private async Task <ConstructorDeclarationSyntax> DocumentConstructorAsync(CodeFixContext context, ConstructorDeclarationSyntax constructor, CancellationToken cancellationToken)
{
if (constructor == null)
{
return(null);
}
SemanticModel semanticModel = await context.Document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
INamedTypeSymbol apiCallClass = semanticModel.GetDeclaredSymbol(constructor.FirstAncestorOrSelf <ClassDeclarationSyntax>(), cancellationToken);
string parameterName = constructor.ParameterList.Parameters[0].Identifier.ValueText;
DocumentationCommentTriviaSyntax documentationComment = XmlSyntaxFactory.DocumentationComment(
XmlSyntaxFactory.SummaryElement(
XmlSyntaxFactory.Text("Initializes a new instance of the "),
XmlSyntaxFactory.SeeElement(SyntaxFactory.TypeCref(SyntaxFactory.ParseTypeName(apiCallClass.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)))),
XmlSyntaxFactory.Text(" class"),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.Text("with the behavior provided by another "),
XmlSyntaxFactory.SeeElement(SyntaxFactory.TypeCref(SyntaxFactory.ParseTypeName("global::OpenStack.Net.IHttpApiCall<T>"))),
XmlSyntaxFactory.Text(" instance.")),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.ParamElement(
parameterName,
XmlSyntaxFactory.List(
XmlSyntaxFactory.Text("The "),
XmlSyntaxFactory.SeeElement(SyntaxFactory.TypeCref(SyntaxFactory.ParseTypeName("global::OpenStack.Net.IHttpApiCall<T>"))),
XmlSyntaxFactory.Text(" providing the behavior for the API call."))),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.ExceptionElement(
SyntaxFactory.TypeCref(SyntaxFactory.ParseTypeName("global::System.ArgumentNullException")),
XmlSyntaxFactory.List(
XmlSyntaxFactory.Text("If "),
XmlSyntaxFactory.ParamRefElement(parameterName),
XmlSyntaxFactory.Text(" is "),
XmlSyntaxFactory.NullKeywordElement(),
XmlSyntaxFactory.Text("."))))
.WithAdditionalAnnotations(Simplifier.Annotation);
SyntaxTrivia documentationTrivia = SyntaxFactory.Trivia(documentationComment);
return(constructor.WithLeadingTrivia(constructor.GetLeadingTrivia().Add(documentationTrivia)));
}
private async Task <Document> CreateChangedDocument(CodeFixContext context, PropertyDeclarationSyntax propertyDeclarationSyntax, CancellationToken cancellationToken)
{
DocumentationCommentTriviaSyntax documentationComment = propertyDeclarationSyntax.GetDocumentationCommentTriviaSyntax();
if (documentationComment == null)
{
return(context.Document);
}
XmlElementSyntax summaryElement = (XmlElementSyntax)documentationComment.Content.GetFirstXmlElement("summary");
if (summaryElement == null)
{
return(context.Document);
}
SyntaxList <XmlNodeSyntax> summaryContent = summaryElement.Content;
XmlNodeSyntax firstContent = summaryContent.FirstOrDefault(IsContentElement);
XmlTextSyntax firstText = firstContent as XmlTextSyntax;
if (firstText != null)
{
string firstTextContent = string.Concat(firstText.DescendantTokens());
if (firstTextContent.TrimStart().StartsWith("Gets ", StringComparison.Ordinal))
{
// Find the token containing "Gets "
SyntaxToken getsToken = default(SyntaxToken);
foreach (SyntaxToken textToken in firstText.TextTokens)
{
if (textToken.IsMissing)
{
continue;
}
if (!textToken.Text.TrimStart().StartsWith("Gets ", StringComparison.Ordinal))
{
continue;
}
getsToken = textToken;
break;
}
if (!getsToken.IsMissing)
{
string text = getsToken.Text;
string valueText = getsToken.ValueText;
int index = text.IndexOf("Gets ");
if (index >= 0)
{
bool additionalCharacters = index + 5 < text.Length;
text = text.Substring(0, index)
+ (additionalCharacters ? char.ToUpperInvariant(text[index + 5]).ToString() : string.Empty)
+ text.Substring(index + (additionalCharacters ? (5 + 1) : 5));
}
index = valueText.IndexOf("Gets ");
if (index >= 0)
{
valueText = valueText.Remove(index, 5);
}
SyntaxToken replaced = SyntaxFactory.Token(getsToken.LeadingTrivia, getsToken.Kind(), text, valueText, getsToken.TrailingTrivia);
summaryContent = summaryContent.Replace(firstText, firstText.ReplaceToken(getsToken, replaced));
}
}
}
string defaultValueToken = "NullIfNotIncluded";
SemanticModel semanticModel = await context.Document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
IPropertySymbol propertySymbol = semanticModel.GetDeclaredSymbol(propertyDeclarationSyntax);
if (propertySymbol != null)
{
ITypeSymbol propertyType = propertySymbol.Type;
if (propertyType.IsImmutableArray())
{
defaultValueToken = "DefaultArrayIfNotIncluded";
}
}
XmlElementSyntax valueElement =
XmlSyntaxFactory.MultiLineElement(
"value",
XmlSyntaxFactory.List(
XmlSyntaxFactory.ParaElement(XmlSyntaxFactory.PlaceholderElement(summaryContent.WithoutFirstAndLastNewlines())),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.TokenElement(defaultValueToken)));
XmlNodeSyntax leadingNewLine = XmlSyntaxFactory.NewLine();
// HACK: The formatter isn't working when contents are added to an existing documentation comment, so we
// manually apply the indentation from the last line of the existing comment to each new line of the
// generated content.
SyntaxTrivia exteriorTrivia = GetLastDocumentationCommentExteriorTrivia(documentationComment);
if (!exteriorTrivia.Token.IsMissing)
{
leadingNewLine = leadingNewLine.ReplaceExteriorTrivia(exteriorTrivia);
valueElement = valueElement.ReplaceExteriorTrivia(exteriorTrivia);
}
DocumentationCommentTriviaSyntax newDocumentationComment = documentationComment.WithContent(
documentationComment.Content.InsertRange(documentationComment.Content.Count - 1,
XmlSyntaxFactory.List(
leadingNewLine,
valueElement)));
SyntaxNode root = await context.Document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
SyntaxNode newRoot = root.ReplaceNode(documentationComment, newDocumentationComment);
return(context.Document.WithSyntaxRoot(newRoot));
}
private async Task <Document> CreateChangedDocument(CodeFixContext context, ClassDeclarationSyntax classDeclarationSyntax, CancellationToken cancellationToken)
{
string serviceInterfaceName = "IUnknownService";
string serviceExtensionsClassName = "UnknownServiceExtensions";
INamedTypeSymbol serviceInterface = await GetServiceInterfaceAsync(context, classDeclarationSyntax, cancellationToken).ConfigureAwait(false);
if (serviceInterface != null)
{
serviceInterfaceName = serviceInterface.MetadataName;
serviceExtensionsClassName = serviceInterfaceName + "Extensions";
if (serviceInterfaceName.StartsWith("I"))
{
serviceExtensionsClassName = serviceExtensionsClassName.Substring(1);
}
}
string fullServiceName = "Unknown Service";
if (serviceInterface != null)
{
fullServiceName = ExtractFullServiceName(serviceInterface);
}
string callName = classDeclarationSyntax.Identifier.ValueText;
int apiCallSuffix = callName.IndexOf("ApiCall", StringComparison.Ordinal);
if (apiCallSuffix > 0)
{
callName = callName.Substring(0, apiCallSuffix);
}
ClassDeclarationSyntax newClassDeclaration = classDeclarationSyntax;
ConstructorDeclarationSyntax constructor = await FindApiCallConstructorAsync(context, classDeclarationSyntax, cancellationToken).ConfigureAwait(false);
ConstructorDeclarationSyntax newConstructor = await DocumentConstructorAsync(context, constructor, cancellationToken).ConfigureAwait(false);
if (newConstructor != null)
{
newClassDeclaration = newClassDeclaration.ReplaceNode(constructor, newConstructor);
}
DocumentationCommentTriviaSyntax documentationComment = XmlSyntaxFactory.DocumentationComment(
XmlSyntaxFactory.SummaryElement(
XmlSyntaxFactory.Text("This class represents an HTTP API call to "),
XmlSyntaxFactory.PlaceholderElement(XmlSyntaxFactory.Text(callName)),
XmlSyntaxFactory.Text(" with the "),
XmlSyntaxFactory.PlaceholderElement(XmlSyntaxFactory.Text(fullServiceName)),
XmlSyntaxFactory.Text(".")),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.SeeAlsoElement(SyntaxFactory.NameMemberCref(SyntaxFactory.ParseName($"{serviceInterfaceName}.Prepare{callName}Async"))),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.SeeAlsoElement(SyntaxFactory.NameMemberCref(SyntaxFactory.ParseName($"{serviceExtensionsClassName}.{callName}Async"))),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.ThreadSafetyElement(),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.PreliminaryElement())
.WithAdditionalAnnotations(Simplifier.Annotation);
SyntaxTrivia documentationTrivia = SyntaxFactory.Trivia(documentationComment);
newClassDeclaration = newClassDeclaration.WithLeadingTrivia(newClassDeclaration.GetLeadingTrivia().Add(documentationTrivia));
SyntaxNode root = await context.Document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
SyntaxNode newRoot = root.ReplaceNode(classDeclarationSyntax, newClassDeclaration);
return(context.Document.WithSyntaxRoot(newRoot));
}
private async Task <Solution> CreateChangedSolution(CodeFixContext context, ClassDeclarationSyntax classDeclarationSyntax, PropertyDeclarationSyntax propertyDeclarationSyntax, CancellationToken cancellationToken)
{
Solution solution = context.Document.Project.Solution;
Solution newSolution = solution;
/*
* Add the implementation method to the class containing the property.
*/
AccessorDeclarationSyntax propertyGetter = propertyDeclarationSyntax.AccessorList.Accessors.First(accessor => accessor.Keyword.IsKind(SyntaxKind.GetKeyword));
SyntaxNode root = classDeclarationSyntax.SyntaxTree.GetRoot(cancellationToken);
SemanticModel semanticModel = await context.Document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
INamedTypeSymbol declaringType = semanticModel.GetDeclaredSymbol(classDeclarationSyntax);
IPropertySymbol property = semanticModel.GetDeclaredSymbol(propertyDeclarationSyntax);
SyntaxNode newRoot = root.ReplaceNode(
classDeclarationSyntax,
classDeclarationSyntax.AddMembers(
BuildImplementationMethod(semanticModel, declaringType, property, propertyGetter)));
newSolution = newSolution.WithDocumentSyntaxRoot(context.Document.Id, newRoot);
/*
* Generate the extension method
*/
MethodDeclarationSyntax extensionMethod = BuildGenericWrapperMethod(declaringType, property);
/*
* Try to locate an existing extension methods class for the type.
*/
string extensionClassName = $"{declaringType.Name}Extensions";
INamedTypeSymbol extensionMethodsClass = declaringType.ContainingNamespace.GetTypeMembers(extensionClassName, 0).FirstOrDefault();
if (extensionMethodsClass != null)
{
// Add the new extension method to the existing class.
Location location = extensionMethodsClass.Locations.FirstOrDefault(i => i.IsInSource);
if (location == null)
{
return(solution);
}
Document extensionsDocument = context.Document.Project.Solution.GetDocument(location.SourceTree);
if (extensionsDocument == null)
{
return(solution);
}
SyntaxNode extensionsRoot = await extensionsDocument.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
ClassDeclarationSyntax extensionsClass = extensionsRoot.FindNode(location.SourceSpan, getInnermostNodeForTie: true).FirstAncestorOrSelf <ClassDeclarationSyntax>();
if (extensionsClass == null)
{
return(solution);
}
SyntaxNode newExtensionsRoot = extensionsRoot.ReplaceNode(extensionsClass, extensionsClass.AddMembers(extensionMethod));
newSolution = newSolution.WithDocumentSyntaxRoot(extensionsDocument.Id, newExtensionsRoot);
}
else
{
// Need to add a new class for the extension methods.
DocumentationCommentTriviaSyntax documentationComment = XmlSyntaxFactory.DocumentationComment(
XmlSyntaxFactory.SummaryElement(
XmlSyntaxFactory.Text("This class provides extension methods for the "),
XmlSyntaxFactory.SeeElement(
SyntaxFactory.TypeCref(SyntaxFactory.ParseTypeName(declaringType.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)))),
XmlSyntaxFactory.Text(" class.")),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.ThreadSafetyElement(),
XmlSyntaxFactory.NewLine(),
XmlSyntaxFactory.PreliminaryElement());
SyntaxNode extensionsClassRoot = SyntaxFactory.CompilationUnit().AddMembers(
SyntaxFactory.NamespaceDeclaration(SyntaxFactory.ParseName(declaringType.ContainingNamespace.ToDisplayString(SymbolDisplayFormat.FullyQualifiedFormat)))
.AddUsings(SyntaxFactory.UsingDirective(SyntaxFactory.ParseName("global::System")))
.AddMembers(
SyntaxFactory.ClassDeclaration(extensionClassName)
.AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword), SyntaxFactory.Token(SyntaxKind.StaticKeyword))
.AddMembers(extensionMethod)
.WithLeadingTrivia(SyntaxFactory.TriviaList(SyntaxFactory.Trivia(documentationComment)))))
.WithAdditionalAnnotations(Simplifier.Annotation);
DocumentId extensionsDocumentId = DocumentId.CreateNewId(context.Document.Project.Id);
newSolution = newSolution
.AddDocument(extensionsDocumentId, $"{extensionClassName}.cs", extensionsClassRoot, context.Document.Folders);
// Make sure to also add the file to linked projects.
foreach (var linkedDocumentId in context.Document.GetLinkedDocumentIds())
{
DocumentId linkedExtensionDocumentId = DocumentId.CreateNewId(linkedDocumentId.ProjectId);
newSolution = newSolution
.AddDocument(linkedExtensionDocumentId, $"{extensionClassName}.cs", extensionsClassRoot, context.Document.Folders);
}
}
return(newSolution);
}