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StatePair.cs
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StatePair.cs
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/*
* dk.brics.automaton
*
* Copyright (c) 2001-2009 Anders Moeller
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* this SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* this SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System.Runtime.CompilerServices;
namespace Lucene.Net.Util.Automaton
{
/// <summary>
/// Pair of states.
/// <para/>
/// @lucene.experimental
/// </summary>
public class StatePair
{
internal State s;
internal State s1;
internal State s2;
internal StatePair(State s, State s1, State s2)
{
this.s = s;
this.s1 = s1;
this.s2 = s2;
}
/// <summary>
/// Constructs a new state pair.
/// </summary>
/// <param name="s1"> First state. </param>
/// <param name="s2"> Second state. </param>
public StatePair(State s1, State s2)
{
this.s1 = s1;
this.s2 = s2;
}
/// <summary>
/// Returns first component of this pair.
/// </summary>
/// <returns> First state. </returns>
public virtual State FirstState => s1;
/// <summary>
/// Returns second component of this pair.
/// </summary>
/// <returns> Second state. </returns>
public virtual State SecondState => s2;
/// <summary>
/// Checks for equality.
/// </summary>
/// <param name="obj"> Object to compare with. </param>
/// <returns> <c>true</c> if <paramref name="obj"/> represents the same pair of states as this
/// pair. </returns>
public override bool Equals(object obj)
{
if (obj is StatePair p)
{
return p.s1 == s1 && p.s2 == s2;
}
else
{
return false;
}
}
/// <summary>
/// Returns hash code.
/// </summary>
/// <returns> Hash code. </returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public override int GetHashCode()
{
return s1.GetHashCode() + s2.GetHashCode();
}
}
}