src/test/run-pass/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 // Test method calls with self as an argument
  12
  13
  14 #![allow(unknown_features)]
  15 #![feature(box_syntax)]
  16
  17 static mut COUNT: usize = 1;
  18
  19 #[derive(Copy, Clone)]
  20 struct Foo;
  21
  22 impl Foo {
  23     fn foo(self, x: &Foo) {
  24         unsafe { COUNT *= 2; }
  25         // Test internal call.
  26         Foo::bar(&self);
  27         Foo::bar(x);
  28
  29         Foo::baz(self);
  30         Foo::baz(*x);
  31
  32         Foo::qux(box self);
  33         Foo::qux(box *x);
  34     }
  35
  36     fn bar(&self) {
  37         unsafe { COUNT *= 3; }
  38     }
  39
  40     fn baz(self) {
  41         unsafe { COUNT *= 5; }
  42     }
  43
  44     fn qux(self: Box<Foo>) {
  45         unsafe { COUNT *= 7; }
  46     }
  47 }
  48
  49 fn main() {
  50     let x = Foo;
  51     // Test external call.
  52     Foo::bar(&x);
  53     Foo::baz(x);
  54     Foo::qux(box x);
  55
  56     x.foo(&x);
  57
  58     unsafe { assert_eq!(COUNT, 2*3*3*3*5*5*5*7*7*7); }
  59 }