#region License Information
/* HeuristicLab
* Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab 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 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab 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 HeuristicLab. If not, see .
*/
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace HeuristicLab.Core {
///
/// A helper class which is used to create deep clones of object graphs.
///
public class Cloner : ICloner {
private class ReferenceEqualityComparer : IEqualityComparer {
public bool Equals(IItem x, IItem y) {
return object.ReferenceEquals(x, y);
}
public int GetHashCode(IItem item) {
if (item == null) return 0;
return item.GetHashCode();
}
}
private Dictionary mapping;
///
/// Creates a new Cloner instance.
///
public Cloner() {
mapping = new Dictionary(new ReferenceEqualityComparer());
}
///
/// Creates a deep clone of a given item.
///
/// The item which should be cloned.
/// A clone of the given item.
public IItem Clone(IItem item) {
if (item == null) return null;
IItem clone;
if (mapping.TryGetValue(item, out clone))
return clone;
else
return item.Clone(this);
}
///
/// Registers a new clone for a given item.
///
/// The original item.
/// The clone of the original item.
public void RegisterClonedObject(IItem item, IItem clone) {
mapping.Add(item, clone);
}
}
}