| Pegex::Grammar::Atoms(3) | User Contributed Perl Documentation | Pegex::Grammar::Atoms(3) |
Pegex::Grammar::Atoms - Pegex Regex Atoms
use Pegex::Grammar::Atoms;
Atoms are special Pegex rules that represent the small pieces of text that you can use to build up regular expressions. Usually they are one or two characters.
It may seem like a waste of time to specify "COLON" in a regex, instead of a simple ":". There are three reasons this is encouraged. First is that you are defining a grammar for a new language, and it is worth the time to be clear and verbose. Second, using an abstraction like this can help with portability to languages with different regex engines. Finally, it makes the grammar for Pegex so much simpler, because a "/" is always a part of the Pegex syntax, and a "SLASH" is part of your grammar.
Ingy döt Net <ingy@cpan.org>
Copyright 2010-2020. Ingy döt Net.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See <http://www.perl.com/perl/misc/Artistic.html>
| 2020-02-13 | perl v5.34.0 |