2008-07-17 21:19:41 +00:00
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#region CPL License
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/*
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Nuclex Framework
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2010-07-08 12:37:39 +00:00
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Copyright (C) 2002-2010 Nuclex Development Labs
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2008-07-17 21:19:41 +00:00
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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2008-07-17 20:44:40 +00:00
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using System.Collections.Generic;
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namespace Nuclex.Support.Collections {
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/// <summary>
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/// Compares two values in reverse or reverses the output of another comparer
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/// </summary>
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/// <typeparam name="ComparedType">Type of values to be compared</typeparam>
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public class ReverseComparer<ComparedType> : IComparer<ComparedType> {
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/// <summary>Initializes a new reverse comparer</summary>
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public ReverseComparer() : this(Comparer<ComparedType>.Default) { }
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/// <summary>
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/// Initializes the comparer to provide the inverse results of another comparer
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/// </summary>
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/// <param name="comparerToReverse">Comparer whose results will be inversed</param>
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public ReverseComparer(IComparer<ComparedType> comparerToReverse) {
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this.comparer = comparerToReverse;
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}
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/// <summary>Compares the left value to the right value</summary>
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/// <param name="left">Value on the left side</param>
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/// <param name="right">Value on the right side</param>
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/// <returns>The relationship of the two values</returns>
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public int Compare(ComparedType left, ComparedType right) {
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return this.comparer.Compare(right, left); // intentionally reversed
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}
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/// <summary>The default comparer from the .NET framework</summary>
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private IComparer<ComparedType> comparer;
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}
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} // namespace Nuclex.Support.Collections
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