Guess what you can do both at the same time! :D There is already a module which converts an ANTLR4 grammar into a full Perl 6 grammar which then provides a ready made parser for you :) <a href="https:&#x2F;&#x2F;github.com&#x2F;drforr&#x2F;perl6-ANTLR4" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;drforr&#x2F;perl6-ANTLR4</a>