Gauge.h

#ifndef BEAST_INSIGHT_GAUGE_H_INCLUDED
#define BEAST_INSIGHT_GAUGE_H_INCLUDED
 
#include <xrpl/beast/insight/GaugeImpl.h>
 
#include <memory>
 
namespace beast {
namespace insight {
 
class Gauge final
{
public:
    using value_type = GaugeImpl::value_type;
    using difference_type = GaugeImpl::difference_type;
 
    Gauge()
    {
    }
 
    explicit Gauge(std::shared_ptr<GaugeImpl> const& impl) : m_impl(impl)
    {
    }
 
    void
    set(value_type value) const
    {
        if (m_impl)
            m_impl->set(value);
    }
 
    Gauge const&
    operator=(value_type value) const
    {
        set(value);
        return *this;
    }
    void
    increment(difference_type amount) const
    {
        if (m_impl)
            m_impl->increment(amount);
    }
 
    Gauge const&
    operator+=(difference_type amount) const
    {
        increment(amount);
        return *this;
    }
 
    Gauge const&
    operator-=(difference_type amount) const
    {
        increment(-amount);
        return *this;
    }
 
    Gauge const&
    operator++() const
    {
        increment(1);
        return *this;
    }
 
    Gauge const&
    operator++(int) const
    {
        increment(1);
        return *this;
    }
 
    Gauge const&
    operator--() const
    {
        increment(-1);
        return *this;
    }
 
    Gauge const&
    operator--(int) const
    {
        increment(-1);
        return *this;
    }
    std::shared_ptr<GaugeImpl> const&
    impl() const
    {
        return m_impl;
    }
 
private:
    std::shared_ptr<GaugeImpl> m_impl;
};
 
}  // namespace insight
}  // namespace beast
 
#endif