A little automation for VBScript OOP (1)

Posted by Albert Gareev on Nov 25, 2008 | Categories: MS Excel DataSource code

Generate code for Property Let / Property Get / Property Set methods

What to use

1. MS Excel worksheet as input / output interface

2. MS Excel VBA macro to generate source code

3. Input parameters

Property Name - External name (used as Property Let / Get name)

Parent Class - Skip. Used in only with delegation (see next post).

Property Type - Variant (V) or Reference (R). Defines whether it’s Property Let or Set.

Internal Prefix - For creation of internal name of the property (E.g. use “p” for “p_X” property name).

External Prefix - For creation of Let / Set parameter name (E.g. use “in” for “in_X” parameter name).

Indent - type required number of Space characters there.

4. Output

After execution of the macro, Code cell will contain generated source code.

Source Code

Public Sub GenerateMethods1()
Set DataSheet = Workbooks(1).Worksheets(1).UsedRange
For RowIter = 2 To DataSheet.Rows.Count
    PropertyName = Trim(DataSheet.Cells(RowIter, 1))
    If PropertyName = "" Then PropertyName = "P" & RowIter
    PropertyType = UCase(Trim(DataSheet.Cells(RowIter, 3)))
    Select Case PropertyType
        Case "V", "S", "VARIANT"
            sOperator1a = "Let"
            sOperator1b = ""
        Case "P", "R", "POINTER", "REFERENCE"
            sOperator1a = "Set"
            sOperator1b = "Set"
        Case Else
            sOperator1a = "Let"
            sOperator1b = ""
    End Select
    InternalPrefix = Trim(DataSheet.Cells(RowIter, 4))
    ExternalPrefix = Trim(DataSheet.Cells(RowIter, 5))
    sIndent = DataSheet.Cells(RowIter, 6)
    CodeLine = sIndent & "Public Property Get " & PropertyName & vbCrLf
    CodeLine = CodeLine & sIndent & sIndent & sOperator1b & PropertyName & " = " & InternalPrefix & "_" & PropertyName & vbCrLf
    CodeLine = CodeLine & sIndent & "End Property" & vbCrLf
    CodeLine = CodeLine & vbCrLf
    CodeLine = CodeLine & sIndent & "Public Property " & sOperator1a & " " & PropertyName & "(ByVal " & ExternalPrefix & "_" & PropertyName & ")" & vbCrLf
    CodeLine = CodeLine & sIndent & sIndent & sOperator1b & InternalPrefix & "_" & PropertyName & " = " & ExternalPrefix & "_" & PropertyName & vbCrLf
    CodeLine = CodeLine & sIndent & "End Property"
    DataSheet.Cells(RowIter, 7) = CodeLine
Next
End Sub

Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported
This work by Albert Gareev is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported.