128 lines
2.3 KiB
C
128 lines
2.3 KiB
C
/*
|
|
** $Id: llimits.h,v 1.69.1.1 2007/12/27 13:02:25 roberto Exp $
|
|
** Limits, basic types, and some other `installation-dependent' definitions
|
|
** See Copyright Notice in lua.h
|
|
*/
|
|
|
|
#ifndef llimits_h
|
|
#define llimits_h
|
|
|
|
#if 0
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
#endif
|
|
|
|
#include "lua.h"
|
|
|
|
|
|
typedef LUAI_UINT32 lu_int32;
|
|
|
|
typedef LUAI_UMEM lu_mem;
|
|
|
|
typedef LUAI_MEM l_mem;
|
|
|
|
|
|
|
|
/* chars used as small naturals (so that `char' is reserved for characters) */
|
|
typedef unsigned char lu_byte;
|
|
|
|
|
|
#define MAX_SIZET ((size_t)(~(size_t)0)-2)
|
|
|
|
#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)-2)
|
|
|
|
|
|
#define MAX_INT (int)(INT_MAX-2) /* maximum value of an int (-2 for safety) */
|
|
|
|
/*
|
|
** conversion of pointer to integer
|
|
** this is for hashing only; there is no problem if the integer
|
|
** cannot hold the whole pointer value
|
|
*/
|
|
#define IntPoint(p) ((unsigned int)(lu_mem)(p))
|
|
|
|
|
|
|
|
/* type to ensure maximum alignment */
|
|
typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
|
|
|
|
|
|
/* result of a `usual argument conversion' over lua_Number */
|
|
typedef LUAI_UACNUMBER l_uacNumber;
|
|
|
|
|
|
/* internal assertions for in-house debugging */
|
|
#ifdef lua_assert
|
|
|
|
#define check_exp(c,e) (lua_assert(c), (e))
|
|
#define api_check(l,e) lua_assert(e)
|
|
|
|
#else
|
|
|
|
#define lua_assert(c) ((void)0)
|
|
#define check_exp(c,e) (e)
|
|
#define api_check luai_apicheck
|
|
|
|
#endif
|
|
|
|
|
|
#ifndef UNUSED
|
|
#define UNUSED(x) ((void)(x)) /* to avoid warnings */
|
|
#endif
|
|
|
|
|
|
#ifndef cast
|
|
#define cast(t, exp) ((t)(exp))
|
|
#endif
|
|
|
|
#define cast_byte(i) cast(lu_byte, (i))
|
|
#define cast_num(i) cast(lua_Number, (i))
|
|
#define cast_int(i) cast(int, (i))
|
|
|
|
|
|
|
|
/*
|
|
** type for virtual-machine instructions
|
|
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
|
|
*/
|
|
typedef lu_int32 Instruction;
|
|
|
|
|
|
|
|
/* maximum stack for a Lua function */
|
|
#define MAXSTACK 250
|
|
|
|
|
|
|
|
/* minimum size for the string table (must be power of 2) */
|
|
#ifndef MINSTRTABSIZE
|
|
#define MINSTRTABSIZE 32
|
|
#endif
|
|
|
|
|
|
/* minimum size for string buffer */
|
|
#ifndef LUA_MINBUFFER
|
|
#define LUA_MINBUFFER 32
|
|
#endif
|
|
|
|
|
|
#ifndef lua_lock
|
|
#define lua_lock(L) ((void) 0)
|
|
#define lua_unlock(L) ((void) 0)
|
|
#endif
|
|
|
|
#ifndef luai_threadyield
|
|
#define luai_threadyield(L) {lua_unlock(L); lua_lock(L);}
|
|
#endif
|
|
|
|
|
|
/*
|
|
** macro to control inclusion of some hard tests on stack reallocation
|
|
*/
|
|
#ifndef HARDSTACKTESTS
|
|
#define condhardstacktests(x) ((void)0)
|
|
#else
|
|
#define condhardstacktests(x) x
|
|
#endif
|
|
|
|
#endif
|