| /* |
| ** $Id: luaconf.h $ |
| ** Configuration file for Lua |
| ** See Copyright Notice in lua.h |
| */ |
| |
| |
| #ifndef luaconf_h |
| #define luaconf_h |
| |
| #include <limits.h> |
| #include <stddef.h> |
| |
| |
| /* |
| ** =================================================================== |
| ** General Configuration File for Lua |
| ** |
| ** Some definitions here can be changed externally, through the compiler |
| ** (e.g., with '-D' options): They are commented out or protected |
| ** by '#if !defined' guards. However, several other definitions |
| ** should be changed directly here, either because they affect the |
| ** Lua ABI (by making the changes here, you ensure that all software |
| ** connected to Lua, such as C libraries, will be compiled with the same |
| ** configuration); or because they are seldom changed. |
| ** |
| ** Search for "@@" to find all configurable definitions. |
| ** =================================================================== |
| */ |
| |
| |
| /* |
| ** {==================================================================== |
| ** System Configuration: macros to adapt (if needed) Lua to some |
| ** particular platform, for instance restricting it to C89. |
| ** ===================================================================== |
| */ |
| |
| /* |
| @@ LUA_USE_C89 controls the use of non-ISO-C89 features. |
| ** Define it if you want Lua to avoid the use of a few C99 features |
| ** or Windows-specific features on Windows. |
| */ |
| /* #define LUA_USE_C89 */ |
| |
| |
| /* |
| ** By default, Lua on Windows use (some) specific Windows features |
| */ |
| #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) |
| #define LUA_USE_WINDOWS /* enable goodies for regular Windows */ |
| #endif |
| |
| |
| #if defined(LUA_USE_WINDOWS) |
| #define LUA_DL_DLL /* enable support for DLL */ |
| #define LUA_USE_C89 /* broadly, Windows is C89 */ |
| #endif |
| |
| |
| /* |
| ** When Posix DLL ('LUA_USE_DLOPEN') is enabled, the Lua stand-alone |
| ** application will try to dynamically link a 'readline' facility |
| ** for its REPL. In that case, LUA_READLINELIB is the name of the |
| ** library it will look for those facilities. If lua.c cannot open |
| ** the specified library, it will generate a warning and then run |
| ** without 'readline'. If that macro is not defined, lua.c will not |
| ** use 'readline'. |
| */ |
| #if defined(LUA_USE_LINUX) |
| #define LUA_USE_POSIX |
| #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ |
| #define LUA_READLINELIB "libreadline.so" |
| #endif |
| |
| |
| #if defined(LUA_USE_MACOSX) |
| #define LUA_USE_POSIX |
| #define LUA_USE_DLOPEN /* MacOS does not need -ldl */ |
| #define LUA_READLINELIB "libedit.dylib" |
| #endif |
| |
| |
| #if defined(LUA_USE_IOS) |
| #define LUA_USE_POSIX |
| #define LUA_USE_DLOPEN |
| #endif |
| |
| |
| /* |
| @@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits. |
| */ |
| #define LUAI_IS32INT ((UINT_MAX >> 30) >= 3) |
| |
| /* }================================================================== */ |
| |
| |
| |
| /* |
| ** {================================================================== |
| ** Configuration for Number types. These options should not be |
| ** set externally, because any other code connected to Lua must |
| ** use the same configuration. |
| ** =================================================================== |
| */ |
| |
| /* |
| @@ LUA_INT_TYPE defines the type for Lua integers. |
| @@ LUA_FLOAT_TYPE defines the type for Lua floats. |
| ** Lua should work fine with any mix of these options supported |
| ** by your C compiler. The usual configurations are 64-bit integers |
| ** and 'double' (the default), 32-bit integers and 'float' (for |
| ** restricted platforms), and 'long'/'double' (for C compilers not |
| ** compliant with C99, which may not have support for 'long long'). |
| */ |
| |
| /* predefined options for LUA_INT_TYPE */ |
| #define LUA_INT_INT 1 |
| #define LUA_INT_LONG 2 |
| #define LUA_INT_LONGLONG 3 |
| |
| /* predefined options for LUA_FLOAT_TYPE */ |
| #define LUA_FLOAT_FLOAT 1 |
| #define LUA_FLOAT_DOUBLE 2 |
| #define LUA_FLOAT_LONGDOUBLE 3 |
| |
| |
| /* Default configuration ('long long' and 'double', for 64-bit Lua) */ |
| #define LUA_INT_DEFAULT LUA_INT_LONGLONG |
| #define LUA_FLOAT_DEFAULT LUA_FLOAT_DOUBLE |
| |
| |
| /* |
| @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. |
| */ |
| #define LUA_32BITS 0 |
| |
| |
| /* |
| @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for |
| ** C89 ('long' and 'double'); Windows always has '__int64', so it does |
| ** not need to use this case. |
| */ |
| #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) |
| #define LUA_C89_NUMBERS 1 |
| #else |
| #define LUA_C89_NUMBERS 0 |
| #endif |
| |
| |
| #if LUA_32BITS /* { */ |
| /* |
| ** 32-bit integers and 'float' |
| */ |
| #if LUAI_IS32INT /* use 'int' if big enough */ |
| #define LUA_INT_TYPE LUA_INT_INT |
| #else /* otherwise use 'long' */ |
| #define LUA_INT_TYPE LUA_INT_LONG |
| #endif |
| #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT |
| |
| #elif LUA_C89_NUMBERS /* }{ */ |
| /* |
| ** largest types available for C89 ('long' and 'double') |
| */ |
| #define LUA_INT_TYPE LUA_INT_LONG |
| #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE |
| |
| #else /* }{ */ |
| /* use defaults */ |
| |
| #define LUA_INT_TYPE LUA_INT_DEFAULT |
| #define LUA_FLOAT_TYPE LUA_FLOAT_DEFAULT |
| |
| #endif /* } */ |
| |
| |
| /* }================================================================== */ |
| |
| |
| |
| /* |
| ** {================================================================== |
| ** Configuration for Paths. |
| ** =================================================================== |
| */ |
| |
| /* |
| ** LUA_PATH_SEP is the character that separates templates in a path. |
| ** LUA_PATH_MARK is the string that marks the substitution points in a |
| ** template. |
| ** LUA_EXEC_DIR in a Windows path is replaced by the executable's |
| ** directory. |
| */ |
| #define LUA_PATH_SEP ";" |
| #define LUA_PATH_MARK "?" |
| #define LUA_EXEC_DIR "!" |
| |
| |
| /* |
| @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for |
| ** Lua libraries. |
| @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for |
| ** C libraries. |
| ** CHANGE them if your machine has a non-conventional directory |
| ** hierarchy or if you want to install your libraries in |
| ** non-conventional directories. |
| */ |
| |
| #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR |
| #if defined(_WIN32) /* { */ |
| /* |
| ** In Windows, any exclamation mark ('!') in the path is replaced by the |
| ** path of the directory of the executable file of the current process. |
| */ |
| #define LUA_LDIR "!\\lua\\" |
| #define LUA_CDIR "!\\" |
| #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" |
| |
| #if !defined(LUA_PATH_DEFAULT) |
| #define LUA_PATH_DEFAULT \ |
| LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ |
| LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ |
| LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ |
| ".\\?.lua;" ".\\?\\init.lua" |
| #endif |
| |
| #if !defined(LUA_CPATH_DEFAULT) |
| #define LUA_CPATH_DEFAULT \ |
| LUA_CDIR"?.dll;" \ |
| LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ |
| LUA_CDIR"loadall.dll;" ".\\?.dll" |
| #endif |
| |
| #else /* }{ */ |
| |
| #define LUA_ROOT "/usr/local/" |
| #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" |
| #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" |
| |
| #if !defined(LUA_PATH_DEFAULT) |
| #define LUA_PATH_DEFAULT \ |
| LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ |
| LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ |
| "./?.lua;" "./?/init.lua" |
| #endif |
| |
| #if !defined(LUA_CPATH_DEFAULT) |
| #define LUA_CPATH_DEFAULT \ |
| LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" |
| #endif |
| |
| #endif /* } */ |
| |
| |
| /* |
| @@ LUA_DIRSEP is the directory separator (for submodules). |
| ** CHANGE it if your machine does not use "/" as the directory separator |
| ** and is not Windows. (On Windows Lua automatically uses "\".) |
| */ |
| #if !defined(LUA_DIRSEP) |
| |
| #if defined(_WIN32) |
| #define LUA_DIRSEP "\\" |
| #else |
| #define LUA_DIRSEP "/" |
| #endif |
| |
| #endif |
| |
| |
| /* |
| ** LUA_IGMARK is a mark to ignore all after it when building the |
| ** module name (e.g., used to build the luaopen_ function name). |
| ** Typically, the suffix after the mark is the module version, |
| ** as in "mod-v1.2.so". |
| */ |
| #define LUA_IGMARK "-" |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {================================================================== |
| ** Marks for exported symbols in the C code |
| ** =================================================================== |
| */ |
| |
| /* |
| @@ LUA_API is a mark for all core API functions. |
| @@ LUALIB_API is a mark for all auxiliary library functions. |
| @@ LUAMOD_API is a mark for all standard library opening functions. |
| ** CHANGE them if you need to define those functions in some special way. |
| ** For instance, if you want to create one Windows DLL with the core and |
| ** the libraries, you may want to use the following definition (define |
| ** LUA_BUILD_AS_DLL to get it). |
| */ |
| #if defined(LUA_BUILD_AS_DLL) /* { */ |
| |
| #if defined(LUA_CORE) || defined(LUA_LIB) /* { */ |
| #define LUA_API __declspec(dllexport) |
| #else /* }{ */ |
| #define LUA_API __declspec(dllimport) |
| #endif /* } */ |
| |
| #else /* }{ */ |
| |
| #define LUA_API extern |
| |
| #endif /* } */ |
| |
| |
| /* |
| ** More often than not the libs go together with the core. |
| */ |
| #define LUALIB_API LUA_API |
| #define LUAMOD_API LUA_API |
| |
| |
| /* |
| @@ LUAI_FUNC is a mark for all extern functions that are not to be |
| ** exported to outside modules. |
| @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables, |
| ** none of which to be exported to outside modules (LUAI_DDEF for |
| ** definitions and LUAI_DDEC for declarations). |
| ** CHANGE them if you need to mark them in some special way. Elf/gcc |
| ** (versions 3.2 and later) mark them as "hidden" to optimize access |
| ** when Lua is compiled as a shared library. Not all elf targets support |
| ** this attribute. Unfortunately, gcc does not offer a way to check |
| ** whether the target offers that support, and those without support |
| ** give a warning about it. To avoid these warnings, change to the |
| ** default definition. |
| */ |
| #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ |
| defined(__ELF__) /* { */ |
| #define LUAI_FUNC __attribute__((visibility("internal"))) extern |
| #else /* }{ */ |
| #define LUAI_FUNC extern |
| #endif /* } */ |
| |
| #define LUAI_DDEC(dec) LUAI_FUNC dec |
| #define LUAI_DDEF /* empty */ |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {================================================================== |
| ** Compatibility with previous versions |
| ** =================================================================== |
| */ |
| |
| /* |
| @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3. |
| ** You can define it to get all options, or change specific options |
| ** to fit your specific needs. |
| */ |
| #if defined(LUA_COMPAT_5_3) /* { */ |
| |
| /* |
| @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated |
| ** functions in the mathematical library. |
| ** (These functions were already officially removed in 5.3; |
| ** nevertheless they are still available here.) |
| */ |
| #define LUA_COMPAT_MATHLIB |
| |
| /* |
| @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for |
| ** manipulating other integer types (lua_pushunsigned, lua_tounsigned, |
| ** luaL_checkint, luaL_checklong, etc.) |
| ** (These macros were also officially removed in 5.3, but they are still |
| ** available here.) |
| */ |
| #define LUA_COMPAT_APIINTCASTS |
| |
| |
| /* |
| @@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod |
| ** using '__lt'. |
| */ |
| #define LUA_COMPAT_LT_LE |
| |
| |
| /* |
| @@ The following macros supply trivial compatibility for some |
| ** changes in the API. The macros themselves document how to |
| ** change your code to avoid using them. |
| ** (Once more, these macros were officially removed in 5.3, but they are |
| ** still available here.) |
| */ |
| #define lua_strlen(L,i) lua_rawlen(L, (i)) |
| |
| #define lua_objlen(L,i) lua_rawlen(L, (i)) |
| |
| #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) |
| #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) |
| |
| #endif /* } */ |
| |
| /* }================================================================== */ |
| |
| |
| |
| /* |
| ** {================================================================== |
| ** Configuration for Numbers (low-level part). |
| ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* |
| ** satisfy your needs. |
| ** =================================================================== |
| */ |
| |
| /* |
| @@ LUAI_UACNUMBER is the result of a 'default argument promotion' |
| @@ over a floating number. |
| @@ l_floatatt(x) corrects float attribute 'x' to the proper float type |
| ** by prefixing it with one of FLT/DBL/LDBL. |
| @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. |
| @@ LUA_NUMBER_FMT is the format for writing floats with the maximum |
| ** number of digits that respects tostring(tonumber(numeral)) == numeral. |
| ** (That would be floor(log10(2^n)), where n is the number of bits in |
| ** the float mantissa.) |
| @@ LUA_NUMBER_FMT_N is the format for writing floats with the minimum |
| ** number of digits that ensures tonumber(tostring(number)) == number. |
| ** (That would be LUA_NUMBER_FMT+2.) |
| @@ l_mathop allows the addition of an 'l' or 'f' to all math operations. |
| @@ l_floor takes the floor of a float. |
| @@ lua_str2number converts a decimal numeral to a number. |
| */ |
| |
| |
| /* The following definitions are good for most cases here */ |
| |
| #define l_floor(x) (l_mathop(floor)(x)) |
| |
| |
| /* |
| @@ lua_numbertointeger converts a float number with an integral value |
| ** to an integer, or returns 0 if float is not within the range of |
| ** a lua_Integer. (The range comparisons are tricky because of |
| ** rounding. The tests here assume a two-complement representation, |
| ** where MININTEGER always has an exact representation as a float; |
| ** MAXINTEGER may not have one, and therefore its conversion to float |
| ** may have an ill-defined value.) |
| */ |
| #define lua_numbertointeger(n,p) \ |
| ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ |
| (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ |
| (*(p) = (LUA_INTEGER)(n), 1)) |
| |
| |
| /* now the variable definitions */ |
| |
| #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ |
| |
| #define LUA_NUMBER float |
| |
| #define l_floatatt(n) (FLT_##n) |
| |
| #define LUAI_UACNUMBER double |
| |
| #define LUA_NUMBER_FRMLEN "" |
| #define LUA_NUMBER_FMT "%.7g" |
| #define LUA_NUMBER_FMT_N "%.9g" |
| |
| #define l_mathop(op) op##f |
| |
| #define lua_str2number(s,p) strtof((s), (p)) |
| |
| |
| #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ |
| |
| #define LUA_NUMBER long double |
| |
| #define l_floatatt(n) (LDBL_##n) |
| |
| #define LUAI_UACNUMBER long double |
| |
| #define LUA_NUMBER_FRMLEN "L" |
| #define LUA_NUMBER_FMT "%.19Lg" |
| #define LUA_NUMBER_FMT_N "%.21Lg" |
| |
| #define l_mathop(op) op##l |
| |
| #define lua_str2number(s,p) strtold((s), (p)) |
| |
| #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ |
| |
| #define LUA_NUMBER double |
| |
| #define l_floatatt(n) (DBL_##n) |
| |
| #define LUAI_UACNUMBER double |
| |
| #define LUA_NUMBER_FRMLEN "" |
| #define LUA_NUMBER_FMT "%.15g" |
| #define LUA_NUMBER_FMT_N "%.17g" |
| |
| #define l_mathop(op) op |
| |
| #define lua_str2number(s,p) strtod((s), (p)) |
| |
| #else /* }{ */ |
| |
| #error "numeric float type not defined" |
| |
| #endif /* } */ |
| |
| |
| |
| /* |
| @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. |
| @@ LUAI_UACINT is the result of a 'default argument promotion' |
| @@ over a LUA_INTEGER. |
| @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. |
| @@ LUA_INTEGER_FMT is the format for writing integers. |
| @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. |
| @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. |
| @@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED. |
| @@ lua_integer2str converts an integer to a string. |
| */ |
| |
| |
| /* The following definitions are good for most cases here */ |
| |
| #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" |
| |
| #define LUAI_UACINT LUA_INTEGER |
| |
| #define lua_integer2str(s,sz,n) \ |
| l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) |
| |
| /* |
| ** use LUAI_UACINT here to avoid problems with promotions (which |
| ** can turn a comparison between unsigneds into a signed comparison) |
| */ |
| #define LUA_UNSIGNED unsigned LUAI_UACINT |
| |
| |
| /* now the variable definitions */ |
| |
| #if LUA_INT_TYPE == LUA_INT_INT /* { int */ |
| |
| #define LUA_INTEGER int |
| #define LUA_INTEGER_FRMLEN "" |
| |
| #define LUA_MAXINTEGER INT_MAX |
| #define LUA_MININTEGER INT_MIN |
| |
| #define LUA_MAXUNSIGNED UINT_MAX |
| |
| #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ |
| |
| #define LUA_INTEGER long |
| #define LUA_INTEGER_FRMLEN "l" |
| |
| #define LUA_MAXINTEGER LONG_MAX |
| #define LUA_MININTEGER LONG_MIN |
| |
| #define LUA_MAXUNSIGNED ULONG_MAX |
| |
| #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ |
| |
| /* use presence of macro LLONG_MAX as proxy for C99 compliance */ |
| #if defined(LLONG_MAX) /* { */ |
| /* use ISO C99 stuff */ |
| |
| #define LUA_INTEGER long long |
| #define LUA_INTEGER_FRMLEN "ll" |
| |
| #define LUA_MAXINTEGER LLONG_MAX |
| #define LUA_MININTEGER LLONG_MIN |
| |
| #define LUA_MAXUNSIGNED ULLONG_MAX |
| |
| #elif defined(LUA_USE_WINDOWS) /* }{ */ |
| /* in Windows, can use specific Windows types */ |
| |
| #define LUA_INTEGER __int64 |
| #define LUA_INTEGER_FRMLEN "I64" |
| |
| #define LUA_MAXINTEGER _I64_MAX |
| #define LUA_MININTEGER _I64_MIN |
| |
| #define LUA_MAXUNSIGNED _UI64_MAX |
| |
| #else /* }{ */ |
| |
| #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ |
| or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" |
| |
| #endif /* } */ |
| |
| #else /* }{ */ |
| |
| #error "numeric integer type not defined" |
| |
| #endif /* } */ |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {================================================================== |
| ** Dependencies with C99 and other C details |
| ** =================================================================== |
| */ |
| |
| /* |
| @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. |
| ** (All uses in Lua have only one format item.) |
| */ |
| #if !defined(LUA_USE_C89) |
| #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) |
| #else |
| #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) |
| #endif |
| |
| |
| /* |
| @@ lua_strx2number converts a hexadecimal numeral to a number. |
| ** In C99, 'strtod' does that conversion. Otherwise, you can |
| ** leave 'lua_strx2number' undefined and Lua will provide its own |
| ** implementation. |
| */ |
| #if !defined(LUA_USE_C89) |
| #define lua_strx2number(s,p) lua_str2number(s,p) |
| #endif |
| |
| |
| /* |
| @@ lua_pointer2str converts a pointer to a readable string in a |
| ** non-specified way. |
| */ |
| #define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) |
| |
| |
| /* |
| @@ lua_number2strx converts a float to a hexadecimal numeral. |
| ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. |
| ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will |
| ** provide its own implementation. |
| */ |
| #if !defined(LUA_USE_C89) |
| #define lua_number2strx(L,b,sz,f,n) \ |
| ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) |
| #endif |
| |
| |
| /* |
| ** 'strtof' and 'opf' variants for math functions are not valid in |
| ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the |
| ** availability of these variants. ('math.h' is already included in |
| ** all files that use these macros.) |
| */ |
| #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) |
| #undef l_mathop /* variants not available */ |
| #undef lua_str2number |
| #define l_mathop(op) (lua_Number)op /* no variant */ |
| #define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) |
| #endif |
| |
| |
| /* |
| @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation |
| ** functions. It must be a numerical type; Lua will use 'intptr_t' if |
| ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to |
| ** 'intptr_t' in C89) |
| */ |
| #define LUA_KCONTEXT ptrdiff_t |
| |
| #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ |
| __STDC_VERSION__ >= 199901L |
| #include <stdint.h> |
| #if defined(INTPTR_MAX) /* even in C99 this type is optional */ |
| #undef LUA_KCONTEXT |
| #define LUA_KCONTEXT intptr_t |
| #endif |
| #endif |
| |
| |
| /* |
| @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). |
| ** Change that if you do not want to use C locales. (Code using this |
| ** macro must include the header 'locale.h'.) |
| */ |
| #if !defined(lua_getlocaledecpoint) |
| #define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) |
| #endif |
| |
| |
| /* |
| ** macros to improve jump prediction, used mostly for error handling |
| ** and debug facilities. (Some macros in the Lua API use these macros. |
| ** Define LUA_NOBUILTIN if you do not want '__builtin_expect' in your |
| ** code.) |
| */ |
| #if !defined(luai_likely) |
| |
| #if defined(__GNUC__) && !defined(LUA_NOBUILTIN) |
| #define luai_likely(x) (__builtin_expect(((x) != 0), 1)) |
| #define luai_unlikely(x) (__builtin_expect(((x) != 0), 0)) |
| #else |
| #define luai_likely(x) (x) |
| #define luai_unlikely(x) (x) |
| #endif |
| |
| #endif |
| |
| |
| #if defined(LUA_CORE) || defined(LUA_LIB) |
| /* shorter names for Lua's own use */ |
| #define l_likely(x) luai_likely(x) |
| #define l_unlikely(x) luai_unlikely(x) |
| #endif |
| |
| |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {================================================================== |
| ** Language Variations |
| ** ===================================================================== |
| */ |
| |
| /* |
| @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some |
| ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from |
| ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic |
| ** coercion from strings to numbers. |
| */ |
| /* #define LUA_NOCVTN2S */ |
| /* #define LUA_NOCVTS2N */ |
| |
| |
| /* |
| @@ LUA_USE_APICHECK turns on several consistency checks on the C API. |
| ** Define it as a help when debugging C code. |
| */ |
| /* #define LUA_USE_APICHECK */ |
| |
| /* }================================================================== */ |
| |
| |
| /* |
| ** {================================================================== |
| ** Macros that affect the API and must be stable (that is, must be the |
| ** same when you compile Lua and when you compile code that links to |
| ** Lua). |
| ** ===================================================================== |
| */ |
| |
| /* |
| @@ LUAI_MAXSTACK limits the size of the Lua stack. |
| ** CHANGE it if you need a different limit. This limit is arbitrary; |
| ** its only purpose is to stop Lua from consuming unlimited stack |
| ** space and to reserve some numbers for pseudo-indices. |
| ** (It must fit into max(int)/2.) |
| */ |
| #if 1000000 < (INT_MAX / 2) |
| #define LUAI_MAXSTACK 1000000 |
| #else |
| #define LUAI_MAXSTACK (INT_MAX / 2u) |
| #endif |
| |
| |
| /* |
| @@ LUA_EXTRASPACE defines the size of a raw memory area associated with |
| ** a Lua state with very fast access. |
| ** CHANGE it if you need a different size. |
| */ |
| #define LUA_EXTRASPACE (sizeof(void *)) |
| |
| |
| /* |
| @@ LUA_IDSIZE gives the maximum size for the description of the source |
| ** of a function in debug information. |
| ** CHANGE it if you want a different size. |
| */ |
| #define LUA_IDSIZE 60 |
| |
| |
| /* |
| @@ LUAL_BUFFERSIZE is the initial buffer size used by the lauxlib |
| ** buffer system. |
| */ |
| #define LUAL_BUFFERSIZE ((int)(16 * sizeof(void*) * sizeof(lua_Number))) |
| |
| |
| /* |
| @@ LUAI_MAXALIGN defines fields that, when used in a union, ensure |
| ** maximum alignment for the other items in that union. |
| */ |
| #define LUAI_MAXALIGN lua_Number n; double u; void *s; lua_Integer i; long l |
| |
| /* }================================================================== */ |
| |
| |
| |
| |
| |
| /* =================================================================== */ |
| |
| /* |
| ** Local configuration. You can use this space to add your redefinitions |
| ** without modifying the main part of the file. |
| */ |
| |
| |
| |
| |
| |
| #endif |
| |