Time.h

// Copyright (c) 2016-2018 Kiwano - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
#pragma once
#include <kiwano/core/Duration.h>
#include <ctime>
 
namespace kiwano
{
 
struct KGE_API Time
{
    Time();
 
    bool IsZero() const;
 
    static Time Now() noexcept;
 
    const Duration operator-(const Time&) const;
 
    const Time operator+(const Duration&) const;
    const Time operator-(const Duration&) const;
 
    Time& operator+=(const Duration&);
    Time& operator-=(const Duration&);
 
private:
    Time(int64_t ms);
 
private:
    int64_t dur_;
};
 
struct KGE_API ClockTime
{
    ClockTime();
 
    bool IsZero() const;
 
    int64_t GetTimeStamp() const;
 
    int64_t GetMillisecondsSinceEpoch() const;
 
    std::time_t GetCTime() const;
 
    static ClockTime Now() noexcept;
 
    static ClockTime FromTimeStamp(int64_t timestamp) noexcept;
 
    const Duration operator-(const ClockTime&) const;
 
    const ClockTime operator+(const Duration&) const;
    const ClockTime operator-(const Duration&) const;
 
    ClockTime& operator+=(const Duration&);
    ClockTime& operator-=(const Duration&);
 
private:
    ClockTime(int64_t ms_since_epoch);
 
private:
    int64_t ms_since_epoch_;
};
 
inline bool Time::IsZero() const
{
    return dur_ == 0;
}
 
inline bool ClockTime::IsZero() const
{
    return ms_since_epoch_ == 0;
}
 
}  // namespace kiwano