cpp-shared-random-generator/include/random/device.h

//
//  random_impl.h
//  pokemon
//
//  Created by Sam Jaffe on 12/9/17.
//

#pragma once

#include <random/distribution.h>
#include <random/forwards.h>

#define IMPLEMENT_DEVICE(X) X(size_t) X(double) X(int32_t) X(uint32_t)

#define TRIVIAL_RANDOM_DEVICE(T)                                               \
  virtual T apply(Distribution<T> const & dist) { return dist(*this); }

namespace engine::random {
class Device {
public:
  using result_type = uint32_t;
  constexpr static result_type min() { return 0; }
  constexpr static result_type max() { return ~0u; }

  virtual ~Device() = default;
  virtual result_type operator()() = 0;

private:
  friend class Random;
  IMPLEMENT_DEVICE(TRIVIAL_RANDOM_DEVICE)
};
}

#undef TRIVIAL_RANDOM_DEVICE