ls-standard-library/include/ls_std/boxing/Boolean.hpp

/*
 * Author:          Patrick-Christopher Mattulat
 * Company:         Lynar Studios
 * E-Mail:          webmaster@lynarstudios.com
 * Created:         2020-08-09
 * Changed:         2022-05-21
 *
 * */

#ifndef LS_STD_BOOLEAN_HPP
#define LS_STD_BOOLEAN_HPP

#include <memory>
#include <sstream>
#include <ls_std/core/Class.hpp>
#include <ls_std/core/interface/IBoxing.hpp>

namespace ls
{
  namespace std
  {
    namespace boxing
    {
      class Boolean : public ls::std::core::Class, public ls::std::core::interface_type::IBoxing
      {
        public:

          explicit Boolean(bool _value);
          Boolean();
          ~Boolean() override = default;

          // conversion operator

          operator bool() const;

          // assignment operators

          ls::std::boxing::Boolean &operator=(int _value);
          ls::std::boxing::Boolean &operator=(bool _value);

          // stream operators

          friend ::std::ostream &operator<<(::std::ostream &_outputStream, const ls::std::boxing::Boolean &_boolean)
          {
            _outputStream << _boolean._toString();
            return _outputStream;
          }

          // logical operators

          friend bool operator!(const ls::std::boxing::Boolean &_boolean)
          {
            return !_boolean.value;
          }

          bool operator&&(const ls::std::boxing::Boolean &_boolean) const;
          bool operator&&(bool _value) const;
          bool operator&&(int _value) const;
          bool operator||(const ls::std::boxing::Boolean &_boolean) const;
          bool operator||(bool _value) const;
          bool operator||(int _value) const;
          // INFO: operator ^ can not be taken for XOR, since it's not possible to implement it respecting commutative law

          // implementation

          void parse(::std::string _parseText) override;
          ::std::string toString() override;

          // additional functionality

          bool getValue() const;
          static bool XOR(const ls::std::boxing::Boolean &_leftExpression, const ls::std::boxing::Boolean &_rightExpression);
          static bool XOR(const ls::std::boxing::Boolean &_leftExpression, bool _rightExpression);
          static bool XOR(bool _leftExpression, const ls::std::boxing::Boolean &_rightExpression);
          static bool XOR(bool _leftExpression, bool _rightExpression);

        private:

          bool value{};

          const ::std::string FALSE_STRING = "false";
          const ::std::string TRUE_STRING = "true";

          ::std::string _toString() const;
      };
    }
  }
}

#endif