Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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50 lines
1.2 KiB
50 lines
1.2 KiB
4 months ago
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// Protocol Buffers - Google's data interchange format
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// Copyright 2024 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef GOOGLE_PROTOBUF_HPB_TEMPLATE_HELP_H__
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#define GOOGLE_PROTOBUF_HPB_TEMPLATE_HELP_H__
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#include <type_traits>
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#include "google/protobuf/hpb/ptr.h"
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namespace hpb {
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namespace internal {
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template <typename T>
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struct RemovePtr;
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template <typename T>
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struct RemovePtr<Ptr<T>> {
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using type = T;
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};
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template <typename T>
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struct RemovePtr<T*> {
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using type = T;
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};
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template <typename T>
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using RemovePtrT = typename RemovePtr<T>::type;
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template <typename T, typename U = RemovePtrT<T>,
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typename = std::enable_if_t<!std::is_const_v<U>>>
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using PtrOrRaw = T;
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template <typename T>
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using EnableIfHpbClass = std::enable_if_t<
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std::is_base_of<typename T::Access, T>::value &&
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std::is_base_of<typename T::Access, typename T::ExtendableType>::value>;
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template <typename T>
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using EnableIfMutableProto = std::enable_if_t<!std::is_const<T>::value>;
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} // namespace internal
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} // namespace hpb
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#endif // GOOGLE_PROTOBUF_HPB_TEMPLATE_HELP_H__
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