' 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.
 
Imports System.Threading
Imports Microsoft.CodeAnalysis.Formatting
Imports Microsoft.CodeAnalysis.Shared.Collections
Imports Microsoft.CodeAnalysis.Text
 
Namespace Microsoft.CodeAnalysis.VisualBasic.Formatting
    ''' <summary>
    ''' this holds onto changes made by formatting engine.
    ''' 
    ''' currently it only has an ability to apply those changes to buffer. but it could be expanded to
    ''' support other cases as well such as tree or etc.
    ''' </summary>
    Friend Class FormattingResult
        Inherits AbstractFormattingResult
        Implements IFormattingResult
 
        Friend Sub New(treeInfo As TreeData, tokenStream As TokenStream, spanToFormat As TextSpan)
            MyBase.New(treeInfo, tokenStream, spanToFormat)
        End Sub
 
        Protected Overrides Function Rewriter(changeMap As Dictionary(Of ValueTuple(Of SyntaxToken, SyntaxToken), TriviaData), cancellationToken As CancellationToken) As SyntaxNode
            Dim triviaRewriter = New TriviaDataFactory.TriviaRewriter(Me.TreeInfo.Root, New TextSpanMutableIntervalTree(Me.FormattedSpan), changeMap, cancellationToken)
            Return triviaRewriter.Transform()
        End Function
    End Class
End Namespace