32 #ifndef _GLIBCXX_TR1_TUPLE
33 #define _GLIBCXX_TR1_TUPLE 1
35 #pragma GCC system_header
44 template<
typename _Tp>
46 {
typedef const _Tp& type; };
48 template<
typename _Tp>
49 struct __add_c_ref<_Tp&>
50 {
typedef _Tp& type; };
53 template<
typename _Tp>
55 {
typedef _Tp& type; };
57 template<
typename _Tp>
58 struct __add_ref<_Tp&>
59 {
typedef _Tp& type; };
69 template<
int _Idx,
typename... _Elements>
77 struct _Tuple_impl<_Idx> { };
84 template<
int _Idx,
typename _Head,
typename... _Tail>
85 struct _Tuple_impl<_Idx, _Head, _Tail...>
86 :
public _Tuple_impl<_Idx + 1, _Tail...>
88 typedef _Tuple_impl<_Idx + 1, _Tail...> _Inherited;
92 _Inherited& _M_tail() {
return *
this; }
93 const _Inherited& _M_tail()
const {
return *
this; }
95 _Tuple_impl() : _Inherited(), _M_head() { }
98 _Tuple_impl(
typename __add_c_ref<_Head>::type __head,
99 typename __add_c_ref<_Tail>::type... __tail)
100 : _Inherited(__tail...), _M_head(__head) { }
102 template<
typename... _UElements>
103 _Tuple_impl(
const _Tuple_impl<_Idx, _UElements...>& __in)
104 : _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
106 _Tuple_impl(
const _Tuple_impl& __in)
107 : _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
109 template<
typename... _UElements>
111 operator=(
const _Tuple_impl<_Idx, _UElements...>& __in)
113 _M_head = __in._M_head;
114 _M_tail() = __in._M_tail();
119 operator=(
const _Tuple_impl& __in)
121 _M_head = __in._M_head;
122 _M_tail() = __in._M_tail();
127 template<
typename... _Elements>
128 class tuple :
public _Tuple_impl<0, _Elements...>
130 typedef _Tuple_impl<0, _Elements...> _Inherited;
133 tuple() : _Inherited() { }
136 tuple(
typename __add_c_ref<_Elements>::type... __elements)
137 : _Inherited(__elements...) { }
139 template<
typename... _UElements>
140 tuple(
const tuple<_UElements...>& __in)
141 : _Inherited(__in) { }
143 tuple(
const tuple& __in)
144 : _Inherited(__in) { }
146 template<
typename... _UElements>
148 operator=(
const tuple<_UElements...>& __in)
150 static_cast<_Inherited&
>(*this) = __in;
155 operator=(
const tuple& __in)
157 static_cast<_Inherited&
>(*this) = __in;
162 template<>
class tuple<> { };
165 template<
typename _T1,
typename _T2>
166 class tuple<_T1, _T2> :
public _Tuple_impl<0, _T1, _T2>
168 typedef _Tuple_impl<0, _T1, _T2> _Inherited;
171 tuple() : _Inherited() { }
174 tuple(
typename __add_c_ref<_T1>::type __a1,
175 typename __add_c_ref<_T2>::type __a2)
176 : _Inherited(__a1, __a2) { }
178 template<
typename _U1,
typename _U2>
179 tuple(
const tuple<_U1, _U2>& __in)
180 : _Inherited(__in) { }
182 tuple(
const tuple& __in)
183 : _Inherited(__in) { }
185 template<
typename _U1,
typename _U2>
186 tuple(
const pair<_U1, _U2>& __in)
187 : _Inherited(_Tuple_impl<0,
188 typename __add_c_ref<_U1>::type,
189 typename __add_c_ref<_U2>::type>(__in.first,
193 template<
typename _U1,
typename _U2>
195 operator=(
const tuple<_U1, _U2>& __in)
197 static_cast<_Inherited&
>(*this) = __in;
202 operator=(
const tuple& __in)
204 static_cast<_Inherited&
>(*this) = __in;
208 template<
typename _U1,
typename _U2>
210 operator=(
const pair<_U1, _U2>& __in)
212 this->_M_head = __in.first;
213 this->_M_tail()._M_head = __in.second;
220 template<
int __i,
typename _Tp>
221 struct tuple_element;
227 template<
int __i,
typename _Head,
typename... _Tail>
228 struct tuple_element<__i, tuple<_Head, _Tail...> >
229 : tuple_element<__i - 1, tuple<_Tail...> > { };
234 template<
typename _Head,
typename... _Tail>
235 struct tuple_element<0, tuple<_Head, _Tail...> >
241 template<
typename _Tp>
245 template<
typename... _Elements>
246 struct tuple_size<tuple<_Elements...> >
248 static const int value =
sizeof...(_Elements);
251 template<
typename... _Elements>
252 const int tuple_size<tuple<_Elements...> >::value;
254 template<
int __i,
typename _Head,
typename... _Tail>
255 inline typename __add_ref<_Head>::type
256 __get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t)
261 template<
int __i,
typename _Head,
typename... _Tail>
262 inline typename __add_c_ref<_Head>::type
263 __get_helper(
const _Tuple_impl<__i, _Head, _Tail...>& __t)
270 template<
int __i,
typename... _Elements>
271 inline typename __add_ref<
272 typename tuple_element<__i, tuple<_Elements...> >::type
274 get(tuple<_Elements...>& __t)
276 return __get_helper<__i>(__t);
279 template<
int __i,
typename... _Elements>
280 inline typename __add_c_ref<
281 typename tuple_element<__i, tuple<_Elements...> >::type
283 get(
const tuple<_Elements...>& __t)
285 return __get_helper<__i>(__t);
289 template<
int __check_equal_size,
int __i,
int __j,
290 typename _Tp,
typename _Up>
291 struct __tuple_compare;
293 template<
int __i,
int __j,
typename _Tp,
typename _Up>
294 struct __tuple_compare<0, __i, __j, _Tp, _Up>
296 static bool __eq(
const _Tp& __t,
const _Up& __u)
298 return (get<__i>(__t) == get<__i>(__u) &&
299 __tuple_compare<0, __i+1, __j, _Tp, _Up>::__eq(__t, __u));
302 static bool __less(
const _Tp& __t,
const _Up& __u)
304 return ((get<__i>(__t) < get<__i>(__u))
305 || !(get<__i>(__u) < get<__i>(__t)) &&
306 __tuple_compare<0, __i+1, __j, _Tp, _Up>::__less(__t, __u));
310 template<
int __i,
typename _Tp,
typename _Up>
311 struct __tuple_compare<0, __i, __i, _Tp, _Up>
313 static bool __eq(
const _Tp&,
const _Up&)
316 static bool __less(
const _Tp&,
const _Up&)
320 template<
typename... _TElements,
typename... _UElements>
322 operator==(
const tuple<_TElements...>& __t,
323 const tuple<_UElements...>& __u)
325 typedef tuple<_TElements...> _Tp;
326 typedef tuple<_UElements...> _Up;
327 return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
328 0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
331 template<
typename... _TElements,
typename... _UElements>
333 operator<(
const tuple<_TElements...>& __t,
334 const tuple<_UElements...>& __u)
336 typedef tuple<_TElements...> _Tp;
337 typedef tuple<_UElements...> _Up;
338 return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
339 0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
342 template<
typename... _TElements,
typename... _UElements>
344 operator!=(
const tuple<_TElements...>& __t,
345 const tuple<_UElements...>& __u)
346 {
return !(__t == __u); }
348 template<
typename... _TElements,
typename... _UElements>
350 operator>(
const tuple<_TElements...>& __t,
351 const tuple<_UElements...>& __u)
352 {
return __u < __t; }
354 template<
typename... _TElements,
typename... _UElements>
356 operator<=(
const tuple<_TElements...>& __t,
357 const tuple<_UElements...>& __u)
358 {
return !(__u < __t); }
360 template<
typename... _TElements,
typename... _UElements>
362 operator>=(
const tuple<_TElements...>& __t,
363 const tuple<_UElements...>& __u)
364 {
return !(__t < __u); }
366 template<
typename _Tp>
367 class reference_wrapper;
370 template<
typename _Tp>
371 struct __strip_reference_wrapper
376 template<
typename _Tp>
377 struct __strip_reference_wrapper<reference_wrapper<_Tp> >
382 template<
typename _Tp>
383 struct __strip_reference_wrapper<const reference_wrapper<_Tp> >
388 template<
typename... _Elements>
389 inline tuple<typename __strip_reference_wrapper<_Elements>::__type...>
390 make_tuple(_Elements... __args)
392 typedef tuple<typename __strip_reference_wrapper<_Elements>::__type...>
394 return __result_type(__args...);
397 template<
typename... _Elements>
398 inline tuple<_Elements&...>
399 tie(_Elements&... __args)
401 return tuple<_Elements&...>(__args...);
406 struct _Swallow_assign
410 operator=(
const _Tp&)
417 _Swallow_assign ignore;
422 #endif // _GLIBCXX_TR1_TUPLE