// 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 <stddef.h>

#include <memory>

#include <string>

#include <vector>

#include "common/status.h"

#include "core/block/column_numbers.h"

#include "core/column/column_array.h"

#include "core/data_type/data_type.h"

#include "core/data_type/data_type_array.h"

#include "core/data_type/data_type_string.h"

#include "core/types.h"

#include "exprs/function/function.h"

#include "exprs/function/simple_function_factory.h"

#include "exprs/function_context.h"

#include "storage/index/inverted/inverted_index_parser.h"

#include "storage/index/inverted/inverted_index_reader.h"

namespace doris {

class Block;

} // namespace doris

namespace doris {

class FunctionTokenize : public IFunction {

public:

    static constexpr auto name = "tokenize";

    static FunctionPtr create() { return std::make_shared<FunctionTokenize>(); }

    using NullMapType = PaddedPODArray<UInt8>;

    String get_name() const override { return name; }

    bool is_variadic() const override { return false; }

    size_t get_number_of_arguments() const override { return 2; }

    DataTypePtr get_return_type_impl(const DataTypes& arguments) const override {

        DCHECK(is_string_type(arguments[0]->get_primitive_type()))

                << "first argument for function: " << name << " should be string"

                << " and arguments[0] is " << arguments[0]->get_name();

        DCHECK(is_string_type(arguments[1]->get_primitive_type()))

                << "second argument for function: " << name << " should be string"

                << " and arguments[1] is " << arguments[1]->get_name();

        return std::make_shared<DataTypeString>();

    }

    void _do_tokenize(const ColumnString& src_column_string,

                      const InvertedIndexAnalyzerCtx& analyzer_ctx, bool support_phrase,

                      const MutableColumnPtr& dest_column_ptr) const;

    void _do_tokenize_none(const ColumnString& src_column_string,

                           const MutableColumnPtr& dest_column_ptr) const;

    Status execute_impl(FunctionContext* /*context*/, Block& block, const ColumnNumbers& arguments,

                        uint32_t result, size_t /*input_rows_count*/) const override;

};

} // namespace doris