random_generator.h

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#pragma once
 
#include <random>
#include <type_traits>
 
namespace faker
{
template <typename T>
    requires std::uniform_random_bit_generator<T>
 
class RandomGenerator
{
public:
    RandomGenerator() : generator_{T(std::random_device{}())} {}
 
    explicit RandomGenerator(const T& other) : generator_{other} {}
 
    ~RandomGenerator() = default;
 
    RandomGenerator(const RandomGenerator&) = default;
    RandomGenerator(RandomGenerator&&) = default;
    RandomGenerator& operator=(const RandomGenerator&) = default;
    RandomGenerator& operator=(RandomGenerator&&) = default;
 
    template <typename Dist>
        requires std::is_invocable_r_v<int, Dist&, T&>
 
    typename T::result_type operator()(Dist&& dist)
    {
        return static_cast<typename T::result_type>(std::forward<Dist>(dist)(generator_));
    }
 
private:
    T generator_;
};
}