generated_message_util.cc | Explore in Territory

// 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: [email protected] (Kenton Varda)
//  Based on original Protocol Buffers design by
//  Sanjay Ghemawat, Jeff Dean, and others.

#include <google/protobuf/generated_message_util.h>

#include <atomic>
#include <limits>
#include <vector>

#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream_impl_lite.h>
#include <google/protobuf/arenastring.h>
#include <google/protobuf/extension_set.h>
#include <google/protobuf/message_lite.h>
#include <google/protobuf/metadata_lite.h>
#include <google/protobuf/repeated_field.h>
#include <google/protobuf/wire_format_lite.h>

// Must be included last
#include <google/protobuf/port_def.inc>

PROTOBUF_PRAGMA_INIT_SEG


namespace google {
namespace protobuf {
namespace internal {

void DestroyMessage(const void* message) { … }
void DestroyString(const void* s) { … }

PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT
    PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ExplicitlyConstructedArenaString
        fixed_address_empty_string{ … };  // NOLINT


PROTOBUF_CONSTINIT bool init_protobuf_defaults_state{ … };
void InitProtobufDefaultsSlow() { … }
// Force the initialization of the empty string.
// Normally, registration would do it, but we don't have any guarantee that
// there is any object with reflection.
PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 static std::true_type init_empty_string = …;

const std::string& GetEmptyString() { … }

size_t StringSpaceUsedExcludingSelfLong(const std::string& str) { … }

template <typename T>
const T& Get(const void* ptr) { … }

// PrimitiveTypeHelper is a wrapper around the interface of WireFormatLite.
// WireFormatLite has a very inconvenient interface with respect to template
// meta-programming. This class wraps the different named functions into
// a single Serialize / SerializeToArray interface.
template <int type>
struct PrimitiveTypeHelper;

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_BOOL> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_INT32> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_SINT32> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_UINT32> { … };
template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_INT64> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_SINT64> { … };
template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_UINT64> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED32> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED64> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_ENUM>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_INT32> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_SFIXED32>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED32> { … };
template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_SFIXED64>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED64> { … };
template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_FLOAT>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED32> { … };
template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_DOUBLE>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_FIXED64> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_STRING> { … };

template <>
struct PrimitiveTypeHelper<WireFormatLite::TYPE_BYTES>
    : PrimitiveTypeHelper<WireFormatLite::TYPE_STRING> { … };

// We want to serialize to both CodedOutputStream and directly into byte arrays
// without duplicating the code. In fact we might want extra output channels in
// the future.
template <typename O, int type>
struct OutputHelper;

template <int type, typename O>
void SerializeTo(const void* ptr, O* output) { … }

template <typename O>
void WriteTagTo(uint32_t tag, O* output) { … }

template <typename O>
void WriteLengthTo(uint32_t length, O* output) { … }

// Specialization for coded output stream
OutputHelper<io::CodedOutputStream, type>;

// Specialization for writing into a plain array
struct ArrayOutput { … };

OutputHelper<ArrayOutput, type>;

void SerializeMessageNoTable(const MessageLite* msg,
                             io::CodedOutputStream* output) { … }

void SerializeMessageNoTable(const MessageLite* msg, ArrayOutput* output) { … }

// We need to use a helper class to get access to the private members
class AccessorHelper { … };

void SerializeNotImplemented(int field) { … }

// When switching to c++11 we should make these constexpr functions
#define SERIALIZE_TABLE_OP(type, type_class) …

template <int type>
bool IsNull(const void* ptr) { … }

template <>
bool IsNull<WireFormatLite::TYPE_STRING>(const void* ptr) { … }

template <>
bool IsNull<WireFormatLite::TYPE_BYTES>(const void* ptr) { … }

template <>
bool IsNull<WireFormatLite::TYPE_GROUP>(const void* ptr) { … }

template <>
bool IsNull<WireFormatLite::TYPE_MESSAGE>(const void* ptr) { … }

void ExtensionSerializer(const MessageLite* extendee, const uint8_t* ptr,
                         uint32_t offset, uint32_t tag, uint32_t has_offset,
                         io::CodedOutputStream* output) { … }

void UnknownFieldSerializerLite(const uint8_t* ptr, uint32_t offset,
                                uint32_t /*tag*/, uint32_t /*has_offset*/,
                                io::CodedOutputStream* output) { … }

MessageLite* DuplicateIfNonNullInternal(MessageLite* message) { … }

void GenericSwap(MessageLite* m1, MessageLite* m2) { … }

// Returns a message owned by this Arena.  This may require Own()ing or
// duplicating the message.
MessageLite* GetOwnedMessageInternal(Arena* message_arena,
                                     MessageLite* submessage,
                                     Arena* submessage_arena) { … }

}  // namespace internal
}  // namespace protobuf
}  // namespace google

#include <google/protobuf/port_undef.inc>
chromium/third_party/protobuf/src/google/protobuf/generated_message_util.cc
