mirror of https://github.com/icsharpcode/ILSpy.git
Daniel Grunwald
14 years ago
24 changed files with 380 additions and 66 deletions
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@@ -0,0 +1,107 @@
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System; |
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namespace ICSharpCode.AvalonEdit.Utils |
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{ |
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/// <summary>
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/// Represents a string with a segment.
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/// Similar to System.ArraySegment<T>, but for strings instead of arrays.
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/// </summary>
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public struct StringSegment : IEquatable<StringSegment> |
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{ |
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readonly string text; |
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readonly int offset; |
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readonly int count; |
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/// <summary>
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/// Creates a new StringSegment.
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/// </summary>
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public StringSegment(string text, int offset, int count) |
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{ |
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if (text == null) |
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throw new ArgumentNullException("text"); |
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if (offset < 0 || offset > text.Length) |
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throw new ArgumentOutOfRangeException("offset"); |
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if (offset + count > text.Length) |
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throw new ArgumentOutOfRangeException("count"); |
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this.text = text; |
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this.offset = offset; |
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this.count = count; |
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} |
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/// <summary>
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/// Creates a new StringSegment.
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/// </summary>
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public StringSegment(string text) |
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{ |
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if (text == null) |
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throw new ArgumentNullException("text"); |
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this.text = text; |
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this.offset = 0; |
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this.count = text.Length; |
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} |
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/// <summary>
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/// Gets the string used for this segment.
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/// </summary>
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public string Text { |
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get { return text; } |
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} |
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/// <summary>
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/// Gets the start offset of the segment with the text.
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/// </summary>
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public int Offset { |
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get { return offset; } |
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} |
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/// <summary>
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/// Gets the length of the segment.
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/// </summary>
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public int Count { |
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get { return count; } |
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} |
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#region Equals and GetHashCode implementation
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/// <inheritdoc/>
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public override bool Equals(object obj) |
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{ |
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if (obj is StringSegment) |
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return Equals((StringSegment)obj); // use Equals method below
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else |
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return false; |
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} |
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/// <inheritdoc/>
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public bool Equals(StringSegment other) |
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{ |
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// add comparisions for all members here
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return object.ReferenceEquals(this.text, other.text) && offset == other.offset && count == other.count; |
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} |
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/// <inheritdoc/>
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public override int GetHashCode() |
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{ |
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return text.GetHashCode() ^ offset ^ count; |
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} |
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/// <summary>
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/// Equality operator.
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/// </summary>
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public static bool operator ==(StringSegment left, StringSegment right) |
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{ |
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return left.Equals(right); |
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} |
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/// <summary>
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/// Inequality operator.
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/// </summary>
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public static bool operator !=(StringSegment left, StringSegment right) |
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{ |
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return !left.Equals(right); |
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} |
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#endregion
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} |
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} |
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