1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 enum colour { red, green, blue, }
14 enum tree { children(Box<list>), leaf(colour), }
16 enum list { cons(Box<tree>, Box<list>), nil, }
18 enum small_list { kons(int, Box<small_list>), neel, }