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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.
Imports System
Imports System.Collections.Generic
Imports System.Collections.Immutable
Imports System.Diagnostics
Imports System.Linq
Imports Microsoft.CodeAnalysis.Text
Imports Microsoft.CodeAnalysis.VisualBasic.Symbols
Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
Namespace Microsoft.CodeAnalysis.VisualBasic.Symbols
Friend MustInherit Class LabelSymbol
Inherits Symbol
Implements ILabelSymbol
Public Sub New(name As String)
Me._name = name
End Sub
Private ReadOnly _name As String
Public Overrides ReadOnly Property Name As String
Get
Return Me._name
End Get
End Property
Public Overrides ReadOnly Property IsNotOverridable As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsMustOverride As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsOverrides As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsOverridable As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsShared As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property DeclaredAccessibility As Accessibility
Get
Return Accessibility.NotApplicable
End Get
End Property
Public Overrides ReadOnly Property Locations As ImmutableArray(Of Location)
Get
Return ImmutableArray(Of Location).Empty
End Get
End Property
Friend Overloads Overrides Function Accept(Of TArgument, TResult)(visitor As VisualBasicSymbolVisitor(Of TArgument, TResult), arg As TArgument) As TResult
Return visitor.VisitLabel(Me, arg)
End Function
Public Overridable ReadOnly Property ContainingMethod As MethodSymbol
Get
Return Nothing
End Get
End Property
Public Overrides ReadOnly Property ContainingSymbol As Symbol
Get
Return ContainingMethod
End Get
End Property
Public Overrides ReadOnly Property Kind As SymbolKind
Get
Return SymbolKind.Label
End Get
End Property
' Get the token that defined this label symbol. This is useful for robustly checking
' if a label symbol actually matches a particular definition, even in the presence of duplicates.
Friend Overridable ReadOnly Property LabelName As SyntaxToken
Get
Return Nothing
End Get
End Property
Friend NotOverridable Overrides ReadOnly Property ObsoleteAttributeData As ObsoleteAttributeData
Get
Return Nothing
End Get
End Property
#Region "ILabelSymbol"
Friend ReadOnly Property ILabelSymbol_ContainingMethod As IMethodSymbol Implements ILabelSymbol.ContainingMethod
Get
Return ContainingMethod
End Get
End Property
#End Region
#Region "ISymbol"
Public Overrides Sub Accept(visitor As SymbolVisitor)
visitor.VisitLabel(Me)
End Sub
Public Overrides Function Accept(Of TResult)(visitor As SymbolVisitor(Of TResult)) As TResult
Return visitor.VisitLabel(Me)
End Function
Public Overrides Function Accept(Of TArgument, TResult)(visitor As SymbolVisitor(Of TArgument, TResult), argument As TArgument) As TResult
Return visitor.VisitLabel(Me, argument)
End Function
Public Overrides Sub Accept(visitor As VisualBasicSymbolVisitor)
visitor.VisitLabel(Me)
End Sub
Public Overrides Function Accept(Of TResult)(visitor As VisualBasicSymbolVisitor(Of TResult)) As TResult
Return visitor.VisitLabel(Me)
End Function
#End Region
End Class
Friend Class GeneratedLabelSymbol
Inherits LabelSymbol
Public Sub New(name As String)
MyBase.New(name)
End Sub
Public Overrides ReadOnly Property DeclaringSyntaxReferences As ImmutableArray(Of SyntaxReference)
Get
Return ImmutableArray(Of SyntaxReference).Empty
End Get
End Property
End Class
Friend Class GeneratedUnstructuredExceptionHandlingResumeLabel
Inherits GeneratedLabelSymbol
''' <summary>
''' A [Resume] or [On Error Resume Next] statement.
''' </summary>
Public ReadOnly ResumeStatement As StatementSyntax
Public Sub New(resumeStmt As StatementSyntax)
MyBase.New("$VB$UnstructuredExceptionHandling_TargetResumeLabel")
Debug.Assert(resumeStmt.Kind = SyntaxKind.OnErrorResumeNextStatement OrElse
resumeStmt.Kind = SyntaxKind.ResumeNextStatement OrElse
resumeStmt.Kind = SyntaxKind.ResumeStatement)
ResumeStatement = resumeStmt
End Sub
End Class
End Namespace
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