/* ** $Id: luaconf.h,v 1.53 2005/06/13 21:20:28 roberto Exp roberto $ ** Configuration file for Lua ** See Copyright Notice in lua.h */ #ifndef lconfig_h #define lconfig_h #include #include /* ** ================================================================== ** Search for "@@" to find all configurable definitions. ** =================================================================== */ /* @@ LUA_ANSI controls the use of non-ansi features. ** CHANGE it (define it) if you want Lua to avoid the use of any ** non-ansi feature or library. */ #if defined(__STRICT_ANSI__) #define LUA_ANSI #endif /* @@ 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. */ #if defined(_WIN32) #define LUA_ROOT "C:\\Program Files\\Lua51" #define LUA_LDIR LUA_ROOT "\\lua" #define LUA_CDIR LUA_ROOT "\\dll" #define LUA_PATH_DEFAULT \ "?.lua;" LUA_LDIR"\\?.lua;" LUA_LDIR"\\?\\init.lua" #define LUA_CPATH_DEFAULT \ "?.dll;" "l?.dll;" LUA_CDIR"\\?.dll;" LUA_CDIR"\\l?.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" #define LUA_PATH_DEFAULT \ "./?.lua;" LUA_LDIR"/?.lua;" LUA_LDIR"/?/init.lua" #define LUA_CPATH_DEFAULT \ "./?.so;" "./l?.so;" LUA_CDIR"/?.so;" LUA_CDIR"/l?.so" #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(_WIN32) #define LUA_DIRSEP "\\" #else #define LUA_DIRSEP "/" #endif /* @@ LUA_PATHSEP is the character that separates templates in a path. ** CHANGE it if for some reason your system cannot use a ** semicolon. (E.g., if a semicolon is a common character in ** file/directory names.) Probably you do not need to change this. */ #define LUA_PATHSEP ';' /* @@ LUA_PATH_MARK is the string that marks the substitution points in a @* template. ** CHANGE it if for some reason your system cannot use an interrogation ** mark. (E.g., if an interogation mark is a common character in ** file/directory names.) Probably you do not need to change this. */ #define LUA_PATH_MARK "?" /* @@ 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 LUA_INTEGER ptrdiff_t /* @@ LUA_API is a mark for all core API functions. @@ LUALIB_API is a mark for all standard library 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 /* @@ 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. ** 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__) #define LUAI_FUNC __attribute__((visibility("hidden"))) extern #define LUAI_DATA LUAI_FUNC #else #define LUAI_FUNC extern #define LUAI_DATA extern #endif /* @@ lua_assert describes the internal assertions in Lua. ** CHANGE that only if you need to debug Lua. */ #define lua_assert(c) ((void)0) /* @@ LUA_QL describes how error messages quote program elements. ** CHANGE it if you want a different appearance. */ #define LUA_QL(x) "'" x "'" #define LUA_QS LUA_QL("%s") /* @@ 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 /* ** {================================================================== ** 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. */ #if !defined(LUA_ANSI) && defined(_POSIX_C_SOURCE) #include #define lua_stdin_is_tty() isatty(0) #elif !defined(LUA_ANSI) && defined(_WIN32) #include #include #define lua_stdin_is_tty() _isatty(_fileno(stdin)) #else #define lua_stdin_is_tty() 1 /* assume stdin is a tty */ #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.) */ #define LUA_PROMPT "> " #define LUA_PROMPT2 ">> " /* @@ 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). */ #if !defined(LUA_ANSI) && defined(LUA_USE_READLINE) #include #include #include #define lua_readline(L,b,p) (((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) free(b) #else #define lua_readline(L,b,p) \ (fputs(p, stdout), fflush(stdout), /* show prompt */ \ fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */ #define lua_saveline(L,idx) ((void)0) #define lua_freeline(L,b) ((void)0) #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. */ #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */ /* @@ 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. */ #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */ /* @@ 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. */ #undef LUA_COMPAT_GETN /* @@ LUA_COMPAT_PATH controls compatibility about LUA_PATH. ** CHANGE it (define it) if you want 'require' to look for global ** LUA_PATH before checking package.path. */ #undef LUA_COMPAT_PATH /* @@ 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'). */ #define LUA_COMPAT_LOADLIB /* @@ 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'. */ #define LUA_COMPAT_MOD /* @@ 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 [[...]]. */ #define LUA_COMPAT_LSTR 1 /* @@ LUA_COMPAT_FIND controls compatibility with old 'string.find' behavior. ** CHANGE it to undefined as soon as your programs use 'string.find' only ** to find patterns. */ /*#define LUA_COMPAT_FIND*/ /* @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name. ** CHANGE it to undefined as soon as you rename 'string.gfind' to ** 'string.gmatch'. */ #define LUA_COMPAT_GFIND /* @@ 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. */ #if defined(LUA_USE_APICHECK) #include #define luai_apicheck(L,o) assert(o) #else /* (By default lua_assert is empty, so luai_apicheck is also empty.) */ #define luai_apicheck(L,o) lua_assert(o) #endif /* @@ LUAI_BITSINT defines the number of bits in an int. ** CHANGE here if Lua cannot automatically detect the number of bits of ** your machine. Probably you do not need to change this. */ /* avoid overflows in comparison */ #if INT_MAX-20 < 32760 #define LUAI_BITSINT 16 #elif INT_MAX > 2147483640L /* int has at least 32 bits */ #define LUAI_BITSINT 32 #else #error "you must define LUA_BITSINT with number of bits in an integer" #endif /* @@ LUAI_UINT32 is an unsigned integer with at least 32 bits. @@ LUAI_INT32 is an signed integer with at least 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. */ #if LUAI_BITSINT >= 32 #define LUAI_UINT32 unsigned int #define LUAI_INT32 int #define LUAI_MAXINT32 INT_MAX #define LUAI_UMEM size_t #define LUAI_MEM ptrdiff_t #else /* 16-bit ints */ #define LUAI_UINT32 unsigned long #define LUAI_INT32 long #define LUAI_MAXINT32 LONG_MAX #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. */ #define LUAI_MAXCSTACK 2048 /* ** {================================================================== ** 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. */ #define LUAI_MAXCCALLS 200 /* @@ LUAI_MAXVARS is the maximum number of local variables per function @* (must be smaller than 250). */ #define LUAI_MAXVARS 200 /* @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function @* (must be smaller than 250). */ #define LUAI_MAXUPVALUES 60 /* @@ LUAI_MAXEXPWHILE is the maximum size of code for expressions @* controling a 'while' loop. */ #define LUAI_MAXEXPWHILE 100 /* @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. */ #define LUAL_BUFFERSIZE BUFSIZ /* }================================================================== */ /* @@ lua_number2int is a macro to convert lua_Number to int. ** CHANGE that 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. */ /* On a gcc/Pentium, resort to assembler */ #if !defined(LUA_ANSI) && defined(__GNUC__) && defined(__i386) #define lua_number2int(i,d) __asm__ ("fistpl %0":"=m"(i):"t"(d):"st") /* On Windows/Pentium, resort to assembler */ #elif !defined(LUA_ANSI) && defined(_MSC_VER) && defined(_M_IX86) #define lua_number2int(i,d) __asm fld d __asm fistp i /* on Pentium machines compliant with C99, you can try lrint */ #elif defined (__i386) && defined(__STDC_VERSION__) && \ (__STDC_VERSION__ >= 199900L) #define lua_number2int(i,d) ((i)=lrint(d)) /* this option always works, but may be slow */ #else #define lua_number2int(i,d) ((i)=(int)(d)) #endif /* @@ lua_number2integer is a macro to convert lua_Number to lua_Integer. ** CHANGE (see lua_number2int). */ /* On a gcc or Windows/Pentium, resort to assembler */ #if (defined(__GNUC__) && defined(__i386)) || \ (defined(_MSC_VER) && defined(_M_IX86)) #define lua_number2integer(i,n) lua_number2int(i, n) /* this option always works, but may be slow */ #else #define lua_number2integer(i,d) ((i)=(lua_Integer)(d)) #endif /* ** {================================================================== @@ LUA_NUMBER is the type of numbers in Lua. ** CHANGE the following definitions only if you want to build Lua ** with a number type different from double. You may also need to ** change lua_number2int & lua_number2integer. ** =================================================================== */ /* @@ LUAI_UACNUMBER is the result of an 'usual argument conversion' @* over a number. */ #define LUA_NUMBER double #define LUAI_UACNUMBER double /* @@ LUA_NUMBER_SCAN is the format for reading numbers. @@ 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. */ #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_nummod(L,a,b) ((a) - floor((a)/(b))*(b)) #define luai_numpow(L,a,b) pow(a,b) #define luai_numunm(L,a) (-(a)) #define luai_numeq(L,a,b) ((a)==(b)) #define luai_numlt(L,a,b) ((a)<(b)) #define luai_numle(L,a,b) ((a)<=(b)) /* }================================================================== */ /* @@ 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. */ #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; } /* @@ 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 want 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 compiling as C code ** in a Unix system, and with longjmp/setjmp otherwise. */ #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_ANSI) && (defined(unix) || defined(__unix) || \ defined(__unix__)) /* 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 /* @@ 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 /* @@ 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_ANSI) && defined(_POSIX_C_SOURCE) #include #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); } #else #define LUA_TMPNAMBUFSIZE L_tmpnam #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); } #endif #endif /* @@ 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. */ #if !defined(LUA_ANSI) && defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 2 #define lua_popen(L,c,m) popen(c,m) #define lua_pclose(L,file) (pclose(file) != -1) #elif !defined(LUA_ANSI) && defined(_WIN32) #define lua_popen(L,c,m) _popen(c,m) #define lua_pclose(L,file) (_pclose(file) != -1) #else #define lua_popen(L,c,m) \ ((void)c, (void)m, luaL_error(L, LUA_QL("popen") "not supported"), NULL) #define lua_pclose(L,file) ((void)file, 0) #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 (or just remove these definitions). */ #if !defined(LUA_ANSI) #if defined(_WIN32) #define LUA_DL_DLL #elif defined(__APPLE__) && defined(__MACH__) #define LUA_DL_DYLD #elif defined(LUA_USE_DLOPEN) #define LUA_DL_DLOPEN #endif #endif /* @@ lua_lock/lua_unlock are macros for thread synchronization inside the @* Lua core. This is an attempt to simplify the implementation of a @* multithreaded version of Lua. ** CHANGE them only if you know what you are doing. All accesses to ** the global state and to global objects are synchronized. Because ** threads can read the stack of other threads (when running garbage ** collection), a thread must also synchronize any write-access to its ** own stack. Unsynchronized accesses are allowed only when reading its ** own stack, or when reading immutable fields from global objects (such ** as string values and udata values). */ #define lua_lock(L) ((void) 0) #define lua_unlock(L) ((void) 0) /* @@ lua_threadyield allows a thread switch in appropriate places in the core. ** CHANGE it only if you know what you are doing. (See lua_lock.) */ #define luai_threadyield(L) {lua_unlock(L); lua_lock(L);} /* @@ 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_userstateopen allows user-specific initialization on new threads. ** CHANGE it if you defined LUAI_EXTRASPACE and need to initialize that ** data whenever a new lua_State is created. */ #define luai_userstateopen(L) ((void)0) /* =================================================================== */ /* ** Local configuration. You can use this space to add your redefinitions ** without modifying the main part of the file. */ #endif