* This is a Standard C++ Library header.
*/
-#ifndef _GLIBCXX_CXX0X_TUPLE
-#define _GLIBCXX_CXX0X_TUPLE 1
+#ifndef _GLIBCXX_TUPLE
+#define _GLIBCXX_TUPLE 1
#pragma GCC system_header
#ifndef __GXX_EXPERIMENTAL_CXX0X__
# include <c++0x_warning.h>
-#endif
+#else
#include <utility>
struct __add_ref<_Tp&>
{ typedef _Tp& type; };
- template<int _Idx, typename _Head, bool _IsEmpty>
+ template<std::size_t _Idx, typename _Head, bool _IsEmpty>
struct _Head_base;
- template<int _Idx, typename _Head>
+ template<std::size_t _Idx, typename _Head>
struct _Head_base<_Idx, _Head, true>
: public _Head
{
: _Head(__h) { }
template<typename _UHead>
- _Head_base(_UHead&& __h)
- : _Head(std::forward<_UHead>(__h)) { }
+ _Head_base(_UHead&& __h)
+ : _Head(std::forward<_UHead>(__h)) { }
_Head& _M_head() { return *this; }
const _Head& _M_head() const { return *this; }
+
+ void _M_swap_impl(_Head&&) { /* no-op */ }
};
- template<int _Idx, typename _Head>
+ template<std::size_t _Idx, typename _Head>
struct _Head_base<_Idx, _Head, false>
{
_Head_base()
: _M_head_impl(__h) { }
template<typename _UHead>
- _Head_base(_UHead&& __h)
- : _M_head_impl(std::forward<_UHead>(__h)) { }
+ _Head_base(_UHead&& __h)
+ : _M_head_impl(std::forward<_UHead>(__h)) { }
_Head& _M_head() { return _M_head_impl; }
const _Head& _M_head() const { return _M_head_impl; }
+ void
+ _M_swap_impl(_Head&& __h)
+ {
+ using std::swap;
+ swap(__h, _M_head_impl);
+ }
+
_Head _M_head_impl;
};
* point in the hierarchy; we use it to implement a constant-time
* get() operation.
*/
- template<int _Idx, typename... _Elements>
+ template<std::size_t _Idx, typename... _Elements>
struct _Tuple_impl;
/**
* Zero-element tuple implementation. This is the basis case for the
* inheritance recursion.
*/
- template<int _Idx>
- struct _Tuple_impl<_Idx> { };
+ template<std::size_t _Idx>
+ struct _Tuple_impl<_Idx>
+ {
+ protected:
+ void _M_swap_impl(_Tuple_impl&&) { /* no-op */ }
+ };
/**
* Recursive tuple implementation. Here we store the @c Head element
* and derive from a @c Tuple_impl containing the remaining elements
* (which contains the @c Tail).
*/
- template<int _Idx, typename _Head, typename... _Tail>
+ template<std::size_t _Idx, typename _Head, typename... _Tail>
struct _Tuple_impl<_Idx, _Head, _Tail...>
: public _Tuple_impl<_Idx + 1, _Tail...>,
private _Head_base<_Idx, _Head, std::is_empty<_Head>::value>
_M_tail() = std::move(__in._M_tail());
return *this;
}
+
+ protected:
+ void
+ _M_swap_impl(_Tuple_impl&& __in)
+ {
+ _Base::_M_swap_impl(__in._M_head());
+ _Inherited::_M_swap_impl(__in._M_tail());
+ }
};
+ /// tuple
template<typename... _Elements>
class tuple : public _Tuple_impl<0, _Elements...>
{
static_cast<_Inherited&>(*this) = std::move(__in);
return *this;
}
+
+ void
+ swap(tuple&& __in)
+ { _Inherited::_M_swap_impl(__in); }
};
- template<> class tuple<> { };
- // 2-element tuple, with construction and assignment from a pair.
+ template<>
+ class tuple<>
+ {
+ public:
+ void swap(tuple&&) { /* no-op */ }
+ };
+
+ /// tuple (2-element), with construction and assignment from a pair.
template<typename _T1, typename _T2>
class tuple<_T1, _T2> : public _Tuple_impl<0, _T1, _T2>
{
this->_M_tail()._M_head() = std::move(__in.second);
return *this;
}
+
+ void
+ swap(tuple&& __in)
+ {
+ using std::swap;
+ swap(this->_M_head(), __in._M_head());
+ swap(this->_M_tail()._M_head(), __in._M_tail()._M_head());
+ }
};
/// Gives the type of the ith element of a given tuple type.
- template<int __i, typename _Tp>
+ template<std::size_t __i, typename _Tp>
struct tuple_element;
/**
* Recursive case for tuple_element: strip off the first element in
* the tuple and retrieve the (i-1)th element of the remaining tuple.
*/
- template<int __i, typename _Head, typename... _Tail>
+ template<std::size_t __i, typename _Head, typename... _Tail>
struct tuple_element<__i, tuple<_Head, _Tail...> >
: tuple_element<__i - 1, tuple<_Tail...> > { };
template<typename _Tp>
struct tuple_size;
- /// @brief class tuple_size
+ /// class tuple_size
template<typename... _Elements>
struct tuple_size<tuple<_Elements...> >
{
- static const int value = sizeof...(_Elements);
+ static const std::size_t value = sizeof...(_Elements);
};
template<typename... _Elements>
- const int tuple_size<tuple<_Elements...> >::value;
+ const std::size_t tuple_size<tuple<_Elements...> >::value;
- template<int __i, typename _Head, typename... _Tail>
+ template<std::size_t __i, typename _Head, typename... _Tail>
inline typename __add_ref<_Head>::type
__get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t)
{ return __t._M_head(); }
- template<int __i, typename _Head, typename... _Tail>
+ template<std::size_t __i, typename _Head, typename... _Tail>
inline typename __add_c_ref<_Head>::type
__get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t)
{ return __t._M_head(); }
// Return a reference (const reference) to the ith element of a tuple.
// Any const or non-const ref elements are returned with their original type.
- template<int __i, typename... _Elements>
+ template<std::size_t __i, typename... _Elements>
inline typename __add_ref<
typename tuple_element<__i, tuple<_Elements...> >::type
>::type
get(tuple<_Elements...>& __t)
{ return __get_helper<__i>(__t); }
- template<int __i, typename... _Elements>
+ template<std::size_t __i, typename... _Elements>
inline typename __add_c_ref<
typename tuple_element<__i, tuple<_Elements...> >::type
>::type
{ return __get_helper<__i>(__t); }
// This class helps construct the various comparison operations on tuples
- template<int __check_equal_size, int __i, int __j,
+ template<std::size_t __check_equal_size, std::size_t __i, std::size_t __j,
typename _Tp, typename _Up>
struct __tuple_compare;
- template<int __i, int __j, typename _Tp, typename _Up>
+ template<std::size_t __i, std::size_t __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));
+ __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));
+ __tuple_compare<0, __i + 1, __j, _Tp, _Up>::__less(__t, __u));
}
};
- template<int __i, typename _Tp, typename _Up>
+ template<std::size_t __i, typename _Tp, typename _Up>
struct __tuple_compare<0, __i, __i, _Tp, _Up>
{
static bool __eq(const _Tp&, const _Up&)
{
typedef tuple<_TElements...> _Tp;
typedef tuple<_UElements...> _Up;
- return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
+ return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
}
{
typedef tuple<_TElements...> _Tp;
typedef tuple<_UElements...> _Up;
- return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
+ return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Up>::value,
0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
}
return __result_type(std::forward<_Elements>(__args)...);
}
- template<int...> struct __index_holder { };
+ template<std::size_t...> struct __index_holder { };
- template<int __i, typename _IdxHolder, typename... _Elements>
+ template<std::size_t __i, typename _IdxHolder, typename... _Elements>
struct __index_holder_impl;
- template<int __i, int... _Indexes, typename _IdxHolder, typename... _Elements>
+ template<std::size_t __i, std::size_t... _Indexes, typename _IdxHolder,
+ typename... _Elements>
struct __index_holder_impl<__i, __index_holder<_Indexes...>,
_IdxHolder, _Elements...>
{
_Elements...>::type type;
};
- template<int __i, int... _Indexes>
+ template<std::size_t __i, std::size_t... _Indexes>
struct __index_holder_impl<__i, __index_holder<_Indexes...> >
{ typedef __index_holder<_Indexes...> type; };
struct __make_index_holder
: __index_holder_impl<0, __index_holder<>, _Elements...> { };
- template<typename... _TElements, int... _TIdx,
- typename... _UElements, int... _UIdx>
+ template<typename... _TElements, std::size_t... _TIdx,
+ typename... _UElements, std::size_t... _UIdx>
inline tuple<_TElements..., _UElements...>
__tuple_cat_helper(const tuple<_TElements...>& __t,
const __index_holder<_TIdx...>&,
{ return tuple<_TElements..., _UElements...>(get<_TIdx>(__t)...,
get<_UIdx>(__u)...); }
- template<typename... _TElements, int... _TIdx,
- typename... _UElements, int... _UIdx>
+ template<typename... _TElements, std::size_t... _TIdx,
+ typename... _UElements, std::size_t... _UIdx>
inline tuple<_TElements..., _UElements...>
__tuple_cat_helper(tuple<_TElements...>&& __t,
const __index_holder<_TIdx...>&,
{ return tuple<_TElements..., _UElements...>
(std::move(get<_TIdx>(__t))..., get<_UIdx>(__u)...); }
- template<typename... _TElements, int... _TIdx,
- typename... _UElements, int... _UIdx>
+ template<typename... _TElements, std::size_t... _TIdx,
+ typename... _UElements, std::size_t... _UIdx>
inline tuple<_TElements..., _UElements...>
__tuple_cat_helper(const tuple<_TElements...>& __t,
const __index_holder<_TIdx...>&,
{ return tuple<_TElements..., _UElements...>
(get<_TIdx>(__t)..., std::move(get<_UIdx>(__u))...); }
- template<typename... _TElements, int... _TIdx,
- typename... _UElements, int... _UIdx>
+ template<typename... _TElements, std::size_t... _TIdx,
+ typename... _UElements, std::size_t... _UIdx>
inline tuple<_TElements..., _UElements...>
__tuple_cat_helper(tuple<_TElements...>&& __t,
const __index_holder<_TIdx...>&,
template<typename... _TElements, typename... _UElements>
inline tuple<_TElements..., _UElements...>
tuple_cat(const tuple<_TElements...>& __t, const tuple<_UElements...>& __u)
- {
+ {
return __tuple_cat_helper(__t, typename
__make_index_holder<_TElements...>::type(),
__u, typename
tie(_Elements&... __args)
{ return tuple<_Elements&...>(__args...); }
+ template<typename... _Elements>
+ inline void
+ swap(tuple<_Elements...>& __x, tuple<_Elements...>& __y)
+ { __x.swap(__y); }
+
+ template<typename... _Elements>
+ inline void
+ swap(tuple<_Elements...>&& __x, tuple<_Elements...>& __y)
+ { __x.swap(__y); }
+
+ template<typename... _Elements>
+ inline void
+ swap(tuple<_Elements...>& __x, tuple<_Elements...>&& __y)
+ { __x.swap(__y); }
+
// A class (and instance) which can be used in 'tie' when an element
// of a tuple is not required
struct _Swallow_assign
}; // anonymous namespace
}
-#endif // _GLIBCXX_CXX0X_TUPLE
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+#endif // _GLIBCXX_TUPLE
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