LuaInterface.ObjectTranslator.getAsType C# (CSharp) Method

        internal object getAsType(IntPtr luaState,int stackPos,Type paramType)
        {
            ExtractValue extractor=typeChecker.checkType(luaState,stackPos,paramType);
            if(extractor!=null) return extractor(luaState,stackPos);
            return null;
        }

        public static int setFieldOrProperty(IntPtr luaState)
        {
            ObjectTranslator objectTranslator = ObjectTranslator.FromState(luaState);
            object           rawNetObject     = objectTranslator.getRawNetObject(luaState, 1);

            if (rawNetObject == null)
            {
                objectTranslator.throwError(luaState, "trying to index and invalid object reference");
                return(0);
            }
            Type   type = rawNetObject.GetType();
            string message;
            bool   flag = objectTranslator.metaFunctions.trySetMember(luaState, type, rawNetObject, BindingFlags.IgnoreCase | BindingFlags.Instance, out message);

            if (flag)
            {
                return(0);
            }
            try
            {
                if (type.IsArray && LuaDLL.lua_isnumber(luaState, 2))
                {
                    int    index  = (int)LuaDLL.lua_tonumber(luaState, 2);
                    Array  array  = (Array)rawNetObject;
                    object asType = objectTranslator.getAsType(luaState, 3, array.GetType().GetElementType());
                    array.SetValue(asType, index);
                }
                else
                {
                    MethodInfo method = type.GetMethod("set_Item");
                    if (method != null)
                    {
                        ParameterInfo[] parameters     = method.GetParameters();
                        Type            parameterType  = parameters[1].ParameterType;
                        object          asType2        = objectTranslator.getAsType(luaState, 3, parameterType);
                        Type            parameterType2 = parameters[0].ParameterType;
                        object          asType3        = objectTranslator.getAsType(luaState, 2, parameterType2);
                        method.Invoke(rawNetObject, new object[]
                        {
                            asType3,
                            asType2
                        });
                    }
                    else
                    {
                        objectTranslator.throwError(luaState, message);
                    }
                }
            }
            catch (SEHException)
            {
                throw;
            }
            catch (Exception e)
            {
                objectTranslator.metaFunctions.ThrowError(luaState, e);
            }
            return(0);
        }