81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
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// <copyright>
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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namespace System.Activities.Debugger
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{
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using System.Diagnostics;
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using System.Diagnostics.CodeAnalysis;
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[DebuggerDisplay("{this.ToString()}")]
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internal class BinarySearchResult
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{
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private int result;
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private int count;
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internal BinarySearchResult(int resultFromBinarySearch, int count)
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{
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this.result = resultFromBinarySearch;
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this.count = count;
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}
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internal bool IsFound
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{
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get { return this.result >= 0; }
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}
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[DebuggerBrowsable(DebuggerBrowsableState.Never)]
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internal int FoundIndex
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{
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get
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{
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UnitTestUtility.Assert(this.IsFound, "We should not call FoundIndex if we cannot find the element.");
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return this.result;
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}
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}
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[DebuggerBrowsable(DebuggerBrowsableState.Never)]
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internal int NextIndex
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{
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get
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{
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UnitTestUtility.Assert(!this.IsFound, "We should not call NextIndex if we found the element.");
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UnitTestUtility.Assert(this.IsNextIndexAvailable, "We should not call NextIndex if next index is not available.");
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return this.NextIndexValue;
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}
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}
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[DebuggerBrowsable(DebuggerBrowsableState.Never)]
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internal bool IsNextIndexAvailable
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{
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get
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{
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UnitTestUtility.Assert(!this.IsFound, "We should not call IsNextIndexAvailable if we found the element.");
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return this.NextIndexValue != this.count;
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}
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}
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private int NextIndexValue
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{
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get { return ~this.result; }
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}
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[SuppressMessage("Microsoft.Globalization", "CA1305:SpecifyIFormatProvider", MessageId = "System.String.Format(System.String,System.Object)", Justification = "Message used in debugger only.")]
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public override string ToString()
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{
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if (this.IsFound)
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{
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return string.Format("Data is found at index {0}.", this.FoundIndex);
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}
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else if (this.IsNextIndexAvailable)
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{
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return string.Format("Data is not found, the next index is {0}.", this.NextIndex);
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}
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else
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{
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return "Data is not found and there is no next index.";
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}
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}
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}
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}
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