tuple: New.
2007-12-26 Chris Fairles <chris.fairles@gmail.com> Paolo Carlini <pcarlini@suse.de> * include/std/tuple: New. * include/tr1/tuple: New, adjust from tr1_impl/tuple code. * include/tr1_impl/tuple: Remove. * include/Makefile.am: Update. * include/Makefile.in: Regenerate. Co-Authored-By: Paolo Carlini <pcarlini@suse.de> From-SVN: r131183
This commit is contained in:
Chris Fairles
Paolo Carlini
parent
a8eabe7475
commit
894d0b1502
6 changed files with 911 additions and 468 deletions
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@ -1,3 +1,12 @@
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2007-12-26 Chris Fairles <chris.fairles@gmail.com>
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Paolo Carlini <pcarlini@suse.de>
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* include/std/tuple: New.
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* include/tr1/tuple: New, adjust from tr1_impl/tuple code.
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* include/tr1_impl/tuple: Remove.
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* include/Makefile.am: Update.
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* include/Makefile.in: Regenerate.
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2007-12-25 Paolo Carlini <pcarlini@suse.de>
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* include/tr1_impl/hashtable_policy.h (__lower_bound): Add.
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@ -595,7 +595,6 @@ tr1_impl_headers = \
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${tr1_impl_srcdir}/random \
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${tr1_impl_srcdir}/random.tcc \
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${tr1_impl_srcdir}/regex \
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${tr1_impl_srcdir}/tuple \
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${tr1_impl_srcdir}/type_traits \
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${tr1_impl_srcdir}/unordered_map \
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${tr1_impl_srcdir}/unordered_set \
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@ -841,7 +841,6 @@ tr1_impl_headers = \
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${tr1_impl_srcdir}/random \
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${tr1_impl_srcdir}/random.tcc \
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${tr1_impl_srcdir}/regex \
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${tr1_impl_srcdir}/tuple \
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${tr1_impl_srcdir}/type_traits \
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${tr1_impl_srcdir}/unordered_map \
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${tr1_impl_srcdir}/unordered_set \
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@ -40,24 +40,517 @@
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# include <c++0x_warning.h>
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#endif
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#if defined(_GLIBCXX_INCLUDE_AS_TR1)
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# error C++0x header cannot be included from TR1 header
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#endif
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#include <utility>
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#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
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# include <tr1_impl/tuple>
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#else
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# define _GLIBCXX_INCLUDE_AS_CXX0X
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# define _GLIBCXX_BEGIN_NAMESPACE_TR1
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# define _GLIBCXX_END_NAMESPACE_TR1
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# define _GLIBCXX_TR1
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# include <tr1_impl/tuple>
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# undef _GLIBCXX_TR1
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# undef _GLIBCXX_END_NAMESPACE_TR1
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# undef _GLIBCXX_BEGIN_NAMESPACE_TR1
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# undef _GLIBCXX_INCLUDE_AS_CXX0X
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#endif
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namespace std
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{
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// Adds a const reference to a non-reference type.
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template<typename _Tp>
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struct __add_c_ref
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{ typedef const _Tp& type; };
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template<typename _Tp>
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struct __add_c_ref<_Tp&>
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{ typedef _Tp& type; };
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// Adds a reference to a non-reference type.
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template<typename _Tp>
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struct __add_ref
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{ typedef _Tp& type; };
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template<typename _Tp>
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struct __add_ref<_Tp&>
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{ typedef _Tp& type; };
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template<int _Idx, typename _Head, bool _IsEmpty>
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struct _Head_base;
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template<int _Idx, typename _Head>
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struct _Head_base<_Idx, _Head, true>
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: public _Head
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{
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_Head_base()
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: _Head() { }
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_Head_base(typename __add_c_ref<_Head>::type __h)
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: _Head(__h) { }
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_Head_base(typename std::remove_reference<_Head>::type&& __h)
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: _Head(std::forward<_Head>(__h)) { }
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_Head& _M_head() { return *this; }
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const _Head& _M_head() const { return *this; }
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};
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template<int _Idx, typename _Head>
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struct _Head_base<_Idx, _Head, false>
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{
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_Head_base()
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: _M_head_impl() { }
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_Head_base(typename __add_c_ref<_Head>::type __h)
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: _M_head_impl(__h) { }
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_Head_base(typename std::remove_reference<_Head>::type&& __h)
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: _M_head_impl(std::move(__h)) { }
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_Head& _M_head() { return _M_head_impl; }
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const _Head& _M_head() const { return _M_head_impl; }
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_Head _M_head_impl;
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};
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/**
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* @if maint
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* Contains the actual implementation of the @c tuple template, stored
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* as a recursive inheritance hierarchy from the first element (most
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* derived class) to the last (least derived class). The @c Idx
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* parameter gives the 0-based index of the element stored at this
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* point in the hierarchy; we use it to implement a constant-time
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* get() operation.
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* @endif
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*/
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template<int _Idx, typename... _Elements>
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struct _Tuple_impl;
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/**
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* @if maint
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* Zero-element tuple implementation. This is the basis case for the
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* inheritance recursion.
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* @endif maint
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*/
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template<int _Idx>
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struct _Tuple_impl<_Idx> { };
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/**
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* @if maint
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* Recursive tuple implementation. Here we store the @c Head element
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* and derive from a @c Tuple_impl containing the remaining elements
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* (which contains the @c Tail).
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* @endif
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*/
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template<int _Idx, typename _Head, typename... _Tail>
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struct _Tuple_impl<_Idx, _Head, _Tail...>
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: public _Tuple_impl<_Idx + 1, _Tail...>,
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private _Head_base<_Idx, _Head, std::is_empty<_Head>::value>
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{
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typedef _Tuple_impl<_Idx + 1, _Tail...> _Inherited;
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typedef _Head_base<_Idx, _Head, std::is_empty<_Head>::value> _Base;
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_Head& _M_head() { return _Base::_M_head(); }
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const _Head& _M_head() const { return _Base::_M_head(); }
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_Inherited& _M_tail() { return *this; }
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const _Inherited& _M_tail() const { return *this; }
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_Tuple_impl()
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: _Inherited(), _Base() { }
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explicit
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_Tuple_impl(typename __add_c_ref<_Head>::type __head,
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typename __add_c_ref<_Tail>::type... __tail)
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: _Inherited(__tail...), _Base(__head) { }
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template<typename... _UElements>
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_Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
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: _Inherited(__in._M_tail()), _Base(__in._M_head()) { }
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_Tuple_impl(const _Tuple_impl& __in)
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: _Inherited(__in._M_tail()), _Base(__in._M_head()) { }
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template<typename... _UElements>
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_Tuple_impl&
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operator=(const _Tuple_impl<_Idx, _UElements...>& __in)
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{
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_M_head() = __in._M_head();
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_M_tail() = __in._M_tail();
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return *this;
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}
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_Tuple_impl&
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operator=(const _Tuple_impl& __in)
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{
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_M_head() = __in._M_head();
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_M_tail() = __in._M_tail();
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return *this;
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}
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};
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template<typename... _Elements>
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class tuple : public _Tuple_impl<0, _Elements...>
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{
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typedef _Tuple_impl<0, _Elements...> _Inherited;
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public:
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tuple()
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: _Inherited() { }
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explicit
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tuple(typename __add_c_ref<_Elements>::type... __elements)
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: _Inherited(__elements...) { }
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template<typename... _UElements>
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tuple(const tuple<_UElements...>& __in)
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: _Inherited(__in) { }
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tuple(const tuple& __in)
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: _Inherited(__in) { }
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template<typename... _UElements>
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tuple&
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operator=(const tuple<_UElements...>& __in)
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{
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static_cast<_Inherited&>(*this) = __in;
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return *this;
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}
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tuple&
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operator=(const tuple& __in)
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{
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static_cast<_Inherited&>(*this) = __in;
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return *this;
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}
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};
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template<> class tuple<> { };
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// 2-element tuple, with construction and assignment from a pair.
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template<typename _T1, typename _T2>
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class tuple<_T1, _T2> : public _Tuple_impl<0, _T1, _T2>
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{
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typedef _Tuple_impl<0, _T1, _T2> _Inherited;
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public:
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tuple()
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: _Inherited() { }
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explicit
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tuple(typename __add_c_ref<_T1>::type __a1,
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typename __add_c_ref<_T2>::type __a2)
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: _Inherited(__a1, __a2) { }
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template<typename _U1, typename _U2>
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tuple(const tuple<_U1, _U2>& __in)
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: _Inherited(__in) { }
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tuple(const tuple& __in)
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: _Inherited(__in) { }
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template<typename _U1, typename _U2>
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tuple(const pair<_U1, _U2>& __in)
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: _Inherited(_Tuple_impl<0,
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typename __add_c_ref<_U1>::type,
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typename __add_c_ref<_U2>::type>(__in.first,
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__in.second))
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{ }
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template<typename _U1, typename _U2>
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tuple&
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operator=(const tuple<_U1, _U2>& __in)
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{
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static_cast<_Inherited&>(*this) = __in;
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return *this;
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}
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tuple&
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operator=(const tuple& __in)
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{
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static_cast<_Inherited&>(*this) = __in;
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return *this;
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}
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template<typename _U1, typename _U2>
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tuple&
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operator=(const pair<_U1, _U2>& __in)
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{
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this->_M_head() = __in.first;
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this->_M_tail()._M_head() = __in.second;
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return *this;
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}
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};
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/// Gives the type of the ith element of a given tuple type.
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template<int __i, typename _Tp>
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struct tuple_element;
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/**
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* @if maint
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* Recursive case for tuple_element: strip off the first element in
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* the tuple and retrieve the (i-1)th element of the remaining tuple.
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* @endif
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*/
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template<int __i, typename _Head, typename... _Tail>
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struct tuple_element<__i, tuple<_Head, _Tail...> >
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: tuple_element<__i - 1, tuple<_Tail...> > { };
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/**
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* @if maint
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* Basis case for tuple_element: The first element is the one we're seeking.
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* @endif
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*/
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template<typename _Head, typename... _Tail>
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struct tuple_element<0, tuple<_Head, _Tail...> >
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{
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typedef _Head type;
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};
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/// Finds the size of a given tuple type.
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template<typename _Tp>
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struct tuple_size;
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/// @brief class tuple_size
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template<typename... _Elements>
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struct tuple_size<tuple<_Elements...> >
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{
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static const int value = sizeof...(_Elements);
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};
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template<typename... _Elements>
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const int tuple_size<tuple<_Elements...> >::value;
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template<int __i, typename _Head, typename... _Tail>
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inline typename __add_ref<_Head>::type
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__get_helper(_Tuple_impl<__i, _Head, _Tail...>& __t)
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{ return __t._M_head(); }
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template<int __i, typename _Head, typename... _Tail>
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inline typename __add_c_ref<_Head>::type
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__get_helper(const _Tuple_impl<__i, _Head, _Tail...>& __t)
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{ return __t._M_head(); }
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// Return a reference (const reference) to the ith element of a tuple.
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// Any const or non-const ref elements are returned with their original type.
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template<int __i, typename... _Elements>
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inline typename __add_ref<
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typename tuple_element<__i, tuple<_Elements...> >::type
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>::type
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get(tuple<_Elements...>& __t)
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{ return __get_helper<__i>(__t); }
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template<int __i, typename... _Elements>
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inline typename __add_c_ref<
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typename tuple_element<__i, tuple<_Elements...> >::type
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>::type
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get(const tuple<_Elements...>& __t)
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{ return __get_helper<__i>(__t); }
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// This class helps construct the various comparison operations on tuples
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template<int __check_equal_size, int __i, int __j,
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typename _Tp, typename _Up>
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struct __tuple_compare;
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template<int __i, int __j, typename _Tp, typename _Up>
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struct __tuple_compare<0, __i, __j, _Tp, _Up>
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{
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static bool __eq(const _Tp& __t, const _Up& __u)
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{
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return (get<__i>(__t) == get<__i>(__u) &&
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__tuple_compare<0, __i+1, __j, _Tp, _Up>::__eq(__t, __u));
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}
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static bool __less(const _Tp& __t, const _Up& __u)
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{
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return ((get<__i>(__t) < get<__i>(__u))
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|| !(get<__i>(__u) < get<__i>(__t)) &&
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__tuple_compare<0, __i+1, __j, _Tp, _Up>::__less(__t, __u));
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}
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};
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template<int __i, typename _Tp, typename _Up>
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struct __tuple_compare<0, __i, __i, _Tp, _Up>
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{
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static bool __eq(const _Tp&, const _Up&)
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{ return true; }
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static bool __less(const _Tp&, const _Up&)
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{ return false; }
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};
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template<typename... _TElements, typename... _UElements>
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bool
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operator==(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{
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typedef tuple<_TElements...> _Tp;
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typedef tuple<_UElements...> _Up;
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return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
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0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
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}
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template<typename... _TElements, typename... _UElements>
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bool
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operator<(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{
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typedef tuple<_TElements...> _Tp;
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typedef tuple<_UElements...> _Up;
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return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
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0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
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}
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template<typename... _TElements, typename... _UElements>
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inline bool
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operator!=(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{ return !(__t == __u); }
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template<typename... _TElements, typename... _UElements>
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inline bool
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operator>(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{ return __u < __t; }
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template<typename... _TElements, typename... _UElements>
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inline bool
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operator<=(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{ return !(__u < __t); }
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template<typename... _TElements, typename... _UElements>
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inline bool
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operator>=(const tuple<_TElements...>& __t,
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const tuple<_UElements...>& __u)
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{ return !(__t < __u); }
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// NB: DR 705.
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template<typename... _Elements>
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inline tuple<typename __decay_and_strip<_Elements>::__type...>
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make_tuple(_Elements&&... __args)
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{
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typedef tuple<typename __decay_and_strip<_Elements>::__type...>
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__result_type;
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return __result_type(std::forward<_Elements>(__args)...);
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}
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template<int...> struct __index_holder { };
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template<int __i, typename _IdxHolder, typename... _Elements>
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struct __index_holder_impl;
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template<int __i, int... _Indexes, typename _IdxHolder, typename... _Elements>
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struct __index_holder_impl<__i, __index_holder<_Indexes...>,
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_IdxHolder, _Elements...>
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{
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typedef typename __index_holder_impl<__i + 1,
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__index_holder<_Indexes..., __i>,
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_Elements...>::type type;
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};
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template<int __i, int... _Indexes>
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struct __index_holder_impl<__i, __index_holder<_Indexes...> >
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{ typedef __index_holder<_Indexes...> type; };
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template<typename... _Elements>
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struct __make_index_holder
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: __index_holder_impl<0, __index_holder<>, _Elements...> { };
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template<typename... _TElements, int... _TIdx,
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typename... _UElements, int... _UIdx>
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inline tuple<_TElements..., _UElements...>
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__tuple_cat_helper(const tuple<_TElements...>& __t,
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const __index_holder<_TIdx...>&,
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const tuple<_UElements...>& __u,
|
||||
const __index_holder<_UIdx...>&)
|
||||
{ return tuple<_TElements..., _UElements...>(get<_TIdx>(__t)...,
|
||||
get<_UIdx>(__u)...); }
|
||||
|
||||
template<typename... _TElements, int... _TIdx,
|
||||
typename... _UElements, int... _UIdx>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
__tuple_cat_helper(tuple<_TElements...>&& __t,
|
||||
const __index_holder<_TIdx...>&,
|
||||
const tuple<_UElements...>& __u,
|
||||
const __index_holder<_UIdx...>&)
|
||||
{ return tuple<_TElements..., _UElements...>(std::move(get<_TIdx>(__t))...,
|
||||
get<_UIdx>(__u)...); }
|
||||
|
||||
template<typename... _TElements, int... _TIdx,
|
||||
typename... _UElements, int... _UIdx>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
__tuple_cat_helper(const tuple<_TElements...>& __t,
|
||||
const __index_holder<_TIdx...>&,
|
||||
tuple<_UElements...>&& __u,
|
||||
const __index_holder<_UIdx...>&)
|
||||
{ return tuple<_TElements..., _UElements...>(get<_TIdx>(__t)...,
|
||||
std::move(get<_UIdx>(__u))...); }
|
||||
|
||||
template<typename... _TElements, int... _TIdx,
|
||||
typename... _UElements, int... _UIdx>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
__tuple_cat_helper(tuple<_TElements...>&& __t,
|
||||
const __index_holder<_TIdx...>&,
|
||||
tuple<_UElements...>&& __u,
|
||||
const __index_holder<_UIdx...>&)
|
||||
{ return tuple<_TElements..., _UElements...>(std::move(get<_TIdx>(__t))...,
|
||||
std::move(get<_UIdx>(__u))...); }
|
||||
|
||||
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
|
||||
__make_index_holder<_UElements...>::type());
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
tuple_cat(tuple<_TElements...>&& __t, const tuple<_UElements...>& __u)
|
||||
{
|
||||
return __tuple_cat_helper(std::move(__t), typename
|
||||
__make_index_holder<_TElements...>::type(),
|
||||
__u, typename
|
||||
__make_index_holder<_UElements...>::type());
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
tuple_cat(const tuple<_TElements...>& __t, tuple<_UElements...>&& __u)
|
||||
{
|
||||
return __tuple_cat_helper(__t, typename
|
||||
__make_index_holder<_TElements...>::type(),
|
||||
std::move(__u), typename
|
||||
__make_index_holder<_UElements...>::type());
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline tuple<_TElements..., _UElements...>
|
||||
tuple_cat(tuple<_TElements...>&& __t, tuple<_UElements...>&& __u)
|
||||
{
|
||||
return __tuple_cat_helper(std::move(__t), typename
|
||||
__make_index_holder<_TElements...>::type(),
|
||||
std::move(__u), typename
|
||||
__make_index_holder<_UElements...>::type());
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
tuple<_TElements..., _UElements...>
|
||||
operator+(tuple<_TElements...>&& __t, tuple<_UElements...>&& __u)
|
||||
{ return tuple_cat(std::forward<decltype(__t)>(__t),
|
||||
std::forward<decltype(__u)>(__u)); }
|
||||
|
||||
template<typename... _Elements>
|
||||
inline tuple<_Elements&...>
|
||||
tie(_Elements&... __args)
|
||||
{ return tuple<_Elements&...>(__args...); }
|
||||
|
||||
// A class (and instance) which can be used in 'tie' when an element
|
||||
// of a tuple is not required
|
||||
struct _Swallow_assign
|
||||
{
|
||||
template<class _Tp>
|
||||
_Swallow_assign&
|
||||
operator=(const _Tp&)
|
||||
{ return *this; }
|
||||
};
|
||||
|
||||
// TODO: Put this in some kind of shared file.
|
||||
namespace
|
||||
{
|
||||
_Swallow_assign ignore;
|
||||
}; // anonymous namespace
|
||||
}
|
||||
|
||||
#endif // _GLIBCXX_CXX0X_TUPLE
|
||||
|
|
|
|||
|
|
@ -39,24 +39,399 @@
|
|||
|
||||
#pragma GCC system_header
|
||||
|
||||
#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
|
||||
# error TR1 header cannot be included from C++0x header
|
||||
#endif
|
||||
|
||||
#include <utility>
|
||||
|
||||
#if defined(_GLIBCXX_INCLUDE_AS_TR1)
|
||||
# include <tr1_impl/tuple>
|
||||
#else
|
||||
# define _GLIBCXX_INCLUDE_AS_TR1
|
||||
# define _GLIBCXX_BEGIN_NAMESPACE_TR1 namespace tr1 {
|
||||
# define _GLIBCXX_END_NAMESPACE_TR1 }
|
||||
# define _GLIBCXX_TR1 tr1::
|
||||
# include <tr1_impl/tuple>
|
||||
# undef _GLIBCXX_TR1
|
||||
# undef _GLIBCXX_END_NAMESPACE_TR1
|
||||
# undef _GLIBCXX_BEGIN_NAMESPACE_TR1
|
||||
# undef _GLIBCXX_INCLUDE_AS_TR1
|
||||
#endif
|
||||
namespace std
|
||||
{
|
||||
namespace tr1
|
||||
{
|
||||
// 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; };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Contains the actual implementation of the @c tuple template, stored
|
||||
* as a recursive inheritance hierarchy from the first element (most
|
||||
* derived class) to the last (least derived class). The @c Idx
|
||||
* parameter gives the 0-based index of the element stored at this
|
||||
* point in the hierarchy; we use it to implement a constant-time
|
||||
* get() operation.
|
||||
* @endif
|
||||
*/
|
||||
template<int _Idx, typename... _Elements>
|
||||
struct _Tuple_impl;
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Zero-element tuple implementation. This is the basis case for the
|
||||
* inheritance recursion.
|
||||
* @endif maint
|
||||
*/
|
||||
template<int _Idx>
|
||||
struct _Tuple_impl<_Idx> { };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* 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).
|
||||
* @endif
|
||||
*/
|
||||
template<int _Idx, typename _Head, typename... _Tail>
|
||||
struct _Tuple_impl<_Idx, _Head, _Tail...>
|
||||
: public _Tuple_impl<_Idx + 1, _Tail...>
|
||||
{
|
||||
typedef _Tuple_impl<_Idx + 1, _Tail...> _Inherited;
|
||||
|
||||
_Head _M_head;
|
||||
|
||||
_Inherited& _M_tail() { return *this; }
|
||||
const _Inherited& _M_tail() const { return *this; }
|
||||
|
||||
_Tuple_impl() : _Inherited(), _M_head() { }
|
||||
|
||||
explicit
|
||||
_Tuple_impl(typename __add_c_ref<_Head>::type __head,
|
||||
typename __add_c_ref<_Tail>::type... __tail)
|
||||
: _Inherited(__tail...), _M_head(__head) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
_Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
|
||||
: _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
|
||||
|
||||
_Tuple_impl(const _Tuple_impl& __in)
|
||||
: _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
_Tuple_impl&
|
||||
operator=(const _Tuple_impl<_Idx, _UElements...>& __in)
|
||||
{
|
||||
_M_head = __in._M_head;
|
||||
_M_tail() = __in._M_tail();
|
||||
return *this;
|
||||
}
|
||||
|
||||
_Tuple_impl&
|
||||
operator=(const _Tuple_impl& __in)
|
||||
{
|
||||
_M_head = __in._M_head;
|
||||
_M_tail() = __in._M_tail();
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
template<typename... _Elements>
|
||||
class tuple : public _Tuple_impl<0, _Elements...>
|
||||
{
|
||||
typedef _Tuple_impl<0, _Elements...> _Inherited;
|
||||
|
||||
public:
|
||||
tuple() : _Inherited() { }
|
||||
|
||||
explicit
|
||||
tuple(typename __add_c_ref<_Elements>::type... __elements)
|
||||
: _Inherited(__elements...) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
tuple(const tuple<_UElements...>& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
tuple(const tuple& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
tuple&
|
||||
operator=(const tuple<_UElements...>& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
tuple&
|
||||
operator=(const tuple& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
template<> class tuple<> { };
|
||||
|
||||
// 2-element tuple, with construction and assignment from a pair.
|
||||
template<typename _T1, typename _T2>
|
||||
class tuple<_T1, _T2> : public _Tuple_impl<0, _T1, _T2>
|
||||
{
|
||||
typedef _Tuple_impl<0, _T1, _T2> _Inherited;
|
||||
|
||||
public:
|
||||
tuple() : _Inherited() { }
|
||||
|
||||
explicit
|
||||
tuple(typename __add_c_ref<_T1>::type __a1,
|
||||
typename __add_c_ref<_T2>::type __a2)
|
||||
: _Inherited(__a1, __a2) { }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple(const tuple<_U1, _U2>& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
tuple(const tuple& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple(const pair<_U1, _U2>& __in)
|
||||
: _Inherited(_Tuple_impl<0,
|
||||
typename __add_c_ref<_U1>::type,
|
||||
typename __add_c_ref<_U2>::type>(__in.first,
|
||||
__in.second))
|
||||
{ }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple&
|
||||
operator=(const tuple<_U1, _U2>& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
tuple&
|
||||
operator=(const tuple& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple&
|
||||
operator=(const pair<_U1, _U2>& __in)
|
||||
{
|
||||
this->_M_head = __in.first;
|
||||
this->_M_tail()._M_head = __in.second;
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/// Gives the type of the ith element of a given tuple type.
|
||||
template<int __i, typename _Tp>
|
||||
struct tuple_element;
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Recursive case for tuple_element: strip off the first element in
|
||||
* the tuple and retrieve the (i-1)th element of the remaining tuple.
|
||||
* @endif
|
||||
*/
|
||||
template<int __i, typename _Head, typename... _Tail>
|
||||
struct tuple_element<__i, tuple<_Head, _Tail...> >
|
||||
: tuple_element<__i - 1, tuple<_Tail...> > { };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Basis case for tuple_element: The first element is the one we're seeking.
|
||||
* @endif
|
||||
*/
|
||||
template<typename _Head, typename... _Tail>
|
||||
struct tuple_element<0, tuple<_Head, _Tail...> >
|
||||
{
|
||||
typedef _Head type;
|
||||
};
|
||||
|
||||
/// Finds the size of a given tuple type.
|
||||
template<typename _Tp>
|
||||
struct tuple_size;
|
||||
|
||||
/// @brief class tuple_size
|
||||
template<typename... _Elements>
|
||||
struct tuple_size<tuple<_Elements...> >
|
||||
{
|
||||
static const int value = sizeof...(_Elements);
|
||||
};
|
||||
|
||||
template<typename... _Elements>
|
||||
const int tuple_size<tuple<_Elements...> >::value;
|
||||
|
||||
template<int __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>
|
||||
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>
|
||||
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>
|
||||
inline typename __add_c_ref<
|
||||
typename tuple_element<__i, tuple<_Elements...> >::type
|
||||
>::type
|
||||
get(const tuple<_Elements...>& __t)
|
||||
{
|
||||
return __get_helper<__i>(__t);
|
||||
}
|
||||
|
||||
// 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;
|
||||
|
||||
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; }
|
||||
};
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator==(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{
|
||||
typedef tuple<_TElements...> _Tp;
|
||||
typedef tuple<_UElements...> _Up;
|
||||
return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
|
||||
0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator<(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{
|
||||
typedef tuple<_TElements...> _Tp;
|
||||
typedef tuple<_UElements...> _Up;
|
||||
return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
|
||||
0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline bool
|
||||
operator!=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__t == __u); }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline bool
|
||||
operator>(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return __u < __t; }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline bool
|
||||
operator<=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__u < __t); }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
inline bool
|
||||
operator>=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__t < __u); }
|
||||
|
||||
template<typename _Tp>
|
||||
class reference_wrapper;
|
||||
|
||||
// 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;
|
||||
};
|
||||
|
||||
template<typename... _Elements>
|
||||
inline tuple<typename __strip_reference_wrapper<_Elements>::__type...>
|
||||
make_tuple(_Elements... __args)
|
||||
{
|
||||
typedef tuple<typename __strip_reference_wrapper<_Elements>::__type...>
|
||||
__result_type;
|
||||
return __result_type(__args...);
|
||||
}
|
||||
|
||||
template<typename... _Elements>
|
||||
inline tuple<_Elements&...>
|
||||
tie(_Elements&... __args)
|
||||
{
|
||||
return tuple<_Elements&...>(__args...);
|
||||
}
|
||||
|
||||
// A class (and instance) which can be used in 'tie' when an element
|
||||
// of a tuple is not required
|
||||
struct _Swallow_assign
|
||||
{
|
||||
template<class _Tp>
|
||||
_Swallow_assign&
|
||||
operator=(const _Tp&)
|
||||
{ return *this; }
|
||||
};
|
||||
|
||||
// TODO: Put this in some kind of shared file.
|
||||
namespace
|
||||
{
|
||||
_Swallow_assign ignore;
|
||||
}; // anonymous namespace
|
||||
}
|
||||
}
|
||||
|
||||
#endif // _GLIBCXX_TR1_TUPLE
|
||||
|
|
|
|||
|
|
@ -1,432 +0,0 @@
|
|||
// class template tuple -*- C++ -*-
|
||||
|
||||
// Copyright (C) 2007 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_impl/tuple
|
||||
* This is an internal header file, included by other library headers.
|
||||
* You should not attempt to use it directly.
|
||||
*/
|
||||
|
||||
// Chris Jefferson <chris@bubblescope.net>
|
||||
// Variadic Templates support by Douglas Gregor <doug.gregor@gmail.com>
|
||||
|
||||
namespace std
|
||||
{
|
||||
_GLIBCXX_BEGIN_NAMESPACE_TR1
|
||||
|
||||
// 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; };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Contains the actual implementation of the @c tuple template, stored
|
||||
* as a recursive inheritance hierarchy from the first element (most
|
||||
* derived class) to the last (least derived class). The @c Idx
|
||||
* parameter gives the 0-based index of the element stored at this
|
||||
* point in the hierarchy; we use it to implement a constant-time
|
||||
* get() operation.
|
||||
* @endif
|
||||
*/
|
||||
template<int _Idx, typename... _Elements>
|
||||
struct _Tuple_impl;
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Zero-element tuple implementation. This is the basis case for the
|
||||
* inheritance recursion.
|
||||
* @endif maint
|
||||
*/
|
||||
template<int _Idx>
|
||||
struct _Tuple_impl<_Idx> { };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* 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).
|
||||
* @endif
|
||||
*/
|
||||
template<int _Idx, typename _Head, typename... _Tail>
|
||||
struct _Tuple_impl<_Idx, _Head, _Tail...>
|
||||
: public _Tuple_impl<_Idx + 1, _Tail...>
|
||||
{
|
||||
typedef _Tuple_impl<_Idx + 1, _Tail...> _Inherited;
|
||||
|
||||
_Head _M_head;
|
||||
|
||||
_Inherited& _M_tail() { return *this; }
|
||||
const _Inherited& _M_tail() const { return *this; }
|
||||
|
||||
_Tuple_impl() : _Inherited(), _M_head() { }
|
||||
|
||||
explicit
|
||||
_Tuple_impl(typename __add_c_ref<_Head>::type __head,
|
||||
typename __add_c_ref<_Tail>::type... __tail)
|
||||
: _Inherited(__tail...), _M_head(__head) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
_Tuple_impl(const _Tuple_impl<_Idx, _UElements...>& __in)
|
||||
: _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
|
||||
|
||||
_Tuple_impl(const _Tuple_impl& __in)
|
||||
: _Inherited(__in._M_tail()), _M_head(__in._M_head) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
_Tuple_impl&
|
||||
operator=(const _Tuple_impl<_Idx, _UElements...>& __in)
|
||||
{
|
||||
_M_head = __in._M_head;
|
||||
_M_tail() = __in._M_tail();
|
||||
return *this;
|
||||
}
|
||||
|
||||
_Tuple_impl&
|
||||
operator=(const _Tuple_impl& __in)
|
||||
{
|
||||
_M_head = __in._M_head;
|
||||
_M_tail() = __in._M_tail();
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
template<typename... _Elements>
|
||||
class tuple : public _Tuple_impl<0, _Elements...>
|
||||
{
|
||||
typedef _Tuple_impl<0, _Elements...> _Inherited;
|
||||
|
||||
public:
|
||||
tuple() : _Inherited() { }
|
||||
|
||||
explicit
|
||||
tuple(typename __add_c_ref<_Elements>::type... __elements)
|
||||
: _Inherited(__elements...) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
tuple(const tuple<_UElements...>& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
tuple(const tuple& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
template<typename... _UElements>
|
||||
tuple&
|
||||
operator=(const tuple<_UElements...>& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
tuple&
|
||||
operator=(const tuple& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
template<> class tuple<> { };
|
||||
|
||||
// 2-element tuple, with construction and assignment from a pair.
|
||||
template<typename _T1, typename _T2>
|
||||
class tuple<_T1, _T2> : public _Tuple_impl<0, _T1, _T2>
|
||||
{
|
||||
typedef _Tuple_impl<0, _T1, _T2> _Inherited;
|
||||
|
||||
public:
|
||||
tuple() : _Inherited() { }
|
||||
|
||||
explicit
|
||||
tuple(typename __add_c_ref<_T1>::type __a1,
|
||||
typename __add_c_ref<_T2>::type __a2)
|
||||
: _Inherited(__a1, __a2) { }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple(const tuple<_U1, _U2>& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
tuple(const tuple& __in)
|
||||
: _Inherited(__in) { }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple(const pair<_U1, _U2>& __in)
|
||||
: _Inherited(_Tuple_impl<0,
|
||||
typename __add_c_ref<_U1>::type,
|
||||
typename __add_c_ref<_U2>::type>(__in.first,
|
||||
__in.second))
|
||||
{ }
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple&
|
||||
operator=(const tuple<_U1, _U2>& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
tuple&
|
||||
operator=(const tuple& __in)
|
||||
{
|
||||
static_cast<_Inherited&>(*this) = __in;
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _U1, typename _U2>
|
||||
tuple&
|
||||
operator=(const pair<_U1, _U2>& __in)
|
||||
{
|
||||
this->_M_head = __in.first;
|
||||
this->_M_tail()._M_head = __in.second;
|
||||
return *this;
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/// Gives the type of the ith element of a given tuple type.
|
||||
template<int __i, typename _Tp>
|
||||
struct tuple_element;
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Recursive case for tuple_element: strip off the first element in
|
||||
* the tuple and retrieve the (i-1)th element of the remaining tuple.
|
||||
* @endif
|
||||
*/
|
||||
template<int __i, typename _Head, typename... _Tail>
|
||||
struct tuple_element<__i, tuple<_Head, _Tail...> >
|
||||
: tuple_element<__i - 1, tuple<_Tail...> > { };
|
||||
|
||||
/**
|
||||
* @if maint
|
||||
* Basis case for tuple_element: The first element is the one we're seeking.
|
||||
* @endif
|
||||
*/
|
||||
template<typename _Head, typename... _Tail>
|
||||
struct tuple_element<0, tuple<_Head, _Tail...> >
|
||||
{
|
||||
typedef _Head type;
|
||||
};
|
||||
|
||||
/// Finds the size of a given tuple type.
|
||||
template<typename _Tp>
|
||||
struct tuple_size;
|
||||
|
||||
/// @brief class tuple_size
|
||||
template<typename... _Elements>
|
||||
struct tuple_size<tuple<_Elements...> >
|
||||
{
|
||||
static const int value = sizeof...(_Elements);
|
||||
};
|
||||
|
||||
template<typename... _Elements>
|
||||
const int tuple_size<tuple<_Elements...> >::value;
|
||||
|
||||
template<int __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>
|
||||
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>
|
||||
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>
|
||||
inline typename __add_c_ref<
|
||||
typename tuple_element<__i, tuple<_Elements...> >::type
|
||||
>::type
|
||||
get(const tuple<_Elements...>& __t)
|
||||
{
|
||||
return __get_helper<__i>(__t);
|
||||
}
|
||||
|
||||
// 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;
|
||||
|
||||
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; }
|
||||
};
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator==(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{
|
||||
typedef tuple<_TElements...> _Tp;
|
||||
typedef tuple<_UElements...> _Up;
|
||||
return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
|
||||
0, tuple_size<_Tp>::value, _Tp, _Up>::__eq(__t, __u));
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator<(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{
|
||||
typedef tuple<_TElements...> _Tp;
|
||||
typedef tuple<_UElements...> _Up;
|
||||
return (__tuple_compare<tuple_size<_Tp>::value - tuple_size<_Tp>::value,
|
||||
0, tuple_size<_Tp>::value, _Tp, _Up>::__less(__t, __u));
|
||||
}
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator!=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__t == __u); }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator>(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return __u < __t; }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator<=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__u < __t); }
|
||||
|
||||
template<typename... _TElements, typename... _UElements>
|
||||
bool
|
||||
operator>=(const tuple<_TElements...>& __t,
|
||||
const tuple<_UElements...>& __u)
|
||||
{ return !(__t < __u); }
|
||||
|
||||
#ifdef _GLIBCXX_INCLUDE_AS_TR1
|
||||
template<typename _Tp>
|
||||
class reference_wrapper;
|
||||
|
||||
// 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;
|
||||
};
|
||||
#endif
|
||||
|
||||
template<typename... _Elements>
|
||||
inline tuple<typename __strip_reference_wrapper<_Elements>::__type...>
|
||||
make_tuple(_Elements... __args)
|
||||
{
|
||||
typedef tuple<typename __strip_reference_wrapper<_Elements>::__type...>
|
||||
__result_type;
|
||||
return __result_type(__args...);
|
||||
}
|
||||
|
||||
template<typename... _Elements>
|
||||
inline tuple<_Elements&...>
|
||||
tie(_Elements&... __args)
|
||||
{
|
||||
return tuple<_Elements&...>(__args...);
|
||||
}
|
||||
|
||||
// A class (and instance) which can be used in 'tie' when an element
|
||||
// of a tuple is not required
|
||||
struct _Swallow_assign
|
||||
{
|
||||
template<class _Tp>
|
||||
_Swallow_assign&
|
||||
operator=(const _Tp&)
|
||||
{ return *this; }
|
||||
};
|
||||
|
||||
// TODO: Put this in some kind of shared file.
|
||||
namespace
|
||||
{
|
||||
_Swallow_assign ignore;
|
||||
}; // anonymous namespace
|
||||
|
||||
_GLIBCXX_END_NAMESPACE_TR1
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue