reference/html/gluaconf_8h_source.html

/*

** $Id: luaconf.h $

** Configuration file for Lua

** See Copyright Notice in lua.h

*/


#ifndef luaconf_h

#define luaconf_h


/* Used by C code generated by mutex.lua */

#define BA_LUA_LIB


#include <limits.h>

#include <stddef.h>

#include <HttpTrace.h>

#undef LoadString


#define LUA_FLOORN2I        1


/* lstate.c : the seed is used to randomize hashes */

BA_API unsigned int baluai_makeseed(void);

#define luai_makeseed() baluai_makeseed()

#if !defined(lua_writestringerror)

#define lua_writestringerror(s,p) HttpTrace_printf(0, (s), (p))

#endif


#if !defined(lua_writestring)

#define lua_writestring(s,l)   HttpTrace_write(0,s,(int)l)

#endif


#if !defined(lua_writeline)

#define lua_writeline()  (HttpTrace_write(0,"\n", 1), HttpTrace_flush())

#endif


#if USE_DBGMON

struct lua_State;

BA_API void LDbgMon_userstatethread(struct lua_State* L, struct lua_State* L1);

BA_API void LDbgMon_userstatefree(struct lua_State* L, struct lua_State* L1);

#define luai_userstatethread(L,L1) LDbgMon_userstatethread(L,L1)

#define luai_userstatefree(L,L1) LDbgMon_userstatefree(L,L1)

#endif


/*

** ===================================================================

** General Configuration File for Lua

**

** Some definitions here can be changed externally, through the compiler

** (e.g., with '-D' options): They are commented out or protected

** by '#if !defined' guards. However, several other definitions

** should be changed directly here, either because they affect the

** Lua ABI (by making the changes here, you ensure that all software

** connected to Lua, such as C libraries, will be compiled with the same

** configuration); or because they are seldom changed.

**

** Search for "@@" to find all configurable definitions.

** ===================================================================

*/


/*

** {====================================================================

** System Configuration: macros to adapt (if needed) Lua to some

** particular platform, for instance restricting it to C89.

** =====================================================================

*/


/*

@@ LUA_USE_C89 controls the use of non-ISO-C89 features.

** Define it if you want Lua to avoid the use of a few C99 features

** or Windows-specific features on Windows.

*/

/* #define LUA_USE_C89 */


/*

** By default, Lua on Windows use (some) specific Windows features

*/

#if !defined(BAS_RTOS_WINDOWS_SIM) && !defined(__INTIME__)

#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)

#define LUA_USE_WINDOWS  /* enable goodies for regular Windows */

#endif

#endif


#if defined(LUA_USE_WINDOWS)

#define LUA_DL_DLL      /* enable support for DLL */

#define LUA_USE_C89     /* broadly, Windows is C89 */

#endif


/*

** When POSIX DLL ('LUA_USE_DLOPEN') is enabled, the Lua stand-alone

** application will try to dynamically link a 'readline' facility

** for its REPL.  In that case, LUA_READLINELIB is the name of the

** library it will look for those facilities.  If lua.c cannot open

** the specified library, it will generate a warning and then run

** without 'readline'.  If that macro is not defined, lua.c will not

** use 'readline'.

*/


#ifndef LUA_NO_DLOPEN


#if defined(LUA_USE_LINUX)

#define LUA_USE_POSIX

#define LUA_USE_DLOPEN          /* needs an extra library: -ldl */

#define LUA_READLINELIB         "libreadline.so"

#endif


#if defined(LUA_USE_MACOSX)

#define LUA_USE_POSIX

#define LUA_USE_DLOPEN          /* macOS does not need -ldl */

#define LUA_READLINELIB         "libedit.dylib"

#endif


#if defined(LUA_USE_IOS)

#define LUA_USE_POSIX

#define LUA_USE_DLOPEN

#endif


#endif /* LUA_NO_DLOPEN */


#if defined(LUA_USE_C89) && defined(LUA_USE_POSIX)

#error "POSIX is not compatible with C89"

#endif


/*

@@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits.

*/

#define LUAI_IS32INT    ((UINT_MAX >> 30) >= 3)


/* }================================================================== */


/*

** {==================================================================

** Configuration for Number types. These options should not be

** set externally, because any other code connected to Lua must

** use the same configuration.

** ===================================================================

*/


/*

@@ LUA_INT_TYPE defines the type for Lua integers.

@@ LUA_FLOAT_TYPE defines the type for Lua floats.

** Lua should work fine with any mix of these options supported

** by your C compiler. The usual configurations are 64-bit integers

** and 'double' (the default), 32-bit integers and 'float' (for

** restricted platforms), and 'long'/'double' (for C compilers not

** compliant with C99, which may not have support for 'long long').

*/


/* predefined options for LUA_INT_TYPE */

#define LUA_INT_INT             1

#define LUA_INT_LONG            2

#define LUA_INT_LONGLONG        3


/* predefined options for LUA_FLOAT_TYPE */

#define LUA_FLOAT_FLOAT         1

#define LUA_FLOAT_DOUBLE        2

#define LUA_FLOAT_LONGDOUBLE    3


/* Default configuration ('long long' and 'double', for 64-bit Lua) */

#define LUA_INT_DEFAULT         LUA_INT_LONGLONG

#define LUA_FLOAT_DEFAULT       LUA_FLOAT_DOUBLE


/*

@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats.

*/

/* #define LUA_32BITS */


/*

@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for

** C89 ('long' and 'double'); Windows always has '__int64', so it does

** not need to use this case.

*/

#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)

#define LUA_C89_NUMBERS         1

#else

#define LUA_C89_NUMBERS         0

#endif


#if defined(LUA_32BITS) /* { */

/*

** 32-bit integers and 'float'

*/

#if LUAI_IS32INT  /* use 'int' if big enough */

#define LUA_INT_TYPE    LUA_INT_INT

#else  /* otherwise use 'long' */

#define LUA_INT_TYPE    LUA_INT_LONG

#endif

#define LUA_FLOAT_TYPE  LUA_FLOAT_FLOAT


#elif LUA_C89_NUMBERS   /* }{ */

/*

** largest types available for C89 ('long' and 'double')

*/

#define LUA_INT_TYPE    LUA_INT_LONG

#define LUA_FLOAT_TYPE  LUA_FLOAT_DOUBLE


#else           /* }{ */

/* use defaults */


#define LUA_INT_TYPE    LUA_INT_DEFAULT

#define LUA_FLOAT_TYPE  LUA_FLOAT_DEFAULT


#endif                          /* } */


/* }================================================================== */


/*

** {==================================================================

** Configuration for Paths.

** ===================================================================

*/


/*

** LUA_PATH_SEP is the character that separates templates in a path.

** LUA_PATH_MARK is the string that marks the substitution points in a

** template.

** LUA_EXEC_DIR in a Windows path is replaced by the executable's

** directory.

*/

#define LUA_PATH_SEP            ";"

#define LUA_PATH_MARK           "?"

#define LUA_EXEC_DIR            "!"


/*

@@ 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.

*/


#define LUA_VDIR        LUA_VERSION_MAJOR "." LUA_VERSION_MINOR

#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_SHRDIR      "!\\..\\share\\lua\\" LUA_VDIR "\\"


#if !defined(LUA_PATH_DEFAULT)

#define LUA_PATH_DEFAULT  \

                LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \

                LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \

                LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \

                ".\\?.lua;" ".\\?\\init.lua"

#endif


#if !defined(LUA_CPATH_DEFAULT)

#define LUA_CPATH_DEFAULT \

                LUA_CDIR"?.dll;" \

                LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \

                LUA_CDIR"loadall.dll;" ".\\?.dll"

#endif


#else                   /* }{ */


#define LUA_ROOT        "/usr/local/"

#define LUA_LDIR        LUA_ROOT "share/lua/" LUA_VDIR "/"

#define LUA_CDIR        LUA_ROOT "lib/lua/" LUA_VDIR "/"


#if !defined(LUA_PATH_DEFAULT)

#define LUA_PATH_DEFAULT  \

                LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \

                LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" \

                "./?.lua;" "./?/init.lua"

#endif


#if !defined(LUA_CPATH_DEFAULT)

#define LUA_CPATH_DEFAULT \

                LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"

#endif


#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(LUA_DIRSEP)


#if defined(_WIN32)

#define LUA_DIRSEP      "\\"

#else

#define LUA_DIRSEP      "/"

#endif


#endif


/*

** LUA_IGMARK is a mark to ignore all after it when building the

** module name (e.g., used to build the luaopen_ function name).

** Typically, the suffix after the mark is the module version,

** as in "mod-v1.2.so".

*/

#define LUA_IGMARK              "-"


/* }================================================================== */


/*

** {==================================================================

** Marks for exported symbols in the C code

** ===================================================================

*/


/*

@@ LUA_API is a mark for all core API 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_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


#if defined(__cplusplus)

/* Lua uses the "C name" when calling open functions */

#define LUAMOD_API      extern "C"

#else

#define LUAMOD_API      LUA_API

#endif


/* }================================================================== */


/*

** {==================================================================

** Compatibility with previous versions

** ===================================================================

*/


/*

@@ LUA_COMPAT_GLOBAL avoids 'global' being a reserved word

*/

#define LUA_COMPAT_GLOBAL


/*

@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated

** functions in the mathematical library.

** (These functions were already officially removed in 5.3;

** nevertheless they are still available here.)

*/

/* #define LUA_COMPAT_MATHLIB */


/*

@@ 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.

** (Once more, these macros were officially removed in 5.3, but they are

** still available here.)

*/

#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)


/* }================================================================== */


/*

** {==================================================================

** Configuration for Numbers (low-level part).

** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*

** satisfy your needs.

** ===================================================================

*/


/*

@@ LUAI_UACNUMBER is the result of a 'default argument promotion'

@@ over a floating number.

@@ l_floatatt(x) corrects float attribute 'x' to the proper float type

** by prefixing it with one of FLT/DBL/LDBL.

@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.

@@ LUA_NUMBER_FMT is the format for writing floats with the maximum

** number of digits that respects tostring(tonumber(numeral)) == numeral.

** (That would be floor(log10(2^n)), where n is the number of bits in

** the float mantissa.)

@@ LUA_NUMBER_FMT_N is the format for writing floats with the minimum

** number of digits that ensures tonumber(tostring(number)) == number.

** (That would be LUA_NUMBER_FMT+2.)

@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.

@@ l_floor takes the floor of a float.

@@ lua_str2number converts a decimal numeral to a number.

*/


#define LUA_NZERO 0.0


/* The following definition is good for most cases here */


#define l_floor(x)              (l_mathop(floor)(x))


/* now the variable definitions */


#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT           /* { single float */


#define LUA_NUMBER      float


#define l_floatatt(n)           (FLT_##n)


#define LUAI_UACNUMBER  double


#define LUA_NUMBER_FRMLEN       ""

#define LUA_NUMBER_FMT          "%.7g"

#define LUA_NUMBER_FMT_N        "%.9g"


#define l_mathop(op)            op##f


#define lua_str2number(s,p)     strtof((s), (p))


#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE    /* }{ long double */


#define LUA_NUMBER      long double


#define l_floatatt(n)           (LDBL_##n)


#define LUAI_UACNUMBER  long double


#define LUA_NUMBER_FRMLEN       "L"

#define LUA_NUMBER_FMT          "%.19Lg"

#define LUA_NUMBER_FMT_N        "%.21Lg"


#define l_mathop(op)            op##l


#define lua_str2number(s,p)     strtold((s), (p))


#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE        /* }{ double */


#define LUA_NUMBER      double


#define l_floatatt(n)           (DBL_##n)


#define LUAI_UACNUMBER  double


#define LUA_NUMBER_FRMLEN       ""

#define LUA_NUMBER_FMT          "%.15g"

#define LUA_NUMBER_FMT_N        "%.17g"


#define l_mathop(op)            op


#define lua_str2number(s,p)     strtod((s), (p))


#else                                           /* }{ */


#error "numeric float type not defined"


#endif                                  /* } */


/*

@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.

@@ LUAI_UACINT is the result of a 'default argument promotion'

@@ over a LUA_INTEGER.

@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.

@@ LUA_INTEGER_FMT is the format for writing integers.

@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.

@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.

@@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED.

@@ lua_integer2str converts an integer to a string.

*/


/* The following definitions are good for most cases here */


#define LUA_INTEGER_FMT         "%" LUA_INTEGER_FRMLEN "d"


#define LUAI_UACINT             LUA_INTEGER


#define lua_integer2str(s,sz,n)  \

        l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))


/*

** use LUAI_UACINT here to avoid problems with promotions (which

** can turn a comparison between unsigneds into a signed comparison)

*/

#define LUA_UNSIGNED            unsigned LUAI_UACINT


/* now the variable definitions */


#if LUA_INT_TYPE == LUA_INT_INT         /* { int */


#define LUA_INTEGER             int

#define LUA_INTEGER_FRMLEN      ""


#define LUA_MAXINTEGER          INT_MAX

#define LUA_MININTEGER          INT_MIN


#define LUA_MAXUNSIGNED         UINT_MAX


#elif LUA_INT_TYPE == LUA_INT_LONG      /* }{ long */


#define LUA_INTEGER             long

#define LUA_INTEGER_FRMLEN      "l"


#define LUA_MAXINTEGER          LONG_MAX

#define LUA_MININTEGER          LONG_MIN


#define LUA_MAXUNSIGNED         ULONG_MAX


#elif LUA_INT_TYPE == LUA_INT_LONGLONG  /* }{ long long */


/* use presence of macro LLONG_MAX as proxy for C99 compliance */

#if defined(LLONG_MAX)          /* { */

/* use ISO C99 stuff */


#define LUA_INTEGER             long long

#define LUA_INTEGER_FRMLEN      "ll"


#define LUA_MAXINTEGER          LLONG_MAX

#define LUA_MININTEGER          LLONG_MIN


#define LUA_MAXUNSIGNED         ULLONG_MAX


#elif defined(LUA_USE_WINDOWS) /* }{ */

/* in Windows, can use specific Windows types */


#define LUA_INTEGER             __int64

#define LUA_INTEGER_FRMLEN      "I64"


#define LUA_MAXINTEGER          _I64_MAX

#define LUA_MININTEGER          _I64_MIN


#define LUA_MAXUNSIGNED         _UI64_MAX


#else                           /* }{ */


#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \

  or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"


#endif                          /* } */


#else                           /* }{ */


#error "numeric integer type not defined"


#endif                          /* } */


/* }================================================================== */


/*

** {==================================================================

** Dependencies with C99 and other C details

** ===================================================================

*/


/*

@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.

** (All uses in Lua have only one format item.)

*/

#define l_sprintf(s,sz,f,i)     basnprintf(s,sz,f,i)


/*

@@ lua_strx2number converts a hexadecimal numeral to a number.

** In C99, 'strtod' does that conversion. Otherwise, you can

** leave 'lua_strx2number' undefined and Lua will provide its own

** implementation.

*/

#if !defined(LUA_USE_C89)

#define lua_strx2number(s,p)            lua_str2number(s,p)

#endif


/*

@@ lua_pointer2str converts a pointer to a readable string in a

** non-specified way.

*/

#define lua_pointer2str(buff,sz,p)      l_sprintf(buff,sz,"%p",p)


/*

@@ lua_number2strx converts a float to a hexadecimal numeral.

** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.

** Otherwise, you can leave 'lua_number2strx' undefined and Lua will

** provide its own implementation.

*/

#if !defined(LUA_USE_C89)

#define lua_number2strx(L,b,sz,f,n)  \

        ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))

#endif


/*

** 'strtof' and 'opf' variants for math functions are not valid in

** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the

** availability of these variants. ('math.h' is already included in

** all files that use these macros.)

*/

#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))

#undef l_mathop  /* variants not available */

#undef lua_str2number

#define l_mathop(op)            (lua_Number)op  /* no variant */

#define lua_str2number(s,p)     ((lua_Number)strtod((s), (p)))

#endif


/*

@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation

** functions.  It must be a numerical type; Lua will use 'intptr_t' if

** available, otherwise it will use 'ptrdiff_t' (the nearest thing to

** 'intptr_t' in C89)

*/

#define LUA_KCONTEXT    ptrdiff_t


#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \

    __STDC_VERSION__ >= 199901L

#include <stdint.h>

#if defined(INTPTR_MAX)  /* even in C99 this type is optional */

#undef LUA_KCONTEXT

#define LUA_KCONTEXT    intptr_t

#endif

#endif


/*

@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).

** Change that if you do not want to use C locales. (Code using this

** macro must include the header 'locale.h'.)

*/

#if !defined(lua_getlocaledecpoint)

#define lua_getlocaledecpoint()         (localeconv()->decimal_point[0])

#endif


/*

** macros to improve jump prediction, used mostly for error handling

** and debug facilities. (Some macros in the Lua API use these macros.

** Define LUA_NOBUILTIN if you do not want '__builtin_expect' in your

** code.)

*/

#if !defined(luai_likely)


#if defined(__GNUC__) && !defined(LUA_NOBUILTIN)

#define luai_likely(x)          (__builtin_expect(((x) != 0), 1))

#define luai_unlikely(x)        (__builtin_expect(((x) != 0), 0))

#else

#define luai_likely(x)          (x)

#define luai_unlikely(x)        (x)

#endif


#endif


/* }================================================================== */


/*

** {==================================================================

** Language Variations

** =====================================================================

*/


/*

@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some

** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from

** numbers to strings. Define LUA_NOCVTS2N to turn off automatic

** coercion from strings to numbers.

*/

/* #define LUA_NOCVTN2S */

/* #define LUA_NOCVTS2N */


/*

@@ LUA_USE_APICHECK turns on several consistency checks on the C API.

** Define it as a help when debugging C code.

*/

/* #define LUA_USE_APICHECK */


/* }================================================================== */


/*

** {==================================================================

** Macros that affect the API and must be stable (that is, must be the

** same when you compile Lua and when you compile code that links to

** Lua).

** =====================================================================

*/


/*

@@ LUA_EXTRASPACE defines the size of a raw memory area associated with

** a Lua state with very fast access.

** CHANGE it if you need a different size.

*/

#define LUA_EXTRASPACE          (sizeof(void *))


/*

@@ 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


/*

@@ LUAL_BUFFERSIZE is the initial buffer size used by the lauxlib

** buffer system.

*/

#define LUAL_BUFFERSIZE   ((int)(16 * sizeof(void*) * sizeof(lua_Number)))


/*

@@ LUAI_MAXALIGN defines fields that, when used in a union, ensure

** maximum alignment for the other items in that union.

*/

#define LUAI_MAXALIGN  lua_Number n; double u; void *s; lua_Integer i; long l


/* }================================================================== */


/* =================================================================== */


/*

** Local configuration. You can use this space to add your redefinitions

** without modifying the main part of the file.

*/


#endif


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