add SkLuaCanvas

third_party/lua/src/luaconf.h

Index: third_party/lua/src/luaconf.h
diff --git a/third_party/lua/src/luaconf.h b/third_party/lua/src/luaconf.h
new file mode 100644
index 0000000000000000000000000000000000000000..df802c9526fa8c8be48c0258356c3b5d5cd8a96d
--- /dev/null
+++ b/third_party/lua/src/luaconf.h
@@ -0,0 +1,551 @@
+/*
+** $Id: luaconf.h,v 1.176 2013/03/16 21:10:18 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(LUA_ANSI) && defined(__STRICT_ANSI__)
+#define LUA_ANSI
+#endif
+
+
+#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
+#define LUA_WIN		/* enable goodies for regular Windows platforms */
+#endif
+
+#if defined(LUA_WIN)
+#define LUA_DL_DLL
+#define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
+#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 */
+#define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
+#define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
+#define LUA_USE_LONGLONG	/* assume support for long long */
+#endif
+
+#if defined(LUA_USE_MACOSX)
+#define LUA_USE_POSIX
+#define LUA_USE_DLOPEN		/* does not need -ldl */
+#define LUA_USE_READLINE	/* needs an extra library: -lreadline */
+#define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
+#define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
+#define LUA_USE_LONGLONG	/* assume support for long long */
+#endif
+
+
+
+/*
+@@ LUA_USE_POSIX includes all functionality 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
+#define LUA_USE_GMTIME_R
+#endif
+
+
+
+/*
+@@ 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_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
+		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" ".\\?.lua"
+#define LUA_CPATH_DEFAULT \
+		LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll"
+
+#else			/* }{ */
+
+#define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
+#define LUA_ROOT	"/usr/local/"
+#define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR
+#define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR
+#define LUA_PATH_DEFAULT  \
+		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
+		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" "./?.lua"
+#define LUA_CPATH_DEFAULT \
+		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.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_ENV is the name of the variable that holds the current
+@@ environment, used to access global names.
+** CHANGE it if you do not like this name.
+*/
+#define LUA_ENV		"_ENV"
+
+
+/*
+@@ 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
+#define LUAMOD_API	LUALIB_API
+
+
+/*
+@@ LUAI_FUNC is a mark for all extern functions that are not to be
+@* exported to outside modules.
+@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
+@* that are not to be exported to outside modules (LUAI_DDEF for
+@* definitions and LUAI_DDEC for declarations).
+** 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. Not all elf targets support
+** this attribute. Unfortunately, gcc does not offer a way to check
+** whether the target offers that support, and those without support
+** give a warning about it. To avoid these warnings, change to the
+** default definition.
+*/
+#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
+    defined(__ELF__)		/* { */
+#define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
+#define LUAI_DDEC	LUAI_FUNC
+#define LUAI_DDEF	/* empty */
+
+#else				/* }{ */
+#define LUAI_FUNC	extern
+#define LUAI_DDEC	extern
+#define LUAI_DDEF	/* empty */
+#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
+
+
+/*
+@@ luai_writestring/luai_writeline define how 'print' prints its results.
+** They are only used in libraries and the stand-alone program. (The #if
+** avoids including 'stdio.h' everywhere.)
+*/
+#if defined(LUA_LIB) || defined(lua_c)
+#include <stdio.h>
+#define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
+#define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))
+#endif
+
+/*
+@@ luai_writestringerror defines how to print error messages.
+** (A format string with one argument is enough for Lua...)
+*/
+#define luai_writestringerror(s,p) \
+	(fprintf(stderr, (s), (p)), fflush(stderr))
+
+
+/*
+@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
+** strings that are internalized. (Cannot be smaller than reserved words
+** or tags for metamethods, as these strings must be internalized;
+** #("function") = 8, #("__newindex") = 10.)
+*/
+#define LUAI_MAXSHORTLEN        40
+
+
+
+/*
+** {==================================================================
+** Compatibility with previous versions
+** ===================================================================
+*/
+
+/*
+@@ LUA_COMPAT_ALL controls all compatibility options.
+** You can define it to get all options, or change specific options
+** to fit your specific needs.
+*/
+#if defined(LUA_COMPAT_ALL)	/* { */
+
+/*
+@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
+** You can replace it with 'table.unpack'.
+*/
+#define LUA_COMPAT_UNPACK
+
+/*
+@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
+** You can replace it with 'package.searchers'.
+*/
+#define LUA_COMPAT_LOADERS
+
+/*
+@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
+** You can call your C function directly (with light C functions).
+*/
+#define lua_cpcall(L,f,u)  \
+	(lua_pushcfunction(L, (f)), \
+	 lua_pushlightuserdata(L,(u)), \
+	 lua_pcall(L,1,0,0))
+
+
+/*
+@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
+** You can rewrite 'log10(x)' as 'log(x, 10)'.
+*/
+#define LUA_COMPAT_LOG10
+
+/*
+@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
+** library. You can rewrite 'loadstring(s)' as 'load(s)'.
+*/
+#define LUA_COMPAT_LOADSTRING
+
+/*
+@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
+*/
+#define LUA_COMPAT_MAXN
+
+/*
+@@ 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.
+*/
+#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)
+
+/*
+@@ LUA_COMPAT_MODULE controls compatibility with previous
+** module functions 'module' (Lua) and 'luaL_register' (C).
+*/
+#define LUA_COMPAT_MODULE
+
+#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				/* } */
+
+
+/*
+@@ LUA_INT32 is an signed integer with exactly 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. Probably you do not need to change
+** this.
+*/
+#if LUAI_BITSINT >= 32		/* { */
+#define LUA_INT32	int
+#define LUAI_UMEM	size_t
+#define LUAI_MEM	ptrdiff_t
+#else				/* }{ */
+/* 16-bit ints */
+#define LUA_INT32	long
+#define LUAI_UMEM	unsigned long
+#define LUAI_MEM	long
+#endif				/* } */
+
+
+/*
+@@ LUAI_MAXSTACK limits the size of the Lua stack.
+** CHANGE it if you need a different limit. This limit is arbitrary;
+** its only purpose is to stop Lua to consume unlimited stack
+** space (and to reserve some numbers for pseudo-indices).
+*/
+#if LUAI_BITSINT >= 32
+#define LUAI_MAXSTACK		1000000
+#else
+#define LUAI_MAXSTACK		15000
+#endif
+
+/* reserve some space for error handling */
+#define LUAI_FIRSTPSEUDOIDX	(-LUAI_MAXSTACK - 1000)
+
+
+
+
+/*
+@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
+** CHANGE it if it uses too much C-stack space.
+*/
+#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.
+*/
+#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 */
+
+
+/*
+@@ l_mathop allows the addition of an 'l' or 'f' to all math operations
+*/
+#define l_mathop(x)		(x)
+
+
+/*
+@@ lua_str2number converts a decimal numeric string to a number.
+@@ lua_strx2number converts an hexadecimal numeric string to a number.
+** In C99, 'strtod' does both conversions. C89, however, has no function
+** to convert floating hexadecimal strings to numbers. For these
+** systems, you can leave 'lua_strx2number' undefined and Lua will
+** provide its own implementation.
+*/
+#define lua_str2number(s,p)	strtod((s), (p))
+
+#if defined(LUA_USE_STRTODHEX)
+#define lua_strx2number(s,p)	strtod((s), (p))
+#endif
+
+
+/*
+@@ The luai_num* macros define the primitive operations over numbers.
+*/
+
+/* the following operations need the math library */
+#if defined(lobject_c) || defined(lvm_c)
+#include <math.h>
+#define luai_nummod(L,a,b)	((a) - l_mathop(floor)((a)/(b))*(b))
+#define luai_numpow(L,a,b)	(l_mathop(pow)(a,b))
+#endif
+
+/* these are quite standard operations */
+#if defined(LUA_CORE)
+#define luai_numadd(L,a,b)	((a)+(b))
+#define luai_numsub(L,a,b)	((a)-(b))
+#define luai_nummul(L,a,b)	((a)*(b))
+#define luai_numdiv(L,a,b)	((a)/(b))
+#define luai_numunm(L,a)	(-(a))
+#define luai_numeq(a,b)		((a)==(b))
+#define luai_numlt(L,a,b)	((a)<(b))
+#define luai_numle(L,a,b)	((a)<=(b))
+#define luai_numisnan(L,a)	(!luai_numeq((a), (a)))
+#endif
+
+
+
+/*
+@@ 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_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned.
+** It must have at least 32 bits.
+*/
+#define LUA_UNSIGNED	unsigned LUA_INT32
+
+
+
+/*
+** Some tricks with doubles
+*/
+
+#if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI)	/* { */
+/*
+** The next definitions activate some tricks to speed up the
+** conversion from doubles to integer types, mainly to LUA_UNSIGNED.
+**
+@@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a
+** DirectX idiosyncrasy.
+**
+@@ LUA_IEEE754TRICK uses a trick that should work on any machine
+** using IEEE754 with a 32-bit integer type.
+**
+@@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be
+** defined when LUA_INTEGER is a 32-bit integer.
+**
+@@ LUA_IEEEENDIAN is the endianness of doubles in your machine
+** (0 for little endian, 1 for big endian); if not defined, Lua will
+** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK).
+**
+@@ LUA_NANTRICK controls the use of a trick to pack all types into
+** a single double value, using NaN values to represent non-number
+** values. The trick only works on 32-bit machines (ints and pointers
+** are 32-bit values) with numbers represented as IEEE 754-2008 doubles
+** with conventional endianess (12345678 or 87654321), in CPUs that do
+** not produce signaling NaN values (all NaNs are quiet).
+*/
+
+/* Microsoft compiler on a Pentium (32 bit) ? */
+#if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86)	/* { */
+
+#define LUA_MSASMTRICK
+#define LUA_IEEEENDIAN		0
+#define LUA_NANTRICK
+
+
+/* pentium 32 bits? */
+#elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */
+
+#define LUA_IEEE754TRICK
+#define LUA_IEEELL
+#define LUA_IEEEENDIAN		0
+#define LUA_NANTRICK
+
+/* pentium 64 bits? */
+#elif defined(__x86_64)						/* }{ */
+
+#define LUA_IEEE754TRICK
+#define LUA_IEEEENDIAN		0
+
+#elif defined(__POWERPC__) || defined(__ppc__)			/* }{ */
+
+#define LUA_IEEE754TRICK
+#define LUA_IEEEENDIAN		1
+
+#else								/* }{ */
+
+/* assume IEEE754 and a 32-bit integer type */
+#define LUA_IEEE754TRICK
+
+#endif								/* } */
+
+#endif							/* } */
+
+/* }================================================================== */
+
+
+
+
+/* =================================================================== */
+
+/*
+** Local configuration. You can use this space to add your redefinitions
+** without modifying the main part of the file.
+*/
+
+
+
+#endif
+