Rakudo sources
Rakudo lives in Parrot repository in languages/perl6/ directory
http://svn.perl.org/parrot/trunk/languages/perl6/
- parse grammar (src/parser/grammar.pg, src/parser/*.pir)
 - -- converts source to parse tree
 
- parse actions (src/parser/actions.pm)
 - -- builds abstract syntax tree from parse
 
- main compiler object (perl6.pir)
 - -- handles command line options, initialization