public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context) { SyntaxNode root = await context.Document .GetSyntaxRootAsync(context.CancellationToken) .ConfigureAwait(false); CompilationUnitSyntax compilationUnit = root .FindNode(context.Span, getInnermostNodeForTie: true)? .FirstAncestorOrSelf <CompilationUnitSyntax>(); foreach (Diagnostic diagnostic in context.Diagnostics) { switch (diagnostic.Id) { case DiagnosticIdentifiers.AddCodeFileHeader: { CodeAction codeAction = CodeAction.Create( "Add code file header", cancellationToken => AddCodeFileHeaderRefactoring.RefactorAsync(context.Document, compilationUnit, cancellationToken), DiagnosticIdentifiers.AddCodeFileHeader); context.RegisterCodeFix(codeAction, diagnostic); break; } } } }
private void AnalyzeCompilationUnit(SyntaxNodeAnalysisContext context) { var compilationUnit = (CompilationUnitSyntax)context.Node; if (AddCodeFileHeaderRefactoring.CanRefactor(compilationUnit)) { Location location = Location.Create( compilationUnit.SyntaxTree, new TextSpan(compilationUnit.FullSpan.Start, 0)); context.ReportDiagnostic( DiagnosticDescriptors.AddCodeFileHeader, location); } }