' 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
Imports Microsoft.CodeAnalysis.Formatting
Imports Microsoft.CodeAnalysis.Options
Imports Microsoft.CodeAnalysis.PooledObjects
Imports Microsoft.CodeAnalysis.Simplification
Imports Microsoft.CodeAnalysis.Text
Imports Microsoft.CodeAnalysis.VisualBasic.Simplification.Simplifiers
Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
 
Namespace Microsoft.CodeAnalysis.VisualBasic.Simplification
    Partial Friend Class VisualBasicNameReducer
        Inherits AbstractVisualBasicReducer
 
        Private Shared ReadOnly s_pool As ObjectPool(Of IReductionRewriter) =
            New ObjectPool(Of IReductionRewriter)(Function() New Rewriter(s_pool))
 
        Private Shared ReadOnly s_simplifyName As Func(Of ExpressionSyntax, SemanticModel, SimplifierOptions, CancellationToken, SyntaxNode) = AddressOf SimplifyName
 
        Public Sub New()
            MyBase.New(s_pool)
        End Sub
 
        Public Overrides Function IsApplicable(options As VisualBasicSimplifierOptions) As Boolean
            Return True
        End Function
 
        Private Overloads Shared Function SimplifyName(
            node As ExpressionSyntax,
            semanticModel As SemanticModel,
            options As SimplifierOptions,
            cancellationToken As CancellationToken
        ) As ExpressionSyntax
 
            Dim replacementNode As ExpressionSyntax = Nothing
            Dim issueSpan As TextSpan
            If Not ExpressionSimplifier.Instance.TrySimplify(
                node, semanticModel, DirectCast(options, VisualBasicSimplifierOptions),
                replacementNode, issueSpan, cancellationToken) Then
 
                Return node
            End If
 
            node = node.CopyAnnotationsTo(replacementNode).WithAdditionalAnnotations(Formatter.Annotation)
            Return node.WithoutAnnotations(Simplifier.Annotation)
        End Function
    End Class
End Namespace