validation_strategy.h

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#include "kernel/evaluation_context.h"
 
#include <concepts>
#include <memory>
 
#if !defined(ULTRA_VALIDATION_STRATEGY_H)
#define      ULTRA_VALIDATION_STRATEGY_H
 
namespace ultra
{

class validation_strategy
{
public:
  virtual ~validation_strategy() = default;

  [[nodiscard]] virtual evaluation_context training_setup(unsigned /*run*/) = 0;

  [[nodiscard]] virtual evaluation_context shake(unsigned /*generation*/) = 0;

  virtual bool validation_setup(unsigned /*run*/) = 0;
 
  [[nodiscard]] virtual std::unique_ptr<validation_strategy> clone() const = 0;
};

class as_is_validation final : public validation_strategy
{
public:
  [[nodiscard]] evaluation_context training_setup(unsigned) noexcept override
  { return evaluation_context::unchanged; }
  [[nodiscard]] evaluation_context shake(unsigned) noexcept override
  { return evaluation_context::unchanged; }
  [[nodiscard]] bool validation_setup(unsigned) noexcept override
  { return false; }
 
  [[nodiscard]] std::unique_ptr<validation_strategy> clone() const override
  {
    return std::make_unique<as_is_validation>(*this);
  }
};
 
template<class V> concept ValidationStrategy =
  std::derived_from<V, validation_strategy>;
 
}  // namespace ultra
 
#endif  // include guard