// Copyright 2013 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // Test that we are able to compile calls to associated fns like // `decode()` where the bound on the `Self` parameter references a // lifetime parameter of the trait. This example indicates why trait // lifetime parameters must be early bound in the type of the // associated item. // pretty-expanded FIXME #23616 use std::marker; pub enum Value<'v> { A(&'v str), B, } pub trait Decoder<'v> { fn read(&mut self) -> Value<'v>; } pub trait Decodable<'v, D: Decoder<'v>> { fn decode(d: &mut D) -> Self; } impl<'v, D: Decoder<'v>> Decodable<'v, D> for () { fn decode(d: &mut D) -> () { match d.read() { Value::A(..) => (), Value::B => Decodable::decode(d), } } } pub fn main() { }