// 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.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Text;
 
namespace Microsoft.CodeAnalysis.ExternalAccess.FSharp.DocumentHighlighting;
 
internal enum FSharpHighlightSpanKind
{
    None,
    Definition,
    Reference,
    WrittenReference,
}
 
internal readonly struct FSharpHighlightSpan
{
    public TextSpan TextSpan { get; }
    public FSharpHighlightSpanKind Kind { get; }
 
    public FSharpHighlightSpan(TextSpan textSpan, FSharpHighlightSpanKind kind) : this()
    {
        this.TextSpan = textSpan;
        this.Kind = kind;
    }
}
 
internal readonly struct FSharpDocumentHighlights
{
    public Document Document { get; }
    public ImmutableArray<FSharpHighlightSpan> HighlightSpans { get; }
 
    public FSharpDocumentHighlights(Document document, ImmutableArray<FSharpHighlightSpan> highlightSpans)
    {
        this.Document = document;
        this.HighlightSpans = highlightSpans;
    }
}
 
/// <summary>
/// Note: This is the new version of the language service and superceded the same named type
/// in the EditorFeatures layer.
/// </summary>
internal interface IFSharpDocumentHighlightsService
{
    Task<ImmutableArray<FSharpDocumentHighlights>> GetDocumentHighlightsAsync(
        Document document, int position, IImmutableSet<Document> documentsToSearch, CancellationToken cancellationToken);
}