System.Collections.Queue.Clear C# (CSharp) Method

        public virtual void Clear()
        {
            if (_size != 0)
            {
                if (_head < _tail)
                    Array.Clear(_array, _head, _size);
                else
                {
                    Array.Clear(_array, _head, _array.Length - _head);
                    Array.Clear(_array, 0, _tail);
                }

                _size = 0;
            }

            _head = 0;
            _tail = 0;
            _version++;
        }

            public override void execute3(RunTimeValueBase thisObj,FunctionDefine functionDefine,SLOT returnSlot,SourceToken token,StackFrame stackframe,out bool success)
            {
                System.Collections.Queue queue =
                    (System.Collections.Queue)((LinkObj <object>)((ASBinCode.rtData.rtObjectBase)thisObj).value).value;

                try
                {
                    queue.Clear();
                    returnSlot.setValue(ASBinCode.rtData.rtUndefined.undefined);
                    success = true;
                }
                //catch (KeyNotFoundException)
                //{
                //    success = false;
                //    stackframe.throwAneException(token, arraylist.ToString() + "没有链接到脚本");
                //}
                catch (ArgumentException a)
                {
                    success = false;
                    stackframe.throwAneException(token,a.Message);
                }
                catch (IndexOutOfRangeException i)
                {
                    success = false;
                    stackframe.throwAneException(token,i.Message);
                }
            }