/// Constains predefined parsers and combinators.
/// Utility functions to recognize char class of byte value.
pub use ;
pub use Parser;
// The following code is not accepted by today's compiler.
// pub type Parser<'a, I, O> = combinator::Combinator<impl parser::Parser<'a, I, O>>;
// pub type Parser<I, O> = for<'a> parser::Parser<'a, I, O>;