1 // internals.hpp
2 // Copyright (c) 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_INTERNALS_HPP
7 #define BOOST_LEXER_INTERNALS_HPP
8 
9 #include "containers/ptr_vector.hpp"
10 
11 namespace boost
12 {
13 namespace lexer
14 {
15 namespace detail
16 {
17 struct internals
18 {
19     typedef std::vector<std::size_t> size_t_vector;
20     typedef ptr_vector<size_t_vector> size_t_vector_vector;
21 
22     size_t_vector_vector _lookup;
23     size_t_vector _dfa_alphabet;
24     size_t_vector_vector _dfa;
25     bool _seen_BOL_assertion;
26     bool _seen_EOL_assertion;
27 
internalsboost::lexer::detail::internals28     internals () :
29         _seen_BOL_assertion (false),
30         _seen_EOL_assertion (false)
31     {
32     }
33 
clearboost::lexer::detail::internals34     void clear ()
35     {
36         _lookup.clear ();
37         _dfa_alphabet.clear ();
38         _dfa.clear ();
39         _seen_BOL_assertion = false;
40         _seen_EOL_assertion = false;
41     }
42 
swapboost::lexer::detail::internals43     void swap (internals &internals_)
44     {
45         _lookup->swap (*internals_._lookup);
46         _dfa_alphabet.swap (internals_._dfa_alphabet);
47         _dfa->swap (*internals_._dfa);
48         std::swap (_seen_BOL_assertion, internals_._seen_BOL_assertion);
49         std::swap (_seen_EOL_assertion, internals_._seen_EOL_assertion);
50     }
51 
52 private:
53     internals (const internals &); // No copy construction.
54     internals &operator = (const internals &); // No assignment.
55 };
56 }
57 }
58 }
59 
60 #endif
61