I don't think that a second parse or using tie would make any difference here. Bear in mind that Visual Basic is not that smart either. I also thought that an unexplicitly-defined variable, like x in your example, is treated by VB as the omnivorous Variant, but MSDN claims that it automatically becomes an object. Strange -- that might be a difference between VB6 and VB.NET.

You are clearly building your own namespace table -- that's how you determined in the first example that x was an array. In nonstrict code, you're just going to have to determine a variable's type based on assignment. In the second example, that's not too difficult: split would imply an array. But what if the unknown Object is returned from a function:

x = FetchSomethingStrange(a)

Function FetchSomethingStrange(p as Integer)
  If p < 5 Then
    FetchSomethingStrange = split("my,array,result", ",")
  Else
    FetchSomethingStrange = "my string result"
  End If
End Function
[download]

Now, in this case, there's no way of knowing until runtime whether FetchSomethingStrange is going to return a String or an array. That leaves you with 2 options (as I see it):

• a VBVar object, like stephen suggested
• translating all VB arrays to Perl listrefs.

The listrefs would translate your nonstrict code as follows:

$x = b_split('john,biran,someone',',');
print($x->[0] . $x->[2]);

sub b_split {
    # not fully finished, needs $count and $compare
    my ($string, $delimiter, $count, $compare) = @_;
    $delimiter = quotemeta($delimiter);
    return [ split(/$delimiter/, $string) ];
}
[download]

My code translates well, too:

$x = FetchSomethingStrange($a);

sub FetchSomethingStrange {
  my($p) = @_;
  my $FetchSomethingStrange; # Autogenerated return value for VB funct
+ions
  if ($p < 5) {
    $FetchSomethingStrange = b_split("my,array,result", ",");
  }
  else {
    $FetchSomethingStrange = "my string result"
  }
  return $FetchSomethingStrange; # Autoreturn 
}
[download]

Again, you should be fine as long as the Perl translation is always talking in scalars, be they adapted VB scalars (String, Integer, Double) , Variant or Object types, or listrefs derived from Variant/Object auto-arrays or even from explicitly Dimed arrays.

- Richie

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