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//
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
//
namespace Microsoft.VisualStudio.Text.Operations
{
/// <summary>
/// Represents the extent of a word.
/// </summary>
public struct TextExtent
{
#region Private Members
SnapshotSpan _span;
bool _isSignificant;
#endregion // Private Members
/// <summary>
/// Initializes a new instance of <see cref="TextExtent"/>.
/// </summary>
/// <param name="span">
/// The <see cref="SnapshotSpan"/> that includes the extent.
/// </param>
/// <param name="isSignificant">
/// <c>false</c> if the extent contains whitespace, unless whitespace should be treated like any other character.
/// </param>
public TextExtent(SnapshotSpan span, bool isSignificant)
{
_span = span;
_isSignificant = isSignificant;
}
/// <summary>
/// Initializes a new instance of a <see cref="TextExtent"/> from the specified <see cref="TextExtent"/>.
/// </summary>
/// <param name="textExtent">The <see cref="TextExtent"/> from which to copy.
/// </param>
public TextExtent(TextExtent textExtent)
{
_span = textExtent.Span;
_isSignificant = textExtent.IsSignificant;
}
#region Public Properties
/// <summary>
/// Gets the <see cref="SnapshotSpan"/>.
/// </summary>
public SnapshotSpan Span
{
get { return _span; }
}
/// <summary>
/// Determines whether the extent is significant. <c>false</c> for whitespace or other
/// insignificant characters that should be ignored during navigation.
/// </summary>
public bool IsSignificant
{
get { return _isSignificant; }
}
#endregion // Public Properties
#region Overrides and operators
/// <summary>
/// Determines whether two <see cref="TextExtent"/> objects are the same.
/// </summary>
/// <param name="obj">The <see cref="TextExtent"/> to compare.</param>
/// <returns><c>true</c> if the two objects are the same, otherwise <c>false</c>.</returns>
public override bool Equals(object obj)
{
if (obj != null && obj is TextExtent)
{
return this == (TextExtent)obj;
}
else
{
return false;
}
}
/// <summary>
/// Gets the hash code of the object.
/// </summary>
/// <returns>The hash code.</returns>
public override int GetHashCode()
{
return base.GetHashCode();
}
/// <summary>
/// Determines whether two <see cref="TextExtent"/> objects are the same.
/// </summary>
/// <param name="extent1">The first object.</param>
/// <param name="extent2">The second object.</param>
/// <returns><c>true</c> if the objects are the same, otherwise false.</returns>
public static bool operator ==(TextExtent extent1, TextExtent extent2)
{
return extent1._span == extent2._span && extent1._isSignificant == extent2._isSignificant;
}
/// <summary>
/// Determines whether two <see cref="TextExtent"/> objects are different.
/// </summary>
/// <param name="extent1">The first object.</param>
/// <param name="extent2">The second object.</param>
/// <returns><c>true</c> if the two objects are different, otherwise <c>false</c>.</returns>
public static bool operator !=(TextExtent extent1, TextExtent extent2)
{
return !(extent1 == extent2);
}
#endregion
}
}
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