// Copyright 2004-2011 Castle Project - http://www.castleproject.org/
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Castle.DynamicProxy.Generators.Emitters.SimpleAST
{
	using System.Reflection;
	using System.Reflection.Emit;

	public abstract class Reference
	{
		protected Reference owner = SelfReference.Self;

		protected Reference()
		{
		}

		protected Reference(Reference owner)
		{
			this.owner = owner;
		}

		public Reference OwnerReference
		{
			get { return owner; }
			set { owner = value; }
		}

		public abstract void LoadAddressOfReference(ILGenerator gen);

		public abstract void LoadReference(ILGenerator gen);

		public abstract void StoreReference(ILGenerator gen);

		public virtual void Generate(ILGenerator gen)
		{
		}

		public virtual Expression ToAddressOfExpression()
		{
			return new AddressOfReferenceExpression(this);
		}

		public virtual Expression ToExpression()
		{
			return new ReferenceExpression(this);
		}
	}
}