1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
// class template tuple -*- C++ -*-
// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
/** @file tr1/tuple
* This is a TR1 C++ Library header.
*/
// Chris Jefferson <chris@bubblescope.net>
#ifndef _TR1_TUPLE
#define _TR1_TUPLE 1
#include <tr1/utility>
#include <tr1/ref_fwd.h>
namespace std
{
_GLIBCXX_BEGIN_NAMESPACE(tr1)
// An implementation specific class which is used in the tuple class
// when the tuple is not maximum possible size.
struct _NullClass { };
/// Gives the type of the ith element of a given tuple type.
template<int __i, typename _Tp>
struct tuple_element;
/// Finds the size of a given tuple type.
template<typename _Tp>
struct tuple_size;
// Adds a const reference to a non-reference type.
template<typename _Tp>
struct __add_c_ref
{ typedef const _Tp& type; };
template<typename _Tp>
struct __add_c_ref<_Tp&>
{ typedef _Tp& type; };
// Adds a reference to a non-reference type.
template<typename _Tp>
struct __add_ref
{ typedef _Tp& type; };
template<typename _Tp>
struct __add_ref<_Tp&>
{ typedef _Tp& type; };
// Class used in the implementation of get
template<int __i, typename _Tp>
struct __get_helper;
// Returns a const reference to the ith element of a tuple.
// Any const or non-const ref elements are returned with their original type.
// This class helps construct the various comparison operations on tuples
template<int __check_equal_size, int __i, int __j, typename _Tp, typename _Up>
struct __tuple_compare;
// Helper which adds a reference to a type when given a reference_wrapper
template<typename _Tp>
struct __strip_reference_wrapper
{
typedef _Tp __type;
};
template<typename _Tp>
struct __strip_reference_wrapper<reference_wrapper<_Tp> >
{
typedef _Tp& __type;
};
template<typename _Tp>
struct __strip_reference_wrapper<const reference_wrapper<_Tp> >
{
typedef _Tp& __type;
};
#include "tuple_defs.h"
template<int __i, int __j, typename _Tp, typename _Up>
struct __tuple_compare<0, __i, __j, _Tp, _Up>
{
static bool __eq(const _Tp& __t, const _Up& __u)
{
return get<__i>(__t) == get<__i>(__u) &&
__tuple_compare<0, __i+1, __j, _Tp, _Up>::__eq(__t, __u);
}
static bool __less(const _Tp& __t, const _Up& __u)
{
return (get<__i>(__t) < get<__i>(__u)) || !(get<__i>(__u) < get<__i>(__t)) &&
__tuple_compare<0, __i+1, __j, _Tp, _Up>::__less(__t, __u);
}
};
template<int __i, typename _Tp, typename _Up>
struct __tuple_compare<0, __i, __i, _Tp, _Up>
{
static bool __eq(const _Tp&, const _Up&)
{ return true; }
static bool __less(const _Tp&, const _Up&)
{ return false; }
};
// A class (and instance) which can be used in 'tie' when an element
// of a tuple is not required
struct swallow_assign
{
template<class T>
swallow_assign&
operator=(const T&)
{ return *this; }
};
// TODO: Put this in some kind of shared file.
namespace
{
swallow_assign ignore;
}; // anonymous namespace
_GLIBCXX_END_NAMESPACE
}
#define _GLIBCXX_CAT(x,y) _GLIBCXX_CAT2(x,y)
#define _GLIBCXX_CAT2(x,y) x##y
#define _SHORT_REPEAT
#define _GLIBCXX_REPEAT_HEADER <tr1/tuple_iterate.h>
#include <tr1/repeat.h>
#undef _GLIBCXX_REPEAT_HEADER
#undef _SHORT_REPEAT
#include <tr1/functional>
#endif
|
