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1 | // char_state_machine.hpp |
2 | // Copyright (c) 2007-2009 Ben Hanson (http://www.benhanson.net/) | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
5 | // file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | #ifndef BOOST_LEXER_CHAR_STATE_MACHINE_HPP | |
7 | #define BOOST_LEXER_CHAR_STATE_MACHINE_HPP | |
8 | ||
9 | #include "../consts.hpp" | |
10 | #include <map> | |
11 | #include "../size_t.hpp" | |
12 | #include "../string_token.hpp" | |
13 | #include <vector> | |
14 | ||
15 | namespace boost | |
16 | { | |
17 | namespace lexer | |
18 | { | |
19 | namespace detail | |
20 | { | |
21 | template<typename CharT> | |
22 | struct basic_char_state_machine | |
23 | { | |
24 | struct state | |
25 | { | |
26 | typedef basic_string_token<CharT> string_token; | |
27 | typedef std::map<std::size_t, string_token> size_t_string_token_map; | |
28 | typedef std::pair<std::size_t, string_token> size_t_string_token_pair; | |
29 | ||
30 | bool _end_state; | |
31 | std::size_t _id; | |
32 | std::size_t _unique_id; | |
33 | std::size_t _state; | |
34 | std::size_t _bol_index; | |
35 | std::size_t _eol_index; | |
36 | size_t_string_token_map _transitions; | |
37 | ||
38 | state () : | |
39 | _end_state (false), | |
40 | _id (0), | |
41 | _unique_id (npos), | |
42 | _state (0), | |
43 | _bol_index (npos), | |
44 | _eol_index (npos) | |
45 | { | |
46 | } | |
47 | }; | |
48 | ||
49 | typedef std::vector<state> state_vector; | |
50 | typedef std::vector<state_vector> state_vector_vector; | |
51 | ||
52 | state_vector_vector _sm_vector; | |
53 | ||
54 | bool empty () const | |
55 | { | |
56 | return _sm_vector.empty (); | |
57 | } | |
58 | ||
59 | void clear () | |
60 | { | |
61 | _sm_vector.clear (); | |
62 | } | |
63 | ||
64 | void swap (basic_char_state_machine &csm_) | |
65 | { | |
66 | _sm_vector.swap (csm_._sm_vector); | |
67 | } | |
68 | }; | |
69 | ||
70 | typedef basic_char_state_machine<char> char_state_machine; | |
71 | typedef basic_char_state_machine<wchar_t> wchar_state_machine; | |
72 | ||
73 | } | |
74 | } | |
75 | } | |
76 | ||
77 | #endif |