Method getTypeId

Assets/XLua/Src/ObjectTranslator.cs:1009–1083

(RealStatePtr L, Type type, out bool is_first)

        public int getTypeId(RealStatePtr L, Type type, out bool is_first)
        {
            int type_id;
            is_first = false;
            if (!typeIdMap.TryGetValue(type, out type_id)) // no reference
            {
                if (type.IsArray)
                {
                    if (common_array_meta == -1) throw new Exception("Fatal Exception! Array Metatable not inited!");
                    return common_array_meta;
                }
                if (typeof(MulticastDelegate).IsAssignableFrom(type))
                {
                    if (common_delegate_meta == -1) throw new Exception("Fatal Exception! Delegate Metatable not inited!");
                    TryDelayWrapLoader(L, type);
                    return common_delegate_meta;
                }

                is_first = true;
                Type alias_type = null;
                aliasCfg.TryGetValue(type, out alias_type);
                LuaAPI.luaL_getmetatable(L, alias_type == null ? type.FullName : alias_type.FullName);

                if (LuaAPI.lua_isnil(L, -1)) //no meta yet, try to use reflection meta
                {
                    LuaAPI.lua_pop(L, 1);

                    if (TryDelayWrapLoader(L, alias_type == null ? type : alias_type))
                    {
                        LuaAPI.luaL_getmetatable(L, alias_type == null ? type.FullName : alias_type.FullName);
                    }
                    else
                    {
                        throw new Exception("Fatal: can not load metatable of type:" + type);
                    }
                }

                //循环依赖，自身依赖自己的class，比如有个自身类型的静态readonly对象。
                if (typeIdMap.TryGetValue(type, out type_id))
                {
                    LuaAPI.lua_pop(L, 1);
                }
                else
                {
                    if (type.IsEnum())
                    {
                        LuaAPI.xlua_pushasciistring(L, "__band");
                        LuaAPI.lua_pushstdcallcfunction(L, metaFunctions.EnumAndMeta);
                        LuaAPI.lua_rawset(L, -3);
                        LuaAPI.xlua_pushasciistring(L, "__bor");
                        LuaAPI.lua_pushstdcallcfunction(L, metaFunctions.EnumOrMeta);
                        LuaAPI.lua_rawset(L, -3);
                    }
                    if (typeof(IEnumerable).IsAssignableFrom(type))
                    {
                        LuaAPI.xlua_pushasciistring(L, "__pairs");
                        LuaAPI.lua_getref(L, enumerable_pairs_func);
                        LuaAPI.lua_rawset(L, -3);