System.Xml.DtdParser.ParseElementOnlyContentNoValidation C# (CSharp) Méthode

        private void ParseElementOnlyContentNoValidation() {
            Stack<ParseElementOnlyContentNoValidation_LocalFrame> localFrames = 
                new Stack<ParseElementOnlyContentNoValidation_LocalFrame>();
            ParseElementOnlyContentNoValidation_LocalFrame currentFrame =
                new ParseElementOnlyContentNoValidation_LocalFrame();
            localFrames.Push(currentFrame);

        RecursiveCall:
            
        Loop:

            switch ( GetToken( false ) ) {
                case Token.QName:
                    GetNameQualified(true);
                    ParseHowManyNoValidation();
                    break;
                case Token.LeftParen:
                    // We could just do this:
                    // ParseElementOnlyContentNoValidation();
                    //
                    // But that would be a recursion - so we will simulate the call using our localFrames stack
                    //   instead.
                    currentFrame =
                        new ParseElementOnlyContentNoValidation_LocalFrame();
                    localFrames.Push(currentFrame);
                    goto RecursiveCall;
                    // And we should return here when we return from the recursion
                    //   but it's the samea s returning after the switch statement

                case Token.GreaterThan:
                    Throw( curPos, SR.Xml_InvalidContentModel );
                    goto Return;
                default:
                    goto UnexpectedError;
            }

        ReturnFromRecursiveCall:

            switch ( GetToken( false ) ) {
                case Token.Comma:
                    if ( currentFrame.parsingSchema == Token.Or ) {
                        Throw( curPos, SR.Xml_InvalidContentModel );
                    }
                    currentFrame.parsingSchema = Token.Comma;
                    break;
                case Token.Or:
                    if ( currentFrame.parsingSchema == Token.Comma ) {
                        Throw( curPos, SR.Xml_InvalidContentModel );
                    }
                    currentFrame.parsingSchema = Token.Or;
                    break;
                case Token.RightParen:
                    ParseHowManyNoValidation();
                    goto Return;
                case Token.GreaterThan:
                    Throw( curPos, SR.Xml_InvalidContentModel );
                    goto Return;
                default:
                    goto UnexpectedError;
            }
            goto Loop;

        UnexpectedError:
            OnUnexpectedError();

        Return:
            // This is equivalent to return; statement
            //   we simulate it using our localFrames stack
            localFrames.Pop();
            if (localFrames.Count > 0) {
                currentFrame = localFrames.Peek();
                goto ReturnFromRecursiveCall;
            }
            else {
                return;
            }
        }