Wednesday January 30, 2002
I was thinking about the multiple ways to extend Perl's syntax and semantics.
There are :
- ties, for new magic variables
- builtin overriding
- operator overloading
- the coderef-in-@INC feature, undocumented in 5.6.1
- source filters (using, for example, Filter::Simple); my
module Sub::Quotelike uses this technique.
- for wizards : Simon Cozens' B::Generate module, that
allows a perl program to modify it's own internal optree. (I haven't used
Is there something missing ?
I also played with the first release of Simon's
Perl 6 tokenizer. Great draft, I hope I'll have more time to look at it (and at Perl 6 parsing) soon.