Macro synom::separated_nonempty_list

macro_rules! separated_nonempty_list {
    ($i:expr, $sep:ident!( $($args:tt)* ), $submac:ident!( $($args2:tt)* )) => { ... };
    ($i:expr, $submac:ident!( $($args:tt)* ), $g:expr) => { ... };
    ($i:expr, $f:expr, $submac:ident!( $($args:tt)* )) => { ... };
    ($i:expr, $f:expr, $g:expr) => { ... };
}

One or more values separated by some separator. Does not allow a trailing separator.

• Syntax: separated_nonempty_list!(SEPARATOR, THING)
• Output: Vec<THING>

You may also be looking for:

• separated_list! - one or more values
• terminated_list! - zero or more, allows trailing separator
• many0! - zero or more, no separator

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

use syn::Ty;
use syn::parse::ty;

// One or more Rust types separated by commas.
named!(comma_separated_types -> Vec<Ty>,
    separated_nonempty_list!(punct!(","), ty)
);

fn main() {
    let input = "&str, Map<K, V>, String";

    let parsed = comma_separated_types(input).expect("comma-separated types");

    assert_eq!(parsed.len(), 3);
    println!("{:?}", parsed);
}