103 lines
3.2 KiB
Rust
103 lines
3.2 KiB
Rust
// Copyright 2016 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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// implements the unary operator "op &T"
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// based on "op T" where T is expected to be `Copy`able
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macro_rules! forward_ref_unop {
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(impl $imp:ident, $method:ident for $t:ty) => {
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forward_ref_unop!(impl $imp, $method for $t,
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#[stable(feature = "rust1", since = "1.0.0")]);
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};
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(impl $imp:ident, $method:ident for $t:ty, #[$attr:meta]) => {
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#[$attr]
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impl<'a> $imp for &'a $t {
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type Output = <$t as $imp>::Output;
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#[inline]
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fn $method(self) -> <$t as $imp>::Output {
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$imp::$method(*self)
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}
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}
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}
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}
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// implements binary operators "&T op U", "T op &U", "&T op &U"
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// based on "T op U" where T and U are expected to be `Copy`able
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macro_rules! forward_ref_binop {
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(impl $imp:ident, $method:ident for $t:ty, $u:ty) => {
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forward_ref_binop!(impl $imp, $method for $t, $u,
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#[stable(feature = "rust1", since = "1.0.0")]);
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};
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(impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => {
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#[$attr]
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impl<'a> $imp<$u> for &'a $t {
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type Output = <$t as $imp<$u>>::Output;
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#[inline]
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fn $method(self, other: $u) -> <$t as $imp<$u>>::Output {
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$imp::$method(*self, other)
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}
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}
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#[$attr]
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impl<'a> $imp<&'a $u> for $t {
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type Output = <$t as $imp<$u>>::Output;
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#[inline]
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fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output {
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$imp::$method(self, *other)
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}
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}
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#[$attr]
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impl<'a, 'b> $imp<&'a $u> for &'b $t {
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type Output = <$t as $imp<$u>>::Output;
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#[inline]
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fn $method(self, other: &'a $u) -> <$t as $imp<$u>>::Output {
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$imp::$method(*self, *other)
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}
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}
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}
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}
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// implements "T op= &U", based on "T op= U"
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// where U is expected to be `Copy`able
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macro_rules! forward_ref_op_assign {
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(impl $imp:ident, $method:ident for $t:ty, $u:ty) => {
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forward_ref_op_assign!(impl $imp, $method for $t, $u,
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#[stable(feature = "op_assign_builtins_by_ref", since = "1.22.0")]);
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};
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(impl $imp:ident, $method:ident for $t:ty, $u:ty, #[$attr:meta]) => {
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#[$attr]
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impl<'a> $imp<&'a $u> for $t {
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#[inline]
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fn $method(&mut self, other: &'a $u) {
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$imp::$method(self, *other);
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}
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}
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}
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}
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#[cfg(stage0)]
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macro_rules! public_in_stage0 {
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( { $(#[$attr:meta])* } $($Item: tt)*) => {
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$(#[$attr])* pub $($Item)*
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}
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}
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#[cfg(not(stage0))]
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macro_rules! public_in_stage0 {
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( { $(#[$attr:meta])* } $($Item: tt)*) => {
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$(#[$attr])* pub(crate) $($Item)*
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}
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}
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