Macro autoimpl

macro_rules! autoimpl {
    ($($tt:tt)*) => { ... };
}

Generates a default blanket impl for a generic trait that gets passed into autoimpl!, with the same type parameters and type bounds as its trait.

Panics

• If a trait is not a generic trait
• If more than one trait gets passed into an autoimpl! block
• If anything other than a trait gets passed into an autoimpl! block

Example

#[macro_use] extern crate autoimpl;

struct Dog {}

struct Duck {}

fn main() {
    autoimpl! {
        trait Quack<T> {
            fn say(&self) -> String {
                "quack".to_string()
            }
        }
    }

    let dog = Dog {};
    let duck = Duck {};
    assert_eq!(dog.say(), duck.say());
}