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1 | // Copyright 2016 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 | // implements the unary operator "op &T" | |
13 | // based on "op T" where T is expected to be `Copy`able | |
14 | macro_rules! forward_ref_unop { | |
15 | (impl $imp:ident, $method:ident for $t:ty) => { | |
8bb4bdeb XL |
16 | forward_ref_unop!(impl $imp, $method for $t, |
17 | #[stable(feature = "rust1", since = "1.0.0")]); | |
18 | }; | |
19 | (impl $imp:ident, $method:ident for $t:ty, #[$attr:meta]) => { | |
20 | #[$attr] | |
c30ab7b3 SL |
21 | impl<'a> $imp for &'a $t { |
22 | type Output = <$t as $imp>::Output; | |
23 | ||
24 | #[inline] | |
25 | fn $method(self) -> <$t as $imp>::Output { | |
26 | $imp::$method(*self) | |
27 | } | |
28 | } | |
29 | } | |
30 | } | |
31 | ||
32 | // implements binary operators "&T op U", "T op &U", "&T op &U" | |
33 | // based on "T op U" where T and U are expected to be `Copy`able | |
34 | macro_rules! forward_ref_binop { | |
35 | (impl $imp:ident, $method:ident for $t:ty, $u:ty) => { | |
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36 | forward_ref_binop!(impl $imp, $method for $t, $u, |
37 | #[stable(feature = "rust1", since = "1.0.0")]); | |
38 | }; | |
39 | (impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => { | |
40 | #[$attr] | |
c30ab7b3 SL |
41 | impl<'a> $imp<$u> for &'a $t { |
42 | type Output = <$t as $imp<$u>>::Output; | |
43 | ||
44 | #[inline] | |
45 | fn $method(self, other: $u) -> <$t as $imp<$u>>::Output { | |
46 | $imp::$method(*self, other) | |
47 | } | |
48 | } | |
49 | ||
8bb4bdeb | 50 | #[$attr] |
c30ab7b3 SL |
51 | impl<'a> $imp<&'a $u> for $t { |
52 | type Output = <$t as $imp<$u>>::Output; | |
53 | ||
54 | #[inline] | |
55 | fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { | |
56 | $imp::$method(self, *other) | |
57 | } | |
58 | } | |
59 | ||
8bb4bdeb | 60 | #[$attr] |
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61 | impl<'a, 'b> $imp<&'a $u> for &'b $t { |
62 | type Output = <$t as $imp<$u>>::Output; | |
63 | ||
64 | #[inline] | |
65 | fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output { | |
66 | $imp::$method(*self, *other) | |
67 | } | |
68 | } | |
69 | } | |
70 | } |