/// <summary>
/// Searches for namespaces that match the name the user has written. Returns <see cref="SymbolReference"/>s
/// to the <see cref="INamespaceSymbol"/>s those namespaces are contained in.
/// </summary>
private async Task <ImmutableArray <SymbolReference> > GetReferencesForMatchingNamespacesAsync(
SearchScope searchScope)
{
searchScope.CancellationToken.ThrowIfCancellationRequested();
if (_owner.CanAddImportForNamespace(_diagnosticId, _node, out var nameNode))
{
_syntaxFacts.GetNameAndArityOfSimpleName(nameNode, out var name, out var arity);
if (arity == 0 &&
!ExpressionBinds(nameNode, checkForExtensionMethods: false, cancellationToken: searchScope.CancellationToken))
{
var symbols = await searchScope.FindDeclarationsAsync(name, nameNode, SymbolFilter.Namespace).ConfigureAwait(false);
var namespaceSymbols = OfType <INamespaceSymbol>(symbols);
var containingNamespaceSymbols = OfType <INamespaceSymbol>(symbols).SelectAsArray(s => s.WithSymbol(s.Symbol.ContainingNamespace));
return(GetNamespaceSymbolReferences(searchScope, containingNamespaceSymbols));
}
}
return(ImmutableArray <SymbolReference> .Empty);
}
