Time.hpp

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/*****************************************************************/
#pragma once
 
#include <chrono>
 
#include "Util.hpp"
 
SDLU_BEGIN
 
typedef Int64       TimeRep;
typedef std::nano   TimePeriod;
 
class Time {
public:
    Time();
 
    template<typename Rep = Int64, typename Period = std::ratio<1>> 
    Rep AsValue() const;
 
    float AsSeconds() const;
 
    Int32 AsMilliseconds() const;
 
    Int64 AsMicroseconds() const;
 
 
    template<typename Rep = Int64, typename Period = std::ratio<1>> 
    std::chrono::duration<Rep, Period> AsChrono() const;
 
    std::chrono::seconds AsChronoSeconds() const;
 
    std::chrono::milliseconds AsChronoMilliseconds() const;
 
    std::chrono::microseconds AsChronoMicroseconds() const;
 
 
    template<typename Rep = Int64, typename Period = std::ratio<1>> 
    static Time Create(const Rep& duration);
 
    template<typename Rep = Int64, typename Period = std::ratio<1>> 
    static Time Create(const std::chrono::duration<Rep, Period>& duration);
 
    static Time Now();
 
    friend Time Seconds(float seconds);
 
    friend Time Milliseconds(Int32 milliseconds);
 
    friend Time Microseconds(Int64 microseconds);
 
 
    friend bool operator==(const Time& left, const Time& right);
 
    friend bool operator!=(const Time& left, const Time& right);
 
    friend bool operator<(const Time& left, const Time& right);
 
    friend bool operator>(const Time& left, const Time& right);
 
    friend bool operator<=(const Time& left, const Time& right);
 
    friend bool operator>=(const Time& left, const Time& right);
 
 
    friend Time operator-(const Time& right);
 
 
    friend Time operator+(const Time& left, const Time& right);
 
    friend Time& operator+=(Time& left, const Time& right);
 
 
    friend Time operator-(const Time& left, const Time& right);
 
    friend Time& operator-=(Time& left, const Time& right);
 
 
    friend Time operator*(const Time& left, float right);
 
    friend Time operator*(const Time& left, Int64 right);
 
    friend Time operator*(float left, const Time& right);
 
    friend Time operator*(Int64 left, const Time& right);
 
    friend Time& operator*=(Time& left, float right);
 
    friend Time& operator*=(Time& left, Int64 right);
 
 
    friend Time operator/(const Time& left, float right);
 
    friend Time operator/(const Time& left, Int64 right);
 
    friend Time& operator/=(Time& left, float right);
 
    friend Time& operator/=(Time& left, Int64 right);
 
    friend float operator/(const Time& left, const Time& right);
 
    friend Time operator%(const Time& left, const Time& right);
 
    friend Time& operator%=(Time& left, const Time& right);
 
private:
    std::chrono::duration<TimeRep, TimePeriod> microseconds;
};
 
 
template<typename Rep, typename Period>
inline Rep Time::AsValue() const
{
    return std::chrono::duration_cast<std::chrono::duration<Rep, Period>>(microseconds).count();
}
 
template<typename Rep, typename Period>
inline std::chrono::duration<Rep, Period> Time::AsChrono() const
{
    return std::chrono::duration_cast<std::chrono::duration<Rep, Period>>(microseconds);
}
 
template<typename Rep, typename Period>
inline Time Time::Create(const Rep& duration)
{
    Time newTime;
    newTime.microseconds = std::chrono::duration_cast<std::chrono::duration<TimeRep, TimePeriod>>(std::chrono::duration<Rep, Period>(duration));
    return newTime;
}
 
template<typename Rep, typename Period>
inline Time Time::Create(const std::chrono::duration<Rep, Period>& duration)
{
    Time newTime;
    newTime.microseconds = std::chrono::duration_cast<std::chrono::duration<TimeRep, TimePeriod>>(duration);
    return newTime;
}
 
inline Time Time::Now()
{
    return Create(std::chrono::steady_clock::now().time_since_epoch());
}
 
SDLU_END