Attribute Macro filler 

#[filler]

Parse an additionnal type between two struct fields.

Example

use parse_more::{parse_more, filler};
use syn::{Ident, Expr, Token};

#[parse_more]
struct Foo {
    name: Ident,
    #[filler(Token![=>])]
    values: (Expr, Expr),
}