any.cc

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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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// 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.
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// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
#include <google/protobuf/any.h>
 
#include <google/protobuf/arenastring.h>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/generated_message_util.h>
#include <google/protobuf/message.h>
 
#include <google/protobuf/port_def.inc>
 
namespace google {
namespace protobuf {
namespace internal {
 
void AnyMetadata::PackFrom(const Message& message) {
  PackFrom(message, kTypeGoogleApisComPrefix);
}
 
void AnyMetadata::PackFrom(const Message& message,
                           const std::string& type_url_prefix) {
  type_url_->SetNoArena(
      &::PROTOBUF_NAMESPACE_ID::internal::GetEmptyString(),
      GetTypeUrl(message.GetDescriptor()->full_name(), type_url_prefix));
  message.SerializeToString(value_->MutableNoArena(
      &::PROTOBUF_NAMESPACE_ID::internal::GetEmptyStringAlreadyInited()));
}
 
bool AnyMetadata::UnpackTo(Message* message) const {
  if (!InternalIs(message->GetDescriptor()->full_name())) {
    return false;
  }
  return message->ParseFromString(value_->GetNoArena());
}
 
bool GetAnyFieldDescriptors(const Message& message,
                            const FieldDescriptor** type_url_field,
                            const FieldDescriptor** value_field) {
  const Descriptor* descriptor = message.GetDescriptor();
  if (descriptor->full_name() != kAnyFullTypeName) {
    return false;
  }
  *type_url_field = descriptor->FindFieldByNumber(1);
  *value_field = descriptor->FindFieldByNumber(2);
  return (*type_url_field != NULL &&
          (*type_url_field)->type() == FieldDescriptor::TYPE_STRING &&
          *value_field != NULL &&
          (*value_field)->type() == FieldDescriptor::TYPE_BYTES);
}
 
}  // namespace internal
}  // namespace protobuf
}  // namespace google