(TranslationUnit
    [(Subroutine
        sub
        []
        []
        ()
        (TriviaNode
            [(Semicolon)]
            [(Semicolon)]
        )
        []
        []
        []
        []
        []
        []
        []
    )
    (Program
        __xx_main
        ()
        []
        []
        [(Declaration
            (AttrType
                TypeInteger
                []
                ()
                ()
                None
            )
            []
            [(i
            []
            []
            ()
            ()
            None
            ())]
            ()
        )]
        []
        []
    )]
)
