1 /* $FreeBSD$ */ 2 /* 3 ** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $ 4 ** Configuration file for Lua 5 ** See Copyright Notice in lua.h 6 */ 7 8 9 #ifndef luaconf_h 10 #define luaconf_h 11 12 #include <limits.h> 13 #include <stddef.h> 14 15 16 /* 17 ** =================================================================== 18 ** Search for "@@" to find all configurable definitions. 19 ** =================================================================== 20 */ 21 22 23 /* 24 ** {==================================================================== 25 ** System Configuration: macros to adapt (if needed) Lua to some 26 ** particular platform, for instance compiling it with 32-bit numbers or 27 ** restricting it to C89. 28 ** ===================================================================== 29 */ 30 31 /* 32 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You 33 ** can also define LUA_32BITS in the make file, but changing here you 34 ** ensure that all software connected to Lua will be compiled with the 35 ** same configuration. 36 */ 37 /* #define LUA_32BITS */ 38 39 40 /* 41 @@ LUA_USE_C89 controls the use of non-ISO-C89 features. 42 ** Define it if you want Lua to avoid the use of a few C99 features 43 ** or Windows-specific features on Windows. 44 */ 45 /* #define LUA_USE_C89 */ 46 47 48 /* 49 ** By default, Lua on Windows use (some) specific Windows features 50 */ 51 #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) 52 #define LUA_USE_WINDOWS /* enable goodies for regular Windows */ 53 #endif 54 55 56 #if defined(LUA_USE_WINDOWS) 57 #define LUA_DL_DLL /* enable support for DLL */ 58 #define LUA_USE_C89 /* broadly, Windows is C89 */ 59 #endif 60 61 62 #if defined(LUA_USE_LINUX) 63 #define LUA_USE_POSIX 64 #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 65 #define LUA_USE_READLINE /* needs some extra libraries */ 66 #endif 67 68 69 #if defined(LUA_USE_MACOSX) 70 #define LUA_USE_POSIX 71 #define LUA_USE_DLOPEN /* MacOS does not need -ldl */ 72 #define LUA_USE_READLINE /* needs an extra library: -lreadline */ 73 #endif 74 75 /* Local modifications: need io.popen */ 76 #ifdef __FreeBSD__ 77 #define LUA_USE_POSIX 78 #endif 79 80 /* 81 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for 82 ** C89 ('long' and 'double'); Windows always has '__int64', so it does 83 ** not need to use this case. 84 */ 85 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) 86 #define LUA_C89_NUMBERS 87 #endif 88 89 90 91 /* 92 @@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. 93 */ 94 /* avoid undefined shifts */ 95 #if ((INT_MAX >> 15) >> 15) >= 1 96 #define LUAI_BITSINT 32 97 #else 98 /* 'int' always must have at least 16 bits */ 99 #define LUAI_BITSINT 16 100 #endif 101 102 103 /* 104 @@ LUA_INT_TYPE defines the type for Lua integers. 105 @@ LUA_FLOAT_TYPE defines the type for Lua floats. 106 ** Lua should work fine with any mix of these options (if supported 107 ** by your C compiler). The usual configurations are 64-bit integers 108 ** and 'double' (the default), 32-bit integers and 'float' (for 109 ** restricted platforms), and 'long'/'double' (for C compilers not 110 ** compliant with C99, which may not have support for 'long long'). 111 */ 112 113 /* predefined options for LUA_INT_TYPE */ 114 #define LUA_INT_INT 1 115 #define LUA_INT_LONG 2 116 #define LUA_INT_LONGLONG 3 117 118 /* predefined options for LUA_FLOAT_TYPE */ 119 #define LUA_FLOAT_FLOAT 1 120 #define LUA_FLOAT_DOUBLE 2 121 #define LUA_FLOAT_LONGDOUBLE 3 122 123 #if defined(LUA_32BITS) /* { */ 124 /* 125 ** 32-bit integers and 'float' 126 */ 127 #if LUAI_BITSINT >= 32 /* use 'int' if big enough */ 128 #define LUA_INT_TYPE LUA_INT_INT 129 #else /* otherwise use 'long' */ 130 #define LUA_INT_TYPE LUA_INT_LONG 131 #endif 132 #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT 133 134 #elif defined(LUA_C89_NUMBERS) /* }{ */ 135 /* 136 ** largest types available for C89 ('long' and 'double') 137 */ 138 #define LUA_INT_TYPE LUA_INT_LONG 139 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 140 141 #endif /* } */ 142 143 144 /* 145 ** default configuration for 64-bit Lua ('long long' and 'double') 146 */ 147 #if !defined(LUA_INT_TYPE) 148 #define LUA_INT_TYPE LUA_INT_LONGLONG 149 #endif 150 151 #if !defined(LUA_FLOAT_TYPE) 152 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 153 #endif 154 155 /* }================================================================== */ 156 157 158 159 160 /* 161 ** {================================================================== 162 ** Configuration for Paths. 163 ** =================================================================== 164 */ 165 166 /* 167 ** LUA_PATH_SEP is the character that separates templates in a path. 168 ** LUA_PATH_MARK is the string that marks the substitution points in a 169 ** template. 170 ** LUA_EXEC_DIR in a Windows path is replaced by the executable's 171 ** directory. 172 */ 173 #define LUA_PATH_SEP ";" 174 #define LUA_PATH_MARK "?" 175 #define LUA_EXEC_DIR "!" 176 177 178 /* 179 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 180 ** Lua libraries. 181 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 182 ** C libraries. 183 ** CHANGE them if your machine has a non-conventional directory 184 ** hierarchy or if you want to install your libraries in 185 ** non-conventional directories. 186 */ 187 #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 188 #if defined(_WIN32) /* { */ 189 /* 190 ** In Windows, any exclamation mark ('!') in the path is replaced by the 191 ** path of the directory of the executable file of the current process. 192 */ 193 #define LUA_LDIR "!\\lua\\" 194 #define LUA_CDIR "!\\" 195 #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" 196 #define LUA_PATH_DEFAULT \ 197 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 198 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ 199 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ 200 ".\\?.lua;" ".\\?\\init.lua" 201 #define LUA_CPATH_DEFAULT \ 202 LUA_CDIR"?.dll;" \ 203 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ 204 LUA_CDIR"loadall.dll;" ".\\?.dll" 205 206 #else /* }{ */ 207 208 #define LUA_ROOT "/usr/local/" 209 #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" 210 #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" 211 #define LUA_PATH_DEFAULT \ 212 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 213 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 214 "./?.lua;" "./?/init.lua" 215 #define LUA_CPATH_DEFAULT \ 216 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 217 #endif /* } */ 218 219 220 /* 221 @@ LUA_DIRSEP is the directory separator (for submodules). 222 ** CHANGE it if your machine does not use "/" as the directory separator 223 ** and is not Windows. (On Windows Lua automatically uses "\".) 224 */ 225 #if defined(_WIN32) 226 #define LUA_DIRSEP "\\" 227 #else 228 #define LUA_DIRSEP "/" 229 #endif 230 231 /* }================================================================== */ 232 233 234 /* 235 ** {================================================================== 236 ** Marks for exported symbols in the C code 237 ** =================================================================== 238 */ 239 240 /* 241 @@ LUA_API is a mark for all core API functions. 242 @@ LUALIB_API is a mark for all auxiliary library functions. 243 @@ LUAMOD_API is a mark for all standard library opening functions. 244 ** CHANGE them if you need to define those functions in some special way. 245 ** For instance, if you want to create one Windows DLL with the core and 246 ** the libraries, you may want to use the following definition (define 247 ** LUA_BUILD_AS_DLL to get it). 248 */ 249 #if defined(LUA_BUILD_AS_DLL) /* { */ 250 251 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 252 #define LUA_API __declspec(dllexport) 253 #else /* }{ */ 254 #define LUA_API __declspec(dllimport) 255 #endif /* } */ 256 257 #else /* }{ */ 258 259 #define LUA_API extern 260 261 #endif /* } */ 262 263 264 /* more often than not the libs go together with the core */ 265 #define LUALIB_API LUA_API 266 #define LUAMOD_API LUALIB_API 267 268 269 /* 270 @@ LUAI_FUNC is a mark for all extern functions that are not to be 271 ** exported to outside modules. 272 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 273 ** that are not to be exported to outside modules (LUAI_DDEF for 274 ** definitions and LUAI_DDEC for declarations). 275 ** CHANGE them if you need to mark them in some special way. Elf/gcc 276 ** (versions 3.2 and later) mark them as "hidden" to optimize access 277 ** when Lua is compiled as a shared library. Not all elf targets support 278 ** this attribute. Unfortunately, gcc does not offer a way to check 279 ** whether the target offers that support, and those without support 280 ** give a warning about it. To avoid these warnings, change to the 281 ** default definition. 282 */ 283 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 284 defined(__ELF__) /* { */ 285 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 286 #else /* }{ */ 287 #define LUAI_FUNC extern 288 #endif /* } */ 289 290 #define LUAI_DDEC LUAI_FUNC 291 #define LUAI_DDEF /* empty */ 292 293 /* }================================================================== */ 294 295 296 /* 297 ** {================================================================== 298 ** Compatibility with previous versions 299 ** =================================================================== 300 */ 301 302 /* 303 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. 304 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. 305 ** You can define it to get all options, or change specific options 306 ** to fit your specific needs. 307 */ 308 #if defined(LUA_COMPAT_5_2) /* { */ 309 310 /* 311 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 312 ** functions in the mathematical library. 313 */ 314 #define LUA_COMPAT_MATHLIB 315 316 /* 317 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. 318 */ 319 #define LUA_COMPAT_BITLIB 320 321 /* 322 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. 323 */ 324 #define LUA_COMPAT_IPAIRS 325 326 /* 327 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 328 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 329 ** luaL_checkint, luaL_checklong, etc.) 330 */ 331 #define LUA_COMPAT_APIINTCASTS 332 333 #endif /* } */ 334 335 336 #if defined(LUA_COMPAT_5_1) /* { */ 337 338 /* Incompatibilities from 5.2 -> 5.3 */ 339 #define LUA_COMPAT_MATHLIB 340 #define LUA_COMPAT_APIINTCASTS 341 342 /* 343 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 344 ** You can replace it with 'table.unpack'. 345 */ 346 #define LUA_COMPAT_UNPACK 347 348 /* 349 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 350 ** You can replace it with 'package.searchers'. 351 */ 352 #define LUA_COMPAT_LOADERS 353 354 /* 355 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 356 ** You can call your C function directly (with light C functions). 357 */ 358 #define lua_cpcall(L,f,u) \ 359 (lua_pushcfunction(L, (f)), \ 360 lua_pushlightuserdata(L,(u)), \ 361 lua_pcall(L,1,0,0)) 362 363 364 /* 365 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 366 ** You can rewrite 'log10(x)' as 'log(x, 10)'. 367 */ 368 #define LUA_COMPAT_LOG10 369 370 /* 371 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 372 ** library. You can rewrite 'loadstring(s)' as 'load(s)'. 373 */ 374 #define LUA_COMPAT_LOADSTRING 375 376 /* 377 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 378 */ 379 #define LUA_COMPAT_MAXN 380 381 /* 382 @@ The following macros supply trivial compatibility for some 383 ** changes in the API. The macros themselves document how to 384 ** change your code to avoid using them. 385 */ 386 #define lua_strlen(L,i) lua_rawlen(L, (i)) 387 388 #define lua_objlen(L,i) lua_rawlen(L, (i)) 389 390 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 391 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 392 393 /* 394 @@ LUA_COMPAT_MODULE controls compatibility with previous 395 ** module functions 'module' (Lua) and 'luaL_register' (C). 396 */ 397 #define LUA_COMPAT_MODULE 398 399 #endif /* } */ 400 401 402 /* 403 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a 404 @@ a float mark ('.0'). 405 ** This macro is not on by default even in compatibility mode, 406 ** because this is not really an incompatibility. 407 */ 408 /* #define LUA_COMPAT_FLOATSTRING */ 409 410 /* }================================================================== */ 411 412 413 414 /* 415 ** {================================================================== 416 ** Configuration for Numbers. 417 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 418 ** satisfy your needs. 419 ** =================================================================== 420 */ 421 422 /* 423 @@ LUA_NUMBER is the floating-point type used by Lua. 424 @@ LUAI_UACNUMBER is the result of a 'default argument promotion' 425 @@ over a floating number. 426 @@ l_mathlim(x) corrects limit name 'x' to the proper float type 427 ** by prefixing it with one of FLT/DBL/LDBL. 428 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 429 @@ LUA_NUMBER_FMT is the format for writing floats. 430 @@ lua_number2str converts a float to a string. 431 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 432 @@ l_floor takes the floor of a float. 433 @@ lua_str2number converts a decimal numeric string to a number. 434 */ 435 436 437 /* The following definitions are good for most cases here */ 438 439 #define l_floor(x) (l_mathop(floor)(x)) 440 441 #define lua_number2str(s,sz,n) \ 442 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 443 444 /* 445 @@ lua_numbertointeger converts a float number to an integer, or 446 ** returns 0 if float is not within the range of a lua_Integer. 447 ** (The range comparisons are tricky because of rounding. The tests 448 ** here assume a two-complement representation, where MININTEGER always 449 ** has an exact representation as a float; MAXINTEGER may not have one, 450 ** and therefore its conversion to float may have an ill-defined value.) 451 */ 452 #define lua_numbertointeger(n,p) \ 453 ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ 454 (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ 455 (*(p) = (LUA_INTEGER)(n), 1)) 456 457 458 /* now the variable definitions */ 459 460 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 461 462 #define LUA_NUMBER float 463 464 #define l_mathlim(n) (FLT_##n) 465 466 #define LUAI_UACNUMBER double 467 468 #define LUA_NUMBER_FRMLEN "" 469 #define LUA_NUMBER_FMT "%.7g" 470 471 #define l_mathop(op) op##f 472 473 #define lua_str2number(s,p) strtof((s), (p)) 474 475 476 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 477 478 #define LUA_NUMBER long double 479 480 #define l_mathlim(n) (LDBL_##n) 481 482 #define LUAI_UACNUMBER long double 483 484 #define LUA_NUMBER_FRMLEN "L" 485 #define LUA_NUMBER_FMT "%.19Lg" 486 487 #define l_mathop(op) op##l 488 489 #define lua_str2number(s,p) strtold((s), (p)) 490 491 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 492 493 #define LUA_NUMBER double 494 495 #define l_mathlim(n) (DBL_##n) 496 497 #define LUAI_UACNUMBER double 498 499 #define LUA_NUMBER_FRMLEN "" 500 #define LUA_NUMBER_FMT "%.14g" 501 502 #define l_mathop(op) op 503 504 #define lua_str2number(s,p) strtod((s), (p)) 505 506 #else /* }{ */ 507 508 #error "numeric float type not defined" 509 510 #endif /* } */ 511 512 513 514 /* 515 @@ LUA_INTEGER is the integer type used by Lua. 516 ** 517 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 518 ** 519 @@ LUAI_UACINT is the result of a 'default argument promotion' 520 @@ over a lUA_INTEGER. 521 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 522 @@ LUA_INTEGER_FMT is the format for writing integers. 523 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 524 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 525 @@ lua_integer2str converts an integer to a string. 526 */ 527 528 529 /* The following definitions are good for most cases here */ 530 531 #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 532 533 #define LUAI_UACINT LUA_INTEGER 534 535 #define lua_integer2str(s,sz,n) \ 536 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 537 538 /* 539 ** use LUAI_UACINT here to avoid problems with promotions (which 540 ** can turn a comparison between unsigneds into a signed comparison) 541 */ 542 #define LUA_UNSIGNED unsigned LUAI_UACINT 543 544 545 /* now the variable definitions */ 546 547 #if LUA_INT_TYPE == LUA_INT_INT /* { int */ 548 549 #define LUA_INTEGER int 550 #define LUA_INTEGER_FRMLEN "" 551 552 #define LUA_MAXINTEGER INT_MAX 553 #define LUA_MININTEGER INT_MIN 554 555 #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 556 557 #define LUA_INTEGER long 558 #define LUA_INTEGER_FRMLEN "l" 559 560 #define LUA_MAXINTEGER LONG_MAX 561 #define LUA_MININTEGER LONG_MIN 562 563 #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 564 565 /* use presence of macro LLONG_MAX as proxy for C99 compliance */ 566 #if defined(LLONG_MAX) /* { */ 567 /* use ISO C99 stuff */ 568 569 #define LUA_INTEGER long long 570 #define LUA_INTEGER_FRMLEN "ll" 571 572 #define LUA_MAXINTEGER LLONG_MAX 573 #define LUA_MININTEGER LLONG_MIN 574 575 #elif defined(LUA_USE_WINDOWS) /* }{ */ 576 /* in Windows, can use specific Windows types */ 577 578 #define LUA_INTEGER __int64 579 #define LUA_INTEGER_FRMLEN "I64" 580 581 #define LUA_MAXINTEGER _I64_MAX 582 #define LUA_MININTEGER _I64_MIN 583 584 #else /* }{ */ 585 586 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 587 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 588 589 #endif /* } */ 590 591 #else /* }{ */ 592 593 #error "numeric integer type not defined" 594 595 #endif /* } */ 596 597 /* }================================================================== */ 598 599 600 /* 601 ** {================================================================== 602 ** Dependencies with C99 and other C details 603 ** =================================================================== 604 */ 605 606 /* 607 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 608 ** (All uses in Lua have only one format item.) 609 */ 610 #if !defined(LUA_USE_C89) 611 #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 612 #else 613 #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 614 #endif 615 616 617 /* 618 @@ lua_strx2number converts an hexadecimal numeric string to a number. 619 ** In C99, 'strtod' does that conversion. Otherwise, you can 620 ** leave 'lua_strx2number' undefined and Lua will provide its own 621 ** implementation. 622 */ 623 #if !defined(LUA_USE_C89) 624 #define lua_strx2number(s,p) lua_str2number(s,p) 625 #endif 626 627 628 /* 629 @@ lua_pointer2str converts a pointer to a readable string in a 630 ** non-specified way. 631 */ 632 #define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) 633 634 635 /* 636 @@ lua_number2strx converts a float to an hexadecimal numeric string. 637 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 638 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 639 ** provide its own implementation. 640 */ 641 #if !defined(LUA_USE_C89) 642 #define lua_number2strx(L,b,sz,f,n) \ 643 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 644 #endif 645 646 647 /* 648 ** 'strtof' and 'opf' variants for math functions are not valid in 649 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 650 ** availability of these variants. ('math.h' is already included in 651 ** all files that use these macros.) 652 */ 653 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 654 #undef l_mathop /* variants not available */ 655 #undef lua_str2number 656 #define l_mathop(op) (lua_Number)op /* no variant */ 657 #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 658 #endif 659 660 661 /* 662 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 663 ** functions. It must be a numerical type; Lua will use 'intptr_t' if 664 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 665 ** 'intptr_t' in C89) 666 */ 667 #define LUA_KCONTEXT ptrdiff_t 668 669 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 670 __STDC_VERSION__ >= 199901L 671 #include <stdint.h> 672 #if defined(INTPTR_MAX) /* even in C99 this type is optional */ 673 #undef LUA_KCONTEXT 674 #define LUA_KCONTEXT intptr_t 675 #endif 676 #endif 677 678 679 /* 680 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 681 ** Change that if you do not want to use C locales. (Code using this 682 ** macro must include header 'locale.h'.) 683 */ 684 #if !defined(lua_getlocaledecpoint) 685 #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 686 #endif 687 688 /* }================================================================== */ 689 690 691 /* 692 ** {================================================================== 693 ** Language Variations 694 ** ===================================================================== 695 */ 696 697 /* 698 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 699 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 700 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 701 ** coercion from strings to numbers. 702 */ 703 /* #define LUA_NOCVTN2S */ 704 /* #define LUA_NOCVTS2N */ 705 706 707 /* 708 @@ LUA_USE_APICHECK turns on several consistency checks on the C API. 709 ** Define it as a help when debugging C code. 710 */ 711 #if defined(LUA_USE_APICHECK) 712 #include <assert.h> 713 #define luai_apicheck(l,e) assert(e) 714 #endif 715 716 /* }================================================================== */ 717 718 719 /* 720 ** {================================================================== 721 ** Macros that affect the API and must be stable (that is, must be the 722 ** same when you compile Lua and when you compile code that links to 723 ** Lua). You probably do not want/need to change them. 724 ** ===================================================================== 725 */ 726 727 /* 728 @@ LUAI_MAXSTACK limits the size of the Lua stack. 729 ** CHANGE it if you need a different limit. This limit is arbitrary; 730 ** its only purpose is to stop Lua from consuming unlimited stack 731 ** space (and to reserve some numbers for pseudo-indices). 732 */ 733 #if LUAI_BITSINT >= 32 734 #define LUAI_MAXSTACK 1000000 735 #else 736 #define LUAI_MAXSTACK 15000 737 #endif 738 739 740 /* 741 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with 742 ** a Lua state with very fast access. 743 ** CHANGE it if you need a different size. 744 */ 745 #define LUA_EXTRASPACE (sizeof(void *)) 746 747 748 /* 749 @@ LUA_IDSIZE gives the maximum size for the description of the source 750 @@ of a function in debug information. 751 ** CHANGE it if you want a different size. 752 */ 753 #define LUA_IDSIZE 60 754 755 756 /* 757 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 758 ** CHANGE it if it uses too much C-stack space. (For long double, 759 ** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a 760 ** smaller buffer would force a memory allocation for each call to 761 ** 'string.format'.) 762 */ 763 #if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE 764 #define LUAL_BUFFERSIZE 8192 765 #else 766 #define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) 767 #endif 768 769 /* }================================================================== */ 770 771 772 /* 773 @@ LUA_QL describes how error messages quote program elements. 774 ** Lua does not use these macros anymore; they are here for 775 ** compatibility only. 776 */ 777 #define LUA_QL(x) "'" x "'" 778 #define LUA_QS LUA_QL("%s") 779 780 781 782 783 /* =================================================================== */ 784 785 /* 786 ** Local configuration. You can use this space to add your redefinitions 787 ** without modifying the main part of the file. 788 */ 789 790 791 792 793 794 #endif 795 796