45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
// sm_traits.hpp
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// Copyright (c) 2005-2012 Ben Hanson (http://www.benhanson.net/)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef LEXERTL_SM_TRAITS_H
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#define LEXERTL_SM_TRAITS_H
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namespace lexertl
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{
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template<typename ch_type, typename sm_type, bool comp, bool look,
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bool dfa_nfa>
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struct basic_sm_traits
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{
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enum {char_24_bit = sizeof(ch_type) > 2, compressed = comp, lookup = look,
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is_dfa = dfa_nfa};
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typedef ch_type input_char_type;
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typedef ch_type char_type;
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typedef sm_type id_type;
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static id_type npos ()
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{
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return static_cast<id_type>(~0);
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}
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};
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template<typename ch_type, typename sm_type, bool look, bool dfa_nfa>
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struct basic_sm_traits<ch_type, sm_type, true, look, dfa_nfa>
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{
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enum {char_24_bit = sizeof(ch_type) > 2, compressed = true, lookup = look,
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is_dfa = dfa_nfa};
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typedef ch_type input_char_type;
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typedef unsigned char char_type;
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typedef sm_type id_type;
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static id_type npos ()
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{
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return static_cast<id_type>(~0);
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}
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};
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}
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#endif
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