rust-parser-combinator/src/combinators/map.rs

use crate::parser::{Parser, ParserInput};

pub fn map<P, F, I, O1, O2, E>(parser: P, map_fn: F) -> impl Parser<I, O2, E>
where
    I: ParserInput,
    P: Parser<I, O1, E>,
    F: Fn(O1) -> O2,
{
    let rep = parser.representation();
    let p = move |input| {
        parser
            .parse(input)
            .map(|(result, rest)| (map_fn(result), rest))
    };
    (p, rep)
}