Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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70 lines
3.0 KiB
70 lines
3.0 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2023 Google LLC. All rights reserved. |
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// https://developers.google.com/protocol-buffers/ |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google LLC. nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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//! Runtime-internal macros |
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/// Defines a `impl SettableValue<$proxied> for SomeType` body that forwards to |
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/// another implementation. |
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/// |
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/// # Example |
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/// ```ignore |
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/// impl<'a, const N: usize> SettableValue<[u8]> for &'a [u8; N] { |
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/// // Use the `SettableValue<[u8]>` implementation for `&[u8]`: |
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/// impl_forwarding_settable_value!([u8], self => &self[..]); |
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/// } |
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/// ``` |
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macro_rules! impl_forwarding_settable_value { |
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($proxied:ty, $self:ident => $self_forwarding_expr:expr) => { |
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fn set_on( |
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$self, |
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_private: $crate::__internal::Private, |
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mutator: $crate::Mut<'_, $proxied>, |
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) { |
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($self_forwarding_expr).set_on(Private, mutator) |
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} |
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fn set_on_absent( |
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$self, |
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_private: $crate::__internal::Private, |
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absent_mutator: <$proxied as $crate::ProxiedWithPresence>::AbsentMutData<'_>, |
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) -> <$proxied as $crate::ProxiedWithPresence>::PresentMutData<'_> { |
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($self_forwarding_expr).set_on_absent($crate::__internal::Private, absent_mutator) |
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} |
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fn set_on_present( |
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$self, |
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_private: $crate::__internal::Private, |
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present_mutator: <$proxied as $crate::ProxiedWithPresence>::PresentMutData<'_>, |
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) { |
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($self_forwarding_expr).set_on_present($crate::__internal::Private, present_mutator) |
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} |
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}; |
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} |
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pub(crate) use impl_forwarding_settable_value;
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