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Diffstat (limited to 'toolkit/components/protobuf/src/google/protobuf/generated_message_util.h')
-rw-r--r-- | toolkit/components/protobuf/src/google/protobuf/generated_message_util.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/toolkit/components/protobuf/src/google/protobuf/generated_message_util.h b/toolkit/components/protobuf/src/google/protobuf/generated_message_util.h new file mode 100644 index 0000000000..71d15cdebc --- /dev/null +++ b/toolkit/components/protobuf/src/google/protobuf/generated_message_util.h @@ -0,0 +1,214 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. +// +// This file contains miscellaneous helper code used by generated code -- +// including lite types -- but which should not be used directly by users. + +#ifndef GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ +#define GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ + +#include <assert.h> + +#include <atomic> +#include <climits> +#include <string> +#include <vector> + +#include <google/protobuf/stubs/common.h> +#include <google/protobuf/stubs/once.h> // Add direct dep on port for pb.cc +#include <google/protobuf/port.h> +#include <google/protobuf/stubs/strutil.h> +#include <google/protobuf/any.h> +#include <google/protobuf/has_bits.h> +#include <google/protobuf/implicit_weak_message.h> +#include <google/protobuf/message_lite.h> +#include <google/protobuf/repeated_field.h> +#include <google/protobuf/wire_format_lite.h> +#include <google/protobuf/stubs/casts.h> + +// Must be included last. +#include <google/protobuf/port_def.inc> + +#ifdef SWIG +#error "You cannot SWIG proto headers" +#endif + +namespace google { +namespace protobuf { + +class Arena; +class Message; + +namespace io { +class CodedInputStream; +} + +namespace internal { + +template <typename To, typename From> +inline To DownCast(From* f) { + return PROTOBUF_NAMESPACE_ID::internal::down_cast<To>(f); +} +template <typename To, typename From> +inline To DownCast(From& f) { + return PROTOBUF_NAMESPACE_ID::internal::down_cast<To>(f); +} + + +// This fastpath inlines a single branch instead of having to make the +// InitProtobufDefaults function call. +// It also generates less inlined code than a function-scope static initializer. +PROTOBUF_EXPORT extern std::atomic<bool> init_protobuf_defaults_state; +PROTOBUF_EXPORT void InitProtobufDefaultsSlow(); +PROTOBUF_EXPORT inline void InitProtobufDefaults() { + if (PROTOBUF_PREDICT_FALSE( + !init_protobuf_defaults_state.load(std::memory_order_acquire))) { + InitProtobufDefaultsSlow(); + } +} + +// This used by proto1 +PROTOBUF_EXPORT inline const std::string& GetEmptyString() { + InitProtobufDefaults(); + return GetEmptyStringAlreadyInited(); +} + + +// True if IsInitialized() is true for all elements of t. Type is expected +// to be a RepeatedPtrField<some message type>. It's useful to have this +// helper here to keep the protobuf compiler from ever having to emit loops in +// IsInitialized() methods. We want the C++ compiler to inline this or not +// as it sees fit. +template <typename Msg> +bool AllAreInitialized(const RepeatedPtrField<Msg>& t) { + for (int i = t.size(); --i >= 0;) { + if (!t.Get(i).IsInitialized()) return false; + } + return true; +} + +// "Weak" variant of AllAreInitialized, used to implement implicit weak fields. +// This version operates on MessageLite to avoid introducing a dependency on the +// concrete message type. +template <class T> +bool AllAreInitializedWeak(const RepeatedPtrField<T>& t) { + for (int i = t.size(); --i >= 0;) { + if (!reinterpret_cast<const RepeatedPtrFieldBase&>(t) + .Get<ImplicitWeakTypeHandler<T> >(i) + .IsInitialized()) { + return false; + } + } + return true; +} + +inline bool IsPresent(const void* base, uint32_t hasbit) { + const uint32_t* has_bits_array = static_cast<const uint32_t*>(base); + return (has_bits_array[hasbit / 32] & (1u << (hasbit & 31))) != 0; +} + +inline bool IsOneofPresent(const void* base, uint32_t offset, uint32_t tag) { + const uint32_t* oneof = reinterpret_cast<const uint32_t*>( + static_cast<const uint8_t*>(base) + offset); + return *oneof == tag >> 3; +} + +typedef void (*SpecialSerializer)(const uint8_t* base, uint32_t offset, + uint32_t tag, uint32_t has_offset, + io::CodedOutputStream* output); + +PROTOBUF_EXPORT void ExtensionSerializer(const MessageLite* extendee, + const uint8_t* ptr, uint32_t offset, + uint32_t tag, uint32_t has_offset, + io::CodedOutputStream* output); +PROTOBUF_EXPORT void UnknownFieldSerializerLite(const uint8_t* base, + uint32_t offset, uint32_t tag, + uint32_t has_offset, + io::CodedOutputStream* output); + +PROTOBUF_EXPORT MessageLite* DuplicateIfNonNullInternal(MessageLite* message); +PROTOBUF_EXPORT MessageLite* GetOwnedMessageInternal(Arena* message_arena, + MessageLite* submessage, + Arena* submessage_arena); +PROTOBUF_EXPORT void GenericSwap(MessageLite* m1, MessageLite* m2); +// We specialize GenericSwap for non-lite messages to benefit from reflection. +PROTOBUF_EXPORT void GenericSwap(Message* m1, Message* m2); + +template <typename T> +T* DuplicateIfNonNull(T* message) { + // The casts must be reinterpret_cast<> because T might be a forward-declared + // type that the compiler doesn't know is related to MessageLite. + return reinterpret_cast<T*>( + DuplicateIfNonNullInternal(reinterpret_cast<MessageLite*>(message))); +} + +template <typename T> +T* GetOwnedMessage(Arena* message_arena, T* submessage, + Arena* submessage_arena) { + // The casts must be reinterpret_cast<> because T might be a forward-declared + // type that the compiler doesn't know is related to MessageLite. + return reinterpret_cast<T*>(GetOwnedMessageInternal( + message_arena, reinterpret_cast<MessageLite*>(submessage), + submessage_arena)); +} + +// Hide atomic from the public header and allow easy change to regular int +// on platforms where the atomic might have a perf impact. +class PROTOBUF_EXPORT CachedSize { + public: + int Get() const { return size_.load(std::memory_order_relaxed); } + void Set(int size) { size_.store(size, std::memory_order_relaxed); } + + private: + std::atomic<int> size_{0}; +}; + +PROTOBUF_EXPORT void DestroyMessage(const void* message); +PROTOBUF_EXPORT void DestroyString(const void* s); +// Destroy (not delete) the message +inline void OnShutdownDestroyMessage(const void* ptr) { + OnShutdownRun(DestroyMessage, ptr); +} +// Destroy the string (call std::string destructor) +inline void OnShutdownDestroyString(const std::string* ptr) { + OnShutdownRun(DestroyString, ptr); +} + +} // namespace internal +} // namespace protobuf +} // namespace google + +#include <google/protobuf/port_undef.inc> + +#endif // GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__ |