parser_names.ipp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

    {
        return std::string("epsilon");
    }

    inline std::string
    parser_name(anychar_parser const&)
    {
        return std::string("anychar");
    }

    inline std::string
    parser_name(alnum_parser const&)
    {
        return std::string("alnum");
    }

    inline std::string
    parser_name(alpha_parser const&)
    {
        return std::string("alpha");
    }

    inline std::string
    parser_name(cntrl_parser const&)
    {
        return std::string("cntrl");
    }

    inline std::string
    parser_name(digit_parser const&)
    {
        return std::string("digit");
    }

    inline std::string
    parser_name(graph_parser const&)
    {
        return std::string("graph");
    }

    inline std::string
    parser_name(lower_parser const&)
    {
        return std::string("lower");
    }

    inline std::string
    parser_name(print_parser const&)
    {
        return std::string("print");
    }

    inline std::string
    parser_name(punct_parser const&)
    {
        return std::string("punct");
    }

    inline std::string
    parser_name(blank_parser const&)
    {
        return std::string("blank");
    }

    inline std::string
    parser_name(space_parser const&)
    {
        return std::string("space");
    }

    inline std::string
    parser_name(upper_parser const&)
    {
        return std::string("upper");
    }

    inline std::string
    parser_name(xdigit_parser const&)
    {
        return std::string("xdigit");
    }

    inline std::string
    parser_name(eol_parser const&)
    {
        return std::string("eol");
    }

    inline std::string
    parser_name(end_parser const&)
    {
        return std::string("end");
    }

///////////////////////////////////////////////////////////////////////////////
//  from rule.hpp
    namespace impl {
        struct node_registry
        {
            typedef std::pair<std::string, bool> rule_info;
            typedef std::map<void const *, rule_info> rule_infos;

            std::string find_node(void const *r)
            {
                rule_infos::const_iterator cit = infos.find(r);
                if (cit != infos.end())
                    return (*cit).second.first;
                return std::string("<unknown>");
            }

            bool trace_node(void const *r)
            {
                rule_infos::const_iterator cit = infos.find(r);
                if (cit != infos.end())
                    return (*cit).second.second;
                return BOOST_SPIRIT_DEBUG_TRACENODE;
            }

            bool register_node(void const *r, char const *name_to_register,
                bool trace_node)
            {
                if (infos.find(r) != infos.end())
                    return false;

                return infos.insert(rule_infos::value_type(r,
                    rule_info(std::string(name_to_register), trace_node))
                ).second;
            }

            bool unregister_node(void const *r)
            {
                if (infos.find(r) == infos.end())
                    return false;
                return (1 == infos.erase(r));
            }

        private:
            rule_infos infos;
        };

        inline node_registry &
        get_node_registry()
        {
            static node_registry node_infos;
            return node_infos;
        }
    }   // namespace impl

    template<
        typename DerivedT, typename EmbedT, 
        typename T0, typename T1, typename T2
    >
    inline std::string
    parser_name(impl::rule_base<DerivedT, EmbedT, T0, T1, T2> const& p)
    {
        return std::string("rule_base")
            + std::string("(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

    template<typename T0, typename T1, typename T2>
    inline std::string
    parser_name(rule<T0, T1, T2> const& p)
    {
        return std::string("rule")
            + std::string("(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

///////////////////////////////////////////////////////////////////////////////
//  from subrule.hpp
    template <typename FirstT, typename RestT>
    inline std::string
    parser_name(subrule_list<FirstT, RestT> const &p)
    {
        return std::string("subrule_list")
            + std::string("(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

    template <int ID, typename DefT, typename ContextT>
    inline std::string
    parser_name(subrule_parser<ID, DefT, ContextT> const &p)
    {
        return std::string("subrule_parser")
            + std::string("(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

    template <int ID, typename ContextT>
    inline std::string
    parser_name(subrule<ID, ContextT> const &p)
    {
        BOOST_SPIRIT_SSTREAM stream;
        stream << ID;
        return std::string("subrule<")
            + BOOST_SPIRIT_GETSTRING(stream)
            + std::string(">(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

///////////////////////////////////////////////////////////////////////////////
//  from grammar.hpp
    template <typename DerivedT, typename ContextT>
    inline std::string
    parser_name(grammar<DerivedT, ContextT> const& p)
    {
        return std::string("grammar")
            + std::string("(")
            + impl::get_node_registry().find_node(&p)
            + std::string(")");
    }

///////////////////////////////////////////////////////////////////////////////
//  decide, if a node is to be traced or not
    template<
        typename DerivedT, typename EmbedT, 
        typename T0, typename T1, typename T2
    >
    inline bool
    trace_parser(impl::rule_base<DerivedT, EmbedT, T0, T1, T2> 
        const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

    template<typename T0, typename T1, typename T2>
    inline bool
    trace_parser(rule<T0, T1, T2> const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

    template <typename DerivedT, typename ContextT>
    inline bool
    trace_parser(grammar<DerivedT, ContextT> const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

    template <typename DerivedT, int N, typename ContextT>
    inline bool
    trace_parser(impl::entry_grammar<DerivedT, N, ContextT> const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

    template <int ID, typename ContextT>
    bool
    trace_parser(subrule<ID, ContextT> const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

    template <typename ParserT, typename ActorTupleT>
    bool
    trace_parser(init_closure_parser<ParserT, ActorTupleT> const& p)
    {
        return impl::get_node_registry().trace_node(&p);
    }

///////////////////////////////////////////////////////////////////////////////
}} // namespace boost::spirit

#undef BOOST_SPIRIT_SSTREAM
#undef BOOST_SPIRIT_GETSTRING

#endif // defined(BOOST_SPIRIT_DEBUG)

#endif // !defined(BOOST_SPIRIT_PARSER_NAMES_IPP)