Macro cpp_synom::keyword

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

Parse a keyword like "fn" or "struct".

See also punct! for parsing punctuation, which are subtly different from keywords.

• Syntax: keyword!("...")
• Output: &str

extern crate syn;
#[macro_use] extern crate synom;

use synom::IResult;

// Parse zero or more "bang" keywords.
named!(many_bangs -> Vec<&str>,
    terminated!(
        many0!(keyword!("bang")),
        punct!(";")
    )
);

fn main() {
    let input = "bang bang bang;";
    let parsed = many_bangs(input).expect("bangs");
    assert_eq!(parsed, ["bang", "bang", "bang"]);

    let input = "bangbang;";
    let err = many_bangs(input);
    assert_eq!(err, IResult::Error);
}