Class ParseState

unittests/catch.hpp:5822–5836

    };

    class ParseState {
    public:

        ParseState( ParseResultType type, TokenStream const &remainingTokens )
        : m_type(type),
          m_remainingTokens( remainingTokens )
        {}

        auto type() const -> ParseResultType { return m_type; }
        auto remainingTokens() const -> TokenStream { return m_remainingTokens; }

    private:
        ParseResultType m_type;
        TokenStream m_remainingTokens;
    };

    using Result = BasicResult<void>;
    using ParserResult = BasicResult<ParseResultType>;