/*
 * Counter.hpp
 *
 *  Created on: 22 èþë. 2019 ã.
 *      Author: titov
 */

#ifndef SOURCE_COMMON_COUNTER_HPP_
#define SOURCE_COMMON_COUNTER_HPP_

template<typename T>
struct Counter {

    Counter( T max_value = T() );

    explicit operator bool() const;

    void operator++();

    void operator=( T rh );

    Counter<T> & operator=( const Counter<T> & rh );

    T value() const { return current_value; }

private:
    T max_value;
    T current_value;
};

template<typename T>
inline Counter<T>::Counter( T max_value ) : max_value(max_value), current_value(0) {}

template<typename T>
inline Counter<T>::operator bool() const {

    return current_value == max_value;

}

template<typename T>
inline void Counter<T>::operator++() {

    if( current_value < max_value )
        ++current_value;

}

template<typename T>
inline void Counter<T>::operator=( T rh ) {

    current_value = rh;

}

template<typename T>
inline Counter<T> & Counter<T>::operator=( const Counter<T> & rh ) {

    max_value = rh.max_value;
    current_value = rh.current_value;

    return *this;
}

#endif /* SOURCE_COMMON_COUNTER_HPP_ */