501 lines
15 KiB
C
501 lines
15 KiB
C
/*
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** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $
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** Configuration file for Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef luaconf_h
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#define luaconf_h
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#include <limits.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "user_config.h"
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/*
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** ===================================================================
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** The NodeMCU Lua environment support 2 compilation targets:
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**
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** * The ESP8266 ans ESP32 embedded runtimes which are compiled using
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** the GCC XTENSA cross-compiler toolchain.
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**
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** * An extend version of the luac build for cross-compiling Lua
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** sources for downloading to the ESP hardware. This is command
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** line only and does not support any interactive dialogue or
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** dynamically loaded libraries.
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**
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** Note that we've removd the "how to fill this in comments so you
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** can now see the actual content more easily. Also the two big
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** boilerplate conditional sections "Configuration for Numbers" and
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** "Dependencies with C99 and other C details" have been moved to
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** the end of the include file to keep the information dense content
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** at the front.
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** ===================================================================
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*/
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#ifdef __XTENSA__
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# define LUA_USE_ESP
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# define LUA_USE_ESP8266
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#else
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# define LUA_USE_HOST
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# define LUA_CROSS_COMPILER
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#endif
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#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
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# define LUA_USE_WINDOWS /* enable goodies for regular Windows */
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//# define LUA_USE_C89 /* We only support the VS2013 C or later */
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#elif defined(__APPLE__)
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# define LUA_USE_MACOSX
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# define LUA_USE_POSIX
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#else
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# define LUA_USE_LINUX
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//# define LUA_USE_POSIX
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#endif
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#define LUA_NODEMCU_NOCLOADERS
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//#define LUA_C89_NUMBERS
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#define LUAI_BITSINT 32
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/* predefined options for LUA_INT_TYPE */
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#define LUA_INT_INT 1
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#define LUA_INT_LONG 2
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#define LUA_INT_LONGLONG 3L
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/* predefined options for LUA_FLOAT_TYPE */
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#define LUA_FLOAT_FLOAT 1
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#define LUA_FLOAT_DOUBLE 2
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#define LUA_FLOAT_LONGDOUBLE 3
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/*
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** default configuration for 64-bit Lua ('long long' and 'double')
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*/
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#if 0
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#if defined(LUA_32BITS)
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/*
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** 32-bit integers and 'float'
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*/
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# define LUA_INT_TYPE LUA_INT_INT
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# define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
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#else
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# define LUA_INT_TYPE LUA_INT_LONGLONG
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# define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
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#endif
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#endif
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#ifdef LUA_NUMBER_64BITS
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# define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
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# define LUA_INT_TYPE LUA_INT_LONGLONG
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#else
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# define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
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# define LUA_INT_TYPE LUA_INT_INT
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#endif
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#ifdef LUA_NUMBER_INTEGRAL
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#error LUA_NUMBER_INTEGRAL is not supported in LUA5.3 builds
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#endif
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/*
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** Configuration for Paths.
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**
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** LUA_CPATH_DEFAULT is the default path that Lua uses to look for
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** Dynamic C libraries are not used and ditto LUA_CPATH_DEFAULT
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*/
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#define LUA_PATH_SEP ";"
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#define LUA_PATH_MARK "?"
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#define LUA_EXEC_DIR "!"
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#define LUA_PATH_DEFAULT "?.lc;?.lua"
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#if defined(_WIN32)
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#define LUA_DIRSEP "\\"
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#else
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#define LUA_DIRSEP "/"
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#endif
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/*
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** {==================================================================
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** Marks for exported symbols in the C code
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** ===================================================================
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**
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@@ LUA_API is a mark for all core API functions.
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@@ LUALIB_API is a mark for all auxiliary library functions.
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@@ LUAMOD_API is a mark for all standard library opening functions.
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*/
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#define LUA_API extern
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#define LUALIB_API LUA_API
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#define LUAMOD_API LUALIB_API
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/*
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@@ LUAI_FUNC, LUAI_DDEF and LUAI_DDEC are used to mark visibilty when
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** building lua as a shared library. Used to tag private inter-module
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** Lua internal functions.
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*/
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//#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
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#define LUAI_FUNC extern
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#define LUAI_DDEC LUAI_FUNC
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#define LUAI_DDEF
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/*
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** {==================================================================
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** Compatibility with previous versions
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** ===================================================================
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*/
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//#define LUA_COMPAT_MATHLIB // retains several deprecated functions in math.
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//#define LUA_COMPAT_BITLIB // bit32 is separately implemented as a NodeMCU lib
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//#define LUA_COMPAT_IPAIRS // enables __ipairs meta which isn't used in NodeMCU
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#define LUA_NODEMCU_COMPAT_MATHLIB /* retains NodeMCU subset of mathlib */
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#define LUA_COMPAT_APIINTCASTS /* needed to enable NodeMCU modules to work on */
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/* both Lua 5.1 and Lua 5.3 */
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#define LUA_COMPAT_UNPACK /* needed to support a global 'unpack' */
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#define LUA_COMPAT_LOADERS /* keeps 'package.loaders' as a synonym for */
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/* 'package.searchers'. Used in our libraries */
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#define LUA_COMPAT_LOADSTRING /* keeps loadstring(s) as synonym for load(s) */
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#if 0
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#define lua_cpcall(L,f,u) \ // Not used in our module code
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(lua_pushcfunction(L, (f)), \
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lua_pushlightuserdata(L,(u)), \
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lua_pcall(L,1,0,0))
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#endif
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//#define LUA_COMPAT_LOG10 // math.log10 not used in NodeMCU
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//#define LUA_COMPAT_MAXN // math.maxn not used
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/* Compatbililty for some API calls withdrawn in Lua53 */
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#define lua_strlen(L,i) lua_rawlen(L, (i))
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#define lua_objlen(L,i) lua_rawlen(L, (i))
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#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
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#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
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// #define LUA_COMPAT_MODULE // drop support for legacy module() format not used in our modules
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/**** May need to revisit this one *****/
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// #define LUA_COMPAT_FLOATSTRING // makes Lua format integral floats without a float mark
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#define LUA_KCONTEXT ptrdiff_t
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#define lua_getlocaledecpoint() '.'
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// #define LUA_NOCVTN2S // enable automatic coercion between
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// #define LUA_NOCVTS2N // strings and numbers
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#if defined(LUA_USE_APICHECK)
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#include <assert.h>
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#define luai_apicheck(l,e) assert(e)
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#endif
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#define LUA_EXTRASPACE (sizeof(void *)) // raw memory area associated with a Lua state
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#define LUAI_MAXSTACK 12000 // Maximum Lua stack size
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#define LUA_IDSIZE 60 // Maximum size for the description of the source
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/*
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@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
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** Change that if you do not want to use C locales. (Code using this
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** macro must include header 'locale.h'.)
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*/
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// of a function in debug information.
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#define LUAL_BUFFERSIZE 256 // NodeMCU setting because of stack limits
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#define LUA_QL(x) "'" x "'" // No longer used in lua53, but still used
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#define LUA_QS LUA_QL("%s") // in some of our apllication modules
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/* =================================================================== */
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/*
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@@ LUA_LOAD_BYTE_FN is used to define macros for reading bytes from
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** object headers. This can be used to speed up architectures which
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** must resort to trap-and-emulate for sub-word memory accesses.
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*/
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#ifdef LUA_USE_ESP
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/*
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** Byte field access macro. On ESP targets this causes the compiler to emit
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** a l32i + extui instruction pair instead of a single l8ui avoiding a call
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** the S/W unaligned exception handler. This is used to force aligned access
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** to commonly accessed fields in Flash-based record structures. It is not
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** needed for RAM-only structures.
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*/
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#define LUA_LOAD_BYTE_FN(fn, type, field) \
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static inline lu_int32 fn(const type *o) { \
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lu_int32 res; /* extract named field */ \
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asm ("l32i %0, %1, %2;" \
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"extui %0, %0, %3, 8;" \
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: "=r"(res) : "r"(o) \
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, "i"((offsetof(type, field)/4)*4) \
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, "i"((offsetof(type, field)%4)*8) \
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: );\
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return res; }
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#endif
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#if !defined(LUA_LOAD_BYTE_FN)
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#define LUA_LOAD_BYTE_FN(fn, type, field) \
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static inline lu_byte fn(const type *o) { return o->field; }
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#endif
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/*
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** {==================================================================
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** Other NodeMCU configuration.
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** ===================================================================
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*/
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#ifdef LUA_USE_ESP
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#define LUAI_USER_ALIGNMENT_T size_t
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#endif
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#define LUAI_GCPAUSE 110 /* 110% (wait memory to grow 10% before next gc) */
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/* }================================================================== */
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/*
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** {==================================================================
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** Configuration for Numbers.
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** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
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** satisfy your needs.
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** ===================================================================
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**
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@@ LUA_NUMBER is the floating-point type used by Lua.
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@@ LUAI_UACNUMBER is the result of a 'default argument promotion' over a floating number.
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@@ l_mathlim(x) corrects limit name 'x' to the proper float type by prefixing it with one of FLT/DBL/LDBL.
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@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
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@@ LUA_NUMBER_FMT is the format for writing floats.
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@@ lua_number2str converts a float to a string.
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@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
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@@ l_floor takes the floor of a float.
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@@ lua_str2number converts a decimal numeric string to a number.
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*/
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/* The following definitions are good for most cases here */
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#define l_floor(x) (l_mathop(floor)(x))
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#define lua_number2str(s,sz,n) \
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l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
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/*
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@@ lua_numbertointeger converts a float number to an integer, or
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** returns 0 if float is not within the range of a lua_Integer.
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** (The range comparisons are tricky because of rounding. The tests
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** here assume a two-complement representation, where MININTEGER always
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** has an exact representation as a float; MAXINTEGER may not have one,
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** and therefore its conversion to float may have an ill-defined value.)
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*/
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#define lua_numbertointeger(n,p) \
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((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
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(n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
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(*(p) = (LUA_INTEGER)(n), 1))
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/* now the variable definitions */
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#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */
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#define LUA_NUMBER float
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#define l_mathlim(n) (FLT_##n)
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#define LUAI_UACNUMBER double
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#define LUA_NUMBER_FRMLEN ""
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#define LUA_NUMBER_FMT "%.7g"
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#define l_mathop(op) op##f
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#define lua_str2number(s,p) strtof((s), (p))
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#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */
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#define LUA_NUMBER long double
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#define l_mathlim(n) (LDBL_##n)
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#define LUAI_UACNUMBER long double
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#define LUA_NUMBER_FRMLEN "L"
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#define LUA_NUMBER_FMT "%.19Lg"
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#define l_mathop(op) op##l
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#define lua_str2number(s,p) strtold((s), (p))
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#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */
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#define LUA_NUMBER double
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#define l_mathlim(n) (DBL_##n)
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#define LUAI_UACNUMBER double
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#define LUA_NUMBER_FRMLEN ""
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#define LUA_NUMBER_FMT "%.14g"
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#define l_mathop(op) op
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#define lua_str2number(s,p) strtod((s), (p))
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#else /* }{ */
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#error "numeric float type not defined"
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#endif /* } */
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#define LUA_FLOAT LUA_NUMBER
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/*
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@@ LUA_INTEGER is the integer type used by Lua.
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**
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@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
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**
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@@ LUAI_UACINT is the result of a 'default argument promotion'
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@@ over a lUA_INTEGER.
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@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
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@@ LUA_INTEGER_FMT is the format for writing integers.
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@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
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@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
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@@ lua_integer2str converts an integer to a string.
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*/
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/* The following definitions are good for most cases here */
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#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
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#define LUAI_UACINT LUA_INTEGER
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#define lua_integer2str(s,sz,n) \
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l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
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/*
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** use LUAI_UACINT here to avoid problems with promotions (which
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** can turn a comparison between unsigneds into a signed comparison)
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*/
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#define LUA_UNSIGNED unsigned LUAI_UACINT
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/* now the variable definitions */
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#if LUA_INT_TYPE == LUA_INT_INT /* { int */
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#define LUA_INTEGER int
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#define LUA_INTEGER_FRMLEN ""
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#define LUA_MAXINTEGER INT_MAX
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#define LUA_MININTEGER INT_MIN
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#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */
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#define LUA_INTEGER long
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#define LUA_INTEGER_FRMLEN "l"
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#define LUA_MAXINTEGER LONG_MAX
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#define LUA_MININTEGER LONG_MIN
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#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */
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/* use presence of macro LLONG_MAX as proxy for C99 compliance */
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#if defined(LLONG_MAX) /* { */
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/* use ISO C99 stuff */
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#define LUA_INTEGER long long
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#define LUA_INTEGER_FRMLEN "ll"
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#define LUA_MAXINTEGER LLONG_MAX
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#define LUA_MININTEGER LLONG_MIN
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#elif defined(LUA_USE_WINDOWS) /* }{ */
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/* in Windows, can use specific Windows types */
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#define LUA_INTEGER __int64
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#define LUA_INTEGER_FRMLEN "I64"
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#define LUA_MAXINTEGER _I64_MAX
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#define LUA_MININTEGER _I64_MIN
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#else /* }{ */
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#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
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or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
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#endif /* } */
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#else /* }{ */
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#error "numeric integer type not defined"
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#endif /* } */
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/* }================================================================== */
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/*
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** {==================================================================
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** Dependencies with C99 and other C details
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** ===================================================================
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*/
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/*
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@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.
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** (All uses in Lua have only one format item.)
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*/
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#if !defined(LUA_USE_C89)
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#define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i)
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#else
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#define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i))
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#endif
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/*
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@@ lua_strx2number converts an hexadecimal numeric string to a number.
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** In C99, 'strtod' does that conversion. Otherwise, you can
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** leave 'lua_strx2number' undefined and Lua will provide its own
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** implementation.
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*/
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#if !defined(LUA_USE_C89)
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#define lua_strx2number(s,p) lua_str2number(s,p)
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#endif
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/*
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@@ lua_pointer2str converts a pointer to a readable string in a
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** non-specified way.
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*/
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#define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p)
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/*
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@@ lua_number2strx converts a float to an hexadecimal numeric string.
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** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
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** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
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** provide its own implementation.
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*/
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#if !defined(LUA_USE_C89)
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#define lua_number2strx(L,b,sz,f,n) \
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((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
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#endif
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/*
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** 'strtof' and 'opf' variants for math functions are not valid in
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** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
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** availability of these variants. ('math.h' is already included in
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** all files that use these macros.)
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*/
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#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
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#undef l_mathop /* variants not available */
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#undef lua_str2number
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#define l_mathop(op) (lua_Number)op /* no variant */
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#define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
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#endif
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#undef lua_str2number
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#define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
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#define LUA_DEBUG_HOOK lua_debugbreak
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#endif
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