Function parse_bool

src/parser.rs:166–171

Our boolean values are also constant, so we can do it the same way

(i: &'a str)

/// Our boolean values are also constant, so we can do it the same way
fn parse_bool<'a>(i: &'a str) -> IResult<&'a str, Atom, VerboseError<&'a str>> {
  alt((
    map(tag("#t"), |_| Atom::Num(Wrapping(1))),
    map(tag("#f"), |_| Atom::Num(Wrapping(0))),
  ))(i)
}

/// The next easiest thing to parse are keywords.
/// We introduce some error handling combinators: `context` for human readable errors