1 #![allow(dead_code)]
2 // #![allow(unused_variables)]
3
4 use std::str;
5
6 use nom::bytes::complete::is_not;
7 use nom::character::complete::char;
8 use nom::combinator::{map, map_res};
9 use nom::multi::fold_many0;
10 use nom::sequence::delimited;
11 use nom::IResult;
12
atom<'a>(_tomb: &'a mut ()) -> impl FnMut(&'a [u8]) -> IResult<&'a [u8], String>13 fn 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?
list<'a>(i: &'a [u8], tomb: &'a mut ()) -> IResult<&'a [u8], String>23 fn 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