Function.h

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/*
 * This file is part of KnowRob, please consult
 * https://github.com/knowrob/knowrob for license details.
 */
 
#ifndef KNOWROB_FUNCTION_H
#define KNOWROB_FUNCTION_H
 
#include "vector"
#include "Term.h"
#include "Atom.h"
 
namespace knowrob {
    class Function : public Term {
    public:
        Function(AtomPtr functor, const std::vector<TermPtr> &arguments);
 
        Function(std::string_view functor, const std::vector<TermPtr> &arguments);
 
        bool isSameFunction(const Function &other) const;
 
        auto &functor() const { return functor_; }
 
        auto &arguments() const { return arguments_; }
 
        auto arity() const { return arguments_.size(); }
 
        size_t hashOfFunction() const;
 
        // Override Term
        const std::set<std::string_view> &variables() const override { return variables_; }
 
        // Override Printable
        void write(std::ostream &os) const override;
 
    protected:
        const std::shared_ptr<Atom> functor_;
        const std::vector<TermPtr> arguments_;
        const std::set<std::string_view> variables_;
 
        std::set<std::string_view> getVariables1() const;
    };
 
    using FunctionPtr = std::shared_ptr<Function>;
 
} // knowrob
 
#endif //KNOWROB_FUNCTION_H