/// <summary>
/// Finds types or namespaces described by a qualified name.
/// </summary>
/// <param name="qualifiedName">Sequence of simple plain names.</param>
/// <returns>
/// A set of namespace or type symbols with given qualified name (might comprise of types with multiple generic arities),
/// or an empty set if the member can't be found (the qualified name is ambiguous or the symbol doesn't exist).
/// </returns>
/// <remarks>
/// "C.D" matches C.D, C{T}.D, C{S,T}.D{U}, etc.
/// </remarks>
internal IEnumerable <NamespaceOrTypeSymbol> GetNamespaceOrTypeByQualifiedName(IEnumerable <string> qualifiedName)
{
NamespaceOrTypeSymbol namespaceOrType = this;
IEnumerable <NamespaceOrTypeSymbol> symbols = null;
foreach (string name in qualifiedName)
{
if (symbols != null)
{
// there might be multiple types of different arity, prefer a non-generic type:
namespaceOrType = symbols.OfMinimalArity();
if ((object)namespaceOrType == null)
{
return(SpecializedCollections.EmptyEnumerable <NamespaceOrTypeSymbol>());
}
}
symbols = namespaceOrType.GetMembers(name).OfType <NamespaceOrTypeSymbol>();
}
return(symbols);
}
