Macro cpp_synom::take_until

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");
}