// 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 "core/string_buffer.hpp"

#include "core/types.h"

namespace doris {

/** Write Int64 in variable length format (base128) */

template <typename OUT>

void write_var_int(Int64 x, OUT& ostr) {

    ostr.write_var_uint(static_cast<UInt64>((x << 1) ^ (x >> 63)));

}

/** Read Int64, written in variable length format (base128) */

template <typename IN>

void read_var_int(Int64& x, IN& istr) {

    istr.read_var_uint(*reinterpret_cast<UInt64*>(&x));

    x = (static_cast<UInt64>(x) >> 1) ^ -(x & 1);

}

} // namespace doris