internal MessageImpl(ServiceImpl service, Type message)
{
if (!typeof(Delegate).IsAssignableFrom(message))
{
throw new ArgumentException("Message type " + message + " is not a delegate type");
}
Attribute attribute;
foreach (Attribute attr in message.GetCustomAttributes(false))
{
if (attr.GetType().FullName == typeof(PartMessageDelegate).FullName)
{
attribute = attr;
goto foundAttribute;
}
}
throw new ArgumentException("Message does not have the PartMessageDelegate attribute");
foundAttribute:
DelegateType = message;
ifMsg = ServiceImpl.AsDelegate(attribute);
if (ifMsg.Parent != null)
{
parent = (MessageImpl)service.AsIPartMessage(ifMsg.Parent);
}
}
/// <summary>
/// Convert delegate type into the IPartMessage interface.
/// </summary>
/// <param name="type">Delegate type to convert. This must be a delegate type marked with the <see cref="PartMessageDelegate"/> attribute.</param>
public IPartMessage AsIPartMessage(Type type)
{
IPartMessage value;
if (cachedPartMessages.TryGetValue(type, out value))
{
return(value);
}
return(cachedPartMessages[type] = new MessageImpl(this, type));
}
public bool MoveNext()
{
if (head == null)
{
throw new InvalidOperationException("Iterator disposed");
}
if (atEnd)
{
throw new InvalidOperationException("Iterator is at end");
}
current = current == null ? head : current.parent;
return(!(atEnd = (current == null)));
}
public void Reset()
{
current = null;
atEnd = false;
}
public void Dispose()
{
current = head = null;
atEnd = true;
}
