position/
position.rs

1extern crate nom;
2extern crate nom_locate;
3
4use nom::bytes::complete::{tag, take_until};
5use nom::IResult;
6use nom_locate::{position, LocatedSpan};
7
8type Span<'a> = LocatedSpan<&'a str>;
9
10struct Token<'a> {
11    pub position: Span<'a>,
12    pub _foo: &'a str,
13    pub _bar: &'a str,
14}
15
16fn parse_foobar(s: Span) -> IResult<Span, Token> {
17    let (s, _) = take_until("foo")(s)?;
18    let (s, pos) = position(s)?;
19    let (s, foo) = tag("foo")(s)?;
20    let (s, bar) = tag("bar")(s)?;
21
22    Ok((
23        s,
24        Token {
25            position: pos,
26            _foo: foo.fragment(),
27            _bar: bar.fragment(),
28        },
29    ))
30}
31
32fn main() {
33    let input = Span::new("Lorem ipsum \n foobar");
34    let output = parse_foobar(input);
35    let position = output.unwrap().1.position;
36    assert_eq!(position, unsafe {
37        Span::new_from_raw_offset(
38            14, // offset
39            2,  // line
40            "", // fragment
41            (), // extra
42        )
43    });
44    assert_eq!(position.get_column(), 2);
45}
position/position.rs

position/
position.rs
