1 // Boost.Range library
2 //
3 //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
4 //  distribution is subject to the Boost Software License, Version
5 //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 //  http://www.boost.org/LICENSE_1_0.txt)
7 //
8 // For more information, see http://www.boost.org/libs/range/
9 //
10 
11 #ifndef BOOST_RANGE_MUTABLE_ITERATOR_HPP
12 #define BOOST_RANGE_MUTABLE_ITERATOR_HPP
13 
14 #if defined(_MSC_VER)
15 # pragma once
16 #endif
17 
18 #include <boost/range/config.hpp>
19 
20 #include <boost/range/range_fwd.hpp>
21 #include <boost/range/detail/extract_optional_type.hpp>
22 #include <boost/type_traits/remove_reference.hpp>
23 #include <boost/iterator/iterator_traits.hpp>
24 #include <cstddef>
25 #include <utility>
26 
27 namespace boost
28 {
29 
30     //////////////////////////////////////////////////////////////////////////
31     // default
32     //////////////////////////////////////////////////////////////////////////
33 
34     namespace range_detail
35     {
36 
37 BOOST_RANGE_EXTRACT_OPTIONAL_TYPE( iterator )
38 
39 template< typename C >
40 struct range_mutable_iterator
41         : range_detail::extract_iterator<
42             BOOST_DEDUCED_TYPENAME remove_reference<C>::type>
43 {};
44 
45 //////////////////////////////////////////////////////////////////////////
46 // pair
47 //////////////////////////////////////////////////////////////////////////
48 
49 template< typename Iterator >
50 struct range_mutable_iterator< std::pair<Iterator,Iterator> >
51 {
52     typedef Iterator type;
53 };
54 
55 //////////////////////////////////////////////////////////////////////////
56 // array
57 //////////////////////////////////////////////////////////////////////////
58 
59 template< typename T, std::size_t sz >
60 struct range_mutable_iterator< T[sz] >
61 {
62     typedef T* type;
63 };
64 
65     } // namespace range_detail
66 
67 template<typename C, typename Enabler=void>
68 struct range_mutable_iterator
69         : range_detail::range_mutable_iterator<
70             BOOST_DEDUCED_TYPENAME remove_reference<C>::type
71         >
72 {
73 };
74 
75 } // namespace boost
76 
77 #include <boost/range/detail/msvc_has_iterator_workaround.hpp>
78 
79 #endif
80