// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#[allow(unnecessary_allocation)];

fn f1(ref_string: &str) -> ~str {
    match ref_string {
        "a" => ~"found a",
        "b" => ~"found b",
        _ => ~"not found"
    }
}

fn f2(ref_string: &str) -> ~str {
    match ref_string {
        "a" => ~"found a",
        "b" => ~"found b",
        s => format!("not found ({})", s)
    }
}

fn g1(ref_1: &str, ref_2: &str) -> ~str {
    match (ref_1, ref_2) {
        ("a", "b") => ~"found a,b",
        ("b", "c") => ~"found b,c",
        _ => ~"not found"
    }
}

fn g2(ref_1: &str, ref_2: &str) -> ~str {
    match (ref_1, ref_2) {
        ("a", "b") => ~"found a,b",
        ("b", "c") => ~"found b,c",
        (s1, s2) => format!("not found ({}, {})", s1, s2)
    }
}

pub fn main() {
    assert_eq!(f1(@"a"), ~"found a");
    assert_eq!(f1(~"b"), ~"found b");
    assert_eq!(f1(&"c"), ~"not found");
    assert_eq!(f1("d"), ~"not found");
    assert_eq!(f2(@"a"), ~"found a");
    assert_eq!(f2(~"b"), ~"found b");
    assert_eq!(f2(&"c"), ~"not found (c)");
    assert_eq!(f2("d"), ~"not found (d)");
    assert_eq!(g1(@"a", @"b"), ~"found a,b");
    assert_eq!(g1(~"b", ~"c"), ~"found b,c");
    assert_eq!(g1(&"c", &"d"), ~"not found");
    assert_eq!(g1("d", "e"), ~"not found");
    assert_eq!(g2(@"a", @"b"), ~"found a,b");
    assert_eq!(g2(~"b", ~"c"), ~"found b,c");
    assert_eq!(g2(&"c", &"d"), ~"not found (c, d)");
    assert_eq!(g2("d", "e"), ~"not found (d, e)");
}