private static async Task <Document> CreateInterpolatedStringAsync(
Document document,
InvocationExpressionSyntax invocation,
CancellationToken cancellationToken = default(CancellationToken))
{
SeparatedSyntaxList <ArgumentSyntax> arguments = invocation.ArgumentList.Arguments;
SemanticModel semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
ImmutableArray <ExpressionSyntax> expandedArguments = ImmutableArray.CreateRange(GetExpandedArguments(arguments, semanticModel));
string formatText = ((LiteralExpressionSyntax)arguments[0].Expression).Token.ToString();
var interpolatedString = (InterpolatedStringExpressionSyntax)ParseExpression("$" + formatText);
var rewriter = new InterpolatedStringSyntaxRewriter(expandedArguments);
var newInterpolatedString = (InterpolatedStringExpressionSyntax)rewriter.Visit(interpolatedString);
SyntaxNode root = await document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
SyntaxNode newRoot = root.ReplaceNode(invocation, newInterpolatedString);
return(document.WithSyntaxRoot(newRoot));
}
private static Task <Document> RefactorAsync(
Document document,
InvocationExpressionSyntax invocation,
SemanticModel semanticModel,
CancellationToken cancellationToken = default(CancellationToken))
{
SeparatedSyntaxList <ArgumentSyntax> arguments = invocation.ArgumentList.Arguments;
var formatExpression = (LiteralExpressionSyntax)arguments[0].Expression;
string formatText = formatExpression.Token.Text;
bool isVerbatim = formatText.StartsWith("@", StringComparison.Ordinal);
string text = "$" + formatText;
var interpolatedString = (InterpolatedStringExpressionSyntax)ParseExpression(text);
if (CanReplaceInterpolationWithStringLiteralInnerText(arguments, isVerbatim))
{
interpolatedString = ReplaceInterpolationWithStringLiteralInnerText(arguments, interpolatedString, text);
}
IEnumerable <ExpressionSyntax> interpolationExpressions = GetInterpolationExpressions(arguments, semanticModel, cancellationToken);
var rewriter = new InterpolatedStringSyntaxRewriter(interpolationExpressions);
var newNode = (InterpolatedStringExpressionSyntax)rewriter.Visit(interpolatedString);
newNode = newNode
.WithTriviaFrom(invocation)
.WithFormatterAnnotation();
return(document.ReplaceNodeAsync(invocation, newNode, cancellationToken));
}