VS.Net Macro for Generating Simple and CSLA Property Accessors

Here are a few macros I wrote to generate property accessors from your class level variables.

These Macros are absolutely not an example of great coding.  They are really pretty crappy, but they do the job, so as I kept tweaking them I never went back to clean up the code or look into more elegant ways to accomplish this stuff.

Some notes about these macros:

1) dasBlog’s code display tools somehow screws up the LFs, so if you cut and paste this code you might want to first paste it into Word, or WordPad.

2) These macros need some space between your last bit of code and the end of your class.  In other words, the line directly above “End Class” can’t have code in it.  Fixing this bug wouldn’t be a big deal but I haven’t done it yet.

3) These macros will allow formatting of your variables/accessors in any of the following ways:

private csClassLevelString as String '*** property name "ClassLevelString"
private mModuleLevelInt as Integer '*** property name "ModuleLevelInt"
private _SomeObject as Object '*** property name "SomeObject"
private camelCaseBoolean as Boolean '*** WON'T work: property will be named "CaseBoolean"

4) To use these macros, simply declare your class level (instance) variables.  Then with your mouse, highlight the ones you want to create property accessors for.  You need to highlight the entire definition from “private” to data type, and of course you can highlight a bunch at 1 time.  i.e. I could highlight the entire code block above and it would produce 4 property accessors.

5) Again… this code… well it kinda sucks.  So if you are looking for a lesson on producing good code, avert your eyes, but the output is good.


Imports System
Imports EnvDTE
Imports EnvDTE80
Imports System.Diagnostics

Public Module Module1

    Public Sub AddClassProperties()
        Call AddClassProperties(False)
    End Sub
    Public Sub AddCslaProperties()
        Call AddClassProperties(True)
    End Sub

    ‘ highlight the private properties
    Private Sub AddClassProperties(ByVal useCsla As Boolean)

        Dim oTextSelection As TextSelection = DTE.ActiveWindow.Selection
        Dim iLinesSelected = oTextSelection.TextRanges.Count
        Dim colPropertyList As New Collection()
        Dim iIndex As Integer
        Dim oStart As EditPoint = oTextSelection.TopPoint.CreateEditPoint()
        Dim oEnd As TextPoint = oTextSelection.BottomPoint

        ‘Create an Undo context object so all the changes can be
        ‘undone by CTRL+Z
        Dim oUnDo As UndoContext = DTE.UndoContext

        ‘Supress the User Interface. This will make it run faster
        ‘and make all the changes appear once
        DTE.SuppressUI = True


            oUnDo.Open(“Comment Line”)

            Dim sProperty As String
            Dim sLineOfText As String

            Do While (oStart.LessThan(oEnd))

                sLineOfText = oStart.GetText(oStart.LineLength).Trim
                ‘*** do some kind of simple check to make sure that this line
                ‘*** isn’t blank and isn’t some other kind of code or comment
                If (sLineOfText.IndexOf(” As “) >= 0 And ( _
                    (sLineOfText.IndexOf(“Public “) >= 0) Or _
                    (sLineOfText.IndexOf(“Private “) >= 0) Or _
                    (sLineOfText.IndexOf(“Dim “) >= 0) Or _
                    (sLineOfText.IndexOf(“Protected “) >= 0) Or _
                    (sLineOfText.IndexOf(“Friend “) >= 0) Or _
                    (sLineOfText.IndexOf(“ReDim “) >= 0) Or _
                    (sLineOfText.IndexOf(“Shared “) >= 0) Or _
                    (sLineOfText.IndexOf(“Static “) >= 0) _
                    )) Then

                    sProperty = oStart.GetText(oStart.LineLength).Trim.Replace(” New “, ” “).Replace(“()”, “”)

                End If



            If colPropertyList.Count > 0 Then

                For Each sProperty In colPropertyList
                    Call InsertProperty(sProperty, useCsla)

                MsgBox(“You must select the class properties”)
            End If

        Catch ex As System.Exception

            If MsgBoxResult.Yes = MsgBox(“Error: “ & ex.ToString & vbCrLf & “Undo Changes?”, MsgBoxStyle.YesNo) Then
            End If


            ‘If an error occured, then need to make sure that the undo context is cleaned up.
            ‘Otherwise, the editor can be left in a perpetual undo context
            If oUnDo.IsOpen Then
            End If

            DTE.SuppressUI = False
        End Try

    End Sub

    Private Sub InsertProperty(ByVal sProp As String, Optional ByVal UseCsla As Boolean = False)
        Dim oTextSelection As TextSelection = DTE.ActiveWindow.Selection
        Dim sMember As String = sProp.Substring(sProp.IndexOf(” “)).Trim
        Dim sDataType As String
        Dim sName As String
        Dim i As Integer
        Dim iAscVal As Integer

        i = sMember.IndexOf(“(“)
        If Not i = -1 Then
            sMember = sMember.Substring(0, i)
        End If

        i = sMember.IndexOf(“=”)
        If Not i = -1 Then
            sMember = sMember.Substring(0, i)
        End If

        sDataType = sMember.Substring(sMember.IndexOf(” As “) + 1)

        For i = 0 To sMember.Length 1
            ‘iAscVal = Asc(Mid(sName, i, 1))
            iAscVal = Asc(sMember.Chars(i))
            If iAscVal > 64 And iAscVal < 91 Then
                sName = sMember.Substring(i)
                Exit For
            End If
        Next i

        sName = sName.Substring(0, sName.IndexOf(” As “) + 1).Trim

        If sName.Length = 0 Then
            MsgBox(“Unable to process the class property: “ & sMember & “.  This is usually caused by an incorrect naming convention (e.g. not cxName)”)
        End If

        sMember = sMember.Substring(0, sMember.Length sDataType.Length).Trim

        With oTextSelection
            Dim pt As TextPoint = .ActivePoint.CodeElement(vsCMElement.vsCMElementClass).GetEndPoint(vsCMPart.vsCMPartWhole)
            If pt Is Nothing Then
                pt = .ActivePoint.CodeElement(vsCMElement.vsCMElementStruct).GetEndPoint(vsCMPart.vsCMPartWhole)
            End If

            .Text = “Public Property “ & sName & “() “ & sDataType
            If UseCsla Then
                .Text = “CanReadProperty(True)”
            End If
            .Text = “Return “ & sMember
            .StartOfLine(vsStartOfLineOptions.vsStartOfLineOptionsFirstColumn, True)
            .LineDown(False, 3)
            If UseCsla Then
                .Text = “CanWriteProperty(True)”
                .Text = “If Me.” & sMember & ” <> Value then”
            End If
            .Text = “Me.” & sMember & ” = Value”
            If UseCsla Then
                .Text = “PropertyHasChanged()”
            End If
            .LineDown(False, 2)
            If UseCsla Then
                .LineDown(False, 1)

            End If

        End With

    End Sub

End Module




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