symbol.hpp

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#ifndef SYMBOL_HPP
#define SYMBOL_HPP
 
#include <iostream>
#include <ostream>
 
constexpr char kBlank = ' ';
 
class Symbol
{
  public:
    Symbol() noexcept : char_(kBlank) {}
 
    explicit Symbol(char symbol) noexcept : char_(symbol) {}
 
    [[nodiscard]] char get_char() const noexcept { return this->char_; }
 
    [[nodiscard]] auto operator<=>(const Symbol &other) const noexcept = default;
 
    Symbol &operator=(const Symbol &other) noexcept = default;
 
    void print(std::ostream &os = std::cout) const noexcept { os << this->char_; }
 
    friend std::ostream &operator<<(std::ostream &os, const Symbol &symbol) noexcept;
 
  private:
    char char_; 
};
 
inline std::ostream &operator<<(std::ostream &os, const Symbol &symbol) noexcept
{
    symbol.print(os);
    return os;
}
 
#endif // SYMBOL_HPP