/* Copyright (C) 2004 - 2006  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
namespace Mono.Cecil.Cil {

	public sealed class Instruction : IInstruction {

		int m_offset;
		OpCode m_opCode;
		object m_operand;

		Instruction m_previous;
		Instruction m_next;

		public int Offset {
			get { return m_offset; }
			set { m_offset = value; }
		}

		public OpCode OpCode {
			get { return m_opCode; }
			set { m_opCode = value; }
		}

		public object Operand {
			get { return m_operand; }
			set { m_operand = value; }
		}

		public Instruction Previous {
			get { return m_previous; }
			set { m_previous = value; }
		}

		public Instruction Next {
			get { return m_next; }
			set { m_next = value; }
		}

		internal Instruction (int offset, OpCode opCode, object operand) : this (offset, opCode)
		{
			m_operand = operand;
		}

		internal Instruction (int offset, OpCode opCode)
		{
			m_offset = offset;
			m_opCode = opCode;
		}

		internal Instruction (OpCode opCode, object operand) : this (0, opCode, operand)
		{
		}

		internal Instruction (OpCode opCode) : this (0, opCode)
		{
		}

		public void Accept (ICodeVisitor visitor)
		{
			visitor.VisitInstruction (this);
		}
	}
}