1 /* 2 ** $Id: luaconf.h,v 1.259 2016/12/22 13:08:50 roberto Exp $ 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 ** Search for "@@" to find all configurable definitions. 18 ** =================================================================== 19 */ 20 21 22 /* 23 ** {==================================================================== 24 ** System Configuration: macros to adapt (if needed) Lua to some 25 ** particular platform, for instance compiling it with 32-bit numbers or 26 ** restricting it to C89. 27 ** ===================================================================== 28 */ 29 30 /* 31 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You 32 ** can also define LUA_32BITS in the make file, but changing here you 33 ** ensure that all software connected to Lua will be compiled with the 34 ** same configuration. 35 */ 36 /* #define LUA_32BITS */ 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 #define LUA_USE_READLINE /* needs some extra libraries */ 65 #endif 66 67 68 #if defined(LUA_USE_MACOSX) 69 #define LUA_USE_POSIX 70 #define LUA_USE_DLOPEN /* MacOS does not need -ldl */ 71 #define LUA_USE_READLINE /* needs an extra library: -lreadline */ 72 #endif 73 74 75 /* 76 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for 77 ** C89 ('long' and 'double'); Windows always has '__int64', so it does 78 ** not need to use this case. 79 */ 80 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) 81 #define LUA_C89_NUMBERS 82 #endif 83 84 85 86 /* 87 @@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. 88 */ 89 /* avoid undefined shifts */ 90 #if ((INT_MAX >> 15) >> 15) >= 1 91 #define LUAI_BITSINT 32 92 #else 93 /* 'int' always must have at least 16 bits */ 94 #define LUAI_BITSINT 16 95 #endif 96 97 98 /* 99 @@ LUA_INT_TYPE defines the type for Lua integers. 100 @@ LUA_FLOAT_TYPE defines the type for Lua floats. 101 ** Lua should work fine with any mix of these options (if supported 102 ** by your C compiler). The usual configurations are 64-bit integers 103 ** and 'double' (the default), 32-bit integers and 'float' (for 104 ** restricted platforms), and 'long'/'double' (for C compilers not 105 ** compliant with C99, which may not have support for 'long long'). 106 */ 107 108 /* predefined options for LUA_INT_TYPE */ 109 #define LUA_INT_INT 1 110 #define LUA_INT_LONG 2 111 #define LUA_INT_LONGLONG 3 112 113 /* predefined options for LUA_FLOAT_TYPE */ 114 #define LUA_FLOAT_FLOAT 1 115 #define LUA_FLOAT_DOUBLE 2 116 #define LUA_FLOAT_LONGDOUBLE 3 117 118 #if defined(LUA_32BITS) /* { */ 119 /* 120 ** 32-bit integers and 'float' 121 */ 122 #if LUAI_BITSINT >= 32 /* use 'int' if big enough */ 123 #define LUA_INT_TYPE LUA_INT_INT 124 #else /* otherwise use 'long' */ 125 #define LUA_INT_TYPE LUA_INT_LONG 126 #endif 127 #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT 128 129 #elif defined(LUA_C89_NUMBERS) /* }{ */ 130 /* 131 ** largest types available for C89 ('long' and 'double') 132 */ 133 #define LUA_INT_TYPE LUA_INT_LONG 134 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 135 136 #endif /* } */ 137 138 139 /* 140 ** default configuration for 64-bit Lua ('long long' and 'double') 141 */ 142 #if !defined(LUA_INT_TYPE) 143 #define LUA_INT_TYPE LUA_INT_LONGLONG 144 #endif 145 146 #if !defined(LUA_FLOAT_TYPE) 147 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 148 #endif 149 150 /* }================================================================== */ 151 152 153 154 155 /* 156 ** {================================================================== 157 ** Configuration for Paths. 158 ** =================================================================== 159 */ 160 161 /* 162 ** LUA_PATH_SEP is the character that separates templates in a path. 163 ** LUA_PATH_MARK is the string that marks the substitution points in a 164 ** template. 165 ** LUA_EXEC_DIR in a Windows path is replaced by the executable's 166 ** directory. 167 */ 168 #define LUA_PATH_SEP ";" 169 #define LUA_PATH_MARK "?" 170 #define LUA_EXEC_DIR "!" 171 172 173 /* 174 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 175 ** Lua libraries. 176 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 177 ** C libraries. 178 ** CHANGE them if your machine has a non-conventional directory 179 ** hierarchy or if you want to install your libraries in 180 ** non-conventional directories. 181 */ 182 #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 183 #if defined(_WIN32) /* { */ 184 /* 185 ** In Windows, any exclamation mark ('!') in the path is replaced by the 186 ** path of the directory of the executable file of the current process. 187 */ 188 #define LUA_LDIR "!\\lua\\" 189 #define LUA_CDIR "!\\" 190 #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" 191 #define LUA_PATH_DEFAULT \ 192 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 193 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ 194 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ 195 ".\\?.lua;" ".\\?\\init.lua" 196 #define LUA_CPATH_DEFAULT \ 197 LUA_CDIR"?.dll;" \ 198 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ 199 LUA_CDIR"loadall.dll;" ".\\?.dll" 200 201 #else /* }{ */ 202 203 #define LUA_ROOT "/usr/local/" 204 #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" 205 #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" 206 #define LUA_PATH_DEFAULT \ 207 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 208 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 209 "./?.lua;" "./?/init.lua" 210 #define LUA_CPATH_DEFAULT \ 211 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 212 #endif /* } */ 213 214 215 /* 216 @@ LUA_DIRSEP is the directory separator (for submodules). 217 ** CHANGE it if your machine does not use "/" as the directory separator 218 ** and is not Windows. (On Windows Lua automatically uses "\".) 219 */ 220 #if defined(_WIN32) 221 #define LUA_DIRSEP "\\" 222 #else 223 #define LUA_DIRSEP "/" 224 #endif 225 226 /* }================================================================== */ 227 228 229 /* 230 ** {================================================================== 231 ** Marks for exported symbols in the C code 232 ** =================================================================== 233 */ 234 235 /* 236 @@ LUA_API is a mark for all core API functions. 237 @@ LUALIB_API is a mark for all auxiliary library functions. 238 @@ LUAMOD_API is a mark for all standard library opening functions. 239 ** CHANGE them if you need to define those functions in some special way. 240 ** For instance, if you want to create one Windows DLL with the core and 241 ** the libraries, you may want to use the following definition (define 242 ** LUA_BUILD_AS_DLL to get it). 243 */ 244 #if defined(LUA_BUILD_AS_DLL) /* { */ 245 246 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 247 #define LUA_API __declspec(dllexport) 248 #else /* }{ */ 249 #define LUA_API __declspec(dllimport) 250 #endif /* } */ 251 252 #else /* }{ */ 253 254 #if defined(_WIN32) 255 #define LUA_API __declspec(dllexport) 256 #else 257 #define LUA_API extern 258 #endif 259 260 #endif /* } */ 261 262 263 /* more often than not the libs go together with the core */ 264 #define LUALIB_API LUA_API 265 #define LUAMOD_API LUALIB_API 266 267 268 /* 269 @@ LUAI_FUNC is a mark for all extern functions that are not to be 270 ** exported to outside modules. 271 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 272 ** that are not to be exported to outside modules (LUAI_DDEF for 273 ** definitions and LUAI_DDEC for declarations). 274 ** CHANGE them if you need to mark them in some special way. Elf/gcc 275 ** (versions 3.2 and later) mark them as "hidden" to optimize access 276 ** when Lua is compiled as a shared library. Not all elf targets support 277 ** this attribute. Unfortunately, gcc does not offer a way to check 278 ** whether the target offers that support, and those without support 279 ** give a warning about it. To avoid these warnings, change to the 280 ** default definition. 281 */ 282 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 283 defined(__ELF__) /* { */ 284 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 285 #else /* }{ */ 286 #define LUAI_FUNC extern 287 #endif /* } */ 288 289 #define LUAI_DDEC LUAI_FUNC 290 #define LUAI_DDEF /* empty */ 291 292 /* }================================================================== */ 293 294 295 /* 296 ** {================================================================== 297 ** Compatibility with previous versions 298 ** =================================================================== 299 */ 300 301 /* 302 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. 303 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. 304 ** You can define it to get all options, or change specific options 305 ** to fit your specific needs. 306 */ 307 #if defined(LUA_COMPAT_5_2) /* { */ 308 309 /* 310 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 311 ** functions in the mathematical library. 312 */ 313 #define LUA_COMPAT_MATHLIB 314 315 /* 316 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. 317 */ 318 #define LUA_COMPAT_BITLIB 319 320 /* 321 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. 322 */ 323 #define LUA_COMPAT_IPAIRS 324 325 /* 326 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 327 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 328 ** luaL_checkint, luaL_checklong, etc.) 329 */ 330 #define LUA_COMPAT_APIINTCASTS 331 332 #endif /* } */ 333 334 335 #if defined(LUA_COMPAT_5_1) /* { */ 336 337 /* Incompatibilities from 5.2 -> 5.3 */ 338 #define LUA_COMPAT_MATHLIB 339 #define LUA_COMPAT_APIINTCASTS 340 341 /* 342 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 343 ** You can replace it with 'table.unpack'. 344 */ 345 #define LUA_COMPAT_UNPACK 346 347 /* 348 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 349 ** You can replace it with 'package.searchers'. 350 */ 351 #define LUA_COMPAT_LOADERS 352 353 /* 354 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 355 ** You can call your C function directly (with light C functions). 356 */ 357 #define lua_cpcall(L,f,u) \ 358 (lua_pushcfunction(L, (f)), \ 359 lua_pushlightuserdata(L,(u)), \ 360 lua_pcall(L,1,0,0)) 361 362 363 /* 364 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 365 ** You can rewrite 'log10(x)' as 'log(x, 10)'. 366 */ 367 #define LUA_COMPAT_LOG10 368 369 /* 370 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 371 ** library. You can rewrite 'loadstring(s)' as 'load(s)'. 372 */ 373 #define LUA_COMPAT_LOADSTRING 374 375 /* 376 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 377 */ 378 #define LUA_COMPAT_MAXN 379 380 /* 381 @@ The following macros supply trivial compatibility for some 382 ** changes in the API. The macros themselves document how to 383 ** change your code to avoid using them. 384 */ 385 #define lua_strlen(L,i) lua_rawlen(L, (i)) 386 387 #define lua_objlen(L,i) lua_rawlen(L, (i)) 388 389 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 390 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 391 392 /* 393 @@ LUA_COMPAT_MODULE controls compatibility with previous 394 ** module functions 'module' (Lua) and 'luaL_register' (C). 395 */ 396 #define LUA_COMPAT_MODULE 397 398 #endif /* } */ 399 400 401 /* 402 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a 403 @@ a float mark ('.0'). 404 ** This macro is not on by default even in compatibility mode, 405 ** because this is not really an incompatibility. 406 */ 407 /* #define LUA_COMPAT_FLOATSTRING */ 408 409 /* }================================================================== */ 410 411 412 413 /* 414 ** {================================================================== 415 ** Configuration for Numbers. 416 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 417 ** satisfy your needs. 418 ** =================================================================== 419 */ 420 421 /* 422 @@ LUA_NUMBER is the floating-point type used by Lua. 423 @@ LUAI_UACNUMBER is the result of a 'default argument promotion' 424 @@ over a floating number. 425 @@ l_mathlim(x) corrects limit name 'x' to the proper float type 426 ** by prefixing it with one of FLT/DBL/LDBL. 427 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 428 @@ LUA_NUMBER_FMT is the format for writing floats. 429 @@ lua_number2str converts a float to a string. 430 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 431 @@ l_floor takes the floor of a float. 432 @@ lua_str2number converts a decimal numeric string to a number. 433 */ 434 435 436 /* The following definitions are good for most cases here */ 437 438 #define l_floor(x) (l_mathop(floor)(x)) 439 440 #define lua_number2str(s,sz,n) \ 441 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 442 443 /* 444 @@ lua_numbertointeger converts a float number to an integer, or 445 ** returns 0 if float is not within the range of a lua_Integer. 446 ** (The range comparisons are tricky because of rounding. The tests 447 ** here assume a two-complement representation, where MININTEGER always 448 ** has an exact representation as a float; MAXINTEGER may not have one, 449 ** and therefore its conversion to float may have an ill-defined value.) 450 */ 451 #define lua_numbertointeger(n,p) \ 452 ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ 453 (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ 454 (*(p) = (LUA_INTEGER)(n), 1)) 455 456 457 /* now the variable definitions */ 458 459 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 460 461 #define LUA_NUMBER float 462 463 #define l_mathlim(n) (FLT_##n) 464 465 #define LUAI_UACNUMBER double 466 467 #define LUA_NUMBER_FRMLEN "" 468 #define LUA_NUMBER_FMT "%.7g" 469 470 #define l_mathop(op) op##f 471 472 #define lua_str2number(s,p) strtof((s), (p)) 473 474 475 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 476 477 #define LUA_NUMBER long double 478 479 #define l_mathlim(n) (LDBL_##n) 480 481 #define LUAI_UACNUMBER long double 482 483 #define LUA_NUMBER_FRMLEN "L" 484 #define LUA_NUMBER_FMT "%.19Lg" 485 486 #define l_mathop(op) op##l 487 488 #define lua_str2number(s,p) strtold((s), (p)) 489 490 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 491 492 #define LUA_NUMBER double 493 494 #define l_mathlim(n) (DBL_##n) 495 496 #define LUAI_UACNUMBER double 497 498 #define LUA_NUMBER_FRMLEN "" 499 #define LUA_NUMBER_FMT "%.14g" 500 501 #define l_mathop(op) op 502 503 #define lua_str2number(s,p) strtod((s), (p)) 504 505 #else /* }{ */ 506 507 #error "numeric float type not defined" 508 509 #endif /* } */ 510 511 512 513 /* 514 @@ LUA_INTEGER is the integer type used by Lua. 515 ** 516 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 517 ** 518 @@ LUAI_UACINT is the result of a 'default argument promotion' 519 @@ over a lUA_INTEGER. 520 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 521 @@ LUA_INTEGER_FMT is the format for writing integers. 522 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 523 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 524 @@ lua_integer2str converts an integer to a string. 525 */ 526 527 528 /* The following definitions are good for most cases here */ 529 530 #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 531 532 #define LUAI_UACINT LUA_INTEGER 533 534 #define lua_integer2str(s,sz,n) \ 535 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 536 537 /* 538 ** use LUAI_UACINT here to avoid problems with promotions (which 539 ** can turn a comparison between unsigneds into a signed comparison) 540 */ 541 #define LUA_UNSIGNED unsigned LUAI_UACINT 542 543 544 /* now the variable definitions */ 545 546 #if LUA_INT_TYPE == LUA_INT_INT /* { int */ 547 548 #define LUA_INTEGER int 549 #define LUA_INTEGER_FRMLEN "" 550 551 #define LUA_MAXINTEGER INT_MAX 552 #define LUA_MININTEGER INT_MIN 553 554 #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 555 556 #define LUA_INTEGER long 557 #define LUA_INTEGER_FRMLEN "l" 558 559 #define LUA_MAXINTEGER LONG_MAX 560 #define LUA_MININTEGER LONG_MIN 561 562 #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 563 564 /* use presence of macro LLONG_MAX as proxy for C99 compliance */ 565 #if defined(LLONG_MAX) /* { */ 566 /* use ISO C99 stuff */ 567 568 #define LUA_INTEGER long long 569 #define LUA_INTEGER_FRMLEN "ll" 570 571 #define LUA_MAXINTEGER LLONG_MAX 572 #define LUA_MININTEGER LLONG_MIN 573 574 #elif defined(LUA_USE_WINDOWS) /* }{ */ 575 /* in Windows, can use specific Windows types */ 576 577 #define LUA_INTEGER __int64 578 #define LUA_INTEGER_FRMLEN "I64" 579 580 #define LUA_MAXINTEGER _I64_MAX 581 #define LUA_MININTEGER _I64_MIN 582 583 #else /* }{ */ 584 585 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 586 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 587 588 #endif /* } */ 589 590 #else /* }{ */ 591 592 #error "numeric integer type not defined" 593 594 #endif /* } */ 595 596 /* }================================================================== */ 597 598 599 /* 600 ** {================================================================== 601 ** Dependencies with C99 and other C details 602 ** =================================================================== 603 */ 604 605 /* 606 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 607 ** (All uses in Lua have only one format item.) 608 */ 609 #if !defined(LUA_USE_C89) 610 #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 611 #else 612 #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 613 #endif 614 615 616 /* 617 @@ lua_strx2number converts an hexadecimal numeric string to a number. 618 ** In C99, 'strtod' does that conversion. Otherwise, you can 619 ** leave 'lua_strx2number' undefined and Lua will provide its own 620 ** implementation. 621 */ 622 #if !defined(LUA_USE_C89) 623 #define lua_strx2number(s,p) lua_str2number(s,p) 624 #endif 625 626 627 /* 628 @@ lua_number2strx converts a float to an hexadecimal numeric string. 629 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 630 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 631 ** provide its own implementation. 632 */ 633 #if !defined(LUA_USE_C89) 634 #define lua_number2strx(L,b,sz,f,n) \ 635 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 636 #endif 637 638 639 /* 640 ** 'strtof' and 'opf' variants for math functions are not valid in 641 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 642 ** availability of these variants. ('math.h' is already included in 643 ** all files that use these macros.) 644 */ 645 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 646 #undef l_mathop /* variants not available */ 647 #undef lua_str2number 648 #define l_mathop(op) (lua_Number)op /* no variant */ 649 #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 650 #endif 651 652 653 /* 654 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 655 ** functions. It must be a numerical type; Lua will use 'intptr_t' if 656 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 657 ** 'intptr_t' in C89) 658 */ 659 #define LUA_KCONTEXT ptrdiff_t 660 661 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 662 __STDC_VERSION__ >= 199901L 663 #include <stdint.h> 664 #if defined(INTPTR_MAX) /* even in C99 this type is optional */ 665 #undef LUA_KCONTEXT 666 #define LUA_KCONTEXT intptr_t 667 #endif 668 #endif 669 670 671 /* 672 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 673 ** Change that if you do not want to use C locales. (Code using this 674 ** macro must include header 'locale.h'.) 675 */ 676 #if !defined(lua_getlocaledecpoint) 677 #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 678 #endif 679 680 /* }================================================================== */ 681 682 683 /* 684 ** {================================================================== 685 ** Language Variations 686 ** ===================================================================== 687 */ 688 689 /* 690 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 691 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 692 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 693 ** coercion from strings to numbers. 694 */ 695 /* #define LUA_NOCVTN2S */ 696 /* #define LUA_NOCVTS2N */ 697 698 699 /* 700 @@ LUA_USE_APICHECK turns on several consistency checks on the C API. 701 ** Define it as a help when debugging C code. 702 */ 703 #if defined(LUA_USE_APICHECK) 704 #include <assert.h> 705 #define luai_apicheck(l,e) assert(e) 706 #endif 707 708 /* }================================================================== */ 709 710 711 /* 712 ** {================================================================== 713 ** Macros that affect the API and must be stable (that is, must be the 714 ** same when you compile Lua and when you compile code that links to 715 ** Lua). You probably do not want/need to change them. 716 ** ===================================================================== 717 */ 718 719 /* 720 @@ LUAI_MAXSTACK limits the size of the Lua stack. 721 ** CHANGE it if you need a different limit. This limit is arbitrary; 722 ** its only purpose is to stop Lua from consuming unlimited stack 723 ** space (and to reserve some numbers for pseudo-indices). 724 */ 725 #if LUAI_BITSINT >= 32 726 #define LUAI_MAXSTACK 1000000 727 #else 728 #define LUAI_MAXSTACK 15000 729 #endif 730 731 732 /* 733 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with 734 ** a Lua state with very fast access. 735 ** CHANGE it if you need a different size. 736 */ 737 #define LUA_EXTRASPACE (sizeof(void *)) 738 739 740 /* 741 @@ LUA_IDSIZE gives the maximum size for the description of the source 742 @@ of a function in debug information. 743 ** CHANGE it if you want a different size. 744 */ 745 #define LUA_IDSIZE 60 746 747 748 /* 749 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 750 ** CHANGE it if it uses too much C-stack space. (For long double, 751 ** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a 752 ** smaller buffer would force a memory allocation for each call to 753 ** 'string.format'.) 754 */ 755 #if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE 756 #define LUAL_BUFFERSIZE 8192 757 #else 758 #define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) 759 #endif 760 761 /* }================================================================== */ 762 763 764 /* 765 @@ LUA_QL describes how error messages quote program elements. 766 ** Lua does not use these macros anymore; they are here for 767 ** compatibility only. 768 */ 769 #define LUA_QL(x) "'" x "'" 770 #define LUA_QS LUA_QL("%s") 771 772 773 774 775 /* =================================================================== */ 776 777 /* 778 ** Local configuration. You can use this space to add your redefinitions 779 ** without modifying the main part of the file. 780 */ 781 782 #ifdef _MSC_VER 783 /* Uninteresting "possible loss of data" and "cast truncates constant value" warnings */ 784 #pragma warning(disable: 4244 4310) 785 #endif 786 787 #if defined(__clang__) 788 #pragma clang diagnostic ignored "-Wconversion" 789 #pragma clang diagnostic ignored "-Wcomma" 790 #pragma clang diagnostic ignored "-Wstring-plus-int" 791 #endif 792 793 #endif 794 795