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#Region "Microsoft.VisualBasic::ebf65ebbe1044ca1c5390f0e2c662737, Microsoft.VisualBasic.Core\Extensions\Reflection\Delegate\DelegateFactory.vb"
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#End Region
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Imports System.Collections.Generic
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Imports System.Linq
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Imports System.Linq.Expressions
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Imports System.Reflection
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Imports System.Runtime.CompilerServices
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Namespace Emit.Delegates
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Public Module DelegateFactory
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Const AddAccessor As String = "add"
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Const Item As String = "Item"
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Const RemoveAccessor As String = "remove"
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ReadOnly EventHandlerFactoryMethodInfo As MethodInfo = GetType(DelegateFactory).GetMethod("EventHandlerFactory")
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ReadOnly EventsProxies As New Dictionary(Of WeakReference(Of Object), WeakReference(Of Object))()
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Public Function Contructor(Of TDelegate As Class)() As TDelegate
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Dim source = GetFuncDelegateReturnType(Of TDelegate)()
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Dim ctrArgs = GetFuncDelegateArguments(Of TDelegate)()
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Dim constructorInfo = GetConstructorInfo(source, ctrArgs)
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If constructorInfo Is Nothing Then
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Return Nothing
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End If
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Dim parameters = ctrArgs.[Select](AddressOf Expression.Parameter).AsList()
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Return TryCast(Expression.Lambda(Expression.[New](constructorInfo, parameters), parameters).Compile(), TDelegate)
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End Function
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<Extension>
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Public Function Contructor(source As Type, ParamArray ctrArgs As Type()) As Func(Of Object(), Object)
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Dim constructorInfo = GetConstructorInfo(source, ctrArgs)
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If constructorInfo Is Nothing Then
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Return Nothing
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End If
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Dim argsArray = Expression.Parameter(GetType(Object()))
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Dim paramsExpression = New Expression(ctrArgs.Length - 1) {}
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For i As Integer = 0 To ctrArgs.Length - 1
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Dim argType = ctrArgs(i)
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paramsExpression(i) = Expression.Convert(Expression.ArrayIndex(argsArray, Expression.Constant(i)), argType)
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Next
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Dim returnExpression As Expression = Expression.[New](constructorInfo, paramsExpression)
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If Not source.IsClass Then
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returnExpression = Expression.Convert(returnExpression, GetType(Object))
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End If
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Return DirectCast(Expression.Lambda(returnExpression, argsArray).Compile(), Func(Of Object(), Object))
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End Function
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<Extension>
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Public Function Contructor(Of TDelegate As Class)(source As Type) As TDelegate
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Dim ctrArgs = GetFuncDelegateArguments(Of TDelegate)()
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Dim constructorInfo = GetConstructorInfo(source, ctrArgs)
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If constructorInfo Is Nothing Then
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Return Nothing
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End If
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Dim parameters = ctrArgs.[Select](AddressOf Expression.Parameter).AsList()
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Dim returnExpression As Expression = Expression.[New](constructorInfo, parameters)
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If Not source.IsClass Then
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returnExpression = Expression.Convert(returnExpression, GetType(Object))
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End If
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Return TryCast(Expression.Lambda(returnExpression, parameters).Compile(), TDelegate)
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End Function
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Public Function DefaultContructor(Of TSource)() As Func(Of TSource)
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Return Contructor(Of Func(Of TSource))()
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End Function
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<Extension>
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Public Function DefaultContructor(type As Type) As Func(Of Object)
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Return type.Contructor(Of Func(Of Object))()
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End Function
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Public Function DelegateIndexerGet(source As Type, returnType As Type, ParamArray indexTypes As Type()) As [Delegate]
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Dim propertyInfo = GetIndexerPropertyInfo(source, returnType, indexTypes)
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If propertyInfo.GetMethod Is Nothing Then
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Return Nothing
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End If
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Dim sourceObjectParam = Expression.Parameter(GetType(Object))
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Dim paramsExpression = New ParameterExpression(indexTypes.Length - 1) {}
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For i As Integer = 0 To indexTypes.Length - 1
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Dim indexType = indexTypes(i)
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paramsExpression(i) = Expression.Parameter(indexType)
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Next
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Return Expression.Lambda(Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.GetMethod, paramsExpression), {sourceObjectParam}.Concat(paramsExpression)).Compile()
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End Function
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Public Function DelegateIndexerSet(source As Type, returnType As Type, ParamArray indexTypes As Type()) As [Delegate]
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Dim propertyInfo = GetIndexerPropertyInfo(source, returnType, indexTypes)
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If propertyInfo.SetMethod Is Nothing Then
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Return Nothing
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End If
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Dim sourceObjectParam = Expression.Parameter(GetType(Object))
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Dim valueParam = Expression.Parameter(returnType)
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Dim indexExpressions = New ParameterExpression(indexTypes.Length - 1) {}
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For i As Integer = 0 To indexTypes.Length - 1
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Dim indexType = indexTypes(i)
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indexExpressions(i) = Expression.Parameter(indexType)
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Next
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Dim callArgs = indexExpressions.Concat({valueParam}).ToArray()
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Dim paramsExpressions = {sourceObjectParam}.Concat(callArgs)
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Return Expression.Lambda(Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.SetMethod, callArgs), paramsExpressions).Compile()
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End Function
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Public Function EventAdd(Of TSource, TEventArgs)(eventName As String) As Action(Of TSource, EventHandler(Of TEventArgs))
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Return EventAccessor(Of TSource, TEventArgs)(eventName, AddAccessor)
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End Function
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<Extension>
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Public Function EventAdd(Of TEventArgs)(source As Type, eventName As String) As Action(Of Object, EventHandler(Of TEventArgs))
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Return EventAccessor(Of TEventArgs)(source, eventName, AddAccessor)
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End Function
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Public Function EventAdd(Of TSource)(eventName As String) As Action(Of TSource, Action(Of TSource, Object))
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Return GetType(TSource).EventAddImpl(Of Action(Of TSource, Action(Of TSource, Object)))(eventName)
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End Function
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<Extension>
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Public Function EventAdd(source As Type, eventName As String) As Action(Of Object, Action(Of Object, Object))
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Return source.EventAddImpl(Of Action(Of Object, Action(Of Object, Object)))(eventName)
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End Function
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Public Function EventHandlerFactory(Of TEventArgs As Class, TSource)(handler As Object, isRemove As Boolean) As EventHandler(Of TEventArgs)
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Dim newEventHandler As EventHandler(Of TEventArgs)
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Dim haveKey = False
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Dim kv = EventsProxies.FirstOrDefault(
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Function(k)
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Dim keyTarget As Object = Nothing
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k.Key.TryGetTarget(keyTarget)
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If Equals(keyTarget, handler) Then
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haveKey = True
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Return True
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End If
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Return False
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End Function)
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If haveKey Then
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Dim fromCache As Object = Nothing
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EventsProxies(kv.Key).TryGetTarget(fromCache)
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newEventHandler = DirectCast(fromCache, EventHandler(Of TEventArgs))
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If isRemove Then
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EventsProxies.Remove(kv.Key)
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Return newEventHandler
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End If
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End If
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If Not isRemove Then
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Dim action = TryCast(handler, Action(Of TSource, Object))
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If action IsNot Nothing Then
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newEventHandler = Sub(s, a) action(DirectCast(s, TSource), a)
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Else
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newEventHandler = New EventHandler(Of TEventArgs)(AddressOf DirectCast(handler, Action(Of Object, Object)).Invoke)
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End If
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EventsProxies(New WeakReference(Of Object)(handler)) = New WeakReference(Of Object)(newEventHandler)
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Return newEventHandler
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End If
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Return Nothing
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End Function
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<Extension>
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Public Function EventRemove(Of TEventArgs)(source As Type, eventName As String) As Action(Of Object, EventHandler(Of TEventArgs))
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Return EventAccessor(Of TEventArgs)(source, eventName, RemoveAccessor)
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End Function
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Public Function EventRemove(Of TSource, TEventArgs)(eventName As String) As Action(Of TSource, EventHandler(Of TEventArgs))
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Return EventAccessor(Of TSource, TEventArgs)(eventName, RemoveAccessor)
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End Function
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Public Function EventRemove(Of TSource)(eventName As String) As Action(Of TSource, Action(Of TSource, Object))
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Return GetType(TSource).EventRemoveImpl(Of Action(Of TSource, Action(Of TSource, Object)))(eventName)
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End Function
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<Extension>
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Public Function EventRemove(source As Type, eventName As String) As Action(Of Object, Action(Of Object, Object))
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Return source.EventRemoveImpl(Of Action(Of Object, Action(Of Object, Object)))(eventName)
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End Function
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Public Function FieldGet(Of TSource, TField)(fieldName As String) As Func(Of TSource, TField)
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Dim source = GetType(TSource)
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Dim d As Object = source.FieldGet(fieldName)
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Return TryCast(d, Func(Of TSource, TField))
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End Function
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<Extension>
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Public Function FieldGet(Of TField)(source As Type, fieldName As String) As Func(Of Object, TField)
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Return TryCast(source.FieldGet(fieldName), Func(Of Object, TField))
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End Function
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<Extension>
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Public Function FieldGet(source As Type, fieldName As String) As Func(Of Object, Object)
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Dim fieldInfo = GetFieldInfo(source, fieldName)
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If fieldInfo IsNot Nothing Then
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Dim sourceParam = Expression.Parameter(GetType(Object))
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Dim returnExpression As Expression = Expression.Field(Expression.Convert(sourceParam, source), fieldInfo)
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If Not fieldInfo.FieldType.IsClass Then
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returnExpression = Expression.Convert(returnExpression, GetType(Object))
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End If
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Dim lambda = Expression.Lambda(returnExpression, sourceParam)
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Return DirectCast(lambda.Compile(), Func(Of Object, Object))
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End If
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Return Nothing
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End Function
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<Obsolete>
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<Extension>
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Public Function FieldGet2(Of TField)(source As Type, fieldName As String) As Func(Of Object, TField)
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Dim fieldInfo = GetFieldInfo(source, fieldName)
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If fieldInfo IsNot Nothing Then
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Dim sourceParam = Expression.Parameter(GetType(Object))
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Dim returnExpression As Expression = Expression.Field(Expression.Convert(sourceParam, source), fieldInfo)
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Dim lambda = Expression.Lambda(returnExpression, sourceParam)
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Return DirectCast(lambda.Compile(), Func(Of Object, TField))
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End If
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Return Nothing
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End Function
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<Extension>
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Public Function FieldSet(Of TProperty)(source As Type, fieldName As String) As Action(Of Object, TProperty)
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Dim fieldInfo As FieldInfo = GetFieldInfo(source, fieldName)
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If fieldInfo IsNot Nothing AndAlso Not fieldInfo.IsInitOnly Then
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Dim sourceParam = Expression.Parameter(GetType(Object))
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Dim valueParam = Expression.Parameter(GetType(TProperty))
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Dim target = Expression.Convert(sourceParam, source)
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Dim fieldRef = Expression.Field(target, fieldInfo)
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Dim setValue = Expression.Assign(fieldRef, valueParam) = args2
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Dim delgType As Type = GetType(Action(Of Object, TProperty))
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Dim te = Expression.Lambda(delgType, setValue, sourceParam, valueParam)
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Return DirectCast(te.Compile(), Action(Of Object, TProperty))
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End If
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Return Nothing
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End Function
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Public Function FieldSet(Of TSource, TProperty)(fieldName As String) As Action(Of TSource, TProperty)
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Dim source = GetType(TSource)
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Dim fieldInfo = GetFieldInfo(source, fieldName)
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If fieldInfo IsNot Nothing AndAlso Not fieldInfo.IsInitOnly Then
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Dim sourceParam = Expression.Parameter(source)
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Dim valueParam = Expression.Parameter(GetType(TProperty))
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Dim te = Expression.Lambda(GetType(Action(Of TSource, TProperty)), Expression.Assign(Expression.Field(sourceParam, fieldInfo), valueParam), sourceParam, valueParam)
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Return DirectCast(te.Compile(), Action(Of TSource, TProperty))
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End If
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Return Nothing
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End Function
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<Extension>
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Public Function FieldSet(source As Type, fieldName As String) As Action(Of Object, Object)
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Dim fieldInfo = GetFieldInfo(source, fieldName)
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If fieldInfo IsNot Nothing AndAlso Not fieldInfo.IsInitOnly Then
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Dim sourceParam = Expression.Parameter(GetType(Object))
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Dim valueParam = Expression.Parameter(GetType(Object))
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Dim convertedValueExpr = Expression.Convert(valueParam, fieldInfo.FieldType)
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Dim returnExpression As Expression = Expression.Assign(Expression.Field(Expression.Convert(sourceParam, source), fieldInfo), convertedValueExpr)
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If Not fieldInfo.FieldType.IsClass Then
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returnExpression = Expression.Convert(returnExpression, GetType(Object))
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End If
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Dim lambda = Expression.Lambda(GetType(Action(Of Object, Object)), returnExpression, sourceParam, valueParam)
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Return DirectCast(lambda.Compile(), Action(Of Object, Object))
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End If
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Return Nothing
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End Function
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<Obsolete>
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| 313 |
<Extension>
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Public Function FieldSetWithCast(Of TProperty)(source As Type, fieldName As String) As Action(Of Object, TProperty)
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Return TryCast(source.FieldSet(fieldName), Action(Of Object, TProperty))
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End Function
|
| 317 |
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<Obsolete>
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| 319 |
Public Function FieldSetWithCast(Of TSource, TProperty)(fieldName As String) As Action(Of TSource, TProperty)
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Return TryCast(GetType(TSource).FieldSet(fieldName), Action(Of TSource, TProperty))
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End Function
|
| 322 |
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| 323 |
Public Function IndexerGet(Of TSource, TReturn, TIndex)() As Func(Of TSource, TIndex, TReturn)
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Dim propertyInfo = GetIndexerPropertyInfo(GetType(TSource), GetType(TReturn), {GetType(TIndex)})
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Return DirectCast(propertyInfo.GetMethod.CreateDelegate(GetType(Func(Of TSource, TIndex, TReturn))), Func(Of TSource, TIndex, TReturn))
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End Function
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| 328 |
Public Function IndexerGet(Of TSource, TReturn, TIndex, TIndex2)() As Func(Of TSource, TIndex, TIndex2, TReturn)
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Dim propertyInfo = GetIndexerPropertyInfo(GetType(TSource), GetType(TReturn), {GetType(TIndex), GetType(TIndex2)})
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Return DirectCast(propertyInfo.GetMethod.CreateDelegate(GetType(Func(Of TSource, TIndex, TIndex2, TReturn))), Func(Of TSource, TIndex, TIndex2, TReturn))
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| 331 |
End Function
|
| 332 |
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Public Function IndexerGet(Of TSource, TReturn, TIndex, TIndex2, TIndex3)() As Func(Of TSource, TIndex, TIndex2, TIndex2, TReturn)
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Dim propertyInfo = GetIndexerPropertyInfo(GetType(TSource), GetType(TReturn), {GetType(TIndex), GetType(TIndex2), GetType(TIndex3)})
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Return DirectCast(propertyInfo.GetMethod.CreateDelegate(GetType(Func(Of TSource, TIndex, TIndex2, TIndex2, TReturn))), Func(Of TSource, TIndex, TIndex2, TIndex2, TReturn))
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| 336 |
End Function
|
| 337 |
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| 338 |
<Extension>
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| 339 |
Public Function IndexerGet(Of TReturn, TIndex)(source As Type) As Func(Of Object, TIndex, TReturn)
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Dim indexType = GetType(TIndex)
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Return DirectCast(DelegateIndexerGet(source, GetType(TReturn), indexType), Func(Of Object, TIndex, TReturn))
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| 342 |
End Function
|
| 343 |
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| 344 |
<Extension>
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| 345 |
Public Function IndexerGet(Of TReturn, TIndex, TIndex2)(source As Type) As Func(Of Object, TIndex, TIndex2, TReturn)
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| 346 |
Dim indexType = GetType(TIndex)
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| 347 |
Dim indexType2 = GetType(TIndex2)
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| 348 |
Return DirectCast(DelegateIndexerGet(source, GetType(TReturn), indexType, indexType2), Func(Of Object, TIndex, TIndex2, TReturn))
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| 349 |
End Function
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| 350 |
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| 351 |
<Extension>
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| 352 |
Public Function IndexerGet(Of TReturn, TIndex, TIndex2, TIndex3)(source As Type) As Func(Of Object, TIndex, TIndex2, TIndex3, TReturn)
|
| 353 |
Dim indexType = GetType(TIndex)
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| 354 |
Dim indexType2 = GetType(TIndex2)
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| 355 |
Dim indexType3 = GetType(TIndex3)
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| 356 |
Return DirectCast(DelegateIndexerGet(source, GetType(TReturn), indexType, indexType2, indexType3), Func(Of Object, TIndex, TIndex2, TIndex3, TReturn))
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| 357 |
End Function
|
| 358 |
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| 359 |
<Extension>
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| 360 |
Public Function IndexerGet(source As Type, returnType As Type, ParamArray indexTypes As Type()) As Func(Of Object, Object(), Object)
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| 361 |
Dim propertyInfo = GetIndexerPropertyInfo(source, returnType, indexTypes)
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| 362 |
If propertyInfo.GetMethod Is Nothing Then
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| 363 |
Return Nothing
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| 364 |
End If
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| 365 |
Dim sourceObjectParam = Expression.Parameter(GetType(Object))
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| 366 |
Dim indexesParam = Expression.Parameter(GetType(Object()))
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| 367 |
Dim paramsExpression = New Expression(indexTypes.Length - 1) {}
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| 368 |
For i As Integer = 0 To indexTypes.Length - 1
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| 369 |
Dim indexType = indexTypes(i)
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| 370 |
paramsExpression(i) = Expression.Convert(Expression.ArrayIndex(indexesParam, Expression.Constant(i)), indexType)
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| 371 |
Next
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| 372 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.GetMethod, paramsExpression)
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| 373 |
If Not propertyInfo.PropertyType.IsClass Then
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| 374 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
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| 375 |
End If
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| 376 |
Return DirectCast(Expression.Lambda(returnExpression, sourceObjectParam, indexesParam).Compile(), Func(Of Object, Object(), Object))
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| 377 |
End Function
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| 378 |
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| 379 |
<Extension>
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| 380 |
Public Function IndexerGet(source As Type, returnType As Type, indexType As Type) As Func(Of Object, Object, Object)
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| 381 |
Dim propertyInfo = GetIndexerPropertyInfo(source, returnType, {indexType})
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| 382 |
If propertyInfo.GetMethod Is Nothing Then
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Return Nothing
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| 384 |
End If
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| 385 |
Dim sourceObjectParam = Expression.Parameter(GetType(Object))
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| 386 |
Dim indexObjectParam = Expression.Parameter(GetType(Object))
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| 387 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.GetMethod, Expression.Convert(indexObjectParam, indexType))
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| 388 |
If Not propertyInfo.PropertyType.IsClass Then
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| 389 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
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| 390 |
End If
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| 391 |
Return DirectCast(Expression.Lambda(returnExpression, sourceObjectParam, indexObjectParam).Compile(), Func(Of Object, Object, Object))
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| 392 |
End Function
|
| 393 |
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| 394 |
<Extension>
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| 395 |
Public Function IndexerSet(Of TReturn, TIndex)(source As Type) As Action(Of Object, TIndex, TReturn)
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| 396 |
Dim indexType = GetType(TIndex)
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| 397 |
Return DirectCast(DelegateIndexerSet(source, GetType(TReturn), indexType), Action(Of Object, TIndex, TReturn))
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End Function
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| 399 |
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<Extension>
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| 401 |
Public Function IndexerSet(Of TReturn, TIndex, TIndex2)(source As Type) As Action(Of Object, TIndex, TIndex2, TReturn)
|
| 402 |
Dim indexType = GetType(TIndex)
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| 403 |
Dim indexType2 = GetType(TIndex2)
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| 404 |
Return DirectCast(DelegateIndexerSet(source, GetType(TReturn), indexType, indexType2), Action(Of Object, TIndex, TIndex2, TReturn))
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| 405 |
End Function
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| 406 |
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| 407 |
<Extension>
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| 408 |
Public Function IndexerSet(Of TReturn, TIndex, TIndex2, TIndex3)(source As Type) As Action(Of Object, TIndex, TIndex2, TIndex3, TReturn)
|
| 409 |
Dim indexType = GetType(TIndex)
|
| 410 |
Dim indexType2 = GetType(TIndex2)
|
| 411 |
Dim indexType3 = GetType(TIndex3)
|
| 412 |
Return DirectCast(DelegateIndexerSet(source, GetType(TReturn), indexType, indexType2, indexType3), Action(Of Object, TIndex, TIndex2, TIndex3, TReturn))
|
| 413 |
End Function
|
| 414 |
|
| 415 |
Public Function IndexerSet(Of TSource, TIndex, TProperty)() As Action(Of TSource, TIndex, TProperty)
|
| 416 |
Dim sourceType = GetType(TSource)
|
| 417 |
Dim propertyInfo = GetIndexerPropertyInfo(sourceType, GetType(TProperty), {GetType(TIndex)})
|
| 418 |
Return DirectCast(propertyInfo.SetMethod.CreateDelegate(GetType(Action(Of TSource, TIndex, TProperty))), Action(Of TSource, TIndex, TProperty))
|
| 419 |
End Function
|
| 420 |
|
| 421 |
Public Function IndexerSet(Of TSource, TReturn, TIndex, TIndex2)() As Action(Of TSource, TIndex, TIndex2, TReturn)
|
| 422 |
Dim propertyInfo = GetIndexerPropertyInfo(GetType(TSource), GetType(TReturn), {GetType(TIndex), GetType(TIndex2)})
|
| 423 |
Return DirectCast(propertyInfo.SetMethod.CreateDelegate(GetType(Action(Of TSource, TIndex, TIndex2, TReturn))), Action(Of TSource, TIndex, TIndex2, TReturn))
|
| 424 |
End Function
|
| 425 |
|
| 426 |
Public Function IndexerSet(Of TSource, TReturn, TIndex, TIndex2, TIndex3)() As Action(Of TSource, TIndex, TIndex2, TIndex2, TReturn)
|
| 427 |
Dim propertyInfo = GetIndexerPropertyInfo(GetType(TSource), GetType(TReturn), {GetType(TIndex), GetType(TIndex2), GetType(TIndex3)})
|
| 428 |
Return DirectCast(propertyInfo.SetMethod.CreateDelegate(GetType(Action(Of TSource, TIndex, TIndex2, TIndex2, TReturn))), Action(Of TSource, TIndex, TIndex2, TIndex2, TReturn))
|
| 429 |
End Function
|
| 430 |
|
| 431 |
<Extension>
|
| 432 |
Public Function IndexerSet(source As Type, returnType As Type, ParamArray indexTypes As Type()) As Action(Of Object, Object(), Object)
|
| 433 |
Dim propertyInfo = GetIndexerPropertyInfo(source, returnType, indexTypes)
|
| 434 |
If propertyInfo.SetMethod Is Nothing Then
|
| 435 |
Return Nothing
|
| 436 |
End If
|
| 437 |
Dim sourceObjectParam = Expression.Parameter(GetType(Object))
|
| 438 |
Dim indexesParam = Expression.Parameter(GetType(Object()))
|
| 439 |
Dim valueParam = Expression.Parameter(GetType(Object))
|
| 440 |
Dim paramsExpression = New Expression(indexTypes.Length) {}
|
| 441 |
For i As Integer = 0 To indexTypes.Length - 1
|
| 442 |
Dim indexType = indexTypes(i)
|
| 443 |
paramsExpression(i) = Expression.Convert(Expression.ArrayIndex(indexesParam, Expression.Constant(i)), indexType)
|
| 444 |
Next
|
| 445 |
paramsExpression(indexTypes.Length) = Expression.Convert(valueParam, returnType)
|
| 446 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.SetMethod, paramsExpression)
|
| 447 |
Return DirectCast(Expression.Lambda(returnExpression, sourceObjectParam, indexesParam, valueParam).Compile(), Action(Of Object, Object(), Object))
|
| 448 |
End Function
|
| 449 |
|
| 450 |
<Extension>
|
| 451 |
Public Function InstanceGenericMethod(source As Type, name As String, paramsTypes As Type(), typeParams As Type()) As Func(Of Object, Object(), Object)
|
| 452 |
Return InstanceGenericMethod(Of Func(Of Object, Object(), Object))(source, name, typeParams, paramsTypes)
|
| 453 |
End Function
|
| 454 |
|
| 455 |
<Extension>
|
| 456 |
Public Function InstanceGenericMethod(Of TDelegate As Class)(source As Type, name As String, typeParams As Type(), paramsTypes As Type()) As TDelegate
|
| 457 |
Dim methodInfo = GetMethodInfo(source, name, paramsTypes, typeParams)
|
| 458 |
If methodInfo Is Nothing Then
|
| 459 |
Return Nothing
|
| 460 |
End If
|
| 461 |
Dim argsArray = Expression.Parameter(GetType(Object()))
|
| 462 |
Dim sourceParameter = Expression.Parameter(GetType(Object))
|
| 463 |
Dim paramsExpression = New Expression(paramsTypes.Length - 1) {}
|
| 464 |
For i As Integer = 0 To paramsTypes.Length - 1
|
| 465 |
Dim argType = paramsTypes(i)
|
| 466 |
paramsExpression(i) = Expression.Convert(Expression.ArrayIndex(argsArray, Expression.Constant(i)), argType)
|
| 467 |
Next
|
| 468 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceParameter, source), methodInfo, paramsExpression)
|
| 469 |
If methodInfo.ReturnType IsNot GetType(System.Void) AndAlso Not methodInfo.ReturnType.IsClass Then
|
| 470 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 471 |
End If
|
| 472 |
Return TryCast(Expression.Lambda(returnExpression, sourceParameter, argsArray).Compile(), TDelegate)
|
| 473 |
End Function
|
| 474 |
|
| 475 |
<Extension>
|
| 476 |
Public Function InstanceGenericMethodVoid(source As Type, name As String, paramsTypes As Type(), typeParams As Type()) As Action(Of Object, Object())
|
| 477 |
Return InstanceGenericMethod(Of Action(Of Object, Object()))(source, name, typeParams, paramsTypes)
|
| 478 |
End Function
|
| 479 |
|
| 480 |
<Extension>
|
| 481 |
Public Function InstanceMethod(source As Type, name As String, ParamArray paramsTypes As Type()) As Func(Of Object, Object(), Object)
|
| 482 |
Return InstanceGenericMethod(Of Func(Of Object, Object(), Object))(source, name, Nothing, paramsTypes)
|
| 483 |
End Function
|
| 484 |
|
| 485 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1)(name As String) As TDelegate
|
| 486 |
Return InstanceMethod(Of TDelegate)(name, GetType(TParam1))
|
| 487 |
End Function
|
| 488 |
|
| 489 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1, TParam2)(name As String) As TDelegate
|
| 490 |
Return InstanceMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2))
|
| 491 |
End Function
|
| 492 |
|
| 493 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1, TParam2, TParam3)(name As String) As TDelegate
|
| 494 |
Return InstanceMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2), GetType(TParam3))
|
| 495 |
End Function
|
| 496 |
|
| 497 |
Public Function InstanceMethod(Of TDelegate As Class)(name As String, ParamArray typeParameters As Type()) As TDelegate
|
| 498 |
Dim paramsTypes = GetFuncDelegateArguments(Of TDelegate)()
|
| 499 |
Dim source = paramsTypes.First()
|
| 500 |
paramsTypes = paramsTypes.Skip(1).ToArray()
|
| 501 |
Dim methodInfo = GetMethodInfo(source, name, paramsTypes, typeParameters)
|
| 502 |
Return TryCast(methodInfo.CreateDelegate(GetType(TDelegate)), TDelegate)
|
| 503 |
End Function
|
| 504 |
|
| 505 |
<Extension>
|
| 506 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1)(source As Type, name As String) As TDelegate
|
| 507 |
Return source.InstanceMethod(Of TDelegate)(name, {GetType(TParam1)})
|
| 508 |
End Function
|
| 509 |
|
| 510 |
<Extension>
|
| 511 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1, TParam2)(source As Type, name As String) As TDelegate
|
| 512 |
Return source.InstanceMethod(Of TDelegate)(name, {GetType(TParam1), GetType(TParam2)})
|
| 513 |
End Function
|
| 514 |
|
| 515 |
<Extension>
|
| 516 |
Public Function InstanceMethod(Of TDelegate As Class, TParam1, TParam2, TParam3)(source As Type, name As String) As TDelegate
|
| 517 |
Return source.InstanceMethod(Of TDelegate)(name, {GetType(TParam1), GetType(TParam2), GetType(TParam3)})
|
| 518 |
End Function
|
| 519 |
|
| 520 |
<Extension>
|
| 521 |
Public Function InstanceMethod(Of TDelegate As Class)(source As Type, name As String, Optional typeParams As Type() = Nothing) As TDelegate
|
| 522 |
Dim delegateParams = GetFuncDelegateArguments(Of TDelegate)()
|
| 523 |
Dim instanceParam = delegateParams(0)
|
| 524 |
delegateParams = delegateParams.Skip(1).ToArray()
|
| 525 |
Dim methodInfo = GetMethodInfo(source, name, delegateParams, typeParams)
|
| 526 |
If methodInfo Is Nothing Then
|
| 527 |
Return Nothing
|
| 528 |
End If
|
| 529 |
Dim deleg As [Delegate]
|
| 530 |
If instanceParam Is source Then
|
| 531 |
deleg = methodInfo.CreateDelegate(GetType(TDelegate))
|
| 532 |
Else
|
| 533 |
Dim sourceParameter = Expression.Parameter(GetType(Object))
|
| 534 |
Dim expressions = delegateParams.[Select](AddressOf Expression.Parameter).ToArray()
|
| 535 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceParameter, source), methodInfo, expressions.Cast(Of Expression)())
|
| 536 |
If methodInfo.ReturnType IsNot GetType(System.Void) AndAlso Not methodInfo.ReturnType.IsClass Then
|
| 537 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 538 |
End If
|
| 539 |
Dim lamdaParams = {sourceParameter}.Concat(expressions)
|
| 540 |
deleg = Expression.Lambda(returnExpression, lamdaParams).Compile()
|
| 541 |
End If
|
| 542 |
Return TryCast(deleg, TDelegate)
|
| 543 |
End Function
|
| 544 |
|
| 545 |
Public Function InstanceMethod2(Of TDelegate As Class)(methodName As String) As TDelegate
|
| 546 |
Dim source = GetType(TDelegate).GenericTypeArguments(0)
|
| 547 |
Dim param = Expression.Parameter(source)
|
| 548 |
Dim parameters = New List(Of ParameterExpression)() From {
|
| 549 |
param
|
| 550 |
}
|
| 551 |
Dim params = GetFuncDelegateArguments(Of TDelegate)().Skip(1)
|
| 552 |
For Each type In params
|
| 553 |
parameters.Add(Expression.Parameter(type))
|
| 554 |
Next
|
| 555 |
Dim te = Expression.Lambda(Expression.[Call](param, methodName, Nothing, parameters.Skip(1).Cast(Of Expression)().ToArray()), parameters)
|
| 556 |
Return TryCast(te.Compile(), TDelegate)
|
| 557 |
End Function
|
| 558 |
|
| 559 |
<Extension>
|
| 560 |
Public Function InstanceMethodVoid(source As Type, name As String, ParamArray paramsTypes As Type()) As Action(Of Object, Object())
|
| 561 |
Return InstanceGenericMethod(Of Action(Of Object, Object()))(source, name, Nothing, paramsTypes)
|
| 562 |
End Function
|
| 563 |
|
| 564 |
<Extension>
|
| 565 |
Public Function PropertyGet(Of TProperty)(source As Type, propertyName As String) As Func(Of Object, TProperty)
|
| 566 |
Return TryCast(source.PropertyGet(propertyName), Func(Of Object, TProperty))
|
| 567 |
End Function
|
| 568 |
|
| 569 |
<Extension>
|
| 570 |
Public Function PropertyGet(source As Type, propertyName As String) As Func(Of Object, Object)
|
| 571 |
Dim propertyInfo = GetPropertyInfo(source, propertyName)
|
| 572 |
If propertyInfo.GetMethod Is Nothing Then
|
| 573 |
Return Nothing
|
| 574 |
Else
|
| 575 |
Return source.PropertyGet(propertyInfo)
|
| 576 |
End If
|
| 577 |
End Function
|
| 578 |
|
| 579 |
<Extension>
|
| 580 |
Public Function PropertyGet(source As Type, [propertyInfo] As PropertyInfo) As Func(Of Object, Object)
|
| 581 |
Dim sourceObjectParam = Expression.Parameter(GetType(Object))
|
| 582 |
Dim returnExpression As Expression = Expression.[Call](Expression.Convert(sourceObjectParam, source), propertyInfo.GetMethod)
|
| 583 |
If Not propertyInfo.PropertyType.IsClass Then
|
| 584 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 585 |
End If
|
| 586 |
Return DirectCast(Expression.Lambda(returnExpression, sourceObjectParam).Compile(), Func(Of Object, Object))
|
| 587 |
End Function
|
| 588 |
|
| 589 |
<Extension> Public Function PropertyGet(Of TSource, TProperty)(propertyInfo As PropertyInfo) As Func(Of TSource, TProperty)
|
| 590 |
Return PropertyGet(Of TSource, TProperty)(Nothing, propertyInfo)
|
| 591 |
End Function
|
| 592 |
|
| 593 |
Public Function PropertyGet(Of TSource, TProperty)(propertyName As String) As Func(Of TSource, TProperty)
|
| 594 |
Return PropertyGet(Of TSource, TProperty)(propertyName, Nothing)
|
| 595 |
End Function
|
| 596 |
|
| 597 |
<Obsolete>
|
| 598 |
<Extension>
|
| 599 |
Public Function PropertyGet2(Of TSource, TProperty)(source As Type, propertyName As String) As Func(Of TSource, TProperty)
|
| 600 |
Dim p = Expression.Parameter(source)
|
| 601 |
Dim te = Expression.Lambda(Expression.[Property](p, propertyName), p)
|
| 602 |
Return DirectCast(te.Compile(), Func(Of TSource, TProperty))
|
| 603 |
End Function
|
| 604 |
|
| 605 |
<Extension>
|
| 606 |
Public Function PropertySet(Of TSource, TProperty)(source As TSource, propertyName As String) As Action(Of TSource, TProperty)
|
| 607 |
Return PropertySet(Of TSource, TProperty)(propertyName)
|
| 608 |
End Function
|
| 609 |
|
| 610 |
|
| 611 |
|
| 612 |
|
| 613 |
|
| 614 |
|
| 615 |
|
| 616 |
|
| 617 |
<Extension>
|
| 618 |
Public Function PropertySet(Of TProperty)(source As Type, propertyName As String) As Action(Of Object, TProperty)
|
| 619 |
Dim propertyInfo = GetPropertyInfo(source, propertyName)
|
| 620 |
If propertyInfo.SetMethod Is Nothing Then
|
| 621 |
Return Nothing
|
| 622 |
End If
|
| 623 |
Dim sourceObjectParam = Expression.Parameter(GetType(Object))
|
| 624 |
Dim propertyValueParam As ParameterExpression
|
| 625 |
Dim valueExpression As Expression
|
| 626 |
If propertyInfo.PropertyType Is GetType(TProperty) Then
|
| 627 |
propertyValueParam = Expression.Parameter(propertyInfo.PropertyType)
|
| 628 |
valueExpression = propertyValueParam
|
| 629 |
Else
|
| 630 |
propertyValueParam = Expression.Parameter(GetType(TProperty))
|
| 631 |
valueExpression = Expression.Convert(propertyValueParam, propertyInfo.PropertyType)
|
| 632 |
End If
|
| 633 |
|
| 634 |
Dim method = Expression.Lambda(
|
| 635 |
Expression.[Call](
|
| 636 |
Expression.Convert(sourceObjectParam, source),
|
| 637 |
propertyInfo.SetMethod,
|
| 638 |
valueExpression),
|
| 639 |
sourceObjectParam,
|
| 640 |
propertyValueParam).Compile()
|
| 641 |
|
| 642 |
Return DirectCast(method, Action(Of Object, TProperty))
|
| 643 |
End Function
|
| 644 |
|
| 645 |
<Extension>
|
| 646 |
Public Function PropertySet(source As Type, propertyName As String) As Action(Of Object, Object)
|
| 647 |
Return source.PropertySet(Of Object)(propertyName)
|
| 648 |
End Function
|
| 649 |
|
| 650 |
Public Function PropertySet(Of TSource, TProperty)(propertyName As String) As Action(Of TSource, TProperty)
|
| 651 |
Dim source = GetType(TSource)
|
| 652 |
Dim propertyInfo = GetPropertyInfo(source, propertyName)
|
| 653 |
Return DirectCast(propertyInfo.SetMethod.CreateDelegate(GetType(Action(Of TSource, TProperty))), Action(Of TSource, TProperty))
|
| 654 |
End Function
|
| 655 |
|
| 656 |
<Extension>
|
| 657 |
Public Function StaticEventAdd(Of TEvent)(source As Type, eventName As String) As Action(Of EventHandler(Of TEvent))
|
| 658 |
Dim eventInfo = source.GetEvent(eventName)
|
| 659 |
If eventInfo Is Nothing Then
|
| 660 |
eventInfo = source.GetEvent(eventName, BindingFlags.NonPublic)
|
| 661 |
End If
|
| 662 |
If eventInfo Is Nothing Then
|
| 663 |
eventInfo = source.GetEvent(eventName, BindingFlags.NonPublic Or BindingFlags.[Public])
|
| 664 |
End If
|
| 665 |
Return DirectCast(eventInfo.AddMethod.CreateDelegate(GetType(Action(Of EventHandler(Of TEvent)))), Action(Of EventHandler(Of TEvent)))
|
| 666 |
End Function
|
| 667 |
|
| 668 |
Public Function StaticFieldGet(Of TSource, TField)(fieldName As String) As Func(Of TField)
|
| 669 |
Dim source = GetType(TSource)
|
| 670 |
Return source.StaticFieldGet(Of TField)(fieldName)
|
| 671 |
End Function
|
| 672 |
|
| 673 |
<Extension>
|
| 674 |
Public Function StaticFieldGet(Of TField)(source As Type, fieldName As String) As Func(Of TField)
|
| 675 |
Dim fieldInfo = GetStaticFieldInfo(source, fieldName)
|
| 676 |
If fieldInfo IsNot Nothing Then
|
| 677 |
Dim lambda = Expression.Lambda(Expression.Field(Nothing, fieldInfo))
|
| 678 |
Return DirectCast(lambda.Compile(), Func(Of TField))
|
| 679 |
End If
|
| 680 |
Return Nothing
|
| 681 |
End Function
|
| 682 |
|
| 683 |
<Extension>
|
| 684 |
Public Function StaticFieldGet(source As Type, fieldName As String) As Func(Of Object)
|
| 685 |
Dim fieldInfo = GetStaticFieldInfo(source, fieldName)
|
| 686 |
If fieldInfo IsNot Nothing Then
|
| 687 |
Dim returnExpression As Expression = Expression.Field(Nothing, fieldInfo)
|
| 688 |
If Not fieldInfo.FieldType.IsClass Then
|
| 689 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 690 |
End If
|
| 691 |
Dim lambda = Expression.Lambda(returnExpression)
|
| 692 |
Return DirectCast(lambda.Compile(), Func(Of Object))
|
| 693 |
End If
|
| 694 |
Return Nothing
|
| 695 |
End Function
|
| 696 |
|
| 697 |
<Obsolete>
|
| 698 |
Public Function StaticFieldGetExpr(Of TSource, TField)(fieldName As String) As Func(Of TField)
|
| 699 |
Dim source = GetType(TSource)
|
| 700 |
Dim lambda = Expression.Lambda(Expression.Field(Nothing, source, fieldName))
|
| 701 |
Return DirectCast(lambda.Compile(), Func(Of TField))
|
| 702 |
End Function
|
| 703 |
|
| 704 |
Public Function StaticFieldSet(Of TSource, TField)(fieldName As String) As Action(Of TField)
|
| 705 |
Dim source = GetType(TSource)
|
| 706 |
Return source.StaticFieldSet(Of TField)(fieldName)
|
| 707 |
End Function
|
| 708 |
|
| 709 |
<Extension>
|
| 710 |
Public Function StaticFieldSet(Of TField)(source As Type, fieldName As String) As Action(Of TField)
|
| 711 |
Dim fieldInfo = GetStaticFieldInfo(source, fieldName)
|
| 712 |
If fieldInfo IsNot Nothing Then
|
| 713 |
Dim valueParam = Expression.Parameter(GetType(TField))
|
| 714 |
Dim lambda = Expression.Lambda(GetType(Action(Of TField)), Expression.Assign(Expression.Field(Nothing, fieldInfo), valueParam), valueParam)
|
| 715 |
Return DirectCast(lambda.Compile(), Action(Of TField))
|
| 716 |
End If
|
| 717 |
Return Nothing
|
| 718 |
End Function
|
| 719 |
|
| 720 |
<Extension>
|
| 721 |
Public Function StaticFieldSet(source As Type, fieldName As String) As Action(Of Object)
|
| 722 |
Dim fieldInfo = GetStaticFieldInfo(source, fieldName)
|
| 723 |
If fieldInfo IsNot Nothing AndAlso Not fieldInfo.IsInitOnly Then
|
| 724 |
Dim valueParam = Expression.Parameter(GetType(Object))
|
| 725 |
Dim convertedValueExpr = Expression.Convert(valueParam, fieldInfo.FieldType)
|
| 726 |
Dim lambda = Expression.Lambda(GetType(Action(Of Object)), Expression.Assign(Expression.Field(Nothing, fieldInfo), convertedValueExpr), valueParam)
|
| 727 |
Return DirectCast(lambda.Compile(), Action(Of Object))
|
| 728 |
End If
|
| 729 |
Return Nothing
|
| 730 |
End Function
|
| 731 |
|
| 732 |
<Extension>
|
| 733 |
Public Function StaticGenericMethod(source As Type, name As String, paramsTypes As Type(), typeParams As Type()) As Func(Of Object(), Object)
|
| 734 |
Return StaticMethod(Of Func(Of Object(), Object))(source, name, typeParams, paramsTypes)
|
| 735 |
End Function
|
| 736 |
|
| 737 |
<Extension>
|
| 738 |
Public Function StaticGenericMethodVoid(source As Type, name As String, paramsTypes As Type(), typeParams As Type()) As Action(Of Object())
|
| 739 |
Return StaticMethod(Of Action(Of Object()))(source, name, typeParams, paramsTypes)
|
| 740 |
End Function
|
| 741 |
|
| 742 |
Public Function StaticMethod(Of TSource, TDelegate As Class)(name As String) As TDelegate
|
| 743 |
Return GetType(TSource).StaticMethod(Of TDelegate)(name)
|
| 744 |
End Function
|
| 745 |
|
| 746 |
Public Function StaticMethod(Of TSource, TDelegate As Class, TParam1)(name As String) As TDelegate
|
| 747 |
Return GetType(TSource).StaticMethod(Of TDelegate)(name, GetType(TParam1))
|
| 748 |
End Function
|
| 749 |
|
| 750 |
Public Function StaticMethod(Of TSource, TDelegate As Class, TParam1, TParam2)(name As String) As TDelegate
|
| 751 |
Return GetType(TSource).StaticMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2))
|
| 752 |
End Function
|
| 753 |
|
| 754 |
Public Function StaticMethod(Of TSource, TDelegate As Class, TParam1, TParam2, TParam3)(name As String) As TDelegate
|
| 755 |
Return GetType(TSource).StaticMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2), GetType(TParam3))
|
| 756 |
End Function
|
| 757 |
|
| 758 |
Public Function StaticMethod(Of TSource, TDelegate As Class)(name As String, ParamArray typeParameters As Type()) As TDelegate
|
| 759 |
Return GetType(TSource).StaticMethod(Of TDelegate)(name, typeParameters)
|
| 760 |
End Function
|
| 761 |
|
| 762 |
<Extension>
|
| 763 |
Public Function StaticMethod(Of TDelegate As Class, TParam1)(source As Type, name As String) As TDelegate
|
| 764 |
Return source.StaticMethod(Of TDelegate)(name, GetType(TParam1))
|
| 765 |
End Function
|
| 766 |
|
| 767 |
<Extension>
|
| 768 |
Public Function StaticMethod(Of TDelegate As Class, TParam1, TParam2)(source As Type, name As String) As TDelegate
|
| 769 |
Return source.StaticMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2))
|
| 770 |
End Function
|
| 771 |
|
| 772 |
<Extension>
|
| 773 |
Public Function StaticMethod(Of TDelegate As Class, TParam1, TParam2, TParam3)(source As Type, name As String) As TDelegate
|
| 774 |
Return source.StaticMethod(Of TDelegate)(name, GetType(TParam1), GetType(TParam2), GetType(TParam3))
|
| 775 |
End Function
|
| 776 |
|
| 777 |
<Extension>
|
| 778 |
Public Function StaticMethod(Of TDelegate As Class)(source As Type, name As String, ParamArray typeParameters As Type()) As TDelegate
|
| 779 |
Dim paramsTypes = GetFuncDelegateArguments(Of TDelegate)()
|
| 780 |
Dim methodInfo = GetStaticMethodInfo(source, name, paramsTypes, typeParameters)
|
| 781 |
Return TryCast(methodInfo.CreateDelegate(GetType(TDelegate)), TDelegate)
|
| 782 |
End Function
|
| 783 |
|
| 784 |
<Extension>
|
| 785 |
Public Function StaticMethod(Of TDelegate As Class)(source As Type, name As String) As TDelegate
|
| 786 |
Return source.StaticMethod(Of TDelegate)(name, Nothing)
|
| 787 |
End Function
|
| 788 |
|
| 789 |
<Extension>
|
| 790 |
Public Function StaticMethod(source As Type, name As String, ParamArray paramsTypes As Type()) As Func(Of Object(), Object)
|
| 791 |
Return StaticMethod(Of Func(Of Object(), Object))(source, name, Nothing, paramsTypes)
|
| 792 |
End Function
|
| 793 |
|
| 794 |
<Extension>
|
| 795 |
Public Function StaticMethod(Of TDelegate As Class)(source As Type, name As String, typeParams As Type(), paramsTypes As Type()) As TDelegate
|
| 796 |
Dim methodInfo = GetStaticMethodInfo(source, name, paramsTypes, typeParams)
|
| 797 |
If methodInfo Is Nothing Then
|
| 798 |
Return Nothing
|
| 799 |
End If
|
| 800 |
Dim argsArray = Expression.Parameter(GetType(Object()))
|
| 801 |
Dim paramsExpression = New Expression(paramsTypes.Length - 1) {}
|
| 802 |
For i As Integer = 0 To paramsTypes.Length - 1
|
| 803 |
Dim argType = paramsTypes(i)
|
| 804 |
paramsExpression(i) = Expression.Convert(Expression.ArrayIndex(argsArray, Expression.Constant(i)), argType)
|
| 805 |
Next
|
| 806 |
Dim returnExpression As Expression = Expression.[Call](methodInfo, paramsExpression)
|
| 807 |
If methodInfo.ReturnType IsNot GetType(System.Void) AndAlso Not methodInfo.ReturnType.IsClass Then
|
| 808 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 809 |
End If
|
| 810 |
Return TryCast(Expression.Lambda(returnExpression, argsArray).Compile(), TDelegate)
|
| 811 |
End Function
|
| 812 |
|
| 813 |
<Extension>
|
| 814 |
Public Function StaticMethodVoid(source As Type, name As String, ParamArray paramsTypes As Type()) As Action(Of Object())
|
| 815 |
Return StaticMethod(Of Action(Of Object()))(source, name, Nothing, paramsTypes)
|
| 816 |
End Function
|
| 817 |
|
| 818 |
Public Function StaticPropertyGet(Of TSource, TProperty)(propertyName As String) As Func(Of TProperty)
|
| 819 |
Return GetType(TSource).StaticPropertyGet(Of TProperty)(propertyName)
|
| 820 |
End Function
|
| 821 |
|
| 822 |
<Extension>
|
| 823 |
Public Function StaticPropertyGet(Of TProperty)(source As Type, propertyName As String) As Func(Of TProperty)
|
| 824 |
Dim propertyInfo = GetStaticPropertyInfo(source, propertyName)
|
| 825 |
Return DirectCast(propertyInfo.GetMethod.CreateDelegate(GetType(Func(Of TProperty))), Func(Of TProperty))
|
| 826 |
End Function
|
| 827 |
|
| 828 |
<Extension>
|
| 829 |
Public Function StaticPropertyGet(source As Type, propertyName As String) As Func(Of Object)
|
| 830 |
Dim propertyInfo = GetStaticPropertyInfo(source, propertyName)
|
| 831 |
If propertyInfo.GetMethod Is Nothing Then
|
| 832 |
Return Nothing
|
| 833 |
End If
|
| 834 |
Dim returnExpression As Expression = Expression.[Call](propertyInfo.GetMethod)
|
| 835 |
If Not propertyInfo.PropertyType.IsClass Then
|
| 836 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 837 |
End If
|
| 838 |
Return DirectCast(Expression.Lambda(returnExpression).Compile(), Func(Of Object))
|
| 839 |
End Function
|
| 840 |
|
| 841 |
<Obsolete>
|
| 842 |
<Extension>
|
| 843 |
Public Function StaticPropertyGet2(Of TProperty)(source As Type, propertyName As String) As Func(Of TProperty)
|
| 844 |
Dim te = Expression.Lambda(Expression.[Property](Nothing, source, propertyName))
|
| 845 |
Return DirectCast(te.Compile(), Func(Of TProperty))
|
| 846 |
End Function
|
| 847 |
|
| 848 |
Public Function StaticPropertySet(Of TSource, TProperty)(propertyName As String) As Action(Of TProperty)
|
| 849 |
Return GetType(TSource).StaticPropertySet(Of TProperty)(propertyName)
|
| 850 |
End Function
|
| 851 |
|
| 852 |
<Extension>
|
| 853 |
Public Function StaticPropertySet(Of TProperty)(source As Type, propertyName As String) As Action(Of TProperty)
|
| 854 |
Dim propertyInfo = GetStaticPropertyInfo(source, propertyName)
|
| 855 |
Return DirectCast(propertyInfo.SetMethod.CreateDelegate(GetType(Action(Of TProperty))), Action(Of TProperty))
|
| 856 |
End Function
|
| 857 |
|
| 858 |
<Extension>
|
| 859 |
Public Function StaticPropertySet(source As Type, propertyName As String) As Action(Of Object)
|
| 860 |
Dim propertyInfo = GetStaticPropertyInfo(source, propertyName)
|
| 861 |
If propertyInfo.GetMethod Is Nothing Then
|
| 862 |
Return Nothing
|
| 863 |
End If
|
| 864 |
Dim valueParam = Expression.Parameter(GetType(Object))
|
| 865 |
Dim convertedValue = Expression.Convert(valueParam, propertyInfo.PropertyType)
|
| 866 |
Dim returnExpression As Expression = Expression.[Call](propertyInfo.SetMethod, convertedValue)
|
| 867 |
If Not propertyInfo.PropertyType.IsClass Then
|
| 868 |
returnExpression = Expression.Convert(returnExpression, GetType(Object))
|
| 869 |
End If
|
| 870 |
Return DirectCast(Expression.Lambda(returnExpression, valueParam).Compile(), Action(Of Object))
|
| 871 |
End Function
|
| 872 |
|
| 873 |
Private Function EventAccessor(Of TEventArgs)(source As Type, eventName As String, accessorName As String) As Action(Of Object, EventHandler(Of TEventArgs))
|
| 874 |
Dim accessor = GetEventInfoAccessor(eventName, source, accessorName)
|
| 875 |
If accessor IsNot Nothing Then
|
| 876 |
Dim instanceParameter = Expression.Parameter(GetType(Object))
|
| 877 |
Dim delegateTypeParameter = Expression.Parameter(GetType(EventHandler(Of TEventArgs)))
|
| 878 |
Dim lambda = Expression.Lambda(Expression.[Call](Expression.Convert(instanceParameter, source), accessor, delegateTypeParameter), instanceParameter, delegateTypeParameter)
|
| 879 |
Return DirectCast(lambda.Compile(), Action(Of Object, EventHandler(Of TEventArgs)))
|
| 880 |
End If
|
| 881 |
Return Nothing
|
| 882 |
End Function
|
| 883 |
|
| 884 |
Private Function EventAccessor(Of TSource, TEventArgs)(eventName As String, accessorName As String) As Action(Of TSource, EventHandler(Of TEventArgs))
|
| 885 |
Dim sourceType = GetType(TSource)
|
| 886 |
Dim accessor = GetEventInfoAccessor(eventName, sourceType, accessorName)
|
| 887 |
Return DirectCast(accessor.CreateDelegate(GetType(Action(Of TSource, EventHandler(Of TEventArgs)))), Action(Of TSource, EventHandler(Of TEventArgs)))
|
| 888 |
End Function
|
| 889 |
|
| 890 |
Private Function EventAccessorImpl(Of TDelegate As Class)(source As Type, eventName As String, accessorName As String) As TDelegate
|
| 891 |
Dim eventInfo = GetEventInfo(eventName, source)
|
| 892 |
If eventInfo IsNot Nothing Then
|
| 893 |
Dim accessor = If(accessorName = AddAccessor, eventInfo.AddMethod, eventInfo.RemoveMethod)
|
| 894 |
Dim eventArgsType = eventInfo.EventHandlerType.GetGenericArguments()(0)
|
| 895 |
Dim instanceParameter = Expression.Parameter(GetType(Object))
|
| 896 |
Dim delegateTypeParameter = Expression.Parameter(GetType(Object))
|
| 897 |
Dim methodCallExpression = Expression.[Call](EventHandlerFactoryMethodInfo.MakeGenericMethod(eventArgsType, source), delegateTypeParameter, Expression.Constant(accessorName = RemoveAccessor))
|
| 898 |
Dim lambda = Expression.Lambda(Expression.[Call](Expression.Convert(instanceParameter, source), accessor, methodCallExpression), instanceParameter, delegateTypeParameter)
|
| 899 |
Return TryCast(lambda.Compile(), TDelegate)
|
| 900 |
End If
|
| 901 |
Return Nothing
|
| 902 |
End Function
|
| 903 |
|
| 904 |
<Extension>
|
| 905 |
Private Function EventAddImpl(Of TDelegate As Class)(source As Type, eventName As String) As TDelegate
|
| 906 |
Return EventAccessorImpl(Of TDelegate)(source, eventName, AddAccessor)
|
| 907 |
End Function
|
| 908 |
|
| 909 |
<Extension>
|
| 910 |
Private Function EventRemoveImpl(Of TDelegate As Class)(source As Type, eventName As String) As TDelegate
|
| 911 |
Return EventAccessorImpl(Of TDelegate)(source, eventName, RemoveAccessor)
|
| 912 |
End Function
|
| 913 |
|
| 914 |
Private Function GetConstructorInfo(source As Type, types As Type()) As ConstructorInfo
|
| 915 |
Return If((If(source.GetConstructor(BindingFlags.[Public], Nothing, types, Nothing), source.GetConstructor(BindingFlags.NonPublic, Nothing, types, Nothing))), source.GetConstructor(BindingFlags.NonPublic Or BindingFlags.[Public] Or BindingFlags.Instance, Nothing, types, Nothing))
|
| 916 |
End Function
|
| 917 |
|
| 918 |
Private Function GetEventInfo(eventName As String, sourceType As Type) As EventInfo
|
| 919 |
Return If((If(sourceType.GetEvent(eventName), sourceType.GetEvent(eventName, BindingFlags.NonPublic))), sourceType.GetEvent(eventName, BindingFlags.NonPublic Or BindingFlags.[Public] Or BindingFlags.Instance))
|
| 920 |
End Function
|
| 921 |
|
| 922 |
Private Function GetEventInfoAccessor(eventName As String, sourceType As Type, accessor As String) As MethodInfo
|
| 923 |
Dim eventInfo = GetEventInfo(eventName, sourceType)
|
| 924 |
Return If(accessor = AddAccessor, eventInfo.AddMethod, eventInfo.RemoveMethod)
|
| 925 |
End Function
|
| 926 |
|
| 927 |
Private Function GetFieldInfo(source As Type, fieldName As String) As FieldInfo
|
| 928 |
Dim fieldInfo = If((If(source.GetField(fieldName), source.GetField(fieldName, BindingFlags.Instance Or BindingFlags.NonPublic))), source.GetField(fieldName, BindingFlags.Instance Or BindingFlags.NonPublic Or BindingFlags.[Public]))
|
| 929 |
Return fieldInfo
|
| 930 |
End Function
|
| 931 |
|
| 932 |
Private Function GetFuncDelegateArguments(Of TDelegate As Class)() As Type()
|
| 933 |
Dim arguments As IEnumerable(Of Type) = GetType(TDelegate).GenericTypeArguments
|
| 934 |
Return arguments.Reverse().Skip(1).Reverse().ToArray()
|
| 935 |
End Function
|
| 936 |
|
| 937 |
Private Function GetFuncDelegateReturnType(Of TDelegate As Class)() As Type
|
| 938 |
Return GetType(TDelegate).GenericTypeArguments.Last()
|
| 939 |
End Function
|
| 940 |
|
| 941 |
Private Function GetIndexerPropertyInfo(source As Type, returnType As Type, indexesTypes As Type(), Optional indexerName As String = Nothing) As PropertyInfo
|
| 942 |
indexerName = If(indexerName, Item)
|
| 943 |
|
| 944 |
Dim propertyInfo = If((If(source.GetProperty(indexerName, returnType, indexesTypes), source.GetProperty(indexerName, BindingFlags.NonPublic, Nothing, returnType, indexesTypes, Nothing))), source.GetProperty(indexerName, BindingFlags.NonPublic Or BindingFlags.[Public] Or BindingFlags.Instance, Nothing, returnType, indexesTypes, Nothing))
|
| 945 |
If propertyInfo IsNot Nothing Then
|
| 946 |
Return propertyInfo
|
| 947 |
End If
|
| 948 |
Dim indexer = source.GetProperties().FirstOrDefault(Function(p) p.GetIndexParameters().Length > 0)
|
| 949 |
Return If(indexer IsNot Nothing, GetIndexerPropertyInfo(source, returnType, indexesTypes, indexer.Name), Nothing)
|
| 950 |
End Function
|
| 951 |
|
| 952 |
Private Function GetMethodInfo(source As Type, name As String, parametersTypes As Type(), Optional typeParameters As Type() = Nothing) As MethodInfo
|
| 953 |
Dim methodInfo As MethodInfo = Nothing
|
| 954 |
Try
|
| 955 |
methodInfo = If((If(source.GetMethod(name, BindingFlags.Instance Or BindingFlags.[Public], Nothing, parametersTypes, Nothing), source.GetMethod(name, BindingFlags.Instance Or BindingFlags.NonPublic, Nothing, parametersTypes, Nothing))), source.GetMethod(name, BindingFlags.Instance Or BindingFlags.NonPublic Or BindingFlags.[Public], Nothing, parametersTypes, Nothing))
|
| 956 |
|
| 957 |
Catch generatedExceptionName As AmbiguousMatchException
|
| 958 |
End Try
|
| 959 |
|
| 960 |
If typeParameters IsNot Nothing Then
|
| 961 |
Dim ms = source.GetMethods(BindingFlags.Instance Or BindingFlags.[Public]).Concat(source.GetMethods(BindingFlags.NonPublic Or BindingFlags.Instance)).Concat(source.GetMethods(BindingFlags.[Public] Or BindingFlags.NonPublic Or BindingFlags.Instance))
|
| 962 |
For Each m In ms
|
| 963 |
If m.Name = name AndAlso m.IsGenericMethod Then
|
| 964 |
Dim parameters = m.GetParameters()
|
| 965 |
Dim genericArguments = m.GetGenericArguments()
|
| 966 |
Dim parametersTypesValid = parameters.Length = parametersTypes.Length
|
| 967 |
parametersTypesValid = parametersTypesValid And genericArguments.Length = typeParameters.Length
|
| 968 |
If Not parametersTypesValid Then
|
| 969 |
Continue For
|
| 970 |
End If
|
| 971 |
For index As Integer = 0 To parameters.Length - 1
|
| 972 |
Dim parameterInfo = parameters(index)
|
| 973 |
Dim parameterType = parametersTypes(index)
|
| 974 |
If parameterInfo.ParameterType IsNot parameterType AndAlso parameterInfo.ParameterType.IsGenericParameter AndAlso Not parameterInfo.ParameterType.CanBeAssignedFrom(parameterType) Then
|
| 975 |
parametersTypesValid = False
|
| 976 |
Exit For
|
| 977 |
End If
|
| 978 |
Next
|
| 979 |
For index As Integer = 0 To genericArguments.Length - 1
|
| 980 |
Dim genericArgument = genericArguments(index)
|
| 981 |
Dim typeParameter = typeParameters(index)
|
| 982 |
If Not genericArgument.CanBeAssignedFrom(typeParameter) Then
|
| 983 |
parametersTypesValid = False
|
| 984 |
Exit For
|
| 985 |
End If
|
| 986 |
Next
|
| 987 |
If parametersTypesValid Then
|
| 988 |
methodInfo = m.MakeGenericMethod(typeParameters)
|
| 989 |
Exit For
|
| 990 |
End If
|
| 991 |
End If
|
| 992 |
Next
|
| 993 |
End If
|
| 994 |
Return methodInfo
|
| 995 |
End Function
|
| 996 |
|
| 997 |
Private Function GetPropertyInfo(source As Type, propertyName As String) As PropertyInfo
|
| 998 |
Dim propertyInfo = If(source.GetProperty(propertyName), If(source.GetProperty(propertyName, BindingFlags.NonPublic), source.GetProperty(propertyName, BindingFlags.NonPublic Or BindingFlags.[Public] Or BindingFlags.Instance)))
|
| 999 |
Return propertyInfo
|
| 1000 |
End Function
|
| 1001 |
|
| 1002 |
Private Function GetStaticFieldInfo(source As Type, fieldName As String) As FieldInfo
|
| 1003 |
Dim fieldInfo = If((If(source.GetField(fieldName, BindingFlags.[Static]), source.GetField(fieldName, BindingFlags.[Static] Or BindingFlags.NonPublic))), source.GetField(fieldName, BindingFlags.[Static] Or BindingFlags.NonPublic Or BindingFlags.[Public]))
|
| 1004 |
Return fieldInfo
|
| 1005 |
End Function
|
| 1006 |
|
| 1007 |
Private Function GetStaticMethodInfo(source As Type, name As String, parametersTypes As Type(), Optional typeParameters As Type() = Nothing) As MethodInfo
|
| 1008 |
Dim methodInfo As MethodInfo = Nothing
|
| 1009 |
Try
|
| 1010 |
methodInfo = If((If(source.GetMethod(name, BindingFlags.[Static], Nothing, parametersTypes, Nothing), source.GetMethod(name, BindingFlags.[Static] Or BindingFlags.NonPublic, Nothing, parametersTypes, Nothing))), source.GetMethod(name, BindingFlags.[Static] Or BindingFlags.NonPublic Or BindingFlags.[Public], Nothing, parametersTypes, Nothing))
|
| 1011 |
|
| 1012 |
Catch generatedExceptionName As AmbiguousMatchException
|
| 1013 |
End Try
|
| 1014 |
|
| 1015 |
If typeParameters IsNot Nothing Then
|
| 1016 |
Dim ms = source.GetMethods(BindingFlags.[Static]).Concat(source.GetMethods(BindingFlags.NonPublic Or BindingFlags.[Static])).Concat(source.GetMethods(BindingFlags.[Public] Or BindingFlags.NonPublic Or BindingFlags.[Static]))
|
| 1017 |
For Each m In ms
|
| 1018 |
If m.Name = name AndAlso m.IsGenericMethod Then
|
| 1019 |
Dim parameters = m.GetParameters()
|
| 1020 |
Dim genericArguments = m.GetGenericArguments()
|
| 1021 |
Dim parametersTypesValid = parameters.Length = parametersTypes.Length
|
| 1022 |
parametersTypesValid = parametersTypesValid And genericArguments.Length = typeParameters.Length
|
| 1023 |
If Not parametersTypesValid Then
|
| 1024 |
Continue For
|
| 1025 |
End If
|
| 1026 |
For index As Integer = 0 To parameters.Length - 1
|
| 1027 |
Dim parameterInfo = parameters(index)
|
| 1028 |
Dim parameterType = parametersTypes(index)
|
| 1029 |
If parameterInfo.ParameterType IsNot parameterType AndAlso parameterInfo.ParameterType.IsGenericParameter AndAlso Not parameterInfo.ParameterType.CanBeAssignedFrom(parameterType) Then
|
| 1030 |
parametersTypesValid = False
|
| 1031 |
Exit For
|
| 1032 |
End If
|
| 1033 |
Next
|
| 1034 |
For index As Integer = 0 To genericArguments.Length - 1
|
| 1035 |
Dim genericArgument = genericArguments(index)
|
| 1036 |
Dim typeParameter = typeParameters(index)
|
| 1037 |
If Not genericArgument.CanBeAssignedFrom(typeParameter) Then
|
| 1038 |
parametersTypesValid = False
|
| 1039 |
Exit For
|
| 1040 |
End If
|
| 1041 |
Next
|
| 1042 |
If parametersTypesValid Then
|
| 1043 |
methodInfo = m.MakeGenericMethod(typeParameters)
|
| 1044 |
Exit For
|
| 1045 |
End If
|
| 1046 |
End If
|
| 1047 |
Next
|
| 1048 |
End If
|
| 1049 |
Return methodInfo
|
| 1050 |
End Function
|
| 1051 |
|
| 1052 |
Private Function GetStaticPropertyInfo(source As Type, propertyName As String) As PropertyInfo
|
| 1053 |
Dim propertyInfo = If((If(source.GetProperty(propertyName, BindingFlags.[Static]), source.GetProperty(propertyName, BindingFlags.[Static] Or BindingFlags.NonPublic))), source.GetProperty(propertyName, BindingFlags.[Static] Or BindingFlags.NonPublic Or BindingFlags.[Public]))
|
| 1054 |
Return propertyInfo
|
| 1055 |
End Function
|
| 1056 |
|
| 1057 |
Private Function PropertyGet(Of TSource, TProperty)(Optional propertyName As String = Nothing, Optional propertyInfo As PropertyInfo = Nothing) As Func(Of TSource, TProperty)
|
| 1058 |
Dim source = GetType(TSource)
|
| 1059 |
propertyInfo = If(propertyInfo, GetPropertyInfo(source, propertyName))
|
| 1060 |
Return DirectCast(propertyInfo.GetMethod.CreateDelegate(GetType(Func(Of TSource, TProperty))), Func(Of TSource, TProperty))
|
| 1061 |
End Function
|
| 1062 |
End Module
|
| 1063 |
End Namespace
|