19 changed files with 283 additions and 29 deletions
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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 MIT X11 license (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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// 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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using ICSharpCode.SharpDevelop.Dom; |
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using ICSharpCode.SharpDevelop.Dom.Refactoring; |
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using ICSharpCode.SharpDevelop.Dom.Tests.NUnitHelpers; |
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using NUnit.Framework; |
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namespace ICSharpCode.SharpDevelop.Dom.Tests |
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{ |
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[TestFixture] |
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public class IndexBeforeTextFinderTests |
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{ |
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TextFinder textFinder; |
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IndexBeforeTextFinderHelper helper; |
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void CreateIndexBeforeTextFinderWithSearchTextOf(string searchText) |
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{ |
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helper = new IndexBeforeTextFinderHelper(); |
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textFinder = helper.CreateIndexBeforeTextFinder(searchText); |
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} |
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void AssertTextFindMatchesAreEqual(TextFinderMatch expectedMatch, TextFinderMatch actualMatch) |
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{ |
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string expectedMatchAsString = GetTextFinderMatchAsString(expectedMatch); |
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string actualMatchAsString = GetTextFinderMatchAsString(actualMatch); |
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Assert.AreEqual(expectedMatchAsString, actualMatchAsString); |
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} |
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string GetTextFinderMatchAsString(TextFinderMatch match) |
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{ |
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return String.Format( |
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"Position: {0}, Length: {1}, ResolvePosition: {2}", |
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match.Position, |
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match.Length, |
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match.ResolvePosition); |
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} |
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[Test] |
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public void Find_SearchingForSquareBracketCharacterAndInputTextHasNoSquareBracketCharacter_ReturnsEmptyTextFinderMatch() |
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{ |
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CreateIndexBeforeTextFinderWithSearchTextOf("["); |
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TextFinderMatch match = textFinder.Find("abc", 0); |
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AssertTextFindMatchesAreEqual(TextFinderMatch.Empty, match); |
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} |
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[Test] |
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public void Find_SearchingForSquareBracketCharacterAndInputTextHasSquareBracketAtPositionOne_ReturnsTextFinderMatchForPositionOne() |
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{ |
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CreateIndexBeforeTextFinderWithSearchTextOf("["); |
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TextFinderMatch match = textFinder.Find("a[0]", 0); |
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TextFinderMatch expectedMatch = |
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new TextFinderMatch(position: 1, length: 1, resolvePosition: 0); |
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AssertTextFindMatchesAreEqual(expectedMatch, match); |
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} |
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[Test] |
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public void Find_SearchingForSquareBracketCharacterAndInputTextHasSquareBracketCharacterAtPositionZero_ReturnsEmptyTextFinderMatch() |
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{ |
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CreateIndexBeforeTextFinderWithSearchTextOf("["); |
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TextFinderMatch match = textFinder.Find("[assembly: AssemblyCulture(\"\")]", 0); |
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AssertTextFindMatchesAreEqual(TextFinderMatch.Empty, match); |
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} |
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} |
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} |
@ -0,0 +1,21 @@
@@ -0,0 +1,21 @@
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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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using ICSharpCode.SharpDevelop.Dom.Refactoring; |
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namespace ICSharpCode.SharpDevelop.Dom.Tests.NUnitHelpers |
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{ |
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public class IndexBeforeTextFinderHelper : LanguageProperties |
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{ |
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public IndexBeforeTextFinderHelper() |
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: base(StringComparer.Ordinal) |
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{ |
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} |
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public TextFinder CreateIndexBeforeTextFinder(string searchText) |
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{ |
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return new IndexBeforeTextFinder(searchText); |
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} |
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} |
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} |
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