| 5134 |
serge |
1 |
// TR1 utility -*- C++ -*- |
|
|
2 |
|
|
|
3 |
// Copyright (C) 2004-2013 Free Software Foundation, Inc. |
|
|
4 |
// |
|
|
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) |
|
|
9 |
// any later version. |
|
|
10 |
|
|
|
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. |
|
|
15 |
|
|
|
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. |
|
|
19 |
|
|
|
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 |
// . |
|
|
24 |
|
|
|
25 |
/** @file tr1/utility |
|
|
26 |
* This is a TR1 C++ Library header. |
|
|
27 |
*/ |
|
|
28 |
|
|
|
29 |
#ifndef _GLIBCXX_TR1_UTILITY |
|
|
30 |
#define _GLIBCXX_TR1_UTILITY 1 |
|
|
31 |
|
|
|
32 |
#pragma GCC system_header |
|
|
33 |
|
|
|
34 |
#include |
|
|
35 |
#include |
|
|
36 |
#include |
|
|
37 |
|
|
|
38 |
namespace std _GLIBCXX_VISIBILITY(default) |
|
|
39 |
{ |
|
|
40 |
namespace tr1 |
|
|
41 |
{ |
|
|
42 |
_GLIBCXX_BEGIN_NAMESPACE_VERSION |
|
|
43 |
|
|
|
44 |
template |
|
|
45 |
class tuple_size; |
|
|
46 |
|
|
|
47 |
template |
|
|
48 |
class tuple_element; |
|
|
49 |
|
|
|
50 |
// Various functions which give std::pair a tuple-like interface. |
|
|
51 |
template |
|
|
52 |
struct tuple_size > |
|
|
53 |
{ static const int value = 2; }; |
|
|
54 |
|
|
|
55 |
template |
|
|
56 |
const int |
|
|
57 |
tuple_size >::value; |
|
|
58 |
|
|
|
59 |
template |
|
|
60 |
struct tuple_element<0, std::pair<_Tp1, _Tp2> > |
|
|
61 |
{ typedef _Tp1 type; }; |
|
|
62 |
|
|
|
63 |
template |
|
|
64 |
struct tuple_element<1, std::pair<_Tp1, _Tp2> > |
|
|
65 |
{ typedef _Tp2 type; }; |
|
|
66 |
|
|
|
67 |
template |
|
|
68 |
struct __pair_get; |
|
|
69 |
|
|
|
70 |
template<> |
|
|
71 |
struct __pair_get<0> |
|
|
72 |
{ |
|
|
73 |
template |
|
|
74 |
static _Tp1& __get(std::pair<_Tp1, _Tp2>& __pair) |
|
|
75 |
{ return __pair.first; } |
|
|
76 |
|
|
|
77 |
template |
|
|
78 |
static const _Tp1& __const_get(const std::pair<_Tp1, _Tp2>& __pair) |
|
|
79 |
{ return __pair.first; } |
|
|
80 |
}; |
|
|
81 |
|
|
|
82 |
template<> |
|
|
83 |
struct __pair_get<1> |
|
|
84 |
{ |
|
|
85 |
template |
|
|
86 |
static _Tp2& __get(std::pair<_Tp1, _Tp2>& __pair) |
|
|
87 |
{ return __pair.second; } |
|
|
88 |
|
|
|
89 |
template |
|
|
90 |
static const _Tp2& __const_get(const std::pair<_Tp1, _Tp2>& __pair) |
|
|
91 |
{ return __pair.second; } |
|
|
92 |
}; |
|
|
93 |
|
|
|
94 |
template |
|
|
95 |
inline typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& |
|
|
96 |
get(std::pair<_Tp1, _Tp2>& __in) |
|
|
97 |
{ return __pair_get<_Int>::__get(__in); } |
|
|
98 |
|
|
|
99 |
template |
|
|
100 |
inline const typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type& |
|
|
101 |
get(const std::pair<_Tp1, _Tp2>& __in) |
|
|
102 |
{ return __pair_get<_Int>::__const_get(__in); } |
|
|
103 |
|
|
|
104 |
_GLIBCXX_END_NAMESPACE_VERSION |
|
|
105 |
} |
|
|
106 |
} |
|
|
107 |
|
|
|
108 |
#endif // _GLIBCXX_TR1_UTILITY |