private static bool TryGetAction(SyntaxNode syntaxNode, SyntaxNode root, RedundantDeclaration.RedundancyType diagnosticType,
Document document, out CodeAction action)
{
switch (diagnosticType)
{
case RedundantDeclaration.RedundancyType.LambdaParameterType:
return TryGetRedundantLambdaParameterAction(syntaxNode, root, document, out action);
case RedundantDeclaration.RedundancyType.ArraySize:
return TryGetRedundantArraySizeAction(syntaxNode, root, document, out action);
case RedundantDeclaration.RedundancyType.ArrayType:
return TryGetRedundantArrayTypeAction(syntaxNode, root, document, out action);
case RedundantDeclaration.RedundancyType.ExplicitDelegate:
case RedundantDeclaration.RedundancyType.ExplicitNullable:
return TryGetRedundantExplicitObjectCreationAction(syntaxNode, root, document, diagnosticType, out action);
case RedundantDeclaration.RedundancyType.ObjectInitializer:
return TryGetRedundantObjectInitializerAction(syntaxNode, root, document, out action);
case RedundantDeclaration.RedundancyType.DelegateParameterList:
return TryGetRedundantParameterTypeAction(syntaxNode, root, document, out action);
default:
throw new NotSupportedException();
}
}
private static bool TryGetRedundantExplicitObjectCreationAction(SyntaxNode syntaxNode, SyntaxNode root,
Document document, RedundantDeclaration.RedundancyType diagnosticType, out CodeAction action)
{
var title = diagnosticType == RedundantDeclaration.RedundancyType.ExplicitDelegate
? TitleRedundantExplicitDelegate
: TitleRedundantExplicitNullable;
var objectCreation = syntaxNode as ObjectCreationExpressionSyntax;
if (objectCreation == null)
{
action = null;
return false;
}
var newExpression = objectCreation.ArgumentList?.Arguments.FirstOrDefault()?.Expression;
if (newExpression == null)
{
action = null;
return false;
}
action = CodeAction.Create(title, c =>
{
newExpression = newExpression.WithTriviaFrom(objectCreation);
var newRoot = root.ReplaceNode(objectCreation, newExpression);
return Task.FromResult(document.WithSyntaxRoot(newRoot));
}, title);
return true;
}
