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- /*
- ** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $
- ** Configuration file for Lua
- ** See Copyright Notice in lua.h
- */
- #ifndef luaconf_h
- #define luaconf_h
- #include <limits.h>
- #include <stddef.h>
- #include <stdint.h>
- #include <stdbool.h>
- #include "user_config.h"
- /*
- ** ===================================================================
- ** The NodeMCU Lua environment support 2 compilation targets:
- **
- ** * The ESP8266 ans ESP32 embedded runtimes which are compiled using
- ** the GCC XTENSA cross-compiler toolchain.
- **
- ** * An extend version of the luac build for cross-compiling Lua
- ** sources for downloading to the ESP hardware. This is command
- ** line only and does not support any interactive dialogue or
- ** dynamically loaded libraries.
- **
- ** Note that we've removd the "how to fill this in comments so you
- ** can now see the actual content more easily. Also the two big
- ** boilerplate conditional sections "Configuration for Numbers" and
- ** "Dependencies with C99 and other C details" have been moved to
- ** the end of the include file to keep the information dense content
- ** at the front.
- ** ===================================================================
- */
- #ifdef __XTENSA__
- # define LUA_USE_ESP
- # define LUA_USE_ESP8266
- #else
- # define LUA_USE_HOST
- # define LUA_CROSS_COMPILER
- #endif
- #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
- # define LUA_USE_WINDOWS /* enable goodies for regular Windows */
- //# define LUA_USE_C89 /* We only support the VS2013 C or later */
- #elif defined(__APPLE__)
- # define LUA_USE_MACOSX
- # define LUA_USE_POSIX
- #else
- # define LUA_USE_LINUX
- //# define LUA_USE_POSIX
- #endif
- #define LUA_NODEMCU_NOCLOADERS
- //#define LUA_C89_NUMBERS
- #define LUAI_BITSINT 32
- /* predefined options for LUA_INT_TYPE */
- #define LUA_INT_INT 1
- #define LUA_INT_LONG 2
- #define LUA_INT_LONGLONG 3L
- /* predefined options for LUA_FLOAT_TYPE */
- #define LUA_FLOAT_FLOAT 1
- #define LUA_FLOAT_DOUBLE 2
- #define LUA_FLOAT_LONGDOUBLE 3
- /*
- ** default configuration for 64-bit Lua ('long long' and 'double')
- */
- #if 0
- #if defined(LUA_32BITS)
- /*
- ** 32-bit integers and 'float'
- */
- # define LUA_INT_TYPE LUA_INT_INT
- # define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
- #else
- # define LUA_INT_TYPE LUA_INT_LONGLONG
- # define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
- #endif
- #endif
- #ifdef LUA_NUMBER_64BITS
- # define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
- # define LUA_INT_TYPE LUA_INT_LONGLONG
- #else
- # define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
- # define LUA_INT_TYPE LUA_INT_INT
- #endif
- #ifdef LUA_NUMBER_INTEGRAL
- #error LUA_NUMBER_INTEGRAL is not supported in LUA5.3 builds
- #endif
- /*
- ** Configuration for Paths.
- **
- ** LUA_CPATH_DEFAULT is the default path that Lua uses to look for
- ** Dynamic C libraries are not used and ditto LUA_CPATH_DEFAULT
- */
- #define LUA_PATH_SEP ";"
- #define LUA_PATH_MARK "?"
- #define LUA_EXEC_DIR "!"
- #define LUA_PATH_DEFAULT "?.lc;?.lua"
- #if defined(_WIN32)
- #define LUA_DIRSEP "\\"
- #else
- #define LUA_DIRSEP "/"
- #endif
- /*
- ** {==================================================================
- ** 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.
- */
- #define LUA_API extern
- #define LUALIB_API LUA_API
- #define LUAMOD_API LUALIB_API
- /*
- @@ LUAI_FUNC, LUAI_DDEF and LUAI_DDEC are used to mark visibilty when
- ** building lua as a shared library. Used to tag private inter-module
- ** Lua internal functions.
- */
- //#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
- #define LUAI_FUNC extern
- #define LUAI_DDEC LUAI_FUNC
- #define LUAI_DDEF
- /*
- ** {==================================================================
- ** Compatibility with previous versions
- ** ===================================================================
- */
- //#define LUA_COMPAT_MATHLIB // retains several deprecated functions in math.
- //#define LUA_COMPAT_BITLIB // bit32 is separately implemented as a NodeMCU lib
- //#define LUA_COMPAT_IPAIRS // enables __ipairs meta which isn't used in NodeMCU
- #define LUA_NODEMCU_COMPAT_MATHLIB /* retains NodeMCU subset of mathlib */
- #define LUA_COMPAT_APIINTCASTS /* needed to enable NodeMCU modules to work on */
- /* both Lua 5.1 and Lua 5.3 */
- #define LUA_COMPAT_UNPACK /* needed to support a global 'unpack' */
- #define LUA_COMPAT_LOADERS /* keeps 'package.loaders' as a synonym for */
- /* 'package.searchers'. Used in our libraries */
- #define LUA_COMPAT_LOADSTRING /* keeps loadstring(s) as synonym for load(s) */
- #if 0
- #define lua_cpcall(L,f,u) \ // Not used in our module code
- (lua_pushcfunction(L, (f)), \
- lua_pushlightuserdata(L,(u)), \
- lua_pcall(L,1,0,0))
- #endif
- //#define LUA_COMPAT_LOG10 // math.log10 not used in NodeMCU
- //#define LUA_COMPAT_MAXN // math.maxn not used
- /* Compatbililty for some API calls withdrawn in Lua53 */
- #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)
- // #define LUA_COMPAT_MODULE // drop support for legacy module() format not used in our modules
- /**** May need to revisit this one *****/
- // #define LUA_COMPAT_FLOATSTRING // makes Lua format integral floats without a float mark
- #define LUA_KCONTEXT ptrdiff_t
- #define lua_getlocaledecpoint() '.'
- // #define LUA_NOCVTN2S // enable automatic coercion between
- // #define LUA_NOCVTS2N // strings and numbers
- #if defined(LUA_USE_APICHECK)
- #include <assert.h>
- #define luai_apicheck(l,e) assert(e)
- #endif
- #define LUA_EXTRASPACE (sizeof(void *)) // raw memory area associated with a Lua state
- #define LUAI_MAXSTACK 12000 // Maximum Lua stack size
- #define LUA_IDSIZE 60 // Maximum size for the description of the source
- /*
- @@ 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 header 'locale.h'.)
- */
- // of a function in debug information.
- #define LUAL_BUFFERSIZE 256 // NodeMCU setting because of stack limits
- #define LUA_QL(x) "'" x "'" // No longer used in lua53, but still used
- #define LUA_QS LUA_QL("%s") // in some of our apllication modules
- /*
- ** {==================================================================
- ** Other NodeMCU configuration.
- ** ===================================================================
- */
- #ifdef LUA_USE_ESP
- #define LUAI_USER_ALIGNMENT_T size_t
- #endif
- #define LUAI_GCPAUSE 110 /* 110% (wait memory to grow 10% before next gc) */
- /* }================================================================== */
- /*
- ** {==================================================================
- ** Configuration for Numbers.
- ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
- ** satisfy your needs.
- ** ===================================================================
- **
- @@ LUA_NUMBER is the floating-point type used by Lua.
- @@ LUAI_UACNUMBER is the result of a 'default argument promotion' over a floating number.
- @@ l_mathlim(x) corrects limit name '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.
- @@ lua_number2str converts a float to a string.
- @@ 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 numeric string to a number.
- */
- /* The following definitions are good for most cases here */
- #define l_floor(x) (l_mathop(floor)(x))
- #define lua_number2str(s,sz,n) \
- l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
- /*
- @@ lua_numbertointeger converts a float number to an integer, or
- ** returns 0 if float is not within the range of a lua_Integer.
- ** (The range comparisons are tricky because of rounding. The tests
- ** here assume a two-complement representation, where MININTEGER always
- ** has an exact representation as a float; MAXINTEGER may not have one,
- ** and therefore its conversion to float may have an ill-defined value.)
- */
- #define lua_numbertointeger(n,p) \
- ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
- (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
- (*(p) = (LUA_INTEGER)(n), 1))
- /* now the variable definitions */
- #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */
- #define LUA_NUMBER float
- #define l_mathlim(n) (FLT_##n)
- #define LUAI_UACNUMBER double
- #define LUA_NUMBER_FRMLEN ""
- #define LUA_NUMBER_FMT "%.7g"
- #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_mathlim(n) (LDBL_##n)
- #define LUAI_UACNUMBER long double
- #define LUA_NUMBER_FRMLEN "L"
- #define LUA_NUMBER_FMT "%.19Lg"
- #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_mathlim(n) (DBL_##n)
- #define LUAI_UACNUMBER double
- #define LUA_NUMBER_FRMLEN ""
- #define LUA_NUMBER_FMT "%.14g"
- #define l_mathop(op) op
- #define lua_str2number(s,p) strtod((s), (p))
- #else /* }{ */
- #error "numeric float type not defined"
- #endif /* } */
- #define LUA_FLOAT LUA_NUMBER
- /*
- @@ LUA_INTEGER is the integer type used by Lua.
- **
- @@ 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_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
- #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
- #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
- #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
- #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.)
- */
- #if !defined(LUA_USE_C89)
- #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i)
- #else
- #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i))
- #endif
- /*
- @@ lua_strx2number converts an hexadecimal numeric string 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 an hexadecimal numeric string.
- ** 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
- #undef lua_str2number
- #define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
- #define LUA_DEBUG_HOOK lua_debugbreak
- #endif
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