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1 | /*============================================================================= | |
2 | Copyright (c) 2007 Tobias Schwinger | |
3 | Copyright (c) 2001-2011 Hartmut Kaiser | |
4 | http://spirit.sourceforge.net/ | |
5 | ||
6 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
7 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
8 | =============================================================================*/ | |
9 | #if !defined(BOOST_SPIRIT_ITERATOR_MULTI_PASS_FWD_APR_18_2008_1102AM) | |
10 | #define BOOST_SPIRIT_ITERATOR_MULTI_PASS_FWD_APR_18_2008_1102AM | |
11 | ||
12 | #include <cstddef> | |
13 | #include <boost/spirit/home/support/multi_pass_wrapper.hpp> | |
14 | #include <boost/swap.hpp> | |
15 | ||
16 | namespace boost { namespace spirit { | |
17 | ||
18 | namespace iterator_policies | |
19 | { | |
20 | // input policies | |
21 | struct input_iterator; | |
22 | struct buffering_input_iterator; | |
23 | struct istream; | |
24 | struct lex_input; | |
25 | struct functor_input; | |
26 | struct split_functor_input; | |
27 | ||
28 | // ownership policies | |
29 | struct ref_counted; | |
30 | struct first_owner; | |
31 | ||
32 | // checking policies | |
33 | class illegal_backtracking; | |
34 | struct buf_id_check; | |
35 | struct no_check; | |
36 | ||
37 | // storage policies | |
38 | struct split_std_deque; | |
39 | template<std::size_t N> struct fixed_size_queue; | |
40 | ||
41 | // policy combiner | |
42 | #if defined(BOOST_SPIRIT_DEBUG) | |
43 | template<typename Ownership = ref_counted | |
44 | , typename Checking = buf_id_check | |
45 | , typename Input = buffering_input_iterator | |
46 | , typename Storage = split_std_deque> | |
47 | struct default_policy; | |
48 | #else | |
49 | template<typename Ownership = ref_counted | |
50 | , typename Checking = no_check | |
51 | , typename Input = buffering_input_iterator | |
52 | , typename Storage = split_std_deque> | |
53 | struct default_policy; | |
54 | #endif | |
55 | } | |
56 | ||
57 | template <typename T | |
58 | , typename Policies = iterator_policies::default_policy<> > | |
59 | class multi_pass; | |
60 | ||
61 | template <typename T, typename Policies> | |
62 | void swap(multi_pass<T, Policies> &x, multi_pass<T, Policies> &y); | |
63 | ||
64 | }} // namespace boost::spirit | |
65 | ||
66 | namespace boost { namespace spirit { namespace traits | |
67 | { | |
68 | // declare special functions allowing to integrate any multi_pass iterator | |
69 | // with expectation points | |
70 | ||
71 | // multi_pass iterators require special handling (for the non-specialized | |
72 | // versions of these functions see support/multi_pass_wrapper.hpp) | |
73 | template <typename T, typename Policies> | |
74 | void clear_queue(multi_pass<T, Policies>& | |
75 | , BOOST_SCOPED_ENUM(clear_mode) mode = clear_mode::clear_if_enabled); | |
76 | ||
77 | template <typename T, typename Policies> | |
78 | void inhibit_clear_queue(multi_pass<T, Policies>&, bool); | |
79 | ||
80 | template <typename T, typename Policies> | |
81 | bool inhibit_clear_queue(multi_pass<T, Policies>&); | |
82 | ||
83 | // Helper template to recognize a multi_pass iterator. This specialization | |
84 | // will be instantiated for any multi_pass iterator. | |
85 | template <typename T, typename Policies> | |
86 | struct is_multi_pass<multi_pass<T, Policies> > : mpl::true_ {}; | |
87 | ||
88 | }}} | |
89 | ||
90 | #endif | |
91 |