vendor/net2/src/utils.rs

   1 // Copyright 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
  12 #[doc(hidden)]
  13 pub trait NetInt {
  14     fn from_be(i: Self) -> Self;
  15     fn to_be(&self) -> Self;
  16 }
  17 macro_rules! doit {
  18     ($($t:ident)*) => ($(impl NetInt for $t {
  19         fn from_be(i: Self) -> Self { <$t>::from_be(i) }
  20         fn to_be(&self) -> Self { <$t>::to_be(*self) }
  21     })*)
  22 }
  23 doit! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize }
  24
  25 #[doc(hidden)]
  26 pub trait One {
  27     fn one() -> Self;
  28 }
  29
  30 macro_rules! one {
  31     ($($t:ident)*) => ($(
  32         impl One for $t { fn one() -> $t { 1 } }
  33     )*)
  34 }
  35
  36 one! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize }
  37
  38
  39 #[doc(hidden)]
  40 pub trait Zero {
  41     fn zero() -> Self;
  42 }
  43
  44 macro_rules! zero {
  45     ($($t:ident)*) => ($(
  46         impl Zero for $t { fn zero() -> $t { 0 } }
  47     )*)
  48 }
  49
  50 zero! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize }
  51