internal static IEnumerable <IAttribute> GetAttributes(IMember member)
{
HashSet <IMember> visitedMembers = new HashSet <IMember>();
do
{
member = member.MemberDefinition; // it's sufficient to look at the definitions
if (!visitedMembers.Add(member))
{
// abort if we seem to be in an infinite loop (cyclic inheritance)
break;
}
foreach (var attr in member.GetAttributes())
{
yield return(attr);
}
} while (member.IsOverride && (member = InheritanceHelper.GetBaseMember(member)) != null);
}
/// <summary>
/// Gets the attributes on the entity.
/// </summary>
/// <param name="entity">The entity on which the attributes are declared.</param>
/// <param name="inherit">
/// Specifies whether attributes inherited from base classes and base members
/// (if the given <paramref name="entity"/> in an <c>override</c>)
/// should be returned.
/// </param>
/// <returns>
/// Returns the list of attributes that were found.
/// If inherit is true, attributes from the entity itself are returned first;
/// followed by attributes inherited from the base entity.
/// </returns>
public static IEnumerable <IAttribute> GetAttributes(this IEntity entity, bool inherit)
{
if (inherit)
{
if (entity is ITypeDefinition td)
{
return(InheritanceHelper.GetAttributes(td));
}
else if (entity is IMember m)
{
return(InheritanceHelper.GetAttributes(m));
}
else
{
throw new NotSupportedException("Unknown entity type");
}
}
else
{
return(entity.GetAttributes());
}
}