public LuaBindMetatable(LuaState luaState, Type type, LuaBindMetatableType metatableType) : base(luaState)
{
_luaState = luaState;
_type = type;
_metatableType = metatableType;
IntPtr L = luaState.L;
if (luaState.Bindings.MetatableIndexMetamethod == null)
{
LuaLib.luaL_dostring(L, _INDEX_META_METHOD_CODE); // |f
luaState.Bindings.MetatableIndexMetamethod = new LuaFunction(luaState, -1);
LuaLib.lua_pop(L, 1); // |
LuaLib.luaL_dostring(L, _NEWINDEX_META_METHOD_CODE); // |f
luaState.Bindings.MetatableNewIndexMetamethod = new LuaFunction(luaState, -1);
LuaLib.lua_pop(L, 1); // |
}
if (_gcMetamethod == null)
{
_gcMetamethod = new LuaCSFunction(_GC);
_getBaseMetatableMetamethod = new LuaCSFunction(_GetBaseMetatable);
_getMemberMetamethod = new LuaCSFunction(_GetMember);
}
Push(); // |mt
LuaLib.lua_pushstring(L, "__refId"); // |mt|s
LuaLib.lua_pushinteger(L, _RefId); // |mt|s|v
LuaLib.lua_rawset(L, -3); // |mt // mt.__refId = _RefId
LuaLib.lua_pushstring(L, "__index"); // |mt|s
luaState.Bindings.MetatableIndexMetamethod.Push(); // |mt|s|v
LuaLib.lua_rawset(L, -3); // |mt // mt.__index = f
if (!type.IsEnum)
{
LuaLib.lua_pushstring(L, "__newindex"); // |mt|s
luaState.Bindings.MetatableNewIndexMetamethod.Push(); // |mt|s|v
LuaLib.lua_rawset(L, -3); // |mt // mt.__newindex = f
}
LuaLib.lua_pushstring(L, "__gc"); // |mt|s
LuaLib.lua_pushcsfunction(L, _gcMetamethod); // |mt|s|csf
LuaLib.lua_rawset(L, -3); // |mt // mt.__gc = csf
LuaLib.lua_pushstring(L, "__getbase"); // |mt|s
LuaLib.lua_pushcsfunction(L, _getBaseMetatableMetamethod); // |mt|s|csf
LuaLib.lua_rawset(L, -3); // |mt // mt.__getbase = csf
LuaLib.lua_pushstring(L, "__getmember"); // |mt|s
LuaLib.lua_pushcsfunction(L, _getMemberMetamethod); // |mt|s|csf
LuaLib.lua_rawset(L, -3); // |mt // mt.__getmember = csf
LuaLib.lua_pop(L, 1); // |
luaState.Bindings.RegisterMetatableRefId(_RefId, this);
}
public LuaBindMetatable GetMetatable(Type type, LuaBindMetatableType metatableType)
{
LuaBindMetatable metatable;
var metatables = _metatables[(int)metatableType];
if (!metatables.TryGetValue(type, out metatable))
{
metatable = new LuaBindMetatable(_luaState, type, metatableType);
metatables[type] = metatable;
}
return(metatable);
}
