/*** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $** Configuration file for Lua** See Copyright Notice in lua.h*/#ifndef lconfig_h#define lconfig_h#include <limits.h>#include <stddef.h>/*** ==================================================================** 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#if !defined(LUA_ANSI) && defined(_WIN32)#define LUA_WIN#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 */#endif#if defined(LUA_USE_MACOSX)#define LUA_USE_POSIX#define LUA_DL_DYLD /* does not need extra library */#endif/*@@ LUA_USE_POSIX includes all functionallity listed as X/Open System@* Interfaces Extension (XSI).** CHANGE it (define it) if your system is XSI compatible.*/#if defined(LUA_USE_POSIX)#define LUA_USE_MKSTEMP#define LUA_USE_ISATTY#define LUA_USE_POPEN#define LUA_USE_ULONGJMP#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@* 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)/*** In Windows, any exclamation mark ('!') in the path is replaced by the** path of the directory of the executable file of the current process.*/#define LUA_LDIR "!\\lua\\"#define LUA_CDIR "!\\"#define LUA_PATH_DEFAULT \ ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua"#define LUA_CPATH_DEFAULT \ ".\\?.dll;" LUA_CDIR"?.dll;" LUA_CDIR"loadall.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;" \ LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua"#define LUA_CPATH_DEFAULT \ "./?.so;" LUA_CDIR"?.so;" LUA_CDIR"loadall.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.@@ 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.)*/#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_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_USE_ISATTY)#include <unistd.h>#define lua_stdin_is_tty() isatty(0)#elif defined(LUA_WIN)#include <io.h>#include <stdio.h>#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_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.*/#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_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').*/#undef 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_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/*@@ 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'*/#define LUA_COMPAT_OPENLIB/*@@ 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 <assert.h>#define luai_apicheck(L,o) { (void)L; assert(o); }#else#define luai_apicheck(L,o) { (void)L; }#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. (must be smaller than** -LUA_REGISTRYINDEX)*/#define LUAI_MAXCSTACK 8000/*** {==================================================================** 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/*@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.*/#define LUAL_BUFFERSIZE BUFSIZ/* }================================================================== *//*** {==================================================================@@ 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.** ===================================================================*/#define LUA_NUMBER_DOUBLE#define LUA_NUMBER double/*@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'@* over a number.*/#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.*/#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)))#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.*//* 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 */#elseunion 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)#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))#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.*/#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 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.*/#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/*@@ 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_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); }#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_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)#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#if defined(LUA_WIN)#define LUA_DL_DLL#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.*/#if defined(LUA_USELONGLONG)#define LUA_INTFRMLEN "ll"#define LUA_INTFRM_T long long#else#define LUA_INTFRMLEN "l"#define LUA_INTFRM_T long#endif/* =================================================================== *//*** Local configuration. You can use this space to add your redefinitions** without modifying the main part of the file.*/#endif