1#![allow(dead_code)]
2// #![allow(unused_variables)]
3
4use std::str;
5
6use nom::bytes::complete::is_not;
7use nom::character::complete::char;
8use nom::combinator::{map, map_res};
9use nom::multi::fold_many0;
10use nom::sequence::delimited;
11use nom::IResult;
12
13fn atom<'a>(_tomb: &'a mut ()) -> impl FnMut(&'a [u8]) -> IResult<&'a [u8], String> {
14  move |input| {
15    map(
16      map_res(is_not(" \t\r\n"), str::from_utf8),
17      ToString::to_string,
18    )(input)
19  }
20}
21
22// FIXME: should we support the use case of borrowing data mutably in a parser?
23fn list<'a>(i: &'a [u8], tomb: &'a mut ()) -> IResult<&'a [u8], String> {
24  delimited(
25    char('('),
26    fold_many0(atom(tomb), String::new, |acc: String, next: String| {
27      acc + next.as_str()
28    }),
29    char(')'),
30  )(i)
31}
32