/// <summary>
/// Returns the name of the namespace to which the given position belongs.
/// Returns null if the given file or position is null, or if no such namespace can be found
/// (e.g. because the namespace name is invalid).
/// </summary>
public static string?TryGetNamespaceAt(this FileContentManager file, Position pos)
{
if (file == null || pos == null || !file.ContainsPosition(pos))
{
return(null);
}
var namespaces = file.GetNamespaceDeclarations();
var preceding = namespaces.TakeWhile(tuple => tuple.Item2.Start < pos);
return(preceding.Any() ? preceding.Last().Item1 : null);
}
/// <summary>
/// Returns the name of the namespace to which the given position belongs.
/// Returns null if the given file or position is null, or if no such namespace can be found
/// (e.g. because the namespace name is invalid).
/// </summary>
public static string TryGetNamespaceAt(this FileContentManager file, Position pos)
{
if (file == null || pos == null || !Utils.IsValidPosition(pos, file))
{
return(null);
}
var namespaces = file.GetNamespaceDeclarations();
var preceding = namespaces.TakeWhile(tuple => tuple.Item2.Start.IsSmallerThan(pos));
return(preceding.Any() ? preceding.Last().Item1.Value : null);
}
