/usr/include/google/protobuf
Edit: /usr/include/google/protobuf/generated_message_util.h (9560B)
// 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
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include // Add direct dep on port for pb.cc
#include
#include
#include
#include
#include
#include
#ifdef SWIG
#error "You cannot SWIG proto headers"
#endif
namespace google {
namespace protobuf {
class Arena;
class Message;
namespace io {
class CodedInputStream;
}
namespace internal {
template
inline To DownCast(From* f) {
return PROTOBUF_NAMESPACE_ID::internal::down_cast(f);
}
template
inline To DownCast(From& f) {
return PROTOBUF_NAMESPACE_ID::internal::down_cast(f);
}
PROTOBUF_EXPORT void InitProtobufDefaults();
// 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. 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
bool AllAreInitialized(const RepeatedPtrField& 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
bool AllAreInitializedWeak(const RepeatedPtrField& t) {
for (int i = t.size(); --i >= 0;) {
if (!reinterpret_cast(t)
.Get >(i)
.IsInitialized()) {
return false;
}
}
return true;
}
inline bool IsPresent(const void* base, uint32 hasbit) {
const uint32* has_bits_array = static_cast(base);
return (has_bits_array[hasbit / 32] & (1u << (hasbit & 31))) != 0;
}
inline bool IsOneofPresent(const void* base, uint32 offset, uint32 tag) {
const uint32* oneof =
reinterpret_cast(static_cast(base) + offset);
return *oneof == tag >> 3;
}
typedef void (*SpecialSerializer)(const uint8* base, uint32 offset, uint32 tag,
uint32 has_offset,
io::CodedOutputStream* output);
PROTOBUF_EXPORT void ExtensionSerializer(const uint8* base, uint32 offset,
uint32 tag, uint32 has_offset,
io::CodedOutputStream* output);
PROTOBUF_EXPORT void UnknownFieldSerializerLite(const uint8* base,
uint32 offset, uint32 tag,
uint32 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
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(
DuplicateIfNonNullInternal(reinterpret_cast(message)));
}
template
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(GetOwnedMessageInternal(
message_arena, reinterpret_cast(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 size_{0};
};
// SCCInfo represents information of a strongly connected component of
// mutual dependent messages.
struct PROTOBUF_EXPORT SCCInfoBase {
// We use 0 for the Initialized state, because test eax,eax, jnz is smaller
// and is subject to macro fusion.
enum {
kInitialized = 0, // final state
kRunning = 1,
kUninitialized = -1, // initial state
};
#if defined(_MSC_VER) && !defined(__clang__)
// MSVC doesn't make std::atomic constant initialized. This union trick
// makes it so.
union {
int visit_status_to_make_linker_init;
std::atomic visit_status;
};
#else
std::atomic visit_status;
#endif
int num_deps;
int num_implicit_weak_deps;
void (*init_func)();
// This is followed by an array of num_deps
// const SCCInfoBase* deps[];
};
// Zero-length arrays are a language extension available in GCC and Clang but
// not MSVC.
#ifdef __GNUC__
#define PROTOBUF_ARRAY_SIZE(n) (n)
#else
#define PROTOBUF_ARRAY_SIZE(n) ((n) ? (n) : 1)
#endif
template
struct SCCInfo {
SCCInfoBase base;
// Semantically this is const SCCInfo* which is is a templated type.
// The obvious inheriting from SCCInfoBase mucks with struct initialization.
// Attempts showed the compiler was generating dynamic initialization code.
// This deps array consists of base.num_deps pointers to SCCInfoBase followed
// by base.num_implicit_weak_deps pointers to SCCInfoBase*. We need the extra
// pointer indirection for implicit weak fields. We cannot use a union type
// here, since that would prevent the array from being linker-initialized.
void* deps[PROTOBUF_ARRAY_SIZE(N)];
};
#undef PROTOBUF_ARRAY_SIZE
PROTOBUF_EXPORT void InitSCCImpl(SCCInfoBase* scc);
inline void InitSCC(SCCInfoBase* scc) {
auto status = scc->visit_status.load(std::memory_order_acquire);
if (PROTOBUF_PREDICT_FALSE(status != SCCInfoBase::kInitialized))
InitSCCImpl(scc);
}
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
#endif // GOOGLE_PROTOBUF_GENERATED_MESSAGE_UTIL_H__