C:\JS_KRESREAL\HBP_konverzia\lua\ltm.c		C:\JS_LUA\lua-5.2.0\src\ltm.c
	/*		/*
	** $Id: ltm.c,v 2.14 2011/06/02 19:31:40 roberto Exp $		** $Id: ltm.c,v 2.14 2011/06/02 19:31:40 roberto Exp $
	** Tag methods		** Tag methods
	** See Copyright Notice in lua.h		** See Copyright Notice in lua.h
	*/		*/
	#include <string.h>		#include <string.h>
	#define ltm_c		#define ltm_c
	#define LUA_CORE		#define LUA_CORE
	#include "lua.h"		#include "lua.h"
	#include "lobject.h"		#include "lobject.h"
	#include "lstate.h"		#include "lstate.h"
	#include "lstring.h"		#include "lstring.h"
	#include "ltable.h"		#include "ltable.h"
	#include "ltm.h"		#include "ltm.h"
	static const char udatatypename[] = "userdata";		static const char udatatypename[] = "userdata";
	LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {		LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {
	"no value",		"no value",
	"nil", "boolean", udatatypename, "number",		"nil", "boolean", udatatypename, "number",
	"string", "table", "function", udatatypename, "thread",		"string", "table", "function", udatatypename, "thread",
	"proto", "upval"  /* these last two cases are used for tests only */		"proto", "upval"  /* these last two cases are used for tests only */
	};		};
	void luaT_init (lua_State *L) {		void luaT_init (lua_State *L) {
	static const char *const luaT_eventname[] = {  /* ORDER TM */		static const char *const luaT_eventname[] = {  /* ORDER TM */
	"__index", "__newindex",		"__index", "__newindex",
	"__gc", "__mode", "__len", "__eq",		"__gc", "__mode", "__len", "__eq",
	"__add", "__sub", "__mul", "__div", "__mod",		"__add", "__sub", "__mul", "__div", "__mod",
			"__pow", "__unm", "__lt", "__le",
	"__pow",		"__concat", "__call"
	#ifdef GCW_BIT
	"__bit_and", "__bit_or", "__bit_xor", "__bit_lsh", "__bit_rsh",
	"__log_and", "__log_or",
	"__bit_not", "__log_not",
	#endif
	"__unm", "__lt", "__le", "__concat", "__call"
	};		};
	int i;		int i;
	for (i=0; i<TM_N; i++) {		for (i=0; i<TM_N; i++) {
	G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);		G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
	luaS_fix(G(L)->tmname[i]);  /* never collect these names */		luaS_fix(G(L)->tmname[i]);  /* never collect these names */
	}		}
	}		}
	/*		/*
	** function to be used with macro "fasttm": optimized for absence of		** function to be used with macro "fasttm": optimized for absence of
	** tag methods		** tag methods
	*/		*/
	const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {		const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
	const TValue *tm = luaH_getstr(events, ename);		const TValue *tm = luaH_getstr(events, ename);
	lua_assert(event <= TM_EQ);		lua_assert(event <= TM_EQ);
	if (ttisnil(tm)) {  /* no tag method? */		if (ttisnil(tm)) {  /* no tag method? */
	events->flags |= cast_byte(1u<<event);  /* cache this fact */		events->flags |= cast_byte(1u<<event);  /* cache this fact */
	return NULL;		return NULL;
	}		}
	else return tm;		else return tm;
	}		}
	const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {		const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
	Table *mt;		Table *mt;
	switch (ttypenv(o)) {		switch (ttypenv(o)) {
	case LUA_TTABLE:		case LUA_TTABLE:
	mt = hvalue(o)->metatable;		mt = hvalue(o)->metatable;
	break;		break;
	case LUA_TUSERDATA:		case LUA_TUSERDATA:
	mt = uvalue(o)->metatable;		mt = uvalue(o)->metatable;
	break;		break;
	default:		default:
	mt = G(L)->mt[ttypenv(o)];		mt = G(L)->mt[ttypenv(o)];
	}		}
	return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);		return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
	}		}