public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context) { SyntaxNode root = await context.GetSyntaxRootAsync().ConfigureAwait(false); if (!TryFindFirstAncestorOrSelf(root, context.Span, out ObjectCreationExpressionSyntax objectCreationExpression)) { return; } foreach (Diagnostic diagnostic in context.Diagnostics) { switch (diagnostic.Id) { case DiagnosticIdentifiers.UseEventArgsEmpty: { CodeAction codeAction = CodeAction.Create( "Use EventArgs.Empty", cancellationToken => UseEventArgsEmptyRefactoring.RefactorAsync(context.Document, objectCreationExpression, cancellationToken), GetEquivalenceKey(diagnostic)); context.RegisterCodeFix(codeAction, diagnostic); break; } } } }
public override void Initialize(AnalysisContext context) { if (context == null) { throw new ArgumentNullException(nameof(context)); } base.Initialize(context); context.RegisterCompilationStartAction(startContext => { INamedTypeSymbol eventArgsSymbol = startContext.Compilation.GetTypeByMetadataName(MetadataNames.System_EventArgs); if (eventArgsSymbol != null) { startContext.RegisterSyntaxNodeAction( nodeContext => UseEventArgsEmptyRefactoring.AnalyzeObjectCreationExpression(nodeContext, eventArgsSymbol), SyntaxKind.ObjectCreationExpression); } }); }