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 #if !defined(LUA_PATH_DEFAULT) 212 #define LUA_PATH_DEFAULT \ 213 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 214 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 215 "./?.lua;" "./?/init.lua" 216 #endif 217 #if !defined(LUA_CPATH_DEFAULT) 218 #define LUA_CPATH_DEFAULT \ 219 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 220 #endif 221 #endif /* } */ 222 223 224 /* 225 @@ LUA_DIRSEP is the directory separator (for submodules). 226 ** CHANGE it if your machine does not use "/" as the directory separator 227 ** and is not Windows. (On Windows Lua automatically uses "\".) 228 */ 229 #if defined(_WIN32) 230 #define LUA_DIRSEP "\\" 231 #else 232 #define LUA_DIRSEP "/" 233 #endif 234 235 /* }================================================================== */ 236 237 238 /* 239 ** {================================================================== 240 ** Marks for exported symbols in the C code 241 ** =================================================================== 242 */ 243 244 /* 245 @@ LUA_API is a mark for all core API functions. 246 @@ LUALIB_API is a mark for all auxiliary library functions. 247 @@ LUAMOD_API is a mark for all standard library opening functions. 248 ** CHANGE them if you need to define those functions in some special way. 249 ** For instance, if you want to create one Windows DLL with the core and 250 ** the libraries, you may want to use the following definition (define 251 ** LUA_BUILD_AS_DLL to get it). 252 */ 253 #if defined(LUA_BUILD_AS_DLL) /* { */ 254 255 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 256 #define LUA_API __declspec(dllexport) 257 #else /* }{ */ 258 #define LUA_API __declspec(dllimport) 259 #endif /* } */ 260 261 #else /* }{ */ 262 263 #define LUA_API extern 264 265 #endif /* } */ 266 267 268 /* more often than not the libs go together with the core */ 269 #define LUALIB_API LUA_API 270 #define LUAMOD_API LUALIB_API 271 272 273 /* 274 @@ LUAI_FUNC is a mark for all extern functions that are not to be 275 ** exported to outside modules. 276 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 277 ** that are not to be exported to outside modules (LUAI_DDEF for 278 ** definitions and LUAI_DDEC for declarations). 279 ** CHANGE them if you need to mark them in some special way. Elf/gcc 280 ** (versions 3.2 and later) mark them as "hidden" to optimize access 281 ** when Lua is compiled as a shared library. Not all elf targets support 282 ** this attribute. Unfortunately, gcc does not offer a way to check 283 ** whether the target offers that support, and those without support 284 ** give a warning about it. To avoid these warnings, change to the 285 ** default definition. 286 */ 287 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 288 defined(__ELF__) /* { */ 289 #define LUAI_FUNC __attribute__((visibility("hidden"))) extern 290 #else /* }{ */ 291 #define LUAI_FUNC extern 292 #endif /* } */ 293 294 #define LUAI_DDEC LUAI_FUNC 295 #define LUAI_DDEF /* empty */ 296 297 /* }================================================================== */ 298 299 300 /* 301 ** {================================================================== 302 ** Compatibility with previous versions 303 ** =================================================================== 304 */ 305 306 /* 307 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. 308 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. 309 ** You can define it to get all options, or change specific options 310 ** to fit your specific needs. 311 */ 312 #if defined(LUA_COMPAT_5_2) /* { */ 313 314 /* 315 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 316 ** functions in the mathematical library. 317 */ 318 #define LUA_COMPAT_MATHLIB 319 320 /* 321 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. 322 */ 323 #define LUA_COMPAT_BITLIB 324 325 /* 326 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. 327 */ 328 #define LUA_COMPAT_IPAIRS 329 330 /* 331 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 332 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 333 ** luaL_checkint, luaL_checklong, etc.) 334 */ 335 #define LUA_COMPAT_APIINTCASTS 336 337 #endif /* } */ 338 339 340 #if defined(LUA_COMPAT_5_1) /* { */ 341 342 /* Incompatibilities from 5.2 -> 5.3 */ 343 #define LUA_COMPAT_MATHLIB 344 #define LUA_COMPAT_APIINTCASTS 345 346 /* 347 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 348 ** You can replace it with 'table.unpack'. 349 */ 350 #define LUA_COMPAT_UNPACK 351 352 /* 353 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 354 ** You can replace it with 'package.searchers'. 355 */ 356 #define LUA_COMPAT_LOADERS 357 358 /* 359 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 360 ** You can call your C function directly (with light C functions). 361 */ 362 #define lua_cpcall(L,f,u) \ 363 (lua_pushcfunction(L, (f)), \ 364 lua_pushlightuserdata(L,(u)), \ 365 lua_pcall(L,1,0,0)) 366 367 368 /* 369 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 370 ** You can rewrite 'log10(x)' as 'log(x, 10)'. 371 */ 372 #define LUA_COMPAT_LOG10 373 374 /* 375 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 376 ** library. You can rewrite 'loadstring(s)' as 'load(s)'. 377 */ 378 #define LUA_COMPAT_LOADSTRING 379 380 /* 381 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 382 */ 383 #define LUA_COMPAT_MAXN 384 385 /* 386 @@ The following macros supply trivial compatibility for some 387 ** changes in the API. The macros themselves document how to 388 ** change your code to avoid using them. 389 */ 390 #define lua_strlen(L,i) lua_rawlen(L, (i)) 391 392 #define lua_objlen(L,i) lua_rawlen(L, (i)) 393 394 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 395 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 396 397 /* 398 @@ LUA_COMPAT_MODULE controls compatibility with previous 399 ** module functions 'module' (Lua) and 'luaL_register' (C). 400 */ 401 #define LUA_COMPAT_MODULE 402 403 #endif /* } */ 404 405 406 /* 407 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a 408 @@ a float mark ('.0'). 409 ** This macro is not on by default even in compatibility mode, 410 ** because this is not really an incompatibility. 411 */ 412 /* #define LUA_COMPAT_FLOATSTRING */ 413 414 /* }================================================================== */ 415 416 417 418 /* 419 ** {================================================================== 420 ** Configuration for Numbers. 421 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 422 ** satisfy your needs. 423 ** =================================================================== 424 */ 425 426 /* 427 @@ LUA_NUMBER is the floating-point type used by Lua. 428 @@ LUAI_UACNUMBER is the result of a 'default argument promotion' 429 @@ over a floating number. 430 @@ l_mathlim(x) corrects limit name 'x' to the proper float type 431 ** by prefixing it with one of FLT/DBL/LDBL. 432 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 433 @@ LUA_NUMBER_FMT is the format for writing floats. 434 @@ lua_number2str converts a float to a string. 435 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 436 @@ l_floor takes the floor of a float. 437 @@ lua_str2number converts a decimal numeric string to a number. 438 */ 439 440 441 /* The following definitions are good for most cases here */ 442 443 #define l_floor(x) (l_mathop(floor)(x)) 444 445 #define lua_number2str(s,sz,n) \ 446 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 447 448 /* 449 @@ lua_numbertointeger converts a float number to an integer, or 450 ** returns 0 if float is not within the range of a lua_Integer. 451 ** (The range comparisons are tricky because of rounding. The tests 452 ** here assume a two-complement representation, where MININTEGER always 453 ** has an exact representation as a float; MAXINTEGER may not have one, 454 ** and therefore its conversion to float may have an ill-defined value.) 455 */ 456 #define lua_numbertointeger(n,p) \ 457 ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ 458 (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ 459 (*(p) = (LUA_INTEGER)(n), 1)) 460 461 462 /* now the variable definitions */ 463 464 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 465 466 #define LUA_NUMBER float 467 468 #define l_mathlim(n) (FLT_##n) 469 470 #define LUAI_UACNUMBER double 471 472 #define LUA_NUMBER_FRMLEN "" 473 #define LUA_NUMBER_FMT "%.7g" 474 475 #define l_mathop(op) op##f 476 477 #define lua_str2number(s,p) strtof((s), (p)) 478 479 480 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 481 482 #define LUA_NUMBER long double 483 484 #define l_mathlim(n) (LDBL_##n) 485 486 #define LUAI_UACNUMBER long double 487 488 #define LUA_NUMBER_FRMLEN "L" 489 #define LUA_NUMBER_FMT "%.19Lg" 490 491 #define l_mathop(op) op##l 492 493 #define lua_str2number(s,p) strtold((s), (p)) 494 495 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 496 497 #define LUA_NUMBER double 498 499 #define l_mathlim(n) (DBL_##n) 500 501 #define LUAI_UACNUMBER double 502 503 #define LUA_NUMBER_FRMLEN "" 504 #define LUA_NUMBER_FMT "%.14g" 505 506 #define l_mathop(op) op 507 508 #define lua_str2number(s,p) strtod((s), (p)) 509 510 #else /* }{ */ 511 512 #error "numeric float type not defined" 513 514 #endif /* } */ 515 516 517 518 /* 519 @@ LUA_INTEGER is the integer type used by Lua. 520 ** 521 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 522 ** 523 @@ LUAI_UACINT is the result of a 'default argument promotion' 524 @@ over a lUA_INTEGER. 525 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 526 @@ LUA_INTEGER_FMT is the format for writing integers. 527 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 528 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 529 @@ lua_integer2str converts an integer to a string. 530 */ 531 532 533 /* The following definitions are good for most cases here */ 534 535 #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 536 537 #define LUAI_UACINT LUA_INTEGER 538 539 #define lua_integer2str(s,sz,n) \ 540 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 541 542 /* 543 ** use LUAI_UACINT here to avoid problems with promotions (which 544 ** can turn a comparison between unsigneds into a signed comparison) 545 */ 546 #define LUA_UNSIGNED unsigned LUAI_UACINT 547 548 549 /* now the variable definitions */ 550 551 #if LUA_INT_TYPE == LUA_INT_INT /* { int */ 552 553 #define LUA_INTEGER int 554 #define LUA_INTEGER_FRMLEN "" 555 556 #define LUA_MAXINTEGER INT_MAX 557 #define LUA_MININTEGER INT_MIN 558 559 #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 560 561 #define LUA_INTEGER long 562 #define LUA_INTEGER_FRMLEN "l" 563 564 #define LUA_MAXINTEGER LONG_MAX 565 #define LUA_MININTEGER LONG_MIN 566 567 #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 568 569 /* use presence of macro LLONG_MAX as proxy for C99 compliance */ 570 #if defined(LLONG_MAX) /* { */ 571 /* use ISO C99 stuff */ 572 573 #define LUA_INTEGER long long 574 #define LUA_INTEGER_FRMLEN "ll" 575 576 #define LUA_MAXINTEGER LLONG_MAX 577 #define LUA_MININTEGER LLONG_MIN 578 579 #elif defined(LUA_USE_WINDOWS) /* }{ */ 580 /* in Windows, can use specific Windows types */ 581 582 #define LUA_INTEGER __int64 583 #define LUA_INTEGER_FRMLEN "I64" 584 585 #define LUA_MAXINTEGER _I64_MAX 586 #define LUA_MININTEGER _I64_MIN 587 588 #else /* }{ */ 589 590 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 591 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 592 593 #endif /* } */ 594 595 #else /* }{ */ 596 597 #error "numeric integer type not defined" 598 599 #endif /* } */ 600 601 /* }================================================================== */ 602 603 604 /* 605 ** {================================================================== 606 ** Dependencies with C99 and other C details 607 ** =================================================================== 608 */ 609 610 /* 611 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 612 ** (All uses in Lua have only one format item.) 613 */ 614 #if !defined(LUA_USE_C89) 615 #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 616 #else 617 #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 618 #endif 619 620 621 /* 622 @@ lua_strx2number converts an hexadecimal numeric string to a number. 623 ** In C99, 'strtod' does that conversion. Otherwise, you can 624 ** leave 'lua_strx2number' undefined and Lua will provide its own 625 ** implementation. 626 */ 627 #if !defined(LUA_USE_C89) 628 #define lua_strx2number(s,p) lua_str2number(s,p) 629 #endif 630 631 632 /* 633 @@ lua_pointer2str converts a pointer to a readable string in a 634 ** non-specified way. 635 */ 636 #define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) 637 638 639 /* 640 @@ lua_number2strx converts a float to an hexadecimal numeric string. 641 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 642 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 643 ** provide its own implementation. 644 */ 645 #if !defined(LUA_USE_C89) 646 #define lua_number2strx(L,b,sz,f,n) \ 647 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 648 #endif 649 650 651 /* 652 ** 'strtof' and 'opf' variants for math functions are not valid in 653 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 654 ** availability of these variants. ('math.h' is already included in 655 ** all files that use these macros.) 656 */ 657 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 658 #undef l_mathop /* variants not available */ 659 #undef lua_str2number 660 #define l_mathop(op) (lua_Number)op /* no variant */ 661 #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 662 #endif 663 664 665 /* 666 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 667 ** functions. It must be a numerical type; Lua will use 'intptr_t' if 668 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 669 ** 'intptr_t' in C89) 670 */ 671 #define LUA_KCONTEXT ptrdiff_t 672 673 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 674 __STDC_VERSION__ >= 199901L 675 #include <stdint.h> 676 #if defined(INTPTR_MAX) /* even in C99 this type is optional */ 677 #undef LUA_KCONTEXT 678 #define LUA_KCONTEXT intptr_t 679 #endif 680 #endif 681 682 683 /* 684 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 685 ** Change that if you do not want to use C locales. (Code using this 686 ** macro must include header 'locale.h'.) 687 */ 688 #if !defined(lua_getlocaledecpoint) 689 #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 690 #endif 691 692 /* }================================================================== */ 693 694 695 /* 696 ** {================================================================== 697 ** Language Variations 698 ** ===================================================================== 699 */ 700 701 /* 702 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 703 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 704 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 705 ** coercion from strings to numbers. 706 */ 707 /* #define LUA_NOCVTN2S */ 708 /* #define LUA_NOCVTS2N */ 709 710 711 /* 712 @@ LUA_USE_APICHECK turns on several consistency checks on the C API. 713 ** Define it as a help when debugging C code. 714 */ 715 #if defined(LUA_USE_APICHECK) 716 #include <assert.h> 717 #define luai_apicheck(l,e) assert(e) 718 #endif 719 720 /* }================================================================== */ 721 722 723 /* 724 ** {================================================================== 725 ** Macros that affect the API and must be stable (that is, must be the 726 ** same when you compile Lua and when you compile code that links to 727 ** Lua). You probably do not want/need to change them. 728 ** ===================================================================== 729 */ 730 731 /* 732 @@ LUAI_MAXSTACK limits the size of the Lua stack. 733 ** CHANGE it if you need a different limit. This limit is arbitrary; 734 ** its only purpose is to stop Lua from consuming unlimited stack 735 ** space (and to reserve some numbers for pseudo-indices). 736 */ 737 #if LUAI_BITSINT >= 32 738 #define LUAI_MAXSTACK 1000000 739 #else 740 #define LUAI_MAXSTACK 15000 741 #endif 742 743 744 /* 745 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with 746 ** a Lua state with very fast access. 747 ** CHANGE it if you need a different size. 748 */ 749 #define LUA_EXTRASPACE (sizeof(void *)) 750 751 752 /* 753 @@ LUA_IDSIZE gives the maximum size for the description of the source 754 @@ of a function in debug information. 755 ** CHANGE it if you want a different size. 756 */ 757 #define LUA_IDSIZE 60 758 759 760 /* 761 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 762 ** CHANGE it if it uses too much C-stack space. (For long double, 763 ** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a 764 ** smaller buffer would force a memory allocation for each call to 765 ** 'string.format'.) 766 */ 767 #if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE 768 #define LUAL_BUFFERSIZE 8192 769 #else 770 #define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) 771 #endif 772 773 /* }================================================================== */ 774 775 776 /* 777 @@ LUA_QL describes how error messages quote program elements. 778 ** Lua does not use these macros anymore; they are here for 779 ** compatibility only. 780 */ 781 #define LUA_QL(x) "'" x "'" 782 #define LUA_QS LUA_QL("%s") 783 784 785 786 787 /* =================================================================== */ 788 789 /* 790 ** Local configuration. You can use this space to add your redefinitions 791 ** without modifying the main part of the file. 792 */ 793 794 795 796 797 798 #endif 799 800