// 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 <unicode/utf8.h>

#include <string_view>

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

namespace doris::segment_v2::inverted_index {

class DorisTokenizer : public Tokenizer, public DorisTokenStream {

public:

    DorisTokenizer() = default;

    ~DorisTokenizer() override = default;

    void set_reader(const ReaderPtr& in) {

        if (in == nullptr) {

            throw Exception(ErrorCode::INVALID_ARGUMENT, "reader must not be null");

        }

        _in_pending = in;

    }

    using Tokenizer::reset;

    // Only use the parameterless reset method

    void reset() override { _in = _in_pending; };

protected:

    ReaderPtr _in;

    ReaderPtr _in_pending;

};

using TokenizerPtr = std::shared_ptr<DorisTokenizer>;

} // namespace doris::segment_v2::inverted_index