use crate::{representation::Representation, Parser, ParserExtension};

pub fn map<P, F, I, O1, O2, E>(parser: P, map_fn: F) -> impl Parser<I, O2, E>
where
    P: Parser<I, O1, E>,
    F: Fn(O1) -> O2,
{
    let production = parser.representation().production();
    (move |input| {
        parser
            .parse(input)
            .map(|(result, rest)| (map_fn(result), rest))
    })
    .to_anno()
    .with_repr(Representation::new().with_production(production))
}