#region License
/* 
 * Copyright (C) 1999-2022 John Källén.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#endregion

using System;
using System.Collections.Generic;
using System.IO;

namespace Reko.Core.Types
{
    /// <summary>
    /// Models an unknown type. If <see cref="Size"/> is non-zero,
    /// only the size of the type is known. If the Size is zero, we
    /// don't even known what size the type is.
    /// </summary>
	public class UnknownType : DataType
	{
        private readonly int size;

		public UnknownType(int size = 0)
            : base(Domain.Any)
		{
            this.size = size;
		}

        public override void Accept(IDataTypeVisitor v)
        {
            v.VisitUnknownType(this);
        }

        public override T Accept<T>(IDataTypeVisitor<T> v)
        {
            return v.VisitUnknownType(this);
        }

        public override DataType Clone(IDictionary<DataType, DataType>? clonedTypes)
		{
			return this;
		}

		public override int Size
		{
			get { return size; }
			set { ThrowBadSize(); }
		}
	}
}
