private SymbolResolution ResolveViaUsings(NameSyntax baseName, NameSyntax name, IUsingsContainer usingsContainer)
{
if (!(name is SimpleNameSyntax))
return default(SymbolResolution);
if (baseName != null)
{
return baseName.Recurse(x => x.Parent)
.Select(ns => usingsContainer.UsingStatements
.SelectMaybe(u =>
{
var n = ns + u.Namespace + name;
return _map.TryGetValue(n);
})
.Select(x => new SymbolResolution(x))
.Aggregate(default(SymbolResolution), (l, r) => l & r))
.TryFirst(x => x.Status != SymbolResolutionStatus.NotFound)
.ValueOrDefault();
}
return usingsContainer.UsingStatements
.SelectMaybe(u =>
{
var n = u.Namespace + name;
return _map.TryGetValue(n);
})
.Select(x => new SymbolResolution(x))
.Aggregate(default(SymbolResolution), (l, r) => l & r);
}