function.h

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#if !defined(VITA_FUNCTION_H)
#define      VITA_FUNCTION_H
 
#include <string>
 
#include "kernel/gp/symbol.h"
 
namespace vita
{
class function : public symbol
{
public:
  function(const std::string &, category_t, cvect);
  function(const std::string &, std::size_t);
 
  [[nodiscard]] category_t arg_category(std::size_t) const;
 
  [[nodiscard]] virtual bool associative() const;
 
  [[nodiscard]] virtual std::string display(format = c_format) const;
 
  [[nodiscard]] unsigned arity() const final;
 
  [[nodiscard]] bool is_valid() const override;
 
  [[nodiscard]] static const function *cast(const symbol *);
 
private:
  cvect argt_;
};
 
inline unsigned function::arity() const
{
  Expects(argt_.size());
  return static_cast<unsigned>(argt_.size());
}
 
inline bool function::associative() const
{
  return false;
}
 
inline category_t function::arg_category(std::size_t i) const
{
  Expects(i < arity());
  return argt_[i];
}
 
inline const function *function::cast(const symbol *s)
{
  Expects(s->arity());
  return static_cast<const function *>(s);
}
 
}  // namespace vita
 
#endif  // include guard