# Macro synom::take_until [−] [src]

    macro_rules! take_until {
        ($i:expr, $substr:expr) => { ... };
    }

Parse the part of the input up to but not including the given string. Fail to parse if the given string is not present in the input.

- Syntax: `take_until!("...")`
- Output: `&str`

    extern crate syn;
    #[macro_use] extern crate synom;
    use synom::IResult;

    // Parse a single line doc comment: /// ...
    named!(single_line_doc -> &str,
        preceded!(punct!("///"), take_until!("\n"))
    );

    fn main() {
        let comment = "/// comment\n";
        let parsed = single_line_doc(comment).expect("single line doc comment");
        assert_eq!(parsed, " comment");
    }

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