luaconf.h
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- /*
- ** $Id: luaconf.h,v 1.1 2007-05-24 23:45:56 dirkpitt2050 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.
- */
- #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