text: // 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.
  
  #include <google/protobuf/generated_message_table_driven.h>
  
  #include <type_traits>
  
  #include <google/protobuf/stubs/casts.h>
  #include <google/protobuf/generated_message_table_driven_lite.h>
  #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
  #include <google/protobuf/metadata.h>
  #include <google/protobuf/repeated_field.h>
  #include <google/protobuf/wire_format.h>
  #include <google/protobuf/wire_format_lite.h>
  #include <google/protobuf/wire_format_lite_inl.h>
  
  namespace google {
  namespace protobuf {
  namespace internal {
  
  namespace {
  
  UnknownFieldSet* MutableUnknownFields(MessageLite* msg, int64 arena_offset) {
    return Raw<InternalMetadataWithArena>(msg, arena_offset)
        ->mutable_unknown_fields();
  }
  
  struct UnknownFieldHandler {
    static bool Skip(MessageLite* msg, const ParseTable& table,
                     io::CodedInputStream* input,
                     int tag) {
      GOOGLE_DCHECK(table.unknown_field_set);
  
      return WireFormat::SkipField(input, tag,
          MutableUnknownFields(msg, table.arena_offset));
    }
  
    static void Varint(MessageLite* msg, const ParseTable& table,
                       int tag, int value) {
      GOOGLE_DCHECK(table.unknown_field_set);
  
      MutableUnknownFields(msg, table.arena_offset)->AddVarint(
          WireFormatLite::GetTagFieldNumber(tag), value);
    }
  
    static bool ParseExtension(
        MessageLite* msg, const ParseTable& table,
        io::CodedInputStream* input, int tag) {
      ExtensionSet* extensions = GetExtensionSet(msg, table.extension_offset);
      if (extensions == NULL) {
        return false;
      }
  
      const Message* prototype = down_cast<const Message*>(
          table.default_instance());
  
      GOOGLE_DCHECK(prototype != NULL);
      GOOGLE_DCHECK(table.unknown_field_set);
      UnknownFieldSet* unknown_fields =
          MutableUnknownFields(msg, table.arena_offset);
  
      return extensions->ParseField(tag, input, prototype, unknown_fields);
    }
  };
  
  }  // namespace
  
  bool MergePartialFromCodedStream(
      MessageLite* msg, const ParseTable& table, io::CodedInputStream* input) {
    return MergePartialFromCodedStreamImpl<UnknownFieldHandler,
                                           InternalMetadataWithArena>(msg, table,
                                                                      input);
  }
  
  }  // namespace internal
  }  // namespace protobuf
  }  // namespace google
  