|
' 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.Globalization
Imports System.Threading
Imports Microsoft.CodeAnalysis.Text
Imports Microsoft.CodeAnalysis.VisualBasic
Imports Microsoft.CodeAnalysis.VisualBasic.Symbols
Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
Namespace Microsoft.CodeAnalysis.VisualBasic.Symbols
''' <summary>
''' This class represents synthetic WithEvents property that overrides
''' one in one of the base classes.
''' </summary>
''' <remarks>
''' When derived class contains "Handles" methods that refer to a
''' WithEvents property in a base class, derived class needs to add a
''' synthetic override for the base WithEvent property.
''' We need the override so that we could inject code sequences that
''' remove old handlers and add new handlers when something is assigned
''' to the property.
''' <example>
''' Public Class Base
''' Protected Friend WithEvents w As Base = Me
''' Public Event e As System.Action
'''
''' Sub H1() Handles w.e
''' End Sub
''' End Class
'''
''' Public Class Derived
''' Inherits Base
'''
''' Sub H2() Handles w.e
''' End Sub
''' End Class
''' </example>
''' </remarks>
Friend NotInheritable Class SynthesizedOverridingWithEventsProperty
Inherits PropertySymbol
Private ReadOnly _baseProperty As PropertySymbol
Private ReadOnly _containingType As SourceNamedTypeSymbol
Private ReadOnly _getter As SynthesizedWithEventsAccessorSymbol
Private ReadOnly _setter As SynthesizedWithEventsAccessorSymbol
Friend Sub New(baseProperty As PropertySymbol, container As SourceNamedTypeSymbol)
Me._baseProperty = baseProperty
Me._containingType = container
_getter = New SynthesizedWithEventsGetAccessorSymbol(
container,
Me)
_setter = New SynthesizedWithEventsSetAccessorSymbol(
container,
Me,
baseProperty.SetMethod.ReturnType,
valueParameterName:=StringConstants.WithEventsValueParameterName)
End Sub
Public Overrides ReadOnly Property IsWithEvents As Boolean
Get
Return True
End Get
End Property
Friend Overrides ReadOnly Property ShadowsExplicitly As Boolean
Get
'WithEvents properties shadow by name (similarly to fields).
Return True
End Get
End Property
Friend Overrides ReadOnly Property CallingConvention As Microsoft.Cci.CallingConvention
Get
Return _baseProperty.CallingConvention
End Get
End Property
Public Overrides ReadOnly Property ContainingSymbol As Symbol
Get
Return _containingType
End Get
End Property
Public Overrides ReadOnly Property ContainingType As NamedTypeSymbol
Get
Return _containingType
End Get
End Property
Public Overrides ReadOnly Property DeclaredAccessibility As Accessibility
Get
Return _baseProperty.DeclaredAccessibility
End Get
End Property
Public Overrides ReadOnly Property ExplicitInterfaceImplementations As ImmutableArray(Of PropertySymbol)
Get
Return ImmutableArray(Of PropertySymbol).Empty
End Get
End Property
Public Overrides ReadOnly Property GetMethod As MethodSymbol
Get
Return _getter
End Get
End Property
Public Overrides ReadOnly Property SetMethod As MethodSymbol
Get
Return _setter
End Get
End Property
Friend Overrides ReadOnly Property AssociatedField As FieldSymbol
Get
Return Nothing
End Get
End Property
Public Overrides ReadOnly Property IsDefault 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 IsNotOverridable As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsOverloads As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsOverridable As Boolean
Get
' override is itself overridable
Return True
End Get
End Property
Public Overrides ReadOnly Property IsOverrides As Boolean
Get
' that's the idea.
Return True
End Get
End Property
Public Overrides ReadOnly Property IsShared As Boolean
Get
' override is never shared
Return False
End Get
End Property
Friend Overrides Function GetLexicalSortKey() As LexicalSortKey
Return _containingType.GetLexicalSortKey()
End Function
Public Overrides ReadOnly Property Locations As ImmutableArray(Of Location)
Get
Return _containingType.Locations
End Get
End Property
Public Overrides ReadOnly Property Parameters As ImmutableArray(Of ParameterSymbol)
Get
Debug.Assert(_baseProperty.Parameters.IsEmpty)
Return ImmutableArray(Of ParameterSymbol).Empty
End Get
End Property
Public Overrides ReadOnly Property ParameterCount As Integer
Get
Debug.Assert(_baseProperty.ParameterCount = 0)
Return 0
End Get
End Property
Public Overrides ReadOnly Property ReturnsByRef As Boolean
Get
Return _baseProperty.ReturnsByRef
End Get
End Property
Public Overrides ReadOnly Property Type As TypeSymbol
Get
Return _baseProperty.Type
End Get
End Property
Public Overrides ReadOnly Property TypeCustomModifiers As ImmutableArray(Of CustomModifier)
Get
Return _baseProperty.TypeCustomModifiers
End Get
End Property
Public Overrides ReadOnly Property RefCustomModifiers As ImmutableArray(Of CustomModifier)
Get
Return _baseProperty.RefCustomModifiers
End Get
End Property
Public Overrides ReadOnly Property DeclaringSyntaxReferences As ImmutableArray(Of SyntaxReference)
Get
' since it is IsImplicitlyDeclared
Return ImmutableArray(Of SyntaxReference).Empty
End Get
End Property
Public Overrides ReadOnly Property Name As String
Get
Return _baseProperty.Name
End Get
End Property
Friend Overrides ReadOnly Property HasSpecialName As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsImplicitlyDeclared As Boolean
Get
Return True
End Get
End Property
Friend Overrides ReadOnly Property ObsoleteAttributeData As ObsoleteAttributeData
Get
Return Nothing
End Get
End Property
Friend Overrides ReadOnly Property IsMyGroupCollectionProperty As Boolean
Get
Return False
End Get
End Property
Public Overrides ReadOnly Property IsRequired As Boolean
Get
Return False
End Get
End Property
End Class
End Namespace
|