niko
104 lines
4.4 KiB
C#
104 lines
4.4 KiB
C#
using System;
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using System.Globalization;
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using System.Runtime.InteropServices;
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using System.Runtime.Serialization;
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namespace System.Collections
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{
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/// <summary>Compares two objects for equivalence, where string comparisons are case-sensitive.</summary>
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/// <filterpriority>2</filterpriority>
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// Token: 0x02000127 RID: 295
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[ComVisible(true)]
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[Serializable]
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public sealed class Comparer : ISerializable, IComparer
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{
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// Token: 0x06000F51 RID: 3921 RVA: 0x00040574 File Offset: 0x0003E774
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private Comparer()
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{
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}
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/// <summary>Initializes a new instance of the <see cref="T:System.Collections.Comparer" /> class using the specified <see cref="T:System.Globalization.CultureInfo" />.</summary>
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/// <param name="culture">The <see cref="T:System.Globalization.CultureInfo" /> to use for the new <see cref="T:System.Collections.Comparer" />. </param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="culture" /> is null. </exception>
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// Token: 0x06000F52 RID: 3922 RVA: 0x0004057C File Offset: 0x0003E77C
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public Comparer(CultureInfo culture)
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{
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if (culture == null)
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{
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throw new ArgumentNullException("culture");
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}
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this.m_compareInfo = culture.CompareInfo;
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}
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/// <summary>Performs a case-sensitive comparison of two objects of the same type and returns a value indicating whether one is less than, equal to, or greater than the other.</summary>
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/// <returns>Value Condition Less than zero <paramref name="a" /> is less than <paramref name="b" />. Zero <paramref name="a" /> equals <paramref name="b" />. Greater than zero <paramref name="a" /> is greater than <paramref name="b" />. </returns>
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/// <param name="a">The first object to compare. </param>
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/// <param name="b">The second object to compare. </param>
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/// <exception cref="T:System.ArgumentException">Neither <paramref name="a" /> nor <paramref name="b" /> implements the <see cref="T:System.IComparable" /> interface.-or- <paramref name="a" /> and <paramref name="b" /> are of different types and neither one can handle comparisons with the other. </exception>
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/// <filterpriority>2</filterpriority>
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// Token: 0x06000F54 RID: 3924 RVA: 0x000405C0 File Offset: 0x0003E7C0
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public int Compare(object a, object b)
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{
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if (a == b)
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{
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return 0;
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}
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if (a == null)
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{
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return -1;
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}
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if (b == null)
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{
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return 1;
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}
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if (this.m_compareInfo != null)
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{
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string text = a as string;
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string text2 = b as string;
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if (text != null && text2 != null)
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{
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return this.m_compareInfo.Compare(text, text2);
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}
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}
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if (a is IComparable)
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{
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return (a as IComparable).CompareTo(b);
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}
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if (b is IComparable)
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{
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return -(b as IComparable).CompareTo(a);
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}
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throw new ArgumentException(Locale.GetText("Neither 'a' nor 'b' implements IComparable."));
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}
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/// <summary>Populates a <see cref="T:System.Runtime.Serialization.SerializationInfo" /> object with the data required for serialization. </summary>
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/// <param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo" /> object to populate with data.</param>
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/// <param name="context">The context information about the source or destination of the serialization.</param>
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/// <exception cref="T:System.ArgumentNullException">The <paramref name="info" /> parameter is null.</exception>
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/// <filterpriority>2</filterpriority>
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// Token: 0x06000F55 RID: 3925 RVA: 0x0004065C File Offset: 0x0003E85C
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public void GetObjectData(SerializationInfo info, StreamingContext context)
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{
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if (info == null)
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{
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throw new ArgumentNullException("info");
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}
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info.AddValue("CompareInfo", this.m_compareInfo, typeof(CompareInfo));
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}
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/// <summary>Represents an instance of <see cref="T:System.Collections.Comparer" /> that is associated with the <see cref="P:System.Threading.Thread.CurrentCulture" /> of the current thread. This field is read-only.</summary>
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/// <filterpriority>1</filterpriority>
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// Token: 0x040003B9 RID: 953
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public static readonly Comparer Default = new Comparer();
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/// <summary>Represents an instance of <see cref="T:System.Collections.Comparer" /> that is associated with <see cref="P:System.Globalization.CultureInfo.InvariantCulture" />. This field is read-only.</summary>
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/// <filterpriority>1</filterpriority>
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// Token: 0x040003BA RID: 954
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public static readonly Comparer DefaultInvariant = new Comparer(CultureInfo.InvariantCulture);
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// Token: 0x040003BB RID: 955
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private CompareInfo m_compareInfo;
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}
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}
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