos<->bytepos cache (i.e. it's not directly | |
1587 | used to implement the functionality of markers, but rather to (ab)use | |
1588 | markers as a cache for char<->byte mappings). */ | |
d311d28c | 1589 | ptrdiff_t bytepos; |
308e97d0 | 1590 | }; |
3cfe6dfd | 1591 | |
7555c33f SM |
1592 | /* START and END are markers in the overlay's buffer, and |
1593 | PLIST is the overlay's property list. */ | |
1594 | struct Lisp_Overlay | |
fa691a83 DA |
1595 | /* An overlay's real data content is: |
1596 | - plist | |
1597 | - buffer (really there are two buffer pointers, one per marker, | |
1598 | and both points to the same buffer) | |
1599 | - insertion type of both ends (per-marker fields) | |
1600 | - start & start byte (of start marker) | |
1601 | - end & end byte (of end marker) | |
1602 | - next (singly linked list of overlays) | |
1603 | - next fields of start and end markers (singly linked list of markers). | |
1604 | I.e. 9words plus 2 bits, 3words of which are for external linked lists. | |
1605 | */ | |
7555c33f | 1606 | { |
49609976 | 1607 | Lisp_Object self; |
7555c33f | 1608 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Overlay */ |
7555c33f | 1609 | struct Lisp_Overlay *next; |
c644523b DA |
1610 | Lisp_Object start; |
1611 | Lisp_Object end; | |
1612 | Lisp_Object plist; | |
7555c33f SM |
1613 | }; |
1614 | ||
73ebd38f DA |
1615 | /* Types of data which may be saved in a Lisp_Save_Value. */ |
1616 | ||
1617 | enum | |
1618 | { | |
1619 | SAVE_UNUSED, | |
1620 | SAVE_INTEGER, | |
52a9bcae | 1621 | SAVE_FUNCPOINTER, |
73ebd38f DA |
1622 | SAVE_POINTER, |
1623 | SAVE_OBJECT | |
1624 | }; | |
1625 | ||
7b1123d8 | 1626 | /* Number of bits needed to store one of the above values. */ |
52a9bcae | 1627 | enum { SAVE_SLOT_BITS = 3 }; |
7b1123d8 PE |
1628 | |
1629 | /* Number of slots in a save value where save_type is nonzero. */ | |
1630 | enum { SAVE_VALUE_SLOTS = 4 }; | |
1631 | ||
1632 | /* Bit-width and values for struct Lisp_Save_Value's save_type member. */ | |
1633 | ||
1634 | enum { SAVE_TYPE_BITS = SAVE_VALUE_SLOTS * SAVE_SLOT_BITS + 1 }; | |
1635 | ||
1636 | enum Lisp_Save_Type | |
1637 | { | |
1638 | SAVE_TYPE_INT_INT = SAVE_INTEGER + (SAVE_INTEGER << SAVE_SLOT_BITS), | |
1639 | SAVE_TYPE_INT_INT_INT | |
1640 | = (SAVE_INTEGER + (SAVE_TYPE_INT_INT << SAVE_SLOT_BITS)), | |
1641 | SAVE_TYPE_OBJ_OBJ = SAVE_OBJECT + (SAVE_OBJECT << SAVE_SLOT_BITS), | |
1642 | SAVE_TYPE_OBJ_OBJ_OBJ = SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ << SAVE_SLOT_BITS), | |
1643 | SAVE_TYPE_OBJ_OBJ_OBJ_OBJ | |
1644 | = SAVE_OBJECT + (SAVE_TYPE_OBJ_OBJ_OBJ << SAVE_SLOT_BITS), | |
1645 | SAVE_TYPE_PTR_INT = SAVE_POINTER + (SAVE_INTEGER << SAVE_SLOT_BITS), | |
1646 | SAVE_TYPE_PTR_OBJ = SAVE_POINTER + (SAVE_OBJECT << SAVE_SLOT_BITS), | |
1647 | SAVE_TYPE_PTR_PTR = SAVE_POINTER + (SAVE_POINTER << SAVE_SLOT_BITS), | |
52a9bcae PE |
1648 | SAVE_TYPE_FUNCPTR_PTR_OBJ |
1649 | = SAVE_FUNCPOINTER + (SAVE_TYPE_PTR_OBJ << SAVE_SLOT_BITS), | |
7b1123d8 PE |
1650 | |
1651 | /* This has an extra bit indicating it's raw memory. */ | |
1652 | SAVE_TYPE_MEMORY = SAVE_TYPE_PTR_INT + (1 << (SAVE_TYPE_BITS - 1)) | |
1653 | }; | |
1654 | ||
468afbac DA |
1655 | /* Special object used to hold a different values for later use. |
1656 | ||
1657 | This is mostly used to package C integers and pointers to call | |
27e498e6 | 1658 | record_unwind_protect when two or more values need to be saved. |
1396ac86 | 1659 | For example: |
468afbac DA |
1660 | |
1661 | ... | |
1662 | struct my_data *md = get_my_data (); | |
1396ac86 PE |
1663 | ptrdiff_t mi = get_my_integer (); |
1664 | record_unwind_protect (my_unwind, make_save_ptr_int (md, mi)); | |
468afbac DA |
1665 | ... |
1666 | ||
1667 | Lisp_Object my_unwind (Lisp_Object arg) | |
1668 | { | |
1669 | struct my_data *md = XSAVE_POINTER (arg, 0); | |
1396ac86 | 1670 | ptrdiff_t mi = XSAVE_INTEGER (arg, 1); |
468afbac DA |
1671 | ... |
1672 | } | |
1673 | ||
1674 | If ENABLE_CHECKING is in effect, XSAVE_xxx macros do type checking of the | |
1675 | saved objects and raise eassert if type of the saved object doesn't match | |
1676 | the type which is extracted. In the example above, XSAVE_INTEGER (arg, 2) | |
1396ac86 PE |
1677 | and XSAVE_OBJECT (arg, 0) are wrong because nothing was saved in slot 2 and |
1678 | slot 0 is a pointer. */ | |
73ebd38f | 1679 | |
52a9bcae PE |
1680 | typedef void (*voidfuncptr) (void); |
1681 | ||
7555c33f SM |
1682 | struct Lisp_Save_Value |
1683 | { | |
49609976 | 1684 | Lisp_Object self; |
7555c33f | 1685 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Save_Value */ |
2bdeb39a | 1686 | unsigned spacer : 32 - (16 + SAVE_TYPE_BITS); |
7b1123d8 | 1687 | |
1396ac86 PE |
1688 | /* V->data may hold up to SAVE_VALUE_SLOTS entries. The type of |
1689 | V's data entries are determined by V->save_type. E.g., if | |
1690 | V->save_type == SAVE_TYPE_PTR_OBJ, V->data[0] is a pointer, | |
1691 | V->data[1] is an integer, and V's other data entries are unused. | |
7b1123d8 | 1692 | |
1396ac86 PE |
1693 | If V->save_type == SAVE_TYPE_MEMORY, V->data[0].pointer is the address of |
1694 | a memory area containing V->data[1].integer potential Lisp_Objects. */ | |
7b1123d8 | 1695 | ENUM_BF (Lisp_Save_Type) save_type : SAVE_TYPE_BITS; |
73ebd38f DA |
1696 | union { |
1697 | void *pointer; | |
52a9bcae | 1698 | voidfuncptr funcpointer; |
73ebd38f DA |
1699 | ptrdiff_t integer; |
1700 | Lisp_Object object; | |
7b1123d8 | 1701 | } data[SAVE_VALUE_SLOTS]; |
7555c33f SM |
1702 | }; |
1703 | ||
84575e67 | 1704 | /* Return the type of V's Nth saved value. */ |
00382e8b | 1705 | INLINE int |
84575e67 PE |
1706 | save_type (struct Lisp_Save_Value *v, int n) |
1707 | { | |
1708 | eassert (0 <= n && n < SAVE_VALUE_SLOTS); | |
1709 | return (v->save_type >> (SAVE_SLOT_BITS * n) & ((1 << SAVE_SLOT_BITS) - 1)); | |
1710 | } | |
1711 | ||
1712 | /* Get and set the Nth saved pointer. */ | |
1713 | ||
00382e8b | 1714 | INLINE void * |
84575e67 PE |
1715 | XSAVE_POINTER (Lisp_Object obj, int n) |
1716 | { | |
1717 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER); | |
52a9bcae | 1718 | return XSAVE_VALUE (obj)->data[n].pointer; |
84575e67 | 1719 | } |
00382e8b | 1720 | INLINE void |
84575e67 PE |
1721 | set_save_pointer (Lisp_Object obj, int n, void *val) |
1722 | { | |
1723 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER); | |
1724 | XSAVE_VALUE (obj)->data[n].pointer = val; | |
1725 | } | |
00382e8b | 1726 | INLINE voidfuncptr |
52a9bcae PE |
1727 | XSAVE_FUNCPOINTER (Lisp_Object obj, int n) |
1728 | { | |
1729 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_FUNCPOINTER); | |
1730 | return XSAVE_VALUE (obj)->data[n].funcpointer; | |
1731 | } | |
84575e67 PE |
1732 | |
1733 | /* Likewise for the saved integer. */ | |
1734 | ||
00382e8b | 1735 | INLINE ptrdiff_t |
84575e67 PE |
1736 | XSAVE_INTEGER (Lisp_Object obj, int n) |
1737 | { | |
1738 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER); | |
1739 | return XSAVE_VALUE (obj)->data[n].integer; | |
1740 | } | |
00382e8b | 1741 | INLINE void |
84575e67 PE |
1742 | set_save_integer (Lisp_Object obj, int n, ptrdiff_t val) |
1743 | { | |
1744 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_INTEGER); | |
1745 | XSAVE_VALUE (obj)->data[n].integer = val; | |
1746 | } | |
1747 | ||
1748 | /* Extract Nth saved object. */ | |
1749 | ||
00382e8b | 1750 | INLINE Lisp_Object |
84575e67 PE |
1751 | XSAVE_OBJECT (Lisp_Object obj, int n) |
1752 | { | |
1753 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_OBJECT); | |
1754 | return XSAVE_VALUE (obj)->data[n].object; | |
1755 | } | |
1756 | ||
7555c33f SM |
1757 | /* To get the type field of a union Lisp_Misc, use XMISCTYPE. |
1758 | It uses one of these struct subtypes to get the type field. */ | |
1759 | ||
1760 | union Lisp_Misc | |
1761 | { | |
1762 | struct Lisp_Misc_Any u_any; /* Supertype of all Misc types. */ | |
7555c33f SM |
1763 | struct Lisp_Marker u_marker; |
1764 | struct Lisp_Overlay u_overlay; | |
1765 | struct Lisp_Save_Value u_save_value; | |
1766 | }; | |
1767 | ||
00382e8b | 1768 | INLINE union Lisp_Misc * |
84575e67 PE |
1769 | XMISC (Lisp_Object a) |
1770 | { | |
49609976 | 1771 | return SMOB_PTR (a); |
84575e67 PE |
1772 | } |
1773 | ||
00382e8b | 1774 | INLINE struct Lisp_Misc_Any * |
84575e67 PE |
1775 | XMISCANY (Lisp_Object a) |
1776 | { | |
1777 | eassert (MISCP (a)); | |
1778 | return & XMISC (a)->u_any; | |
1779 | } | |
1780 | ||
00382e8b | 1781 | INLINE enum Lisp_Misc_Type |
84575e67 PE |
1782 | XMISCTYPE (Lisp_Object a) |
1783 | { | |
1784 | return XMISCANY (a)->type; | |
1785 | } | |
1786 | ||
00382e8b | 1787 | INLINE struct Lisp_Marker * |
84575e67 PE |
1788 | XMARKER (Lisp_Object a) |
1789 | { | |
1790 | eassert (MARKERP (a)); | |
1791 | return & XMISC (a)->u_marker; | |
1792 | } | |
1793 | ||
00382e8b | 1794 | INLINE struct Lisp_Overlay * |
84575e67 PE |
1795 | XOVERLAY (Lisp_Object a) |
1796 | { | |
1797 | eassert (OVERLAYP (a)); | |
1798 | return & XMISC (a)->u_overlay; | |
1799 | } | |
1800 | ||
00382e8b | 1801 | INLINE struct Lisp_Save_Value * |
84575e67 PE |
1802 | XSAVE_VALUE (Lisp_Object a) |
1803 | { | |
1804 | eassert (SAVE_VALUEP (a)); | |
1805 | return & XMISC (a)->u_save_value; | |
1806 | } | |
1807 | \f | |
ee4c9ce4 KH |
1808 | /* Forwarding pointer to an int variable. |
1809 | This is allowed only in the value cell of a symbol, | |
1810 | and it means that the symbol's value really lives in the | |
1811 | specified int variable. */ | |
1812 | struct Lisp_Intfwd | |
84d1833e | 1813 | { |
ce5b453a | 1814 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Int */ |
31ade731 | 1815 | EMACS_INT *intvar; |
ee4c9ce4 KH |
1816 | }; |
1817 | ||
1818 | /* Boolean forwarding pointer to an int variable. | |
1819 | This is like Lisp_Intfwd except that the ostensible | |
96c06863 PE |
1820 | "value" of the symbol is t if the bool variable is true, |
1821 | nil if it is false. */ | |
ee4c9ce4 KH |
1822 | struct Lisp_Boolfwd |
1823 | { | |
ce5b453a | 1824 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Bool */ |
f5d9e83a | 1825 | bool *boolvar; |
ee4c9ce4 KH |
1826 | }; |
1827 | ||
1828 | /* Forwarding pointer to a Lisp_Object variable. | |
1829 | This is allowed only in the value cell of a symbol, | |
1830 | and it means that the symbol's value really lives in the | |
1831 | specified variable. */ | |
1832 | struct Lisp_Objfwd | |
1833 | { | |
ce5b453a | 1834 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Obj */ |
ee4c9ce4 KH |
1835 | Lisp_Object *objvar; |
1836 | }; | |
1837 | ||
1838 | /* Like Lisp_Objfwd except that value lives in a slot in the | |
1839 | current buffer. Value is byte index of slot within buffer. */ | |
1840 | struct Lisp_Buffer_Objfwd | |
1841 | { | |
ce5b453a | 1842 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Buffer_Obj */ |
ee4c9ce4 | 1843 | int offset; |
58cc0a01 DA |
1844 | /* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */ |
1845 | Lisp_Object predicate; | |
84d1833e KH |
1846 | }; |
1847 | ||
65d0110b RS |
1848 | /* struct Lisp_Buffer_Local_Value is used in a symbol value cell when |
1849 | the symbol has buffer-local or frame-local bindings. (Exception: | |
1850 | some buffer-local variables are built-in, with their values stored | |
1851 | in the buffer structure itself. They are handled differently, | |
1852 | using struct Lisp_Buffer_Objfwd.) | |
1853 | ||
1854 | The `realvalue' slot holds the variable's current value, or a | |
1855 | forwarding pointer to where that value is kept. This value is the | |
1856 | one that corresponds to the loaded binding. To read or set the | |
1857 | variable, you must first make sure the right binding is loaded; | |
1858 | then you can access the value in (or through) `realvalue'. | |
e2c0561e | 1859 | |
65d0110b RS |
1860 | `buffer' and `frame' are the buffer and frame for which the loaded |
1861 | binding was found. If those have changed, to make sure the right | |
1862 | binding is loaded it is necessary to find which binding goes with | |
1863 | the current buffer and selected frame, then load it. To load it, | |
1864 | first unload the previous binding, then copy the value of the new | |
1865 | binding into `realvalue' (or through it). Also update | |
1866 | LOADED-BINDING to point to the newly loaded binding. | |
7d65f1c2 | 1867 | |
78edd3b7 JB |
1868 | `local_if_set' indicates that merely setting the variable creates a |
1869 | local binding for the current buffer. Otherwise the latter, setting | |
1870 | the variable does not do that; only make-local-variable does that. */ | |
65d0110b | 1871 | |
7d65f1c2 KH |
1872 | struct Lisp_Buffer_Local_Value |
1873 | { | |
96c06863 | 1874 | /* True means that merely setting the variable creates a local |
7555c33f | 1875 | binding for the current buffer. */ |
96c06863 PE |
1876 | bool_bf local_if_set : 1; |
1877 | /* True means this variable can have frame-local bindings, otherwise, it is | |
ce5b453a | 1878 | can have buffer-local bindings. The two cannot be combined. */ |
96c06863 PE |
1879 | bool_bf frame_local : 1; |
1880 | /* True means that the binding now loaded was found. | |
7555c33f | 1881 | Presumably equivalent to (defcell!=valcell). */ |
96c06863 | 1882 | bool_bf found : 1; |
ce5b453a SM |
1883 | /* If non-NULL, a forwarding to the C var where it should also be set. */ |
1884 | union Lisp_Fwd *fwd; /* Should never be (Buffer|Kboard)_Objfwd. */ | |
1885 | /* The buffer or frame for which the loaded binding was found. */ | |
1886 | Lisp_Object where; | |
1887 | /* A cons cell that holds the default value. It has the form | |
1888 | (SYMBOL . DEFAULT-VALUE). */ | |
1889 | Lisp_Object defcell; | |
1890 | /* The cons cell from `where's parameter alist. | |
1891 | It always has the form (SYMBOL . VALUE) | |
1892 | Note that if `forward' is non-nil, VALUE may be out of date. | |
1893 | Also if the currently loaded binding is the default binding, then | |
1894 | this is `eq'ual to defcell. */ | |
1895 | Lisp_Object valcell; | |
7d65f1c2 KH |
1896 | }; |
1897 | ||
f334de0e | 1898 | /* Like Lisp_Objfwd except that value lives in a slot in the |
32462604 KH |
1899 | current kboard. */ |
1900 | struct Lisp_Kboard_Objfwd | |
f334de0e | 1901 | { |
ce5b453a | 1902 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Kboard_Obj */ |
f334de0e KH |
1903 | int offset; |
1904 | }; | |
1905 | ||
ce5b453a SM |
1906 | union Lisp_Fwd |
1907 | { | |
d55c12ed AS |
1908 | struct Lisp_Intfwd u_intfwd; |
1909 | struct Lisp_Boolfwd u_boolfwd; | |
1910 | struct Lisp_Objfwd u_objfwd; | |
1911 | struct Lisp_Buffer_Objfwd u_buffer_objfwd; | |
1912 | struct Lisp_Kboard_Objfwd u_kboard_objfwd; | |
84d1833e | 1913 | }; |
84575e67 | 1914 | |
00382e8b | 1915 | INLINE enum Lisp_Fwd_Type |
84575e67 PE |
1916 | XFWDTYPE (union Lisp_Fwd *a) |
1917 | { | |
1918 | return a->u_intfwd.type; | |
1919 | } | |
1920 | ||
00382e8b | 1921 | INLINE struct Lisp_Buffer_Objfwd * |
84575e67 PE |
1922 | XBUFFER_OBJFWD (union Lisp_Fwd *a) |
1923 | { | |
1924 | eassert (BUFFER_OBJFWDP (a)); | |
1925 | return &a->u_buffer_objfwd; | |
1926 | } | |
7c06ac2b | 1927 | \f |
ed446f1e | 1928 | #define XFLOAT_DATA(f) (scm_to_double (f)) |
3cfe6dfd | 1929 | |
4d7e6e51 PE |
1930 | /* Most hosts nowadays use IEEE floating point, so they use IEC 60559 |
1931 | representations, have infinities and NaNs, and do not trap on | |
1932 | exceptions. Define IEEE_FLOATING_POINT if this host is one of the | |
1933 | typical ones. The C11 macro __STDC_IEC_559__ is close to what is | |
1934 | wanted here, but is not quite right because Emacs does not require | |
1935 | all the features of C11 Annex F (and does not require C11 at all, | |
1936 | for that matter). */ | |
84575e67 PE |
1937 | enum |
1938 | { | |
1939 | IEEE_FLOATING_POINT | |
1940 | = (FLT_RADIX == 2 && FLT_MANT_DIG == 24 | |
1941 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) | |
1942 | }; | |
4d7e6e51 | 1943 | |
3cfe6dfd | 1944 | /* A character, declared with the following typedef, is a member |
99a3d506 | 1945 | of some character set associated with the current buffer. */ |
b2ba7b00 RS |
1946 | #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */ |
1947 | #define _UCHAR_T | |
3cfe6dfd | 1948 | typedef unsigned char UCHAR; |
b2ba7b00 | 1949 | #endif |
3cfe6dfd JB |
1950 | |
1951 | /* Meanings of slots in a Lisp_Compiled: */ | |
1952 | ||
03a660a6 PE |
1953 | enum Lisp_Compiled |
1954 | { | |
1955 | COMPILED_ARGLIST = 0, | |
1956 | COMPILED_BYTECODE = 1, | |
1957 | COMPILED_CONSTANTS = 2, | |
1958 | COMPILED_STACK_DEPTH = 3, | |
1959 | COMPILED_DOC_STRING = 4, | |
1960 | COMPILED_INTERACTIVE = 5 | |
1961 | }; | |
88dbfee5 | 1962 | |
d03f79ef JB |
1963 | /* Flag bits in a character. These also get used in termhooks.h. |
1964 | Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE | |
7c06ac2b RS |
1965 | (MUlti-Lingual Emacs) might need 22 bits for the character value |
1966 | itself, so we probably shouldn't use any bits lower than 0x0400000. */ | |
03a660a6 PE |
1967 | enum char_bits |
1968 | { | |
1969 | CHAR_ALT = 0x0400000, | |
1970 | CHAR_SUPER = 0x0800000, | |
1971 | CHAR_HYPER = 0x1000000, | |
1972 | CHAR_SHIFT = 0x2000000, | |
1973 | CHAR_CTL = 0x4000000, | |
1974 | CHAR_META = 0x8000000, | |
1975 | ||
1976 | CHAR_MODIFIER_MASK = | |
88fb40b4 | 1977 | CHAR_ALT | CHAR_SUPER | CHAR_HYPER | CHAR_SHIFT | CHAR_CTL | CHAR_META, |
03a660a6 PE |
1978 | |
1979 | /* Actually, the current Emacs uses 22 bits for the character value | |
1980 | itself. */ | |
1981 | CHARACTERBITS = 22 | |
1982 | }; | |
3cfe6dfd | 1983 | \f |
e7032e7c | 1984 | /* Data type checking. */ |
3cfe6dfd | 1985 | |
84575e67 | 1986 | LISP_MACRO_DEFUN (NILP, bool, (Lisp_Object x), (x)) |
3cfe6dfd | 1987 | |
00382e8b | 1988 | INLINE bool |
84575e67 PE |
1989 | NUMBERP (Lisp_Object x) |
1990 | { | |
1991 | return INTEGERP (x) || FLOATP (x); | |
1992 | } | |
00382e8b | 1993 | INLINE bool |
84575e67 PE |
1994 | NATNUMP (Lisp_Object x) |
1995 | { | |
1996 | return INTEGERP (x) && 0 <= XINT (x); | |
1997 | } | |
1998 | ||
00382e8b | 1999 | INLINE bool |
84575e67 PE |
2000 | RANGED_INTEGERP (intmax_t lo, Lisp_Object x, intmax_t hi) |
2001 | { | |
2002 | return INTEGERP (x) && lo <= XINT (x) && XINT (x) <= hi; | |
2003 | } | |
4746118a | 2004 | |
ca9ce8f2 | 2005 | #define TYPE_RANGED_INTEGERP(type, x) \ |
84575e67 PE |
2006 | (INTEGERP (x) \ |
2007 | && (TYPE_SIGNED (type) ? TYPE_MINIMUM (type) <= XINT (x) : 0 <= XINT (x)) \ | |
2008 | && XINT (x) <= TYPE_MAXIMUM (type)) | |
2009 | ||
2010 | LISP_MACRO_DEFUN (CONSP, bool, (Lisp_Object x), (x)) | |
2011 | LISP_MACRO_DEFUN (FLOATP, bool, (Lisp_Object x), (x)) | |
2012 | LISP_MACRO_DEFUN (MISCP, bool, (Lisp_Object x), (x)) | |
2013 | LISP_MACRO_DEFUN (SYMBOLP, bool, (Lisp_Object x), (x)) | |
2014 | LISP_MACRO_DEFUN (INTEGERP, bool, (Lisp_Object x), (x)) | |
2015 | LISP_MACRO_DEFUN (VECTORLIKEP, bool, (Lisp_Object x), (x)) | |
2016 | LISP_MACRO_DEFUN (MARKERP, bool, (Lisp_Object x), (x)) | |
2017 | ||
00382e8b | 2018 | INLINE bool |
84575e67 PE |
2019 | STRINGP (Lisp_Object x) |
2020 | { | |
49609976 | 2021 | return SMOB_TYPEP (x, lisp_string_tag); |
84575e67 | 2022 | } |
00382e8b | 2023 | INLINE bool |
84575e67 PE |
2024 | VECTORP (Lisp_Object x) |
2025 | { | |
2026 | return VECTORLIKEP (x) && ! (ASIZE (x) & PSEUDOVECTOR_FLAG); | |
2027 | } | |
00382e8b | 2028 | INLINE bool |
84575e67 PE |
2029 | OVERLAYP (Lisp_Object x) |
2030 | { | |
2031 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Overlay; | |
2032 | } | |
00382e8b | 2033 | INLINE bool |
84575e67 PE |
2034 | SAVE_VALUEP (Lisp_Object x) |
2035 | { | |
2036 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Save_Value; | |
2037 | } | |
2038 | ||
00382e8b | 2039 | INLINE bool |
84575e67 PE |
2040 | AUTOLOADP (Lisp_Object x) |
2041 | { | |
2042 | return CONSP (x) && EQ (Qautoload, XCAR (x)); | |
2043 | } | |
7b1123d8 | 2044 | |
00382e8b | 2045 | INLINE bool |
84575e67 | 2046 | BUFFER_OBJFWDP (union Lisp_Fwd *a) |
7b1123d8 | 2047 | { |
84575e67 | 2048 | return XFWDTYPE (a) == Lisp_Fwd_Buffer_Obj; |
7b1123d8 | 2049 | } |
edfa9106 | 2050 | |
00382e8b | 2051 | INLINE bool |
84575e67 | 2052 | PSEUDOVECTOR_TYPEP (struct vectorlike_header *a, int code) |
717b8bcd | 2053 | { |
84575e67 PE |
2054 | return ((a->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) |
2055 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))); | |
717b8bcd SM |
2056 | } |
2057 | ||
84575e67 | 2058 | /* True if A is a pseudovector whose code is CODE. */ |
00382e8b | 2059 | INLINE bool |
84575e67 | 2060 | PSEUDOVECTORP (Lisp_Object a, int code) |
717b8bcd | 2061 | { |
84575e67 | 2062 | if (! VECTORLIKEP (a)) |
96c06863 | 2063 | return false; |
84575e67 PE |
2064 | else |
2065 | { | |
2066 | /* Converting to struct vectorlike_header * avoids aliasing issues. */ | |
49609976 | 2067 | struct vectorlike_header *h = SMOB_PTR (a); |
84575e67 PE |
2068 | return PSEUDOVECTOR_TYPEP (h, code); |
2069 | } | |
717b8bcd SM |
2070 | } |
2071 | ||
84575e67 PE |
2072 | /* Test for specific pseudovector types. */ |
2073 | ||
00382e8b | 2074 | INLINE bool |
84575e67 | 2075 | WINDOW_CONFIGURATIONP (Lisp_Object a) |
717b8bcd | 2076 | { |
84575e67 | 2077 | return PSEUDOVECTORP (a, PVEC_WINDOW_CONFIGURATION); |
717b8bcd | 2078 | } |
84575e67 | 2079 | |
00382e8b | 2080 | INLINE bool |
84575e67 | 2081 | PROCESSP (Lisp_Object a) |
717b8bcd | 2082 | { |
84575e67 | 2083 | return PSEUDOVECTORP (a, PVEC_PROCESS); |
717b8bcd SM |
2084 | } |
2085 | ||
00382e8b | 2086 | INLINE bool |
84575e67 | 2087 | WINDOWP (Lisp_Object a) |
717b8bcd | 2088 | { |
84575e67 | 2089 | return PSEUDOVECTORP (a, PVEC_WINDOW); |
717b8bcd | 2090 | } |
84575e67 | 2091 | |
00382e8b | 2092 | INLINE bool |
84575e67 | 2093 | TERMINALP (Lisp_Object a) |
717b8bcd | 2094 | { |
84575e67 | 2095 | return PSEUDOVECTORP (a, PVEC_TERMINAL); |
717b8bcd SM |
2096 | } |
2097 | ||
00382e8b | 2098 | INLINE bool |
84575e67 PE |
2099 | COMPILEDP (Lisp_Object a) |
2100 | { | |
2101 | return PSEUDOVECTORP (a, PVEC_COMPILED); | |
2102 | } | |
32e5c58c | 2103 | |
00382e8b | 2104 | INLINE bool |
84575e67 PE |
2105 | BUFFERP (Lisp_Object a) |
2106 | { | |
2107 | return PSEUDOVECTORP (a, PVEC_BUFFER); | |
2108 | } | |
7c06ac2b | 2109 | |
00382e8b | 2110 | INLINE bool |
84575e67 PE |
2111 | CHAR_TABLE_P (Lisp_Object a) |
2112 | { | |
2113 | return PSEUDOVECTORP (a, PVEC_CHAR_TABLE); | |
2114 | } | |
ee28be33 | 2115 | |
00382e8b | 2116 | INLINE bool |
84575e67 PE |
2117 | SUB_CHAR_TABLE_P (Lisp_Object a) |
2118 | { | |
2119 | return PSEUDOVECTORP (a, PVEC_SUB_CHAR_TABLE); | |
2120 | } | |
eab3844f | 2121 | |
00382e8b | 2122 | INLINE bool |
84575e67 PE |
2123 | BOOL_VECTOR_P (Lisp_Object a) |
2124 | { | |
2125 | return PSEUDOVECTORP (a, PVEC_BOOL_VECTOR); | |
2126 | } | |
7c06ac2b | 2127 | |
00382e8b | 2128 | INLINE bool |
84575e67 PE |
2129 | FRAMEP (Lisp_Object a) |
2130 | { | |
2131 | return PSEUDOVECTORP (a, PVEC_FRAME); | |
2132 | } | |
ea724a01 | 2133 | |
6b61353c | 2134 | /* Test for image (image . spec) */ |
00382e8b | 2135 | INLINE bool |
84575e67 PE |
2136 | IMAGEP (Lisp_Object x) |
2137 | { | |
2138 | return CONSP (x) && EQ (XCAR (x), Qimage); | |
2139 | } | |
6b61353c | 2140 | |
c8a39089 | 2141 | /* Array types. */ |
00382e8b | 2142 | INLINE bool |
84575e67 PE |
2143 | ARRAYP (Lisp_Object x) |
2144 | { | |
2145 | return VECTORP (x) || STRINGP (x) || CHAR_TABLE_P (x) || BOOL_VECTOR_P (x); | |
2146 | } | |
7c06ac2b | 2147 | \f |
00382e8b | 2148 | INLINE void |
84575e67 PE |
2149 | CHECK_LIST (Lisp_Object x) |
2150 | { | |
2151 | CHECK_TYPE (CONSP (x) || NILP (x), Qlistp, x); | |
2152 | } | |
3cfe6dfd | 2153 | |
84575e67 PE |
2154 | LISP_MACRO_DEFUN_VOID (CHECK_LIST_CONS, (Lisp_Object x, Lisp_Object y), (x, y)) |
2155 | LISP_MACRO_DEFUN_VOID (CHECK_SYMBOL, (Lisp_Object x), (x)) | |
2156 | LISP_MACRO_DEFUN_VOID (CHECK_NUMBER, (Lisp_Object x), (x)) | |
3cfe6dfd | 2157 | |
00382e8b | 2158 | INLINE void |
84575e67 PE |
2159 | CHECK_STRING (Lisp_Object x) |
2160 | { | |
2161 | CHECK_TYPE (STRINGP (x), Qstringp, x); | |
2162 | } | |
00382e8b | 2163 | INLINE void |
84575e67 PE |
2164 | CHECK_STRING_CAR (Lisp_Object x) |
2165 | { | |
2166 | CHECK_TYPE (STRINGP (XCAR (x)), Qstringp, XCAR (x)); | |
2167 | } | |
00382e8b | 2168 | INLINE void |
84575e67 PE |
2169 | CHECK_CONS (Lisp_Object x) |
2170 | { | |
2171 | CHECK_TYPE (CONSP (x), Qconsp, x); | |
2172 | } | |
00382e8b | 2173 | INLINE void |
84575e67 PE |
2174 | CHECK_VECTOR (Lisp_Object x) |
2175 | { | |
2176 | CHECK_TYPE (VECTORP (x), Qvectorp, x); | |
2177 | } | |
00382e8b | 2178 | INLINE void |
3e0b94e7 DC |
2179 | CHECK_BOOL_VECTOR (Lisp_Object x) |
2180 | { | |
2181 | CHECK_TYPE (BOOL_VECTOR_P (x), Qbool_vector_p, x); | |
2182 | } | |
2183 | INLINE void | |
84575e67 PE |
2184 | CHECK_VECTOR_OR_STRING (Lisp_Object x) |
2185 | { | |
2186 | CHECK_TYPE (VECTORP (x) || STRINGP (x), Qarrayp, x); | |
2187 | } | |
00382e8b | 2188 | INLINE void |
40f5d4b7 | 2189 | CHECK_ARRAY (Lisp_Object x, Lisp_Object predicate) |
84575e67 | 2190 | { |
40f5d4b7 | 2191 | CHECK_TYPE (ARRAYP (x), predicate, x); |
84575e67 | 2192 | } |
00382e8b | 2193 | INLINE void |
84575e67 PE |
2194 | CHECK_BUFFER (Lisp_Object x) |
2195 | { | |
2196 | CHECK_TYPE (BUFFERP (x), Qbufferp, x); | |
2197 | } | |
00382e8b | 2198 | INLINE void |
84575e67 PE |
2199 | CHECK_WINDOW (Lisp_Object x) |
2200 | { | |
2201 | CHECK_TYPE (WINDOWP (x), Qwindowp, x); | |
2202 | } | |
bf6b4923 | 2203 | #ifdef subprocesses |
00382e8b | 2204 | INLINE void |
84575e67 PE |
2205 | CHECK_PROCESS (Lisp_Object x) |
2206 | { | |
2207 | CHECK_TYPE (PROCESSP (x), Qprocessp, x); | |
2208 | } | |
bf6b4923 | 2209 | #endif |
00382e8b | 2210 | INLINE void |
84575e67 PE |
2211 | CHECK_NATNUM (Lisp_Object x) |
2212 | { | |
2213 | CHECK_TYPE (NATNUMP (x), Qwholenump, x); | |
2214 | } | |
3cfe6dfd | 2215 | |
af5a5a98 | 2216 | #define CHECK_RANGED_INTEGER(x, lo, hi) \ |
d311d28c PE |
2217 | do { \ |
2218 | CHECK_NUMBER (x); \ | |
2219 | if (! ((lo) <= XINT (x) && XINT (x) <= (hi))) \ | |
2220 | args_out_of_range_3 \ | |
2221 | (x, \ | |
2222 | make_number ((lo) < 0 && (lo) < MOST_NEGATIVE_FIXNUM \ | |
2223 | ? MOST_NEGATIVE_FIXNUM \ | |
2224 | : (lo)), \ | |
2225 | make_number (min (hi, MOST_POSITIVE_FIXNUM))); \ | |
96c06863 | 2226 | } while (false) |
d311d28c PE |
2227 | #define CHECK_TYPE_RANGED_INTEGER(type, x) \ |
2228 | do { \ | |
2229 | if (TYPE_SIGNED (type)) \ | |
af5a5a98 | 2230 | CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \ |
d311d28c | 2231 | else \ |
af5a5a98 | 2232 | CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \ |
96c06863 | 2233 | } while (false) |
d311d28c | 2234 | |
96c06863 PE |
2235 | #define CHECK_NUMBER_COERCE_MARKER(x) \ |
2236 | do { \ | |
2237 | if (MARKERP ((x))) \ | |
2238 | XSETFASTINT (x, marker_position (x)); \ | |
2239 | else \ | |
2240 | CHECK_TYPE (INTEGERP (x), Qinteger_or_marker_p, x); \ | |
2241 | } while (false) | |
3cfe6dfd | 2242 | |
00382e8b | 2243 | INLINE double |
84575e67 PE |
2244 | XFLOATINT (Lisp_Object n) |
2245 | { | |
2246 | return extract_float (n); | |
2247 | } | |
3cfe6dfd | 2248 | |
00382e8b | 2249 | INLINE void |
84575e67 PE |
2250 | CHECK_NUMBER_OR_FLOAT (Lisp_Object x) |
2251 | { | |
2252 | CHECK_TYPE (FLOATP (x) || INTEGERP (x), Qnumberp, x); | |
2253 | } | |
3cfe6dfd | 2254 | |
96c06863 PE |
2255 | #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x) \ |
2256 | do { \ | |
2257 | if (MARKERP (x)) \ | |
2258 | XSETFASTINT (x, marker_position (x)); \ | |
2259 | else \ | |
2260 | CHECK_TYPE (INTEGERP (x) || FLOATP (x), Qnumber_or_marker_p, x); \ | |
2261 | } while (false) | |
3cfe6dfd | 2262 | |
f3fbd155 KR |
2263 | /* Since we can't assign directly to the CAR or CDR fields of a cons |
2264 | cell, use these when checking that those fields contain numbers. */ | |
00382e8b | 2265 | INLINE void |
84575e67 PE |
2266 | CHECK_NUMBER_CAR (Lisp_Object x) |
2267 | { | |
2268 | Lisp_Object tmp = XCAR (x); | |
2269 | CHECK_NUMBER (tmp); | |
2270 | XSETCAR (x, tmp); | |
2271 | } | |
8f924df7 | 2272 | |
00382e8b | 2273 | INLINE void |
84575e67 PE |
2274 | CHECK_NUMBER_CDR (Lisp_Object x) |
2275 | { | |
2276 | Lisp_Object tmp = XCDR (x); | |
2277 | CHECK_NUMBER (tmp); | |
2278 | XSETCDR (x, tmp); | |
2279 | } | |
3cfe6dfd JB |
2280 | \f |
2281 | /* Define a built-in function for calling from Lisp. | |
2282 | `lname' should be the name to give the function in Lisp, | |
2283 | as a null-terminated C string. | |
2284 | `fnname' should be the name of the function in C. | |
2285 | By convention, it starts with F. | |
2286 | `sname' should be the name for the C constant structure | |
2287 | that records information on this function for internal use. | |
2288 | By convention, it should be the same as `fnname' but with S instead of F. | |
2289 | It's too bad that C macros can't compute this from `fnname'. | |
2290 | `minargs' should be a number, the minimum number of arguments allowed. | |
2291 | `maxargs' should be a number, the maximum number of arguments allowed, | |
2292 | or else MANY or UNEVALLED. | |
2293 | MANY means pass a vector of evaluated arguments, | |
2294 | in the form of an integer number-of-arguments | |
2295 | followed by the address of a vector of Lisp_Objects | |
2296 | which contains the argument values. | |
2297 | UNEVALLED means pass the list of unevaluated arguments | |
4bca9161 MC |
2298 | `intspec' says how interactive arguments are to be fetched. |
2299 | If the string starts with a `(', `intspec' is evaluated and the resulting | |
2300 | list is the list of arguments. | |
2301 | If it's a string that doesn't start with `(', the value should follow | |
2302 | the one of the doc string for `interactive'. | |
3cfe6dfd | 2303 | A null string means call interactively with no arguments. |
eab9d423 | 2304 | `doc' is documentation for the user. */ |
3cfe6dfd | 2305 | |
c451d7b1 | 2306 | /* This version of DEFUN declares a function prototype with the right |
99a3d506 | 2307 | arguments, so we can catch errors with maxargs at compile-time. */ |
a6fc3b5c | 2308 | #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \ |
62947569 | 2309 | SCM_SNARF_INIT (defsubr (lname, gsubr_ ## fnname, minargs, maxargs, intspec)) \ |
72aa8b2e | 2310 | Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \ |
62947569 | 2311 | DEFUN_GSUBR_ ## maxargs (lname, fnname, minargs, maxargs) \ |
a6fc3b5c | 2312 | Lisp_Object fnname |
62947569 BT |
2313 | |
2314 | #define GSUBR_ARGS_1(f) f (arg1) | |
2315 | #define GSUBR_ARGS_2(f) GSUBR_ARGS_1 (f), f (arg2) | |
2316 | #define GSUBR_ARGS_3(f) GSUBR_ARGS_2 (f), f (arg3) | |
2317 | #define GSUBR_ARGS_4(f) GSUBR_ARGS_3 (f), f (arg4) | |
2318 | #define GSUBR_ARGS_5(f) GSUBR_ARGS_4 (f), f (arg5) | |
2319 | #define GSUBR_ARGS_6(f) GSUBR_ARGS_5 (f), f (arg6) | |
2320 | #define GSUBR_ARGS_7(f) GSUBR_ARGS_6 (f), f (arg7) | |
2321 | #define GSUBR_ARGS_8(f) GSUBR_ARGS_7 (f), f (arg8) | |
2322 | ||
2323 | #define GSUBR_ARGS(n) GSUBR_ARGS_PASTE (GSUBR_ARGS_, n) | |
2324 | #define GSUBR_ARGS_PASTE(a, b) a ## b | |
2325 | ||
2326 | #define DEFUN_GSUBR_N(fn, maxargs) \ | |
2327 | Lisp_Object \ | |
2328 | gsubr_ ## fn \ | |
2329 | (GSUBR_ARGS (maxargs) (Lisp_Object)) \ | |
2330 | { \ | |
2331 | return fn (GSUBR_ARGS (maxargs) (GSUBR_ARG)); \ | |
2332 | } | |
2333 | #define GSUBR_ARG(x) (SCM_UNBNDP (x) ? Qnil : x) | |
2334 | ||
2335 | #define DEFUN_GSUBR_0(lname, fn, minargs, maxargs) \ | |
2336 | Lisp_Object gsubr_ ## fn (void) { return fn (); } | |
2337 | #define DEFUN_GSUBR_1(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2338 | #define DEFUN_GSUBR_2(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2339 | #define DEFUN_GSUBR_3(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2340 | #define DEFUN_GSUBR_4(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2341 | #define DEFUN_GSUBR_5(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2342 | #define DEFUN_GSUBR_6(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2343 | #define DEFUN_GSUBR_7(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2344 | #define DEFUN_GSUBR_8(lname, fn, min, max) DEFUN_GSUBR_N(fn, max) | |
2345 | ||
2346 | #define DEFUN_GSUBR_UNEVALLED(lname, fn, minargs, maxargs) \ | |
2347 | Lisp_Object \ | |
2348 | gsubr_ ## fn (Lisp_Object rest) \ | |
2349 | { \ | |
2350 | Lisp_Object len = Flength (rest); \ | |
2351 | if (XINT (len) < minargs) \ | |
2352 | xsignal2 (Qwrong_number_of_arguments, \ | |
2353 | intern (lname), len); \ | |
2354 | return fn (rest); \ | |
2355 | } | |
2356 | #define DEFUN_GSUBR_MANY(lname, fn, minargs, maxargs) \ | |
2357 | Lisp_Object \ | |
2358 | gsubr_ ## fn (Lisp_Object rest) \ | |
2359 | { \ | |
2360 | int len = scm_to_int (scm_length (rest)); \ | |
2361 | Lisp_Object *args; \ | |
2362 | SAFE_ALLOCA_LISP (args, len); \ | |
2363 | int i; \ | |
2364 | for (i = 0; \ | |
2365 | i < len && scm_is_pair (rest); \ | |
2366 | i++, rest = SCM_CDR (rest)) \ | |
2367 | args[i] = SCM_CAR (rest); \ | |
2368 | if (i < minargs) \ | |
2369 | xsignal2 (Qwrong_number_of_arguments, \ | |
2370 | intern (lname), make_number (i)); \ | |
2371 | return fn (i, args); \ | |
2372 | } | |
c451d7b1 RS |
2373 | |
2374 | /* Note that the weird token-substitution semantics of ANSI C makes | |
99a3d506 | 2375 | this work for MANY and UNEVALLED. */ |
f66c7cf8 | 2376 | #define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *) |
c451d7b1 RS |
2377 | #define DEFUN_ARGS_UNEVALLED (Lisp_Object) |
2378 | #define DEFUN_ARGS_0 (void) | |
2379 | #define DEFUN_ARGS_1 (Lisp_Object) | |
2380 | #define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object) | |
2381 | #define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object) | |
2382 | #define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object) | |
2383 | #define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2384 | Lisp_Object) | |
2385 | #define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2386 | Lisp_Object, Lisp_Object) | |
2387 | #define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ | |
2388 | Lisp_Object, Lisp_Object, Lisp_Object) | |
5593f7e3 KH |
2389 | #define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ |
2390 | Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object) | |
276680c4 | 2391 | |
d1c3da7b BT |
2392 | #define WRAP1(cfn, lfn) Lisp_Object cfn (Lisp_Object a) { return call1 (intern (lfn), a); } |
2393 | #define WRAP2(cfn, lfn) Lisp_Object cfn (Lisp_Object a, Lisp_Object b) { return call2 (intern (lfn), a, b); } | |
2394 | ||
84575e67 | 2395 | /* True if OBJ is a Lisp function. */ |
00382e8b | 2396 | INLINE bool |
84575e67 PE |
2397 | FUNCTIONP (Lisp_Object obj) |
2398 | { | |
2399 | return functionp (obj); | |
2400 | } | |
e2c0561e | 2401 | |
3cfe6dfd | 2402 | /* defsubr (Sname); |
d19b9aa8 | 2403 | is how we define the symbol for function `name' at start-up time. */ |
62947569 | 2404 | extern void defsubr (const char *, scm_t_subr, short, short, const char *); |
3cfe6dfd | 2405 | |
03a660a6 PE |
2406 | enum maxargs |
2407 | { | |
2408 | MANY = -2, | |
2409 | UNEVALLED = -1 | |
2410 | }; | |
3cfe6dfd | 2411 | |
ce5b453a SM |
2412 | extern void defvar_lisp (struct Lisp_Objfwd *, const char *, Lisp_Object *); |
2413 | extern void defvar_lisp_nopro (struct Lisp_Objfwd *, const char *, Lisp_Object *); | |
f5d9e83a | 2414 | extern void defvar_bool (struct Lisp_Boolfwd *, const char *, bool *); |
ce5b453a SM |
2415 | extern void defvar_int (struct Lisp_Intfwd *, const char *, EMACS_INT *); |
2416 | extern void defvar_kboard (struct Lisp_Kboard_Objfwd *, const char *, int); | |
3cfe6dfd JB |
2417 | |
2418 | /* Macros we use to define forwarded Lisp variables. | |
29208e82 | 2419 | These are used in the syms_of_FILENAME functions. |
51b59d79 | 2420 | |
29208e82 TT |
2421 | An ordinary (not in buffer_defaults, per-buffer, or per-keyboard) |
2422 | lisp variable is actually a field in `struct emacs_globals'. The | |
2423 | field's name begins with "f_", which is a convention enforced by | |
2424 | these macros. Each such global has a corresponding #define in | |
2425 | globals.h; the plain name should be used in the code. | |
2426 | ||
2427 | E.g., the global "cons_cells_consed" is declared as "int | |
2428 | f_cons_cells_consed" in globals.h, but there is a define: | |
2429 | ||
2430 | #define cons_cells_consed globals.f_cons_cells_consed | |
2431 | ||
2432 | All C code uses the `cons_cells_consed' name. This is all done | |
2433 | this way to support indirection for multi-threaded Emacs. */ | |
3cfe6dfd | 2434 | |
ce5b453a SM |
2435 | #define DEFVAR_LISP(lname, vname, doc) \ |
2436 | do { \ | |
2437 | static struct Lisp_Objfwd o_fwd; \ | |
29208e82 | 2438 | defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \ |
96c06863 | 2439 | } while (false) |
ce5b453a SM |
2440 | #define DEFVAR_LISP_NOPRO(lname, vname, doc) \ |
2441 | do { \ | |
2442 | static struct Lisp_Objfwd o_fwd; \ | |
29208e82 | 2443 | defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \ |
96c06863 | 2444 | } while (false) |
ce5b453a SM |
2445 | #define DEFVAR_BOOL(lname, vname, doc) \ |
2446 | do { \ | |
2447 | static struct Lisp_Boolfwd b_fwd; \ | |
29208e82 | 2448 | defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \ |
96c06863 | 2449 | } while (false) |
ce5b453a SM |
2450 | #define DEFVAR_INT(lname, vname, doc) \ |
2451 | do { \ | |
2452 | static struct Lisp_Intfwd i_fwd; \ | |
29208e82 | 2453 | defvar_int (&i_fwd, lname, &globals.f_ ## vname); \ |
96c06863 | 2454 | } while (false) |
92d2947b | 2455 | |
422745d0 TT |
2456 | #define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \ |
2457 | do { \ | |
2458 | static struct Lisp_Objfwd o_fwd; \ | |
eb4916d7 | 2459 | defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \ |
96c06863 | 2460 | } while (false) |
422745d0 | 2461 | |
ce5b453a SM |
2462 | #define DEFVAR_KBOARD(lname, vname, doc) \ |
2463 | do { \ | |
2464 | static struct Lisp_Kboard_Objfwd ko_fwd; \ | |
437b2cb4 | 2465 | defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \ |
96c06863 | 2466 | } while (false) |
0328b6de PE |
2467 | \f |
2468 | /* Save and restore the instruction and environment pointers, | |
2469 | without affecting the signal mask. */ | |
2470 | ||
2471 | #ifdef HAVE__SETJMP | |
2472 | typedef jmp_buf sys_jmp_buf; | |
2473 | # define sys_setjmp(j) _setjmp (j) | |
2474 | # define sys_longjmp(j, v) _longjmp (j, v) | |
2475 | #elif defined HAVE_SIGSETJMP | |
2476 | typedef sigjmp_buf sys_jmp_buf; | |
2477 | # define sys_setjmp(j) sigsetjmp (j, 0) | |
2478 | # define sys_longjmp(j, v) siglongjmp (j, v) | |
2479 | #else | |
7105c8cb EZ |
2480 | /* A platform that uses neither _longjmp nor siglongjmp; assume |
2481 | longjmp does not affect the sigmask. */ | |
0328b6de PE |
2482 | typedef jmp_buf sys_jmp_buf; |
2483 | # define sys_setjmp(j) setjmp (j) | |
2484 | # define sys_longjmp(j, v) longjmp (j, v) | |
2485 | #endif | |
df7cd53b | 2486 | |
3cfe6dfd | 2487 | \f |
2f592f95 SM |
2488 | /* Elisp uses several stacks: |
2489 | - the C stack. | |
2490 | - the bytecode stack: used internally by the bytecode interpreter. | |
2491 | Allocated from the C stack. | |
2492 | - The specpdl stack: keeps track of active unwind-protect and | |
2493 | dynamic-let-bindings. Allocated from the `specpdl' array, a manually | |
2494 | managed stack. | |
adf2aa61 SM |
2495 | - The handler stack: keeps track of active catch tags and condition-case |
2496 | handlers. Allocated in a manually managed stack implemented by a | |
2497 | doubly-linked list allocated via xmalloc and never freed. */ | |
2f592f95 | 2498 | |
78ca380c JB |
2499 | /* Structure for recording Lisp call stack for backtrace purposes. */ |
2500 | ||
2501 | /* The special binding stack holds the outer values of variables while | |
2502 | they are bound by a function application or a let form, stores the | |
2f592f95 | 2503 | code to be executed for unwind-protect forms. |
78ca380c | 2504 | |
9349e5f7 | 2505 | NOTE: The specbinding union is defined here, because SPECPDL_INDEX is |
2f592f95 | 2506 | used all over the place, needs to be fast, and needs to know the size of |
9349e5f7 | 2507 | union specbinding. But only eval.c should access it. */ |
5fd6e274 | 2508 | |
2f592f95 | 2509 | enum specbind_tag { |
2f592f95 SM |
2510 | SPECPDL_BACKTRACE, /* An element of the backtrace. */ |
2511 | SPECPDL_LET, /* A plain and simple dynamic let-binding. */ | |
2512 | /* Tags greater than SPECPDL_LET must be "subkinds" of LET. */ | |
2513 | SPECPDL_LET_LOCAL, /* A buffer-local let-binding. */ | |
2514 | SPECPDL_LET_DEFAULT /* A global binding for a localized var. */ | |
2515 | }; | |
2516 | ||
9349e5f7 | 2517 | union specbinding |
3cfe6dfd | 2518 | { |
9349e5f7 | 2519 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
a26b12fa BT |
2520 | struct { |
2521 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2522 | } frame; | |
9349e5f7 PE |
2523 | struct { |
2524 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
5d1922cd | 2525 | bool wind_explicitly; |
27e498e6 | 2526 | void (*func) (Lisp_Object); |
9349e5f7 | 2527 | Lisp_Object arg; |
9349e5f7 | 2528 | } unwind; |
27e498e6 PE |
2529 | struct { |
2530 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
5d1922cd | 2531 | bool wind_explicitly; |
27e498e6 PE |
2532 | void (*func) (void *); |
2533 | void *arg; | |
2534 | } unwind_ptr; | |
2535 | struct { | |
2536 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
5d1922cd | 2537 | bool wind_explicitly; |
27e498e6 PE |
2538 | void (*func) (int); |
2539 | int arg; | |
2540 | } unwind_int; | |
2541 | struct { | |
2542 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
5d1922cd | 2543 | bool wind_explicitly; |
27e498e6 PE |
2544 | void (*func) (void); |
2545 | } unwind_void; | |
9349e5f7 PE |
2546 | struct { |
2547 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
2548 | /* `where' is not used in the case of SPECPDL_LET. */ | |
2549 | Lisp_Object symbol, old_value, where; | |
2550 | } let; | |
2551 | struct { | |
2552 | ENUM_BF (specbind_tag) kind : CHAR_BIT; | |
96c06863 | 2553 | bool_bf debug_on_exit : 1; |
9349e5f7 PE |
2554 | Lisp_Object function; |
2555 | Lisp_Object *args; | |
2556 | ptrdiff_t nargs; | |
2557 | } bt; | |
3cfe6dfd JB |
2558 | }; |
2559 | ||
9349e5f7 PE |
2560 | extern union specbinding *specpdl; |
2561 | extern union specbinding *specpdl_ptr; | |
d311d28c | 2562 | extern ptrdiff_t specpdl_size; |
3cfe6dfd | 2563 | |
00382e8b | 2564 | INLINE ptrdiff_t |
84575e67 PE |
2565 | SPECPDL_INDEX (void) |
2566 | { | |
2567 | return specpdl_ptr - specpdl; | |
2568 | } | |
acb8dc44 | 2569 | |
adf2aa61 SM |
2570 | /* This structure helps implement the `catch/throw' and `condition-case/signal' |
2571 | control structures. A struct handler contains all the information needed to | |
2572 | restore the state of the interpreter after a non-local jump. | |
50f2e553 | 2573 | |
adf2aa61 SM |
2574 | handler structures are chained together in a doubly linked list; the `next' |
2575 | member points to the next outer catchtag and the `nextfree' member points in | |
2576 | the other direction to the next inner element (which is typically the next | |
2577 | free element since we mostly use it on the deepest handler). | |
3cfe6dfd | 2578 | |
adf2aa61 | 2579 | A call like (throw TAG VAL) searches for a catchtag whose `tag_or_ch' |
d7306fe6 DN |
2580 | member is TAG, and then unbinds to it. The `val' member is used to |
2581 | hold VAL while the stack is unwound; `val' is returned as the value | |
2582 | of the catch form. | |
2583 | ||
2584 | All the other members are concerned with restoring the interpreter | |
50f2e553 | 2585 | state. |
d7306fe6 | 2586 | |
50f2e553 | 2587 | Members are volatile if their values need to survive _longjmp when |
adf2aa61 SM |
2588 | a 'struct handler' is a local variable. */ |
2589 | ||
2590 | enum handlertype { CATCHER, CONDITION_CASE }; | |
2591 | ||
2592 | struct handler | |
d7306fe6 | 2593 | { |
adf2aa61 | 2594 | enum handlertype type; |
6376ba30 | 2595 | Lisp_Object ptag; |
adf2aa61 SM |
2596 | Lisp_Object tag_or_ch; |
2597 | Lisp_Object val; | |
6376ba30 BT |
2598 | Lisp_Object var; |
2599 | Lisp_Object body; | |
adf2aa61 | 2600 | struct handler *next; |
d311d28c | 2601 | EMACS_INT lisp_eval_depth; |
d7306fe6 | 2602 | int interrupt_input_blocked; |
d7306fe6 DN |
2603 | }; |
2604 | ||
22bbbd42 RS |
2605 | extern Lisp_Object memory_signal_data; |
2606 | ||
4742f524 RS |
2607 | /* Check quit-flag and quit if it is non-nil. |
2608 | Typing C-g does not directly cause a quit; it only sets Vquit_flag. | |
2609 | So the program needs to do QUIT at times when it is safe to quit. | |
2610 | Every loop that might run for a long time or might not exit | |
2611 | ought to do QUIT at least once, at a safe place. | |
2612 | Unless that is impossible, of course. | |
2613 | But it is very desirable to avoid creating loops where QUIT is impossible. | |
2614 | ||
96c06863 | 2615 | Exception: if you set immediate_quit to true, |
4742f524 RS |
2616 | then the handler that responds to the C-g does the quit itself. |
2617 | This is a good thing to do around a loop that has no side effects | |
6c07aac2 AS |
2618 | and (in particular) cannot call arbitrary Lisp code. |
2619 | ||
2620 | If quit-flag is set to `kill-emacs' the SIGINT handler has received | |
2621 | a request to exit Emacs when it is safe to do. */ | |
3cfe6dfd | 2622 | |
383e0970 | 2623 | extern void process_pending_signals (void); |
88d69b7d | 2624 | extern bool volatile pending_signals; |
6b61353c | 2625 | |
7dbda6df | 2626 | extern void process_quit_flag (void); |
a69a6e61 GM |
2627 | #define QUIT \ |
2628 | do { \ | |
2629 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \ | |
6d5eb5b0 | 2630 | process_quit_flag (); \ |
0caaedb1 PE |
2631 | else if (pending_signals) \ |
2632 | process_pending_signals (); \ | |
96c06863 | 2633 | } while (false) |
3cfe6dfd | 2634 | |
6b61353c | 2635 | |
96c06863 | 2636 | /* True if ought to quit now. */ |
3cfe6dfd | 2637 | |
efb859b4 | 2638 | #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
3cfe6dfd | 2639 | \f |
31cd66f3 PE |
2640 | extern Lisp_Object Vascii_downcase_table; |
2641 | extern Lisp_Object Vascii_canon_table; | |
3cfe6dfd | 2642 | \f |
99a3d506 | 2643 | /* Structure for recording stack slots that need marking. */ |
3cfe6dfd | 2644 | |
78edd3b7 JB |
2645 | /* This is a chain of structures, each of which points at a Lisp_Object |
2646 | variable whose value should be marked in garbage collection. | |
2647 | Normally every link of the chain is an automatic variable of a function, | |
2648 | and its `val' points to some argument or local variable of the function. | |
2649 | On exit to the function, the chain is set back to the value it had on entry. | |
2650 | This way, no link remains in the chain when the stack frame containing the | |
2651 | link disappears. | |
3cfe6dfd | 2652 | |
78edd3b7 JB |
2653 | Every function that can call Feval must protect in this fashion all |
2654 | Lisp_Object variables whose contents will be used again. */ | |
3cfe6dfd JB |
2655 | |
2656 | extern struct gcpro *gcprolist; | |
2657 | ||
2658 | struct gcpro | |
834168ef GM |
2659 | { |
2660 | struct gcpro *next; | |
e2c0561e | 2661 | |
834168ef GM |
2662 | /* Address of first protected variable. */ |
2663 | volatile Lisp_Object *var; | |
e2c0561e | 2664 | |
834168ef | 2665 | /* Number of consecutive protected variables. */ |
f66c7cf8 | 2666 | ptrdiff_t nvars; |
e2c0561e | 2667 | |
4742f524 | 2668 | #ifdef DEBUG_GCPRO |
834168ef | 2669 | int level; |
4742f524 | 2670 | #endif |
834168ef | 2671 | }; |
3cfe6dfd | 2672 | |
9f0443f9 | 2673 | /* Do something silly with gcproN vars just so gcc shuts up. */ |
656c33dc | 2674 | /* You get warnings from MIPSPro... */ |
9f0443f9 | 2675 | |
dbf31225 PE |
2676 | #define GCPRO1(varname) ((void) gcpro1) |
2677 | #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1) | |
2678 | #define GCPRO3(varname1, varname2, varname3) \ | |
2679 | ((void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2680 | #define GCPRO4(varname1, varname2, varname3, varname4) \ | |
2681 | ((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2682 | #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \ | |
2683 | ((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) | |
2684 | #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \ | |
2685 | ((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \ | |
2686 | (void) gcpro1) | |
518c40a2 | 2687 | #define GCPRO7(a, b, c, d, e, f, g) (GCPRO6 (a, b, c, d, e, f), (void) gcpro7) |
dbf31225 | 2688 | #define UNGCPRO ((void) 0) |
1216f5e4 | 2689 | |
5db82c9d | 2690 | /* Evaluate expr, UNGCPRO, and then return the value of expr. */ |
c47b8d02 | 2691 | #define RETURN_UNGCPRO(expr) \ |
96c06863 | 2692 | do \ |
c47b8d02 RS |
2693 | { \ |
2694 | Lisp_Object ret_ungc_val; \ | |
2695 | ret_ungc_val = (expr); \ | |
2696 | UNGCPRO; \ | |
2697 | return ret_ungc_val; \ | |
2698 | } \ | |
96c06863 | 2699 | while (false) |
4742f524 RS |
2700 | |
2701 | /* Call staticpro (&var) to protect static variable `var'. */ | |
2702 | ||
383e0970 | 2703 | void staticpro (Lisp_Object *); |
3cfe6dfd | 2704 | \f |
2f69f2ec RS |
2705 | /* Declare a Lisp-callable function. The MAXARGS parameter has the same |
2706 | meaning as in the DEFUN macro, and is used to construct a prototype. */ | |
2f69f2ec RS |
2707 | /* We can use the same trick as in the DEFUN macro to generate the |
2708 | appropriate prototype. */ | |
2709 | #define EXFUN(fnname, maxargs) \ | |
2710 | extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs | |
2f69f2ec | 2711 | |
84575e67 PE |
2712 | #include "globals.h" |
2713 | ||
526a2be7 AS |
2714 | /* Forward declarations for prototypes. */ |
2715 | struct window; | |
2716 | struct frame; | |
2f69f2ec | 2717 | |
086ca913 DA |
2718 | /* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */ |
2719 | ||
00382e8b | 2720 | INLINE void |
086ca913 DA |
2721 | vcopy (Lisp_Object v, ptrdiff_t offset, Lisp_Object *args, ptrdiff_t count) |
2722 | { | |
7216e43b | 2723 | eassert (0 <= offset && 0 <= count && offset + count <= ASIZE (v)); |
91f2d272 | 2724 | memcpy (XVECTOR (v)->contents + offset, args, count * sizeof *args); |
086ca913 DA |
2725 | } |
2726 | ||
2727 | /* Functions to modify hash tables. */ | |
2728 | ||
00382e8b | 2729 | INLINE void |
e83064be | 2730 | set_hash_key_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) |
4939150c | 2731 | { |
8834c57a | 2732 | gc_aset (h->key_and_value, 2 * idx, val); |
4939150c PE |
2733 | } |
2734 | ||
00382e8b | 2735 | INLINE void |
e83064be | 2736 | set_hash_value_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) |
4939150c | 2737 | { |
8834c57a | 2738 | gc_aset (h->key_and_value, 2 * idx + 1, val); |
4939150c PE |
2739 | } |
2740 | ||
c644523b DA |
2741 | /* Use these functions to set Lisp_Object |
2742 | or pointer slots of struct Lisp_Symbol. */ | |
2743 | ||
00382e8b | 2744 | INLINE void |
c644523b DA |
2745 | set_symbol_function (Lisp_Object sym, Lisp_Object function) |
2746 | { | |
d1c3da7b BT |
2747 | scm_call_2 (scm_c_public_ref ("language elisp runtime", "set-symbol-function!"), |
2748 | sym, function); | |
c644523b DA |
2749 | } |
2750 | ||
061cde10 BT |
2751 | INLINE Lisp_Object |
2752 | symbol_plist (Lisp_Object sym) | |
2753 | { | |
d1c3da7b BT |
2754 | return scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-plist"), |
2755 | sym); | |
061cde10 BT |
2756 | } |
2757 | ||
00382e8b | 2758 | INLINE void |
c644523b DA |
2759 | set_symbol_plist (Lisp_Object sym, Lisp_Object plist) |
2760 | { | |
d1c3da7b BT |
2761 | scm_call_2 (scm_c_public_ref ("language elisp runtime", "set-symbol-plist!"), |
2762 | sym, plist); | |
c644523b DA |
2763 | } |
2764 | ||
a04e2c62 DA |
2765 | /* Buffer-local (also frame-local) variable access functions. */ |
2766 | ||
00382e8b | 2767 | INLINE int |
a04e2c62 DA |
2768 | blv_found (struct Lisp_Buffer_Local_Value *blv) |
2769 | { | |
2770 | eassert (blv->found == !EQ (blv->defcell, blv->valcell)); | |
2771 | return blv->found; | |
2772 | } | |
2773 | ||
c644523b DA |
2774 | /* Set overlay's property list. */ |
2775 | ||
00382e8b | 2776 | INLINE void |
c644523b DA |
2777 | set_overlay_plist (Lisp_Object overlay, Lisp_Object plist) |
2778 | { | |
2779 | XOVERLAY (overlay)->plist = plist; | |
2780 | } | |
2781 | ||
ad8c997f DA |
2782 | /* Get text properties of S. */ |
2783 | ||
00382e8b | 2784 | INLINE INTERVAL |
0c94c8d6 | 2785 | string_intervals (Lisp_Object s) |
ad8c997f DA |
2786 | { |
2787 | return XSTRING (s)->intervals; | |
2788 | } | |
2789 | ||
2790 | /* Set text properties of S to I. */ | |
2791 | ||
00382e8b | 2792 | INLINE void |
0c94c8d6 | 2793 | set_string_intervals (Lisp_Object s, INTERVAL i) |
ad8c997f DA |
2794 | { |
2795 | XSTRING (s)->intervals = i; | |
2796 | } | |
2797 | ||
742af32f PE |
2798 | /* Set a Lisp slot in TABLE to VAL. Most code should use this instead |
2799 | of setting slots directly. */ | |
2800 | ||
00382e8b | 2801 | INLINE void |
742af32f PE |
2802 | set_char_table_defalt (Lisp_Object table, Lisp_Object val) |
2803 | { | |
2804 | XCHAR_TABLE (table)->defalt = val; | |
2805 | } | |
00382e8b | 2806 | INLINE void |
742af32f PE |
2807 | set_char_table_purpose (Lisp_Object table, Lisp_Object val) |
2808 | { | |
2809 | XCHAR_TABLE (table)->purpose = val; | |
2810 | } | |
2811 | ||
a098c930 DA |
2812 | /* Set different slots in (sub)character tables. */ |
2813 | ||
00382e8b | 2814 | INLINE void |
34dabdb7 | 2815 | set_char_table_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
2816 | { |
2817 | eassert (0 <= idx && idx < CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table))); | |
2818 | XCHAR_TABLE (table)->extras[idx] = val; | |
2819 | } | |
2820 | ||
00382e8b | 2821 | INLINE void |
34dabdb7 | 2822 | set_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
2823 | { |
2824 | eassert (0 <= idx && idx < (1 << CHARTAB_SIZE_BITS_0)); | |
2825 | XCHAR_TABLE (table)->contents[idx] = val; | |
2826 | } | |
2827 | ||
00382e8b | 2828 | INLINE void |
34dabdb7 | 2829 | set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
a098c930 DA |
2830 | { |
2831 | XSUB_CHAR_TABLE (table)->contents[idx] = val; | |
2832 | } | |
2833 | ||
f6d62986 | 2834 | /* Defined in data.c. */ |
73880000 | 2835 | extern Lisp_Object Qnil_, Qt_; |
73bfe891 | 2836 | extern Lisp_Object Qquote, Qunbound; |
3cfe6dfd | 2837 | extern Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; |
955cbe7b | 2838 | extern Lisp_Object Qerror, Qquit, Qargs_out_of_range; |
3cfe6dfd | 2839 | extern Lisp_Object Qvoid_variable, Qvoid_function; |
955cbe7b | 2840 | extern Lisp_Object Qinvalid_read_syntax; |
3cfe6dfd | 2841 | extern Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; |
71873e2b | 2842 | extern Lisp_Object Quser_error, Qend_of_file, Qarith_error, Qmark_inactive; |
3cfe6dfd | 2843 | extern Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
6b61353c | 2844 | extern Lisp_Object Qtext_read_only; |
e6cba650 | 2845 | extern Lisp_Object Qinteractive_form; |
99f3388e | 2846 | extern Lisp_Object Qcircular_list; |
73bfe891 PE |
2847 | extern Lisp_Object Qsequencep; |
2848 | extern Lisp_Object Qchar_or_string_p, Qinteger_or_marker_p; | |
955cbe7b | 2849 | extern Lisp_Object Qfboundp; |
62947569 | 2850 | extern Lisp_Object Qspecial_operator; |
6b61353c | 2851 | |
3cfe6dfd JB |
2852 | extern Lisp_Object Qcdr; |
2853 | ||
c990426a | 2854 | extern Lisp_Object Qrange_error, Qoverflow_error; |
3cfe6dfd | 2855 | |
73bfe891 | 2856 | extern Lisp_Object Qnumber_or_marker_p; |
6b61353c | 2857 | |
b52d6985 | 2858 | extern Lisp_Object Qbuffer, Qinteger, Qsymbol; |
3cfe6dfd | 2859 | |
e7032e7c | 2860 | /* Defined in data.c. */ |
383e0970 | 2861 | extern Lisp_Object indirect_function (Lisp_Object); |
383e0970 | 2862 | extern Lisp_Object find_symbol_value (Lisp_Object); |
ebb99847 BR |
2863 | enum Arith_Comparison { |
2864 | ARITH_EQUAL, | |
2865 | ARITH_NOTEQUAL, | |
2866 | ARITH_LESS, | |
2867 | ARITH_GRTR, | |
2868 | ARITH_LESS_OR_EQUAL, | |
2869 | ARITH_GRTR_OR_EQUAL | |
2870 | }; | |
2871 | extern Lisp_Object arithcompare (Lisp_Object num1, Lisp_Object num2, | |
2872 | enum Arith_Comparison comparison); | |
2f69f2ec | 2873 | |
be44ca6c PE |
2874 | /* Convert the integer I to an Emacs representation, either the integer |
2875 | itself, or a cons of two or three integers, or if all else fails a float. | |
2876 | I should not have side effects. */ | |
2877 | #define INTEGER_TO_CONS(i) \ | |
2878 | (! FIXNUM_OVERFLOW_P (i) \ | |
2879 | ? make_number (i) \ | |
2880 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \ | |
2881 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \ | |
2882 | && FIXNUM_OVERFLOW_P ((i) >> 16)) \ | |
2883 | ? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \ | |
2884 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \ | |
2885 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \ | |
2886 | && FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \ | |
2887 | ? Fcons (make_number ((i) >> 16 >> 24), \ | |
2888 | Fcons (make_number ((i) >> 16 & 0xffffff), \ | |
2889 | make_number ((i) & 0xffff))) \ | |
2890 | : make_float (i)) | |
2891 | ||
2892 | /* Convert the Emacs representation CONS back to an integer of type | |
2893 | TYPE, storing the result the variable VAR. Signal an error if CONS | |
2894 | is not a valid representation or is out of range for TYPE. */ | |
2895 | #define CONS_TO_INTEGER(cons, type, var) \ | |
2896 | (TYPE_SIGNED (type) \ | |
2897 | ? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \ | |
2898 | : ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type)))) | |
2899 | extern intmax_t cons_to_signed (Lisp_Object, intmax_t, intmax_t); | |
2900 | extern uintmax_t cons_to_unsigned (Lisp_Object, uintmax_t); | |
2901 | ||
844e0de1 | 2902 | extern sym_t indirect_variable (sym_t ); |
845ca893 PE |
2903 | extern _Noreturn void args_out_of_range (Lisp_Object, Lisp_Object); |
2904 | extern _Noreturn void args_out_of_range_3 (Lisp_Object, Lisp_Object, | |
2905 | Lisp_Object); | |
ce5b453a | 2906 | extern Lisp_Object do_symval_forwarding (union Lisp_Fwd *); |
de1339b0 | 2907 | extern void set_internal (Lisp_Object, Lisp_Object, Lisp_Object, bool); |
383e0970 | 2908 | extern void syms_of_data (void); |
844e0de1 | 2909 | extern void swap_in_global_binding (sym_t ); |
3cfe6dfd | 2910 | |
a37e10f9 | 2911 | /* Defined in cmds.c */ |
383e0970 J |
2912 | extern void syms_of_cmds (void); |
2913 | extern void keys_of_cmds (void); | |
a37e10f9 | 2914 | |
e7032e7c | 2915 | /* Defined in coding.c. */ |
2f7c71a1 | 2916 | extern Lisp_Object Qcharset; |
d311d28c | 2917 | extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t, |
f10fe38f | 2918 | ptrdiff_t, bool, bool, Lisp_Object); |
383e0970 J |
2919 | extern void init_coding (void); |
2920 | extern void init_coding_once (void); | |
2921 | extern void syms_of_coding (void); | |
1842abb2 | 2922 | |
e7032e7c | 2923 | /* Defined in character.c. */ |
d311d28c PE |
2924 | extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t); |
2925 | extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t); | |
2f7c71a1 AS |
2926 | extern void syms_of_character (void); |
2927 | ||
e7032e7c | 2928 | /* Defined in charset.c. */ |
383e0970 J |
2929 | extern void init_charset (void); |
2930 | extern void init_charset_once (void); | |
2931 | extern void syms_of_charset (void); | |
8f924df7 KH |
2932 | /* Structure forward declarations. */ |
2933 | struct charset; | |
5e741a41 | 2934 | |
e7032e7c | 2935 | /* Defined in syntax.c. */ |
383e0970 J |
2936 | extern void init_syntax_once (void); |
2937 | extern void syms_of_syntax (void); | |
a37e10f9 | 2938 | |
e7032e7c | 2939 | /* Defined in fns.c. */ |
99f3388e | 2940 | extern Lisp_Object QCrehash_size, QCrehash_threshold; |
ca9ce8f2 | 2941 | enum { NEXT_ALMOST_PRIME_LIMIT = 11 }; |
5994c183 | 2942 | extern EMACS_INT next_almost_prime (EMACS_INT) ATTRIBUTE_CONST; |
d311d28c | 2943 | extern Lisp_Object larger_vector (Lisp_Object, ptrdiff_t, ptrdiff_t); |
383e0970 | 2944 | extern void sweep_weak_hash_tables (void); |
e6cba650 | 2945 | extern Lisp_Object Qcursor_in_echo_area; |
3cfe6dfd | 2946 | extern Lisp_Object Qstring_lessp; |
53371430 | 2947 | extern Lisp_Object QCsize, QCtest, QCweakness, Qequal, Qeq; |
3cc5a532 | 2948 | EMACS_UINT hash_string (char const *, ptrdiff_t); |
0de4bb68 | 2949 | EMACS_UINT sxhash (Lisp_Object, int); |
b7432bb2 SM |
2950 | Lisp_Object make_hash_table (struct hash_table_test, Lisp_Object, Lisp_Object, |
2951 | Lisp_Object, Lisp_Object); | |
d3411f89 PE |
2952 | ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object, EMACS_UINT *); |
2953 | ptrdiff_t hash_put (struct Lisp_Hash_Table *, Lisp_Object, Lisp_Object, | |
0de4bb68 | 2954 | EMACS_UINT); |
53371430 | 2955 | extern struct hash_table_test hashtest_eql, hashtest_equal; |
51e12e8e DA |
2956 | extern void validate_subarray (Lisp_Object, Lisp_Object, Lisp_Object, |
2957 | ptrdiff_t, ptrdiff_t *, ptrdiff_t *); | |
d311d28c PE |
2958 | extern Lisp_Object substring_both (Lisp_Object, ptrdiff_t, ptrdiff_t, |
2959 | ptrdiff_t, ptrdiff_t); | |
6318cde0 | 2960 | extern Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 | 2961 | extern Lisp_Object do_yes_or_no_p (Lisp_Object); |
383e0970 J |
2962 | extern Lisp_Object concat2 (Lisp_Object, Lisp_Object); |
2963 | extern Lisp_Object concat3 (Lisp_Object, Lisp_Object, Lisp_Object); | |
2964 | extern Lisp_Object nconc2 (Lisp_Object, Lisp_Object); | |
2965 | extern Lisp_Object assq_no_quit (Lisp_Object, Lisp_Object); | |
2966 | extern Lisp_Object assoc_no_quit (Lisp_Object, Lisp_Object); | |
2967 | extern void clear_string_char_byte_cache (void); | |
d311d28c PE |
2968 | extern ptrdiff_t string_char_to_byte (Lisp_Object, ptrdiff_t); |
2969 | extern ptrdiff_t string_byte_to_char (Lisp_Object, ptrdiff_t); | |
383e0970 J |
2970 | extern Lisp_Object string_to_multibyte (Lisp_Object); |
2971 | extern Lisp_Object string_make_unibyte (Lisp_Object); | |
42808ce3 | 2972 | extern void init_fns_once (void); |
383e0970 | 2973 | extern void syms_of_fns (void); |
2f69f2ec | 2974 | |
e7032e7c | 2975 | /* Defined in floatfns.c. */ |
383e0970 | 2976 | extern void syms_of_floatfns (void); |
3d608a86 | 2977 | extern Lisp_Object fmod_float (Lisp_Object x, Lisp_Object y); |
3cfe6dfd | 2978 | |
e7032e7c | 2979 | /* Defined in fringe.c. */ |
383e0970 J |
2980 | extern void syms_of_fringe (void); |
2981 | extern void init_fringe (void); | |
524c7aa6 PE |
2982 | #ifdef HAVE_WINDOW_SYSTEM |
2983 | extern void mark_fringe_data (void); | |
383e0970 | 2984 | extern void init_fringe_once (void); |
524c7aa6 | 2985 | #endif /* HAVE_WINDOW_SYSTEM */ |
6b61353c | 2986 | |
e7032e7c | 2987 | /* Defined in image.c. */ |
955cbe7b PE |
2988 | extern Lisp_Object QCascent, QCmargin, QCrelief; |
2989 | extern Lisp_Object QCconversion; | |
0766b489 | 2990 | extern int x_bitmap_mask (struct frame *, ptrdiff_t); |
aa15c6bb | 2991 | extern void reset_image_types (void); |
383e0970 | 2992 | extern void syms_of_image (void); |
6b61353c | 2993 | |
e7032e7c | 2994 | /* Defined in insdel.c. */ |
b8b31967 | 2995 | extern Lisp_Object Qinhibit_modification_hooks; |
73bfe891 | 2996 | extern Lisp_Object Qregion_extract_function; |
d311d28c | 2997 | extern void move_gap_both (ptrdiff_t, ptrdiff_t); |
845ca893 | 2998 | extern _Noreturn void buffer_overflow (void); |
d311d28c | 2999 | extern void make_gap (ptrdiff_t); |
eefd7278 | 3000 | extern void make_gap_1 (struct buffer *, ptrdiff_t); |
d311d28c | 3001 | extern ptrdiff_t copy_text (const unsigned char *, unsigned char *, |
a08d4ba7 | 3002 | ptrdiff_t, bool, bool); |
ae19ba7c | 3003 | extern int count_combining_before (const unsigned char *, |
d311d28c | 3004 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
ae19ba7c | 3005 | extern int count_combining_after (const unsigned char *, |
d311d28c PE |
3006 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3007 | extern void insert (const char *, ptrdiff_t); | |
3008 | extern void insert_and_inherit (const char *, ptrdiff_t); | |
d311d28c | 3009 | extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3010 | bool, bool, bool); |
8a44e6d1 | 3011 | extern void insert_from_gap (ptrdiff_t, ptrdiff_t, bool text_at_gap_tail); |
d311d28c | 3012 | extern void insert_from_string (Lisp_Object, ptrdiff_t, ptrdiff_t, |
a08d4ba7 PE |
3013 | ptrdiff_t, ptrdiff_t, bool); |
3014 | extern void insert_from_buffer (struct buffer *, ptrdiff_t, ptrdiff_t, bool); | |
ae19ba7c SM |
3015 | extern void insert_char (int); |
3016 | extern void insert_string (const char *); | |
d311d28c PE |
3017 | extern void insert_before_markers (const char *, ptrdiff_t); |
3018 | extern void insert_before_markers_and_inherit (const char *, ptrdiff_t); | |
3019 | extern void insert_from_string_before_markers (Lisp_Object, ptrdiff_t, | |
3020 | ptrdiff_t, ptrdiff_t, | |
a08d4ba7 | 3021 | ptrdiff_t, bool); |
d311d28c | 3022 | extern void del_range (ptrdiff_t, ptrdiff_t); |
a08d4ba7 PE |
3023 | extern Lisp_Object del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool); |
3024 | extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool); | |
3025 | extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool); | |
d311d28c | 3026 | extern Lisp_Object del_range_2 (ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3027 | ptrdiff_t, ptrdiff_t, bool); |
00012b86 | 3028 | extern void modify_text (ptrdiff_t, ptrdiff_t); |
d311d28c | 3029 | extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
00012b86 | 3030 | extern void prepare_to_modify_buffer_1 (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
37c790b3 | 3031 | extern void invalidate_buffer_caches (struct buffer *, ptrdiff_t, ptrdiff_t); |
d311d28c PE |
3032 | extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3033 | extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t, | |
3034 | ptrdiff_t, ptrdiff_t); | |
3035 | extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t, | |
3036 | ptrdiff_t, ptrdiff_t); | |
a08d4ba7 | 3037 | extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object, bool, bool, bool); |
d311d28c | 3038 | extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3039 | const char *, ptrdiff_t, ptrdiff_t, bool); |
ae19ba7c | 3040 | extern void syms_of_insdel (void); |
c98adc1b | 3041 | |
e7032e7c | 3042 | /* Defined in dispnew.c. */ |
9e4bf381 PE |
3043 | #if (defined PROFILING \ |
3044 | && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__)) | |
845ca893 | 3045 | _Noreturn void __executable_start (void); |
9e4bf381 | 3046 | #endif |
7684e57b | 3047 | extern Lisp_Object Vwindow_system; |
59ea14cd | 3048 | extern Lisp_Object sit_for (Lisp_Object, bool, int); |
1747fb16 | 3049 | |
e7032e7c | 3050 | /* Defined in xdisp.c. */ |
c6ae41f3 | 3051 | extern Lisp_Object Qinhibit_point_motion_hooks; |
73bfe891 | 3052 | extern Lisp_Object Qinhibit_redisplay; |
99f3388e | 3053 | extern Lisp_Object Qmenu_bar_update_hook; |
29208e82 | 3054 | extern Lisp_Object Qwindow_scroll_functions; |
99f3388e | 3055 | extern Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
73bfe891 | 3056 | extern Lisp_Object Qtext, Qboth, Qboth_horiz, Qtext_image_horiz; |
89dc303e | 3057 | extern Lisp_Object Qspace, Qcenter, QCalign_to; |
73bfe891 | 3058 | extern Lisp_Object Qbar, Qhbar, Qhollow; |
99f3388e | 3059 | extern Lisp_Object Qleft_margin, Qright_margin; |
89dc303e | 3060 | extern Lisp_Object QCdata, QCfile; |
99f3388e | 3061 | extern Lisp_Object QCmap; |
e6cba650 | 3062 | extern Lisp_Object Qrisky_local_variable; |
e08813d0 | 3063 | extern bool noninteractive_need_newline; |
986113df | 3064 | extern Lisp_Object echo_area_buffer[2]; |
89dc303e | 3065 | extern void add_to_log (const char *, Lisp_Object, Lisp_Object); |
383e0970 J |
3066 | extern void check_message_stack (void); |
3067 | extern void setup_echo_area_for_printing (int); | |
fce31d69 | 3068 | extern bool push_message (void); |
27e498e6 | 3069 | extern void pop_message_unwind (void); |
383e0970 | 3070 | extern Lisp_Object restore_message_unwind (Lisp_Object); |
383e0970 J |
3071 | extern void restore_message (void); |
3072 | extern Lisp_Object current_message (void); | |
44ad1cf7 | 3073 | extern void clear_message (bool, bool); |
1e973bc7 | 3074 | extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
a8fe7202 AS |
3075 | extern void message1 (const char *); |
3076 | extern void message1_nolog (const char *); | |
b09cca6a SM |
3077 | extern void message3 (Lisp_Object); |
3078 | extern void message3_nolog (Lisp_Object); | |
0063fdb1 | 3079 | extern void message_dolog (const char *, ptrdiff_t, bool, bool); |
a8fe7202 | 3080 | extern void message_with_string (const char *, Lisp_Object, int); |
383e0970 J |
3081 | extern void message_log_maybe_newline (void); |
3082 | extern void update_echo_area (void); | |
d311d28c | 3083 | extern void truncate_echo_area (ptrdiff_t); |
383e0970 | 3084 | extern void redisplay (void); |
c4bf5bc3 | 3085 | |
383e0970 J |
3086 | void set_frame_cursor_types (struct frame *, Lisp_Object); |
3087 | extern void syms_of_xdisp (void); | |
3088 | extern void init_xdisp (void); | |
3089 | extern Lisp_Object safe_eval (Lisp_Object); | |
d311d28c | 3090 | extern int pos_visible_p (struct window *, ptrdiff_t, int *, |
383e0970 | 3091 | int *, int *, int *, int *, int *); |
c98adc1b | 3092 | |
e7032e7c | 3093 | /* Defined in xsettings.c. */ |
383e0970 | 3094 | extern void syms_of_xsettings (void); |
637fa988 | 3095 | |
15b0ced5 | 3096 | /* Defined in vm-limit.c. */ |
261cb4bb | 3097 | extern void memory_warnings (void *, void (*warnfun) (const char *)); |
9043c90a | 3098 | |
e7032e7c | 3099 | /* Defined in alloc.c. */ |
383e0970 | 3100 | extern void check_pure_size (void); |
73ebd38f | 3101 | extern void free_misc (Lisp_Object); |
69f7f524 | 3102 | extern void allocate_string_data (Lisp_Object, EMACS_INT, EMACS_INT); |
a8fe7202 | 3103 | extern void malloc_warning (const char *); |
845ca893 PE |
3104 | extern _Noreturn void memory_full (size_t); |
3105 | extern _Noreturn void buffer_memory_full (ptrdiff_t); | |
69003fd8 | 3106 | #if defined REL_ALLOC && !defined SYSTEM_MALLOC |
84dfc8a7 | 3107 | extern void refill_memory_reserve (void); |
69003fd8 | 3108 | #endif |
50c77428 | 3109 | extern const char *pending_malloc_warning; |
9730daca | 3110 | extern Lisp_Object zero_vector; |
2f7c71a1 AS |
3111 | extern Lisp_Object list1 (Lisp_Object); |
3112 | extern Lisp_Object list2 (Lisp_Object, Lisp_Object); | |
3113 | extern Lisp_Object list3 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3114 | extern Lisp_Object list4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3115 | extern Lisp_Object list5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, | |
3116 | Lisp_Object); | |
3438fe21 | 3117 | enum constype {CONSTYPE_HEAP, CONSTYPE_PURE}; |
694b6c97 | 3118 | extern Lisp_Object listn (enum constype, ptrdiff_t, Lisp_Object, ...); |
3de717bd DA |
3119 | |
3120 | /* Build a frequently used 2/3/4-integer lists. */ | |
3121 | ||
00382e8b | 3122 | INLINE Lisp_Object |
3de717bd DA |
3123 | list2i (EMACS_INT x, EMACS_INT y) |
3124 | { | |
3125 | return list2 (make_number (x), make_number (y)); | |
3126 | } | |
3127 | ||
00382e8b | 3128 | INLINE Lisp_Object |
3de717bd DA |
3129 | list3i (EMACS_INT x, EMACS_INT y, EMACS_INT w) |
3130 | { | |
3131 | return list3 (make_number (x), make_number (y), make_number (w)); | |
3132 | } | |
3133 | ||
00382e8b | 3134 | INLINE Lisp_Object |
3de717bd DA |
3135 | list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h) |
3136 | { | |
3137 | return list4 (make_number (x), make_number (y), | |
3138 | make_number (w), make_number (h)); | |
3139 | } | |
3140 | ||
2cf00efc PE |
3141 | extern Lisp_Object make_uninit_bool_vector (EMACS_INT); |
3142 | extern Lisp_Object bool_vector_fill (Lisp_Object, Lisp_Object); | |
845ca893 | 3143 | extern _Noreturn void string_overflow (void); |
d311d28c | 3144 | extern Lisp_Object make_string (const char *, ptrdiff_t); |
26bccfae PE |
3145 | extern Lisp_Object make_formatted_string (char *, const char *, ...) |
3146 | ATTRIBUTE_FORMAT_PRINTF (2, 3); | |
d311d28c | 3147 | extern Lisp_Object make_unibyte_string (const char *, ptrdiff_t); |
d7ea76b4 DA |
3148 | |
3149 | /* Make unibyte string from C string when the length isn't known. */ | |
3150 | ||
00382e8b | 3151 | INLINE Lisp_Object |
d7ea76b4 DA |
3152 | build_unibyte_string (const char *str) |
3153 | { | |
3154 | return make_unibyte_string (str, strlen (str)); | |
3155 | } | |
3156 | ||
d311d28c | 3157 | extern Lisp_Object make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t); |
0c90b9ee | 3158 | extern Lisp_Object make_event_array (ptrdiff_t, Lisp_Object *); |
413d18e7 EZ |
3159 | extern Lisp_Object make_uninit_string (EMACS_INT); |
3160 | extern Lisp_Object make_uninit_multibyte_string (EMACS_INT, EMACS_INT); | |
d311d28c | 3161 | extern Lisp_Object make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t); |
14162469 | 3162 | extern Lisp_Object make_specified_string (const char *, |
fce31d69 PE |
3163 | ptrdiff_t, ptrdiff_t, bool); |
3164 | extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool); | |
2a0213a6 DA |
3165 | extern Lisp_Object make_pure_c_string (const char *, ptrdiff_t); |
3166 | ||
3167 | /* Make a string allocated in pure space, use STR as string data. */ | |
3168 | ||
00382e8b | 3169 | INLINE Lisp_Object |
2a0213a6 DA |
3170 | build_pure_c_string (const char *str) |
3171 | { | |
3172 | return make_pure_c_string (str, strlen (str)); | |
3173 | } | |
1130ecfc DA |
3174 | |
3175 | /* Make a string from the data at STR, treating it as multibyte if the | |
3176 | data warrants. */ | |
3177 | ||
00382e8b | 3178 | INLINE Lisp_Object |
1130ecfc DA |
3179 | build_string (const char *str) |
3180 | { | |
3181 | return make_string (str, strlen (str)); | |
3182 | } | |
3183 | ||
383e0970 | 3184 | extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object); |
3017f87f | 3185 | extern void make_byte_code (struct Lisp_Vector *); |
7f73dc9d | 3186 | extern Lisp_Object Qchar_table_extra_slots; |
383e0970 | 3187 | extern struct Lisp_Vector *allocate_vector (EMACS_INT); |
25721f5b | 3188 | |
8b17a8b9 | 3189 | /* Make an uninitialized vector for SIZE objects. NOTE: you must |
25721f5b DA |
3190 | be sure that GC cannot happen until the vector is completely |
3191 | initialized. E.g. the following code is likely to crash: | |
3192 | ||
3193 | v = make_uninit_vector (3); | |
3194 | ASET (v, 0, obj0); | |
3195 | ASET (v, 1, Ffunction_can_gc ()); | |
3196 | ASET (v, 2, obj1); */ | |
3197 | ||
00382e8b | 3198 | INLINE Lisp_Object |
25721f5b DA |
3199 | make_uninit_vector (ptrdiff_t size) |
3200 | { | |
3201 | Lisp_Object v; | |
3202 | struct Lisp_Vector *p; | |
3203 | ||
3204 | p = allocate_vector (size); | |
3205 | XSETVECTOR (v, p); | |
3206 | return v; | |
3207 | } | |
3208 | ||
914adc42 | 3209 | extern struct Lisp_Vector *allocate_pseudovector (int, int, enum pvec_type); |
30f95089 SM |
3210 | #define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \ |
3211 | ((typ*) \ | |
3212 | allocate_pseudovector \ | |
3213 | (VECSIZE (typ), PSEUDOVECSIZE (typ, field), tag)) | |
383e0970 J |
3214 | extern struct Lisp_Hash_Table *allocate_hash_table (void); |
3215 | extern struct window *allocate_window (void); | |
3216 | extern struct frame *allocate_frame (void); | |
3217 | extern struct Lisp_Process *allocate_process (void); | |
3218 | extern struct terminal *allocate_terminal (void); | |
383e0970 J |
3219 | extern Lisp_Object make_float (double); |
3220 | extern void display_malloc_warning (void); | |
1396ac86 PE |
3221 | extern Lisp_Object make_save_int_int_int (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
3222 | extern Lisp_Object make_save_obj_obj_obj_obj (Lisp_Object, Lisp_Object, | |
3223 | Lisp_Object, Lisp_Object); | |
3224 | extern Lisp_Object make_save_ptr (void *); | |
3225 | extern Lisp_Object make_save_ptr_int (void *, ptrdiff_t); | |
3226 | extern Lisp_Object make_save_ptr_ptr (void *, void *); | |
3227 | extern Lisp_Object make_save_funcptr_ptr_obj (void (*) (void), void *, | |
3228 | Lisp_Object); | |
3229 | extern Lisp_Object make_save_memory (Lisp_Object *, ptrdiff_t); | |
27e498e6 | 3230 | extern void free_save_value (Lisp_Object); |
d7a7fda3 | 3231 | extern Lisp_Object build_overlay (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 J |
3232 | extern void init_alloc_once (void); |
3233 | extern void init_alloc (void); | |
3234 | extern void syms_of_alloc (void); | |
3235 | extern struct buffer * allocate_buffer (void); | |
3236 | extern int valid_lisp_object_p (Lisp_Object); | |
8d3103b1 | 3237 | extern int relocatable_string_data_p (const char *); |
3cfe6dfd | 3238 | |
a041960a | 3239 | #ifdef REL_ALLOC |
e7032e7c | 3240 | /* Defined in ralloc.c. */ |
74fde0f4 | 3241 | extern void *r_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); |
a041960a | 3242 | extern void r_alloc_free (void **); |
74fde0f4 | 3243 | extern void *r_re_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); |
a041960a | 3244 | extern void r_alloc_reset_variable (void **, void **); |
57b81a9f | 3245 | extern void r_alloc_inhibit_buffer_relocation (int); |
a041960a PE |
3246 | #endif |
3247 | ||
e7032e7c | 3248 | /* Defined in chartab.c. */ |
383e0970 | 3249 | extern Lisp_Object copy_char_table (Lisp_Object); |
383e0970 J |
3250 | extern Lisp_Object char_table_ref_and_range (Lisp_Object, int, |
3251 | int *, int *); | |
e757f1c6 | 3252 | extern void char_table_set_range (Lisp_Object, int, int, Lisp_Object); |
383e0970 J |
3253 | extern void map_char_table (void (*) (Lisp_Object, Lisp_Object, |
3254 | Lisp_Object), | |
3255 | Lisp_Object, Lisp_Object, Lisp_Object); | |
e6cba650 DN |
3256 | extern void map_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object), |
3257 | Lisp_Object, Lisp_Object, | |
3258 | Lisp_Object, struct charset *, | |
3259 | unsigned, unsigned); | |
5cc7f7af | 3260 | extern Lisp_Object uniprop_table (Lisp_Object); |
383e0970 | 3261 | extern void syms_of_chartab (void); |
1842abb2 | 3262 | |
e7032e7c | 3263 | /* Defined in print.c. */ |
3cfe6dfd | 3264 | extern Lisp_Object Vprin1_to_string_buffer; |
42c8bc9b | 3265 | extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE; |
29208e82 | 3266 | extern Lisp_Object Qstandard_output; |
9453ea7b | 3267 | extern Lisp_Object Qexternal_debugging_output; |
383e0970 | 3268 | extern void temp_output_buffer_setup (const char *); |
29208e82 | 3269 | extern int print_level; |
3cfe6dfd | 3270 | extern Lisp_Object Qprint_escape_newlines; |
a8fe7202 | 3271 | extern void write_string (const char *, int); |
a8fe7202 AS |
3272 | extern void print_error_message (Lisp_Object, Lisp_Object, const char *, |
3273 | Lisp_Object); | |
526a2be7 | 3274 | extern Lisp_Object internal_with_output_to_temp_buffer |
383e0970 | 3275 | (const char *, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
1915d8d6 | 3276 | #define FLOAT_TO_STRING_BUFSIZE 350 |
99027bdd | 3277 | extern int float_to_string (char *, double); |
cf4bb06d | 3278 | extern void init_print_once (void); |
383e0970 | 3279 | extern void syms_of_print (void); |
526a2be7 | 3280 | |
e7032e7c | 3281 | /* Defined in doprnt.c. */ |
c2d1e36d PE |
3282 | extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *, |
3283 | va_list); | |
62f19c19 PE |
3284 | extern ptrdiff_t esprintf (char *, char const *, ...) |
3285 | ATTRIBUTE_FORMAT_PRINTF (2, 3); | |
62f19c19 PE |
3286 | extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, |
3287 | char const *, ...) | |
3288 | ATTRIBUTE_FORMAT_PRINTF (5, 6); | |
3289 | extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, | |
3290 | char const *, va_list) | |
3291 | ATTRIBUTE_FORMAT_PRINTF (5, 0); | |
e6c3da20 | 3292 | |
ea6c7ae6 | 3293 | /* Defined in lread.c. */ |
3cfe6dfd | 3294 | extern Lisp_Object Qvariable_documentation, Qstandard_input; |
99f3388e | 3295 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
a411ac43 | 3296 | extern Lisp_Object Qlexical_binding; |
383e0970 | 3297 | extern Lisp_Object check_obarray (Lisp_Object); |
e8df9267 DA |
3298 | extern Lisp_Object intern_1 (const char *, ptrdiff_t); |
3299 | extern Lisp_Object intern_c_string_1 (const char *, ptrdiff_t); | |
d23d13c0 | 3300 | extern Lisp_Object obhash (Lisp_Object); |
00382e8b | 3301 | INLINE void |
84575e67 PE |
3302 | LOADHIST_ATTACH (Lisp_Object x) |
3303 | { | |
3304 | if (initialized) | |
3305 | Vcurrent_load_list = Fcons (x, Vcurrent_load_list); | |
3306 | } | |
383e0970 | 3307 | extern int openp (Lisp_Object, Lisp_Object, Lisp_Object, |
518c40a2 | 3308 | Lisp_Object *, Lisp_Object, bool); |
7cded46f | 3309 | extern Lisp_Object string_to_number (char const *, int, bool); |
383e0970 J |
3310 | extern void map_obarray (Lisp_Object, void (*) (Lisp_Object, Lisp_Object), |
3311 | Lisp_Object); | |
a8fe7202 | 3312 | extern void dir_warning (const char *, Lisp_Object); |
383e0970 J |
3313 | extern void init_obarray (void); |
3314 | extern void init_lread (void); | |
3315 | extern void syms_of_lread (void); | |
3cfe6dfd | 3316 | |
00382e8b | 3317 | INLINE Lisp_Object |
e8df9267 DA |
3318 | intern (const char *str) |
3319 | { | |
3320 | return intern_1 (str, strlen (str)); | |
3321 | } | |
3322 | ||
00382e8b | 3323 | INLINE Lisp_Object |
e8df9267 DA |
3324 | intern_c_string (const char *str) |
3325 | { | |
3326 | return intern_c_string_1 (str, strlen (str)); | |
3327 | } | |
3328 | ||
f6d62986 | 3329 | /* Defined in eval.c. */ |
73bfe891 | 3330 | extern Lisp_Object Qexit, Qinteractive, Qcommandp, Qmacro; |
a411ac43 | 3331 | extern Lisp_Object Qinhibit_quit, Qinternal_interpreter_environment, Qclosure; |
955cbe7b | 3332 | extern Lisp_Object Qand_rest; |
3cfe6dfd | 3333 | extern Lisp_Object Vautoload_queue; |
fab88cb7 | 3334 | extern Lisp_Object Vsignaling_function; |
d1f55f16 | 3335 | extern Lisp_Object inhibit_lisp_code; |
244ed907 | 3336 | extern struct handler *handlerlist; |
adf2aa61 | 3337 | |
f1b6e5fc SM |
3338 | /* To run a normal hook, use the appropriate function from the list below. |
3339 | The calling convention: | |
3340 | ||
846d69ac | 3341 | if (!NILP (Vrun_hooks)) |
f1b6e5fc SM |
3342 | call1 (Vrun_hooks, Qmy_funny_hook); |
3343 | ||
3344 | should no longer be used. */ | |
3cfe6dfd | 3345 | extern Lisp_Object Vrun_hooks; |
383e0970 | 3346 | extern void run_hook_with_args_2 (Lisp_Object, Lisp_Object, Lisp_Object); |
f66c7cf8 | 3347 | extern Lisp_Object run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args, |
f6d62986 | 3348 | Lisp_Object (*funcall) |
f66c7cf8 | 3349 | (ptrdiff_t nargs, Lisp_Object *args)); |
845ca893 PE |
3350 | extern _Noreturn void xsignal (Lisp_Object, Lisp_Object); |
3351 | extern _Noreturn void xsignal0 (Lisp_Object); | |
3352 | extern _Noreturn void xsignal1 (Lisp_Object, Lisp_Object); | |
3353 | extern _Noreturn void xsignal2 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3354 | extern _Noreturn void xsignal3 (Lisp_Object, Lisp_Object, Lisp_Object, | |
3355 | Lisp_Object); | |
3356 | extern _Noreturn void signal_error (const char *, Lisp_Object); | |
defb1411 | 3357 | extern Lisp_Object eval_sub (Lisp_Object form); |
c0ff0ac2 | 3358 | extern Lisp_Object Ffuncall (ptrdiff_t nargs, Lisp_Object *args); |
383e0970 J |
3359 | extern Lisp_Object apply1 (Lisp_Object, Lisp_Object); |
3360 | extern Lisp_Object call0 (Lisp_Object); | |
3361 | extern Lisp_Object call1 (Lisp_Object, Lisp_Object); | |
3362 | extern Lisp_Object call2 (Lisp_Object, Lisp_Object, Lisp_Object); | |
3363 | extern Lisp_Object call3 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3364 | extern Lisp_Object call4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3365 | extern Lisp_Object call5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3366 | extern Lisp_Object call6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
3367 | extern Lisp_Object call7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); | |
383e0970 J |
3368 | extern Lisp_Object internal_catch (Lisp_Object, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
3369 | extern Lisp_Object internal_lisp_condition_case (Lisp_Object, Lisp_Object, Lisp_Object); | |
3370 | extern Lisp_Object internal_condition_case (Lisp_Object (*) (void), Lisp_Object, Lisp_Object (*) (Lisp_Object)); | |
3371 | extern Lisp_Object internal_condition_case_1 (Lisp_Object (*) (Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object)); | |
3372 | 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 |
3373 | extern Lisp_Object internal_condition_case_n |
3374 | (Lisp_Object (*) (ptrdiff_t, Lisp_Object *), ptrdiff_t, Lisp_Object *, | |
3375 | Lisp_Object, Lisp_Object (*) (Lisp_Object, ptrdiff_t, Lisp_Object *)); | |
383e0970 | 3376 | extern void specbind (Lisp_Object, Lisp_Object); |
5d1922cd | 3377 | extern void record_unwind_protect_1 (void (*) (Lisp_Object), Lisp_Object, bool); |
27e498e6 | 3378 | extern void record_unwind_protect (void (*) (Lisp_Object), Lisp_Object); |
5d1922cd | 3379 | extern void record_unwind_protect_ptr_1 (void (*) (void *), void *, bool); |
27e498e6 | 3380 | extern void record_unwind_protect_ptr (void (*) (void *), void *); |
5d1922cd | 3381 | extern void record_unwind_protect_int_1 (void (*) (int), int, bool); |
94fcd171 | 3382 | extern void record_unwind_protect_int (void (*) (int), int); |
5d1922cd | 3383 | extern void record_unwind_protect_void_1 (void (*) (void), bool); |
27e498e6 | 3384 | extern void record_unwind_protect_void (void (*) (void)); |
a26b12fa BT |
3385 | extern void dynwind_begin (void); |
3386 | extern void dynwind_end (void); | |
845ca893 PE |
3387 | extern _Noreturn void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
3388 | extern _Noreturn void verror (const char *, va_list) | |
3389 | ATTRIBUTE_FORMAT_PRINTF (1, 0); | |
27e498e6 | 3390 | extern void un_autoload (Lisp_Object); |
7f7e0167 | 3391 | extern Lisp_Object call_debugger (Lisp_Object arg); |
383e0970 | 3392 | extern void init_eval_once (void); |
6cd7a139 | 3393 | extern Lisp_Object safe_call (ptrdiff_t, Lisp_Object, ...); |
383e0970 | 3394 | extern Lisp_Object safe_call1 (Lisp_Object, Lisp_Object); |
58555d81 | 3395 | extern Lisp_Object safe_call2 (Lisp_Object, Lisp_Object, Lisp_Object); |
383e0970 J |
3396 | extern void init_eval (void); |
3397 | extern void syms_of_eval (void); | |
27e498e6 | 3398 | extern void unwind_body (Lisp_Object); |
2f592f95 SM |
3399 | extern void record_in_backtrace (Lisp_Object function, |
3400 | Lisp_Object *args, ptrdiff_t nargs); | |
3401 | extern void mark_specpdl (void); | |
3402 | extern void get_backtrace (Lisp_Object array); | |
3403 | Lisp_Object backtrace_top_function (void); | |
844e0de1 | 3404 | extern bool let_shadows_buffer_binding_p (sym_t symbol); |
2f592f95 | 3405 | extern bool let_shadows_global_binding_p (Lisp_Object symbol); |
6376ba30 BT |
3406 | extern _Noreturn SCM abort_to_prompt (SCM, SCM); |
3407 | extern SCM call_with_prompt (SCM, SCM, SCM); | |
3408 | extern SCM make_prompt_tag (void); | |
2f592f95 | 3409 | |
3cfe6dfd | 3410 | |
7abaf5cc | 3411 | /* Defined in editfns.c. */ |
e6cba650 | 3412 | extern Lisp_Object Qfield; |
383e0970 | 3413 | extern void insert1 (Lisp_Object); |
a8fe7202 | 3414 | extern Lisp_Object format2 (const char *, Lisp_Object, Lisp_Object); |
383e0970 J |
3415 | extern Lisp_Object save_excursion_save (void); |
3416 | extern Lisp_Object save_restriction_save (void); | |
27e498e6 PE |
3417 | extern void save_excursion_restore (Lisp_Object); |
3418 | extern void save_restriction_restore (Lisp_Object); | |
845ca893 | 3419 | extern _Noreturn void time_overflow (void); |
a08d4ba7 | 3420 | extern Lisp_Object make_buffer_string (ptrdiff_t, ptrdiff_t, bool); |
d311d28c | 3421 | extern Lisp_Object make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, |
a08d4ba7 | 3422 | ptrdiff_t, bool); |
383e0970 J |
3423 | extern void init_editfns (void); |
3424 | extern void syms_of_editfns (void); | |
a8fe7202 | 3425 | extern void set_time_zone_rule (const char *); |
3cfe6dfd | 3426 | |
7abaf5cc | 3427 | /* Defined in buffer.c. */ |
37ef52bb | 3428 | extern bool mouse_face_overlay_overlaps (Lisp_Object); |
845ca893 | 3429 | extern _Noreturn void nsberror (Lisp_Object); |
d311d28c PE |
3430 | extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t); |
3431 | extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t); | |
3432 | extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t); | |
37ef52bb | 3433 | extern void report_overlay_modification (Lisp_Object, Lisp_Object, bool, |
383e0970 | 3434 | Lisp_Object, Lisp_Object, Lisp_Object); |
37ef52bb | 3435 | extern bool overlay_touches_p (ptrdiff_t); |
9397e56f | 3436 | extern Lisp_Object other_buffer_safely (Lisp_Object); |
383e0970 | 3437 | extern Lisp_Object get_truename_buffer (Lisp_Object); |
383e0970 | 3438 | extern void init_buffer_once (void); |
0bbb27fc | 3439 | extern void init_buffer (int); |
383e0970 J |
3440 | extern void syms_of_buffer (void); |
3441 | extern void keys_of_buffer (void); | |
3cfe6dfd | 3442 | |
7abaf5cc | 3443 | /* Defined in marker.c. */ |
3cfe6dfd | 3444 | |
d311d28c PE |
3445 | extern ptrdiff_t marker_position (Lisp_Object); |
3446 | extern ptrdiff_t marker_byte_position (Lisp_Object); | |
383e0970 | 3447 | extern void clear_charpos_cache (struct buffer *); |
d311d28c PE |
3448 | extern ptrdiff_t buf_charpos_to_bytepos (struct buffer *, ptrdiff_t); |
3449 | extern ptrdiff_t buf_bytepos_to_charpos (struct buffer *, ptrdiff_t); | |
eeaea515 | 3450 | extern void unchain_marker (struct Lisp_Marker *marker); |
383e0970 | 3451 | extern Lisp_Object set_marker_restricted (Lisp_Object, Lisp_Object, Lisp_Object); |
d311d28c | 3452 | extern Lisp_Object set_marker_both (Lisp_Object, Lisp_Object, ptrdiff_t, ptrdiff_t); |
383e0970 | 3453 | extern Lisp_Object set_marker_restricted_both (Lisp_Object, Lisp_Object, |
eeaea515 | 3454 | ptrdiff_t, ptrdiff_t); |
657924ff | 3455 | extern Lisp_Object build_marker (struct buffer *, ptrdiff_t, ptrdiff_t); |
383e0970 | 3456 | extern void syms_of_marker (void); |
3cfe6dfd | 3457 | |
e7032e7c | 3458 | /* Defined in fileio.c. */ |
3cfe6dfd JB |
3459 | |
3460 | extern Lisp_Object Qfile_error; | |
86dfb7a8 | 3461 | extern Lisp_Object Qfile_notify_error; |
99f3388e | 3462 | extern Lisp_Object Qfile_exists_p; |
e6cba650 DN |
3463 | extern Lisp_Object Qfile_directory_p; |
3464 | extern Lisp_Object Qinsert_file_contents; | |
7684e57b | 3465 | extern Lisp_Object Qfile_name_history; |
383e0970 | 3466 | extern Lisp_Object expand_and_dir_to_file (Lisp_Object, Lisp_Object); |
94fcd171 PE |
3467 | extern Lisp_Object write_region (Lisp_Object, Lisp_Object, Lisp_Object, |
3468 | Lisp_Object, Lisp_Object, Lisp_Object, | |
3469 | Lisp_Object, int); | |
27e498e6 | 3470 | extern void close_file_unwind (int); |
5d1922cd | 3471 | extern void close_file_ptr_unwind (void *); |
f4b1eb36 | 3472 | extern void fclose_unwind (void *); |
5d1922cd | 3473 | extern void fclose_ptr_unwind (void *); |
27e498e6 | 3474 | extern void restore_point_unwind (Lisp_Object); |
a773ed9a | 3475 | extern _Noreturn void report_file_errno (const char *, Lisp_Object, int); |
845ca893 | 3476 | extern _Noreturn void report_file_error (const char *, Lisp_Object); |
7d80ea23 | 3477 | extern bool internal_delete_file (Lisp_Object); |
8654f9d7 | 3478 | extern Lisp_Object emacs_readlinkat (int, const char *); |
73dcdb9f PE |
3479 | extern bool file_directory_p (const char *); |
3480 | extern bool file_accessible_directory_p (const char *); | |
9fe43ff6 | 3481 | extern void init_fileio (void); |
383e0970 | 3482 | extern void syms_of_fileio (void); |
f75d7a91 | 3483 | extern Lisp_Object make_temp_name (Lisp_Object, bool); |
b86cfd28 | 3484 | extern Lisp_Object Qdelete_file; |
3cfe6dfd | 3485 | |
e7032e7c | 3486 | /* Defined in search.c. */ |
383e0970 | 3487 | extern void shrink_regexp_cache (void); |
383e0970 | 3488 | extern void restore_search_regs (void); |
383e0970 | 3489 | extern void record_unwind_save_match_data (void); |
dbd37a95 PE |
3490 | struct re_registers; |
3491 | extern struct re_pattern_buffer *compile_pattern (Lisp_Object, | |
3492 | struct re_registers *, | |
457882c2 | 3493 | Lisp_Object, bool, bool); |
d311d28c | 3494 | extern ptrdiff_t fast_string_match (Lisp_Object, Lisp_Object); |
d923b542 DA |
3495 | extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object, const char *, |
3496 | ptrdiff_t); | |
d311d28c PE |
3497 | extern ptrdiff_t fast_string_match_ignore_case (Lisp_Object, Lisp_Object); |
3498 | extern ptrdiff_t fast_looking_at (Lisp_Object, ptrdiff_t, ptrdiff_t, | |
3499 | ptrdiff_t, ptrdiff_t, Lisp_Object); | |
b5426561 DA |
3500 | extern ptrdiff_t find_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
3501 | ptrdiff_t, ptrdiff_t *, ptrdiff_t *, bool); | |
d2b36813 DA |
3502 | extern ptrdiff_t scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
3503 | ptrdiff_t, bool); | |
b5426561 DA |
3504 | extern ptrdiff_t find_newline_no_quit (ptrdiff_t, ptrdiff_t, |
3505 | ptrdiff_t, ptrdiff_t *); | |
2a14a4f1 DA |
3506 | extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t, |
3507 | ptrdiff_t, ptrdiff_t *); | |
383e0970 J |
3508 | extern void syms_of_search (void); |
3509 | extern void clear_regexp_cache (void); | |
3cfe6dfd | 3510 | |
464d5a5e | 3511 | /* Defined in minibuf.c. */ |
3cfe6dfd | 3512 | |
e6cba650 | 3513 | extern Lisp_Object Qcompletion_ignore_case; |
99f3388e | 3514 | extern Lisp_Object Vminibuffer_list; |
3cfe6dfd | 3515 | extern Lisp_Object last_minibuf_string; |
62f19c19 | 3516 | extern Lisp_Object get_minibuffer (EMACS_INT); |
383e0970 J |
3517 | extern void init_minibuf_once (void); |
3518 | extern void syms_of_minibuf (void); | |
3cfe6dfd | 3519 | |
464d5a5e | 3520 | /* Defined in callint.c. */ |
3cfe6dfd | 3521 | |
29208e82 | 3522 | extern Lisp_Object Qminus, Qplus; |
12b1389c | 3523 | extern Lisp_Object Qprogn; |
99f3388e | 3524 | extern Lisp_Object Qwhen; |
6e65b9cc | 3525 | extern Lisp_Object Qmouse_leave_buffer_hook; |
383e0970 | 3526 | extern void syms_of_callint (void); |
3cfe6dfd | 3527 | |
464d5a5e | 3528 | /* Defined in casefiddle.c. */ |
3cfe6dfd | 3529 | |
99f3388e | 3530 | extern Lisp_Object Qidentity; |
383e0970 J |
3531 | extern void syms_of_casefiddle (void); |
3532 | extern void keys_of_casefiddle (void); | |
3cfe6dfd | 3533 | |
464d5a5e | 3534 | /* Defined in casetab.c. */ |
1747fb16 | 3535 | |
383e0970 J |
3536 | extern void init_casetab_once (void); |
3537 | extern void syms_of_casetab (void); | |
1747fb16 | 3538 | |
464d5a5e | 3539 | /* Defined in keyboard.c. */ |
3cfe6dfd | 3540 | |
54cd1651 | 3541 | extern Lisp_Object echo_message_buffer; |
417750de | 3542 | extern struct kboard *echo_kboard; |
383e0970 | 3543 | extern void cancel_echoing (void); |
1425dcb6 | 3544 | extern Lisp_Object Qdisabled, QCfilter; |
73bfe891 | 3545 | extern Lisp_Object Qup, Qdown; |
464d5a5e | 3546 | extern Lisp_Object last_undo_boundary; |
9fa1de30 | 3547 | extern bool input_pending; |
383e0970 J |
3548 | extern Lisp_Object menu_bar_items (Lisp_Object); |
3549 | extern Lisp_Object tool_bar_items (Lisp_Object, int *); | |
383e0970 | 3550 | extern void discard_mouse_events (void); |
4d7e6e51 PE |
3551 | #ifdef USABLE_SIGIO |
3552 | void handle_input_available_signal (int); | |
3553 | #endif | |
58555d81 | 3554 | extern Lisp_Object pending_funcalls; |
9fa1de30 PE |
3555 | extern bool detect_input_pending (void); |
3556 | extern bool detect_input_pending_ignore_squeezables (void); | |
3557 | extern bool detect_input_pending_run_timers (bool); | |
383e0970 | 3558 | extern void safe_run_hooks (Lisp_Object); |
a8fe7202 | 3559 | extern void cmd_error_internal (Lisp_Object, const char *); |
383e0970 | 3560 | extern Lisp_Object command_loop_1 (void); |
3b158d11 | 3561 | extern Lisp_Object read_menu_command (void); |
383e0970 J |
3562 | extern Lisp_Object recursive_edit_1 (void); |
3563 | extern void record_auto_save (void); | |
4752793e | 3564 | extern void force_auto_save_soon (void); |
383e0970 J |
3565 | extern void init_keyboard (void); |
3566 | extern void syms_of_keyboard (void); | |
3567 | extern void keys_of_keyboard (void); | |
3cfe6dfd | 3568 | |
464d5a5e | 3569 | /* Defined in indent.c. */ |
d311d28c | 3570 | extern ptrdiff_t current_column (void); |
383e0970 | 3571 | extern void invalidate_current_column (void); |
578098f3 | 3572 | extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT); |
383e0970 | 3573 | extern void syms_of_indent (void); |
3cfe6dfd | 3574 | |
464d5a5e | 3575 | /* Defined in frame.c. */ |
9fb0c957 | 3576 | extern Lisp_Object Qonly, Qnone; |
880e6158 | 3577 | extern void set_frame_param (struct frame *, Lisp_Object, Lisp_Object); |
383e0970 J |
3578 | extern void store_frame_param (struct frame *, Lisp_Object, Lisp_Object); |
3579 | extern void store_in_alist (Lisp_Object *, Lisp_Object, Lisp_Object); | |
3580 | extern Lisp_Object do_switch_frame (Lisp_Object, int, int, Lisp_Object); | |
3581 | extern Lisp_Object get_frame_param (struct frame *, Lisp_Object); | |
383e0970 | 3582 | extern void frames_discard_buffer (Lisp_Object); |
383e0970 | 3583 | extern void syms_of_frame (void); |
3cfe6dfd | 3584 | |
464d5a5e | 3585 | /* Defined in emacs.c. */ |
99f3388e DN |
3586 | extern char **initial_argv; |
3587 | extern int initial_argc; | |
5e617bc2 | 3588 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS) |
1882aa38 | 3589 | extern bool display_arg; |
89dc303e | 3590 | #endif |
17e0445b | 3591 | extern Lisp_Object decode_env_path (const char *, const char *, bool); |
2c668b9a | 3592 | extern Lisp_Object empty_unibyte_string, empty_multibyte_string; |
e6cba650 | 3593 | extern Lisp_Object Qfile_name_handler_alist; |
4d7e6e51 | 3594 | extern _Noreturn void terminate_due_to_signal (int, int); |
6c07aac2 | 3595 | extern Lisp_Object Qkill_emacs; |
aa15c6bb JB |
3596 | #ifdef WINDOWSNT |
3597 | extern Lisp_Object Vlibrary_cache; | |
3598 | #endif | |
68c45bf0 | 3599 | #if HAVE_SETLOCALE |
383e0970 J |
3600 | void fixup_locale (void); |
3601 | void synchronize_system_messages_locale (void); | |
3602 | void synchronize_system_time_locale (void); | |
68c45bf0 | 3603 | #else |
00382e8b PE |
3604 | INLINE void fixup_locale (void) {} |
3605 | INLINE void synchronize_system_messages_locale (void) {} | |
3606 | INLINE void synchronize_system_time_locale (void) {} | |
68c45bf0 | 3607 | #endif |
1882aa38 | 3608 | extern void shut_down_emacs (int, Lisp_Object); |
ff808935 | 3609 | |
1882aa38 PE |
3610 | /* True means don't do interactive redisplay and don't change tty modes. */ |
3611 | extern bool noninteractive; | |
3612 | ||
3613 | /* True means remove site-lisp directories from load-path. */ | |
3614 | extern bool no_site_lisp; | |
66b7b0fe | 3615 | |
ff808935 DN |
3616 | /* Pipe used to send exit notification to the daemon parent at |
3617 | startup. */ | |
3618 | extern int daemon_pipe[2]; | |
3619 | #define IS_DAEMON (daemon_pipe[1] != 0) | |
3620 | ||
1882aa38 PE |
3621 | /* True if handling a fatal error already. */ |
3622 | extern bool fatal_error_in_progress; | |
3623 | ||
3624 | /* True means don't do use window-system-specific display code. */ | |
3625 | extern bool inhibit_window_system; | |
3626 | /* True means that a filter or a sentinel is running. */ | |
3627 | extern bool running_asynch_code; | |
3cfe6dfd | 3628 | |
6c60eb9f | 3629 | /* Defined in process.c. */ |
89dc303e | 3630 | extern Lisp_Object QCtype, Qlocal; |
383e0970 | 3631 | extern void kill_buffer_processes (Lisp_Object); |
05d28210 PE |
3632 | extern int wait_reading_process_output (intmax_t, int, int, bool, Lisp_Object, |
3633 | struct Lisp_Process *, int); | |
f1dd8073 PE |
3634 | /* Max value for the first argument of wait_reading_process_output. */ |
3635 | #if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5) | |
3636 | /* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3. | |
3637 | The bug merely causes a bogus warning, but the warning is annoying. */ | |
3638 | # define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX) | |
3639 | #else | |
3640 | # define WAIT_READING_MAX INTMAX_MAX | |
3641 | #endif | |
383e0970 J |
3642 | extern void add_keyboard_wait_descriptor (int); |
3643 | extern void delete_keyboard_wait_descriptor (int); | |
4475bec4 | 3644 | #ifdef HAVE_GPM |
383e0970 J |
3645 | extern void add_gpm_wait_descriptor (int); |
3646 | extern void delete_gpm_wait_descriptor (int); | |
4475bec4 | 3647 | #endif |
b82da769 | 3648 | extern void init_process_emacs (void); |
383e0970 J |
3649 | extern void syms_of_process (void); |
3650 | extern void setup_process_coding_systems (Lisp_Object); | |
3cfe6dfd | 3651 | |
4ebbdd67 | 3652 | /* Defined in callproc.c. */ |
6bd8c144 | 3653 | #ifndef DOS_NT |
845ca893 | 3654 | _Noreturn |
6bd8c144 | 3655 | #endif |
2f221583 | 3656 | extern int child_setup (int, int, int, char **, bool, Lisp_Object); |
383e0970 J |
3657 | extern void init_callproc_1 (void); |
3658 | extern void init_callproc (void); | |
3659 | extern void set_initial_environment (void); | |
3660 | extern void syms_of_callproc (void); | |
3cfe6dfd | 3661 | |
e7032e7c | 3662 | /* Defined in doc.c. */ |
99f3388e | 3663 | extern Lisp_Object Qfunction_documentation; |
383e0970 | 3664 | extern Lisp_Object read_doc_string (Lisp_Object); |
a08d4ba7 | 3665 | extern Lisp_Object get_doc_string (Lisp_Object, bool, bool); |
383e0970 | 3666 | extern void syms_of_doc (void); |
a08d4ba7 | 3667 | extern int read_bytecode_char (bool); |
3cfe6dfd | 3668 | |
e7032e7c | 3669 | /* Defined in bytecode.c. */ |
383e0970 | 3670 | extern void syms_of_bytecode (void); |
0ee81a0c | 3671 | extern Lisp_Object exec_byte_code (Lisp_Object, Lisp_Object, Lisp_Object, |
f66c7cf8 | 3672 | Lisp_Object, ptrdiff_t, Lisp_Object *); |
3cfe6dfd | 3673 | |
e7032e7c | 3674 | /* Defined in macros.c. */ |
383e0970 J |
3675 | extern void init_macros (void); |
3676 | extern void syms_of_macros (void); | |
3cfe6dfd | 3677 | |
e7032e7c | 3678 | /* Defined in undo.c. */ |
89dc303e | 3679 | extern Lisp_Object Qapply; |
a387611b | 3680 | extern Lisp_Object Qinhibit_read_only; |
383e0970 | 3681 | extern void truncate_undo_list (struct buffer *); |
d311d28c | 3682 | extern void record_insert (ptrdiff_t, ptrdiff_t); |
37ea8275 | 3683 | extern void record_delete (ptrdiff_t, Lisp_Object, bool); |
383e0970 | 3684 | extern void record_first_change (void); |
d311d28c PE |
3685 | extern void record_change (ptrdiff_t, ptrdiff_t); |
3686 | extern void record_property_change (ptrdiff_t, ptrdiff_t, | |
c8a66ab8 | 3687 | Lisp_Object, Lisp_Object, |
383e0970 J |
3688 | Lisp_Object); |
3689 | extern void syms_of_undo (void); | |
e7032e7c | 3690 | /* Defined in textprop.c. */ |
73bfe891 | 3691 | extern Lisp_Object Qmouse_face; |
c2d8811c | 3692 | extern Lisp_Object Qinsert_in_front_hooks, Qinsert_behind_hooks; |
e6cba650 DN |
3693 | extern Lisp_Object Qminibuffer_prompt; |
3694 | ||
383e0970 | 3695 | extern void report_interval_modification (Lisp_Object, Lisp_Object); |
8537f1cb | 3696 | |
e7032e7c | 3697 | /* Defined in menu.c. */ |
383e0970 | 3698 | extern void syms_of_menu (void); |
febcacdd | 3699 | |
e7032e7c | 3700 | /* Defined in xmenu.c. */ |
383e0970 | 3701 | extern void syms_of_xmenu (void); |
526a2be7 | 3702 | |
e7032e7c | 3703 | /* Defined in termchar.h. */ |
28d7d09f KL |
3704 | struct tty_display_info; |
3705 | ||
e7032e7c | 3706 | /* Defined in termhooks.h. */ |
6ed8eeff | 3707 | struct terminal; |
28d440ab | 3708 | |
e7032e7c | 3709 | /* Defined in sysdep.c. */ |
2412f586 | 3710 | #ifndef HAVE_GET_CURRENT_DIR_NAME |
383e0970 | 3711 | extern char *get_current_dir_name (void); |
2b94e598 | 3712 | #endif |
383e0970 | 3713 | extern void stuff_char (char c); |
322aea6d | 3714 | extern void init_foreground_group (void); |
383e0970 J |
3715 | extern void sys_subshell (void); |
3716 | extern void sys_suspend (void); | |
3717 | extern void discard_tty_input (void); | |
3718 | extern void init_sys_modes (struct tty_display_info *); | |
3719 | extern void reset_sys_modes (struct tty_display_info *); | |
3720 | extern void init_all_sys_modes (void); | |
3721 | extern void reset_all_sys_modes (void); | |
383e0970 J |
3722 | extern void child_setup_tty (int); |
3723 | extern void setup_pty (int); | |
3724 | extern int set_window_size (int, int, int); | |
ede49d71 | 3725 | extern EMACS_INT get_random (void); |
0e23ef9d PE |
3726 | extern void seed_random (void *, ptrdiff_t); |
3727 | extern void init_random (void); | |
cf29dd84 | 3728 | extern void emacs_backtrace (int); |
1088b922 | 3729 | extern _Noreturn void emacs_abort (void) NO_INLINE; |
383e0970 | 3730 | extern int emacs_open (const char *, int, int); |
c7ddc792 | 3731 | extern int emacs_pipe (int[2]); |
383e0970 | 3732 | extern int emacs_close (int); |
223752d7 PE |
3733 | extern ptrdiff_t emacs_read (int, void *, ptrdiff_t); |
3734 | extern ptrdiff_t emacs_write (int, void const *, ptrdiff_t); | |
3735 | extern ptrdiff_t emacs_write_sig (int, void const *, ptrdiff_t); | |
4ebbdd67 | 3736 | extern void emacs_perror (char const *); |
526a2be7 | 3737 | |
383e0970 J |
3738 | extern void unlock_all_files (void); |
3739 | extern void lock_file (Lisp_Object); | |
3740 | extern void unlock_file (Lisp_Object); | |
3741 | extern void unlock_buffer (struct buffer *); | |
3742 | extern void syms_of_filelock (void); | |
15b0ced5 | 3743 | |
e7032e7c | 3744 | /* Defined in sound.c. */ |
383e0970 | 3745 | extern void syms_of_sound (void); |
46abf440 | 3746 | |
e7032e7c | 3747 | /* Defined in category.c. */ |
383e0970 J |
3748 | extern void init_category_once (void); |
3749 | extern Lisp_Object char_category_set (int); | |
3750 | extern void syms_of_category (void); | |
46abf440 | 3751 | |
e7032e7c | 3752 | /* Defined in ccl.c. */ |
383e0970 | 3753 | extern void syms_of_ccl (void); |
46abf440 | 3754 | |
e7032e7c | 3755 | /* Defined in dired.c. */ |
383e0970 J |
3756 | extern void syms_of_dired (void); |
3757 | extern Lisp_Object directory_files_internal (Lisp_Object, Lisp_Object, | |
3758 | Lisp_Object, Lisp_Object, | |
86ec63ba | 3759 | bool, Lisp_Object); |
46abf440 | 3760 | |
e7032e7c | 3761 | /* Defined in term.c. */ |
e6cba650 | 3762 | extern int *char_ins_del_vector; |
383e0970 | 3763 | extern void syms_of_term (void); |
845ca893 PE |
3764 | extern _Noreturn void fatal (const char *msgid, ...) |
3765 | ATTRIBUTE_FORMAT_PRINTF (1, 2); | |
46abf440 | 3766 | |
e7032e7c | 3767 | /* Defined in terminal.c. */ |
383e0970 | 3768 | extern void syms_of_terminal (void); |
ed8dad6b | 3769 | |
e7032e7c | 3770 | /* Defined in font.c. */ |
383e0970 J |
3771 | extern void syms_of_font (void); |
3772 | extern void init_font (void); | |
b86cfd28 | 3773 | |
4f48f1ab | 3774 | #ifdef HAVE_WINDOW_SYSTEM |
e7032e7c | 3775 | /* Defined in fontset.c. */ |
383e0970 | 3776 | extern void syms_of_fontset (void); |
4f48f1ab | 3777 | |
e7032e7c | 3778 | /* Defined in xfns.c, w32fns.c, or macfns.c. */ |
99f3388e | 3779 | extern Lisp_Object Qfont_param; |
46abf440 AS |
3780 | #endif |
3781 | ||
c9628c79 MA |
3782 | /* Defined in gfilenotify.c */ |
3783 | #ifdef HAVE_GFILENOTIFY | |
90db8702 | 3784 | extern void globals_of_gfilenotify (void); |
c9628c79 | 3785 | extern void syms_of_gfilenotify (void); |
477f1e50 EZ |
3786 | #endif |
3787 | ||
81606b10 RS |
3788 | /* Defined in inotify.c */ |
3789 | #ifdef HAVE_INOTIFY | |
3790 | extern void syms_of_inotify (void); | |
3791 | #endif | |
3792 | ||
c9628c79 MA |
3793 | #ifdef HAVE_W32NOTIFY |
3794 | /* Defined on w32notify.c. */ | |
3795 | extern void syms_of_w32notify (void); | |
3796 | #endif | |
3797 | ||
e7032e7c | 3798 | /* Defined in xfaces.c. */ |
73bfe891 PE |
3799 | extern Lisp_Object Qdefault, Qfringe; |
3800 | extern Lisp_Object Qscroll_bar, Qcursor; | |
955cbe7b | 3801 | extern Lisp_Object Qmode_line_inactive; |
e6cba650 | 3802 | extern Lisp_Object Qface; |
89dc303e | 3803 | extern Lisp_Object Qnormal; |
0e9c8657 JB |
3804 | extern Lisp_Object QCfamily, QCweight, QCslant; |
3805 | extern Lisp_Object QCheight, QCname, QCwidth, QCforeground, QCbackground; | |
a411ac43 PE |
3806 | extern Lisp_Object Qextra_light, Qlight, Qsemi_light, Qsemi_bold; |
3807 | extern Lisp_Object Qbold, Qextra_bold, Qultra_bold; | |
3808 | extern Lisp_Object Qoblique, Qitalic; | |
99f3388e | 3809 | extern Lisp_Object Vface_alternative_font_family_alist; |
99f3388e | 3810 | extern Lisp_Object Vface_alternative_font_registry_alist; |
383e0970 | 3811 | extern void syms_of_xfaces (void); |
46abf440 AS |
3812 | |
3813 | #ifdef HAVE_X_WINDOWS | |
e7032e7c | 3814 | /* Defined in xfns.c. */ |
383e0970 | 3815 | extern void syms_of_xfns (void); |
46abf440 | 3816 | |
e7032e7c | 3817 | /* Defined in xsmfns.c. */ |
383e0970 | 3818 | extern void syms_of_xsmfns (void); |
e02207d4 | 3819 | |
e7032e7c | 3820 | /* Defined in xselect.c. */ |
383e0970 | 3821 | extern void syms_of_xselect (void); |
46abf440 | 3822 | |
e7032e7c | 3823 | /* Defined in xterm.c. */ |
383e0970 | 3824 | extern void syms_of_xterm (void); |
4f48f1ab | 3825 | #endif /* HAVE_X_WINDOWS */ |
4baa6f88 | 3826 | |
7af07b96 | 3827 | #ifdef HAVE_WINDOW_SYSTEM |
e7032e7c | 3828 | /* Defined in xterm.c, nsterm.m, w32term.c. */ |
7af07b96 AS |
3829 | extern char *x_get_keysym_name (int); |
3830 | #endif /* HAVE_WINDOW_SYSTEM */ | |
3831 | ||
381408e2 | 3832 | #ifdef HAVE_LIBXML2 |
e7032e7c | 3833 | /* Defined in xml.c. */ |
381408e2 | 3834 | extern void syms_of_xml (void); |
9078ead6 | 3835 | extern void xml_cleanup_parser (void); |
381408e2 LMI |
3836 | #endif |
3837 | ||
313546eb LMI |
3838 | #ifdef HAVE_ZLIB |
3839 | /* Defined in decompress.c. */ | |
3840 | extern void syms_of_decompress (void); | |
3841 | #endif | |
3842 | ||
b86cfd28 | 3843 | #ifdef HAVE_DBUS |
e7032e7c | 3844 | /* Defined in dbusbind.c. */ |
383e0970 | 3845 | void syms_of_dbusbind (void); |
b86cfd28 | 3846 | #endif |
36e053eb | 3847 | |
ad942b63 SM |
3848 | |
3849 | /* Defined in profiler.c. */ | |
6521894d | 3850 | extern bool profiler_memory_running; |
c2d7786e | 3851 | extern void malloc_probe (size_t); |
c2d7786e TM |
3852 | extern void syms_of_profiler (void); |
3853 | ||
ad942b63 | 3854 | |
36e053eb | 3855 | #ifdef DOS_NT |
e7032e7c | 3856 | /* Defined in msdos.c, w32.c. */ |
36e053eb DN |
3857 | extern char *emacs_root_dir (void); |
3858 | #endif /* DOS_NT */ | |
3cfe6dfd | 3859 | |
9fa1de30 PE |
3860 | /* True means ^G can quit instantly. */ |
3861 | extern bool immediate_quit; | |
3cfe6dfd | 3862 | |
74fde0f4 PE |
3863 | extern void *xmalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
3864 | extern void *xzalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); | |
3865 | extern void *xrealloc (void *, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); | |
261cb4bb | 3866 | extern void xfree (void *); |
f11db2f4 | 3867 | extern void *xmalloc_uncollectable (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
0a38955b | 3868 | extern void *xmalloc_unsafe (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
74fde0f4 PE |
3869 | extern void *xnmalloc (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2)); |
3870 | extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t) | |
3871 | ATTRIBUTE_ALLOC_SIZE ((2,3)); | |
0065d054 | 3872 | extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t); |
143439dd RT |
3873 | extern void *xmalloc_atomic (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
3874 | extern void *xzalloc_atomic (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); | |
3875 | extern void *xmalloc_atomic_unsafe (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); | |
3876 | extern void *xnmalloc_atomic (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2)); | |
074b6efe | 3877 | |
74fde0f4 PE |
3878 | extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; |
3879 | extern char *xlispstrdup (Lisp_Object) ATTRIBUTE_MALLOC; | |
8268febf | 3880 | extern void dupstring (char **, char const *); |
5745a7df | 3881 | extern void xputenv (const char *); |
3cfe6dfd | 3882 | |
a8fe7202 | 3883 | extern char *egetenv (const char *); |
e98227af | 3884 | |
5b71542d DA |
3885 | /* Copy Lisp string to temporary (allocated on stack) C string. */ |
3886 | ||
3887 | #define xlispstrdupa(string) \ | |
3888 | memcpy (alloca (SBYTES (string) + 1), \ | |
3889 | SSDATA (string), SBYTES (string) + 1) | |
3890 | ||
5d6be39f | 3891 | /* Set up the name of the machine we're running on. */ |
383e0970 | 3892 | extern void init_system_name (void); |
881a5a80 | 3893 | |
d7a0a7c9 PE |
3894 | /* Return the absolute value of X. X should be a signed integer |
3895 | expression without side effects, and X's absolute value should not | |
3896 | exceed the maximum for its promoted type. This is called 'eabs' | |
3897 | because 'abs' is reserved by the C standard. */ | |
555b10b0 | 3898 | #define eabs(x) ((x) < 0 ? -(x) : (x)) |
096e8667 | 3899 | |
53ede3f4 GM |
3900 | /* Return a fixnum or float, depending on whether VAL fits in a Lisp |
3901 | fixnum. */ | |
3902 | ||
3903 | #define make_fixnum_or_float(val) \ | |
cbeff735 | 3904 | (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val)) |
6b61353c | 3905 | |
79518a8d KS |
3906 | /* SAFE_ALLOCA normally allocates memory on the stack, but if size is |
3907 | larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */ | |
3908 | ||
e7032e7c | 3909 | enum MAX_ALLOCA { MAX_ALLOCA = 16 * 1024 }; |
79518a8d | 3910 | |
e96be6dd | 3911 | #define USE_SAFE_ALLOCA ((void) 0) |
79518a8d | 3912 | |
a9e6bacc KS |
3913 | /* SAFE_ALLOCA allocates a simple buffer. */ |
3914 | ||
98c6f1e3 PE |
3915 | #define SAFE_ALLOCA(size) ((size) < MAX_ALLOCA \ |
3916 | ? alloca (size) \ | |
e96be6dd | 3917 | : xmalloc (size)) |
79518a8d | 3918 | |
0065d054 PE |
3919 | /* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER * |
3920 | NITEMS items, each of the same type as *BUF. MULTIPLIER must | |
3921 | positive. The code is tuned for MULTIPLIER being a constant. */ | |
3922 | ||
468afbac DA |
3923 | #define SAFE_NALLOCA(buf, multiplier, nitems) \ |
3924 | do { \ | |
3925 | if ((nitems) <= MAX_ALLOCA / sizeof *(buf) / (multiplier)) \ | |
3926 | (buf) = alloca (sizeof *(buf) * (multiplier) * (nitems)); \ | |
3927 | else \ | |
e96be6dd BT |
3928 | (buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \ |
3929 | } while (0) | |
0065d054 | 3930 | |
a9e6bacc KS |
3931 | /* SAFE_FREE frees xmalloced memory and enables GC as needed. */ |
3932 | ||
e96be6dd | 3933 | #define SAFE_FREE() ((void) 0) |
79518a8d | 3934 | |
5f5d6c62 KS |
3935 | /* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */ |
3936 | ||
663e2b3f DA |
3937 | #define SAFE_ALLOCA_LISP(buf, nelt) \ |
3938 | do { \ | |
3939 | if ((nelt) < MAX_ALLOCA / word_size) \ | |
96c06863 | 3940 | (buf) = alloca ((nelt) * word_size); \ |
663e2b3f | 3941 | else if ((nelt) < min (PTRDIFF_MAX, SIZE_MAX) / word_size) \ |
e96be6dd | 3942 | buf = xmalloc ((nelt) * word_size); \ |
663e2b3f DA |
3943 | else \ |
3944 | memory_full (SIZE_MAX); \ | |
96c06863 | 3945 | } while (false) |
5f5d6c62 | 3946 | |
105324ce SM |
3947 | /* Loop over all tails of a list, checking for cycles. |
3948 | FIXME: Make tortoise and n internal declarations. | |
3949 | FIXME: Unroll the loop body so we don't need `n'. */ | |
3950 | #define FOR_EACH_TAIL(hare, list, tortoise, n) \ | |
96c06863 | 3951 | for ((tortoise) = (hare) = (list), (n) = true; \ |
105324ce | 3952 | CONSP (hare); \ |
96c06863 PE |
3953 | (hare = XCDR (hare), (n) = !(n), \ |
3954 | ((n) \ | |
3955 | ? (EQ (hare, tortoise) \ | |
3956 | ? xsignal1 (Qcircular_list, list) \ | |
3957 | : (void) 0) \ | |
105324ce SM |
3958 | /* Move tortoise before the next iteration, in case */ \ |
3959 | /* the next iteration does an Fsetcdr. */ \ | |
96c06863 | 3960 | : (void) ((tortoise) = XCDR (tortoise))))) |
105324ce | 3961 | |
d5a1acfa DA |
3962 | /* Do a `for' loop over alist values. */ |
3963 | ||
3964 | #define FOR_EACH_ALIST_VALUE(head_var, list_var, value_var) \ | |
96c06863 PE |
3965 | for ((list_var) = (head_var); \ |
3966 | (CONSP (list_var) && ((value_var) = XCDR (XCAR (list_var)), true)); \ | |
3967 | (list_var) = XCDR (list_var)) | |
79518a8d | 3968 | |
dac616ff DA |
3969 | /* Check whether it's time for GC, and run it if so. */ |
3970 | ||
00382e8b | 3971 | INLINE void |
dac616ff DA |
3972 | maybe_gc (void) |
3973 | { | |
b782773b | 3974 | return; |
dac616ff DA |
3975 | } |
3976 | ||
7ee76ab9 RT |
3977 | extern Lisp_Object Ffboundp (Lisp_Object); |
3978 | ||
00382e8b | 3979 | INLINE bool |
e1f29348 BR |
3980 | functionp (Lisp_Object object) |
3981 | { | |
3982 | if (SYMBOLP (object) && !NILP (Ffboundp (object))) | |
3983 | { | |
3984 | object = Findirect_function (object, Qt); | |
3985 | ||
3986 | if (CONSP (object) && EQ (XCAR (object), Qautoload)) | |
3987 | { | |
3988 | /* Autoloaded symbols are functions, except if they load | |
3989 | macros or keymaps. */ | |
3990 | int i; | |
3991 | for (i = 0; i < 4 && CONSP (object); i++) | |
3992 | object = XCDR (object); | |
3993 | ||
3994 | return ! (CONSP (object) && !NILP (XCAR (object))); | |
3995 | } | |
3996 | } | |
3997 | ||
62947569 BT |
3998 | if (scm_is_true (scm_procedure_p (object))) |
3999 | return 1; | |
e1f29348 | 4000 | else if (COMPILEDP (object)) |
96c06863 | 4001 | return true; |
e1f29348 BR |
4002 | else if (CONSP (object)) |
4003 | { | |
4004 | Lisp_Object car = XCAR (object); | |
4005 | return EQ (car, Qlambda) || EQ (car, Qclosure); | |
4006 | } | |
e1f29348 BR |
4007 | } |
4008 | ||
d1c3da7b BT |
4009 | INLINE sym_t |
4010 | XSYMBOL (Lisp_Object a) | |
4011 | { | |
4012 | return scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-desc"), | |
4013 | a); | |
4014 | } | |
4015 | ||
f162bcc3 | 4016 | INLINE_HEADER_END |
6b61353c | 4017 | #endif /* EMACS_LISP_H */ |