private async Task BuildSymbolReferencesAsync(
ISymbol memberSymbol,
Document documentNamespaceDefinition,
ChangesCalculationsContext context,
CancellationToken cancellationToken)
{
var symbolReferences = await SymbolFinder.FindReferencesAsync(memberSymbol, documentNamespaceDefinition.Project.Solution, cancellationToken);
var namedTypeSymbolReferences = symbolReferences.Where(x => x.Definition.Kind == SymbolKind.NamedType);
foreach (var reference in namedTypeSymbolReferences)
{
foreach (var location in reference.Locations)
{
cancellationToken.ThrowIfCancellationRequested();
var syntaxRoot = await location.Document.GetSyntaxRootAsync(cancellationToken);
var semanticModel = await location.Document.GetSemanticModelAsync(cancellationToken);
var referenceNode = syntaxRoot.FindNode(location.Location.SourceSpan);
if (referenceNode.Parent is QualifiedNameSyntax)
{
var namespaceNode = ((QualifiedNameSyntax)referenceNode.Parent).Left;
context.AddChange(namespaceNode.Span, location.Document, documentNamespaceDefinition.GetExpectedNamespace());
}
else if (referenceNode.Parent is MemberAccessExpressionSyntax)
{
var namespaceNode = ((MemberAccessExpressionSyntax)referenceNode.Parent).Expression;
if (namespaceNode != referenceNode)
{
context.AddChange(namespaceNode.Span, location.Document, documentNamespaceDefinition.GetExpectedNamespace());
}
}
}
}
}
public async Task <ICollection <DocumentChanges> > CalculateChangesAsync(
ICollection <Document> documents,
IProgress <ProgressInfo> progress,
CancellationToken cancellationToken)
{
if (!documents.Any())
{
return(null);
}
var context = new ChangesCalculationsContext(documents);
var itemInProgress = 1;
foreach (var document in documents)
{
var namespaceDeclaration = await GetNamespaceDeclarationIfNeedToFixItAsync(document, context, cancellationToken);
if (namespaceDeclaration != null)
{
var semanticModel = await document.GetSemanticModelAsync(cancellationToken);
var declaredMembers = namespaceDeclaration.ChildNodes().Where(x => x is MemberDeclarationSyntax);
foreach (var declaredMember in declaredMembers)
{
var memberSymbol = semanticModel.GetDeclaredSymbol(declaredMember);
await BuildSymbolReferencesAsync(memberSymbol, document, context, cancellationToken);
}
}
progress.Report(
new ProgressInfo($"{itemInProgress} of {documents.Count} namespca in progress...",
itemInProgress * 100 / documents.Count));
}
return(context.Changes);
}
private async Task <NamespaceDeclarationSyntax> GetNamespaceDeclarationIfNeedToFixItAsync(Document document, ChangesCalculationsContext context, CancellationToken cancellationToken)
{
var syntaxRoot = await document.GetSyntaxRootAsync(cancellationToken);
var nodes = syntaxRoot.DescendantNodes().ToList();
var namespaceNodes = nodes.OfType <NamespaceDeclarationSyntax>().ToList();
if (!namespaceNodes.Any() || namespaceNodes.Count > 1)
{
// TODO: need to handle this case
return(null);
}
var namespaceDeclaration = namespaceNodes.Single();
var expectedNamespace = document.GetExpectedNamespace();
if (namespaceDeclaration.Name.GetText().ToString().Trim() == expectedNamespace)
{
return(null);
}
context.AddChange(namespaceDeclaration.Name.Span, document, document.GetExpectedNamespace());
return(namespaceDeclaration);
}