src/librustc_trans/disr.rs

   1 // Copyright 2012-2015 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 #[derive(Debug, Eq, PartialEq, Copy, Clone)]
  12 pub struct Disr(pub u64);
  13
  14 impl Disr {
  15     pub fn wrapping_add(self, other: Self) -> Self {
  16         Disr(self.0.wrapping_add(other.0))
  17     }
  18 }
  19
  20 impl ::std::ops::BitAnd for Disr {
  21     type Output = Disr;
  22     fn bitand(self, other: Self) -> Self {
  23         Disr(self.0 & other.0)
  24     }
  25 }
  26
  27 impl From<::rustc::ty::Disr> for Disr {
  28     fn from(i: ::rustc::ty::Disr) -> Disr {
  29         Disr(i.to_u64_unchecked())
  30     }
  31 }
  32
  33 impl From<usize> for Disr {
  34     fn from(i: usize) -> Disr {
  35         Disr(i as u64)
  36     }
  37 }
  38
  39 impl PartialOrd for Disr {
  40     fn partial_cmp(&self, other: &Disr) -> Option<::std::cmp::Ordering> {
  41         self.0.partial_cmp(&other.0)
  42     }
  43 }
  44
  45 impl Ord for Disr {
  46     fn cmp(&self, other: &Disr) -> ::std::cmp::Ordering {
  47         self.0.cmp(&other.0)
  48     }
  49 }