variant.h

#ifndef VARIANT_H
#define VARIANT_H

#include <string>

class Variant
{
public:
    enum class Type {Nothing, Int, String};
public:
    Variant(Type type = Type::Nothing);
    Variant(Type type, const std::string& value);
    Variant(const std::string& value);

    static Variant fromInt(int value);

    Variant operator+ (const Variant& x) const;
    Variant operator- (const Variant& x) const;
    Variant operator* (const Variant& x) const;
    Variant operator/ (const Variant& x) const;

    std::string toString() const;

private:
    Type type;
    int ivalue;
    std::string svalue;
};

#endif // VARIANT_H