private static async Task <SyntaxNode> CreateNewDocumentSyntaxRootAsync(FixAllContext fixAllContext, Document document, CancellationToken cancellationToken)
{
var diagnostics = await fixAllContext.GetDocumentDiagnosticsAsync(document).ConfigureAwait(false);
var root = await document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
var nodesToFix = diagnostics.Select(diagnostic => DefaulIfNullExpressionHelper.GetTargetExpression(diagnostic, root));
return(root.ReplaceNodes(nodesToFix,
(orignalNode, rewritten) => DefaulIfNullExpressionHelper.CreateRelacementNode(rewritten)));
}
private static void AnalyzeNode(SyntaxNodeAnalysisContext context)
{
var node = (context.Node as MemberAccessExpressionSyntax);
if (node == null || !DefaulIfNullExpressionHelper.CanFix(node))
{
return;
}
var diagnostic = Diagnostic.Create(Rule, node.Name.GetLocation(), node.Name.ToString());
context.ReportDiagnostic(diagnostic);
}
private static async Task <Document> CreateChangedDocument(CodeFixContext codeFixContext, CancellationToken cancellationToken)
{
var document = codeFixContext.Document;
var diagnostic = codeFixContext.Diagnostics.First();
var root = await document.GetSyntaxRootAsync(cancellationToken);
var invocationExpression = DefaulIfNullExpressionHelper.GetTargetExpression(diagnostic, root);
var replacement = DefaulIfNullExpressionHelper.CreateRelacementNode(invocationExpression);
var newRoot = root.ReplaceNode(invocationExpression, replacement);
return(document.WithSyntaxRoot(newRoot));
}