Hi Leo,

IMHO you are mixing distinct tasks in file parsing.

• File reading.
• Scanning (or call it tokenizing.)
• Parsing.

At least, that's how Aho, Sethi and Ullman was sumarized to me.

For the scanning I would write a class that parses output from a handle and returns tokens or raises exceptions.

In fact I am working on a general purpose tokenizer/token package to deal with such cases. The code is one small part of a larger project I do so I haven't made it public (yet.) Tell me if you really want a preview of the package.

I did similar work in this module.

Vincenzo