You could write a macro to do this -- you would use Visual Studio's parser to retrieve information about the class's members.
I wrote a similar macro. (I'll share the code below). The macro I wrote is for copying forward all of the constructors in a base class when you inherit from it (useful for classes like Exception that have lots of overloads on the ctor).
Here's my macro (again, it doesn't solve your problem, but you can probably modify to do what you want)
Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports EnvDTE100
Imports System.Diagnostics
Public Module ConstructorEditor
Public Sub StubConstructors()
'adds stubs for all of the constructors in the current class's base class
Dim selection As TextSelection = DTE.ActiveDocument.Selection
Dim classInfo As CodeClass2 = GetClassElement()
If classInfo Is Nothing Then
System.Windows.Forms.MessageBox.Show("No class was found surrounding the cursor. Make sure that this file compiles and try again.", "Error")
Return
End If
If classInfo.Bases.Count = 0 Then
System.Windows.Forms.MessageBox.Show("No parent class was found for this class. Make sure that this file, and any file containing parent classes compiles and try again")
Return
End If
'setting up an undo context -- one ctrl+z undoes everything
Dim closeUndoContext As Boolean = False
If DTE.UndoContext.IsOpen = False Then
closeUndoContext = True
DTE.UndoContext.Open("StubConstructorsContext", False)
End If
Try
Dim parentInfo As CodeClass2 = classInfo.Bases.Item(1)
Dim childConstructors As System.Collections.Generic.List(Of CodeFunction2) = GetConstructors(classInfo)
Dim parentConstructors As System.Collections.Generic.List(Of CodeFunction2) = GetConstructors(parentInfo)
For Each constructor As CodeFunction2 In parentConstructors
If Not MatchingSignatureExists(constructor, childConstructors) Then
' we only want to create ctor stubs for ctors that are missing
' note: a dictionary could be more efficient, but I doubt most classes will have more than 4 or 5 ctors...
StubConstructor(classInfo, constructor)
End If
Next
Finally
If closeUndoContext Then
DTE.UndoContext.Close()
End If
End Try
End Sub
Private Function GetConstructors(ByVal classInfo As CodeClass2) As System.Collections.Generic.List(Of CodeFunction2)
' return a list of all of the constructors in the specified class
Dim result As System.Collections.Generic.List(Of CodeFunction2) = New System.Collections.Generic.List(Of CodeFunction2)
Dim func As CodeFunction2
For Each member As CodeElement2 In classInfo.Members
' members collection has all class members. filter out just the function members, and then of the functions, grab just the ctors
func = TryCast(member, CodeFunction2)
If func Is Nothing Then Continue For
If func.FunctionKind = vsCMFunction.vsCMFunctionConstructor Then
result.Add(func)
End If
Next
Return result
End Function
Private Function MatchingSignatureExists(ByVal searchFunction As CodeFunction2, ByVal functions As System.Collections.Generic.List(Of CodeFunction2)) As Boolean
' given a function (searchFunction), searches a list of functions where the function signatures (not necessarily the names) match
' return null if no match is found, otherwise returns first match
For Each func As CodeFunction In functions
If func.Parameters.Count <> searchFunction.Parameters.Count Then Continue For
Dim searchParam As CodeParameter2
Dim funcParam As CodeParameter2
Dim match As Boolean = True
For count As Integer = 1 To searchFunction.Parameters.Count
searchParam = searchFunction.Parameters.Item(count)
funcParam = func.Parameters.Item(count)
If searchParam.Type.AsFullName <> funcParam.Type.AsFullName Then
match = False
Exit For
End If
Next
If match Then
Return True
End If
Next
' no match found
Return False
End Function
Private Sub StubConstructor(ByVal classInfo As CodeClass2, ByVal parentConstructor As CodeFunction2)
' adds a constructor to the current class, based upon the parentConstructor that is passed in
' highly inefficient hack to position the ctor where I want it (after the last ctor in the class, if there is another ctor
' note that passing zero as the position (put the ctor first) caused some problems when we were adding ctors to classes that already had ctors
Dim position As Object
Dim ctors As System.Collections.Generic.List(Of CodeFunction2) = GetConstructors(classInfo)
If ctors.Count = 0 Then
position = 0
Else
position = ctors.Item(ctors.Count - 1)
End If
' if there are no other ctors, put this one at the top
Dim ctor As CodeFunction2 = classInfo.AddFunction(classInfo.Name, vsCMFunction.vsCMFunctionConstructor, vsCMTypeRef.vsCMTypeRefVoid, position, parentConstructor.Access)
Dim baseCall As String = ":base("
Dim separator As String = ""
For Each parameter As CodeParameter2 In parentConstructor.Parameters
ctor.AddParameter(parameter.Name, parameter.Type, -1)
baseCall += separator + parameter.Name
separator = ", "
Next
baseCall += ")"
' and 1 sad hack -- appears to be no way to programmatically add the :base() calls without using direct string manipulation
Dim startPoint As TextPoint = ctor.GetStartPoint()
Dim endOfSignature As EditPoint = startPoint.CreateEditPoint()
endOfSignature.EndOfLine()
endOfSignature.Insert(baseCall)
startPoint.CreateEditPoint().SmartFormat(endOfSignature)
End Sub
Private Function GetClassElement() As CodeClass2
'returns a CodeClass2 element representing the class that the cursor is within, or null if there is no class
Try
Dim selection As TextSelection = DTE.ActiveDocument.Selection
Dim fileCodeModel As FileCodeModel2 = DTE.ActiveDocument.ProjectItem.FileCodeModel
Dim element As CodeElement2 = fileCodeModel.CodeElementFromPoint(selection.TopPoint, vsCMElement.vsCMElementClass)
Return element
Catch
Return Nothing
End Try
End Function
End Module
