gistfile1.txt

grammar MyApp {
    rule TOP { <cd> }

    rule cd { <cd_object> { say "View" } }

    rule cd_collection { '/cd' { say "CD Collection" } }
    rule cd_object { <cd_collection> '/' $<id>=(\d+) { say "CD Object: $id" } }

}

MyApp.parse('/cd/1');