src/test/ui/run-pass/issues/issue-13867.rs

   1 // Copyright 2012-2014 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.
   4 //
   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.
  10
  11 // run-pass
  12 // Test that codegen works correctly when there are multiple refutable
  13 // patterns in match expression.
  14
  15
  16 enum Foo {
  17     FooUint(usize),
  18     FooNullary,
  19 }
  20
  21 fn main() {
  22     let r = match (Foo::FooNullary, 'a') {
  23         (Foo::FooUint(..), 'a'..='z') => 1,
  24         (Foo::FooNullary, 'x') => 2,
  25         _ => 0
  26     };
  27     assert_eq!(r, 0);
  28
  29     let r = match (Foo::FooUint(0), 'a') {
  30         (Foo::FooUint(1), 'a'..='z') => 1,
  31         (Foo::FooUint(..), 'x') => 2,
  32         (Foo::FooNullary, 'a') => 3,
  33         _ => 0
  34     };
  35     assert_eq!(r, 0);
  36
  37     let r = match ('a', Foo::FooUint(0)) {
  38         ('a'..='z', Foo::FooUint(1)) => 1,
  39         ('x', Foo::FooUint(..)) => 2,
  40         ('a', Foo::FooNullary) => 3,
  41         _ => 0
  42     };
  43     assert_eq!(r, 0);
  44
  45     let r = match ('a', 'a') {
  46         ('a'..='z', 'b') => 1,
  47         ('x', 'a'..='z') => 2,
  48         _ => 0
  49     };
  50     assert_eq!(r, 0);
  51
  52     let r = match ('a', 'a') {
  53         ('a'..='z', 'b') => 1,
  54         ('x', 'a'..='z') => 2,
  55         ('a', 'a') => 3,
  56         _ => 0
  57     };
  58     assert_eq!(r, 3);
  59 }