grammar Fly { rule TOP { <line>* } token function { "function" \s+ <ident> \s* <list> \s* <block> } token block { "{" <line>* "}" } token import { "import" \s+ <ident> } token statement { [^\s\(\)\{\}\[\]]+ } token line { <import> | <function> | <block> | <statement> | [\s|";"]+ } token list { "(" [ <statement> "," ]* <statement>? ")" } } sub MAIN(){ my $input = slurp; say Fly.parse($input);#, :actions(Fly::Actions)); }