internal static bool CanSimplifyTupleElementName(ArgumentSyntax node, CSharpParseOptions parseOptions)
{
// Tuple elements are arguments in a tuple expression
if (node.NameColon == null || !node.IsParentKind(SyntaxKind.TupleExpression))
{
return(false);
}
if (parseOptions.LanguageVersion < LanguageVersion.CSharp7_1)
{
return(false);
}
if (RemovalCausesAmbiguity(((TupleExpressionSyntax)node.Parent).Arguments, node))
{
return(false);
}
var inferredName = node.Expression.TryGetInferredMemberName();
if (inferredName == null || inferredName != node.NameColon.Name.Identifier.ValueText)
{
return(false);
}
return(true);
}
private bool IsPassedToDelegateCreationExpression(ArgumentSyntax argument, ITypeSymbol type)
{
if (type.IsDelegateType() &&
argument.IsParentKind(SyntaxKind.ArgumentList) &&
argument.Parent.IsParentKind(SyntaxKind.ObjectCreationExpression))
{
var objectCreationExpression = (ObjectCreationExpressionSyntax)argument.Parent.Parent;
var objectCreationType = _semanticModel.GetTypeInfo(objectCreationExpression).Type;
if (objectCreationType.Equals(type))
{
return(true);
}
}
return(false);
}
private static ArgumentSyntax SimplifyTupleName(ArgumentSyntax node, SemanticModel semanticModel, OptionSet optionSet, CancellationToken cancellationToken)
{
// Tuple elements are arguments in a tuple expression
if (node.NameColon == null || !node.IsParentKind(SyntaxKind.TupleExpression))
{
return(node);
}
var inferredName = node.Expression.TryGetInferredMemberName();
if (inferredName == null || inferredName != node.NameColon.Name.Identifier.ValueText)
{
return(node);
}
return(node.WithNameColon(null).WithTriviaFrom(node));
}
