[28] | 1 | /* |
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| 2 | ** $Id: luaconf.h,v 1.82.1.6 2008/01/18 17:07:48 roberto Exp $ |
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| 3 | ** Configuration file for Lua |
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| 4 | ** See Copyright Notice in lua.h |
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| 5 | */ |
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| 6 | |
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| 7 | |
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| 8 | #ifndef lconfig_h |
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| 9 | #define lconfig_h |
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| 10 | |
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| 11 | #include <limits.h> |
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| 12 | #include <stddef.h> |
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| 13 | |
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| 14 | |
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| 15 | /* |
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| 16 | ** ================================================================== |
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| 17 | ** Search for "@@" to find all configurable definitions. |
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| 18 | ** =================================================================== |
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| 19 | */ |
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| 20 | |
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| 21 | |
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| 22 | /* |
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| 23 | @@ LUA_ANSI controls the use of non-ansi features. |
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| 24 | ** CHANGE it (define it) if you want Lua to avoid the use of any |
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| 25 | ** non-ansi feature or library. |
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| 26 | */ |
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| 27 | #if defined(__STRICT_ANSI__) |
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| 28 | #define LUA_ANSI |
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| 29 | #endif |
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| 30 | |
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| 31 | |
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| 32 | #if !defined(LUA_ANSI) && defined(_WIN32) |
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| 33 | #define LUA_WIN |
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| 34 | #endif |
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| 35 | |
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| 36 | #if defined(LUA_USE_LINUX) |
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| 37 | #define LUA_USE_POSIX |
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| 38 | #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ |
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| 39 | #define LUA_USE_READLINE /* needs some extra libraries */ |
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| 40 | #endif |
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| 41 | |
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| 42 | #if defined(LUA_USE_MACOSX) |
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| 43 | #define LUA_USE_POSIX |
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| 44 | #define LUA_DL_DYLD /* does not need extra library */ |
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| 45 | #endif |
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| 46 | |
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| 47 | |
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| 48 | |
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| 49 | /* |
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| 50 | @@ LUA_USE_POSIX includes all functionallity listed as X/Open System |
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| 51 | @* Interfaces Extension (XSI). |
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| 52 | ** CHANGE it (define it) if your system is XSI compatible. |
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| 53 | */ |
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| 54 | #if defined(LUA_USE_POSIX) |
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| 55 | #define LUA_USE_MKSTEMP |
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| 56 | #define LUA_USE_ISATTY |
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| 57 | #define LUA_USE_POPEN |
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| 58 | #define LUA_USE_ULONGJMP |
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| 59 | #endif |
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| 60 | |
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| 61 | |
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| 62 | /* |
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| 63 | @@ LUA_PATH and LUA_CPATH are the names of the environment variables that |
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| 64 | @* Lua check to set its paths. |
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| 65 | @@ LUA_INIT is the name of the environment variable that Lua |
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| 66 | @* checks for initialization code. |
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| 67 | ** CHANGE them if you want different names. |
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| 68 | */ |
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| 69 | #define LUA_PATH "LUA_PATH" |
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| 70 | #define LUA_CPATH "LUA_CPATH" |
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| 71 | #define LUA_INIT "LUA_INIT" |
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| 72 | |
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| 73 | |
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| 74 | /* |
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| 75 | @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for |
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| 76 | @* Lua libraries. |
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| 77 | @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for |
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| 78 | @* C libraries. |
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| 79 | ** CHANGE them if your machine has a non-conventional directory |
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| 80 | ** hierarchy or if you want to install your libraries in |
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| 81 | ** non-conventional directories. |
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| 82 | */ |
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| 83 | #if defined(_WIN32) |
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| 84 | /* |
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| 85 | ** In Windows, any exclamation mark ('!') in the path is replaced by the |
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| 86 | ** path of the directory of the executable file of the current process. |
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| 87 | */ |
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| 88 | #define LUA_LDIR "!\\lua\\" |
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| 89 | #define LUA_CDIR "!\\" |
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| 90 | #define LUA_PATH_DEFAULT \ |
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| 91 | ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ |
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| 92 | LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua" |
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| 93 | #define LUA_CPATH_DEFAULT \ |
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| 94 | ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll" |
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| 95 | |
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| 96 | #else |
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| 97 | #define LUA_ROOT "/usr/local/" |
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| 98 | #define LUA_LDIR LUA_ROOT "share/lua/5.1/" |
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| 99 | #define LUA_CDIR LUA_ROOT "lib/lua/5.1/" |
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| 100 | #define LUA_PATH_DEFAULT \ |
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| 101 | "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ |
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| 102 | LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua" |
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| 103 | #define LUA_CPATH_DEFAULT \ |
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| 104 | "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.so" |
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| 105 | #endif |
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| 106 | |
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| 107 | |
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| 108 | /* |
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| 109 | @@ LUA_DIRSEP is the directory separator (for submodules). |
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| 110 | ** CHANGE it if your machine does not use "/" as the directory separator |
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| 111 | ** and is not Windows. (On Windows Lua automatically uses "\".) |
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| 112 | */ |
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| 113 | #if defined(_WIN32) |
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| 114 | #define LUA_DIRSEP "\\" |
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| 115 | #else |
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| 116 | #define LUA_DIRSEP "/" |
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| 117 | #endif |
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| 118 | |
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| 119 | |
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| 120 | /* |
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| 121 | @@ LUA_PATHSEP is the character that separates templates in a path. |
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| 122 | @@ LUA_PATH_MARK is the string that marks the substitution points in a |
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| 123 | @* template. |
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| 124 | @@ LUA_EXECDIR in a Windows path is replaced by the executable's |
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| 125 | @* directory. |
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| 126 | @@ LUA_IGMARK is a mark to ignore all before it when bulding the |
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| 127 | @* luaopen_ function name. |
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| 128 | ** CHANGE them if for some reason your system cannot use those |
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| 129 | ** characters. (E.g., if one of those characters is a common character |
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| 130 | ** in file/directory names.) Probably you do not need to change them. |
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| 131 | */ |
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| 132 | #define LUA_PATHSEP ";" |
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| 133 | #define LUA_PATH_MARK "?" |
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| 134 | #define LUA_EXECDIR "!" |
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| 135 | #define LUA_IGMARK "-" |
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| 136 | |
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| 137 | |
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| 138 | /* |
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| 139 | @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. |
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| 140 | ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most |
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| 141 | ** machines, ptrdiff_t gives a good choice between int or long.) |
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| 142 | */ |
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| 143 | #define LUA_INTEGER ptrdiff_t |
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| 144 | |
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| 145 | |
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| 146 | /* |
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| 147 | @@ LUA_API is a mark for all core API functions. |
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| 148 | @@ LUALIB_API is a mark for all standard library functions. |
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| 149 | ** CHANGE them if you need to define those functions in some special way. |
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| 150 | ** For instance, if you want to create one Windows DLL with the core and |
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| 151 | ** the libraries, you may want to use the following definition (define |
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| 152 | ** LUA_BUILD_AS_DLL to get it). |
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| 153 | */ |
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| 154 | #if defined(LUA_BUILD_AS_DLL) |
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| 155 | |
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| 156 | #if defined(LUA_CORE) || defined(LUA_LIB) |
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| 157 | #define LUA_API __declspec(dllexport) |
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| 158 | #else |
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| 159 | #define LUA_API __declspec(dllimport) |
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| 160 | #endif |
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| 161 | |
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| 162 | #else |
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| 163 | |
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| 164 | #define LUA_API extern |
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| 165 | |
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| 166 | #endif |
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| 167 | |
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| 168 | /* more often than not the libs go together with the core */ |
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| 169 | #define LUALIB_API LUA_API |
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| 170 | |
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| 171 | |
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| 172 | /* |
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| 173 | @@ LUAI_FUNC is a mark for all extern functions that are not to be |
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| 174 | @* exported to outside modules. |
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| 175 | @@ LUAI_DATA is a mark for all extern (const) variables that are not to |
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| 176 | @* be exported to outside modules. |
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| 177 | ** CHANGE them if you need to mark them in some special way. Elf/gcc |
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| 178 | ** (versions 3.2 and later) mark them as "hidden" to optimize access |
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| 179 | ** when Lua is compiled as a shared library. |
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| 180 | */ |
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| 181 | #if defined(luaall_c) |
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| 182 | #define LUAI_FUNC static |
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| 183 | #define LUAI_DATA /* empty */ |
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| 184 | |
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| 185 | #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ |
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| 186 | defined(__ELF__) |
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| 187 | #define LUAI_FUNC __attribute__((visibility("hidden"))) extern |
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| 188 | #define LUAI_DATA LUAI_FUNC |
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| 189 | |
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| 190 | #else |
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| 191 | #define LUAI_FUNC extern |
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| 192 | #define LUAI_DATA extern |
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| 193 | #endif |
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| 194 | |
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| 195 | |
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| 196 | |
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| 197 | /* |
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| 198 | @@ LUA_QL describes how error messages quote program elements. |
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| 199 | ** CHANGE it if you want a different appearance. |
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| 200 | */ |
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| 201 | #define LUA_QL(x) "'" x "'" |
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| 202 | #define LUA_QS LUA_QL("%s") |
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| 203 | |
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| 204 | |
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| 205 | /* |
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| 206 | @@ LUA_IDSIZE gives the maximum size for the description of the source |
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| 207 | @* of a function in debug information. |
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| 208 | ** CHANGE it if you want a different size. |
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| 209 | */ |
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| 210 | #define LUA_IDSIZE 60 |
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| 211 | |
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| 212 | |
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| 213 | /* |
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| 214 | ** {================================================================== |
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| 215 | ** Stand-alone configuration |
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| 216 | ** =================================================================== |
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| 217 | */ |
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| 218 | |
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| 219 | #if defined(lua_c) || defined(luaall_c) |
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| 220 | |
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| 221 | /* |
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| 222 | @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that |
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| 223 | @* is, whether we're running lua interactively). |
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| 224 | ** CHANGE it if you have a better definition for non-POSIX/non-Windows |
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| 225 | ** systems. |
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| 226 | */ |
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| 227 | #if defined(LUA_USE_ISATTY) |
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| 228 | #include <unistd.h> |
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| 229 | #define lua_stdin_is_tty() isatty(0) |
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| 230 | #elif defined(LUA_WIN) |
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| 231 | #include <io.h> |
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| 232 | #include <stdio.h> |
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| 233 | #define lua_stdin_is_tty() _isatty(_fileno(stdin)) |
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| 234 | #else |
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| 235 | #define lua_stdin_is_tty() 1 /* assume stdin is a tty */ |
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| 236 | #endif |
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| 237 | |
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| 238 | |
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| 239 | /* |
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| 240 | @@ LUA_PROMPT is the default prompt used by stand-alone Lua. |
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| 241 | @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua. |
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| 242 | ** CHANGE them if you want different prompts. (You can also change the |
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| 243 | ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.) |
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| 244 | */ |
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| 245 | #define LUA_PROMPT "> " |
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| 246 | #define LUA_PROMPT2 ">> " |
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| 247 | |
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| 248 | |
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| 249 | /* |
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| 250 | @@ LUA_PROGNAME is the default name for the stand-alone Lua program. |
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| 251 | ** CHANGE it if your stand-alone interpreter has a different name and |
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| 252 | ** your system is not able to detect that name automatically. |
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| 253 | */ |
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| 254 | #define LUA_PROGNAME "lua" |
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| 255 | |
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| 256 | |
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| 257 | /* |
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| 258 | @@ LUA_MAXINPUT is the maximum length for an input line in the |
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| 259 | @* stand-alone interpreter. |
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| 260 | ** CHANGE it if you need longer lines. |
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| 261 | */ |
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| 262 | #define LUA_MAXINPUT 512 |
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| 263 | |
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| 264 | |
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| 265 | /* |
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| 266 | @@ lua_readline defines how to show a prompt and then read a line from |
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| 267 | @* the standard input. |
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| 268 | @@ lua_saveline defines how to "save" a read line in a "history". |
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| 269 | @@ lua_freeline defines how to free a line read by lua_readline. |
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| 270 | ** CHANGE them if you want to improve this functionality (e.g., by using |
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| 271 | ** GNU readline and history facilities). |
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| 272 | */ |
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| 273 | #if defined(LUA_USE_READLINE) |
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| 274 | #include <stdio.h> |
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| 275 | #include <readline/readline.h> |
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| 276 | #include <readline/history.h> |
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| 277 | #define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) |
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| 278 | #define lua_saveline(L,idx) \ |
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| 279 | if (lua_strlen(L,idx) > 0) /* non-empty line? */ \ |
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| 280 | add_history(lua_tostring(L, idx)); /* add it to history */ |
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| 281 | #define lua_freeline(L,b) ((void)L, free(b)) |
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| 282 | #else |
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| 283 | #define lua_readline(L,b,p) \ |
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| 284 | ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ |
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| 285 | fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ |
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| 286 | #define lua_saveline(L,idx) { (void)L; (void)idx; } |
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| 287 | #define lua_freeline(L,b) { (void)L; (void)b; } |
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| 288 | #endif |
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| 289 | |
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| 290 | #endif |
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| 291 | |
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| 292 | /* }================================================================== */ |
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| 293 | |
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| 294 | |
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| 295 | /* |
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| 296 | @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles |
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| 297 | @* as a percentage. |
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| 298 | ** CHANGE it if you want the GC to run faster or slower (higher values |
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| 299 | ** mean larger pauses which mean slower collection.) You can also change |
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| 300 | ** this value dynamically. |
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| 301 | */ |
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| 302 | #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */ |
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| 303 | |
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| 304 | |
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| 305 | /* |
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| 306 | @@ LUAI_GCMUL defines the default speed of garbage collection relative to |
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| 307 | @* memory allocation as a percentage. |
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| 308 | ** CHANGE it if you want to change the granularity of the garbage |
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| 309 | ** collection. (Higher values mean coarser collections. 0 represents |
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| 310 | ** infinity, where each step performs a full collection.) You can also |
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| 311 | ** change this value dynamically. |
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| 312 | */ |
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| 313 | #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ |
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| 314 | |
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| 315 | |
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| 316 | |
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| 317 | /* |
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| 318 | @@ LUA_COMPAT_GETN controls compatibility with old getn behavior. |
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| 319 | ** CHANGE it (define it) if you want exact compatibility with the |
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| 320 | ** behavior of setn/getn in Lua 5.0. |
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| 321 | */ |
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| 322 | #undef LUA_COMPAT_GETN |
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| 323 | |
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| 324 | /* |
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| 325 | @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib. |
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| 326 | ** CHANGE it to undefined as soon as you do not need a global 'loadlib' |
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| 327 | ** function (the function is still available as 'package.loadlib'). |
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| 328 | */ |
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| 329 | #undef LUA_COMPAT_LOADLIB |
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| 330 | |
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| 331 | /* |
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| 332 | @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature. |
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| 333 | ** CHANGE it to undefined as soon as your programs use only '...' to |
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| 334 | ** access vararg parameters (instead of the old 'arg' table). |
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| 335 | */ |
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| 336 | #define LUA_COMPAT_VARARG |
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| 337 | |
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| 338 | /* |
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| 339 | @@ LUA_COMPAT_MOD controls compatibility with old math.mod function. |
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| 340 | ** CHANGE it to undefined as soon as your programs use 'math.fmod' or |
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| 341 | ** the new '%' operator instead of 'math.mod'. |
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| 342 | */ |
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| 343 | #define LUA_COMPAT_MOD |
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| 344 | |
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| 345 | /* |
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| 346 | @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting |
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| 347 | @* facility. |
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| 348 | ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn |
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| 349 | ** off the advisory error when nesting [[...]]. |
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| 350 | */ |
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| 351 | #define LUA_COMPAT_LSTR 1 |
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| 352 | |
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| 353 | /* |
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| 354 | @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name. |
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| 355 | ** CHANGE it to undefined as soon as you rename 'string.gfind' to |
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| 356 | ** 'string.gmatch'. |
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| 357 | */ |
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| 358 | #define LUA_COMPAT_GFIND |
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| 359 | |
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| 360 | /* |
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| 361 | @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib' |
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| 362 | @* behavior. |
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| 363 | ** CHANGE it to undefined as soon as you replace to 'luaL_register' |
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| 364 | ** your uses of 'luaL_openlib' |
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| 365 | */ |
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| 366 | #define LUA_COMPAT_OPENLIB |
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| 367 | |
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| 368 | |
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| 369 | |
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| 370 | /* |
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| 371 | @@ luai_apicheck is the assert macro used by the Lua-C API. |
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| 372 | ** CHANGE luai_apicheck if you want Lua to perform some checks in the |
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| 373 | ** parameters it gets from API calls. This may slow down the interpreter |
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| 374 | ** a bit, but may be quite useful when debugging C code that interfaces |
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| 375 | ** with Lua. A useful redefinition is to use assert.h. |
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| 376 | */ |
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| 377 | #if defined(LUA_USE_APICHECK) |
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| 378 | #include <assert.h> |
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| 379 | #define luai_apicheck(L,o) { (void)L; assert(o); } |
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| 380 | #else |
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| 381 | #define luai_apicheck(L,o) { (void)L; } |
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| 382 | #endif |
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| 383 | |
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| 384 | |
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| 385 | /* |
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| 386 | @@ LUAI_BITSINT defines the number of bits in an int. |
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| 387 | ** CHANGE here if Lua cannot automatically detect the number of bits of |
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| 388 | ** your machine. Probably you do not need to change this. |
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| 389 | */ |
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| 390 | /* avoid overflows in comparison */ |
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| 391 | #if INT_MAX-20 < 32760 |
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| 392 | #define LUAI_BITSINT 16 |
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| 393 | #elif INT_MAX > 2147483640L |
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| 394 | /* int has at least 32 bits */ |
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| 395 | #define LUAI_BITSINT 32 |
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| 396 | #else |
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| 397 | #error "you must define LUA_BITSINT with number of bits in an integer" |
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| 398 | #endif |
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| 399 | |
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| 400 | |
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| 401 | /* |
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| 402 | @@ LUAI_UINT32 is an unsigned integer with at least 32 bits. |
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| 403 | @@ LUAI_INT32 is an signed integer with at least 32 bits. |
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| 404 | @@ LUAI_UMEM is an unsigned integer big enough to count the total |
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| 405 | @* memory used by Lua. |
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| 406 | @@ LUAI_MEM is a signed integer big enough to count the total memory |
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| 407 | @* used by Lua. |
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| 408 | ** CHANGE here if for some weird reason the default definitions are not |
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| 409 | ** good enough for your machine. (The definitions in the 'else' |
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| 410 | ** part always works, but may waste space on machines with 64-bit |
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| 411 | ** longs.) Probably you do not need to change this. |
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| 412 | */ |
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| 413 | #if LUAI_BITSINT >= 32 |
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| 414 | #define LUAI_UINT32 unsigned int |
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| 415 | #define LUAI_INT32 int |
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| 416 | #define LUAI_MAXINT32 INT_MAX |
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| 417 | #define LUAI_UMEM size_t |
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| 418 | #define LUAI_MEM ptrdiff_t |
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| 419 | #else |
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| 420 | /* 16-bit ints */ |
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| 421 | #define LUAI_UINT32 unsigned long |
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| 422 | #define LUAI_INT32 long |
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| 423 | #define LUAI_MAXINT32 LONG_MAX |
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| 424 | #define LUAI_UMEM unsigned long |
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| 425 | #define LUAI_MEM long |
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| 426 | #endif |
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| 427 | |
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| 428 | |
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| 429 | /* |
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| 430 | @@ LUAI_MAXCALLS limits the number of nested calls. |
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| 431 | ** CHANGE it if you need really deep recursive calls. This limit is |
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| 432 | ** arbitrary; its only purpose is to stop infinite recursion before |
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| 433 | ** exhausting memory. |
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| 434 | */ |
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| 435 | #define LUAI_MAXCALLS 20000 |
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| 436 | |
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| 437 | |
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| 438 | /* |
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| 439 | @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function |
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| 440 | @* can use. |
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| 441 | ** CHANGE it if you need lots of (Lua) stack space for your C |
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| 442 | ** functions. This limit is arbitrary; its only purpose is to stop C |
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| 443 | ** functions to consume unlimited stack space. |
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| 444 | */ |
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| 445 | #define LUAI_MCS_AUX ((int)(INT_MAX / (4*sizeof(LUA_NUMBER)))) |
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| 446 | #define LUAI_MAXCSTACK (LUAI_MCS_AUX > SHRT_MAX ? SHRT_MAX : LUAI_MCS_AUX) |
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| 447 | |
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| 448 | |
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| 449 | |
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| 450 | /* |
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| 451 | ** {================================================================== |
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| 452 | ** CHANGE (to smaller values) the following definitions if your system |
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| 453 | ** has a small C stack. (Or you may want to change them to larger |
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| 454 | ** values if your system has a large C stack and these limits are |
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| 455 | ** too rigid for you.) Some of these constants control the size of |
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| 456 | ** stack-allocated arrays used by the compiler or the interpreter, while |
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| 457 | ** others limit the maximum number of recursive calls that the compiler |
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| 458 | ** or the interpreter can perform. Values too large may cause a C stack |
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| 459 | ** overflow for some forms of deep constructs. |
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| 460 | ** =================================================================== |
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| 461 | */ |
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| 462 | |
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| 463 | |
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| 464 | /* |
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| 465 | @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and |
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| 466 | @* syntactical nested non-terminals in a program. |
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| 467 | */ |
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| 468 | #define LUAI_MAXCCALLS 200 |
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| 469 | |
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| 470 | |
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| 471 | /* |
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| 472 | @@ LUAI_MAXVARS is the maximum number of local variables per function |
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| 473 | @* (must be smaller than 250). |
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| 474 | */ |
---|
| 475 | #define LUAI_MAXVARS 200 |
---|
| 476 | |
---|
| 477 | |
---|
| 478 | /* |
---|
| 479 | @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function |
---|
| 480 | @* (must be smaller than 250). |
---|
| 481 | */ |
---|
| 482 | #define LUAI_MAXUPVALUES 60 |
---|
| 483 | |
---|
| 484 | |
---|
| 485 | /* |
---|
| 486 | @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. |
---|
| 487 | */ |
---|
| 488 | #define LUAL_BUFFERSIZE BUFSIZ |
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| 489 | |
---|
| 490 | /* }================================================================== */ |
---|
| 491 | |
---|
| 492 | |
---|
| 493 | |
---|
| 494 | |
---|
| 495 | /* |
---|
| 496 | ** {================================================================== |
---|
| 497 | @@ LUA_NUMBER is the type of numbers in Lua. |
---|
| 498 | ** CHANGE the following definitions only if you want to build Lua |
---|
| 499 | ** with a number type different from double. You may also need to |
---|
| 500 | ** change lua_number2int & lua_number2integer. |
---|
| 501 | ** =================================================================== |
---|
| 502 | */ |
---|
| 503 | |
---|
| 504 | #define LUA_NUMBER_DOUBLE |
---|
| 505 | #define LUA_NUMBER double |
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| 506 | |
---|
| 507 | /* |
---|
| 508 | @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' |
---|
| 509 | @* over a number. |
---|
| 510 | */ |
---|
| 511 | #define LUAI_UACNUMBER double |
---|
| 512 | |
---|
| 513 | |
---|
| 514 | /* |
---|
| 515 | @@ LUA_NUMBER_SCAN is the format for reading numbers. |
---|
| 516 | @@ LUA_NUMBER_FMT is the format for writing numbers. |
---|
| 517 | @@ lua_number2str converts a number to a string. |
---|
| 518 | @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. |
---|
| 519 | @@ lua_str2number converts a string to a number. |
---|
| 520 | */ |
---|
| 521 | #define LUA_NUMBER_SCAN "%lf" |
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| 522 | #define LUA_NUMBER_FMT "%.14g" |
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| 523 | #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) |
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| 524 | #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ |
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| 525 | #define lua_str2number(s,p) strtod((s), (p)) |
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| 526 | |
---|
| 527 | |
---|
| 528 | /* |
---|
| 529 | @@ The luai_num* macros define the primitive operations over numbers. |
---|
| 530 | */ |
---|
| 531 | #if defined(LUA_CORE) |
---|
| 532 | #include <math.h> |
---|
| 533 | #define luai_numadd(a,b) ((a)+(b)) |
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| 534 | #define luai_numsub(a,b) ((a)-(b)) |
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| 535 | #define luai_nummul(a,b) ((a)*(b)) |
---|
| 536 | #define luai_numdiv(a,b) ((a)/(b)) |
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| 537 | #define luai_nummod(a,b) ((a) - floor((a)/(b))*(b)) |
---|
| 538 | #define luai_numpow(a,b) (pow(a,b)) |
---|
| 539 | #define luai_numunm(a) (-(a)) |
---|
| 540 | #define luai_numeq(a,b) ((a)==(b)) |
---|
| 541 | #define luai_numlt(a,b) ((a)<(b)) |
---|
| 542 | #define luai_numle(a,b) ((a)<=(b)) |
---|
| 543 | #define luai_numisnan(a) (!luai_numeq((a), (a))) |
---|
| 544 | #endif |
---|
| 545 | |
---|
| 546 | |
---|
| 547 | /* |
---|
| 548 | @@ lua_number2int is a macro to convert lua_Number to int. |
---|
| 549 | @@ lua_number2integer is a macro to convert lua_Number to lua_Integer. |
---|
| 550 | ** CHANGE them if you know a faster way to convert a lua_Number to |
---|
| 551 | ** int (with any rounding method and without throwing errors) in your |
---|
| 552 | ** system. In Pentium machines, a naive typecast from double to int |
---|
| 553 | ** in C is extremely slow, so any alternative is worth trying. |
---|
| 554 | */ |
---|
| 555 | |
---|
| 556 | /* On a Pentium, resort to a trick */ |
---|
| 557 | #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \ |
---|
| 558 | (defined(__i386) || defined (_M_IX86) || defined(__i386__)) |
---|
| 559 | |
---|
| 560 | /* On a Microsoft compiler, use assembler */ |
---|
| 561 | #if defined(_MSC_VER) |
---|
| 562 | |
---|
| 563 | #define lua_number2int(i,d) __asm fld d __asm fistp i |
---|
| 564 | #define lua_number2integer(i,n) lua_number2int(i, n) |
---|
| 565 | |
---|
| 566 | /* the next trick should work on any Pentium, but sometimes clashes |
---|
| 567 | with a DirectX idiosyncrasy */ |
---|
| 568 | #else |
---|
| 569 | |
---|
| 570 | union luai_Cast { double l_d; long l_l; }; |
---|
| 571 | #define lua_number2int(i,d) \ |
---|
| 572 | { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; } |
---|
| 573 | #define lua_number2integer(i,n) lua_number2int(i, n) |
---|
| 574 | |
---|
| 575 | #endif |
---|
| 576 | |
---|
| 577 | |
---|
| 578 | /* this option always works, but may be slow */ |
---|
| 579 | #else |
---|
| 580 | #define lua_number2int(i,d) ((i)=(int)(d)) |
---|
| 581 | #define lua_number2integer(i,d) ((i)=(lua_Integer)(d)) |
---|
| 582 | |
---|
| 583 | #endif |
---|
| 584 | |
---|
| 585 | /* }================================================================== */ |
---|
| 586 | |
---|
| 587 | |
---|
| 588 | /* |
---|
| 589 | @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment. |
---|
| 590 | ** CHANGE it if your system requires alignments larger than double. (For |
---|
| 591 | ** instance, if your system supports long doubles and they must be |
---|
| 592 | ** aligned in 16-byte boundaries, then you should add long double in the |
---|
| 593 | ** union.) Probably you do not need to change this. |
---|
| 594 | */ |
---|
| 595 | #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } |
---|
| 596 | |
---|
| 597 | |
---|
| 598 | /* |
---|
| 599 | @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling. |
---|
| 600 | ** CHANGE them if you prefer to use longjmp/setjmp even with C++ |
---|
| 601 | ** or if want/don't to use _longjmp/_setjmp instead of regular |
---|
| 602 | ** longjmp/setjmp. By default, Lua handles errors with exceptions when |
---|
| 603 | ** compiling as C++ code, with _longjmp/_setjmp when asked to use them, |
---|
| 604 | ** and with longjmp/setjmp otherwise. |
---|
| 605 | */ |
---|
| 606 | #if defined(__cplusplus) |
---|
| 607 | /* C++ exceptions */ |
---|
| 608 | #define LUAI_THROW(L,c) throw(c) |
---|
| 609 | #define LUAI_TRY(L,c,a) try { a } catch(...) \ |
---|
| 610 | { if ((c)->status == 0) (c)->status = -1; } |
---|
| 611 | #define luai_jmpbuf int /* dummy variable */ |
---|
| 612 | |
---|
| 613 | #elif defined(LUA_USE_ULONGJMP) |
---|
| 614 | /* in Unix, try _longjmp/_setjmp (more efficient) */ |
---|
| 615 | #define LUAI_THROW(L,c) _longjmp((c)->b, 1) |
---|
| 616 | #define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } |
---|
| 617 | #define luai_jmpbuf jmp_buf |
---|
| 618 | |
---|
| 619 | #else |
---|
| 620 | /* default handling with long jumps */ |
---|
| 621 | #define LUAI_THROW(L,c) longjmp((c)->b, 1) |
---|
| 622 | #define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } |
---|
| 623 | #define luai_jmpbuf jmp_buf |
---|
| 624 | |
---|
| 625 | #endif |
---|
| 626 | |
---|
| 627 | |
---|
| 628 | /* |
---|
| 629 | @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern |
---|
| 630 | @* can do during pattern-matching. |
---|
| 631 | ** CHANGE it if you need more captures. This limit is arbitrary. |
---|
| 632 | */ |
---|
| 633 | #define LUA_MAXCAPTURES 32 |
---|
| 634 | |
---|
| 635 | |
---|
| 636 | /* |
---|
| 637 | @@ lua_tmpnam is the function that the OS library uses to create a |
---|
| 638 | @* temporary name. |
---|
| 639 | @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam. |
---|
| 640 | ** CHANGE them if you have an alternative to tmpnam (which is considered |
---|
| 641 | ** insecure) or if you want the original tmpnam anyway. By default, Lua |
---|
| 642 | ** uses tmpnam except when POSIX is available, where it uses mkstemp. |
---|
| 643 | */ |
---|
| 644 | #if defined(loslib_c) || defined(luaall_c) |
---|
| 645 | |
---|
| 646 | #if defined(LUA_USE_MKSTEMP) |
---|
| 647 | #include <unistd.h> |
---|
| 648 | #define LUA_TMPNAMBUFSIZE 32 |
---|
| 649 | #define lua_tmpnam(b,e) { \ |
---|
| 650 | strcpy(b, "/tmp/lua_XXXXXX"); \ |
---|
| 651 | e = mkstemp(b); \ |
---|
| 652 | if (e != -1) close(e); \ |
---|
| 653 | e = (e == -1); } |
---|
| 654 | |
---|
| 655 | #else |
---|
| 656 | #define LUA_TMPNAMBUFSIZE L_tmpnam |
---|
| 657 | #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } |
---|
| 658 | #endif |
---|
| 659 | |
---|
| 660 | #endif |
---|
| 661 | |
---|
| 662 | |
---|
| 663 | /* |
---|
| 664 | @@ lua_popen spawns a new process connected to the current one through |
---|
| 665 | @* the file streams. |
---|
| 666 | ** CHANGE it if you have a way to implement it in your system. |
---|
| 667 | */ |
---|
| 668 | #if defined(LUA_USE_POPEN) |
---|
| 669 | |
---|
| 670 | #define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m)) |
---|
| 671 | #define lua_pclose(L,file) ((void)L, (pclose(file) != -1)) |
---|
| 672 | |
---|
| 673 | #elif defined(LUA_WIN) |
---|
| 674 | |
---|
| 675 | #define lua_popen(L,c,m) ((void)L, _popen(c,m)) |
---|
| 676 | #define lua_pclose(L,file) ((void)L, (_pclose(file) != -1)) |
---|
| 677 | |
---|
| 678 | #else |
---|
| 679 | |
---|
| 680 | #define lua_popen(L,c,m) ((void)((void)c, m), \ |
---|
| 681 | luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0) |
---|
| 682 | #define lua_pclose(L,file) ((void)((void)L, file), 0) |
---|
| 683 | |
---|
| 684 | #endif |
---|
| 685 | |
---|
| 686 | /* |
---|
| 687 | @@ LUA_DL_* define which dynamic-library system Lua should use. |
---|
| 688 | ** CHANGE here if Lua has problems choosing the appropriate |
---|
| 689 | ** dynamic-library system for your platform (either Windows' DLL, Mac's |
---|
| 690 | ** dyld, or Unix's dlopen). If your system is some kind of Unix, there |
---|
| 691 | ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for |
---|
| 692 | ** it. To use dlopen you also need to adapt the src/Makefile (probably |
---|
| 693 | ** adding -ldl to the linker options), so Lua does not select it |
---|
| 694 | ** automatically. (When you change the makefile to add -ldl, you must |
---|
| 695 | ** also add -DLUA_USE_DLOPEN.) |
---|
| 696 | ** If you do not want any kind of dynamic library, undefine all these |
---|
| 697 | ** options. |
---|
| 698 | ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD. |
---|
| 699 | */ |
---|
| 700 | #if defined(LUA_USE_DLOPEN) |
---|
| 701 | #define LUA_DL_DLOPEN |
---|
| 702 | #endif |
---|
| 703 | |
---|
| 704 | #if defined(LUA_WIN) |
---|
| 705 | #define LUA_DL_DLL |
---|
| 706 | #endif |
---|
| 707 | |
---|
| 708 | |
---|
| 709 | /* |
---|
| 710 | @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State |
---|
| 711 | @* (the data goes just *before* the lua_State pointer). |
---|
| 712 | ** CHANGE (define) this if you really need that. This value must be |
---|
| 713 | ** a multiple of the maximum alignment required for your machine. |
---|
| 714 | */ |
---|
| 715 | #define LUAI_EXTRASPACE 0 |
---|
| 716 | |
---|
| 717 | |
---|
| 718 | /* |
---|
| 719 | @@ luai_userstate* allow user-specific actions on threads. |
---|
| 720 | ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something |
---|
| 721 | ** extra when a thread is created/deleted/resumed/yielded. |
---|
| 722 | */ |
---|
| 723 | #define luai_userstateopen(L) ((void)L) |
---|
| 724 | #define luai_userstateclose(L) ((void)L) |
---|
| 725 | #define luai_userstatethread(L,L1) ((void)L) |
---|
| 726 | #define luai_userstatefree(L) ((void)L) |
---|
| 727 | #define luai_userstateresume(L,n) ((void)L) |
---|
| 728 | #define luai_userstateyield(L,n) ((void)L) |
---|
| 729 | |
---|
| 730 | |
---|
| 731 | /* |
---|
| 732 | @@ LUA_INTFRMLEN is the length modifier for integer conversions |
---|
| 733 | @* in 'string.format'. |
---|
| 734 | @@ LUA_INTFRM_T is the integer type correspoding to the previous length |
---|
| 735 | @* modifier. |
---|
| 736 | ** CHANGE them if your system supports long long or does not support long. |
---|
| 737 | */ |
---|
| 738 | |
---|
| 739 | #if defined(LUA_USELONGLONG) |
---|
| 740 | |
---|
| 741 | #define LUA_INTFRMLEN "ll" |
---|
| 742 | #define LUA_INTFRM_T long long |
---|
| 743 | |
---|
| 744 | #else |
---|
| 745 | |
---|
| 746 | #define LUA_INTFRMLEN "l" |
---|
| 747 | #define LUA_INTFRM_T long |
---|
| 748 | |
---|
| 749 | #endif |
---|
| 750 | |
---|
| 751 | |
---|
| 752 | |
---|
| 753 | /* =================================================================== */ |
---|
| 754 | |
---|
| 755 | /* |
---|
| 756 | ** Local configuration. You can use this space to add your redefinitions |
---|
| 757 | ** without modifying the main part of the file. |
---|
| 758 | */ |
---|
| 759 | |
---|
| 760 | |
---|
| 761 | |
---|
| 762 | #endif |
---|
| 763 | |
---|