From 5e616dbd2189844044e039436b7ed16b44f6595a Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Fri, 20 Feb 2015 20:32:55 +0300
Subject: Tweaks to equality comparisons for slices/arrays/vectors

---
 src/libcore/array.rs | 51 ++++++++-------------------------------------------
 1 file changed, 8 insertions(+), 43 deletions(-)

(limited to 'src/libcore/array.rs')

diff --git a/src/libcore/array.rs b/src/libcore/array.rs
index afb5d95c9f8..a24c181b909 100644
--- a/src/libcore/array.rs
+++ b/src/libcore/array.rs
@@ -19,8 +19,7 @@ use cmp::{PartialEq, Eq, PartialOrd, Ord, Ordering};
 use fmt;
 use hash::{Hash, self};
 use iter::IntoIterator;
-use marker::Copy;
-use ops::Deref;
+use marker::{Copy, Sized};
 use option::Option;
 use slice::{Iter, IterMut, SliceExt};
 
@@ -76,47 +75,13 @@ macro_rules! array_impls {
                 }
             }
 
-            #[stable(feature = "rust1", since = "1.0.0")]
-            impl<A, B> PartialEq<[B; $N]> for [A; $N] where A: PartialEq<B> {
-                #[inline]
-                fn eq(&self, other: &[B; $N]) -> bool {
-                    &self[..] == &other[..]
-                }
-                #[inline]
-                fn ne(&self, other: &[B; $N]) -> bool {
-                    &self[..] != &other[..]
-                }
-            }
-
-            #[stable(feature = "rust1", since = "1.0.0")]
-            impl<'a, A, B, Rhs> PartialEq<Rhs> for [A; $N] where
-                A: PartialEq<B>,
-                Rhs: Deref<Target=[B]>,
-            {
-                #[inline(always)]
-                fn eq(&self, other: &Rhs) -> bool {
-                    PartialEq::eq(&self[..], &**other)
-                }
-                #[inline(always)]
-                fn ne(&self, other: &Rhs) -> bool {
-                    PartialEq::ne(&self[..], &**other)
-                }
-            }
-
-            #[stable(feature = "rust1", since = "1.0.0")]
-            impl<'a, A, B, Lhs> PartialEq<[B; $N]> for Lhs where
-                A: PartialEq<B>,
-                Lhs: Deref<Target=[A]>
-            {
-                #[inline(always)]
-                fn eq(&self, other: &[B; $N]) -> bool {
-                    PartialEq::eq(&**self, &other[..])
-                }
-                #[inline(always)]
-                fn ne(&self, other: &[B; $N]) -> bool {
-                    PartialEq::ne(&**self, &other[..])
-                }
-            }
+            // NOTE: some less important impls are omitted to reduce code bloat
+            __impl_slice_eq1! { [A; $N], [B; $N] }
+            __impl_slice_eq2! { [A; $N], [B] }
+            __impl_slice_eq2! { [A; $N], &'b [B] }
+            __impl_slice_eq2! { [A; $N], &'b mut [B] }
+            // __impl_slice_eq2! { [A; $N], &'b [B; $N] }
+            // __impl_slice_eq2! { [A; $N], &'b mut [B; $N] }
 
             #[stable(feature = "rust1", since = "1.0.0")]
             impl<T:Eq> Eq for [T; $N] { }
-- 
cgit 1.4.1-3-g733a5