serial.h

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// Copyright (C) 2011-2015,2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef SERIAL_H
#define SERIAL_H 1

#include <stdint.h>
#include <iostream>

namespace isc {
namespace dns {

const uint32_t MAX_SERIAL_INCREMENT = 2147483647;

const uint64_t MAX_SERIAL_VALUE = 4294967296ull;

class Serial {
public:
    explicit Serial(uint32_t value) : value_(value) {}

    Serial(const Serial& other) : value_(other.getValue()) {}

    Serial& operator=(const Serial& other) {
        value_ = other.getValue();
        return (*this);
    }

    void operator=(uint32_t value) { value_ = value; }

    uint32_t getValue() const { return (value_); }

    bool operator==(const Serial& other) const;

    bool operator!=(const Serial& other) const;

    bool operator<(const Serial& other) const;

    bool operator<=(const Serial& other) const;

    bool operator>(const Serial& other) const;

    bool operator>=(const Serial& other) const;

    Serial operator+(const Serial& other) const;

    Serial operator+(uint32_t other_val) const;

private:
    uint32_t value_;
};

std::ostream& operator<<(std::ostream& os, const Serial& serial);

} // end namespace dns
} // end namespace isc

#endif // SERIAL_H