////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2018 ArangoDB GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Jan Christoph Uhde
////////////////////////////////////////////////////////////////////////////////

#include "ReturnExecutor.h"
#include "Aql/AqlValue.h"
#include "Aql/OutputAqlItemRow.h"
#include "Aql/SingleRowFetcher.h"
#include "Basics/Common.h"

#include <algorithm>

using namespace arangodb;
using namespace arangodb::aql;

ReturnExecutorInfos::ReturnExecutorInfos(RegisterId inputRegister, RegisterId nrInputRegisters,
                                         RegisterId nrOutputRegisters, bool doCount)
    : ExecutorInfos(make_shared_unordered_set({inputRegister}),
                    make_shared_unordered_set({0}), nrInputRegisters, nrOutputRegisters,
                    std::unordered_set<RegisterId>{} /*to clear*/,
                    std::unordered_set<RegisterId>{} /*to keep*/
                    ),
      _inputRegisterId(inputRegister),
      _doCount(doCount) {}

ReturnExecutor::ReturnExecutor(Fetcher& fetcher, ReturnExecutorInfos& infos)
    : _infos(infos), _fetcher(fetcher) {}

ReturnExecutor::~ReturnExecutor() = default;