]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // Copyright (c) 2001, Daniel C. Nuffer |
2 | // Copyright (c) 2001-2011 Hartmut Kaiser | |
3 | // http://spirit.sourceforge.net/ | |
4 | // | |
5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ||
8 | #if !defined(BOOST_SPIRIT_ITERATOR_LOOK_AHEAD_MAR_16_2007_1253PM) | |
9 | #define BOOST_SPIRIT_ITERATOR_LOOK_AHEAD_MAR_16_2007_1253PM | |
10 | ||
11 | #include <boost/spirit/home/support/iterators/detail/first_owner_policy.hpp> | |
12 | #include <boost/spirit/home/support/iterators/detail/no_check_policy.hpp> | |
13 | #include <boost/spirit/home/support/iterators/detail/input_iterator_policy.hpp> | |
14 | #include <boost/spirit/home/support/iterators/detail/fixed_size_queue_policy.hpp> | |
15 | #include <boost/spirit/home/support/iterators/detail/combine_policies.hpp> | |
16 | #include <boost/spirit/home/support/iterators/multi_pass.hpp> | |
17 | ||
18 | namespace boost { namespace spirit | |
19 | { | |
20 | /////////////////////////////////////////////////////////////////////////// | |
21 | // this could be a template typedef, since such a thing doesn't | |
22 | // exist in C++, we'll use inheritance to accomplish the same thing. | |
23 | /////////////////////////////////////////////////////////////////////////// | |
24 | template <typename T, std::size_t N> | |
25 | class look_ahead : | |
26 | public multi_pass<T | |
27 | , iterator_policies::default_policy< | |
28 | iterator_policies::first_owner | |
29 | , iterator_policies::no_check | |
30 | , iterator_policies::input_iterator | |
31 | , iterator_policies::fixed_size_queue<N> > | |
32 | > | |
33 | { | |
34 | private: | |
35 | typedef multi_pass<T | |
36 | , iterator_policies::default_policy< | |
37 | iterator_policies::first_owner | |
38 | , iterator_policies::no_check | |
39 | , iterator_policies::input_iterator | |
40 | , iterator_policies::fixed_size_queue<N> > | |
41 | > base_type; | |
42 | ||
43 | public: | |
44 | look_ahead() | |
45 | : base_type() {} | |
46 | ||
47 | explicit look_ahead(T x) | |
48 | : base_type(x) {} | |
49 | ||
50 | look_ahead(look_ahead const& x) | |
51 | : base_type(x) {} | |
52 | ||
53 | #if BOOST_WORKAROUND(__GLIBCPP__, == 20020514) | |
54 | look_ahead(int) // workaround for a bug in the library | |
55 | : base_type() {} // shipped with gcc 3.1 | |
56 | #endif // BOOST_WORKAROUND(__GLIBCPP__, == 20020514) | |
57 | ||
58 | look_ahead operator= (base_type const& rhs) | |
59 | { | |
60 | this->base_type::operator=(rhs); | |
61 | return *this; | |
62 | } | |
63 | ||
64 | // default generated operators destructor and assignment operator are ok. | |
65 | }; | |
66 | ||
67 | }} | |
68 | ||
69 | #endif |