107 lines
2.8 KiB
C#
107 lines
2.8 KiB
C#
//---------------------------------------------------------------------
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// <copyright file="Pair.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//
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// @owner [....]
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// @backupOwner [....]
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//---------------------------------------------------------------------
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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using System.Diagnostics;
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using System.Linq;
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namespace System.Data.Common.Utils
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{
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internal class Pair<TFirst, TSecond> : InternalBase
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{
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#region Fields
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private readonly TFirst first;
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private readonly TSecond second;
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#endregion
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#region Constructor
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internal Pair(TFirst first, TSecond second)
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{
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this.first = first;
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this.second = second;
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}
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#endregion
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#region Properties
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internal TFirst First
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{
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get
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{
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return first;
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}
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}
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internal TSecond Second
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{
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get
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{
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return second;
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}
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}
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#endregion
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#region Methods
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public override int GetHashCode()
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{
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return (first.GetHashCode()<<5) ^ second.GetHashCode();
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}
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public bool Equals(Pair<TFirst, TSecond> other)
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{
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return first.Equals(other.first) && second.Equals(other.second);
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}
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public override bool Equals(object other)
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{
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Pair<TFirst, TSecond> otherPair = other as Pair<TFirst, TSecond>;
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return (otherPair != null && Equals(otherPair));
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}
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#endregion
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#region InternalBase
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internal override void ToCompactString(StringBuilder builder)
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{
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builder.Append("<");
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builder.Append(first.ToString());
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builder.Append(", "+second.ToString());
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builder.Append(">");
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}
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#endregion
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internal class PairComparer : IEqualityComparer<Pair<TFirst, TSecond>>
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{
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private PairComparer() { }
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internal static readonly PairComparer Instance = new PairComparer();
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private static readonly EqualityComparer<TFirst> firstComparer = EqualityComparer<TFirst>.Default;
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private static readonly EqualityComparer<TSecond> secondComparer = EqualityComparer<TSecond>.Default;
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public bool Equals(Pair<TFirst, TSecond> x, Pair<TFirst, TSecond> y)
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{
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return firstComparer.Equals(x.First, y.First) && secondComparer.Equals(x.Second, y.Second);
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}
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public int GetHashCode(Pair<TFirst, TSecond> source)
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{
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return source.GetHashCode();
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}
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}
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}
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}
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