File: MemberDefinitionCollection.cs

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//
// MemberDefinitionCollection.cs
//
// Author:
//   Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2011 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;

using Mono.Collections.Generic;

namespace Mono.Cecil {

	class MemberDefinitionCollection<T> : Collection<T> where T : IMemberDefinition {

		TypeDefinition container;

		internal MemberDefinitionCollection (TypeDefinition container)
		{
			this.container = container;
		}

		internal MemberDefinitionCollection (TypeDefinition container, int capacity)
			: base (capacity)
		{
			this.container = container;
		}

		protected override void OnAdd (T item, int index)
		{
			Attach (item);
		}

		protected sealed override void OnSet (T item, int index)
		{
			Attach (item);
		}

		protected sealed override void OnInsert (T item, int index)
		{
			Attach (item);
		}

		protected sealed override void OnRemove (T item, int index)
		{
			Detach (item);
		}

		protected sealed override void OnClear ()
		{
			foreach (var definition in this)
				Detach (definition);
		}

		void Attach (T element)
		{
			if (element.DeclaringType == container)
				return;

			if (element.DeclaringType != null)
				throw new ArgumentException ("Member already attached");

			element.DeclaringType = this.container;
		}

		static void Detach (T element)
		{
			element.DeclaringType = null;
		}
	}
}