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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Classification;
namespace Microsoft.CodeAnalysis.Interactive
{
internal partial class InertClassifierProvider
{
private class InertClassifier : IClassifier
{
private readonly ITextBuffer _textBuffer;
public InertClassifier(ITextBuffer textBuffer)
=> _textBuffer = textBuffer;
#pragma warning disable 67
public event EventHandler<ClassificationChangedEventArgs> ClassificationChanged;
#pragma warning restore 67
public IList<ClassificationSpan> GetClassificationSpans(SnapshotSpan span)
{
// See if we have cached classifications for this text buffer and return the ones
// that intersect the requested span if we do.
if (_textBuffer.Properties.TryGetProperty<IList<ClassificationSpan>>(s_classificationsKey, out var classifications))
{
return classifications.Where(c => c.Span.IntersectsWith(span)).ToList();
}
return [];
}
}
}
}
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