1/* $FreeBSD: stable/11/libexec/flua/luaconf.h 354833 2019-11-18 23:21:13Z kevans $ */ 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