#ifndef SYMBOL_HPP_
#define SYMBOL_HPP_

#include "const_string.hpp"

class symbol
{
public:
    static constexpr std::size_t invalid_index = std::size_t( 0 ) - 1 ;
    constexpr symbol( std::size_t symbol_end )
        : m_end( symbol_end )
    {
    }
    constexpr bool valid()
    {
        return m_end != invalid_index;
    }
    constexpr std::size_t end()
    {
        return m_end;
    }
private:
    const std::size_t m_end;
};

#endif