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f8df21bd20
lua/luaconf.h
Roberto Ierusalimschy f8df21bd20 `luaconf.h´ exports all its definitions always (so all of them 
must have a lua/LUA prefix).
2005-03-08 17:10:05 -03:00

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/*
** $Id: luaconf.h,v 1.33 2005/03/08 18:09:16 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
#ifndef lconfig_h
#define lconfig_h
#include <limits.h>
#include <stddef.h>
/*
** {======================================================
** Index (search for keyword to find corresponding entry)
** =======================================================
*/
/* }====================================================== */
/*
** {======================================================
** Generic configuration
** =======================================================
*/
/* CONFIG: default path */
#if defined(_WIN32)
#define LUA_ROOT "C:\\Program Files\\Lua51"
#define LUA_LDIR LUA_ROOT "\\lua"
#define LUA_CDIR LUA_ROOT "\\dll"
#define LUA_PATH_DEFAULT \
"?.lua;" LUA_LDIR"\\?.lua;" LUA_LDIR"\\?\\init.lua"
#define LUA_CPATH_DEFAULT \
"?.dll;" "l?.dll;" LUA_CDIR"\\?.dll;" LUA_CDIR"\\l?.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"
#define LUA_CPATH_DEFAULT \
"./?.so;" "./l?.so;" LUA_CDIR"/?.so;" LUA_CDIR"/l?.so"
#endif
/* CONFIG: directory separator (for submodules) */
#if defined(_WIN32)
#define LUA_DIRSEP "\\"
#else
#define LUA_DIRSEP "/"
#endif
/* CONFIG: environment variables that hold the search path for packages */
#define LUA_PATH "LUA_PATH"
#define LUA_CPATH "LUA_CPATH"
/* CONFIG: prefix for open functions in C libraries */
#define LUA_POF "luaopen_"
/* CONFIG: separator for open functions in C libraries */
#define LUA_OFSEP "_"
/* CONFIG: separator of templates in a path */
#define LUA_PATHSEP ';'
/* CONFIG: wild char in each template */
#define LUA_PATH_MARK "?"
/* CONFIG: type of numbers in Lua */
#define LUA_NUMBER double
/* CONFIG: formats for Lua numbers */
#define LUA_NUMBER_SCAN "%lf"
#define LUA_NUMBER_FMT "%.14g"
/*
** CONFIG: type for integer functions
** on most machines, `ptrdiff_t' gives a reasonable size for integers
*/
#define LUA_INTEGER ptrdiff_t
/* CONFIG: mark for all API functions */
#define LUA_API extern
/* CONFIG: mark for auxlib functions */
#define LUALIB_API extern
/* CONFIG: buffer size used by lauxlib buffer system */
#define LUAL_BUFFERSIZE BUFSIZ
/* CONFIG: assertions in Lua (mainly for internal debugging) */
#define lua_assert(c) ((void)0)
/* }====================================================== */
/*
** {======================================================
** Stand-alone configuration
** =======================================================
*/
#ifdef lua_c
/* CONFIG: definition of `isatty' */
#ifdef _POSIX_C_SOURCE
#include <unistd.h>
#define stdin_is_tty() isatty(0)
#elif defined(_WIN32)
#include <io.h>
#include <stdio.h>
#define stdin_is_tty() _isatty(_fileno(stdin))
#else
#define stdin_is_tty() 1 /* assume stdin is a tty */
#endif
#define PROMPT "> "
#define PROMPT2 ">> "
#define PROGNAME "lua"
/*
** CONFIG: this macro can be used by some `history' system to save lines
** read in manual input
*/
#define lua_saveline(L,line) /* empty */
#endif
/* }====================================================== */
/* CONFIG: LUA-C API assertions */
#define luac_apicheck(L,o) lua_assert(o)
/* number of bits in an `int' */
/* avoid overflows in comparison */
#if INT_MAX-20 < 32760
#define LUAC_BITSINT 16
#elif INT_MAX > 2147483640L
/* `int' has at least 32 bits */
#define LUAC_BITSINT 32
#else
#error "you must define LUA_BITSINT with number of bits in an integer"
#endif
/*
** CONFIG:
** LUAC_UINT32: unsigned integer with at least 32 bits
** LUAC_INT32: signed integer with at least 32 bits
** LUAC_UMEM: an unsigned integer big enough to count the total memory
** used by Lua
** LUAC_MEM: a signed integer big enough to count the total memory used by Lua
*/
#if LUAC_BITSINT >= 32
#define LUAC_UINT32 unsigned int
#define LUAC_INT32 int
#define LUAC_MAXINT32 INT_MAX
#define LUAC_UMEM size_t
#define LUAC_MEM ptrdiff_t
#else
/* 16-bit ints */
#define LUAC_UINT32 unsigned long
#define LUAC_INT32 long
#define LUAC_MAXINT32 LONG_MAX
#define LUAC_UMEM LUAC_UINT32
#define LUAC_MEM ptrdiff_t
#endif
/* CONFIG: maximum depth for calls (unsigned short) */
#define LUAC_MAXCALLS 10000
/*
** CONFIG: maximum depth for C calls (unsigned short): Not too big, or may
** overflow the C stack...
*/
#define LUAC_MAXCCALLS 200
/* CONFIG: maximum size for the virtual stack of a C function */
#define LUAC_MAXCSTACK 2048
/*
** CONFIG: maximum number of syntactical nested non-terminals: Not too big,
** or may overflow the C stack...
*/
#define LUAC_MAXPARSERLEVEL 200
/* CONFIG: maximum number of variables declared in a function */
#define LUAC_MAXVARS 200 /* <MAXSTACK */
/* CONFIG: maximum number of upvalues per function */
#define LUAC_MAXUPVALUES 60 /* <MAXSTACK */
/* CONFIG: maximum size of expressions for optimizing `while' code */
#define LUAC_MAXEXPWHILE 100
/* CONFIG: function to convert a lua_Number to int (with any rounding method) */
#if defined(__GNUC__) && defined(__i386)
#define lua_number2int(i,d) __asm__ ("fistpl %0":"=m"(i):"t"(d):"st")
#elif defined(_MSC_VER) && defined(_M_IX86)
#pragma warning(disable: 4514)
__inline int l_lrint (double flt)
{ int i;
_asm {
fld flt
fistp i
};
return i;
}
#define lua_number2int(i,d) ((i)=l_lrint((d)))
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199900L)
/* on machines compliant with C99, you can try `lrint' */
#define lua_number2int(i,d) ((i)=lrint(d))
#else
#define lua_number2int(i,d) ((i)=(int)(d))
#endif
/* CONFIG: function to convert a lua_Number to lua_Integer (with any rounding method) */
#define lua_number2integer(i,n) lua_number2int((i), (n))
/* CONFIG: function to convert a lua_Number to a string */
#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
/* maximum size of previous conversion */
#define LUAC_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
/* CONFIG: function to convert a string to a lua_Number */
#define lua_str2number(s,p) strtod((s), (p))
/* CONFIG: result of a `usual argument conversion' over lua_Number */
#define LUAC_UACNUMBER double
/* CONFIG: primitive operators for numbers */
#define luac_numadd(a,b) ((a)+(b))
#define luac_numsub(a,b) ((a)-(b))
#define luac_nummul(a,b) ((a)*(b))
#define luac_numdiv(a,b) ((a)/(b))
#define luac_numunm(a) (-(a))
#define luac_numeq(a,b) ((a)==(b))
#define luac_numlt(a,b) ((a)<(b))
#define luac_numle(a,b) ((a)<=(b))
#define luac_nummod(a,b) ((a) - floor((a)/(b))*(b))
#define luac_numpow(a,b) pow(a,b)
/* CONFIG: type to ensure maximum alignment */
#define LUAC_USER_ALIGNMENT_T union { double u; void *s; long l; }
/*
** CONFIG: exception handling: by default, Lua handles errors with
** longjmp/setjmp when compiling as C code and with exceptions
** when compiling as C++ code. Change that if you prefer to use
** longjmp/setjmp even with C++.
*/
#ifndef __cplusplus
/* default handling with long jumps */
#define LUAC_THROW(L,c) longjmp((c)->b, 1)
#define LUAC_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
#define luac_jmpbuf jmp_buf
#else
/* C++ exceptions */
#define LUAC_THROW(L,c) throw(c)
#define LUAC_TRY(L,c,a) try { a } catch(...) \
{ if ((c)->status == 0) (c)->status = -1; }
#define luac_jmpbuf int /* dummy variable */
#endif
/*
** CONFIG: macros for thread synchronization inside Lua core
** machine: This is an attempt to simplify the implementation of a
** multithreaded version of Lua. Do not change that unless you know
** what you are doing. all accesses to the global state and to global
** objects are synchronized. Because threads can read the stack of
** other threads (when running garbage collection), a thread must also
** synchronize any write-access to its own stack. Unsynchronized
** accesses are allowed only when reading its own stack, or when reading
** immutable fields from global objects (such as string values and udata
** values).
*/
#define lua_lock(L) ((void) 0)
#define lua_unlock(L) ((void) 0)
/*
** CONFIG: this macro allows a thread switch in appropriate places in
** the Lua core
*/
#define lua_threadyield(L) {lua_unlock(L); lua_lock(L);}
/* CONFIG: allows user-specific initialization on new threads */
#define lua_userstateopen(L) ((void)0)
/* CONFIG: maximum number of captures in pattern-matching (arbitrary limit) */
#define LUA_MAXCAPTURES 32
/*
** CONFIG: by default, gcc does not get `os.tmpname', because it
** generates a warning when using `tmpname'. Change that if you really
** want (or do not want) `os.tmpname' available.
*/
#ifdef __GNUC__
#define LUA_USETMPNAME 0
#else
#define LUA_USETMPNAME 1
#endif
/*
** CONFIG: Configuration for loadlib: Lua tries to guess the
** dynamic-library system that your platform uses (either Windows' DLL,
** Mac's dyld, or dlopen). If your system is some kind of Unix, there is
** a good chance that LUA_USEDLOPEN will work for it. You may need to adapt
** also the makefile.
*/
#if defined(_WIN32)
#define LUA_USEDLL
#elif defined(__APPLE__) && defined(__MACH__)
#define LUA_USEDYLD
#elif defined(__linux) || defined(sun) || defined(sgi) || defined(BSD)
#define LUA_USEDLOPEN
#endif
/* ======================================================= */
/* Local configuration */
#undef LUA_USETMPNAME
#define LUA_USETMPNAME 1
#endif
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