| 1 | /* Fundamental definitions for GNU Emacs Lisp interpreter. |
| 2 | |
| 3 | Copyright (C) 1985-1987, 1993-1995, 1997-2014 Free Software Foundation, |
| 4 | Inc. |
| 5 | |
| 6 | This file is part of GNU Emacs. |
| 7 | |
| 8 | GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation, either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 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 |
| 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #ifndef EMACS_LISP_H |
| 22 | #define EMACS_LISP_H |
| 23 | |
| 24 | #include <setjmp.h> |
| 25 | #include <stdalign.h> |
| 26 | #include <stdarg.h> |
| 27 | #include <stddef.h> |
| 28 | #include <float.h> |
| 29 | #include <inttypes.h> |
| 30 | #include <limits.h> |
| 31 | #include <intprops.h> |
| 32 | #include <verify.h> |
| 33 | #include <libguile.h> |
| 34 | |
| 35 | INLINE_HEADER_BEGIN |
| 36 | |
| 37 | /* Define a TYPE constant ID as an externally visible name. Use like this: |
| 38 | |
| 39 | #define ID_val (some integer preprocessor expression) |
| 40 | #if ENUMABLE (ID_val) |
| 41 | DEFINE_GDB_SYMBOL_ENUM (ID) |
| 42 | #else |
| 43 | DEFINE_GDB_SYMBOL_BEGIN (TYPE, ID) |
| 44 | # define ID ID_val |
| 45 | DEFINE_GDB_SYMBOL_END (ID) |
| 46 | #endif |
| 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 |
| 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 | |
| 62 | #define DEFINE_GDB_SYMBOL_ENUM(id) enum { id = id##_val }; |
| 63 | #if defined MAIN_PROGRAM |
| 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 | |
| 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 | |
| 77 | /* Number of elements in an array. */ |
| 78 | #define ARRAYELTS(arr) (sizeof (arr) / sizeof (arr)[0]) |
| 79 | |
| 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__ \ |
| 91 | || defined DARWIN_OS || defined __sun || defined __MINGW32__)) |
| 92 | # define NONPOINTER_BITS 0 |
| 93 | #else |
| 94 | # define NONPOINTER_BITS GCTYPEBITS |
| 95 | #endif |
| 96 | |
| 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 */ |
| 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" |
| 116 | #endif |
| 117 | |
| 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 | |
| 125 | /* An unsigned integer type representing a fixed-length bit sequence, |
| 126 | suitable for bool vector words, GC mark bits, etc. Normally it is size_t |
| 127 | for speed, but it is unsigned char on weird platforms. */ |
| 128 | #if BOOL_VECTOR_BITS_PER_CHAR == CHAR_BIT |
| 129 | typedef size_t bits_word; |
| 130 | # define BITS_WORD_MAX SIZE_MAX |
| 131 | enum { BITS_PER_BITS_WORD = CHAR_BIT * sizeof (bits_word) }; |
| 132 | #else |
| 133 | typedef unsigned char bits_word; |
| 134 | # define BITS_WORD_MAX ((1u << BOOL_VECTOR_BITS_PER_CHAR) - 1) |
| 135 | enum { BITS_PER_BITS_WORD = BOOL_VECTOR_BITS_PER_CHAR }; |
| 136 | #endif |
| 137 | verify (BITS_WORD_MAX >> (BITS_PER_BITS_WORD - 1) == 1); |
| 138 | |
| 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), |
| 144 | BITS_PER_LONG = CHAR_BIT * sizeof (long int), |
| 145 | BITS_PER_EMACS_INT = CHAR_BIT * sizeof (EMACS_INT) |
| 146 | }; |
| 147 | |
| 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 | |
| 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 | |
| 180 | /* Extra internal type checking? */ |
| 181 | |
| 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 | |
| 205 | #ifndef ENABLE_CHECKING |
| 206 | # define eassert(cond) ((void) (false && (cond))) /* Check COND compiles. */ |
| 207 | # define eassume(cond) assume (cond) |
| 208 | #else /* ENABLE_CHECKING */ |
| 209 | |
| 210 | extern _Noreturn void die (const char *, const char *, int); |
| 211 | |
| 212 | extern bool suppress_checking EXTERNALLY_VISIBLE; |
| 213 | |
| 214 | # define eassert(cond) \ |
| 215 | (suppress_checking || (cond) \ |
| 216 | ? (void) 0 \ |
| 217 | : die (# cond, __FILE__, __LINE__)) |
| 218 | # define eassume(cond) \ |
| 219 | (suppress_checking \ |
| 220 | ? assume (cond) \ |
| 221 | : (cond) \ |
| 222 | ? (void) 0 \ |
| 223 | : die (# cond, __FILE__, __LINE__)) |
| 224 | #endif /* ENABLE_CHECKING */ |
| 225 | |
| 226 | \f |
| 227 | enum Lisp_Bits |
| 228 | { |
| 229 | /* 2**GCTYPEBITS. This must be a macro that expands to a literal |
| 230 | integer constant, for MSVC. */ |
| 231 | #define GCALIGNMENT 8 |
| 232 | |
| 233 | /* Number of bits in a Lisp fixnum value, not counting the tag. */ |
| 234 | FIXNUM_BITS = SCM_I_FIXNUM_BIT |
| 235 | }; |
| 236 | |
| 237 | #if GCALIGNMENT != 1 << GCTYPEBITS |
| 238 | # error "GCALIGNMENT and GCTYPEBITS are inconsistent" |
| 239 | #endif |
| 240 | |
| 241 | DEFINE_GDB_SYMBOL_BEGIN (bool, USE_LSB_TAG) |
| 242 | #define USE_LSB_TAG 1 |
| 243 | DEFINE_GDB_SYMBOL_END (USE_LSB_TAG) |
| 244 | |
| 245 | #ifndef alignas |
| 246 | # define alignas(alignment) /* empty */ |
| 247 | # if USE_LSB_TAG |
| 248 | # error "USE_LSB_TAG requires alignas" |
| 249 | # endif |
| 250 | #endif |
| 251 | |
| 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 |
| 259 | the operation's implementation. That way, OP can be implemented |
| 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 | |
| 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)) |
| 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) |
| 292 | #define lisp_h_CHECK_TYPE(ok, predicate, x) \ |
| 293 | ((ok) ? (void) 0 : (void) wrong_type_argument (predicate, x)) |
| 294 | #define lisp_h_CONSP(x) (x && scm_is_pair (x)) |
| 295 | #define lisp_h_EQ(x, y) (scm_is_eq (x, y)) |
| 296 | #define lisp_h_FLOATP(x) (x && SCM_INEXACTP (x)) |
| 297 | #define lisp_h_INTEGERP(x) (SCM_I_INUMP (x)) |
| 298 | #define lisp_h_MARKERP(x) (MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Marker) |
| 299 | #define lisp_h_MISCP(x) (SMOB_TYPEP (x, lisp_misc_tag)) |
| 300 | #define lisp_h_NILP(x) (scm_is_lisp_false (x)) |
| 301 | #define lisp_h_SET_SYMBOL_VAL(sym, v) \ |
| 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))) |
| 305 | #define lisp_h_SYMBOL_VAL(sym) \ |
| 306 | (eassert (SYMBOL_REDIRECT (sym) == SYMBOL_PLAINVAL), \ |
| 307 | scm_c_vector_ref (sym, 4)) |
| 308 | #define lisp_h_SYMBOLP(x) \ |
| 309 | (x && (scm_is_symbol (x) || EQ (x, Qnil) || EQ (x, Qt))) |
| 310 | #define lisp_h_VECTORLIKEP(x) (SMOB_TYPEP (x, lisp_vectorlike_tag)) |
| 311 | #define lisp_h_XCAR(c) (scm_car (c)) |
| 312 | #define lisp_h_XCDR(c) (scm_cdr (c)) |
| 313 | #define lisp_h_XHASH(a) (SCM_UNPACK (a)) |
| 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) \ |
| 320 | INLINE type (name) argdecls { return lisp_h_##name args; } |
| 321 | |
| 322 | /* like LISP_MACRO_DEFUN, except NAME returns void. */ |
| 323 | #define LISP_MACRO_DEFUN_VOID(name, argdecls, args) \ |
| 324 | INLINE void (name) argdecls { lisp_h_##name args; } |
| 325 | |
| 326 | |
| 327 | /* Define the fundamental Lisp data structures. */ |
| 328 | |
| 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. */ |
| 332 | |
| 333 | #define INTMASK SCM_MOST_POSITIVE_FIXNUM |
| 334 | #define case_Lisp_Int case Lisp_Int |
| 335 | |
| 336 | /* Idea stolen from GDB. Pedantic GCC complains about enum bitfields, |
| 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__)) |
| 341 | #define ENUM_BF(TYPE) unsigned int |
| 342 | #else |
| 343 | #define ENUM_BF(TYPE) enum TYPE |
| 344 | #endif |
| 345 | |
| 346 | scm_t_bits lisp_misc_tag; |
| 347 | scm_t_bits lisp_string_tag; |
| 348 | scm_t_bits lisp_vectorlike_tag; |
| 349 | |
| 350 | enum Lisp_Type |
| 351 | { |
| 352 | Lisp_Other, |
| 353 | |
| 354 | /* Integer. XINT (obj) is the integer value. */ |
| 355 | Lisp_Int, |
| 356 | |
| 357 | /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */ |
| 358 | Lisp_Symbol, |
| 359 | |
| 360 | /* Miscellaneous. XMISC (object) points to a union Lisp_Misc, |
| 361 | whose first member indicates the subtype. */ |
| 362 | Lisp_Misc, |
| 363 | |
| 364 | /* String. XSTRING (object) points to a struct Lisp_String. |
| 365 | The length of the string, and its contents, are stored therein. */ |
| 366 | Lisp_String, |
| 367 | |
| 368 | /* Vector of Lisp objects, or something resembling it. |
| 369 | XVECTOR (object) points to a struct Lisp_Vector, which contains |
| 370 | the size and contents. The size field also contains the type |
| 371 | information, if it's not a real vector object. */ |
| 372 | Lisp_Vectorlike, |
| 373 | |
| 374 | /* Cons. XCONS (object) points to a struct Lisp_Cons. */ |
| 375 | Lisp_Cons, |
| 376 | |
| 377 | Lisp_Float |
| 378 | }; |
| 379 | |
| 380 | /* This is the set of data types that share a common structure. |
| 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. */ |
| 385 | enum Lisp_Misc_Type |
| 386 | { |
| 387 | Lisp_Misc_Free = 0x5eab, |
| 388 | Lisp_Misc_Marker, |
| 389 | Lisp_Misc_Overlay, |
| 390 | Lisp_Misc_Save_Value, |
| 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 |
| 396 | }; |
| 397 | |
| 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. */ |
| 407 | Lisp_Fwd_Kboard_Obj /* Fwd to a Lisp_Object field of kboards. */ |
| 408 | }; |
| 409 | |
| 410 | typedef SCM Lisp_Object; |
| 411 | |
| 412 | #define LISP_INITIALLY_ZERO SCM_INUM0 |
| 413 | |
| 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 | |
| 419 | /* In the size word of a struct Lisp_Vector, this bit means it's really |
| 420 | some other vector-like object. */ |
| 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 |
| 425 | DEFINE_GDB_SYMBOL_BEGIN (ptrdiff_t, PSEUDOVECTOR_FLAG) |
| 426 | # define PSEUDOVECTOR_FLAG PSEUDOVECTOR_FLAG_val |
| 427 | DEFINE_GDB_SYMBOL_END (PSEUDOVECTOR_FLAG) |
| 428 | #endif |
| 429 | |
| 430 | /* In a pseudovector, the size field actually contains a word with one |
| 431 | PSEUDOVECTOR_FLAG bit set, and one of the following values extracted |
| 432 | with PVEC_TYPE_MASK to indicate the actual type. */ |
| 433 | enum pvec_type |
| 434 | { |
| 435 | PVEC_NORMAL_VECTOR, |
| 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, |
| 445 | PVEC_OTHER, |
| 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. */ |
| 451 | }; |
| 452 | |
| 453 | enum More_Lisp_Bits |
| 454 | { |
| 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. */ |
| 460 | PSEUDOVECTOR_SIZE_BITS = 12, |
| 461 | PSEUDOVECTOR_SIZE_MASK = (1 << PSEUDOVECTOR_SIZE_BITS) - 1, |
| 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, |
| 466 | PSEUDOVECTOR_REST_MASK = (((1 << PSEUDOVECTOR_REST_BITS) - 1) |
| 467 | << PSEUDOVECTOR_SIZE_BITS), |
| 468 | |
| 469 | /* Used to extract pseudovector subtype information. */ |
| 470 | PSEUDOVECTOR_AREA_BITS = PSEUDOVECTOR_SIZE_BITS + PSEUDOVECTOR_REST_BITS, |
| 471 | PVEC_TYPE_MASK = 0x3f << PSEUDOVECTOR_AREA_BITS |
| 472 | }; |
| 473 | \f |
| 474 | /* These functions extract various sorts of values from a Lisp_Object. |
| 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. */ |
| 478 | |
| 479 | /* Largest and smallest representable fixnum values. These are the C |
| 480 | values. They are macros for use in static initializers. */ |
| 481 | #define MOST_POSITIVE_FIXNUM SCM_MOST_POSITIVE_FIXNUM |
| 482 | #define MOST_NEGATIVE_FIXNUM SCM_MOST_NEGATIVE_FIXNUM |
| 483 | |
| 484 | /* Make a Lisp integer representing the value of the low order |
| 485 | bits of N. */ |
| 486 | INLINE Lisp_Object |
| 487 | make_number (EMACS_INT n) |
| 488 | { |
| 489 | return SCM_I_MAKINUM (n); |
| 490 | } |
| 491 | |
| 492 | /* Extract A's value as a signed integer. */ |
| 493 | INLINE EMACS_INT |
| 494 | XINT (Lisp_Object a) |
| 495 | { |
| 496 | return SCM_I_INUM (a); |
| 497 | } |
| 498 | |
| 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. */ |
| 502 | INLINE EMACS_INT |
| 503 | XFASTINT (Lisp_Object a) |
| 504 | { |
| 505 | EMACS_INT n = XINT (a); |
| 506 | eassert (0 <= n); |
| 507 | return n; |
| 508 | } |
| 509 | |
| 510 | /* Extract A's value as an unsigned integer. */ |
| 511 | INLINE EMACS_UINT |
| 512 | XUINT (Lisp_Object a) |
| 513 | { |
| 514 | return SCM_I_INUM (a); |
| 515 | } |
| 516 | |
| 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)) |
| 521 | |
| 522 | /* Like make_number (N), but may be faster. N must be in nonnegative range. */ |
| 523 | INLINE Lisp_Object |
| 524 | make_natnum (EMACS_INT n) |
| 525 | { |
| 526 | eassert (0 <= n && n <= MOST_POSITIVE_FIXNUM); |
| 527 | return make_number (n); |
| 528 | } |
| 529 | |
| 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)) |
| 532 | |
| 533 | /* Value is true if I doesn't fit into a Lisp fixnum. It is |
| 534 | written this way so that it also works if I is of unsigned |
| 535 | type or if I is a NaN. */ |
| 536 | |
| 537 | #define FIXNUM_OVERFLOW_P(i) \ |
| 538 | (! ((0 <= (i) || MOST_NEGATIVE_FIXNUM <= (i)) && (i) <= MOST_POSITIVE_FIXNUM)) |
| 539 | |
| 540 | INLINE ptrdiff_t |
| 541 | clip_to_bounds (ptrdiff_t lower, EMACS_INT num, ptrdiff_t upper) |
| 542 | { |
| 543 | return num < lower ? lower : num <= upper ? num : upper; |
| 544 | } |
| 545 | \f |
| 546 | /* Forward declarations. */ |
| 547 | |
| 548 | /* Defined in this file. */ |
| 549 | union Lisp_Fwd; |
| 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, |
| 567 | Lisp_Object); |
| 568 | INLINE bool STRINGP (Lisp_Object); |
| 569 | INLINE bool SUB_CHAR_TABLE_P (Lisp_Object); |
| 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); |
| 574 | |
| 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; |
| 583 | extern Lisp_Object Qnumberp, Qstringp, Qsymbolp, Qt, Qvectorp; |
| 584 | extern Lisp_Object Qbool_vector_p; |
| 585 | extern Lisp_Object Qvector_or_char_table_p, Qwholenump; |
| 586 | extern Lisp_Object Qwindow; |
| 587 | extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object); |
| 588 | |
| 589 | /* Defined in emacs.c. */ |
| 590 | extern bool might_dump; |
| 591 | /* True means Emacs has already been initialized. |
| 592 | Used during startup to detect startup of dumped Emacs. */ |
| 593 | extern bool initialized; |
| 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; |
| 609 | \f |
| 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 |
| 629 | return Lisp_Other; |
| 630 | } |
| 631 | |
| 632 | /* Extract a value or address from a Lisp_Object. */ |
| 633 | |
| 634 | INLINE struct Lisp_Vector * |
| 635 | XVECTOR (Lisp_Object a) |
| 636 | { |
| 637 | eassert (VECTORLIKEP (a)); |
| 638 | return SMOB_PTR (a); |
| 639 | } |
| 640 | |
| 641 | INLINE struct Lisp_String * |
| 642 | XSTRING (Lisp_Object a) |
| 643 | { |
| 644 | eassert (STRINGP (a)); |
| 645 | return SMOB_PTR (a); |
| 646 | } |
| 647 | |
| 648 | extern void initialize_symbol (Lisp_Object, Lisp_Object); |
| 649 | INLINE Lisp_Object build_string (const char *); |
| 650 | extern Lisp_Object symbol_module; |
| 651 | extern Lisp_Object function_module; |
| 652 | extern Lisp_Object plist_module; |
| 653 | extern Lisp_Object Qt, Qnil, Qt_, Qnil_; |
| 654 | |
| 655 | typedef Lisp_Object sym_t; |
| 656 | |
| 657 | INLINE sym_t XSYMBOL (Lisp_Object a); |
| 658 | |
| 659 | /* Pseudovector types. */ |
| 660 | |
| 661 | INLINE struct Lisp_Process * |
| 662 | XPROCESS (Lisp_Object a) |
| 663 | { |
| 664 | eassert (PROCESSP (a)); |
| 665 | return SMOB_PTR (a); |
| 666 | } |
| 667 | |
| 668 | INLINE struct window * |
| 669 | XWINDOW (Lisp_Object a) |
| 670 | { |
| 671 | eassert (WINDOWP (a)); |
| 672 | return SMOB_PTR (a); |
| 673 | } |
| 674 | |
| 675 | INLINE struct terminal * |
| 676 | XTERMINAL (Lisp_Object a) |
| 677 | { |
| 678 | return SMOB_PTR (a); |
| 679 | } |
| 680 | |
| 681 | INLINE struct buffer * |
| 682 | XBUFFER (Lisp_Object a) |
| 683 | { |
| 684 | eassert (BUFFERP (a)); |
| 685 | return SMOB_PTR (a); |
| 686 | } |
| 687 | |
| 688 | INLINE struct Lisp_Char_Table * |
| 689 | XCHAR_TABLE (Lisp_Object a) |
| 690 | { |
| 691 | eassert (CHAR_TABLE_P (a)); |
| 692 | return SMOB_PTR (a); |
| 693 | } |
| 694 | |
| 695 | INLINE struct Lisp_Sub_Char_Table * |
| 696 | XSUB_CHAR_TABLE (Lisp_Object a) |
| 697 | { |
| 698 | eassert (SUB_CHAR_TABLE_P (a)); |
| 699 | return SMOB_PTR (a); |
| 700 | } |
| 701 | |
| 702 | INLINE struct Lisp_Bool_Vector * |
| 703 | XBOOL_VECTOR (Lisp_Object a) |
| 704 | { |
| 705 | eassert (BOOL_VECTOR_P (a)); |
| 706 | return SMOB_PTR (a); |
| 707 | } |
| 708 | |
| 709 | INLINE Lisp_Object |
| 710 | make_lisp_proc (struct Lisp_Process *p) |
| 711 | { |
| 712 | return scm_new_smob (lisp_vectorlike_tag, (scm_t_bits) p); |
| 713 | } |
| 714 | |
| 715 | #define XSETINT(a, b) ((a) = make_number (b)) |
| 716 | #define XSETFASTINT(a, b) ((a) = make_natnum (b)) |
| 717 | #define XSETVECTOR(a, b) ((a) = (b)->header.self) |
| 718 | #define XSETSTRING(a, b) ((a) = (b)->self) |
| 719 | #define XSETSYMBOL(a, b) ((a) = scm_c_vector_ref (b, 0)) |
| 720 | #define XSETMISC(a, b) (a) = ((union Lisp_Misc *) (b))->u_any.self |
| 721 | |
| 722 | /* Pseudovector types. */ |
| 723 | |
| 724 | #define XSETPVECTYPE(v, code) \ |
| 725 | ((v)->header.size |= PSEUDOVECTOR_FLAG | ((code) << PSEUDOVECTOR_AREA_BITS)) |
| 726 | #define XSETPVECTYPESIZE(v, code, lispsize, restsize) \ |
| 727 | ((v)->header.size = (PSEUDOVECTOR_FLAG \ |
| 728 | | ((code) << PSEUDOVECTOR_AREA_BITS) \ |
| 729 | | ((restsize) << PSEUDOVECTOR_SIZE_BITS) \ |
| 730 | | (lispsize))) |
| 731 | |
| 732 | /* The cast to struct vectorlike_header * avoids aliasing issues. */ |
| 733 | #define XSETPSEUDOVECTOR(a, b, code) \ |
| 734 | XSETTYPED_PSEUDOVECTOR (a, b, \ |
| 735 | (((struct vectorlike_header *) \ |
| 736 | SCM_SMOB_DATA (a)) \ |
| 737 | ->size), \ |
| 738 | code) |
| 739 | #define XSETTYPED_PSEUDOVECTOR(a, b, size, code) \ |
| 740 | (XSETVECTOR (a, b), \ |
| 741 | eassert ((size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) \ |
| 742 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS)))) |
| 743 | |
| 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)) |
| 748 | #define XSETTERMINAL(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_TERMINAL)) |
| 749 | #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR)) |
| 750 | #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED)) |
| 751 | #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER)) |
| 752 | #define XSETCHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_CHAR_TABLE)) |
| 753 | #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR)) |
| 754 | #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE)) |
| 755 | |
| 756 | /* Type checking. */ |
| 757 | |
| 758 | LISP_MACRO_DEFUN_VOID (CHECK_TYPE, |
| 759 | (int ok, Lisp_Object predicate, Lisp_Object x), |
| 760 | (ok, predicate, x)) |
| 761 | |
| 762 | /* Deprecated and will be removed soon. */ |
| 763 | |
| 764 | #define INTERNAL_FIELD(field) field ## _ |
| 765 | |
| 766 | /* See the macros in intervals.h. */ |
| 767 | |
| 768 | typedef struct interval *INTERVAL; |
| 769 | |
| 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 | |
| 778 | LISP_MACRO_DEFUN (XCAR, Lisp_Object, (Lisp_Object c), (c)) |
| 779 | LISP_MACRO_DEFUN (XCDR, Lisp_Object, (Lisp_Object c), (c)) |
| 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' |
| 784 | should not be read after 'c' is first modified. */ |
| 785 | INLINE void |
| 786 | XSETCAR (Lisp_Object c, Lisp_Object n) |
| 787 | { |
| 788 | scm_set_car_x (c, n); |
| 789 | } |
| 790 | INLINE void |
| 791 | XSETCDR (Lisp_Object c, Lisp_Object n) |
| 792 | { |
| 793 | scm_set_cdr_x (c, n); |
| 794 | } |
| 795 | |
| 796 | /* Take the car or cdr of something whose type is not known. */ |
| 797 | INLINE Lisp_Object |
| 798 | CAR (Lisp_Object c) |
| 799 | { |
| 800 | return (CONSP (c) ? XCAR (c) |
| 801 | : NILP (c) ? Qnil |
| 802 | : wrong_type_argument (Qlistp, c)); |
| 803 | } |
| 804 | INLINE Lisp_Object |
| 805 | CDR (Lisp_Object c) |
| 806 | { |
| 807 | return (CONSP (c) ? XCDR (c) |
| 808 | : NILP (c) ? Qnil |
| 809 | : wrong_type_argument (Qlistp, c)); |
| 810 | } |
| 811 | |
| 812 | /* Take the car or cdr of something whose type is not known. */ |
| 813 | INLINE Lisp_Object |
| 814 | CAR_SAFE (Lisp_Object c) |
| 815 | { |
| 816 | return CONSP (c) ? XCAR (c) : Qnil; |
| 817 | } |
| 818 | INLINE Lisp_Object |
| 819 | CDR_SAFE (Lisp_Object c) |
| 820 | { |
| 821 | return CONSP (c) ? XCDR (c) : Qnil; |
| 822 | } |
| 823 | |
| 824 | /* In a string or vector, the sign bit of the `size' is the gc mark bit. */ |
| 825 | |
| 826 | /* True if STR is a multibyte string. */ |
| 827 | INLINE bool |
| 828 | STRING_MULTIBYTE (Lisp_Object str) |
| 829 | { |
| 830 | return 0 <= XSTRING (str)->size_byte; |
| 831 | } |
| 832 | |
| 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 |
| 842 | private. |
| 843 | |
| 844 | This is a macro for use in static initializers. The cast to |
| 845 | ptrdiff_t ensures that the macro is signed. */ |
| 846 | #define STRING_BYTES_BOUND \ |
| 847 | ((ptrdiff_t) min (MOST_POSITIVE_FIXNUM, min (SIZE_MAX, PTRDIFF_MAX) - 1)) |
| 848 | |
| 849 | /* Mark STR as a unibyte string. */ |
| 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) |
| 857 | |
| 858 | /* Mark STR as a multibyte string. Assure that STR contains only |
| 859 | ASCII characters in advance. */ |
| 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) |
| 867 | |
| 868 | /* Convenience functions for dealing with Lisp strings. */ |
| 869 | |
| 870 | INLINE unsigned char * |
| 871 | SDATA (Lisp_Object string) |
| 872 | { |
| 873 | return XSTRING (string)->data; |
| 874 | } |
| 875 | INLINE char * |
| 876 | SSDATA (Lisp_Object string) |
| 877 | { |
| 878 | /* Avoid "differ in sign" warnings. */ |
| 879 | return (char *) SDATA (string); |
| 880 | } |
| 881 | INLINE unsigned char |
| 882 | SREF (Lisp_Object string, ptrdiff_t index) |
| 883 | { |
| 884 | return SDATA (string)[index]; |
| 885 | } |
| 886 | INLINE void |
| 887 | SSET (Lisp_Object string, ptrdiff_t index, unsigned char new) |
| 888 | { |
| 889 | SDATA (string)[index] = new; |
| 890 | } |
| 891 | INLINE ptrdiff_t |
| 892 | SCHARS (Lisp_Object string) |
| 893 | { |
| 894 | return XSTRING (string)->size; |
| 895 | } |
| 896 | |
| 897 | INLINE ptrdiff_t |
| 898 | STRING_BYTES (struct Lisp_String *s) |
| 899 | { |
| 900 | return s->size_byte < 0 ? s->size : s->size_byte; |
| 901 | } |
| 902 | |
| 903 | INLINE ptrdiff_t |
| 904 | SBYTES (Lisp_Object string) |
| 905 | { |
| 906 | return STRING_BYTES (XSTRING (string)); |
| 907 | } |
| 908 | INLINE void |
| 909 | STRING_SET_CHARS (Lisp_Object string, ptrdiff_t newsize) |
| 910 | { |
| 911 | XSTRING (string)->size = newsize; |
| 912 | } |
| 913 | |
| 914 | /* Header of vector-like objects. This documents the layout constraints on |
| 915 | vectors and pseudovectors (objects of PVEC_xxx subtype). It also prevents |
| 916 | compilers from being fooled by Emacs's type punning: XSETPSEUDOVECTOR |
| 917 | and PSEUDOVECTORP cast their pointers to struct vectorlike_header *, |
| 918 | because when two such pointers potentially alias, a compiler won't |
| 919 | incorrectly reorder loads and stores to their size fields. See |
| 920 | Bug#8546. */ |
| 921 | struct vectorlike_header |
| 922 | { |
| 923 | Lisp_Object self; |
| 924 | |
| 925 | /* This field contains various pieces of information: |
| 926 | - The second bit (PSEUDOVECTOR_FLAG) indicates whether this is a plain |
| 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. |
| 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. */ |
| 943 | ptrdiff_t size; |
| 944 | }; |
| 945 | |
| 946 | /* A regular vector is just a header plus an array of Lisp_Objects. */ |
| 947 | |
| 948 | struct Lisp_Vector |
| 949 | { |
| 950 | struct vectorlike_header header; |
| 951 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
| 952 | }; |
| 953 | |
| 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; }) |
| 959 | }; |
| 960 | |
| 961 | /* A boolvector is a kind of vectorlike, with contents like a string. */ |
| 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; |
| 970 | /* The actual bits, packed into bytes. |
| 971 | Zeros fill out the last word if needed. |
| 972 | The bits are in little-endian order in the bytes, and |
| 973 | the bytes are in little-endian order in the words. */ |
| 974 | bits_word data[FLEXIBLE_ARRAY_MEMBER]; |
| 975 | }; |
| 976 | |
| 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 | |
| 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 | |
| 997 | /* The number of data words and bytes in a bool vector with SIZE bits. */ |
| 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 | |
| 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 | |
| 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 | |
| 1045 | /* Some handy constants for calculating sizes |
| 1046 | and offsets, mostly of vectorlike objects. */ |
| 1047 | |
| 1048 | enum |
| 1049 | { |
| 1050 | header_size = offsetof (struct Lisp_Vector, contents), |
| 1051 | bool_header_size = offsetof (struct Lisp_Bool_Vector, data), |
| 1052 | word_size = sizeof (Lisp_Object) |
| 1053 | }; |
| 1054 | |
| 1055 | /* Conveniences for dealing with Lisp arrays. */ |
| 1056 | |
| 1057 | INLINE Lisp_Object |
| 1058 | AREF (Lisp_Object array, ptrdiff_t idx) |
| 1059 | { |
| 1060 | return XVECTOR (array)->contents[idx]; |
| 1061 | } |
| 1062 | |
| 1063 | INLINE Lisp_Object * |
| 1064 | aref_addr (Lisp_Object array, ptrdiff_t idx) |
| 1065 | { |
| 1066 | return & XVECTOR (array)->contents[idx]; |
| 1067 | } |
| 1068 | |
| 1069 | INLINE ptrdiff_t |
| 1070 | ASIZE (Lisp_Object array) |
| 1071 | { |
| 1072 | return XVECTOR (array)->header.size; |
| 1073 | } |
| 1074 | |
| 1075 | INLINE void |
| 1076 | ASET (Lisp_Object array, ptrdiff_t idx, Lisp_Object val) |
| 1077 | { |
| 1078 | eassert (0 <= idx && idx < ASIZE (array)); |
| 1079 | XVECTOR (array)->contents[idx] = val; |
| 1080 | } |
| 1081 | |
| 1082 | INLINE void |
| 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. */ |
| 1087 | eassert (0 <= idx && idx < (ASIZE (array))); |
| 1088 | XVECTOR (array)->contents[idx] = val; |
| 1089 | } |
| 1090 | |
| 1091 | /* If a struct is made to look like a vector, this macro returns the length |
| 1092 | of the shortest vector that would hold that struct. */ |
| 1093 | |
| 1094 | #define VECSIZE(type) \ |
| 1095 | ((sizeof (type) - header_size + word_size - 1) / word_size) |
| 1096 | |
| 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). */ |
| 1100 | |
| 1101 | #define PSEUDOVECSIZE(type, nonlispfield) \ |
| 1102 | ((offsetof (type, nonlispfield) - header_size) / word_size) |
| 1103 | |
| 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 |
| 1106 | mathematical comparison; for example, UNSIGNED_CMP (0, <, -1) |
| 1107 | returns true. For efficiency, prefer plain unsigned comparison if A |
| 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 | |
| 1114 | /* True iff C is an ASCII character. */ |
| 1115 | #define ASCII_CHAR_P(c) UNSIGNED_CMP (c, <, 0x80) |
| 1116 | |
| 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. */ |
| 1126 | |
| 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 | }; |
| 1134 | |
| 1135 | extern const int chartab_size[4]; |
| 1136 | |
| 1137 | struct Lisp_Char_Table |
| 1138 | { |
| 1139 | /* HEADER.SIZE is the vector's size field, which also holds the |
| 1140 | pseudovector type information. It holds the size, too. |
| 1141 | The size counts the defalt, parent, purpose, ascii, |
| 1142 | contents, and extras slots. */ |
| 1143 | struct vectorlike_header header; |
| 1144 | |
| 1145 | /* This holds a default value, |
| 1146 | which is used whenever the value for a specific character is nil. */ |
| 1147 | Lisp_Object defalt; |
| 1148 | |
| 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. */ |
| 1152 | Lisp_Object parent; |
| 1153 | |
| 1154 | /* This is a symbol which says what kind of use this char-table is |
| 1155 | meant for. */ |
| 1156 | Lisp_Object purpose; |
| 1157 | |
| 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; |
| 1161 | |
| 1162 | Lisp_Object contents[(1 << CHARTAB_SIZE_BITS_0)]; |
| 1163 | |
| 1164 | /* These hold additional data. It is a vector. */ |
| 1165 | Lisp_Object extras[FLEXIBLE_ARRAY_MEMBER]; |
| 1166 | }; |
| 1167 | |
| 1168 | struct Lisp_Sub_Char_Table |
| 1169 | { |
| 1170 | /* HEADER.SIZE is the vector's size field, which also holds the |
| 1171 | pseudovector type information. It holds the size, too. */ |
| 1172 | struct vectorlike_header header; |
| 1173 | |
| 1174 | /* Depth of this sub char-table. It should be 1, 2, or 3. A sub |
| 1175 | char-table of depth 1 contains 16 elements, and each element |
| 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; |
| 1181 | |
| 1182 | /* Minimum character covered by the sub char-table. */ |
| 1183 | Lisp_Object min_char; |
| 1184 | |
| 1185 | /* Use set_sub_char_table_contents to set this. */ |
| 1186 | Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER]; |
| 1187 | }; |
| 1188 | |
| 1189 | INLINE Lisp_Object |
| 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. */ |
| 1209 | INLINE Lisp_Object |
| 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. */ |
| 1219 | INLINE void |
| 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 | |
| 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 | { |
| 1233 | CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras) |
| 1234 | }; |
| 1235 | |
| 1236 | /* Return the number of "extra" slots in the char table CT. */ |
| 1237 | |
| 1238 | INLINE int |
| 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 | } |
| 1244 | |
| 1245 | \f |
| 1246 | /*********************************************************************** |
| 1247 | Symbols |
| 1248 | ***********************************************************************/ |
| 1249 | |
| 1250 | enum symbol_redirect |
| 1251 | { |
| 1252 | SYMBOL_PLAINVAL = 4, |
| 1253 | SYMBOL_VARALIAS = 1, |
| 1254 | SYMBOL_LOCALIZED = 2, |
| 1255 | SYMBOL_FORWARDED = 3 |
| 1256 | }; |
| 1257 | |
| 1258 | struct Lisp_Symbol |
| 1259 | { |
| 1260 | Lisp_Object self_; |
| 1261 | |
| 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. |
| 1266 | 3 : it's a forwarding variable, the value is in `forward'. */ |
| 1267 | ENUM_BF (symbol_redirect) redirect_ : 3; |
| 1268 | |
| 1269 | /* Non-zero means symbol is constant, i.e. changing its value |
| 1270 | should signal an error. If the value is 3, then the var |
| 1271 | can be changed, but only by `defconst'. */ |
| 1272 | unsigned constant_ : 2; |
| 1273 | |
| 1274 | /* True means that this variable has been explicitly declared |
| 1275 | special (with `defvar' etc), and shouldn't be lexically bound. */ |
| 1276 | bool_bf declared_special_ : 1; |
| 1277 | |
| 1278 | /* Value of the symbol or Qunbound if unbound. Which alternative of the |
| 1279 | union is used depends on the `redirect' field above. */ |
| 1280 | union { |
| 1281 | Lisp_Object value_; |
| 1282 | sym_t alias_; |
| 1283 | struct Lisp_Buffer_Local_Value *blv_; |
| 1284 | union Lisp_Fwd *fwd_; |
| 1285 | }; |
| 1286 | }; |
| 1287 | |
| 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))) |
| 1296 | |
| 1297 | /* Value is name of symbol. */ |
| 1298 | |
| 1299 | INLINE sym_t |
| 1300 | SYMBOL_ALIAS (sym_t sym) |
| 1301 | { |
| 1302 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_VARALIAS); |
| 1303 | return scm_c_vector_ref (sym, 4); |
| 1304 | } |
| 1305 | INLINE struct Lisp_Buffer_Local_Value * |
| 1306 | SYMBOL_BLV (sym_t sym) |
| 1307 | { |
| 1308 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_LOCALIZED); |
| 1309 | return scm_to_pointer (scm_c_vector_ref (sym, 4)); |
| 1310 | } |
| 1311 | INLINE union Lisp_Fwd * |
| 1312 | SYMBOL_FWD (sym_t sym) |
| 1313 | { |
| 1314 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_FORWARDED); |
| 1315 | return scm_to_pointer (scm_c_vector_ref (sym, 4)); |
| 1316 | } |
| 1317 | |
| 1318 | LISP_MACRO_DEFUN_VOID (SET_SYMBOL_VAL, |
| 1319 | (sym_t sym, Lisp_Object v), (sym, v)) |
| 1320 | |
| 1321 | INLINE void |
| 1322 | SET_SYMBOL_ALIAS (sym_t sym, sym_t v) |
| 1323 | { |
| 1324 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_VARALIAS); |
| 1325 | scm_c_vector_set_x (sym, 4, v); |
| 1326 | } |
| 1327 | INLINE void |
| 1328 | SET_SYMBOL_BLV (sym_t sym, struct Lisp_Buffer_Local_Value *v) |
| 1329 | { |
| 1330 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_LOCALIZED); |
| 1331 | scm_c_vector_set_x (sym, 4, scm_from_pointer (v, NULL)); |
| 1332 | } |
| 1333 | INLINE void |
| 1334 | SET_SYMBOL_FWD (sym_t sym, union Lisp_Fwd *v) |
| 1335 | { |
| 1336 | eassert (SYMBOL_REDIRECT (sym) == SYMBOL_FORWARDED); |
| 1337 | scm_c_vector_set_x (sym, 4, scm_from_pointer (v, NULL)); |
| 1338 | } |
| 1339 | |
| 1340 | INLINE Lisp_Object |
| 1341 | SYMBOL_NAME (Lisp_Object sym) |
| 1342 | { |
| 1343 | return build_string (scm_to_locale_string (scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-name"), sym))); |
| 1344 | } |
| 1345 | |
| 1346 | /* Value is true if SYM is an interned symbol. */ |
| 1347 | |
| 1348 | INLINE bool |
| 1349 | SYMBOL_INTERNED_P (Lisp_Object sym) |
| 1350 | { |
| 1351 | if (EQ (sym, Qnil)) return true; |
| 1352 | if (EQ (sym, Qt)) return true; |
| 1353 | return scm_is_true (scm_symbol_interned_p (sym)); |
| 1354 | } |
| 1355 | |
| 1356 | INLINE Lisp_Object |
| 1357 | SYMBOL_FUNCTION (Lisp_Object sym) |
| 1358 | { |
| 1359 | return scm_call_1 (scm_c_public_ref ("elisp-functions", "symbol-function"), sym); |
| 1360 | } |
| 1361 | |
| 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 | |
| 1366 | LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P, int, (Lisp_Object sym), (sym)) |
| 1367 | |
| 1368 | #define DEFSYM(sym, name) \ |
| 1369 | do { (sym) = intern_c_string ((name)); staticpro (&(sym)); } while (false) |
| 1370 | |
| 1371 | LISP_MACRO_DEFUN (SYMBOL_VAL, Lisp_Object, (sym_t sym), (sym)) |
| 1372 | |
| 1373 | \f |
| 1374 | /*********************************************************************** |
| 1375 | Hash Tables |
| 1376 | ***********************************************************************/ |
| 1377 | |
| 1378 | /* The structure of a Lisp hash table. */ |
| 1379 | |
| 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 | |
| 1398 | struct Lisp_Hash_Table |
| 1399 | { |
| 1400 | /* This is for Lisp; the hash table code does not refer to it. */ |
| 1401 | struct vectorlike_header header; |
| 1402 | |
| 1403 | /* Nil if table is non-weak. Otherwise a symbol describing the |
| 1404 | weakness of the table. */ |
| 1405 | Lisp_Object weak; |
| 1406 | |
| 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 | |
| 1416 | /* Vector of hash codes. If hash[I] is nil, this means that the |
| 1417 | I-th entry is unused. */ |
| 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 | |
| 1433 | /* Only the fields above are traced normally by the GC. The ones below |
| 1434 | `count' are special and are either ignored by the GC or traced in |
| 1435 | a special way (e.g. because of weakness). */ |
| 1436 | |
| 1437 | /* Number of key/value entries in the table. */ |
| 1438 | ptrdiff_t count; |
| 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 | |
| 1445 | /* The comparison and hash functions. */ |
| 1446 | struct hash_table_test test; |
| 1447 | |
| 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; |
| 1451 | }; |
| 1452 | |
| 1453 | |
| 1454 | INLINE struct Lisp_Hash_Table * |
| 1455 | XHASH_TABLE (Lisp_Object a) |
| 1456 | { |
| 1457 | return SMOB_PTR (a); |
| 1458 | } |
| 1459 | |
| 1460 | #define XSET_HASH_TABLE(VAR, PTR) \ |
| 1461 | (XSETPSEUDOVECTOR (VAR, PTR, PVEC_HASH_TABLE)) |
| 1462 | |
| 1463 | INLINE bool |
| 1464 | HASH_TABLE_P (Lisp_Object a) |
| 1465 | { |
| 1466 | return PSEUDOVECTORP (a, PVEC_HASH_TABLE); |
| 1467 | } |
| 1468 | |
| 1469 | /* Value is the key part of entry IDX in hash table H. */ |
| 1470 | INLINE Lisp_Object |
| 1471 | HASH_KEY (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
| 1472 | { |
| 1473 | return AREF (h->key_and_value, 2 * idx); |
| 1474 | } |
| 1475 | |
| 1476 | /* Value is the value part of entry IDX in hash table H. */ |
| 1477 | INLINE Lisp_Object |
| 1478 | HASH_VALUE (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
| 1479 | { |
| 1480 | return AREF (h->key_and_value, 2 * idx + 1); |
| 1481 | } |
| 1482 | |
| 1483 | /* Value is the index of the next entry following the one at IDX |
| 1484 | in hash table H. */ |
| 1485 | INLINE Lisp_Object |
| 1486 | HASH_NEXT (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
| 1487 | { |
| 1488 | return AREF (h->next, idx); |
| 1489 | } |
| 1490 | |
| 1491 | /* Value is the hash code computed for entry IDX in hash table H. */ |
| 1492 | INLINE Lisp_Object |
| 1493 | HASH_HASH (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
| 1494 | { |
| 1495 | return AREF (h->hash, idx); |
| 1496 | } |
| 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. */ |
| 1500 | INLINE Lisp_Object |
| 1501 | HASH_INDEX (struct Lisp_Hash_Table *h, ptrdiff_t idx) |
| 1502 | { |
| 1503 | return AREF (h->index, idx); |
| 1504 | } |
| 1505 | |
| 1506 | /* Value is the size of hash table H. */ |
| 1507 | INLINE ptrdiff_t |
| 1508 | HASH_TABLE_SIZE (struct Lisp_Hash_Table *h) |
| 1509 | { |
| 1510 | return ASIZE (h->next); |
| 1511 | } |
| 1512 | |
| 1513 | /* Default size for hash tables if not specified. */ |
| 1514 | |
| 1515 | enum DEFAULT_HASH_SIZE { DEFAULT_HASH_SIZE = 65 }; |
| 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 | |
| 1521 | static double const DEFAULT_REHASH_THRESHOLD = 0.8; |
| 1522 | |
| 1523 | /* Default factor by which to increase the size of a hash table. */ |
| 1524 | |
| 1525 | static double const DEFAULT_REHASH_SIZE = 1.5; |
| 1526 | |
| 1527 | /* Combine two integers X and Y for hashing. The result might not fit |
| 1528 | into a Lisp integer. */ |
| 1529 | |
| 1530 | INLINE EMACS_UINT |
| 1531 | sxhash_combine (EMACS_UINT x, EMACS_UINT y) |
| 1532 | { |
| 1533 | return (x << 4) + (x >> (BITS_PER_EMACS_INT - 4)) + y; |
| 1534 | } |
| 1535 | |
| 1536 | /* Hash X, returning a value that fits into a fixnum. */ |
| 1537 | |
| 1538 | INLINE EMACS_UINT |
| 1539 | SXHASH_REDUCE (EMACS_UINT x) |
| 1540 | { |
| 1541 | return (x ^ x >> (BITS_PER_EMACS_INT - FIXNUM_BITS + 1)) & INTMASK; |
| 1542 | } |
| 1543 | |
| 1544 | /* These structures are used for various misc types. */ |
| 1545 | |
| 1546 | struct Lisp_Misc_Any /* Supertype of all Misc types. */ |
| 1547 | { |
| 1548 | Lisp_Object self; |
| 1549 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_??? */ |
| 1550 | }; |
| 1551 | |
| 1552 | struct Lisp_Marker |
| 1553 | { |
| 1554 | Lisp_Object self; |
| 1555 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Marker */ |
| 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. */ |
| 1559 | bool_bf need_adjustment : 1; |
| 1560 | /* True means normal insertion at the marker's position |
| 1561 | leaves the marker after the inserted text. */ |
| 1562 | bool_bf insertion_type : 1; |
| 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. |
| 1571 | - Fkill_buffer: to only unchain the markers of current indirect buffer. |
| 1572 | */ |
| 1573 | struct buffer *buffer; |
| 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. */ |
| 1580 | /* We could remove it and use an array in buffer_text instead. |
| 1581 | That would also allow to preserve it ordered. */ |
| 1582 | struct Lisp_Marker *next; |
| 1583 | /* This is the char position where the marker points. */ |
| 1584 | ptrdiff_t charpos; |
| 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). */ |
| 1589 | ptrdiff_t bytepos; |
| 1590 | }; |
| 1591 | |
| 1592 | /* START and END are markers in the overlay's buffer, and |
| 1593 | PLIST is the overlay's property list. */ |
| 1594 | struct Lisp_Overlay |
| 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 | */ |
| 1606 | { |
| 1607 | Lisp_Object self; |
| 1608 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Overlay */ |
| 1609 | struct Lisp_Overlay *next; |
| 1610 | Lisp_Object start; |
| 1611 | Lisp_Object end; |
| 1612 | Lisp_Object plist; |
| 1613 | }; |
| 1614 | |
| 1615 | /* Types of data which may be saved in a Lisp_Save_Value. */ |
| 1616 | |
| 1617 | enum |
| 1618 | { |
| 1619 | SAVE_UNUSED, |
| 1620 | SAVE_INTEGER, |
| 1621 | SAVE_FUNCPOINTER, |
| 1622 | SAVE_POINTER, |
| 1623 | SAVE_OBJECT |
| 1624 | }; |
| 1625 | |
| 1626 | /* Number of bits needed to store one of the above values. */ |
| 1627 | enum { SAVE_SLOT_BITS = 3 }; |
| 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), |
| 1648 | SAVE_TYPE_FUNCPTR_PTR_OBJ |
| 1649 | = SAVE_FUNCPOINTER + (SAVE_TYPE_PTR_OBJ << SAVE_SLOT_BITS), |
| 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 | |
| 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 |
| 1658 | record_unwind_protect when two or more values need to be saved. |
| 1659 | For example: |
| 1660 | |
| 1661 | ... |
| 1662 | struct my_data *md = get_my_data (); |
| 1663 | ptrdiff_t mi = get_my_integer (); |
| 1664 | record_unwind_protect (my_unwind, make_save_ptr_int (md, mi)); |
| 1665 | ... |
| 1666 | |
| 1667 | Lisp_Object my_unwind (Lisp_Object arg) |
| 1668 | { |
| 1669 | struct my_data *md = XSAVE_POINTER (arg, 0); |
| 1670 | ptrdiff_t mi = XSAVE_INTEGER (arg, 1); |
| 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) |
| 1677 | and XSAVE_OBJECT (arg, 0) are wrong because nothing was saved in slot 2 and |
| 1678 | slot 0 is a pointer. */ |
| 1679 | |
| 1680 | typedef void (*voidfuncptr) (void); |
| 1681 | |
| 1682 | struct Lisp_Save_Value |
| 1683 | { |
| 1684 | Lisp_Object self; |
| 1685 | ENUM_BF (Lisp_Misc_Type) type : 16; /* = Lisp_Misc_Save_Value */ |
| 1686 | unsigned spacer : 32 - (16 + SAVE_TYPE_BITS); |
| 1687 | |
| 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. |
| 1692 | |
| 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. */ |
| 1695 | ENUM_BF (Lisp_Save_Type) save_type : SAVE_TYPE_BITS; |
| 1696 | union { |
| 1697 | void *pointer; |
| 1698 | voidfuncptr funcpointer; |
| 1699 | ptrdiff_t integer; |
| 1700 | Lisp_Object object; |
| 1701 | } data[SAVE_VALUE_SLOTS]; |
| 1702 | }; |
| 1703 | |
| 1704 | /* Return the type of V's Nth saved value. */ |
| 1705 | INLINE int |
| 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 | |
| 1714 | INLINE void * |
| 1715 | XSAVE_POINTER (Lisp_Object obj, int n) |
| 1716 | { |
| 1717 | eassert (save_type (XSAVE_VALUE (obj), n) == SAVE_POINTER); |
| 1718 | return XSAVE_VALUE (obj)->data[n].pointer; |
| 1719 | } |
| 1720 | INLINE void |
| 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 | } |
| 1726 | INLINE voidfuncptr |
| 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 | } |
| 1732 | |
| 1733 | /* Likewise for the saved integer. */ |
| 1734 | |
| 1735 | INLINE ptrdiff_t |
| 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 | } |
| 1741 | INLINE void |
| 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 | |
| 1750 | INLINE Lisp_Object |
| 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 | |
| 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. */ |
| 1763 | struct Lisp_Marker u_marker; |
| 1764 | struct Lisp_Overlay u_overlay; |
| 1765 | struct Lisp_Save_Value u_save_value; |
| 1766 | }; |
| 1767 | |
| 1768 | INLINE union Lisp_Misc * |
| 1769 | XMISC (Lisp_Object a) |
| 1770 | { |
| 1771 | return SMOB_PTR (a); |
| 1772 | } |
| 1773 | |
| 1774 | INLINE struct Lisp_Misc_Any * |
| 1775 | XMISCANY (Lisp_Object a) |
| 1776 | { |
| 1777 | eassert (MISCP (a)); |
| 1778 | return & XMISC (a)->u_any; |
| 1779 | } |
| 1780 | |
| 1781 | INLINE enum Lisp_Misc_Type |
| 1782 | XMISCTYPE (Lisp_Object a) |
| 1783 | { |
| 1784 | return XMISCANY (a)->type; |
| 1785 | } |
| 1786 | |
| 1787 | INLINE struct Lisp_Marker * |
| 1788 | XMARKER (Lisp_Object a) |
| 1789 | { |
| 1790 | eassert (MARKERP (a)); |
| 1791 | return & XMISC (a)->u_marker; |
| 1792 | } |
| 1793 | |
| 1794 | INLINE struct Lisp_Overlay * |
| 1795 | XOVERLAY (Lisp_Object a) |
| 1796 | { |
| 1797 | eassert (OVERLAYP (a)); |
| 1798 | return & XMISC (a)->u_overlay; |
| 1799 | } |
| 1800 | |
| 1801 | INLINE struct Lisp_Save_Value * |
| 1802 | XSAVE_VALUE (Lisp_Object a) |
| 1803 | { |
| 1804 | eassert (SAVE_VALUEP (a)); |
| 1805 | return & XMISC (a)->u_save_value; |
| 1806 | } |
| 1807 | \f |
| 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 |
| 1813 | { |
| 1814 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Int */ |
| 1815 | EMACS_INT *intvar; |
| 1816 | }; |
| 1817 | |
| 1818 | /* Boolean forwarding pointer to an int variable. |
| 1819 | This is like Lisp_Intfwd except that the ostensible |
| 1820 | "value" of the symbol is t if the bool variable is true, |
| 1821 | nil if it is false. */ |
| 1822 | struct Lisp_Boolfwd |
| 1823 | { |
| 1824 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Bool */ |
| 1825 | bool *boolvar; |
| 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 | { |
| 1834 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Obj */ |
| 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 | { |
| 1842 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Buffer_Obj */ |
| 1843 | int offset; |
| 1844 | /* One of Qnil, Qintegerp, Qsymbolp, Qstringp, Qfloatp or Qnumberp. */ |
| 1845 | Lisp_Object predicate; |
| 1846 | }; |
| 1847 | |
| 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'. |
| 1859 | |
| 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. |
| 1867 | |
| 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. */ |
| 1871 | |
| 1872 | struct Lisp_Buffer_Local_Value |
| 1873 | { |
| 1874 | /* True means that merely setting the variable creates a local |
| 1875 | binding for the current buffer. */ |
| 1876 | bool_bf local_if_set : 1; |
| 1877 | /* True means this variable can have frame-local bindings, otherwise, it is |
| 1878 | can have buffer-local bindings. The two cannot be combined. */ |
| 1879 | bool_bf frame_local : 1; |
| 1880 | /* True means that the binding now loaded was found. |
| 1881 | Presumably equivalent to (defcell!=valcell). */ |
| 1882 | bool_bf found : 1; |
| 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; |
| 1896 | }; |
| 1897 | |
| 1898 | /* Like Lisp_Objfwd except that value lives in a slot in the |
| 1899 | current kboard. */ |
| 1900 | struct Lisp_Kboard_Objfwd |
| 1901 | { |
| 1902 | enum Lisp_Fwd_Type type; /* = Lisp_Fwd_Kboard_Obj */ |
| 1903 | int offset; |
| 1904 | }; |
| 1905 | |
| 1906 | union Lisp_Fwd |
| 1907 | { |
| 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; |
| 1913 | }; |
| 1914 | |
| 1915 | INLINE enum Lisp_Fwd_Type |
| 1916 | XFWDTYPE (union Lisp_Fwd *a) |
| 1917 | { |
| 1918 | return a->u_intfwd.type; |
| 1919 | } |
| 1920 | |
| 1921 | INLINE struct Lisp_Buffer_Objfwd * |
| 1922 | XBUFFER_OBJFWD (union Lisp_Fwd *a) |
| 1923 | { |
| 1924 | eassert (BUFFER_OBJFWDP (a)); |
| 1925 | return &a->u_buffer_objfwd; |
| 1926 | } |
| 1927 | \f |
| 1928 | #define XFLOAT_DATA(f) (scm_to_double (f)) |
| 1929 | |
| 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). */ |
| 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 | }; |
| 1943 | |
| 1944 | /* A character, declared with the following typedef, is a member |
| 1945 | of some character set associated with the current buffer. */ |
| 1946 | #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */ |
| 1947 | #define _UCHAR_T |
| 1948 | typedef unsigned char UCHAR; |
| 1949 | #endif |
| 1950 | |
| 1951 | /* Meanings of slots in a Lisp_Compiled: */ |
| 1952 | |
| 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 | }; |
| 1962 | |
| 1963 | /* Flag bits in a character. These also get used in termhooks.h. |
| 1964 | Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE |
| 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. */ |
| 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 = |
| 1977 | CHAR_ALT | CHAR_SUPER | CHAR_HYPER | CHAR_SHIFT | CHAR_CTL | CHAR_META, |
| 1978 | |
| 1979 | /* Actually, the current Emacs uses 22 bits for the character value |
| 1980 | itself. */ |
| 1981 | CHARACTERBITS = 22 |
| 1982 | }; |
| 1983 | \f |
| 1984 | /* Data type checking. */ |
| 1985 | |
| 1986 | LISP_MACRO_DEFUN (NILP, bool, (Lisp_Object x), (x)) |
| 1987 | |
| 1988 | INLINE bool |
| 1989 | NUMBERP (Lisp_Object x) |
| 1990 | { |
| 1991 | return INTEGERP (x) || FLOATP (x); |
| 1992 | } |
| 1993 | INLINE bool |
| 1994 | NATNUMP (Lisp_Object x) |
| 1995 | { |
| 1996 | return INTEGERP (x) && 0 <= XINT (x); |
| 1997 | } |
| 1998 | |
| 1999 | INLINE bool |
| 2000 | RANGED_INTEGERP (intmax_t lo, Lisp_Object x, intmax_t hi) |
| 2001 | { |
| 2002 | return INTEGERP (x) && lo <= XINT (x) && XINT (x) <= hi; |
| 2003 | } |
| 2004 | |
| 2005 | #define TYPE_RANGED_INTEGERP(type, x) \ |
| 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 | |
| 2018 | INLINE bool |
| 2019 | STRINGP (Lisp_Object x) |
| 2020 | { |
| 2021 | return SMOB_TYPEP (x, lisp_string_tag); |
| 2022 | } |
| 2023 | INLINE bool |
| 2024 | VECTORP (Lisp_Object x) |
| 2025 | { |
| 2026 | return VECTORLIKEP (x) && ! (ASIZE (x) & PSEUDOVECTOR_FLAG); |
| 2027 | } |
| 2028 | INLINE bool |
| 2029 | OVERLAYP (Lisp_Object x) |
| 2030 | { |
| 2031 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Overlay; |
| 2032 | } |
| 2033 | INLINE bool |
| 2034 | SAVE_VALUEP (Lisp_Object x) |
| 2035 | { |
| 2036 | return MISCP (x) && XMISCTYPE (x) == Lisp_Misc_Save_Value; |
| 2037 | } |
| 2038 | |
| 2039 | INLINE bool |
| 2040 | AUTOLOADP (Lisp_Object x) |
| 2041 | { |
| 2042 | return CONSP (x) && EQ (Qautoload, XCAR (x)); |
| 2043 | } |
| 2044 | |
| 2045 | INLINE bool |
| 2046 | BUFFER_OBJFWDP (union Lisp_Fwd *a) |
| 2047 | { |
| 2048 | return XFWDTYPE (a) == Lisp_Fwd_Buffer_Obj; |
| 2049 | } |
| 2050 | |
| 2051 | INLINE bool |
| 2052 | PSEUDOVECTOR_TYPEP (struct vectorlike_header *a, int code) |
| 2053 | { |
| 2054 | return ((a->size & (PSEUDOVECTOR_FLAG | PVEC_TYPE_MASK)) |
| 2055 | == (PSEUDOVECTOR_FLAG | (code << PSEUDOVECTOR_AREA_BITS))); |
| 2056 | } |
| 2057 | |
| 2058 | /* True if A is a pseudovector whose code is CODE. */ |
| 2059 | INLINE bool |
| 2060 | PSEUDOVECTORP (Lisp_Object a, int code) |
| 2061 | { |
| 2062 | if (! VECTORLIKEP (a)) |
| 2063 | return false; |
| 2064 | else |
| 2065 | { |
| 2066 | /* Converting to struct vectorlike_header * avoids aliasing issues. */ |
| 2067 | struct vectorlike_header *h = SMOB_PTR (a); |
| 2068 | return PSEUDOVECTOR_TYPEP (h, code); |
| 2069 | } |
| 2070 | } |
| 2071 | |
| 2072 | /* Test for specific pseudovector types. */ |
| 2073 | |
| 2074 | INLINE bool |
| 2075 | WINDOW_CONFIGURATIONP (Lisp_Object a) |
| 2076 | { |
| 2077 | return PSEUDOVECTORP (a, PVEC_WINDOW_CONFIGURATION); |
| 2078 | } |
| 2079 | |
| 2080 | INLINE bool |
| 2081 | PROCESSP (Lisp_Object a) |
| 2082 | { |
| 2083 | return PSEUDOVECTORP (a, PVEC_PROCESS); |
| 2084 | } |
| 2085 | |
| 2086 | INLINE bool |
| 2087 | WINDOWP (Lisp_Object a) |
| 2088 | { |
| 2089 | return PSEUDOVECTORP (a, PVEC_WINDOW); |
| 2090 | } |
| 2091 | |
| 2092 | INLINE bool |
| 2093 | TERMINALP (Lisp_Object a) |
| 2094 | { |
| 2095 | return PSEUDOVECTORP (a, PVEC_TERMINAL); |
| 2096 | } |
| 2097 | |
| 2098 | INLINE bool |
| 2099 | COMPILEDP (Lisp_Object a) |
| 2100 | { |
| 2101 | return PSEUDOVECTORP (a, PVEC_COMPILED); |
| 2102 | } |
| 2103 | |
| 2104 | INLINE bool |
| 2105 | BUFFERP (Lisp_Object a) |
| 2106 | { |
| 2107 | return PSEUDOVECTORP (a, PVEC_BUFFER); |
| 2108 | } |
| 2109 | |
| 2110 | INLINE bool |
| 2111 | CHAR_TABLE_P (Lisp_Object a) |
| 2112 | { |
| 2113 | return PSEUDOVECTORP (a, PVEC_CHAR_TABLE); |
| 2114 | } |
| 2115 | |
| 2116 | INLINE bool |
| 2117 | SUB_CHAR_TABLE_P (Lisp_Object a) |
| 2118 | { |
| 2119 | return PSEUDOVECTORP (a, PVEC_SUB_CHAR_TABLE); |
| 2120 | } |
| 2121 | |
| 2122 | INLINE bool |
| 2123 | BOOL_VECTOR_P (Lisp_Object a) |
| 2124 | { |
| 2125 | return PSEUDOVECTORP (a, PVEC_BOOL_VECTOR); |
| 2126 | } |
| 2127 | |
| 2128 | INLINE bool |
| 2129 | FRAMEP (Lisp_Object a) |
| 2130 | { |
| 2131 | return PSEUDOVECTORP (a, PVEC_FRAME); |
| 2132 | } |
| 2133 | |
| 2134 | /* Test for image (image . spec) */ |
| 2135 | INLINE bool |
| 2136 | IMAGEP (Lisp_Object x) |
| 2137 | { |
| 2138 | return CONSP (x) && EQ (XCAR (x), Qimage); |
| 2139 | } |
| 2140 | |
| 2141 | /* Array types. */ |
| 2142 | INLINE bool |
| 2143 | ARRAYP (Lisp_Object x) |
| 2144 | { |
| 2145 | return VECTORP (x) || STRINGP (x) || CHAR_TABLE_P (x) || BOOL_VECTOR_P (x); |
| 2146 | } |
| 2147 | \f |
| 2148 | INLINE void |
| 2149 | CHECK_LIST (Lisp_Object x) |
| 2150 | { |
| 2151 | CHECK_TYPE (CONSP (x) || NILP (x), Qlistp, x); |
| 2152 | } |
| 2153 | |
| 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)) |
| 2157 | |
| 2158 | INLINE void |
| 2159 | CHECK_STRING (Lisp_Object x) |
| 2160 | { |
| 2161 | CHECK_TYPE (STRINGP (x), Qstringp, x); |
| 2162 | } |
| 2163 | INLINE void |
| 2164 | CHECK_STRING_CAR (Lisp_Object x) |
| 2165 | { |
| 2166 | CHECK_TYPE (STRINGP (XCAR (x)), Qstringp, XCAR (x)); |
| 2167 | } |
| 2168 | INLINE void |
| 2169 | CHECK_CONS (Lisp_Object x) |
| 2170 | { |
| 2171 | CHECK_TYPE (CONSP (x), Qconsp, x); |
| 2172 | } |
| 2173 | INLINE void |
| 2174 | CHECK_VECTOR (Lisp_Object x) |
| 2175 | { |
| 2176 | CHECK_TYPE (VECTORP (x), Qvectorp, x); |
| 2177 | } |
| 2178 | INLINE void |
| 2179 | CHECK_BOOL_VECTOR (Lisp_Object x) |
| 2180 | { |
| 2181 | CHECK_TYPE (BOOL_VECTOR_P (x), Qbool_vector_p, x); |
| 2182 | } |
| 2183 | INLINE void |
| 2184 | CHECK_VECTOR_OR_STRING (Lisp_Object x) |
| 2185 | { |
| 2186 | CHECK_TYPE (VECTORP (x) || STRINGP (x), Qarrayp, x); |
| 2187 | } |
| 2188 | INLINE void |
| 2189 | CHECK_ARRAY (Lisp_Object x, Lisp_Object predicate) |
| 2190 | { |
| 2191 | CHECK_TYPE (ARRAYP (x), predicate, x); |
| 2192 | } |
| 2193 | INLINE void |
| 2194 | CHECK_BUFFER (Lisp_Object x) |
| 2195 | { |
| 2196 | CHECK_TYPE (BUFFERP (x), Qbufferp, x); |
| 2197 | } |
| 2198 | INLINE void |
| 2199 | CHECK_WINDOW (Lisp_Object x) |
| 2200 | { |
| 2201 | CHECK_TYPE (WINDOWP (x), Qwindowp, x); |
| 2202 | } |
| 2203 | #ifdef subprocesses |
| 2204 | INLINE void |
| 2205 | CHECK_PROCESS (Lisp_Object x) |
| 2206 | { |
| 2207 | CHECK_TYPE (PROCESSP (x), Qprocessp, x); |
| 2208 | } |
| 2209 | #endif |
| 2210 | INLINE void |
| 2211 | CHECK_NATNUM (Lisp_Object x) |
| 2212 | { |
| 2213 | CHECK_TYPE (NATNUMP (x), Qwholenump, x); |
| 2214 | } |
| 2215 | |
| 2216 | #define CHECK_RANGED_INTEGER(x, lo, hi) \ |
| 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))); \ |
| 2226 | } while (false) |
| 2227 | #define CHECK_TYPE_RANGED_INTEGER(type, x) \ |
| 2228 | do { \ |
| 2229 | if (TYPE_SIGNED (type)) \ |
| 2230 | CHECK_RANGED_INTEGER (x, TYPE_MINIMUM (type), TYPE_MAXIMUM (type)); \ |
| 2231 | else \ |
| 2232 | CHECK_RANGED_INTEGER (x, 0, TYPE_MAXIMUM (type)); \ |
| 2233 | } while (false) |
| 2234 | |
| 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) |
| 2242 | |
| 2243 | INLINE double |
| 2244 | XFLOATINT (Lisp_Object n) |
| 2245 | { |
| 2246 | return extract_float (n); |
| 2247 | } |
| 2248 | |
| 2249 | INLINE void |
| 2250 | CHECK_NUMBER_OR_FLOAT (Lisp_Object x) |
| 2251 | { |
| 2252 | CHECK_TYPE (FLOATP (x) || INTEGERP (x), Qnumberp, x); |
| 2253 | } |
| 2254 | |
| 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) |
| 2262 | |
| 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. */ |
| 2265 | INLINE void |
| 2266 | CHECK_NUMBER_CAR (Lisp_Object x) |
| 2267 | { |
| 2268 | Lisp_Object tmp = XCAR (x); |
| 2269 | CHECK_NUMBER (tmp); |
| 2270 | XSETCAR (x, tmp); |
| 2271 | } |
| 2272 | |
| 2273 | INLINE void |
| 2274 | CHECK_NUMBER_CDR (Lisp_Object x) |
| 2275 | { |
| 2276 | Lisp_Object tmp = XCDR (x); |
| 2277 | CHECK_NUMBER (tmp); |
| 2278 | XSETCDR (x, tmp); |
| 2279 | } |
| 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 |
| 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'. |
| 2303 | A null string means call interactively with no arguments. |
| 2304 | `doc' is documentation for the user. */ |
| 2305 | |
| 2306 | /* This version of DEFUN declares a function prototype with the right |
| 2307 | arguments, so we can catch errors with maxargs at compile-time. */ |
| 2308 | #define DEFUN(lname, fnname, sname, minargs, maxargs, intspec, doc) \ |
| 2309 | SCM_SNARF_INIT (defsubr (lname, gsubr_ ## fnname, minargs, maxargs, intspec)) \ |
| 2310 | Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \ |
| 2311 | DEFUN_GSUBR_ ## maxargs (lname, fnname, minargs, maxargs) \ |
| 2312 | Lisp_Object fnname |
| 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 | } |
| 2373 | |
| 2374 | /* Note that the weird token-substitution semantics of ANSI C makes |
| 2375 | this work for MANY and UNEVALLED. */ |
| 2376 | #define DEFUN_ARGS_MANY (ptrdiff_t, Lisp_Object *) |
| 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) |
| 2389 | #define DEFUN_ARGS_8 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \ |
| 2390 | Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object) |
| 2391 | |
| 2392 | #define WRAP1(cfn, lfn) \ |
| 2393 | SCM_SNARF_INIT (DEFSYM (cfn ## _sym, lfn)) \ |
| 2394 | static Lisp_Object cfn ## _sym; \ |
| 2395 | Lisp_Object cfn (Lisp_Object a) \ |
| 2396 | { return call1 (cfn ## _sym, a); } |
| 2397 | #define WRAP2(cfn, lfn) Lisp_Object cfn (Lisp_Object a, Lisp_Object b) { return call2 (intern (lfn), a, b); } |
| 2398 | |
| 2399 | /* True if OBJ is a Lisp function. */ |
| 2400 | INLINE bool |
| 2401 | FUNCTIONP (Lisp_Object obj) |
| 2402 | { |
| 2403 | return functionp (obj); |
| 2404 | } |
| 2405 | |
| 2406 | /* defsubr (Sname); |
| 2407 | is how we define the symbol for function `name' at start-up time. */ |
| 2408 | extern void defsubr (const char *, scm_t_subr, short, short, const char *); |
| 2409 | |
| 2410 | enum maxargs |
| 2411 | { |
| 2412 | MANY = -2, |
| 2413 | UNEVALLED = -1 |
| 2414 | }; |
| 2415 | |
| 2416 | extern void defvar_lisp (struct Lisp_Objfwd *, const char *, Lisp_Object *); |
| 2417 | extern void defvar_lisp_nopro (struct Lisp_Objfwd *, const char *, Lisp_Object *); |
| 2418 | extern void defvar_bool (struct Lisp_Boolfwd *, const char *, bool *); |
| 2419 | extern void defvar_int (struct Lisp_Intfwd *, const char *, EMACS_INT *); |
| 2420 | extern void defvar_kboard (struct Lisp_Kboard_Objfwd *, const char *, int); |
| 2421 | |
| 2422 | /* Macros we use to define forwarded Lisp variables. |
| 2423 | These are used in the syms_of_FILENAME functions. |
| 2424 | |
| 2425 | An ordinary (not in buffer_defaults, per-buffer, or per-keyboard) |
| 2426 | lisp variable is actually a field in `struct emacs_globals'. The |
| 2427 | field's name begins with "f_", which is a convention enforced by |
| 2428 | these macros. Each such global has a corresponding #define in |
| 2429 | globals.h; the plain name should be used in the code. |
| 2430 | |
| 2431 | E.g., the global "cons_cells_consed" is declared as "int |
| 2432 | f_cons_cells_consed" in globals.h, but there is a define: |
| 2433 | |
| 2434 | #define cons_cells_consed globals.f_cons_cells_consed |
| 2435 | |
| 2436 | All C code uses the `cons_cells_consed' name. This is all done |
| 2437 | this way to support indirection for multi-threaded Emacs. */ |
| 2438 | |
| 2439 | #define DEFVAR_LISP(lname, vname, doc) \ |
| 2440 | do { \ |
| 2441 | static struct Lisp_Objfwd o_fwd; \ |
| 2442 | defvar_lisp (&o_fwd, lname, &globals.f_ ## vname); \ |
| 2443 | } while (false) |
| 2444 | #define DEFVAR_LISP_NOPRO(lname, vname, doc) \ |
| 2445 | do { \ |
| 2446 | static struct Lisp_Objfwd o_fwd; \ |
| 2447 | defvar_lisp_nopro (&o_fwd, lname, &globals.f_ ## vname); \ |
| 2448 | } while (false) |
| 2449 | #define DEFVAR_BOOL(lname, vname, doc) \ |
| 2450 | do { \ |
| 2451 | static struct Lisp_Boolfwd b_fwd; \ |
| 2452 | defvar_bool (&b_fwd, lname, &globals.f_ ## vname); \ |
| 2453 | } while (false) |
| 2454 | #define DEFVAR_INT(lname, vname, doc) \ |
| 2455 | do { \ |
| 2456 | static struct Lisp_Intfwd i_fwd; \ |
| 2457 | defvar_int (&i_fwd, lname, &globals.f_ ## vname); \ |
| 2458 | } while (false) |
| 2459 | |
| 2460 | #define DEFVAR_BUFFER_DEFAULTS(lname, vname, doc) \ |
| 2461 | do { \ |
| 2462 | static struct Lisp_Objfwd o_fwd; \ |
| 2463 | defvar_lisp_nopro (&o_fwd, lname, &BVAR (&buffer_defaults, vname)); \ |
| 2464 | } while (false) |
| 2465 | |
| 2466 | #define DEFVAR_KBOARD(lname, vname, doc) \ |
| 2467 | do { \ |
| 2468 | static struct Lisp_Kboard_Objfwd ko_fwd; \ |
| 2469 | defvar_kboard (&ko_fwd, lname, offsetof (KBOARD, vname ## _)); \ |
| 2470 | } while (false) |
| 2471 | \f |
| 2472 | /* Save and restore the instruction and environment pointers, |
| 2473 | without affecting the signal mask. */ |
| 2474 | |
| 2475 | #ifdef HAVE__SETJMP |
| 2476 | typedef jmp_buf sys_jmp_buf; |
| 2477 | # define sys_setjmp(j) _setjmp (j) |
| 2478 | # define sys_longjmp(j, v) _longjmp (j, v) |
| 2479 | #elif defined HAVE_SIGSETJMP |
| 2480 | typedef sigjmp_buf sys_jmp_buf; |
| 2481 | # define sys_setjmp(j) sigsetjmp (j, 0) |
| 2482 | # define sys_longjmp(j, v) siglongjmp (j, v) |
| 2483 | #else |
| 2484 | /* A platform that uses neither _longjmp nor siglongjmp; assume |
| 2485 | longjmp does not affect the sigmask. */ |
| 2486 | typedef jmp_buf sys_jmp_buf; |
| 2487 | # define sys_setjmp(j) setjmp (j) |
| 2488 | # define sys_longjmp(j, v) longjmp (j, v) |
| 2489 | #endif |
| 2490 | |
| 2491 | \f |
| 2492 | /* Elisp uses several stacks: |
| 2493 | - the C stack. |
| 2494 | - the bytecode stack: used internally by the bytecode interpreter. |
| 2495 | Allocated from the C stack. |
| 2496 | - The specpdl stack: keeps track of active unwind-protect and |
| 2497 | dynamic-let-bindings. Allocated from the `specpdl' array, a manually |
| 2498 | managed stack. |
| 2499 | - The handler stack: keeps track of active catch tags and condition-case |
| 2500 | handlers. Allocated in a manually managed stack implemented by a |
| 2501 | doubly-linked list allocated via xmalloc and never freed. */ |
| 2502 | |
| 2503 | /* Structure for recording Lisp call stack for backtrace purposes. */ |
| 2504 | |
| 2505 | /* The special binding stack holds the outer values of variables while |
| 2506 | they are bound by a function application or a let form, stores the |
| 2507 | code to be executed for unwind-protect forms. |
| 2508 | |
| 2509 | NOTE: The specbinding union is defined here, because SPECPDL_INDEX is |
| 2510 | used all over the place, needs to be fast, and needs to know the size of |
| 2511 | union specbinding. But only eval.c should access it. */ |
| 2512 | |
| 2513 | enum specbind_tag { |
| 2514 | SPECPDL_BACKTRACE, /* An element of the backtrace. */ |
| 2515 | SPECPDL_LET, /* A plain and simple dynamic let-binding. */ |
| 2516 | /* Tags greater than SPECPDL_LET must be "subkinds" of LET. */ |
| 2517 | SPECPDL_LET_LOCAL, /* A buffer-local let-binding. */ |
| 2518 | SPECPDL_LET_DEFAULT /* A global binding for a localized var. */ |
| 2519 | }; |
| 2520 | |
| 2521 | union specbinding |
| 2522 | { |
| 2523 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2524 | struct { |
| 2525 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2526 | } frame; |
| 2527 | struct { |
| 2528 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2529 | bool wind_explicitly; |
| 2530 | void (*func) (Lisp_Object); |
| 2531 | Lisp_Object arg; |
| 2532 | } unwind; |
| 2533 | struct { |
| 2534 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2535 | bool wind_explicitly; |
| 2536 | void (*func) (void *); |
| 2537 | void *arg; |
| 2538 | } unwind_ptr; |
| 2539 | struct { |
| 2540 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2541 | bool wind_explicitly; |
| 2542 | void (*func) (int); |
| 2543 | int arg; |
| 2544 | } unwind_int; |
| 2545 | struct { |
| 2546 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2547 | bool wind_explicitly; |
| 2548 | void (*func) (void); |
| 2549 | } unwind_void; |
| 2550 | struct { |
| 2551 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2552 | /* `where' is not used in the case of SPECPDL_LET. */ |
| 2553 | Lisp_Object symbol, old_value, where; |
| 2554 | } let; |
| 2555 | struct { |
| 2556 | ENUM_BF (specbind_tag) kind : CHAR_BIT; |
| 2557 | bool_bf debug_on_exit : 1; |
| 2558 | Lisp_Object function; |
| 2559 | Lisp_Object *args; |
| 2560 | ptrdiff_t nargs; |
| 2561 | } bt; |
| 2562 | }; |
| 2563 | |
| 2564 | extern union specbinding *specpdl; |
| 2565 | extern union specbinding *specpdl_ptr; |
| 2566 | extern ptrdiff_t specpdl_size; |
| 2567 | |
| 2568 | INLINE ptrdiff_t |
| 2569 | SPECPDL_INDEX (void) |
| 2570 | { |
| 2571 | return specpdl_ptr - specpdl; |
| 2572 | } |
| 2573 | |
| 2574 | /* This structure helps implement the `catch/throw' and `condition-case/signal' |
| 2575 | control structures. A struct handler contains all the information needed to |
| 2576 | restore the state of the interpreter after a non-local jump. |
| 2577 | |
| 2578 | handler structures are chained together in a doubly linked list; the `next' |
| 2579 | member points to the next outer catchtag and the `nextfree' member points in |
| 2580 | the other direction to the next inner element (which is typically the next |
| 2581 | free element since we mostly use it on the deepest handler). |
| 2582 | |
| 2583 | A call like (throw TAG VAL) searches for a catchtag whose `tag_or_ch' |
| 2584 | member is TAG, and then unbinds to it. The `val' member is used to |
| 2585 | hold VAL while the stack is unwound; `val' is returned as the value |
| 2586 | of the catch form. |
| 2587 | |
| 2588 | All the other members are concerned with restoring the interpreter |
| 2589 | state. |
| 2590 | |
| 2591 | Members are volatile if their values need to survive _longjmp when |
| 2592 | a 'struct handler' is a local variable. */ |
| 2593 | |
| 2594 | enum handlertype { CATCHER, CONDITION_CASE }; |
| 2595 | |
| 2596 | struct handler |
| 2597 | { |
| 2598 | enum handlertype type; |
| 2599 | Lisp_Object ptag; |
| 2600 | Lisp_Object tag_or_ch; |
| 2601 | Lisp_Object val; |
| 2602 | Lisp_Object var; |
| 2603 | Lisp_Object body; |
| 2604 | struct handler *next; |
| 2605 | EMACS_INT lisp_eval_depth; |
| 2606 | int interrupt_input_blocked; |
| 2607 | }; |
| 2608 | |
| 2609 | extern Lisp_Object memory_signal_data; |
| 2610 | |
| 2611 | /* Check quit-flag and quit if it is non-nil. |
| 2612 | Typing C-g does not directly cause a quit; it only sets Vquit_flag. |
| 2613 | So the program needs to do QUIT at times when it is safe to quit. |
| 2614 | Every loop that might run for a long time or might not exit |
| 2615 | ought to do QUIT at least once, at a safe place. |
| 2616 | Unless that is impossible, of course. |
| 2617 | But it is very desirable to avoid creating loops where QUIT is impossible. |
| 2618 | |
| 2619 | Exception: if you set immediate_quit to true, |
| 2620 | then the handler that responds to the C-g does the quit itself. |
| 2621 | This is a good thing to do around a loop that has no side effects |
| 2622 | and (in particular) cannot call arbitrary Lisp code. |
| 2623 | |
| 2624 | If quit-flag is set to `kill-emacs' the SIGINT handler has received |
| 2625 | a request to exit Emacs when it is safe to do. */ |
| 2626 | |
| 2627 | extern void process_pending_signals (void); |
| 2628 | extern bool volatile pending_signals; |
| 2629 | |
| 2630 | extern void process_quit_flag (void); |
| 2631 | #define QUIT \ |
| 2632 | do { \ |
| 2633 | if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \ |
| 2634 | process_quit_flag (); \ |
| 2635 | else if (pending_signals) \ |
| 2636 | process_pending_signals (); \ |
| 2637 | } while (false) |
| 2638 | |
| 2639 | |
| 2640 | /* True if ought to quit now. */ |
| 2641 | |
| 2642 | #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) |
| 2643 | \f |
| 2644 | extern Lisp_Object Vascii_downcase_table; |
| 2645 | extern Lisp_Object Vascii_canon_table; |
| 2646 | \f |
| 2647 | /* Structure for recording stack slots that need marking. */ |
| 2648 | |
| 2649 | /* This is a chain of structures, each of which points at a Lisp_Object |
| 2650 | variable whose value should be marked in garbage collection. |
| 2651 | Normally every link of the chain is an automatic variable of a function, |
| 2652 | and its `val' points to some argument or local variable of the function. |
| 2653 | On exit to the function, the chain is set back to the value it had on entry. |
| 2654 | This way, no link remains in the chain when the stack frame containing the |
| 2655 | link disappears. |
| 2656 | |
| 2657 | Every function that can call Feval must protect in this fashion all |
| 2658 | Lisp_Object variables whose contents will be used again. */ |
| 2659 | |
| 2660 | extern struct gcpro *gcprolist; |
| 2661 | |
| 2662 | struct gcpro |
| 2663 | { |
| 2664 | struct gcpro *next; |
| 2665 | |
| 2666 | /* Address of first protected variable. */ |
| 2667 | volatile Lisp_Object *var; |
| 2668 | |
| 2669 | /* Number of consecutive protected variables. */ |
| 2670 | ptrdiff_t nvars; |
| 2671 | |
| 2672 | #ifdef DEBUG_GCPRO |
| 2673 | int level; |
| 2674 | #endif |
| 2675 | }; |
| 2676 | |
| 2677 | /* Do something silly with gcproN vars just so gcc shuts up. */ |
| 2678 | /* You get warnings from MIPSPro... */ |
| 2679 | |
| 2680 | #define GCPRO1(varname) ((void) gcpro1) |
| 2681 | #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1) |
| 2682 | #define GCPRO3(varname1, varname2, varname3) \ |
| 2683 | ((void) gcpro3, (void) gcpro2, (void) gcpro1) |
| 2684 | #define GCPRO4(varname1, varname2, varname3, varname4) \ |
| 2685 | ((void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) |
| 2686 | #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \ |
| 2687 | ((void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, (void) gcpro1) |
| 2688 | #define GCPRO6(varname1, varname2, varname3, varname4, varname5, varname6) \ |
| 2689 | ((void) gcpro6, (void) gcpro5, (void) gcpro4, (void) gcpro3, (void) gcpro2, \ |
| 2690 | (void) gcpro1) |
| 2691 | #define GCPRO7(a, b, c, d, e, f, g) (GCPRO6 (a, b, c, d, e, f), (void) gcpro7) |
| 2692 | #define UNGCPRO ((void) 0) |
| 2693 | |
| 2694 | /* Evaluate expr, UNGCPRO, and then return the value of expr. */ |
| 2695 | #define RETURN_UNGCPRO(expr) \ |
| 2696 | do \ |
| 2697 | { \ |
| 2698 | Lisp_Object ret_ungc_val; \ |
| 2699 | ret_ungc_val = (expr); \ |
| 2700 | UNGCPRO; \ |
| 2701 | return ret_ungc_val; \ |
| 2702 | } \ |
| 2703 | while (false) |
| 2704 | |
| 2705 | /* Call staticpro (&var) to protect static variable `var'. */ |
| 2706 | |
| 2707 | void staticpro (Lisp_Object *); |
| 2708 | \f |
| 2709 | /* Declare a Lisp-callable function. The MAXARGS parameter has the same |
| 2710 | meaning as in the DEFUN macro, and is used to construct a prototype. */ |
| 2711 | /* We can use the same trick as in the DEFUN macro to generate the |
| 2712 | appropriate prototype. */ |
| 2713 | #define EXFUN(fnname, maxargs) \ |
| 2714 | extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs |
| 2715 | |
| 2716 | #include "globals.h" |
| 2717 | |
| 2718 | /* Forward declarations for prototypes. */ |
| 2719 | struct window; |
| 2720 | struct frame; |
| 2721 | |
| 2722 | /* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET. */ |
| 2723 | |
| 2724 | INLINE void |
| 2725 | vcopy (Lisp_Object v, ptrdiff_t offset, Lisp_Object *args, ptrdiff_t count) |
| 2726 | { |
| 2727 | eassert (0 <= offset && 0 <= count && offset + count <= ASIZE (v)); |
| 2728 | memcpy (XVECTOR (v)->contents + offset, args, count * sizeof *args); |
| 2729 | } |
| 2730 | |
| 2731 | /* Functions to modify hash tables. */ |
| 2732 | |
| 2733 | INLINE void |
| 2734 | set_hash_key_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) |
| 2735 | { |
| 2736 | gc_aset (h->key_and_value, 2 * idx, val); |
| 2737 | } |
| 2738 | |
| 2739 | INLINE void |
| 2740 | set_hash_value_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val) |
| 2741 | { |
| 2742 | gc_aset (h->key_and_value, 2 * idx + 1, val); |
| 2743 | } |
| 2744 | |
| 2745 | /* Use these functions to set Lisp_Object |
| 2746 | or pointer slots of struct Lisp_Symbol. */ |
| 2747 | |
| 2748 | INLINE void |
| 2749 | set_symbol_function (Lisp_Object sym, Lisp_Object function) |
| 2750 | { |
| 2751 | scm_call_2 (scm_c_public_ref ("language elisp runtime", "set-symbol-function!"), |
| 2752 | sym, function); |
| 2753 | } |
| 2754 | |
| 2755 | INLINE Lisp_Object |
| 2756 | symbol_plist (Lisp_Object sym) |
| 2757 | { |
| 2758 | return scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-plist"), |
| 2759 | sym); |
| 2760 | } |
| 2761 | |
| 2762 | INLINE void |
| 2763 | set_symbol_plist (Lisp_Object sym, Lisp_Object plist) |
| 2764 | { |
| 2765 | scm_call_2 (scm_c_public_ref ("language elisp runtime", "set-symbol-plist!"), |
| 2766 | sym, plist); |
| 2767 | } |
| 2768 | |
| 2769 | /* Buffer-local (also frame-local) variable access functions. */ |
| 2770 | |
| 2771 | INLINE int |
| 2772 | blv_found (struct Lisp_Buffer_Local_Value *blv) |
| 2773 | { |
| 2774 | eassert (blv->found == !EQ (blv->defcell, blv->valcell)); |
| 2775 | return blv->found; |
| 2776 | } |
| 2777 | |
| 2778 | /* Set overlay's property list. */ |
| 2779 | |
| 2780 | INLINE void |
| 2781 | set_overlay_plist (Lisp_Object overlay, Lisp_Object plist) |
| 2782 | { |
| 2783 | XOVERLAY (overlay)->plist = plist; |
| 2784 | } |
| 2785 | |
| 2786 | /* Get text properties of S. */ |
| 2787 | |
| 2788 | INLINE INTERVAL |
| 2789 | string_intervals (Lisp_Object s) |
| 2790 | { |
| 2791 | return XSTRING (s)->intervals; |
| 2792 | } |
| 2793 | |
| 2794 | /* Set text properties of S to I. */ |
| 2795 | |
| 2796 | INLINE void |
| 2797 | set_string_intervals (Lisp_Object s, INTERVAL i) |
| 2798 | { |
| 2799 | XSTRING (s)->intervals = i; |
| 2800 | } |
| 2801 | |
| 2802 | /* Set a Lisp slot in TABLE to VAL. Most code should use this instead |
| 2803 | of setting slots directly. */ |
| 2804 | |
| 2805 | INLINE void |
| 2806 | set_char_table_defalt (Lisp_Object table, Lisp_Object val) |
| 2807 | { |
| 2808 | XCHAR_TABLE (table)->defalt = val; |
| 2809 | } |
| 2810 | INLINE void |
| 2811 | set_char_table_purpose (Lisp_Object table, Lisp_Object val) |
| 2812 | { |
| 2813 | XCHAR_TABLE (table)->purpose = val; |
| 2814 | } |
| 2815 | |
| 2816 | /* Set different slots in (sub)character tables. */ |
| 2817 | |
| 2818 | INLINE void |
| 2819 | set_char_table_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
| 2820 | { |
| 2821 | eassert (0 <= idx && idx < CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table))); |
| 2822 | XCHAR_TABLE (table)->extras[idx] = val; |
| 2823 | } |
| 2824 | |
| 2825 | INLINE void |
| 2826 | set_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
| 2827 | { |
| 2828 | eassert (0 <= idx && idx < (1 << CHARTAB_SIZE_BITS_0)); |
| 2829 | XCHAR_TABLE (table)->contents[idx] = val; |
| 2830 | } |
| 2831 | |
| 2832 | INLINE void |
| 2833 | set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val) |
| 2834 | { |
| 2835 | XSUB_CHAR_TABLE (table)->contents[idx] = val; |
| 2836 | } |
| 2837 | |
| 2838 | /* Defined in data.c. */ |
| 2839 | extern Lisp_Object Qnil_, Qt_; |
| 2840 | extern Lisp_Object Qquote, Qunbound; |
| 2841 | extern Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; |
| 2842 | extern Lisp_Object Qerror, Qquit, Qargs_out_of_range; |
| 2843 | extern Lisp_Object Qvoid_variable, Qvoid_function; |
| 2844 | extern Lisp_Object Qinvalid_read_syntax; |
| 2845 | extern Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; |
| 2846 | extern Lisp_Object Quser_error, Qend_of_file, Qarith_error, Qmark_inactive; |
| 2847 | extern Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
| 2848 | extern Lisp_Object Qtext_read_only; |
| 2849 | extern Lisp_Object Qinteractive_form; |
| 2850 | extern Lisp_Object Qcircular_list; |
| 2851 | extern Lisp_Object Qsequencep; |
| 2852 | extern Lisp_Object Qchar_or_string_p, Qinteger_or_marker_p; |
| 2853 | extern Lisp_Object Qfboundp; |
| 2854 | extern Lisp_Object Qspecial_operator; |
| 2855 | |
| 2856 | extern Lisp_Object Qcdr; |
| 2857 | |
| 2858 | extern Lisp_Object Qrange_error, Qoverflow_error; |
| 2859 | |
| 2860 | extern Lisp_Object Qnumber_or_marker_p; |
| 2861 | |
| 2862 | extern Lisp_Object Qbuffer, Qinteger, Qsymbol; |
| 2863 | |
| 2864 | /* Defined in data.c. */ |
| 2865 | extern Lisp_Object indirect_function (Lisp_Object); |
| 2866 | extern Lisp_Object find_symbol_value (Lisp_Object); |
| 2867 | enum Arith_Comparison { |
| 2868 | ARITH_EQUAL, |
| 2869 | ARITH_NOTEQUAL, |
| 2870 | ARITH_LESS, |
| 2871 | ARITH_GRTR, |
| 2872 | ARITH_LESS_OR_EQUAL, |
| 2873 | ARITH_GRTR_OR_EQUAL |
| 2874 | }; |
| 2875 | extern Lisp_Object arithcompare (Lisp_Object num1, Lisp_Object num2, |
| 2876 | enum Arith_Comparison comparison); |
| 2877 | |
| 2878 | /* Convert the integer I to an Emacs representation, either the integer |
| 2879 | itself, or a cons of two or three integers, or if all else fails a float. |
| 2880 | I should not have side effects. */ |
| 2881 | #define INTEGER_TO_CONS(i) \ |
| 2882 | (! FIXNUM_OVERFLOW_P (i) \ |
| 2883 | ? make_number (i) \ |
| 2884 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16) \ |
| 2885 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16)) \ |
| 2886 | && FIXNUM_OVERFLOW_P ((i) >> 16)) \ |
| 2887 | ? Fcons (make_number ((i) >> 16), make_number ((i) & 0xffff)) \ |
| 2888 | : ! ((FIXNUM_OVERFLOW_P (INTMAX_MIN >> 16 >> 24) \ |
| 2889 | || FIXNUM_OVERFLOW_P (UINTMAX_MAX >> 16 >> 24)) \ |
| 2890 | && FIXNUM_OVERFLOW_P ((i) >> 16 >> 24)) \ |
| 2891 | ? Fcons (make_number ((i) >> 16 >> 24), \ |
| 2892 | Fcons (make_number ((i) >> 16 & 0xffffff), \ |
| 2893 | make_number ((i) & 0xffff))) \ |
| 2894 | : make_float (i)) |
| 2895 | |
| 2896 | /* Convert the Emacs representation CONS back to an integer of type |
| 2897 | TYPE, storing the result the variable VAR. Signal an error if CONS |
| 2898 | is not a valid representation or is out of range for TYPE. */ |
| 2899 | #define CONS_TO_INTEGER(cons, type, var) \ |
| 2900 | (TYPE_SIGNED (type) \ |
| 2901 | ? ((var) = cons_to_signed (cons, TYPE_MINIMUM (type), TYPE_MAXIMUM (type))) \ |
| 2902 | : ((var) = cons_to_unsigned (cons, TYPE_MAXIMUM (type)))) |
| 2903 | extern intmax_t cons_to_signed (Lisp_Object, intmax_t, intmax_t); |
| 2904 | extern uintmax_t cons_to_unsigned (Lisp_Object, uintmax_t); |
| 2905 | |
| 2906 | extern sym_t indirect_variable (sym_t ); |
| 2907 | extern _Noreturn void args_out_of_range (Lisp_Object, Lisp_Object); |
| 2908 | extern _Noreturn void args_out_of_range_3 (Lisp_Object, Lisp_Object, |
| 2909 | Lisp_Object); |
| 2910 | extern Lisp_Object do_symval_forwarding (union Lisp_Fwd *); |
| 2911 | extern void set_internal (Lisp_Object, Lisp_Object, Lisp_Object, bool); |
| 2912 | extern void syms_of_data (void); |
| 2913 | extern void swap_in_global_binding (sym_t ); |
| 2914 | |
| 2915 | /* Defined in cmds.c */ |
| 2916 | extern void syms_of_cmds (void); |
| 2917 | extern void keys_of_cmds (void); |
| 2918 | |
| 2919 | /* Defined in coding.c. */ |
| 2920 | extern Lisp_Object Qcharset; |
| 2921 | extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t, |
| 2922 | ptrdiff_t, bool, bool, Lisp_Object); |
| 2923 | extern void init_coding (void); |
| 2924 | extern void init_coding_once (void); |
| 2925 | extern void syms_of_coding (void); |
| 2926 | |
| 2927 | /* Defined in character.c. */ |
| 2928 | extern ptrdiff_t chars_in_text (const unsigned char *, ptrdiff_t); |
| 2929 | extern ptrdiff_t multibyte_chars_in_text (const unsigned char *, ptrdiff_t); |
| 2930 | extern void syms_of_character (void); |
| 2931 | |
| 2932 | /* Defined in charset.c. */ |
| 2933 | extern void init_charset (void); |
| 2934 | extern void init_charset_once (void); |
| 2935 | extern void syms_of_charset (void); |
| 2936 | /* Structure forward declarations. */ |
| 2937 | struct charset; |
| 2938 | |
| 2939 | /* Defined in syntax.c. */ |
| 2940 | extern void init_syntax_once (void); |
| 2941 | extern void syms_of_syntax (void); |
| 2942 | |
| 2943 | /* Defined in fns.c. */ |
| 2944 | extern Lisp_Object QCrehash_size, QCrehash_threshold; |
| 2945 | enum { NEXT_ALMOST_PRIME_LIMIT = 11 }; |
| 2946 | extern EMACS_INT next_almost_prime (EMACS_INT) ATTRIBUTE_CONST; |
| 2947 | extern Lisp_Object larger_vector (Lisp_Object, ptrdiff_t, ptrdiff_t); |
| 2948 | extern void sweep_weak_hash_tables (void); |
| 2949 | extern Lisp_Object Qcursor_in_echo_area; |
| 2950 | extern Lisp_Object Qstring_lessp; |
| 2951 | extern Lisp_Object QCsize, QCtest, QCweakness, Qequal, Qeq; |
| 2952 | EMACS_UINT hash_string (char const *, ptrdiff_t); |
| 2953 | EMACS_UINT sxhash (Lisp_Object, int); |
| 2954 | Lisp_Object make_hash_table (struct hash_table_test, Lisp_Object, Lisp_Object, |
| 2955 | Lisp_Object, Lisp_Object); |
| 2956 | ptrdiff_t hash_lookup (struct Lisp_Hash_Table *, Lisp_Object, EMACS_UINT *); |
| 2957 | ptrdiff_t hash_put (struct Lisp_Hash_Table *, Lisp_Object, Lisp_Object, |
| 2958 | EMACS_UINT); |
| 2959 | extern struct hash_table_test hashtest_eql, hashtest_equal; |
| 2960 | extern void validate_subarray (Lisp_Object, Lisp_Object, Lisp_Object, |
| 2961 | ptrdiff_t, ptrdiff_t *, ptrdiff_t *); |
| 2962 | extern Lisp_Object substring_both (Lisp_Object, ptrdiff_t, ptrdiff_t, |
| 2963 | ptrdiff_t, ptrdiff_t); |
| 2964 | extern Lisp_Object merge (Lisp_Object, Lisp_Object, Lisp_Object); |
| 2965 | extern Lisp_Object do_yes_or_no_p (Lisp_Object); |
| 2966 | extern Lisp_Object concat2 (Lisp_Object, Lisp_Object); |
| 2967 | extern Lisp_Object concat3 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 2968 | extern Lisp_Object nconc2 (Lisp_Object, Lisp_Object); |
| 2969 | extern Lisp_Object assq_no_quit (Lisp_Object, Lisp_Object); |
| 2970 | extern Lisp_Object assoc_no_quit (Lisp_Object, Lisp_Object); |
| 2971 | extern void clear_string_char_byte_cache (void); |
| 2972 | extern ptrdiff_t string_char_to_byte (Lisp_Object, ptrdiff_t); |
| 2973 | extern ptrdiff_t string_byte_to_char (Lisp_Object, ptrdiff_t); |
| 2974 | extern Lisp_Object string_to_multibyte (Lisp_Object); |
| 2975 | extern Lisp_Object string_make_unibyte (Lisp_Object); |
| 2976 | extern void init_fns_once (void); |
| 2977 | extern void syms_of_fns (void); |
| 2978 | |
| 2979 | /* Defined in floatfns.c. */ |
| 2980 | extern void syms_of_floatfns (void); |
| 2981 | extern Lisp_Object fmod_float (Lisp_Object x, Lisp_Object y); |
| 2982 | |
| 2983 | /* Defined in fringe.c. */ |
| 2984 | extern void syms_of_fringe (void); |
| 2985 | extern void init_fringe (void); |
| 2986 | #ifdef HAVE_WINDOW_SYSTEM |
| 2987 | extern void mark_fringe_data (void); |
| 2988 | extern void init_fringe_once (void); |
| 2989 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 2990 | |
| 2991 | /* Defined in image.c. */ |
| 2992 | extern Lisp_Object QCascent, QCmargin, QCrelief; |
| 2993 | extern Lisp_Object QCconversion; |
| 2994 | extern int x_bitmap_mask (struct frame *, ptrdiff_t); |
| 2995 | extern void reset_image_types (void); |
| 2996 | extern void syms_of_image (void); |
| 2997 | |
| 2998 | /* Defined in insdel.c. */ |
| 2999 | extern Lisp_Object Qinhibit_modification_hooks; |
| 3000 | extern Lisp_Object Qregion_extract_function; |
| 3001 | extern void move_gap_both (ptrdiff_t, ptrdiff_t); |
| 3002 | extern _Noreturn void buffer_overflow (void); |
| 3003 | extern void make_gap (ptrdiff_t); |
| 3004 | extern void make_gap_1 (struct buffer *, ptrdiff_t); |
| 3005 | extern ptrdiff_t copy_text (const unsigned char *, unsigned char *, |
| 3006 | ptrdiff_t, bool, bool); |
| 3007 | extern int count_combining_before (const unsigned char *, |
| 3008 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
| 3009 | extern int count_combining_after (const unsigned char *, |
| 3010 | ptrdiff_t, ptrdiff_t, ptrdiff_t); |
| 3011 | extern void insert (const char *, ptrdiff_t); |
| 3012 | extern void insert_and_inherit (const char *, ptrdiff_t); |
| 3013 | extern void insert_1_both (const char *, ptrdiff_t, ptrdiff_t, |
| 3014 | bool, bool, bool); |
| 3015 | extern void insert_from_gap (ptrdiff_t, ptrdiff_t, bool text_at_gap_tail); |
| 3016 | extern void insert_from_string (Lisp_Object, ptrdiff_t, ptrdiff_t, |
| 3017 | ptrdiff_t, ptrdiff_t, bool); |
| 3018 | extern void insert_from_buffer (struct buffer *, ptrdiff_t, ptrdiff_t, bool); |
| 3019 | extern void insert_char (int); |
| 3020 | extern void insert_string (const char *); |
| 3021 | extern void insert_before_markers (const char *, ptrdiff_t); |
| 3022 | extern void insert_before_markers_and_inherit (const char *, ptrdiff_t); |
| 3023 | extern void insert_from_string_before_markers (Lisp_Object, ptrdiff_t, |
| 3024 | ptrdiff_t, ptrdiff_t, |
| 3025 | ptrdiff_t, bool); |
| 3026 | extern void del_range (ptrdiff_t, ptrdiff_t); |
| 3027 | extern Lisp_Object del_range_1 (ptrdiff_t, ptrdiff_t, bool, bool); |
| 3028 | extern void del_range_byte (ptrdiff_t, ptrdiff_t, bool); |
| 3029 | extern void del_range_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, bool); |
| 3030 | extern Lisp_Object del_range_2 (ptrdiff_t, ptrdiff_t, |
| 3031 | ptrdiff_t, ptrdiff_t, bool); |
| 3032 | extern void modify_text (ptrdiff_t, ptrdiff_t); |
| 3033 | extern void prepare_to_modify_buffer (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
| 3034 | extern void prepare_to_modify_buffer_1 (ptrdiff_t, ptrdiff_t, ptrdiff_t *); |
| 3035 | extern void invalidate_buffer_caches (struct buffer *, ptrdiff_t, ptrdiff_t); |
| 3036 | extern void signal_after_change (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
| 3037 | extern void adjust_after_insert (ptrdiff_t, ptrdiff_t, ptrdiff_t, |
| 3038 | ptrdiff_t, ptrdiff_t); |
| 3039 | extern void adjust_markers_for_delete (ptrdiff_t, ptrdiff_t, |
| 3040 | ptrdiff_t, ptrdiff_t); |
| 3041 | extern void replace_range (ptrdiff_t, ptrdiff_t, Lisp_Object, bool, bool, bool); |
| 3042 | extern void replace_range_2 (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
| 3043 | const char *, ptrdiff_t, ptrdiff_t, bool); |
| 3044 | extern void syms_of_insdel (void); |
| 3045 | |
| 3046 | /* Defined in dispnew.c. */ |
| 3047 | #if (defined PROFILING \ |
| 3048 | && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__)) |
| 3049 | _Noreturn void __executable_start (void); |
| 3050 | #endif |
| 3051 | extern Lisp_Object Vwindow_system; |
| 3052 | extern Lisp_Object sit_for (Lisp_Object, bool, int); |
| 3053 | |
| 3054 | /* Defined in xdisp.c. */ |
| 3055 | extern Lisp_Object Qinhibit_point_motion_hooks; |
| 3056 | extern Lisp_Object Qinhibit_redisplay; |
| 3057 | extern Lisp_Object Qmenu_bar_update_hook; |
| 3058 | extern Lisp_Object Qwindow_scroll_functions; |
| 3059 | extern Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map; |
| 3060 | extern Lisp_Object Qtext, Qboth, Qboth_horiz, Qtext_image_horiz; |
| 3061 | extern Lisp_Object Qspace, Qcenter, QCalign_to; |
| 3062 | extern Lisp_Object Qbar, Qhbar, Qhollow; |
| 3063 | extern Lisp_Object Qleft_margin, Qright_margin; |
| 3064 | extern Lisp_Object QCdata, QCfile; |
| 3065 | extern Lisp_Object QCmap; |
| 3066 | extern Lisp_Object Qrisky_local_variable; |
| 3067 | extern bool noninteractive_need_newline; |
| 3068 | extern Lisp_Object echo_area_buffer[2]; |
| 3069 | extern void add_to_log (const char *, Lisp_Object, Lisp_Object); |
| 3070 | extern void check_message_stack (void); |
| 3071 | extern void setup_echo_area_for_printing (int); |
| 3072 | extern bool push_message (void); |
| 3073 | extern void pop_message_unwind (void); |
| 3074 | extern Lisp_Object restore_message_unwind (Lisp_Object); |
| 3075 | extern void restore_message (void); |
| 3076 | extern Lisp_Object current_message (void); |
| 3077 | extern void clear_message (bool, bool); |
| 3078 | extern void message (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
| 3079 | extern void message1 (const char *); |
| 3080 | extern void message1_nolog (const char *); |
| 3081 | extern void message3 (Lisp_Object); |
| 3082 | extern void message3_nolog (Lisp_Object); |
| 3083 | extern void message_dolog (const char *, ptrdiff_t, bool, bool); |
| 3084 | extern void message_with_string (const char *, Lisp_Object, int); |
| 3085 | extern void message_log_maybe_newline (void); |
| 3086 | extern void update_echo_area (void); |
| 3087 | extern void truncate_echo_area (ptrdiff_t); |
| 3088 | extern void redisplay (void); |
| 3089 | |
| 3090 | void set_frame_cursor_types (struct frame *, Lisp_Object); |
| 3091 | extern void syms_of_xdisp (void); |
| 3092 | extern void init_xdisp (void); |
| 3093 | extern Lisp_Object safe_eval (Lisp_Object); |
| 3094 | extern int pos_visible_p (struct window *, ptrdiff_t, int *, |
| 3095 | int *, int *, int *, int *, int *); |
| 3096 | |
| 3097 | /* Defined in xsettings.c. */ |
| 3098 | extern void syms_of_xsettings (void); |
| 3099 | |
| 3100 | /* Defined in vm-limit.c. */ |
| 3101 | extern void memory_warnings (void *, void (*warnfun) (const char *)); |
| 3102 | |
| 3103 | /* Defined in alloc.c. */ |
| 3104 | extern void check_pure_size (void); |
| 3105 | extern void free_misc (Lisp_Object); |
| 3106 | extern void allocate_string_data (Lisp_Object, EMACS_INT, EMACS_INT); |
| 3107 | extern void malloc_warning (const char *); |
| 3108 | extern _Noreturn void memory_full (size_t); |
| 3109 | extern _Noreturn void buffer_memory_full (ptrdiff_t); |
| 3110 | #if defined REL_ALLOC && !defined SYSTEM_MALLOC |
| 3111 | extern void refill_memory_reserve (void); |
| 3112 | #endif |
| 3113 | extern const char *pending_malloc_warning; |
| 3114 | extern Lisp_Object zero_vector; |
| 3115 | extern Lisp_Object list1 (Lisp_Object); |
| 3116 | extern Lisp_Object list2 (Lisp_Object, Lisp_Object); |
| 3117 | extern Lisp_Object list3 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3118 | extern Lisp_Object list4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3119 | extern Lisp_Object list5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, |
| 3120 | Lisp_Object); |
| 3121 | enum constype {CONSTYPE_HEAP, CONSTYPE_PURE}; |
| 3122 | extern Lisp_Object listn (enum constype, ptrdiff_t, Lisp_Object, ...); |
| 3123 | |
| 3124 | /* Build a frequently used 2/3/4-integer lists. */ |
| 3125 | |
| 3126 | INLINE Lisp_Object |
| 3127 | list2i (EMACS_INT x, EMACS_INT y) |
| 3128 | { |
| 3129 | return list2 (make_number (x), make_number (y)); |
| 3130 | } |
| 3131 | |
| 3132 | INLINE Lisp_Object |
| 3133 | list3i (EMACS_INT x, EMACS_INT y, EMACS_INT w) |
| 3134 | { |
| 3135 | return list3 (make_number (x), make_number (y), make_number (w)); |
| 3136 | } |
| 3137 | |
| 3138 | INLINE Lisp_Object |
| 3139 | list4i (EMACS_INT x, EMACS_INT y, EMACS_INT w, EMACS_INT h) |
| 3140 | { |
| 3141 | return list4 (make_number (x), make_number (y), |
| 3142 | make_number (w), make_number (h)); |
| 3143 | } |
| 3144 | |
| 3145 | extern Lisp_Object make_uninit_bool_vector (EMACS_INT); |
| 3146 | extern Lisp_Object bool_vector_fill (Lisp_Object, Lisp_Object); |
| 3147 | extern _Noreturn void string_overflow (void); |
| 3148 | extern Lisp_Object make_string (const char *, ptrdiff_t); |
| 3149 | extern Lisp_Object make_formatted_string (char *, const char *, ...) |
| 3150 | ATTRIBUTE_FORMAT_PRINTF (2, 3); |
| 3151 | extern Lisp_Object make_unibyte_string (const char *, ptrdiff_t); |
| 3152 | |
| 3153 | /* Make unibyte string from C string when the length isn't known. */ |
| 3154 | |
| 3155 | INLINE Lisp_Object |
| 3156 | build_unibyte_string (const char *str) |
| 3157 | { |
| 3158 | return make_unibyte_string (str, strlen (str)); |
| 3159 | } |
| 3160 | |
| 3161 | extern Lisp_Object make_multibyte_string (const char *, ptrdiff_t, ptrdiff_t); |
| 3162 | extern Lisp_Object make_event_array (ptrdiff_t, Lisp_Object *); |
| 3163 | extern Lisp_Object make_uninit_string (EMACS_INT); |
| 3164 | extern Lisp_Object make_uninit_multibyte_string (EMACS_INT, EMACS_INT); |
| 3165 | extern Lisp_Object make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t); |
| 3166 | extern Lisp_Object make_specified_string (const char *, |
| 3167 | ptrdiff_t, ptrdiff_t, bool); |
| 3168 | extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool); |
| 3169 | extern Lisp_Object make_pure_c_string (const char *, ptrdiff_t); |
| 3170 | |
| 3171 | /* Make a string allocated in pure space, use STR as string data. */ |
| 3172 | |
| 3173 | INLINE Lisp_Object |
| 3174 | build_pure_c_string (const char *str) |
| 3175 | { |
| 3176 | return make_pure_c_string (str, strlen (str)); |
| 3177 | } |
| 3178 | |
| 3179 | /* Make a string from the data at STR, treating it as multibyte if the |
| 3180 | data warrants. */ |
| 3181 | |
| 3182 | INLINE Lisp_Object |
| 3183 | build_string (const char *str) |
| 3184 | { |
| 3185 | return make_string (str, strlen (str)); |
| 3186 | } |
| 3187 | |
| 3188 | extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object); |
| 3189 | extern void make_byte_code (struct Lisp_Vector *); |
| 3190 | extern Lisp_Object Qchar_table_extra_slots; |
| 3191 | extern struct Lisp_Vector *allocate_vector (EMACS_INT); |
| 3192 | |
| 3193 | /* Make an uninitialized vector for SIZE objects. NOTE: you must |
| 3194 | be sure that GC cannot happen until the vector is completely |
| 3195 | initialized. E.g. the following code is likely to crash: |
| 3196 | |
| 3197 | v = make_uninit_vector (3); |
| 3198 | ASET (v, 0, obj0); |
| 3199 | ASET (v, 1, Ffunction_can_gc ()); |
| 3200 | ASET (v, 2, obj1); */ |
| 3201 | |
| 3202 | INLINE Lisp_Object |
| 3203 | make_uninit_vector (ptrdiff_t size) |
| 3204 | { |
| 3205 | Lisp_Object v; |
| 3206 | struct Lisp_Vector *p; |
| 3207 | |
| 3208 | p = allocate_vector (size); |
| 3209 | XSETVECTOR (v, p); |
| 3210 | return v; |
| 3211 | } |
| 3212 | |
| 3213 | extern struct Lisp_Vector *allocate_pseudovector (int, int, enum pvec_type); |
| 3214 | #define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \ |
| 3215 | ((typ*) \ |
| 3216 | allocate_pseudovector \ |
| 3217 | (VECSIZE (typ), PSEUDOVECSIZE (typ, field), tag)) |
| 3218 | extern struct Lisp_Hash_Table *allocate_hash_table (void); |
| 3219 | extern struct window *allocate_window (void); |
| 3220 | extern struct frame *allocate_frame (void); |
| 3221 | extern struct Lisp_Process *allocate_process (void); |
| 3222 | extern struct terminal *allocate_terminal (void); |
| 3223 | extern Lisp_Object make_float (double); |
| 3224 | extern void display_malloc_warning (void); |
| 3225 | extern Lisp_Object make_save_int_int_int (ptrdiff_t, ptrdiff_t, ptrdiff_t); |
| 3226 | extern Lisp_Object make_save_obj_obj_obj_obj (Lisp_Object, Lisp_Object, |
| 3227 | Lisp_Object, Lisp_Object); |
| 3228 | extern Lisp_Object make_save_ptr (void *); |
| 3229 | extern Lisp_Object make_save_ptr_int (void *, ptrdiff_t); |
| 3230 | extern Lisp_Object make_save_ptr_ptr (void *, void *); |
| 3231 | extern Lisp_Object make_save_funcptr_ptr_obj (void (*) (void), void *, |
| 3232 | Lisp_Object); |
| 3233 | extern Lisp_Object make_save_memory (Lisp_Object *, ptrdiff_t); |
| 3234 | extern void free_save_value (Lisp_Object); |
| 3235 | extern Lisp_Object build_overlay (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3236 | extern void init_alloc_once (void); |
| 3237 | extern void init_alloc (void); |
| 3238 | extern void syms_of_alloc (void); |
| 3239 | extern struct buffer * allocate_buffer (void); |
| 3240 | extern int valid_lisp_object_p (Lisp_Object); |
| 3241 | extern int relocatable_string_data_p (const char *); |
| 3242 | |
| 3243 | #ifdef REL_ALLOC |
| 3244 | /* Defined in ralloc.c. */ |
| 3245 | extern void *r_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); |
| 3246 | extern void r_alloc_free (void **); |
| 3247 | extern void *r_re_alloc (void **, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); |
| 3248 | extern void r_alloc_reset_variable (void **, void **); |
| 3249 | extern void r_alloc_inhibit_buffer_relocation (int); |
| 3250 | #endif |
| 3251 | |
| 3252 | /* Defined in chartab.c. */ |
| 3253 | extern Lisp_Object copy_char_table (Lisp_Object); |
| 3254 | extern Lisp_Object char_table_ref_and_range (Lisp_Object, int, |
| 3255 | int *, int *); |
| 3256 | extern void char_table_set_range (Lisp_Object, int, int, Lisp_Object); |
| 3257 | extern void map_char_table (void (*) (Lisp_Object, Lisp_Object, |
| 3258 | Lisp_Object), |
| 3259 | Lisp_Object, Lisp_Object, Lisp_Object); |
| 3260 | extern void map_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object), |
| 3261 | Lisp_Object, Lisp_Object, |
| 3262 | Lisp_Object, struct charset *, |
| 3263 | unsigned, unsigned); |
| 3264 | extern Lisp_Object uniprop_table (Lisp_Object); |
| 3265 | extern void syms_of_chartab (void); |
| 3266 | |
| 3267 | /* Defined in print.c. */ |
| 3268 | extern Lisp_Object Vprin1_to_string_buffer; |
| 3269 | extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE; |
| 3270 | extern Lisp_Object Qstandard_output; |
| 3271 | extern Lisp_Object Qexternal_debugging_output; |
| 3272 | extern void temp_output_buffer_setup (const char *); |
| 3273 | extern int print_level; |
| 3274 | extern Lisp_Object Qprint_escape_newlines; |
| 3275 | extern void write_string (const char *, int); |
| 3276 | extern void print_error_message (Lisp_Object, Lisp_Object, const char *, |
| 3277 | Lisp_Object); |
| 3278 | extern Lisp_Object internal_with_output_to_temp_buffer |
| 3279 | (const char *, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
| 3280 | #define FLOAT_TO_STRING_BUFSIZE 350 |
| 3281 | extern int float_to_string (char *, double); |
| 3282 | extern void init_print_once (void); |
| 3283 | extern void syms_of_print (void); |
| 3284 | |
| 3285 | /* Defined in doprnt.c. */ |
| 3286 | extern ptrdiff_t doprnt (char *, ptrdiff_t, const char *, const char *, |
| 3287 | va_list); |
| 3288 | extern ptrdiff_t esprintf (char *, char const *, ...) |
| 3289 | ATTRIBUTE_FORMAT_PRINTF (2, 3); |
| 3290 | extern ptrdiff_t exprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, |
| 3291 | char const *, ...) |
| 3292 | ATTRIBUTE_FORMAT_PRINTF (5, 6); |
| 3293 | extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t, |
| 3294 | char const *, va_list) |
| 3295 | ATTRIBUTE_FORMAT_PRINTF (5, 0); |
| 3296 | |
| 3297 | /* Defined in lread.c. */ |
| 3298 | extern Lisp_Object Qvariable_documentation, Qstandard_input; |
| 3299 | extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction; |
| 3300 | extern Lisp_Object Qlexical_binding; |
| 3301 | extern Lisp_Object check_obarray (Lisp_Object); |
| 3302 | extern Lisp_Object intern_1 (const char *, ptrdiff_t); |
| 3303 | extern Lisp_Object intern_c_string_1 (const char *, ptrdiff_t); |
| 3304 | extern Lisp_Object obhash (Lisp_Object); |
| 3305 | INLINE void |
| 3306 | LOADHIST_ATTACH (Lisp_Object x) |
| 3307 | { |
| 3308 | if (initialized) |
| 3309 | Vcurrent_load_list = Fcons (x, Vcurrent_load_list); |
| 3310 | } |
| 3311 | extern int openp (Lisp_Object, Lisp_Object, Lisp_Object, |
| 3312 | Lisp_Object *, Lisp_Object, bool); |
| 3313 | extern Lisp_Object string_to_number (char const *, int, bool); |
| 3314 | extern void map_obarray (Lisp_Object, void (*) (Lisp_Object, Lisp_Object), |
| 3315 | Lisp_Object); |
| 3316 | extern void dir_warning (const char *, Lisp_Object); |
| 3317 | extern void init_obarray (void); |
| 3318 | extern void init_lread (void); |
| 3319 | extern void syms_of_lread (void); |
| 3320 | |
| 3321 | INLINE Lisp_Object |
| 3322 | intern (const char *str) |
| 3323 | { |
| 3324 | return intern_1 (str, strlen (str)); |
| 3325 | } |
| 3326 | |
| 3327 | INLINE Lisp_Object |
| 3328 | intern_c_string (const char *str) |
| 3329 | { |
| 3330 | return intern_c_string_1 (str, strlen (str)); |
| 3331 | } |
| 3332 | |
| 3333 | /* Defined in eval.c. */ |
| 3334 | extern Lisp_Object Qexit, Qinteractive, Qcommandp, Qmacro; |
| 3335 | extern Lisp_Object Qinhibit_quit, Qinternal_interpreter_environment, Qclosure; |
| 3336 | extern Lisp_Object Qand_rest; |
| 3337 | extern Lisp_Object Vautoload_queue; |
| 3338 | extern Lisp_Object Vsignaling_function; |
| 3339 | extern Lisp_Object inhibit_lisp_code; |
| 3340 | extern struct handler *handlerlist; |
| 3341 | |
| 3342 | /* To run a normal hook, use the appropriate function from the list below. |
| 3343 | The calling convention: |
| 3344 | |
| 3345 | if (!NILP (Vrun_hooks)) |
| 3346 | call1 (Vrun_hooks, Qmy_funny_hook); |
| 3347 | |
| 3348 | should no longer be used. */ |
| 3349 | extern Lisp_Object Vrun_hooks; |
| 3350 | extern void run_hook_with_args_2 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3351 | extern Lisp_Object run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args, |
| 3352 | Lisp_Object (*funcall) |
| 3353 | (ptrdiff_t nargs, Lisp_Object *args)); |
| 3354 | extern _Noreturn void xsignal (Lisp_Object, Lisp_Object); |
| 3355 | extern _Noreturn void xsignal0 (Lisp_Object); |
| 3356 | extern _Noreturn void xsignal1 (Lisp_Object, Lisp_Object); |
| 3357 | extern _Noreturn void xsignal2 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3358 | extern _Noreturn void xsignal3 (Lisp_Object, Lisp_Object, Lisp_Object, |
| 3359 | Lisp_Object); |
| 3360 | extern _Noreturn void signal_error (const char *, Lisp_Object); |
| 3361 | extern Lisp_Object eval_sub (Lisp_Object form); |
| 3362 | extern Lisp_Object Ffuncall (ptrdiff_t nargs, Lisp_Object *args); |
| 3363 | extern Lisp_Object apply1 (Lisp_Object, Lisp_Object); |
| 3364 | extern Lisp_Object call0 (Lisp_Object); |
| 3365 | extern Lisp_Object call1 (Lisp_Object, Lisp_Object); |
| 3366 | extern Lisp_Object call2 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3367 | extern Lisp_Object call3 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3368 | extern Lisp_Object call4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3369 | extern Lisp_Object call5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3370 | extern Lisp_Object call6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3371 | extern Lisp_Object call7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object); |
| 3372 | extern Lisp_Object internal_catch (Lisp_Object, Lisp_Object (*) (Lisp_Object), Lisp_Object); |
| 3373 | extern Lisp_Object internal_lisp_condition_case (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3374 | extern Lisp_Object internal_condition_case (Lisp_Object (*) (void), Lisp_Object, Lisp_Object (*) (Lisp_Object)); |
| 3375 | extern Lisp_Object internal_condition_case_1 (Lisp_Object (*) (Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object)); |
| 3376 | extern Lisp_Object internal_condition_case_2 (Lisp_Object (*) (Lisp_Object, Lisp_Object), Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object (*) (Lisp_Object)); |
| 3377 | extern Lisp_Object internal_condition_case_n |
| 3378 | (Lisp_Object (*) (ptrdiff_t, Lisp_Object *), ptrdiff_t, Lisp_Object *, |
| 3379 | Lisp_Object, Lisp_Object (*) (Lisp_Object, ptrdiff_t, Lisp_Object *)); |
| 3380 | extern void specbind (Lisp_Object, Lisp_Object); |
| 3381 | extern void record_unwind_protect_1 (void (*) (Lisp_Object), Lisp_Object, bool); |
| 3382 | extern void record_unwind_protect (void (*) (Lisp_Object), Lisp_Object); |
| 3383 | extern void record_unwind_protect_ptr_1 (void (*) (void *), void *, bool); |
| 3384 | extern void record_unwind_protect_ptr (void (*) (void *), void *); |
| 3385 | extern void record_unwind_protect_int_1 (void (*) (int), int, bool); |
| 3386 | extern void record_unwind_protect_int (void (*) (int), int); |
| 3387 | extern void record_unwind_protect_void_1 (void (*) (void), bool); |
| 3388 | extern void record_unwind_protect_void (void (*) (void)); |
| 3389 | extern void dynwind_begin (void); |
| 3390 | extern void dynwind_end (void); |
| 3391 | extern _Noreturn void error (const char *, ...) ATTRIBUTE_FORMAT_PRINTF (1, 2); |
| 3392 | extern _Noreturn void verror (const char *, va_list) |
| 3393 | ATTRIBUTE_FORMAT_PRINTF (1, 0); |
| 3394 | extern void un_autoload (Lisp_Object); |
| 3395 | extern Lisp_Object call_debugger (Lisp_Object arg); |
| 3396 | extern void init_eval_once (void); |
| 3397 | extern Lisp_Object safe_call (ptrdiff_t, Lisp_Object, ...); |
| 3398 | extern Lisp_Object safe_call1 (Lisp_Object, Lisp_Object); |
| 3399 | extern Lisp_Object safe_call2 (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3400 | extern void init_eval (void); |
| 3401 | extern void syms_of_eval (void); |
| 3402 | extern void unwind_body (Lisp_Object); |
| 3403 | extern void record_in_backtrace (Lisp_Object function, |
| 3404 | Lisp_Object *args, ptrdiff_t nargs); |
| 3405 | extern void mark_specpdl (void); |
| 3406 | extern void get_backtrace (Lisp_Object array); |
| 3407 | Lisp_Object backtrace_top_function (void); |
| 3408 | extern bool let_shadows_buffer_binding_p (sym_t symbol); |
| 3409 | extern bool let_shadows_global_binding_p (Lisp_Object symbol); |
| 3410 | extern _Noreturn SCM abort_to_prompt (SCM, SCM); |
| 3411 | extern SCM call_with_prompt (SCM, SCM, SCM); |
| 3412 | extern SCM make_prompt_tag (void); |
| 3413 | |
| 3414 | |
| 3415 | /* Defined in editfns.c. */ |
| 3416 | extern Lisp_Object Qfield; |
| 3417 | extern void insert1 (Lisp_Object); |
| 3418 | extern Lisp_Object format2 (const char *, Lisp_Object, Lisp_Object); |
| 3419 | extern Lisp_Object save_excursion_save (void); |
| 3420 | extern Lisp_Object save_restriction_save (void); |
| 3421 | extern void save_excursion_restore (Lisp_Object); |
| 3422 | extern void save_restriction_restore (Lisp_Object); |
| 3423 | extern _Noreturn void time_overflow (void); |
| 3424 | extern Lisp_Object make_buffer_string (ptrdiff_t, ptrdiff_t, bool); |
| 3425 | extern Lisp_Object make_buffer_string_both (ptrdiff_t, ptrdiff_t, ptrdiff_t, |
| 3426 | ptrdiff_t, bool); |
| 3427 | extern void init_editfns (void); |
| 3428 | extern void syms_of_editfns (void); |
| 3429 | extern void set_time_zone_rule (const char *); |
| 3430 | |
| 3431 | /* Defined in buffer.c. */ |
| 3432 | extern bool mouse_face_overlay_overlaps (Lisp_Object); |
| 3433 | extern _Noreturn void nsberror (Lisp_Object); |
| 3434 | extern void adjust_overlays_for_insert (ptrdiff_t, ptrdiff_t); |
| 3435 | extern void adjust_overlays_for_delete (ptrdiff_t, ptrdiff_t); |
| 3436 | extern void fix_start_end_in_overlays (ptrdiff_t, ptrdiff_t); |
| 3437 | extern void report_overlay_modification (Lisp_Object, Lisp_Object, bool, |
| 3438 | Lisp_Object, Lisp_Object, Lisp_Object); |
| 3439 | extern bool overlay_touches_p (ptrdiff_t); |
| 3440 | extern Lisp_Object other_buffer_safely (Lisp_Object); |
| 3441 | extern Lisp_Object get_truename_buffer (Lisp_Object); |
| 3442 | extern void init_buffer_once (void); |
| 3443 | extern void init_buffer (int); |
| 3444 | extern void syms_of_buffer (void); |
| 3445 | extern void keys_of_buffer (void); |
| 3446 | |
| 3447 | /* Defined in marker.c. */ |
| 3448 | |
| 3449 | extern ptrdiff_t marker_position (Lisp_Object); |
| 3450 | extern ptrdiff_t marker_byte_position (Lisp_Object); |
| 3451 | extern void clear_charpos_cache (struct buffer *); |
| 3452 | extern ptrdiff_t buf_charpos_to_bytepos (struct buffer *, ptrdiff_t); |
| 3453 | extern ptrdiff_t buf_bytepos_to_charpos (struct buffer *, ptrdiff_t); |
| 3454 | extern void unchain_marker (struct Lisp_Marker *marker); |
| 3455 | extern Lisp_Object set_marker_restricted (Lisp_Object, Lisp_Object, Lisp_Object); |
| 3456 | extern Lisp_Object set_marker_both (Lisp_Object, Lisp_Object, ptrdiff_t, ptrdiff_t); |
| 3457 | extern Lisp_Object set_marker_restricted_both (Lisp_Object, Lisp_Object, |
| 3458 | ptrdiff_t, ptrdiff_t); |
| 3459 | extern Lisp_Object build_marker (struct buffer *, ptrdiff_t, ptrdiff_t); |
| 3460 | extern void syms_of_marker (void); |
| 3461 | |
| 3462 | /* Defined in fileio.c. */ |
| 3463 | |
| 3464 | extern Lisp_Object Qfile_error; |
| 3465 | extern Lisp_Object Qfile_notify_error; |
| 3466 | extern Lisp_Object Qfile_exists_p; |
| 3467 | extern Lisp_Object Qfile_directory_p; |
| 3468 | extern Lisp_Object Qinsert_file_contents; |
| 3469 | extern Lisp_Object Qfile_name_history; |
| 3470 | extern Lisp_Object expand_and_dir_to_file (Lisp_Object, Lisp_Object); |
| 3471 | extern Lisp_Object write_region (Lisp_Object, Lisp_Object, Lisp_Object, |
| 3472 | Lisp_Object, Lisp_Object, Lisp_Object, |
| 3473 | Lisp_Object, int); |
| 3474 | extern void close_file_unwind (int); |
| 3475 | extern void close_file_ptr_unwind (void *); |
| 3476 | extern void fclose_unwind (void *); |
| 3477 | extern void fclose_ptr_unwind (void *); |
| 3478 | extern void restore_point_unwind (Lisp_Object); |
| 3479 | extern _Noreturn void report_file_errno (const char *, Lisp_Object, int); |
| 3480 | extern _Noreturn void report_file_error (const char *, Lisp_Object); |
| 3481 | extern bool internal_delete_file (Lisp_Object); |
| 3482 | extern Lisp_Object emacs_readlinkat (int, const char *); |
| 3483 | extern bool file_directory_p (const char *); |
| 3484 | extern bool file_accessible_directory_p (const char *); |
| 3485 | extern void init_fileio (void); |
| 3486 | extern void syms_of_fileio (void); |
| 3487 | extern Lisp_Object make_temp_name (Lisp_Object, bool); |
| 3488 | extern Lisp_Object Qdelete_file; |
| 3489 | |
| 3490 | /* Defined in search.c. */ |
| 3491 | extern void shrink_regexp_cache (void); |
| 3492 | extern void restore_search_regs (void); |
| 3493 | extern void record_unwind_save_match_data (void); |
| 3494 | struct re_registers; |
| 3495 | extern struct re_pattern_buffer *compile_pattern (Lisp_Object, |
| 3496 | struct re_registers *, |
| 3497 | Lisp_Object, bool, bool); |
| 3498 | extern ptrdiff_t fast_string_match (Lisp_Object, Lisp_Object); |
| 3499 | extern ptrdiff_t fast_c_string_match_ignore_case (Lisp_Object, const char *, |
| 3500 | ptrdiff_t); |
| 3501 | extern ptrdiff_t fast_string_match_ignore_case (Lisp_Object, Lisp_Object); |
| 3502 | extern ptrdiff_t fast_looking_at (Lisp_Object, ptrdiff_t, ptrdiff_t, |
| 3503 | ptrdiff_t, ptrdiff_t, Lisp_Object); |
| 3504 | extern ptrdiff_t find_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
| 3505 | ptrdiff_t, ptrdiff_t *, ptrdiff_t *, bool); |
| 3506 | extern ptrdiff_t scan_newline (ptrdiff_t, ptrdiff_t, ptrdiff_t, ptrdiff_t, |
| 3507 | ptrdiff_t, bool); |
| 3508 | extern ptrdiff_t find_newline_no_quit (ptrdiff_t, ptrdiff_t, |
| 3509 | ptrdiff_t, ptrdiff_t *); |
| 3510 | extern ptrdiff_t find_before_next_newline (ptrdiff_t, ptrdiff_t, |
| 3511 | ptrdiff_t, ptrdiff_t *); |
| 3512 | extern void syms_of_search (void); |
| 3513 | extern void clear_regexp_cache (void); |
| 3514 | |
| 3515 | /* Defined in minibuf.c. */ |
| 3516 | |
| 3517 | extern Lisp_Object Qcompletion_ignore_case; |
| 3518 | extern Lisp_Object Vminibuffer_list; |
| 3519 | extern Lisp_Object last_minibuf_string; |
| 3520 | extern Lisp_Object get_minibuffer (EMACS_INT); |
| 3521 | extern void init_minibuf_once (void); |
| 3522 | extern void syms_of_minibuf (void); |
| 3523 | |
| 3524 | /* Defined in callint.c. */ |
| 3525 | |
| 3526 | extern Lisp_Object Qminus, Qplus; |
| 3527 | extern Lisp_Object Qprogn; |
| 3528 | extern Lisp_Object Qwhen; |
| 3529 | extern Lisp_Object Qmouse_leave_buffer_hook; |
| 3530 | extern void syms_of_callint (void); |
| 3531 | |
| 3532 | /* Defined in casefiddle.c. */ |
| 3533 | |
| 3534 | extern Lisp_Object Qidentity; |
| 3535 | extern void syms_of_casefiddle (void); |
| 3536 | extern void keys_of_casefiddle (void); |
| 3537 | |
| 3538 | /* Defined in casetab.c. */ |
| 3539 | |
| 3540 | extern void init_casetab_once (void); |
| 3541 | extern void syms_of_casetab (void); |
| 3542 | |
| 3543 | /* Defined in keyboard.c. */ |
| 3544 | |
| 3545 | extern Lisp_Object echo_message_buffer; |
| 3546 | extern struct kboard *echo_kboard; |
| 3547 | extern void cancel_echoing (void); |
| 3548 | extern Lisp_Object Qdisabled, QCfilter; |
| 3549 | extern Lisp_Object Qup, Qdown; |
| 3550 | extern Lisp_Object last_undo_boundary; |
| 3551 | extern bool input_pending; |
| 3552 | extern Lisp_Object menu_bar_items (Lisp_Object); |
| 3553 | extern Lisp_Object tool_bar_items (Lisp_Object, int *); |
| 3554 | extern void discard_mouse_events (void); |
| 3555 | #ifdef USABLE_SIGIO |
| 3556 | void handle_input_available_signal (int); |
| 3557 | #endif |
| 3558 | extern Lisp_Object pending_funcalls; |
| 3559 | extern bool detect_input_pending (void); |
| 3560 | extern bool detect_input_pending_ignore_squeezables (void); |
| 3561 | extern bool detect_input_pending_run_timers (bool); |
| 3562 | extern void safe_run_hooks (Lisp_Object); |
| 3563 | extern void cmd_error_internal (Lisp_Object, const char *); |
| 3564 | extern Lisp_Object command_loop_1 (void); |
| 3565 | extern Lisp_Object read_menu_command (void); |
| 3566 | extern Lisp_Object recursive_edit_1 (void); |
| 3567 | extern void record_auto_save (void); |
| 3568 | extern void force_auto_save_soon (void); |
| 3569 | extern void init_keyboard (void); |
| 3570 | extern void syms_of_keyboard (void); |
| 3571 | extern void keys_of_keyboard (void); |
| 3572 | |
| 3573 | /* Defined in indent.c. */ |
| 3574 | extern ptrdiff_t current_column (void); |
| 3575 | extern void invalidate_current_column (void); |
| 3576 | extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT); |
| 3577 | extern void syms_of_indent (void); |
| 3578 | |
| 3579 | /* Defined in frame.c. */ |
| 3580 | extern Lisp_Object Qonly, Qnone; |
| 3581 | extern void set_frame_param (struct frame *, Lisp_Object, Lisp_Object); |
| 3582 | extern void store_frame_param (struct frame *, Lisp_Object, Lisp_Object); |
| 3583 | extern void store_in_alist (Lisp_Object *, Lisp_Object, Lisp_Object); |
| 3584 | extern Lisp_Object do_switch_frame (Lisp_Object, int, int, Lisp_Object); |
| 3585 | extern Lisp_Object get_frame_param (struct frame *, Lisp_Object); |
| 3586 | extern void frames_discard_buffer (Lisp_Object); |
| 3587 | extern void syms_of_frame (void); |
| 3588 | |
| 3589 | /* Defined in emacs.c. */ |
| 3590 | extern char **initial_argv; |
| 3591 | extern int initial_argc; |
| 3592 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS) |
| 3593 | extern bool display_arg; |
| 3594 | #endif |
| 3595 | extern Lisp_Object decode_env_path (const char *, const char *, bool); |
| 3596 | extern Lisp_Object empty_unibyte_string, empty_multibyte_string; |
| 3597 | extern Lisp_Object Qfile_name_handler_alist; |
| 3598 | extern _Noreturn void terminate_due_to_signal (int, int); |
| 3599 | extern Lisp_Object Qkill_emacs; |
| 3600 | #ifdef WINDOWSNT |
| 3601 | extern Lisp_Object Vlibrary_cache; |
| 3602 | #endif |
| 3603 | #if HAVE_SETLOCALE |
| 3604 | void fixup_locale (void); |
| 3605 | void synchronize_system_messages_locale (void); |
| 3606 | void synchronize_system_time_locale (void); |
| 3607 | #else |
| 3608 | INLINE void fixup_locale (void) {} |
| 3609 | INLINE void synchronize_system_messages_locale (void) {} |
| 3610 | INLINE void synchronize_system_time_locale (void) {} |
| 3611 | #endif |
| 3612 | extern void shut_down_emacs (int, Lisp_Object); |
| 3613 | |
| 3614 | /* True means don't do interactive redisplay and don't change tty modes. */ |
| 3615 | extern bool noninteractive; |
| 3616 | |
| 3617 | /* True means remove site-lisp directories from load-path. */ |
| 3618 | extern bool no_site_lisp; |
| 3619 | |
| 3620 | /* Pipe used to send exit notification to the daemon parent at |
| 3621 | startup. */ |
| 3622 | extern int daemon_pipe[2]; |
| 3623 | #define IS_DAEMON (daemon_pipe[1] != 0) |
| 3624 | |
| 3625 | /* True if handling a fatal error already. */ |
| 3626 | extern bool fatal_error_in_progress; |
| 3627 | |
| 3628 | /* True means don't do use window-system-specific display code. */ |
| 3629 | extern bool inhibit_window_system; |
| 3630 | /* True means that a filter or a sentinel is running. */ |
| 3631 | extern bool running_asynch_code; |
| 3632 | |
| 3633 | /* Defined in process.c. */ |
| 3634 | extern Lisp_Object QCtype, Qlocal; |
| 3635 | extern void kill_buffer_processes (Lisp_Object); |
| 3636 | extern int wait_reading_process_output (intmax_t, int, int, bool, Lisp_Object, |
| 3637 | struct Lisp_Process *, int); |
| 3638 | /* Max value for the first argument of wait_reading_process_output. */ |
| 3639 | #if __GNUC__ == 3 || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5) |
| 3640 | /* Work around a bug in GCC 3.4.2, known to be fixed in GCC 4.6.3. |
| 3641 | The bug merely causes a bogus warning, but the warning is annoying. */ |
| 3642 | # define WAIT_READING_MAX min (TYPE_MAXIMUM (time_t), INTMAX_MAX) |
| 3643 | #else |
| 3644 | # define WAIT_READING_MAX INTMAX_MAX |
| 3645 | #endif |
| 3646 | extern void add_keyboard_wait_descriptor (int); |
| 3647 | extern void delete_keyboard_wait_descriptor (int); |
| 3648 | #ifdef HAVE_GPM |
| 3649 | extern void add_gpm_wait_descriptor (int); |
| 3650 | extern void delete_gpm_wait_descriptor (int); |
| 3651 | #endif |
| 3652 | extern void init_process_emacs (void); |
| 3653 | extern void syms_of_process (void); |
| 3654 | extern void setup_process_coding_systems (Lisp_Object); |
| 3655 | |
| 3656 | /* Defined in callproc.c. */ |
| 3657 | #ifndef DOS_NT |
| 3658 | _Noreturn |
| 3659 | #endif |
| 3660 | extern int child_setup (int, int, int, char **, bool, Lisp_Object); |
| 3661 | extern void init_callproc_1 (void); |
| 3662 | extern void init_callproc (void); |
| 3663 | extern void set_initial_environment (void); |
| 3664 | extern void syms_of_callproc (void); |
| 3665 | |
| 3666 | /* Defined in doc.c. */ |
| 3667 | extern Lisp_Object Qfunction_documentation; |
| 3668 | extern Lisp_Object read_doc_string (Lisp_Object); |
| 3669 | extern Lisp_Object get_doc_string (Lisp_Object, bool, bool); |
| 3670 | extern void syms_of_doc (void); |
| 3671 | extern int read_bytecode_char (bool); |
| 3672 | |
| 3673 | /* Defined in bytecode.c. */ |
| 3674 | extern void syms_of_bytecode (void); |
| 3675 | extern Lisp_Object exec_byte_code (Lisp_Object, Lisp_Object, Lisp_Object, |
| 3676 | Lisp_Object, ptrdiff_t, Lisp_Object *); |
| 3677 | |
| 3678 | /* Defined in macros.c. */ |
| 3679 | extern void init_macros (void); |
| 3680 | extern void syms_of_macros (void); |
| 3681 | |
| 3682 | /* Defined in undo.c. */ |
| 3683 | extern Lisp_Object Qapply; |
| 3684 | extern Lisp_Object Qinhibit_read_only; |
| 3685 | extern void truncate_undo_list (struct buffer *); |
| 3686 | extern void record_insert (ptrdiff_t, ptrdiff_t); |
| 3687 | extern void record_delete (ptrdiff_t, Lisp_Object, bool); |
| 3688 | extern void record_first_change (void); |
| 3689 | extern void record_change (ptrdiff_t, ptrdiff_t); |
| 3690 | extern void record_property_change (ptrdiff_t, ptrdiff_t, |
| 3691 | Lisp_Object, Lisp_Object, |
| 3692 | Lisp_Object); |
| 3693 | extern void syms_of_undo (void); |
| 3694 | /* Defined in textprop.c. */ |
| 3695 | extern Lisp_Object Qmouse_face; |
| 3696 | extern Lisp_Object Qinsert_in_front_hooks, Qinsert_behind_hooks; |
| 3697 | extern Lisp_Object Qminibuffer_prompt; |
| 3698 | |
| 3699 | extern void report_interval_modification (Lisp_Object, Lisp_Object); |
| 3700 | |
| 3701 | /* Defined in menu.c. */ |
| 3702 | extern void syms_of_menu (void); |
| 3703 | |
| 3704 | /* Defined in xmenu.c. */ |
| 3705 | extern void syms_of_xmenu (void); |
| 3706 | |
| 3707 | /* Defined in termchar.h. */ |
| 3708 | struct tty_display_info; |
| 3709 | |
| 3710 | /* Defined in termhooks.h. */ |
| 3711 | struct terminal; |
| 3712 | |
| 3713 | /* Defined in sysdep.c. */ |
| 3714 | #ifndef HAVE_GET_CURRENT_DIR_NAME |
| 3715 | extern char *get_current_dir_name (void); |
| 3716 | #endif |
| 3717 | extern void stuff_char (char c); |
| 3718 | extern void init_foreground_group (void); |
| 3719 | extern void sys_subshell (void); |
| 3720 | extern void sys_suspend (void); |
| 3721 | extern void discard_tty_input (void); |
| 3722 | extern void init_sys_modes (struct tty_display_info *); |
| 3723 | extern void reset_sys_modes (struct tty_display_info *); |
| 3724 | extern void init_all_sys_modes (void); |
| 3725 | extern void reset_all_sys_modes (void); |
| 3726 | extern void child_setup_tty (int); |
| 3727 | extern void setup_pty (int); |
| 3728 | extern int set_window_size (int, int, int); |
| 3729 | extern EMACS_INT get_random (void); |
| 3730 | extern void seed_random (void *, ptrdiff_t); |
| 3731 | extern void init_random (void); |
| 3732 | extern void emacs_backtrace (int); |
| 3733 | extern _Noreturn void emacs_abort (void) NO_INLINE; |
| 3734 | extern int emacs_open (const char *, int, int); |
| 3735 | extern int emacs_pipe (int[2]); |
| 3736 | extern int emacs_close (int); |
| 3737 | extern ptrdiff_t emacs_read (int, void *, ptrdiff_t); |
| 3738 | extern ptrdiff_t emacs_write (int, void const *, ptrdiff_t); |
| 3739 | extern ptrdiff_t emacs_write_sig (int, void const *, ptrdiff_t); |
| 3740 | extern void emacs_perror (char const *); |
| 3741 | |
| 3742 | extern void unlock_all_files (void); |
| 3743 | extern void lock_file (Lisp_Object); |
| 3744 | extern void unlock_file (Lisp_Object); |
| 3745 | extern void unlock_buffer (struct buffer *); |
| 3746 | extern void syms_of_filelock (void); |
| 3747 | |
| 3748 | /* Defined in sound.c. */ |
| 3749 | extern void syms_of_sound (void); |
| 3750 | |
| 3751 | /* Defined in category.c. */ |
| 3752 | extern void init_category_once (void); |
| 3753 | extern Lisp_Object char_category_set (int); |
| 3754 | extern void syms_of_category (void); |
| 3755 | |
| 3756 | /* Defined in ccl.c. */ |
| 3757 | extern void syms_of_ccl (void); |
| 3758 | |
| 3759 | /* Defined in dired.c. */ |
| 3760 | extern void syms_of_dired (void); |
| 3761 | extern Lisp_Object directory_files_internal (Lisp_Object, Lisp_Object, |
| 3762 | Lisp_Object, Lisp_Object, |
| 3763 | bool, Lisp_Object); |
| 3764 | |
| 3765 | /* Defined in term.c. */ |
| 3766 | extern int *char_ins_del_vector; |
| 3767 | extern void syms_of_term (void); |
| 3768 | extern _Noreturn void fatal (const char *msgid, ...) |
| 3769 | ATTRIBUTE_FORMAT_PRINTF (1, 2); |
| 3770 | |
| 3771 | /* Defined in terminal.c. */ |
| 3772 | extern void syms_of_terminal (void); |
| 3773 | |
| 3774 | /* Defined in font.c. */ |
| 3775 | extern void syms_of_font (void); |
| 3776 | extern void init_font (void); |
| 3777 | |
| 3778 | #ifdef HAVE_WINDOW_SYSTEM |
| 3779 | /* Defined in fontset.c. */ |
| 3780 | extern void syms_of_fontset (void); |
| 3781 | |
| 3782 | /* Defined in xfns.c, w32fns.c, or macfns.c. */ |
| 3783 | extern Lisp_Object Qfont_param; |
| 3784 | #endif |
| 3785 | |
| 3786 | /* Defined in gfilenotify.c */ |
| 3787 | #ifdef HAVE_GFILENOTIFY |
| 3788 | extern void globals_of_gfilenotify (void); |
| 3789 | extern void syms_of_gfilenotify (void); |
| 3790 | #endif |
| 3791 | |
| 3792 | /* Defined in inotify.c */ |
| 3793 | #ifdef HAVE_INOTIFY |
| 3794 | extern void syms_of_inotify (void); |
| 3795 | #endif |
| 3796 | |
| 3797 | #ifdef HAVE_W32NOTIFY |
| 3798 | /* Defined on w32notify.c. */ |
| 3799 | extern void syms_of_w32notify (void); |
| 3800 | #endif |
| 3801 | |
| 3802 | /* Defined in xfaces.c. */ |
| 3803 | extern Lisp_Object Qdefault, Qfringe; |
| 3804 | extern Lisp_Object Qscroll_bar, Qcursor; |
| 3805 | extern Lisp_Object Qmode_line_inactive; |
| 3806 | extern Lisp_Object Qface; |
| 3807 | extern Lisp_Object Qnormal; |
| 3808 | extern Lisp_Object QCfamily, QCweight, QCslant; |
| 3809 | extern Lisp_Object QCheight, QCname, QCwidth, QCforeground, QCbackground; |
| 3810 | extern Lisp_Object Qextra_light, Qlight, Qsemi_light, Qsemi_bold; |
| 3811 | extern Lisp_Object Qbold, Qextra_bold, Qultra_bold; |
| 3812 | extern Lisp_Object Qoblique, Qitalic; |
| 3813 | extern Lisp_Object Vface_alternative_font_family_alist; |
| 3814 | extern Lisp_Object Vface_alternative_font_registry_alist; |
| 3815 | extern void syms_of_xfaces (void); |
| 3816 | |
| 3817 | #ifdef HAVE_X_WINDOWS |
| 3818 | /* Defined in xfns.c. */ |
| 3819 | extern void syms_of_xfns (void); |
| 3820 | |
| 3821 | /* Defined in xsmfns.c. */ |
| 3822 | extern void syms_of_xsmfns (void); |
| 3823 | |
| 3824 | /* Defined in xselect.c. */ |
| 3825 | extern void syms_of_xselect (void); |
| 3826 | |
| 3827 | /* Defined in xterm.c. */ |
| 3828 | extern void syms_of_xterm (void); |
| 3829 | #endif /* HAVE_X_WINDOWS */ |
| 3830 | |
| 3831 | #ifdef HAVE_WINDOW_SYSTEM |
| 3832 | /* Defined in xterm.c, nsterm.m, w32term.c. */ |
| 3833 | extern char *x_get_keysym_name (int); |
| 3834 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 3835 | |
| 3836 | #ifdef HAVE_LIBXML2 |
| 3837 | /* Defined in xml.c. */ |
| 3838 | extern void syms_of_xml (void); |
| 3839 | extern void xml_cleanup_parser (void); |
| 3840 | #endif |
| 3841 | |
| 3842 | #ifdef HAVE_ZLIB |
| 3843 | /* Defined in decompress.c. */ |
| 3844 | extern void syms_of_decompress (void); |
| 3845 | #endif |
| 3846 | |
| 3847 | #ifdef HAVE_DBUS |
| 3848 | /* Defined in dbusbind.c. */ |
| 3849 | void syms_of_dbusbind (void); |
| 3850 | #endif |
| 3851 | |
| 3852 | |
| 3853 | /* Defined in profiler.c. */ |
| 3854 | extern bool profiler_memory_running; |
| 3855 | extern void malloc_probe (size_t); |
| 3856 | extern void syms_of_profiler (void); |
| 3857 | |
| 3858 | |
| 3859 | #ifdef DOS_NT |
| 3860 | /* Defined in msdos.c, w32.c. */ |
| 3861 | extern char *emacs_root_dir (void); |
| 3862 | #endif /* DOS_NT */ |
| 3863 | |
| 3864 | /* True means ^G can quit instantly. */ |
| 3865 | extern bool immediate_quit; |
| 3866 | |
| 3867 | extern void *xmalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3868 | extern void *xzalloc (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3869 | extern void *xrealloc (void *, size_t) ATTRIBUTE_ALLOC_SIZE ((2)); |
| 3870 | extern void xfree (void *); |
| 3871 | extern void *xmalloc_uncollectable (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3872 | extern void *xmalloc_unsafe (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3873 | extern void *xnmalloc (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2)); |
| 3874 | extern void *xnrealloc (void *, ptrdiff_t, ptrdiff_t) |
| 3875 | ATTRIBUTE_ALLOC_SIZE ((2,3)); |
| 3876 | extern void *xpalloc (void *, ptrdiff_t *, ptrdiff_t, ptrdiff_t, ptrdiff_t); |
| 3877 | extern void *xmalloc_atomic (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3878 | extern void *xzalloc_atomic (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3879 | extern void *xmalloc_atomic_unsafe (size_t) ATTRIBUTE_MALLOC_SIZE ((1)); |
| 3880 | extern void *xnmalloc_atomic (ptrdiff_t, ptrdiff_t) ATTRIBUTE_MALLOC_SIZE ((1,2)); |
| 3881 | |
| 3882 | extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; |
| 3883 | extern char *xlispstrdup (Lisp_Object) ATTRIBUTE_MALLOC; |
| 3884 | extern void dupstring (char **, char const *); |
| 3885 | extern void xputenv (const char *); |
| 3886 | |
| 3887 | extern char *egetenv (const char *); |
| 3888 | |
| 3889 | /* Copy Lisp string to temporary (allocated on stack) C string. */ |
| 3890 | |
| 3891 | #define xlispstrdupa(string) \ |
| 3892 | memcpy (alloca (SBYTES (string) + 1), \ |
| 3893 | SSDATA (string), SBYTES (string) + 1) |
| 3894 | |
| 3895 | /* Set up the name of the machine we're running on. */ |
| 3896 | extern void init_system_name (void); |
| 3897 | |
| 3898 | /* Return the absolute value of X. X should be a signed integer |
| 3899 | expression without side effects, and X's absolute value should not |
| 3900 | exceed the maximum for its promoted type. This is called 'eabs' |
| 3901 | because 'abs' is reserved by the C standard. */ |
| 3902 | #define eabs(x) ((x) < 0 ? -(x) : (x)) |
| 3903 | |
| 3904 | /* Return a fixnum or float, depending on whether VAL fits in a Lisp |
| 3905 | fixnum. */ |
| 3906 | |
| 3907 | #define make_fixnum_or_float(val) \ |
| 3908 | (FIXNUM_OVERFLOW_P (val) ? make_float (val) : make_number (val)) |
| 3909 | |
| 3910 | /* SAFE_ALLOCA normally allocates memory on the stack, but if size is |
| 3911 | larger than MAX_ALLOCA, use xmalloc to avoid overflowing the stack. */ |
| 3912 | |
| 3913 | enum MAX_ALLOCA { MAX_ALLOCA = 16 * 1024 }; |
| 3914 | |
| 3915 | #define USE_SAFE_ALLOCA ((void) 0) |
| 3916 | |
| 3917 | /* SAFE_ALLOCA allocates a simple buffer. */ |
| 3918 | |
| 3919 | #define SAFE_ALLOCA(size) ((size) < MAX_ALLOCA \ |
| 3920 | ? alloca (size) \ |
| 3921 | : xmalloc (size)) |
| 3922 | |
| 3923 | /* SAFE_NALLOCA sets BUF to a newly allocated array of MULTIPLIER * |
| 3924 | NITEMS items, each of the same type as *BUF. MULTIPLIER must |
| 3925 | positive. The code is tuned for MULTIPLIER being a constant. */ |
| 3926 | |
| 3927 | #define SAFE_NALLOCA(buf, multiplier, nitems) \ |
| 3928 | do { \ |
| 3929 | if ((nitems) <= MAX_ALLOCA / sizeof *(buf) / (multiplier)) \ |
| 3930 | (buf) = alloca (sizeof *(buf) * (multiplier) * (nitems)); \ |
| 3931 | else \ |
| 3932 | (buf) = xnmalloc (nitems, sizeof *(buf) * (multiplier)); \ |
| 3933 | } while (0) |
| 3934 | |
| 3935 | /* SAFE_FREE frees xmalloced memory and enables GC as needed. */ |
| 3936 | |
| 3937 | #define SAFE_FREE() ((void) 0) |
| 3938 | |
| 3939 | /* SAFE_ALLOCA_LISP allocates an array of Lisp_Objects. */ |
| 3940 | |
| 3941 | #define SAFE_ALLOCA_LISP(buf, nelt) \ |
| 3942 | do { \ |
| 3943 | if ((nelt) < MAX_ALLOCA / word_size) \ |
| 3944 | (buf) = alloca ((nelt) * word_size); \ |
| 3945 | else if ((nelt) < min (PTRDIFF_MAX, SIZE_MAX) / word_size) \ |
| 3946 | buf = xmalloc ((nelt) * word_size); \ |
| 3947 | else \ |
| 3948 | memory_full (SIZE_MAX); \ |
| 3949 | } while (false) |
| 3950 | |
| 3951 | /* Loop over all tails of a list, checking for cycles. |
| 3952 | FIXME: Make tortoise and n internal declarations. |
| 3953 | FIXME: Unroll the loop body so we don't need `n'. */ |
| 3954 | #define FOR_EACH_TAIL(hare, list, tortoise, n) \ |
| 3955 | for ((tortoise) = (hare) = (list), (n) = true; \ |
| 3956 | CONSP (hare); \ |
| 3957 | (hare = XCDR (hare), (n) = !(n), \ |
| 3958 | ((n) \ |
| 3959 | ? (EQ (hare, tortoise) \ |
| 3960 | ? xsignal1 (Qcircular_list, list) \ |
| 3961 | : (void) 0) \ |
| 3962 | /* Move tortoise before the next iteration, in case */ \ |
| 3963 | /* the next iteration does an Fsetcdr. */ \ |
| 3964 | : (void) ((tortoise) = XCDR (tortoise))))) |
| 3965 | |
| 3966 | /* Do a `for' loop over alist values. */ |
| 3967 | |
| 3968 | #define FOR_EACH_ALIST_VALUE(head_var, list_var, value_var) \ |
| 3969 | for ((list_var) = (head_var); \ |
| 3970 | (CONSP (list_var) && ((value_var) = XCDR (XCAR (list_var)), true)); \ |
| 3971 | (list_var) = XCDR (list_var)) |
| 3972 | |
| 3973 | /* Check whether it's time for GC, and run it if so. */ |
| 3974 | |
| 3975 | INLINE void |
| 3976 | maybe_gc (void) |
| 3977 | { |
| 3978 | return; |
| 3979 | } |
| 3980 | |
| 3981 | extern Lisp_Object Ffboundp (Lisp_Object); |
| 3982 | |
| 3983 | INLINE bool |
| 3984 | functionp (Lisp_Object object) |
| 3985 | { |
| 3986 | if (SYMBOLP (object) && !NILP (Ffboundp (object))) |
| 3987 | { |
| 3988 | object = Findirect_function (object, Qt); |
| 3989 | |
| 3990 | if (CONSP (object) && EQ (XCAR (object), Qautoload)) |
| 3991 | { |
| 3992 | /* Autoloaded symbols are functions, except if they load |
| 3993 | macros or keymaps. */ |
| 3994 | int i; |
| 3995 | for (i = 0; i < 4 && CONSP (object); i++) |
| 3996 | object = XCDR (object); |
| 3997 | |
| 3998 | return ! (CONSP (object) && !NILP (XCAR (object))); |
| 3999 | } |
| 4000 | } |
| 4001 | |
| 4002 | if (scm_is_true (scm_procedure_p (object))) |
| 4003 | return 1; |
| 4004 | else if (COMPILEDP (object)) |
| 4005 | return true; |
| 4006 | else if (CONSP (object)) |
| 4007 | { |
| 4008 | Lisp_Object car = XCAR (object); |
| 4009 | return EQ (car, Qlambda) || EQ (car, Qclosure); |
| 4010 | } |
| 4011 | } |
| 4012 | |
| 4013 | INLINE sym_t |
| 4014 | XSYMBOL (Lisp_Object a) |
| 4015 | { |
| 4016 | return scm_call_1 (scm_c_public_ref ("language elisp runtime", "symbol-desc"), |
| 4017 | a); |
| 4018 | } |
| 4019 | |
| 4020 | INLINE_HEADER_END |
| 4021 | #endif /* EMACS_LISP_H */ |