// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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.

#pragma once

#include <gen_cpp/Types_types.h>

#include <stddef.h>

#include <memory>

#include <string>

#include "common/object_pool.h"

#include "common/status.h"

#include "core/data_type/data_type.h"

#include "core/data_type_serde/data_type_serde.h"

#include "exprs/aggregate/aggregate_function.h"

#include "runtime/memory/mem_tracker.h"

#include "runtime/runtime_state.h"

namespace doris {

class TFoldConstantParams;

class TQueryGlobals;

class PConstantExprResult;

class RuntimeProfile;

class TQueryOptions;

// This class used to fold constant expr from fe

class FoldConstantExecutor {

public:

    // fold constant vexpr

    Status fold_constant_vexpr(const TFoldConstantParams& params, PConstantExprResult* response);

    std::string query_id_string() { return print_id(_query_id); }

private:

    // init runtime_state and mem_tracker

    Status _init(const TQueryGlobals& query_globals, const TQueryOptions& query_options);

    // prepare expr

    template <typename Context>

    Status _prepare_and_open(Context* ctx);

    Status _get_result(void* src, size_t size, const DataTypePtr& type, ColumnPtr column_ptr,

                       DataTypePtr column_type, std::string& result,

                       const DataTypeSerDe::FormatOptions& options);

    std::unique_ptr<RuntimeState> _runtime_state;

    std::shared_ptr<MemTrackerLimiter> _mem_tracker;

    RuntimeProfile* _runtime_profile = nullptr;

    ObjectPool _pool;

    TUniqueId _query_id;

};

} // namespace doris