| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| |
| // implements the unary operator "op &T" |
| // based on "op T" where T is expected to be `Copy`able |
| macro_rules! forward_ref_unop { |
| (impl $imp:ident, $method:ident for $t:ty) => { |
| forward_ref_unop!(impl $imp, $method for $t, |
| #[stable(feature = "rust1", since = "1.0.0")]); |
| }; |
| (impl $imp:ident, $method:ident for $t:ty, #[$attr:meta]) => { |
| #[$attr] |
| impl<'a> $imp for &'a $t { |
| type Output = <$t as $imp>::Output; |
| |
| #[inline] |
| fn $method(self) -> <$t as $imp>::Output { |
| $imp::$method(*self) |
| } |
| } |
| } |
| } |
| |
| // implements binary operators "&T op U", "T op &U", "&T op &U" |
| // based on "T op U" where T and U are expected to be `Copy`able |
| macro_rules! forward_ref_binop { |
| (impl $imp:ident, $method:ident for $t:ty, $u:ty) => { |
| forward_ref_binop!(impl $imp, $method for $t, $u, |
| #[stable(feature = "rust1", since = "1.0.0")]); |
| }; |
| (impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => { |
| #[$attr] |
| impl<'a> $imp<$u> for &'a $t { |
| type Output = <$t as $imp<$u>>::Output; |
| |
| #[inline] |
| fn $method(self, other: $u) -> <$t as $imp<$u>>::Output { |
| $imp::$method(*self, other) |
| } |
| } |
| |
| #[$attr] |
| impl<'a> $imp<&'a $u> for $t { |
| type Output = <$t as $imp<$u>>::Output; |
| |
| #[inline] |
| fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { |
| $imp::$method(self, *other) |
| } |
| } |
| |
| #[$attr] |
| impl<'a, 'b> $imp<&'a $u> for &'b $t { |
| type Output = <$t as $imp<$u>>::Output; |
| |
| #[inline] |
| fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { |
| $imp::$method(*self, *other) |
| } |
| } |
| } |
| } |
| |
| // implements "T op= &U", based on "T op= U" |
| // where U is expected to be `Copy`able |
| macro_rules! forward_ref_op_assign { |
| (impl $imp:ident, $method:ident for $t:ty, $u:ty) => { |
| forward_ref_op_assign!(impl $imp, $method for $t, $u, |
| #[stable(feature = "op_assign_builtins_by_ref", since = "1.22.0")]); |
| }; |
| (impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => { |
| #[$attr] |
| impl<'a> $imp<&'a $u> for $t { |
| #[inline] |
| fn $method(&mut self, other: &'a $u) { |
| $imp::$method(self, *other); |
| } |
| } |
| } |
| } |