private StkId T_GetTMByObj(ref TValue o, TMS tm)
{
LuaTable mt = null;
switch (o.Tt)
{
case (int)LuaType.LUA_TTABLE:
{
LuaTable tbl = o.HValue();
mt = tbl.MetaTable;
break;
}
case (int)LuaType.LUA_TUSERDATA:
{
LuaUserDataValue ud = o.RawUValue();
mt = ud.MetaTable;
break;
}
default:
{
mt = G.MetaTables[o.Tt];
break;
}
}
return((mt != null)
? mt.GetStr(GetTagMethodName(tm))
: TheNilValue);
}
private StkId T_GetTM( LuaTable mt, TMS tm )
{
if( mt == null )
return null;
var res = mt.GetStr( GetTagMethodName( tm ) );
if(res.V.TtIsNil()) // no tag method?
{
// cache this fact
mt.NoTagMethodFlags |= 1u << (int)tm;
return null;
}
else
return res;
}
private StkId T_GetTM(LuaTable mt, TMS tm)
{
if (mt == null)
{
return(null);
}
StkId res = mt.GetStr(GetTagMethodName(tm));
if (res.V.TtIsNil()) // no tag method?
{
// cache this fact
mt.NoTagMethodFlags |= 1u << (int)tm;
return(null);
}
else
{
return(res);
}
}