VBScript determine which function is running - vbscript

Question

Is it possible in VBScript to determine the name of the function currently executing?
In .NET, you could do:
MethodBase method = MethodBase.GetCurrentMethod();
Console.WriteLine(method.Name);

Answer 1

In the past, I build a callstack viewer to see the performance of each function that is called. This needs one extra line of VBS code per function/sub and some overhead during runtime of course because of the extra code.
bottom - up:
Function DoSomething(a, b, c)
dim registerFunctionObj : Set registerFunctionObj = [new RegisterFunction]("DoSomething")
' other code
End Function
Whenever the function is called, it creates a new instance of the RegisterFunction object. When the function exits, the registerFunctionObj variable goes out of scope automatically, calling the Class_Terminate sub of the instance.
[new RegisterFunction] is just a function that return a registerFunction instance:
Function [new RegisterFunction](funcName)
Set [new RegisterFunction] = new cls_RegisterFunction
[new RegisterFunction].FunctionName = funcName
Set [new RegisterFunction].CallStackViewer = CallStackViewer
End function
Class cls_RegisterFunction
Private functionName_, startTime_, callStackViewer_, endTime_
Private Sub Class_Initialize
startTime_ = now
callStackViewer_.LogInitialize me
End Sub
Public Property Let FunctionName(fName)
functionName_ = fName
End Property
Public Property Set CallStackViewer(byRef csv)
Set callStackViewer_ = csv
End Property
Private Sub Class_Terminate
endTime_ = now
callStackViewer_.LogTerminate me
End Sub
End Class
The CallStackViewer instance is a singleton instance of the a CallStackViewer class, but you can make it a part of your project, so you retrieve it through you global project class:
Private PRIV_callStackViewer
Public Function CallStackViewer()
If not IsObject(PRIV_callStackViewer) Then
Set PRIV_callStackViewer = new cls_CallStackViewer
End If
Set CallStackViewer = PRIV_callStackViewer
End Function
Class cls_CallStackViewer
Public Sub Class_Initialize
' Here you can retrieve all function libraries (as text file) extract the
' function name, the file they are in and the linenumber
' Put them in a dictionary or a custom object
End Sub
Public Sub LogInitialize(byref registerFunction)
' Here you can push the function on a stack (use a standard dotnet list>stack for it),
' log the starttime to a log object or handle custom breakpoints
End Sub
Public Sub LogTerminate(byref registerFunction)
' Here you can pop the function from a stack, log the endtime to a log
' object or handle custom breakpoints
End Sub
End Class
Disclaimer: The code in here is pure demo code created on the fly. It lacks functionality and is only here to explain the concept. It could contain errors and is not complete.
The only thing you need is one line of code per function and your own imagination to expand it.

Answer 2

No, but you can easily implement it
dim module_name
sub sub1
module_name = "sub1"
wscript.echo "i'm " & module_name
'do something
end sub
function function1
module_name = "function1"
wscript.echo "i'm " & module_name
function1 = "something"
end function
In case of recursion you could also remember the level you'r in so that you can get out if getting too deep.