// sm_traits.hpp
// Copyright (c) 2005-2020 Ben Hanson (http://www.benhanson.net/)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef LEXERTL_SM_TRAITS_HPP
#define LEXERTL_SM_TRAITS_HPP

namespace lexertl
{
    template<typename ch_type, typename sm_type, bool comp, bool look,
        bool dfa_nfa>
        struct basic_sm_traits
    {
        enum
        {
            char_24_bit = sizeof(ch_type) > 2, compressed = comp, lookup = look,
            is_dfa = dfa_nfa
        };
        using input_char_type = ch_type;
        using char_type = ch_type;
        using id_type = sm_type;

        static id_type npos()
        {
            return static_cast<id_type>(~0);
        }
    };

    template<typename ch_type, typename sm_type, bool look, bool dfa_nfa>
    struct basic_sm_traits<ch_type, sm_type, true, look, dfa_nfa>
    {
        enum
        {
            char_24_bit = sizeof(ch_type) > 2, compressed = true, lookup = look,
            is_dfa = dfa_nfa
        };
        using input_char_type = ch_type;
        using char_type = unsigned char;
        using id_type = sm_type;

        static id_type npos()
        {
            return static_cast<id_type>(~0);
        }
    };
}

#endif
