src/test/run-pass/borrowck-nested-calls.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 // ignore-test FIXME (#6268) nested method calls
  12
  13 // Test that (safe) nested calls with `&mut` receivers are permitted.
  14
  15 struct Foo {a: uint, b: uint}
  16
  17 impl Foo {
  18     pub fn inc_a(&mut self, v: uint) { self.a += v; }
  19
  20     pub fn next_b(&mut self) -> uint {
  21         let b = self.b;
  22         self.b += 1;
  23         b
  24     }
  25 }
  26
  27 pub fn main() {
  28     let mut f = Foo {a: 22, b: 23};
  29     f.inc_a(f.next_b());
  30     assert_eq!(f.a, 22+23);
  31     assert_eq!(f.b, 24);
  32 }