derived instances of Eq and TotalEq for IpAddr rather than implement them manually.

Author: Eric Reed

src/libstd/rt/io/net/ip.rs

@@ -8,28 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::cmp::{Eq, TotalEq};
-
+#[deriving(Eq, TotalEq)]
 pub enum IpAddr {
     Ipv4(u8, u8, u8, u8, u16),
     Ipv6
 }
-
-impl Eq for IpAddr {
-    fn eq(&self, other: &IpAddr) -> bool {
-        match (*self, *other) {
-            (Ipv4(a,b,c,d,e), Ipv4(f,g,h,i,j)) => (a,b,c,d,e) == (f,g,h,i,j),
-            (Ipv6, Ipv6) => fail!(), 
-            _ => false
-        }
-    }
-    fn ne(&self, other: &IpAddr) -> bool {
-        !(self == other)
-    }
-}
-
-impl TotalEq for IpAddr {
-    fn equals(&self, other: &IpAddr) -> bool {
-        *self == *other
-    }
-}