System.Xml.XsdValidatingReader.ReadAsync C# (CSharp) Method

        public override Task<bool> ReadAsync()
        {
            switch (_validationState)
            {
                case ValidatingReaderState.Read:
                    Task<bool> readTask = _coreReader.ReadAsync();
                    return ReadAsync_Read(readTask);

                case ValidatingReaderState.ParseInlineSchema:
                    return ProcessInlineSchemaAsync().ReturnTrueTaskWhenFinishAsync();

                case ValidatingReaderState.OnAttribute:
                case ValidatingReaderState.OnDefaultAttribute:
                case ValidatingReaderState.ClearAttributes:
                case ValidatingReaderState.OnReadAttributeValue:
                    ClearAttributesInfo();
                    if (_inlineSchemaParser != null)
                    {
                        _validationState = ValidatingReaderState.ParseInlineSchema;
                        goto case ValidatingReaderState.ParseInlineSchema;
                    }
                    else
                    {
                        _validationState = ValidatingReaderState.Read;
                        goto case ValidatingReaderState.Read;
                    }

                case ValidatingReaderState.ReadAhead: //Will enter here on calling Skip() 
                    ClearAttributesInfo();
                    Task task = ProcessReaderEventAsync();
                    return ReadAsync_ReadAhead(task);

                case ValidatingReaderState.OnReadBinaryContent:
                    _validationState = _savedState;
                    return _readBinaryHelper.FinishAsync().CallBoolTaskFuncWhenFinishAsync(thisRef => thisRef.ReadAsync(), this);

                case ValidatingReaderState.Init:
                    _validationState = ValidatingReaderState.Read;
                    if (_coreReader.ReadState == ReadState.Interactive)
                    { //If the underlying reader is already positioned on a ndoe, process it
                        return ProcessReaderEventAsync().ReturnTrueTaskWhenFinishAsync();
                    }
                    else
                    {
                        goto case ValidatingReaderState.Read;
                    }

                case ValidatingReaderState.ReaderClosed:
                case ValidatingReaderState.EOF:
                    return AsyncHelper.DoneTaskFalse;

                default:
                    return AsyncHelper.DoneTaskFalse;
            }
        }