interpreter.h

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#if !defined(ULTRA_INTERPRETER_H)
#define      ULTRA_INTERPRETER_H
 
#include "kernel/gp/individual.h"
 
namespace ultra
{
class interpreter : public function::params
{
public:
  explicit interpreter(const gp::individual &);
  virtual ~interpreter() = default;
 
  value_t run(const locus &);
  value_t run();
 
  [[nodiscard]] value_t fetch_arg(std::size_t) const final;
  [[nodiscard]] value_t fetch_opaque_arg(std::size_t) const final;
 
  void rebind(const gp::individual &) noexcept;
 
  [[nodiscard]] bool is_valid() const;
 
  [[nodiscard]] const gp::individual &program() const noexcept;
 
private:
  [[nodiscard]] const gene &current_gene() const noexcept;
 
  const gp::individual *prg_;
 
  struct elem_ { value_t value; std::uint8_t stamp {0}; };
  mutable matrix<elem_> cache_;
 
  mutable locus ip_ {};  // instruction pointer
  std::uint8_t stamp_ {0};
};
 
extern value_t run(const gp::individual &);
 
}  // namespace ultra
 
#endif  // include guard