Function lip::wrap

pub fn wrap<'a, A: 'a, B: 'a, C: 'a, S: Clone + 'a, P1: 'a, P2: 'a, P3: 'a>(
    left_delimiter: P1, 
    wrapped: P2, 
    right_delimiter: P3
) -> BoxedParser<'a, B, S> where
    P1: Parser<'a, A, S>,
    P2: Parser<'a, B, S>,
    P3: Parser<'a, C, S>, 

Wrap a parser with two other delimiter parsers

Example: Parsing a double-quoted string.

succeed(wrap(token("\""), take_chomped(chomp_while0(|c: &char| *c != '"', "string")), token("\"")), "\"I, have 1 string here\"",
  "I, have 1 string here".to_string());
fail(wrap(token("\""), take_chomped(chomp_while0(|c: &char| *c != '"', "string")), token("\"")), "\"I, have 1 string here",
  "I'm expecting a `\"` but found nothing.");