src/test/ui/run-pass/methods/method-self-arg.rs

   1 // Copyright 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 method calls with self as an argument
  13
  14 #![feature(box_syntax)]
  15
  16 static mut COUNT: usize = 1;
  17
  18 #[derive(Copy, Clone)]
  19 struct Foo;
  20
  21 impl Foo {
  22     fn foo(self, x: &Foo) {
  23         unsafe { COUNT *= 2; }
  24         // Test internal call.
  25         Foo::bar(&self);
  26         Foo::bar(x);
  27
  28         Foo::baz(self);
  29         Foo::baz(*x);
  30
  31         Foo::qux(box self);
  32         Foo::qux(box *x);
  33     }
  34
  35     fn bar(&self) {
  36         unsafe { COUNT *= 3; }
  37     }
  38
  39     fn baz(self) {
  40         unsafe { COUNT *= 5; }
  41     }
  42
  43     fn qux(self: Box<Foo>) {
  44         unsafe { COUNT *= 7; }
  45     }
  46 }
  47
  48 fn main() {
  49     let x = Foo;
  50     // Test external call.
  51     Foo::bar(&x);
  52     Foo::baz(x);
  53     Foo::qux(box x);
  54
  55     x.foo(&x);
  56
  57     unsafe { assert_eq!(COUNT, 2*3*3*3*5*5*5*7*7*7); }
  58 }