On Tue, 26 May 2009, Daniel Carrera wrote:
Carl Mäsak wrote:
In this way, a relatively simple change makes Perl 6 Pod able to do
literate
programing for anyone who is interested.
What do you think?
That it sounds like a good idea for a sublanguage-extending module.
I'm not familiar with those. Are they hard to make? I guess that it is
perfectly reasonable to make this a separate module. How would it work?
They may not be possible as the code currently stands, but according
to the spec, they'll be relatively easy once you have a grip on grammars.
A grammar groups regexes in the same way a class groups methods. Perl
6 itself is a grammar. So you have 3 steps:
1. Make your own grammar that inherits from the Perl 6 one
2. Override the rules that need changing
3. Replace the Perl 6 grammar with your own.
Steps 1 and 3 are dead easy. Step 2 varies in difficulty depending on
the changes you're making.
Step 1 is something like this:
grammar MyPerl6 is STD {
...
}
Step 3 will be something like this, I think:
$~MAIN = MyPerl6;
See the section on "Grammars" in S05.
http://perlcabal.org/syn/S05.html
HTH,
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| Name: Tim Nelson | Because the Creator is, |
| E-mail: wayl...@wayland.id.au | I am |
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