1 /* 2 ** $Id: luaconf.h $ 3 ** Configuration file for Lua 4 ** See Copyright Notice in lua.h 5 */ 6 7 8 #ifndef luaconf_h 9 #define luaconf_h 10 11 #include <limits.h> 12 #include <stddef.h> 13 14 15 /* 16 ** =================================================================== 17 ** General Configuration File for Lua 18 ** 19 ** Some definitions here can be changed externally, through the compiler 20 ** (e.g., with '-D' options): They are commented out or protected 21 ** by '#if !defined' guards. However, several other definitions 22 ** should be changed directly here, either because they affect the 23 ** Lua ABI (by making the changes here, you ensure that all software 24 ** connected to Lua, such as C libraries, will be compiled with the same 25 ** configuration); or because they are seldom changed. 26 ** 27 ** Search for "@@" to find all configurable definitions. 28 ** =================================================================== 29 */ 30 31 32 /* 33 ** {==================================================================== 34 ** System Configuration: macros to adapt (if needed) Lua to some 35 ** particular platform, for instance restricting it to C89. 36 ** ===================================================================== 37 */ 38 39 /* 40 @@ LUA_USE_C89 controls the use of non-ISO-C89 features. 41 ** Define it if you want Lua to avoid the use of a few C99 features 42 ** or Windows-specific features on Windows. 43 */ 44 /* #define LUA_USE_C89 */ 45 46 47 /* 48 ** By default, Lua on Windows use (some) specific Windows features 49 */ 50 #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) 51 #define LUA_USE_WINDOWS /* enable goodies for regular Windows */ 52 #endif 53 54 55 #if defined(LUA_USE_WINDOWS) 56 #define LUA_DL_DLL /* enable support for DLL */ 57 #define LUA_USE_C89 /* broadly, Windows is C89 */ 58 #endif 59 60 61 #if defined(LUA_USE_LINUX) 62 #define LUA_USE_POSIX 63 #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 64 #endif 65 66 67 #if defined(LUA_USE_MACOSX) 68 #define LUA_USE_POSIX 69 #define LUA_USE_DLOPEN /* MacOS does not need -ldl */ 70 #endif 71 72 73 #if defined(LUA_USE_IOS) 74 #define LUA_USE_POSIX 75 #define LUA_USE_DLOPEN 76 #endif 77 78 79 /* 80 @@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits. 81 */ 82 #define LUAI_IS32INT ((UINT_MAX >> 30) >= 3) 83 84 /* }================================================================== */ 85 86 87 88 /* 89 ** {================================================================== 90 ** Configuration for Number types. These options should not be 91 ** set externally, because any other code connected to Lua must 92 ** use the same configuration. 93 ** =================================================================== 94 */ 95 96 /* 97 @@ LUA_INT_TYPE defines the type for Lua integers. 98 @@ LUA_FLOAT_TYPE defines the type for Lua floats. 99 ** Lua should work fine with any mix of these options supported 100 ** by your C compiler. The usual configurations are 64-bit integers 101 ** and 'double' (the default), 32-bit integers and 'float' (for 102 ** restricted platforms), and 'long'/'double' (for C compilers not 103 ** compliant with C99, which may not have support for 'long long'). 104 */ 105 106 /* predefined options for LUA_INT_TYPE */ 107 #define LUA_INT_INT 1 108 #define LUA_INT_LONG 2 109 #define LUA_INT_LONGLONG 3 110 111 /* predefined options for LUA_FLOAT_TYPE */ 112 #define LUA_FLOAT_FLOAT 1 113 #define LUA_FLOAT_DOUBLE 2 114 #define LUA_FLOAT_LONGDOUBLE 3 115 116 117 /* Default configuration ('long long' and 'double', for 64-bit Lua) */ 118 #define LUA_INT_DEFAULT LUA_INT_LONGLONG 119 #define LUA_FLOAT_DEFAULT LUA_FLOAT_DOUBLE 120 121 122 /* 123 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. 124 */ 125 #define LUA_32BITS 0 126 127 128 /* 129 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for 130 ** C89 ('long' and 'double'); Windows always has '__int64', so it does 131 ** not need to use this case. 132 */ 133 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) 134 #define LUA_C89_NUMBERS 1 135 #else 136 #define LUA_C89_NUMBERS 0 137 #endif 138 139 140 #if LUA_32BITS /* { */ 141 /* 142 ** 32-bit integers and 'float' 143 */ 144 #if LUAI_IS32INT /* use 'int' if big enough */ 145 #define LUA_INT_TYPE LUA_INT_INT 146 #else /* otherwise use 'long' */ 147 #define LUA_INT_TYPE LUA_INT_LONG 148 #endif 149 #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT 150 151 #elif LUA_C89_NUMBERS /* }{ */ 152 /* 153 ** largest types available for C89 ('long' and 'double') 154 */ 155 #define LUA_INT_TYPE LUA_INT_LONG 156 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 157 158 #else /* }{ */ 159 /* use defaults */ 160 161 #define LUA_INT_TYPE LUA_INT_DEFAULT 162 #define LUA_FLOAT_TYPE LUA_FLOAT_DEFAULT 163 164 #endif /* } */ 165 166 167 /* }================================================================== */ 168 169 170 171 /* 172 ** {================================================================== 173 ** Configuration for Paths. 174 ** =================================================================== 175 */ 176 177 /* 178 ** LUA_PATH_SEP is the character that separates templates in a path. 179 ** LUA_PATH_MARK is the string that marks the substitution points in a 180 ** template. 181 ** LUA_EXEC_DIR in a Windows path is replaced by the executable's 182 ** directory. 183 */ 184 #define LUA_PATH_SEP ";" 185 #define LUA_PATH_MARK "?" 186 #define LUA_EXEC_DIR "!" 187 188 189 /* 190 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 191 ** Lua libraries. 192 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 193 ** C libraries. 194 ** CHANGE them if your machine has a non-conventional directory 195 ** hierarchy or if you want to install your libraries in 196 ** non-conventional directories. 197 */ 198 199 #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 200 #if defined(_WIN32) /* { */ 201 /* 202 ** In Windows, any exclamation mark ('!') in the path is replaced by the 203 ** path of the directory of the executable file of the current process. 204 */ 205 #define LUA_LDIR "!\\lua\\" 206 #define LUA_CDIR "!\\" 207 #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" 208 209 #if !defined(LUA_PATH_DEFAULT) 210 #define LUA_PATH_DEFAULT \ 211 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 212 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ 213 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ 214 ".\\?.lua;" ".\\?\\init.lua" 215 #endif 216 217 #if !defined(LUA_CPATH_DEFAULT) 218 #define LUA_CPATH_DEFAULT \ 219 LUA_CDIR"?.dll;" \ 220 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ 221 LUA_CDIR"loadall.dll;" ".\\?.dll" 222 #endif 223 224 #else /* }{ */ 225 226 #define LUA_ROOT "/usr/local/" 227 #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" 228 #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" 229 230 #if !defined(LUA_PATH_DEFAULT) 231 #define LUA_PATH_DEFAULT \ 232 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 233 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 234 "./?.lua;" "./?/init.lua" 235 #endif 236 237 #if !defined(LUA_CPATH_DEFAULT) 238 #define LUA_CPATH_DEFAULT \ 239 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 240 #endif 241 242 #endif /* } */ 243 244 245 /* 246 @@ LUA_DIRSEP is the directory separator (for submodules). 247 ** CHANGE it if your machine does not use "/" as the directory separator 248 ** and is not Windows. (On Windows Lua automatically uses "\".) 249 */ 250 #if !defined(LUA_DIRSEP) 251 252 #if defined(_WIN32) 253 #define LUA_DIRSEP "\\" 254 #else 255 #define LUA_DIRSEP "/" 256 #endif 257 258 #endif 259 260 /* }================================================================== */ 261 262 263 /* 264 ** {================================================================== 265 ** Marks for exported symbols in the C code 266 ** =================================================================== 267 */ 268 269 /* 270 @@ LUA_API is a mark for all core API functions. 271 @@ LUALIB_API is a mark for all auxiliary library functions. 272 @@ LUAMOD_API is a mark for all standard library opening functions. 273 ** CHANGE them if you need to define those functions in some special way. 274 ** For instance, if you want to create one Windows DLL with the core and 275 ** the libraries, you may want to use the following definition (define 276 ** LUA_BUILD_AS_DLL to get it). 277 */ 278 #if defined(LUA_BUILD_AS_DLL) /* { */ 279 280 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 281 #define LUA_API __declspec(dllexport) 282 #else /* }{ */ 283 #define LUA_API __declspec(dllimport) 284 #endif /* } */ 285 286 #else /* }{ */ 287 288 #define LUA_API extern 289 290 #endif /* } */ 291 292 293 /* 294 ** More often than not the libs go together with the core. 295 */ 296 #define LUALIB_API LUA_API 297 #define LUAMOD_API LUA_API 298 299 300 /* 301 @@ LUAI_FUNC is a mark for all extern functions that are not to be 302 ** exported to outside modules. 303 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables, 304 ** none of which to be exported to outside modules (LUAI_DDEF for 305 ** definitions and LUAI_DDEC for declarations). 306 ** CHANGE them if you need to mark them in some special way. Elf/gcc 307 ** (versions 3.2 and later) mark them as "hidden" to optimize access 308 ** when Lua is compiled as a shared library. Not all elf targets support 309 ** this attribute. Unfortunately, gcc does not offer a way to check 310 ** whether the target offers that support, and those without support 311 ** give a warning about it. To avoid these warnings, change to the 312 ** default definition. 313 */ 314 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 315 defined(__ELF__) /* { */ 316 #define LUAI_FUNC __attribute__((visibility("internal"))) extern 317 #else /* }{ */ 318 #define LUAI_FUNC extern 319 #endif /* } */ 320 321 #define LUAI_DDEC(dec) LUAI_FUNC dec 322 #define LUAI_DDEF /* empty */ 323 324 /* }================================================================== */ 325 326 327 /* 328 ** {================================================================== 329 ** Compatibility with previous versions 330 ** =================================================================== 331 */ 332 333 /* 334 @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3. 335 ** You can define it to get all options, or change specific options 336 ** to fit your specific needs. 337 */ 338 #if defined(LUA_COMPAT_5_3) /* { */ 339 340 /* 341 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 342 ** functions in the mathematical library. 343 ** (These functions were already officially removed in 5.3; 344 ** nevertheless they are still available here.) 345 */ 346 #define LUA_COMPAT_MATHLIB 347 348 /* 349 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 350 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 351 ** luaL_checkint, luaL_checklong, etc.) 352 ** (These macros were also officially removed in 5.3, but they are still 353 ** available here.) 354 */ 355 #define LUA_COMPAT_APIINTCASTS 356 357 358 /* 359 @@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod 360 ** using '__lt'. 361 */ 362 #define LUA_COMPAT_LT_LE 363 364 365 /* 366 @@ The following macros supply trivial compatibility for some 367 ** changes in the API. The macros themselves document how to 368 ** change your code to avoid using them. 369 ** (Once more, these macros were officially removed in 5.3, but they are 370 ** still available here.) 371 */ 372 #define lua_strlen(L,i) lua_rawlen(L, (i)) 373 374 #define lua_objlen(L,i) lua_rawlen(L, (i)) 375 376 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 377 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 378 379 #endif /* } */ 380 381 /* }================================================================== */ 382 383 384 385 /* 386 ** {================================================================== 387 ** Configuration for Numbers (low-level part). 388 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 389 ** satisfy your needs. 390 ** =================================================================== 391 */ 392 393 /* 394 @@ LUAI_UACNUMBER is the result of a 'default argument promotion' 395 @@ over a floating number. 396 @@ l_floatatt(x) corrects float attribute 'x' to the proper float type 397 ** by prefixing it with one of FLT/DBL/LDBL. 398 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 399 @@ LUA_NUMBER_FMT is the format for writing floats. 400 @@ lua_number2str converts a float to a string. 401 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 402 @@ l_floor takes the floor of a float. 403 @@ lua_str2number converts a decimal numeral to a number. 404 */ 405 406 407 /* The following definitions are good for most cases here */ 408 409 #define l_floor(x) (l_mathop(floor)(x)) 410 411 #define lua_number2str(s,sz,n) \ 412 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 413 414 /* 415 @@ lua_numbertointeger converts a float number with an integral value 416 ** to an integer, or returns 0 if float is not within the range of 417 ** a lua_Integer. (The range comparisons are tricky because of 418 ** rounding. The tests here assume a two-complement representation, 419 ** where MININTEGER always has an exact representation as a float; 420 ** MAXINTEGER may not have one, and therefore its conversion to float 421 ** may have an ill-defined value.) 422 */ 423 #define lua_numbertointeger(n,p) \ 424 ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ 425 (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ 426 (*(p) = (LUA_INTEGER)(n), 1)) 427 428 429 /* now the variable definitions */ 430 431 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 432 433 #define LUA_NUMBER float 434 435 #define l_floatatt(n) (FLT_##n) 436 437 #define LUAI_UACNUMBER double 438 439 #define LUA_NUMBER_FRMLEN "" 440 #define LUA_NUMBER_FMT "%.7g" 441 442 #define l_mathop(op) op##f 443 444 #define lua_str2number(s,p) strtof((s), (p)) 445 446 447 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 448 449 #define LUA_NUMBER long double 450 451 #define l_floatatt(n) (LDBL_##n) 452 453 #define LUAI_UACNUMBER long double 454 455 #define LUA_NUMBER_FRMLEN "L" 456 #define LUA_NUMBER_FMT "%.19Lg" 457 458 #define l_mathop(op) op##l 459 460 #define lua_str2number(s,p) strtold((s), (p)) 461 462 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 463 464 #define LUA_NUMBER double 465 466 #define l_floatatt(n) (DBL_##n) 467 468 #define LUAI_UACNUMBER double 469 470 #define LUA_NUMBER_FRMLEN "" 471 #define LUA_NUMBER_FMT "%.14g" 472 473 #define l_mathop(op) op 474 475 #define lua_str2number(s,p) strtod((s), (p)) 476 477 #else /* }{ */ 478 479 #error "numeric float type not defined" 480 481 #endif /* } */ 482 483 484 485 /* 486 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 487 @@ LUAI_UACINT is the result of a 'default argument promotion' 488 @@ over a LUA_INTEGER. 489 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 490 @@ LUA_INTEGER_FMT is the format for writing integers. 491 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 492 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 493 @@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED. 494 @@ lua_integer2str converts an integer to a string. 495 */ 496 497 498 /* The following definitions are good for most cases here */ 499 500 #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 501 502 #define LUAI_UACINT LUA_INTEGER 503 504 #define lua_integer2str(s,sz,n) \ 505 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 506 507 /* 508 ** use LUAI_UACINT here to avoid problems with promotions (which 509 ** can turn a comparison between unsigneds into a signed comparison) 510 */ 511 #define LUA_UNSIGNED unsigned LUAI_UACINT 512 513 514 /* now the variable definitions */ 515 516 #if LUA_INT_TYPE == LUA_INT_INT /* { int */ 517 518 #define LUA_INTEGER int 519 #define LUA_INTEGER_FRMLEN "" 520 521 #define LUA_MAXINTEGER INT_MAX 522 #define LUA_MININTEGER INT_MIN 523 524 #define LUA_MAXUNSIGNED UINT_MAX 525 526 #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 527 528 #define LUA_INTEGER long 529 #define LUA_INTEGER_FRMLEN "l" 530 531 #define LUA_MAXINTEGER LONG_MAX 532 #define LUA_MININTEGER LONG_MIN 533 534 #define LUA_MAXUNSIGNED ULONG_MAX 535 536 #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 537 538 /* use presence of macro LLONG_MAX as proxy for C99 compliance */ 539 #if defined(LLONG_MAX) /* { */ 540 /* use ISO C99 stuff */ 541 542 #define LUA_INTEGER long long 543 #define LUA_INTEGER_FRMLEN "ll" 544 545 #define LUA_MAXINTEGER LLONG_MAX 546 #define LUA_MININTEGER LLONG_MIN 547 548 #define LUA_MAXUNSIGNED ULLONG_MAX 549 550 #elif defined(LUA_USE_WINDOWS) /* }{ */ 551 /* in Windows, can use specific Windows types */ 552 553 #define LUA_INTEGER __int64 554 #define LUA_INTEGER_FRMLEN "I64" 555 556 #define LUA_MAXINTEGER _I64_MAX 557 #define LUA_MININTEGER _I64_MIN 558 559 #define LUA_MAXUNSIGNED _UI64_MAX 560 561 #else /* }{ */ 562 563 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 564 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 565 566 #endif /* } */ 567 568 #else /* }{ */ 569 570 #error "numeric integer type not defined" 571 572 #endif /* } */ 573 574 /* }================================================================== */ 575 576 577 /* 578 ** {================================================================== 579 ** Dependencies with C99 and other C details 580 ** =================================================================== 581 */ 582 583 /* 584 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 585 ** (All uses in Lua have only one format item.) 586 */ 587 #if !defined(LUA_USE_C89) 588 #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 589 #else 590 #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 591 #endif 592 593 594 /* 595 @@ lua_strx2number converts a hexadecimal numeral to a number. 596 ** In C99, 'strtod' does that conversion. Otherwise, you can 597 ** leave 'lua_strx2number' undefined and Lua will provide its own 598 ** implementation. 599 */ 600 #if !defined(LUA_USE_C89) 601 #define lua_strx2number(s,p) lua_str2number(s,p) 602 #endif 603 604 605 /* 606 @@ lua_pointer2str converts a pointer to a readable string in a 607 ** non-specified way. 608 */ 609 #define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) 610 611 612 /* 613 @@ lua_number2strx converts a float to a hexadecimal numeral. 614 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 615 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 616 ** provide its own implementation. 617 */ 618 #if !defined(LUA_USE_C89) 619 #define lua_number2strx(L,b,sz,f,n) \ 620 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 621 #endif 622 623 624 /* 625 ** 'strtof' and 'opf' variants for math functions are not valid in 626 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 627 ** availability of these variants. ('math.h' is already included in 628 ** all files that use these macros.) 629 */ 630 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 631 #undef l_mathop /* variants not available */ 632 #undef lua_str2number 633 #define l_mathop(op) (lua_Number)op /* no variant */ 634 #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 635 #endif 636 637 638 /* 639 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 640 ** functions. It must be a numerical type; Lua will use 'intptr_t' if 641 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 642 ** 'intptr_t' in C89) 643 */ 644 #define LUA_KCONTEXT ptrdiff_t 645 646 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 647 __STDC_VERSION__ >= 199901L 648 #include <stdint.h> 649 #if defined(INTPTR_MAX) /* even in C99 this type is optional */ 650 #undef LUA_KCONTEXT 651 #define LUA_KCONTEXT intptr_t 652 #endif 653 #endif 654 655 656 /* 657 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 658 ** Change that if you do not want to use C locales. (Code using this 659 ** macro must include the header 'locale.h'.) 660 */ 661 #if !defined(lua_getlocaledecpoint) 662 #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 663 #endif 664 665 666 /* 667 ** macros to improve jump prediction, used mostly for error handling 668 ** and debug facilities. (Some macros in the Lua API use these macros. 669 ** Define LUA_NOBUILTIN if you do not want '__builtin_expect' in your 670 ** code.) 671 */ 672 #if !defined(luai_likely) 673 674 #if defined(__GNUC__) && !defined(LUA_NOBUILTIN) 675 #define luai_likely(x) (__builtin_expect(((x) != 0), 1)) 676 #define luai_unlikely(x) (__builtin_expect(((x) != 0), 0)) 677 #else 678 #define luai_likely(x) (x) 679 #define luai_unlikely(x) (x) 680 #endif 681 682 #endif 683 684 685 #if defined(LUA_CORE) || defined(LUA_LIB) 686 /* shorter names for Lua's own use */ 687 #define l_likely(x) luai_likely(x) 688 #define l_unlikely(x) luai_unlikely(x) 689 #endif 690 691 692 693 /* }================================================================== */ 694 695 696 /* 697 ** {================================================================== 698 ** Language Variations 699 ** ===================================================================== 700 */ 701 702 /* 703 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 704 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 705 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 706 ** coercion from strings to numbers. 707 */ 708 /* #define LUA_NOCVTN2S */ 709 /* #define LUA_NOCVTS2N */ 710 711 712 /* 713 @@ LUA_USE_APICHECK turns on several consistency checks on the C API. 714 ** Define it as a help when debugging C code. 715 */ 716 #if defined(LUA_USE_APICHECK) 717 #include <assert.h> 718 #define luai_apicheck(l,e) assert(e) 719 #endif 720 721 /* }================================================================== */ 722 723 724 /* 725 ** {================================================================== 726 ** Macros that affect the API and must be stable (that is, must be the 727 ** same when you compile Lua and when you compile code that links to 728 ** Lua). 729 ** ===================================================================== 730 */ 731 732 /* 733 @@ LUAI_MAXSTACK limits the size of the Lua stack. 734 ** CHANGE it if you need a different limit. This limit is arbitrary; 735 ** its only purpose is to stop Lua from consuming unlimited stack 736 ** space (and to reserve some numbers for pseudo-indices). 737 ** (It must fit into max(size_t)/32 and max(int)/2.) 738 */ 739 #if LUAI_IS32INT 740 #define LUAI_MAXSTACK 1000000 741 #else 742 #define LUAI_MAXSTACK 15000 743 #endif 744 745 746 /* 747 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with 748 ** a Lua state with very fast access. 749 ** CHANGE it if you need a different size. 750 */ 751 #define LUA_EXTRASPACE (sizeof(void *)) 752 753 754 /* 755 @@ LUA_IDSIZE gives the maximum size for the description of the source 756 ** of a function in debug information. 757 ** CHANGE it if you want a different size. 758 */ 759 #define LUA_IDSIZE 60 760 761 762 /* 763 @@ LUAL_BUFFERSIZE is the initial buffer size used by the lauxlib 764 ** buffer system. 765 */ 766 #define LUAL_BUFFERSIZE ((int)(16 * sizeof(void*) * sizeof(lua_Number))) 767 768 769 /* 770 @@ LUAI_MAXALIGN defines fields that, when used in a union, ensure 771 ** maximum alignment for the other items in that union. 772 */ 773 #define LUAI_MAXALIGN lua_Number n; double u; void *s; lua_Integer i; long l 774 775 /* }================================================================== */ 776 777 778 779 780 781 /* =================================================================== */ 782 783 /* 784 ** Local configuration. You can use this space to add your redefinitions 785 ** without modifying the main part of the file. 786 */ 787 788 789 790 #include <luaconf.local.h> 791 792 #endif 793 794