# Function nom::multi::separated_list1

source · [−]

    pub fn separated_list1<I, O, O2, E, F, G>(
        sep: G,
        f: F
    ) -> impl FnMut(I) -> IResult<I, Vec<O>, E> where
        I: Clone + InputLength,
        F: Parser<I, O, E>,
        G: Parser<I, O2, E>,
        E: ParseError<I>,

Expand description

Alternates between two parsers to produce a list of elements until `Err::Error`.

Fails if the element parser does not produce at least one element.$

This stops when either parser returns `Err::Error` and returns the results that were accumulated. To instead chain an error up, see `cut`.

## Arguments

- `sep` Parses the separator between list elements.
- `f` Parses the elements of the list.

    use nom::multi::separated_list1;
    use nom::bytes::complete::tag;

    fn parser(s: &str) -> IResult<&str, Vec<&str>> {
      separated_list1(tag("|"), tag("abc"))(s)
    }

    assert_eq!(parser("abc|abc|abc"), Ok(("", vec!["abc", "abc", "abc"])));
    assert_eq!(parser("abc123abc"), Ok(("123abc", vec!["abc"])));
    assert_eq!(parser("abc|def"), Ok(("|def", vec!["abc"])));
    assert_eq!(parser(""), Err(Err::Error(Error::new("", ErrorKind::Tag))));
    assert_eq!(parser("def|abc"), Err(Err::Error(Error::new("def|abc", ErrorKind::Tag))));