diff options
Diffstat (limited to 'lua/luaconf.h')
| -rw-r--r-- | lua/luaconf.h | 664 |
1 files changed, 216 insertions, 448 deletions
diff --git a/lua/luaconf.h b/lua/luaconf.h index 8354633..f49e8cb 100644 --- a/lua/luaconf.h +++ b/lua/luaconf.h @@ -1,5 +1,5 @@ /* -** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $ +** $Id: luaconf.h,v 1.170 2011/12/06 16:58:36 roberto Exp $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ @@ -24,30 +24,44 @@ ** CHANGE it (define it) if you want Lua to avoid the use of any ** non-ansi feature or library. */ -#if defined(__STRICT_ANSI__) +#if !defined(LUA_ANSI) && defined(__STRICT_ANSI__) #define LUA_ANSI #endif -#if !defined(LUA_ANSI) && defined(_WIN32) -#define LUA_WIN +#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE) +#define LUA_WIN /* enable goodies for regular Windows platforms */ #endif +#if defined(LUA_WIN) +#define LUA_DL_DLL +#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ +#endif + + + #if defined(LUA_USE_LINUX) #define LUA_USE_POSIX #define LUA_USE_DLOPEN /* needs an extra library: -ldl */ #define LUA_USE_READLINE /* needs some extra libraries */ +#define LUA_USE_STRTODHEX /* assume 'strtod' handles hexa formats */ +#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ +#define LUA_USE_LONGLONG /* assume support for long long */ #endif #if defined(LUA_USE_MACOSX) #define LUA_USE_POSIX -#define LUA_DL_DYLD /* does not need extra library */ +#define LUA_USE_DLOPEN /* does not need -ldl */ +#define LUA_USE_READLINE /* needs an extra library: -lreadline */ +#define LUA_USE_STRTODHEX /* assume 'strtod' handles hexa formats */ +#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */ +#define LUA_USE_LONGLONG /* assume support for long long */ #endif /* -@@ LUA_USE_POSIX includes all functionallity listed as X/Open System +@@ LUA_USE_POSIX includes all functionality listed as X/Open System @* Interfaces Extension (XSI). ** CHANGE it (define it) if your system is XSI compatible. */ @@ -56,20 +70,10 @@ #define LUA_USE_ISATTY #define LUA_USE_POPEN #define LUA_USE_ULONGJMP +#define LUA_USE_GMTIME_R #endif -/* -@@ LUA_PATH and LUA_CPATH are the names of the environment variables that -@* Lua check to set its paths. -@@ LUA_INIT is the name of the environment variable that Lua -@* checks for initialization code. -** CHANGE them if you want different names. -*/ -#define LUA_PATH "LUA_PATH" -#define LUA_CPATH "LUA_CPATH" -#define LUA_INIT "LUA_INIT" - /* @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for @@ -80,7 +84,7 @@ ** hierarchy or if you want to install your libraries in ** non-conventional directories. */ -#if defined(_WIN32) +#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. @@ -88,21 +92,25 @@ #define LUA_LDIR "!\\lua\\" #define LUA_CDIR "!\\" #define LUA_PATH_DEFAULT \ - ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua" + LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ + LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" ".\\?.lua" #define LUA_CPATH_DEFAULT \ - ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll" + LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll" -#else -/* #define LUA_ROOT "/usr/local/" */ -#define LUA_LDIR LUA_ROOT "share/lua/5.1/" -#define LUA_CDIR LUA_ROOT "lib/lua/5.1/" +#else /* }{ */ + +#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/" +#ifndef LUA_ROOT +#define LUA_ROOT "/usr/local/" +#endif +#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR +#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR #define LUA_PATH_DEFAULT \ - "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ - LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua" + LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ + LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" "./?.lua" #define LUA_CPATH_DEFAULT \ - "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.so" -#endif + LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" +#endif /* } */ /* @@ -118,79 +126,67 @@ /* -@@ LUA_PATHSEP is the character that separates templates in a path. -@@ LUA_PATH_MARK is the string that marks the substitution points in a -@* template. -@@ LUA_EXECDIR in a Windows path is replaced by the executable's -@* directory. -@@ LUA_IGMARK is a mark to ignore all before it when bulding the -@* luaopen_ function name. -** CHANGE them if for some reason your system cannot use those -** characters. (E.g., if one of those characters is a common character -** in file/directory names.) Probably you do not need to change them. -*/ -#define LUA_PATHSEP ";" -#define LUA_PATH_MARK "?" -#define LUA_EXECDIR "!" -#define LUA_IGMARK "-" - - -/* -@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. -** CHANGE that if ptrdiff_t is not adequate on your machine. (On most -** machines, ptrdiff_t gives a good choice between int or long.) +@@ LUA_ENV is the name of the variable that holds the current +@@ environment, used to access global names. +** CHANGE it if you do not like this name. */ -#define LUA_INTEGER ptrdiff_t +#define LUA_ENV "_ENV" /* @@ LUA_API is a mark for all core API functions. -@@ LUALIB_API is a mark for all standard library 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_BUILD_AS_DLL) /* { */ -#if defined(LUA_CORE) || defined(LUA_LIB) +#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ #define LUA_API __declspec(dllexport) -#else +#else /* }{ */ #define LUA_API __declspec(dllimport) -#endif +#endif /* } */ -#else +#else /* }{ */ #define LUA_API extern -#endif +#endif /* } */ + /* more often than not the libs go together with the core */ #define LUALIB_API LUA_API +#define LUAMOD_API LUALIB_API /* @@ LUAI_FUNC is a mark for all extern functions that are not to be @* exported to outside modules. -@@ LUAI_DATA is a mark for all extern (const) variables that are not to -@* be exported to outside modules. +@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables +@* that are not 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. -*/ -#if defined(luaall_c) -#define LUAI_FUNC static -#define LUAI_DATA /* empty */ - -#elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ - defined(__ELF__) +** 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("hidden"))) extern -#define LUAI_DATA LUAI_FUNC +#define LUAI_DDEC LUAI_FUNC +#define LUAI_DDEF /* empty */ -#else +#else /* }{ */ #define LUAI_FUNC extern -#define LUAI_DATA extern -#endif +#define LUAI_DDEC extern +#define LUAI_DDEF /* empty */ +#endif /* } */ @@ -211,175 +207,101 @@ /* -** {================================================================== -** Stand-alone configuration -** =================================================================== -*/ - -#if defined(lua_c) || defined(luaall_c) - -/* -@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that -@* is, whether we're running lua interactively). -** CHANGE it if you have a better definition for non-POSIX/non-Windows -** systems. +@@ luai_writestring/luai_writeline define how 'print' prints its results. +** They are only used in libraries and the stand-alone program. (The #if +** avoids including 'stdio.h' everywhere.) */ -#if defined(LUA_USE_ISATTY) -#include <unistd.h> -#define lua_stdin_is_tty() isatty(0) -#elif defined(LUA_WIN) -#include <io.h> +#if defined(LUA_LIB) || defined(lua_c) #include <stdio.h> -#define lua_stdin_is_tty() _isatty(_fileno(stdin)) -#else -#define lua_stdin_is_tty() 1 /* assume stdin is a tty */ +#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout) +#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout)) #endif - /* -@@ LUA_PROMPT is the default prompt used by stand-alone Lua. -@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua. -** CHANGE them if you want different prompts. (You can also change the -** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.) +@@ luai_writestringerror defines how to print error messages. +** (A format string with one argument is enough for Lua...) */ -#define LUA_PROMPT "> " -#define LUA_PROMPT2 ">> " +#define luai_writestringerror(s,p) \ + (fprintf(stderr, (s), (p)), fflush(stderr)) -/* -@@ LUA_PROGNAME is the default name for the stand-alone Lua program. -** CHANGE it if your stand-alone interpreter has a different name and -** your system is not able to detect that name automatically. -*/ -#define LUA_PROGNAME "lua" -/* -@@ LUA_MAXINPUT is the maximum length for an input line in the -@* stand-alone interpreter. -** CHANGE it if you need longer lines. -*/ -#define LUA_MAXINPUT 512 - /* -@@ lua_readline defines how to show a prompt and then read a line from -@* the standard input. -@@ lua_saveline defines how to "save" a read line in a "history". -@@ lua_freeline defines how to free a line read by lua_readline. -** CHANGE them if you want to improve this functionality (e.g., by using -** GNU readline and history facilities). +** {================================================================== +** Compatibility with previous versions +** =================================================================== */ -#if defined(LUA_USE_READLINE) -#include <stdio.h> -#include <readline/readline.h> -#include <readline/history.h> -#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL) -#define lua_saveline(L,idx) \ - if (lua_strlen(L,idx) > 0) /* non-empty line? */ \ - add_history(lua_tostring(L, idx)); /* add it to history */ -#define lua_freeline(L,b) ((void)L, free(b)) -#else -#define lua_readline(L,b,p) \ - ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \ - fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ -#define lua_saveline(L,idx) { (void)L; (void)idx; } -#define lua_freeline(L,b) { (void)L; (void)b; } -#endif - -#endif - -/* }================================================================== */ - /* -@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles -@* as a percentage. -** CHANGE it if you want the GC to run faster or slower (higher values -** mean larger pauses which mean slower collection.) You can also change -** this value dynamically. +@@ LUA_COMPAT_ALL controls all compatibility options. +** You can define it to get all options, or change specific options +** to fit your specific needs. */ -#define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */ - +#if defined(LUA_COMPAT_ALL) /* { */ /* -@@ LUAI_GCMUL defines the default speed of garbage collection relative to -@* memory allocation as a percentage. -** CHANGE it if you want to change the granularity of the garbage -** collection. (Higher values mean coarser collections. 0 represents -** infinity, where each step performs a full collection.) You can also -** change this value dynamically. +@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. +** You can replace it with 'table.unpack'. */ -#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ - - +#define LUA_COMPAT_UNPACK /* -@@ LUA_COMPAT_GETN controls compatibility with old getn behavior. -** CHANGE it (define it) if you want exact compatibility with the -** behavior of setn/getn in Lua 5.0. +@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. +** You can replace it with 'package.searchers'. */ -#undef LUA_COMPAT_GETN +#define LUA_COMPAT_LOADERS /* -@@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib. -** CHANGE it to undefined as soon as you do not need a global 'loadlib' -** function (the function is still available as 'package.loadlib'). +@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. +** You can call your C function directly (with light C functions). */ -#undef LUA_COMPAT_LOADLIB +#define lua_cpcall(L,f,u) \ + (lua_pushcfunction(L, (f)), \ + lua_pushlightuserdata(L,(u)), \ + lua_pcall(L,1,0,0)) -/* -@@ LUA_COMPAT_VARARG controls compatibility with old vararg feature. -** CHANGE it to undefined as soon as your programs use only '...' to -** access vararg parameters (instead of the old 'arg' table). -*/ -#define LUA_COMPAT_VARARG /* -@@ LUA_COMPAT_MOD controls compatibility with old math.mod function. -** CHANGE it to undefined as soon as your programs use 'math.fmod' or -** the new '%' operator instead of 'math.mod'. +@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. +** You can rewrite 'log10(x)' as 'log(x, 10)'. */ -#define LUA_COMPAT_MOD +#define LUA_COMPAT_LOG10 /* -@@ LUA_COMPAT_LSTR controls compatibility with old long string nesting -@* facility. -** CHANGE it to 2 if you want the old behaviour, or undefine it to turn -** off the advisory error when nesting [[...]]. +@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base +** library. You can rewrite 'loadstring(s)' as 'load(s)'. */ -#define LUA_COMPAT_LSTR 1 +#define LUA_COMPAT_LOADSTRING /* -@@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name. -** CHANGE it to undefined as soon as you rename 'string.gfind' to -** 'string.gmatch'. +@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. */ -#define LUA_COMPAT_GFIND +#define LUA_COMPAT_MAXN /* -@@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib' -@* behavior. -** CHANGE it to undefined as soon as you replace to 'luaL_register' -** your uses of 'luaL_openlib' +@@ 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. */ -#define LUA_COMPAT_OPENLIB +#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) /* -@@ luai_apicheck is the assert macro used by the Lua-C API. -** CHANGE luai_apicheck if you want Lua to perform some checks in the -** parameters it gets from API calls. This may slow down the interpreter -** a bit, but may be quite useful when debugging C code that interfaces -** with Lua. A useful redefinition is to use assert.h. +@@ LUA_COMPAT_MODULE controls compatibility with previous +** module functions 'module' (Lua) and 'luaL_register' (C). */ -#if defined(LUA_USE_APICHECK) -#include <assert.h> -#define luai_apicheck(L,o) { (void)L; assert(o); } -#else -#define luai_apicheck(L,o) { (void)L; } -#endif +#define LUA_COMPAT_MODULE + +#endif /* } */ + +/* }================================================================== */ + /* @@ -388,107 +310,62 @@ ** your machine. Probably you do not need to change this. */ /* avoid overflows in comparison */ -#if INT_MAX-20 < 32760 +#if INT_MAX-20 < 32760 /* { */ #define LUAI_BITSINT 16 -#elif INT_MAX > 2147483640L +#elif INT_MAX > 2147483640L /* }{ */ /* int has at least 32 bits */ #define LUAI_BITSINT 32 -#else +#else /* }{ */ #error "you must define LUA_BITSINT with number of bits in an integer" -#endif +#endif /* } */ /* -@@ LUAI_UINT32 is an unsigned integer with at least 32 bits. -@@ LUAI_INT32 is an signed integer with at least 32 bits. +@@ LUA_INT32 is an signed integer with exactly 32 bits. @@ LUAI_UMEM is an unsigned integer big enough to count the total @* memory used by Lua. @@ LUAI_MEM is a signed integer big enough to count the total memory @* used by Lua. ** CHANGE here if for some weird reason the default definitions are not -** good enough for your machine. (The definitions in the 'else' -** part always works, but may waste space on machines with 64-bit -** longs.) Probably you do not need to change this. +** good enough for your machine. Probably you do not need to change +** this. */ -#if LUAI_BITSINT >= 32 -#define LUAI_UINT32 unsigned int -#define LUAI_INT32 int -#define LUAI_MAXINT32 INT_MAX +#if LUAI_BITSINT >= 32 /* { */ +#define LUA_INT32 int #define LUAI_UMEM size_t #define LUAI_MEM ptrdiff_t -#else +#else /* }{ */ /* 16-bit ints */ -#define LUAI_UINT32 unsigned long -#define LUAI_INT32 long -#define LUAI_MAXINT32 LONG_MAX +#define LUA_INT32 long #define LUAI_UMEM unsigned long #define LUAI_MEM long -#endif - - -/* -@@ LUAI_MAXCALLS limits the number of nested calls. -** CHANGE it if you need really deep recursive calls. This limit is -** arbitrary; its only purpose is to stop infinite recursion before -** exhausting memory. -*/ -#define LUAI_MAXCALLS 20000 - - -/* -@@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function -@* can use. -** CHANGE it if you need lots of (Lua) stack space for your C -** functions. This limit is arbitrary; its only purpose is to stop C -** functions to consume unlimited stack space. (must be smaller than -** -LUA_REGISTRYINDEX) -*/ -#define LUAI_MAXCSTACK 8000 - +#endif /* } */ /* -** {================================================================== -** CHANGE (to smaller values) the following definitions if your system -** has a small C stack. (Or you may want to change them to larger -** values if your system has a large C stack and these limits are -** too rigid for you.) Some of these constants control the size of -** stack-allocated arrays used by the compiler or the interpreter, while -** others limit the maximum number of recursive calls that the compiler -** or the interpreter can perform. Values too large may cause a C stack -** overflow for some forms of deep constructs. -** =================================================================== -*/ - - -/* -@@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and -@* syntactical nested non-terminals in a program. +@@ 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 to consume unlimited stack +** space (and to reserve some numbers for pseudo-indices). */ -#define LUAI_MAXCCALLS 200 - +#if LUAI_BITSINT >= 32 +#define LUAI_MAXSTACK 1000000 +#else +#define LUAI_MAXSTACK 15000 +#endif -/* -@@ LUAI_MAXVARS is the maximum number of local variables per function -@* (must be smaller than 250). -*/ -#define LUAI_MAXVARS 200 +/* reserve some space for error handling */ +#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000) -/* -@@ LUAI_MAXUPVALUES is the maximum number of upvalues per function -@* (must be smaller than 250). -*/ -#define LUAI_MAXUPVALUES 60 /* @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. +** CHANGE it if it uses too much C-stack space. */ #define LUAL_BUFFERSIZE BUFSIZ -/* }================================================================== */ - @@ -516,237 +393,128 @@ @@ LUA_NUMBER_FMT is the format for writing numbers. @@ lua_number2str converts a number to a string. @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion. -@@ lua_str2number converts a string to a number. */ #define LUA_NUMBER_SCAN "%lf" #define LUA_NUMBER_FMT "%.14g" #define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n)) #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */ -#define lua_str2number(s,p) strtod((s), (p)) /* -@@ The luai_num* macros define the primitive operations over numbers. +@@ lua_str2number converts a decimal numeric string to a number. +@@ lua_strx2number converts an hexadecimal numeric string to a number. +** In C99, 'strtod' do both conversions. C89, however, has no function +** to convert floating hexadecimal strings to numbers. For these +** systems, you can leave 'lua_strx2number' undefined and Lua will +** provide its own implementation. */ -#if defined(LUA_CORE) -#include <math.h> -#define luai_numadd(a,b) ((a)+(b)) -#define luai_numsub(a,b) ((a)-(b)) -#define luai_nummul(a,b) ((a)*(b)) -#define luai_numdiv(a,b) ((a)/(b)) -#define luai_nummod(a,b) ((a) - floor((a)/(b))*(b)) -#define luai_numpow(a,b) (pow(a,b)) -#define luai_numunm(a) (-(a)) -#define luai_numeq(a,b) ((a)==(b)) -#define luai_numlt(a,b) ((a)<(b)) -#define luai_numle(a,b) ((a)<=(b)) -#define luai_numisnan(a) (!luai_numeq((a), (a))) +#define lua_str2number(s,p) strtod((s), (p)) + +#if defined(LUA_USE_STRTODHEX) +#define lua_strx2number(s,p) strtod((s), (p)) #endif /* -@@ lua_number2int is a macro to convert lua_Number to int. -@@ lua_number2integer is a macro to convert lua_Number to lua_Integer. -** CHANGE them if you know a faster way to convert a lua_Number to -** int (with any rounding method and without throwing errors) in your -** system. In Pentium machines, a naive typecast from double to int -** in C is extremely slow, so any alternative is worth trying. +@@ The luai_num* macros define the primitive operations over numbers. */ -/* On a Pentium, resort to a trick */ -#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \ - (defined(__i386) || defined (_M_IX86) || defined(__i386__)) - -/* On a Microsoft compiler, use assembler */ -#if defined(_MSC_VER) - -#define lua_number2int(i,d) __asm fld d __asm fistp i -#define lua_number2integer(i,n) lua_number2int(i, n) - -/* the next trick should work on any Pentium, but sometimes clashes - with a DirectX idiosyncrasy */ -#else - -union luai_Cast { double l_d; long l_l; }; -#define lua_number2int(i,d) \ - { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; } -#define lua_number2integer(i,n) lua_number2int(i, n) - +/* the following operations need the math library */ +#if defined(lobject_c) || defined(lvm_c) +#include <math.h> +#define luai_nummod(L,a,b) ((a) - floor((a)/(b))*(b)) +#define luai_numpow(L,a,b) (pow(a,b)) #endif - -/* this option always works, but may be slow */ -#else -#define lua_number2int(i,d) ((i)=(int)(d)) -#define lua_number2integer(i,d) ((i)=(lua_Integer)(d)) - +/* these are quite standard operations */ +#if defined(LUA_CORE) +#define luai_numadd(L,a,b) ((a)+(b)) +#define luai_numsub(L,a,b) ((a)-(b)) +#define luai_nummul(L,a,b) ((a)*(b)) +#define luai_numdiv(L,a,b) ((a)/(b)) +#define luai_numunm(L,a) (-(a)) +#define luai_numeq(a,b) ((a)==(b)) +#define luai_numlt(L,a,b) ((a)<(b)) +#define luai_numle(L,a,b) ((a)<=(b)) +#define luai_numisnan(L,a) (!luai_numeq((a), (a))) #endif -/* }================================================================== */ /* -@@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment. -** CHANGE it if your system requires alignments larger than double. (For -** instance, if your system supports long doubles and they must be -** aligned in 16-byte boundaries, then you should add long double in the -** union.) Probably you do not need to change this. +@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger. +** CHANGE that if ptrdiff_t is not adequate on your machine. (On most +** machines, ptrdiff_t gives a good choice between int or long.) */ -#define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } - +#define LUA_INTEGER ptrdiff_t /* -@@ LUAI_THROW/LUAI_TRY define how Lua does exception handling. -** CHANGE them if you prefer to use longjmp/setjmp even with C++ -** or if want/don't to use _longjmp/_setjmp instead of regular -** longjmp/setjmp. By default, Lua handles errors with exceptions when -** compiling as C++ code, with _longjmp/_setjmp when asked to use them, -** and with longjmp/setjmp otherwise. +@@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned. +** It must have at least 32 bits. */ -#if defined(__cplusplus) -/* C++ exceptions */ -#define LUAI_THROW(L,c) throw(c) -#define LUAI_TRY(L,c,a) try { a } catch(...) \ - { if ((c)->status == 0) (c)->status = -1; } -#define luai_jmpbuf int /* dummy variable */ - -#elif defined(LUA_USE_ULONGJMP) -/* in Unix, try _longjmp/_setjmp (more efficient) */ -#define LUAI_THROW(L,c) _longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#else -/* default handling with long jumps */ -#define LUAI_THROW(L,c) longjmp((c)->b, 1) -#define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a } -#define luai_jmpbuf jmp_buf - -#endif +#define LUA_UNSIGNED unsigned LUA_INT32 -/* -@@ LUA_MAXCAPTURES is the maximum number of captures that a pattern -@* can do during pattern-matching. -** CHANGE it if you need more captures. This limit is arbitrary. -*/ -#define LUA_MAXCAPTURES 32 - +#if defined(LUA_CORE) /* { */ -/* -@@ lua_tmpnam is the function that the OS library uses to create a -@* temporary name. -@@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam. -** CHANGE them if you have an alternative to tmpnam (which is considered -** insecure) or if you want the original tmpnam anyway. By default, Lua -** uses tmpnam except when POSIX is available, where it uses mkstemp. -*/ -#if defined(loslib_c) || defined(luaall_c) +#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ -#if defined(LUA_USE_MKSTEMP) -#include <unistd.h> -#define LUA_TMPNAMBUFSIZE 32 -#define lua_tmpnam(b,e) { \ - strcpy(b, "/tmp/lua_XXXXXX"); \ - e = mkstemp(b); \ - if (e != -1) close(e); \ - e = (e == -1); } +/* On a Microsoft compiler on a Pentium, use assembler to avoid clashes + with a DirectX idiosyncrasy */ +#if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86) /* { */ -#else -#define LUA_TMPNAMBUFSIZE L_tmpnam -#define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } -#endif +#define MS_ASMTRICK -#endif +#else /* }{ */ +/* the next definition uses a trick that should work on any machine + using IEEE754 with a 32-bit integer type */ +#define LUA_IEEE754TRICK /* -@@ lua_popen spawns a new process connected to the current one through -@* the file streams. -** CHANGE it if you have a way to implement it in your system. +@@ LUA_IEEEENDIAN is the endianness of doubles in your machine +** (0 for little endian, 1 for big endian); if not defined, Lua will +** check it dynamically. */ -#if defined(LUA_USE_POPEN) - -#define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m)) -#define lua_pclose(L,file) ((void)L, (pclose(file) != -1)) - -#elif defined(LUA_WIN) - -#define lua_popen(L,c,m) ((void)L, _popen(c,m)) -#define lua_pclose(L,file) ((void)L, (_pclose(file) != -1)) - -#else - -#define lua_popen(L,c,m) ((void)((void)c, m), \ - luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0) -#define lua_pclose(L,file) ((void)((void)L, file), 0) - +/* check for known architectures */ +#if defined(__i386__) || defined(__i386) || defined(__X86__) || \ + defined (__x86_64) +#define LUA_IEEEENDIAN 0 +#elif defined(__POWERPC__) || defined(__ppc__) +#define LUA_IEEEENDIAN 1 #endif -/* -@@ LUA_DL_* define which dynamic-library system Lua should use. -** CHANGE here if Lua has problems choosing the appropriate -** dynamic-library system for your platform (either Windows' DLL, Mac's -** dyld, or Unix's dlopen). If your system is some kind of Unix, there -** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for -** it. To use dlopen you also need to adapt the src/Makefile (probably -** adding -ldl to the linker options), so Lua does not select it -** automatically. (When you change the makefile to add -ldl, you must -** also add -DLUA_USE_DLOPEN.) -** If you do not want any kind of dynamic library, undefine all these -** options. -** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD. -*/ -#if defined(LUA_USE_DLOPEN) -#define LUA_DL_DLOPEN -#endif +#endif /* } */ -#if defined(LUA_WIN) -#define LUA_DL_DLL -#endif +#endif /* } */ +#endif /* } */ -/* -@@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State -@* (the data goes just *before* the lua_State pointer). -** CHANGE (define) this if you really need that. This value must be -** a multiple of the maximum alignment required for your machine. -*/ -#define LUAI_EXTRASPACE 0 - - -/* -@@ luai_userstate* allow user-specific actions on threads. -** CHANGE them if you defined LUAI_EXTRASPACE and need to do something -** extra when a thread is created/deleted/resumed/yielded. -*/ -#define luai_userstateopen(L) ((void)L) -#define luai_userstateclose(L) ((void)L) -#define luai_userstatethread(L,L1) ((void)L) -#define luai_userstatefree(L) ((void)L) -#define luai_userstateresume(L,n) ((void)L) -#define luai_userstateyield(L,n) ((void)L) +/* }================================================================== */ /* -@@ LUA_INTFRMLEN is the length modifier for integer conversions -@* in 'string.format'. -@@ LUA_INTFRM_T is the integer type correspoding to the previous length -@* modifier. -** CHANGE them if your system supports long long or does not support long. +@@ LUA_NANTRICK_LE/LUA_NANTRICK_BE controls the use of a trick to +** pack all types into a single double value, using NaN values to +** represent non-number values. The trick only works on 32-bit machines +** (ints and pointers are 32-bit values) with numbers represented as +** IEEE 754-2008 doubles with conventional endianess (12345678 or +** 87654321), in CPUs that do not produce signaling NaN values (all NaNs +** are quiet). */ +#if defined(LUA_CORE) && \ + defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) /* { */ -#if defined(LUA_USELONGLONG) +/* little-endian architectures that satisfy those conditions */ +#if defined(__i386__) || defined(__i386) || defined(__X86__) || \ + defined(_M_IX86) -#define LUA_INTFRMLEN "ll" -#define LUA_INTFRM_T long long +#define LUA_NANTRICK_LE -#else +#endif -#define LUA_INTFRMLEN "l" -#define LUA_INTFRM_T long +#endif /* } */ -#endif |