private InterpolationSyntax ParseInterpolation(string text, Lexer.Interpolation interpolation, bool isVerbatim)
        {
            SyntaxToken      openBraceToken;
            ExpressionSyntax expression;
            InterpolationAlignmentClauseSyntax alignment = null;
            InterpolationFormatClauseSyntax    format    = null;
            var closeBraceToken = interpolation.CloseBraceMissing
                ? SyntaxFactory.MissingToken(SyntaxKind.CloseBraceToken)
                : SyntaxFactory.Token(SyntaxKind.CloseBraceToken);

            var parsedText = Substring(text, interpolation.OpenBracePosition, interpolation.HasColon ? interpolation.ColonPosition - 1 : interpolation.CloseBracePosition - 1);

            using (var tempLexer = new Lexer(Text.SourceText.From(parsedText), this.Options, allowPreprocessorDirectives: false, interpolationFollowedByColon: interpolation.HasColon))
            {
                // TODO: some of the trivia in the interpolation maybe should be trailing trivia of the openBraceToken
                using (var tempParser = new LanguageParser(tempLexer, null, null))
                {
                    SyntaxToken      commaToken          = null;
                    ExpressionSyntax alignmentExpression = null;
                    tempParser.ParseInterpolationStart(out openBraceToken, out expression, out commaToken, out alignmentExpression);
                    if (alignmentExpression != null)
                    {
                        alignment = SyntaxFactory.InterpolationAlignmentClause(commaToken, alignmentExpression);
                    }

                    var extraTrivia = tempParser.CurrentToken.GetLeadingTrivia();
                    if (interpolation.HasColon)
                    {
                        var colonToken   = SyntaxFactory.Token(SyntaxKind.ColonToken).TokenWithLeadingTrivia(extraTrivia);
                        var formatText   = Substring(text, interpolation.ColonPosition + 1, interpolation.FormatEndPosition);
                        var formatString = MakeStringToken(formatText, formatText, isVerbatim, SyntaxKind.InterpolatedStringTextToken);
                        format = SyntaxFactory.InterpolationFormatClause(colonToken, formatString);
                    }
                    else
                    {
                        // Move the leading trivia from the insertion's EOF token to the following token.
                        closeBraceToken = closeBraceToken.TokenWithLeadingTrivia(extraTrivia);
                    }
                }
            }

            var result = SyntaxFactory.Interpolation(openBraceToken, expression, alignment, format, closeBraceToken);

            Debug.Assert(Substring(text, interpolation.OpenBracePosition, interpolation.LastPosition) == result.ToFullString()); // yield from text equals yield from node
            return(result);
        }