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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
|
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___TUPLE
#define _LIBCPP___TUPLE
#include <__config>
#include <cstddef>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp> class _LIBCPP_TYPE_VIS_ONLY tuple_size;
template <class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_size<const _Tp>
: public tuple_size<_Tp> {};
template <class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_size<volatile _Tp>
: public tuple_size<_Tp> {};
template <class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_size<const volatile _Tp>
: public tuple_size<_Tp> {};
template <size_t _Ip, class _Tp> class _LIBCPP_TYPE_VIS_ONLY tuple_element;
template <size_t _Ip, class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, const _Tp>
{
public:
typedef typename add_const<typename tuple_element<_Ip, _Tp>::type>::type type;
};
template <size_t _Ip, class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, volatile _Tp>
{
public:
typedef typename add_volatile<typename tuple_element<_Ip, _Tp>::type>::type type;
};
template <size_t _Ip, class _Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, const volatile _Tp>
{
public:
typedef typename add_cv<typename tuple_element<_Ip, _Tp>::type>::type type;
};
template <class _Tp> struct __tuple_like : false_type {};
template <class _Tp> struct __tuple_like<const _Tp> : public __tuple_like<_Tp> {};
template <class _Tp> struct __tuple_like<volatile _Tp> : public __tuple_like<_Tp> {};
template <class _Tp> struct __tuple_like<const volatile _Tp> : public __tuple_like<_Tp> {};
// tuple specializations
#if !defined(_LIBCPP_HAS_NO_VARIADICS)
template <class ..._Tp> class _LIBCPP_TYPE_VIS_ONLY tuple;
template <class... _Tp> struct __tuple_like<tuple<_Tp...> > : true_type {};
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(tuple<_Tp...>&) _NOEXCEPT;
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, tuple<_Tp...> >::type&
get(const tuple<_Tp...>&) _NOEXCEPT;
template <size_t _Ip, class ..._Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, tuple<_Tp...> >::type&&
get(tuple<_Tp...>&&) _NOEXCEPT;
#endif
// pair specializations
template <class _T1, class _T2> struct _LIBCPP_TYPE_VIS_ONLY pair;
template <class _T1, class _T2> struct __tuple_like<pair<_T1, _T2> > : true_type {};
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(pair<_T1, _T2>&) _NOEXCEPT;
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const typename tuple_element<_Ip, pair<_T1, _T2> >::type&
get(const pair<_T1, _T2>&) _NOEXCEPT;
#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
template <size_t _Ip, class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
typename tuple_element<_Ip, pair<_T1, _T2> >::type&&
get(pair<_T1, _T2>&&) _NOEXCEPT;
#endif
// array specializations
template <class _Tp, size_t _Size> struct _LIBCPP_TYPE_VIS_ONLY array;
template <class _Tp, size_t _Size> struct __tuple_like<array<_Tp, _Size> > : true_type {};
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&
get(array<_Tp, _Size>&) _NOEXCEPT;
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
const _Tp&
get(const array<_Tp, _Size>&) _NOEXCEPT;
#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES)
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp&&
get(array<_Tp, _Size>&&) _NOEXCEPT;
#endif
#if !defined(_LIBCPP_HAS_NO_VARIADICS)
// __make_tuple_indices
template <size_t...> struct __tuple_indices {};
template <size_t _Sp, class _IntTuple, size_t _Ep>
struct __make_indices_imp;
template <size_t _Sp, size_t ..._Indices, size_t _Ep>
struct __make_indices_imp<_Sp, __tuple_indices<_Indices...>, _Ep>
{
typedef typename __make_indices_imp<_Sp+1, __tuple_indices<_Indices..., _Sp>, _Ep>::type type;
};
template <size_t _Ep, size_t ..._Indices>
struct __make_indices_imp<_Ep, __tuple_indices<_Indices...>, _Ep>
{
typedef __tuple_indices<_Indices...> type;
};
template <size_t _Ep, size_t _Sp = 0>
struct __make_tuple_indices
{
static_assert(_Sp <= _Ep, "__make_tuple_indices input error");
typedef typename __make_indices_imp<_Sp, __tuple_indices<>, _Ep>::type type;
};
// __tuple_types
template <class ..._Tp> struct __tuple_types {};
template <size_t _Ip>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, __tuple_types<> >
{
public:
static_assert(_Ip == 0, "tuple_element index out of range");
static_assert(_Ip != 0, "tuple_element index out of range");
};
template <class _Hp, class ..._Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<0, __tuple_types<_Hp, _Tp...> >
{
public:
typedef _Hp type;
};
template <size_t _Ip, class _Hp, class ..._Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_element<_Ip, __tuple_types<_Hp, _Tp...> >
{
public:
typedef typename tuple_element<_Ip-1, __tuple_types<_Tp...> >::type type;
};
template <class ..._Tp>
class _LIBCPP_TYPE_VIS_ONLY tuple_size<__tuple_types<_Tp...> >
: public integral_constant<size_t, sizeof...(_Tp)>
{
};
template <class... _Tp> struct __tuple_like<__tuple_types<_Tp...> > : true_type {};
// __make_tuple_types
// __make_tuple_types<_Tuple<_Types...>, _Ep, _Sp>::type is a
// __tuple_types<_Types...> using only those _Types in the range [_Sp, _Ep).
// _Sp defaults to 0 and _Ep defaults to tuple_size<_Tuple>. If _Tuple is a
// lvalue_reference type, then __tuple_types<_Types&...> is the result.
template <class _TupleTypes, class _Tp, size_t _Sp, size_t _Ep>
struct __make_tuple_types_imp;
template <class ..._Types, class _Tp, size_t _Sp, size_t _Ep>
struct __make_tuple_types_imp<__tuple_types<_Types...>, _Tp, _Sp, _Ep>
{
typedef typename remove_reference<_Tp>::type _Tpr;
typedef typename __make_tuple_types_imp<__tuple_types<_Types...,
typename conditional<is_lvalue_reference<_Tp>::value,
typename tuple_element<_Sp, _Tpr>::type&,
typename tuple_element<_Sp, _Tpr>::type>::type>,
_Tp, _Sp+1, _Ep>::type type;
};
template <class ..._Types, class _Tp, size_t _Ep>
struct __make_tuple_types_imp<__tuple_types<_Types...>, _Tp, _Ep, _Ep>
{
typedef __tuple_types<_Types...> type;
};
template <class _Tp, size_t _Ep = tuple_size<typename remove_reference<_Tp>::type>::value, size_t _Sp = 0>
struct __make_tuple_types
{
static_assert(_Sp <= _Ep, "__make_tuple_types input error");
typedef typename __make_tuple_types_imp<__tuple_types<>, _Tp, _Sp, _Ep>::type type;
};
// __tuple_convertible
template <class, class>
struct __tuple_convertible_imp : public false_type {};
template <class _Tp0, class ..._Tp, class _Up0, class ..._Up>
struct __tuple_convertible_imp<__tuple_types<_Tp0, _Tp...>, __tuple_types<_Up0, _Up...> >
: public integral_constant<bool,
is_convertible<_Tp0, _Up0>::value &&
__tuple_convertible_imp<__tuple_types<_Tp...>, __tuple_types<_Up...> >::value> {};
template <>
struct __tuple_convertible_imp<__tuple_types<>, __tuple_types<> >
: public true_type {};
template <bool, class, class>
struct __tuple_convertible_apply : public false_type {};
template <class _Tp, class _Up>
struct __tuple_convertible_apply<true, _Tp, _Up>
: public __tuple_convertible_imp<
typename __make_tuple_types<_Tp>::type
, typename __make_tuple_types<_Up>::type
>
{};
template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
bool = __tuple_like<_Up>::value>
struct __tuple_convertible
: public false_type {};
template <class _Tp, class _Up>
struct __tuple_convertible<_Tp, _Up, true, true>
: public __tuple_convertible_apply<tuple_size<typename remove_reference<_Tp>::type>::value ==
tuple_size<_Up>::value, _Tp, _Up>
{};
// __tuple_constructible
template <class, class>
struct __tuple_constructible_imp : public false_type {};
template <class _Tp0, class ..._Tp, class _Up0, class ..._Up>
struct __tuple_constructible_imp<__tuple_types<_Tp0, _Tp...>, __tuple_types<_Up0, _Up...> >
: public integral_constant<bool,
is_constructible<_Up0, _Tp0>::value &&
__tuple_constructible_imp<__tuple_types<_Tp...>, __tuple_types<_Up...> >::value> {};
template <>
struct __tuple_constructible_imp<__tuple_types<>, __tuple_types<> >
: public true_type {};
template <bool _SameSize, class, class>
struct __tuple_constructible_apply : public false_type {};
template <class _Tp, class _Up>
struct __tuple_constructible_apply<true, _Tp, _Up>
: public __tuple_constructible_imp<
typename __make_tuple_types<_Tp>::type
, typename __make_tuple_types<_Up>::type
>
{};
template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
bool = __tuple_like<_Up>::value>
struct __tuple_constructible
: public false_type {};
template <class _Tp, class _Up>
struct __tuple_constructible<_Tp, _Up, true, true>
: public __tuple_constructible_apply<tuple_size<typename remove_reference<_Tp>::type>::value ==
tuple_size<_Up>::value, _Tp, _Up>
{};
// __tuple_assignable
template <class, class>
struct __tuple_assignable_imp : public false_type {};
template <class _Tp0, class ..._Tp, class _Up0, class ..._Up>
struct __tuple_assignable_imp<__tuple_types<_Tp0, _Tp...>, __tuple_types<_Up0, _Up...> >
: public integral_constant<bool,
is_assignable<_Up0&, _Tp0>::value &&
__tuple_assignable_imp<__tuple_types<_Tp...>, __tuple_types<_Up...> >::value> {};
template <>
struct __tuple_assignable_imp<__tuple_types<>, __tuple_types<> >
: public true_type {};
template <bool, class, class>
struct __tuple_assignable_apply : public false_type {};
template <class _Tp, class _Up>
struct __tuple_assignable_apply<true, _Tp, _Up>
: __tuple_assignable_imp<
typename __make_tuple_types<_Tp>::type
, typename __make_tuple_types<_Up>::type
>
{};
template <class _Tp, class _Up, bool = __tuple_like<typename remove_reference<_Tp>::type>::value,
bool = __tuple_like<_Up>::value>
struct __tuple_assignable
: public false_type {};
template <class _Tp, class _Up>
struct __tuple_assignable<_Tp, _Up, true, true>
: public __tuple_assignable_apply<tuple_size<typename remove_reference<_Tp>::type>::value ==
tuple_size<_Up>::value, _Tp, _Up>
{};
#endif // _LIBCPP_HAS_NO_VARIADICS
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TUPLE
|
