oneof.h

// Copyright 2009-2017 Toby Schneider (http://gobysoft.org/index.wt/people/toby)
//                     GobySoft, LLC (for 2013-)
//                     Massachusetts Institute of Technology (for 2007-2014)
//                     Community contributors (see AUTHORS file)
//
//
// This file is part of the Dynamic Compact Control Language Library
// ("DCCL").
//
// DCCL is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or
// (at your option) any later version.
//
// DCCL is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with DCCL.  If not, see <http://www.gnu.org/licenses/>.
#ifndef DCCLONEOF20210702H
#define DCCLONEOF20210702H
 
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/descriptor.h>
#include "dccl/binary.h"
 
namespace dccl {
 
    inline bool is_part_of_oneof(const google::protobuf::FieldDescriptor* field_desc)
    { return field_desc->containing_oneof(); }
 
    inline int containing_oneof_index(const google::protobuf::FieldDescriptor* field_desc)
    { if(is_part_of_oneof(field_desc)) return field_desc->containing_oneof()->index(); return -1;}
 
    inline int oneof_size(const google::protobuf::OneofDescriptor* oneof_desc)
    { return dccl::ceil_log2(oneof_desc->field_count()+1); }
}
 
#endif