mep/interpreter.h

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#if !defined(VITA_MEP_INTERPRETER_H)
#define      VITA_MEP_INTERPRETER_H
 
#include "kernel/core_interpreter.h"
#include "kernel/gp/function.h"
#include "kernel/gp/gene.h"
#include "kernel/vitafwd.h"
#include "utility/matrix.h"
 
namespace vita
{
template<>
class interpreter<i_mep> : public core_interpreter
{
public:
  explicit interpreter(const i_mep *);
 
  [[nodiscard]] index_t fetch_index(unsigned) const;
 
  [[nodiscard]] const i_mep &program() const { return *prg_; }
 
  [[nodiscard]] terminal_param_t fetch_param() const final;
  [[nodiscard]] value_t fetch_arg(unsigned) final;
  value_t fetch_opaque_arg(unsigned) final;
 
private:
  // *** Private support methods ***
  value_t run_locus(const locus &);
  [[nodiscard]] double penalty_locus(const locus &);
 
  // Nonvirtual interface.
  value_t run_nvi() override;
  [[nodiscard]] double penalty_nvi() override;
  [[nodiscard]] bool is_valid_nvi() const override;
 
  // *** Private data members ***
  const i_mep *prg_;
 
  struct elem_ {bool valid; value_t value;};
  mutable matrix<elem_> cache_;
 
  // Instruction pointer.
  locus ip_;
};
 
}  // namespace vita
 
#endif  // include guard