src/google/protobuf/any.cc

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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//
//     * 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
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// in the documentation and/or other materials provided with the
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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#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>

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

namespace google {
namespace protobuf {
namespace internal {

bool AnyMetadata::PackFrom(Arena* arena, const Message& message) {
  return PackFrom(arena, message, kTypeGoogleApisComPrefix);
}

bool AnyMetadata::PackFrom(Arena* arena, const Message& message,
                           StringPiece type_url_prefix) {
  type_url_->Set(
      GetTypeUrl(message.GetDescriptor()->full_name(), type_url_prefix), arena);
  return message.SerializeToString(value_->Mutable(arena));
}

bool AnyMetadata::UnpackTo(Message* message) const {
  if (!InternalIs(message->GetDescriptor()->full_name())) {
    return false;
  }
  return message->ParseFromString(value_->Get());
}

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 != nullptr &&
          (*type_url_field)->type() == FieldDescriptor::TYPE_STRING &&
          *value_field != nullptr &&
          (*value_field)->type() == FieldDescriptor::TYPE_BYTES);
}

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

#include <google/protobuf/port_undef.inc>