1 // Debugging support implementation -*- C++ -*-
3 // Copyright (C) 2015 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 /** @file debug/stl_iterator.h
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_STL_ITERATOR_H
30 #define _GLIBCXX_DEBUG_STL_ITERATOR_H 1
32 #include <debug/helper_functions.h>
36 // Help Debug mode to see through reverse_iterator.
37 template<typename _Iterator
>
39 __valid_range(const std::reverse_iterator
<_Iterator
>& __first
,
40 const std::reverse_iterator
<_Iterator
>& __last
,
41 typename _Distance_traits
<_Iterator
>::__type
& __dist
)
42 { return __valid_range(__last
.base(), __first
.base(), __dist
); }
44 template<typename _Iterator
>
45 inline typename _Distance_traits
<_Iterator
>::__type
46 __get_distance(const std::reverse_iterator
<_Iterator
>& __first
,
47 const std::reverse_iterator
<_Iterator
>& __last
)
48 { return __get_distance(__last
.base(), __first
.base()); }
50 #if __cplusplus < 201103L
51 template<typename _Iterator
>
52 struct __is_safe_random_iterator
<std::reverse_iterator
<_Iterator
> >
53 : __is_safe_random_iterator
<_Iterator
>
56 template<typename _Iterator
>
57 struct _Unsafe_type
<std::reverse_iterator
<_Iterator
> >
59 typedef typename _Unsafe_type
<_Iterator
>::_Type _UnsafeType
;
60 typedef std::reverse_iterator
<_UnsafeType
> _Type
;
63 template<typename _Iterator
>
64 inline std::reverse_iterator
<typename _Unsafe_type
<_Iterator
>::_Type
>
65 __unsafe(const std::reverse_iterator
<_Iterator
>& __it
)
67 typedef typename _Unsafe_type
<_Iterator
>::_Type _UnsafeType
;
68 return std::reverse_iterator
<_UnsafeType
>(__unsafe(__it
.base()));
71 template<typename _Iterator
>
73 __base(const std::reverse_iterator
<_Iterator
>& __it
)
74 -> decltype(std::__make_reverse_iterator(__base(__it
.base())))
75 { return std::__make_reverse_iterator(__base(__it
.base())); }
77 template<typename _Iterator
>
79 __unsafe(const std::reverse_iterator
<_Iterator
>& __it
)
80 -> decltype(std::__make_reverse_iterator(__unsafe(__it
.base())))
81 { return std::__make_reverse_iterator(__unsafe(__it
.base())); }
84 #if __cplusplus >= 201103L
85 // Help Debug mode to see through move_iterator.
86 template<typename _Iterator
>
88 __valid_range(const std::move_iterator
<_Iterator
>& __first
,
89 const std::move_iterator
<_Iterator
>& __last
,
90 typename _Distance_traits
<_Iterator
>::__type
& __dist
)
91 { return __valid_range(__first
.base(), __last
.base(), __dist
); }
93 template<typename _Iterator
>
94 inline typename _Distance_traits
<_Iterator
>::__type
95 __get_distance(const std::move_iterator
<_Iterator
>& __first
,
96 const std::move_iterator
<_Iterator
>& __last
)
97 { return __get_distance(__first
.base(), __last
.base()); }
99 template<typename _Iterator
>
101 __unsafe(const std::move_iterator
<_Iterator
>& __it
)
102 -> decltype(std::make_move_iterator(__unsafe(__it
.base())))
103 { return std::make_move_iterator(__unsafe(__it
.base())); }
105 template<typename _Iterator
>
107 __base(const std::move_iterator
<_Iterator
>& __it
)
108 -> decltype(std::make_move_iterator(__base(__it
.base())))
109 { return std::make_move_iterator(__base(__it
.base())); }