8a959ad447
Using the comparison operators already refs the operands, so doing it ourselves as well just adds an unnecessary level of indirection.
47 lines
1.6 KiB
Rust
47 lines
1.6 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Utility macros for implementing PartialEq on slice-like types
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#![doc(hidden)]
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#[macro_export]
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macro_rules! __impl_slice_eq1 {
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($Lhs: ty, $Rhs: ty) => {
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__impl_slice_eq1! { $Lhs, $Rhs, Sized }
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};
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($Lhs: ty, $Rhs: ty, $Bound: ident) => {
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#[stable(feature = "rust1", since = "1.0.0")]
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impl<'a, 'b, A: $Bound, B> PartialEq<$Rhs> for $Lhs where A: PartialEq<B> {
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#[inline]
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fn eq(&self, other: &$Rhs) -> bool { self[..] == other[..] }
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#[inline]
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fn ne(&self, other: &$Rhs) -> bool { self[..] != other[..] }
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}
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}
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}
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#[macro_export]
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macro_rules! __impl_slice_eq2 {
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($Lhs: ty, $Rhs: ty) => {
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__impl_slice_eq2! { $Lhs, $Rhs, Sized }
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};
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($Lhs: ty, $Rhs: ty, $Bound: ident) => {
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__impl_slice_eq1!($Lhs, $Rhs, $Bound);
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#[stable(feature = "rust1", since = "1.0.0")]
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impl<'a, 'b, A: $Bound, B> PartialEq<$Lhs> for $Rhs where B: PartialEq<A> {
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#[inline]
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fn eq(&self, other: &$Lhs) -> bool { self[..] == other[..] }
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#[inline]
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fn ne(&self, other: &$Lhs) -> bool { self[..] != other[..] }
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}
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}
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}
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