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//========= Copyright Valve Corporation, All rights reserved. ============//
/*
** $Id: luaconf.h,v 1.82 2006/04/10 18:27:23 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_registry'** 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.*/#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
/*
@@ 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 */#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)
#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, 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
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