rocket::mtls::x509::der_parser::asn1_rs::nom::combinator

Function map_parser

Source 
pub fn map_parser<I, O1, O2, E, F, G>(
    parser: F,
    applied_parser: G,
) -> impl FnMut(I)
where
    E: ParseError<I>,
    F: Parser<I, O1, E>,
    G: Parser<O1, O2, E>,
Available on crate feature mtls only.
Expand description

Applies a parser over the result of another one.

use nom::character::complete::digit1;
use nom::bytes::complete::take;
use nom::combinator::map_parser;

let mut parse = map_parser(take(5u8), digit1);

assert_eq!(parse("12345"), Ok(("", "12345")));
assert_eq!(parse("123ab"), Ok(("", "123")));
assert_eq!(parse("123"), Err(Err::Error(("123", ErrorKind::Eof))));