// 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.
 
using Microsoft.CodeAnalysis.Contracts.EditAndContinue;
using Microsoft.CodeAnalysis.Text.Shared.Extensions;
using Microsoft.VisualStudio.Text;
 
namespace Microsoft.CodeAnalysis.EditAndContinue;
 
internal readonly struct ActiveStatementTrackingSpan(ITrackingSpan trackingSpan, ActiveStatementId id, ActiveStatementFlags flags, DocumentId? unmappedDocumentId)
{
    public readonly ITrackingSpan Span = trackingSpan;
    public readonly ActiveStatementId Id = id;
    public readonly ActiveStatementFlags Flags = flags;
    public readonly DocumentId? UnmappedDocumentId = unmappedDocumentId;
 
    /// <summary>
    /// True if at least one of the threads whom this active statement belongs to is in a leaf frame.
    /// </summary>
    public bool IsLeaf => (Flags & ActiveStatementFlags.LeafFrame) != 0;
 
    public static ActiveStatementTrackingSpan Create(ITextSnapshot snapshot, ActiveStatementSpan span)
        => new(snapshot.CreateTrackingSpan(snapshot.GetTextSpan(span.LineSpan).ToSpan(), SpanTrackingMode.EdgeExclusive), span.Id, span.Flags, span.UnmappedDocumentId);
}